Voici un exemple de base en utilisant PUT. Il est évident que vous devez utiliser une file d'attente plutôt que d'une requête synchrone dans le réel monde.
Si vous changez les en-têtes de AMZ, ne pas oublier de mettre à jour « » canonicalizedAmzHeaders selon les instructions d'Amazon.
#import "ASIHTTPRequest.h"
#import <CommonCrypto/CommonHMAC.h>
...
- (void)testS3
{
NSString *filePath = @"/path/to/file";
NSString *contentType = @"text/plain";
NSString *bucket = @"mybucket";
NSString *path = @"test";
NSString *secretAccessKey = @"my-secret-access-key";
NSString *accessKey = @"my-access-key";
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss zzzz"];
NSString *date = [dateFormatter stringFromDate:[NSDate date]];
ASIHTTPRequest *request = [[[ASIHTTPRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://%@.s3.amazonaws.com/%@",bucket,path]]] autorelease];
[request setPostBodyFilePath:filePath];
[request setShouldStreamPostDataFromDisk:YES];
[request setRequestMethod:@"PUT"];
[request addRequestHeader:@"x-amz-acl" value:@"private"];
[request addRequestHeader:@"Content-Type" value:contentType];
[request addRequestHeader:@"Date" value:date];
NSString *canonicalizedAmzHeaders = @"x-amz-acl:private";
NSString *canonicalizedResource = [NSString stringWithFormat:@"/%@/%@",bucket,path];
NSString *stringToSign = [NSString stringWithFormat:@"PUT\n\n%@\n%@\n%@\n%@",contentType,date,canonicalizedAmzHeaders,canonicalizedResource];
NSString *signature = [self base64forData:[self HMACSHA1withKey:secretAccessKey forString:stringToSign]];
NSString *auth = [NSString stringWithFormat:@"AWS %@:%@",accessKey,signature];
[request addRequestHeader:@"Authorization" value:auth];
[request start];
NSLog(@"%@",[request responseString]);
}
// Source: http://stackoverflow.com/questions/476455/is-there-a-library-for-iphone-to-work-with-hmac-sha-1-encoding
- (NSData *)HMACSHA1withKey:(NSString *)key forString:(NSString *)string
{
NSData *clearTextData = [string dataUsingEncoding:NSUTF8StringEncoding];
NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
uint8_t digest[CC_SHA1_DIGEST_LENGTH] = {0};
CCHmacContext hmacContext;
CCHmacInit(&hmacContext, kCCHmacAlgSHA1, keyData.bytes, keyData.length);
CCHmacUpdate(&hmacContext, clearTextData.bytes, clearTextData.length);
CCHmacFinal(&hmacContext, digest);
return [NSData dataWithBytes:digest length:CC_SHA1_DIGEST_LENGTH];
}
//Source http://www.cocoadev.com/index.pl?BaseSixtyFour
- (NSString *)base64forData:(NSData *)data
{
static const char encodingTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz/";
if ([data length] == 0)
return @"";
char *characters = malloc((([data length] + 2)/3) * 4);
if (characters == NULL)
return nil;
NSUInteger length = 0;
NSUInteger i = 0;
while (i < [data length])
{
char buffer[3] = {0,0,0};
short bufferLength = 0;
while (bufferLength < 3 && i < [data length])
buffer[bufferLength++] = ((char *)[data bytes])[i++];
// Encode the bytes in the buffer to four characters, including padding "=" characters if necessary.
characters[length++] = encodingTable[(buffer[0] & 0xFC) >> 2];
characters[length++] = encodingTable[((buffer[0] & 0x03) << 4) | ((buffer[1] & 0xF0) >> 4)];
if (bufferLength > 1)
characters[length++] = encodingTable[((buffer[1] & 0x0F) << 2) | ((buffer[2] & 0xC0) >> 6)];
else characters[length++] = '=';
if (bufferLength > 2)
characters[length++] = encodingTable[buffer[2] & 0x3F];
else characters[length++] = '=';
}
return [[[NSString alloc] initWithBytesNoCopy:characters length:length encoding:NSASCIIStringEncoding freeWhenDone:YES] autorelease];
}
Hmmmm - assez difficile à aider sans aucun détail au-delà de «ça ne marche pas». Qu'est-ce spécifiquement? Échoue de quelle manière? Code? Qu'avez-vous essayé? – Hunter