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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
| | #include "cache.h"
#include "credential.h"
#include "string-list.h"
#include "parse-options.h"
#include "unix-socket.h"
#include "run-command.h"
#define FLAG_SPAWN 0x1
#define FLAG_RELAY 0x2
static int send_request(const char *socket, const struct strbuf *out)
{
int got_data = 0;
int fd = unix_stream_connect(socket);
if (fd < 0)
return -1;
if (write_in_full(fd, out->buf, out->len) < 0)
die_errno("unable to write to cache daemon");
shutdown(fd, SHUT_WR);
while (1) {
char in[1024];
int r;
r = read_in_full(fd, in, sizeof(in));
if (r == 0 || (r < 0 && errno == ECONNRESET))
break;
if (r < 0)
die_errno("read error from cache daemon");
write_or_die(1, in, r);
got_data = 1;
}
close(fd);
return got_data;
}
static void spawn_daemon(const char *socket)
{
struct child_process daemon = CHILD_PROCESS_INIT;
char buf[128];
int r;
strvec_pushl(&daemon.args,
"credential-cache--daemon", socket,
NULL);
daemon.git_cmd = 1;
daemon.no_stdin = 1;
daemon.out = -1;
if (start_command(&daemon))
die_errno("unable to start cache daemon");
r = read_in_full(daemon.out, buf, 3);
if (r < 0)
die_errno("unable to read result code from cache daemon");
if (r != 3 || memcmp(buf, "ok\n", 3))
die("cache daemon did not start: %.*s", r, buf);
close(daemon.out);
}
static void do_cache(const char *socket, const char *action, int timeout,
int flags)
{
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "action=%s\n", action);
strbuf_addf(&buf, "timeout=%d\n", timeout);
if (flags & FLAG_RELAY) {
if (strbuf_read(&buf, 0, 0) < 0)
die_errno("unable to relay credential");
}
if (send_request(socket, &buf) < 0) {
if (errno != ENOENT && errno != ECONNREFUSED)
die_errno("unable to connect to cache daemon");
if (flags & FLAG_SPAWN) {
spawn_daemon(socket);
if (send_request(socket, &buf) < 0)
die_errno("unable to connect to cache daemon");
}
}
strbuf_release(&buf);
}
static char *get_socket_path(void)
{
struct stat sb;
char *old_dir, *socket;
old_dir = expand_user_path("~/.git-credential-cache", 0);
if (old_dir && !stat(old_dir, &sb) && S_ISDIR(sb.st_mode))
socket = xstrfmt("%s/socket", old_dir);
else
socket = xdg_cache_home("credential/socket");
free(old_dir);
return socket;
}
int cmd_main(int argc, const char **argv)
{
char *socket_path = NULL;
int timeout = 900;
const char *op;
const char * const usage[] = {
"git credential-cache [<options>] <action>",
NULL
};
struct option options[] = {
OPT_INTEGER(0, "timeout", &timeout,
"number of seconds to cache credentials"),
OPT_STRING(0, "socket", &socket_path, "path",
"path of cache-daemon socket"),
OPT_END()
};
argc = parse_options(argc, argv, NULL, options, usage, 0);
if (!argc)
usage_with_options(usage, options);
op = argv[0];
if (!socket_path)
socket_path = get_socket_path();
if (!socket_path)
die("unable to find a suitable socket path; use --socket");
if (!strcmp(op, "exit"))
do_cache(socket_path, op, timeout, 0);
else if (!strcmp(op, "get") || !strcmp(op, "erase"))
do_cache(socket_path, op, timeout, FLAG_RELAY);
else if (!strcmp(op, "store"))
do_cache(socket_path, op, timeout, FLAG_RELAY|FLAG_SPAWN);
else
; /* ignore unknown operation */
return 0;
}
|