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 c3841c67 2022-11-18 thomas static void			 conf_new_access_rule(struct gotd_repo *,
 90 c3841c67 2022-11-18 thomas 				    enum gotd_access, int, char *);
 91 3efd8e31 2022-10-23 thomas static enum gotd_procid		 gotd_proc_id;
 92 3efd8e31 2022-10-23 thomas 
 93 3efd8e31 2022-10-23 thomas typedef struct {
 94 3efd8e31 2022-10-23 thomas 	union {
 95 3efd8e31 2022-10-23 thomas 		long long	 number;
 96 3efd8e31 2022-10-23 thomas 		char		*string;
 97 3efd8e31 2022-10-23 thomas 	} v;
 98 3efd8e31 2022-10-23 thomas 	int lineno;
 99 3efd8e31 2022-10-23 thomas } YYSTYPE;
100 3efd8e31 2022-10-23 thomas 
101 3efd8e31 2022-10-23 thomas %}
102 3efd8e31 2022-10-23 thomas 
103 729a7e24 2022-11-17 thomas %token	PATH ERROR ON UNIX_SOCKET UNIX_GROUP USER REPOSITORY PERMIT DENY
104 da9a9ea8 2022-11-17 thomas %token	RO RW
105 3efd8e31 2022-10-23 thomas 
106 3efd8e31 2022-10-23 thomas %token	<v.string>	STRING
107 3efd8e31 2022-10-23 thomas %token	<v.number>	NUMBER
108 3efd8e31 2022-10-23 thomas %type	<v.number>	boolean
109 3efd8e31 2022-10-23 thomas 
110 3efd8e31 2022-10-23 thomas %%
111 3efd8e31 2022-10-23 thomas 
112 3efd8e31 2022-10-23 thomas grammar		:
113 3efd8e31 2022-10-23 thomas 		| grammar '\n'
114 3efd8e31 2022-10-23 thomas 		| grammar main '\n'
115 3efd8e31 2022-10-23 thomas 		| grammar repository '\n'
116 3efd8e31 2022-10-23 thomas 		;
117 3efd8e31 2022-10-23 thomas 
118 3efd8e31 2022-10-23 thomas boolean		: STRING {
119 3efd8e31 2022-10-23 thomas 			if (strcasecmp($1, "1") == 0 ||
120 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "yes") == 0 ||
121 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "on") == 0)
122 3efd8e31 2022-10-23 thomas 				$$ = 1;
123 3efd8e31 2022-10-23 thomas 			else if (strcasecmp($1, "0") == 0 ||
124 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "off") == 0 ||
125 3efd8e31 2022-10-23 thomas 			    strcasecmp($1, "no") == 0)
126 3efd8e31 2022-10-23 thomas 				$$ = 0;
127 3efd8e31 2022-10-23 thomas 			else {
128 3efd8e31 2022-10-23 thomas 				yyerror("invalid boolean value '%s'", $1);
129 3efd8e31 2022-10-23 thomas 				free($1);
130 3efd8e31 2022-10-23 thomas 				YYERROR;
131 3efd8e31 2022-10-23 thomas 			}
132 3efd8e31 2022-10-23 thomas 			free($1);
133 3efd8e31 2022-10-23 thomas 		}
134 3efd8e31 2022-10-23 thomas 		| ON { $$ = 1; }
135 3efd8e31 2022-10-23 thomas 		| NUMBER { $$ = $1; }
136 3efd8e31 2022-10-23 thomas 		;
137 3efd8e31 2022-10-23 thomas 
138 3efd8e31 2022-10-23 thomas main		: UNIX_SOCKET STRING {
139 2b3d32a1 2022-12-30 thomas 			if (gotd_proc_id == PROC_LISTEN) {
140 3efd8e31 2022-10-23 thomas 				if (strlcpy(gotd->unix_socket_path, $2,
141 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) >=
142 3efd8e31 2022-10-23 thomas 				    sizeof(gotd->unix_socket_path)) {
143 3efd8e31 2022-10-23 thomas 					yyerror("%s: unix socket path too long",
144 3efd8e31 2022-10-23 thomas 					    __func__);
145 3efd8e31 2022-10-23 thomas 					free($2);
146 3efd8e31 2022-10-23 thomas 					YYERROR;
147 3efd8e31 2022-10-23 thomas 				}
148 3efd8e31 2022-10-23 thomas 			}
149 3efd8e31 2022-10-23 thomas 			free($2);
150 3efd8e31 2022-10-23 thomas 		}
151 3efd8e31 2022-10-23 thomas 		| UNIX_GROUP STRING {
152 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->unix_group_name, $2,
153 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) >=
154 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->unix_group_name)) {
155 3efd8e31 2022-10-23 thomas 				yyerror("%s: unix group name too long",
156 3efd8e31 2022-10-23 thomas 				    __func__);
157 3efd8e31 2022-10-23 thomas 				free($2);
158 3efd8e31 2022-10-23 thomas 				YYERROR;
159 3efd8e31 2022-10-23 thomas 			}
160 3efd8e31 2022-10-23 thomas 			free($2);
161 3efd8e31 2022-10-23 thomas 		}
162 3efd8e31 2022-10-23 thomas 		| USER STRING {
163 3efd8e31 2022-10-23 thomas 			if (strlcpy(gotd->user_name, $2,
164 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) >=
165 3efd8e31 2022-10-23 thomas 			    sizeof(gotd->user_name)) {
166 3efd8e31 2022-10-23 thomas 				yyerror("%s: user name too long", __func__);
167 3efd8e31 2022-10-23 thomas 				free($2);
168 3efd8e31 2022-10-23 thomas 				YYERROR;
169 3efd8e31 2022-10-23 thomas 			}
170 3efd8e31 2022-10-23 thomas 			free($2);
171 3efd8e31 2022-10-23 thomas 		}
172 3efd8e31 2022-10-23 thomas 		;
173 3efd8e31 2022-10-23 thomas 
174 3efd8e31 2022-10-23 thomas repository	: REPOSITORY STRING {
175 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
176 3efd8e31 2022-10-23 thomas 
177 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
178 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
179 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
180 3efd8e31 2022-10-23 thomas 					free($2);
181 3efd8e31 2022-10-23 thomas 					YYERROR;
182 3efd8e31 2022-10-23 thomas 				}
183 3efd8e31 2022-10-23 thomas 			}
184 3efd8e31 2022-10-23 thomas 
185 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
186 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
187 3efd8e31 2022-10-23 thomas 			}
188 3efd8e31 2022-10-23 thomas 			free($2);
189 3efd8e31 2022-10-23 thomas 		}
190 3efd8e31 2022-10-23 thomas 		| REPOSITORY STRING {
191 3efd8e31 2022-10-23 thomas 			struct gotd_repo *repo;
192 3efd8e31 2022-10-23 thomas 
193 3efd8e31 2022-10-23 thomas 			TAILQ_FOREACH(repo, &gotd->repos, entry) {
194 3efd8e31 2022-10-23 thomas 				if (strcmp(repo->name, $2) == 0) {
195 3efd8e31 2022-10-23 thomas 					yyerror("duplicate repository '%s'", $2);
196 3efd8e31 2022-10-23 thomas 					free($2);
197 3efd8e31 2022-10-23 thomas 					YYERROR;
198 3efd8e31 2022-10-23 thomas 				}
199 3efd8e31 2022-10-23 thomas 			}
200 3efd8e31 2022-10-23 thomas 
201 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
202 3efd8e31 2022-10-23 thomas 				new_repo = conf_new_repo($2);
203 3efd8e31 2022-10-23 thomas 			}
204 3efd8e31 2022-10-23 thomas 			free($2);
205 3efd8e31 2022-10-23 thomas 		} '{' optnl repoopts2 '}' {
206 3efd8e31 2022-10-23 thomas 		}
207 3efd8e31 2022-10-23 thomas 		;
208 3efd8e31 2022-10-23 thomas 
209 3efd8e31 2022-10-23 thomas repoopts1	: PATH STRING {
210 3efd8e31 2022-10-23 thomas 			if (gotd_proc_id == PROC_GOTD) {
211 3efd8e31 2022-10-23 thomas 				if (!got_path_is_absolute($2)) {
212 3efd8e31 2022-10-23 thomas 					yyerror("%s: path %s is not absolute",
213 3efd8e31 2022-10-23 thomas 					    __func__, $2);
214 3efd8e31 2022-10-23 thomas 					free($2);
215 3efd8e31 2022-10-23 thomas 					YYERROR;
216 3efd8e31 2022-10-23 thomas 				}
217 3efd8e31 2022-10-23 thomas 				if (strlcpy(new_repo->path, $2,
218 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) >=
219 3efd8e31 2022-10-23 thomas 				    sizeof(new_repo->path)) {
220 3efd8e31 2022-10-23 thomas 					yyerror("%s: path truncated", __func__);
221 3efd8e31 2022-10-23 thomas 					free($2);
222 3efd8e31 2022-10-23 thomas 					YYERROR;
223 3efd8e31 2022-10-23 thomas 				}
224 3efd8e31 2022-10-23 thomas 			}
225 3efd8e31 2022-10-23 thomas 			free($2);
226 729a7e24 2022-11-17 thomas 		}
227 729a7e24 2022-11-17 thomas 		| PERMIT RO STRING {
228 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
229 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
230 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED, GOTD_AUTH_READ, $3);
231 729a7e24 2022-11-17 thomas 			}
232 729a7e24 2022-11-17 thomas 		}
233 729a7e24 2022-11-17 thomas 		| PERMIT RW STRING {
234 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
235 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
236 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_PERMITTED,
237 729a7e24 2022-11-17 thomas 				    GOTD_AUTH_READ | GOTD_AUTH_WRITE, $3);
238 729a7e24 2022-11-17 thomas 			}
239 3efd8e31 2022-10-23 thomas 		}
240 729a7e24 2022-11-17 thomas 		| DENY STRING {
241 729a7e24 2022-11-17 thomas 			if (gotd_proc_id == PROC_GOTD) {
242 729a7e24 2022-11-17 thomas 				conf_new_access_rule(new_repo,
243 729a7e24 2022-11-17 thomas 				    GOTD_ACCESS_DENIED, 0, $2);
244 729a7e24 2022-11-17 thomas 			}
245 729a7e24 2022-11-17 thomas 		}
246 3efd8e31 2022-10-23 thomas 		;
247 3efd8e31 2022-10-23 thomas 
248 3efd8e31 2022-10-23 thomas repoopts2	: repoopts2 repoopts1 nl
249 3efd8e31 2022-10-23 thomas 		| repoopts1 optnl
250 3efd8e31 2022-10-23 thomas 		;
251 3efd8e31 2022-10-23 thomas 
252 3efd8e31 2022-10-23 thomas nl		: '\n' optnl
253 3efd8e31 2022-10-23 thomas 		;
254 3efd8e31 2022-10-23 thomas 
255 3efd8e31 2022-10-23 thomas optnl		: '\n' optnl		/* zero or more newlines */
256 3efd8e31 2022-10-23 thomas 		| /* empty */
257 3efd8e31 2022-10-23 thomas 		;
258 3efd8e31 2022-10-23 thomas 
259 3efd8e31 2022-10-23 thomas %%
260 3efd8e31 2022-10-23 thomas 
261 3efd8e31 2022-10-23 thomas struct keywords {
262 3efd8e31 2022-10-23 thomas 	const char	*k_name;
263 3efd8e31 2022-10-23 thomas 	int		 k_val;
264 3efd8e31 2022-10-23 thomas };
265 3efd8e31 2022-10-23 thomas 
266 3efd8e31 2022-10-23 thomas int
267 3efd8e31 2022-10-23 thomas yyerror(const char *fmt, ...)
268 3efd8e31 2022-10-23 thomas {
269 3efd8e31 2022-10-23 thomas 	va_list ap;
270 3efd8e31 2022-10-23 thomas 	char *msg;
271 3efd8e31 2022-10-23 thomas 
272 3efd8e31 2022-10-23 thomas 	file->errors++;
273 3efd8e31 2022-10-23 thomas 	va_start(ap, fmt);
274 3efd8e31 2022-10-23 thomas 	if (vasprintf(&msg, fmt, ap) == -1)
275 3efd8e31 2022-10-23 thomas 		fatalx("yyerror vasprintf");
276 3efd8e31 2022-10-23 thomas 	va_end(ap);
277 3efd8e31 2022-10-23 thomas 	logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
278 3efd8e31 2022-10-23 thomas 	free(msg);
279 3efd8e31 2022-10-23 thomas 	return (0);
280 3efd8e31 2022-10-23 thomas }
281 3efd8e31 2022-10-23 thomas 
282 3efd8e31 2022-10-23 thomas int
283 3efd8e31 2022-10-23 thomas kw_cmp(const void *k, const void *e)
284 3efd8e31 2022-10-23 thomas {
285 3efd8e31 2022-10-23 thomas 	return (strcmp(k, ((const struct keywords *)e)->k_name));
286 3efd8e31 2022-10-23 thomas }
287 3efd8e31 2022-10-23 thomas 
288 3efd8e31 2022-10-23 thomas int
289 3efd8e31 2022-10-23 thomas lookup(char *s)
290 3efd8e31 2022-10-23 thomas {
291 3efd8e31 2022-10-23 thomas 	/* This has to be sorted always. */
292 3efd8e31 2022-10-23 thomas 	static const struct keywords keywords[] = {
293 729a7e24 2022-11-17 thomas 		{ "deny",			DENY },
294 3efd8e31 2022-10-23 thomas 		{ "on",				ON },
295 3efd8e31 2022-10-23 thomas 		{ "path",			PATH },
296 729a7e24 2022-11-17 thomas 		{ "permit",			PERMIT },
297 3efd8e31 2022-10-23 thomas 		{ "repository",			REPOSITORY },
298 729a7e24 2022-11-17 thomas 		{ "ro",				RO },
299 729a7e24 2022-11-17 thomas 		{ "rw",				RW },
300 3efd8e31 2022-10-23 thomas 		{ "unix_group",			UNIX_GROUP },
301 3efd8e31 2022-10-23 thomas 		{ "unix_socket",		UNIX_SOCKET },
302 3efd8e31 2022-10-23 thomas 		{ "user",			USER },
303 3efd8e31 2022-10-23 thomas 	};
304 3efd8e31 2022-10-23 thomas 	const struct keywords *p;
305 3efd8e31 2022-10-23 thomas 
306 3efd8e31 2022-10-23 thomas 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
307 3efd8e31 2022-10-23 thomas 	    sizeof(keywords[0]), kw_cmp);
308 3efd8e31 2022-10-23 thomas 
309 3efd8e31 2022-10-23 thomas 	if (p)
310 3efd8e31 2022-10-23 thomas 		return (p->k_val);
311 3efd8e31 2022-10-23 thomas 	else
312 3efd8e31 2022-10-23 thomas 		return (STRING);
313 3efd8e31 2022-10-23 thomas }
314 3efd8e31 2022-10-23 thomas 
315 3efd8e31 2022-10-23 thomas #define MAXPUSHBACK	128
316 3efd8e31 2022-10-23 thomas 
317 3efd8e31 2022-10-23 thomas unsigned char *parsebuf;
318 3efd8e31 2022-10-23 thomas int parseindex;
319 3efd8e31 2022-10-23 thomas unsigned char pushback_buffer[MAXPUSHBACK];
320 3efd8e31 2022-10-23 thomas int pushback_index = 0;
321 3efd8e31 2022-10-23 thomas 
322 3efd8e31 2022-10-23 thomas int
323 3efd8e31 2022-10-23 thomas lgetc(int quotec)
324 3efd8e31 2022-10-23 thomas {
325 3efd8e31 2022-10-23 thomas 	int c, next;
326 3efd8e31 2022-10-23 thomas 
327 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
328 3efd8e31 2022-10-23 thomas 		/* Read character from the parsebuffer instead of input. */
329 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0) {
330 3efd8e31 2022-10-23 thomas 			c = parsebuf[parseindex++];
331 3efd8e31 2022-10-23 thomas 			if (c != '\0')
332 3efd8e31 2022-10-23 thomas 				return (c);
333 3efd8e31 2022-10-23 thomas 			parsebuf = NULL;
334 3efd8e31 2022-10-23 thomas 		} else
335 3efd8e31 2022-10-23 thomas 			parseindex++;
336 3efd8e31 2022-10-23 thomas 	}
337 3efd8e31 2022-10-23 thomas 
338 3efd8e31 2022-10-23 thomas 	if (pushback_index)
339 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[--pushback_index]);
340 3efd8e31 2022-10-23 thomas 
341 3efd8e31 2022-10-23 thomas 	if (quotec) {
342 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
343 3efd8e31 2022-10-23 thomas 		if (c == EOF)
344 3efd8e31 2022-10-23 thomas 			yyerror("reached end of file while parsing "
345 3efd8e31 2022-10-23 thomas 			    "quoted string");
346 3efd8e31 2022-10-23 thomas 		return (c);
347 3efd8e31 2022-10-23 thomas 	}
348 3efd8e31 2022-10-23 thomas 
349 3efd8e31 2022-10-23 thomas 	c = getc(file->stream);
350 3efd8e31 2022-10-23 thomas 	while (c == '\\') {
351 3efd8e31 2022-10-23 thomas 		next = getc(file->stream);
352 3efd8e31 2022-10-23 thomas 		if (next != '\n') {
353 3efd8e31 2022-10-23 thomas 			c = next;
354 3efd8e31 2022-10-23 thomas 			break;
355 3efd8e31 2022-10-23 thomas 		}
356 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
357 3efd8e31 2022-10-23 thomas 		file->lineno++;
358 3efd8e31 2022-10-23 thomas 		c = getc(file->stream);
359 3efd8e31 2022-10-23 thomas 	}
360 3efd8e31 2022-10-23 thomas 
361 3efd8e31 2022-10-23 thomas 	return (c);
362 3efd8e31 2022-10-23 thomas }
363 3efd8e31 2022-10-23 thomas 
364 3efd8e31 2022-10-23 thomas int
365 3efd8e31 2022-10-23 thomas lungetc(int c)
366 3efd8e31 2022-10-23 thomas {
367 3efd8e31 2022-10-23 thomas 	if (c == EOF)
368 3efd8e31 2022-10-23 thomas 		return (EOF);
369 3efd8e31 2022-10-23 thomas 	if (parsebuf) {
370 3efd8e31 2022-10-23 thomas 		parseindex--;
371 3efd8e31 2022-10-23 thomas 		if (parseindex >= 0)
372 3efd8e31 2022-10-23 thomas 			return (c);
373 3efd8e31 2022-10-23 thomas 	}
374 3efd8e31 2022-10-23 thomas 	if (pushback_index < MAXPUSHBACK-1)
375 3efd8e31 2022-10-23 thomas 		return (pushback_buffer[pushback_index++] = c);
376 3efd8e31 2022-10-23 thomas 	else
377 3efd8e31 2022-10-23 thomas 		return (EOF);
378 3efd8e31 2022-10-23 thomas }
379 3efd8e31 2022-10-23 thomas 
380 3efd8e31 2022-10-23 thomas int
381 3efd8e31 2022-10-23 thomas findeol(void)
382 3efd8e31 2022-10-23 thomas {
383 3efd8e31 2022-10-23 thomas 	int c;
384 3efd8e31 2022-10-23 thomas 
385 3efd8e31 2022-10-23 thomas 	parsebuf = NULL;
386 3efd8e31 2022-10-23 thomas 
387 3efd8e31 2022-10-23 thomas 	/* Skip to either EOF or the first real EOL. */
388 3efd8e31 2022-10-23 thomas 	while (1) {
389 3efd8e31 2022-10-23 thomas 		if (pushback_index)
390 3efd8e31 2022-10-23 thomas 			c = pushback_buffer[--pushback_index];
391 3efd8e31 2022-10-23 thomas 		else
392 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
393 3efd8e31 2022-10-23 thomas 		if (c == '\n') {
394 3efd8e31 2022-10-23 thomas 			file->lineno++;
395 3efd8e31 2022-10-23 thomas 			break;
396 3efd8e31 2022-10-23 thomas 		}
397 3efd8e31 2022-10-23 thomas 		if (c == EOF)
398 3efd8e31 2022-10-23 thomas 			break;
399 3efd8e31 2022-10-23 thomas 	}
400 3efd8e31 2022-10-23 thomas 	return (ERROR);
401 3efd8e31 2022-10-23 thomas }
402 3efd8e31 2022-10-23 thomas 
403 3efd8e31 2022-10-23 thomas int
404 3efd8e31 2022-10-23 thomas yylex(void)
405 3efd8e31 2022-10-23 thomas {
406 3efd8e31 2022-10-23 thomas 	unsigned char buf[8096];
407 3efd8e31 2022-10-23 thomas 	unsigned char *p, *val;
408 3efd8e31 2022-10-23 thomas 	int quotec, next, c;
409 3efd8e31 2022-10-23 thomas 	int token;
410 3efd8e31 2022-10-23 thomas 
411 3efd8e31 2022-10-23 thomas top:
412 3efd8e31 2022-10-23 thomas 	p = buf;
413 3efd8e31 2022-10-23 thomas 	c = lgetc(0);
414 3efd8e31 2022-10-23 thomas 	while (c == ' ' || c == '\t')
415 3efd8e31 2022-10-23 thomas 		c = lgetc(0); /* nothing */
416 3efd8e31 2022-10-23 thomas 
417 3efd8e31 2022-10-23 thomas 	yylval.lineno = file->lineno;
418 3efd8e31 2022-10-23 thomas 	if (c == '#') {
419 3efd8e31 2022-10-23 thomas 		c = lgetc(0);
420 3efd8e31 2022-10-23 thomas 		while (c != '\n' && c != EOF)
421 3efd8e31 2022-10-23 thomas 			c = lgetc(0); /* nothing */
422 3efd8e31 2022-10-23 thomas 	}
423 3efd8e31 2022-10-23 thomas 	if (c == '$' && parsebuf == NULL) {
424 3efd8e31 2022-10-23 thomas 		while (1) {
425 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
426 3efd8e31 2022-10-23 thomas 			if (c == EOF)
427 3efd8e31 2022-10-23 thomas 				return (0);
428 3efd8e31 2022-10-23 thomas 
429 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
430 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
431 3efd8e31 2022-10-23 thomas 				return (findeol());
432 3efd8e31 2022-10-23 thomas 			}
433 3efd8e31 2022-10-23 thomas 			if (isalnum(c) || c == '_') {
434 3efd8e31 2022-10-23 thomas 				*p++ = c;
435 3efd8e31 2022-10-23 thomas 				continue;
436 3efd8e31 2022-10-23 thomas 			}
437 3efd8e31 2022-10-23 thomas 			*p = '\0';
438 3efd8e31 2022-10-23 thomas 			lungetc(c);
439 3efd8e31 2022-10-23 thomas 			break;
440 3efd8e31 2022-10-23 thomas 		}
441 3efd8e31 2022-10-23 thomas 		val = symget(buf);
442 3efd8e31 2022-10-23 thomas 		if (val == NULL) {
443 3efd8e31 2022-10-23 thomas 			yyerror("macro '%s' not defined", buf);
444 3efd8e31 2022-10-23 thomas 			return (findeol());
445 3efd8e31 2022-10-23 thomas 		}
446 3efd8e31 2022-10-23 thomas 		parsebuf = val;
447 3efd8e31 2022-10-23 thomas 		parseindex = 0;
448 3efd8e31 2022-10-23 thomas 		goto top;
449 3efd8e31 2022-10-23 thomas 	}
450 3efd8e31 2022-10-23 thomas 
451 3efd8e31 2022-10-23 thomas 	switch (c) {
452 3efd8e31 2022-10-23 thomas 	case '\'':
453 3efd8e31 2022-10-23 thomas 	case '"':
454 3efd8e31 2022-10-23 thomas 		quotec = c;
455 3efd8e31 2022-10-23 thomas 		while (1) {
456 3efd8e31 2022-10-23 thomas 			c = lgetc(quotec);
457 3efd8e31 2022-10-23 thomas 			if (c == EOF)
458 3efd8e31 2022-10-23 thomas 				return (0);
459 3efd8e31 2022-10-23 thomas 			if (c == '\n') {
460 3efd8e31 2022-10-23 thomas 				file->lineno++;
461 3efd8e31 2022-10-23 thomas 				continue;
462 3efd8e31 2022-10-23 thomas 			} else if (c == '\\') {
463 3efd8e31 2022-10-23 thomas 				next = lgetc(quotec);
464 3efd8e31 2022-10-23 thomas 				if (next == EOF)
465 3efd8e31 2022-10-23 thomas 					return (0);
466 3efd8e31 2022-10-23 thomas 				if (next == quotec || c == ' ' || c == '\t')
467 3efd8e31 2022-10-23 thomas 					c = next;
468 3efd8e31 2022-10-23 thomas 				else if (next == '\n') {
469 3efd8e31 2022-10-23 thomas 					file->lineno++;
470 3efd8e31 2022-10-23 thomas 					continue;
471 3efd8e31 2022-10-23 thomas 				} else
472 3efd8e31 2022-10-23 thomas 					lungetc(next);
473 3efd8e31 2022-10-23 thomas 			} else if (c == quotec) {
474 3efd8e31 2022-10-23 thomas 				*p = '\0';
475 3efd8e31 2022-10-23 thomas 				break;
476 3efd8e31 2022-10-23 thomas 			} else if (c == '\0') {
477 3efd8e31 2022-10-23 thomas 				yyerror("syntax error");
478 3efd8e31 2022-10-23 thomas 				return (findeol());
479 3efd8e31 2022-10-23 thomas 			}
480 3efd8e31 2022-10-23 thomas 			if (p + 1 >= buf + sizeof(buf) - 1) {
481 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
482 3efd8e31 2022-10-23 thomas 				return (findeol());
483 3efd8e31 2022-10-23 thomas 			}
484 3efd8e31 2022-10-23 thomas 			*p++ = c;
485 3efd8e31 2022-10-23 thomas 		}
486 3efd8e31 2022-10-23 thomas 		yylval.v.string = strdup(buf);
487 3efd8e31 2022-10-23 thomas 		if (yylval.v.string == NULL)
488 3efd8e31 2022-10-23 thomas 			err(1, "yylex: strdup");
489 3efd8e31 2022-10-23 thomas 		return (STRING);
490 3efd8e31 2022-10-23 thomas 	}
491 3efd8e31 2022-10-23 thomas 
492 3efd8e31 2022-10-23 thomas #define allowed_to_end_number(x) \
493 3efd8e31 2022-10-23 thomas 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
494 3efd8e31 2022-10-23 thomas 
495 3efd8e31 2022-10-23 thomas 	if (c == '-' || isdigit(c)) {
496 3efd8e31 2022-10-23 thomas 		do {
497 3efd8e31 2022-10-23 thomas 			*p++ = c;
498 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
499 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
500 3efd8e31 2022-10-23 thomas 				return (findeol());
501 3efd8e31 2022-10-23 thomas 			}
502 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
503 3efd8e31 2022-10-23 thomas 		} while (c != EOF && isdigit(c));
504 3efd8e31 2022-10-23 thomas 		lungetc(c);
505 3efd8e31 2022-10-23 thomas 		if (p == buf + 1 && buf[0] == '-')
506 3efd8e31 2022-10-23 thomas 			goto nodigits;
507 3efd8e31 2022-10-23 thomas 		if (c == EOF || allowed_to_end_number(c)) {
508 3efd8e31 2022-10-23 thomas 			const char *errstr = NULL;
509 3efd8e31 2022-10-23 thomas 
510 3efd8e31 2022-10-23 thomas 			*p = '\0';
511 3efd8e31 2022-10-23 thomas 			yylval.v.number = strtonum(buf, LLONG_MIN,
512 3efd8e31 2022-10-23 thomas 			    LLONG_MAX, &errstr);
513 3efd8e31 2022-10-23 thomas 			if (errstr) {
514 3efd8e31 2022-10-23 thomas 				yyerror("\"%s\" invalid number: %s",
515 3efd8e31 2022-10-23 thomas 				    buf, errstr);
516 3efd8e31 2022-10-23 thomas 				return (findeol());
517 3efd8e31 2022-10-23 thomas 			}
518 3efd8e31 2022-10-23 thomas 			return (NUMBER);
519 3efd8e31 2022-10-23 thomas 		} else {
520 3efd8e31 2022-10-23 thomas nodigits:
521 3efd8e31 2022-10-23 thomas 			while (p > buf + 1)
522 3efd8e31 2022-10-23 thomas 				lungetc(*--p);
523 3efd8e31 2022-10-23 thomas 			c = *--p;
524 3efd8e31 2022-10-23 thomas 			if (c == '-')
525 3efd8e31 2022-10-23 thomas 				return (c);
526 3efd8e31 2022-10-23 thomas 		}
527 3efd8e31 2022-10-23 thomas 	}
528 3efd8e31 2022-10-23 thomas 
529 3efd8e31 2022-10-23 thomas #define allowed_in_string(x) \
530 3efd8e31 2022-10-23 thomas 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
531 3efd8e31 2022-10-23 thomas 	x != '{' && x != '}' && \
532 3efd8e31 2022-10-23 thomas 	x != '!' && x != '=' && x != '#' && \
533 3efd8e31 2022-10-23 thomas 	x != ','))
534 3efd8e31 2022-10-23 thomas 
535 3efd8e31 2022-10-23 thomas 	if (isalnum(c) || c == ':' || c == '_') {
536 3efd8e31 2022-10-23 thomas 		do {
537 3efd8e31 2022-10-23 thomas 			*p++ = c;
538 3efd8e31 2022-10-23 thomas 			if ((unsigned)(p-buf) >= sizeof(buf)) {
539 3efd8e31 2022-10-23 thomas 				yyerror("string too long");
540 3efd8e31 2022-10-23 thomas 				return (findeol());
541 3efd8e31 2022-10-23 thomas 			}
542 3efd8e31 2022-10-23 thomas 			c = lgetc(0);
543 3efd8e31 2022-10-23 thomas 		} while (c != EOF && (allowed_in_string(c)));
544 3efd8e31 2022-10-23 thomas 		lungetc(c);
545 3efd8e31 2022-10-23 thomas 		*p = '\0';
546 3efd8e31 2022-10-23 thomas 		token = lookup(buf);
547 3efd8e31 2022-10-23 thomas 		if (token == STRING) {
548 3efd8e31 2022-10-23 thomas 			yylval.v.string = strdup(buf);
549 3efd8e31 2022-10-23 thomas 			if (yylval.v.string == NULL)
550 3efd8e31 2022-10-23 thomas 				err(1, "yylex: strdup");
551 3efd8e31 2022-10-23 thomas 		}
552 3efd8e31 2022-10-23 thomas 		return (token);
553 3efd8e31 2022-10-23 thomas 	}
554 3efd8e31 2022-10-23 thomas 	if (c == '\n') {
555 3efd8e31 2022-10-23 thomas 		yylval.lineno = file->lineno;
556 3efd8e31 2022-10-23 thomas 		file->lineno++;
557 3efd8e31 2022-10-23 thomas 	}
558 3efd8e31 2022-10-23 thomas 	if (c == EOF)
559 3efd8e31 2022-10-23 thomas 		return (0);
560 3efd8e31 2022-10-23 thomas 	return (c);
561 3efd8e31 2022-10-23 thomas }
562 3efd8e31 2022-10-23 thomas 
563 3efd8e31 2022-10-23 thomas int
564 3efd8e31 2022-10-23 thomas check_file_secrecy(int fd, const char *fname)
565 3efd8e31 2022-10-23 thomas {
566 3efd8e31 2022-10-23 thomas 	struct stat st;
567 3efd8e31 2022-10-23 thomas 
568 3efd8e31 2022-10-23 thomas 	if (fstat(fd, &st)) {
569 3efd8e31 2022-10-23 thomas 		log_warn("cannot stat %s", fname);
570 3efd8e31 2022-10-23 thomas 		return (-1);
571 3efd8e31 2022-10-23 thomas 	}
572 3efd8e31 2022-10-23 thomas 	if (st.st_uid != 0 && st.st_uid != getuid()) {
573 3efd8e31 2022-10-23 thomas 		log_warnx("%s: owner not root or current user", fname);
574 3efd8e31 2022-10-23 thomas 		return (-1);
575 3efd8e31 2022-10-23 thomas 	}
576 3efd8e31 2022-10-23 thomas 	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
577 3efd8e31 2022-10-23 thomas 		log_warnx("%s: group writable or world read/writable", fname);
578 3efd8e31 2022-10-23 thomas 		return (-1);
579 3efd8e31 2022-10-23 thomas 	}
580 3efd8e31 2022-10-23 thomas 	return (0);
581 3efd8e31 2022-10-23 thomas }
582 3efd8e31 2022-10-23 thomas 
583 3efd8e31 2022-10-23 thomas struct file *
584 3efd8e31 2022-10-23 thomas newfile(const char *name, int secret)
585 3efd8e31 2022-10-23 thomas {
586 3efd8e31 2022-10-23 thomas 	struct file *nfile;
587 3efd8e31 2022-10-23 thomas 
588 3efd8e31 2022-10-23 thomas 	nfile = calloc(1, sizeof(struct file));
589 3efd8e31 2022-10-23 thomas 	if (nfile == NULL) {
590 3efd8e31 2022-10-23 thomas 		log_warn("calloc");
591 3efd8e31 2022-10-23 thomas 		return (NULL);
592 3efd8e31 2022-10-23 thomas 	}
593 3efd8e31 2022-10-23 thomas 	nfile->name = strdup(name);
594 3efd8e31 2022-10-23 thomas 	if (nfile->name == NULL) {
595 3efd8e31 2022-10-23 thomas 		log_warn("strdup");
596 3efd8e31 2022-10-23 thomas 		free(nfile);
597 3efd8e31 2022-10-23 thomas 		return (NULL);
598 3efd8e31 2022-10-23 thomas 	}
599 3efd8e31 2022-10-23 thomas 	nfile->stream = fopen(nfile->name, "r");
600 3efd8e31 2022-10-23 thomas 	if (nfile->stream == NULL) {
601 3efd8e31 2022-10-23 thomas 		/* no warning, we don't require a conf file */
602 3efd8e31 2022-10-23 thomas 		free(nfile->name);
603 3efd8e31 2022-10-23 thomas 		free(nfile);
604 3efd8e31 2022-10-23 thomas 		return (NULL);
605 3efd8e31 2022-10-23 thomas 	} else if (secret &&
606 3efd8e31 2022-10-23 thomas 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
607 3efd8e31 2022-10-23 thomas 		fclose(nfile->stream);
608 3efd8e31 2022-10-23 thomas 		free(nfile->name);
609 3efd8e31 2022-10-23 thomas 		free(nfile);
610 3efd8e31 2022-10-23 thomas 		return (NULL);
611 3efd8e31 2022-10-23 thomas 	}
612 3efd8e31 2022-10-23 thomas 	nfile->lineno = 1;
613 3efd8e31 2022-10-23 thomas 	return (nfile);
614 3efd8e31 2022-10-23 thomas }
615 3efd8e31 2022-10-23 thomas 
616 3efd8e31 2022-10-23 thomas static void
617 3efd8e31 2022-10-23 thomas closefile(struct file *xfile)
618 3efd8e31 2022-10-23 thomas {
619 3efd8e31 2022-10-23 thomas 	fclose(xfile->stream);
620 3efd8e31 2022-10-23 thomas 	free(xfile->name);
621 3efd8e31 2022-10-23 thomas 	free(xfile);
622 3efd8e31 2022-10-23 thomas }
623 3efd8e31 2022-10-23 thomas 
624 3efd8e31 2022-10-23 thomas int
625 3efd8e31 2022-10-23 thomas parse_config(const char *filename, enum gotd_procid proc_id,
626 3efd8e31 2022-10-23 thomas     struct gotd *env)
627 3efd8e31 2022-10-23 thomas {
628 3efd8e31 2022-10-23 thomas 	struct sym *sym, *next;
629 3efd8e31 2022-10-23 thomas 
630 3efd8e31 2022-10-23 thomas 	memset(env, 0, sizeof(*env));
631 3efd8e31 2022-10-23 thomas 
632 3efd8e31 2022-10-23 thomas 	gotd = env;
633 3efd8e31 2022-10-23 thomas 	gotd_proc_id = proc_id;
634 3efd8e31 2022-10-23 thomas 	TAILQ_INIT(&gotd->repos);
635 3efd8e31 2022-10-23 thomas 
636 3efd8e31 2022-10-23 thomas 	/* Apply default values. */
637 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_socket_path, GOTD_UNIX_SOCKET,
638 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_socket_path)) >= sizeof(gotd->unix_socket_path)) {
639 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix socket path too long", __func__);
640 3efd8e31 2022-10-23 thomas 		return -1;
641 3efd8e31 2022-10-23 thomas 	}
642 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->unix_group_name, GOTD_UNIX_GROUP,
643 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->unix_group_name)) >= sizeof(gotd->unix_group_name)) {
644 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: unix group name too long", __func__);
645 3efd8e31 2022-10-23 thomas 		return -1;
646 3efd8e31 2022-10-23 thomas 	}
647 3efd8e31 2022-10-23 thomas 	if (strlcpy(gotd->user_name, GOTD_USER,
648 3efd8e31 2022-10-23 thomas 	    sizeof(gotd->user_name)) >= sizeof(gotd->user_name)) {
649 3efd8e31 2022-10-23 thomas 		fprintf(stderr, "%s: user name too long", __func__);
650 3efd8e31 2022-10-23 thomas 		return -1;
651 3efd8e31 2022-10-23 thomas 	}
652 3efd8e31 2022-10-23 thomas 
653 3efd8e31 2022-10-23 thomas 	file = newfile(filename, 0);
654 3efd8e31 2022-10-23 thomas 	if (file == NULL) {
655 3efd8e31 2022-10-23 thomas 		/* just return, as we don't require a conf file */
656 3efd8e31 2022-10-23 thomas 		return (0);
657 3efd8e31 2022-10-23 thomas 	}
658 3efd8e31 2022-10-23 thomas 
659 3efd8e31 2022-10-23 thomas 	yyparse();
660 3efd8e31 2022-10-23 thomas 	errors = file->errors;
661 3efd8e31 2022-10-23 thomas 	closefile(file);
662 3efd8e31 2022-10-23 thomas 
663 3efd8e31 2022-10-23 thomas 	/* Free macros and check which have not been used. */
664 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
665 3efd8e31 2022-10-23 thomas 		if ((gotd->verbosity > 1) && !sym->used)
666 3efd8e31 2022-10-23 thomas 			fprintf(stderr, "warning: macro '%s' not used\n",
667 3efd8e31 2022-10-23 thomas 			    sym->nam);
668 3efd8e31 2022-10-23 thomas 		if (!sym->persist) {
669 3efd8e31 2022-10-23 thomas 			free(sym->nam);
670 3efd8e31 2022-10-23 thomas 			free(sym->val);
671 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
672 3efd8e31 2022-10-23 thomas 			free(sym);
673 3efd8e31 2022-10-23 thomas 		}
674 3efd8e31 2022-10-23 thomas 	}
675 3efd8e31 2022-10-23 thomas 
676 3efd8e31 2022-10-23 thomas 	if (errors)
677 3efd8e31 2022-10-23 thomas 		return (-1);
678 3efd8e31 2022-10-23 thomas 
679 3efd8e31 2022-10-23 thomas 	return (0);
680 3efd8e31 2022-10-23 thomas }
681 3efd8e31 2022-10-23 thomas 
682 3efd8e31 2022-10-23 thomas static struct gotd_repo *
683 3efd8e31 2022-10-23 thomas conf_new_repo(const char *name)
684 3efd8e31 2022-10-23 thomas {
685 3efd8e31 2022-10-23 thomas 	struct gotd_repo *repo;
686 3efd8e31 2022-10-23 thomas 
687 3efd8e31 2022-10-23 thomas 	if (strchr(name, '\n') != NULL) {
688 3efd8e31 2022-10-23 thomas 		fatalx("%s: repository names must not contain linefeeds: %s",
689 3efd8e31 2022-10-23 thomas 		    getprogname(), name);
690 3efd8e31 2022-10-23 thomas 	}
691 3efd8e31 2022-10-23 thomas 
692 3efd8e31 2022-10-23 thomas 	repo = calloc(1, sizeof(*repo));
693 3efd8e31 2022-10-23 thomas 	if (repo == NULL)
694 3efd8e31 2022-10-23 thomas 		fatalx("%s: calloc", __func__);
695 3efd8e31 2022-10-23 thomas 
696 729a7e24 2022-11-17 thomas 	STAILQ_INIT(&repo->rules);
697 729a7e24 2022-11-17 thomas 
698 3efd8e31 2022-10-23 thomas 	if (strlcpy(repo->name, name, sizeof(repo->name)) >=
699 3efd8e31 2022-10-23 thomas 	    sizeof(repo->name))
700 3efd8e31 2022-10-23 thomas 		fatalx("%s: strlcpy", __func__);
701 3efd8e31 2022-10-23 thomas 
702 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&gotd->repos, repo, entry);
703 3efd8e31 2022-10-23 thomas 	gotd->nrepos++;
704 3efd8e31 2022-10-23 thomas 
705 3efd8e31 2022-10-23 thomas 	return repo;
706 3efd8e31 2022-10-23 thomas };
707 729a7e24 2022-11-17 thomas 
708 729a7e24 2022-11-17 thomas static void
709 729a7e24 2022-11-17 thomas conf_new_access_rule(struct gotd_repo *repo, enum gotd_access access,
710 729a7e24 2022-11-17 thomas     int authorization, char *identifier)
711 729a7e24 2022-11-17 thomas {
712 729a7e24 2022-11-17 thomas 	struct gotd_access_rule *rule;
713 729a7e24 2022-11-17 thomas 
714 729a7e24 2022-11-17 thomas 	rule = calloc(1, sizeof(*rule));
715 729a7e24 2022-11-17 thomas 	if (rule == NULL)
716 729a7e24 2022-11-17 thomas 		fatal("calloc");
717 3efd8e31 2022-10-23 thomas 
718 729a7e24 2022-11-17 thomas 	rule->access = access;
719 729a7e24 2022-11-17 thomas 	rule->authorization = authorization;
720 729a7e24 2022-11-17 thomas 	rule->identifier = identifier;
721 729a7e24 2022-11-17 thomas 
722 729a7e24 2022-11-17 thomas 	STAILQ_INSERT_TAIL(&repo->rules, rule, entry);
723 729a7e24 2022-11-17 thomas }
724 729a7e24 2022-11-17 thomas 
725 3efd8e31 2022-10-23 thomas int
726 3efd8e31 2022-10-23 thomas symset(const char *nam, const char *val, int persist)
727 3efd8e31 2022-10-23 thomas {
728 3efd8e31 2022-10-23 thomas 	struct sym *sym;
729 3efd8e31 2022-10-23 thomas 
730 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
731 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0)
732 3efd8e31 2022-10-23 thomas 			break;
733 3efd8e31 2022-10-23 thomas 	}
734 3efd8e31 2022-10-23 thomas 
735 3efd8e31 2022-10-23 thomas 	if (sym != NULL) {
736 3efd8e31 2022-10-23 thomas 		if (sym->persist == 1)
737 3efd8e31 2022-10-23 thomas 			return (0);
738 3efd8e31 2022-10-23 thomas 		else {
739 3efd8e31 2022-10-23 thomas 			free(sym->nam);
740 3efd8e31 2022-10-23 thomas 			free(sym->val);
741 3efd8e31 2022-10-23 thomas 			TAILQ_REMOVE(&symhead, sym, entry);
742 3efd8e31 2022-10-23 thomas 			free(sym);
743 3efd8e31 2022-10-23 thomas 		}
744 3efd8e31 2022-10-23 thomas 	}
745 3efd8e31 2022-10-23 thomas 	sym = calloc(1, sizeof(*sym));
746 3efd8e31 2022-10-23 thomas 	if (sym == NULL)
747 3efd8e31 2022-10-23 thomas 		return (-1);
748 3efd8e31 2022-10-23 thomas 
749 3efd8e31 2022-10-23 thomas 	sym->nam = strdup(nam);
750 3efd8e31 2022-10-23 thomas 	if (sym->nam == NULL) {
751 3efd8e31 2022-10-23 thomas 		free(sym);
752 3efd8e31 2022-10-23 thomas 		return (-1);
753 3efd8e31 2022-10-23 thomas 	}
754 3efd8e31 2022-10-23 thomas 	sym->val = strdup(val);
755 3efd8e31 2022-10-23 thomas 	if (sym->val == NULL) {
756 3efd8e31 2022-10-23 thomas 		free(sym->nam);
757 3efd8e31 2022-10-23 thomas 		free(sym);
758 3efd8e31 2022-10-23 thomas 		return (-1);
759 3efd8e31 2022-10-23 thomas 	}
760 3efd8e31 2022-10-23 thomas 	sym->used = 0;
761 3efd8e31 2022-10-23 thomas 	sym->persist = persist;
762 3efd8e31 2022-10-23 thomas 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
763 3efd8e31 2022-10-23 thomas 	return (0);
764 3efd8e31 2022-10-23 thomas }
765 3efd8e31 2022-10-23 thomas 
766 3efd8e31 2022-10-23 thomas char *
767 3efd8e31 2022-10-23 thomas symget(const char *nam)
768 3efd8e31 2022-10-23 thomas {
769 3efd8e31 2022-10-23 thomas 	struct sym *sym;
770 3efd8e31 2022-10-23 thomas 
771 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(sym, &symhead, entry) {
772 3efd8e31 2022-10-23 thomas 		if (strcmp(nam, sym->nam) == 0) {
773 3efd8e31 2022-10-23 thomas 			sym->used = 1;
774 3efd8e31 2022-10-23 thomas 			return (sym->val);
775 3efd8e31 2022-10-23 thomas 		}
776 3efd8e31 2022-10-23 thomas 	}
777 3efd8e31 2022-10-23 thomas 	return (NULL);
778 3efd8e31 2022-10-23 thomas }