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 <stdlib.h>
  12 #ifdef HAVE_UNISTD_H
  13 #include <unistd.h>
  14 #endif
  15 #include <stdio.h>
  16 #include <ctype.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #include <sys/stat.h>
  20 #include <stdarg.h>
  21 #include "webcit.h"
  22 #include "child.h"
  23 #include "mime_parser.h"
  24
  25 int fake_frames = 0;
  26
  27 int wc_session;
  28 char wc_username[256];
  29 char wc_password[256];
  30 char wc_roomname[256];
  31 int TransactionCount = 0;
  32 int connected = 0;
  33 int logged_in = 0;
  34 int axlevel;
  35 char *ExpressMessages = NULL;
  36 int noframes = 0;
  37 int new_mail = 0;
  38 int need_vali = 0;
  39
  40 struct webcontent *wlist = NULL;
  41 struct webcontent *wlast = NULL;
  42
  43 struct urlcontent *urlstrings = NULL;
  44
  45 static const char *defaulthost = DEFAULT_HOST;
  46 static const char *defaultport = DEFAULT_PORT;
  47
  48 int upload_length = 0;
  49 char *upload;
  50
  51
  52 void unescape_input(char *buf)
  53 {
  54         int a, b;
  55         char hex[3];
  56
  57         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  58                 buf[strlen(buf) - 1] = 0;
  59
  60         for (a = 0; a < strlen(buf); ++a) {
  61                 if (buf[a] == '+')
  62                         buf[a] = ' ';
  63                 if (buf[a] == '%') {
  64                         hex[0] = buf[a + 1];
  65                         hex[1] = buf[a + 2];
  66                         hex[2] = 0;
  67                         sscanf(hex, "%02x", &b);
  68                         buf[a] = (char) b;
  69                         strcpy(&buf[a + 1], &buf[a + 3]);
  70                 }
  71         }
  72
  73 }
  74
  75
  76 void addurls(char *url)
  77 {
  78         char *up, *ptr;
  79         char buf[256];
  80         int a, b;
  81         struct urlcontent *u;
  82
  83         up = url;
  84         while (strlen(up) > 0) {
  85
  86                 /* locate the = sign */
  87                 strncpy(buf, up, 255);
  88                 b = (-1);
  89                 for (a = 255; a >= 0; --a)
  90                         if (buf[a] == '=')
  91                                 b = a;
  92                 if (b < 0)
  93                         return;
  94                 buf[b] = 0;
  95
  96                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  97                 u->next = urlstrings;
  98                 urlstrings = u;
  99                 strcpy(u->url_key, buf);
 100
 101                 /* now chop that part off */
 102                 for (a = 0; a <= b; ++a)
 103                         ++up;
 104
 105                 /* locate the & sign */
 106                 ptr = up;
 107                 b = strlen(up);
 108                 for (a = 0; a < strlen(up); ++a) {
 109                         if (!strncmp(ptr, "&", 1)) {
 110                                 b = a;
 111                                 break;
 112                         }
 113                         ++ptr;
 114                 }
 115                 ptr = up;
 116                 for (a = 0; a < b; ++a)
 117                         ++ptr;
 118                 strcpy(ptr, "");
 119
 120                 u->url_data = malloc(strlen(up) + 1);
 121                 strcpy(u->url_data, up);
 122                 u->url_data[b] = 0;
 123                 unescape_input(u->url_data);
 124                 up = ptr;
 125                 ++up;
 126         }
 127 }
 128
 129 void free_urls(void)
 130 {
 131         struct urlcontent *u;
 132
 133         while (urlstrings != NULL) {
 134                 free(urlstrings->url_data);
 135                 u = urlstrings->next;
 136                 free(urlstrings);
 137                 urlstrings = u;
 138         }
 139 }
 140
 141 /*
 142  * Diagnostic function to display the contents of all variables
 143  */
 144 void dump_vars(void)
 145 {
 146         struct urlcontent *u;
 147
 148         for (u = urlstrings; u != NULL; u = u->next) {
 149                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 150         }
 151 }
 152
 153 char *bstr(char *key)
 154 {
 155         struct urlcontent *u;
 156
 157         for (u = urlstrings; u != NULL; u = u->next) {
 158                 if (!strcasecmp(u->url_key, key))
 159                         return (u->url_data);
 160         }
 161         return ("");
 162 }
 163
 164
 165 void wprintf(const char *format,...)
 166 {
 167         va_list arg_ptr;
 168         struct webcontent *wptr;
 169
 170         wptr = (struct webcontent *) malloc(sizeof(struct webcontent));
 171         wptr->next = NULL;
 172         if (wlist == NULL) {
 173                 wlist = wptr;
 174                 wlast = wptr;
 175         } else {
 176                 wlast->next = wptr;
 177                 wlast = wptr;
 178         }
 179
 180         va_start(arg_ptr, format);
 181         vsprintf(wptr->w_data, format, arg_ptr);
 182         va_end(arg_ptr);
 183 }
 184
 185 int wContentLength(void)
 186 {
 187         struct webcontent *wptr;
 188         int len = 0;
 189
 190         for (wptr = wlist; wptr != NULL; wptr = wptr->next) {
 191                 len = len + strlen(wptr->w_data);
 192         }
 193
 194         return (len);
 195 }
 196
 197 /*
 198  * wDumpContent() takes all the stuff that's been queued up using
 199  * the wprintf() and escputs() functions, and sends it out to the browser.
 200  * By queuing instead of transmitting as it's generated, we're able to
 201  * calculate a Content-length: header.
 202  *
 203  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 204  * append the main menu (if in noframes mode) and closing tags, or 2 to
 205  * append the closing tags only.
 206  */
 207 void wDumpContent(int print_standard_html_footer)
 208 {
 209         struct webcontent *wptr;
 210
 211         if (fake_frames) {
 212                 wprintf("</TD></TR></TABLE></TABLE>\n");
 213                 fake_frames = 0;
 214         }
 215
 216         if (print_standard_html_footer) {
 217                 if ((noframes) && (print_standard_html_footer != 2)) {
 218                         wprintf("<BR>");
 219                         /* embed_main_menu(); */  /* not any more */
 220                 }
 221                 wprintf("</BODY></HTML>\n");
 222         }
 223         printf("Content-type: text/html\n");
 224         printf("Content-length: %d\n", wContentLength());
 225         printf("\n");
 226
 227         while (wlist != NULL) {
 228                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 229                 wptr = wlist->next;
 230                 free(wlist);
 231                 wlist = wptr;
 232         }
 233         wlast = NULL;
 234 }
 235
 236
 237 void escputs1(char *strbuf, int nbsp)
 238 {
 239         int a;
 240
 241         for (a = 0; a < strlen(strbuf); ++a) {
 242                 if (strbuf[a] == '<')
 243                         wprintf("&lt;");
 244                 else if (strbuf[a] == '>')
 245                         wprintf("&gt;");
 246                 else if (strbuf[a] == '&')
 247                         wprintf("&amp;");
 248                 else if (strbuf[a] == 34)
 249                         wprintf("&quot;");
 250                 else if (strbuf[a] == LB)
 251                         wprintf("<");
 252                 else if (strbuf[a] == RB)
 253                         wprintf(">");
 254                 else if (strbuf[a] == QU)
 255                         wprintf("\"");
 256                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 257                         wprintf("&nbsp;");
 258                 } else {
 259                         wprintf("%c", strbuf[a]);
 260                 }
 261         }
 262 }
 263
 264 void escputs(char *strbuf)
 265 {
 266         escputs1(strbuf, 0);
 267 }
 268
 269
 270
 271 char *urlesc(char *strbuf)
 272 {
 273         int a, b, c;
 274         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 275         static char outbuf[512];
 276
 277         strcpy(outbuf, "");
 278
 279         for (a = 0; a < strlen(strbuf); ++a) {
 280                 c = 0;
 281                 for (b = 0; b < strlen(ec); ++b) {
 282                         if (strbuf[a] == ec[b])
 283                                 c = 1;
 284                 }
 285                 b = strlen(outbuf);
 286                 if (c == 1)
 287                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 288                 else
 289                         sprintf(&outbuf[b], "%c", strbuf[a]);
 290         }
 291         return (outbuf);
 292 }
 293
 294 void urlescputs(char *strbuf)
 295 {
 296         wprintf("%s", urlesc(strbuf));
 297 }
 298
 299
 300
 301
 302 /*
 303  * Get a line of text from the webserver (which originally came from the
 304  * user's browser), checking for sanity etc.
 305  */
 306 char *getz(char *buf)
 307 {
 308         int e = 0;
 309
 310         bzero(buf, 256);
 311
 312         /* If fgets() fails, it's because the webserver crashed, so kill off
 313          * the session too.
 314          */
 315         if (fgets(buf, 256, stdin) == NULL) {
 316                 e = errno;
 317                 fprintf(stderr, "webcit: exit code %d (%s)\n",
 318                         e, strerror(e));
 319                 fflush(stderr);
 320                 exit(e);
 321
 322         /* Otherwise, strip out nonprintables and resume our happy day.
 323          */
 324         } else {
 325                 while ((strlen(buf) > 0) && (!isprint(buf[strlen(buf) - 1])))
 326                         buf[strlen(buf) - 1] = 0;
 327                 return buf;
 328         }
 329 }
 330
 331
 332
 333 /*
 334  * Output all that important stuff that the browser will want to see
 335  *
 336  * If print_standard_html_head is nonzero, we also get some standard HTML
 337  * headers.  If it's set to 2, the session is considered to be closing.
 338  */
 339 void output_headers(int print_standard_html_head)
 340 {
 341
 342         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 343         char cookie[256];
 344
 345         printf("Server: %s\n", SERVER);
 346         printf("Connection: close\n");
 347
 348         if (print_standard_html_head > 0) {
 349                 printf("Pragma: no-cache\n");
 350                 printf("Cache-Control: no-store\n");
 351         }
 352         stuff_to_cookie(cookie, wc_session, wc_username, wc_password,
 353                         wc_roomname, noframes);
 354         if (print_standard_html_head == 2) {
 355                 printf("X-WebCit-Session: close\n");
 356                 printf("Set-cookie: webcit=%s\n", unset);
 357         } else {
 358                 printf("Set-cookie: webcit=%s\n", cookie);
 359         }
 360
 361         if (print_standard_html_head > 0) {
 362                 wprintf("<HTML><HEAD><TITLE>");
 363                 escputs(serv_info.serv_humannode);
 364                 wprintf("</TITLE></HEAD>");
 365                 if (ExpressMessages != NULL) {
 366                         wprintf("<SCRIPT language=\"javascript\">\n");
 367                         wprintf("function ExpressMessage() {\n");
 368                         wprintf(" alert(\"");
 369                         escputs(ExpressMessages);
 370                         wprintf("\")\n");
 371                         wprintf(" }\n </SCRIPT>\n");
 372                 }
 373                 wprintf("<BODY ");
 374                 if (ExpressMessages != NULL) {
 375                         wprintf("onload=\"ExpressMessage()\" ");
 376                         free(ExpressMessages);
 377                         ExpressMessages = NULL;
 378                 }
 379                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 380
 381
 382         if ((print_standard_html_head == 1) && (noframes == 1)) {
 383                 wprintf("<TABLE border=0 width=100%>");
 384                 wprintf("<TR VALIGN=TOP><TD>");
 385
 386                 display_menubar(0);
 387
 388                 wprintf("</TD><TD VALIGN=TOP>"
 389                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 390                         "<TD>\n");
 391
 392                 embed_room_banner(NULL);
 393
 394                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 395
 396
 397                 fake_frames = 1;
 398                 }
 399         }
 400 }
 401
 402
 403
 404 void ExpressMessageCat(char *buf) {
 405         if (ExpressMessages == NULL) {
 406                 ExpressMessages = malloc(strlen(buf) + 4);
 407                 strcpy(ExpressMessages, "");
 408         } else {
 409                 ExpressMessages = realloc(ExpressMessages,
 410                         (strlen(ExpressMessages) + strlen(buf) + 4));
 411         }
 412         strcat(ExpressMessages, buf);
 413         strcat(ExpressMessages, "\\n");
 414 }
 415
 416
 417 void check_for_express_messages()
 418 {
 419         char buf[256];
 420
 421         serv_puts("PEXP");
 422         serv_gets(buf);
 423         if (buf[0] == '1') {
 424                 while (serv_gets(buf), strcmp(buf, "000")) {
 425                         ExpressMessageCat(buf);
 426                 }
 427         }
 428 }
 429
 430
 431
 432
 433 void output_static(char *what)
 434 {
 435         char buf[256];
 436         FILE *fp;
 437         struct stat statbuf;
 438         off_t bytes;
 439
 440         sprintf(buf, "static/%s", what);
 441         fp = fopen(buf, "rb");
 442         if (fp == NULL) {
 443                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 444                 output_headers(0);
 445                 printf("Content-Type: text/plain\n");
 446                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 447                 printf("Content-length: %d\n", strlen(buf));
 448                 printf("\n");
 449                 fwrite(buf, strlen(buf), 1, stdout);
 450         } else {
 451                 printf("HTTP/1.0 200 OK\n");
 452                 output_headers(0);
 453
 454                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 455                         printf("Content-type: image/gif\n");
 456                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 457                         printf("Content-type: image/jpeg\n");
 458                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 459                         printf("Content-type: text/html\n");
 460                 else
 461                         printf("Content-type: application/octet-stream\n");
 462
 463                 fstat(fileno(fp), &statbuf);
 464                 bytes = statbuf.st_size;
 465                 printf("Content-length: %ld\n", (long) bytes);
 466                 printf("\n");
 467                 while (bytes--) {
 468                         putc(getc(fp), stdout);
 469                 }
 470                 fflush(stdout);
 471                 fclose(fp);
 472         }
 473 }
 474
 475 void output_image()
 476 {
 477         char buf[256];
 478         char xferbuf[4096];
 479         off_t bytes;
 480         off_t thisblock;
 481         off_t accomplished = 0L;
 482
 483
 484         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 485         serv_gets(buf);
 486         if (buf[0] == '2') {
 487                 bytes = extract_long(&buf[4], 0);
 488                 printf("HTTP/1.0 200 OK\n");
 489                 output_headers(0);
 490                 printf("Content-type: image/gif\n");
 491                 printf("Content-length: %ld\n", (long) bytes);
 492                 printf("\n");
 493
 494                 while (bytes > (off_t) 0) {
 495                         thisblock = (off_t) sizeof(xferbuf);
 496                         if (thisblock > bytes)
 497                                 thisblock = bytes;
 498                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 499                         serv_gets(buf);
 500                         if (buf[0] == '6')
 501                                 thisblock = extract_long(&buf[4], 0);
 502                         serv_read(xferbuf, (int) thisblock);
 503                         fwrite(xferbuf, thisblock, 1, stdout);
 504                         bytes = bytes - thisblock;
 505                         accomplished = accomplished + thisblock;
 506                 }
 507                 fflush(stdout);
 508                 serv_puts("CLOS");
 509                 serv_gets(buf);
 510         } else {
 511                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 512                 output_headers(0);
 513                 printf("Content-Type: text/plain\n");
 514                 sprintf(buf, "Error retrieving image\n");
 515                 printf("Content-length: %d\n", strlen(buf));
 516                 printf("\n");
 517                 fwrite(buf, strlen(buf), 1, stdout);
 518         }
 519
 520 }
 521
 522
 523 /*
 524  * Convenience functions to display a page containing only a string
 525  */
 526 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 527 {
 528         printf("HTTP/1.0 200 OK\n");
 529         output_headers(1);
 530         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 531         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 532         wprintf("<B>%s</B>\n", titlebarmsg);
 533         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 534         escputs(messagetext);
 535
 536         if (noframes) {
 537                 wprintf("<HR>\n");
 538                 embed_main_menu();
 539         }
 540         wDumpContent(1);
 541 }
 542
 543 void display_error(char *errormessage)
 544 {
 545         convenience_page("770000", "Error", errormessage);
 546 }
 547
 548 void display_success(char *successmessage)
 549 {
 550         convenience_page("007700", "OK", successmessage);
 551 }
 552
 553
 554
 555 void extract_action(char *actbuf, char *cmdbuf)
 556 {
 557         int i;
 558
 559         strcpy(actbuf, cmdbuf);
 560         if (!strncasecmp(actbuf, "GET /", 5))
 561                 strcpy(actbuf, &actbuf[5]);
 562         if (!strncasecmp(actbuf, "PUT /", 5))
 563                 strcpy(actbuf, &actbuf[5]);
 564         if (!strncasecmp(actbuf, "POST /", 6))
 565                 strcpy(actbuf, &actbuf[6]);
 566
 567         for (i = 0; i < strlen(actbuf); ++i) {
 568                 if (actbuf[i] == ' ') {
 569                         actbuf[i] = 0;
 570                         i = 0;
 571                 }
 572                 if (actbuf[i] == '/') {
 573                         actbuf[i] = 0;
 574                         i = 0;
 575                 }
 576                 if (actbuf[i] == '?') {
 577                         actbuf[i] = 0;
 578                         i = 0;
 579                 }
 580                 if (actbuf[i] == '&') {
 581                         actbuf[i] = 0;
 582                         i = 0;
 583                 }
 584         }
 585 }
 586
 587
 588 void upload_handler(char *name, char *filename, char *encoding,
 589                     void *content, char *cbtype, size_t length)
 590 {
 591
 592         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 593         fprintf(stderr, "    name = %s\n", name);
 594         fprintf(stderr, "filename = %s\n", filename);
 595         fprintf(stderr, "encoding = %s\n", encoding);
 596         fprintf(stderr, "    type = %s\n", cbtype);
 597         fprintf(stderr, "  length = %d\n", length);
 598
 599         if (strlen(name) > 0) {
 600                 upload = malloc(length);
 601                 if (upload != NULL) {
 602                         upload_length = length;
 603                         memcpy(upload, content, length);
 604                 }
 605         }
 606 }
 607
 608
 609 void session_loop(char *browser_host, char *user_agent)
 610 {
 611         char cmd[256];
 612         char action[256];
 613         char buf[256];
 614         int a, b;
 615         int ContentLength = 0;
 616         char ContentType[512];
 617         char *content;
 618
 619         /* We stuff these with the values coming from the client cookies,
 620          * so we can use them to reconnect a timed out session if we have to.
 621          */
 622         char c_host[256];
 623         char c_port[256];
 624         char c_username[256];
 625         char c_password[256];
 626         char c_roomname[256];
 627         char cookie[256];
 628
 629         strcpy(c_host, defaulthost);
 630         strcpy(c_port, defaultport);
 631         strcpy(c_username, "");
 632         strcpy(c_password, "");
 633         strcpy(c_roomname, "");
 634
 635         upload_length = 0;
 636         upload = NULL;
 637
 638         if (getz(cmd) == NULL)
 639                 return;
 640         extract_action(action, cmd);
 641
 642         do {
 643                 if (getz(buf) == NULL)
 644                         return;
 645
 646                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 647                         strcpy(cookie, &buf[15]);
 648                         cookie_to_stuff(cookie, NULL,
 649                                       c_username, c_password, c_roomname,
 650                                         &noframes);
 651                 }
 652                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 653                         ContentLength = atoi(&buf[16]);
 654                 }
 655                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 656                         strcpy(ContentType, &buf[14]);
 657                 }
 658         } while (strlen(buf) > 0);
 659
 660         ++TransactionCount;
 661
 662         if (ContentLength > 0) {
 663                 content = malloc(ContentLength + 1);
 664                 fread(content, ContentLength, 1, stdin);
 665
 666                 content[ContentLength] = 0;
 667
 668                 if (!strncasecmp(ContentType,
 669                               "application/x-www-form-urlencoded", 33)) {
 670                         addurls(content);
 671                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 672                         mime_parser(content, ContentLength, ContentType,
 673                                     *upload_handler);
 674                 }
 675         } else {
 676                 content = NULL;
 677         }
 678
 679         /* If there are variables in the URL, we must grab them now */
 680         for (a = 0; a < strlen(cmd); ++a)
 681                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 682                         for (b = a; b < strlen(cmd); ++b)
 683                                 if (isspace(cmd[b]))
 684                                         cmd[b] = 0;
 685                         addurls(&cmd[a + 1]);
 686                         cmd[a] = 0;
 687                 }
 688         /*
 689          * If we're not connected to a Citadel server, try to hook up the
 690          * connection now.  Preference is given to the host and port specified
 691          * by browser cookies, if cookies have been supplied.
 692          */
 693         if (!connected) {
 694                 if (strlen(bstr("host")) > 0)
 695                         strcpy(c_host, bstr("host"));
 696                 if (strlen(bstr("port")) > 0)
 697                         strcpy(c_port, bstr("port"));
 698                 serv_sock = connectsock(c_host, c_port, "tcp");
 699                 connected = 1;
 700                 serv_gets(buf); /* get the server welcome message */
 701                 get_serv_info(browser_host, user_agent);
 702         }
 703         check_for_express_messages();
 704
 705         /*
 706          * If we're not logged in, but we have username and password cookies
 707          * supplied by the browser, try using them to log in.
 708          */
 709         if ((!logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 710                 serv_printf("USER %s", c_username);
 711                 serv_gets(buf);
 712                 if (buf[0] == '3') {
 713                         serv_printf("PASS %s", c_password);
 714                         serv_gets(buf);
 715                         if (buf[0] == '2') {
 716                                 become_logged_in(c_username, c_password, buf);
 717                         }
 718                 }
 719         }
 720         /*
 721          * If we don't have a current room, but a cookie specifying the
 722          * current room is supplied, make an effort to go there.
 723          */
 724         if ((strlen(wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 725                 serv_printf("GOTO %s", c_roomname);
 726                 serv_gets(buf);
 727                 if (buf[0] == '2') {
 728                         strcpy(wc_roomname, c_roomname);
 729                 }
 730         }
 731         if (!strcasecmp(action, "static")) {
 732                 strcpy(buf, &cmd[12]);
 733                 for (a = 0; a < strlen(buf); ++a)
 734                         if (isspace(buf[a]))
 735                                 buf[a] = 0;
 736                 output_static(buf);
 737         } else if (!strcasecmp(action, "image")) {
 738                 output_image();
 739         } else if ((!logged_in) && (!strcasecmp(action, "login"))) {
 740                 do_login();
 741         } else if (!logged_in) {
 742                 display_login(NULL);
 743         }
 744         /* Various commands... */
 745
 746         else if (!strcasecmp(action, "do_welcome")) {
 747                 do_welcome();
 748         } else if (!strcasecmp(action, "display_main_menu")) {
 749                 display_main_menu();
 750         } else if (!strcasecmp(action, "advanced")) {
 751                 display_advanced_menu();
 752         } else if (!strcasecmp(action, "whobbs")) {
 753                 whobbs();
 754         } else if (!strcasecmp(action, "knrooms")) {
 755                 list_all_rooms_by_floor();
 756         } else if (!strcasecmp(action, "gotonext")) {
 757                 slrp_highest();
 758                 gotonext();
 759         } else if (!strcasecmp(action, "skip")) {
 760                 gotonext();
 761         } else if (!strcasecmp(action, "ungoto")) {
 762                 ungoto();
 763         } else if (!strcasecmp(action, "dotgoto")) {
 764                 slrp_highest();
 765                 smart_goto(bstr("room"));
 766         } else if (!strcasecmp(action, "termquit")) {
 767                 do_logout();
 768         } else if (!strcasecmp(action, "readnew")) {
 769                 readloop("readnew");
 770         } else if (!strcasecmp(action, "readold")) {
 771                 readloop("readold");
 772         } else if (!strcasecmp(action, "readfwd")) {
 773                 readloop("readfwd");
 774         } else if (!strcasecmp(action, "display_enter")) {
 775                 display_enter();
 776         } else if (!strcasecmp(action, "post")) {
 777                 post_message();
 778         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 779                 confirm_delete_msg();
 780         } else if (!strcasecmp(action, "delete_msg")) {
 781                 delete_msg();
 782         } else if (!strcasecmp(action, "confirm_move_msg")) {
 783                 confirm_move_msg();
 784         } else if (!strcasecmp(action, "move_msg")) {
 785                 move_msg();
 786         } else if (!strcasecmp(action, "userlist")) {
 787                 userlist();
 788         } else if (!strcasecmp(action, "showuser")) {
 789                 showuser();
 790         } else if (!strcasecmp(action, "display_page")) {
 791                 display_page();
 792         } else if (!strcasecmp(action, "page_user")) {
 793                 page_user();
 794         } else if (!strcasecmp(action, "chat")) {
 795                 do_chat();
 796         } else if (!strcasecmp(action, "display_private")) {
 797                 display_private("", 0);
 798         } else if (!strcasecmp(action, "goto_private")) {
 799                 goto_private();
 800         } else if (!strcasecmp(action, "zapped_list")) {
 801                 zapped_list();
 802         } else if (!strcasecmp(action, "display_zap")) {
 803                 display_zap();
 804         } else if (!strcasecmp(action, "zap")) {
 805                 zap();
 806         } else if (!strcasecmp(action, "display_entroom")) {
 807                 display_entroom();
 808         } else if (!strcasecmp(action, "entroom")) {
 809                 entroom();
 810         } else if (!strcasecmp(action, "display_editroom")) {
 811                 display_editroom();
 812         } else if (!strcasecmp(action, "editroom")) {
 813                 editroom();
 814         } else if (!strcasecmp(action, "display_editinfo")) {
 815                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 816         } else if (!strcasecmp(action, "editinfo")) {
 817                 save_edit("Room info", "EINF 1", 1);
 818         } else if (!strcasecmp(action, "display_editbio")) {
 819                 sprintf(buf, "RBIO %s", wc_username);
 820                 display_edit("Your bio", "NOOP", buf, "editbio");
 821         } else if (!strcasecmp(action, "editbio")) {
 822                 save_edit("Your bio", "EBIO", 0);
 823         } else if (!strcasecmp(action, "confirm_delete_room")) {
 824                 confirm_delete_room();
 825         } else if (!strcasecmp(action, "delete_room")) {
 826                 delete_room();
 827         } else if (!strcasecmp(action, "validate")) {
 828                 validate();
 829         } else if (!strcasecmp(action, "display_editpic")) {
 830                 display_graphics_upload("your photo",
 831                                         "UIMG 0|_userpic_",
 832                                         "/editpic");
 833         } else if (!strcasecmp(action, "editpic")) {
 834                 do_graphics_upload("UIMG 1|_userpic_");
 835         } else if (!strcasecmp(action, "display_editroompic")) {
 836                 display_graphics_upload("the graphic for this room",
 837                                         "UIMG 0|_roompic_",
 838                                         "/editroompic");
 839         } else if (!strcasecmp(action, "editroompic")) {
 840                 do_graphics_upload("UIMG 1|_roompic_");
 841         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 842                 select_floor_to_edit_pic();
 843         } else if (!strcasecmp(action, "display_editfloorpic")) {
 844                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 845                         bstr("which_floor"));
 846                 display_graphics_upload("the graphic for this floor",
 847                                         buf,
 848                                         "/editfloorpic");
 849         } else if (!strcasecmp(action, "editfloorpic")) {
 850                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 851                         bstr("which_floor"));
 852                 do_graphics_upload(buf);
 853         } else if (!strcasecmp(action, "display_reg")) {
 854                 display_reg(0);
 855         } else if (!strcasecmp(action, "register")) {
 856                 register_user();
 857         } else if (!strcasecmp(action, "display_changepw")) {
 858                 display_changepw();
 859         } else if (!strcasecmp(action, "changepw")) {
 860                 changepw();
 861         } else if (!strcasecmp(action, "display_edit_node")) {
 862                 display_edit_node();
 863         } else if (!strcasecmp(action, "display_netconf")) {
 864                 display_netconf();
 865         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 866                 display_confirm_unshare();
 867         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 868                 display_confirm_delete_node();
 869         } else if (!strcasecmp(action, "delete_node")) {
 870                 delete_node();
 871         } else if (!strcasecmp(action, "unshare")) {
 872                 unshare();
 873         } else if (!strcasecmp(action, "display_add_node")) {
 874                 display_add_node();
 875         } else if (!strcasecmp(action, "add_node")) {
 876                 add_node();
 877         } else if (!strcasecmp(action, "display_share")) {
 878                 display_share();
 879         } else if (!strcasecmp(action, "share")) {
 880                 share();
 881         } else if (!strcasecmp(action, "terminate_session")) {
 882                 terminate_session();
 883         } else if (!strcasecmp(action, "edit_me")) {
 884                 edit_me();
 885         } else if (!strcasecmp(action, "display_siteconfig")) {
 886                 display_siteconfig();
 887         } else if (!strcasecmp(action, "siteconfig")) {
 888                 siteconfig();
 889         } else if (!strcasecmp(action, "display_generic")) {
 890                 display_generic();
 891         } else if (!strcasecmp(action, "do_generic")) {
 892                 do_generic();
 893         } else if (!strcasecmp(action, "display_menubar")) {
 894                 display_menubar(1);
 895         }
 896         /* When all else fails... */
 897         else {
 898                 printf("HTTP/1.0 200 OK\n");
 899                 output_headers(1);
 900
 901                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 902                 wprintf("You're in session %d<HR>\n", wc_session);
 903                 wprintf("Command: <BR><PRE>\n");
 904                 escputs(cmd);
 905                 wprintf("</PRE><HR>\n");
 906                 wprintf("Variables: <BR><PRE>\n");
 907                 dump_vars();
 908                 wprintf("</PRE><HR>\n");
 909                 wDumpContent(1);
 910         }
 911
 912         fflush(stdout);
 913         if (content != NULL) {
 914                 free(content);
 915                 content = NULL;
 916         }
 917         free_urls();
 918         if (upload_length > 0) {
 919                 free(upload);
 920                 upload_length = 0;
 921         }
 922 }
 923
 924 int main(int argc, char *argv[])
 925 {
 926
 927         char browser[256];
 928         int bd;
 929
 930         if (argc != 6) {
 931                 fprintf(stderr,
 932                         "webcit: usage error (argc must be 6, not %d)\n",
 933                         argc);
 934                 return 1;
 935         }
 936
 937         wc_session = atoi(argv[1]);
 938         defaulthost = argv[2];
 939         defaultport = argv[3];
 940
 941         strcpy(wc_username, "");
 942         strcpy(wc_password, "");
 943         strcpy(wc_roomname, "");
 944
 945         /* Clear out serv_info and temporarily set the value of serv_humannode
 946          * to a default value, because it'll be used in HTML page titles
 947          */
 948         memset(&serv_info, 0, sizeof(serv_info));
 949         strcpy(serv_info.serv_humannode, "WebCit");
 950
 951         strcpy(browser, argv[5]);
 952         bd = browser_braindamage_check(browser);
 953         if (bd == B_NO)
 954                 noframes = 1;
 955         else
 956                 noframes = 0;
 957
 958         while (1) {
 959                 session_loop(argv[4], browser);
 960         }
 961 }