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FSWHTTPConnection.m
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FSWHTTPConnection.m
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//
// FSWHTTPConnection.m
// FSWalker
//
// Created by Nicolas Seriot on 01.02.09.
// Copyright 2009 Sen:te. All rights reserved.
//
#import "FSWHTTPConnection.h"
#import "HTTPResponse.h"
#import "NSNumber+Bytes.h"
#import "MyIP.h"
@implementation NSString (FSWalker)
- (BOOL)isDirectory {
BOOL isDir = NO;
return [[NSFileManager defaultManager] fileExistsAtPath:self isDirectory:&isDir] && isDir;
}
- (NSString *)lastChange {
NSDictionary *d = [[NSFileManager defaultManager] attributesOfItemAtPath:self error:nil];
NSString *s = [[d objectForKey:NSFileModificationDate] description];
return s ? s : @"-";
}
- (NSString *)prettySize {
if([self isDirectory]) return @"-";
NSDictionary *d = [[NSFileManager defaultManager] attributesOfItemAtPath:self error:nil];
NSNumber *n = [NSNumber numberWithLongLong:[[d objectForKey:NSFileSize] longLongValue]];
NSString *s = [n prettyBytes];
return s ? s : @"-";
}
@end
@implementation FSWHTTPConnection
- (NSString *)myIP {
NSString *myIP = [[[MyIP sharedInstance] ipsForInterfaces] objectForKey:@"en0"];
#if TARGET_IPHONE_SIMULATOR
if(!myIP) {
myIP = [[[MyIP sharedInstance] ipsForInterfaces] objectForKey:@"en1"];
}
#endif
return myIP;
}
/**
* Converts relative URI path into full file-system path.
**/
- (NSString *)filePathForURI:(NSString *)path
{
// Convert path to a relative path.
// This essentially means trimming beginning '/' characters.
// Beware of a bug in the Cocoa framework:
//
// [NSURL URLWithString:@"/foo" relativeToURL:baseURL] == @"/baseURL/foo"
// [NSURL URLWithString:@"/foo%20bar" relativeToURL:baseURL] == @"/foo bar"
// [NSURL URLWithString:@"/foo" relativeToURL:baseURL] == @"/foo"
NSString *relativePath = path;
while([relativePath hasPrefix:@"/"] && [relativePath length] > 1) {
relativePath = [relativePath substringFromIndex:1];
}
NSURL *url = [NSURL URLWithString:relativePath relativeToURL:[NSURL URLWithString:@"/"]];
// Watch out for sneaky requests with ".." in the path
// For example, the following request: "../Documents/TopSecret.doc"
if(![[url path] hasPrefix:@"/"]) return nil;
return [[url path] stringByStandardizingPath];
}
/**
* This method is called to get a response for a request.
* You may return any object that adopts the HTTPResponse protocol.
* The HTTPServer comes with two such classes: HTTPFileResponse and HTTPDataResponse.
* HTTPFileResponse is a wrapper for an NSFileHandle object, and is the preferred way to send a file response.
* HTTPDataResponse is a wrapper for an NSData object, and may be used to send a custom response.
**/
- (NSObject<HTTPResponse> *)httpResponseForMethod:(NSString *)method URI:(NSString *)path
{
// Override me to provide custom responses.
NSString *filePath = [self filePathForURI:path];
BOOL isDir = NO;
if([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDir]) {
if(isDir) {
NSMutableString *html = [[NSMutableString alloc] init];
[html appendString:@"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n"];
[html appendFormat:@"<HTML>\n<HEAD>\n<TITLE>Index of %@</TITLE>\n</HEAD>\n<BODY>\n", filePath];
[html appendFormat:@"<H1>Index of %@</H1>\n<pre>\n", filePath];
NSString *iconFolder = [[NSBundle mainBundle] pathForResource:@"folder" ofType:@"gif"];
NSString *iconGeneric = [[NSBundle mainBundle] pathForResource:@"generic" ofType:@"gif"];
NSString *iconBack = [[NSBundle mainBundle] pathForResource:@"back" ofType:@"gif"];
NSString *iconImage = [[NSBundle mainBundle] pathForResource:@"image2" ofType:@"gif"];
NSString *iconPdf = [[NSBundle mainBundle] pathForResource:@"image2" ofType:@"gif"];
NSString *iconBlank = [[NSBundle mainBundle] pathForResource:@"blank" ofType:@"gif"];
NSString *parentDirPad = [@"Name" stringByPaddingToLength:48 withString:@" " startingAtIndex:0];
NSString *lastChangePad = [@"Last modified" stringByPaddingToLength:28 withString:@" " startingAtIndex:0];
NSString *sizePad = [@"Size" stringByPaddingToLength:28 withString:@" " startingAtIndex:0];
[html appendFormat:@"<img src=\"%@\" /> %@ %@ %@<hr/>", iconBlank, parentDirPad, lastChangePad, sizePad];
[html appendFormat:@"<img src=\"%@\" /> <A HREF=\"%@\">Parent Directory</A>\n", iconBack, [filePath stringByDeletingLastPathComponent]];
NSError *error = nil;
NSArray *a = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:filePath error:&error];
if(!error && a) {
for(NSString *s in a) {
NSString *dest = [filePath stringByAppendingPathComponent:s];
NSString *ext = [[s pathExtension] lowercaseString];
NSString *iconPath = iconGeneric;
if([dest isDirectory]) {
iconPath = iconFolder;
} else if ([[NSArray arrayWithObjects:@"png", @"gif", @"jpg", nil] containsObject:ext]) {
iconPath = iconImage;
} else if ([ext isEqualToString:@"pdf"]) {
iconPath = iconPdf;
}
NSString *lastChange = [[dest lastChange] stringByPaddingToLength:28 withString:@" " startingAtIndex:0];
NSString *prettySize = [[dest prettySize] stringByPaddingToLength:28 withString:@" " startingAtIndex:0];
NSString *pad = @" ";
int padLength = 48-[[s lastPathComponent] length];
if (padLength > 0)
pad = [@"" stringByPaddingToLength:padLength withString:@" " startingAtIndex:0];
[html appendFormat:@"<img src=\"%@\" /> <A HREF=\"%@\">%@</A> %@ %@ %@\n", iconPath, dest, [s lastPathComponent], pad, lastChange, prettySize];
}
}
[html appendFormat:@"<hr /></pre>\n<address>%@/CocoaHTTPServer on %@ %@, at %@ (%@) Port %u</address>\n</BODY>\n</HTML>\n",
[[NSProcessInfo processInfo] processName], [[UIDevice currentDevice] systemName], [[UIDevice currentDevice] systemVersion], [self myIP], [[NSProcessInfo processInfo] hostName], [server port]];
NSData *data = [html dataUsingEncoding:NSUTF8StringEncoding];
[html release];
HTTPDataResponse *r = [[HTTPDataResponse alloc] initWithData:data];
return [r autorelease];
} else {
if([[filePath pathExtension] isEqualToString:@"plist"]) {
id plist = [NSDictionary dictionaryWithContentsOfFile:filePath];
if(!plist) plist = [NSArray arrayWithContentsOfFile:filePath];
if(!plist) return [[[HTTPDataResponse alloc] initWithData:nil] autorelease];
NSString *errorString = nil;
NSData *data = [NSPropertyListSerialization dataFromPropertyList:plist format:kCFPropertyListXMLFormat_v1_0 errorDescription:&errorString];
if(errorString) {
data = [errorString dataUsingEncoding:NSUTF8StringEncoding];
return [[[HTTPDataResponse alloc] initWithData:data] autorelease];
} else {
return [[[HTTPDataResponse alloc] initWithData:data] autorelease]; // FIXME: return HTTP header Content-Type: text/plain
}
}
return [[[HTTPFileResponse alloc] initWithFilePath:filePath] autorelease];
}
}
return nil;
}
@end