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