laantungir/otp
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 30 Wiki Activity

Version v0.3.15 - Change temp pad location to final destination for the pad

Browse Source
This commit is contained in:
Laan Tungir
2025-09-27 10:03:20 -04:00
parent 1582c88be5
commit f87b2dbd8f
3 changed files with 9 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

BIN
otp-arm64
View File

Binary file not shown.

BIN
otp-x86_64
View File

Binary file not shown.

46
otp.c
View File

@@ -405,7 +405,7 @@ int interactive_mode(void) {
void show_main_menu(void) {
printf("\n");
print_centered_header("Main Menu - OTP v0.3.13", 0);
print_centered_header("Main Menu - OTP v0.3.14", 0);
printf("\n");
printf(" \033[4mT\033[0mext encrypt\n"); //TEXT ENCRYPT
@@ -860,13 +860,13 @@ int generate_pad(uint64_t size_bytes, int display_progress) {
return 1;
}
char temp_filename[64];
char temp_filename[1024];
char pad_path[MAX_HASH_LENGTH + 20];
char state_path[MAX_HASH_LENGTH + 20];
char chksum_hex[MAX_HASH_LENGTH];
// Create temporary filename
snprintf(temp_filename, sizeof(temp_filename), "temp_%ld.pad", time(NULL));
// Create temporary filename in the pads directory to avoid cross-filesystem issues
snprintf(temp_filename, sizeof(temp_filename), "%s/temp_%ld.pad", current_pads_dir, time(NULL));
FILE* urandom = fopen("/dev/urandom", "rb");
if (!urandom) {
@@ -936,39 +936,11 @@ int generate_pad(uint64_t size_bytes, int display_progress) {
// Get final paths in pads directory
get_pad_path(chksum_hex, pad_path, state_path);
// Try rename first (works for same filesystem)
// Rename temporary file to final name (atomic operation within same directory)
if (rename(temp_filename, pad_path) != 0) {
// If rename fails, try copy and delete (works across filesystems)
FILE* temp_file = fopen(temp_filename, "rb");
FILE* dest_file = fopen(pad_path, "wb");
if (!temp_file || !dest_file) {
printf("Error: Cannot copy pad file to pads directory\n");
if (temp_file) fclose(temp_file);
if (dest_file) fclose(dest_file);
unlink(temp_filename);
return 1;
}
// Copy file in chunks
unsigned char copy_buffer[64 * 1024];
size_t bytes_read;
while ((bytes_read = fread(copy_buffer, 1, sizeof(copy_buffer), temp_file)) > 0) {
if (fwrite(copy_buffer, 1, bytes_read, dest_file) != bytes_read) {
printf("Error: Failed to copy pad file to pads directory\n");
fclose(temp_file);
fclose(dest_file);
unlink(temp_filename);
unlink(pad_path);
return 1;
}
}
fclose(temp_file);
fclose(dest_file);
// Remove temporary file after successful copy
printf("Error: Cannot rename temporary pad file to final name\n");
unlink(temp_filename);
return 1;
}
// Set pad file to read-only
@@ -3825,7 +3797,7 @@ int generate_ascii_armor(const char* chksum, uint64_t offset, const unsigned cha
strcpy(*ascii_output, "-----BEGIN OTP MESSAGE-----\n");
char temp_line[256];
snprintf(temp_line, sizeof(temp_line), "Version: v0.3.13\n");
snprintf(temp_line, sizeof(temp_line), "Version: v0.3.14\n");
strcat(*ascii_output, temp_line);
snprintf(temp_line, sizeof(temp_line), "Pad-ChkSum: %s\n", chksum);
@@ -5567,7 +5539,7 @@ int handle_delete_pad(const char* pad_chksum) {
void print_usage(const char* program_name) {
printf("OTP Cipher - One Time Pad Implementation v0.3.13\n");
printf("OTP Cipher - One Time Pad Implementation v0.3.14\n");
printf("Built for testing entropy system\n");
printf("Usage:\n");
printf(" %s - Interactive mode\n", program_name);