op public repos

Blame

Date:: Sun Oct 23 00:37:19 2022 UTC
Message:: introduce gotd(8), a Git repository server reachable via ssh(1) This is an initial barebones implementation which provides the absolute minimum of functionality required to serve got(1) and git(1) clients. Basic fetch/send functionality has been tested and seems to work here, but this server is not yet expected to be stable. More testing is welcome. See the man pages for setup instructions. The current design uses one reader and one writer process per repository, which will have to be extended to N readers and N writers in the future. At startup, each process will chroot(2) into its assigned repository. This works because gotd(8) can only be started as root, and will then fork+exec, chroot, and privdrop. At present the parent process runs with the following pledge(2) promises: "stdio rpath wpath cpath proc getpw sendfd recvfd fattr flock unix unveil" The parent is the only process able to modify the repository in a way that becomes visible to Git clients. The parent uses unveil(2) to restrict its view of the filesystem to /tmp and the repositories listed in the configuration file gotd.conf(5). Per-repository chroot(2) processes use "stdio rpath sendfd recvfd". The writer defers to the parent for modifying references in the repository to point at newly uploaded commits. The reader is fine without such help, because Git repositories can be read without having to create any lock-files. gotd(8) requires a dedicated user ID, which should own repositories on the filesystem, and a separate secondary group, which should not have filesystem-level repository access, and must be allowed access to the gotd(8) socket. To obtain Git repository access, users must be members of this secondary group, and must have their login shell set to gotsh(1). gotsh(1) connects to the gotd(8) socket and speaks Git-protocol towards the client on the other end of the SSH connection. gotsh(1) is not an interactive command shell. At present, authenticated clients are granted read/write access to all repositories and all references (except for the "refs/got/" and the "refs/remotes/" namespaces, which are already being protected from modification). While complicated access control mechanism are not a design goal, making it possible to safely offer anonymous Git repository access over ssh(1) is on the road map.
Actions:: History | Blob | Raw File
  1 13b2bc37 2022-10-23 stsp /*
  2 13b2bc37 2022-10-23 stsp  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 13b2bc37 2022-10-23 stsp  * Copyright (c) 2016-2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
  4 13b2bc37 2022-10-23 stsp  * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
  5 13b2bc37 2022-10-23 stsp  * Copyright (c) 2004 Ryan McBride <mcbride@openbsd.org>
  6 13b2bc37 2022-10-23 stsp  * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
  7 13b2bc37 2022-10-23 stsp  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
  8 13b2bc37 2022-10-23 stsp  * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
  9 13b2bc37 2022-10-23 stsp  * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
 10 13b2bc37 2022-10-23 stsp  *
 11 13b2bc37 2022-10-23 stsp  * Permission to use, copy, modify, and distribute this software for any
 12 13b2bc37 2022-10-23 stsp  * purpose with or without fee is hereby granted, provided that the above
 13 13b2bc37 2022-10-23 stsp  * copyright notice and this permission notice appear in all copies.
 14 13b2bc37 2022-10-23 stsp  *
 15 13b2bc37 2022-10-23 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 16 13b2bc37 2022-10-23 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 17 13b2bc37 2022-10-23 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 18 13b2bc37 2022-10-23 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 19 13b2bc37 2022-10-23 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 20 13b2bc37 2022-10-23 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 21 13b2bc37 2022-10-23 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 22 13b2bc37 2022-10-23 stsp  */
 23 13b2bc37 2022-10-23 stsp 
 24 13b2bc37 2022-10-23 stsp %{
 25 13b2bc37 2022-10-23 stsp #include <sys/time.h>
 26 13b2bc37 2022-10-23 stsp #include <sys/types.h>
 27 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
 28 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
 29 13b2bc37 2022-10-23 stsp 
 30 13b2bc37 2022-10-23 stsp #include <ctype.h>
 31 13b2bc37 2022-10-23 stsp #include <err.h>
 32 13b2bc37 2022-10-23 stsp #include <errno.h>
 33 13b2bc37 2022-10-23 stsp #include <event.h>
 34 13b2bc37 2022-10-23 stsp #include <imsg.h>
 35 13b2bc37 2022-10-23 stsp #include <limits.h>
 36 13b2bc37 2022-10-23 stsp #include <sha1.h>
 37 13b2bc37 2022-10-23 stsp #include <stdarg.h>
 38 13b2bc37 2022-10-23 stsp #include <stdlib.h>
 39 13b2bc37 2022-10-23 stsp #include <stdio.h>
 40 13b2bc37 2022-10-23 stsp #include <string.h>
 41 13b2bc37 2022-10-23 stsp #include <syslog.h>
 42 13b2bc37 2022-10-23 stsp #include <unistd.h>
 43 13b2bc37 2022-10-23 stsp 
 44 13b2bc37 2022-10-23 stsp #include "got_error.h"
 45 13b2bc37 2022-10-23 stsp #include "got_path.h"
 46 13b2bc37 2022-10-23 stsp 
 47 13b2bc37 2022-10-23 stsp #include "log.h"
 48 13b2bc37 2022-10-23 stsp #include "gotd.h"
 49 13b2bc37 2022-10-23 stsp 
 50 13b2bc37 2022-10-23 stsp TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
 51 13b2bc37 2022-10-23 stsp static struct file {
 52 13b2bc37 2022-10-23 stsp 	TAILQ_ENTRY(file)	 entry;
 53 13b2bc37 2022-10-23 stsp 	FILE			*stream;
 54 13b2bc37 2022-10-23 stsp 	char			*name;
 55 13b2bc37 2022-10-23 stsp 	int			 lineno;
 56 13b2bc37 2022-10-23 stsp 	int			 errors;
 57 13b2bc37 2022-10-23 stsp } *file;
 58 13b2bc37 2022-10-23 stsp struct file	*newfile(const char *, int);
 59 13b2bc37 2022-10-23 stsp static void	 closefile(struct file *);
 60 13b2bc37 2022-10-23 stsp int		 check_file_secrecy(int, const char *);
 61 13b2bc37 2022-10-23 stsp int		 yyparse(void);
 62 13b2bc37 2022-10-23 stsp int		 yylex(void);
 63 13b2bc37 2022-10-23 stsp int		 yyerror(const char *, ...)
 64 13b2bc37 2022-10-23 stsp     __attribute__((__format__ (printf, 1, 2)))
 65 13b2bc37 2022-10-23 stsp     __attribute__((__nonnull__ (1)));
 66 13b2bc37 2022-10-23 stsp int		 kw_cmp(const void *, const void *);
 67 13b2bc37 2022-10-23 stsp int		 lookup(char *);
 68 13b2bc37 2022-10-23 stsp int		 lgetc(int);
 69 13b2bc37 2022-10-23 stsp int		 lungetc(int);
 70 13b2bc37 2022-10-23 stsp int		 findeol(void);
 71 13b2bc37 2022-10-23 stsp 
 72 13b2bc37 2022-10-23 stsp TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
 73 13b2bc37 2022-10-23 stsp struct sym {
 74 13b2bc37 2022-10-23 stsp 	TAILQ_ENTRY(sym)	 entry;
 75 13b2bc37 2022-10-23 stsp 	int			 used;
 76 13b2bc37 2022-10-23 stsp 	int			 persist;
 77 13b2bc37 2022-10-23 stsp 	char			*nam;
 78 13b2bc37 2022-10-23 stsp 	char			*val;
 79 13b2bc37 2022-10-23 stsp };
 80 13b2bc37 2022-10-23 stsp 
 81 13b2bc37 2022-10-23 stsp int	 symset(const char *, const char *, int);
 82 13b2bc37 2022-10-23 stsp char	*symget(const char *);
 83 13b2bc37 2022-10-23 stsp 
 84 13b2bc37 2022-10-23 stsp static int		 errors;
 85 13b2bc37 2022-10-23 stsp 
 86 13b2bc37 2022-10-23 stsp static struct gotd		*gotd;
 87 13b2bc37 2022-10-23 stsp static struct gotd_repo		*new_repo;
 88 13b2bc37 2022-10-23 stsp static struct gotd_repo		*conf_new_repo(const char *);
 89 13b2bc37 2022-10-23 stsp static enum gotd_procid		 gotd_proc_id;
 90 13b2bc37 2022-10-23 stsp 
 91 13b2bc37 2022-10-23 stsp typedef struct {
 92 13b2bc37 2022-10-23 stsp 	union {
 93 13b2bc37 2022-10-23 stsp 		long long	 number;
 94 13b2bc37 2022-10-23 stsp 		char		*string;
 95 13b2bc37 2022-10-23 stsp 	} v;
 96 13b2bc37 2022-10-23 stsp 	int lineno;
 97 13b2bc37 2022-10-23 stsp } YYSTYPE;
 98 13b2bc37 2022-10-23 stsp 
 99 13b2bc37 2022-10-23 stsp %}
100 13b2bc37 2022-10-23 stsp 
101 13b2bc37 2022-10-23 stsp %token	PATH ERROR ON UNIX_SOCKET UNIX_GROUP USER REPOSITORY
102 13b2bc37 2022-10-23 stsp 
103 13b2bc37 2022-10-23 stsp %token	<v.string>	STRING
104 13b2bc37 2022-10-23 stsp %token	<v.number>	NUMBER
105 13b2bc37 2022-10-23 stsp %type	<v.number>	boolean
106 13b2bc37 2022-10-23 stsp 
107 13b2bc37 2022-10-23 stsp %%
108 13b2bc37 2022-10-23 stsp 
109 13b2bc37 2022-10-23 stsp grammar		:
110 13b2bc37 2022-10-23 stsp 		| grammar '\n'
111 13b2bc37 2022-10-23 stsp 		| grammar main '\n'
112 13b2bc37 2022-10-23 stsp 		| grammar repository '\n'
113 13b2bc37 2022-10-23 stsp 		;
114 13b2bc37 2022-10-23 stsp 
115 13b2bc37 2022-10-23 stsp boolean		: STRING {
116 13b2bc37 2022-10-23 stsp 			if (strcasecmp($1, "1") == 0 ||
117 13b2bc37 2022-10-23 stsp 			    strcasecmp($1, "yes") == 0 ||
118 13b2bc37 2022-10-23 stsp 			    strcasecmp($1, "on") == 0)
119 13b2bc37 2022-10-23 stsp 				$$ = 1;
120 13b2bc37 2022-10-23 stsp 			else if (strcasecmp($1, "0") == 0 ||
121 13b2bc37 2022-10-23 stsp 			    strcasecmp($1, "off") == 0 ||
122 13b2bc37 2022-10-23 stsp 			    strcasecmp($1, "no") == 0)
123 13b2bc37 2022-10-23 stsp 				$$ = 0;
124 13b2bc37 2022-10-23 stsp 			else {
125 13b2bc37 2022-10-23 stsp 				yyerror("invalid boolean value '%s'", $1);
126 13b2bc37 2022-10-23 stsp 				free($1);
127 13b2bc37 2022-10-23 stsp 				YYERROR;
128 13b2bc37 2022-10-23 stsp 			}
129 13b2bc37 2022-10-23 stsp 			free($1);
130 13b2bc37 2022-10-23 stsp 		}
131 13b2bc37 2022-10-23 stsp 		| ON { $$ = 1; }
132 13b2bc37 2022-10-23 stsp 		| NUMBER { $$ = $1; }
133 13b2bc37 2022-10-23 stsp 		;
134 13b2bc37 2022-10-23 stsp 
135 13b2bc37 2022-10-23 stsp main		: UNIX_SOCKET STRING {
136 13b2bc37 2022-10-23 stsp 			if (gotd_proc_id == PROC_GOTD) {
137 13b2bc37 2022-10-23 stsp 				if (strlcpy(gotd->unix_socket_path, $2,
138 13b2bc37 2022-10-23 stsp 				    sizeof(gotd->unix_socket_path)) >=
139 13b2bc37 2022-10-23 stsp 				    sizeof(gotd->unix_socket_path)) {
140 13b2bc37 2022-10-23 stsp 					yyerror("%s: unix socket path too long",
141 13b2bc37 2022-10-23 stsp 					    __func__);
142 13b2bc37 2022-10-23 stsp 					free($2);
143 13b2bc37 2022-10-23 stsp 					YYERROR;
144 13b2bc37 2022-10-23 stsp 				}
145 13b2bc37 2022-10-23 stsp 			}
146 13b2bc37 2022-10-23 stsp 			free($2);
147 13b2bc37 2022-10-23 stsp 		}
148 13b2bc37 2022-10-23 stsp 		| UNIX_GROUP STRING {
149 13b2bc37 2022-10-23 stsp 			if (strlcpy(gotd->unix_group_name, $2,
150 13b2bc37 2022-10-23 stsp 			    sizeof(gotd->unix_group_name)) >=
151 13b2bc37 2022-10-23 stsp 			    sizeof(gotd->unix_group_name)) {
152 13b2bc37 2022-10-23 stsp 				yyerror("%s: unix group name too long",
153 13b2bc37 2022-10-23 stsp 				    __func__);
154 13b2bc37 2022-10-23 stsp 				free($2);
155 13b2bc37 2022-10-23 stsp 				YYERROR;
156 13b2bc37 2022-10-23 stsp 			}
157 13b2bc37 2022-10-23 stsp 			free($2);
158 13b2bc37 2022-10-23 stsp 		}
159 13b2bc37 2022-10-23 stsp 		| USER STRING {
160 13b2bc37 2022-10-23 stsp 			if (strlcpy(gotd->user_name, $2,
161 13b2bc37 2022-10-23 stsp 			    sizeof(gotd->user_name)) >=
162 13b2bc37 2022-10-23 stsp 			    sizeof(gotd->user_name)) {
163 13b2bc37 2022-10-23 stsp 				yyerror("%s: user name too long", __func__);
164 13b2bc37 2022-10-23 stsp 				free($2);
165 13b2bc37 2022-10-23 stsp 				YYERROR;
166 13b2bc37 2022-10-23 stsp 			}
167 13b2bc37 2022-10-23 stsp 			free($2);
168 13b2bc37 2022-10-23 stsp 		}
169 13b2bc37 2022-10-23 stsp 		;
170 13b2bc37 2022-10-23 stsp 
171 13b2bc37 2022-10-23 stsp repository	: REPOSITORY STRING {
172 13b2bc37 2022-10-23 stsp 			struct gotd_repo *repo;
173 13b2bc37 2022-10-23 stsp 
174 13b2bc37 2022-10-23 stsp 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
175 13b2bc37 2022-10-23 stsp 				if (strcmp(repo->name, $2) == 0) {
176 13b2bc37 2022-10-23 stsp 					yyerror("duplicate repository '%s'", $2);
177 13b2bc37 2022-10-23 stsp 					free($2);
178 13b2bc37 2022-10-23 stsp 					YYERROR;
179 13b2bc37 2022-10-23 stsp 				}
180 13b2bc37 2022-10-23 stsp 			}
181 13b2bc37 2022-10-23 stsp 
182 13b2bc37 2022-10-23 stsp 			if (gotd_proc_id == PROC_GOTD) {
183 13b2bc37 2022-10-23 stsp 				new_repo = conf_new_repo($2);
184 13b2bc37 2022-10-23 stsp 			}
185 13b2bc37 2022-10-23 stsp 			free($2);
186 13b2bc37 2022-10-23 stsp 		}
187 13b2bc37 2022-10-23 stsp 		| REPOSITORY STRING {
188 13b2bc37 2022-10-23 stsp 			struct gotd_repo *repo;
189 13b2bc37 2022-10-23 stsp 
190 13b2bc37 2022-10-23 stsp 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
191 13b2bc37 2022-10-23 stsp 				if (strcmp(repo->name, $2) == 0) {
192 13b2bc37 2022-10-23 stsp 					yyerror("duplicate repository '%s'", $2);
193 13b2bc37 2022-10-23 stsp 					free($2);
194 13b2bc37 2022-10-23 stsp 					YYERROR;
195 13b2bc37 2022-10-23 stsp 				}
196 13b2bc37 2022-10-23 stsp 			}
197 13b2bc37 2022-10-23 stsp 
198 13b2bc37 2022-10-23 stsp 			if (gotd_proc_id == PROC_GOTD) {
199 13b2bc37 2022-10-23 stsp 				new_repo = conf_new_repo($2);
200 13b2bc37 2022-10-23 stsp 			}
201 13b2bc37 2022-10-23 stsp 			free($2);
202 13b2bc37 2022-10-23 stsp 		} '{' optnl repoopts2 '}' {
203 13b2bc37 2022-10-23 stsp 		}
204 13b2bc37 2022-10-23 stsp 		;
205 13b2bc37 2022-10-23 stsp 
206 13b2bc37 2022-10-23 stsp repoopts1	: PATH STRING {
207 13b2bc37 2022-10-23 stsp 			if (gotd_proc_id == PROC_GOTD) {
208 13b2bc37 2022-10-23 stsp 				if (!got_path_is_absolute($2)) {
209 13b2bc37 2022-10-23 stsp 					yyerror("%s: path %s is not absolute",
210 13b2bc37 2022-10-23 stsp 					    __func__, $2);
211 13b2bc37 2022-10-23 stsp 					free($2);
212 13b2bc37 2022-10-23 stsp 					YYERROR;
213 13b2bc37 2022-10-23 stsp 				}
214 13b2bc37 2022-10-23 stsp 				if (strlcpy(new_repo->path, $2,
215 13b2bc37 2022-10-23 stsp 				    sizeof(new_repo->path)) >=
216 13b2bc37 2022-10-23 stsp 				    sizeof(new_repo->path)) {
217 13b2bc37 2022-10-23 stsp 					yyerror("%s: path truncated", __func__);
218 13b2bc37 2022-10-23 stsp 					free($2);
219 13b2bc37 2022-10-23 stsp 					YYERROR;
220 13b2bc37 2022-10-23 stsp 				}
221 13b2bc37 2022-10-23 stsp 			}
222 13b2bc37 2022-10-23 stsp 			free($2);
223 13b2bc37 2022-10-23 stsp 		}
224 13b2bc37 2022-10-23 stsp 		;
225 13b2bc37 2022-10-23 stsp 
226 13b2bc37 2022-10-23 stsp repoopts2	: repoopts2 repoopts1 nl
227 13b2bc37 2022-10-23 stsp 		| repoopts1 optnl
228 13b2bc37 2022-10-23 stsp 		;
229 13b2bc37 2022-10-23 stsp 
230 13b2bc37 2022-10-23 stsp nl		: '\n' optnl
231 13b2bc37 2022-10-23 stsp 		;
232 13b2bc37 2022-10-23 stsp 
233 13b2bc37 2022-10-23 stsp optnl		: '\n' optnl		/* zero or more newlines */
234 13b2bc37 2022-10-23 stsp 		| /* empty */
235 13b2bc37 2022-10-23 stsp 		;
236 13b2bc37 2022-10-23 stsp 
237 13b2bc37 2022-10-23 stsp %%
238 13b2bc37 2022-10-23 stsp 
239 13b2bc37 2022-10-23 stsp struct keywords {
240 13b2bc37 2022-10-23 stsp 	const char	*k_name;
241 13b2bc37 2022-10-23 stsp 	int		 k_val;
242 13b2bc37 2022-10-23 stsp };
243 13b2bc37 2022-10-23 stsp 
244 13b2bc37 2022-10-23 stsp int
245 13b2bc37 2022-10-23 stsp yyerror(const char *fmt, ...)
246 13b2bc37 2022-10-23 stsp {
247 13b2bc37 2022-10-23 stsp 	va_list ap;
248 13b2bc37 2022-10-23 stsp 	char *msg;
249 13b2bc37 2022-10-23 stsp 
250 13b2bc37 2022-10-23 stsp 	file->errors++;
251 13b2bc37 2022-10-23 stsp 	va_start(ap, fmt);
252 13b2bc37 2022-10-23 stsp 	if (vasprintf(&msg, fmt, ap) == -1)
253 13b2bc37 2022-10-23 stsp 		fatalx("yyerror vasprintf");
254 13b2bc37 2022-10-23 stsp 	va_end(ap);
255 13b2bc37 2022-10-23 stsp 	logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
256 13b2bc37 2022-10-23 stsp 	free(msg);
257 13b2bc37 2022-10-23 stsp 	return (0);
258 13b2bc37 2022-10-23 stsp }
259 13b2bc37 2022-10-23 stsp 
260 13b2bc37 2022-10-23 stsp int
261 13b2bc37 2022-10-23 stsp kw_cmp(const void *k, const void *e)
262 13b2bc37 2022-10-23 stsp {
263 13b2bc37 2022-10-23 stsp 	return (strcmp(k, ((const struct keywords *)e)->k_name));
264 13b2bc37 2022-10-23 stsp }
265 13b2bc37 2022-10-23 stsp 
266 13b2bc37 2022-10-23 stsp int
267 13b2bc37 2022-10-23 stsp lookup(char *s)
268 13b2bc37 2022-10-23 stsp {
269 13b2bc37 2022-10-23 stsp 	/* This has to be sorted always. */
270 13b2bc37 2022-10-23 stsp 	static const struct keywords keywords[] = {
271 13b2bc37 2022-10-23 stsp 		{ "on",				ON },
272 13b2bc37 2022-10-23 stsp 		{ "path",			PATH },
273 13b2bc37 2022-10-23 stsp 		{ "repository",			REPOSITORY },
274 13b2bc37 2022-10-23 stsp 		{ "unix_group",			UNIX_GROUP },
275 13b2bc37 2022-10-23 stsp 		{ "unix_socket",		UNIX_SOCKET },
276 13b2bc37 2022-10-23 stsp 		{ "user",			USER },
277 13b2bc37 2022-10-23 stsp 	};
278 13b2bc37 2022-10-23 stsp 	const struct keywords *p;
279 13b2bc37 2022-10-23 stsp 
280 13b2bc37 2022-10-23 stsp 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
281 13b2bc37 2022-10-23 stsp 	    sizeof(keywords[0]), kw_cmp);
282 13b2bc37 2022-10-23 stsp 
283 13b2bc37 2022-10-23 stsp 	if (p)
284 13b2bc37 2022-10-23 stsp 		return (p->k_val);
285 13b2bc37 2022-10-23 stsp 	else
286 13b2bc37 2022-10-23 stsp 		return (STRING);
287 13b2bc37 2022-10-23 stsp }
288 13b2bc37 2022-10-23 stsp 
289 13b2bc37 2022-10-23 stsp #define MAXPUSHBACK	128
290 13b2bc37 2022-10-23 stsp 
291 13b2bc37 2022-10-23 stsp unsigned char *parsebuf;
292 13b2bc37 2022-10-23 stsp int parseindex;
293 13b2bc37 2022-10-23 stsp unsigned char pushback_buffer[MAXPUSHBACK];
294 13b2bc37 2022-10-23 stsp int pushback_index = 0;
295 13b2bc37 2022-10-23 stsp 
296 13b2bc37 2022-10-23 stsp int
297 13b2bc37 2022-10-23 stsp lgetc(int quotec)
298 13b2bc37 2022-10-23 stsp {
299 13b2bc37 2022-10-23 stsp 	int c, next;
300 13b2bc37 2022-10-23 stsp 
301 13b2bc37 2022-10-23 stsp 	if (parsebuf) {
302 13b2bc37 2022-10-23 stsp 		/* Read character from the parsebuffer instead of input. */
303 13b2bc37 2022-10-23 stsp 		if (parseindex >= 0) {
304 13b2bc37 2022-10-23 stsp 			c = parsebuf[parseindex++];
305 13b2bc37 2022-10-23 stsp 			if (c != '\0')
306 13b2bc37 2022-10-23 stsp 				return (c);
307 13b2bc37 2022-10-23 stsp 			parsebuf = NULL;
308 13b2bc37 2022-10-23 stsp 		} else
309 13b2bc37 2022-10-23 stsp 			parseindex++;
310 13b2bc37 2022-10-23 stsp 	}
311 13b2bc37 2022-10-23 stsp 
312 13b2bc37 2022-10-23 stsp 	if (pushback_index)
313 13b2bc37 2022-10-23 stsp 		return (pushback_buffer[--pushback_index]);
314 13b2bc37 2022-10-23 stsp 
315 13b2bc37 2022-10-23 stsp 	if (quotec) {
316 13b2bc37 2022-10-23 stsp 		c = getc(file->stream);
317 13b2bc37 2022-10-23 stsp 		if (c == EOF)
318 13b2bc37 2022-10-23 stsp 			yyerror("reached end of file while parsing "
319 13b2bc37 2022-10-23 stsp 			    "quoted string");
320 13b2bc37 2022-10-23 stsp 		return (c);
321 13b2bc37 2022-10-23 stsp 	}
322 13b2bc37 2022-10-23 stsp 
323 13b2bc37 2022-10-23 stsp 	c = getc(file->stream);
324 13b2bc37 2022-10-23 stsp 	while (c == '\\') {
325 13b2bc37 2022-10-23 stsp 		next = getc(file->stream);
326 13b2bc37 2022-10-23 stsp 		if (next != '\n') {
327 13b2bc37 2022-10-23 stsp 			c = next;
328 13b2bc37 2022-10-23 stsp 			break;
329 13b2bc37 2022-10-23 stsp 		}
330 13b2bc37 2022-10-23 stsp 		yylval.lineno = file->lineno;
331 13b2bc37 2022-10-23 stsp 		file->lineno++;
332 13b2bc37 2022-10-23 stsp 		c = getc(file->stream);
333 13b2bc37 2022-10-23 stsp 	}
334 13b2bc37 2022-10-23 stsp 
335 13b2bc37 2022-10-23 stsp 	return (c);
336 13b2bc37 2022-10-23 stsp }
337 13b2bc37 2022-10-23 stsp 
338 13b2bc37 2022-10-23 stsp int
339 13b2bc37 2022-10-23 stsp lungetc(int c)
340 13b2bc37 2022-10-23 stsp {
341 13b2bc37 2022-10-23 stsp 	if (c == EOF)
342 13b2bc37 2022-10-23 stsp 		return (EOF);
343 13b2bc37 2022-10-23 stsp 	if (parsebuf) {
344 13b2bc37 2022-10-23 stsp 		parseindex--;
345 13b2bc37 2022-10-23 stsp 		if (parseindex >= 0)
346 13b2bc37 2022-10-23 stsp 			return (c);
347 13b2bc37 2022-10-23 stsp 	}
348 13b2bc37 2022-10-23 stsp 	if (pushback_index < MAXPUSHBACK-1)
349 13b2bc37 2022-10-23 stsp 		return (pushback_buffer[pushback_index++] = c);
350 13b2bc37 2022-10-23 stsp 	else
351 13b2bc37 2022-10-23 stsp 		return (EOF);
352 13b2bc37 2022-10-23 stsp }
353 13b2bc37 2022-10-23 stsp 
354 13b2bc37 2022-10-23 stsp int
355 13b2bc37 2022-10-23 stsp findeol(void)
356 13b2bc37 2022-10-23 stsp {
357 13b2bc37 2022-10-23 stsp 	int c;
358 13b2bc37 2022-10-23 stsp 
359 13b2bc37 2022-10-23 stsp 	parsebuf = NULL;
360 13b2bc37 2022-10-23 stsp 
361 13b2bc37 2022-10-23 stsp 	/* Skip to either EOF or the first real EOL. */
362 13b2bc37 2022-10-23 stsp 	while (1) {
363 13b2bc37 2022-10-23 stsp 		if (pushback_index)
364 13b2bc37 2022-10-23 stsp 			c = pushback_buffer[--pushback_index];
365 13b2bc37 2022-10-23 stsp 		else
366 13b2bc37 2022-10-23 stsp 			c = lgetc(0);
367 13b2bc37 2022-10-23 stsp 		if (c == '\n') {
368 13b2bc37 2022-10-23 stsp 			file->lineno++;
369 13b2bc37 2022-10-23 stsp 			break;
370 13b2bc37 2022-10-23 stsp 		}
371 13b2bc37 2022-10-23 stsp 		if (c == EOF)
372 13b2bc37 2022-10-23 stsp 			break;
373 13b2bc37 2022-10-23 stsp 	}
374 13b2bc37 2022-10-23 stsp 	return (ERROR);
375 13b2bc37 2022-10-23 stsp }
376 13b2bc37 2022-10-23 stsp 
377 13b2bc37 2022-10-23 stsp int
378 13b2bc37 2022-10-23 stsp yylex(void)
379 13b2bc37 2022-10-23 stsp {
380 13b2bc37 2022-10-23 stsp 	unsigned char buf[8096];
381 13b2bc37 2022-10-23 stsp 	unsigned char *p, *val;
382 13b2bc37 2022-10-23 stsp 	int quotec, next, c;
383 13b2bc37 2022-10-23 stsp 	int token;
384 13b2bc37 2022-10-23 stsp 
385 13b2bc37 2022-10-23 stsp top:
386 13b2bc37 2022-10-23 stsp 	p = buf;
387 13b2bc37 2022-10-23 stsp 	c = lgetc(0);
388 13b2bc37 2022-10-23 stsp 	while (c == ' ' || c == '\t')
389 13b2bc37 2022-10-23 stsp 		c = lgetc(0); /* nothing */
390 13b2bc37 2022-10-23 stsp 
391 13b2bc37 2022-10-23 stsp 	yylval.lineno = file->lineno;
392 13b2bc37 2022-10-23 stsp 	if (c == '#') {
393 13b2bc37 2022-10-23 stsp 		c = lgetc(0);
394 13b2bc37 2022-10-23 stsp 		while (c != '\n' && c != EOF)
395 13b2bc37 2022-10-23 stsp 			c = lgetc(0); /* nothing */
396 13b2bc37 2022-10-23 stsp 	}
397 13b2bc37 2022-10-23 stsp 	if (c == '$' && parsebuf == NULL) {
398 13b2bc37 2022-10-23 stsp 		while (1) {
399 13b2bc37 2022-10-23 stsp 			c = lgetc(0);
400 13b2bc37 2022-10-23 stsp 			if (c == EOF)
401 13b2bc37 2022-10-23 stsp 				return (0);
402 13b2bc37 2022-10-23 stsp 
403 13b2bc37 2022-10-23 stsp 			if (p + 1 >= buf + sizeof(buf) - 1) {
404 13b2bc37 2022-10-23 stsp 				yyerror("string too long");
405 13b2bc37 2022-10-23 stsp 				return (findeol());
406 13b2bc37 2022-10-23 stsp 			}
407 13b2bc37 2022-10-23 stsp 			if (isalnum(c) || c == '_') {
408 13b2bc37 2022-10-23 stsp 				*p++ = c;
409 13b2bc37 2022-10-23 stsp 				continue;
410 13b2bc37 2022-10-23 stsp 			}
411 13b2bc37 2022-10-23 stsp 			*p = '\0';
412 13b2bc37 2022-10-23 stsp 			lungetc(c);
413 13b2bc37 2022-10-23 stsp 			break;
414 13b2bc37 2022-10-23 stsp 		}
415 13b2bc37 2022-10-23 stsp 		val = symget(buf);
416 13b2bc37 2022-10-23 stsp 		if (val == NULL) {
417 13b2bc37 2022-10-23 stsp 			yyerror("macro '%s' not defined", buf);
418 13b2bc37 2022-10-23 stsp 			return (findeol());
419 13b2bc37 2022-10-23 stsp 		}
420 13b2bc37 2022-10-23 stsp 		parsebuf = val;
421 13b2bc37 2022-10-23 stsp 		parseindex = 0;
422 13b2bc37 2022-10-23 stsp 		goto top;
423 13b2bc37 2022-10-23 stsp 	}
424 13b2bc37 2022-10-23 stsp 
425 13b2bc37 2022-10-23 stsp 	switch (c) {
426 13b2bc37 2022-10-23 stsp 	case '\'':
427 13b2bc37 2022-10-23 stsp 	case '"':
428 13b2bc37 2022-10-23 stsp 		quotec = c;
429 13b2bc37 2022-10-23 stsp 		while (1) {
430 13b2bc37 2022-10-23 stsp 			c = lgetc(quotec);
431 13b2bc37 2022-10-23 stsp 			if (c == EOF)
432 13b2bc37 2022-10-23 stsp 				return (0);
433 13b2bc37 2022-10-23 stsp 			if (c == '\n') {
434 13b2bc37 2022-10-23 stsp 				file->lineno++;
435 13b2bc37 2022-10-23 stsp 				continue;
436 13b2bc37 2022-10-23 stsp 			} else if (c == '\\') {
437 13b2bc37 2022-10-23 stsp 				next = lgetc(quotec);
438 13b2bc37 2022-10-23 stsp 				if (next == EOF)
439 13b2bc37 2022-10-23 stsp 					return (0);
440 13b2bc37 2022-10-23 stsp 				if (next == quotec || c == ' ' || c == '\t')
441 13b2bc37 2022-10-23 stsp 					c = next;
442 13b2bc37 2022-10-23 stsp 				else if (next == '\n') {
443 13b2bc37 2022-10-23 stsp 					file->lineno++;
444 13b2bc37 2022-10-23 stsp 					continue;
445 13b2bc37 2022-10-23 stsp 				} else
446 13b2bc37 2022-10-23 stsp 					lungetc(next);
447 13b2bc37 2022-10-23 stsp 			} else if (c == quotec) {
448 13b2bc37 2022-10-23 stsp 				*p = '\0';
449 13b2bc37 2022-10-23 stsp 				break;
450 13b2bc37 2022-10-23 stsp 			} else if (c == '\0') {
451 13b2bc37 2022-10-23 stsp 				yyerror("syntax error");
452 13b2bc37 2022-10-23 stsp 				return (findeol());
453 13b2bc37 2022-10-23 stsp 			}
454 13b2bc37 2022-10-23 stsp 			if (p + 1 >= buf + sizeof(buf) - 1) {
455 13b2bc37 2022-10-23 stsp 				yyerror("string too long");
456 13b2bc37 2022-10-23 stsp 				return (findeol());
457 13b2bc37 2022-10-23 stsp 			}
458 13b2bc37 2022-10-23 stsp 			*p++ = c;
459 13b2bc37 2022-10-23 stsp 		}
460 13b2bc37 2022-10-23 stsp 		yylval.v.string = strdup(buf);
461 13b2bc37 2022-10-23 stsp 		if (yylval.v.string == NULL)
462 13b2bc37 2022-10-23 stsp 			err(1, "yylex: strdup");
463 13b2bc37 2022-10-23 stsp 		return (STRING);
464 13b2bc37 2022-10-23 stsp 	}
465 13b2bc37 2022-10-23 stsp 
466 13b2bc37 2022-10-23 stsp #define allowed_to_end_number(x) \
467 13b2bc37 2022-10-23 stsp 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
468 13b2bc37 2022-10-23 stsp 
469 13b2bc37 2022-10-23 stsp 	if (c == '-' || isdigit(c)) {
470 13b2bc37 2022-10-23 stsp 		do {
471 13b2bc37 2022-10-23 stsp 			*p++ = c;
472 13b2bc37 2022-10-23 stsp 			if ((unsigned)(p-buf) >= sizeof(buf)) {
473 13b2bc37 2022-10-23 stsp 				yyerror("string too long");
474 13b2bc37 2022-10-23 stsp 				return (findeol());
475 13b2bc37 2022-10-23 stsp 			}
476 13b2bc37 2022-10-23 stsp 			c = lgetc(0);
477 13b2bc37 2022-10-23 stsp 		} while (c != EOF && isdigit(c));
478 13b2bc37 2022-10-23 stsp 		lungetc(c);
479 13b2bc37 2022-10-23 stsp 		if (p == buf + 1 && buf[0] == '-')
480 13b2bc37 2022-10-23 stsp 			goto nodigits;
481 13b2bc37 2022-10-23 stsp 		if (c == EOF || allowed_to_end_number(c)) {
482 13b2bc37 2022-10-23 stsp 			const char *errstr = NULL;
483 13b2bc37 2022-10-23 stsp 
484 13b2bc37 2022-10-23 stsp 			*p = '\0';
485 13b2bc37 2022-10-23 stsp 			yylval.v.number = strtonum(buf, LLONG_MIN,
486 13b2bc37 2022-10-23 stsp 			    LLONG_MAX, &errstr);
487 13b2bc37 2022-10-23 stsp 			if (errstr) {
488 13b2bc37 2022-10-23 stsp 				yyerror("\"%s\" invalid number: %s",
489 13b2bc37 2022-10-23 stsp 				    buf, errstr);
490 13b2bc37 2022-10-23 stsp 				return (findeol());
491 13b2bc37 2022-10-23 stsp 			}
492 13b2bc37 2022-10-23 stsp 			return (NUMBER);
493 13b2bc37 2022-10-23 stsp 		} else {
494 13b2bc37 2022-10-23 stsp nodigits:
495 13b2bc37 2022-10-23 stsp 			while (p > buf + 1)
496 13b2bc37 2022-10-23 stsp 				lungetc(*--p);
497 13b2bc37 2022-10-23 stsp 			c = *--p;
498 13b2bc37 2022-10-23 stsp 			if (c == '-')
499 13b2bc37 2022-10-23 stsp 				return (c);
500 13b2bc37 2022-10-23 stsp 		}
501 13b2bc37 2022-10-23 stsp 	}
502 13b2bc37 2022-10-23 stsp 
503 13b2bc37 2022-10-23 stsp #define allowed_in_string(x) \
504 13b2bc37 2022-10-23 stsp 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
505 13b2bc37 2022-10-23 stsp 	x != '{' && x != '}' && \
506 13b2bc37 2022-10-23 stsp 	x != '!' && x != '=' && x != '#' && \
507 13b2bc37 2022-10-23 stsp 	x != ','))
508 13b2bc37 2022-10-23 stsp 
509 13b2bc37 2022-10-23 stsp 	if (isalnum(c) || c == ':' || c == '_') {
510 13b2bc37 2022-10-23 stsp 		do {
511 13b2bc37 2022-10-23 stsp 			*p++ = c;
512 13b2bc37 2022-10-23 stsp 			if ((unsigned)(p-buf) >= sizeof(buf)) {
513 13b2bc37 2022-10-23 stsp 				yyerror("string too long");
514 13b2bc37 2022-10-23 stsp 				return (findeol());
515 13b2bc37 2022-10-23 stsp 			}
516 13b2bc37 2022-10-23 stsp 			c = lgetc(0);
517 13b2bc37 2022-10-23 stsp 		} while (c != EOF && (allowed_in_string(c)));
518 13b2bc37 2022-10-23 stsp 		lungetc(c);
519 13b2bc37 2022-10-23 stsp 		*p = '\0';
520 13b2bc37 2022-10-23 stsp 		token = lookup(buf);
521 13b2bc37 2022-10-23 stsp 		if (token == STRING) {
522 13b2bc37 2022-10-23 stsp 			yylval.v.string = strdup(buf);
523 13b2bc37 2022-10-23 stsp 			if (yylval.v.string == NULL)
524 13b2bc37 2022-10-23 stsp 				err(1, "yylex: strdup");
525 13b2bc37 2022-10-23 stsp 		}
526 13b2bc37 2022-10-23 stsp 		return (token);
527 13b2bc37 2022-10-23 stsp 	}
528 13b2bc37 2022-10-23 stsp 	if (c == '\n') {
529 13b2bc37 2022-10-23 stsp 		yylval.lineno = file->lineno;
530 13b2bc37 2022-10-23 stsp 		file->lineno++;
531 13b2bc37 2022-10-23 stsp 	}
532 13b2bc37 2022-10-23 stsp 	if (c == EOF)
533 13b2bc37 2022-10-23 stsp 		return (0);
534 13b2bc37 2022-10-23 stsp 	return (c);
535 13b2bc37 2022-10-23 stsp }
536 13b2bc37 2022-10-23 stsp 
537 13b2bc37 2022-10-23 stsp int
538 13b2bc37 2022-10-23 stsp check_file_secrecy(int fd, const char *fname)
539 13b2bc37 2022-10-23 stsp {
540 13b2bc37 2022-10-23 stsp 	struct stat st;
541 13b2bc37 2022-10-23 stsp 
542 13b2bc37 2022-10-23 stsp 	if (fstat(fd, &st)) {
543 13b2bc37 2022-10-23 stsp 		log_warn("cannot stat %s", fname);
544 13b2bc37 2022-10-23 stsp 		return (-1);
545 13b2bc37 2022-10-23 stsp 	}
546 13b2bc37 2022-10-23 stsp 	if (st.st_uid != 0 && st.st_uid != getuid()) {
547 13b2bc37 2022-10-23 stsp 		log_warnx("%s: owner not root or current user", fname);
548 13b2bc37 2022-10-23 stsp 		return (-1);
549 13b2bc37 2022-10-23 stsp 	}
550 13b2bc37 2022-10-23 stsp 	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
551 13b2bc37 2022-10-23 stsp 		log_warnx("%s: group writable or world read/writable", fname);
552 13b2bc37 2022-10-23 stsp 		return (-1);
553 13b2bc37 2022-10-23 stsp 	}
554 13b2bc37 2022-10-23 stsp 	return (0);
555 13b2bc37 2022-10-23 stsp }
556 13b2bc37 2022-10-23 stsp 
557 13b2bc37 2022-10-23 stsp struct file *
558 13b2bc37 2022-10-23 stsp newfile(const char *name, int secret)
559 13b2bc37 2022-10-23 stsp {
560 13b2bc37 2022-10-23 stsp 	struct file *nfile;
561 13b2bc37 2022-10-23 stsp 
562 13b2bc37 2022-10-23 stsp 	nfile = calloc(1, sizeof(struct file));
563 13b2bc37 2022-10-23 stsp 	if (nfile == NULL) {
564 13b2bc37 2022-10-23 stsp 		log_warn("calloc");
565 13b2bc37 2022-10-23 stsp 		return (NULL);
566 13b2bc37 2022-10-23 stsp 	}
567 13b2bc37 2022-10-23 stsp 	nfile->name = strdup(name);
568 13b2bc37 2022-10-23 stsp 	if (nfile->name == NULL) {
569 13b2bc37 2022-10-23 stsp 		log_warn("strdup");
570 13b2bc37 2022-10-23 stsp 		free(nfile);
571 13b2bc37 2022-10-23 stsp 		return (NULL);
572 13b2bc37 2022-10-23 stsp 	}
573 13b2bc37 2022-10-23 stsp 	nfile->stream = fopen(nfile->name, "r");
574 13b2bc37 2022-10-23 stsp 	if (nfile->stream == NULL) {
575 13b2bc37 2022-10-23 stsp 		/* no warning, we don't require a conf file */
576 13b2bc37 2022-10-23 stsp 		free(nfile->name);
577 13b2bc37 2022-10-23 stsp 		free(nfile);
578 13b2bc37 2022-10-23 stsp 		return (NULL);
579 13b2bc37 2022-10-23 stsp 	} else if (secret &&
580 13b2bc37 2022-10-23 stsp 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
581 13b2bc37 2022-10-23 stsp 		fclose(nfile->stream);
582 13b2bc37 2022-10-23 stsp 		free(nfile->name);
583 13b2bc37 2022-10-23 stsp 		free(nfile);
584 13b2bc37 2022-10-23 stsp 		return (NULL);
585 13b2bc37 2022-10-23 stsp 	}
586 13b2bc37 2022-10-23 stsp 	nfile->lineno = 1;
587 13b2bc37 2022-10-23 stsp 	return (nfile);
588 13b2bc37 2022-10-23 stsp }
589 13b2bc37 2022-10-23 stsp 
590 13b2bc37 2022-10-23 stsp static void
591 13b2bc37 2022-10-23 stsp closefile(struct file *xfile)
592 13b2bc37 2022-10-23 stsp {
593 13b2bc37 2022-10-23 stsp 	fclose(xfile->stream);
594 13b2bc37 2022-10-23 stsp 	free(xfile->name);
595 13b2bc37 2022-10-23 stsp 	free(xfile);
596 13b2bc37 2022-10-23 stsp }
597 13b2bc37 2022-10-23 stsp 
598 13b2bc37 2022-10-23 stsp int
599 13b2bc37 2022-10-23 stsp parse_config(const char *filename, enum gotd_procid proc_id,
600 13b2bc37 2022-10-23 stsp     struct gotd *env)
601 13b2bc37 2022-10-23 stsp {
602 13b2bc37 2022-10-23 stsp 	struct sym *sym, *next;
603 13b2bc37 2022-10-23 stsp 
604 13b2bc37 2022-10-23 stsp 	memset(env, 0, sizeof(*env));
605 13b2bc37 2022-10-23 stsp 
606 13b2bc37 2022-10-23 stsp 	gotd = env;
607 13b2bc37 2022-10-23 stsp 	gotd_proc_id = proc_id;
608 13b2bc37 2022-10-23 stsp 	TAILQ_INIT(&gotd->repos);
609 13b2bc37 2022-10-23 stsp 
610 13b2bc37 2022-10-23 stsp 	/* Apply default values. */
611 13b2bc37 2022-10-23 stsp 	if (strlcpy(gotd->unix_socket_path, GOTD_UNIX_SOCKET,
612 13b2bc37 2022-10-23 stsp 	    sizeof(gotd->unix_socket_path)) >= sizeof(gotd->unix_socket_path)) {
613 13b2bc37 2022-10-23 stsp 		fprintf(stderr, "%s: unix socket path too long", __func__);
614 13b2bc37 2022-10-23 stsp 		return -1;
615 13b2bc37 2022-10-23 stsp 	}
616 13b2bc37 2022-10-23 stsp 	if (strlcpy(gotd->unix_group_name, GOTD_UNIX_GROUP,
617 13b2bc37 2022-10-23 stsp 	    sizeof(gotd->unix_group_name)) >= sizeof(gotd->unix_group_name)) {
618 13b2bc37 2022-10-23 stsp 		fprintf(stderr, "%s: unix group name too long", __func__);
619 13b2bc37 2022-10-23 stsp 		return -1;
620 13b2bc37 2022-10-23 stsp 	}
621 13b2bc37 2022-10-23 stsp 	if (strlcpy(gotd->user_name, GOTD_USER,
622 13b2bc37 2022-10-23 stsp 	    sizeof(gotd->user_name)) >= sizeof(gotd->user_name)) {
623 13b2bc37 2022-10-23 stsp 		fprintf(stderr, "%s: user name too long", __func__);
624 13b2bc37 2022-10-23 stsp 		return -1;
625 13b2bc37 2022-10-23 stsp 	}
626 13b2bc37 2022-10-23 stsp 
627 13b2bc37 2022-10-23 stsp 	file = newfile(filename, 0);
628 13b2bc37 2022-10-23 stsp 	if (file == NULL) {
629 13b2bc37 2022-10-23 stsp 		/* just return, as we don't require a conf file */
630 13b2bc37 2022-10-23 stsp 		return (0);
631 13b2bc37 2022-10-23 stsp 	}
632 13b2bc37 2022-10-23 stsp 
633 13b2bc37 2022-10-23 stsp 	yyparse();
634 13b2bc37 2022-10-23 stsp 	errors = file->errors;
635 13b2bc37 2022-10-23 stsp 	closefile(file);
636 13b2bc37 2022-10-23 stsp 
637 13b2bc37 2022-10-23 stsp 	/* Free macros and check which have not been used. */
638 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
639 13b2bc37 2022-10-23 stsp 		if ((gotd->verbosity > 1) && !sym->used)
640 13b2bc37 2022-10-23 stsp 			fprintf(stderr, "warning: macro '%s' not used\n",
641 13b2bc37 2022-10-23 stsp 			    sym->nam);
642 13b2bc37 2022-10-23 stsp 		if (!sym->persist) {
643 13b2bc37 2022-10-23 stsp 			free(sym->nam);
644 13b2bc37 2022-10-23 stsp 			free(sym->val);
645 13b2bc37 2022-10-23 stsp 			TAILQ_REMOVE(&symhead, sym, entry);
646 13b2bc37 2022-10-23 stsp 			free(sym);
647 13b2bc37 2022-10-23 stsp 		}
648 13b2bc37 2022-10-23 stsp 	}
649 13b2bc37 2022-10-23 stsp 
650 13b2bc37 2022-10-23 stsp 	if (errors)
651 13b2bc37 2022-10-23 stsp 		return (-1);
652 13b2bc37 2022-10-23 stsp 
653 13b2bc37 2022-10-23 stsp 	return (0);
654 13b2bc37 2022-10-23 stsp }
655 13b2bc37 2022-10-23 stsp 
656 13b2bc37 2022-10-23 stsp static struct gotd_repo *
657 13b2bc37 2022-10-23 stsp conf_new_repo(const char *name)
658 13b2bc37 2022-10-23 stsp {
659 13b2bc37 2022-10-23 stsp 	struct gotd_repo *repo;
660 13b2bc37 2022-10-23 stsp 
661 13b2bc37 2022-10-23 stsp 	if (strchr(name, '\n') != NULL) {
662 13b2bc37 2022-10-23 stsp 		fatalx("%s: repository names must not contain linefeeds: %s",
663 13b2bc37 2022-10-23 stsp 		    getprogname(), name);
664 13b2bc37 2022-10-23 stsp 	}
665 13b2bc37 2022-10-23 stsp 
666 13b2bc37 2022-10-23 stsp 	repo = calloc(1, sizeof(*repo));
667 13b2bc37 2022-10-23 stsp 	if (repo == NULL)
668 13b2bc37 2022-10-23 stsp 		fatalx("%s: calloc", __func__);
669 13b2bc37 2022-10-23 stsp 
670 13b2bc37 2022-10-23 stsp 	if (strlcpy(repo->name, name, sizeof(repo->name)) >=
671 13b2bc37 2022-10-23 stsp 	    sizeof(repo->name))
672 13b2bc37 2022-10-23 stsp 		fatalx("%s: strlcpy", __func__);
673 13b2bc37 2022-10-23 stsp 
674 13b2bc37 2022-10-23 stsp 	TAILQ_INSERT_TAIL(&gotd->repos, repo, entry);
675 13b2bc37 2022-10-23 stsp 	gotd->nrepos++;
676 13b2bc37 2022-10-23 stsp 
677 13b2bc37 2022-10-23 stsp 	return repo;
678 13b2bc37 2022-10-23 stsp };
679 13b2bc37 2022-10-23 stsp 
680 13b2bc37 2022-10-23 stsp int
681 13b2bc37 2022-10-23 stsp symset(const char *nam, const char *val, int persist)
682 13b2bc37 2022-10-23 stsp {
683 13b2bc37 2022-10-23 stsp 	struct sym *sym;
684 13b2bc37 2022-10-23 stsp 
685 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(sym, &symhead, entry) {
686 13b2bc37 2022-10-23 stsp 		if (strcmp(nam, sym->nam) == 0)
687 13b2bc37 2022-10-23 stsp 			break;
688 13b2bc37 2022-10-23 stsp 	}
689 13b2bc37 2022-10-23 stsp 
690 13b2bc37 2022-10-23 stsp 	if (sym != NULL) {
691 13b2bc37 2022-10-23 stsp 		if (sym->persist == 1)
692 13b2bc37 2022-10-23 stsp 			return (0);
693 13b2bc37 2022-10-23 stsp 		else {
694 13b2bc37 2022-10-23 stsp 			free(sym->nam);
695 13b2bc37 2022-10-23 stsp 			free(sym->val);
696 13b2bc37 2022-10-23 stsp 			TAILQ_REMOVE(&symhead, sym, entry);
697 13b2bc37 2022-10-23 stsp 			free(sym);
698 13b2bc37 2022-10-23 stsp 		}
699 13b2bc37 2022-10-23 stsp 	}
700 13b2bc37 2022-10-23 stsp 	sym = calloc(1, sizeof(*sym));
701 13b2bc37 2022-10-23 stsp 	if (sym == NULL)
702 13b2bc37 2022-10-23 stsp 		return (-1);
703 13b2bc37 2022-10-23 stsp 
704 13b2bc37 2022-10-23 stsp 	sym->nam = strdup(nam);
705 13b2bc37 2022-10-23 stsp 	if (sym->nam == NULL) {
706 13b2bc37 2022-10-23 stsp 		free(sym);
707 13b2bc37 2022-10-23 stsp 		return (-1);
708 13b2bc37 2022-10-23 stsp 	}
709 13b2bc37 2022-10-23 stsp 	sym->val = strdup(val);
710 13b2bc37 2022-10-23 stsp 	if (sym->val == NULL) {
711 13b2bc37 2022-10-23 stsp 		free(sym->nam);
712 13b2bc37 2022-10-23 stsp 		free(sym);
713 13b2bc37 2022-10-23 stsp 		return (-1);
714 13b2bc37 2022-10-23 stsp 	}
715 13b2bc37 2022-10-23 stsp 	sym->used = 0;
716 13b2bc37 2022-10-23 stsp 	sym->persist = persist;
717 13b2bc37 2022-10-23 stsp 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
718 13b2bc37 2022-10-23 stsp 	return (0);
719 13b2bc37 2022-10-23 stsp }
720 13b2bc37 2022-10-23 stsp 
721 13b2bc37 2022-10-23 stsp char *
722 13b2bc37 2022-10-23 stsp symget(const char *nam)
723 13b2bc37 2022-10-23 stsp {
724 13b2bc37 2022-10-23 stsp 	struct sym *sym;
725 13b2bc37 2022-10-23 stsp 
726 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(sym, &symhead, entry) {
727 13b2bc37 2022-10-23 stsp 		if (strcmp(nam, sym->nam) == 0) {
728 13b2bc37 2022-10-23 stsp 			sym->used = 1;
729 13b2bc37 2022-10-23 stsp 			return (sym->val);
730 13b2bc37 2022-10-23 stsp 		}
731 13b2bc37 2022-10-23 stsp 	}
732 13b2bc37 2022-10-23 stsp 	return (NULL);
733 13b2bc37 2022-10-23 stsp }