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heimdal/lib/hx509/ks_p11.c
Nicolas Williams e84bcc29d3 hx509: Flags are unsigned
2021-12-18 11:34:12 +11:00

1231 lines
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/*
* Copyright (c) 2004 - 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "hx_locl.h"
#ifdef HAVE_DLOPEN
#include "ref/pkcs11.h"
struct p11_slot {
uint64_t flags;
#define P11_SESSION 1
#define P11_SESSION_IN_USE 2
#define P11_LOGIN_REQ 4
#define P11_LOGIN_DONE 8
#define P11_TOKEN_PRESENT 16
CK_SESSION_HANDLE session;
CK_SLOT_ID id;
CK_BBOOL token;
char *name;
hx509_certs certs;
char *pin;
struct {
CK_MECHANISM_TYPE_PTR list;
CK_ULONG num;
CK_MECHANISM_INFO_PTR *infos;
} mechs;
};
struct p11_module {
void *dl_handle;
CK_FUNCTION_LIST_PTR funcs;
CK_ULONG num_slots;
unsigned int ref;
unsigned int selected_slot;
struct p11_slot *slot;
};
#define P11FUNC(module,f,args) (*(module)->funcs->C_##f)args
static int p11_get_session(hx509_context,
struct p11_module *,
struct p11_slot *,
hx509_lock,
CK_SESSION_HANDLE *);
static int p11_put_session(struct p11_module *,
struct p11_slot *,
CK_SESSION_HANDLE);
static void p11_release_module(struct p11_module *);
static int p11_list_keys(hx509_context,
struct p11_module *,
struct p11_slot *,
CK_SESSION_HANDLE,
hx509_lock,
hx509_certs *);
/*
*
*/
struct p11_rsa {
struct p11_module *p;
struct p11_slot *slot;
CK_OBJECT_HANDLE private_key;
CK_OBJECT_HANDLE public_key;
};
static int
p11_rsa_public_encrypt(int flen,
const unsigned char *from,
unsigned char *to,
RSA *rsa,
int padding)
{
return -1;
}
static int
p11_rsa_public_decrypt(int flen,
const unsigned char *from,
unsigned char *to,
RSA *rsa,
int padding)
{
return -1;
}
static int
p11_rsa_private_encrypt(int flen,
const unsigned char *from,
unsigned char *to,
RSA *rsa,
int padding)
{
struct p11_rsa *p11rsa = RSA_get_app_data(rsa);
CK_OBJECT_HANDLE key = p11rsa->private_key;
CK_SESSION_HANDLE session;
CK_MECHANISM mechanism;
CK_ULONG ck_sigsize;
int ret;
if (padding != RSA_PKCS1_PADDING)
return -1;
memset(&mechanism, 0, sizeof(mechanism));
mechanism.mechanism = CKM_RSA_PKCS;
ck_sigsize = RSA_size(rsa);
ret = p11_get_session(NULL, p11rsa->p, p11rsa->slot, NULL, &session);
if (ret)
return -1;
ret = P11FUNC(p11rsa->p, SignInit, (session, &mechanism, key));
if (ret != CKR_OK) {
p11_put_session(p11rsa->p, p11rsa->slot, session);
return -1;
}
ret = P11FUNC(p11rsa->p, Sign,
(session, (CK_BYTE *)(intptr_t)from, flen, to, &ck_sigsize));
p11_put_session(p11rsa->p, p11rsa->slot, session);
if (ret != CKR_OK)
return -1;
return ck_sigsize;
}
static int
p11_rsa_private_decrypt(int flen, const unsigned char *from, unsigned char *to,
RSA * rsa, int padding)
{
struct p11_rsa *p11rsa = RSA_get_app_data(rsa);
CK_OBJECT_HANDLE key = p11rsa->private_key;
CK_SESSION_HANDLE session;
CK_MECHANISM mechanism;
CK_ULONG ck_sigsize;
int ret;
if (padding != RSA_PKCS1_PADDING)
return -1;
memset(&mechanism, 0, sizeof(mechanism));
mechanism.mechanism = CKM_RSA_PKCS;
ck_sigsize = RSA_size(rsa);
ret = p11_get_session(NULL, p11rsa->p, p11rsa->slot, NULL, &session);
if (ret)
return -1;
ret = P11FUNC(p11rsa->p, DecryptInit, (session, &mechanism, key));
if (ret != CKR_OK) {
p11_put_session(p11rsa->p, p11rsa->slot, session);
return -1;
}
ret = P11FUNC(p11rsa->p, Decrypt,
(session, (CK_BYTE *)(intptr_t)from, flen, to, &ck_sigsize));
p11_put_session(p11rsa->p, p11rsa->slot, session);
if (ret != CKR_OK)
return -1;
return ck_sigsize;
}
static int
p11_rsa_init(RSA *rsa)
{
return 1;
}
static int
p11_rsa_finish(RSA *rsa)
{
struct p11_rsa *p11rsa = RSA_get_app_data(rsa);
p11_release_module(p11rsa->p);
free(p11rsa);
return 1;
}
static const RSA_METHOD p11_rsa_pkcs1_method = {
"hx509 PKCS11 PKCS#1 RSA",
p11_rsa_public_encrypt,
p11_rsa_public_decrypt,
p11_rsa_private_encrypt,
p11_rsa_private_decrypt,
NULL,
NULL,
p11_rsa_init,
p11_rsa_finish,
0,
NULL,
NULL,
NULL,
NULL
};
/*
*
*/
static int
p11_mech_info(hx509_context context,
struct p11_module *p,
struct p11_slot *slot,
int num)
{
CK_ULONG i;
int ret;
ret = P11FUNC(p, GetMechanismList, (slot->id, NULL_PTR, &i));
if (ret) {
hx509_set_error_string(context, 0, HX509_PKCS11_NO_MECH,
"Failed to get mech list count for slot %d",
num);
return HX509_PKCS11_NO_MECH;
}
if (i == 0) {
hx509_set_error_string(context, 0, HX509_PKCS11_NO_MECH,
"no mech supported for slot %d", num);
return HX509_PKCS11_NO_MECH;
}
slot->mechs.list = calloc(i, sizeof(slot->mechs.list[0]));
if (slot->mechs.list == NULL) {
hx509_set_error_string(context, 0, ENOMEM,
"out of memory");
return ENOMEM;
}
slot->mechs.num = i;
ret = P11FUNC(p, GetMechanismList, (slot->id, slot->mechs.list, &i));
if (ret) {
hx509_set_error_string(context, 0, HX509_PKCS11_NO_MECH,
"Failed to get mech list for slot %d",
num);
return HX509_PKCS11_NO_MECH;
}
assert(i == slot->mechs.num);
slot->mechs.infos = calloc(i, sizeof(*slot->mechs.infos));
if (slot->mechs.list == NULL) {
hx509_set_error_string(context, 0, ENOMEM,
"out of memory");
return ENOMEM;
}
for (i = 0; i < slot->mechs.num; i++) {
slot->mechs.infos[i] = calloc(1, sizeof(*(slot->mechs.infos[0])));
if (slot->mechs.infos[i] == NULL) {
hx509_set_error_string(context, 0, ENOMEM,
"out of memory");
return ENOMEM;
}
ret = P11FUNC(p, GetMechanismInfo, (slot->id, slot->mechs.list[i],
slot->mechs.infos[i]));
if (ret) {
hx509_set_error_string(context, 0, HX509_PKCS11_NO_MECH,
"Failed to get mech info for slot %d",
num);
return HX509_PKCS11_NO_MECH;
}
}
return 0;
}
static int
p11_init_slot(hx509_context context,
struct p11_module *p,
hx509_lock lock,
CK_SLOT_ID id,
int num,
struct p11_slot *slot)
{
CK_SESSION_HANDLE session;
CK_SLOT_INFO slot_info;
CK_TOKEN_INFO token_info;
size_t i;
int ret;
slot->certs = NULL;
slot->id = id;
ret = P11FUNC(p, GetSlotInfo, (slot->id, &slot_info));
if (ret) {
hx509_set_error_string(context, 0, HX509_PKCS11_TOKEN_CONFUSED,
"Failed to init PKCS11 slot %d",
num);
return HX509_PKCS11_TOKEN_CONFUSED;
}
for (i = sizeof(slot_info.slotDescription) - 1; i > 0; i--) {
char c = slot_info.slotDescription[i];
if (c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\0')
continue;
i++;
break;
}
ret = asprintf(&slot->name, "%.*s", (int)i,
slot_info.slotDescription);
if (ret == -1)
return ENOMEM;
if ((slot_info.flags & CKF_TOKEN_PRESENT) == 0)
return 0;
ret = P11FUNC(p, GetTokenInfo, (slot->id, &token_info));
if (ret) {
hx509_set_error_string(context, 0, HX509_PKCS11_NO_TOKEN,
"Failed to init PKCS11 slot %d "
"with error 0x%08x",
num, ret);
return HX509_PKCS11_NO_TOKEN;
}
slot->flags |= P11_TOKEN_PRESENT;
if (token_info.flags & CKF_LOGIN_REQUIRED)
slot->flags |= P11_LOGIN_REQ;
ret = p11_get_session(context, p, slot, lock, &session);
if (ret)
return ret;
ret = p11_mech_info(context, p, slot, num);
if (ret)
goto out;
ret = p11_list_keys(context, p, slot, session, lock, &slot->certs);
out:
p11_put_session(p, slot, session);
return ret;
}
static int
p11_get_session(hx509_context context,
struct p11_module *p,
struct p11_slot *slot,
hx509_lock lock,
CK_SESSION_HANDLE *psession)
{
CK_RV ret;
if (slot->flags & P11_SESSION_IN_USE)
_hx509_abort("slot already in session");
if (slot->flags & P11_SESSION) {
slot->flags |= P11_SESSION_IN_USE;
*psession = slot->session;
return 0;
}
ret = P11FUNC(p, OpenSession, (slot->id,
CKF_SERIAL_SESSION,
NULL,
NULL,
&slot->session));
if (ret != CKR_OK) {
if (context)
hx509_set_error_string(context, 0, HX509_PKCS11_OPEN_SESSION,
"Failed to OpenSession for slot id %d "
"with error: 0x%08x",
(int)slot->id, ret);
return HX509_PKCS11_OPEN_SESSION;
}
slot->flags |= P11_SESSION;
/*
* If we have have to login, and haven't tried before and have a
* prompter or known to work pin code.
*
* This code is very conversative and only uses the prompter in
* the hx509_lock, the reason is that it's bad to try many
* passwords on a pkcs11 token, it might lock up and have to be
* unlocked by a administrator.
*
* XXX try harder to not use pin several times on the same card.
*/
if ( (slot->flags & P11_LOGIN_REQ)
&& (slot->flags & P11_LOGIN_DONE) == 0
&& (lock || slot->pin))
{
hx509_prompt prompt;
char pin[20];
char *str;
if (slot->pin == NULL) {
memset(&prompt, 0, sizeof(prompt));
ret = asprintf(&str, "PIN code for %s: ", slot->name);
if (ret == -1 || str == NULL) {
if (context)
hx509_set_error_string(context, 0, ENOMEM, "out of memory");
return ENOMEM;
}
prompt.prompt = str;
prompt.type = HX509_PROMPT_TYPE_PASSWORD;
prompt.reply.data = pin;
prompt.reply.length = sizeof(pin);
ret = hx509_lock_prompt(lock, &prompt);
if (ret) {
free(str);
if (context)
hx509_set_error_string(context, 0, ret,
"Failed to get pin code for slot "
"id %d with error: %d",
(int)slot->id, ret);
return ret;
}
free(str);
} else {
strlcpy(pin, slot->pin, sizeof(pin));
}
ret = P11FUNC(p, Login, (slot->session, CKU_USER,
(unsigned char*)pin, strlen(pin)));
if (ret != CKR_OK) {
if (context)
hx509_set_error_string(context, 0, HX509_PKCS11_LOGIN,
"Failed to login on slot id %d "
"with error: 0x%08x",
(int)slot->id, ret);
switch(ret) {
case CKR_PIN_LOCKED:
return HX509_PKCS11_PIN_LOCKED;
case CKR_PIN_EXPIRED:
return HX509_PKCS11_PIN_EXPIRED;
case CKR_PIN_INCORRECT:
return HX509_PKCS11_PIN_INCORRECT;
case CKR_USER_PIN_NOT_INITIALIZED:
return HX509_PKCS11_PIN_NOT_INITIALIZED;
default:
return HX509_PKCS11_LOGIN;
}
} else
slot->flags |= P11_LOGIN_DONE;
if (slot->pin == NULL) {
slot->pin = strdup(pin);
if (slot->pin == NULL) {
if (context)
hx509_set_error_string(context, 0, ENOMEM,
"out of memory");
return ENOMEM;
}
}
} else
slot->flags |= P11_LOGIN_DONE;
slot->flags |= P11_SESSION_IN_USE;
*psession = slot->session;
return 0;
}
static int
p11_put_session(struct p11_module *p,
struct p11_slot *slot,
CK_SESSION_HANDLE session)
{
if ((slot->flags & P11_SESSION_IN_USE) == 0)
_hx509_abort("slot not in session");
slot->flags &= ~P11_SESSION_IN_USE;
return 0;
}
static int
iterate_entries(hx509_context context,
struct p11_module *p, struct p11_slot *slot,
CK_SESSION_HANDLE session,
CK_ATTRIBUTE *search_data, int num_search_data,
CK_ATTRIBUTE *query, int num_query,
int (*func)(hx509_context,
struct p11_module *, struct p11_slot *,
CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object,
void *, CK_ATTRIBUTE *, int), void *ptr)
{
CK_OBJECT_HANDLE object;
CK_ULONG object_count;
int ret, ret2, i;
ret = P11FUNC(p, FindObjectsInit, (session, search_data, num_search_data));
if (ret != CKR_OK) {
return -1;
}
while (1) {
ret = P11FUNC(p, FindObjects, (session, &object, 1, &object_count));
if (ret != CKR_OK) {
return -1;
}
if (object_count == 0)
break;
for (i = 0; i < num_query; i++)
query[i].pValue = NULL;
ret = P11FUNC(p, GetAttributeValue,
(session, object, query, num_query));
if (ret != CKR_OK) {
return -1;
}
for (i = 0; i < num_query; i++) {
query[i].pValue = malloc(query[i].ulValueLen);
if (query[i].pValue == NULL) {
ret = ENOMEM;
goto out;
}
}
ret = P11FUNC(p, GetAttributeValue,
(session, object, query, num_query));
if (ret != CKR_OK) {
ret = -1;
goto out;
}
ret = (*func)(context, p, slot, session, object, ptr, query, num_query);
if (ret)
goto out;
for (i = 0; i < num_query; i++) {
if (query[i].pValue)
free(query[i].pValue);
query[i].pValue = NULL;
}
}
out:
for (i = 0; i < num_query; i++) {
if (query[i].pValue)
free(query[i].pValue);
query[i].pValue = NULL;
}
ret2 = P11FUNC(p, FindObjectsFinal, (session));
if (ret2 != CKR_OK) {
return ret2;
}
return ret;
}
static BIGNUM *
getattr_bn(struct p11_module *p,
struct p11_slot *slot,
CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object,
unsigned int type)
{
CK_ATTRIBUTE query;
BIGNUM *bn;
int ret;
query.type = type;
query.pValue = NULL;
query.ulValueLen = 0;
ret = P11FUNC(p, GetAttributeValue,
(session, object, &query, 1));
if (ret != CKR_OK)
return NULL;
query.pValue = malloc(query.ulValueLen);
ret = P11FUNC(p, GetAttributeValue,
(session, object, &query, 1));
if (ret != CKR_OK) {
free(query.pValue);
return NULL;
}
bn = BN_bin2bn(query.pValue, query.ulValueLen, NULL);
free(query.pValue);
return bn;
}
static int
collect_private_key(hx509_context context,
struct p11_module *p, struct p11_slot *slot,
CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object,
void *ptr, CK_ATTRIBUTE *query, int num_query)
{
struct hx509_collector *collector = ptr;
hx509_private_key key;
heim_octet_string localKeyId;
int ret;
RSA *rsa;
struct p11_rsa *p11rsa;
localKeyId.data = query[0].pValue;
localKeyId.length = query[0].ulValueLen;
ret = hx509_private_key_init(&key, NULL, NULL);
if (ret)
return ret;
rsa = RSA_new();
if (rsa == NULL)
_hx509_abort("out of memory");
/*
* The exponent and modulus should always be present according to
* the pkcs11 specification, but some smartcards leaves it out,
* let ignore any failure to fetch it.
*/
rsa->n = getattr_bn(p, slot, session, object, CKA_MODULUS);
rsa->e = getattr_bn(p, slot, session, object, CKA_PUBLIC_EXPONENT);
p11rsa = calloc(1, sizeof(*p11rsa));
if (p11rsa == NULL)
_hx509_abort("out of memory");
p11rsa->p = p;
p11rsa->slot = slot;
p11rsa->private_key = object;
if (p->ref == 0)
_hx509_abort("pkcs11 ref == 0 on alloc");
p->ref++;
if (p->ref == UINT_MAX)
_hx509_abort("pkcs11 ref == UINT_MAX on alloc");
RSA_set_method(rsa, &p11_rsa_pkcs1_method);
ret = RSA_set_app_data(rsa, p11rsa);
if (ret != 1)
_hx509_abort("RSA_set_app_data");
hx509_private_key_assign_rsa(key, rsa);
ret = _hx509_collector_private_key_add(context,
collector,
hx509_signature_rsa(),
key,
NULL,
&localKeyId);
if (ret) {
hx509_private_key_free(&key);
return ret;
}
return 0;
}
static void
p11_cert_release(hx509_cert cert, void *ctx)
{
struct p11_module *p = ctx;
p11_release_module(p);
}
static int
collect_cert(hx509_context context,
struct p11_module *p, struct p11_slot *slot,
CK_SESSION_HANDLE session,
CK_OBJECT_HANDLE object,
void *ptr, CK_ATTRIBUTE *query, int num_query)
{
struct hx509_collector *collector = ptr;
heim_error_t error = NULL;
hx509_cert cert;
int ret;
if ((CK_LONG)query[0].ulValueLen == -1 ||
(CK_LONG)query[1].ulValueLen == -1)
{
return 0;
}
cert = hx509_cert_init_data(context, query[1].pValue,
query[1].ulValueLen, &error);
if (cert == NULL) {
ret = heim_error_get_code(error);
heim_release(error);
return ret;
}
if (p->ref == 0)
_hx509_abort("pkcs11 ref == 0 on alloc");
p->ref++;
if (p->ref == UINT_MAX)
_hx509_abort("pkcs11 ref to high");
_hx509_cert_set_release(cert, p11_cert_release, p);
{
heim_octet_string data;
data.data = query[0].pValue;
data.length = query[0].ulValueLen;
_hx509_set_cert_attribute(context,
cert,
&asn1_oid_id_pkcs_9_at_localKeyId,
&data);
}
if ((CK_LONG)query[2].ulValueLen != -1) {
char *str;
ret = asprintf(&str, "%.*s",
(int)query[2].ulValueLen, (char *)query[2].pValue);
if (ret != -1 && str) {
hx509_cert_set_friendly_name(cert, str);
free(str);
}
}
ret = _hx509_collector_certs_add(context, collector, cert);
hx509_cert_free(cert);
return ret;
}
static int
p11_list_keys(hx509_context context,
struct p11_module *p,
struct p11_slot *slot,
CK_SESSION_HANDLE session,
hx509_lock lock,
hx509_certs *certs)
{
struct hx509_collector *collector;
CK_OBJECT_CLASS key_class;
CK_ATTRIBUTE search_data[] = {
{CKA_CLASS, NULL, 0},
};
CK_ATTRIBUTE query_data[3] = {
{CKA_ID, NULL, 0},
{CKA_VALUE, NULL, 0},
{CKA_LABEL, NULL, 0}
};
int ret;
search_data[0].pValue = &key_class;
search_data[0].ulValueLen = sizeof(key_class);
if (lock == NULL)
lock = _hx509_empty_lock;
ret = _hx509_collector_alloc(context, lock, &collector);
if (ret)
return ret;
key_class = CKO_PRIVATE_KEY;
ret = iterate_entries(context, p, slot, session,
search_data, 1,
query_data, 1,
collect_private_key, collector);
if (ret)
goto out;
key_class = CKO_CERTIFICATE;
ret = iterate_entries(context, p, slot, session,
search_data, 1,
query_data, 3,
collect_cert, collector);
if (ret)
goto out;
ret = _hx509_collector_collect_certs(context, collector, &slot->certs);
out:
_hx509_collector_free(collector);
return ret;
}
static int
p11_init(hx509_context context,
hx509_certs certs, void **data, int flags,
const char *residue, hx509_lock lock)
{
CK_C_GetFunctionList getFuncs;
struct p11_module *p;
char *list, *str;
int ret;
*data = NULL;
if (flags & HX509_CERTS_NO_PRIVATE_KEYS) {
hx509_set_error_string(context, 0, ENOTSUP,
"PKCS#11 store does not support "
"HX509_CERTS_NO_PRIVATE_KEYS flag");
return ENOTSUP;
}
if (residue == NULL || residue[0] == '\0') {
hx509_set_error_string(context, 0, EINVAL,
"PKCS#11 store not specified");
return EINVAL;
}
list = strdup(residue);
if (list == NULL)
return ENOMEM;
p = calloc(1, sizeof(*p));
if (p == NULL) {
free(list);
return ENOMEM;
}
p->ref = 1;
p->selected_slot = 0;
str = strchr(list, ',');
if (str)
*str++ = '\0';
while (str) {
char *strnext;
strnext = strchr(str, ',');
if (strnext)
*strnext++ = '\0';
if (strncasecmp(str, "slot=", 5) == 0)
p->selected_slot = atoi(str + 5);
str = strnext;
}
p->dl_handle = dlopen(list, RTLD_NOW | RTLD_LOCAL | RTLD_GROUP);
if (p->dl_handle == NULL) {
ret = HX509_PKCS11_LOAD;
hx509_set_error_string(context, 0, ret,
"Failed to open %s: %s", list, dlerror());
goto out;
}
getFuncs = (CK_C_GetFunctionList) dlsym(p->dl_handle, "C_GetFunctionList");
if (getFuncs == NULL) {
ret = HX509_PKCS11_LOAD;
hx509_set_error_string(context, 0, ret,
"C_GetFunctionList missing in %s: %s",
list, dlerror());
goto out;
}
ret = (*getFuncs)(&p->funcs);
if (ret) {
ret = HX509_PKCS11_LOAD;
hx509_set_error_string(context, 0, ret,
"C_GetFunctionList failed in %s", list);
goto out;
}
ret = P11FUNC(p, Initialize, (NULL_PTR));
if (ret != CKR_OK) {
ret = HX509_PKCS11_TOKEN_CONFUSED;
hx509_set_error_string(context, 0, ret,
"Failed initialize the PKCS11 module");
goto out;
}
ret = P11FUNC(p, GetSlotList, (FALSE, NULL, &p->num_slots));
if (ret) {
ret = HX509_PKCS11_TOKEN_CONFUSED;
hx509_set_error_string(context, 0, ret,
"Failed to get number of PKCS11 slots");
goto out;
}
if (p->num_slots == 0) {
ret = HX509_PKCS11_NO_SLOT;
hx509_set_error_string(context, 0, ret,
"Selected PKCS11 module have no slots");
goto out;
}
{
CK_SLOT_ID_PTR slot_ids;
int num_tokens = 0;
size_t i;
slot_ids = malloc(p->num_slots * sizeof(*slot_ids));
if (slot_ids == NULL) {
hx509_clear_error_string(context);
ret = ENOMEM;
goto out;
}
ret = P11FUNC(p, GetSlotList, (FALSE, slot_ids, &p->num_slots));
if (ret) {
free(slot_ids);
hx509_set_error_string(context, 0, HX509_PKCS11_TOKEN_CONFUSED,
"Failed getting slot-list from "
"PKCS11 module");
ret = HX509_PKCS11_TOKEN_CONFUSED;
goto out;
}
p->slot = calloc(p->num_slots, sizeof(p->slot[0]));
if (p->slot == NULL) {
free(slot_ids);
hx509_set_error_string(context, 0, ENOMEM,
"Failed to get memory for slot-list");
ret = ENOMEM;
goto out;
}
for (i = 0; i < p->num_slots; i++) {
if ((p->selected_slot != 0) && (slot_ids[i] != (p->selected_slot - 1)))
continue;
ret = p11_init_slot(context, p, lock, slot_ids[i], i, &p->slot[i]);
if (!ret) {
if (p->slot[i].flags & P11_TOKEN_PRESENT)
num_tokens++;
}
}
free(slot_ids);
if (ret)
goto out;
if (num_tokens == 0) {
ret = HX509_PKCS11_NO_TOKEN;
goto out;
}
}
free(list);
*data = p;
return 0;
out:
if (list)
free(list);
p11_release_module(p);
return ret;
}
static void
p11_release_module(struct p11_module *p)
{
size_t i;
if (p->ref == 0)
_hx509_abort("pkcs11 ref to low");
if (--p->ref > 0)
return;
for (i = 0; i < p->num_slots; i++) {
if (p->slot[i].flags & P11_SESSION_IN_USE)
_hx509_abort("pkcs11 module release while session in use");
if (p->slot[i].flags & P11_SESSION) {
P11FUNC(p, CloseSession, (p->slot[i].session));
}
if (p->slot[i].name)
free(p->slot[i].name);
if (p->slot[i].pin) {
memset(p->slot[i].pin, 0, strlen(p->slot[i].pin));
free(p->slot[i].pin);
}
if (p->slot[i].mechs.num) {
free(p->slot[i].mechs.list);
if (p->slot[i].mechs.infos) {
size_t j;
for (j = 0 ; j < p->slot[i].mechs.num ; j++)
free(p->slot[i].mechs.infos[j]);
free(p->slot[i].mechs.infos);
}
}
}
free(p->slot);
if (p->funcs)
P11FUNC(p, Finalize, (NULL));
if (p->dl_handle)
dlclose(p->dl_handle);
memset(p, 0, sizeof(*p));
free(p);
}
static int
p11_free(hx509_certs certs, void *data)
{
struct p11_module *p = data;
size_t i;
for (i = 0; i < p->num_slots; i++) {
if (p->slot[i].certs)
hx509_certs_free(&p->slot[i].certs);
}
p11_release_module(p);
return 0;
}
struct p11_cursor {
hx509_certs certs;
void *cursor;
};
static int
p11_iter_start(hx509_context context,
hx509_certs certs, void *data, void **cursor)
{
struct p11_module *p = data;
struct p11_cursor *c;
int ret;
size_t i;
c = malloc(sizeof(*c));
if (c == NULL) {
hx509_clear_error_string(context);
return ENOMEM;
}
ret = hx509_certs_init(context, "MEMORY:pkcs11-iter", 0, NULL, &c->certs);
if (ret) {
free(c);
return ret;
}
for (i = 0 ; i < p->num_slots; i++) {
if (p->slot[i].certs == NULL)
continue;
ret = hx509_certs_merge(context, c->certs, p->slot[i].certs);
if (ret) {
hx509_certs_free(&c->certs);
free(c);
return ret;
}
}
ret = hx509_certs_start_seq(context, c->certs, &c->cursor);
if (ret) {
hx509_certs_free(&c->certs);
free(c);
return 0;
}
*cursor = c;
return 0;
}
static int
p11_iter(hx509_context context,
hx509_certs certs, void *data, void *cursor, hx509_cert *cert)
{
struct p11_cursor *c = cursor;
return hx509_certs_next_cert(context, c->certs, c->cursor, cert);
}
static int
p11_iter_end(hx509_context context,
hx509_certs certs, void *data, void *cursor)
{
struct p11_cursor *c = cursor;
int ret;
ret = hx509_certs_end_seq(context, c->certs, c->cursor);
hx509_certs_free(&c->certs);
free(c);
return ret;
}
#define MECHFLAG(x) { "unknown-flag-" #x, x }
static struct units mechflags[] = {
MECHFLAG(0x80000000),
MECHFLAG(0x40000000),
MECHFLAG(0x20000000),
MECHFLAG(0x10000000),
MECHFLAG(0x08000000),
MECHFLAG(0x04000000),
{"ec-compress", 0x2000000 },
{"ec-uncompress", 0x1000000 },
{"ec-namedcurve", 0x0800000 },
{"ec-ecparameters", 0x0400000 },
{"ec-f-2m", 0x0200000 },
{"ec-f-p", 0x0100000 },
{"derive", 0x0080000 },
{"unwrap", 0x0040000 },
{"wrap", 0x0020000 },
{"genereate-key-pair", 0x0010000 },
{"generate", 0x0008000 },
{"verify-recover", 0x0004000 },
{"verify", 0x0002000 },
{"sign-recover", 0x0001000 },
{"sign", 0x0000800 },
{"digest", 0x0000400 },
{"decrypt", 0x0000200 },
{"encrypt", 0x0000100 },
MECHFLAG(0x00080),
MECHFLAG(0x00040),
MECHFLAG(0x00020),
MECHFLAG(0x00010),
MECHFLAG(0x00008),
MECHFLAG(0x00004),
MECHFLAG(0x00002),
{"hw", 0x0000001 },
{ NULL, 0x0000000 }
};
#undef MECHFLAG
static int
p11_printinfo(hx509_context context,
hx509_certs certs,
void *data,
int (*func)(void *, const char *),
void *ctx)
{
struct p11_module *p = data;
size_t i, j;
_hx509_pi_printf(func, ctx, "pkcs11 driver with %d slot%s",
p->num_slots, p->num_slots > 1 ? "s" : "");
for (i = 0; i < p->num_slots; i++) {
struct p11_slot *s = &p->slot[i];
_hx509_pi_printf(func, ctx, "slot %d: id: %d name: %s flags: %08x",
i, (int)s->id, s->name, s->flags);
_hx509_pi_printf(func, ctx, "number of supported mechanisms: %lu",
(unsigned long)s->mechs.num);
for (j = 0; j < s->mechs.num; j++) {
const char *mechname = "unknown";
char flags[256], unknownname[40];
#define MECHNAME(s,n) case s: mechname = n; break
switch(s->mechs.list[j]) {
MECHNAME(CKM_RSA_PKCS_KEY_PAIR_GEN, "rsa-pkcs-key-pair-gen");
MECHNAME(CKM_RSA_PKCS, "rsa-pkcs");
MECHNAME(CKM_RSA_X_509, "rsa-x-509");
MECHNAME(CKM_MD5_RSA_PKCS, "md5-rsa-pkcs");
MECHNAME(CKM_SHA1_RSA_PKCS, "sha1-rsa-pkcs");
MECHNAME(CKM_SHA256_RSA_PKCS, "sha256-rsa-pkcs");
MECHNAME(CKM_SHA384_RSA_PKCS, "sha384-rsa-pkcs");
MECHNAME(CKM_SHA512_RSA_PKCS, "sha512-rsa-pkcs");
MECHNAME(CKM_RIPEMD160_RSA_PKCS, "ripemd160-rsa-pkcs");
MECHNAME(CKM_RSA_PKCS_OAEP, "rsa-pkcs-oaep");
MECHNAME(CKM_SHA512_HMAC, "sha512-hmac");
MECHNAME(CKM_SHA512, "sha512");
MECHNAME(CKM_SHA384_HMAC, "sha384-hmac");
MECHNAME(CKM_SHA384, "sha384");
MECHNAME(CKM_SHA256_HMAC, "sha256-hmac");
MECHNAME(CKM_SHA256, "sha256");
MECHNAME(CKM_SHA_1, "sha1");
MECHNAME(CKM_MD5, "md5");
MECHNAME(CKM_RIPEMD160, "ripemd-160");
MECHNAME(CKM_DES_ECB, "des-ecb");
MECHNAME(CKM_DES_CBC, "des-cbc");
MECHNAME(CKM_AES_ECB, "aes-ecb");
MECHNAME(CKM_AES_CBC, "aes-cbc");
MECHNAME(CKM_DH_PKCS_PARAMETER_GEN, "dh-pkcs-parameter-gen");
default:
snprintf(unknownname, sizeof(unknownname),
"unknown-mech-%lu",
(unsigned long)s->mechs.list[j]);
mechname = unknownname;
break;
}
#undef MECHNAME
unparse_flags(s->mechs.infos[j]->flags, mechflags,
flags, sizeof(flags));
_hx509_pi_printf(func, ctx, " %s: %s", mechname, flags);
}
}
return 0;
}
static struct hx509_keyset_ops keyset_pkcs11 = {
"PKCS11",
0,
p11_init,
NULL,
p11_free,
NULL,
NULL,
p11_iter_start,
p11_iter,
p11_iter_end,
p11_printinfo,
NULL,
NULL,
NULL
};
#endif /* HAVE_DLOPEN */
HX509_LIB_FUNCTION void HX509_LIB_CALL
_hx509_ks_pkcs11_register(hx509_context context)
{
#ifdef HAVE_DLOPEN
_hx509_ks_register(context, &keyset_pkcs11);
#endif
}
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