about summary refs log tree commit diff
path: root/third_party/git/credential-cache--daemon.c
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/git/credential-cache--daemon.c')
-rw-r--r--third_party/git/credential-cache--daemon.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/third_party/git/credential-cache--daemon.c b/third_party/git/credential-cache--daemon.c
deleted file mode 100644
index ec1271f89c..0000000000
--- a/third_party/git/credential-cache--daemon.c
+++ /dev/null
@@ -1,297 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "tempfile.h"
-#include "credential.h"
-#include "unix-socket.h"
-#include "parse-options.h"
-
-struct credential_cache_entry {
-	struct credential item;
-	timestamp_t expiration;
-};
-static struct credential_cache_entry *entries;
-static int entries_nr;
-static int entries_alloc;
-
-static void cache_credential(struct credential *c, int timeout)
-{
-	struct credential_cache_entry *e;
-
-	ALLOC_GROW(entries, entries_nr + 1, entries_alloc);
-	e = &entries[entries_nr++];
-
-	/* take ownership of pointers */
-	memcpy(&e->item, c, sizeof(*c));
-	memset(c, 0, sizeof(*c));
-	e->expiration = time(NULL) + timeout;
-}
-
-static struct credential_cache_entry *lookup_credential(const struct credential *c)
-{
-	int i;
-	for (i = 0; i < entries_nr; i++) {
-		struct credential *e = &entries[i].item;
-		if (credential_match(c, e))
-			return &entries[i];
-	}
-	return NULL;
-}
-
-static void remove_credential(const struct credential *c)
-{
-	struct credential_cache_entry *e;
-
-	e = lookup_credential(c);
-	if (e)
-		e->expiration = 0;
-}
-
-static timestamp_t check_expirations(void)
-{
-	static timestamp_t wait_for_entry_until;
-	int i = 0;
-	timestamp_t now = time(NULL);
-	timestamp_t next = TIME_MAX;
-
-	/*
-	 * Initially give the client 30 seconds to actually contact us
-	 * and store a credential before we decide there's no point in
-	 * keeping the daemon around.
-	 */
-	if (!wait_for_entry_until)
-		wait_for_entry_until = now + 30;
-
-	while (i < entries_nr) {
-		if (entries[i].expiration <= now) {
-			entries_nr--;
-			credential_clear(&entries[i].item);
-			if (i != entries_nr)
-				memcpy(&entries[i], &entries[entries_nr], sizeof(*entries));
-			/*
-			 * Stick around 30 seconds in case a new credential
-			 * shows up (e.g., because we just removed a failed
-			 * one, and we will soon get the correct one).
-			 */
-			wait_for_entry_until = now + 30;
-		}
-		else {
-			if (entries[i].expiration < next)
-				next = entries[i].expiration;
-			i++;
-		}
-	}
-
-	if (!entries_nr) {
-		if (wait_for_entry_until <= now)
-			return 0;
-		next = wait_for_entry_until;
-	}
-
-	return next - now;
-}
-
-static int read_request(FILE *fh, struct credential *c,
-			struct strbuf *action, int *timeout)
-{
-	static struct strbuf item = STRBUF_INIT;
-	const char *p;
-
-	strbuf_getline_lf(&item, fh);
-	if (!skip_prefix(item.buf, "action=", &p))
-		return error("client sent bogus action line: %s", item.buf);
-	strbuf_addstr(action, p);
-
-	strbuf_getline_lf(&item, fh);
-	if (!skip_prefix(item.buf, "timeout=", &p))
-		return error("client sent bogus timeout line: %s", item.buf);
-	*timeout = atoi(p);
-
-	if (credential_read(c, fh) < 0)
-		return -1;
-	return 0;
-}
-
-static void serve_one_client(FILE *in, FILE *out)
-{
-	struct credential c = CREDENTIAL_INIT;
-	struct strbuf action = STRBUF_INIT;
-	int timeout = -1;
-
-	if (read_request(in, &c, &action, &timeout) < 0)
-		/* ignore error */ ;
-	else if (!strcmp(action.buf, "get")) {
-		struct credential_cache_entry *e = lookup_credential(&c);
-		if (e) {
-			fprintf(out, "username=%s\n", e->item.username);
-			fprintf(out, "password=%s\n", e->item.password);
-		}
-	}
-	else if (!strcmp(action.buf, "exit")) {
-		/*
-		 * It's important that we clean up our socket first, and then
-		 * signal the client only once we have finished the cleanup.
-		 * Calling exit() directly does this, because we clean up in
-		 * our atexit() handler, and then signal the client when our
-		 * process actually ends, which closes the socket and gives
-		 * them EOF.
-		 */
-		exit(0);
-	}
-	else if (!strcmp(action.buf, "erase"))
-		remove_credential(&c);
-	else if (!strcmp(action.buf, "store")) {
-		if (timeout < 0)
-			warning("cache client didn't specify a timeout");
-		else if (!c.username || !c.password)
-			warning("cache client gave us a partial credential");
-		else {
-			remove_credential(&c);
-			cache_credential(&c, timeout);
-		}
-	}
-	else
-		warning("cache client sent unknown action: %s", action.buf);
-
-	credential_clear(&c);
-	strbuf_release(&action);
-}
-
-static int serve_cache_loop(int fd)
-{
-	struct pollfd pfd;
-	timestamp_t wakeup;
-
-	wakeup = check_expirations();
-	if (!wakeup)
-		return 0;
-
-	pfd.fd = fd;
-	pfd.events = POLLIN;
-	if (poll(&pfd, 1, 1000 * wakeup) < 0) {
-		if (errno != EINTR)
-			die_errno("poll failed");
-		return 1;
-	}
-
-	if (pfd.revents & POLLIN) {
-		int client, client2;
-		FILE *in, *out;
-
-		client = accept(fd, NULL, NULL);
-		if (client < 0) {
-			warning_errno("accept failed");
-			return 1;
-		}
-		client2 = dup(client);
-		if (client2 < 0) {
-			warning_errno("dup failed");
-			close(client);
-			return 1;
-		}
-
-		in = xfdopen(client, "r");
-		out = xfdopen(client2, "w");
-		serve_one_client(in, out);
-		fclose(in);
-		fclose(out);
-	}
-	return 1;
-}
-
-static void serve_cache(const char *socket_path, int debug)
-{
-	int fd;
-
-	fd = unix_stream_listen(socket_path);
-	if (fd < 0)
-		die_errno("unable to bind to '%s'", socket_path);
-
-	printf("ok\n");
-	fclose(stdout);
-	if (!debug) {
-		if (!freopen("/dev/null", "w", stderr))
-			die_errno("unable to point stderr to /dev/null");
-	}
-
-	while (serve_cache_loop(fd))
-		; /* nothing */
-
-	close(fd);
-}
-
-static const char permissions_advice[] = N_(
-"The permissions on your socket directory are too loose; other\n"
-"users may be able to read your cached credentials. Consider running:\n"
-"\n"
-"	chmod 0700 %s");
-static void init_socket_directory(const char *path)
-{
-	struct stat st;
-	char *path_copy = xstrdup(path);
-	char *dir = dirname(path_copy);
-
-	if (!stat(dir, &st)) {
-		if (st.st_mode & 077)
-			die(_(permissions_advice), dir);
-	} else {
-		/*
-		 * We must be sure to create the directory with the correct mode,
-		 * not just chmod it after the fact; otherwise, there is a race
-		 * condition in which somebody can chdir to it, sleep, then try to open
-		 * our protected socket.
-		 */
-		if (safe_create_leading_directories_const(dir) < 0)
-			die_errno("unable to create directories for '%s'", dir);
-		if (mkdir(dir, 0700) < 0)
-			die_errno("unable to mkdir '%s'", dir);
-	}
-
-	if (chdir(dir))
-		/*
-		 * We don't actually care what our cwd is; we chdir here just to
-		 * be a friendly daemon and avoid tying up our original cwd.
-		 * If this fails, it's OK to just continue without that benefit.
-		 */
-		;
-
-	free(path_copy);
-}
-
-int cmd_main(int argc, const char **argv)
-{
-	struct tempfile *socket_file;
-	const char *socket_path;
-	int ignore_sighup = 0;
-	static const char *usage[] = {
-		"git-credential-cache--daemon [opts] <socket_path>",
-		NULL
-	};
-	int debug = 0;
-	const struct option options[] = {
-		OPT_BOOL(0, "debug", &debug,
-			 N_("print debugging messages to stderr")),
-		OPT_END()
-	};
-
-	git_config_get_bool("credentialcache.ignoresighup", &ignore_sighup);
-
-	argc = parse_options(argc, argv, NULL, options, usage, 0);
-	socket_path = argv[0];
-
-	if (!socket_path)
-		usage_with_options(usage, options);
-
-	if (!is_absolute_path(socket_path))
-		die("socket directory must be an absolute path");
-
-	init_socket_directory(socket_path);
-	socket_file = register_tempfile(socket_path);
-
-	if (ignore_sighup)
-		signal(SIGHUP, SIG_IGN);
-
-	serve_cache(socket_path, debug);
-	delete_tempfile(&socket_file);
-
-	return 0;
-}
generated by cgit-pink 1.4.1 (git 2.44.0) at 2024-05-09T14ยท41+0000