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![Carlo Marcelo Arenas Belón](/assets/img/avatar_default.png)
Connect and reset errors aren't what will be expected by POSIX but are instead compatible with the ones used by WinSock. To avoid any possibility of confusion with other systems, checks for disconnection and availability had been abstracted into helper functions that are platform specific. Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
184 lines
4.1 KiB
C
184 lines
4.1 KiB
C
#include "builtin.h"
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#include "parse-options.h"
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#ifndef NO_UNIX_SOCKETS
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#include "credential.h"
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#include "string-list.h"
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#include "unix-socket.h"
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#include "run-command.h"
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#define FLAG_SPAWN 0x1
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#define FLAG_RELAY 0x2
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#ifdef GIT_WINDOWS_NATIVE
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static int connection_closed(int error)
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{
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return (error == EINVAL);
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}
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static int connection_fatally_broken(int error)
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{
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return (error != ENOENT) && (error != ENETDOWN);
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}
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#else
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static int connection_closed(int error)
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{
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return (error == ECONNRESET);
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}
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static int connection_fatally_broken(int error)
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{
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return (error != ENOENT) && (error != ECONNREFUSED);
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}
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#endif
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static int send_request(const char *socket, const struct strbuf *out)
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{
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int got_data = 0;
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int fd = unix_stream_connect(socket, 0);
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if (fd < 0)
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return -1;
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if (write_in_full(fd, out->buf, out->len) < 0)
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die_errno("unable to write to cache daemon");
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shutdown(fd, SHUT_WR);
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while (1) {
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char in[1024];
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int r;
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r = read_in_full(fd, in, sizeof(in));
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if (r == 0 || (r < 0 && connection_closed(errno)))
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break;
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if (r < 0)
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die_errno("read error from cache daemon");
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write_or_die(1, in, r);
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got_data = 1;
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}
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close(fd);
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return got_data;
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}
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static void spawn_daemon(const char *socket)
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{
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struct child_process daemon = CHILD_PROCESS_INIT;
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char buf[128];
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int r;
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strvec_pushl(&daemon.args,
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"credential-cache--daemon", socket,
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NULL);
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daemon.git_cmd = 1;
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daemon.no_stdin = 1;
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daemon.out = -1;
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if (start_command(&daemon))
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die_errno("unable to start cache daemon");
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r = read_in_full(daemon.out, buf, sizeof(buf));
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if (r < 0)
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die_errno("unable to read result code from cache daemon");
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if (r != 3 || memcmp(buf, "ok\n", 3))
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die("cache daemon did not start: %.*s", r, buf);
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close(daemon.out);
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}
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static void do_cache(const char *socket, const char *action, int timeout,
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int flags)
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{
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struct strbuf buf = STRBUF_INIT;
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strbuf_addf(&buf, "action=%s\n", action);
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strbuf_addf(&buf, "timeout=%d\n", timeout);
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if (flags & FLAG_RELAY) {
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if (strbuf_read(&buf, 0, 0) < 0)
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die_errno("unable to relay credential");
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}
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if (send_request(socket, &buf) < 0) {
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if (connection_fatally_broken(errno))
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die_errno("unable to connect to cache daemon");
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if (flags & FLAG_SPAWN) {
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spawn_daemon(socket);
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if (send_request(socket, &buf) < 0)
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die_errno("unable to connect to cache daemon");
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}
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}
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strbuf_release(&buf);
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}
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static char *get_socket_path(void)
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{
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struct stat sb;
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char *old_dir, *socket;
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old_dir = interpolate_path("~/.git-credential-cache", 0);
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if (old_dir && !stat(old_dir, &sb) && S_ISDIR(sb.st_mode))
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socket = xstrfmt("%s/socket", old_dir);
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else
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socket = xdg_cache_home("credential/socket");
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free(old_dir);
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return socket;
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}
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int cmd_credential_cache(int argc, const char **argv, const char *prefix)
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{
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char *socket_path = NULL;
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int timeout = 900;
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const char *op;
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const char * const usage[] = {
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"git credential-cache [<options>] <action>",
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NULL
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};
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struct option options[] = {
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OPT_INTEGER(0, "timeout", &timeout,
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"number of seconds to cache credentials"),
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OPT_STRING(0, "socket", &socket_path, "path",
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"path of cache-daemon socket"),
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OPT_END()
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};
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argc = parse_options(argc, argv, prefix, options, usage, 0);
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if (!argc)
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usage_with_options(usage, options);
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op = argv[0];
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if (!socket_path)
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socket_path = get_socket_path();
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if (!socket_path)
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die("unable to find a suitable socket path; use --socket");
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if (!strcmp(op, "exit"))
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do_cache(socket_path, op, timeout, 0);
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else if (!strcmp(op, "get") || !strcmp(op, "erase"))
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do_cache(socket_path, op, timeout, FLAG_RELAY);
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else if (!strcmp(op, "store"))
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do_cache(socket_path, op, timeout, FLAG_RELAY|FLAG_SPAWN);
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else
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; /* ignore unknown operation */
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return 0;
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}
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#else
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int cmd_credential_cache(int argc, const char **argv, const char *prefix)
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{
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const char * const usage[] = {
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"git credential-cache [options] <action>",
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"",
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"credential-cache is disabled in this build of Git",
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NULL
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};
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struct option options[] = { OPT_END() };
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argc = parse_options(argc, argv, prefix, options, usage, 0);
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die(_("credential-cache unavailable; no unix socket support"));
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}
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#endif /* NO_UNIX_SOCKETS */
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