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 wc_session;
  26 char wc_username[256];
  27 char wc_password[256];
  28 char wc_roomname[256];
  29 int TransactionCount = 0;
  30 int connected = 0;
  31 int logged_in = 0;
  32 int axlevel;
  33 char *ExpressMessages = NULL;
  34 int new_mail = 0;
  35 int need_vali = 0;
  36
  37 /* This variable is set to 1 if the room banner and menubar have been
  38  * displayed, and we need to close the <TABLE> tags.
  39  */
  40 int fake_frames = 0;
  41
  42 struct webcontent *wlist = NULL;
  43 struct webcontent *wlast = NULL;
  44
  45 struct urlcontent *urlstrings = NULL;
  46
  47 static const char *defaulthost = DEFAULT_HOST;
  48 static const char *defaultport = DEFAULT_PORT;
  49
  50 int upload_length = 0;
  51 char *upload;
  52
  53
  54 void unescape_input(char *buf)
  55 {
  56         int a, b;
  57         char hex[3];
  58
  59         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  60                 buf[strlen(buf) - 1] = 0;
  61
  62         for (a = 0; a < strlen(buf); ++a) {
  63                 if (buf[a] == '+')
  64                         buf[a] = ' ';
  65                 if (buf[a] == '%') {
  66                         hex[0] = buf[a + 1];
  67                         hex[1] = buf[a + 2];
  68                         hex[2] = 0;
  69                         sscanf(hex, "%02x", &b);
  70                         buf[a] = (char) b;
  71                         strcpy(&buf[a + 1], &buf[a + 3]);
  72                 }
  73         }
  74
  75 }
  76
  77
  78 void addurls(char *url)
  79 {
  80         char *up, *ptr;
  81         char buf[256];
  82         int a, b;
  83         struct urlcontent *u;
  84
  85         up = url;
  86         while (strlen(up) > 0) {
  87
  88                 /* locate the = sign */
  89                 strncpy(buf, up, 255);
  90                 b = (-1);
  91                 for (a = 255; a >= 0; --a)
  92                         if (buf[a] == '=')
  93                                 b = a;
  94                 if (b < 0)
  95                         return;
  96                 buf[b] = 0;
  97
  98                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  99                 u->next = urlstrings;
 100                 urlstrings = u;
 101                 strcpy(u->url_key, buf);
 102
 103                 /* now chop that part off */
 104                 for (a = 0; a <= b; ++a)
 105                         ++up;
 106
 107                 /* locate the & sign */
 108                 ptr = up;
 109                 b = strlen(up);
 110                 for (a = 0; a < strlen(up); ++a) {
 111                         if (!strncmp(ptr, "&", 1)) {
 112                                 b = a;
 113                                 break;
 114                         }
 115                         ++ptr;
 116                 }
 117                 ptr = up;
 118                 for (a = 0; a < b; ++a)
 119                         ++ptr;
 120                 strcpy(ptr, "");
 121
 122                 u->url_data = malloc(strlen(up) + 1);
 123                 strcpy(u->url_data, up);
 124                 u->url_data[b] = 0;
 125                 unescape_input(u->url_data);
 126                 up = ptr;
 127                 ++up;
 128         }
 129 }
 130
 131 void free_urls(void)
 132 {
 133         struct urlcontent *u;
 134
 135         while (urlstrings != NULL) {
 136                 free(urlstrings->url_data);
 137                 u = urlstrings->next;
 138                 free(urlstrings);
 139                 urlstrings = u;
 140         }
 141 }
 142
 143 /*
 144  * Diagnostic function to display the contents of all variables
 145  */
 146 void dump_vars(void)
 147 {
 148         struct urlcontent *u;
 149
 150         for (u = urlstrings; u != NULL; u = u->next) {
 151                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 152         }
 153 }
 154
 155 char *bstr(char *key)
 156 {
 157         struct urlcontent *u;
 158
 159         for (u = urlstrings; u != NULL; u = u->next) {
 160                 if (!strcasecmp(u->url_key, key))
 161                         return (u->url_data);
 162         }
 163         return ("");
 164 }
 165
 166
 167 void wprintf(const char *format,...)
 168 {
 169         va_list arg_ptr;
 170         struct webcontent *wptr;
 171
 172         wptr = (struct webcontent *) malloc(sizeof(struct webcontent));
 173         wptr->next = NULL;
 174         if (wlist == NULL) {
 175                 wlist = wptr;
 176                 wlast = wptr;
 177         } else {
 178                 wlast->next = wptr;
 179                 wlast = wptr;
 180         }
 181
 182         va_start(arg_ptr, format);
 183         vsprintf(wptr->w_data, format, arg_ptr);
 184         va_end(arg_ptr);
 185 }
 186
 187 int wContentLength(void)
 188 {
 189         struct webcontent *wptr;
 190         int len = 0;
 191
 192         for (wptr = wlist; wptr != NULL; wptr = wptr->next) {
 193                 len = len + strlen(wptr->w_data);
 194         }
 195
 196         return (len);
 197 }
 198
 199 /*
 200  * wDumpContent() takes all the stuff that's been queued up using
 201  * the wprintf() and escputs() functions, and sends it out to the browser.
 202  * By queuing instead of transmitting as it's generated, we're able to
 203  * calculate a Content-length: header.
 204  *
 205  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 206  * append the main menu and closing tags, or 2 to
 207  * append the closing tags only.
 208  */
 209 void wDumpContent(int print_standard_html_footer)
 210 {
 211         struct webcontent *wptr;
 212
 213         if (fake_frames) {
 214                 wprintf("</TD></TR></TABLE></TABLE>\n");
 215                 fake_frames = 0;
 216         }
 217
 218         if (print_standard_html_footer) {
 219                 if (print_standard_html_footer != 2) {
 220                         wprintf("<BR>");
 221                 }
 222                 wprintf("</BODY></HTML>\n");
 223         }
 224         printf("Content-type: text/html\n");
 225         printf("Content-length: %d\n", wContentLength());
 226         printf("\n");
 227
 228         while (wlist != NULL) {
 229                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 230                 wptr = wlist->next;
 231                 free(wlist);
 232                 wlist = wptr;
 233         }
 234         wlast = NULL;
 235 }
 236
 237
 238 void escputs1(char *strbuf, int nbsp)
 239 {
 240         int a;
 241
 242         for (a = 0; a < strlen(strbuf); ++a) {
 243                 if (strbuf[a] == '<')
 244                         wprintf("&lt;");
 245                 else if (strbuf[a] == '>')
 246                         wprintf("&gt;");
 247                 else if (strbuf[a] == '&')
 248                         wprintf("&amp;");
 249                 else if (strbuf[a] == 34)
 250                         wprintf("&quot;");
 251                 else if (strbuf[a] == LB)
 252                         wprintf("<");
 253                 else if (strbuf[a] == RB)
 254                         wprintf(">");
 255                 else if (strbuf[a] == QU)
 256                         wprintf("\"");
 257                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 258                         wprintf("&nbsp;");
 259                 } else {
 260                         wprintf("%c", strbuf[a]);
 261                 }
 262         }
 263 }
 264
 265 void escputs(char *strbuf)
 266 {
 267         escputs1(strbuf, 0);
 268 }
 269
 270
 271
 272 char *urlesc(char *strbuf)
 273 {
 274         int a, b, c;
 275         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 276         static char outbuf[512];
 277
 278         strcpy(outbuf, "");
 279
 280         for (a = 0; a < strlen(strbuf); ++a) {
 281                 c = 0;
 282                 for (b = 0; b < strlen(ec); ++b) {
 283                         if (strbuf[a] == ec[b])
 284                                 c = 1;
 285                 }
 286                 b = strlen(outbuf);
 287                 if (c == 1)
 288                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 289                 else
 290                         sprintf(&outbuf[b], "%c", strbuf[a]);
 291         }
 292         return (outbuf);
 293 }
 294
 295 void urlescputs(char *strbuf)
 296 {
 297         wprintf("%s", urlesc(strbuf));
 298 }
 299
 300
 301
 302
 303 /*
 304  * Get a line of text from the webserver (which originally came from the
 305  * user's browser), checking for sanity etc.
 306  */
 307 char *getz(char *buf)
 308 {
 309         int e = 0;
 310
 311         bzero(buf, 256);
 312
 313         /* If fgets() fails, it's because the webserver crashed, so kill off
 314          * the session too.
 315          */
 316         if (fgets(buf, 256, stdin) == NULL) {
 317                 e = errno;
 318                 fprintf(stderr, "webcit: exit code %d (%s)\n",
 319                         e, strerror(e));
 320                 fflush(stderr);
 321                 exit(e);
 322
 323         /* Otherwise, strip out nonprintables and resume our happy day.
 324          */
 325         } else {
 326                 while ((strlen(buf) > 0) && (!isprint(buf[strlen(buf) - 1])))
 327                         buf[strlen(buf) - 1] = 0;
 328                 return buf;
 329         }
 330 }
 331
 332
 333
 334 /*
 335  * Output all that important stuff that the browser will want to see
 336  *
 337  * print_standard_html_head values:
 338  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 339  * 1 = HTTP headers plus the "fake frames" found in most windows.
 340  * 2 = HTTP headers required to terminate the session (unset cookies)
 341  * 3 = HTTP headers only.
 342  */
 343 void output_headers(int print_standard_html_head)
 344 {
 345
 346         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 347         char cookie[256];
 348
 349         printf("Server: %s\n", SERVER);
 350         printf("Connection: close\n");
 351
 352         if (print_standard_html_head > 0) {
 353                 printf("Pragma: no-cache\n");
 354                 printf("Cache-Control: no-store\n");
 355         }
 356         stuff_to_cookie(cookie, wc_session, wc_username,
 357                         wc_password, wc_roomname);
 358         if (print_standard_html_head == 2) {
 359                 printf("X-WebCit-Session: close\n");
 360                 printf("Set-cookie: webcit=%s\n", unset);
 361         } else {
 362                 printf("Set-cookie: webcit=%s\n", cookie);
 363         }
 364
 365         if (print_standard_html_head > 0) {
 366                 wprintf("<HTML><HEAD><TITLE>");
 367                 escputs(serv_info.serv_humannode);
 368                 wprintf("</TITLE></HEAD>");
 369                 if (ExpressMessages != NULL) {
 370                         wprintf("<SCRIPT language=\"javascript\">\n");
 371                         wprintf("function ExpressMessage() {\n");
 372                         wprintf(" alert(\"");
 373                         escputs(ExpressMessages);
 374                         wprintf("\")\n");
 375                         wprintf(" }\n </SCRIPT>\n");
 376                 }
 377                 wprintf("<BODY ");
 378                 if (ExpressMessages != NULL) {
 379                         wprintf("onload=\"ExpressMessage()\" ");
 380                         free(ExpressMessages);
 381                         ExpressMessages = NULL;
 382                 }
 383                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 384
 385
 386         if (print_standard_html_head == 1) {
 387                 wprintf("<TABLE border=0 width=100%>"
 388                         "<TR VALIGN=TOP><TD>");
 389
 390                 display_menubar(0);
 391
 392                 wprintf("</TD><TD VALIGN=TOP>"
 393                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 394                         "<TD>\n");
 395
 396                 embed_room_banner(NULL);
 397
 398                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 399
 400                 fake_frames = 1;
 401                 }
 402         }
 403 }
 404
 405
 406
 407 void ExpressMessageCat(char *buf) {
 408         if (ExpressMessages == NULL) {
 409                 ExpressMessages = malloc(strlen(buf) + 4);
 410                 strcpy(ExpressMessages, "");
 411         } else {
 412                 ExpressMessages = realloc(ExpressMessages,
 413                         (strlen(ExpressMessages) + strlen(buf) + 4));
 414         }
 415         strcat(ExpressMessages, buf);
 416         strcat(ExpressMessages, "\\n");
 417 }
 418
 419
 420 void check_for_express_messages()
 421 {
 422         char buf[256];
 423
 424         serv_puts("PEXP");
 425         serv_gets(buf);
 426         if (buf[0] == '1') {
 427                 while (serv_gets(buf), strcmp(buf, "000")) {
 428                         ExpressMessageCat(buf);
 429                 }
 430         }
 431 }
 432
 433
 434
 435
 436 void output_static(char *what)
 437 {
 438         char buf[256];
 439         FILE *fp;
 440         struct stat statbuf;
 441         off_t bytes;
 442
 443         sprintf(buf, "static/%s", what);
 444         fp = fopen(buf, "rb");
 445         if (fp == NULL) {
 446                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 447                 output_headers(0);
 448                 printf("Content-Type: text/plain\n");
 449                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 450                 printf("Content-length: %d\n", strlen(buf));
 451                 printf("\n");
 452                 fwrite(buf, strlen(buf), 1, stdout);
 453         } else {
 454                 printf("HTTP/1.0 200 OK\n");
 455                 output_headers(0);
 456
 457                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 458                         printf("Content-type: image/gif\n");
 459                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 460                         printf("Content-type: image/jpeg\n");
 461                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 462                         printf("Content-type: text/html\n");
 463                 else
 464                         printf("Content-type: application/octet-stream\n");
 465
 466                 fstat(fileno(fp), &statbuf);
 467                 bytes = statbuf.st_size;
 468                 printf("Content-length: %ld\n", (long) bytes);
 469                 printf("\n");
 470                 while (bytes--) {
 471                         putc(getc(fp), stdout);
 472                 }
 473                 fflush(stdout);
 474                 fclose(fp);
 475         }
 476 }
 477
 478 void output_image()
 479 {
 480         char buf[256];
 481         char xferbuf[4096];
 482         off_t bytes;
 483         off_t thisblock;
 484         off_t accomplished = 0L;
 485
 486
 487         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 488         serv_gets(buf);
 489         if (buf[0] == '2') {
 490                 bytes = extract_long(&buf[4], 0);
 491                 printf("HTTP/1.0 200 OK\n");
 492                 output_headers(0);
 493                 printf("Content-type: image/gif\n");
 494                 printf("Content-length: %ld\n", (long) bytes);
 495                 printf("\n");
 496
 497                 while (bytes > (off_t) 0) {
 498                         thisblock = (off_t) sizeof(xferbuf);
 499                         if (thisblock > bytes)
 500                                 thisblock = bytes;
 501                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 502                         serv_gets(buf);
 503                         if (buf[0] == '6')
 504                                 thisblock = extract_long(&buf[4], 0);
 505                         serv_read(xferbuf, (int) thisblock);
 506                         fwrite(xferbuf, thisblock, 1, stdout);
 507                         bytes = bytes - thisblock;
 508                         accomplished = accomplished + thisblock;
 509                 }
 510                 fflush(stdout);
 511                 serv_puts("CLOS");
 512                 serv_gets(buf);
 513         } else {
 514                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 515                 output_headers(0);
 516                 printf("Content-Type: text/plain\n");
 517                 sprintf(buf, "Error retrieving image\n");
 518                 printf("Content-length: %d\n", strlen(buf));
 519                 printf("\n");
 520                 fwrite(buf, strlen(buf), 1, stdout);
 521         }
 522
 523 }
 524
 525
 526 /*
 527  * Convenience functions to display a page containing only a string
 528  */
 529 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 530 {
 531         printf("HTTP/1.0 200 OK\n");
 532         output_headers(1);
 533         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 534         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 535         wprintf("<B>%s</B>\n", titlebarmsg);
 536         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 537         escputs(messagetext);
 538
 539         wprintf("<HR>\n");
 540         embed_main_menu();
 541         wDumpContent(1);
 542 }
 543
 544 void display_error(char *errormessage)
 545 {
 546         convenience_page("770000", "Error", errormessage);
 547 }
 548
 549 void display_success(char *successmessage)
 550 {
 551         convenience_page("007700", "OK", successmessage);
 552 }
 553
 554
 555
 556 void extract_action(char *actbuf, char *cmdbuf)
 557 {
 558         int i;
 559
 560         strcpy(actbuf, cmdbuf);
 561         if (!strncasecmp(actbuf, "GET /", 5))
 562                 strcpy(actbuf, &actbuf[5]);
 563         if (!strncasecmp(actbuf, "PUT /", 5))
 564                 strcpy(actbuf, &actbuf[5]);
 565         if (!strncasecmp(actbuf, "POST /", 6))
 566                 strcpy(actbuf, &actbuf[6]);
 567
 568         for (i = 0; i < strlen(actbuf); ++i) {
 569                 if (actbuf[i] == ' ') {
 570                         actbuf[i] = 0;
 571                         i = 0;
 572                 }
 573                 if (actbuf[i] == '/') {
 574                         actbuf[i] = 0;
 575                         i = 0;
 576                 }
 577                 if (actbuf[i] == '?') {
 578                         actbuf[i] = 0;
 579                         i = 0;
 580                 }
 581                 if (actbuf[i] == '&') {
 582                         actbuf[i] = 0;
 583                         i = 0;
 584                 }
 585         }
 586 }
 587
 588
 589 void upload_handler(char *name, char *filename, char *encoding,
 590                     void *content, char *cbtype, size_t length)
 591 {
 592
 593         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 594         fprintf(stderr, "    name = %s\n", name);
 595         fprintf(stderr, "filename = %s\n", filename);
 596         fprintf(stderr, "encoding = %s\n", encoding);
 597         fprintf(stderr, "    type = %s\n", cbtype);
 598         fprintf(stderr, "  length = %d\n", length);
 599
 600         if (strlen(name) > 0) {
 601                 upload = malloc(length);
 602                 if (upload != NULL) {
 603                         upload_length = length;
 604                         memcpy(upload, content, length);
 605                 }
 606         }
 607 }
 608
 609
 610 void session_loop(char *browser_host, char *user_agent)
 611 {
 612         char cmd[256];
 613         char action[256];
 614         char buf[256];
 615         int a, b;
 616         int ContentLength = 0;
 617         char ContentType[512];
 618         char *content;
 619
 620         /* We stuff these with the values coming from the client cookies,
 621          * so we can use them to reconnect a timed out session if we have to.
 622          */
 623         char c_host[256];
 624         char c_port[256];
 625         char c_username[256];
 626         char c_password[256];
 627         char c_roomname[256];
 628         char cookie[256];
 629
 630         strcpy(c_host, defaulthost);
 631         strcpy(c_port, defaultport);
 632         strcpy(c_username, "");
 633         strcpy(c_password, "");
 634         strcpy(c_roomname, "");
 635
 636         upload_length = 0;
 637         upload = NULL;
 638
 639         if (getz(cmd) == NULL)
 640                 return;
 641         extract_action(action, cmd);
 642
 643         do {
 644                 if (getz(buf) == NULL)
 645                         return;
 646
 647                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 648                         strcpy(cookie, &buf[15]);
 649                         cookie_to_stuff(cookie, NULL,
 650                                       c_username, c_password, c_roomname);
 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
 954         while (1) {
 955                 session_loop(argv[4], browser);
 956         }
 957 }