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sm: New option --ignore-cert-with-oid.

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* sm/gpgsm.c (oIgnoreCertWithOID): New.
(opts): Add option.
(main): Store its value.
* sm/call-agent.c (learn_cb): Test against that list.
This commit is contained in:
Werner Koch 2022-02-03 14:14:14 +01:00
parent b2cedc108d
commit e23dc755fa
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 54 additions and 0 deletions
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34
sm/call-agent.c
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@ -1032,6 +1032,8 @@ learn_cb (void *opaque, const void *buffer, size_t length)
char *buf;
ksba_cert_t cert;
int rc;
char *string, *p, *pend;
strlist_t sl;
if (parm->error)
return 0;
@ -1068,6 +1070,35 @@ learn_cb (void *opaque, const void *buffer, size_t length)
return 0;
}
/* Ignore certificates matching certain extended usage flags. */
rc = ksba_cert_get_ext_key_usages (cert, &string);
if (!rc)
{
p = string;
while (p && (pend=strchr (p, ':')))
{
*pend++ = 0;
for (sl=opt.ignore_cert_with_oid;
sl && strcmp (sl->d, p); sl = sl->next)
;
if (sl)
{
if (opt.verbose)
log_info ("certificate ignored due to OID %s\n", sl->d);
goto leave;
}
p = pend;
if ((p = strchr (p, '\n')))
p++;
}
}
else if (gpg_err_code (rc) != GPG_ERR_NO_DATA)
log_error (_("error getting key usage information: %s\n"),
gpg_strerror (rc));
xfree (string);
string = NULL;
/* We do not store a certifciate with missing issuers as ephemeral
because we can assume that the --learn-card command has been used
on purpose. */
@ -1088,6 +1119,9 @@ learn_cb (void *opaque, const void *buffer, size_t length)
}
}
leave:
xfree (string);
string = NULL;
ksba_cert_release (cert);
init_membuf (parm->data, 4096);
return 0;