87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
#include "dynmem.h"
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#include <sys/stat.h>
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// Reads a file and stores it in a buffer (automatically opens, reads and closes the file)
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//@warning "readl" only reads the first line! Possible side effects may include slow performance if done multiple times
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//@param filepath Path to the file
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//@param buffer Buffer to store the file
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//@param size Size parameter specifies the number of bytes to read
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int readl(const char *filepath, void *buffer, size_t size)
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{
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int fd;
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#ifdef _WIN32
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fd = _open(filepath, _O_RDONLY | _O_BINARY); // Open file in binary mode
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#else
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fd = open(filepath, O_RDONLY); // Files are opened in binary mode by default on Unix-like systems
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#endif
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if (fd == -1)
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{
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return fd;
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}
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size_t bytesRead = read(fd, buffer, size);
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if (bytesRead == -1)
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{
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return bytesRead;
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}
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#ifdef _WIN32
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_close(fd);
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#else
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close(fd);
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#endif
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return 1;
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}
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// Writes a buffer to a file (automatically opens, writes and closes the file)
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//@warning "writel" only writes to the first line! Possible side effects may include slow performance if done multiple times
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//@param filepath Path to the file
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//@param buffer Buffer to write to the file
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//@param size Size parameter specifies the number of bytes to write
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void writel(const char *filepath, void *buffer, size_t size)
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{
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int fd;
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#ifdef _WIN32
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fd = _open(filepath, _O_WRONLY | _O_CREAT | _O_TRUNC | _O_BINARY, _S_IREAD | _S_IWRITE); // Open file in binary mode
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#else
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fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); // Files are opened in binary mode by default on Unix-like systems
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#endif
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if (fd == -1)
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{
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fprintf(stderr, "Failed to open file %s\n", filepath);
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return;
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}
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size_t bytesWritten = write(fd, buffer, size);
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if (bytesWritten == -1)
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{
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fprintf(stderr, "Failed to write to file %s\n", filepath);
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}
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#ifdef _WIN32
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_close(fd);
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#else
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close(fd);
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#endif
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}
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void encryptText(int *output, char *password)
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{
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for (int i = 0; i < 256; i++)
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{
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output[i] = (int)password[i];
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output[i] ^= 0xFF; // Invert bitwise all characters in the password
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output[i] = output[i] * 2;
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}
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}
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void decryptText(char *output, int *password)
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{
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for (int i = 0; i < 256; i++)
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{
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int temp = password[i] / 2;
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output[i] = (char)(temp ^ 0xFF); // Reverse the XOR and division operations
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}
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}
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