citadel/msgbase.c

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