2 0126d91d 2022-09-07 op * Copyright (c) 2022 Omar Polo <op@omarpolo.com>
4 0126d91d 2022-09-07 op * Permission to use, copy, modify, and distribute this software for any
5 0126d91d 2022-09-07 op * purpose with or without fee is hereby granted, provided that the above
6 0126d91d 2022-09-07 op * copyright notice and this permission notice appear in all copies.
8 0126d91d 2022-09-07 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 0126d91d 2022-09-07 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 0126d91d 2022-09-07 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 0126d91d 2022-09-07 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 0126d91d 2022-09-07 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 0126d91d 2022-09-07 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 0126d91d 2022-09-07 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 0126d91d 2022-09-07 op #include "gmid.h"
19 0126d91d 2022-09-07 op #include <sys/stat.h>
20 0126d91d 2022-09-07 op #include <sys/wait.h>
22 0126d91d 2022-09-07 op #include <errno.h>
23 0126d91d 2022-09-07 op #include <fcntl.h>
24 0126d91d 2022-09-07 op #include <getopt.h>
25 0046c1fe 2023-06-06 op #include <locale.h>
26 0126d91d 2022-09-07 op #include <libgen.h>
27 0126d91d 2022-09-07 op #include <signal.h>
28 0126d91d 2022-09-07 op #include <string.h>
29 eae52ad4 2023-06-06 op #include <syslog.h>
30 0126d91d 2022-09-07 op #include <unistd.h>
32 eae52ad4 2023-06-06 op #include "log.h"
34 0126d91d 2022-09-07 op struct conf conf;
35 797c4609 2023-06-08 op int privsep_process;
37 070b3295 2023-06-05 op struct vhosthead hosts = TAILQ_HEAD_INITIALIZER(hosts);
39 0126d91d 2022-09-07 op static const struct option opts[] = {
40 0126d91d 2022-09-07 op {"help", no_argument, NULL, 'h'},
41 0126d91d 2022-09-07 op {"version", no_argument, NULL, 'V'},
42 0126d91d 2022-09-07 op {NULL, 0, NULL, 0},
46 797c4609 2023-06-08 op log_request(struct client *c, char *meta, size_t l)
48 797c4609 2023-06-08 op char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV], b[GEMINI_URL_LEN];
49 797c4609 2023-06-08 op const char *t;
53 797c4609 2023-06-08 op len = sizeof(c->addr);
54 797c4609 2023-06-08 op ec = getnameinfo((struct sockaddr*)&c->addr, len,
55 797c4609 2023-06-08 op hbuf, sizeof(hbuf),
56 797c4609 2023-06-08 op sbuf, sizeof(sbuf),
57 797c4609 2023-06-08 op NI_NUMERICHOST | NI_NUMERICSERV);
59 797c4609 2023-06-08 op fatalx("getnameinfo: %s", gai_strerror(ec));
61 797c4609 2023-06-08 op if (c->iri.schema != NULL) {
62 797c4609 2023-06-08 op /* serialize the IRI */
63 797c4609 2023-06-08 op strlcpy(b, c->iri.schema, sizeof(b));
64 797c4609 2023-06-08 op strlcat(b, "://", sizeof(b));
66 797c4609 2023-06-08 op /* log the decoded host name, but if it was invalid
67 797c4609 2023-06-08 op * use the raw one. */
68 797c4609 2023-06-08 op if (*c->domain != '\0')
69 797c4609 2023-06-08 op strlcat(b, c->domain, sizeof(b));
71 797c4609 2023-06-08 op strlcat(b, c->iri.host, sizeof(b));
73 797c4609 2023-06-08 op if (*c->iri.path != '/')
74 797c4609 2023-06-08 op strlcat(b, "/", sizeof(b));
75 797c4609 2023-06-08 op strlcat(b, c->iri.path, sizeof(b)); /* TODO: sanitize UTF8 */
76 797c4609 2023-06-08 op if (*c->iri.query != '\0') { /* TODO: sanitize UTF8 */
77 797c4609 2023-06-08 op strlcat(b, "?", sizeof(b));
78 797c4609 2023-06-08 op strlcat(b, c->iri.query, sizeof(b));
81 797c4609 2023-06-08 op if ((t = c->req) == NULL)
83 797c4609 2023-06-08 op strlcpy(b, t, sizeof(b));
86 797c4609 2023-06-08 op if ((t = memchr(meta, '\r', l)) == NULL)
87 797c4609 2023-06-08 op t = meta + len;
89 797c4609 2023-06-08 op fprintf(stderr, "%s:%s GET %s %.*s\n", hbuf, sbuf, b,
90 797c4609 2023-06-08 op (int)(t-meta), meta);
94 0126d91d 2022-09-07 op load_local_cert(struct vhost *h, const char *hostname, const char *dir)
96 0126d91d 2022-09-07 op char *cert, *key;
98 0126d91d 2022-09-07 op if (asprintf(&cert, "%s/%s.cert.pem", dir, hostname) == -1)
99 2dd5994a 2023-06-06 op fatal("asprintf");
100 0126d91d 2022-09-07 op if (asprintf(&key, "%s/%s.key.pem", dir, hostname) == -1)
101 2dd5994a 2023-06-06 op fatal("asprintf");
103 0126d91d 2022-09-07 op if (access(cert, R_OK) == -1 || access(key, R_OK) == -1)
104 0126d91d 2022-09-07 op gen_certificate(hostname, cert, key);
106 797c4609 2023-06-08 op h->cert = tls_load_file(cert, &h->certlen, NULL);
107 797c4609 2023-06-08 op if (h->cert == NULL)
108 797c4609 2023-06-08 op fatal("can't load %s", cert);
110 797c4609 2023-06-08 op h->key = tls_load_file(key, &h->keylen, NULL);
111 797c4609 2023-06-08 op if (h->key == NULL)
112 797c4609 2023-06-08 op fatal("can't load %s", key);
114 534afd0d 2022-10-05 op strlcpy(h->domain, hostname, sizeof(h->domain));
117 0126d91d 2022-09-07 op /* wrapper around dirname(3). dn must be PATH_MAX+1 at least. */
119 0126d91d 2022-09-07 op pdirname(const char *path, char *dn)
121 0126d91d 2022-09-07 op char p[PATH_MAX+1];
124 0126d91d 2022-09-07 op strlcpy(p, path, sizeof(p));
125 0126d91d 2022-09-07 op t = dirname(p);
126 0126d91d 2022-09-07 op memmove(dn, t, strlen(t)+1);
130 0126d91d 2022-09-07 op mkdirs(const char *path, mode_t mode)
132 0126d91d 2022-09-07 op char dname[PATH_MAX+1];
134 0126d91d 2022-09-07 op pdirname(path, dname);
135 0126d91d 2022-09-07 op if (!strcmp(dname, "/"))
137 0126d91d 2022-09-07 op mkdirs(dname, mode);
138 0126d91d 2022-09-07 op if (mkdir(path, mode) != 0 && errno != EEXIST)
139 df5058c9 2023-06-05 op fatal("can't mkdir %s", path);
142 0126d91d 2022-09-07 op /* $XDG_DATA_HOME/gmid */
144 0126d91d 2022-09-07 op data_dir(void)
146 0126d91d 2022-09-07 op const char *home, *xdg;
149 0126d91d 2022-09-07 op if ((xdg = getenv("XDG_DATA_HOME")) == NULL) {
150 0126d91d 2022-09-07 op if ((home = getenv("HOME")) == NULL)
151 2dd5994a 2023-06-06 op fatalx("XDG_DATA_HOME and HOME both empty");
152 0126d91d 2022-09-07 op if (asprintf(&t, "%s/.local/share/gmid", home) == -1)
153 2dd5994a 2023-06-06 op fatalx("asprintf");
155 0126d91d 2022-09-07 op if (asprintf(&t, "%s/gmid", xdg) == -1)
156 2dd5994a 2023-06-06 op fatal("asprintf");
159 0126d91d 2022-09-07 op mkdirs(t, 0755);
164 070b3295 2023-06-05 op serve(const char *host, int port, const char *dir)
166 0126d91d 2022-09-07 op struct addrinfo hints, *res, *res0;
167 4267093e 2023-06-06 op int r, error, saved_errno, sock = -1;
168 0126d91d 2022-09-07 op const char *cause = NULL;
169 0126d91d 2022-09-07 op char service[32];
171 4267093e 2023-06-06 op r = snprintf(service, sizeof(service), "%d", port);
172 4267093e 2023-06-06 op if (r < 0 || (size_t)r >= sizeof(service))
173 0126d91d 2022-09-07 op fatal("snprintf");
175 0126d91d 2022-09-07 op memset(&hints, 0, sizeof(hints));
176 0126d91d 2022-09-07 op hints.ai_family = AF_UNSPEC;
177 0126d91d 2022-09-07 op hints.ai_socktype = SOCK_STREAM;
178 0126d91d 2022-09-07 op hints.ai_flags = AI_PASSIVE;
179 0126d91d 2022-09-07 op error = getaddrinfo(host, service, &hints, &res0);
181 df5058c9 2023-06-05 op fatalx("%s", gai_strerror(error));
182 0126d91d 2022-09-07 op for (res = res0; res; res = res->ai_next) {
183 0126d91d 2022-09-07 op sock = socket(res->ai_family, res->ai_socktype,
184 0126d91d 2022-09-07 op res->ai_protocol);
185 0126d91d 2022-09-07 op if (sock == -1) {
186 0126d91d 2022-09-07 op cause = "socket";
190 0126d91d 2022-09-07 op if (bind(sock, res->ai_addr, res->ai_addrlen) == -1) {
191 0126d91d 2022-09-07 op cause = "bind";
192 0126d91d 2022-09-07 op saved_errno = errno;
194 0126d91d 2022-09-07 op errno = saved_errno;
198 0126d91d 2022-09-07 op if (listen(sock, 5) == -1)
199 0126d91d 2022-09-07 op fatal("listen");
202 0126d91d 2022-09-07 op * for the time being, we're happy as soon as
203 0126d91d 2022-09-07 op * something binds.
208 0126d91d 2022-09-07 op if (sock == -1)
209 0126d91d 2022-09-07 op fatal("%s", cause);
210 0126d91d 2022-09-07 op freeaddrinfo(res0);
212 797c4609 2023-06-08 op event_init();
214 797c4609 2023-06-08 op /* cheating */
215 797c4609 2023-06-08 op conf.sock4 = sock;
216 797c4609 2023-06-08 op event_set(&conf.evsock4, conf.sock4, EV_READ|EV_PERSIST,
217 797c4609 2023-06-08 op do_accept, NULL);
219 797c4609 2023-06-08 op server_init(NULL, NULL, NULL);
220 797c4609 2023-06-08 op if (server_configure_done(&conf) == -1)
221 797c4609 2023-06-08 op fatalx("server configuration failed");
223 eae52ad4 2023-06-06 op log_info("serving %s on port %d", dir, port);
224 797c4609 2023-06-08 op event_dispatch();
225 797c4609 2023-06-08 op log_info("quitting");
229 0126d91d 2022-09-07 op static __dead void
232 0126d91d 2022-09-07 op fprintf(stderr,
233 c5b4db93 2022-09-10 op "Version: " GE_STRING "\n"
234 0126d91d 2022-09-07 op "Usage: %s [-hVv] [-d certs-dir] [-H hostname] [-p port] [dir]\n",
235 0126d91d 2022-09-07 op getprogname());
240 0126d91d 2022-09-07 op main(int argc, char **argv)
242 0126d91d 2022-09-07 op struct vhost *host;
243 0126d91d 2022-09-07 op struct location *loc;
244 0126d91d 2022-09-07 op const char *errstr, *certs_dir = NULL, *hostname = "localhost";
245 0126d91d 2022-09-07 op char path[PATH_MAX];
248 0046c1fe 2023-06-06 op setlocale(LC_CTYPE, "");
250 eae52ad4 2023-06-06 op log_init(1, LOG_DAEMON);
251 eae52ad4 2023-06-06 op log_setverbose(0);
252 c68baad2 2023-06-06 op config_init();
254 0126d91d 2022-09-07 op while ((ch = getopt_long(argc, argv, "d:H:hp:Vv", opts, NULL)) != -1) {
255 0126d91d 2022-09-07 op switch (ch) {
257 0126d91d 2022-09-07 op certs_dir = optarg;
260 0126d91d 2022-09-07 op hostname = optarg;
266 0126d91d 2022-09-07 op conf.port = strtonum(optarg, 0, UINT16_MAX, &errstr);
268 df5058c9 2023-06-05 op fatalx("port number is %s: %s", errstr,
272 c5b4db93 2022-09-10 op puts("Version: " GE_STRING);
279 0126d91d 2022-09-07 op argc -= optind;
280 0126d91d 2022-09-07 op argv += optind;
282 0126d91d 2022-09-07 op if (argc > 1)
285 0126d91d 2022-09-07 op /* prepare the configuration */
286 0126d91d 2022-09-07 op init_mime(&conf.mime);
288 0126d91d 2022-09-07 op if (certs_dir == NULL)
289 0126d91d 2022-09-07 op certs_dir = data_dir();
291 0126d91d 2022-09-07 op /* set up the implicit vhost and location */
292 0126d91d 2022-09-07 op host = xcalloc(1, sizeof(*host));
293 0126d91d 2022-09-07 op TAILQ_INSERT_HEAD(&hosts, host, vhosts);
295 0126d91d 2022-09-07 op loc = xcalloc(1, sizeof(*loc));
296 0126d91d 2022-09-07 op loc->fcgi = -1;
297 0126d91d 2022-09-07 op TAILQ_INSERT_HEAD(&host->locations, loc, locations);
299 0126d91d 2022-09-07 op load_local_cert(host, hostname, certs_dir);
301 534afd0d 2022-10-05 op strlcpy(host->domain, "*", sizeof(host->domain));
302 0126d91d 2022-09-07 op loc->auto_index = 1;
303 534afd0d 2022-10-05 op strlcpy(loc->match, "*", sizeof(loc->match));
305 0126d91d 2022-09-07 op if (*argv == NULL) {
306 0126d91d 2022-09-07 op if (getcwd(path, sizeof(path)) == NULL)
307 0126d91d 2022-09-07 op fatal("getcwd");
308 534afd0d 2022-10-05 op strlcpy(loc->dir, path, sizeof(loc->dir));
312 534afd0d 2022-10-05 op tmp = absolutify_path(*argv);
313 534afd0d 2022-10-05 op strlcpy(loc->dir, tmp, sizeof(loc->dir));
317 0126d91d 2022-09-07 op /* start the server */
318 0126d91d 2022-09-07 op signal(SIGPIPE, SIG_IGN);
319 0126d91d 2022-09-07 op setproctitle("%s", loc->dir);
320 070b3295 2023-06-05 op return serve(hostname, conf.port, loc->dir);
