Add ftp_alloc() for servers which require client to predeclare filesize to be sent.

Author: sgolemon

ext/ftp/ftp.c

@@ -605,6 +605,38 @@ ftp_chmod(ftpbuf_t *ftp, const int mode, const char *filename, const int filenam
 }
 /* }}} */
 
+/* {{{ ftp_alloc
+ */
+int
+ftp_alloc(ftpbuf_t *ftp, const int size, char **response)
+{
+	char buffer[64];
+
+	if (ftp == NULL || size <= 0) {
+		return 0;
+	}
+
+	snprintf(buffer, 64, "%d", size);
+
+	if (!ftp_putcmd(ftp, "ALLO", buffer)) {
+		return 0;
+	}
+
+	if (!ftp_getresp(ftp)) {
+		return 0;
+	}
+
+	if (response && ftp->inbuf) {
+		*response = estrdup(ftp->inbuf);
+	}
+
+	if (ftp->resp < 200 || ftp->resp >= 300) {
+		return 0;
+	}
+
+	return 1;	
+}
+/* }}} */
 
 /* {{{ ftp_nlist
  */

ext/ftp/ftp.h

@@ -141,6 +141,13 @@ int		ftp_rmdir(ftpbuf_t *ftp, const char *dir);
 /* Set permissions on a file */
 int		ftp_chmod(ftpbuf_t *ftp, const int mode, const char *filename, const int filename_len);
 
+/* Allocate space on remote server with ALLO command
+ * Many servers will respond with 202 Allocation not necessary,
+ * however some servers will not accept STOR or APPE until ALLO is confirmed. 
+ * If response is passed, it is estrdup()ed from ftp->inbuf and must be freed
+ * or assigned to a zval returned to the user */
+int		ftp_alloc(ftpbuf_t *ftp, const int size, char **response);
+
 /* returns a NULL-terminated array of filenames in the given path
  * or NULL on error.  the return array must be freed (but don't
  * free the array elements)

ext/ftp/php_ftp.c

@@ -50,6 +50,13 @@
 static int	le_ftpbuf;
 #define le_ftpbuf_name "FTP Buffer"
 
+static
+    ZEND_BEGIN_ARG_INFO(third_and_rest_force_ref, 1)
+        ZEND_ARG_PASS_INFO(0)
+        ZEND_ARG_PASS_INFO(0)
+        ZEND_ARG_PASS_INFO(1)
+    ZEND_END_ARG_INFO()
+
 function_entry php_ftp_functions[] = {
 	PHP_FE(ftp_connect,			NULL)
 #ifdef HAVE_OPENSSL_EXT
@@ -64,6 +71,7 @@ function_entry php_ftp_functions[] = {
 	PHP_FE(ftp_mkdir,			NULL)
 	PHP_FE(ftp_rmdir,			NULL)
 	PHP_FE(ftp_chmod,			NULL)
+	PHP_FE(ftp_alloc,			third_and_rest_force_ref)
 	PHP_FE(ftp_nlist,			NULL)
 	PHP_FE(ftp_rawlist,			NULL)
 	PHP_FE(ftp_systype,			NULL)
@@ -430,6 +438,35 @@ PHP_FUNCTION(ftp_chmod)
 }
 /* }}} */
 
+/* {{{ proto bool ftp_alloc(resource stream, int size[, &response])
+   Attempt to allocate space on the remote FTP server */
+PHP_FUNCTION(ftp_alloc)
+{
+	zval		*z_ftp, *zresponse = NULL;
+	ftpbuf_t	*ftp;
+	int			size, ret;
+	char		*response = NULL;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl|z", &z_ftp, &size, &zresponse) == FAILURE) {
+		RETURN_FALSE;
+	}
+
+	ZEND_FETCH_RESOURCE(ftp, ftpbuf_t*, &z_ftp, -1, le_ftpbuf_name, le_ftpbuf);
+
+	ret = ftp_alloc(ftp, size, zresponse ? &response : NULL);
+	if (response) {
+		zval_dtor(zresponse);
+		ZVAL_STRING(zresponse, response, 0);
+	}
+
+	if (!ret) {
+		RETURN_FALSE;
+	}
+
+	RETURN_TRUE;
+}
+/* }}} */
+
 /* {{{ proto array ftp_nlist(resource stream, string directory)
    Returns an array of filenames in the given directory */
 PHP_FUNCTION(ftp_nlist)

ext/ftp/php_ftp.h

@@ -47,6 +47,7 @@ PHP_FUNCTION(ftp_raw);
 PHP_FUNCTION(ftp_mkdir);
 PHP_FUNCTION(ftp_rmdir);
 PHP_FUNCTION(ftp_chmod);
+PHP_FUNCTION(ftp_alloc);
 PHP_FUNCTION(ftp_nlist);
 PHP_FUNCTION(ftp_rawlist);
 PHP_FUNCTION(ftp_systype);