4 #include <acess/sys.h>
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9 #include <readline.h>
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14 typedef struct sServer {
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15 struct sServer *Next;
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17 char InBuf[BUFSIZ+1];
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22 typedef struct sMessage
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24 struct sMessage *Next;
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28 char *Source; // Pointer into `Data`
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32 typedef struct sWindow
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34 struct sWindow *Next;
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36 tServer *Server; //!< Canoical server (can be NULL)
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38 char Name[]; // Channel name / remote user
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44 MSG_TYPE_SERVER, // Server message
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46 MSG_TYPE_NOTICE, // NOTICE command
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47 MSG_TYPE_JOIN, // JOIN command
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48 MSG_TYPE_PART, // PART command
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49 MSG_TYPE_QUIT, // QUIT command
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51 MSG_TYPE_STANDARD, // Standard line
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52 MSG_TYPE_ACTION, // /me
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57 // === PROTOTYPES ===
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58 int ParseArguments(int argc, const char *argv[]);
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59 int ParseUserCommand(char *String);
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61 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber);
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62 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message);
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63 tWindow *Window_Create(tServer *Server, const char *Name);
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65 int ProcessIncoming(tServer *Server);
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67 int SetCursorPos(int Row, int Col);
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68 int writef(int FD, const char *Format, ...);
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69 int OpenTCP(const char *AddressString, short PortNumber);
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70 char *GetValue(char *Str, int *Ofs);
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71 static inline int isdigit(int ch);
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74 char *gsUsername = "user";
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75 char *gsHostname = "acess";
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76 char *gsRealName = "Acess2 IRC Client";
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77 char *gsNickname = "acess";
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79 tWindow gWindow_Status = {
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80 NULL, NULL, NULL, // No next, empty list, no server
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81 0, "" // No activity, empty name (rendered as status)
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83 tWindow *gpWindows = &gWindow_Status;
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84 tWindow *gpCurrentWindow = &gWindow_Status;
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85 int giTerminal_Width = 80;
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86 int giTerminal_Height = 25;
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89 void ExitHandler(void)
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91 printf("\x1B[?1047l");
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94 int main(int argc, const char *argv[], const char *envp[])
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97 tReadline *readline_info;
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99 // Parse Command line
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100 if( (tmp = ParseArguments(argc, argv)) ) return tmp;
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102 atexit(ExitHandler);
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104 giTerminal_Width = ioctl(1, 5, NULL); // getset_width
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105 giTerminal_Height = ioctl(1, 6, NULL); // getset_height
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107 printf("\x1B[?1047h");
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108 printf("\x1B[%i;%ir", 0, giTerminal_Height-1);
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110 // HACK: Static server entry
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111 // UCC (University [of Western Australia] Computer Club) IRC Server
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112 gWindow_Status.Server = Server_Connect( "UCC", "130.95.13.18", 6667 );
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114 if( !gWindow_Status.Server )
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117 readline_info = Readline_Init(1);
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119 SetCursorPos(giTerminal_Height-1, 0);
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120 printf("[(status)] ");
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124 fd_set readfds, errorfds;
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129 FD_ZERO(&errorfds);
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130 FD_SET(0, &readfds); // stdin
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132 // Fill server FDs in fd_set
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133 for( srv = gpServers; srv; srv = srv->Next )
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135 FD_SET(srv->FD, &readfds);
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136 FD_SET(srv->FD, &errorfds);
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137 if( srv->FD > maxFD )
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141 rv = select(maxFD+1, &readfds, 0, &errorfds, NULL);
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142 if( rv == -1 ) break;
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144 if(FD_ISSET(0, &readfds))
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147 char *cmd = Readline_NonBlock(readline_info);
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152 ParseUserCommand(cmd);
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156 SetCursorPos(giTerminal_Height-1, 0);
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157 if( gpCurrentWindow->Name[0] )
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158 printf("[%s:%s] ", gpCurrentWindow->Server->Name, gpCurrentWindow->Name);
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160 printf("[(status)] ");
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165 for( srv = gpServers; srv; srv = srv->Next )
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167 if(FD_ISSET(srv->FD, &readfds))
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169 if( ProcessIncoming(srv) != 0 ) {
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175 if(FD_ISSET(srv->FD, &errorfds))
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187 for( srv = gpServers; srv; srv = srv->Next )
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194 * \todo Actually implement correctly :)
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196 int ParseArguments(int argc, const char *argv[])
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201 int ParseUserCommand(char *String)
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203 if( String[0] == '/' )
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208 command = GetValue(String, &pos);
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210 if( strcmp(command, "/join") == 0 )
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212 char *channel_name = GetValue(String, &pos);
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214 if( gpCurrentWindow->Server )
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216 writef(gpCurrentWindow->Server->FD, "JOIN :%s\n", channel_name);
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219 else if( strcmp(command, "/quit") == 0 )
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221 char *quit_message = GetValue(String, &pos);
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224 if( quit_message == NULL || quit_message[0] == '\0' )
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225 quit_message = "/quit - Acess2 IRC Client";
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227 for( srv = gpServers; srv; srv = srv->Next )
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229 writef(srv->FD, "QUIT :%s\n", quit_message);
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234 else if( strcmp(command, "/window") == 0 || strcmp(command, "/win") == 0 || strcmp(command, "/w") == 0 )
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236 char *window_id = GetValue(String, &pos);
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237 int window_num = atoi(window_id);
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239 if( window_num > 0 )
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242 window_num --; // Move to base 0
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243 // Get `window_num`th window
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244 for( win = gpWindows; win && window_num--; win = win->Next );
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246 gpCurrentWindow = win;
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248 // Otherwise, silently ignore
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254 for( win = gpWindows; win; win = win->Next, window_num ++ )
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256 char tmp[snprintf(NULL, 1000, "%i: %s/%s", window_num, win->Server->Name, win->Name)+1];
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257 snprintf(tmp, 1000, "%i: %s/%s", window_num, win->Server->Name, win->Name);
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258 Message_Append(NULL, MSG_TYPE_SERVER, "client", "", tmp);
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264 int len = snprintf(NULL, 0, "Unknown command %s", command);
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266 snprintf(buf, len+1, "Unknown command %s", command);
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267 Message_Append(NULL, MSG_TYPE_SERVER, "client", "", buf);
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273 // - Only send if server is valid and window name is non-empty
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274 if( gpCurrentWindow->Server && gpCurrentWindow->Name[0] )
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276 writef(gpCurrentWindow->Server->FD,
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277 "PRIVMSG %s :%s\n", gpCurrentWindow->Name,
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287 * \brief Connect to a server
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289 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber)
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293 ret = calloc(1, sizeof(tServer) + strlen(Name) + 1);
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295 strcpy(ret->Name, Name);
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297 // Connect to the remove server
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298 ret->FD = OpenTCP( AddressString, PortNumber );
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299 if( ret->FD == -1 ) {
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300 fprintf(stderr, "%s: Unable to create socket\n", Name);
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304 // Append to open list
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305 ret->Next = gpServers;
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308 // Read some initial data
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309 printf("%s: Connection opened\n", Name);
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310 ProcessIncoming(ret);
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313 writef(ret->FD, "USER %s %s %s : %s\n", gsUsername, gsHostname, AddressString, gsRealName);
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314 writef(ret->FD, "NICK %s\n", gsNickname);
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315 printf("%s: Identified\n", Name);
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320 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message)
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323 tWindow *win = NULL;
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324 int msgLen = strlen(Message);
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326 // NULL servers are internal messages
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327 if( Server == NULL )
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329 win = &gWindow_Status;
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331 // Determine if it's a channel or PM message
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332 else if( Dest[0] == '#' || Dest[0] == '&' ) // TODO: Better determining here
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334 tWindow *prev = NULL;
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335 for(win = gpWindows; win; prev = win, win = win->Next)
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337 if( win->Server == Server && strcmp(win->Name, Dest) == 0 )
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343 win = Window_Create(Server, Dest);
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347 else if( strcmp(Dest, Server->Nick) != 0 )
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349 // Umm... message for someone who isn't us?
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350 win = &gWindow_Status; // Stick it in the status window, just in case
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354 else if( strchr(Source, '.') ) // TODO: And again, less hack please
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357 for(win = gpWindows; win; win = win->Next)
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359 if( win->Server == Server && strcmp(win->Name, Source) == 0 )
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366 win = &gWindow_Status;
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373 for(win = gpWindows; win; win = win->Next)
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375 if( win->Server == Server && strcmp(win->Name, Source) == 0 )
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381 win = Window_Create(Server, Dest);
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385 ret = malloc( sizeof(tMessage) + msgLen + 1 + strlen(Source) + 1 );
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386 ret->Source = ret->Data + msgLen + 1;
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387 strcpy(ret->Source, Source);
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388 strcpy(ret->Data, Message);
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390 ret->Server = Server;
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392 // TODO: Append to window message list
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393 ret->Next = win->Messages;
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394 win->Messages = ret;
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396 //TODO: Set location
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399 int pos = SetCursorPos(giTerminal_Height-2, 0);
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400 printf("\x1B[T"); // Scroll down 1 (free space below)
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402 if( win == gpCurrentWindow ) {
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403 printf("[%s] %s\n", Source, Message);
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407 printf("%s/%s [%s] %s\n", win->Server->Name, win->Name, Source, Message);
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409 printf("(status) [%s] %s\n", Source, Message);
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411 SetCursorPos(-1, pos);
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417 tWindow *Window_Create(tServer *Server, const char *Name)
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419 tWindow *ret, *prev = NULL;
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422 // Get the end of the list
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423 // TODO: Cache this instead
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424 for( ret = gpCurrentWindow; ret; prev = ret, ret = ret->Next )
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427 ret = malloc(sizeof(tWindow) + strlen(Name) + 1);
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428 ret->Messages = NULL;
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429 ret->Server = Server;
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430 ret->ActivityLevel = 1;
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431 strcpy(ret->Name, Name);
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434 ret->Next = prev->Next;
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437 else { // Shouldn't happen really
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438 ret->Next = gpWindows;
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442 // printf("Win %i %s:%s created\n", num, Server->Name, Name);
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447 void Cmd_PRIVMSG(tServer *Server, const char *Dest, const char *Src, const char *Message)
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449 Message_Append(Server, MSG_TYPE_STANDARD, Dest, Src, Message);
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450 //printf("<%s:%s:%s> %s\n", Server->Name, Dest, Src, Message);
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455 void ParseServerLine(tServer *Server, char *Line)
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463 ident = GetValue(Line, &pos); // Ident (user or server)
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464 cmd = GetValue(Line, &pos);
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467 if( isdigit(cmd[0]) && isdigit(cmd[1]) && isdigit(cmd[2]) )
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469 char *user, *message;
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471 num = (cmd[0] - '0') * 100;
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472 num += (cmd[1] - '0') * 10;
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473 num += (cmd[2] - '0') * 1;
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475 user = GetValue(Line, &pos);
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477 if( Line[pos] == ':' ) {
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478 message = Line + pos + 1;
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481 message = GetValue(Line, &pos);
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487 //printf("[%s] %i %s\n", Server->Name, num, message);
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488 Message_Append(Server, MSG_TYPE_SERVER, ident, user, message);
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492 else if( strcmp(cmd, "NOTICE") == 0 )
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494 char *class, *message;
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496 class = GetValue(Line, &pos);
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498 if( Line[pos] == ':' ) {
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499 message = Line + pos + 1;
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502 message = GetValue(Line, &pos);
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505 //printf("[%s] NOTICE %s: %s\n", Server->Name, ident, message);
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506 Message_Append(Server, MSG_TYPE_NOTICE, ident, "", message);
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508 else if( strcmp(cmd, "PRIVMSG") == 0 )
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510 char *dest, *message;
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511 dest = GetValue(Line, &pos);
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513 if( Line[pos] == ':' ) {
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514 message = Line + pos + 1;
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517 message = GetValue(Line, &pos);
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519 Cmd_PRIVMSG(Server, dest, ident, message);
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520 Message_Append(Server, MSG_TYPE_STANDARD, ident, dest, message);
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522 else if( strcmp(cmd, "JOIN" ) == 0 )
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525 channel = GetValue(Line, &pos) + 1;
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526 Window_Create(Server, channel);
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530 printf("Unknown message %s (%s)\n", cmd, Line+pos);
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535 // Command to client
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536 printf("Client Command: %s", Line);
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541 * \brief Process incoming lines from the server
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543 int ProcessIncoming(tServer *Server)
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545 char *ptr, *newline;
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548 // While there is data in the buffer, read it into user memory and
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549 // process it line by line
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550 // ioctl#8 on a TCP client gets the number of bytes in the recieve buffer
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551 // - Used to avoid blocking
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553 while( (len = ioctl(Server->FD, 8, NULL)) > 0 )
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557 len = read(Server->FD, BUFSIZ - Server->ReadPos, &Server->InBuf[Server->ReadPos]);
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561 Server->InBuf[Server->ReadPos + len] = '\0';
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563 // Break into lines
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564 ptr = Server->InBuf;
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565 while( (newline = strchr(ptr, '\n')) )
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568 if( newline[-1] == '\r' ) newline[-1] = '\0';
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569 ParseServerLine(Server, ptr);
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573 // Handle incomplete lines
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574 if( ptr - Server->InBuf < len + Server->ReadPos ) {
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575 // Update the read position
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576 // InBuf ReadPos ptr ReadPos+len
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577 // | old | new used | new unused |
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578 Server->ReadPos = len + Server->ReadPos - (ptr - Server->InBuf);
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579 // Copy stuff back (moving "new unused" to the start of the buffer)
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580 memcpy(Server->InBuf, ptr, Server->ReadPos);
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583 Server->ReadPos = 0;
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593 * \brief Write a formatted string to a file descriptor
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596 int writef(int FD, const char *Format, ...)
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601 va_start(args, Format);
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602 len = vsnprintf(NULL, 1000, Format, args);
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607 va_start(args, Format);
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608 vsnprintf(buf, len+1, Format, args);
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611 return write(FD, len, buf);
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616 * \brief Initialise a TCP connection to \a AddressString on port \a PortNumber
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618 int OpenTCP(const char *AddressString, short PortNumber)
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622 char addrBuffer[8];
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624 // Parse IP Address
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625 addrType = Net_ParseAddress(AddressString, addrBuffer);
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626 if( addrType == 0 ) {
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627 fprintf(stderr, "Unable to parse '%s' as an IP address\n", AddressString);
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631 // Finds the interface for the destination address
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632 iface = Net_GetInterface(addrType, addrBuffer);
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633 if( iface == NULL ) {
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634 fprintf(stderr, "Unable to find a route to '%s'\n", AddressString);
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638 printf("iface = '%s'\n", iface);
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640 // Open client socket
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641 // TODO: Move this out to libnet?
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643 int len = snprintf(NULL, 100, "/Devices/ip/%s/tcpc", iface);
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645 snprintf(path, 100, "/Devices/ip/%s/tcpc", iface);
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646 fd = open(path, OPENFLAG_READ|OPENFLAG_WRITE);
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652 fprintf(stderr, "Unable to open TCP Client for reading\n");
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656 // Set remote port and address
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657 printf("Setting port and remote address\n");
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658 ioctl(fd, 5, &PortNumber);
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659 ioctl(fd, 6, addrBuffer);
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662 printf("Initiating connection\n");
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663 if( ioctl(fd, 7, NULL) == 0 ) {
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664 // Shouldn't happen :(
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665 fprintf(stderr, "Unable to start connection\n");
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669 // Return descriptor
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674 * \brief Read a space-separated value from a string
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676 char *GetValue(char *Src, int *Ofs)
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679 char *ret = Src + pos;
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682 if( !Src ) return NULL;
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684 while( *ret == ' ' ) ret ++;
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686 end = strchr(ret, ' ');
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691 end = ret + strlen(ret) - 1;
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695 while( *ret == ' ' ) end ++;
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701 int SetCursorPos(int Row, int Col)
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704 Row = Col / giTerminal_Width;
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705 Col = Col % giTerminal_Width;
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707 printf("\x1B[%i;%iH", Col, Row);
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708 return ioctl(1, 9, NULL); // Ugh, constants
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711 static inline int isdigit(int ch)
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713 return '0' <= ch && ch < '9';
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