mirror of
https://github.com/reactos/reactos.git
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91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: lib/rossym/frommem.c
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* PURPOSE: Creating rossym info from an in-memory image
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*
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* PROGRAMMERS: Ge van Geldorp (gvg@reactos.com)
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*/
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#define NTOSAPI
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#include <ntddk.h>
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#include <reactos/rossym.h>
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#include "rossympriv.h"
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#include <ntimage.h>
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#define NDEBUG
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#include <debug.h>
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BOOLEAN
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RosSymCreateFromMem(PVOID ImageStart, ULONG_PTR ImageSize, PROSSYM_INFO *RosSymInfo)
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{
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PIMAGE_DOS_HEADER DosHeader;
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PIMAGE_NT_HEADERS NtHeaders;
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PIMAGE_SECTION_HEADER SectionHeader;
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ULONG SectionIndex;
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BOOLEAN RosSymSectionFound = FALSE;
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CHAR SectionName[IMAGE_SIZEOF_SHORT_NAME];
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/* Check if MZ header is valid */
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DosHeader = (PIMAGE_DOS_HEADER) ImageStart;
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if (ImageSize < sizeof(IMAGE_DOS_HEADER)
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|| ! ROSSYM_IS_VALID_DOS_HEADER(DosHeader))
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{
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DPRINT1("Image doesn't have a valid DOS header\n");
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return FALSE;
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}
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/* Locate NT header */
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NtHeaders = (PIMAGE_NT_HEADERS)((char *) ImageStart + DosHeader->e_lfanew);
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if (ImageSize < DosHeader->e_lfanew + sizeof(IMAGE_NT_HEADERS)
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|| ! ROSSYM_IS_VALID_NT_HEADERS(NtHeaders))
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{
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DPRINT1("Image doesn't have a valid PE header\n");
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return FALSE;
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}
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/* Search for the section header */
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SectionHeader = IMAGE_FIRST_SECTION(NtHeaders);
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if (ImageSize < (ULONG_PTR)((char *) (SectionHeader + NtHeaders->FileHeader.NumberOfSections)
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- (char *) ImageStart))
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{
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DPRINT1("Image doesn't have valid section headers\n");
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return FALSE;
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}
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strncpy(SectionName, ROSSYM_SECTION_NAME, IMAGE_SIZEOF_SHORT_NAME);
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for (SectionIndex = 0; SectionIndex < NtHeaders->FileHeader.NumberOfSections; SectionIndex++)
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{
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if (0 == memcmp(SectionName, SectionHeader->Name, IMAGE_SIZEOF_SHORT_NAME))
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{
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RosSymSectionFound = TRUE;
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break;
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}
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SectionHeader++;
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}
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if (!RosSymSectionFound)
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{
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DPRINT("No %s section found\n", ROSSYM_SECTION_NAME);
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return FALSE;
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}
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/* Locate the section itself */
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if (ImageSize < SectionHeader->PointerToRawData + SectionHeader->SizeOfRawData
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|| SectionHeader->SizeOfRawData < sizeof(ROSSYM_HEADER))
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{
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DPRINT("Invalid %s section\n", ROSSYM_SECTION_NAME);
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return FALSE;
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}
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if (SectionHeader->VirtualAddress + SectionHeader->Misc.VirtualSize > ImageSize)
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{
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DPRINT("Bad %s section virtual size!\n", ROSSYM_SECTION_NAME);
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return FALSE;
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}
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/* Load it */
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return RosSymCreateFromRaw((char *) ImageStart + SectionHeader->VirtualAddress,
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SectionHeader->SizeOfRawData, RosSymInfo);
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}
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/* EOF */
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