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New gpg-agent command to list key information.

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Gpgsm does now print the S/N of cards.
Consider ephemeral keys during listing an export.
This commit is contained in:
Werner Koch 2009-03-06 17:31:27 +00:00
parent 59d7a54e72
commit a9c317a95c
20 changed files with 601 additions and 180 deletions
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67
agent/protect.c
View file

@ -1,6 +1,6 @@
/* protect.c - Un/Protect a secret key
* Copyright (C) 1998, 1999, 2000, 2001, 2002,
* 2003, 2007 Free Software Foundation, Inc.
* 2003, 2007, 2009 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -1105,3 +1105,68 @@ agent_get_shadow_info (const unsigned char *shadowkey,
return 0;
}
/* Parse the canonical encoded SHADOW_INFO S-expression. On success
the hex encoded serial number is returned as a malloced strings at
R_HEXSN and the Id string as a malloced string at R_IDSTR. On
error an error code is returned and NULL is stored at the result
parameters addresses. If the serial number or the ID string is not
required, NULL may be passed for them. */
gpg_error_t
parse_shadow_info (const unsigned char *shadow_info,
char **r_hexsn, char **r_idstr)
{
const unsigned char *s;
size_t n;
if (r_hexsn)
*r_hexsn = NULL;
if (r_idstr)
*r_idstr = NULL;
s = shadow_info;
if (*s != '(')
return gpg_error (GPG_ERR_INV_SEXP);
s++;
n = snext (&s);
if (!n)
return gpg_error (GPG_ERR_INV_SEXP);
if (r_hexsn)
{
*r_hexsn = bin2hex (s, n, NULL);
if (!*r_hexsn)
return gpg_error_from_syserror ();
}
s += n;
n = snext (&s);
if (!n)
{
if (r_hexsn)
{
xfree (*r_hexsn);
*r_hexsn = NULL;
}
return gpg_error (GPG_ERR_INV_SEXP);
}
if (r_idstr)
{
*r_idstr = xtrymalloc (n+1);
if (!*r_idstr)
{
if (r_hexsn)
{
xfree (*r_hexsn);
*r_hexsn = NULL;
}
return gpg_error_from_syserror ();
}
memcpy (*r_idstr, s, n);
(*r_idstr)[n] = 0;
}
return 0;
}