%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2003-2009. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. %% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. %% %% %CopyrightEnd% %% %%% @doc FTP client module (based on the FTP support of the INETS application). %%% %%% @type connection() = handle() | ct:target_name() %%% @type handle() = ct_gen_conn:handle(). Handle for a specific %%% ftp connection. -module(ct_ftp). %% API -export([get/3,put/3, open/1,close/1, send/2,send/3, recv/2,recv/3, cd/2, ls/2, type/2, delete/2]). %% Callbacks -export([init/3,handle_msg/2,reconnect/2,terminate/2]). -include("ct_util.hrl"). -record(state,{ftp_pid,target_name}). -define(DEFAULT_PORT,21). %%%================================================================= %%% API %%%----------------------------------------------------------------- %%% @spec put(KeyOrName,LocalFile,RemoteFile) -> ok | {error,Reason} %%% KeyOrName = Key | Name %%% Key = atom() %%% Name = ct:target_name() %%% LocalFile = string() %%% RemoteFile = string() %%% %%% @doc Open a ftp connection and send a file to the remote host. %%% %%%

LocalFile and RemoteFile must be %%% absolute paths.

%%% %%%

If the target host is a "special" node, the ftp address must be %%% specified in the config file like this:

%%%
%%% {node,[{ftp,IpAddr}]}.
%%% %%%

If the target host is something else, e.g. a unix host, the %%% config file must also include the username and password (both %%% strings):

%%%
%%% {unix,[{ftp,IpAddr},
%%%        {username,Username},
%%%        {password,Password}]}.
put(KeyOrName,LocalFile,RemoteFile) -> Fun = fun(Ftp) -> send(Ftp,LocalFile,RemoteFile) end, open_and_do(KeyOrName,Fun). %%%----------------------------------------------------------------- %%% @spec get(KeyOrName,RemoteFile,LocalFile) -> ok | {error,Reason} %%% KeyOrName = Key | Name %%% Key = atom() %%% Name = ct:target_name() %%% RemoteFile = string() %%% LocalFile = string() %%% %%% @doc Open a ftp connection and fetch a file from the remote host. %%% %%%

RemoteFile and LocalFile must be %%% absolute paths.

%%% %%%

The config file must be as for put/3.

%%% @see put/3 get(KeyOrName,RemoteFile,LocalFile) -> Fun = fun(Ftp) -> recv(Ftp,RemoteFile,LocalFile) end, open_and_do(KeyOrName,Fun). %%%----------------------------------------------------------------- %%% @spec open(KeyOrName) -> {ok,Handle} | {error,Reason} %%% KeyOrName = Key | Name %%% Key = atom() %%% Name = ct:target_name() %%% Handle = handle() %%% %%% @doc Open an FTP connection to the specified node. %%%

You can open one connection for a particular Name and %%% use the same name as reference for all subsequent operations. If you %%% want the connection to be associated with Handle instead %%% (in case you need to open multiple connections to a host for example), %%% simply use Key, the configuration variable name, to %%% specify the target. Note that a connection that has no associated target %%% name can only be closed with the handle value.

open(KeyOrName) -> case ct_util:get_key_from_name(KeyOrName) of {ok,node} -> open(KeyOrName,"erlang","x"); _ -> case ct:get_config(KeyOrName) of undefined -> log(heading(open,KeyOrName),"Failed: ~p\n", [{not_available,KeyOrName}]), {error,{not_available,KeyOrName}}; _ -> case ct:get_config({KeyOrName,username}) of undefined -> log(heading(open,KeyOrName),"Failed: ~p\n", [{not_available,{KeyOrName,username}}]), {error,{not_available,{KeyOrName,username}}}; Username -> case ct:get_config({KeyOrName,password}) of undefined -> log(heading(open,KeyOrName),"Failed: ~p\n", [{not_available,{KeyOrName,password}}]), {error,{not_available,{KeyOrName,password}}}; Password -> open(KeyOrName,Username,Password) end end end end. open(KeyOrName,Username,Password) -> log(heading(open,KeyOrName),"",[]), case ct:get_config({KeyOrName,ftp}) of undefined -> log(heading(open,KeyOrName),"Failed: ~p\n", [{not_available,{KeyOrName,ftp}}]), {error,{not_available,{KeyOrName,ftp}}}; Addr -> ct_gen_conn:start(KeyOrName,full_addr(Addr),{Username,Password},?MODULE) end. %%%----------------------------------------------------------------- %%% @spec send(Connection,LocalFile) -> ok | {error,Reason} %%% %%% @doc Send a file over FTP. %%%

The file will get the same name on the remote host.

%%% @see send/3 send(Connection,LocalFile) -> send(Connection,LocalFile,filename:basename(LocalFile)). %%%----------------------------------------------------------------- %%% @spec send(Connection,LocalFile,RemoteFile) -> ok | {error,Reason} %%% Connection = connection() %%% LocalFile = string() %%% RemoteFile = string() %%% %%% @doc Send a file over FTP. %%% %%%

The file will be named RemoteFile on the remote host.

send(Connection,LocalFile,RemoteFile) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{send,LocalFile,RemoteFile}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec recv(Connection,RemoteFile) -> ok | {error,Reason} %%% %%% @doc Fetch a file over FTP. %%%

The file will get the same name on the local host.

%%% @see recv/3 recv(Connection,RemoteFile) -> recv(Connection,RemoteFile,filename:basename(RemoteFile)). %%%----------------------------------------------------------------- %%% @spec recv(Connection,RemoteFile,LocalFile) -> ok | {error,Reason} %%% Connection = connection() %%% RemoteFile = string() %%% LocalFile = string() %%% %%% @doc Fetch a file over FTP. %%% %%%

The file will be named LocalFile on the local host.

recv(Connection,RemoteFile,LocalFile) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{recv,RemoteFile,LocalFile}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec cd(Connection,Dir) -> ok | {error,Reason} %%% Connection = connection() %%% Dir = string() %%% %%% @doc Change directory on remote host. cd(Connection,Dir) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{cd,Dir}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec ls(Connection,Dir) -> {ok,Listing} | {error,Reason} %%% Connection = connection() %%% Dir = string() %%% Listing = string() %%% %%% @doc List the directory Dir. ls(Connection,Dir) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{ls,Dir}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec type(Connection,Type) -> ok | {error,Reason} %%% Connection = connection() %%% Type = ascii | binary %%% %%% @doc Change file transfer type type(Connection,Type) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{type,Type}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec delete(Connection,File) -> ok | {error,Reason} %%% Connection = connection() %%% File = string() %%% %%% @doc Delete a file on remote host delete(Connection,File) -> case get_handle(Connection) of {ok,Pid} -> call(Pid,{delete,File}); Error -> Error end. %%%----------------------------------------------------------------- %%% @spec close(Connection) -> ok | {error,Reason} %%% Connection = connection() %%% %%% @doc Close the FTP connection. close(Connection) -> case get_handle(Connection) of {ok,Pid} -> ct_gen_conn:stop(Pid); Error -> Error end. %%%================================================================= %%% Callback functions %% @hidden init(KeyOrName,{IP,Port},{Username,Password}) -> case ftp_connect(IP,Port,Username,Password) of {ok,FtpPid} -> log(heading(init,KeyOrName), "Opened ftp connection:\nIP: ~p\nUsername: ~p\nPassword: ~p\n", [IP,Username,lists:duplicate(length(Password),$*)]), {ok,FtpPid,#state{ftp_pid=FtpPid,target_name=KeyOrName}}; Error -> Error end. ftp_connect(IP,Port,Username,Password) -> inets:start(), case inets:start(ftpc,[{host,IP},{port,Port}]) of {ok,FtpPid} -> case ftp:user(FtpPid,Username,Password) of ok -> {ok,FtpPid}; {error,Reason} -> {error,{user,Reason}} end; {error,Reason} -> {error,{open,Reason}} end. %% @hidden handle_msg({send,LocalFile,RemoteFile},State) -> log(heading(send,State#state.target_name), "LocalFile: ~p\nRemoteFile: ~p\n",[LocalFile,RemoteFile]), Result = ftp:send(State#state.ftp_pid,LocalFile,RemoteFile), {Result,State}; handle_msg({recv,RemoteFile,LocalFile},State) -> log(heading(recv,State#state.target_name), "RemoteFile: ~p\nLocalFile: ~p\n",[RemoteFile,LocalFile]), Result = ftp:recv(State#state.ftp_pid,RemoteFile,LocalFile), {Result,State}; handle_msg({cd,Dir},State) -> log(heading(cd,State#state.target_name),"Dir: ~p\n",[Dir]), Result = ftp:cd(State#state.ftp_pid,Dir), {Result,State}; handle_msg({ls,Dir},State) -> log(heading(ls,State#state.target_name),"Dir: ~p\n",[Dir]), Result = ftp:ls(State#state.ftp_pid,Dir), {Result,State}; handle_msg({type,Type},State) -> log(heading(type,State#state.target_name),"Type: ~p\n",[Type]), Result = ftp:type(State#state.ftp_pid,Type), {Result,State}; handle_msg({delete,File},State) -> log(heading(delete,State#state.target_name),"Delete file: ~p\n",[File]), Result = ftp:delete(State#state.ftp_pid,File), {Result,State}. %% @hidden reconnect(_Addr,_State) -> {error,no_reconnection_of_ftp}. %% @hidden terminate(FtpPid,State) -> log(heading(terminate,State#state.target_name), "Closing FTP connection.\nHandle: ~p\n",[FtpPid]), inets:stop(ftpc,FtpPid). %%%================================================================= %%% Internal function get_handle(Pid) when is_pid(Pid) -> {ok,Pid}; get_handle(Name) -> case ct_util:get_connections(Name,?MODULE) of {ok,[{Pid,_}|_]} -> {ok,Pid}; {ok,[]} -> open(Name); Error -> Error end. full_addr({Ip,Port}) -> {Ip,Port}; full_addr(Ip) -> {Ip,?DEFAULT_PORT}. call(Pid,Msg) -> ct_gen_conn:call(Pid,Msg). heading(Function,Name) -> io_lib:format("ct_ftp:~w ~p",[Function,Name]). log(Heading,Str,Args) -> ct_gen_conn:log(Heading,Str,Args). open_and_do(Name,Fun) -> case open(Name) of {ok,Ftp} -> R = Fun(Ftp), close(Ftp), R; Error -> Error end.