citadel/msgbase.c

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