1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
#include "cache.h"
#include "rsh.h"
#include <sys/socket.h>
#include <errno.h>
unsigned char local_version = 1;
unsigned char remote_version = 0;
int serve_object(int fd_in, int fd_out) {
ssize_t size;
int posn = 0;
char sha1[20];
unsigned long objsize;
void *buf;
signed char remote;
do {
size = read(fd_in, sha1 + posn, 20 - posn);
if (size < 0) {
perror("git-ssh-push: read ");
return -1;
}
if (!size)
return -1;
posn += size;
} while (posn < 20);
/* fprintf(stderr, "Serving %s\n", sha1_to_hex(sha1)); */
remote = 0;
buf = map_sha1_file(sha1, &objsize);
if (!buf) {
fprintf(stderr, "git-ssh-push: could not find %s\n",
sha1_to_hex(sha1));
remote = -1;
}
write(fd_out, &remote, 1);
if (remote < 0)
return 0;
posn = 0;
do {
size = write(fd_out, buf + posn, objsize - posn);
if (size <= 0) {
if (!size) {
fprintf(stderr, "git-ssh-push: write closed");
} else {
perror("git-ssh-push: write ");
}
return -1;
}
posn += size;
} while (posn < objsize);
return 0;
}
int serve_version(int fd_in, int fd_out)
{
if (read(fd_in, &remote_version, 1) < 1)
return -1;
write(fd_out, &local_version, 1);
return 0;
}
void service(int fd_in, int fd_out) {
char type;
int retval;
do {
retval = read(fd_in, &type, 1);
if (retval < 1) {
if (retval < 0)
perror("git-ssh-push: read ");
return;
}
if (type == 'v' && serve_version(fd_in, fd_out))
return;
if (type == 'o' && serve_object(fd_in, fd_out))
return;
} while (1);
}
int main(int argc, char **argv)
{
int arg = 1;
char *commit_id;
char *url;
int fd_in, fd_out;
while (arg < argc && argv[arg][0] == '-') {
arg++;
}
if (argc < arg + 2) {
usage("git-ssh-push [-c] [-t] [-a] commit-id url");
return 1;
}
commit_id = argv[arg];
url = argv[arg + 1];
if (setup_connection(&fd_in, &fd_out, "git-ssh-pull", url, arg, argv + 1))
return 1;
service(fd_in, fd_out);
return 0;
}
|
