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ssh2_fopen_wrappers.c
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ssh2_fopen_wrappers.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Sara Golemon <pollita@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ssh2.h"
void *php_ssh2_zval_from_resource_handle(int handle) {
zval *val;
zend_resource *zr;
ZEND_HASH_FOREACH_VAL(&EG(regular_list), val) {
zr = Z_RES_P(val);
if (zr->handle == handle) {
return val;
}
} ZEND_HASH_FOREACH_END();
return NULL;
}
/* **********************
* channel_stream_ops *
********************** */
static size_t php_ssh2_channel_stream_write(php_stream *stream, const char *buf, size_t count)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
size_t writestate;
LIBSSH2_SESSION *session;
libssh2_channel_set_blocking(abstract->channel, abstract->is_blocking);
session = (LIBSSH2_SESSION *)zend_fetch_resource(abstract->session_rsrc, PHP_SSH2_SESSION_RES_NAME, le_ssh2_session);
#ifdef PHP_SSH2_SESSION_TIMEOUT
if (abstract->is_blocking) {
libssh2_session_set_timeout(session, abstract->timeout);
}
#endif
writestate = libssh2_channel_write_ex(abstract->channel, abstract->streamid, buf, count);
#ifdef PHP_SSH2_SESSION_TIMEOUT
if (abstract->is_blocking) {
libssh2_session_set_timeout(session, 0);
}
#endif
if (writestate == LIBSSH2_ERROR_EAGAIN) {
writestate = 0;
}
if (writestate < 0) {
char *error_msg = NULL;
if (libssh2_session_last_error(session, &error_msg, NULL, 0) == writestate) {
php_error_docref(NULL, E_WARNING, "Failure '%s' (%ld)", error_msg, writestate);
}
stream->eof = 1;
writestate = 0;
}
return writestate;
}
static size_t php_ssh2_channel_stream_read(php_stream *stream, char *buf, size_t count)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
ssize_t readstate;
LIBSSH2_SESSION *session;
stream->eof = libssh2_channel_eof(abstract->channel);
libssh2_channel_set_blocking(abstract->channel, abstract->is_blocking);
session = (LIBSSH2_SESSION *)zend_fetch_resource(abstract->session_rsrc, PHP_SSH2_SESSION_RES_NAME, le_ssh2_session);
#ifdef PHP_SSH2_SESSION_TIMEOUT
if (abstract->is_blocking) {
libssh2_session_set_timeout(session, abstract->timeout);
}
#endif
readstate = libssh2_channel_read_ex(abstract->channel, abstract->streamid, buf, count);
#ifdef PHP_SSH2_SESSION_TIMEOUT
if (abstract->is_blocking) {
libssh2_session_set_timeout(session, 0);
}
#endif
if (readstate == LIBSSH2_ERROR_EAGAIN) {
readstate = 0;
}
if (readstate < 0) {
char *error_msg = NULL;
if (libssh2_session_last_error(session, &error_msg, NULL, 0) == readstate) {
php_error_docref(NULL, E_WARNING, "Failure '%s' (%ld)", error_msg, readstate);
}
stream->eof = 1;
readstate = 0;
}
return readstate;
}
static int php_ssh2_channel_stream_close(php_stream *stream, int close_handle)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
if (!abstract->refcount || (--(*(abstract->refcount)) == 0)) {
/* Last one out, turn off the lights */
if (abstract->refcount) {
efree(abstract->refcount);
}
libssh2_channel_eof(abstract->channel);
libssh2_channel_free(abstract->channel);
zend_list_delete(abstract->session_rsrc);
}
efree(abstract);
return 0;
}
static int php_ssh2_channel_stream_flush(php_stream *stream)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
return libssh2_channel_flush_ex(abstract->channel, abstract->streamid);
}
static int php_ssh2_channel_stream_set_option(php_stream *stream, int option, int value, void *ptrparam)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
int ret;
switch (option) {
case PHP_STREAM_OPTION_BLOCKING:
ret = abstract->is_blocking;
abstract->is_blocking = value;
return ret;
break;
case PHP_STREAM_OPTION_META_DATA_API:
add_assoc_long((zval*)ptrparam, "exit_status", libssh2_channel_get_exit_status(abstract->channel));
break;
case PHP_STREAM_OPTION_READ_TIMEOUT:
ret = abstract->timeout;
#ifdef PHP_SSH2_SESSION_TIMEOUT
struct timeval tv = *(struct timeval*)ptrparam;
abstract->timeout = tv.tv_sec * 1000 + (tv.tv_usec / 1000);
#else
php_error_docref(NULL, E_WARNING, "No support for ssh2 stream timeout. Please recompile with libssh2 >= 1.2.9");
#endif
return ret;
break;
case PHP_STREAM_OPTION_CHECK_LIVENESS:
return stream->eof = libssh2_channel_eof(abstract->channel);
break;
}
return -1;
}
php_stream_ops php_ssh2_channel_stream_ops = {
php_ssh2_channel_stream_write,
php_ssh2_channel_stream_read,
php_ssh2_channel_stream_close,
php_ssh2_channel_stream_flush,
PHP_SSH2_CHANNEL_STREAM_NAME,
NULL, /* seek */
NULL, /* cast */
NULL, /* stat */
php_ssh2_channel_stream_set_option,
};
/* *********************
* Magic Path Helper *
********************* */
/* {{{ php_ssh2_fopen_wraper_parse_path
* Parse an ssh2.*:// path
*/
php_url *php_ssh2_fopen_wraper_parse_path(const char *path, char *type, php_stream_context *context,
LIBSSH2_SESSION **psession, zend_resource **presource,
LIBSSH2_SFTP **psftp, zend_resource **psftp_rsrc)
{
php_ssh2_sftp_data *sftp_data = NULL;
LIBSSH2_SESSION *session;
php_url *resource;
zval *methods = NULL, *callbacks = NULL, zsession, *tmpzval;
zend_long resource_id;
char *h, *username = NULL, *password = NULL, *pubkey_file = NULL, *privkey_file = NULL;
int username_len = 0, password_len = 0;
h = strstr(path, "Resource id #");
if (h) {
/* Starting with 5.6.28, 7.0.13 need to be clean, else php_url_parse will fail */
char *tmp = estrdup(path);
strncpy(tmp + (h-path), h + sizeof("Resource id #")-1, strlen(tmp)-sizeof("Resource id #"));
resource = php_url_parse(tmp);
efree(tmp);
} else {
resource = php_url_parse(path);
}
if (!resource || !resource->path) {
return NULL;
}
if (strncmp(SSH2_URL_STR(resource->scheme), "ssh2.", sizeof("ssh2.") - 1)) {
/* Not an ssh wrapper */
php_url_free(resource);
return NULL;
}
if (strcmp(SSH2_URL_STR(resource->scheme) + sizeof("ssh2.") - 1, type)) {
/* Wrong ssh2. wrapper type */
php_url_free(resource);
return NULL;
}
if (!resource->host) {
return NULL;
}
/*
Find resource->path in the path string, then copy the entire string from the original path.
This includes ?query#fragment in the path string
*/
// TODO copy seems uneeded
#if PHP_VERSION_ID < 70300
{
char * s;
s = resource->path;
resource->path = estrdup(strstr(path, resource->path));
efree(s);
}
#else
{
zend_string *tmp;
tmp = resource->path;
resource->path = zend_string_init(ZSTR_VAL(resource->path), ZSTR_LEN(resource->path), 0);
zend_string_release(tmp);
}
#endif
/* Look for a resource ID to reuse a session */
if (is_numeric_string(SSH2_URL_STR(resource->host), SSH2_URL_LEN(resource->host), &resource_id, NULL, 0) == IS_LONG) {
php_ssh2_sftp_data *sftp_data;
zval *zresource;
zresource = php_ssh2_zval_from_resource_handle(resource_id);
if (psftp) {
sftp_data = (php_ssh2_sftp_data *)zend_fetch_resource(Z_RES_P(zresource), PHP_SSH2_SFTP_RES_NAME, le_ssh2_sftp);
if (sftp_data) {
/* Want the sftp layer */
Z_ADDREF_P(zresource);
*psftp_rsrc = Z_RES_P(zresource);
*psftp = sftp_data->sftp;
*presource = sftp_data->session_rsrc;
*psession = sftp_data->session;
return resource;
}
}
session = (LIBSSH2_SESSION *)zend_fetch_resource(Z_RES_P(zresource), PHP_SSH2_SESSION_RES_NAME, le_ssh2_session);
if (session) {
if (psftp) {
/* We need an sftp layer too */
LIBSSH2_SFTP *sftp = libssh2_sftp_init(session);
if (!sftp) {
php_url_free(resource);
return NULL;
}
sftp_data = emalloc(sizeof(php_ssh2_sftp_data));
sftp_data->sftp = sftp;
sftp_data->session = session;
sftp_data->session_rsrc = Z_RES_P(zresource);
Z_ADDREF_P(zresource);
*psftp_rsrc = zend_register_resource(sftp_data, le_ssh2_sftp);
*psftp = sftp;
*presource = Z_RES_P(zresource);
*psession = session;
return resource;
}
Z_ADDREF_P(zresource);
*presource = Z_RES_P(zresource);
*psession = session;
return resource;
}
}
/* Fallback on finding it in the context */
if (SSH2_URL_STR(resource->host)[0] == 0 && context && psftp &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "sftp")) != NULL &&
Z_TYPE_P(tmpzval) == IS_RESOURCE) {
php_ssh2_sftp_data *sftp_data;
sftp_data = (php_ssh2_sftp_data *)zend_fetch_resource(Z_RES_P(tmpzval), PHP_SSH2_SFTP_RES_NAME, le_ssh2_sftp);
if (sftp_data) {
Z_ADDREF_P(tmpzval);
*psftp_rsrc = Z_RES_P(tmpzval);
*psftp = sftp_data->sftp;
*presource = sftp_data->session_rsrc;
*psession = sftp_data->session;
return resource;
}
}
if (SSH2_URL_STR(resource->host)[0] == 0 && context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "session")) != NULL &&
Z_TYPE_P(tmpzval) == IS_RESOURCE) {
session = (LIBSSH2_SESSION *)zend_fetch_resource(Z_RES_P(tmpzval), PHP_SSH2_SESSION_RES_NAME, le_ssh2_session);
if (session) {
if (psftp) {
/* We need an SFTP layer too! */
LIBSSH2_SFTP *sftp = libssh2_sftp_init(session);
php_ssh2_sftp_data *sftp_data;
if (!sftp) {
php_url_free(resource);
return NULL;
}
sftp_data = emalloc(sizeof(php_ssh2_sftp_data));
sftp_data->sftp = sftp;
sftp_data->session = session;
sftp_data->session_rsrc = Z_RES_P(tmpzval);
Z_ADDREF_P(tmpzval);
*psftp_rsrc = zend_register_resource(sftp_data, le_ssh2_sftp);
*psftp = sftp;
*presource = Z_RES_P(tmpzval);
*psession = session;
return resource;
}
Z_ADDREF_P(tmpzval);
*psession = session;
*presource = Z_RES_P(tmpzval);
return resource;
}
}
/* Make our own connection then */
if (!resource->port) {
resource->port = 22;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "methods")) != NULL &&
Z_TYPE_P(tmpzval) == IS_ARRAY) {
methods = tmpzval;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "callbacks")) != NULL &&
Z_TYPE_P(tmpzval) == IS_ARRAY) {
callbacks = tmpzval;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "username")) != NULL &&
Z_TYPE_P(tmpzval) == IS_STRING) {
username = Z_STRVAL_P(tmpzval);
username_len = Z_STRLEN_P(tmpzval);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "password")) != NULL &&
Z_TYPE_P(tmpzval) == IS_STRING) {
password = Z_STRVAL_P(tmpzval);
password_len = Z_STRLEN_P(tmpzval);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "pubkey_file")) != NULL &&
Z_TYPE_P(tmpzval) == IS_STRING) {
pubkey_file = Z_STRVAL_P(tmpzval);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "privkey_file")) != NULL &&
Z_TYPE_P(tmpzval) == IS_STRING) {
privkey_file = Z_STRVAL_P(tmpzval);
}
if (resource->user) {
int len = SSH2_URL_LEN(resource->user);
if (len) {
username = SSH2_URL_STR(resource->user);
username_len = len;
}
}
if (resource->pass) {
int len = SSH2_URL_LEN(resource->pass);
if (len) {
password = SSH2_URL_STR(resource->pass);
password_len = len;
}
}
if (!username) {
/* username is a minimum */
php_url_free(resource);
return NULL;
}
session = php_ssh2_session_connect(SSH2_URL_STR(resource->host), resource->port, methods, callbacks);
if (!session) {
/* Unable to connect! */
php_url_free(resource);
return NULL;
}
/* Authenticate */
if (pubkey_file && privkey_file) {
if (php_check_open_basedir(pubkey_file) || php_check_open_basedir(privkey_file)) {
php_url_free(resource);
return NULL;
}
/* Attempt pubkey authentication */
if (!libssh2_userauth_publickey_fromfile(session, username, pubkey_file, privkey_file, password)) {
goto session_authed;
}
}
if (password) {
/* Attempt password authentication */
if (libssh2_userauth_password_ex(session, username, username_len, password, password_len, NULL) == 0) {
goto session_authed;
}
}
/* Auth failure */
php_url_free(resource);
zend_list_delete(Z_RES(zsession));
return NULL;
session_authed:
//TODO Sean-Der
//ZEND_REGISTER_RESOURCE(&zsession, session, le_ssh2_session);
if (psftp) {
LIBSSH2_SFTP *sftp;
zval zsftp;
sftp = libssh2_sftp_init(session);
if (!sftp) {
php_url_free(resource);
zend_list_delete(Z_RES(zsession));
return NULL;
}
sftp_data = emalloc(sizeof(php_ssh2_sftp_data));
sftp_data->session = session;
sftp_data->sftp = sftp;
sftp_data->session_rsrc = Z_RES(zsession);
//TODO Sean-Der
//ZEND_REGISTER_RESOURCE(sftp_data, le_ssh2_sftp);
*psftp_rsrc = Z_RES(zsftp);
*psftp = sftp;
}
*presource = Z_RES(zsession);
*psession = session;
return resource;
}
/* }}} */
/* *****************
* Shell Wrapper *
***************** */
/* {{{ php_ssh2_shell_open
* Make a stream from a session
*/
static php_stream *php_ssh2_shell_open(LIBSSH2_SESSION *session, zend_resource *resource, char *term, int term_len, zval *environment, long width, long height, long type)
{
LIBSSH2_CHANNEL *channel;
php_ssh2_channel_data *channel_data;
php_stream *stream;
libssh2_session_set_blocking(session, 1);
channel = libssh2_channel_open_session(session);
if (!channel) {
php_error_docref(NULL, E_WARNING, "Unable to request a channel from remote host");
return NULL;
}
if (environment) {
zend_string *key;
int key_type;
zend_ulong idx;
for(zend_hash_internal_pointer_reset(HASH_OF(environment));
(key_type = zend_hash_get_current_key(HASH_OF(environment), &key, &idx)) != HASH_KEY_NON_EXISTENT;
zend_hash_move_forward(HASH_OF(environment))) {
if (key_type == HASH_KEY_IS_STRING) {
zval *value;
if ((value = zend_hash_get_current_data(HASH_OF(environment))) != NULL) {
zval copyval = *value;
zval_copy_ctor(©val);
convert_to_string(©val);
if (libssh2_channel_setenv_ex(channel, key->val, key->len, Z_STRVAL(copyval), Z_STRLEN(copyval))) {
php_error_docref(NULL, E_WARNING, "Failed setting %s=%s on remote end", ZSTR_VAL(key), Z_STRVAL(copyval));
}
zval_dtor(©val);
}
} else {
php_error_docref(NULL, E_NOTICE, "Skipping numeric index in environment array");
}
}
}
if (type == PHP_SSH2_TERM_UNIT_CHARS) {
if (libssh2_channel_request_pty_ex(channel, term, term_len, NULL, 0, width, height, 0, 0)) {
php_error_docref(NULL, E_WARNING, "Failed allocating %s pty at %ldx%ld characters", term, width, height);
libssh2_channel_free(channel);
return NULL;
}
} else {
if (libssh2_channel_request_pty_ex(channel, term, term_len, NULL, 0, 0, 0, width, height)) {
php_error_docref(NULL, E_WARNING, "Failed allocating %s pty at %ldx%ld pixels", term, width, height);
libssh2_channel_free(channel);
return NULL;
}
}
if (libssh2_channel_shell(channel)) {
php_error_docref(NULL, E_WARNING, "Unable to request shell from remote host");
libssh2_channel_free(channel);
return NULL;
}
/* Turn it into a stream */
channel_data = emalloc(sizeof(php_ssh2_channel_data));
channel_data->channel = channel;
channel_data->streamid = 0;
channel_data->is_blocking = 0;
channel_data->timeout = 0;
channel_data->session_rsrc = resource;
channel_data->refcount = NULL;
stream = php_stream_alloc(&php_ssh2_channel_stream_ops, channel_data, 0, "r+");
return stream;
}
/* }}} */
/* {{{ php_ssh2_fopen_wrapper_shell
* ssh2.shell:// fopen wrapper
*/
static php_stream *php_ssh2_fopen_wrapper_shell(php_stream_wrapper *wrapper, const char *path, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC)
{
LIBSSH2_SESSION *session = NULL;
php_stream *stream;
zval *tmpzval, *environment = NULL;
char *terminal = PHP_SSH2_DEFAULT_TERMINAL;
zend_long width = PHP_SSH2_DEFAULT_TERM_WIDTH;
zend_long height = PHP_SSH2_DEFAULT_TERM_HEIGHT;
zend_long type = PHP_SSH2_DEFAULT_TERM_UNIT;
zend_resource *rsrc = NULL;
int terminal_len = sizeof(PHP_SSH2_DEFAULT_TERMINAL) - 1;
php_url *resource;
char *s;
resource = php_ssh2_fopen_wraper_parse_path(path, "shell", context, &session, &rsrc, NULL, NULL);
if (!resource || !session) {
return NULL;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "env")) != NULL && Z_TYPE_P(tmpzval) == IS_ARRAY) {
environment = tmpzval;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term")) != NULL && Z_TYPE_P(tmpzval) == IS_STRING) {
terminal = Z_STRVAL_P(tmpzval);
terminal_len = Z_STRLEN_P(tmpzval);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_width")) != NULL) {
zval copyval;
copyval = *tmpzval;
convert_to_long(©val);
width = Z_LVAL_P(©val);
zval_ptr_dtor(©val);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_height")) != NULL) {
zval copyval;
copyval = *tmpzval;
convert_to_long(©val);
height = Z_LVAL_P(©val);
zval_ptr_dtor(©val);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_units")) != NULL) {
zval copyval;
copyval = *tmpzval;
convert_to_long(©val);
type = Z_LVAL_P(©val);
zval_ptr_dtor(©val);
}
s = resource->path ? SSH2_URL_STR(resource->path) : NULL;
if (s && s[0] == '/') {
/* Terminal type encoded into URL overrides context terminal type */
char *p;
s++;
p = strchr(s, '/');
if (p) {
if (p - s) {
terminal = s;
terminal_len = p - terminal;
s += terminal_len + 1;
} else {
/* "null" terminal given, skip it */
s++;
}
} else {
int len;
if ((len = strlen(path + 1))) {
terminal = s;
terminal_len = len;
s += len;
}
}
}
/* TODO: Accept resolution and environment vars as URL style parameters
* ssh2.shell://hostorresource/terminal/99x99c?envvar=envval&envvar=envval....
*/
stream = php_ssh2_shell_open(session, rsrc, terminal, terminal_len, environment, width, height, type);
if (!stream) {
zend_list_delete(rsrc);
}
php_url_free(resource);
return stream;
}
/* }}} */
static php_stream_wrapper_ops php_ssh2_shell_stream_wops = {
php_ssh2_fopen_wrapper_shell,
NULL, /* stream_close */
NULL, /* stat */
NULL, /* stat_url */
NULL, /* opendir */
"ssh2.shell"
};
php_stream_wrapper php_ssh2_stream_wrapper_shell = {
&php_ssh2_shell_stream_wops,
NULL,
0
};
/* {{{ proto stream ssh2_shell(resource session[, string term_type[, array env[, int width, int height[, int width_height_type]]]])
* Open a shell at the remote end and allocate a channel for it
*/
PHP_FUNCTION(ssh2_shell)
{
LIBSSH2_SESSION *session;
php_stream *stream;
zval *zsession;
zval *environment = NULL;
char *term = PHP_SSH2_DEFAULT_TERMINAL;
size_t term_len = sizeof(PHP_SSH2_DEFAULT_TERMINAL) - 1;
zend_long width = PHP_SSH2_DEFAULT_TERM_WIDTH;
zend_long height = PHP_SSH2_DEFAULT_TERM_HEIGHT;
zend_long type = PHP_SSH2_DEFAULT_TERM_UNIT;
int argc = ZEND_NUM_ARGS();
if (argc == 5) {
php_error_docref(NULL, E_ERROR, "width specified without height parameter");
RETURN_FALSE;
}
if (zend_parse_parameters(argc, "r|sa!lll", &zsession, &term, &term_len, &environment, &width, &height, &type) == FAILURE) {
return;
}
SSH2_FETCH_AUTHENTICATED_SESSION(session, zsession);
stream = php_ssh2_shell_open(session, Z_RES_P(zsession), term, term_len, environment, width, height, type);
if (!stream) {
RETURN_FALSE;
}
/* Ensure that channels are freed BEFORE the sessions they belong to */
Z_ADDREF_P(zsession);
php_stream_to_zval(stream, return_value);
}
/* }}} */
/* ****************
* Exec Wrapper *
**************** */
/* {{{ php_ssh2_exec_command
* Make a stream from a session
*/
static php_stream *php_ssh2_exec_command(LIBSSH2_SESSION *session, zend_resource *rsrc, char *command, char *term, int term_len, zval *environment, long width, long height, long type)
{
LIBSSH2_CHANNEL *channel;
php_ssh2_channel_data *channel_data;
php_stream *stream;
libssh2_session_set_blocking(session, 1);
channel = libssh2_channel_open_session(session);
if (!channel) {
php_error_docref(NULL, E_WARNING, "Unable to request a channel from remote host");
return NULL;
}
if (environment) {
zend_string *key = NULL;
int key_type;
zend_ulong idx = 0;
HashPosition pos;
for(zend_hash_internal_pointer_reset_ex(HASH_OF(environment), &pos);
(key_type = zend_hash_get_current_key_ex(HASH_OF(environment), &key, &idx, &pos)) != HASH_KEY_NON_EXISTENT;
zend_hash_move_forward_ex(HASH_OF(environment), &pos)) {
if (key_type == HASH_KEY_IS_STRING) {
zval *value;
if ((value = zend_hash_get_current_data(HASH_OF(environment))) != NULL) {
zval copyval = *value;
zval_copy_ctor(©val);
convert_to_string(©val);
if (libssh2_channel_setenv_ex(channel, key->val, key->len, Z_STRVAL(copyval), Z_STRLEN(copyval))) {
php_error_docref(NULL, E_WARNING, "Failed setting %s=%s on remote end", ZSTR_VAL(key), Z_STRVAL(copyval));
}
zval_dtor(©val);
}
} else {
php_error_docref(NULL, E_NOTICE, "Skipping numeric index in environment array");
}
}
}
if (term) {
if (type == PHP_SSH2_TERM_UNIT_CHARS) {
if (libssh2_channel_request_pty_ex(channel, term, term_len, NULL, 0, width, height, 0, 0)) {
php_error_docref(NULL, E_WARNING, "Failed allocating %s pty at %ldx%ld characters", term, width, height);
libssh2_channel_free(channel);
return NULL;
}
} else {
if (libssh2_channel_request_pty_ex(channel, term, term_len, NULL, 0, 0, 0, width, height)) {
php_error_docref(NULL, E_WARNING, "Failed allocating %s pty at %ldx%ld pixels", term, width, height);
libssh2_channel_free(channel);
return NULL;
}
}
}
if (libssh2_channel_exec(channel, command)) {
php_error_docref(NULL, E_WARNING, "Unable to request command execution on remote host");
libssh2_channel_free(channel);
return NULL;
}
/* Turn it into a stream */
channel_data = emalloc(sizeof(php_ssh2_channel_data));
channel_data->channel = channel;
channel_data->streamid = 0;
channel_data->is_blocking = 0;
channel_data->timeout = 0;
channel_data->session_rsrc = rsrc;
channel_data->refcount = NULL;
stream = php_stream_alloc(&php_ssh2_channel_stream_ops, channel_data, 0, "r+");
return stream;
}
/* }}} */
/* {{{ php_ssh2_fopen_wrapper_exec
* ssh2.exec:// fopen wrapper
*/
static php_stream *php_ssh2_fopen_wrapper_exec(php_stream_wrapper *wrapper, const char *path, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC)
{
LIBSSH2_SESSION *session = NULL;
php_stream *stream;
zval *tmpzval, *environment = NULL;
zend_resource *rsrc = NULL;
php_url *resource;
char *terminal = NULL;
int terminal_len = 0;
long width = PHP_SSH2_DEFAULT_TERM_WIDTH;
long height = PHP_SSH2_DEFAULT_TERM_HEIGHT;
long type = PHP_SSH2_DEFAULT_TERM_UNIT;
resource = php_ssh2_fopen_wraper_parse_path(path, "exec", context, &session, &rsrc, NULL, NULL);
if (!resource || !session) {
return NULL;
}
if (!resource->path) {
php_url_free(resource);
zend_list_delete(rsrc);
return NULL;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "env")) != NULL && Z_TYPE_P(tmpzval) == IS_ARRAY) {
environment = tmpzval;
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term")) != NULL && Z_TYPE_P(tmpzval) == IS_STRING) {
terminal = Z_STRVAL_P(tmpzval);
terminal_len = Z_STRLEN_P(tmpzval);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_width")) != NULL) {
zval copyval;
copyval = *tmpzval;
convert_to_long(©val);
width = Z_LVAL_P(©val);
zval_ptr_dtor(©val);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_height")) != NULL) {
zval copyval;
copyval = *tmpzval;
convert_to_long(©val);
height = Z_LVAL_P(©val);
zval_ptr_dtor(©val);
}
if (context &&
(tmpzval = php_stream_context_get_option(context, "ssh2", "term_units")) != NULL) {
zval *copyval;
copyval = tmpzval;
convert_to_long(copyval);
type = Z_LVAL_P(copyval);
zval_ptr_dtor(copyval);
}
stream = php_ssh2_exec_command(session, rsrc, SSH2_URL_STR(resource->path) + 1, terminal, terminal_len, environment, width, height, type);
if (!stream) {
zend_list_delete(rsrc);
}
php_url_free(resource);
return stream;
}
/* }}} */
static php_stream_wrapper_ops php_ssh2_exec_stream_wops = {
php_ssh2_fopen_wrapper_exec,
NULL, /* stream_close */
NULL, /* stat */
NULL, /* stat_url */
NULL, /* opendir */
"ssh2.exec"
};
php_stream_wrapper php_ssh2_stream_wrapper_exec = {
&php_ssh2_exec_stream_wops,
NULL,
0
};
/* {{{ proto stream ssh2_exec(resource session, string command[, string pty[, array env[, int width[, int height[, int width_height_type]]]]])
* Execute a command at the remote end and allocate a channel for it
*
* This function has a dirty little secret.... pty and env can be in either order.... shhhh... don't tell anyone
*/
PHP_FUNCTION(ssh2_exec)
{
LIBSSH2_SESSION *session;
php_stream *stream;
zval *zsession;
zval *environment = NULL;
zval *zpty = NULL;
char *command;
size_t command_len;
zend_long width = PHP_SSH2_DEFAULT_TERM_WIDTH;
zend_long height = PHP_SSH2_DEFAULT_TERM_HEIGHT;
zend_long type = PHP_SSH2_DEFAULT_TERM_UNIT;
char *term = NULL;
int term_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "rs|z!z!lll", &zsession, &command, &command_len, &zpty, &environment, &width, &height, &type) == FAILURE) {
return;
}
if (zpty && Z_TYPE_P(zpty) == IS_ARRAY) {
/* Swap pty and environment -- old call style */
zval *tmp = zpty;
zpty = environment;
environment = tmp;
}
if (environment && Z_TYPE_P(environment) != IS_ARRAY) {
php_error_docref(NULL, E_WARNING, "ssh2_exec() expects arg 4 to be of type array");
RETURN_FALSE;
}
if (zpty) {
convert_to_string(zpty);
term = Z_STRVAL_P(zpty);
term_len = Z_STRLEN_P(zpty);
}
SSH2_FETCH_AUTHENTICATED_SESSION(session, zsession);
stream = php_ssh2_exec_command(session, Z_RES_P(zsession), command, term, term_len, environment, width, height, type);
if (!stream) {
RETURN_FALSE;
}
/* Ensure that channels are freed BEFORE the sessions they belong to */
Z_ADDREF_P(zsession);
php_stream_to_zval(stream, return_value);
}
/* }}} */
/* ***************
* SCP Wrapper *
*************** */
/* {{{ php_ssh2_scp_xfer
* Make a stream from a session
*/
static php_stream *php_ssh2_scp_xfer(LIBSSH2_SESSION *session, zend_resource *rsrc, char *filename)
{
LIBSSH2_CHANNEL *channel;
php_ssh2_channel_data *channel_data;
php_stream *stream;
channel = libssh2_scp_recv(session, filename, NULL);
if (!channel) {
char *error = "";
libssh2_session_last_error(session, &error, NULL, 0);
php_error_docref(NULL, E_WARNING, "Unable to request a channel from remote host: %s", error);
return NULL;
}
/* Turn it into a stream */
channel_data = emalloc(sizeof(php_ssh2_channel_data));
channel_data->channel = channel;
channel_data->streamid = 0;
channel_data->is_blocking = 0;
channel_data->timeout = 0;
channel_data->session_rsrc = rsrc;
channel_data->refcount = NULL;
stream = php_stream_alloc(&php_ssh2_channel_stream_ops, channel_data, 0, "r");
return stream;
}
/* }}} */
/* {{{ php_ssh2_fopen_wrapper_scp
* ssh2.scp:// fopen wrapper (Read mode only, if you want to know why write mode isn't supported as a stream, take a look at the SCP protocol)