2 13b2bc37 2022-10-23 stsp * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 13b2bc37 2022-10-23 stsp * Permission to use, copy, modify, and distribute this software for any
5 13b2bc37 2022-10-23 stsp * purpose with or without fee is hereby granted, provided that the above
6 13b2bc37 2022-10-23 stsp * copyright notice and this permission notice appear in all copies.
8 13b2bc37 2022-10-23 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 13b2bc37 2022-10-23 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 13b2bc37 2022-10-23 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 13b2bc37 2022-10-23 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 13b2bc37 2022-10-23 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 13b2bc37 2022-10-23 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 13b2bc37 2022-10-23 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
18 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
19 13b2bc37 2022-10-23 stsp #include <sys/time.h>
20 13b2bc37 2022-10-23 stsp #include <sys/types.h>
21 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
22 13b2bc37 2022-10-23 stsp #include <sys/socket.h>
23 13b2bc37 2022-10-23 stsp #include <sys/un.h>
24 13b2bc37 2022-10-23 stsp #include <sys/wait.h>
26 13b2bc37 2022-10-23 stsp #include <fcntl.h>
27 13b2bc37 2022-10-23 stsp #include <err.h>
28 13b2bc37 2022-10-23 stsp #include <errno.h>
29 13b2bc37 2022-10-23 stsp #include <event.h>
30 13b2bc37 2022-10-23 stsp #include <limits.h>
31 13b2bc37 2022-10-23 stsp #include <pwd.h>
32 13b2bc37 2022-10-23 stsp #include <grp.h>
33 13b2bc37 2022-10-23 stsp #include <imsg.h>
34 13b2bc37 2022-10-23 stsp #include <sha1.h>
35 13b2bc37 2022-10-23 stsp #include <signal.h>
36 13b2bc37 2022-10-23 stsp #include <siphash.h>
37 13b2bc37 2022-10-23 stsp #include <stdarg.h>
38 13b2bc37 2022-10-23 stsp #include <stdio.h>
39 13b2bc37 2022-10-23 stsp #include <stdlib.h>
40 13b2bc37 2022-10-23 stsp #include <stdlib.h>
41 13b2bc37 2022-10-23 stsp #include <string.h>
42 13b2bc37 2022-10-23 stsp #include <syslog.h>
43 13b2bc37 2022-10-23 stsp #include <unistd.h>
45 13b2bc37 2022-10-23 stsp #include "got_error.h"
46 13b2bc37 2022-10-23 stsp #include "got_opentemp.h"
47 13b2bc37 2022-10-23 stsp #include "got_path.h"
48 13b2bc37 2022-10-23 stsp #include "got_repository.h"
49 13b2bc37 2022-10-23 stsp #include "got_object.h"
50 13b2bc37 2022-10-23 stsp #include "got_reference.h"
52 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
53 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
54 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
55 13b2bc37 2022-10-23 stsp #include "got_lib_sha1.h"
56 13b2bc37 2022-10-23 stsp #include "got_lib_gitproto.h"
57 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
58 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
60 13b2bc37 2022-10-23 stsp #include "gotd.h"
61 13b2bc37 2022-10-23 stsp #include "log.h"
62 13b2bc37 2022-10-23 stsp #include "repo_read.h"
63 13b2bc37 2022-10-23 stsp #include "repo_write.h"
65 13b2bc37 2022-10-23 stsp #ifndef nitems
66 13b2bc37 2022-10-23 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
69 13b2bc37 2022-10-23 stsp struct gotd_client {
70 13b2bc37 2022-10-23 stsp STAILQ_ENTRY(gotd_client) entry;
71 13b2bc37 2022-10-23 stsp enum gotd_client_state state;
72 13b2bc37 2022-10-23 stsp struct gotd_client_capability *capabilities;
73 13b2bc37 2022-10-23 stsp size_t ncapa_alloc;
74 13b2bc37 2022-10-23 stsp size_t ncapabilities;
75 13b2bc37 2022-10-23 stsp uint32_t id;
77 13b2bc37 2022-10-23 stsp int delta_cache_fd;
78 13b2bc37 2022-10-23 stsp struct gotd_imsgev iev;
79 13b2bc37 2022-10-23 stsp struct event tmo;
82 13b2bc37 2022-10-23 stsp struct gotd_child_proc *repo_read;
83 13b2bc37 2022-10-23 stsp struct gotd_child_proc *repo_write;
84 13b2bc37 2022-10-23 stsp char *packfile_path;
85 13b2bc37 2022-10-23 stsp char *packidx_path;
86 13b2bc37 2022-10-23 stsp int nref_updates;
88 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_clients, gotd_client);
90 13b2bc37 2022-10-23 stsp static struct gotd_clients gotd_clients[GOTD_CLIENT_TABLE_SIZE];
91 13b2bc37 2022-10-23 stsp static SIPHASH_KEY clients_hash_key;
92 13b2bc37 2022-10-23 stsp volatile int client_cnt;
93 13b2bc37 2022-10-23 stsp static struct timeval timeout = { 3600, 0 };
94 13b2bc37 2022-10-23 stsp static int inflight;
95 13b2bc37 2022-10-23 stsp static struct gotd gotd;
97 13b2bc37 2022-10-23 stsp void gotd_sighdlr(int sig, short event, void *arg);
98 f1752522 2022-10-29 stsp static void gotd_shutdown(void);
100 13b2bc37 2022-10-23 stsp __dead static void
103 88dec179 2022-10-24 stsp fprintf(stderr, "usage: %s [-dv] [-f config-file]\n", getprogname());
108 13b2bc37 2022-10-23 stsp unix_socket_listen(const char *unix_socket_path, uid_t uid, gid_t gid)
110 13b2bc37 2022-10-23 stsp struct sockaddr_un sun;
111 13b2bc37 2022-10-23 stsp int fd = -1;
112 13b2bc37 2022-10-23 stsp mode_t old_umask, mode;
114 13b2bc37 2022-10-23 stsp fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
115 13b2bc37 2022-10-23 stsp if (fd == -1) {
116 13b2bc37 2022-10-23 stsp log_warn("socket");
120 13b2bc37 2022-10-23 stsp sun.sun_family = AF_UNIX;
121 13b2bc37 2022-10-23 stsp if (strlcpy(sun.sun_path, unix_socket_path,
122 13b2bc37 2022-10-23 stsp sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
123 13b2bc37 2022-10-23 stsp log_warnx("%s: name too long", unix_socket_path);
128 13b2bc37 2022-10-23 stsp if (unlink(unix_socket_path) == -1) {
129 13b2bc37 2022-10-23 stsp if (errno != ENOENT) {
130 13b2bc37 2022-10-23 stsp log_warn("unlink %s", unix_socket_path);
136 13b2bc37 2022-10-23 stsp old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
137 13b2bc37 2022-10-23 stsp mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
139 13b2bc37 2022-10-23 stsp if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
140 13b2bc37 2022-10-23 stsp log_warn("bind: %s", unix_socket_path);
142 13b2bc37 2022-10-23 stsp umask(old_umask);
146 13b2bc37 2022-10-23 stsp umask(old_umask);
148 13b2bc37 2022-10-23 stsp if (chmod(unix_socket_path, mode) == -1) {
149 13b2bc37 2022-10-23 stsp log_warn("chmod %o %s", mode, unix_socket_path);
151 13b2bc37 2022-10-23 stsp unlink(unix_socket_path);
155 13b2bc37 2022-10-23 stsp if (chown(unix_socket_path, uid, gid) == -1) {
156 13b2bc37 2022-10-23 stsp log_warn("chown %s uid=%d gid=%d", unix_socket_path, uid, gid);
158 13b2bc37 2022-10-23 stsp unlink(unix_socket_path);
162 13b2bc37 2022-10-23 stsp if (listen(fd, GOTD_UNIX_SOCKET_BACKLOG) == -1) {
163 13b2bc37 2022-10-23 stsp log_warn("listen");
165 13b2bc37 2022-10-23 stsp unlink(unix_socket_path);
172 13b2bc37 2022-10-23 stsp static struct group *
173 13b2bc37 2022-10-23 stsp match_group(gid_t *groups, int ngroups, const char *unix_group_name)
175 13b2bc37 2022-10-23 stsp struct group *gr;
178 13b2bc37 2022-10-23 stsp for (i = 0; i < ngroups; i++) {
179 13b2bc37 2022-10-23 stsp gr = getgrgid(groups[i]);
180 13b2bc37 2022-10-23 stsp if (gr == NULL) {
181 13b2bc37 2022-10-23 stsp log_warn("getgrgid %d", groups[i]);
184 13b2bc37 2022-10-23 stsp if (strcmp(gr->gr_name, unix_group_name) == 0)
188 13b2bc37 2022-10-23 stsp return NULL;
192 13b2bc37 2022-10-23 stsp accept_reserve(int fd, struct sockaddr *addr, socklen_t *addrlen,
193 13b2bc37 2022-10-23 stsp int reserve, volatile int *counter)
197 13b2bc37 2022-10-23 stsp if (getdtablecount() + reserve +
198 13b2bc37 2022-10-23 stsp ((*counter + 1) * GOTD_FD_NEEDED) >= getdtablesize()) {
199 13b2bc37 2022-10-23 stsp log_debug("inflight fds exceeded");
200 13b2bc37 2022-10-23 stsp errno = EMFILE;
204 13b2bc37 2022-10-23 stsp if ((ret = accept4(fd, addr, addrlen,
205 13b2bc37 2022-10-23 stsp SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
206 13b2bc37 2022-10-23 stsp (*counter)++;
209 13b2bc37 2022-10-23 stsp return ret;
212 13b2bc37 2022-10-23 stsp static uint64_t
213 13b2bc37 2022-10-23 stsp client_hash(uint32_t client_id)
215 13b2bc37 2022-10-23 stsp return SipHash24(&clients_hash_key, &client_id, sizeof(client_id));
218 13b2bc37 2022-10-23 stsp static void
219 13b2bc37 2022-10-23 stsp add_client(struct gotd_client *client)
221 13b2bc37 2022-10-23 stsp uint64_t slot = client_hash(client->id) % nitems(gotd_clients);
222 13b2bc37 2022-10-23 stsp STAILQ_INSERT_HEAD(&gotd_clients[slot], client, entry);
223 13b2bc37 2022-10-23 stsp client_cnt++;
226 13b2bc37 2022-10-23 stsp static struct gotd_client *
227 13b2bc37 2022-10-23 stsp find_client(uint32_t client_id)
229 13b2bc37 2022-10-23 stsp uint64_t slot;
230 13b2bc37 2022-10-23 stsp struct gotd_client *c;
232 13b2bc37 2022-10-23 stsp slot = client_hash(client_id) % nitems(gotd_clients);
233 13b2bc37 2022-10-23 stsp STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
234 13b2bc37 2022-10-23 stsp if (c->id == client_id)
238 13b2bc37 2022-10-23 stsp return NULL;
241 13b2bc37 2022-10-23 stsp static uint32_t
242 13b2bc37 2022-10-23 stsp get_client_id(void)
244 13b2bc37 2022-10-23 stsp int duplicate = 0;
245 13b2bc37 2022-10-23 stsp uint32_t id;
248 13b2bc37 2022-10-23 stsp id = arc4random();
249 13b2bc37 2022-10-23 stsp duplicate = (find_client(id) != NULL);
250 13b2bc37 2022-10-23 stsp } while (duplicate || id == 0);
255 13b2bc37 2022-10-23 stsp static struct gotd_child_proc *
256 13b2bc37 2022-10-23 stsp get_client_proc(struct gotd_client *client)
258 13b2bc37 2022-10-23 stsp if (client->repo_read && client->repo_write) {
259 13b2bc37 2022-10-23 stsp fatalx("uid %d is reading and writing in the same session",
260 13b2bc37 2022-10-23 stsp client->euid);
261 13b2bc37 2022-10-23 stsp /* NOTREACHED */
264 13b2bc37 2022-10-23 stsp if (client->repo_read)
265 13b2bc37 2022-10-23 stsp return client->repo_read;
266 13b2bc37 2022-10-23 stsp else if (client->repo_write)
267 13b2bc37 2022-10-23 stsp return client->repo_write;
269 13b2bc37 2022-10-23 stsp return NULL;
273 13b2bc37 2022-10-23 stsp client_is_reading(struct gotd_client *client)
275 13b2bc37 2022-10-23 stsp return client->repo_read != NULL;
279 13b2bc37 2022-10-23 stsp client_is_writing(struct gotd_client *client)
281 13b2bc37 2022-10-23 stsp return client->repo_write != NULL;
284 13b2bc37 2022-10-23 stsp static const struct got_error *
285 13b2bc37 2022-10-23 stsp ensure_client_is_reading(struct gotd_client *client)
287 13b2bc37 2022-10-23 stsp if (!client_is_reading(client)) {
288 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
289 13b2bc37 2022-10-23 stsp "uid %d made a read-request but is not reading from "
290 13b2bc37 2022-10-23 stsp "a repository", client->euid);
293 13b2bc37 2022-10-23 stsp return NULL;
296 13b2bc37 2022-10-23 stsp static const struct got_error *
297 13b2bc37 2022-10-23 stsp ensure_client_is_writing(struct gotd_client *client)
299 13b2bc37 2022-10-23 stsp if (!client_is_writing(client)) {
300 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
301 13b2bc37 2022-10-23 stsp "uid %d made a write-request but is not writing to "
302 13b2bc37 2022-10-23 stsp "a repository", client->euid);
305 13b2bc37 2022-10-23 stsp return NULL;
308 13b2bc37 2022-10-23 stsp static const struct got_error *
309 13b2bc37 2022-10-23 stsp ensure_client_is_not_writing(struct gotd_client *client)
311 13b2bc37 2022-10-23 stsp if (client_is_writing(client)) {
312 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
313 13b2bc37 2022-10-23 stsp "uid %d made a read-request but is writing to "
314 13b2bc37 2022-10-23 stsp "a repository", client->euid);
317 13b2bc37 2022-10-23 stsp return NULL;
320 13b2bc37 2022-10-23 stsp static const struct got_error *
321 13b2bc37 2022-10-23 stsp ensure_client_is_not_reading(struct gotd_client *client)
323 13b2bc37 2022-10-23 stsp if (client_is_reading(client)) {
324 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
325 13b2bc37 2022-10-23 stsp "uid %d made a write-request but is reading from "
326 13b2bc37 2022-10-23 stsp "a repository", client->euid);
329 13b2bc37 2022-10-23 stsp return NULL;
332 13b2bc37 2022-10-23 stsp static void
333 13b2bc37 2022-10-23 stsp disconnect(struct gotd_client *client)
335 13b2bc37 2022-10-23 stsp struct gotd_imsg_disconnect idisconnect;
336 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc = get_client_proc(client);
337 13b2bc37 2022-10-23 stsp uint64_t slot;
339 13b2bc37 2022-10-23 stsp log_debug("uid %d: disconnecting", client->euid);
341 13b2bc37 2022-10-23 stsp idisconnect.client_id = client->id;
342 f1752522 2022-10-29 stsp if (proc) {
343 f1752522 2022-10-29 stsp if (gotd_imsg_compose_event(&proc->iev,
344 f1752522 2022-10-29 stsp GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
345 f1752522 2022-10-29 stsp &idisconnect, sizeof(idisconnect)) == -1)
346 f1752522 2022-10-29 stsp log_warn("imsg compose DISCONNECT");
348 13b2bc37 2022-10-23 stsp slot = client_hash(client->id) % nitems(gotd_clients);
349 13b2bc37 2022-10-23 stsp STAILQ_REMOVE(&gotd_clients[slot], client, gotd_client, entry);
350 13b2bc37 2022-10-23 stsp imsg_clear(&client->iev.ibuf);
351 13b2bc37 2022-10-23 stsp event_del(&client->iev.ev);
352 13b2bc37 2022-10-23 stsp evtimer_del(&client->tmo);
353 13b2bc37 2022-10-23 stsp close(client->fd);
354 13b2bc37 2022-10-23 stsp if (client->delta_cache_fd != -1)
355 13b2bc37 2022-10-23 stsp close(client->delta_cache_fd);
356 13b2bc37 2022-10-23 stsp if (client->packfile_path) {
357 13b2bc37 2022-10-23 stsp if (unlink(client->packfile_path) == -1 && errno != ENOENT)
358 13b2bc37 2022-10-23 stsp log_warn("unlink %s: ", client->packfile_path);
359 13b2bc37 2022-10-23 stsp free(client->packfile_path);
361 13b2bc37 2022-10-23 stsp if (client->packidx_path) {
362 13b2bc37 2022-10-23 stsp if (unlink(client->packidx_path) == -1 && errno != ENOENT)
363 13b2bc37 2022-10-23 stsp log_warn("unlink %s: ", client->packidx_path);
364 13b2bc37 2022-10-23 stsp free(client->packidx_path);
366 13b2bc37 2022-10-23 stsp free(client->capabilities);
367 13b2bc37 2022-10-23 stsp free(client);
368 13b2bc37 2022-10-23 stsp inflight--;
369 13b2bc37 2022-10-23 stsp client_cnt--;
372 13b2bc37 2022-10-23 stsp static void
373 13b2bc37 2022-10-23 stsp disconnect_on_error(struct gotd_client *client, const struct got_error *err)
375 13b2bc37 2022-10-23 stsp struct imsgbuf ibuf;
377 13b2bc37 2022-10-23 stsp log_warnx("uid %d: %s", client->euid, err->msg);
378 13b2bc37 2022-10-23 stsp if (err->code != GOT_ERR_EOF) {
379 13b2bc37 2022-10-23 stsp imsg_init(&ibuf, client->fd);
380 13b2bc37 2022-10-23 stsp gotd_imsg_send_error(&ibuf, 0, PROC_GOTD, err);
381 13b2bc37 2022-10-23 stsp imsg_clear(&ibuf);
383 13b2bc37 2022-10-23 stsp disconnect(client);
386 f1752522 2022-10-29 stsp static const struct got_error *
387 f1752522 2022-10-29 stsp send_repo_info(struct gotd_imsgev *iev, struct gotd_repo *repo)
389 f1752522 2022-10-29 stsp const struct got_error *err = NULL;
390 f1752522 2022-10-29 stsp struct gotd_imsg_info_repo irepo;
392 f1752522 2022-10-29 stsp memset(&irepo, 0, sizeof(irepo));
394 f1752522 2022-10-29 stsp if (strlcpy(irepo.repo_name, repo->name, sizeof(irepo.repo_name))
395 f1752522 2022-10-29 stsp >= sizeof(irepo.repo_name))
396 f1752522 2022-10-29 stsp return got_error_msg(GOT_ERR_NO_SPACE, "repo name too long");
397 f1752522 2022-10-29 stsp if (strlcpy(irepo.repo_path, repo->path, sizeof(irepo.repo_path))
398 f1752522 2022-10-29 stsp >= sizeof(irepo.repo_path))
399 f1752522 2022-10-29 stsp return got_error_msg(GOT_ERR_NO_SPACE, "repo path too long");
401 f1752522 2022-10-29 stsp if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_REPO, PROC_GOTD, -1,
402 f1752522 2022-10-29 stsp &irepo, sizeof(irepo)) == -1) {
403 f1752522 2022-10-29 stsp err = got_error_from_errno("imsg compose INFO_REPO");
405 f1752522 2022-10-29 stsp return err;
408 f1752522 2022-10-29 stsp return NULL;
411 f1752522 2022-10-29 stsp static const struct got_error *
412 f1752522 2022-10-29 stsp send_capability(struct gotd_client_capability *capa, struct gotd_imsgev* iev)
414 f1752522 2022-10-29 stsp const struct got_error *err = NULL;
415 f1752522 2022-10-29 stsp struct gotd_imsg_capability icapa;
416 f1752522 2022-10-29 stsp size_t len;
417 f1752522 2022-10-29 stsp struct ibuf *wbuf;
419 f1752522 2022-10-29 stsp memset(&icapa, 0, sizeof(icapa));
421 f1752522 2022-10-29 stsp icapa.key_len = strlen(capa->key);
422 f1752522 2022-10-29 stsp len = sizeof(icapa) + icapa.key_len;
423 f1752522 2022-10-29 stsp if (capa->value) {
424 f1752522 2022-10-29 stsp icapa.value_len = strlen(capa->value);
425 f1752522 2022-10-29 stsp len += icapa.value_len;
428 f1752522 2022-10-29 stsp wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_CAPABILITY, 0, 0, len);
429 f1752522 2022-10-29 stsp if (wbuf == NULL) {
430 f1752522 2022-10-29 stsp err = got_error_from_errno("imsg_create CAPABILITY");
431 f1752522 2022-10-29 stsp return err;
434 f1752522 2022-10-29 stsp if (imsg_add(wbuf, &icapa, sizeof(icapa)) == -1)
435 f1752522 2022-10-29 stsp return got_error_from_errno("imsg_add CAPABILITY");
436 f1752522 2022-10-29 stsp if (imsg_add(wbuf, capa->key, icapa.key_len) == -1)
437 f1752522 2022-10-29 stsp return got_error_from_errno("imsg_add CAPABILITY");
438 f1752522 2022-10-29 stsp if (capa->value) {
439 f1752522 2022-10-29 stsp if (imsg_add(wbuf, capa->value, icapa.value_len) == -1)
440 f1752522 2022-10-29 stsp return got_error_from_errno("imsg_add CAPABILITY");
443 f1752522 2022-10-29 stsp wbuf->fd = -1;
444 f1752522 2022-10-29 stsp imsg_close(&iev->ibuf, wbuf);
446 f1752522 2022-10-29 stsp gotd_imsg_event_add(iev);
448 f1752522 2022-10-29 stsp return NULL;
451 f1752522 2022-10-29 stsp static const struct got_error *
452 f1752522 2022-10-29 stsp send_client_info(struct gotd_imsgev *iev, struct gotd_client *client)
454 f1752522 2022-10-29 stsp const struct got_error *err = NULL;
455 f1752522 2022-10-29 stsp struct gotd_imsg_info_client iclient;
456 f1752522 2022-10-29 stsp struct gotd_child_proc *proc;
459 f1752522 2022-10-29 stsp memset(&iclient, 0, sizeof(iclient));
460 f1752522 2022-10-29 stsp iclient.euid = client->euid;
461 f1752522 2022-10-29 stsp iclient.egid = client->egid;
463 f1752522 2022-10-29 stsp proc = get_client_proc(client);
464 f1752522 2022-10-29 stsp if (proc) {
465 f1752522 2022-10-29 stsp if (strlcpy(iclient.repo_name, proc->chroot_path,
466 f1752522 2022-10-29 stsp sizeof(iclient.repo_name)) >= sizeof(iclient.repo_name)) {
467 f1752522 2022-10-29 stsp return got_error_msg(GOT_ERR_NO_SPACE,
468 f1752522 2022-10-29 stsp "repo name too long");
470 f1752522 2022-10-29 stsp if (client_is_writing(client))
471 f1752522 2022-10-29 stsp iclient.is_writing = 1;
474 f1752522 2022-10-29 stsp iclient.state = client->state;
475 f1752522 2022-10-29 stsp iclient.ncapabilities = client->ncapabilities;
477 f1752522 2022-10-29 stsp if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_CLIENT, PROC_GOTD, -1,
478 f1752522 2022-10-29 stsp &iclient, sizeof(iclient)) == -1) {
479 f1752522 2022-10-29 stsp err = got_error_from_errno("imsg compose INFO_CLIENT");
481 f1752522 2022-10-29 stsp return err;
484 f1752522 2022-10-29 stsp for (i = 0; i < client->ncapabilities; i++) {
485 f1752522 2022-10-29 stsp struct gotd_client_capability *capa;
486 f1752522 2022-10-29 stsp capa = &client->capabilities[i];
487 f1752522 2022-10-29 stsp err = send_capability(capa, iev);
489 f1752522 2022-10-29 stsp return err;
492 f1752522 2022-10-29 stsp return NULL;
495 f1752522 2022-10-29 stsp static const struct got_error *
496 f1752522 2022-10-29 stsp send_info(struct gotd_client *client)
498 f1752522 2022-10-29 stsp const struct got_error *err = NULL;
499 f1752522 2022-10-29 stsp struct gotd_imsg_info info;
500 f1752522 2022-10-29 stsp uint64_t slot;
501 f1752522 2022-10-29 stsp struct gotd_repo *repo;
503 f1752522 2022-10-29 stsp info.pid = gotd.pid;
504 f1752522 2022-10-29 stsp info.verbosity = gotd.verbosity;
505 f1752522 2022-10-29 stsp info.nrepos = gotd.nrepos;
506 f1752522 2022-10-29 stsp info.nclients = client_cnt - 1;
508 f1752522 2022-10-29 stsp if (gotd_imsg_compose_event(&client->iev, GOTD_IMSG_INFO, PROC_GOTD, -1,
509 f1752522 2022-10-29 stsp &info, sizeof(info)) == -1) {
510 f1752522 2022-10-29 stsp err = got_error_from_errno("imsg compose INFO");
512 f1752522 2022-10-29 stsp return err;
515 f1752522 2022-10-29 stsp TAILQ_FOREACH(repo, &gotd.repos, entry) {
516 f1752522 2022-10-29 stsp err = send_repo_info(&client->iev, repo);
518 f1752522 2022-10-29 stsp return err;
521 f1752522 2022-10-29 stsp for (slot = 0; slot < nitems(gotd_clients); slot++) {
522 f1752522 2022-10-29 stsp struct gotd_client *c;
523 f1752522 2022-10-29 stsp STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
524 f1752522 2022-10-29 stsp if (c->id == client->id)
526 f1752522 2022-10-29 stsp err = send_client_info(&client->iev, c);
528 f1752522 2022-10-29 stsp return err;
532 f1752522 2022-10-29 stsp return NULL;
535 f1752522 2022-10-29 stsp static const struct got_error *
536 f1752522 2022-10-29 stsp stop_gotd(struct gotd_client *client)
539 f1752522 2022-10-29 stsp if (client->euid != 0)
540 f1752522 2022-10-29 stsp return got_error_set_errno(EPERM, "stop");
542 f1752522 2022-10-29 stsp gotd_shutdown();
543 f1752522 2022-10-29 stsp /* NOTREACHED */
544 f1752522 2022-10-29 stsp return NULL;
547 13b2bc37 2022-10-23 stsp static struct gotd_child_proc *
548 13b2bc37 2022-10-23 stsp find_proc_by_repo_name(enum gotd_procid proc_id, const char *repo_name)
550 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc;
552 13b2bc37 2022-10-23 stsp size_t namelen;
554 13b2bc37 2022-10-23 stsp for (i = 0; i < gotd.nprocs; i++) {
555 13b2bc37 2022-10-23 stsp proc = &gotd.procs[i];
556 13b2bc37 2022-10-23 stsp if (proc->type != proc_id)
558 13b2bc37 2022-10-23 stsp namelen = strlen(proc->repo_name);
559 13b2bc37 2022-10-23 stsp if (strncmp(proc->repo_name, repo_name, namelen) != 0)
561 13b2bc37 2022-10-23 stsp if (repo_name[namelen] == '\0' ||
562 13b2bc37 2022-10-23 stsp strcmp(&repo_name[namelen], ".git") == 0)
563 13b2bc37 2022-10-23 stsp return proc;
566 13b2bc37 2022-10-23 stsp return NULL;
569 13b2bc37 2022-10-23 stsp static struct gotd_child_proc *
570 13b2bc37 2022-10-23 stsp find_proc_by_fd(int fd)
572 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc;
575 13b2bc37 2022-10-23 stsp for (i = 0; i < gotd.nprocs; i++) {
576 13b2bc37 2022-10-23 stsp proc = &gotd.procs[i];
577 13b2bc37 2022-10-23 stsp if (proc->iev.ibuf.fd == fd)
578 13b2bc37 2022-10-23 stsp return proc;
581 13b2bc37 2022-10-23 stsp return NULL;
584 13b2bc37 2022-10-23 stsp static const struct got_error *
585 13b2bc37 2022-10-23 stsp forward_list_refs_request(struct gotd_client *client, struct imsg *imsg)
587 13b2bc37 2022-10-23 stsp const struct got_error *err;
588 13b2bc37 2022-10-23 stsp struct gotd_imsg_list_refs ireq;
589 13b2bc37 2022-10-23 stsp struct gotd_imsg_list_refs_internal ilref;
590 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc = NULL;
591 13b2bc37 2022-10-23 stsp size_t datalen;
592 13b2bc37 2022-10-23 stsp int fd = -1;
594 13b2bc37 2022-10-23 stsp log_debug("list-refs request from uid %d", client->euid);
596 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
597 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
598 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
600 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, datalen);
602 13b2bc37 2022-10-23 stsp memset(&ilref, 0, sizeof(ilref));
603 13b2bc37 2022-10-23 stsp ilref.client_id = client->id;
605 13b2bc37 2022-10-23 stsp if (ireq.client_is_reading) {
606 13b2bc37 2022-10-23 stsp err = ensure_client_is_not_writing(client);
608 13b2bc37 2022-10-23 stsp return err;
609 13b2bc37 2022-10-23 stsp client->repo_read = find_proc_by_repo_name(PROC_REPO_READ,
610 13b2bc37 2022-10-23 stsp ireq.repo_name);
611 13b2bc37 2022-10-23 stsp if (client->repo_read == NULL)
612 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_NOT_GIT_REPO);
614 13b2bc37 2022-10-23 stsp err = ensure_client_is_not_reading(client);
616 13b2bc37 2022-10-23 stsp return err;
617 13b2bc37 2022-10-23 stsp client->repo_write = find_proc_by_repo_name(PROC_REPO_WRITE,
618 13b2bc37 2022-10-23 stsp ireq.repo_name);
619 13b2bc37 2022-10-23 stsp if (client->repo_write == NULL)
620 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_NOT_GIT_REPO);
623 13b2bc37 2022-10-23 stsp fd = dup(client->fd);
624 13b2bc37 2022-10-23 stsp if (fd == -1)
625 13b2bc37 2022-10-23 stsp return got_error_from_errno("dup");
627 13b2bc37 2022-10-23 stsp proc = get_client_proc(client);
628 f1752522 2022-10-29 stsp if (proc == NULL)
629 f1752522 2022-10-29 stsp fatalx("no process found for uid %d", client->euid);
630 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&proc->iev,
631 13b2bc37 2022-10-23 stsp GOTD_IMSG_LIST_REFS_INTERNAL, PROC_GOTD, fd,
632 13b2bc37 2022-10-23 stsp &ilref, sizeof(ilref)) == -1) {
633 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose WANT");
635 13b2bc37 2022-10-23 stsp return err;
638 13b2bc37 2022-10-23 stsp return NULL;
641 13b2bc37 2022-10-23 stsp static const struct got_error *
642 13b2bc37 2022-10-23 stsp forward_want(struct gotd_client *client, struct imsg *imsg)
644 13b2bc37 2022-10-23 stsp struct gotd_imsg_want ireq;
645 13b2bc37 2022-10-23 stsp struct gotd_imsg_want iwant;
646 13b2bc37 2022-10-23 stsp size_t datalen;
648 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
649 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
650 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
652 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, datalen);
654 13b2bc37 2022-10-23 stsp memset(&iwant, 0, sizeof(iwant));
655 13b2bc37 2022-10-23 stsp memcpy(iwant.object_id, ireq.object_id, SHA1_DIGEST_LENGTH);
656 13b2bc37 2022-10-23 stsp iwant.client_id = client->id;
658 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_read->iev, GOTD_IMSG_WANT,
659 13b2bc37 2022-10-23 stsp PROC_GOTD, -1, &iwant, sizeof(iwant)) == -1)
660 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg compose WANT");
662 13b2bc37 2022-10-23 stsp return NULL;
665 13b2bc37 2022-10-23 stsp static const struct got_error *
666 13b2bc37 2022-10-23 stsp forward_ref_update(struct gotd_client *client, struct imsg *imsg)
668 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
669 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update ireq;
670 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update *iref = NULL;
671 13b2bc37 2022-10-23 stsp size_t datalen;
673 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
674 13b2bc37 2022-10-23 stsp if (datalen < sizeof(ireq))
675 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
676 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, sizeof(ireq));
677 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq) + ireq.name_len)
678 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
680 13b2bc37 2022-10-23 stsp iref = malloc(datalen);
681 13b2bc37 2022-10-23 stsp if (iref == NULL)
682 13b2bc37 2022-10-23 stsp return got_error_from_errno("malloc");
683 13b2bc37 2022-10-23 stsp memcpy(iref, imsg->data, datalen);
685 13b2bc37 2022-10-23 stsp iref->client_id = client->id;
686 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_write->iev,
687 13b2bc37 2022-10-23 stsp GOTD_IMSG_REF_UPDATE, PROC_GOTD, -1, iref, datalen) == -1)
688 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose REF_UPDATE");
689 13b2bc37 2022-10-23 stsp free(iref);
690 13b2bc37 2022-10-23 stsp return err;
693 13b2bc37 2022-10-23 stsp static const struct got_error *
694 13b2bc37 2022-10-23 stsp forward_have(struct gotd_client *client, struct imsg *imsg)
696 13b2bc37 2022-10-23 stsp struct gotd_imsg_have ireq;
697 13b2bc37 2022-10-23 stsp struct gotd_imsg_have ihave;
698 13b2bc37 2022-10-23 stsp size_t datalen;
700 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
701 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
702 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
704 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, datalen);
706 13b2bc37 2022-10-23 stsp memset(&ihave, 0, sizeof(ihave));
707 13b2bc37 2022-10-23 stsp memcpy(ihave.object_id, ireq.object_id, SHA1_DIGEST_LENGTH);
708 13b2bc37 2022-10-23 stsp ihave.client_id = client->id;
710 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_read->iev, GOTD_IMSG_HAVE,
711 13b2bc37 2022-10-23 stsp PROC_GOTD, -1, &ihave, sizeof(ihave)) == -1)
712 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg compose HAVE");
714 13b2bc37 2022-10-23 stsp return NULL;
718 13b2bc37 2022-10-23 stsp client_has_capability(struct gotd_client *client, const char *capastr)
720 13b2bc37 2022-10-23 stsp struct gotd_client_capability *capa;
723 13b2bc37 2022-10-23 stsp if (client->ncapabilities == 0)
726 13b2bc37 2022-10-23 stsp for (i = 0; i < client->ncapabilities; i++) {
727 13b2bc37 2022-10-23 stsp capa = &client->capabilities[i];
728 13b2bc37 2022-10-23 stsp if (strcmp(capa->key, capastr) == 0)
735 13b2bc37 2022-10-23 stsp static const struct got_error *
736 13b2bc37 2022-10-23 stsp recv_capabilities(struct gotd_client *client, struct imsg *imsg)
738 13b2bc37 2022-10-23 stsp struct gotd_imsg_capabilities icapas;
739 13b2bc37 2022-10-23 stsp size_t datalen;
741 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
742 13b2bc37 2022-10-23 stsp if (datalen != sizeof(icapas))
743 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
744 13b2bc37 2022-10-23 stsp memcpy(&icapas, imsg->data, sizeof(icapas));
746 13b2bc37 2022-10-23 stsp client->ncapa_alloc = icapas.ncapabilities;
747 13b2bc37 2022-10-23 stsp client->capabilities = calloc(client->ncapa_alloc,
748 13b2bc37 2022-10-23 stsp sizeof(*client->capabilities));
749 13b2bc37 2022-10-23 stsp if (client->capabilities == NULL) {
750 13b2bc37 2022-10-23 stsp client->ncapa_alloc = 0;
751 13b2bc37 2022-10-23 stsp return got_error_from_errno("calloc");
754 13b2bc37 2022-10-23 stsp log_debug("expecting %zu capabilities from uid %d",
755 13b2bc37 2022-10-23 stsp client->ncapa_alloc, client->euid);
756 13b2bc37 2022-10-23 stsp return NULL;
759 13b2bc37 2022-10-23 stsp static const struct got_error *
760 13b2bc37 2022-10-23 stsp recv_capability(struct gotd_client *client, struct imsg *imsg)
762 13b2bc37 2022-10-23 stsp struct gotd_imsg_capability icapa;
763 13b2bc37 2022-10-23 stsp struct gotd_client_capability *capa;
764 13b2bc37 2022-10-23 stsp size_t datalen;
765 13b2bc37 2022-10-23 stsp char *key, *value = NULL;
767 13b2bc37 2022-10-23 stsp if (client->capabilities == NULL ||
768 13b2bc37 2022-10-23 stsp client->ncapabilities >= client->ncapa_alloc) {
769 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
770 13b2bc37 2022-10-23 stsp "unexpected capability received");
773 13b2bc37 2022-10-23 stsp memset(&icapa, 0, sizeof(icapa));
775 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
776 13b2bc37 2022-10-23 stsp if (datalen < sizeof(icapa))
777 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
778 13b2bc37 2022-10-23 stsp memcpy(&icapa, imsg->data, sizeof(icapa));
780 13b2bc37 2022-10-23 stsp if (datalen != sizeof(icapa) + icapa.key_len + icapa.value_len)
781 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
783 13b2bc37 2022-10-23 stsp key = malloc(icapa.key_len + 1);
784 13b2bc37 2022-10-23 stsp if (key == NULL)
785 13b2bc37 2022-10-23 stsp return got_error_from_errno("malloc");
786 13b2bc37 2022-10-23 stsp if (icapa.value_len > 0) {
787 13b2bc37 2022-10-23 stsp value = malloc(icapa.value_len + 1);
788 13b2bc37 2022-10-23 stsp if (value == NULL) {
790 13b2bc37 2022-10-23 stsp return got_error_from_errno("malloc");
794 13b2bc37 2022-10-23 stsp memcpy(key, imsg->data + sizeof(icapa), icapa.key_len);
795 13b2bc37 2022-10-23 stsp key[icapa.key_len] = '\0';
796 13b2bc37 2022-10-23 stsp if (value) {
797 13b2bc37 2022-10-23 stsp memcpy(value, imsg->data + sizeof(icapa) + icapa.key_len,
798 13b2bc37 2022-10-23 stsp icapa.value_len);
799 13b2bc37 2022-10-23 stsp value[icapa.value_len] = '\0';
802 13b2bc37 2022-10-23 stsp capa = &client->capabilities[client->ncapabilities++];
803 13b2bc37 2022-10-23 stsp capa->key = key;
804 13b2bc37 2022-10-23 stsp capa->value = value;
807 13b2bc37 2022-10-23 stsp log_debug("uid %d: capability %s=%s", client->euid, key, value);
809 13b2bc37 2022-10-23 stsp log_debug("uid %d: capability %s", client->euid, key);
811 13b2bc37 2022-10-23 stsp return NULL;
814 13b2bc37 2022-10-23 stsp static const struct got_error *
815 13b2bc37 2022-10-23 stsp send_packfile(struct gotd_client *client)
817 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
818 13b2bc37 2022-10-23 stsp struct gotd_imsg_send_packfile ipack;
819 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_pipe ipipe;
820 13b2bc37 2022-10-23 stsp int pipe[2];
822 13b2bc37 2022-10-23 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe) == -1)
823 13b2bc37 2022-10-23 stsp return got_error_from_errno("socketpair");
825 13b2bc37 2022-10-23 stsp memset(&ipack, 0, sizeof(ipack));
826 13b2bc37 2022-10-23 stsp memset(&ipipe, 0, sizeof(ipipe));
828 13b2bc37 2022-10-23 stsp ipack.client_id = client->id;
829 13b2bc37 2022-10-23 stsp if (client_has_capability(client, GOT_CAPA_SIDE_BAND_64K))
830 13b2bc37 2022-10-23 stsp ipack.report_progress = 1;
832 13b2bc37 2022-10-23 stsp client->delta_cache_fd = got_opentempfd();
833 13b2bc37 2022-10-23 stsp if (client->delta_cache_fd == -1)
834 13b2bc37 2022-10-23 stsp return got_error_from_errno("got_opentempfd");
836 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_read->iev,
837 13b2bc37 2022-10-23 stsp GOTD_IMSG_SEND_PACKFILE, PROC_GOTD, client->delta_cache_fd,
838 13b2bc37 2022-10-23 stsp &ipack, sizeof(ipack)) == -1) {
839 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose SEND_PACKFILE");
840 13b2bc37 2022-10-23 stsp close(pipe[0]);
841 13b2bc37 2022-10-23 stsp close(pipe[1]);
842 13b2bc37 2022-10-23 stsp return err;
845 13b2bc37 2022-10-23 stsp ipipe.client_id = client->id;
847 86769de8 2022-10-28 stsp /* Send pack pipe end 0 to repo_read. */
848 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_read->iev,
849 13b2bc37 2022-10-23 stsp GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[0],
850 13b2bc37 2022-10-23 stsp &ipipe, sizeof(ipipe)) == -1) {
851 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose PACKFILE_PIPE");
852 13b2bc37 2022-10-23 stsp close(pipe[1]);
853 13b2bc37 2022-10-23 stsp return err;
856 86769de8 2022-10-28 stsp /* Send pack pipe end 1 to gotsh(1) (expects just an fd, no data). */
857 86769de8 2022-10-28 stsp if (gotd_imsg_compose_event(&client->iev,
858 86769de8 2022-10-28 stsp GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[1], NULL, 0) == -1)
859 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose PACKFILE_PIPE");
861 13b2bc37 2022-10-23 stsp return err;
864 13b2bc37 2022-10-23 stsp static const struct got_error *
865 13b2bc37 2022-10-23 stsp recv_packfile(struct gotd_client *client)
867 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
868 13b2bc37 2022-10-23 stsp struct gotd_imsg_recv_packfile ipack;
869 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_pipe ipipe;
870 13b2bc37 2022-10-23 stsp struct gotd_imsg_packidx_file ifile;
871 13b2bc37 2022-10-23 stsp char *basepath = NULL, *pack_path = NULL, *idx_path = NULL;
872 13b2bc37 2022-10-23 stsp int packfd = -1, idxfd = -1;
873 13b2bc37 2022-10-23 stsp int pipe[2] = { -1, -1 };
875 13b2bc37 2022-10-23 stsp if (client->packfile_path) {
876 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_PRIVSEP_MSG,
877 13b2bc37 2022-10-23 stsp "uid %d already has a pack file", client->euid);
880 13b2bc37 2022-10-23 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe) == -1)
881 13b2bc37 2022-10-23 stsp return got_error_from_errno("socketpair");
883 13b2bc37 2022-10-23 stsp memset(&ipipe, 0, sizeof(ipipe));
884 13b2bc37 2022-10-23 stsp ipipe.client_id = client->id;
886 7fec5f4a 2022-10-28 stsp /* Send pack pipe end 0 to repo_write. */
887 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_write->iev,
888 13b2bc37 2022-10-23 stsp GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[0],
889 13b2bc37 2022-10-23 stsp &ipipe, sizeof(ipipe)) == -1) {
890 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose PACKFILE_PIPE");
891 13b2bc37 2022-10-23 stsp pipe[0] = -1;
894 13b2bc37 2022-10-23 stsp pipe[0] = -1;
896 7fec5f4a 2022-10-28 stsp /* Send pack pipe end 1 to gotsh(1) (expects just an fd, no data). */
897 7fec5f4a 2022-10-28 stsp if (gotd_imsg_compose_event(&client->iev,
898 7fec5f4a 2022-10-28 stsp GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[1], NULL, 0) == -1)
899 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose PACKFILE_PIPE");
900 13b2bc37 2022-10-23 stsp pipe[1] = -1;
902 13b2bc37 2022-10-23 stsp if (asprintf(&basepath, "%s/%s/receiving-from-uid-%d.pack",
903 13b2bc37 2022-10-23 stsp client->repo_write->chroot_path, GOT_OBJECTS_PACK_DIR,
904 13b2bc37 2022-10-23 stsp client->euid) == -1) {
905 13b2bc37 2022-10-23 stsp err = got_error_from_errno("asprintf");
909 13b2bc37 2022-10-23 stsp err = got_opentemp_named_fd(&pack_path, &packfd, basepath);
913 13b2bc37 2022-10-23 stsp free(basepath);
914 13b2bc37 2022-10-23 stsp if (asprintf(&basepath, "%s/%s/receiving-from-uid-%d.idx",
915 13b2bc37 2022-10-23 stsp client->repo_write->chroot_path, GOT_OBJECTS_PACK_DIR,
916 13b2bc37 2022-10-23 stsp client->euid) == -1) {
917 13b2bc37 2022-10-23 stsp err = got_error_from_errno("asprintf");
918 13b2bc37 2022-10-23 stsp basepath = NULL;
921 13b2bc37 2022-10-23 stsp err = got_opentemp_named_fd(&idx_path, &idxfd, basepath);
925 13b2bc37 2022-10-23 stsp memset(&ifile, 0, sizeof(ifile));
926 13b2bc37 2022-10-23 stsp ifile.client_id = client->id;
927 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_write->iev,
928 13b2bc37 2022-10-23 stsp GOTD_IMSG_PACKIDX_FILE, PROC_GOTD, idxfd,
929 13b2bc37 2022-10-23 stsp &ifile, sizeof(ifile)) == -1) {
930 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose PACKIDX_FILE");
931 13b2bc37 2022-10-23 stsp idxfd = -1;
934 13b2bc37 2022-10-23 stsp idxfd = -1;
936 13b2bc37 2022-10-23 stsp memset(&ipack, 0, sizeof(ipack));
937 13b2bc37 2022-10-23 stsp ipack.client_id = client->id;
938 13b2bc37 2022-10-23 stsp if (client_has_capability(client, GOT_CAPA_REPORT_STATUS))
939 13b2bc37 2022-10-23 stsp ipack.report_status = 1;
941 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->repo_write->iev,
942 13b2bc37 2022-10-23 stsp GOTD_IMSG_RECV_PACKFILE, PROC_GOTD, packfd,
943 13b2bc37 2022-10-23 stsp &ipack, sizeof(ipack)) == -1) {
944 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg compose RECV_PACKFILE");
945 13b2bc37 2022-10-23 stsp packfd = -1;
948 13b2bc37 2022-10-23 stsp packfd = -1;
951 13b2bc37 2022-10-23 stsp free(basepath);
952 13b2bc37 2022-10-23 stsp if (pipe[0] != -1 && close(pipe[0]) == -1 && err == NULL)
953 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
954 13b2bc37 2022-10-23 stsp if (pipe[1] != -1 && close(pipe[1]) == -1 && err == NULL)
955 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
956 13b2bc37 2022-10-23 stsp if (packfd != -1 && close(packfd) == -1 && err == NULL)
957 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
958 13b2bc37 2022-10-23 stsp if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
959 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
961 13b2bc37 2022-10-23 stsp free(pack_path);
962 13b2bc37 2022-10-23 stsp free(idx_path);
964 13b2bc37 2022-10-23 stsp client->packfile_path = pack_path;
965 13b2bc37 2022-10-23 stsp client->packidx_path = idx_path;
967 13b2bc37 2022-10-23 stsp return err;
970 13b2bc37 2022-10-23 stsp static void
971 13b2bc37 2022-10-23 stsp gotd_request(int fd, short events, void *arg)
973 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev = arg;
974 13b2bc37 2022-10-23 stsp struct imsgbuf *ibuf = &iev->ibuf;
975 13b2bc37 2022-10-23 stsp struct gotd_client *client = iev->handler_arg;
976 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
977 13b2bc37 2022-10-23 stsp struct imsg imsg;
980 13b2bc37 2022-10-23 stsp if (events & EV_WRITE) {
981 13b2bc37 2022-10-23 stsp while (ibuf->w.queued) {
982 13b2bc37 2022-10-23 stsp n = msgbuf_write(&ibuf->w);
983 13b2bc37 2022-10-23 stsp if (n == -1 && errno == EPIPE) {
985 13b2bc37 2022-10-23 stsp * The client has closed its socket.
986 13b2bc37 2022-10-23 stsp * This can happen when Git clients are
987 13b2bc37 2022-10-23 stsp * done sending pack file data.
989 13b2bc37 2022-10-23 stsp msgbuf_clear(&ibuf->w);
991 13b2bc37 2022-10-23 stsp } else if (n == -1 && errno != EAGAIN) {
992 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_flush");
993 13b2bc37 2022-10-23 stsp disconnect_on_error(client, err);
996 13b2bc37 2022-10-23 stsp if (n == 0) {
997 13b2bc37 2022-10-23 stsp /* Connection closed. */
998 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_EOF);
999 13b2bc37 2022-10-23 stsp disconnect_on_error(client, err);
1004 f1752522 2022-10-29 stsp /* Disconnect gotctl(8) now that messages have been sent. */
1005 f1752522 2022-10-29 stsp if (!client_is_reading(client) && !client_is_writing(client)) {
1006 f1752522 2022-10-29 stsp disconnect(client);
1011 13b2bc37 2022-10-23 stsp if ((events & EV_READ) == 0)
1014 13b2bc37 2022-10-23 stsp memset(&imsg, 0, sizeof(imsg));
1016 13b2bc37 2022-10-23 stsp while (err == NULL) {
1017 13b2bc37 2022-10-23 stsp err = gotd_imsg_recv(&imsg, ibuf, 0);
1018 13b2bc37 2022-10-23 stsp if (err) {
1019 13b2bc37 2022-10-23 stsp if (err->code == GOT_ERR_PRIVSEP_READ)
1020 13b2bc37 2022-10-23 stsp err = NULL;
1024 13b2bc37 2022-10-23 stsp evtimer_del(&client->tmo);
1026 13b2bc37 2022-10-23 stsp switch (imsg.hdr.type) {
1027 f1752522 2022-10-29 stsp case GOTD_IMSG_INFO:
1028 f1752522 2022-10-29 stsp err = send_info(client);
1030 f1752522 2022-10-29 stsp case GOTD_IMSG_STOP:
1031 f1752522 2022-10-29 stsp err = stop_gotd(client);
1033 13b2bc37 2022-10-23 stsp case GOTD_IMSG_LIST_REFS:
1034 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_LIST_REFS) {
1035 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1036 13b2bc37 2022-10-23 stsp "unexpected list-refs request received");
1039 13b2bc37 2022-10-23 stsp err = forward_list_refs_request(client, &imsg);
1042 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_CAPABILITIES;
1043 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting capabilities",
1044 13b2bc37 2022-10-23 stsp client->euid);
1046 13b2bc37 2022-10-23 stsp case GOTD_IMSG_CAPABILITIES:
1047 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_CAPABILITIES) {
1048 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1049 13b2bc37 2022-10-23 stsp "unexpected capabilities received");
1052 13b2bc37 2022-10-23 stsp log_debug("receiving capabilities from uid %d",
1053 13b2bc37 2022-10-23 stsp client->euid);
1054 13b2bc37 2022-10-23 stsp err = recv_capabilities(client, &imsg);
1056 13b2bc37 2022-10-23 stsp case GOTD_IMSG_CAPABILITY:
1057 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_CAPABILITIES) {
1058 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1059 13b2bc37 2022-10-23 stsp "unexpected capability received");
1062 13b2bc37 2022-10-23 stsp err = recv_capability(client, &imsg);
1063 13b2bc37 2022-10-23 stsp if (err || client->ncapabilities < client->ncapa_alloc)
1065 13b2bc37 2022-10-23 stsp if (client_is_reading(client)) {
1066 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_WANT;
1067 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting want-lines",
1068 13b2bc37 2022-10-23 stsp client->euid);
1069 13b2bc37 2022-10-23 stsp } else if (client_is_writing(client)) {
1070 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_REF_UPDATE;
1071 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting ref-update-lines",
1072 13b2bc37 2022-10-23 stsp client->euid);
1074 13b2bc37 2022-10-23 stsp fatalx("client %d is both reading and writing",
1075 13b2bc37 2022-10-23 stsp client->euid);
1077 13b2bc37 2022-10-23 stsp case GOTD_IMSG_WANT:
1078 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_WANT) {
1079 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1080 13b2bc37 2022-10-23 stsp "unexpected want-line received");
1083 13b2bc37 2022-10-23 stsp log_debug("received want-line from uid %d",
1084 13b2bc37 2022-10-23 stsp client->euid);
1085 13b2bc37 2022-10-23 stsp err = ensure_client_is_reading(client);
1088 13b2bc37 2022-10-23 stsp err = forward_want(client, &imsg);
1090 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATE:
1091 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_REF_UPDATE) {
1092 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1093 13b2bc37 2022-10-23 stsp "unexpected ref-update-line received");
1096 13b2bc37 2022-10-23 stsp log_debug("received ref-update-line from uid %d",
1097 13b2bc37 2022-10-23 stsp client->euid);
1098 13b2bc37 2022-10-23 stsp err = ensure_client_is_writing(client);
1101 13b2bc37 2022-10-23 stsp err = forward_ref_update(client, &imsg);
1104 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_MORE_REF_UPDATES;
1106 13b2bc37 2022-10-23 stsp case GOTD_IMSG_HAVE:
1107 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_HAVE) {
1108 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1109 13b2bc37 2022-10-23 stsp "unexpected have-line received");
1112 13b2bc37 2022-10-23 stsp log_debug("received have-line from uid %d",
1113 13b2bc37 2022-10-23 stsp client->euid);
1114 13b2bc37 2022-10-23 stsp err = ensure_client_is_reading(client);
1117 13b2bc37 2022-10-23 stsp err = forward_have(client, &imsg);
1121 13b2bc37 2022-10-23 stsp case GOTD_IMSG_FLUSH:
1122 13b2bc37 2022-10-23 stsp if (client->state == GOTD_STATE_EXPECT_WANT ||
1123 13b2bc37 2022-10-23 stsp client->state == GOTD_STATE_EXPECT_HAVE) {
1124 13b2bc37 2022-10-23 stsp err = ensure_client_is_reading(client);
1127 13b2bc37 2022-10-23 stsp } else if (client->state ==
1128 13b2bc37 2022-10-23 stsp GOTD_STATE_EXPECT_MORE_REF_UPDATES) {
1129 13b2bc37 2022-10-23 stsp err = ensure_client_is_writing(client);
1133 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1134 13b2bc37 2022-10-23 stsp "unexpected flush-pkt received");
1137 13b2bc37 2022-10-23 stsp log_debug("received flush-pkt from uid %d",
1138 13b2bc37 2022-10-23 stsp client->euid);
1139 13b2bc37 2022-10-23 stsp if (client->state == GOTD_STATE_EXPECT_WANT) {
1140 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_HAVE;
1141 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting have-lines",
1142 13b2bc37 2022-10-23 stsp client->euid);
1143 13b2bc37 2022-10-23 stsp } else if (client->state == GOTD_STATE_EXPECT_HAVE) {
1144 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_DONE;
1145 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting 'done'",
1146 13b2bc37 2022-10-23 stsp client->euid);
1147 13b2bc37 2022-10-23 stsp } else if (client->state ==
1148 13b2bc37 2022-10-23 stsp GOTD_STATE_EXPECT_MORE_REF_UPDATES) {
1149 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_PACKFILE;
1150 13b2bc37 2022-10-23 stsp log_debug("uid %d: expecting packfile",
1151 13b2bc37 2022-10-23 stsp client->euid);
1152 13b2bc37 2022-10-23 stsp err = recv_packfile(client);
1154 13b2bc37 2022-10-23 stsp /* should not happen, see above */
1155 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1156 13b2bc37 2022-10-23 stsp "unexpected client state");
1160 13b2bc37 2022-10-23 stsp case GOTD_IMSG_DONE:
1161 13b2bc37 2022-10-23 stsp if (client->state != GOTD_STATE_EXPECT_HAVE &&
1162 13b2bc37 2022-10-23 stsp client->state != GOTD_STATE_EXPECT_DONE) {
1163 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_REQUEST,
1164 13b2bc37 2022-10-23 stsp "unexpected flush-pkt received");
1167 13b2bc37 2022-10-23 stsp log_debug("received 'done' from uid %d", client->euid);
1168 13b2bc37 2022-10-23 stsp err = ensure_client_is_reading(client);
1171 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_DONE;
1172 13b2bc37 2022-10-23 stsp err = send_packfile(client);
1175 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1179 13b2bc37 2022-10-23 stsp imsg_free(&imsg);
1182 13b2bc37 2022-10-23 stsp if (err) {
1183 13b2bc37 2022-10-23 stsp if (err->code != GOT_ERR_EOF ||
1184 13b2bc37 2022-10-23 stsp client->state != GOTD_STATE_EXPECT_PACKFILE)
1185 13b2bc37 2022-10-23 stsp disconnect_on_error(client, err);
1187 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(&client->iev);
1188 13b2bc37 2022-10-23 stsp evtimer_add(&client->tmo, &timeout);
1192 13b2bc37 2022-10-23 stsp static void
1193 13b2bc37 2022-10-23 stsp gotd_request_timeout(int fd, short events, void *arg)
1195 13b2bc37 2022-10-23 stsp struct gotd_client *client = arg;
1197 13b2bc37 2022-10-23 stsp log_debug("disconnecting uid %d due to timeout", client->euid);
1198 13b2bc37 2022-10-23 stsp disconnect(client);
1201 13b2bc37 2022-10-23 stsp static void
1202 13b2bc37 2022-10-23 stsp gotd_accept(int fd, short event, void *arg)
1204 13b2bc37 2022-10-23 stsp struct sockaddr_storage ss;
1205 13b2bc37 2022-10-23 stsp struct timeval backoff;
1206 13b2bc37 2022-10-23 stsp socklen_t len;
1207 13b2bc37 2022-10-23 stsp int s = -1;
1208 13b2bc37 2022-10-23 stsp struct gotd_client *client = NULL;
1209 13b2bc37 2022-10-23 stsp uid_t euid;
1210 13b2bc37 2022-10-23 stsp gid_t egid;
1212 13b2bc37 2022-10-23 stsp backoff.tv_sec = 1;
1213 13b2bc37 2022-10-23 stsp backoff.tv_usec = 0;
1215 13b2bc37 2022-10-23 stsp if (event_add(&gotd.ev, NULL) == -1) {
1216 13b2bc37 2022-10-23 stsp log_warn("event_add");
1219 13b2bc37 2022-10-23 stsp if (event & EV_TIMEOUT)
1222 13b2bc37 2022-10-23 stsp len = sizeof(ss);
1224 13b2bc37 2022-10-23 stsp s = accept_reserve(fd, (struct sockaddr *)&ss, &len, GOTD_FD_RESERVE,
1225 13b2bc37 2022-10-23 stsp &inflight);
1227 13b2bc37 2022-10-23 stsp if (s == -1) {
1228 13b2bc37 2022-10-23 stsp switch (errno) {
1229 13b2bc37 2022-10-23 stsp case EINTR:
1230 13b2bc37 2022-10-23 stsp case EWOULDBLOCK:
1231 13b2bc37 2022-10-23 stsp case ECONNABORTED:
1233 13b2bc37 2022-10-23 stsp case EMFILE:
1234 13b2bc37 2022-10-23 stsp case ENFILE:
1235 13b2bc37 2022-10-23 stsp event_del(&gotd.ev);
1236 13b2bc37 2022-10-23 stsp evtimer_add(&gotd.pause, &backoff);
1239 13b2bc37 2022-10-23 stsp log_warn("%s: accept", __func__);
1244 13b2bc37 2022-10-23 stsp if (client_cnt >= GOTD_MAXCLIENTS)
1247 13b2bc37 2022-10-23 stsp if (getpeereid(s, &euid, &egid) == -1) {
1248 13b2bc37 2022-10-23 stsp log_warn("%s: getpeereid", __func__);
1252 13b2bc37 2022-10-23 stsp client = calloc(1, sizeof(*client));
1253 13b2bc37 2022-10-23 stsp if (client == NULL) {
1254 13b2bc37 2022-10-23 stsp log_warn("%s: calloc", __func__);
1258 13b2bc37 2022-10-23 stsp client->state = GOTD_STATE_EXPECT_LIST_REFS;
1259 13b2bc37 2022-10-23 stsp client->id = get_client_id();
1260 13b2bc37 2022-10-23 stsp client->fd = s;
1262 13b2bc37 2022-10-23 stsp client->delta_cache_fd = -1;
1263 13b2bc37 2022-10-23 stsp client->euid = euid;
1264 13b2bc37 2022-10-23 stsp client->egid = egid;
1265 13b2bc37 2022-10-23 stsp client->nref_updates = -1;
1267 13b2bc37 2022-10-23 stsp imsg_init(&client->iev.ibuf, client->fd);
1268 13b2bc37 2022-10-23 stsp client->iev.handler = gotd_request;
1269 13b2bc37 2022-10-23 stsp client->iev.events = EV_READ;
1270 13b2bc37 2022-10-23 stsp client->iev.handler_arg = client;
1272 13b2bc37 2022-10-23 stsp event_set(&client->iev.ev, client->fd, EV_READ, gotd_request,
1273 13b2bc37 2022-10-23 stsp &client->iev);
1274 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(&client->iev);
1276 13b2bc37 2022-10-23 stsp evtimer_set(&client->tmo, gotd_request_timeout, client);
1278 13b2bc37 2022-10-23 stsp add_client(client);
1279 13b2bc37 2022-10-23 stsp log_debug("%s: new client uid %d connected on fd %d", __func__,
1280 13b2bc37 2022-10-23 stsp client->euid, client->fd);
1283 13b2bc37 2022-10-23 stsp inflight--;
1284 13b2bc37 2022-10-23 stsp if (s != -1)
1286 13b2bc37 2022-10-23 stsp free(client);
1289 13b2bc37 2022-10-23 stsp static void
1290 13b2bc37 2022-10-23 stsp gotd_accept_paused(int fd, short event, void *arg)
1292 13b2bc37 2022-10-23 stsp event_add(&gotd.ev, NULL);
1295 13b2bc37 2022-10-23 stsp static const char *gotd_proc_names[PROC_MAX] = {
1297 13b2bc37 2022-10-23 stsp "repo_read",
1298 13b2bc37 2022-10-23 stsp "repo_write"
1301 13b2bc37 2022-10-23 stsp static struct gotd_child_proc *
1302 13b2bc37 2022-10-23 stsp get_proc_for_pid(pid_t pid)
1304 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc;
1307 13b2bc37 2022-10-23 stsp for (i = 0; i < gotd.nprocs; i++) {
1308 13b2bc37 2022-10-23 stsp proc = &gotd.procs[i];
1309 13b2bc37 2022-10-23 stsp if (proc->pid == pid)
1310 13b2bc37 2022-10-23 stsp return proc;
1313 13b2bc37 2022-10-23 stsp return NULL;
1316 13b2bc37 2022-10-23 stsp static void
1317 13b2bc37 2022-10-23 stsp kill_proc(struct gotd_child_proc *proc, int fatal)
1319 13b2bc37 2022-10-23 stsp if (fatal) {
1320 13b2bc37 2022-10-23 stsp log_warnx("sending SIGKILL to PID %d", proc->pid);
1321 13b2bc37 2022-10-23 stsp kill(proc->pid, SIGKILL);
1323 13b2bc37 2022-10-23 stsp kill(proc->pid, SIGTERM);
1326 13b2bc37 2022-10-23 stsp static void
1327 13b2bc37 2022-10-23 stsp gotd_shutdown(void)
1329 13b2bc37 2022-10-23 stsp pid_t pid;
1330 13b2bc37 2022-10-23 stsp int status, i;
1331 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc;
1333 13b2bc37 2022-10-23 stsp for (i = 0; i < gotd.nprocs; i++) {
1334 13b2bc37 2022-10-23 stsp proc = &gotd.procs[i];
1335 13b2bc37 2022-10-23 stsp msgbuf_clear(&proc->iev.ibuf.w);
1336 13b2bc37 2022-10-23 stsp close(proc->iev.ibuf.fd);
1337 13b2bc37 2022-10-23 stsp kill_proc(proc, 0);
1340 13b2bc37 2022-10-23 stsp log_debug("waiting for children to terminate");
1342 13b2bc37 2022-10-23 stsp pid = wait(&status);
1343 13b2bc37 2022-10-23 stsp if (pid == -1) {
1344 13b2bc37 2022-10-23 stsp if (errno != EINTR && errno != ECHILD)
1345 13b2bc37 2022-10-23 stsp fatal("wait");
1346 13b2bc37 2022-10-23 stsp } else if (WIFSIGNALED(status)) {
1347 13b2bc37 2022-10-23 stsp proc = get_proc_for_pid(pid);
1348 13b2bc37 2022-10-23 stsp log_warnx("%s %s child process terminated; signal %d",
1349 13b2bc37 2022-10-23 stsp proc ? gotd_proc_names[proc->type] : "",
1350 13b2bc37 2022-10-23 stsp proc ? proc->chroot_path : "", WTERMSIG(status));
1352 13b2bc37 2022-10-23 stsp } while (pid != -1 || (pid == -1 && errno == EINTR));
1354 13b2bc37 2022-10-23 stsp log_info("terminating");
1359 13b2bc37 2022-10-23 stsp gotd_sighdlr(int sig, short event, void *arg)
1362 13b2bc37 2022-10-23 stsp * Normal signal handler rules don't apply because libevent
1363 13b2bc37 2022-10-23 stsp * decouples for us.
1366 13b2bc37 2022-10-23 stsp switch (sig) {
1367 13b2bc37 2022-10-23 stsp case SIGHUP:
1368 13b2bc37 2022-10-23 stsp log_info("%s: ignoring SIGHUP", __func__);
1370 13b2bc37 2022-10-23 stsp case SIGUSR1:
1371 13b2bc37 2022-10-23 stsp log_info("%s: ignoring SIGUSR1", __func__);
1373 13b2bc37 2022-10-23 stsp case SIGTERM:
1374 13b2bc37 2022-10-23 stsp case SIGINT:
1375 13b2bc37 2022-10-23 stsp gotd_shutdown();
1376 13b2bc37 2022-10-23 stsp log_warnx("gotd terminating");
1380 13b2bc37 2022-10-23 stsp fatalx("unexpected signal");
1384 13b2bc37 2022-10-23 stsp static const struct got_error *
1385 13b2bc37 2022-10-23 stsp ensure_proc_is_reading(struct gotd_client *client,
1386 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc)
1388 13b2bc37 2022-10-23 stsp if (!client_is_reading(client)) {
1389 13b2bc37 2022-10-23 stsp kill_proc(proc, 1);
1390 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
1391 13b2bc37 2022-10-23 stsp "PID %d handled a read-request for uid %d but this "
1392 13b2bc37 2022-10-23 stsp "user is not reading from a repository", proc->pid,
1393 13b2bc37 2022-10-23 stsp client->euid);
1396 13b2bc37 2022-10-23 stsp return NULL;
1399 13b2bc37 2022-10-23 stsp static const struct got_error *
1400 13b2bc37 2022-10-23 stsp ensure_proc_is_writing(struct gotd_client *client,
1401 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc)
1403 13b2bc37 2022-10-23 stsp if (!client_is_writing(client)) {
1404 13b2bc37 2022-10-23 stsp kill_proc(proc, 1);
1405 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_PACKET,
1406 13b2bc37 2022-10-23 stsp "PID %d handled a write-request for uid %d but this "
1407 13b2bc37 2022-10-23 stsp "user is not writing to a repository", proc->pid,
1408 13b2bc37 2022-10-23 stsp client->euid);
1411 13b2bc37 2022-10-23 stsp return NULL;
1414 13b2bc37 2022-10-23 stsp static int
1415 13b2bc37 2022-10-23 stsp verify_imsg_src(struct gotd_client *client, struct gotd_child_proc *proc,
1416 13b2bc37 2022-10-23 stsp struct imsg *imsg)
1418 13b2bc37 2022-10-23 stsp const struct got_error *err;
1419 13b2bc37 2022-10-23 stsp struct gotd_child_proc *client_proc;
1420 13b2bc37 2022-10-23 stsp int ret = 0;
1422 13b2bc37 2022-10-23 stsp client_proc = get_client_proc(client);
1423 f1752522 2022-10-29 stsp if (client_proc == NULL)
1424 f1752522 2022-10-29 stsp fatalx("no process found for uid %d", client->euid);
1426 13b2bc37 2022-10-23 stsp if (proc->pid != client_proc->pid) {
1427 13b2bc37 2022-10-23 stsp kill_proc(proc, 1);
1428 13b2bc37 2022-10-23 stsp log_warnx("received message from PID %d for uid %d, while "
1429 13b2bc37 2022-10-23 stsp "PID %d is the process serving this user",
1430 13b2bc37 2022-10-23 stsp proc->pid, client->euid, client_proc->pid);
1434 13b2bc37 2022-10-23 stsp switch (imsg->hdr.type) {
1435 13b2bc37 2022-10-23 stsp case GOTD_IMSG_ERROR:
1438 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKFILE_DONE:
1439 13b2bc37 2022-10-23 stsp err = ensure_proc_is_reading(client, proc);
1441 13b2bc37 2022-10-23 stsp log_warnx("uid %d: %s", client->euid, err->msg);
1445 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKFILE_INSTALL:
1446 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATES_START:
1447 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATE:
1448 13b2bc37 2022-10-23 stsp err = ensure_proc_is_writing(client, proc);
1450 13b2bc37 2022-10-23 stsp log_warnx("uid %d: %s", client->euid, err->msg);
1455 13b2bc37 2022-10-23 stsp log_debug("%s: unexpected imsg %d", __func__, imsg->hdr.type);
1459 13b2bc37 2022-10-23 stsp return ret;
1462 13b2bc37 2022-10-23 stsp static const struct got_error *
1463 13b2bc37 2022-10-23 stsp recv_packfile_done(uint32_t *client_id, struct imsg *imsg)
1465 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_done idone;
1466 13b2bc37 2022-10-23 stsp size_t datalen;
1468 13b2bc37 2022-10-23 stsp log_debug("packfile-done received");
1470 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1471 13b2bc37 2022-10-23 stsp if (datalen != sizeof(idone))
1472 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1473 13b2bc37 2022-10-23 stsp memcpy(&idone, imsg->data, sizeof(idone));
1475 13b2bc37 2022-10-23 stsp *client_id = idone.client_id;
1476 13b2bc37 2022-10-23 stsp return NULL;
1479 13b2bc37 2022-10-23 stsp static const struct got_error *
1480 13b2bc37 2022-10-23 stsp recv_packfile_install(uint32_t *client_id, struct imsg *imsg)
1482 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_install inst;
1483 13b2bc37 2022-10-23 stsp size_t datalen;
1485 13b2bc37 2022-10-23 stsp log_debug("packfile-install received");
1487 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1488 13b2bc37 2022-10-23 stsp if (datalen != sizeof(inst))
1489 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1490 13b2bc37 2022-10-23 stsp memcpy(&inst, imsg->data, sizeof(inst));
1492 13b2bc37 2022-10-23 stsp *client_id = inst.client_id;
1493 13b2bc37 2022-10-23 stsp return NULL;
1496 13b2bc37 2022-10-23 stsp static const struct got_error *
1497 13b2bc37 2022-10-23 stsp recv_ref_updates_start(uint32_t *client_id, struct imsg *imsg)
1499 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_updates_start istart;
1500 13b2bc37 2022-10-23 stsp size_t datalen;
1502 13b2bc37 2022-10-23 stsp log_debug("ref-updates-start received");
1504 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1505 13b2bc37 2022-10-23 stsp if (datalen != sizeof(istart))
1506 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1507 13b2bc37 2022-10-23 stsp memcpy(&istart, imsg->data, sizeof(istart));
1509 13b2bc37 2022-10-23 stsp *client_id = istart.client_id;
1510 13b2bc37 2022-10-23 stsp return NULL;
1513 13b2bc37 2022-10-23 stsp static const struct got_error *
1514 13b2bc37 2022-10-23 stsp recv_ref_update(uint32_t *client_id, struct imsg *imsg)
1516 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update iref;
1517 13b2bc37 2022-10-23 stsp size_t datalen;
1519 13b2bc37 2022-10-23 stsp log_debug("ref-update received");
1521 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1522 13b2bc37 2022-10-23 stsp if (datalen < sizeof(iref))
1523 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1524 13b2bc37 2022-10-23 stsp memcpy(&iref, imsg->data, sizeof(iref));
1526 13b2bc37 2022-10-23 stsp *client_id = iref.client_id;
1527 13b2bc37 2022-10-23 stsp return NULL;
1530 13b2bc37 2022-10-23 stsp static const struct got_error *
1531 13b2bc37 2022-10-23 stsp send_ref_update_ok(struct gotd_client *client,
1532 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update *iref, const char *refname)
1534 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update_ok iok;
1535 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
1536 13b2bc37 2022-10-23 stsp size_t len;
1538 13b2bc37 2022-10-23 stsp memset(&iok, 0, sizeof(iok));
1539 13b2bc37 2022-10-23 stsp iok.client_id = client->id;
1540 13b2bc37 2022-10-23 stsp memcpy(iok.old_id, iref->old_id, SHA1_DIGEST_LENGTH);
1541 13b2bc37 2022-10-23 stsp memcpy(iok.new_id, iref->new_id, SHA1_DIGEST_LENGTH);
1542 13b2bc37 2022-10-23 stsp iok.name_len = strlen(refname);
1544 13b2bc37 2022-10-23 stsp len = sizeof(iok) + iok.name_len;
1545 13b2bc37 2022-10-23 stsp wbuf = imsg_create(&client->iev.ibuf, GOTD_IMSG_REF_UPDATE_OK,
1546 13b2bc37 2022-10-23 stsp PROC_GOTD, gotd.pid, len);
1547 13b2bc37 2022-10-23 stsp if (wbuf == NULL)
1548 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_create REF_UPDATE_OK");
1550 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &iok, sizeof(iok)) == -1)
1551 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE_OK");
1552 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, refname, iok.name_len) == -1)
1553 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE_OK");
1555 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
1556 13b2bc37 2022-10-23 stsp imsg_close(&client->iev.ibuf, wbuf);
1557 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(&client->iev);
1558 13b2bc37 2022-10-23 stsp return NULL;
1561 13b2bc37 2022-10-23 stsp static void
1562 13b2bc37 2022-10-23 stsp send_refs_updated(struct gotd_client *client)
1564 13b2bc37 2022-10-23 stsp if (gotd_imsg_compose_event(&client->iev,
1565 13b2bc37 2022-10-23 stsp GOTD_IMSG_REFS_UPDATED, PROC_GOTD, -1, NULL, 0) == -1)
1566 13b2bc37 2022-10-23 stsp log_warn("imsg compose REFS_UPDATED");
1569 13b2bc37 2022-10-23 stsp static const struct got_error *
1570 13b2bc37 2022-10-23 stsp send_ref_update_ng(struct gotd_client *client,
1571 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update *iref, const char *refname,
1572 13b2bc37 2022-10-23 stsp const char *reason)
1574 13b2bc37 2022-10-23 stsp const struct got_error *ng_err;
1575 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update_ng ing;
1576 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
1577 13b2bc37 2022-10-23 stsp size_t len;
1579 13b2bc37 2022-10-23 stsp memset(&ing, 0, sizeof(ing));
1580 13b2bc37 2022-10-23 stsp ing.client_id = client->id;
1581 13b2bc37 2022-10-23 stsp memcpy(ing.old_id, iref->old_id, SHA1_DIGEST_LENGTH);
1582 13b2bc37 2022-10-23 stsp memcpy(ing.new_id, iref->new_id, SHA1_DIGEST_LENGTH);
1583 13b2bc37 2022-10-23 stsp ing.name_len = strlen(refname);
1585 13b2bc37 2022-10-23 stsp ng_err = got_error_fmt(GOT_ERR_REF_BUSY, "%s", reason);
1586 13b2bc37 2022-10-23 stsp ing.reason_len = strlen(ng_err->msg);
1588 13b2bc37 2022-10-23 stsp len = sizeof(ing) + ing.name_len + ing.reason_len;
1589 13b2bc37 2022-10-23 stsp wbuf = imsg_create(&client->iev.ibuf, GOTD_IMSG_REF_UPDATE_NG,
1590 13b2bc37 2022-10-23 stsp PROC_GOTD, gotd.pid, len);
1591 13b2bc37 2022-10-23 stsp if (wbuf == NULL)
1592 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_create REF_UPDATE_NG");
1594 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &ing, sizeof(ing)) == -1)
1595 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE_NG");
1596 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, refname, ing.name_len) == -1)
1597 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE_NG");
1598 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, ng_err->msg, ing.reason_len) == -1)
1599 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE_NG");
1601 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
1602 13b2bc37 2022-10-23 stsp imsg_close(&client->iev.ibuf, wbuf);
1603 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(&client->iev);
1604 13b2bc37 2022-10-23 stsp return NULL;
1607 13b2bc37 2022-10-23 stsp static const struct got_error *
1608 13b2bc37 2022-10-23 stsp install_pack(struct gotd_client *client, const char *repo_path,
1609 13b2bc37 2022-10-23 stsp struct imsg *imsg)
1611 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1612 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_install inst;
1613 13b2bc37 2022-10-23 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
1614 13b2bc37 2022-10-23 stsp size_t datalen;
1615 13b2bc37 2022-10-23 stsp char *packfile_path = NULL, *packidx_path = NULL;
1617 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1618 13b2bc37 2022-10-23 stsp if (datalen != sizeof(inst))
1619 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1620 13b2bc37 2022-10-23 stsp memcpy(&inst, imsg->data, sizeof(inst));
1622 13b2bc37 2022-10-23 stsp if (client->packfile_path == NULL)
1623 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
1624 13b2bc37 2022-10-23 stsp "client has no pack file");
1625 13b2bc37 2022-10-23 stsp if (client->packidx_path == NULL)
1626 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
1627 13b2bc37 2022-10-23 stsp "client has no pack file index");
1629 13b2bc37 2022-10-23 stsp if (got_sha1_digest_to_str(inst.pack_sha1, hex, sizeof(hex)) == NULL)
1630 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_NO_SPACE,
1631 13b2bc37 2022-10-23 stsp "could not convert pack file SHA1 to hex");
1633 13b2bc37 2022-10-23 stsp if (asprintf(&packfile_path, "/%s/%s/pack-%s.pack",
1634 13b2bc37 2022-10-23 stsp repo_path, GOT_OBJECTS_PACK_DIR, hex) == -1) {
1635 13b2bc37 2022-10-23 stsp err = got_error_from_errno("asprintf");
1636 13b2bc37 2022-10-23 stsp goto done;
1639 13b2bc37 2022-10-23 stsp if (asprintf(&packidx_path, "/%s/%s/pack-%s.idx",
1640 13b2bc37 2022-10-23 stsp repo_path, GOT_OBJECTS_PACK_DIR, hex) == -1) {
1641 13b2bc37 2022-10-23 stsp err = got_error_from_errno("asprintf");
1642 13b2bc37 2022-10-23 stsp goto done;
1645 13b2bc37 2022-10-23 stsp if (rename(client->packfile_path, packfile_path) == -1) {
1646 13b2bc37 2022-10-23 stsp err = got_error_from_errno3("rename", client->packfile_path,
1647 13b2bc37 2022-10-23 stsp packfile_path);
1648 13b2bc37 2022-10-23 stsp goto done;
1651 13b2bc37 2022-10-23 stsp free(client->packfile_path);
1652 13b2bc37 2022-10-23 stsp client->packfile_path = NULL;
1654 13b2bc37 2022-10-23 stsp if (rename(client->packidx_path, packidx_path) == -1) {
1655 13b2bc37 2022-10-23 stsp err = got_error_from_errno3("rename", client->packidx_path,
1656 13b2bc37 2022-10-23 stsp packidx_path);
1657 13b2bc37 2022-10-23 stsp goto done;
1660 13b2bc37 2022-10-23 stsp free(client->packidx_path);
1661 13b2bc37 2022-10-23 stsp client->packidx_path = NULL;
1663 13b2bc37 2022-10-23 stsp free(packfile_path);
1664 13b2bc37 2022-10-23 stsp free(packidx_path);
1665 13b2bc37 2022-10-23 stsp return err;
1668 13b2bc37 2022-10-23 stsp static const struct got_error *
1669 13b2bc37 2022-10-23 stsp begin_ref_updates(struct gotd_client *client, struct imsg *imsg)
1671 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_updates_start istart;
1672 13b2bc37 2022-10-23 stsp size_t datalen;
1674 13b2bc37 2022-10-23 stsp if (client->nref_updates != -1)
1675 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1677 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1678 13b2bc37 2022-10-23 stsp if (datalen != sizeof(istart))
1679 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1680 13b2bc37 2022-10-23 stsp memcpy(&istart, imsg->data, sizeof(istart));
1682 13b2bc37 2022-10-23 stsp if (istart.nref_updates <= 0)
1683 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1685 13b2bc37 2022-10-23 stsp client->nref_updates = istart.nref_updates;
1686 13b2bc37 2022-10-23 stsp return NULL;
1689 13b2bc37 2022-10-23 stsp static const struct got_error *
1690 13b2bc37 2022-10-23 stsp update_ref(struct gotd_client *client, const char *repo_path,
1691 13b2bc37 2022-10-23 stsp struct imsg *imsg)
1693 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1694 13b2bc37 2022-10-23 stsp struct got_repository *repo = NULL;
1695 13b2bc37 2022-10-23 stsp struct got_reference *ref = NULL;
1696 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update iref;
1697 13b2bc37 2022-10-23 stsp struct got_object_id old_id, new_id;
1698 13b2bc37 2022-10-23 stsp struct got_object_id *id = NULL;
1699 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
1700 13b2bc37 2022-10-23 stsp char *refname = NULL;
1701 13b2bc37 2022-10-23 stsp size_t datalen;
1702 13b2bc37 2022-10-23 stsp int locked = 0;
1704 13b2bc37 2022-10-23 stsp log_debug("update-ref from uid %d", client->euid);
1706 13b2bc37 2022-10-23 stsp if (client->nref_updates <= 0)
1707 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1709 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1710 13b2bc37 2022-10-23 stsp if (datalen < sizeof(iref))
1711 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1712 13b2bc37 2022-10-23 stsp memcpy(&iref, imsg->data, sizeof(iref));
1713 13b2bc37 2022-10-23 stsp if (datalen != sizeof(iref) + iref.name_len)
1714 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1715 13b2bc37 2022-10-23 stsp refname = malloc(iref.name_len + 1);
1716 13b2bc37 2022-10-23 stsp if (refname == NULL)
1717 13b2bc37 2022-10-23 stsp return got_error_from_errno("malloc");
1718 13b2bc37 2022-10-23 stsp memcpy(refname, imsg->data + sizeof(iref), iref.name_len);
1719 13b2bc37 2022-10-23 stsp refname[iref.name_len] = '\0';
1721 13b2bc37 2022-10-23 stsp log_debug("updating ref %s for uid %d", refname, client->euid);
1723 13b2bc37 2022-10-23 stsp err = got_repo_open(&repo, repo_path, NULL, NULL);
1725 13b2bc37 2022-10-23 stsp goto done;
1727 13b2bc37 2022-10-23 stsp memcpy(old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
1728 13b2bc37 2022-10-23 stsp memcpy(new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
1729 13b2bc37 2022-10-23 stsp err = got_object_open(&obj, repo, &new_id);
1731 13b2bc37 2022-10-23 stsp goto done;
1733 13b2bc37 2022-10-23 stsp if (iref.ref_is_new) {
1734 13b2bc37 2022-10-23 stsp err = got_ref_open(&ref, repo, refname, 0);
1735 13b2bc37 2022-10-23 stsp if (err) {
1736 13b2bc37 2022-10-23 stsp if (err->code != GOT_ERR_NOT_REF)
1737 13b2bc37 2022-10-23 stsp goto done;
1738 13b2bc37 2022-10-23 stsp err = got_ref_alloc(&ref, refname, &new_id);
1740 13b2bc37 2022-10-23 stsp goto done;
1741 13b2bc37 2022-10-23 stsp err = got_ref_write(ref, repo); /* will lock/unlock */
1743 13b2bc37 2022-10-23 stsp goto done;
1745 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_REF_BUSY,
1746 13b2bc37 2022-10-23 stsp "%s has been created by someone else "
1747 13b2bc37 2022-10-23 stsp "while transaction was in progress",
1748 13b2bc37 2022-10-23 stsp got_ref_get_name(ref));
1749 13b2bc37 2022-10-23 stsp goto done;
1752 13b2bc37 2022-10-23 stsp err = got_ref_open(&ref, repo, refname, 1 /* lock */);
1754 13b2bc37 2022-10-23 stsp goto done;
1755 13b2bc37 2022-10-23 stsp locked = 1;
1757 13b2bc37 2022-10-23 stsp err = got_ref_resolve(&id, repo, ref);
1759 13b2bc37 2022-10-23 stsp goto done;
1761 13b2bc37 2022-10-23 stsp if (got_object_id_cmp(id, &old_id) != 0) {
1762 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_REF_BUSY,
1763 13b2bc37 2022-10-23 stsp "%s has been modified by someone else "
1764 13b2bc37 2022-10-23 stsp "while transaction was in progress",
1765 13b2bc37 2022-10-23 stsp got_ref_get_name(ref));
1766 13b2bc37 2022-10-23 stsp goto done;
1769 13b2bc37 2022-10-23 stsp err = got_ref_change_ref(ref, &new_id);
1771 13b2bc37 2022-10-23 stsp goto done;
1773 13b2bc37 2022-10-23 stsp err = got_ref_write(ref, repo);
1775 13b2bc37 2022-10-23 stsp goto done;
1778 13b2bc37 2022-10-23 stsp id = NULL;
1781 13b2bc37 2022-10-23 stsp if (err) {
1782 13b2bc37 2022-10-23 stsp if (err->code == GOT_ERR_LOCKFILE_TIMEOUT) {
1783 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_LOCKFILE_TIMEOUT,
1784 13b2bc37 2022-10-23 stsp "could not acquire exclusive file lock for %s",
1787 13b2bc37 2022-10-23 stsp send_ref_update_ng(client, &iref, refname, err->msg);
1789 13b2bc37 2022-10-23 stsp send_ref_update_ok(client, &iref, refname);
1791 13b2bc37 2022-10-23 stsp if (client->nref_updates > 0) {
1792 13b2bc37 2022-10-23 stsp client->nref_updates--;
1793 13b2bc37 2022-10-23 stsp if (client->nref_updates == 0)
1794 13b2bc37 2022-10-23 stsp send_refs_updated(client);
1797 13b2bc37 2022-10-23 stsp if (locked) {
1798 13b2bc37 2022-10-23 stsp const struct got_error *unlock_err;
1799 13b2bc37 2022-10-23 stsp unlock_err = got_ref_unlock(ref);
1800 13b2bc37 2022-10-23 stsp if (unlock_err && err == NULL)
1801 13b2bc37 2022-10-23 stsp err = unlock_err;
1804 13b2bc37 2022-10-23 stsp got_ref_close(ref);
1806 13b2bc37 2022-10-23 stsp got_object_close(obj);
1808 13b2bc37 2022-10-23 stsp got_repo_close(repo);
1809 13b2bc37 2022-10-23 stsp free(refname);
1811 13b2bc37 2022-10-23 stsp return err;
1814 13b2bc37 2022-10-23 stsp static void
1815 13b2bc37 2022-10-23 stsp gotd_dispatch(int fd, short event, void *arg)
1817 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev = arg;
1818 13b2bc37 2022-10-23 stsp struct imsgbuf *ibuf = &iev->ibuf;
1819 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc = NULL;
1820 13b2bc37 2022-10-23 stsp ssize_t n;
1821 13b2bc37 2022-10-23 stsp int shut = 0;
1822 13b2bc37 2022-10-23 stsp struct imsg imsg;
1824 13b2bc37 2022-10-23 stsp if (event & EV_READ) {
1825 13b2bc37 2022-10-23 stsp if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1826 13b2bc37 2022-10-23 stsp fatal("imsg_read error");
1827 13b2bc37 2022-10-23 stsp if (n == 0) {
1828 13b2bc37 2022-10-23 stsp /* Connection closed. */
1830 13b2bc37 2022-10-23 stsp goto done;
1834 13b2bc37 2022-10-23 stsp if (event & EV_WRITE) {
1835 13b2bc37 2022-10-23 stsp n = msgbuf_write(&ibuf->w);
1836 13b2bc37 2022-10-23 stsp if (n == -1 && errno != EAGAIN)
1837 13b2bc37 2022-10-23 stsp fatal("msgbuf_write");
1838 13b2bc37 2022-10-23 stsp if (n == 0) {
1839 13b2bc37 2022-10-23 stsp /* Connection closed. */
1841 13b2bc37 2022-10-23 stsp goto done;
1845 13b2bc37 2022-10-23 stsp proc = find_proc_by_fd(fd);
1846 13b2bc37 2022-10-23 stsp if (proc == NULL)
1847 13b2bc37 2022-10-23 stsp fatalx("cannot find child process for fd %d", fd);
1849 13b2bc37 2022-10-23 stsp for (;;) {
1850 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1851 13b2bc37 2022-10-23 stsp struct gotd_client *client = NULL;
1852 13b2bc37 2022-10-23 stsp uint32_t client_id = 0;
1853 13b2bc37 2022-10-23 stsp int do_disconnect = 0;
1854 13b2bc37 2022-10-23 stsp int do_ref_updates = 0, do_ref_update = 0;
1855 13b2bc37 2022-10-23 stsp int do_packfile_install = 0;
1857 13b2bc37 2022-10-23 stsp if ((n = imsg_get(ibuf, &imsg)) == -1)
1858 13b2bc37 2022-10-23 stsp fatal("%s: imsg_get error", __func__);
1859 13b2bc37 2022-10-23 stsp if (n == 0) /* No more messages. */
1862 13b2bc37 2022-10-23 stsp switch (imsg.hdr.type) {
1863 13b2bc37 2022-10-23 stsp case GOTD_IMSG_ERROR:
1864 13b2bc37 2022-10-23 stsp do_disconnect = 1;
1865 13b2bc37 2022-10-23 stsp err = gotd_imsg_recv_error(&client_id, &imsg);
1867 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKFILE_DONE:
1868 13b2bc37 2022-10-23 stsp do_disconnect = 1;
1869 13b2bc37 2022-10-23 stsp err = recv_packfile_done(&client_id, &imsg);
1871 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKFILE_INSTALL:
1872 13b2bc37 2022-10-23 stsp err = recv_packfile_install(&client_id, &imsg);
1873 13b2bc37 2022-10-23 stsp if (err == NULL)
1874 13b2bc37 2022-10-23 stsp do_packfile_install = 1;
1876 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATES_START:
1877 13b2bc37 2022-10-23 stsp err = recv_ref_updates_start(&client_id, &imsg);
1878 13b2bc37 2022-10-23 stsp if (err == NULL)
1879 13b2bc37 2022-10-23 stsp do_ref_updates = 1;
1881 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATE:
1882 13b2bc37 2022-10-23 stsp err = recv_ref_update(&client_id, &imsg);
1883 13b2bc37 2022-10-23 stsp if (err == NULL)
1884 13b2bc37 2022-10-23 stsp do_ref_update = 1;
1887 13b2bc37 2022-10-23 stsp log_debug("unexpected imsg %d", imsg.hdr.type);
1891 13b2bc37 2022-10-23 stsp client = find_client(client_id);
1892 13b2bc37 2022-10-23 stsp if (client == NULL) {
1893 13b2bc37 2022-10-23 stsp log_warnx("%s: client not found", __func__);
1894 13b2bc37 2022-10-23 stsp imsg_free(&imsg);
1898 13b2bc37 2022-10-23 stsp if (!verify_imsg_src(client, proc, &imsg)) {
1899 13b2bc37 2022-10-23 stsp log_debug("dropping imsg type %d from PID %d",
1900 13b2bc37 2022-10-23 stsp imsg.hdr.type, proc->pid);
1901 13b2bc37 2022-10-23 stsp imsg_free(&imsg);
1905 13b2bc37 2022-10-23 stsp log_warnx("uid %d: %s", client->euid, err->msg);
1907 13b2bc37 2022-10-23 stsp if (do_disconnect) {
1909 13b2bc37 2022-10-23 stsp disconnect_on_error(client, err);
1911 13b2bc37 2022-10-23 stsp disconnect(client);
1912 13b2bc37 2022-10-23 stsp } else if (do_packfile_install)
1913 13b2bc37 2022-10-23 stsp err = install_pack(client, proc->chroot_path, &imsg);
1914 13b2bc37 2022-10-23 stsp else if (do_ref_updates)
1915 13b2bc37 2022-10-23 stsp err = begin_ref_updates(client, &imsg);
1916 13b2bc37 2022-10-23 stsp else if (do_ref_update)
1917 13b2bc37 2022-10-23 stsp err = update_ref(client, proc->chroot_path, &imsg);
1920 13b2bc37 2022-10-23 stsp log_warnx("uid %d: %s", client->euid, err->msg);
1921 13b2bc37 2022-10-23 stsp imsg_free(&imsg);
1924 13b2bc37 2022-10-23 stsp if (!shut) {
1925 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(iev);
1927 13b2bc37 2022-10-23 stsp /* This pipe is dead. Remove its event handler */
1928 13b2bc37 2022-10-23 stsp event_del(&iev->ev);
1929 13b2bc37 2022-10-23 stsp event_loopexit(NULL);
1933 13b2bc37 2022-10-23 stsp static pid_t
1934 13b2bc37 2022-10-23 stsp start_child(enum gotd_procid proc_id, const char *chroot_path,
1935 585362fd 2022-10-31 op char *argv0, const char *confpath, int fd, int daemonize, int verbosity)
1937 585362fd 2022-10-31 op char *argv[11];
1938 13b2bc37 2022-10-23 stsp int argc = 0;
1939 13b2bc37 2022-10-23 stsp pid_t pid;
1941 13b2bc37 2022-10-23 stsp switch (pid = fork()) {
1943 13b2bc37 2022-10-23 stsp fatal("cannot fork");
1947 13b2bc37 2022-10-23 stsp close(fd);
1948 13b2bc37 2022-10-23 stsp return pid;
1951 13b2bc37 2022-10-23 stsp if (fd != GOTD_SOCK_FILENO) {
1952 13b2bc37 2022-10-23 stsp if (dup2(fd, GOTD_SOCK_FILENO) == -1)
1953 13b2bc37 2022-10-23 stsp fatal("cannot setup imsg fd");
1954 13b2bc37 2022-10-23 stsp } else if (fcntl(fd, F_SETFD, 0) == -1)
1955 13b2bc37 2022-10-23 stsp fatal("cannot setup imsg fd");
1957 13b2bc37 2022-10-23 stsp argv[argc++] = argv0;
1958 13b2bc37 2022-10-23 stsp switch (proc_id) {
1959 13b2bc37 2022-10-23 stsp case PROC_REPO_READ:
1960 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-R";
1962 13b2bc37 2022-10-23 stsp case PROC_REPO_WRITE:
1963 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-W";
1966 13b2bc37 2022-10-23 stsp fatalx("invalid process id %d", proc_id);
1969 585362fd 2022-10-31 op argv[argc++] = (char *)"-f";
1970 585362fd 2022-10-31 op argv[argc++] = (char *)confpath;
1972 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-P";
1973 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)chroot_path;
1975 13b2bc37 2022-10-23 stsp if (!daemonize)
1976 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-d";
1977 13b2bc37 2022-10-23 stsp if (verbosity > 0)
1978 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-v";
1979 13b2bc37 2022-10-23 stsp if (verbosity > 1)
1980 13b2bc37 2022-10-23 stsp argv[argc++] = (char *)"-v";
1981 13b2bc37 2022-10-23 stsp argv[argc++] = NULL;
1983 13b2bc37 2022-10-23 stsp execvp(argv0, argv);
1984 13b2bc37 2022-10-23 stsp fatal("execvp");
1987 13b2bc37 2022-10-23 stsp static void
1988 585362fd 2022-10-31 op start_repo_children(struct gotd *gotd, char *argv0, const char *confpath,
1989 585362fd 2022-10-31 op int daemonize, int verbosity)
1991 13b2bc37 2022-10-23 stsp struct gotd_repo *repo = NULL;
1992 13b2bc37 2022-10-23 stsp struct gotd_child_proc *proc;
1996 13b2bc37 2022-10-23 stsp * XXX For now, use one reader and one writer per repository.
1997 13b2bc37 2022-10-23 stsp * This should be changed to N readers + M writers.
1999 13b2bc37 2022-10-23 stsp gotd->nprocs = gotd->nrepos * 2;
2000 13b2bc37 2022-10-23 stsp gotd->procs = calloc(gotd->nprocs, sizeof(*gotd->procs));
2001 13b2bc37 2022-10-23 stsp if (gotd->procs == NULL)
2002 13b2bc37 2022-10-23 stsp fatal("calloc");
2003 13b2bc37 2022-10-23 stsp for (i = 0; i < gotd->nprocs; i++) {
2004 13b2bc37 2022-10-23 stsp if (repo == NULL)
2005 13b2bc37 2022-10-23 stsp repo = TAILQ_FIRST(&gotd->repos);
2006 13b2bc37 2022-10-23 stsp proc = &gotd->procs[i];
2007 13b2bc37 2022-10-23 stsp if (i < gotd->nrepos)
2008 13b2bc37 2022-10-23 stsp proc->type = PROC_REPO_READ;
2010 13b2bc37 2022-10-23 stsp proc->type = PROC_REPO_WRITE;
2011 13b2bc37 2022-10-23 stsp if (strlcpy(proc->repo_name, repo->name,
2012 13b2bc37 2022-10-23 stsp sizeof(proc->repo_name)) >= sizeof(proc->repo_name))
2013 13b2bc37 2022-10-23 stsp fatalx("repository name too long: %s", repo->name);
2014 13b2bc37 2022-10-23 stsp log_debug("adding repository %s", repo->name);
2015 13b2bc37 2022-10-23 stsp if (realpath(repo->path, proc->chroot_path) == NULL)
2016 13b2bc37 2022-10-23 stsp fatal("%s", repo->path);
2017 13b2bc37 2022-10-23 stsp if (socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK,
2018 13b2bc37 2022-10-23 stsp PF_UNSPEC, proc->pipe) == -1)
2019 13b2bc37 2022-10-23 stsp fatal("socketpair");
2020 13b2bc37 2022-10-23 stsp proc->pid = start_child(proc->type, proc->chroot_path, argv0,
2021 585362fd 2022-10-31 op confpath, proc->pipe[1], daemonize, verbosity);
2022 13b2bc37 2022-10-23 stsp imsg_init(&proc->iev.ibuf, proc->pipe[0]);
2023 13b2bc37 2022-10-23 stsp log_debug("proc %s %s is on fd %d",
2024 13b2bc37 2022-10-23 stsp gotd_proc_names[proc->type], proc->chroot_path,
2025 13b2bc37 2022-10-23 stsp proc->pipe[0]);
2026 13b2bc37 2022-10-23 stsp proc->iev.handler = gotd_dispatch;
2027 13b2bc37 2022-10-23 stsp proc->iev.events = EV_READ;
2028 13b2bc37 2022-10-23 stsp proc->iev.handler_arg = NULL;
2029 13b2bc37 2022-10-23 stsp event_set(&proc->iev.ev, proc->iev.ibuf.fd, EV_READ,
2030 13b2bc37 2022-10-23 stsp gotd_dispatch, &proc->iev);
2032 13b2bc37 2022-10-23 stsp repo = TAILQ_NEXT(repo, entry);
2036 13b2bc37 2022-10-23 stsp static void
2037 13b2bc37 2022-10-23 stsp apply_unveil(void)
2039 13b2bc37 2022-10-23 stsp struct gotd_repo *repo;
2041 13b2bc37 2022-10-23 stsp TAILQ_FOREACH(repo, &gotd.repos, entry) {
2042 13b2bc37 2022-10-23 stsp if (unveil(repo->path, "rwc") == -1)
2043 13b2bc37 2022-10-23 stsp fatal("unveil %s", repo->path);
2046 13b2bc37 2022-10-23 stsp if (unveil(GOT_TMPDIR_STR, "rwc") == -1)
2047 13b2bc37 2022-10-23 stsp fatal("unveil %s", GOT_TMPDIR_STR);
2049 13b2bc37 2022-10-23 stsp if (unveil(NULL, NULL) == -1)
2050 13b2bc37 2022-10-23 stsp fatal("unveil");
2054 13b2bc37 2022-10-23 stsp main(int argc, char **argv)
2056 13b2bc37 2022-10-23 stsp const struct got_error *error = NULL;
2057 13b2bc37 2022-10-23 stsp int ch, fd = -1, daemonize = 1, verbosity = 0, noaction = 0;
2058 13b2bc37 2022-10-23 stsp const char *confpath = GOTD_CONF_PATH;
2059 13b2bc37 2022-10-23 stsp char *argv0 = argv[0];
2060 13b2bc37 2022-10-23 stsp char title[2048];
2061 13b2bc37 2022-10-23 stsp gid_t groups[NGROUPS_MAX + 1];
2062 13b2bc37 2022-10-23 stsp int ngroups = NGROUPS_MAX + 1;
2063 13b2bc37 2022-10-23 stsp struct passwd *pw = NULL;
2064 13b2bc37 2022-10-23 stsp struct group *gr = NULL;
2065 13b2bc37 2022-10-23 stsp char *repo_path = NULL;
2066 13b2bc37 2022-10-23 stsp enum gotd_procid proc_id = PROC_GOTD;
2067 13b2bc37 2022-10-23 stsp struct event evsigint, evsigterm, evsighup, evsigusr1;
2068 13b2bc37 2022-10-23 stsp int *pack_fds = NULL, *temp_fds = NULL;
2070 13b2bc37 2022-10-23 stsp log_init(1, LOG_DAEMON); /* Log to stderr until daemonized. */
2072 6f319063 2022-10-27 stsp while ((ch = getopt(argc, argv, "df:nP:RvW")) != -1) {
2073 13b2bc37 2022-10-23 stsp switch (ch) {
2075 13b2bc37 2022-10-23 stsp daemonize = 0;
2078 13b2bc37 2022-10-23 stsp confpath = optarg;
2081 13b2bc37 2022-10-23 stsp noaction = 1;
2084 6f319063 2022-10-27 stsp repo_path = realpath(optarg, NULL);
2085 6f319063 2022-10-27 stsp if (repo_path == NULL)
2086 6f319063 2022-10-27 stsp fatal("realpath '%s'", optarg);
2089 13b2bc37 2022-10-23 stsp proc_id = PROC_REPO_READ;
2092 6f319063 2022-10-27 stsp if (verbosity < 3)
2093 6f319063 2022-10-27 stsp verbosity++;
2096 13b2bc37 2022-10-23 stsp proc_id = PROC_REPO_WRITE;
2103 13b2bc37 2022-10-23 stsp argc -= optind;
2104 13b2bc37 2022-10-23 stsp argv += optind;
2106 13b2bc37 2022-10-23 stsp if (argc != 0)
2109 13b2bc37 2022-10-23 stsp if (geteuid())
2110 13b2bc37 2022-10-23 stsp fatalx("need root privileges");
2112 13b2bc37 2022-10-23 stsp log_init(daemonize ? 0 : 1, LOG_DAEMON);
2113 13b2bc37 2022-10-23 stsp log_setverbose(verbosity);
2115 13b2bc37 2022-10-23 stsp if (parse_config(confpath, proc_id, &gotd) != 0)
2118 13b2bc37 2022-10-23 stsp if (proc_id == PROC_GOTD &&
2119 13b2bc37 2022-10-23 stsp (gotd.nrepos == 0 || TAILQ_EMPTY(&gotd.repos)))
2120 13b2bc37 2022-10-23 stsp fatalx("no repository defined in configuration file");
2122 13b2bc37 2022-10-23 stsp pw = getpwnam(gotd.user_name);
2123 13b2bc37 2022-10-23 stsp if (pw == NULL)
2124 13b2bc37 2022-10-23 stsp fatal("getpwuid: user %s not found", gotd.user_name);
2126 13b2bc37 2022-10-23 stsp if (pw->pw_uid == 0) {
2127 13b2bc37 2022-10-23 stsp fatalx("cannot run %s as %s: the user running %s "
2128 13b2bc37 2022-10-23 stsp "must not be the superuser",
2129 13b2bc37 2022-10-23 stsp getprogname(), pw->pw_name, getprogname());
2132 13b2bc37 2022-10-23 stsp if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups) == -1)
2133 13b2bc37 2022-10-23 stsp log_warnx("group membership list truncated");
2135 13b2bc37 2022-10-23 stsp gr = match_group(groups, ngroups, gotd.unix_group_name);
2136 13b2bc37 2022-10-23 stsp if (gr == NULL) {
2137 13b2bc37 2022-10-23 stsp fatalx("cannot start %s: the user running %s "
2138 13b2bc37 2022-10-23 stsp "must be a secondary member of group %s",
2139 13b2bc37 2022-10-23 stsp getprogname(), getprogname(), gotd.unix_group_name);
2141 13b2bc37 2022-10-23 stsp if (gr->gr_gid == pw->pw_gid) {
2142 13b2bc37 2022-10-23 stsp fatalx("cannot start %s: the user running %s "
2143 13b2bc37 2022-10-23 stsp "must be a secondary member of group %s, but "
2144 13b2bc37 2022-10-23 stsp "%s is the user's primary group",
2145 13b2bc37 2022-10-23 stsp getprogname(), getprogname(), gotd.unix_group_name,
2146 13b2bc37 2022-10-23 stsp gotd.unix_group_name);
2149 13b2bc37 2022-10-23 stsp if (proc_id == PROC_GOTD &&
2150 13b2bc37 2022-10-23 stsp !got_path_is_absolute(gotd.unix_socket_path))
2151 13b2bc37 2022-10-23 stsp fatalx("bad unix socket path \"%s\": must be an absolute path",
2152 13b2bc37 2022-10-23 stsp gotd.unix_socket_path);
2154 13b2bc37 2022-10-23 stsp if (noaction)
2157 13b2bc37 2022-10-23 stsp if (proc_id == PROC_GOTD && verbosity) {
2158 13b2bc37 2022-10-23 stsp log_info("socket: %s", gotd.unix_socket_path);
2159 13b2bc37 2022-10-23 stsp log_info("user: %s", pw->pw_name);
2160 13b2bc37 2022-10-23 stsp log_info("secondary group: %s", gr->gr_name);
2162 13b2bc37 2022-10-23 stsp fd = unix_socket_listen(gotd.unix_socket_path, pw->pw_uid,
2163 13b2bc37 2022-10-23 stsp gr->gr_gid);
2164 13b2bc37 2022-10-23 stsp if (fd == -1) {
2165 13b2bc37 2022-10-23 stsp fatal("cannot listen on unix socket %s",
2166 13b2bc37 2022-10-23 stsp gotd.unix_socket_path);
2170 13b2bc37 2022-10-23 stsp if (proc_id == PROC_GOTD) {
2171 13b2bc37 2022-10-23 stsp gotd.pid = getpid();
2172 13b2bc37 2022-10-23 stsp snprintf(title, sizeof(title), "%s", gotd_proc_names[proc_id]);
2173 585362fd 2022-10-31 op start_repo_children(&gotd, argv0, confpath, daemonize,
2175 13b2bc37 2022-10-23 stsp arc4random_buf(&clients_hash_key, sizeof(clients_hash_key));
2176 13b2bc37 2022-10-23 stsp if (daemonize && daemon(0, 0) == -1)
2177 13b2bc37 2022-10-23 stsp fatal("daemon");
2178 13b2bc37 2022-10-23 stsp } else if (proc_id == PROC_REPO_READ || proc_id == PROC_REPO_WRITE) {
2179 13b2bc37 2022-10-23 stsp error = got_repo_pack_fds_open(&pack_fds);
2180 13b2bc37 2022-10-23 stsp if (error != NULL)
2181 13b2bc37 2022-10-23 stsp fatalx("cannot open pack tempfiles: %s", error->msg);
2182 13b2bc37 2022-10-23 stsp error = got_repo_temp_fds_open(&temp_fds);
2183 13b2bc37 2022-10-23 stsp if (error != NULL)
2184 13b2bc37 2022-10-23 stsp fatalx("cannot open pack tempfiles: %s", error->msg);
2185 13b2bc37 2022-10-23 stsp if (repo_path == NULL)
2186 13b2bc37 2022-10-23 stsp fatalx("repository path not specified");
2187 13b2bc37 2022-10-23 stsp snprintf(title, sizeof(title), "%s %s",
2188 13b2bc37 2022-10-23 stsp gotd_proc_names[proc_id], repo_path);
2189 13b2bc37 2022-10-23 stsp if (chroot(repo_path) == -1)
2190 13b2bc37 2022-10-23 stsp fatal("chroot");
2191 13b2bc37 2022-10-23 stsp if (chdir("/") == -1)
2192 13b2bc37 2022-10-23 stsp fatal("chdir(\"/\")");
2193 13b2bc37 2022-10-23 stsp if (daemonize && daemon(1, 0) == -1)
2194 13b2bc37 2022-10-23 stsp fatal("daemon");
2196 13b2bc37 2022-10-23 stsp fatal("invalid process id %d", proc_id);
2198 13b2bc37 2022-10-23 stsp setproctitle("%s", title);
2199 13b2bc37 2022-10-23 stsp log_procinit(title);
2201 13b2bc37 2022-10-23 stsp /* Drop root privileges. */
2202 13b2bc37 2022-10-23 stsp if (setgid(pw->pw_gid) == -1)
2203 13b2bc37 2022-10-23 stsp fatal("setgid %d failed", pw->pw_gid);
2204 13b2bc37 2022-10-23 stsp if (setuid(pw->pw_uid) == -1)
2205 13b2bc37 2022-10-23 stsp fatal("setuid %d failed", pw->pw_uid);
2207 13b2bc37 2022-10-23 stsp event_init();
2209 13b2bc37 2022-10-23 stsp switch (proc_id) {
2210 13b2bc37 2022-10-23 stsp case PROC_GOTD:
2211 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2212 13b2bc37 2022-10-23 stsp if (pledge("stdio rpath wpath cpath proc getpw sendfd recvfd "
2213 13b2bc37 2022-10-23 stsp "fattr flock unix unveil", NULL) == -1)
2214 13b2bc37 2022-10-23 stsp err(1, "pledge");
2217 13b2bc37 2022-10-23 stsp case PROC_REPO_READ:
2218 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2219 86769de8 2022-10-28 stsp if (pledge("stdio rpath recvfd", NULL) == -1)
2220 13b2bc37 2022-10-23 stsp err(1, "pledge");
2222 13b2bc37 2022-10-23 stsp repo_read_main(title, pack_fds, temp_fds);
2223 13b2bc37 2022-10-23 stsp /* NOTREACHED */
2225 13b2bc37 2022-10-23 stsp case PROC_REPO_WRITE:
2226 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2227 7fec5f4a 2022-10-28 stsp if (pledge("stdio rpath recvfd", NULL) == -1)
2228 13b2bc37 2022-10-23 stsp err(1, "pledge");
2230 13b2bc37 2022-10-23 stsp repo_write_main(title, pack_fds, temp_fds);
2231 13b2bc37 2022-10-23 stsp /* NOTREACHED */
2234 13b2bc37 2022-10-23 stsp fatal("invalid process id %d", proc_id);
2237 13b2bc37 2022-10-23 stsp if (proc_id != PROC_GOTD)
2238 13b2bc37 2022-10-23 stsp fatal("invalid process id %d", proc_id);
2240 13b2bc37 2022-10-23 stsp apply_unveil();
2242 13b2bc37 2022-10-23 stsp signal_set(&evsigint, SIGINT, gotd_sighdlr, NULL);
2243 13b2bc37 2022-10-23 stsp signal_set(&evsigterm, SIGTERM, gotd_sighdlr, NULL);
2244 13b2bc37 2022-10-23 stsp signal_set(&evsighup, SIGHUP, gotd_sighdlr, NULL);
2245 13b2bc37 2022-10-23 stsp signal_set(&evsigusr1, SIGUSR1, gotd_sighdlr, NULL);
2246 13b2bc37 2022-10-23 stsp signal(SIGPIPE, SIG_IGN);
2248 13b2bc37 2022-10-23 stsp signal_add(&evsigint, NULL);
2249 13b2bc37 2022-10-23 stsp signal_add(&evsigterm, NULL);
2250 13b2bc37 2022-10-23 stsp signal_add(&evsighup, NULL);
2251 13b2bc37 2022-10-23 stsp signal_add(&evsigusr1, NULL);
2253 13b2bc37 2022-10-23 stsp event_set(&gotd.ev, fd, EV_READ | EV_PERSIST, gotd_accept, NULL);
2254 13b2bc37 2022-10-23 stsp if (event_add(&gotd.ev, NULL))
2255 13b2bc37 2022-10-23 stsp fatalx("event add");
2256 13b2bc37 2022-10-23 stsp evtimer_set(&gotd.pause, gotd_accept_paused, NULL);
2258 13b2bc37 2022-10-23 stsp event_dispatch();
2260 13b2bc37 2022-10-23 stsp if (fd != -1)
2261 13b2bc37 2022-10-23 stsp close(fd);
2262 13b2bc37 2022-10-23 stsp if (pack_fds)
2263 13b2bc37 2022-10-23 stsp got_repo_pack_fds_close(pack_fds);
2264 13b2bc37 2022-10-23 stsp free(repo_path);
