webcit/webcit.c

   1 /*
   2  * webcit.c
   3  *
   4  * This is the actual program called by the webserver.  It maintains a
   5  * persistent session to the Citadel server, handling HTTP WebCit requests as
   6  * they arrive and presenting a user interface.
   7  *
   8  * $Id$
   9  */
  10
  11 #include <ctype.h>
  12 #include <stdlib.h>
  13 #include <unistd.h>
  14 #include <stdio.h>
  15 #include <fcntl.h>
  16 #include <signal.h>
  17 #include <sys/types.h>
  18 #include <sys/wait.h>
  19 #include <sys/socket.h>
  20 #include <sys/time.h>
  21 #include <sys/stat.h>
  22 #include <limits.h>
  23 #include <netinet/in.h>
  24 #include <netdb.h>
  25 #include <string.h>
  26 #include <pwd.h>
  27 #include <errno.h>
  28 #include <stdarg.h>
  29 #include <pthread.h>
  30 #include <signal.h>
  31 #include "webcit.h"
  32
  33
  34 void unescape_input(char *buf)
  35 {
  36         int a, b;
  37         char hex[3];
  38
  39         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  40                 buf[strlen(buf) - 1] = 0;
  41
  42         for (a = 0; a < strlen(buf); ++a) {
  43                 if (buf[a] == '+')
  44                         buf[a] = ' ';
  45                 if (buf[a] == '%') {
  46                         hex[0] = buf[a + 1];
  47                         hex[1] = buf[a + 2];
  48                         hex[2] = 0;
  49                         sscanf(hex, "%02x", &b);
  50                         buf[a] = (char) b;
  51                         strcpy(&buf[a + 1], &buf[a + 3]);
  52                 }
  53         }
  54
  55 }
  56
  57
  58 void addurls(char *url)
  59 {
  60         char *up, *ptr;
  61         char buf[256];
  62         int a, b;
  63         struct urlcontent *u;
  64
  65         up = url;
  66         while (strlen(up) > 0) {
  67
  68                 /* locate the = sign */
  69                 strncpy(buf, up, 255);
  70                 b = (-1);
  71                 for (a = 255; a >= 0; --a)
  72                         if (buf[a] == '=')
  73                                 b = a;
  74                 if (b < 0)
  75                         return;
  76                 buf[b] = 0;
  77
  78                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  79                 u->next = WC->urlstrings;
  80                 WC->urlstrings = u;
  81                 strcpy(u->url_key, buf);
  82
  83                 /* now chop that part off */
  84                 for (a = 0; a <= b; ++a)
  85                         ++up;
  86
  87                 /* locate the & sign */
  88                 ptr = up;
  89                 b = strlen(up);
  90                 for (a = 0; a < strlen(up); ++a) {
  91                         if (!strncmp(ptr, "&", 1)) {
  92                                 b = a;
  93                                 break;
  94                         }
  95                         ++ptr;
  96                 }
  97                 ptr = up;
  98                 for (a = 0; a < b; ++a)
  99                         ++ptr;
 100                 strcpy(ptr, "");
 101
 102                 u->url_data = malloc(strlen(up) + 1);
 103                 strcpy(u->url_data, up);
 104                 u->url_data[b] = 0;
 105                 unescape_input(u->url_data);
 106                 up = ptr;
 107                 ++up;
 108         }
 109 }
 110
 111 void free_urls(void)
 112 {
 113         struct urlcontent *u;
 114
 115         while (WC->urlstrings != NULL) {
 116                 free(WC->urlstrings->url_data);
 117                 u = WC->urlstrings->next;
 118                 free(WC->urlstrings);
 119                 WC->urlstrings = u;
 120         }
 121 }
 122
 123 /*
 124  * Diagnostic function to display the contents of all variables
 125  */
 126 void dump_vars(void)
 127 {
 128         struct urlcontent *u;
 129
 130         for (u = WC->urlstrings; u != NULL; u = u->next) {
 131                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 132         }
 133 }
 134
 135 char *bstr(char *key)
 136 {
 137         struct urlcontent *u;
 138
 139         for (u = WC->urlstrings; u != NULL; u = u->next) {
 140                 if (!strcasecmp(u->url_key, key))
 141                         return (u->url_data);
 142         }
 143         return ("");
 144 }
 145
 146
 147 void wprintf(const char *format,...)
 148 {
 149         va_list arg_ptr;
 150         char wbuf[1024];
 151
 152         va_start(arg_ptr, format);
 153         vsprintf(wbuf, format, arg_ptr);
 154         va_end(arg_ptr);
 155
 156         write(WC->http_sock, wbuf, strlen(wbuf));
 157 }
 158
 159
 160 /*
 161  * wDumpContent() wraps up an HTTP session, closes tags, etc.
 162  *
 163  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 164  * append the main menu and closing tags, or 2 to
 165  * append the closing tags only.
 166  */
 167 void wDumpContent(int print_standard_html_footer)
 168 {
 169         if (WC->fake_frames) {
 170                 wprintf("<CENTER><FONT SIZE=-1>"
 171                         "<TABLE border=0 width=100%><TR>"
 172                         "<TD><A HREF=\"/ungoto\">"
 173                         "<IMG SRC=\"/static/back.gif\" BORDER=0>"
 174                         "Ungoto</A></TD>");
 175                 wprintf("<TD><A HREF=\"#TheTop\">"
 176                         "<IMG SRC=\"/static/up.gif\" BORDER=0>"
 177                         "Top of page</A></TD>");
 178                 wprintf("<TD><A HREF=\"/display_enter\">"
 179                         "<IMG SRC=\"/static/enter.gif\" BORDER=0>"
 180                         "Enter a message</A></TD>");
 181                 wprintf("<TD><A HREF=\"/gotonext\">"
 182                         "Goto next room"
 183                         "<IMG SRC=\"/static/forward.gif\" BORDER=0></A></TD>"
 184                         "</TR></TABLE>"
 185                         "</FONT>\n"
 186                         "</TD></TR></TABLE></TABLE>\n");
 187                 WC->fake_frames = 0;
 188         }
 189
 190         if (print_standard_html_footer) {
 191                 if (print_standard_html_footer != 2) {
 192                         wprintf("<BR>");
 193                 }
 194                 wprintf("</BODY></HTML>\n");
 195         }
 196
 197
 198 }
 199
 200
 201 void escputs1(char *strbuf, int nbsp)
 202 {
 203         int a;
 204
 205         for (a = 0; a < strlen(strbuf); ++a) {
 206                 if (strbuf[a] == '<')
 207                         wprintf("&lt;");
 208                 else if (strbuf[a] == '>')
 209                         wprintf("&gt;");
 210                 else if (strbuf[a] == '&')
 211                         wprintf("&amp;");
 212                 else if (strbuf[a] == '\"')
 213                         wprintf("&quot;");
 214                 else if (strbuf[a] == '\'')
 215                         wprintf("&#39;");
 216                 else if (strbuf[a] == LB)
 217                         wprintf("<");
 218                 else if (strbuf[a] == RB)
 219                         wprintf(">");
 220                 else if (strbuf[a] == QU)
 221                         wprintf("\"");
 222                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 223                         wprintf("&nbsp;");
 224                 } else {
 225                         wprintf("%c", strbuf[a]);
 226                 }
 227         }
 228 }
 229
 230 void escputs(char *strbuf)
 231 {
 232         escputs1(strbuf, 0);
 233 }
 234
 235
 236
 237 char *urlesc(char *strbuf)
 238 {
 239         int a, b, c;
 240         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 241         static char outbuf[512];
 242
 243         strcpy(outbuf, "");
 244
 245         for (a = 0; a < strlen(strbuf); ++a) {
 246                 c = 0;
 247                 for (b = 0; b < strlen(ec); ++b) {
 248                         if (strbuf[a] == ec[b])
 249                                 c = 1;
 250                 }
 251                 b = strlen(outbuf);
 252                 if (c == 1)
 253                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 254                 else
 255                         sprintf(&outbuf[b], "%c", strbuf[a]);
 256         }
 257         return (outbuf);
 258 }
 259
 260 void urlescputs(char *strbuf)
 261 {
 262         wprintf("%s", urlesc(strbuf));
 263 }
 264
 265
 266
 267
 268 /*
 269  * Output all that important stuff that the browser will want to see
 270  *
 271  * control codes:
 272  *
 273  * Bits 0 and 1:
 274  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 275  * 1 = HTTP headers plus the "fake frames" found in most windows.
 276  * 2 = HTTP headers required to terminate the session (unset cookies)
 277  * 3 = HTTP and HTML headers, but no 'fake frames'
 278  *
 279  * Bit 2: Set to 1 to auto-refresh page every 30 seconds
 280  */
 281 void output_headers(int controlcode)
 282 {
 283         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 284         char cookie[256];
 285         int print_standard_html_head = 0;
 286         int refresh30 = 0;
 287
 288         print_standard_html_head        =       controlcode & 0x03;
 289         refresh30                       =       ((controlcode & 0x04) >> 2);
 290
 291         wprintf("HTTP/1.0 200 OK\n");
 292
 293         if (print_standard_html_head > 0) {
 294                 wprintf("Content-type: text/html\n");
 295                 wprintf("Server: %s\n", SERVER);
 296                 wprintf("Connection: close\n");
 297                 wprintf("Pragma: no-cache\n");
 298                 wprintf("Cache-Control: no-store\n");
 299         }
 300         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 301                         WC->wc_password, WC->wc_roomname);
 302         if (print_standard_html_head == 2) {
 303                 wprintf("X-WebCit-Session: close\n");
 304                 wprintf("Set-cookie: webcit=%s\n", unset);
 305         } else {
 306                 wprintf("Set-cookie: webcit=%s\n", cookie);
 307         }
 308
 309         if (print_standard_html_head > 0) {
 310                 wprintf("\n");
 311                 wprintf("<HTML><HEAD><TITLE>");
 312                 escputs(serv_info.serv_humannode);
 313                 wprintf("</TITLE>\n"
 314                         "<META HTTP-EQUIV=\"Expires\" CONTENT=\"0\">\n"
 315                         "<META HTTP-EQUIV=\"Pragma\" CONTENT=\"no-cache\">\n");
 316                 if (refresh30) wprintf(
 317                         "<META HTTP-EQUIV=\"refresh\" CONTENT=\"30\">\n");
 318                 wprintf("</HEAD>\n");
 319                 if (WC->ExpressMessages != NULL) {
 320                         wprintf("<SCRIPT language=\"javascript\">\n");
 321                         wprintf("function ExpressMessage() {\n");
 322                         wprintf(" alert(\"");
 323                         escputs(WC->ExpressMessages);
 324                         wprintf("\")\n");
 325                         wprintf(" }\n </SCRIPT>\n");
 326                 }
 327
 328
 329
 330                 /* JavaScript key-based navigation would go here if it
 331                  * were finished
 332                  */
 333
 334                 wprintf("<BODY ");
 335                 if (WC->ExpressMessages != NULL) {
 336                         wprintf("onload=\"ExpressMessage()\" ");
 337                         free(WC->ExpressMessages);
 338                         WC->ExpressMessages = NULL;
 339                 }
 340                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 341
 342
 343         if (print_standard_html_head == 1) {
 344                 wprintf("<A NAME=\"TheTop\"></A>"
 345                         "<TABLE border=0 width=100%>"
 346                         "<TR VALIGN=TOP><TD VALIGN=LEFT CELLPADDING=0>");
 347
 348                 display_menubar(0);
 349
 350                 wprintf("</TD><TD VALIGN=TOP>"
 351                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 352                         "<TD>\n");
 353
 354                 embed_room_banner(NULL);
 355
 356                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 357
 358                 WC->fake_frames = 1;
 359                 }
 360         }
 361 }
 362
 363
 364
 365 void ExpressMessageCat(char *buf) {
 366         if (WC->ExpressMessages == NULL) {
 367                 WC->ExpressMessages = malloc(strlen(buf) + 4);
 368                 strcpy(WC->ExpressMessages, "");
 369         } else {
 370                 WC->ExpressMessages = realloc(WC->ExpressMessages,
 371                         (strlen(WC->ExpressMessages) + strlen(buf) + 4));
 372         }
 373         strcat(WC->ExpressMessages, buf);
 374         strcat(WC->ExpressMessages, "\\n");
 375 }
 376
 377
 378 void check_for_express_messages()
 379 {
 380         char buf[256];
 381
 382         serv_puts("PEXP");
 383         serv_gets(buf);
 384         if (buf[0] == '1') {
 385                 while (serv_gets(buf), strcmp(buf, "000")) {
 386                         ExpressMessageCat(buf);
 387                 }
 388         }
 389 }
 390
 391
 392
 393
 394 void output_static(char *what)
 395 {
 396         char buf[4096];
 397         long thisblock;
 398         FILE *fp;
 399         struct stat statbuf;
 400         off_t bytes;
 401
 402         sprintf(buf, "static/%s", what);
 403         fp = fopen(buf, "rb");
 404         if (fp == NULL) {
 405                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 406                 wprintf("Content-Type: text/plain\n");
 407                 wprintf("\n");
 408                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 409         } else {
 410                 output_headers(0);
 411
 412                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 413                         wprintf("Content-type: image/gif\n");
 414                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 415                         wprintf("Content-type: text/plain\n");
 416                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 417                         wprintf("Content-type: image/jpeg\n");
 418                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 419                         wprintf("Content-type: text/html\n");
 420                 else
 421                         wprintf("Content-type: application/octet-stream\n");
 422
 423                 fstat(fileno(fp), &statbuf);
 424                 bytes = statbuf.st_size;
 425                 fprintf(stderr, "Static: %s, %ld bytes\n", what, bytes);
 426                 wprintf("Content-length: %ld\n", (long) bytes);
 427                 wprintf("\n");
 428                 while (bytes > 0) {
 429                         thisblock = sizeof(buf);
 430                         if (thisblock > bytes) thisblock = bytes;
 431                         fread(buf, thisblock, 1, fp);
 432                         write(WC->http_sock, buf, thisblock);
 433                         bytes = bytes - thisblock;
 434                 }
 435                 fclose(fp);
 436         }
 437 }
 438
 439 /*
 440  * When the browser requests an image file from the Citadel server,
 441  * this function is called to transmit it.
 442  */
 443 void output_image()
 444 {
 445         char buf[256];
 446         char xferbuf[4096];
 447         off_t bytes;
 448         off_t thisblock;
 449         off_t accomplished = 0L;
 450
 451
 452         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 453         serv_gets(buf);
 454         if (buf[0] == '2') {
 455                 bytes = extract_long(&buf[4], 0);
 456                 output_headers(0);
 457                 wprintf("Content-type: image/gif\n");
 458                 wprintf("Content-length: %ld\n", (long) bytes);
 459                 wprintf("\n");
 460
 461                 while (bytes > (off_t) 0) {
 462                         thisblock = (off_t) sizeof(xferbuf);
 463                         if (thisblock > bytes)
 464                                 thisblock = bytes;
 465                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 466                         serv_gets(buf);
 467                         if (buf[0] == '6')
 468                                 thisblock = extract_long(&buf[4], 0);
 469                         serv_read(xferbuf, (int) thisblock);
 470                         write(WC->http_sock, xferbuf, thisblock);
 471                         bytes = bytes - thisblock;
 472                         accomplished = accomplished + thisblock;
 473                 }
 474                 serv_puts("CLOS");
 475                 serv_gets(buf);
 476         } else {
 477                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 478                 output_headers(0);
 479                 wprintf("Content-Type: text/plain\n");
 480                 wprintf("\n");
 481                 wprintf("Error retrieving image\n");
 482         }
 483
 484 }
 485
 486
 487 /*
 488  * Convenience functions to display a page containing only a string
 489  */
 490 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 491 {
 492         wprintf("HTTP/1.0 200 OK\n");
 493         output_headers(1);
 494         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 495         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 496         wprintf("<B>%s</B>\n", titlebarmsg);
 497         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 498         escputs(messagetext);
 499
 500         wprintf("<HR>\n");
 501         embed_main_menu();
 502         wDumpContent(1);
 503 }
 504
 505 void display_error(char *errormessage)
 506 {
 507         convenience_page("770000", "Error", errormessage);
 508 }
 509
 510 void display_success(char *successmessage)
 511 {
 512         convenience_page("007700", "OK", successmessage);
 513 }
 514
 515
 516
 517 void extract_action(char *actbuf, char *cmdbuf)
 518 {
 519         int i;
 520
 521         strcpy(actbuf, cmdbuf);
 522         if (!strncasecmp(actbuf, "GET /", 5))
 523                 strcpy(actbuf, &actbuf[5]);
 524         if (!strncasecmp(actbuf, "PUT /", 5))
 525                 strcpy(actbuf, &actbuf[5]);
 526         if (!strncasecmp(actbuf, "POST /", 6))
 527                 strcpy(actbuf, &actbuf[6]);
 528
 529         for (i = 0; i < strlen(actbuf); ++i) {
 530                 if (actbuf[i] == ' ') {
 531                         actbuf[i] = 0;
 532                         i = 0;
 533                 }
 534                 if (actbuf[i] == '/') {
 535                         actbuf[i] = 0;
 536                         i = 0;
 537                 }
 538                 if (actbuf[i] == '?') {
 539                         actbuf[i] = 0;
 540                         i = 0;
 541                 }
 542                 if (actbuf[i] == '&') {
 543                         actbuf[i] = 0;
 544                         i = 0;
 545                 }
 546         }
 547 }
 548
 549
 550 void upload_handler(char *name, char *filename, char *encoding,
 551                     void *content, char *cbtype, size_t length)
 552 {
 553
 554         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 555         fprintf(stderr, "    name = %s\n", name);
 556         fprintf(stderr, "filename = %s\n", filename);
 557         fprintf(stderr, "encoding = %s\n", encoding);
 558         fprintf(stderr, "    type = %s\n", cbtype);
 559         fprintf(stderr, "  length = %d\n", length);
 560
 561         if (strlen(name) > 0) {
 562                 WC->upload = malloc(length);
 563                 if (WC->upload != NULL) {
 564                         WC->upload_length = length;
 565                         memcpy(WC->upload, content, length);
 566                 }
 567         }
 568 }
 569
 570
 571 /*
 572  * Entry point for WebCit transaction
 573  */
 574 void session_loop(struct httprequest *req)
 575 {
 576         char cmd[256];
 577         char action[256];
 578         char buf[256];
 579         int a, b;
 580         int ContentLength = 0;
 581         int BytesRead;
 582         char ContentType[512];
 583         char *content;
 584         struct httprequest *hptr;
 585         char browser_host[256];
 586         char user_agent[256];
 587
 588         /* We stuff these with the values coming from the client cookies,
 589          * so we can use them to reconnect a timed out session if we have to.
 590          */
 591         char c_host[256];
 592         char c_port[256];
 593         char c_username[256];
 594         char c_password[256];
 595         char c_roomname[256];
 596         char cookie[256];
 597
 598         strcpy(c_host, defaulthost);
 599         strcpy(c_port, defaultport);
 600         strcpy(c_username, "");
 601         strcpy(c_password, "");
 602         strcpy(c_roomname, "");
 603
 604         WC->upload_length = 0;
 605         WC->upload = NULL;
 606
 607         hptr = req;
 608         if (hptr == NULL) return;
 609
 610         strcpy(cmd, hptr->line);
 611         hptr = hptr->next;
 612         extract_action(action, cmd);
 613
 614         while (hptr != NULL) {
 615                 strcpy(buf, hptr->line);
 616                 hptr = hptr->next;
 617
 618                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 619                         strcpy(cookie, &buf[15]);
 620                         cookie_to_stuff(cookie, NULL,
 621                                       c_username, c_password, c_roomname);
 622                 }
 623                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
 624                         ContentLength = atoi(&buf[16]);
 625                 }
 626                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
 627                         strcpy(ContentType, &buf[14]);
 628                 }
 629                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
 630                         strcpy(user_agent, &buf[12]);
 631                 }
 632         }
 633
 634         if (ContentLength > 0) {
 635                 fprintf(stderr, "Content length: %d\n", ContentLength);
 636                 content = malloc(ContentLength + 1);
 637                 memset(content, 0, ContentLength+1);
 638                 BytesRead = 0;
 639
 640                 while (BytesRead < ContentLength) {
 641                         a=read(WC->http_sock, &content[BytesRead],
 642                                 ContentLength - BytesRead);
 643                         if (a <= 0) BytesRead = ContentLength;
 644                         else BytesRead += a;
 645                 }
 646
 647                 if (!strncasecmp(ContentType,
 648                               "application/x-www-form-urlencoded", 33)) {
 649                         addurls(content);
 650                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 651                         mime_parser(content, ContentLength, ContentType,
 652                                     *upload_handler);
 653                 }
 654         } else {
 655                 content = NULL;
 656         }
 657
 658         /* If there are variables in the URL, we must grab them now */
 659         for (a = 0; a < strlen(cmd); ++a)
 660                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 661                         for (b = a; b < strlen(cmd); ++b)
 662                                 if (isspace(cmd[b]))
 663                                         cmd[b] = 0;
 664                         addurls(&cmd[a + 1]);
 665                         cmd[a] = 0;
 666                 }
 667         /*
 668          * If we're not connected to a Citadel server, try to hook up the
 669          * connection now.  Preference is given to the host and port specified
 670          * by browser cookies, if cookies have been supplied.
 671          */
 672         if (!WC->connected) {
 673                 if (strlen(bstr("host")) > 0)
 674                         strcpy(c_host, bstr("host"));
 675                 if (strlen(bstr("port")) > 0)
 676                         strcpy(c_port, bstr("port"));
 677
 678                 if (!strcasecmp(c_host, "uds")) {
 679                         /* unix domain socket */
 680                         sprintf(buf, "%s/citadel.socket", c_port);
 681                         WC->serv_sock = uds_connectsock(buf);
 682                 }
 683                 else {
 684                         /* tcp socket */
 685                         WC->serv_sock = tcp_connectsock(c_host, c_port);
 686                 }
 687
 688                 if (WC->serv_sock < 0) {
 689                         do_logout();
 690                 }
 691
 692                 WC->connected = 1;
 693                 serv_gets(buf); /* get the server welcome message */
 694                 locate_host(browser_host, WC->http_sock);
 695                 get_serv_info(browser_host, user_agent);
 696         }
 697         check_for_express_messages();
 698
 699         /*
 700          * If we're not logged in, but we have username and password cookies
 701          * supplied by the browser, try using them to log in.
 702          */
 703         if ((!WC->logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 704                 serv_printf("USER %s", c_username);
 705                 serv_gets(buf);
 706                 if (buf[0] == '3') {
 707                         serv_printf("PASS %s", c_password);
 708                         serv_gets(buf);
 709                         if (buf[0] == '2') {
 710                                 become_logged_in(c_username, c_password, buf);
 711                         }
 712                 }
 713         }
 714         /*
 715          * If we don't have a current room, but a cookie specifying the
 716          * current room is supplied, make an effort to go there.
 717          */
 718         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 719                 serv_printf("GOTO %s", c_roomname);
 720                 serv_gets(buf);
 721                 if (buf[0] == '2') {
 722                         strcpy(WC->wc_roomname, c_roomname);
 723                 }
 724         }
 725         if (!strcasecmp(action, "static")) {
 726                 strcpy(buf, &cmd[12]);
 727                 for (a = 0; a < strlen(buf); ++a)
 728                         if (isspace(buf[a]))
 729                                 buf[a] = 0;
 730                 output_static(buf);
 731         } else if (!strcasecmp(action, "image")) {
 732                 output_image();
 733         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
 734                 do_login();
 735         } else if (!WC->logged_in) {
 736                 display_login(NULL);
 737         }
 738         /* Various commands... */
 739
 740         else if (!strcasecmp(action, "do_welcome")) {
 741                 do_welcome();
 742         } else if (!strcasecmp(action, "display_main_menu")) {
 743                 display_main_menu();
 744         } else if (!strcasecmp(action, "advanced")) {
 745                 display_advanced_menu();
 746         } else if (!strcasecmp(action, "whobbs")) {
 747                 whobbs();
 748         } else if (!strcasecmp(action, "knrooms")) {
 749                 list_all_rooms_by_floor();
 750         } else if (!strcasecmp(action, "gotonext")) {
 751                 slrp_highest();
 752                 gotonext();
 753         } else if (!strcasecmp(action, "skip")) {
 754                 gotonext();
 755         } else if (!strcasecmp(action, "ungoto")) {
 756                 ungoto();
 757         } else if (!strcasecmp(action, "dotgoto")) {
 758                 slrp_highest();
 759                 smart_goto(bstr("room"));
 760         } else if (!strcasecmp(action, "termquit")) {
 761                 do_logout();
 762         } else if (!strcasecmp(action, "readnew")) {
 763                 readloop("readnew");
 764         } else if (!strcasecmp(action, "readold")) {
 765                 readloop("readold");
 766         } else if (!strcasecmp(action, "readfwd")) {
 767                 readloop("readfwd");
 768         } else if (!strcasecmp(action, "display_enter")) {
 769                 display_enter();
 770         } else if (!strcasecmp(action, "post")) {
 771                 post_message();
 772         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 773                 confirm_delete_msg();
 774         } else if (!strcasecmp(action, "delete_msg")) {
 775                 delete_msg();
 776         } else if (!strcasecmp(action, "confirm_move_msg")) {
 777                 confirm_move_msg();
 778         } else if (!strcasecmp(action, "move_msg")) {
 779                 move_msg();
 780         } else if (!strcasecmp(action, "userlist")) {
 781                 userlist();
 782         } else if (!strcasecmp(action, "showuser")) {
 783                 showuser();
 784         } else if (!strcasecmp(action, "display_page")) {
 785                 display_page();
 786         } else if (!strcasecmp(action, "page_user")) {
 787                 page_user();
 788         } else if (!strcasecmp(action, "chat")) {
 789                 do_chat();
 790         } else if (!strcasecmp(action, "display_private")) {
 791                 display_private("", 0);
 792         } else if (!strcasecmp(action, "goto_private")) {
 793                 goto_private();
 794         } else if (!strcasecmp(action, "zapped_list")) {
 795                 zapped_list();
 796         } else if (!strcasecmp(action, "display_zap")) {
 797                 display_zap();
 798         } else if (!strcasecmp(action, "zap")) {
 799                 zap();
 800         } else if (!strcasecmp(action, "display_entroom")) {
 801                 display_entroom();
 802         } else if (!strcasecmp(action, "entroom")) {
 803                 entroom();
 804         } else if (!strcasecmp(action, "display_editroom")) {
 805                 display_editroom();
 806         } else if (!strcasecmp(action, "editroom")) {
 807                 editroom();
 808         } else if (!strcasecmp(action, "display_editinfo")) {
 809                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 810         } else if (!strcasecmp(action, "editinfo")) {
 811                 save_edit("Room info", "EINF 1", 1);
 812         } else if (!strcasecmp(action, "display_editbio")) {
 813                 sprintf(buf, "RBIO %s", WC->wc_username);
 814                 display_edit("Your bio", "NOOP", buf, "editbio");
 815         } else if (!strcasecmp(action, "editbio")) {
 816                 save_edit("Your bio", "EBIO", 0);
 817         } else if (!strcasecmp(action, "confirm_delete_room")) {
 818                 confirm_delete_room();
 819         } else if (!strcasecmp(action, "delete_room")) {
 820                 delete_room();
 821         } else if (!strcasecmp(action, "validate")) {
 822                 validate();
 823         } else if (!strcasecmp(action, "display_editpic")) {
 824                 display_graphics_upload("your photo",
 825                                         "UIMG 0|_userpic_",
 826                                         "/editpic");
 827         } else if (!strcasecmp(action, "editpic")) {
 828                 do_graphics_upload("UIMG 1|_userpic_");
 829         } else if (!strcasecmp(action, "display_editroompic")) {
 830                 display_graphics_upload("the graphic for this room",
 831                                         "UIMG 0|_roompic_",
 832                                         "/editroompic");
 833         } else if (!strcasecmp(action, "editroompic")) {
 834                 do_graphics_upload("UIMG 1|_roompic_");
 835         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 836                 select_floor_to_edit_pic();
 837         } else if (!strcasecmp(action, "display_editfloorpic")) {
 838                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 839                         bstr("which_floor"));
 840                 display_graphics_upload("the graphic for this floor",
 841                                         buf,
 842                                         "/editfloorpic");
 843         } else if (!strcasecmp(action, "editfloorpic")) {
 844                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 845                         bstr("which_floor"));
 846                 do_graphics_upload(buf);
 847         } else if (!strcasecmp(action, "display_reg")) {
 848                 display_reg(0);
 849         } else if (!strcasecmp(action, "register")) {
 850                 register_user();
 851         } else if (!strcasecmp(action, "display_changepw")) {
 852                 display_changepw();
 853         } else if (!strcasecmp(action, "changepw")) {
 854                 changepw();
 855         } else if (!strcasecmp(action, "display_edit_node")) {
 856                 display_edit_node();
 857         } else if (!strcasecmp(action, "display_netconf")) {
 858                 display_netconf();
 859         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 860                 display_confirm_unshare();
 861         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 862                 display_confirm_delete_node();
 863         } else if (!strcasecmp(action, "delete_node")) {
 864                 delete_node();
 865         } else if (!strcasecmp(action, "unshare")) {
 866                 unshare();
 867         } else if (!strcasecmp(action, "display_add_node")) {
 868                 display_add_node();
 869         } else if (!strcasecmp(action, "add_node")) {
 870                 add_node();
 871         } else if (!strcasecmp(action, "display_share")) {
 872                 display_share();
 873         } else if (!strcasecmp(action, "share")) {
 874                 share();
 875         } else if (!strcasecmp(action, "terminate_session")) {
 876                 slrp_highest();
 877                 terminate_session();
 878         } else if (!strcasecmp(action, "edit_me")) {
 879                 edit_me();
 880         } else if (!strcasecmp(action, "display_siteconfig")) {
 881                 display_siteconfig();
 882         } else if (!strcasecmp(action, "siteconfig")) {
 883                 siteconfig();
 884         } else if (!strcasecmp(action, "display_generic")) {
 885                 display_generic();
 886         } else if (!strcasecmp(action, "do_generic")) {
 887                 do_generic();
 888         } else if (!strcasecmp(action, "display_menubar")) {
 889                 display_menubar(1);
 890         } else if (!strcasecmp(action, "diagnostics")) {
 891                 output_headers(1);
 892
 893                 wprintf("You're in session %d<HR>\n", WC->wc_session);
 894                 wprintf("Command: <BR><PRE>\n");
 895                 escputs(cmd);
 896                 wprintf("</PRE><HR>\n");
 897                 wprintf("Variables: <BR><PRE>\n");
 898                 dump_vars();
 899                 wprintf("</PRE><HR>\n");
 900                 wDumpContent(1);
 901         }
 902         /* When all else fais, display the main menu. */
 903         else {
 904                 display_main_menu();
 905         }
 906
 907         fflush(stdout);
 908         if (content != NULL) {
 909                 free(content);
 910                 content = NULL;
 911         }
 912         free_urls();
 913         if (WC->upload_length > 0) {
 914                 free(WC->upload);
 915                 WC->upload_length = 0;
 916         }
 917 }