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