2 fb1a36c0 2022-01-09 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3 fb1a36c0 2022-01-09 op * Copyright (c) 2018 Florian Obser <florian@openbsd.org>
4 fb1a36c0 2022-01-09 op * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
5 fb1a36c0 2022-01-09 op * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
6 fb1a36c0 2022-01-09 op * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
8 fb1a36c0 2022-01-09 op * Permission to use, copy, modify, and distribute this software for any
9 fb1a36c0 2022-01-09 op * purpose with or without fee is hereby granted, provided that the above
10 fb1a36c0 2022-01-09 op * copyright notice and this permission notice appear in all copies.
12 fb1a36c0 2022-01-09 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 fb1a36c0 2022-01-09 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 fb1a36c0 2022-01-09 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 fb1a36c0 2022-01-09 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 fb1a36c0 2022-01-09 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 fb1a36c0 2022-01-09 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 fb1a36c0 2022-01-09 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 fb1a36c0 2022-01-09 op #include <sys/socket.h>
22 fb1a36c0 2022-01-09 op #include <sys/types.h>
23 fb1a36c0 2022-01-09 op #include <sys/queue.h>
24 fb1a36c0 2022-01-09 op #include <sys/uio.h>
25 fb1a36c0 2022-01-09 op #include <sys/wait.h>
27 fb1a36c0 2022-01-09 op #include <arpa/inet.h>
28 fb1a36c0 2022-01-09 op #include <netinet/in.h>
30 fb1a36c0 2022-01-09 op #include <errno.h>
31 fb1a36c0 2022-01-09 op #include <event.h>
32 fb1a36c0 2022-01-09 op #include <fcntl.h>
33 fb1a36c0 2022-01-09 op #include <pwd.h>
34 fb1a36c0 2022-01-09 op #include <signal.h>
35 fb1a36c0 2022-01-09 op #include <stdint.h>
36 fb1a36c0 2022-01-09 op #include <stdio.h>
37 fb1a36c0 2022-01-09 op #include <stdlib.h>
38 fb1a36c0 2022-01-09 op #include <string.h>
39 fb1a36c0 2022-01-09 op #include <syslog.h>
40 fb1a36c0 2022-01-09 op #include <unistd.h>
41 fb1a36c0 2022-01-09 op #include <imsg.h>
43 fb1a36c0 2022-01-09 op #include "client.h"
44 fb1a36c0 2022-01-09 op #include "control.h"
45 fb1a36c0 2022-01-09 op #include "kamid.h"
46 fb1a36c0 2022-01-09 op #include "listener.h"
47 fb1a36c0 2022-01-09 op #include "log.h"
48 fb1a36c0 2022-01-09 op #include "sandbox.h"
49 fb1a36c0 2022-01-09 op #include "table.h"
50 fb1a36c0 2022-01-09 op #include "utils.h"
52 fb1a36c0 2022-01-09 op enum kd_process {
54 fb1a36c0 2022-01-09 op PROC_LISTENER,
55 fb1a36c0 2022-01-09 op PROC_CLIENTCONN,
58 fb1a36c0 2022-01-09 op const char *saved_argv0;
59 fb1a36c0 2022-01-09 op static int debug, nflag;
62 fb1a36c0 2022-01-09 op __dead void usage(void);
64 fb1a36c0 2022-01-09 op void main_sig_handler(int, short, void *);
65 fb1a36c0 2022-01-09 op void main_dispatch_listener(int, short, void *);
66 fb1a36c0 2022-01-09 op int main_reload(void);
67 fb1a36c0 2022-01-09 op int main_imsg_send_config(struct kd_conf *);
68 fb1a36c0 2022-01-09 op void main_dispatch_listener(int, short, void *);
69 fb1a36c0 2022-01-09 op __dead void main_shutdown(void);
71 fb1a36c0 2022-01-09 op static pid_t start_child(enum kd_process, int, int, int);
73 fb1a36c0 2022-01-09 op struct kd_conf *main_conf;
74 fb1a36c0 2022-01-09 op static struct imsgev *iev_listener;
75 fb1a36c0 2022-01-09 op const char *conffile;
76 fb1a36c0 2022-01-09 op pid_t listener_pid;
77 fb1a36c0 2022-01-09 op uint32_t cmd_opts;
82 fb1a36c0 2022-01-09 op fprintf(stderr, "usage: %s [-dnv] [-f file] [-s socket]\n",
83 fb1a36c0 2022-01-09 op getprogname());
88 fb1a36c0 2022-01-09 op main(int argc, char **argv)
90 fb1a36c0 2022-01-09 op struct event ev_sigint, ev_sigterm, ev_sighup;
92 fb1a36c0 2022-01-09 op int listener_flag = 0, client_flag = 0;
93 fb1a36c0 2022-01-09 op int pipe_main2listener[2];
94 fb1a36c0 2022-01-09 op int control_fd;
95 fb1a36c0 2022-01-09 op const char *csock;
97 fb1a36c0 2022-01-09 op conffile = KD_CONF_FILE;
98 fb1a36c0 2022-01-09 op csock = KD_SOCKET;
100 fb1a36c0 2022-01-09 op log_init(1, LOG_DAEMON); /* Log to stderr until deamonized. */
101 fb1a36c0 2022-01-09 op log_setverbose(1);
103 fb1a36c0 2022-01-09 op saved_argv0 = argv[0];
104 fb1a36c0 2022-01-09 op if (saved_argv0 == NULL)
105 fb1a36c0 2022-01-09 op saved_argv0 = "kamid";
107 fb1a36c0 2022-01-09 op while ((ch = getopt(argc, argv, "D:df:nsT:v")) != -1) {
108 fb1a36c0 2022-01-09 op switch (ch) {
110 fb1a36c0 2022-01-09 op if (cmdline_symset(optarg) == -1)
111 fb1a36c0 2022-01-09 op log_warnx("could not parse macro definition %s",
118 fb1a36c0 2022-01-09 op conffile = optarg;
124 fb1a36c0 2022-01-09 op csock = optarg;
127 fb1a36c0 2022-01-09 op switch (*optarg) {
129 fb1a36c0 2022-01-09 op client_flag = 1;
132 fb1a36c0 2022-01-09 op listener_flag = 1;
135 fb1a36c0 2022-01-09 op fatalx("invalid process spec %c", *optarg);
146 fb1a36c0 2022-01-09 op argc -= optind;
147 fb1a36c0 2022-01-09 op argv += optind;
148 fb1a36c0 2022-01-09 op if (argc > 0 || (listener_flag && client_flag))
151 fb1a36c0 2022-01-09 op if (client_flag)
152 fb1a36c0 2022-01-09 op client(debug, verbose);
153 fb1a36c0 2022-01-09 op else if (listener_flag)
154 fb1a36c0 2022-01-09 op listener(debug, verbose);
156 fb1a36c0 2022-01-09 op if ((main_conf = parse_config(conffile)) == NULL)
160 fb1a36c0 2022-01-09 op fprintf(stderr, "configuration OK\n");
164 fb1a36c0 2022-01-09 op /* Check for root privileges. */
165 fb1a36c0 2022-01-09 op if (geteuid())
166 fb1a36c0 2022-01-09 op fatalx("need root privileges");
168 fb1a36c0 2022-01-09 op /* Check for assigned daemon user. */
169 fb1a36c0 2022-01-09 op if (getpwnam(KD_USER) == NULL)
170 fb1a36c0 2022-01-09 op fatalx("unknown user %s", KD_USER);
172 fb1a36c0 2022-01-09 op log_init(debug, LOG_DAEMON);
173 fb1a36c0 2022-01-09 op log_setverbose(verbose);
176 fb1a36c0 2022-01-09 op daemon(1, 0);
178 fb1a36c0 2022-01-09 op log_info("startup");
180 fb1a36c0 2022-01-09 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
181 fb1a36c0 2022-01-09 op PF_UNSPEC, pipe_main2listener) == -1)
182 fb1a36c0 2022-01-09 op fatal("main2listener socketpair");
184 fb1a36c0 2022-01-09 op /* Start children. */
185 fb1a36c0 2022-01-09 op listener_pid = start_child(PROC_LISTENER, pipe_main2listener[1],
186 fb1a36c0 2022-01-09 op debug, verbose);
188 fb1a36c0 2022-01-09 op log_procinit("main");
190 fb1a36c0 2022-01-09 op event_init();
192 fb1a36c0 2022-01-09 op /* Setup signal handler */
193 fb1a36c0 2022-01-09 op signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
194 fb1a36c0 2022-01-09 op signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
195 fb1a36c0 2022-01-09 op signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
197 fb1a36c0 2022-01-09 op signal_add(&ev_sigint, NULL);
198 fb1a36c0 2022-01-09 op signal_add(&ev_sigterm, NULL);
199 fb1a36c0 2022-01-09 op signal_add(&ev_sighup, NULL);
201 fb1a36c0 2022-01-09 op signal(SIGCHLD, SIG_IGN);
202 fb1a36c0 2022-01-09 op signal(SIGPIPE, SIG_IGN);
204 fb1a36c0 2022-01-09 op if ((iev_listener = malloc(sizeof(*iev_listener))) == NULL)
206 fb1a36c0 2022-01-09 op imsg_init(&iev_listener->ibuf, pipe_main2listener[0]);
207 fb1a36c0 2022-01-09 op iev_listener->handler = main_dispatch_listener;
209 fb1a36c0 2022-01-09 op /* Setup event handlers for pipes to listener. */
210 fb1a36c0 2022-01-09 op iev_listener->events = EV_READ;
211 fb1a36c0 2022-01-09 op event_set(&iev_listener->ev, iev_listener->ibuf.fd,
212 fb1a36c0 2022-01-09 op iev_listener->events, iev_listener->handler, iev_listener);
213 fb1a36c0 2022-01-09 op event_add(&iev_listener->ev, NULL);
215 fb1a36c0 2022-01-09 op if ((control_fd = control_init(csock)) == -1)
216 fb1a36c0 2022-01-09 op fatalx("control socket setup failed");
218 fb1a36c0 2022-01-09 op main_imsg_compose_listener(IMSG_CONTROLFD, control_fd, 0,
220 fb1a36c0 2022-01-09 op main_imsg_send_config(main_conf);
222 fb1a36c0 2022-01-09 op sandbox_main();
224 fb1a36c0 2022-01-09 op event_dispatch();
226 fb1a36c0 2022-01-09 op main_shutdown();
231 fb1a36c0 2022-01-09 op main_sig_handler(int sig, short event, void *arg)
234 fb1a36c0 2022-01-09 op * Normal signal handler rules don't apply because libevent
235 fb1a36c0 2022-01-09 op * decouples for us.
238 fb1a36c0 2022-01-09 op switch (sig) {
239 fb1a36c0 2022-01-09 op case SIGTERM:
241 fb1a36c0 2022-01-09 op main_shutdown();
244 fb1a36c0 2022-01-09 op if (main_reload() == -1)
245 fb1a36c0 2022-01-09 op log_warnx("configuration reload failed");
247 fb1a36c0 2022-01-09 op log_debug("configuration reloaded");
250 fb1a36c0 2022-01-09 op fatalx("unexpected signal %d", sig);
254 fb1a36c0 2022-01-09 op static inline struct table *
255 fb1a36c0 2022-01-09 op auth_table_by_id(uint32_t id)
257 fb1a36c0 2022-01-09 op struct kd_listen_conf *listen;
259 fb1a36c0 2022-01-09 op STAILQ_FOREACH(listen, &main_conf->listen_head, entry) {
260 fb1a36c0 2022-01-09 op if (listen->id == id)
261 fb1a36c0 2022-01-09 op return listen->auth_table;
267 fb1a36c0 2022-01-09 op static inline struct table *
268 fb1a36c0 2022-01-09 op virtual_table_by_id(uint32_t id)
270 fb1a36c0 2022-01-09 op struct kd_listen_conf *listen;
272 fb1a36c0 2022-01-09 op STAILQ_FOREACH(listen, &main_conf->listen_head, entry) {
273 fb1a36c0 2022-01-09 op if (listen->id == id)
274 fb1a36c0 2022-01-09 op return listen->virtual_table;
280 fb1a36c0 2022-01-09 op static inline struct table *
281 fb1a36c0 2022-01-09 op userdata_table_by_id(uint32_t id)
283 fb1a36c0 2022-01-09 op struct kd_listen_conf *listen;
285 fb1a36c0 2022-01-09 op STAILQ_FOREACH(listen, &main_conf->listen_head, entry) {
286 fb1a36c0 2022-01-09 op if (listen->id == id)
287 fb1a36c0 2022-01-09 op return listen->userdata_table;
293 fb1a36c0 2022-01-09 op static inline void
294 fb1a36c0 2022-01-09 op do_auth_tls(struct imsg *imsg)
296 fb1a36c0 2022-01-09 op char *username = NULL, *user = NULL, *home = NULL, *local_user;
297 fb1a36c0 2022-01-09 op struct passwd *pw;
298 fb1a36c0 2022-01-09 op struct table *auth, *virt, *userdata;
299 fb1a36c0 2022-01-09 op struct kd_auth_req kauth;
300 fb1a36c0 2022-01-09 op int p[2], free_home = 1;
302 fb1a36c0 2022-01-09 op if (sizeof(kauth) != IMSG_DATA_SIZE(*imsg))
303 fb1a36c0 2022-01-09 op fatal("wrong size for IMSG_AUTH_TLS: "
304 fb1a36c0 2022-01-09 op "got %lu; want %lu", IMSG_DATA_SIZE(*imsg),
305 fb1a36c0 2022-01-09 op sizeof(kauth));
306 fb1a36c0 2022-01-09 op memcpy(&kauth, imsg->data, sizeof(kauth));
308 fb1a36c0 2022-01-09 op if (memmem(kauth.hash, sizeof(kauth.hash), "", 1) == NULL)
309 fb1a36c0 2022-01-09 op fatal("non NUL-terminated hash received");
311 fb1a36c0 2022-01-09 op log_debug("tls id=%u hash=%s", kauth.listen_id, kauth.hash);
313 fb1a36c0 2022-01-09 op if ((auth = auth_table_by_id(kauth.listen_id)) == NULL)
314 fb1a36c0 2022-01-09 op fatal("request for invalid listener id %d", imsg->hdr.pid);
316 fb1a36c0 2022-01-09 op virt = virtual_table_by_id(kauth.listen_id);
317 fb1a36c0 2022-01-09 op userdata = userdata_table_by_id(kauth.listen_id);
319 fb1a36c0 2022-01-09 op if (table_lookup(auth, kauth.hash, &username) == -1) {
320 fb1a36c0 2022-01-09 op log_warnx("login failed for hash %s", kauth.hash);
324 fb1a36c0 2022-01-09 op if (virt != NULL && table_lookup(virt, username, &user) == -1) {
325 fb1a36c0 2022-01-09 op log_warnx("virtual lookup failed for user %s", username);
329 fb1a36c0 2022-01-09 op /* the local user */
330 fb1a36c0 2022-01-09 op local_user = user != NULL ? user : username;
332 fb1a36c0 2022-01-09 op if (user != NULL)
333 fb1a36c0 2022-01-09 op log_debug("virtual user %s matched local user %s",
334 fb1a36c0 2022-01-09 op username, user);
336 fb1a36c0 2022-01-09 op log_debug("matched local user %s", username);
338 fb1a36c0 2022-01-09 op if (userdata != NULL && table_lookup(userdata, username, &home)
340 fb1a36c0 2022-01-09 op log_warnx("userdata lookup failed for user %s", username);
342 fb1a36c0 2022-01-09 op } else if (userdata == NULL) {
343 fb1a36c0 2022-01-09 op if ((pw = getpwnam(local_user)) == NULL) {
344 fb1a36c0 2022-01-09 op log_warnx("getpwnam(%s) failed", local_user);
348 fb1a36c0 2022-01-09 op free_home = 0;
349 fb1a36c0 2022-01-09 op home = pw->pw_dir;
352 fb1a36c0 2022-01-09 op if (user != NULL)
353 fb1a36c0 2022-01-09 op log_debug("matched home %s for virtual user %s",
354 fb1a36c0 2022-01-09 op home, username);
356 fb1a36c0 2022-01-09 op log_debug("matched home %s for local user %s",
357 fb1a36c0 2022-01-09 op home, username);
359 fb1a36c0 2022-01-09 op if (socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK,
360 fb1a36c0 2022-01-09 op PF_UNSPEC, p) == -1)
361 fb1a36c0 2022-01-09 op fatal("socketpair");
363 fb1a36c0 2022-01-09 op start_child(PROC_CLIENTCONN, p[1], debug, verbose);
365 fb1a36c0 2022-01-09 op main_imsg_compose_listener(IMSG_AUTH, p[0], imsg->hdr.peerid,
366 fb1a36c0 2022-01-09 op local_user, strlen(local_user)+1);
367 fb1a36c0 2022-01-09 op main_imsg_compose_listener(IMSG_AUTH_DIR, -1, imsg->hdr.peerid,
368 fb1a36c0 2022-01-09 op home, strlen(home)+1);
370 fb1a36c0 2022-01-09 op free(username);
372 fb1a36c0 2022-01-09 op if (free_home)
377 fb1a36c0 2022-01-09 op free(username);
379 fb1a36c0 2022-01-09 op if (free_home)
381 fb1a36c0 2022-01-09 op main_imsg_compose_listener(IMSG_AUTH, -1, imsg->hdr.peerid,
386 fb1a36c0 2022-01-09 op main_dispatch_listener(int fd, short event, void *d)
388 fb1a36c0 2022-01-09 op struct imsgev *iev = d;
389 fb1a36c0 2022-01-09 op struct imsgbuf *ibuf;
390 fb1a36c0 2022-01-09 op struct imsg imsg;
392 fb1a36c0 2022-01-09 op int shut = 0;
394 fb1a36c0 2022-01-09 op ibuf = &iev->ibuf;
396 fb1a36c0 2022-01-09 op if (event & EV_READ) {
397 fb1a36c0 2022-01-09 op if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
398 fb1a36c0 2022-01-09 op fatal("imsg_read error");
399 fb1a36c0 2022-01-09 op if (n == 0) /* Connection closed. */
402 fb1a36c0 2022-01-09 op if (event & EV_WRITE) {
403 fb1a36c0 2022-01-09 op if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
404 fb1a36c0 2022-01-09 op fatal("msgbuf_write");
405 fb1a36c0 2022-01-09 op if (n == 0) /* Connection closed. */
410 fb1a36c0 2022-01-09 op if ((n = imsg_get(ibuf, &imsg)) == -1)
411 fb1a36c0 2022-01-09 op fatal("imsg_get");
412 fb1a36c0 2022-01-09 op if (n == 0) /* No more messages. */
415 fb1a36c0 2022-01-09 op switch (imsg.hdr.type) {
416 fb1a36c0 2022-01-09 op case IMSG_AUTH_TLS:
417 fb1a36c0 2022-01-09 op do_auth_tls(&imsg);
420 fb1a36c0 2022-01-09 op log_debug("%s: error handling imsg %d", __func__,
421 fb1a36c0 2022-01-09 op imsg.hdr.type);
424 fb1a36c0 2022-01-09 op imsg_free(&imsg);
427 fb1a36c0 2022-01-09 op imsg_event_add(iev);
429 fb1a36c0 2022-01-09 op /* This pipe is dead. Remove its event handler. */
430 fb1a36c0 2022-01-09 op event_del(&iev->ev);
431 fb1a36c0 2022-01-09 op event_loopexit(NULL);
436 fb1a36c0 2022-01-09 op main_reload(void)
438 fb1a36c0 2022-01-09 op struct kd_conf *xconf;
440 fb1a36c0 2022-01-09 op if ((xconf = parse_config(conffile)) == NULL)
443 fb1a36c0 2022-01-09 op if (main_imsg_send_config(xconf) == -1)
446 fb1a36c0 2022-01-09 op merge_config(main_conf, xconf);
451 fb1a36c0 2022-01-09 op static inline int
452 fb1a36c0 2022-01-09 op make_socket_for(struct kd_listen_conf *l)
454 fb1a36c0 2022-01-09 op struct sockaddr_in addr4;
458 fb1a36c0 2022-01-09 op memset(&addr4, 0, sizeof(addr4));
459 fb1a36c0 2022-01-09 op addr4.sin_family = AF_INET;
460 fb1a36c0 2022-01-09 op addr4.sin_port = htons(l->port);
461 fb1a36c0 2022-01-09 op addr4.sin_addr.s_addr = INADDR_ANY;
463 fb1a36c0 2022-01-09 op if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
464 fb1a36c0 2022-01-09 op fatal("socket");
467 fb1a36c0 2022-01-09 op if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) == -1)
468 fb1a36c0 2022-01-09 op fatal("setsockopt(SO_REUSEADDR)");
471 fb1a36c0 2022-01-09 op if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &v, sizeof(v)) == -1)
472 fb1a36c0 2022-01-09 op fatal("setsockopt(SO_REUSEPORT)");
474 fb1a36c0 2022-01-09 op len = sizeof(addr4);
475 fb1a36c0 2022-01-09 op if (bind(fd, (struct sockaddr *)&addr4, len) == -1)
476 fb1a36c0 2022-01-09 op fatal("bind(%s, %d)", l->iface, l->port);
478 fb1a36c0 2022-01-09 op if (listen(fd, 16) == -1)
479 fb1a36c0 2022-01-09 op fatal("l(%s, %d)", l->iface, l->port);
485 fb1a36c0 2022-01-09 op main_imsg_send_config(struct kd_conf *xconf)
487 fb1a36c0 2022-01-09 op struct kd_pki_conf *pki;
488 fb1a36c0 2022-01-09 op struct kd_listen_conf *listen;
490 fb1a36c0 2022-01-09 op #define SEND(type, fd, data, len) do { \
491 fb1a36c0 2022-01-09 op if (main_imsg_compose_listener(type, fd, 0, data, len) \
496 fb1a36c0 2022-01-09 op /* Send fixed part of config to children. */
497 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_CONF, -1, xconf, sizeof(*xconf));
499 fb1a36c0 2022-01-09 op STAILQ_FOREACH(pki, &xconf->pki_head, entry) {
500 fb1a36c0 2022-01-09 op log_debug("sending pki %s", pki->name);
501 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_PKI, -1, pki->name, sizeof(pki->name));
502 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_PKI_CERT, -1, pki->cert, pki->certlen);
503 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_PKI_KEY, -1, pki->key, pki->keylen);
506 fb1a36c0 2022-01-09 op STAILQ_FOREACH(listen, &xconf->listen_head, entry) {
507 fb1a36c0 2022-01-09 op log_debug("sending listen on port %d", listen->port);
508 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_LISTEN, make_socket_for(listen), listen,
509 fb1a36c0 2022-01-09 op sizeof(*listen));
512 fb1a36c0 2022-01-09 op SEND(IMSG_RECONF_END, -1, NULL, 0);
519 fb1a36c0 2022-01-09 op merge_config(struct kd_conf *conf, struct kd_conf *xconf)
521 fb1a36c0 2022-01-09 op /* do stuff... */
526 fb1a36c0 2022-01-09 op struct kd_conf *
527 fb1a36c0 2022-01-09 op config_new_empty(void)
529 fb1a36c0 2022-01-09 op struct kd_conf *xconf;
531 fb1a36c0 2022-01-09 op if ((xconf = calloc(1, sizeof(*xconf))) == NULL)
534 fb1a36c0 2022-01-09 op /* set default values */
536 fb1a36c0 2022-01-09 op return xconf;
540 fb1a36c0 2022-01-09 op config_clear(struct kd_conf *conf)
542 fb1a36c0 2022-01-09 op struct kd_conf *xconf;
544 fb1a36c0 2022-01-09 op /* Merge current config with an empty one. */
545 fb1a36c0 2022-01-09 op xconf = config_new_empty();
546 fb1a36c0 2022-01-09 op merge_config(conf, xconf);
552 fb1a36c0 2022-01-09 op main_shutdown(void)
557 fb1a36c0 2022-01-09 op /* close pipes. */
558 fb1a36c0 2022-01-09 op config_clear(main_conf);
560 fb1a36c0 2022-01-09 op log_debug("waiting for children to terminate");
562 fb1a36c0 2022-01-09 op pid = wait(&status);
563 fb1a36c0 2022-01-09 op if (pid == -1) {
564 fb1a36c0 2022-01-09 op if (errno != EINTR && errno != ECHILD)
565 fb1a36c0 2022-01-09 op fatal("wait");
566 fb1a36c0 2022-01-09 op } else if (WIFSIGNALED(status))
567 fb1a36c0 2022-01-09 op log_warnx("%s terminated; signal %d",
568 fb1a36c0 2022-01-09 op (pid == listener_pid) ? "logger" : "clientconn",
569 fb1a36c0 2022-01-09 op WTERMSIG(status));
570 fb1a36c0 2022-01-09 op } while (pid != -1 || (pid == -1 && errno == EINTR));
572 fb1a36c0 2022-01-09 op free(iev_listener);
574 fb1a36c0 2022-01-09 op log_info("terminating");
579 fb1a36c0 2022-01-09 op start_child(enum kd_process p, int fd, int debug, int verbose)
581 fb1a36c0 2022-01-09 op const char *argv[5];
582 fb1a36c0 2022-01-09 op int argc = 0;
585 fb1a36c0 2022-01-09 op switch (pid = fork()) {
587 fb1a36c0 2022-01-09 op fatal("cannot fork");
595 fb1a36c0 2022-01-09 op if (fd != 3) {
596 fb1a36c0 2022-01-09 op if (dup2(fd, 3) == -1)
597 fb1a36c0 2022-01-09 op fatal("cannot setup imsg fd");
598 fb1a36c0 2022-01-09 op } else if (fcntl(F_SETFD, 0) == -1)
599 fb1a36c0 2022-01-09 op fatal("cannot setup imsg fd");
601 fb1a36c0 2022-01-09 op argv[argc++] = saved_argv0;
603 fb1a36c0 2022-01-09 op case PROC_MAIN:
604 fb1a36c0 2022-01-09 op fatalx("Can not start main process");
605 fb1a36c0 2022-01-09 op case PROC_LISTENER:
606 fb1a36c0 2022-01-09 op argv[argc++] = "-Tl";
608 fb1a36c0 2022-01-09 op case PROC_CLIENTCONN:
609 fb1a36c0 2022-01-09 op argv[argc++] = "-Tc";
613 fb1a36c0 2022-01-09 op argv[argc++] = "-d";
615 fb1a36c0 2022-01-09 op argv[argc++] = "-v";
616 fb1a36c0 2022-01-09 op argv[argc++] = NULL;
618 fb1a36c0 2022-01-09 op /* really? */
619 fb1a36c0 2022-01-09 op execvp(saved_argv0, (char *const *)argv);
620 fb1a36c0 2022-01-09 op fatal("execvp");
624 fb1a36c0 2022-01-09 op main_imsg_compose_listener(int type, int fd, uint32_t peerid,
625 fb1a36c0 2022-01-09 op const void *data, uint16_t datalen)
627 fb1a36c0 2022-01-09 op if (iev_listener)
628 fb1a36c0 2022-01-09 op return imsg_compose_event(iev_listener, type, peerid, 0,
629 fb1a36c0 2022-01-09 op fd, data, datalen);