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
 394                 /* Print JavaScript key capture
 395                  *  for key-based navigation
 396                  */
 397                 wprintf(
 398                 "<SCRIPT LANGUAGE=\"JavaScript\">\n"
 399                 "function nav(e) {\n"
 400                 "var keyChar = String.fromCharCode(e.which);\n"
 401                 "switch(keyChar.toLowerCase()) {\n"
 402                 );
 403                 wprintf(
 404                 "case \"g\": document.location=\"/gotonext\";\n"
 405                 "break;\n"
 406                 "case \"e\": document.location=\"/display_enter\";\n"
 407                 "break;\n"
 408                 "case \"k\": document.location=\"/knrooms\";\n"
 409                 "break;\n"
 410                 "case \"s\": document.location=\"/skip\";\n"
 411                 "break;\n"
 412                 );
 413                 wprintf(
 414                 "case \"u\": document.location=\"/ungoto\";\n"
 415                 "break;\n"
 416                 "case \"n\": document.location=\"/readnew\";\n"
 417                 "break;\n"
 418                 "case \"w\": document.location=\"/whobbs\";\n"
 419                 "break;\n"
 420                 );
 421                 wprintf(
 422                 "case \"p\": document.location=\"/display_page\";\n"
 423                 "break;\n"
 424                 "case \"c\": document.location=\"/chat\";\n"
 425                 "break;\n"
 426                 "case \"z\": document.location=\"/display_zap\";\n"
 427                 "break;\n"
 428                 );
 429                 wprintf(
 430                 "}\n"
 431                 "}\n"
 432                 "document.captureEvents(Event.KEYPRESS);\n"
 433                 "document.onKeyPress = nav;\n"
 434                 "</SCRIPT>\n"
 435                 );
 436
 437                 /* end JavaScript-based key navigation */
 438
 439
 440                 wprintf("<BODY ");
 441                 if (ExpressMessages != NULL) {
 442                         wprintf("onload=\"ExpressMessage()\" ");
 443                         free(ExpressMessages);
 444                         ExpressMessages = NULL;
 445                 }
 446                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 447
 448
 449         if (print_standard_html_head == 1) {
 450                 wprintf("<A NAME=\"TheTop\"></A>"
 451                         "<TABLE border=0 width=100%>"
 452                         "<TR VALIGN=TOP><TD>");
 453
 454                 display_menubar(0);
 455
 456                 wprintf("</TD><TD VALIGN=TOP>"
 457                         "<TABLE border=0 width=100%><TR VALIGN=TOP>"
 458                         "<TD>\n");
 459
 460                 embed_room_banner(NULL);
 461
 462                 wprintf("</TD></TR><TR VALIGN=TOP><TD>\n");
 463
 464                 fake_frames = 1;
 465                 }
 466         }
 467 }
 468
 469
 470
 471 void ExpressMessageCat(char *buf) {
 472         if (ExpressMessages == NULL) {
 473                 ExpressMessages = malloc(strlen(buf) + 4);
 474                 strcpy(ExpressMessages, "");
 475         } else {
 476                 ExpressMessages = realloc(ExpressMessages,
 477                         (strlen(ExpressMessages) + strlen(buf) + 4));
 478         }
 479         strcat(ExpressMessages, buf);
 480         strcat(ExpressMessages, "\\n");
 481 }
 482
 483
 484 void check_for_express_messages()
 485 {
 486         char buf[256];
 487
 488         serv_puts("PEXP");
 489         serv_gets(buf);
 490         if (buf[0] == '1') {
 491                 while (serv_gets(buf), strcmp(buf, "000")) {
 492                         ExpressMessageCat(buf);
 493                 }
 494         }
 495 }
 496
 497
 498
 499
 500 void output_static(char *what)
 501 {
 502         char buf[256];
 503         FILE *fp;
 504         struct stat statbuf;
 505         off_t bytes;
 506
 507         sprintf(buf, "static/%s", what);
 508         fp = fopen(buf, "rb");
 509         if (fp == NULL) {
 510                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 511                 output_headers(0);
 512                 printf("Content-Type: text/plain\n");
 513                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 514                 printf("Content-length: %d\n", strlen(buf));
 515                 printf("\n");
 516                 fwrite(buf, strlen(buf), 1, stdout);
 517         } else {
 518                 printf("HTTP/1.0 200 OK\n");
 519                 output_headers(0);
 520
 521                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 522                         printf("Content-type: image/gif\n");
 523                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 524                         printf("Content-type: text/plain\n");
 525                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 526                         printf("Content-type: image/jpeg\n");
 527                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 528                         printf("Content-type: text/html\n");
 529                 else
 530                         printf("Content-type: application/octet-stream\n");
 531
 532                 fstat(fileno(fp), &statbuf);
 533                 bytes = statbuf.st_size;
 534                 printf("Content-length: %ld\n", (long) bytes);
 535                 printf("\n");
 536                 while (bytes--) {
 537                         putc(getc(fp), stdout);
 538                 }
 539                 fflush(stdout);
 540                 fclose(fp);
 541         }
 542 }
 543
 544 void output_image()
 545 {
 546         char buf[256];
 547         char xferbuf[4096];
 548         off_t bytes;
 549         off_t thisblock;
 550         off_t accomplished = 0L;
 551
 552
 553         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 554         serv_gets(buf);
 555         if (buf[0] == '2') {
 556                 bytes = extract_long(&buf[4], 0);
 557                 printf("HTTP/1.0 200 OK\n");
 558                 output_headers(0);
 559                 printf("Content-type: image/gif\n");
 560                 printf("Content-length: %ld\n", (long) bytes);
 561                 printf("\n");
 562
 563                 while (bytes > (off_t) 0) {
 564                         thisblock = (off_t) sizeof(xferbuf);
 565                         if (thisblock > bytes)
 566                                 thisblock = bytes;
 567                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 568                         serv_gets(buf);
 569                         if (buf[0] == '6')
 570                                 thisblock = extract_long(&buf[4], 0);
 571                         serv_read(xferbuf, (int) thisblock);
 572                         fwrite(xferbuf, thisblock, 1, stdout);
 573                         bytes = bytes - thisblock;
 574                         accomplished = accomplished + thisblock;
 575                 }
 576                 fflush(stdout);
 577                 serv_puts("CLOS");
 578                 serv_gets(buf);
 579         } else {
 580                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 581                 output_headers(0);
 582                 printf("Content-Type: text/plain\n");
 583                 sprintf(buf, "Error retrieving image\n");
 584                 printf("Content-length: %d\n", strlen(buf));
 585                 printf("\n");
 586                 fwrite(buf, strlen(buf), 1, stdout);
 587         }
 588
 589 }
 590
 591
 592 /*
 593  * Convenience functions to display a page containing only a string
 594  */
 595 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 596 {
 597         printf("HTTP/1.0 200 OK\n");
 598         output_headers(1);
 599         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 600         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 601         wprintf("<B>%s</B>\n", titlebarmsg);
 602         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 603         escputs(messagetext);
 604
 605         wprintf("<HR>\n");
 606         embed_main_menu();
 607         wDumpContent(1);
 608 }
 609
 610 void display_error(char *errormessage)
 611 {
 612         convenience_page("770000", "Error", errormessage);
 613 }
 614
 615 void display_success(char *successmessage)
 616 {
 617         convenience_page("007700", "OK", successmessage);
 618 }
 619
 620
 621
 622 void extract_action(char *actbuf, char *cmdbuf)
 623 {
 624         int i;
 625
 626         strcpy(actbuf, cmdbuf);
 627         if (!strncasecmp(actbuf, "GET /", 5))
 628                 strcpy(actbuf, &actbuf[5]);
 629         if (!strncasecmp(actbuf, "PUT /", 5))
 630                 strcpy(actbuf, &actbuf[5]);
 631         if (!strncasecmp(actbuf, "POST /", 6))
 632                 strcpy(actbuf, &actbuf[6]);
 633
 634         for (i = 0; i < strlen(actbuf); ++i) {
 635                 if (actbuf[i] == ' ') {
 636                         actbuf[i] = 0;
 637                         i = 0;
 638                 }
 639                 if (actbuf[i] == '/') {
 640                         actbuf[i] = 0;
 641                         i = 0;
 642                 }
 643                 if (actbuf[i] == '?') {
 644                         actbuf[i] = 0;
 645                         i = 0;
 646                 }
 647                 if (actbuf[i] == '&') {
 648                         actbuf[i] = 0;
 649                         i = 0;
 650                 }
 651         }
 652 }
 653
 654
 655 void upload_handler(char *name, char *filename, char *encoding,
 656                     void *content, char *cbtype, size_t length)
 657 {
 658
 659         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 660         fprintf(stderr, "    name = %s\n", name);
 661         fprintf(stderr, "filename = %s\n", filename);
 662         fprintf(stderr, "encoding = %s\n", encoding);
 663         fprintf(stderr, "    type = %s\n", cbtype);
 664         fprintf(stderr, "  length = %d\n", length);
 665
 666         if (strlen(name) > 0) {
 667                 upload = malloc(length);
 668                 if (upload != NULL) {
 669                         upload_length = length;
 670                         memcpy(upload, content, length);
 671                 }
 672         }
 673 }
 674
 675
 676 void session_loop(char *browser_host, char *user_agent)
 677 {
 678         char cmd[256];
 679         char action[256];
 680         char buf[256];
 681         int a, b;
 682         int ContentLength = 0;
 683         char ContentType[512];
 684         char *content;
 685
 686         /* We stuff these with the values coming from the client cookies,
 687          * so we can use them to reconnect a timed out session if we have to.
 688          */
 689         char c_host[256];
 690         char c_port[256];
 691         char c_username[256];
 692         char c_password[256];
 693         char c_roomname[256];
 694         char cookie[256];
 695
 696         strcpy(c_host, defaulthost);
 697         strcpy(c_port, defaultport);
 698         strcpy(c_username, "");
 699         strcpy(c_password, "");
 700         strcpy(c_roomname, "");
 701
 702         upload_length = 0;
 703         upload = NULL;
 704
 705         if (getz(cmd) == NULL)
 706                 return;
 707         extract_action(action, cmd);
 708
 709         do {
 710                 if (getz(buf) == NULL)
 711                         return;
 712
 713                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 714                         strcpy(cookie, &buf[15]);
 715                         cookie_to_stuff(cookie, NULL,
 716                                       c_username, c_password, c_roomname);
 717                 }
 718                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 719                         ContentLength = atoi(&buf[16]);
 720                 }
 721                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 722                         strcpy(ContentType, &buf[14]);
 723                 }
 724         } while (strlen(buf) > 0);
 725
 726         ++TransactionCount;
 727
 728         if (ContentLength > 0) {
 729                 content = malloc(ContentLength + 1);
 730                 fread(content, ContentLength, 1, stdin);
 731
 732                 content[ContentLength] = 0;
 733
 734                 if (!strncasecmp(ContentType,
 735                               "application/x-www-form-urlencoded", 33)) {
 736                         addurls(content);
 737                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 738                         mime_parser(content, ContentLength, ContentType,
 739                                     *upload_handler);
 740                 }
 741         } else {
 742                 content = NULL;
 743         }
 744
 745         /* If there are variables in the URL, we must grab them now */
 746         for (a = 0; a < strlen(cmd); ++a)
 747                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 748                         for (b = a; b < strlen(cmd); ++b)
 749                                 if (isspace(cmd[b]))
 750                                         cmd[b] = 0;
 751                         addurls(&cmd[a + 1]);
 752                         cmd[a] = 0;
 753                 }
 754         /*
 755          * If we're not connected to a Citadel server, try to hook up the
 756          * connection now.  Preference is given to the host and port specified
 757          * by browser cookies, if cookies have been supplied.
 758          */
 759         if (!connected) {
 760                 if (strlen(bstr("host")) > 0)
 761                         strcpy(c_host, bstr("host"));
 762                 if (strlen(bstr("port")) > 0)
 763                         strcpy(c_port, bstr("port"));
 764                 serv_sock = connectsock(c_host, c_port, "tcp");
 765                 if (serv_sock < 0) {
 766                         do_logout();
 767                 }
 768
 769                 connected = 1;
 770                 serv_gets(buf); /* get the server welcome message */
 771                 get_serv_info(browser_host, user_agent);
 772         }
 773         check_for_express_messages();
 774
 775         /*
 776          * If we're not logged in, but we have username and password cookies
 777          * supplied by the browser, try using them to log in.
 778          */
 779         if ((!logged_in) && (strlen(c_username) > 0) && (strlen(c_password) > 0)) {
 780                 serv_printf("USER %s", c_username);
 781                 serv_gets(buf);
 782                 if (buf[0] == '3') {
 783                         serv_printf("PASS %s", c_password);
 784                         serv_gets(buf);
 785                         if (buf[0] == '2') {
 786                                 become_logged_in(c_username, c_password, buf);
 787                         }
 788                 }
 789         }
 790         /*
 791          * If we don't have a current room, but a cookie specifying the
 792          * current room is supplied, make an effort to go there.
 793          */
 794         if ((strlen(wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
 795                 serv_printf("GOTO %s", c_roomname);
 796                 serv_gets(buf);
 797                 if (buf[0] == '2') {
 798                         strcpy(wc_roomname, c_roomname);
 799                 }
 800         }
 801         if (!strcasecmp(action, "static")) {
 802                 strcpy(buf, &cmd[12]);
 803                 for (a = 0; a < strlen(buf); ++a)
 804                         if (isspace(buf[a]))
 805                                 buf[a] = 0;
 806                 output_static(buf);
 807         } else if (!strcasecmp(action, "image")) {
 808                 output_image();
 809         } else if ((!logged_in) && (!strcasecmp(action, "login"))) {
 810                 do_login();
 811         } else if (!logged_in) {
 812                 display_login(NULL);
 813         }
 814         /* Various commands... */
 815
 816         else if (!strcasecmp(action, "do_welcome")) {
 817                 do_welcome();
 818         } else if (!strcasecmp(action, "display_main_menu")) {
 819                 display_main_menu();
 820         } else if (!strcasecmp(action, "advanced")) {
 821                 display_advanced_menu();
 822         } else if (!strcasecmp(action, "whobbs")) {
 823                 whobbs();
 824         } else if (!strcasecmp(action, "knrooms")) {
 825                 list_all_rooms_by_floor();
 826         } else if (!strcasecmp(action, "gotonext")) {
 827                 slrp_highest();
 828                 gotonext();
 829         } else if (!strcasecmp(action, "skip")) {
 830                 gotonext();
 831         } else if (!strcasecmp(action, "ungoto")) {
 832                 ungoto();
 833         } else if (!strcasecmp(action, "dotgoto")) {
 834                 slrp_highest();
 835                 smart_goto(bstr("room"));
 836         } else if (!strcasecmp(action, "termquit")) {
 837                 do_logout();
 838         } else if (!strcasecmp(action, "readnew")) {
 839                 readloop("readnew");
 840         } else if (!strcasecmp(action, "readold")) {
 841                 readloop("readold");
 842         } else if (!strcasecmp(action, "readfwd")) {
 843                 readloop("readfwd");
 844         } else if (!strcasecmp(action, "display_enter")) {
 845                 display_enter();
 846         } else if (!strcasecmp(action, "post")) {
 847                 post_message();
 848         } else if (!strcasecmp(action, "confirm_delete_msg")) {
 849                 confirm_delete_msg();
 850         } else if (!strcasecmp(action, "delete_msg")) {
 851                 delete_msg();
 852         } else if (!strcasecmp(action, "confirm_move_msg")) {
 853                 confirm_move_msg();
 854         } else if (!strcasecmp(action, "move_msg")) {
 855                 move_msg();
 856         } else if (!strcasecmp(action, "userlist")) {
 857                 userlist();
 858         } else if (!strcasecmp(action, "showuser")) {
 859                 showuser();
 860         } else if (!strcasecmp(action, "display_page")) {
 861                 display_page();
 862         } else if (!strcasecmp(action, "page_user")) {
 863                 page_user();
 864         } else if (!strcasecmp(action, "chat")) {
 865                 do_chat();
 866         } else if (!strcasecmp(action, "display_private")) {
 867                 display_private("", 0);
 868         } else if (!strcasecmp(action, "goto_private")) {
 869                 goto_private();
 870         } else if (!strcasecmp(action, "zapped_list")) {
 871                 zapped_list();
 872         } else if (!strcasecmp(action, "display_zap")) {
 873                 display_zap();
 874         } else if (!strcasecmp(action, "zap")) {
 875                 zap();
 876         } else if (!strcasecmp(action, "display_entroom")) {
 877                 display_entroom();
 878         } else if (!strcasecmp(action, "entroom")) {
 879                 entroom();
 880         } else if (!strcasecmp(action, "display_editroom")) {
 881                 display_editroom();
 882         } else if (!strcasecmp(action, "editroom")) {
 883                 editroom();
 884         } else if (!strcasecmp(action, "display_editinfo")) {
 885                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 886         } else if (!strcasecmp(action, "editinfo")) {
 887                 save_edit("Room info", "EINF 1", 1);
 888         } else if (!strcasecmp(action, "display_editbio")) {
 889                 sprintf(buf, "RBIO %s", wc_username);
 890                 display_edit("Your bio", "NOOP", buf, "editbio");
 891         } else if (!strcasecmp(action, "editbio")) {
 892                 save_edit("Your bio", "EBIO", 0);
 893         } else if (!strcasecmp(action, "confirm_delete_room")) {
 894                 confirm_delete_room();
 895         } else if (!strcasecmp(action, "delete_room")) {
 896                 delete_room();
 897         } else if (!strcasecmp(action, "validate")) {
 898                 validate();
 899         } else if (!strcasecmp(action, "display_editpic")) {
 900                 display_graphics_upload("your photo",
 901                                         "UIMG 0|_userpic_",
 902                                         "/editpic");
 903         } else if (!strcasecmp(action, "editpic")) {
 904                 do_graphics_upload("UIMG 1|_userpic_");
 905         } else if (!strcasecmp(action, "display_editroompic")) {
 906                 display_graphics_upload("the graphic for this room",
 907                                         "UIMG 0|_roompic_",
 908                                         "/editroompic");
 909         } else if (!strcasecmp(action, "editroompic")) {
 910                 do_graphics_upload("UIMG 1|_roompic_");
 911         } else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 912                 select_floor_to_edit_pic();
 913         } else if (!strcasecmp(action, "display_editfloorpic")) {
 914                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 915                         bstr("which_floor"));
 916                 display_graphics_upload("the graphic for this floor",
 917                                         buf,
 918                                         "/editfloorpic");
 919         } else if (!strcasecmp(action, "editfloorpic")) {
 920                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 921                         bstr("which_floor"));
 922                 do_graphics_upload(buf);
 923         } else if (!strcasecmp(action, "display_reg")) {
 924                 display_reg(0);
 925         } else if (!strcasecmp(action, "register")) {
 926                 register_user();
 927         } else if (!strcasecmp(action, "display_changepw")) {
 928                 display_changepw();
 929         } else if (!strcasecmp(action, "changepw")) {
 930                 changepw();
 931         } else if (!strcasecmp(action, "display_edit_node")) {
 932                 display_edit_node();
 933         } else if (!strcasecmp(action, "display_netconf")) {
 934                 display_netconf();
 935         } else if (!strcasecmp(action, "display_confirm_unshare")) {
 936                 display_confirm_unshare();
 937         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
 938                 display_confirm_delete_node();
 939         } else if (!strcasecmp(action, "delete_node")) {
 940                 delete_node();
 941         } else if (!strcasecmp(action, "unshare")) {
 942                 unshare();
 943         } else if (!strcasecmp(action, "display_add_node")) {
 944                 display_add_node();
 945         } else if (!strcasecmp(action, "add_node")) {
 946                 add_node();
 947         } else if (!strcasecmp(action, "display_share")) {
 948                 display_share();
 949         } else if (!strcasecmp(action, "share")) {
 950                 share();
 951         } else if (!strcasecmp(action, "terminate_session")) {
 952                 slrp_highest();
 953                 terminate_session();
 954         } else if (!strcasecmp(action, "edit_me")) {
 955                 edit_me();
 956         } else if (!strcasecmp(action, "display_siteconfig")) {
 957                 display_siteconfig();
 958         } else if (!strcasecmp(action, "siteconfig")) {
 959                 siteconfig();
 960         } else if (!strcasecmp(action, "display_generic")) {
 961                 display_generic();
 962         } else if (!strcasecmp(action, "do_generic")) {
 963                 do_generic();
 964         } else if (!strcasecmp(action, "display_menubar")) {
 965                 display_menubar(1);
 966         } else if (!strcasecmp(action, "diagnostics")) {
 967                 printf("HTTP/1.0 200 OK\n");
 968                 output_headers(1);
 969
 970                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 971                 wprintf("You're in session %d<HR>\n", wc_session);
 972                 wprintf("Command: <BR><PRE>\n");
 973                 escputs(cmd);
 974                 wprintf("</PRE><HR>\n");
 975                 wprintf("Variables: <BR><PRE>\n");
 976                 dump_vars();
 977                 wprintf("</PRE><HR>\n");
 978                 wDumpContent(1);
 979         }
 980         /* When all else fais, display the main menu. */
 981         else {
 982                 display_main_menu();
 983         }
 984
 985         fflush(stdout);
 986         if (content != NULL) {
 987                 free(content);
 988                 content = NULL;
 989         }
 990         free_urls();
 991         if (upload_length > 0) {
 992                 free(upload);
 993                 upload_length = 0;
 994         }
 995 }
 996
 997 int main(int argc, char *argv[])
 998 {
 999
1000         char browser[256];
1001         int bd;
1002
1003         if (argc != 6) {
1004                 fprintf(stderr,
1005                         "webcit: usage error (argc must be 6, not %d)\n",
1006                         argc);
1007                 return 1;
1008         }
1009
1010         wc_session = atoi(argv[1]);
1011         defaulthost = argv[2];
1012         defaultport = argv[3];
1013
1014         strcpy(wc_username, "");
1015         strcpy(wc_password, "");
1016         strcpy(wc_roomname, "");
1017
1018         /* Clear out serv_info and temporarily set the value of serv_humannode
1019          * to a default value, because it'll be used in HTML page titles
1020          */
1021         memset(&serv_info, 0, sizeof(serv_info));
1022         strcpy(serv_info.serv_humannode, "WebCit");
1023
1024         strcpy(browser, argv[5]);
1025         bd = browser_braindamage_check(browser);
1026
1027         while (1) {
1028                 session_loop(argv[4], browser);
1029         }
1030 }