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upstream: if a PKCS#11 token returns no keys then try to login and

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refetch them. Based on patch from Jakub Jelen; bz#2430 ok markus@

OpenBSD-Commit-ID: ab53bd6ddd54dd09e54a8bfbed1a984496f08b43
This commit is contained in:
djm@openbsd.org 2019-09-05 10:05:51 +00:00 committed by Damien Miller
parent 76f09bd959
commit 7d6034bd02
1 changed files with 33 additions and 11 deletions
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44
ssh-pkcs11.c
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@ -1,4 +1,4 @@
/* $OpenBSD: ssh-pkcs11.c,v 1.44 2019/09/02 00:19:25 djm Exp $ */ /* $OpenBSD: ssh-pkcs11.c,v 1.45 2019/09/05 10:05:51 djm Exp $ */
/* /*
* Copyright (c) 2010 Markus Friedl. All rights reserved. * Copyright (c) 2010 Markus Friedl. All rights reserved.
* Copyright (c) 2014 Pedro Martelletto. All rights reserved. * Copyright (c) 2014 Pedro Martelletto. All rights reserved.
@ -240,21 +240,17 @@ pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr,
} }
static int static int
pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type) pkcs11_login_slot(struct pkcs11_provider *provider, struct pkcs11_slotinfo *si,
CK_USER_TYPE type)
{ {
struct pkcs11_slotinfo *si;
CK_FUNCTION_LIST *f;
char *pin = NULL, prompt[1024]; char *pin = NULL, prompt[1024];
CK_RV rv; CK_RV rv;
if (!k11->provider || !k11->provider->valid) { if (provider == NULL || si == NULL || !provider->valid) {
error("no pkcs11 (valid) provider found"); error("no pkcs11 (valid) provider found");
return (-1); return (-1);
} }
f = k11->provider->function_list;
si = &k11->provider->slotinfo[k11->slotidx];
if (!pkcs11_interactive) { if (!pkcs11_interactive) {
error("need pin entry%s", error("need pin entry%s",
(si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) ? (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) ?
@ -271,7 +267,7 @@ pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
return (-1); /* bail out */ return (-1); /* bail out */
} }
} }
rv = f->C_Login(si->session, type, (u_char *)pin, rv = provider->function_list->C_Login(si->session, type, (u_char *)pin,
(pin != NULL) ? strlen(pin) : 0); (pin != NULL) ? strlen(pin) : 0);
if (pin != NULL) if (pin != NULL)
freezero(pin, strlen(pin)); freezero(pin, strlen(pin));
@ -283,6 +279,19 @@ pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
return (0); return (0);
} }
static int
pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
{
if (k11 == NULL || k11->provider == NULL || !k11->provider->valid) {
error("no pkcs11 (valid) provider found");
return (-1);
}
return pkcs11_login_slot(k11->provider,
&k11->provider->slotinfo[k11->slotidx], type);
}
static int static int
pkcs11_check_obj_bool_attrib(struct pkcs11_key *k11, CK_OBJECT_HANDLE obj, pkcs11_check_obj_bool_attrib(struct pkcs11_key *k11, CK_OBJECT_HANDLE obj,
CK_ATTRIBUTE_TYPE type, int *val) CK_ATTRIBUTE_TYPE type, int *val)
@ -1565,9 +1574,22 @@ pkcs11_register_provider(char *provider_id, char *pin, struct sshkey ***keyp,
* open session, login with pin and retrieve public * open session, login with pin and retrieve public
* keys (if keyp is provided) * keys (if keyp is provided)
*/ */
if ((ret = pkcs11_open_session(p, i, pin, user)) == 0) { if ((ret = pkcs11_open_session(p, i, pin, user)) != 0 ||
if (keyp == NULL) keyp == NULL)
continue;
pkcs11_fetch_keys(p, i, keyp, &nkeys);
pkcs11_fetch_certs(p, i, keyp, &nkeys);
if (nkeys == 0 && !p->slotinfo[i].logged_in &&
pkcs11_interactive) {
/*
* Some tokens require login before they will
* expose keys.
*/
if (pkcs11_login_slot(p, &p->slotinfo[i],
CKU_USER) < 0) {
error("login failed");
continue; continue;
}
pkcs11_fetch_keys(p, i, keyp, &nkeys); pkcs11_fetch_keys(p, i, keyp, &nkeys);
pkcs11_fetch_certs(p, i, keyp, &nkeys); pkcs11_fetch_certs(p, i, keyp, &nkeys);
} }