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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include <string.h>
#include <time.h>
#include <sys/wait.h>
#include <errno.h>
#include "handerror.h"
#include "easydir.h"
// == global var ==
extern char *gPath_rootdir;
extern char *gSecret_gpgkey;
char* getPassword(char *path, char *password, int maxlen)
{
// gpg
int pid = fork();
if(pid == 1) callError(126);
if(pid == 0) {
execlp("gpg", "-d", "--quiet", "-r", gSecret_gpgkey, "-o", "gap", path, NULL);
perror("gpg");
exit(4);
}
wait(&pid);
FILE *filePass = fopen("gap", "r");
if(filePass == NULL) callError(127);
char sign[maxlen];
if(!fgets(sign, sizeof(sign), filePass)) {
callError(111);
}
strcpy(password, sign);
fclose(filePass);
remove("gap");
return password;
}
void nonvisibleEnter(int status)
{
struct termios term_settings;
tcgetattr(0, &term_settings); // get current settings
if(status == 1) {
term_settings.c_lflag &= ~ECHO; // flag reset
}
else {
term_settings.c_lflag |= ECHO;
}
tcsetattr(0, TCSANOW, &term_settings);
}
void insertPass(char *add_path, char *password)
{
/* gPath_rootdir = /home/[username]/.lock-password/Password-Storage/
add_path = banks/france/[number]
main_path = banks/france
file_path = [number] */
char *main_path = malloc( sizeof(char) * (strlen(add_path)+1) );
char *file_path = malloc( sizeof(char) * (strlen(add_path)+1) );
if(splitPath(add_path, main_path, file_path) == NULL) {
printError("lpass: The path you specified is incorrect\n");
}
int pass_buf = strlen(gPath_rootdir) + strlen(add_path) + 1;
char *final_path = (char*) malloc(sizeof(char) * pass_buf);
strcpy(final_path, gPath_rootdir);
strcat(final_path, main_path);
if(strcmp(main_path, "") != 0) {
int pid = fork();
if(pid == -1) callError(103);
if(pid == 0) { /* new process */
execlp("mkdir", "mkdir", "-p", main_path, NULL);
perror("mkdir");
exit(4);
}
wait(&pid);
}
if(chdir(final_path) != 0) {
callError(107);
}
// create file, copy password there
FILE *filePass;
filePass = fopen(file_path, "w");
if(filePass == NULL) {
callError(108);
}
fputs(password, filePass);
fclose(filePass);
// gpg
int pid = fork();
if(pid == 1) callError(225);
if(pid == 0) {
execlp("gpg", "-a", "-r", gSecret_gpgkey, "-e", file_path, NULL);
perror("gpg");
exit(4);
}
wait(&pid);
remove(file_path);
free(main_path);
free(file_path);
}
char *typePass(char *text, char *dest, int minlen, int maxlen)
{
printf("%s", text);
if(fgets(dest, sizeof(char)*maxlen, stdin) == NULL) {
nonvisibleEnter(0);
printError("lpass: Unexpected end of file\n");
}
int len = strlen(dest);
if(len < minlen || len > maxlen) {
nonvisibleEnter(0);
printError("lpass: incorrect password\n");
}
if(dest[len-1] == '\n') {
dest[len-1] = '\0';
}
#if defined(DEBUG)
printf("%s", dest);
#endif
printf("\n"); // for new line
return dest;
}
int userEnterPassword(int minlen, int maxlen, char *path_insert)
{
char *pass_one = (char *) malloc(sizeof(char) * maxlen);
char *pass_two = (char *) malloc(sizeof(char) * maxlen);
nonvisibleEnter(1); // change terminal work
typePass("Please type your new password: ", pass_one, minlen, maxlen);
typePass("Please type your new password again: ", pass_two, minlen, maxlen);
nonvisibleEnter(0);
int rvalue = 0;
if(strcmp(pass_one, pass_two) == 0) {
insertPass(path_insert, pass_one);
rvalue = 1;
}
free(pass_one);
free(pass_two);
return rvalue;
}
char *generatePassword(char *dest, int amount, int max_len)
{
char allowed_symbols[] = {
'A','E','I','J','O','U','B','C','D','F','G','H',
'K','L','M','N','P','Q','R','S','T','V','W','X',
'Y','Z','a','e','i','j','o','u','b','c','d','f',
'g','h','k','l','m','n','p','q','r','s','t','v',
'w','x','y','z','1','2','3','4','5','6','7','8',
'9','0','!','#','$',';','%','^',':','&','?','*',
'(',')','-','_','+','=','<', '>'
};
int max = sizeof(allowed_symbols);
srand(time(NULL));
char password[max_len];
for(int i=0; i < amount; i++)
{
char c = allowed_symbols[rand() % max];
password[i] = c;
password[i+1] = '\0';
}
strcpy(dest, password);
return dest;
}
unsigned long hash(char *str)
{
unsigned long hash = 5381;
char c;
while( (c = *str++) )
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
return hash;
}
static void clearStdinBuff()
{
char garbage;
while( (garbage = fgetc(stdin)) != '\n' && garbage != EOF )
;
}
int getAnswer(char *text)
{
char answer;
printf("%s\n", text);
while( (answer = fgetc(stdin)) )
{
clearStdinBuff();
switch(answer)
{
case 'Y':
case 'y':
return 1;
case 'N':
case 'n':
return 0;
case EOF:
printError("lpass: Unexpected end of file\n");
default: {
printf("%s\n", text);
break;
}
}
}
return -1;
}
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