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Handle base64 encoded query strings, popular on Windows devices

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This commit is contained in:
Ludovic Marcotte
2014-10-16 09:35:15 -04:00
parent 231987242b
commit fb95d84a3a
1 changed files with 44 additions and 2 deletions
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46
ActiveSync/NSString+ActiveSync.m
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@@ -35,9 +35,13 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <Foundation/NSDate.h>
#include <SOGo/NSString+Utilities.h>
#include <SOGo/NSData+Crypto.h>
#include <NGExtensions/NGBase64Coding.h>
#include <NGExtensions/NSString+misc.h>
static NSArray *easCommandCodes = nil;
@implementation NSString (ActiveSync)
- (NSString *) sanitizedServerIdWithType: (SOGoMicrosoftActiveSyncFolderType) folderType
@@ -134,11 +138,49 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- (NSString *) _valueForParameter: (NSString *) theParameter
{
NSArray *components;
NSMutableArray *components;
NSString *s;
int i;
components = [[[self componentsSeparatedByString: @"?"] lastObject] componentsSeparatedByString: @"&"];
components = [NSMutableArray arrayWithArray: [[[self componentsSeparatedByString: @"?"] lastObject] componentsSeparatedByString: @"&"]];
// We handle BASE64 encoded queryStrings. See http://msdn.microsoft.com/en-us/library/ee160227%28v=exchg.80%29.aspx for details.
if ([components count] == 1)
{
NSString *deviceType;
NSData *queryString;
int cmd_code, deviceid_length, policy_length, devicetype_length;
const char* qs_bytes;
queryString = [[components objectAtIndex: 0] dataByDecodingBase64];
qs_bytes = (const char*)[queryString bytes];
if (!easCommandCodes)
{
easCommandCodes = [NSArray arrayWithObjects:@"Sync", @"SendMail", @"SmartForward", @"SmartReply", @"GetAttachment", @"na", @"na", @"na", @"na",
@"FolderSync", @"FolderCreate", @"FolderDelete", @"FolderUpdate", @"MoveItems", @"GetItemEstimate", @"MeetingResponse",
@"Search", @"Settings", @"Ping", @"ItemOperations", @"Provision", @"ResolveRecipients", @"ValidateCert", nil];
RETAIN(easCommandCodes);
}
// Command code, 1 byte, ie.: cmd=
cmd_code = qs_bytes[1];
[components addObject:[NSString stringWithFormat: @"cmd=%@", [easCommandCodes objectAtIndex: cmd_code]]];
// Device ID length and Device ID (variable)
deviceid_length = qs_bytes[4];
[components addObject:[NSString stringWithFormat: @"deviceId=%@", [[NSData encodeDataAsHexString:[queryString subdataWithRange:NSMakeRange(5, deviceid_length)]] uppercaseString]]];
// Device type length and type (variable)
policy_length = qs_bytes[5+deviceid_length];
devicetype_length = qs_bytes[5+deviceid_length+1+policy_length];
deviceType = [[NSString alloc] initWithData:[queryString subdataWithRange: NSMakeRange(5+deviceid_length+1+policy_length+1, devicetype_length)]
encoding:NSASCIIStringEncoding];
AUTORELEASE(deviceType);
[components addObject:[NSString stringWithFormat: @"deviceType=%@", deviceType]];
}
for (i = 0; i < [components count]; i++)
{