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 #define BUFSIZ  1023\r
  12 \r
  13 // === TYPES ===\r
  14 typedef struct sServer {\r
  15         struct sServer  *Next;\r
  16          int    FD;\r
  17         char    InBuf[BUFSIZ+1];\r
  18          int    ReadPos;\r
  19         char    Name[];\r
  20 } tServer;\r
  21 \r
  22 typedef struct sMessage\r
  23 {\r
  24         struct sMessage *Next;\r
  25         time_t  Timestamp;\r
  26         tServer *Server;\r
  27          int    Type;\r
  28         char    *Source;        // Pointer into `Data`\r
  29         char    Data[];\r
  30 }       tMessage;\r
  31 \r
  32 typedef struct sWindow\r
  33 {\r
  34         struct sWindow  *Next;\r
  35         tMessage        *Messages;\r
  36         tServer *Server;        //!< Canoical server (can be NULL)\r
  37          int    ActivityLevel;\r
  38         char    Name[]; // Channel name / remote user\r
  39 }       tWindow;\r
  40 \r
  41 enum eMessageTypes\r
  42 {\r
  43         MSG_TYPE_NULL,\r
  44         MSG_TYPE_SERVER,        // Server message\r
  45         \r
  46         MSG_TYPE_NOTICE,        // NOTICE command\r
  47         MSG_TYPE_JOIN,  // JOIN command\r
  48         MSG_TYPE_PART,  // PART command\r
  49         MSG_TYPE_QUIT,  // QUIT command\r
  50         \r
  51         MSG_TYPE_STANDARD,      // Standard line\r
  52         MSG_TYPE_ACTION,        // /me\r
  53         \r
  54         MSG_TYPE_UNK\r
  55 };\r
  56 \r
  57 // === PROTOTYPES ===\r
  58  int    ParseArguments(int argc, const char *argv[]);\r
  59  int    ParseUserCommand(char *String);\r
  60 // --- \r
  61 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber);\r
  62 tMessage        *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...);\r
  63 tMessage        *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message);\r
  64 tWindow *Window_Create(tServer *Server, const char *Name);\r
  65 void    Redraw_Screen(void);\r
  66 \r
  67  int    ProcessIncoming(tServer *Server);\r
  68 // --- Helpers\r
  69  int    SetCursorPos(int Row, int Col);\r
  70  int    writef(int FD, const char *Format, ...);\r
  71  int    OpenTCP(const char *AddressString, short PortNumber);\r
  72 char    *GetValue(char *Str, int *Ofs);\r
  73 static inline int       isdigit(int ch);\r
  74 \r
  75 // === GLOBALS ===\r
  76 char    *gsUsername = "user";\r
  77 char    *gsHostname = "acess";\r
  78 char    *gsRealName = "Acess2 IRC Client";\r
  79 char    *gsNickname = "acess";\r
  80 tServer *gpServers;\r
  81 tWindow gWindow_Status = {\r
  82         NULL, NULL, NULL,       // No next, empty list, no server\r
  83         0, ""   // No activity, empty name (rendered as status)\r
  84 };\r
  85 tWindow *gpWindows = &gWindow_Status;\r
  86 tWindow *gpCurrentWindow = &gWindow_Status;\r
  87  int    giTerminal_Width = 80;\r
  88  int    giTerminal_Height = 25;\r
  89 \r
  90 // ==== CODE ====\r
  91 void ExitHandler(void)\r
  92 {\r
  93         printf("\x1B[?1047l");\r
  94         printf("Quit\n");\r
  95 }\r
  96 \r
  97 int main(int argc, const char *argv[], const char *envp[])\r
  98 {\r
  99          int    tmp;\r
 100         tReadline       *readline_info;\r
 101         \r
 102         // Parse Command line\r
 103         if( (tmp = ParseArguments(argc, argv)) )        return tmp;\r
 104         \r
 105         atexit(ExitHandler);\r
 106         \r
 107         giTerminal_Width = ioctl(1, 5, NULL);   // getset_width\r
 108         giTerminal_Height = ioctl(1, 6, NULL);  // getset_height\r
 109         \r
 110         printf("\x1B[?1047h");\r
 111         printf("\x1B[%i;%ir", 0, giTerminal_Height-1);\r
 112         \r
 113         SetCursorPos(giTerminal_Height-1, 0);\r
 114         printf("[(status)] ");\r
 115         \r
 116         // HACK: Static server entry\r
 117         // UCC (University [of Western Australia] Computer Club) IRC Server\r
 118         gWindow_Status.Server = Server_Connect( "UCC", "130.95.13.18", 6667 );\r
 119 //      gWindow_Status.Server = Server_Connect( "Freenode", "89.16.176.16", 6667 );\r
 120 //      gWindow_Status.Server = Server_Connect( "Host", "10.0.2.2", 6667 );\r
 121 //      gWindow_Status.Server = Server_Connect( "BitlBee", "192.168.1.34", 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                         close(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 int ParseUserCommand(char *String)\r
 211 {\r
 212         if( String[0] == '/' )\r
 213         {\r
 214                 char    *command;\r
 215                  int    pos = 0;\r
 216                 \r
 217                 command = GetValue(String, &pos);\r
 218                 \r
 219                 if( strcmp(command, "/join") == 0 )\r
 220                 {\r
 221                         char    *channel_name = GetValue(String, &pos);\r
 222                         \r
 223                         if( gpCurrentWindow->Server )\r
 224                         {\r
 225                                 writef(gpCurrentWindow->Server->FD, "JOIN :%s\n",  channel_name);\r
 226                         }\r
 227                 }\r
 228                 else if( strcmp(command, "/quit") == 0 )\r
 229                 {\r
 230                         char    *quit_message = String + pos;\r
 231                         tServer *srv;\r
 232                         \r
 233                         if( quit_message == NULL || quit_message[0] == '\0' )\r
 234                                 quit_message = "/quit - Acess2 IRC Client";\r
 235                         \r
 236                         for( srv = gpServers; srv; srv = srv->Next )\r
 237                         {\r
 238                                 writef(srv->FD, "QUIT :%s\n", quit_message);\r
 239                         }\r
 240                         \r
 241                         exit(0);\r
 242                 }\r
 243                 else if( strcmp(command, "/window") == 0 || strcmp(command, "/win") == 0 || strcmp(command, "/w") == 0 )\r
 244                 {\r
 245                         char    *window_id = GetValue(String, &pos);\r
 246                          int    window_num = atoi(window_id);\r
 247                         \r
 248                         if( window_num > 0 )\r
 249                         {\r
 250                                 tWindow *win;\r
 251                                 window_num --;  // Move to base 0\r
 252                                 // Get `window_num`th window\r
 253                                 for( win = gpWindows; win && window_num--; win = win->Next );\r
 254                                 if( win ) {\r
 255                                         gpCurrentWindow = win;\r
 256                                         Redraw_Screen();\r
 257                                 }\r
 258                                 // Otherwise, silently ignore\r
 259                         }\r
 260                         else\r
 261                         {\r
 262                                 tWindow *win;\r
 263                                 window_num = 1;\r
 264                                 for( win = gpWindows; win; win = win->Next, window_num ++ )\r
 265                                 {\r
 266                                         if( win->Name[0] ) {\r
 267                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 268                                                         "%i: %s/%s", window_num, win->Server->Name, win->Name);\r
 269                                         }\r
 270                                         else {\r
 271                                                 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",\r
 272                                                         "%i: (status)", window_num);\r
 273                                         }\r
 274                                 }\r
 275                         }\r
 276                 }\r
 277                 else\r
 278                 {\r
 279                         Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "", "Unknown command %s", command);\r
 280                 }\r
 281         }\r
 282         else\r
 283         {\r
 284                 // Message\r
 285                 // - Only send if server is valid and window name is non-empty\r
 286                 if( gpCurrentWindow->Server && gpCurrentWindow->Name[0] )\r
 287                 {\r
 288                         Message_Append(gpCurrentWindow->Server, MSG_TYPE_STANDARD,\r
 289                                 gsNickname, gpCurrentWindow->Name, String);\r
 290                         writef(gpCurrentWindow->Server->FD,\r
 291                                 "PRIVMSG %s :%s\n", gpCurrentWindow->Name,\r
 292                                 String\r
 293                                 );\r
 294                 }\r
 295         }\r
 296         \r
 297         return 0;\r
 298 }\r
 299 \r
 300 /**\r
 301  * \brief Connect to a server\r
 302  */\r
 303 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber)\r
 304 {\r
 305         tServer *ret;\r
 306         \r
 307         ret = calloc(1, sizeof(tServer) + strlen(Name) + 1);\r
 308         \r
 309         strcpy(ret->Name, Name);\r
 310         \r
 311         // Connect to the remove server\r
 312         ret->FD = OpenTCP( AddressString, PortNumber );\r
 313         if( ret->FD == -1 ) {\r
 314                 fprintf(stderr, "%s: Unable to create socket\n", Name);\r
 315                 return NULL;\r
 316         }\r
 317         \r
 318         // Append to open list\r
 319         ret->Next = gpServers;\r
 320         gpServers = ret;\r
 321         \r
 322         // Read some initial data\r
 323         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Connection opened");\r
 324         ProcessIncoming(ret);\r
 325         \r
 326         // Identify\r
 327         writef(ret->FD, "USER %s %s %s : %s\n", gsUsername, gsHostname, AddressString, gsRealName);\r
 328         writef(ret->FD, "NICK %s\n", gsNickname);\r
 329         Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Identified");\r
 330         //printf("%s: Identified\n", Name);\r
 331         \r
 332         return ret;\r
 333 }\r
 334 \r
 335 tMessage *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...)\r
 336 {\r
 337         va_list args;\r
 338          int    len;\r
 339         va_start(args, Message);\r
 340         len = vsnprintf(NULL, 1000, Message, args);\r
 341         {\r
 342                 char    buf[len+1];\r
 343                 vsnprintf(buf, len+1, Message, args);\r
 344                 return Message_Append(Server, Type, Source, Dest, buf);\r
 345         }\r
 346 }\r
 347 \r
 348 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message)\r
 349 {\r
 350         tMessage        *ret;\r
 351         tWindow *win = NULL;\r
 352          int    msgLen = strlen(Message);\r
 353         \r
 354         // NULL servers are internal messages\r
 355         if( Server == NULL || Source[0] == '\0' )\r
 356         {\r
 357                 win = &gWindow_Status;\r
 358         }\r
 359         // Determine if it's a channel or PM message\r
 360         else if( Dest[0] == '#' || Dest[0] == '&' )     // TODO: Better determining here\r
 361         {\r
 362                 tWindow *prev = NULL;\r
 363                 for(win = gpWindows; win; prev = win, win = win->Next)\r
 364                 {\r
 365                         if( win->Server == Server && strcmp(win->Name, Dest) == 0 )\r
 366                         {\r
 367                                 break;\r
 368                         }\r
 369                 }\r
 370                 if( !win ) {\r
 371                         win = Window_Create(Server, Dest);\r
 372                 }\r
 373         }\r
 374         #if 0\r
 375         else if( strcmp(Dest, Server->Nick) != 0 )\r
 376         {\r
 377                 // Umm... message for someone who isn't us?\r
 378                 win = &gWindow_Status;  // Stick it in the status window, just in case\r
 379         }\r
 380         #endif\r
 381         // Server message?\r
 382         else if( strchr(Source, '.') )  // TODO: And again, less hack please\r
 383         {\r
 384                 #if 1\r
 385                 for(win = gpWindows; win; win = win->Next)\r
 386                 {\r
 387                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 388                         {\r
 389                                 break;\r
 390                         }\r
 391                 }\r
 392                 #endif\r
 393                 if( !win ) {\r
 394                         win = &gWindow_Status;\r
 395                 }\r
 396                 \r
 397         }\r
 398         // Private message\r
 399         else\r
 400         {\r
 401                 for(win = gpWindows; win; win = win->Next)\r
 402                 {\r
 403                         if( win->Server == Server && strcmp(win->Name, Source) == 0 )\r
 404                         {\r
 405                                 break;\r
 406                         }\r
 407                 }\r
 408                 if( !win ) {\r
 409                         win = Window_Create(Server, Dest);\r
 410                 }\r
 411         }\r
 412         \r
 413         ret = malloc( sizeof(tMessage) + msgLen + 1 + strlen(Source) + 1 );\r
 414         ret->Source = ret->Data + msgLen + 1;\r
 415         strcpy(ret->Source, Source);\r
 416         strcpy(ret->Data, Message);\r
 417         ret->Type = Type;\r
 418         ret->Server = Server;\r
 419         \r
 420         // TODO: Append to window message list\r
 421         ret->Next = win->Messages;\r
 422         win->Messages = ret;\r
 423         \r
 424         //TODO: Set location\r
 425         \r
 426         {\r
 427                 int pos = SetCursorPos(giTerminal_Height-2, 0);\r
 428                 #if 1\r
 429                 if( win == gpCurrentWindow ) {\r
 430                          int    prefixlen = strlen(Source) + 3;\r
 431                          int    avail = giTerminal_Width - prefixlen;\r
 432                          int    msglen = strlen(Message);\r
 433                         printf("\x1B[T");       // Scroll down 1 (free space below)\r
 434                         printf("[%s] %.*s\n", Source, avail, Message);\r
 435                         while( msglen > avail ) {\r
 436                                 msglen -= avail;\r
 437                                 printf("\x1B[T");\r
 438                                 SetCursorPos(giTerminal_Height-2, prefixlen);\r
 439                                 printf("%.*s\n", avail, Message);\r
 440                         }\r
 441                 }\r
 442                 #else\r
 443                 if(win->Name[0])\r
 444                         printf("%s/%s [%s] %s\n", win->Server->Name, win->Name, Source, Message);\r
 445                 else\r
 446                         printf("(status) [%s] %s\n", Source, Message);\r
 447                 #endif\r
 448                 SetCursorPos(-1, pos);\r
 449         }\r
 450         \r
 451         return ret;\r
 452 }\r
 453 \r
 454 tWindow *Window_Create(tServer *Server, const char *Name)\r
 455 {\r
 456         tWindow *ret, *prev = NULL;\r
 457          int    num = 1;\r
 458         \r
 459         // Get the end of the list\r
 460         // TODO: Cache this instead\r
 461         for( ret = gpCurrentWindow; ret; prev = ret, ret = ret->Next )\r
 462                 num ++;\r
 463         \r
 464         ret = malloc(sizeof(tWindow) + strlen(Name) + 1);\r
 465         ret->Messages = NULL;\r
 466         ret->Server = Server;\r
 467         ret->ActivityLevel = 1;\r
 468         strcpy(ret->Name, Name);\r
 469         \r
 470         if( prev ) {\r
 471                 ret->Next = prev->Next;\r
 472                 prev->Next = ret;\r
 473         }\r
 474         else {  // Shouldn't happen really\r
 475                 ret->Next = gpWindows;\r
 476                 gpWindows = ret;\r
 477         }\r
 478         \r
 479 //      printf("Win %i %s:%s created\n", num, Server->Name, Name);\r
 480         \r
 481         return ret;\r
 482 }\r
 483 \r
 484 void Redraw_Screen(void)\r
 485 {\r
 486          int    y = 0;\r
 487         tMessage        *msg;\r
 488 \r
 489         printf("\x1B[2J");      // Clear screen\r
 490         printf("\x1B[0;0H");    // Reset cursor\r
 491 \r
 492         msg = gpCurrentWindow->Messages;\r
 493         \r
 494         // TODO: Title bar?\r
 495 \r
 496         // Note: This renders from the bottom up\r
 497         for( y = giTerminal_Height - 1; y -- && msg; msg = msg->Next)\r
 498         {\r
 499                  int    msglen = strlen(msg->Data);\r
 500                  int    prefix_len = 3 + strlen(msg->Source);\r
 501                  int    line_avail = giTerminal_Width - prefix_len;\r
 502                  int    i = 0, done = 0;\r
 503                 \r
 504                 y -= msglen / line_avail;       // Extra lines (y-- above handles the 1 line case)\r
 505                 SetCursorPos(y, 0);\r
 506                 printf("[%s] ", msg->Source);\r
 507                 \r
 508                 while(done < msglen) {\r
 509                         done += printf("%.*s", line_avail, msg->Data+done);\r
 510                         i ++;\r
 511                         SetCursorPos(y+i, prefix_len);\r
 512                 }\r
 513         }\r
 514 \r
 515         // Bottom line is rendered by the prompt\r
 516 }\r
 517 \r
 518 void Cmd_PRIVMSG(tServer *Server, const char *Dest, const char *Src, const char *Message)\r
 519 {\r
 520         Message_Append(Server, MSG_TYPE_STANDARD, Dest, Src, Message);\r
 521         //printf("<%s:%s:%s> %s\n", Server->Name, Dest, Src, Message);\r
 522 }\r
 523 \r
 524 /**\r
 525  */\r
 526 void ParseServerLine(tServer *Server, char *Line)\r
 527 {\r
 528          int    pos = 0;\r
 529         char    *ident, *cmd;\r
 530 \r
 531         _SysDebug("Server %s: Line = %s", Server->Name, Line);  \r
 532         \r
 533         // Message?\r
 534         if( *Line == ':' )\r
 535         {\r
 536                 ident = GetValue(Line, &pos);   // Ident (user or server)\r
 537                 cmd = GetValue(Line, &pos);\r
 538                 \r
 539                 // Numeric command\r
 540                 if( isdigit(cmd[0]) && isdigit(cmd[1]) && isdigit(cmd[2]) )\r
 541                 {\r
 542                         char    *user, *message;\r
 543                          int    num;\r
 544                         num  = (cmd[0] - '0') * 100;\r
 545                         num += (cmd[1] - '0') * 10;\r
 546                         num += (cmd[2] - '0') * 1;\r
 547                         \r
 548                         user = GetValue(Line, &pos);\r
 549                         \r
 550                         if( Line[pos] == ':' ) {\r
 551                                 message = Line + pos + 1;\r
 552                         }\r
 553                         else {\r
 554                                 message = GetValue(Line, &pos);\r
 555                         }\r
 556                         \r
 557                         switch(num)\r
 558                         {\r
 559                         case 353:       // /NAMES list\r
 560                                 // <user> = <channel> :list\r
 561 //                              GetValue(Line, &pos);   // '='\r
 562                                 user = GetValue(Line, &pos);    // Actually channel\r
 563                                 message = Line + pos + 1;       // List\r
 564                                 Message_AppendF(Server, MSG_TYPE_SERVER, user, "", "Names: %s", message);\r
 565                                 break;\r
 566                         case 366:       // end of /NAMES list\r
 567                                 // <user> <channel> :msg\r
 568                                 user = message;\r
 569                                 message = Line + pos + 1;\r
 570                                 Message_Append(Server, MSG_TYPE_SERVER, user, "", message);\r
 571                                 break;\r
 572                         case 372:       // MOTD Data\r
 573                         case 376:       // MOTD End\r
 574                                 \r
 575                         default:\r
 576                                 //printf("[%s] %i %s\n", Server->Name, num, message);\r
 577                                 Message_Append(Server, MSG_TYPE_SERVER, ident, user, message);\r
 578                                 break;\r
 579                         }\r
 580                 }\r
 581                 else if( strcmp(cmd, "PING") == 0 )\r
 582                 {\r
 583                         writef(Server->FD, "PONG %s\n", gsHostname);\r
 584                 }\r
 585                 else if( strcmp(cmd, "NOTICE") == 0 )\r
 586                 {\r
 587                         char    *class, *message;\r
 588                         \r
 589                         class = GetValue(Line, &pos);\r
 590                         \r
 591                         if( Line[pos] == ':' ) {\r
 592                                 message = Line + pos + 1;\r
 593                         }\r
 594                         else {\r
 595                                 message = GetValue(Line, &pos);\r
 596                         }\r
 597                         \r
 598                         //printf("[%s] NOTICE %s: %s\n", Server->Name, ident, message);\r
 599                         Message_Append(Server, MSG_TYPE_NOTICE, ident, "", message);\r
 600                 }\r
 601                 else if( strcmp(cmd, "PRIVMSG") == 0 )\r
 602                 {\r
 603                         char    *dest, *message;\r
 604                         dest = GetValue(Line, &pos);\r
 605                         \r
 606                         if( Line[pos] == ':' ) {\r
 607                                 message = Line + pos + 1;\r
 608                         }\r
 609                         else {\r
 610                                 message = GetValue(Line, &pos);\r
 611                         }\r
 612 //                      Cmd_PRIVMSG(Server, dest, ident, message);\r
 613                         Message_Append(Server, MSG_TYPE_STANDARD, ident, dest, message);\r
 614                 }\r
 615                 else if( strcmp(cmd, "JOIN" ) == 0 )\r
 616                 {\r
 617                         char    *channel;\r
 618                         channel = GetValue(Line, &pos) + 1;\r
 619                         Window_Create(Server, channel);\r
 620                 }\r
 621                 else\r
 622                 {\r
 623                         Message_AppendF(Server, MSG_TYPE_SERVER, "", "", "Unknown message %s (%s)\n", cmd, Line+pos);\r
 624                 }\r
 625         }\r
 626         else {\r
 627                 \r
 628                 // Command to client\r
 629                 Message_AppendF(NULL, MSG_TYPE_UNK, "", "", "Client Command: %s", Line);\r
 630         }\r
 631 }\r
 632 \r
 633 /**\r
 634  * \brief Process incoming lines from the server\r
 635  */\r
 636 int ProcessIncoming(tServer *Server)\r
 637 {       \r
 638         char    *ptr, *newline;\r
 639          int    len;\r
 640         \r
 641         // While there is data in the buffer, read it into user memory and \r
 642         // process it line by line\r
 643         // ioctl#8 on a TCP client gets the number of bytes in the recieve buffer\r
 644         // - Used to avoid blocking\r
 645         #if NON_BLOCK_READ\r
 646         while( (len = ioctl(Server->FD, 8, NULL)) > 0 )\r
 647         {\r
 648         #endif\r
 649                 // Read data\r
 650                 len = read(Server->FD, &Server->InBuf[Server->ReadPos], BUFSIZ - Server->ReadPos);\r
 651                 if( len == -1 ) {\r
 652                         return -1;\r
 653                 }\r
 654                 Server->InBuf[Server->ReadPos + len] = '\0';\r
 655                 \r
 656                 // Break into lines\r
 657                 ptr = Server->InBuf;\r
 658                 while( (newline = strchr(ptr, '\n')) )\r
 659                 {\r
 660                         *newline = '\0';\r
 661                         if( newline[-1] == '\r' )       newline[-1] = '\0';\r
 662                         ParseServerLine(Server, ptr);\r
 663                         ptr = newline + 1;\r
 664                 }\r
 665                 \r
 666                 // Handle incomplete lines\r
 667                 if( ptr - Server->InBuf < len + Server->ReadPos ) {\r
 668                         // Update the read position\r
 669                         // InBuf ReadPos    ptr          ReadPos+len\r
 670                         // | old | new used | new unused |\r
 671                         Server->ReadPos = len + Server->ReadPos - (ptr - Server->InBuf);\r
 672                         // Copy stuff back (moving "new unused" to the start of the buffer)\r
 673                         memcpy(Server->InBuf, ptr, Server->ReadPos);\r
 674                 }\r
 675                 else {\r
 676                         Server->ReadPos = 0;\r
 677                 }\r
 678         #if NON_BLOCK_READ\r
 679         }\r
 680         #endif\r
 681         \r
 682         return 0;\r
 683 }\r
 684 \r
 685 /**\r
 686  * \brief Write a formatted string to a file descriptor\r
 687  * \r
 688  */\r
 689 int writef(int FD, const char *Format, ...)\r
 690 {\r
 691         va_list args;\r
 692          int    len;\r
 693         \r
 694         va_start(args, Format);\r
 695         len = vsnprintf(NULL, 1000, Format, args);\r
 696         va_end(args);\r
 697         \r
 698         {\r
 699                 char    buf[len+1];\r
 700                 va_start(args, Format);\r
 701                 vsnprintf(buf, len+1, Format, args);\r
 702                 va_end(args);\r
 703                 \r
 704                 return write(FD, buf, len);\r
 705         }\r
 706 }\r
 707 \r
 708 /**\r
 709  * \brief Initialise a TCP connection to \a AddressString on port \a PortNumber\r
 710  */\r
 711 int OpenTCP(const char *AddressString, short PortNumber)\r
 712 {\r
 713          int    fd, addrType;\r
 714         char    *iface;\r
 715         char    addrBuffer[8];\r
 716         \r
 717         // Parse IP Address\r
 718         addrType = Net_ParseAddress(AddressString, addrBuffer);\r
 719         if( addrType == 0 ) {\r
 720                 fprintf(stderr, "Unable to parse '%s' as an IP address\n", AddressString);\r
 721                 return -1;\r
 722         }\r
 723         \r
 724         // Finds the interface for the destination address\r
 725         iface = Net_GetInterface(addrType, addrBuffer);\r
 726         if( iface == NULL ) {\r
 727                 fprintf(stderr, "Unable to find a route to '%s'\n", AddressString);\r
 728                 return -1;\r
 729         }\r
 730         \r
 731 //      printf("iface = '%s'\n", iface);\r
 732         \r
 733         // Open client socket\r
 734         // TODO: Move this out to libnet?\r
 735         {\r
 736                  int    len = snprintf(NULL, 100, "/Devices/ip/%s/tcpc", iface);\r
 737                 char    path[len+1];\r
 738                 snprintf(path, 100, "/Devices/ip/%s/tcpc", iface);\r
 739                 fd = open(path, OPENFLAG_READ|OPENFLAG_WRITE);\r
 740         }\r
 741         \r
 742         free(iface);\r
 743         \r
 744         if( fd == -1 ) {\r
 745                 fprintf(stderr, "Unable to open TCP Client for reading\n");\r
 746                 return -1;\r
 747         }\r
 748         \r
 749         // Set remote port and address\r
 750 //      printf("Setting port and remote address\n");\r
 751         ioctl(fd, 5, &PortNumber);\r
 752         ioctl(fd, 6, addrBuffer);\r
 753         \r
 754         // Connect\r
 755 //      printf("Initiating connection\n");\r
 756         if( ioctl(fd, 7, NULL) == 0 ) {\r
 757                 // Shouldn't happen :(\r
 758                 fprintf(stderr, "Unable to start connection\n");\r
 759                 return -1;\r
 760         }\r
 761         \r
 762         // Return descriptor\r
 763         return fd;\r
 764 }\r
 765 \r
 766 /**\r
 767  * \brief Read a space-separated value from a string\r
 768  */\r
 769 char *GetValue(char *Src, int *Ofs)\r
 770 {\r
 771          int    pos = *Ofs;\r
 772         char    *ret = Src + pos;\r
 773         char    *end;\r
 774         \r
 775         if( !Src )      return NULL;\r
 776         \r
 777         while( *ret == ' ' )    ret ++;\r
 778         \r
 779         end = strchr(ret, ' ');\r
 780         if( end ) {\r
 781                 *end = '\0';\r
 782         }\r
 783         else {\r
 784                 end = ret + strlen(ret) - 1;\r
 785         }\r
 786         \r
 787         end ++ ;\r
 788         while( *ret == ' ' )    end ++;\r
 789         *Ofs = end - Src;\r
 790         \r
 791         return ret;\r
 792 }\r
 793 \r
 794 int SetCursorPos(int Row, int Col)\r
 795 {\r
 796          int    rv;\r
 797         if( Row == -1 ) {\r
 798                 Row = Col / giTerminal_Width;\r
 799                 Col = Col % giTerminal_Width;\r
 800         }\r
 801         rv = ioctl(1, 9, NULL); // Ugh, constants\r
 802         printf("\x1B[%i;%iH", Col, Row);\r
 803         return rv;\r
 804 }\r
 805 \r
 806 static inline int isdigit(int ch)\r
 807 {\r
 808         return '0' <= ch && ch < '9';\r
 809 }\r