Description:
------------
keyboard_interactive auth not supported. The below patch will fix the issues on 
FreeBSD as well (Bug #54916).

/* Uses the function libssh2_userauth_list to fetch auth modes and if keyboard_interactive is found uses libssh2_userauth_keyboard_interactive method to fill in the response text. Changed function PHP_FUNCTION(ssh2_auth_password).*/

char *password_key = "gbVer4TG";
char *userauthlist;

static void kbd_callback(const char *name, int name_len,
        const char *instruction, int instruction_len,
        int num_prompts,
        const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
        LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
        void **abstract) {

    responses[0].text = password_key;
    responses[0].length = strlen(password_key);

}

PHP_FUNCTION(ssh2_auth_password) {
    LIBSSH2_SESSION *session;
    zval *zsession;
    char *username, *password;
    int username_len, password_len;

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rss", &zsession, &username, &username_len, &password, &password_len) == FAILURE) {
        RETURN_FALSE;
    }

    ZEND_FETCH_RESOURCE(session, LIBSSH2_SESSION*, &zsession, -1, PHP_SSH2_SESSION_RES_NAME, le_ssh2_session);
    userauthlist = libssh2_userauth_list(session, username, username_len);
    /* TODO: Support password change callback */
    password_key = password;
    if (strstr(userauthlist, "keyboard-interactive") != NULL) {


        if (libssh2_userauth_keyboard_interactive(session, username, &kbd_callback) == 0) {
            RETURN_TRUE;
        } else {
            php_error_docref(NULL TSRMLS_CC, E_WARNING, "Authentication failed for %s using password", username);
            RETURN_FALSE;
        }
    } else {
        if (libssh2_userauth_password_ex(session, username, username_len, password_key, strlen(password_key), NULL)) {


            php_error_docref(NULL TSRMLS_CC, E_WARNING, "Authentication failed for %s using password", username);
            RETURN_FALSE;

        }
    }

    RETURN_TRUE;
}


/* After applying this patch all the SSH auth modes are now supported by the library*/

Test Script remains the same as below.

Test script:
---------------
<?php
/* The SSh server must have keyboard_interactive login only.
To check the existing auth types we can use ssh2_auth_none which returns an array of auth types. Without the patch the ssh2_auth_password will return failure*/
function connect() 
{

        $host = "192.168.169.100"; //to be replaced with test ip
        $port = "22";
        $username = "username";
        $password = "password";
        $this->connection = @ssh2_connect($host, $port);
        if ($this->connection or die("Undefined Host $host")) {
           if (!@ssh2_auth_password($this->connection, $username, $password)) 
           {
             $auth_methods = ssh2_auth_none($this->connection, $username);
             print_r($auth_methods);
             echo "Auth Failed";
             return 0;
           }  
           else
           {
             echo "Auth Suucess";
             return 1;
           }  
        } else {
            echo "Could not connect to $host on port $port.";
            return 0;
        }
}



Expected result:
----------------
Auth Success

Actual result:
--------------
Auth failed