1 /* $OpenBSD: parse.y,v 1.5 2015/07/19 22:09:08 benno Exp $ */
3 * Copyright (c) 2015 Ted Unangst <tedu@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/types.h>
40 #define YYSTYPE yystype
47 void yyerror(const char *, ...);
53 %token TPERMIT TDENY TAS TCMD
54 %token TNOPASS TKEEPENV
64 rule: action ident target cmd {
66 r = calloc(1, sizeof(*r));
68 errx(1, "can't allocate rule");
69 r->action = $1.action;
70 r->options = $1.options;
71 r->envlist = $1.envlist;
75 if (nrules == maxrules) {
80 if (!(rules = reallocarray(rules, maxrules,
82 errx(1, "can't allocate rules");
87 action: TPERMIT options {
89 $$.options = $2.options;
90 $$.envlist = $2.envlist;
97 $$.options = $1.options | $2.options;
98 $$.envlist = $1.envlist;
101 errx(1, "can't have two keepenv sections");
103 $$.envlist = $2.envlist;
109 $$.options = KEEPENV;
110 } | TKEEPENV '{' envlist '}' {
111 $$.options = KEEPENV;
112 $$.envlist = $3.envlist;
115 envlist: /* empty */ {
116 if (!($$.envlist = calloc(1, sizeof(char *))))
117 errx(1, "can't allocate envlist");
118 } | envlist TSTRING {
119 int nenv = arraylen($1.envlist);
120 if (!($$.envlist = reallocarray($1.envlist, nenv + 2,
122 errx(1, "can't allocate envlist");
123 $$.envlist[nenv] = $2.str;
124 $$.envlist[nenv + 1] = NULL;
132 target: /* optional */ {
138 cmd: /* optional */ {
147 yyerror(const char *fmt, ...)
160 { "permit", TPERMIT },
163 { "nopass", TNOPASS },
164 { "keepenv", TKEEPENV },
170 char buf[1024], *ebuf, *p, *str;
174 ebuf = buf + sizeof(buf);
180 goto repeat; /* skip spaces */
192 while ((c = getc(yyfp)) != '\n' && c != EOF)
193 ; /* skip comments */
213 yyerror("too much stuff");
220 for (i = 0; i < sizeof(keywords) / sizeof(keywords[0]); i++) {
221 if (strcmp(buf, keywords[i].word) == 0)
222 return keywords[i].token;
224 if ((str = strdup(buf)) == NULL)