diff options
| author | Jules Laplace <julescarbon@gmail.com> | 2020-08-31 23:07:20 +0200 |
|---|---|---|
| committer | Jules Laplace <julescarbon@gmail.com> | 2020-08-31 23:07:20 +0200 |
| commit | 22721a013bdd10d5eb395ba18453585f5f3f1f7f (patch) | |
| tree | 5a920e31d6026ed5dc55265e5fd057febccc50e3 /StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m | |
| parent | d22d51a1ae49680015326857360eb699f31efced (diff) | |
rebuild the ios platform and the plugins
Diffstat (limited to 'StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m')
| -rw-r--r-- | StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m | 509 |
1 files changed, 509 insertions, 0 deletions
diff --git a/StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m b/StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m new file mode 100644 index 00000000..9991121d --- /dev/null +++ b/StoneIsland/platforms/ios/Pods/FirebaseCrashlytics/Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.m @@ -0,0 +1,509 @@ +// Copyright 2019 Google +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "Crashlytics/Shared/FIRCLSMachO/FIRCLSMachO.h" + +#include <Foundation/Foundation.h> + +#include <mach-o/dyld.h> +#include <mach-o/fat.h> +#include <mach-o/getsect.h> +#include <mach-o/ldsyms.h> + +#include <sys/mman.h> +#include <sys/stat.h> + +#include <dlfcn.h> +#include <fcntl.h> + +#include <stdio.h> + +#include <unistd.h> + +// This is defined in newer versions of iOS/macOS in usr/include/mach/machine.h +#define CLS_CPU_SUBTYPE_ARM64E ((cpu_subtype_t)2) + +static void FIRCLSMachOHeaderValues(FIRCLSMachOSliceRef slice, + const struct load_command** cmds, + uint32_t* cmdCount); +static bool FIRCLSMachOSliceIsValid(FIRCLSMachOSliceRef slice); + +bool FIRCLSMachOFileInitWithPath(FIRCLSMachOFileRef file, const char* path) { + struct stat statBuffer; + + if (!file || !path) { + return false; + } + + file->fd = 0; + file->mappedFile = NULL; + file->mappedSize = 0; + + file->fd = open(path, O_RDONLY); + if (file->fd < 0) { + // unable to open mach-o file + return false; + } + + if (fstat(file->fd, &statBuffer) == -1) { + close(file->fd); + return false; + } + + // We need some minimum size for this to even be a possible mach-o file. I believe + // its probably quite a bit bigger than this, but this at least covers something. + // We also need it to be a regular file. + file->mappedSize = (size_t)statBuffer.st_size; + if (statBuffer.st_size < 16 || !(statBuffer.st_mode & S_IFREG)) { + close(file->fd); + return false; + } + + // Map the file to memory. MAP_SHARED can potentially reduce the amount of actual private + // memory needed to do this mapping. Also, be sure to check for the correct failure result. + file->mappedFile = mmap(0, file->mappedSize, PROT_READ, MAP_FILE | MAP_SHARED, file->fd, 0); + if (!file->mappedFile || (file->mappedFile == MAP_FAILED)) { + close(file->fd); + return false; + } + + return true; +} + +bool FIRCLSMachOFileInitWithCurrent(FIRCLSMachOFileRef file) { + struct FIRCLSMachOSlice slice = FIRCLSMachOSliceGetCurrent(); + + const char* imagePath = FIRCLSMachOSliceGetExecutablePath(&slice); + + return FIRCLSMachOFileInitWithPath(file, imagePath); +} + +void FIRCLSMachOFileDestroy(FIRCLSMachOFileRef file) { + if (!file) { + return; + } + + if (file->mappedFile && file->mappedSize > 0) { + munmap(file->mappedFile, file->mappedSize); + } + + close(file->fd); +} + +void FIRCLSMachOFileEnumerateSlices(FIRCLSMachOFileRef file, FIRCLSMachOSliceIterator block) { + FIRCLSMachOEnumerateSlicesAtAddress(file->mappedFile, block); +} + +void FIRCLSMachOEnumerateSlicesAtAddress(void* executableData, FIRCLSMachOSliceIterator block) { + // check the magic value, to determine if we have a fat header or not + uint32_t magicValue; + uint32_t archCount; + const struct fat_arch* fatArch; + struct FIRCLSMachOSlice slice; + + memset(&slice, 0, sizeof(struct FIRCLSMachOSlice)); + + magicValue = ((struct fat_header*)executableData)->magic; + if ((magicValue != FAT_MAGIC) && (magicValue != FAT_CIGAM)) { + slice.startAddress = executableData; + + // use this to fill in the values + FIRCLSMachOHeaderValues(&slice, NULL, NULL); + + block(&slice); + + return; + } + + archCount = OSSwapBigToHostInt32(((struct fat_header*)executableData)->nfat_arch); + fatArch = executableData + sizeof(struct fat_header); + + for (uint32_t i = 0; i < archCount; ++i) { + slice.cputype = OSSwapBigToHostInt32(fatArch->cputype); + slice.cpusubtype = OSSwapBigToHostInt32(fatArch->cpusubtype); + slice.startAddress = executableData + OSSwapBigToHostInt32(fatArch->offset); + + block(&slice); + + // advance to the next fat_arch structure + fatArch = (struct fat_arch*)((uintptr_t)fatArch + sizeof(struct fat_arch)); + } +} + +struct FIRCLSMachOSlice FIRCLSMachOFileSliceWithArchitectureName(FIRCLSMachOFileRef file, + const char* name) { + __block struct FIRCLSMachOSlice value; + + memset(&value, 0, sizeof(struct FIRCLSMachOSlice)); + + FIRCLSMachOFileEnumerateSlices(file, ^(FIRCLSMachOSliceRef slice) { + if (strcmp(FIRCLSMachOSliceGetArchitectureName(slice), name) == 0) { + value = *slice; + } + }); + + return value; +} + +static void FIRCLSMachOHeaderValues(FIRCLSMachOSliceRef slice, + const struct load_command** cmds, + uint32_t* cmdCount) { + const struct mach_header* header32 = (const struct mach_header*)slice->startAddress; + const struct mach_header_64* header64 = (const struct mach_header_64*)slice->startAddress; + uint32_t commandCount; + const void* commandsAddress; + + if (cmds) { + *cmds = NULL; + } + + if (cmdCount) { + *cmdCount = 0; + } + + if (!slice->startAddress) { + return; + } + + // the 32 and 64 bit versions have an identical structures, so this will work + switch (header32->magic) { + case MH_MAGIC: // 32-bit + case MH_CIGAM: + slice->cputype = header32->cputype; + slice->cpusubtype = header32->cpusubtype; + commandCount = header32->ncmds; + commandsAddress = slice->startAddress + sizeof(struct mach_header); + break; + case MH_MAGIC_64: // 64-bit + case MH_CIGAM_64: + slice->cputype = header64->cputype; + slice->cpusubtype = header64->cpusubtype; + commandCount = header64->ncmds; + commandsAddress = slice->startAddress + sizeof(struct mach_header_64); + break; + default: + // not a valid header + return; + } + + // assign everything back by reference + if (cmds) { + *cmds = commandsAddress; + } + + if (cmdCount) { + *cmdCount = commandCount; + } +} + +static bool FIRCLSMachOSliceIsValid(FIRCLSMachOSliceRef slice) { + if (!slice) { + return false; + } + + if (!slice->startAddress) { + return false; + } + + return true; +} + +void FIRCLSMachOSliceEnumerateLoadCommands(FIRCLSMachOSliceRef slice, + FIRCLSMachOLoadCommandIterator block) { + const struct load_command* cmd; + uint32_t cmdCount; + + if (!block) { + return; + } + + if (!FIRCLSMachOSliceIsValid(slice)) { + return; + } + + FIRCLSMachOHeaderValues(slice, &cmd, &cmdCount); + + for (uint32_t i = 0; cmd != NULL && i < cmdCount; ++i) { + block(cmd->cmd, cmd->cmdsize, cmd); + + cmd = (struct load_command*)((uintptr_t)cmd + cmd->cmdsize); + } +} + +struct FIRCLSMachOSlice FIRCLSMachOSliceGetCurrent(void) { + const NXArchInfo* archInfo; + struct FIRCLSMachOSlice slice; + void* executableSymbol; + Dl_info dlinfo; + + archInfo = NXGetLocalArchInfo(); + if (archInfo) { + slice.cputype = archInfo->cputype; + slice.cpusubtype = archInfo->cpusubtype; + } + + slice.startAddress = NULL; + + // This call can fail when Exported Symbols File in Build Settings is missing the symbol value + // defined as _MH_EXECUTE_SYM (if you look in the header the underscored MH_EXECUTE_SYM define is + // there) + executableSymbol = dlsym(RTLD_MAIN_ONLY, MH_EXECUTE_SYM); + + // get the address of the main function + if (dladdr(executableSymbol, &dlinfo) != 0) { + slice.startAddress = dlinfo.dli_fbase; + } + + return slice; +} + +struct FIRCLSMachOSlice FIRCLSMachOSliceWithHeader(void* machHeader) { + struct FIRCLSMachOSlice slice; + + slice.startAddress = machHeader; + + return slice; +} + +const char* FIRCLSMachOSliceGetExecutablePath(FIRCLSMachOSliceRef slice) { + Dl_info info; + + if (!FIRCLSMachOSliceIsValid(slice)) { + return NULL; + } + + // use dladdr here to look up the information we need for a binary image + if (dladdr(slice->startAddress, &info) == 0) { + return NULL; + } + + return info.dli_fname; +} + +const char* FIRCLSMachOSliceGetArchitectureName(FIRCLSMachOSliceRef slice) { + const NXArchInfo* archInfo; + + // there are some special cases here for types not handled by earlier OSes + if (slice->cputype == CPU_TYPE_ARM && slice->cpusubtype == CPU_SUBTYPE_ARM_V7S) { + return "armv7s"; + } + + if (slice->cputype == (CPU_TYPE_ARM | CPU_ARCH_ABI64)) { + if (slice->cpusubtype == CLS_CPU_SUBTYPE_ARM64E) { + return "arm64e"; + } else if (slice->cpusubtype == CPU_SUBTYPE_ARM64_ALL) { + return "arm64"; + } + } + + if (slice->cputype == (CPU_TYPE_ARM) && slice->cpusubtype == CPU_SUBTYPE_ARM_V7K) { + return "armv7k"; + } + + archInfo = NXGetArchInfoFromCpuType(slice->cputype, slice->cpusubtype); + if (!archInfo) { + return "unknown"; + } + + return archInfo->name; +} + +bool FIRCLSMachOSliceIs64Bit(FIRCLSMachOSliceRef slice) { + // I'm pretty sure this is sufficient... + return (slice->cputype & CPU_ARCH_ABI64) == CPU_ARCH_ABI64; +} + +bool FIRCLSMachOSliceGetSectionByName(FIRCLSMachOSliceRef slice, + const char* segName, + const char* sectionName, + const void** ptr) { + if (!ptr) { + return false; + } + + *ptr = NULL; // make sure this is set before returning + + FIRCLSMachOSection section; + + if (!FIRCLSMachOSliceInitSectionByName(slice, segName, sectionName, §ion)) { + return false; + } + + // WARNING: this calculation isn't correct, but is here to maintain backwards + // compatibility for now with callers of FIRCLSMachOSliceGetSectionByName. All new + // users should be calling FIRCLSMachOSliceInitSectionByName + *ptr = (const void*)((uintptr_t)slice->startAddress + section.offset); + + return true; +} + +bool FIRCLSMachOSliceInitSectionByName(FIRCLSMachOSliceRef slice, + const char* segName, + const char* sectionName, + FIRCLSMachOSection* section) { + if (!FIRCLSMachOSliceIsValid(slice)) { + return false; + } + + if (!section) { + return false; + } + + memset(section, 0, sizeof(FIRCLSMachOSection)); + + if (FIRCLSMachOSliceIs64Bit(slice)) { + const struct section_64* sect = + getsectbynamefromheader_64(slice->startAddress, segName, sectionName); + if (!sect) { + return false; + } + + section->addr = sect->addr; + section->size = sect->size; + section->offset = sect->offset; + } else { + const struct section* sect = getsectbynamefromheader(slice->startAddress, segName, sectionName); + if (!sect) { + return false; + } + + section->addr = sect->addr; + section->size = sect->size; + section->offset = sect->offset; + } + + return true; +} + +// TODO: this is left in-place just to ensure that old crashltyics + new fabric are still compatible +// with each other. As a happy bonus, if that situation does come up, this will also fix the bug +// that was preventing compact unwind on arm64 + iOS 9 from working correctly. +void FIRCLSMachOSliceGetUnwindInformation(FIRCLSMachOSliceRef slice, + const void** ehFrame, + const void** unwindInfo) { + if (!unwindInfo && !ehFrame) { + return; + } + + bool found = false; + intptr_t slide = 0; + + // This is inefficient, but we have no other safe way to do this correctly. Modifying the + // FIRCLSMachOSlice structure is tempting, but could introduce weird binary-compatibility issues + // with version mis-matches. + for (uint32_t i = 0; i < _dyld_image_count(); ++i) { + const struct mach_header* header = _dyld_get_image_header(i); + + if (header == slice->startAddress) { + found = true; + slide = _dyld_get_image_vmaddr_slide(i); + break; + } + } + + // make sure we were able to find a matching value + if (!found) { + return; + } + + FIRCLSMachOSection section; + + if (unwindInfo) { + if (FIRCLSMachOSliceInitSectionByName(slice, SEG_TEXT, "__unwind_info", §ion)) { + *unwindInfo = (void*)(section.addr + slide); + } + } + + if (ehFrame) { + if (FIRCLSMachOSliceInitSectionByName(slice, SEG_TEXT, "__eh_frame", §ion)) { + *ehFrame = (void*)(section.addr + slide); + } + } +} + +uint8_t const* FIRCLSMachOGetUUID(const struct load_command* cmd) { + return ((const struct uuid_command*)cmd)->uuid; +} + +const char* FIRCLSMachOGetDylibPath(const struct load_command* cmd) { + const struct dylib_command* dylibcmd = (const struct dylib_command*)cmd; + + return (const char*)((uintptr_t)cmd + dylibcmd->dylib.name.offset); +} + +bool FIRCLSMachOGetEncrypted(const struct load_command* cmd) { + return ((struct encryption_info_command*)cmd)->cryptid > 0; +} + +static FIRCLSMachOVersion FIRCLSMachOVersionFromEncoded(uint32_t encoded) { + FIRCLSMachOVersion version; + + version.major = (encoded & 0xffff0000) >> 16; + version.minor = (encoded & 0x0000ff00) >> 8; + version.bugfix = encoded & 0x000000ff; + + return version; +} + +FIRCLSMachOVersion FIRCLSMachOGetMinimumOSVersion(const struct load_command* cmd) { + return FIRCLSMachOVersionFromEncoded(((const struct version_min_command*)cmd)->version); +} + +FIRCLSMachOVersion FIRCLSMachOGetLinkedSDKVersion(const struct load_command* cmd) { + return FIRCLSMachOVersionFromEncoded(((const struct version_min_command*)cmd)->sdk); +} + +FIRCLSMachOSegmentCommand FIRCLSMachOGetSegmentCommand(const struct load_command* cmd) { + FIRCLSMachOSegmentCommand segmentCommand; + + memset(&segmentCommand, 0, sizeof(FIRCLSMachOSegmentCommand)); + + if (!cmd) { + return segmentCommand; + } + + if (cmd->cmd == LC_SEGMENT) { + struct segment_command* segCmd = (struct segment_command*)cmd; + + memcpy(segmentCommand.segname, segCmd->segname, 16); + segmentCommand.vmaddr = segCmd->vmaddr; + segmentCommand.vmsize = segCmd->vmsize; + } else if (cmd->cmd == LC_SEGMENT_64) { + struct segment_command_64* segCmd = (struct segment_command_64*)cmd; + + memcpy(segmentCommand.segname, segCmd->segname, 16); + segmentCommand.vmaddr = segCmd->vmaddr; + segmentCommand.vmsize = segCmd->vmsize; + } + + return segmentCommand; +} + +NSString* FIRCLSMachONormalizeUUID(CFUUIDBytes* uuidBytes) { + CFUUIDRef uuid = CFUUIDCreateFromUUIDBytes(kCFAllocatorDefault, *uuidBytes); + + NSString* string = CFBridgingRelease(CFUUIDCreateString(kCFAllocatorDefault, uuid)); + + CFRelease(uuid); + + return [[string stringByReplacingOccurrencesOfString:@"-" withString:@""] lowercaseString]; +} + +NSString* FIRCLSMachOFormatVersion(FIRCLSMachOVersion* version) { + if (!version) { + return nil; + } + + return [NSString stringWithFormat:@"%d.%d.%d", version->major, version->minor, version->bugfix]; +} |
