From 2d9408b518952bb6d3d31574c0be38c362bf7489 Mon Sep 17 00:00:00 2001 From: Michael Gebetsroither Date: Fri, 16 Mar 2007 11:22:27 +0100 Subject: [PATCH 1/1] removed udhcpc --- Makefile | 8 +- debian/changelog | 3 +- debian/copyright | 1 - debian/overrides | 1 - udhcp/AUTHORS | 13 -- udhcp/COPYING | 339 ------------------------------ udhcp/ChangeLog | 260 ----------------------- udhcp/Makefile | 103 ---------- udhcp/README | 53 ----- udhcp/README.dumpleases | 17 -- udhcp/README.udhcpc | 142 ------------- udhcp/README.udhcpd | 59 ------ udhcp/TODO | 16 -- udhcp/arpping.c | 108 ---------- udhcp/arpping.h | 35 ---- udhcp/clientpacket.c | 249 ---------------------- udhcp/clientpacket.h | 14 -- udhcp/clientsocket.c | 62 ------ udhcp/clientsocket.h | 7 - udhcp/common.c | 162 --------------- udhcp/common.h | 56 ----- udhcp/dhcpc.c | 537 ------------------------------------------------ udhcp/dhcpc.h | 38 ---- udhcp/dhcpd.c | 275 ------------------------- udhcp/dhcpd.h | 141 ------------- udhcp/dumpleases.1 | 30 --- udhcp/dumpleases.c | 110 ---------- udhcp/files.c | 346 ------------------------------- udhcp/files.h | 17 -- udhcp/frontend.c | 16 -- udhcp/leases.c | 158 -------------- udhcp/leases.h | 23 --- udhcp/libbb_udhcp.h | 54 ----- udhcp/options.c | 234 --------------------- udhcp/options.h | 40 ---- udhcp/packet.c | 211 ------------------- udhcp/packet.h | 41 ---- udhcp/pidfile.c | 75 ------- udhcp/pidfile.h | 25 --- udhcp/script.c | 233 --------------------- udhcp/script.h | 6 - udhcp/serverpacket.c | 275 ------------------------- udhcp/serverpacket.h | 12 -- udhcp/signalpipe.c | 78 ------- udhcp/signalpipe.h | 22 -- udhcp/socket.c | 137 ------------ udhcp/socket.h | 8 - udhcp/static_leases.c | 119 ----------- udhcp/static_leases.h | 25 --- udhcp/udhcpc.8 | 208 ------------------- udhcp/udhcpd.8 | 17 -- udhcp/udhcpd.conf.5 | 166 --------------- udhcp/version.h | 6 - 53 files changed, 4 insertions(+), 5387 deletions(-) delete mode 100644 udhcp/AUTHORS delete mode 100644 udhcp/COPYING delete mode 100644 udhcp/ChangeLog delete mode 100644 udhcp/Makefile delete mode 100644 udhcp/README delete mode 100644 udhcp/README.dumpleases delete mode 100644 udhcp/README.udhcpc delete mode 100644 udhcp/README.udhcpd delete mode 100644 udhcp/TODO delete mode 100644 udhcp/arpping.c delete mode 100644 udhcp/arpping.h delete mode 100644 udhcp/clientpacket.c delete mode 100644 udhcp/clientpacket.h delete mode 100644 udhcp/clientsocket.c delete mode 100644 udhcp/clientsocket.h delete mode 100644 udhcp/common.c delete mode 100644 udhcp/common.h delete mode 100644 udhcp/dhcpc.c delete mode 100644 udhcp/dhcpc.h delete mode 100644 udhcp/dhcpd.c delete mode 100644 udhcp/dhcpd.h delete mode 100644 udhcp/dumpleases.1 delete mode 100644 udhcp/dumpleases.c delete mode 100644 udhcp/files.c delete mode 100644 udhcp/files.h delete mode 100644 udhcp/frontend.c delete mode 100644 udhcp/leases.c delete mode 100644 udhcp/leases.h delete mode 100644 udhcp/libbb_udhcp.h delete mode 100644 udhcp/options.c delete mode 100644 udhcp/options.h delete mode 100644 udhcp/packet.c delete mode 100644 udhcp/packet.h delete mode 100644 udhcp/pidfile.c delete mode 100644 udhcp/pidfile.h delete mode 100644 udhcp/script.c delete mode 100644 udhcp/script.h delete mode 100644 udhcp/serverpacket.c delete mode 100644 udhcp/serverpacket.h delete mode 100644 udhcp/signalpipe.c delete mode 100644 udhcp/signalpipe.h delete mode 100644 udhcp/socket.c delete mode 100644 udhcp/socket.h delete mode 100644 udhcp/static_leases.c delete mode 100644 udhcp/static_leases.h delete mode 100644 udhcp/udhcpc.8 delete mode 100644 udhcp/udhcpd.8 delete mode 100644 udhcp/udhcpd.conf.5 delete mode 100644 udhcp/version.h diff --git a/Makefile b/Makefile index 345c6df..cf63cc8 100644 --- a/Makefile +++ b/Makefile @@ -12,15 +12,12 @@ usrbin = $(usr)/bin usrsbin = $(usr)/sbin usrshare = $(usr)/share/$(name) -bin: timeout udhcpc +bin: timeout timeout: timeout.c diet gcc $(CFLAGS) $^ -o $@ strip --strip-unneeded $@ -udhcpc: udhcp - cd udhcp ; LDFLAGS='-static' make - install: bin $(install_) -d -m 755 $(etc) $(install_) -m 644 config $(etc) @@ -35,7 +32,6 @@ install: bin $(install_) -m 755 rdir $(usrshare) $(install_) -m 755 cdir $(usrshare) $(install_) -m 755 timeout $(usrshare) - $(install_) -m 755 udhcp/udhcpc $(usrshare) cp -r templates $(usrshare) $(install_) -m 755 -d $(usrsbin) @@ -43,4 +39,4 @@ install: bin $(install_) -m 755 grml-terminalserver-config $(usrsbin) clean: - rm -f timeout ; cd udhcp && make clean && cd .. + rm -f timeout diff --git a/debian/changelog b/debian/changelog index 90f0cc4..4e8b693 100644 --- a/debian/changelog +++ b/debian/changelog @@ -14,8 +14,9 @@ grml-terminalserver (0.83) unstable; urgency=low * fix error to not only use a running kernel * updated todo * fix module loading in linuxrc + * removed udhcpc - -- Michael Gebetsroither Fri, 16 Mar 2007 11:09:35 +0100 + -- Michael Gebetsroither Fri, 16 Mar 2007 11:22:00 +0100 grml-terminalserver (0.82) unstable; urgency=low diff --git a/debian/copyright b/debian/copyright index 66b9fed..f3e5fdb 100644 --- a/debian/copyright +++ b/debian/copyright @@ -4,7 +4,6 @@ on Sun, 20 Mar 2005 19:39:26 +0100. Sources available at http://grml.org/repos/ and http://hg.grml.org/ The timeout binary has been extracted from package tct (Forensics related utilities) version 1.11-6.3. -The udhcpc binary has been built from package udhcp-0.9.8cvs20050303. Copyright (C) 2003++ Michael Gebetsroither and Michael Prokop diff --git a/debian/overrides b/debian/overrides index f15c205..bd6bc73 100644 --- a/debian/overrides +++ b/debian/overrides @@ -3,5 +3,4 @@ grml-terminalserver: wrong-path-for-interpreter #!/static/sh != /bin/sh (./usr/s grml-terminalserver: wrong-path-for-interpreter #!/static/ash != /bin/ash (./usr/share/grml-terminalserver/rdir) grml-terminalserver: wrong-path-for-interpreter #!/static/ash != /bin/ash (./usr/share/grml-terminalserver/cdir) grml-terminalserver: wrong-path-for-interpreter #!/static/ash != /bin/ash (./usr/share/grml-terminalserver/discover-nic) -grml-terminalserver: statically-linked-binary ./usr/share/grml-terminalserver/udhcpc grml-terminalserver: statically-linked-binary ./usr/share/grml-terminalserver/timeout diff --git a/udhcp/AUTHORS b/udhcp/AUTHORS deleted file mode 100644 index f3f4336..0000000 --- a/udhcp/AUTHORS +++ /dev/null @@ -1,13 +0,0 @@ -udhcp server/client package ------------------------ - -Russ Dill -Matthew Ramsay -Chris Trew - -Other Credits: --------------- -Moreton Bay (http://www.moretonbay.com/) -Vladimir Oleynik Size optimizations - - diff --git a/udhcp/COPYING b/udhcp/COPYING deleted file mode 100644 index a43ea21..0000000 --- a/udhcp/COPYING +++ /dev/null @@ -1,339 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 - - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 675 Mass Ave, Cambridge, MA 02139, USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. 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If this is what you want to do, use the GNU Library General -Public License instead of this License. diff --git a/udhcp/ChangeLog b/udhcp/ChangeLog deleted file mode 100644 index bf2982f..0000000 --- a/udhcp/ChangeLog +++ /dev/null @@ -1,260 +0,0 @@ -0.9.9 (pending) -+ Various other size optimizations (Vladimir) -+ Change strerror(errno) to %m (Vladimir N. Oleynik ) -+ Fixed a little endian problem in mton (Bastian Blank ) -+ Fixed a arpping alignment problem (Rui He ) -+ Added sanity check for max_leases (udhcp bug #1285) (me) -+ Finally got rid of the trailing space in enviromental vars (me) -+ added an new enviromental variable: $mask. It contains the number - of subnet bits for tools like ip route that require it. - (Bastian Blank , me) - -0.9.8 (021031) -+ split up README files (me) -+ use /dev/urandom to seed xid's (instead of time(0)) (me) -+ fixed renew behavior (me) -+ udhcp now fits nicely into busybox - (Glenn McGrath as well as myself) -+ updated client manpage (me) -+ both client and server now use sockets for signal handling, - hopefully, this will be the last needed change in signal - handling, I'm fairly certain all the possible races are now - closed. (me) -+ The server now restarts the auto_time timer when it receives - a SIGUSR1 (write out config file). (me) -+ Improve signal handling (David Poole) -+ Fix to config file parsing (Matt Kraai) -+ Fix load lease logic (me) -+ Fix clear_lease logic (me) -+ -h is now an alias for -H (udhcp bug #1253) -+ Shorter timeout on not receiving offers (me) -+ Improved signal behavior by client (me) -+ Would never assign end address (Keith Smith ) -+ Was improperly reporting yiaddr as siaddr (ben-udhcp@bdlow.net) - udhcp bug#1256 -+ Fixed reading of client id (David Poole ) -+ change sys_errlist[] to strerror() as it aparently doesn't exist - (Erik Andersen ) -+ fixed get_raw_packet so it returns -2 on non fatal errors - (Ted Lemon ) -+ Improved (hopefully) NAKing behavior (me) -+ Added -b option (Jouni Malinen) -+ Compute checksums correctly on big endian hosts - (Jouni Malinen ) - -0.9.7 (020526) -+ Use add_lease in read_leases, sanitizes leases more, and clears out exprired - ones if there is no more room (me) -+ Moved udhcpd.leases to /var/lib/misc/udhcpd.leases (Debian bug #147747) -+ Change (obsolete) AF_INET in arping.c to PF_PACKET (Debian bug #127049) -+ Added script hook for DHCPNAK (nak), as well as providing the message option - (me) -+ Generate the paramaters request list by seeing what options in options.c are - ored with OPTION_REQ in options.c -+ Fix dhcp renew forgetfullness on client (bug #1230) -+ Fix dhcp release bug on client (bug #1231) -+ Set option request list for DHCP renew (bug #1233) -+ Set BOOTREQUEST/REPLY properly -+ Change client-identifier field to popularly expected behavior (me) -+ Only reopen port on errors (me) -+ Change fork/close/setsid structures to daemon() (me) -+ Allow user to specify udhcpd config file at run time (Steven, me) -+ Write pidfile after changing it (Steven CTR Carr ) -+ Added env var docs to udhcpc man page (Matt) -+ Standardized lowercase udhcp in documentation (me) -+ Accept packets without a UDP checksum (me) -+ Accept packets with extra garbage (me) -+ Better error handling in files.c (me) -+ Combined read_interface function to reduce COMBINED_BINARY size (me) -+ Drop calc_length(), some servers choke on smaller packets (me) -+ Try to clean some fat out (me) - -0.9.6 (011001) -+ Added bootp paramaters to server (me) -+ Added bootp paramaters to client (me) -+ Added vendor id to client (me) -+ Better pidfile handling in client and server (me) -+ Added man pages (Matt Kraai ) - -0.9.5 (010914) -+ Fixed $HOME and $PATH env passing (me) -+ Fixed client to only listen for raw packets on correct interface (me) -+ added --quit,-q option to quit after a lease is obtained (me) -+ Fixed 100% CPU utilization by client when interface is down (me) - -0.9.4 (010827) -+ Force broadcast to broken clients that request unicast (ie, MSFT 98) -+ Make install rules (Adam J. Richter ) -+ One scripts, instead of many (Adam) -+ Removed script paramater info files (env vars only) (Adam) -+ Controlling of forking behavior in client (Adam) -+ General script.c/dhcpc.c cleanups (Adam) - -0.9.3 (010820) -+ Increased debugging verbosity (me) -+ Cut trailing whitespace when reading config file (me) -+ added hostname option to client (me) -+ fixed a strncpy bug in script.c (me) -+ fixed a leaky socket in dhcpc.c (me) -+ fixed a leaky socket in dhcpd.c (me) - -0.9.2 (010810) -+ Added raw sockets to client (me) -+ alignment fixes (Mark Huang) -+ compiler warning fixes (Mark Huang) -+ client now sends parameter list (Mark Huang/me) -+ added ipttl option -+ Does now not request broadcast packets - -0.9.1 (010806) -+ Added udhcpc client -+ reorganized functions/files -+ listening socket now only binds to one interface - -0.9.0 (010720) Major rewrite, current changes, goals: -+ should not segfault on bogus packets. -+ Options can be read from sname and file fields. -+ supports all DHCP messages (release, decline, inform). -+ IP block is now specified by a range of IP's. -+ Leases file now contains lease time (relative, or absolute). -+ Just about any DHCP option is now supported. -+ DNS entries are no longer read from resolv.conf -+ Lease file can be written periodically when the process receives a SIGUSR1 -+ arpping should be supported on all arches. -+ support for DHCP relays. -+ DHCP messages can be unicast if the client requests it. -+ many, many, many other things. - -0.8.29 (000323) -+ stable(?) release - - -0.8.28 (000323) -+ removed alarm as it was causing server to go down -+ removed debugging -+ break down dhcpd.c into manageable files - - -0.8.27 (000221) -+ OFFER also sends gateway/subnet (for picky dhcp clients) -+ multiple DNS now handled from resolv.conf if available -+ multiple WINS (from dhcpd.conf) - -0.8.25 (000120) -+ now compiles *and* runs on a generic linux system - tested with a windows 98 client and the sample config - files in the samples directory. - -0.8.24 (000117) -+ makeiplist tool has basic functionality in place -+ new sample config files -+ route add -host 255.255.255.255 dev eth0 added for generic linux - -0.8.23 (000117) -+ NETtel specific fix for ignoring dhcp requests on 2nd interface - -0.8.22 (000113) -+ minor changes to compile under a generic linux system -+ minor config file location changes for a generic linux system -+ makeiplist fixes.. still incomplete.. but etting closer - -0.8.21 (000113) -+ now sends the correct server ip instead of hardcoded value -+ minor debugging fixes for critical messages - -0.8.20 (000106) -+ cut out dhcp server checking.. this was causing dialout ppp - sessions with idle time set to never time out. -+ also removed the 10 second pause before launching.. as this - was originally to stop it replying to a dhcp client - on a NETtel which was really a bad way to do it in the - first place :-) - -0.8.19 (000104) -+ fixes for route add -host on a machine that needs to run both - a DHCP client and server (dual eth box) - -0.8.18 (991220) - -+ Race conditions fixed by disabling alarm whilst the server is busy -+ Fixed continous clearing of the offered array so that it is only cleared - when it is dirty - (could change the position of when dirty is set) - -0.8.17 (991212) - -- has problems clearing out the offered array - -0.8.16 (991203) -+ Non blocking error is changes to informational as it is not really - an error - -0.8.15 (991129) -+ Servs the dns field 3 times (Nettel only) so that windows servers - dont time out whilst nettel is booting - -0.8.14 (991126) -+ added owner check for the offered array so clean out time may be - increased -+ added new func to print out chadder/MAC - -0.8.13 (991125) -+ added win95 support (w95 changed xid halfway through conversation) -+ had to change the offered array to use hardware addresses instead of xid -+ fixed re offered bug -+ added more debugging - -0.8.12 (991111) -+ debugging was real bad.. cleaned up a bit.. needs overhaul - - -0.8.11 (991110) -+ fixed up offeredAddr array to actually be used now!! offeredAddr is - used to see if another simultaneous connecting client was offered - an address that we are about to offer another client (multiple - client bug) -+ removed re_offered variable as it breaks multiple client support -+ added lease time to ACK -- doesn't work if in OFFER -+ decreased internal array clear delay to 60 seconds -+ minor findAddr bug (returning -1 instead of 0) -+ if clients xid already in offeredAddr offer the same addr and don't add a - new addr to offered (caused by a client issuing multiple DISCOVERs) - -0.8.10 (991105) -+ \n bug in arpping -+ minor debugging changes (removed printfs etc) -+ started browseiplist (not finished) - -0.8.9 (19991105) -+ fixed options array size bug (options were cut off) - -0.8.8 (19991105) -+ ignores requests from dhcpcd on the same machine - -0.8.7 (19991104) -+ don't die if we can't bind to search for existing DHCP server -+ slightly more verbose syslogging - -0.8.6 (19991103) -+ added makeiplist (not finished -- core dumps) -+ minor debug changes - -0.8.5 (19991029) -+ exits if another DHCP server is already on the network -+ added Linux Makefile - -0.8.4 (19991026) -+ minor bug fix in findaddr preventing an addr being found - -0.8.3 (19991025) -+ fixed up debugging -+ minor hwaddr issues - -0.8.2 (19991022) -+ free leases (new arpping code from dhcpcd) -+ fixed bug where crashes if no leases/iplist file -+ syslogging and debugging switch -+ serve DNS from resolv.conf -+ fixed bug where new lease added if same mac offered -+ now checks the ip is free b4 offering -+ now supports wins server - diff --git a/udhcp/Makefile b/udhcp/Makefile deleted file mode 100644 index 52d0ec9..0000000 --- a/udhcp/Makefile +++ /dev/null @@ -1,103 +0,0 @@ -# udhcp makefile - -DESTDIR = -prefix = /usr -SBINDIR = /sbin -USRSBINDIR = $(DESTDIR)${prefix}/sbin -USRBINDIR = $(DESTDIR)${prefix}/bin -USRSHAREDIR = $(DESTDIR)${prefix}/share - -# Uncomment this to get a shared binary. Call as udhcpd for the server, -# and udhcpc for the client -#COMBINED_BINARY=1 - -# Uncomment this for extra output and to compile with debugging symbols -#UDHCP_DEBUG=1 - -# Uncomment this to output messages to syslog, otherwise, messages go to stdout -CFLAGS += -DUDHCP_SYSLOG - -#CROSS_COMPILE=arm-uclibc- -CC = $(CROSS_COMPILE)gcc -LD = $(CROSS_COMPILE)gcc -INSTALL = install - -OBJS_SHARED = common.o options.o packet.o pidfile.o signalpipe.o socket.o -DHCPD_OBJS = dhcpd.o arpping.o files.o leases.o serverpacket.o static_leases.o -DHCPC_OBJS = dhcpc.o clientpacket.o clientsocket.o script.o - -ifdef COMBINED_BINARY -EXEC1 = udhcpd -OBJS1 = $(DHCPD_OBJS) $(DHCPC_OBJS) $(OBJS_SHARED) frontend.o -CFLAGS += -DCOMBINED_BINARY -else -EXEC1 = udhcpd -OBJS1 = $(DHCPD_OBJS) $(OBJS_SHARED) - -EXEC2 = udhcpc -OBJS2 = $(DHCPC_OBJS) $(OBJS_SHARED) -endif - -EXEC3 = dumpleases -OBJS3 = dumpleases.o - -BOOT_PROGRAM = udhcpc -DAEMON = udhcpd -COMMAND = dumpleases - -ifdef UDHCP_SYSLOG -CFLAGS += -DUDHCP_SYSLOG -endif - -CFLAGS += -W -Wall -Wstrict-prototypes -D_GNU_SOURCE - -ifdef UDHCP_DEBUG -CFLAGS += -g -DUDHCP_DEBUG -STRIP=true -else -CFLAGS += -Os -fomit-frame-pointer -STRIP=$(CROSS_COMPILE)strip -endif - -all: $(EXEC1) $(EXEC2) $(EXEC3) - $(STRIP) --remove-section=.note --remove-section=.comment $(EXEC1) $(EXEC2) $(EXEC3) - -$(OBJS1) $(OBJS2) $(OBJS3): *.h Makefile -$(EXEC1) $(EXEC2) $(EXEC3): Makefile - -.c.o: - $(CC) -c $(CFLAGS) $< - -$(EXEC1): $(OBJS1) - $(LD) $(LDFLAGS) $(OBJS1) -o $(EXEC1) - -$(EXEC2): $(OBJS2) - $(LD) $(LDFLAGS) $(OBJS2) -o $(EXEC2) - -$(EXEC3): $(OBJS3) - $(LD) $(LDFLAGS) $(OBJS3) -o $(EXEC3) - - -install: all - mkdir -p $(USRSBINDIR) $(USRBINDIR) - $(INSTALL) -m 755 $(DAEMON) $(USRSBINDIR) - $(INSTALL) -m 755 $(COMMAND) $(USRBINDIR) -ifdef COMBINED_BINARY - ln -sf $(DAEMON) $(USRSBINDIR)/$(BOOT_PROGRAM) -else - $(INSTALL) -m 755 $(BOOT_PROGRAM) $(USRSBINDIR) -endif - mkdir -p $(USRSHAREDIR)/udhcpc - for name in bound deconfig nak renew script ; do \ - $(INSTALL) -m 755 samples/sample.$$name \ - $(USRSHAREDIR)/udhcpc/default.$$name ; \ - done - mkdir -p $(USRSHAREDIR)/man/man1 - $(INSTALL) -m 644 dumpleases.1 $(USRSHAREDIR)/man/man1 - mkdir -p $(USRSHAREDIR)/man/man5 - $(INSTALL) -m 644 udhcpd.conf.5 $(USRSHAREDIR)/man/man5 - mkdir -p $(USRSHAREDIR)/man/man8 - $(INSTALL) -m 644 udhcpc.8 udhcpd.8 $(USRSHAREDIR)/man/man8 - -clean: - -rm -f udhcpd udhcpc dumpleases *.o core diff --git a/udhcp/README b/udhcp/README deleted file mode 100644 index dd99294..0000000 --- a/udhcp/README +++ /dev/null @@ -1,53 +0,0 @@ -udhcp server/client package readme -------------------------- - -The udhcp server/client package is primarily geared towards embedded -systems. It does however, strive to be fully functional, and RFC -compliant. - - -compile time options -------------------- - -The Makefile contains three of the compile time options: - - UDHCP_DEBUG: If UDHCP_DEBUG is defined, udhcpd will output extra - debugging output, compile with -g, and not fork to the background when - run. - UDHCP_SYSLOG: If UDHCP_SYSLOG is defined, udhcpd will log all its - messages syslog, otherwise, it will attempt to log them to stdout. - - COMBINED_BINARY: If COMBINED_BINARY is define, one binary, udhcpd, - is created. If called as udhcpd, the dhcp server will be started. - If called as udhcpc, the dhcp client will be started. - -dhcpd.h contains the other three compile time options: - - LEASE_TIME: The default lease time if not specified in the config - file. - - LEASES_FILE: The default file for storing leases. - - DHCPD_CONFIG_FILE: The defualt config file to use. - -options.c contains a set of dhcp options for the client: - - name[10]: The name of the option as it will appear in scripts - - flags: The type of option, as well as if it will be requested - by the client (OPTION_REQ) - - code: The DHCP code for this option - - -busybox drop-in --------------- -udhcp is now a drop-in component for busybox (http://busybox.net). -To update busybox to the latest revision, simply do a: - -cp *.[ch] README AUTHORS COPYING ChangeLog TODO \ - /networking/udhcp - -The only two files udhcp does not provide are config.in and -Makefile.in, so these may need to be updated from time to time. - diff --git a/udhcp/README.dumpleases b/udhcp/README.dumpleases deleted file mode 100644 index 6367710..0000000 --- a/udhcp/README.dumpleases +++ /dev/null @@ -1,17 +0,0 @@ -udhcp lease dump (dumpleases) ----------------------------- - -dumpleases displays the leases written out by the udhcpd server. Lease -times are stored in the file by time remaining in lease (for systems -without clock that works when there is no power), or by the absolute -time that it expires in seconds from epoch. dumpleases accepts the -following command line options: - --a, --absolute Interpret lease times as expiration time. --r, --remaining Interpret lease times as remaining time. --f, --file=FILE Read lease information from FILE. --h, --help Display help. - -Note that if udhcpd has not written a leases file recently, the output -of may not be up to date. - diff --git a/udhcp/README.udhcpc b/udhcp/README.udhcpc deleted file mode 100644 index 61741d1..0000000 --- a/udhcp/README.udhcpc +++ /dev/null @@ -1,142 +0,0 @@ -udhcp client (udhcpc) --------------------- - -The udhcp client negotiates a lease with the DHCP server and notifies -a set of scripts when a leases is obtained or lost. - - -command line options -------------------- - -The command line options for the udhcp client are: - --c, --clientid=CLIENTID Client identifier --H, --hostname=HOSTNAME Client hostname --h, Alias for -H --F, --fqdn=FQDN Client fully qualified domain name --f, --foreground Do not fork after getting lease --b, --background Fork to background if lease cannot be - immediately negotiated. --i, --interface=INTERFACE Interface to use (default: eth0) --n, --now Exit with failure if lease cannot be - immediately negotiated. --p, --pidfile=file Store process ID of daemon in file --q, --quit Quit after obtaining lease --r, --request=IP IP address to request (default: none) --s, --script=file Run file at dhcp events (default: - /etc/udhcpc/default.script) --v, --version Display version - - -If the requested IP address cannot be obtained, the client accepts the -address that the server offers. - - -udhcp client scripts -------------------- - -When an event occurs, udhcpc calls the action script. udhcpc never does -any configuration of the network interface itself, but instead relies on -a set of scripts. The script by default is -/etc/udhcpc/default.script but this can be changed via the command -line arguments. The three possible arguments to the script are: - - deconfig: This argument is used when udhcpc starts, and - when a leases is lost. The script must put the interface in an - up, but deconfigured state, ie: ifconfig $interface 0.0.0.0. - - bound: This argument is used when udhcpc moves from an - unbound, to a bound state. All of the paramaters are set in - enviromental variables, The script should configure the interface, - and set any other relavent parameters (default gateway, dns server, - etc). - - renew: This argument is used when a DHCP lease is renewed. All of - the paramaters are set in enviromental variables. This argument is - used when the interface is already configured, so the IP address, - will not change, however, the other DHCP paramaters, such as the - default gateway, subnet mask, and dns server may change. - - nak: This argument is used with udhcpc receives a NAK message. - The script with the deconfig argument will be called directly - afterwards, so no changes to the network interface are neccessary. - This hook is provided for purely informational purposes (the - message option may contain a reason for the NAK). - -The paramaters for enviromental variables are as follows: - - $HOME - The set $HOME env or "/" - $PATH - the set $PATH env or "/bin:/usr/bin:/sbin:/usr/sbin" - $1 - What action the script should perform - interface - The interface this was obtained on - ip - The obtained IP - mask - The number of bits in the netmask (ie: 24) - siaddr - The bootp next server option - sname - The bootp server name option - boot_file - The bootp boot file option - subnet - The assigend subnet mask - timezone - Offset in seconds from UTC - router - A list of routers - timesvr - A list of time servers - namesvr - A list of IEN 116 name servers - dns - A list of DNS server - logsvr - A list of MIT-LCS UDP log servers - cookiesvr - A list of RFC 865 cookie servers - lprsvr - A list of LPR servers - hostname - The assigned hostname - bootsize - The length in 512 octect blocks of the bootfile - domain - The domain name of the network - swapsvr - The IP address of the client's swap server - rootpath - The path name of the client's root disk - ipttl - The TTL to use for this network - mtu - The MTU to use for this network - broadcast - The broadcast address for this network - ntpsrv - A list of NTP servers - wins - A list of WINS servers - lease - The lease time, in seconds - dhcptype - DHCP message type (safely ignored) - serverid - The IP of the server - message - Reason for a DHCPNAK - tftp - The TFTP server name - bootfile - The bootfile name - -additional options are easily added in options.c. - - -note on udhcpc's random seed ---------------------------- - -udhcpc will seed its random number generator (used for generating xid's) -by reading /dev/urandom. If you have a lot of embedded systems on the same -network, with no entropy, you can either seed /dev/urandom by a method of -your own, or doing the following on startup: - -ifconfig eth0 > /dev/urandom - -in order to seed /dev/urandom with some data (mac address) unique to your -system. If reading /dev/urandom fails, udhcpc will fall back to its old -behavior of seeding with time(0). - - -signals accepted by udhcpc -------------------------- - -udhcpc also responds to SIGUSR1 and SIGUSR2. SIGUSR1 will force a renew state, -and SIGUSR2 will force a release of the current lease, and cause udhcpc to -go into an inactive state (until it is killed, or receives a SIGUSR1). You do -not need to sleep between sending signals, as signals received are processed -sequencially in the order they are received. - - -compile time options -------------------- - -options.c contains a set of dhcp options for the client: - - name[10]: The name of the option as it will appear in scripts - - flags: The type of option, as well as if it will be requested - by the client (OPTION_REQ) - - code: The DHCP code for this option - diff --git a/udhcp/README.udhcpd b/udhcp/README.udhcpd deleted file mode 100644 index 169de78..0000000 --- a/udhcp/README.udhcpd +++ /dev/null @@ -1,59 +0,0 @@ -udhcp server (udhcpd) --------------------- - -The only command line argument to udhcpd is an optional specifed -config file. If no config file is specified, udhcpd uses the default -config file, /etc/udhcpd.conf. Ex: - -udhcpd /etc/udhcpd.eth1.conf - -The udhcp server employs a number of simple config files: - -udhcpd.leases ------------- - -The udhcpd.leases behavior is designed for an embedded system. The -file is written either every auto_time seconds, or when a SIGUSR1 -is received (the auto_time timer restarts if a SIGUSR1 is received). -If you send a SIGTERM to udhcpd directly after a SIGUSR1, udhcpd will -finish writing the leases file and wait for the aftermentioned script -to be executed and finish before quiting, so you do not need to sleep -between sending signals. When the file is written, a script can be -optionally called to commit the file to flash. Lease times are stored -in the file by time remaining in lease (for systems without clock -that works when there is no power), or by the absolute time that it -expires in seconds from epoch. In the remaining format, expired leases -are stored as zero. The file is of the format: - -16 byte MAC -4 byte ip address -u32 expire time -16 byte MAC -4 byte ip address -u32 expire time -. -etc. - -example: hexdump udhcpd.leases - -0000000 1000 c95a 27d9 0000 0000 0000 0000 0000 -0000010 a8c0 150a 0d00 2d29 5000 23fc 8566 0000 -0000020 0000 0000 0000 0000 a8c0 140a 0d00 4e29 -0000030 - - -udhcpd.conf ----------- - -The format is fairly simple, there is a sample file with all the -available options and comments describing them in samples/udhcpd.conf - -compile time options -------------------- - -dhcpd.h contains the other two compile time options: - - LEASE_TIME: The default lease time if not specified in the config - file. - - DHCPD_CONFIG_FILE: The defualt config file to use. diff --git a/udhcp/TODO b/udhcp/TODO deleted file mode 100644 index 6febe5a..0000000 --- a/udhcp/TODO +++ /dev/null @@ -1,16 +0,0 @@ -TODO ----- -+ Check for valid IP, netmask, hostname, paths, strings, etc -+ Integrade README.*'s with manpages -+ using time(0) breaks if the system clock changes, find a portable solution -+ make failure of reading functions revert to previous value, not the default -+ sanity code for option[OPT_LEN] -+ fix aliasing (ie: eth0:0) -+ better standard linux distro support -+ make sure packet generation works on a wide varitey of arches -+ Interoperability testing -+ Hooks within the DHCP server - * Server notification when a lease is added/removed -+ Additional bootp support in client/server -+ Make serverid option in server configurable -+ Possibly add failure message to DHCP NAK diff --git a/udhcp/arpping.c b/udhcp/arpping.c deleted file mode 100644 index 6662d0b..0000000 --- a/udhcp/arpping.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * arpping.c - * - * Mostly stolen from: dhcpcd - DHCP client daemon - * by Yoichi Hariguchi - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "dhcpd.h" -#include "arpping.h" -#include "common.h" - -/* args: yiaddr - what IP to ping - * ip - our ip - * mac - our arp address - * interface - interface to use - * retn: 1 addr free - * 0 addr used - * -1 error - */ - -/* FIXME: match response against chaddr */ -int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *mac, char *interface) -{ - - int timeout = 2; - int optval = 1; - int s; /* socket */ - int rv = 1; /* return value */ - struct sockaddr addr; /* for interface name */ - struct arpMsg arp; - fd_set fdset; - struct timeval tm; - time_t prevTime; - - - if ((s = socket (PF_PACKET, SOCK_PACKET, htons(ETH_P_ARP))) == -1) { -#ifdef IN_BUSYBOX - LOG(LOG_ERR, bb_msg_can_not_create_raw_socket); -#else - LOG(LOG_ERR, "Could not open raw socket"); -#endif - return -1; - } - - if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(optval)) == -1) { - LOG(LOG_ERR, "Could not setsocketopt on raw socket"); - close(s); - return -1; - } - - /* send arp request */ - memset(&arp, 0, sizeof(arp)); - memcpy(arp.h_dest, MAC_BCAST_ADDR, 6); /* MAC DA */ - memcpy(arp.h_source, mac, 6); /* MAC SA */ - arp.h_proto = htons(ETH_P_ARP); /* protocol type (Ethernet) */ - arp.htype = htons(ARPHRD_ETHER); /* hardware type */ - arp.ptype = htons(ETH_P_IP); /* protocol type (ARP message) */ - arp.hlen = 6; /* hardware address length */ - arp.plen = 4; /* protocol address length */ - arp.operation = htons(ARPOP_REQUEST); /* ARP op code */ - memcpy(arp.sInaddr, &ip, sizeof(ip)); /* source IP address */ - memcpy(arp.sHaddr, mac, 6); /* source hardware address */ - memcpy(arp.tInaddr, &yiaddr, sizeof(yiaddr)); /* target IP address */ - - memset(&addr, 0, sizeof(addr)); - //closes http://bugs.debian.org/283582 - //strcpy(addr.sa_data, interface); - strncpy(addr.sa_data, interface, sizeof(addr.sa_data)-1); - if (sendto(s, &arp, sizeof(arp), 0, &addr, sizeof(addr)) < 0) - rv = 0; - - /* wait arp reply, and check it */ - tm.tv_usec = 0; - prevTime = uptime(); - while (timeout > 0) { - FD_ZERO(&fdset); - FD_SET(s, &fdset); - tm.tv_sec = timeout; - if (select(s + 1, &fdset, (fd_set *) NULL, (fd_set *) NULL, &tm) < 0) { - DEBUG(LOG_ERR, "Error on ARPING request: %m"); - if (errno != EINTR) rv = 0; - } else if (FD_ISSET(s, &fdset)) { - if (recv(s, &arp, sizeof(arp), 0) < 0 ) rv = 0; - if (arp.operation == htons(ARPOP_REPLY) && - bcmp(arp.tHaddr, mac, 6) == 0 && - *((uint32_t *) arp.sInaddr) == yiaddr) { - DEBUG(LOG_INFO, "Valid arp reply receved for this address"); - rv = 0; - break; - } - } - timeout -= uptime() - prevTime; - prevTime = uptime(); - } - close(s); - DEBUG(LOG_INFO, "%salid arp replies for this address", rv ? "No v" : "V"); - return rv; -} diff --git a/udhcp/arpping.h b/udhcp/arpping.h deleted file mode 100644 index 6f27d9f..0000000 --- a/udhcp/arpping.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * arpping .h - */ - -#ifndef ARPPING_H -#define ARPPING_H - -#include -#include -#include -#include - -struct arpMsg { - /* Ethernet header */ - u_char h_dest[6]; /* destination ether addr */ - u_char h_source[6]; /* source ether addr */ - u_short h_proto; /* packet type ID field */ - - /* ARP packet */ - uint16_t htype; /* hardware type (must be ARPHRD_ETHER) */ - uint16_t ptype; /* protocol type (must be ETH_P_IP) */ - uint8_t hlen; /* hardware address length (must be 6) */ - uint8_t plen; /* protocol address length (must be 4) */ - uint16_t operation; /* ARP opcode */ - uint8_t sHaddr[6]; /* sender's hardware address */ - uint8_t sInaddr[4]; /* sender's IP address */ - uint8_t tHaddr[6]; /* target's hardware address */ - uint8_t tInaddr[4]; /* target's IP address */ - uint8_t pad[18]; /* pad for min. Ethernet payload (60 bytes) */ -} __attribute__ ((packed)); - -/* function prototypes */ -int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *arp, char *interface); - -#endif diff --git a/udhcp/clientpacket.c b/udhcp/clientpacket.c deleted file mode 100644 index c5e1c21..0000000 --- a/udhcp/clientpacket.c +++ /dev/null @@ -1,249 +0,0 @@ -/* clientpacket.c - * - * Packet generation and dispatching functions for the DHCP client. - * - * Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1 -#include -#include -#else -#include -#include -#include -#endif -#include -#include -#include -#include -#include -#include - - -#include "dhcpd.h" -#include "clientpacket.h" -#include "options.h" -#include "dhcpc.h" -#include "common.h" - - -/* Create a random xid */ -unsigned long random_xid(void) -{ - static int initialized; - if (!initialized) { - int fd; - unsigned long seed; - - fd = open("/dev/urandom", 0); - if (fd < 0 || read(fd, &seed, sizeof(seed)) < 0) { - LOG(LOG_WARNING, "Could not load seed from /dev/urandom: %m"); - seed = time(0); - } - if (fd >= 0) close(fd); - srand(seed); - initialized++; - } - return rand(); -} - - -/* initialize a packet with the proper defaults */ -static void init_packet(struct dhcpMessage *packet, char type) -{ - struct vendor { - char vendor, length; - char str[sizeof("udhcp "VERSION)]; - } vendor_id = { DHCP_VENDOR, sizeof("udhcp "VERSION) - 1, "udhcp "VERSION}; - - init_header(packet, type); - memcpy(packet->chaddr, client_config.arp, 6); - add_option_string(packet->options, client_config.clientid); - if (client_config.hostname) add_option_string(packet->options, client_config.hostname); - if (client_config.fqdn) add_option_string(packet->options, client_config.fqdn); - add_option_string(packet->options, (uint8_t *) &vendor_id); -} - - -/* Add a parameter request list for stubborn DHCP servers. Pull the data - * from the struct in options.c. Don't do bounds checking here because it - * goes towards the head of the packet. */ -static void add_requests(struct dhcpMessage *packet) -{ - int end = end_option(packet->options); - int i, len = 0; - - packet->options[end + OPT_CODE] = DHCP_PARAM_REQ; - for (i = 0; dhcp_options[i].code; i++) - if (dhcp_options[i].flags & OPTION_REQ) - packet->options[end + OPT_DATA + len++] = dhcp_options[i].code; - packet->options[end + OPT_LEN] = len; - packet->options[end + OPT_DATA + len] = DHCP_END; - -} - - -/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */ -int send_discover(unsigned long xid, unsigned long requested) -{ - struct dhcpMessage packet; - - init_packet(&packet, DHCPDISCOVER); - packet.xid = xid; - if (requested) - add_simple_option(packet.options, DHCP_REQUESTED_IP, requested); - - add_requests(&packet); - LOG(LOG_DEBUG, "Sending discover..."); - return raw_packet(&packet, INADDR_ANY, CLIENT_PORT, INADDR_BROADCAST, - SERVER_PORT, MAC_BCAST_ADDR, client_config.ifindex); -} - - -/* Broadcasts a DHCP request message */ -int send_selecting(unsigned long xid, unsigned long server, unsigned long requested) -{ - struct dhcpMessage packet; - struct in_addr addr; - - init_packet(&packet, DHCPREQUEST); - packet.xid = xid; - - add_simple_option(packet.options, DHCP_REQUESTED_IP, requested); - add_simple_option(packet.options, DHCP_SERVER_ID, server); - - add_requests(&packet); - addr.s_addr = requested; - LOG(LOG_DEBUG, "Sending select for %s...", inet_ntoa(addr)); - return raw_packet(&packet, INADDR_ANY, CLIENT_PORT, INADDR_BROADCAST, - SERVER_PORT, MAC_BCAST_ADDR, client_config.ifindex); -} - - -/* Unicasts or broadcasts a DHCP renew message */ -int send_renew(unsigned long xid, unsigned long server, unsigned long ciaddr) -{ - struct dhcpMessage packet; - int ret = 0; - - init_packet(&packet, DHCPREQUEST); - packet.xid = xid; - packet.ciaddr = ciaddr; - - add_requests(&packet); - LOG(LOG_DEBUG, "Sending renew..."); - if (server) - ret = kernel_packet(&packet, ciaddr, CLIENT_PORT, server, SERVER_PORT); - else ret = raw_packet(&packet, INADDR_ANY, CLIENT_PORT, INADDR_BROADCAST, - SERVER_PORT, MAC_BCAST_ADDR, client_config.ifindex); - return ret; -} - - -/* Unicasts a DHCP release message */ -int send_release(unsigned long server, unsigned long ciaddr) -{ - struct dhcpMessage packet; - - init_packet(&packet, DHCPRELEASE); - packet.xid = random_xid(); - packet.ciaddr = ciaddr; - - add_simple_option(packet.options, DHCP_REQUESTED_IP, ciaddr); - add_simple_option(packet.options, DHCP_SERVER_ID, server); - - LOG(LOG_DEBUG, "Sending release..."); - return kernel_packet(&packet, ciaddr, CLIENT_PORT, server, SERVER_PORT); -} - - -/* return -1 on errors that are fatal for the socket, -2 for those that aren't */ -int get_raw_packet(struct dhcpMessage *payload, int fd) -{ - int bytes; - struct udp_dhcp_packet packet; - uint32_t source, dest; - uint16_t check; - - memset(&packet, 0, sizeof(struct udp_dhcp_packet)); - bytes = read(fd, &packet, sizeof(struct udp_dhcp_packet)); - if (bytes < 0) { - DEBUG(LOG_INFO, "couldn't read on raw listening socket -- ignoring"); - usleep(500000); /* possible down interface, looping condition */ - return -1; - } - - if (bytes < (int) (sizeof(struct iphdr) + sizeof(struct udphdr))) { - DEBUG(LOG_INFO, "message too short, ignoring"); - return -2; - } - - if (bytes < ntohs(packet.ip.tot_len)) { - DEBUG(LOG_INFO, "Truncated packet"); - return -2; - } - - /* ignore any extra garbage bytes */ - bytes = ntohs(packet.ip.tot_len); - - /* Make sure its the right packet for us, and that it passes sanity checks */ - if (packet.ip.protocol != IPPROTO_UDP || packet.ip.version != IPVERSION || - packet.ip.ihl != sizeof(packet.ip) >> 2 || packet.udp.dest != htons(CLIENT_PORT) || - bytes > (int) sizeof(struct udp_dhcp_packet) || - ntohs(packet.udp.len) != (uint16_t) (bytes - sizeof(packet.ip))) { - DEBUG(LOG_INFO, "unrelated/bogus packet"); - return -2; - } - - /* check IP checksum */ - check = packet.ip.check; - packet.ip.check = 0; - if (check != checksum(&(packet.ip), sizeof(packet.ip))) { - DEBUG(LOG_INFO, "bad IP header checksum, ignoring"); - return -1; - } - - /* verify the UDP checksum by replacing the header with a psuedo header */ - source = packet.ip.saddr; - dest = packet.ip.daddr; - check = packet.udp.check; - packet.udp.check = 0; - memset(&packet.ip, 0, sizeof(packet.ip)); - - packet.ip.protocol = IPPROTO_UDP; - packet.ip.saddr = source; - packet.ip.daddr = dest; - packet.ip.tot_len = packet.udp.len; /* cheat on the psuedo-header */ - if (check && check != checksum(&packet, bytes)) { - DEBUG(LOG_ERR, "packet with bad UDP checksum received, ignoring"); - return -2; - } - - memcpy(payload, &(packet.data), bytes - (sizeof(packet.ip) + sizeof(packet.udp))); - - if (ntohl(payload->cookie) != DHCP_MAGIC) { - LOG(LOG_ERR, "received bogus message (bad magic) -- ignoring"); - return -2; - } - DEBUG(LOG_INFO, "oooooh!!! got some!"); - return bytes - (sizeof(packet.ip) + sizeof(packet.udp)); - -} diff --git a/udhcp/clientpacket.h b/udhcp/clientpacket.h deleted file mode 100644 index 8e5441b..0000000 --- a/udhcp/clientpacket.h +++ /dev/null @@ -1,14 +0,0 @@ -#ifndef _CLIENTPACKET_H -#define _CLIENTPACKET_H - -#include "packet.h" - -unsigned long random_xid(void); -int send_discover(unsigned long xid, unsigned long requested); -int send_selecting(unsigned long xid, unsigned long server, unsigned long requested); -int send_renew(unsigned long xid, unsigned long server, unsigned long ciaddr); -int send_renew(unsigned long xid, unsigned long server, unsigned long ciaddr); -int send_release(unsigned long server, unsigned long ciaddr); -int get_raw_packet(struct dhcpMessage *payload, int fd); - -#endif diff --git a/udhcp/clientsocket.c b/udhcp/clientsocket.c deleted file mode 100644 index 7c1b6e8..0000000 --- a/udhcp/clientsocket.c +++ /dev/null @@ -1,62 +0,0 @@ -/* - * clientsocket.c -- DHCP client socket creation - * - * udhcp client - * - * Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1 -#include -#include -#else -#include -#include -#include -#endif - -#include "clientsocket.h" -#include "common.h" - - -int raw_socket(int ifindex) -{ - int fd; - struct sockaddr_ll sock; - - DEBUG(LOG_INFO, "Opening raw socket on ifindex %d", ifindex); - if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) { - DEBUG(LOG_ERR, "socket call failed: %m"); - return -1; - } - - sock.sll_family = AF_PACKET; - sock.sll_protocol = htons(ETH_P_IP); - sock.sll_ifindex = ifindex; - if (bind(fd, (struct sockaddr *) &sock, sizeof(sock)) < 0) { - DEBUG(LOG_ERR, "bind call failed: %m"); - close(fd); - return -1; - } - - return fd; -} diff --git a/udhcp/clientsocket.h b/udhcp/clientsocket.h deleted file mode 100644 index 17a55c1..0000000 --- a/udhcp/clientsocket.h +++ /dev/null @@ -1,7 +0,0 @@ -/* clientsocket.h */ -#ifndef _CLIENTSOCKET_H -#define _CLIENTSOCKET_H - -int raw_socket(int ifindex); - -#endif diff --git a/udhcp/common.c b/udhcp/common.c deleted file mode 100644 index bf2ac44..0000000 --- a/udhcp/common.c +++ /dev/null @@ -1,162 +0,0 @@ -/* common.c - * - * Functions for debugging and logging as well as some other - * simple helper functions. - * - * Russ Dill 2001-2003 - * Rewritten by Vladimir Oleynik (C) 2003 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "common.h" -#include "pidfile.h" - - -static int daemonized; - -long uptime(void) -{ - struct sysinfo info; - sysinfo(&info); - return info.uptime; -} - - -/* - * This function makes sure our first socket calls - * aren't going to fd 1 (printf badness...) and are - * not later closed by daemon() - */ -static inline void sanitize_fds(void) -{ - int zero; - if ((zero = open(_PATH_DEVNULL, O_RDWR, 0)) < 0) return; - while (zero < 3) zero = dup(zero); - close(zero); -} - - -void background(const char *pidfile) -{ -#ifdef __uClinux__ - LOG(LOG_ERR, "Cannot background in uclinux (yet)"); -#else /* __uClinux__ */ - int pid_fd; - - /* hold lock during fork. */ - pid_fd = pidfile_acquire(pidfile); - if (daemon(0, 0) == -1) { - perror("fork"); - exit(1); - } - daemonized++; - pidfile_write_release(pid_fd); -#endif /* __uClinux__ */ -} - - -#ifdef UDHCP_SYSLOG -void udhcp_logging(int level, const char *fmt, ...) -{ - va_list p; - va_list p2; - - va_start(p, fmt); - __va_copy(p2, p); - if(!daemonized) { - vprintf(fmt, p); - putchar('\n'); - } - vsyslog(level, fmt, p2); - va_end(p); -} - - -void start_log_and_pid(const char *client_server, const char *pidfile) -{ - int pid_fd; - - /* Make sure our syslog fd isn't overwritten */ - sanitize_fds(); - - /* do some other misc startup stuff while we are here to save bytes */ - pid_fd = pidfile_acquire(pidfile); - pidfile_write_release(pid_fd); - - /* equivelent of doing a fflush after every \n */ - setlinebuf(stdout); - - openlog(client_server, LOG_PID | LOG_CONS, LOG_LOCAL0); - udhcp_logging(LOG_INFO, "%s (v%s) started", client_server, VERSION); -} - - -#else - - -static char *syslog_level_msg[] = { - [LOG_EMERG] = "EMERGENCY!", - [LOG_ALERT] = "ALERT!", - [LOG_CRIT] = "critical!", - [LOG_WARNING] = "warning", - [LOG_ERR] = "error", - [LOG_INFO] = "info", - [LOG_DEBUG] = "debug" -}; - - -void udhcp_logging(int level, const char *fmt, ...) -{ - va_list p; - - va_start(p, fmt); - if(!daemonized) { - printf("%s, ", syslog_level_msg[level]); - vprintf(fmt, p); - putchar('\n'); - } - va_end(p); -} - - -void start_log_and_pid(const char *client_server, const char *pidfile) -{ - int pid_fd; - - /* Make sure our syslog fd isn't overwritten */ - sanitize_fds(); - - /* do some other misc startup stuff while we are here to save bytes */ - pid_fd = pidfile_acquire(pidfile); - pidfile_write_release(pid_fd); - - /* equivelent of doing a fflush after every \n */ - setlinebuf(stdout); - - udhcp_logging(LOG_INFO, "%s (v%s) started", client_server, VERSION); -} -#endif - diff --git a/udhcp/common.h b/udhcp/common.h deleted file mode 100644 index ca19a24..0000000 --- a/udhcp/common.h +++ /dev/null @@ -1,56 +0,0 @@ -/* common.h - * - * Russ Dill September 2001 - * Rewritten by Vladimir Oleynik (C) 2003 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef _COMMON_H -#define _COMMON_H - -#include "version.h" -#include "libbb_udhcp.h" - - -#ifndef UDHCP_SYSLOG -enum syslog_levels { - LOG_EMERG = 0, - LOG_ALERT, - LOG_CRIT, - LOG_WARNING, - LOG_ERR, - LOG_INFO, - LOG_DEBUG -}; -#else -#include -#endif - -long uptime(void); -void background(const char *pidfile); -void start_log_and_pid(const char *client_server, const char *pidfile); -void background(const char *pidfile); -void udhcp_logging(int level, const char *fmt, ...); - -#define LOG(level, str, args...) udhcp_logging(level, str, ## args) - -#ifdef UDHCP_DEBUG -# define DEBUG(level, str, args...) LOG(level, str, ## args) -#else -# define DEBUG(level, str, args...) do {;} while(0) -#endif - -#endif diff --git a/udhcp/dhcpc.c b/udhcp/dhcpc.c deleted file mode 100644 index 95fa815..0000000 --- a/udhcp/dhcpc.c +++ /dev/null @@ -1,537 +0,0 @@ -/* dhcpc.c - * - * udhcp DHCP client - * - * Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "dhcpd.h" -#include "dhcpc.h" -#include "options.h" -#include "clientpacket.h" -#include "clientsocket.h" -#include "script.h" -#include "socket.h" -#include "common.h" -#include "signalpipe.h" - -static int state; -static unsigned long requested_ip; /* = 0 */ -static unsigned long server_addr; -static unsigned long timeout; -static int packet_num; /* = 0 */ -static int fd = -1; - -#define LISTEN_NONE 0 -#define LISTEN_KERNEL 1 -#define LISTEN_RAW 2 -static int listen_mode; - -struct client_config_t client_config = { - /* Default options. */ - abort_if_no_lease: 0, - foreground: 0, - quit_after_lease: 0, - background_if_no_lease: 0, - interface: "eth0", - pidfile: NULL, - script: DEFAULT_SCRIPT, - clientid: NULL, - hostname: NULL, - fqdn: NULL, - ifindex: 0, - arp: "\0\0\0\0\0\0", /* appease gcc-3.0 */ -}; - -#ifndef IN_BUSYBOX -static void __attribute__ ((noreturn)) show_usage(void) -{ - printf( -"Usage: udhcpc [OPTIONS]\n\n" -" -c, --clientid=CLIENTID Client identifier\n" -" -H, --hostname=HOSTNAME Client hostname\n" -" -h Alias for -H\n" -" -F, --fqdn=FQDN Client fully qualified domain name\n" -" -f, --foreground Do not fork after getting lease\n" -" -b, --background Fork to background if lease cannot be\n" -" immediately negotiated.\n" -" -i, --interface=INTERFACE Interface to use (default: eth0)\n" -" -n, --now Exit with failure if lease cannot be\n" -" immediately negotiated.\n" -" -p, --pidfile=file Store process ID of daemon in file\n" -" -q, --quit Quit after obtaining lease\n" -" -r, --request=IP IP address to request (default: none)\n" -" -s, --script=file Run file at dhcp events (default:\n" -" " DEFAULT_SCRIPT ")\n" -" -v, --version Display version\n" - ); - exit(0); -} -#else -#define show_usage bb_show_usage -extern void show_usage(void) __attribute__ ((noreturn)); -#endif - - -/* just a little helper */ -static void change_mode(int new_mode) -{ - DEBUG(LOG_INFO, "entering %s listen mode", - new_mode ? (new_mode == 1 ? "kernel" : "raw") : "none"); - if (fd >= 0) close(fd); - fd = -1; - listen_mode = new_mode; -} - - -/* perform a renew */ -static void perform_renew(void) -{ - LOG(LOG_INFO, "Performing a DHCP renew"); - switch (state) { - case BOUND: - change_mode(LISTEN_KERNEL); - case RENEWING: - case REBINDING: - state = RENEW_REQUESTED; - break; - case RENEW_REQUESTED: /* impatient are we? fine, square 1 */ - run_script(NULL, "deconfig"); - case REQUESTING: - case RELEASED: - change_mode(LISTEN_RAW); - state = INIT_SELECTING; - break; - case INIT_SELECTING: - break; - } - - /* start things over */ - packet_num = 0; - - /* Kill any timeouts because the user wants this to hurry along */ - timeout = 0; -} - - -/* perform a release */ -static void perform_release(void) -{ - char buffer[16]; - struct in_addr temp_addr; - - /* send release packet */ - if (state == BOUND || state == RENEWING || state == REBINDING) { - temp_addr.s_addr = server_addr; - sprintf(buffer, "%s", inet_ntoa(temp_addr)); - temp_addr.s_addr = requested_ip; - LOG(LOG_INFO, "Unicasting a release of %s to %s", - inet_ntoa(temp_addr), buffer); - send_release(server_addr, requested_ip); /* unicast */ - run_script(NULL, "deconfig"); - } - LOG(LOG_INFO, "Entering released state"); - - change_mode(LISTEN_NONE); - state = RELEASED; - timeout = 0x7fffffff; -} - - -static void client_background(void) -{ - background(client_config.pidfile); - client_config.foreground = 1; /* Do not fork again. */ - client_config.background_if_no_lease = 0; -} - - -#ifdef COMBINED_BINARY -int udhcpc_main(int argc, char *argv[]) -#else -int main(int argc, char *argv[]) -#endif -{ - uint8_t *temp, *message; - unsigned long t1 = 0, t2 = 0, xid = 0; - unsigned long start = 0, lease; - fd_set rfds; - int retval; - struct timeval tv; - int c, len; - struct dhcpMessage packet; - struct in_addr temp_addr; - long now; - int max_fd; - int sig; - - static const struct option arg_options[] = { - {"clientid", required_argument, 0, 'c'}, - {"foreground", no_argument, 0, 'f'}, - {"background", no_argument, 0, 'b'}, - {"hostname", required_argument, 0, 'H'}, - {"hostname", required_argument, 0, 'h'}, - {"fqdn", required_argument, 0, 'F'}, - {"interface", required_argument, 0, 'i'}, - {"now", no_argument, 0, 'n'}, - {"pidfile", required_argument, 0, 'p'}, - {"quit", no_argument, 0, 'q'}, - {"request", required_argument, 0, 'r'}, - {"script", required_argument, 0, 's'}, - {"version", no_argument, 0, 'v'}, - {0, 0, 0, 0} - }; - - /* get options */ - while (1) { - int option_index = 0; - c = getopt_long(argc, argv, "c:fbH:h:F:i:np:qr:s:v", arg_options, &option_index); - if (c == -1) break; - - switch (c) { - case 'c': - len = strlen(optarg) > 255 ? 255 : strlen(optarg); - if (client_config.clientid) free(client_config.clientid); - client_config.clientid = xmalloc(len + 2); - client_config.clientid[OPT_CODE] = DHCP_CLIENT_ID; - client_config.clientid[OPT_LEN] = len; - client_config.clientid[OPT_DATA] = '\0'; - strncpy(client_config.clientid + OPT_DATA, optarg, len); - break; - case 'f': - client_config.foreground = 1; - break; - case 'b': - client_config.background_if_no_lease = 1; - break; - case 'h': - case 'H': - len = strlen(optarg) > 255 ? 255 : strlen(optarg); - if (client_config.hostname) free(client_config.hostname); - client_config.hostname = xmalloc(len + 2); - client_config.hostname[OPT_CODE] = DHCP_HOST_NAME; - client_config.hostname[OPT_LEN] = len; - strncpy(client_config.hostname + 2, optarg, len); - break; - case 'F': - len = strlen(optarg) > 255 ? 255 : strlen(optarg); - if (client_config.fqdn) free(client_config.fqdn); - client_config.fqdn = xmalloc(len + 5); - client_config.fqdn[OPT_CODE] = DHCP_FQDN; - client_config.fqdn[OPT_LEN] = len + 3; - /* Flags: 0000NEOS - S: 1 => Client requests Server to update A RR in DNS as well as PTR - O: 1 => Server indicates to client that DNS has been updated regardless - E: 1 => Name data is DNS format, i.e. <4>host<6>domain<4>com<0> not "host.domain.com" - N: 1 => Client requests Server to not update DNS - */ - client_config.fqdn[OPT_LEN + 1] = 0x1; - client_config.fqdn[OPT_LEN + 2] = 0; - client_config.fqdn[OPT_LEN + 3] = 0; - strncpy(client_config.fqdn + 5, optarg, len); - break; - case 'i': - client_config.interface = optarg; - break; - case 'n': - client_config.abort_if_no_lease = 1; - break; - case 'p': - client_config.pidfile = optarg; - break; - case 'q': - client_config.quit_after_lease = 1; - break; - case 'r': - requested_ip = inet_addr(optarg); - break; - case 's': - client_config.script = optarg; - break; - case 'v': - printf("udhcpcd, version %s\n\n", VERSION); - return 0; - break; - default: - show_usage(); - } - } - - /* Start the log, sanitize fd's, and write a pid file */ - start_log_and_pid("udhcpc", client_config.pidfile); - - if (read_interface(client_config.interface, &client_config.ifindex, - NULL, client_config.arp) < 0) - return 1; - - if (!client_config.clientid) { - client_config.clientid = xmalloc(6 + 3); - client_config.clientid[OPT_CODE] = DHCP_CLIENT_ID; - client_config.clientid[OPT_LEN] = 7; - client_config.clientid[OPT_DATA] = 1; - memcpy(client_config.clientid + 3, client_config.arp, 6); - } - - /* setup the signal pipe */ - udhcp_sp_setup(); - - state = INIT_SELECTING; - run_script(NULL, "deconfig"); - change_mode(LISTEN_RAW); - - for (;;) { - - tv.tv_sec = timeout - uptime(); - tv.tv_usec = 0; - - if (listen_mode != LISTEN_NONE && fd < 0) { - if (listen_mode == LISTEN_KERNEL) - fd = listen_socket(INADDR_ANY, CLIENT_PORT, client_config.interface); - else - fd = raw_socket(client_config.ifindex); - if (fd < 0) { - LOG(LOG_ERR, "FATAL: couldn't listen on socket, %m"); - return 0; - } - } - max_fd = udhcp_sp_fd_set(&rfds, fd); - - if (tv.tv_sec > 0) { - DEBUG(LOG_INFO, "Waiting on select..."); - retval = select(max_fd + 1, &rfds, NULL, NULL, &tv); - } else retval = 0; /* If we already timed out, fall through */ - - now = uptime(); - if (retval == 0) { - /* timeout dropped to zero */ - switch (state) { - case INIT_SELECTING: - if (packet_num < 3) { - if (packet_num == 0) - xid = random_xid(); - - /* send discover packet */ - send_discover(xid, requested_ip); /* broadcast */ - - timeout = now + ((packet_num == 2) ? 4 : 2); - packet_num++; - } else { - run_script(NULL, "leasefail"); - if (client_config.background_if_no_lease) { - LOG(LOG_INFO, "No lease, forking to background."); - client_background(); - } else if (client_config.abort_if_no_lease) { - LOG(LOG_INFO, "No lease, failing."); - return 1; - } - /* wait to try again */ - packet_num = 0; - timeout = now + 60; - } - break; - case RENEW_REQUESTED: - case REQUESTING: - if (packet_num < 3) { - /* send request packet */ - if (state == RENEW_REQUESTED) - send_renew(xid, server_addr, requested_ip); /* unicast */ - else send_selecting(xid, server_addr, requested_ip); /* broadcast */ - - timeout = now + ((packet_num == 2) ? 10 : 2); - packet_num++; - } else { - /* timed out, go back to init state */ - if (state == RENEW_REQUESTED) run_script(NULL, "deconfig"); - state = INIT_SELECTING; - timeout = now; - packet_num = 0; - change_mode(LISTEN_RAW); - } - break; - case BOUND: - /* Lease is starting to run out, time to enter renewing state */ - state = RENEWING; - change_mode(LISTEN_KERNEL); - DEBUG(LOG_INFO, "Entering renew state"); - /* fall right through */ - case RENEWING: - /* Either set a new T1, or enter REBINDING state */ - if ((t2 - t1) <= (lease / 14400 + 1)) { - /* timed out, enter rebinding state */ - state = REBINDING; - timeout = now + (t2 - t1); - DEBUG(LOG_INFO, "Entering rebinding state"); - } else { - /* send a request packet */ - send_renew(xid, server_addr, requested_ip); /* unicast */ - - t1 = (t2 - t1) / 2 + t1; - timeout = t1 + start; - } - break; - case REBINDING: - /* Either set a new T2, or enter INIT state */ - if ((lease - t2) <= (lease / 14400 + 1)) { - /* timed out, enter init state */ - state = INIT_SELECTING; - LOG(LOG_INFO, "Lease lost, entering init state"); - run_script(NULL, "deconfig"); - timeout = now; - packet_num = 0; - change_mode(LISTEN_RAW); - } else { - /* send a request packet */ - send_renew(xid, 0, requested_ip); /* broadcast */ - - t2 = (lease - t2) / 2 + t2; - timeout = t2 + start; - } - break; - case RELEASED: - /* yah, I know, *you* say it would never happen */ - timeout = 0x7fffffff; - break; - } - } else if (retval > 0 && listen_mode != LISTEN_NONE && FD_ISSET(fd, &rfds)) { - /* a packet is ready, read it */ - - if (listen_mode == LISTEN_KERNEL) - len = get_packet(&packet, fd); - else len = get_raw_packet(&packet, fd); - - if (len == -1 && errno != EINTR) { - DEBUG(LOG_INFO, "error on read, %m, reopening socket"); - change_mode(listen_mode); /* just close and reopen */ - } - if (len < 0) continue; - - if (packet.xid != xid) { - DEBUG(LOG_INFO, "Ignoring XID %lx (our xid is %lx)", - (unsigned long) packet.xid, xid); - continue; - } - - if ((message = get_option(&packet, DHCP_MESSAGE_TYPE)) == NULL) { - DEBUG(LOG_ERR, "couldnt get option from packet -- ignoring"); - continue; - } - - switch (state) { - case INIT_SELECTING: - /* Must be a DHCPOFFER to one of our xid's */ - if (*message == DHCPOFFER) { - if ((temp = get_option(&packet, DHCP_SERVER_ID))) { - memcpy(&server_addr, temp, 4); - xid = packet.xid; - requested_ip = packet.yiaddr; - - /* enter requesting state */ - state = REQUESTING; - timeout = now; - packet_num = 0; - } else { - DEBUG(LOG_ERR, "No server ID in message"); - } - } - break; - case RENEW_REQUESTED: - case REQUESTING: - case RENEWING: - case REBINDING: - if (*message == DHCPACK) { - if (!(temp = get_option(&packet, DHCP_LEASE_TIME))) { - LOG(LOG_ERR, "No lease time with ACK, using 1 hour lease"); - lease = 60 * 60; - } else { - memcpy(&lease, temp, 4); - lease = ntohl(lease); - } - - /* enter bound state */ - t1 = lease / 2; - - /* little fixed point for n * .875 */ - t2 = (lease * 0x7) >> 3; - temp_addr.s_addr = packet.yiaddr; - LOG(LOG_INFO, "Lease of %s obtained, lease time %ld", - inet_ntoa(temp_addr), lease); - start = now; - timeout = t1 + start; - requested_ip = packet.yiaddr; - run_script(&packet, - ((state == RENEWING || state == REBINDING) ? "renew" : "bound")); - - state = BOUND; - change_mode(LISTEN_NONE); - if (client_config.quit_after_lease) - return 0; - if (!client_config.foreground) - client_background(); - - } else if (*message == DHCPNAK) { - /* return to init state */ - LOG(LOG_INFO, "Received DHCP NAK"); - run_script(&packet, "nak"); - if (state != REQUESTING) - run_script(NULL, "deconfig"); - state = INIT_SELECTING; - timeout = now; - requested_ip = 0; - packet_num = 0; - change_mode(LISTEN_RAW); - sleep(3); /* avoid excessive network traffic */ - } - break; - /* case BOUND, RELEASED: - ignore all packets */ - } - } else if (retval > 0 && (sig = udhcp_sp_read(&rfds))) { - switch (sig) { - case SIGUSR1: - perform_renew(); - break; - case SIGUSR2: - perform_release(); - break; - case SIGTERM: - LOG(LOG_INFO, "Received SIGTERM"); - return 0; - } - } else if (retval == -1 && errno == EINTR) { - /* a signal was caught */ - } else { - /* An error occured */ - DEBUG(LOG_ERR, "Error on select"); - } - - } - return 0; -} diff --git a/udhcp/dhcpc.h b/udhcp/dhcpc.h deleted file mode 100644 index edba6a1..0000000 --- a/udhcp/dhcpc.h +++ /dev/null @@ -1,38 +0,0 @@ -/* dhcpc.h */ -#ifndef _DHCPC_H -#define _DHCPC_H - -#define DEFAULT_SCRIPT "/etc/udhcpc/default.script" - -/* allow libbb_udhcp.h to redefine DEFAULT_SCRIPT */ -#include "libbb_udhcp.h" - -#define INIT_SELECTING 0 -#define REQUESTING 1 -#define BOUND 2 -#define RENEWING 3 -#define REBINDING 4 -#define INIT_REBOOT 5 -#define RENEW_REQUESTED 6 -#define RELEASED 7 - - -struct client_config_t { - char foreground; /* Do not fork */ - char quit_after_lease; /* Quit after obtaining lease */ - char abort_if_no_lease; /* Abort if no lease */ - char background_if_no_lease; /* Fork to background if no lease */ - char *interface; /* The name of the interface to use */ - char *pidfile; /* Optionally store the process ID */ - char *script; /* User script to run at dhcp events */ - uint8_t *clientid; /* Optional client id to use */ - uint8_t *hostname; /* Optional hostname to use */ - uint8_t *fqdn; /* Optional fully qualified domain name to use */ - int ifindex; /* Index number of the interface to use */ - uint8_t arp[6]; /* Our arp address */ -}; - -extern struct client_config_t client_config; - - -#endif diff --git a/udhcp/dhcpd.c b/udhcp/dhcpd.c deleted file mode 100644 index 767f9b0..0000000 --- a/udhcp/dhcpd.c +++ /dev/null @@ -1,275 +0,0 @@ -/* dhcpd.c - * - * udhcp Server - * Copyright (C) 1999 Matthew Ramsay - * Chris Trew - * - * Rewrite by Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "dhcpd.h" -#include "arpping.h" -#include "socket.h" -#include "options.h" -#include "files.h" -#include "serverpacket.h" -#include "common.h" -#include "signalpipe.h" -#include "static_leases.h" - - -/* globals */ -struct dhcpOfferedAddr *leases; -struct server_config_t server_config; - - -#ifdef COMBINED_BINARY -int udhcpd_main(int argc, char *argv[]) -#else -int main(int argc, char *argv[]) -#endif -{ - fd_set rfds; - struct timeval tv; - int server_socket = -1; - int bytes, retval; - struct dhcpMessage packet; - uint8_t *state; - uint8_t *server_id, *requested; - uint32_t server_id_align, requested_align; - unsigned long timeout_end; - struct option_set *option; - struct dhcpOfferedAddr *lease; - struct dhcpOfferedAddr static_lease; - int max_sock; - unsigned long num_ips; - - uint32_t static_lease_ip; - - memset(&server_config, 0, sizeof(struct server_config_t)); - read_config(argc < 2 ? DHCPD_CONF_FILE : argv[1]); - - /* Start the log, sanitize fd's, and write a pid file */ - start_log_and_pid("udhcpd", server_config.pidfile); - - if ((option = find_option(server_config.options, DHCP_LEASE_TIME))) { - memcpy(&server_config.lease, option->data + 2, 4); - server_config.lease = ntohl(server_config.lease); - } - else server_config.lease = LEASE_TIME; - - /* Sanity check */ - // Let's try to fix http://bugs.debian.org/341139 (ericvb@debian.org - 16/12/05) - //num_ips = ntohl(server_config.end) - ntohl(server_config.start); - num_ips = ntohl(server_config.end) - ntohl(server_config.start) + 1; - if (server_config.max_leases > num_ips) { - LOG(LOG_ERR, "max_leases value (%lu) not sane, " - "setting to %lu instead", - server_config.max_leases, num_ips); - server_config.max_leases = num_ips; - } - - leases = xcalloc(server_config.max_leases, sizeof(struct dhcpOfferedAddr)); - read_leases(server_config.lease_file); - - if (read_interface(server_config.interface, &server_config.ifindex, - &server_config.server, server_config.arp) < 0) - return 1; - -#ifndef UDHCP_DEBUG - background(server_config.pidfile); /* hold lock during fork. */ -#endif - - /* Setup the signal pipe */ - udhcp_sp_setup(); - - timeout_end = time(0) + server_config.auto_time; - while(1) { /* loop until universe collapses */ - - if (server_socket < 0) - if ((server_socket = listen_socket(INADDR_ANY, SERVER_PORT, server_config.interface)) < 0) { - LOG(LOG_ERR, "FATAL: couldn't create server socket, %m"); - return 2; - } - - max_sock = udhcp_sp_fd_set(&rfds, server_socket); - if (server_config.auto_time) { - tv.tv_sec = timeout_end - time(0); - tv.tv_usec = 0; - } - if (!server_config.auto_time || tv.tv_sec > 0) { - retval = select(max_sock + 1, &rfds, NULL, NULL, - server_config.auto_time ? &tv : NULL); - } else retval = 0; /* If we already timed out, fall through */ - - if (retval == 0) { - write_leases(); - timeout_end = time(0) + server_config.auto_time; - continue; - } else if (retval < 0 && errno != EINTR) { - DEBUG(LOG_INFO, "error on select"); - continue; - } - - switch (udhcp_sp_read(&rfds)) { - case SIGUSR1: - LOG(LOG_INFO, "Received a SIGUSR1"); - write_leases(); - /* why not just reset the timeout, eh */ - timeout_end = time(0) + server_config.auto_time; - continue; - case SIGTERM: - LOG(LOG_INFO, "Received a SIGTERM"); - return 0; - case 0: break; /* no signal */ - default: continue; /* signal or error (probably EINTR) */ - } - - if ((bytes = get_packet(&packet, server_socket)) < 0) { /* this waits for a packet - idle */ - if (bytes == -1 && errno != EINTR) { - DEBUG(LOG_INFO, "error on read, %m, reopening socket"); - close(server_socket); - server_socket = -1; - } - continue; - } - - if ((state = get_option(&packet, DHCP_MESSAGE_TYPE)) == NULL) { - DEBUG(LOG_ERR, "couldn't get option from packet, ignoring"); - continue; - } - - /* Look for a static lease */ - static_lease_ip = getIpByMac(server_config.static_leases, &packet.chaddr); - - if(static_lease_ip) - { - printf("Found static lease: %x\n", static_lease_ip); - - memcpy(&static_lease.chaddr, &packet.chaddr, 16); - static_lease.yiaddr = static_lease_ip; - static_lease.expires = 0; - - lease = &static_lease; - - } - else - { - lease = find_lease_by_chaddr(packet.chaddr); - } - - switch (state[0]) { - case DHCPDISCOVER: - DEBUG(LOG_INFO,"received DISCOVER"); - - if (sendOffer(&packet) < 0) { - LOG(LOG_ERR, "send OFFER failed"); - } - break; - case DHCPREQUEST: - DEBUG(LOG_INFO, "received REQUEST"); - - requested = get_option(&packet, DHCP_REQUESTED_IP); - server_id = get_option(&packet, DHCP_SERVER_ID); - - if (requested) memcpy(&requested_align, requested, 4); - if (server_id) memcpy(&server_id_align, server_id, 4); - - if (lease) { - if (server_id) { - /* SELECTING State */ - DEBUG(LOG_INFO, "server_id = %08x", ntohl(server_id_align)); - if (server_id_align == server_config.server && requested && - requested_align == lease->yiaddr) { - sendACK(&packet, lease->yiaddr); - } - } else { - if (requested) { - /* INIT-REBOOT State */ - if (lease->yiaddr == requested_align) - sendACK(&packet, lease->yiaddr); - else sendNAK(&packet); - } else { - /* RENEWING or REBINDING State */ - if (lease->yiaddr == packet.ciaddr) - sendACK(&packet, lease->yiaddr); - else { - /* don't know what to do!!!! */ - sendNAK(&packet); - } - } - } - - /* what to do if we have no record of the client */ - } else if (server_id) { - /* SELECTING State */ - - } else if (requested) { - /* INIT-REBOOT State */ - if ((lease = find_lease_by_yiaddr(requested_align))) { - if (lease_expired(lease)) { - /* probably best if we drop this lease */ - memset(lease->chaddr, 0, 16); - /* make some contention for this address */ - } else sendNAK(&packet); - } else if (requested_align < server_config.start || - requested_align > server_config.end) { - sendNAK(&packet); - } /* else remain silent */ - - } else { - /* RENEWING or REBINDING State */ - } - break; - case DHCPDECLINE: - DEBUG(LOG_INFO,"received DECLINE"); - if (lease) { - memset(lease->chaddr, 0, 16); - lease->expires = time(0) + server_config.decline_time; - } - break; - case DHCPRELEASE: - DEBUG(LOG_INFO,"received RELEASE"); - if (lease) lease->expires = time(0); - break; - case DHCPINFORM: - DEBUG(LOG_INFO,"received INFORM"); - send_inform(&packet); - break; - default: - LOG(LOG_WARNING, "unsupported DHCP message (%02x) -- ignoring", state[0]); - } - } - - return 0; -} - diff --git a/udhcp/dhcpd.h b/udhcp/dhcpd.h deleted file mode 100644 index 65c8348..0000000 --- a/udhcp/dhcpd.h +++ /dev/null @@ -1,141 +0,0 @@ -/* dhcpd.h */ -#ifndef _DHCPD_H -#define _DHCPD_H - -#include -#include - -#include "libbb_udhcp.h" -#include "leases.h" -#include "version.h" - -/************************************/ -/* Defaults _you_ may want to tweak */ -/************************************/ - -/* the period of time the client is allowed to use that address */ -#define LEASE_TIME (60*60*24*10) /* 10 days of seconds */ -#define LEASES_FILE "/var/lib/misc/udhcpd.leases" - -/* where to find the DHCP server configuration file */ -#define DHCPD_CONF_FILE "/etc/udhcpd.conf" - -/*****************************************************************/ -/* Do not modify below here unless you know what you are doing!! */ -/*****************************************************************/ - -/* DHCP protocol -- see RFC 2131 */ -#define SERVER_PORT 67 -#define CLIENT_PORT 68 - -#define DHCP_MAGIC 0x63825363 - -/* DHCP option codes (partial list) */ -#define DHCP_PADDING 0x00 -#define DHCP_SUBNET 0x01 -#define DHCP_TIME_OFFSET 0x02 -#define DHCP_ROUTER 0x03 -#define DHCP_TIME_SERVER 0x04 -#define DHCP_NAME_SERVER 0x05 -#define DHCP_DNS_SERVER 0x06 -#define DHCP_LOG_SERVER 0x07 -#define DHCP_COOKIE_SERVER 0x08 -#define DHCP_LPR_SERVER 0x09 -#define DHCP_HOST_NAME 0x0c -#define DHCP_BOOT_SIZE 0x0d -#define DHCP_DOMAIN_NAME 0x0f -#define DHCP_SWAP_SERVER 0x10 -#define DHCP_ROOT_PATH 0x11 -#define DHCP_IP_TTL 0x17 -#define DHCP_MTU 0x1a -#define DHCP_BROADCAST 0x1c -#define DHCP_NTP_SERVER 0x2a -#define DHCP_WINS_SERVER 0x2c -#define DHCP_REQUESTED_IP 0x32 -#define DHCP_LEASE_TIME 0x33 -#define DHCP_OPTION_OVER 0x34 -#define DHCP_MESSAGE_TYPE 0x35 -#define DHCP_SERVER_ID 0x36 -#define DHCP_PARAM_REQ 0x37 -#define DHCP_MESSAGE 0x38 -#define DHCP_MAX_SIZE 0x39 -#define DHCP_T1 0x3a -#define DHCP_T2 0x3b -#define DHCP_VENDOR 0x3c -#define DHCP_CLIENT_ID 0x3d -#define DHCP_FQDN 0x51 - -#define DHCP_END 0xFF - - -#define BOOTREQUEST 1 -#define BOOTREPLY 2 - -#define ETH_10MB 1 -#define ETH_10MB_LEN 6 - -#define DHCPDISCOVER 1 -#define DHCPOFFER 2 -#define DHCPREQUEST 3 -#define DHCPDECLINE 4 -#define DHCPACK 5 -#define DHCPNAK 6 -#define DHCPRELEASE 7 -#define DHCPINFORM 8 - -#define BROADCAST_FLAG 0x8000 - -#define OPTION_FIELD 0 -#define FILE_FIELD 1 -#define SNAME_FIELD 2 - -/* miscellaneous defines */ -#define MAC_BCAST_ADDR (uint8_t *) "\xff\xff\xff\xff\xff\xff" -#define OPT_CODE 0 -#define OPT_LEN 1 -#define OPT_DATA 2 - -struct option_set { - uint8_t *data; - struct option_set *next; -}; - -struct static_lease { - uint8_t *mac; - uint32_t *ip; - struct static_lease *next; -}; - -struct server_config_t { - uint32_t server; /* Our IP, in network order */ - uint32_t start; /* Start address of leases, network order */ - uint32_t end; /* End of leases, network order */ - struct option_set *options; /* List of DHCP options loaded from the config file */ - char *interface; /* The name of the interface to use */ - int ifindex; /* Index number of the interface to use */ - uint8_t arp[6]; /* Our arp address */ - unsigned long lease; /* lease time in seconds (host order) */ - unsigned long max_leases; /* maximum number of leases (including reserved address) */ - char remaining; /* should the lease file be interpreted as lease time remaining, or - * as the time the lease expires */ - unsigned long auto_time; /* how long should udhcpd wait before writing a config file. - * if this is zero, it will only write one on SIGUSR1 */ - unsigned long decline_time; /* how long an address is reserved if a client returns a - * decline message */ - unsigned long conflict_time; /* how long an arp conflict offender is leased for */ - unsigned long offer_time; /* how long an offered address is reserved */ - unsigned long min_lease; /* minimum lease a client can request*/ - char *lease_file; - char *pidfile; - char *notify_file; /* What to run whenever leases are written */ - uint32_t siaddr; /* next server bootp option */ - char *sname; /* bootp server name */ - char *boot_file; /* bootp boot file option */ - struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */ -}; - -extern struct server_config_t server_config; -extern struct dhcpOfferedAddr *leases; - - -#endif diff --git a/udhcp/dumpleases.1 b/udhcp/dumpleases.1 deleted file mode 100644 index 04a04da..0000000 --- a/udhcp/dumpleases.1 +++ /dev/null @@ -1,30 +0,0 @@ -.TH DUMPLEASES 1 2001-09-27 GNU/Linux "GNU/Linux Administrator's Manual" -.SH NAME -dumpleases \- display leases granted by udhcp server -.SH SYNOPSIS -.B dumpleases -.RI [ OPTION ]... -.SH DESCRIPTION -Display the DHCP leases granted by -.BR udhcpd (8). -.SH OPTIONS -.TP -.BR \-a ,\ \-\-absolute -Interpret lease times as expiration time. -.TP -.BI \-f\ FILE,\ \-\-file= FILE -Read lease information from -.IR FILE . -.TP -.BR \-h ,\ \-\-help -Display help. -.TP -.BR \-r ,\ \-\-remaining -Interpret lease times as remaining time. -.SH FILES -.TP -.I /var/lib/misc/udhcpd.leases -Lease information file. -.SH SEE ALSO -.BR udhcpd (8), -.BR udhcpd.conf (5). diff --git a/udhcp/dumpleases.c b/udhcp/dumpleases.c deleted file mode 100644 index a9036df..0000000 --- a/udhcp/dumpleases.c +++ /dev/null @@ -1,110 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "dhcpd.h" -#include "leases.h" -#include "libbb_udhcp.h" - -#define REMAINING 0 -#define ABSOLUTE 1 - - -#ifndef IN_BUSYBOX -static void __attribute__ ((noreturn)) show_usage(void) -{ - printf( -"Usage: dumpleases -f -[r|a]\n\n" -" -f, --file=FILENAME Leases file to load\n" -" -r, --remaining Interepret lease times as time remaing\n" -" -a, --absolute Interepret lease times as expire time\n"); - exit(0); -} -#else -#define show_usage bb_show_usage -#endif - - -#ifdef IN_BUSYBOX -int dumpleases_main(int argc, char *argv[]) -#else -int main(int argc, char *argv[]) -#endif -{ - FILE *fp; - int i, c, mode = REMAINING; - long expires; - const char *file = LEASES_FILE; - struct dhcpOfferedAddr lease; - struct in_addr addr; - - static const struct option options[] = { - {"absolute", 0, 0, 'a'}, - {"remaining", 0, 0, 'r'}, - {"file", 1, 0, 'f'}, - {0, 0, 0, 0} - }; - - while (1) { - int option_index = 0; - c = getopt_long(argc, argv, "arf:", options, &option_index); - if (c == -1) break; - - switch (c) { - case 'a': mode = ABSOLUTE; break; - case 'r': mode = REMAINING; break; - case 'f': - file = optarg; - break; - default: - show_usage(); - } - } - - fp = xfopen(file, "r"); - - printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at"); - /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */ - while (fread(&lease, sizeof(lease), 1, fp)) { - - for (i = 0; i < 6; i++) { - printf("%02x", lease.chaddr[i]); - if (i != 5) printf(":"); - } - addr.s_addr = lease.yiaddr; - printf(" %-15s", inet_ntoa(addr)); - expires = ntohl(lease.expires); - printf(" "); - if (mode == REMAINING) { - if (!expires) printf("expired\n"); - else { - if (expires > 60*60*24) { - printf("%ld days, ", expires / (60*60*24)); - expires %= 60*60*24; - } - if (expires > 60*60) { - printf("%ld hours, ", expires / (60*60)); - expires %= 60*60; - } - if (expires > 60) { - printf("%ld minutes, ", expires / 60); - expires %= 60; - } - printf("%ld seconds\n", expires); - } - } else printf("%s", ctime(&expires)); - } - fclose(fp); - - return 0; -} diff --git a/udhcp/files.c b/udhcp/files.c deleted file mode 100644 index 73a3bbc..0000000 --- a/udhcp/files.c +++ /dev/null @@ -1,346 +0,0 @@ -/* - * files.c -- DHCP server file manipulation * - * Rewrite by Russ Dill July 2001 - */ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include "static_leases.h" - -#include "dhcpd.h" -#include "files.h" -#include "options.h" -#include "common.h" - -/* - * Domain names may have 254 chars, and string options can be 254 - * chars long. However, 80 bytes will be enough for most, and won't - * hog up memory. If you have a special application, change it - */ -#define READ_CONFIG_BUF_SIZE 80 - -/* on these functions, make sure you datatype matches */ -static int read_ip(const char *line, void *arg) -{ - struct in_addr *addr = arg; - struct hostent *host; - int retval = 1; - - if (!inet_aton(line, addr)) { - if ((host = gethostbyname(line))) - addr->s_addr = *((unsigned long *) host->h_addr_list[0]); - else retval = 0; - } - return retval; -} - -static int read_mac(const char *line, void *arg) -{ - uint8_t *mac_bytes = arg; - struct ether_addr *temp_ether_addr; - int retval = 1; - - temp_ether_addr = ether_aton(line); - - if(temp_ether_addr == NULL) - retval = 0; - else - memcpy(mac_bytes, temp_ether_addr, 6); - - return retval; -} - - -static int read_str(const char *line, void *arg) -{ - char **dest = arg; - - if (*dest) free(*dest); - *dest = strdup(line); - - return 1; -} - - -static int read_u32(const char *line, void *arg) -{ - uint32_t *dest = arg; - char *endptr; - *dest = strtoul(line, &endptr, 0); - return endptr[0] == '\0'; -} - - -static int read_yn(const char *line, void *arg) -{ - char *dest = arg; - int retval = 1; - - if (!strcasecmp("yes", line)) - *dest = 1; - else if (!strcasecmp("no", line)) - *dest = 0; - else retval = 0; - - return retval; -} - - -/* read a dhcp option and add it to opt_list */ -static int read_opt(const char *const_line, void *arg) -{ - struct option_set **opt_list = arg; - char *opt, *val, *endptr; - struct dhcp_option *option; - int retval = 0, length; - char buffer[8]; - char *line; - uint16_t *result_u16 = (uint16_t *) buffer; - uint32_t *result_u32 = (uint32_t *) buffer; - - /* Cheat, the only const line we'll actually get is "" */ - line = (char *) const_line; - if (!(opt = strtok(line, " \t="))) return 0; - - for (option = dhcp_options; option->code; option++) - if (!strcasecmp(option->name, opt)) - break; - - if (!option->code) return 0; - - do { - if (!(val = strtok(NULL, ", \t"))) break; - length = option_lengths[option->flags & TYPE_MASK]; - retval = 0; - opt = buffer; /* new meaning for variable opt */ - switch (option->flags & TYPE_MASK) { - case OPTION_IP: - retval = read_ip(val, buffer); - break; - case OPTION_IP_PAIR: - retval = read_ip(val, buffer); - if (!(val = strtok(NULL, ", \t/-"))) retval = 0; - if (retval) retval = read_ip(val, buffer + 4); - break; - case OPTION_STRING: - length = strlen(val); - if (length > 0) { - if (length > 254) length = 254; - opt = val; - retval = 1; - } - break; - case OPTION_BOOLEAN: - retval = read_yn(val, buffer); - break; - case OPTION_U8: - buffer[0] = strtoul(val, &endptr, 0); - retval = (endptr[0] == '\0'); - break; - case OPTION_U16: - *result_u16 = htons(strtoul(val, &endptr, 0)); - retval = (endptr[0] == '\0'); - break; - case OPTION_S16: - *result_u16 = htons(strtol(val, &endptr, 0)); - retval = (endptr[0] == '\0'); - break; - case OPTION_U32: - *result_u32 = htonl(strtoul(val, &endptr, 0)); - retval = (endptr[0] == '\0'); - break; - case OPTION_S32: - *result_u32 = htonl(strtol(val, &endptr, 0)); - retval = (endptr[0] == '\0'); - break; - default: - break; - } - if (retval) - attach_option(opt_list, option, opt, length); - } while (retval && option->flags & OPTION_LIST); - return retval; -} - -static int read_staticlease(const char *const_line, void *arg) -{ - - char *line; - char *mac_string; - char *ip_string; - uint8_t *mac_bytes; - uint32_t *ip; - - - /* Allocate memory for addresses */ - mac_bytes = xmalloc(sizeof(unsigned char) * 8); - ip = xmalloc(sizeof(uint32_t)); - - /* Read mac */ - line = (char *) const_line; - mac_string = strtok(line, " \t"); - read_mac(mac_string, mac_bytes); - - /* Read ip */ - ip_string = strtok(NULL, " \t"); - read_ip(ip_string, ip); - - addStaticLease(arg, mac_bytes, ip); - -#ifdef UDHCP_DEBUG - printStaticLeases(arg); -#endif - - return 1; - -} - - -static const struct config_keyword keywords[] = { - /* keyword handler variable address default */ - {"start", read_ip, &(server_config.start), "192.168.0.20"}, - {"end", read_ip, &(server_config.end), "192.168.0.254"}, - {"interface", read_str, &(server_config.interface), "eth0"}, - {"option", read_opt, &(server_config.options), ""}, - {"opt", read_opt, &(server_config.options), ""}, - {"max_leases", read_u32, &(server_config.max_leases), "254"}, - {"remaining", read_yn, &(server_config.remaining), "yes"}, - {"auto_time", read_u32, &(server_config.auto_time), "7200"}, - {"decline_time",read_u32, &(server_config.decline_time),"3600"}, - {"conflict_time",read_u32,&(server_config.conflict_time),"3600"}, - {"offer_time", read_u32, &(server_config.offer_time), "60"}, - {"min_lease", read_u32, &(server_config.min_lease), "60"}, - {"lease_file", read_str, &(server_config.lease_file), LEASES_FILE}, - {"pidfile", read_str, &(server_config.pidfile), "/var/run/udhcpd.pid"}, - {"notify_file", read_str, &(server_config.notify_file), ""}, - {"siaddr", read_ip, &(server_config.siaddr), "0.0.0.0"}, - {"sname", read_str, &(server_config.sname), ""}, - {"boot_file", read_str, &(server_config.boot_file), ""}, - {"static_lease",read_staticlease, &(server_config.static_leases), ""}, - /*ADDME: static lease */ - {"", NULL, NULL, ""} -}; - - -int read_config(const char *file) -{ - FILE *in; - char buffer[READ_CONFIG_BUF_SIZE], *token, *line; -#ifdef UDHCP_DEBUG - char orig[READ_CONFIG_BUF_SIZE]; -#endif - int i, lm = 0; - - for (i = 0; keywords[i].keyword[0]; i++) - if (keywords[i].def[0]) - keywords[i].handler(keywords[i].def, keywords[i].var); - - if (!(in = fopen(file, "r"))) { - LOG(LOG_ERR, "unable to open config file: %s", file); - return 0; - } - - while (fgets(buffer, READ_CONFIG_BUF_SIZE, in)) { - lm++; - if (strchr(buffer, '\n')) *(strchr(buffer, '\n')) = '\0'; -#ifdef UDHCP_DEBUG - strcpy(orig, buffer); -#endif - if (strchr(buffer, '#')) *(strchr(buffer, '#')) = '\0'; - - if (!(token = strtok(buffer, " \t"))) continue; - if (!(line = strtok(NULL, ""))) continue; - - /* eat leading whitespace */ - line = line + strspn(line, " \t="); - /* eat trailing whitespace */ - for (i = strlen(line); i > 0 && isspace(line[i - 1]); i--); - line[i] = '\0'; - - for (i = 0; keywords[i].keyword[0]; i++) - if (!strcasecmp(token, keywords[i].keyword)) - if (!keywords[i].handler(line, keywords[i].var)) { - LOG(LOG_ERR, "Failure parsing line %d of %s", lm, file); - DEBUG(LOG_ERR, "unable to parse '%s'", orig); - /* reset back to the default value */ - keywords[i].handler(keywords[i].def, keywords[i].var); - } - } - fclose(in); - return 1; -} - - -void write_leases(void) -{ - FILE *fp; - unsigned int i; - char buf[255]; - time_t curr = time(0); - unsigned long tmp_time; - - if (!(fp = fopen(server_config.lease_file, "w"))) { - LOG(LOG_ERR, "Unable to open %s for writing", server_config.lease_file); - return; - } - - for (i = 0; i < server_config.max_leases; i++) { - if (leases[i].yiaddr != 0) { - - /* screw with the time in the struct, for easier writing */ - tmp_time = leases[i].expires; - - if (server_config.remaining) { - if (lease_expired(&(leases[i]))) - leases[i].expires = 0; - else leases[i].expires -= curr; - } /* else stick with the time we got */ - leases[i].expires = htonl(leases[i].expires); - fwrite(&leases[i], sizeof(struct dhcpOfferedAddr), 1, fp); - - /* Then restore it when done. */ - leases[i].expires = tmp_time; - } - } - fclose(fp); - - if (server_config.notify_file) { - sprintf(buf, "%s %s", server_config.notify_file, server_config.lease_file); - system(buf); - } -} - - -void read_leases(const char *file) -{ - FILE *fp; - unsigned int i = 0; - struct dhcpOfferedAddr lease; - - if (!(fp = fopen(file, "r"))) { - LOG(LOG_ERR, "Unable to open %s for reading", file); - return; - } - - while (i < server_config.max_leases && (fread(&lease, sizeof lease, 1, fp) == 1)) { - /* ADDME: is it a static lease */ - if (lease.yiaddr >= server_config.start && lease.yiaddr <= server_config.end) { - lease.expires = ntohl(lease.expires); - if (!server_config.remaining) lease.expires -= time(0); - if (!(add_lease(lease.chaddr, lease.yiaddr, lease.expires))) { - LOG(LOG_WARNING, "Too many leases while loading %s\n", file); - break; - } - i++; - } - } - DEBUG(LOG_INFO, "Read %d leases", i); - fclose(fp); -} diff --git a/udhcp/files.h b/udhcp/files.h deleted file mode 100644 index 279738a..0000000 --- a/udhcp/files.h +++ /dev/null @@ -1,17 +0,0 @@ -/* files.h */ -#ifndef _FILES_H -#define _FILES_H - -struct config_keyword { - const char *keyword; - int (* const handler)(const char *line, void *var); - void *var; - const char *def; -}; - - -int read_config(const char *file); -void write_leases(void); -void read_leases(const char *file); - -#endif diff --git a/udhcp/frontend.c b/udhcp/frontend.c deleted file mode 100644 index fa77ab9..0000000 --- a/udhcp/frontend.c +++ /dev/null @@ -1,16 +0,0 @@ -#include - -extern int udhcpd_main(int argc, char *argv[]); -extern int udhcpc_main(int argc, char *argv[]); - -int main(int argc, char *argv[]) -{ - int ret = 0; - char *base = strrchr(argv[0], '/'); - - if (strstr(base ? (base + 1) : argv[0], "dhcpd")) - ret = udhcpd_main(argc, argv); - else ret = udhcpc_main(argc, argv); - - return ret; -} diff --git a/udhcp/leases.c b/udhcp/leases.c deleted file mode 100644 index 4da21a2..0000000 --- a/udhcp/leases.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * leases.c -- tools to manage DHCP leases - * Russ Dill July 2001 - */ - -#include -#include -#include -#include -#include - -#include "dhcpd.h" -#include "files.h" -#include "options.h" -#include "leases.h" -#include "arpping.h" -#include "common.h" - -#include "static_leases.h" - - -uint8_t blank_chaddr[] = {[0 ... 15] = 0}; - -/* clear every lease out that chaddr OR yiaddr matches and is nonzero */ -void clear_lease(uint8_t *chaddr, uint32_t yiaddr) -{ - unsigned int i, j; - - for (j = 0; j < 16 && !chaddr[j]; j++); - - for (i = 0; i < server_config.max_leases; i++) - if ((j != 16 && !memcmp(leases[i].chaddr, chaddr, 16)) || - (yiaddr && leases[i].yiaddr == yiaddr)) { - memset(&(leases[i]), 0, sizeof(struct dhcpOfferedAddr)); - } -} - - -/* add a lease into the table, clearing out any old ones */ -struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease) -{ - struct dhcpOfferedAddr *oldest; - - /* clean out any old ones */ - clear_lease(chaddr, yiaddr); - - oldest = oldest_expired_lease(); - - if (oldest) { - memcpy(oldest->chaddr, chaddr, 16); - oldest->yiaddr = yiaddr; - oldest->expires = time(0) + lease; - } - - return oldest; -} - - -/* true if a lease has expired */ -int lease_expired(struct dhcpOfferedAddr *lease) -{ - return (lease->expires < (unsigned long) time(0)); -} - - -/* Find the oldest expired lease, NULL if there are no expired leases */ -struct dhcpOfferedAddr *oldest_expired_lease(void) -{ - struct dhcpOfferedAddr *oldest = NULL; - unsigned long oldest_lease = time(0); - unsigned int i; - - - for (i = 0; i < server_config.max_leases; i++) - if (oldest_lease > leases[i].expires) { - oldest_lease = leases[i].expires; - oldest = &(leases[i]); - } - return oldest; - -} - - -/* Find the first lease that matches chaddr, NULL if no match */ -struct dhcpOfferedAddr *find_lease_by_chaddr(uint8_t *chaddr) -{ - unsigned int i; - - for (i = 0; i < server_config.max_leases; i++) - if (!memcmp(leases[i].chaddr, chaddr, 16)) return &(leases[i]); - - return NULL; -} - - -/* Find the first lease that matches yiaddr, NULL is no match */ -struct dhcpOfferedAddr *find_lease_by_yiaddr(uint32_t yiaddr) -{ - unsigned int i; - - for (i = 0; i < server_config.max_leases; i++) - if (leases[i].yiaddr == yiaddr) return &(leases[i]); - - return NULL; -} - - -/* check is an IP is taken, if it is, add it to the lease table */ -static int check_ip(uint32_t addr) -{ - struct in_addr temp; - - if (arpping(addr, server_config.server, server_config.arp, server_config.interface) == 0) { - temp.s_addr = addr; - LOG(LOG_INFO, "%s belongs to someone, reserving it for %ld seconds", - inet_ntoa(temp), server_config.conflict_time); - add_lease(blank_chaddr, addr, server_config.conflict_time); - return 1; - } else return 0; -} - - -/* find an assignable address, it check_expired is true, we check all the expired leases as well. - * Maybe this should try expired leases by age... */ -uint32_t find_address(int check_expired) -{ - uint32_t addr, ret; - struct dhcpOfferedAddr *lease = NULL; - - addr = ntohl(server_config.start); /* addr is in host order here */ - for (;addr <= ntohl(server_config.end); addr++) { - - /* ie, 192.168.55.0 */ - if (!(addr & 0xFF)) continue; - - /* ie, 192.168.55.255 */ - if ((addr & 0xFF) == 0xFF) continue; - - /* Only do if it isn't an assigned as a static lease */ - if(!reservedIp(server_config.static_leases, htonl(addr))) - { - - /* lease is not taken */ - ret = htonl(addr); - if ((!(lease = find_lease_by_yiaddr(ret)) || - - /* or it expired and we are checking for expired leases */ - (check_expired && lease_expired(lease))) && - - /* and it isn't on the network */ - !check_ip(ret)) { - return ret; - break; - } - } - } - return 0; -} diff --git a/udhcp/leases.h b/udhcp/leases.h deleted file mode 100644 index b13fa72..0000000 --- a/udhcp/leases.h +++ /dev/null @@ -1,23 +0,0 @@ -/* leases.h */ -#ifndef _LEASES_H -#define _LEASES_H - - -struct dhcpOfferedAddr { - uint8_t chaddr[16]; - uint32_t yiaddr; /* network order */ - uint32_t expires; /* host order */ -}; - -extern uint8_t blank_chaddr[]; - -void clear_lease(uint8_t *chaddr, uint32_t yiaddr); -struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease); -int lease_expired(struct dhcpOfferedAddr *lease); -struct dhcpOfferedAddr *oldest_expired_lease(void); -struct dhcpOfferedAddr *find_lease_by_chaddr(uint8_t *chaddr); -struct dhcpOfferedAddr *find_lease_by_yiaddr(uint32_t yiaddr); -uint32_t find_address(int check_expired); - - -#endif diff --git a/udhcp/libbb_udhcp.h b/udhcp/libbb_udhcp.h deleted file mode 100644 index 51e1571..0000000 --- a/udhcp/libbb_udhcp.h +++ /dev/null @@ -1,54 +0,0 @@ -/* libbb_udhcp.h - busybox compatability wrapper */ - -/* bit of a hack, do this no matter what the order of the includes. - * (for busybox) */ - -#ifdef CONFIG_INSTALL_NO_USR -#undef DEFAULT_SCRIPT -#define DEFAULT_SCRIPT "/share/udhcpc/default.script" -#endif - -#ifndef _LIBBB_UDHCP_H -#define _LIBBB_UDHCP_H - -#ifdef IN_BUSYBOX -#include "busybox.h" - -#ifdef CONFIG_FEATURE_UDHCP_SYSLOG -#define UDHCP_SYSLOG -#endif - -#ifdef CONFIG_FEATURE_UDHCP_DEBUG -#define UDHCP_DEBUG -#endif - -#define COMBINED_BINARY -#include "version.h" - -#define xfopen bb_xfopen - -#else /* ! BB_VER */ - -#include -#include -#include - -#define TRUE 1 -#define FALSE 0 - -#define xmalloc malloc -#define xcalloc calloc - -static inline FILE *xfopen(const char *file, const char *mode) -{ - FILE *fp; - if (!(fp = fopen(file, mode))) { - perror("could not open input file"); - exit(0); - } - return fp; -} - -#endif /* BB_VER */ - -#endif /* _LIBBB_UDHCP_H */ diff --git a/udhcp/options.c b/udhcp/options.c deleted file mode 100644 index d9c32a8..0000000 --- a/udhcp/options.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * options.c -- DHCP server option packet tools - * Rewrite by Russ Dill July 2001 - */ - -#include -#include - -#include "dhcpd.h" -#include "files.h" -#include "options.h" -#include "common.h" - - -/* supported options are easily added here */ -struct dhcp_option dhcp_options[] = { - /* name[10] flags code */ - {"subnet", OPTION_IP | OPTION_REQ, 0x01}, - {"timezone", OPTION_S32, 0x02}, - {"router", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x03}, - {"timesvr", OPTION_IP | OPTION_LIST, 0x04}, - {"namesvr", OPTION_IP | OPTION_LIST, 0x05}, - {"dns", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x06}, - {"logsvr", OPTION_IP | OPTION_LIST, 0x07}, - {"cookiesvr", OPTION_IP | OPTION_LIST, 0x08}, - {"lprsvr", OPTION_IP | OPTION_LIST, 0x09}, - {"hostname", OPTION_STRING | OPTION_REQ, 0x0c}, - {"bootsize", OPTION_U16, 0x0d}, - {"domain", OPTION_STRING | OPTION_REQ, 0x0f}, - {"swapsvr", OPTION_IP, 0x10}, - //We had the possibility for the client to ask for a rootpath - //closes http://bugs.debian.org/279110 (ericvb@debian.org) - //{"rootpath", OPTION_STRING, 0x11}, - {"rootpath", OPTION_STRING | OPTION_REQ, 0x11}, - {"ipttl", OPTION_U8, 0x17}, - {"mtu", OPTION_U16, 0x1a}, - {"broadcast", OPTION_IP | OPTION_REQ, 0x1c}, - {"nisdomain", OPTION_STRING | OPTION_REQ, 0x28}, - {"nissrv", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x29}, - {"ntpsrv", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x2a}, - {"wins", OPTION_IP | OPTION_LIST, 0x2c}, - {"requestip", OPTION_IP, 0x32}, - {"lease", OPTION_U32, 0x33}, - {"dhcptype", OPTION_U8, 0x35}, - {"serverid", OPTION_IP, 0x36}, - {"message", OPTION_STRING, 0x38}, - {"tftp", OPTION_STRING, 0x42}, - {"bootfile", OPTION_STRING, 0x43}, - {"wpad", OPTION_STRING, 0xfc}, - {"", 0x00, 0x00} -}; - -/* Lengths of the different option types */ -int option_lengths[] = { - [OPTION_IP] = 4, - [OPTION_IP_PAIR] = 8, - [OPTION_BOOLEAN] = 1, - [OPTION_STRING] = 1, - [OPTION_U8] = 1, - [OPTION_U16] = 2, - [OPTION_S16] = 2, - [OPTION_U32] = 4, - [OPTION_S32] = 4 -}; - - -/* get an option with bounds checking (warning, not aligned). */ -uint8_t *get_option(struct dhcpMessage *packet, int code) -{ - int i, length; - uint8_t *optionptr; - int over = 0, done = 0, curr = OPTION_FIELD; - - optionptr = packet->options; - i = 0; - length = 308; - while (!done) { - if (i >= length) { - LOG(LOG_WARNING, "bogus packet, option fields too long."); - return NULL; - } - if (optionptr[i + OPT_CODE] == code) { - if (i + 1 + optionptr[i + OPT_LEN] >= length) { - LOG(LOG_WARNING, "bogus packet, option fields too long."); - return NULL; - } - return optionptr + i + 2; - } - switch (optionptr[i + OPT_CODE]) { - case DHCP_PADDING: - i++; - break; - case DHCP_OPTION_OVER: - if (i + 1 + optionptr[i + OPT_LEN] >= length) { - LOG(LOG_WARNING, "bogus packet, option fields too long."); - return NULL; - } - over = optionptr[i + 3]; - i += optionptr[OPT_LEN] + 2; - break; - case DHCP_END: - if (curr == OPTION_FIELD && over & FILE_FIELD) { - optionptr = packet->file; - i = 0; - length = 128; - curr = FILE_FIELD; - } else if (curr == FILE_FIELD && over & SNAME_FIELD) { - optionptr = packet->sname; - i = 0; - length = 64; - curr = SNAME_FIELD; - } else done = 1; - break; - default: - i += optionptr[OPT_LEN + i] + 2; - } - } - return NULL; -} - - -/* return the position of the 'end' option (no bounds checking) */ -int end_option(uint8_t *optionptr) -{ - int i = 0; - - while (optionptr[i] != DHCP_END) { - if (optionptr[i] == DHCP_PADDING) i++; - else i += optionptr[i + OPT_LEN] + 2; - } - return i; -} - - -/* add an option string to the options (an option string contains an option code, - * length, then data) */ -int add_option_string(uint8_t *optionptr, uint8_t *string) -{ - int end = end_option(optionptr); - - /* end position + string length + option code/length + end option */ - if (end + string[OPT_LEN] + 2 + 1 >= 308) { - LOG(LOG_ERR, "Option 0x%02x did not fit into the packet!", string[OPT_CODE]); - return 0; - } - DEBUG(LOG_INFO, "adding option 0x%02x", string[OPT_CODE]); - memcpy(optionptr + end, string, string[OPT_LEN] + 2); - optionptr[end + string[OPT_LEN] + 2] = DHCP_END; - return string[OPT_LEN] + 2; -} - - -/* add a one to four byte option to a packet */ -int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) -{ - char length = 0; - int i; - uint8_t option[2 + 4]; - uint8_t *u8; - uint16_t *u16; - uint32_t *u32; - uint32_t aligned; - u8 = (uint8_t *) &aligned; - u16 = (uint16_t *) &aligned; - u32 = &aligned; - - for (i = 0; dhcp_options[i].code; i++) - if (dhcp_options[i].code == code) { - length = option_lengths[dhcp_options[i].flags & TYPE_MASK]; - } - - if (!length) { - DEBUG(LOG_ERR, "Could not add option 0x%02x", code); - return 0; - } - - option[OPT_CODE] = code; - option[OPT_LEN] = length; - - switch (length) { - case 1: *u8 = data; break; - case 2: *u16 = data; break; - case 4: *u32 = data; break; - } - memcpy(option + 2, &aligned, length); - return add_option_string(optionptr, option); -} - - -/* find option 'code' in opt_list */ -struct option_set *find_option(struct option_set *opt_list, char code) -{ - while (opt_list && opt_list->data[OPT_CODE] < code) - opt_list = opt_list->next; - - if (opt_list && opt_list->data[OPT_CODE] == code) return opt_list; - else return NULL; -} - - -/* add an option to the opt_list */ -void attach_option(struct option_set **opt_list, struct dhcp_option *option, char *buffer, int length) -{ - struct option_set *existing, *new, **curr; - - /* add it to an existing option */ - if ((existing = find_option(*opt_list, option->code))) { - DEBUG(LOG_INFO, "Attaching option %s to existing member of list", option->name); - if (option->flags & OPTION_LIST) { - if (existing->data[OPT_LEN] + length <= 255) { - existing->data = realloc(existing->data, - existing->data[OPT_LEN] + length + 2); - memcpy(existing->data + existing->data[OPT_LEN] + 2, buffer, length); - existing->data[OPT_LEN] += length; - } /* else, ignore the data, we could put this in a second option in the future */ - } /* else, ignore the new data */ - } else { - DEBUG(LOG_INFO, "Attaching option %s to list", option->name); - - /* make a new option */ - new = xmalloc(sizeof(struct option_set)); - new->data = xmalloc(length + 2); - new->data[OPT_CODE] = option->code; - new->data[OPT_LEN] = length; - memcpy(new->data + 2, buffer, length); - - curr = opt_list; - while (*curr && (*curr)->data[OPT_CODE] < option->code) - curr = &(*curr)->next; - - new->next = *curr; - *curr = new; - } -} diff --git a/udhcp/options.h b/udhcp/options.h deleted file mode 100644 index fbe54c8..0000000 --- a/udhcp/options.h +++ /dev/null @@ -1,40 +0,0 @@ -/* options.h */ -#ifndef _OPTIONS_H -#define _OPTIONS_H - -#include "packet.h" - -#define TYPE_MASK 0x0F - -enum { - OPTION_IP=1, - OPTION_IP_PAIR, - OPTION_STRING, - OPTION_BOOLEAN, - OPTION_U8, - OPTION_U16, - OPTION_S16, - OPTION_U32, - OPTION_S32 -}; - -#define OPTION_REQ 0x10 /* have the client request this option */ -#define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */ - -struct dhcp_option { - char name[10]; - char flags; - uint8_t code; -}; - -extern struct dhcp_option dhcp_options[]; -extern int option_lengths[]; - -uint8_t *get_option(struct dhcpMessage *packet, int code); -int end_option(uint8_t *optionptr); -int add_option_string(uint8_t *optionptr, uint8_t *string); -int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data); -struct option_set *find_option(struct option_set *opt_list, char code); -void attach_option(struct option_set **opt_list, struct dhcp_option *option, char *buffer, int length); - -#endif diff --git a/udhcp/packet.c b/udhcp/packet.c deleted file mode 100644 index 7774291..0000000 --- a/udhcp/packet.c +++ /dev/null @@ -1,211 +0,0 @@ -#include -#include -#include -#include -#include -#include -#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1 -#include -#include -#else -#include -#include -#include -#endif -#include - -#include "packet.h" -#include "dhcpd.h" -#include "options.h" -#include "common.h" - - -void init_header(struct dhcpMessage *packet, char type) -{ - memset(packet, 0, sizeof(struct dhcpMessage)); - switch (type) { - case DHCPDISCOVER: - case DHCPREQUEST: - case DHCPRELEASE: - case DHCPINFORM: - packet->op = BOOTREQUEST; - break; - case DHCPOFFER: - case DHCPACK: - case DHCPNAK: - packet->op = BOOTREPLY; - } - packet->htype = ETH_10MB; - packet->hlen = ETH_10MB_LEN; - packet->cookie = htonl(DHCP_MAGIC); - packet->options[0] = DHCP_END; - add_simple_option(packet->options, DHCP_MESSAGE_TYPE, type); -} - - -/* read a packet from socket fd, return -1 on read error, -2 on packet error */ -int get_packet(struct dhcpMessage *packet, int fd) -{ - int bytes; - int i; - const char broken_vendors[][8] = { - "MSFT 98", - "" - }; - char unsigned *vendor; - - memset(packet, 0, sizeof(struct dhcpMessage)); - bytes = read(fd, packet, sizeof(struct dhcpMessage)); - if (bytes < 0) { - DEBUG(LOG_INFO, "couldn't read on listening socket, ignoring"); - return -1; - } - - if (ntohl(packet->cookie) != DHCP_MAGIC) { - LOG(LOG_ERR, "received bogus message, ignoring"); - return -2; - } - DEBUG(LOG_INFO, "Received a packet"); - - if (packet->op == BOOTREQUEST && (vendor = get_option(packet, DHCP_VENDOR))) { - for (i = 0; broken_vendors[i][0]; i++) { - if (vendor[OPT_LEN - 2] == (uint8_t) strlen(broken_vendors[i]) && - !strncmp(vendor, broken_vendors[i], vendor[OPT_LEN - 2])) { - DEBUG(LOG_INFO, "broken client (%s), forcing broadcast", - broken_vendors[i]); - packet->flags |= htons(BROADCAST_FLAG); - } - } - } - - - return bytes; -} - - -uint16_t checksum(void *addr, int count) -{ - /* Compute Internet Checksum for "count" bytes - * beginning at location "addr". - */ - register int32_t sum = 0; - uint16_t *source = (uint16_t *) addr; - - while (count > 1) { - /* This is the inner loop */ - sum += *source++; - count -= 2; - } - - /* Add left-over byte, if any */ - if (count > 0) { - /* Make sure that the left-over byte is added correctly both - * with little and big endian hosts */ - uint16_t tmp = 0; - *(uint8_t *) (&tmp) = * (uint8_t *) source; - sum += tmp; - } - /* Fold 32-bit sum to 16 bits */ - while (sum >> 16) - sum = (sum & 0xffff) + (sum >> 16); - - return ~sum; -} - - -/* Construct a ip/udp header for a packet, and specify the source and dest hardware address */ -int raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex) -{ - int fd; - int result; - struct sockaddr_ll dest; - struct udp_dhcp_packet packet; - - if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) { - DEBUG(LOG_ERR, "socket call failed: %m"); - return -1; - } - - memset(&dest, 0, sizeof(dest)); - memset(&packet, 0, sizeof(packet)); - - dest.sll_family = AF_PACKET; - dest.sll_protocol = htons(ETH_P_IP); - dest.sll_ifindex = ifindex; - dest.sll_halen = 6; - memcpy(dest.sll_addr, dest_arp, 6); - if (bind(fd, (struct sockaddr *)&dest, sizeof(struct sockaddr_ll)) < 0) { - DEBUG(LOG_ERR, "bind call failed: %m"); - close(fd); - return -1; - } - - packet.ip.protocol = IPPROTO_UDP; - packet.ip.saddr = source_ip; - packet.ip.daddr = dest_ip; - packet.udp.source = htons(source_port); - packet.udp.dest = htons(dest_port); - packet.udp.len = htons(sizeof(packet.udp) + sizeof(struct dhcpMessage)); /* cheat on the psuedo-header */ - packet.ip.tot_len = packet.udp.len; - memcpy(&(packet.data), payload, sizeof(struct dhcpMessage)); - packet.udp.check = checksum(&packet, sizeof(struct udp_dhcp_packet)); - - packet.ip.tot_len = htons(sizeof(struct udp_dhcp_packet)); - packet.ip.ihl = sizeof(packet.ip) >> 2; - packet.ip.version = IPVERSION; - packet.ip.ttl = IPDEFTTL; - packet.ip.check = checksum(&(packet.ip), sizeof(packet.ip)); - - result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0, (struct sockaddr *) &dest, sizeof(dest)); - if (result <= 0) { - DEBUG(LOG_ERR, "write on socket failed: %m"); - } - close(fd); - return result; -} - - -/* Let the kernel do all the work for packet generation */ -int kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port) -{ - int n = 1; - int fd, result; - struct sockaddr_in client; - - if ((fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) - return -1; - - if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &n, sizeof(n)) == -1) - { - close(fd); - return -1; - } - - memset(&client, 0, sizeof(client)); - client.sin_family = AF_INET; - client.sin_port = htons(source_port); - client.sin_addr.s_addr = source_ip; - - if (bind(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) - { - close(fd); - return -1; - } - - memset(&client, 0, sizeof(client)); - client.sin_family = AF_INET; - client.sin_port = htons(dest_port); - client.sin_addr.s_addr = dest_ip; - - if (connect(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) - { - close(fd); - return -1; - } - - result = write(fd, payload, sizeof(struct dhcpMessage)); - close(fd); - return result; -} diff --git a/udhcp/packet.h b/udhcp/packet.h deleted file mode 100644 index f5859e8..0000000 --- a/udhcp/packet.h +++ /dev/null @@ -1,41 +0,0 @@ -#ifndef _PACKET_H -#define _PACKET_H - -#include -#include - -struct dhcpMessage { - uint8_t op; - uint8_t htype; - uint8_t hlen; - uint8_t hops; - uint32_t xid; - uint16_t secs; - uint16_t flags; - uint32_t ciaddr; - uint32_t yiaddr; - uint32_t siaddr; - uint32_t giaddr; - uint8_t chaddr[16]; - uint8_t sname[64]; - uint8_t file[128]; - uint32_t cookie; - uint8_t options[308]; /* 312 - cookie */ -}; - -struct udp_dhcp_packet { - struct iphdr ip; - struct udphdr udp; - struct dhcpMessage data; -}; - -void init_header(struct dhcpMessage *packet, char type); -int get_packet(struct dhcpMessage *packet, int fd); -uint16_t checksum(void *addr, int count); -int raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex); -int kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port); - - -#endif diff --git a/udhcp/pidfile.c b/udhcp/pidfile.c deleted file mode 100644 index 2e0c753..0000000 --- a/udhcp/pidfile.c +++ /dev/null @@ -1,75 +0,0 @@ -/* pidfile.c - * - * Functions to assist in the writing and removing of pidfiles. - * - * Russ Dill September 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include - -#include "pidfile.h" -#include "common.h" - -static char *saved_pidfile; - -static void pidfile_delete(void) -{ - if (saved_pidfile) unlink(saved_pidfile); -} - - -int pidfile_acquire(const char *pidfile) -{ - int pid_fd; - if (!pidfile) return -1; - - pid_fd = open(pidfile, O_CREAT | O_WRONLY, 0644); - if (pid_fd < 0) { - LOG(LOG_ERR, "Unable to open pidfile %s: %m\n", pidfile); - } else { - lockf(pid_fd, F_LOCK, 0); - if (!saved_pidfile) - atexit(pidfile_delete); - saved_pidfile = (char *) pidfile; - } - - return pid_fd; -} - - -void pidfile_write_release(int pid_fd) -{ - FILE *out; - - if (pid_fd < 0) return; - - if ((out = fdopen(pid_fd, "w")) != NULL) { - fprintf(out, "%d\n", getpid()); - fclose(out); - } - lockf(pid_fd, F_UNLCK, 0); - close(pid_fd); -} - - - - diff --git a/udhcp/pidfile.h b/udhcp/pidfile.h deleted file mode 100644 index ea97d1d..0000000 --- a/udhcp/pidfile.h +++ /dev/null @@ -1,25 +0,0 @@ -/* pidfile.h - * - * Functions to assist in the writing and removing of pidfiles. - * - * Russ Dill September 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -int pidfile_acquire(const char *pidfile); -void pidfile_write_release(int pid_fd); - diff --git a/udhcp/script.c b/udhcp/script.c deleted file mode 100644 index 820fbb0..0000000 --- a/udhcp/script.c +++ /dev/null @@ -1,233 +0,0 @@ -/* script.c - * - * Functions to call the DHCP client notification scripts - * - * Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "options.h" -#include "dhcpd.h" -#include "dhcpc.h" -#include "common.h" - -/* get a rough idea of how long an option will be (rounding up...) */ -static const int max_option_length[] = { - [OPTION_IP] = sizeof("255.255.255.255 "), - [OPTION_IP_PAIR] = sizeof("255.255.255.255 ") * 2, - [OPTION_STRING] = 1, - [OPTION_BOOLEAN] = sizeof("yes "), - [OPTION_U8] = sizeof("255 "), - [OPTION_U16] = sizeof("65535 "), - [OPTION_S16] = sizeof("-32768 "), - [OPTION_U32] = sizeof("4294967295 "), - [OPTION_S32] = sizeof("-2147483684 "), -}; - - -static inline int upper_length(int length, int opt_index) -{ - return max_option_length[opt_index] * - (length / option_lengths[opt_index]); -} - - -static int sprintip(char *dest, char *pre, uint8_t *ip) -{ - return sprintf(dest, "%s%d.%d.%d.%d", pre, ip[0], ip[1], ip[2], ip[3]); -} - - -/* really simple implementation, just count the bits */ -static int mton(struct in_addr *mask) -{ - int i; - unsigned long bits = ntohl(mask->s_addr); - /* too bad one can't check the carry bit, etc in c bit - * shifting */ - for (i = 0; i < 32 && !((bits >> i) & 1); i++); - return 32 - i; -} - - -/* Fill dest with the text of option 'option'. */ -static void fill_options(char *dest, uint8_t *option, struct dhcp_option *type_p) -{ - int type, optlen; - uint16_t val_u16; - int16_t val_s16; - uint32_t val_u32; - int32_t val_s32; - int len = option[OPT_LEN - 2]; - - dest += sprintf(dest, "%s=", type_p->name); - - type = type_p->flags & TYPE_MASK; - optlen = option_lengths[type]; - for(;;) { - switch (type) { - case OPTION_IP_PAIR: - dest += sprintip(dest, "", option); - *(dest++) = '/'; - option += 4; - optlen = 4; - case OPTION_IP: /* Works regardless of host byte order. */ - dest += sprintip(dest, "", option); - break; - case OPTION_BOOLEAN: - dest += sprintf(dest, *option ? "yes" : "no"); - break; - case OPTION_U8: - dest += sprintf(dest, "%u", *option); - break; - case OPTION_U16: - memcpy(&val_u16, option, 2); - dest += sprintf(dest, "%u", ntohs(val_u16)); - break; - case OPTION_S16: - memcpy(&val_s16, option, 2); - dest += sprintf(dest, "%d", ntohs(val_s16)); - break; - case OPTION_U32: - memcpy(&val_u32, option, 4); - dest += sprintf(dest, "%lu", (unsigned long) ntohl(val_u32)); - break; - case OPTION_S32: - memcpy(&val_s32, option, 4); - dest += sprintf(dest, "%ld", (long) ntohl(val_s32)); - break; - case OPTION_STRING: - memcpy(dest, option, len); - dest[len] = '\0'; - return; /* Short circuit this case */ - } - option += optlen; - len -= optlen; - if (len <= 0) break; - dest += sprintf(dest, " "); - } -} - - -/* put all the parameters into an environment */ -static char **fill_envp(struct dhcpMessage *packet) -{ - int num_options = 0; - int i, j; - char **envp; - uint8_t *temp; - struct in_addr subnet; - char over = 0; - - if (packet == NULL) - num_options = 0; - else { - for (i = 0; dhcp_options[i].code; i++) - if (get_option(packet, dhcp_options[i].code)) { - num_options++; - if (dhcp_options[i].code == DHCP_SUBNET) - num_options++; /* for mton */ - } - if (packet->siaddr) num_options++; - if ((temp = get_option(packet, DHCP_OPTION_OVER))) - over = *temp; - if (!(over & FILE_FIELD) && packet->file[0]) num_options++; - if (!(over & SNAME_FIELD) && packet->sname[0]) num_options++; - } - - envp = xcalloc(sizeof(char *), num_options + 5); - j = 0; - asprintf(&envp[j++], "interface=%s", client_config.interface); - asprintf(&envp[j++], "%s=%s", "PATH", - getenv("PATH") ? : "/bin:/usr/bin:/sbin:/usr/sbin"); - asprintf(&envp[j++], "%s=%s", "HOME", getenv("HOME") ? : "/"); - - if (packet == NULL) return envp; - - envp[j] = xmalloc(sizeof("ip=255.255.255.255")); - sprintip(envp[j++], "ip=", (uint8_t *) &packet->yiaddr); - - - for (i = 0; dhcp_options[i].code; i++) { - if (!(temp = get_option(packet, dhcp_options[i].code))) - continue; - envp[j] = xmalloc(upper_length(temp[OPT_LEN - 2], - dhcp_options[i].flags & TYPE_MASK) + strlen(dhcp_options[i].name) + 2); - fill_options(envp[j++], temp, &dhcp_options[i]); - - /* Fill in a subnet bits option for things like /24 */ - if (dhcp_options[i].code == DHCP_SUBNET) { - memcpy(&subnet, temp, 4); - asprintf(&envp[j++], "mask=%d", mton(&subnet)); - } - } - if (packet->siaddr) { - envp[j] = xmalloc(sizeof("siaddr=255.255.255.255")); - sprintip(envp[j++], "siaddr=", (uint8_t *) &packet->siaddr); - } - if (!(over & FILE_FIELD) && packet->file[0]) { - /* watch out for invalid packets */ - packet->file[sizeof(packet->file) - 1] = '\0'; - asprintf(&envp[j++], "boot_file=%s", packet->file); - } - if (!(over & SNAME_FIELD) && packet->sname[0]) { - /* watch out for invalid packets */ - packet->sname[sizeof(packet->sname) - 1] = '\0'; - asprintf(&envp[j++], "sname=%s", packet->sname); - } - return envp; -} - - -/* Call a script with a par file and env vars */ -void run_script(struct dhcpMessage *packet, const char *name) -{ - int pid; - char **envp, **curr; - - if (client_config.script == NULL) - return; - - DEBUG(LOG_INFO, "vforking and execle'ing %s", client_config.script); - - envp = fill_envp(packet); - /* call script */ - pid = vfork(); - if (pid) { - waitpid(pid, NULL, 0); - for (curr = envp; *curr; curr++) free(*curr); - free(envp); - return; - } else if (pid == 0) { - /* close fd's? */ - - /* exec script */ - execle(client_config.script, client_config.script, - name, NULL, envp); - LOG(LOG_ERR, "script %s failed: %m", client_config.script); - exit(1); - } -} diff --git a/udhcp/script.h b/udhcp/script.h deleted file mode 100644 index 87a20cc..0000000 --- a/udhcp/script.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _SCRIPT_H -#define _SCRIPT_H - -void run_script(struct dhcpMessage *packet, const char *name); - -#endif diff --git a/udhcp/serverpacket.c b/udhcp/serverpacket.c deleted file mode 100644 index 75d55bd..0000000 --- a/udhcp/serverpacket.c +++ /dev/null @@ -1,275 +0,0 @@ -/* serverpacket.c - * - * Construct and send DHCP server packets - * - * Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include - -#include "serverpacket.h" -#include "dhcpd.h" -#include "options.h" -#include "common.h" -#include "static_leases.h" - -/* send a packet to giaddr using the kernel ip stack */ -static int send_packet_to_relay(struct dhcpMessage *payload) -{ - DEBUG(LOG_INFO, "Forwarding packet to relay"); - - return kernel_packet(payload, server_config.server, SERVER_PORT, - payload->giaddr, SERVER_PORT); -} - - -/* send a packet to a specific arp address and ip address by creating our own ip packet */ -static int send_packet_to_client(struct dhcpMessage *payload, int force_broadcast) -{ - uint8_t *chaddr; - uint32_t ciaddr; - - if (force_broadcast) { - DEBUG(LOG_INFO, "broadcasting packet to client (NAK)"); - ciaddr = INADDR_BROADCAST; - chaddr = MAC_BCAST_ADDR; - } else if (payload->ciaddr) { - DEBUG(LOG_INFO, "unicasting packet to client ciaddr"); - ciaddr = payload->ciaddr; - chaddr = payload->chaddr; - } else if (ntohs(payload->flags) & BROADCAST_FLAG) { - DEBUG(LOG_INFO, "broadcasting packet to client (requested)"); - ciaddr = INADDR_BROADCAST; - chaddr = MAC_BCAST_ADDR; - } else { - DEBUG(LOG_INFO, "unicasting packet to client yiaddr"); - ciaddr = payload->yiaddr; - chaddr = payload->chaddr; - } - return raw_packet(payload, server_config.server, SERVER_PORT, - ciaddr, CLIENT_PORT, chaddr, server_config.ifindex); -} - - -/* send a dhcp packet, if force broadcast is set, the packet will be broadcast to the client */ -static int send_packet(struct dhcpMessage *payload, int force_broadcast) -{ - int ret; - - if (payload->giaddr) - ret = send_packet_to_relay(payload); - else ret = send_packet_to_client(payload, force_broadcast); - return ret; -} - - -static void init_packet(struct dhcpMessage *packet, struct dhcpMessage *oldpacket, char type) -{ - init_header(packet, type); - packet->xid = oldpacket->xid; - memcpy(packet->chaddr, oldpacket->chaddr, 16); - packet->flags = oldpacket->flags; - packet->giaddr = oldpacket->giaddr; - packet->ciaddr = oldpacket->ciaddr; - add_simple_option(packet->options, DHCP_SERVER_ID, server_config.server); -} - - -/* add in the bootp options */ -static void add_bootp_options(struct dhcpMessage *packet) -{ - packet->siaddr = server_config.siaddr; - if (server_config.sname) - strncpy(packet->sname, server_config.sname, sizeof(packet->sname) - 1); - if (server_config.boot_file) - strncpy(packet->file, server_config.boot_file, sizeof(packet->file) - 1); -} - - -/* send a DHCP OFFER to a DHCP DISCOVER */ -int sendOffer(struct dhcpMessage *oldpacket) -{ - struct dhcpMessage packet; - struct dhcpOfferedAddr *lease = NULL; - uint32_t req_align, lease_time_align = server_config.lease; - uint8_t *req, *lease_time; - struct option_set *curr; - struct in_addr addr; - - uint32_t static_lease_ip; - - init_packet(&packet, oldpacket, DHCPOFFER); - - static_lease_ip = getIpByMac(server_config.static_leases, oldpacket->chaddr); - - /* ADDME: if static, short circuit */ - if(!static_lease_ip) - { - /* the client is in our lease/offered table */ - if ((lease = find_lease_by_chaddr(oldpacket->chaddr))) { - if (!lease_expired(lease)) - lease_time_align = lease->expires - time(0); - packet.yiaddr = lease->yiaddr; - - /* Or the client has a requested ip */ - } else if ((req = get_option(oldpacket, DHCP_REQUESTED_IP)) && - - /* Don't look here (ugly hackish thing to do) */ - memcpy(&req_align, req, 4) && - - /* and the ip is in the lease range */ - ntohl(req_align) >= ntohl(server_config.start) && - ntohl(req_align) <= ntohl(server_config.end) && - - !static_lease_ip && /* Check that its not a static lease */ - /* and is not already taken/offered */ - ((!(lease = find_lease_by_yiaddr(req_align)) || - - /* or its taken, but expired */ /* ADDME: or maybe in here */ - lease_expired(lease)))) { - packet.yiaddr = req_align; /* FIXME: oh my, is there a host using this IP? */ - - /* otherwise, find a free IP */ - } else { - /* Is it a static lease? (No, because find_address skips static lease) */ - packet.yiaddr = find_address(0); - - /* try for an expired lease */ - if (!packet.yiaddr) packet.yiaddr = find_address(1); - } - - if(!packet.yiaddr) { - LOG(LOG_WARNING, "no IP addresses to give -- OFFER abandoned"); - return -1; - } - - if (!add_lease(packet.chaddr, packet.yiaddr, server_config.offer_time)) { - LOG(LOG_WARNING, "lease pool is full -- OFFER abandoned"); - return -1; - } - - if ((lease_time = get_option(oldpacket, DHCP_LEASE_TIME))) { - memcpy(&lease_time_align, lease_time, 4); - lease_time_align = ntohl(lease_time_align); - if (lease_time_align > server_config.lease) - lease_time_align = server_config.lease; - } - - /* Make sure we aren't just using the lease time from the previous offer */ - if (lease_time_align < server_config.min_lease) - lease_time_align = server_config.lease; - } - /* ADDME: end of short circuit */ - else - { - /* It is a static lease... use it */ - packet.yiaddr = static_lease_ip; - } - - add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_align)); - - curr = server_config.options; - while (curr) { - if (curr->data[OPT_CODE] != DHCP_LEASE_TIME) - add_option_string(packet.options, curr->data); - curr = curr->next; - } - - add_bootp_options(&packet); - - addr.s_addr = packet.yiaddr; - LOG(LOG_INFO, "sending OFFER of %s", inet_ntoa(addr)); - return send_packet(&packet, 0); -} - - -int sendNAK(struct dhcpMessage *oldpacket) -{ - struct dhcpMessage packet; - - init_packet(&packet, oldpacket, DHCPNAK); - - DEBUG(LOG_INFO, "sending NAK"); - return send_packet(&packet, 1); -} - - -int sendACK(struct dhcpMessage *oldpacket, uint32_t yiaddr) -{ - struct dhcpMessage packet; - struct option_set *curr; - uint8_t *lease_time; - uint32_t lease_time_align = server_config.lease; - struct in_addr addr; - - init_packet(&packet, oldpacket, DHCPACK); - packet.yiaddr = yiaddr; - - if ((lease_time = get_option(oldpacket, DHCP_LEASE_TIME))) { - memcpy(&lease_time_align, lease_time, 4); - lease_time_align = ntohl(lease_time_align); - if (lease_time_align > server_config.lease) - lease_time_align = server_config.lease; - else if (lease_time_align < server_config.min_lease) - lease_time_align = server_config.lease; - } - - add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_align)); - - curr = server_config.options; - while (curr) { - if (curr->data[OPT_CODE] != DHCP_LEASE_TIME) - add_option_string(packet.options, curr->data); - curr = curr->next; - } - - add_bootp_options(&packet); - - addr.s_addr = packet.yiaddr; - LOG(LOG_INFO, "sending ACK to %s", inet_ntoa(addr)); - - if (send_packet(&packet, 0) < 0) - return -1; - - add_lease(packet.chaddr, packet.yiaddr, lease_time_align); - - return 0; -} - - -int send_inform(struct dhcpMessage *oldpacket) -{ - struct dhcpMessage packet; - struct option_set *curr; - - init_packet(&packet, oldpacket, DHCPACK); - - curr = server_config.options; - while (curr) { - if (curr->data[OPT_CODE] != DHCP_LEASE_TIME) - add_option_string(packet.options, curr->data); - curr = curr->next; - } - - add_bootp_options(&packet); - - return send_packet(&packet, 0); -} diff --git a/udhcp/serverpacket.h b/udhcp/serverpacket.h deleted file mode 100644 index 9024928..0000000 --- a/udhcp/serverpacket.h +++ /dev/null @@ -1,12 +0,0 @@ -#ifndef _SERVERPACKET_H -#define _SERVERPACKET_H - -#include "packet.h" - -int sendOffer(struct dhcpMessage *oldpacket); -int sendNAK(struct dhcpMessage *oldpacket); -int sendACK(struct dhcpMessage *oldpacket, uint32_t yiaddr); -int send_inform(struct dhcpMessage *oldpacket); - - -#endif diff --git a/udhcp/signalpipe.c b/udhcp/signalpipe.c deleted file mode 100644 index 074c8a6..0000000 --- a/udhcp/signalpipe.c +++ /dev/null @@ -1,78 +0,0 @@ -/* signalpipe.c - * - * Signal pipe infrastructure. A reliable way of delivering signals. - * - * Russ Dill December 2003 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include - - -#include "signalpipe.h" -#include "common.h" - -static int signal_pipe[2]; - -static void signal_handler(int sig) -{ - if (send(signal_pipe[1], &sig, sizeof(sig), MSG_DONTWAIT) < 0) - DEBUG(LOG_ERR, "Could not send signal: %m"); -} - - -/* Call this before doing anything else. Sets up the socket pair - * and installs the signal handler */ -void udhcp_sp_setup(void) -{ - socketpair(AF_UNIX, SOCK_STREAM, 0, signal_pipe); - signal(SIGUSR1, signal_handler); - signal(SIGUSR2, signal_handler); - signal(SIGTERM, signal_handler); -} - - -/* Quick little function to setup the rfds. Will return the - * max_fd for use with select. Limited in that you can only pass - * one extra fd */ -int udhcp_sp_fd_set(fd_set *rfds, int extra_fd) -{ - FD_ZERO(rfds); - FD_SET(signal_pipe[0], rfds); - if (extra_fd >= 0) FD_SET(extra_fd, rfds); - return signal_pipe[0] > extra_fd ? signal_pipe[0] : extra_fd; -} - - -/* Read a signal from the signal pipe. Returns 0 if there is - * no signal, -1 on error (and sets errno appropriately), and - * your signal on success */ -int udhcp_sp_read(fd_set *rfds) -{ - int sig; - - if (!FD_ISSET(signal_pipe[0], rfds)) - return 0; - - if (read(signal_pipe[0], &sig, sizeof(sig)) < 0) - return -1; - - return sig; -} diff --git a/udhcp/signalpipe.h b/udhcp/signalpipe.h deleted file mode 100644 index 70c1e57..0000000 --- a/udhcp/signalpipe.h +++ /dev/null @@ -1,22 +0,0 @@ -/* signalpipe.h - * - * Russ Dill December 2003 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -void udhcp_sp_setup(void); -int udhcp_sp_fd_set(fd_set *rfds, int extra_fd); -int udhcp_sp_read(fd_set *rfds); diff --git a/udhcp/socket.c b/udhcp/socket.c deleted file mode 100644 index 7529250..0000000 --- a/udhcp/socket.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * socket.c -- DHCP server client/server socket creation - * - * udhcp client/server - * Copyright (C) 1999 Matthew Ramsay - * Chris Trew - * - * Rewrite by Russ Dill July 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1 -#include -#include -#else -#include -#include -#include -#endif - -#include "socket.h" -#include "common.h" - -int read_interface(char *interface, int *ifindex, uint32_t *addr, uint8_t *arp) -{ - int fd; - struct ifreq ifr; - struct sockaddr_in *our_ip; - - memset(&ifr, 0, sizeof(struct ifreq)); - if((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) >= 0) { - ifr.ifr_addr.sa_family = AF_INET; - //closes http://bugs.debian.org/283582 - //strcpy(ifr.ifr_name, interface); - strncpy(ifr.ifr_name, interface, IFNAMSIZ-1); - - if (addr) { - if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) { - our_ip = (struct sockaddr_in *) &ifr.ifr_addr; - *addr = our_ip->sin_addr.s_addr; - DEBUG(LOG_INFO, "%s (our ip) = %s", ifr.ifr_name, inet_ntoa(our_ip->sin_addr)); - } else { - LOG(LOG_ERR, "SIOCGIFADDR failed, is the interface up and configured?: %m"); - close(fd); - return -1; - } - } - - if (ioctl(fd, SIOCGIFINDEX, &ifr) == 0) { - DEBUG(LOG_INFO, "adapter index %d", ifr.ifr_ifindex); - *ifindex = ifr.ifr_ifindex; - } else { - LOG(LOG_ERR, "SIOCGIFINDEX failed!: %m"); - close(fd); - return -1; - } - if (ioctl(fd, SIOCGIFHWADDR, &ifr) == 0) { - memcpy(arp, ifr.ifr_hwaddr.sa_data, 6); - DEBUG(LOG_INFO, "adapter hardware address %02x:%02x:%02x:%02x:%02x:%02x", - arp[0], arp[1], arp[2], arp[3], arp[4], arp[5]); - } else { - LOG(LOG_ERR, "SIOCGIFHWADDR failed!: %m"); - close(fd); - return -1; - } - } else { - LOG(LOG_ERR, "socket failed!: %m"); - return -1; - } - close(fd); - return 0; -} - - -int listen_socket(uint32_t ip, int port, char *inf) -{ - struct ifreq interface; - int fd; - struct sockaddr_in addr; - int n = 1; - - DEBUG(LOG_INFO, "Opening listen socket on 0x%08x:%d %s", ip, port, inf); - if ((fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) { - DEBUG(LOG_ERR, "socket call failed: %m"); - return -1; - } - - memset(&addr, 0, sizeof(addr)); - addr.sin_family = AF_INET; - addr.sin_port = htons(port); - addr.sin_addr.s_addr = ip; - - if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &n, sizeof(n)) == -1) { - close(fd); - return -1; - } - if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, (char *) &n, sizeof(n)) == -1) { - close(fd); - return -1; - } - - strncpy(interface.ifr_ifrn.ifrn_name, inf, IFNAMSIZ); - if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE,(char *)&interface, sizeof(interface)) < 0) { - close(fd); - return -1; - } - - if (bind(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr)) == -1) { - close(fd); - return -1; - } - - return fd; -} diff --git a/udhcp/socket.h b/udhcp/socket.h deleted file mode 100644 index 66179d4..0000000 --- a/udhcp/socket.h +++ /dev/null @@ -1,8 +0,0 @@ -/* socket.h */ -#ifndef _SOCKET_H -#define _SOCKET_H - -int read_interface(char *interface, int *ifindex, uint32_t *addr, uint8_t *arp); -int listen_socket(uint32_t ip, int port, char *inf); - -#endif diff --git a/udhcp/static_leases.c b/udhcp/static_leases.c deleted file mode 100644 index 1124d39..0000000 --- a/udhcp/static_leases.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * static_leases.c -- Couple of functions to assist with storing and - * retrieving data for static leases - * - * Wade Berrier September 2004 - * - */ - - -#include -#include -#include - -#include "static_leases.h" -#include "dhcpd.h" - -/* Takes the address of the pointer to the static_leases linked list, - * Address to a 6 byte mac address - * Address to a 4 byte ip address */ -int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip) -{ - - struct static_lease *cur; - struct static_lease *new_static_lease; - - /* Build new node */ - new_static_lease = xmalloc(sizeof(struct static_lease)); - new_static_lease->mac = mac; - new_static_lease->ip = ip; - new_static_lease->next = NULL; - - /* If it's the first node to be added... */ - if(*lease_struct == NULL) - { - *lease_struct = new_static_lease; - } - else - { - cur = *lease_struct; - while(cur->next != NULL) - { - cur = cur->next; - } - - cur->next = new_static_lease; - } - - return 1; - -} - -/* Check to see if a mac has an associated static lease */ -uint32_t getIpByMac(struct static_lease *lease_struct, void *arg) -{ - uint32_t return_ip; - struct static_lease *cur = lease_struct; - uint8_t *mac = arg; - - return_ip = 0; - - while(cur != NULL) - { - /* If the client has the correct mac */ - if(memcmp(cur->mac, mac, 6) == 0) - { - return_ip = *(cur->ip); - } - - cur = cur->next; - } - - return return_ip; - -} - -/* Check to see if an ip is reserved as a static ip */ -uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip) -{ - struct static_lease *cur = lease_struct; - - uint32_t return_val = 0; - - while(cur != NULL) - { - /* If the client has the correct ip */ - if(*cur->ip == ip) - return_val = 1; - - cur = cur->next; - } - - return return_val; - -} - -#ifdef UDHCP_DEBUG -/* Print out static leases just to check what's going on */ -/* Takes the address of the pointer to the static_leases linked list */ -void printStaticLeases(struct static_lease **arg) -{ - /* Get a pointer to the linked list */ - struct static_lease *cur = *arg; - - while(cur != NULL) - { - /* printf("PrintStaticLeases: Lease mac Address: %x\n", cur->mac); */ - printf("PrintStaticLeases: Lease mac Value: %x\n", *(cur->mac)); - /* printf("PrintStaticLeases: Lease ip Address: %x\n", cur->ip); */ - printf("PrintStaticLeases: Lease ip Value: %x\n", *(cur->ip)); - - cur = cur->next; - } - - -} -#endif - - - diff --git a/udhcp/static_leases.h b/udhcp/static_leases.h deleted file mode 100644 index d06520b..0000000 --- a/udhcp/static_leases.h +++ /dev/null @@ -1,25 +0,0 @@ -/* static_leases.h */ -#ifndef _STATIC_LEASES_H -#define _STATIC_LEASES_H - -#include "dhcpd.h" - -/* Config file will pass static lease info to this function which will add it - * to a data structure that can be searched later */ -int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip); - -/* Check to see if a mac has an associated static lease */ -uint32_t getIpByMac(struct static_lease *lease_struct, void *arg); - -/* Check to see if an ip is reserved as a static ip */ -uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip); - -#ifdef UDHCP_DEBUG -/* Print out static leases just to check what's going on */ -void printStaticLeases(struct static_lease **lease_struct); -#endif - -#endif - - - diff --git a/udhcp/udhcpc.8 b/udhcp/udhcpc.8 deleted file mode 100644 index 61bc2db..0000000 --- a/udhcp/udhcpc.8 +++ /dev/null @@ -1,208 +0,0 @@ -.TH UDHCPC 8 2001-09-26 GNU/Linux "GNU/Linux Administrator's Manual" -.SH NAME -udhcpc \- very small DHCP client -.SH SYNOPSIS -.B udhcpc -.RI [ OPTION ]... -.SH DESCRIPTION -The udhcp client negotiates a lease with the DHCP server and -executes a script when it is obtained or lost. -.SH OPTIONS -.TP -.BI \-c\ CLIENTID ,\ \-\-clientid= CLIENTID -Send the client identifier -.IR CLIENTID . -.TP -.BR -f ,\ \-\-foreground -Do not fork after obtaining a lease. -.TP -.BI \-H\ HOSTNAME ,\ \-\-hostname= HOSTNAME -Send the client hostname -.IR HOSTNAME . -.TP -.BI \-h\ HOSTNAME -Alias for -H -.IR HOSTNAME . -.TP -.BI \-i\ INTERFACE ,\ \-\-interface= INTERFACE -Configure -.IR INTERFACE . -.TP -.BR -n ,\ \-\-now -Exit with failure if a lease cannot be obtained. -.TP -.BI \-p\ FILE ,\ \-\-pidfile= FILE -Write the process ID of the daemon to -.IR FILE . -.TP -.BR -q ,\ \-\-quit -Exit after obtaining a lease. -.TP -.BI \-r\ ADDRESS ,\ \-\-request= ADDRESS -Request IP address -.IR ADDRESS . -.TP -.BI \-s\ FILE ,\ \-\-script= FILE -Use script -.IR FILE . -.TP -.BR -v ,\ \-\-version -Display version. -.SH USAGE -When an event occurs, -.B udhcpc -executes a script. There are four possible arguments to this -script: -.TP -.B deconfig -.B deconfig -is used when -.B udhcpc -starts, and when a lease is lost. The script should put the -interface in an up, but deconfigured, state. -.TP -.B bound -.B bound -is used when -.B udhcpc -moves from an unbound to a bound state. The script should -configure the interface and set any other relevant parameters -(e.g., default gateway, dns server, etc.). -.TP -.B renew -.B renew -is used when -.B udhcpc -when a lease is renewed. The interface is already -configured, so the IP address will not change. Other parameters -(e.g., default gateway, subnet mask, dns server) may. -.TP -.B nak -.B nak -is used when -.B udhcpc -receieves a NAK packet from the server. The -enviromental variable -.B $message -will contain the reason for the -NAK message if the server included one. Processing this message -is optional, as the script will also be called with deconfig if -need be. -.PP -Parameters are passed to the script via the following environment -variables: -.TP -.B HOME -The inherited HOME, or "/" if it is unset. -.TP -.B PATH -The inherited PATH, or "/bin:/usr/bin:/sbin:/usr/sbin" if it is -unset. -.TP -.B interface -The interface. -.TP -.B ip -The client IP address. -.TP -.B siaddr -The BOOTP next server option. -.TP -.B sname -The BOOTP server name option. -.TP -.B boot_file -The BOOTP boot file option. -.TP -.B subnet -The subnet mask. -.TP -.B timezone -The timezone offset from UTC in seconds. -.TP -.B router -The list of routers. -.TP -.B timesvr -The list of time servers. -.TP -.B namesvr -The list of IEN 116 name servers. -.TP -.B dns -The list of DNS servers. -.TP -.B logsvr -The list of MIT-LCS UDP log servers. -.TP -.B cookiesvr -The list of RFC 865 cookie servers. -.TP -.B lprsvr -The list of LPR servers. -.TP -.B hostname -The host name. -.TP -.B bootsize -The length in 512-octet blocks of the bootfile. -.TP -.B domain -The domain name of the network. -.TP -.B swapsvr -The client's swap server. -.TP -.B rootpath -The path of the client's root dist. -.TP -.B ipttl -The TTL. -.TP -.B mtu -The MTU. -.TP -.B broadcast -The broadcast address. -.TP -.B ntpsrv -The list of NTP servers. -.TP -.B wins -The list of WINS servers. -.TP -.B lease -The lease time in seconds. -.TP -.B dhcptype -The DHCP message type (safely ignored). -.TP -.B serverid -The server IP address. -.TP -.B message -Reason for a DHCPNAK. -.TP -.B tftp -The TFTP server name. -.TP -.B bootfile -The bootfile name. -.SH FILES -.TP -.I /etc/udhcpc/default.script -Script run when leases are obtained or lost. -.SH NOTES -.B udhcpc -responds to the following signals: -.TP -.B SIGUSR1 -This signal causes -.B udhcpc -to renew the current lease or, if it does not have one, obtain a -new lease. -.TP -.B SIGUSR2 -This signal caused -.B udhcpc -to release the current lease. diff --git a/udhcp/udhcpd.8 b/udhcp/udhcpd.8 deleted file mode 100644 index be8fac8..0000000 --- a/udhcp/udhcpd.8 +++ /dev/null @@ -1,17 +0,0 @@ -.TH UDHCPD 8 2001-09-27 GNU/Linux "GNU/Linux Administrator's Manual" -.SH NAME -udhcpd \- very small DHCP server -.SH SYNOPSIS -.B udhcpd -.SH DESCRIPTION -The udhcp server negotiates leases with DHCP clients. -.SH FILES -.TP -.I /etc/udhcpd.conf -Configuration file. -.TP -.I /var/lib/misc/udhcpd.leases -Lease information file. -.SH SEE ALSO -.BR dumpleases (1), -.BR udhcpd.conf (8). diff --git a/udhcp/udhcpd.conf.5 b/udhcp/udhcpd.conf.5 deleted file mode 100644 index 99e66ca..0000000 --- a/udhcp/udhcpd.conf.5 +++ /dev/null @@ -1,166 +0,0 @@ -.TH UDHCPD.CONF 5 2001-09-26 GNU/Linux "GNU/Linux Administrator's Manual" -.SH NAME -udhcpd.conf \- udhcp server configuration file -.SH DESCRIPTION -The file -.I /etc/udhcpd.conf -contains configuration information specific to the udhcp server. -It should contain one configuration keyword per line, followed by -appropriate configuration information. -.SH OPTIONS -.TP -.BI start\ ADDRESS -The starting address of the IP lease block is -.IR ADDRESS . -The default is -.BR 192.168.0.20 . -.TP -.BI end\ ADDRESS -The ending address of the IP lease block is -.IR ADDRESS . -The default is -.BR 192.168.0.254 . -.TP -.BI interface\ INTERFACE -The udhcp server should listen on -.IR INTERFACE . -The default is -.BR eth0 . -.TP -.BI max_leases\ LEASES -Offer at most -.I LEASES -leases (including those reserved by OFFERs, DECLINEs, and ARP -conflicts). The default is -.BR 254 . -.TP -.BI remaining\ REMAINING -If -.I REMAINING -is -.BR yes , -store the time remaining for each lease. If it is -.BR no , -store the expiration time for each lease. The default is -.BR yes . -.TP -.BI auto_time\ SECONDS -Write the lease information to a file every -.I SECONDS -seconds. The default is -.BR 7200 . -.TP -.BI decline_time\ SECONDS -Reserve an IP for -.I SECONDS -seconds if a DHCP decline message is received. The default is -.BR 3600 . -.TP -.BI conflict_time\ SECONDS -Reserve an IP for -.I SECONDS -seconds if an ARP conflict occurs. The default is -.BR 3600 . -.TP -.BI offer_time\ SECONDS -Reserve an IP for -.I SECONDS -seconds if it is offered. The default is -.BR 60 . -.TP -.BI min_lease\ SECONDS -Reserve an IP for the full lease time if the lease to be given is less than -.I SECONDS -seconds. The default is -.BR 60 . -.TP -.BI lease_file\ FILE -Write the lease information to -.IR FILE . -The default is -.BR /var/lib/misc/udhcpd.leases . -.TP -.BI pidfile\ FILE -Write the process ID to -.IR FILE . -The default is -.BR /var/run/udhcpd.pid . -.TP -.BI notify_file\ FILE -Execute -.I FILE -after the lease information is written. By default, no file is executed. -.TP -.BI siaddr\ ADDRESS -BOOTP specific option. The default is -.BR 0.0.0.0 . -.TP -.BI sname\ NAME -BOOTP specific option. There is no default. -.TP -.BI boot_file\ FILE -BOOTP specific option. There is no default. -.TP -.BI option\ OPTION -DHCP specific option. -.RS -.TP -.BI subnet\ ADDRESS -.TP -.BI timezone\ OFFSET -.TP -.BI router\ ADDRESS... -.TP -.BI timesvr\ ADDRESS... -.TP -.BI namesvr\ ADDRESS... -.TP -.BI dns\ ADDRESS... -.TP -.BI logsvr\ ADDRESS... -.TP -.BI cookiesvr\ ADDRESS... -.TP -.BI lprsvr\ ADDRESS... -.TP -.BI hostname\ HOSTNAME -.TP -.BI bootsize\ SIZE -.TP -.BI domain\ DOMAIN -.TP -.BI swapsvr\ ADDRESS -.TP -.BI rootpath\ PATH -.TP -.BI ipttl\ TTL -.TP -.BI mtu\ MTU -.TP -.BI broadcast\ ADDRESS -.TP -.BI ntpsrv\ ADDRESS... -.TP -.BI wins\ ADDRESS... -.TP -.BI requestip\ ADDRESS -.TP -.BI lease\ SECONDS -.TP -.BI dhcptype\ TYPE -.TP -.BI serverid\ ADDRESS -.TP -.BI tftp\ FILE -.TP -.BI wpad\ URL -.TP -.BI bootfile\ FILE -The default for -.B lease -is -.BR 864000 . -There are no defaults for the other options. -.RE -.SH SEE ALSO -.BR udhcpd (8). diff --git a/udhcp/version.h b/udhcp/version.h deleted file mode 100644 index 3862539..0000000 --- a/udhcp/version.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _UDHCP_VERSION_H -#define _UDHCP_VERSION_H - -#define VERSION "0.9.9-pre" - -#endif -- 2.1.4