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Sweden-Number/tools/winedump/pe.c

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/*
* PE dumping utility
*
* Copyright 2001 Eric Pouech
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include "winnt.h"
#include "winedump.h"
#include "pe.h"
static void* base;
static unsigned long total_len;
static IMAGE_NT_HEADERS* nt_headers;
enum FileSig {SIG_UNKNOWN, SIG_DOS, SIG_PE, SIG_DBG};
char* get_time_str(DWORD _t)
{
time_t t = (time_t)_t;
static char buf[128];
/* FIXME: I don't get the same values from MS' pedump running under Wine...
* I wonder if Wine isn't broken wrt to GMT settings...
*/
strncpy(buf, ctime(&t), sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
if (buf[strlen(buf)-1] == '\n')
buf[strlen(buf)-1] = '\0';
return buf;
}
static const char* get_machine_str(DWORD mach)
{
switch (mach)
{
case IMAGE_FILE_MACHINE_UNKNOWN: return "Unknown";
case IMAGE_FILE_MACHINE_I860: return "i860";
case IMAGE_FILE_MACHINE_I386: return "i386";
case IMAGE_FILE_MACHINE_R3000: return "R3000";
case IMAGE_FILE_MACHINE_R4000: return "R4000";
case IMAGE_FILE_MACHINE_R10000: return "R10000";
case IMAGE_FILE_MACHINE_ALPHA: return "Alpha";
case IMAGE_FILE_MACHINE_POWERPC: return "PowerPC";
}
return "???";
}
void* PRD(unsigned long prd, unsigned long len)
{
return (prd + len > total_len) ? NULL : (char*)base + prd;
}
unsigned long Offset(void* ptr)
{
if (ptr < base) {printf("<<<<<ptr below\n");return 0;}
if (ptr >= base + total_len) {printf("<<<<<ptr above\n");return 0;}
return ptr - base;
}
void* RVA(unsigned long rva, unsigned long len)
{
IMAGE_SECTION_HEADER* sectHead;
int i;
sectHead = (IMAGE_SECTION_HEADER*)((char*)nt_headers + sizeof(DWORD) +
sizeof(IMAGE_FILE_HEADER) +
nt_headers->FileHeader.SizeOfOptionalHeader);
if (rva == 0) return NULL;
for (i = nt_headers->FileHeader.NumberOfSections - 1; i >= 0; i--)
{
if (sectHead[i].VirtualAddress <= rva &&
rva + len <= (DWORD)sectHead[i].VirtualAddress + sectHead[i].SizeOfRawData)
break;
}
if (i < 0)
{
printf("rva not found in any section (%lu)\n", rva);
return NULL;
}
/* return image import directory offset */
return PRD(sectHead[i].PointerToRawData + rva - sectHead[i].VirtualAddress, len);
}
static void* get_dir(unsigned idx)
{
if (idx >= nt_headers->OptionalHeader.NumberOfRvaAndSizes)
return NULL;
return RVA(nt_headers->OptionalHeader.DataDirectory[idx].VirtualAddress,
nt_headers->OptionalHeader.DataDirectory[idx].Size);
}
static const char* DirectoryNames[16] = {
"EXPORT", "IMPORT", "RESOURCE", "EXCEPTION",
"SECURITY", "BASERELOC", "DEBUG", "ARCHITECTURE",
"GLOBALPTR", "TLS", "LOAD_CONFIG", "Bound IAT",
"IAT", "Delay IAT", "COM Descript", ""
};
static void dump_pe_header(void)
{
char *str;
IMAGE_FILE_HEADER *fileHeader;
IMAGE_OPTIONAL_HEADER *optionalHeader;
unsigned i;
printf("File Header\n");
fileHeader = &nt_headers->FileHeader;
printf(" Machine: %04X (%s)\n",
fileHeader->Machine, get_machine_str(fileHeader->Machine));
printf(" Number of Sections: %d\n", fileHeader->NumberOfSections);
printf(" TimeDateStamp: %08lX (%s) offset %ld\n",
fileHeader->TimeDateStamp, get_time_str(fileHeader->TimeDateStamp),
Offset(&(fileHeader->TimeDateStamp)));
printf(" PointerToSymbolTable: %08lX\n", fileHeader->PointerToSymbolTable);
printf(" NumberOfSymbols: %08lX\n", fileHeader->NumberOfSymbols);
printf(" SizeOfOptionalHeader: %04X\n", fileHeader->SizeOfOptionalHeader);
printf(" Characteristics: %04X\n", fileHeader->Characteristics);
#define X(f,s) if (fileHeader->Characteristics & f) printf(" %s\n", s)
X(IMAGE_FILE_RELOCS_STRIPPED, "RELOCS_STRIPPED");
X(IMAGE_FILE_EXECUTABLE_IMAGE, "EXECUTABLE_IMAGE");
X(IMAGE_FILE_LINE_NUMS_STRIPPED, "LINE_NUMS_STRIPPED");
X(IMAGE_FILE_LOCAL_SYMS_STRIPPED, "LOCAL_SYMS_STRIPPED");
X(IMAGE_FILE_16BIT_MACHINE, "16BIT_MACHINE");
X(IMAGE_FILE_BYTES_REVERSED_LO, "BYTES_REVERSED_LO");
X(IMAGE_FILE_32BIT_MACHINE, "32BIT_MACHINE");
X(IMAGE_FILE_DEBUG_STRIPPED, "DEBUG_STRIPPED");
X(IMAGE_FILE_SYSTEM, "SYSTEM");
X(IMAGE_FILE_DLL, "DLL");
X(IMAGE_FILE_BYTES_REVERSED_HI, "BYTES_REVERSED_HI");
#undef X
printf("\n");
/* hope we have the right size */
printf("Optional Header\n");
optionalHeader = &nt_headers->OptionalHeader;
printf(" Magic 0x%-4X %u\n",
optionalHeader->Magic, optionalHeader->Magic);
printf(" linker version %u.%02u\n",
optionalHeader->MajorLinkerVersion, optionalHeader->MinorLinkerVersion);
printf(" size of code 0x%-8lx %lu\n",
optionalHeader->SizeOfCode, optionalHeader->SizeOfCode);
printf(" size of initialized data 0x%-8lx %lu\n",
optionalHeader->SizeOfInitializedData, optionalHeader->SizeOfInitializedData);
printf(" size of uninitialized data 0x%-8lx %lu\n",
optionalHeader->SizeOfUninitializedData, optionalHeader->SizeOfUninitializedData);
printf(" entrypoint RVA 0x%-8lx %lu\n",
optionalHeader->AddressOfEntryPoint, optionalHeader->AddressOfEntryPoint);
printf(" base of code 0x%-8lx %lu\n",
optionalHeader->BaseOfCode, optionalHeader->BaseOfCode);
printf(" base of data 0x%-8lX %lu\n",
optionalHeader->BaseOfData, optionalHeader->BaseOfData);
printf(" image base 0x%-8lX %lu\n",
optionalHeader->ImageBase, optionalHeader->ImageBase);
printf(" section align 0x%-8lx %lu\n",
optionalHeader->SectionAlignment, optionalHeader->SectionAlignment);
printf(" file align 0x%-8lx %lu\n",
optionalHeader->FileAlignment, optionalHeader->FileAlignment);
printf(" required OS version %u.%02u\n",
optionalHeader->MajorOperatingSystemVersion, optionalHeader->MinorOperatingSystemVersion);
printf(" image version %u.%02u\n",
optionalHeader->MajorImageVersion, optionalHeader->MinorImageVersion);
printf(" subsystem version %u.%02u\n",
optionalHeader->MajorSubsystemVersion, optionalHeader->MinorSubsystemVersion);
printf(" Win32 Version 0x%lX\n", optionalHeader->Win32VersionValue);
printf(" size of image 0x%-8lx %lu\n",
optionalHeader->SizeOfImage, optionalHeader->SizeOfImage);
printf(" size of headers 0x%-8lx %lu\n",
optionalHeader->SizeOfHeaders, optionalHeader->SizeOfHeaders);
printf(" checksum 0x%lX\n", optionalHeader->CheckSum);
switch (optionalHeader->Subsystem)
{
default:
case IMAGE_SUBSYSTEM_UNKNOWN: str = "Unknown"; break;
case IMAGE_SUBSYSTEM_NATIVE: str = "Native"; break;
case IMAGE_SUBSYSTEM_WINDOWS_GUI: str = "Windows GUI"; break;
case IMAGE_SUBSYSTEM_WINDOWS_CUI: str = "Windows CUI"; break;
case IMAGE_SUBSYSTEM_OS2_CUI: str = "OS/2 CUI"; break;
case IMAGE_SUBSYSTEM_POSIX_CUI: str = "Posix CUI"; break;
}
printf(" Subsystem 0x%X (%s)\n", optionalHeader->Subsystem, str);
printf(" DLL flags 0x%X\n", optionalHeader->DllCharacteristics);
printf(" stack reserve size 0x%-8lx %lu\n",
optionalHeader->SizeOfStackReserve, optionalHeader->SizeOfStackReserve);
printf(" stack commit size 0x%-8lx %lu\n",
optionalHeader->SizeOfStackCommit, optionalHeader->SizeOfStackCommit);
printf(" heap reserve size 0x%-8lx %lu\n",
optionalHeader->SizeOfHeapReserve, optionalHeader->SizeOfHeapReserve);
printf(" heap commit size 0x%-8lx %lu\n",
optionalHeader->SizeOfHeapCommit, optionalHeader->SizeOfHeapCommit);
printf(" loader flags 0x%lX\n", optionalHeader->LoaderFlags);
printf(" RVAs & sizes 0x%lX\n", optionalHeader->NumberOfRvaAndSizes);
printf("\n");
printf("Data Directory\n");
printf("%ld\n", optionalHeader->NumberOfRvaAndSizes * sizeof(IMAGE_DATA_DIRECTORY));
for (i = 0; i < optionalHeader->NumberOfRvaAndSizes && i < 16; i++)
{
printf(" %-12s rva: 0x%-8lX size: %8lu\n",
DirectoryNames[i], optionalHeader->DataDirectory[i].VirtualAddress,
optionalHeader->DataDirectory[i].Size);
}
printf("\n");
}
static void dump_sections(void* addr, unsigned num_sect)
{
IMAGE_SECTION_HEADER* sectHead = addr;
unsigned i;
printf("Section Table\n");
for (i = 0; i < num_sect; i++, sectHead++)
{
printf(" %02d %-8s VirtSize: %-8lu VirtAddr: %-8lu 0x%08lx\n",
i + 1, sectHead->Name, sectHead->Misc.VirtualSize, sectHead->VirtualAddress,
sectHead->VirtualAddress);
printf(" raw data offs: %-8lu raw data size: %-8lu\n",
sectHead->PointerToRawData, sectHead->SizeOfRawData);
printf(" relocation offs: %-8lu relocations: %-8u\n",
sectHead->PointerToRelocations, sectHead->NumberOfRelocations);
printf(" line # offs: %-8lu line #'s: %-8u\n",
sectHead->PointerToLinenumbers, sectHead->NumberOfLinenumbers);
printf(" characteristics: 0x$%08lx\n", sectHead->Characteristics);
printf(" ");
#define X(b,s) if (sectHead->Characteristics & b) printf(s " ")
/* #define IMAGE_SCN_TYPE_REG 0x00000000 - Reserved */
/* #define IMAGE_SCN_TYPE_DSECT 0x00000001 - Reserved */
/* #define IMAGE_SCN_TYPE_NOLOAD 0x00000002 - Reserved */
/* #define IMAGE_SCN_TYPE_GROUP 0x00000004 - Reserved */
/* #define IMAGE_SCN_TYPE_NO_PAD 0x00000008 - Reserved */
/* #define IMAGE_SCN_TYPE_COPY 0x00000010 - Reserved */
X(IMAGE_SCN_CNT_CODE, "CODE");
X(IMAGE_SCN_CNT_INITIALIZED_DATA, "INITIALIZED_DATA");
X(IMAGE_SCN_CNT_UNINITIALIZED_DATA, "UNINITIALIZED_DATA");
X(IMAGE_SCN_LNK_OTHER, "LNK_OTHER");
X(IMAGE_SCN_LNK_INFO, "LNK_INFO");
/* #define IMAGE_SCN_TYPE_OVER 0x00000400 - Reserved */
X(IMAGE_SCN_LNK_REMOVE, "LNK_REMOVE");
X(IMAGE_SCN_LNK_COMDAT, "LNK_COMDAT");
/* 0x00002000 - Reserved */
/* #define IMAGE_SCN_MEM_PROTECTED 0x00004000 - Obsolete */
X(IMAGE_SCN_MEM_FARDATA, "MEM_FARDATA");
/* #define IMAGE_SCN_MEM_SYSHEAP 0x00010000 - Obsolete */
X(IMAGE_SCN_MEM_PURGEABLE, "MEM_PURGEABLE");
X(IMAGE_SCN_MEM_16BIT, "MEM_16BIT");
X(IMAGE_SCN_MEM_LOCKED, "MEM_LOCKED");
X(IMAGE_SCN_MEM_PRELOAD, "MEM_PRELOAD");
X(IMAGE_SCN_ALIGN_1BYTES, "ALIGN_1BYTES");
X(IMAGE_SCN_ALIGN_2BYTES, "ALIGN_2BYTES");
X(IMAGE_SCN_ALIGN_4BYTES, "ALIGN_4BYTES");
X(IMAGE_SCN_ALIGN_8BYTES, "ALIGN_8BYTES");
X(IMAGE_SCN_ALIGN_16BYTES, "ALIGN_16BYTES");
X(IMAGE_SCN_ALIGN_32BYTES, "ALIGN_32BYTES");
X(IMAGE_SCN_ALIGN_64BYTES, "ALIGN_64BYTES");
/* 0x00800000 - Unused */
X(IMAGE_SCN_LNK_NRELOC_OVFL, "LNK_NRELOC_OVFL");
X(IMAGE_SCN_MEM_DISCARDABLE, "MEM_DISCARDABLE");
X(IMAGE_SCN_MEM_NOT_CACHED, "MEM_NOT_CACHED");
X(IMAGE_SCN_MEM_NOT_PAGED, "MEM_NOT_PAGED");
X(IMAGE_SCN_MEM_SHARED, "MEM_SHARED");
X(IMAGE_SCN_MEM_EXECUTE, "MEM_EXECUTE");
X(IMAGE_SCN_MEM_READ, "MEM_READ");
X(IMAGE_SCN_MEM_WRITE, "MEM_WRITE");
#undef X
printf("\n\n");
}
printf("\n");
}
static void dump_dir_exported_functions(void)
{
IMAGE_EXPORT_DIRECTORY *exportDir = get_dir(IMAGE_FILE_EXPORT_DIRECTORY);
unsigned int i;
DWORD* pFunc;
DWORD* pName;
WORD* pOrdl;
DWORD* map;
parsed_symbol symbol;
if (!exportDir) return;
printf("Exports table:\n");
printf("\n");
printf(" Name: %s\n", (char*)RVA(exportDir->Name, sizeof(DWORD)));
printf(" Characteristics: %08lx\n", exportDir->Characteristics);
printf(" TimeDateStamp: %08lX %s\n",
exportDir->TimeDateStamp, get_time_str(exportDir->TimeDateStamp));
printf(" Version: %u.%02u\n", exportDir->MajorVersion, exportDir->MinorVersion);
printf(" Ordinal base: %lu\n", exportDir->Base);
printf(" # of functions: %lu\n", exportDir->NumberOfFunctions);
printf(" # of Names: %lu\n", exportDir->NumberOfNames);
printf("Adresses of functions: %08lX\n", exportDir->AddressOfFunctions);
printf("Adresses of name ordinals: %08lX\n", exportDir->AddressOfNameOrdinals);
printf("Adresses of names: %08lX\n", exportDir->AddressOfNames);
printf("\n");
printf(" Entry Pt Ordn Name\n");
pFunc = RVA(exportDir->AddressOfFunctions, exportDir->NumberOfFunctions * sizeof(DWORD));
if (!pFunc) {printf("Can't grab functions' address table\n"); return;}
pName = RVA(exportDir->AddressOfNames, exportDir->NumberOfNames * sizeof(DWORD));
if (!pName) {printf("Can't grab functions' name table\n"); return;}
pOrdl = RVA(exportDir->AddressOfNameOrdinals, exportDir->NumberOfNames * sizeof(WORD));
if (!pOrdl) {printf("Can't grab functions' ordinal table\n"); return;}
/* bit map of used funcs */
map = calloc(((exportDir->NumberOfFunctions + 31) & ~31) / 32, sizeof(DWORD));
if (!map) fatal("no memory");
for (i = 0; i < exportDir->NumberOfNames; i++, pName++, pOrdl++)
{
char* name;
map[*pOrdl / 32] |= 1 << (*pOrdl % 32);
name = (char*)RVA(*pName, sizeof(DWORD));
if (name && globals.do_demangle)
{
printf(" %08lX %4lu ", pFunc[*pOrdl], exportDir->Base + *pOrdl);
symbol_init(&symbol, name);
if (symbol_demangle(&symbol) == -1)
printf(name);
else if (symbol.flags & SYM_DATA)
printf(symbol.arg_text[0]);
else
output_prototype(stdout, &symbol);
printf("\n");
symbol_clear(&symbol);
}
else
{
printf(" %08lX %4lu %s\n", pFunc[*pOrdl], exportDir->Base + *pOrdl, name);
}
}
pFunc = RVA(exportDir->AddressOfFunctions, exportDir->NumberOfFunctions * sizeof(DWORD));
if (!pFunc) {printf("Can't grab functions' address table\n"); return;}
for (i = 0; i < exportDir->NumberOfFunctions; i++)
{
if (pFunc[i] && !(map[i / 32] & (1 << (i % 32))))
{
printf(" %08lX %4lu <by ordinal>\n", pFunc[i], exportDir->Base + i);
}
}
free(map);
printf("\n");
}
static void dump_dir_imported_functions(void)
{
IMAGE_IMPORT_DESCRIPTOR *importDesc = get_dir(IMAGE_FILE_IMPORT_DIRECTORY);
unsigned nb_imp, i;
if (!importDesc) return;
nb_imp = nt_headers->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY].Size /
sizeof(*importDesc);
if (!nb_imp) return;
printf("Import Table size: %lu\n",
nt_headers->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY].Size);/* FIXME */
for (i = 0; i < nb_imp - 1; i++) /* the last descr is set as 0 as a sentinel */
{
IMAGE_THUNK_DATA* il;
IMAGE_IMPORT_BY_NAME* iibn;
if (!importDesc->Name ||
(importDesc->u.OriginalFirstThunk == NULL && importDesc->FirstThunk == NULL))
{
/* FIXME */
printf("<<<<<<<null entry\n");
break;
}
printf(" offset %lu %s\n", Offset(importDesc), (char*)RVA(importDesc->Name, sizeof(DWORD)));
printf(" Hint/Name Table: %08lX\n", (DWORD)importDesc->u.OriginalFirstThunk);
printf(" TimeDataStamp: %08lX (%s)\n",
importDesc->TimeDateStamp, get_time_str(importDesc->TimeDateStamp));
printf(" ForwarderChain: %08lX\n", importDesc->ForwarderChain);
printf(" First thunk RVA: %08lX (delta: %u 0x%x)\n",
(DWORD)importDesc->FirstThunk, -1, -1); /* FIXME */
printf(" Ordn Name\n");
il = (importDesc->u.OriginalFirstThunk != 0) ?
RVA((DWORD)importDesc->u.OriginalFirstThunk, sizeof(DWORD)) :
RVA((DWORD)importDesc->FirstThunk, sizeof(DWORD));
if (!il) {printf("Can't grab thunk data, going to next imported DLL\n"); continue;}
for (; il->u1.Ordinal; il++)
{
if (IMAGE_SNAP_BY_ORDINAL(il->u1.Ordinal))
{
printf(" %4lu <by ordinal>\n", IMAGE_ORDINAL(il->u1.Ordinal));
}
else
{
iibn = RVA((DWORD)il->u1.AddressOfData, sizeof(DWORD));
if (!il)
{
printf("Can't grab import by name info, skipping to next ordinal\n");
}
else
{
printf(" %4u %s %lx\n", iibn->Hint, iibn->Name, (DWORD)il->u1.AddressOfData);
}
}
}
printf("\n");
importDesc++;
}
printf("\n");
}
static void dump_dir_debug_dir(IMAGE_DEBUG_DIRECTORY* idd, int idx)
{
const char* str;
printf("Directory %02u\n", idx + 1);
printf(" Characteristics: %08lX\n", idd->Characteristics);
printf(" TimeDateStamp: %08lX %s\n",
idd->TimeDateStamp, get_time_str(idd->TimeDateStamp));
printf(" Version %u.%02u\n", idd->MajorVersion, idd->MinorVersion);
switch (idd->Type)
{
default:
case IMAGE_DEBUG_TYPE_UNKNOWN: str = "UNKNOWN"; break;
case IMAGE_DEBUG_TYPE_COFF: str = "COFF"; break;
case IMAGE_DEBUG_TYPE_CODEVIEW: str = "CODEVIEW"; break;
case IMAGE_DEBUG_TYPE_FPO: str = "FPO"; break;
case IMAGE_DEBUG_TYPE_MISC: str = "MISC"; break;
case IMAGE_DEBUG_TYPE_EXCEPTION: str = "EXCEPTION"; break;
case IMAGE_DEBUG_TYPE_FIXUP: str = "FIXUP"; break;
case IMAGE_DEBUG_TYPE_OMAP_TO_SRC: str = "OMAP_TO_SRC"; break;
case IMAGE_DEBUG_TYPE_OMAP_FROM_SRC:str = "OMAP_FROM_SRC"; break;
case IMAGE_DEBUG_TYPE_BORLAND: str = "BORLAND"; break;
case IMAGE_DEBUG_TYPE_RESERVED10: str = "RESERVED10"; break;
}
printf(" Type: %lu (%s)\n", idd->Type, str);
printf(" SizeOfData: %lu\n", idd->SizeOfData);
printf(" AddressOfRawData: %08lX\n", idd->AddressOfRawData);
printf(" PointerToRawData: %08lX\n", idd->PointerToRawData);
switch (idd->Type)
{
case IMAGE_DEBUG_TYPE_UNKNOWN:
break;
case IMAGE_DEBUG_TYPE_COFF:
break;
case IMAGE_DEBUG_TYPE_CODEVIEW:
dump_codeview(idd->PointerToRawData, idd->SizeOfData);
break;
case IMAGE_DEBUG_TYPE_FPO:
break;
case IMAGE_DEBUG_TYPE_MISC:
{
IMAGE_DEBUG_MISC* misc = PRD(idd->PointerToRawData, idd->SizeOfData);
if (!misc) {printf("Can't get misc debug information\n"); break;}
printf(" DataType: %lu (%s)\n",
misc->DataType,
(misc->DataType == IMAGE_DEBUG_MISC_EXENAME) ? "Exe name" : "Unknown");
printf(" Length: %lu\n", misc->Length);
printf(" Unicode: %s\n", misc->Unicode ? "Yes" : "No");
printf(" Data: %s\n", misc->Data);
}
break;
case IMAGE_DEBUG_TYPE_EXCEPTION:
break;
case IMAGE_DEBUG_TYPE_FIXUP:
break;
case IMAGE_DEBUG_TYPE_OMAP_TO_SRC:
break;
case IMAGE_DEBUG_TYPE_OMAP_FROM_SRC:
break;
case IMAGE_DEBUG_TYPE_BORLAND:
break;
case IMAGE_DEBUG_TYPE_RESERVED10:
break;
}
printf("\n");
}
static void dump_dir_debug(void)
{
IMAGE_DEBUG_DIRECTORY* debugDir = get_dir(IMAGE_FILE_DEBUG_DIRECTORY);
unsigned nb_dbg, i;
if (!debugDir) return;
nb_dbg = nt_headers->OptionalHeader.DataDirectory[IMAGE_FILE_DEBUG_DIRECTORY].Size /
sizeof(*debugDir);
if (!nb_dbg) return;
printf("Debug Table (%u directories)\n", nb_dbg);
for (i = 0; i < nb_dbg; i++)
{
dump_dir_debug_dir(debugDir, i);
debugDir++;
}
printf("\n");
}
static void dump_separate_dbg(void)
{
IMAGE_SEPARATE_DEBUG_HEADER*separateDebugHead = PRD(0, sizeof(separateDebugHead));
unsigned nb_dbg;
unsigned i;
IMAGE_DEBUG_DIRECTORY* debugDir;
if (!separateDebugHead) {printf("Can't grab the separate header, aborting\n"); return;}
printf ("Signature: %.2s (0x%4X)\n",
(char*)&separateDebugHead->Signature, separateDebugHead->Signature);
printf ("Flags: 0x%04X\n", separateDebugHead->Flags);
printf ("Machine: 0x%04X (%s)\n",
separateDebugHead->Machine, get_machine_str(separateDebugHead->Machine));
printf ("Characteristics: 0x%04X\n", separateDebugHead->Characteristics);
printf ("TimeDateStamp: 0x%08lX (%s)\n",
separateDebugHead->TimeDateStamp, get_time_str(separateDebugHead->TimeDateStamp));
printf ("CheckSum: 0x%08lX\n", separateDebugHead->CheckSum);
printf ("ImageBase: 0x%08lX\n", separateDebugHead->ImageBase);
printf ("SizeOfImage: 0x%08lX\n", separateDebugHead->SizeOfImage);
printf ("NumberOfSections: 0x%08lX\n", separateDebugHead->NumberOfSections);
printf ("ExportedNamesSize: 0x%08lX\n", separateDebugHead->ExportedNamesSize);
printf ("DebugDirectorySize: 0x%08lX\n", separateDebugHead->DebugDirectorySize);
if (!PRD(sizeof(IMAGE_SEPARATE_DEBUG_HEADER),
separateDebugHead->NumberOfSections * sizeof(IMAGE_SECTION_HEADER)))
{printf("Can't get the sections, aborting\n"); return;}
dump_sections(separateDebugHead + 1, separateDebugHead->NumberOfSections);
nb_dbg = separateDebugHead->DebugDirectorySize / sizeof(IMAGE_DEBUG_DIRECTORY);
debugDir = PRD(sizeof(IMAGE_SEPARATE_DEBUG_HEADER) +
separateDebugHead->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
separateDebugHead->ExportedNamesSize,
nb_dbg * sizeof(IMAGE_DEBUG_DIRECTORY));
if (!debugDir) {printf("Couldn't get the debug directory info, aborting\n");return;}
printf("Debug Table (%u directories)\n", nb_dbg);
for (i = 0; i < nb_dbg; i++)
{
dump_dir_debug_dir(debugDir, i);
debugDir++;
}
}
static void do_dump(void)
{
int all = (globals.dumpsect != NULL) && strcmp(globals.dumpsect, "ALL") == 0;
if (globals.do_dumpheader)
{
dump_pe_header();
/* FIX%E: should check ptr */
dump_sections((char*)nt_headers + sizeof(DWORD) +
sizeof(IMAGE_FILE_HEADER) + nt_headers->FileHeader.SizeOfOptionalHeader,
nt_headers->FileHeader.NumberOfSections);
}
else if (!globals.dumpsect)
{
/* show at least something here */
dump_pe_header();
}
if (globals.dumpsect)
{
if (all || !strcmp(globals.dumpsect, "import"))
dump_dir_imported_functions();
if (all || !strcmp(globals.dumpsect, "export"))
dump_dir_exported_functions();
if (all || !strcmp(globals.dumpsect, "debug"))
dump_dir_debug();
#if 0
/* FIXME: not implemented yet */
if (all || !strcmp(globals.dumpsect, "resource"))
dump_dir_resource();
if (all || !strcmp(globals.dumpsect, "reloc"))
dump_dir_reloc();
#endif
}
}
static enum FileSig check_headers(void)
{
WORD* pw;
DWORD* pdw;
IMAGE_DOS_HEADER* dh;
enum FileSig sig;
pw = PRD(0, sizeof(WORD));
if (!pw) {printf("Can't get main signature, aborting\n"); return 0;}
switch (*pw)
{
case IMAGE_DOS_SIGNATURE:
sig = SIG_DOS;
dh = PRD(0, sizeof(IMAGE_DOS_HEADER));
if (dh && dh->e_lfanew >= sizeof(*dh)) /* reasonable DOS header ? */
{
/* the signature is the first DWORD */
pdw = PRD(dh->e_lfanew, sizeof(DWORD));
if (pdw)
{
if (*pdw == IMAGE_NT_SIGNATURE)
{
nt_headers = PRD(dh->e_lfanew, sizeof(DWORD));
sig = SIG_PE;
}
else
{
printf("No PE Signature found\n");
}
}
else
{
printf("Can't get the extented signature, aborting\n");
}
}
break;
case 0x4944: /* "DI" */
sig = SIG_DBG;
break;
default:
printf("No known main signature (%.2s/%x), aborting\n", (char*)pw, *pw);
sig = SIG_UNKNOWN;
}
return sig;
}
int pe_analysis(const char* name, void (*fn)(void), enum FileSig wanted_sig)
{
int fd;
int len;
enum FileSig effective_sig;
int ret = 1;
struct stat s;
char *name_suffix;
setbuf(stdout, NULL);
len = strlen(name) + 5;
name_suffix = malloc(len);
strcpy(name_suffix, name);
strcat(name_suffix, ".dll");
fd = open(name_suffix, O_RDONLY);
if (fd == -1) fatal("Can't open file");
if (fstat(fd, &s) < 0) fatal("Can't get size");
total_len = s.st_size;
base = mmap(NULL, total_len, PROT_READ, MAP_PRIVATE, fd, 0);
if (base == (void*)-1) fatal("Can't map file");
effective_sig = check_headers();
if (effective_sig == SIG_UNKNOWN)
{
printf("Can't get a recognized file signature, aborting\n");
ret = 0;
}
else if (wanted_sig == SIG_UNKNOWN || wanted_sig == effective_sig)
{
switch (effective_sig)
{
case SIG_UNKNOWN: /* shouldn't happen... */
ret = 0; break;
case SIG_PE:
printf("Contents of \"%s\": %ld bytes\n\n", name, total_len);
(*fn)();
break;
case SIG_DBG:
dump_separate_dbg();
break;
case SIG_DOS:
ret = 0; break;
}
}
else
{
printf("Can't get a suitable file signature, aborting\n");
ret = 0;
}
if (ret) printf("Done dumping %s\n", name);
munmap(base, total_len);
close(fd);
return ret;
}
void dump_file(const char* name)
{
pe_analysis(name, do_dump, SIG_UNKNOWN);
}
#if 0
int main(int argc, char* argv[])
{
if (argc != 2) fatal("usage");
pe_analysis(argv[1], do_dump);
}
#endif
typedef struct _dll_symbol {
size_t ordinal;
char *symbol;
} dll_symbol;
static dll_symbol *dll_symbols = NULL;
static dll_symbol *dll_current_symbol = NULL;
/* Compare symbols by ordinal for qsort */
static int symbol_cmp(const void *left, const void *right)
{
return ((dll_symbol *)left)->ordinal > ((dll_symbol *)right)->ordinal;
}
/*******************************************************************
* dll_close
*
* Free resources used by DLL
*/
static void dll_close (void)
{
dll_symbol* ds;
if (!dll_symbols) {
fatal("No symbols");
}
for (ds = dll_symbols; ds->symbol; ds++)
free(ds->symbol);
free (dll_symbols);
dll_symbols = NULL;
}
static void do_grab_sym(void)
{
IMAGE_EXPORT_DIRECTORY *exportDir = get_dir(IMAGE_FILE_EXPORT_DIRECTORY);
unsigned i, j;
DWORD* pName;
DWORD* pFunc;
WORD* pOrdl;
char* ptr;
DWORD* map;
if (!exportDir) return;
pName = RVA(exportDir->AddressOfNames, exportDir->NumberOfNames * sizeof(DWORD));
if (!pName) {printf("Can't grab functions' name table\n"); return;}
pOrdl = RVA(exportDir->AddressOfNameOrdinals, exportDir->NumberOfNames * sizeof(WORD));
if (!pOrdl) {printf("Can't grab functions' ordinal table\n"); return;}
/* dll_close(); */
if (!(dll_symbols = (dll_symbol *) malloc((exportDir->NumberOfFunctions + 1) *
sizeof (dll_symbol))))
fatal ("Out of memory");
if (exportDir->AddressOfFunctions != exportDir->NumberOfNames || exportDir->Base > 1)
globals.do_ordinals = 1;
/* bit map of used funcs */
map = calloc(((exportDir->NumberOfFunctions + 31) & ~31) / 32, sizeof(DWORD));
if (!map) fatal("no memory");
for (j = 0; j < exportDir->NumberOfNames; j++, pOrdl++)
{
map[*pOrdl / 32] |= 1 << (*pOrdl % 32);
ptr = RVA(*pName++, sizeof(DWORD));
if (!ptr) ptr = "cant_get_function";
dll_symbols[j].symbol = strdup(ptr);
dll_symbols[j].ordinal = -1; /* indicate non-ordinal symbol */
assert(dll_symbols[j].symbol);
}
pFunc = RVA(exportDir->AddressOfFunctions, exportDir->NumberOfFunctions * sizeof(DWORD));
if (!pFunc) {printf("Can't grab functions' address table\n"); return;}
/* Set DLL output names */
if ((ptr = strrchr (globals.input_name, '/')))
globals.input_name = ptr + 1; /* Strip path */
OUTPUT_UC_DLL_NAME = str_toupper( strdup (OUTPUT_DLL_NAME));
for (i = 0; i < exportDir->NumberOfFunctions; i++)
{
if (pFunc[i] && !(map[i / 32] & (1 << (i % 32))))
{
char ordinal_text[256];
/* Ordinal only entry */
snprintf (ordinal_text, sizeof(ordinal_text), "%s_%lu",
globals.forward_dll ? globals.forward_dll : OUTPUT_UC_DLL_NAME,
exportDir->Base + i);
str_toupper(ordinal_text);
dll_symbols[j].symbol = strdup(ordinal_text);
assert(dll_symbols[j].symbol);
dll_symbols[j].ordinal = exportDir->Base + i;
j++;
assert(j <= exportDir->NumberOfFunctions);
}
}
free(map);
if (NORMAL)
printf("%lu named symbols in DLL, %lu total\n",
exportDir->NumberOfNames, exportDir->NumberOfFunctions);
qsort( dll_symbols, exportDir->NumberOfFunctions, sizeof(dll_symbol), symbol_cmp );
dll_symbols[exportDir->NumberOfFunctions].symbol = NULL;
dll_current_symbol = dll_symbols;
}
/*******************************************************************
* dll_open
*
* Open a DLL and read in exported symbols
*/
void dll_open (const char *dll_name)
{
pe_analysis(dll_name, do_grab_sym, SIG_PE);
}
/*******************************************************************
* dll_next_symbol
*
* Get next exported symbol from dll
*/
int dll_next_symbol (parsed_symbol * sym)
{
if (!dll_current_symbol->symbol)
return 1;
assert (dll_symbols);
sym->symbol = strdup (dll_current_symbol->symbol);
sym->ordinal = dll_current_symbol->ordinal;
dll_current_symbol++;
return 0;
}
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