citadel/msgbase.c

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