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7 Commits

15 changed files with 110 additions and 34 deletions

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files/out2.otp Normal file

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files/output.otp Normal file

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files/test_decrypt.txt Normal file
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@@ -0,0 +1 @@
Test file content for decryption

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files/test_decrypt.txt.otp Normal file

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files/test_file.txt Normal file
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@@ -0,0 +1 @@
Hello, this is a test file for encryption!

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files/test_input.txt Normal file
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This is a test file for encryption.

139
otp.c
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@@ -40,6 +40,7 @@ static const int base64_decode_table[256] = {
#define MAX_HASH_LENGTH 65
#define PROGRESS_UPDATE_INTERVAL (64 * 1024 * 1024) // 64MB intervals
#define PADS_DIR "pads"
#define FILES_DIR "files"
#define MAX_ENTROPY_BUFFER 32768 // 32KB entropy buffer
// Function prototypes
@@ -72,7 +73,10 @@ void simple_entropy_mix(unsigned char* urandom_buffer, size_t buffer_size,
// Directory management
int ensure_pads_directory(void);
int ensure_files_directory(void);
void get_pad_path(const char* chksum, char* pad_path, char* state_path);
const char* get_files_directory(void);
void get_default_file_path(const char* filename, char* result_path, size_t result_size);
// Utility functions
uint64_t parse_size_string(const char* size_str);
@@ -271,14 +275,14 @@ int command_line_mode(int argc, char* argv[]) {
}
void show_main_menu(void) {
printf("=== Main Menu ===\n\n");
printf("\033[4mT\033[0mext encrypt\n");
printf("\033[4mF\033[0mile encrypt\n");
printf("\033[4mD\033[0mecrypt\n");
printf("\033[4mG\033[0menerate new pad\n");
printf("\033[4mL\033[0mist available pads\n");
printf("\033[4mS\033[0mhow pad information\n");
printf("E\033[4mx\033[0mit\n");
printf("======================== Main Menu ========================\n");
printf(" \033[4mT\033[0mext encrypt\n");
printf(" \033[4mF\033[0mile encrypt\n");
printf(" \033[4mD\033[0mecrypt\n");
printf(" \033[4mG\033[0menerate new pad\n");
printf(" \033[4mL\033[0mist available pads\n");
printf(" \033[4mS\033[0mhow pad information\n");
printf(" E\033[4mx\033[0mit\n");
printf("\nSelect option: ");
}
@@ -332,8 +336,8 @@ int handle_encrypt_menu(void) {
// Ask user to choose between text and file encryption
printf("\nSelect encryption type:\n");
printf("1. Text message\n");
printf("2. File\n");
printf(" 1. Text message\n");
printf(" 2. File\n");
printf("Enter choice (1-2): ");
char choice_input[10];
@@ -347,9 +351,9 @@ int handle_encrypt_menu(void) {
if (choice == 1) {
// Text encryption
printf("\nPad selection options:\n");
printf("1. Select from numbered list\n");
printf("2. Enter checksum/prefix manually\n");
printf("3. Browse pad files\n");
printf(" 1. Select from numbered list\n");
printf(" 2. Enter checksum/prefix manually\n");
printf(" 3. Browse pad files\n");
printf("Enter choice (1-3): ");
char pad_choice[10];
@@ -400,8 +404,8 @@ int handle_encrypt_menu(void) {
else if (choice == 2) {
// File encryption
printf("\nFile selection options:\n");
printf("1. Type file path directly\n");
printf("2. Use file manager\n");
printf(" 1. Type file path directly\n");
printf(" 2. Use file manager\n");
printf("Enter choice (1-2): ");
char file_choice[10];
@@ -449,8 +453,8 @@ int handle_encrypt_menu(void) {
// Ask for output format
printf("\nSelect output format:\n");
printf("1. Binary (.otp) - preserves file permissions\n");
printf("2. ASCII (.otp.asc) - text-safe format\n");
printf(" 1. Binary (.otp) - preserves file permissions\n");
printf(" 2. ASCII (.otp.asc) - text-safe format\n");
printf("Enter choice (1-2): ");
char format_input[10];
@@ -461,16 +465,27 @@ int handle_encrypt_menu(void) {
int ascii_armor = (atoi(format_input) == 2) ? 1 : 0;
// Ask for custom output filename (optional)
printf("\nEnter output filename (or press Enter for default): ");
// Generate default output filename with files directory and use enhanced input function
char default_output[1024]; // Increased size to prevent truncation warnings
char temp_default[1024];
// Generate base filename with appropriate extension
if (ascii_armor) {
snprintf(temp_default, sizeof(temp_default), "%s.otp.asc", input_file);
} else {
snprintf(temp_default, sizeof(temp_default), "%s.otp", input_file);
}
// Apply files directory default path
get_default_file_path(temp_default, default_output, sizeof(default_output));
char output_file[512];
if (!fgets(output_file, sizeof(output_file), stdin)) {
if (get_filename_with_default("Output filename:", default_output, output_file, sizeof(output_file)) != 0) {
printf("Error: Failed to read input\n");
return 1;
}
output_file[strcspn(output_file, "\n")] = 0;
const char* output_filename = (strlen(output_file) > 0) ? output_file : NULL;
const char* output_filename = output_file;
return encrypt_file(pad_input, input_file, output_filename, ascii_armor);
}
@@ -485,8 +500,8 @@ int handle_decrypt_menu(void) {
// Ask user to choose between text/message and file decryption
printf("\nSelect decryption type:\n");
printf("1. Text message (ASCII armored)\n");
printf("2. File (.otp or .otp.asc)\n");
printf(" 1. Text message (ASCII armored)\n");
printf(" 2. File (.otp or .otp.asc)\n");
printf("Enter choice (1-2): ");
char choice_input[10];
@@ -517,16 +532,36 @@ int handle_decrypt_menu(void) {
return 1;
}
// Ask for custom output filename (optional)
printf("\nEnter output filename (or press Enter for default): ");
// Generate smart default output filename with files directory and use enhanced input function
char temp_default[512];
char default_output[512];
strncpy(temp_default, input_file, sizeof(temp_default) - 1);
temp_default[sizeof(temp_default) - 1] = '\0';
// Remove common encrypted extensions to get a better default
if (strstr(temp_default, ".otp.asc")) {
// Replace .otp.asc with original extension or no extension
char* ext_pos = strstr(temp_default, ".otp.asc");
*ext_pos = '\0';
} else if (strstr(temp_default, ".otp")) {
// Replace .otp with original extension or no extension
char* ext_pos = strstr(temp_default, ".otp");
*ext_pos = '\0';
} else {
// No recognized encrypted extension, add .decrypted suffix
strncat(temp_default, ".decrypted", sizeof(temp_default) - strlen(temp_default) - 1);
}
// Apply files directory default path
get_default_file_path(temp_default, default_output, sizeof(default_output));
char output_file[512];
if (!fgets(output_file, sizeof(output_file), stdin)) {
if (get_filename_with_default("Output filename:", default_output, output_file, sizeof(output_file)) != 0) {
printf("Error: Failed to read input\n");
return 1;
}
output_file[strcspn(output_file, "\n")] = 0;
const char* output_filename = (strlen(output_file) > 0) ? output_file : NULL;
const char* output_filename = output_file;
return decrypt_file(input_file, output_filename);
}
@@ -1161,8 +1196,8 @@ int encrypt_text(const char* pad_identifier, const char* input_text) {
} else {
// Get input text from user (interactive mode)
printf("\nText input options:\n");
printf("1. Type text directly\n");
printf("2. Use text editor\n");
printf(" 1. Type text directly\n");
printf(" 2. Use text editor\n");
printf("Enter choice (1-2): ");
char input_choice[10];
@@ -1544,14 +1579,18 @@ int encrypt_file(const char* pad_identifier, const char* input_file, const char*
return 1;
}
// Generate output filename if not specified
// Generate output filename if not specified, using files directory
char default_output[512];
if (output_file == NULL) {
char temp_output[512];
if (ascii_armor) {
snprintf(default_output, sizeof(default_output), "%s.otp.asc", input_file);
snprintf(temp_output, sizeof(temp_output), "%s.otp.asc", input_file);
} else {
snprintf(default_output, sizeof(default_output), "%s.otp", input_file);
snprintf(temp_output, sizeof(temp_output), "%s.otp", input_file);
}
// Apply files directory default path
get_default_file_path(temp_output, default_output, sizeof(default_output));
output_file = default_output;
}
@@ -2208,6 +2247,38 @@ int ensure_pads_directory(void) {
return 0;
}
int ensure_files_directory(void) {
struct stat st = {0};
if (stat(FILES_DIR, &st) == -1) {
if (mkdir(FILES_DIR, 0755) != 0) {
return 1;
}
}
return 0;
}
const char* get_files_directory(void) {
struct stat st = {0};
if (stat(FILES_DIR, &st) == 0 && S_ISDIR(st.st_mode)) {
return FILES_DIR;
}
return "."; // Fall back to current directory
}
void get_default_file_path(const char* filename, char* result_path, size_t result_size) {
const char* files_dir = get_files_directory();
// If filename already has a path (contains '/'), use it as-is
if (strchr(filename, '/') != NULL) {
strncpy(result_path, filename, result_size - 1);
result_path[result_size - 1] = '\0';
return;
}
// Otherwise, prepend the files directory
snprintf(result_path, result_size, "%s/%s", files_dir, filename);
}
void get_pad_path(const char* chksum, char* pad_path, char* state_path) {
snprintf(pad_path, MAX_HASH_LENGTH + 20, "%s/%s.pad", PADS_DIR, chksum);
snprintf(state_path, MAX_HASH_LENGTH + 20, "%s/%s.state", PADS_DIR, chksum);

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test_files_dir.txt Normal file
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Testing updated files directory functionality

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test_new.txt Normal file
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Testing files directory functionality

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test_new.txt.otp Normal file

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