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root/svn/ircd-hybrid/trunk/src/conf_lexer.l
Revision: 3860
Committed: Thu Jun 5 19:55:07 2014 UTC (12 years, 1 month ago) by michael
File size: 19363 byte(s)
Log Message:
- Made the INVITE/KNOCK throttling logic less aggressive as requested by Adam

File Contents

# User Rev Content
1 adx 30 /*
2 michael 2916 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 adx 30 *
4 michael 2916 * Copyright (c) 2000-2014 ircd-hybrid development team
5 adx 30 *
6     * This program is free software; you can redistribute it and/or modify
7     * it under the terms of the GNU General Public License as published by
8     * the Free Software Foundation; either version 2 of the License, or
9     * (at your option) any later version.
10     *
11     * This program is distributed in the hope that it will be useful,
12     * but WITHOUT ANY WARRANTY; without even the implied warranty of
13     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     * GNU General Public License for more details.
15     *
16     * You should have received a copy of the GNU General Public License
17     * along with this program; if not, write to the Free Software
18     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19     * USA
20     */
21    
22 michael 2916 /*! \file ircd_lexer.l
23     * \brief Scans the ircd configuration file for tokens.
24     * \version $Id$
25     */
26    
27 adx 30 %option case-insensitive
28     %option noyywrap
29     %option nounput
30     %option never-interactive
31    
32     %{
33     #include "stdinc.h"
34     #include "irc_string.h"
35 michael 1309 #include "conf.h"
36     #include "conf_parser.h" /* autogenerated header file */
37     #include "log.h"
38 adx 30
39     #undef YY_INPUT
40     #define YY_FATAL_ERROR(msg) conf_yy_fatal_error(msg)
41     #define YY_INPUT(buf,result,max_size) \
42 michael 1353 if (!(result = conf_yy_input(buf, max_size))) \
43 michael 2916 YY_FATAL_ERROR("input in flex scanner failed");
44 adx 30 #define MAX_INCLUDE_DEPTH 10
45    
46    
47     unsigned int lineno = 1;
48     char linebuf[IRCD_BUFSIZE];
49     char conffilebuf[IRCD_BUFSIZE];
50    
51     static int include_stack_ptr = 0;
52     static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
53     static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
54 michael 1325 static FILE *inc_fbfile_in[MAX_INCLUDE_DEPTH];
55 adx 30 static char conffile_stack[MAX_INCLUDE_DEPTH][IRCD_BUFSIZE];
56     static void ccomment(void);
57     static void cinclude(void);
58     static int ieof(void);
59 michael 1353
60     static int
61     conf_yy_input(char *lbuf, unsigned int max_size)
62     {
63     return !fgets(lbuf, max_size, conf_parser_ctx.conf_file) ? 0 : strlen(lbuf);
64     }
65    
66     static int
67     conf_yy_fatal_error(const char *msg)
68     {
69     return 0;
70     }
71    
72 adx 30 %}
73    
74     WS [[:blank:]]*
75     DIGIT [[:digit:]]+
76     COMMENT ("//"|"#").*
77     qstring \"[^\"\n]*[\"\n]
78     include \.include{WS}(\<.*\>|\".*\")
79    
80     %%
81     {include} { cinclude(); }
82 michael 2916 "/*" { ccomment(); }
83 adx 30
84 michael 2916 \n.* { strlcpy(linebuf, yytext+1, sizeof(linebuf)); ++lineno; yyless(1); }
85 adx 30
86     {WS} ;
87     {COMMENT} ;
88    
89     {DIGIT} { yylval.number = atoi(yytext); return NUMBER; }
90    
91     {qstring} { if (yytext[yyleng-2] == '\\')
92     {
93     yyless(yyleng-1); /* return last quote */
94     yymore(); /* append next string */
95     }
96     else
97     {
98     yylval.string = yytext+1;
99     if(yylval.string[yyleng-2] != '"')
100 michael 1247 ilog(LOG_TYPE_IRCD, "Unterminated character string");
101 adx 30 else
102     {
103     int i,j;
104    
105     yylval.string[yyleng-2] = '\0'; /* remove close
106 michael 2916 * quote
107 adx 30 */
108 michael 2916
109 adx 30 for (j=i=0 ;yylval.string[i] != '\0'; i++,j++)
110     {
111     if (yylval.string[i] != '\\')
112     {
113     yylval.string[j] = yylval.string[i];
114     }
115     else
116     {
117     i++;
118 michael 2916 if (yylval.string[i] == '\0') /* XXX
119 adx 30 * should not
120     * happen
121     */
122     {
123 michael 1247 ilog(LOG_TYPE_IRCD,
124 adx 30 "Unterminated character string");
125     break;
126     }
127     yylval.string[j] = yylval.string[i];
128     }
129     }
130     yylval.string[j] = '\0';
131     return QSTRING;
132     }
133     }
134     }
135    
136 michael 2129 accept_password { return ACCEPT_PASSWORD; }
137     admin { return ADMIN; }
138     administrator { return ADMIN; }
139     aftype { return AFTYPE; }
140     all { return T_ALL; }
141     anti_nick_flood { return ANTI_NICK_FLOOD; }
142     anti_spam_exit_message_time { return ANTI_SPAM_EXIT_MESSAGE_TIME; }
143     auth { return IRCD_AUTH; }
144     autoconn { return AUTOCONN; }
145     bots { return T_BOTS; }
146     caller_id_wait { return CALLER_ID_WAIT; }
147     callerid { return T_CALLERID; }
148     can_flood { return CAN_FLOOD; }
149     cconn { return T_CCONN; }
150     channel { return CHANNEL; }
151     cidr_bitlen_ipv4 { return CIDR_BITLEN_IPV4; }
152     cidr_bitlen_ipv6 { return CIDR_BITLEN_IPV6; }
153     class { return CLASS; }
154     cluster { return T_CLUSTER; }
155     connect { return CONNECT; }
156     connectfreq { return CONNECTFREQ; }
157 michael 2283 cycle_on_host_change { return CYCLE_ON_HOST_CHANGE; }
158 michael 2129 deaf { return T_DEAF; }
159     debug { return T_DEBUG; }
160     default_floodcount { return DEFAULT_FLOODCOUNT; }
161     default_split_server_count { return DEFAULT_SPLIT_SERVER_COUNT; }
162     default_split_user_count { return DEFAULT_SPLIT_USER_COUNT; }
163     deny { return DENY; }
164     description { return DESCRIPTION; }
165     die { return DIE; }
166     disable_auth { return DISABLE_AUTH; }
167     disable_fake_channels { return DISABLE_FAKE_CHANNELS; }
168     disable_remote_commands { return DISABLE_REMOTE_COMMANDS; }
169     dline { return T_DLINE; }
170     dots_in_ident { return DOTS_IN_IDENT; }
171     egdpool_path { return EGDPOOL_PATH; }
172     email { return EMAIL; }
173     encrypted { return ENCRYPTED; }
174     exceed_limit { return EXCEED_LIMIT; }
175     exempt { return EXEMPT; }
176     external { return T_EXTERNAL; }
177     failed_oper_notice { return FAILED_OPER_NOTICE; }
178     farconnect { return T_FARCONNECT; }
179     file { return T_FILE; }
180     flags { return IRCD_FLAGS; }
181     flatten_links { return FLATTEN_LINKS; }
182     full { return T_FULL; }
183     gecos { return GECOS; }
184     general { return GENERAL; }
185     gline { return GLINE; }
186     gline_duration { return GLINE_DURATION; }
187     gline_enable { return GLINE_ENABLE; }
188     gline_exempt { return GLINE_EXEMPT; }
189     gline_min_cidr { return GLINE_MIN_CIDR; }
190     gline_min_cidr6 { return GLINE_MIN_CIDR6; }
191     gline_request_duration { return GLINE_REQUEST_DURATION; }
192     global_kill { return GLOBAL_KILL; }
193     globops { return T_GLOBOPS; }
194     have_ident { return NEED_IDENT; }
195     havent_read_conf { return HAVENT_READ_CONF; }
196     hidden { return HIDDEN; }
197     hidden_name { return HIDDEN_NAME; }
198 michael 3513 hidechans { return HIDE_CHANS; }
199 michael 3506 hideidle { return HIDE_IDLE; }
200 michael 2129 hide_idle_from_opers { return HIDE_IDLE_FROM_OPERS; }
201     hide_server_ips { return HIDE_SERVER_IPS; }
202     hide_servers { return HIDE_SERVERS; }
203     hide_services { return HIDE_SERVICES; }
204     hide_spoof_ips { return HIDE_SPOOF_IPS; }
205     host { return HOST; }
206     hub { return HUB; }
207     hub_mask { return HUB_MASK; }
208     ignore_bogus_ts { return IGNORE_BOGUS_TS; }
209     invisible { return T_INVISIBLE; }
210     invisible_on_connect { return INVISIBLE_ON_CONNECT; }
211 michael 3860 invite_client_count { return INVITE_CLIENT_COUNT; }
212     invite_client_time { return INVITE_CLIENT_TIME; }
213 michael 2129 ip { return IP; }
214     ipv4 { return T_IPV4; }
215     ipv6 { return T_IPV6; }
216     join_flood_count { return JOIN_FLOOD_COUNT; }
217     join_flood_time { return JOIN_FLOOD_TIME; }
218     kill { return KILL; }
219     kill_chase_time_limit { return KILL_CHASE_TIME_LIMIT; }
220     kline { return KLINE; }
221     kline_exempt { return KLINE_EXEMPT; }
222 michael 3860 knock_client_count { return KNOCK_CLIENT_COUNT; }
223     knock_client_time { return KNOCK_CLIENT_TIME; }
224 michael 2129 knock_delay_channel { return KNOCK_DELAY_CHANNEL; }
225     leaf_mask { return LEAF_MASK; }
226     links_delay { return LINKS_DELAY; }
227     listen { return LISTEN; }
228     locops { return T_LOCOPS; }
229     log { return T_LOG; }
230     mask { return MASK; }
231     masked { return TMASKED; }
232     max_accept { return MAX_ACCEPT; }
233     max_bans { return MAX_BANS; }
234     max_chans_per_oper { return MAX_CHANS_PER_OPER; }
235     max_chans_per_user { return MAX_CHANS_PER_USER; }
236     max_clients { return T_MAX_CLIENTS; }
237     max_global { return MAX_GLOBAL; }
238     max_ident { return MAX_IDENT; }
239     max_idle { return MAX_IDLE; }
240     max_local { return MAX_LOCAL; }
241     max_nick_changes { return MAX_NICK_CHANGES; }
242     max_nick_length { return MAX_NICK_LENGTH; }
243     max_nick_time { return MAX_NICK_TIME; }
244     max_number { return MAX_NUMBER; }
245     max_targets { return MAX_TARGETS; }
246     max_topic_length { return MAX_TOPIC_LENGTH; }
247     max_watch { return MAX_WATCH; }
248     min_idle { return MIN_IDLE; }
249     min_nonwildcard { return MIN_NONWILDCARD; }
250     min_nonwildcard_simple { return MIN_NONWILDCARD_SIMPLE; }
251     module { return MODULE; }
252     modules { return MODULES; }
253 michael 2150 motd { return MOTD; }
254 michael 2129 name { return NAME; }
255     nchange { return T_NCHANGE; }
256     need_ident { return NEED_IDENT; }
257     need_password { return NEED_PASSWORD; }
258     network_desc { return NETWORK_DESC; }
259     network_name { return NETWORK_NAME; }
260     nick { return NICK; }
261     no_create_on_split { return NO_CREATE_ON_SPLIT; }
262     no_join_on_split { return NO_JOIN_ON_SPLIT; }
263     no_oper_flood { return NO_OPER_FLOOD; }
264     no_tilde { return NO_TILDE; }
265     nononreg { return T_NONONREG; }
266     number_per_cidr { return NUMBER_PER_CIDR; }
267     number_per_ip { return NUMBER_PER_IP; }
268     oper { return OPERATOR; }
269     oper_only_umodes { return OPER_ONLY_UMODES; }
270     oper_pass_resv { return OPER_PASS_RESV; }
271     oper_umodes { return OPER_UMODES; }
272     operator { return OPERATOR; }
273     opers_bypass_callerid { return OPERS_BYPASS_CALLERID; }
274     operwall { return T_OPERWALL; }
275     pace_wait { return PACE_WAIT; }
276     pace_wait_simple { return PACE_WAIT_SIMPLE; }
277     passwd { return PASSWORD; }
278     password { return PASSWORD; }
279     path { return PATH; }
280     ping_cookie { return PING_COOKIE; }
281     ping_time { return PING_TIME; }
282     port { return PORT; }
283     quarantine { return RESV; }
284     random_idle { return RANDOM_IDLE; }
285     reason { return REASON; }
286     recvq { return T_RECVQ; }
287     redirport { return REDIRPORT; }
288     redirserv { return REDIRSERV; }
289     rehash { return REHASH; }
290     rej { return T_REJ; }
291     remote { return REMOTE; }
292     remoteban { return REMOTEBAN; }
293     restart { return T_RESTART; }
294     resv { return RESV; }
295     resv_exempt { return RESV_EXEMPT; }
296     rsa_private_key_file { return RSA_PRIVATE_KEY_FILE; }
297     rsa_public_key_file { return RSA_PUBLIC_KEY_FILE; }
298     send_password { return SEND_PASSWORD; }
299     sendq { return SENDQ; }
300     server { return T_SERVER; }
301     serverhide { return SERVERHIDE; }
302     serverinfo { return SERVERINFO; }
303     service { return T_SERVICE; }
304     services_name { return T_SERVICES_NAME; }
305     servnotice { return T_SERVNOTICE; }
306     set { return T_SET; }
307     shared { return T_SHARED; }
308     short_motd { return SHORT_MOTD; }
309     sid { return IRCD_SID; }
310     size { return T_SIZE; }
311     skill { return T_SKILL; }
312     softcallerid { return T_SOFTCALLERID; }
313     spoof { return SPOOF; }
314     spoof_notice { return SPOOF_NOTICE; }
315     spy { return T_SPY; }
316     squit { return SQUIT; }
317     ssl { return T_SSL; }
318 adx 30 ssl_certificate_file { return SSL_CERTIFICATE_FILE; }
319 michael 2244 ssl_certificate_fingerprint { return SSL_CERTIFICATE_FINGERPRINT; }
320 michael 2129 ssl_cipher_list { return T_SSL_CIPHER_LIST; }
321     ssl_client_method { return T_SSL_CLIENT_METHOD; }
322 michael 2248 ssl_connection_required { return SSL_CONNECTION_REQUIRED; }
323 michael 2129 ssl_dh_param_file { return SSL_DH_PARAM_FILE; }
324     ssl_server_method { return T_SSL_SERVER_METHOD; }
325     sslv3 { return T_SSLV3; }
326     stats_e_disabled { return STATS_E_DISABLED; }
327     stats_i_oper_only { return STATS_I_OPER_ONLY; }
328     stats_k_oper_only { return STATS_K_OPER_ONLY; }
329     stats_o_oper_only { return STATS_O_OPER_ONLY; }
330     stats_P_oper_only { return STATS_P_OPER_ONLY; }
331 michael 2269 stats_u_oper_only { return STATS_U_OPER_ONLY; }
332 michael 2129 throttle_time { return THROTTLE_TIME; }
333     tkline_expire_notices { return TKLINE_EXPIRE_NOTICES; }
334     tlsv1 { return T_TLSV1; }
335     true_no_oper_flood { return TRUE_NO_OPER_FLOOD; }
336     ts_max_delta { return TS_MAX_DELTA; }
337     ts_warn_delta { return TS_WARN_DELTA; }
338     type { return TYPE; }
339     umodes { return T_UMODES; }
340     unauth { return T_UNAUTH; }
341     undline { return T_UNDLINE; }
342     unkline { return UNKLINE; }
343     unlimited { return T_UNLIMITED; }
344     unresv { return T_UNRESV; }
345     unxline { return T_UNXLINE; }
346     use_egd { return USE_EGD; }
347     use_logging { return USE_LOGGING; }
348 michael 2916 user { return USER; }
349 michael 2129 vhost { return VHOST; }
350     vhost6 { return VHOST6; }
351     wallop { return T_WALLOP; }
352     wallops { return T_WALLOPS; }
353 michael 3473 warn_no_connect_block { return WARN_NO_CONNECT_BLOCK; }
354 michael 2129 webirc { return T_WEBIRC; }
355     xline { return XLINE; }
356 adx 30
357 michael 2129 yes { yylval.number = 1; return TBOOL; }
358     no { yylval.number = 0; return TBOOL; }
359 adx 30
360 michael 2129 years { return YEARS; }
361     year { return YEARS; }
362     months { return MONTHS; }
363     month { return MONTHS; }
364     weeks { return WEEKS; }
365     week { return WEEKS; }
366     days { return DAYS; }
367     day { return DAYS; }
368     hours { return HOURS; }
369     hour { return HOURS; }
370     minutes { return MINUTES; }
371     minute { return MINUTES; }
372     seconds { return SECONDS; }
373     second { return SECONDS; }
374 adx 30
375 michael 2129 bytes { return BYTES; }
376     byte { return BYTES; }
377     kilobytes { return KBYTES; }
378     kilobyte { return KBYTES; }
379     kbytes { return KBYTES; }
380     kbyte { return KBYTES; }
381     kb { return KBYTES; }
382     megabytes { return MBYTES; }
383     megabyte { return MBYTES; }
384     mbytes { return MBYTES; }
385     mbyte { return MBYTES; }
386     mb { return MBYTES; }
387     \.\. { return TWODOTS; }
388 adx 30
389 michael 2129 . { return yytext[0]; }
390     <<EOF>> { if (ieof()) yyterminate(); }
391 adx 30
392     %%
393    
394     /* C-comment ignoring routine -kre*/
395     static void
396     ccomment(void)
397     {
398     int c = 0;
399    
400     /* log(L_NOTICE, "got comment"); */
401     while (1)
402     {
403     while ((c = input()) != '*' && c != EOF)
404     if (c == '\n')
405     ++lineno;
406    
407     if (c == '*')
408     {
409     while ((c = input()) == '*')
410     /* Nothing */ ;
411     if (c == '/')
412     break;
413     else if (c == '\n')
414     ++lineno;
415     }
416    
417     if (c == EOF)
418     {
419     YY_FATAL_ERROR("EOF in comment");
420     /* XXX hack alert this disables
421     * the stupid unused function warning
422 michael 2916 * gcc generates
423 adx 30 */
424     if (1 == 0)
425     yy_fatal_error("EOF in comment");
426     break;
427     }
428     }
429     }
430    
431     /* C-style .includes. This function will properly swap input conf buffers,
432     * and lineno -kre */
433     static void
434     cinclude(void)
435     {
436     char *p = NULL;
437    
438     if ((p = strchr(yytext, '<')) == NULL)
439     *strchr(p = strchr(yytext, '"') + 1, '"') = '\0';
440     else
441     *strchr(++p, '>') = '\0';
442    
443     /* log(L_NOTICE, "got include %s!", c); */
444    
445 michael 2916 /* do stacking and co. */
446 adx 30 if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
447 michael 1247 ilog(LOG_TYPE_IRCD, "Includes nested too deep in %s", p);
448 adx 30 else
449     {
450 michael 1325 FILE *tmp_fbfile_in = NULL;
451 adx 30 char filenamebuf[IRCD_BUFSIZE];
452    
453     if (*p == '/') /* if it is an absolute path */
454     snprintf(filenamebuf, sizeof(filenamebuf), "%s", p);
455     else
456     snprintf(filenamebuf, sizeof(filenamebuf), "%s/%s", ETCPATH, p);
457    
458 michael 1325 tmp_fbfile_in = fopen(filenamebuf, "r");
459 michael 2916
460 adx 30 if (tmp_fbfile_in == NULL)
461     {
462 michael 1247 ilog(LOG_TYPE_IRCD, "Unable to read configuration file '%s': %s",
463 adx 30 filenamebuf, strerror(errno));
464     return;
465     }
466    
467     lineno_stack[include_stack_ptr] = lineno;
468     lineno = 1;
469 michael 967 inc_fbfile_in[include_stack_ptr] = conf_parser_ctx.conf_file;
470 adx 30 strlcpy(conffile_stack[include_stack_ptr], conffilebuf, IRCD_BUFSIZE);
471     include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
472 michael 967 conf_parser_ctx.conf_file = tmp_fbfile_in;
473 michael 711 snprintf(conffilebuf, sizeof(conffilebuf), "%s", filenamebuf);
474 adx 30 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
475     }
476     }
477    
478     /* This is function that will be called on EOF in conf file. It will
479     * apropriately close conf if it not main conf and swap input buffers -kre
480     * */
481     static int
482     ieof(void)
483     {
484     /* log(L_NOTICE, "return from include stack!"); */
485     if (include_stack_ptr)
486 michael 1325 fclose(conf_parser_ctx.conf_file);
487 adx 30 if (--include_stack_ptr < 0)
488     {
489     /* log(L_NOTICE, "terminating lexer"); */
490     /* We will now exit the lexer - restore init values if we get /rehash
491     * later and reenter lexer -kre */
492     include_stack_ptr = 0;
493     lineno = 1;
494     return 1;
495     }
496    
497     /* switch buffer */
498     /* log(L_NOTICE, "deleting include_stack_ptr=%d", include_stack_ptr); */
499     yy_delete_buffer(YY_CURRENT_BUFFER);
500     lineno = lineno_stack[include_stack_ptr];
501 michael 967 conf_parser_ctx.conf_file = inc_fbfile_in[include_stack_ptr];
502 michael 2916 strlcpy(conffilebuf, conffile_stack[include_stack_ptr], sizeof(conffilebuf));
503 adx 30 yy_switch_to_buffer(include_stack[include_stack_ptr]);
504    
505     return 0;
506     }

Properties

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