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Commit | Line | Data |
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6eb7ed54 DB |
1 | #include "cache.h" |
2 | #include "rsh.h" | |
c7c4bbe6 | 3 | #include "refs.h" |
6eb7ed54 | 4 | |
dba385bb DB |
5 | unsigned char local_version = 1; |
6 | unsigned char remote_version = 0; | |
7 | ||
8 | int serve_object(int fd_in, int fd_out) { | |
6eb7ed54 | 9 | ssize_t size; |
dba385bb DB |
10 | int posn = 0; |
11 | char sha1[20]; | |
6eb7ed54 DB |
12 | unsigned long objsize; |
13 | void *buf; | |
dba385bb DB |
14 | signed char remote; |
15 | do { | |
16 | size = read(fd_in, sha1 + posn, 20 - posn); | |
17 | if (size < 0) { | |
418aaf84 | 18 | perror("git-ssh-push: read "); |
dba385bb DB |
19 | return -1; |
20 | } | |
21 | if (!size) | |
22 | return -1; | |
23 | posn += size; | |
24 | } while (posn < 20); | |
25 | ||
26 | /* fprintf(stderr, "Serving %s\n", sha1_to_hex(sha1)); */ | |
27 | remote = 0; | |
28 | ||
29 | buf = map_sha1_file(sha1, &objsize); | |
30 | ||
31 | if (!buf) { | |
418aaf84 | 32 | fprintf(stderr, "git-ssh-push: could not find %s\n", |
dba385bb DB |
33 | sha1_to_hex(sha1)); |
34 | remote = -1; | |
35 | } | |
36 | ||
37 | write(fd_out, &remote, 1); | |
38 | ||
39 | if (remote < 0) | |
40 | return 0; | |
41 | ||
42 | posn = 0; | |
6eb7ed54 | 43 | do { |
dba385bb DB |
44 | size = write(fd_out, buf + posn, objsize - posn); |
45 | if (size <= 0) { | |
46 | if (!size) { | |
418aaf84 | 47 | fprintf(stderr, "git-ssh-push: write closed"); |
dba385bb | 48 | } else { |
418aaf84 | 49 | perror("git-ssh-push: write "); |
6eb7ed54 | 50 | } |
dba385bb DB |
51 | return -1; |
52 | } | |
53 | posn += size; | |
54 | } while (posn < objsize); | |
55 | return 0; | |
56 | } | |
6eb7ed54 | 57 | |
dba385bb DB |
58 | int serve_version(int fd_in, int fd_out) |
59 | { | |
60 | if (read(fd_in, &remote_version, 1) < 1) | |
61 | return -1; | |
62 | write(fd_out, &local_version, 1); | |
63 | return 0; | |
64 | } | |
6eb7ed54 | 65 | |
c7c4bbe6 DB |
66 | int serve_ref(int fd_in, int fd_out) |
67 | { | |
68 | char ref[PATH_MAX]; | |
69 | unsigned char sha1[20]; | |
70 | int posn = 0; | |
71 | signed char remote = 0; | |
72 | do { | |
73 | if (read(fd_in, ref + posn, 1) < 1) | |
74 | return -1; | |
75 | posn++; | |
76 | } while (ref[posn - 1]); | |
77 | if (get_ref_sha1(ref, sha1)) | |
78 | remote = -1; | |
79 | write(fd_out, &remote, 1); | |
80 | if (remote) | |
81 | return 0; | |
82 | write(fd_out, sha1, 20); | |
83 | return 0; | |
84 | } | |
85 | ||
86 | ||
dba385bb DB |
87 | void service(int fd_in, int fd_out) { |
88 | char type; | |
89 | int retval; | |
90 | do { | |
91 | retval = read(fd_in, &type, 1); | |
92 | if (retval < 1) { | |
93 | if (retval < 0) | |
418aaf84 | 94 | perror("git-ssh-push: read "); |
6eb7ed54 DB |
95 | return; |
96 | } | |
dba385bb DB |
97 | if (type == 'v' && serve_version(fd_in, fd_out)) |
98 | return; | |
99 | if (type == 'o' && serve_object(fd_in, fd_out)) | |
100 | return; | |
c7c4bbe6 DB |
101 | if (type == 'r' && serve_ref(fd_in, fd_out)) |
102 | return; | |
6eb7ed54 DB |
103 | } while (1); |
104 | } | |
105 | ||
106 | int main(int argc, char **argv) | |
107 | { | |
108 | int arg = 1; | |
109 | char *commit_id; | |
110 | char *url; | |
111 | int fd_in, fd_out; | |
001d4a27 LT |
112 | const char *prog = getenv("GIT_SSH_PULL") ? : "git-ssh-pull"; |
113 | ||
6eb7ed54 | 114 | while (arg < argc && argv[arg][0] == '-') { |
c7c4bbe6 DB |
115 | if (argv[arg][1] == 'w') |
116 | arg++; | |
6eb7ed54 DB |
117 | arg++; |
118 | } | |
119 | if (argc < arg + 2) { | |
c7c4bbe6 | 120 | usage("git-ssh-push [-c] [-t] [-a] [-w ref] commit-id url"); |
6eb7ed54 DB |
121 | return 1; |
122 | } | |
123 | commit_id = argv[arg]; | |
124 | url = argv[arg + 1]; | |
001d4a27 | 125 | if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1)) |
6eb7ed54 DB |
126 | return 1; |
127 | ||
128 | service(fd_in, fd_out); | |
129 | return 0; | |
130 | } |