summaryrefslogtreecommitdiff
path: root/src/message.cpp
blob: c53612b060d15b84b3cfd23af7838eceec7c2da2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
 *                       E-mail:
 *                <brain@chatspike.net>
 *           	  <Craig@chatspike.net>
 *     
 * Written by Craig Edwards, Craig McLure, and others.
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

using namespace std;

#include "inspircd_config.h"
#include "inspircd.h"
#include "inspircd_io.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/errno.h>
#include <sys/utsname.h>
#include <time.h>
#include <string>
#ifdef GCC3
#include <ext/hash_map>
#else
#include <hash_map>
#endif
#include <map>
#include <sstream>
#include <vector>
#include <deque>
#include "users.h"
#include "ctables.h"
#include "globals.h"
#include "modules.h"
#include "dynamic.h"
#include "wildcard.h"
#include "commands.h"
#include "message.h"
#include "inspstring.h"
#include "dns.h"
#include "helperfuncs.h"

extern int MODCOUNT;
extern std::vector<Module*> modules;
extern std::vector<ircd_module*> factory;
extern time_t TIME;
extern ServerConfig* Config;

/* return 0 or 1 depending if users u and u2 share one or more common channels
 * (used by QUIT, NICK etc which arent channel specific notices) */

int common_channels(userrec *u, userrec *u2)
{
	if ((!u) || (!u2))
	{
		log(DEFAULT,"*** BUG *** common_channels was given an invalid parameter");
		return 0;
	}
	for (unsigned int i = 0; i < u->chans.size(); i++)
	{
		for (unsigned int z = 0; z != u2->chans.size(); z++)
		{
			if ((u->chans[i].channel != NULL) && (u2->chans[z].channel != NULL))
			{
				if ((!strcasecmp(u->chans[i].channel->name,u2->chans[z].channel->name)) && (u->chans[i].channel) && (u2->chans[z].channel) && (u->registered == 7) && (u2->registered == 7))
				{
					if ((c_count(u)) && (c_count(u2)))
					{
						return 1;
					}
				}
			}
		}
	}
	return 0;
}

void tidystring(char* str)
{
	// strips out double spaces before a : parameter

	char temp[MAXBUF];
	bool go_again = true;

	if (!str)
		return;

	// pointer voodoo++ --w00t
	while ((*str) && (*str == ' '))
		str++;

	while (go_again)
	{
		bool noparse = false;
		int t = 0, a = 0;
		go_again = false;
		const int lenofstr = strlen(str);

		/*
		 * by caching strlen() of str, we theoretically avoid 3 expensive calls each time this loop
		 * rolls around.. should speed things up a nanosecond or two. ;)
		 */

		while (a < lenofstr)
		{
			if ((a < lenofstr - 1) && (noparse == false))
			{
				if ((str[a] == ' ') && (str[a+1] == ' '))
				{
					log(DEBUG,"Tidied extra space out of string: %s",str);
					go_again = true;
					a++;
				}
			}

			if (a < lenofstr - 1)
			{
				if ((str[a] == ' ') && (str[a+1] == ':'))
				{
					noparse = true;
				}
			}

			temp[t++] = str[a++];
		}

		temp[t] = '\0';
		strlcpy(str,temp,MAXBUF);
	}
}

/* chop a string down to 512 characters and preserve linefeed (irc max
 * line length) */

void chop(char* str)
{
	if (!str)
	{
		log(DEBUG,"ERROR! Null string passed to chop()!");
		return;
	}
	if (strlen(str) >= 511)
	{
		str[510] = '\r';
		str[511] = '\n';
		str[512] = '\0';
		log(DEBUG,"Excess line chopped.");
	}
}


void Blocking(int s)
{
	int flags;
	log(DEBUG,"Blocking: %d",s);
	flags = fcntl(s, F_GETFL, 0);
	fcntl(s, F_SETFL, flags ^ O_NONBLOCK);
}

void NonBlocking(int s)
{
	int flags;
	log(DEBUG,"NonBlocking: %d",s);
	flags = fcntl(s, F_GETFL, 0);
	fcntl(s, F_SETFL, flags | O_NONBLOCK);
}

int CleanAndResolve (char *resolvedHost, const char *unresolvedHost)
{
	DNS d(Config->DNSServer);
	int fd = d.ReverseLookup(unresolvedHost);
	if (fd < 0)
		return 0;
	time_t T = time(NULL)+1;
	while ((!d.HasResult()) && (time(NULL)<T));
	std::string ipaddr = d.GetResult();
	strlcpy(resolvedHost,ipaddr.c_str(),MAXBUF);
	return (ipaddr != "");
}

int c_count(userrec* u)
{
	int z = 0;
	for (unsigned int i =0; i < u->chans.size(); i++)
		if (u->chans[i].channel != NULL)
			z++;
	return z;

}

bool hasumode(userrec* user, char mode)
{
	if (user)
	{
		return (strchr(user->modes,mode)>0);
	}
	else return false;
}


void ChangeName(userrec* user, const char* gecos)
{
	if (user->fd > -1)
	{
		int MOD_RESULT = 0;
		FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(user,gecos));
		if (MOD_RESULT)
			return;
		FOREACH_MOD(I_OnChangeName,OnChangeName(user,gecos));
	}
	strlcpy(user->fullname,gecos,MAXBUF);
}

void ChangeDisplayedHost(userrec* user, const char* host)
{
        if (user->fd > -1)
        {
                int MOD_RESULT = 0;
                FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(user,host));
                if (MOD_RESULT)
                        return;
		FOREACH_MOD(I_OnChangeHost,OnChangeHost(user,host));
        }
	strlcpy(user->dhost,host,160);
	WriteServ(user->fd,"396 %s %s :is now your hidden host",user->nick,user->dhost);
}

/* verify that a user's ident and nickname is valid */

int isident(const char* n)
{
        if (!n)

        {
                return 0;
        }
        if (!strcmp(n,""))
        {
                return 0;
        }
        for (char* i = (char*)n; *i; i++)
        {
                if ((*i >= 'A') && (*i <= '}'))
                {
                        continue;
                }
                if (strchr(".-0123456789",*i))
                {
                        continue;
                }
		return 0;
        }
        return 1;
}


int isnick(const char* n)
{
	if (!n || !*n)
	{
		return 0;
	}
	if (strlen(n) > NICKMAX)
	{
		return 0;
	}
	for (char* i = (char*)n; *i; i++)
	{
		/* can occur anywhere in a nickname */
		if ((*i >= 'A') && (*i <= '}'))
		{
			continue;
		}
		/* can occur anywhere BUT the first char of a nickname */
		if ((strchr("-0123456789",*i)) && (i > n))
		{
			continue;
		}
		/* invalid character! abort */
		return 0;
	}
	return 1;
}

/* returns the status character for a given user on a channel, e.g. @ for op,
 * % for halfop etc. If the user has several modes set, the highest mode
 * the user has must be returned. */

char* cmode(userrec *user, chanrec *chan)
{
	if ((!user) || (!chan))
	{
		log(DEFAULT,"*** BUG *** cmode was given an invalid parameter");
		return "";
	}

	for (unsigned int i = 0; i < user->chans.size(); i++)
	{
		if (user->chans[i].channel)
		{
			if ((!strcasecmp(user->chans[i].channel->name,chan->name)) && (chan != NULL))
			{
				if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
				{
					return "@";
				}
				if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
				{
					return "%";
				}
				if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
				{
					return "+";
				}
				return "";
			}
		}
	}
	return "";
}

/* returns the status value for a given user on a channel, e.g. STATUS_OP for
 * op, STATUS_VOICE for voice etc. If the user has several modes set, the
 * highest mode the user has must be returned. */

int cstatus(userrec *user, chanrec *chan)
{
	if ((!chan) || (!user))
	{
		log(DEFAULT,"*** BUG *** cstatus was given an invalid parameter");
		return 0;
	}

	if (is_uline(user->server))
		return STATUS_OP;

	for (unsigned int i = 0; i < user->chans.size(); i++)
	{
		if (user->chans[i].channel)
		{
			if ((!strcasecmp(user->chans[i].channel->name,chan->name)) && (chan != NULL))
			{
				if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
				{
					return STATUS_OP;
				}
				if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
				{
					return STATUS_HOP;
				}
				if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
				{
					return STATUS_VOICE;
				}
				return STATUS_NORMAL;
			}
		}
	}
	return STATUS_NORMAL;
}

/* returns 1 if user u has channel c in their record, 0 if not */

int has_channel(userrec *u, chanrec *c)
{
	if ((!u) || (!c))
	{
		log(DEFAULT,"*** BUG *** has_channel was given an invalid parameter");
		return 0;
	}
	for (unsigned int i =0; i < u->chans.size(); i++)
	{
		if (u->chans[i].channel)
		{
			if (!strcasecmp(u->chans[i].channel->name,c->name))
			{
				return 1;
			}
		}
	}
	return 0;
}


void TidyBan(char *ban)
{
	if (!ban) {
		log(DEFAULT,"*** BUG *** TidyBan was given an invalid parameter");
		return;
	}
	
	char temp[MAXBUF],NICK[MAXBUF],IDENT[MAXBUF],HOST[MAXBUF];

	strlcpy(temp,ban,MAXBUF);

	char* pos_of_pling = strchr(temp,'!');
	char* pos_of_at = strchr(temp,'@');

	pos_of_pling[0] = '\0';
	pos_of_at[0] = '\0';
	pos_of_pling++;
	pos_of_at++;

	strlcpy(NICK,temp,NICKMAX);
	strlcpy(IDENT,pos_of_pling,IDENTMAX+1);
	strlcpy(HOST,pos_of_at,160);

	snprintf(ban,MAXBUF,"%s!%s@%s",NICK,IDENT,HOST);
}

char lst[MAXBUF];

std::string chlist(userrec *user,userrec* source)
{
	std::string cmp = "";
	std::string lst = "";
        log(DEBUG,"chlist: %s",user->nick);
	if (!user)
	{
		return lst;
	}
	for (unsigned int i = 0; i < user->chans.size(); i++)
	{
		if (user->chans[i].channel != NULL)
		{
			if (user->chans[i].channel->name)
			{
				cmp = std::string(user->chans[i].channel->name) + " ";
				if (!strstr(lst.c_str(),cmp.c_str()))
				{
					// if the channel is NOT private/secret, OR the source user is on the channel
					if (((!(user->chans[i].channel->binarymodes & CM_PRIVATE)) && (!(user->chans[i].channel->binarymodes & CM_SECRET))) || (has_channel(source,user->chans[i].channel)))
					{
						lst = lst + std::string(cmode(user,user->chans[i].channel)) + std::string(user->chans[i].channel->name) + " ";
					}
				}
			}
		}
	}
	return lst;
}