webcit/paging.c

   1 /*
   2  * $Id$
   3  */
   4 /**
   5  * \defgroup PageFunc Functions which implement the chat and paging facilities.
   6  * \ingroup ClientPower
   7  */
   8 /*@{*/
   9 #include "webcit.h"
  10
  11 /**
  12  * \brief display the form for paging (x-messaging) another user
  13  */
  14 void display_page(void)
  15 {
  16         char recp[SIZ];
  17
  18         strcpy(recp, bstr("recp"));
  19
  20         output_headers(1, 1, 2, 0, 0, 0);
  21         wprintf("<div id=\"banner\">\n");
  22         wprintf("<h1>");
  23         wprintf(_("Send instant message"));
  24         wprintf("</h1>");
  25         wprintf("</div>\n");
  26
  27         wprintf("<div id=\"content\" class=\"service\">\n");
  28
  29         wprintf("<div class=\"fix_scrollbar_bug\">"
  30                 "<table class=\"paging_background\"><tr><td>\n");
  31
  32         wprintf(_("Send an instant message to: "));
  33         escputs(recp);
  34         wprintf("<br>\n");
  35
  36         wprintf("<FORM METHOD=\"POST\" action=\"page_user\">\n");
  37         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
  38         wprintf("<input type=\"hidden\" name=\"template\" value=\"who\">\n");
  39
  40         wprintf("<TABLE border=0 width=100%%><TR><TD>\n");
  41
  42         wprintf("<INPUT TYPE=\"hidden\" NAME=\"recp\" VALUE=\"");
  43         escputs(recp);
  44         wprintf("\">\n");
  45
  46         wprintf(_("Enter message text:"));
  47         wprintf("<br />");
  48
  49         wprintf("<TEXTAREA NAME=\"msgtext\" wrap=soft ROWS=5 COLS=40 "
  50                 "WIDTH=40></TEXTAREA>\n");
  51
  52         wprintf("</TD></TR></TABLE><br />\n");
  53
  54         wprintf("<INPUT TYPE=\"submit\" NAME=\"send_button\" VALUE=\"%s\">", _("Send message"));
  55         wprintf("<br /><a href=\"javascript:window.close();\"%s</A>\n", _("Cancel"));
  56
  57         wprintf("</FORM></CENTER>\n");
  58         wprintf("</td></tr></table></div>\n");
  59         wDumpContent(1);
  60 }
  61
  62 /**
  63  * \brief page another user
  64  */
  65 void page_user(void)
  66 {
  67         char recp[256];
  68         char buf[256];
  69
  70         safestrncpy(recp, bstr("recp"), sizeof recp);
  71
  72         if (!havebstr("send_button")) {
  73                 safestrncpy(WC->ImportantMessage,
  74                         _("Message was not sent."),
  75                         sizeof WC->ImportantMessage
  76                 );
  77         } else {
  78                 serv_printf("SEXP %s|-", recp);
  79                 serv_getln(buf, sizeof buf);
  80
  81                 if (buf[0] == '4') {
  82                         text_to_server(bstr("msgtext"));
  83                         serv_puts("000");
  84                         stresc(buf, 256, recp, 0, 0);
  85                         snprintf(WC->ImportantMessage,
  86                                 sizeof WC->ImportantMessage,
  87                                 "%s%s.",
  88                                 _("Message has been sent to "),
  89                                 buf
  90                         );
  91                 }
  92                 else {
  93                         safestrncpy(WC->ImportantMessage, &buf[4], sizeof WC->ImportantMessage);
  94                 }
  95         }
  96
  97         url_do_template();
  98 }
  99
 100
 101
 102 /**
 103  * \brief multiuser chat
 104  */
 105 void do_chat(void)
 106 {
 107         char buf[SIZ];
 108
 109         /** First, check to make sure we're still allowed in this room. */
 110         serv_printf("GOTO %s", WC->wc_roomname);
 111         serv_getln(buf, sizeof buf);
 112         if (buf[0] != '2') {
 113                 smart_goto("_BASEROOM_");
 114                 return;
 115         }
 116
 117         /**
 118          * If the chat socket is still open from a previous chat,
 119          * close it -- because it might be stale or in the wrong room.
 120          */
 121         if (WC->chat_sock < 0) {
 122                 close(WC->chat_sock);
 123                 WC->chat_sock = (-1);
 124         }
 125
 126         /**
 127          * WebCit Chat works by having transmit, receive, and refresh
 128          * frames.  Load the frameset.  (This isn't AJAX but the headers
 129          * output by begin_ajax_response() happen to be the ones we need.)
 130          */
 131         begin_ajax_response();
 132         do_template("chatframeset", NULL);
 133         end_ajax_response();
 134         return;
 135 }
 136
 137
 138 /**
 139  * \brief display page popup
 140  * If there are instant messages waiting, and we notice that we haven't checked them in
 141  * a while, it probably means that we need to open the instant messenger window.
 142  */
 143 void page_popup(void)
 144 {
 145         int len;
 146         char buf[SIZ];
 147
 148         /** JavaScript function to alert the user that popups are probably blocked */
 149         wprintf("<script type=\"text/javascript\">      "
 150                 "function PopUpFailed() {       "
 151                 " alert(\"%s\");        "
 152                 "}      "
 153                 "</script>\n",
 154                 _("You have one or more instant messages waiting, but the Citadel Instant Messenger "
 155                   "window failed to open.  This is probably because you have a popup blocker "
 156                   "installed.  Please configure your popup blocker to allow popups from this site "
 157                   "if you wish to receive instant messages.")
 158         );
 159
 160         /** First, do the check as part of our page load. */
 161         serv_puts("NOOP");
 162         len = serv_getln(buf, sizeof buf);
 163         if ((len >= 3) && (buf[3] == '*')) {
 164                 if ((time(NULL) - WC->last_pager_check) > 60) {
 165                         wprintf("<script type=\"text/javascript\">"
 166                                 " var oWin = window.open('static/instant_messenger.html', "
 167                                 " 'CTDL_MESSENGER', 'width=700,height=400');    "
 168                                 " if (oWin==null || typeof(oWin)==\"undefined\") {      "
 169                                 "  PopUpFailed();       "
 170                                 " }     "
 171                                 "</script>"
 172                         );
 173                 }
 174         }
 175
 176         /** Then schedule it to happen again a minute from now if the user is idle. */
 177         wprintf("<script type=\"text/javascript\">      "
 178                 " function HandleSslp(sslg_xmlresponse) {       "
 179                 "  sslg_response = sslg_xmlresponse.responseText.substr(0, 1);  "
 180                 "  if (sslg_response == 'Y') {  "
 181                 "   var oWin = window.open('static/instant_messenger.html', 'CTDL_MESSENGER',   "
 182                 "    'width=700,height=400');   "
 183                 "   if (oWin==null || typeof(oWin)==\"undefined\") {    "
 184                 "    PopUpFailed();     "
 185                 "   }   "
 186                 "  }    "
 187                 " }     "
 188                 " function CheckPager() {       "
 189                 "  new Ajax.Request('sslg', { method: 'get', parameters: CtdlRandomString(),    "
 190                 "   onSuccess: HandleSslp } );  "
 191                 " }     "
 192                 " new PeriodicalExecuter(CheckPager, 30);       "
 193                 "</script>      "
 194         );
 195 }
 196
 197
 198
 199 /**
 200  * \brief Support function for chat
 201  * make sure the chat socket is connected
 202  * and in chat mode.
 203  */
 204 int setup_chat_socket(void) {
 205         char buf[SIZ];
 206         int i;
 207         int good_chatmode = 0;
 208
 209         if (WC->chat_sock < 0) {
 210
 211                 if (!strcasecmp(ctdlhost, "uds")) {
 212                         /** unix domain socket */
 213                         sprintf(buf, "%s/citadel.socket", ctdlport);
 214                         WC->chat_sock = uds_connectsock(buf);
 215                 }
 216                 else {
 217                         /** tcp socket */
 218                         WC->chat_sock = tcp_connectsock(ctdlhost, ctdlport);
 219                 }
 220
 221                 if (WC->chat_sock < 0) {
 222                         return(errno);
 223                 }
 224
 225                 /** Temporarily swap the serv and chat sockets during chat talk */
 226                 i = WC->serv_sock;
 227                 WC->serv_sock = WC->chat_sock;
 228                 WC->chat_sock = i;
 229
 230                 serv_getln(buf, sizeof buf);
 231                 if (buf[0] == '2') {
 232                         serv_printf("USER %s", WC->wc_username);
 233                         serv_getln(buf, sizeof buf);
 234                         if (buf[0] == '3') {
 235                                 serv_printf("PASS %s", WC->wc_password);
 236                                 serv_getln(buf, sizeof buf);
 237                                 if (buf[0] == '2') {
 238                                         serv_printf("GOTO %s", WC->wc_roomname);
 239                                         serv_getln(buf, sizeof buf);
 240                                         if (buf[0] == '2') {
 241                                                 serv_puts("CHAT");
 242                                                 serv_getln(buf, sizeof buf);
 243                                                 if (buf[0] == '8') {
 244                                                         good_chatmode = 1;
 245                                                 }
 246                                         }
 247                                 }
 248                         }
 249                 }
 250
 251                 /** Unswap the sockets. */
 252                 i = WC->serv_sock;
 253                 WC->serv_sock = WC->chat_sock;
 254                 WC->chat_sock = i;
 255
 256                 if (!good_chatmode) close(WC->serv_sock);
 257
 258         }
 259         return(0);
 260 }
 261
 262
 263
 264 /**
 265  * \brief Receiving side of the chat window.
 266  * This is implemented in a
 267  * tiny hidden IFRAME that just does JavaScript writes to
 268  * other frames whenever it refreshes and finds new data.
 269  */
 270 void chat_recv(void) {
 271         int i;
 272         struct pollfd pf;
 273         int got_data = 0;
 274         int end_chat_now = 0;
 275         char buf[SIZ];
 276         char cl_user[SIZ];
 277         char cl_text[SIZ];
 278         char *output_data = NULL;
 279
 280         output_headers(0, 0, 0, 0, 0, 0);
 281
 282         hprintf("Content-type: text/html; charset=utf-8\r\n");
 283         wprintf("<html>\n"
 284                 "<head>\n"
 285                 "<meta http-equiv=\"refresh\" content=\"3\" />\n"
 286                 "</head>\n"
 287
 288                 "<body bgcolor=\"#FFFFFF\">\n"
 289         );
 290
 291         if (setup_chat_socket() != 0) {
 292                 wprintf(_("An error occurred while setting up the chat socket."));
 293                 wprintf("</BODY></HTML>\n");
 294                 wDumpContent(0);
 295                 return;
 296         }
 297
 298         /**
 299          * See if there is any chat data waiting.
 300          */
 301         output_data = strdup("");
 302         do {
 303                 got_data = 0;
 304                 pf.fd = WC->chat_sock;
 305                 pf.events = POLLIN;
 306                 pf.revents = 0;
 307                 if ((poll(&pf, 1, 1) > 0) && (pf.revents & POLLIN)) {
 308                         ++got_data;
 309
 310                         /** Temporarily swap the serv and chat sockets during chat talk */
 311                         i = WC->serv_sock;
 312                         WC->serv_sock = WC->chat_sock;
 313                         WC->chat_sock = i;
 314
 315                         serv_getln(buf, sizeof buf);
 316
 317                         if (!strcmp(buf, "000")) {
 318                                 strcpy(buf, ":|");
 319                                 strcat(buf, _("Now exiting chat mode."));
 320                                 end_chat_now = 1;
 321                         }
 322
 323                         /** Unswap the sockets. */
 324                         i = WC->serv_sock;
 325                         WC->serv_sock = WC->chat_sock;
 326                         WC->chat_sock = i;
 327
 328                         /** Append our output data */
 329                         output_data = realloc(output_data, strlen(output_data) + strlen(buf) + 4);
 330                         strcat(output_data, buf);
 331                         strcat(output_data, "\n");
 332                 }
 333
 334         } while ( (got_data) && (!end_chat_now) );
 335
 336         if (end_chat_now) {
 337                 close(WC->chat_sock);
 338                 WC->chat_sock = (-1);
 339                 wprintf("<img src=\"static/blank.gif\" onLoad=\"parent.window.close();\">\n");
 340         }
 341
 342         if (!IsEmptyStr(output_data)) {
 343                 int len;
 344                 len = strlen(output_data);
 345                 if (output_data[len-1] == '\n') {
 346                         output_data[len-1] = 0;
 347                 }
 348
 349                 /** Output our fun to the other frame. */
 350                 wprintf("<img src=\"static/blank.gif\" WIDTH=1 HEIGHT=1\n"
 351                         "onLoad=\" \n"
 352                 );
 353
 354                 for (i=0; i<num_tokens(output_data, '\n'); ++i) {
 355                         extract_token(buf, output_data, i, '\n', sizeof buf);
 356                         extract_token(cl_user, buf, 0, '|', sizeof cl_user);
 357                         extract_token(cl_text, buf, 1, '|', sizeof cl_text);
 358
 359                         if (strcasecmp(cl_text, "NOOP")) {
 360
 361                                 wprintf("parent.chat_transcript.document.write('");
 362
 363                                 if (strcasecmp(cl_user, WC->last_chat_user)) {
 364                                         wprintf("<TABLE border=0 WIDTH=100%% "
 365                                                 "CELLSPACING=1 CELLPADDING=0 "
 366                                                 "BGCOLOR=&quot;#FFFFFF&quot;>"
 367                                                 "<TR><TD></TR></TD></TABLE>"
 368                                         );
 369
 370                                 }
 371
 372                                 wprintf("<TABLE border=0 WIDTH=100%% "
 373                                         "CELLSPACING=0 CELLPADDING=0 "
 374                                         "BGCOLOR=&quot;#EEEEEE&quot;>");
 375
 376                                 wprintf("<TR><TD>");
 377
 378                                 if (!strcasecmp(cl_user, ":")) {
 379                                         wprintf("<I>");
 380                                 }
 381
 382                                 if (strcasecmp(cl_user, WC->last_chat_user)) {
 383                                         wprintf("<B>");
 384
 385                                         if (!strcasecmp(cl_user, WC->wc_fullname)) {
 386                                                 wprintf("<FONT COLOR=&quot;#FF0000&quot;>");
 387                                         }
 388                                         else {
 389                                                 wprintf("<FONT COLOR=&quot;#0000FF&quot;>");
 390                                         }
 391                                         jsescputs(cl_user);
 392
 393                                         wprintf("</FONT>: </B>");
 394                                 }
 395                                 else {
 396                                         wprintf("&nbsp;&nbsp;&nbsp;");
 397                                 }
 398                                 jsescputs(cl_text);
 399                                 if (!strcasecmp(cl_user, ":")) {
 400                                         wprintf("</I>");
 401                                 }
 402
 403                                 wprintf("</TD></TR></TABLE>");
 404                                 wprintf("'); \n");
 405
 406                                 strcpy(WC->last_chat_user, cl_user);
 407                         }
 408                 }
 409
 410                 wprintf("parent.chat_transcript.scrollTo(999999,999999);\">\n");
 411         }
 412
 413         free(output_data);
 414
 415         wprintf("</BODY></HTML>\n");
 416         wDumpContent(0);
 417 }
 418
 419
 420 /**
 421  * \brief sending side of the chat window
 422  */
 423 void chat_send(void) {
 424         int i;
 425         char send_this[SIZ];
 426         char buf[SIZ];
 427
 428         output_headers(0, 0, 0, 0, 0, 0);
 429         hprintf("Content-type: text/html; charset=utf-8\r\n");
 430         wprintf("<HTML>"
 431                 "<BODY onLoad=\"document.chatsendform.send_this.focus();\" >"
 432         );
 433
 434         if (havebstr("send_this")) {
 435                 strcpy(send_this, bstr("send_this"));
 436         }
 437         else {
 438                 strcpy(send_this, "");
 439         }
 440
 441         if (havebstr("help_button")) {
 442                 strcpy(send_this, "/help");
 443         }
 444
 445         if (havebstr("list_button")) {
 446                 strcpy(send_this, "/who");
 447         }
 448
 449         if (havebstr("exit_button")) {
 450                 strcpy(send_this, "/quit");
 451         }
 452
 453         if (setup_chat_socket() != 0) {
 454                 wprintf(_("An error occurred while setting up the chat socket."));
 455                 wprintf("</BODY></HTML>\n");
 456                 wDumpContent(0);
 457                 return;
 458         }
 459
 460         /** Temporarily swap the serv and chat sockets during chat talk */
 461         i = WC->serv_sock;
 462         WC->serv_sock = WC->chat_sock;
 463         WC->chat_sock = i;
 464
 465         while (!IsEmptyStr(send_this)) {
 466                 if (strlen(send_this) < 67) {
 467                         serv_puts(send_this);
 468                         strcpy(send_this, "");
 469                 }
 470                 else {
 471                         for (i=55; i<67; ++i) {
 472                                 if (send_this[i] == ' ') break;
 473                         }
 474                         strncpy(buf, send_this, i);
 475                         buf[i] = 0;
 476                         strcpy(send_this, &send_this[i]);
 477                         serv_puts(buf);
 478                 }
 479         }
 480
 481         /** Unswap the sockets. */
 482         i = WC->serv_sock;
 483         WC->serv_sock = WC->chat_sock;
 484         WC->chat_sock = i;
 485
 486         wprintf("<FORM METHOD=\"POST\" action=\"chat_send\" NAME=\"chatsendform\">\n");
 487         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 488         wprintf("<INPUT TYPE=\"text\" SIZE=\"80\" MAXLENGTH=\"%d\" "
 489                 "NAME=\"send_this\">\n", SIZ-10);
 490         wprintf("<br />");
 491         wprintf("<INPUT TYPE=\"submit\" NAME=\"send_button\" VALUE=\"%s\">\n", _("Send"));
 492         wprintf("<INPUT TYPE=\"submit\" NAME=\"help_button\" VALUE=\"%s\">\n", _("Help"));
 493         wprintf("<INPUT TYPE=\"submit\" NAME=\"list_button\" VALUE=\"%s\">\n", _("List users"));
 494         wprintf("<INPUT TYPE=\"submit\" NAME=\"exit_button\" VALUE=\"%s\">\n", _("Exit"));
 495         wprintf("</FORM>\n");
 496
 497         wprintf("</BODY></HTML>\n");
 498         wDumpContent(0);
 499 }
 500
 501 void
 502 InitModule_PAGING
 503 (void)
 504 {
 505         WebcitAddUrlHandler(HKEY("display_page"), display_page, 0);
 506         WebcitAddUrlHandler(HKEY("page_user"), page_user, 0);
 507         WebcitAddUrlHandler(HKEY("chat"), do_chat, 0);
 508         WebcitAddUrlHandler(HKEY("chat_recv"), chat_recv, 0);
 509         WebcitAddUrlHandler(HKEY("chat_send"), chat_send, 0);
 510 }
 511
 512 /*@}*/