linux下提取ole中的嵌入文件的库c/c++
时间: 2024-02-05 11:12:03 浏览: 35
可以使用libole2库来提取OLE中的嵌入文件。libole2是一个开源的库,用于操作OLE2格式的文件,包括Microsoft Office文件和COM结构化存储对象。
以下是提取OLE中嵌入文件的示例C代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ole2.h>
int main(int argc, char *argv[]) {
HRESULT hr;
LPWSTR wszPath = NULL;
LPSTR szPath = NULL;
LPWSTR wszFile = NULL;
LPSTR szFile = NULL;
LPWSTR wszClsid = NULL;
LPSTR szClsid = NULL;
LPSTORAGE pStg = NULL;
LPENUMSTATSTG pEnumStg = NULL;
STATSTG statstg;
LPSTREAM pStream = NULL;
DWORD dwMode = STGM_READ | STGM_SHARE_EXCLUSIVE;
if (argc != 2) {
fprintf(stderr, "Usage: %s OLE_FILE\n", argv[0]);
return 1;
}
wszPath = (LPWSTR) malloc((strlen(argv[1]) + 1) * sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, argv[1], -1, wszPath, strlen(argv[1]) + 1);
hr = StgOpenStorage(wszPath, NULL, dwMode, NULL, 0, &pStg);
if (FAILED(hr)) {
fprintf(stderr, "Failed to open OLE file: 0x%x\n", hr);
goto Cleanup;
}
hr = pStg->lpVtbl->EnumElements(pStg, 0, NULL, 0, &pEnumStg);
if (FAILED(hr)) {
fprintf(stderr, "Failed to enumerate elements: 0x%x\n", hr);
goto Cleanup;
}
while (S_OK == pEnumStg->lpVtbl->Next(pEnumStg, 1, &statstg, NULL)) {
wszFile = (LPWSTR) malloc((wcslen(statstg.pwcsName) + 1) * sizeof(WCHAR));
wcscpy(wszFile, statstg.pwcsName);
szFile = (LPSTR) malloc((wcslen(wszFile) + 1) * sizeof(CHAR));
WideCharToMultiByte(CP_ACP, 0, wszFile, -1, szFile, wcslen(wszFile) + 1, NULL, NULL);
wszClsid = (LPWSTR) malloc(40 * sizeof(WCHAR));
StringFromGUID2(&statstg.clsid, wszClsid, 40);
szClsid = (LPSTR) malloc((wcslen(wszClsid) + 1) * sizeof(CHAR));
WideCharToMultiByte(CP_ACP, 0, wszClsid, -1, szClsid, wcslen(wszClsid) + 1, NULL, NULL);
printf("File: %s, Class ID: %s\n", szFile, szClsid);
if (statstg.type == STGTY_STREAM) {
hr = pStg->lpVtbl->OpenStream(pStg, wszFile, NULL, dwMode, 0, &pStream);
if (FAILED(hr)) {
fprintf(stderr, "Failed to open stream: 0x%x\n", hr);
goto Cleanup;
}
// TODO: Read from pStream to extract data
pStream->lpVtbl->Release(pStream);
}
CoTaskMemFree(statstg.pwcsName);
free(wszFile);
free(szFile);
free(wszClsid);
free(szClsid);
}
Cleanup:
if (pEnumStg) pEnumStg->lpVtbl->Release(pEnumStg);
if (pStg) pStg->lpVtbl->Release(pStg);
if (wszPath) free(wszPath);
if (szPath) free(szPath);
return 0;
}
```
这段代码首先打开OLE文件,然后枚举它的元素。对于每个元素,它会输出文件名和类ID,如果元素是流,则打开流并从中提取数据。
注意:这段代码并没有提供完整的OLE文件提取功能,你需要根据自己的需求修改代码。