2 3efd8e31 2022-10-23 thomas * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 3efd8e31 2022-10-23 thomas * Permission to use, copy, modify, and distribute this software for any
5 3efd8e31 2022-10-23 thomas * purpose with or without fee is hereby granted, provided that the above
6 3efd8e31 2022-10-23 thomas * copyright notice and this permission notice appear in all copies.
8 3efd8e31 2022-10-23 thomas * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 3efd8e31 2022-10-23 thomas * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 3efd8e31 2022-10-23 thomas * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 3efd8e31 2022-10-23 thomas * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 3efd8e31 2022-10-23 thomas * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 3efd8e31 2022-10-23 thomas * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 3efd8e31 2022-10-23 thomas * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 4efc8dcb 2023-08-29 thomas #include "got_compat.h"
19 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
20 3efd8e31 2022-10-23 thomas #include <sys/time.h>
21 3efd8e31 2022-10-23 thomas #include <sys/types.h>
22 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
23 3efd8e31 2022-10-23 thomas #include <sys/socket.h>
24 3efd8e31 2022-10-23 thomas #include <sys/un.h>
25 3efd8e31 2022-10-23 thomas #include <sys/wait.h>
26 fec75208 2023-11-16 thomas #include <sys/resource.h>
28 3efd8e31 2022-10-23 thomas #include <fcntl.h>
29 3efd8e31 2022-10-23 thomas #include <err.h>
30 3efd8e31 2022-10-23 thomas #include <errno.h>
31 3efd8e31 2022-10-23 thomas #include <event.h>
32 3efd8e31 2022-10-23 thomas #include <limits.h>
33 3efd8e31 2022-10-23 thomas #include <pwd.h>
34 3efd8e31 2022-10-23 thomas #include <imsg.h>
35 3efd8e31 2022-10-23 thomas #include <signal.h>
36 3efd8e31 2022-10-23 thomas #include <stdarg.h>
37 3efd8e31 2022-10-23 thomas #include <stdio.h>
38 3efd8e31 2022-10-23 thomas #include <stdlib.h>
39 3efd8e31 2022-10-23 thomas #include <string.h>
40 3efd8e31 2022-10-23 thomas #include <syslog.h>
41 3efd8e31 2022-10-23 thomas #include <unistd.h>
43 3efd8e31 2022-10-23 thomas #include "got_error.h"
44 3efd8e31 2022-10-23 thomas #include "got_opentemp.h"
45 3efd8e31 2022-10-23 thomas #include "got_path.h"
46 3efd8e31 2022-10-23 thomas #include "got_repository.h"
47 3efd8e31 2022-10-23 thomas #include "got_object.h"
48 3efd8e31 2022-10-23 thomas #include "got_reference.h"
50 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
51 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
52 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
53 be288a59 2023-02-23 thomas #include "got_lib_hash.h"
54 3efd8e31 2022-10-23 thomas #include "got_lib_gitproto.h"
55 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
56 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
58 3efd8e31 2022-10-23 thomas #include "gotd.h"
59 3efd8e31 2022-10-23 thomas #include "log.h"
60 2b3d32a1 2022-12-30 thomas #include "listen.h"
61 729a7e24 2022-11-17 thomas #include "auth.h"
62 62ee7d94 2023-01-10 thomas #include "session.h"
63 3efd8e31 2022-10-23 thomas #include "repo_read.h"
64 3efd8e31 2022-10-23 thomas #include "repo_write.h"
66 3efd8e31 2022-10-23 thomas #ifndef nitems
67 3efd8e31 2022-10-23 thomas #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
70 7b1db75e 2023-01-14 thomas enum gotd_client_state {
71 7b1db75e 2023-01-14 thomas GOTD_CLIENT_STATE_NEW,
72 7b1db75e 2023-01-14 thomas GOTD_CLIENT_STATE_ACCESS_GRANTED,
75 78943464 2023-06-22 thomas struct gotd_child_proc {
76 78943464 2023-06-22 thomas pid_t pid;
77 78943464 2023-06-22 thomas enum gotd_procid type;
78 78943464 2023-06-22 thomas char repo_name[NAME_MAX];
79 78943464 2023-06-22 thomas char repo_path[PATH_MAX];
80 78943464 2023-06-22 thomas int pipe[2];
81 78943464 2023-06-22 thomas struct gotd_imsgev iev;
82 2c8fb90b 2023-06-25 thomas struct event tmo;
84 2c8fb90b 2023-06-25 thomas TAILQ_ENTRY(gotd_child_proc) entry;
86 2c8fb90b 2023-06-25 thomas TAILQ_HEAD(gotd_procs, gotd_child_proc) procs;
88 3efd8e31 2022-10-23 thomas struct gotd_client {
89 3efd8e31 2022-10-23 thomas STAILQ_ENTRY(gotd_client) entry;
90 3efd8e31 2022-10-23 thomas enum gotd_client_state state;
91 3efd8e31 2022-10-23 thomas uint32_t id;
93 3efd8e31 2022-10-23 thomas struct gotd_imsgev iev;
94 3efd8e31 2022-10-23 thomas struct event tmo;
95 3efd8e31 2022-10-23 thomas uid_t euid;
96 3efd8e31 2022-10-23 thomas gid_t egid;
97 27b11d77 2023-01-14 thomas struct gotd_child_proc *repo;
98 c669c489 2022-12-30 thomas struct gotd_child_proc *auth;
99 62ee7d94 2023-01-10 thomas struct gotd_child_proc *session;
100 c669c489 2022-12-30 thomas int required_auth;
102 3efd8e31 2022-10-23 thomas STAILQ_HEAD(gotd_clients, gotd_client);
104 3efd8e31 2022-10-23 thomas static struct gotd_clients gotd_clients[GOTD_CLIENT_TABLE_SIZE];
105 3efd8e31 2022-10-23 thomas static SIPHASH_KEY clients_hash_key;
106 3efd8e31 2022-10-23 thomas volatile int client_cnt;
107 95ef3f8a 2022-12-30 thomas static struct timeval auth_timeout = { 5, 0 };
108 3efd8e31 2022-10-23 thomas static struct gotd gotd;
110 3efd8e31 2022-10-23 thomas void gotd_sighdlr(int sig, short event, void *arg);
111 c902213d 2022-10-29 thomas static void gotd_shutdown(void);
112 62ee7d94 2023-01-10 thomas static const struct got_error *start_session_child(struct gotd_client *,
113 62ee7d94 2023-01-10 thomas struct gotd_repo *, char *, const char *, int, int);
114 85b37c72 2022-12-30 thomas static const struct got_error *start_repo_child(struct gotd_client *,
115 85b37c72 2022-12-30 thomas enum gotd_procid, struct gotd_repo *, char *, const char *, int, int);
116 c669c489 2022-12-30 thomas static const struct got_error *start_auth_child(struct gotd_client *, int,
117 c669c489 2022-12-30 thomas struct gotd_repo *, char *, const char *, int, int);
118 85b37c72 2022-12-30 thomas static void kill_proc(struct gotd_child_proc *, int);
119 2c8fb90b 2023-06-25 thomas static void disconnect(struct gotd_client *);
120 1636f5f1 2023-08-29 thomas static void drop_privs(struct passwd *);
122 3efd8e31 2022-10-23 thomas __dead static void
123 96d694ac 2023-02-17 thomas usage(void)
125 c855c9f0 2023-01-19 thomas fprintf(stderr, "usage: %s [-dnv] [-f config-file]\n", getprogname());
129 14b59d10 2023-11-16 thomas static void
130 14b59d10 2023-11-16 thomas drop_privs(struct passwd *pw)
132 14b59d10 2023-11-16 thomas /* Drop root privileges. */
133 14b59d10 2023-11-16 thomas if (setgid(pw->pw_gid) == -1)
134 14b59d10 2023-11-16 thomas fatal("setgid %d failed", pw->pw_gid);
135 14b59d10 2023-11-16 thomas if (setuid(pw->pw_uid) == -1)
136 14b59d10 2023-11-16 thomas fatal("setuid %d failed", pw->pw_uid);
139 3efd8e31 2022-10-23 thomas static int
140 3efd8e31 2022-10-23 thomas unix_socket_listen(const char *unix_socket_path, uid_t uid, gid_t gid)
142 3efd8e31 2022-10-23 thomas struct sockaddr_un sun;
143 3efd8e31 2022-10-23 thomas int fd = -1;
144 3efd8e31 2022-10-23 thomas mode_t old_umask, mode;
145 2f1efc18 2023-08-29 thomas int sock_flags = SOCK_STREAM | SOCK_NONBLOCK;
147 2f1efc18 2023-08-29 thomas #ifdef SOCK_CLOEXEC
148 2f1efc18 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
151 2f1efc18 2023-08-29 thomas fd = socket(AF_UNIX, sock_flags, 0);
152 3efd8e31 2022-10-23 thomas if (fd == -1) {
153 3efd8e31 2022-10-23 thomas log_warn("socket");
154 3efd8e31 2022-10-23 thomas return -1;
157 3efd8e31 2022-10-23 thomas sun.sun_family = AF_UNIX;
158 3efd8e31 2022-10-23 thomas if (strlcpy(sun.sun_path, unix_socket_path,
159 3efd8e31 2022-10-23 thomas sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
160 3efd8e31 2022-10-23 thomas log_warnx("%s: name too long", unix_socket_path);
161 3efd8e31 2022-10-23 thomas close(fd);
162 3efd8e31 2022-10-23 thomas return -1;
165 3efd8e31 2022-10-23 thomas if (unlink(unix_socket_path) == -1) {
166 3efd8e31 2022-10-23 thomas if (errno != ENOENT) {
167 3efd8e31 2022-10-23 thomas log_warn("unlink %s", unix_socket_path);
168 3efd8e31 2022-10-23 thomas close(fd);
169 3efd8e31 2022-10-23 thomas return -1;
173 3efd8e31 2022-10-23 thomas old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
174 f2fc8ce0 2023-01-06 thomas mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
176 3efd8e31 2022-10-23 thomas if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
177 3efd8e31 2022-10-23 thomas log_warn("bind: %s", unix_socket_path);
178 3efd8e31 2022-10-23 thomas close(fd);
179 3efd8e31 2022-10-23 thomas umask(old_umask);
180 3efd8e31 2022-10-23 thomas return -1;
183 3efd8e31 2022-10-23 thomas umask(old_umask);
185 3efd8e31 2022-10-23 thomas if (chmod(unix_socket_path, mode) == -1) {
186 3efd8e31 2022-10-23 thomas log_warn("chmod %o %s", mode, unix_socket_path);
187 3efd8e31 2022-10-23 thomas close(fd);
188 3efd8e31 2022-10-23 thomas unlink(unix_socket_path);
189 3efd8e31 2022-10-23 thomas return -1;
192 3efd8e31 2022-10-23 thomas if (chown(unix_socket_path, uid, gid) == -1) {
193 3efd8e31 2022-10-23 thomas log_warn("chown %s uid=%d gid=%d", unix_socket_path, uid, gid);
194 3efd8e31 2022-10-23 thomas close(fd);
195 3efd8e31 2022-10-23 thomas unlink(unix_socket_path);
196 3efd8e31 2022-10-23 thomas return -1;
199 3efd8e31 2022-10-23 thomas if (listen(fd, GOTD_UNIX_SOCKET_BACKLOG) == -1) {
200 3efd8e31 2022-10-23 thomas log_warn("listen");
201 3efd8e31 2022-10-23 thomas close(fd);
202 3efd8e31 2022-10-23 thomas unlink(unix_socket_path);
203 3efd8e31 2022-10-23 thomas return -1;
206 3efd8e31 2022-10-23 thomas return fd;
209 3efd8e31 2022-10-23 thomas static uint64_t
210 3efd8e31 2022-10-23 thomas client_hash(uint32_t client_id)
212 3efd8e31 2022-10-23 thomas return SipHash24(&clients_hash_key, &client_id, sizeof(client_id));
215 3efd8e31 2022-10-23 thomas static void
216 3efd8e31 2022-10-23 thomas add_client(struct gotd_client *client)
218 3efd8e31 2022-10-23 thomas uint64_t slot = client_hash(client->id) % nitems(gotd_clients);
219 3efd8e31 2022-10-23 thomas STAILQ_INSERT_HEAD(&gotd_clients[slot], client, entry);
220 3efd8e31 2022-10-23 thomas client_cnt++;
223 3efd8e31 2022-10-23 thomas static struct gotd_client *
224 3efd8e31 2022-10-23 thomas find_client(uint32_t client_id)
226 3efd8e31 2022-10-23 thomas uint64_t slot;
227 3efd8e31 2022-10-23 thomas struct gotd_client *c;
229 3efd8e31 2022-10-23 thomas slot = client_hash(client_id) % nitems(gotd_clients);
230 3efd8e31 2022-10-23 thomas STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
231 3efd8e31 2022-10-23 thomas if (c->id == client_id)
232 3efd8e31 2022-10-23 thomas return c;
235 3efd8e31 2022-10-23 thomas return NULL;
238 85b37c72 2022-12-30 thomas static struct gotd_client *
239 85b37c72 2022-12-30 thomas find_client_by_proc_fd(int fd)
241 85b37c72 2022-12-30 thomas uint64_t slot;
243 85b37c72 2022-12-30 thomas for (slot = 0; slot < nitems(gotd_clients); slot++) {
244 85b37c72 2022-12-30 thomas struct gotd_client *c;
246 85b37c72 2022-12-30 thomas STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
247 27b11d77 2023-01-14 thomas if (c->repo && c->repo->iev.ibuf.fd == fd)
248 85b37c72 2022-12-30 thomas return c;
249 c669c489 2022-12-30 thomas if (c->auth && c->auth->iev.ibuf.fd == fd)
250 62ee7d94 2023-01-10 thomas return c;
251 62ee7d94 2023-01-10 thomas if (c->session && c->session->iev.ibuf.fd == fd)
252 c669c489 2022-12-30 thomas return c;
256 3efd8e31 2022-10-23 thomas return NULL;
259 3efd8e31 2022-10-23 thomas static int
260 3efd8e31 2022-10-23 thomas client_is_reading(struct gotd_client *client)
262 27b11d77 2023-01-14 thomas return (client->required_auth &
263 27b11d77 2023-01-14 thomas (GOTD_AUTH_READ | GOTD_AUTH_WRITE)) == GOTD_AUTH_READ;
266 3efd8e31 2022-10-23 thomas static int
267 3efd8e31 2022-10-23 thomas client_is_writing(struct gotd_client *client)
269 27b11d77 2023-01-14 thomas return (client->required_auth &
270 27b11d77 2023-01-14 thomas (GOTD_AUTH_READ | GOTD_AUTH_WRITE)) ==
271 27b11d77 2023-01-14 thomas (GOTD_AUTH_READ | GOTD_AUTH_WRITE);
274 3efd8e31 2022-10-23 thomas static const struct got_error *
275 3efd8e31 2022-10-23 thomas ensure_client_is_not_writing(struct gotd_client *client)
277 3efd8e31 2022-10-23 thomas if (client_is_writing(client)) {
278 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_PACKET,
279 3efd8e31 2022-10-23 thomas "uid %d made a read-request but is writing to "
280 3efd8e31 2022-10-23 thomas "a repository", client->euid);
283 3efd8e31 2022-10-23 thomas return NULL;
286 3efd8e31 2022-10-23 thomas static const struct got_error *
287 3efd8e31 2022-10-23 thomas ensure_client_is_not_reading(struct gotd_client *client)
289 3efd8e31 2022-10-23 thomas if (client_is_reading(client)) {
290 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_PACKET,
291 3efd8e31 2022-10-23 thomas "uid %d made a write-request but is reading from "
292 3efd8e31 2022-10-23 thomas "a repository", client->euid);
295 3efd8e31 2022-10-23 thomas return NULL;
298 85b37c72 2022-12-30 thomas static void
299 2c8fb90b 2023-06-25 thomas proc_done(struct gotd_child_proc *proc)
301 2c8fb90b 2023-06-25 thomas struct gotd_client *client;
303 2c8fb90b 2023-06-25 thomas TAILQ_REMOVE(&procs, proc, entry);
305 2c8fb90b 2023-06-25 thomas client = find_client_by_proc_fd(proc->iev.ibuf.fd);
306 2c8fb90b 2023-06-25 thomas if (client != NULL) {
307 2c8fb90b 2023-06-25 thomas if (proc == client->repo)
308 2c8fb90b 2023-06-25 thomas client->repo = NULL;
309 2c8fb90b 2023-06-25 thomas if (proc == client->auth)
310 2c8fb90b 2023-06-25 thomas client->auth = NULL;
311 2c8fb90b 2023-06-25 thomas if (proc == client->session)
312 2c8fb90b 2023-06-25 thomas client->session = NULL;
313 2c8fb90b 2023-06-25 thomas disconnect(client);
316 2c8fb90b 2023-06-25 thomas evtimer_del(&proc->tmo);
318 2c8fb90b 2023-06-25 thomas if (proc->iev.ibuf.fd != -1) {
319 2c8fb90b 2023-06-25 thomas event_del(&proc->iev.ev);
320 2c8fb90b 2023-06-25 thomas msgbuf_clear(&proc->iev.ibuf.w);
321 2c8fb90b 2023-06-25 thomas close(proc->iev.ibuf.fd);
324 62ee7d94 2023-01-10 thomas free(proc);
327 b993e8cc 2023-06-22 thomas static void
328 b993e8cc 2023-06-22 thomas kill_repo_proc(struct gotd_client *client)
330 b993e8cc 2023-06-22 thomas if (client->repo == NULL)
333 2c8fb90b 2023-06-25 thomas kill_proc(client->repo, 0);
334 b993e8cc 2023-06-22 thomas client->repo = NULL;
337 3efd8e31 2022-10-23 thomas static void
338 c669c489 2022-12-30 thomas kill_auth_proc(struct gotd_client *client)
340 c669c489 2022-12-30 thomas if (client->auth == NULL)
343 2c8fb90b 2023-06-25 thomas kill_proc(client->auth, 0);
344 c669c489 2022-12-30 thomas client->auth = NULL;
347 c669c489 2022-12-30 thomas static void
348 62ee7d94 2023-01-10 thomas kill_session_proc(struct gotd_client *client)
350 62ee7d94 2023-01-10 thomas if (client->session == NULL)
353 2c8fb90b 2023-06-25 thomas kill_proc(client->session, 0);
354 62ee7d94 2023-01-10 thomas client->session = NULL;
357 62ee7d94 2023-01-10 thomas static void
358 3efd8e31 2022-10-23 thomas disconnect(struct gotd_client *client)
360 3efd8e31 2022-10-23 thomas struct gotd_imsg_disconnect idisconnect;
361 78943464 2023-06-22 thomas struct gotd_child_proc *listen_proc = gotd.listen_proc;
362 3efd8e31 2022-10-23 thomas uint64_t slot;
364 3efd8e31 2022-10-23 thomas log_debug("uid %d: disconnecting", client->euid);
366 c669c489 2022-12-30 thomas kill_auth_proc(client);
367 62ee7d94 2023-01-10 thomas kill_session_proc(client);
368 b993e8cc 2023-06-22 thomas kill_repo_proc(client);
370 52939b68 2023-02-17 thomas idisconnect.client_id = client->id;
371 2b3d32a1 2022-12-30 thomas if (gotd_imsg_compose_event(&listen_proc->iev,
372 2b3d32a1 2022-12-30 thomas GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
373 2b3d32a1 2022-12-30 thomas &idisconnect, sizeof(idisconnect)) == -1)
374 2b3d32a1 2022-12-30 thomas log_warn("imsg compose DISCONNECT");
376 3efd8e31 2022-10-23 thomas slot = client_hash(client->id) % nitems(gotd_clients);
377 3efd8e31 2022-10-23 thomas STAILQ_REMOVE(&gotd_clients[slot], client, gotd_client, entry);
378 3efd8e31 2022-10-23 thomas imsg_clear(&client->iev.ibuf);
379 3efd8e31 2022-10-23 thomas event_del(&client->iev.ev);
380 3efd8e31 2022-10-23 thomas evtimer_del(&client->tmo);
381 62ee7d94 2023-01-10 thomas if (client->fd != -1)
382 62ee7d94 2023-01-10 thomas close(client->fd);
383 62ee7d94 2023-01-10 thomas else if (client->iev.ibuf.fd != -1)
384 62ee7d94 2023-01-10 thomas close(client->iev.ibuf.fd);
385 3efd8e31 2022-10-23 thomas free(client);
386 3efd8e31 2022-10-23 thomas client_cnt--;
389 3efd8e31 2022-10-23 thomas static void
390 3efd8e31 2022-10-23 thomas disconnect_on_error(struct gotd_client *client, const struct got_error *err)
392 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
394 a6153ffb 2023-08-12 thomas if (err->code != GOT_ERR_EOF) {
395 a6153ffb 2023-08-12 thomas log_warnx("uid %d: %s", client->euid, err->msg);
396 a6153ffb 2023-08-12 thomas if (client->fd != -1) {
397 a6153ffb 2023-08-12 thomas imsg_init(&ibuf, client->fd);
398 a6153ffb 2023-08-12 thomas gotd_imsg_send_error(&ibuf, 0, PROC_GOTD, err);
399 a6153ffb 2023-08-12 thomas imsg_clear(&ibuf);
402 3efd8e31 2022-10-23 thomas disconnect(client);
405 c902213d 2022-10-29 thomas static const struct got_error *
406 c902213d 2022-10-29 thomas send_repo_info(struct gotd_imsgev *iev, struct gotd_repo *repo)
408 c902213d 2022-10-29 thomas const struct got_error *err = NULL;
409 c902213d 2022-10-29 thomas struct gotd_imsg_info_repo irepo;
411 c902213d 2022-10-29 thomas memset(&irepo, 0, sizeof(irepo));
413 c902213d 2022-10-29 thomas if (strlcpy(irepo.repo_name, repo->name, sizeof(irepo.repo_name))
414 c902213d 2022-10-29 thomas >= sizeof(irepo.repo_name))
415 c902213d 2022-10-29 thomas return got_error_msg(GOT_ERR_NO_SPACE, "repo name too long");
416 c902213d 2022-10-29 thomas if (strlcpy(irepo.repo_path, repo->path, sizeof(irepo.repo_path))
417 c902213d 2022-10-29 thomas >= sizeof(irepo.repo_path))
418 c902213d 2022-10-29 thomas return got_error_msg(GOT_ERR_NO_SPACE, "repo path too long");
420 c902213d 2022-10-29 thomas if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_REPO, PROC_GOTD, -1,
421 c902213d 2022-10-29 thomas &irepo, sizeof(irepo)) == -1) {
422 c902213d 2022-10-29 thomas err = got_error_from_errno("imsg compose INFO_REPO");
424 c902213d 2022-10-29 thomas return err;
427 c902213d 2022-10-29 thomas return NULL;
430 c902213d 2022-10-29 thomas static const struct got_error *
431 c902213d 2022-10-29 thomas send_client_info(struct gotd_imsgev *iev, struct gotd_client *client)
433 c902213d 2022-10-29 thomas const struct got_error *err = NULL;
434 c902213d 2022-10-29 thomas struct gotd_imsg_info_client iclient;
435 c902213d 2022-10-29 thomas struct gotd_child_proc *proc;
437 c902213d 2022-10-29 thomas memset(&iclient, 0, sizeof(iclient));
438 c902213d 2022-10-29 thomas iclient.euid = client->euid;
439 c902213d 2022-10-29 thomas iclient.egid = client->egid;
441 27b11d77 2023-01-14 thomas proc = client->repo;
442 c902213d 2022-10-29 thomas if (proc) {
443 414e37cb 2022-12-30 thomas if (strlcpy(iclient.repo_name, proc->repo_path,
444 c902213d 2022-10-29 thomas sizeof(iclient.repo_name)) >= sizeof(iclient.repo_name)) {
445 c902213d 2022-10-29 thomas return got_error_msg(GOT_ERR_NO_SPACE,
446 c902213d 2022-10-29 thomas "repo name too long");
448 c902213d 2022-10-29 thomas if (client_is_writing(client))
449 c902213d 2022-10-29 thomas iclient.is_writing = 1;
451 62ee7d94 2023-01-10 thomas iclient.repo_child_pid = proc->pid;
454 62ee7d94 2023-01-10 thomas if (client->session)
455 62ee7d94 2023-01-10 thomas iclient.session_child_pid = client->session->pid;
457 c902213d 2022-10-29 thomas if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_CLIENT, PROC_GOTD, -1,
458 c902213d 2022-10-29 thomas &iclient, sizeof(iclient)) == -1) {
459 c902213d 2022-10-29 thomas err = got_error_from_errno("imsg compose INFO_CLIENT");
461 c902213d 2022-10-29 thomas return err;
464 c902213d 2022-10-29 thomas return NULL;
467 c902213d 2022-10-29 thomas static const struct got_error *
468 c902213d 2022-10-29 thomas send_info(struct gotd_client *client)
470 c902213d 2022-10-29 thomas const struct got_error *err = NULL;
471 c902213d 2022-10-29 thomas struct gotd_imsg_info info;
472 c902213d 2022-10-29 thomas uint64_t slot;
473 c902213d 2022-10-29 thomas struct gotd_repo *repo;
475 c8cf6821 2023-01-06 thomas if (client->euid != 0)
476 c8cf6821 2023-01-06 thomas return got_error_set_errno(EPERM, "info");
478 c902213d 2022-10-29 thomas info.pid = gotd.pid;
479 c902213d 2022-10-29 thomas info.verbosity = gotd.verbosity;
480 c902213d 2022-10-29 thomas info.nrepos = gotd.nrepos;
481 c902213d 2022-10-29 thomas info.nclients = client_cnt - 1;
483 c902213d 2022-10-29 thomas if (gotd_imsg_compose_event(&client->iev, GOTD_IMSG_INFO, PROC_GOTD, -1,
484 c902213d 2022-10-29 thomas &info, sizeof(info)) == -1) {
485 c902213d 2022-10-29 thomas err = got_error_from_errno("imsg compose INFO");
487 c902213d 2022-10-29 thomas return err;
490 c902213d 2022-10-29 thomas TAILQ_FOREACH(repo, &gotd.repos, entry) {
491 c902213d 2022-10-29 thomas err = send_repo_info(&client->iev, repo);
493 c902213d 2022-10-29 thomas return err;
496 c902213d 2022-10-29 thomas for (slot = 0; slot < nitems(gotd_clients); slot++) {
497 c902213d 2022-10-29 thomas struct gotd_client *c;
498 c902213d 2022-10-29 thomas STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
499 c902213d 2022-10-29 thomas if (c->id == client->id)
500 c902213d 2022-10-29 thomas continue;
501 c902213d 2022-10-29 thomas err = send_client_info(&client->iev, c);
503 c902213d 2022-10-29 thomas return err;
507 c902213d 2022-10-29 thomas return NULL;
510 c902213d 2022-10-29 thomas static const struct got_error *
511 c902213d 2022-10-29 thomas stop_gotd(struct gotd_client *client)
514 c902213d 2022-10-29 thomas if (client->euid != 0)
515 c902213d 2022-10-29 thomas return got_error_set_errno(EPERM, "stop");
517 c902213d 2022-10-29 thomas gotd_shutdown();
518 c902213d 2022-10-29 thomas /* NOTREACHED */
519 729a7e24 2022-11-17 thomas return NULL;
522 3efd8e31 2022-10-23 thomas static const struct got_error *
523 62ee7d94 2023-01-10 thomas start_client_authentication(struct gotd_client *client, struct imsg *imsg)
525 3efd8e31 2022-10-23 thomas const struct got_error *err;
526 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs ireq;
527 729a7e24 2022-11-17 thomas struct gotd_repo *repo = NULL;
528 3efd8e31 2022-10-23 thomas size_t datalen;
530 3efd8e31 2022-10-23 thomas log_debug("list-refs request from uid %d", client->euid);
532 7b1db75e 2023-01-14 thomas if (client->state != GOTD_CLIENT_STATE_NEW)
533 62ee7d94 2023-01-10 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
534 62ee7d94 2023-01-10 thomas "unexpected list-refs request received");
536 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
537 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
538 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
540 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, datalen);
542 3efd8e31 2022-10-23 thomas if (ireq.client_is_reading) {
543 3efd8e31 2022-10-23 thomas err = ensure_client_is_not_writing(client);
545 3efd8e31 2022-10-23 thomas return err;
546 5dcb3a43 2023-04-01 thomas repo = gotd_find_repo_by_name(ireq.repo_name, &gotd);
547 729a7e24 2022-11-17 thomas if (repo == NULL)
548 729a7e24 2022-11-17 thomas return got_error(GOT_ERR_NOT_GIT_REPO);
549 c669c489 2022-12-30 thomas err = start_auth_child(client, GOTD_AUTH_READ, repo,
550 85b37c72 2022-12-30 thomas gotd.argv0, gotd.confpath, gotd.daemonize,
551 85b37c72 2022-12-30 thomas gotd.verbosity);
553 85b37c72 2022-12-30 thomas return err;
555 3efd8e31 2022-10-23 thomas err = ensure_client_is_not_reading(client);
557 729a7e24 2022-11-17 thomas return err;
558 5dcb3a43 2023-04-01 thomas repo = gotd_find_repo_by_name(ireq.repo_name, &gotd);
559 729a7e24 2022-11-17 thomas if (repo == NULL)
560 729a7e24 2022-11-17 thomas return got_error(GOT_ERR_NOT_GIT_REPO);
561 c669c489 2022-12-30 thomas err = start_auth_child(client,
562 c669c489 2022-12-30 thomas GOTD_AUTH_READ | GOTD_AUTH_WRITE,
563 c669c489 2022-12-30 thomas repo, gotd.argv0, gotd.confpath, gotd.daemonize,
564 85b37c72 2022-12-30 thomas gotd.verbosity);
566 85b37c72 2022-12-30 thomas return err;
569 62ee7d94 2023-01-10 thomas evtimer_add(&client->tmo, &auth_timeout);
571 f7abcac2 2023-07-17 thomas /* Flow continues upon authentication success/failure or timeout. */
572 3efd8e31 2022-10-23 thomas return NULL;
575 3efd8e31 2022-10-23 thomas static void
576 3efd8e31 2022-10-23 thomas gotd_request(int fd, short events, void *arg)
578 3efd8e31 2022-10-23 thomas struct gotd_imsgev *iev = arg;
579 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf = &iev->ibuf;
580 3efd8e31 2022-10-23 thomas struct gotd_client *client = iev->handler_arg;
581 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
582 3efd8e31 2022-10-23 thomas struct imsg imsg;
583 3efd8e31 2022-10-23 thomas ssize_t n;
585 3efd8e31 2022-10-23 thomas if (events & EV_WRITE) {
586 3efd8e31 2022-10-23 thomas while (ibuf->w.queued) {
587 3efd8e31 2022-10-23 thomas n = msgbuf_write(&ibuf->w);
588 3efd8e31 2022-10-23 thomas if (n == -1 && errno == EPIPE) {
590 3efd8e31 2022-10-23 thomas * The client has closed its socket.
591 3efd8e31 2022-10-23 thomas * This can happen when Git clients are
592 3efd8e31 2022-10-23 thomas * done sending pack file data.
594 3efd8e31 2022-10-23 thomas msgbuf_clear(&ibuf->w);
595 3efd8e31 2022-10-23 thomas continue;
596 3efd8e31 2022-10-23 thomas } else if (n == -1 && errno != EAGAIN) {
597 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_flush");
598 3efd8e31 2022-10-23 thomas disconnect_on_error(client, err);
601 3efd8e31 2022-10-23 thomas if (n == 0) {
602 3efd8e31 2022-10-23 thomas /* Connection closed. */
603 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_EOF);
604 3efd8e31 2022-10-23 thomas disconnect_on_error(client, err);
609 c902213d 2022-10-29 thomas /* Disconnect gotctl(8) now that messages have been sent. */
610 c902213d 2022-10-29 thomas if (!client_is_reading(client) && !client_is_writing(client)) {
611 c902213d 2022-10-29 thomas disconnect(client);
616 3efd8e31 2022-10-23 thomas if ((events & EV_READ) == 0)
619 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
621 3efd8e31 2022-10-23 thomas while (err == NULL) {
622 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv(&imsg, ibuf, 0);
623 3efd8e31 2022-10-23 thomas if (err) {
624 3efd8e31 2022-10-23 thomas if (err->code == GOT_ERR_PRIVSEP_READ)
625 3efd8e31 2022-10-23 thomas err = NULL;
629 3efd8e31 2022-10-23 thomas evtimer_del(&client->tmo);
631 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
632 c902213d 2022-10-29 thomas case GOTD_IMSG_INFO:
633 c902213d 2022-10-29 thomas err = send_info(client);
635 c902213d 2022-10-29 thomas case GOTD_IMSG_STOP:
636 c902213d 2022-10-29 thomas err = stop_gotd(client);
638 3efd8e31 2022-10-23 thomas case GOTD_IMSG_LIST_REFS:
639 62ee7d94 2023-01-10 thomas err = start_client_authentication(client, &imsg);
642 62ee7d94 2023-01-10 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
643 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
647 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
650 3efd8e31 2022-10-23 thomas if (err) {
651 f5f71a04 2023-01-23 thomas disconnect_on_error(client, err);
653 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(&client->iev);
657 3efd8e31 2022-10-23 thomas static void
658 62ee7d94 2023-01-10 thomas gotd_auth_timeout(int fd, short events, void *arg)
660 3efd8e31 2022-10-23 thomas struct gotd_client *client = arg;
662 62ee7d94 2023-01-10 thomas log_debug("disconnecting uid %d due to authentication timeout",
663 62ee7d94 2023-01-10 thomas client->euid);
664 3efd8e31 2022-10-23 thomas disconnect(client);
667 2b3d32a1 2022-12-30 thomas static const struct got_error *
668 2b3d32a1 2022-12-30 thomas recv_connect(uint32_t *client_id, struct imsg *imsg)
670 2b3d32a1 2022-12-30 thomas const struct got_error *err = NULL;
671 2b3d32a1 2022-12-30 thomas struct gotd_imsg_connect iconnect;
672 2b3d32a1 2022-12-30 thomas size_t datalen;
673 3efd8e31 2022-10-23 thomas int s = -1;
674 3efd8e31 2022-10-23 thomas struct gotd_client *client = NULL;
676 2b3d32a1 2022-12-30 thomas *client_id = 0;
678 2b3d32a1 2022-12-30 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
679 2b3d32a1 2022-12-30 thomas if (datalen != sizeof(iconnect))
680 2b3d32a1 2022-12-30 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
681 2b3d32a1 2022-12-30 thomas memcpy(&iconnect, imsg->data, sizeof(iconnect));
683 2b3d32a1 2022-12-30 thomas s = imsg->fd;
684 3efd8e31 2022-10-23 thomas if (s == -1) {
685 2b3d32a1 2022-12-30 thomas err = got_error(GOT_ERR_PRIVSEP_NO_FD);
686 2b3d32a1 2022-12-30 thomas goto done;
689 2b3d32a1 2022-12-30 thomas if (find_client(iconnect.client_id)) {
690 2b3d32a1 2022-12-30 thomas err = got_error_msg(GOT_ERR_CLIENT_ID, "duplicate client ID");
691 2b3d32a1 2022-12-30 thomas goto done;
694 3efd8e31 2022-10-23 thomas client = calloc(1, sizeof(*client));
695 3efd8e31 2022-10-23 thomas if (client == NULL) {
696 2b3d32a1 2022-12-30 thomas err = got_error_from_errno("calloc");
697 2b3d32a1 2022-12-30 thomas goto done;
700 2b3d32a1 2022-12-30 thomas *client_id = iconnect.client_id;
702 7b1db75e 2023-01-14 thomas client->state = GOTD_CLIENT_STATE_NEW;
703 2b3d32a1 2022-12-30 thomas client->id = iconnect.client_id;
704 3efd8e31 2022-10-23 thomas client->fd = s;
706 0bcde4c8 2022-12-30 thomas /* The auth process will verify UID/GID for us. */
707 0bcde4c8 2022-12-30 thomas client->euid = iconnect.euid;
708 0bcde4c8 2022-12-30 thomas client->egid = iconnect.egid;
710 3efd8e31 2022-10-23 thomas imsg_init(&client->iev.ibuf, client->fd);
711 3efd8e31 2022-10-23 thomas client->iev.handler = gotd_request;
712 3efd8e31 2022-10-23 thomas client->iev.events = EV_READ;
713 3efd8e31 2022-10-23 thomas client->iev.handler_arg = client;
715 3efd8e31 2022-10-23 thomas event_set(&client->iev.ev, client->fd, EV_READ, gotd_request,
716 3efd8e31 2022-10-23 thomas &client->iev);
717 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(&client->iev);
719 62ee7d94 2023-01-10 thomas evtimer_set(&client->tmo, gotd_auth_timeout, client);
721 3efd8e31 2022-10-23 thomas add_client(client);
722 3efd8e31 2022-10-23 thomas log_debug("%s: new client uid %d connected on fd %d", __func__,
723 3efd8e31 2022-10-23 thomas client->euid, client->fd);
725 2b3d32a1 2022-12-30 thomas if (err) {
726 78943464 2023-06-22 thomas struct gotd_child_proc *listen_proc = gotd.listen_proc;
727 2b3d32a1 2022-12-30 thomas struct gotd_imsg_disconnect idisconnect;
729 2b3d32a1 2022-12-30 thomas idisconnect.client_id = client->id;
730 2b3d32a1 2022-12-30 thomas if (gotd_imsg_compose_event(&listen_proc->iev,
731 2b3d32a1 2022-12-30 thomas GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
732 2b3d32a1 2022-12-30 thomas &idisconnect, sizeof(idisconnect)) == -1)
733 2b3d32a1 2022-12-30 thomas log_warn("imsg compose DISCONNECT");
735 2b3d32a1 2022-12-30 thomas if (s != -1)
736 2b3d32a1 2022-12-30 thomas close(s);
739 2b3d32a1 2022-12-30 thomas return err;
742 3efd8e31 2022-10-23 thomas static const char *gotd_proc_names[PROC_MAX] = {
743 3efd8e31 2022-10-23 thomas "parent",
744 2b3d32a1 2022-12-30 thomas "listen",
746 844dda16 2023-06-22 thomas "session_read",
747 844dda16 2023-06-22 thomas "session_write",
748 3efd8e31 2022-10-23 thomas "repo_read",
749 f3807fe5 2023-07-10 thomas "repo_write",
750 f3807fe5 2023-07-10 thomas "gitwrapper"
753 3efd8e31 2022-10-23 thomas static void
754 3efd8e31 2022-10-23 thomas kill_proc(struct gotd_child_proc *proc, int fatal)
756 2c8fb90b 2023-06-25 thomas struct timeval tv = { 5, 0 };
758 2c8fb90b 2023-06-25 thomas log_debug("kill -%d %d", fatal ? SIGKILL : SIGTERM, proc->pid);
760 2c8fb90b 2023-06-25 thomas if (proc->iev.ibuf.fd != -1) {
761 2c8fb90b 2023-06-25 thomas event_del(&proc->iev.ev);
762 2c8fb90b 2023-06-25 thomas msgbuf_clear(&proc->iev.ibuf.w);
763 2c8fb90b 2023-06-25 thomas close(proc->iev.ibuf.fd);
764 2c8fb90b 2023-06-25 thomas proc->iev.ibuf.fd = -1;
767 2c8fb90b 2023-06-25 thomas if (!evtimer_pending(&proc->tmo, NULL) && !fatal)
768 2c8fb90b 2023-06-25 thomas evtimer_add(&proc->tmo, &tv);
770 3efd8e31 2022-10-23 thomas if (fatal) {
771 3efd8e31 2022-10-23 thomas log_warnx("sending SIGKILL to PID %d", proc->pid);
772 3efd8e31 2022-10-23 thomas kill(proc->pid, SIGKILL);
774 3efd8e31 2022-10-23 thomas kill(proc->pid, SIGTERM);
777 3efd8e31 2022-10-23 thomas static void
778 2c8fb90b 2023-06-25 thomas kill_proc_timeout(int fd, short ev, void *d)
780 2c8fb90b 2023-06-25 thomas struct gotd_child_proc *proc = d;
782 2c8fb90b 2023-06-25 thomas log_warnx("timeout waiting for PID %d to terminate;"
783 2c8fb90b 2023-06-25 thomas " retrying with force", proc->pid);
784 2c8fb90b 2023-06-25 thomas kill_proc(proc, 1);
787 2c8fb90b 2023-06-25 thomas static void
788 3efd8e31 2022-10-23 thomas gotd_shutdown(void)
790 85b37c72 2022-12-30 thomas uint64_t slot;
792 62ee7d94 2023-01-10 thomas log_debug("shutting down");
793 85b37c72 2022-12-30 thomas for (slot = 0; slot < nitems(gotd_clients); slot++) {
794 85b37c72 2022-12-30 thomas struct gotd_client *c, *tmp;
796 85b37c72 2022-12-30 thomas STAILQ_FOREACH_SAFE(c, &gotd_clients[slot], entry, tmp)
797 85b37c72 2022-12-30 thomas disconnect(c);
800 2c8fb90b 2023-06-25 thomas kill_proc(gotd.listen_proc, 0);
802 3efd8e31 2022-10-23 thomas log_info("terminating");
806 2c8fb90b 2023-06-25 thomas static struct gotd_child_proc *
807 2c8fb90b 2023-06-25 thomas find_proc_by_pid(pid_t pid)
809 2c8fb90b 2023-06-25 thomas struct gotd_child_proc *proc = NULL;
811 2c8fb90b 2023-06-25 thomas TAILQ_FOREACH(proc, &procs, entry)
812 2c8fb90b 2023-06-25 thomas if (proc->pid == pid)
815 2c8fb90b 2023-06-25 thomas return proc;
819 3efd8e31 2022-10-23 thomas gotd_sighdlr(int sig, short event, void *arg)
821 2c8fb90b 2023-06-25 thomas struct gotd_child_proc *proc;
822 2c8fb90b 2023-06-25 thomas pid_t pid;
823 2c8fb90b 2023-06-25 thomas int status;
826 3efd8e31 2022-10-23 thomas * Normal signal handler rules don't apply because libevent
827 3efd8e31 2022-10-23 thomas * decouples for us.
830 3efd8e31 2022-10-23 thomas switch (sig) {
831 3efd8e31 2022-10-23 thomas case SIGHUP:
832 3efd8e31 2022-10-23 thomas log_info("%s: ignoring SIGHUP", __func__);
834 3efd8e31 2022-10-23 thomas case SIGUSR1:
835 3efd8e31 2022-10-23 thomas log_info("%s: ignoring SIGUSR1", __func__);
837 3efd8e31 2022-10-23 thomas case SIGTERM:
838 3efd8e31 2022-10-23 thomas case SIGINT:
839 3efd8e31 2022-10-23 thomas gotd_shutdown();
841 2c8fb90b 2023-06-25 thomas case SIGCHLD:
842 2c8fb90b 2023-06-25 thomas for (;;) {
843 2c8fb90b 2023-06-25 thomas pid = waitpid(WAIT_ANY, &status, WNOHANG);
844 2c8fb90b 2023-06-25 thomas if (pid == -1) {
845 2c8fb90b 2023-06-25 thomas if (errno == EINTR)
846 2c8fb90b 2023-06-25 thomas continue;
847 2c8fb90b 2023-06-25 thomas if (errno == ECHILD)
849 2c8fb90b 2023-06-25 thomas fatal("waitpid");
851 2c8fb90b 2023-06-25 thomas if (pid == 0)
854 2c8fb90b 2023-06-25 thomas log_debug("reaped pid %d", pid);
855 2c8fb90b 2023-06-25 thomas proc = find_proc_by_pid(pid);
856 2c8fb90b 2023-06-25 thomas if (proc == NULL) {
857 2c8fb90b 2023-06-25 thomas log_info("caught exit of unknown child %d",
859 2c8fb90b 2023-06-25 thomas continue;
862 2c8fb90b 2023-06-25 thomas if (WIFSIGNALED(status)) {
863 2c8fb90b 2023-06-25 thomas log_warnx("child PID %d terminated with"
864 2c8fb90b 2023-06-25 thomas " signal %d", pid, WTERMSIG(status));
867 2c8fb90b 2023-06-25 thomas proc_done(proc);
871 3efd8e31 2022-10-23 thomas fatalx("unexpected signal");
875 3efd8e31 2022-10-23 thomas static const struct got_error *
876 3efd8e31 2022-10-23 thomas ensure_proc_is_reading(struct gotd_client *client,
877 3efd8e31 2022-10-23 thomas struct gotd_child_proc *proc)
879 3efd8e31 2022-10-23 thomas if (!client_is_reading(client)) {
880 3efd8e31 2022-10-23 thomas kill_proc(proc, 1);
881 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_PACKET,
882 3efd8e31 2022-10-23 thomas "PID %d handled a read-request for uid %d but this "
883 3efd8e31 2022-10-23 thomas "user is not reading from a repository", proc->pid,
884 3efd8e31 2022-10-23 thomas client->euid);
887 3efd8e31 2022-10-23 thomas return NULL;
890 3efd8e31 2022-10-23 thomas static const struct got_error *
891 3efd8e31 2022-10-23 thomas ensure_proc_is_writing(struct gotd_client *client,
892 3efd8e31 2022-10-23 thomas struct gotd_child_proc *proc)
894 3efd8e31 2022-10-23 thomas if (!client_is_writing(client)) {
895 3efd8e31 2022-10-23 thomas kill_proc(proc, 1);
896 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_PACKET,
897 3efd8e31 2022-10-23 thomas "PID %d handled a write-request for uid %d but this "
898 3efd8e31 2022-10-23 thomas "user is not writing to a repository", proc->pid,
899 3efd8e31 2022-10-23 thomas client->euid);
902 3efd8e31 2022-10-23 thomas return NULL;
905 3efd8e31 2022-10-23 thomas static int
906 3efd8e31 2022-10-23 thomas verify_imsg_src(struct gotd_client *client, struct gotd_child_proc *proc,
907 3efd8e31 2022-10-23 thomas struct imsg *imsg)
909 3efd8e31 2022-10-23 thomas const struct got_error *err;
910 3efd8e31 2022-10-23 thomas int ret = 0;
912 2b3d32a1 2022-12-30 thomas if (proc->type == PROC_REPO_READ || proc->type == PROC_REPO_WRITE) {
913 27b11d77 2023-01-14 thomas if (client->repo == NULL)
914 2b3d32a1 2022-12-30 thomas fatalx("no process found for uid %d", client->euid);
915 27b11d77 2023-01-14 thomas if (proc->pid != client->repo->pid) {
916 2b3d32a1 2022-12-30 thomas kill_proc(proc, 1);
917 2b3d32a1 2022-12-30 thomas log_warnx("received message from PID %d for uid %d, "
918 2b3d32a1 2022-12-30 thomas "while PID %d is the process serving this user",
919 27b11d77 2023-01-14 thomas proc->pid, client->euid, client->repo->pid);
920 2b3d32a1 2022-12-30 thomas return 0;
923 7fed8fa4 2023-06-22 thomas if (proc->type == PROC_SESSION_READ ||
924 7fed8fa4 2023-06-22 thomas proc->type == PROC_SESSION_WRITE) {
925 62ee7d94 2023-01-10 thomas if (client->session == NULL) {
926 62ee7d94 2023-01-10 thomas log_warnx("no session found for uid %d", client->euid);
927 62ee7d94 2023-01-10 thomas return 0;
929 62ee7d94 2023-01-10 thomas if (proc->pid != client->session->pid) {
930 62ee7d94 2023-01-10 thomas kill_proc(proc, 1);
931 62ee7d94 2023-01-10 thomas log_warnx("received message from PID %d for uid %d, "
932 62ee7d94 2023-01-10 thomas "while PID %d is the process serving this user",
933 62ee7d94 2023-01-10 thomas proc->pid, client->euid, client->session->pid);
934 62ee7d94 2023-01-10 thomas return 0;
938 3efd8e31 2022-10-23 thomas switch (imsg->hdr.type) {
939 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
942 2b3d32a1 2022-12-30 thomas case GOTD_IMSG_CONNECT:
943 2b3d32a1 2022-12-30 thomas if (proc->type != PROC_LISTEN) {
944 2b3d32a1 2022-12-30 thomas err = got_error_fmt(GOT_ERR_BAD_PACKET,
945 2b3d32a1 2022-12-30 thomas "new connection for uid %d from PID %d "
946 2b3d32a1 2022-12-30 thomas "which is not the listen process",
947 c669c489 2022-12-30 thomas proc->pid, client->euid);
951 c669c489 2022-12-30 thomas case GOTD_IMSG_ACCESS_GRANTED:
952 c669c489 2022-12-30 thomas if (proc->type != PROC_AUTH) {
953 c669c489 2022-12-30 thomas err = got_error_fmt(GOT_ERR_BAD_PACKET,
954 c669c489 2022-12-30 thomas "authentication of uid %d from PID %d "
955 c669c489 2022-12-30 thomas "which is not the auth process",
956 2b3d32a1 2022-12-30 thomas proc->pid, client->euid);
960 62ee7d94 2023-01-10 thomas case GOTD_IMSG_CLIENT_SESSION_READY:
961 7fed8fa4 2023-06-22 thomas if (proc->type != PROC_SESSION_READ &&
962 7fed8fa4 2023-06-22 thomas proc->type != PROC_SESSION_WRITE) {
963 62ee7d94 2023-01-10 thomas err = got_error_fmt(GOT_ERR_BAD_PACKET,
964 62ee7d94 2023-01-10 thomas "unexpected \"ready\" signal from PID %d",
965 62ee7d94 2023-01-10 thomas proc->pid);
969 85b37c72 2022-12-30 thomas case GOTD_IMSG_REPO_CHILD_READY:
970 85b37c72 2022-12-30 thomas if (proc->type != PROC_REPO_READ &&
971 85b37c72 2022-12-30 thomas proc->type != PROC_REPO_WRITE) {
972 85b37c72 2022-12-30 thomas err = got_error_fmt(GOT_ERR_BAD_PACKET,
973 85b37c72 2022-12-30 thomas "unexpected \"ready\" signal from PID %d",
974 85b37c72 2022-12-30 thomas proc->pid);
978 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_DONE:
979 3efd8e31 2022-10-23 thomas err = ensure_proc_is_reading(client, proc);
981 3efd8e31 2022-10-23 thomas log_warnx("uid %d: %s", client->euid, err->msg);
985 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_INSTALL:
986 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATES_START:
987 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATE:
988 3efd8e31 2022-10-23 thomas err = ensure_proc_is_writing(client, proc);
990 3efd8e31 2022-10-23 thomas log_warnx("uid %d: %s", client->euid, err->msg);
995 3efd8e31 2022-10-23 thomas log_debug("%s: unexpected imsg %d", __func__, imsg->hdr.type);
999 3efd8e31 2022-10-23 thomas return ret;
1002 3efd8e31 2022-10-23 thomas static const struct got_error *
1003 62ee7d94 2023-01-10 thomas connect_repo_child(struct gotd_client *client,
1004 62ee7d94 2023-01-10 thomas struct gotd_child_proc *repo_proc)
1006 85b37c72 2022-12-30 thomas static const struct got_error *err;
1007 62ee7d94 2023-01-10 thomas struct gotd_imsgev *session_iev = &client->session->iev;
1008 62ee7d94 2023-01-10 thomas struct gotd_imsg_connect_repo_child ireq;
1009 62ee7d94 2023-01-10 thomas int pipe[2];
1010 febe25b7 2023-08-29 thomas int sock_flags = SOCK_STREAM | SOCK_NONBLOCK;
1012 febe25b7 2023-08-29 thomas #ifdef SOCK_CLOEXEC
1013 febe25b7 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
1016 7b1db75e 2023-01-14 thomas if (client->state != GOTD_CLIENT_STATE_ACCESS_GRANTED)
1017 62ee7d94 2023-01-10 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1018 62ee7d94 2023-01-10 thomas "unexpected repo child ready signal received");
1020 febe25b7 2023-08-29 thomas if (socketpair(AF_UNIX, sock_flags, PF_UNSPEC, pipe) == -1)
1021 62ee7d94 2023-01-10 thomas fatal("socketpair");
1023 62ee7d94 2023-01-10 thomas memset(&ireq, 0, sizeof(ireq));
1024 62ee7d94 2023-01-10 thomas ireq.client_id = client->id;
1025 62ee7d94 2023-01-10 thomas ireq.proc_id = repo_proc->type;
1027 62ee7d94 2023-01-10 thomas /* Pass repo child pipe to session child process. */
1028 62ee7d94 2023-01-10 thomas if (gotd_imsg_compose_event(session_iev, GOTD_IMSG_CONNECT_REPO_CHILD,
1029 62ee7d94 2023-01-10 thomas PROC_GOTD, pipe[0], &ireq, sizeof(ireq)) == -1) {
1030 62ee7d94 2023-01-10 thomas err = got_error_from_errno("imsg compose CONNECT_REPO_CHILD");
1031 62ee7d94 2023-01-10 thomas close(pipe[0]);
1032 62ee7d94 2023-01-10 thomas close(pipe[1]);
1033 62ee7d94 2023-01-10 thomas return err;
1036 62ee7d94 2023-01-10 thomas /* Pass session child pipe to repo child process. */
1037 62ee7d94 2023-01-10 thomas if (gotd_imsg_compose_event(&repo_proc->iev,
1038 62ee7d94 2023-01-10 thomas GOTD_IMSG_CONNECT_REPO_CHILD, PROC_GOTD, pipe[1], NULL, 0) == -1) {
1039 62ee7d94 2023-01-10 thomas err = got_error_from_errno("imsg compose CONNECT_REPO_CHILD");
1040 62ee7d94 2023-01-10 thomas close(pipe[1]);
1041 62ee7d94 2023-01-10 thomas return err;
1044 3efd8e31 2022-10-23 thomas return NULL;
1047 3efd8e31 2022-10-23 thomas static void
1048 85b37c72 2022-12-30 thomas gotd_dispatch_listener(int fd, short event, void *arg)
1050 3efd8e31 2022-10-23 thomas struct gotd_imsgev *iev = arg;
1051 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf = &iev->ibuf;
1052 78943464 2023-06-22 thomas struct gotd_child_proc *proc = gotd.listen_proc;
1053 85b37c72 2022-12-30 thomas ssize_t n;
1054 85b37c72 2022-12-30 thomas int shut = 0;
1055 85b37c72 2022-12-30 thomas struct imsg imsg;
1057 85b37c72 2022-12-30 thomas if (proc->iev.ibuf.fd != fd)
1058 85b37c72 2022-12-30 thomas fatalx("%s: unexpected fd %d", __func__, fd);
1060 85b37c72 2022-12-30 thomas if (event & EV_READ) {
1061 85b37c72 2022-12-30 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1062 85b37c72 2022-12-30 thomas fatal("imsg_read error");
1063 85b37c72 2022-12-30 thomas if (n == 0) {
1064 85b37c72 2022-12-30 thomas /* Connection closed. */
1065 85b37c72 2022-12-30 thomas shut = 1;
1066 85b37c72 2022-12-30 thomas goto done;
1070 85b37c72 2022-12-30 thomas if (event & EV_WRITE) {
1071 85b37c72 2022-12-30 thomas n = msgbuf_write(&ibuf->w);
1072 85b37c72 2022-12-30 thomas if (n == -1 && errno != EAGAIN)
1073 85b37c72 2022-12-30 thomas fatal("msgbuf_write");
1074 85b37c72 2022-12-30 thomas if (n == 0) {
1075 85b37c72 2022-12-30 thomas /* Connection closed. */
1076 85b37c72 2022-12-30 thomas shut = 1;
1077 85b37c72 2022-12-30 thomas goto done;
1081 85b37c72 2022-12-30 thomas for (;;) {
1082 85b37c72 2022-12-30 thomas const struct got_error *err = NULL;
1083 85b37c72 2022-12-30 thomas struct gotd_client *client = NULL;
1084 85b37c72 2022-12-30 thomas uint32_t client_id = 0;
1085 85b37c72 2022-12-30 thomas int do_disconnect = 0;
1087 85b37c72 2022-12-30 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1088 85b37c72 2022-12-30 thomas fatal("%s: imsg_get error", __func__);
1089 85b37c72 2022-12-30 thomas if (n == 0) /* No more messages. */
1092 85b37c72 2022-12-30 thomas switch (imsg.hdr.type) {
1093 85b37c72 2022-12-30 thomas case GOTD_IMSG_ERROR:
1094 85b37c72 2022-12-30 thomas do_disconnect = 1;
1095 85b37c72 2022-12-30 thomas err = gotd_imsg_recv_error(&client_id, &imsg);
1097 85b37c72 2022-12-30 thomas case GOTD_IMSG_CONNECT:
1098 85b37c72 2022-12-30 thomas err = recv_connect(&client_id, &imsg);
1100 85b37c72 2022-12-30 thomas default:
1101 85b37c72 2022-12-30 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1105 85b37c72 2022-12-30 thomas client = find_client(client_id);
1106 85b37c72 2022-12-30 thomas if (client == NULL) {
1107 85b37c72 2022-12-30 thomas log_warnx("%s: client not found", __func__);
1108 85b37c72 2022-12-30 thomas imsg_free(&imsg);
1109 85b37c72 2022-12-30 thomas continue;
1112 85b37c72 2022-12-30 thomas if (err)
1113 85b37c72 2022-12-30 thomas log_warnx("uid %d: %s", client->euid, err->msg);
1115 85b37c72 2022-12-30 thomas if (do_disconnect) {
1116 85b37c72 2022-12-30 thomas if (err)
1117 85b37c72 2022-12-30 thomas disconnect_on_error(client, err);
1119 85b37c72 2022-12-30 thomas disconnect(client);
1122 85b37c72 2022-12-30 thomas imsg_free(&imsg);
1125 85b37c72 2022-12-30 thomas if (!shut) {
1126 85b37c72 2022-12-30 thomas gotd_imsg_event_add(iev);
1127 85b37c72 2022-12-30 thomas } else {
1128 85b37c72 2022-12-30 thomas /* This pipe is dead. Remove its event handler */
1129 85b37c72 2022-12-30 thomas event_del(&iev->ev);
1130 85b37c72 2022-12-30 thomas event_loopexit(NULL);
1134 85b37c72 2022-12-30 thomas static void
1135 c669c489 2022-12-30 thomas gotd_dispatch_auth_child(int fd, short event, void *arg)
1137 c669c489 2022-12-30 thomas const struct got_error *err = NULL;
1138 c669c489 2022-12-30 thomas struct gotd_imsgev *iev = arg;
1139 c669c489 2022-12-30 thomas struct imsgbuf *ibuf = &iev->ibuf;
1140 c669c489 2022-12-30 thomas struct gotd_client *client;
1141 c669c489 2022-12-30 thomas struct gotd_repo *repo = NULL;
1142 c669c489 2022-12-30 thomas ssize_t n;
1143 c669c489 2022-12-30 thomas int shut = 0;
1144 c669c489 2022-12-30 thomas struct imsg imsg;
1145 c669c489 2022-12-30 thomas uint32_t client_id = 0;
1146 c669c489 2022-12-30 thomas int do_disconnect = 0;
1148 c669c489 2022-12-30 thomas client = find_client_by_proc_fd(fd);
1149 b7acbe65 2023-02-17 thomas if (client == NULL) {
1150 b7acbe65 2023-02-17 thomas /* Can happen during process teardown. */
1151 b7acbe65 2023-02-17 thomas warnx("cannot find client for fd %d", fd);
1152 b7acbe65 2023-02-17 thomas shut = 1;
1153 b7acbe65 2023-02-17 thomas goto done;
1156 c669c489 2022-12-30 thomas if (client->auth == NULL)
1157 c669c489 2022-12-30 thomas fatalx("cannot find auth child process for fd %d", fd);
1159 c669c489 2022-12-30 thomas if (event & EV_READ) {
1160 c669c489 2022-12-30 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1161 c669c489 2022-12-30 thomas fatal("imsg_read error");
1162 c669c489 2022-12-30 thomas if (n == 0) {
1163 c669c489 2022-12-30 thomas /* Connection closed. */
1164 c669c489 2022-12-30 thomas shut = 1;
1165 c669c489 2022-12-30 thomas goto done;
1169 c669c489 2022-12-30 thomas if (event & EV_WRITE) {
1170 c669c489 2022-12-30 thomas n = msgbuf_write(&ibuf->w);
1171 c669c489 2022-12-30 thomas if (n == -1 && errno != EAGAIN)
1172 c669c489 2022-12-30 thomas fatal("msgbuf_write");
1173 c669c489 2022-12-30 thomas if (n == 0) {
1174 c669c489 2022-12-30 thomas /* Connection closed. */
1175 c669c489 2022-12-30 thomas shut = 1;
1177 c669c489 2022-12-30 thomas goto done;
1180 c669c489 2022-12-30 thomas if (client->auth->iev.ibuf.fd != fd)
1181 c669c489 2022-12-30 thomas fatalx("%s: unexpected fd %d", __func__, fd);
1183 c669c489 2022-12-30 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1184 c669c489 2022-12-30 thomas fatal("%s: imsg_get error", __func__);
1185 c669c489 2022-12-30 thomas if (n == 0) /* No more messages. */
1188 c669c489 2022-12-30 thomas evtimer_del(&client->tmo);
1190 c669c489 2022-12-30 thomas switch (imsg.hdr.type) {
1191 c669c489 2022-12-30 thomas case GOTD_IMSG_ERROR:
1192 c669c489 2022-12-30 thomas do_disconnect = 1;
1193 c669c489 2022-12-30 thomas err = gotd_imsg_recv_error(&client_id, &imsg);
1195 c669c489 2022-12-30 thomas case GOTD_IMSG_ACCESS_GRANTED:
1196 7b1db75e 2023-01-14 thomas client->state = GOTD_CLIENT_STATE_ACCESS_GRANTED;
1198 c669c489 2022-12-30 thomas default:
1199 c669c489 2022-12-30 thomas do_disconnect = 1;
1200 c669c489 2022-12-30 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1204 c669c489 2022-12-30 thomas if (!verify_imsg_src(client, client->auth, &imsg)) {
1205 c669c489 2022-12-30 thomas do_disconnect = 1;
1206 c669c489 2022-12-30 thomas log_debug("dropping imsg type %d from PID %d",
1207 c669c489 2022-12-30 thomas imsg.hdr.type, client->auth->pid);
1209 c669c489 2022-12-30 thomas imsg_free(&imsg);
1211 c669c489 2022-12-30 thomas if (do_disconnect) {
1212 c669c489 2022-12-30 thomas if (err)
1213 c669c489 2022-12-30 thomas disconnect_on_error(client, err);
1215 c669c489 2022-12-30 thomas disconnect(client);
1219 5dcb3a43 2023-04-01 thomas repo = gotd_find_repo_by_name(client->auth->repo_name, &gotd);
1220 c669c489 2022-12-30 thomas if (repo == NULL) {
1221 c669c489 2022-12-30 thomas err = got_error(GOT_ERR_NOT_GIT_REPO);
1222 c669c489 2022-12-30 thomas goto done;
1224 c669c489 2022-12-30 thomas kill_auth_proc(client);
1226 e17294f7 2023-01-27 thomas log_info("authenticated uid %d for repository %s",
1227 c669c489 2022-12-30 thomas client->euid, repo->name);
1229 62ee7d94 2023-01-10 thomas err = start_session_child(client, repo, gotd.argv0,
1230 46ecc01f 2022-12-30 thomas gotd.confpath, gotd.daemonize, gotd.verbosity);
1231 62ee7d94 2023-01-10 thomas if (err)
1232 62ee7d94 2023-01-10 thomas goto done;
1234 c669c489 2022-12-30 thomas if (err)
1235 c669c489 2022-12-30 thomas log_warnx("uid %d: %s", client->euid, err->msg);
1237 c669c489 2022-12-30 thomas /* We might have killed the auth process by now. */
1238 c669c489 2022-12-30 thomas if (client->auth != NULL) {
1239 c669c489 2022-12-30 thomas if (!shut) {
1240 c669c489 2022-12-30 thomas gotd_imsg_event_add(iev);
1241 c669c489 2022-12-30 thomas } else {
1242 c669c489 2022-12-30 thomas /* This pipe is dead. Remove its event handler */
1243 c669c489 2022-12-30 thomas event_del(&iev->ev);
1248 62ee7d94 2023-01-10 thomas static const struct got_error *
1249 62ee7d94 2023-01-10 thomas connect_session(struct gotd_client *client)
1251 62ee7d94 2023-01-10 thomas const struct got_error *err = NULL;
1252 62ee7d94 2023-01-10 thomas struct gotd_imsg_connect iconnect;
1255 62ee7d94 2023-01-10 thomas memset(&iconnect, 0, sizeof(iconnect));
1257 62ee7d94 2023-01-10 thomas s = dup(client->fd);
1258 62ee7d94 2023-01-10 thomas if (s == -1)
1259 62ee7d94 2023-01-10 thomas return got_error_from_errno("dup");
1261 62ee7d94 2023-01-10 thomas iconnect.client_id = client->id;
1262 62ee7d94 2023-01-10 thomas iconnect.euid = client->euid;
1263 62ee7d94 2023-01-10 thomas iconnect.egid = client->egid;
1265 62ee7d94 2023-01-10 thomas if (gotd_imsg_compose_event(&client->session->iev, GOTD_IMSG_CONNECT,
1266 62ee7d94 2023-01-10 thomas PROC_GOTD, s, &iconnect, sizeof(iconnect)) == -1) {
1267 62ee7d94 2023-01-10 thomas err = got_error_from_errno("imsg compose CONNECT");
1268 62ee7d94 2023-01-10 thomas close(s);
1269 62ee7d94 2023-01-10 thomas return err;
1273 62ee7d94 2023-01-10 thomas * We are no longer interested in messages from this client.
1274 62ee7d94 2023-01-10 thomas * Further client requests will be handled by the session process.
1276 62ee7d94 2023-01-10 thomas msgbuf_clear(&client->iev.ibuf.w);
1277 62ee7d94 2023-01-10 thomas imsg_clear(&client->iev.ibuf);
1278 62ee7d94 2023-01-10 thomas event_del(&client->iev.ev);
1279 62ee7d94 2023-01-10 thomas client->fd = -1; /* will be closed via copy in client->iev.ibuf.fd */
1281 62ee7d94 2023-01-10 thomas return NULL;
1284 c669c489 2022-12-30 thomas static void
1285 62ee7d94 2023-01-10 thomas gotd_dispatch_client_session(int fd, short event, void *arg)
1287 85b37c72 2022-12-30 thomas struct gotd_imsgev *iev = arg;
1288 85b37c72 2022-12-30 thomas struct imsgbuf *ibuf = &iev->ibuf;
1289 3efd8e31 2022-10-23 thomas struct gotd_child_proc *proc = NULL;
1290 85b37c72 2022-12-30 thomas struct gotd_client *client = NULL;
1291 3efd8e31 2022-10-23 thomas ssize_t n;
1292 3efd8e31 2022-10-23 thomas int shut = 0;
1293 3efd8e31 2022-10-23 thomas struct imsg imsg;
1295 62ee7d94 2023-01-10 thomas client = find_client_by_proc_fd(fd);
1296 b7acbe65 2023-02-17 thomas if (client == NULL) {
1297 b7acbe65 2023-02-17 thomas /* Can happen during process teardown. */
1298 b7acbe65 2023-02-17 thomas warnx("cannot find client for fd %d", fd);
1299 b7acbe65 2023-02-17 thomas shut = 1;
1300 b7acbe65 2023-02-17 thomas goto done;
1303 3efd8e31 2022-10-23 thomas if (event & EV_READ) {
1304 3efd8e31 2022-10-23 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1305 3efd8e31 2022-10-23 thomas fatal("imsg_read error");
1306 3efd8e31 2022-10-23 thomas if (n == 0) {
1307 3efd8e31 2022-10-23 thomas /* Connection closed. */
1308 3efd8e31 2022-10-23 thomas shut = 1;
1309 3efd8e31 2022-10-23 thomas goto done;
1313 3efd8e31 2022-10-23 thomas if (event & EV_WRITE) {
1314 3efd8e31 2022-10-23 thomas n = msgbuf_write(&ibuf->w);
1315 3efd8e31 2022-10-23 thomas if (n == -1 && errno != EAGAIN)
1316 3efd8e31 2022-10-23 thomas fatal("msgbuf_write");
1317 3efd8e31 2022-10-23 thomas if (n == 0) {
1318 3efd8e31 2022-10-23 thomas /* Connection closed. */
1319 3efd8e31 2022-10-23 thomas shut = 1;
1320 3efd8e31 2022-10-23 thomas goto done;
1324 62ee7d94 2023-01-10 thomas proc = client->session;
1325 62ee7d94 2023-01-10 thomas if (proc == NULL)
1326 62ee7d94 2023-01-10 thomas fatalx("cannot find session child process for fd %d", fd);
1328 62ee7d94 2023-01-10 thomas for (;;) {
1329 62ee7d94 2023-01-10 thomas const struct got_error *err = NULL;
1330 62ee7d94 2023-01-10 thomas uint32_t client_id = 0;
1331 62ee7d94 2023-01-10 thomas int do_disconnect = 0, do_start_repo_child = 0;
1333 62ee7d94 2023-01-10 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1334 62ee7d94 2023-01-10 thomas fatal("%s: imsg_get error", __func__);
1335 62ee7d94 2023-01-10 thomas if (n == 0) /* No more messages. */
1338 62ee7d94 2023-01-10 thomas switch (imsg.hdr.type) {
1339 62ee7d94 2023-01-10 thomas case GOTD_IMSG_ERROR:
1340 62ee7d94 2023-01-10 thomas do_disconnect = 1;
1341 62ee7d94 2023-01-10 thomas err = gotd_imsg_recv_error(&client_id, &imsg);
1343 62ee7d94 2023-01-10 thomas case GOTD_IMSG_CLIENT_SESSION_READY:
1344 7b1db75e 2023-01-14 thomas if (client->state != GOTD_CLIENT_STATE_ACCESS_GRANTED) {
1345 62ee7d94 2023-01-10 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1348 62ee7d94 2023-01-10 thomas do_start_repo_child = 1;
1350 62ee7d94 2023-01-10 thomas case GOTD_IMSG_DISCONNECT:
1351 62ee7d94 2023-01-10 thomas do_disconnect = 1;
1353 62ee7d94 2023-01-10 thomas default:
1354 62ee7d94 2023-01-10 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1358 62ee7d94 2023-01-10 thomas if (!verify_imsg_src(client, proc, &imsg)) {
1359 62ee7d94 2023-01-10 thomas log_debug("dropping imsg type %d from PID %d",
1360 62ee7d94 2023-01-10 thomas imsg.hdr.type, proc->pid);
1361 62ee7d94 2023-01-10 thomas imsg_free(&imsg);
1362 62ee7d94 2023-01-10 thomas continue;
1364 62ee7d94 2023-01-10 thomas if (err)
1365 62ee7d94 2023-01-10 thomas log_warnx("uid %d: %s", client->euid, err->msg);
1367 62ee7d94 2023-01-10 thomas if (do_start_repo_child) {
1368 62ee7d94 2023-01-10 thomas struct gotd_repo *repo;
1369 5dcb3a43 2023-04-01 thomas const char *name = client->session->repo_name;
1371 5dcb3a43 2023-04-01 thomas repo = gotd_find_repo_by_name(name, &gotd);
1372 62ee7d94 2023-01-10 thomas if (repo != NULL) {
1373 62ee7d94 2023-01-10 thomas enum gotd_procid proc_type;
1375 62ee7d94 2023-01-10 thomas if (client->required_auth & GOTD_AUTH_WRITE)
1376 62ee7d94 2023-01-10 thomas proc_type = PROC_REPO_WRITE;
1378 62ee7d94 2023-01-10 thomas proc_type = PROC_REPO_READ;
1380 62ee7d94 2023-01-10 thomas err = start_repo_child(client, proc_type, repo,
1381 62ee7d94 2023-01-10 thomas gotd.argv0, gotd.confpath, gotd.daemonize,
1382 62ee7d94 2023-01-10 thomas gotd.verbosity);
1384 62ee7d94 2023-01-10 thomas err = got_error(GOT_ERR_NOT_GIT_REPO);
1386 62ee7d94 2023-01-10 thomas if (err) {
1387 62ee7d94 2023-01-10 thomas log_warnx("uid %d: %s", client->euid, err->msg);
1388 62ee7d94 2023-01-10 thomas do_disconnect = 1;
1392 62ee7d94 2023-01-10 thomas if (do_disconnect) {
1393 62ee7d94 2023-01-10 thomas if (err)
1394 62ee7d94 2023-01-10 thomas disconnect_on_error(client, err);
1396 62ee7d94 2023-01-10 thomas disconnect(client);
1399 62ee7d94 2023-01-10 thomas imsg_free(&imsg);
1402 62ee7d94 2023-01-10 thomas if (!shut) {
1403 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(iev);
1404 62ee7d94 2023-01-10 thomas } else {
1405 62ee7d94 2023-01-10 thomas /* This pipe is dead. Remove its event handler */
1406 62ee7d94 2023-01-10 thomas event_del(&iev->ev);
1407 62ee7d94 2023-01-10 thomas disconnect(client);
1411 62ee7d94 2023-01-10 thomas static void
1412 62ee7d94 2023-01-10 thomas gotd_dispatch_repo_child(int fd, short event, void *arg)
1414 62ee7d94 2023-01-10 thomas struct gotd_imsgev *iev = arg;
1415 62ee7d94 2023-01-10 thomas struct imsgbuf *ibuf = &iev->ibuf;
1416 62ee7d94 2023-01-10 thomas struct gotd_child_proc *proc = NULL;
1417 62ee7d94 2023-01-10 thomas struct gotd_client *client;
1418 62ee7d94 2023-01-10 thomas ssize_t n;
1419 62ee7d94 2023-01-10 thomas int shut = 0;
1420 62ee7d94 2023-01-10 thomas struct imsg imsg;
1422 85b37c72 2022-12-30 thomas client = find_client_by_proc_fd(fd);
1423 b7acbe65 2023-02-17 thomas if (client == NULL) {
1424 b7acbe65 2023-02-17 thomas /* Can happen during process teardown. */
1425 b7acbe65 2023-02-17 thomas warnx("cannot find client for fd %d", fd);
1426 b7acbe65 2023-02-17 thomas shut = 1;
1427 b7acbe65 2023-02-17 thomas goto done;
1430 62ee7d94 2023-01-10 thomas if (event & EV_READ) {
1431 62ee7d94 2023-01-10 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1432 62ee7d94 2023-01-10 thomas fatal("imsg_read error");
1433 62ee7d94 2023-01-10 thomas if (n == 0) {
1434 62ee7d94 2023-01-10 thomas /* Connection closed. */
1435 62ee7d94 2023-01-10 thomas shut = 1;
1436 62ee7d94 2023-01-10 thomas goto done;
1440 62ee7d94 2023-01-10 thomas if (event & EV_WRITE) {
1441 62ee7d94 2023-01-10 thomas n = msgbuf_write(&ibuf->w);
1442 62ee7d94 2023-01-10 thomas if (n == -1 && errno != EAGAIN)
1443 62ee7d94 2023-01-10 thomas fatal("msgbuf_write");
1444 62ee7d94 2023-01-10 thomas if (n == 0) {
1445 62ee7d94 2023-01-10 thomas /* Connection closed. */
1446 62ee7d94 2023-01-10 thomas shut = 1;
1447 62ee7d94 2023-01-10 thomas goto done;
1451 27b11d77 2023-01-14 thomas proc = client->repo;
1452 3efd8e31 2022-10-23 thomas if (proc == NULL)
1453 3efd8e31 2022-10-23 thomas fatalx("cannot find child process for fd %d", fd);
1455 3efd8e31 2022-10-23 thomas for (;;) {
1456 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1457 3efd8e31 2022-10-23 thomas uint32_t client_id = 0;
1458 3efd8e31 2022-10-23 thomas int do_disconnect = 0;
1460 3efd8e31 2022-10-23 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1461 3efd8e31 2022-10-23 thomas fatal("%s: imsg_get error", __func__);
1462 3efd8e31 2022-10-23 thomas if (n == 0) /* No more messages. */
1465 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1466 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
1467 3efd8e31 2022-10-23 thomas do_disconnect = 1;
1468 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(&client_id, &imsg);
1470 85b37c72 2022-12-30 thomas case GOTD_IMSG_REPO_CHILD_READY:
1471 62ee7d94 2023-01-10 thomas err = connect_session(client);
1472 62ee7d94 2023-01-10 thomas if (err)
1474 62ee7d94 2023-01-10 thomas err = connect_repo_child(client, proc);
1476 3efd8e31 2022-10-23 thomas default:
1477 3efd8e31 2022-10-23 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1481 3efd8e31 2022-10-23 thomas if (!verify_imsg_src(client, proc, &imsg)) {
1482 3efd8e31 2022-10-23 thomas log_debug("dropping imsg type %d from PID %d",
1483 3efd8e31 2022-10-23 thomas imsg.hdr.type, proc->pid);
1484 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1485 3efd8e31 2022-10-23 thomas continue;
1487 3efd8e31 2022-10-23 thomas if (err)
1488 3efd8e31 2022-10-23 thomas log_warnx("uid %d: %s", client->euid, err->msg);
1490 3efd8e31 2022-10-23 thomas if (do_disconnect) {
1491 3efd8e31 2022-10-23 thomas if (err)
1492 3efd8e31 2022-10-23 thomas disconnect_on_error(client, err);
1494 3efd8e31 2022-10-23 thomas disconnect(client);
1497 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1500 3efd8e31 2022-10-23 thomas if (!shut) {
1501 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(iev);
1502 3efd8e31 2022-10-23 thomas } else {
1503 3efd8e31 2022-10-23 thomas /* This pipe is dead. Remove its event handler */
1504 3efd8e31 2022-10-23 thomas event_del(&iev->ev);
1505 62ee7d94 2023-01-10 thomas disconnect(client);
1509 3efd8e31 2022-10-23 thomas static pid_t
1510 414e37cb 2022-12-30 thomas start_child(enum gotd_procid proc_id, const char *repo_path,
1511 832b8374 2022-10-31 thomas char *argv0, const char *confpath, int fd, int daemonize, int verbosity)
1513 832b8374 2022-10-31 thomas char *argv[11];
1514 3efd8e31 2022-10-23 thomas int argc = 0;
1515 3efd8e31 2022-10-23 thomas pid_t pid;
1517 3efd8e31 2022-10-23 thomas switch (pid = fork()) {
1518 3efd8e31 2022-10-23 thomas case -1:
1519 3efd8e31 2022-10-23 thomas fatal("cannot fork");
1522 3efd8e31 2022-10-23 thomas default:
1523 3efd8e31 2022-10-23 thomas close(fd);
1524 3efd8e31 2022-10-23 thomas return pid;
1527 bb3a6ce9 2022-11-17 thomas if (fd != GOTD_FILENO_MSG_PIPE) {
1528 bb3a6ce9 2022-11-17 thomas if (dup2(fd, GOTD_FILENO_MSG_PIPE) == -1)
1529 3efd8e31 2022-10-23 thomas fatal("cannot setup imsg fd");
1530 3efd8e31 2022-10-23 thomas } else if (fcntl(fd, F_SETFD, 0) == -1)
1531 3efd8e31 2022-10-23 thomas fatal("cannot setup imsg fd");
1533 3efd8e31 2022-10-23 thomas argv[argc++] = argv0;
1534 3efd8e31 2022-10-23 thomas switch (proc_id) {
1535 2b3d32a1 2022-12-30 thomas case PROC_LISTEN:
1536 2b3d32a1 2022-12-30 thomas argv[argc++] = (char *)"-L";
1538 c669c489 2022-12-30 thomas case PROC_AUTH:
1539 c669c489 2022-12-30 thomas argv[argc++] = (char *)"-A";
1541 7fed8fa4 2023-06-22 thomas case PROC_SESSION_READ:
1542 7fed8fa4 2023-06-22 thomas argv[argc++] = (char *)"-s";
1544 7fed8fa4 2023-06-22 thomas case PROC_SESSION_WRITE:
1545 62ee7d94 2023-01-10 thomas argv[argc++] = (char *)"-S";
1547 3efd8e31 2022-10-23 thomas case PROC_REPO_READ:
1548 3efd8e31 2022-10-23 thomas argv[argc++] = (char *)"-R";
1550 3efd8e31 2022-10-23 thomas case PROC_REPO_WRITE:
1551 3efd8e31 2022-10-23 thomas argv[argc++] = (char *)"-W";
1553 3efd8e31 2022-10-23 thomas default:
1554 3efd8e31 2022-10-23 thomas fatalx("invalid process id %d", proc_id);
1557 832b8374 2022-10-31 thomas argv[argc++] = (char *)"-f";
1558 832b8374 2022-10-31 thomas argv[argc++] = (char *)confpath;
1560 414e37cb 2022-12-30 thomas if (repo_path) {
1561 2b3d32a1 2022-12-30 thomas argv[argc++] = (char *)"-P";
1562 414e37cb 2022-12-30 thomas argv[argc++] = (char *)repo_path;
1565 3efd8e31 2022-10-23 thomas if (!daemonize)
1566 3efd8e31 2022-10-23 thomas argv[argc++] = (char *)"-d";
1567 3efd8e31 2022-10-23 thomas if (verbosity > 0)
1568 3efd8e31 2022-10-23 thomas argv[argc++] = (char *)"-v";
1569 3efd8e31 2022-10-23 thomas if (verbosity > 1)
1570 3efd8e31 2022-10-23 thomas argv[argc++] = (char *)"-v";
1571 3efd8e31 2022-10-23 thomas argv[argc++] = NULL;
1573 3efd8e31 2022-10-23 thomas execvp(argv0, argv);
1574 3efd8e31 2022-10-23 thomas fatal("execvp");
1577 3efd8e31 2022-10-23 thomas static void
1578 2b3d32a1 2022-12-30 thomas start_listener(char *argv0, const char *confpath, int daemonize, int verbosity)
1580 78943464 2023-06-22 thomas struct gotd_child_proc *proc;
1581 4efc8dcb 2023-08-29 thomas int sock_flags = SOCK_STREAM|SOCK_NONBLOCK;
1583 4efc8dcb 2023-08-29 thomas #ifdef SOCK_CLOEXEC
1584 4efc8dcb 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
1587 78943464 2023-06-22 thomas proc = calloc(1, sizeof(*proc));
1588 78943464 2023-06-22 thomas if (proc == NULL)
1589 78943464 2023-06-22 thomas fatal("calloc");
1591 2c8fb90b 2023-06-25 thomas TAILQ_INSERT_HEAD(&procs, proc, entry);
1593 2c8fb90b 2023-06-25 thomas /* proc->tmo is initialized in main() after event_init() */
1595 2b3d32a1 2022-12-30 thomas proc->type = PROC_LISTEN;
1597 febe25b7 2023-08-29 thomas if (socketpair(AF_UNIX, sock_flags,
1598 2b3d32a1 2022-12-30 thomas PF_UNSPEC, proc->pipe) == -1)
1599 2b3d32a1 2022-12-30 thomas fatal("socketpair");
1601 2b3d32a1 2022-12-30 thomas proc->pid = start_child(proc->type, NULL, argv0, confpath,
1602 2b3d32a1 2022-12-30 thomas proc->pipe[1], daemonize, verbosity);
1603 2b3d32a1 2022-12-30 thomas imsg_init(&proc->iev.ibuf, proc->pipe[0]);
1604 85b37c72 2022-12-30 thomas proc->iev.handler = gotd_dispatch_listener;
1605 2b3d32a1 2022-12-30 thomas proc->iev.events = EV_READ;
1606 2b3d32a1 2022-12-30 thomas proc->iev.handler_arg = NULL;
1608 78943464 2023-06-22 thomas gotd.listen_proc = proc;
1611 85b37c72 2022-12-30 thomas static const struct got_error *
1612 62ee7d94 2023-01-10 thomas start_session_child(struct gotd_client *client, struct gotd_repo *repo,
1613 62ee7d94 2023-01-10 thomas char *argv0, const char *confpath, int daemonize, int verbosity)
1615 62ee7d94 2023-01-10 thomas struct gotd_child_proc *proc;
1616 febe25b7 2023-08-29 thomas int sock_flags = SOCK_STREAM | SOCK_NONBLOCK;
1618 febe25b7 2023-08-29 thomas #ifdef SOCK_CLOEXEC
1619 febe25b7 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
1622 62ee7d94 2023-01-10 thomas proc = calloc(1, sizeof(*proc));
1623 62ee7d94 2023-01-10 thomas if (proc == NULL)
1624 62ee7d94 2023-01-10 thomas return got_error_from_errno("calloc");
1626 2c8fb90b 2023-06-25 thomas TAILQ_INSERT_HEAD(&procs, proc, entry);
1627 2c8fb90b 2023-06-25 thomas evtimer_set(&proc->tmo, kill_proc_timeout, proc);
1629 7fed8fa4 2023-06-22 thomas if (client_is_reading(client))
1630 7fed8fa4 2023-06-22 thomas proc->type = PROC_SESSION_READ;
1632 7fed8fa4 2023-06-22 thomas proc->type = PROC_SESSION_WRITE;
1633 62ee7d94 2023-01-10 thomas if (strlcpy(proc->repo_name, repo->name,
1634 62ee7d94 2023-01-10 thomas sizeof(proc->repo_name)) >= sizeof(proc->repo_name))
1635 62ee7d94 2023-01-10 thomas fatalx("repository name too long: %s", repo->name);
1636 62ee7d94 2023-01-10 thomas log_debug("starting client uid %d session for repository %s",
1637 62ee7d94 2023-01-10 thomas client->euid, repo->name);
1638 62ee7d94 2023-01-10 thomas if (strlcpy(proc->repo_path, repo->path, sizeof(proc->repo_path)) >=
1639 62ee7d94 2023-01-10 thomas sizeof(proc->repo_path))
1640 62ee7d94 2023-01-10 thomas fatalx("repository path too long: %s", repo->path);
1641 febe25b7 2023-08-29 thomas if (socketpair(AF_UNIX, sock_flags, PF_UNSPEC, proc->pipe) == -1)
1642 62ee7d94 2023-01-10 thomas fatal("socketpair");
1643 62ee7d94 2023-01-10 thomas proc->pid = start_child(proc->type, proc->repo_path, argv0,
1644 62ee7d94 2023-01-10 thomas confpath, proc->pipe[1], daemonize, verbosity);
1645 62ee7d94 2023-01-10 thomas imsg_init(&proc->iev.ibuf, proc->pipe[0]);
1646 62ee7d94 2023-01-10 thomas log_debug("proc %s %s is on fd %d",
1647 62ee7d94 2023-01-10 thomas gotd_proc_names[proc->type], proc->repo_path,
1648 62ee7d94 2023-01-10 thomas proc->pipe[0]);
1649 62ee7d94 2023-01-10 thomas proc->iev.handler = gotd_dispatch_client_session;
1650 62ee7d94 2023-01-10 thomas proc->iev.events = EV_READ;
1651 62ee7d94 2023-01-10 thomas proc->iev.handler_arg = NULL;
1652 62ee7d94 2023-01-10 thomas event_set(&proc->iev.ev, proc->iev.ibuf.fd, EV_READ,
1653 62ee7d94 2023-01-10 thomas gotd_dispatch_client_session, &proc->iev);
1654 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(&proc->iev);
1656 62ee7d94 2023-01-10 thomas client->session = proc;
1657 62ee7d94 2023-01-10 thomas return NULL;
1660 62ee7d94 2023-01-10 thomas static const struct got_error *
1661 85b37c72 2022-12-30 thomas start_repo_child(struct gotd_client *client, enum gotd_procid proc_type,
1662 85b37c72 2022-12-30 thomas struct gotd_repo *repo, char *argv0, const char *confpath,
1663 832b8374 2022-10-31 thomas int daemonize, int verbosity)
1665 3efd8e31 2022-10-23 thomas struct gotd_child_proc *proc;
1666 febe25b7 2023-08-29 thomas int sock_flags = SOCK_STREAM|SOCK_NONBLOCK;
1668 febe25b7 2023-08-29 thomas #ifdef SOCK_CLOEXEC
1669 febe25b7 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
1672 85b37c72 2022-12-30 thomas if (proc_type != PROC_REPO_READ && proc_type != PROC_REPO_WRITE)
1673 85b37c72 2022-12-30 thomas return got_error_msg(GOT_ERR_NOT_IMPL, "bad process type");
1675 85b37c72 2022-12-30 thomas proc = calloc(1, sizeof(*proc));
1676 85b37c72 2022-12-30 thomas if (proc == NULL)
1677 85b37c72 2022-12-30 thomas return got_error_from_errno("calloc");
1679 2c8fb90b 2023-06-25 thomas TAILQ_INSERT_HEAD(&procs, proc, entry);
1680 2c8fb90b 2023-06-25 thomas evtimer_set(&proc->tmo, kill_proc_timeout, proc);
1682 85b37c72 2022-12-30 thomas proc->type = proc_type;
1683 85b37c72 2022-12-30 thomas if (strlcpy(proc->repo_name, repo->name,
1684 85b37c72 2022-12-30 thomas sizeof(proc->repo_name)) >= sizeof(proc->repo_name))
1685 85b37c72 2022-12-30 thomas fatalx("repository name too long: %s", repo->name);
1686 85b37c72 2022-12-30 thomas log_debug("starting %s for repository %s",
1687 85b37c72 2022-12-30 thomas proc->type == PROC_REPO_READ ? "reader" : "writer", repo->name);
1689 fe6a8988 2023-01-08 thomas if (strlcpy(proc->repo_path, repo->path, sizeof(proc->repo_path)) >=
1690 fe6a8988 2023-01-08 thomas sizeof(proc->repo_path))
1691 fe6a8988 2023-01-08 thomas fatalx("repository path too long: %s", repo->path);
1692 febe25b7 2023-08-29 thomas if (realpath(repo->path, proc->repo_path) == NULL)
1693 febe25b7 2023-08-29 thomas fatal("%s", repo->path);
1694 febe25b7 2023-08-29 thomas if (socketpair(AF_UNIX, sock_flags,
1695 85b37c72 2022-12-30 thomas PF_UNSPEC, proc->pipe) == -1)
1696 85b37c72 2022-12-30 thomas fatal("socketpair");
1697 85b37c72 2022-12-30 thomas proc->pid = start_child(proc->type, proc->repo_path, argv0,
1698 85b37c72 2022-12-30 thomas confpath, proc->pipe[1], daemonize, verbosity);
1699 85b37c72 2022-12-30 thomas imsg_init(&proc->iev.ibuf, proc->pipe[0]);
1700 85b37c72 2022-12-30 thomas log_debug("proc %s %s is on fd %d",
1701 85b37c72 2022-12-30 thomas gotd_proc_names[proc->type], proc->repo_path,
1702 85b37c72 2022-12-30 thomas proc->pipe[0]);
1703 85b37c72 2022-12-30 thomas proc->iev.handler = gotd_dispatch_repo_child;
1704 85b37c72 2022-12-30 thomas proc->iev.events = EV_READ;
1705 85b37c72 2022-12-30 thomas proc->iev.handler_arg = NULL;
1706 85b37c72 2022-12-30 thomas event_set(&proc->iev.ev, proc->iev.ibuf.fd, EV_READ,
1707 85b37c72 2022-12-30 thomas gotd_dispatch_repo_child, &proc->iev);
1708 85b37c72 2022-12-30 thomas gotd_imsg_event_add(&proc->iev);
1710 27b11d77 2023-01-14 thomas client->repo = proc;
1711 c669c489 2022-12-30 thomas return NULL;
1714 c669c489 2022-12-30 thomas static const struct got_error *
1715 c669c489 2022-12-30 thomas start_auth_child(struct gotd_client *client, int required_auth,
1716 c669c489 2022-12-30 thomas struct gotd_repo *repo, char *argv0, const char *confpath,
1717 c669c489 2022-12-30 thomas int daemonize, int verbosity)
1719 0bcde4c8 2022-12-30 thomas const struct got_error *err = NULL;
1720 c669c489 2022-12-30 thomas struct gotd_child_proc *proc;
1721 c669c489 2022-12-30 thomas struct gotd_imsg_auth iauth;
1723 febe25b7 2023-08-29 thomas int sock_flags = SOCK_STREAM|SOCK_NONBLOCK;
1725 febe25b7 2023-08-29 thomas #ifdef SOCK_CLOEXEC
1726 febe25b7 2023-08-29 thomas sock_flags |= SOCK_CLOEXEC;
1729 c669c489 2022-12-30 thomas memset(&iauth, 0, sizeof(iauth));
1731 0bcde4c8 2022-12-30 thomas fd = dup(client->fd);
1732 0bcde4c8 2022-12-30 thomas if (fd == -1)
1733 0bcde4c8 2022-12-30 thomas return got_error_from_errno("dup");
1735 c669c489 2022-12-30 thomas proc = calloc(1, sizeof(*proc));
1736 0bcde4c8 2022-12-30 thomas if (proc == NULL) {
1737 0bcde4c8 2022-12-30 thomas err = got_error_from_errno("calloc");
1738 0bcde4c8 2022-12-30 thomas close(fd);
1739 0bcde4c8 2022-12-30 thomas return err;
1742 2c8fb90b 2023-06-25 thomas TAILQ_INSERT_HEAD(&procs, proc, entry);
1743 2c8fb90b 2023-06-25 thomas evtimer_set(&proc->tmo, kill_proc_timeout, proc);
1745 c669c489 2022-12-30 thomas proc->type = PROC_AUTH;
1746 c669c489 2022-12-30 thomas if (strlcpy(proc->repo_name, repo->name,
1747 c669c489 2022-12-30 thomas sizeof(proc->repo_name)) >= sizeof(proc->repo_name))
1748 c669c489 2022-12-30 thomas fatalx("repository name too long: %s", repo->name);
1749 c669c489 2022-12-30 thomas log_debug("starting auth for uid %d repository %s",
1750 c669c489 2022-12-30 thomas client->euid, repo->name);
1751 fe6a8988 2023-01-08 thomas if (strlcpy(proc->repo_path, repo->path, sizeof(proc->repo_path)) >=
1752 fe6a8988 2023-01-08 thomas sizeof(proc->repo_path))
1753 fe6a8988 2023-01-08 thomas fatalx("repository path too long: %s", repo->path);
1754 febe25b7 2023-08-29 thomas if (realpath(repo->path, proc->repo_path) == NULL)
1755 febe25b7 2023-08-29 thomas fatal("%s", repo->path);
1756 febe25b7 2023-08-29 thomas if (socketpair(AF_UNIX, sock_flags,
1757 c669c489 2022-12-30 thomas PF_UNSPEC, proc->pipe) == -1)
1758 c669c489 2022-12-30 thomas fatal("socketpair");
1759 c669c489 2022-12-30 thomas proc->pid = start_child(proc->type, proc->repo_path, argv0,
1760 c669c489 2022-12-30 thomas confpath, proc->pipe[1], daemonize, verbosity);
1761 c669c489 2022-12-30 thomas imsg_init(&proc->iev.ibuf, proc->pipe[0]);
1762 c669c489 2022-12-30 thomas log_debug("proc %s %s is on fd %d",
1763 c669c489 2022-12-30 thomas gotd_proc_names[proc->type], proc->repo_path,
1764 c669c489 2022-12-30 thomas proc->pipe[0]);
1765 c669c489 2022-12-30 thomas proc->iev.handler = gotd_dispatch_auth_child;
1766 c669c489 2022-12-30 thomas proc->iev.events = EV_READ;
1767 c669c489 2022-12-30 thomas proc->iev.handler_arg = NULL;
1768 c669c489 2022-12-30 thomas event_set(&proc->iev.ev, proc->iev.ibuf.fd, EV_READ,
1769 c669c489 2022-12-30 thomas gotd_dispatch_auth_child, &proc->iev);
1770 c669c489 2022-12-30 thomas gotd_imsg_event_add(&proc->iev);
1772 c669c489 2022-12-30 thomas iauth.euid = client->euid;
1773 c669c489 2022-12-30 thomas iauth.egid = client->egid;
1774 c669c489 2022-12-30 thomas iauth.required_auth = required_auth;
1775 c669c489 2022-12-30 thomas iauth.client_id = client->id;
1776 c669c489 2022-12-30 thomas if (gotd_imsg_compose_event(&proc->iev, GOTD_IMSG_AUTHENTICATE,
1777 0bcde4c8 2022-12-30 thomas PROC_GOTD, fd, &iauth, sizeof(iauth)) == -1) {
1778 c669c489 2022-12-30 thomas log_warn("imsg compose AUTHENTICATE");
1779 0bcde4c8 2022-12-30 thomas close(fd);
1780 0bcde4c8 2022-12-30 thomas /* Let the auth_timeout handler tidy up. */
1783 c669c489 2022-12-30 thomas client->auth = proc;
1784 c669c489 2022-12-30 thomas client->required_auth = required_auth;
1785 85b37c72 2022-12-30 thomas return NULL;
1788 414e37cb 2022-12-30 thomas static void
1789 7fed8fa4 2023-06-22 thomas apply_unveil_repo_readonly(const char *repo_path, int need_tmpdir)
1791 7fed8fa4 2023-06-22 thomas if (need_tmpdir) {
1792 7fed8fa4 2023-06-22 thomas if (unveil(GOT_TMPDIR_STR, "rwc") == -1)
1793 7fed8fa4 2023-06-22 thomas fatal("unveil %s", GOT_TMPDIR_STR);
1796 414e37cb 2022-12-30 thomas if (unveil(repo_path, "r") == -1)
1797 414e37cb 2022-12-30 thomas fatal("unveil %s", repo_path);
1799 b942ab08 2022-12-30 thomas if (unveil(NULL, NULL) == -1)
1800 b942ab08 2022-12-30 thomas fatal("unveil");
1803 b942ab08 2022-12-30 thomas static void
1804 62ee7d94 2023-01-10 thomas apply_unveil_repo_readwrite(const char *repo_path)
1806 62ee7d94 2023-01-10 thomas if (unveil(repo_path, "rwc") == -1)
1807 62ee7d94 2023-01-10 thomas fatal("unveil %s", repo_path);
1809 62ee7d94 2023-01-10 thomas if (unveil(GOT_TMPDIR_STR, "rwc") == -1)
1810 62ee7d94 2023-01-10 thomas fatal("unveil %s", GOT_TMPDIR_STR);
1812 62ee7d94 2023-01-10 thomas if (unveil(NULL, NULL) == -1)
1813 62ee7d94 2023-01-10 thomas fatal("unveil");
1816 62ee7d94 2023-01-10 thomas static void
1817 b942ab08 2022-12-30 thomas apply_unveil_none(void)
1819 b942ab08 2022-12-30 thomas if (unveil("/", "") == -1)
1820 b942ab08 2022-12-30 thomas fatal("unveil");
1822 414e37cb 2022-12-30 thomas if (unveil(NULL, NULL) == -1)
1823 414e37cb 2022-12-30 thomas fatal("unveil");
1826 3efd8e31 2022-10-23 thomas static void
1827 62ee7d94 2023-01-10 thomas apply_unveil_selfexec(void)
1829 85b37c72 2022-12-30 thomas if (unveil(gotd.argv0, "x") == -1)
1830 85b37c72 2022-12-30 thomas fatal("unveil %s", gotd.argv0);
1832 3efd8e31 2022-10-23 thomas if (unveil(NULL, NULL) == -1)
1833 3efd8e31 2022-10-23 thomas fatal("unveil");
1836 1636f5f1 2023-08-29 thomas static void
1837 fec75208 2023-11-16 thomas set_max_datasize(void)
1839 fec75208 2023-11-16 thomas struct rlimit rl;
1841 fec75208 2023-11-16 thomas if (getrlimit(RLIMIT_DATA, &rl) != 0)
1844 fec75208 2023-11-16 thomas rl.rlim_cur = rl.rlim_max;
1845 fec75208 2023-11-16 thomas setrlimit(RLIMIT_DATA, &rl);
1849 3efd8e31 2022-10-23 thomas main(int argc, char **argv)
1851 3efd8e31 2022-10-23 thomas const struct got_error *error = NULL;
1852 3efd8e31 2022-10-23 thomas int ch, fd = -1, daemonize = 1, verbosity = 0, noaction = 0;
1853 3efd8e31 2022-10-23 thomas const char *confpath = GOTD_CONF_PATH;
1854 3efd8e31 2022-10-23 thomas char *argv0 = argv[0];
1855 3efd8e31 2022-10-23 thomas char title[2048];
1856 3efd8e31 2022-10-23 thomas struct passwd *pw = NULL;
1857 3efd8e31 2022-10-23 thomas char *repo_path = NULL;
1858 3efd8e31 2022-10-23 thomas enum gotd_procid proc_id = PROC_GOTD;
1859 2c8fb90b 2023-06-25 thomas struct event evsigint, evsigterm, evsighup, evsigusr1, evsigchld;
1860 3efd8e31 2022-10-23 thomas int *pack_fds = NULL, *temp_fds = NULL;
1861 6d7eb4f7 2023-04-04 thomas struct gotd_repo *repo = NULL;
1863 2c8fb90b 2023-06-25 thomas TAILQ_INIT(&procs);
1865 3efd8e31 2022-10-23 thomas log_init(1, LOG_DAEMON); /* Log to stderr until daemonized. */
1867 7fed8fa4 2023-06-22 thomas while ((ch = getopt(argc, argv, "Adf:LnP:RsSvW")) != -1) {
1868 3efd8e31 2022-10-23 thomas switch (ch) {
1869 c669c489 2022-12-30 thomas case 'A':
1870 c669c489 2022-12-30 thomas proc_id = PROC_AUTH;
1872 3efd8e31 2022-10-23 thomas case 'd':
1873 3efd8e31 2022-10-23 thomas daemonize = 0;
1875 3efd8e31 2022-10-23 thomas case 'f':
1876 3efd8e31 2022-10-23 thomas confpath = optarg;
1878 2b3d32a1 2022-12-30 thomas case 'L':
1879 2b3d32a1 2022-12-30 thomas proc_id = PROC_LISTEN;
1881 3efd8e31 2022-10-23 thomas case 'n':
1882 3efd8e31 2022-10-23 thomas noaction = 1;
1884 f7065961 2022-10-27 thomas case 'P':
1885 f7065961 2022-10-27 thomas repo_path = realpath(optarg, NULL);
1886 f7065961 2022-10-27 thomas if (repo_path == NULL)
1887 f7065961 2022-10-27 thomas fatal("realpath '%s'", optarg);
1889 3efd8e31 2022-10-23 thomas case 'R':
1890 3efd8e31 2022-10-23 thomas proc_id = PROC_REPO_READ;
1892 7fed8fa4 2023-06-22 thomas case 's':
1893 7fed8fa4 2023-06-22 thomas proc_id = PROC_SESSION_READ;
1895 62ee7d94 2023-01-10 thomas case 'S':
1896 7fed8fa4 2023-06-22 thomas proc_id = PROC_SESSION_WRITE;
1898 f7065961 2022-10-27 thomas case 'v':
1899 f7065961 2022-10-27 thomas if (verbosity < 3)
1900 f7065961 2022-10-27 thomas verbosity++;
1902 3efd8e31 2022-10-23 thomas case 'W':
1903 3efd8e31 2022-10-23 thomas proc_id = PROC_REPO_WRITE;
1905 3efd8e31 2022-10-23 thomas default:
1906 3efd8e31 2022-10-23 thomas usage();
1910 3efd8e31 2022-10-23 thomas argc -= optind;
1911 3efd8e31 2022-10-23 thomas argv += optind;
1913 3efd8e31 2022-10-23 thomas if (argc != 0)
1914 3efd8e31 2022-10-23 thomas usage();
1916 85b37c72 2022-12-30 thomas if (geteuid() && (proc_id == PROC_GOTD || proc_id == PROC_LISTEN))
1917 3efd8e31 2022-10-23 thomas fatalx("need root privileges");
1919 f3807fe5 2023-07-10 thomas if (parse_config(confpath, proc_id, &gotd) != 0)
1920 3efd8e31 2022-10-23 thomas return 1;
1922 3efd8e31 2022-10-23 thomas pw = getpwnam(gotd.user_name);
1923 3efd8e31 2022-10-23 thomas if (pw == NULL)
1924 3e7c54e1 2022-12-30 thomas fatalx("user %s not found", gotd.user_name);
1926 b4b04e88 2023-01-19 thomas if (pw->pw_uid == 0)
1927 b4b04e88 2023-01-19 thomas fatalx("cannot run %s as the superuser", getprogname());
1929 b4b04e88 2023-01-19 thomas if (noaction) {
1930 b4b04e88 2023-01-19 thomas fprintf(stderr, "configuration OK\n");
1931 3efd8e31 2022-10-23 thomas return 0;
1934 b4b04e88 2023-01-19 thomas gotd.argv0 = argv0;
1935 b4b04e88 2023-01-19 thomas gotd.daemonize = daemonize;
1936 b4b04e88 2023-01-19 thomas gotd.verbosity = verbosity;
1937 b4b04e88 2023-01-19 thomas gotd.confpath = confpath;
1939 b4b04e88 2023-01-19 thomas /* Require an absolute path in argv[0] for reliable re-exec. */
1940 b4b04e88 2023-01-19 thomas if (!got_path_is_absolute(argv0))
1941 b4b04e88 2023-01-19 thomas fatalx("bad path \"%s\": must be an absolute path", argv0);
1943 b4b04e88 2023-01-19 thomas log_init(daemonize ? 0 : 1, LOG_DAEMON);
1944 b4b04e88 2023-01-19 thomas log_setverbose(verbosity);
1946 1eec6e4e 2022-12-06 thomas if (proc_id == PROC_GOTD) {
1947 2b3d32a1 2022-12-30 thomas snprintf(title, sizeof(title), "%s", gotd_proc_names[proc_id]);
1948 2b3d32a1 2022-12-30 thomas arc4random_buf(&clients_hash_key, sizeof(clients_hash_key));
1949 2b3d32a1 2022-12-30 thomas if (daemonize && daemon(1, 0) == -1)
1950 2b3d32a1 2022-12-30 thomas fatal("daemon");
1951 1f1613cf 2023-01-23 thomas gotd.pid = getpid();
1952 1f1613cf 2023-01-23 thomas start_listener(argv0, confpath, daemonize, verbosity);
1953 2b3d32a1 2022-12-30 thomas } else if (proc_id == PROC_LISTEN) {
1954 2b3d32a1 2022-12-30 thomas snprintf(title, sizeof(title), "%s", gotd_proc_names[proc_id]);
1955 1eec6e4e 2022-12-06 thomas if (verbosity) {
1956 1eec6e4e 2022-12-06 thomas log_info("socket: %s", gotd.unix_socket_path);
1957 1eec6e4e 2022-12-06 thomas log_info("user: %s", pw->pw_name);
1960 3efd8e31 2022-10-23 thomas fd = unix_socket_listen(gotd.unix_socket_path, pw->pw_uid,
1961 f2fc8ce0 2023-01-06 thomas pw->pw_gid);
1962 3efd8e31 2022-10-23 thomas if (fd == -1) {
1963 3efd8e31 2022-10-23 thomas fatal("cannot listen on unix socket %s",
1964 3efd8e31 2022-10-23 thomas gotd.unix_socket_path);
1966 c669c489 2022-12-30 thomas } else if (proc_id == PROC_AUTH) {
1967 c669c489 2022-12-30 thomas snprintf(title, sizeof(title), "%s %s",
1968 c669c489 2022-12-30 thomas gotd_proc_names[proc_id], repo_path);
1969 62ee7d94 2023-01-10 thomas } else if (proc_id == PROC_REPO_READ || proc_id == PROC_REPO_WRITE ||
1970 7fed8fa4 2023-06-22 thomas proc_id == PROC_SESSION_READ || proc_id == PROC_SESSION_WRITE) {
1971 3efd8e31 2022-10-23 thomas error = got_repo_pack_fds_open(&pack_fds);
1972 3efd8e31 2022-10-23 thomas if (error != NULL)
1973 3efd8e31 2022-10-23 thomas fatalx("cannot open pack tempfiles: %s", error->msg);
1974 3efd8e31 2022-10-23 thomas error = got_repo_temp_fds_open(&temp_fds);
1975 3efd8e31 2022-10-23 thomas if (error != NULL)
1976 3efd8e31 2022-10-23 thomas fatalx("cannot open pack tempfiles: %s", error->msg);
1977 3efd8e31 2022-10-23 thomas if (repo_path == NULL)
1978 3efd8e31 2022-10-23 thomas fatalx("repository path not specified");
1979 3efd8e31 2022-10-23 thomas snprintf(title, sizeof(title), "%s %s",
1980 3efd8e31 2022-10-23 thomas gotd_proc_names[proc_id], repo_path);
1982 3efd8e31 2022-10-23 thomas fatal("invalid process id %d", proc_id);
1984 3efd8e31 2022-10-23 thomas setproctitle("%s", title);
1985 3efd8e31 2022-10-23 thomas log_procinit(title);
1987 1636f5f1 2023-08-29 thomas if (proc_id != PROC_GOTD && proc_id != PROC_LISTEN &&
1988 1636f5f1 2023-08-29 thomas proc_id != PROC_REPO_READ && proc_id != PROC_REPO_WRITE) {
1989 1636f5f1 2023-08-29 thomas /* Drop root privileges. */
1990 1636f5f1 2023-08-29 thomas if (setgid(pw->pw_gid) == -1)
1991 1636f5f1 2023-08-29 thomas fatal("setgid %d failed", pw->pw_gid);
1992 1636f5f1 2023-08-29 thomas if (setuid(pw->pw_uid) == -1)
1993 1636f5f1 2023-08-29 thomas fatal("setuid %d failed", pw->pw_uid);
1996 3efd8e31 2022-10-23 thomas event_init();
1998 3efd8e31 2022-10-23 thomas switch (proc_id) {
1999 3efd8e31 2022-10-23 thomas case PROC_GOTD:
2000 3efd8e31 2022-10-23 thomas #ifndef PROFILE
2001 62ee7d94 2023-01-10 thomas /* "exec" promise will be limited to argv[0] via unveil(2). */
2002 62ee7d94 2023-01-10 thomas if (pledge("stdio proc exec sendfd recvfd unveil", NULL) == -1)
2003 3efd8e31 2022-10-23 thomas err(1, "pledge");
2006 2b3d32a1 2022-12-30 thomas case PROC_LISTEN:
2007 2b3d32a1 2022-12-30 thomas #ifndef PROFILE
2008 d4940d40 2023-01-06 thomas if (pledge("stdio sendfd unix unveil", NULL) == -1)
2009 2b3d32a1 2022-12-30 thomas err(1, "pledge");
2012 d4940d40 2023-01-06 thomas * Ensure that AF_UNIX bind(2) cannot be used with any other
2013 d4940d40 2023-01-06 thomas * sockets by revoking all filesystem access via unveil(2).
2015 d4940d40 2023-01-06 thomas apply_unveil_none();
2017 1636f5f1 2023-08-29 thomas enter_chroot(GOTD_EMPTY_PATH);
2018 1636f5f1 2023-08-29 thomas drop_privs(pw);
2020 0781db0e 2023-01-06 thomas listen_main(title, fd, gotd.connection_limits,
2021 0781db0e 2023-01-06 thomas gotd.nconnection_limits);
2022 2b3d32a1 2022-12-30 thomas /* NOTREACHED */
2024 c669c489 2022-12-30 thomas case PROC_AUTH:
2025 c669c489 2022-12-30 thomas #ifndef PROFILE
2026 b942ab08 2022-12-30 thomas if (pledge("stdio getpw recvfd unix unveil", NULL) == -1)
2027 c669c489 2022-12-30 thomas err(1, "pledge");
2030 b942ab08 2022-12-30 thomas * We need the "unix" pledge promise for getpeername(2) only.
2031 b942ab08 2022-12-30 thomas * Ensure that AF_UNIX bind(2) cannot be used by revoking all
2032 b942ab08 2022-12-30 thomas * filesystem access via unveil(2). Access to password database
2033 b942ab08 2022-12-30 thomas * files will still work since "getpw" bypasses unveil(2).
2035 b942ab08 2022-12-30 thomas apply_unveil_none();
2037 c669c489 2022-12-30 thomas auth_main(title, &gotd.repos, repo_path);
2038 c669c489 2022-12-30 thomas /* NOTREACHED */
2040 7fed8fa4 2023-06-22 thomas case PROC_SESSION_READ:
2041 7fed8fa4 2023-06-22 thomas case PROC_SESSION_WRITE:
2042 62ee7d94 2023-01-10 thomas #ifndef PROFILE
2044 62ee7d94 2023-01-10 thomas * The "recvfd" promise is only needed during setup and
2045 62ee7d94 2023-01-10 thomas * will be removed in a later pledge(2) call.
2047 62ee7d94 2023-01-10 thomas if (pledge("stdio rpath wpath cpath recvfd sendfd fattr flock "
2048 62ee7d94 2023-01-10 thomas "unveil", NULL) == -1)
2049 62ee7d94 2023-01-10 thomas err(1, "pledge");
2051 7fed8fa4 2023-06-22 thomas if (proc_id == PROC_SESSION_READ)
2052 7fed8fa4 2023-06-22 thomas apply_unveil_repo_readonly(repo_path, 1);
2054 7fed8fa4 2023-06-22 thomas apply_unveil_repo_readwrite(repo_path);
2056 62ee7d94 2023-01-10 thomas session_main(title, repo_path, pack_fds, temp_fds,
2057 7fed8fa4 2023-06-22 thomas &gotd.request_timeout, proc_id);
2058 62ee7d94 2023-01-10 thomas /* NOTREACHED */
2060 3efd8e31 2022-10-23 thomas case PROC_REPO_READ:
2061 fec75208 2023-11-16 thomas set_max_datasize();
2062 3efd8e31 2022-10-23 thomas #ifndef PROFILE
2063 414e37cb 2022-12-30 thomas if (pledge("stdio rpath recvfd unveil", NULL) == -1)
2064 3efd8e31 2022-10-23 thomas err(1, "pledge");
2066 7fed8fa4 2023-06-22 thomas apply_unveil_repo_readonly(repo_path, 0);
2068 1636f5f1 2023-08-29 thomas if (enter_chroot(repo_path)) {
2069 1636f5f1 2023-08-29 thomas log_info("change repo path %s", repo_path);
2070 1636f5f1 2023-08-29 thomas free(repo_path);
2071 1636f5f1 2023-08-29 thomas repo_path = strdup("/");
2072 1636f5f1 2023-08-29 thomas if (repo_path == NULL)
2073 1636f5f1 2023-08-29 thomas fatal("strdup");
2074 1636f5f1 2023-08-29 thomas log_info("repo path is now %s", repo_path);
2076 1636f5f1 2023-08-29 thomas drop_privs(pw);
2078 414e37cb 2022-12-30 thomas repo_read_main(title, repo_path, pack_fds, temp_fds);
2079 3efd8e31 2022-10-23 thomas /* NOTREACHED */
2080 3efd8e31 2022-10-23 thomas exit(0);
2081 3efd8e31 2022-10-23 thomas case PROC_REPO_WRITE:
2082 fec75208 2023-11-16 thomas set_max_datasize();
2083 3efd8e31 2022-10-23 thomas #ifndef PROFILE
2084 414e37cb 2022-12-30 thomas if (pledge("stdio rpath recvfd unveil", NULL) == -1)
2085 3efd8e31 2022-10-23 thomas err(1, "pledge");
2087 7fed8fa4 2023-06-22 thomas apply_unveil_repo_readonly(repo_path, 0);
2088 6d7eb4f7 2023-04-04 thomas repo = gotd_find_repo_by_path(repo_path, &gotd);
2089 6d7eb4f7 2023-04-04 thomas if (repo == NULL)
2090 6d7eb4f7 2023-04-04 thomas fatalx("no repository for path %s", repo_path);
2092 1636f5f1 2023-08-29 thomas if (enter_chroot(repo_path)) {
2093 1636f5f1 2023-08-29 thomas free(repo_path);
2094 1636f5f1 2023-08-29 thomas repo_path = strdup("/");
2095 1636f5f1 2023-08-29 thomas if (repo_path == NULL)
2096 1636f5f1 2023-08-29 thomas fatal("strdup");
2098 1636f5f1 2023-08-29 thomas drop_privs(pw);
2100 6d7eb4f7 2023-04-04 thomas repo_write_main(title, repo_path, pack_fds, temp_fds,
2101 6d7eb4f7 2023-04-04 thomas &repo->protected_tag_namespaces,
2102 6d7eb4f7 2023-04-04 thomas &repo->protected_branch_namespaces,
2103 6d7eb4f7 2023-04-04 thomas &repo->protected_branches);
2104 3efd8e31 2022-10-23 thomas /* NOTREACHED */
2105 3efd8e31 2022-10-23 thomas exit(0);
2106 3efd8e31 2022-10-23 thomas default:
2107 3efd8e31 2022-10-23 thomas fatal("invalid process id %d", proc_id);
2110 3efd8e31 2022-10-23 thomas if (proc_id != PROC_GOTD)
2111 3efd8e31 2022-10-23 thomas fatal("invalid process id %d", proc_id);
2113 2c8fb90b 2023-06-25 thomas evtimer_set(&gotd.listen_proc->tmo, kill_proc_timeout,
2114 2c8fb90b 2023-06-25 thomas gotd.listen_proc);
2116 62ee7d94 2023-01-10 thomas apply_unveil_selfexec();
2118 3efd8e31 2022-10-23 thomas signal_set(&evsigint, SIGINT, gotd_sighdlr, NULL);
2119 3efd8e31 2022-10-23 thomas signal_set(&evsigterm, SIGTERM, gotd_sighdlr, NULL);
2120 3efd8e31 2022-10-23 thomas signal_set(&evsighup, SIGHUP, gotd_sighdlr, NULL);
2121 3efd8e31 2022-10-23 thomas signal_set(&evsigusr1, SIGUSR1, gotd_sighdlr, NULL);
2122 2c8fb90b 2023-06-25 thomas signal_set(&evsigchld, SIGCHLD, gotd_sighdlr, NULL);
2123 3efd8e31 2022-10-23 thomas signal(SIGPIPE, SIG_IGN);
2125 3efd8e31 2022-10-23 thomas signal_add(&evsigint, NULL);
2126 3efd8e31 2022-10-23 thomas signal_add(&evsigterm, NULL);
2127 3efd8e31 2022-10-23 thomas signal_add(&evsighup, NULL);
2128 3efd8e31 2022-10-23 thomas signal_add(&evsigusr1, NULL);
2129 2c8fb90b 2023-06-25 thomas signal_add(&evsigchld, NULL);
2131 78943464 2023-06-22 thomas gotd_imsg_event_add(&gotd.listen_proc->iev);
2133 3efd8e31 2022-10-23 thomas event_dispatch();
2135 3efd8e31 2022-10-23 thomas free(repo_path);
2136 62ee7d94 2023-01-10 thomas gotd_shutdown();
2138 3efd8e31 2022-10-23 thomas return 0;
