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Problem with mask password.

mcosta@... Posted: Tue Jul 29, 2003 6:37 pm

Joined: 29 Jul 2003

Posts: 1

Problem with mask password.

Hi everyone !

I have problem with getchar function to mask password that will be typed by
user.
How can I mask password leaving cursor just waiting `` caracter (like
Unix/Linux mode). Because with the function that I wrote appear the letter what
I typed. My function don`t mask my own password. My function appear my own
password on screen.

I am using gcc compiler ( I don`t know what version, because is integrated with
another toolkit).
I could use getch() function, but I don`t have CONIO.H library, because I am
compiling with GCC.

Somebody can help me with this problem ?! How can I use getchar function to
work correct mode ?

Here is the code (putting `*` instead the real password):

char *getPassword(char *prompt)
{
char buffer[128]; /* where will be stored the real password */
int i=0;
int letter;

printf(prompt);

while ((i < 127) && (letter != ` `))
{
letter = getchar();

/*_bios_keybrd */
if (letter == BACKSPACE)
{
if (i > 0)
{
buffer[--i] = NULL; /* Delete previews pointer `*` */
putchar(BACKSPACE);
putchar(` `);
putchar(BACKSPACE);
}
else
putchar(7); /* Warning sound */
}
else if (letter != ` `)
{
buffer[i++] = letter;
putchar(`*`); /* Change the real password by `*` */
}
if (letter = ``)
break;
}
buffer[i] = NULL;

return buffer;

}

[]`s Murilo

` ` `
( O O )
+----------------oOO--(_)--OOo---------------------+
|"Learn from yesterday, live for today, hope for |
| tomorrow. The important thing is to not stop |
| questioning" --Albert Einstein |
| |
|"Choice. The problem is choice" --Neo(The Matrix) |
+--------------------------------------------------+

shantanu_k06 Posted: Tue Jul 29, 2003 11:23 pm

Joined: 19 Jul 2003

Posts: 29

Problem with mask password.

Hi Murilo,

If you are using GCC under GNU/Linux, there`s always a
package library called N-CURSES (short for "New
Curses"). It has getch() function just the way you
have it in conio.h in TC++3.0/DOS. Run "man curses"
from terminal if you need help. If you don`t have the
package already, get the source and compile it.

The header file for N-CURSES is curses.h so include it
and work the same way you wanted to do with conio.h.

Hope that helps.

Regards,
Shantanu

--- Murilo Regis da Costa <mcosta@...> wrote:
> Hi everyone !
>
> I have problem with getchar function to mask
> password that will be typed by user.
> How can I mask password leaving cursor just waiting
> `` caracter (like Unix/Linux mode). Because with
> the function that I wrote appear the letter what I
> typed. My function don`t mask my own password. My
> function appear my own password on screen.
>
> I am using gcc compiler ( I don`t know what
> version, because is integrated with another
> toolkit).
> I could use getch() function, but I don`t have
> CONIO.H library, because I am compiling with GCC.
>
> Somebody can help me with this problem ?! How can I
> use getchar function to work correct mode ?
>
> Here is the code (putting `*` instead the real
> password):
>
> char *getPassword(char *prompt)
> {
> char buffer[128]; /* where will be stored the
> real password */
> int i=0;
> int letter;
>
> printf(prompt);
>
> while ((i < 127) && (letter != ` `))
> {
> letter = getchar();
>
>
> /*_bios_keybrd */
> if (letter == BACKSPACE)
> {
> if (i > 0)
> {
> buffer[--i] = NULL; /* Delete previews
> pointer `*` */
> putchar(BACKSPACE);
> putchar(` `);
> putchar(BACKSPACE);
> }
> else
> putchar(7); /* Warning sound */
> }
> else if (letter != ` `)
> {
> buffer[i++] = letter;
> putchar(`*`); /* Change the real
> password by `*` */
> }
> if (letter = ``)
> break;
> }
> buffer[i] = NULL;
>
>
> return buffer;
>
> }
>
> []`s Murilo
>
> ` ` `
> ( O O )
> +----------------oOO--(_)--OOo---------------------+
> |"Learn from yesterday, live for today, hope for |
> | tomorrow. The important thing is to not stop |
> | questioning" --Albert Einstein |
> | |
> |"Choice. The problem is choice" --Neo(The Matrix) |
> +--------------------------------------------------+
>
>
> ------------------------ Yahoo! Groups Sponsor
>
> Keep posting
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>

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