1 a596b957 2022-07-14 tracey /*
  2 a596b957 2022-07-14 tracey  * Copyright (c) 2020-2021 Tracey Emery <tracey@traceyemery.net>
  3 a596b957 2022-07-14 tracey  * Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
  4 a596b957 2022-07-14 tracey  *
  5 a596b957 2022-07-14 tracey  * Permission to use, copy, modify, and distribute this software for any
  6 a596b957 2022-07-14 tracey  * purpose with or without fee is hereby granted, provided that the above
  7 a596b957 2022-07-14 tracey  * copyright notice and this permission notice appear in all copies.
  8 a596b957 2022-07-14 tracey  *
  9 a596b957 2022-07-14 tracey  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 10 a596b957 2022-07-14 tracey  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 11 a596b957 2022-07-14 tracey  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 12 a596b957 2022-07-14 tracey  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 13 a596b957 2022-07-14 tracey  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 14 a596b957 2022-07-14 tracey  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 15 a596b957 2022-07-14 tracey  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 16 a596b957 2022-07-14 tracey  */
 17 a596b957 2022-07-14 tracey 
 18 a596b957 2022-07-14 tracey #include <sys/types.h>
 19 a596b957 2022-07-14 tracey #include <sys/queue.h>
 20 a596b957 2022-07-14 tracey #include <sys/time.h>
 21 a596b957 2022-07-14 tracey #include <sys/uio.h>
 22 a596b957 2022-07-14 tracey #include <sys/socket.h>
 23 a596b957 2022-07-14 tracey 
 24 a596b957 2022-07-14 tracey #include <net/if.h>
 25 a596b957 2022-07-14 tracey #include <netinet/in.h>
 26 a596b957 2022-07-14 tracey 
 27 a596b957 2022-07-14 tracey #include <stdio.h>
 28 a596b957 2022-07-14 tracey #include <stdlib.h>
 29 a596b957 2022-07-14 tracey #include <termios.h>
 30 a596b957 2022-07-14 tracey #include <unistd.h>
 31 a596b957 2022-07-14 tracey #include <limits.h>
 32 a596b957 2022-07-14 tracey #include <string.h>
 33 a596b957 2022-07-14 tracey #include <event.h>
 34 a596b957 2022-07-14 tracey #include <fcntl.h>
 35 a596b957 2022-07-14 tracey #include <util.h>
 36 a596b957 2022-07-14 tracey #include <errno.h>
 37 a596b957 2022-07-14 tracey #include <imsg.h>
 38 a596b957 2022-07-14 tracey 
 39 a596b957 2022-07-14 tracey #include "got_opentemp.h"
 40 df2d3cd2 2023-03-11 op #include "got_reference.h"
 41 a596b957 2022-07-14 tracey 
 42 a596b957 2022-07-14 tracey #include "gotwebd.h"
 43 1220d7ea 2024-05-21 op #include "log.h"
 44 a596b957 2022-07-14 tracey 
 45 a596b957 2022-07-14 tracey int
 46 a596b957 2022-07-14 tracey config_init(struct gotwebd *env)
 47 a596b957 2022-07-14 tracey {
 48 2a83fef7 2024-05-27 op 	int i;
 49 2a83fef7 2024-05-27 op 
 50 f4a5cef1 2023-06-15 op 	strlcpy(env->httpd_chroot, D_HTTPD_CHROOT, sizeof(env->httpd_chroot));
 51 a596b957 2022-07-14 tracey 
 52 26678add 2023-11-16 op 	env->prefork_gotwebd = GOTWEBD_NUMPROC;
 53 26678add 2023-11-16 op 	env->server_cnt = 0;
 54 26678add 2023-11-16 op 	TAILQ_INIT(&env->servers);
 55 26678add 2023-11-16 op 	TAILQ_INIT(&env->sockets);
 56 36079424 2024-05-16 op 	TAILQ_INIT(&env->addresses);
 57 a596b957 2022-07-14 tracey 
 58 2a83fef7 2024-05-27 op 	for (i = 0; i < PRIV_FDS__MAX; i++)
 59 2a83fef7 2024-05-27 op 		env->priv_fd[i] = -1;
 60 2a83fef7 2024-05-27 op 
 61 2a83fef7 2024-05-27 op 	for (i = 0; i < GOTWEB_PACK_NUM_TEMPFILES; i++)
 62 2a83fef7 2024-05-27 op 		env->pack_fds[i] = -1;
 63 2a83fef7 2024-05-27 op 
 64 f90f59b4 2023-05-17 op 	return 0;
 65 a596b957 2022-07-14 tracey }
 66 a596b957 2022-07-14 tracey 
 67 a596b957 2022-07-14 tracey int
 68 a596b957 2022-07-14 tracey config_getcfg(struct gotwebd *env, struct imsg *imsg)
 69 a596b957 2022-07-14 tracey {
 70 a596b957 2022-07-14 tracey 	/* nothing to do but tell gotwebd configuration is done */
 71 26678add 2023-11-16 op 	if (sockets_compose_main(env, IMSG_CFG_DONE, NULL, 0) == -1)
 72 26678add 2023-11-16 op 		fatal("sockets_compose_main IMSG_CFG_DONE");
 73 f90f59b4 2023-05-17 op 	return 0;
 74 a596b957 2022-07-14 tracey }
 75 a596b957 2022-07-14 tracey 
 76 a596b957 2022-07-14 tracey int
 77 a596b957 2022-07-14 tracey config_setserver(struct gotwebd *env, struct server *srv)
 78 a596b957 2022-07-14 tracey {
 79 26678add 2023-11-16 op 	if (main_compose_sockets(env, IMSG_CFG_SRV, -1, srv, sizeof(*srv))
 80 7e0ec052 2022-09-06 op 	    == -1)
 81 26678add 2023-11-16 op 		fatal("main_compose_sockets IMSG_CFG_SRV");
 82 f90f59b4 2023-05-17 op 	return 0;
 83 a596b957 2022-07-14 tracey }
 84 a596b957 2022-07-14 tracey 
 85 a596b957 2022-07-14 tracey int
 86 a596b957 2022-07-14 tracey config_getserver(struct gotwebd *env, struct imsg *imsg)
 87 a596b957 2022-07-14 tracey {
 88 a596b957 2022-07-14 tracey 	struct server *srv;
 89 a596b957 2022-07-14 tracey 	uint8_t *p = imsg->data;
 90 a596b957 2022-07-14 tracey 
 91 a596b957 2022-07-14 tracey 	srv = calloc(1, sizeof(*srv));
 92 a596b957 2022-07-14 tracey 	if (srv == NULL)
 93 a596b957 2022-07-14 tracey 		fatalx("%s: calloc", __func__);
 94 a596b957 2022-07-14 tracey 
 95 6e0942f6 2023-11-17 op 	if (IMSG_DATA_SIZE(imsg) != sizeof(*srv))
 96 6e0942f6 2023-11-17 op 		fatalx("%s: wrong size", __func__);
 97 7e0ec052 2022-09-06 op 
 98 7e0ec052 2022-09-06 op 	memcpy(srv, p, sizeof(*srv));
 99 a596b957 2022-07-14 tracey 
100 a596b957 2022-07-14 tracey 	/* log server info */
101 36079424 2024-05-16 op 	log_debug("%s: server=%s", __func__, srv->name);
102 a596b957 2022-07-14 tracey 
103 2ad48e9a 2022-08-16 stsp 	TAILQ_INSERT_TAIL(&env->servers, srv, entry);
104 a596b957 2022-07-14 tracey 
105 f90f59b4 2023-05-17 op 	return 0;
106 a596b957 2022-07-14 tracey }
107 a596b957 2022-07-14 tracey 
108 a596b957 2022-07-14 tracey int
109 a596b957 2022-07-14 tracey config_setsock(struct gotwebd *env, struct socket *sock)
110 a596b957 2022-07-14 tracey {
111 a596b957 2022-07-14 tracey 	/* open listening sockets */
112 a596b957 2022-07-14 tracey 	if (sockets_privinit(env, sock) == -1)
113 a596b957 2022-07-14 tracey 		return -1;
114 a596b957 2022-07-14 tracey 
115 26678add 2023-11-16 op 	if (main_compose_sockets(env, IMSG_CFG_SOCK, sock->fd,
116 26678add 2023-11-16 op 	    &sock->conf, sizeof(sock->conf)) == -1)
117 26678add 2023-11-16 op 		fatal("main_compose_sockets IMSG_CFG_SOCK");
118 a596b957 2022-07-14 tracey 
119 26678add 2023-11-16 op 	sock->fd = -1;
120 f90f59b4 2023-05-17 op 	return 0;
121 a596b957 2022-07-14 tracey }
122 a596b957 2022-07-14 tracey 
123 a596b957 2022-07-14 tracey int
124 a596b957 2022-07-14 tracey config_getsock(struct gotwebd *env, struct imsg *imsg)
125 a596b957 2022-07-14 tracey {
126 a596b957 2022-07-14 tracey 	struct socket *sock = NULL;
127 a596b957 2022-07-14 tracey 	struct socket_conf sock_conf;
128 a596b957 2022-07-14 tracey 	uint8_t *p = imsg->data;
129 a596b957 2022-07-14 tracey 
130 6e0942f6 2023-11-17 op 	if (IMSG_DATA_SIZE(imsg) != sizeof(sock_conf))
131 6e0942f6 2023-11-17 op 		fatalx("%s: wrong size", __func__);
132 6e0942f6 2023-11-17 op 
133 a596b957 2022-07-14 tracey 	memcpy(&sock_conf, p, sizeof(sock_conf));
134 a596b957 2022-07-14 tracey 
135 a596b957 2022-07-14 tracey 	if (IMSG_DATA_SIZE(imsg) != sizeof(sock_conf)) {
136 a596b957 2022-07-14 tracey 		log_debug("%s: imsg size error", __func__);
137 a596b957 2022-07-14 tracey 		return 1;
138 a596b957 2022-07-14 tracey 	}
139 a596b957 2022-07-14 tracey 
140 a596b957 2022-07-14 tracey 	/* create a new socket */
141 a596b957 2022-07-14 tracey 	if ((sock = calloc(1, sizeof(*sock))) == NULL) {
142 a596b957 2022-07-14 tracey 		return 1;
143 a596b957 2022-07-14 tracey 	}
144 a596b957 2022-07-14 tracey 
145 a596b957 2022-07-14 tracey 	memcpy(&sock->conf, &sock_conf, sizeof(sock->conf));
146 2c52c623 2024-01-30 op 	sock->fd = imsg_get_fd(imsg);
147 a596b957 2022-07-14 tracey 
148 2ad48e9a 2022-08-16 stsp 	TAILQ_INSERT_TAIL(&env->sockets, sock, entry);
149 a596b957 2022-07-14 tracey 
150 a596b957 2022-07-14 tracey 	/* log new socket info */
151 36079424 2024-05-16 op 	log_debug("%s: id=%d af_type=%s socket_path=%s",
152 36079424 2024-05-16 op 	    __func__, sock->conf.id,
153 4fcc9f74 2022-08-16 stsp 	    sock->conf.af_type == AF_UNIX ? "unix" :
154 4fcc9f74 2022-08-16 stsp 	    (sock->conf.af_type == AF_INET ? "inet" :
155 4fcc9f74 2022-08-16 stsp 	    (sock->conf.af_type == AF_INET6 ? "inet6" : "unknown")),
156 4448825a 2023-06-16 op 	    *sock->conf.unix_socket_name != '\0' ?
157 a596b957 2022-07-14 tracey 	    sock->conf.unix_socket_name : "none");
158 a596b957 2022-07-14 tracey 
159 f90f59b4 2023-05-17 op 	return 0;
160 a596b957 2022-07-14 tracey }
161 a596b957 2022-07-14 tracey 
162 a596b957 2022-07-14 tracey int
163 2a83fef7 2024-05-27 op config_setfd(struct gotwebd *env)
164 a596b957 2022-07-14 tracey {
165 58cdb97c 2023-11-16 op 	int i, j, ret, fd;
166 a596b957 2022-07-14 tracey 
167 a596b957 2022-07-14 tracey 	log_debug("%s: Allocating %d file descriptors",
168 0f91044a 2022-07-22 stsp 	    __func__, PRIV_FDS__MAX + GOTWEB_PACK_NUM_TEMPFILES);
169 a596b957 2022-07-14 tracey 
170 26678add 2023-11-16 op 	for (i = 0; i < PRIV_FDS__MAX + GOTWEB_PACK_NUM_TEMPFILES; i++) {
171 58cdb97c 2023-11-16 op 		for (j = 0; j < env->nserver; ++j) {
172 58cdb97c 2023-11-16 op 			fd = got_opentempfd();
173 58cdb97c 2023-11-16 op 			if (fd == -1)
174 58cdb97c 2023-11-16 op 				fatal("got_opentemp");
175 58cdb97c 2023-11-16 op 			if (imsg_compose_event(&env->iev_server[j],
176 2a83fef7 2024-05-27 op 			    IMSG_CFG_FD, 0, -1, fd, NULL, 0) == -1)
177 58cdb97c 2023-11-16 op 				fatal("imsg_compose_event IMSG_CFG_FD");
178 58cdb97c 2023-11-16 op 
179 58cdb97c 2023-11-16 op 			do {
180 58cdb97c 2023-11-16 op 				ret = imsg_flush(&env->iev_server[j].ibuf);
181 58cdb97c 2023-11-16 op 			} while (ret == -1 && errno == EAGAIN);
182 58cdb97c 2023-11-16 op 			if (ret == -1)
183 58cdb97c 2023-11-16 op 				fatal("imsg_flush");
184 58cdb97c 2023-11-16 op 			imsg_event_add(&env->iev_server[j]);
185 58cdb97c 2023-11-16 op 		}
186 a596b957 2022-07-14 tracey 	}
187 26678add 2023-11-16 op 
188 a596b957 2022-07-14 tracey 	return 0;
189 a596b957 2022-07-14 tracey }
190 a596b957 2022-07-14 tracey 
191 a596b957 2022-07-14 tracey int
192 a596b957 2022-07-14 tracey config_getfd(struct gotwebd *env, struct imsg *imsg)
193 a596b957 2022-07-14 tracey {
194 2a83fef7 2024-05-27 op 	int match = 0, i, j;
195 2a83fef7 2024-05-27 op 	const int nfds = GOTWEB_PACK_NUM_TEMPFILES + PRIV_FDS__MAX;
196 a596b957 2022-07-14 tracey 
197 2a83fef7 2024-05-27 op 	if (imsg_get_len(imsg) != 0)
198 6e0942f6 2023-11-17 op 		fatalx("%s: wrong size", __func__);
199 6e0942f6 2023-11-17 op 
200 2a83fef7 2024-05-27 op 	for (i = 0; i < nfds; i++) {
201 2a83fef7 2024-05-27 op 		if (i < PRIV_FDS__MAX && env->priv_fd[i] == -1) {
202 2a83fef7 2024-05-27 op 			env->priv_fd[i] = imsg_get_fd(imsg);
203 2a83fef7 2024-05-27 op 			log_debug("%s: assigning priv_fd %d",
204 2a83fef7 2024-05-27 op 			    __func__, env->priv_fd[i]);
205 2a83fef7 2024-05-27 op 			match = 1;
206 2a83fef7 2024-05-27 op 			break;
207 2a83fef7 2024-05-27 op 		}
208 a596b957 2022-07-14 tracey 
209 2a83fef7 2024-05-27 op 		j = i - PRIV_FDS__MAX;
210 2a83fef7 2024-05-27 op 		if (env->pack_fds[j] == -1) {
211 2a83fef7 2024-05-27 op 			env->pack_fds[j] = imsg_get_fd(imsg);
212 2a83fef7 2024-05-27 op 			log_debug("%s: assigning pack_fd %d",
213 2a83fef7 2024-05-27 op 			    __func__, env->pack_fds[j]);
214 2a83fef7 2024-05-27 op 			match = 1;
215 2a83fef7 2024-05-27 op 			break;
216 a596b957 2022-07-14 tracey 		}
217 a596b957 2022-07-14 tracey 	}
218 a596b957 2022-07-14 tracey 
219 a596b957 2022-07-14 tracey 	if (match)
220 f90f59b4 2023-05-17 op 		return 0;
221 a596b957 2022-07-14 tracey 	else
222 a596b957 2022-07-14 tracey 		return 1;
223 a596b957 2022-07-14 tracey }