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
  35 struct webcontent *wlist = NULL;
  36 struct webcontent *wlast = NULL;
  37
  38 struct urlcontent *urlstrings = NULL;
  39
  40 static const char *defaulthost = DEFAULT_HOST;
  41 static const char *defaultport = DEFAULT_PORT;
  42
  43 int upload_length = 0;
  44 char *upload;
  45
  46
  47 void unescape_input(char *buf)
  48 {
  49         int a,b;
  50         char hex[3];
  51
  52         while ((isspace(buf[strlen(buf)-1]))&&(strlen(buf)>0))
  53                 buf[strlen(buf)-1] = 0;
  54
  55         for (a=0; a<strlen(buf); ++a) {
  56                 if (buf[a]=='+') buf[a]=' ';
  57                 if (buf[a]=='%') {
  58                         hex[0]=buf[a+1];
  59                         hex[1]=buf[a+2];
  60                         hex[2]=0;
  61                         sscanf(hex,"%02x",&b);
  62                         buf[a] = (char) b;
  63                         strcpy(&buf[a+1],&buf[a+3]);
  64                         }
  65                 }
  66
  67         }
  68
  69
  70 void addurls(char *url) {
  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) if (buf[a]=='=') b=a;
  83                 if (b<0) return;
  84                 buf[b]=0;
  85
  86                 u = (struct urlcontent *)malloc(sizeof(struct urlcontent));
  87                 u->next = urlstrings;
  88                 urlstrings = u;
  89                 strcpy(u->url_key, buf);
  90
  91                 /* now chop that part off */
  92                 for (a=0; a<=b; ++a) ++up;
  93
  94                 /* locate the & sign */
  95                 ptr = up;
  96                 b = strlen(up);
  97                 for (a=0; a<strlen(up); ++a) {
  98                         if (!strncmp(ptr,"&",1)) {
  99                                 b=a;
 100                                 break;
 101                                 }
 102                         ++ptr;
 103                         }
 104                 ptr = up;
 105                 for (a=0; a<b; ++a) ++ptr;
 106                 strcpy(ptr,"");
 107
 108                 u->url_data = malloc(strlen(up)+1);
 109                 strcpy(u->url_data, up);
 110                 u->url_data[b] = 0;
 111                 unescape_input(u->url_data);
 112                 up = ptr;
 113                 ++up;
 114                 }
 115         }
 116
 117 void free_urls(void) {
 118         struct urlcontent *u;
 119
 120         while (urlstrings != NULL) {
 121                 free(urlstrings->url_data);
 122                 u = urlstrings->next;
 123                 free(urlstrings);
 124                 urlstrings = u;
 125                 }
 126         }
 127
 128 /*
 129  * Diagnostic function to display the contents of all variables
 130  */
 131 void dump_vars(void) {
 132         struct urlcontent *u;
 133
 134         for (u = urlstrings; u != NULL; u = u->next) {
 135                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 136                 }
 137         }
 138
 139 char *bstr(char *key) {
 140         struct urlcontent *u;
 141
 142         for (u = urlstrings; u != NULL; u = u->next) {
 143                 if (!strcasecmp(u->url_key, key)) return(u->url_data);
 144                 }
 145         return("");
 146         }
 147
 148
 149 void wprintf(const char *format, ...) {
 150         va_list arg_ptr;
 151         struct webcontent *wptr;
 152
 153         wptr = (struct webcontent *)malloc(sizeof(struct webcontent));
 154         wptr->next = NULL;
 155         if (wlist == NULL) {
 156                 wlist = wptr;
 157                 wlast = wptr;
 158                 }
 159         else {
 160                 wlast->next = wptr;
 161                 wlast = wptr;
 162                 }
 163
 164         va_start(arg_ptr, format);
 165         vsprintf(wptr->w_data, format, arg_ptr);
 166         va_end(arg_ptr);
 167         }
 168
 169 int wContentLength(void) {
 170         struct webcontent *wptr;
 171         int len = 0;
 172
 173         for (wptr = wlist; wptr != NULL; wptr = wptr->next) {
 174                 len = len + strlen(wptr->w_data);
 175                 }
 176
 177         return(len);
 178         }
 179
 180 void wDumpContent(void) {
 181         struct webcontent *wptr;
 182
 183         printf("Content-type: text/html\n");
 184         printf("Content-length: %d\n", wContentLength());
 185         printf("\n");
 186
 187         while (wlist != NULL) {
 188                 fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
 189                 wptr = wlist->next;
 190                 free(wlist);
 191                 wlist = wptr;
 192                 }
 193         wlast = NULL;
 194         }
 195
 196
 197 void escputs1(char *strbuf, int nbsp)
 198 {
 199         int a;
 200
 201         for (a=0; a<strlen(strbuf); ++a) {
 202                 if (strbuf[a]=='<') wprintf("&lt;");
 203                 else if (strbuf[a]=='>') wprintf("&gt;");
 204                 else if (strbuf[a]=='&') wprintf("&amp;");
 205                 else if (strbuf[a]==34) wprintf("&quot;");
 206                 else if (strbuf[a]==LB) wprintf("<");
 207                 else if (strbuf[a]==RB) wprintf(">");
 208                 else if (strbuf[a]==QU) wprintf("\"");
 209                 else if ((strbuf[a]==32)&&(nbsp==1)) {
 210                         wprintf("&nbsp;");
 211                         }
 212                 else {
 213                         wprintf("%c", strbuf[a]);
 214                         }
 215                 }
 216         }
 217
 218 void escputs(char *strbuf)
 219 {
 220         escputs1(strbuf,0);
 221         }
 222
 223
 224
 225 char *urlesc(char *strbuf)
 226 {
 227         int a,b,c;
 228         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 229         static char outbuf[512];
 230
 231         strcpy(outbuf,"");
 232
 233         for (a=0; a<strlen(strbuf); ++a) {
 234                 c = 0;
 235                 for (b=0; b<strlen(ec); ++b) {
 236                         if (strbuf[a]==ec[b]) c=1;
 237                         }
 238                 b = strlen(outbuf);
 239                 if (c==1) sprintf(&outbuf[b],"%%%02x",strbuf[a]);
 240                 else sprintf(&outbuf[b],"%c",strbuf[a]);
 241                 }
 242         return(outbuf);
 243         }
 244
 245 void urlescputs(char *strbuf)
 246 {
 247         wprintf("%s",urlesc(strbuf));
 248         }
 249
 250
 251 void getz(char *buf) {
 252         bzero(buf, 256);
 253         if (fgets(buf, 256, stdin) == NULL) strcpy(buf, "");
 254         else {
 255                 while ((strlen(buf)>0)&&(!isprint(buf[strlen(buf)-1])))
 256                         buf[strlen(buf)-1] = 0;
 257                 }
 258         }
 259
 260 /*
 261  * Output all that important stuff that the browser will want to see
 262  *
 263  * If print_standard_html_head is nonzero, we also get some standard HTML
 264  * headers.  If it's set to 2, the session is considered to be closing.
 265  */
 266 void output_headers(int print_standard_html_head) {
 267
 268         static char *unset = "; expires=28-May-1971 18:10:00 GMT";
 269         char cookie[256];
 270
 271         printf("Server: %s\n", SERVER);
 272         printf("Connection: close\n");
 273
 274         stuff_to_cookie(cookie, wc_session, wc_username, wc_password, wc_roomname);
 275         if (print_standard_html_head==2) {
 276                 printf("X-WebCit-Session: close\n");
 277                 printf("Set-cookie: webcit=%s\n", unset);
 278                 }
 279         else {
 280                 printf("Set-cookie: webcit=%s\n", cookie);
 281                 }
 282
 283         if (print_standard_html_head > 0) {
 284                 wprintf("<HTML><HEAD><TITLE>");
 285                 escputs("WebCit");       /* FIX -- add BBS name here */
 286                 wprintf("</TITLE></HEAD>");
 287                 if (ExpressMessages != NULL) {
 288                         wprintf("<SCRIPT language=\"javascript\">\n");
 289                         wprintf("function ExpressMessage() {\n");
 290                         wprintf(" alert(\"");
 291                         escputs(ExpressMessages);
 292                         wprintf("\")\n");
 293                         wprintf(" }\n </SCRIPT>\n");
 294                         }
 295                 wprintf("<BODY ");
 296                 if (ExpressMessages != NULL) {
 297                         wprintf("onload=\"ExpressMessage()\" ");
 298                         free(ExpressMessages);
 299                         ExpressMessages = NULL;
 300                         }
 301                 wprintf("BACKGROUND=\"/image&name=background\" TEXT=\"#000000\" LINK=\"#004400\">\n");
 302                 }
 303
 304         }
 305
 306
 307
 308
 309 void check_for_express_messages() {
 310         char buf[256];
 311
 312         serv_puts("PEXP");
 313         serv_gets(buf);
 314         if (buf[0]=='1') {
 315                 while (serv_gets(buf), strcmp(buf, "000")) {
 316                         if (ExpressMessages == NULL) {
 317                                 ExpressMessages = malloc(strlen(buf) + 4);
 318                                 strcpy(ExpressMessages, "");
 319                                 }
 320                         else {
 321                                 ExpressMessages = realloc(ExpressMessages,
 322                                  (strlen(ExpressMessages) + strlen(buf) + 4) );
 323                                 }
 324                         strcat(ExpressMessages, buf);
 325                         strcat(ExpressMessages, "\\n");
 326                         }
 327                 }
 328         }
 329
 330
 331
 332
 333 void output_static(char *what) {
 334         char buf[256];
 335         FILE *fp;
 336         struct stat statbuf;
 337         off_t bytes;
 338
 339         sprintf(buf, "static/%s", what);
 340         fp = fopen(buf, "rb");
 341         if (fp == NULL) {
 342                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 343                 output_headers(0);
 344                 printf("Content-Type: text/plain\n");
 345                 sprintf(buf, "%s: %s\n", what, strerror(errno));
 346                 printf("Content-length: %d\n", strlen(buf));
 347                 printf("\n");
 348                 fwrite(buf, strlen(buf), 1, stdout);
 349                 }
 350         else {
 351                 printf("HTTP/1.0 200 OK\n");
 352                 output_headers(0);
 353
 354                 if (!strncasecmp(&what[strlen(what)-4], ".gif", 4))
 355                         printf("Content-type: image/gif\n");
 356                 else if (!strncasecmp(&what[strlen(what)-4], ".jpg", 4))
 357                         printf("Content-type: image/jpeg\n");
 358                 else if (!strncasecmp(&what[strlen(what)-5], ".html", 5))
 359                         printf("Content-type: text/html\n");
 360                 else
 361                         printf("Content-type: application/octet-stream\n");
 362
 363                 fstat(fileno(fp), &statbuf);
 364                 bytes = statbuf.st_size;
 365                 printf("Content-length: %ld\n", (long)bytes);
 366                 printf("\n");
 367                 while (bytes--) {
 368                         putc(getc(fp), stdout);
 369                         }
 370                 fflush(stdout);
 371                 fclose(fp);
 372                 }
 373         }
 374
 375 void output_image() {
 376         char buf[256];
 377         char xferbuf[4096];
 378         off_t bytes;
 379         off_t thisblock;
 380         off_t accomplished = 0L;
 381
 382
 383         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 384         serv_gets(buf);
 385         if (buf[0]=='2') {
 386                 bytes = extract_long(&buf[4], 0);
 387                 printf("HTTP/1.0 200 OK\n");
 388                 output_headers(0);
 389                 printf("Content-type: image/gif\n");
 390                 printf("Content-length: %ld\n", bytes);
 391                 printf("\n");
 392
 393                 while (bytes > (off_t)0) {
 394                         thisblock = (off_t)sizeof(xferbuf);
 395                         if (thisblock > bytes) thisblock = bytes;
 396                         serv_printf("READ %ld|%ld", accomplished, thisblock);
 397                         serv_gets(buf);
 398                         if (buf[0]=='6') thisblock = extract_long(&buf[4],0);
 399                         serv_read(xferbuf, (int)thisblock);
 400                         fwrite(xferbuf, thisblock, 1, stdout);
 401                         bytes = bytes - thisblock;
 402                         accomplished = accomplished + thisblock;
 403                         }
 404                 fflush(stdout);
 405                 serv_puts("CLOS");
 406                 serv_gets(buf);
 407                 }
 408         else {
 409                 printf("HTTP/1.0 404 %s\n", strerror(errno));
 410                 output_headers(0);
 411                 printf("Content-Type: text/plain\n");
 412                 sprintf(buf, "Error retrieving image\n");
 413                 printf("Content-length: %d\n", strlen(buf));
 414                 printf("\n");
 415                 fwrite(buf, strlen(buf), 1, stdout);
 416                 }
 417
 418         }
 419
 420
 421 /*
 422  * Convenience functions to display a page containing only a string
 423  */
 424 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext) {
 425         printf("HTTP/1.0 200 OK\n");
 426         output_headers(1);
 427         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=%s><TR><TD>", titlebarcolor);
 428         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 429         wprintf("<B>%s</B>\n", titlebarmsg);
 430         wprintf("</FONT></TD></TR></TABLE><BR>\n");
 431         escputs(messagetext);
 432         wprintf("</BODY></HTML>\n");
 433         wDumpContent();
 434         }
 435
 436 void display_error(char *errormessage) {
 437         convenience_page("770000", "Error", errormessage);
 438         }
 439
 440 void display_success(char *successmessage) {
 441         convenience_page("007700", "OK", successmessage);
 442         }
 443
 444
 445
 446 void extract_action(char *actbuf, char *cmdbuf) {
 447         int i;
 448
 449         strcpy(actbuf, cmdbuf);
 450         if (!strncasecmp(actbuf, "GET /", 5)) strcpy(actbuf, &actbuf[5]);
 451         if (!strncasecmp(actbuf, "PUT /", 5)) strcpy(actbuf, &actbuf[5]);
 452         if (!strncasecmp(actbuf, "POST /", 6)) strcpy(actbuf, &actbuf[6]);
 453
 454         for (i=0; i<strlen(actbuf); ++i) {
 455                 if (actbuf[i]==' ') { actbuf[i]=0; i=0; }
 456                 if (actbuf[i]=='/') { actbuf[i]=0; i=0; }
 457                 if (actbuf[i]=='?') { actbuf[i]=0; i=0; }
 458                 if (actbuf[i]=='&') { actbuf[i]=0; i=0; }
 459                 }
 460         }
 461
 462
 463 void upload_handler(char *name, char *filename, char *encoding,
 464                         void *content, size_t length) {
 465
 466         fprintf(stderr, "UPLOAD HANDLER CALLED\n");
 467         fprintf(stderr, "    name = %s\n", name);
 468         fprintf(stderr, "filename = %s\n", filename);
 469         fprintf(stderr, "encoding = %s\n", encoding);
 470         fprintf(stderr, "  length = %d\n", length);
 471
 472         if (strlen(name)>0) {
 473                 upload = malloc(length);
 474                 if (upload != NULL) {
 475                         upload_length = length;
 476                         memcpy(upload, content, length);
 477                         }
 478                 }
 479
 480         }
 481
 482
 483 void session_loop(void) {
 484         char cmd[256];
 485         char action[256];
 486         char buf[256];
 487         int a, b;
 488         int ContentLength = 0;
 489         char ContentType[512];
 490         char *content;
 491
 492         /* We stuff these with the values coming from the client cookies,
 493          * so we can use them to reconnect a timed out session if we have to.
 494          */
 495         char c_host[256];
 496         char c_port[256];
 497         char c_username[256];
 498         char c_password[256];
 499         char c_roomname[256];
 500         char cookie[256];
 501
 502         strcpy(c_host, defaulthost);
 503         strcpy(c_port, defaultport);
 504         strcpy(c_username, "");
 505         strcpy(c_password, "");
 506         strcpy(c_roomname, "");
 507
 508         upload_length = 0;
 509         upload = NULL;
 510
 511         getz(cmd);
 512         extract_action(action, cmd);
 513
 514         do {
 515                 getz(buf);
 516
 517                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 518                         strcpy(cookie, &buf[15]);
 519                         cookie_to_stuff(cookie, NULL,
 520                                         c_username, c_password, c_roomname);
 521                         }
 522
 523                 if (!strncasecmp(buf, "Content-length: ", 16)) {
 524                         ContentLength = atoi(&buf[16]);
 525                         }
 526                 if (!strncasecmp(buf, "Content-type: ", 14)) {
 527                         strcpy(ContentType, &buf[14]);
 528                         }
 529                 } while(strlen(buf)>0);
 530
 531         ++TransactionCount;
 532
 533         if (ContentLength > 0) {
 534                 content = malloc(ContentLength+1);
 535                 fread(content, ContentLength, 1, stdin);
 536
 537                 content[ContentLength] = 0;
 538
 539                 if (!strncasecmp(ContentType,
 540                    "application/x-www-form-urlencoded", 33)) {
 541                         addurls(content);
 542                         }
 543                 else if (!strncasecmp(ContentType, "multipart", 9)) {
 544                         mime_parser(content, ContentLength, ContentType,
 545                                         *upload_handler);
 546                         }
 547                 }
 548         else {
 549                 content = NULL;
 550                 }
 551
 552         /* If there are variables in the URL, we must grab them now */
 553         for (a=0; a<strlen(cmd); ++a) if ((cmd[a]=='?')||(cmd[a]=='&')) {
 554                 for (b=a; b<strlen(cmd); ++b) if (isspace(cmd[b])) cmd[b]=0;
 555                 addurls(&cmd[a+1]);
 556                 cmd[a] = 0;
 557                 }
 558
 559         /*
 560          * If we're not connected to a Citadel server, try to hook up the
 561          * connection now.  Preference is given to the host and port specified
 562          * by browser cookies, if cookies have been supplied.
 563          */
 564         if (!connected) {
 565                 if (strlen(bstr("host"))>0) strcpy(c_host, bstr("host"));
 566                 if (strlen(bstr("port"))>0) strcpy(c_port, bstr("port"));
 567                 serv_sock = connectsock(c_host, c_port, "tcp");
 568                 connected = 1;
 569                 serv_gets(buf); /* get the server welcome message */
 570                 get_serv_info();
 571                 }
 572
 573         check_for_express_messages();
 574
 575         /*
 576          * If we're not logged in, but we have username and password cookies
 577          * supplied by the browser, try using them to log in.
 578          */
 579         if ((!logged_in)&&(strlen(c_username)>0)&&(strlen(c_password)>0)) {
 580                 serv_printf("USER %s", c_username);
 581                 serv_gets(buf);
 582                 if (buf[0]=='3') {
 583                         serv_printf("PASS %s", c_password);
 584                         serv_gets(buf);
 585                         if (buf[0]=='2') {
 586                                 become_logged_in(c_username, c_password, buf);
 587                                 }
 588                         }
 589                 }
 590
 591         /*
 592          * If we don't have a current room, but a cookie specifying the
 593          * current room is supplied, make an effort to go there.
 594          */
 595         if ((strlen(wc_roomname)==0) && (strlen(c_roomname)>0) ) {
 596                 serv_printf("GOTO %s", c_roomname);
 597                 serv_gets(buf);
 598                 if (buf[0]=='2') {
 599                         strcpy(wc_roomname, c_roomname);
 600                         }
 601                 }
 602
 603         if (!strcasecmp(action, "static")) {
 604                 strcpy(buf, &cmd[12]);
 605                 for (a=0; a<strlen(buf); ++a) if (isspace(buf[a])) buf[a]=0;
 606                 output_static(buf);
 607                 }
 608
 609         else if (!strcasecmp(action, "image")) {
 610                 output_image();
 611                 }
 612
 613         else if ((!logged_in)&&(!strcasecmp(action, "login"))) {
 614                 do_login();
 615                 }
 616
 617         else if (!logged_in) {
 618                 display_login(NULL);
 619                 }
 620
 621         /* Various commands... */
 622
 623         else if (!strcasecmp(action, "do_welcome")) {
 624                 do_welcome();
 625                 }
 626
 627         else if (!strcasecmp(action, "display_main_menu")) {
 628                 display_main_menu();
 629                 }
 630
 631         else if (!strcasecmp(action, "advanced")) {
 632                 display_advanced_menu();
 633                 }
 634
 635         else if (!strcasecmp(action, "whobbs")) {
 636                 whobbs();
 637                 }
 638
 639         else if (!strcasecmp(action, "knrooms")) {
 640                 list_all_rooms_by_floor();
 641                 }
 642
 643         else if (!strcasecmp(action, "gotonext")) {
 644                 slrp_highest();
 645                 gotonext();
 646                 }
 647
 648         else if (!strcasecmp(action, "skip")) {
 649                 gotonext();
 650                 }
 651
 652         else if (!strcasecmp(action, "ungoto")) {
 653                 ungoto();
 654                 }
 655
 656         else if (!strcasecmp(action, "dotgoto")) {
 657                 slrp_highest();
 658                 gotoroom(bstr("room"), 1);
 659                 }
 660
 661         else if (!strcasecmp(action, "termquit")) {
 662                 do_logout();
 663                 }
 664
 665         else if (!strcasecmp(action, "readnew")) {
 666                 readloop("readnew");
 667                 }
 668
 669         else if (!strcasecmp(action, "readold")) {
 670                 readloop("readold");
 671                 }
 672
 673         else if (!strcasecmp(action, "readfwd")) {
 674                 readloop("readfwd");
 675                 }
 676
 677         else if (!strcasecmp(action, "display_enter")) {
 678                 display_enter();
 679                 }
 680
 681         else if (!strcasecmp(action, "post")) {
 682                 post_message();
 683                 }
 684
 685         else if (!strcasecmp(action, "confirm_delete_msg")) {
 686                 confirm_delete_msg();
 687                 }
 688
 689         else if (!strcasecmp(action, "delete_msg")) {
 690                 delete_msg();
 691                 }
 692
 693         else if (!strcasecmp(action, "confirm_move_msg")) {
 694                 confirm_move_msg();
 695                 }
 696
 697         else if (!strcasecmp(action, "move_msg")) {
 698                 move_msg();
 699                 }
 700
 701         else if (!strcasecmp(action, "userlist")) {
 702                 userlist();
 703                 }
 704
 705         else if (!strcasecmp(action, "showuser")) {
 706                 showuser();
 707                 }
 708
 709         else if (!strcasecmp(action, "display_page")) {
 710                 display_page();
 711                 }
 712
 713         else if (!strcasecmp(action, "page_user")) {
 714                 page_user();
 715                 }
 716
 717         else if (!strcasecmp(action, "chat")) {
 718                 do_chat();
 719                 }
 720
 721         else if (!strcasecmp(action, "display_private")) {
 722                 display_private("", 0);
 723                 }
 724
 725         else if (!strcasecmp(action, "goto_private")) {
 726                 goto_private();
 727                 }
 728
 729         else if (!strcasecmp(action, "zapped_list")) {
 730                 zapped_list();
 731                 }
 732
 733         else if (!strcasecmp(action, "display_zap")) {
 734                 display_zap();
 735                 }
 736
 737         else if (!strcasecmp(action, "zap")) {
 738                 zap();
 739                 }
 740
 741         else if (!strcasecmp(action, "display_entroom")) {
 742                 display_entroom();
 743                 }
 744
 745         else if (!strcasecmp(action, "entroom")) {
 746                 entroom();
 747                 }
 748
 749         else if (!strcasecmp(action, "display_editroom")) {
 750                 display_editroom();
 751                 }
 752
 753         else if (!strcasecmp(action, "editroom")) {
 754                 editroom();
 755                 }
 756
 757         else if (!strcasecmp(action, "display_editinfo")) {
 758                 display_edit("Room info", "EINF 0", "RINF", "/editinfo");
 759                 }
 760
 761         else if (!strcasecmp(action, "editinfo")) {
 762                 save_edit("Room info", "EINF 1", 1);
 763                 }
 764
 765         else if (!strcasecmp(action, "display_editbio")) {
 766                 sprintf(buf, "RBIO %s", wc_username);
 767                 display_edit("Your bio", "NOOP", buf, "editbio");
 768                 }
 769
 770         else if (!strcasecmp(action, "editbio")) {
 771                 save_edit("Your bio", "EBIO", 0);
 772                 }
 773
 774         else if (!strcasecmp(action, "confirm_delete_room")) {
 775                 confirm_delete_room();
 776                 }
 777
 778         else if (!strcasecmp(action, "delete_room")) {
 779                 delete_room();
 780                 }
 781
 782         else if (!strcasecmp(action, "validate")) {
 783                 validate();
 784                 }
 785
 786         else if (!strcasecmp(action, "display_editpic")) {
 787                 display_graphics_upload("your photo",
 788                                         "UIMG 0|_userpic_",
 789                                         "/editpic");
 790                 }
 791
 792         else if (!strcasecmp(action, "editpic")) {
 793                 do_graphics_upload("UIMG 1|_userpic_");
 794                 }
 795
 796         else if (!strcasecmp(action, "display_editroompic")) {
 797                 display_graphics_upload("the graphic for this room",
 798                                         "UIMG 0|_roompic_",
 799                                         "/editroompic");
 800                 }
 801
 802         else if (!strcasecmp(action, "editroompic")) {
 803                 do_graphics_upload("UIMG 1|_roompic_");
 804                 }
 805
 806         else if (!strcasecmp(action, "select_floor_to_edit_pic")) {
 807                 select_floor_to_edit_pic();
 808                 }
 809
 810         else if (!strcasecmp(action, "display_editfloorpic")) {
 811                 sprintf(buf, "UIMG 0|_floorpic_|%s",
 812                         bstr("which_floor"));
 813                 display_graphics_upload("the graphic for this floor",
 814                                         buf,
 815                                         "/editfloorpic");
 816                 }
 817
 818         else if (!strcasecmp(action, "editfloorpic")) {
 819                 sprintf(buf, "UIMG 1|_floorpic_|%s",
 820                         bstr("which_floor"));
 821                 do_graphics_upload(buf);
 822                 }
 823
 824         else if (!strcasecmp(action, "display_reg")) {
 825                 display_reg(0);
 826                 }
 827
 828         else if (!strcasecmp(action, "register")) {
 829                 register_user();
 830                 }
 831
 832         else if (!strcasecmp(action, "display_changepw")) {
 833                 display_changepw();
 834                 }
 835
 836         else if (!strcasecmp(action, "changepw")) {
 837                 changepw();
 838                 }
 839
 840         else if (!strcasecmp(action, "display_edit_node")) {
 841                 display_edit_node();
 842                 }
 843
 844         else if (!strcasecmp(action, "display_netconf")) {
 845                 display_netconf();
 846                 }
 847
 848         else if (!strcasecmp(action, "display_confirm_unshare")) {
 849                 display_confirm_unshare();
 850                 }
 851
 852         else if (!strcasecmp(action, "display_confirm_delete_node")) {
 853                 display_confirm_delete_node();
 854                 }
 855
 856         else if (!strcasecmp(action, "delete_node")) {
 857                 delete_node();
 858                 }
 859
 860         else if (!strcasecmp(action, "unshare")) {
 861                 unshare();
 862                 }
 863
 864         else if (!strcasecmp(action, "display_add_node")) {
 865                 display_add_node();
 866                 }
 867
 868         else if (!strcasecmp(action, "add_node")) {
 869                 add_node();
 870                 }
 871
 872         else if (!strcasecmp(action, "display_share")) {
 873                 display_share();
 874                 }
 875
 876         else if (!strcasecmp(action, "share")) {
 877                 share();
 878                 }
 879
 880         else if (!strcasecmp(action, "terminate_session")) {
 881                 terminate_session();
 882                 }
 883
 884         else if (!strcasecmp(action, "edit_me")) {
 885                 edit_me();
 886                 }
 887
 888         else if (!strcasecmp(action, "display_siteconfig")) {
 889                 display_siteconfig();
 890                 }
 891
 892         else if (!strcasecmp(action, "siteconfig")) {
 893                 siteconfig();
 894                 }
 895
 896         else if (!strcasecmp(action, "display_generic")) {
 897                 display_generic();
 898                 }
 899
 900         else if (!strcasecmp(action, "do_generic")) {
 901                 do_generic();
 902                 }
 903
 904         /* When all else fails... */
 905         else {
 906                 printf("HTTP/1.0 200 OK\n");
 907                 output_headers(1);
 908
 909                 wprintf("TransactionCount is %d<BR>\n", TransactionCount);
 910                 wprintf("You're in session %d<HR>\n", wc_session);
 911                 wprintf("Command: <BR><PRE>\n");
 912                 escputs(cmd);
 913                 wprintf("</PRE><HR>\n");
 914                 wprintf("Variables: <BR><PRE>\n");
 915                 dump_vars();
 916                 wprintf("</PRE><HR>\n");
 917                 wprintf("</BODY></HTML>\n");
 918                 wDumpContent();
 919                 }
 920
 921         fflush(stdout);
 922         if (content != NULL) {
 923                 free(content);
 924                 content = NULL;
 925                 }
 926         free_urls();
 927         if (upload_length > 0) {
 928                 free(upload);
 929                 upload_length = 0;
 930                 }
 931         }
 932
 933 int main(int argc, char *argv[]) {
 934
 935         if (argc < 2 || argc > 4) {
 936                 fprintf(stderr,
 937                         "webcit: usage: webcit <session_id> [host [port]]\n");
 938                 return 1;
 939                 }
 940
 941         wc_session = atoi(argv[1]);
 942
 943         if (argc > 2) {
 944                 defaulthost = argv[2];
 945                 if (argc > 3)
 946                         defaultport = argv[3];
 947                 }
 948
 949         strcpy(wc_username, "");
 950         strcpy(wc_password, "");
 951         strcpy(wc_roomname, "");
 952
 953         while (1) {
 954                 session_loop();
 955                 }
 956         }