/[cvs]/eggdrop1.9/src/dccutil.c
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Annotation of /eggdrop1.9/src/dccutil.c

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Revision 1.16 - (hide annotations) (download) (as text)
Mon Jan 17 22:36:06 2000 UTC (19 years, 9 months ago) by fabian
Branch: MAIN
Changes since 1.15: +2 -2 lines
File MIME type: text/x-chdr
Eule's copyright patch, updated by him for 1.5

1 fabian 1.10 /*
2 segfault 1.1 * dccutil.c -- handles:
3 fabian 1.10 * lots of little functions to send formatted text to
4     * varying types of connections
5     * '.who', '.whom', and '.dccstat' code
6     * memory management for dcc structures
7     * timeout checking for dcc connections
8     *
9 segfault 1.1 * dprintf'ized, 28aug1995
10 fabian 1.10 *
11 fabian 1.16 * $Id: dccutil.c,v 1.15 2000/01/17 21:59:10 fabian Exp $
12 segfault 1.1 */
13 fabian 1.10 /*
14     * Copyright (C) 1997 Robey Pointer
15 fabian 1.16 * Copyright (C) 1999, 2000 Eggheads
16 fabian 1.10 *
17     * This program is free software; you can redistribute it and/or
18     * modify it under the terms of the GNU General Public License
19     * as published by the Free Software Foundation; either version 2
20     * of the License, or (at your option) any later version.
21     *
22     * This program is distributed in the hope that it will be useful,
23     * but WITHOUT ANY WARRANTY; without even the implied warranty of
24     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25     * GNU General Public License for more details.
26     *
27     * You should have received a copy of the GNU General Public License
28     * along with this program; if not, write to the Free Software
29     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 segfault 1.1 */
31    
32     #include "main.h"
33     #include <sys/stat.h>
34     #include <errno.h>
35     #include "chan.h"
36     #include "modules.h"
37     #include "tandem.h"
38    
39     extern struct dcc_t *dcc;
40 fabian 1.15 extern int dcc_total, max_dcc, dcc_flood_thr, backgrd;
41     extern char botnetnick[], spaces[], version[];
42 segfault 1.1 extern time_t now;
43    
44 fabian 1.4 char motdfile[121] = "text/motd"; /* file where the motd is stored */
45 segfault 1.1 int connect_timeout = 15; /* how long to wait before a telnet
46     * connection times out */
47     int reserved_port = 0;
48    
49     extern sock_list *socklist;
50     extern int MAXSOCKS;
51    
52     void init_dcc_max()
53     {
54     int osock = MAXSOCKS;
55    
56     if (max_dcc < 1)
57     max_dcc = 1;
58     if (dcc)
59     dcc = nrealloc(dcc, sizeof(struct dcc_t) * max_dcc);
60    
61     else
62     dcc = nmalloc(sizeof(struct dcc_t) * max_dcc);
63    
64     MAXSOCKS = max_dcc + 10;
65     if (socklist)
66     socklist = (sock_list *) nrealloc((void *) socklist,
67     sizeof(sock_list) * MAXSOCKS);
68     else
69     socklist = (sock_list *) nmalloc(sizeof(sock_list) * MAXSOCKS);
70     for (; osock < MAXSOCKS; osock++)
71     socklist[osock].flags = SOCK_UNUSED;
72     }
73    
74     int expmem_dccutil()
75     {
76     int tot, i;
77    
78 fabian 1.9 Context;
79 segfault 1.1 tot = sizeof(struct dcc_t) * max_dcc + sizeof(sock_list) * MAXSOCKS;
80    
81     for (i = 0; i < dcc_total; i++) {
82     if (dcc[i].type && dcc[i].type->expmem)
83     tot += dcc[i].type->expmem(dcc[i].u.other);
84     }
85     return tot;
86     }
87    
88     static char SBUF[1024];
89    
90     /* replace \n with \r\n */
91     char *add_cr(char *buf)
92     {
93     static char WBUF[1024];
94     char *p, *q;
95    
96     for (p = buf, q = WBUF; *p; p++, q++) {
97     if (*p == '\n')
98     *q++ = '\r';
99     *q = *p;
100     }
101     *q = *p;
102     return WBUF;
103     }
104    
105     extern void (*qserver) (int, char *, int);
106 fabian 1.7
107 fabian 1.5 void dprintf EGG_VARARGS_DEF(int, arg1)
108 segfault 1.1 {
109     char *format;
110     int idx, len;
111    
112     va_list va;
113 fabian 1.5 idx = EGG_VARARGS_START(int, arg1, va);
114 segfault 1.1 format = va_arg(va, char *);
115    
116     #ifdef HAVE_VSNPRINTF
117     if ((len = vsnprintf(SBUF, 1023, format, va)) < 0)
118     SBUF[len = 1023] = 0;
119     #else
120     len = vsprintf(SBUF, format, va);
121     #endif
122     va_end(va);
123     if (idx < 0) {
124     tputs(-idx, SBUF, len);
125     } else if (idx > 0x7FF0) {
126     switch (idx) {
127     case DP_LOG:
128     putlog(LOG_MISC, "*", "%s", SBUF);
129     break;
130     case DP_STDOUT:
131     tputs(STDOUT, SBUF, len);
132     break;
133     case DP_STDERR:
134     tputs(STDERR, SBUF, len);
135     break;
136     case DP_SERVER:
137     case DP_HELP:
138     case DP_MODE:
139 fabian 1.8 case DP_MODE_NEXT:
140     case DP_SERVER_NEXT:
141     case DP_HELP_NEXT:
142 segfault 1.1 qserver(idx, SBUF, len);
143     break;
144     }
145     return;
146     } else {
147     if (len > 500) { /* truncate to fit */
148     SBUF[500] = 0;
149     strcat(SBUF, "\n");
150     len = 501;
151     }
152     if (dcc[idx].type && ((long) (dcc[idx].type->output) == 1)) {
153     char *p = add_cr(SBUF);
154    
155     tputs(dcc[idx].sock, p, strlen(p));
156     } else if (dcc[idx].type && dcc[idx].type->output) {
157     dcc[idx].type->output(idx, SBUF, dcc[idx].u.other);
158     } else
159     tputs(dcc[idx].sock, SBUF, len);
160     }
161     }
162    
163 fabian 1.5 void chatout EGG_VARARGS_DEF(char *, arg1)
164 segfault 1.1 {
165     int i;
166     char *format;
167     char s[601];
168    
169     va_list va;
170 fabian 1.5 format = EGG_VARARGS_START(char *, arg1, va);
171 segfault 1.1
172     #ifdef HAVE_VSNPRINTF
173     if (vsnprintf(s, 511, format, va) < 0)
174     s[511] = 0;
175     #else
176     vsprintf(s, format, va);
177     #endif
178     for (i = 0; i < dcc_total; i++)
179     if (dcc[i].type == &DCC_CHAT)
180     if (dcc[i].u.chat->channel >= 0)
181     dprintf(i, "%s", s);
182     va_end(va);
183     }
184    
185     /* print to all on this channel but one */
186 fabian 1.5 void chanout_but EGG_VARARGS_DEF(int, arg1)
187 segfault 1.1 {
188     int i, x, chan;
189     char *format;
190     char s[601];
191    
192     va_list va;
193 fabian 1.5 x = EGG_VARARGS_START(int, arg1, va);
194 segfault 1.1 chan = va_arg(va, int);
195     format = va_arg(va, char *);
196    
197     #ifdef HAVE_VSNPRINTF
198     if (vsnprintf(s, 511, format, va) < 0)
199     s[511] = 0;
200     #else
201     vsprintf(s, format, va);
202     #endif
203     for (i = 0; i < dcc_total; i++)
204     if ((dcc[i].type == &DCC_CHAT) && (i != x))
205     if (dcc[i].u.chat->channel == chan)
206     dprintf(i, "%s", s);
207     va_end(va);
208     }
209    
210     void dcc_chatter(int idx)
211     {
212     int i, j;
213     struct flag_record fr =
214     {FR_GLOBAL | FR_CHAN | FR_ANYWH, 0, 0, 0, 0, 0};
215    
216     get_user_flagrec(dcc[idx].user, &fr, NULL);
217     dprintf(idx, "Connected to %s, running %s\n", botnetnick, version);
218     show_motd(idx);
219     dprintf(idx, "Commands start with '.' (like '.quit' or '.help')\n");
220     dprintf(idx, "Everything else goes out to the party line.\n\n");
221     i = dcc[idx].u.chat->channel;
222     dcc[idx].u.chat->channel = 234567;
223     j = dcc[idx].sock;
224     strcpy(dcc[idx].u.chat->con_chan, "***");
225     check_tcl_chon(dcc[idx].nick, dcc[idx].sock);
226     /* still there? */
227     if ((idx >= dcc_total) || (dcc[idx].sock != j))
228     return; /* nope */
229     /* tcl script may have taken control */
230     if (dcc[idx].type == &DCC_CHAT) {
231     if (!strcmp(dcc[idx].u.chat->con_chan, "***"))
232     strcpy(dcc[idx].u.chat->con_chan, "*");
233     if (dcc[idx].u.chat->channel == 234567) {
234     /* if the chat channel has already been altered it's *highly*
235     * probably join/part messages have been broadcast everywhere,
236     * so dont bother sending them */
237     if (i == -2)
238     i = 0;
239     dcc[idx].u.chat->channel = i;
240     if (dcc[idx].u.chat->channel >= 0) {
241 fabian 1.9 Context;
242 segfault 1.1 if (dcc[idx].u.chat->channel < 100000) {
243     botnet_send_join_idx(idx, -1);
244     }
245     }
246     check_tcl_chjn(botnetnick, dcc[idx].nick, dcc[idx].u.chat->channel,
247     geticon(idx), dcc[idx].sock, dcc[idx].host);
248     }
249     /* but *do* bother with sending it locally */
250     if (dcc[idx].u.chat->channel == 0) {
251     chanout_but(-1, 0, "*** %s joined the party line.\n", dcc[idx].nick);
252     } else if (dcc[idx].u.chat->channel > 0) {
253     chanout_but(-1, dcc[idx].u.chat->channel,
254     "*** %s joined the channel.\n", dcc[idx].nick);
255     }
256     }
257     }
258    
259 fabian 1.14 /* Mark an entry as lost and deconstruct it's contents. It will be securely
260     * removed from the dcc list in the main loop.
261     */
262 segfault 1.1 void lostdcc(int n)
263     {
264 fabian 1.14 if (dcc[n].type && dcc[n].type->kill)
265     dcc[n].type->kill(n, dcc[n].u.other);
266     else if (dcc[n].u.other)
267     nfree(dcc[n].u.other);
268     bzero(&dcc[n], sizeof(struct dcc_t));
269    
270     dcc[n].sock = (-1);
271 fabian 1.11 dcc[n].type = &DCC_LOST;
272     }
273    
274     /* Remove entry from dcc list. Think twice before using this function,
275     * because it invalidates any variables that point to a specific dcc
276     * entry!
277     */
278     void removedcc(int n)
279     {
280 segfault 1.1 if (dcc[n].type && dcc[n].type->kill)
281     dcc[n].type->kill(n, dcc[n].u.other);
282     else if (dcc[n].u.other)
283     nfree(dcc[n].u.other);
284     dcc_total--;
285     if (n < dcc_total)
286     my_memcpy((char *) &dcc[n], (char *) &dcc[dcc_total],
287     sizeof(struct dcc_t));
288     else
289     bzero(&dcc[n], sizeof(struct dcc_t)); /* drummer */
290 fabian 1.12 }
291    
292     /* Clean up sockets that were just left for dead.
293     */
294     void dcc_remove_lost(void)
295     {
296     int i;
297    
298     Context;
299     for (i = 0; i < dcc_total; i++) {
300     if (dcc[i].type == &DCC_LOST) {
301 fabian 1.14 dcc[i].type = NULL;
302 fabian 1.12 dcc[i].sock = (-1);
303     removedcc(i);
304     i--;
305     }
306     }
307 segfault 1.1 }
308    
309     /* show list of current dcc's to a dcc-chatter */
310     /* positive value: idx given -- negative value: sock given */
311     void tell_dcc(int zidx)
312     {
313     int i, j, k;
314     char other[160];
315    
316 fabian 1.9 Context;
317 segfault 1.1 spaces[HANDLEN - 9] = 0;
318     dprintf(zidx, "SOCK ADDR PORT NICK %s HOST TYPE\n"
319     ,spaces);
320     dprintf(zidx, "---- -------- ----- ---------%s ----------------- ----\n"
321     ,spaces);
322     spaces[HANDLEN - 9] = ' ';
323     /* show server */
324     for (i = 0; i < dcc_total; i++) {
325     j = strlen(dcc[i].host);
326     if (j > 17)
327     j -= 17;
328     else
329     j = 0;
330     if (dcc[i].type && dcc[i].type->display)
331     dcc[i].type->display(i, other);
332     else {
333     sprintf(other, "?:%lX !! ERROR !!", (long) dcc[i].type);
334     break;
335     }
336     k = HANDLEN - strlen(dcc[i].nick);
337     spaces[k] = 0;
338 fabian 1.14 dprintf(zidx, "%-4d %08X %5d %s%s %-17s %s\n", dcc[i].sock, dcc[i].addr,
339 segfault 1.1 dcc[i].port, dcc[i].nick, spaces, dcc[i].host + j, other);
340     spaces[k] = ' ';
341     }
342     }
343    
344     /* mark someone on dcc chat as no longer away */
345     void not_away(int idx)
346     {
347 fabian 1.9 Context;
348 segfault 1.1 if (dcc[idx].u.chat->away == NULL) {
349     dprintf(idx, "You weren't away!\n");
350     return;
351     }
352     if (dcc[idx].u.chat->channel >= 0) {
353     chanout_but(-1, dcc[idx].u.chat->channel,
354     "*** %s is no longer away.\n", dcc[idx].nick);
355 fabian 1.9 Context;
356 segfault 1.1 if (dcc[idx].u.chat->channel < 100000) {
357     botnet_send_away(-1, botnetnick, dcc[idx].sock, NULL, idx);
358     }
359     }
360     dprintf(idx, "You're not away any more.\n");
361     nfree(dcc[idx].u.chat->away);
362     dcc[idx].u.chat->away = NULL;
363     check_tcl_away(botnetnick, dcc[idx].sock, NULL);
364     }
365    
366     void set_away(int idx, char *s)
367     {
368     if (s == NULL) {
369     not_away(idx);
370     return;
371     }
372     if (!s[0]) {
373     not_away(idx);
374     return;
375     }
376     if (dcc[idx].u.chat->away != NULL)
377     nfree(dcc[idx].u.chat->away);
378     dcc[idx].u.chat->away = (char *) nmalloc(strlen(s) + 1);
379     strcpy(dcc[idx].u.chat->away, s);
380     if (dcc[idx].u.chat->channel >= 0) {
381     chanout_but(-1, dcc[idx].u.chat->channel,
382     "*** %s is now away: %s\n", dcc[idx].nick, s);
383 fabian 1.9 Context;
384 segfault 1.1 if (dcc[idx].u.chat->channel < 100000) {
385     botnet_send_away(-1, botnetnick, dcc[idx].sock, s, idx);
386     }
387     }
388     dprintf(idx, "You are now away.\n");
389     check_tcl_away(botnetnick, dcc[idx].sock, s);
390     }
391    
392     /* this helps the memory debugging */
393     void *_get_data_ptr(int size, char *file, int line)
394     {
395     char *p;
396    
397 fabian 1.9 #ifdef DEBUG_MEM
398 segfault 1.1 char x[1024];
399    
400     simple_sprintf(x, "dccutil.c:%s", file);
401     p = n_malloc(size, x, line);
402     #else
403     p = nmalloc(size);
404     #endif
405     bzero(p, size);
406     return p;
407     }
408    
409     /* make a password, 10-15 random letters and digits */
410     void makepass(char *s)
411     {
412 fabian 1.2 int i;
413 segfault 1.1
414     i = 10 + (random() % 6);
415 fabian 1.2 make_rand_str(s, i);
416 segfault 1.1 }
417    
418     void flush_lines(int idx, struct chat_info *ci)
419     {
420     int c = ci->line_count;
421     struct msgq *p = ci->buffer, *o;
422    
423     while (p && c < (ci->max_line)) {
424     ci->current_lines--;
425     tputs(dcc[idx].sock, p->msg, p->len);
426     nfree(p->msg);
427     o = p->next;
428     nfree(p);
429     p = o;
430     c++;
431     }
432     if (p != NULL) {
433     if (dcc[idx].status & STAT_TELNET)
434     tputs(dcc[idx].sock, "[More]: ", 8);
435     else
436     tputs(dcc[idx].sock, "[More]\n", 7);
437     }
438     ci->buffer = p;
439     ci->line_count = 0;
440     }
441    
442     int new_dcc(struct dcc_table *type, int xtra_size)
443     {
444     int i = dcc_total;
445    
446     if (dcc_total == max_dcc)
447     return -1;
448     dcc_total++;
449     bzero((char *) &dcc[i], sizeof(struct dcc_t));
450    
451     dcc[i].type = type;
452     if (xtra_size) {
453     dcc[i].u.other = nmalloc(xtra_size);
454     bzero(dcc[i].u.other, xtra_size);
455     }
456     return i;
457    
458     }
459    
460 fabian 1.3 /* Changes the given dcc entry to another type */
461     void changeover_dcc(int i, struct dcc_table *type, int xtra_size)
462     {
463     /* free old structure */
464     if (dcc[i].type && dcc[i].type->kill)
465     dcc[i].type->kill(i, dcc[i].u.other);
466     else if (dcc[i].u.other) {
467     nfree(dcc[i].u.other);
468     dcc[i].u.other = NULL;
469     }
470    
471     dcc[i].type = type;
472     if (xtra_size) {
473     dcc[i].u.other = nmalloc(xtra_size);
474     bzero(dcc[i].u.other, xtra_size);
475     }
476     }
477    
478 segfault 1.1 int detect_dcc_flood(time_t * timer, struct chat_info *chat, int idx)
479     {
480     time_t t;
481    
482     if (dcc_flood_thr == 0)
483     return 0;
484     t = now;
485     if (*timer != t) {
486     *timer = t;
487     chat->msgs_per_sec = 0;
488     } else {
489     chat->msgs_per_sec++;
490     if (chat->msgs_per_sec > dcc_flood_thr) {
491     /* FLOOD */
492     dprintf(idx, "*** FLOOD: %s.\n", IRC_GOODBYE);
493     /* evil assumption here that flags&DCT_CHAT implies chat type */
494     if ((dcc[idx].type->flags & DCT_CHAT) && chat &&
495     (chat->channel >= 0)) {
496     char x[1024];
497    
498     simple_sprintf(x, DCC_FLOODBOOT, dcc[idx].nick);
499     chanout_but(idx, chat->channel, "*** %s", x);
500     if (chat->channel < 100000)
501     botnet_send_part_idx(idx, x);
502     }
503     check_tcl_chof(dcc[idx].nick, dcc[idx].sock);
504     if ((dcc[idx].sock != STDOUT) || backgrd) {
505     killsock(dcc[idx].sock);
506     lostdcc(idx);
507     } else {
508     dprintf(DP_STDOUT, "\n### SIMULATION RESET ###\n\n");
509     dcc_chatter(idx);
510     }
511     return 1; /* <- flood */
512     }
513     }
514     return 0;
515     }
516    
517     /* handle someone being booted from dcc chat */
518     void do_boot(int idx, char *by, char *reason)
519     {
520     int files = (dcc[idx].type != &DCC_CHAT);
521    
522     dprintf(idx, DCC_BOOTED1);
523     dprintf(idx, DCC_BOOTED2, DCC_BOOTED2_ARGS);
524     /* if it's a partyliner (chatterer :) */
525     /* horrible assumption that DCT_CHAT using structure uses same format
526     * as DCC_CHAT */
527     if ((dcc[idx].type->flags & DCT_CHAT) &&
528     (dcc[idx].u.chat->channel >= 0)) {
529     char x[1024];
530    
531     simple_sprintf(x, "%s booted %s from the party line%s%s",
532     by, dcc[idx].nick, reason[0] ? ": " : "", reason);
533     chanout_but(idx, dcc[idx].u.chat->channel, "*** %s.\n", x);
534     if (dcc[idx].u.chat->channel < 100000)
535     botnet_send_part_idx(idx, x);
536     }
537     check_tcl_chof(dcc[idx].nick, dcc[idx].sock);
538     if ((dcc[idx].sock != STDOUT) || backgrd) {
539     killsock(dcc[idx].sock);
540 fabian 1.11 lostdcc(idx);
541 segfault 1.1 /* entry must remain in the table so it can be logged by the caller */
542     } else {
543     dprintf(DP_STDOUT, "\n### SIMULATION RESET\n\n");
544     dcc_chatter(idx);
545     }
546     return;
547     }

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