Usermode/Applications/irc_src/main.c

   1 /*\r
   2  * Acess2 IRC Client\r
   3  */\r
   4 #include <acess/sys.h>\r
   5 #include <stdlib.h>\r
   6 #include <stdio.h>\r
   7 #include <string.h>\r
   8 #include <net.h>\r
   9 #include <readline.h>\r
  10 \r
  11 // === TYPES ===\r
  12 typedef struct sServer {\r
  13         struct sServer  *Next;\r
  14          int    FD;\r
  15         char    InBuf[BUFSIZ+1];\r
  16          int    ReadPos;\r
  17         char    Name[];\r
  18 } tServer;\r
  19 \r
  20 typedef struct sMessage\r
  21 {\r
  22         struct sMessage *Next;\r
  23         time_t  Timestamp;\r
  24         tServer *Server;\r
  25          int    Type;\r
  26         char    *Source;        // Pointer into `Data`\r
  27         char    Data[];\r
  28 }       tMessage;\r
  29 \r
  30 typedef struct sWindow\r
  31 {\r
  32         struct sWindow  *Next;\r
  33         tMessage        *Messages;\r
  34         tServer *Server;        //!< Canoical server (can be NULL)\r
  35          int    ActivityLevel;\r
  36         char    Name[]; // Channel name / remote user\r
  37 }       tWindow;\r
  38 \r
  39 enum eMessageTypes\r
  40 {\r
  41         MSG_TYPE_NULL,\r
  42         MSG_TYPE_SERVER,        // Server message\r
  43         \r
  44         MSG_TYPE_NOTICE,        // NOTICE command\r
  45         MSG_TYPE_JOIN,  // JOIN command\r
  46         MSG_TYPE_PART,  // PART command\r
  47         MSG_TYPE_QUIT,  // QUIT command\r
  48         \r
  49         MSG_TYPE_STANDARD,      // Standard line\r
  50         MSG_TYPE_ACTION,        // /me\r
  51         \r
  52         MSG_TYPE_UNK\r
  53 };\r
  54 \r
  55 // === PROTOTYPES ===\r
  56  int    ParseArguments(int argc, const char *argv[]);\r
  57  int    ParseUserCommand(char *String);\r
  58 // --- \r
  59 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber);\r
  60 tMessage        *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...);\r
  61 tMessage        *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message);\r
  62 tWindow *Window_Create(tServer *Server, const char *Name);\r
  63 void    Redraw_Screen(void);\r
  64 \r
  65  int    ProcessIncoming(tServer *Server);\r
  66 // --- Helpers\r
  67  int    SetCursorPos(int Row, int Col);\r
  68  int    writef(int FD, const char *Format, ...);\r
  69  int    OpenTCP(const char *AddressString, short PortNumber);\r
  70 char    *GetValue(char *Str, int *Ofs);\r
  71 static inline int       isdigit(int ch);\r
  72 \r
  73 // === GLOBALS ===\r
  74 char    *gsUsername = "user";\r
  75 char    *gsHostname = "acess";\r
  76 char    *gsRealName = "Acess2 IRC Client";\r
  77 char    *gsNickname = "acess";\r
  78 tServer *gpServers;\r
  79 tWindow gWindow_Status = {\r
  80         NULL, NULL, NULL,       // No next, empty list, no server\r
  81         0, {""} // No activity, empty name (rendered as status)\r
  82 };\r
  83 tWindow *gpWindows = &gWindow_Status;\r
  84 tWindow *gpCurrentWindow = &gWindow_Status;\r
  85  int    giTerminal_Width = 80;\r
  86  int    giTerminal_Height = 25;\r
  87 \r
  88 // ==== CODE ====\r
  89 void ExitHandler(void)\r
  90 {\r
  91         printf("\x1B[?1047l");\r
  92         printf("Quit\n");\r
  93 }\r
  94 \r
  95 int main(int argc, const char *argv[], const char *envp[])\r
  96 {\r
  97          int    tmp;\r
  98         tReadline       *readline_info;\r
  99         \r
 100         // Parse Command line\r
 101         if( (tmp = ParseArguments(argc, argv)) )        return tmp;\r
 102         \r
 103         atexit(ExitHandler);\r
 104         \r
 105         giTerminal_Width = _SysIOCtl(1, 5, NULL);       // getset_width\r
 106         giTerminal_Height = _SysIOCtl(1, 6, NULL);      // getset_height\r
 107         \r
 108         printf("\x1B[?1047h");\r
 109         printf("\x1B[%i;%ir", 0, giTerminal_Height-1);\r
 110         \r
 111         SetCursorPos(giTerminal_Height-1, 0);\r
 112         printf("[(status)] ");\r
 113         \r
 114         // HACK: Static server entry\r
 115         // UCC (University [of Western Australia] Computer Club) IRC Server\r
 116         gWindow_Status.Server = Server_Connect( "UCC", "130.95.13.18", 6667 );\r
 117         // Freenode (#osdev)\r
 118 //      gWindow_Status.Server = Server_Connect( "Freenode", "89.16.176.16", 6667 );\r
 119 //      gWindow_Status.Server = Server_Connect( "Host", "10.0.2.2", 6667 );\r
 120         // Local server\r
 121 //      gWindow_Status.Server = Server_Connect( "BitlBee", "192.168.1.39", 6667 );\r
 122         \r
 123         if( !gWindow_Status.Server )\r
 124                 return -1;\r
 125         \r
 126         SetCursorPos(giTerminal_Height-1, 0);\r
 127         printf("[(status)] ");\r
 128         readline_info = Readline_Init(1);\r
 129         \r
 130         for( ;; )\r
 131         {\r
 132                 fd_set  readfds, errorfds;\r
 133                  int    rv, maxFD = 0;\r
 134                 tServer *srv;\r
 135                 \r
 136                 FD_ZERO(&readfds);\r
 137                 FD_ZERO(&errorfds);\r
 138                 FD_SET(0, &readfds);    // stdin\r
 139                 \r
 140                 // Fill server FDs in fd_set\r
 141                 for( srv = gpServers; srv; srv = srv->Next )\r
 142                 {\r
 143                         FD_SET(srv->FD, &readfds);\r
 144                         FD_SET(srv->FD, &errorfds);\r
 145                         if( srv->FD > maxFD )\r
 146                                 maxFD = srv->FD;\r
 147                 }\r
 148                 \r
 149                 rv = select(maxFD+1, &readfds, 0, &errorfds, NULL);\r
 150                 if( rv == -1 )  break;\r
 151                 \r
 152                 if(FD_ISSET(0, &readfds))\r
 153                 {\r
 154                         // User input\r
 155                         char    *cmd = Readline_NonBlock(readline_info);\r
 156                         if( cmd )\r
 157                         {\r
 158                                 if( cmd[0] )\r
 159                                 {\r
 160                                         ParseUserCommand(cmd);\r
 161                                 }\r
 162                                 free(cmd);\r
 163                                 // Prompt\r
 164                                 SetCursorPos(giTerminal_Height-1, 0);\r
 165                                 printf("\x1B[K");       // Clear line\r
 166                                 if( gpCurrentWindow->Name[0] )\r
 167                                         printf("[%s:%s] ", gpCurrentWindow->Server->Name, gpCurrentWindow->Name);\r
 168                                 else\r
 169                                         printf("[(status)] ");\r
 170                         }\r
 171                 }\r
 172                 \r
 173                 // Server response\r
 174                 for( srv = gpServers; srv; srv = srv->Next )\r
 175                 {\r
 176                         if(FD_ISSET(srv->FD, &readfds))\r
 177                         {\r
 178                                 if( ProcessIncoming(srv) != 0 ) {\r
 179                                         // Oops, error\r
 180                                         break;\r
 181                                 }\r
 182                         }\r
 183                         \r
 184                         if(FD_ISSET(srv->FD, &errorfds))\r
 185                         {\r
 186                                 break;\r
 187                         }\r
 188                 }\r
 189                 \r
 190                 // Oops, an error\r
 191                 if( srv )       break;\r
 192         }\r
 193         \r
 194         {\r
 195                 tServer *srv;\r
 196                 for( srv = gpServers; srv; srv = srv->Next )\r
 197                         _SysClose(srv->FD);\r
 198         }\r
 199         return 0;\r
 200 }\r
 201 \r
 202 /**\r
 203  * \todo Actually implement correctly :)\r
 204  */\r
 205 int ParseArguments(int argc, const char *argv[])\r
 206 {\r
 207         return 0;\r
 208 }\r
 209 \r
 210 /**\r
 211  * \brief Handle a line from the prompt\r
 212  */\r
 213 int ParseUserCommand(char *String)\r
 214 {\r
 215         if( String[0] == '/' )\r
 216         {\r
 217                 char    *command;\r
 218                  int    pos = 0;\r
 219                 \r
 220                 command = GetValue(String, &pos);\r
 221                 \r
 222                 if( strcmp(command, "/join") == 0 )\r
 223                 {\r
 224                         char    *channel_name = GetValue(String, &pos);\r
 225                         \r
 226                         if( gpCurrentWindow->Server )\r
 227                         {\r
 228                                 writef(gpCurrentWindow->Server->FD, "JOIN :%s\n",  channel_name);\r
 229                         }\r
 230                 }\r
 231                 else if( strcmp(command, "/quit") == 0 )\r
 232                 {\r
 233                         char    *quit_message = String + pos;\r
 234                         tServer *srv;\r
 235                         \r
 236                         if( quit_message == NULL || quit_message[0] == '\0' )\r
 237                                 quit_message = "/quit - Acess2 IRC Client";\r
 238                         \r
 239                         for( srv = gpServers; srv; srv = srv->Next )\r
 240                         {\r
 241                                 writef(srv->FD, "QUIT :%s\n", quit_message);\r
 242                         }\r
 243                         \r
 244                         exit(0);\r
 245                 }\r
 246                 else if( strcmp(command, "/window") == 0 || strcmp(command, "/win") == 0 || strcmp(command, "/w") == 0 )\r
 247                 {\r
 248                         char    *window_id = GetValue(String, &pos);\r
 249                          int    window_num = atoi(window_id);\r
 250                         \r
 251                         if( window_num > 0 )\r
 252                         {\r
 253                                 tWindow *win;\r
 254                                 window_num --;  // Move to base 0\r
 255                                 // Get `window_num`th window\r
 256                                 for( win = gpWindows; win && window_num--; win = win->Next );\r
 257                                 if( win ) {\r
 258                                         gpCurrentWindow = win;\r
 259                                         Redraw_Screen();\r
 260                                 }\r
 261                                 // Otherwise, silently ignore\r
 262                         }\r
 263                         else\r
 264                         {\r
 265                                 tWindow *win;\r
 266                                 window_num = 1;\r
 267                                 for( win = gpWindows; win; win = win->Next, window_num ++ )\r
 268                                 {\r
 269                                         if( win->Name[0] ) {\r
 270                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 271                                                         "%i: %s/%s", window_num, win->Server->Name, win->Name);\r
 272                                         }\r
 273                                         else {\r
 274                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 275                                                         "%i: (status)", window_num);\r
 276                                         }\r
 277                                 }\r
 278                         }\r
 279                 }\r
 280                 else\r
 281                 {\r
 282                         Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "", "Unknown command %s", command);\r
 283                 }\r
 284         }\r
 285         else\r
 286         {\r
 287                 // Message\r
 288                 // - Only send if server is valid and window name is non-empty\r
 289                 if( gpCurrentWindow->Server && gpCurrentWindow->Name[0] )\r
 290                 {\r
 291                         Message_Append(gpCurrentWindow->Server, MSG_TYPE_STANDARD,\r
 292                                 gsNickname, gpCurrentWindow->Name, String);\r
 293                         writef(gpCurrentWindow->Server->FD,\r
 294                                 "PRIVMSG %s :%s\n", gpCurrentWindow->Name,\r
 295                                 String\r
 296                                 );\r
 297                 }\r
 298         }\r
 299         \r
 300         return 0;\r
 301 }\r
 302 \r
 303 /**\r
 304  * \brief Connect to a server\r
 305  */\r
 306 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber)\r
 307 {\r
 308         tServer *ret;\r
 309         \r
 310         ret = calloc(1, sizeof(tServer) + strlen(Name) + 1);\r
 311         \r
 312         strcpy(ret->Name, Name);\r
 313         \r
 314         // Connect to the remove server\r
 315         ret->FD = OpenTCP( AddressString, PortNumber );\r
 316         if( ret->FD == -1 ) {\r
 317                 fprintf(stderr, "%s: Unable to create socket\n", Name);\r
 318                 return NULL;\r
 319         }\r
 320         \r
 321         // Append to open list\r
 322         ret->Next = gpServers;\r
 323         gpServers = ret;\r
 324         \r
 325         // Read some initial data\r
 326         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Connection opened");\r
 327         ProcessIncoming(ret);\r
 328         \r
 329         // Identify\r
 330         writef(ret->FD, "USER %s %s %s : %s\n", gsUsername, gsHostname, AddressString, gsRealName);\r
 331         writef(ret->FD, "NICK %s\n", gsNickname);\r
 332         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Identified");\r
 333         //printf("%s: Identified\n", Name);\r
 334         \r
 335         return ret;\r
 336 }\r
 337 \r
 338 tMessage *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...)\r
 339 {\r
 340         va_list args;\r
 341          int    len;\r
 342         va_start(args, Message);\r
 343         len = vsnprintf(NULL, 1000, Message, args);\r
 344         {\r
 345                 char    buf[len+1];\r
 346                 vsnprintf(buf, len+1, Message, args);\r
 347                 return Message_Append(Server, Type, Source, Dest, buf);\r
 348         }\r
 349 }\r
 350 \r
 351 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message)\r
 352 {\r
 353         tMessage        *ret;\r
 354         tWindow *win = NULL;\r
 355          int    msgLen = strlen(Message);\r
 356         \r
 357         // NULL servers are internal messages\r
 358         if( Server == NULL || Source[0] == '\0' )\r
 359         {\r
 360                 win = &gWindow_Status;\r
 361         }\r
 362         // Determine if it's a channel or PM message\r
 363         else if( Dest[0] == '#' || Dest[0] == '&' )     // TODO: Better determining here\r
 364         {\r
 365                 for(win = gpWindows; win; win = win->Next)\r
 366                 {\r
 367                         if( win->Server == Server && strcmp(win->Name, Dest) == 0 )\r
 368                         {\r
 369                                 break;\r
 370                         }\r
 371                 }\r
 372                 if( !win ) {\r
 373                         win = Window_Create(Server, Dest);\r
 374                 }\r
 375         }\r
 376         #if 0\r
 377         else if( strcmp(Dest, Server->Nick) != 0 )\r
 378         {\r
 379                 // Umm... message for someone who isn't us?\r
 380                 win = &gWindow_Status;  // Stick it in the status window, just in case\r
 381         }\r
 382         #endif\r
 383         // Server message?\r
 384         else if( strchr(Source, '.') )  // TODO: And again, less hack please\r
 385         {\r
 386                 #if 1\r
 387                 for(win = gpWindows; win; win = win->Next)\r
 388                 {\r
 389                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 390                         {\r
 391                                 break;\r
 392                         }\r
 393                 }\r
 394                 #endif\r
 395                 if( !win ) {\r
 396                         win = &gWindow_Status;\r
 397                 }\r
 398                 \r
 399         }\r
 400         // Private message\r
 401         else\r
 402         {\r
 403                 for(win = gpWindows; win; win = win->Next)\r
 404                 {\r
 405                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 406                         {\r
 407                                 break;\r
 408                         }\r
 409                 }\r
 410                 if( !win ) {\r
 411                         win = Window_Create(Server, Dest);\r
 412                 }\r
 413         }\r
 414         \r
 415         ret = malloc( sizeof(tMessage) + msgLen + 1 + strlen(Source) + 1 );\r
 416         ret->Source = ret->Data + msgLen + 1;\r
 417         strcpy(ret->Source, Source);\r
 418         strcpy(ret->Data, Message);\r
 419         ret->Type = Type;\r
 420         ret->Server = Server;\r
 421         \r
 422         // TODO: Append to window message list\r
 423         ret->Next = win->Messages;\r
 424         win->Messages = ret;\r
 425         \r
 426         //TODO: Set location\r
 427         \r
 428         {\r
 429                 int pos = SetCursorPos(giTerminal_Height-2, 0);\r
 430                 if( win == gpCurrentWindow ) {\r
 431                          int    prefixlen = strlen(Source) + 3;\r
 432                          int    avail = giTerminal_Width - prefixlen;\r
 433                          int    msglen = strlen(Message);\r
 434                         printf("\x1B[T");       // Scroll down 1 (free space below)\r
 435                         printf("[%s] %.*s\n", Source, avail, Message);\r
 436                         while( msglen > avail ) {\r
 437                                 msglen -= avail;\r
 438                                 Message += avail;\r
 439                                 printf("\x1B[T");\r
 440                                 SetCursorPos(giTerminal_Height-2, prefixlen);\r
 441                                 printf("%.*s\n", avail, Message);\r
 442                         }\r
 443                 }\r
 444                 SetCursorPos(-1, pos);\r
 445         }\r
 446         \r
 447         return ret;\r
 448 }\r
 449 \r
 450 tWindow *Window_Create(tServer *Server, const char *Name)\r
 451 {\r
 452         tWindow *ret, *prev = NULL;\r
 453          int    num = 1;\r
 454         \r
 455         // Get the end of the list\r
 456         // TODO: Cache this instead\r
 457         for( ret = gpCurrentWindow; ret; prev = ret, ret = ret->Next )\r
 458                 num ++;\r
 459         \r
 460         ret = malloc(sizeof(tWindow) + strlen(Name) + 1);\r
 461         ret->Messages = NULL;\r
 462         ret->Server = Server;\r
 463         ret->ActivityLevel = 1;\r
 464         strcpy(ret->Name, Name);\r
 465         \r
 466         if( prev ) {\r
 467                 ret->Next = prev->Next;\r
 468                 prev->Next = ret;\r
 469         }\r
 470         else {  // Shouldn't happen really\r
 471                 ret->Next = gpWindows;\r
 472                 gpWindows = ret;\r
 473         }\r
 474         \r
 475 //      printf("Win %i %s:%s created\n", num, Server->Name, Name);\r
 476         \r
 477         return ret;\r
 478 }\r
 479 \r
 480 void Redraw_Screen(void)\r
 481 {\r
 482          int    y = 0;\r
 483         tMessage        *msg;\r
 484 \r
 485         printf("\x1B[2J");      // Clear screen\r
 486         printf("\x1B[0;0H");    // Reset cursor\r
 487 \r
 488         msg = gpCurrentWindow->Messages;\r
 489         \r
 490         // TODO: Title bar?\r
 491 \r
 492         // Note: This renders from the bottom up\r
 493         for( y = giTerminal_Height - 1; y -- && msg; msg = msg->Next)\r
 494         {\r
 495                  int    msglen = strlen(msg->Data);\r
 496                  int    prefix_len = 3 + strlen(msg->Source);\r
 497                  int    line_avail = giTerminal_Width - prefix_len;\r
 498                  int    i = 0, done = 0;\r
 499                 \r
 500                 y -= msglen / line_avail;       // Extra lines (y-- above handles the 1 line case)\r
 501                 SetCursorPos(y, 0);\r
 502                 printf("[%s] ", msg->Source);\r
 503                 \r
 504                 while(done < msglen) {\r
 505                         done += printf("%.*s", line_avail, msg->Data+done);\r
 506                         i ++;\r
 507                         SetCursorPos(y+i, prefix_len);\r
 508                 }\r
 509         }\r
 510 \r
 511         // Bottom line is rendered by the prompt\r
 512 }\r
 513 \r
 514 void Cmd_PRIVMSG(tServer *Server, const char *Dest, const char *Src, const char *Message)\r
 515 {\r
 516         Message_Append(Server, MSG_TYPE_STANDARD, Dest, Src, Message);\r
 517         //printf("<%s:%s:%s> %s\n", Server->Name, Dest, Src, Message);\r
 518 }\r
 519 \r
 520 /**\r
 521  */\r
 522 void ParseServerLine(tServer *Server, char *Line)\r
 523 {\r
 524          int    pos = 0;\r
 525         char    *ident, *cmd;\r
 526 \r
 527         _SysDebug("[%s] %s", Server->Name, Line);       \r
 528         \r
 529         // Message?\r
 530         if( *Line == ':' )\r
 531         {\r
 532                 pos ++;\r
 533                 ident = GetValue(Line, &pos);   // Ident (user or server)\r
 534                 cmd = GetValue(Line, &pos);\r
 535                 \r
 536                 // Numeric command\r
 537                 if( isdigit(cmd[0]) && isdigit(cmd[1]) && isdigit(cmd[2]) )\r
 538                 {\r
 539                         char    *user, *message;\r
 540                          int    num;\r
 541                         num  = (cmd[0] - '0') * 100;\r
 542                         num += (cmd[1] - '0') * 10;\r
 543                         num += (cmd[2] - '0') * 1;\r
 544                         \r
 545                         user = GetValue(Line, &pos);\r
 546                         \r
 547                         if( Line[pos] == ':' ) {\r
 548                                 message = Line + pos + 1;\r
 549                         }\r
 550                         else {\r
 551                                 message = GetValue(Line, &pos);\r
 552                         }\r
 553                         \r
 554                         switch(num)\r
 555                         {\r
 556                         case 332:       // Topic\r
 557                                 user = message; // Channel\r
 558                                 message = Line + pos + 1;       // Topic\r
 559                                 Message_AppendF(Server, MSG_TYPE_SERVER, user, user, "Topic: %s", message);\r
 560                                 break;\r
 561                         case 333:       // Topic set by\r
 562                                 user = message; // Channel\r
 563                                 message = GetValue(Line, &pos); // User\r
 564                                 GetValue(Line, &pos);   // Timestamp\r
 565                                 Message_AppendF(Server, MSG_TYPE_SERVER, user, user, "Set by %s", message);\r
 566                                 break;\r
 567                         case 353:       // /NAMES list\r
 568                                 // <user> = <channel> :list\r
 569                                 // '=' was eaten in and set to message\r
 570                                 user = GetValue(Line, &pos);    // Actually channel\r
 571                                 message = Line + pos + 1;       // List\r
 572                                 Message_AppendF(Server, MSG_TYPE_SERVER, user, user, "Names: %s", message);\r
 573                                 break;\r
 574                         case 366:       // end of /NAMES list\r
 575                                 // <user> <channel> :msg\r
 576                                 user = message;\r
 577                                 message = Line + pos + 1;\r
 578                                 Message_Append(Server, MSG_TYPE_SERVER, user, user, message);\r
 579                                 break;\r
 580                         case 372:       // MOTD Data\r
 581                         case 376:       // MOTD End\r
 582                                 \r
 583                         default:\r
 584                                 //printf("[%s] %i %s\n", Server->Name, num, message);\r
 585                                 Message_Append(Server, MSG_TYPE_SERVER, ident, user, message);\r
 586                                 break;\r
 587                         }\r
 588                 }\r
 589                 else if( strcmp(cmd, "NOTICE") == 0 )\r
 590                 {\r
 591                         char    *class, *message;\r
 592                         \r
 593                         class = GetValue(Line, &pos);\r
 594                         _SysDebug("NOTICE class='%s'", class);\r
 595                         \r
 596                         if( Line[pos] == ':' ) {\r
 597                                 message = Line + pos + 1;\r
 598                         }\r
 599                         else {\r
 600                                 message = GetValue(Line, &pos);\r
 601                         }\r
 602                         \r
 603                         //printf("[%s] NOTICE %s: %s\n", Server->Name, ident, message);\r
 604                         Message_Append(Server, MSG_TYPE_NOTICE, ident, "", message);\r
 605                 }\r
 606                 else if( strcmp(cmd, "PRIVMSG") == 0 )\r
 607                 {\r
 608                         char    *dest, *message;\r
 609                         dest = GetValue(Line, &pos);\r
 610                         \r
 611                         if( Line[pos] == ':' ) {\r
 612                                 message = Line + pos + 1;\r
 613                         }\r
 614                         else {\r
 615                                 message = GetValue(Line, &pos);\r
 616                         }\r
 617 \r
 618                         // TODO: Catch when the privmsg is addressed to the user\r
 619 \r
 620 //                      Cmd_PRIVMSG(Server, dest, ident, message);\r
 621                         *strchr(ident, '!') = '\0';     // Hello SIGSEGV\r
 622                         Message_Append(Server, MSG_TYPE_STANDARD, ident, dest, message);\r
 623                 }\r
 624                 else if( strcmp(cmd, "JOIN" ) == 0 )\r
 625                 {\r
 626                         char    *channel;\r
 627                         channel = Line + pos + 1;\r
 628                         Window_Create(Server, channel);\r
 629                 }\r
 630                 else\r
 631                 {\r
 632                         Message_AppendF(Server, MSG_TYPE_SERVER, "", "", "Unknown message %s (%s)\n", cmd, Line+pos);\r
 633                 }\r
 634         }\r
 635         else {          \r
 636                 cmd = GetValue(Line, &pos);\r
 637                 \r
 638                 if( strcmp(cmd, "PING") == 0 ) {\r
 639                         writef(Server->FD, "PONG %s\n", gsHostname);\r
 640                         \r
 641                 }\r
 642                 else {\r
 643                         // Command to client\r
 644                         Message_AppendF(NULL, MSG_TYPE_UNK, "", "", "Client Command: %s", Line);\r
 645                 }\r
 646         }\r
 647 }\r
 648 \r
 649 /**\r
 650  * \brief Process incoming lines from the server\r
 651  */\r
 652 int ProcessIncoming(tServer *Server)\r
 653 {       \r
 654         char    *ptr, *newline;\r
 655          int    len;\r
 656         \r
 657         // While there is data in the buffer, read it into user memory and \r
 658         // process it line by line\r
 659         // ioctl#8 on a TCP client gets the number of bytes in the recieve buffer\r
 660         // - Used to avoid blocking\r
 661         #if NON_BLOCK_READ\r
 662         while( (len = _SysIOCtl(Server->FD, 8, NULL)) > 0 )\r
 663         {\r
 664         #endif\r
 665                 // Read data\r
 666                 len = _SysRead(Server->FD, &Server->InBuf[Server->ReadPos], BUFSIZ - Server->ReadPos);\r
 667                 if( len == -1 ) {\r
 668                         return -1;\r
 669                 }\r
 670                 Server->InBuf[Server->ReadPos + len] = '\0';\r
 671                 \r
 672                 // Break into lines\r
 673                 ptr = Server->InBuf;\r
 674                 while( (newline = strchr(ptr, '\n')) )\r
 675                 {\r
 676                         *newline = '\0';\r
 677                         if( newline[-1] == '\r' )       newline[-1] = '\0';\r
 678                         ParseServerLine(Server, ptr);\r
 679                         ptr = newline + 1;\r
 680                 }\r
 681                 \r
 682                 // Handle incomplete lines\r
 683                 if( ptr - Server->InBuf < len + Server->ReadPos ) {\r
 684                         // Update the read position\r
 685                         // InBuf ReadPos    ptr          ReadPos+len\r
 686                         // | old | new used | new unused |\r
 687                         Server->ReadPos = len + Server->ReadPos - (ptr - Server->InBuf);\r
 688                         // Copy stuff back (moving "new unused" to the start of the buffer)\r
 689                         memcpy(Server->InBuf, ptr, Server->ReadPos);\r
 690                 }\r
 691                 else {\r
 692                         Server->ReadPos = 0;\r
 693                 }\r
 694         #if NON_BLOCK_READ\r
 695         }\r
 696         #endif\r
 697         \r
 698         return 0;\r
 699 }\r
 700 \r
 701 /**\r
 702  * \brief Write a formatted string to a file descriptor\r
 703  * \r
 704  */\r
 705 int writef(int FD, const char *Format, ...)\r
 706 {\r
 707         va_list args;\r
 708          int    len;\r
 709         \r
 710         va_start(args, Format);\r
 711         len = vsnprintf(NULL, 1000, Format, args);\r
 712         va_end(args);\r
 713         \r
 714         {\r
 715                 char    buf[len+1];\r
 716                 va_start(args, Format);\r
 717                 vsnprintf(buf, len+1, Format, args);\r
 718                 va_end(args);\r
 719                 \r
 720                 return _SysWrite(FD, buf, len);\r
 721         }\r
 722 }\r
 723 \r
 724 /**\r
 725  * \brief Initialise a TCP connection to \a AddressString on port \a PortNumber\r
 726  */\r
 727 int OpenTCP(const char *AddressString, short PortNumber)\r
 728 {\r
 729          int    fd, addrType;\r
 730         char    addrBuffer[8];\r
 731         \r
 732         // Parse IP Address\r
 733         addrType = Net_ParseAddress(AddressString, addrBuffer);\r
 734         if( addrType == 0 ) {\r
 735                 fprintf(stderr, "Unable to parse '%s' as an IP address\n", AddressString);\r
 736                 _SysDebug("Unable to parse '%s' as an IP address\n", AddressString);\r
 737                 return -1;\r
 738         }\r
 739         \r
 740         // Finds the interface for the destination address\r
 741         fd = Net_OpenSocket(addrType, addrBuffer, "tcpc");\r
 742         if( fd == -1 ) {\r
 743                 fprintf(stderr, "Unable to open TCP Client to '%s'\n", AddressString);\r
 744                 _SysDebug("Unable to open TCP client to '%s'\n", AddressString);\r
 745                 return -1;\r
 746         }\r
 747         \r
 748         // Set remote port and address\r
 749 //      printf("Setting port and remote address\n");\r
 750         _SysIOCtl(fd, 5, &PortNumber);\r
 751         _SysIOCtl(fd, 6, addrBuffer);\r
 752         \r
 753         // Connect\r
 754 //      printf("Initiating connection\n");\r
 755         if( _SysIOCtl(fd, 7, NULL) == 0 ) {\r
 756                 // Shouldn't happen :(\r
 757                 fprintf(stderr, "Unable to start connection\n");\r
 758                 return -1;\r
 759         }\r
 760         \r
 761         // Return descriptor\r
 762         return fd;\r
 763 }\r
 764 \r
 765 /**\r
 766  * \brief Read a space-separated value from a string\r
 767  */\r
 768 char *GetValue(char *Src, int *Ofs)\r
 769 {\r
 770          int    pos = *Ofs;\r
 771         char    *ret = Src + pos;\r
 772         char    *end;\r
 773         \r
 774         if( !Src )      return NULL;\r
 775         \r
 776         while( *ret == ' ' )    ret ++;\r
 777         \r
 778         end = strchr(ret, ' ');\r
 779         if( end ) {\r
 780                 *end = '\0';\r
 781         }\r
 782         else {\r
 783                 end = ret + strlen(ret) - 1;\r
 784         }\r
 785         \r
 786         end ++ ;\r
 787         while( *ret == ' ' )    end ++;\r
 788         *Ofs = end - Src;\r
 789         \r
 790         return ret;\r
 791 }\r
 792 \r
 793 int SetCursorPos(int Row, int Col)\r
 794 {\r
 795          int    rv;\r
 796         if( Row == -1 ) {\r
 797                 Row = Col / giTerminal_Width;\r
 798                 Col = Col % giTerminal_Width;\r
 799         }\r
 800         rv = _SysIOCtl(1, 9, NULL);     // Ugh, constants\r
 801         printf("\x1B[%i;%iH", Col, Row);\r
 802         return rv;\r
 803 }\r
 804 \r
 805 static inline int isdigit(int ch)\r
 806 {\r
 807         return '0' <= ch && ch < '9';\r
 808 }\r