citadel/netproc.c

   1 /*
   2  * Citadel/UX Intelligent Network Processor for IGnet/Open networks
   3  * See copyright.txt for copyright information
   4  * $Id$
   5  */
   6
   7 /* How long it takes for an old node to drop off the network map */
   8 #define EXPIRY_TIME     (2592000L)
   9
  10 /* How long we keep recently arrived messages in the use table */
  11 #define USE_TIME        (604800L)
  12
  13 /* Where do we keep our lock file? */
  14 #define LOCKFILE        "/var/lock/LCK.netproc"
  15
  16 /* Path to the 'uudecode' utility (needed for network file transfers) */
  17 #define UUDECODE        "/usr/bin/uudecode"
  18
  19 /* Uncomment the DEBUG def to see noisy traces */
  20 /* #define DEBUG 1 */
  21
  22
  23 #include "sysdep.h"
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <sys/wait.h>
  28 #include <string.h>
  29 #include <fcntl.h>
  30 #include <stdio.h>
  31 #include <ctype.h>
  32 #include <time.h>
  33 #include <signal.h>
  34 #include <errno.h>
  35 #include <syslog.h>
  36 #include <gdbm.h>
  37 #include "citadel.h"
  38 #include "tools.h"
  39
  40 /* A list of users you wish to filter out of incoming traffic can be kept
  41  * in ./network/filterlist -- messages from these users will be automatically
  42  * moved to FILTERROOM.  Normally this will be the same as TWITROOM (the
  43  * room problem user messages are moved to) but you can override this by
  44  * specifying a different room name here.
  45  */
  46 #ifndef FILTERROOM
  47 #define FILTERROOM TWITROOM
  48 #endif
  49
  50 struct msglist {
  51         struct msglist *next;
  52         long m_num;
  53         char m_rmname[ROOMNAMELEN];
  54 };
  55
  56 struct rmlist {
  57         struct rmlist *next;
  58         char rm_name[ROOMNAMELEN];
  59         long rm_lastsent;
  60 };
  61
  62 struct filterlist {
  63         struct filterlist *next;
  64         char f_person[64];
  65         char f_room[64];
  66         char f_system[64];
  67 };
  68
  69 struct syslist {
  70         struct syslist *next;
  71         char s_name[16];
  72         char s_type[4];
  73         char s_nexthop[128];
  74         time_t s_lastcontact;
  75         char s_humannode[64];
  76         char s_phonenum[32];
  77         char s_gdom[64];
  78 };
  79
  80
  81 void attach_to_server(int argc, char **argv);
  82 void serv_read(char *buf, int bytes);
  83 void serv_write(char *buf, int nbytes);
  84 void get_config(void);
  85
  86 struct filterlist *filter = NULL;
  87 struct syslist *slist = NULL;
  88
  89 struct config config;
  90 extern char bbs_home_directory[];
  91 extern int home_specified;
  92
  93
  94 #ifndef HAVE_STRERROR
  95 /*
  96  * replacement strerror() for systems that don't have it
  97  */
  98 char *strerror(int e)
  99 {
 100         static char buf[32];
 101
 102         sprintf(buf, "errno = %d", e);
 103         return (buf);
 104 }
 105 #endif
 106
 107
 108 void strip_trailing_whitespace(char *buf)
 109 {
 110         while (isspace(buf[strlen(buf) - 1]))
 111                 buf[strlen(buf) - 1] = 0;
 112 }
 113
 114
 115 /*
 116  * we also load the network/mail.sysinfo table into memory, make changes
 117  * as we learn more about the network from incoming messages, and write
 118  * the table back to disk when we're done.
 119  */
 120 int load_syslist(void)
 121 {
 122         FILE *fp;
 123         struct syslist *stemp;
 124         char insys = 0;
 125         char buf[128];
 126
 127         fp = fopen("network/mail.sysinfo", "r");
 128         if (fp == NULL)
 129                 return (1);
 130
 131         while (1) {
 132                 if (fgets(buf, 128, fp) == NULL) {
 133                         fclose(fp);
 134                         return (0);
 135                 }
 136                 buf[strlen(buf) - 1] = 0;
 137                 while (isspace(buf[0]))
 138                         strcpy(buf, &buf[1]);
 139                 if (buf[0] == '#')
 140                         buf[0] = 0;
 141                 if ((insys == 0) && (strlen(buf) != 0)) {
 142                         insys = 1;
 143                         stemp = (struct syslist *) malloc(sizeof(struct syslist));
 144                         stemp->next = slist;
 145                         slist = stemp;
 146                         strcpy(slist->s_name, buf);
 147                         strcpy(slist->s_type, "bin");
 148                         strcpy(slist->s_nexthop, "Mail");
 149                         slist->s_lastcontact = 0L;
 150                         strcpy(slist->s_humannode, "");
 151                         strcpy(slist->s_phonenum, "");
 152                         strcpy(slist->s_gdom, "");
 153                 } else if ((insys == 1) && (strlen(buf) == 0)) {
 154                         insys = 0;
 155                 } else if ((insys == 1) && (!strncasecmp(buf, "bin", 3))) {
 156                         strcpy(slist->s_type, "bin");
 157                         strcpy(slist->s_nexthop, &buf[4]);
 158                 } else if ((insys == 1) && (!strncasecmp(buf, "use", 3))) {
 159                         strcpy(slist->s_type, "use");
 160                         strcpy(slist->s_nexthop, &buf[4]);
 161                 } else if ((insys == 1) && (!strncasecmp(buf, "uum", 3))) {
 162                         strcpy(slist->s_type, "uum");
 163                         strcpy(slist->s_nexthop, &buf[4]);
 164                 } else if ((insys == 1) && (!strncasecmp(buf, "lastcontact", 11))) {
 165                         long foo;
 166                         sscanf(&buf[12], "%ld", &foo);
 167                         slist->s_lastcontact = foo;
 168                 } else if ((insys == 1) && (!strncasecmp(buf, "humannode", 9))) {
 169                         strcpy(slist->s_humannode, &buf[10]);
 170                 } else if ((insys == 1) && (!strncasecmp(buf, "phonenum", 8))) {
 171                         strcpy(slist->s_phonenum, &buf[9]);
 172                 } else if ((insys == 1) && (!strncasecmp(buf, "gdom", 4))) {
 173                         strcpy(slist->s_gdom, &buf[5]);
 174                 }
 175         }
 176 }
 177
 178 /* now we have to set up two "special" nodes on the list: one
 179  * for the local node, and one for an Internet gateway
 180  */
 181 void setup_special_nodes(void)
 182 {
 183         struct syslist *stemp, *slocal;
 184
 185         slocal = NULL;
 186         for (stemp = slist; stemp != NULL; stemp = stemp->next) {
 187                 if (!strcasecmp(stemp->s_name, config.c_nodename))
 188                         slocal = stemp;
 189         }
 190         if (slocal == NULL) {
 191                 slocal = (struct syslist *) malloc(sizeof(struct syslist));
 192                 slocal->next = slist;
 193                 slist = slocal;
 194         }
 195         strcpy(slocal->s_name, config.c_nodename);
 196         strcpy(slocal->s_type, "bin");
 197         strcpy(slocal->s_nexthop, "Mail");
 198         time(&slocal->s_lastcontact);
 199         strcpy(slocal->s_humannode, config.c_humannode);
 200         strcpy(slocal->s_phonenum, config.c_phonenum);
 201
 202         slocal = NULL;
 203         for (stemp = slist; stemp != NULL; stemp = stemp->next) {
 204                 if (!strcasecmp(stemp->s_name, "internet"))
 205                         slocal = stemp;
 206         }
 207         if (slocal == NULL) {
 208                 slocal = (struct syslist *) malloc(sizeof(struct syslist));
 209                 slocal->next = slist;
 210                 slist = slocal;
 211         }
 212         strcpy(slocal->s_name, "internet");
 213         strcpy(slocal->s_type, "uum");
 214         strcpy(slocal->s_nexthop, "%s");
 215         time(&slocal->s_lastcontact);
 216         strcpy(slocal->s_humannode, "Internet Gateway");
 217         strcpy(slocal->s_phonenum, "");
 218         strcpy(slocal->s_gdom, "");
 219
 220 }
 221
 222 /*
 223  * here's the routine to write the table back to disk.
 224  */
 225 void rewrite_syslist(void)
 226 {
 227         struct syslist *stemp;
 228         FILE *newfp;
 229         time_t now;
 230
 231         time(&now);
 232         newfp = fopen("network/mail.sysinfo", "w");
 233         for (stemp = slist; stemp != NULL; stemp = stemp->next) {
 234                 if (!strcasecmp(stemp->s_name, config.c_nodename)) {
 235                         time(&stemp->s_lastcontact);
 236                         strcpy(stemp->s_type, "bin");
 237                         strcpy(stemp->s_humannode, config.c_humannode);
 238                         strcpy(stemp->s_phonenum, config.c_phonenum);
 239                 }
 240                 /* remove systems we haven't heard from in a while */
 241                 if ((stemp->s_lastcontact == 0L)
 242                     || (now - stemp->s_lastcontact < EXPIRY_TIME)) {
 243                         fprintf(newfp, "%s\n%s %s\n",
 244                          stemp->s_name, stemp->s_type, stemp->s_nexthop);
 245                         if (strlen(stemp->s_phonenum) > 0)
 246                                 fprintf(newfp, "phonenum %s\n", stemp->s_phonenum);
 247                         if (strlen(stemp->s_gdom) > 0)
 248                                 fprintf(newfp, "gdom %s\n", stemp->s_gdom);
 249                         if (strlen(stemp->s_humannode) > 0)
 250                                 fprintf(newfp, "humannode %s\n", stemp->s_humannode);
 251                         if (stemp->s_lastcontact > 0L)
 252                                 fprintf(newfp, "lastcontact %ld %s",
 253                                         (long) stemp->s_lastcontact,
 254                                         asctime(localtime(&stemp->s_lastcontact)));
 255                         fprintf(newfp, "\n");
 256                 }
 257         }
 258         fclose(newfp);
 259         /* now free the list */
 260         while (slist != NULL) {
 261                 stemp = slist;
 262                 slist = slist->next;
 263                 free(stemp);
 264         }
 265 }
 266
 267
 268 /* call this function with the node name of a system and it returns a pointer
 269  * to its syslist structure.
 270  */
 271 struct syslist *get_sys_ptr(char *sysname)
 272 {
 273         static char sysnambuf[16];
 274         static struct syslist *sysptrbuf = NULL;
 275         struct syslist *stemp;
 276
 277         if ((!strcmp(sysname, sysnambuf))
 278             && (sysptrbuf != NULL))
 279                 return (sysptrbuf);
 280
 281         strcpy(sysnambuf, sysname);
 282         for (stemp = slist; stemp != NULL; stemp = stemp->next) {
 283                 if (!strcmp(sysname, stemp->s_name)) {
 284                         sysptrbuf = stemp;
 285                         return (stemp);
 286                 }
 287         }
 288         sysptrbuf = NULL;
 289         return (NULL);
 290 }
 291
 292
 293 /*
 294  * make sure only one copy of netproc runs at a time, using lock files
 295  */
 296 int set_lockfile(void)
 297 {
 298         FILE *lfp;
 299         int onppid;
 300
 301         if ((lfp = fopen(LOCKFILE, "r")) != NULL) {
 302                 fscanf(lfp, "%d", &onppid);
 303                 fclose(lfp);
 304                 if (!kill(onppid, 0) || errno == EPERM)
 305                         return 1;
 306         }
 307         lfp = fopen(LOCKFILE, "w");
 308         fprintf(lfp, "%ld\n", (long) getpid());
 309         fclose(lfp);
 310         return (0);
 311 }
 312
 313 void remove_lockfile(void)
 314 {
 315         unlink(LOCKFILE);
 316 }
 317
 318 /*
 319  * Why both cleanup() and nq_cleanup() ?  Notice the alarm() call in
 320  * cleanup() .  If for some reason netproc hangs waiting for the server
 321  * to clean up, the alarm clock goes off and the program exits anyway.
 322  * The cleanup() routine makes a check to ensure it's not reentering, in
 323  * case the ipc module looped it somehow.
 324  */
 325 void nq_cleanup(int e)
 326 {
 327         remove_lockfile();
 328         closelog();
 329         exit(e);
 330 }
 331
 332 void cleanup(int e)
 333 {
 334         static int nested = 0;
 335
 336         alarm(30);
 337         signal(SIGALRM, nq_cleanup);
 338         if (nested++ < 1)
 339                 serv_puts("QUIT");
 340         nq_cleanup(e);
 341 }
 342
 343 /*
 344  * This is implemented as a function rather than as a macro because the
 345  * client-side IPC modules expect logoff() to be defined.  They call logoff()
 346  * when a problem connecting or staying connected to the server occurs.
 347  */
 348 void logoff(int e)
 349 {
 350         cleanup(e);
 351 }
 352
 353 /*
 354  * If there is a kill file in place, this function will process it.
 355  */
 356 void load_filterlist(void)
 357 {
 358         FILE *fp;
 359         struct filterlist *fbuf;
 360         char sbuf[256];
 361         int a, p;
 362         fp = fopen("./network/filterlist", "r");
 363         if (fp == NULL)
 364                 return;
 365         while (fgets(sbuf, 256, fp) != NULL) {
 366                 if (sbuf[0] != '#') {
 367                         sbuf[strlen(sbuf) - 1] = 0;
 368                         fbuf = (struct filterlist *)
 369                             malloc((long) sizeof(struct filterlist));
 370                         fbuf->next = filter;
 371                         filter = fbuf;
 372                         strcpy(fbuf->f_person, "*");
 373                         strcpy(fbuf->f_room, "*");
 374                         strcpy(fbuf->f_system, "*");
 375                         p = (-1);
 376                         for (a = strlen(sbuf); a >= 0; --a)
 377                                 if (sbuf[a] == ',')
 378                                         p = a;
 379                         if (p >= 0) {
 380                                 sbuf[p] = 0;
 381                                 strcpy(fbuf->f_person, sbuf);
 382                                 strcpy(sbuf, &sbuf[p + 1]);
 383                         }
 384                         for (a = strlen(sbuf); a >= 0; --a)
 385                                 if (sbuf[a] == ',')
 386                                         p = a;
 387                         if (p >= 0) {
 388                                 sbuf[p] = 0;
 389                                 strcpy(fbuf->f_room, sbuf);
 390                                 strcpy(sbuf, &sbuf[p + 1]);
 391                         }
 392                         strcpy(fbuf->f_system, sbuf);
 393                 }
 394         }
 395         fclose(fp);
 396 }
 397
 398 /* returns 1 if user/message/room combination is in the kill file */
 399 int is_banned(char *k_person, char *k_room, char *k_system)
 400 {
 401         struct filterlist *fptr;
 402
 403         for (fptr = filter; fptr != NULL; fptr = fptr->next)
 404                 if (
 405                            ((!strcasecmp(fptr->f_person, k_person)) || (!strcmp(fptr->f_person, "*")))
 406                            &&
 407                            ((!strcasecmp(fptr->f_room, k_room)) || (!strcmp(fptr->f_room, "*")))
 408                            &&
 409                            ((!strcasecmp(fptr->f_system, k_system)) || (!strcmp(fptr->f_system, "*")))
 410                     )
 411                         return (1);
 412
 413         return (0);
 414 }
 415
 416 int get_sysinfo_type(char *name)
 417 {                               /* determine routing from sysinfo file */
 418         struct syslist *stemp;
 419       GETSN:for (stemp = slist; stemp != NULL; stemp = stemp->next) {
 420                 if (!strcasecmp(stemp->s_name, name)) {
 421                         if (!strcasecmp(stemp->s_type, "use")) {
 422                                 strcpy(name, stemp->s_nexthop);
 423                                 goto GETSN;
 424                         }
 425                         if (!strcasecmp(stemp->s_type, "bin")) {
 426                                 return (MES_BINARY);
 427                         }
 428                         if (!strcasecmp(stemp->s_type, "uum")) {
 429                                 return (MES_INTERNET);
 430                         }
 431                 }
 432         }
 433         syslog(LOG_ERR, "cannot find system '%s' in mail.sysinfo", name);
 434         return (-1);
 435 }
 436
 437
 438 void fpgetfield(FILE * fp, char *string)
 439 {
 440         int a, b;
 441
 442         strcpy(string, "");
 443         a = 0;
 444         do {
 445                 b = getc(fp);
 446                 if (b < 1) {
 447                         string[a] = 0;
 448                         return;
 449                 }
 450                 string[a] = b;
 451                 ++a;
 452         } while (b != 0);
 453 }
 454
 455
 456
 457 /*
 458  * Load all of the fields of a message, except the actual text, into a
 459  * table in memory (so we know how to process the message).
 460  */
 461 void msgfind(char *msgfile, struct minfo *buffer)
 462 {
 463         int b, e, mtype, aflag;
 464         char bbb[1024];
 465         char userid[1024];
 466         FILE *fp;
 467
 468         strcpy(userid, "");
 469         fp = fopen(msgfile, "rb");
 470         if (fp == NULL) {
 471                 syslog(LOG_ERR, "can't open message file: %s", strerror(errno));
 472                 return;
 473         }
 474         e = getc(fp);
 475         if (e != 255) {
 476                 syslog(LOG_ERR, "incorrect message format");
 477                 goto END;
 478         }
 479         mtype = getc(fp);
 480         aflag = getc(fp);
 481         buffer->I = 0L;
 482         buffer->R[0] = 0;
 483         buffer->E[0] = 0;
 484         buffer->H[0] = 0;
 485         buffer->S[0] = 0;
 486         buffer->B[0] = 0;
 487         buffer->G[0] = 0;
 488
 489       BONFGM:b = getc(fp);
 490         if (b < 0)
 491                 goto END;
 492         if (b == 'M')
 493                 goto END;
 494         fpgetfield(fp, bbb);
 495         while ((bbb[0] == ' ') && (strlen(bbb) > 1))
 496                 strcpy(bbb, &bbb[1]);
 497         if (b == 'A') {
 498                 strcpy(buffer->A, bbb);
 499                 if (strlen(userid) == 0) {
 500                         strcpy(userid, bbb);
 501                         for (e = 0; e < strlen(userid); ++e)
 502                                 if (userid[e] == ' ')
 503                                         userid[e] = '_';
 504                 }
 505         }
 506         if (b == 'O')
 507                 strcpy(buffer->O, bbb);
 508         if (b == 'C')
 509                 strcpy(buffer->C, bbb);
 510         if (b == 'N')
 511                 strcpy(buffer->N, bbb);
 512         if (b == 'S')
 513                 strcpy(buffer->S, bbb);
 514         if (b == 'P') {
 515                 /* extract the user id from the path */
 516                 for (e = 0; e < strlen(bbb); ++e)
 517                         if (bbb[e] == '!')
 518                                 strcpy(userid, &bbb[e + 1]);
 519
 520                 /* now find the next hop */
 521                 for (e = 0; e < strlen(bbb); ++e)
 522                         if (bbb[e] == '!')
 523                                 bbb[e] = 0;
 524                 strcpy(buffer->nexthop, bbb);
 525         }
 526         if (b == 'R') {
 527                 for (e = 0; e < strlen(bbb); ++e)
 528                         if (bbb[e] == '_')
 529                                 bbb[e] = ' ';
 530                 strcpy(buffer->R, bbb);
 531         }
 532         if (b == 'D')
 533                 strcpy(buffer->D, bbb);
 534         if (b == 'T')
 535                 buffer->T = atol(bbb);
 536         if (b == 'I')
 537                 buffer->I = atol(bbb);
 538         if (b == 'H')
 539                 strcpy(buffer->H, bbb);
 540         if (b == 'B')
 541                 strcpy(buffer->B, bbb);
 542         if (b == 'G')
 543                 strcpy(buffer->G, bbb);
 544         if (b == 'E')
 545                 strcpy(buffer->E, bbb);
 546         goto BONFGM;
 547
 548       END:if (buffer->I == 0L)
 549                 buffer->I = buffer->T;
 550         fclose(fp);
 551 }
 552
 553 void ship_to(char *filenm, char *sysnm)
 554 {                               /* send spool file filenm to system sysnm */
 555         char sysflnm[100];
 556         char commbuf1[100];
 557         char commbuf2[100];
 558         FILE *sysflfd;
 559
 560 #ifdef DEBUG
 561         syslog(LOG_NOTICE, "shipping %s to %s", filenm, sysnm);
 562 #endif
 563         sprintf(sysflnm, "./network/systems/%s", sysnm);
 564         sysflfd = fopen(sysflnm, "r");
 565         if (sysflfd == NULL)
 566                 syslog(LOG_ERR, "cannot open %s", sysflnm);
 567         fgets(commbuf1, 99, sysflfd);
 568         commbuf1[strlen(commbuf1) - 1] = 0;
 569         fclose(sysflfd);
 570         sprintf(commbuf2, commbuf1, filenm);
 571         system(commbuf2);
 572 }
 573
 574 /*
 575  * proc_file_transfer()  -  handle a simple file transfer packet
 576  *
 577  */
 578 void proc_file_transfer(char *tname)
 579 {                               /* name of temp file containing the whole message */
 580         char buf[256];
 581         char dest_room[ROOMNAMELEN];
 582         char subdir_name[256];
 583         FILE *tfp, *uud;
 584         int a;
 585
 586         syslog(LOG_NOTICE, "processing network file transfer...");
 587
 588         tfp = fopen(tname, "rb");
 589         if (tfp == NULL)
 590                 syslog(LOG_ERR, "cannot open %s", tname);
 591         getc(tfp);
 592         getc(tfp);
 593         getc(tfp);
 594         do {
 595                 a = getc(tfp);
 596                 if (a != 'M') {
 597                         fpgetfield(tfp, buf);
 598                         if (a == 'O') {
 599                                 strcpy(dest_room, buf);
 600                         }
 601                 }
 602         } while ((a != 'M') && (a >= 0));
 603         if (a != 'M') {
 604                 fclose(tfp);
 605                 syslog(LOG_ERR, "no message text for file transfer");
 606                 return;
 607         }
 608         strcpy(subdir_name, "---xxx---");
 609         sprintf(buf, "GOTO %s", dest_room);
 610         serv_puts(buf);
 611         serv_gets(buf);
 612         if (buf[0] == '2') {
 613                 extract(subdir_name, &buf[4], 2);
 614                 if (strlen(subdir_name) == 0)
 615                         strcpy(subdir_name, "--xxx--");
 616         }
 617         /* Change to the room's directory; if that fails, change to the
 618          * bitbucket directory.  Then run uudecode.
 619          */
 620         sprintf(buf, "(cd %s/files/%s || cd %s/files/%s ) ; exec %s",
 621                 bbs_home_directory, subdir_name,
 622                 bbs_home_directory, config.c_bucket_dir,
 623                 UUDECODE);
 624
 625         uud = (FILE *) popen(buf, "w");
 626         if (uud == NULL) {
 627                 syslog(LOG_ERR, "cannot open uudecode pipe");
 628                 fclose(tfp);
 629                 return;
 630         }
 631         fgets(buf, 128, tfp);
 632         buf[strlen(buf) - 1] = 0;
 633         for (a = 0; a < strlen(buf); ++a)
 634                 if (buf[a] == '/')
 635                         buf[a] = '_';
 636         fprintf(uud, "%s\n", buf);
 637         printf("netproc: %s\n", buf);
 638         while (a = getc(tfp), a > 0)
 639                 putc(a, uud);
 640         fclose(tfp);
 641         pclose(uud);
 642         return;
 643 }
 644
 645
 646 /* send a bounce message */
 647 void bounce(struct minfo *bminfo)
 648 {
 649
 650         FILE *bounce;
 651         char bfilename[64];
 652         static int bseq = 1;
 653         time_t now;
 654
 655         sprintf(bfilename, "./network/spoolin/bounce.%ld.%d", (long) getpid(),
 656                 bseq++);
 657         bounce = fopen(bfilename, "wb");
 658         time(&now);
 659
 660         fprintf(bounce, "%c%c%c", 0xFF, MES_NORMAL, 0);
 661         fprintf(bounce, "Ppostmaster%c", 0);
 662         fprintf(bounce, "T%ld%c", (long) now, 0);
 663         fprintf(bounce, "APostmaster%c", 0);
 664         fprintf(bounce, "OMail%c", 0);
 665         fprintf(bounce, "N%s%c", config.c_nodename, 0);
 666         fprintf(bounce, "H%s%c", config.c_humannode, 0);
 667
 668         if (strlen(bminfo->E) > 0) {
 669                 fprintf(bounce, "R%s%c", bminfo->E, 0);
 670         } else {
 671                 fprintf(bounce, "R%s%c", bminfo->A, 0);
 672         }
 673
 674         fprintf(bounce, "D%s%c", bminfo->N, 0);
 675         fprintf(bounce, "M%s could not deliver your mail to:\n",
 676                 config.c_humannode);
 677         fprintf(bounce, " \n %s\n \n", bminfo->R);
 678         fprintf(bounce, " because there is no such user on this system.\n");
 679         fprintf(bounce, " (Unsent message does *not* follow.  ");
 680         fprintf(bounce, "Help to conserve bandwidth.)\n%c", 0);
 681         fclose(bounce);
 682 }
 683
 684
 685
 686
 687 /*
 688  * Generate a Message-ID string for the use table
 689  */
 690 void strmsgid(char *buf, struct minfo *msginfo) {
 691         int i;
 692
 693         sprintf(buf, "%ld@%s", msginfo->I, msginfo->N);
 694         for (i=0; i<strlen(buf); ++i) {
 695                 if (isspace(buf[i])) {
 696                         strcpy(&buf[i], &buf[i+1]);
 697                 }
 698                 buf[i] = tolower(buf[i]);
 699         }
 700 }
 701
 702
 703
 704 /*
 705  * Check the use table to see if a message has been here before.
 706  * Returns 1 if the message is a duplicate; otherwise, it returns
 707  * 0 and the message ID is added to the use table.
 708  */
 709 int already_received(GDBM_FILE ut, struct minfo *msginfo) {
 710         char buf[256];
 711         time_t now;
 712         datum mkey, newrec;
 713         int retval = 0;
 714
 715         /* We can't check for dups on a zero msgid, so just pass them through */
 716         if ((msginfo->I)==0L) {
 717                 return 0;
 718         }
 719
 720         strmsgid(buf, msginfo);
 721         now = time(NULL);
 722
 723         mkey.dptr = buf;
 724         mkey.dsize = strlen(buf);
 725
 726         /* Set return value to 1 if message exists */
 727         if (gdbm_exists(ut, mkey)) {
 728                 retval = 1;
 729         }
 730
 731         /* Write a record into the use table for this message.
 732          * Replace existing records; this keeps the timestamp fresh.
 733          */
 734         newrec.dptr = (char *)&now;
 735         newrec.dsize = sizeof(now);
 736         gdbm_store(ut, mkey, newrec, GDBM_REPLACE);
 737
 738         return(retval);
 739 }
 740
 741
 742
 743 /*
 744  * Purge any old entries out of the use table.
 745  *
 746  * Yes, you're reading this correctly: it keeps traversing the table until
 747  * it manages to do a complete pass without deleting any records.  Read the
 748  * gdbm man page to find out why.
 749  *
 750  */
 751 void purge_use_table(GDBM_FILE ut) {
 752         datum mkey, nextkey, therec;
 753         int purged_anything = 0;
 754         time_t rec_timestamp, now;
 755
 756         now = time(NULL);
 757
 758         do {
 759                 purged_anything = 0;
 760                 mkey = gdbm_firstkey(ut);
 761                 while (mkey.dptr != NULL) {
 762                         therec = gdbm_fetch(ut, mkey);
 763                         if (therec.dptr != NULL) {
 764                                 memcpy(&rec_timestamp, therec.dptr,
 765                                         sizeof(time_t));
 766                                 free(therec.dptr);
 767
 768                                 if ((now - rec_timestamp) > USE_TIME) {
 769                                         gdbm_delete(ut, mkey);
 770                                         purged_anything = 1;
 771                                 }
 772
 773                         }
 774                         nextkey = gdbm_nextkey(ut, mkey);
 775                         free(mkey.dptr);
 776                         mkey = nextkey;
 777                 }
 778         } while (purged_anything != 0);
 779 }
 780
 781
 782
 783 /*
 784  * process incoming files in ./network/spoolin
 785  */
 786 void inprocess(void)
 787 {
 788         FILE *fp, *message, *testfp, *ls, *duplist;
 789         static struct minfo minfo;
 790         struct recentmsg recentmsg;
 791         char tname[128], aaa[1024], iname[256], sfilename[256], pfilename[256];
 792         int a, b;
 793         int FieldID;
 794         struct syslist *stemp;
 795         char *ptr = NULL;
 796         char buf[256];
 797         long msglen;
 798         int bloklen;
 799         GDBM_FILE use_table;
 800
 801         /* temp file names */
 802         sprintf(tname, tmpnam(NULL));
 803         sprintf(iname, tmpnam(NULL));
 804
 805         load_filterlist();
 806
 807         /* Make sure we're in the right directory */
 808         chdir(bbs_home_directory);
 809
 810         /* Open the use table */
 811         use_table = gdbm_open("./data/usetable.gdbm", 512,
 812                               GDBM_WRCREAT, 0600, 0);
 813         if (use_table == NULL) {
 814                 syslog(LOG_ERR, "could not open use table: %s",
 815                        strerror(errno));
 816         }
 817
 818
 819         /* temporary file to contain a log of rejected dups */
 820         duplist = tmpfile();
 821
 822         /* Let the shell do the dirty work. Get all data from spoolin */
 823         do {
 824                 sprintf(aaa, "cd %s/network/spoolin; ls", bbs_home_directory);
 825                 ls = popen(aaa, "r");
 826                 if (ls == NULL) {
 827                         syslog(LOG_ERR, "could not open dir cmd: %s", strerror(errno));
 828                 }
 829                 if (ls != NULL) {
 830                         do {
 831 SKIP:                           ptr = fgets(sfilename, sizeof sfilename, ls);
 832                                 if (ptr != NULL) {
 833                                         sfilename[strlen(sfilename) - 1] = 0;
 834                                         if (!strcmp(sfilename, ".")) goto SKIP;
 835                                         if (!strcmp(sfilename, "..")) goto SKIP;
 836                                         if (!strcmp(sfilename, "CVS")) goto SKIP;
 837                                         goto PROCESS_IT;
 838                                 }
 839                         } while (ptr != NULL);
 840 PROCESS_IT:             pclose(ls);
 841                 }
 842                 if (ptr != NULL) {
 843                         sprintf(pfilename, "%s/network/spoolin/%s", bbs_home_directory, sfilename);
 844                         syslog(LOG_NOTICE, "processing <%s>", pfilename);
 845
 846                         fp = fopen(pfilename, "rb");
 847                         if (fp == NULL) {
 848                                 syslog(LOG_ERR, "cannot open %s: %s", pfilename, strerror(errno));
 849                                 fp = fopen("/dev/null", "rb");
 850                         }
 851 NXMSG:  /* Seek to the beginning of the next message */
 852                         do {
 853                                 a = getc(fp);
 854                         } while ((a != 255) && (a >= 0));
 855                         if (a < 0)
 856                                 goto ENDSTR;
 857
 858                         /* This crates the temporary file. */
 859                         message = fopen(tname, "wb");
 860                         if (message == NULL) {
 861                                 syslog(LOG_ERR, "error creating %s: %s",
 862                                         tname, strerror(errno));
 863                                 goto ENDSTR;
 864                         }
 865                         putc(255, message);     /* 0xFF (start-of-message) */
 866                         a = getc(fp);
 867                         putc(a, message);       /* type */
 868                         a = getc(fp);
 869                         putc(a, message);       /* mode */
 870                         do {
 871                                 FieldID = getc(fp);     /* Header field ID */
 872                                 putc(FieldID, message);
 873                                 do {
 874                                         a = getc(fp);
 875                                         putc(a, message);
 876                                 } while (a > 0);
 877                         } while ((FieldID != 'M') && (a >= 0));
 878                         /* M is always last */
 879
 880                         msglen = ftell(message);
 881                         fclose(message);
 882
 883                         /* process the individual mesage */
 884                         minfo.D[0] = 0;
 885                         minfo.C[0] = 0;
 886                         minfo.B[0] = 0;
 887                         minfo.G[0] = 0;
 888                         minfo.R[0] = 0;
 889                         msgfind(tname, &minfo);
 890                         strncpy(recentmsg.RMnodename, minfo.N, 9);
 891                         recentmsg.RMnodename[9] = 0;
 892                         recentmsg.RMnum = minfo.I;
 893                         syslog(LOG_NOTICE, "#%ld fm <%s> in <%s> @ <%s>",
 894                                minfo.I, minfo.A, minfo.O, minfo.N);
 895                         if (strlen(minfo.R) > 0) {
 896                                 syslog(LOG_NOTICE, "     to <%s>", minfo.R);
 897                                 if (strlen(minfo.D) > 0) {
 898                                         syslog(LOG_NOTICE, "     @ <%s>",
 899                                                 minfo.D);
 900                                 }
 901                         }
 902                         if (!strcasecmp(minfo.D, FQDN))
 903                                 strcpy(minfo.D, NODENAME);
 904
 905 /* this routine updates our info on the system that sent the message */
 906                         stemp = get_sys_ptr(minfo.N);
 907                         if ((stemp == NULL) && (get_sys_ptr(minfo.nexthop) != NULL)) {
 908                                 /* add non-neighbor system to map */
 909                                 syslog(LOG_NOTICE, "Adding non-neighbor system <%s> to map",
 910                                        slist->s_name);
 911                                 stemp = (struct syslist *) malloc((long) sizeof(struct syslist));
 912                                 stemp->next = slist;
 913                                 slist = stemp;
 914                                 strcpy(slist->s_name, minfo.N);
 915                                 strcpy(slist->s_type, "use");
 916                                 strcpy(slist->s_nexthop, minfo.nexthop);
 917                                 time(&slist->s_lastcontact);
 918                         } else if ((stemp == NULL) && (!strcasecmp(minfo.N, minfo.nexthop))) {
 919                                 /* add neighbor system to map */
 920                                 syslog(LOG_NOTICE, "Adding neighbor system <%s> to map",
 921                                        slist->s_name);
 922                                 sprintf(aaa, "%s/network/systems/%s", bbs_home_directory, minfo.N);
 923                                 testfp = fopen(aaa, "r");
 924                                 if (testfp != NULL) {
 925                                         fclose(testfp);
 926                                         stemp = (struct syslist *)
 927                                             malloc((long) sizeof(struct syslist));
 928                                         stemp->next = slist;
 929                                         slist = stemp;
 930                                         strcpy(slist->s_name, minfo.N);
 931                                         strcpy(slist->s_type, "bin");
 932                                         strcpy(slist->s_nexthop, "Mail");
 933                                         time(&slist->s_lastcontact);
 934                                 }
 935                         }
 936                         /* now update last contact and long node name if we can */
 937                         if (stemp != NULL) {
 938                                 time(&stemp->s_lastcontact);
 939                                 if (strlen(minfo.H) > 0)
 940                                         strcpy(stemp->s_humannode, minfo.H);
 941                                 if (strlen(minfo.B) > 0)
 942                                         strcpy(stemp->s_phonenum, minfo.B);
 943                                 if (strlen(minfo.G) > 0)
 944                                         strcpy(stemp->s_gdom, minfo.G);
 945                         }
 946
 947                         /* Check the use table; reject message if it's been here before */
 948                         if (already_received(use_table, &minfo)) {
 949                                 syslog(LOG_NOTICE, "rejected duplicate message");
 950                                 fprintf(duplist, "#%ld fm <%s> in <%s> @ <%s>\n",
 951                                         minfo.I, minfo.A, minfo.O, minfo.N);
 952                         }
 953
 954
 955                         /* route the message if necessary */
 956                         else if ((strcasecmp(minfo.D, NODENAME)) && (minfo.D[0] != 0)) {
 957                                 a = get_sysinfo_type(minfo.D);
 958                                 syslog(LOG_NOTICE, "routing message to system <%s>", minfo.D);
 959                                 fflush(stdout);
 960                                 if (a == MES_INTERNET) {
 961                                         if (fork() == 0) {
 962                                                 syslog(LOG_NOTICE, "netmailer %s", tname);
 963                                                 fflush(stdout);
 964                                                 execlp("./netmailer", "netmailer",
 965                                                        tname, NULL);
 966                                                 syslog(LOG_ERR, "error running netmailer: %s",
 967                                                        strerror(errno));
 968                                                 exit(errno);
 969                                         } else
 970                                                 while (wait(&b) != (-1));
 971                                 } else if (a == MES_BINARY) {
 972                                         ship_to(tname, minfo.D);
 973                                 } else {
 974                                         /* message falls into the bit bucket? */
 975                                 }
 976                         }
 977
 978                         /* check to see if it's a file transfer */
 979                         else if (!strncasecmp(minfo.S, "FILE", 4)) {
 980                                 proc_file_transfer(tname);
 981                         }
 982
 983                         /* otherwise process it as a normal message */
 984                         else {
 985
 986                                 if (!strcasecmp(minfo.R, "postmaster")) {
 987                                         strcpy(minfo.R, "");
 988                                         strcpy(minfo.C, "Aide");
 989                                 }
 990                                 if (strlen(minfo.R) > 0) {
 991                                         sprintf(buf, "GOTO _MAIL_");
 992                                 }
 993                                 if (is_banned(minfo.A, minfo.C, minfo.N)) {
 994                                         sprintf(buf, "GOTO %s", FILTERROOM);
 995                                 } else {
 996                                         if (strlen(minfo.C) > 0) {
 997                                                 sprintf(buf, "GOTO %s", minfo.C);
 998                                         } else {
 999                                                 sprintf(buf, "GOTO %s", minfo.O);
1000                                         }
1001                                 }
1002                                 serv_puts(buf);
1003                                 serv_gets(buf);
1004                                 if (buf[0] != '2') {
1005                                         syslog(LOG_ERR, "%s", buf);
1006                                         sprintf(buf, "GOTO _BITBUCKET_");
1007                                         serv_puts(buf);
1008                                         serv_gets(buf);
1009                                 }
1010                                 /* Open the temporary file containing the message */
1011                                 message = fopen(tname, "rb");
1012                                 if (message == NULL) {
1013                                         syslog(LOG_ERR, "cannot open %s: %s",
1014                                                tname, strerror(errno));
1015                                         unlink(tname);
1016                                         goto NXMSG;
1017                                 }
1018                                 /* Transmit the message to the server */
1019                                 sprintf(buf, "ENT3 1|%s|%ld", minfo.R, msglen);
1020                                 serv_puts(buf);
1021                                 serv_gets(buf);
1022                                 if (!strncmp(buf, "570", 3)) {
1023                                         /* no such user, do a bounce */
1024                                         bounce(&minfo);
1025                                 }
1026                                 if (buf[0] == '7') {
1027                                         /* Always use the server's idea of the message length,
1028                                          * even though they should both be identical */
1029                                         msglen = atol(&buf[4]);
1030                                         while (msglen > 0L) {
1031                                                 bloklen = ((msglen >= 255L) ? 255 : ((int) msglen));
1032                                                 if (fread(buf, bloklen, 1, message) < 1) {
1033                                                         syslog(LOG_ERR,
1034                                                                "error trying to read %d bytes: %s",
1035                                                                bloklen, strerror(errno));
1036                                                 }
1037                                                 serv_write(buf, bloklen);
1038                                                 msglen = msglen - (long) bloklen;
1039                                         }
1040                                         serv_puts("NOOP");
1041                                         serv_gets(buf);
1042                                 } else {
1043                                         syslog(LOG_ERR, "%s", buf);
1044                                 }
1045
1046                                 fclose(message);
1047                         }
1048
1049                         unlink(tname);
1050                         goto NXMSG;
1051
1052 ENDSTR:                 fclose(fp);
1053                         unlink(pfilename);
1054                 }
1055         } while (ptr != NULL);
1056         unlink(iname);
1057
1058         purge_use_table(use_table);
1059         gdbm_close(use_table);
1060
1061
1062         /*
1063          * If dups were rejected, post a message saying so
1064          */
1065         if (ftell(duplist)!=0L) {
1066                 fp = fopen("./network/spoolin/ctdl_rejects", "ab");
1067                 if (fp != NULL) {
1068                         fprintf(fp, "%cA%c", 255, 1);
1069                         fprintf(fp, "T%ld%c", time(NULL), 0);
1070                         fprintf(fp, "ACitadel%c", 0);
1071                         fprintf(fp, "OAide%cM", 0);
1072                         fprintf(fp, "The following duplicate messages"
1073                                 " were rejected:\n \n");
1074                         rewind(duplist);
1075                         while (fgets(buf, sizeof(buf), duplist) != NULL) {
1076                                 buf[strlen(buf)-1] = 0;
1077                                 fprintf(fp, " %s\n", buf);
1078                         }
1079                         fprintf(fp, "%c", 0);
1080                         pclose(fp);
1081                 }
1082         }
1083
1084         fclose(duplist);
1085
1086 }
1087
1088
1089 /* Checks to see whether its ok to send */
1090 /* Returns 1 for ok, send message       */
1091 /* Returns 0 if message already there   */
1092 int checkpath(char *path, char *sys)
1093 {
1094         int a;
1095         char sys2[512];
1096         strcpy(sys2, sys);
1097         strcat(sys2, "!");
1098
1099 #ifdef DEBUG
1100         syslog(LOG_NOTICE, "checkpath <%s> <%s> ... ", path, sys);
1101 #endif
1102         for (a = 0; a < strlen(path); ++a) {
1103                 if (!strncmp(&path[a], sys2, strlen(sys2)))
1104                         return (0);
1105         }
1106         return (1);
1107 }
1108
1109 /*
1110  * implement split horizon algorithm
1111  */
1112 int ismsgok(long int mpos, FILE * mmfp, char *sysname)
1113 {
1114         int a;
1115         int ok = 0;             /* fail safe - no path, don't send it */
1116         char fbuf[256];
1117
1118         fseek(mmfp, mpos, 0);
1119         if (getc(mmfp) != 255)
1120                 return (0);
1121         getc(mmfp);
1122         getc(mmfp);
1123
1124         while (a = getc(mmfp), ((a != 'M') && (a != 0))) {
1125                 fpgetfield(mmfp, fbuf);
1126                 if (a == 'P') {
1127                         ok = checkpath(fbuf, sysname);
1128                 }
1129         }
1130 #ifdef DEBUG
1131         syslog(LOG_NOTICE, "%s", ((ok) ? "SEND" : "(no)"));
1132 #endif
1133         return (ok);
1134 }
1135
1136
1137
1138 /* spool list of messages to a file */
1139 /* returns # of msgs spooled */
1140 int spool_out(struct msglist *cmlist, FILE * destfp, char *sysname)
1141 {
1142         struct msglist *cmptr;
1143         FILE *mmfp;
1144         char fbuf[128];
1145         int a;
1146         int msgs_spooled = 0;
1147         long msg_len;
1148         int blok_len;
1149
1150         char buf[256];
1151         char curr_rm[256];
1152
1153         strcpy(curr_rm, "");
1154
1155         /* for each message in the list... */
1156         for (cmptr = cmlist; cmptr != NULL; cmptr = cmptr->next) {
1157
1158                 /* make sure we're in the correct room... */
1159                 if (strcasecmp(curr_rm, cmptr->m_rmname)) {
1160                         sprintf(buf, "GOTO %s", cmptr->m_rmname);
1161                         serv_puts(buf);
1162                         serv_gets(buf);
1163                         if (buf[0] == '2') {
1164                                 strcpy(curr_rm, cmptr->m_rmname);
1165                         } else {
1166                                 syslog(LOG_ERR, "%s", buf);
1167                         }
1168                 }
1169                 /* download the message from the server... */
1170                 mmfp = tmpfile();
1171                 sprintf(buf, "MSG3 %ld", cmptr->m_num);
1172                 serv_puts(buf);
1173                 serv_gets(buf);
1174                 if (buf[0] == '6') {    /* read the msg */
1175                         msg_len = atol(&buf[4]);
1176                         while (msg_len > 0L) {
1177                                 blok_len = ((msg_len >= 256L) ? 256 : (int) msg_len);
1178                                 serv_read(buf, blok_len);
1179                                 fwrite(buf, blok_len, 1, mmfp);
1180                                 msg_len = msg_len - (long) blok_len;
1181                         }
1182                 } else {        /* or print the err */
1183                         syslog(LOG_ERR, "%s", buf);
1184                 }
1185
1186                 rewind(mmfp);
1187
1188                 if (ismsgok(0L, mmfp, sysname)) {
1189                         ++msgs_spooled;
1190                         fflush(stdout);
1191                         fseek(mmfp, 0L, 0);
1192                         fread(fbuf, 3, 1, mmfp);
1193                         fwrite(fbuf, 3, 1, destfp);
1194                         while (a = getc(mmfp), ((a != 0) && (a != 'M'))) {
1195                                 if (a != 'C')
1196                                         putc(a, destfp);
1197                                 fpgetfield(mmfp, fbuf);
1198                                 if (a == 'P')
1199                                         fprintf(destfp, "%s!", NODENAME);
1200                                 if (a != 'C')
1201                                         fwrite(fbuf, strlen(fbuf) + 1, 1, destfp);
1202                         }
1203                         if (a == 'M') {
1204                                 fprintf(destfp, "C%s%c",
1205                                         cmptr->m_rmname, 0);
1206                                 putc('M', destfp);
1207                                 do {
1208                                         a = getc(mmfp);
1209                                         putc(a, destfp);
1210                                 } while (a > 0);
1211                         }
1212                 }
1213                 fclose(mmfp);
1214         }
1215
1216         return (msgs_spooled);
1217 }
1218
1219 void outprocess(char *sysname)
1220 {                               /* send new room messages to sysname */
1221         char sysflnm[64];
1222         char srmname[32];
1223         char shiptocmd[128];
1224         char lbuf[64];
1225         char tempflnm[64];
1226         char buf[256];
1227         struct msglist *cmlist = NULL;
1228         struct rmlist *crmlist = NULL;
1229         struct rmlist *rmptr, *rmptr2;
1230         struct msglist *cmptr, *cmptr2;
1231         FILE *sysflfp, *tempflfp;
1232         int outgoing_msgs;
1233         long thismsg;
1234
1235         sprintf(tempflnm, tmpnam(NULL));
1236         tempflfp = fopen(tempflnm, "w");
1237         if (tempflfp == NULL)
1238                 return;
1239
1240
1241 /*
1242  * Read system file for node in question and put together room list
1243  */
1244         sprintf(sysflnm, "%s/network/systems/%s", bbs_home_directory, sysname);
1245         sysflfp = fopen(sysflnm, "r");
1246         if (sysflfp == NULL)
1247                 return;
1248         fgets(shiptocmd, 128, sysflfp);
1249         shiptocmd[strlen(shiptocmd) - 1] = 0;
1250         while (!feof(sysflfp)) {
1251                 if (fgets(srmname, 32, sysflfp) == NULL)
1252                         break;
1253                 srmname[strlen(srmname) - 1] = 0;
1254                 fgets(lbuf, 32, sysflfp);
1255                 rmptr = (struct rmlist *) malloc(sizeof(struct rmlist));
1256                 rmptr->next = NULL;
1257                 strcpy(rmptr->rm_name, srmname);
1258                 strip_trailing_whitespace(rmptr->rm_name);
1259                 rmptr->rm_lastsent = atol(lbuf);
1260                 if (crmlist == NULL)
1261                         crmlist = rmptr;
1262                 else if (!strcasecmp(rmptr->rm_name, "control")) {
1263                         /* control has to be first in room list */
1264                         rmptr->next = crmlist;
1265                         crmlist = rmptr;
1266                 } else {
1267                         rmptr2 = crmlist;
1268                         while (rmptr2->next != NULL)
1269                                 rmptr2 = rmptr2->next;
1270                         rmptr2->next = rmptr;
1271                 }
1272         }
1273         fclose(sysflfp);
1274
1275 /*
1276  * Assemble list of messages to be spooled
1277  */
1278         for (rmptr = crmlist; rmptr != NULL; rmptr = rmptr->next) {
1279
1280                 sprintf(buf, "GOTO %s", rmptr->rm_name);
1281                 serv_puts(buf);
1282                 serv_gets(buf);
1283                 if (buf[0] != '2') {
1284                         syslog(LOG_ERR, "%s", buf);
1285                 } else {
1286                         sprintf(buf, "MSGS GT|%ld", rmptr->rm_lastsent);
1287                         serv_puts(buf);
1288                         serv_gets(buf);
1289                         if (buf[0] == '1')
1290                                 while (serv_gets(buf), strcmp(buf, "000")) {
1291                                         thismsg = atol(buf);
1292                                         if (thismsg > (rmptr->rm_lastsent)) {
1293                                                 rmptr->rm_lastsent = thismsg;
1294
1295                                                 cmptr = (struct msglist *)
1296                                                     malloc(sizeof(struct msglist));
1297                                                 cmptr->next = NULL;
1298                                                 cmptr->m_num = thismsg;
1299                                                 strcpy(cmptr->m_rmname, rmptr->rm_name);
1300
1301                                                 if (cmlist == NULL)
1302                                                         cmlist = cmptr;
1303                                                 else {
1304                                                         cmptr2 = cmlist;
1305                                                         while (cmptr2->next != NULL)
1306                                                                 cmptr2 = cmptr2->next;
1307                                                         cmptr2->next = cmptr;
1308                                                 }
1309                                         }
1310                         } else {        /* print error from "msgs all" */
1311                                 syslog(LOG_ERR, "%s", buf);
1312                         }
1313                 }
1314         }
1315
1316         outgoing_msgs = 0;
1317         cmptr2 = cmlist;        /* this loop counts the messages */
1318         while (cmptr2 != NULL) {
1319                 ++outgoing_msgs;
1320                 cmptr2 = cmptr2->next;
1321         }
1322         syslog(LOG_NOTICE, "%d messages to be spooled to %s",
1323                outgoing_msgs, sysname);
1324
1325 /*
1326  * Spool out the messages, but only if there are any.
1327  */
1328         if (outgoing_msgs != 0)
1329                 outgoing_msgs = spool_out(cmlist, tempflfp, sysname);
1330         syslog(LOG_NOTICE, "%d messages actually spooled",
1331                outgoing_msgs);
1332
1333 /*
1334  * Deallocate list of spooled messages.
1335  */
1336         while (cmlist != NULL) {
1337                 cmptr = cmlist->next;
1338                 free(cmlist);
1339                 cmlist = cmptr;
1340         }
1341
1342 /*
1343  * Rewrite system file and deallocate room list.
1344  */
1345         syslog(LOG_NOTICE, "Spooling...");
1346         sysflfp = fopen(sysflnm, "w");
1347         fprintf(sysflfp, "%s\n", shiptocmd);
1348         for (rmptr = crmlist; rmptr != NULL; rmptr = rmptr->next)
1349                 fprintf(sysflfp, "%s\n%ld\n", rmptr->rm_name, rmptr->rm_lastsent);
1350         fclose(sysflfp);
1351         while (crmlist != NULL) {
1352                 rmptr = crmlist->next;
1353                 free(crmlist);
1354                 crmlist = rmptr;
1355         }
1356
1357 /*
1358  * Close temporary file, ship it out, and return
1359  */
1360         fclose(tempflfp);
1361         if (outgoing_msgs != 0)
1362                 ship_to(tempflnm, sysname);
1363         unlink(tempflnm);
1364 }
1365
1366
1367 /*
1368  * Connect netproc to the Citadel server running on this computer.
1369  */
1370 void np_attach_to_server(void)
1371 {
1372         char buf[256];
1373         char portname[8];
1374         char *args[] =
1375         {"netproc", "localhost", NULL, NULL};
1376
1377         syslog(LOG_NOTICE, "Attaching to server...");
1378         sprintf(portname, "%d", config.c_port_number);
1379         args[2] = portname;
1380         attach_to_server(3, args);
1381         serv_gets(buf);
1382         syslog(LOG_NOTICE, "%s", &buf[4]);
1383         sprintf(buf, "IPGM %d", config.c_ipgm_secret);
1384         serv_puts(buf);
1385         serv_gets(buf);
1386         syslog(LOG_NOTICE, "%s", &buf[4]);
1387         if (buf[0] != '2') {
1388                 cleanup(2);
1389         }
1390 }
1391
1392
1393
1394 /*
1395  * main
1396  */
1397 int main(int argc, char **argv)
1398 {
1399         char allst[32];
1400         FILE *allfp;
1401         int a;
1402         int import_only = 0;    /* if set to 1, don't export anything */
1403
1404         openlog("netproc", LOG_PID, LOG_USER);
1405         strcpy(bbs_home_directory, BBSDIR);
1406
1407         /*
1408          * Change directories if specified
1409          */
1410         for (a = 1; a < argc; ++a) {
1411                 if (!strncmp(argv[a], "-h", 2)) {
1412                         strcpy(bbs_home_directory, argv[a]);
1413                         strcpy(bbs_home_directory, &bbs_home_directory[2]);
1414                         home_specified = 1;
1415                 } else if (!strcmp(argv[a], "-i")) {
1416                         import_only = 1;
1417                 } else {
1418                         fprintf(stderr, "netproc: usage: ");
1419                         fprintf(stderr, "netproc [-hHomeDir] [-i]\n");
1420                         exit(1);
1421                 }
1422         }
1423
1424         get_config();
1425
1426         if (set_lockfile() != 0) {
1427                 syslog(LOG_NOTICE, "lock file exists: already running");
1428                 cleanup(1);
1429         }
1430         signal(SIGINT, cleanup);
1431         signal(SIGQUIT, cleanup);
1432         signal(SIGHUP, cleanup);
1433         signal(SIGTERM, cleanup);
1434
1435         syslog(LOG_NOTICE, "started.  pid=%d", getpid());
1436         fflush(stdout);
1437         np_attach_to_server();
1438         fflush(stdout);
1439
1440         if (load_syslist() != 0)
1441                 syslog(LOG_ERR, "cannot load sysinfo");
1442         setup_special_nodes();
1443
1444         inprocess();            /* first collect incoming stuff */
1445
1446         if (import_only != 1) {
1447                 allfp = (FILE *) popen("cd ./network/systems; ls", "r");
1448                 if (allfp != NULL) {
1449                         while (fgets(allst, 32, allfp) != NULL) {
1450                                 allst[strlen(allst) - 1] = 0;
1451                                 outprocess(allst);
1452                         }
1453                         pclose(allfp);
1454                 }
1455                 /* import again in case anything new was generated */
1456                 inprocess();
1457         }
1458         rewrite_syslist();
1459         syslog(LOG_NOTICE, "processing ended.");
1460         cleanup(0);
1461         return 0;
1462 }