2 b0a6bcf7 2022-09-13 op * Copyright (c) 2022 Omar Polo <op@omarpolo.com>
3 b0a6bcf7 2022-09-13 op * Copyright (c) 2011 - 2015 Reyk Floeter <reyk@openbsd.org>
5 b0a6bcf7 2022-09-13 op * Permission to use, copy, modify, and distribute this software for any
6 b0a6bcf7 2022-09-13 op * purpose with or without fee is hereby granted, provided that the above
7 b0a6bcf7 2022-09-13 op * copyright notice and this permission notice appear in all copies.
9 b0a6bcf7 2022-09-13 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 b0a6bcf7 2022-09-13 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 b0a6bcf7 2022-09-13 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 b0a6bcf7 2022-09-13 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 b0a6bcf7 2022-09-13 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 b0a6bcf7 2022-09-13 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 b0a6bcf7 2022-09-13 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 b0a6bcf7 2022-09-13 op #include <sys/types.h>
19 b0a6bcf7 2022-09-13 op #include <sys/queue.h>
20 b0a6bcf7 2022-09-13 op #include <sys/socket.h>
21 b0a6bcf7 2022-09-13 op #include <sys/un.h>
22 b0a6bcf7 2022-09-13 op #include <sys/tree.h>
23 b0a6bcf7 2022-09-13 op #include <sys/time.h>
24 b0a6bcf7 2022-09-13 op #include <sys/uio.h>
26 b0a6bcf7 2022-09-13 op #include <sys/stat.h> /* umask */
27 b0a6bcf7 2022-09-13 op #include <sys/un.h> /* sockaddr_un */
29 b0a6bcf7 2022-09-13 op #include <errno.h>
30 b0a6bcf7 2022-09-13 op #include <event.h>
31 b0a6bcf7 2022-09-13 op #include <limits.h>
32 b0a6bcf7 2022-09-13 op #include <pwd.h>
33 b0a6bcf7 2022-09-13 op #include <unistd.h>
34 b0a6bcf7 2022-09-13 op #include <stdlib.h>
35 b0a6bcf7 2022-09-13 op #include <stdio.h>
36 b0a6bcf7 2022-09-13 op #include <string.h>
37 b0a6bcf7 2022-09-13 op #include <imsg.h>
39 b0a6bcf7 2022-09-13 op #include "proc.h"
40 b0a6bcf7 2022-09-13 op #include "log.h"
41 b0a6bcf7 2022-09-13 op #include "xmalloc.h"
43 b0a6bcf7 2022-09-13 op #include "galileo.h"
46 b0a6bcf7 2022-09-13 op config_init(struct galileo *env)
48 b0a6bcf7 2022-09-13 op /* Global configuration */
49 b0a6bcf7 2022-09-13 op if (privsep_process == PROC_PARENT)
50 b0a6bcf7 2022-09-13 op env->sc_prefork = PROXY_NUMPROC;
52 b0a6bcf7 2022-09-13 op /* Other configuration. */
53 b0a6bcf7 2022-09-13 op TAILQ_INIT(&env->sc_servers);
55 b0a6bcf7 2022-09-13 op env->sc_sock_fd = -1;
61 b0a6bcf7 2022-09-13 op config_purge(struct galileo *env)
63 b0a6bcf7 2022-09-13 op struct server *srv;
65 b0a6bcf7 2022-09-13 op while ((srv = TAILQ_FIRST(&env->sc_servers)) != NULL) {
66 b0a6bcf7 2022-09-13 op TAILQ_REMOVE(&env->sc_servers, srv, srv_entry);
67 b0a6bcf7 2022-09-13 op proxy_purge(srv);
72 b0a6bcf7 2022-09-13 op config_setserver(struct galileo *env, struct server *srv)
74 b0a6bcf7 2022-09-13 op struct privsep *ps = env->sc_ps;
76 b0a6bcf7 2022-09-13 op if (proc_compose(ps, PROC_PROXY, IMSG_CFG_SRV, srv, sizeof(*srv))
78 b0a6bcf7 2022-09-13 op fatal("proc_compose");
83 b0a6bcf7 2022-09-13 op config_getserver(struct galileo *env, struct imsg *imsg)
85 b0a6bcf7 2022-09-13 op struct server *srv;
87 b0a6bcf7 2022-09-13 op srv = xcalloc(1, sizeof(*srv));
88 b0a6bcf7 2022-09-13 op if (IMSG_DATA_SIZE(imsg) != sizeof(*srv))
89 b0a6bcf7 2022-09-13 op fatalx("%s: bad imsg size", __func__);
91 b0a6bcf7 2022-09-13 op memcpy(srv, imsg->data, sizeof(*srv));
93 b0a6bcf7 2022-09-13 op log_debug("%s: server=%s proxy-to=%s:%d (%s)", __func__,
94 b0a6bcf7 2022-09-13 op srv->srv_conf.host, srv->srv_conf.proxy_addr,
95 b0a6bcf7 2022-09-13 op srv->srv_conf.proxy_port, srv->srv_conf.proxy_name);
97 b0a6bcf7 2022-09-13 op TAILQ_INSERT_TAIL(&env->sc_servers, srv, srv_entry);
103 b0a6bcf7 2022-09-13 op config_setsock(struct galileo *env)
105 b0a6bcf7 2022-09-13 op struct privsep *ps = env->sc_ps;
106 b0a6bcf7 2022-09-13 op struct passwd *pw = ps->ps_pw;
107 b0a6bcf7 2022-09-13 op struct sockaddr_un sun;
108 b0a6bcf7 2022-09-13 op const char *path = GALILEO_SOCK;
109 b0a6bcf7 2022-09-13 op int id, fd, old_umask;
112 b0a6bcf7 2022-09-13 op * open listening socket.
114 b0a6bcf7 2022-09-13 op * XXX: move to server.c as server_privinit like httpd once we
115 b0a6bcf7 2022-09-13 op * support more than one listening socket.
117 b0a6bcf7 2022-09-13 op if ((fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0)) == -1) {
118 b0a6bcf7 2022-09-13 op log_warn("%s: socket", __func__);
122 b0a6bcf7 2022-09-13 op memset(&sun, 0, sizeof(sun));
123 b0a6bcf7 2022-09-13 op sun.sun_family = AF_UNIX;
124 b0a6bcf7 2022-09-13 op strlcpy(sun.sun_path, path, sizeof(sun.sun_path));
126 b0a6bcf7 2022-09-13 op if (unlink(path) == -1)
127 b0a6bcf7 2022-09-13 op if (errno != ENOENT) {
128 b0a6bcf7 2022-09-13 op log_warn("%s: unlink %s", __func__, path);
133 b0a6bcf7 2022-09-13 op old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
134 b0a6bcf7 2022-09-13 op if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
135 b0a6bcf7 2022-09-13 op log_warn("%s: bind: %s (%d)", __func__, path, geteuid());
137 b0a6bcf7 2022-09-13 op umask(old_umask);
140 b0a6bcf7 2022-09-13 op umask(old_umask);
142 b0a6bcf7 2022-09-13 op if (chmod(path, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) == -1) {
143 b0a6bcf7 2022-09-13 op log_warn("%s: chmod", __func__);
145 b0a6bcf7 2022-09-13 op (void)unlink(path);
149 b0a6bcf7 2022-09-13 op if (chown(path, pw->pw_uid, pw->pw_gid) == -1) {
150 b0a6bcf7 2022-09-13 op log_warn("%s: chown", __func__);
152 b0a6bcf7 2022-09-13 op (void)unlink(path);
156 b0a6bcf7 2022-09-13 op if (listen(fd, 5) == -1) {
157 b0a6bcf7 2022-09-13 op log_warn("%s: listen", __func__);
159 b0a6bcf7 2022-09-13 op (void)unlink(path);
163 b0a6bcf7 2022-09-13 op for (id = 0; id < PROC_MAX; ++id) {
166 b0a6bcf7 2022-09-13 op if (id == privsep_process || id != PROC_PROXY)
170 b0a6bcf7 2022-09-13 op proc_range(ps, id, &n, &m);
171 b0a6bcf7 2022-09-13 op for (n = 0; n < m; ++n) {
174 b0a6bcf7 2022-09-13 op if ((d = dup(fd)) == -1) {
175 b0a6bcf7 2022-09-13 op log_warn("%s: dup", __func__);
180 b0a6bcf7 2022-09-13 op if (proc_compose_imsg(ps, id, n, IMSG_CFG_SOCK,
181 b0a6bcf7 2022-09-13 op -1, d, NULL, 0) == -1) {
182 b0a6bcf7 2022-09-13 op log_warn("%s: failed to compose "
183 b0a6bcf7 2022-09-13 op "IMSG_CFG_SOCK", __func__);
187 b0a6bcf7 2022-09-13 op if (proc_flush_imsg(ps, id, n) == -1) {
188 b0a6bcf7 2022-09-13 op log_warn("%s: failed to flush", __func__);
195 b0a6bcf7 2022-09-13 op /* close(fd); */
200 b0a6bcf7 2022-09-13 op config_getsock(struct galileo *env, struct imsg *imsg)
202 b0a6bcf7 2022-09-13 op /* XXX: make it more like httpd/gotwebd' one */
203 b0a6bcf7 2022-09-13 op return imsg->fd;
207 b0a6bcf7 2022-09-13 op config_setreset(struct galileo *env)
209 b0a6bcf7 2022-09-13 op struct privsep *ps = env->sc_ps;
212 b0a6bcf7 2022-09-13 op for (id = 0; id < PROC_MAX; ++id)
213 b0a6bcf7 2022-09-13 op proc_compose(ps, id, IMSG_CTL_RESET, NULL, 0);
219 b0a6bcf7 2022-09-13 op config_getreset(struct galileo *env, struct imsg *imsg)
221 b0a6bcf7 2022-09-13 op config_purge(env);