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238 lines
11 KiB
Objective-C
238 lines
11 KiB
Objective-C
//
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// QRCodeUtils.m
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// ShadowsocksX-NG
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//
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// Created by 邱宇舟 on 16/6/8.
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// Copyright © 2016年 qiuyuzhou. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <CoreImage/CoreImage.h>
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void ScanQRCodeOnScreen() {
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/* displays[] Quartz display ID's */
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CGDirectDisplayID *displays = nil;
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CGError err = CGDisplayNoErr;
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CGDisplayCount dspCount = 0;
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/* How many active displays do we have? */
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err = CGGetActiveDisplayList(0, NULL, &dspCount);
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/* If we are getting an error here then their won't be much to display. */
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if(err != CGDisplayNoErr)
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{
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NSLog(@"Could not get active display count (%d)\n", err);
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return;
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}
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/* Allocate enough memory to hold all the display IDs we have. */
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displays = calloc((size_t)dspCount, sizeof(CGDirectDisplayID));
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// Get the list of active displays
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err = CGGetActiveDisplayList(dspCount,
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displays,
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&dspCount);
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/* More error-checking here. */
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if(err != CGDisplayNoErr)
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{
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NSLog(@"Could not get active display list (%d)\n", err);
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return;
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}
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NSMutableArray* foundSSUrls = [NSMutableArray array];
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CIDetector *detector = [CIDetector detectorOfType:@"CIDetectorTypeQRCode"
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context:nil
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options:@{ CIDetectorAccuracy:CIDetectorAccuracyHigh }];
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for (unsigned int displaysIndex = 0; displaysIndex < dspCount; displaysIndex++)
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{
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/* Make a snapshot image of the current display. */
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CGImageRef image = CGDisplayCreateImage(displays[displaysIndex]);
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NSArray *features = [detector featuresInImage:[CIImage imageWithCGImage:image]];
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for (CIQRCodeFeature *feature in features) {
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// NSLog(@"%@", feature.messageString);
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if ( [feature.messageString hasPrefix:@"ss://"] )
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{
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[foundSSUrls addObject:[NSURL URLWithString:feature.messageString]];
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}else if ( [feature.messageString hasPrefix:@"ssr://"] ){
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[foundSSUrls addObject:[NSURL URLWithString:feature.messageString]];
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}
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}
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}
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free(displays);
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[[NSNotificationCenter defaultCenter]
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postNotificationName:@"NOTIFY_FOUND_SS_URL"
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object:nil
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userInfo: @{ @"urls": foundSSUrls,
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@"source": @"qrcode"
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}
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];
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}
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// 解析SS URL，如果成功则返回一个与ServerProfile类兼容的dict
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// 或SSR URL，ServerProfile类已经默认添加SSR参数，默认放空，如果URL为SSR://则改变解析方法
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// ss:// + base64(method:password@domain:port)
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NSDictionary<NSString *, id>* ParseSSURL(NSURL* url) {
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if (!url.host) {
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return nil;
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}
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NSString *urlString = [url absoluteString];
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int i = 0;
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NSString *errorReason = nil;
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if([urlString hasPrefix:@"ss://"]){
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while(i < 2) {
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if (i == 1) {
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NSString* host = url.host;
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if ([host length]%4!=0) {
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int n = 4 - [host length]%4;
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if (1==n) {
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host = [host stringByAppendingString:@"="];
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} else if (2==n) {
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host = [host stringByAppendingString:@"=="];
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}
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}
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NSData *data = [[NSData alloc] initWithBase64EncodedString:host options:0];
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NSString *decodedString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
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urlString = decodedString;
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}
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i++;
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urlString = [urlString stringByReplacingOccurrencesOfString:@"ss://" withString:@"" options:NSAnchoredSearch range:NSMakeRange(0, urlString.length)];
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NSRange firstColonRange = [urlString rangeOfString:@":"];
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NSRange lastColonRange = [urlString rangeOfString:@":" options:NSBackwardsSearch];
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NSRange lastAtRange = [urlString rangeOfString:@"@" options:NSBackwardsSearch];
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if (firstColonRange.length == 0) {
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errorReason = @"colon not found";
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continue;
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}
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if (firstColonRange.location == lastColonRange.location) {
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errorReason = @"only one colon";
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continue;
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}
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if (lastAtRange.length == 0) {
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errorReason = @"at not found";
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continue;
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}
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if (!((firstColonRange.location < lastAtRange.location) && (lastAtRange.location < lastColonRange.location))) {
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errorReason = @"wrong position";
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continue;
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}
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NSString *method = [urlString substringWithRange:NSMakeRange(0, firstColonRange.location)];
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NSString *password = [urlString substringWithRange:NSMakeRange(firstColonRange.location + 1, lastAtRange.location - firstColonRange.location - 1)];
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NSString *IP = [urlString substringWithRange:NSMakeRange(lastAtRange.location + 1, lastColonRange.location - lastAtRange.location - 1)];
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NSString *port = [urlString substringWithRange:NSMakeRange(lastColonRange.location + 1, urlString.length - lastColonRange.location - 1)];
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return @{@"ServerHost": IP,
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@"ServerPort": @([port integerValue]),
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@"Method": method,
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@"Password": password,
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};
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}
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}else if ([urlString hasPrefix:@"ssr://"]){
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// ssr:// + base64(abc.xyz:12345:auth_sha1_v2:rc4-md5:tls1.2_ticket_auth:{base64(password)}/?obfsparam={base64(混淆参数(网址))}&remarks={base64(节点名称)})
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urlString = [urlString stringByReplacingOccurrencesOfString:@"ssr://" withString:@"" options:NSAnchoredSearch range:NSMakeRange(0, urlString.length)];
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urlString = [urlString stringByReplacingOccurrencesOfString:@"-" withString:@"+"];
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urlString = [urlString stringByReplacingOccurrencesOfString:@"_" withString:@"/"];
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if ([urlString length]%4!=0) {
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int n = 4 - [urlString length]%4;
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if (1==n) {
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urlString = [urlString stringByAppendingString:@"="];
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} else if (2==n) {
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urlString = [urlString stringByAppendingString:@"=="];
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}
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}
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NSData *data = [[NSData alloc] initWithBase64EncodedString:urlString options:0];
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NSString *decodedString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
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urlString = decodedString;
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if (data == NULL) {
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[[NSNotificationCenter defaultCenter]
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postNotificationName:@"NOTIFY_INVALIDE_QR"
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object:nil
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userInfo: @{ @"urls": @"配置二维码无效!",
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@"source": @"qrcode"
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}
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];
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}else{
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NSRange paramSplit = [decodedString rangeOfString:@"?"];
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NSString *firstParam = [decodedString substringToIndex:paramSplit.location-1];
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NSString *lastParam = [decodedString substringFromIndex:paramSplit.location];
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lastParam = [lastParam substringFromIndex:1];
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NSArray *lastParamArray = [lastParam componentsSeparatedByString:@"&"];
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NSMutableDictionary *parserLastParamDict = [[NSMutableDictionary alloc]init];
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for (int i=0; i<lastParamArray.count; i++) {
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NSString *toSplitString = lastParamArray[i];
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NSRange lastParamSplit = [toSplitString rangeOfString:@"="];
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if (lastParamSplit.location != NSNotFound) {
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NSString *key = [toSplitString substringToIndex:lastParamSplit.location];
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NSString *value = [[NSString alloc] initWithData:[[NSData alloc] initWithBase64EncodedString:[[[toSplitString stringByReplacingOccurrencesOfString:@"-" withString:@"+"] stringByReplacingOccurrencesOfString:@"_" withString:@"/"]substringFromIndex:lastParamSplit.location+1] options:0]encoding:NSUTF8StringEncoding];
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// NSString *value = [toSplitString substringFromIndex:lastParamSplit.location+1];
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[parserLastParamDict setValue: value forKey: key];
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}
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}
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// NSLog(@"parserLastParamDict is %@",parserLastParamDict);
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//后面已经parser完成，接下来需要解析到profile里面
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//abc.xyz:12345:auth_sha1_v2:rc4-md5:tls1.2_ticket_auth:{base64(password)}
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NSRange range = [firstParam rangeOfString:@":"];
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NSString *ip = [firstParam substringToIndex:range.location];//第一个参数是域名
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firstParam = [firstParam substringFromIndex:range.location + range.length];
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range = [firstParam rangeOfString:@":"];
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NSString *port = [firstParam substringToIndex:range.location];//第二个参数是端口
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firstParam = [firstParam substringFromIndex:range.location + range.length];
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range = [firstParam rangeOfString:@":"];
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NSString *ssrProtocol = [firstParam substringToIndex:range.location];//第三个参数是协议
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firstParam = [firstParam substringFromIndex:range.location + range.length];
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range = [firstParam rangeOfString:@":"];
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NSString *encryption = [firstParam substringToIndex:range.location];//第四个参数是加密
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firstParam = [firstParam substringFromIndex:range.location + range.length];
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range = [firstParam rangeOfString:@":"];
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NSString *ssrObfs = [firstParam substringToIndex:range.location];//第五个参数是混淆协议
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firstParam = [firstParam substringFromIndex:range.location + range.length];
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// range = [firstParam rangeOfString:@":"];
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NSString *password = [[NSString alloc] initWithData:[[NSData alloc] initWithBase64EncodedString:firstParam options:0]encoding:NSUTF8StringEncoding];//第五个参数是base64密码
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NSString *ssrObfsParam = @"";
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NSString *remarks = @"";
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NSString *ssrProtocolParam = @"";
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for (NSString *key in parserLastParamDict) {
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NSLog(@"key: %@ value: %@", key, parserLastParamDict[key]);
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if ([key isEqual: @"obfsparam"]) {
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ssrObfsParam = parserLastParamDict[key];
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} else if ([key isEqual: @"remarks"]) {
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remarks = parserLastParamDict[key];
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} else if([key isEqual:@"protocolparam"]){
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ssrProtocolParam = parserLastParamDict[key];
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}
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}
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return @{@"ServerHost":ip,
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@"ServerPort": @([port integerValue]),
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@"Method": encryption,
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@"Password": password,
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@"ssrObfs":ssrObfs,
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@"ssrObfsParam":ssrObfsParam,
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@"ssrProtocol":ssrProtocol,
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@"ssrProtocolParam":ssrProtocolParam,
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@"Remark":remarks,
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};
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}
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}
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return nil;
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}
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