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 TransactionCount = 0;
  26 char *ExpressMessages = NULL;
  27
  28 /* This variable is set to 1 if the room banner and menubar have been
  29  * displayed, and we need to close the <TABLE> tags.
  30  */
  31 int fake_frames = 0;
  32
  33 struct webcontent *wlist = NULL;
  34 struct webcontent *wlast = NULL;
  35
  36 struct urlcontent *urlstrings = NULL;
  37
  38 static const char *defaulthost = DEFAULT_HOST;
  39 static const char *defaultport = DEFAULT_PORT;
  40
  41
  42
  43 struct wcsession *WC = NULL;    /* FIX take this out when multithreaded */
  44
  45 void unescape_input(char *buf)
  46 {
  47         int a, b;
  48         char hex[3];
  49
  50         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  51                 buf[strlen(buf) - 1] = 0;
  52
  53         for (a = 0; a < strlen(buf); ++a) {
  54                 if (buf[a] == '+')
  55                         buf[a] = ' ';
  56                 if (buf[a] == '%') {
  57                         hex[0] = buf[a + 1];
  58                         hex[1] = buf[a + 2];
  59                         hex[2] = 0;
  60                         sscanf(hex, "%02x", &b);
  61                         buf[a] = (char) b;
  62                         strcpy(&buf[a + 1], &buf[a + 3]);
  63                 }
  64         }
  65
  66 }
  67
  68
  69 void addurls(char *url)
  70 {
  71         char *up, *ptr;
  72         char buf[256];
  73         int a, b;
  74         struct urlcontent *u;
  75
  76         up = url;
  77         while (strlen(up) > 0) {
  78
  79                 /* locate the = sign */
  80                 strncpy(buf, up, 255);
  81                 b = (-1);
  82                 for (a = 255; a >= 0; --a)
  83                         if (buf[a] == '=')
  84                                 b = a;
  85                 if (b < 0)
  86                         return;
  87                 buf[b] = 0;
  88
  89                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  90                 u->next = urlstrings;
  91                 urlstrings = u;
  92                 strcpy(u->url_key, buf);
  93
  94                 /* now chop that part off */
  95                 for (a = 0; a <= b; ++a)
  96                         ++up;
  97
  98                 /* locate the & sign */
  99                 ptr = up;
 100                 b = strlen(up);
 101                 for (a = 0; a < strlen(up); ++a) {
 102                         if (!strncmp(ptr, "&", 1)) {
 103                                 b = a;
 104                                 break;
 105                         }
 106                         ++ptr;
 107                 }
 108                 ptr = up;
 109                 for (a = 0; a < b; ++a)
 110                         ++ptr;
 111                 strcpy(ptr, "");
 112
 113                 u->url_data = malloc(strlen(up) + 1);
 114                 strcpy(u->url_data, up);
 115                 u->url_data[b] = 0;
 116                 unescape_input(u->url_data);
 117                 up = ptr;
 118                 ++up;
 119         }
 120 }
 121
 122 void free_urls(void)
 123 {
 124         struct urlcontent *u;
 125
 126         while (urlstrings != NULL) {
 127                 free(urlstrings->url_data);
 128                 u = urlstrings->next;
 129                 free(urlstrings);
 130                 urlstrings = u;
 131         }
 132 }
 133
 134 /*
 135  * Diagnostic function to display the contents of all variables
 136  */
 137 void dump_vars(void)
 138 {
 139         struct urlcontent *u;
 140
 141         for (u = urlstrings; u != NULL; u = u->next) {
 142                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 143         }
 144 }
 145
 146 char *bstr(char *key)
 147 {
 148         struct urlcontent *u;
 149
 150         for (u = urlstrings; u != NULL; u = u->next) {
 151                 if (!strcasecmp(u->url_key, key))
 152                         return (u->url_data);
 153         }
 154         return ("");
 155 }
 156
 157
 158 void wprintf(const char *format,...)
 159 {
 160         va_list arg_ptr;
 161         struct webcontent *wptr;
 162
 163         wptr = (struct webcontent *) malloc(sizeof(struct webcontent));
 164         wptr->next = NULL;
 165         if (wlist == NULL) {
 166                 wlist = wptr;
 167                 wlast = wptr;
 168         } else {
 169                 wlast->next = wptr;
 170                 wlast = wptr;
 171         }
 172
 173         va_start(arg_ptr, format);
 174         vsprintf(wptr->w_data, format, arg_ptr);
 175         va_end(arg_ptr);
 176 }
 177
 178 int wContentLength(void)
 179 {
 180         struct webcontent *wptr;
 181         int len = 0;
 182
 183         for (wptr = wlist; wptr != NULL; wptr = wptr->next) {
 184                 len = len + strlen(wptr->w_data);
 185         }
 186
 187         return (len);
 188 }
 189
 190 /*
 191  * wDumpContent() takes all the stuff that's been queued up using
 192  * the wprintf() and escputs() functions, and sends it out to the browser.
 193  * By queuing instead of transmitting as it's generated, we're able to
 194  * calculate a Content-length: header.
 195  *
 196  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 197  * append the main menu and closing tags, or 2 to
 198  * append the closing tags only.
 199  */
 200 void wDumpContent(int print_standard_html_footer)
 201 {
 202         struct webcontent *wptr;
 203
 204         if (fake_frames) {
 205                 wprintf("<CENTER><FONT SIZE=-1>"
 206                         "<TABLE border=0 width=100%><TR>"
 207                         "<TD><A HREF=\"/ungoto\">"
 208                         "<IMG SRC=\"/static/back.gif\" BORDER=0>"
 209                         "Ungoto</A></TD>");
 210                 wprintf("<TD><A HREF=\"#TheTop\">"
 211                         "<IMG SRC=\"/static/up.gif\" BORDER=0>"
 212                         "Top of page</A></TD>");
 213                 wprintf("<TD><A HREF=\"/display_enter\">"
 214                         "<IMG SRC=\"/static/enter.gif\" BORDER=0>"
 215                         "Enter a message</A></TD>");
 216                 wprintf("<TD><A HREF=\"/gotonext\">"
 217                         "Goto next room"
 218                         "<IMG SRC=\"/static/forward.gif\" BORDER=0></A></TD>"
 219                         "</TR></TABLE>"
 220                         "</FONT>\n"
 221                         "</TD></TR></TABLE></TABLE>\n");
 222                 fake_frames = 0;
 223         }
 224
 225         if (print_standard_html_footer) {
 226                 if (print_standard_html_footer != 2) {
 227                         wprintf("<BR>");
 228                 }
 229                 wprintf("</BODY></HTML>\n");
 230         }
 231         printf("Content-type: text/html\n");
 232         printf("Content-length: %d\n", wContentLength());
 233         printf("\n");
 234
 235         while (wlist != NULL) {
 236                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 237                 wptr = wlist->next;
 238                 free(wlist);
 239                 wlist = wptr;
 240         }
 241         wlast = NULL;
 242 }
 243
 244
 245 void escputs1(char *strbuf, int nbsp)
 246 {
 247         int a;
 248
 249         for (a = 0; a < strlen(strbuf); ++a) {
 250                 if (strbuf[a] == '<')
 251                         wprintf("&lt;");
 252                 else if (strbuf[a] == '>')
 253                         wprintf("&gt;");
 254                 else if (strbuf[a] == '&')
 255                         wprintf("&amp;");
 256                 else if (strbuf[a] == '\"')
 257                         wprintf("&quot;");
 258                 else if (strbuf[a] == '\'')
 259                         wprintf("&#39;");
 260                 else if (strbuf[a] == LB)
 261                         wprintf("<");
 262                 else if (strbuf[a] == RB)
 263                         wprintf(">");
 264                 else if (strbuf[a] == QU)
 265                         wprintf("\"");
 266                 else if ((strbuf[a] == 32) && (nbsp == 1)) {
 267                         wprintf("&nbsp;");
 268                 } else {
 269                         wprintf("%c", strbuf[a]);
 270                 }
 271         }
 272 }
 273
 274 void escputs(char *strbuf)
 275 {
 276         escputs1(strbuf, 0);
 277 }
 278
 279
 280
 281 char *urlesc(char *strbuf)
 282 {
 283         int a, b, c;
 284         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 285         static char outbuf[512];
 286
 287         strcpy(outbuf, "");
 288
 289         for (a = 0; a < strlen(strbuf); ++a) {
 290                 c = 0;
 291                 for (b = 0; b < strlen(ec); ++b) {
 292                         if (strbuf[a] == ec[b])
 293                                 c = 1;
 294                 }
 295                 b = strlen(outbuf);
 296                 if (c == 1)
 297                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 298                 else
 299                         sprintf(&outbuf[b], "%c", strbuf[a]);
 300         }
 301         return (outbuf);
 302 }
 303
 304 void urlescputs(char *strbuf)
 305 {
 306         wprintf("%s", urlesc(strbuf));
 307 }
 308
 309
 310
 311
 312 /*
 313  * Get a line of text from the webserver (which originally came from the
 314  * user's browser), checking for sanity etc.
 315  */
 316 char *getz(char *buf)
 317 {
 318         int e = 0;
 319
 320         bzero(buf, 256);
 321
 322         /* If fgets() fails, it's because the webserver crashed, so kill off
 323          * the session too.
 324          */
 325         if (fgets(buf, 256, stdin) == NULL) {
 326                 e = errno;
 327                 fprintf(stderr, "webcit: exit code %d (%s)\n",
 328                         e, strerror(e));
 329                 fflush(stderr);
 330                 exit(e);
 331
 332         /* Otherwise, strip out nonprintables and resume our happy day.
 333          */
 334         } else {
 335                 while ((strlen(buf) > 0) && (!isprint(buf[strlen(buf) - 1])))
 336                         buf[strlen(buf) - 1] = 0;
 337                 return buf;
 338         }
 339 }
 340
 341
 342
 343 /*
 344  * Output all that important stuff that the browser will want to see
 345  *
 346  * print_standard_html_head values:
 347  * 0 = Nothing.  Do not display any leading HTTP or HTML.
 348  * 1 = HTTP headers plus the "fake frames" found in most windows.
 349  * 2 = HTTP headers required to terminate the session (unset cookies)
 350  * 3 = HTTP headers only.
 351  */
 352 void output_headers(int print_standard_html_head)
 353 {
 354
 355         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 356         char cookie[256];
 357
 358         printf("Server: %s\n", SERVER);
 359         printf("Connection: close\n");
 360
 361         if (print_standard_html_head > 0) {
 362                 printf("Pragma: no-cache\n");
 363                 printf("Cache-Control: no-store\n");
 364         }
 365         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 366                         WC->wc_password, WC->wc_roomname);
 367         if (print_standard_html_head == 2) {
 368                 printf("X-WebCit-Session: close\n");
 369                 printf("Set-cookie: webcit=%s\n", unset);
 370         } else {
 371                 printf("Set-cookie: webcit=%s\n", cookie);
 372         }
 373
 374         if (print_standard_html_head > 0) {
 375                 wprintf("<HTML><HEAD><TITLE>");
 376                 escputs(serv_info.serv_humannode);
 377                 wprintf("</TITLE>\n"
 378                         "<META HTTP-EQUIV=\"Pragma\" CONTENT=\"no-cache\">\n"
 379                         "</HEAD>\n");
 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
 389
 390
 391                 /* JavaScript key-based navigation would go here if it
 392                  * were finished
 393                  */
 394
 395                 wprintf("<BODY ");
 396                 if (ExpressMessages != NULL) {
 397                         wprintf("onload=\"ExpressMessage()\" ");
 398                         free(ExpressMessages);
 399                         ExpressMessages = NULL;
 400                 }
 401                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 402
 403
 404         if (print_standard_html_head == 1) {
 405                 wprintf("<A NAME=\"TheTop\"></A>"
 406                         "<TABLE border=0 width=100%>"
 407                         "<TR VALIGN=TOP><TD>");
 408
 409                 display_menubar(0);
 410
 411                 wprintf("</TD><TD VALIGN=TOP>"
 412                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 413                         "<TD>\n");
 414
 415                 embed_room_banner(NULL);
 416
 417                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 418
 419                 fake_frames = 1;
 420                 }
 421         }
 422 }
 423
 424
 425
 426 void ExpressMessageCat(char *buf) {
 427         if (ExpressMessages == NULL) {
 428                 ExpressMessages = malloc(strlen(buf) + 4);
 429                 strcpy(ExpressMessages, "");
 430         } else {
 431                 ExpressMessages = realloc(ExpressMessages,
 432                         (strlen(ExpressMessages) + strlen(buf) + 4));
 433         }
 434         strcat(ExpressMessages, buf);
 435         strcat(ExpressMessages, "\\n");
 436 }
 437
 438
 439 void check_for_express_messages()
 440 {
 441         char buf[256];
 442
 443         serv_puts("PEXP");
 444         serv_gets(buf);
 445         if (buf[0] == '1') {
 446                 while (serv_gets(buf), strcmp(buf, "000")) {
 447                         ExpressMessageCat(buf);
 448                 }
 449         }
 450 }
 451
 452
 453
 454
 455 void output_static(char *what)
 456 {
 457         char buf[256];
 458         FILE *fp;
 459         struct stat statbuf;
 460         off_t bytes;
 461
 462         sprintf(buf, "static/%s", what);
 463         fp = fopen(buf, "rb");
 464         if (fp == NULL) {
 465                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 466                 output_headers(0);
 467                 printf("Content-Type: text/plain\n");
 468                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 469                 printf("Content-length: %d\n", strlen(buf));
 470                 printf("\n");
 471                 fwrite(buf, strlen(buf), 1, stdout);
 472         } else {
 473                 printf("HTTP/1.0 200 OK\n");
 474                 output_headers(0);
 475
 476                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 477                         printf("Content-type: image/gif\n");
 478                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 479                         printf("Content-type: text/plain\n");
 480                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 481                         printf("Content-type: image/jpeg\n");
 482                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 483                         printf("Content-type: text/html\n");
 484                 else
 485                         printf("Content-type: application/octet-stream\n");
 486
 487                 fstat(fileno(fp), &statbuf);
 488                 bytes = statbuf.st_size;
 489                 printf("Content-length: %ld\n", (long) bytes);
 490                 printf("\n");
 491                 while (bytes--) {
 492                         putc(getc(fp), stdout);
 493                 }
 494                 fflush(stdout);
 495                 fclose(fp);
 496         }
 497 }
 498
 499 void output_image()
 500 {
 501         char buf[256];
 502         char xferbuf[4096];
 503         off_t bytes;
 504         off_t thisblock;
 505         off_t accomplished = 0L;
 506
 507
 508         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 509         serv_gets(buf);
 510         if (buf[0] == '2') {
 511                 bytes = extract_long(&buf[4], 0);
 512                 printf("HTTP/1.0 200 OK\n");
 513                 output_headers(0);
 514                 printf("Content-type: image/gif\n");
 515                 printf("Content-length: %ld\n", (long) bytes);
 516                 printf("\n");
 517
 518                 while (bytes > (off_t) 0) {
 519                         thisblock = (off_t) sizeof(xferbuf);
 520                         if (thisblock > bytes)
 521                                 thisblock = bytes;
 522                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 523                         serv_gets(buf);
 524                         if (buf[0] == '6')
 525                                 thisblock = extract_long(&buf[4], 0);
 526                         serv_read(xferbuf, (int) thisblock);
 527                         fwrite(xferbuf, thisblock, 1, stdout);
 528                         bytes = bytes - thisblock;
 529                         accomplished = accomplished + thisblock;
 530                 }
 531                 fflush(stdout);
 532                 serv_puts("CLOS");
 533                 serv_gets(buf);
 534         } else {
 535                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 536                 output_headers(0);
 537                 printf("Content-Type: text/plain\n");
 538                 sprintf(buf, "Error retrieving image\n");
 539                 printf("Content-length: %d\n", strlen(buf));
 540                 printf("\n");
 541                 fwrite(buf, strlen(buf), 1, stdout);
 542         }
 543
 544 }
 545
 546
 547 /*
 548  * Convenience functions to display a page containing only a string
 549  */
 550 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 551 {
 552         printf("HTTP/1.0 200 OK\n");
 553         output_headers(1);
 554         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 555         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 556         wprintf("<B>%s</B>\n", titlebarmsg);
 557         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 558         escputs(messagetext);
 559
 560         wprintf("<HR>\n");
 561         embed_main_menu();
 562         wDumpContent(1);
 563 }
 564
 565 void display_error(char *errormessage)
 566 {
 567         convenience_page("770000", "Error", errormessage);
 568 }
 569
 570 void display_success(char *successmessage)
 571 {
 572         convenience_page("007700", "OK", successmessage);
 573 }
 574
 575
 576
 577 void extract_action(char *actbuf, char *cmdbuf)
 578 {
 579         int i;
 580
 581         strcpy(actbuf, cmdbuf);
 582         if (!strncasecmp(actbuf, "GET /", 5))
 583                 strcpy(actbuf, &actbuf[5]);
 584         if (!strncasecmp(actbuf, "PUT /", 5))
 585                 strcpy(actbuf, &actbuf[5]);
 586         if (!strncasecmp(actbuf, "POST /", 6))
 587                 strcpy(actbuf, &actbuf[6]);
 588
 589         for (i = 0; i < strlen(actbuf); ++i) {
 590                 if (actbuf[i] == ' ') {
 591                         actbuf[i] = 0;
 592                         i = 0;
 593                 }
 594                 if (actbuf[i] == '/') {
 595                         actbuf[i] = 0;
 596                         i = 0;
 597                 }
 598                 if (actbuf[i] == '?') {
 599                         actbuf[i] = 0;
 600                         i = 0;
 601                 }
 602                 if (actbuf[i] == '&') {
 603                         actbuf[i] = 0;
 604                         i = 0;
 605                 }
 606         }
 607 }
 608
 609
 610 void upload_handler(char *name, char *filename, char *encoding,
 611                     void *content, char *cbtype, size_t length)
 612 {
 613
 614         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 615         fprintf(stderr, "    name = %s\n", name);
 616         fprintf(stderr, "filename = %s\n", filename);
 617         fprintf(stderr, "encoding = %s\n", encoding);
 618         fprintf(stderr, "    type = %s\n", cbtype);
 619         fprintf(stderr, "  length = %d\n", length);
 620
 621         if (strlen(name) > 0) {
 622                 WC->upload = malloc(length);
 623                 if (WC->upload != NULL) {
 624                         WC->upload_length = length;
 625                         memcpy(WC->upload, content, length);
 626                 }
 627         }
 628 }
 629
 630
 631 void session_loop(char *browser_host, char *user_agent)
 632 {
 633         char cmd[256];
 634         char action[256];
 635         char buf[256];
 636         int a, b;
 637         int ContentLength = 0;
 638         char ContentType[512];
 639         char *content;
 640
 641         /* We stuff these with the values coming from the client cookies,
 642          * so we can use them to reconnect a timed out session if we have to.
 643          */
 644         char c_host[256];
 645         char c_port[256];
 646         char c_username[256];
 647         char c_password[256];
 648         char c_roomname[256];
 649         char cookie[256];
 650
 651         strcpy(c_host, defaulthost);
 652         strcpy(c_port, defaultport);
 653         strcpy(c_username, "");
 654         strcpy(c_password, "");
 655         strcpy(c_roomname, "");
 656
 657         WC->upload_length = 0;
 658         WC->upload = NULL;
 659
 660         if (getz(cmd) == NULL)
 661                 return;
 662         extract_action(action, cmd);
 663
 664         do {
 665                 if (getz(buf) == NULL)
 666                         return;
 667
 668                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 669                         strcpy(cookie, &buf[15]);
 670                         cookie_to_stuff(cookie, NULL,
 671                                       c_username, c_password, c_roomname);
 672                 }
 673                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 674                         ContentLength = atoi(&buf[16]);
 675                 }
 676                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 677                         strcpy(ContentType, &buf[14]);
 678                 }
 679         } while (strlen(buf) > 0);
 680
 681         ++TransactionCount;
 682
 683         if (ContentLength > 0) {
 684                 content = malloc(ContentLength + 1);
 685                 fread(content, ContentLength, 1, stdin);
 686
 687                 content[ContentLength] = 0;
 688
 689                 if (!strncasecmp(ContentType,
 690                               "application/x-www-form-urlencoded", 33)) {
 691                         addurls(content);
 692                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 693                         mime_parser(content, ContentLength, ContentType,
 694                                     *upload_handler);
 695                 }
 696         } else {
 697                 content = NULL;
 698         }
 699
 700         /* If there are variables in the URL, we must grab them now */
 701         for (a = 0; a < strlen(cmd); ++a)
 702                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 703                         for (b = a; b < strlen(cmd); ++b)
 704                                 if (isspace(cmd[b]))
 705                                         cmd[b] = 0;
 706                         addurls(&cmd[a + 1]);
 707                         cmd[a] = 0;
 708                 }
 709         /*
 710          * If we're not WC->connected to a Citadel server, try to hook up the
 711          * connection now.  Preference is given to the host and port specified
 712          * by browser cookies, if cookies have been supplied.
 713          */
 714         if (!WC->connected) {
 715                 if (strlen(bstr("host")) > 0)
 716                         strcpy(c_host, bstr("host"));
 717                 if (strlen(bstr("port")) > 0)
 718                         strcpy(c_port, bstr("port"));
 719                 WC->serv_sock = connectsock(c_host, c_port, "tcp");
 720                 if (WC->serv_sock < 0) {
 721                         do_logout();
 722                 }
 723
 724                 WC->connected = 1;
 725                 serv_gets(buf); /* get the server welcome message */
 726                 get_serv_info(browser_host, user_agent);
 727         }
 728         check_for_express_messages();
 729
 730         /*
 731          * If we're not logged in, but we have username and password cookies
 732          * supplied by the browser, try using them to log in.
 733          */
 734         if ((!WC->logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 735                 serv_printf("USER %s", c_username);
 736                 serv_gets(buf);
 737                 if (buf[0] == '3') {
 738                         serv_printf("PASS %s", c_password);
 739                         serv_gets(buf);
 740                         if (buf[0] == '2') {
 741                                 become_logged_in(c_username, c_password, buf);
 742                         }
 743                 }
 744         }
 745         /*
 746          * If we don't have a current room, but a cookie specifying the
 747          * current room is supplied, make an effort to go there.
 748          */
 749         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 750                 serv_printf("GOTO %s", c_roomname);
 751                 serv_gets(buf);
 752                 if (buf[0] == '2') {
 753                         strcpy(WC->wc_roomname, c_roomname);
 754                 }
 755         }
 756         if (!strcasecmp(action, "static")) {
 757                 strcpy(buf, &cmd[12]);
 758                 for (a = 0; a < strlen(buf); ++a)
 759                         if (isspace(buf[a]))
 760                                 buf[a] = 0;
 761                 output_static(buf);
 762         } else if (!strcasecmp(action, "image")) {
 763                 output_image();
 764         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
 765                 do_login();
 766         } else if (!WC->logged_in) {
 767                 display_login(NULL);
 768         }
 769         /* Various commands... */
 770
 771         else if (!strcasecmp(action, "do_welcome")) {
 772                 do_welcome();
 773         } else if (!strcasecmp(action, "display_main_menu")) {
 774                 display_main_menu();
 775         } else if (!strcasecmp(action, "advanced")) {
 776                 display_advanced_menu();
 777         } else if (!strcasecmp(action, "whobbs")) {
 778                 whobbs();
 779         } else if (!strcasecmp(action, "knrooms")) {
 780                 list_all_rooms_by_floor();
 781         } else if (!strcasecmp(action, "gotonext")) {
 782                 slrp_highest();
 783                 gotonext();
 784         } else if (!strcasecmp(action, "skip")) {
 785                 gotonext();
 786         } else if (!strcasecmp(action, "ungoto")) {
 787                 ungoto();
 788         } else if (!strcasecmp(action, "dotgoto")) {
 789                 slrp_highest();
 790                 smart_goto(bstr("room"));
 791         } else if (!strcasecmp(action, "termquit")) {
 792                 do_logout();
 793         } else if (!strcasecmp(action, "readnew")) {
 794                 readloop("readnew");
 795         } else if (!strcasecmp(action, "readold")) {
 796                 readloop("readold");
 797         } else if (!strcasecmp(action, "readfwd")) {
 798                 readloop("readfwd");
 799         } else if (!strcasecmp(action, "display_enter")) {
 800                 display_enter();
 801         } else if (!strcasecmp(action, "post")) {
 802                 post_message();
 803         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 804                 confirm_delete_msg();
 805         } else if (!strcasecmp(action, "delete_msg")) {
 806                 delete_msg();
 807         } else if (!strcasecmp(action, "confirm_move_msg")) {
 808                 confirm_move_msg();
 809         } else if (!strcasecmp(action, "move_msg")) {
 810                 move_msg();
 811         } else if (!strcasecmp(action, "userlist")) {
 812                 userlist();
 813         } else if (!strcasecmp(action, "showuser")) {
 814                 showuser();
 815         } else if (!strcasecmp(action, "display_page")) {
 816                 display_page();
 817         } else if (!strcasecmp(action, "page_user")) {
 818                 page_user();
 819         } else if (!strcasecmp(action, "chat")) {
 820                 do_chat();
 821         } else if (!strcasecmp(action, "display_private")) {
 822                 display_private("", 0);
 823         } else if (!strcasecmp(action, "goto_private")) {
 824                 goto_private();
 825         } else if (!strcasecmp(action, "zapped_list")) {
 826                 zapped_list();
 827         } else if (!strcasecmp(action, "display_zap")) {
 828                 display_zap();
 829         } else if (!strcasecmp(action, "zap")) {
 830                 zap();
 831         } else if (!strcasecmp(action, "display_entroom")) {
 832                 display_entroom();
 833         } else if (!strcasecmp(action, "entroom")) {
 834                 entroom();
 835         } else if (!strcasecmp(action, "display_editroom")) {
 836                 display_editroom();
 837         } else if (!strcasecmp(action, "editroom")) {
 838                 editroom();
 839         } else if (!strcasecmp(action, "display_editinfo")) {
 840                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 841         } else if (!strcasecmp(action, "editinfo")) {
 842                 save_edit("Room info", "EINF 1", 1);
 843         } else if (!strcasecmp(action, "display_editbio")) {
 844                 sprintf(buf, "RBIO %s", WC->wc_username);
 845                 display_edit("Your bio", "NOOP", buf, "editbio");
 846         } else if (!strcasecmp(action, "editbio")) {
 847                 save_edit("Your bio", "EBIO", 0);
 848         } else if (!strcasecmp(action, "confirm_delete_room")) {
 849                 confirm_delete_room();
 850         } else if (!strcasecmp(action, "delete_room")) {
 851                 delete_room();
 852         } else if (!strcasecmp(action, "validate")) {
 853                 validate();
 854         } else if (!strcasecmp(action, "display_editpic")) {
 855                 display_graphics_upload("your photo",
 856                                         "UIMG 0|_userpic_",
 857                                         "/editpic");
 858         } else if (!strcasecmp(action, "editpic")) {
 859                 do_graphics_upload("UIMG 1|_userpic_");
 860         } else if (!strcasecmp(action, "display_editroompic")) {
 861                 display_graphics_upload("the graphic for this room",
 862                                         "UIMG 0|_roompic_",
 863                                         "/editroompic");
 864         } else if (!strcasecmp(action, "editroompic")) {
 865                 do_graphics_upload("UIMG 1|_roompic_");
 866         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 867                 select_floor_to_edit_pic();
 868         } else if (!strcasecmp(action, "display_editfloorpic")) {
 869                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 870                         bstr("which_floor"));
 871                 display_graphics_upload("the graphic for this floor",
 872                                         buf,
 873                                         "/editfloorpic");
 874         } else if (!strcasecmp(action, "editfloorpic")) {
 875                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 876                         bstr("which_floor"));
 877                 do_graphics_upload(buf);
 878         } else if (!strcasecmp(action, "display_reg")) {
 879                 display_reg(0);
 880         } else if (!strcasecmp(action, "register")) {
 881                 register_user();
 882         } else if (!strcasecmp(action, "display_changepw")) {
 883                 display_changepw();
 884         } else if (!strcasecmp(action, "changepw")) {
 885                 changepw();
 886         } else if (!strcasecmp(action, "display_edit_node")) {
 887                 display_edit_node();
 888         } else if (!strcasecmp(action, "display_netconf")) {
 889                 display_netconf();
 890         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 891                 display_confirm_unshare();
 892         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 893                 display_confirm_delete_node();
 894         } else if (!strcasecmp(action, "delete_node")) {
 895                 delete_node();
 896         } else if (!strcasecmp(action, "unshare")) {
 897                 unshare();
 898         } else if (!strcasecmp(action, "display_add_node")) {
 899                 display_add_node();
 900         } else if (!strcasecmp(action, "add_node")) {
 901                 add_node();
 902         } else if (!strcasecmp(action, "display_share")) {
 903                 display_share();
 904         } else if (!strcasecmp(action, "share")) {
 905                 share();
 906         } else if (!strcasecmp(action, "terminate_session")) {
 907                 slrp_highest();
 908                 terminate_session();
 909         } else if (!strcasecmp(action, "edit_me")) {
 910                 edit_me();
 911         } else if (!strcasecmp(action, "display_siteconfig")) {
 912                 display_siteconfig();
 913         } else if (!strcasecmp(action, "siteconfig")) {
 914                 siteconfig();
 915         } else if (!strcasecmp(action, "display_generic")) {
 916                 display_generic();
 917         } else if (!strcasecmp(action, "do_generic")) {
 918                 do_generic();
 919         } else if (!strcasecmp(action, "display_menubar")) {
 920                 display_menubar(1);
 921         } else if (!strcasecmp(action, "diagnostics")) {
 922                 printf("HTTP/1.0 200 OK\n");
 923                 output_headers(1);
 924
 925                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 926                 wprintf("You're in session %d<HR>\n", WC->wc_session);
 927                 wprintf("Command: <BR><PRE>\n");
 928                 escputs(cmd);
 929                 wprintf("</PRE><HR>\n");
 930                 wprintf("Variables: <BR><PRE>\n");
 931                 dump_vars();
 932                 wprintf("</PRE><HR>\n");
 933                 wDumpContent(1);
 934         }
 935         /* When all else fais, display the main menu. */
 936         else {
 937                 display_main_menu();
 938         }
 939
 940         fflush(stdout);
 941         if (content != NULL) {
 942                 free(content);
 943                 content = NULL;
 944         }
 945         free_urls();
 946         if (WC->upload_length > 0) {
 947                 free(WC->upload);
 948                 WC->upload_length = 0;
 949         }
 950 }
 951
 952 int main(int argc, char *argv[])
 953 {
 954
 955         char browser[256];
 956         int bd;
 957
 958         if (argc != 6) {
 959                 fprintf(stderr,
 960                         "webcit: usage error (argc must be 6, not %d)\n",
 961                         argc);
 962                 return 1;
 963         }
 964
 965         WC = (struct wcsession *) malloc(sizeof(struct wcsession));
 966         memset(WC, 0, sizeof(struct wcsession));
 967
 968
 969
 970         WC->wc_session = atoi(argv[1]);
 971         defaulthost = argv[2];
 972         defaultport = argv[3];
 973
 974         strcpy(WC->wc_username, "");
 975         strcpy(WC->wc_password, "");
 976         strcpy(WC->wc_roomname, "");
 977
 978         /* Clear out serv_info and temporarily set the value of serv_humannode
 979          * to a default value, because it'll be used in HTML page titles
 980          */
 981         memset(&serv_info, 0, sizeof(serv_info));
 982         strcpy(serv_info.serv_humannode, "WebCit");
 983
 984         strcpy(browser, argv[5]);
 985         bd = browser_braindamage_check(browser);
 986
 987         while (1) {
 988                 session_loop(argv[4], browser);
 989         }
 990 }