complete redesign: use nodejs on server instead of php - documentation to be updated

2016-01-10 23:17:30 +00:00
parent 1c3765955b
commit a56d3118de
1376 changed files with 183732 additions and 1253 deletions
--- a/nodejs/sockets/index.js
+++ b/nodejs/sockets/index.js
@@ -0,0 +1,93 @@
+module.exports = function(sql) {
+
+    var module={};
+
+    module.connection = function(socket) {
+
+        console.log("new client");
+
+        function emit(signal, data) {
+            console.log("<- signal: "+signal);
+            socket.emit(signal, data);
+        }
+
+        function broadcast(signal, data) {
+            console.log("<= signal: "+signal);
+            socket.broadcast.emit(signal, data);
+        }
+
+        socket.on("message", function(msg) {
+            console.log("-> signal: message");
+            if (!msg || !msg.user || !msg.content) return emit("fail", "wrong message format");
+            sql.query("select pubkey from user where name = ?", [msg.user],
+                      function(err, res, flds) {
+                          if (err || !res || !res.length) return emit("fail", "unknown sender");
+                          sql.query("insert into message set ?", {user: msg.user, msg: msg.content},
+                                    function(err, result) {
+                                        if (err) return emit("fail", "cannot store message");
+                                        sql.query("select * from message, user"+
+                                                  " where message.id = ? and"+
+                                                  " message.user = user.name",
+                                                  [result.insertId],
+                                                  function(err, res, flds) {
+                                                      broadcast('message', res[0]);
+                                                      emit('message', res[0]);
+                                                  });
+                                    });
+                      });
+        });
+
+        socket.on("messages", function(msg) {
+            console.log("-> signal: messages");
+            sql.query("select * from message, user where message.user = user.name", [],
+                      function(err, res, flds) {
+                          emit('messages', res);
+                      });
+        });
+
+        socket.on("login", function(user) {
+            if (!user.name || !user.pubkey) return emit("fail", "wrong login format");
+            console.log("-> signal: login("+user.name+")");
+            if (user.name=="safechat") return emit("fail", "user name safechat is reserved");
+            sql.query("select name, pubkey from user where name = ?", [user.name],
+                      function(err, res, flds) {
+                          if (err) return emit('fail', "login failed");
+                          if (!res || res.length==0) {
+                              sql.query("insert into user (name, pubkey) values (?,?)",
+                                        [user.name, user.pubkey], function(err, res, flds) {
+                                            if (err) return emit('fail', "login failed");
+                                            broadcast("user", {
+                                                name: user.name, exists: false, pubkey: user.pubkey
+                                            });
+                                            emit('login');
+                                        });
+                          } else {
+                              if (res[0].pubkey==user.pubkey) return emit('login');
+                              emit('fail', "login failed");
+                          }
+                      });
+        });
+
+        socket.on("user", function(name) {
+            console.log("-> signal: user("+name+")");
+            var result = {name: name, exists: false, pubkey: null};
+            sql.query("select pubkey from user where name = ?", [name], function(err, res, flds) {
+                if (!err && res && res.length) {
+                    result.exists = true;
+                    result.pubkey = res[0].pubkey;
+                }
+                emit('user', result);
+            });
+        });
+        
+        socket.on("users", function(name) {
+            console.log("-> signal: users");
+            sql.query("select name, pubkey from user", [name], function(err, res, flds) {
+                if (!err && res && res.length) emit('users', res);
+            });
+        });
+        
+    };
+    
+    return module;
+};