webcit/messages.c

   1 /*
   2  * $Id$
   3  *
   4  * Functions which deal with the fetching and displaying of messages.
   5  *
   6  */
   7
   8 #include <ctype.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <sys/types.h>
  15 #include <sys/wait.h>
  16 #include <sys/socket.h>
  17 #include <limits.h>
  18 #include <netinet/in.h>
  19 #include <netdb.h>
  20 #include <string.h>
  21 #include <pwd.h>
  22 #include <errno.h>
  23 #include <stdarg.h>
  24 #include <pthread.h>
  25 #include <signal.h>
  26 #include "webcit.h"
  27
  28
  29 /*
  30  * Look for URL's embedded in a buffer and make them linkable.  We use a
  31  * target window in order to keep the BBS session in its own window.
  32  */
  33 void url(buf)
  34 char buf[];
  35 {
  36
  37         int pos;
  38         int start, end;
  39         char ench;
  40         char urlbuf[256];
  41         char outbuf[1024];
  42
  43         start = (-1);
  44         end = strlen(buf);
  45         ench = 0;
  46
  47         for (pos = 0; pos < strlen(buf); ++pos) {
  48                 if (!strncasecmp(&buf[pos], "http://", 7))
  49                         start = pos;
  50                 if (!strncasecmp(&buf[pos], "ftp://", 6))
  51                         start = pos;
  52         }
  53
  54         if (start < 0)
  55                 return;
  56
  57         if ((start > 0) && (buf[start - 1] == '<'))
  58                 ench = '>';
  59         if ((start > 0) && (buf[start - 1] == '['))
  60                 ench = ']';
  61         if ((start > 0) && (buf[start - 1] == '('))
  62                 ench = ')';
  63         if ((start > 0) && (buf[start - 1] == '{'))
  64                 ench = '}';
  65
  66         for (pos = strlen(buf); pos > start; --pos) {
  67                 if ((buf[pos] == ' ') || (buf[pos] == ench))
  68                         end = pos;
  69         }
  70
  71         strncpy(urlbuf, &buf[start], end - start);
  72         urlbuf[end - start] = 0;
  73
  74
  75         strncpy(outbuf, buf, start);
  76         sprintf(&outbuf[start], "%cA HREF=%c%s%c TARGET=%c%s%c%c%s%c/A%c",
  77                 LB, QU, urlbuf, QU, QU, TARGET, QU, RB, urlbuf, LB, RB);
  78         strcat(outbuf, &buf[end]);
  79         if ( strlen(outbuf) < 250 )
  80                 strcpy(buf, outbuf);
  81 }
  82
  83
  84 void read_message(long msgnum, int is_summary) {
  85         char buf[256];
  86         char m_subject[256];
  87         char from[256];
  88         char node[256];
  89         char rfca[256];
  90         char reply_to[512];
  91         char now[256];
  92         int format_type = 0;
  93         int nhdr = 0;
  94         int bq = 0;
  95
  96         strcpy(from, "");
  97         strcpy(node, "");
  98         strcpy(rfca, "");
  99         strcpy(reply_to, "");
 100
 101         sprintf(buf, "MSG0 %ld", msgnum);
 102         serv_puts(buf);
 103         serv_gets(buf);
 104         if (buf[0] != '1') {
 105                 wprintf("<STRONG>ERROR:</STRONG> %s<BR>\n", &buf[4]);
 106                 return;
 107         }
 108         wprintf("<TABLE WIDTH=100%% BORDER=0 CELLSPACING=0 CELLPADDING=1 BGCOLOR=CCCCCC><TR><TD>\n");
 109         wprintf("<FONT ");
 110         if (!is_summary) wprintf("SIZE=+1 ");
 111         wprintf("COLOR=\"000000\"> ");
 112         strcpy(m_subject, "");
 113
 114         while (serv_gets(buf), strncasecmp(buf, "text", 4)) {
 115                 if (!strncasecmp(buf, "nhdr=yes", 8))
 116                         nhdr = 1;
 117                 if (nhdr == 1)
 118                         buf[0] = '_';
 119                 if (!strncasecmp(buf, "type=", 5))
 120                         format_type = atoi(&buf[5]);
 121                 if (!strncasecmp(buf, "from=", 5)) {
 122                         strcpy(from, &buf[5]);
 123                         wprintf("from <A HREF=\"/showuser&who=");
 124                         urlescputs(from);
 125                         wprintf("\">");
 126                         escputs(from);
 127                         wprintf("</A> ");
 128                 }
 129                 if (!strncasecmp(buf, "subj=", 5))
 130                         strcpy(m_subject, &buf[5]);
 131                 if ((!strncasecmp(buf, "hnod=", 5))
 132                     && (strcasecmp(&buf[5], serv_info.serv_humannode)))
 133                         wprintf("(%s) ", &buf[5]);
 134                 if ((!strncasecmp(buf, "room=", 5))
 135                     && (strcasecmp(&buf[5], WC->wc_roomname)))
 136                         wprintf("in %s> ", &buf[5]);
 137                 if (!strncasecmp(buf, "rfca=", 5)) {
 138                         strcpy(rfca, &buf[5]);
 139                         wprintf("&lt;");
 140                         escputs(rfca);
 141                         wprintf("&gt; ");
 142                 }
 143
 144                 if (!strncasecmp(buf, "node=", 5)) {
 145                         if ( ((WC->room_flags & QR_NETWORK)
 146                         || ((strcasecmp(&buf[5], serv_info.serv_nodename)
 147                         && (strcasecmp(&buf[5], serv_info.serv_fqdn)))))
 148                         && (strlen(rfca)==0)
 149                         ) {
 150                                 wprintf("@%s ", &buf[5]);
 151                         }
 152                 }
 153                 if (!strncasecmp(buf, "rcpt=", 5))
 154                         wprintf("to %s ", &buf[5]);
 155                 if (!strncasecmp(buf, "time=", 5)) {
 156                         fmt_date(now, atol(&buf[5]));
 157                         wprintf("%s ", now);
 158                 }
 159         }
 160
 161
 162         /* Generate a reply-to address */
 163         if (strlen(rfca) > 0) {
 164                 strcpy(reply_to, rfca);
 165         }
 166         else {
 167                 if (strlen(node) > 0) {
 168                         snprintf(reply_to, sizeof(reply_to), "%s @ %s",
 169                                 from, node);
 170                 }
 171                 else {
 172                         snprintf(reply_to, sizeof(reply_to), "%s", from);
 173                 }
 174         }
 175
 176         if (nhdr == 1)
 177                 wprintf("****");
 178         wprintf("</FONT></TD>");
 179
 180         /* begin right-hand toolbar */
 181         wprintf("<TD ALIGN=RIGHT>\n"
 182                 "<TABLE BORDER=0><TR>\n");
 183
 184         if (is_summary) {
 185                 wprintf("<TD BGCOLOR=\"AAAADD\">"
 186                         "<A HREF=\"/readfwd?startmsg=%ld", msgnum);
 187                 wprintf("&maxmsgs=1&summary=0\">Read</A>"
 188                         "</TD>\n", msgnum);
 189         }
 190
 191         wprintf("<TD BGCOLOR=\"AAAADD\">"
 192                 "<A HREF=\"/display_enter?recp=");
 193         urlescputs(reply_to);
 194         wprintf("\"><FONT SIZE=-1>Reply</FONT></A>"
 195                 "</TD>\n", msgnum);
 196
 197         if (WC->is_room_aide) {
 198                 wprintf("<TD BGCOLOR=\"AAAADD\">"
 199                         "<A HREF=\"/confirm_move_msg"
 200                         "&msgid=%ld"
 201                         "\"><FONT SIZE=-1>Move</FONT></A>"
 202                         "</TD>\n", msgnum);
 203
 204                 wprintf("<TD BGCOLOR=\"AAAADD\">"
 205                         "<A HREF=\"/delete_msg"
 206                         "&msgid=%ld\""
 207                         "onClick=\"return confirm('Delete this message?');\""
 208                         "><FONT SIZE=-1>Del</FONT></A>"
 209                         "</TD>\n", msgnum);
 210         }
 211
 212         wprintf("</TR></TABLE>\n"
 213                 "</TD>\n");
 214
 215         /* end right-hand toolbar */
 216
 217
 218         if (strlen(m_subject) > 0) {
 219                 wprintf("<TR><TD><FONT COLOR=\"FFFFFF\">"
 220                         "Subject: %s</FONT>"
 221                         "</TD><TD>&nbsp;</TD></TR>\n", m_subject);
 222         }
 223
 224         wprintf("</TR></TABLE>\n");
 225
 226         if (is_summary) {
 227                 while (serv_gets(buf), strcmp(buf, "000")) ;
 228                 return;
 229         }
 230
 231         if (format_type == 0) {
 232                 fmout(NULL);
 233         } else {
 234                 while (serv_gets(buf), strcmp(buf, "000")) {
 235                         while ((strlen(buf) > 0) && (isspace(buf[strlen(buf) - 1])))
 236                                 buf[strlen(buf) - 1] = 0;
 237                         if ((bq == 0) &&
 238                             ((!strncmp(buf, ">", 1)) || (!strncmp(buf, " >", 2)) || (!strncmp(buf, " :-)", 4)))) {
 239                                 wprintf("<FONT COLOR=\"000044\"><I>");
 240                                 bq = 1;
 241                         } else if ((bq == 1) &&
 242                                    (strncmp(buf, ">", 1)) && (strncmp(buf, " >", 2)) && (strncmp(buf, " :-)", 4))) {
 243                                 wprintf("</FONT></I>");
 244                                 bq = 0;
 245                         }
 246                         wprintf("<TT>");
 247                         url(buf);
 248                         escputs(buf);
 249                         wprintf("</TT><BR>\n");
 250                 }
 251         }
 252         wprintf("</I><BR>");
 253 }
 254
 255
 256
 257 /*
 258  * load message pointers from the server
 259  */
 260 int load_msg_ptrs(servcmd)
 261 char *servcmd;
 262 {
 263         char buf[256];
 264         int nummsgs;
 265
 266         nummsgs = 0;
 267         serv_puts(servcmd);
 268         serv_gets(buf);
 269         if (buf[0] != '1') {
 270                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 271                 return (nummsgs);
 272         }
 273         while (serv_gets(buf), strcmp(buf, "000")) {
 274                 WC->msgarr[nummsgs] = atol(buf);
 275                 ++nummsgs;
 276         }
 277         return (nummsgs);
 278 }
 279
 280
 281 /*
 282  * command loop for reading messages
 283  */
 284 void readloop(char *oper)
 285 {
 286         char cmd[256];
 287         int a, b;
 288         int nummsgs;
 289         long startmsg;
 290         int maxmsgs;
 291         int num_displayed = 0;
 292         int is_summary = 0;
 293         int remaining_messages;
 294         int lo, hi;
 295         int lowest_displayed = 0;
 296         int highest_displayed = 0;
 297
 298         startmsg = atol(bstr("startmsg"));
 299         maxmsgs = atoi(bstr("maxmsgs"));
 300         is_summary = atoi(bstr("summary"));
 301         if (maxmsgs == 0) maxmsgs = 20;
 302
 303         output_headers(1);
 304
 305         if (!strcmp(oper, "readnew")) {
 306                 strcpy(cmd, "MSGS NEW");
 307         } else if (!strcmp(oper, "readold")) {
 308                 strcpy(cmd, "MSGS OLD");
 309         } else {
 310                 strcpy(cmd, "MSGS ALL");
 311         }
 312
 313         nummsgs = load_msg_ptrs(cmd);
 314         if (nummsgs == 0) {
 315                 if (!strcmp(oper, "readnew")) {
 316                         wprintf("<EM>No new messages in this room.</EM>\n");
 317                 } else if (!strcmp(oper, "readold")) {
 318                         wprintf("<EM>No old messages in this room.</EM>\n");
 319                 } else {
 320                         wprintf("<EM>This room is empty.</EM>\n");
 321                 }
 322                 goto DONE;
 323         }
 324
 325         if (startmsg == 0L) startmsg = WC->msgarr[0];
 326         remaining_messages = 0;
 327
 328         for (a = 0; a < nummsgs; ++a) {
 329                 if (WC->msgarr[a] >= startmsg) {
 330                         ++remaining_messages;
 331                 }
 332         }
 333
 334         for (a = 0; ( (a < nummsgs) && (num_displayed < maxmsgs) ) ; ++a) {
 335                 if (WC->msgarr[a] >= startmsg) {
 336
 337                         read_message(WC->msgarr[a], is_summary);
 338                         if (lowest_displayed == 0) lowest_displayed = a;
 339                         highest_displayed = a;
 340                         if (is_summary) wprintf("<BR>");
 341
 342                         ++num_displayed;
 343                         --remaining_messages;
 344                 }
 345         }
 346
 347         /* Bump these because although we're thinking in zero base, the user
 348          * is a drooling idiot and is thinking in one base.
 349          */
 350         ++lowest_displayed;
 351         ++highest_displayed;
 352
 353         /*
 354          * If we're not currently looking at ALL requested
 355          * messages, then display the selector bar
 356          */
 357         if (num_displayed < nummsgs) {
 358
 359                 wprintf("<CENTER>"
 360                         "<TABLE BORDER=0 WIDTH=100%% BGCOLOR=DDDDDD><TR><TD>"
 361                         "You are reading #%d-%d of %d messages.</TD>\n"
 362                         "<TD ALIGN=RIGHT><FONT SIZE=+1>",
 363                         lowest_displayed, highest_displayed, nummsgs);
 364
 365                 for (b=0; b<nummsgs; b = b + maxmsgs) {
 366                 lo = b+1;
 367                 hi = b+maxmsgs+1;
 368                 if (hi > nummsgs) hi = nummsgs;
 369                         if (WC->msgarr[b] != startmsg) {
 370                                 wprintf("<A HREF=\"/%s"
 371                                         "?startmsg=%ld"
 372                                         "&maxmsgs=%d"
 373                                         "&summary=%d\">"
 374                                         "%d-%d</A> \n",
 375                                                 oper,
 376                                                 WC->msgarr[b],
 377                                                 maxmsgs,
 378                                                 is_summary,
 379                                                 lo, hi);
 380                         }
 381                         else {
 382                                 wprintf("%d-%d \n", lo, hi);
 383                         }
 384
 385                 }
 386                 wprintf("<A HREF=\"/%s?startmsg=%ld"
 387                         "&maxmsgs=999999&summary=%d\">"
 388                         "ALL"
 389                         "</A>&nbsp;&nbsp;&nbsp;",
 390                         oper,
 391                         WC->msgarr[0], is_summary);
 392                 wprintf("</TD></TR></TABLE></CENTER><HR>\n");
 393         }
 394
 395 DONE:   wDumpContent(1);
 396 }
 397
 398
 399
 400
 401 /*
 402  * Post message (or don't post message)
 403  *
 404  * Note regarding the "dont_post" variable:
 405  * A random value (actually, it's just a timestamp) is inserted as a hidden
 406  * field called "postseq" when the display_enter page is generated.  This
 407  * value is checked when posting, using the static variable dont_post.  If a
 408  * user attempts to post twice using the same dont_post value, the message is
 409  * discarded.  This prevents the accidental double-saving of the same message
 410  * if the user happens to click the browser "back" button.
 411  */
 412 void post_message(void)
 413 {
 414         char buf[256];
 415         static long dont_post = (-1L);
 416
 417         output_headers(1);
 418
 419         wprintf("<FONT FACE=\"Arial,Helvetica,sans-serif\">");
 420         strcpy(buf, bstr("sc"));
 421         if (strcasecmp(buf, "Save message")) {
 422                 wprintf("Cancelled.  Message was not posted.<BR>\n");
 423         } else if (atol(bstr("postseq")) == dont_post) {
 424                 wprintf("Automatically cancelled because you have already "
 425                         "saved this message.<BR>\n");
 426         } else {
 427                 sprintf(buf, "ENT0 1|%s|0|0", bstr("recp"));
 428                 serv_puts(buf);
 429                 serv_gets(buf);
 430                 if (buf[0] == '4') {
 431                         text_to_server(bstr("msgtext"));
 432                         serv_puts("000");
 433                         wprintf("Message has been posted.<BR>\n");
 434                         dont_post = atol(bstr("postseq"));
 435                 } else {
 436                         wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 437                 }
 438         }
 439
 440         wDumpContent(1);
 441 }
 442
 443
 444
 445
 446
 447
 448
 449
 450 /*
 451  * prompt for a recipient (to be called from display_enter() only)
 452  */
 453 void prompt_for_recipient()
 454 {
 455
 456         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>");
 457         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 458         wprintf("<B>Send private e-mail</B>\n");
 459         wprintf("</FONT></TD></TR></TABLE>\n");
 460
 461         wprintf("<CENTER>");
 462         wprintf("<FORM METHOD=\"POST\" ACTION=\"/display_enter\">\n");
 463         wprintf("Enter recipient: ");
 464         wprintf("<INPUT TYPE=\"text\" NAME=\"recp\" MAXLENGTH=\"64\"><BR>\n");
 465         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Enter message\">");
 466         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">");
 467         wprintf("</FORM></CENTER>\n");
 468 }
 469
 470
 471
 472 /*
 473  * display the message entry screen
 474  */
 475 void display_enter(void)
 476 {
 477         char buf[256];
 478         long now;
 479         struct tm *tm;
 480
 481         output_headers(1);
 482
 483         wprintf("<FACE=\"Arial,Helvetica,sans-serif\">");
 484
 485         sprintf(buf, "ENT0 0|%s|0|0", bstr("recp"));
 486         serv_puts(buf);
 487         serv_gets(buf);
 488
 489         if (!strncmp(buf, "570", 3)) {
 490                 if (strlen(bstr("recp")) > 0) {
 491                         wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 492                 }
 493                 prompt_for_recipient();
 494                 goto DONE;
 495         }
 496         if (buf[0] != '2') {
 497                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 498                 goto DONE;
 499         }
 500
 501         now = time(NULL);
 502         tm = (struct tm *) localtime(&now);
 503         strcpy(buf, (char *) asctime(tm));
 504         buf[strlen(buf) - 1] = 0;
 505         strcpy(&buf[16], &buf[19]);
 506         wprintf("</CENTER><FONT COLOR=\"440000\"><B> %s ", &buf[4]);
 507         wprintf("from %s ", WC->wc_username);
 508         if (strlen(bstr("recp")) > 0)
 509                 wprintf("to %s ", bstr("recp"));
 510         wprintf("in %s&gt; ", WC->wc_roomname);
 511         wprintf("</B></FONT><BR><CENTER>\n");
 512
 513         wprintf("<FORM METHOD=\"POST\" ACTION=\"/post\">\n");
 514         wprintf("<INPUT TYPE=\"hidden\" NAME=\"recp\" VALUE=\"%s\">\n",
 515                 bstr("recp"));
 516         wprintf("<INPUT TYPE=\"hidden\" NAME=\"postseq\" VALUE=\"%ld\">\n",
 517                 now);
 518         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save message\">"
 519                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\"><BR>\n");
 520
 521         wprintf("<TEXTAREA NAME=\"msgtext\" wrap=soft ROWS=30 COLS=80 "
 522                 "WIDTH=80></TEXTAREA><P>\n");
 523
 524         wprintf("</FORM></CENTER>\n");
 525 DONE:   wDumpContent(1);
 526         wprintf("</FONT>");
 527 }
 528
 529
 530
 531
 532
 533
 534
 535
 536 void delete_msg(void)
 537 {
 538         long msgid;
 539         char buf[256];
 540
 541         msgid = atol(bstr("msgid"));
 542
 543         output_headers(1);
 544
 545         sprintf(buf, "DELE %ld", msgid);
 546         serv_puts(buf);
 547         serv_gets(buf);
 548         wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 549
 550         wDumpContent(1);
 551 }
 552
 553
 554
 555
 556 /*
 557  * Confirm move of a message
 558  */
 559 void confirm_move_msg(void)
 560 {
 561         long msgid;
 562         char buf[256];
 563         char targ[256];
 564
 565         msgid = atol(bstr("msgid"));
 566
 567         output_headers(1);
 568
 569         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=770000><TR><TD>");
 570         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 571         wprintf("<B>Confirm move of message</B>\n");
 572         wprintf("</FONT></TD></TR></TABLE>\n");
 573
 574         wprintf("<CENTER>");
 575
 576         wprintf("Please select the room to which you would like this message moved:<BR>\n");
 577
 578         wprintf("<FORM METHOD=\"POST\" ACTION=\"/move_msg\">\n");
 579         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgid\" VALUE=\"%s\">\n",
 580                 bstr("msgid"));
 581
 582
 583         wprintf("<SELECT NAME=\"target_room\" SIZE=5>\n");
 584         serv_puts("LKRA");
 585         serv_gets(buf);
 586         if (buf[0] == '1') {
 587                 while (serv_gets(buf), strcmp(buf, "000")) {
 588                         extract(targ, buf, 0);
 589                         wprintf("<OPTION>");
 590                         escputs(targ);
 591                         wprintf("\n");
 592                 }
 593         }
 594         wprintf("</SELECT>\n");
 595         wprintf("<BR>\n");
 596
 597         wprintf("<INPUT TYPE=\"submit\" NAME=\"yesno\" VALUE=\"Move\">");
 598         wprintf("<INPUT TYPE=\"submit\" NAME=\"yesno\" VALUE=\"Cancel\">");
 599         wprintf("</FORM></CENTER>\n");
 600
 601         wprintf("</CENTER>\n");
 602         wDumpContent(1);
 603 }
 604
 605
 606
 607 void move_msg(void)
 608 {
 609         long msgid;
 610         char buf[256];
 611
 612         msgid = atol(bstr("msgid"));
 613
 614         output_headers(1);
 615
 616         if (!strcasecmp(bstr("yesno"), "Move")) {
 617                 sprintf(buf, "MOVE %ld|%s", msgid, bstr("target_room"));
 618                 serv_puts(buf);
 619                 serv_gets(buf);
 620                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 621         } else {
 622                 wprintf("<EM>Message not deleted.</EM><BR>\n");
 623         }
 624
 625         wDumpContent(1);
 626 }
 627
 628
 629