1 /* -*- mode: fundamental; indent-tabs-mode: t; -*- */
5 * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
38 const char *config_path;
40 void yyerror(const char*, ...);
41 int parse_portno(const char*);
42 void parse_conf(const char*);
43 char *ensure_absolute_path(char*);
44 int check_block_code(int);
45 char *check_block_fmt(char*);
46 int check_strip_no(int);
51 /* %define parse.error verbose */
58 %token TIPV6 TPORT TPROTOCOLS TMIME TDEFAULT TTYPE
59 %token TCHROOT TUSER TSERVER
60 %token TLOCATION TCERT TKEY TROOT TCGI TLANG TINDEX TAUTO
61 %token TSTRIP TBLOCK TRETURN
70 conf : options vhosts ;
76 option : TIPV6 TBOOL { conf.ipv6 = $2; }
77 | TPORT TNUM { conf.port = $2; }
78 | TPROTOCOLS TSTRING {
79 if (tls_config_parse_protocols(&conf.protos, $2) == -1)
80 errx(1, "invalid protocols string \"%s\"", $2);
82 | TMIME TSTRING TSTRING { add_mime(&conf.mime, $2, $3); }
83 | TCHROOT TSTRING { conf.chroot = $2; }
84 | TUSER TSTRING { conf.user = $2; }
91 vhost : TSERVER TSTRING '{' servopts locations '}' {
92 host->locations[0].match = xstrdup("*");
95 if (strstr($2, "xn--") != NULL) {
96 warnx("%s:%d \"%s\" looks like punycode: "
97 "you should use the decoded hostname.",
98 config_path, yylineno, $2);
101 if (host->cert == NULL || host->key == NULL ||
103 errx(1, "invalid vhost definition: %s", $2);
105 if (++ihost == HOSTSLEN)
106 errx(1, "too much vhosts defined");
109 loc = &host->locations[0];
112 | error '}' { yyerror("error in server directive"); }
115 servopts : /* empty */
119 servopt : TCERT TSTRING { host->cert = ensure_absolute_path($2); }
120 | TKEY TSTRING { host->key = ensure_absolute_path($2); }
121 | TROOT TSTRING { host->dir = ensure_absolute_path($2); }
123 /* drop the starting '/', if any */
125 memmove($2, $2+1, strlen($2));
128 | TENTRYPOINT TSTRING {
129 if (host->entrypoint != NULL)
130 yyerror("`entrypoint' specified more than once");
132 memmove($2, $2+1, strlen($2));
133 host->entrypoint = $2;
138 locations : /* empty */
142 location : TLOCATION TSTRING '{' locopts '}' {
144 if (++iloc == LOCLEN)
145 errx(1, "too much location rules defined");
151 locopts : /* empty */
155 locopt : TDEFAULT TTYPE TSTRING {
156 if (loc->default_mime != NULL)
157 yyerror("`default type' specified more than once");
158 loc->default_mime = $3;
161 if (loc->lang != NULL)
162 yyerror("`lang' specified more than once");
166 if (loc->index != NULL)
167 yyerror("`index' specified more than once");
170 | TAUTO TINDEX TBOOL { loc->auto_index = $3 ? 1 : -1; }
171 | TBLOCK TRETURN TNUM TSTRING {
172 if (loc->block_fmt != NULL)
173 yyerror("`block' rule specified more than once");
174 loc->block_fmt = check_block_fmt($4);
175 loc->block_code = check_block_code($3);
177 | TBLOCK TRETURN TNUM {
178 if (loc->block_fmt != NULL)
179 yyerror("`block' rule specified more than once");
180 loc->block_fmt = xstrdup("temporary failure");
181 loc->block_code = check_block_code($3);
182 if ($3 >= 30 && $3 < 40)
183 yyerror("missing `meta' for block return %d", $3);
186 if (loc->block_fmt != NULL)
187 yyerror("`block' rule specified more than once");
188 loc->block_fmt = xstrdup("temporary failure");
189 loc->block_code = 40;
191 | TSTRIP TNUM { loc->strip = check_strip_no($2); }
197 yyerror(const char *msg, ...)
204 fprintf(stderr, "%s:%d: ", config_path, yylineno);
205 vfprintf(stderr, msg, ap);
210 parse_portno(const char *p)
215 n = strtonum(p, 0, UINT16_MAX, &errstr);
217 errx(1, "port number is %s: %s", errstr, p);
222 parse_conf(const char *path)
226 loc = &hosts[0].locations[0];
230 if ((yyin = fopen(path, "r")) == NULL)
231 fatal("cannot open config %s", path);
240 ensure_absolute_path(char *path)
242 if (path == NULL || *path != '/')
243 yyerror("not an absolute path");
248 check_block_code(int n)
250 if (n < 10 || n >= 70 || (n >= 20 && n <= 29))
251 yyerror("invalid block code %d", n);
256 check_block_fmt(char *fmt)
260 for (s = fmt; *s; ++s) {
271 yyerror("invalid format specifier %%%c", *s);
279 check_strip_no(int n)
282 yyerror("invalid strip number %d", n);