[thirdparty/systemd.git] / src / ask-password.c

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

/***
  This file is part of systemd.

  Copyright 2010 Lennart Poettering

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <sys/socket.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/un.h>
#include <sys/stat.h>
#include <sys/signalfd.h>
#include <getopt.h>
#include <termios.h>
#include <limits.h>
#include <stddef.h>

#include "log.h"
#include "macro.h"
#include "util.h"

static const char *arg_icon = NULL;
static const char *arg_message = NULL;
static bool arg_use_tty = true;
static usec_t arg_timeout = 60 * USEC_PER_SEC;

static int create_socket(char **name) {
        int fd;
        union {
                struct sockaddr sa;
                struct sockaddr_un un;
        } sa;
        int one = 1, r;
        char *c;

        assert(name);

        if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
                log_error("socket() failed: %m");
                return -errno;
        }

        zero(sa);
        sa.un.sun_family = AF_UNIX;
        snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1, "/dev/.systemd/ask-password/sck.%llu", random_ull());

        if (bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
                r = -errno;
                log_error("bind() failed: %m");
                goto fail;
        }

        if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
                r = -errno;
                log_error("SO_PASSCRED failed: %m");
                goto fail;
        }

        if (!(c = strdup(sa.un.sun_path))) {
                r = -ENOMEM;
                log_error("Out of memory");
                goto fail;
        }

        *name = c;
        return fd;

fail:
        close_nointr_nofail(fd);

        return r;
}

static int help(void) {

        printf("%s [OPTIONS...] MESSAGE\n\n"
               "Query the user for a system passphrase, via the TTY or an UI agent.\n\n"
               "  -h --help         Show this help\n"
               "     --icon=NAME    Icon name\n"
               "     --timeout=SEC Timeout in sec\n"
               "     --no-tty       Ask question via agent even on TTY\n",
               program_invocation_short_name);

        return 0;
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_ICON = 0x100,
                ARG_TIMEOUT,
                ARG_NO_TTY
        };

        static const struct option options[] = {
                { "help",      no_argument,       NULL, 'h'         },
                { "icon",      required_argument, NULL, ARG_ICON    },
                { "timeout",   required_argument, NULL, ARG_TIMEOUT },
                { "no-tty",    no_argument,       NULL, ARG_NO_TTY  },
                { NULL,        0,                 NULL, 0           }
        };

        int c;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {

                switch (c) {

                case 'h':
                        help();
                        return 0;

                case ARG_ICON:
                        arg_icon = optarg;
                        break;

                case ARG_TIMEOUT:
                        if (parse_usec(optarg, &arg_timeout) < 0 || arg_timeout <= 0) {
                                log_error("Failed to parse --timeout parameter %s", optarg);
                                return -EINVAL;
                        }
                        break;

                case ARG_NO_TTY:
                        arg_use_tty = false;
                        break;

                case '?':
                        return -EINVAL;

                default:
                        log_error("Unknown option code %c", c);
                        return -EINVAL;
                }
        }

        if (optind != argc-1) {
                help();
                return -EINVAL;
        }

        arg_message = argv[optind];
        return 1;
}

static int ask_agent(void) {
        enum {
                FD_SOCKET,
                FD_SIGNAL,
                _FD_MAX
        };

        char temp[] = "/dev/.systemd/ask-password/tmp.XXXXXX";
        char final[sizeof(temp)] = "";
        int fd = -1, r;
        FILE *f = NULL;
        char *socket_name = NULL;
        int socket_fd = -1, signal_fd = -1;
        sigset_t mask;
        usec_t not_after;
        struct pollfd pollfd[_FD_MAX];

        mkdir_p("/dev/.systemd/ask-password", 0755);

        if ((fd = mkostemp(temp, O_CLOEXEC|O_CREAT|O_WRONLY)) < 0) {
                log_error("Failed to create password file: %m");
                r = -errno;
                goto finish;
        }

        fchmod(fd, 0644);

        if (!(f = fdopen(fd, "w"))) {
                log_error("Failed to allocate FILE: %m");
                r = -errno;
                goto finish;
        }

        fd = -1;

        assert_se(sigemptyset(&mask) == 0);
        sigset_add_many(&mask, SIGINT, SIGTERM, -1);
        assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);

        if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) {
                log_error("signalfd(): %m");
                r = -errno;
                goto finish;
        }

        if ((socket_fd = create_socket(&socket_name)) < 0) {
                r = socket_fd;
                goto finish;
        }

        not_after = now(CLOCK_MONOTONIC) + arg_timeout;

        fprintf(f,
                "[Ask]\n"
                "PID=%lu\n"
                "Socket=%s\n"
                "NotAfter=%llu\n",
                (unsigned long) getpid(),
                socket_name,
                (unsigned long long) not_after);

        if (arg_message)
                fprintf(f, "Message=%s\n", arg_message);

        if (arg_icon)
                fprintf(f, "Icon=%s\n", arg_icon);

        fflush(f);

        if (ferror(f)) {
                log_error("Failed to write query file: %m");
                r = -errno;
                goto finish;
        }

        memcpy(final, temp, sizeof(temp));

        final[sizeof(final)-11] = 'a';
        final[sizeof(final)-10] = 's';
        final[sizeof(final)-9] = 'k';

        if (rename(temp, final) < 0) {
                log_error("Failed to rename query file: %m");
                r = -errno;
                goto finish;
        }

        zero(pollfd);
        pollfd[FD_SOCKET].fd = socket_fd;
        pollfd[FD_SOCKET].events = POLLIN;
        pollfd[FD_SIGNAL].fd = signal_fd;
        pollfd[FD_SIGNAL].events = POLLIN;

        for (;;) {
                char passphrase[LINE_MAX+1];
                struct msghdr msghdr;
                struct iovec iovec;
                struct ucred *ucred;
                union {
                        struct cmsghdr cmsghdr;
                        uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
                } control;
                ssize_t n;
                int k;

                if ((k = poll(pollfd, _FD_MAX, arg_timeout/USEC_PER_MSEC)) < 0) {

                        if (errno == EINTR)
                                continue;

                        log_error("poll() failed: %m");
                        r = -errno;
                        goto finish;
                }

                if (k <= 0) {
                        log_notice("Timed out");
                        r = -ETIME;
                        goto finish;
                }

                if (pollfd[FD_SIGNAL].revents & POLLIN)
                        break;

                if (pollfd[FD_SOCKET].revents != POLLIN) {
                        log_error("Unexpected poll() event.");
                        r = -EIO;
                        goto finish;
                }

                zero(iovec);
                iovec.iov_base = passphrase;
                iovec.iov_len = sizeof(passphrase)-1;

                zero(control);
                zero(msghdr);
                msghdr.msg_iov = &iovec;
                msghdr.msg_iovlen = 1;
                msghdr.msg_control = &control;
                msghdr.msg_controllen = sizeof(control);

                if ((n = recvmsg(socket_fd, &msghdr, 0)) < 0) {

                        if (errno == EAGAIN ||
                            errno == EINTR)
                                continue;

                        log_error("recvmsg() failed: %m");
                        r = -errno;
                        goto finish;
                }

                if (n <= 0) {
                        log_error("Message too short");
                        continue;
                }

                if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
                    control.cmsghdr.cmsg_level != SOL_SOCKET ||
                    control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
                    control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
                        log_warning("Received message without credentials. Ignoring.");
                        continue;
                }

                ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
                if (ucred->uid != 0) {
                        log_warning("Got request from unprivileged user. Ignoring.");
                        continue;
                }

                if (passphrase[0] == '+') {
                        passphrase[n] = 0;
                        fputs(passphrase+1, stdout);
                        fflush(stdout);
                } else if (passphrase[0] == '-') {
                        r = -ECANCELED;
                        goto finish;
                } else {
                        log_error("Invalid packet");
                        continue;
                }

                break;
        }

        r = 0;

finish:
        if (fd >= 0)
                close_nointr_nofail(fd);

        if (socket_name) {
                unlink(socket_name);
                free(socket_name);
        }

        if (socket_fd >= 0)
                close_nointr_nofail(socket_fd);

        if (signal_fd >= 0)
                close_nointr_nofail(signal_fd);

        if (f)
                fclose(f);

        unlink(temp);

        if (final[0])
                unlink(final);

        return r;
}

int main(int argc, char *argv[]) {
        int r;

        log_parse_environment();
        log_open();

        if ((r = parse_argv(argc, argv)) <= 0)
                goto finish;

        if (arg_use_tty && isatty(STDIN_FILENO)) {
                char *password = NULL;

                if ((r = ask_password_tty(arg_message, now(CLOCK_MONOTONIC) + arg_timeout, NULL, &password)) >= 0) {
                        fputs(password, stdout);
                        fflush(stdout);
                        free(password);
                }

        } else
                r = ask_agent();

finish:
        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
Commit	Line	Data
490aed58 LP	1	/-- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil --/
	2
	3	/***
	4	This file is part of systemd.
	5
	6	Copyright 2010 Lennart Poettering
	7
	8	systemd is free software; you can redistribute it and/or modify it
	9	under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	systemd is distributed in the hope that it will be useful, but
	14	WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	20	***/
	21
	22	#include <sys/socket.h>
	23	#include <sys/poll.h>
	24	#include <sys/types.h>
	25	#include <assert.h>
	26	#include <string.h>
	27	#include <errno.h>
	28	#include <unistd.h>
	29	#include <fcntl.h>
	30	#include <sys/un.h>
	31	#include <sys/stat.h>
	32	#include <sys/signalfd.h>
	33	#include <getopt.h>
1b39d4b9 LP	34	#include <termios.h>
1b39d4b9 LP	35	#include <limits.h>
0e098b15	36	#include <stddef.h>
490aed58 LP	37
	38	#include "log.h"
	39	#include "macro.h"
	40	#include "util.h"
	41
	42	static const char *arg_icon = NULL;
	43	static const char *arg_message = NULL;
1b39d4b9	44	static bool arg_use_tty = true;
490aed58 LP	45	static usec_t arg_timeout = 60 * USEC_PER_SEC;
	46
	47	static int create_socket(char **name) {
	48	int fd;
	49	union {
	50	struct sockaddr sa;
	51	struct sockaddr_un un;
	52	} sa;
	53	int one = 1, r;
	54	char *c;
	55
	56	assert(name);
	57
	58	if ((fd = socket(AF_UNIX, SOCK_DGRAM\|SOCK_CLOEXEC\|SOCK_NONBLOCK, 0)) < 0) {
	59	log_error("socket() failed: %m");
	60	return -errno;
	61	}
	62
	63	zero(sa);
	64	sa.un.sun_family = AF_UNIX;
ec863ba6	65	snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1, "/dev/.systemd/ask-password/sck.%llu", random_ull());
490aed58	66
ec863ba6	67	if (bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
490aed58 LP	68	r = -errno;
	69	log_error("bind() failed: %m");
	70	goto fail;
	71	}
	72
	73	if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
	74	r = -errno;
	75	log_error("SO_PASSCRED failed: %m");
	76	goto fail;
	77	}
	78
ec863ba6	79	if (!(c = strdup(sa.un.sun_path))) {
490aed58 LP	80	r = -ENOMEM;
	81	log_error("Out of memory");
	82	goto fail;
	83	}
	84
	85	*name = c;
	86	return fd;
	87
	88	fail:
	89	close_nointr_nofail(fd);
	90
	91	return r;
	92	}
	93
	94	static int help(void) {
	95
	96	printf("%s [OPTIONS...] MESSAGE\n\n"
ad6ab0af	97	"Query the user for a system passphrase, via the TTY or an UI agent.\n\n"
490aed58 LP	98	" -h --help Show this help\n"
490aed58 LP	99	" --icon=NAME Icon name\n"
ec863ba6	100	" --timeout=SEC Timeout in sec\n"
1b39d4b9	101	" --no-tty Ask question via agent even on TTY\n",
490aed58 LP	102	program_invocation_short_name);
	103
	104	return 0;
	105	}
	106
	107	static int parse_argv(int argc, char *argv[]) {
	108
	109	enum {
	110	ARG_ICON = 0x100,
1b39d4b9 LP	111	ARG_TIMEOUT,
1b39d4b9 LP	112	ARG_NO_TTY
490aed58 LP	113	};
	114
	115	static const struct option options[] = {
	116	{ "help", no_argument, NULL, 'h' },
	117	{ "icon", required_argument, NULL, ARG_ICON },
	118	{ "timeout", required_argument, NULL, ARG_TIMEOUT },
1b39d4b9	119	{ "no-tty", no_argument, NULL, ARG_NO_TTY },
490aed58 LP	120	{ NULL, 0, NULL, 0 }
	121	};
	122
	123	int c;
	124
	125	assert(argc >= 0);
	126	assert(argv);
	127
	128	while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
	129
	130	switch (c) {
	131
	132	case 'h':
	133	help();
	134	return 0;
	135
	136	case ARG_ICON:
	137	arg_icon = optarg;
	138	break;
	139
	140	case ARG_TIMEOUT:
	141	if (parse_usec(optarg, &arg_timeout) < 0 \|\| arg_timeout <= 0) {
	142	log_error("Failed to parse --timeout parameter %s", optarg);
	143	return -EINVAL;
	144	}
	145	break;
	146
1b39d4b9 LP	147	case ARG_NO_TTY:
	148	arg_use_tty = false;
	149	break;
	150
490aed58 LP	151	case '?':
	152	return -EINVAL;
	153
	154	default:
	155	log_error("Unknown option code %c", c);
	156	return -EINVAL;
	157	}
	158	}
	159
	160	if (optind != argc-1) {
	161	help();
	162	return -EINVAL;
	163	}
	164
	165	arg_message = argv[optind];
1b39d4b9	166	return 1;
490aed58 LP	167	}
490aed58 LP	168
1b39d4b9	169	static int ask_agent(void) {
b9ba604e LP	170	enum {
	171	FD_SOCKET,
	172	FD_SIGNAL,
	173	_FD_MAX
	174	};
	175
490aed58 LP	176	char temp[] = "/dev/.systemd/ask-password/tmp.XXXXXX";
490aed58 LP	177	char final[sizeof(temp)] = "";
1b39d4b9	178	int fd = -1, r;
490aed58 LP	179	FILE *f = NULL;
490aed58 LP	180	char *socket_name = NULL;
b9ba604e	181	int socket_fd = -1, signal_fd = -1;
490aed58 LP	182	sigset_t mask;
490aed58 LP	183	usec_t not_after;
b9ba604e	184	struct pollfd pollfd[_FD_MAX];
490aed58	185
ec863ba6 LP	186	mkdir_p("/dev/.systemd/ask-password", 0755);
ec863ba6 LP	187
490aed58 LP	188	if ((fd = mkostemp(temp, O_CLOEXEC\|O_CREAT\|O_WRONLY)) < 0) {
490aed58 LP	189	log_error("Failed to create password file: %m");
1b39d4b9	190	r = -errno;
490aed58 LP	191	goto finish;
	192	}
	193
	194	fchmod(fd, 0644);
	195
	196	if (!(f = fdopen(fd, "w"))) {
	197	log_error("Failed to allocate FILE: %m");
1b39d4b9	198	r = -errno;
490aed58 LP	199	goto finish;
	200	}
	201
	202	fd = -1;
	203
	204	assert_se(sigemptyset(&mask) == 0);
	205	sigset_add_many(&mask, SIGINT, SIGTERM, -1);
	206	assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
	207
	208	if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK\|SFD_CLOEXEC)) < 0) {
	209	log_error("signalfd(): %m");
1b39d4b9	210	r = -errno;
490aed58 LP	211	goto finish;
	212	}
	213
1b39d4b9 LP	214	if ((socket_fd = create_socket(&socket_name)) < 0) {
1b39d4b9 LP	215	r = socket_fd;
490aed58	216	goto finish;
1b39d4b9	217	}
490aed58 LP	218
	219	not_after = now(CLOCK_MONOTONIC) + arg_timeout;
	220
	221	fprintf(f,
	222	"[Ask]\n"
ec863ba6	223	"PID=%lu\n"
490aed58 LP	224	"Socket=%s\n"
490aed58 LP	225	"NotAfter=%llu\n",
ec863ba6	226	(unsigned long) getpid(),
490aed58 LP	227	socket_name,
	228	(unsigned long long) not_after);
	229
	230	if (arg_message)
	231	fprintf(f, "Message=%s\n", arg_message);
	232
	233	if (arg_icon)
	234	fprintf(f, "Icon=%s\n", arg_icon);
	235
	236	fflush(f);
	237
	238	if (ferror(f)) {
	239	log_error("Failed to write query file: %m");
1b39d4b9	240	r = -errno;
490aed58 LP	241	goto finish;
	242	}
	243
	244	memcpy(final, temp, sizeof(temp));
	245
	246	final[sizeof(final)-11] = 'a';
	247	final[sizeof(final)-10] = 's';
	248	final[sizeof(final)-9] = 'k';
	249
	250	if (rename(temp, final) < 0) {
	251	log_error("Failed to rename query file: %m");
1b39d4b9	252	r = -errno;
490aed58 LP	253	goto finish;
	254	}
	255
b9ba604e LP	256	zero(pollfd);
	257	pollfd[FD_SOCKET].fd = socket_fd;
	258	pollfd[FD_SOCKET].events = POLLIN;
	259	pollfd[FD_SIGNAL].fd = signal_fd;
	260	pollfd[FD_SIGNAL].events = POLLIN;
490aed58	261
b9ba604e	262	for (;;) {
490aed58 LP	263	char passphrase[LINE_MAX+1];
	264	struct msghdr msghdr;
	265	struct iovec iovec;
	266	struct ucred *ucred;
	267	union {
	268	struct cmsghdr cmsghdr;
	269	uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
	270	} control;
	271	ssize_t n;
1b39d4b9	272	int k;
490aed58	273
b9ba604e	274	if ((k = poll(pollfd, _FD_MAX, arg_timeout/USEC_PER_MSEC)) < 0) {
490aed58 LP	275
	276	if (errno == EINTR)
	277	continue;
	278
1b39d4b9 LP	279	log_error("poll() failed: %m");
1b39d4b9 LP	280	r = -errno;
490aed58 LP	281	goto finish;
	282	}
	283
	284	if (k <= 0) {
	285	log_notice("Timed out");
1b39d4b9	286	r = -ETIME;
490aed58 LP	287	goto finish;
	288	}
	289
	290	if (pollfd[FD_SIGNAL].revents & POLLIN)
	291	break;
	292
	293	if (pollfd[FD_SOCKET].revents != POLLIN) {
	294	log_error("Unexpected poll() event.");
1b39d4b9	295	r = -EIO;
490aed58 LP	296	goto finish;
	297	}
	298
	299	zero(iovec);
	300	iovec.iov_base = passphrase;
	301	iovec.iov_len = sizeof(passphrase)-1;
	302
	303	zero(control);
	304	zero(msghdr);
	305	msghdr.msg_iov = &iovec;
	306	msghdr.msg_iovlen = 1;
	307	msghdr.msg_control = &control;
	308	msghdr.msg_controllen = sizeof(control);
	309
	310	if ((n = recvmsg(socket_fd, &msghdr, 0)) < 0) {
	311
	312	if (errno == EAGAIN \|\|
	313	errno == EINTR)
	314	continue;
	315
	316	log_error("recvmsg() failed: %m");
1b39d4b9	317	r = -errno;
490aed58 LP	318	goto finish;
	319	}
	320
	321	if (n <= 0) {
	322	log_error("Message too short");
	323	continue;
	324	}
	325
	326	if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) \|\|
	327	control.cmsghdr.cmsg_level != SOL_SOCKET \|\|
	328	control.cmsghdr.cmsg_type != SCM_CREDENTIALS \|\|
	329	control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
	330	log_warning("Received message without credentials. Ignoring.");
	331	continue;
	332	}
	333
	334	ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
	335	if (ucred->uid != 0) {
	336	log_warning("Got request from unprivileged user. Ignoring.");
	337	continue;
	338	}
	339
	340	if (passphrase[0] == '+') {
	341	passphrase[n] = 0;
	342	fputs(passphrase+1, stdout);
1b39d4b9 LP	343	fflush(stdout);
	344	} else if (passphrase[0] == '-') {
	345	r = -ECANCELED;
490aed58	346	goto finish;
1b39d4b9	347	} else {
490aed58 LP	348	log_error("Invalid packet");
	349	continue;
	350	}
	351
	352	break;
	353	}
	354
1b39d4b9	355	r = 0;
490aed58 LP	356
	357	finish:
	358	if (fd >= 0)
	359	close_nointr_nofail(fd);
	360
ec863ba6 LP	361	if (socket_name) {
	362	unlink(socket_name);
	363	free(socket_name);
	364	}
	365
490aed58 LP	366	if (socket_fd >= 0)
	367	close_nointr_nofail(socket_fd);
	368
b9ba604e LP	369	if (signal_fd >= 0)
	370	close_nointr_nofail(signal_fd);
	371
490aed58 LP	372	if (f)
	373	fclose(f);
	374
	375	unlink(temp);
	376
	377	if (final[0])
	378	unlink(final);
	379
	380	return r;
	381	}
1b39d4b9	382
1b39d4b9 LP	383	int main(int argc, char *argv[]) {
	384	int r;
	385
	386	log_parse_environment();
	387	log_open();
	388
	389	if ((r = parse_argv(argc, argv)) <= 0)
	390	goto finish;
	391
ec863ba6 LP	392	if (arg_use_tty && isatty(STDIN_FILENO)) {
	393	char *password = NULL;
	394
	395	if ((r = ask_password_tty(arg_message, now(CLOCK_MONOTONIC) + arg_timeout, NULL, &password)) >= 0) {
	396	fputs(password, stdout);
	397	fflush(stdout);
	398	free(password);
	399	}
	400
	401	} else
1b39d4b9 LP	402	r = ask_agent();
	403
	404	finish:
	405	return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
	406	}