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diff --git a/lib/ftp/doc/src/ftp.xml b/lib/ftp/doc/src/ftp.xml new file mode 100644 index 0000000000..18770ebcb4 --- /dev/null +++ b/lib/ftp/doc/src/ftp.xml @@ -0,0 +1,977 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>1997</year><year>2016</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>ftp</title> + <prepared>Peter Högfeldt</prepared> + <docno></docno> + <date>1997-11-05</date> + <rev>B</rev> + <file>ftp.xml</file> + </header> + <module>ftp</module> + <modulesummary>A File Transfer Protocol client.</modulesummary> + + <description> + + <p>This module implements a client for file transfer + according to a subset of the File Transfer Protocol (FTP), see + <url href="http://www.ietf.org/rfc/rfc959.txt">RFC 959</url>.</p> + + <p>The FTP client always tries to use passive FTP mode and only resort + to active FTP mode if this fails. This default behavior can be + changed by start option <seealso marker="#mode">mode</seealso>.</p> + + <marker id="two_start"></marker> + + <p>An FTP client can be started in two ways. One is using the + <seealso marker="#service_start">service_start</seealso> function, + the other is to start it directly as a standalone process + using function <seealso marker="#open">open</seealso>.</p> + + <p>For a simple example of an FTP session, see + <seealso marker="ftp_client">FTP User's Guide</seealso>.</p> + + <p>In addition to the ordinary functions for receiving and sending + files (see <c>recv/2</c>, <c>recv/3</c>, <c>send/2</c>, and + <c>send/3</c>) there are functions for receiving remote files as + binaries (see <c>recv_bin/2</c>) and for sending binaries to be + stored as remote files (see <c>send_bin/3</c>).</p> + + <p>A set of functions is provvided for sending and receiving + contiguous parts of a file to be stored in a remote file. For send, + see <c>send_chunk_start/2</c>, <c>send_chunk/2</c>, and + <c>send_chunk_end/1</c>. For receive, see + <c>recv_chunk_start/2</c> and <c>recv_chunk/</c>).</p> + + <p>The return values of the following functions depend + much on the implementation of the FTP server at the remote + host. In particular, the results from <c>ls</c> and <c>nlist</c> + varies. Often real errors are not reported as errors by <c>ls</c>, + even if, for example, a file or directory does not + exist. <c>nlist</c> is usually more strict, but some + implementations have the peculiar behaviour of responding with an + error if the request is a listing of the contents of a directory + that exists but is empty.</p> + + <marker id="service_start"></marker> + </description> + + <section> + <title>FTP CLIENT SERVICE START/STOP</title> + + <p>The FTP client can be started and stopped dynamically in runtime by + calling the <c>ftp</c> application API + <c>ftp:start_service(ServiceConfig)</c> and + <c>ftp:stop_service(Pid)</c>.</p> + + <p>The available configuration options are as follows:</p> + + <taglist> + <tag>{host, Host}</tag> + <item> + <marker id="host"></marker> + <p>Host = <c>string() | ip_address()</c></p> + </item> + + <tag>{port, Port}</tag> + <item> + <marker id="port"></marker> + <p>Port = <c>integer() > 0</c></p> + <p>Default is <c>21</c>.</p> + </item> + + <tag>{mode, Mode}</tag> + <item> + <marker id="mode"></marker> + <p>Mode = <c>active | passive</c></p> + <p>Default is <c>passive</c>.</p> + </item> + + <tag>{verbose, Verbose}</tag> + <item> + <marker id="verbose"></marker> + <p>Verbose = <c>boolean()</c> </p> + <p>Determines if the FTP communication is to be + verbose or not.</p> + <p>Default is <c>false</c>.</p> + </item> + + <tag>{debug, Debug}</tag> + <item> + <marker id="debug"></marker> + <p>Debug = <c>trace | debug | disable</c> </p> + <p>Debugging using the dbg toolkit. </p> + <p>Default is <c>disable</c>.</p> + </item> + + <tag>{ipfamily, IpFamily}</tag> + <item> + <marker id="ipfamily"></marker> + <p>IpFamily = <c>inet | inet6 | inet6fb4</c> </p> + <p>With <c>inet6fb4</c> the client behaves as before, that is, + tries to use IPv6, and only if that does not work it + uses IPv4).</p> + <p>Default is <c>inet</c> (IPv4).</p> + </item> + + <tag>{timeout, Timeout}</tag> + <item> + <marker id="timeout"></marker> + <p>Timeout = <c>non_neg_integer()</c></p> + <p>Connection time-out.</p> + <p>Default is <c>60000</c> (milliseconds).</p> + </item> + + <tag>{dtimeout, DTimeout}</tag> + <item> + <marker id="dtimeout"></marker> + <p>DTimeout = <c>non_neg_integer() | infinity</c> </p> + <p>Data connect time-out. + The time the client waits for the server to connect to the + data socket.</p> + <p>Default is <c>infinity</c>. </p> + </item> + + <tag>{progress, Progress}</tag> + <item> + <marker id="progress"></marker> + <p>Progress = <c>ignore | {CBModule, CBFunction, InitProgress}</c></p> + <p><c>CBModule = atom()</c>, <c>CBFunction = atom()</c></p> + <p><c>InitProgress = term()</c></p> + <p>Default is <c>ignore</c>.</p> + </item> + + </taglist> + + <p>Option <c>progress</c> is intended to be used by applications that + want to create some type of progress report, such as a progress bar in + a GUI. Default for the progress option is <c>ignore</c>, + that is, the option is not used. When the progress option is + specified, the following happens when <c>ftp:send/[3,4]</c> or + <c>ftp:recv/[3,4]</c> are called:</p> + + <list type="bulleted"> + <item> + <p>Before a file is transferred, the following call is + made to indicate the start of the file transfer and how large + the file is. The return value of the callback function + is to be a new value for the <c>UserProgressTerm</c> that will + be used as input the next time the callback function is + called.</p> + <p><c> + CBModule:CBFunction(InitProgress, File, {file_size, FileSize}) + </c></p> + </item> + + <item> + <p>Every time a chunk of bytes is transferred the + following call is made:</p> + <p><c> + CBModule:CBFunction(UserProgressTerm, File, {transfer_size, TransferSize}) + </c></p> + </item> + + <item> + <p>At the end of the file the following call is + made to indicate the end of the transfer:</p> + <p><c> + CBModule:CBFunction(UserProgressTerm, File, {transfer_size, 0}) + </c></p> + </item> + </list> + + <p>The callback function is to be defined as follows:</p> + + <p><c> + CBModule:CBFunction(UserProgressTerm, File, Size) -> UserProgressTerm + </c></p> + + <p><c> + CBModule = CBFunction = atom() + </c></p> + + <p><c> + UserProgressTerm = term() + </c></p> + + <p><c> + File = string() + </c></p> + + <p><c> + Size = {transfer_size, integer()} | {file_size, integer()} | {file_size, unknown} + </c></p> + + <p>For remote files, <c>ftp</c> cannot determine the + file size in a platform independent way. In this case the size + becomes <c>unknown</c> and it is left to the application to + determine the size.</p> + + <note> + <p>The callback is made by a middleman process, hence the + file transfer is not affected by the code in the progress + callback function. If the callback crashes, this is + detected by the FTP connection process, which then prints an + info-report and goes on as if the progress option was set + to <c>ignore</c>.</p> + </note> + + <p>The file transfer type is set to the default of the FTP server + when the session is opened. This is usually ASCCI mode. + </p> + + <p>The current local working directory (compare <c>lpwd/1</c>) is set + to the value reported by <c>file:get_cwd/1</c>, the wanted + local directory. + </p> + + <p>The return value <c>Pid</c> is used as a reference to the + newly created FTP client in all other functions, and they are to + be called by the process that created the connection. The FTP + client process monitors the process that created it and + terminates if that process terminates.</p> + </section> + + <section> + <title>DATA TYPES</title> + <p>The following type definitions are used by more than one + function in the FTP client API:</p> + <p><c>pid()</c> = identifier of an FTP connection</p> + <p><c>string()</c> = list of ASCII characters</p> + <p><c>shortage_reason()</c> = <c>etnospc | epnospc</c></p> + <p><c>restriction_reason()</c> = <c>epath | efnamena | elogin | enotbinary</c> + - all restrictions are not always relevant to all functions + </p> + <p><c>common_reason()</c> = <c>econn | eclosed | term()</c> + - some explanation of what went wrong</p> + + <marker id="account"></marker> + </section> + + <funcs> + + <func> + <name>account(Pid, Account) -> ok | {error, Reason}</name> + <fsummary>Specifies which account to use.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Account = string()</v> + <v>Reason = eacct | common_reason()</v> + </type> + <desc> + <p>Sets the account for an operation, if needed.</p> + + <marker id="append"></marker> + <marker id="append2"></marker> + <marker id="append3"></marker> + </desc> + </func> + + <func> + <name>append(Pid, LocalFile) -> </name> + <name>append(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name> + <fsummary>Transfers a file to remote server, and appends it to + <c>Remotefile</c>.</fsummary> + <type> + <v>Pid = pid()</v> + <v>LocalFile = RemoteFile = string()</v> + <v>Reason = epath | elogin | etnospc | epnospc | efnamena | common_reason</v> + </type> + <desc> + <p>Transfers the file <c>LocalFile</c> to the remote server. If + <c>RemoteFile</c> is specified, the name of the remote file that the + file is appended to is set to <c>RemoteFile</c>, otherwise + to <c>LocalFile</c>. If the file does not exists, + it is created.</p> + + <marker id="append_bin"></marker> + </desc> + </func> + + <func> + <name>append_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name> + <fsummary>Transfers a binary into a remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()()</v> + <v>RemoteFile = string()</v> + <v>Reason = restriction_reason()| shortage_reason() | common_reason()</v> + </type> + <desc> + <p>Transfers the binary <c>Bin</c> to the remote server and appends + it to the file <c>RemoteFile</c>. If the file does not exist, it + is created.</p> + + <marker id="append_chunk"></marker> + </desc> + </func> + + <func> + <name>append_chunk(Pid, Bin) -> ok | {error, Reason}</name> + <fsummary>Appends a chunk to the remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()</v> + <v>Reason = echunk | restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Transfers the chunk <c>Bin</c> to the remote server, which + appends it to the file specified in the call to + <c>append_chunk_start/2</c>.</p> + <p>For some errors, for example, file system full, it is + necessary to call <c>append_chunk_end</c> to get the + proper reason.</p> + + <marker id="append_chunk_start"></marker> + </desc> + </func> + + <func> + <name>append_chunk_start(Pid, File) -> ok | {error, Reason}</name> + <fsummary>Starts transfer of file chunks for appending to <c>File</c>.</fsummary> + <type> + <v>Pid = pid()</v> + <v>File = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Starts the transfer of chunks for appending to the file + <c>File</c> at the remote server. If the file does not exist, + it is created.</p> + + <marker id="append_chunk_end"></marker> + </desc> + </func> + + <func> + <name>append_chunk_end(Pid) -> ok | {error, Reason}</name> + <fsummary>Stops transfer of chunks for appending.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Reason = echunk | restriction_reason() | shortage_reason() </v> + </type> + <desc> + <p>Stops transfer of chunks for appending to the remote server. + The file at the remote server, specified in the call to + <c>append_chunk_start/2</c>, is closed by the server.</p> + + <marker id="cd"></marker> + </desc> + </func> + + <func> + <name>cd(Pid, Dir) -> ok | {error, Reason}</name> + <fsummary>Changes remote working directory.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Dir = string()</v> + <v>Reason = restriction_reason() | common_reason() </v> + </type> + <desc> + <p>Changes the working directory at the remote server to + <c>Dir</c>.</p> + + <marker id="close"></marker> + </desc> + </func> + + <func> + <name>close(Pid) -> ok</name> + <fsummary>Ends the FTP session.</fsummary> + <type> + <v>Pid = pid()</v> + </type> + <desc> + <p>Ends an FTP session, created using function + <seealso marker="#open">open</seealso>.</p> + + <marker id="delete"></marker> + </desc> + </func> + + <func> + <name>delete(Pid, File) -> ok | {error, Reason}</name> + <fsummary>Deletes a file at the remote server.</fsummary> + <type> + <v>Pid = pid()</v> + <v>File = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Deletes the file <c>File</c> at the remote server.</p> + + <marker id="append"></marker> + </desc> + </func> + + <func> + <name>formaterror(Tag) -> string()</name> + <fsummary>Returns error diagnostics.</fsummary> + <type> + <v>Tag = {error, atom()} | atom()</v> + </type> + <desc> + <p>Given an error return value <c>{error, AtomReason}</c>, + this function returns a readable string describing the error.</p> + + <marker id="lcd"></marker> + </desc> + </func> + + <func> + <name>lcd(Pid, Dir) -> ok | {error, Reason}</name> + <fsummary>Changes local working directory.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Dir = string()</v> + <v>Reason = restriction_reason()</v> + </type> + <desc> + <p>Changes the working directory to <c>Dir</c> for the local client.</p> + + <marker id="lpwd"></marker> + </desc> + </func> + + <func> + <name>lpwd(Pid) -> {ok, Dir}</name> + <fsummary>Gets local current working directory.</fsummary> + <type> + <v>Pid = pid()</v> + </type> + <desc> + <p>Returns the current working directory at the local client.</p> + + <marker id="ls"></marker> + <marker id="ls1"></marker> + <marker id="ls2"></marker> + </desc> + </func> + + <func> + <name>ls(Pid) -> </name> + <name>ls(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name> + <fsummary>List of files.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Pathname = string()</v> + <v>Listing = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Returns a list of files in long format.</p> + <p><c>Pathname</c> can be a directory, a group of files, or + a file. The <c>Pathname</c> string can contain wildcards.</p> + <p><c>ls/1</c> implies the current remote directory of the user.</p> + <p>The format of <c>Listing</c> depends on the operating system. + On UNIX, it is typically produced from the output of the + <c>ls -l</c> shell command.</p> + + <marker id="mkdir"></marker> + </desc> + </func> + + <func> + <name>mkdir(Pid, Dir) -> ok | {error, Reason}</name> + <fsummary>Creates a remote directory.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Dir = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Creates the directory <c>Dir</c> at the remote server.</p> + + <marker id="nlist"></marker> + <marker id="nlist1"></marker> + <marker id="nlist2"></marker> + </desc> + </func> + + <func> + <name>nlist(Pid) -> </name> + <name>nlist(Pid, Pathname) -> {ok, Listing} | {error, Reason}</name> + <fsummary>List of files.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Pathname = string()</v> + <v>Listing = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Returns a list of files in short format.</p> + <p><c>Pathname</c> can be a directory, a group of files, or + a file. The <c>Pathname</c> string can contain wildcards.</p> + <p><c>nlist/1</c> implies the current remote directory of the user.</p> + <p>The format of <c>Listing</c> is a stream of + filenames where each filename is separated by <CRLF> or + <NL>. Contrary to function <c>ls</c>, the purpose of + <c>nlist</c> is to enable a program to + process filename information automatically.</p> + + <marker id="open"></marker> + </desc> + </func> + + <func> + <name>open(Host) -> {ok, Pid} | {error, Reason}</name> + <name>open(Host, Opts) -> {ok, Pid} | {error, Reason}</name> + <fsummary>Starts a standalone FTP client.</fsummary> + <type> + <v>Host = string() | ip_address()</v> + <v>Opts = options()</v> + <v>options() = [option()]</v> + <v>option() = start_option() | open_option()</v> + <v>start_option() = {verbose, verbose()} | {debug, debug()}</v> + <v>verbose() = boolean() (default is false)</v> + <v>debug() = disable | debug | trace (default is disable)</v> + <v>open_option() = {ipfamily, ipfamily()} | {port, port()} | {mode, mode()} | {tls, tls_options()} | {timeout, timeout()} | {dtimeout, dtimeout()} | {progress, progress()}</v> + <v>ipfamily() = inet | inet6 | inet6fb4 (default is inet)</v> + <v>port() = integer() > 0 (default is 21)</v> + <v>mode() = active | passive (default is passive)</v> + <v>tls_options() = [<seealso marker="ssl:ssl#type-ssloption">ssl:ssloption()</seealso>]</v> + <v>timeout() = integer() > 0 (default is 60000 milliseconds)</v> + <v>dtimeout() = integer() > 0 | infinity (default is infinity)</v> + <v>pogress() = ignore | {module(), function(), initial_data()} (default is ignore)</v> + <v>module() = atom()</v> + <v>function() = atom()</v> + <v>initial_data() = term()</v> + <v>Reason = ehost | term()</v> + </type> + + <desc> + <p>Starts a standalone FTP client process + (without the <c>ftp</c> service framework) and + opens a session with the FTP server at <c>Host</c>. </p> + + <p>If option <c>{tls, tls_options()}</c> is present, the FTP session + is transported over <c>tls</c> (<c>ftps</c>, see + <url href="http://www.ietf.org/rfc/rfc4217.txt">RFC 4217</url>). + The list <c>tls_options()</c> can be empty. The function + <seealso marker="ssl:ssl#connect/3"><c>ssl:connect/3</c></seealso> + is used for securing both the control connection and the data sessions. + </p> + + <p>A session opened in this way is closed using function + <seealso marker="#close">close</seealso>.</p> + + <marker id="pwd"></marker> + </desc> + </func> + + <func> + <name>pwd(Pid) -> {ok, Dir} | {error, Reason}</name> + <fsummary>Gets the remote current working directory.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Returns the current working directory at the remote server.</p> + + <marker id="recv"></marker> + <marker id="recv2"></marker> + <marker id="recv3"></marker> + </desc> + </func> + + <func> + <name>recv(Pid, RemoteFile) -> </name> + <name>recv(Pid, RemoteFile, LocalFile) -> ok | {error, Reason}</name> + <fsummary>Transfers a file from remote server.</fsummary> + <type> + <v>Pid = pid()</v> + <v>RemoteFile = LocalFile = string()</v> + <v>Reason = restriction_reason() | common_reason() | file_write_error_reason() </v> + <v>file_write_error_reason() = see file:write/2</v> + </type> + <desc> + <p>Transfers the file <c>RemoteFile</c> from the remote server + to the file system of the local client. If + <c>LocalFile</c> is specified, the local file will be + <c>LocalFile</c>, otherwise + <c>RemoteFile</c>.</p> + <p>If the file write fails (for example, <c>enospc</c>), the command is + aborted and <c>{error, file_write_error_reason()}</c> is returned. + However, the file is <em>not</em> removed.</p> + + <marker id="recv_bin"></marker> + </desc> + </func> + + <func> + <name>recv_bin(Pid, RemoteFile) -> {ok, Bin} | {error, Reason}</name> + <fsummary>Transfers a file from remote server as a binary.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()</v> + <v>RemoteFile = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Transfers the file <c>RemoteFile</c> from the remote server and + receives it as a binary.</p> + + <marker id="recv_chunk_start"></marker> + </desc> + </func> + + <func> + <name>recv_chunk_start(Pid, RemoteFile) -> ok | {error, Reason}</name> + <fsummary>Starts chunk-reading of the remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>RemoteFile = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Starts transfer of the file <c>RemoteFile</c> from the + remote server.</p> + + <marker id="recv_chunk"></marker> + </desc> + </func> + + <func> + <name>recv_chunk(Pid) -> ok | {ok, Bin} | {error, Reason}</name> + <fsummary>Receives a chunk of the remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Receives a chunk of the remote file (<c>RemoteFile</c> of + <c>recv_chunk_start</c>). The return values have the following + meaning:</p> + <list type="bulleted"> + <item><c>ok</c> = the transfer is complete.</item> + <item><c>{ok, Bin}</c> = just another chunk of the file.</item> + <item><c>{error, Reason}</c> = transfer failed.</item> + </list> + + <marker id="rename"></marker> + </desc> + </func> + + <func> + <name>rename(Pid, Old, New) -> ok | {error, Reason}</name> + <fsummary>Renames a file at the remote server.</fsummary> + <type> + <v>Pid = pid()</v> + <v>CurrFile = NewFile = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Renames <c>Old</c> to <c>New</c> at the remote server.</p> + + <marker id="rmdir"></marker> + </desc> + </func> + + <func> + <name>rmdir(Pid, Dir) -> ok | {error, Reason}</name> + <fsummary>Removes a remote directory.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Dir = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Removes directory <c>Dir</c> at the remote server.</p> + + <marker id="send"></marker> + <marker id="send2"></marker> + <marker id="send3"></marker> + </desc> + </func> + + <func> + <name>send(Pid, LocalFile) -></name> + <name>send(Pid, LocalFile, RemoteFile) -> ok | {error, Reason}</name> + <fsummary>Transfers a file to the remote server.</fsummary> + <type> + <v>Pid = pid()</v> + <v>LocalFile = RemoteFile = string()</v> + <v>Reason = restriction_reason() | common_reason() | shortage_reason()</v> + </type> + <desc> + <p>Transfers the file <c>LocalFile</c> to the remote server. If + <c>RemoteFile</c> is specified, the name of the remote file is set + to <c>RemoteFile</c>, otherwise to <c>LocalFile</c>.</p> + + <marker id="send_bin"></marker> + </desc> + </func> + + <func> + <name>send_bin(Pid, Bin, RemoteFile) -> ok | {error, Reason}</name> + <fsummary>Transfers a binary into a remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()()</v> + <v>RemoteFile = string()</v> + <v>Reason = restriction_reason() | common_reason() | shortage_reason()</v> + </type> + <desc> + <p>Transfers the binary <c>Bin</c> into the file <c>RemoteFile</c> + at the remote server.</p> + + <marker id="send_chunk"></marker> + </desc> + </func> + + <func> + <name>send_chunk(Pid, Bin) -> ok | {error, Reason}</name> + <fsummary>Writes a chunk to the remote file.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Bin = binary()</v> + <v>Reason = echunk | restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Transfers the chunk <c>Bin</c> to the remote server, which + writes it into the file specified in the call to + <c>send_chunk_start/2</c>.</p> + <p>For some errors, for example, file system full, it is + necessary to to call <c>send_chunk_end</c> to get the + proper reason.</p> + + <marker id="send_chunk_start"></marker> + </desc> + </func> + + <func> + <name>send_chunk_start(Pid, File) -> ok | {error, Reason}</name> + <fsummary>Starts transfer of file chunks.</fsummary> + <type> + <v>Pid = pid()</v> + <v>File = string()</v> + <v>Reason = restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Starts transfer of chunks into the file <c>File</c> at the + remote server.</p> + + <marker id="send_chunk_end"></marker> + </desc> + </func> + + <func> + <name>send_chunk_end(Pid) -> ok | {error, Reason}</name> + <fsummary>Stops transfer of chunks.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Reason = restriction_reason() | common_reason() | shortage_reason()</v> + </type> + <desc> + <p>Stops transfer of chunks to the remote server. The file at the + remote server, specified in the call to <c>send_chunk_start/2</c> + is closed by the server.</p> + + <marker id="type"></marker> + </desc> + </func> + + <func> + <name>start_service(ServiceConfig) -> {ok, Pid} | {error, Reason}</name> + <fsummary>Dynamically starts an <c>FTP</c> + session after the <c>ftp</c> application has been started.</fsummary> + <type> + <v>ServiceConfig = [{Option, Value}]</v> + <v>Option = property()</v> + <v>Value = term()</v> + </type> + <desc> + <p>Dynamically starts an <c>FTP</c> session after the <c>ftp</c> + application has been started.</p> + <note> + <p>As long as the <c>ftp</c> application is operational, + the FTP sessions are supervised and can be soft code upgraded.</p> + </note> + </desc> + </func> + + <func> + <name>stop_service(Reference) -> ok | {error, Reason} </name> + <fsummary>Stops an FTP session.</fsummary> + <type> + <v>Reference = pid() | term() - service-specified reference</v> + <v>Reason = term()</v> + </type> + <desc> + <p>Stops a started FTP session.</p> + </desc> + </func> + + <func> + <name>type(Pid, Type) -> ok | {error, Reason}</name> + <fsummary>Sets transfer type to <c>ascii</c>or <c>binary</c>.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Type = ascii | binary</v> + <v>Reason = etype | restriction_reason() | common_reason()</v> + </type> + <desc> + <p>Sets the file transfer type to <c>ascii</c> or <c>binary</c>. When + an FTP session is opened, the default transfer type of the + server is used, most often <c>ascii</c>, which is default + according to <url href="http://www.ietf.org/rfc/rfc959.txt">RFC 959</url>.</p> + <marker id="user3"></marker> + </desc> + </func> + + <func> + <name>user(Pid, User, Password) -> ok | {error, Reason}</name> + <fsummary>User login.</fsummary> + <type> + <v>Pid = pid()</v> + <v>User = Password = string()</v> + <v>Reason = euser | common_reason()</v> + </type> + <desc> + <p>Performs login of <c>User</c> with <c>Password</c>.</p> + + <marker id="user4"></marker> + </desc> + </func> + + <func> + <name>user(Pid, User, Password, Account) -> ok | {error, Reason}</name> + <fsummary>User login.</fsummary> + <type> + <v>Pid = pid()</v> + <v>User = Password = string()</v> + <v>Reason = euser | common_reason() </v> + </type> + <desc> + <p>Performs login of <c>User</c> with <c>Password</c> to the account + specified by <c>Account</c>.</p> + + <marker id="quote"></marker> + </desc> + </func> + + <func> + <name>quote(Pid, Command) -> [FTPLine]</name> + <fsummary>Sends an arbitrary FTP command.</fsummary> + <type> + <v>Pid = pid()</v> + <v>Command = string()</v> + <v>FTPLine = string(</v> + </type> + <desc><note><p>The telnet end of line characters, from the FTP + protocol definition, CRLF, for example, "\\r\\n" has been removed.</p></note> + <p>Sends an arbitrary FTP command and returns verbatim a list + of the lines sent back by the FTP server. This function is + intended to give application accesses to FTP commands + that are server-specific or that cannot be provided by + this FTP client.</p> + <note> + <p>FTP commands requiring a data connection cannot be + successfully issued with this function.</p> + </note> + </desc> + </func> + </funcs> + + <section> + <title>ERRORS</title> + <p>The possible error reasons and the corresponding diagnostic strings + returned by <c>formaterror/1</c> are as follows: + </p> + <taglist> + <tag><c>echunk</c></tag> + <item> + <p>Synchronization error during chunk sending according to one + of the following: + </p><list type="bulleted"> + <item>A call is made to <c>send_chunk/2</c> or <c>send_chunk_end/1</c> + before a call to <c>send_chunk_start/2</c>.</item> + <item>A call has been made to another transfer function during chunk + sending, that is, before a call to <c>send_chunk_end/1</c>.</item> + </list> + </item> + <tag><c>eclosed</c></tag> + <item> + <p>The session is closed.</p> + </item> + <tag><c>econn</c></tag> + <item> + <p>Connection to the remote server is prematurely closed.</p> + </item> + <tag><c>ehost</c></tag> + <item> + <p>Host is not found, FTP server is not found, or connection is rejected + by FTP server.</p> + </item> + <tag><c>elogin</c></tag> + <item> + <p>User is not logged in.</p> + </item> + <tag><c>enotbinary</c></tag> + <item> + <p>Term is not a binary.</p> + </item> + <tag><c>epath</c></tag> + <item> + <p>No such file or directory, or directory already exists, or + permission denied.</p> + </item> + <tag><c>etype</c></tag> + <item> + <p>No such type.</p> + </item> + <tag><c>euser</c></tag> + <item> + <p>Invalid username or password.</p> + </item> + <tag><c>etnospc</c></tag> + <item> + <p>Insufficient storage space in system [452].</p> + </item> + <tag><c>epnospc</c></tag> + <item> + <p>Exceeded storage allocation (for current directory or + dataset) [552].</p> + </item> + <tag><c>efnamena</c></tag> + <item> + <p>Filename not allowed [553].</p> + </item> + </taglist> + </section> + + <section> + <title>SEE ALSO</title> + <p><seealso marker="kernel:file">file(3)</seealso> + <seealso marker="stdlib:filename">filename(3)</seealso> + and J. Postel and J. Reynolds: File Transfer Protocol + (<url href="http://www.ietf.org/rfc/rfc959.txt">RFC 959</url>). + </p> + </section> + +</erlref> + + |