/* CS697L Assignment 1 */
/* User Account Creation */
/* Martian A. Smyth */
/* 2/97 */

#define SSN "SSN.DAT"
#define LIST_SUFFIX ".users.conf"
#define PASSWD_SUFFIX ".passwd"
#define BASE_HOME "/home/"
#define DEFAULT_SHELL "/bin/csh"
#define LOWEST_UID 500

typedef struct userinfo
{
  char ssn[10];
  char first[16];
  char middle[16];
  char last[16];
} USERINFO;

typedef struct ssndata
{
  char uid[9];
  char ssn[10];
  char name[33];
  char expdate[12];
  char extensions[51];
} SSNDATA;

void stripnl(char *s);
void process_user(char *input);
USERINFO parse_input(char *input);
int parse_fields(char **fields, char *input, char *delim, int max_fields);
char *stripchars(char *s, const char *remove);
SSNDATA find_ssn(char *ssn);
SSNDATA parse_ssndata(char *input);
struct passwd build_pwd(USERINFO info);
char *generate_name(USERINFO info);
char *generate_password(USERINFO info);
uid_t generate_uid();
char *make_lower(char *s);
char *cryptpass(char *passwd);
void add_ssn(SSNDATA ssn);