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/bleft.gif\" BORDER=0>"
 217                         "Ungoto</A>&nbsp;&nbsp;&nbsp;");
 218                 wprintf("<A HREF=\"#TheTop\">"
 219                         "<IMG SRC=\"/static/bup.gif\" BORDER=0>"
 220                         "Top of page</A>&nbsp;&nbsp;&nbsp;");
 221                 wprintf("<A HREF=\"/display_enter\">"
 222                         "<IMG SRC=\"/static/enter.gif\" BORDER=0>"
 223                         "Enter a message</A>&nbsp;&nbsp;&nbsp;");
 224                 wprintf("<A HREF=\"/gotonext\">"
 225                         "Goto next room"
 226                         "<IMG SRC=\"/static/bright.gif\" BORDER=0></A>"
 227                         "</FONT>\n"
 228                         "</TD></TR></TABLE></TABLE>\n");
 229                 fake_frames = 0;
 230         }
 231
 232         if (print_standard_html_footer) {
 233                 if (print_standard_html_footer != 2) {
 234                         wprintf("<BR>");
 235                 }
 236                 wprintf("</BODY></HTML>\n");
 237         }
 238         printf("Content-type: text/html\n");
 239         printf("Content-length: %d\n", wContentLength());
 240         printf("\n");
 241
 242         while (wlist != NULL) {
 243                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 244                 wptr = wlist->next;
 245                 free(wlist);
 246                 wlist = wptr;
 247         }
 248         wlast = NULL;
 249 }
 250
 251
 252 void escputs1(char *strbuf, int nbsp)
 253 {
 254         int a;
 255
 256         for (a = 0; a < strlen(strbuf); ++a) {
 257                 if (strbuf[a] == '<')
 258                         wprintf("&lt;");
 259                 else if (strbuf[a] == '>')
 260                         wprintf("&gt;");
 261                 else if (strbuf[a] == '&')
 262                         wprintf("&amp;");
 263                 else if (strbuf[a] == '\"')
 264                         wprintf("&quot;");
 265                 else if (strbuf[a] == '\'')
 266                         wprintf("&#39;");
 267                 else if (strbuf[a] == LB)
 268                         wprintf("<");
 269                 else if (strbuf[a] == RB)
 270                         wprintf(">");
 271                 else if (strbuf[a] == QU)
 272                         wprintf("\"");
 273                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 274                         wprintf("&nbsp;");
 275                 } else {
 276                         wprintf("%c", strbuf[a]);
 277                 }
 278         }
 279 }
 280
 281 void escputs(char *strbuf)
 282 {
 283         escputs1(strbuf, 0);
 284 }
 285
 286
 287
 288 char *urlesc(char *strbuf)
 289 {
 290         int a, b, c;
 291         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 292         static char outbuf[512];
 293
 294         strcpy(outbuf, "");
 295
 296         for (a = 0; a < strlen(strbuf); ++a) {
 297                 c = 0;
 298                 for (b = 0; b < strlen(ec); ++b) {
 299                         if (strbuf[a] == ec[b])
 300                                 c = 1;
 301                 }
 302                 b = strlen(outbuf);
 303                 if (c == 1)
 304                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 305                 else
 306                         sprintf(&outbuf[b], "%c", strbuf[a]);
 307         }
 308         return (outbuf);
 309 }
 310
 311 void urlescputs(char *strbuf)
 312 {
 313         wprintf("%s", urlesc(strbuf));
 314 }
 315
 316
 317
 318
 319 /*
 320  * Get a line of text from the webserver (which originally came from the
 321  * user's browser), checking for sanity etc.
 322  */
 323 char *getz(char *buf)
 324 {
 325         int e = 0;
 326
 327         bzero(buf, 256);
 328
 329         /* If fgets() fails, it's because the webserver crashed, so kill off
 330          * the session too.
 331          */
 332         if (fgets(buf, 256, stdin) == NULL) {
 333                 e = errno;
 334                 fprintf(stderr, "webcit: exit code %d (%s)\n",
 335                         e, strerror(e));
 336                 fflush(stderr);
 337                 exit(e);
 338
 339         /* Otherwise, strip out nonprintables and resume our happy day.
 340          */
 341         } else {
 342                 while ((strlen(buf) > 0) && (!isprint(buf[strlen(buf) - 1])))
 343                         buf[strlen(buf) - 1] = 0;
 344                 return buf;
 345         }
 346 }
 347
 348
 349
 350 /*
 351  * Output all that important stuff that the browser will want to see
 352  *
 353  * print_standard_html_head values:
 354  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 355  * 1 = HTTP headers plus the "fake frames" found in most windows.
 356  * 2 = HTTP headers required to terminate the session (unset cookies)
 357  * 3 = HTTP headers only.
 358  */
 359 void output_headers(int print_standard_html_head)
 360 {
 361
 362         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 363         char cookie[256];
 364
 365         printf("Server: %s\n", SERVER);
 366         printf("Connection: close\n");
 367
 368         if (print_standard_html_head > 0) {
 369                 printf("Pragma: no-cache\n");
 370                 printf("Cache-Control: no-store\n");
 371         }
 372         stuff_to_cookie(cookie, wc_session, wc_username,
 373                         wc_password, wc_roomname);
 374         if (print_standard_html_head == 2) {
 375                 printf("X-WebCit-Session: close\n");
 376                 printf("Set-cookie: webcit=%s\n", unset);
 377         } else {
 378                 printf("Set-cookie: webcit=%s\n", cookie);
 379         }
 380
 381         if (print_standard_html_head > 0) {
 382                 wprintf("<HTML><HEAD><TITLE>");
 383                 escputs(serv_info.serv_humannode);
 384                 wprintf("</TITLE></HEAD>");
 385                 if (ExpressMessages != NULL) {
 386                         wprintf("<SCRIPT language=\"javascript\">\n");
 387                         wprintf("function ExpressMessage() {\n");
 388                         wprintf(" alert(\"");
 389                         escputs(ExpressMessages);
 390                         wprintf("\")\n");
 391                         wprintf(" }\n </SCRIPT>\n");
 392                 }
 393                 wprintf("<BODY ");
 394                 if (ExpressMessages != NULL) {
 395                         wprintf("onload=\"ExpressMessage()\" ");
 396                         free(ExpressMessages);
 397                         ExpressMessages = NULL;
 398                 }
 399                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 400
 401
 402         if (print_standard_html_head == 1) {
 403                 wprintf("<A NAME=\"TheTop\"></A>"
 404                         "<TABLE border=0 width=100%>"
 405                         "<TR VALIGN=TOP><TD>");
 406
 407                 display_menubar(0);
 408
 409                 wprintf("</TD><TD VALIGN=TOP>"
 410                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 411                         "<TD>\n");
 412
 413                 embed_room_banner(NULL);
 414
 415                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 416
 417                 fake_frames = 1;
 418                 }
 419         }
 420 }
 421
 422
 423
 424 void ExpressMessageCat(char *buf) {
 425         if (ExpressMessages == NULL) {
 426                 ExpressMessages = malloc(strlen(buf) + 4);
 427                 strcpy(ExpressMessages, "");
 428         } else {
 429                 ExpressMessages = realloc(ExpressMessages,
 430                         (strlen(ExpressMessages) + strlen(buf) + 4));
 431         }
 432         strcat(ExpressMessages, buf);
 433         strcat(ExpressMessages, "\\n");
 434 }
 435
 436
 437 void check_for_express_messages()
 438 {
 439         char buf[256];
 440
 441         serv_puts("PEXP");
 442         serv_gets(buf);
 443         if (buf[0] == '1') {
 444                 while (serv_gets(buf), strcmp(buf, "000")) {
 445                         ExpressMessageCat(buf);
 446                 }
 447         }
 448 }
 449
 450
 451
 452
 453 void output_static(char *what)
 454 {
 455         char buf[256];
 456         FILE *fp;
 457         struct stat statbuf;
 458         off_t bytes;
 459
 460         sprintf(buf, "static/%s", what);
 461         fp = fopen(buf, "rb");
 462         if (fp == NULL) {
 463                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 464                 output_headers(0);
 465                 printf("Content-Type: text/plain\n");
 466                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 467                 printf("Content-length: %d\n", strlen(buf));
 468                 printf("\n");
 469                 fwrite(buf, strlen(buf), 1, stdout);
 470         } else {
 471                 printf("HTTP/1.0 200 OK\n");
 472                 output_headers(0);
 473
 474                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 475                         printf("Content-type: image/gif\n");
 476                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 477                         printf("Content-type: text/plain\n");
 478                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 479                         printf("Content-type: image/jpeg\n");
 480                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 481                         printf("Content-type: text/html\n");
 482                 else
 483                         printf("Content-type: application/octet-stream\n");
 484
 485                 fstat(fileno(fp), &statbuf);
 486                 bytes = statbuf.st_size;
 487                 printf("Content-length: %ld\n", (long) bytes);
 488                 printf("\n");
 489                 while (bytes--) {
 490                         putc(getc(fp), stdout);
 491                 }
 492                 fflush(stdout);
 493                 fclose(fp);
 494         }
 495 }
 496
 497 void output_image()
 498 {
 499         char buf[256];
 500         char xferbuf[4096];
 501         off_t bytes;
 502         off_t thisblock;
 503         off_t accomplished = 0L;
 504
 505
 506         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 507         serv_gets(buf);
 508         if (buf[0] == '2') {
 509                 bytes = extract_long(&buf[4], 0);
 510                 printf("HTTP/1.0 200 OK\n");
 511                 output_headers(0);
 512                 printf("Content-type: image/gif\n");
 513                 printf("Content-length: %ld\n", (long) bytes);
 514                 printf("\n");
 515
 516                 while (bytes > (off_t) 0) {
 517                         thisblock = (off_t) sizeof(xferbuf);
 518                         if (thisblock > bytes)
 519                                 thisblock = bytes;
 520                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 521                         serv_gets(buf);
 522                         if (buf[0] == '6')
 523                                 thisblock = extract_long(&buf[4], 0);
 524                         serv_read(xferbuf, (int) thisblock);
 525                         fwrite(xferbuf, thisblock, 1, stdout);
 526                         bytes = bytes - thisblock;
 527                         accomplished = accomplished + thisblock;
 528                 }
 529                 fflush(stdout);
 530                 serv_puts("CLOS");
 531                 serv_gets(buf);
 532         } else {
 533                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 534                 output_headers(0);
 535                 printf("Content-Type: text/plain\n");
 536                 sprintf(buf, "Error retrieving image\n");
 537                 printf("Content-length: %d\n", strlen(buf));
 538                 printf("\n");
 539                 fwrite(buf, strlen(buf), 1, stdout);
 540         }
 541
 542 }
 543
 544
 545 /*
 546  * Convenience functions to display a page containing only a string
 547  */
 548 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 549 {
 550         printf("HTTP/1.0 200 OK\n");
 551         output_headers(1);
 552         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 553         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 554         wprintf("<B>%s</B>\n", titlebarmsg);
 555         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 556         escputs(messagetext);
 557
 558         wprintf("<HR>\n");
 559         embed_main_menu();
 560         wDumpContent(1);
 561 }
 562
 563 void display_error(char *errormessage)
 564 {
 565         convenience_page("770000", "Error", errormessage);
 566 }
 567
 568 void display_success(char *successmessage)
 569 {
 570         convenience_page("007700", "OK", successmessage);
 571 }
 572
 573
 574
 575 void extract_action(char *actbuf, char *cmdbuf)
 576 {
 577         int i;
 578
 579         strcpy(actbuf, cmdbuf);
 580         if (!strncasecmp(actbuf, "GET /", 5))
 581                 strcpy(actbuf, &actbuf[5]);
 582         if (!strncasecmp(actbuf, "PUT /", 5))
 583                 strcpy(actbuf, &actbuf[5]);
 584         if (!strncasecmp(actbuf, "POST /", 6))
 585                 strcpy(actbuf, &actbuf[6]);
 586
 587         for (i = 0; i < strlen(actbuf); ++i) {
 588                 if (actbuf[i] == ' ') {
 589                         actbuf[i] = 0;
 590                         i = 0;
 591                 }
 592                 if (actbuf[i] == '/') {
 593                         actbuf[i] = 0;
 594                         i = 0;
 595                 }
 596                 if (actbuf[i] == '?') {
 597                         actbuf[i] = 0;
 598                         i = 0;
 599                 }
 600                 if (actbuf[i] == '&') {
 601                         actbuf[i] = 0;
 602                         i = 0;
 603                 }
 604         }
 605 }
 606
 607
 608 void upload_handler(char *name, char *filename, char *encoding,
 609                     void *content, char *cbtype, size_t length)
 610 {
 611
 612         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 613         fprintf(stderr, "    name = %s\n", name);
 614         fprintf(stderr, "filename = %s\n", filename);
 615         fprintf(stderr, "encoding = %s\n", encoding);
 616         fprintf(stderr, "    type = %s\n", cbtype);
 617         fprintf(stderr, "  length = %d\n", length);
 618
 619         if (strlen(name) > 0) {
 620                 upload = malloc(length);
 621                 if (upload != NULL) {
 622                         upload_length = length;
 623                         memcpy(upload, content, length);
 624                 }
 625         }
 626 }
 627
 628
 629 void session_loop(char *browser_host, char *user_agent)
 630 {
 631         char cmd[256];
 632         char action[256];
 633         char buf[256];
 634         int a, b;
 635         int ContentLength = 0;
 636         char ContentType[512];
 637         char *content;
 638
 639         /* We stuff these with the values coming from the client cookies,
 640          * so we can use them to reconnect a timed out session if we have to.
 641          */
 642         char c_host[256];
 643         char c_port[256];
 644         char c_username[256];
 645         char c_password[256];
 646         char c_roomname[256];
 647         char cookie[256];
 648
 649         strcpy(c_host, defaulthost);
 650         strcpy(c_port, defaultport);
 651         strcpy(c_username, "");
 652         strcpy(c_password, "");
 653         strcpy(c_roomname, "");
 654
 655         upload_length = 0;
 656         upload = NULL;
 657
 658         if (getz(cmd) == NULL)
 659                 return;
 660         extract_action(action, cmd);
 661
 662         do {
 663                 if (getz(buf) == NULL)
 664                         return;
 665
 666                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 667                         strcpy(cookie, &buf[15]);
 668                         cookie_to_stuff(cookie, NULL,
 669                                       c_username, c_password, c_roomname);
 670                 }
 671                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 672                         ContentLength = atoi(&buf[16]);
 673                 }
 674                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 675                         strcpy(ContentType, &buf[14]);
 676                 }
 677         } while (strlen(buf) > 0);
 678
 679         ++TransactionCount;
 680
 681         if (ContentLength > 0) {
 682                 content = malloc(ContentLength + 1);
 683                 fread(content, ContentLength, 1, stdin);
 684
 685                 content[ContentLength] = 0;
 686
 687                 if (!strncasecmp(ContentType,
 688                               "application/x-www-form-urlencoded", 33)) {
 689                         addurls(content);
 690                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 691                         mime_parser(content, ContentLength, ContentType,
 692                                     *upload_handler);
 693                 }
 694         } else {
 695                 content = NULL;
 696         }
 697
 698         /* If there are variables in the URL, we must grab them now */
 699         for (a = 0; a < strlen(cmd); ++a)
 700                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 701                         for (b = a; b < strlen(cmd); ++b)
 702                                 if (isspace(cmd[b]))
 703                                         cmd[b] = 0;
 704                         addurls(&cmd[a + 1]);
 705                         cmd[a] = 0;
 706                 }
 707         /*
 708          * If we're not connected to a Citadel server, try to hook up the
 709          * connection now.  Preference is given to the host and port specified
 710          * by browser cookies, if cookies have been supplied.
 711          */
 712         if (!connected) {
 713                 if (strlen(bstr("host")) > 0)
 714                         strcpy(c_host, bstr("host"));
 715                 if (strlen(bstr("port")) > 0)
 716                         strcpy(c_port, bstr("port"));
 717                 serv_sock = connectsock(c_host, c_port, "tcp");
 718                 if (serv_sock < 0) {
 719                         do_logout();
 720                 }
 721
 722                 connected = 1;
 723                 serv_gets(buf); /* get the server welcome message */
 724                 get_serv_info(browser_host, user_agent);
 725         }
 726         check_for_express_messages();
 727
 728         /*
 729          * If we're not logged in, but we have username and password cookies
 730          * supplied by the browser, try using them to log in.
 731          */
 732         if ((!logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 733                 serv_printf("USER %s", c_username);
 734                 serv_gets(buf);
 735                 if (buf[0] == '3') {
 736                         serv_printf("PASS %s", c_password);
 737                         serv_gets(buf);
 738                         if (buf[0] == '2') {
 739                                 become_logged_in(c_username, c_password, buf);
 740                         }
 741                 }
 742         }
 743         /*
 744          * If we don't have a current room, but a cookie specifying the
 745          * current room is supplied, make an effort to go there.
 746          */
 747         if ((strlen(wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 748                 serv_printf("GOTO %s", c_roomname);
 749                 serv_gets(buf);
 750                 if (buf[0] == '2') {
 751                         strcpy(wc_roomname, c_roomname);
 752                 }
 753         }
 754         if (!strcasecmp(action, "static")) {
 755                 strcpy(buf, &cmd[12]);
 756                 for (a = 0; a < strlen(buf); ++a)
 757                         if (isspace(buf[a]))
 758                                 buf[a] = 0;
 759                 output_static(buf);
 760         } else if (!strcasecmp(action, "image")) {
 761                 output_image();
 762         } else if ((!logged_in) && (!strcasecmp(action, "login"))) {
 763                 do_login();
 764         } else if (!logged_in) {
 765                 display_login(NULL);
 766         }
 767         /* Various commands... */
 768
 769         else if (!strcasecmp(action, "do_welcome")) {
 770                 do_welcome();
 771         } else if (!strcasecmp(action, "display_main_menu")) {
 772                 display_main_menu();
 773         } else if (!strcasecmp(action, "advanced")) {
 774                 display_advanced_menu();
 775         } else if (!strcasecmp(action, "whobbs")) {
 776                 whobbs();
 777         } else if (!strcasecmp(action, "knrooms")) {
 778                 list_all_rooms_by_floor();
 779         } else if (!strcasecmp(action, "gotonext")) {
 780                 slrp_highest();
 781                 gotonext();
 782         } else if (!strcasecmp(action, "skip")) {
 783                 gotonext();
 784         } else if (!strcasecmp(action, "ungoto")) {
 785                 ungoto();
 786         } else if (!strcasecmp(action, "dotgoto")) {
 787                 slrp_highest();
 788                 smart_goto(bstr("room"));
 789         } else if (!strcasecmp(action, "termquit")) {
 790                 do_logout();
 791         } else if (!strcasecmp(action, "readnew")) {
 792                 readloop("readnew");
 793         } else if (!strcasecmp(action, "readold")) {
 794                 readloop("readold");
 795         } else if (!strcasecmp(action, "readfwd")) {
 796                 readloop("readfwd");
 797         } else if (!strcasecmp(action, "display_enter")) {
 798                 display_enter();
 799         } else if (!strcasecmp(action, "post")) {
 800                 post_message();
 801         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 802                 confirm_delete_msg();
 803         } else if (!strcasecmp(action, "delete_msg")) {
 804                 delete_msg();
 805         } else if (!strcasecmp(action, "confirm_move_msg")) {
 806                 confirm_move_msg();
 807         } else if (!strcasecmp(action, "move_msg")) {
 808                 move_msg();
 809         } else if (!strcasecmp(action, "userlist")) {
 810                 userlist();
 811         } else if (!strcasecmp(action, "showuser")) {
 812                 showuser();
 813         } else if (!strcasecmp(action, "display_page")) {
 814                 display_page();
 815         } else if (!strcasecmp(action, "page_user")) {
 816                 page_user();
 817         } else if (!strcasecmp(action, "chat")) {
 818                 do_chat();
 819         } else if (!strcasecmp(action, "display_private")) {
 820                 display_private("", 0);
 821         } else if (!strcasecmp(action, "goto_private")) {
 822                 goto_private();
 823         } else if (!strcasecmp(action, "zapped_list")) {
 824                 zapped_list();
 825         } else if (!strcasecmp(action, "display_zap")) {
 826                 display_zap();
 827         } else if (!strcasecmp(action, "zap")) {
 828                 zap();
 829         } else if (!strcasecmp(action, "display_entroom")) {
 830                 display_entroom();
 831         } else if (!strcasecmp(action, "entroom")) {
 832                 entroom();
 833         } else if (!strcasecmp(action, "display_editroom")) {
 834                 display_editroom();
 835         } else if (!strcasecmp(action, "editroom")) {
 836                 editroom();
 837         } else if (!strcasecmp(action, "display_editinfo")) {
 838                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 839         } else if (!strcasecmp(action, "editinfo")) {
 840                 save_edit("Room info", "EINF 1", 1);
 841         } else if (!strcasecmp(action, "display_editbio")) {
 842                 sprintf(buf, "RBIO %s", wc_username);
 843                 display_edit("Your bio", "NOOP", buf, "editbio");
 844         } else if (!strcasecmp(action, "editbio")) {
 845                 save_edit("Your bio", "EBIO", 0);
 846         } else if (!strcasecmp(action, "confirm_delete_room")) {
 847                 confirm_delete_room();
 848         } else if (!strcasecmp(action, "delete_room")) {
 849                 delete_room();
 850         } else if (!strcasecmp(action, "validate")) {
 851                 validate();
 852         } else if (!strcasecmp(action, "display_editpic")) {
 853                 display_graphics_upload("your photo",
 854                                         "UIMG 0|_userpic_",
 855                                         "/editpic");
 856         } else if (!strcasecmp(action, "editpic")) {
 857                 do_graphics_upload("UIMG 1|_userpic_");
 858         } else if (!strcasecmp(action, "display_editroompic")) {
 859                 display_graphics_upload("the graphic for this room",
 860                                         "UIMG 0|_roompic_",
 861                                         "/editroompic");
 862         } else if (!strcasecmp(action, "editroompic")) {
 863                 do_graphics_upload("UIMG 1|_roompic_");
 864         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 865                 select_floor_to_edit_pic();
 866         } else if (!strcasecmp(action, "display_editfloorpic")) {
 867                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 868                         bstr("which_floor"));
 869                 display_graphics_upload("the graphic for this floor",
 870                                         buf,
 871                                         "/editfloorpic");
 872         } else if (!strcasecmp(action, "editfloorpic")) {
 873                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 874                         bstr("which_floor"));
 875                 do_graphics_upload(buf);
 876         } else if (!strcasecmp(action, "display_reg")) {
 877                 display_reg(0);
 878         } else if (!strcasecmp(action, "register")) {
 879                 register_user();
 880         } else if (!strcasecmp(action, "display_changepw")) {
 881                 display_changepw();
 882         } else if (!strcasecmp(action, "changepw")) {
 883                 changepw();
 884         } else if (!strcasecmp(action, "display_edit_node")) {
 885                 display_edit_node();
 886         } else if (!strcasecmp(action, "display_netconf")) {
 887                 display_netconf();
 888         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 889                 display_confirm_unshare();
 890         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 891                 display_confirm_delete_node();
 892         } else if (!strcasecmp(action, "delete_node")) {
 893                 delete_node();
 894         } else if (!strcasecmp(action, "unshare")) {
 895                 unshare();
 896         } else if (!strcasecmp(action, "display_add_node")) {
 897                 display_add_node();
 898         } else if (!strcasecmp(action, "add_node")) {
 899                 add_node();
 900         } else if (!strcasecmp(action, "display_share")) {
 901                 display_share();
 902         } else if (!strcasecmp(action, "share")) {
 903                 share();
 904         } else if (!strcasecmp(action, "terminate_session")) {
 905                 slrp_highest();
 906                 terminate_session();
 907         } else if (!strcasecmp(action, "edit_me")) {
 908                 edit_me();
 909         } else if (!strcasecmp(action, "display_siteconfig")) {
 910                 display_siteconfig();
 911         } else if (!strcasecmp(action, "siteconfig")) {
 912                 siteconfig();
 913         } else if (!strcasecmp(action, "display_generic")) {
 914                 display_generic();
 915         } else if (!strcasecmp(action, "do_generic")) {
 916                 do_generic();
 917         } else if (!strcasecmp(action, "display_menubar")) {
 918                 display_menubar(1);
 919         } else if (!strcasecmp(action, "diagnostics")) {
 920                 printf("HTTP/1.0 200 OK\n");
 921                 output_headers(1);
 922
 923                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 924                 wprintf("You're in session %d<HR>\n", wc_session);
 925                 wprintf("Command: <BR><PRE>\n");
 926                 escputs(cmd);
 927                 wprintf("</PRE><HR>\n");
 928                 wprintf("Variables: <BR><PRE>\n");
 929                 dump_vars();
 930                 wprintf("</PRE><HR>\n");
 931                 wDumpContent(1);
 932         }
 933         /* When all else fais, display the main menu. */
 934         else {
 935                 display_main_menu();
 936         }
 937
 938         fflush(stdout);
 939         if (content != NULL) {
 940                 free(content);
 941                 content = NULL;
 942         }
 943         free_urls();
 944         if (upload_length > 0) {
 945                 free(upload);
 946                 upload_length = 0;
 947         }
 948 }
 949
 950 int main(int argc, char *argv[])
 951 {
 952
 953         char browser[256];
 954         int bd;
 955
 956         if (argc != 6) {
 957                 fprintf(stderr,
 958                         "webcit: usage error (argc must be 6, not %d)\n",
 959                         argc);
 960                 return 1;
 961         }
 962
 963         wc_session = atoi(argv[1]);
 964         defaulthost = argv[2];
 965         defaultport = argv[3];
 966
 967         strcpy(wc_username, "");
 968         strcpy(wc_password, "");
 969         strcpy(wc_roomname, "");
 970
 971         /* Clear out serv_info and temporarily set the value of serv_humannode
 972          * to a default value, because it'll be used in HTML page titles
 973          */
 974         memset(&serv_info, 0, sizeof(serv_info));
 975         strcpy(serv_info.serv_humannode, "WebCit");
 976
 977         strcpy(browser, argv[5]);
 978         bd = browser_braindamage_check(browser);
 979
 980         while (1) {
 981                 session_loop(argv[4], browser);
 982         }
 983 }