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Use dedicated simple password retriever for size of future crypto disks modules and simplify entering passwords routines

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-12-06 20:11:50 +01:00
parent c0a6bd447e
commit b391bdb2f2
7 changed files with 71 additions and 46 deletions
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46
lib/crypto.c
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@ -20,6 +20,7 @@
#include <grub/crypto.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/term.h>
struct grub_crypto_hmac_handle
{
@ -372,10 +373,10 @@ grub_crypto_gcry_error (gcry_err_code_t in)
}
int
grub_crypto_memcmp (void *a, void *b, grub_size_t n)
grub_crypto_memcmp (const void *a, const void *b, grub_size_t n)
{
register grub_size_t counter = 0;
grub_uint8_t *pa, *pb;
const grub_uint8_t *pa, *pb;
for (pa = a, pb = b; n; pa++, pb++, n--)
{
@ -385,3 +386,44 @@ grub_crypto_memcmp (void *a, void *b, grub_size_t n)
return !!counter;
}
#ifndef GRUB_MKPASSWD
int
grub_password_get (char buf[], unsigned buf_size)
{
unsigned cur_len = 0;
int key;
while (1)
{
key = GRUB_TERM_ASCII_CHAR (grub_getkey ());
if (key == '\n' || key == '\r')
break;
if (key == '\e')
{
cur_len = 0;
break;
}
if (key == '\b')
{
cur_len--;
continue;
}
if (!grub_isprint (key))
continue;
if (cur_len + 2 < buf_size)
buf[cur_len++] = key;
}
grub_memset (buf + cur_len, 0, buf_size - cur_len);
grub_putchar ('\n');
grub_refresh ();
return (key != '\e');
}
#endif