154 lines
4.8 KiB
Objective-C
154 lines
4.8 KiB
Objective-C
//
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// ESPNetUtil.m
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// EspTouchDemo
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//
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// Created by fby on 5/15/15.
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// Copyright (c) 2015 fby. All rights reserved.
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//
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#import "ESP_NetUtil.h"
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#import "ESP_WifiUtil.h"
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#import "ESP_ByteUtil.h"
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#import "ESPVersionMacro.h"
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#define IP4_LEN 4
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#define IP6_LEN 16
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@implementation ESP_NetUtil
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/**
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* get local ip v4 or nil
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*
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* @return local ip v4 or nil
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*/
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+ (NSString *) getLocalIPv4
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{
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return [ESP_WifiUtil getIPAddress4];
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}
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/**
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* get local ip v6 or nil
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*
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* @return local ip v6 or nil
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*/
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+ (NSString *) getLocalIPv6
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{
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return [ESP_WifiUtil getIpAddress6];
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}
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+ (BOOL) isIPv4Addr:(NSString *)ipAddr
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{
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NSArray *ip4array = [ipAddr componentsSeparatedByString:@"."];
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return [ip4array count]==4;
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}
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+ (BOOL) isIPv4PrivateAddr:(NSString *)ipAddr4
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{
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NSArray *ip4array = [ipAddr4 componentsSeparatedByString:@"."];
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Byte byte0 = [[ip4array objectAtIndex:0]intValue];
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Byte byte1 = [[ip4array objectAtIndex:1]intValue];
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// Byte byte2 = [[ip4array objectAtIndex:2]intValue];
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// Byte byte3 = [[ip4array objectAtIndex:3]intValue];
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if (byte0==10) {
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// 10.0.0.0~10.255.255.255
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return YES;
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} else if (byte0==172&&16<=byte1&&byte1<=31) {
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// 172.16.0.0~172.31.255.255
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return YES;
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} else if (byte0==192&&byte1==168) {
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// 192.168.0.0~192.168.255.255
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return YES;
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}
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return NO;
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}
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+ (NSData *) getLocalInetAddress4ByAddr:(NSString *) localInetAddr4
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{
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NSArray *ip4array = [localInetAddr4 componentsSeparatedByString:@"."];
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Byte byte0 = [[ip4array objectAtIndex:0]intValue];
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Byte byte1 = [[ip4array objectAtIndex:1]intValue];
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Byte byte2 = [[ip4array objectAtIndex:2]intValue];
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Byte byte3 = [[ip4array objectAtIndex:3]intValue];
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Byte bytes[] = {byte0,byte1,byte2,byte3};
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NSData *ip4data = [NSData dataWithBytes:bytes length:IP4_LEN];
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return ip4data;
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}
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+ (NSData *) getLocalInetAddress6ByPort:(int) localPort
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{
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Byte lowPort = localPort & 0xff;
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Byte highPort = (localPort>>8) & 0xff;
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Byte bytes[] = {highPort,lowPort,0xff,0xff};
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NSData *ip6data = [NSData dataWithBytes:bytes length:IP4_LEN];
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return ip6data;
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}
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+ (NSData *) parseInetAddrByData: (NSData *) inetAddrData andOffset: (int) offset andCount: (int) count
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{
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return [inetAddrData subdataWithRange:NSMakeRange(offset, count)];
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}
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+ (NSString *) descriptionInetAddr4ByData: (NSData *) inetAddrData
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{
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// check whether inetAddrData is belong to IPv4
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if ([inetAddrData length]!=IP4_LEN) {
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return nil;
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}
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Byte inetAddrBytes[IP4_LEN];
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[inetAddrData getBytes:inetAddrBytes length:IP4_LEN];
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// hard coding
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return [NSString stringWithFormat:@"%d.%d.%d.%d",inetAddrBytes[0],inetAddrBytes[1],inetAddrBytes[2],inetAddrBytes[3]];
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}
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+ (NSString *) descriptionInetAddr6ByData: (NSData *) inetAddrData
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{
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// check whether inetAddrData is belong to IPv4
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if ([inetAddrData length]!=IP6_LEN) {
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return nil;
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}
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Byte inetAddrBytes[IP6_LEN];
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[inetAddrData getBytes:inetAddrBytes length:IP6_LEN];
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// hard coding
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return [NSString stringWithFormat:@"%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",inetAddrBytes[0],inetAddrBytes[1],inetAddrBytes[2],inetAddrBytes[3],inetAddrBytes[4],inetAddrBytes[5],inetAddrBytes[6],inetAddrBytes[7],inetAddrBytes[8],inetAddrBytes[9],inetAddrBytes[10],inetAddrBytes[11],inetAddrBytes[12],inetAddrBytes[13],inetAddrBytes[14],inetAddrBytes[15]];
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}
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+ (NSData *) parseBssid2bytes: (NSString *) bssid
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{
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NSArray *bssidArray = [bssid componentsSeparatedByString:@":"];
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NSInteger size = [bssidArray count];
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Byte bssidBytes[size];
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for (NSInteger i = 0; i < size; i++) {
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NSString *bssidStr = [bssidArray objectAtIndex:i];
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bssidBytes[i] = strtoul([bssidStr UTF8String], 0, 16);
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}
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return [[NSData alloc]initWithBytes:bssidBytes length:size];
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}
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+ (NSURLSessionConfiguration *) DEFAULT_SESSION_CONFIGURATION
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{
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static dispatch_once_t predicate;
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static NSURLSessionConfiguration *DEFAULT_SESSION_CONFIGURATION;
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dispatch_once(&predicate, ^{
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DEFAULT_SESSION_CONFIGURATION = [NSURLSessionConfiguration defaultSessionConfiguration];
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});
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return DEFAULT_SESSION_CONFIGURATION;
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}
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+ (void) tryOpenNetworkPermission
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{
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// only ios 10.0 later required to try open network permission
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if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"10.0")) {
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NSURL *url = [NSURL URLWithString:@"https://8.8.8.8"];
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NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:1000];
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NSURLSession *urlSession = [NSURLSession sessionWithConfiguration:[self DEFAULT_SESSION_CONFIGURATION] delegate:nil delegateQueue:[NSOperationQueue currentQueue]];
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[[urlSession dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error){
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}] resume];
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}
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}
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@end
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