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