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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
00843602 | 2 | |
7f4e0805 LP |
3 | #include <errno.h> |
4 | #include <fcntl.h> | |
a8fbdf54 TA |
5 | #include <inttypes.h> |
6 | #include <limits.h> | |
00843602 | 7 | #include <stdbool.h> |
7f4e0805 | 8 | #include <stddef.h> |
a8fbdf54 TA |
9 | #include <stdint.h> |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
00843602 | 12 | #include <sys/inotify.h> |
7f4e0805 | 13 | #include <sys/signalfd.h> |
a8fbdf54 TA |
14 | #include <sys/stat.h> |
15 | #include <sys/time.h> | |
16 | #include <sys/uio.h> | |
00843602 LP |
17 | #include <sys/un.h> |
18 | #include <termios.h> | |
19 | #include <unistd.h> | |
7f4e0805 | 20 | |
b5efdb8a | 21 | #include "alloc-util.h" |
b7120388 | 22 | #include "ansi-color.h" |
3ffd4af2 | 23 | #include "ask-password-api.h" |
8806bb4b | 24 | #include "creds-util.h" |
3ffd4af2 | 25 | #include "fd-util.h" |
0d39fa9c | 26 | #include "fileio.h" |
f97b34a6 | 27 | #include "format-util.h" |
c7b7d74e | 28 | #include "fs-util.h" |
d8e32c47 | 29 | #include "glyph-util.h" |
c004493c | 30 | #include "io-util.h" |
bd1ae178 | 31 | #include "iovec-util.h" |
cbae575e | 32 | #include "keyring-util.h" |
a8fbdf54 TA |
33 | #include "log.h" |
34 | #include "macro.h" | |
0a970718 | 35 | #include "memory-util.h" |
f5947a5e | 36 | #include "missing_syscall.h" |
35cd0ba5 | 37 | #include "mkdir-label.h" |
08af3cc5 | 38 | #include "nulstr-util.h" |
aa25e19b | 39 | #include "plymouth-util.h" |
df0ff127 | 40 | #include "process-util.h" |
3df3e884 | 41 | #include "random-util.h" |
24882e06 | 42 | #include "signal-util.h" |
00843602 | 43 | #include "socket-util.h" |
07630cea | 44 | #include "string-util.h" |
00843602 LP |
45 | #include "strv.h" |
46 | #include "terminal-util.h" | |
a8fbdf54 | 47 | #include "time-util.h" |
e4de7287 | 48 | #include "tmpfile-util.h" |
affb60b1 | 49 | #include "umask-util.h" |
f3149d57 | 50 | #include "utf8.h" |
7f4e0805 | 51 | |
e287086b LP |
52 | #define KEYRING_TIMEOUT_USEC ((5 * USEC_PER_MINUTE) / 2) |
53 | ||
54 | static int lookup_key(const char *keyname, key_serial_t *ret) { | |
55 | key_serial_t serial; | |
56 | ||
57 | assert(keyname); | |
58 | assert(ret); | |
59 | ||
60 | serial = request_key("user", keyname, NULL, 0); | |
61 | if (serial == -1) | |
9c4615fb | 62 | return negative_errno(); |
e287086b LP |
63 | |
64 | *ret = serial; | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static int retrieve_key(key_serial_t serial, char ***ret) { | |
cbae575e | 69 | _cleanup_(erase_and_freep) void *p = NULL; |
e287086b | 70 | char **l; |
cbae575e LP |
71 | size_t n; |
72 | int r; | |
e287086b LP |
73 | |
74 | assert(ret); | |
75 | ||
cbae575e LP |
76 | r = keyring_read(serial, &p, &n); |
77 | if (r < 0) | |
78 | return r; | |
79 | ||
80 | l = strv_parse_nulstr(p, n); | |
e287086b LP |
81 | if (!l) |
82 | return -ENOMEM; | |
83 | ||
84 | *ret = l; | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int add_to_keyring(const char *keyname, AskPasswordFlags flags, char **passwords) { | |
ab84f5b9 | 89 | _cleanup_strv_free_erase_ char **l = NULL; |
e693a932 | 90 | _cleanup_(erase_and_freep) char *p = NULL; |
e287086b LP |
91 | key_serial_t serial; |
92 | size_t n; | |
93 | int r; | |
94 | ||
95 | assert(keyname); | |
e287086b | 96 | |
9cb5bf91 | 97 | if (!FLAGS_SET(flags, ASK_PASSWORD_PUSH_CACHE)) |
e287086b | 98 | return 0; |
e013e10d LP |
99 | if (strv_isempty(passwords)) |
100 | return 0; | |
e287086b LP |
101 | |
102 | r = lookup_key(keyname, &serial); | |
103 | if (r >= 0) { | |
104 | r = retrieve_key(serial, &l); | |
105 | if (r < 0) | |
106 | return r; | |
107 | } else if (r != -ENOKEY) | |
108 | return r; | |
109 | ||
110 | r = strv_extend_strv(&l, passwords, true); | |
111 | if (r <= 0) | |
112 | return r; | |
113 | ||
114 | r = strv_make_nulstr(l, &p, &n); | |
115 | if (r < 0) | |
116 | return r; | |
117 | ||
76078ad8 LP |
118 | /* chop off the final NUL byte. We do this because we want to use the separator NUL bytes only if we |
119 | * have multiple passwords. */ | |
120 | n = LESS_BY(n, (size_t) 1); | |
121 | ||
b60df13b | 122 | serial = add_key("user", keyname, p, n, KEY_SPEC_USER_KEYRING); |
e287086b LP |
123 | if (serial == -1) |
124 | return -errno; | |
125 | ||
126 | if (keyctl(KEYCTL_SET_TIMEOUT, | |
127 | (unsigned long) serial, | |
128 | (unsigned long) DIV_ROUND_UP(KEYRING_TIMEOUT_USEC, USEC_PER_SEC), 0, 0) < 0) | |
e3ac53a2 | 129 | log_debug_errno(errno, "Failed to adjust kernel keyring key timeout: %m"); |
e287086b | 130 | |
c7b7d74e XF |
131 | /* Tell everyone to check the keyring */ |
132 | (void) touch("/run/systemd/ask-password"); | |
133 | ||
e3ac53a2 | 134 | log_debug("Added key to kernel keyring as %" PRIi32 ".", serial); |
e287086b LP |
135 | |
136 | return 1; | |
137 | } | |
138 | ||
139 | static int add_to_keyring_and_log(const char *keyname, AskPasswordFlags flags, char **passwords) { | |
140 | int r; | |
141 | ||
142 | assert(keyname); | |
e287086b LP |
143 | |
144 | r = add_to_keyring(keyname, flags, passwords); | |
145 | if (r < 0) | |
e3ac53a2 | 146 | return log_debug_errno(r, "Failed to add password to kernel keyring: %m"); |
e287086b LP |
147 | |
148 | return 0; | |
149 | } | |
150 | ||
d08fd4c3 | 151 | static int ask_password_keyring(const AskPasswordRequest *req, AskPasswordFlags flags, char ***ret) { |
e287086b LP |
152 | key_serial_t serial; |
153 | int r; | |
154 | ||
d08fd4c3 | 155 | assert(req); |
e287086b LP |
156 | assert(ret); |
157 | ||
9cb5bf91 | 158 | if (!FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED)) |
e287086b LP |
159 | return -EUNATCH; |
160 | ||
d08fd4c3 | 161 | r = lookup_key(req->keyring, &serial); |
bb44fd07 ZJS |
162 | if (ERRNO_IS_NEG_NOT_SUPPORTED(r) || r == -EPERM) |
163 | /* When retrieving, the distinction between "kernel or container manager don't support or | |
164 | * allow this" and "no matching key known" doesn't matter. Note that we propagate EACCESS | |
165 | * here (even if EPERM not) since that is used if the keyring is available, but we lack | |
166 | * access to the key. */ | |
167 | return -ENOKEY; | |
168 | if (r < 0) | |
e287086b LP |
169 | return r; |
170 | ||
623a8b19 YW |
171 | _cleanup_strv_free_erase_ char **l = NULL; |
172 | r = retrieve_key(serial, &l); | |
173 | if (r < 0) | |
174 | return r; | |
175 | ||
176 | if (strv_isempty(l)) | |
177 | return log_debug_errno(SYNTHETIC_ERRNO(ENOKEY), "Found an empty password from keyring."); | |
178 | ||
179 | *ret = TAKE_PTR(l); | |
180 | return 0; | |
e287086b LP |
181 | } |
182 | ||
8e9d1eec | 183 | static int backspace_chars(int ttyfd, size_t p) { |
58fc840b | 184 | if (ttyfd < 0) |
8e9d1eec | 185 | return 0; |
58fc840b | 186 | |
8e9d1eec ZJS |
187 | _cleanup_free_ char *buf = malloc_multiply(3, p); |
188 | if (!buf) | |
189 | return log_oom(); | |
58fc840b | 190 | |
8e9d1eec ZJS |
191 | for (size_t i = 0; i < p; i++) |
192 | memcpy(buf + 3 * i, "\b \b", 3); | |
58fc840b | 193 | |
e22c60a9 | 194 | return loop_write(ttyfd, buf, 3 * p); |
8e9d1eec | 195 | } |
fd6ac62c | 196 | |
8e9d1eec | 197 | static int backspace_string(int ttyfd, const char *str) { |
fd6ac62c LP |
198 | assert(str); |
199 | ||
f95dbcc2 | 200 | /* Backspaces through enough characters to entirely undo printing of the specified string. */ |
fd6ac62c | 201 | |
8e9d1eec ZJS |
202 | if (ttyfd < 0) |
203 | return 0; | |
204 | ||
205 | size_t m = utf8_n_codepoints(str); | |
f5fbe71d | 206 | if (m == SIZE_MAX) |
8e9d1eec | 207 | m = strlen(str); /* Not a valid UTF-8 string? If so, let's backspace the number of bytes |
5bc9ea07 | 208 | * output. Most likely this happened because we are not in a UTF-8 locale, |
8e9d1eec ZJS |
209 | * and in that case that is the correct thing to do. And even if it's not, |
210 | * terminals tend to stop backspacing at the leftmost column, hence | |
211 | * backspacing too much should be mostly OK. */ | |
fd6ac62c | 212 | |
8e9d1eec | 213 | return backspace_chars(ttyfd, m); |
fd6ac62c LP |
214 | } |
215 | ||
6b2faba7 | 216 | int ask_password_plymouth( |
d08fd4c3 | 217 | const AskPasswordRequest *req, |
6b2faba7 FB |
218 | usec_t until, |
219 | AskPasswordFlags flags, | |
220 | const char *flag_file, | |
221 | char ***ret) { | |
222 | ||
254d1313 | 223 | _cleanup_close_ int fd = -EBADF, notify = -EBADF; |
6b2faba7 FB |
224 | _cleanup_free_ char *packet = NULL; |
225 | ssize_t k; | |
226 | int r, n; | |
227 | struct pollfd pollfd[2] = {}; | |
228 | char buffer[LINE_MAX]; | |
229 | size_t p = 0; | |
230 | enum { | |
231 | POLL_SOCKET, | |
232 | POLL_INOTIFY | |
233 | }; | |
234 | ||
235 | assert(ret); | |
236 | ||
b2ac9280 LP |
237 | if (FLAGS_SET(flags, ASK_PASSWORD_HEADLESS)) |
238 | return -ENOEXEC; | |
239 | ||
d08fd4c3 | 240 | const char *message = req && req->message ? req->message : "Password:"; |
66bff73b | 241 | |
6b2faba7 FB |
242 | if (flag_file) { |
243 | notify = inotify_init1(IN_CLOEXEC|IN_NONBLOCK); | |
244 | if (notify < 0) | |
245 | return -errno; | |
246 | ||
108dfff2 | 247 | if (inotify_add_watch(notify, flag_file, IN_ATTRIB) < 0) /* for the link count */ |
6b2faba7 FB |
248 | return -errno; |
249 | } | |
250 | ||
aa25e19b | 251 | fd = plymouth_connect(SOCK_NONBLOCK); |
6b2faba7 | 252 | if (fd < 0) |
aa25e19b | 253 | return fd; |
6b2faba7 | 254 | |
9cb5bf91 | 255 | if (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED)) { |
6b2faba7 FB |
256 | packet = strdup("c"); |
257 | n = 1; | |
258 | } else if (asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n) < 0) | |
259 | packet = NULL; | |
260 | if (!packet) | |
261 | return -ENOMEM; | |
262 | ||
e22c60a9 | 263 | r = loop_write_full(fd, packet, n + 1, USEC_INFINITY); |
6b2faba7 FB |
264 | if (r < 0) |
265 | return r; | |
266 | ||
692597c8 LP |
267 | CLEANUP_ERASE(buffer); |
268 | ||
6b2faba7 FB |
269 | pollfd[POLL_SOCKET].fd = fd; |
270 | pollfd[POLL_SOCKET].events = POLLIN; | |
271 | pollfd[POLL_INOTIFY].fd = notify; | |
272 | pollfd[POLL_INOTIFY].events = POLLIN; | |
273 | ||
274 | for (;;) { | |
d9e2af0a | 275 | usec_t timeout; |
6b2faba7 | 276 | |
d9e2af0a YW |
277 | if (until > 0) |
278 | timeout = usec_sub_unsigned(until, now(CLOCK_MONOTONIC)); | |
279 | else | |
280 | timeout = USEC_INFINITY; | |
6b2faba7 | 281 | |
692597c8 LP |
282 | if (flag_file && access(flag_file, F_OK) < 0) |
283 | return -errno; | |
6b2faba7 | 284 | |
d9e2af0a YW |
285 | r = ppoll_usec(pollfd, notify >= 0 ? 2 : 1, timeout); |
286 | if (r == -EINTR) | |
287 | continue; | |
288 | if (r < 0) | |
692597c8 LP |
289 | return r; |
290 | if (r == 0) | |
291 | return -ETIME; | |
6b2faba7 FB |
292 | |
293 | if (notify >= 0 && pollfd[POLL_INOTIFY].revents != 0) | |
294 | (void) flush_fd(notify); | |
295 | ||
296 | if (pollfd[POLL_SOCKET].revents == 0) | |
297 | continue; | |
298 | ||
299 | k = read(fd, buffer + p, sizeof(buffer) - p); | |
300 | if (k < 0) { | |
8add30a0 | 301 | if (ERRNO_IS_TRANSIENT(errno)) |
6b2faba7 FB |
302 | continue; |
303 | ||
692597c8 | 304 | return -errno; |
6b2faba7 | 305 | } |
692597c8 LP |
306 | if (k == 0) |
307 | return -EIO; | |
6b2faba7 FB |
308 | |
309 | p += k; | |
310 | ||
6b2faba7 FB |
311 | if (buffer[0] == 5) { |
312 | ||
9cb5bf91 | 313 | if (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED)) { |
6b2faba7 FB |
314 | /* Hmm, first try with cached |
315 | * passwords failed, so let's retry | |
316 | * with a normal password request */ | |
317 | packet = mfree(packet); | |
318 | ||
692597c8 LP |
319 | if (asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n) < 0) |
320 | return -ENOMEM; | |
6b2faba7 | 321 | |
e22c60a9 | 322 | r = loop_write_full(fd, packet, n + 1, USEC_INFINITY); |
6b2faba7 | 323 | if (r < 0) |
692597c8 | 324 | return r; |
6b2faba7 FB |
325 | |
326 | flags &= ~ASK_PASSWORD_ACCEPT_CACHED; | |
327 | p = 0; | |
328 | continue; | |
329 | } | |
330 | ||
331 | /* No password, because UI not shown */ | |
692597c8 | 332 | return -ENOENT; |
6b2faba7 FB |
333 | |
334 | } else if (IN_SET(buffer[0], 2, 9)) { | |
623a8b19 | 335 | _cleanup_strv_free_erase_ char **l = NULL; |
6b2faba7 | 336 | uint32_t size; |
6b2faba7 FB |
337 | |
338 | /* One or more answers */ | |
339 | if (p < 5) | |
340 | continue; | |
341 | ||
342 | memcpy(&size, buffer+1, sizeof(size)); | |
343 | size = le32toh(size); | |
692597c8 LP |
344 | if (size + 5 > sizeof(buffer)) |
345 | return -EIO; | |
6b2faba7 FB |
346 | |
347 | if (p-5 < size) | |
348 | continue; | |
349 | ||
350 | l = strv_parse_nulstr(buffer + 5, size); | |
692597c8 LP |
351 | if (!l) |
352 | return -ENOMEM; | |
6b2faba7 | 353 | |
623a8b19 YW |
354 | if (strv_isempty(l)) |
355 | return log_debug_errno(SYNTHETIC_ERRNO(ECANCELED), "Received an empty password."); | |
356 | ||
357 | *ret = TAKE_PTR(l); | |
358 | return 0; | |
6b2faba7 | 359 | |
692597c8 | 360 | } else |
6b2faba7 | 361 | /* Unknown packet */ |
692597c8 | 362 | return -EIO; |
6b2faba7 | 363 | } |
6b2faba7 FB |
364 | } |
365 | ||
8aaf18e0 ZJS |
366 | #define NO_ECHO "(no echo) " |
367 | #define PRESS_TAB "(press TAB for no echo) " | |
368 | #define SKIPPED "(skipped)" | |
369 | ||
7f4e0805 | 370 | int ask_password_tty( |
daa55720 | 371 | int ttyfd, |
d08fd4c3 | 372 | const AskPasswordRequest *req, |
7f4e0805 | 373 | usec_t until, |
e287086b | 374 | AskPasswordFlags flags, |
7f4e0805 | 375 | const char *flag_file, |
c7b7d74e | 376 | char ***ret) { |
7f4e0805 | 377 | |
088dcd8e LP |
378 | enum { |
379 | POLL_TTY, | |
380 | POLL_INOTIFY, | |
381 | _POLL_MAX, | |
382 | }; | |
383 | ||
8aaf18e0 | 384 | bool reset_tty = false, dirty = false, use_color = false, press_tab_visible = false; |
254d1313 | 385 | _cleanup_close_ int cttyfd = -EBADF, notify = -EBADF; |
7f4e0805 | 386 | struct termios old_termios, new_termios; |
f3149d57 | 387 | char passphrase[LINE_MAX + 1] = {}, *x; |
c7b7d74e | 388 | _cleanup_strv_free_erase_ char **l = NULL; |
088dcd8e | 389 | struct pollfd pollfd[_POLL_MAX]; |
f3149d57 | 390 | size_t p = 0, codepoint = 0; |
088dcd8e | 391 | int r; |
7f4e0805 | 392 | |
e287086b LP |
393 | assert(ret); |
394 | ||
b2ac9280 LP |
395 | if (FLAGS_SET(flags, ASK_PASSWORD_HEADLESS)) |
396 | return -ENOEXEC; | |
397 | ||
9cb5bf91 | 398 | if (FLAGS_SET(flags, ASK_PASSWORD_NO_TTY)) |
e287086b LP |
399 | return -EUNATCH; |
400 | ||
d08fd4c3 LP |
401 | const char *message = req && req->message ? req->message : "Password:"; |
402 | const char *keyring = req ? req->keyring : NULL; | |
7f4e0805 | 403 | |
e390c34d | 404 | if (!FLAGS_SET(flags, ASK_PASSWORD_HIDE_EMOJI) && emoji_enabled()) |
52d199e3 LP |
405 | message = strjoina(special_glyph(SPECIAL_GLYPH_LOCK_AND_KEY), " ", message); |
406 | ||
d08fd4c3 | 407 | if (flag_file || (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED) && keyring)) { |
981e4cd3 | 408 | notify = inotify_init1(IN_CLOEXEC|IN_NONBLOCK); |
a497a296 LP |
409 | if (notify < 0) |
410 | return -errno; | |
c7b7d74e XF |
411 | } |
412 | if (flag_file) { | |
a497a296 LP |
413 | if (inotify_add_watch(notify, flag_file, IN_ATTRIB /* for the link count */) < 0) |
414 | return -errno; | |
7f4e0805 | 415 | } |
d08fd4c3 LP |
416 | if (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED) && req && keyring) { |
417 | r = ask_password_keyring(req, flags, ret); | |
c7b7d74e XF |
418 | if (r >= 0) |
419 | return 0; | |
420 | else if (r != -ENOKEY) | |
421 | return r; | |
422 | ||
423 | if (inotify_add_watch(notify, "/run/systemd/ask-password", IN_ATTRIB /* for mtime */) < 0) | |
424 | return -errno; | |
425 | } | |
7f4e0805 | 426 | |
692597c8 LP |
427 | CLEANUP_ERASE(passphrase); |
428 | ||
daa55720 LP |
429 | /* If the caller didn't specify a TTY, then use the controlling tty, if we can. */ |
430 | if (ttyfd < 0) | |
431 | ttyfd = cttyfd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC); | |
7f4e0805 | 432 | |
daa55720 | 433 | if (ttyfd >= 0) { |
a497a296 LP |
434 | if (tcgetattr(ttyfd, &old_termios) < 0) |
435 | return -errno; | |
7f4e0805 | 436 | |
9cb5bf91 | 437 | if (FLAGS_SET(flags, ASK_PASSWORD_CONSOLE_COLOR)) |
c2b32159 LP |
438 | use_color = dev_console_colors_enabled(); |
439 | else | |
440 | use_color = colors_enabled(); | |
441 | ||
442 | if (use_color) | |
e22c60a9 | 443 | (void) loop_write(ttyfd, ANSI_HIGHLIGHT, SIZE_MAX); |
ac7a9674 | 444 | |
e22c60a9 MY |
445 | (void) loop_write(ttyfd, message, SIZE_MAX); |
446 | (void) loop_write(ttyfd, " ", 1); | |
ac7a9674 | 447 | |
9cb5bf91 | 448 | if (!FLAGS_SET(flags, ASK_PASSWORD_SILENT) && !FLAGS_SET(flags, ASK_PASSWORD_ECHO)) { |
8aaf18e0 | 449 | if (use_color) |
e22c60a9 MY |
450 | (void) loop_write(ttyfd, ansi_grey(), SIZE_MAX); |
451 | ||
452 | (void) loop_write(ttyfd, PRESS_TAB, SIZE_MAX); | |
8aaf18e0 ZJS |
453 | press_tab_visible = true; |
454 | } | |
455 | ||
c2b32159 | 456 | if (use_color) |
e22c60a9 | 457 | (void) loop_write(ttyfd, ANSI_NORMAL, SIZE_MAX); |
7f4e0805 LP |
458 | |
459 | new_termios = old_termios; | |
d02d4f83 | 460 | termios_disable_echo(&new_termios); |
7f4e0805 | 461 | |
108dfff2 LP |
462 | r = RET_NERRNO(tcsetattr(ttyfd, TCSADRAIN, &new_termios)); |
463 | if (r < 0) | |
7f4e0805 | 464 | goto finish; |
7f4e0805 LP |
465 | |
466 | reset_tty = true; | |
467 | } | |
468 | ||
70dee475 LP |
469 | pollfd[POLL_TTY] = (struct pollfd) { |
470 | .fd = ttyfd >= 0 ? ttyfd : STDIN_FILENO, | |
471 | .events = POLLIN, | |
472 | }; | |
473 | pollfd[POLL_INOTIFY] = (struct pollfd) { | |
474 | .fd = notify, | |
475 | .events = POLLIN, | |
476 | }; | |
7f4e0805 LP |
477 | |
478 | for (;;) { | |
e1ed99c8 | 479 | _cleanup_(erase_char) char c; |
d9e2af0a | 480 | usec_t timeout; |
7f4e0805 LP |
481 | ssize_t n; |
482 | ||
d9e2af0a YW |
483 | if (until > 0) |
484 | timeout = usec_sub_unsigned(until, now(CLOCK_MONOTONIC)); | |
485 | else | |
486 | timeout = USEC_INFINITY; | |
7f4e0805 | 487 | |
108dfff2 LP |
488 | if (flag_file) { |
489 | r = RET_NERRNO(access(flag_file, F_OK)); | |
490 | if (r < 0) | |
7f4e0805 | 491 | goto finish; |
108dfff2 | 492 | } |
7f4e0805 | 493 | |
d9e2af0a YW |
494 | r = ppoll_usec(pollfd, notify >= 0 ? 2 : 1, timeout); |
495 | if (r == -EINTR) | |
496 | continue; | |
497 | if (r < 0) | |
7f4e0805 | 498 | goto finish; |
d9e2af0a | 499 | if (r == 0) { |
ccc80078 | 500 | r = -ETIME; |
7f4e0805 LP |
501 | goto finish; |
502 | } | |
503 | ||
d08fd4c3 | 504 | if (notify >= 0 && pollfd[POLL_INOTIFY].revents != 0 && keyring) { |
665dfe93 | 505 | (void) flush_fd(notify); |
7f4e0805 | 506 | |
d08fd4c3 | 507 | r = ask_password_keyring(req, flags, ret); |
c7b7d74e XF |
508 | if (r >= 0) { |
509 | r = 0; | |
510 | goto finish; | |
511 | } else if (r != -ENOKEY) | |
512 | goto finish; | |
513 | } | |
514 | ||
7f4e0805 LP |
515 | if (pollfd[POLL_TTY].revents == 0) |
516 | continue; | |
517 | ||
981e4cd3 LP |
518 | n = read(ttyfd >= 0 ? ttyfd : STDIN_FILENO, &c, 1); |
519 | if (n < 0) { | |
8add30a0 | 520 | if (ERRNO_IS_TRANSIENT(errno)) |
7f4e0805 LP |
521 | continue; |
522 | ||
523 | r = -errno; | |
524 | goto finish; | |
525 | ||
fd6ac62c | 526 | } |
7f4e0805 | 527 | |
8aaf18e0 ZJS |
528 | if (press_tab_visible) { |
529 | assert(ttyfd >= 0); | |
530 | backspace_chars(ttyfd, strlen(PRESS_TAB)); | |
531 | press_tab_visible = false; | |
532 | } | |
533 | ||
fd6ac62c LP |
534 | /* We treat EOF, newline and NUL byte all as valid end markers */ |
535 | if (n == 0 || c == '\n' || c == 0) | |
7f4e0805 | 536 | break; |
fd6ac62c | 537 | |
d325f244 FB |
538 | if (c == 4) { /* C-d also known as EOT */ |
539 | if (ttyfd >= 0) | |
e22c60a9 | 540 | (void) loop_write(ttyfd, SKIPPED, SIZE_MAX); |
d325f244 FB |
541 | |
542 | goto skipped; | |
543 | } | |
544 | ||
fd6ac62c | 545 | if (c == 21) { /* C-u */ |
7f4e0805 | 546 | |
9cb5bf91 | 547 | if (!FLAGS_SET(flags, ASK_PASSWORD_SILENT)) |
8e9d1eec | 548 | (void) backspace_string(ttyfd, passphrase); |
fd6ac62c | 549 | |
87f54463 | 550 | explicit_bzero_safe(passphrase, sizeof(passphrase)); |
fd6ac62c | 551 | p = codepoint = 0; |
7f4e0805 | 552 | |
4c701096 | 553 | } else if (IN_SET(c, '\b', 127)) { |
58fc840b LP |
554 | |
555 | if (p > 0) { | |
fd6ac62c | 556 | size_t q; |
58fc840b | 557 | |
9cb5bf91 | 558 | if (!FLAGS_SET(flags, ASK_PASSWORD_SILENT)) |
8e9d1eec | 559 | (void) backspace_chars(ttyfd, 1); |
58fc840b | 560 | |
92e068b4 ZJS |
561 | /* Remove a full UTF-8 codepoint from the end. For that, figure out where the |
562 | * last one begins */ | |
fd6ac62c LP |
563 | q = 0; |
564 | for (;;) { | |
37ca78a3 | 565 | int z; |
fd6ac62c | 566 | |
f5fbe71d | 567 | z = utf8_encoded_valid_unichar(passphrase + q, SIZE_MAX); |
37ca78a3 | 568 | if (z <= 0) { |
f5fbe71d | 569 | q = SIZE_MAX; /* Invalid UTF8! */ |
fd6ac62c LP |
570 | break; |
571 | } | |
572 | ||
573 | if (q + z >= p) /* This one brings us over the edge */ | |
574 | break; | |
575 | ||
576 | q += z; | |
577 | } | |
578 | ||
f5fbe71d | 579 | p = codepoint = q == SIZE_MAX ? p - 1 : q; |
87f54463 | 580 | explicit_bzero_safe(passphrase + p, sizeof(passphrase) - p); |
fd6ac62c | 581 | |
9cb5bf91 | 582 | } else if (!dirty && !FLAGS_SET(flags, ASK_PASSWORD_SILENT)) { |
441dfe09 | 583 | |
e287086b | 584 | flags |= ASK_PASSWORD_SILENT; |
441dfe09 | 585 | |
92e068b4 ZJS |
586 | /* There are two ways to enter silent mode. Either by pressing backspace as |
587 | * first key (and only as first key), or ... */ | |
fd6ac62c | 588 | |
441dfe09 | 589 | if (ttyfd >= 0) |
e22c60a9 | 590 | (void) loop_write(ttyfd, NO_ECHO, SIZE_MAX); |
441dfe09 | 591 | |
58fc840b | 592 | } else if (ttyfd >= 0) |
e22c60a9 | 593 | (void) loop_write(ttyfd, "\a", 1); |
7f4e0805 | 594 | |
9cb5bf91 | 595 | } else if (c == '\t' && !FLAGS_SET(flags, ASK_PASSWORD_SILENT)) { |
58fc840b | 596 | |
8e9d1eec | 597 | (void) backspace_string(ttyfd, passphrase); |
e287086b | 598 | flags |= ASK_PASSWORD_SILENT; |
58fc840b | 599 | |
441dfe09 LP |
600 | /* ... or by pressing TAB at any time. */ |
601 | ||
58fc840b | 602 | if (ttyfd >= 0) |
e22c60a9 | 603 | (void) loop_write(ttyfd, NO_ECHO, SIZE_MAX); |
036eeac5 | 604 | |
fd6ac62c LP |
605 | } else if (p >= sizeof(passphrase)-1) { |
606 | ||
607 | /* Reached the size limit */ | |
608 | if (ttyfd >= 0) | |
e22c60a9 | 609 | (void) loop_write(ttyfd, "\a", 1); |
fd6ac62c LP |
610 | |
611 | } else { | |
7f4e0805 LP |
612 | passphrase[p++] = c; |
613 | ||
9cb5bf91 | 614 | if (!FLAGS_SET(flags, ASK_PASSWORD_SILENT) && ttyfd >= 0) { |
fd6ac62c | 615 | /* Check if we got a complete UTF-8 character now. If so, let's output one '*'. */ |
f5fbe71d | 616 | n = utf8_encoded_valid_unichar(passphrase + codepoint, SIZE_MAX); |
f3149d57 | 617 | if (n >= 0) { |
9cb5bf91 | 618 | if (FLAGS_SET(flags, ASK_PASSWORD_ECHO)) |
e22c60a9 | 619 | (void) loop_write(ttyfd, passphrase + codepoint, n); |
d26eef92 | 620 | else |
e22c60a9 MY |
621 | (void) loop_write(ttyfd, |
622 | special_glyph(SPECIAL_GLYPH_BULLET), | |
623 | SIZE_MAX); | |
f3149d57 | 624 | codepoint = p; |
f3149d57 ZJS |
625 | } |
626 | } | |
441dfe09 LP |
627 | |
628 | dirty = true; | |
7f4e0805 LP |
629 | } |
630 | } | |
631 | ||
981e4cd3 LP |
632 | x = strndup(passphrase, p); |
633 | if (!x) { | |
7f4e0805 LP |
634 | r = -ENOMEM; |
635 | goto finish; | |
636 | } | |
637 | ||
0e28c86f LP |
638 | r = strv_consume(&l, x); |
639 | if (r < 0) | |
c7b7d74e | 640 | goto finish; |
c7b7d74e | 641 | |
d325f244 | 642 | skipped: |
72c08a47 ZJS |
643 | if (strv_isempty(l)) |
644 | r = log_debug_errno(SYNTHETIC_ERRNO(ECANCELED), "Password query was cancelled."); | |
645 | else { | |
d08fd4c3 LP |
646 | if (keyring) |
647 | (void) add_to_keyring_and_log(keyring, flags, l); | |
72c08a47 ZJS |
648 | |
649 | *ret = TAKE_PTR(l); | |
650 | r = 0; | |
651 | } | |
7f4e0805 LP |
652 | |
653 | finish: | |
981e4cd3 | 654 | if (ttyfd >= 0 && reset_tty) { |
e22c60a9 | 655 | (void) loop_write(ttyfd, "\n", 1); |
ac7a9674 | 656 | (void) tcsetattr(ttyfd, TCSADRAIN, &old_termios); |
7f4e0805 LP |
657 | } |
658 | ||
659 | return r; | |
660 | } | |
661 | ||
15a3e96f LP |
662 | static int create_socket(char **ret) { |
663 | _cleanup_free_ char *path = NULL; | |
f36a9d59 ZJS |
664 | union sockaddr_union sa; |
665 | socklen_t sa_len; | |
254d1313 | 666 | _cleanup_close_ int fd = -EBADF; |
f36a9d59 | 667 | int r; |
7f4e0805 | 668 | |
15a3e96f | 669 | assert(ret); |
7f4e0805 | 670 | |
e62d8c39 | 671 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
4a62c710 | 672 | if (fd < 0) |
00843602 | 673 | return -errno; |
7f4e0805 | 674 | |
15a3e96f LP |
675 | if (asprintf(&path, "/run/systemd/ask-password/sck.%" PRIx64, random_u64()) < 0) |
676 | return -ENOMEM; | |
677 | ||
f36a9d59 ZJS |
678 | r = sockaddr_un_set_path(&sa.un, path); |
679 | if (r < 0) | |
680 | return r; | |
681 | sa_len = r; | |
7f4e0805 | 682 | |
2053593f | 683 | WITH_UMASK(0177) |
f36a9d59 | 684 | if (bind(fd, &sa.sa, sa_len) < 0) |
00843602 | 685 | return -errno; |
1d6702e8 | 686 | |
2ff48e98 LP |
687 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
688 | if (r < 0) | |
689 | return r; | |
7f4e0805 | 690 | |
15a3e96f LP |
691 | *ret = TAKE_PTR(path); |
692 | return TAKE_FD(fd); | |
7f4e0805 LP |
693 | } |
694 | ||
7f4e0805 | 695 | int ask_password_agent( |
d08fd4c3 | 696 | const AskPasswordRequest *req, |
7f4e0805 | 697 | usec_t until, |
e287086b LP |
698 | AskPasswordFlags flags, |
699 | char ***ret) { | |
7f4e0805 LP |
700 | |
701 | enum { | |
702 | FD_SOCKET, | |
703 | FD_SIGNAL, | |
c7b7d74e | 704 | FD_INOTIFY, |
7f4e0805 LP |
705 | _FD_MAX |
706 | }; | |
707 | ||
254d1313 | 708 | _cleanup_close_ int socket_fd = -EBADF, signal_fd = -EBADF, notify = -EBADF, fd = -EBADF; |
2b583ce6 | 709 | char temp[] = "/run/systemd/ask-password/tmp.XXXXXX"; |
7f4e0805 | 710 | char final[sizeof(temp)] = ""; |
981e4cd3 | 711 | _cleanup_free_ char *socket_name = NULL; |
c7b7d74e | 712 | _cleanup_strv_free_erase_ char **l = NULL; |
e287086b | 713 | _cleanup_fclose_ FILE *f = NULL; |
7f4e0805 | 714 | struct pollfd pollfd[_FD_MAX]; |
e287086b | 715 | sigset_t mask, oldmask; |
981e4cd3 | 716 | int r; |
7f4e0805 | 717 | |
e287086b | 718 | assert(ret); |
21bc923a | 719 | |
b2ac9280 LP |
720 | if (FLAGS_SET(flags, ASK_PASSWORD_HEADLESS)) |
721 | return -ENOEXEC; | |
722 | ||
9cb5bf91 | 723 | if (FLAGS_SET(flags, ASK_PASSWORD_NO_AGENT)) |
e287086b | 724 | return -EUNATCH; |
00843602 | 725 | |
72c0a2c2 | 726 | assert_se(sigemptyset(&mask) >= 0); |
db7136ec | 727 | assert_se(sigset_add_many(&mask, SIGINT, SIGTERM) >= 0); |
72c0a2c2 | 728 | assert_se(sigprocmask(SIG_BLOCK, &mask, &oldmask) >= 0); |
f9b72cd8 | 729 | |
00843602 | 730 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
7f4e0805 | 731 | |
d08fd4c3 LP |
732 | if (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED) && req && req->keyring) { |
733 | r = ask_password_keyring(req, flags, ret); | |
c7b7d74e XF |
734 | if (r >= 0) { |
735 | r = 0; | |
736 | goto finish; | |
737 | } else if (r != -ENOKEY) | |
738 | goto finish; | |
739 | ||
740 | notify = inotify_init1(IN_CLOEXEC | IN_NONBLOCK); | |
741 | if (notify < 0) { | |
742 | r = -errno; | |
743 | goto finish; | |
744 | } | |
108dfff2 LP |
745 | |
746 | r = RET_NERRNO(inotify_add_watch(notify, "/run/systemd/ask-password", IN_ATTRIB /* for mtime */)); | |
747 | if (r < 0) | |
c7b7d74e | 748 | goto finish; |
c7b7d74e XF |
749 | } |
750 | ||
646853bd | 751 | fd = mkostemp_safe(temp); |
1d6702e8 | 752 | if (fd < 0) { |
709f6e46 | 753 | r = fd; |
7f4e0805 LP |
754 | goto finish; |
755 | } | |
756 | ||
00843602 | 757 | (void) fchmod(fd, 0644); |
7f4e0805 | 758 | |
4fa744a3 | 759 | f = take_fdopen(&fd, "w"); |
981e4cd3 | 760 | if (!f) { |
00843602 | 761 | r = -errno; |
7f4e0805 LP |
762 | goto finish; |
763 | } | |
764 | ||
981e4cd3 LP |
765 | signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
766 | if (signal_fd < 0) { | |
00843602 | 767 | r = -errno; |
7f4e0805 LP |
768 | goto finish; |
769 | } | |
770 | ||
981e4cd3 LP |
771 | socket_fd = create_socket(&socket_name); |
772 | if (socket_fd < 0) { | |
7f4e0805 LP |
773 | r = socket_fd; |
774 | goto finish; | |
775 | } | |
776 | ||
777 | fprintf(f, | |
778 | "[Ask]\n" | |
de0671ee | 779 | "PID="PID_FMT"\n" |
7f4e0805 | 780 | "Socket=%s\n" |
21bc923a | 781 | "AcceptCached=%i\n" |
64845bdc | 782 | "Echo=%i\n" |
1fa94a31 SB |
783 | "NotAfter="USEC_FMT"\n" |
784 | "Silent=%i\n", | |
df0ff127 | 785 | getpid_cached(), |
7f4e0805 | 786 | socket_name, |
9cb5bf91 CH |
787 | FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED), |
788 | FLAGS_SET(flags, ASK_PASSWORD_ECHO), | |
1fa94a31 | 789 | until, |
9cb5bf91 | 790 | FLAGS_SET(flags, ASK_PASSWORD_SILENT)); |
7f4e0805 | 791 | |
d08fd4c3 LP |
792 | if (req) { |
793 | if (req->message) | |
794 | fprintf(f, "Message=%s\n", req->message); | |
7f4e0805 | 795 | |
d08fd4c3 LP |
796 | if (req->icon) |
797 | fprintf(f, "Icon=%s\n", req->icon); | |
7f4e0805 | 798 | |
d08fd4c3 LP |
799 | if (req->id) |
800 | fprintf(f, "Id=%s\n", req->id); | |
801 | } | |
9fa1de96 | 802 | |
dacd6cee | 803 | r = fflush_and_check(f); |
00843602 | 804 | if (r < 0) |
7f4e0805 | 805 | goto finish; |
7f4e0805 LP |
806 | |
807 | memcpy(final, temp, sizeof(temp)); | |
808 | ||
809 | final[sizeof(final)-11] = 'a'; | |
810 | final[sizeof(final)-10] = 's'; | |
811 | final[sizeof(final)-9] = 'k'; | |
812 | ||
108dfff2 LP |
813 | r = RET_NERRNO(rename(temp, final)); |
814 | if (r < 0) | |
7f4e0805 | 815 | goto finish; |
7f4e0805 LP |
816 | |
817 | zero(pollfd); | |
818 | pollfd[FD_SOCKET].fd = socket_fd; | |
819 | pollfd[FD_SOCKET].events = POLLIN; | |
820 | pollfd[FD_SIGNAL].fd = signal_fd; | |
821 | pollfd[FD_SIGNAL].events = POLLIN; | |
c7b7d74e XF |
822 | pollfd[FD_INOTIFY].fd = notify; |
823 | pollfd[FD_INOTIFY].events = POLLIN; | |
7f4e0805 LP |
824 | |
825 | for (;;) { | |
fb29cdbe | 826 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred))) control; |
7f4e0805 | 827 | char passphrase[LINE_MAX+1]; |
7f4e0805 LP |
828 | struct iovec iovec; |
829 | struct ucred *ucred; | |
d9e2af0a | 830 | usec_t timeout; |
7f4e0805 | 831 | ssize_t n; |
7f4e0805 | 832 | |
d9e2af0a YW |
833 | if (until > 0) |
834 | timeout = usec_sub_unsigned(until, now(CLOCK_MONOTONIC)); | |
835 | else | |
836 | timeout = USEC_INFINITY; | |
7f4e0805 | 837 | |
d9e2af0a YW |
838 | r = ppoll_usec(pollfd, notify >= 0 ? _FD_MAX : _FD_MAX - 1, timeout); |
839 | if (r == -EINTR) | |
840 | continue; | |
841 | if (r < 0) | |
7f4e0805 | 842 | goto finish; |
d9e2af0a | 843 | if (r == 0) { |
7f4e0805 LP |
844 | r = -ETIME; |
845 | goto finish; | |
846 | } | |
847 | ||
21bc923a LP |
848 | if (pollfd[FD_SIGNAL].revents & POLLIN) { |
849 | r = -EINTR; | |
850 | goto finish; | |
851 | } | |
7f4e0805 | 852 | |
c7b7d74e XF |
853 | if (notify >= 0 && pollfd[FD_INOTIFY].revents != 0) { |
854 | (void) flush_fd(notify); | |
855 | ||
d08fd4c3 LP |
856 | if (req && req->keyring) { |
857 | r = ask_password_keyring(req, flags, ret); | |
858 | if (r >= 0) { | |
859 | r = 0; | |
860 | goto finish; | |
861 | } else if (r != -ENOKEY) | |
862 | goto finish; | |
863 | } | |
c7b7d74e XF |
864 | } |
865 | ||
866 | if (pollfd[FD_SOCKET].revents == 0) | |
867 | continue; | |
868 | ||
7f4e0805 | 869 | if (pollfd[FD_SOCKET].revents != POLLIN) { |
7f4e0805 LP |
870 | r = -EIO; |
871 | goto finish; | |
872 | } | |
873 | ||
5cfa2c3d | 874 | iovec = IOVEC_MAKE(passphrase, sizeof(passphrase)); |
7f4e0805 | 875 | |
41ab8c67 LP |
876 | struct msghdr msghdr = { |
877 | .msg_iov = &iovec, | |
878 | .msg_iovlen = 1, | |
879 | .msg_control = &control, | |
880 | .msg_controllen = sizeof(control), | |
881 | }; | |
7f4e0805 | 882 | |
3691bcf3 | 883 | n = recvmsg_safe(socket_fd, &msghdr, 0); |
bb44fd07 ZJS |
884 | if (ERRNO_IS_NEG_TRANSIENT(n)) |
885 | continue; | |
ad501930 MY |
886 | if (n == -ECHRNG) { |
887 | log_debug_errno(n, "Got message with truncated control data (unexpected fds sent?), ignoring."); | |
bb44fd07 | 888 | continue; |
ad501930 MY |
889 | } |
890 | if (n == -EXFULL) { | |
891 | log_debug_errno(n, "Got message with truncated payload data, ignoring."); | |
892 | continue; | |
893 | } | |
894 | if (n < 0) { | |
3691bcf3 | 895 | r = (int) n; |
7f4e0805 LP |
896 | goto finish; |
897 | } | |
898 | ||
692597c8 LP |
899 | CLEANUP_ERASE(passphrase); |
900 | ||
1c8da044 LP |
901 | cmsg_close_all(&msghdr); |
902 | ||
8add30a0 | 903 | if (n == 0) { |
00843602 | 904 | log_debug("Message too short"); |
7f4e0805 LP |
905 | continue; |
906 | } | |
907 | ||
371d72e0 LP |
908 | ucred = CMSG_FIND_DATA(&msghdr, SOL_SOCKET, SCM_CREDENTIALS, struct ucred); |
909 | if (!ucred) { | |
00843602 | 910 | log_debug("Received message without credentials. Ignoring."); |
7f4e0805 LP |
911 | continue; |
912 | } | |
913 | ||
7f4e0805 | 914 | if (ucred->uid != 0) { |
00843602 | 915 | log_debug("Got request from unprivileged user. Ignoring."); |
7f4e0805 LP |
916 | continue; |
917 | } | |
918 | ||
919 | if (passphrase[0] == '+') { | |
e287086b | 920 | /* An empty message refers to the empty password */ |
8254a475 | 921 | if (n == 1) |
bea1a013 | 922 | l = strv_new(""); |
8254a475 LP |
923 | else |
924 | l = strv_parse_nulstr(passphrase+1, n-1); | |
8254a475 | 925 | if (!l) { |
7f4e0805 LP |
926 | r = -ENOMEM; |
927 | goto finish; | |
928 | } | |
929 | ||
58629001 | 930 | if (strv_isempty(l)) { |
e287086b | 931 | l = strv_free(l); |
00843602 | 932 | log_debug("Invalid packet"); |
21bc923a LP |
933 | continue; |
934 | } | |
935 | ||
e287086b LP |
936 | break; |
937 | } | |
21bc923a | 938 | |
e287086b | 939 | if (passphrase[0] == '-') { |
7f4e0805 LP |
940 | r = -ECANCELED; |
941 | goto finish; | |
7f4e0805 LP |
942 | } |
943 | ||
e287086b | 944 | log_debug("Invalid packet"); |
7f4e0805 LP |
945 | } |
946 | ||
d08fd4c3 LP |
947 | if (req && req->keyring) |
948 | (void) add_to_keyring_and_log(req->keyring, flags, l); | |
e287086b | 949 | |
ae2a15bc | 950 | *ret = TAKE_PTR(l); |
7f4e0805 LP |
951 | r = 0; |
952 | ||
953 | finish: | |
981e4cd3 | 954 | if (socket_name) |
00843602 | 955 | (void) unlink(socket_name); |
7f4e0805 | 956 | |
00843602 | 957 | (void) unlink(temp); |
7f4e0805 LP |
958 | |
959 | if (final[0]) | |
00843602 | 960 | (void) unlink(final); |
7f4e0805 | 961 | |
f9b72cd8 | 962 | assert_se(sigprocmask(SIG_SETMASK, &oldmask, NULL) == 0); |
7f4e0805 LP |
963 | return r; |
964 | } | |
260ab287 | 965 | |
d08fd4c3 | 966 | static int ask_password_credential(const AskPasswordRequest *req, AskPasswordFlags flags, char ***ret) { |
8806bb4b | 967 | _cleanup_(erase_and_freep) char *buffer = NULL; |
623a8b19 | 968 | _cleanup_strv_free_erase_ char **l = NULL; |
8806bb4b | 969 | size_t size; |
8806bb4b LP |
970 | int r; |
971 | ||
d08fd4c3 LP |
972 | assert(req); |
973 | assert(req->credential); | |
8806bb4b LP |
974 | assert(ret); |
975 | ||
d08fd4c3 | 976 | r = read_credential(req->credential, (void**) &buffer, &size); |
8806bb4b LP |
977 | if (IN_SET(r, -ENXIO, -ENOENT)) /* No credentials passed or this credential not defined? */ |
978 | return -ENOKEY; | |
979 | ||
980 | l = strv_parse_nulstr(buffer, size); | |
981 | if (!l) | |
982 | return -ENOMEM; | |
983 | ||
623a8b19 YW |
984 | if (strv_isempty(l)) |
985 | return log_debug_errno(SYNTHETIC_ERRNO(ENOKEY), "Found an empty password in credential."); | |
986 | ||
987 | *ret = TAKE_PTR(l); | |
8806bb4b LP |
988 | return 0; |
989 | } | |
990 | ||
00843602 | 991 | int ask_password_auto( |
d08fd4c3 | 992 | const AskPasswordRequest *req, |
00843602 | 993 | usec_t until, |
e287086b LP |
994 | AskPasswordFlags flags, |
995 | char ***ret) { | |
00843602 LP |
996 | |
997 | int r; | |
998 | ||
e287086b | 999 | assert(ret); |
21bc923a | 1000 | |
d08fd4c3 LP |
1001 | if (!FLAGS_SET(flags, ASK_PASSWORD_NO_CREDENTIAL) && req && req->credential) { |
1002 | r = ask_password_credential(req, flags, ret); | |
8806bb4b LP |
1003 | if (r != -ENOKEY) |
1004 | return r; | |
1005 | } | |
1006 | ||
9cb5bf91 | 1007 | if (FLAGS_SET(flags, ASK_PASSWORD_ACCEPT_CACHED) && |
d08fd4c3 | 1008 | req && req->keyring && |
300b7e76 | 1009 | (FLAGS_SET(flags, ASK_PASSWORD_NO_TTY) || !isatty_safe(STDIN_FILENO)) && |
9cb5bf91 | 1010 | FLAGS_SET(flags, ASK_PASSWORD_NO_AGENT)) { |
d08fd4c3 | 1011 | r = ask_password_keyring(req, flags, ret); |
e287086b LP |
1012 | if (r != -ENOKEY) |
1013 | return r; | |
1014 | } | |
1015 | ||
300b7e76 | 1016 | if (!FLAGS_SET(flags, ASK_PASSWORD_NO_TTY) && isatty_safe(STDIN_FILENO)) |
d08fd4c3 | 1017 | return ask_password_tty(-EBADF, req, until, flags, NULL, ret); |
00843602 | 1018 | |
9cb5bf91 | 1019 | if (!FLAGS_SET(flags, ASK_PASSWORD_NO_AGENT)) |
d08fd4c3 | 1020 | return ask_password_agent(req, until, flags, ret); |
e287086b LP |
1021 | |
1022 | return -EUNATCH; | |
260ab287 | 1023 | } |