freshlybakedca.ke
Git fork
1#include "builtin.h"
2#include "credential.h"
3#include "gettext.h"
4#include "parse-options.h"
5#include "path.h"
6#include "strbuf.h"
7#include "write-or-die.h"
8
9#ifndef NO_UNIX_SOCKETS
10
11#include "unix-socket.h"
12#include "run-command.h"
13
14#define FLAG_SPAWN 0x1
15#define FLAG_RELAY 0x2
16
17#ifdef GIT_WINDOWS_NATIVE
18
19static int connection_closed(int error)
20{
21 return (error == EINVAL);
22}
23
24static int connection_fatally_broken(int error)
25{
26 return (error != ENOENT) && (error != ENETDOWN);
27}
28
29#else
30
31static int connection_closed(int error)
32{
33 return error == ECONNRESET || error == ECONNABORTED;
34}
35
36static int connection_fatally_broken(int error)
37{
38 return (error != ENOENT) && (error != ECONNREFUSED);
39}
40
41#endif
42
43static int send_request(const char *socket, const struct strbuf *out)
44{
45 int got_data = 0;
46 int fd = unix_stream_connect(socket, 0);
47
48 if (fd < 0)
49 return -1;
50
51 if (write_in_full(fd, out->buf, out->len) < 0)
52 die_errno("unable to write to cache daemon");
53 shutdown(fd, SHUT_WR);
54
55 while (1) {
56 char in[1024];
57 int r;
58
59 r = read_in_full(fd, in, sizeof(in));
60 if (r == 0 || (r < 0 && connection_closed(errno)))
61 break;
62 if (r < 0)
63 die_errno("read error from cache daemon");
64 write_or_die(1, in, r);
65 got_data = 1;
66 }
67 close(fd);
68 return got_data;
69}
70
71static void spawn_daemon(const char *socket)
72{
73 struct child_process daemon = CHILD_PROCESS_INIT;
74 char buf[128];
75 int r;
76
77 strvec_pushl(&daemon.args,
78 "credential-cache--daemon", socket,
79 NULL);
80 daemon.git_cmd = 1;
81 daemon.no_stdin = 1;
82 daemon.out = -1;
83
84 if (start_command(&daemon))
85 die_errno("unable to start cache daemon");
86 r = read_in_full(daemon.out, buf, sizeof(buf));
87 if (r < 0)
88 die_errno("unable to read result code from cache daemon");
89 if (r != 3 || memcmp(buf, "ok\n", 3))
90 die("cache daemon did not start: %.*s", r, buf);
91
92 child_process_clear(&daemon);
93 close(daemon.out);
94}
95
96static void do_cache(const char *socket, const char *action, int timeout,
97 int flags)
98{
99 struct strbuf buf = STRBUF_INIT;
100
101 strbuf_addf(&buf, "action=%s\n", action);
102 strbuf_addf(&buf, "timeout=%d\n", timeout);
103 if (flags & FLAG_RELAY) {
104 if (strbuf_read(&buf, 0, 0) < 0)
105 die_errno("unable to relay credential");
106 }
107
108 if (send_request(socket, &buf) < 0) {
109 if (connection_fatally_broken(errno))
110 die_errno("unable to connect to cache daemon");
111 if (flags & FLAG_SPAWN) {
112 spawn_daemon(socket);
113 if (send_request(socket, &buf) < 0)
114 die_errno("unable to connect to cache daemon");
115 }
116 }
117 strbuf_release(&buf);
118}
119
120static char *get_socket_path(void)
121{
122 struct stat sb;
123 char *old_dir, *socket;
124 old_dir = interpolate_path("~/.git-credential-cache", 0);
125 if (old_dir && !stat(old_dir, &sb) && S_ISDIR(sb.st_mode))
126 socket = xstrfmt("%s/socket", old_dir);
127 else
128 socket = xdg_cache_home("credential/socket");
129 free(old_dir);
130 return socket;
131}
132
133static void announce_capabilities(void)
134{
135 struct credential c = CREDENTIAL_INIT;
136 c.capa_authtype.request_initial = 1;
137 credential_announce_capabilities(&c, stdout);
138}
139
140int cmd_credential_cache(int argc,
141 const char **argv,
142 const char *prefix,
143 struct repository *repo UNUSED)
144{
145 const char *socket_path_arg = NULL;
146 char *socket_path;
147 int timeout = 900;
148 const char *op;
149 const char * const usage[] = {
150 "git credential-cache [<options>] <action>",
151 NULL
152 };
153 struct option options[] = {
154 OPT_INTEGER(0, "timeout", &timeout,
155 "number of seconds to cache credentials"),
156 OPT_STRING(0, "socket", &socket_path_arg, "path",
157 "path of cache-daemon socket"),
158 OPT_END()
159 };
160
161 argc = parse_options(argc, argv, prefix, options, usage, 0);
162 if (!argc)
163 usage_with_options(usage, options);
164 op = argv[0];
165
166 if (!have_unix_sockets())
167 die(_("credential-cache unavailable; no unix socket support"));
168
169 socket_path = xstrdup_or_null(socket_path_arg);
170 if (!socket_path)
171 socket_path = get_socket_path();
172 if (!socket_path)
173 die("unable to find a suitable socket path; use --socket");
174
175 if (!strcmp(op, "exit"))
176 do_cache(socket_path, op, timeout, 0);
177 else if (!strcmp(op, "get") || !strcmp(op, "erase"))
178 do_cache(socket_path, op, timeout, FLAG_RELAY);
179 else if (!strcmp(op, "store"))
180 do_cache(socket_path, op, timeout, FLAG_RELAY|FLAG_SPAWN);
181 else if (!strcmp(op, "capability"))
182 announce_capabilities();
183 else
184 ; /* ignore unknown operation */
185
186 free(socket_path);
187 return 0;
188}
189
190#else
191
192int cmd_credential_cache(int argc, const char **argv, const char *prefix,
193 struct repository *repo UNUSED)
194{
195 const char * const usage[] = {
196 "git credential-cache [options] <action>",
197 "",
198 "credential-cache is disabled in this build of Git",
199 NULL
200 };
201 struct option options[] = { OPT_END() };
202
203 argc = parse_options(argc, argv, prefix, options, usage, 0);
204 die(_("credential-cache unavailable; no unix socket support"));
205}
206
207#endif /* NO_UNIX_SOCKETS */