3 #include "credential.h"
4 #include "string-list.h"
5 #include "run-command.h"
10 void credential_init(struct credential *c)
12 memset(c, 0, sizeof(*c));
13 c->helpers.strdup_strings = 1;
16 void credential_clear(struct credential *c)
23 string_list_clear(&c->helpers, 0);
28 int credential_match(const struct credential *want,
29 const struct credential *have)
31 #define CHECK(x) (!want->x || (have->x && !strcmp(want->x, have->x)))
32 return CHECK(protocol) &&
39 static int credential_config_callback(const char *var, const char *value,
42 struct credential *c = data;
43 const char *key, *dot;
45 if (!skip_prefix(var, "credential.", &key))
49 return config_error_nonbool(var);
51 dot = strrchr(key, '.');
53 struct credential want = CREDENTIAL_INIT;
54 char *url = xmemdupz(key, dot - key);
57 credential_from_url(&want, url);
58 matched = credential_match(&want, c);
60 credential_clear(&want);
68 if (!strcmp(key, "helper")) {
70 string_list_append(&c->helpers, value);
72 string_list_clear(&c->helpers, 0);
73 } else if (!strcmp(key, "username")) {
75 c->username = xstrdup(value);
77 else if (!strcmp(key, "usehttppath"))
78 c->use_http_path = git_config_bool(var, value);
83 static int proto_is_http(const char *s)
87 return !strcmp(s, "https") || !strcmp(s, "http");
90 static void credential_apply_config(struct credential *c)
94 git_config(credential_config_callback, c);
97 if (!c->use_http_path && proto_is_http(c->protocol)) {
98 FREE_AND_NULL(c->path);
102 static void credential_describe(struct credential *c, struct strbuf *out)
106 strbuf_addf(out, "%s://", c->protocol);
107 if (c->username && *c->username)
108 strbuf_addf(out, "%s@", c->username);
110 strbuf_addstr(out, c->host);
112 strbuf_addf(out, "/%s", c->path);
115 static char *credential_ask_one(const char *what, struct credential *c,
118 struct strbuf desc = STRBUF_INIT;
119 struct strbuf prompt = STRBUF_INIT;
122 credential_describe(c, &desc);
124 strbuf_addf(&prompt, "%s for '%s': ", what, desc.buf);
126 strbuf_addf(&prompt, "%s: ", what);
128 r = git_prompt(prompt.buf, flags);
130 strbuf_release(&desc);
131 strbuf_release(&prompt);
135 static void credential_getpass(struct credential *c)
138 c->username = credential_ask_one("Username", c,
139 PROMPT_ASKPASS|PROMPT_ECHO);
141 c->password = credential_ask_one("Password", c,
145 int credential_read(struct credential *c, FILE *fp)
147 struct strbuf line = STRBUF_INIT;
149 while (strbuf_getline_lf(&line, fp) != EOF) {
150 char *key = line.buf;
151 char *value = strchr(key, '=');
157 warning("invalid credential line: %s", key);
158 strbuf_release(&line);
163 if (!strcmp(key, "username")) {
165 c->username = xstrdup(value);
166 } else if (!strcmp(key, "password")) {
168 c->password = xstrdup(value);
169 } else if (!strcmp(key, "protocol")) {
171 c->protocol = xstrdup(value);
172 } else if (!strcmp(key, "host")) {
174 c->host = xstrdup(value);
175 } else if (!strcmp(key, "path")) {
177 c->path = xstrdup(value);
178 } else if (!strcmp(key, "url")) {
179 credential_from_url(c, value);
180 } else if (!strcmp(key, "quit")) {
181 c->quit = !!git_config_bool("quit", value);
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.
190 strbuf_release(&line);
194 static void credential_write_item(FILE *fp, const char *key, const char *value)
198 if (strchr(value, '\n'))
199 die("credential value for %s contains newline", key);
200 fprintf(fp, "%s=%s\n", key, value);
203 void credential_write(const struct credential *c, FILE *fp)
205 credential_write_item(fp, "protocol", c->protocol);
206 credential_write_item(fp, "host", c->host);
207 credential_write_item(fp, "path", c->path);
208 credential_write_item(fp, "username", c->username);
209 credential_write_item(fp, "password", c->password);
212 static int run_credential_helper(struct credential *c,
216 struct child_process helper = CHILD_PROCESS_INIT;
217 const char *argv[] = { NULL, NULL };
222 helper.use_shell = 1;
227 helper.no_stdout = 1;
229 if (start_command(&helper) < 0)
232 fp = xfdopen(helper.in, "w");
233 sigchain_push(SIGPIPE, SIG_IGN);
234 credential_write(c, fp);
236 sigchain_pop(SIGPIPE);
240 fp = xfdopen(helper.out, "r");
241 r = credential_read(c, fp);
244 finish_command(&helper);
249 if (finish_command(&helper))
254 static int credential_do(struct credential *c, const char *helper,
255 const char *operation)
257 struct strbuf cmd = STRBUF_INIT;
260 if (helper[0] == '!')
261 strbuf_addstr(&cmd, helper + 1);
262 else if (is_absolute_path(helper))
263 strbuf_addstr(&cmd, helper);
265 strbuf_addf(&cmd, "git credential-%s", helper);
267 strbuf_addf(&cmd, " %s", operation);
268 r = run_credential_helper(c, cmd.buf, !strcmp(operation, "get"));
270 strbuf_release(&cmd);
274 void credential_fill(struct credential *c)
278 if (c->username && c->password)
281 credential_apply_config(c);
283 for (i = 0; i < c->helpers.nr; i++) {
284 credential_do(c, c->helpers.items[i].string, "get");
285 if (c->username && c->password)
288 die("credential helper '%s' told us to quit",
289 c->helpers.items[i].string);
292 credential_getpass(c);
293 if (!c->username && !c->password)
294 die("unable to get password from user");
297 void credential_approve(struct credential *c)
303 if (!c->username || !c->password)
306 credential_apply_config(c);
308 for (i = 0; i < c->helpers.nr; i++)
309 credential_do(c, c->helpers.items[i].string, "store");
313 void credential_reject(struct credential *c)
317 credential_apply_config(c);
319 for (i = 0; i < c->helpers.nr; i++)
320 credential_do(c, c->helpers.items[i].string, "erase");
322 FREE_AND_NULL(c->username);
323 FREE_AND_NULL(c->password);
327 static int check_url_component(const char *url, int quiet,
328 const char *name, const char *value)
332 if (!strchr(value, '\n'))
336 warning(_("url contains a newline in its %s component: %s"),
341 int credential_from_url_gently(struct credential *c, const char *url,
344 const char *at, *colon, *cp, *slash, *host, *proto_end;
350 * (1) proto://<host>/...
351 * (2) proto://<user>@<host>/...
352 * (3) proto://<user>:<pass>@<host>/...
354 proto_end = strstr(url, "://");
358 at = strchr(cp, '@');
359 colon = strchr(cp, ':');
360 slash = strchrnul(cp, '/');
362 if (!at || slash <= at) {
366 else if (!colon || at <= colon) {
368 c->username = url_decode_mem(cp, at - cp);
372 c->username = url_decode_mem(cp, colon - cp);
373 c->password = url_decode_mem(colon + 1, at - (colon + 1));
377 if (proto_end - url > 0)
378 c->protocol = xmemdupz(url, proto_end - url);
379 if (slash - host > 0)
380 c->host = url_decode_mem(host, slash - host);
381 /* Trim leading and trailing slashes from path */
382 while (*slash == '/')
386 c->path = url_decode(slash);
387 p = c->path + strlen(c->path) - 1;
388 while (p > c->path && *p == '/')
392 if (check_url_component(url, quiet, "username", c->username) < 0 ||
393 check_url_component(url, quiet, "password", c->password) < 0 ||
394 check_url_component(url, quiet, "protocol", c->protocol) < 0 ||
395 check_url_component(url, quiet, "host", c->host) < 0 ||
396 check_url_component(url, quiet, "path", c->path) < 0)
402 void credential_from_url(struct credential *c, const char *url)
404 if (credential_from_url_gently(c, url, 0) < 0) {
405 warning(_("skipping credential lookup for url: %s"), url);