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Reactos
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#include <ntdef.h>#include <reactos/rossym.h>#include "rossympriv.h"#include <ntimage.h>
#define NDEBUG#include <debug.h>
BOOLEANRosSymCreateFromMem(PVOID ImageStart, ULONG_PTR ImageSize, PROSSYM_INFO *RosSymInfo){ PIMAGE_DOS_HEADER DosHeader; PIMAGE_NT_HEADERS NtHeaders; PIMAGE_SECTION_HEADER SectionHeader; ULONG SectionIndex; BOOLEAN RosSymSectionFound = FALSE; CHAR SectionName[IMAGE_SIZEOF_SHORT_NAME];
/* Check if MZ header is valid */ DosHeader = (PIMAGE_DOS_HEADER) ImageStart; if (ImageSize < sizeof(IMAGE_DOS_HEADER) || ! ROSSYM_IS_VALID_DOS_HEADER(DosHeader)) { DPRINT1("Image doesn't have a valid DOS header\n"); return FALSE; }
/* Locate NT header */ NtHeaders = (PIMAGE_NT_HEADERS)((char *) ImageStart + DosHeader->e_lfanew); if (ImageSize < DosHeader->e_lfanew + sizeof(IMAGE_NT_HEADERS) || ! ROSSYM_IS_VALID_NT_HEADERS(NtHeaders)) { DPRINT1("Image doesn't have a valid PE header\n"); return FALSE; }
/* Search for the section header */ SectionHeader = IMAGE_FIRST_SECTION(NtHeaders); if (ImageSize < (ULONG_PTR)((char *) (SectionHeader + NtHeaders->FileHeader.NumberOfSections) - (char *) ImageStart)) { DPRINT1("Image doesn't have valid section headers\n"); return FALSE; } strncpy(SectionName, ROSSYM_SECTION_NAME, IMAGE_SIZEOF_SHORT_NAME); for (SectionIndex = 0; SectionIndex < NtHeaders->FileHeader.NumberOfSections; SectionIndex++) { if (0 == memcmp(SectionName, SectionHeader->Name, IMAGE_SIZEOF_SHORT_NAME)) { RosSymSectionFound = TRUE; break; } SectionHeader++; }
if (!RosSymSectionFound) { DPRINT("No %s section found\n", ROSSYM_SECTION_NAME); return FALSE; }
/* Locate the section itself */ if (ImageSize < SectionHeader->PointerToRawData + SectionHeader->SizeOfRawData || SectionHeader->SizeOfRawData < sizeof(ROSSYM_HEADER)) { DPRINT("Invalid %s section\n", ROSSYM_SECTION_NAME); return FALSE; }
if (SectionHeader->VirtualAddress + SectionHeader->Misc.VirtualSize > ImageSize) { DPRINT("Bad %s section virtual size!\n", ROSSYM_SECTION_NAME); return FALSE; }
/* Load it */ return RosSymCreateFromRaw((char *) ImageStart + SectionHeader->VirtualAddress, SectionHeader->SizeOfRawData, RosSymInfo);}
/* EOF */