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  * print_standard_html_head values:
 272  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 273  * 1 = HTTP headers plus the "fake frames" found in most windows.
 274  * 2 = HTTP headers required to terminate the session (unset cookies)
 275  * 3 = HTTP headers only.
 276  */
 277 void output_headers(int print_standard_html_head)
 278 {
 279
 280         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 281         char cookie[256];
 282
 283         wprintf("HTTP/1.0 200 OK\n");
 284
 285         if (print_standard_html_head > 0) {
 286                 wprintf("Content-type: text/html\n");
 287                 wprintf("Server: %s\n", SERVER);
 288                 wprintf("Connection: close\n");
 289                 wprintf("Pragma: no-cache\n");
 290                 wprintf("Cache-Control: no-store\n");
 291         }
 292         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 293                         WC->wc_password, WC->wc_roomname);
 294         if (print_standard_html_head == 2) {
 295                 wprintf("X-WebCit-Session: close\n");
 296                 wprintf("Set-cookie: webcit=%s\n", unset);
 297         } else {
 298                 wprintf("Set-cookie: webcit=%s\n", cookie);
 299         }
 300
 301         if (print_standard_html_head > 0) {
 302                 wprintf("\n");
 303                 wprintf("<HTML><HEAD><TITLE>");
 304                 escputs(serv_info.serv_humannode);
 305                 wprintf("</TITLE>\n"
 306                         "<META HTTP-EQUIV=\"Pragma\" CONTENT=\"no-cache\">\n"
 307                         "</HEAD>\n");
 308                 if (WC->ExpressMessages != NULL) {
 309                         wprintf("<SCRIPT language=\"javascript\">\n");
 310                         wprintf("function ExpressMessage() {\n");
 311                         wprintf(" alert(\"");
 312                         escputs(WC->ExpressMessages);
 313                         wprintf("\")\n");
 314                         wprintf(" }\n </SCRIPT>\n");
 315                 }
 316
 317
 318
 319                 /* JavaScript key-based navigation would go here if it
 320                  * were finished
 321                  */
 322
 323                 wprintf("<BODY ");
 324                 if (WC->ExpressMessages != NULL) {
 325                         wprintf("onload=\"ExpressMessage()\" ");
 326                         free(WC->ExpressMessages);
 327                         WC->ExpressMessages = NULL;
 328                 }
 329                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 330
 331
 332         if (print_standard_html_head == 1) {
 333                 wprintf("<A NAME=\"TheTop\"></A>"
 334                         "<TABLE border=0 width=100%>"
 335                         "<TR VALIGN=TOP><TD>");
 336
 337                 display_menubar(0);
 338
 339                 wprintf("</TD><TD VALIGN=TOP>"
 340                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 341                         "<TD>\n");
 342
 343                 embed_room_banner(NULL);
 344
 345                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 346
 347                 WC->fake_frames = 1;
 348                 }
 349         }
 350 }
 351
 352
 353
 354 void ExpressMessageCat(char *buf) {
 355         if (WC->ExpressMessages == NULL) {
 356                 WC->ExpressMessages = malloc(strlen(buf) + 4);
 357                 strcpy(WC->ExpressMessages, "");
 358         } else {
 359                 WC->ExpressMessages = realloc(WC->ExpressMessages,
 360                         (strlen(WC->ExpressMessages) + strlen(buf) + 4));
 361         }
 362         strcat(WC->ExpressMessages, buf);
 363         strcat(WC->ExpressMessages, "\\n");
 364 }
 365
 366
 367 void check_for_express_messages()
 368 {
 369         char buf[256];
 370
 371         serv_puts("PEXP");
 372         serv_gets(buf);
 373         if (buf[0] == '1') {
 374                 while (serv_gets(buf), strcmp(buf, "000")) {
 375                         ExpressMessageCat(buf);
 376                 }
 377         }
 378 }
 379
 380
 381
 382
 383 void output_static(char *what)
 384 {
 385         char buf[4096];
 386         long thisblock;
 387         FILE *fp;
 388         struct stat statbuf;
 389         off_t bytes;
 390
 391         sprintf(buf, "static/%s", what);
 392         fp = fopen(buf, "rb");
 393         if (fp == NULL) {
 394                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 395                 wprintf("Content-Type: text/plain\n");
 396                 wprintf("\n");
 397                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 398         } else {
 399                 output_headers(0);
 400
 401                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 402                         wprintf("Content-type: image/gif\n");
 403                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 404                         wprintf("Content-type: text/plain\n");
 405                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 406                         wprintf("Content-type: image/jpeg\n");
 407                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 408                         wprintf("Content-type: text/html\n");
 409                 else
 410                         wprintf("Content-type: application/octet-stream\n");
 411
 412                 fstat(fileno(fp), &statbuf);
 413                 bytes = statbuf.st_size;
 414                 fprintf(stderr, "Static: %s, %ld bytes\n", what, bytes);
 415                 wprintf("Content-length: %ld\n", (long) bytes);
 416                 wprintf("\n");
 417                 while (bytes > 0) {
 418                         thisblock = sizeof(buf);
 419                         if (thisblock > bytes) thisblock = bytes;
 420                         fread(buf, thisblock, 1, fp);
 421                         write(WC->http_sock, buf, thisblock);
 422                         bytes = bytes - thisblock;
 423                 }
 424                 fclose(fp);
 425         }
 426 }
 427
 428 /*
 429  * When the browser requests an image file from the Citadel server,
 430  * this function is called to transmit it.
 431  */
 432 void output_image()
 433 {
 434         char buf[256];
 435         char xferbuf[4096];
 436         off_t bytes;
 437         off_t thisblock;
 438         off_t accomplished = 0L;
 439
 440
 441         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 442         serv_gets(buf);
 443         if (buf[0] == '2') {
 444                 bytes = extract_long(&buf[4], 0);
 445                 output_headers(0);
 446                 wprintf("Content-type: image/gif\n");
 447                 wprintf("Content-length: %ld\n", (long) bytes);
 448                 wprintf("\n");
 449
 450                 while (bytes > (off_t) 0) {
 451                         thisblock = (off_t) sizeof(xferbuf);
 452                         if (thisblock > bytes)
 453                                 thisblock = bytes;
 454                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 455                         serv_gets(buf);
 456                         if (buf[0] == '6')
 457                                 thisblock = extract_long(&buf[4], 0);
 458                         serv_read(xferbuf, (int) thisblock);
 459                         write(WC->http_sock, xferbuf, thisblock);
 460                         bytes = bytes - thisblock;
 461                         accomplished = accomplished + thisblock;
 462                 }
 463                 serv_puts("CLOS");
 464                 serv_gets(buf);
 465         } else {
 466                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 467                 output_headers(0);
 468                 wprintf("Content-Type: text/plain\n");
 469                 wprintf("\n");
 470                 wprintf("Error retrieving image\n");
 471         }
 472
 473 }
 474
 475
 476 /*
 477  * Convenience functions to display a page containing only a string
 478  */
 479 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 480 {
 481         wprintf("HTTP/1.0 200 OK\n");
 482         output_headers(1);
 483         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 484         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 485         wprintf("<B>%s</B>\n", titlebarmsg);
 486         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 487         escputs(messagetext);
 488
 489         wprintf("<HR>\n");
 490         embed_main_menu();
 491         wDumpContent(1);
 492 }
 493
 494 void display_error(char *errormessage)
 495 {
 496         convenience_page("770000", "Error", errormessage);
 497 }
 498
 499 void display_success(char *successmessage)
 500 {
 501         convenience_page("007700", "OK", successmessage);
 502 }
 503
 504
 505
 506 void extract_action(char *actbuf, char *cmdbuf)
 507 {
 508         int i;
 509
 510         strcpy(actbuf, cmdbuf);
 511         if (!strncasecmp(actbuf, "GET /", 5))
 512                 strcpy(actbuf, &actbuf[5]);
 513         if (!strncasecmp(actbuf, "PUT /", 5))
 514                 strcpy(actbuf, &actbuf[5]);
 515         if (!strncasecmp(actbuf, "POST /", 6))
 516                 strcpy(actbuf, &actbuf[6]);
 517
 518         for (i = 0; i < strlen(actbuf); ++i) {
 519                 if (actbuf[i] == ' ') {
 520                         actbuf[i] = 0;
 521                         i = 0;
 522                 }
 523                 if (actbuf[i] == '/') {
 524                         actbuf[i] = 0;
 525                         i = 0;
 526                 }
 527                 if (actbuf[i] == '?') {
 528                         actbuf[i] = 0;
 529                         i = 0;
 530                 }
 531                 if (actbuf[i] == '&') {
 532                         actbuf[i] = 0;
 533                         i = 0;
 534                 }
 535         }
 536 }
 537
 538
 539 void upload_handler(char *name, char *filename, char *encoding,
 540                     void *content, char *cbtype, size_t length)
 541 {
 542
 543         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 544         fprintf(stderr, "    name = %s\n", name);
 545         fprintf(stderr, "filename = %s\n", filename);
 546         fprintf(stderr, "encoding = %s\n", encoding);
 547         fprintf(stderr, "    type = %s\n", cbtype);
 548         fprintf(stderr, "  length = %d\n", length);
 549
 550         if (strlen(name) > 0) {
 551                 WC->upload = malloc(length);
 552                 if (WC->upload != NULL) {
 553                         WC->upload_length = length;
 554                         memcpy(WC->upload, content, length);
 555                 }
 556         }
 557 }
 558
 559
 560 /*
 561  * Entry point for WebCit transaction
 562  */
 563 void session_loop(struct httprequest *req)
 564 {
 565         char cmd[256];
 566         char action[256];
 567         char buf[256];
 568         int a, b;
 569         int ContentLength = 0;
 570         int BytesRead;
 571         char ContentType[512];
 572         char *content;
 573         struct httprequest *hptr;
 574         char browser_host[256];
 575         char user_agent[256];
 576
 577         /* We stuff these with the values coming from the client cookies,
 578          * so we can use them to reconnect a timed out session if we have to.
 579          */
 580         char c_host[256];
 581         char c_port[256];
 582         char c_username[256];
 583         char c_password[256];
 584         char c_roomname[256];
 585         char cookie[256];
 586
 587         strcpy(c_host, defaulthost);
 588         strcpy(c_port, defaultport);
 589         strcpy(c_username, "");
 590         strcpy(c_password, "");
 591         strcpy(c_roomname, "");
 592
 593         WC->upload_length = 0;
 594         WC->upload = NULL;
 595
 596         hptr = req;
 597         if (hptr == NULL) return;
 598
 599         strcpy(cmd, hptr->line);
 600         hptr = hptr->next;
 601         extract_action(action, cmd);
 602
 603         while (hptr != NULL) {
 604                 strcpy(buf, hptr->line);
 605                 hptr = hptr->next;
 606
 607                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 608                         strcpy(cookie, &buf[15]);
 609                         cookie_to_stuff(cookie, NULL,
 610                                       c_username, c_password, c_roomname);
 611                 }
 612                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
 613                         ContentLength = atoi(&buf[16]);
 614                 }
 615                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
 616                         strcpy(ContentType, &buf[14]);
 617                 }
 618                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
 619                         strcpy(user_agent, &buf[12]);
 620                 }
 621         }
 622
 623         if (ContentLength > 0) {
 624                 fprintf(stderr, "Content length: %d\n", ContentLength);
 625                 content = malloc(ContentLength + 1);
 626                 memset(content, 0, ContentLength+1);
 627                 BytesRead = 0;
 628
 629                 while (BytesRead < ContentLength) {
 630                         a=read(WC->http_sock, &content[BytesRead],
 631                                 ContentLength - BytesRead);
 632                         if (a <= 0) BytesRead = ContentLength;
 633                         else BytesRead += a;
 634                 }
 635
 636                 if (!strncasecmp(ContentType,
 637                               "application/x-www-form-urlencoded", 33)) {
 638                         addurls(content);
 639                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 640                         mime_parser(content, ContentLength, ContentType,
 641                                     *upload_handler);
 642                 }
 643         } else {
 644                 content = NULL;
 645         }
 646
 647         /* If there are variables in the URL, we must grab them now */
 648         for (a = 0; a < strlen(cmd); ++a)
 649                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 650                         for (b = a; b < strlen(cmd); ++b)
 651                                 if (isspace(cmd[b]))
 652                                         cmd[b] = 0;
 653                         addurls(&cmd[a + 1]);
 654                         cmd[a] = 0;
 655                 }
 656         /*
 657          * If we're not connected to a Citadel server, try to hook up the
 658          * connection now.  Preference is given to the host and port specified
 659          * by browser cookies, if cookies have been supplied.
 660          */
 661         if (!WC->connected) {
 662                 if (strlen(bstr("host")) > 0)
 663                         strcpy(c_host, bstr("host"));
 664                 if (strlen(bstr("port")) > 0)
 665                         strcpy(c_port, bstr("port"));
 666
 667                 if (!strcasecmp(c_host, "uds")) {
 668                         /* unix domain socket */
 669                         sprintf(buf, "%s/citadel.socket", c_port);
 670                         WC->serv_sock = uds_connectsock(buf);
 671                 }
 672                 else {
 673                         /* tcp socket */
 674                         WC->serv_sock = tcp_connectsock(c_host, c_port);
 675                 }
 676
 677                 if (WC->serv_sock < 0) {
 678                         do_logout();
 679                 }
 680
 681                 WC->connected = 1;
 682                 serv_gets(buf); /* get the server welcome message */
 683                 locate_host(browser_host, WC->http_sock);
 684                 get_serv_info(browser_host, user_agent);
 685         }
 686         check_for_express_messages();
 687
 688         /*
 689          * If we're not logged in, but we have username and password cookies
 690          * supplied by the browser, try using them to log in.
 691          */
 692         if ((!WC->logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 693                 serv_printf("USER %s", c_username);
 694                 serv_gets(buf);
 695                 if (buf[0] == '3') {
 696                         serv_printf("PASS %s", c_password);
 697                         serv_gets(buf);
 698                         if (buf[0] == '2') {
 699                                 become_logged_in(c_username, c_password, buf);
 700                         }
 701                 }
 702         }
 703         /*
 704          * If we don't have a current room, but a cookie specifying the
 705          * current room is supplied, make an effort to go there.
 706          */
 707         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 708                 serv_printf("GOTO %s", c_roomname);
 709                 serv_gets(buf);
 710                 if (buf[0] == '2') {
 711                         strcpy(WC->wc_roomname, c_roomname);
 712                 }
 713         }
 714         if (!strcasecmp(action, "static")) {
 715                 strcpy(buf, &cmd[12]);
 716                 for (a = 0; a < strlen(buf); ++a)
 717                         if (isspace(buf[a]))
 718                                 buf[a] = 0;
 719                 output_static(buf);
 720         } else if (!strcasecmp(action, "image")) {
 721                 output_image();
 722         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
 723                 do_login();
 724         } else if (!WC->logged_in) {
 725                 display_login(NULL);
 726         }
 727         /* Various commands... */
 728
 729         else if (!strcasecmp(action, "do_welcome")) {
 730                 do_welcome();
 731         } else if (!strcasecmp(action, "display_main_menu")) {
 732                 display_main_menu();
 733         } else if (!strcasecmp(action, "advanced")) {
 734                 display_advanced_menu();
 735         } else if (!strcasecmp(action, "whobbs")) {
 736                 whobbs();
 737         } else if (!strcasecmp(action, "knrooms")) {
 738                 list_all_rooms_by_floor();
 739         } else if (!strcasecmp(action, "gotonext")) {
 740                 slrp_highest();
 741                 gotonext();
 742         } else if (!strcasecmp(action, "skip")) {
 743                 gotonext();
 744         } else if (!strcasecmp(action, "ungoto")) {
 745                 ungoto();
 746         } else if (!strcasecmp(action, "dotgoto")) {
 747                 slrp_highest();
 748                 smart_goto(bstr("room"));
 749         } else if (!strcasecmp(action, "termquit")) {
 750                 do_logout();
 751         } else if (!strcasecmp(action, "readnew")) {
 752                 readloop("readnew");
 753         } else if (!strcasecmp(action, "readold")) {
 754                 readloop("readold");
 755         } else if (!strcasecmp(action, "readfwd")) {
 756                 readloop("readfwd");
 757         } else if (!strcasecmp(action, "display_enter")) {
 758                 display_enter();
 759         } else if (!strcasecmp(action, "post")) {
 760                 post_message();
 761         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 762                 confirm_delete_msg();
 763         } else if (!strcasecmp(action, "delete_msg")) {
 764                 delete_msg();
 765         } else if (!strcasecmp(action, "confirm_move_msg")) {
 766                 confirm_move_msg();
 767         } else if (!strcasecmp(action, "move_msg")) {
 768                 move_msg();
 769         } else if (!strcasecmp(action, "userlist")) {
 770                 userlist();
 771         } else if (!strcasecmp(action, "showuser")) {
 772                 showuser();
 773         } else if (!strcasecmp(action, "display_page")) {
 774                 display_page();
 775         } else if (!strcasecmp(action, "page_user")) {
 776                 page_user();
 777         } else if (!strcasecmp(action, "chat")) {
 778                 do_chat();
 779         } else if (!strcasecmp(action, "display_private")) {
 780                 display_private("", 0);
 781         } else if (!strcasecmp(action, "goto_private")) {
 782                 goto_private();
 783         } else if (!strcasecmp(action, "zapped_list")) {
 784                 zapped_list();
 785         } else if (!strcasecmp(action, "display_zap")) {
 786                 display_zap();
 787         } else if (!strcasecmp(action, "zap")) {
 788                 zap();
 789         } else if (!strcasecmp(action, "display_entroom")) {
 790                 display_entroom();
 791         } else if (!strcasecmp(action, "entroom")) {
 792                 entroom();
 793         } else if (!strcasecmp(action, "display_editroom")) {
 794                 display_editroom();
 795         } else if (!strcasecmp(action, "editroom")) {
 796                 editroom();
 797         } else if (!strcasecmp(action, "display_editinfo")) {
 798                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 799         } else if (!strcasecmp(action, "editinfo")) {
 800                 save_edit("Room info", "EINF 1", 1);
 801         } else if (!strcasecmp(action, "display_editbio")) {
 802                 sprintf(buf, "RBIO %s", WC->wc_username);
 803                 display_edit("Your bio", "NOOP", buf, "editbio");
 804         } else if (!strcasecmp(action, "editbio")) {
 805                 save_edit("Your bio", "EBIO", 0);
 806         } else if (!strcasecmp(action, "confirm_delete_room")) {
 807                 confirm_delete_room();
 808         } else if (!strcasecmp(action, "delete_room")) {
 809                 delete_room();
 810         } else if (!strcasecmp(action, "validate")) {
 811                 validate();
 812         } else if (!strcasecmp(action, "display_editpic")) {
 813                 display_graphics_upload("your photo",
 814                                         "UIMG 0|_userpic_",
 815                                         "/editpic");
 816         } else if (!strcasecmp(action, "editpic")) {
 817                 do_graphics_upload("UIMG 1|_userpic_");
 818         } else if (!strcasecmp(action, "display_editroompic")) {
 819                 display_graphics_upload("the graphic for this room",
 820                                         "UIMG 0|_roompic_",
 821                                         "/editroompic");
 822         } else if (!strcasecmp(action, "editroompic")) {
 823                 do_graphics_upload("UIMG 1|_roompic_");
 824         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 825                 select_floor_to_edit_pic();
 826         } else if (!strcasecmp(action, "display_editfloorpic")) {
 827                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 828                         bstr("which_floor"));
 829                 display_graphics_upload("the graphic for this floor",
 830                                         buf,
 831                                         "/editfloorpic");
 832         } else if (!strcasecmp(action, "editfloorpic")) {
 833                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 834                         bstr("which_floor"));
 835                 do_graphics_upload(buf);
 836         } else if (!strcasecmp(action, "display_reg")) {
 837                 display_reg(0);
 838         } else if (!strcasecmp(action, "register")) {
 839                 register_user();
 840         } else if (!strcasecmp(action, "display_changepw")) {
 841                 display_changepw();
 842         } else if (!strcasecmp(action, "changepw")) {
 843                 changepw();
 844         } else if (!strcasecmp(action, "display_edit_node")) {
 845                 display_edit_node();
 846         } else if (!strcasecmp(action, "display_netconf")) {
 847                 display_netconf();
 848         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 849                 display_confirm_unshare();
 850         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 851                 display_confirm_delete_node();
 852         } else if (!strcasecmp(action, "delete_node")) {
 853                 delete_node();
 854         } else if (!strcasecmp(action, "unshare")) {
 855                 unshare();
 856         } else if (!strcasecmp(action, "display_add_node")) {
 857                 display_add_node();
 858         } else if (!strcasecmp(action, "add_node")) {
 859                 add_node();
 860         } else if (!strcasecmp(action, "display_share")) {
 861                 display_share();
 862         } else if (!strcasecmp(action, "share")) {
 863                 share();
 864         } else if (!strcasecmp(action, "terminate_session")) {
 865                 slrp_highest();
 866                 terminate_session();
 867         } else if (!strcasecmp(action, "edit_me")) {
 868                 edit_me();
 869         } else if (!strcasecmp(action, "display_siteconfig")) {
 870                 display_siteconfig();
 871         } else if (!strcasecmp(action, "siteconfig")) {
 872                 siteconfig();
 873         } else if (!strcasecmp(action, "display_generic")) {
 874                 display_generic();
 875         } else if (!strcasecmp(action, "do_generic")) {
 876                 do_generic();
 877         } else if (!strcasecmp(action, "display_menubar")) {
 878                 display_menubar(1);
 879         } else if (!strcasecmp(action, "diagnostics")) {
 880                 output_headers(1);
 881
 882                 wprintf("You're in session %d<HR>\n", WC->wc_session);
 883                 wprintf("Command: <BR><PRE>\n");
 884                 escputs(cmd);
 885                 wprintf("</PRE><HR>\n");
 886                 wprintf("Variables: <BR><PRE>\n");
 887                 dump_vars();
 888                 wprintf("</PRE><HR>\n");
 889                 wDumpContent(1);
 890         }
 891         /* When all else fais, display the main menu. */
 892         else {
 893                 display_main_menu();
 894         }
 895
 896         fflush(stdout);
 897         if (content != NULL) {
 898                 free(content);
 899                 content = NULL;
 900         }
 901         free_urls();
 902         if (WC->upload_length > 0) {
 903                 free(WC->upload);
 904                 WC->upload_length = 0;
 905         }
 906 }