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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" | |
a97dcc12 | 32 | #include "def.h" |
ce06fdfb | 33 | #include "missing.h" |
432cea00 | 34 | #include "machine-pool.h" |
113b3fc1 | 35 | #include "path-util.h" |
ce06fdfb | 36 | #include "import-util.h" |
3d7415f4 LP |
37 | |
38 | typedef struct Transfer Transfer; | |
39 | typedef struct Manager Manager; | |
40 | ||
41 | typedef enum TransferType { | |
42 | TRANSFER_TAR, | |
43 | TRANSFER_RAW, | |
44 | TRANSFER_DKR, | |
45 | _TRANSFER_TYPE_MAX, | |
46 | _TRANSFER_TYPE_INVALID = -1, | |
47 | } TransferType; | |
48 | ||
49 | struct Transfer { | |
50 | Manager *manager; | |
51 | ||
52 | uint32_t id; | |
53 | char *object_path; | |
54 | ||
55 | TransferType type; | |
56 | ImportVerify verify; | |
57 | ||
58 | char *remote; | |
59 | char *local; | |
60 | bool force_local; | |
61 | ||
62 | char *dkr_index_url; | |
63 | ||
64 | pid_t pid; | |
65 | ||
66 | int log_fd; | |
67 | ||
68 | char log_message[LINE_MAX]; | |
69 | size_t log_message_size; | |
70 | ||
71 | sd_event_source *pid_event_source; | |
72 | sd_event_source *log_event_source; | |
73 | ||
74 | unsigned n_canceled; | |
7079cfef | 75 | unsigned progress_percent; |
3d7415f4 LP |
76 | }; |
77 | ||
78 | struct Manager { | |
79 | sd_event *event; | |
80 | sd_bus *bus; | |
81 | ||
82 | uint32_t current_transfer_id; | |
83 | Hashmap *transfers; | |
84 | ||
85 | Hashmap *polkit_registry; | |
7079cfef LP |
86 | |
87 | int notify_fd; | |
88 | ||
89 | sd_event_source *notify_event_source; | |
3d7415f4 LP |
90 | }; |
91 | ||
92 | #define TRANSFERS_MAX 64 | |
93 | ||
94 | static const char* const transfer_type_table[_TRANSFER_TYPE_MAX] = { | |
95 | [TRANSFER_TAR] = "tar", | |
96 | [TRANSFER_RAW] = "raw", | |
97 | [TRANSFER_DKR] = "dkr", | |
98 | }; | |
99 | ||
b9a5f858 | 100 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(transfer_type, TransferType); |
3d7415f4 LP |
101 | |
102 | static Transfer *transfer_unref(Transfer *t) { | |
103 | if (!t) | |
104 | return NULL; | |
105 | ||
106 | if (t->manager) | |
107 | hashmap_remove(t->manager->transfers, UINT32_TO_PTR(t->id)); | |
108 | ||
109 | sd_event_source_unref(t->pid_event_source); | |
110 | sd_event_source_unref(t->log_event_source); | |
111 | ||
112 | free(t->remote); | |
113 | free(t->local); | |
114 | free(t->dkr_index_url); | |
115 | free(t->object_path); | |
116 | ||
117 | if (t->pid > 0) { | |
118 | (void) kill_and_sigcont(t->pid, SIGKILL); | |
119 | (void) wait_for_terminate(t->pid, NULL); | |
120 | } | |
121 | ||
122 | safe_close(t->log_fd); | |
123 | ||
124 | free(t); | |
125 | return NULL; | |
126 | } | |
127 | ||
128 | DEFINE_TRIVIAL_CLEANUP_FUNC(Transfer*, transfer_unref); | |
129 | ||
130 | static int transfer_new(Manager *m, Transfer **ret) { | |
131 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
132 | uint32_t id; | |
133 | int r; | |
134 | ||
135 | assert(m); | |
136 | assert(ret); | |
137 | ||
138 | if (hashmap_size(m->transfers) >= TRANSFERS_MAX) | |
139 | return -E2BIG; | |
140 | ||
141 | r = hashmap_ensure_allocated(&m->transfers, &trivial_hash_ops); | |
142 | if (r < 0) | |
143 | return r; | |
144 | ||
145 | t = new0(Transfer, 1); | |
146 | if (!t) | |
147 | return -ENOMEM; | |
148 | ||
149 | t->type = _TRANSFER_TYPE_INVALID; | |
150 | t->log_fd = -1; | |
151 | ||
152 | id = m->current_transfer_id + 1; | |
153 | ||
154 | if (asprintf(&t->object_path, "/org/freedesktop/import1/transfer/_%" PRIu32, id) < 0) | |
155 | return -ENOMEM; | |
156 | ||
157 | r = hashmap_put(m->transfers, UINT32_TO_PTR(id), t); | |
158 | if (r < 0) | |
159 | return r; | |
160 | ||
161 | m->current_transfer_id = id; | |
162 | ||
163 | t->manager = m; | |
164 | t->id = id; | |
165 | ||
166 | *ret = t; | |
167 | t = NULL; | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static void transfer_send_log_line(Transfer *t, const char *line) { | |
173 | int r, priority = LOG_INFO; | |
174 | ||
175 | assert(t); | |
176 | assert(line); | |
177 | ||
178 | syslog_parse_priority(&line, &priority, true); | |
179 | ||
09d46cfd | 180 | log_full(priority, "(transfer%" PRIu32 ") %s", t->id, line); |
3d7415f4 LP |
181 | |
182 | r = sd_bus_emit_signal( | |
183 | t->manager->bus, | |
184 | t->object_path, | |
185 | "org.freedesktop.import1.Transfer", | |
186 | "LogMessage", | |
187 | "us", | |
188 | priority, | |
189 | line); | |
190 | if (r < 0) | |
191 | log_error_errno(r, "Cannot emit message: %m"); | |
192 | } | |
193 | ||
194 | static void transfer_send_logs(Transfer *t, bool flush) { | |
195 | assert(t); | |
196 | ||
197 | /* Try to send out all log messages, if we can. But if we | |
198 | * can't we remove the messages from the buffer, but don't | |
199 | * fail */ | |
200 | ||
201 | while (t->log_message_size > 0) { | |
202 | _cleanup_free_ char *n = NULL; | |
203 | char *e; | |
204 | ||
205 | if (t->log_message_size >= sizeof(t->log_message)) | |
206 | e = t->log_message + sizeof(t->log_message); | |
207 | else { | |
208 | char *a, *b; | |
209 | ||
210 | a = memchr(t->log_message, 0, t->log_message_size); | |
211 | b = memchr(t->log_message, '\n', t->log_message_size); | |
212 | ||
213 | if (a && b) | |
214 | e = a < b ? a : b; | |
215 | else if (a) | |
216 | e = a; | |
217 | else | |
218 | e = b; | |
219 | } | |
220 | ||
221 | if (!e) { | |
222 | if (!flush) | |
223 | return; | |
224 | ||
225 | e = t->log_message + t->log_message_size; | |
226 | } | |
227 | ||
228 | n = strndup(t->log_message, e - t->log_message); | |
229 | ||
230 | /* Skip over NUL and newlines */ | |
231 | while (e < t->log_message + t->log_message_size && (*e == 0 || *e == '\n')) | |
232 | e++; | |
233 | ||
234 | memmove(t->log_message, e, t->log_message + sizeof(t->log_message) - e); | |
235 | t->log_message_size -= e - t->log_message; | |
236 | ||
237 | if (!n) { | |
238 | log_oom(); | |
239 | continue; | |
240 | } | |
241 | ||
242 | if (isempty(n)) | |
243 | continue; | |
244 | ||
245 | transfer_send_log_line(t, n); | |
246 | } | |
247 | } | |
248 | ||
249 | static int transfer_finalize(Transfer *t, bool success) { | |
250 | int r; | |
251 | ||
252 | assert(t); | |
253 | ||
254 | transfer_send_logs(t, true); | |
255 | ||
256 | r = sd_bus_emit_signal( | |
257 | t->manager->bus, | |
258 | "/org/freedesktop/import1", | |
259 | "org.freedesktop.import1.Manager", | |
260 | "TransferRemoved", | |
261 | "uos", | |
262 | t->id, | |
263 | t->object_path, | |
264 | success ? "done" : | |
265 | t->n_canceled > 0 ? "canceled" : "failed"); | |
266 | ||
267 | if (r < 0) | |
268 | log_error_errno(r, "Cannot emit message: %m"); | |
269 | ||
270 | transfer_unref(t); | |
271 | return 0; | |
272 | } | |
273 | ||
274 | static int transfer_cancel(Transfer *t) { | |
275 | int r; | |
276 | ||
277 | assert(t); | |
278 | ||
279 | r = kill_and_sigcont(t->pid, t->n_canceled < 3 ? SIGTERM : SIGKILL); | |
280 | if (r < 0) | |
281 | return r; | |
282 | ||
283 | t->n_canceled++; | |
284 | return 0; | |
285 | } | |
286 | ||
287 | static int transfer_on_pid(sd_event_source *s, const siginfo_t *si, void *userdata) { | |
288 | Transfer *t = userdata; | |
289 | bool success = false; | |
290 | ||
291 | assert(s); | |
292 | assert(t); | |
293 | ||
294 | if (si->si_code == CLD_EXITED) { | |
295 | if (si->si_status != 0) | |
296 | log_error("Import process failed with exit code %i.", si->si_status); | |
297 | else { | |
298 | log_debug("Import process succeeded."); | |
299 | success = true; | |
300 | } | |
301 | ||
302 | } else if (si->si_code == CLD_KILLED || | |
303 | si->si_code == CLD_DUMPED) | |
304 | ||
305 | log_error("Import process terminated by signal %s.", signal_to_string(si->si_status)); | |
306 | else | |
307 | log_error("Import process failed due to unknown reason."); | |
308 | ||
309 | t->pid = 0; | |
310 | ||
311 | return transfer_finalize(t, success); | |
312 | } | |
313 | ||
314 | static int transfer_on_log(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
315 | Transfer *t = userdata; | |
316 | ssize_t l; | |
317 | ||
318 | assert(s); | |
319 | assert(t); | |
320 | ||
321 | l = read(fd, t->log_message + t->log_message_size, sizeof(t->log_message) - t->log_message_size); | |
322 | if (l <= 0) { | |
323 | /* EOF/read error. We just close the pipe here, and | |
324 | * close the watch, waiting for the SIGCHLD to arrive, | |
325 | * before we do anything else. */ | |
326 | ||
327 | if (l < 0) | |
328 | log_error_errno(errno, "Failed to read log message: %m"); | |
329 | ||
330 | t->log_event_source = sd_event_source_unref(t->log_event_source); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | t->log_message_size += l; | |
335 | ||
336 | transfer_send_logs(t, false); | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static int transfer_start(Transfer *t) { | |
342 | _cleanup_close_pair_ int pipefd[2] = { -1, -1 }; | |
343 | int r; | |
344 | ||
345 | assert(t); | |
346 | assert(t->pid <= 0); | |
347 | ||
348 | if (pipe2(pipefd, O_CLOEXEC) < 0) | |
349 | return -errno; | |
350 | ||
351 | t->pid = fork(); | |
352 | if (t->pid < 0) | |
353 | return -errno; | |
354 | if (t->pid == 0) { | |
355 | const char *cmd[] = { | |
ff828763 | 356 | "systemd-pull", |
aa9bd499 | 357 | transfer_type_to_string(t->type), |
3d7415f4 LP |
358 | "--verify", |
359 | NULL, /* verify argument */ | |
360 | NULL, /* maybe --force */ | |
361 | NULL, /* maybe --dkr-index-url */ | |
362 | NULL, /* the actual URL */ | |
363 | NULL, /* remote */ | |
364 | NULL, /* local */ | |
365 | NULL | |
366 | }; | |
367 | int null_fd; | |
368 | unsigned k = 3; | |
369 | ||
370 | /* Child */ | |
371 | ||
372 | reset_all_signal_handlers(); | |
373 | reset_signal_mask(); | |
374 | assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); | |
375 | ||
376 | pipefd[0] = safe_close(pipefd[0]); | |
377 | ||
378 | if (dup2(pipefd[1], STDOUT_FILENO) != STDOUT_FILENO) { | |
379 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
380 | _exit(EXIT_FAILURE); | |
381 | } | |
382 | ||
383 | if (dup2(pipefd[1], STDERR_FILENO) != STDERR_FILENO) { | |
384 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
385 | _exit(EXIT_FAILURE); | |
386 | } | |
387 | ||
388 | if (pipefd[1] != STDOUT_FILENO && pipefd[1] != STDERR_FILENO) | |
389 | pipefd[1] = safe_close(pipefd[1]); | |
390 | ||
391 | null_fd = open("/dev/null", O_RDONLY|O_NOCTTY); | |
392 | if (null_fd < 0) { | |
393 | log_error_errno(errno, "Failed to open /dev/null: %m"); | |
394 | _exit(EXIT_FAILURE); | |
395 | } | |
396 | ||
397 | if (dup2(null_fd, STDIN_FILENO) != STDIN_FILENO) { | |
398 | log_error_errno(errno, "Failed to dup2() fd: %m"); | |
399 | _exit(EXIT_FAILURE); | |
400 | } | |
401 | ||
402 | if (null_fd != STDIN_FILENO) | |
403 | safe_close(null_fd); | |
404 | ||
405 | fd_cloexec(STDIN_FILENO, false); | |
406 | fd_cloexec(STDOUT_FILENO, false); | |
407 | fd_cloexec(STDERR_FILENO, false); | |
408 | ||
7079cfef LP |
409 | setenv("SYSTEMD_LOG_TARGET", "console-prefixed", 1); |
410 | setenv("NOTIFY_SOCKET", "/run/systemd/import/notify", 1); | |
3d7415f4 LP |
411 | |
412 | cmd[k++] = import_verify_to_string(t->verify); | |
413 | if (t->force_local) | |
414 | cmd[k++] = "--force"; | |
415 | ||
416 | if (t->dkr_index_url) { | |
417 | cmd[k++] = "--dkr-index-url"; | |
418 | cmd[k++] = t->dkr_index_url; | |
419 | } | |
420 | ||
421 | cmd[k++] = t->remote; | |
422 | if (t->local) | |
423 | cmd[k++] = t->local; | |
424 | cmd[k] = NULL; | |
425 | ||
ff828763 | 426 | execv(SYSTEMD_PULL_PATH, (char * const *) cmd); |
3d7415f4 LP |
427 | log_error_errno(errno, "Failed to execute import tool: %m"); |
428 | _exit(EXIT_FAILURE); | |
429 | } | |
430 | ||
431 | pipefd[1] = safe_close(pipefd[1]); | |
432 | t->log_fd = pipefd[0]; | |
433 | pipefd[0] = -1; | |
434 | ||
435 | r = sd_event_add_child(t->manager->event, &t->pid_event_source, t->pid, WEXITED, transfer_on_pid, t); | |
436 | if (r < 0) | |
437 | return r; | |
438 | ||
439 | r = sd_event_add_io(t->manager->event, &t->log_event_source, t->log_fd, EPOLLIN, transfer_on_log, t); | |
440 | if (r < 0) | |
441 | return r; | |
442 | ||
443 | /* Make sure always process logging before SIGCHLD */ | |
444 | r = sd_event_source_set_priority(t->log_event_source, SD_EVENT_PRIORITY_NORMAL -5); | |
445 | if (r < 0) | |
446 | return r; | |
447 | ||
448 | r = sd_bus_emit_signal( | |
449 | t->manager->bus, | |
450 | "/org/freedesktop/import1", | |
451 | "org.freedesktop.import1.Manager", | |
452 | "TransferNew", | |
453 | "uo", | |
454 | t->id, | |
455 | t->object_path); | |
456 | if (r < 0) | |
457 | return r; | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
462 | static Manager *manager_unref(Manager *m) { | |
463 | Transfer *t; | |
464 | ||
465 | if (!m) | |
466 | return NULL; | |
467 | ||
7079cfef LP |
468 | sd_event_source_unref(m->notify_event_source); |
469 | safe_close(m->notify_fd); | |
470 | ||
3d7415f4 LP |
471 | while ((t = hashmap_first(m->transfers))) |
472 | transfer_unref(t); | |
473 | ||
474 | hashmap_free(m->transfers); | |
475 | ||
476 | bus_verify_polkit_async_registry_free(m->polkit_registry); | |
477 | ||
478 | sd_bus_close(m->bus); | |
479 | sd_bus_unref(m->bus); | |
480 | sd_event_unref(m->event); | |
481 | ||
482 | free(m); | |
483 | return NULL; | |
484 | } | |
485 | ||
486 | DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref); | |
487 | ||
7079cfef LP |
488 | static int manager_on_notify(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
489 | ||
490 | char buf[NOTIFY_BUFFER_MAX+1]; | |
491 | struct iovec iovec = { | |
492 | .iov_base = buf, | |
493 | .iov_len = sizeof(buf)-1, | |
494 | }; | |
495 | union { | |
496 | struct cmsghdr cmsghdr; | |
497 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
498 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
499 | } control = {}; | |
500 | struct msghdr msghdr = { | |
501 | .msg_iov = &iovec, | |
502 | .msg_iovlen = 1, | |
503 | .msg_control = &control, | |
504 | .msg_controllen = sizeof(control), | |
505 | }; | |
506 | struct ucred *ucred = NULL; | |
507 | Manager *m = userdata; | |
508 | struct cmsghdr *cmsg; | |
509 | unsigned percent; | |
510 | char *p, *e; | |
511 | Transfer *t; | |
512 | Iterator i; | |
513 | ssize_t n; | |
514 | int r; | |
515 | ||
516 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); | |
517 | if (n < 0) { | |
518 | if (errno == EAGAIN || errno == EINTR) | |
519 | return 0; | |
520 | ||
521 | return -errno; | |
522 | } | |
523 | ||
1c8da044 LP |
524 | cmsg_close_all(&msghdr); |
525 | ||
7079cfef | 526 | for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) { |
1c8da044 | 527 | if (cmsg->cmsg_level == SOL_SOCKET && |
7079cfef LP |
528 | cmsg->cmsg_type == SCM_CREDENTIALS && |
529 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
530 | ||
531 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
532 | } | |
533 | } | |
534 | ||
535 | if (msghdr.msg_flags & MSG_TRUNC) { | |
536 | log_warning("Got overly long notification datagram, ignoring."); | |
537 | return 0; | |
538 | } | |
539 | ||
540 | if (!ucred || ucred->pid <= 0) { | |
541 | log_warning("Got notification datagram lacking credential information, ignoring."); | |
542 | return 0; | |
543 | } | |
544 | ||
545 | HASHMAP_FOREACH(t, m->transfers, i) | |
546 | if (ucred->pid == t->pid) | |
547 | break; | |
548 | ||
549 | if (!t) { | |
550 | log_warning("Got notification datagram from unexpected peer, ignoring."); | |
551 | return 0; | |
552 | } | |
553 | ||
554 | buf[n] = 0; | |
555 | ||
556 | p = startswith(buf, "X_IMPORT_PROGRESS="); | |
557 | if (!p) { | |
558 | p = strstr(buf, "\nX_IMPORT_PROGRESS="); | |
559 | if (!p) | |
560 | return 0; | |
561 | ||
562 | p += 19; | |
563 | } | |
564 | ||
565 | e = strchrnul(p, '\n'); | |
566 | *e = 0; | |
567 | ||
568 | r = safe_atou(p, &percent); | |
569 | if (r < 0 || percent > 100) { | |
570 | log_warning("Got invalid percent value, ignoring."); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | t->progress_percent = percent; | |
575 | ||
576 | log_debug("Got percentage from client: %u%%", percent); | |
577 | return 0; | |
578 | } | |
579 | ||
3d7415f4 LP |
580 | static int manager_new(Manager **ret) { |
581 | _cleanup_(manager_unrefp) Manager *m = NULL; | |
7079cfef LP |
582 | static const union sockaddr_union sa = { |
583 | .un.sun_family = AF_UNIX, | |
584 | .un.sun_path = "/run/systemd/import/notify", | |
585 | }; | |
586 | static const int one = 1; | |
3d7415f4 LP |
587 | int r; |
588 | ||
589 | assert(ret); | |
590 | ||
591 | m = new0(Manager, 1); | |
592 | if (!m) | |
593 | return -ENOMEM; | |
594 | ||
595 | r = sd_event_default(&m->event); | |
596 | if (r < 0) | |
597 | return r; | |
598 | ||
599 | sd_event_set_watchdog(m->event, true); | |
600 | ||
601 | r = sd_bus_default_system(&m->bus); | |
602 | if (r < 0) | |
603 | return r; | |
604 | ||
7079cfef LP |
605 | m->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
606 | if (m->notify_fd < 0) | |
607 | return -errno; | |
608 | ||
609 | (void) mkdir_parents_label(sa.un.sun_path, 0755); | |
610 | (void) unlink(sa.un.sun_path); | |
611 | ||
612 | if (bind(m->notify_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path)) < 0) | |
613 | return -errno; | |
614 | ||
615 | if (setsockopt(m->notify_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) | |
616 | return -errno; | |
617 | ||
618 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_on_notify, m); | |
619 | if (r < 0) | |
620 | return r; | |
621 | ||
3d7415f4 LP |
622 | *ret = m; |
623 | m = NULL; | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static Transfer *manager_find(Manager *m, TransferType type, const char *dkr_index_url, const char *remote) { | |
629 | Transfer *t; | |
630 | Iterator i; | |
631 | ||
632 | assert(m); | |
633 | assert(type >= 0); | |
634 | assert(type < _TRANSFER_TYPE_MAX); | |
635 | ||
636 | HASHMAP_FOREACH(t, m->transfers, i) { | |
637 | ||
638 | if (t->type == type && | |
639 | streq_ptr(t->remote, remote) && | |
640 | streq_ptr(t->dkr_index_url, dkr_index_url)) | |
641 | return t; | |
642 | } | |
643 | ||
644 | return NULL; | |
645 | } | |
646 | ||
647 | static int method_pull_tar_or_raw(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
648 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
649 | const char *remote, *local, *verify, *object; | |
650 | Manager *m = userdata; | |
651 | ImportVerify v; | |
652 | TransferType type; | |
653 | int force, r; | |
654 | uint32_t id; | |
655 | ||
656 | assert(bus); | |
657 | assert(msg); | |
658 | assert(m); | |
659 | ||
660 | r = bus_verify_polkit_async( | |
661 | msg, | |
662 | CAP_SYS_ADMIN, | |
663 | "org.freedesktop.import1.pull", | |
664 | false, | |
c529695e | 665 | UID_INVALID, |
3d7415f4 LP |
666 | &m->polkit_registry, |
667 | error); | |
668 | if (r < 0) | |
669 | return r; | |
670 | if (r == 0) | |
671 | return 1; /* Will call us back */ | |
672 | ||
673 | r = sd_bus_message_read(msg, "sssb", &remote, &local, &verify, &force); | |
674 | if (r < 0) | |
675 | return r; | |
676 | ||
677 | if (!http_url_is_valid(remote)) | |
678 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "URL %s is invalid", remote); | |
679 | ||
680 | if (isempty(local)) | |
681 | local = NULL; | |
682 | else if (!machine_name_is_valid(local)) | |
683 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local); | |
684 | ||
685 | if (isempty(verify)) | |
686 | v = IMPORT_VERIFY_SIGNATURE; | |
687 | else | |
688 | v = import_verify_from_string(verify); | |
689 | if (v < 0) | |
690 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify); | |
691 | ||
4cee5eed | 692 | r = setup_machine_directory((uint64_t) -1, error); |
ce06fdfb LP |
693 | if (r < 0) |
694 | return r; | |
695 | ||
3d7415f4 LP |
696 | type = streq_ptr(sd_bus_message_get_member(msg), "PullTar") ? TRANSFER_TAR : TRANSFER_RAW; |
697 | ||
698 | if (manager_find(m, type, NULL, remote)) | |
699 | return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote); | |
700 | ||
701 | r = transfer_new(m, &t); | |
702 | if (r < 0) | |
703 | return r; | |
704 | ||
705 | t->type = type; | |
706 | t->verify = v; | |
707 | t->force_local = force; | |
708 | ||
709 | t->remote = strdup(remote); | |
710 | if (!t->remote) | |
711 | return -ENOMEM; | |
712 | ||
713 | t->local = strdup(local); | |
714 | if (!t->local) | |
715 | return -ENOMEM; | |
716 | ||
717 | r = transfer_start(t); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
721 | object = t->object_path; | |
722 | id = t->id; | |
723 | t = NULL; | |
724 | ||
725 | return sd_bus_reply_method_return(msg, "uo", id, object); | |
726 | } | |
727 | ||
728 | static int method_pull_dkr(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
729 | _cleanup_(transfer_unrefp) Transfer *t = NULL; | |
730 | const char *index_url, *remote, *tag, *local, *verify, *object; | |
731 | Manager *m = userdata; | |
732 | ImportVerify v; | |
733 | int force, r; | |
734 | uint32_t id; | |
735 | ||
736 | assert(bus); | |
737 | assert(msg); | |
738 | assert(m); | |
739 | ||
740 | r = bus_verify_polkit_async( | |
741 | msg, | |
742 | CAP_SYS_ADMIN, | |
743 | "org.freedesktop.import1.pull", | |
744 | false, | |
c529695e | 745 | UID_INVALID, |
3d7415f4 LP |
746 | &m->polkit_registry, |
747 | error); | |
748 | if (r < 0) | |
749 | return r; | |
750 | if (r == 0) | |
751 | return 1; /* Will call us back */ | |
752 | ||
753 | r = sd_bus_message_read(msg, "sssssb", &index_url, &remote, &tag, &local, &verify, &force); | |
754 | if (r < 0) | |
755 | return r; | |
756 | ||
757 | if (isempty(index_url)) | |
758 | index_url = DEFAULT_DKR_INDEX_URL; | |
759 | if (!index_url) | |
760 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL must be specified."); | |
761 | if (!http_url_is_valid(index_url)) | |
762 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL %s is invalid", index_url); | |
763 | ||
764 | if (!dkr_name_is_valid(remote)) | |
765 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Remote name %s is not valid", remote); | |
766 | ||
767 | if (isempty(tag)) | |
768 | tag = "latest"; | |
769 | else if (!dkr_tag_is_valid(tag)) | |
770 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Tag %s is not valid", tag); | |
771 | ||
772 | if (isempty(local)) | |
773 | local = NULL; | |
774 | else if (!machine_name_is_valid(local)) | |
775 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local); | |
776 | ||
777 | if (isempty(verify)) | |
778 | v = IMPORT_VERIFY_SIGNATURE; | |
779 | else | |
780 | v = import_verify_from_string(verify); | |
781 | if (v < 0) | |
782 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify); | |
783 | ||
784 | if (v != IMPORT_VERIFY_NO) | |
785 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "DKR does not support verification."); | |
786 | ||
4cee5eed | 787 | r = setup_machine_directory((uint64_t) -1, error); |
ce06fdfb LP |
788 | if (r < 0) |
789 | return r; | |
790 | ||
3d7415f4 LP |
791 | if (manager_find(m, TRANSFER_DKR, index_url, remote)) |
792 | return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote); | |
793 | ||
794 | r = transfer_new(m, &t); | |
795 | if (r < 0) | |
796 | return r; | |
797 | ||
798 | t->type = TRANSFER_DKR; | |
799 | t->verify = v; | |
800 | t->force_local = force; | |
801 | ||
802 | t->dkr_index_url = strdup(index_url); | |
803 | if (!t->dkr_index_url) | |
804 | return -ENOMEM; | |
805 | ||
806 | t->remote = strjoin(remote, ":", tag, NULL); | |
807 | if (!t->remote) | |
808 | return -ENOMEM; | |
809 | ||
810 | t->local = strdup(local); | |
811 | if (!t->local) | |
812 | return -ENOMEM; | |
813 | ||
814 | r = transfer_start(t); | |
815 | if (r < 0) | |
816 | return r; | |
817 | ||
818 | object = t->object_path; | |
819 | id = t->id; | |
820 | t = NULL; | |
821 | ||
822 | return sd_bus_reply_method_return(msg, "uo", id, object); | |
823 | } | |
824 | ||
825 | static int method_list_transfers(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
826 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
827 | Manager *m = userdata; | |
828 | Transfer *t; | |
829 | Iterator i; | |
830 | int r; | |
831 | ||
832 | assert(bus); | |
833 | assert(msg); | |
834 | assert(m); | |
835 | ||
836 | r = sd_bus_message_new_method_return(msg, &reply); | |
837 | if (r < 0) | |
838 | return r; | |
839 | ||
7079cfef | 840 | r = sd_bus_message_open_container(reply, 'a', "(usssdo)"); |
3d7415f4 LP |
841 | if (r < 0) |
842 | return r; | |
843 | ||
844 | HASHMAP_FOREACH(t, m->transfers, i) { | |
845 | ||
846 | r = sd_bus_message_append( | |
847 | reply, | |
7079cfef | 848 | "(usssdo)", |
3d7415f4 LP |
849 | t->id, |
850 | transfer_type_to_string(t->type), | |
851 | t->remote, | |
852 | t->local, | |
7079cfef | 853 | (double) t->progress_percent / 100.0, |
3d7415f4 LP |
854 | t->object_path); |
855 | if (r < 0) | |
856 | return r; | |
857 | } | |
858 | ||
859 | r = sd_bus_message_close_container(reply); | |
860 | if (r < 0) | |
861 | return r; | |
862 | ||
863 | return sd_bus_send(bus, reply, NULL); | |
864 | } | |
865 | ||
866 | static int method_cancel(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
867 | Transfer *t = userdata; | |
868 | int r; | |
869 | ||
870 | assert(bus); | |
871 | assert(msg); | |
872 | assert(t); | |
873 | ||
874 | r = bus_verify_polkit_async( | |
875 | msg, | |
876 | CAP_SYS_ADMIN, | |
877 | "org.freedesktop.import1.pull", | |
878 | false, | |
c529695e | 879 | UID_INVALID, |
3d7415f4 LP |
880 | &t->manager->polkit_registry, |
881 | error); | |
882 | if (r < 0) | |
883 | return r; | |
884 | if (r == 0) | |
885 | return 1; /* Will call us back */ | |
886 | ||
887 | r = transfer_cancel(t); | |
888 | if (r < 0) | |
889 | return r; | |
890 | ||
891 | return sd_bus_reply_method_return(msg, NULL); | |
892 | } | |
893 | ||
894 | static int method_cancel_transfer(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) { | |
895 | Manager *m = userdata; | |
896 | Transfer *t; | |
897 | uint32_t id; | |
898 | int r; | |
899 | ||
900 | assert(bus); | |
901 | assert(msg); | |
902 | assert(m); | |
903 | ||
904 | r = bus_verify_polkit_async( | |
905 | msg, | |
906 | CAP_SYS_ADMIN, | |
907 | "org.freedesktop.import1.pull", | |
908 | false, | |
c529695e | 909 | UID_INVALID, |
3d7415f4 LP |
910 | &m->polkit_registry, |
911 | error); | |
912 | if (r < 0) | |
913 | return r; | |
914 | if (r == 0) | |
915 | return 1; /* Will call us back */ | |
916 | ||
917 | r = sd_bus_message_read(msg, "u", &id); | |
918 | if (r < 0) | |
919 | return r; | |
920 | if (id <= 0) | |
921 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid transfer id"); | |
922 | ||
923 | t = hashmap_get(m->transfers, UINT32_TO_PTR(id)); | |
924 | if (!t) | |
09d46cfd | 925 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_TRANSFER, "No transfer by id %" PRIu32, id); |
3d7415f4 LP |
926 | |
927 | r = transfer_cancel(t); | |
928 | if (r < 0) | |
929 | return r; | |
930 | ||
931 | return sd_bus_reply_method_return(msg, NULL); | |
932 | } | |
933 | ||
7079cfef LP |
934 | static int property_get_progress( |
935 | sd_bus *bus, | |
936 | const char *path, | |
937 | const char *interface, | |
938 | const char *property, | |
939 | sd_bus_message *reply, | |
940 | void *userdata, | |
941 | sd_bus_error *error) { | |
942 | ||
943 | Transfer *t = userdata; | |
944 | ||
945 | assert(bus); | |
946 | assert(reply); | |
947 | assert(t); | |
948 | ||
949 | return sd_bus_message_append(reply, "d", (double) t->progress_percent / 100.0); | |
950 | } | |
951 | ||
3d7415f4 LP |
952 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, transfer_type, TransferType); |
953 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_verify, import_verify, ImportVerify); | |
954 | ||
955 | static const sd_bus_vtable transfer_vtable[] = { | |
956 | SD_BUS_VTABLE_START(0), | |
957 | SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Transfer, id), SD_BUS_VTABLE_PROPERTY_CONST), | |
958 | SD_BUS_PROPERTY("Local", "s", NULL, offsetof(Transfer, local), SD_BUS_VTABLE_PROPERTY_CONST), | |
959 | SD_BUS_PROPERTY("Remote", "s", NULL, offsetof(Transfer, remote), SD_BUS_VTABLE_PROPERTY_CONST), | |
960 | SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Transfer, type), SD_BUS_VTABLE_PROPERTY_CONST), | |
961 | SD_BUS_PROPERTY("Verify", "s", property_get_verify, offsetof(Transfer, verify), SD_BUS_VTABLE_PROPERTY_CONST), | |
7079cfef | 962 | SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0), |
3d7415f4 LP |
963 | SD_BUS_METHOD("Cancel", NULL, NULL, method_cancel, SD_BUS_VTABLE_UNPRIVILEGED), |
964 | SD_BUS_SIGNAL("LogMessage", "us", 0), | |
965 | SD_BUS_VTABLE_END, | |
966 | }; | |
967 | ||
968 | static const sd_bus_vtable manager_vtable[] = { | |
969 | SD_BUS_VTABLE_START(0), | |
970 | SD_BUS_METHOD("PullTar", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED), | |
971 | SD_BUS_METHOD("PullRaw", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED), | |
972 | SD_BUS_METHOD("PullDkr", "sssssb", "uo", method_pull_dkr, SD_BUS_VTABLE_UNPRIVILEGED), | |
7079cfef | 973 | SD_BUS_METHOD("ListTransfers", NULL, "a(usssdo)", method_list_transfers, SD_BUS_VTABLE_UNPRIVILEGED), |
3d7415f4 LP |
974 | SD_BUS_METHOD("CancelTransfer", "u", NULL, method_cancel_transfer, SD_BUS_VTABLE_UNPRIVILEGED), |
975 | SD_BUS_SIGNAL("TransferNew", "uo", 0), | |
976 | SD_BUS_SIGNAL("TransferRemoved", "uos", 0), | |
977 | SD_BUS_VTABLE_END, | |
978 | }; | |
979 | ||
980 | static int transfer_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
981 | Manager *m = userdata; | |
982 | Transfer *t; | |
983 | const char *p; | |
984 | uint32_t id; | |
985 | int r; | |
986 | ||
987 | assert(bus); | |
988 | assert(path); | |
989 | assert(interface); | |
990 | assert(found); | |
991 | assert(m); | |
992 | ||
993 | p = startswith(path, "/org/freedesktop/import1/transfer/_"); | |
994 | if (!p) | |
995 | return 0; | |
996 | ||
997 | r = safe_atou32(p, &id); | |
998 | if (r < 0 || id == 0) | |
999 | return 0; | |
1000 | ||
1001 | t = hashmap_get(m->transfers, UINT32_TO_PTR(id)); | |
1002 | if (!t) | |
1003 | return 0; | |
1004 | ||
1005 | *found = t; | |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | static int transfer_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { | |
1010 | _cleanup_strv_free_ char **l = NULL; | |
1011 | Manager *m = userdata; | |
1012 | Transfer *t; | |
1013 | unsigned k = 0; | |
1014 | Iterator i; | |
1015 | ||
1016 | l = new0(char*, hashmap_size(m->transfers) + 1); | |
1017 | if (!l) | |
1018 | return -ENOMEM; | |
1019 | ||
1020 | HASHMAP_FOREACH(t, m->transfers, i) { | |
1021 | ||
1022 | l[k] = strdup(t->object_path); | |
1023 | if (!l[k]) | |
1024 | return -ENOMEM; | |
1025 | ||
1026 | k++; | |
1027 | } | |
1028 | ||
1029 | *nodes = l; | |
1030 | l = NULL; | |
1031 | ||
1032 | return 1; | |
1033 | } | |
1034 | ||
1035 | static int manager_add_bus_objects(Manager *m) { | |
1036 | int r; | |
1037 | ||
1038 | assert(m); | |
1039 | ||
1040 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/import1", "org.freedesktop.import1.Manager", manager_vtable, m); | |
1041 | if (r < 0) | |
1042 | return log_error_errno(r, "Failed to register object: %m"); | |
1043 | ||
1044 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/import1/transfer", "org.freedesktop.import1.Transfer", transfer_vtable, transfer_object_find, m); | |
1045 | if (r < 0) | |
1046 | return log_error_errno(r, "Failed to register object: %m"); | |
1047 | ||
1048 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/import1/transfer", transfer_node_enumerator, m); | |
1049 | if (r < 0) | |
1050 | return log_error_errno(r, "Failed to add transfer enumerator: %m"); | |
1051 | ||
1052 | r = sd_bus_request_name(m->bus, "org.freedesktop.import1", 0); | |
1053 | if (r < 0) | |
1054 | return log_error_errno(r, "Failed to register name: %m"); | |
1055 | ||
1056 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
1057 | if (r < 0) | |
1058 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | static bool manager_check_idle(void *userdata) { | |
1064 | Manager *m = userdata; | |
1065 | ||
1066 | return hashmap_isempty(m->transfers); | |
1067 | } | |
1068 | ||
1069 | static int manager_run(Manager *m) { | |
1070 | assert(m); | |
1071 | ||
1072 | return bus_event_loop_with_idle( | |
1073 | m->event, | |
1074 | m->bus, | |
1075 | "org.freedesktop.import1", | |
1076 | DEFAULT_EXIT_USEC, | |
1077 | manager_check_idle, | |
1078 | m); | |
1079 | } | |
1080 | ||
1081 | int main(int argc, char *argv[]) { | |
1082 | _cleanup_(manager_unrefp) Manager *m = NULL; | |
1083 | int r; | |
1084 | ||
1085 | log_set_target(LOG_TARGET_AUTO); | |
1086 | log_parse_environment(); | |
1087 | log_open(); | |
1088 | ||
1089 | umask(0022); | |
1090 | ||
1091 | if (argc != 1) { | |
1092 | log_error("This program takes no arguments."); | |
1093 | r = -EINVAL; | |
1094 | goto finish; | |
1095 | } | |
1096 | ||
1097 | assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0); | |
1098 | ||
1099 | r = manager_new(&m); | |
1100 | if (r < 0) { | |
1101 | log_error_errno(r, "Failed to allocate manager object: %m"); | |
1102 | goto finish; | |
1103 | } | |
1104 | ||
1105 | r = manager_add_bus_objects(m); | |
1106 | if (r < 0) | |
1107 | goto finish; | |
1108 | ||
1109 | r = manager_run(m); | |
1110 | if (r < 0) { | |
1111 | log_error_errno(r, "Failed to run event loop: %m"); | |
1112 | goto finish; | |
1113 | } | |
1114 | ||
1115 | finish: | |
1116 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1117 | } |