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Code Activity

agent: pksign result conversion to sexp to upper layer.

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* agent/agent.h (divert_pksign): Add R_SIGLEN argument.
* agent/divert-scd.c (divert_pksign): Return length at R_SIGLEN.
* agent/call-scd.c (agent_card_pksign): Move composition of
S-expression to...
* agent/pksign.c (agent_pksign_do): ... here.
--

Composing S-expression would be better to be done by SCDaemon.
This commit is contained in:
NIIBE Yutaka 2013-02-28 11:17:47 +09:00
parent 585d5c62ee
commit ef1983d58b
4 changed files with 97 additions and 35 deletions
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29
agent/call-scd.c
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@ -825,10 +825,6 @@ agent_card_pksign (ctrl_t ctrl,
char *p, line[ASSUAN_LINELENGTH];
membuf_t data;
struct inq_needpin_s inqparm;
size_t len;
unsigned char *sigbuf;
size_t sigbuflen;
int prepend_nul;
*r_buf = NULL;
rc = start_scd (ctrl);
@ -868,32 +864,13 @@ agent_card_pksign (ctrl_t ctrl,
if (rc)
{
size_t len;
xfree (get_membuf (&data, &len));
return unlock_scd (ctrl, rc);
}
sigbuf = get_membuf (&data, &sigbuflen);
/* Create an S-expression from it which is formatted like this:
"(7:sig-val(3:rsa(1:sSIGBUFLEN:SIGBUF)))". We better make sure
that this won't be interpreted as a negative number. */
prepend_nul = (sigbuflen && (*sigbuf & 0x80));
*r_buflen = 21 + 11 + prepend_nul + sigbuflen + 4;
p = xtrymalloc (*r_buflen);
*r_buf = (unsigned char*)p;
if (!p)
return unlock_scd (ctrl, out_of_core ());
p = stpcpy (p, "(7:sig-val(3:rsa(1:s" );
sprintf (p, "%u:", (unsigned int)sigbuflen + prepend_nul);
p += strlen (p);
if (prepend_nul)
*p++ = 0;
memcpy (p, sigbuf, sigbuflen);
p += sigbuflen;
strcpy (p, ")))");
xfree (sigbuf);
assert (gcry_sexp_canon_len (*r_buf, *r_buflen, NULL, NULL));
*r_buf = get_membuf (&data, r_buflen);
return unlock_scd (ctrl, 0);
}