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Flesh out ssh2_connect()
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@175728 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Sara Golemon
parent
84649cab8c
commit
9066a2ede4
1 changed files with 244 additions and 2 deletions
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@ -1,5 +1,5 @@
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<?xml version='1.0' encoding='iso-8859-1'?>
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<!-- $Revision: 1.1 $ -->
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<!-- $Revision: 1.2 $ -->
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<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
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<refentry id="function.ssh2-connect">
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<refnamediv>
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@ -18,10 +18,252 @@
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<methodparam choice="opt"><type>array</type><parameter>callbacks</parameter></methodparam>
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</methodsynopsis>
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<para>
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<simpara>
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Establish a connection to a remote SSH server and return a resource on success, false on error
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</simpara>
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<simpara>
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<parameter>methods</parameter> may be an associative array with up to four parameters
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as described below.
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</simpara>
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<para>
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<table>
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<title><parameter>methods</parameter> may be an associative array
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with any or all of the following parameters.</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Index</entry>
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<entry>Meaning</entry>
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<entry>Supported Values*</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>kex</entry>
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<entry>
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List of key exchange methods to advertise, coma separated
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in order of preference.
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</entry>
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<entry>
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<literal>diffie-hellman-group1-sha1</literal>,
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<literal>diffie-hellman-group4-sha1</literal>, and
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<literal>diffie-hellman-group-exchange-sha1</literal>
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</entry>
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</row>
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<row>
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<entry>hostkey</entry>
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<entry>
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List of hostkey methods to advertise, come separated
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in order of preference.
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</entry>
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<entry>
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<literal>ssh-rsa</literal> and
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<literal>ssh-dss</literal>
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</entry>
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</row>
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<row>
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<entry>client_to_server</entry>
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<entry>
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Associative array containing crypt, compression, and
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message authentication code (MAC) method preferences
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for messages sent from client to server.
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</entry>
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<entry/>
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</row>
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<row>
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<entry>server_to_client</entry>
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<entry>
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Associative array containing crypt, compression, and
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message authentication code (MAC) method preferences
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for messages sent from client to server.
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</entry>
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<entry/>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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<simpara>
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* - Supported Values are dependent on methods supported by underlying library.
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See <ulink url="&url.libssh2;">libssh2</ulink> documentation for additional
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information.
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</simpara>
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<para>
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<table>
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<title>
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<parameter>client_to_server</parameter> and
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<parameter>server_to_client</parameter> may be an associative array
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with any or all of the following parameters.
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</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Index</entry>
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<entry>Meaning</entry>
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<entry>Supported Values*</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>crypt</entry>
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<entry>List of crypto methods to advertise, coma separated
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in order of preference.</entry>
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<entry>
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<literal>rijndael-cbc@lysator.liu.se</literal>,
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<literal>aes256-cbc</literal>,
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<literal>aes192-cbc</literal>,
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<literal>aes128-cbc</literal>,
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<literal>3des-cbc</literal>,
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<literal>blowfish-cbc</literal>,
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<literal>cast128-cbc</literal>,
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<literal>arcfour</literal>, and
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<literal>none**</literal>
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</entry>
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</row>
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<row>
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<entry>comp</entry>
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<entry>List of compression methods to advertise, coma separated
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in order of preference.</entry>
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<entry>
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<literal>zlib</literal> and
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<literal>none</literal>
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</entry>
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</row>
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<row>
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<entry>mac</entry>
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<entry>List of MAC methods to advertise, come separated
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in order of preference.</entry>
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<entry>
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<literal>hmac-sha1</literal>,
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<literal>hmac-sha1-96</literal>,
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<literal>hmac-ripemd160</literal>,
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<literal>hmac-ripemd160@openssh.com</literal>, and
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<literal>none**</literal>
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</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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<note>
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<title>Crypt and MAC method "<literal>none</literal>"</title>
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<simpara>
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For security reasons, <literal>none</literal> is disabled by the underlying
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<ulink url="&url.libssh2;">libssh2</ulink> library unless explicitly enabled
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during build time by using the appropriate ./configure options. See documentation
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for the underlying library for more information.
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</simpara>
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</note>
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<para>
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<table>
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<title><parameter>callbackss</parameter> may be an associative array
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with any or all of the following parameters.</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Index</entry>
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<entry>Meaning</entry>
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<entry>Prototype</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>ignore</entry>
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<entry>
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Name of function to call when an
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<constant>SSH2_MSG_IGNORE</constant>
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packet is received
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</entry>
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<entry>void ignore_cb($message)</entry>
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</row>
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<row>
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<entry>debug</entry>
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<entry>
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Name of function to call when an
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<constant>SSH2_MSG_DEBUG</constant>
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packet is received
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</entry>
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<entry>void debug_cb($message, $language, $always_display)</entry>
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</row>
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<row>
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<entry>macerror</entry>
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<entry>
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Name of function to call when a
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packet is received but the message authentication
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code failed. If the callback returns &true;,
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the mismatch will be ignored, otherwise the
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connection will be terminated.
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</entry>
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<entry>bool macerror_cb($packet)</entry>
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</row>
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<row>
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<entry>disconnect</entry>
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<entry>
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Name of function to call when an
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<constant>SSH2_MSG_DISCONNECT</constant>
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packet is received
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</entry>
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<entry>void disconnect_cb($reason, $message, $language)</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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<example>
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<title>
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Open a connection forcing 3des-cbc when sending packets,
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any strength aes cipher when receiving packets,
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no compression in either direction,
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and Group1 key exchange.
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</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* Notify the user if the server terminates the connection */
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function my_ssh_disconnect($reason, $message, $language) {
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printf("Server disconnected with reason code [%d] and message: %s\n",
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$reason, $message);
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}
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$methods = array(
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'kex' => 'diffie-hellman-group1-sha1',
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'client_to_server' => array(
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'crypt' => '3des-cbc',
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'comp' => 'none'),
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'server_to_client' => array(
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'crypt' => 'aes256-cbc,aes192-cbc,aes128-cbc',
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'comp' => 'none'));
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$callbacks = array('disconnect' => 'my_ssh_disconnect');
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$connection = ssh2_connect('shell.example.com', 22, $methods, $callbacks);
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if (!$connect) die('Connection failed');
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?>
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]]>
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</programlisting>
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</example>
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<simpara>
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Once connected, the client should verify the server's hostkey
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using <function>ssh2_fingerprint</function>, then authenticate
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using either password or public key.
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</simpara>
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<simpara>
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See Also:
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<function>ssh2_fingerprint</function>,
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<function>ssh2_auth_none</function>,
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<function>ssh2_auth_password</function>, and
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<function>ssh2_auth_pubkey_file</function>
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</simpara>
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</refsect1>
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</refentry>
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