// pages
int read_summary_page()
{
int sum = 0;
int bytes_read = 0;
char header1 = read_bytes(1, &bytes_read, &sum); // Always 0x10
char header2 = read_bytes(1, &bytes_read, &sum); // Always 0x02
uint16_t command = read_bytes(2, &bytes_read, &sum);
if (header1 == 0x10 && header2 == 0x02 && command == 0x2022)
{
uint16_t length = read_bytes(2, &bytes_read, &sum);
uint16_t page_number = read_bytes(2, &bytes_read, &sum); // Page #
if (page_number == 0) {
// Page #0
if (jouleGPS) {
read_ride_summary(&bytes_read, &sum);
read_interval_summary(&bytes_read, &sum);
read_username(&bytes_read, &sum);
read_user_info_record(&bytes_read, &sum);
read_ant_info_record(&bytes_read, &sum);
} else {
read_ride_summary(&bytes_read, &sum);
// page still contains 47 interval_summary
}
int finish = length+6-bytes_read;
for (int i = 0; i < finish; i++) {
read_bytes(1, &bytes_read, &sum); // to finish
}
read_bytes(1, &bytes_read, &sum); // checksum
} else {
if (page_number == 1 && !jouleGPS) {
//page still contains 48 interval_summary
int finish = length+6-bytes_read;
for (int i = 0; i < finish; i++) {
read_bytes(1, &bytes_read, &sum); // to finish
}
read_bytes(1, &bytes_read, &sum); // checksum
}
// not a summary page !
}
}
return bytes_read;
}
int main(int argc, char **argv)
{
char username[USERNAME_SIZE];
/*
* Write "login: "******"\nFound no user with name: %s\n", username);
return 0;
}
}
int read_userpwd(char *username){
struct pwdb_passwd *pw_entry;
pw_entry = pwdb_getpwnam(username);
char *password;
char salt[2];
strncpy(salt, pw_entry->pw_passwd, 2);
password = getpass("password: "******"user name could not be found.\n");
}else if(pwdb_errno==PWDB_FILEERR){
printf("could not access the file.\n");}
else if(pwdb_errno==PWDB_MEMERR){
printf("could not allocate memory for the struct pwdb_passwd.\n");}
else if(pwdb_errno==PWDB_ENTRERR){
printf("line in PWFILENAME somehow has invalid format.\n");
}return(0);
}else{*/
if(strcmp(crypt(password, salt), pw_entry-> pw_passwd)==0){
printf("User authenticated successfully. \n");
pw_entry->pw_failed = 0;
pw_entry->pw_age++;
pwdb_update_user(pw_entry);
if(pw_entry->pw_age>=10){
printf("WOOPS, time to change PW. \n");
}
return(1);
}else{
if(pw_entry->pw_failed>=5){
printf("User locked. \n");
}
pw_entry->pw_failed++;
pwdb_update_user(pw_entry);
printf("Unknown user or incorrect password. \n");
read_username(username);
return(0);
}
}
void login () {
char username[USERNAME_SIZE];
int logged_in = 0;
while (!logged_in) {
read_username(username);
struct pwdb_passwd *p = pwdb_getpwnam(username);
if (p == NULL) {
printf("\nFound no user with name: %s\n", username);
} else {
char *passwd = crypt(getpass("password: "******"\nUser authenticated successfully\n");
logged_in = 1;
} else {
printf("\nUnknown user or incorrect password.\n");
}
}
}
}
int login(struct pwdb_passwd *info){
char username[USERNAME_SIZE];
char password[PASSWORD_SIZE];
/*
* Write "login: "******"Locked out!\n");
return 1;
}
read_password(password);
if (was_interrupted) return 1;
char *crypted = crypt(password, info->pw_passwd);
if (strncmp(info->pw_passwd, crypted, HASH_SIZE) == 0){
login_success(info);
printf("Logged in!\n");
return 0;
}
else {
login_failed(info);
printf("No!\n");
return 1;
}
}
int main(int argc,char **argv) {
char username[USERNAME_SIZE];
int count = 0;
/* write "login:"******"\nFound no user with name: %s\n",username);
return(0);
}
return(0);
}
int main(int argc, char **argv)
{
char username[USERNAME_SIZE];
char *password; // We store in heap, remember to free the memory.
char salt[SALT_SIZE];
struct pwdb_passwd *p;
// Disable CTRL-C termination
signal(SIGINT, SIG_IGN);
/*
* Write "login: "******"Unsuccessful login.");
return 0;
}
/*
* Write "password: "******"password: "******"This account has been locked, please contact an administrator.\n");
} else if (strcmp(password, p->pw_passwd) == 0) {
printf("Successful login.\n");
printf("Previous failed logins: %d\n", p->pw_failed);
if (p->pw_age > 10)
printf("Your password is old, please consider changing it.\n");
write_pw(PW_AGE, p->pw_age + 1, p);
write_pw(PW_FAILED, 0, p);
start_userterm(p);
} else {
printf("Unsuccessful login.\n");
write_pw(PW_FAILED, p->pw_failed + 1, p);
if (PW_FAILED > 5)
write_pw(PW_FAILED, -1, p);
}
memset(password, '0', strlen(password));
return 0;
}
