An account (username & password) protect clients' data for the warehouse system, with different commands.
username: Elsayed
password: 1234
client_addclient_deletlist_dclear_clogout
- account (username & password) protected.
- store data into encrypted files.
- multiple command option.
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/*****************************************************************************
* check_user: checking credential, username & password. *
* return user_check; *
*****************************************************************************/
int check_user (void)
{
if (user_check == 0)
{
printf("\n------------------------------------------\n");
printf("checking credential required...\n");
A:
printf("Enter user name: ");
scanf(" %[^\n]%*c", entered_user);
CHECK_U(entered_user)
printf("Enter password: ");
scanf(" %[^\n]%*c", entered_pass);
CHECK_U(entered_pass)
for(int i = 0; entered_user[i] != '\0'; i++)
{
if (entered_user[i] != user_1[i])
{
printf("incorrect user name or password!\n\n");
goto A;
}
}
for(int i = 0; entered_pass[i] != '\0'; i++)
{
if (entered_pass[i] != pass_1[i])
{
printf("incorrect user name or password!\n\n");
goto A;
}
}
printf("access granted...\n");
printf("welcome Mr.%s\n", user_1);
user_check = 1;
}
else
user_check = 1;
return user_check;
}/*****************************************************************************
* assess: return list: 0-> wrong command. *
* 1-> clear(cls). *
* n-> new client(n|N). *
* x-> exit(exit|EXIT). *
* l-> list(lst). *
* h-> help(h|H). *
*****************************************************************************/
int assess (char *c)
{
int i=0;
char *p = c;
while (*p++ != '\0'){
i++;
if (*p == ' ')
{
printf("\'%s\' is not recognized as an internal or external command!\n\n", p-i);
return 0;
}
}
switch (c[0]){
// 1. cls: clear.
case 'c':
for(int i=1; i<=3; i++)
{
if ("cls\0"[i] != c[i])
{
printf("\'%s\' is not recognized as an internal or external command!\n\n", c);
return 0;
}
}
return 1;
// 2. n&N: new client.
case 'n': case 'N':
return 'n';
// 3. exit: exit program.
case 'e': case 'E':
for(int i=1; i<=4; i++)
{
if ("exit\0"[i] != c[i])
{
printf("\'%s\' is not recognized as an internal or external command!\n\n", c);
return 0;
}
}
return 'x';
// 4. lst: list all client.
case 'l': case 'L':
for(int i=1; i<=3; i++)
{
if ("lst\0"[i] != c[i])
{
printf("\'%s\' is not recognized as an internal or external command!\n\n", c);
return 'l';
}
}
return 'l';
// 5. d&D: delete client.
case 'd': case 'D':
return 'd';
// 6. h|H: help.
case 'h': case 'H':
return 'h';
// 7. out: logout user.
case 'o':
for(int i=1; i<=3; i++)
{
if ("user\0"[i] != c[i])
{
printf("\'%s\' is not recognized as an internal or external command!\n\n", c);
return 'l';
}
}
return 'o';
// wrong command.
default:
printf("\'%s\' is not recognized as an internal or external command!\n\n", c);
return 0;
}
return 0xff;
}#ifndef FUN_H
#define FUN_H
#define CHECK_U(elemint) for(int i=0; i<=7; i++) \
{ \
if ("cancel\0"[i] != elemint[i]) \
break; \
else if (i == 7) \
return user_check; \
}
/*****************************************************************************
* scan_f: *
* *
*****************************************************************************/
int scan_f (char *c);
/*****************************************************************************
* assess: return list: 0-> wrong command. *
* 1-> clear(cls). *
* n-> new client(n|N). *
* x-> exit(exit|EXIT). *
* l-> list(lst). *
* h-> help(h|H). *
*****************************************************************************/
int assess (char *c);
/*****************************************************************************
* check_user: *
* *
*****************************************************************************/
int check_user (void);
#endif // FUN_HContributions are always welcome!
Distributed under the no License. See LICENSE.txt for more information.
Elsayed Atif Aner - facebook
Project Link: Warehouse-Secure-System
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