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