func (fs *FileSession) hashHandler(incomingPacket packet.PacketStd) {
//connects to db to comapre hash
db, error := sql.Open("sqlite3", "../gypo.db")
if error != nil {
fmt.Println(error.Error())
} else {
var hash string
error := db.QueryRow("SELECT hash FROM files WHERE path = ? AND filename = ? AND user_id = ?", incomingPacket.Name[:strings.LastIndex(incomingPacket.Name, "/")+1], incomingPacket.Name[strings.LastIndex(incomingPacket.Name, "/")+1:], fs.User.Id).Scan(&hash)
if error != nil {
newPacket := packet.PacketStd{packet.Packet{"hash", incomingPacket.Name}, "SEND_FILE_TRUE"}
go newPacket.SendPacket(fs.Connection)
fmt.Println("file not exist, send file")
//adds hash to tempHash, if file recieve is successful; tempHash is dumped to db
incomingPacket.Data = "0" + incomingPacket.Data //adds '0' to indicate INSERT(new file)
fs.tempHash[incomingPacket.Name] = incomingPacket
} else if hash != incomingPacket.Data {
newPacket := packet.PacketStd{packet.Packet{"hash", incomingPacket.Name}, "SEND_FILE_TRUE"}
go newPacket.SendPacket(fs.Connection)
fmt.Println("hash different, send file")
//adds hash to tempHash, if file recieve is successful; tempHash is dumped to db
incomingPacket.Data = "1" + incomingPacket.Data //adds '1' to indicate UPDATE(existing file)
fs.tempHash[incomingPacket.Name] = incomingPacket
} else if hash == incomingPacket.Data {
newPacket := packet.PacketStd{packet.Packet{"hash", incomingPacket.Name}, "SEND_FILE_FALSE"}
go newPacket.SendPacket(fs.Connection)
fmt.Println("hash same, no send file")
}
db.Close()
}
}
func (fs *FileSession) pullHandler(incomingPacket packet.PacketStd) {
if incomingPacket.Name == "REQ_FILELIST" {
//db initializing
db, error := sql.Open("sqlite3", "../gypo.db")
//tells client pull request recieved
newPacket := packet.PacketStd{packet.Packet{"pull", "REQ_FILELIST_RECV"}, ""}
go newPacket.SendPacket(fs.Connection)
//creates list of server files and sends back to client
if error != nil {
fmt.Println(error.Error())
} else {
//PacketList instance for server files(db)
var server_fileList packet.PacketList
//get number of files from db to use for file server_fileList.Data size
var dbFileCount int
error = db.QueryRow("SELECT count(*) AS number FROM files WHERE user_id = ?", fs.User.Id).Scan(&dbFileCount)
if error != nil {
fmt.Println(error.Error())
} else {
//sets PacketList instance variables
server_fileList.Data = make([]packet.PacketStd, dbFileCount)
server_fileList.ContentType = "pull"
server_fileList.Name = "RESP_FILELIST"
//get fileList from db
rows, error := db.Query("SELECT filename, path, hash, is_dir FROM files WHERE user_id = ?", fs.User.Id)
if error != nil {
fmt.Println(error.Error())
} else {
var rowPacket packet.PacketStd
var filename, path, hash string
var is_dir int
i := 0
for rows.Next() {
error = rows.Scan(&filename, &path, &hash, &is_dir)
if error != nil {
fmt.Println(error.Error())
} else {
if is_dir == 1 {
rowPacket.ContentType = "folder"
rowPacket.Name = path
rowPacket.Data = ""
} else {
rowPacket.ContentType = "hash"
rowPacket.Name = path + filename
rowPacket.Data = hash
}
}
server_fileList.Data[i] = rowPacket
i++
}
go server_fileList.SendPacket(fs.Connection)
fmt.Println("server_fileList size: ", len(server_fileList.Data))
}
}
}
} else if incomingPacket.Name == "REQ_FILE" {
//wraps file in packet and sends it
newPacket := packet.PacketStd{packet.Packet{"pull", "RESP_FILE"}, incomingPacket.Data}
go newPacket.SendFilePacket(fs.Connection)
}
}
func (fs *FileSession) pushHandler(incomingPacket packet.PacketStd) {
fmt.Println("processing push")
//getting pushList from socket
incomingBytes, _ := strconv.Atoi(incomingPacket.Data)
pushListB := make([]byte, incomingBytes)
i := 0
for i < incomingBytes {
chunkSize, _ := fs.Connection.Read(pushListB[i:])
i = i + chunkSize
fmt.Println("read so far: ", i)
}
//unmarshal data from socket to PacketList instance
var client_pushList packet.PacketList
client_pushList.ContentType = "push"
client_pushList.Name = "client"
flsize, _ := strconv.Atoi(incomingPacket.Name)
flObj := make([]packet.PacketStd, flsize)
client_pushList.Data = flObj
error := json.Unmarshal(pushListB, &client_pushList)
if error == nil {
fmt.Println("push recieved, " + incomingPacket.Name + " entries\n")
} else {
fmt.Println(error.Error())
}
//tells client push was recieved
newPacket := packet.PacketStd{packet.Packet{"push", ""}, "PUSH_RECIEVED"}
go newPacket.SendPacket(fs.Connection)
//PacketList instance for server files(db)
var server_fileList packet.PacketList
db, error := sql.Open("sqlite3", "../gypo.db")
if error != nil {
fmt.Println(error.Error())
} else {
//get number of files from db to use for file array size
var dbFileCount int
error = db.QueryRow("SELECT count(*) AS number FROM files WHERE user_id = ?", fs.User.Id).Scan(&dbFileCount)
if error != nil {
fmt.Println(error.Error())
} else {
server_fileList.Data = make([]packet.PacketStd, dbFileCount)
//fetches files from db and adds them to server_fileList
rows, error := db.Query("SELECT filename, path, hash, is_dir FROM files WHERE user_id = ?", fs.User.Id)
if error != nil {
fmt.Println(error.Error())
} else {
var is_dir int
var rowContentType, rowName, rowData string
var rowPacket packet.PacketStd
//populates server_fileList.Data
i = 0
for rows.Next() {
error = rows.Scan(&rowContentType, &rowName, &rowData, &is_dir)
//fmt.Println(i, " | ", is_dir)
if error != nil {
fmt.Println(error.Error())
}
if is_dir == 1 {
rowPacket.ContentType = "folder"
rowPacket.Name = rowName
rowPacket.Data = ""
} else {
rowPacket.ContentType = "hash"
rowPacket.Name = rowName + rowContentType
rowPacket.Data = rowData
}
server_fileList.Data[i] = rowPacket
i++
}
fmt.Println("server_fileList size: ", len(server_fileList.Data))
fmt.Println("client_pushList size: ", len(client_pushList.Data))
/*
i = 0
for i < len(server_fileList.Data) {
fmt.Println("ContentType: " + server_fileList.Data[i].ContentType + " | Name: " + server_fileList.Data[i].Name + " | Data: " + server_fileList.Data[i].Data)
i++
}
fmt.Println("\n\n\n\n")
i = 0
for i < len(client_pushList.Data) {
fmt.Println("ContentType: " + client_pushList.Data[i].ContentType + " | Name: " + client_pushList.Data[i].Name + " | Data: " + server_fileList.Data[i].Data)
i++
}*/
//compares client_pushList to server_fileList
nilPacket := packet.PacketStd{packet.Packet{"", ""}, ""} //to flag list entries as solved
i = 0
j := 0
for i < len(client_pushList.Data) {
//check if i is allready solved
if len(client_pushList.Data[i].ContentType) > 0 {
for j < len(server_fileList.Data) {
//file
if client_pushList.Data[i].ContentType == "hash" {
//match
if client_pushList.Data[i].Name == server_fileList.Data[j].Name {
//update file if needed
if client_pushList.Data[i].Data != server_fileList.Data[j].Data {
client_pushList.Data[i].Data = "1" + client_pushList.Data[i].Data //adds '1' to indicate UPDATE(existing file)
fs.tempHash[client_pushList.Data[i].Name] = client_pushList.Data[i]
fmt.Println("hash for: " + client_pushList.Data[i].Name + " added to tempHash")
//fmt.Println("path and filename the same, different hash | client: " + client_pushList.Data[i].Data + " server: " + server_fileList.Data[j].Data)
newPacket := packet.PacketStd{packet.Packet{"hash", client_pushList.Data[i].Name}, "SEND_FILE_TRUE"}
go newPacket.SendPacket(fs.Connection)
fmt.Println(client_pushList.Data[i].Name + " exist, different hash, send\n")
//flag list entries as solved
client_pushList.Data[i] = nilPacket
server_fileList.Data[j] = nilPacket
} else {
//files are identical, flag list entries as solved
client_pushList.Data[i] = nilPacket
server_fileList.Data[j] = nilPacket
}
}
//path
} else if client_pushList.Data[i].ContentType == "folder" {
//match
if client_pushList.Data[i].Name == server_fileList.Data[j].Name {
//if both paths exist on server and client, flag list entries as solved
client_pushList.Data[i] = nilPacket
server_fileList.Data[j] = nilPacket
}
}
j++ //increase server_fileList index
}
}
j = 0 //resets server_fileList index
i++ //increase client_pushList index
}
//client_pushList entries not flagged as handled are treated as new files and folders and will be downloaded an/or created
i = 0
for i < len(client_pushList.Data) {
if client_pushList.Data[i].ContentType == "hash" { //file
//adds hash to tempHash, if file recieve is successful; tempHash is dumped to db
client_pushList.Data[i].Data = "0" + client_pushList.Data[i].Data //adds '0' to indicate INSERT(new file)
fs.tempHash[client_pushList.Data[i].Name] = client_pushList.Data[i]
fmt.Println("hash for: " + client_pushList.Data[i].Name + " added to tempHash")
newPacket := packet.PacketStd{packet.Packet{"hash", client_pushList.Data[i].Name}, "SEND_FILE_TRUE"}
go newPacket.SendPacket(fs.Connection)
fmt.Println(client_pushList.Data[i].Name + " not exist, send\n")
//flag list entry as solved
client_pushList.Data[i] = nilPacket
} else if client_pushList.Data[i].ContentType == "folder" { //folder
error = os.MkdirAll(client_pushList.Data[i].Name[1:], 07777) //liberal chmod
if error != nil {
fmt.Println(error.Error())
//adds folder to db
} else {
_, error := db.Exec("INSERT INTO files (path, is_dir, user_id) VALUES (?, ?, ?)", client_pushList.Data[i].Name, 1, fs.User.Id)
if error != nil {
fmt.Println(error.Error())
} else {
fmt.Println("folder: " + client_pushList.Data[i].Name + " created and added to db")
}
}
}
i++
}
fmt.Println("tempHash size: ", len(fs.tempHash))
//server_fileList entries not flagged as handled are threated as deleted files and gets deleted
i = 0
for i < len(server_fileList.Data) {
if server_fileList.Data[i].ContentType == "hash" { //file
//delete db entry
_, error := db.Exec("DELETE FROM files WHERE path = ? AND hash = ? AND user_id = ?", server_fileList.Data[i].Name[:strings.LastIndex(server_fileList.Data[i].Name, "/")+1], server_fileList.Data[i].Data, fs.User.Id)
if error != nil {
fmt.Println(error.Error())
} else {
//delete file
_ = os.RemoveAll(fs.RootDir + server_fileList.Data[i].Name)
/*if error != nil {
fmt.Println(error.Error())
}*/
}
//flag list entry as solved
server_fileList.Data[i] = nilPacket
} else if server_fileList.Data[i].ContentType == "folder" {
//delete db entry
_, error := db.Exec("DELETE FROM files WHERE path = ? AND is_dir = ? AND user_id = ?", server_fileList.Data[i].Name, 1, fs.User.Id)
if error != nil {
fmt.Println(error.Error())
} else {
//delete folder
_ = os.RemoveAll(fs.RootDir + server_fileList.Data[i].Name)
/*if error != nil {
fmt.Println(error.Error())
}*/
}
//flag list entry as solved
server_fileList.Data[i] = nilPacket
}
i++
}
}
}
}
}