From 089c0a4c54d87b0b858c337221ee622e8565ac39 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 14:55:56 -0500
Subject: [PATCH 01/20] Add functionality for LOAD LOCAL INFILE command.

---
 pymysql/connections.py | 65 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 62 insertions(+), 3 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index b9449c9..ed3ca18 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1,8 +1,7 @@
 # Python implementation of the MySQL client-server protocol
 # http://dev.mysql.com/doc/internals/en/client-server-protocol.html
 # Error codes:
-# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html
-
+# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html''from __future__ import print_function
 from __future__ import print_function
 from ._compat import PY2, range_type, text_type, str_type, JYTHON, IRONPYTHON
 DEBUG = False
@@ -334,6 +333,12 @@ class MysqlPacket(object):
         field_count = ord(self._data[0:1])
         return 1 <= field_count <= 250
 
+    def is_local_file_packet(self):
+        return self._data[0:1] == b'\xfb'
+
+    def get_local_file_name(self):
+        return self._data[1:]
+
     def is_error_packet(self):
         return self._data[0:1] == b'\xff'
 
@@ -472,7 +477,7 @@ class Connection(object):
                  client_flag=0, cursorclass=Cursor, init_command=None,
                  connect_timeout=None, ssl=None, read_default_group=None,
                  compress=None, named_pipe=None, no_delay=False,
-                 autocommit=False, db=None, passwd=None):
+                 autocommit=False, db=None, passwd=None, load_local=False):
         """
         Establish a connection to the MySQL database. Accepts several
         arguments:
@@ -521,6 +526,9 @@ class Connection(object):
         if compress or named_pipe:
             raise NotImplementedError("compress and named_pipe arguments are not supported")
 
+        if load_local:
+            client_flag |= CLIENT.LOCAL_FILES
+
         if ssl and ('capath' in ssl or 'cipher' in ssl):
             raise NotImplementedError('ssl options capath and cipher are not supported')
 
@@ -1069,6 +1077,9 @@ class MySQLResult(object):
             # TODO: use classes for different packet types?
             if first_packet.is_ok_packet():
                 self._read_ok_packet(first_packet)
+            if first_packet.is_local_file_packet():
+                local_packet = LoadLocalFile(first_packet.get_local_file_name(), self.connection)
+                local_packet.send_data()
             else:
                 self._read_result_packet(first_packet)
         finally:
@@ -1191,4 +1202,52 @@ class MySQLResult(object):
         assert eof_packet.is_eof_packet(), 'Protocol error, expecting EOF'
         self.description = tuple(description)
 
+
+class LoadLocalFile(object):
+    def __init__(self, filename, connection):
+        self.filename = filename
+        self.connection = connection
+
+    def send_data(self):
+        """Send data packets from the local file"""
+        if not self.connection.socket:
+            raise InterfaceError("(0, '')")
+
+        with open(self.filename, 'r') as open_file:
+            chunk_size = MAX_PACKET_LEN
+            prelude = ""
+            packet = ""
+            packet_size = 0
+            # sequence id is 2 as we already sent a query packet
+            seq_id = 2
+
+            for line in open_file:
+                line_length = len(line)
+                format_str = '!{0}s'.format(line_length)
+                line = line.encode(self.connection.encoding)
+                if packet_size + len(line) < chunk_size:
+                    packet += struct.pack(format_str, line)
+                    packet_size += line_length
+                else:
+                    # send the existing packet when we have reached the chunk size
+                    prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
+                    packet = prelude + packet
+                    self.connection._write_bytes(packet)
+
+                    seq_id += 1
+                    packet = struct.pack(format_str, line)
+                    packet_size = line_length
+
+            # send the last data packet
+            prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
+            packet = prelude + packet
+            self.connection._write_bytes(packet)
+
+            # send the empty packet to signify we are done sending data
+            seq_id += 1
+            packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
+            self.connection._write_bytes(packet)
+
+            self.connection._read_ok_packet()
+
 # g:khuno_ignore='E226,E301,E701'

From 2ff076c2b03c86f785e6b6c08979b6128557d6dd Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 14:59:03 -0500
Subject: [PATCH 02/20] Cleanup

---
 pymysql/connections.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index ed3ca18..e7367b4 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1,7 +1,7 @@
 # Python implementation of the MySQL client-server protocol
 # http://dev.mysql.com/doc/internals/en/client-server-protocol.html
 # Error codes:
-# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html''from __future__ import print_function
+# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html''
 from __future__ import print_function
 from ._compat import PY2, range_type, text_type, str_type, JYTHON, IRONPYTHON
 DEBUG = False

From 3d62ff370cc490e41a94db144da91e4eebcc8092 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 15:53:48 -0500
Subject: [PATCH 03/20] Add filename checking for load local.

This should prevent a security issue where the server returns a filename
that is different from the one supplied by the client and potentially gaining
access to any file that the client has access to.
---
 pymysql/connections.py | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index e7367b4..9249fe6 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -14,6 +14,7 @@ import os
 import socket
 import struct
 import sys
+import re
 
 try:
     import ssl
@@ -528,6 +529,7 @@ class Connection(object):
 
         if load_local:
             client_flag |= CLIENT.LOCAL_FILES
+            self.local_file = None
 
         if ssl and ('capath' in ssl or 'cipher' in ssl):
             raise NotImplementedError('ssl options capath and cipher are not supported')
@@ -895,6 +897,12 @@ class Connection(object):
         if self._result is not None and self._result.unbuffered_active:
             self._result._finish_unbuffered_query()
 
+        local_file_name = re.search('load local infile (?P<file_name>\w+\.\w+)', flags=re.IGNORECASE)
+        if local_file_name:
+            self.local_file = local_file_name.groupdict().get('file_name')
+        else:
+            self.local_file = None
+
         if isinstance(sql, text_type):
             sql = sql.encode(self.encoding)
 
@@ -1078,8 +1086,14 @@ class MySQLResult(object):
             if first_packet.is_ok_packet():
                 self._read_ok_packet(first_packet)
             if first_packet.is_local_file_packet():
-                local_packet = LoadLocalFile(first_packet.get_local_file_name(), self.connection)
-                local_packet.send_data()
+                requested_file = first_packet.get_local_file_name()
+                # ensure the filename returned by the server matches the
+                # file we asked to load in the initial query
+                if self.connection.local_file is requested_file:
+                    local_packet = LoadLocalFile(requested_file, self.connection)
+                    local_packet.send_data()
+                else:
+                    raise OperationalError(2014, "Command Out of Sync")
             else:
                 self._read_result_packet(first_packet)
         finally:

From 3ef02dacfa422d804cc38a8d3bd357602ced8dfc Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 16:00:49 -0500
Subject: [PATCH 04/20] Fix regex error

---
 pymysql/connections.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 9249fe6..77f17b5 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -897,7 +897,7 @@ class Connection(object):
         if self._result is not None and self._result.unbuffered_active:
             self._result._finish_unbuffered_query()
 
-        local_file_name = re.search('load local infile (?P<file_name>\w+\.\w+)', flags=re.IGNORECASE)
+        local_file_name = re.search('load local infile (?P<file_name>\w+\.\w+)', sql, flags=re.IGNORECASE)
         if local_file_name:
             self.local_file = local_file_name.groupdict().get('file_name')
         else:

From adaa1accd6c7980e7778923bc46da82fd68ec1e6 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 17:00:31 -0500
Subject: [PATCH 05/20] Simplify filename regex

---
 pymysql/connections.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 77f17b5..b921a0b 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -897,7 +897,7 @@ class Connection(object):
         if self._result is not None and self._result.unbuffered_active:
             self._result._finish_unbuffered_query()
 
-        local_file_name = re.search('load local infile (?P<file_name>\w+\.\w+)', sql, flags=re.IGNORECASE)
+        local_file_name = re.search('load data local infile \'(?P<file_name>[^\']+)\'', sql, flags=re.IGNORECASE)
         if local_file_name:
             self.local_file = local_file_name.groupdict().get('file_name')
         else:
@@ -1089,7 +1089,7 @@ class MySQLResult(object):
                 requested_file = first_packet.get_local_file_name()
                 # ensure the filename returned by the server matches the
                 # file we asked to load in the initial query
-                if self.connection.local_file is requested_file:
+                if self.connection.local_file == requested_file:
                     local_packet = LoadLocalFile(requested_file, self.connection)
                     local_packet.send_data()
                 else:

From b7551d25d01d4d889ccab0083fbfe6f2653f72b8 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 6 Jan 2015 17:04:30 -0500
Subject: [PATCH 06/20] Cleanup

---
 pymysql/connections.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index b921a0b..8dac3c8 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1,7 +1,7 @@
 # Python implementation of the MySQL client-server protocol
 # http://dev.mysql.com/doc/internals/en/client-server-protocol.html
 # Error codes:
-# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html''
+# http://dev.mysql.com/doc/refman/5.5/en/error-messages-client.html
 from __future__ import print_function
 from ._compat import PY2, range_type, text_type, str_type, JYTHON, IRONPYTHON
 DEBUG = False

From 0ea120e29a4017401a6c089f59afb597b47da25a Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 10:29:07 -0500
Subject: [PATCH 07/20] Restructure load local code

---
 pymysql/connections.py | 115 +++++++++++++++++++++++++----------------
 1 file changed, 71 insertions(+), 44 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 8dac3c8..9948a83 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -334,12 +334,9 @@ class MysqlPacket(object):
         field_count = ord(self._data[0:1])
         return 1 <= field_count <= 250
 
-    def is_local_file_packet(self):
+    def is_load_local_packet(self):
         return self._data[0:1] == b'\xfb'
 
-    def get_local_file_name(self):
-        return self._data[1:]
-
     def is_error_packet(self):
         return self._data[0:1] == b'\xff'
 
@@ -460,6 +457,29 @@ class EOFPacketWrapper(object):
         return getattr(self.packet, key)
 
 
+
+class LoadLocalPacketWrapper(object):
+    """
+    Load Local Packet Wrapper. It uses an existing packet object, and wraps
+    around it, exposing useful variables while still providing access
+    to the original packet objects variables and methods.
+    """
+
+    def __init__(self, from_packet):
+        if not from_packet.is_load_local_packet():
+            raise ValueError(
+                "Cannot create '{0}' object from invalid packet type".format(
+                    self.__class__))
+
+        self.packet = from_packet
+        self.filename = self.packet.get_all_data()[1:]
+        if DEBUG: print("filename=", self.filename)
+
+    def __getattr__(self, key):
+        return getattr(self.packet, key)
+
+
+
 class Connection(object):
     """
     Representation of a socket with a mysql server.
@@ -1085,15 +1105,8 @@ class MySQLResult(object):
             # TODO: use classes for different packet types?
             if first_packet.is_ok_packet():
                 self._read_ok_packet(first_packet)
-            if first_packet.is_local_file_packet():
-                requested_file = first_packet.get_local_file_name()
-                # ensure the filename returned by the server matches the
-                # file we asked to load in the initial query
-                if self.connection.local_file == requested_file:
-                    local_packet = LoadLocalFile(requested_file, self.connection)
-                    local_packet.send_data()
-                else:
-                    raise OperationalError(2014, "Command Out of Sync")
+            elif first_packet.is_load_local_packet():
+                self._read_load_local_packet(first_packet)
             else:
                 self._read_result_packet(first_packet)
         finally:
@@ -1125,6 +1138,16 @@ class MySQLResult(object):
         self.message = ok_packet.message
         self.has_next = ok_packet.has_next
 
+    def _read_load_local_packet(self, first_packet):
+        load_packet = LoadLocalPacketWrapper(first_packet)
+        # ensure the filename returned by the server matches the
+        # file we asked to load in the initial query
+        if self.connection.local_file == load_packet.filename:
+            local_packet = LoadLocalFile(load_packet.filename, self.connection)
+            local_packet.send_data()
+        else:
+            raise OperationalError(2014, "Command Out of Sync")
+
     def _check_packet_is_eof(self, packet):
         if packet.is_eof_packet():
             eof_packet = EOFPacketWrapper(packet)
@@ -1227,41 +1250,45 @@ class LoadLocalFile(object):
         if not self.connection.socket:
             raise InterfaceError("(0, '')")
 
-        with open(self.filename, 'r') as open_file:
-            chunk_size = MAX_PACKET_LEN
-            prelude = ""
-            packet = ""
-            packet_size = 0
-            # sequence id is 2 as we already sent a query packet
-            seq_id = 2
+        try:
+            with open(self.filename, 'r') as open_file:
+                chunk_size = MAX_PACKET_LEN
+                prelude = ""
+                packet = ""
+                packet_size = 0
+                # sequence id is 2 as we already sent a query packet
+                seq_id = 2
 
-            for line in open_file:
-                line_length = len(line)
-                format_str = '!{0}s'.format(line_length)
-                line = line.encode(self.connection.encoding)
-                if packet_size + len(line) < chunk_size:
-                    packet += struct.pack(format_str, line)
-                    packet_size += line_length
-                else:
-                    # send the existing packet when we have reached the chunk size
-                    prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
-                    packet = prelude + packet
-                    self.connection._write_bytes(packet)
+                for line in open_file:
+                    line_length = len(line)
+                    format_str = '!{0}s'.format(line_length)
+                    line = line.encode(self.connection.encoding)
+                    if packet_size + len(line) < chunk_size:
+                        packet += struct.pack(format_str, line)
+                        packet_size += line_length
+                    else:
+                        # send the existing packet when we have reached the chunk size
+                        prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
+                        packet = prelude + packet
+                        self.connection._write_bytes(packet)
 
-                    seq_id += 1
-                    packet = struct.pack(format_str, line)
-                    packet_size = line_length
+                        seq_id += 1
+                        packet = struct.pack(format_str, line)
+                        packet_size = line_length
 
-            # send the last data packet
-            prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
-            packet = prelude + packet
-            self.connection._write_bytes(packet)
+                # send the last data packet
+                prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
+                packet = prelude + packet
+                self.connection._write_bytes(packet)
 
-            # send the empty packet to signify we are done sending data
-            seq_id += 1
-            packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
-            self.connection._write_bytes(packet)
+                # send the empty packet to signify we are done sending data
+                seq_id += 1
+                packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
+                self.connection._write_bytes(packet)
+
+                self.connection._read_ok_packet()
+        except IOError:
+            raise OperationalError(1017, "Can't find file '{}'".format(self.filename))
 
-            self.connection._read_ok_packet()
 
 # g:khuno_ignore='E226,E301,E701'

From 5923e19578422993013f93b3a6c4ca6a0b95da57 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 13:46:42 -0500
Subject: [PATCH 08/20] Print warnings from load local

---
 pymysql/connections.py | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 9948a83..776f9f6 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -15,6 +15,7 @@ import socket
 import struct
 import sys
 import re
+import traceback
 
 try:
     import ssl
@@ -1245,11 +1246,22 @@ class LoadLocalFile(object):
         self.filename = filename
         self.connection = connection
 
+    def _print_warnings(self):
+        self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
+        self.connection._read_query_result()
+        warnings = self.connection._result.rows
+        if warnings:
+            warning_source = list(traceback.extract_stack())[0]
+            print("{}:{}: {}".format(warning_source[0], warning_source[1], warning_source[3]))
+            for warning in warnings:
+                print("  Warning: {}".format(warning[2]))
+
     def send_data(self):
-        """Send data packets from the local file"""
+        """Send data packets from the local file to the server"""
         if not self.connection.socket:
             raise InterfaceError("(0, '')")
 
+        seq_id = 2
         try:
             with open(self.filename, 'r') as open_file:
                 chunk_size = MAX_PACKET_LEN
@@ -1257,7 +1269,6 @@ class LoadLocalFile(object):
                 packet = ""
                 packet_size = 0
                 # sequence id is 2 as we already sent a query packet
-                seq_id = 2
 
                 for line in open_file:
                     line_length = len(line)
@@ -1280,15 +1291,18 @@ class LoadLocalFile(object):
                 prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
                 packet = prelude + packet
                 self.connection._write_bytes(packet)
-
-                # send the empty packet to signify we are done sending data
                 seq_id += 1
-                packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
-                self.connection._write_bytes(packet)
 
-                self.connection._read_ok_packet()
         except IOError:
             raise OperationalError(1017, "Can't find file '{}'".format(self.filename))
+        finally:
+            # send the empty packet to signify we are done sending data
+            packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
+            self.connection._write_bytes(packet)
 
+            result = MySQLResult(self.connection)
+            result.read()
+            if result.warning_count > 0:
+                self._print_warnings()
 
 # g:khuno_ignore='E226,E301,E701'

From 470c079638732e02fc6589603dbf00beae189442 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 15:05:33 -0500
Subject: [PATCH 09/20] Add tests for load data local infile

---
 .travis.databases.json                      |     1 +
 pymysql/connections.py                      |     4 +-
 pymysql/tests/__init__.py                   |     1 +
 pymysql/tests/data/load_local_data.txt      | 22749 ++++++++++++++++++
 pymysql/tests/data/load_local_warn_data.txt |    50 +
 pymysql/tests/test_load_local.py            |    75 +
 6 files changed, 22877 insertions(+), 3 deletions(-)
 create mode 100644 pymysql/tests/data/load_local_data.txt
 create mode 100644 pymysql/tests/data/load_local_warn_data.txt
 create mode 100644 pymysql/tests/test_load_local.py

diff --git a/.travis.databases.json b/.travis.databases.json
index 852209e..19b9a0f 100644
--- a/.travis.databases.json
+++ b/.travis.databases.json
@@ -1,4 +1,5 @@
 [
     {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "use_unicode": true},
     {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql2" }
+    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "use_unicode": true, "load_local": true},
 ]
diff --git a/pymysql/connections.py b/pymysql/connections.py
index 776f9f6..97fb8d1 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -458,7 +458,6 @@ class EOFPacketWrapper(object):
         return getattr(self.packet, key)
 
 
-
 class LoadLocalPacketWrapper(object):
     """
     Load Local Packet Wrapper. It uses an existing packet object, and wraps
@@ -480,7 +479,6 @@ class LoadLocalPacketWrapper(object):
         return getattr(self.packet, key)
 
 
-
 class Connection(object):
     """
     Representation of a socket with a mysql server.
@@ -1261,6 +1259,7 @@ class LoadLocalFile(object):
         if not self.connection.socket:
             raise InterfaceError("(0, '')")
 
+        # sequence id is 2 as we already sent a query packet
         seq_id = 2
         try:
             with open(self.filename, 'r') as open_file:
@@ -1268,7 +1267,6 @@ class LoadLocalFile(object):
                 prelude = ""
                 packet = ""
                 packet_size = 0
-                # sequence id is 2 as we already sent a query packet
 
                 for line in open_file:
                     line_length = len(line)
diff --git a/pymysql/tests/__init__.py b/pymysql/tests/__init__.py
index 8006e1a..414e5cc 100644
--- a/pymysql/tests/__init__.py
+++ b/pymysql/tests/__init__.py
@@ -4,6 +4,7 @@ from pymysql.tests.test_nextset import *
 from pymysql.tests.test_DictCursor import *
 from pymysql.tests.test_connection import TestConnection
 from pymysql.tests.test_SSCursor import *
+from pymysql.tests.test_load_local import *
 
 from pymysql.tests.thirdparty import *
 
diff --git a/pymysql/tests/data/load_local_data.txt b/pymysql/tests/data/load_local_data.txt
new file mode 100644
index 0000000..f9f99c8
--- /dev/null
+++ b/pymysql/tests/data/load_local_data.txt
@@ -0,0 +1,22749 @@
+1,2,
+3,4,
+5,6,
+7,8,
+1,2,
+3,4,
+5,6,
+7,8,
+1,2,
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diff --git a/pymysql/tests/data/load_local_warn_data.txt b/pymysql/tests/data/load_local_warn_data.txt
new file mode 100644
index 0000000..2bda5a9
--- /dev/null
+++ b/pymysql/tests/data/load_local_warn_data.txt
@@ -0,0 +1,50 @@
+1,2,
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+,8,
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diff --git a/pymysql/tests/test_load_local.py b/pymysql/tests/test_load_local.py
new file mode 100644
index 0000000..a687cb2
--- /dev/null
+++ b/pymysql/tests/test_load_local.py
@@ -0,0 +1,75 @@
+from pymysql.tests import base
+from pymysql.err import OperationalError
+
+import os
+
+__all__ = ["TestLoadLocal"]
+
+
+class TestLoadLocal(base.PyMySQLTestCase):
+    def test_no_file(self):
+        """Test load local infile when the file does not exist"""
+        conn = self.connections[2]
+        c = conn.cursor()
+        c.execute("CREATE TABLE test_load_local (a INTEGER, b INTEGER)")
+        try:
+            with self.assertRaisesRegexp(
+                    OperationalError, "Can't find file 'no_data.txt'"):
+                c.execute(
+                    "LOAD DATA LOCAL INFILE 'no_data.txt' INTO TABLE " +
+                    "test_load_local fields terminated by ','"
+                )
+        finally:
+            c.execute("DROP TABLE test_load_local")
+            c.close()
+
+    def test_load_file(self):
+        """Test load local infile with a valid file"""
+        conn = self.connections[2]
+        c = conn.cursor()
+        c.execute("CREATE TABLE test_load_local (a INTEGER, b INTEGER)")
+        filename = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                                'data',
+                                'load_local_data.txt')
+        try:
+            c.execute(
+                ("LOAD DATA LOCAL INFILE '{}' INTO TABLE " +
+                 "test_load_local FIELDS TERMINATED BY ','").format(filename)
+            )
+            c.execute("SELECT COUNT(*) FROM test_load_local")
+            self.assertEquals(22749, c.fetchone()[0])
+        finally:
+            c.execute("DROP TABLE test_load_local")
+
+    def test_load_warnings(self):
+        """Test load local infile produces the appropriate warnings"""
+        import sys
+        from StringIO import StringIO
+
+        saved_stdout = sys.stdout
+        out = StringIO()
+        sys.stdout = out
+        conn = self.connections[2]
+        c = conn.cursor()
+        c.execute("CREATE TABLE test_load_local (a INTEGER, b INTEGER)")
+        filename = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                                'data',
+                                'load_local_warn_data.txt')
+
+        try:
+            c.execute(
+                ("LOAD DATA LOCAL INFILE '{}' INTO TABLE " +
+                 "test_load_local FIELDS TERMINATED BY ','").format(filename)
+            )
+            output = out.getvalue().strip().split('\n')
+            self.assertEquals(2, len(output))
+            self.assertEqual("  Warning: Incorrect integer value: '' for column 'a' at row 8", output[1])
+
+        finally:
+            sys.stdout = saved_stdout
+            c.execute("DROP TABLE test_load_local")
+
+
+if __name__ == "__main__":
+    import unittest
+    unittest.main()

From 2dd018c9324247c4648700719531d022b18751a8 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 15:09:08 -0500
Subject: [PATCH 10/20] Fix connection entry for load local tests

---
 .travis.databases.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.databases.json b/.travis.databases.json
index 19b9a0f..5e2559e 100644
--- a/.travis.databases.json
+++ b/.travis.databases.json
@@ -1,5 +1,5 @@
 [
     {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "use_unicode": true},
-    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql2" }
-    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "use_unicode": true, "load_local": true},
+    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql2" },
+    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "load_local": true}
 ]

From 7521ce10e0db5b36d6b0574a12965fb594779d3f Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 15:48:51 -0500
Subject: [PATCH 11/20] Use MySQLResult when printing warnings for load lcoal

---
 pymysql/connections.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 97fb8d1..313da74 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1246,12 +1246,12 @@ class LoadLocalFile(object):
 
     def _print_warnings(self):
         self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
-        self.connection._read_query_result()
-        warnings = self.connection._result.rows
-        if warnings:
+        warnings = MySQLResult(self.connection)
+        warnings.read()
+        if warnings.rows:
             warning_source = list(traceback.extract_stack())[0]
             print("{}:{}: {}".format(warning_source[0], warning_source[1], warning_source[3]))
-            for warning in warnings:
+            for warning in warnings.rows:
                 print("  Warning: {}".format(warning[2]))
 
     def send_data(self):

From 64553bbe4978281f4b71b88ba414b8ccc2ed9b1b Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 16:01:42 -0500
Subject: [PATCH 12/20] Add file information to warnings

---
 pymysql/connections.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 313da74..ab45d71 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1249,10 +1249,10 @@ class LoadLocalFile(object):
         warnings = MySQLResult(self.connection)
         warnings.read()
         if warnings.rows:
-            warning_source = list(traceback.extract_stack())[0]
+            warning_source = traceback.extract_stack()[0]
             print("{}:{}: {}".format(warning_source[0], warning_source[1], warning_source[3]))
             for warning in warnings.rows:
-                print("  Warning: {}".format(warning[2]))
+                print("  Warning: {} in file '{}'".format(warning[2], self.filename))
 
     def send_data(self):
         """Send data packets from the local file to the server"""

From 021109c77c02c6afa47d600b93857d098b674555 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Wed, 7 Jan 2015 16:10:44 -0500
Subject: [PATCH 13/20] Update tests for load data local infile

---
 pymysql/tests/test_load_local.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pymysql/tests/test_load_local.py b/pymysql/tests/test_load_local.py
index a687cb2..aa59add 100644
--- a/pymysql/tests/test_load_local.py
+++ b/pymysql/tests/test_load_local.py
@@ -63,7 +63,11 @@ class TestLoadLocal(base.PyMySQLTestCase):
             )
             output = out.getvalue().strip().split('\n')
             self.assertEquals(2, len(output))
-            self.assertEqual("  Warning: Incorrect integer value: '' for column 'a' at row 8", output[1])
+            self.assertEqual(
+                ("  Warning: Incorrect integer value: '' for column 'a' at " +
+                 "row 8 in file '{}'").format(filename),
+                output[1]
+            )
 
         finally:
             sys.stdout = saved_stdout

From afbb0645013a2cac0f655b53e51985fbbc49807b Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Thu, 8 Jan 2015 10:25:51 -0500
Subject: [PATCH 14/20] Update to work better with different versions

---
 pymysql/connections.py           | 21 +++++++++++----------
 pymysql/tests/test_load_local.py | 31 ++++++++++++++++++-------------
 2 files changed, 29 insertions(+), 23 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index ab45d71..5808675 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -11,10 +11,10 @@ from functools import partial
 import hashlib
 import io
 import os
+import re
 import socket
 import struct
 import sys
-import re
 import traceback
 
 try:
@@ -916,15 +916,15 @@ class Connection(object):
         if self._result is not None and self._result.unbuffered_active:
             self._result._finish_unbuffered_query()
 
-        local_file_name = re.search('load data local infile \'(?P<file_name>[^\']+)\'', sql, flags=re.IGNORECASE)
+        if isinstance(sql, text_type):
+            sql = sql.encode(self.encoding)
+
+        local_file_name = re.search(b'load data local infile \'(?P<file_name>[^\']+)\'', sql, flags=re.IGNORECASE)
         if local_file_name:
             self.local_file = local_file_name.groupdict().get('file_name')
         else:
             self.local_file = None
 
-        if isinstance(sql, text_type):
-            sql = sql.encode(self.encoding)
-
         chunk_size = min(MAX_PACKET_LEN, len(sql) + 1)  # +1 is for command
 
         prelude = struct.pack('<i', chunk_size) + int2byte(command)
@@ -1250,9 +1250,9 @@ class LoadLocalFile(object):
         warnings.read()
         if warnings.rows:
             warning_source = traceback.extract_stack()[0]
-            print("{}:{}: {}".format(warning_source[0], warning_source[1], warning_source[3]))
+            print("{0}:{1}: {2}".format(str(warning_source[0]), str(warning_source[1]), str(warning_source[3])))
             for warning in warnings.rows:
-                print("  Warning: {} in file '{}'".format(warning[2], self.filename))
+                print("  Warning: {0} in file '{1}'".format(warning[2], self.filename.decode('utf-8')))
 
     def send_data(self):
         """Send data packets from the local file to the server"""
@@ -1264,13 +1264,14 @@ class LoadLocalFile(object):
         try:
             with open(self.filename, 'r') as open_file:
                 chunk_size = MAX_PACKET_LEN
-                prelude = ""
-                packet = ""
+                prelude = b""
+                packet = b""
                 packet_size = 0
 
                 for line in open_file:
                     line_length = len(line)
                     format_str = '!{0}s'.format(line_length)
+                    format_str = format_str.encode(self.connection.encoding)
                     line = line.encode(self.connection.encoding)
                     if packet_size + len(line) < chunk_size:
                         packet += struct.pack(format_str, line)
@@ -1292,7 +1293,7 @@ class LoadLocalFile(object):
                 seq_id += 1
 
         except IOError:
-            raise OperationalError(1017, "Can't find file '{}'".format(self.filename))
+            raise OperationalError(1017, "Can't find file '{0}'".format(self.filename))
         finally:
             # send the empty packet to signify we are done sending data
             packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
diff --git a/pymysql/tests/test_load_local.py b/pymysql/tests/test_load_local.py
index aa59add..79db81c 100644
--- a/pymysql/tests/test_load_local.py
+++ b/pymysql/tests/test_load_local.py
@@ -1,5 +1,5 @@
-from pymysql.tests import base
 from pymysql.err import OperationalError
+from pymysql.tests import base
 
 import os
 
@@ -13,12 +13,12 @@ class TestLoadLocal(base.PyMySQLTestCase):
         c = conn.cursor()
         c.execute("CREATE TABLE test_load_local (a INTEGER, b INTEGER)")
         try:
-            with self.assertRaisesRegexp(
-                    OperationalError, "Can't find file 'no_data.txt'"):
-                c.execute(
-                    "LOAD DATA LOCAL INFILE 'no_data.txt' INTO TABLE " +
-                    "test_load_local fields terminated by ','"
-                )
+            self.assertRaises(
+                OperationalError,
+                c.execute,
+                ("LOAD DATA LOCAL INFILE 'no_data.txt' INTO TABLE "
+                 "test_load_local fields terminated by ','")
+            )
         finally:
             c.execute("DROP TABLE test_load_local")
             c.close()
@@ -33,18 +33,23 @@ class TestLoadLocal(base.PyMySQLTestCase):
                                 'load_local_data.txt')
         try:
             c.execute(
-                ("LOAD DATA LOCAL INFILE '{}' INTO TABLE " +
+                ("LOAD DATA LOCAL INFILE '{0}' INTO TABLE " +
                  "test_load_local FIELDS TERMINATED BY ','").format(filename)
             )
             c.execute("SELECT COUNT(*) FROM test_load_local")
-            self.assertEquals(22749, c.fetchone()[0])
+            self.assertEqual(22749, c.fetchone()[0])
         finally:
             c.execute("DROP TABLE test_load_local")
 
     def test_load_warnings(self):
         """Test load local infile produces the appropriate warnings"""
         import sys
-        from StringIO import StringIO
+
+        _py_version = sys.version_info[:2]
+        if _py_version == (2,6) or _py_version == (2,7):
+            from StringIO import StringIO
+        else:
+            from io import StringIO
 
         saved_stdout = sys.stdout
         out = StringIO()
@@ -58,14 +63,14 @@ class TestLoadLocal(base.PyMySQLTestCase):
 
         try:
             c.execute(
-                ("LOAD DATA LOCAL INFILE '{}' INTO TABLE " +
+                ("LOAD DATA LOCAL INFILE '{0}' INTO TABLE " +
                  "test_load_local FIELDS TERMINATED BY ','").format(filename)
             )
             output = out.getvalue().strip().split('\n')
-            self.assertEquals(2, len(output))
+            self.assertEqual(2, len(output))
             self.assertEqual(
                 ("  Warning: Incorrect integer value: '' for column 'a' at " +
-                 "row 8 in file '{}'").format(filename),
+                 "row 8 in file '{0}'").format(filename),
                 output[1]
             )
 

From 5eca5981a70080f43b4b93b35dda480584757080 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 09:24:50 -0500
Subject: [PATCH 15/20] Rename load_local flag to local_infile.

---
 .travis.databases.json | 2 +-
 pymysql/connections.py | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/.travis.databases.json b/.travis.databases.json
index 5e2559e..b700531 100644
--- a/.travis.databases.json
+++ b/.travis.databases.json
@@ -1,5 +1,5 @@
 [
     {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "use_unicode": true},
     {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql2" },
-    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "load_local": true}
+    {"host": "localhost", "user": "root", "passwd": "", "db": "test_pymysql",  "local_infile": true}
 ]
diff --git a/pymysql/connections.py b/pymysql/connections.py
index 5808675..0a22b6d 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -497,7 +497,7 @@ class Connection(object):
                  client_flag=0, cursorclass=Cursor, init_command=None,
                  connect_timeout=None, ssl=None, read_default_group=None,
                  compress=None, named_pipe=None, no_delay=False,
-                 autocommit=False, db=None, passwd=None, load_local=False):
+                 autocommit=False, db=None, passwd=None, local_infile=False):
         """
         Establish a connection to the MySQL database. Accepts several
         arguments:
@@ -530,6 +530,7 @@ class Connection(object):
         named_pipe: Not supported
         no_delay: Disable Nagle's algorithm on the socket
         autocommit: Autocommit mode. None means use server default. (default: False)
+        local_infile: Boolean to enable the use of LOAD DATA LOCAL command. (default: False)
 
         db: Alias for database. (for compatibility to MySQLdb)
         passwd: Alias for password. (for compatibility to MySQLdb)
@@ -546,7 +547,7 @@ class Connection(object):
         if compress or named_pipe:
             raise NotImplementedError("compress and named_pipe arguments are not supported")
 
-        if load_local:
+        if local_infile:
             client_flag |= CLIENT.LOCAL_FILES
             self.local_file = None
 

From 681bf0b7d7a3a4e3966b54bf2131dd8f34553654 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 10:18:52 -0500
Subject: [PATCH 16/20] Remove check for LOAD DATA LOCAL INFILE.

Remove check to see that the filename sent by the server matched the filename
originally sent by the client. Removing at the request of pymysql owner. This
exposes the first security flaw mentioned in
http://dev.mysql.com/doc/refman/5.1/en/load-data-local.html
---
 pymysql/connections.py | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 0a22b6d..7bd7ce2 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -549,7 +549,6 @@ class Connection(object):
 
         if local_infile:
             client_flag |= CLIENT.LOCAL_FILES
-            self.local_file = None
 
         if ssl and ('capath' in ssl or 'cipher' in ssl):
             raise NotImplementedError('ssl options capath and cipher are not supported')
@@ -920,12 +919,6 @@ class Connection(object):
         if isinstance(sql, text_type):
             sql = sql.encode(self.encoding)
 
-        local_file_name = re.search(b'load data local infile \'(?P<file_name>[^\']+)\'', sql, flags=re.IGNORECASE)
-        if local_file_name:
-            self.local_file = local_file_name.groupdict().get('file_name')
-        else:
-            self.local_file = None
-
         chunk_size = min(MAX_PACKET_LEN, len(sql) + 1)  # +1 is for command
 
         prelude = struct.pack('<i', chunk_size) + int2byte(command)
@@ -1140,13 +1133,8 @@ class MySQLResult(object):
 
     def _read_load_local_packet(self, first_packet):
         load_packet = LoadLocalPacketWrapper(first_packet)
-        # ensure the filename returned by the server matches the
-        # file we asked to load in the initial query
-        if self.connection.local_file == load_packet.filename:
-            local_packet = LoadLocalFile(load_packet.filename, self.connection)
-            local_packet.send_data()
-        else:
-            raise OperationalError(2014, "Command Out of Sync")
+        local_packet = LoadLocalFile(load_packet.filename, self.connection)
+        local_packet.send_data()
 
     def _check_packet_is_eof(self, packet):
         if packet.is_eof_packet():

From 2c0d113e914939a2fb57a2f113cce35eb85d9e9d Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 13:30:44 -0500
Subject: [PATCH 17/20] Cleanup send_data for LOAD DATA LOCAL INFILE

---
 pymysql/connections.py | 35 ++++++++++-------------------------
 1 file changed, 10 insertions(+), 25 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 7bd7ce2..58544a7 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1251,36 +1251,21 @@ class LoadLocalFile(object):
         # sequence id is 2 as we already sent a query packet
         seq_id = 2
         try:
-            with open(self.filename, 'r') as open_file:
+            with open(self.filename, 'rb') as open_file:
                 chunk_size = MAX_PACKET_LEN
                 prelude = b""
                 packet = b""
                 packet_size = 0
 
-                for line in open_file:
-                    line_length = len(line)
-                    format_str = '!{0}s'.format(line_length)
-                    format_str = format_str.encode(self.connection.encoding)
-                    line = line.encode(self.connection.encoding)
-                    if packet_size + len(line) < chunk_size:
-                        packet += struct.pack(format_str, line)
-                        packet_size += line_length
-                    else:
-                        # send the existing packet when we have reached the chunk size
-                        prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
-                        packet = prelude + packet
-                        self.connection._write_bytes(packet)
-
-                        seq_id += 1
-                        packet = struct.pack(format_str, line)
-                        packet_size = line_length
-
-                # send the last data packet
-                prelude = struct.pack('<i', packet_size)[:3] + int2byte(seq_id)
-                packet = prelude + packet
-                self.connection._write_bytes(packet)
-                seq_id += 1
-
+                while True:
+                    chunk = open_file.read(chunk_size)
+                    if not chunk:
+                        break
+                    packet = struct.pack('<i', len(chunk))[:3] + int2byte(seq_id)
+                    format_str = '!{0}s'.format(len(chunk))
+                    packet += struct.pack(format_str, chunk)
+                    self.connection._write_bytes(packet)
+                    seq_id += 1
         except IOError:
             raise OperationalError(1017, "Can't find file '{0}'".format(self.filename))
         finally:

From 367fc50f56b5298a641a61e5f0d11013ef1ffde4 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 13:49:10 -0500
Subject: [PATCH 18/20] Refactor handling of result packet for load local.

---
 pymysql/connections.py | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 58544a7..b0b3776 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1086,6 +1086,7 @@ class MySQLResult(object):
         self.rows = None
         self.has_next = None
         self.unbuffered_active = False
+        self.filename = None
 
     def __del__(self):
         if self.unbuffered_active:
@@ -1134,8 +1135,18 @@ class MySQLResult(object):
     def _read_load_local_packet(self, first_packet):
         load_packet = LoadLocalPacketWrapper(first_packet)
         local_packet = LoadLocalFile(load_packet.filename, self.connection)
+        self.filename = load_packet.filename
         local_packet.send_data()
 
+        ok_packet = self.connection._read_packet()
+        if not ok_packet.is_ok_packet():
+            raise OperationalError(2014, "Commands Out of Sync")
+        self._read_ok_packet(ok_packet)
+
+        if self.warning_count > 0:
+            self._print_warnings()
+        self.filename = None
+
     def _check_packet_is_eof(self, packet):
         if packet.is_eof_packet():
             eof_packet = EOFPacketWrapper(packet)
@@ -1144,6 +1155,15 @@ class MySQLResult(object):
             return True
         return False
 
+    def _print_warnings(self):
+        self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
+        self.read()
+        if self.rows:
+            warning_source = traceback.extract_stack()[0]
+            print("{0}:{1}: {2}".format(str(warning_source[0]), str(warning_source[1]), str(warning_source[3])))
+            for warning in self.rows:
+                print("  Warning: {0} in file '{1}'".format(warning[2], self.filename.decode('utf-8')))
+
     def _read_result_packet(self, first_packet):
         self.field_count = first_packet.read_length_encoded_integer()
         self._get_descriptions()
@@ -1233,16 +1253,6 @@ class LoadLocalFile(object):
         self.filename = filename
         self.connection = connection
 
-    def _print_warnings(self):
-        self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
-        warnings = MySQLResult(self.connection)
-        warnings.read()
-        if warnings.rows:
-            warning_source = traceback.extract_stack()[0]
-            print("{0}:{1}: {2}".format(str(warning_source[0]), str(warning_source[1]), str(warning_source[3])))
-            for warning in warnings.rows:
-                print("  Warning: {0} in file '{1}'".format(warning[2], self.filename.decode('utf-8')))
-
     def send_data(self):
         """Send data packets from the local file to the server"""
         if not self.connection.socket:
@@ -1273,9 +1283,4 @@ class LoadLocalFile(object):
             packet = struct.pack('<i', 0)[:3] + int2byte(seq_id)
             self.connection._write_bytes(packet)
 
-            result = MySQLResult(self.connection)
-            result.read()
-            if result.warning_count > 0:
-                self._print_warnings()
-
 # g:khuno_ignore='E226,E301,E701'

From a70a42e3d7ef5a85fd4b1c2588fd7dfd4f4d2790 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 16:00:42 -0500
Subject: [PATCH 19/20] Change print_warnings to use warn instead of print

---
 pymysql/connections.py           |  8 +++++---
 pymysql/tests/test_load_local.py | 34 +++++++++-----------------------
 2 files changed, 14 insertions(+), 28 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index b0b3776..0887c43 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -1156,13 +1156,15 @@ class MySQLResult(object):
         return False
 
     def _print_warnings(self):
+        from warnings import warn
         self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
         self.read()
         if self.rows:
             warning_source = traceback.extract_stack()[0]
-            print("{0}:{1}: {2}".format(str(warning_source[0]), str(warning_source[1]), str(warning_source[3])))
-            for warning in self.rows:
-                print("  Warning: {0} in file '{1}'".format(warning[2], self.filename.decode('utf-8')))
+            message = "\n"
+            for db_warning in self.rows:
+                message += "{0} in file '{1}'\n".format(db_warning[2], self.filename.decode('utf-8'))
+            warn(message, Warning, 3)
 
     def _read_result_packet(self, first_packet):
         self.field_count = first_packet.read_length_encoded_integer()
diff --git a/pymysql/tests/test_load_local.py b/pymysql/tests/test_load_local.py
index 79db81c..5136e70 100644
--- a/pymysql/tests/test_load_local.py
+++ b/pymysql/tests/test_load_local.py
@@ -43,39 +43,23 @@ class TestLoadLocal(base.PyMySQLTestCase):
 
     def test_load_warnings(self):
         """Test load local infile produces the appropriate warnings"""
-        import sys
-
-        _py_version = sys.version_info[:2]
-        if _py_version == (2,6) or _py_version == (2,7):
-            from StringIO import StringIO
-        else:
-            from io import StringIO
-
-        saved_stdout = sys.stdout
-        out = StringIO()
-        sys.stdout = out
+        import warnings
         conn = self.connections[2]
         c = conn.cursor()
         c.execute("CREATE TABLE test_load_local (a INTEGER, b INTEGER)")
         filename = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                                 'data',
                                 'load_local_warn_data.txt')
-
         try:
-            c.execute(
-                ("LOAD DATA LOCAL INFILE '{0}' INTO TABLE " +
-                 "test_load_local FIELDS TERMINATED BY ','").format(filename)
-            )
-            output = out.getvalue().strip().split('\n')
-            self.assertEqual(2, len(output))
-            self.assertEqual(
-                ("  Warning: Incorrect integer value: '' for column 'a' at " +
-                 "row 8 in file '{0}'").format(filename),
-                output[1]
-            )
-
+            with warnings.catch_warnings(record=True) as w:
+                c.execute(
+                    ("LOAD DATA LOCAL INFILE '{0}' INTO TABLE " +
+                     "test_load_local FIELDS TERMINATED BY ','").format(filename)
+                )
+                self.assertEqual(True, "Incorrect integer value" in str(w[-1].message))
+        except Warning as w:
+            self.assertLess(0, str(w).find("Incorrect integer value"))
         finally:
-            sys.stdout = saved_stdout
             c.execute("DROP TABLE test_load_local")
 
 

From d115638d4d2bfdd9a753f15f6370b3c09bf11226 Mon Sep 17 00:00:00 2001
From: Stacey Wrazien <swrazien@shoprunner.com>
Date: Tue, 13 Jan 2015 16:32:09 -0500
Subject: [PATCH 20/20] Remove traceback as it is currently not being used

---
 pymysql/connections.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pymysql/connections.py b/pymysql/connections.py
index 0887c43..2f16e9d 100644
--- a/pymysql/connections.py
+++ b/pymysql/connections.py
@@ -15,7 +15,6 @@ import re
 import socket
 import struct
 import sys
-import traceback
 
 try:
     import ssl
@@ -1160,7 +1159,6 @@ class MySQLResult(object):
         self.connection._execute_command(COMMAND.COM_QUERY, 'SHOW WARNINGS')
         self.read()
         if self.rows:
-            warning_source = traceback.extract_stack()[0]
             message = "\n"
             for db_warning in self.rows:
                 message += "{0} in file '{1}'\n".format(db_warning[2], self.filename.decode('utf-8'))