本篇文章主要介绍了" iOS 如何获取 Mach-O 的 UUID"，主要涉及到方面的内容，对于IOS开发感兴趣的同学可以参考一下：
LC_UUID 一般简称为 UUID，是用来标示 Mach-O 文件的，做过崩溃堆栈符号化还原的同学应该都知道有 UUID 这个东西，你在进行符号解析的时候，就...
//
// LDAPMUUIDTool.m
// Pods
//
// Created by wangjiale on 2017/9/7.
//
//
#import "LDAPMUUIDTool.h"
#import
#include
#include
#include
#include
static NSMutableArray *_UUIDRecordArray;
@implementation LDAPMUUIDTool
+ (NSDictionary *)getUUIDDictionary {
NSDictionary *uuidDic = [[NSDictionary alloc] init];
int imageCount = (int)_dyld_image_count();
for(int iImg = 0; iImg < imageCount; iImg++) {
JYGetBinaryImage(iImg);
}
return uuidDic;
}
// 获取 Load Command, 会根据 header 的 magic 来判断是 64 位 还是 32 位
static uintptr_t firstCmdAfterHeader(const struct mach_header* const header) {
switch(header->magic) {
case MH_MAGIC:
case MH_CIGAM:
return (uintptr_t)(header + 1);
case MH_MAGIC_64:
case MH_CIGAM_64:
return (uintptr_t)(((struct mach_header_64*)header) + 1);
default:
return 0;
}
}
bool JYGetBinaryImage(int index) {
const struct mach_header* header = _dyld_get_image_header((unsigned)index);
if(header == NULL) {
return false;
}
uintptr_t cmdPtr = firstCmdAfterHeader(header);
if(cmdPtr == 0) {
return false;
}
uint8_t* uuid = NULL;
for(uint32_t iCmd = 0; iCmd < header->ncmds; iCmd++)
{
struct load_command* loadCmd = (struct load_command*)cmdPtr;
if (loadCmd->cmd == LC_UUID) {
struct uuid_command* uuidCmd = (struct uuid_command*)cmdPtr;
uuid = uuidCmd->uuid;
break;
}
cmdPtr += loadCmd->cmdsize;
}
const char* path = _dyld_get_image_name((unsigned)index);
NSString *imagePath = [NSString stringWithUTF8String:path];
NSArray *array = [imagePath componentsSeparatedByString:@"/"];
NSString *imageName = array[array.count - 1];
NSLog(@"buffer->name:%@",imageName);
const char* result = nil;
if(uuid != NULL)
{
result = uuidBytesToString(uuid);
NSString *lduuid = [NSString stringWithUTF8String:result];
NSLog(@"buffer->uuid:%@",lduuid);
}
return true;
}
static const char* uuidBytesToString(const uint8_t* uuidBytes) {
CFUUIDRef uuidRef = CFUUIDCreateFromUUIDBytes(NULL, *((CFUUIDBytes*)uuidBytes));
NSString* str = (__bridge_transfer NSString*)CFUUIDCreateString(NULL, uuidRef);
CFRelease(uuidRef);
return cString(str);
}
const char* cString(NSString* str) {
return str == NULL ? NULL : strdup(str.UTF8String);
}
@end
作者：Joy___
链接：https://www.jianshu.com/p/9201d5e34eb6
以上就介绍了 iOS 如何获取 Mach-O 的 UUID，包括了方面的内容，希望对IOS开发有兴趣的朋友有所帮助。
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