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 = ioctl(1, 5, NULL);   // getset_width\r
 106         giTerminal_Height = ioctl(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         gWindow_Status.Server = Server_Connect( "Freenode", "89.16.176.16", 6667 );\r
 118 //      gWindow_Status.Server = Server_Connect( "Host", "10.0.2.2", 6667 );\r
 119 //      gWindow_Status.Server = Server_Connect( "BitlBee", "192.168.1.34", 6667 );\r
 120         \r
 121         if( !gWindow_Status.Server )\r
 122                 return -1;\r
 123         \r
 124         SetCursorPos(giTerminal_Height-1, 0);\r
 125         printf("[(status)] ");\r
 126         readline_info = Readline_Init(1);\r
 127         \r
 128         for( ;; )\r
 129         {\r
 130                 fd_set  readfds, errorfds;\r
 131                  int    rv, maxFD = 0;\r
 132                 tServer *srv;\r
 133                 \r
 134                 FD_ZERO(&readfds);\r
 135                 FD_ZERO(&errorfds);\r
 136                 FD_SET(0, &readfds);    // stdin\r
 137                 \r
 138                 // Fill server FDs in fd_set\r
 139                 for( srv = gpServers; srv; srv = srv->Next )\r
 140                 {\r
 141                         FD_SET(srv->FD, &readfds);\r
 142                         FD_SET(srv->FD, &errorfds);\r
 143                         if( srv->FD > maxFD )\r
 144                                 maxFD = srv->FD;\r
 145                 }\r
 146                 \r
 147                 rv = select(maxFD+1, &readfds, 0, &errorfds, NULL);\r
 148                 if( rv == -1 )  break;\r
 149                 \r
 150                 if(FD_ISSET(0, &readfds))\r
 151                 {\r
 152                         // User input\r
 153                         char    *cmd = Readline_NonBlock(readline_info);\r
 154                         if( cmd )\r
 155                         {\r
 156                                 if( cmd[0] )\r
 157                                 {\r
 158                                         ParseUserCommand(cmd);\r
 159                                 }\r
 160                                 free(cmd);\r
 161                                 // Prompt\r
 162                                 SetCursorPos(giTerminal_Height-1, 0);\r
 163                                 printf("\x1B[K");       // Clear line\r
 164                                 if( gpCurrentWindow->Name[0] )\r
 165                                         printf("[%s:%s] ", gpCurrentWindow->Server->Name, gpCurrentWindow->Name);\r
 166                                 else\r
 167                                         printf("[(status)] ");\r
 168                         }\r
 169                 }\r
 170                 \r
 171                 // Server response\r
 172                 for( srv = gpServers; srv; srv = srv->Next )\r
 173                 {\r
 174                         if(FD_ISSET(srv->FD, &readfds))\r
 175                         {\r
 176                                 if( ProcessIncoming(srv) != 0 ) {\r
 177                                         // Oops, error\r
 178                                         break;\r
 179                                 }\r
 180                         }\r
 181                         \r
 182                         if(FD_ISSET(srv->FD, &errorfds))\r
 183                         {\r
 184                                 break;\r
 185                         }\r
 186                 }\r
 187                 \r
 188                 // Oops, an error\r
 189                 if( srv )       break;\r
 190         }\r
 191         \r
 192         {\r
 193                 tServer *srv;\r
 194                 for( srv = gpServers; srv; srv = srv->Next )\r
 195                         close(srv->FD);\r
 196         }\r
 197         return 0;\r
 198 }\r
 199 \r
 200 /**\r
 201  * \todo Actually implement correctly :)\r
 202  */\r
 203 int ParseArguments(int argc, const char *argv[])\r
 204 {\r
 205         return 0;\r
 206 }\r
 207 \r
 208 int ParseUserCommand(char *String)\r
 209 {\r
 210         if( String[0] == '/' )\r
 211         {\r
 212                 char    *command;\r
 213                  int    pos = 0;\r
 214                 \r
 215                 command = GetValue(String, &pos);\r
 216                 \r
 217                 if( strcmp(command, "/join") == 0 )\r
 218                 {\r
 219                         char    *channel_name = GetValue(String, &pos);\r
 220                         \r
 221                         if( gpCurrentWindow->Server )\r
 222                         {\r
 223                                 writef(gpCurrentWindow->Server->FD, "JOIN :%s\n",  channel_name);\r
 224                         }\r
 225                 }\r
 226                 else if( strcmp(command, "/quit") == 0 )\r
 227                 {\r
 228                         char    *quit_message = String + pos;\r
 229                         tServer *srv;\r
 230                         \r
 231                         if( quit_message == NULL || quit_message[0] == '\0' )\r
 232                                 quit_message = "/quit - Acess2 IRC Client";\r
 233                         \r
 234                         for( srv = gpServers; srv; srv = srv->Next )\r
 235                         {\r
 236                                 writef(srv->FD, "QUIT :%s\n", quit_message);\r
 237                         }\r
 238                         \r
 239                         exit(0);\r
 240                 }\r
 241                 else if( strcmp(command, "/window") == 0 || strcmp(command, "/win") == 0 || strcmp(command, "/w") == 0 )\r
 242                 {\r
 243                         char    *window_id = GetValue(String, &pos);\r
 244                          int    window_num = atoi(window_id);\r
 245                         \r
 246                         if( window_num > 0 )\r
 247                         {\r
 248                                 tWindow *win;\r
 249                                 window_num --;  // Move to base 0\r
 250                                 // Get `window_num`th window\r
 251                                 for( win = gpWindows; win && window_num--; win = win->Next );\r
 252                                 if( win ) {\r
 253                                         gpCurrentWindow = win;\r
 254                                         Redraw_Screen();\r
 255                                 }\r
 256                                 // Otherwise, silently ignore\r
 257                         }\r
 258                         else\r
 259                         {\r
 260                                 tWindow *win;\r
 261                                 window_num = 1;\r
 262                                 for( win = gpWindows; win; win = win->Next, window_num ++ )\r
 263                                 {\r
 264                                         if( win->Name[0] ) {\r
 265                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 266                                                         "%i: %s/%s", window_num, win->Server->Name, win->Name);\r
 267                                         }\r
 268                                         else {\r
 269                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 270                                                         "%i: (status)", window_num);\r
 271                                         }\r
 272                                 }\r
 273                         }\r
 274                 }\r
 275                 else\r
 276                 {\r
 277                         Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "", "Unknown command %s", command);\r
 278                 }\r
 279         }\r
 280         else\r
 281         {\r
 282                 // Message\r
 283                 // - Only send if server is valid and window name is non-empty\r
 284                 if( gpCurrentWindow->Server && gpCurrentWindow->Name[0] )\r
 285                 {\r
 286                         Message_Append(gpCurrentWindow->Server, MSG_TYPE_STANDARD,\r
 287                                 gsNickname, gpCurrentWindow->Name, String);\r
 288                         writef(gpCurrentWindow->Server->FD,\r
 289                                 "PRIVMSG %s :%s\n", gpCurrentWindow->Name,\r
 290                                 String\r
 291                                 );\r
 292                 }\r
 293         }\r
 294         \r
 295         return 0;\r
 296 }\r
 297 \r
 298 /**\r
 299  * \brief Connect to a server\r
 300  */\r
 301 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber)\r
 302 {\r
 303         tServer *ret;\r
 304         \r
 305         ret = calloc(1, sizeof(tServer) + strlen(Name) + 1);\r
 306         \r
 307         strcpy(ret->Name, Name);\r
 308         \r
 309         // Connect to the remove server\r
 310         ret->FD = OpenTCP( AddressString, PortNumber );\r
 311         if( ret->FD == -1 ) {\r
 312                 fprintf(stderr, "%s: Unable to create socket\n", Name);\r
 313                 return NULL;\r
 314         }\r
 315         \r
 316         // Append to open list\r
 317         ret->Next = gpServers;\r
 318         gpServers = ret;\r
 319         \r
 320         // Read some initial data\r
 321         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Connection opened");\r
 322         ProcessIncoming(ret);\r
 323         \r
 324         // Identify\r
 325         writef(ret->FD, "USER %s %s %s : %s\n", gsUsername, gsHostname, AddressString, gsRealName);\r
 326         writef(ret->FD, "NICK %s\n", gsNickname);\r
 327         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Identified");\r
 328         //printf("%s: Identified\n", Name);\r
 329         \r
 330         return ret;\r
 331 }\r
 332 \r
 333 tMessage *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...)\r
 334 {\r
 335         va_list args;\r
 336          int    len;\r
 337         va_start(args, Message);\r
 338         len = vsnprintf(NULL, 1000, Message, args);\r
 339         {\r
 340                 char    buf[len+1];\r
 341                 vsnprintf(buf, len+1, Message, args);\r
 342                 return Message_Append(Server, Type, Source, Dest, buf);\r
 343         }\r
 344 }\r
 345 \r
 346 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message)\r
 347 {\r
 348         tMessage        *ret;\r
 349         tWindow *win = NULL;\r
 350          int    msgLen = strlen(Message);\r
 351         \r
 352         // NULL servers are internal messages\r
 353         if( Server == NULL || Source[0] == '\0' )\r
 354         {\r
 355                 win = &gWindow_Status;\r
 356         }\r
 357         // Determine if it's a channel or PM message\r
 358         else if( Dest[0] == '#' || Dest[0] == '&' )     // TODO: Better determining here\r
 359         {\r
 360                 for(win = gpWindows; win; win = win->Next)\r
 361                 {\r
 362                         if( win->Server == Server && strcmp(win->Name, Dest) == 0 )\r
 363                         {\r
 364                                 break;\r
 365                         }\r
 366                 }\r
 367                 if( !win ) {\r
 368                         win = Window_Create(Server, Dest);\r
 369                 }\r
 370         }\r
 371         #if 0\r
 372         else if( strcmp(Dest, Server->Nick) != 0 )\r
 373         {\r
 374                 // Umm... message for someone who isn't us?\r
 375                 win = &gWindow_Status;  // Stick it in the status window, just in case\r
 376         }\r
 377         #endif\r
 378         // Server message?\r
 379         else if( strchr(Source, '.') )  // TODO: And again, less hack please\r
 380         {\r
 381                 #if 1\r
 382                 for(win = gpWindows; win; win = win->Next)\r
 383                 {\r
 384                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 385                         {\r
 386                                 break;\r
 387                         }\r
 388                 }\r
 389                 #endif\r
 390                 if( !win ) {\r
 391                         win = &gWindow_Status;\r
 392                 }\r
 393                 \r
 394         }\r
 395         // Private message\r
 396         else\r
 397         {\r
 398                 for(win = gpWindows; win; win = win->Next)\r
 399                 {\r
 400                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 401                         {\r
 402                                 break;\r
 403                         }\r
 404                 }\r
 405                 if( !win ) {\r
 406                         win = Window_Create(Server, Dest);\r
 407                 }\r
 408         }\r
 409         \r
 410         ret = malloc( sizeof(tMessage) + msgLen + 1 + strlen(Source) + 1 );\r
 411         ret->Source = ret->Data + msgLen + 1;\r
 412         strcpy(ret->Source, Source);\r
 413         strcpy(ret->Data, Message);\r
 414         ret->Type = Type;\r
 415         ret->Server = Server;\r
 416         \r
 417         // TODO: Append to window message list\r
 418         ret->Next = win->Messages;\r
 419         win->Messages = ret;\r
 420         \r
 421         //TODO: Set location\r
 422         \r
 423         {\r
 424                 int pos = SetCursorPos(giTerminal_Height-2, 0);\r
 425                 if( win == gpCurrentWindow ) {\r
 426                          int    prefixlen = strlen(Source) + 3;\r
 427                          int    avail = giTerminal_Width - prefixlen;\r
 428                          int    msglen = strlen(Message);\r
 429                         printf("\x1B[T");       // Scroll down 1 (free space below)\r
 430                         printf("[%s] %.*s\n", Source, avail, Message);\r
 431                         while( msglen > avail ) {\r
 432                                 msglen -= avail;\r
 433                                 Message += avail;\r
 434                                 printf("\x1B[T");\r
 435                                 SetCursorPos(giTerminal_Height-2, prefixlen);\r
 436                                 printf("%.*s\n", avail, Message);\r
 437                         }\r
 438                 }\r
 439                 SetCursorPos(-1, pos);\r
 440         }\r
 441         \r
 442         return ret;\r
 443 }\r
 444 \r
 445 tWindow *Window_Create(tServer *Server, const char *Name)\r
 446 {\r
 447         tWindow *ret, *prev = NULL;\r
 448          int    num = 1;\r
 449         \r
 450         // Get the end of the list\r
 451         // TODO: Cache this instead\r
 452         for( ret = gpCurrentWindow; ret; prev = ret, ret = ret->Next )\r
 453                 num ++;\r
 454         \r
 455         ret = malloc(sizeof(tWindow) + strlen(Name) + 1);\r
 456         ret->Messages = NULL;\r
 457         ret->Server = Server;\r
 458         ret->ActivityLevel = 1;\r
 459         strcpy(ret->Name, Name);\r
 460         \r
 461         if( prev ) {\r
 462                 ret->Next = prev->Next;\r
 463                 prev->Next = ret;\r
 464         }\r
 465         else {  // Shouldn't happen really\r
 466                 ret->Next = gpWindows;\r
 467                 gpWindows = ret;\r
 468         }\r
 469         \r
 470 //      printf("Win %i %s:%s created\n", num, Server->Name, Name);\r
 471         \r
 472         return ret;\r
 473 }\r
 474 \r
 475 void Redraw_Screen(void)\r
 476 {\r
 477          int    y = 0;\r
 478         tMessage        *msg;\r
 479 \r
 480         printf("\x1B[2J");      // Clear screen\r
 481         printf("\x1B[0;0H");    // Reset cursor\r
 482 \r
 483         msg = gpCurrentWindow->Messages;\r
 484         \r
 485         // TODO: Title bar?\r
 486 \r
 487         // Note: This renders from the bottom up\r
 488         for( y = giTerminal_Height - 1; y -- && msg; msg = msg->Next)\r
 489         {\r
 490                  int    msglen = strlen(msg->Data);\r
 491                  int    prefix_len = 3 + strlen(msg->Source);\r
 492                  int    line_avail = giTerminal_Width - prefix_len;\r
 493                  int    i = 0, done = 0;\r
 494                 \r
 495                 y -= msglen / line_avail;       // Extra lines (y-- above handles the 1 line case)\r
 496                 SetCursorPos(y, 0);\r
 497                 printf("[%s] ", msg->Source);\r
 498                 \r
 499                 while(done < msglen) {\r
 500                         done += printf("%.*s", line_avail, msg->Data+done);\r
 501                         i ++;\r
 502                         SetCursorPos(y+i, prefix_len);\r
 503                 }\r
 504         }\r
 505 \r
 506         // Bottom line is rendered by the prompt\r
 507 }\r
 508 \r
 509 void Cmd_PRIVMSG(tServer *Server, const char *Dest, const char *Src, const char *Message)\r
 510 {\r
 511         Message_Append(Server, MSG_TYPE_STANDARD, Dest, Src, Message);\r
 512         //printf("<%s:%s:%s> %s\n", Server->Name, Dest, Src, Message);\r
 513 }\r
 514 \r
 515 /**\r
 516  */\r
 517 void ParseServerLine(tServer *Server, char *Line)\r
 518 {\r
 519          int    pos = 0;\r
 520         char    *ident, *cmd;\r
 521 \r
 522         _SysDebug("Server %s: Line = %s", Server->Name, Line);  \r
 523         \r
 524         // Message?\r
 525         if( *Line == ':' )\r
 526         {\r
 527                 ident = GetValue(Line, &pos);   // Ident (user or server)\r
 528                 cmd = GetValue(Line, &pos);\r
 529                 \r
 530                 // Numeric command\r
 531                 if( isdigit(cmd[0]) && isdigit(cmd[1]) && isdigit(cmd[2]) )\r
 532                 {\r
 533                         char    *user, *message;\r
 534                          int    num;\r
 535                         num  = (cmd[0] - '0') * 100;\r
 536                         num += (cmd[1] - '0') * 10;\r
 537                         num += (cmd[2] - '0') * 1;\r
 538                         \r
 539                         user = GetValue(Line, &pos);\r
 540                         \r
 541                         if( Line[pos] == ':' ) {\r
 542                                 message = Line + pos + 1;\r
 543                         }\r
 544                         else {\r
 545                                 message = GetValue(Line, &pos);\r
 546                         }\r
 547                         \r
 548                         switch(num)\r
 549                         {\r
 550                         case 353:       // /NAMES list\r
 551                                 // <user> = <channel> :list\r
 552 //                              GetValue(Line, &pos);   // '='\r
 553                                 user = GetValue(Line, &pos);    // Actually channel\r
 554                                 message = Line + pos + 1;       // List\r
 555                                 Message_AppendF(Server, MSG_TYPE_SERVER, user, "", "Names: %s", message);\r
 556                                 break;\r
 557                         case 366:       // end of /NAMES list\r
 558                                 // <user> <channel> :msg\r
 559                                 user = message;\r
 560                                 message = Line + pos + 1;\r
 561                                 Message_Append(Server, MSG_TYPE_SERVER, user, "", message);\r
 562                                 break;\r
 563                         case 372:       // MOTD Data\r
 564                         case 376:       // MOTD End\r
 565                                 \r
 566                         default:\r
 567                                 //printf("[%s] %i %s\n", Server->Name, num, message);\r
 568                                 Message_Append(Server, MSG_TYPE_SERVER, ident, user, message);\r
 569                                 break;\r
 570                         }\r
 571                 }\r
 572                 else if( strcmp(cmd, "NOTICE") == 0 )\r
 573                 {\r
 574                         char    *class, *message;\r
 575                         \r
 576                         class = GetValue(Line, &pos);\r
 577                         _SysDebug("NOTICE class='%s'", class);\r
 578                         \r
 579                         if( Line[pos] == ':' ) {\r
 580                                 message = Line + pos + 1;\r
 581                         }\r
 582                         else {\r
 583                                 message = GetValue(Line, &pos);\r
 584                         }\r
 585                         \r
 586                         //printf("[%s] NOTICE %s: %s\n", Server->Name, ident, message);\r
 587                         Message_Append(Server, MSG_TYPE_NOTICE, ident, "", message);\r
 588                 }\r
 589                 else if( strcmp(cmd, "PRIVMSG") == 0 )\r
 590                 {\r
 591                         char    *dest, *message;\r
 592                         dest = GetValue(Line, &pos);\r
 593                         \r
 594                         if( Line[pos] == ':' ) {\r
 595                                 message = Line + pos + 1;\r
 596                         }\r
 597                         else {\r
 598                                 message = GetValue(Line, &pos);\r
 599                         }\r
 600 //                      Cmd_PRIVMSG(Server, dest, ident, message);\r
 601                         Message_Append(Server, MSG_TYPE_STANDARD, ident, dest, message);\r
 602                 }\r
 603                 else if( strcmp(cmd, "JOIN" ) == 0 )\r
 604                 {\r
 605                         char    *channel;\r
 606                         channel = GetValue(Line, &pos) + 1;\r
 607                         Window_Create(Server, channel);\r
 608                 }\r
 609                 else\r
 610                 {\r
 611                         Message_AppendF(Server, MSG_TYPE_SERVER, "", "", "Unknown message %s (%s)\n", cmd, Line+pos);\r
 612                 }\r
 613         }\r
 614         else {          \r
 615                 cmd = GetValue(Line, &pos);\r
 616                 \r
 617                 if( strcmp(cmd, "PING") == 0 ) {\r
 618                         writef(Server->FD, "PONG %s\n", gsHostname);\r
 619                         \r
 620                 }\r
 621                 else {\r
 622                         // Command to client\r
 623                         Message_AppendF(NULL, MSG_TYPE_UNK, "", "", "Client Command: %s", Line);\r
 624                 }\r
 625         }\r
 626 }\r
 627 \r
 628 /**\r
 629  * \brief Process incoming lines from the server\r
 630  */\r
 631 int ProcessIncoming(tServer *Server)\r
 632 {       \r
 633         char    *ptr, *newline;\r
 634          int    len;\r
 635         \r
 636         // While there is data in the buffer, read it into user memory and \r
 637         // process it line by line\r
 638         // ioctl#8 on a TCP client gets the number of bytes in the recieve buffer\r
 639         // - Used to avoid blocking\r
 640         #if NON_BLOCK_READ\r
 641         while( (len = ioctl(Server->FD, 8, NULL)) > 0 )\r
 642         {\r
 643         #endif\r
 644                 // Read data\r
 645                 len = read(Server->FD, &Server->InBuf[Server->ReadPos], BUFSIZ - Server->ReadPos);\r
 646                 if( len == -1 ) {\r
 647                         return -1;\r
 648                 }\r
 649                 Server->InBuf[Server->ReadPos + len] = '\0';\r
 650                 \r
 651                 // Break into lines\r
 652                 ptr = Server->InBuf;\r
 653                 while( (newline = strchr(ptr, '\n')) )\r
 654                 {\r
 655                         *newline = '\0';\r
 656                         if( newline[-1] == '\r' )       newline[-1] = '\0';\r
 657                         ParseServerLine(Server, ptr);\r
 658                         ptr = newline + 1;\r
 659                 }\r
 660                 \r
 661                 // Handle incomplete lines\r
 662                 if( ptr - Server->InBuf < len + Server->ReadPos ) {\r
 663                         // Update the read position\r
 664                         // InBuf ReadPos    ptr          ReadPos+len\r
 665                         // | old | new used | new unused |\r
 666                         Server->ReadPos = len + Server->ReadPos - (ptr - Server->InBuf);\r
 667                         // Copy stuff back (moving "new unused" to the start of the buffer)\r
 668                         memcpy(Server->InBuf, ptr, Server->ReadPos);\r
 669                 }\r
 670                 else {\r
 671                         Server->ReadPos = 0;\r
 672                 }\r
 673         #if NON_BLOCK_READ\r
 674         }\r
 675         #endif\r
 676         \r
 677         return 0;\r
 678 }\r
 679 \r
 680 /**\r
 681  * \brief Write a formatted string to a file descriptor\r
 682  * \r
 683  */\r
 684 int writef(int FD, const char *Format, ...)\r
 685 {\r
 686         va_list args;\r
 687          int    len;\r
 688         \r
 689         va_start(args, Format);\r
 690         len = vsnprintf(NULL, 1000, Format, args);\r
 691         va_end(args);\r
 692         \r
 693         {\r
 694                 char    buf[len+1];\r
 695                 va_start(args, Format);\r
 696                 vsnprintf(buf, len+1, Format, args);\r
 697                 va_end(args);\r
 698                 \r
 699                 return write(FD, buf, len);\r
 700         }\r
 701 }\r
 702 \r
 703 /**\r
 704  * \brief Initialise a TCP connection to \a AddressString on port \a PortNumber\r
 705  */\r
 706 int OpenTCP(const char *AddressString, short PortNumber)\r
 707 {\r
 708          int    fd, addrType;\r
 709         char    addrBuffer[8];\r
 710         \r
 711         // Parse IP Address\r
 712         addrType = Net_ParseAddress(AddressString, addrBuffer);\r
 713         if( addrType == 0 ) {\r
 714                 fprintf(stderr, "Unable to parse '%s' as an IP address\n", AddressString);\r
 715                 _SysDebug("Unable to parse '%s' as an IP address\n", AddressString);\r
 716                 return -1;\r
 717         }\r
 718         \r
 719         // Finds the interface for the destination address\r
 720         fd = Net_OpenSocket(addrType, addrBuffer, "tcpc");\r
 721         if( fd == -1 ) {\r
 722                 fprintf(stderr, "Unable to open TCP Client to '%s'\n", AddressString);\r
 723                 _SysDebug("Unable to open TCP client to '%s'\n", AddressString);\r
 724                 return -1;\r
 725         }\r
 726         \r
 727         // Set remote port and address\r
 728 //      printf("Setting port and remote address\n");\r
 729         ioctl(fd, 5, &PortNumber);\r
 730         ioctl(fd, 6, addrBuffer);\r
 731         \r
 732         // Connect\r
 733 //      printf("Initiating connection\n");\r
 734         if( ioctl(fd, 7, NULL) == 0 ) {\r
 735                 // Shouldn't happen :(\r
 736                 fprintf(stderr, "Unable to start connection\n");\r
 737                 return -1;\r
 738         }\r
 739         \r
 740         // Return descriptor\r
 741         return fd;\r
 742 }\r
 743 \r
 744 /**\r
 745  * \brief Read a space-separated value from a string\r
 746  */\r
 747 char *GetValue(char *Src, int *Ofs)\r
 748 {\r
 749          int    pos = *Ofs;\r
 750         char    *ret = Src + pos;\r
 751         char    *end;\r
 752         \r
 753         if( !Src )      return NULL;\r
 754         \r
 755         while( *ret == ' ' )    ret ++;\r
 756         \r
 757         end = strchr(ret, ' ');\r
 758         if( end ) {\r
 759                 *end = '\0';\r
 760         }\r
 761         else {\r
 762                 end = ret + strlen(ret) - 1;\r
 763         }\r
 764         \r
 765         end ++ ;\r
 766         while( *ret == ' ' )    end ++;\r
 767         *Ofs = end - Src;\r
 768         \r
 769         return ret;\r
 770 }\r
 771 \r
 772 int SetCursorPos(int Row, int Col)\r
 773 {\r
 774          int    rv;\r
 775         if( Row == -1 ) {\r
 776                 Row = Col / giTerminal_Width;\r
 777                 Col = Col % giTerminal_Width;\r
 778         }\r
 779         rv = ioctl(1, 9, NULL); // Ugh, constants\r
 780         printf("\x1B[%i;%iH", Col, Row);\r
 781         return rv;\r
 782 }\r
 783 \r
 784 static inline int isdigit(int ch)\r
 785 {\r
 786         return '0' <= ch && ch < '9';\r
 787 }\r