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/***
This file is part of LockPassword
Copyright (C) 2020-2021 Aleksandr D. Goncharov (Joursoir) <chat@joursoir.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
***/
#include <stdio.h>
#include <stdlib.h>
#include <libgen.h>
#include <unistd.h>
#include <termios.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <sys/stat.h>
#include "routines.h"
#include "constants.h"
#include "easydir.h"
#include "r-gpgme.h"
#if defined(DISPLAY)
#include "r-x11.h"
#endif
#include "output.h"
#define NUMBER_ALLOWED_CHARS (10+26+26+8)
int copy_outside(char *password)
{
#if defined(DISPLAY)
int pid;
pid = fork();
if(pid == -1) {
print_error("Error: X11 fork() failed\n");
return 1;
}
if(pid == 0) /* new process */
exit(run_clipboard(password));
return 0;
#else
if(getenv("WAYLAND_DISPLAY") != NULL) {
char * const wl_copy[] = {"wl-copy", password, NULL};
int pid;
pid = fork();
if(pid == -1) {
print_error("Error: Wayland fork() failed\n");
return 1;
}
if(pid == 0) { /* new process */
execvp("wl-copy", wl_copy);
perror("wl-copy");
exit(1);
}
return 0;
}
print_error("Error: You didn't have x11 or wayland when app builded\n");
return 1;
#endif
}
int check_sneaky_paths(const char *path)
{
int length = strlen(path), i;
for(i = 1; i < length; i++)
{
if(path[i-1] == '.' && path[i] == '.') {
print_error("Error: A double dot is found in the path.\n");
return 1;
}
}
return 0;
}
char *get_pubkey()
{
char *pubkey;
FILE *fileGPG = fopen(".gpg-key", "r");
if(fileGPG == NULL) {
if(errno == ENOENT)
print_error("Error: No GPG key exists. Use \"lpass init\"\n");
else
print_error("Error: %s\n", strerror(errno));
return NULL;
}
pubkey = malloc(sizeof(char) * (maxlen_fingerprint + 1));
if (!pubkey) {
print_error("Unable to allocate space for the public key.\n");
fclose(fileGPG);
return NULL;
}
if(fgets(pubkey, maxlen_fingerprint + 1, fileGPG) == NULL) {
print_error("Error: %s\n", strerror(errno));
free(pubkey);
pubkey = NULL;
}
fclose(fileGPG);
return pubkey;
}
char *get_password(const char *path)
{
return decrypt_data(path);
}
void visible_enter(int status)
{
struct termios term_settings;
tcgetattr(0, &term_settings); // get current settings
if(status == 1)
term_settings.c_lflag |= ECHO;
else
term_settings.c_lflag &= ~ECHO;
tcsetattr(0, TCSANOW, &term_settings);
}
static void mkdir_recursive(const char *path)
{
char *subpath, *fullpath;
fullpath = strdup(path);
subpath = dirname(fullpath);
if(subpath[0] != '.')
mkdir_recursive(subpath);
mkdir(path, S_IRWXU);
free(fullpath);
}
int insert_pass(const char *path, const char *password)
{
char *public_gpgkey = get_pubkey();
if(public_gpgkey == NULL)
return 1;
// create directories
char *tmp, *dirs_path;
tmp = strdup(path);
dirs_path = dirname(tmp);
if(dirs_path[0] != '.')
mkdir_recursive(dirs_path);
free(tmp);
int ret = ecnrypt_data(path, password, public_gpgkey);
free(public_gpgkey);
return ret;
}
char *get_input(int minlen, int maxlen)
{
int len;
char *pass = malloc(sizeof(char) * (maxlen + 1));
if (!pass) {
print_error("Unable to allocate space for the password.\n");
return NULL;
}
if(fgets(pass, maxlen + 1, stdin) == NULL) {
print_error("Error: %s\n", strerror(errno));
free(pass);
return NULL;
}
len = strlen(pass);
if(len < minlen) {
free(pass);
return NULL;
}
if(pass[len-1] == '\n')
pass[len-1] = '\0';
return pass;
}
char *gen_password(int length)
{
int i;
char allowed_chars[NUMBER_ALLOWED_CHARS] =
"abcdefghijklmnoqprstuvwyzx"
"ABCDEFGHIJKLMNOQPRSTUYWVZX"
"0123456789"
"!@#$^&*?";
char *password = malloc(sizeof(char) * (length + 1));
if (!password) {
print_error("Unable to allocate space for the password.\n");
return NULL;
}
srand(time(NULL));
for(i = 0; i < length; i++)
password[i] = allowed_chars[rand() % NUMBER_ALLOWED_CHARS];
password[i] = '\0';
return password;
}
static void clear_stdin()
{
int garbage;
while( (garbage = fgetc(stdin)) != '\n' && garbage != EOF )
;
}
int overwrite_answer(const char *path)
{
int answer;
printf("Password for \"%s\" exists. Overwrite? (Y/N)\n", path);
while((answer = fgetc(stdin)))
{
clear_stdin();
switch(answer)
{
case 'Y':
case 'y': return 'y';
case 'N':
case 'n':
case EOF: return 'n';
default: {
printf("Overwrite? (Y/N) ");
break;
}
}
}
return 'n';
}
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