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introduce gotd(8), a Git repository server reachable via ssh(1) This is an initial barebones implementation which provides the absolute minimum of functionality required to serve got(1) and git(1) clients. Basic fetch/send functionality has been tested and seems to work here, but this server is not yet expected to be stable. More testing is welcome. See the man pages for setup instructions. The current design uses one reader and one writer process per repository, which will have to be extended to N readers and N writers in the future. At startup, each process will chroot(2) into its assigned repository. This works because gotd(8) can only be started as root, and will then fork+exec, chroot, and privdrop. At present the parent process runs with the following pledge(2) promises: "stdio rpath wpath cpath proc getpw sendfd recvfd fattr flock unix unveil" The parent is the only process able to modify the repository in a way that becomes visible to Git clients. The parent uses unveil(2) to restrict its view of the filesystem to /tmp and the repositories listed in the configuration file gotd.conf(5). Per-repository chroot(2) processes use "stdio rpath sendfd recvfd". The writer defers to the parent for modifying references in the repository to point at newly uploaded commits. The reader is fine without such help, because Git repositories can be read without having to create any lock-files. gotd(8) requires a dedicated user ID, which should own repositories on the filesystem, and a separate secondary group, which should not have filesystem-level repository access, and must be allowed access to the gotd(8) socket. To obtain Git repository access, users must be members of this secondary group, and must have their login shell set to gotsh(1). gotsh(1) connects to the gotd(8) socket and speaks Git-protocol towards the client on the other end of the SSH connection. gotsh(1) is not an interactive command shell. At present, authenticated clients are granted read/write access to all repositories and all references (except for the "refs/got/" and the "refs/remotes/" namespaces, which are already being protected from modification). While complicated access control mechanism are not a design goal, making it possible to safely offer anonymous Git repository access over ssh(1) is on the road map.
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 1 a596b957 2022-07-14 tracey .PATH:${.CURDIR}/../lib

 2 a596b957 2022-07-14 tracey 

 3 a596b957 2022-07-14 tracey SUBDIR = libexec

 4 a596b957 2022-07-14 tracey 

 5 a596b957 2022-07-14 tracey .include "../got-version.mk"

 6 a596b957 2022-07-14 tracey .include "Makefile.inc"

 7 a596b957 2022-07-14 tracey 

 8 a596b957 2022-07-14 tracey PROG =		gotwebd

 9 a596b957 2022-07-14 tracey SRCS =		config.c sockets.c log.c gotwebd.c parse.y proc.c \

10 a596b957 2022-07-14 tracey 		fcgi.c gotweb.c got_operations.c

11 a596b957 2022-07-14 tracey SRCS +=		blame.c commit_graph.c delta.c diff.c \

12 a596b957 2022-07-14 tracey 		diffreg.c error.c fileindex.c object.c object_cache.c \

13 a596b957 2022-07-14 tracey 		object_idset.c object_parse.c opentemp.c path.c pack.c \

14 a596b957 2022-07-14 tracey 		privsep.c reference.c repository.c sha1.c worktree.c \

15 a596b957 2022-07-14 tracey 		utf8.c inflate.c buf.c rcsutil.c diff3.c \

16 a596b957 2022-07-14 tracey 		lockfile.c deflate.c object_create.c delta_cache.c \

17 a596b957 2022-07-14 tracey 		gotconfig.c diff_main.c diff_atomize_text.c diff_myers.c \

18 a596b957 2022-07-14 tracey 		diff_output.c diff_output_plain.c diff_output_unidiff.c \

19 a596b957 2022-07-14 tracey 		diff_output_edscript.c diff_patience.c bloom.c murmurhash2.c \

20 8e359fa0 2022-10-13 stsp 		worktree_open.c patch.c sigs.c date.c sockaddr.c \

21 96fd6df1 2022-10-13 stsp 		object_open_privsep.c read_gitconfig_privsep.c \

22 13b2bc37 2022-10-23 stsp 		read_gotconfig_privsep.c pollfd.c reference_parse.c

23 a596b957 2022-07-14 tracey 

24 a596b957 2022-07-14 tracey MAN =		${PROG}.conf.5 ${PROG}.8

25 a596b957 2022-07-14 tracey 

26 a596b957 2022-07-14 tracey CPPFLAGS +=	-I${.CURDIR}/../include -I${.CURDIR}/../lib -I${.CURDIR}

27 a596b957 2022-07-14 tracey LDADD +=	-lz -levent -lutil -lm

28 a596b957 2022-07-14 tracey YFLAGS =

29 a596b957 2022-07-14 tracey DPADD =		${LIBEVENT} ${LIBUTIL}

30 a596b957 2022-07-14 tracey #CFLAGS +=	-DGOT_NO_OBJ_CACHE

31 a596b957 2022-07-14 tracey 

32 a596b957 2022-07-14 tracey .if ${GOT_RELEASE} != "Yes"

33 a596b957 2022-07-14 tracey NOMAN = Yes

34 a596b957 2022-07-14 tracey .endif

35 a596b957 2022-07-14 tracey 

36 a596b957 2022-07-14 tracey .if defined(PROFILE)

37 a596b957 2022-07-14 tracey CPPFLAGS += -DPROFILE

38 a596b957 2022-07-14 tracey DEBUG = -O0 -pg -g -static

39 a596b957 2022-07-14 tracey .else

40 a596b957 2022-07-14 tracey DEBUG = -O0 -g

41 a596b957 2022-07-14 tracey .endif

42 a596b957 2022-07-14 tracey 

43 a596b957 2022-07-14 tracey realinstall:

44 a596b957 2022-07-14 tracey 	if [ ! -d ${DESTDIR}${PUB_REPOS_DIR}/. ]; then \

45 a596b957 2022-07-14 tracey 		${INSTALL} -d -o root -g daemon -m 755 ${DESTDIR}${PUB_REPOS_DIR}; \

46 a596b957 2022-07-14 tracey 	fi

47 a596b957 2022-07-14 tracey 	${INSTALL} -c -o root -g daemon -m 0755 ${PROG} ${BINDIR}/${PROG}

48 a596b957 2022-07-14 tracey 	if [ ! -d ${DESTDIR}${HTTPD_DIR}/. ]; then \

49 a596b957 2022-07-14 tracey 		${INSTALL} -d -o root -g daemon -m 755 ${DESTDIR}${HTTPD_DIR}; \

50 a596b957 2022-07-14 tracey 	fi

51 a596b957 2022-07-14 tracey 	if [ ! -d ${DESTDIR}${PROG_DIR}/. ]; then \

52 a596b957 2022-07-14 tracey 		${INSTALL} -d -o root -g daemon -m 755 ${DESTDIR}${PROG_DIR}; \

53 a596b957 2022-07-14 tracey 	fi

54 7cc8fde4 2022-08-31 op 	${INSTALL} -c -o ${WWWUSR} -g ${WWWGRP} -m 0644 \

55 a596b957 2022-07-14 tracey 	    ${.CURDIR}/files/htdocs/${PROG}/* ${DESTDIR}${PROG_DIR}

56 a596b957 2022-07-14 tracey 

57 a596b957 2022-07-14 tracey .include <bsd.prog.mk>