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