| 1 |
/* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
|
| 2 |
|
| 3 |
Mixmaster may be redistributed and modified under certain conditions.
|
| 4 |
This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
|
| 5 |
ANY KIND, either express or implied. See the file COPYRIGHT for
|
| 6 |
details.
|
| 7 |
|
| 8 |
Send messages from pool
|
| 9 |
$Id: pool.c,v 1.10.2.2 2002/10/09 20:29:44 weaselp Exp $ */
|
| 10 |
|
| 11 |
#include "mix3.h"
|
| 12 |
#include <stdlib.h>
|
| 13 |
#include <string.h>
|
| 14 |
#include <ctype.h>
|
| 15 |
#include <sys/types.h>
|
| 16 |
#include <time.h>
|
| 17 |
#ifdef POSIX
|
| 18 |
#include <unistd.h>
|
| 19 |
#else /* end of POSIX */
|
| 20 |
#include <io.h>
|
| 21 |
#endif /* else if not POSIX */
|
| 22 |
#ifndef _MSC
|
| 23 |
#include <dirent.h>
|
| 24 |
#endif /* not _MSC */
|
| 25 |
#include <assert.h>
|
| 26 |
|
| 27 |
#ifdef USE_PCRE
|
| 28 |
#include "pcre.h"
|
| 29 |
#endif /* USE_PCRE */
|
| 30 |
|
| 31 |
int msg_send(char *name);
|
| 32 |
|
| 33 |
int mix_send(void)
|
| 34 |
{
|
| 35 |
return (mix_regular(FORCE_POOL));
|
| 36 |
}
|
| 37 |
|
| 38 |
/* Message pool: Unix DOS
|
| 39 |
* latent messages: l* *.lat
|
| 40 |
* pooled messages: m* *.msg
|
| 41 |
* messages to be sent: s* *.snd
|
| 42 |
* temporary files: t* *.tmp
|
| 43 |
* files in user editor: x*
|
| 44 |
* incoming mail: i* *.inf
|
| 45 |
* partial messages: p* p*.*
|
| 46 |
* error messages: e* *.err
|
| 47 |
* outgoing messages: out *.txt (to be used by external program)
|
| 48 |
*/
|
| 49 |
|
| 50 |
static int is(char *path, char *type)
|
| 51 |
{
|
| 52 |
#ifdef SHORTNAMES
|
| 53 |
int s;
|
| 54 |
|
| 55 |
s = strlen(path);
|
| 56 |
if (s <= 4)
|
| 57 |
return 0;
|
| 58 |
return (path[s - 4] == '.' && streq(path + s - 3, type));
|
| 59 |
#else /* end of SHORTNAMES */
|
| 60 |
return (path[0] == type[0]);
|
| 61 |
#endif /* else if not SHORTNAMES */
|
| 62 |
}
|
| 63 |
|
| 64 |
static void mv(char *name, char *newtype)
|
| 65 |
{
|
| 66 |
char old[PATHMAX], new[PATHMAX];
|
| 67 |
|
| 68 |
sprintf(old, "%s%c%s", POOLDIR, DIRSEP, name);
|
| 69 |
#ifdef SHORTNAMES
|
| 70 |
assert(strlen(name) > 4);
|
| 71 |
strcpy(name + strlen(name) - 3, newtype);
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| 72 |
#else /* end of SHORTNAMES */
|
| 73 |
name[0] = newtype[0];
|
| 74 |
#endif /* else if not SHORTNAMES */
|
| 75 |
sprintf(new, "%s%c%s", POOLDIR, DIRSEP, name);
|
| 76 |
rename(old, new);
|
| 77 |
}
|
| 78 |
|
| 79 |
int latent_read(void)
|
| 80 |
{
|
| 81 |
char path[PATHMAX];
|
| 82 |
DIR *d;
|
| 83 |
FILE *f;
|
| 84 |
struct dirent *e;
|
| 85 |
int size = 0;
|
| 86 |
long now, then;
|
| 87 |
|
| 88 |
now = time(NULL);
|
| 89 |
d = opendir(POOLDIR);
|
| 90 |
if (d != NULL)
|
| 91 |
for (;;) {
|
| 92 |
e = readdir(d);
|
| 93 |
if (e == NULL)
|
| 94 |
break;
|
| 95 |
if (is(e->d_name, "lat")) {
|
| 96 |
sprintf(path, "%s%c%s", POOLDIR, DIRSEP, e->d_name);
|
| 97 |
f = fopen(path, "rb");
|
| 98 |
if (f != NULL) {
|
| 99 |
fscanf(f, "%*d %ld\n", &then);
|
| 100 |
fclose(f);
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| 101 |
if (now > then)
|
| 102 |
mv(e->d_name, "msg");
|
| 103 |
}
|
| 104 |
}
|
| 105 |
}
|
| 106 |
closedir(d);
|
| 107 |
return (size);
|
| 108 |
}
|
| 109 |
|
| 110 |
int infile_read(void)
|
| 111 |
{
|
| 112 |
char path[PATHMAX];
|
| 113 |
BUFFER *msg;
|
| 114 |
DIR *d;
|
| 115 |
FILE *f;
|
| 116 |
struct dirent *e;
|
| 117 |
int size = 0;
|
| 118 |
|
| 119 |
msg = buf_new();
|
| 120 |
d = opendir(POOLDIR);
|
| 121 |
if (d != NULL)
|
| 122 |
for (;;) {
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| 123 |
e = readdir(d);
|
| 124 |
if (e == NULL)
|
| 125 |
break;
|
| 126 |
if (is(e->d_name, "inf")) {
|
| 127 |
mv(e->d_name, "tmp");
|
| 128 |
sprintf(path, "%s%c%s", POOLDIR, DIRSEP, e->d_name);
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| 129 |
f = fopen(path, "rb");
|
| 130 |
if (f != NULL) {
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| 131 |
buf_clear(msg);
|
| 132 |
buf_read(msg, f);
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| 133 |
fclose(f);
|
| 134 |
unlink(path);
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| 135 |
mix_decrypt(msg);
|
| 136 |
}
|
| 137 |
}
|
| 138 |
}
|
| 139 |
closedir(d);
|
| 140 |
buf_free(msg);
|
| 141 |
return (size);
|
| 142 |
}
|
| 143 |
|
| 144 |
int pool_add(BUFFER *msg, char *type)
|
| 145 |
{
|
| 146 |
char path[PATHMAX], pathtmp[PATHMAX];
|
| 147 |
FILE *f;
|
| 148 |
int err = -1;
|
| 149 |
|
| 150 |
f = pool_new(type, pathtmp, path);
|
| 151 |
if (f != NULL) {
|
| 152 |
err = buf_write(msg, f);
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| 153 |
fclose(f);
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| 154 |
}
|
| 155 |
if (err == 0) {
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| 156 |
rename(pathtmp, path);
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| 157 |
errlog(DEBUGINFO, "Added %s file to pool.\n", type);
|
| 158 |
}
|
| 159 |
return (err);
|
| 160 |
|
| 161 |
}
|
| 162 |
|
| 163 |
FILE *pool_new(char *type, char *tmpname, char *path)
|
| 164 |
{
|
| 165 |
FILE *f;
|
| 166 |
|
| 167 |
assert(strlen(type) == 3);
|
| 168 |
#ifdef SHORTNAMES
|
| 169 |
sprintf(tmpname, "%s%c%02x%02x%02x%02x.tmp", POOLDIR, DIRSEP, rnd_byte(), rnd_byte(),
|
| 170 |
rnd_byte(), rnd_byte());
|
| 171 |
strcpy(path, tmpname);
|
| 172 |
memcpy(path + strlen(path) - 3, type, 3);
|
| 173 |
#else /* end of SHORTNAMES */
|
| 174 |
sprintf(tmpname, "%s%ct%02x%02x%02x%02x%02x%02x%01x", POOLDIR, DIRSEP, rnd_byte(),
|
| 175 |
rnd_byte(), rnd_byte(), rnd_byte(), rnd_byte(),
|
| 176 |
rnd_byte(), rnd_byte() & 15);
|
| 177 |
strcpy(path, tmpname);
|
| 178 |
strrchr(path, DIRSEP)[1] = type[0];
|
| 179 |
#endif /* else if not SHORTNAMES */
|
| 180 |
f = fopen(tmpname, "wb");
|
| 181 |
if (f == NULL)
|
| 182 |
errlog(ERRORMSG, "Error creating temporary file %s\n", tmpname);
|
| 183 |
return (f);
|
| 184 |
}
|
| 185 |
|
| 186 |
int pool_read(BUFFER *pool)
|
| 187 |
{
|
| 188 |
DIR *d;
|
| 189 |
struct dirent *e;
|
| 190 |
int size = 0;
|
| 191 |
|
| 192 |
d = opendir(POOLDIR);
|
| 193 |
if (d != NULL)
|
| 194 |
for (;;) {
|
| 195 |
e = readdir(d);
|
| 196 |
if (e == NULL)
|
| 197 |
break;
|
| 198 |
if (is(e->d_name, "msg")) {
|
| 199 |
if (pool != NULL) {
|
| 200 |
buf_appends(pool, e->d_name);
|
| 201 |
buf_appendc(pool, 0);
|
| 202 |
}
|
| 203 |
size++;
|
| 204 |
}
|
| 205 |
}
|
| 206 |
closedir(d);
|
| 207 |
return (size);
|
| 208 |
}
|
| 209 |
|
| 210 |
void pool_dosend(void)
|
| 211 |
{
|
| 212 |
DIR *d;
|
| 213 |
struct dirent *e;
|
| 214 |
char path[PATHMAX];
|
| 215 |
|
| 216 |
d = opendir(POOLDIR);
|
| 217 |
if (d != NULL) {
|
| 218 |
for (;;) {
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| 219 |
e = readdir(d);
|
| 220 |
if (e == NULL)
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| 221 |
break;
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| 222 |
if (is(e->d_name, "snd")) {
|
| 223 |
sendmail_begin();
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| 224 |
mv(e->d_name, "tmp");
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| 225 |
sprintf(path, "%s%c%s", POOLDIR, DIRSEP, e->d_name);
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| 226 |
if (msg_send(path) == 1)
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| 227 |
mv(e->d_name, "err");
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| 228 |
}
|
| 229 |
}
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| 230 |
closedir(d);
|
| 231 |
}
|
| 232 |
sendmail_end();
|
| 233 |
}
|
| 234 |
|
| 235 |
int pool_send(void)
|
| 236 |
{
|
| 237 |
int size, max, i, r;
|
| 238 |
BUFFER *pool;
|
| 239 |
long int *ptr;
|
| 240 |
|
| 241 |
infile_read();
|
| 242 |
latent_read();
|
| 243 |
pool = buf_new();
|
| 244 |
size = pool_read(pool);
|
| 245 |
if (size <= POOLSIZE)
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| 246 |
goto end;
|
| 247 |
|
| 248 |
ptr = malloc(size * sizeof(long int));
|
| 249 |
|
| 250 |
if (ptr == NULL)
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| 251 |
goto end;
|
| 252 |
for (i = 0; i < size; i++) {
|
| 253 |
ptr[i] = pool->ptr;
|
| 254 |
buf_getline(pool, NULL);
|
| 255 |
}
|
| 256 |
|
| 257 |
max = size * RATE / 100; /* send no more than RATE % of the messages */
|
| 258 |
if (max < 0)
|
| 259 |
max = 1;
|
| 260 |
|
| 261 |
for (i = 0; i < size - POOLSIZE && i < max; i++) {
|
| 262 |
do
|
| 263 |
r = rnd_number(size); /* chose a new random message */
|
| 264 |
while (is(pool->data + ptr[r], "snd"));
|
| 265 |
mv(pool->data + ptr[r], "snd");
|
| 266 |
}
|
| 267 |
stats_out(size - --i);
|
| 268 |
pool_dosend();
|
| 269 |
free(ptr);
|
| 270 |
|
| 271 |
end:
|
| 272 |
buf_free(pool);
|
| 273 |
return (size);
|
| 274 |
}
|
| 275 |
|
| 276 |
int msg_send(char *name)
|
| 277 |
{
|
| 278 |
FILE *f;
|
| 279 |
int type = -1;
|
| 280 |
BUFFER *m, *addr;
|
| 281 |
int err = 0;
|
| 282 |
char line[LINELEN];
|
| 283 |
int userfrom = 0;
|
| 284 |
|
| 285 |
m = buf_new();
|
| 286 |
addr = buf_new();
|
| 287 |
if ((f = fopen(name, "rb")) == NULL) {
|
| 288 |
err = -1;
|
| 289 |
goto end;
|
| 290 |
}
|
| 291 |
fscanf(f, "%d %*d\n", &type);
|
| 292 |
if (type == INTERMEDIATE) {
|
| 293 |
fgets(line, sizeof(line), f);
|
| 294 |
buf_sets(addr, line);
|
| 295 |
buf_chop(addr);
|
| 296 |
err = buf_read(m, f);
|
| 297 |
if (err == -1)
|
| 298 |
goto end;
|
| 299 |
err = mix_armor(m);
|
| 300 |
if (err == -1)
|
| 301 |
goto end;
|
| 302 |
err = sendmail(m, REMAILERADDR, addr);
|
| 303 |
} else if (type == MSG_MAIL || type == MSG_POST) {
|
| 304 |
err = buf_read(m, f);
|
| 305 |
if (err == -1)
|
| 306 |
goto end;
|
| 307 |
if (MIDDLEMAN && ! allowmessage(m))
|
| 308 |
mix2_encrypt(type, m, FORWARDTO, 1, NULL);
|
| 309 |
else {
|
| 310 |
err = filtermsg(m);
|
| 311 |
if (err == 1)
|
| 312 |
userfrom = 1, err = 0;
|
| 313 |
if (err != -1) {
|
| 314 |
/* message has recipients */
|
| 315 |
errlog(DEBUGINFO, "Sending message (%ld bytes)\n", m->length);
|
| 316 |
|
| 317 |
if (type == MSG_MAIL)
|
| 318 |
err = sendmail(m, userfrom ? NULL : ANONNAME, NULL);
|
| 319 |
else if (type == MSG_POST) {
|
| 320 |
if (strchr(NEWS, '@') && !strchr(NEWS, ' ')) {
|
| 321 |
errlog(LOG, "Mailing article to %s.\n", NEWS);
|
| 322 |
buf_sets(addr, NEWS);
|
| 323 |
err = sendmail(m, userfrom ? NULL : ANONNAME, addr);
|
| 324 |
} else if (NEWS[0] != '\0') {
|
| 325 |
FILE *f;
|
| 326 |
|
| 327 |
f = openpipe(NEWS);
|
| 328 |
if (f == NULL)
|
| 329 |
goto end;
|
| 330 |
errlog(LOG, "Posting article.\n");
|
| 331 |
if (!userfrom)
|
| 332 |
fprintf(f, "From: %s\n", ANONNAME);
|
| 333 |
if (ORGANIZATION[0] != '\0')
|
| 334 |
fprintf(f, "Organization: %s\n", ORGANIZATION);
|
| 335 |
buf_write(m, f);
|
| 336 |
closepipe(f);
|
| 337 |
} else
|
| 338 |
errlog(NOTICE, "Rejecting news article.\n");
|
| 339 |
}
|
| 340 |
} else
|
| 341 |
errlog(ERRORMSG, "Bad message file.\n");
|
| 342 |
}
|
| 343 |
}
|
| 344 |
end:
|
| 345 |
if (f != NULL)
|
| 346 |
fclose(f);
|
| 347 |
if (err != 1) /* problem sending mail */
|
| 348 |
unlink(name);
|
| 349 |
buf_free(m);
|
| 350 |
buf_free(addr);
|
| 351 |
return (err);
|
| 352 |
}
|
| 353 |
|
| 354 |
int allowmessage(BUFFER *in)
|
| 355 |
/* Only called if remailer is middleman. Checks whether all Recipient
|
| 356 |
* addresses are in dest.allow. If yes return 1; 0 otherwhise
|
| 357 |
*/
|
| 358 |
{
|
| 359 |
BUFFER *out, *allow, *line, *line2;
|
| 360 |
int err=1;
|
| 361 |
FILE *f;
|
| 362 |
|
| 363 |
allow = buf_new();
|
| 364 |
out = buf_new();
|
| 365 |
line = buf_new();
|
| 366 |
line2 = buf_new();
|
| 367 |
|
| 368 |
f = mix_openfile(DESTALLOW, "r");
|
| 369 |
if (f != NULL) {
|
| 370 |
buf_read(allow, f);
|
| 371 |
fclose(f);
|
| 372 |
}
|
| 373 |
|
| 374 |
/* Do header lines */
|
| 375 |
while (buf_getline(in, line) == 0) {
|
| 376 |
for (;;) {
|
| 377 |
buf_lookahead(in, line2);
|
| 378 |
if (!bufleft(line2, " ") && !bufleft(line2, "\t"))
|
| 379 |
break;
|
| 380 |
buf_getline(in, line2);
|
| 381 |
buf_cat(line, line2);
|
| 382 |
}
|
| 383 |
|
| 384 |
if (bufileft(line, "to:") || bufileft(line, "cc:") ||
|
| 385 |
bufileft(line, "bcc:") || bufileft(line, "newsgroups:"))
|
| 386 |
if (! doallow(line, allow))
|
| 387 |
err = 0;
|
| 388 |
|
| 389 |
if (line->length > 0) {
|
| 390 |
if (!buffind(line, ":"))
|
| 391 |
buf_appends(out, "X-Invalid: ");
|
| 392 |
buf_cat(out, line);
|
| 393 |
buf_nl(out);
|
| 394 |
}
|
| 395 |
}
|
| 396 |
buf_nl(out);
|
| 397 |
|
| 398 |
/* Rest of the message */
|
| 399 |
buf_append(out, in->data + in->ptr, in->length - in->ptr);
|
| 400 |
|
| 401 |
buf_move(in, out);
|
| 402 |
buf_free(out);
|
| 403 |
buf_free(allow);
|
| 404 |
buf_free(line);
|
| 405 |
buf_free(line2);
|
| 406 |
return (err);
|
| 407 |
}
|
| 408 |
|
| 409 |
int doallow(BUFFER *line, BUFFER *filter)
|
| 410 |
/* line is a To, CC or BCC line.
|
| 411 |
* problem is: there may be multiple addresses in one header
|
| 412 |
* line but we only want to allow if _all_ are allowed
|
| 413 |
*
|
| 414 |
* So to not send direct if we do not want, we _never_ send
|
| 415 |
* direct if there is more than one address: This is
|
| 416 |
* assumed to be the case when there is a
|
| 417 |
* comma in the header line.
|
| 418 |
*
|
| 419 |
* this should probably be rewritten somehwhen. therefore: FIXME
|
| 420 |
*
|
| 421 |
* returns: 1 if allowed
|
| 422 |
* 0 if message should be send indirectly
|
| 423 |
*/
|
| 424 |
{
|
| 425 |
if (strchr( line->data, ',')) return 0;
|
| 426 |
return doblock(line, filter, 0);
|
| 427 |
}
|
| 428 |
|
| 429 |
int filtermsg(BUFFER *in)
|
| 430 |
{
|
| 431 |
BUFFER *out, *line, *line2, *mboundary, *block, *filter, *mid;
|
| 432 |
FILE *f;
|
| 433 |
int from = 0, dest = 0;
|
| 434 |
int inbinary = 0, inpgp = 0, l = 80;
|
| 435 |
int err = -1;
|
| 436 |
|
| 437 |
line = buf_new();
|
| 438 |
line2 = buf_new();
|
| 439 |
filter = buf_new();
|
| 440 |
mid = buf_new();
|
| 441 |
mboundary = buf_new();
|
| 442 |
out = buf_new();
|
| 443 |
block = NULL;
|
| 444 |
|
| 445 |
if (SIZELIMIT > 0 && in->length > SIZELIMIT * 1024) {
|
| 446 |
errlog(NOTICE, "Message rejected: %ld bytes\n", in->length);
|
| 447 |
goto end;
|
| 448 |
}
|
| 449 |
|
| 450 |
block = readdestblk( );
|
| 451 |
if ( !block ) block = buf_new( );
|
| 452 |
|
| 453 |
f = mix_openfile(HDRFILTER, "r");
|
| 454 |
if (f != NULL) {
|
| 455 |
buf_read(filter, f);
|
| 456 |
fclose(f);
|
| 457 |
}
|
| 458 |
|
| 459 |
f = mix_openfile(DISCLAIMFILE, "r");
|
| 460 |
if (f != NULL) {
|
| 461 |
buf_read(out, f);
|
| 462 |
fclose(f);
|
| 463 |
} else {
|
| 464 |
if (strfind(DISCLAIMER, "%s"))
|
| 465 |
buf_appendf(out, DISCLAIMER, COMPLAINTS);
|
| 466 |
else
|
| 467 |
buf_appends(out, DISCLAIMER);
|
| 468 |
}
|
| 469 |
|
| 470 |
while (buf_getline(in, line) == 0) {
|
| 471 |
for (;;) {
|
| 472 |
buf_lookahead(in, line2);
|
| 473 |
if (!bufleft(line2, " ") && !bufleft(line2, "\t"))
|
| 474 |
break;
|
| 475 |
buf_getline(in, line2);
|
| 476 |
buf_cat(line, line2);
|
| 477 |
}
|
| 478 |
|
| 479 |
if (bufileft(line, "to:") || bufileft(line, "cc:") ||
|
| 480 |
bufileft(line, "bcc:") || bufileft(line, "newsgroups:"))
|
| 481 |
if (doblock(line, block, 1) == 0)
|
| 482 |
dest++;
|
| 483 |
if (doblock(line, filter, 1) == -1)
|
| 484 |
goto end;
|
| 485 |
if (bufileft(line, "from:"))
|
| 486 |
from = 1;
|
| 487 |
|
| 488 |
if (bufileft(line, "content-type:") && bufileft(line, "multipart"))
|
| 489 |
get_parameter(line, "boundary", mboundary);
|
| 490 |
|
| 491 |
if (line->length > 0) {
|
| 492 |
if (!buffind(line, ":"))
|
| 493 |
buf_appends(out, "X-Invalid: ");
|
| 494 |
buf_cat(out, line);
|
| 495 |
buf_nl(out);
|
| 496 |
}
|
| 497 |
}
|
| 498 |
|
| 499 |
if (MID[0] != '\0' && tolower(MID[0]) != 'n') {
|
| 500 |
char txt[LINELEN];
|
| 501 |
|
| 502 |
digestmem_md5(in->data + in->ptr, in->length - in->ptr, mid);
|
| 503 |
id_encode(mid->data, txt);
|
| 504 |
|
| 505 |
if (MID[0] == '@')
|
| 506 |
strcatn(txt, MID, sizeof(txt));
|
| 507 |
else {
|
| 508 |
if (strchr(REMAILERADDR, '@'))
|
| 509 |
strcatn(txt, strchr(REMAILERADDR, '@'), sizeof(txt));
|
| 510 |
else if (strchr(COMPLAINTS, '@'))
|
| 511 |
strcatn(txt, strchr(COMPLAINTS, '@'), sizeof(txt));
|
| 512 |
}
|
| 513 |
buf_appendf(out, "Message-ID: <%s>\n", txt);
|
| 514 |
}
|
| 515 |
buf_nl(out);
|
| 516 |
|
| 517 |
if (from) {
|
| 518 |
/* prepend Sender line to message header */
|
| 519 |
buf_setf(line, "Sender: %s\n", ANONNAME);
|
| 520 |
buf_cat(line, out);
|
| 521 |
buf_move(out, line);
|
| 522 |
|
| 523 |
f = mix_openfile(FROMDSCLFILE, "r");
|
| 524 |
if (f != NULL) {
|
| 525 |
buf_read(out, f);
|
| 526 |
fclose(f);
|
| 527 |
} else
|
| 528 |
buf_appends(out, FROMDISCLAIMER);
|
| 529 |
}
|
| 530 |
|
| 531 |
#if 0
|
| 532 |
buf_append(out, in->data + in->ptr, in->length - in->ptr);
|
| 533 |
#endif /* 0 */
|
| 534 |
while (buf_getline(in, line) != -1) {
|
| 535 |
if (boundary(line, mboundary)) {
|
| 536 |
buf_cat(out, line);
|
| 537 |
buf_nl(out);
|
| 538 |
while (buf_getline(in, line) == 0) { /* MIME body part header */
|
| 539 |
err = doblock(line, filter, 1);
|
| 540 |
if (err == -1)
|
| 541 |
goto end;
|
| 542 |
buf_cat(out, line);
|
| 543 |
buf_nl(out);
|
| 544 |
}
|
| 545 |
}
|
| 546 |
if (BINFILTER && l > 20 && line->length == l &&
|
| 547 |
(bufleft(line, "M") || !buffind(line, " ")))
|
| 548 |
inbinary++;
|
| 549 |
else
|
| 550 |
inbinary = 0, l = line->length;
|
| 551 |
if (bufileft(line, begin_pgp) || bufileft(line, begin_key))
|
| 552 |
inpgp = 1;
|
| 553 |
if (bufileft(line, end_pgp) || bufileft(line, end_key))
|
| 554 |
inpgp = 0;
|
| 555 |
if (inbinary < 10 || inpgp) {
|
| 556 |
buf_cat(out, line);
|
| 557 |
buf_nl(out);
|
| 558 |
} else if (inbinary == 10) {
|
| 559 |
errlog(NOTICE, "Binary message detected.\n");
|
| 560 |
if (BINFILTER > 1) {
|
| 561 |
err = -1;
|
| 562 |
goto end;
|
| 563 |
}
|
| 564 |
buf_appends(out, BINDISCLAIMER);
|
| 565 |
buf_nl(out);
|
| 566 |
}
|
| 567 |
}
|
| 568 |
|
| 569 |
f = mix_openfile(MSGFOOTERFILE, "r");
|
| 570 |
if (f != NULL) {
|
| 571 |
buf_read(out, f);
|
| 572 |
fclose(f);
|
| 573 |
} else
|
| 574 |
buf_appends(out, MSGFOOTER);
|
| 575 |
|
| 576 |
/* return 1 for user supplied From line */
|
| 577 |
err = from;
|
| 578 |
if (dest == 0)
|
| 579 |
err = -1;
|
| 580 |
|
| 581 |
end:
|
| 582 |
buf_move(in, out);
|
| 583 |
buf_free(out);
|
| 584 |
buf_free(line);
|
| 585 |
buf_free(line2);
|
| 586 |
if (block) buf_free(block);
|
| 587 |
buf_free(filter);
|
| 588 |
buf_free(mid);
|
| 589 |
buf_free(mboundary);
|
| 590 |
return (err);
|
| 591 |
}
|
| 592 |
|
| 593 |
BUFFER *readdestblk( )
|
| 594 |
{
|
| 595 |
char *destblklst = (char *)malloc( strlen( DESTBLOCK )+1 );
|
| 596 |
char *destblk = NULL;
|
| 597 |
FILE *f;
|
| 598 |
BUFFER *addresses;
|
| 599 |
BUFFER *temp;
|
| 600 |
int err = 1;
|
| 601 |
|
| 602 |
addresses = buf_new( );
|
| 603 |
temp = buf_new( );
|
| 604 |
|
| 605 |
strcpy( destblklst, DESTBLOCK );
|
| 606 |
|
| 607 |
while ( (destblk = strtok( destblk ? NULL : destblklst, " " )) )
|
| 608 |
{
|
| 609 |
if ( (f = mix_openfile( destblk, "r" )) )
|
| 610 |
{
|
| 611 |
if ( !buf_read( temp, f ) )
|
| 612 |
{
|
| 613 |
buf_cat( addresses, temp );
|
| 614 |
err = 0;
|
| 615 |
}
|
| 616 |
fclose( f );
|
| 617 |
}
|
| 618 |
}
|
| 619 |
|
| 620 |
free( destblklst );
|
| 621 |
buf_free( temp );
|
| 622 |
|
| 623 |
if ( err ) { buf_free( addresses ); return NULL; }
|
| 624 |
else return addresses;
|
| 625 |
}
|
| 626 |
|
| 627 |
int doblock(BUFFER *line, BUFFER *filter, int logandreset)
|
| 628 |
/* logandreset is usually 0
|
| 629 |
* it is only set to 1 when called from doallow
|
| 630 |
* which only checks whether messages are allowed to
|
| 631 |
* be sent directly
|
| 632 |
*/
|
| 633 |
{
|
| 634 |
int block = 0;
|
| 635 |
BUFFER *pattern, *result;
|
| 636 |
char *t;
|
| 637 |
#ifdef USE_PCRE
|
| 638 |
int errptr, match;
|
| 639 |
const char *error;
|
| 640 |
pcre *compiled;
|
| 641 |
int ovector[21];
|
| 642 |
char *newstr;
|
| 643 |
#endif /* USE_PCRE */
|
| 644 |
|
| 645 |
pattern = buf_new();
|
| 646 |
result = buf_new();
|
| 647 |
assert(filter != NULL);
|
| 648 |
|
| 649 |
buf_rewind(filter);
|
| 650 |
while (buf_getline(filter, pattern) != -1)
|
| 651 |
if (pattern->length > 0 && !bufleft(pattern, "#")) {
|
| 652 |
if (bufleft(pattern, "/") && (t = strchr(pattern->data + 1, '/'))
|
| 653 |
!= NULL) {
|
| 654 |
#ifdef USE_PCRE
|
| 655 |
*t = '\0';
|
| 656 |
compiled = pcre_compile(pattern->data + 1, PCRE_CASELESS,
|
| 657 |
&error, &errptr
|
| 658 |
#ifndef USE_PCRE_OLD
|
| 659 |
,NULL
|
| 660 |
#endif /* not USE_PCRE_OLD */
|
| 661 |
);
|
| 662 |
if (compiled) {
|
| 663 |
match = pcre_exec(compiled, NULL, line->data,
|
| 664 |
line->length,
|
| 665 |
#if (PCRE_MAJOR == 2 && PCRE_MINOR >= 06)
|
| 666 |
0,
|
| 667 |
#endif /* (PCRE_MAJOR == 2 && PCRE_MINOR >= 06) */
|
| 668 |
#if (PCRE_MAJOR >= 3)
|
| 669 |
0,
|
| 670 |
#endif /* (PCRE_MAJOR >= 3) */
|
| 671 |
0, ovector, sizeof(ovector) / sizeof(int));
|
| 672 |
free(compiled);
|
| 673 |
|
| 674 |
if (match < -1) {
|
| 675 |
*t = '/';
|
| 676 |
errlog(ERRORMSG, "Bad regexp %b\n", pattern);
|
| 677 |
}
|
| 678 |
else if (match >= 0) {
|
| 679 |
/* "/pattern/q" kills the entire message */
|
| 680 |
if (logandreset
|
| 681 |
&& strlen(pattern->data + 1) + 1 < pattern->length
|
| 682 |
&& pattern->data[pattern->length - 1] == 'q') {
|
| 683 |
*t = '/';
|
| 684 |
errlog(NOTICE,
|
| 685 |
"Message rejected: %b matches %b.\n", line, pattern);
|
| 686 |
block = -1;
|
| 687 |
break;
|
| 688 |
}
|
| 689 |
if (strlen(pattern->data + 1) + 1 < pattern->length
|
| 690 |
&& pattern->data[pattern->length - 1] == '/') {
|
| 691 |
pattern->data[pattern->length - 1] = '\0';
|
| 692 |
newstr = pattern->data + strlen(pattern->data) + 1;
|
| 693 |
buf_reset(result);
|
| 694 |
buf_append(result, line->data, ovector[0]);
|
| 695 |
while (strchr(newstr, '$')) {
|
| 696 |
strchr(newstr, '$')[0] = '\0';
|
| 697 |
buf_appends(result, newstr);
|
| 698 |
newstr += strlen(newstr) + 1;
|
| 699 |
if (*newstr >= '1' && *newstr <= '9')
|
| 700 |
buf_append(result, line->data +
|
| 701 |
ovector[2 * (*newstr - '0')],
|
| 702 |
ovector[2 * (*newstr - '0') + 1] -
|
| 703 |
ovector[2 * (*newstr - '0')]);
|
| 704 |
newstr++;
|
| 705 |
}
|
| 706 |
buf_appends(result, newstr);
|
| 707 |
buf_appends(result, line->data + ovector[1]);
|
| 708 |
buf_clear(line);
|
| 709 |
buf_appends(line, result->data);
|
| 710 |
} else {
|
| 711 |
block = 1;
|
| 712 |
*t = '/';
|
| 713 |
if (logandreset)
|
| 714 |
errlog(NOTICE, "Blocked header line: %b matches %b.\n",
|
| 715 |
line, pattern);
|
| 716 |
}
|
| 717 |
}
|
| 718 |
} else {
|
| 719 |
*t = '/';
|
| 720 |
errlog(ERRORMSG, "Bad regexp %b\n", pattern);
|
| 721 |
}
|
| 722 |
#else /* end of USE_PCRE */
|
| 723 |
errlog(ERRORMSG, "No regexp support! Ignoring %b\n", pattern);
|
| 724 |
#endif /* else if not USE_PCRE */
|
| 725 |
} else if (bufifind(line, pattern->data)) {
|
| 726 |
if (logandreset )
|
| 727 |
errlog(NOTICE, "Blocked header line: %b matches %b.\n",
|
| 728 |
line, pattern);
|
| 729 |
block = 1;
|
| 730 |
}
|
| 731 |
}
|
| 732 |
|
| 733 |
if (logandreset && (block == 1))
|
| 734 |
buf_reset(line);
|
| 735 |
|
| 736 |
buf_free(pattern);
|
| 737 |
buf_free(result);
|
| 738 |
return (block);
|
| 739 |
}
|
| 740 |
|
| 741 |
int mix_armor(BUFFER *in)
|
| 742 |
{
|
| 743 |
BUFFER *out, *md;
|
| 744 |
|
| 745 |
md = buf_new();
|
| 746 |
out = buf_new();
|
| 747 |
|
| 748 |
if (in->length != 20480)
|
| 749 |
return (-1);
|
| 750 |
|
| 751 |
buf_sets(out, "\n::\n");
|
| 752 |
buf_appends(out, remailer_type);
|
| 753 |
buf_appends(out, VERSION);
|
| 754 |
buf_nl(out);
|
| 755 |
buf_nl(out);
|
| 756 |
buf_appends(out, begin_remailer);
|
| 757 |
buf_nl(out);
|
| 758 |
buf_appends(out, "20480\n");
|
| 759 |
digest_md5(in, md);
|
| 760 |
encode(md, 0);
|
| 761 |
buf_cat(out, md);
|
| 762 |
buf_nl(out);
|
| 763 |
encode(in, 40);
|
| 764 |
buf_cat(out, in);
|
| 765 |
buf_appends(out, end_remailer);
|
| 766 |
buf_nl(out);
|
| 767 |
|
| 768 |
buf_move(in, out);
|
| 769 |
buf_free(out);
|
| 770 |
buf_free(md);
|
| 771 |
return (0);
|
| 772 |
}
|
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| 
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