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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
sm/call-agent.c
View file

@ -1,6 +1,6 @@
/* call-agent.c - Divert GPGSM operations to the agent
* Copyright (C) 2001, 2002, 2003, 2005, 2007,
* 2008 Free Software Foundation, Inc.
* 2008, 2009 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -836,3 +836,68 @@ gpgsm_agent_send_nop (ctrl_t ctrl)
}
static int
keyinfo_status_cb (void *opaque, const char *line)
{
char **serialno = opaque;
const char *s, *s2;
if (!strncmp (line, "KEYINFO ", 8) && !*serialno)
{
s = strchr (line+8, ' ');
if (s && s[1] == 'T' && s[2] == ' ' && s[3])
{
s += 3;
s2 = strchr (s, ' ');
if ( s2 > s )
{
*serialno = xtrymalloc ((s2 - s)+1);
if (*serialno)
{
memcpy (*serialno, s, s2 - s);
(*serialno)[s2 - s] = 0;
}
}
}
}
return 0;
}
/* Return the serial number for a secret key. If the returned serial
number is NULL, the key is not stored on a smartcard. Caller needs
to free R_SERIALNO. */
gpg_error_t
gpgsm_agent_keyinfo (ctrl_t ctrl, const char *hexkeygrip, char **r_serialno)
{
gpg_error_t err;
char line[ASSUAN_LINELENGTH];
char *serialno = NULL;
*r_serialno = NULL;
err = start_agent (ctrl);
if (err)
return err;
if (!hexkeygrip || strlen (hexkeygrip) != 40)
return gpg_error (GPG_ERR_INV_VALUE);
snprintf (line, DIM(line)-1, "KEYINFO %s", hexkeygrip);
line[DIM(line)-1] = 0;
err = assuan_transact (agent_ctx, line, NULL, NULL, NULL, NULL,
keyinfo_status_cb, &serialno);
if (!err && serialno)
{
/* Sanity check for bad characters. */
if (strpbrk (serialno, ":\n\r"))
err = GPG_ERR_INV_VALUE;
}
if (err)
xfree (serialno);
else
*r_serialno = serialno;
return err;
}