citadel/msgbase.c

   1 #include <stdlib.h>
   2 #include <unistd.h>
   3 #include <stdio.h>
   4 #include <fcntl.h>
   5 #include <time.h>
   6 #include <ctype.h>
   7 #include <string.h>
   8 #include <syslog.h>
   9 #include <pthread.h>
  10 #include "citadel.h"
  11 #include "server.h"
  12 #include <errno.h>
  13 #include <sys/stat.h>
  14 #include "database.h"
  15 #include "msgbase.h"
  16 #include "support.h"
  17 #include "sysdep_decls.h"
  18 #include "room_ops.h"
  19 #include "user_ops.h"
  20 #include "control.h"
  21 #include "dynloader.h"
  22
  23 #define MSGS_ALL        0
  24 #define MSGS_OLD        1
  25 #define MSGS_NEW        2
  26 #define MSGS_FIRST      3
  27 #define MSGS_LAST       4
  28 #define MSGS_GT         5
  29
  30 extern struct config config;
  31 int twitroom=-1;
  32
  33
  34 /*
  35  * Aliasing for network mail.
  36  * (Error messages have been commented out, because this is a server.)
  37  */
  38 int alias(char *name)           /* process alias and routing info for mail */
  39              {
  40         FILE *fp;
  41         int a,b;
  42         char aaa[300],bbb[300];
  43
  44         fp=fopen("network/mail.aliases","r");
  45         if (fp==NULL) fp=fopen("/dev/null","r");
  46         if (fp==NULL) return(M_ERROR);
  47 GNA:    strcpy(aaa,""); strcpy(bbb,"");
  48         do {
  49                 a=getc(fp);
  50                 if (a==',') a=0;
  51                 if (a>0) {
  52                         b=strlen(aaa);
  53                         aaa[b]=a;
  54                         aaa[b+1]=0;
  55                         }
  56                 } while(a>0);
  57         do {
  58                 a=getc(fp);
  59                 if (a==10) a=0;
  60                 if (a>0) {
  61                         b=strlen(bbb);
  62                         bbb[b]=a;
  63                         bbb[b+1]=0;
  64                         }
  65                 } while(a>0);
  66         if (a<0) {
  67                 fclose(fp);
  68                 goto DETYPE;
  69                 }
  70         if (strcasecmp(name,aaa)) goto GNA;
  71         fclose(fp);
  72         strcpy(name,bbb);
  73         /* cprintf("*** Mail is being forwarded to %s\n",name); */
  74
  75 DETYPE: /* determine local or remote type, see citadel.h */
  76         for (a=0; a<strlen(name); ++a) if (name[a]=='!') return(M_INTERNET);
  77         for (a=0; a<strlen(name); ++a)
  78                 if (name[a]=='@')
  79                         for (b=a; b<strlen(name); ++b)
  80                                 if (name[b]=='.') return(M_INTERNET);
  81         b=0; for (a=0; a<strlen(name); ++a) if (name[a]=='@') ++b;
  82         if (b>1) {
  83                 /* cprintf("Too many @'s in address\n"); */
  84                 return(M_ERROR);
  85                 }
  86         if (b==1) {
  87                 for (a=0; a<strlen(name); ++a)
  88                         if (name[a]=='@') strcpy(bbb,&name[a+1]);
  89                 while (bbb[0]==32) strcpy(bbb,&bbb[1]);
  90                 fp = fopen("network/mail.sysinfo","r");
  91                 if (fp==NULL) return(M_ERROR);
  92 GETSN:          do {
  93                         a=getstring(fp,aaa);
  94                         } while ((a>=0)&&(strcasecmp(aaa,bbb)));
  95                 a=getstring(fp,aaa);
  96                 if (!strncmp(aaa,"use ",4)) {
  97                         strcpy(bbb,&aaa[4]);
  98                         fseek(fp,0L,0);
  99                         goto GETSN;
 100                         }
 101                 fclose(fp);
 102                 if (!strncmp(aaa,"uum",3)) {
 103                         strcpy(bbb,name);
 104                         for (a=0; a<strlen(bbb); ++a) {
 105                                 if (bbb[a]=='@') bbb[a]=0;
 106                                 if (bbb[a]==' ') bbb[a]='_';
 107                                 }
 108                         while(bbb[strlen(bbb)-1]=='_') bbb[strlen(bbb)-1]=0;
 109                         sprintf(name,&aaa[4],bbb);
 110                         return(M_INTERNET);
 111                         }
 112                 if (!strncmp(aaa,"bin",3)) {
 113                         strcpy(aaa,name); strcpy(bbb,name);
 114                         while (aaa[strlen(aaa)-1]!='@') aaa[strlen(aaa)-1]=0;
 115                         aaa[strlen(aaa)-1]=0;
 116                         while (aaa[strlen(aaa)-1]==' ') aaa[strlen(aaa)-1]=0;
 117                         while (bbb[0]!='@') strcpy(bbb,&bbb[1]);
 118                         strcpy(bbb,&bbb[1]);
 119                         while (bbb[0]==' ') strcpy(bbb,&bbb[1]);
 120                         sprintf(name,"%s @%s",aaa,bbb);
 121                         return(M_BINARY);
 122                         }
 123                 return(M_ERROR);
 124                 }
 125         return(M_LOCAL);
 126         }
 127
 128
 129 void get_mm(void) {
 130         FILE *fp;
 131
 132         fp=fopen("citadel.control","r");
 133         fread((char *)&CitControl,sizeof(struct CitControl),1,fp);
 134         fclose(fp);
 135         }
 136
 137 /*
 138  * cmd_msgs()  -  get list of message #'s in this room
 139  */
 140 void cmd_msgs(char *cmdbuf)
 141 {
 142         int a;
 143         int mode;
 144         char which[256];
 145         int cm_howmany;
 146         long cm_gt;
 147
 148         extract(which,cmdbuf,0);
 149
 150         mode = MSGS_ALL;
 151         strcat(which,"   ");
 152         if (!strncasecmp(which,"OLD",3))        mode = MSGS_OLD;
 153         if (!strncasecmp(which,"NEW",3))        mode = MSGS_NEW;
 154         if (!strncasecmp(which,"FIRST",5))      {
 155                 mode = MSGS_FIRST;
 156                 cm_howmany = extract_int(cmdbuf,1);
 157                 }
 158         if (!strncasecmp(which,"LAST",4))       {
 159                 mode = MSGS_LAST;
 160                 cm_howmany = extract_int(cmdbuf,1);
 161                 }
 162         if (!strncasecmp(which,"GT",2)) {
 163                 mode = MSGS_GT;
 164                 cm_gt = extract_long(cmdbuf,1);
 165                 }
 166
 167         if ((!(CC->logged_in))&&(!(CC->internal_pgm))) {
 168                 cprintf("%d not logged in\n",ERROR+NOT_LOGGED_IN);
 169                 return;
 170                 }
 171         if (CC->curr_rm < 0) {
 172                 cprintf("%d no room\n",ERROR);
 173                 return;
 174                 }
 175         get_mm();
 176         get_msglist(CC->curr_rm);
 177         getuser(&CC->usersupp,CC->curr_user);
 178         cprintf("%d %d messages...\n",LISTING_FOLLOWS, CC->num_msgs);
 179         if (CC->num_msgs != 0) {
 180            for (a=0; a<(CC->num_msgs); ++a)
 181                if ((MessageFromList(a) >=0)
 182                && (
 183
 184 (mode==MSGS_ALL)
 185 || ((mode==MSGS_OLD) && (MessageFromList(a) <= CC->usersupp.lastseen[CC->curr_rm]))
 186 || ((mode==MSGS_NEW) && (MessageFromList(a) > CC->usersupp.lastseen[CC->curr_rm]))
 187 || ((mode==MSGS_NEW) && (MessageFromList(a) >= CC->usersupp.lastseen[CC->curr_rm])
 188                      && (CC->usersupp.flags & US_LASTOLD))
 189 || ((mode==MSGS_LAST)&& (a>=(CC->num_msgs-cm_howmany)))
 190 || ((mode==MSGS_FIRST)&&(a<cm_howmany))
 191 || ((mode==MSGS_GT) && (MessageFromList(a) > cm_gt))
 192
 193                         )
 194                 ) {
 195                         cprintf("%ld\n", MessageFromList(a));
 196                         }
 197            }
 198         cprintf("000\n");
 199         }
 200
 201
 202
 203 /*
 204  * help_subst()  -  support routine for help file viewer
 205  */
 206 void help_subst(char *strbuf, char *source, char *dest)
 207 {
 208         char workbuf[256];
 209         int p;
 210
 211         while (p=pattern2(strbuf,source), (p>=0)) {
 212                 strcpy(workbuf,&strbuf[p+strlen(source)]);
 213                 strcpy(&strbuf[p],dest);
 214                 strcat(strbuf,workbuf);
 215                 }
 216         }
 217
 218
 219 void do_help_subst(char *buffer)
 220 {
 221         char buf2[16];
 222
 223         help_subst(buffer,"^nodename",config.c_nodename);
 224         help_subst(buffer,"^humannode",config.c_humannode);
 225         help_subst(buffer,"^fqdn",config.c_fqdn);
 226         help_subst(buffer,"^username",CC->usersupp.fullname);
 227         sprintf(buf2,"%ld",CC->usersupp.usernum);
 228         help_subst(buffer,"^usernum",buf2);
 229         help_subst(buffer,"^sysadm",config.c_sysadm);
 230         help_subst(buffer,"^variantname",CITADEL);
 231         sprintf(buf2,"%d",config.c_maxsessions);
 232         help_subst(buffer,"^maxsessions",buf2);
 233         }
 234
 235
 236
 237 /*
 238  * memfmout()  -  Citadel text formatter and paginator.
 239  *             Although the original purpose of this routine was to format
 240  *             text to the reader's screen width, all we're really using it
 241  *             for here is to format text out to 80 columns before sending it
 242  *             to the client.  The client software may reformat it again.
 243  */
 244 void memfmout(int width, char *mptr, char subst)
 245                         /* screen width to use */
 246                         /* where are we going to get our text from? */
 247                         /* nonzero if we should use hypertext mode */
 248         {
 249         int a,b,c,real,old;
 250         CIT_UBYTE ch;
 251         char aaa[140];
 252         char buffer[256];
 253
 254         strcpy(aaa,""); old=255;
 255         strcpy(buffer,"");
 256         c=1; /* c is the current pos */
 257
 258 FMTA:   if (subst) {
 259                 while (ch=*mptr, ((ch!=0) && (strlen(buffer)<126) )) {
 260                         ch=*mptr++;
 261                         buffer[strlen(buffer)+1] = 0;
 262                         buffer[strlen(buffer)] = ch;
 263                         }
 264
 265                 if (buffer[0]=='^') do_help_subst(buffer);
 266
 267                 buffer[strlen(buffer)+1] = 0;
 268                 a=buffer[0];
 269                 strcpy(buffer,&buffer[1]);
 270                 }
 271
 272         else ch=*mptr++;
 273
 274         old=real;
 275         real=ch;
 276         if (ch<=0) goto FMTEND;
 277
 278         if ( ((ch==13)||(ch==10)) && (old!=13) && (old!=10) ) ch=32;
 279         if ( ((old==13)||(old==10)) && (isspace(real)) ) {
 280                 cprintf("\n");
 281                 c=1;
 282                 }
 283         if (ch>126) goto FMTA;
 284
 285         if (ch>32) {
 286         if ( ((strlen(aaa)+c)>(width-5)) && (strlen(aaa)>(width-5)) )
 287                 { cprintf("\n%s",aaa); c=strlen(aaa); aaa[0]=0;
 288                 }
 289          b=strlen(aaa); aaa[b]=ch; aaa[b+1]=0; }
 290         if (ch==32) {
 291                 if ((strlen(aaa)+c)>(width-5)) {
 292                         cprintf("\n");
 293                         c=1;
 294                         }
 295                 cprintf("%s ",aaa); ++c; c=c+strlen(aaa);
 296                 strcpy(aaa,"");
 297                 goto FMTA;
 298                 }
 299         if ((ch==13)||(ch==10)) {
 300                 cprintf("%s\n",aaa);
 301                 c=1;
 302                 strcpy(aaa,"");
 303                 goto FMTA;
 304                 }
 305         goto FMTA;
 306
 307 FMTEND: cprintf("\n");
 308         }
 309
 310
 311 /*
 312  * get a message off disk.
 313  *
 314  */
 315 void output_message(char *msgid, int mode, int headers_only)
 316 {
 317         long msg_num;
 318         int a,och,len;
 319         CIT_UBYTE ch, rch;
 320         CIT_UBYTE format_type,anon_flag;
 321         char buf[1024];
 322         long msg_len;
 323         int msg_ok = 0;
 324
 325         struct cdbdata *dmsgtext;
 326         char *mptr;
 327
 328         /* buffers needed for RFC822 translation */
 329         char suser[256];
 330         char luser[256];
 331         char snode[256];
 332         char lnode[256];
 333         char mid[256];
 334         long xtime;
 335         /* */
 336
 337         msg_num = atol(msgid);
 338
 339
 340         if ((!(CC->logged_in))&&(!(CC->internal_pgm))) {
 341                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 342                 return;
 343                 }
 344         if (CC->curr_rm < 0) {
 345                 cprintf("%d No room selected.\n",ERROR);
 346                 return;
 347                 }
 348
 349         /* We used to need to check in the current room's message list
 350          * to determine where the message's disk position.  We no longer need
 351          * to do this, but we do it anyway as a security measure, in order to
 352          * prevent rogue clients from reading messages not in the current room.
 353          */
 354
 355         msg_ok = 0;
 356         if (CC->num_msgs > 0) {
 357                 for (a=0; a<CC->num_msgs; ++a) {
 358                         if (MessageFromList(a) == msg_num) {
 359                                 msg_ok = 1;
 360                                 }
 361                         }
 362                 }
 363
 364         if (!msg_ok) {
 365                 cprintf("%d Message %ld is not in this room.\n",
 366                         ERROR, msg_num);
 367                 return;
 368                 }
 369
 370
 371         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msg_num, sizeof(long));
 372
 373         if (dmsgtext == NULL) {
 374                 cprintf("%d Can't find message %ld\n", ERROR+INTERNAL_ERROR);
 375                 return;
 376                 }
 377
 378         msg_len = (long) dmsgtext->len;
 379         mptr = dmsgtext->ptr;
 380         lprintf(9, "Returned message length is %ld\n", msg_len);
 381
 382         /* this loop spews out the whole message if we're doing raw format */
 383         if (mode == MT_RAW) {
 384                 cprintf("%d %ld\n", BINARY_FOLLOWS, msg_len);
 385                 client_write(dmsgtext->ptr, (int) msg_len);
 386                 cdb_free(dmsgtext);
 387                 return;
 388                 }
 389
 390         /* Otherwise, we'll start parsing it field by field... */
 391         ch = *mptr++;
 392         if (ch != 255) {
 393                 cprintf("%d Illegal message format on disk\n",
 394                         ERROR+INTERNAL_ERROR);
 395                 cdb_free(dmsgtext);
 396                 return;
 397                 }
 398
 399         anon_flag = *mptr++;
 400         format_type = *mptr++;
 401
 402         /* now for the user-mode message reading loops */
 403         cprintf("%d Message %ld:\n",LISTING_FOLLOWS,msg_num);
 404
 405         if (mode == MT_CITADEL) cprintf("type=%d\n",format_type);
 406
 407         if ( (anon_flag == MES_ANON) && (mode == MT_CITADEL) ) {
 408                 cprintf("nhdr=yes\n");
 409                 }
 410
 411         /* begin header processing loop for Citadel message format */
 412
 413         if (mode == MT_CITADEL) while(ch = *mptr++, (ch!='M' && ch!=0)) {
 414                 buf[0] = 0;
 415                 do {
 416                         buf[strlen(buf)+1] = 0;
 417                         rch = *mptr++;
 418                         buf[strlen(buf)] = rch;
 419                         } while (rch > 0);
 420
 421                 if (ch=='A') {
 422                         PerformUserHooks(buf, (-1L), EVT_OUTPUTMSG);
 423                         if (anon_flag==MES_ANON) cprintf("from=****");
 424                         else if (anon_flag==MES_AN2) cprintf("from=anonymous");
 425                         else cprintf("from=%s",buf);
 426                         if ((is_room_aide()) && ((anon_flag == MES_ANON)
 427                            || (anon_flag == MES_AN2)))
 428                                 cprintf(" [%s]",buf);
 429                         cprintf("\n");
 430                         }
 431                 else if (ch=='P') cprintf("path=%s\n",buf);
 432                 else if (ch=='U') cprintf("subj=%s\n",buf);
 433                 else if (ch=='I') cprintf("msgn=%s\n",buf);
 434                 else if (ch=='H') cprintf("hnod=%s\n",buf);
 435                 else if (ch=='O') cprintf("room=%s\n",buf);
 436                 else if (ch=='N') cprintf("node=%s\n",buf);
 437                 else if (ch=='R') cprintf("rcpt=%s\n",buf);
 438                 else if (ch=='T') cprintf("time=%s\n",buf);
 439                 /* else cprintf("fld%c=%s\n",ch,buf); */
 440                 }
 441
 442         /* begin header processing loop for RFC822 transfer format */
 443
 444         strcpy(suser, "");
 445         strcpy(luser, "");
 446         strcpy(snode, NODENAME);
 447         strcpy(lnode, HUMANNODE);
 448         if (mode == MT_RFC822) while(ch = *mptr++, (ch!='M' && ch!=0)) {
 449                 buf[0] = 0;
 450                 do {
 451                         buf[strlen(buf)+1] = 0;
 452                         rch = *mptr++;
 453                         buf[strlen(buf)] = rch;
 454                         } while (rch > 0);
 455
 456                 if (ch=='A') strcpy(luser, buf);
 457                 else if (ch=='P') {
 458                         cprintf("Path: %s\n",buf);
 459                         for (a=0; a<strlen(buf); ++a) {
 460                                 if (buf[a] == '!') {
 461                                         strcpy(buf,&buf[a+1]);
 462                                         a=0;
 463                                         }
 464                                 }
 465                         strcpy(suser, buf);
 466                         }
 467                 else if (ch=='U') cprintf("Subject: %s\n",buf);
 468                 else if (ch=='I') strcpy(mid, buf);
 469                 else if (ch=='H') strcpy(lnode, buf);
 470                 else if (ch=='O') cprintf("X-Citadel-Room: %s\n",buf);
 471                 else if (ch=='N') strcpy(snode, buf);
 472                 else if (ch=='R') cprintf("To: %s\n",buf);
 473                 else if (ch=='T')  {
 474                         xtime = atol(buf);
 475                         cprintf("Date: %s", asctime(localtime(&xtime)));
 476                         }
 477                 }
 478
 479         if (mode == MT_RFC822) {
 480                 if (!strcasecmp(snode, NODENAME)) {
 481                         strcpy(snode, FQDN);
 482                         }
 483                 cprintf("Message-ID: <%s@%s>\n", mid, snode);
 484                 PerformUserHooks(luser, (-1L), EVT_OUTPUTMSG);
 485                 cprintf("From: %s@%s (%s)\n",
 486                         suser, snode, luser);
 487                 cprintf("Organization: %s\n", lnode);
 488                 }
 489
 490         /* end header processing loop ... at this point, we're in the text */
 491
 492         if (ch==0) {
 493                 cprintf("text\n*** ?Message truncated\n000\n");
 494                 cdb_free(dmsgtext);
 495                 return;
 496                 }
 497
 498         if (headers_only) {
 499                 /* give 'em a length */
 500                 msg_len = 0L;
 501                 while(och=ch, ch = *mptr++, ch>0) {
 502                         ++msg_len;
 503                         }
 504                 cprintf("mlen=%ld\n", msg_len);
 505                 cprintf("000\n");
 506                 cdb_free(dmsgtext);
 507                 return;
 508                 }
 509
 510         /* signify start of msg text */
 511         if (mode == MT_CITADEL) cprintf("text\n");
 512         if (mode == MT_RFC822) cprintf("\n");
 513
 514         /* If the format type on disk is 1 (fixed-format), then we want
 515          * everything to be output completely literally ... regardless of
 516          * what message transfer format is in use.
 517          */
 518         if (format_type == 1) {
 519                 och = 0;
 520                 len = 0;
 521                 while(och=ch, ch = *mptr++, ch>0) {
 522                         if (ch == 13) ch = 10;
 523                         ++len;
 524                         /* if ((ch!=10)||(och!=10)) { */
 525                                 cprintf("%c", ch);
 526                                 if (ch==10) len = 0;
 527                                 /* } */
 528                         if (len>=250) {
 529                                 len = 0;
 530                                 /* cprintf("%c", ch); */
 531                                 cprintf("%c", 10);
 532                                 }
 533                         }
 534                 if (len!=0) cprintf("%c", 10);
 535                 }
 536         /* If the message on disk is format 0 (Citadel vari-format), we
 537          * output using the formatter at 80 columns.  This is the final output
 538          * form if the transfer format is RFC822, but if the transfer format
 539          * is Citadel proprietary, it'll still work, because the indentation
 540          * for new paragraphs is correct and the client will reformat the
 541          * message to the reader's screen width.
 542          */
 543         if (format_type == 0) {
 544                 memfmout(80,mptr,0);
 545                 }
 546
 547
 548         /* now we're done */
 549         cprintf("000\n");
 550         cdb_free(dmsgtext);
 551         }
 552
 553
 554 /*
 555  * display a message (mode 0 - Citadel proprietary)
 556  */
 557 void cmd_msg0(char *cmdbuf)
 558 {
 559         char msgid[256];
 560         int headers_only = 0;
 561
 562         extract(msgid,cmdbuf,0);
 563         headers_only = extract_int(cmdbuf,1);
 564
 565         output_message(msgid,MT_CITADEL,headers_only);
 566         }
 567
 568
 569 /*
 570  * display a message (mode 2 - RFC822)
 571  */
 572 void cmd_msg2(char *cmdbuf)
 573 {
 574         char msgid[256];
 575         int headers_only = 0;
 576
 577         extract(msgid,cmdbuf,0);
 578         headers_only = extract_int(cmdbuf,1);
 579
 580         output_message(msgid,MT_RFC822,headers_only);
 581         }
 582
 583 /*
 584  * display a message (mode 3 - IGnet raw format - internal programs only)
 585  */
 586 void cmd_msg3(char *cmdbuf)
 587 {
 588         char msgid[256];
 589         int headers_only = 0;
 590
 591         if (CC->internal_pgm == 0) {
 592                 cprintf("%d This command is for internal programs only.\n",
 593                         ERROR);
 594                 return;
 595                 }
 596
 597         extract(msgid,cmdbuf,0);
 598         headers_only = extract_int(cmdbuf,1);
 599
 600         output_message(msgid,MT_RAW,headers_only);
 601         }
 602
 603
 604
 605 /*
 606  * Message base operation to send a message to the master file
 607  * (returns new message number)
 608  */
 609 long send_message(char *message_in_memory,      /* pointer to buffer */
 610                 size_t message_length,          /* length of buffer */
 611                 int generate_id) {              /* 1 to generate an I field */
 612
 613         long newmsgid;
 614
 615         /* Get a new message number */
 616         newmsgid = get_new_message_number();
 617
 618         /* Write our little bundle of joy into the message base */
 619
 620         lprintf(9, "Storing message %ld\n", newmsgid);
 621         begin_critical_section(S_MSGMAIN);
 622         if ( cdb_store(CDB_MSGMAIN, &newmsgid, sizeof(long),
 623                         message_in_memory, message_length) < 0 ) {
 624                 lprintf(2, "Can't store message\n");
 625                 end_critical_section(S_MSGMAIN);
 626                 return 0L;
 627                 }
 628         end_critical_section(S_MSGMAIN);
 629
 630         /* Finally, return the pointers */
 631         return(newmsgid);
 632         }
 633
 634
 635
 636
 637
 638
 639 void loadtroom(void) {
 640         struct quickroom qrbuf;
 641         int a;
 642         unsigned newflags;
 643
 644         /* first try to locate the twit room */
 645         for (a=0; a<MAXROOMS; ++a) {
 646                 getroom(&qrbuf,a);
 647                 if (!strcasecmp(qrbuf.QRname,config.c_twitroom)) {
 648                         twitroom = a;
 649                         return;
 650                         }
 651                 }
 652
 653         /* if not found, try to create it  -  put it in the last slot */
 654         twitroom = get_free_room_slot(-1);
 655         if (twitroom>=0) {
 656                 newflags = create_room(twitroom,config.c_twitroom,0,"",0);
 657                 return;
 658                 }
 659
 660         /* as a last resort, point to Aide> */
 661         twitroom = 2;
 662         }
 663
 664
 665 /*
 666  * this is a simple file copy routine.
 667  */
 668 void copy_file(char *from, char *to)
 669 {
 670         FILE *ffp,*tfp;
 671         int a;
 672
 673         ffp=fopen(from,"r");
 674         if (ffp==NULL) return;
 675         tfp=fopen(to,"w");
 676         if (tfp==NULL) {
 677                 fclose(ffp);
 678                 return;
 679                 }
 680         while (a=getc(ffp), a>=0) {
 681                 putc(a,tfp);
 682                 }
 683         fclose(ffp);
 684         fclose(tfp);
 685         return;
 686         }
 687
 688
 689
 690 /*
 691  * message base operation to save a message and install its pointers
 692  */
 693 void save_message(char *mtmp,   /* file containing proper message */
 694                 char *rec,      /* Recipient (if mail) */
 695                 char mtsflag,   /* 0 for normal, 1 to force Aide> room */
 696                 int mailtype,   /* local or remote type, see citadel.h */
 697                 int generate_id) /* set to 1 to generate an 'I' field */
 698 {
 699         struct usersupp tempUS;
 700         char aaa[100];
 701         int hold_rm;
 702         struct cdbdata *cdbmb;
 703         long *dmailbox;
 704         int dnum_mails;
 705         long newmsgid;
 706         char *message_in_memory;
 707         struct stat statbuf;
 708         size_t templen;
 709         FILE *fp;
 710
 711         /* Measure the message */
 712         lprintf(9, "Measuring the message\n");
 713         stat(mtmp, &statbuf);
 714         templen = statbuf.st_size;
 715
 716         /* Now read it into memory */
 717         lprintf(9, "Allocating %ld bytes\n", templen);
 718         message_in_memory = (char *) malloc(templen);
 719         if (message_in_memory == NULL) {
 720                 lprintf(2, "Can't allocate memory to save message!\n");
 721                 return;
 722                 }
 723
 724         lprintf(9, "Reading it into memory\n");
 725         fp = fopen(mtmp, "rb");
 726         fread(message_in_memory, templen, 1, fp);
 727         fclose(fp);
 728
 729         newmsgid = send_message(message_in_memory, templen, generate_id);
 730         free(message_in_memory);
 731         if (newmsgid <= 0L) return;
 732         hold_rm=(-1);
 733
 734         /* If the user is a twit, move to the twit room for posting... */
 735         if (TWITDETECT) if (CC->usersupp.axlevel==2) {
 736                 if (twitroom<0) loadtroom();
 737                 hold_rm=CC->curr_rm;
 738                 CC->curr_rm=twitroom;
 739                 }
 740
 741         /* ...or if this message is destined for Aide> then go there. */
 742         if (mtsflag) {
 743                 hold_rm=CC->curr_rm;
 744                 CC->curr_rm=2;
 745                 }
 746
 747         /* This call to usergoto() changes rooms if necessary.  It also
 748          * causes the latest message list to be read into memory.
 749          */
 750         usergoto(CC->curr_rm,0);
 751
 752         /* Store the message pointer, but NOT for sent mail! */
 753         if (CC->curr_rm != 1) {
 754
 755                 /* read in the quickroom record, obtaining a lock... */
 756                 lgetroom(&CC->quickroom,CC->curr_rm);
 757                 get_msglist(CC->curr_rm);
 758
 759                 /* FIX here's where we have to to message expiry!! */
 760
 761                 /* Now add the new message */
 762                 CC->num_msgs = CC->num_msgs + 1;
 763                 CC->msglist = realloc(CC->msglist,
 764                         ((CC->num_msgs) * sizeof(long)) );
 765                 if (CC->msglist == NULL) {
 766                         lprintf(3, "ERROR can't realloc message list!\n");
 767                         }
 768                 SetMessageInList(CC->num_msgs - 1, newmsgid);
 769
 770                 /* Write it back to disk. */
 771                 put_msglist(CC->curr_rm);
 772
 773                 /* update quickroom */
 774                 CC->quickroom.QRhighest = newmsgid;
 775                 lputroom(&CC->quickroom,CC->curr_rm);
 776                 }
 777
 778         /* Bump this user's messages posted counter.  Also, if the user is a
 779          * twit, give them access to the twit room.
 780          */
 781         lgetuser(&CC->usersupp,CC->curr_user);
 782         CC->usersupp.posted = CC->usersupp.posted + 1;
 783         if (CC->curr_rm==twitroom) {
 784                 CC->usersupp.generation[twitroom] = CC->quickroom.QRgen;
 785                 }
 786         lputuser(&CC->usersupp, CC->curr_user);
 787
 788         /* If mail, there's still more to do, if not, skip it. */
 789         if ((CC->curr_rm!=1)||(mtsflag)) goto ENTFIN;
 790
 791         /* Network mail - send a copy to the network program. */
 792         if (mailtype!=M_LOCAL) {
 793                 sprintf(aaa,"./network/spoolin/nm.%d",getpid());
 794                 copy_file(mtmp,aaa);
 795                 system("exec nohup ./netproc >/dev/null 2>&1 &");
 796                 }
 797
 798         /* Local mail - put a copy in the recipient's mailbox. */
 799         /* FIX here's where we have to handle expiry, stuffed boxes, etc. */
 800         if (mailtype == M_LOCAL) {
 801                 if (lgetuser(&tempUS,rec)==0) {
 802
 803                         cdbmb = cdb_fetch(CDB_MAILBOXES,
 804                                         &tempUS.usernum, sizeof(long));
 805                         if (cdbmb != NULL) {
 806                                 memcpy(dmailbox, cdbmb->ptr, cdbmb->len);
 807                                 dnum_mails = cdbmb->len / sizeof(long);
 808                                 cdb_free(cdbmb);
 809                                 }
 810                         else {
 811                                 dmailbox = NULL;
 812                                 dnum_mails = 0;
 813                                 }
 814
 815                         ++dnum_mails;
 816                         if (dmailbox == NULL) {
 817                                 dmailbox = malloc(sizeof(long) * dnum_mails);
 818                                 }
 819                         else {
 820                                 dmailbox = realloc(dmailbox,
 821                                                 sizeof(long) * dnum_mails);
 822                                 }
 823
 824                         dmailbox[dnum_mails - 1] = newmsgid;
 825                         cdb_store(CDB_MAILBOXES, &tempUS.usernum, sizeof(long),
 826                                 dmailbox, (dnum_mails * sizeof(long)) );
 827                         lputuser(&tempUS,rec);
 828                         free(dmailbox);
 829                         }
 830                 }
 831
 832         /* If we've posted in a room other than the current room, then we
 833          * have to now go back to the current room...
 834          */
 835 ENTFIN: if (hold_rm!=(-1)) {
 836                 usergoto(hold_rm,0);
 837                 }
 838         unlink(mtmp);           /* delete the temporary file */
 839         }
 840
 841
 842 /*
 843  * Generate an administrative message and post it in the Aide> room.
 844  */
 845 void aide_message(char *text)
 846 {
 847         long now;
 848         FILE *fp;
 849
 850         time(&now);
 851         fp=fopen(CC->temp,"wb");
 852         fprintf(fp,"%c%c%c",255,MES_NORMAL,0);
 853         fprintf(fp,"Psysop%c",0);
 854         fprintf(fp,"T%ld%c",now,0);
 855         fprintf(fp,"ACitadel%c",0);
 856         fprintf(fp,"OAide%c",0);
 857         fprintf(fp,"N%s%c",NODENAME,0);
 858         fprintf(fp,"M%s\n%c",text,0);
 859         fclose(fp);
 860         save_message(CC->temp,"",1,M_LOCAL,1);
 861         syslog(LOG_NOTICE,text);
 862         }
 863
 864
 865
 866 /*
 867  * Build a binary message to be saved on disk.
 868  */
 869 void make_message(char *filename, struct usersupp *author, char *recipient, char *room, int type, int net_type, int format_type, char *fake_name)
 870                         /* temporary file name */
 871                         /* author's usersupp structure */
 872                         /* NULL if it's not mail */
 873                         /* room where it's going */
 874                         /* see MES_ types in header file */
 875                         /* local or remote type, see citadel.h */
 876                         /* format type (see citadel.h) */
 877 {
 878         FILE *fp;
 879         int a;
 880         long now;
 881         char dest_node[32];
 882         char buf[256];
 883
 884         /* Don't confuse the poor folks if it's not routed mail. */
 885         strcpy(dest_node, "");
 886
 887         /* If net_type is M_BINARY, split out the destination node. */
 888         if (net_type == M_BINARY) {
 889                 strcpy(dest_node,NODENAME);
 890                 for (a=0; a<strlen(recipient); ++a) {
 891                         if (recipient[a]=='@') {
 892                                 recipient[a]=0;
 893                                 strcpy(dest_node,&recipient[a+1]);
 894                                 }
 895                         }
 896                 }
 897
 898         /* if net_type is M_INTERNET, set the dest node to 'internet' */
 899         if (net_type == M_INTERNET) {
 900                 strcpy(dest_node,"internet");
 901                 }
 902
 903         while (isspace(recipient[strlen(recipient)-1]))
 904                 recipient[strlen(recipient)-1] = 0;
 905
 906         time(&now);
 907         fp=fopen(filename,"w");
 908         putc(255,fp);
 909         putc(type,fp);  /* Normal or anonymous, see MES_ flags */
 910         putc(format_type,fp);   /* Formatted or unformatted */
 911         fprintf(fp,"Pcit%ld%c",author->usernum,0);      /* path */
 912         fprintf(fp,"T%ld%c",now,0);                     /* date/time */
 913         if (fake_name[0])
 914            fprintf(fp,"A%s%c",fake_name,0);
 915         else
 916            fprintf(fp,"A%s%c",author->fullname,0);      /* author */
 917         fprintf(fp,"O%s%c",CC->quickroom.QRname,0);     /* room */
 918         fprintf(fp,"N%s%c",NODENAME,0);                 /* nodename */
 919         fprintf(fp,"H%s%c",HUMANNODE,0);                /* human nodename */
 920
 921         if (recipient[0]!=0) fprintf(fp,"R%s%c",recipient,0);
 922         if (dest_node[0]!=0) fprintf(fp,"D%s%c",dest_node,0);
 923
 924         putc('M',fp);
 925
 926         while (client_gets(buf), strcmp(buf,"000"))
 927         {
 928            fprintf(fp,"%s\n",buf);
 929         }
 930         syslog(LOG_INFO, "Closing message");
 931         putc(0,fp);
 932         fclose(fp);
 933         }
 934
 935
 936
 937
 938
 939 /*
 940  * message entry  -  mode 0 (normal) <bc>
 941  */
 942 void cmd_ent0(char *entargs)
 943 {
 944         int post = 0;
 945         char recipient[256];
 946         int anon_flag = 0;
 947         int format_type = 0;
 948         char newusername[256];          /* <bc> */
 949
 950         int a,b,e;
 951         int mtsflag = 0;
 952         struct usersupp tempUS;
 953         char buf[256];
 954
 955         post = extract_int(entargs,0);
 956         extract(recipient,entargs,1);
 957         anon_flag = extract_int(entargs,2);
 958         format_type = extract_int(entargs,3);
 959
 960         /* first check to make sure the request is valid. */
 961
 962         if (!(CC->logged_in)) {
 963                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 964                 return;
 965                 }
 966         if (CC->curr_rm < 0) {
 967                 cprintf("%d No room selected.\n",ERROR);
 968                 return;
 969                 }
 970         if ((CC->usersupp.axlevel<2)&&(CC->curr_rm!=1)) {
 971                 cprintf("%d Need to be validated to enter (except in Mail> to sysop)\n",
 972                         ERROR+HIGHER_ACCESS_REQUIRED);
 973                 return;
 974                 }
 975         if ((CC->usersupp.axlevel<4)&&(CC->quickroom.QRflags&QR_NETWORK)) {
 976                 cprintf("%d Need net privileges to enter here.\n",
 977                         ERROR+HIGHER_ACCESS_REQUIRED);
 978                 return;
 979                 }
 980         if ((CC->usersupp.axlevel<6)&&(CC->quickroom.QRflags&QR_READONLY)) {
 981                 cprintf("%d Sorry, this is a read-only room.\n",
 982                         ERROR+HIGHER_ACCESS_REQUIRED);
 983                 return;
 984                 }
 985
 986         mtsflag=0;
 987
 988
 989         if (post==2) {                  /* <bc> */
 990            if (CC->usersupp.axlevel<6)
 991            {
 992               cprintf("%d\nYou don't have sufficient permission to do an aide post.\n", ERROR+HIGHER_ACCESS_REQUIRED);
 993               return;
 994            }
 995            extract(newusername,entargs,4);
 996            bzero(CC->fake_postname, 32);
 997            strcpy(CC->fake_postname, newusername);
 998            cprintf("%d Ok\n",OK);
 999            return;
1000         }
1001
1002         CC->cs_flags |= CS_POSTING;
1003
1004         buf[0]=0;
1005         if (CC->curr_rm==1) {
1006                 if (CC->usersupp.axlevel>=2) {
1007                         strcpy(buf,recipient);
1008                         }
1009                 else strcpy(buf,"sysop");
1010                 lprintf(9, "aliasing...\n");
1011                 e=alias(buf);                   /* alias and mail type */
1012                 lprintf(9,"...type is %d\n", e);
1013                 if ((buf[0]==0) || (e==M_ERROR)) {
1014                         cprintf("%d Unknown address - cannot send message.\n",
1015                                 ERROR+NO_SUCH_USER);
1016                         return;
1017                         }
1018                 if ((e!=M_LOCAL)&&(CC->usersupp.axlevel<4)) {
1019                         cprintf("%d Net privileges required for network mail.\n",
1020                                 ERROR+HIGHER_ACCESS_REQUIRED);
1021                         return;
1022                         }
1023                 if ((RESTRICT_INTERNET==1)&&(e==M_INTERNET)
1024                    &&((CC->usersupp.flags&US_INTERNET)==0)
1025                    &&(!CC->internal_pgm) ) {
1026                         cprintf("%d You don't have access to Internet mail.\n",
1027                                 ERROR+HIGHER_ACCESS_REQUIRED);
1028                         return;
1029                         }
1030                 if (!strcasecmp(buf,"sysop")) {
1031                         mtsflag=1;
1032                         goto SKFALL;
1033                         }
1034                 if (e!=M_LOCAL) goto SKFALL;    /* don't search local file  */
1035                 if (!strcasecmp(buf,CC->usersupp.fullname)) {
1036                         cprintf("%d Can't send mail to yourself!\n",
1037                                 ERROR+NO_SUCH_USER);
1038                         return;
1039                         }
1040
1041                 /* Check to make sure the user exists; also get the correct
1042                 * upper/lower casing of the name.
1043                 */
1044                 lprintf(9, "checking validity of %s\n", buf);
1045                 a = getuser(&tempUS,buf);
1046                 lprintf(9, "getuser() returned %d\n", a);
1047                 if (a != 0) {
1048                         cprintf("%d No such user.\n",ERROR+NO_SUCH_USER);
1049                         return;
1050                         }
1051                 strcpy(buf,tempUS.fullname);
1052                 }
1053
1054 SKFALL: b=MES_NORMAL;
1055         if (CC->quickroom.QRflags&QR_ANONONLY) b=MES_ANON;
1056         if (CC->quickroom.QRflags&QR_ANON2) {
1057                 if (anon_flag==1) b=MES_AN2;
1058                 }
1059         if (CC->curr_rm!=1) buf[0]=0;
1060
1061         /* If we're only checking the validity of the request, return
1062          * success without creating the message.
1063          */
1064         if (post==0) {
1065                 cprintf("%d %s\n",OK,buf);
1066                 return;
1067                 }
1068
1069         cprintf("%d send message\n",SEND_LISTING);
1070         if (CC->fake_postname[0])
1071            make_message(CC->temp,&CC->usersupp,buf,CC->quickroom.QRname,b,e,format_type, CC->fake_postname);
1072         else
1073            if (CC->fake_username[0])
1074               make_message(CC->temp,&CC->usersupp,buf,CC->quickroom.QRname,b,e,format_type, CC->fake_username);
1075            else
1076               make_message(CC->temp,&CC->usersupp,buf,CC->quickroom.QRname,b,e,format_type, "");
1077         save_message(CC->temp,buf,mtsflag,e,1);
1078         CC->fake_postname[0]='\0';
1079         return;
1080         }
1081
1082
1083
1084 /*
1085  * message entry - mode 3 (raw)
1086  */
1087 void cmd_ent3(char *entargs)
1088 {
1089         char recp[256];
1090         char buf[256];
1091         int a, e;
1092         struct usersupp tempUS;
1093         long msglen;
1094         long bloklen;
1095         FILE *fp;
1096
1097         if (CC->internal_pgm == 0) {
1098                 cprintf("%d This command is for internal programs only.\n",
1099                         ERROR);
1100                 return;
1101                 }
1102
1103         if (CC->curr_rm < 0) {
1104                 cprintf("%d No room selected.\n",ERROR);
1105                 return;
1106                 }
1107
1108         if (CC->curr_rm == 1) { /* If we're in Mail, check the recipient */
1109                 extract(recp, entargs, 1);
1110                 lprintf(9, "aliasing...\n");
1111                 e=alias(recp);                  /* alias and mail type */
1112                 lprintf(9,"...type is %d\n", e);
1113                 if ((buf[0]==0) || (e==M_ERROR)) {
1114                         cprintf("%d Unknown address - cannot send message.\n",
1115                                 ERROR+NO_SUCH_USER);
1116                         return;
1117                         }
1118                 if (e == M_LOCAL) {
1119                         a = getuser(&tempUS,recp);
1120                         if (a!=0) {
1121                                 cprintf("%d No such user.\n", ERROR+NO_SUCH_USER);
1122                                 return;
1123                                 }
1124                         }
1125                 }
1126
1127         /* At this point, message has been approved. */
1128         if (extract_int(entargs, 0) == 0) {
1129                 cprintf("%d OK to send\n", OK);
1130                 return;
1131                 }
1132
1133         /* open a temp file to hold the message */
1134         fp = fopen(CC->temp, "wb");
1135         if (fp == NULL) {
1136                 cprintf("%d Cannot open %s: %s\n",
1137                         ERROR + INTERNAL_ERROR,
1138                         CC->temp, strerror(errno) );
1139                 return;
1140                 }
1141
1142         msglen = extract_long(entargs, 2);
1143         cprintf("%d %ld\n", SEND_BINARY, msglen);
1144         while(msglen > 0L) {
1145                 bloklen = ((msglen >= 255L) ? 255 : msglen);
1146                 client_read(buf, (int)bloklen );
1147                 fwrite(buf, (int)bloklen, 1, fp);
1148                 msglen = msglen - bloklen;
1149                 }
1150         fclose(fp);
1151
1152         save_message(CC->temp, recp, 0, e, 0);
1153         }
1154
1155
1156 /*
1157  * Delete message from current room
1158  */
1159 void cmd_dele(char *delstr)
1160 {
1161         long delnum;
1162         int a,ok;
1163
1164         getuser(&CC->usersupp,CC->curr_user);
1165         if ((CC->usersupp.axlevel < 6)
1166            && (CC->usersupp.usernum != CC->quickroom.QRroomaide)) {
1167                 cprintf("%d Higher access required.\n",
1168                         ERROR+HIGHER_ACCESS_REQUIRED);
1169                 return;
1170                 }
1171
1172         delnum = atol(delstr);
1173         if (CC->curr_rm==1) {
1174                 cprintf("%d Can't delete mail.\n",ERROR);
1175                 return;
1176                 }
1177
1178         /* get room records, obtaining a lock... */
1179         lgetroom(&CC->quickroom,CC->curr_rm);
1180         get_msglist(CC->curr_rm);
1181
1182         ok = 0;
1183         if (CC->num_msgs > 0) for (a=0; a<(CC->num_msgs); ++a) {
1184                 if (MessageFromList(a) == delnum) {
1185                         SetMessageInList(a, 0L);
1186                         ok = 1;
1187                         }
1188                 }
1189
1190         CC->num_msgs = sort_msglist(CC->msglist, CC->num_msgs);
1191         CC->quickroom.QRhighest = MessageFromList(CC->num_msgs - 1);
1192
1193         put_msglist(CC->curr_rm);
1194         lputroom(&CC->quickroom,CC->curr_rm);
1195         if (ok==1) {
1196                 cdb_delete(CDB_MSGMAIN, &delnum, sizeof(long));
1197                 cprintf("%d Message deleted.\n",OK);
1198                 }
1199         else cprintf("%d No message %ld.\n",ERROR,delnum);
1200         }
1201
1202
1203 /*
1204  * move a message to another room
1205  */
1206 void cmd_move(char *args)
1207 {
1208         long num;
1209         char targ[32];
1210         int a;
1211         int targ_slot;
1212         struct quickroom qtemp;
1213         int foundit;
1214         struct cdbdata *cdbtarg;
1215         long *targmsgs;
1216         int targ_count;
1217
1218         num = extract_long(args,0);
1219         extract(targ,args,1);
1220
1221         if (CC->curr_rm < 0) {
1222                 cprintf("%d no room\n",ERROR);
1223                 return;
1224                 }
1225
1226         getuser(&CC->usersupp,CC->curr_user);
1227         if ((CC->usersupp.axlevel < 6)
1228            && (CC->usersupp.usernum != CC->quickroom.QRroomaide)) {
1229                 cprintf("%d Higher access required.\n",
1230                         ERROR+HIGHER_ACCESS_REQUIRED);
1231                 return;
1232                 }
1233
1234         targ_slot = (-1);
1235         for (a=0; a<MAXROOMS; ++a) {
1236                 getroom(&qtemp,a);
1237                 if (!strcasecmp(qtemp.QRname,targ)) {
1238                         targ_slot = a;
1239                         a = MAXROOMS;
1240                         }
1241                 }
1242         if (targ_slot < 0) {
1243                 cprintf("%d '%s' does not exist.\n",ERROR,targ);
1244                 return;
1245                 }
1246
1247         /* yank the message out of the current room... */
1248         lgetroom(&CC->quickroom,CC->curr_rm);
1249         get_msglist(CC->curr_rm);
1250
1251         foundit = 0;
1252         for (a=0; a<(CC->num_msgs); ++a) {
1253                 if (MessageFromList(a) == num) {
1254                         foundit = 1;
1255                         SetMessageInList(a, 0L);
1256                         }
1257                 }
1258         if (foundit) {
1259                 CC->num_msgs = sort_msglist(CC->msglist, CC->num_msgs);
1260                 put_msglist(CC->curr_rm);
1261                 CC->quickroom.QRhighest = MessageFromList((CC->num_msgs)-1);
1262                 }
1263         lputroom(&CC->quickroom,CC->curr_rm);
1264         if (!foundit) {
1265                 cprintf("%d msg %ld does not exist.\n",ERROR,num);
1266                 return;
1267                 }
1268
1269         /* put the message into the target room */
1270         lgetroom(&qtemp,targ_slot);
1271         cdbtarg = cdb_fetch(CDB_MSGLISTS, &targ_slot, sizeof(int));
1272         if (cdbtarg != NULL) {
1273                 targmsgs = malloc(cdbtarg->len);
1274                 memcpy(targmsgs, cdbtarg->ptr, cdbtarg->len);
1275                 targ_count = cdbtarg->len / sizeof(long);
1276                 cdb_free(cdbtarg);
1277                 }
1278         else {
1279                 targmsgs = NULL;
1280                 targ_count = 0;
1281                 }
1282
1283         ++targ_count;
1284         targmsgs = realloc(targmsgs, ((CC->num_msgs) * sizeof(long)));
1285         targmsgs[targ_count - 1] = num;
1286         targ_count = sort_msglist(targmsgs, targ_count);
1287         qtemp.QRhighest = targmsgs[targ_count - 1];
1288         cdb_store(CDB_MSGLISTS, &targ_slot, sizeof(int),
1289                         targmsgs, targ_count * sizeof(long));
1290         free(targmsgs);
1291         lputroom(&qtemp,targ_slot);
1292         cprintf("%d ok\n",OK);
1293         }