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root/svn/ircd-hybrid/trunk/src/conf_lexer.l
Revision: 1783
Committed: Thu Jan 24 19:26:51 2013 UTC (11 years, 2 months ago) by michael
File size: 15663 byte(s)
Log Message:
- Forward-port -r1774:
  - Configuration parser now does support 'year' and 'month' units
  - Add support for fake idle times to /whois. Known from csircd, this
    adds min_idle, and max_idle configuration directives to class{} blocks

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * conf_lexer.l: Scans the ircd configuration file for tokens.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 %option case-insensitive
26 %option noyywrap
27 %option nounput
28 %option never-interactive
29
30 %{
31 #include "stdinc.h"
32 #include "irc_string.h"
33 #include "conf.h"
34 #include "conf_parser.h" /* autogenerated header file */
35 #include "log.h"
36
37 #undef YY_INPUT
38 #define YY_FATAL_ERROR(msg) conf_yy_fatal_error(msg)
39 #define YY_INPUT(buf,result,max_size) \
40 if (!(result = conf_yy_input(buf, max_size))) \
41 YY_FATAL_ERROR("input in flex scanner failed");
42 #define MAX_INCLUDE_DEPTH 10
43
44
45 unsigned int lineno = 1;
46 char linebuf[IRCD_BUFSIZE];
47 char conffilebuf[IRCD_BUFSIZE];
48
49 static int include_stack_ptr = 0;
50 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
51 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
52 static FILE *inc_fbfile_in[MAX_INCLUDE_DEPTH];
53 static char conffile_stack[MAX_INCLUDE_DEPTH][IRCD_BUFSIZE];
54 static void ccomment(void);
55 static void cinclude(void);
56 static int ieof(void);
57
58 static int
59 conf_yy_input(char *lbuf, unsigned int max_size)
60 {
61 return !fgets(lbuf, max_size, conf_parser_ctx.conf_file) ? 0 : strlen(lbuf);
62 }
63
64 static int
65 conf_yy_fatal_error(const char *msg)
66 {
67 return 0;
68 }
69
70 %}
71
72 WS [[:blank:]]*
73 DIGIT [[:digit:]]+
74 COMMENT ("//"|"#").*
75 qstring \"[^\"\n]*[\"\n]
76 include \.include{WS}(\<.*\>|\".*\")
77
78 %%
79 {include} { cinclude(); }
80 "/*" { ccomment(); }
81
82 \n.* { strlcpy(linebuf, yytext+1, sizeof(linebuf)); ++lineno; yyless(1); }
83
84 {WS} ;
85 {COMMENT} ;
86
87 {DIGIT} { yylval.number = atoi(yytext); return NUMBER; }
88
89 {qstring} { if (yytext[yyleng-2] == '\\')
90 {
91 yyless(yyleng-1); /* return last quote */
92 yymore(); /* append next string */
93 }
94 else
95 {
96 yylval.string = yytext+1;
97 if(yylval.string[yyleng-2] != '"')
98 ilog(LOG_TYPE_IRCD, "Unterminated character string");
99 else
100 {
101 int i,j;
102
103 yylval.string[yyleng-2] = '\0'; /* remove close
104 * quote
105 */
106
107 for (j=i=0 ;yylval.string[i] != '\0'; i++,j++)
108 {
109 if (yylval.string[i] != '\\')
110 {
111 yylval.string[j] = yylval.string[i];
112 }
113 else
114 {
115 i++;
116 if (yylval.string[i] == '\0') /* XXX
117 * should not
118 * happen
119 */
120 {
121 ilog(LOG_TYPE_IRCD,
122 "Unterminated character string");
123 break;
124 }
125 yylval.string[j] = yylval.string[i];
126 }
127 }
128 yylval.string[j] = '\0';
129 return QSTRING;
130 }
131 }
132 }
133
134 accept_password { return ACCEPT_PASSWORD; }
135 admin { return ADMIN; }
136 administrator { return ADMIN; }
137 aftype { return AFTYPE; }
138 all { return T_ALL; }
139 auth { return IRCD_AUTH; }
140 autoconn { return AUTOCONN; }
141 can_flood { return CAN_FLOOD; }
142 caller_id_wait { return CALLER_ID_WAIT; }
143 opers_bypass_callerid { return OPERS_BYPASS_CALLERID; }
144 channel { return CHANNEL; }
145 cidr_bitlen_ipv4 { return CIDR_BITLEN_IPV4; }
146 cidr_bitlen_ipv6 { return CIDR_BITLEN_IPV6; }
147 class { return CLASS; }
148 cluster { return T_CLUSTER; }
149 connect { return CONNECT; }
150 connectfreq { return CONNECTFREQ; }
151 default_floodcount { return DEFAULT_FLOODCOUNT; }
152 default_split_server_count { return DEFAULT_SPLIT_SERVER_COUNT; }
153 default_split_user_count { return DEFAULT_SPLIT_USER_COUNT; }
154 deny { return DENY; }
155 description { return DESCRIPTION; }
156 die { return DIE; }
157 disable_auth { return DISABLE_AUTH; }
158 disable_fake_channels { return DISABLE_FAKE_CHANNELS; }
159 disable_remote_commands { return DISABLE_REMOTE_COMMANDS; }
160 dline { return T_DLINE; }
161 dots_in_ident { return DOTS_IN_IDENT; }
162 egdpool_path { return EGDPOOL_PATH; }
163 email { return EMAIL; }
164 encrypted { return ENCRYPTED; }
165 exceed_limit { return EXCEED_LIMIT; }
166 exempt { return EXEMPT; }
167 file { return T_FILE; }
168 flags { return IRCD_FLAGS; }
169 flatten_links { return FLATTEN_LINKS; }
170 gecos { return GECOS; }
171 general { return GENERAL; }
172 gline { return GLINE; }
173 gline_enable { return GLINE_ENABLE; }
174 gline_exempt { return GLINE_EXEMPT; }
175 gline_duration { return GLINE_DURATION; }
176 gline_request_duration { return GLINE_REQUEST_DURATION; }
177 gline_min_cidr { return GLINE_MIN_CIDR; }
178 gline_min_cidr6 { return GLINE_MIN_CIDR6; }
179 globops { return T_GLOBOPS; }
180 global_kill { return GLOBAL_KILL; }
181 have_ident { return NEED_IDENT; }
182 need_ident { return NEED_IDENT; }
183 havent_read_conf { return HAVENT_READ_CONF; }
184 hidden { return HIDDEN; }
185 hidden_name { return HIDDEN_NAME; }
186 hide_idle_from_opers { return HIDE_IDLE_FROM_OPERS; }
187 hide_server_ips { return HIDE_SERVER_IPS; }
188 hide_servers { return HIDE_SERVERS; }
189 hide_spoof_ips { return HIDE_SPOOF_IPS; }
190 host { return HOST; }
191 hub { return HUB; }
192 hub_mask { return HUB_MASK; }
193 ignore_bogus_ts { return IGNORE_BOGUS_TS; }
194 invisible_on_connect { return INVISIBLE_ON_CONNECT; }
195 ip { return IP; }
196 ipv4 { return T_IPV4; }
197 ipv6 { return T_IPV6; }
198 join_flood_count { return JOIN_FLOOD_COUNT; }
199 join_flood_time { return JOIN_FLOOD_TIME; }
200 kill { return KILL; }
201 kill_chase_time_limit { return KILL_CHASE_TIME_LIMIT; }
202 kline { return KLINE; }
203 kline_exempt { return KLINE_EXEMPT; }
204 leaf_mask { return LEAF_MASK; }
205 listen { return LISTEN; }
206 log { return T_LOG; }
207 masked { return TMASKED; }
208 max_clients { return T_MAX_CLIENTS; }
209 max_ident { return MAX_IDENT; }
210 max_idle { return MAX_IDLE; }
211 min_idle { return MIN_IDLE; }
212 max_local { return MAX_LOCAL; }
213 max_global { return MAX_GLOBAL; }
214 max_number { return MAX_NUMBER; }
215 max_nick_length { return MAX_NICK_LENGTH; }
216 max_topic_length { return MAX_TOPIC_LENGTH; }
217 max_watch { return MAX_WATCH; }
218 message_locale { return MESSAGE_LOCALE; }
219 min_nonwildcard { return MIN_NONWILDCARD; }
220 min_nonwildcard_simple { return MIN_NONWILDCARD_SIMPLE; }
221 name { return NAME; }
222 need_password { return NEED_PASSWORD; }
223 network_desc { return NETWORK_DESC; }
224 network_name { return NETWORK_NAME; }
225 nick { return NICK; }
226 nick_changes { return NICK_CHANGES; }
227 no { yylval.number = 0; return TBOOL; }
228 no_create_on_split { return NO_CREATE_ON_SPLIT; }
229 no_join_on_split { return NO_JOIN_ON_SPLIT; }
230 no_oper_flood { return NO_OPER_FLOOD; }
231 no_tilde { return NO_TILDE; }
232 number_per_cidr { return NUMBER_PER_CIDR; }
233 number_per_ip { return NUMBER_PER_IP; }
234 oper { return OPERATOR; }
235 oper_pass_resv { return OPER_PASS_RESV; }
236 operator { return OPERATOR; }
237 passwd { return PASSWORD; }
238 password { return PASSWORD; }
239 ping_cookie { return PING_COOKIE; }
240 ping_time { return PING_TIME; }
241 port { return PORT; }
242 quarantine { return RESV; }
243 quiet_on_ban { return QUIET_ON_BAN; }
244 random_idle { return RANDOM_IDLE; }
245 reason { return REASON; }
246 recvq { return T_RECVQ; }
247 redirport { return REDIRPORT; }
248 redirserv { return REDIRSERV; }
249 regex { return REGEX_T; }
250 rehash { return REHASH; }
251 remote { return REMOTE; }
252 remoteban { return REMOTEBAN; }
253 restart { return T_RESTART; }
254 restrict_channels { return RESTRICT_CHANNELS; }
255 resv { return RESV; }
256 resv_exempt { return RESV_EXEMPT; }
257 rsa_private_key_file { return RSA_PRIVATE_KEY_FILE; }
258 rsa_public_key_file { return RSA_PUBLIC_KEY_FILE; }
259 ssl { return T_SSL; }
260 ssl_certificate_file { return SSL_CERTIFICATE_FILE; }
261 ssl_client_method { return T_SSL_CLIENT_METHOD; }
262 ssl_server_method { return T_SSL_SERVER_METHOD; }
263 ssl_dh_param_file { return SSL_DH_PARAM_FILE; }
264 ssl_cipher_list { return T_SSL_CIPHER_LIST; }
265 sslv3 { return T_SSLV3; }
266 tlsv1 { return T_TLSV1; }
267 send_password { return SEND_PASSWORD; }
268 sendq { return SENDQ; }
269 server { return T_SERVER; }
270 serverhide { return SERVERHIDE; }
271 serverinfo { return SERVERINFO; }
272 service { return T_SERVICE; }
273 services_name { return T_SERVICES_NAME; }
274 set { return T_SET; }
275 shared { return T_SHARED; }
276 short_motd { return SHORT_MOTD; }
277 sid { return IRCD_SID; }
278 size { return T_SIZE; }
279 spoof { return SPOOF; }
280 spoof_notice { return SPOOF_NOTICE; }
281 tkline_expire_notices { return TKLINE_EXPIRE_NOTICES; }
282 type { return TYPE; }
283 true_no_oper_flood { return TRUE_NO_OPER_FLOOD; }
284 umodes { return T_UMODES; }
285 unkline { return UNKLINE; }
286 undline { return T_UNDLINE; }
287 unlimited { return T_UNLIMITED; }
288 use_egd { return USE_EGD; }
289 use_logging { return USE_LOGGING; }
290 throttle_time { return THROTTLE_TIME; }
291 user { return USER; }
292 vhost { return VHOST; }
293 vhost6 { return VHOST6; }
294 webirc { return T_WEBIRC; }
295 xline { return XLINE; }
296 yes { yylval.number = 1; return TBOOL; }
297
298 failed_oper_notice { return FAILED_OPER_NOTICE; }
299 max_accept { return MAX_ACCEPT; }
300 max_nick_changes { return MAX_NICK_CHANGES; }
301 max_chans_per_oper { return MAX_CHANS_PER_OPER; }
302 max_chans_per_user { return MAX_CHANS_PER_USER; }
303 max_nick_time { return MAX_NICK_TIME; }
304 anti_nick_flood { return ANTI_NICK_FLOOD; }
305 anti_spam_exit_message_time { return ANTI_SPAM_EXIT_MESSAGE_TIME; }
306 ts_max_delta { return TS_MAX_DELTA; }
307 ts_warn_delta { return TS_WARN_DELTA; }
308 links_delay { return LINKS_DELAY; }
309 warn_no_nline { return WARN_NO_NLINE; }
310
311 stats_e_disabled { return STATS_E_DISABLED; }
312 stats_o_oper_only { return STATS_O_OPER_ONLY; }
313 stats_k_oper_only { return STATS_K_OPER_ONLY; }
314 stats_i_oper_only { return STATS_I_OPER_ONLY; }
315 stats_P_oper_only { return STATS_P_OPER_ONLY; }
316 pace_wait { return PACE_WAIT; }
317 pace_wait_simple { return PACE_WAIT_SIMPLE; }
318 knock_delay { return KNOCK_DELAY; }
319 knock_delay_channel { return KNOCK_DELAY_CHANNEL; }
320 max_bans { return MAX_BANS; }
321 modules { return MODULES; }
322 module { return MODULE; }
323 path { return PATH; }
324 max_targets { return MAX_TARGETS; }
325
326 unxline { return T_UNXLINE; }
327 unresv { return T_UNRESV; }
328
329 oper_only_umodes { return OPER_ONLY_UMODES; }
330 oper_umodes { return OPER_UMODES; }
331 bots { return T_BOTS; }
332 cconn { return T_CCONN; }
333 cconn_full { return T_CCONN_FULL; }
334 deaf { return T_DEAF; }
335 debug { return T_DEBUG; }
336 full { return T_FULL; }
337 skill { return T_SKILL; }
338 nchange { return T_NCHANGE; }
339 rej { return T_REJ; }
340 unauth { return T_UNAUTH; }
341 spy { return T_SPY; }
342 external { return T_EXTERNAL; }
343 operwall { return T_OPERWALL; }
344 servnotice { return T_SERVNOTICE; }
345 invisible { return T_INVISIBLE; }
346 wallop { return T_WALLOP; }
347 callerid { return T_CALLERID; }
348 softcallerid { return T_SOFTCALLERID; }
349 locops { return T_LOCOPS; }
350
351 years { return YEARS; }
352 year { return YEARS; }
353 months { return MONTHS; }
354 month { return MONTHS; }
355 weeks { return WEEKS; }
356 week { return WEEKS; }
357 days { return DAYS; }
358 day { return DAYS; }
359 hours { return HOURS; }
360 hour { return HOURS; }
361 minutes { return MINUTES; }
362 minute { return MINUTES; }
363 seconds { return SECONDS; }
364 second { return SECONDS; }
365
366 bytes { return BYTES; }
367 byte { return BYTES; }
368 kilobytes { return KBYTES; }
369 kilobyte { return KBYTES; }
370 kbytes { return KBYTES; }
371 kbyte { return KBYTES; }
372 kb { return KBYTES; }
373 megabytes { return MBYTES; }
374 megabyte { return MBYTES; }
375 mbytes { return MBYTES; }
376 mbyte { return MBYTES; }
377 mb { return MBYTES; }
378 \.\. { return TWODOTS; }
379
380 . { return yytext[0]; }
381 <<EOF>> { if (ieof()) yyterminate(); }
382
383 %%
384
385 /* C-comment ignoring routine -kre*/
386 static void
387 ccomment(void)
388 {
389 int c = 0;
390
391 /* log(L_NOTICE, "got comment"); */
392 while (1)
393 {
394 while ((c = input()) != '*' && c != EOF)
395 if (c == '\n')
396 ++lineno;
397
398 if (c == '*')
399 {
400 while ((c = input()) == '*')
401 /* Nothing */ ;
402 if (c == '/')
403 break;
404 else if (c == '\n')
405 ++lineno;
406 }
407
408 if (c == EOF)
409 {
410 YY_FATAL_ERROR("EOF in comment");
411 /* XXX hack alert this disables
412 * the stupid unused function warning
413 * gcc generates
414 */
415 if (1 == 0)
416 yy_fatal_error("EOF in comment");
417 break;
418 }
419 }
420 }
421
422 /* C-style .includes. This function will properly swap input conf buffers,
423 * and lineno -kre */
424 static void
425 cinclude(void)
426 {
427 char *p = NULL;
428
429 if ((p = strchr(yytext, '<')) == NULL)
430 *strchr(p = strchr(yytext, '"') + 1, '"') = '\0';
431 else
432 *strchr(++p, '>') = '\0';
433
434 /* log(L_NOTICE, "got include %s!", c); */
435
436 /* do stacking and co. */
437 if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
438 ilog(LOG_TYPE_IRCD, "Includes nested too deep in %s", p);
439 else
440 {
441 FILE *tmp_fbfile_in = NULL;
442 char filenamebuf[IRCD_BUFSIZE];
443
444 if (*p == '/') /* if it is an absolute path */
445 snprintf(filenamebuf, sizeof(filenamebuf), "%s", p);
446 else
447 snprintf(filenamebuf, sizeof(filenamebuf), "%s/%s", ETCPATH, p);
448
449 tmp_fbfile_in = fopen(filenamebuf, "r");
450
451 if (tmp_fbfile_in == NULL)
452 {
453 ilog(LOG_TYPE_IRCD, "Unable to read configuration file '%s': %s",
454 filenamebuf, strerror(errno));
455 return;
456 }
457
458 lineno_stack[include_stack_ptr] = lineno;
459 lineno = 1;
460 inc_fbfile_in[include_stack_ptr] = conf_parser_ctx.conf_file;
461 strlcpy(conffile_stack[include_stack_ptr], conffilebuf, IRCD_BUFSIZE);
462 include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
463 conf_parser_ctx.conf_file = tmp_fbfile_in;
464 snprintf(conffilebuf, sizeof(conffilebuf), "%s", filenamebuf);
465 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
466 }
467 }
468
469 /* This is function that will be called on EOF in conf file. It will
470 * apropriately close conf if it not main conf and swap input buffers -kre
471 * */
472 static int
473 ieof(void)
474 {
475 /* log(L_NOTICE, "return from include stack!"); */
476 if (include_stack_ptr)
477 fclose(conf_parser_ctx.conf_file);
478 if (--include_stack_ptr < 0)
479 {
480 /* log(L_NOTICE, "terminating lexer"); */
481 /* We will now exit the lexer - restore init values if we get /rehash
482 * later and reenter lexer -kre */
483 include_stack_ptr = 0;
484 lineno = 1;
485 return 1;
486 }
487
488 /* switch buffer */
489 /* log(L_NOTICE, "deleting include_stack_ptr=%d", include_stack_ptr); */
490 yy_delete_buffer(YY_CURRENT_BUFFER);
491 lineno = lineno_stack[include_stack_ptr];
492 conf_parser_ctx.conf_file = inc_fbfile_in[include_stack_ptr];
493 strlcpy(conffilebuf, conffile_stack[include_stack_ptr], sizeof(conffilebuf));
494 yy_switch_to_buffer(include_stack[include_stack_ptr]);
495
496 return 0;
497 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision