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 da9a9ea8 2022-11-17 thomas %token	RO RW
103 3efd8e31 2022-10-23 thomas 
104 3efd8e31 2022-10-23 thomas %token	<v.string>	STRING
105 3efd8e31 2022-10-23 thomas %token	<v.number>	NUMBER
106 3efd8e31 2022-10-23 thomas %type	<v.number>	boolean
107 3efd8e31 2022-10-23 thomas 
108 3efd8e31 2022-10-23 thomas %%
109 3efd8e31 2022-10-23 thomas 
110 3efd8e31 2022-10-23 thomas grammar		:
111 3efd8e31 2022-10-23 thomas 		| grammar '\n'
112 3efd8e31 2022-10-23 thomas 		| grammar main '\n'
113 3efd8e31 2022-10-23 thomas 		| grammar repository '\n'
114 3efd8e31 2022-10-23 thomas 		;
115 3efd8e31 2022-10-23 thomas 
116 3efd8e31 2022-10-23 thomas boolean		: STRING {
117 3efd8e31 2022-10-23 thomas 			if (strcasecmp($1, "1") == 0 ||
118 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "yes") == 0 ||
119 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "on") == 0)
120 3efd8e31 2022-10-23 thomas 				$$ = 1;
121 3efd8e31 2022-10-23 thomas 			else if (strcasecmp($1, "0") == 0 ||
122 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "off") == 0 ||
123 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "no") == 0)
124 3efd8e31 2022-10-23 thomas 				$$ = 0;
125 3efd8e31 2022-10-23 thomas 			else {
126 3efd8e31 2022-10-23 thomas 				yyerror("invalid boolean value '%s'", $1);
127 3efd8e31 2022-10-23 thomas 				free($1);
128 3efd8e31 2022-10-23 thomas 				YYERROR;
129 3efd8e31 2022-10-23 thomas 			}
130 3efd8e31 2022-10-23 thomas 			free($1);
131 3efd8e31 2022-10-23 thomas 		}
132 3efd8e31 2022-10-23 thomas 		| ON { $$ = 1; }
133 3efd8e31 2022-10-23 thomas 		| NUMBER { $$ = $1; }
134 3efd8e31 2022-10-23 thomas 		;
135 3efd8e31 2022-10-23 thomas 
136 3efd8e31 2022-10-23 thomas main		: UNIX_SOCKET STRING {
137 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
138 3efd8e31 2022-10-23 thomas 				if (strlcpy(gotd->unix_socket_path, $2,
139 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) >=
140 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) {
141 3efd8e31 2022-10-23 thomas 					yyerror("%s: unix socket path too long",
142 3efd8e31 2022-10-23 thomas 					    __func__);
143 3efd8e31 2022-10-23 thomas 					free($2);
144 3efd8e31 2022-10-23 thomas 					YYERROR;
145 3efd8e31 2022-10-23 thomas 				}
146 3efd8e31 2022-10-23 thomas 			}
147 3efd8e31 2022-10-23 thomas 			free($2);
148 3efd8e31 2022-10-23 thomas 		}
149 3efd8e31 2022-10-23 thomas 		| UNIX_GROUP STRING {
150 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->unix_group_name, $2,
151 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) >=
152 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) {
153 3efd8e31 2022-10-23 thomas 				yyerror("%s: unix group name too long",
154 3efd8e31 2022-10-23 thomas 				    __func__);
155 3efd8e31 2022-10-23 thomas 				free($2);
156 3efd8e31 2022-10-23 thomas 				YYERROR;
157 3efd8e31 2022-10-23 thomas 			}
158 3efd8e31 2022-10-23 thomas 			free($2);
159 3efd8e31 2022-10-23 thomas 		}
160 3efd8e31 2022-10-23 thomas 		| USER STRING {
161 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->user_name, $2,
162 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) >=
163 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) {
164 3efd8e31 2022-10-23 thomas 				yyerror("%s: user name too long", __func__);
165 3efd8e31 2022-10-23 thomas 				free($2);
166 3efd8e31 2022-10-23 thomas 				YYERROR;
167 3efd8e31 2022-10-23 thomas 			}
168 3efd8e31 2022-10-23 thomas 			free($2);
169 3efd8e31 2022-10-23 thomas 		}
170 3efd8e31 2022-10-23 thomas 		;
171 3efd8e31 2022-10-23 thomas 
172 3efd8e31 2022-10-23 thomas repository	: REPOSITORY STRING {
173 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
174 3efd8e31 2022-10-23 thomas 
175 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
176 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
177 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
178 3efd8e31 2022-10-23 thomas 					free($2);
179 3efd8e31 2022-10-23 thomas 					YYERROR;
180 3efd8e31 2022-10-23 thomas 				}
181 3efd8e31 2022-10-23 thomas 			}
182 3efd8e31 2022-10-23 thomas 
183 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
184 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
185 3efd8e31 2022-10-23 thomas 			}
186 3efd8e31 2022-10-23 thomas 			free($2);
187 3efd8e31 2022-10-23 thomas 		}
188 3efd8e31 2022-10-23 thomas 		| REPOSITORY STRING {
189 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
190 3efd8e31 2022-10-23 thomas 
191 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
192 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
193 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
194 3efd8e31 2022-10-23 thomas 					free($2);
195 3efd8e31 2022-10-23 thomas 					YYERROR;
196 3efd8e31 2022-10-23 thomas 				}
197 3efd8e31 2022-10-23 thomas 			}
198 3efd8e31 2022-10-23 thomas 
199 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
200 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
201 3efd8e31 2022-10-23 thomas 			}
202 3efd8e31 2022-10-23 thomas 			free($2);
203 3efd8e31 2022-10-23 thomas 		} '{' optnl repoopts2 '}' {
204 3efd8e31 2022-10-23 thomas 		}
205 3efd8e31 2022-10-23 thomas 		;
206 3efd8e31 2022-10-23 thomas 
207 3efd8e31 2022-10-23 thomas repoopts1	: PATH STRING {
208 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
209 3efd8e31 2022-10-23 thomas 				if (!got_path_is_absolute($2)) {
210 3efd8e31 2022-10-23 thomas 					yyerror("%s: path %s is not absolute",
211 3efd8e31 2022-10-23 thomas 					    __func__, $2);
212 3efd8e31 2022-10-23 thomas 					free($2);
213 3efd8e31 2022-10-23 thomas 					YYERROR;
214 3efd8e31 2022-10-23 thomas 				}
215 3efd8e31 2022-10-23 thomas 				if (strlcpy(new_repo->path, $2,
216 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) >=
217 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) {
218 3efd8e31 2022-10-23 thomas 					yyerror("%s: path truncated", __func__);
219 3efd8e31 2022-10-23 thomas 					free($2);
220 3efd8e31 2022-10-23 thomas 					YYERROR;
221 3efd8e31 2022-10-23 thomas 				}
222 3efd8e31 2022-10-23 thomas 			}
223 3efd8e31 2022-10-23 thomas 			free($2);
224 729a7e24 2022-11-17 thomas 		}
225 729a7e24 2022-11-17 thomas 		| PERMIT RO STRING {
226 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
227 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
228 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED, GOTD_AUTH_READ, $3);
229 729a7e24 2022-11-17 thomas 			}
230 729a7e24 2022-11-17 thomas 		}
231 729a7e24 2022-11-17 thomas 		| PERMIT RW STRING {
232 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
233 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
234 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED,
235 729a7e24 2022-11-17 thomas 				    GOTD_AUTH_READ | GOTD_AUTH_WRITE, $3);
236 729a7e24 2022-11-17 thomas 			}
237 3efd8e31 2022-10-23 thomas 		}
238 729a7e24 2022-11-17 thomas 		| DENY STRING {
239 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
240 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
241 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_DENIED, 0, $2);
242 729a7e24 2022-11-17 thomas 			}
243 729a7e24 2022-11-17 thomas 		}
244 3efd8e31 2022-10-23 thomas 		;
245 3efd8e31 2022-10-23 thomas 
246 3efd8e31 2022-10-23 thomas repoopts2	: repoopts2 repoopts1 nl
247 3efd8e31 2022-10-23 thomas 		| repoopts1 optnl
248 3efd8e31 2022-10-23 thomas 		;
249 3efd8e31 2022-10-23 thomas 
250 3efd8e31 2022-10-23 thomas nl		: '\n' optnl
251 3efd8e31 2022-10-23 thomas 		;
252 3efd8e31 2022-10-23 thomas 
253 3efd8e31 2022-10-23 thomas optnl		: '\n' optnl		/* zero or more newlines */
254 3efd8e31 2022-10-23 thomas 		| /* empty */
255 3efd8e31 2022-10-23 thomas 		;
256 3efd8e31 2022-10-23 thomas 
257 3efd8e31 2022-10-23 thomas %%
258 3efd8e31 2022-10-23 thomas 
259 3efd8e31 2022-10-23 thomas struct keywords {
260 3efd8e31 2022-10-23 thomas 	const char	*k_name;
261 3efd8e31 2022-10-23 thomas 	int		 k_val;
262 3efd8e31 2022-10-23 thomas };
263 3efd8e31 2022-10-23 thomas 
264 3efd8e31 2022-10-23 thomas int
265 3efd8e31 2022-10-23 thomas yyerror(const char *fmt, ...)
266 3efd8e31 2022-10-23 thomas {
267 3efd8e31 2022-10-23 thomas 	va_list ap;
268 3efd8e31 2022-10-23 thomas 	char *msg;
269 3efd8e31 2022-10-23 thomas 
270 3efd8e31 2022-10-23 thomas 	file->errors++;
271 3efd8e31 2022-10-23 thomas 	va_start(ap, fmt);
272 3efd8e31 2022-10-23 thomas 	if (vasprintf(&msg, fmt, ap) == -1)
273 3efd8e31 2022-10-23 thomas 		fatalx("yyerror vasprintf");
274 3efd8e31 2022-10-23 thomas 	va_end(ap);
275 3efd8e31 2022-10-23 thomas 	logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
276 3efd8e31 2022-10-23 thomas 	free(msg);
277 3efd8e31 2022-10-23 thomas 	return (0);
278 3efd8e31 2022-10-23 thomas }
279 3efd8e31 2022-10-23 thomas 
280 3efd8e31 2022-10-23 thomas int
281 3efd8e31 2022-10-23 thomas kw_cmp(const void *k, const void *e)
282 3efd8e31 2022-10-23 thomas {
283 3efd8e31 2022-10-23 thomas 	return (strcmp(k, ((const struct keywords *)e)->k_name));
284 3efd8e31 2022-10-23 thomas }
285 3efd8e31 2022-10-23 thomas 
286 3efd8e31 2022-10-23 thomas int
287 3efd8e31 2022-10-23 thomas lookup(char *s)
288 3efd8e31 2022-10-23 thomas {
289 3efd8e31 2022-10-23 thomas 	/* This has to be sorted always. */
290 3efd8e31 2022-10-23 thomas 	static const struct keywords keywords[] = {
291 729a7e24 2022-11-17 thomas 		{ "deny",			DENY },
292 3efd8e31 2022-10-23 thomas 		{ "on",				ON },
293 3efd8e31 2022-10-23 thomas 		{ "path",			PATH },
294 729a7e24 2022-11-17 thomas 		{ "permit",			PERMIT },
295 3efd8e31 2022-10-23 thomas 		{ "repository",			REPOSITORY },
296 729a7e24 2022-11-17 thomas 		{ "ro",				RO },
297 729a7e24 2022-11-17 thomas 		{ "rw",				RW },
298 3efd8e31 2022-10-23 thomas 		{ "unix_group",			UNIX_GROUP },
299 3efd8e31 2022-10-23 thomas 		{ "unix_socket",		UNIX_SOCKET },
300 3efd8e31 2022-10-23 thomas 		{ "user",			USER },
301 3efd8e31 2022-10-23 thomas 	};
302 3efd8e31 2022-10-23 thomas 	const struct keywords *p;
303 3efd8e31 2022-10-23 thomas 
304 3efd8e31 2022-10-23 thomas 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
305 3efd8e31 2022-10-23 thomas 	    sizeof(keywords[0]), kw_cmp);
306 3efd8e31 2022-10-23 thomas 
307 3efd8e31 2022-10-23 thomas 	if (p)
308 3efd8e31 2022-10-23 thomas 		return (p->k_val);
309 3efd8e31 2022-10-23 thomas 	else
310 3efd8e31 2022-10-23 thomas 		return (STRING);
311 3efd8e31 2022-10-23 thomas }
312 3efd8e31 2022-10-23 thomas 
313 3efd8e31 2022-10-23 thomas #define MAXPUSHBACK	128
314 3efd8e31 2022-10-23 thomas 
315 3efd8e31 2022-10-23 thomas unsigned char *parsebuf;
316 3efd8e31 2022-10-23 thomas int parseindex;
317 3efd8e31 2022-10-23 thomas unsigned char pushback_buffer[MAXPUSHBACK];
318 3efd8e31 2022-10-23 thomas int pushback_index = 0;
319 3efd8e31 2022-10-23 thomas 
320 3efd8e31 2022-10-23 thomas int
321 3efd8e31 2022-10-23 thomas lgetc(int quotec)
322 3efd8e31 2022-10-23 thomas {
323 3efd8e31 2022-10-23 thomas 	int c, next;
324 3efd8e31 2022-10-23 thomas 
325 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
326 3efd8e31 2022-10-23 thomas 		/* Read character from the parsebuffer instead of input. */
327 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0) {
328 3efd8e31 2022-10-23 thomas 			c = parsebuf[parseindex++];
329 3efd8e31 2022-10-23 thomas 			if (c != '\0')
330 3efd8e31 2022-10-23 thomas 				return (c);
331 3efd8e31 2022-10-23 thomas 			parsebuf = NULL;
332 3efd8e31 2022-10-23 thomas 		} else
333 3efd8e31 2022-10-23 thomas 			parseindex++;
334 3efd8e31 2022-10-23 thomas 	}
335 3efd8e31 2022-10-23 thomas 
336 3efd8e31 2022-10-23 thomas 	if (pushback_index)
337 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[--pushback_index]);
338 3efd8e31 2022-10-23 thomas 
339 3efd8e31 2022-10-23 thomas 	if (quotec) {
340 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
341 3efd8e31 2022-10-23 thomas 		if (c == EOF)
342 3efd8e31 2022-10-23 thomas 			yyerror("reached end of file while parsing "
343 3efd8e31 2022-10-23 thomas 			    "quoted string");
344 3efd8e31 2022-10-23 thomas 		return (c);
345 3efd8e31 2022-10-23 thomas 	}
346 3efd8e31 2022-10-23 thomas 
347 3efd8e31 2022-10-23 thomas 	c = getc(file->stream);
348 3efd8e31 2022-10-23 thomas 	while (c == '\\') {
349 3efd8e31 2022-10-23 thomas 		next = getc(file->stream);
350 3efd8e31 2022-10-23 thomas 		if (next != '\n') {
351 3efd8e31 2022-10-23 thomas 			c = next;
352 3efd8e31 2022-10-23 thomas 			break;
353 3efd8e31 2022-10-23 thomas 		}
354 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
355 3efd8e31 2022-10-23 thomas 		file->lineno++;
356 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
357 3efd8e31 2022-10-23 thomas 	}
358 3efd8e31 2022-10-23 thomas 
359 3efd8e31 2022-10-23 thomas 	return (c);
360 3efd8e31 2022-10-23 thomas }
361 3efd8e31 2022-10-23 thomas 
362 3efd8e31 2022-10-23 thomas int
363 3efd8e31 2022-10-23 thomas lungetc(int c)
364 3efd8e31 2022-10-23 thomas {
365 3efd8e31 2022-10-23 thomas 	if (c == EOF)
366 3efd8e31 2022-10-23 thomas 		return (EOF);
367 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
368 3efd8e31 2022-10-23 thomas 		parseindex--;
369 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0)
370 3efd8e31 2022-10-23 thomas 			return (c);
371 3efd8e31 2022-10-23 thomas 	}
372 3efd8e31 2022-10-23 thomas 	if (pushback_index < MAXPUSHBACK-1)
373 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[pushback_index++] = c);
374 3efd8e31 2022-10-23 thomas 	else
375 3efd8e31 2022-10-23 thomas 		return (EOF);
376 3efd8e31 2022-10-23 thomas }
377 3efd8e31 2022-10-23 thomas 
378 3efd8e31 2022-10-23 thomas int
379 3efd8e31 2022-10-23 thomas findeol(void)
380 3efd8e31 2022-10-23 thomas {
381 3efd8e31 2022-10-23 thomas 	int c;
382 3efd8e31 2022-10-23 thomas 
383 3efd8e31 2022-10-23 thomas 	parsebuf = NULL;
384 3efd8e31 2022-10-23 thomas 
385 3efd8e31 2022-10-23 thomas 	/* Skip to either EOF or the first real EOL. */
386 3efd8e31 2022-10-23 thomas 	while (1) {
387 3efd8e31 2022-10-23 thomas 		if (pushback_index)
388 3efd8e31 2022-10-23 thomas 			c = pushback_buffer[--pushback_index];
389 3efd8e31 2022-10-23 thomas 		else
390 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
391 3efd8e31 2022-10-23 thomas 		if (c == '\n') {
392 3efd8e31 2022-10-23 thomas 			file->lineno++;
393 3efd8e31 2022-10-23 thomas 			break;
394 3efd8e31 2022-10-23 thomas 		}
395 3efd8e31 2022-10-23 thomas 		if (c == EOF)
396 3efd8e31 2022-10-23 thomas 			break;
397 3efd8e31 2022-10-23 thomas 	}
398 3efd8e31 2022-10-23 thomas 	return (ERROR);
399 3efd8e31 2022-10-23 thomas }
400 3efd8e31 2022-10-23 thomas 
401 3efd8e31 2022-10-23 thomas int
402 3efd8e31 2022-10-23 thomas yylex(void)
403 3efd8e31 2022-10-23 thomas {
404 3efd8e31 2022-10-23 thomas 	unsigned char buf[8096];
405 3efd8e31 2022-10-23 thomas 	unsigned char *p, *val;
406 3efd8e31 2022-10-23 thomas 	int quotec, next, c;
407 3efd8e31 2022-10-23 thomas 	int token;
408 3efd8e31 2022-10-23 thomas 
409 3efd8e31 2022-10-23 thomas top:
410 3efd8e31 2022-10-23 thomas 	p = buf;
411 3efd8e31 2022-10-23 thomas 	c = lgetc(0);
412 3efd8e31 2022-10-23 thomas 	while (c == ' ' || c == '\t')
413 3efd8e31 2022-10-23 thomas 		c = lgetc(0); /* nothing */
414 3efd8e31 2022-10-23 thomas 
415 3efd8e31 2022-10-23 thomas 	yylval.lineno = file->lineno;
416 3efd8e31 2022-10-23 thomas 	if (c == '#') {
417 3efd8e31 2022-10-23 thomas 		c = lgetc(0);
418 3efd8e31 2022-10-23 thomas 		while (c != '\n' && c != EOF)
419 3efd8e31 2022-10-23 thomas 			c = lgetc(0); /* nothing */
420 3efd8e31 2022-10-23 thomas 	}
421 3efd8e31 2022-10-23 thomas 	if (c == '$' && parsebuf == NULL) {
422 3efd8e31 2022-10-23 thomas 		while (1) {
423 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
424 3efd8e31 2022-10-23 thomas 			if (c == EOF)
425 3efd8e31 2022-10-23 thomas 				return (0);
426 3efd8e31 2022-10-23 thomas 
427 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
428 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
429 3efd8e31 2022-10-23 thomas 				return (findeol());
430 3efd8e31 2022-10-23 thomas 			}
431 3efd8e31 2022-10-23 thomas 			if (isalnum(c) || c == '_') {
432 3efd8e31 2022-10-23 thomas 				*p++ = c;
433 3efd8e31 2022-10-23 thomas 				continue;
434 3efd8e31 2022-10-23 thomas 			}
435 3efd8e31 2022-10-23 thomas 			*p = '\0';
436 3efd8e31 2022-10-23 thomas 			lungetc(c);
437 3efd8e31 2022-10-23 thomas 			break;
438 3efd8e31 2022-10-23 thomas 		}
439 3efd8e31 2022-10-23 thomas 		val = symget(buf);
440 3efd8e31 2022-10-23 thomas 		if (val == NULL) {
441 3efd8e31 2022-10-23 thomas 			yyerror("macro '%s' not defined", buf);
442 3efd8e31 2022-10-23 thomas 			return (findeol());
443 3efd8e31 2022-10-23 thomas 		}
444 3efd8e31 2022-10-23 thomas 		parsebuf = val;
445 3efd8e31 2022-10-23 thomas 		parseindex = 0;
446 3efd8e31 2022-10-23 thomas 		goto top;
447 3efd8e31 2022-10-23 thomas 	}
448 3efd8e31 2022-10-23 thomas 
449 3efd8e31 2022-10-23 thomas 	switch (c) {
450 3efd8e31 2022-10-23 thomas 	case '\'':
451 3efd8e31 2022-10-23 thomas 	case '"':
452 3efd8e31 2022-10-23 thomas 		quotec = c;
453 3efd8e31 2022-10-23 thomas 		while (1) {
454 3efd8e31 2022-10-23 thomas 			c = lgetc(quotec);
455 3efd8e31 2022-10-23 thomas 			if (c == EOF)
456 3efd8e31 2022-10-23 thomas 				return (0);
457 3efd8e31 2022-10-23 thomas 			if (c == '\n') {
458 3efd8e31 2022-10-23 thomas 				file->lineno++;
459 3efd8e31 2022-10-23 thomas 				continue;
460 3efd8e31 2022-10-23 thomas 			} else if (c == '\\') {
461 3efd8e31 2022-10-23 thomas 				next = lgetc(quotec);
462 3efd8e31 2022-10-23 thomas 				if (next == EOF)
463 3efd8e31 2022-10-23 thomas 					return (0);
464 3efd8e31 2022-10-23 thomas 				if (next == quotec || c == ' ' || c == '\t')
465 3efd8e31 2022-10-23 thomas 					c = next;
466 3efd8e31 2022-10-23 thomas 				else if (next == '\n') {
467 3efd8e31 2022-10-23 thomas 					file->lineno++;
468 3efd8e31 2022-10-23 thomas 					continue;
469 3efd8e31 2022-10-23 thomas 				} else
470 3efd8e31 2022-10-23 thomas 					lungetc(next);
471 3efd8e31 2022-10-23 thomas 			} else if (c == quotec) {
472 3efd8e31 2022-10-23 thomas 				*p = '\0';
473 3efd8e31 2022-10-23 thomas 				break;
474 3efd8e31 2022-10-23 thomas 			} else if (c == '\0') {
475 3efd8e31 2022-10-23 thomas 				yyerror("syntax error");
476 3efd8e31 2022-10-23 thomas 				return (findeol());
477 3efd8e31 2022-10-23 thomas 			}
478 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
479 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
480 3efd8e31 2022-10-23 thomas 				return (findeol());
481 3efd8e31 2022-10-23 thomas 			}
482 3efd8e31 2022-10-23 thomas 			*p++ = c;
483 3efd8e31 2022-10-23 thomas 		}
484 3efd8e31 2022-10-23 thomas 		yylval.v.string = strdup(buf);
485 3efd8e31 2022-10-23 thomas 		if (yylval.v.string == NULL)
486 3efd8e31 2022-10-23 thomas 			err(1, "yylex: strdup");
487 3efd8e31 2022-10-23 thomas 		return (STRING);
488 3efd8e31 2022-10-23 thomas 	}
489 3efd8e31 2022-10-23 thomas 
490 3efd8e31 2022-10-23 thomas #define allowed_to_end_number(x) \
491 3efd8e31 2022-10-23 thomas 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
492 3efd8e31 2022-10-23 thomas 
493 3efd8e31 2022-10-23 thomas 	if (c == '-' || isdigit(c)) {
494 3efd8e31 2022-10-23 thomas 		do {
495 3efd8e31 2022-10-23 thomas 			*p++ = c;
496 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
497 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
498 3efd8e31 2022-10-23 thomas 				return (findeol());
499 3efd8e31 2022-10-23 thomas 			}
500 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
501 3efd8e31 2022-10-23 thomas 		} while (c != EOF && isdigit(c));
502 3efd8e31 2022-10-23 thomas 		lungetc(c);
503 3efd8e31 2022-10-23 thomas 		if (p == buf + 1 && buf[0] == '-')
504 3efd8e31 2022-10-23 thomas 			goto nodigits;
505 3efd8e31 2022-10-23 thomas 		if (c == EOF || allowed_to_end_number(c)) {
506 3efd8e31 2022-10-23 thomas 			const char *errstr = NULL;
507 3efd8e31 2022-10-23 thomas 
508 3efd8e31 2022-10-23 thomas 			*p = '\0';
509 3efd8e31 2022-10-23 thomas 			yylval.v.number = strtonum(buf, LLONG_MIN,
510 3efd8e31 2022-10-23 thomas 			    LLONG_MAX, &errstr);
511 3efd8e31 2022-10-23 thomas 			if (errstr) {
512 3efd8e31 2022-10-23 thomas 				yyerror("\"%s\" invalid number: %s",
513 3efd8e31 2022-10-23 thomas 				    buf, errstr);
514 3efd8e31 2022-10-23 thomas 				return (findeol());
515 3efd8e31 2022-10-23 thomas 			}
516 3efd8e31 2022-10-23 thomas 			return (NUMBER);
517 3efd8e31 2022-10-23 thomas 		} else {
518 3efd8e31 2022-10-23 thomas nodigits:
519 3efd8e31 2022-10-23 thomas 			while (p > buf + 1)
520 3efd8e31 2022-10-23 thomas 				lungetc(*--p);
521 3efd8e31 2022-10-23 thomas 			c = *--p;
522 3efd8e31 2022-10-23 thomas 			if (c == '-')
523 3efd8e31 2022-10-23 thomas 				return (c);
524 3efd8e31 2022-10-23 thomas 		}
525 3efd8e31 2022-10-23 thomas 	}
526 3efd8e31 2022-10-23 thomas 
527 3efd8e31 2022-10-23 thomas #define allowed_in_string(x) \
528 3efd8e31 2022-10-23 thomas 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
529 3efd8e31 2022-10-23 thomas 	x != '{' && x != '}' && \
530 3efd8e31 2022-10-23 thomas 	x != '!' && x != '=' && x != '#' && \
531 3efd8e31 2022-10-23 thomas 	x != ','))
532 3efd8e31 2022-10-23 thomas 
533 3efd8e31 2022-10-23 thomas 	if (isalnum(c) || c == ':' || c == '_') {
534 3efd8e31 2022-10-23 thomas 		do {
535 3efd8e31 2022-10-23 thomas 			*p++ = c;
536 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
537 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
538 3efd8e31 2022-10-23 thomas 				return (findeol());
539 3efd8e31 2022-10-23 thomas 			}
540 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
541 3efd8e31 2022-10-23 thomas 		} while (c != EOF && (allowed_in_string(c)));
542 3efd8e31 2022-10-23 thomas 		lungetc(c);
543 3efd8e31 2022-10-23 thomas 		*p = '\0';
544 3efd8e31 2022-10-23 thomas 		token = lookup(buf);
545 3efd8e31 2022-10-23 thomas 		if (token == STRING) {
546 3efd8e31 2022-10-23 thomas 			yylval.v.string = strdup(buf);
547 3efd8e31 2022-10-23 thomas 			if (yylval.v.string == NULL)
548 3efd8e31 2022-10-23 thomas 				err(1, "yylex: strdup");
549 3efd8e31 2022-10-23 thomas 		}
550 3efd8e31 2022-10-23 thomas 		return (token);
551 3efd8e31 2022-10-23 thomas 	}
552 3efd8e31 2022-10-23 thomas 	if (c == '\n') {
553 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
554 3efd8e31 2022-10-23 thomas 		file->lineno++;
555 3efd8e31 2022-10-23 thomas 	}
556 3efd8e31 2022-10-23 thomas 	if (c == EOF)
557 3efd8e31 2022-10-23 thomas 		return (0);
558 3efd8e31 2022-10-23 thomas 	return (c);
559 3efd8e31 2022-10-23 thomas }
560 3efd8e31 2022-10-23 thomas 
561 3efd8e31 2022-10-23 thomas int
562 3efd8e31 2022-10-23 thomas check_file_secrecy(int fd, const char *fname)
563 3efd8e31 2022-10-23 thomas {
564 3efd8e31 2022-10-23 thomas 	struct stat st;
565 3efd8e31 2022-10-23 thomas 
566 3efd8e31 2022-10-23 thomas 	if (fstat(fd, &st)) {
567 3efd8e31 2022-10-23 thomas 		log_warn("cannot stat %s", fname);
568 3efd8e31 2022-10-23 thomas 		return (-1);
569 3efd8e31 2022-10-23 thomas 	}
570 3efd8e31 2022-10-23 thomas 	if (st.st_uid != 0 && st.st_uid != getuid()) {
571 3efd8e31 2022-10-23 thomas 		log_warnx("%s: owner not root or current user", fname);
572 3efd8e31 2022-10-23 thomas 		return (-1);
573 3efd8e31 2022-10-23 thomas 	}
574 3efd8e31 2022-10-23 thomas 	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
575 3efd8e31 2022-10-23 thomas 		log_warnx("%s: group writable or world read/writable", fname);
576 3efd8e31 2022-10-23 thomas 		return (-1);
577 3efd8e31 2022-10-23 thomas 	}
578 3efd8e31 2022-10-23 thomas 	return (0);
579 3efd8e31 2022-10-23 thomas }
580 3efd8e31 2022-10-23 thomas 
581 3efd8e31 2022-10-23 thomas struct file *
582 3efd8e31 2022-10-23 thomas newfile(const char *name, int secret)
583 3efd8e31 2022-10-23 thomas {
584 3efd8e31 2022-10-23 thomas 	struct file *nfile;
585 3efd8e31 2022-10-23 thomas 
586 3efd8e31 2022-10-23 thomas 	nfile = calloc(1, sizeof(struct file));
587 3efd8e31 2022-10-23 thomas 	if (nfile == NULL) {
588 3efd8e31 2022-10-23 thomas 		log_warn("calloc");
589 3efd8e31 2022-10-23 thomas 		return (NULL);
590 3efd8e31 2022-10-23 thomas 	}
591 3efd8e31 2022-10-23 thomas 	nfile->name = strdup(name);
592 3efd8e31 2022-10-23 thomas 	if (nfile->name == NULL) {
593 3efd8e31 2022-10-23 thomas 		log_warn("strdup");
594 3efd8e31 2022-10-23 thomas 		free(nfile);
595 3efd8e31 2022-10-23 thomas 		return (NULL);
596 3efd8e31 2022-10-23 thomas 	}
597 3efd8e31 2022-10-23 thomas 	nfile->stream = fopen(nfile->name, "r");
598 3efd8e31 2022-10-23 thomas 	if (nfile->stream == NULL) {
599 3efd8e31 2022-10-23 thomas 		/* no warning, we don't require a conf file */
600 3efd8e31 2022-10-23 thomas 		free(nfile->name);
601 3efd8e31 2022-10-23 thomas 		free(nfile);
602 3efd8e31 2022-10-23 thomas 		return (NULL);
603 3efd8e31 2022-10-23 thomas 	} else if (secret &&
604 3efd8e31 2022-10-23 thomas 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
605 3efd8e31 2022-10-23 thomas 		fclose(nfile->stream);
606 3efd8e31 2022-10-23 thomas 		free(nfile->name);
607 3efd8e31 2022-10-23 thomas 		free(nfile);
608 3efd8e31 2022-10-23 thomas 		return (NULL);
609 3efd8e31 2022-10-23 thomas 	}
610 3efd8e31 2022-10-23 thomas 	nfile->lineno = 1;
611 3efd8e31 2022-10-23 thomas 	return (nfile);
612 3efd8e31 2022-10-23 thomas }
613 3efd8e31 2022-10-23 thomas 
614 3efd8e31 2022-10-23 thomas static void
615 3efd8e31 2022-10-23 thomas closefile(struct file *xfile)
616 3efd8e31 2022-10-23 thomas {
617 3efd8e31 2022-10-23 thomas 	fclose(xfile->stream);
618 3efd8e31 2022-10-23 thomas 	free(xfile->name);
619 3efd8e31 2022-10-23 thomas 	free(xfile);
620 3efd8e31 2022-10-23 thomas }
621 3efd8e31 2022-10-23 thomas 
622 3efd8e31 2022-10-23 thomas int
623 3efd8e31 2022-10-23 thomas parse_config(const char *filename, enum gotd_procid proc_id,
624 3efd8e31 2022-10-23 thomas     struct gotd *env)
625 3efd8e31 2022-10-23 thomas {
626 3efd8e31 2022-10-23 thomas 	struct sym *sym, *next;
627 3efd8e31 2022-10-23 thomas 
628 3efd8e31 2022-10-23 thomas 	memset(env, 0, sizeof(*env));
629 3efd8e31 2022-10-23 thomas 
630 3efd8e31 2022-10-23 thomas 	gotd = env;
631 3efd8e31 2022-10-23 thomas 	gotd_proc_id = proc_id;
632 3efd8e31 2022-10-23 thomas 	TAILQ_INIT(&gotd->repos);
633 3efd8e31 2022-10-23 thomas 
634 3efd8e31 2022-10-23 thomas 	/* Apply default values. */
635 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_socket_path, GOTD_UNIX_SOCKET,
636 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_socket_path)) >= sizeof(gotd->unix_socket_path)) {
637 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix socket path too long", __func__);
638 3efd8e31 2022-10-23 thomas 		return -1;
639 3efd8e31 2022-10-23 thomas 	}
640 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_group_name, GOTD_UNIX_GROUP,
641 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_group_name)) >= sizeof(gotd->unix_group_name)) {
642 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix group name too long", __func__);
643 3efd8e31 2022-10-23 thomas 		return -1;
644 3efd8e31 2022-10-23 thomas 	}
645 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->user_name, GOTD_USER,
646 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->user_name)) >= sizeof(gotd->user_name)) {
647 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: user name too long", __func__);
648 3efd8e31 2022-10-23 thomas 		return -1;
649 3efd8e31 2022-10-23 thomas 	}
650 3efd8e31 2022-10-23 thomas 
651 3efd8e31 2022-10-23 thomas 	file = newfile(filename, 0);
652 3efd8e31 2022-10-23 thomas 	if (file == NULL) {
653 3efd8e31 2022-10-23 thomas 		/* just return, as we don't require a conf file */
654 3efd8e31 2022-10-23 thomas 		return (0);
655 3efd8e31 2022-10-23 thomas 	}
656 3efd8e31 2022-10-23 thomas 
657 3efd8e31 2022-10-23 thomas 	yyparse();
658 3efd8e31 2022-10-23 thomas 	errors = file->errors;
659 3efd8e31 2022-10-23 thomas 	closefile(file);
660 3efd8e31 2022-10-23 thomas 
661 3efd8e31 2022-10-23 thomas 	/* Free macros and check which have not been used. */
662 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
663 3efd8e31 2022-10-23 thomas 		if ((gotd->verbosity > 1) && !sym->used)
664 3efd8e31 2022-10-23 thomas 			fprintf(stderr, "warning: macro '%s' not used\n",
665 3efd8e31 2022-10-23 thomas 			    sym->nam);
666 3efd8e31 2022-10-23 thomas 		if (!sym->persist) {
667 3efd8e31 2022-10-23 thomas 			free(sym->nam);
668 3efd8e31 2022-10-23 thomas 			free(sym->val);
669 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
670 3efd8e31 2022-10-23 thomas 			free(sym);
671 3efd8e31 2022-10-23 thomas 		}
672 3efd8e31 2022-10-23 thomas 	}
673 3efd8e31 2022-10-23 thomas 
674 3efd8e31 2022-10-23 thomas 	if (errors)
675 3efd8e31 2022-10-23 thomas 		return (-1);
676 3efd8e31 2022-10-23 thomas 
677 3efd8e31 2022-10-23 thomas 	return (0);
678 3efd8e31 2022-10-23 thomas }
679 3efd8e31 2022-10-23 thomas 
680 3efd8e31 2022-10-23 thomas static struct gotd_repo *
681 3efd8e31 2022-10-23 thomas conf_new_repo(const char *name)
682 3efd8e31 2022-10-23 thomas {
683 3efd8e31 2022-10-23 thomas 	struct gotd_repo *repo;
684 3efd8e31 2022-10-23 thomas 
685 3efd8e31 2022-10-23 thomas 	if (strchr(name, '\n') != NULL) {
686 3efd8e31 2022-10-23 thomas 		fatalx("%s: repository names must not contain linefeeds: %s",
687 3efd8e31 2022-10-23 thomas 		    getprogname(), name);
688 3efd8e31 2022-10-23 thomas 	}
689 3efd8e31 2022-10-23 thomas 
690 3efd8e31 2022-10-23 thomas 	repo = calloc(1, sizeof(*repo));
691 3efd8e31 2022-10-23 thomas 	if (repo == NULL)
692 3efd8e31 2022-10-23 thomas 		fatalx("%s: calloc", __func__);
693 3efd8e31 2022-10-23 thomas 
694 729a7e24 2022-11-17 thomas 	STAILQ_INIT(&repo->rules);
695 729a7e24 2022-11-17 thomas 
696 3efd8e31 2022-10-23 thomas 	if (strlcpy(repo->name, name, sizeof(repo->name)) >=
697 3efd8e31 2022-10-23 thomas 	    sizeof(repo->name))
698 3efd8e31 2022-10-23 thomas 		fatalx("%s: strlcpy", __func__);
699 3efd8e31 2022-10-23 thomas 
700 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&gotd->repos, repo, entry);
701 3efd8e31 2022-10-23 thomas 	gotd->nrepos++;
702 3efd8e31 2022-10-23 thomas 
703 3efd8e31 2022-10-23 thomas 	return repo;
704 3efd8e31 2022-10-23 thomas };
705 729a7e24 2022-11-17 thomas 
706 729a7e24 2022-11-17 thomas static void
707 729a7e24 2022-11-17 thomas conf_new_access_rule(struct gotd_repo *repo, enum gotd_access access,
708 729a7e24 2022-11-17 thomas     int authorization, char *identifier)
709 729a7e24 2022-11-17 thomas {
710 729a7e24 2022-11-17 thomas 	struct gotd_access_rule *rule;
711 729a7e24 2022-11-17 thomas 
712 729a7e24 2022-11-17 thomas 	rule = calloc(1, sizeof(*rule));
713 729a7e24 2022-11-17 thomas 	if (rule == NULL)
714 729a7e24 2022-11-17 thomas 		fatal("calloc");
715 3efd8e31 2022-10-23 thomas 
716 729a7e24 2022-11-17 thomas 	rule->access = access;
717 729a7e24 2022-11-17 thomas 	rule->authorization = authorization;
718 729a7e24 2022-11-17 thomas 	rule->identifier = identifier;
719 729a7e24 2022-11-17 thomas 
720 729a7e24 2022-11-17 thomas 	STAILQ_INSERT_TAIL(&repo->rules, rule, entry);
721 729a7e24 2022-11-17 thomas }
722 729a7e24 2022-11-17 thomas 
723 3efd8e31 2022-10-23 thomas int
724 3efd8e31 2022-10-23 thomas symset(const char *nam, const char *val, int persist)
725 3efd8e31 2022-10-23 thomas {
726 3efd8e31 2022-10-23 thomas 	struct sym *sym;
727 3efd8e31 2022-10-23 thomas 
728 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
729 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0)
730 3efd8e31 2022-10-23 thomas 			break;
731 3efd8e31 2022-10-23 thomas 	}
732 3efd8e31 2022-10-23 thomas 
733 3efd8e31 2022-10-23 thomas 	if (sym != NULL) {
734 3efd8e31 2022-10-23 thomas 		if (sym->persist == 1)
735 3efd8e31 2022-10-23 thomas 			return (0);
736 3efd8e31 2022-10-23 thomas 		else {
737 3efd8e31 2022-10-23 thomas 			free(sym->nam);
738 3efd8e31 2022-10-23 thomas 			free(sym->val);
739 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
740 3efd8e31 2022-10-23 thomas 			free(sym);
741 3efd8e31 2022-10-23 thomas 		}
742 3efd8e31 2022-10-23 thomas 	}
743 3efd8e31 2022-10-23 thomas 	sym = calloc(1, sizeof(*sym));
744 3efd8e31 2022-10-23 thomas 	if (sym == NULL)
745 3efd8e31 2022-10-23 thomas 		return (-1);
746 3efd8e31 2022-10-23 thomas 
747 3efd8e31 2022-10-23 thomas 	sym->nam = strdup(nam);
748 3efd8e31 2022-10-23 thomas 	if (sym->nam == NULL) {
749 3efd8e31 2022-10-23 thomas 		free(sym);
750 3efd8e31 2022-10-23 thomas 		return (-1);
751 3efd8e31 2022-10-23 thomas 	}
752 3efd8e31 2022-10-23 thomas 	sym->val = strdup(val);
753 3efd8e31 2022-10-23 thomas 	if (sym->val == NULL) {
754 3efd8e31 2022-10-23 thomas 		free(sym->nam);
755 3efd8e31 2022-10-23 thomas 		free(sym);
756 3efd8e31 2022-10-23 thomas 		return (-1);
757 3efd8e31 2022-10-23 thomas 	}
758 3efd8e31 2022-10-23 thomas 	sym->used = 0;
759 3efd8e31 2022-10-23 thomas 	sym->persist = persist;
760 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
761 3efd8e31 2022-10-23 thomas 	return (0);
762 3efd8e31 2022-10-23 thomas }
763 3efd8e31 2022-10-23 thomas 
764 3efd8e31 2022-10-23 thomas char *
765 3efd8e31 2022-10-23 thomas symget(const char *nam)
766 3efd8e31 2022-10-23 thomas {
767 3efd8e31 2022-10-23 thomas 	struct sym *sym;
768 3efd8e31 2022-10-23 thomas 
769 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
770 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0) {
771 3efd8e31 2022-10-23 thomas 			sym->used = 1;
772 3efd8e31 2022-10-23 thomas 			return (sym->val);
773 3efd8e31 2022-10-23 thomas 		}
774 3efd8e31 2022-10-23 thomas 	}
775 3efd8e31 2022-10-23 thomas 	return (NULL);
776 3efd8e31 2022-10-23 thomas }