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* findkey.c (agent_key_available): New.

Browse Source 
* command.c (cmd_havekey): New.
(register_commands): And register new command.
This commit is contained in:
Werner Koch 2002-01-29 10:05:05 +00:00
parent fc8d8e9987
commit 2d1d9d928c
4 changed files with 60 additions and 3 deletions
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6
agent/ChangeLog
View File

@ -1,3 +1,9 @@
2002-01-29 Werner Koch <wk@gnupg.org>
* findkey.c (agent_key_available): New.
* command.c (cmd_havekey): New.
(register_commands): And register new command.
2002-01-20 Werner Koch <wk@gnupg.org>
* command.c (cmd_get_passphrase): Remove the plus signs.

1
agent/agent.h
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@ -94,6 +94,7 @@ void start_command_handler (int);
/*-- findkey.c --*/
GCRY_SEXP agent_key_from_file (const unsigned char *grip);
int agent_key_available (const unsigned char *grip);
/*-- query.c --*/
int agent_askpin (const char *desc_text, struct pin_entry_info_s *pininfo);

32
agent/command.c
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@ -120,6 +120,37 @@ cmd_marktrusted (ASSUAN_CONTEXT ctx, char *line)
/* HAVEKEY <hexstring_with_keygrip>
Return success when the secret key is available */
static int
cmd_havekey (ASSUAN_CONTEXT ctx, char *line)
{
int n;
char *p;
unsigned char buf[20];
/* parse the hash value */
for (p=line,n=0; hexdigitp (p); p++, n++)
;
if (*p)
return set_error (Parameter_Error, "invalid hexstring");
if ((n&1))
return set_error (Parameter_Error, "odd number of digits");
n /= 2;
if (n != 20)
return set_error (Parameter_Error, "invalid length of keygrip");
for (p=line, n=0; n < 20; p += 2, n++)
buf[n] = xtoi_2 (p);
if (agent_key_available (buf))
return ASSUAN_No_Secret_Key;
return 0;
}
/* SIGKEY <hexstring_with_keygrip>
SETKEY <hexstring_with_keygrip>
@ -414,6 +445,7 @@ register_commands (ASSUAN_CONTEXT ctx)
int (*handler)(ASSUAN_CONTEXT, char *line);
} table[] = {
{ "ISTRUSTED", 0, cmd_istrusted },
{ "HAVEKEY", 0, cmd_havekey },
{ "SIGKEY", 0, cmd_sigkey },
{ "SETKEY", 0, cmd_sigkey },
{ "SETHASH", 0, cmd_sethash },

24
agent/findkey.c
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@ -55,9 +55,8 @@ unprotect (GCRY_SEXP s_skey)
/* Return the secret key as an S-Exp after locating it using the grip. Returns NULL if key is not available. */
/* Return the secret key as an S-Exp after locating it using the grip.
Returns NULL if key is not available. */
GCRY_SEXP
agent_key_from_file (const unsigned char *grip)
{
@ -125,5 +124,24 @@ agent_key_from_file (const unsigned char *grip)
return s_skey;
}
/* Return the secret key as an S-Exp after locating it using the grip.
Returns NULL if key is not available. 0 = key is available */
int
agent_key_available (const unsigned char *grip)
{
int i;
char *fname;
char hexgrip[41];
for (i=0; i < 20; i++)
sprintf (hexgrip+2*i, "%02X", grip[i]);
hexgrip[40] = 0;
fname = make_filename (opt.homedir, "private-keys-v1.d", hexgrip, NULL );
i = !access (fname, R_OK)? 0 : -1;
xfree (fname);
return i;
}