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