Commit | Line | Data |
---|---|---|
abca927d | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
abca927d JK |
3 | #include "credential.h" |
4 | #include "string-list.h" | |
5 | #include "run-command.h" | |
d3e847c1 | 6 | #include "url.h" |
d3c58b83 | 7 | #include "prompt.h" |
a0d51e8d | 8 | #include "sigchain.h" |
abca927d JK |
9 | |
10 | void credential_init(struct credential *c) | |
11 | { | |
12 | memset(c, 0, sizeof(*c)); | |
13 | c->helpers.strdup_strings = 1; | |
14 | } | |
15 | ||
16 | void credential_clear(struct credential *c) | |
17 | { | |
18 | free(c->protocol); | |
19 | free(c->host); | |
20 | free(c->path); | |
21 | free(c->username); | |
22 | free(c->password); | |
23 | string_list_clear(&c->helpers, 0); | |
24 | ||
25 | credential_init(c); | |
26 | } | |
27 | ||
11825072 JK |
28 | int credential_match(const struct credential *want, |
29 | const struct credential *have) | |
30 | { | |
31 | #define CHECK(x) (!want->x || (have->x && !strcmp(want->x, have->x))) | |
32 | return CHECK(protocol) && | |
33 | CHECK(host) && | |
34 | CHECK(path) && | |
35 | CHECK(username); | |
36 | #undef CHECK | |
37 | } | |
38 | ||
39 | static int credential_config_callback(const char *var, const char *value, | |
40 | void *data) | |
41 | { | |
42 | struct credential *c = data; | |
43 | const char *key, *dot; | |
44 | ||
cf4fff57 | 45 | if (!skip_prefix(var, "credential.", &key)) |
11825072 JK |
46 | return 0; |
47 | ||
48 | if (!value) | |
49 | return config_error_nonbool(var); | |
50 | ||
51 | dot = strrchr(key, '.'); | |
52 | if (dot) { | |
53 | struct credential want = CREDENTIAL_INIT; | |
54 | char *url = xmemdupz(key, dot - key); | |
55 | int matched; | |
56 | ||
57 | credential_from_url(&want, url); | |
58 | matched = credential_match(&want, c); | |
59 | ||
60 | credential_clear(&want); | |
61 | free(url); | |
62 | ||
63 | if (!matched) | |
64 | return 0; | |
65 | key = dot + 1; | |
66 | } | |
67 | ||
24321375 JK |
68 | if (!strcmp(key, "helper")) { |
69 | if (*value) | |
70 | string_list_append(&c->helpers, value); | |
71 | else | |
72 | string_list_clear(&c->helpers, 0); | |
73 | } else if (!strcmp(key, "username")) { | |
d5742425 JK |
74 | if (!c->username) |
75 | c->username = xstrdup(value); | |
76 | } | |
a78fbb4f JK |
77 | else if (!strcmp(key, "usehttppath")) |
78 | c->use_http_path = git_config_bool(var, value); | |
11825072 JK |
79 | |
80 | return 0; | |
81 | } | |
82 | ||
a78fbb4f JK |
83 | static int proto_is_http(const char *s) |
84 | { | |
85 | if (!s) | |
86 | return 0; | |
87 | return !strcmp(s, "https") || !strcmp(s, "http"); | |
88 | } | |
89 | ||
11825072 JK |
90 | static void credential_apply_config(struct credential *c) |
91 | { | |
92 | if (c->configured) | |
93 | return; | |
94 | git_config(credential_config_callback, c); | |
95 | c->configured = 1; | |
a78fbb4f JK |
96 | |
97 | if (!c->use_http_path && proto_is_http(c->protocol)) { | |
6a83d902 | 98 | FREE_AND_NULL(c->path); |
a78fbb4f | 99 | } |
11825072 JK |
100 | } |
101 | ||
abca927d JK |
102 | static void credential_describe(struct credential *c, struct strbuf *out) |
103 | { | |
104 | if (!c->protocol) | |
105 | return; | |
106 | strbuf_addf(out, "%s://", c->protocol); | |
107 | if (c->username && *c->username) | |
108 | strbuf_addf(out, "%s@", c->username); | |
109 | if (c->host) | |
110 | strbuf_addstr(out, c->host); | |
111 | if (c->path) | |
112 | strbuf_addf(out, "/%s", c->path); | |
113 | } | |
114 | ||
ce77aa48 JK |
115 | static char *credential_ask_one(const char *what, struct credential *c, |
116 | int flags) | |
abca927d JK |
117 | { |
118 | struct strbuf desc = STRBUF_INIT; | |
119 | struct strbuf prompt = STRBUF_INIT; | |
120 | char *r; | |
121 | ||
122 | credential_describe(c, &desc); | |
123 | if (desc.len) | |
124 | strbuf_addf(&prompt, "%s for '%s': ", what, desc.buf); | |
125 | else | |
126 | strbuf_addf(&prompt, "%s: ", what); | |
127 | ||
ce77aa48 | 128 | r = git_prompt(prompt.buf, flags); |
abca927d JK |
129 | |
130 | strbuf_release(&desc); | |
131 | strbuf_release(&prompt); | |
132 | return xstrdup(r); | |
133 | } | |
134 | ||
135 | static void credential_getpass(struct credential *c) | |
136 | { | |
137 | if (!c->username) | |
ce77aa48 JK |
138 | c->username = credential_ask_one("Username", c, |
139 | PROMPT_ASKPASS|PROMPT_ECHO); | |
abca927d | 140 | if (!c->password) |
ce77aa48 JK |
141 | c->password = credential_ask_one("Password", c, |
142 | PROMPT_ASKPASS); | |
abca927d JK |
143 | } |
144 | ||
145 | int credential_read(struct credential *c, FILE *fp) | |
146 | { | |
147 | struct strbuf line = STRBUF_INIT; | |
148 | ||
8f309aeb | 149 | while (strbuf_getline_lf(&line, fp) != EOF) { |
abca927d JK |
150 | char *key = line.buf; |
151 | char *value = strchr(key, '='); | |
152 | ||
153 | if (!line.len) | |
154 | break; | |
155 | ||
156 | if (!value) { | |
157 | warning("invalid credential line: %s", key); | |
158 | strbuf_release(&line); | |
159 | return -1; | |
160 | } | |
161 | *value++ = '\0'; | |
162 | ||
163 | if (!strcmp(key, "username")) { | |
164 | free(c->username); | |
165 | c->username = xstrdup(value); | |
166 | } else if (!strcmp(key, "password")) { | |
167 | free(c->password); | |
168 | c->password = xstrdup(value); | |
169 | } else if (!strcmp(key, "protocol")) { | |
170 | free(c->protocol); | |
171 | c->protocol = xstrdup(value); | |
172 | } else if (!strcmp(key, "host")) { | |
173 | free(c->host); | |
174 | c->host = xstrdup(value); | |
175 | } else if (!strcmp(key, "path")) { | |
176 | free(c->path); | |
177 | c->path = xstrdup(value); | |
9c183a70 JK |
178 | } else if (!strcmp(key, "url")) { |
179 | credential_from_url(c, value); | |
59b38652 JK |
180 | } else if (!strcmp(key, "quit")) { |
181 | c->quit = !!git_config_bool("quit", value); | |
abca927d JK |
182 | } |
183 | /* | |
184 | * Ignore other lines; we don't know what they mean, but | |
185 | * this future-proofs us when later versions of git do | |
186 | * learn new lines, and the helpers are updated to match. | |
187 | */ | |
188 | } | |
189 | ||
190 | strbuf_release(&line); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | static void credential_write_item(FILE *fp, const char *key, const char *value) | |
195 | { | |
196 | if (!value) | |
197 | return; | |
198 | fprintf(fp, "%s=%s\n", key, value); | |
199 | } | |
200 | ||
2d6dc182 | 201 | void credential_write(const struct credential *c, FILE *fp) |
abca927d JK |
202 | { |
203 | credential_write_item(fp, "protocol", c->protocol); | |
204 | credential_write_item(fp, "host", c->host); | |
205 | credential_write_item(fp, "path", c->path); | |
206 | credential_write_item(fp, "username", c->username); | |
207 | credential_write_item(fp, "password", c->password); | |
208 | } | |
209 | ||
210 | static int run_credential_helper(struct credential *c, | |
211 | const char *cmd, | |
212 | int want_output) | |
213 | { | |
d3180279 | 214 | struct child_process helper = CHILD_PROCESS_INIT; |
abca927d JK |
215 | const char *argv[] = { NULL, NULL }; |
216 | FILE *fp; | |
217 | ||
abca927d JK |
218 | argv[0] = cmd; |
219 | helper.argv = argv; | |
220 | helper.use_shell = 1; | |
221 | helper.in = -1; | |
222 | if (want_output) | |
223 | helper.out = -1; | |
224 | else | |
225 | helper.no_stdout = 1; | |
226 | ||
227 | if (start_command(&helper) < 0) | |
228 | return -1; | |
229 | ||
230 | fp = xfdopen(helper.in, "w"); | |
a0d51e8d | 231 | sigchain_push(SIGPIPE, SIG_IGN); |
abca927d JK |
232 | credential_write(c, fp); |
233 | fclose(fp); | |
a0d51e8d | 234 | sigchain_pop(SIGPIPE); |
abca927d JK |
235 | |
236 | if (want_output) { | |
237 | int r; | |
238 | fp = xfdopen(helper.out, "r"); | |
239 | r = credential_read(c, fp); | |
240 | fclose(fp); | |
241 | if (r < 0) { | |
242 | finish_command(&helper); | |
243 | return -1; | |
244 | } | |
245 | } | |
246 | ||
247 | if (finish_command(&helper)) | |
248 | return -1; | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static int credential_do(struct credential *c, const char *helper, | |
253 | const char *operation) | |
254 | { | |
255 | struct strbuf cmd = STRBUF_INIT; | |
256 | int r; | |
257 | ||
258 | if (helper[0] == '!') | |
259 | strbuf_addstr(&cmd, helper + 1); | |
260 | else if (is_absolute_path(helper)) | |
261 | strbuf_addstr(&cmd, helper); | |
262 | else | |
263 | strbuf_addf(&cmd, "git credential-%s", helper); | |
264 | ||
265 | strbuf_addf(&cmd, " %s", operation); | |
266 | r = run_credential_helper(c, cmd.buf, !strcmp(operation, "get")); | |
267 | ||
268 | strbuf_release(&cmd); | |
269 | return r; | |
270 | } | |
271 | ||
272 | void credential_fill(struct credential *c) | |
273 | { | |
274 | int i; | |
275 | ||
276 | if (c->username && c->password) | |
277 | return; | |
278 | ||
11825072 JK |
279 | credential_apply_config(c); |
280 | ||
abca927d JK |
281 | for (i = 0; i < c->helpers.nr; i++) { |
282 | credential_do(c, c->helpers.items[i].string, "get"); | |
283 | if (c->username && c->password) | |
284 | return; | |
59b38652 JK |
285 | if (c->quit) |
286 | die("credential helper '%s' told us to quit", | |
287 | c->helpers.items[i].string); | |
abca927d JK |
288 | } |
289 | ||
290 | credential_getpass(c); | |
291 | if (!c->username && !c->password) | |
292 | die("unable to get password from user"); | |
293 | } | |
294 | ||
295 | void credential_approve(struct credential *c) | |
296 | { | |
297 | int i; | |
298 | ||
299 | if (c->approved) | |
300 | return; | |
301 | if (!c->username || !c->password) | |
302 | return; | |
303 | ||
11825072 JK |
304 | credential_apply_config(c); |
305 | ||
abca927d JK |
306 | for (i = 0; i < c->helpers.nr; i++) |
307 | credential_do(c, c->helpers.items[i].string, "store"); | |
308 | c->approved = 1; | |
309 | } | |
310 | ||
311 | void credential_reject(struct credential *c) | |
312 | { | |
313 | int i; | |
314 | ||
11825072 JK |
315 | credential_apply_config(c); |
316 | ||
abca927d JK |
317 | for (i = 0; i < c->helpers.nr; i++) |
318 | credential_do(c, c->helpers.items[i].string, "erase"); | |
319 | ||
88ce3ef6 ÆAB |
320 | FREE_AND_NULL(c->username); |
321 | FREE_AND_NULL(c->password); | |
abca927d JK |
322 | c->approved = 0; |
323 | } | |
d3e847c1 JK |
324 | |
325 | void credential_from_url(struct credential *c, const char *url) | |
326 | { | |
327 | const char *at, *colon, *cp, *slash, *host, *proto_end; | |
328 | ||
329 | credential_clear(c); | |
330 | ||
331 | /* | |
332 | * Match one of: | |
333 | * (1) proto://<host>/... | |
334 | * (2) proto://<user>@<host>/... | |
335 | * (3) proto://<user>:<pass>@<host>/... | |
336 | */ | |
337 | proto_end = strstr(url, "://"); | |
338 | if (!proto_end) | |
339 | return; | |
340 | cp = proto_end + 3; | |
341 | at = strchr(cp, '@'); | |
342 | colon = strchr(cp, ':'); | |
343 | slash = strchrnul(cp, '/'); | |
344 | ||
345 | if (!at || slash <= at) { | |
346 | /* Case (1) */ | |
347 | host = cp; | |
348 | } | |
349 | else if (!colon || at <= colon) { | |
350 | /* Case (2) */ | |
351 | c->username = url_decode_mem(cp, at - cp); | |
352 | host = at + 1; | |
353 | } else { | |
354 | /* Case (3) */ | |
355 | c->username = url_decode_mem(cp, colon - cp); | |
356 | c->password = url_decode_mem(colon + 1, at - (colon + 1)); | |
357 | host = at + 1; | |
358 | } | |
359 | ||
360 | if (proto_end - url > 0) | |
361 | c->protocol = xmemdupz(url, proto_end - url); | |
362 | if (slash - host > 0) | |
363 | c->host = url_decode_mem(host, slash - host); | |
364 | /* Trim leading and trailing slashes from path */ | |
365 | while (*slash == '/') | |
366 | slash++; | |
367 | if (*slash) { | |
368 | char *p; | |
369 | c->path = url_decode(slash); | |
370 | p = c->path + strlen(c->path) - 1; | |
371 | while (p > c->path && *p == '/') | |
372 | *p-- = '\0'; | |
373 | } | |
374 | } |