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#include <windows.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#define BUFFER_SIZE 4096
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#define MAX_LINE_LENGTH 1024
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typedef struct {
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DWORD attributes;
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FILETIME creationTime;
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FILETIME lastAccessTime;
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FILETIME lastWriteTime;
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DWORD fileSizeHigh;
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DWORD fileSizeLow;
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} FileAttributes;
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void splitString(const char* str, char*** lines, int* lineCount) {
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*lineCount = 0;
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*lines = NULL;
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const char* start = str;
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const char* current = str;
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while (*current) {
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if (*current == '\r' || *current == '\n') {
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size_t length = current - start;
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if (length > 0) {
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*lines = realloc(*lines, (*lineCount + 1) * sizeof(char*));
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(*lines)[*lineCount] = malloc(length + 1);
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strncpy((*lines)[*lineCount], start, length);
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(*lines)[*lineCount][length] = '\0';
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(*lineCount)++;
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}
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if (*current == '\r' && *(current + 1) == '\n') {
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current++;
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}
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start = current + 1;
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}
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current++;
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}
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size_t remaining = current - start;
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if (remaining > 0) {
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*lines = realloc(*lines, (*lineCount + 1) * sizeof(char*));
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(*lines)[*lineCount] = malloc(remaining + 1);
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strncpy((*lines)[*lineCount], start, remaining);
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(*lines)[*lineCount][remaining] = '\0';
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(*lineCount)++;
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}
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}
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void freeLines(char** lines, int lineCount) {
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for (int i = 0; i < lineCount; i++) {
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free(lines[i]);
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}
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free(lines);
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}
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char* fileTimeToString(const FILETIME* ft) {
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if (ft->dwLowDateTime == 0 && ft->dwHighDateTime == 0) {
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return strdup("N/A");
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}
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SYSTEMTIME st;
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FileTimeToSystemTime(ft, &st);
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char* buffer = malloc(64);
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snprintf(buffer, 64, "%02d.%02d.%04d %02d:%02d:%02d",
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st.wDay, st.wMonth, st.wYear,
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st.wHour, st.wMinute, st.wSecond);
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return buffer;
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}
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char* attributesToString(DWORD attrs) {
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if (attrs == INVALID_FILE_ATTRIBUTES) {
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return strdup("Invalid attributes");
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}
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char* result = calloc(256, 1);
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int first = 1;
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#define ADD_ATTR(attr, name) \
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if (attrs & attr) { \
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if (!first) strcat(result, ", "); \
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strcat(result, name); \
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first = 0; \
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}
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ADD_ATTR(FILE_ATTRIBUTE_ARCHIVE, "Archive");
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ADD_ATTR(FILE_ATTRIBUTE_COMPRESSED, "Compressed");
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ADD_ATTR(FILE_ATTRIBUTE_DIRECTORY, "Directory");
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ADD_ATTR(FILE_ATTRIBUTE_ENCRYPTED, "Encrypted");
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ADD_ATTR(FILE_ATTRIBUTE_HIDDEN, "Hidden");
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ADD_ATTR(FILE_ATTRIBUTE_NORMAL, "Normal");
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ADD_ATTR(FILE_ATTRIBUTE_OFFLINE, "Offline");
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ADD_ATTR(FILE_ATTRIBUTE_READONLY, "Readonly");
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ADD_ATTR(FILE_ATTRIBUTE_SYSTEM, "System");
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ADD_ATTR(FILE_ATTRIBUTE_TEMPORARY, "Temporary");
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#undef ADD_ATTR
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return result;
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}
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FileAttributes getFileAttributesWin(const char* filePath) {
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FileAttributes attrs = {0};
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WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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if (GetFileAttributesExA(filePath, GetFileExInfoStandard, &fileInfo)) {
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attrs.attributes = fileInfo.dwFileAttributes;
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attrs.creationTime = fileInfo.ftCreationTime;
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attrs.lastAccessTime = fileInfo.ftLastAccessTime;
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attrs.lastWriteTime = fileInfo.ftLastWriteTime;
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attrs.fileSizeHigh = fileInfo.nFileSizeHigh;
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attrs.fileSizeLow = fileInfo.nFileSizeLow;
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} else {
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attrs.attributes = INVALID_FILE_ATTRIBUTES;
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}
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return attrs;
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}
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void runChildProcess(const char* handleStr) {
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printf("Child process started.\n");
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HANDLE hFile = (HANDLE)(INT_PTR)atoll(handleStr);
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char buffer[BUFFER_SIZE];
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DWORD bytesRead;
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char* totalData = calloc(1, 1);
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size_t totalSize = 0;
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while (ReadFile(hFile, buffer, sizeof(buffer), &bytesRead, NULL) && bytesRead > 0) {
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totalData = realloc(totalData, totalSize + bytesRead + 1);
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memcpy(totalData + totalSize, buffer, bytesRead);
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totalSize += bytesRead;
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totalData[totalSize] = '\0';
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}
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CloseHandle(hFile);
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char** lines = NULL;
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int lineCount = 0;
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splitString(totalData, &lines, &lineCount);
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free(totalData);
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for (int i = 0; i < lineCount; i++) {
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if (strlen(lines[i]) == 0) continue;
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FileAttributes attrs = getFileAttributesWin(lines[i]);
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ULONGLONG fileSize = ((ULONGLONG)attrs.fileSizeHigh << 32) | attrs.fileSizeLow;
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char* attrStr = attributesToString(attrs.attributes);
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char* createdStr = fileTimeToString(&attrs.creationTime);
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char* accessedStr = fileTimeToString(&attrs.lastAccessTime);
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char* modifiedStr = fileTimeToString(&attrs.lastWriteTime);
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printf("\nFile: %s\n", lines[i]);
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printf("Attributes: %s\n", attrStr);
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printf("Size: %llu bytes\n", fileSize);
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printf("Created: %s\n", createdStr);
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printf("Last accessed: %s\n", accessedStr);
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printf("Last modified: %s\n", modifiedStr);
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free(attrStr);
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free(createdStr);
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free(accessedStr);
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free(modifiedStr);
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}
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freeLines(lines, lineCount);
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}
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void runParentProcess() {
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printf("Parent process started.\n");
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SECURITY_ATTRIBUTES sa = {0};
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sa.nLength = sizeof(SECURITY_ATTRIBUTES);
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sa.bInheritHandle = FALSE;
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HANDLE hFile = CreateFileA(
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"test.txt",
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GENERIC_READ,
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FILE_SHARE_READ,
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&sa,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL,
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NULL
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);
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if (hFile == INVALID_HANDLE_VALUE) {
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fprintf(stderr, "Error opening file. Error: %lu\n", GetLastError());
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return;
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}
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if (!SetHandleInformation(hFile, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT)) {
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fprintf(stderr, "Failed to set handle inheritance. Error: %lu\n", GetLastError());
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CloseHandle(hFile);
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return;
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}
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char cmdLine[256];
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snprintf(cmdLine, sizeof(cmdLine), "%s child %lld", GetCommandLineA(), (long long)(INT_PTR)hFile);
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STARTUPINFOA si = {0};
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si.cb = sizeof(si);
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PROCESS_INFORMATION pi = {0};
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if (!CreateProcessA(
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NULL,
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cmdLine,
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NULL,
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NULL,
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TRUE,
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0,
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NULL,
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NULL,
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&si,
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&pi)) {
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fprintf(stderr, "Error creating child process. Error: %lu\n", GetLastError());
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CloseHandle(hFile);
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return;
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}
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CloseHandle(pi.hProcess);
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CloseHandle(pi.hThread);
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CloseHandle(hFile);
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}
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int main(int argc, char* argv[]) {
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if (argc == 1) {
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runParentProcess();
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} else if (argc == 3 && strcmp(argv[1], "child") == 0) {
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runChildProcess(argv[2]);
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} else {
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fprintf(stderr, "Invalid arguments.\n");
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return 1;
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}
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return 0;
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}
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