From bb8d7d0da1664aafb101bc32e4641155af9c9c50 Mon Sep 17 00:00:00 2001
From: Lisa Milne <lisamilne618@gmail.com>
Date: Wed, 6 Dec 2023 20:53:05 +1000
Subject: [PATCH] add group file, and user/group data functions getpw*/getgr*

---
 clite/commands.js |  21 +++++---
 clite/core.js     | 128 +++++++++++++++++++++++++++++++++++++++-------
 clite/libstd.js   |  24 +++++++++
 3 files changed, 147 insertions(+), 26 deletions(-)

diff --git a/clite/commands.js b/clite/commands.js
index 5564351..e93e8c5 100644
--- a/clite/commands.js
+++ b/clite/commands.js
@@ -54,13 +54,21 @@ Options:
 
 	function writeNodeData(st,fd) {
 		if (long) {
+			var pw = stdlib.getpwuid(st.uid);
+			var gr = stdlib.getgrgid(st.gid);
+			var uname = st.uid.toString();
+			var gname = st.gid.toString();
+			if (pw)
+				uname = pw.pw_name;
+			if (gr)
+				gname = gr.gr_name;
 			if (st.type == stdio.types.FT_LINK) {
 				var d = stdio.readAll(fd);
 				if (!d)
 					d = '?';
-				stdio.printf(st.perms+'\t'+st.uid+'\t'+st.gid+'\t'+st.name+' -> '+d);
+				stdio.printf('%s%16s%16s%16s -> %s\n',st.perms,uname,gname,st.name,d);
 			}else{
-				stdio.printf(st.perms+'\t'+st.uid+'\t'+st.gid+'\t'+st.name);
+				stdio.printf('%s%16s%16s%16s\n',st.perms,uname,gname,st.name);
 			}
 		}else{
 			stdio.printf(st.name);
@@ -1192,14 +1200,13 @@ clite.commands.load('test',function(args,env,io) {
 	stdio.printf('uid:%d',stdlib.getuid());
 	stdio.printf('%#15x:%15o:%15.5f:%0$15.5f:%%:',10,12,8.123456789);
 	function rcb(data) {
-		stdio.printf(data);
+		stdio.write(io.stdout,data);
+		var u = stdlib.getpwnam(data);
+		if (u)
+			stdio.printf('%s %d %d\n',u.pw_name,u.pw_uid,u.pw_gid);
 		io.exit(0);
 	}
 
-	var fd = clite.io.openp(io.pid,'/var/logs',stdio.flags.O_RDONLY,function(fd) {
-		alert(fd.node.data.content);
-	});
-
 	stdio.read(io.stdin,rcb);
 
 	return null;
diff --git a/clite/core.js b/clite/core.js
index 741b688..2aaa93b 100644
--- a/clite/core.js
+++ b/clite/core.js
@@ -40,9 +40,9 @@ var clite = {
 			},
 			file:function(name,callback) {
 				if (window.location.protocol == 'file:') { // this is a dirty hack and I hate it, just let me open a file: path!
-					//clite.term.setCustom({type:'file',callback:callback});
-					//clite.shell.writeLine('open file: '+name);
-					//return;
+					clite.term.setCustom({type:'file',callback:callback});
+					clite.term.writeLine('open file: '+name);
+					return;
 
 					// fuck it, I'll just update about:config in firefox
 				}
@@ -264,6 +264,19 @@ PATH=/bin
 				n.data.content = `
 root:x:0:0:root:/root:/bin/sh
 guest:x:1:1:guest:/usr/home/guest:/bin/sh
+`;
+				// TODO: check cookies for a local user
+				n.perms = '-rw-r--r--';
+				// /etc/passwd contains user account details
+				vfsapi.mkFile(0,'/etc/group');
+				var n = vfsapi.getNode(0,'/etc/group');
+				if (!n) {
+					clite.log.write('group config failure');
+					return false;
+				}
+				n.data.content = `
+root:x:0:
+guest:x:1:
 `;
 				// TODO: check cookies for a local user
 				n.perms = '-rw-r--r--';
@@ -723,21 +736,35 @@ clite.proc = {
 
 clite.user = {
 	init:function(vfsapi) { // returns true if there's a user login or false for guest
-		var users = [{
-			name:'root',
-			uid:0,
-			gid:0,
-			groups:[],
-			env:{
-				HOME:'/',
-				USER:this.name,
-			}
-		}];
+		var data = {
+			users:[{
+				name:'root',
+				uid:0,
+				gid:0,
+				groups:[],
+				env:{
+					HOME:'/',
+					USER:this.name,
+				}
+			}],
+			groups:[{
+				name:'root',
+				gid:0,
+				users:[]
+			}]
+		};
 		var env = {};
 		function getUser(uid) {
-			for (var i=0; i<users.length; i++) {
-				if (users[i].uid == uid)
-					return users[i];
+			for (var i=0; i<data.users.length; i++) {
+				if (data.users[i].uid == uid)
+					return data.users[i];
+			}
+			return null;
+		}
+		function getGroup(gid) {
+			for (var i=0; i<data.groups.length; i++) {
+				if (data.groups[i].gid == gid)
+					return data.groups[i];
 			}
 			return null;
 		}
@@ -764,7 +791,7 @@ clite.user = {
 				var udata = getUser(uid);
 				if (!udata) {
 					udata = {};
-					users.push(udata);
+					data.users.push(udata);
 				}
 
 				udata.name = sects[0];
@@ -777,7 +804,32 @@ clite.user = {
 				udata.env.USER = udata.name;
 				udata.env.PWD = udata.env.HOME;
 			});
-			// TODO: read in data from /etc/groups
+			// load in data from /etc/group
+			n = vfsapi.getFile(0,'/etc/group');
+			if (!n)
+				return false;
+			var lines = n.split('\n');
+			lines.forEach(function(line) {
+				if (line[0] == '#')
+					return;
+				var sects = line.split(':');
+				// 0 groupname
+				// 1 null
+				// 2 gid
+				// 3 csv users
+				if (sects.length != 4)
+					return;
+				var gid = parseInt(sects[2]);
+				var gdata = getGroup(gid);
+				if (!gdata) {
+					gdata = {};
+					data.groups.push(gdata);
+				}
+
+				gdata.name = sects[0];
+				gdata.gid = parseInt(sects[2]);
+				gdata.users = sects[3].split(',');
+			});
 
 			// load the environment
 			n = vfsapi.getFile(0,'/etc/env');
@@ -793,7 +845,7 @@ clite.user = {
 				var name = sects[0].trim();
 				var value = sects[1].trim();
 				env[name] = value;
-				users.forEach(function(u) {
+				data.users.forEach(function(u) {
 					u.env[name] = value;
 				});
 			});
@@ -853,6 +905,44 @@ cat -l /usr/share/introduction
 				return structuredClone(env);
 			return structuredClone(udata.env);
 		}
+		clite.user.getPWData = function(uid) {
+			var udata = getUser(uid);
+			if (!udata)
+				return null;
+
+			return Object.create({
+				pw_name:udata.name,		// User's login name.
+				pw_uid:udata.uid,		// Numerical user ID.
+				pw_gid:udata.gid,		// Numerical group ID.
+				pw_dir:udata.env.HOME,		// Initial working directory.
+				pw_shell:udata.env.SHELL	// Program to use as shell.
+			});
+		}
+		clite.user.getGRData = function(gid) {
+			var gdata = getGroup(gid);
+			if (!gdata)
+				return null;
+
+			return Object.create({
+				gr_name:gdata.name,		// The name of the group.
+				gr_gid:gdata.gid,		// Numerical group ID.
+				gr_mem:gdata.users		// array of member names.
+			});
+		}
+		clite.user.mapUserName = function(name) {
+			for (var i=0; i<data.users.length; i++) {
+				if (data.users[i].name == name)
+					return data.users[i].uid;
+			}
+			return -1;
+		}
+		clite.user.mapGroupName = function(name) {
+			for (var i=0; i<data.groups.length; i++) {
+				if (data.groups[i].name == name)
+					return data.groups[i].gid;
+			}
+			return -1;
+		}
 
 		loadUsers();
 
diff --git a/clite/libstd.js b/clite/libstd.js
index 50fae43..3316903 100644
--- a/clite/libstd.js
+++ b/clite/libstd.js
@@ -48,11 +48,35 @@ return Object.create({
 		return clite.proc.getUID(io.pid);
 	},
 
+	// gets the passwd file data for a user based on their uid
+	getpwuid:function(uid) {
+		return clite.user.getPWData(uid);
+	},
+	// gets the passwd file data for a user based on their name
+	getpwnam:function(name) {
+		var uid = clite.user.mapUserName(name);
+		if (uid < 0)
+			return null;
+		return clite.user.getPWData(uid);
+	},
+
 	// returns the current group id
 	getgid:function() {
 		return clite.proc.getGID(io.pid);
 	},
 
+	// gets teh group file data for a group based on their gid
+	getgrgid:function(gid) {
+		return clite.user.getGRData(gid);
+	},
+	// gets teh group file data for a group based on their name
+	getgrnam:function(name) {
+		var gid = clite.user.mapGroupName(name);
+		if (gid < 0)
+			return null;
+		return clite.user.getGRData(gid);
+	},
+
 	// wait for any child process to exit
 	wait:function(cb) {
 		return clite.proc.addWaitGroupAny(io.pid,cb);