diff options
Diffstat (limited to 'third_party/git/credential.c')
-rw-r--r-- | third_party/git/credential.c | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/third_party/git/credential.c b/third_party/git/credential.c deleted file mode 100644 index 62be651b03..0000000000 --- a/third_party/git/credential.c +++ /dev/null @@ -1,374 +0,0 @@ -#include "cache.h" -#include "config.h" -#include "credential.h" -#include "string-list.h" -#include "run-command.h" -#include "url.h" -#include "prompt.h" -#include "sigchain.h" - -void credential_init(struct credential *c) -{ - memset(c, 0, sizeof(*c)); - c->helpers.strdup_strings = 1; -} - -void credential_clear(struct credential *c) -{ - free(c->protocol); - free(c->host); - free(c->path); - free(c->username); - free(c->password); - string_list_clear(&c->helpers, 0); - - credential_init(c); -} - -int credential_match(const struct credential *want, - const struct credential *have) -{ -#define CHECK(x) (!want->x || (have->x && !strcmp(want->x, have->x))) - return CHECK(protocol) && - CHECK(host) && - CHECK(path) && - CHECK(username); -#undef CHECK -} - -static int credential_config_callback(const char *var, const char *value, - void *data) -{ - struct credential *c = data; - const char *key, *dot; - - if (!skip_prefix(var, "credential.", &key)) - return 0; - - if (!value) - return config_error_nonbool(var); - - dot = strrchr(key, '.'); - if (dot) { - struct credential want = CREDENTIAL_INIT; - char *url = xmemdupz(key, dot - key); - int matched; - - credential_from_url(&want, url); - matched = credential_match(&want, c); - - credential_clear(&want); - free(url); - - if (!matched) - return 0; - key = dot + 1; - } - - if (!strcmp(key, "helper")) { - if (*value) - string_list_append(&c->helpers, value); - else - string_list_clear(&c->helpers, 0); - } else if (!strcmp(key, "username")) { - if (!c->username) - c->username = xstrdup(value); - } - else if (!strcmp(key, "usehttppath")) - c->use_http_path = git_config_bool(var, value); - - return 0; -} - -static int proto_is_http(const char *s) -{ - if (!s) - return 0; - return !strcmp(s, "https") || !strcmp(s, "http"); -} - -static void credential_apply_config(struct credential *c) -{ - if (c->configured) - return; - git_config(credential_config_callback, c); - c->configured = 1; - - if (!c->use_http_path && proto_is_http(c->protocol)) { - FREE_AND_NULL(c->path); - } -} - -static void credential_describe(struct credential *c, struct strbuf *out) -{ - if (!c->protocol) - return; - strbuf_addf(out, "%s://", c->protocol); - if (c->username && *c->username) - strbuf_addf(out, "%s@", c->username); - if (c->host) - strbuf_addstr(out, c->host); - if (c->path) - strbuf_addf(out, "/%s", c->path); -} - -static char *credential_ask_one(const char *what, struct credential *c, - int flags) -{ - struct strbuf desc = STRBUF_INIT; - struct strbuf prompt = STRBUF_INIT; - char *r; - - credential_describe(c, &desc); - if (desc.len) - strbuf_addf(&prompt, "%s for '%s': ", what, desc.buf); - else - strbuf_addf(&prompt, "%s: ", what); - - r = git_prompt(prompt.buf, flags); - - strbuf_release(&desc); - strbuf_release(&prompt); - return xstrdup(r); -} - -static void credential_getpass(struct credential *c) -{ - if (!c->username) - c->username = credential_ask_one("Username", c, - PROMPT_ASKPASS|PROMPT_ECHO); - if (!c->password) - c->password = credential_ask_one("Password", c, - PROMPT_ASKPASS); -} - -int credential_read(struct credential *c, FILE *fp) -{ - struct strbuf line = STRBUF_INIT; - - while (strbuf_getline_lf(&line, fp) != EOF) { - char *key = line.buf; - char *value = strchr(key, '='); - - if (!line.len) - break; - - if (!value) { - warning("invalid credential line: %s", key); - strbuf_release(&line); - return -1; - } - *value++ = '\0'; - - if (!strcmp(key, "username")) { - free(c->username); - c->username = xstrdup(value); - } else if (!strcmp(key, "password")) { - free(c->password); - c->password = xstrdup(value); - } else if (!strcmp(key, "protocol")) { - free(c->protocol); - c->protocol = xstrdup(value); - } else if (!strcmp(key, "host")) { - free(c->host); - c->host = xstrdup(value); - } else if (!strcmp(key, "path")) { - free(c->path); - c->path = xstrdup(value); - } else if (!strcmp(key, "url")) { - credential_from_url(c, value); - } else if (!strcmp(key, "quit")) { - c->quit = !!git_config_bool("quit", value); - } - /* - * Ignore other lines; we don't know what they mean, but - * this future-proofs us when later versions of git do - * learn new lines, and the helpers are updated to match. - */ - } - - strbuf_release(&line); - return 0; -} - -static void credential_write_item(FILE *fp, const char *key, const char *value) -{ - if (!value) - return; - fprintf(fp, "%s=%s\n", key, value); -} - -void credential_write(const struct credential *c, FILE *fp) -{ - credential_write_item(fp, "protocol", c->protocol); - credential_write_item(fp, "host", c->host); - credential_write_item(fp, "path", c->path); - credential_write_item(fp, "username", c->username); - credential_write_item(fp, "password", c->password); -} - -static int run_credential_helper(struct credential *c, - const char *cmd, - int want_output) -{ - struct child_process helper = CHILD_PROCESS_INIT; - const char *argv[] = { NULL, NULL }; - FILE *fp; - - argv[0] = cmd; - helper.argv = argv; - helper.use_shell = 1; - helper.in = -1; - if (want_output) - helper.out = -1; - else - helper.no_stdout = 1; - - if (start_command(&helper) < 0) - return -1; - - fp = xfdopen(helper.in, "w"); - sigchain_push(SIGPIPE, SIG_IGN); - credential_write(c, fp); - fclose(fp); - sigchain_pop(SIGPIPE); - - if (want_output) { - int r; - fp = xfdopen(helper.out, "r"); - r = credential_read(c, fp); - fclose(fp); - if (r < 0) { - finish_command(&helper); - return -1; - } - } - - if (finish_command(&helper)) - return -1; - return 0; -} - -static int credential_do(struct credential *c, const char *helper, - const char *operation) -{ - struct strbuf cmd = STRBUF_INIT; - int r; - - if (helper[0] == '!') - strbuf_addstr(&cmd, helper + 1); - else if (is_absolute_path(helper)) - strbuf_addstr(&cmd, helper); - else - strbuf_addf(&cmd, "git credential-%s", helper); - - strbuf_addf(&cmd, " %s", operation); - r = run_credential_helper(c, cmd.buf, !strcmp(operation, "get")); - - strbuf_release(&cmd); - return r; -} - -void credential_fill(struct credential *c) -{ - int i; - - if (c->username && c->password) - return; - - credential_apply_config(c); - - for (i = 0; i < c->helpers.nr; i++) { - credential_do(c, c->helpers.items[i].string, "get"); - if (c->username && c->password) - return; - if (c->quit) - die("credential helper '%s' told us to quit", - c->helpers.items[i].string); - } - - credential_getpass(c); - if (!c->username && !c->password) - die("unable to get password from user"); -} - -void credential_approve(struct credential *c) -{ - int i; - - if (c->approved) - return; - if (!c->username || !c->password) - return; - - credential_apply_config(c); - - for (i = 0; i < c->helpers.nr; i++) - credential_do(c, c->helpers.items[i].string, "store"); - c->approved = 1; -} - -void credential_reject(struct credential *c) -{ - int i; - - credential_apply_config(c); - - for (i = 0; i < c->helpers.nr; i++) - credential_do(c, c->helpers.items[i].string, "erase"); - - FREE_AND_NULL(c->username); - FREE_AND_NULL(c->password); - c->approved = 0; -} - -void credential_from_url(struct credential *c, const char *url) -{ - const char *at, *colon, *cp, *slash, *host, *proto_end; - - credential_clear(c); - - /* - * Match one of: - * (1) proto://<host>/... - * (2) proto://<user>@<host>/... - * (3) proto://<user>:<pass>@<host>/... - */ - proto_end = strstr(url, "://"); - if (!proto_end) - return; - cp = proto_end + 3; - at = strchr(cp, '@'); - colon = strchr(cp, ':'); - slash = strchrnul(cp, '/'); - - if (!at || slash <= at) { - /* Case (1) */ - host = cp; - } - else if (!colon || at <= colon) { - /* Case (2) */ - c->username = url_decode_mem(cp, at - cp); - host = at + 1; - } else { - /* Case (3) */ - c->username = url_decode_mem(cp, colon - cp); - c->password = url_decode_mem(colon + 1, at - (colon + 1)); - host = at + 1; - } - - if (proto_end - url > 0) - c->protocol = xmemdupz(url, proto_end - url); - if (slash - host > 0) - c->host = url_decode_mem(host, slash - host); - /* Trim leading and trailing slashes from path */ - while (*slash == '/') - slash++; - if (*slash) { - char *p; - c->path = url_decode(slash); - p = c->path + strlen(c->path) - 1; - while (p > c->path && *p == '/') - *p-- = '\0'; - } -} |