3 #include "credential.h"
4 #include "string-list.h"
5 #include "run-command.h"
9 void credential_init(struct credential *c)
11 memset(c, 0, sizeof(*c));
12 c->helpers.strdup_strings = 1;
15 void credential_clear(struct credential *c)
22 string_list_clear(&c->helpers, 0);
27 int credential_match(const struct credential *want,
28 const struct credential *have)
30 #define CHECK(x) (!want->x || (have->x && !strcmp(want->x, have->x)))
31 return CHECK(protocol) &&
38 static int credential_config_callback(const char *var, const char *value,
41 struct credential *c = data;
42 const char *key, *dot;
44 if (!skip_prefix(var, "credential.", &key))
48 return config_error_nonbool(var);
50 dot = strrchr(key, '.');
52 struct credential want = CREDENTIAL_INIT;
53 char *url = xmemdupz(key, dot - key);
56 credential_from_url(&want, url);
57 matched = credential_match(&want, c);
59 credential_clear(&want);
67 if (!strcmp(key, "helper")) {
69 string_list_append(&c->helpers, value);
71 string_list_clear(&c->helpers, 0);
72 } else if (!strcmp(key, "username")) {
74 c->username = xstrdup(value);
76 else if (!strcmp(key, "usehttppath"))
77 c->use_http_path = git_config_bool(var, value);
82 static int proto_is_http(const char *s)
86 return !strcmp(s, "https") || !strcmp(s, "http");
89 static void credential_apply_config(struct credential *c)
93 git_config(credential_config_callback, c);
96 if (!c->use_http_path && proto_is_http(c->protocol)) {
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 fprintf(fp, "%s=%s\n", key, value);
201 void credential_write(const struct credential *c, FILE *fp)
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);
210 static int run_credential_helper(struct credential *c,
214 struct child_process helper = CHILD_PROCESS_INIT;
215 const char *argv[] = { NULL, NULL };
220 helper.use_shell = 1;
225 helper.no_stdout = 1;
227 if (start_command(&helper) < 0)
230 fp = xfdopen(helper.in, "w");
231 credential_write(c, fp);
236 fp = xfdopen(helper.out, "r");
237 r = credential_read(c, fp);
240 finish_command(&helper);
245 if (finish_command(&helper))
250 static int credential_do(struct credential *c, const char *helper,
251 const char *operation)
253 struct strbuf cmd = STRBUF_INIT;
256 if (helper[0] == '!')
257 strbuf_addstr(&cmd, helper + 1);
258 else if (is_absolute_path(helper))
259 strbuf_addstr(&cmd, helper);
261 strbuf_addf(&cmd, "git credential-%s", helper);
263 strbuf_addf(&cmd, " %s", operation);
264 r = run_credential_helper(c, cmd.buf, !strcmp(operation, "get"));
266 strbuf_release(&cmd);
270 void credential_fill(struct credential *c)
274 if (c->username && c->password)
277 credential_apply_config(c);
279 for (i = 0; i < c->helpers.nr; i++) {
280 credential_do(c, c->helpers.items[i].string, "get");
281 if (c->username && c->password)
284 die("credential helper '%s' told us to quit",
285 c->helpers.items[i].string);
288 credential_getpass(c);
289 if (!c->username && !c->password)
290 die("unable to get password from user");
293 void credential_approve(struct credential *c)
299 if (!c->username || !c->password)
302 credential_apply_config(c);
304 for (i = 0; i < c->helpers.nr; i++)
305 credential_do(c, c->helpers.items[i].string, "store");
309 void credential_reject(struct credential *c)
313 credential_apply_config(c);
315 for (i = 0; i < c->helpers.nr; i++)
316 credential_do(c, c->helpers.items[i].string, "erase");
325 void credential_from_url(struct credential *c, const char *url)
327 const char *at, *colon, *cp, *slash, *host, *proto_end;
333 * (1) proto://<host>/...
334 * (2) proto://<user>@<host>/...
335 * (3) proto://<user>:<pass>@<host>/...
337 proto_end = strstr(url, "://");
341 at = strchr(cp, '@');
342 colon = strchr(cp, ':');
343 slash = strchrnul(cp, '/');
345 if (!at || slash <= at) {
349 else if (!colon || at <= colon) {
351 c->username = url_decode_mem(cp, at - cp);
355 c->username = url_decode_mem(cp, colon - cp);
356 c->password = url_decode_mem(colon + 1, at - (colon + 1));
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 == '/')
369 c->path = url_decode(slash);
370 p = c->path + strlen(c->path) - 1;
371 while (p > c->path && *p == '/')