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3d7415f4 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2015 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 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 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <sys/prctl.h> | |
23 | ||
24 | #include "sd-bus.h" | |
25 | #include "util.h" | |
26 | #include "strv.h" | |
27 | #include "bus-util.h" | |
28 | #include "bus-common-errors.h" | |
29 | #include "def.h" | |
7079cfef LP |
30 | #include "socket-util.h" |
31 | #include "mkdir.h" | |
3d7415f4 | 32 | #include "import-util.h" |
a97dcc12 | 33 | #include "def.h" |
3d7415f4 LP |
34 | |
35 | typedef struct Transfer Transfer; | |
36 | typedef struct Manager Manager; | |
37 | ||
38 | typedef enum TransferType { | |
39 | TRANSFER_TAR, | |
40 | TRANSFER_RAW, | |
41 | TRANSFER_DKR, | |
42 | _TRANSFER_TYPE_MAX, | |
43 | _TRANSFER_TYPE_INVALID = -1, | |
44 | } TransferType; | |
45 | ||
46 | struct Transfer { | |
47 | Manager *manager; | |
48 | ||
49 | uint32_t id; | |
50 | char *object_path; | |
51 | ||
52 | TransferType type; | |
53 | ImportVerify verify; | |
54 | ||
55 | char *remote; | |
56 | char *local; | |
57 | bool force_local; | |
58 | ||
59 | char *dkr_index_url; | |
60 | ||
61 | pid_t pid; | |
62 | ||
63 | int log_fd; | |
64 | ||
65 | char log_message[LINE_MAX]; | |
66 | size_t log_message_size; | |
67 | ||
68 | sd_event_source *pid_event_source; | |
69 | sd_event_source *log_event_source; | |
70 | ||
71 | unsigned n_canceled; | |
7079cfef | 72 | unsigned progress_percent; |
3d7415f4 LP |
73 | }; |
74 | ||
75 | struct Manager { | |
76 | sd_event *event; | |
77 | sd_bus *bus; | |
78 | ||
79 | uint32_t current_transfer_id; | |
80 | Hashmap *transfers; | |
81 | ||
82 | Hashmap *polkit_registry; | |
7079cfef LP |
83 | |
84 | int notify_fd; | |
85 | ||
86 | sd_event_source *notify_event_source; | |
3d7415f4 LP |
87 | }; |
88 | ||
89 | #define TRANSFERS_MAX 64 | |
90 | ||
91 | static const char* const transfer_type_table[_TRANSFER_TYPE_MAX] = { | |
92 | [TRANSFER_TAR] = "tar", | |
93 | [TRANSFER_RAW] = "raw", | |
94 | [TRANSFER_DKR] = "dkr", | |
95 | }; | |
96 | ||
b9a5f858 | 97 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(transfer_type, TransferType); |
3d7415f4 LP |
98 | |
99 | static Transfer *transfer_unref(Transfer *t) { | |
100 | if (!t) | |
101 | return NULL; | |
102 | ||
103 | if (t->manager) | |
104 | hashmap_remove(t->manager->transfers, UINT32_TO_PTR(t->id)); | |
105 | ||
106 | sd_event_source_unref(t->pid_event_source); | |
107 | sd_event_source_unref(t->log_event_source); | |
108 | ||
109 | free(t->remote); | |
110 | free(t->local); | |
111 | free(t->dkr_index_url); | |
112 | free(t->object_path); | |
113 | ||
114 | if (t->pid > 0) { | |
115 | (void) kill_and_sigcont(t->pid, SIGKILL); | |
116 | (void) wait_for_terminate(t->pid, NULL); | |
117 | } | |
118 | ||
119 | safe_close(t->log_fd); | |
120 | ||
121 | free(t); | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | DEFINE_TRIVIAL_CLEANUP_FUNC(Transfer*, transfer_unref); | |
126 | ||
127 | static int transfer_new(Manager *m, Transfer **ret) { | |
128 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
129 | uint32_t id; | |
130 | int r; | |
131 | ||
132 | assert(m); | |
133 | assert(ret); | |
134 | ||
135 | if (hashmap_size(m->transfers) >= TRANSFERS_MAX) | |
136 | return -E2BIG; | |
137 | ||
138 | r = hashmap_ensure_allocated(&m->transfers, &trivial_hash_ops); | |
139 | if (r < 0) | |
140 | return r; | |
141 | ||
142 | t = new0(Transfer, 1); | |
143 | if (!t) | |
144 | return -ENOMEM; | |
145 | ||
146 | t->type = _TRANSFER_TYPE_INVALID; | |
147 | t->log_fd = -1; | |
148 | ||
149 | id = m->current_transfer_id + 1; | |
150 | ||
151 | if (asprintf(&t->object_path, "/org/freedesktop/import1/transfer/_%" PRIu32, id) < 0) | |
152 | return -ENOMEM; | |
153 | ||
154 | r = hashmap_put(m->transfers, UINT32_TO_PTR(id), t); | |
155 | if (r < 0) | |
156 | return r; | |
157 | ||
158 | m->current_transfer_id = id; | |
159 | ||
160 | t->manager = m; | |
161 | t->id = id; | |
162 | ||
163 | *ret = t; | |
164 | t = NULL; | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | static void transfer_send_log_line(Transfer *t, const char *line) { | |
170 | int r, priority = LOG_INFO; | |
171 | ||
172 | assert(t); | |
173 | assert(line); | |
174 | ||
175 | syslog_parse_priority(&line, &priority, true); | |
176 | ||
09d46cfd | 177 | log_full(priority, "(transfer%" PRIu32 ") %s", t->id, line); |
3d7415f4 LP |
178 | |
179 | r = sd_bus_emit_signal( | |
180 | t->manager->bus, | |
181 | t->object_path, | |
182 | "org.freedesktop.import1.Transfer", | |
183 | "LogMessage", | |
184 | "us", | |
185 | priority, | |
186 | line); | |
187 | if (r < 0) | |
188 | log_error_errno(r, "Cannot emit message: %m"); | |
189 | } | |
190 | ||
191 | static void transfer_send_logs(Transfer *t, bool flush) { | |
192 | assert(t); | |
193 | ||
194 | /* Try to send out all log messages, if we can. But if we | |
195 | * can't we remove the messages from the buffer, but don't | |
196 | * fail */ | |
197 | ||
198 | while (t->log_message_size > 0) { | |
199 | _cleanup_free_ char *n = NULL; | |
200 | char *e; | |
201 | ||
202 | if (t->log_message_size >= sizeof(t->log_message)) | |
203 | e = t->log_message + sizeof(t->log_message); | |
204 | else { | |
205 | char *a, *b; | |
206 | ||
207 | a = memchr(t->log_message, 0, t->log_message_size); | |
208 | b = memchr(t->log_message, '\n', t->log_message_size); | |
209 | ||
210 | if (a && b) | |
211 | e = a < b ? a : b; | |
212 | else if (a) | |
213 | e = a; | |
214 | else | |
215 | e = b; | |
216 | } | |
217 | ||
218 | if (!e) { | |
219 | if (!flush) | |
220 | return; | |
221 | ||
222 | e = t->log_message + t->log_message_size; | |
223 | } | |
224 | ||
225 | n = strndup(t->log_message, e - t->log_message); | |
226 | ||
227 | /* Skip over NUL and newlines */ | |
228 | while (e < t->log_message + t->log_message_size && (*e == 0 || *e == '\n')) | |
229 | e++; | |
230 | ||
231 | memmove(t->log_message, e, t->log_message + sizeof(t->log_message) - e); | |
232 | t->log_message_size -= e - t->log_message; | |
233 | ||
234 | if (!n) { | |
235 | log_oom(); | |
236 | continue; | |
237 | } | |
238 | ||
239 | if (isempty(n)) | |
240 | continue; | |
241 | ||
242 | transfer_send_log_line(t, n); | |
243 | } | |
244 | } | |
245 | ||
246 | static int transfer_finalize(Transfer *t, bool success) { | |
247 | int r; | |
248 | ||
249 | assert(t); | |
250 | ||
251 | transfer_send_logs(t, true); | |
252 | ||
253 | r = sd_bus_emit_signal( | |
254 | t->manager->bus, | |
255 | "/org/freedesktop/import1", | |
256 | "org.freedesktop.import1.Manager", | |
257 | "TransferRemoved", | |
258 | "uos", | |
259 | t->id, | |
260 | t->object_path, | |
261 | success ? "done" : | |
262 | t->n_canceled > 0 ? "canceled" : "failed"); | |
263 | ||
264 | if (r < 0) | |
265 | log_error_errno(r, "Cannot emit message: %m"); | |
266 | ||
267 | transfer_unref(t); | |
268 | return 0; | |
269 | } | |
270 | ||
271 | static int transfer_cancel(Transfer *t) { | |
272 | int r; | |
273 | ||
274 | assert(t); | |
275 | ||
276 | r = kill_and_sigcont(t->pid, t->n_canceled < 3 ? SIGTERM : SIGKILL); | |
277 | if (r < 0) | |
278 | return r; | |
279 | ||
280 | t->n_canceled++; | |
281 | return 0; | |
282 | } | |
283 | ||
284 | static int transfer_on_pid(sd_event_source *s, const siginfo_t *si, void *userdata) { | |
285 | Transfer *t = userdata; | |
286 | bool success = false; | |
287 | ||
288 | assert(s); | |
289 | assert(t); | |
290 | ||
291 | if (si->si_code == CLD_EXITED) { | |
292 | if (si->si_status != 0) | |
293 | log_error("Import process failed with exit code %i.", si->si_status); | |
294 | else { | |
295 | log_debug("Import process succeeded."); | |
296 | success = true; | |
297 | } | |
298 | ||
299 | } else if (si->si_code == CLD_KILLED || | |
300 | si->si_code == CLD_DUMPED) | |
301 | ||
302 | log_error("Import process terminated by signal %s.", signal_to_string(si->si_status)); | |
303 | else | |
304 | log_error("Import process failed due to unknown reason."); | |
305 | ||
306 | t->pid = 0; | |
307 | ||
308 | return transfer_finalize(t, success); | |
309 | } | |
310 | ||
311 | static int transfer_on_log(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
312 | Transfer *t = userdata; | |
313 | ssize_t l; | |
314 | ||
315 | assert(s); | |
316 | assert(t); | |
317 | ||
318 | l = read(fd, t->log_message + t->log_message_size, sizeof(t->log_message) - t->log_message_size); | |
319 | if (l <= 0) { | |
320 | /* EOF/read error. We just close the pipe here, and | |
321 | * close the watch, waiting for the SIGCHLD to arrive, | |
322 | * before we do anything else. */ | |
323 | ||
324 | if (l < 0) | |
325 | log_error_errno(errno, "Failed to read log message: %m"); | |
326 | ||
327 | t->log_event_source = sd_event_source_unref(t->log_event_source); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | t->log_message_size += l; | |
332 | ||
333 | transfer_send_logs(t, false); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | static int transfer_start(Transfer *t) { | |
339 | _cleanup_close_pair_ int pipefd[2] = { -1, -1 }; | |
340 | int r; | |
341 | ||
342 | assert(t); | |
343 | assert(t->pid <= 0); | |
344 | ||
345 | if (pipe2(pipefd, O_CLOEXEC) < 0) | |
346 | return -errno; | |
347 | ||
348 | t->pid = fork(); | |
349 | if (t->pid < 0) | |
350 | return -errno; | |
351 | if (t->pid == 0) { | |
352 | const char *cmd[] = { | |
ff828763 | 353 | "systemd-pull", |
aa9bd499 | 354 | transfer_type_to_string(t->type), |
3d7415f4 LP |
355 | "--verify", |
356 | NULL, /* verify argument */ | |
357 | NULL, /* maybe --force */ | |
358 | NULL, /* maybe --dkr-index-url */ | |
359 | NULL, /* the actual URL */ | |
360 | NULL, /* remote */ | |
361 | NULL, /* local */ | |
362 | NULL | |
363 | }; | |
364 | int null_fd; | |
365 | unsigned k = 3; | |
366 | ||
367 | /* Child */ | |
368 | ||
369 | reset_all_signal_handlers(); | |
370 | reset_signal_mask(); | |
371 | assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); | |
372 | ||
373 | pipefd[0] = safe_close(pipefd[0]); | |
374 | ||
375 | if (dup2(pipefd[1], STDOUT_FILENO) != STDOUT_FILENO) { | |
376 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
377 | _exit(EXIT_FAILURE); | |
378 | } | |
379 | ||
380 | if (dup2(pipefd[1], STDERR_FILENO) != STDERR_FILENO) { | |
381 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
382 | _exit(EXIT_FAILURE); | |
383 | } | |
384 | ||
385 | if (pipefd[1] != STDOUT_FILENO && pipefd[1] != STDERR_FILENO) | |
386 | pipefd[1] = safe_close(pipefd[1]); | |
387 | ||
388 | null_fd = open("/dev/null", O_RDONLY|O_NOCTTY); | |
389 | if (null_fd < 0) { | |
390 | log_error_errno(errno, "Failed to open /dev/null: %m"); | |
391 | _exit(EXIT_FAILURE); | |
392 | } | |
393 | ||
394 | if (dup2(null_fd, STDIN_FILENO) != STDIN_FILENO) { | |
395 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
396 | _exit(EXIT_FAILURE); | |
397 | } | |
398 | ||
399 | if (null_fd != STDIN_FILENO) | |
400 | safe_close(null_fd); | |
401 | ||
402 | fd_cloexec(STDIN_FILENO, false); | |
403 | fd_cloexec(STDOUT_FILENO, false); | |
404 | fd_cloexec(STDERR_FILENO, false); | |
405 | ||
7079cfef LP |
406 | setenv("SYSTEMD_LOG_TARGET", "console-prefixed", 1); |
407 | setenv("NOTIFY_SOCKET", "/run/systemd/import/notify", 1); | |
3d7415f4 LP |
408 | |
409 | cmd[k++] = import_verify_to_string(t->verify); | |
410 | if (t->force_local) | |
411 | cmd[k++] = "--force"; | |
412 | ||
413 | if (t->dkr_index_url) { | |
414 | cmd[k++] = "--dkr-index-url"; | |
415 | cmd[k++] = t->dkr_index_url; | |
416 | } | |
417 | ||
418 | cmd[k++] = t->remote; | |
419 | if (t->local) | |
420 | cmd[k++] = t->local; | |
421 | cmd[k] = NULL; | |
422 | ||
ff828763 | 423 | execv(SYSTEMD_PULL_PATH, (char * const *) cmd); |
3d7415f4 LP |
424 | log_error_errno(errno, "Failed to execute import tool: %m"); |
425 | _exit(EXIT_FAILURE); | |
426 | } | |
427 | ||
428 | pipefd[1] = safe_close(pipefd[1]); | |
429 | t->log_fd = pipefd[0]; | |
430 | pipefd[0] = -1; | |
431 | ||
432 | r = sd_event_add_child(t->manager->event, &t->pid_event_source, t->pid, WEXITED, transfer_on_pid, t); | |
433 | if (r < 0) | |
434 | return r; | |
435 | ||
436 | r = sd_event_add_io(t->manager->event, &t->log_event_source, t->log_fd, EPOLLIN, transfer_on_log, t); | |
437 | if (r < 0) | |
438 | return r; | |
439 | ||
440 | /* Make sure always process logging before SIGCHLD */ | |
441 | r = sd_event_source_set_priority(t->log_event_source, SD_EVENT_PRIORITY_NORMAL -5); | |
442 | if (r < 0) | |
443 | return r; | |
444 | ||
445 | r = sd_bus_emit_signal( | |
446 | t->manager->bus, | |
447 | "/org/freedesktop/import1", | |
448 | "org.freedesktop.import1.Manager", | |
449 | "TransferNew", | |
450 | "uo", | |
451 | t->id, | |
452 | t->object_path); | |
453 | if (r < 0) | |
454 | return r; | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | static Manager *manager_unref(Manager *m) { | |
460 | Transfer *t; | |
461 | ||
462 | if (!m) | |
463 | return NULL; | |
464 | ||
7079cfef LP |
465 | sd_event_source_unref(m->notify_event_source); |
466 | safe_close(m->notify_fd); | |
467 | ||
3d7415f4 LP |
468 | while ((t = hashmap_first(m->transfers))) |
469 | transfer_unref(t); | |
470 | ||
471 | hashmap_free(m->transfers); | |
472 | ||
473 | bus_verify_polkit_async_registry_free(m->polkit_registry); | |
474 | ||
475 | sd_bus_close(m->bus); | |
476 | sd_bus_unref(m->bus); | |
477 | sd_event_unref(m->event); | |
478 | ||
479 | free(m); | |
480 | return NULL; | |
481 | } | |
482 | ||
483 | DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref); | |
484 | ||
7079cfef LP |
485 | static int manager_on_notify(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
486 | ||
487 | char buf[NOTIFY_BUFFER_MAX+1]; | |
488 | struct iovec iovec = { | |
489 | .iov_base = buf, | |
490 | .iov_len = sizeof(buf)-1, | |
491 | }; | |
492 | union { | |
493 | struct cmsghdr cmsghdr; | |
494 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
495 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
496 | } control = {}; | |
497 | struct msghdr msghdr = { | |
498 | .msg_iov = &iovec, | |
499 | .msg_iovlen = 1, | |
500 | .msg_control = &control, | |
501 | .msg_controllen = sizeof(control), | |
502 | }; | |
503 | struct ucred *ucred = NULL; | |
504 | Manager *m = userdata; | |
505 | struct cmsghdr *cmsg; | |
506 | unsigned percent; | |
507 | char *p, *e; | |
508 | Transfer *t; | |
509 | Iterator i; | |
510 | ssize_t n; | |
511 | int r; | |
512 | ||
513 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); | |
514 | if (n < 0) { | |
515 | if (errno == EAGAIN || errno == EINTR) | |
516 | return 0; | |
517 | ||
518 | return -errno; | |
519 | } | |
520 | ||
521 | for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) { | |
522 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
523 | close_many((int*) CMSG_DATA(cmsg), (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int)); | |
524 | log_warning("Somebody sent us unexpected fds, ignoring."); | |
525 | return 0; | |
526 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
527 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
528 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
529 | ||
530 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
531 | } | |
532 | } | |
533 | ||
534 | if (msghdr.msg_flags & MSG_TRUNC) { | |
535 | log_warning("Got overly long notification datagram, ignoring."); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | if (!ucred || ucred->pid <= 0) { | |
540 | log_warning("Got notification datagram lacking credential information, ignoring."); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | HASHMAP_FOREACH(t, m->transfers, i) | |
545 | if (ucred->pid == t->pid) | |
546 | break; | |
547 | ||
548 | if (!t) { | |
549 | log_warning("Got notification datagram from unexpected peer, ignoring."); | |
550 | return 0; | |
551 | } | |
552 | ||
553 | buf[n] = 0; | |
554 | ||
555 | p = startswith(buf, "X_IMPORT_PROGRESS="); | |
556 | if (!p) { | |
557 | p = strstr(buf, "\nX_IMPORT_PROGRESS="); | |
558 | if (!p) | |
559 | return 0; | |
560 | ||
561 | p += 19; | |
562 | } | |
563 | ||
564 | e = strchrnul(p, '\n'); | |
565 | *e = 0; | |
566 | ||
567 | r = safe_atou(p, &percent); | |
568 | if (r < 0 || percent > 100) { | |
569 | log_warning("Got invalid percent value, ignoring."); | |
570 | return 0; | |
571 | } | |
572 | ||
573 | t->progress_percent = percent; | |
574 | ||
575 | log_debug("Got percentage from client: %u%%", percent); | |
576 | return 0; | |
577 | } | |
578 | ||
3d7415f4 LP |
579 | static int manager_new(Manager **ret) { |
580 | _cleanup_(manager_unrefp) Manager *m = NULL; | |
7079cfef LP |
581 | static const union sockaddr_union sa = { |
582 | .un.sun_family = AF_UNIX, | |
583 | .un.sun_path = "/run/systemd/import/notify", | |
584 | }; | |
585 | static const int one = 1; | |
3d7415f4 LP |
586 | int r; |
587 | ||
588 | assert(ret); | |
589 | ||
590 | m = new0(Manager, 1); | |
591 | if (!m) | |
592 | return -ENOMEM; | |
593 | ||
594 | r = sd_event_default(&m->event); | |
595 | if (r < 0) | |
596 | return r; | |
597 | ||
598 | sd_event_set_watchdog(m->event, true); | |
599 | ||
600 | r = sd_bus_default_system(&m->bus); | |
601 | if (r < 0) | |
602 | return r; | |
603 | ||
7079cfef LP |
604 | m->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
605 | if (m->notify_fd < 0) | |
606 | return -errno; | |
607 | ||
608 | (void) mkdir_parents_label(sa.un.sun_path, 0755); | |
609 | (void) unlink(sa.un.sun_path); | |
610 | ||
611 | if (bind(m->notify_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path)) < 0) | |
612 | return -errno; | |
613 | ||
614 | if (setsockopt(m->notify_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) | |
615 | return -errno; | |
616 | ||
617 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_on_notify, m); | |
618 | if (r < 0) | |
619 | return r; | |
620 | ||
3d7415f4 LP |
621 | *ret = m; |
622 | m = NULL; | |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
627 | static Transfer *manager_find(Manager *m, TransferType type, const char *dkr_index_url, const char *remote) { | |
628 | Transfer *t; | |
629 | Iterator i; | |
630 | ||
631 | assert(m); | |
632 | assert(type >= 0); | |
633 | assert(type < _TRANSFER_TYPE_MAX); | |
634 | ||
635 | HASHMAP_FOREACH(t, m->transfers, i) { | |
636 | ||
637 | if (t->type == type && | |
638 | streq_ptr(t->remote, remote) && | |
639 | streq_ptr(t->dkr_index_url, dkr_index_url)) | |
640 | return t; | |
641 | } | |
642 | ||
643 | return NULL; | |
644 | } | |
645 | ||
646 | static int method_pull_tar_or_raw(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
647 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
648 | const char *remote, *local, *verify, *object; | |
649 | Manager *m = userdata; | |
650 | ImportVerify v; | |
651 | TransferType type; | |
652 | int force, r; | |
653 | uint32_t id; | |
654 | ||
655 | assert(bus); | |
656 | assert(msg); | |
657 | assert(m); | |
658 | ||
659 | r = bus_verify_polkit_async( | |
660 | msg, | |
661 | CAP_SYS_ADMIN, | |
662 | "org.freedesktop.import1.pull", | |
663 | false, | |
c529695e | 664 | UID_INVALID, |
3d7415f4 LP |
665 | &m->polkit_registry, |
666 | error); | |
667 | if (r < 0) | |
668 | return r; | |
669 | if (r == 0) | |
670 | return 1; /* Will call us back */ | |
671 | ||
672 | r = sd_bus_message_read(msg, "sssb", &remote, &local, &verify, &force); | |
673 | if (r < 0) | |
674 | return r; | |
675 | ||
676 | if (!http_url_is_valid(remote)) | |
677 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "URL %s is invalid", remote); | |
678 | ||
679 | if (isempty(local)) | |
680 | local = NULL; | |
681 | else if (!machine_name_is_valid(local)) | |
682 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local); | |
683 | ||
684 | if (isempty(verify)) | |
685 | v = IMPORT_VERIFY_SIGNATURE; | |
686 | else | |
687 | v = import_verify_from_string(verify); | |
688 | if (v < 0) | |
689 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify); | |
690 | ||
691 | type = streq_ptr(sd_bus_message_get_member(msg), "PullTar") ? TRANSFER_TAR : TRANSFER_RAW; | |
692 | ||
693 | if (manager_find(m, type, NULL, remote)) | |
694 | return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote); | |
695 | ||
696 | r = transfer_new(m, &t); | |
697 | if (r < 0) | |
698 | return r; | |
699 | ||
700 | t->type = type; | |
701 | t->verify = v; | |
702 | t->force_local = force; | |
703 | ||
704 | t->remote = strdup(remote); | |
705 | if (!t->remote) | |
706 | return -ENOMEM; | |
707 | ||
708 | t->local = strdup(local); | |
709 | if (!t->local) | |
710 | return -ENOMEM; | |
711 | ||
712 | r = transfer_start(t); | |
713 | if (r < 0) | |
714 | return r; | |
715 | ||
716 | object = t->object_path; | |
717 | id = t->id; | |
718 | t = NULL; | |
719 | ||
720 | return sd_bus_reply_method_return(msg, "uo", id, object); | |
721 | } | |
722 | ||
723 | static int method_pull_dkr(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
724 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
725 | const char *index_url, *remote, *tag, *local, *verify, *object; | |
726 | Manager *m = userdata; | |
727 | ImportVerify v; | |
728 | int force, r; | |
729 | uint32_t id; | |
730 | ||
731 | assert(bus); | |
732 | assert(msg); | |
733 | assert(m); | |
734 | ||
735 | r = bus_verify_polkit_async( | |
736 | msg, | |
737 | CAP_SYS_ADMIN, | |
738 | "org.freedesktop.import1.pull", | |
739 | false, | |
c529695e | 740 | UID_INVALID, |
3d7415f4 LP |
741 | &m->polkit_registry, |
742 | error); | |
743 | if (r < 0) | |
744 | return r; | |
745 | if (r == 0) | |
746 | return 1; /* Will call us back */ | |
747 | ||
748 | r = sd_bus_message_read(msg, "sssssb", &index_url, &remote, &tag, &local, &verify, &force); | |
749 | if (r < 0) | |
750 | return r; | |
751 | ||
752 | if (isempty(index_url)) | |
753 | index_url = DEFAULT_DKR_INDEX_URL; | |
754 | if (!index_url) | |
755 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL must be specified."); | |
756 | if (!http_url_is_valid(index_url)) | |
757 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL %s is invalid", index_url); | |
758 | ||
759 | if (!dkr_name_is_valid(remote)) | |
760 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Remote name %s is not valid", remote); | |
761 | ||
762 | if (isempty(tag)) | |
763 | tag = "latest"; | |
764 | else if (!dkr_tag_is_valid(tag)) | |
765 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Tag %s is not valid", tag); | |
766 | ||
767 | if (isempty(local)) | |
768 | local = NULL; | |
769 | else if (!machine_name_is_valid(local)) | |
770 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local); | |
771 | ||
772 | if (isempty(verify)) | |
773 | v = IMPORT_VERIFY_SIGNATURE; | |
774 | else | |
775 | v = import_verify_from_string(verify); | |
776 | if (v < 0) | |
777 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify); | |
778 | ||
779 | if (v != IMPORT_VERIFY_NO) | |
780 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "DKR does not support verification."); | |
781 | ||
782 | if (manager_find(m, TRANSFER_DKR, index_url, remote)) | |
783 | return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote); | |
784 | ||
785 | r = transfer_new(m, &t); | |
786 | if (r < 0) | |
787 | return r; | |
788 | ||
789 | t->type = TRANSFER_DKR; | |
790 | t->verify = v; | |
791 | t->force_local = force; | |
792 | ||
793 | t->dkr_index_url = strdup(index_url); | |
794 | if (!t->dkr_index_url) | |
795 | return -ENOMEM; | |
796 | ||
797 | t->remote = strjoin(remote, ":", tag, NULL); | |
798 | if (!t->remote) | |
799 | return -ENOMEM; | |
800 | ||
801 | t->local = strdup(local); | |
802 | if (!t->local) | |
803 | return -ENOMEM; | |
804 | ||
805 | r = transfer_start(t); | |
806 | if (r < 0) | |
807 | return r; | |
808 | ||
809 | object = t->object_path; | |
810 | id = t->id; | |
811 | t = NULL; | |
812 | ||
813 | return sd_bus_reply_method_return(msg, "uo", id, object); | |
814 | } | |
815 | ||
816 | static int method_list_transfers(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
817 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
818 | Manager *m = userdata; | |
819 | Transfer *t; | |
820 | Iterator i; | |
821 | int r; | |
822 | ||
823 | assert(bus); | |
824 | assert(msg); | |
825 | assert(m); | |
826 | ||
827 | r = sd_bus_message_new_method_return(msg, &reply); | |
828 | if (r < 0) | |
829 | return r; | |
830 | ||
7079cfef | 831 | r = sd_bus_message_open_container(reply, 'a', "(usssdo)"); |
3d7415f4 LP |
832 | if (r < 0) |
833 | return r; | |
834 | ||
835 | HASHMAP_FOREACH(t, m->transfers, i) { | |
836 | ||
837 | r = sd_bus_message_append( | |
838 | reply, | |
7079cfef | 839 | "(usssdo)", |
3d7415f4 LP |
840 | t->id, |
841 | transfer_type_to_string(t->type), | |
842 | t->remote, | |
843 | t->local, | |
7079cfef | 844 | (double) t->progress_percent / 100.0, |
3d7415f4 LP |
845 | t->object_path); |
846 | if (r < 0) | |
847 | return r; | |
848 | } | |
849 | ||
850 | r = sd_bus_message_close_container(reply); | |
851 | if (r < 0) | |
852 | return r; | |
853 | ||
854 | return sd_bus_send(bus, reply, NULL); | |
855 | } | |
856 | ||
857 | static int method_cancel(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
858 | Transfer *t = userdata; | |
859 | int r; | |
860 | ||
861 | assert(bus); | |
862 | assert(msg); | |
863 | assert(t); | |
864 | ||
865 | r = bus_verify_polkit_async( | |
866 | msg, | |
867 | CAP_SYS_ADMIN, | |
868 | "org.freedesktop.import1.pull", | |
869 | false, | |
c529695e | 870 | UID_INVALID, |
3d7415f4 LP |
871 | &t->manager->polkit_registry, |
872 | error); | |
873 | if (r < 0) | |
874 | return r; | |
875 | if (r == 0) | |
876 | return 1; /* Will call us back */ | |
877 | ||
878 | r = transfer_cancel(t); | |
879 | if (r < 0) | |
880 | return r; | |
881 | ||
882 | return sd_bus_reply_method_return(msg, NULL); | |
883 | } | |
884 | ||
885 | static int method_cancel_transfer(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
886 | Manager *m = userdata; | |
887 | Transfer *t; | |
888 | uint32_t id; | |
889 | int r; | |
890 | ||
891 | assert(bus); | |
892 | assert(msg); | |
893 | assert(m); | |
894 | ||
895 | r = bus_verify_polkit_async( | |
896 | msg, | |
897 | CAP_SYS_ADMIN, | |
898 | "org.freedesktop.import1.pull", | |
899 | false, | |
c529695e | 900 | UID_INVALID, |
3d7415f4 LP |
901 | &m->polkit_registry, |
902 | error); | |
903 | if (r < 0) | |
904 | return r; | |
905 | if (r == 0) | |
906 | return 1; /* Will call us back */ | |
907 | ||
908 | r = sd_bus_message_read(msg, "u", &id); | |
909 | if (r < 0) | |
910 | return r; | |
911 | if (id <= 0) | |
912 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid transfer id"); | |
913 | ||
914 | t = hashmap_get(m->transfers, UINT32_TO_PTR(id)); | |
915 | if (!t) | |
09d46cfd | 916 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_TRANSFER, "No transfer by id %" PRIu32, id); |
3d7415f4 LP |
917 | |
918 | r = transfer_cancel(t); | |
919 | if (r < 0) | |
920 | return r; | |
921 | ||
922 | return sd_bus_reply_method_return(msg, NULL); | |
923 | } | |
924 | ||
7079cfef LP |
925 | static int property_get_progress( |
926 | sd_bus *bus, | |
927 | const char *path, | |
928 | const char *interface, | |
929 | const char *property, | |
930 | sd_bus_message *reply, | |
931 | void *userdata, | |
932 | sd_bus_error *error) { | |
933 | ||
934 | Transfer *t = userdata; | |
935 | ||
936 | assert(bus); | |
937 | assert(reply); | |
938 | assert(t); | |
939 | ||
940 | return sd_bus_message_append(reply, "d", (double) t->progress_percent / 100.0); | |
941 | } | |
942 | ||
3d7415f4 LP |
943 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, transfer_type, TransferType); |
944 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_verify, import_verify, ImportVerify); | |
945 | ||
946 | static const sd_bus_vtable transfer_vtable[] = { | |
947 | SD_BUS_VTABLE_START(0), | |
948 | SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Transfer, id), SD_BUS_VTABLE_PROPERTY_CONST), | |
949 | SD_BUS_PROPERTY("Local", "s", NULL, offsetof(Transfer, local), SD_BUS_VTABLE_PROPERTY_CONST), | |
950 | SD_BUS_PROPERTY("Remote", "s", NULL, offsetof(Transfer, remote), SD_BUS_VTABLE_PROPERTY_CONST), | |
951 | SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Transfer, type), SD_BUS_VTABLE_PROPERTY_CONST), | |
952 | SD_BUS_PROPERTY("Verify", "s", property_get_verify, offsetof(Transfer, verify), SD_BUS_VTABLE_PROPERTY_CONST), | |
7079cfef | 953 | SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0), |
3d7415f4 LP |
954 | SD_BUS_METHOD("Cancel", NULL, NULL, method_cancel, SD_BUS_VTABLE_UNPRIVILEGED), |
955 | SD_BUS_SIGNAL("LogMessage", "us", 0), | |
956 | SD_BUS_VTABLE_END, | |
957 | }; | |
958 | ||
959 | static const sd_bus_vtable manager_vtable[] = { | |
960 | SD_BUS_VTABLE_START(0), | |
961 | SD_BUS_METHOD("PullTar", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED), | |
962 | SD_BUS_METHOD("PullRaw", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED), | |
963 | SD_BUS_METHOD("PullDkr", "sssssb", "uo", method_pull_dkr, SD_BUS_VTABLE_UNPRIVILEGED), | |
7079cfef | 964 | SD_BUS_METHOD("ListTransfers", NULL, "a(usssdo)", method_list_transfers, SD_BUS_VTABLE_UNPRIVILEGED), |
3d7415f4 LP |
965 | SD_BUS_METHOD("CancelTransfer", "u", NULL, method_cancel_transfer, SD_BUS_VTABLE_UNPRIVILEGED), |
966 | SD_BUS_SIGNAL("TransferNew", "uo", 0), | |
967 | SD_BUS_SIGNAL("TransferRemoved", "uos", 0), | |
968 | SD_BUS_VTABLE_END, | |
969 | }; | |
970 | ||
971 | static int transfer_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
972 | Manager *m = userdata; | |
973 | Transfer *t; | |
974 | const char *p; | |
975 | uint32_t id; | |
976 | int r; | |
977 | ||
978 | assert(bus); | |
979 | assert(path); | |
980 | assert(interface); | |
981 | assert(found); | |
982 | assert(m); | |
983 | ||
984 | p = startswith(path, "/org/freedesktop/import1/transfer/_"); | |
985 | if (!p) | |
986 | return 0; | |
987 | ||
988 | r = safe_atou32(p, &id); | |
989 | if (r < 0 || id == 0) | |
990 | return 0; | |
991 | ||
992 | t = hashmap_get(m->transfers, UINT32_TO_PTR(id)); | |
993 | if (!t) | |
994 | return 0; | |
995 | ||
996 | *found = t; | |
997 | return 1; | |
998 | } | |
999 | ||
1000 | static int transfer_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { | |
1001 | _cleanup_strv_free_ char **l = NULL; | |
1002 | Manager *m = userdata; | |
1003 | Transfer *t; | |
1004 | unsigned k = 0; | |
1005 | Iterator i; | |
1006 | ||
1007 | l = new0(char*, hashmap_size(m->transfers) + 1); | |
1008 | if (!l) | |
1009 | return -ENOMEM; | |
1010 | ||
1011 | HASHMAP_FOREACH(t, m->transfers, i) { | |
1012 | ||
1013 | l[k] = strdup(t->object_path); | |
1014 | if (!l[k]) | |
1015 | return -ENOMEM; | |
1016 | ||
1017 | k++; | |
1018 | } | |
1019 | ||
1020 | *nodes = l; | |
1021 | l = NULL; | |
1022 | ||
1023 | return 1; | |
1024 | } | |
1025 | ||
1026 | static int manager_add_bus_objects(Manager *m) { | |
1027 | int r; | |
1028 | ||
1029 | assert(m); | |
1030 | ||
1031 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/import1", "org.freedesktop.import1.Manager", manager_vtable, m); | |
1032 | if (r < 0) | |
1033 | return log_error_errno(r, "Failed to register object: %m"); | |
1034 | ||
1035 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/import1/transfer", "org.freedesktop.import1.Transfer", transfer_vtable, transfer_object_find, m); | |
1036 | if (r < 0) | |
1037 | return log_error_errno(r, "Failed to register object: %m"); | |
1038 | ||
1039 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/import1/transfer", transfer_node_enumerator, m); | |
1040 | if (r < 0) | |
1041 | return log_error_errno(r, "Failed to add transfer enumerator: %m"); | |
1042 | ||
1043 | r = sd_bus_request_name(m->bus, "org.freedesktop.import1", 0); | |
1044 | if (r < 0) | |
1045 | return log_error_errno(r, "Failed to register name: %m"); | |
1046 | ||
1047 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
1048 | if (r < 0) | |
1049 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | static bool manager_check_idle(void *userdata) { | |
1055 | Manager *m = userdata; | |
1056 | ||
1057 | return hashmap_isempty(m->transfers); | |
1058 | } | |
1059 | ||
1060 | static int manager_run(Manager *m) { | |
1061 | assert(m); | |
1062 | ||
1063 | return bus_event_loop_with_idle( | |
1064 | m->event, | |
1065 | m->bus, | |
1066 | "org.freedesktop.import1", | |
1067 | DEFAULT_EXIT_USEC, | |
1068 | manager_check_idle, | |
1069 | m); | |
1070 | } | |
1071 | ||
1072 | int main(int argc, char *argv[]) { | |
1073 | _cleanup_(manager_unrefp) Manager *m = NULL; | |
1074 | int r; | |
1075 | ||
1076 | log_set_target(LOG_TARGET_AUTO); | |
1077 | log_parse_environment(); | |
1078 | log_open(); | |
1079 | ||
1080 | umask(0022); | |
1081 | ||
1082 | if (argc != 1) { | |
1083 | log_error("This program takes no arguments."); | |
1084 | r = -EINVAL; | |
1085 | goto finish; | |
1086 | } | |
1087 | ||
1088 | assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0); | |
1089 | ||
1090 | r = manager_new(&m); | |
1091 | if (r < 0) { | |
1092 | log_error_errno(r, "Failed to allocate manager object: %m"); | |
1093 | goto finish; | |
1094 | } | |
1095 | ||
1096 | r = manager_add_bus_objects(m); | |
1097 | if (r < 0) | |
1098 | goto finish; | |
1099 | ||
1100 | r = manager_run(m); | |
1101 | if (r < 0) { | |
1102 | log_error_errno(r, "Failed to run event loop: %m"); | |
1103 | goto finish; | |
1104 | } | |
1105 | ||
1106 | finish: | |
1107 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1108 | } |