1 3efd8e31 2022-10-23 thomas /*
  2 3efd8e31 2022-10-23 thomas  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 3efd8e31 2022-10-23 thomas  * Copyright (c) 2016-2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
  4 3efd8e31 2022-10-23 thomas  * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
  5 3efd8e31 2022-10-23 thomas  * Copyright (c) 2004 Ryan McBride <mcbride@openbsd.org>
  6 3efd8e31 2022-10-23 thomas  * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
  7 3efd8e31 2022-10-23 thomas  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
  8 3efd8e31 2022-10-23 thomas  * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
  9 3efd8e31 2022-10-23 thomas  * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
 10 3efd8e31 2022-10-23 thomas  *
 11 3efd8e31 2022-10-23 thomas  * Permission to use, copy, modify, and distribute this software for any
 12 3efd8e31 2022-10-23 thomas  * purpose with or without fee is hereby granted, provided that the above
 13 3efd8e31 2022-10-23 thomas  * copyright notice and this permission notice appear in all copies.
 14 3efd8e31 2022-10-23 thomas  *
 15 3efd8e31 2022-10-23 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 16 3efd8e31 2022-10-23 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 17 3efd8e31 2022-10-23 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 18 3efd8e31 2022-10-23 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 19 3efd8e31 2022-10-23 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 20 3efd8e31 2022-10-23 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 21 3efd8e31 2022-10-23 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 22 3efd8e31 2022-10-23 thomas  */
 23 3efd8e31 2022-10-23 thomas 
 24 3efd8e31 2022-10-23 thomas %{
 25 3efd8e31 2022-10-23 thomas #include <sys/time.h>
 26 3efd8e31 2022-10-23 thomas #include <sys/types.h>
 27 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
 28 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
 29 3efd8e31 2022-10-23 thomas 
 30 3efd8e31 2022-10-23 thomas #include <ctype.h>
 31 3efd8e31 2022-10-23 thomas #include <err.h>
 32 3efd8e31 2022-10-23 thomas #include <errno.h>
 33 3efd8e31 2022-10-23 thomas #include <event.h>
 34 3efd8e31 2022-10-23 thomas #include <imsg.h>
 35 3efd8e31 2022-10-23 thomas #include <limits.h>
 36 3efd8e31 2022-10-23 thomas #include <sha1.h>
 37 3efd8e31 2022-10-23 thomas #include <stdarg.h>
 38 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 39 3efd8e31 2022-10-23 thomas #include <stdio.h>
 40 3efd8e31 2022-10-23 thomas #include <string.h>
 41 3efd8e31 2022-10-23 thomas #include <syslog.h>
 42 3efd8e31 2022-10-23 thomas #include <unistd.h>
 43 3efd8e31 2022-10-23 thomas 
 44 3efd8e31 2022-10-23 thomas #include "got_error.h"
 45 3efd8e31 2022-10-23 thomas #include "got_path.h"
 46 3efd8e31 2022-10-23 thomas 
 47 3efd8e31 2022-10-23 thomas #include "log.h"
 48 3efd8e31 2022-10-23 thomas #include "gotd.h"
 49 3efd8e31 2022-10-23 thomas 
 50 3efd8e31 2022-10-23 thomas TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
 51 3efd8e31 2022-10-23 thomas static struct file {
 52 3efd8e31 2022-10-23 thomas 	TAILQ_ENTRY(file)	 entry;
 53 3efd8e31 2022-10-23 thomas 	FILE			*stream;
 54 3efd8e31 2022-10-23 thomas 	char			*name;
 55 3efd8e31 2022-10-23 thomas 	int			 lineno;
 56 3efd8e31 2022-10-23 thomas 	int			 errors;
 57 3efd8e31 2022-10-23 thomas } *file;
 58 3efd8e31 2022-10-23 thomas struct file	*newfile(const char *, int);
 59 3efd8e31 2022-10-23 thomas static void	 closefile(struct file *);
 60 3efd8e31 2022-10-23 thomas int		 check_file_secrecy(int, const char *);
 61 3efd8e31 2022-10-23 thomas int		 yyparse(void);
 62 3efd8e31 2022-10-23 thomas int		 yylex(void);
 63 3efd8e31 2022-10-23 thomas int		 yyerror(const char *, ...)
 64 3efd8e31 2022-10-23 thomas     __attribute__((__format__ (printf, 1, 2)))
 65 3efd8e31 2022-10-23 thomas     __attribute__((__nonnull__ (1)));
 66 3efd8e31 2022-10-23 thomas int		 kw_cmp(const void *, const void *);
 67 3efd8e31 2022-10-23 thomas int		 lookup(char *);
 68 3efd8e31 2022-10-23 thomas int		 lgetc(int);
 69 3efd8e31 2022-10-23 thomas int		 lungetc(int);
 70 3efd8e31 2022-10-23 thomas int		 findeol(void);
 71 3efd8e31 2022-10-23 thomas 
 72 3efd8e31 2022-10-23 thomas TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
 73 3efd8e31 2022-10-23 thomas struct sym {
 74 3efd8e31 2022-10-23 thomas 	TAILQ_ENTRY(sym)	 entry;
 75 3efd8e31 2022-10-23 thomas 	int			 used;
 76 3efd8e31 2022-10-23 thomas 	int			 persist;
 77 3efd8e31 2022-10-23 thomas 	char			*nam;
 78 3efd8e31 2022-10-23 thomas 	char			*val;
 79 3efd8e31 2022-10-23 thomas };
 80 3efd8e31 2022-10-23 thomas 
 81 3efd8e31 2022-10-23 thomas int	 symset(const char *, const char *, int);
 82 3efd8e31 2022-10-23 thomas char	*symget(const char *);
 83 3efd8e31 2022-10-23 thomas 
 84 3efd8e31 2022-10-23 thomas static int		 errors;
 85 3efd8e31 2022-10-23 thomas 
 86 3efd8e31 2022-10-23 thomas static struct gotd		*gotd;
 87 3efd8e31 2022-10-23 thomas static struct gotd_repo		*new_repo;
 88 3efd8e31 2022-10-23 thomas static struct gotd_repo		*conf_new_repo(const char *);
 89 3efd8e31 2022-10-23 thomas static enum gotd_procid		 gotd_proc_id;
 90 3efd8e31 2022-10-23 thomas 
 91 3efd8e31 2022-10-23 thomas typedef struct {
 92 3efd8e31 2022-10-23 thomas 	union {
 93 3efd8e31 2022-10-23 thomas 		long long	 number;
 94 3efd8e31 2022-10-23 thomas 		char		*string;
 95 3efd8e31 2022-10-23 thomas 	} v;
 96 3efd8e31 2022-10-23 thomas 	int lineno;
 97 3efd8e31 2022-10-23 thomas } YYSTYPE;
 98 3efd8e31 2022-10-23 thomas 
 99 3efd8e31 2022-10-23 thomas %}
100 3efd8e31 2022-10-23 thomas 
101 729a7e24 2022-11-17 thomas %token	PATH ERROR ON UNIX_SOCKET UNIX_GROUP USER REPOSITORY PERMIT DENY
102 3efd8e31 2022-10-23 thomas 
103 3efd8e31 2022-10-23 thomas %token	<v.string>	STRING
104 3efd8e31 2022-10-23 thomas %token	<v.number>	NUMBER
105 3efd8e31 2022-10-23 thomas %type	<v.number>	boolean
106 3efd8e31 2022-10-23 thomas 
107 3efd8e31 2022-10-23 thomas %%
108 3efd8e31 2022-10-23 thomas 
109 3efd8e31 2022-10-23 thomas grammar		:
110 3efd8e31 2022-10-23 thomas 		| grammar '\n'
111 3efd8e31 2022-10-23 thomas 		| grammar main '\n'
112 3efd8e31 2022-10-23 thomas 		| grammar repository '\n'
113 3efd8e31 2022-10-23 thomas 		;
114 3efd8e31 2022-10-23 thomas 
115 3efd8e31 2022-10-23 thomas boolean		: STRING {
116 3efd8e31 2022-10-23 thomas 			if (strcasecmp($1, "1") == 0 ||
117 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "yes") == 0 ||
118 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "on") == 0)
119 3efd8e31 2022-10-23 thomas 				$$ = 1;
120 3efd8e31 2022-10-23 thomas 			else if (strcasecmp($1, "0") == 0 ||
121 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "off") == 0 ||
122 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "no") == 0)
123 3efd8e31 2022-10-23 thomas 				$$ = 0;
124 3efd8e31 2022-10-23 thomas 			else {
125 3efd8e31 2022-10-23 thomas 				yyerror("invalid boolean value '%s'", $1);
126 3efd8e31 2022-10-23 thomas 				free($1);
127 3efd8e31 2022-10-23 thomas 				YYERROR;
128 3efd8e31 2022-10-23 thomas 			}
129 3efd8e31 2022-10-23 thomas 			free($1);
130 3efd8e31 2022-10-23 thomas 		}
131 3efd8e31 2022-10-23 thomas 		| ON { $$ = 1; }
132 3efd8e31 2022-10-23 thomas 		| NUMBER { $$ = $1; }
133 3efd8e31 2022-10-23 thomas 		;
134 3efd8e31 2022-10-23 thomas 
135 3efd8e31 2022-10-23 thomas main		: UNIX_SOCKET STRING {
136 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
137 3efd8e31 2022-10-23 thomas 				if (strlcpy(gotd->unix_socket_path, $2,
138 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) >=
139 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) {
140 3efd8e31 2022-10-23 thomas 					yyerror("%s: unix socket path too long",
141 3efd8e31 2022-10-23 thomas 					    __func__);
142 3efd8e31 2022-10-23 thomas 					free($2);
143 3efd8e31 2022-10-23 thomas 					YYERROR;
144 3efd8e31 2022-10-23 thomas 				}
145 3efd8e31 2022-10-23 thomas 			}
146 3efd8e31 2022-10-23 thomas 			free($2);
147 3efd8e31 2022-10-23 thomas 		}
148 3efd8e31 2022-10-23 thomas 		| UNIX_GROUP STRING {
149 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->unix_group_name, $2,
150 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) >=
151 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) {
152 3efd8e31 2022-10-23 thomas 				yyerror("%s: unix group name too long",
153 3efd8e31 2022-10-23 thomas 				    __func__);
154 3efd8e31 2022-10-23 thomas 				free($2);
155 3efd8e31 2022-10-23 thomas 				YYERROR;
156 3efd8e31 2022-10-23 thomas 			}
157 3efd8e31 2022-10-23 thomas 			free($2);
158 3efd8e31 2022-10-23 thomas 		}
159 3efd8e31 2022-10-23 thomas 		| USER STRING {
160 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->user_name, $2,
161 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) >=
162 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) {
163 3efd8e31 2022-10-23 thomas 				yyerror("%s: user name too long", __func__);
164 3efd8e31 2022-10-23 thomas 				free($2);
165 3efd8e31 2022-10-23 thomas 				YYERROR;
166 3efd8e31 2022-10-23 thomas 			}
167 3efd8e31 2022-10-23 thomas 			free($2);
168 3efd8e31 2022-10-23 thomas 		}
169 3efd8e31 2022-10-23 thomas 		;
170 3efd8e31 2022-10-23 thomas 
171 3efd8e31 2022-10-23 thomas repository	: REPOSITORY STRING {
172 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
173 3efd8e31 2022-10-23 thomas 
174 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
175 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
176 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
177 3efd8e31 2022-10-23 thomas 					free($2);
178 3efd8e31 2022-10-23 thomas 					YYERROR;
179 3efd8e31 2022-10-23 thomas 				}
180 3efd8e31 2022-10-23 thomas 			}
181 3efd8e31 2022-10-23 thomas 
182 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
183 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
184 3efd8e31 2022-10-23 thomas 			}
185 3efd8e31 2022-10-23 thomas 			free($2);
186 3efd8e31 2022-10-23 thomas 		}
187 3efd8e31 2022-10-23 thomas 		| REPOSITORY STRING {
188 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
189 3efd8e31 2022-10-23 thomas 
190 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
191 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
192 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
193 3efd8e31 2022-10-23 thomas 					free($2);
194 3efd8e31 2022-10-23 thomas 					YYERROR;
195 3efd8e31 2022-10-23 thomas 				}
196 3efd8e31 2022-10-23 thomas 			}
197 3efd8e31 2022-10-23 thomas 
198 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
199 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
200 3efd8e31 2022-10-23 thomas 			}
201 3efd8e31 2022-10-23 thomas 			free($2);
202 3efd8e31 2022-10-23 thomas 		} '{' optnl repoopts2 '}' {
203 3efd8e31 2022-10-23 thomas 		}
204 3efd8e31 2022-10-23 thomas 		;
205 3efd8e31 2022-10-23 thomas 
206 3efd8e31 2022-10-23 thomas repoopts1	: PATH STRING {
207 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
208 3efd8e31 2022-10-23 thomas 				if (!got_path_is_absolute($2)) {
209 3efd8e31 2022-10-23 thomas 					yyerror("%s: path %s is not absolute",
210 3efd8e31 2022-10-23 thomas 					    __func__, $2);
211 3efd8e31 2022-10-23 thomas 					free($2);
212 3efd8e31 2022-10-23 thomas 					YYERROR;
213 3efd8e31 2022-10-23 thomas 				}
214 3efd8e31 2022-10-23 thomas 				if (strlcpy(new_repo->path, $2,
215 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) >=
216 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) {
217 3efd8e31 2022-10-23 thomas 					yyerror("%s: path truncated", __func__);
218 3efd8e31 2022-10-23 thomas 					free($2);
219 3efd8e31 2022-10-23 thomas 					YYERROR;
220 3efd8e31 2022-10-23 thomas 				}
221 3efd8e31 2022-10-23 thomas 			}
222 3efd8e31 2022-10-23 thomas 			free($2);
223 729a7e24 2022-11-17 thomas 		}
224 729a7e24 2022-11-17 thomas 		| PERMIT RO STRING {
225 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
226 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
227 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED, GOTD_AUTH_READ, $3);
228 729a7e24 2022-11-17 thomas 			}
229 729a7e24 2022-11-17 thomas 		}
230 729a7e24 2022-11-17 thomas 		| PERMIT RW STRING {
231 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
232 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
233 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED,
234 729a7e24 2022-11-17 thomas 				    GOTD_AUTH_READ | GOTD_AUTH_WRITE, $3);
235 729a7e24 2022-11-17 thomas 			}
236 3efd8e31 2022-10-23 thomas 		}
237 729a7e24 2022-11-17 thomas 		| DENY STRING {
238 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
239 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
240 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_DENIED, 0, $2);
241 729a7e24 2022-11-17 thomas 			}
242 729a7e24 2022-11-17 thomas 		}
243 3efd8e31 2022-10-23 thomas 		;
244 3efd8e31 2022-10-23 thomas 
245 3efd8e31 2022-10-23 thomas repoopts2	: repoopts2 repoopts1 nl
246 3efd8e31 2022-10-23 thomas 		| repoopts1 optnl
247 3efd8e31 2022-10-23 thomas 		;
248 3efd8e31 2022-10-23 thomas 
249 3efd8e31 2022-10-23 thomas nl		: '\n' optnl
250 3efd8e31 2022-10-23 thomas 		;
251 3efd8e31 2022-10-23 thomas 
252 3efd8e31 2022-10-23 thomas optnl		: '\n' optnl		/* zero or more newlines */
253 3efd8e31 2022-10-23 thomas 		| /* empty */
254 3efd8e31 2022-10-23 thomas 		;
255 3efd8e31 2022-10-23 thomas 
256 3efd8e31 2022-10-23 thomas %%
257 3efd8e31 2022-10-23 thomas 
258 3efd8e31 2022-10-23 thomas struct keywords {
259 3efd8e31 2022-10-23 thomas 	const char	*k_name;
260 3efd8e31 2022-10-23 thomas 	int		 k_val;
261 3efd8e31 2022-10-23 thomas };
262 3efd8e31 2022-10-23 thomas 
263 3efd8e31 2022-10-23 thomas int
264 3efd8e31 2022-10-23 thomas yyerror(const char *fmt, ...)
265 3efd8e31 2022-10-23 thomas {
266 3efd8e31 2022-10-23 thomas 	va_list ap;
267 3efd8e31 2022-10-23 thomas 	char *msg;
268 3efd8e31 2022-10-23 thomas 
269 3efd8e31 2022-10-23 thomas 	file->errors++;
270 3efd8e31 2022-10-23 thomas 	va_start(ap, fmt);
271 3efd8e31 2022-10-23 thomas 	if (vasprintf(&msg, fmt, ap) == -1)
272 3efd8e31 2022-10-23 thomas 		fatalx("yyerror vasprintf");
273 3efd8e31 2022-10-23 thomas 	va_end(ap);
274 3efd8e31 2022-10-23 thomas 	logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
275 3efd8e31 2022-10-23 thomas 	free(msg);
276 3efd8e31 2022-10-23 thomas 	return (0);
277 3efd8e31 2022-10-23 thomas }
278 3efd8e31 2022-10-23 thomas 
279 3efd8e31 2022-10-23 thomas int
280 3efd8e31 2022-10-23 thomas kw_cmp(const void *k, const void *e)
281 3efd8e31 2022-10-23 thomas {
282 3efd8e31 2022-10-23 thomas 	return (strcmp(k, ((const struct keywords *)e)->k_name));
283 3efd8e31 2022-10-23 thomas }
284 3efd8e31 2022-10-23 thomas 
285 3efd8e31 2022-10-23 thomas int
286 3efd8e31 2022-10-23 thomas lookup(char *s)
287 3efd8e31 2022-10-23 thomas {
288 3efd8e31 2022-10-23 thomas 	/* This has to be sorted always. */
289 3efd8e31 2022-10-23 thomas 	static const struct keywords keywords[] = {
290 729a7e24 2022-11-17 thomas 		{ "deny",			DENY },
291 3efd8e31 2022-10-23 thomas 		{ "on",				ON },
292 3efd8e31 2022-10-23 thomas 		{ "path",			PATH },
293 729a7e24 2022-11-17 thomas 		{ "permit",			PERMIT },
294 3efd8e31 2022-10-23 thomas 		{ "repository",			REPOSITORY },
295 729a7e24 2022-11-17 thomas 		{ "ro",				RO },
296 729a7e24 2022-11-17 thomas 		{ "rw",				RW },
297 3efd8e31 2022-10-23 thomas 		{ "unix_group",			UNIX_GROUP },
298 3efd8e31 2022-10-23 thomas 		{ "unix_socket",		UNIX_SOCKET },
299 3efd8e31 2022-10-23 thomas 		{ "user",			USER },
300 3efd8e31 2022-10-23 thomas 	};
301 3efd8e31 2022-10-23 thomas 	const struct keywords *p;
302 3efd8e31 2022-10-23 thomas 
303 3efd8e31 2022-10-23 thomas 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
304 3efd8e31 2022-10-23 thomas 	    sizeof(keywords[0]), kw_cmp);
305 3efd8e31 2022-10-23 thomas 
306 3efd8e31 2022-10-23 thomas 	if (p)
307 3efd8e31 2022-10-23 thomas 		return (p->k_val);
308 3efd8e31 2022-10-23 thomas 	else
309 3efd8e31 2022-10-23 thomas 		return (STRING);
310 3efd8e31 2022-10-23 thomas }
311 3efd8e31 2022-10-23 thomas 
312 3efd8e31 2022-10-23 thomas #define MAXPUSHBACK	128
313 3efd8e31 2022-10-23 thomas 
314 3efd8e31 2022-10-23 thomas unsigned char *parsebuf;
315 3efd8e31 2022-10-23 thomas int parseindex;
316 3efd8e31 2022-10-23 thomas unsigned char pushback_buffer[MAXPUSHBACK];
317 3efd8e31 2022-10-23 thomas int pushback_index = 0;
318 3efd8e31 2022-10-23 thomas 
319 3efd8e31 2022-10-23 thomas int
320 3efd8e31 2022-10-23 thomas lgetc(int quotec)
321 3efd8e31 2022-10-23 thomas {
322 3efd8e31 2022-10-23 thomas 	int c, next;
323 3efd8e31 2022-10-23 thomas 
324 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
325 3efd8e31 2022-10-23 thomas 		/* Read character from the parsebuffer instead of input. */
326 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0) {
327 3efd8e31 2022-10-23 thomas 			c = parsebuf[parseindex++];
328 3efd8e31 2022-10-23 thomas 			if (c != '\0')
329 3efd8e31 2022-10-23 thomas 				return (c);
330 3efd8e31 2022-10-23 thomas 			parsebuf = NULL;
331 3efd8e31 2022-10-23 thomas 		} else
332 3efd8e31 2022-10-23 thomas 			parseindex++;
333 3efd8e31 2022-10-23 thomas 	}
334 3efd8e31 2022-10-23 thomas 
335 3efd8e31 2022-10-23 thomas 	if (pushback_index)
336 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[--pushback_index]);
337 3efd8e31 2022-10-23 thomas 
338 3efd8e31 2022-10-23 thomas 	if (quotec) {
339 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
340 3efd8e31 2022-10-23 thomas 		if (c == EOF)
341 3efd8e31 2022-10-23 thomas 			yyerror("reached end of file while parsing "
342 3efd8e31 2022-10-23 thomas 			    "quoted string");
343 3efd8e31 2022-10-23 thomas 		return (c);
344 3efd8e31 2022-10-23 thomas 	}
345 3efd8e31 2022-10-23 thomas 
346 3efd8e31 2022-10-23 thomas 	c = getc(file->stream);
347 3efd8e31 2022-10-23 thomas 	while (c == '\\') {
348 3efd8e31 2022-10-23 thomas 		next = getc(file->stream);
349 3efd8e31 2022-10-23 thomas 		if (next != '\n') {
350 3efd8e31 2022-10-23 thomas 			c = next;
351 3efd8e31 2022-10-23 thomas 			break;
352 3efd8e31 2022-10-23 thomas 		}
353 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
354 3efd8e31 2022-10-23 thomas 		file->lineno++;
355 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
356 3efd8e31 2022-10-23 thomas 	}
357 3efd8e31 2022-10-23 thomas 
358 3efd8e31 2022-10-23 thomas 	return (c);
359 3efd8e31 2022-10-23 thomas }
360 3efd8e31 2022-10-23 thomas 
361 3efd8e31 2022-10-23 thomas int
362 3efd8e31 2022-10-23 thomas lungetc(int c)
363 3efd8e31 2022-10-23 thomas {
364 3efd8e31 2022-10-23 thomas 	if (c == EOF)
365 3efd8e31 2022-10-23 thomas 		return (EOF);
366 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
367 3efd8e31 2022-10-23 thomas 		parseindex--;
368 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0)
369 3efd8e31 2022-10-23 thomas 			return (c);
370 3efd8e31 2022-10-23 thomas 	}
371 3efd8e31 2022-10-23 thomas 	if (pushback_index < MAXPUSHBACK-1)
372 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[pushback_index++] = c);
373 3efd8e31 2022-10-23 thomas 	else
374 3efd8e31 2022-10-23 thomas 		return (EOF);
375 3efd8e31 2022-10-23 thomas }
376 3efd8e31 2022-10-23 thomas 
377 3efd8e31 2022-10-23 thomas int
378 3efd8e31 2022-10-23 thomas findeol(void)
379 3efd8e31 2022-10-23 thomas {
380 3efd8e31 2022-10-23 thomas 	int c;
381 3efd8e31 2022-10-23 thomas 
382 3efd8e31 2022-10-23 thomas 	parsebuf = NULL;
383 3efd8e31 2022-10-23 thomas 
384 3efd8e31 2022-10-23 thomas 	/* Skip to either EOF or the first real EOL. */
385 3efd8e31 2022-10-23 thomas 	while (1) {
386 3efd8e31 2022-10-23 thomas 		if (pushback_index)
387 3efd8e31 2022-10-23 thomas 			c = pushback_buffer[--pushback_index];
388 3efd8e31 2022-10-23 thomas 		else
389 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
390 3efd8e31 2022-10-23 thomas 		if (c == '\n') {
391 3efd8e31 2022-10-23 thomas 			file->lineno++;
392 3efd8e31 2022-10-23 thomas 			break;
393 3efd8e31 2022-10-23 thomas 		}
394 3efd8e31 2022-10-23 thomas 		if (c == EOF)
395 3efd8e31 2022-10-23 thomas 			break;
396 3efd8e31 2022-10-23 thomas 	}
397 3efd8e31 2022-10-23 thomas 	return (ERROR);
398 3efd8e31 2022-10-23 thomas }
399 3efd8e31 2022-10-23 thomas 
400 3efd8e31 2022-10-23 thomas int
401 3efd8e31 2022-10-23 thomas yylex(void)
402 3efd8e31 2022-10-23 thomas {
403 3efd8e31 2022-10-23 thomas 	unsigned char buf[8096];
404 3efd8e31 2022-10-23 thomas 	unsigned char *p, *val;
405 3efd8e31 2022-10-23 thomas 	int quotec, next, c;
406 3efd8e31 2022-10-23 thomas 	int token;
407 3efd8e31 2022-10-23 thomas 
408 3efd8e31 2022-10-23 thomas top:
409 3efd8e31 2022-10-23 thomas 	p = buf;
410 3efd8e31 2022-10-23 thomas 	c = lgetc(0);
411 3efd8e31 2022-10-23 thomas 	while (c == ' ' || c == '\t')
412 3efd8e31 2022-10-23 thomas 		c = lgetc(0); /* nothing */
413 3efd8e31 2022-10-23 thomas 
414 3efd8e31 2022-10-23 thomas 	yylval.lineno = file->lineno;
415 3efd8e31 2022-10-23 thomas 	if (c == '#') {
416 3efd8e31 2022-10-23 thomas 		c = lgetc(0);
417 3efd8e31 2022-10-23 thomas 		while (c != '\n' && c != EOF)
418 3efd8e31 2022-10-23 thomas 			c = lgetc(0); /* nothing */
419 3efd8e31 2022-10-23 thomas 	}
420 3efd8e31 2022-10-23 thomas 	if (c == '$' && parsebuf == NULL) {
421 3efd8e31 2022-10-23 thomas 		while (1) {
422 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
423 3efd8e31 2022-10-23 thomas 			if (c == EOF)
424 3efd8e31 2022-10-23 thomas 				return (0);
425 3efd8e31 2022-10-23 thomas 
426 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
427 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
428 3efd8e31 2022-10-23 thomas 				return (findeol());
429 3efd8e31 2022-10-23 thomas 			}
430 3efd8e31 2022-10-23 thomas 			if (isalnum(c) || c == '_') {
431 3efd8e31 2022-10-23 thomas 				*p++ = c;
432 3efd8e31 2022-10-23 thomas 				continue;
433 3efd8e31 2022-10-23 thomas 			}
434 3efd8e31 2022-10-23 thomas 			*p = '\0';
435 3efd8e31 2022-10-23 thomas 			lungetc(c);
436 3efd8e31 2022-10-23 thomas 			break;
437 3efd8e31 2022-10-23 thomas 		}
438 3efd8e31 2022-10-23 thomas 		val = symget(buf);
439 3efd8e31 2022-10-23 thomas 		if (val == NULL) {
440 3efd8e31 2022-10-23 thomas 			yyerror("macro '%s' not defined", buf);
441 3efd8e31 2022-10-23 thomas 			return (findeol());
442 3efd8e31 2022-10-23 thomas 		}
443 3efd8e31 2022-10-23 thomas 		parsebuf = val;
444 3efd8e31 2022-10-23 thomas 		parseindex = 0;
445 3efd8e31 2022-10-23 thomas 		goto top;
446 3efd8e31 2022-10-23 thomas 	}
447 3efd8e31 2022-10-23 thomas 
448 3efd8e31 2022-10-23 thomas 	switch (c) {
449 3efd8e31 2022-10-23 thomas 	case '\'':
450 3efd8e31 2022-10-23 thomas 	case '"':
451 3efd8e31 2022-10-23 thomas 		quotec = c;
452 3efd8e31 2022-10-23 thomas 		while (1) {
453 3efd8e31 2022-10-23 thomas 			c = lgetc(quotec);
454 3efd8e31 2022-10-23 thomas 			if (c == EOF)
455 3efd8e31 2022-10-23 thomas 				return (0);
456 3efd8e31 2022-10-23 thomas 			if (c == '\n') {
457 3efd8e31 2022-10-23 thomas 				file->lineno++;
458 3efd8e31 2022-10-23 thomas 				continue;
459 3efd8e31 2022-10-23 thomas 			} else if (c == '\\') {
460 3efd8e31 2022-10-23 thomas 				next = lgetc(quotec);
461 3efd8e31 2022-10-23 thomas 				if (next == EOF)
462 3efd8e31 2022-10-23 thomas 					return (0);
463 3efd8e31 2022-10-23 thomas 				if (next == quotec || c == ' ' || c == '\t')
464 3efd8e31 2022-10-23 thomas 					c = next;
465 3efd8e31 2022-10-23 thomas 				else if (next == '\n') {
466 3efd8e31 2022-10-23 thomas 					file->lineno++;
467 3efd8e31 2022-10-23 thomas 					continue;
468 3efd8e31 2022-10-23 thomas 				} else
469 3efd8e31 2022-10-23 thomas 					lungetc(next);
470 3efd8e31 2022-10-23 thomas 			} else if (c == quotec) {
471 3efd8e31 2022-10-23 thomas 				*p = '\0';
472 3efd8e31 2022-10-23 thomas 				break;
473 3efd8e31 2022-10-23 thomas 			} else if (c == '\0') {
474 3efd8e31 2022-10-23 thomas 				yyerror("syntax error");
475 3efd8e31 2022-10-23 thomas 				return (findeol());
476 3efd8e31 2022-10-23 thomas 			}
477 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
478 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
479 3efd8e31 2022-10-23 thomas 				return (findeol());
480 3efd8e31 2022-10-23 thomas 			}
481 3efd8e31 2022-10-23 thomas 			*p++ = c;
482 3efd8e31 2022-10-23 thomas 		}
483 3efd8e31 2022-10-23 thomas 		yylval.v.string = strdup(buf);
484 3efd8e31 2022-10-23 thomas 		if (yylval.v.string == NULL)
485 3efd8e31 2022-10-23 thomas 			err(1, "yylex: strdup");
486 3efd8e31 2022-10-23 thomas 		return (STRING);
487 3efd8e31 2022-10-23 thomas 	}
488 3efd8e31 2022-10-23 thomas 
489 3efd8e31 2022-10-23 thomas #define allowed_to_end_number(x) \
490 3efd8e31 2022-10-23 thomas 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
491 3efd8e31 2022-10-23 thomas 
492 3efd8e31 2022-10-23 thomas 	if (c == '-' || isdigit(c)) {
493 3efd8e31 2022-10-23 thomas 		do {
494 3efd8e31 2022-10-23 thomas 			*p++ = c;
495 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
496 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
497 3efd8e31 2022-10-23 thomas 				return (findeol());
498 3efd8e31 2022-10-23 thomas 			}
499 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
500 3efd8e31 2022-10-23 thomas 		} while (c != EOF && isdigit(c));
501 3efd8e31 2022-10-23 thomas 		lungetc(c);
502 3efd8e31 2022-10-23 thomas 		if (p == buf + 1 && buf[0] == '-')
503 3efd8e31 2022-10-23 thomas 			goto nodigits;
504 3efd8e31 2022-10-23 thomas 		if (c == EOF || allowed_to_end_number(c)) {
505 3efd8e31 2022-10-23 thomas 			const char *errstr = NULL;
506 3efd8e31 2022-10-23 thomas 
507 3efd8e31 2022-10-23 thomas 			*p = '\0';
508 3efd8e31 2022-10-23 thomas 			yylval.v.number = strtonum(buf, LLONG_MIN,
509 3efd8e31 2022-10-23 thomas 			    LLONG_MAX, &errstr);
510 3efd8e31 2022-10-23 thomas 			if (errstr) {
511 3efd8e31 2022-10-23 thomas 				yyerror("\"%s\" invalid number: %s",
512 3efd8e31 2022-10-23 thomas 				    buf, errstr);
513 3efd8e31 2022-10-23 thomas 				return (findeol());
514 3efd8e31 2022-10-23 thomas 			}
515 3efd8e31 2022-10-23 thomas 			return (NUMBER);
516 3efd8e31 2022-10-23 thomas 		} else {
517 3efd8e31 2022-10-23 thomas nodigits:
518 3efd8e31 2022-10-23 thomas 			while (p > buf + 1)
519 3efd8e31 2022-10-23 thomas 				lungetc(*--p);
520 3efd8e31 2022-10-23 thomas 			c = *--p;
521 3efd8e31 2022-10-23 thomas 			if (c == '-')
522 3efd8e31 2022-10-23 thomas 				return (c);
523 3efd8e31 2022-10-23 thomas 		}
524 3efd8e31 2022-10-23 thomas 	}
525 3efd8e31 2022-10-23 thomas 
526 3efd8e31 2022-10-23 thomas #define allowed_in_string(x) \
527 3efd8e31 2022-10-23 thomas 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
528 3efd8e31 2022-10-23 thomas 	x != '{' && x != '}' && \
529 3efd8e31 2022-10-23 thomas 	x != '!' && x != '=' && x != '#' && \
530 3efd8e31 2022-10-23 thomas 	x != ','))
531 3efd8e31 2022-10-23 thomas 
532 3efd8e31 2022-10-23 thomas 	if (isalnum(c) || c == ':' || c == '_') {
533 3efd8e31 2022-10-23 thomas 		do {
534 3efd8e31 2022-10-23 thomas 			*p++ = c;
535 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
536 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
537 3efd8e31 2022-10-23 thomas 				return (findeol());
538 3efd8e31 2022-10-23 thomas 			}
539 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
540 3efd8e31 2022-10-23 thomas 		} while (c != EOF && (allowed_in_string(c)));
541 3efd8e31 2022-10-23 thomas 		lungetc(c);
542 3efd8e31 2022-10-23 thomas 		*p = '\0';
543 3efd8e31 2022-10-23 thomas 		token = lookup(buf);
544 3efd8e31 2022-10-23 thomas 		if (token == STRING) {
545 3efd8e31 2022-10-23 thomas 			yylval.v.string = strdup(buf);
546 3efd8e31 2022-10-23 thomas 			if (yylval.v.string == NULL)
547 3efd8e31 2022-10-23 thomas 				err(1, "yylex: strdup");
548 3efd8e31 2022-10-23 thomas 		}
549 3efd8e31 2022-10-23 thomas 		return (token);
550 3efd8e31 2022-10-23 thomas 	}
551 3efd8e31 2022-10-23 thomas 	if (c == '\n') {
552 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
553 3efd8e31 2022-10-23 thomas 		file->lineno++;
554 3efd8e31 2022-10-23 thomas 	}
555 3efd8e31 2022-10-23 thomas 	if (c == EOF)
556 3efd8e31 2022-10-23 thomas 		return (0);
557 3efd8e31 2022-10-23 thomas 	return (c);
558 3efd8e31 2022-10-23 thomas }
559 3efd8e31 2022-10-23 thomas 
560 3efd8e31 2022-10-23 thomas int
561 3efd8e31 2022-10-23 thomas check_file_secrecy(int fd, const char *fname)
562 3efd8e31 2022-10-23 thomas {
563 3efd8e31 2022-10-23 thomas 	struct stat st;
564 3efd8e31 2022-10-23 thomas 
565 3efd8e31 2022-10-23 thomas 	if (fstat(fd, &st)) {
566 3efd8e31 2022-10-23 thomas 		log_warn("cannot stat %s", fname);
567 3efd8e31 2022-10-23 thomas 		return (-1);
568 3efd8e31 2022-10-23 thomas 	}
569 3efd8e31 2022-10-23 thomas 	if (st.st_uid != 0 && st.st_uid != getuid()) {
570 3efd8e31 2022-10-23 thomas 		log_warnx("%s: owner not root or current user", fname);
571 3efd8e31 2022-10-23 thomas 		return (-1);
572 3efd8e31 2022-10-23 thomas 	}
573 3efd8e31 2022-10-23 thomas 	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
574 3efd8e31 2022-10-23 thomas 		log_warnx("%s: group writable or world read/writable", fname);
575 3efd8e31 2022-10-23 thomas 		return (-1);
576 3efd8e31 2022-10-23 thomas 	}
577 3efd8e31 2022-10-23 thomas 	return (0);
578 3efd8e31 2022-10-23 thomas }
579 3efd8e31 2022-10-23 thomas 
580 3efd8e31 2022-10-23 thomas struct file *
581 3efd8e31 2022-10-23 thomas newfile(const char *name, int secret)
582 3efd8e31 2022-10-23 thomas {
583 3efd8e31 2022-10-23 thomas 	struct file *nfile;
584 3efd8e31 2022-10-23 thomas 
585 3efd8e31 2022-10-23 thomas 	nfile = calloc(1, sizeof(struct file));
586 3efd8e31 2022-10-23 thomas 	if (nfile == NULL) {
587 3efd8e31 2022-10-23 thomas 		log_warn("calloc");
588 3efd8e31 2022-10-23 thomas 		return (NULL);
589 3efd8e31 2022-10-23 thomas 	}
590 3efd8e31 2022-10-23 thomas 	nfile->name = strdup(name);
591 3efd8e31 2022-10-23 thomas 	if (nfile->name == NULL) {
592 3efd8e31 2022-10-23 thomas 		log_warn("strdup");
593 3efd8e31 2022-10-23 thomas 		free(nfile);
594 3efd8e31 2022-10-23 thomas 		return (NULL);
595 3efd8e31 2022-10-23 thomas 	}
596 3efd8e31 2022-10-23 thomas 	nfile->stream = fopen(nfile->name, "r");
597 3efd8e31 2022-10-23 thomas 	if (nfile->stream == NULL) {
598 3efd8e31 2022-10-23 thomas 		/* no warning, we don't require a conf file */
599 3efd8e31 2022-10-23 thomas 		free(nfile->name);
600 3efd8e31 2022-10-23 thomas 		free(nfile);
601 3efd8e31 2022-10-23 thomas 		return (NULL);
602 3efd8e31 2022-10-23 thomas 	} else if (secret &&
603 3efd8e31 2022-10-23 thomas 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
604 3efd8e31 2022-10-23 thomas 		fclose(nfile->stream);
605 3efd8e31 2022-10-23 thomas 		free(nfile->name);
606 3efd8e31 2022-10-23 thomas 		free(nfile);
607 3efd8e31 2022-10-23 thomas 		return (NULL);
608 3efd8e31 2022-10-23 thomas 	}
609 3efd8e31 2022-10-23 thomas 	nfile->lineno = 1;
610 3efd8e31 2022-10-23 thomas 	return (nfile);
611 3efd8e31 2022-10-23 thomas }
612 3efd8e31 2022-10-23 thomas 
613 3efd8e31 2022-10-23 thomas static void
614 3efd8e31 2022-10-23 thomas closefile(struct file *xfile)
615 3efd8e31 2022-10-23 thomas {
616 3efd8e31 2022-10-23 thomas 	fclose(xfile->stream);
617 3efd8e31 2022-10-23 thomas 	free(xfile->name);
618 3efd8e31 2022-10-23 thomas 	free(xfile);
619 3efd8e31 2022-10-23 thomas }
620 3efd8e31 2022-10-23 thomas 
621 3efd8e31 2022-10-23 thomas int
622 3efd8e31 2022-10-23 thomas parse_config(const char *filename, enum gotd_procid proc_id,
623 3efd8e31 2022-10-23 thomas     struct gotd *env)
624 3efd8e31 2022-10-23 thomas {
625 3efd8e31 2022-10-23 thomas 	struct sym *sym, *next;
626 3efd8e31 2022-10-23 thomas 
627 3efd8e31 2022-10-23 thomas 	memset(env, 0, sizeof(*env));
628 3efd8e31 2022-10-23 thomas 
629 3efd8e31 2022-10-23 thomas 	gotd = env;
630 3efd8e31 2022-10-23 thomas 	gotd_proc_id = proc_id;
631 3efd8e31 2022-10-23 thomas 	TAILQ_INIT(&gotd->repos);
632 3efd8e31 2022-10-23 thomas 
633 3efd8e31 2022-10-23 thomas 	/* Apply default values. */
634 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_socket_path, GOTD_UNIX_SOCKET,
635 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_socket_path)) >= sizeof(gotd->unix_socket_path)) {
636 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix socket path too long", __func__);
637 3efd8e31 2022-10-23 thomas 		return -1;
638 3efd8e31 2022-10-23 thomas 	}
639 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_group_name, GOTD_UNIX_GROUP,
640 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_group_name)) >= sizeof(gotd->unix_group_name)) {
641 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix group name too long", __func__);
642 3efd8e31 2022-10-23 thomas 		return -1;
643 3efd8e31 2022-10-23 thomas 	}
644 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->user_name, GOTD_USER,
645 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->user_name)) >= sizeof(gotd->user_name)) {
646 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: user name too long", __func__);
647 3efd8e31 2022-10-23 thomas 		return -1;
648 3efd8e31 2022-10-23 thomas 	}
649 3efd8e31 2022-10-23 thomas 
650 3efd8e31 2022-10-23 thomas 	file = newfile(filename, 0);
651 3efd8e31 2022-10-23 thomas 	if (file == NULL) {
652 3efd8e31 2022-10-23 thomas 		/* just return, as we don't require a conf file */
653 3efd8e31 2022-10-23 thomas 		return (0);
654 3efd8e31 2022-10-23 thomas 	}
655 3efd8e31 2022-10-23 thomas 
656 3efd8e31 2022-10-23 thomas 	yyparse();
657 3efd8e31 2022-10-23 thomas 	errors = file->errors;
658 3efd8e31 2022-10-23 thomas 	closefile(file);
659 3efd8e31 2022-10-23 thomas 
660 3efd8e31 2022-10-23 thomas 	/* Free macros and check which have not been used. */
661 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
662 3efd8e31 2022-10-23 thomas 		if ((gotd->verbosity > 1) && !sym->used)
663 3efd8e31 2022-10-23 thomas 			fprintf(stderr, "warning: macro '%s' not used\n",
664 3efd8e31 2022-10-23 thomas 			    sym->nam);
665 3efd8e31 2022-10-23 thomas 		if (!sym->persist) {
666 3efd8e31 2022-10-23 thomas 			free(sym->nam);
667 3efd8e31 2022-10-23 thomas 			free(sym->val);
668 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
669 3efd8e31 2022-10-23 thomas 			free(sym);
670 3efd8e31 2022-10-23 thomas 		}
671 3efd8e31 2022-10-23 thomas 	}
672 3efd8e31 2022-10-23 thomas 
673 3efd8e31 2022-10-23 thomas 	if (errors)
674 3efd8e31 2022-10-23 thomas 		return (-1);
675 3efd8e31 2022-10-23 thomas 
676 3efd8e31 2022-10-23 thomas 	return (0);
677 3efd8e31 2022-10-23 thomas }
678 3efd8e31 2022-10-23 thomas 
679 3efd8e31 2022-10-23 thomas static struct gotd_repo *
680 3efd8e31 2022-10-23 thomas conf_new_repo(const char *name)
681 3efd8e31 2022-10-23 thomas {
682 3efd8e31 2022-10-23 thomas 	struct gotd_repo *repo;
683 3efd8e31 2022-10-23 thomas 
684 3efd8e31 2022-10-23 thomas 	if (strchr(name, '\n') != NULL) {
685 3efd8e31 2022-10-23 thomas 		fatalx("%s: repository names must not contain linefeeds: %s",
686 3efd8e31 2022-10-23 thomas 		    getprogname(), name);
687 3efd8e31 2022-10-23 thomas 	}
688 3efd8e31 2022-10-23 thomas 
689 3efd8e31 2022-10-23 thomas 	repo = calloc(1, sizeof(*repo));
690 3efd8e31 2022-10-23 thomas 	if (repo == NULL)
691 3efd8e31 2022-10-23 thomas 		fatalx("%s: calloc", __func__);
692 3efd8e31 2022-10-23 thomas 
693 729a7e24 2022-11-17 thomas 	STAILQ_INIT(&repo->rules);
694 729a7e24 2022-11-17 thomas 
695 3efd8e31 2022-10-23 thomas 	if (strlcpy(repo->name, name, sizeof(repo->name)) >=
696 3efd8e31 2022-10-23 thomas 	    sizeof(repo->name))
697 3efd8e31 2022-10-23 thomas 		fatalx("%s: strlcpy", __func__);
698 3efd8e31 2022-10-23 thomas 
699 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&gotd->repos, repo, entry);
700 3efd8e31 2022-10-23 thomas 	gotd->nrepos++;
701 3efd8e31 2022-10-23 thomas 
702 3efd8e31 2022-10-23 thomas 	return repo;
703 3efd8e31 2022-10-23 thomas };
704 729a7e24 2022-11-17 thomas 
705 729a7e24 2022-11-17 thomas static void
706 729a7e24 2022-11-17 thomas conf_new_access_rule(struct gotd_repo *repo, enum gotd_access access,
707 729a7e24 2022-11-17 thomas     int authorization, char *identifier)
708 729a7e24 2022-11-17 thomas {
709 729a7e24 2022-11-17 thomas 	struct gotd_access_rule *rule;
710 729a7e24 2022-11-17 thomas 
711 729a7e24 2022-11-17 thomas 	rule = calloc(1, sizeof(*rule));
712 729a7e24 2022-11-17 thomas 	if (rule == NULL)
713 729a7e24 2022-11-17 thomas 		fatal("calloc");
714 3efd8e31 2022-10-23 thomas 
715 729a7e24 2022-11-17 thomas 	rule->access = access;
716 729a7e24 2022-11-17 thomas 	rule->authorization = authorization;
717 729a7e24 2022-11-17 thomas 	rule->identifier = identifier;
718 729a7e24 2022-11-17 thomas 
719 729a7e24 2022-11-17 thomas 	STAILQ_INSERT_TAIL(&repo->rules, rule, entry);
720 729a7e24 2022-11-17 thomas }
721 729a7e24 2022-11-17 thomas 
722 3efd8e31 2022-10-23 thomas int
723 3efd8e31 2022-10-23 thomas symset(const char *nam, const char *val, int persist)
724 3efd8e31 2022-10-23 thomas {
725 3efd8e31 2022-10-23 thomas 	struct sym *sym;
726 3efd8e31 2022-10-23 thomas 
727 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
728 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0)
729 3efd8e31 2022-10-23 thomas 			break;
730 3efd8e31 2022-10-23 thomas 	}
731 3efd8e31 2022-10-23 thomas 
732 3efd8e31 2022-10-23 thomas 	if (sym != NULL) {
733 3efd8e31 2022-10-23 thomas 		if (sym->persist == 1)
734 3efd8e31 2022-10-23 thomas 			return (0);
735 3efd8e31 2022-10-23 thomas 		else {
736 3efd8e31 2022-10-23 thomas 			free(sym->nam);
737 3efd8e31 2022-10-23 thomas 			free(sym->val);
738 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
739 3efd8e31 2022-10-23 thomas 			free(sym);
740 3efd8e31 2022-10-23 thomas 		}
741 3efd8e31 2022-10-23 thomas 	}
742 3efd8e31 2022-10-23 thomas 	sym = calloc(1, sizeof(*sym));
743 3efd8e31 2022-10-23 thomas 	if (sym == NULL)
744 3efd8e31 2022-10-23 thomas 		return (-1);
745 3efd8e31 2022-10-23 thomas 
746 3efd8e31 2022-10-23 thomas 	sym->nam = strdup(nam);
747 3efd8e31 2022-10-23 thomas 	if (sym->nam == NULL) {
748 3efd8e31 2022-10-23 thomas 		free(sym);
749 3efd8e31 2022-10-23 thomas 		return (-1);
750 3efd8e31 2022-10-23 thomas 	}
751 3efd8e31 2022-10-23 thomas 	sym->val = strdup(val);
752 3efd8e31 2022-10-23 thomas 	if (sym->val == NULL) {
753 3efd8e31 2022-10-23 thomas 		free(sym->nam);
754 3efd8e31 2022-10-23 thomas 		free(sym);
755 3efd8e31 2022-10-23 thomas 		return (-1);
756 3efd8e31 2022-10-23 thomas 	}
757 3efd8e31 2022-10-23 thomas 	sym->used = 0;
758 3efd8e31 2022-10-23 thomas 	sym->persist = persist;
759 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
760 3efd8e31 2022-10-23 thomas 	return (0);
761 3efd8e31 2022-10-23 thomas }
762 3efd8e31 2022-10-23 thomas 
763 3efd8e31 2022-10-23 thomas char *
764 3efd8e31 2022-10-23 thomas symget(const char *nam)
765 3efd8e31 2022-10-23 thomas {
766 3efd8e31 2022-10-23 thomas 	struct sym *sym;
767 3efd8e31 2022-10-23 thomas 
768 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
769 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0) {
770 3efd8e31 2022-10-23 thomas 			sym->used = 1;
771 3efd8e31 2022-10-23 thomas 			return (sym->val);
772 3efd8e31 2022-10-23 thomas 		}
773 3efd8e31 2022-10-23 thomas 	}
774 3efd8e31 2022-10-23 thomas 	return (NULL);
775 3efd8e31 2022-10-23 thomas }