+++ /dev/null
-/*
- * Copyright (C) 2011 John Szakmeister <john@szakmeister.net>
- * 2012 Philipp A. Hartmann <pah@qo.cx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * Credits:
- * - GNOME Keyring API handling originally written by John Szakmeister
- * - ported to credential helper API by Philipp A. Hartmann
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <glib.h>
-#include <gnome-keyring.h>
-
-#ifdef GNOME_KEYRING_DEFAULT
-
- /* Modern gnome-keyring */
-
-#include <gnome-keyring-memory.h>
-
-#else
-
- /*
- * Support ancient gnome-keyring, circ. RHEL 5.X.
- * GNOME_KEYRING_DEFAULT seems to have been introduced with Gnome 2.22,
- * and the other features roughly around Gnome 2.20, 6 months before.
- * Ubuntu 8.04 used Gnome 2.22 (I think). Not sure any distro used 2.20.
- * So the existence/non-existence of GNOME_KEYRING_DEFAULT seems like
- * a decent thing to use as an indicator.
- */
-
-#define GNOME_KEYRING_DEFAULT NULL
-
-/*
- * ancient gnome-keyring returns DENIED when an entry is not found.
- * Setting NO_MATCH to DENIED will prevent us from reporting DENIED
- * errors during get and erase operations, but we will still report
- * DENIED errors during a store.
- */
-#define GNOME_KEYRING_RESULT_NO_MATCH GNOME_KEYRING_RESULT_DENIED
-
-#define gnome_keyring_memory_alloc g_malloc
-#define gnome_keyring_memory_free gnome_keyring_free_password
-#define gnome_keyring_memory_strdup g_strdup
-
-static const char *gnome_keyring_result_to_message(GnomeKeyringResult result)
-{
- switch (result) {
- case GNOME_KEYRING_RESULT_OK:
- return "OK";
- case GNOME_KEYRING_RESULT_DENIED:
- return "Denied";
- case GNOME_KEYRING_RESULT_NO_KEYRING_DAEMON:
- return "No Keyring Daemon";
- case GNOME_KEYRING_RESULT_ALREADY_UNLOCKED:
- return "Already UnLocked";
- case GNOME_KEYRING_RESULT_NO_SUCH_KEYRING:
- return "No Such Keyring";
- case GNOME_KEYRING_RESULT_BAD_ARGUMENTS:
- return "Bad Arguments";
- case GNOME_KEYRING_RESULT_IO_ERROR:
- return "IO Error";
- case GNOME_KEYRING_RESULT_CANCELLED:
- return "Cancelled";
- case GNOME_KEYRING_RESULT_ALREADY_EXISTS:
- return "Already Exists";
- default:
- return "Unknown Error";
- }
-}
-
-/*
- * Support really ancient gnome-keyring, circ. RHEL 4.X.
- * Just a guess for the Glib version. Glib 2.8 was roughly Gnome 2.12 ?
- * Which was released with gnome-keyring 0.4.3 ??
- */
-#if GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION < 8
-
-static void gnome_keyring_done_cb(GnomeKeyringResult result, gpointer user_data)
-{
- gpointer *data = (gpointer *)user_data;
- int *done = (int *)data[0];
- GnomeKeyringResult *r = (GnomeKeyringResult *)data[1];
-
- *r = result;
- *done = 1;
-}
-
-static void wait_for_request_completion(int *done)
-{
- GMainContext *mc = g_main_context_default();
- while (!*done)
- g_main_context_iteration(mc, TRUE);
-}
-
-static GnomeKeyringResult gnome_keyring_item_delete_sync(const char *keyring, guint32 id)
-{
- int done = 0;
- GnomeKeyringResult result;
- gpointer data[] = { &done, &result };
-
- gnome_keyring_item_delete(keyring, id, gnome_keyring_done_cb, data,
- NULL);
-
- wait_for_request_completion(&done);
-
- return result;
-}
-
-#endif
-#endif
-
-/*
- * This credential struct and API is simplified from git's credential.{h,c}
- */
-struct credential {
- char *protocol;
- char *host;
- unsigned short port;
- char *path;
- char *username;
- char *password;
-};
-
-#define CREDENTIAL_INIT { 0 }
-
-typedef int (*credential_op_cb)(struct credential *);
-
-struct credential_operation {
- char *name;
- credential_op_cb op;
-};
-
-#define CREDENTIAL_OP_END { NULL, NULL }
-
-/* ----------------- GNOME Keyring functions ----------------- */
-
-/* create a special keyring option string, if path is given */
-static char *keyring_object(struct credential *c)
-{
- if (!c->path)
- return NULL;
-
- if (c->port)
- return g_strdup_printf("%s:%hd/%s", c->host, c->port, c->path);
-
- return g_strdup_printf("%s/%s", c->host, c->path);
-}
-
-static int keyring_get(struct credential *c)
-{
- char *object = NULL;
- GList *entries;
- GnomeKeyringNetworkPasswordData *password_data;
- GnomeKeyringResult result;
-
- if (!c->protocol || !(c->host || c->path))
- return EXIT_FAILURE;
-
- object = keyring_object(c);
-
- result = gnome_keyring_find_network_password_sync(
- c->username,
- NULL /* domain */,
- c->host,
- object,
- c->protocol,
- NULL /* authtype */,
- c->port,
- &entries);
-
- g_free(object);
-
- if (result == GNOME_KEYRING_RESULT_NO_MATCH)
- return EXIT_SUCCESS;
-
- if (result == GNOME_KEYRING_RESULT_CANCELLED)
- return EXIT_SUCCESS;
-
- if (result != GNOME_KEYRING_RESULT_OK) {
- g_critical("%s", gnome_keyring_result_to_message(result));
- return EXIT_FAILURE;
- }
-
- /* pick the first one from the list */
- password_data = (GnomeKeyringNetworkPasswordData *)entries->data;
-
- gnome_keyring_memory_free(c->password);
- c->password = gnome_keyring_memory_strdup(password_data->password);
-
- if (!c->username)
- c->username = g_strdup(password_data->user);
-
- gnome_keyring_network_password_list_free(entries);
-
- return EXIT_SUCCESS;
-}
-
-
-static int keyring_store(struct credential *c)
-{
- guint32 item_id;
- char *object = NULL;
- GnomeKeyringResult result;
-
- /*
- * Sanity check that what we are storing is actually sensible.
- * In particular, we can't make a URL without a protocol field.
- * Without either a host or pathname (depending on the scheme),
- * we have no primary key. And without a username and password,
- * we are not actually storing a credential.
- */
- if (!c->protocol || !(c->host || c->path) ||
- !c->username || !c->password)
- return EXIT_FAILURE;
-
- object = keyring_object(c);
-
- result = gnome_keyring_set_network_password_sync(
- GNOME_KEYRING_DEFAULT,
- c->username,
- NULL /* domain */,
- c->host,
- object,
- c->protocol,
- NULL /* authtype */,
- c->port,
- c->password,
- &item_id);
-
- g_free(object);
-
- if (result != GNOME_KEYRING_RESULT_OK &&
- result != GNOME_KEYRING_RESULT_CANCELLED) {
- g_critical("%s", gnome_keyring_result_to_message(result));
- return EXIT_FAILURE;
- }
-
- return EXIT_SUCCESS;
-}
-
-static int keyring_erase(struct credential *c)
-{
- char *object = NULL;
- GList *entries;
- GnomeKeyringNetworkPasswordData *password_data;
- GnomeKeyringResult result;
-
- /*
- * Sanity check that we actually have something to match
- * against. The input we get is a restrictive pattern,
- * so technically a blank credential means "erase everything".
- * But it is too easy to accidentally send this, since it is equivalent
- * to empty input. So explicitly disallow it, and require that the
- * pattern have some actual content to match.
- */
- if (!c->protocol && !c->host && !c->path && !c->username)
- return EXIT_FAILURE;
-
- object = keyring_object(c);
-
- result = gnome_keyring_find_network_password_sync(
- c->username,
- NULL /* domain */,
- c->host,
- object,
- c->protocol,
- NULL /* authtype */,
- c->port,
- &entries);
-
- g_free(object);
-
- if (result == GNOME_KEYRING_RESULT_NO_MATCH)
- return EXIT_SUCCESS;
-
- if (result == GNOME_KEYRING_RESULT_CANCELLED)
- return EXIT_SUCCESS;
-
- if (result != GNOME_KEYRING_RESULT_OK) {
- g_critical("%s", gnome_keyring_result_to_message(result));
- return EXIT_FAILURE;
- }
-
- /* pick the first one from the list (delete all matches?) */
- password_data = (GnomeKeyringNetworkPasswordData *)entries->data;
-
- result = gnome_keyring_item_delete_sync(
- password_data->keyring, password_data->item_id);
-
- gnome_keyring_network_password_list_free(entries);
-
- if (result != GNOME_KEYRING_RESULT_OK) {
- g_critical("%s", gnome_keyring_result_to_message(result));
- return EXIT_FAILURE;
- }
-
- return EXIT_SUCCESS;
-}
-
-/*
- * Table with helper operation callbacks, used by generic
- * credential helper main function.
- */
-static struct credential_operation const credential_helper_ops[] = {
- { "get", keyring_get },
- { "store", keyring_store },
- { "erase", keyring_erase },
- CREDENTIAL_OP_END
-};
-
-/* ------------------ credential functions ------------------ */
-
-static void credential_init(struct credential *c)
-{
- memset(c, 0, sizeof(*c));
-}
-
-static void credential_clear(struct credential *c)
-{
- g_free(c->protocol);
- g_free(c->host);
- g_free(c->path);
- g_free(c->username);
- gnome_keyring_memory_free(c->password);
-
- credential_init(c);
-}
-
-static int credential_read(struct credential *c)
-{
- char *buf;
- size_t line_len;
- char *key;
- char *value;
-
- key = buf = gnome_keyring_memory_alloc(1024);
-
- while (fgets(buf, 1024, stdin)) {
- line_len = strlen(buf);
-
- if (line_len && buf[line_len-1] == '\n')
- buf[--line_len] = '\0';
-
- if (!line_len)
- break;
-
- value = strchr(buf, '=');
- if (!value) {
- g_warning("invalid credential line: %s", key);
- gnome_keyring_memory_free(buf);
- return -1;
- }
- *value++ = '\0';
-
- if (!strcmp(key, "protocol")) {
- g_free(c->protocol);
- c->protocol = g_strdup(value);
- } else if (!strcmp(key, "host")) {
- g_free(c->host);
- c->host = g_strdup(value);
- value = strrchr(c->host, ':');
- if (value) {
- *value++ = '\0';
- c->port = atoi(value);
- }
- } else if (!strcmp(key, "path")) {
- g_free(c->path);
- c->path = g_strdup(value);
- } else if (!strcmp(key, "username")) {
- g_free(c->username);
- c->username = g_strdup(value);
- } else if (!strcmp(key, "password")) {
- gnome_keyring_memory_free(c->password);
- c->password = gnome_keyring_memory_strdup(value);
- while (*value)
- *value++ = '\0';
- }
- /*
- * 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.
- */
- }
-
- gnome_keyring_memory_free(buf);
-
- 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);
-}
-
-static void credential_write(const struct credential *c)
-{
- /* only write username/password, if set */
- credential_write_item(stdout, "username", c->username);
- credential_write_item(stdout, "password", c->password);
-}
-
-static void usage(const char *name)
-{
- struct credential_operation const *try_op = credential_helper_ops;
- const char *basename = strrchr(name, '/');
-
- basename = (basename) ? basename + 1 : name;
- fprintf(stderr, "usage: %s <", basename);
- while (try_op->name) {
- fprintf(stderr, "%s", (try_op++)->name);
- if (try_op->name)
- fprintf(stderr, "%s", "|");
- }
- fprintf(stderr, "%s", ">\n");
-}
-
-int main(int argc, char *argv[])
-{
- int ret = EXIT_SUCCESS;
-
- struct credential_operation const *try_op = credential_helper_ops;
- struct credential cred = CREDENTIAL_INIT;
-
- if (!argv[1]) {
- usage(argv[0]);
- exit(EXIT_FAILURE);
- }
-
- g_set_application_name("Git Credential Helper");
-
- /* lookup operation callback */
- while (try_op->name && strcmp(argv[1], try_op->name))
- try_op++;
-
- /* unsupported operation given -- ignore silently */
- if (!try_op->name || !try_op->op)
- goto out;
-
- ret = credential_read(&cred);
- if (ret)
- goto out;
-
- /* perform credential operation */
- ret = (*try_op->op)(&cred);
-
- credential_write(&cred);
-
-out:
- credential_clear(&cred);
- return ret;
-}
projects / thirdparty / git.git / commitdiff
