citadel/msgbase.c

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