Synnefo » Pithos iOS Client

//

//  ASIFormDataRequest.m

//  Part of ASIHTTPRequest -> http://allseeing-i.com/ASIHTTPRequest

//

//  Created by Ben Copsey on 07/11/2008.

//  Copyright 2008-2009 All-Seeing Interactive. All rights reserved.

//

#import "ASIFormDataRequest.h"

// Private stuff

@interface ASIFormDataRequest ()

- (void)buildMultipartFormDataPostBody;

- (void)buildURLEncodedPostBody;

- (void)appendPostString:(NSString *)string;

@property (retain) NSMutableArray *postData;

@property (retain) NSMutableArray *fileData;

#if DEBUG_FORM_DATA_REQUEST

- (void)addToDebugBody:(NSString *)string;

@property (retain, nonatomic) NSString *debugBodyString;

#endif

@end

@implementation ASIFormDataRequest

#pragma mark utilities

- (NSString*)encodeURL:(NSString *)string

{

	NSString *newString = NSMakeCollectable([(NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)string, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"), CFStringConvertNSStringEncodingToEncoding([self stringEncoding])) autorelease]);

	if (newString) {

		return newString;

	}

	return @"";

}

#pragma mark init / dealloc

+ (id)requestWithURL:(NSURL *)newURL

{

	return [[[self alloc] initWithURL:newURL] autorelease];

}

- (id)initWithURL:(NSURL *)newURL

{

	self = [super initWithURL:newURL];

	[self setPostFormat:ASIURLEncodedPostFormat];

	[self setStringEncoding:NSUTF8StringEncoding];

	return self;

}

- (void)dealloc

{

#if DEBUG_FORM_DATA_REQUEST

	[debugBodyString release]; 

#endif

	[postData release];

	[fileData release];

	[super dealloc];

}

#pragma mark setup request

- (void)addPostValue:(id <NSObject>)value forKey:(NSString *)key

{

	if (![self postData]) {

		[self setPostData:[NSMutableArray array]];

	}

	[[self postData] addObject:[NSDictionary dictionaryWithObjectsAndKeys:[value description],@"value",key,@"key",nil]];

}

- (void)setPostValue:(id <NSObject>)value forKey:(NSString *)key

{

	// Remove any existing value

	NSUInteger i;

	for (i=0; i<[[self postData] count]; i++) {

		NSDictionary *val = [[self postData] objectAtIndex:i];

		if ([[val objectForKey:@"key"] isEqualToString:key]) {

			[[self postData] removeObjectAtIndex:i];

			i--;

		}

	}

	[self addPostValue:value forKey:key];

}

- (void)addFile:(NSString *)filePath forKey:(NSString *)key

{

	[self addFile:filePath withFileName:nil andContentType:nil forKey:key];

}

- (void)addFile:(id)data withFileName:(NSString *)fileName andContentType:(NSString *)contentType forKey:(NSString *)key

{

	if (![self fileData]) {

		[self setFileData:[NSMutableArray array]];

	}

	// If data is a path to a local file

	if ([data isKindOfClass:[NSString class]]) {

		BOOL isDirectory = NO;

		BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:(NSString *)data isDirectory:&isDirectory];

		if (!fileExists || isDirectory) {

			[self failWithError:[NSError errorWithDomain:NetworkRequestErrorDomain code:ASIInternalErrorWhileBuildingRequestType userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"No file exists at %@",data],NSLocalizedDescriptionKey,nil]]];

		}

		// If the caller didn't specify a custom file name, we'll use the file name of the file we were passed

		if (!fileName) {

			fileName = [(NSString *)data lastPathComponent];

		}

		// If we were given the path to a file, and the user didn't specify a mime type, we can detect it from the file extension

		if (!contentType) {

			contentType = [ASIHTTPRequest mimeTypeForFileAtPath:data];

		}

	}

	NSDictionary *fileInfo = [NSDictionary dictionaryWithObjectsAndKeys:data, @"data", contentType, @"contentType", fileName, @"fileName", key, @"key", nil];

	[[self fileData] addObject:fileInfo];

}

- (void)setFile:(NSString *)filePath forKey:(NSString *)key

{

	[self setFile:filePath withFileName:nil andContentType:nil forKey:key];

}

- (void)setFile:(id)data withFileName:(NSString *)fileName andContentType:(NSString *)contentType forKey:(NSString *)key

{

	// Remove any existing value

	NSUInteger i;

	for (i=0; i<[[self fileData] count]; i++) {

		NSDictionary *val = [[self fileData] objectAtIndex:i];

		if ([[val objectForKey:@"key"] isEqualToString:key]) {

			[[self fileData] removeObjectAtIndex:i];

			i--;

		}

	}

	[self addFile:data withFileName:fileName andContentType:contentType forKey:key];

}

- (void)addData:(NSData *)data forKey:(NSString *)key

{

	[self addData:data withFileName:@"file" andContentType:nil forKey:key];

}

- (void)addData:(id)data withFileName:(NSString *)fileName andContentType:(NSString *)contentType forKey:(NSString *)key

{

	if (![self fileData]) {

		[self setFileData:[NSMutableArray array]];

	}

	if (!contentType) {

		contentType = @"application/octet-stream";

	}

	NSDictionary *fileInfo = [NSDictionary dictionaryWithObjectsAndKeys:data, @"data", contentType, @"contentType", fileName, @"fileName", key, @"key", nil];

	[[self fileData] addObject:fileInfo];

}

- (void)setData:(NSData *)data forKey:(NSString *)key

{

	[self setData:data withFileName:@"file" andContentType:nil forKey:key];

}

- (void)setData:(id)data withFileName:(NSString *)fileName andContentType:(NSString *)contentType forKey:(NSString *)key

{

	// Remove any existing value

	NSUInteger i;

	for (i=0; i<[[self fileData] count]; i++) {

		NSDictionary *val = [[self fileData] objectAtIndex:i];

		if ([[val objectForKey:@"key"] isEqualToString:key]) {

			[[self fileData] removeObjectAtIndex:i];

			i--;

		}

	}

	[self addData:data withFileName:fileName andContentType:contentType forKey:key];

}

- (void)buildPostBody

{

	if ([self haveBuiltPostBody]) {

		return;

	}

#if DEBUG_FORM_DATA_REQUEST

	[self setDebugBodyString:@""];	

#endif

	if (![self postData] && ![self fileData]) {

		[super buildPostBody];

		return;

	}	

	if ([[self fileData] count] > 0) {

		[self setShouldStreamPostDataFromDisk:YES];

	}

	if ([self postFormat] == ASIURLEncodedPostFormat) {

		[self buildURLEncodedPostBody];

	} else {

		[self buildMultipartFormDataPostBody];

	}

	[super buildPostBody];

#if DEBUG_FORM_DATA_REQUEST

	NSLog(@"%@",[self debugBodyString]);

	[self setDebugBodyString:nil];

#endif

}

- (void)buildMultipartFormDataPostBody

{

#if DEBUG_FORM_DATA_REQUEST

	[self addToDebugBody:@"\r\n==== Building a multipart/form-data body ====\r\n"];

#endif

	NSString *charset = (NSString *)CFStringConvertEncodingToIANACharSetName(CFStringConvertNSStringEncodingToEncoding([self stringEncoding]));

	// Set your own boundary string only if really obsessive. We don't bother to check if post data contains the boundary, since it's pretty unlikely that it does.

	NSString *stringBoundary = @"0xKhTmLbOuNdArY";

	[self addRequestHeader:@"Content-Type" value:[NSString stringWithFormat:@"multipart/form-data; charset=%@; boundary=%@", charset, stringBoundary]];

	[self appendPostString:[NSString stringWithFormat:@"--%@\r\n",stringBoundary]];

	// Adds post data

	NSString *endItemBoundary = [NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary];

	NSUInteger i=0;

	for (NSDictionary *val in [self postData]) {

		[self appendPostString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",[val objectForKey:@"key"]]];

		[self appendPostString:[val objectForKey:@"value"]];

		i++;

		if (i != [[self postData] count] || [[self fileData] count] > 0) { //Only add the boundary if this is not the last item in the post body

			[self appendPostString:endItemBoundary];

		}

	}

	// Adds files to upload

	i=0;

	for (NSDictionary *val in [self fileData]) {

		[self appendPostString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n", [val objectForKey:@"key"], [val objectForKey:@"fileName"]]];

		[self appendPostString:[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n", [val objectForKey:@"contentType"]]];

		id data = [val objectForKey:@"data"];

		if ([data isKindOfClass:[NSString class]]) {

			[self appendPostDataFromFile:data];

		} else {

			[self appendPostData:data];

		}

		i++;

		// Only add the boundary if this is not the last item in the post body

		if (i != [[self fileData] count]) { 

			[self appendPostString:endItemBoundary];

		}

	}

	[self appendPostString:[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary]];

#if DEBUG_FORM_DATA_REQUEST

	[self addToDebugBody:@"==== End of multipart/form-data body ====\r\n"];

#endif

}

- (void)buildURLEncodedPostBody

{

	// We can't post binary data using application/x-www-form-urlencoded

	if ([[self fileData] count] > 0) {

		[self setPostFormat:ASIMultipartFormDataPostFormat];

		[self buildMultipartFormDataPostBody];

		return;

	}

#if DEBUG_FORM_DATA_REQUEST

	[self addToDebugBody:@"\r\n==== Building an application/x-www-form-urlencoded body ====\r\n"]; 

#endif

	NSString *charset = (NSString *)CFStringConvertEncodingToIANACharSetName(CFStringConvertNSStringEncodingToEncoding([self stringEncoding]));

	[self addRequestHeader:@"Content-Type" value:[NSString stringWithFormat:@"application/x-www-form-urlencoded; charset=%@",charset]];

	NSUInteger i=0;

	NSUInteger count = [[self postData] count]-1;

	for (NSDictionary *val in [self postData]) {

        NSString *data = [NSString stringWithFormat:@"%@=%@%@", [self encodeURL:[val objectForKey:@"key"]], [self encodeURL:[val objectForKey:@"value"]],(i<count ?  @"&" : @"")]; 

		[self appendPostString:data];

		i++;

	}

#if DEBUG_FORM_DATA_REQUEST

	[self addToDebugBody:@"\r\n==== End of application/x-www-form-urlencoded body ====\r\n"]; 

#endif

}

- (void)appendPostString:(NSString *)string

{

#if DEBUG_FORM_DATA_REQUEST

	[self addToDebugBody:string];

#endif

	[super appendPostData:[string dataUsingEncoding:[self stringEncoding]]];

}

#if DEBUG_FORM_DATA_REQUEST

- (void)appendPostData:(NSData *)data

{

	[self addToDebugBody:[NSString stringWithFormat:@"[%lu bytes of data]",(unsigned long)[data length]]];

	[super appendPostData:data];

}

- (void)appendPostDataFromFile:(NSString *)file

{

	NSError *err = nil;

	unsigned long long fileSize = [[[[NSFileManager defaultManager] attributesOfItemAtPath:file error:&err] objectForKey:NSFileSize] unsignedLongLongValue];

	if (err) {

		[self addToDebugBody:[NSString stringWithFormat:@"[Error: Failed to obtain the size of the file at '%@']",file]];

	} else {

		[self addToDebugBody:[NSString stringWithFormat:@"[%llu bytes of data from file '%@']",fileSize,file]];

	}

	[super appendPostDataFromFile:file];

}

- (void)addToDebugBody:(NSString *)string

{

	[self setDebugBodyString:[[self debugBodyString] stringByAppendingString:string]];

}

#endif

#pragma mark NSCopying

- (id)copyWithZone:(NSZone *)zone

{

	ASIFormDataRequest *newRequest = [super copyWithZone:zone];

	[newRequest setPostData:[[[self postData] mutableCopyWithZone:zone] autorelease]];

	[newRequest setFileData:[[[self fileData] mutableCopyWithZone:zone] autorelease]];

	[newRequest setPostFormat:[self postFormat]];

	[newRequest setStringEncoding:[self stringEncoding]];

	[newRequest setRequestMethod:[self requestMethod]];

	return newRequest;

}

@synthesize postData;

@synthesize fileData;

@synthesize postFormat;

@synthesize stringEncoding;

#if DEBUG_FORM_DATA_REQUEST

@synthesize debugBodyString;

#endif

@end