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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/react-native/React/Base
Просмотр файла: RCTJavaScriptLoader.mm
/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTJavaScriptLoader.h"
#import <sys/stat.h>
#import <cxxreact/JSBundleType.h>
#import "RCTBridge.h"
#import "RCTConvert.h"
#import "RCTMultipartDataTask.h"
#import "RCTPerformanceLogger.h"
#import "RCTUtils.h"
NSString *const RCTJavaScriptLoaderErrorDomain = @"RCTJavaScriptLoaderErrorDomain";
@interface RCTSource () {
@public
NSURL *_url;
NSData *_data;
NSUInteger _length;
NSInteger _filesChangedCount;
}
@end
@implementation RCTSource
static RCTSource *RCTSourceCreate(NSURL *url, NSData *data, int64_t length) NS_RETURNS_RETAINED
{
using facebook::react::ScriptTag;
facebook::react::BundleHeader header;
[data getBytes:&header length:sizeof(header)];
RCTSource *source = [RCTSource new];
source->_url = url;
source->_data = data;
source->_length = length;
source->_filesChangedCount = RCTSourceFilesChangedCountNotBuiltByBundler;
return source;
}
@end
@implementation RCTLoadingProgress
- (NSString *)description
{
NSMutableString *desc = [NSMutableString new];
[desc appendString:_status ?: @"Bundling"];
if ([_total integerValue] > 0 && [_done integerValue] > [_total integerValue]) {
[desc appendFormat:@" %ld%%", (long)100];
} else if ([_total integerValue] > 0) {
[desc appendFormat:@" %ld%%", (long)(100 * [_done integerValue] / [_total integerValue])];
} else {
[desc appendFormat:@" %ld%%", (long)0];
}
[desc appendString:@"\u2026"];
return desc;
}
@end
@implementation RCTJavaScriptLoader
RCT_NOT_IMPLEMENTED(-(instancetype)init)
+ (void)loadBundleAtURL:(NSURL *)scriptURL
onProgress:(RCTSourceLoadProgressBlock)onProgress
onComplete:(RCTSourceLoadBlock)onComplete
{
int64_t sourceLength;
NSError *error;
NSData *data = [self attemptSynchronousLoadOfBundleAtURL:scriptURL sourceLength:&sourceLength error:&error];
if (data) {
onComplete(nil, RCTSourceCreate(scriptURL, data, sourceLength));
return;
}
const BOOL isCannotLoadSyncError = [error.domain isEqualToString:RCTJavaScriptLoaderErrorDomain] &&
error.code == RCTJavaScriptLoaderErrorCannotBeLoadedSynchronously;
if (isCannotLoadSyncError) {
attemptAsynchronousLoadOfBundleAtURL(scriptURL, onProgress, onComplete);
} else {
onComplete(error, nil);
}
}
+ (NSData *)attemptSynchronousLoadOfBundleAtURL:(NSURL *)scriptURL
sourceLength:(int64_t *)sourceLength
error:(NSError **)error
{
NSString *unsanitizedScriptURLString = scriptURL.absoluteString;
// Sanitize the script URL
scriptURL = sanitizeURL(scriptURL);
if (!scriptURL) {
if (error) {
*error = [NSError
errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorNoScriptURL
userInfo:@{
NSLocalizedDescriptionKey : [NSString
stringWithFormat:@"No script URL provided. Make sure the packager is "
@"running or you have embedded a JS bundle in your application bundle.\n\n"
@"unsanitizedScriptURLString = %@",
unsanitizedScriptURLString]
}];
}
return nil;
}
// Load local script file
if (!scriptURL.fileURL) {
if (error) {
*error = [NSError errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorCannotBeLoadedSynchronously
userInfo:@{
NSLocalizedDescriptionKey :
[NSString stringWithFormat:@"Cannot load %@ URLs synchronously", scriptURL.scheme]
}];
}
return nil;
}
// Load the first 4 bytes to check if the bundle is regular or RAM ("Random Access Modules" bundle).
// The RAM bundle has a magic number in the 4 first bytes `(0xFB0BD1E5)`.
// The benefit of RAM bundle over a regular bundle is that we can lazily inject
// modules into JSC as they're required.
FILE *bundle = fopen(scriptURL.path.UTF8String, "r");
if (!bundle) {
if (error) {
*error = [NSError
errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorFailedOpeningFile
userInfo:@{
NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Error opening bundle %@", scriptURL.path]
}];
}
return nil;
}
facebook::react::BundleHeader header;
size_t readResult = fread(&header, sizeof(header), 1, bundle);
fclose(bundle);
if (readResult != 1) {
if (error) {
*error = [NSError
errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorFailedReadingFile
userInfo:@{
NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Error reading bundle %@", scriptURL.path]
}];
}
return nil;
}
facebook::react::ScriptTag tag = facebook::react::parseTypeFromHeader(header);
switch (tag) {
case facebook::react::ScriptTag::RAMBundle:
break;
case facebook::react::ScriptTag::String: {
#if RCT_ENABLE_INSPECTOR
NSData *source = [NSData dataWithContentsOfFile:scriptURL.path options:NSDataReadingMappedIfSafe error:error];
if (sourceLength && source != nil) {
*sourceLength = source.length;
}
return source;
#else
if (error) {
*error =
[NSError errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorCannotBeLoadedSynchronously
userInfo:@{NSLocalizedDescriptionKey : @"Cannot load text/javascript files synchronously"}];
}
return nil;
#endif
}
}
struct stat statInfo;
if (stat(scriptURL.path.UTF8String, &statInfo) != 0) {
if (error) {
*error = [NSError
errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorFailedStatingFile
userInfo:@{
NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Error stating bundle %@", scriptURL.path]
}];
}
return nil;
}
if (sourceLength) {
*sourceLength = statInfo.st_size;
}
return [NSData dataWithBytes:&header length:sizeof(header)];
}
static void parseHeaders(NSDictionary *headers, RCTSource *source)
{
source->_filesChangedCount = [headers[@"X-Metro-Files-Changed-Count"] integerValue];
}
static void attemptAsynchronousLoadOfBundleAtURL(
NSURL *scriptURL,
RCTSourceLoadProgressBlock onProgress,
RCTSourceLoadBlock onComplete)
{
scriptURL = sanitizeURL(scriptURL);
if (scriptURL.fileURL) {
// Reading in a large bundle can be slow. Dispatch to the background queue to do it.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSError *error = nil;
NSData *source = [NSData dataWithContentsOfFile:scriptURL.path options:NSDataReadingMappedIfSafe error:&error];
onComplete(error, RCTSourceCreate(scriptURL, source, source.length));
});
return;
}
RCTMultipartDataTask *task = [[RCTMultipartDataTask alloc] initWithURL:scriptURL
partHandler:^(NSInteger statusCode, NSDictionary *headers, NSData *data, NSError *error, BOOL done) {
if (!done) {
if (onProgress) {
onProgress(progressEventFromData(data));
}
return;
}
// Handle general request errors
if (error) {
if ([error.domain isEqualToString:NSURLErrorDomain]) {
error = [NSError
errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorURLLoadFailed
userInfo:@{
NSLocalizedDescriptionKey :
[@"Could not connect to development server.\n\n"
"Ensure the following:\n"
"- Node server is running and available on the same network - run 'npm start' from react-native root\n"
"- Node server URL is correctly set in AppDelegate\n"
"- WiFi is enabled and connected to the same network as the Node Server\n\n"
"URL: " stringByAppendingString:scriptURL.absoluteString],
NSLocalizedFailureReasonErrorKey : error.localizedDescription,
NSUnderlyingErrorKey : error,
}];
}
onComplete(error, nil);
return;
}
// For multipart responses packager sets X-Http-Status header in case HTTP status code
// is different from 200 OK
NSString *statusCodeHeader = headers[@"X-Http-Status"];
if (statusCodeHeader) {
statusCode = [statusCodeHeader integerValue];
}
if (statusCode != 200) {
error =
[NSError errorWithDomain:@"JSServer"
code:statusCode
userInfo:userInfoForRawResponse([[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding])];
onComplete(error, nil);
return;
}
// Validate that the packager actually returned javascript.
NSString *contentType = headers[@"Content-Type"];
NSString *mimeType = [[contentType componentsSeparatedByString:@";"] firstObject];
if (![mimeType isEqualToString:@"application/javascript"] && ![mimeType isEqualToString:@"text/javascript"]) {
NSString *description;
if ([mimeType isEqualToString:@"application/json"]) {
NSError *parseError;
NSDictionary *jsonError = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
if (!parseError && [jsonError isKindOfClass:[NSDictionary class]] &&
[[jsonError objectForKey:@"message"] isKindOfClass:[NSString class]] &&
[[jsonError objectForKey:@"message"] length]) {
description = [jsonError objectForKey:@"message"];
} else {
description = [NSString stringWithFormat:@"Unknown error fetching '%@'.", scriptURL.absoluteString];
}
} else {
description = [NSString
stringWithFormat:
@"Expected MIME-Type to be 'application/javascript' or 'text/javascript', but got '%@'.", mimeType];
}
error = [NSError
errorWithDomain:@"JSServer"
code:NSURLErrorCannotParseResponse
userInfo:@{NSLocalizedDescriptionKey : description, @"headers" : headers, @"data" : data}];
onComplete(error, nil);
return;
}
// Prefer `Content-Location` as the canonical source URL, if given, or fall back to scriptURL.
NSURL *sourceURL = scriptURL;
NSString *contentLocationHeader = headers[@"Content-Location"];
if (contentLocationHeader) {
NSURL *contentLocationURL = [NSURL URLWithString:contentLocationHeader relativeToURL:scriptURL];
if (contentLocationURL) {
sourceURL = contentLocationURL;
}
}
RCTSource *source = RCTSourceCreate(sourceURL, data, data.length);
parseHeaders(headers, source);
onComplete(nil, source);
}
progressHandler:^(NSDictionary *headers, NSNumber *loaded, NSNumber *total) {
NSString *contentType = headers[@"Content-Type"];
NSString *mimeType = [[contentType componentsSeparatedByString:@";"] firstObject];
// Only care about download progress events for the javascript bundle part.
if ([mimeType isEqualToString:@"application/javascript"] ||
[mimeType isEqualToString:@"application/x-metro-bytecode-bundle"]) {
onProgress(progressEventFromDownloadProgress(loaded, total));
}
}];
[task startTask];
}
static NSURL *sanitizeURL(NSURL *url)
{
// Why we do this is lost to time. We probably shouldn't; passing a valid URL is the caller's responsibility not ours.
return [RCTConvert NSURL:url.absoluteString];
}
static RCTLoadingProgress *progressEventFromData(NSData *rawData)
{
NSString *text = [[NSString alloc] initWithData:rawData encoding:NSUTF8StringEncoding];
id info = RCTJSONParse(text, nil);
if (!info || ![info isKindOfClass:[NSDictionary class]]) {
return nil;
}
RCTLoadingProgress *progress = [RCTLoadingProgress new];
progress.status = info[@"status"];
progress.done = info[@"done"];
progress.total = info[@"total"];
return progress;
}
static RCTLoadingProgress *progressEventFromDownloadProgress(NSNumber *total, NSNumber *done)
{
RCTLoadingProgress *progress = [RCTLoadingProgress new];
progress.status = @"Downloading";
// Progress values are in bytes transform them to kilobytes for smaller numbers.
progress.done = done != nil ? @([done integerValue] / 1024) : nil;
progress.total = total != nil ? @([total integerValue] / 1024) : nil;
return progress;
}
static NSDictionary *userInfoForRawResponse(NSString *rawText)
{
NSDictionary *parsedResponse = RCTJSONParse(rawText, nil);
if (![parsedResponse isKindOfClass:[NSDictionary class]]) {
return @{NSLocalizedDescriptionKey : rawText};
}
NSArray *errors = parsedResponse[@"errors"];
if (![errors isKindOfClass:[NSArray class]]) {
return @{NSLocalizedDescriptionKey : rawText};
}
NSMutableArray<NSDictionary *> *fakeStack = [NSMutableArray new];
for (NSDictionary *err in errors) {
[fakeStack addObject:@{
@"methodName" : err[@"description"] ?: @"",
@"file" : err[@"filename"] ?: @"",
@"lineNumber" : err[@"lineNumber"] ?: @0
}];
}
return
@{NSLocalizedDescriptionKey : parsedResponse[@"message"] ?: @"No message provided", @"stack" : [fakeStack copy]};
}
@end
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