kylefang/react-native-code-push
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This commit is contained in:
Geoffrey Goh
2016-02-25 15:49:57 -08:00
parent cda2db13b3
commit 525e1601dd
7 changed files with 165 additions and 117 deletions
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132
ios/CodePush/CodePushUpdateUtils.m
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@@ -3,9 +3,14 @@
@implementation CodePushUpdateUtils
NSString * const ManifestFolderPrefix = @"CodePush";
NSString * const AssetsFolderName = @"assets";
NSString * const BinaryHashKey = @"CodePushBinaryHash";
NSString * const DefaultJsBundleName = @"main.jsbundle";
NSString * const DefaultAssetsFolderName = @"assets";
NSString * const ManifestFolderPrefix = @"CodePush";
// These variables are used to cache the hash of the binary contents in memory.
static NSString *binaryHash = nil;
static BOOL didLoadBinaryHash = false;
+ (void)addContentsOfFolderToManifest:(NSString *)folderPath
pathPrefix:(NSString *)pathPrefix
@@ -34,13 +39,32 @@ NSString * const DefaultAssetsFolderName = @"assets";
}
} else {
NSData *fileContents = [NSData dataWithContentsOfFile:fullFilePath];
NSString *fileContentsHash = [self computeHash:fileContents];
NSString *fileContentsHash = [self computeHashForData:fileContents];
[manifest addObject:[[relativePath stringByAppendingString:@":"] stringByAppendingString:fileContentsHash]];
}
}
}
+ (NSString *)computeHash:(NSData *)inputData
+ (NSString *)computeFinalHashFromManifest:(NSMutableArray *)manifest
error:(NSError **)error
{
NSArray *sortedManifest = [manifest sortedArrayUsingSelector:@selector(compare:)];
NSData *manifestData = [NSJSONSerialization dataWithJSONObject:sortedManifest
options:kNilOptions
error:error];
if (*error) {
return nil;
}
NSString *manifestString = [[NSString alloc] initWithData:manifestData
encoding:NSUTF8StringEncoding];
// The JSON serialization turns path separators into "\/", e.g. "CodePush\/assets\/image.png"
manifestString = [manifestString stringByReplacingOccurrencesOfString:@"\\/"
withString:@"/"];
return [self computeHashForData:[NSData dataWithBytes:manifestString.UTF8String length:manifestString.length]];
}
+ (NSString *)computeHashForData:(NSData *)inputData
{
uint8_t digest[CC_SHA256_DIGEST_LENGTH];
CC_SHA256(inputData.bytes, inputData.length, digest);
@@ -131,9 +155,9 @@ NSString * const DefaultAssetsFolderName = @"assets";
return nil;
}
+ (NSString *)getDefaultAssetsFolderName
+ (NSString *)getAssetsFolderName
{
return DefaultAssetsFolderName;
return AssetsFolderName;
}
+ (NSString *)getDefaultJsBundleName
@@ -144,35 +168,50 @@ NSString * const DefaultAssetsFolderName = @"assets";
+ (NSString *)getHashForBinaryContents:(NSURL *)binaryBundleUrl
error:(NSError **)error
{
NSString *assetsPath = [CodePushPackage getBinaryAssetsPath];
NSMutableArray *manifest = [NSMutableArray array];
[self addContentsOfFolderToManifest:assetsPath
pathPrefix:[NSString stringWithFormat:@"%@/%@", [self getManifestFolderPrefix], @"assets"]
manifest:manifest
error:error];
if (*error) {
return nil;
if (!didLoadBinaryHash) {
didLoadBinaryHash = true;
// Get the cached hash from user preferences if it exists.
NSString *binaryModifiedDate = [self modifiedDateStringOfFileAtURL:binaryBundleUrl];
NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
NSMutableDictionary *binaryHashDictionary = [preferences objectForKey:BinaryHashKey];
if (binaryHashDictionary != nil) {
binaryHash = [binaryHashDictionary objectForKey:binaryModifiedDate];
if (binaryHash == nil) {
[preferences removeObjectForKey:BinaryHashKey];
[preferences synchronize];
} else {
return binaryHash;
}
}
binaryHashDictionary = [NSMutableDictionary dictionary];
NSString *assetsPath = [CodePushPackage getBinaryAssetsPath];
NSMutableArray *manifest = [NSMutableArray array];
[self addContentsOfFolderToManifest:assetsPath
pathPrefix:[NSString stringWithFormat:@"%@/%@", [self getManifestFolderPrefix], @"assets"]
manifest:manifest
error:error];
if (*error) {
return nil;
}
NSData *jsBundleContents = [NSData dataWithContentsOfURL:binaryBundleUrl];
NSString *jsBundleContentsHash = [self computeHashForData:jsBundleContents];
[manifest addObject:[[NSString stringWithFormat:@"%@/%@", [self getManifestFolderPrefix], [self getDefaultJsBundleName]] stringByAppendingString:jsBundleContentsHash]];
binaryHash = [self computeFinalHashFromManifest:manifest error:error];
// Cache the hash in user preferences. This assumes that the modified date for the
// JS bundle changes every time a new bundle is generated by the packager.
[binaryHashDictionary setObject:binaryHash forKey:binaryModifiedDate];
[preferences setObject:binaryHashDictionary forKey:BinaryHashKey];
[preferences synchronize];
return binaryHash;
}
NSData *jsBundleContents = [NSData dataWithContentsOfURL:binaryBundleUrl];
NSString *jsBundleContentsHash = [self computeHash:jsBundleContents];
[manifest addObject:[[NSString stringWithFormat:@"%@/%@", [self getManifestFolderPrefix], [self getDefaultJsBundleName]] stringByAppendingString:jsBundleContentsHash]];
NSArray *sortedManifest = [manifest sortedArrayUsingSelector:@selector(compare:)];
NSData *manifestData = [NSJSONSerialization dataWithJSONObject:sortedManifest
options:kNilOptions
error:error];
if (*error) {
return nil;
}
NSString *manifestString = [[NSString alloc] initWithData:manifestData
encoding:NSUTF8StringEncoding];
// The JSON serialization turns path separators into "\/", e.g. "CodePush\/assets\/image.png"
manifestString = [manifestString stringByReplacingOccurrencesOfString:@"\\/"
withString:@"/"];
NSString *manifestHash = [self computeHash:[NSData dataWithBytes:manifestString.UTF8String length:manifestString.length]];
return manifestHash;
// Use the cached hash in memory.
return binaryHash;
}
+ (NSString *)getManifestFolderPrefix
@@ -180,6 +219,17 @@ NSString * const DefaultAssetsFolderName = @"assets";
return ManifestFolderPrefix;
}
+ (NSString *)modifiedDateStringOfFileAtURL:(NSURL *)fileURL
{
if (fileURL != nil) {
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[fileURL path] error:nil];
NSDate *modifiedDate = [fileAttributes objectForKey:NSFileModificationDate];
return [NSString stringWithFormat:@"%f", [modifiedDate timeIntervalSince1970]];
} else {
return nil;
}
}
+ (BOOL)verifyHashForDiffUpdate:(NSString *)finalUpdateFolder
expectedHash:(NSString *)expectedHash
error:(NSError **)error
@@ -193,20 +243,12 @@ NSString * const DefaultAssetsFolderName = @"assets";
return NO;
}
NSArray *sortedUpdateContentsManifest = [updateContentsManifest sortedArrayUsingSelector:@selector(compare:)];
NSData *updateContentsManifestData = [NSJSONSerialization dataWithJSONObject:sortedUpdateContentsManifest
options:kNilOptions
error:error];
if (*error) {
NSString *updateContentsManifestHash = [self computeFinalHashFromManifest:updateContentsManifest
error:error];
if (*error || updateContentsManifestHash == nil) {
return NO;
}
NSString *updateContentsManifestString = [[NSString alloc] initWithData:updateContentsManifestData
encoding:NSUTF8StringEncoding];
// The JSON serialization turns path separators into "\/", e.g. "CodePush\/assets\/image.png"
updateContentsManifestString = [updateContentsManifestString stringByReplacingOccurrencesOfString:@"\\/"
withString:@"/"];
NSString *updateContentsManifestHash = [self computeHash:[NSData dataWithBytes:updateContentsManifestString.UTF8String length:updateContentsManifestString.length]];
return [updateContentsManifestHash isEqualToString:expectedHash];
}