X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FApplications%2FCLIShell_src%2Fmain.c;h=d6c40d65a4db47e3ffb24e7c8a680bf73839d4ac;hb=a8067bafb36f98612767060db856cd6bf36ef940;hp=28d476f3ec08fc15bc86ea0105218fddd2188fed;hpb=17e16b3110b4c5124b0707435e0427993d696545;p=tpg%2Facess2.git

diff --git a/Usermode/Applications/CLIShell_src/main.c b/Usermode/Applications/CLIShell_src/main.c
index 28d476f3..d6c40d65 100644
--- a/Usermode/Applications/CLIShell_src/main.c
+++ b/Usermode/Applications/CLIShell_src/main.c
@@ -1,9 +1,10 @@
 /*
- AcessOS Shell Version 2
-- Based on IOOS CLI Shell
-*/
+ * AcessOS Shell Version 3
+ */
 #include <acess/sys.h>
 #include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
 #include "header.h"
 
 #define _stdin	0
@@ -13,26 +14,31 @@
 // ==== PROTOTYPES ====
 char	*ReadCommandLine(int *Length);
 void	Parse_Args(char *str, char **dest);
-void	Command_Colour(int argc, char **argv);
+void	CallCommand(char **Args);
+void	Command_Logout(int argc, char **argv);
 void	Command_Clear(int argc, char **argv);
-//void	Command_Ls(int argc, char **argv);
+void	Command_Help(int argc, char **argv);
 void	Command_Cd(int argc, char **argv);
-//void	Command_Cat(int argc, char **argv);
+void	Command_Dir(int argc, char **argv);
 
 // ==== CONSTANT GLOBALS ====
-char	*cCOLOUR_NAMES[8] = {"black", "red", "green", "yellow", "blue", "magenta", "cyan", "white"};
 struct	{
 	char	*name;
 	void	(*fcn)(int argc, char **argv);
 }	cBUILTINS[] = {
-	{"colour", Command_Colour}, {"clear", Command_Clear}, {"cd", Command_Cd}
+	{"exit", Command_Logout},	{"logout", Command_Logout},
+	{"help", Command_Help}, {"clear", Command_Clear},
+	{"cd", Command_Cd}, {"dir", Command_Dir}
 };
+static char	*cDEFAULT_PATH[] = {"/Acess/Bin"};
 #define	BUILTIN_COUNT	(sizeof(cBUILTINS)/sizeof(cBUILTINS[0]))
 
 // ==== LOCAL VARIABLES ====
+ int	giNumPathDirs = 1;
+char	**gasPathDirs = cDEFAULT_PATH;
+char	**gasEnvironment;
 char	gsCommandBuffer[1024];
-char	*gsCurrentDirectory = "/";
-char	gsTmpBuffer[1024];
+char	*gsCurrentDirectory = NULL;
 char	**gasCommandHistory;
  int	giLastCommand = 0;
  int	giCommandSpace = 0;
@@ -41,17 +47,28 @@ char	**gasCommandHistory;
 int main(int argc, char *argv[], char *envp[])
 {
 	char	*sCommandStr;
-	char	*saArgs[32];
+	char	*saArgs[32] = {0};
 	 int	length = 0;
-	 int	pid = -1;
+	 int	i;
 	 int	iArgCount = 0;
 	 int	bCached = 1;
-	t_sysFInfo	info;
 	
-	//Command_Clear(0, NULL);
+	gasEnvironment = envp;
+	
+	Command_Clear(0, NULL);
+	
+	{
+		char	*tmp = getenv("CWD");
+		if(tmp) {
+			gsCurrentDirectory = malloc(strlen(tmp)+1);
+			strcpy(gsCurrentDirectory, tmp);
+		} else {
+			gsCurrentDirectory = malloc(2);
+			strcpy(gsCurrentDirectory, "/");
+		}
+	}	
 	
-	write(_stdout, 36, "AcessOS/AcessBasic Shell Version 2\n");
-	write(_stdout, 30, " Based on CLI Shell for IOOS\n");
+	write(_stdout, 22, "Acess Shell Version 3\n");
 	write(_stdout,  2, "\n");
 	for(;;)
 	{
@@ -59,12 +76,18 @@ int main(int argc, char *argv[], char *envp[])
 		if(saArgs[0])	free(saArgs);
 		if(!bCached)	free(sCommandStr);
 		bCached = 0;
+		
 		write(_stdout, strlen(gsCurrentDirectory), gsCurrentDirectory);
-		write(_stdout, 3, "$ ");
+		write(_stdout, 2, "$ ");
 		
 		// Read Command line
 		sCommandStr = ReadCommandLine( &length );
 		
+		if(!sCommandStr) {
+			write(_stdout, 25, "PANIC: Out of heap space\n");
+			return -1;
+		}
+		
 		// Check if the command should be cached
 		if(gasCommandHistory == NULL || strcmp(sCommandStr, gasCommandHistory[giLastCommand]) != 0)
 		{
@@ -88,44 +111,18 @@ int main(int argc, char *argv[], char *envp[])
 		if(saArgs[1][0] == '\0')	continue;
 		
 		// Check Built-In Commands
-		//  [HACK] Mem Usage - Use Length in place of `i'
-		for(length=0;length<BUILTIN_COUNT;length++)
+		for( i = 0; i < BUILTIN_COUNT; i++ )
 		{
-			if(strcmp(saArgs[1], cBUILTINS[length].name) == 0)
+			if( strcmp(saArgs[1], cBUILTINS[i].name) == 0 )
 			{
-				cBUILTINS[length].fcn(iArgCount-1, &saArgs[1]);
+				cBUILTINS[i].fcn(iArgCount-1, &saArgs[1]);
 				break;
 			}
-		}
-		// Calling a file
-		if(length == BUILTIN_COUNT)
-		{
-			GeneratePath(saArgs[1], gsCurrentDirectory, gsTmpBuffer);
-			// Use length in place of fp
-			length = open(gsTmpBuffer, 0);
-			// Check file existence
-			if(length == -1) {
-				Print("Unknown Command: `");Print(saArgs[1]);Print("'\n");	// Error Message
-				continue;
-			}
-			// Check if the file is a directory
-			finfo( length, &info );
-			close( length );
-			if(info.flags & FILEFLAG_DIRECTORY) {
-				Print("`");Print(saArgs[1]);	// Error Message
-				Print("' is a directory.\n");
-				continue;
-			}
-			pid = clone(CLONE_VM, 0);
-			if(pid == 0)	execve(gsTmpBuffer, &saArgs[1], NULL);
-			if(pid <= 0) {
-				Print("Unablt to create process: `");Print(gsTmpBuffer);Print("'\n");	// Error Message
-				//SysDebug("pid = %i\n", pid);
-			}
-			else {
-				//waitpid(pid, K_WAITPID_DIE);
-			}
 		}
+		if(i != BUILTIN_COUNT)	continue;
+		
+		// Shall we?
+		CallCommand( &saArgs[1] );
 	}
 }
 
@@ -138,17 +135,62 @@ char *ReadCommandLine(int *Length)
 	char	*ret;
 	 int	len, pos, space = 1023;
 	char	ch;
+	// int	scrollbackPos = giLastCommand;
 	 
 	// Preset Variables
 	ret = malloc( space+1 );
-	len = 0;
-	pos = 0;
+	if(!ret)	return NULL;
+	len = 0;	pos = 0;
 		
 	// Read In Command Line
 	do {
 		read(_stdin, 1, &ch);	// Read Character from stdin (read is a blocking call)
-		// Ignore control characters
-		if(ch < 0)	continue;
+		// Control characters
+		if(ch == '\x1B') {
+			read(_stdin, 1, &ch);	// Read control character
+			switch(ch)
+			{
+			//case 'D':	if(pos)	pos--;	break;
+			//case 'C':	if(pos<len)	pos++;	break;
+			case '[':
+				read(_stdin, 1, &ch);	// Read control character
+				switch(ch)
+				{
+				#if 0
+				case 'A':	// Up
+					if( scrollbackPos > 0 )	break;
+					
+					free(ret);
+					ret = strdup( gasCommandHistory[--scrollbackPos] );
+					
+					len = strlen(ret);
+					while(pos--)	write(_stdout, 3, "\x1B[D");
+					while(pos++ < len)	write(_stdout, 3, "\x1B[C");
+					break;
+				case 'B':	// Down
+					if( scrollbackPos < giLastCommand-1 )	break;
+					free(ret);
+					ret = strdup( gasCommandHistory[++scrollbackPos] );
+					
+					len = strlen(ret);
+					while(pos--)	write(_stdout, 3, "\x1B[D");
+					while(pos++ < len)	write(_stdout, 3, "\x1B[C");
+					break;
+				#endif
+				case 'D':	// Left
+					if(pos == 0)	break;
+					pos --;
+					write(_stdout, 3, "\x1B[D");
+					break;
+				case 'C':	// Right
+					if(pos == len-1)	break;
+					pos++;
+					write(_stdout, 3, "\x1B[C");
+					break;
+				}
+			}
+			continue;
+		}
 		// Backspace
 		if(ch == '\b') {
 			if(len <= 0)		continue;	// Protect against underflows
@@ -162,6 +204,13 @@ char *ReadCommandLine(int *Length)
 			write(_stdout, 1, &ch);
 			continue;
 		}
+		// Tab
+		if(ch == '\t') {
+			//TODO: Implement Tab-Completion
+			//Currently just ignore tabs
+			continue;
+		}
+		
 		// Expand Buffer
 		if(len > space) {
 			space += 256;
@@ -193,6 +242,12 @@ void Parse_Args(char *str, char **dest)
 	 int	i = 1;
 	char	*buf = malloc( strlen(str) + 1 );
 	
+	if(buf == NULL) {
+		dest[0] = NULL;
+		Print("Parse_Args: Out of heap space!\n");
+		return ;
+	}
+	
 	strcpy(buf, str);
 	dest[0] = buf;
 	
@@ -224,73 +279,120 @@ void Parse_Args(char *str, char **dest)
 }
 
 /**
- * \fn void Command_Colour(int argc, char **argv)
- * \brief 
+ * \fn void CallCommand(char **Args)
  */
-void Command_Colour(int argc, char **argv)
+void CallCommand(char **Args)
 {
-	int fg, bg;
-	char	clrStr[6] = "\x1B[37m";
+	t_sysFInfo	info;
+	 int	pid = -1;
+	 int	fd = 0;
+	char	sTmpBuffer[1024];
+	char	*exefile = Args[0];
 	
-	// Verify Arg Count
-	if(argc < 2)
+	if(exefile[0] == '/'
+	|| (exefile[0] == '.' && exefile[1] == '/')
+	|| (exefile[0] == '.' && exefile[1] == '.' && exefile[2] == '/')
+		)
 	{
-		Print("Please specify a colour\n");
-		goto usage;
-	}
-	
-	// Check Colour
-	for(fg=0;fg<8;fg++)
-		if(strcmp(cCOLOUR_NAMES[fg], argv[1]) == 0)
-			break;
-
-	// Foreground a valid colour
-	if(fg == 8) {
-		Print("Unknown Colour '");Print(argv[1]);Print("'\n");
-		goto usage;
+		GeneratePath(exefile, gsCurrentDirectory, sTmpBuffer);
+		// Check file existence
+		fd = open(sTmpBuffer, OPENFLAG_EXEC);
+		if(fd == -1) {
+			Print("Unknown Command: `");Print(Args[0]);Print("'\n");	// Error Message
+			return ;
+		}
+		
+		// Get File info and close file
+		finfo( fd, &info, 0 );
+		close( fd );
+		
+		// Check if the file is a directory
+		if(info.flags & FILEFLAG_DIRECTORY) {
+			Print("`");Print(sTmpBuffer);	// Error Message
+			Print("' is a directory.\n");
+			return ;
+		}
 	}
-	// Set Foreground
-	clrStr[3] = '0' + fg;
-	write(_stdout, 6, clrStr);
-	
-	// Need to Set Background?
-	if(argc > 2)
+	else
 	{
-		for(bg=0;bg<8;bg++)
-			if(strcmp(cCOLOUR_NAMES[bg], argv[2]) == 0)
-				break;
-	
-		// Valid colour
-		if(bg == 8)
+		 int	i;
+		
+		// Check all components of $PATH
+		for( i = 0; i < giNumPathDirs; i++ )
 		{
-			Print("Unknown Colour '");Print(argv[2]);Print("'\n");
-			goto usage;
+			GeneratePath(exefile, gasPathDirs[i], sTmpBuffer);
+			fd = open(sTmpBuffer, OPENFLAG_EXEC);
+			if(fd == -1)	continue;
+			finfo( fd, &info, 0 );
+			close( fd );
+			if(info.flags & FILEFLAG_DIRECTORY)	continue;
+			// Woohoo! We found a valid command
+			break;
+		}
+		
+		// Exhausted path directories
+		if( i == giNumPathDirs ) {
+			Print("Unknown Command: `");Print(exefile);Print("'\n");
+			return ;
 		}
+	}
 	
-		clrStr[2] = '4';
-		clrStr[3] = '0' + bg;
-		write(_stdout, 6, clrStr);
+	// Create new process
+	pid = clone(CLONE_VM, 0);
+	// Start Task
+	if(pid == 0)
+		execve(sTmpBuffer, Args, gasEnvironment);
+	if(pid <= 0) {
+		Print("Unablt to create process: `");Print(sTmpBuffer);Print("'\n");	// Error Message
 	}
-	// Return
-	return;
-
-	// Function Usage (Requested via a Goto (I know it's ugly))
-usage:
-	Print("Valid Colours are ");
-	for(fg=0;fg<8;fg++)
-	{
-		Print(cCOLOUR_NAMES[fg]);
-		write(_stdout, 3, ", ");
+	else {
+		 int	status;
+		waittid(pid, &status);
 	}
-	write(_stdout, 4, "\b\b\n");
+}
+
+/**
+ * \fn void Command_Logout(int argc, char **argv)
+ * \brief Exit the shell, logging the user out
+ */
+void Command_Logout(int argc, char **argv)
+{
+	exit(0);
+}
+
+/**
+ * \fn void Command_Colour(int argc, char **argv)
+ * \brief Displays the help screen
+ */
+void Command_Help(int argc, char **argv)
+{
+	Print("Acess 2 Command Line Interface\n");
+	Print(" By John Hodge (thePowersGang / [TPG])\n");
+	Print("\n");
+	Print("Builtin Commands:\n");
+	Print(" logout: Return to the login prompt\n");
+	Print(" exit:   Same\n");
+	Print(" help:   Display this message\n");
+	Print(" clear:  Clear the screen\n");
+	Print(" cd:     Change the current directory\n");
+	Print(" dir:    Print the contents of the current directory\n");
+	//Print("\n");
 	return;
 }
 
+/**
+ * \fn void Command_Clear(int argc, char **argv)
+ * \brief Clear the screen
+ */
 void Command_Clear(int argc, char **argv)
 {
 	write(_stdout, 4, "\x1B[2J");	//Clear Screen
 }
 
+/**
+ * \fn void Command_Cd(int argc, char **argv)
+ * \brief Change directory
+ */
 void Command_Cd(int argc, char **argv)
 {
 	char	tmpPath[1024];
@@ -310,14 +412,137 @@ void Command_Cd(int argc, char **argv)
 		write(_stdout, 26, "Directory does not exist\n");
 		return;
 	}
-	finfo(fp, &stats);
+	finfo(fp, &stats, 0);
 	close(fp);
 	
-	if(!(stats.flags & FILEFLAG_DIRECTORY)) {
+	if( !(stats.flags & FILEFLAG_DIRECTORY) ) {
 		write(_stdout, 17, "Not a Directory\n");
 		return;
 	}
 	
+	free(gsCurrentDirectory);
+	gsCurrentDirectory = malloc(strlen(tmpPath)+1);
 	strcpy(gsCurrentDirectory, tmpPath);
+	
+	// Register change with kernel
+	chdir( gsCurrentDirectory );
 }
 
+/**
+ * \fn void Command_Dir(int argc, char **argv)
+ * \brief Print the contents of a directory
+ */
+void Command_Dir(int argc, char **argv)
+{
+	 int	dp, fp, dirLen;
+	char	modeStr[11] = "RWXrwxRWX ";
+	char	tmpPath[1024];
+	char	*fileName;
+	t_sysFInfo	info;
+	t_sysACL	acl;
+	
+	// Generate Directory Path
+	if(argc > 1)
+		dirLen = GeneratePath(argv[1], gsCurrentDirectory, tmpPath);
+	else
+	{
+		strcpy(tmpPath, gsCurrentDirectory);
+	}
+	dirLen = strlen(tmpPath);
+	
+	// Open Directory
+	dp = open(tmpPath, OPENFLAG_READ);
+	// Check if file opened
+	if(dp == -1)
+	{
+		printf("Unable to open directory `%s', File cannot be found\n", tmpPath);
+		return;
+	}
+	// Get File Stats
+	if( finfo(dp, &info, 0) == -1 )
+	{
+		close(dp);
+		write(_stdout, 34, "stat Failed, Bad File Descriptor\n");
+		return;
+	}
+	// Check if it's a directory
+	if(!(info.flags & FILEFLAG_DIRECTORY))
+	{
+		close(dp);
+		write(_stdout, 27, "Unable to open directory `");
+		write(_stdout, strlen(tmpPath)+1, tmpPath);
+		write(_stdout, 20, "', Not a directory\n");
+		return;
+	}
+	
+	// Append Shash for file paths
+	if(tmpPath[dirLen-1] != '/')
+	{
+		tmpPath[dirLen++] = '/';
+		tmpPath[dirLen] = '\0';
+	}
+	
+	fileName = (char*)(tmpPath+dirLen);
+	// Read Directory Content
+	while( (fp = readdir(dp, fileName)) )
+	{
+		if(fp < 0)
+		{
+			if(fp == -3)
+				write(_stdout, 42, "Invalid Permissions to traverse directory\n");
+			break;
+		}
+		// Open File
+		fp = open(tmpPath, 0);
+		if(fp == -1)	continue;
+		// Get File Stats
+		finfo(fp, &info, 0);
+		
+		if(info.flags & FILEFLAG_DIRECTORY)
+			write(_stdout, 1, "d");
+		else
+			write(_stdout, 1, "-");
+		
+		// Print Mode
+		// - Owner
+		acl.group = 0;	acl.id = info.uid;
+		_SysGetACL(fp, &acl);
+		if(acl.perms & 1)	modeStr[0] = 'r';	else	modeStr[0] = '-';
+		if(acl.perms & 2)	modeStr[1] = 'w';	else	modeStr[1] = '-';
+		if(acl.perms & 8)	modeStr[2] = 'x';	else	modeStr[2] = '-';
+		// - Group
+		acl.group = 1;	acl.id = info.gid;
+		_SysGetACL(fp, &acl);
+		if(acl.perms & 1)	modeStr[3] = 'r';	else	modeStr[3] = '-';
+		if(acl.perms & 2)	modeStr[4] = 'w';	else	modeStr[4] = '-';
+		if(acl.perms & 8)	modeStr[5] = 'x';	else	modeStr[5] = '-';
+		// - World
+		acl.group = 1;	acl.id = -1;
+		_SysGetACL(fp, &acl);
+		if(acl.perms & 1)	modeStr[6] = 'r';	else	modeStr[6] = '-';
+		if(acl.perms & 2)	modeStr[7] = 'w';	else	modeStr[7] = '-';
+		if(acl.perms & 8)	modeStr[8] = 'x';	else	modeStr[8] = '-';
+		write(_stdout, 10, modeStr);
+		close(fp);
+		
+		// Colour Code
+		if(info.flags & FILEFLAG_DIRECTORY)	// Directory: Green
+			write(_stdout, 6, "\x1B[32m");
+		// Default: White
+		
+		// Print Name
+		write(_stdout, strlen(fileName), fileName);
+		
+		// Print slash if applicable
+		if(info.flags & FILEFLAG_DIRECTORY)
+			write(_stdout, 1, "/");
+		
+		// Revert Colour
+		write(_stdout, 6, "\x1B[37m");
+		
+		// Newline!
+		write(_stdout, 1, "\n");
+	}
+	// Close Directory
+	close(dp);
+}