2 * Copyright (c) 2016-2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
3 * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
4 * Copyright (c) 2004 Ryan McBride <mcbride@openbsd.org>
5 * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
6 * Copyright (c) 2001 Markus Friedl. All rights reserved.
7 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
8 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
10 * Permission to use, copy, modify, and distribute this software for any
11 * purpose with or without fee is hereby granted, provided that the above
12 * copyright notice and this permission notice appear in all copies.
14 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
15 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
17 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
19 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
20 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 #include <sys/ioctl.h>
25 #include <sys/types.h>
26 #include <sys/queue.h>
27 #include <sys/socket.h>
31 #include <netinet/in.h>
33 #include <arpa/inet.h>
50 #include "got_reference.h"
54 TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
56 TAILQ_ENTRY(file) entry;
62 struct file *newfile(const char *, int);
63 static void closefile(struct file *);
64 int check_file_secrecy(int, const char *);
67 int yyerror(const char *, ...)
68 __attribute__((__format__ (printf, 1, 2)))
69 __attribute__((__nonnull__ (1)));
70 int kw_cmp(const void *, const void *);
76 TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
78 TAILQ_ENTRY(sym) entry;
85 int symset(const char *, const char *, int);
86 char *symget(const char *);
90 static struct gotwebd *gotwebd;
91 static struct server *new_srv;
92 static struct server *conf_new_server(const char *);
93 int getservice(const char *);
96 int get_addrs(const char *, const char *, struct server *);
97 int addr_dup_check(struct addresslist *, struct address *,
98 const char *, const char *);
99 int add_addr(struct server *, struct address *);
111 %token LISTEN WWW_PATH MAX_REPOS SITE_NAME SITE_OWNER SITE_LINK LOGO
112 %token LOGO_URL SHOW_REPO_OWNER SHOW_REPO_AGE SHOW_REPO_DESCRIPTION
113 %token MAX_REPOS_DISPLAY REPOS_PATH MAX_COMMITS_DISPLAY ON ERROR
114 %token SHOW_SITE_OWNER SHOW_REPO_CLONEURL PORT PREFORK RESPECT_EXPORTOK
115 %token UNIX_SOCKET UNIX_SOCKET_NAME SERVER CHROOT CUSTOM_CSS SOCKET
117 %token <v.string> STRING
118 %token <v.number> NUMBER
119 %type <v.number> boolean
120 %type <v.string> listen_addr
124 grammar : /* empty */
126 | grammar varset '\n'
128 | grammar server '\n'
129 | grammar error '\n' { file->errors++; }
132 varset : STRING '=' STRING {
135 if (isspace((unsigned char)*s)) {
136 yyerror("macro name cannot contain "
143 if (symset($1, $3, 0) == -1)
144 fatal("cannot store variable");
151 if (strcasecmp($1, "1") == 0 ||
152 strcasecmp($1, "on") == 0)
154 else if (strcasecmp($1, "0") == 0 ||
155 strcasecmp($1, "off") == 0)
158 yyerror("invalid boolean value '%s'", $1);
166 if ($1 != 0 && $1 != 1) {
167 yyerror("invalid boolean value '%lld'", $1);
174 listen_addr : '*' { $$ = NULL; }
178 main : PREFORK NUMBER {
179 if ($2 <= 0 || $2 > PROC_MAX_INSTANCES) {
180 yyerror("prefork is %s: %lld",
181 $2 <= 0 ? "too small" : "too large", $2);
184 gotwebd->prefork_gotwebd = $2;
188 yyerror("chroot path can't be an empty"
194 n = strlcpy(gotwebd->httpd_chroot, $2,
195 sizeof(gotwebd->httpd_chroot));
196 if (n >= sizeof(gotwebd->httpd_chroot)) {
197 yyerror("%s: httpd_chroot truncated", __func__);
203 | UNIX_SOCKET boolean {
204 gotwebd->unix_socket = $2;
206 | UNIX_SOCKET_NAME STRING {
207 n = snprintf(gotwebd->unix_socket_name,
208 sizeof(gotwebd->unix_socket_name), "%s%s",
209 gotwebd->httpd_chroot, $2);
211 (size_t)n >= sizeof(gotwebd->unix_socket_name)) {
212 yyerror("%s: unix_socket_name truncated",
221 server : SERVER STRING {
224 TAILQ_FOREACH(srv, &gotwebd->servers, entry) {
225 if (strcmp(srv->name, $2) == 0) {
226 yyerror("server name exists '%s'", $2);
232 new_srv = conf_new_server($2);
233 log_debug("adding server %s", $2);
239 TAILQ_FOREACH(srv, &gotwebd->servers, entry) {
240 if (strcmp(srv->name, $2) == 0) {
241 yyerror("server name exists '%s'", $2);
247 new_srv = conf_new_server($2);
248 log_debug("adding server %s", $2);
250 } '{' optnl serveropts2 '}' {
254 serveropts1 : REPOS_PATH STRING {
255 n = strlcpy(new_srv->repos_path, $2,
256 sizeof(new_srv->repos_path));
257 if (n >= sizeof(new_srv->repos_path)) {
258 yyerror("%s: repos_path truncated", __func__);
265 n = strlcpy(new_srv->site_name, $2,
266 sizeof(new_srv->site_name));
267 if (n >= sizeof(new_srv->site_name)) {
268 yyerror("%s: site_name truncated", __func__);
274 | SITE_OWNER STRING {
275 n = strlcpy(new_srv->site_owner, $2,
276 sizeof(new_srv->site_owner));
277 if (n >= sizeof(new_srv->site_owner)) {
278 yyerror("%s: site_owner truncated", __func__);
285 n = strlcpy(new_srv->site_link, $2,
286 sizeof(new_srv->site_link));
287 if (n >= sizeof(new_srv->site_link)) {
288 yyerror("%s: site_link truncated", __func__);
295 n = strlcpy(new_srv->logo, $2, sizeof(new_srv->logo));
296 if (n >= sizeof(new_srv->logo)) {
297 yyerror("%s: logo truncated", __func__);
304 n = strlcpy(new_srv->logo_url, $2,
305 sizeof(new_srv->logo_url));
306 if (n >= sizeof(new_srv->logo_url)) {
307 yyerror("%s: logo_url truncated", __func__);
313 | CUSTOM_CSS STRING {
314 n = strlcpy(new_srv->custom_css, $2,
315 sizeof(new_srv->custom_css));
316 if (n >= sizeof(new_srv->custom_css)) {
317 yyerror("%s: custom_css truncated", __func__);
323 | LISTEN ON listen_addr PORT STRING {
324 if (get_addrs($3, $5, new_srv) == -1) {
325 yyerror("could not get addrs");
330 new_srv->fcgi_socket = 1;
332 | LISTEN ON listen_addr PORT NUMBER {
336 n = snprintf(portno, sizeof(portno), "%lld",
338 if (n < 0 || (size_t)n >= sizeof(portno))
339 fatalx("port number too long: %lld",
342 if (get_addrs($3, portno, new_srv) == -1) {
343 yyerror("could not get addrs");
347 new_srv->fcgi_socket = 1;
349 | LISTEN ON SOCKET STRING {
350 if (strcasecmp($4, "off") == 0) {
351 new_srv->unix_socket = 0;
356 new_srv->unix_socket = 1;
358 n = snprintf(new_srv->unix_socket_name,
359 sizeof(new_srv->unix_socket_name), "%s%s",
360 gotwebd->httpd_chroot, $4);
362 (size_t)n >= sizeof(new_srv->unix_socket_name)) {
363 yyerror("%s: unix_socket_name truncated",
372 yyerror("max_repos is too small: %lld", $2);
375 new_srv->max_repos = $2;
377 | SHOW_SITE_OWNER boolean {
378 new_srv->show_site_owner = $2;
380 | SHOW_REPO_OWNER boolean {
381 new_srv->show_repo_owner = $2;
383 | SHOW_REPO_AGE boolean {
384 new_srv->show_repo_age = $2;
386 | SHOW_REPO_DESCRIPTION boolean {
387 new_srv->show_repo_description = $2;
389 | SHOW_REPO_CLONEURL boolean {
390 new_srv->show_repo_cloneurl = $2;
392 | RESPECT_EXPORTOK boolean {
393 new_srv->respect_exportok = $2;
395 | MAX_REPOS_DISPLAY NUMBER {
397 yyerror("max_repos_display is too small: %lld",
401 new_srv->max_repos_display = $2;
403 | MAX_COMMITS_DISPLAY NUMBER {
405 yyerror("max_commits_display is too small:"
409 new_srv->max_commits_display = $2;
413 serveropts2 : serveropts2 serveropts1 nl
420 optnl : '\n' optnl /* zero or more newlines */
432 yyerror(const char *fmt, ...)
439 if (vasprintf(&msg, fmt, ap) == -1)
440 fatalx("yyerror vasprintf");
442 logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
448 kw_cmp(const void *k, const void *e)
450 return (strcmp(k, ((const struct keywords *)e)->k_name));
456 /* This has to be sorted always. */
457 static const struct keywords keywords[] = {
458 { "chroot", CHROOT },
459 { "custom_css", CUSTOM_CSS },
460 { "listen", LISTEN },
462 { "logo_url", LOGO_URL },
463 { "max_commits_display", MAX_COMMITS_DISPLAY },
464 { "max_repos", MAX_REPOS },
465 { "max_repos_display", MAX_REPOS_DISPLAY },
468 { "prefork", PREFORK },
469 { "repos_path", REPOS_PATH },
470 { "respect_exportok", RESPECT_EXPORTOK },
471 { "server", SERVER },
472 { "show_repo_age", SHOW_REPO_AGE },
473 { "show_repo_cloneurl", SHOW_REPO_CLONEURL },
474 { "show_repo_description", SHOW_REPO_DESCRIPTION },
475 { "show_repo_owner", SHOW_REPO_OWNER },
476 { "show_site_owner", SHOW_SITE_OWNER },
477 { "site_link", SITE_LINK },
478 { "site_name", SITE_NAME },
479 { "site_owner", SITE_OWNER },
480 { "socket", SOCKET },
481 { "unix_socket", UNIX_SOCKET },
482 { "unix_socket_name", UNIX_SOCKET_NAME },
484 const struct keywords *p;
486 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
487 sizeof(keywords[0]), kw_cmp);
495 #define MAXPUSHBACK 128
497 unsigned char *parsebuf;
499 unsigned char pushback_buffer[MAXPUSHBACK];
500 int pushback_index = 0;
508 /* Read character from the parsebuffer instead of input. */
509 if (parseindex >= 0) {
510 c = parsebuf[parseindex++];
519 return (pushback_buffer[--pushback_index]);
522 c = getc(file->stream);
524 yyerror("reached end of file while parsing "
529 c = getc(file->stream);
531 next = getc(file->stream);
536 yylval.lineno = file->lineno;
538 c = getc(file->stream);
554 if (pushback_index < MAXPUSHBACK-1)
555 return (pushback_buffer[pushback_index++] = c);
567 /* Skip to either EOF or the first real EOL. */
570 c = pushback_buffer[--pushback_index];
586 unsigned char buf[8096];
587 unsigned char *p, *val;
594 while (c == ' ' || c == '\t')
595 c = lgetc(0); /* nothing */
597 yylval.lineno = file->lineno;
600 while (c != '\n' && c != EOF)
601 c = lgetc(0); /* nothing */
603 if (c == '$' && parsebuf == NULL) {
609 if (p + 1 >= buf + sizeof(buf) - 1) {
610 yyerror("string too long");
613 if (isalnum(c) || c == '_') {
623 yyerror("macro '%s' not defined", buf);
642 } else if (c == '\\') {
643 next = lgetc(quotec);
646 if (next == quotec || c == ' ' || c == '\t')
648 else if (next == '\n') {
653 } else if (c == quotec) {
656 } else if (c == '\0') {
657 yyerror("syntax error");
660 if (p + 1 >= buf + sizeof(buf) - 1) {
661 yyerror("string too long");
666 yylval.v.string = strdup(buf);
667 if (yylval.v.string == NULL)
668 err(1, "yylex: strdup");
672 #define allowed_to_end_number(x) \
673 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
675 if (c == '-' || isdigit(c)) {
678 if ((unsigned)(p-buf) >= sizeof(buf)) {
679 yyerror("string too long");
683 } while (c != EOF && isdigit(c));
685 if (p == buf + 1 && buf[0] == '-')
687 if (c == EOF || allowed_to_end_number(c)) {
688 const char *errstr = NULL;
691 yylval.v.number = strtonum(buf, LLONG_MIN,
694 yyerror("\"%s\" invalid number: %s",
709 #define allowed_in_string(x) \
710 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
711 x != '{' && x != '}' && \
712 x != '!' && x != '=' && x != '#' && \
715 if (isalnum(c) || c == ':' || c == '_') {
718 if ((unsigned)(p-buf) >= sizeof(buf)) {
719 yyerror("string too long");
723 } while (c != EOF && (allowed_in_string(c)));
727 if (token == STRING) {
728 yylval.v.string = strdup(buf);
729 if (yylval.v.string == NULL)
730 err(1, "yylex: strdup");
735 yylval.lineno = file->lineno;
744 check_file_secrecy(int fd, const char *fname)
748 if (fstat(fd, &st)) {
749 log_warn("cannot stat %s", fname);
752 if (st.st_uid != 0 && st.st_uid != getuid()) {
753 log_warnx("%s: owner not root or current user", fname);
756 if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
757 log_warnx("%s: group writable or world read/writable", fname);
764 newfile(const char *name, int secret)
768 nfile = calloc(1, sizeof(struct file));
773 nfile->name = strdup(name);
774 if (nfile->name == NULL) {
779 nfile->stream = fopen(nfile->name, "r");
780 if (nfile->stream == NULL) {
781 /* no warning, we don't require a conf file */
786 check_file_secrecy(fileno(nfile->stream), nfile->name)) {
787 fclose(nfile->stream);
797 closefile(struct file *xfile)
799 fclose(xfile->stream);
805 add_default_server(void)
807 new_srv = conf_new_server(D_SITENAME);
808 log_debug("%s: adding default server %s", __func__, D_SITENAME);
812 parse_config(const char *filename, struct gotwebd *env)
814 struct sym *sym, *next;
816 if (config_init(env) == -1)
817 fatalx("failed to initialize configuration");
821 file = newfile(filename, 0);
823 add_default_server();
824 sockets_parse_sockets(env);
825 /* just return, as we don't require a conf file */
830 errors = file->errors;
833 /* Free macros and check which have not been used. */
834 TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
835 if ((gotwebd->gotwebd_verbose > 1) && !sym->used)
836 fprintf(stderr, "warning: macro '%s' not used\n",
841 TAILQ_REMOVE(&symhead, sym, entry);
849 /* just add default server if no config specified */
850 if (gotwebd->server_cnt == 0)
851 add_default_server();
853 /* setup our listening sockets */
854 sockets_parse_sockets(env);
860 conf_new_server(const char *name)
862 struct server *srv = NULL;
864 srv = calloc(1, sizeof(*srv));
866 fatalx("%s: calloc", __func__);
868 n = strlcpy(srv->name, name, sizeof(srv->name));
869 if (n >= sizeof(srv->name))
870 fatalx("%s: strlcpy", __func__);
871 n = snprintf(srv->unix_socket_name,
872 sizeof(srv->unix_socket_name), "%s%s", D_HTTPD_CHROOT,
874 if (n < 0 || (size_t)n >= sizeof(srv->unix_socket_name))
875 fatalx("%s: snprintf", __func__);
876 n = strlcpy(srv->repos_path, D_GOTPATH,
877 sizeof(srv->repos_path));
878 if (n >= sizeof(srv->repos_path))
879 fatalx("%s: strlcpy", __func__);
880 n = strlcpy(srv->site_name, D_SITENAME,
881 sizeof(srv->site_name));
882 if (n >= sizeof(srv->site_name))
883 fatalx("%s: strlcpy", __func__);
884 n = strlcpy(srv->site_owner, D_SITEOWNER,
885 sizeof(srv->site_owner));
886 if (n >= sizeof(srv->site_owner))
887 fatalx("%s: strlcpy", __func__);
888 n = strlcpy(srv->site_link, D_SITELINK,
889 sizeof(srv->site_link));
890 if (n >= sizeof(srv->site_link))
891 fatalx("%s: strlcpy", __func__);
892 n = strlcpy(srv->logo, D_GOTLOGO,
894 if (n >= sizeof(srv->logo))
895 fatalx("%s: strlcpy", __func__);
896 n = strlcpy(srv->logo_url, D_GOTURL, sizeof(srv->logo_url));
897 if (n >= sizeof(srv->logo_url))
898 fatalx("%s: strlcpy", __func__);
899 n = strlcpy(srv->custom_css, D_GOTWEBCSS, sizeof(srv->custom_css));
900 if (n >= sizeof(srv->custom_css))
901 fatalx("%s: strlcpy", __func__);
903 srv->show_site_owner = D_SHOWSOWNER;
904 srv->show_repo_owner = D_SHOWROWNER;
905 srv->show_repo_age = D_SHOWAGE;
906 srv->show_repo_description = D_SHOWDESC;
907 srv->show_repo_cloneurl = D_SHOWURL;
908 srv->respect_exportok = D_RESPECTEXPORTOK;
910 srv->max_repos_display = D_MAXREPODISP;
911 srv->max_commits_display = D_MAXCOMMITDISP;
912 srv->max_repos = D_MAXREPO;
914 srv->unix_socket = 1;
915 srv->fcgi_socket = 0;
917 TAILQ_INIT(&srv->al);
918 TAILQ_INSERT_TAIL(&gotwebd->servers, srv, entry);
919 gotwebd->server_cnt++;
925 symset(const char *nam, const char *val, int persist)
929 TAILQ_FOREACH(sym, &symhead, entry) {
930 if (strcmp(nam, sym->nam) == 0)
935 if (sym->persist == 1)
940 TAILQ_REMOVE(&symhead, sym, entry);
944 sym = calloc(1, sizeof(*sym));
948 sym->nam = strdup(nam);
949 if (sym->nam == NULL) {
953 sym->val = strdup(val);
954 if (sym->val == NULL) {
960 sym->persist = persist;
961 TAILQ_INSERT_TAIL(&symhead, sym, entry);
966 cmdline_symset(char *s)
971 val = strrchr(s, '=');
975 sym = strndup(s, val - s);
977 fatal("%s: strndup", __func__);
979 ret = symset(sym, val + 1, 1);
986 symget(const char *nam)
990 TAILQ_FOREACH(sym, &symhead, entry) {
991 if (strcmp(nam, sym->nam) == 0) {
1000 get_addrs(const char *hostname, const char *servname, struct server *new_srv)
1002 struct addrinfo hints, *res0, *res;
1004 struct sockaddr_in *sin;
1005 struct sockaddr_in6 *sin6;
1008 memset(&hints, 0, sizeof(hints));
1009 hints.ai_family = AF_UNSPEC;
1010 hints.ai_socktype = SOCK_STREAM;
1011 hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
1012 error = getaddrinfo(hostname, servname, &hints, &res0);
1014 log_warnx("%s: could not parse \"%s:%s\": %s", __func__,
1015 hostname, servname, gai_strerror(error));
1019 for (res = res0; res; res = res->ai_next) {
1020 if ((h = calloc(1, sizeof(*h))) == NULL)
1023 if (hostname == NULL) {
1024 strlcpy(h->ifname, "*", sizeof(h->ifname));
1026 if (strlcpy(h->ifname, hostname, sizeof(h->ifname)) >=
1027 sizeof(h->ifname)) {
1028 log_warnx("%s: address truncated: %s",
1029 __func__, hostname);
1036 h->ai_family = res->ai_family;
1037 h->ai_socktype = res->ai_socktype;
1038 h->ai_protocol = res->ai_protocol;
1039 memcpy(&h->ss, res->ai_addr, res->ai_addrlen);
1040 h->slen = res->ai_addrlen;
1042 switch (res->ai_family) {
1044 sin = (struct sockaddr_in *)res->ai_addr;
1045 h->port = ntohs(sin->sin_port);
1048 sin6 = (struct sockaddr_in6 *)res->ai_addr;
1049 h->port = ntohs(sin6->sin6_port);
1052 fatalx("unknown address family %d", res->ai_family);
1055 if (add_addr(new_srv, h))
1063 addr_dup_check(struct addresslist *al, struct address *h, const char *new_srv,
1064 const char *other_srv)
1068 char buf[INET6_ADDRSTRLEN];
1069 const char *addrstr;
1071 TAILQ_FOREACH(a, al, entry) {
1072 if (a->ai_family != h->ai_family ||
1073 a->ai_socktype != h->ai_socktype ||
1074 a->ai_protocol != h->ai_protocol ||
1075 a->slen != h->slen ||
1076 memcmp(&a->ss, &h->ss, a->slen) != 0)
1079 switch (h->ss.ss_family) {
1081 ia = &((struct sockaddr_in *)(&h->ss))->sin_addr;
1084 ia = &((struct sockaddr_in6 *)(&h->ss))->sin6_addr;
1087 yyerror("unknown address family: %d", h->ss.ss_family);
1090 addrstr = inet_ntop(h->ss.ss_family, ia, buf, sizeof(buf));
1093 yyerror("server %s: duplicate fcgi listen "
1094 "address %s:%d, already used by server %s",
1095 new_srv, addrstr, h->port, other_srv);
1097 log_warnx("server: %s: duplicate fcgi listen "
1098 "address %s:%d", new_srv, addrstr, h->port);
1102 yyerror("server: %s: duplicate fcgi listen "
1103 "address, already used by server %s",
1104 new_srv, other_srv);
1106 log_warnx("server %s: duplicate fcgi listen "
1107 "address", new_srv);
1118 add_addr(struct server *new_srv, struct address *h)
1122 /* Address cannot be shared between different servers. */
1123 TAILQ_FOREACH(srv, &gotwebd->servers, entry) {
1126 if (addr_dup_check(&srv->al, h, new_srv->name, srv->name))
1130 /* Tolerate duplicate address lines within the scope of a server. */
1131 if (addr_dup_check(&new_srv->al, h, NULL, NULL) == 0)
1132 TAILQ_INSERT_TAIL(&new_srv->al, h, entry);