Merge branch '3.0'
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commit
d02d77ad56
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@ -267,6 +267,18 @@ class SSH2
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*/
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private array|false $server_host_key_algorithms = false;
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/**
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* Supported Private Key Algorithms
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*
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* In theory this should be the same as the Server Host Key Algorithms but, in practice,
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* some servers (eg. Azure) will support rsa-sha2-512 as a server host key algorithm but
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* not a private key algorithm
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*
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* @see self::privatekey_login()
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* @var array|false
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*/
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private $supported_private_key_algorithms = false;
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/**
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* Encryption Algorithms: Client to Server
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*
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@ -1271,6 +1283,8 @@ class SSH2
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$first_kex_packet_follows
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] = Strings::unpackSSH2('L10C', $response);
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$this->supported_private_key_algorithms = $this->server_host_key_algorithms;
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if ($send_kex) {
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$this->send_binary_packet($kexinit_payload_client);
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}
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@ -2243,7 +2257,7 @@ class SSH2
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if (isset($this->preferred['hostkey'])) {
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$algos = array_intersect($this->preferred['hostkey'], $algos);
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}
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$algo = self::array_intersect_first($algos, $this->server_host_key_algorithms);
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$algo = self::array_intersect_first($algos, $this->supported_private_key_algorithms);
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switch ($algo) {
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case 'rsa-sha2-512':
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$hash = 'sha512';
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@ -2312,6 +2326,10 @@ class SSH2
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switch ($type) {
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case MessageType::USERAUTH_FAILURE:
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[$auth_methods] = Strings::unpackSSH2('L', $response);
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if (in_array('publickey', $auth_methods) && substr($signatureType, 0, 9) == 'rsa-sha2-') {
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$this->supported_private_key_algorithms = array_diff($this->supported_private_key_algorithms, ['rsa-sha2-256', 'rsa-sha2-512']);
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return $this->privatekey_login($username, $privatekey);
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}
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$this->auth_methods_to_continue = $auth_methods;
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$this->errors[] = 'SSH_MSG_USERAUTH_FAILURE';
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return false;
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