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("<CENTER><FONT SIZE=-1>"
 215                         "<A HREF=\"/ungoto\">"
 216                         "<IMG SRC=\"/static/back.gif\" BORDER=0>"
 217                         "Ungoto</A>&nbsp;&nbsp;&nbsp;");
 218                 wprintf("<A HREF=\"#TheTop\">"
 219                         "<IMG SRC=\"/static/up.gif\" BORDER=0>"
 220                         "Top of page</A>&nbsp;&nbsp;&nbsp;");
 221                 wprintf("<A HREF=\"/gotonext\">"
 222                         "Goto next room"
 223                         "<IMG SRC=\"/static/forward.gif\" BORDER=0></A>"
 224                         "</FONT>\n"
 225                         "</TD></TR></TABLE></TABLE>\n");
 226                 fake_frames = 0;
 227         }
 228
 229         if (print_standard_html_footer) {
 230                 if (print_standard_html_footer != 2) {
 231                         wprintf("<BR>");
 232                 }
 233                 wprintf("</BODY></HTML>\n");
 234         }
 235         printf("Content-type: text/html\n");
 236         printf("Content-length: %d\n", wContentLength());
 237         printf("\n");
 238
 239         while (wlist != NULL) {
 240                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 241                 wptr = wlist->next;
 242                 free(wlist);
 243                 wlist = wptr;
 244         }
 245         wlast = NULL;
 246 }
 247
 248
 249 void escputs1(char *strbuf, int nbsp)
 250 {
 251         int a;
 252
 253         for (a = 0; a < strlen(strbuf); ++a) {
 254                 if (strbuf[a] == '<')
 255                         wprintf("&lt;");
 256                 else if (strbuf[a] == '>')
 257                         wprintf("&gt;");
 258                 else if (strbuf[a] == '&')
 259                         wprintf("&amp;");
 260                 else if (strbuf[a] == 34)
 261                         wprintf("&quot;");
 262                 else if (strbuf[a] == LB)
 263                         wprintf("<");
 264                 else if (strbuf[a] == RB)
 265                         wprintf(">");
 266                 else if (strbuf[a] == QU)
 267                         wprintf("\"");
 268                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 269                         wprintf("&nbsp;");
 270                 } else {
 271                         wprintf("%c", strbuf[a]);
 272                 }
 273         }
 274 }
 275
 276 void escputs(char *strbuf)
 277 {
 278         escputs1(strbuf, 0);
 279 }
 280
 281
 282
 283 char *urlesc(char *strbuf)
 284 {
 285         int a, b, c;
 286         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 287         static char outbuf[512];
 288
 289         strcpy(outbuf, "");
 290
 291         for (a = 0; a < strlen(strbuf); ++a) {
 292                 c = 0;
 293                 for (b = 0; b < strlen(ec); ++b) {
 294                         if (strbuf[a] == ec[b])
 295                                 c = 1;
 296                 }
 297                 b = strlen(outbuf);
 298                 if (c == 1)
 299                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 300                 else
 301                         sprintf(&outbuf[b], "%c", strbuf[a]);
 302         }
 303         return (outbuf);
 304 }
 305
 306 void urlescputs(char *strbuf)
 307 {
 308         wprintf("%s", urlesc(strbuf));
 309 }
 310
 311
 312
 313
 314 /*
 315  * Get a line of text from the webserver (which originally came from the
 316  * user's browser), checking for sanity etc.
 317  */
 318 char *getz(char *buf)
 319 {
 320         int e = 0;
 321
 322         bzero(buf, 256);
 323
 324         /* If fgets() fails, it's because the webserver crashed, so kill off
 325          * the session too.
 326          */
 327         if (fgets(buf, 256, stdin) == NULL) {
 328                 e = errno;
 329                 fprintf(stderr, "webcit: exit code %d (%s)\n",
 330                         e, strerror(e));
 331                 fflush(stderr);
 332                 exit(e);
 333
 334         /* Otherwise, strip out nonprintables and resume our happy day.
 335          */
 336         } else {
 337                 while ((strlen(buf) > 0) && (!isprint(buf[strlen(buf) - 1])))
 338                         buf[strlen(buf) - 1] = 0;
 339                 return buf;
 340         }
 341 }
 342
 343
 344
 345 /*
 346  * Output all that important stuff that the browser will want to see
 347  *
 348  * print_standard_html_head values:
 349  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 350  * 1 = HTTP headers plus the "fake frames" found in most windows.
 351  * 2 = HTTP headers required to terminate the session (unset cookies)
 352  * 3 = HTTP headers only.
 353  */
 354 void output_headers(int print_standard_html_head)
 355 {
 356
 357         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 358         char cookie[256];
 359
 360         printf("Server: %s\n", SERVER);
 361         printf("Connection: close\n");
 362
 363         if (print_standard_html_head > 0) {
 364                 printf("Pragma: no-cache\n");
 365                 printf("Cache-Control: no-store\n");
 366         }
 367         stuff_to_cookie(cookie, wc_session, wc_username,
 368                         wc_password, wc_roomname);
 369         if (print_standard_html_head == 2) {
 370                 printf("X-WebCit-Session: close\n");
 371                 printf("Set-cookie: webcit=%s\n", unset);
 372         } else {
 373                 printf("Set-cookie: webcit=%s\n", cookie);
 374         }
 375
 376         if (print_standard_html_head > 0) {
 377                 wprintf("<HTML><HEAD><TITLE>");
 378                 escputs(serv_info.serv_humannode);
 379                 wprintf("</TITLE></HEAD>");
 380                 if (ExpressMessages != NULL) {
 381                         wprintf("<SCRIPT language=\"javascript\">\n");
 382                         wprintf("function ExpressMessage() {\n");
 383                         wprintf(" alert(\"");
 384                         escputs(ExpressMessages);
 385                         wprintf("\")\n");
 386                         wprintf(" }\n </SCRIPT>\n");
 387                 }
 388                 wprintf("<BODY ");
 389                 if (ExpressMessages != NULL) {
 390                         wprintf("onload=\"ExpressMessage()\" ");
 391                         free(ExpressMessages);
 392                         ExpressMessages = NULL;
 393                 }
 394                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 395
 396
 397         if (print_standard_html_head == 1) {
 398                 wprintf("<A NAME=\"TheTop\"></A>"
 399                         "<TABLE border=0 width=100%>"
 400                         "<TR VALIGN=TOP><TD>");
 401
 402                 display_menubar(0);
 403
 404                 wprintf("</TD><TD VALIGN=TOP>"
 405                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 406                         "<TD>\n");
 407
 408                 embed_room_banner(NULL);
 409
 410                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 411
 412                 fake_frames = 1;
 413                 }
 414         }
 415 }
 416
 417
 418
 419 void ExpressMessageCat(char *buf) {
 420         if (ExpressMessages == NULL) {
 421                 ExpressMessages = malloc(strlen(buf) + 4);
 422                 strcpy(ExpressMessages, "");
 423         } else {
 424                 ExpressMessages = realloc(ExpressMessages,
 425                         (strlen(ExpressMessages) + strlen(buf) + 4));
 426         }
 427         strcat(ExpressMessages, buf);
 428         strcat(ExpressMessages, "\\n");
 429 }
 430
 431
 432 void check_for_express_messages()
 433 {
 434         char buf[256];
 435
 436         serv_puts("PEXP");
 437         serv_gets(buf);
 438         if (buf[0] == '1') {
 439                 while (serv_gets(buf), strcmp(buf, "000")) {
 440                         ExpressMessageCat(buf);
 441                 }
 442         }
 443 }
 444
 445
 446
 447
 448 void output_static(char *what)
 449 {
 450         char buf[256];
 451         FILE *fp;
 452         struct stat statbuf;
 453         off_t bytes;
 454
 455         sprintf(buf, "static/%s", what);
 456         fp = fopen(buf, "rb");
 457         if (fp == NULL) {
 458                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 459                 output_headers(0);
 460                 printf("Content-Type: text/plain\n");
 461                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 462                 printf("Content-length: %d\n", strlen(buf));
 463                 printf("\n");
 464                 fwrite(buf, strlen(buf), 1, stdout);
 465         } else {
 466                 printf("HTTP/1.0 200 OK\n");
 467                 output_headers(0);
 468
 469                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 470                         printf("Content-type: image/gif\n");
 471                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 472                         printf("Content-type: text/plain\n");
 473                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 474                         printf("Content-type: image/jpeg\n");
 475                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 476                         printf("Content-type: text/html\n");
 477                 else
 478                         printf("Content-type: application/octet-stream\n");
 479
 480                 fstat(fileno(fp), &statbuf);
 481                 bytes = statbuf.st_size;
 482                 printf("Content-length: %ld\n", (long) bytes);
 483                 printf("\n");
 484                 while (bytes--) {
 485                         putc(getc(fp), stdout);
 486                 }
 487                 fflush(stdout);
 488                 fclose(fp);
 489         }
 490 }
 491
 492 void output_image()
 493 {
 494         char buf[256];
 495         char xferbuf[4096];
 496         off_t bytes;
 497         off_t thisblock;
 498         off_t accomplished = 0L;
 499
 500
 501         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 502         serv_gets(buf);
 503         if (buf[0] == '2') {
 504                 bytes = extract_long(&buf[4], 0);
 505                 printf("HTTP/1.0 200 OK\n");
 506                 output_headers(0);
 507                 printf("Content-type: image/gif\n");
 508                 printf("Content-length: %ld\n", (long) bytes);
 509                 printf("\n");
 510
 511                 while (bytes > (off_t) 0) {
 512                         thisblock = (off_t) sizeof(xferbuf);
 513                         if (thisblock > bytes)
 514                                 thisblock = bytes;
 515                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 516                         serv_gets(buf);
 517                         if (buf[0] == '6')
 518                                 thisblock = extract_long(&buf[4], 0);
 519                         serv_read(xferbuf, (int) thisblock);
 520                         fwrite(xferbuf, thisblock, 1, stdout);
 521                         bytes = bytes - thisblock;
 522                         accomplished = accomplished + thisblock;
 523                 }
 524                 fflush(stdout);
 525                 serv_puts("CLOS");
 526                 serv_gets(buf);
 527         } else {
 528                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 529                 output_headers(0);
 530                 printf("Content-Type: text/plain\n");
 531                 sprintf(buf, "Error retrieving image\n");
 532                 printf("Content-length: %d\n", strlen(buf));
 533                 printf("\n");
 534                 fwrite(buf, strlen(buf), 1, stdout);
 535         }
 536
 537 }
 538
 539
 540 /*
 541  * Convenience functions to display a page containing only a string
 542  */
 543 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 544 {
 545         printf("HTTP/1.0 200 OK\n");
 546         output_headers(1);
 547         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 548         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 549         wprintf("<B>%s</B>\n", titlebarmsg);
 550         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 551         escputs(messagetext);
 552
 553         wprintf("<HR>\n");
 554         embed_main_menu();
 555         wDumpContent(1);
 556 }
 557
 558 void display_error(char *errormessage)
 559 {
 560         convenience_page("770000", "Error", errormessage);
 561 }
 562
 563 void display_success(char *successmessage)
 564 {
 565         convenience_page("007700", "OK", successmessage);
 566 }
 567
 568
 569
 570 void extract_action(char *actbuf, char *cmdbuf)
 571 {
 572         int i;
 573
 574         strcpy(actbuf, cmdbuf);
 575         if (!strncasecmp(actbuf, "GET /", 5))
 576                 strcpy(actbuf, &actbuf[5]);
 577         if (!strncasecmp(actbuf, "PUT /", 5))
 578                 strcpy(actbuf, &actbuf[5]);
 579         if (!strncasecmp(actbuf, "POST /", 6))
 580                 strcpy(actbuf, &actbuf[6]);
 581
 582         for (i = 0; i < strlen(actbuf); ++i) {
 583                 if (actbuf[i] == ' ') {
 584                         actbuf[i] = 0;
 585                         i = 0;
 586                 }
 587                 if (actbuf[i] == '/') {
 588                         actbuf[i] = 0;
 589                         i = 0;
 590                 }
 591                 if (actbuf[i] == '?') {
 592                         actbuf[i] = 0;
 593                         i = 0;
 594                 }
 595                 if (actbuf[i] == '&') {
 596                         actbuf[i] = 0;
 597                         i = 0;
 598                 }
 599         }
 600 }
 601
 602
 603 void upload_handler(char *name, char *filename, char *encoding,
 604                     void *content, char *cbtype, size_t length)
 605 {
 606
 607         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 608         fprintf(stderr, "    name = %s\n", name);
 609         fprintf(stderr, "filename = %s\n", filename);
 610         fprintf(stderr, "encoding = %s\n", encoding);
 611         fprintf(stderr, "    type = %s\n", cbtype);
 612         fprintf(stderr, "  length = %d\n", length);
 613
 614         if (strlen(name) > 0) {
 615                 upload = malloc(length);
 616                 if (upload != NULL) {
 617                         upload_length = length;
 618                         memcpy(upload, content, length);
 619                 }
 620         }
 621 }
 622
 623
 624 void session_loop(char *browser_host, char *user_agent)
 625 {
 626         char cmd[256];
 627         char action[256];
 628         char buf[256];
 629         int a, b;
 630         int ContentLength = 0;
 631         char ContentType[512];
 632         char *content;
 633
 634         /* We stuff these with the values coming from the client cookies,
 635          * so we can use them to reconnect a timed out session if we have to.
 636          */
 637         char c_host[256];
 638         char c_port[256];
 639         char c_username[256];
 640         char c_password[256];
 641         char c_roomname[256];
 642         char cookie[256];
 643
 644         strcpy(c_host, defaulthost);
 645         strcpy(c_port, defaultport);
 646         strcpy(c_username, "");
 647         strcpy(c_password, "");
 648         strcpy(c_roomname, "");
 649
 650         upload_length = 0;
 651         upload = NULL;
 652
 653         if (getz(cmd) == NULL)
 654                 return;
 655         extract_action(action, cmd);
 656
 657         do {
 658                 if (getz(buf) == NULL)
 659                         return;
 660
 661                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 662                         strcpy(cookie, &buf[15]);
 663                         cookie_to_stuff(cookie, NULL,
 664                                       c_username, c_password, c_roomname);
 665                 }
 666                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 667                         ContentLength = atoi(&buf[16]);
 668                 }
 669                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 670                         strcpy(ContentType, &buf[14]);
 671                 }
 672         } while (strlen(buf) > 0);
 673
 674         ++TransactionCount;
 675
 676         if (ContentLength > 0) {
 677                 content = malloc(ContentLength + 1);
 678                 fread(content, ContentLength, 1, stdin);
 679
 680                 content[ContentLength] = 0;
 681
 682                 if (!strncasecmp(ContentType,
 683                               "application/x-www-form-urlencoded", 33)) {
 684                         addurls(content);
 685                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 686                         mime_parser(content, ContentLength, ContentType,
 687                                     *upload_handler);
 688                 }
 689         } else {
 690                 content = NULL;
 691         }
 692
 693         /* If there are variables in the URL, we must grab them now */
 694         for (a = 0; a < strlen(cmd); ++a)
 695                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 696                         for (b = a; b < strlen(cmd); ++b)
 697                                 if (isspace(cmd[b]))
 698                                         cmd[b] = 0;
 699                         addurls(&cmd[a + 1]);
 700                         cmd[a] = 0;
 701                 }
 702         /*
 703          * If we're not connected to a Citadel server, try to hook up the
 704          * connection now.  Preference is given to the host and port specified
 705          * by browser cookies, if cookies have been supplied.
 706          */
 707         if (!connected) {
 708                 if (strlen(bstr("host")) > 0)
 709                         strcpy(c_host, bstr("host"));
 710                 if (strlen(bstr("port")) > 0)
 711                         strcpy(c_port, bstr("port"));
 712                 serv_sock = connectsock(c_host, c_port, "tcp");
 713                 if (serv_sock < 0) {
 714                         do_logout();
 715                 }
 716
 717                 connected = 1;
 718                 serv_gets(buf); /* get the server welcome message */
 719                 get_serv_info(browser_host, user_agent);
 720         }
 721         check_for_express_messages();
 722
 723         /*
 724          * If we're not logged in, but we have username and password cookies
 725          * supplied by the browser, try using them to log in.
 726          */
 727         if ((!logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 728                 serv_printf("USER %s", c_username);
 729                 serv_gets(buf);
 730                 if (buf[0] == '3') {
 731                         serv_printf("PASS %s", c_password);
 732                         serv_gets(buf);
 733                         if (buf[0] == '2') {
 734                                 become_logged_in(c_username, c_password, buf);
 735                         }
 736                 }
 737         }
 738         /*
 739          * If we don't have a current room, but a cookie specifying the
 740          * current room is supplied, make an effort to go there.
 741          */
 742         if ((strlen(wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 743                 serv_printf("GOTO %s", c_roomname);
 744                 serv_gets(buf);
 745                 if (buf[0] == '2') {
 746                         strcpy(wc_roomname, c_roomname);
 747                 }
 748         }
 749         if (!strcasecmp(action, "static")) {
 750                 strcpy(buf, &cmd[12]);
 751                 for (a = 0; a < strlen(buf); ++a)
 752                         if (isspace(buf[a]))
 753                                 buf[a] = 0;
 754                 output_static(buf);
 755         } else if (!strcasecmp(action, "image")) {
 756                 output_image();
 757         } else if ((!logged_in) && (!strcasecmp(action, "login"))) {
 758                 do_login();
 759         } else if (!logged_in) {
 760                 display_login(NULL);
 761         }
 762         /* Various commands... */
 763
 764         else if (!strcasecmp(action, "do_welcome")) {
 765                 do_welcome();
 766         } else if (!strcasecmp(action, "display_main_menu")) {
 767                 display_main_menu();
 768         } else if (!strcasecmp(action, "advanced")) {
 769                 display_advanced_menu();
 770         } else if (!strcasecmp(action, "whobbs")) {
 771                 whobbs();
 772         } else if (!strcasecmp(action, "knrooms")) {
 773                 list_all_rooms_by_floor();
 774         } else if (!strcasecmp(action, "gotonext")) {
 775                 slrp_highest();
 776                 gotonext();
 777         } else if (!strcasecmp(action, "skip")) {
 778                 gotonext();
 779         } else if (!strcasecmp(action, "ungoto")) {
 780                 ungoto();
 781         } else if (!strcasecmp(action, "dotgoto")) {
 782                 slrp_highest();
 783                 smart_goto(bstr("room"));
 784         } else if (!strcasecmp(action, "termquit")) {
 785                 do_logout();
 786         } else if (!strcasecmp(action, "readnew")) {
 787                 readloop("readnew");
 788         } else if (!strcasecmp(action, "readold")) {
 789                 readloop("readold");
 790         } else if (!strcasecmp(action, "readfwd")) {
 791                 readloop("readfwd");
 792         } else if (!strcasecmp(action, "display_enter")) {
 793                 display_enter();
 794         } else if (!strcasecmp(action, "post")) {
 795                 post_message();
 796         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 797                 confirm_delete_msg();
 798         } else if (!strcasecmp(action, "delete_msg")) {
 799                 delete_msg();
 800         } else if (!strcasecmp(action, "confirm_move_msg")) {
 801                 confirm_move_msg();
 802         } else if (!strcasecmp(action, "move_msg")) {
 803                 move_msg();
 804         } else if (!strcasecmp(action, "userlist")) {
 805                 userlist();
 806         } else if (!strcasecmp(action, "showuser")) {
 807                 showuser();
 808         } else if (!strcasecmp(action, "display_page")) {
 809                 display_page();
 810         } else if (!strcasecmp(action, "page_user")) {
 811                 page_user();
 812         } else if (!strcasecmp(action, "chat")) {
 813                 do_chat();
 814         } else if (!strcasecmp(action, "display_private")) {
 815                 display_private("", 0);
 816         } else if (!strcasecmp(action, "goto_private")) {
 817                 goto_private();
 818         } else if (!strcasecmp(action, "zapped_list")) {
 819                 zapped_list();
 820         } else if (!strcasecmp(action, "display_zap")) {
 821                 display_zap();
 822         } else if (!strcasecmp(action, "zap")) {
 823                 zap();
 824         } else if (!strcasecmp(action, "display_entroom")) {
 825                 display_entroom();
 826         } else if (!strcasecmp(action, "entroom")) {
 827                 entroom();
 828         } else if (!strcasecmp(action, "display_editroom")) {
 829                 display_editroom();
 830         } else if (!strcasecmp(action, "editroom")) {
 831                 editroom();
 832         } else if (!strcasecmp(action, "display_editinfo")) {
 833                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 834         } else if (!strcasecmp(action, "editinfo")) {
 835                 save_edit("Room info", "EINF 1", 1);
 836         } else if (!strcasecmp(action, "display_editbio")) {
 837                 sprintf(buf, "RBIO %s", wc_username);
 838                 display_edit("Your bio", "NOOP", buf, "editbio");
 839         } else if (!strcasecmp(action, "editbio")) {
 840                 save_edit("Your bio", "EBIO", 0);
 841         } else if (!strcasecmp(action, "confirm_delete_room")) {
 842                 confirm_delete_room();
 843         } else if (!strcasecmp(action, "delete_room")) {
 844                 delete_room();
 845         } else if (!strcasecmp(action, "validate")) {
 846                 validate();
 847         } else if (!strcasecmp(action, "display_editpic")) {
 848                 display_graphics_upload("your photo",
 849                                         "UIMG 0|_userpic_",
 850                                         "/editpic");
 851         } else if (!strcasecmp(action, "editpic")) {
 852                 do_graphics_upload("UIMG 1|_userpic_");
 853         } else if (!strcasecmp(action, "display_editroompic")) {
 854                 display_graphics_upload("the graphic for this room",
 855                                         "UIMG 0|_roompic_",
 856                                         "/editroompic");
 857         } else if (!strcasecmp(action, "editroompic")) {
 858                 do_graphics_upload("UIMG 1|_roompic_");
 859         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 860                 select_floor_to_edit_pic();
 861         } else if (!strcasecmp(action, "display_editfloorpic")) {
 862                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 863                         bstr("which_floor"));
 864                 display_graphics_upload("the graphic for this floor",
 865                                         buf,
 866                                         "/editfloorpic");
 867         } else if (!strcasecmp(action, "editfloorpic")) {
 868                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 869                         bstr("which_floor"));
 870                 do_graphics_upload(buf);
 871         } else if (!strcasecmp(action, "display_reg")) {
 872                 display_reg(0);
 873         } else if (!strcasecmp(action, "register")) {
 874                 register_user();
 875         } else if (!strcasecmp(action, "display_changepw")) {
 876                 display_changepw();
 877         } else if (!strcasecmp(action, "changepw")) {
 878                 changepw();
 879         } else if (!strcasecmp(action, "display_edit_node")) {
 880                 display_edit_node();
 881         } else if (!strcasecmp(action, "display_netconf")) {
 882                 display_netconf();
 883         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 884                 display_confirm_unshare();
 885         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 886                 display_confirm_delete_node();
 887         } else if (!strcasecmp(action, "delete_node")) {
 888                 delete_node();
 889         } else if (!strcasecmp(action, "unshare")) {
 890                 unshare();
 891         } else if (!strcasecmp(action, "display_add_node")) {
 892                 display_add_node();
 893         } else if (!strcasecmp(action, "add_node")) {
 894                 add_node();
 895         } else if (!strcasecmp(action, "display_share")) {
 896                 display_share();
 897         } else if (!strcasecmp(action, "share")) {
 898                 share();
 899         } else if (!strcasecmp(action, "terminate_session")) {
 900                 slrp_highest();
 901                 terminate_session();
 902         } else if (!strcasecmp(action, "edit_me")) {
 903                 edit_me();
 904         } else if (!strcasecmp(action, "display_siteconfig")) {
 905                 display_siteconfig();
 906         } else if (!strcasecmp(action, "siteconfig")) {
 907                 siteconfig();
 908         } else if (!strcasecmp(action, "display_generic")) {
 909                 display_generic();
 910         } else if (!strcasecmp(action, "do_generic")) {
 911                 do_generic();
 912         } else if (!strcasecmp(action, "display_menubar")) {
 913                 display_menubar(1);
 914         } else if (!strcasecmp(action, "diagnostics")) {
 915                 printf("HTTP/1.0 200 OK\n");
 916                 output_headers(1);
 917
 918                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 919                 wprintf("You're in session %d<HR>\n", wc_session);
 920                 wprintf("Command: <BR><PRE>\n");
 921                 escputs(cmd);
 922                 wprintf("</PRE><HR>\n");
 923                 wprintf("Variables: <BR><PRE>\n");
 924                 dump_vars();
 925                 wprintf("</PRE><HR>\n");
 926                 wDumpContent(1);
 927         }
 928         /* When all else fais, display the main menu. */
 929         else {
 930                 display_main_menu();
 931         }
 932
 933         fflush(stdout);
 934         if (content != NULL) {
 935                 free(content);
 936                 content = NULL;
 937         }
 938         free_urls();
 939         if (upload_length > 0) {
 940                 free(upload);
 941                 upload_length = 0;
 942         }
 943 }
 944
 945 int main(int argc, char *argv[])
 946 {
 947
 948         char browser[256];
 949         int bd;
 950
 951         if (argc != 6) {
 952                 fprintf(stderr,
 953                         "webcit: usage error (argc must be 6, not %d)\n",
 954                         argc);
 955                 return 1;
 956         }
 957
 958         wc_session = atoi(argv[1]);
 959         defaulthost = argv[2];
 960         defaultport = argv[3];
 961
 962         strcpy(wc_username, "");
 963         strcpy(wc_password, "");
 964         strcpy(wc_roomname, "");
 965
 966         /* Clear out serv_info and temporarily set the value of serv_humannode
 967          * to a default value, because it'll be used in HTML page titles
 968          */
 969         memset(&serv_info, 0, sizeof(serv_info));
 970         strcpy(serv_info.serv_humannode, "WebCit");
 971
 972         strcpy(browser, argv[5]);
 973         bd = browser_braindamage_check(browser);
 974
 975         while (1) {
 976                 session_loop(argv[4], browser);
 977         }
 978 }