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transmission/macosx/PortChecker.mm
Mike Gelfand b7ba261359
Port macOS client to C++ (#1830)
* Rename all .m (Obj-C) files to .mm (Obj-C++)

* Fix build in Obj-C++ mode

* Fix Xcode build
2021-09-24 07:56:57 -05:00

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/******************************************************************************
* Copyright (c) 2006-2012 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#import "PortChecker.h"
#define CHECKER_URL(port) [NSString stringWithFormat:@"https://portcheck.transmissionbt.com/%ld", port]
#define CHECK_FIRE 3.0
@interface PortChecker (Private)
- (void)startProbe:(NSTimer*)timer;
- (void)callBackWithStatus:(port_status_t)status;
@end
@implementation PortChecker
- (instancetype)initForPort:(NSInteger)portNumber delay:(BOOL)delay withDelegate:(id)delegate
{
if ((self = [super init]))
{
fDelegate = delegate;
fStatus = PORT_STATUS_CHECKING;
fTimer = [NSTimer scheduledTimerWithTimeInterval:CHECK_FIRE target:self selector:@selector(startProbe:)
userInfo:@(portNumber)
repeats:NO];
if (!delay)
{
[fTimer fire];
}
}
return self;
}
- (void)dealloc
{
[fTimer invalidate];
}
- (port_status_t)status
{
return fStatus;
}
- (void)cancelProbe
{
[fTimer invalidate];
fTimer = nil;
[fConnection cancel];
}
- (void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response
{
fPortProbeData.length = 0;
}
- (void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
[fPortProbeData appendData:data];
}
- (void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
NSLog(@"Unable to get port status: connection failed (%@)", error.localizedDescription);
[self callBackWithStatus:PORT_STATUS_ERROR];
}
- (void)connectionDidFinishLoading:(NSURLConnection*)connection
{
NSString* probeString = [[NSString alloc] initWithData:fPortProbeData encoding:NSUTF8StringEncoding];
fPortProbeData = nil;
if (probeString)
{
if ([probeString isEqualToString:@"1"])
{
[self callBackWithStatus:PORT_STATUS_OPEN];
}
else if ([probeString isEqualToString:@"0"])
{
[self callBackWithStatus:PORT_STATUS_CLOSED];
}
else
{
NSLog(@"Unable to get port status: invalid response (%@)", probeString);
[self callBackWithStatus:PORT_STATUS_ERROR];
}
}
else
{
NSLog(@"Unable to get port status: invalid data received");
[self callBackWithStatus:PORT_STATUS_ERROR];
}
}
@end
@implementation PortChecker (Private)
- (void)startProbe:(NSTimer*)timer
{
fTimer = nil;
NSURLRequest* portProbeRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:CHECKER_URL([[timer userInfo] integerValue])]
cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
timeoutInterval:15.0];
if ((fConnection = [[NSURLConnection alloc] initWithRequest:portProbeRequest delegate:self]))
{
fPortProbeData = [[NSMutableData alloc] init];
}
else
{
NSLog(@"Unable to get port status: failed to initiate connection");
[self callBackWithStatus:PORT_STATUS_ERROR];
}
}
- (void)callBackWithStatus:(port_status_t)status
{
fStatus = status;
if (fDelegate && [fDelegate respondsToSelector:@selector(portCheckerDidFinishProbing:)])
{
[fDelegate performSelectorOnMainThread:@selector(portCheckerDidFinishProbing:) withObject:self waitUntilDone:NO];
}
}
@end