summaryrefslogtreecommitdiffstats
path: root/lib/isc/pk11.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/isc/pk11.c1112
1 files changed, 1112 insertions, 0 deletions
diff --git a/lib/isc/pk11.c b/lib/isc/pk11.c
new file mode 100644
index 0000000..6d77314
--- /dev/null
+++ b/lib/isc/pk11.c
@@ -0,0 +1,1112 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/log.h>
+#include <isc/mem.h>
+#include <isc/once.h>
+#include <isc/platform.h>
+#include <isc/print.h>
+#include <isc/stdio.h>
+#include <isc/strerr.h>
+#include <isc/string.h>
+#include <isc/thread.h>
+#include <isc/util.h>
+
+#include <pk11/internal.h>
+#include <pk11/pk11.h>
+#include <pk11/result.h>
+#include <pk11/site.h>
+#include <pkcs11/pkcs11.h>
+
+#include <dst/result.h>
+
+/* was 32 octets, Petr Spacek suggested 1024, SoftHSMv2 uses 256... */
+#ifndef PINLEN
+#define PINLEN 256
+#endif /* ifndef PINLEN */
+
+#ifndef PK11_NO_LOGERR
+#define PK11_NO_LOGERR 1
+#endif /* ifndef PK11_NO_LOGERR */
+
+LIBISC_EXTERNAL_DATA bool pk11_verbose_init = false;
+
+static isc_once_t once = ISC_ONCE_INIT;
+static isc_mem_t *pk11_mctx = NULL;
+static int32_t allocsize = 0;
+static bool initialized = false;
+
+typedef struct pk11_session pk11_session_t;
+typedef struct pk11_token pk11_token_t;
+typedef ISC_LIST(pk11_session_t) pk11_sessionlist_t;
+
+struct pk11_session {
+ unsigned int magic;
+ CK_SESSION_HANDLE session;
+ ISC_LINK(pk11_session_t) link;
+ pk11_token_t *token;
+};
+
+struct pk11_token {
+ unsigned int magic;
+ unsigned int operations;
+ ISC_LINK(pk11_token_t) link;
+ CK_SLOT_ID slotid;
+ pk11_sessionlist_t sessions;
+ bool logged;
+ char name[32];
+ char manuf[32];
+ char model[16];
+ char serial[16];
+ char pin[PINLEN + 1];
+};
+static ISC_LIST(pk11_token_t) tokens;
+
+static pk11_token_t *best_rsa_token;
+static pk11_token_t *best_ecdsa_token;
+static pk11_token_t *best_eddsa_token;
+
+static isc_result_t
+free_all_sessions(void);
+static isc_result_t
+free_session_list(pk11_sessionlist_t *slist);
+static isc_result_t
+setup_session(pk11_session_t *sp, pk11_token_t *token, bool rw);
+static void
+scan_slots(void);
+static isc_result_t
+token_login(pk11_session_t *sp);
+static char *
+percent_decode(char *x, size_t *len);
+static bool
+pk11strcmp(const char *x, size_t lenx, const char *y, size_t leny);
+static CK_ATTRIBUTE *
+push_attribute(pk11_object_t *obj, isc_mem_t *mctx, size_t len);
+
+static isc_mutex_t alloclock;
+static isc_mutex_t sessionlock;
+
+static pk11_sessionlist_t actives;
+
+static CK_C_INITIALIZE_ARGS pk11_init_args = {
+ NULL_PTR, /* CreateMutex */
+ NULL_PTR, /* DestroyMutex */
+ NULL_PTR, /* LockMutex */
+ NULL_PTR, /* UnlockMutex */
+ CKF_OS_LOCKING_OK, /* flags */
+ NULL_PTR, /* pReserved */
+};
+
+#ifndef PK11_LIB_LOCATION
+#define PK11_LIB_LOCATION "unknown_provider"
+#endif /* ifndef PK11_LIB_LOCATION */
+
+#ifndef WIN32
+static const char *lib_name = PK11_LIB_LOCATION;
+#else /* ifndef WIN32 */
+static const char *lib_name = PK11_LIB_LOCATION ".dll";
+#endif /* ifndef WIN32 */
+
+void
+pk11_set_lib_name(const char *name) {
+ lib_name = name;
+}
+
+const char *
+pk11_get_lib_name(void) {
+ return (lib_name);
+}
+
+static void
+initialize(void) {
+ char *pk11_provider;
+
+ isc_mutex_init(&alloclock);
+ isc_mutex_init(&sessionlock);
+
+ pk11_provider = getenv("PKCS11_PROVIDER");
+ if (pk11_provider != NULL) {
+ lib_name = pk11_provider;
+ }
+}
+
+void *
+pk11_mem_get(size_t size) {
+ void *ptr;
+
+ LOCK(&alloclock);
+ if (pk11_mctx != NULL) {
+ ptr = isc_mem_get(pk11_mctx, size);
+ } else {
+ ptr = malloc(size);
+ if (ptr == NULL && size != 0) {
+ char strbuf[ISC_STRERRORSIZE];
+ strerror_r(errno, strbuf, sizeof(strbuf));
+ isc_error_fatal(__FILE__, __LINE__, "malloc failed: %s",
+ strbuf);
+ }
+ }
+ UNLOCK(&alloclock);
+
+ if (ptr != NULL) {
+ memset(ptr, 0, size);
+ }
+ return (ptr);
+}
+
+void
+pk11_mem_put(void *ptr, size_t size) {
+ if (ptr != NULL) {
+ memset(ptr, 0, size);
+ }
+ LOCK(&alloclock);
+ if (pk11_mctx != NULL) {
+ isc_mem_put(pk11_mctx, ptr, size);
+ } else {
+ if (ptr != NULL) {
+ allocsize -= (int)size;
+ }
+ free(ptr);
+ }
+ UNLOCK(&alloclock);
+}
+
+isc_result_t
+pk11_initialize(isc_mem_t *mctx, const char *engine) {
+ isc_result_t result = ISC_R_SUCCESS;
+ CK_RV rv;
+
+ RUNTIME_CHECK(isc_once_do(&once, initialize) == ISC_R_SUCCESS);
+
+ LOCK(&sessionlock);
+ LOCK(&alloclock);
+ if ((mctx != NULL) && (pk11_mctx == NULL) && (allocsize == 0)) {
+ isc_mem_attach(mctx, &pk11_mctx);
+ }
+ UNLOCK(&alloclock);
+ if (initialized) {
+ goto unlock;
+ } else {
+ initialized = true;
+ }
+
+ ISC_LIST_INIT(tokens);
+ ISC_LIST_INIT(actives);
+
+ if (engine != NULL) {
+ lib_name = engine;
+ }
+
+ /* Initialize the CRYPTOKI library */
+ rv = pkcs_C_Initialize((CK_VOID_PTR)&pk11_init_args);
+
+ if (rv == 0xfe) {
+ result = PK11_R_NOPROVIDER;
+ fprintf(stderr, "Can't load PKCS#11 provider: %s\n",
+ pk11_get_load_error_message());
+ goto unlock;
+ }
+ if (rv != CKR_OK) {
+ result = PK11_R_INITFAILED;
+ goto unlock;
+ }
+
+ scan_slots();
+unlock:
+ UNLOCK(&sessionlock);
+ return (result);
+}
+
+isc_result_t
+pk11_finalize(void) {
+ pk11_token_t *token, *next;
+ isc_result_t ret;
+
+ ret = free_all_sessions();
+ (void)pkcs_C_Finalize(NULL_PTR);
+ token = ISC_LIST_HEAD(tokens);
+ while (token != NULL) {
+ next = ISC_LIST_NEXT(token, link);
+ ISC_LIST_UNLINK(tokens, token, link);
+ if (token == best_rsa_token) {
+ best_rsa_token = NULL;
+ }
+ if (token == best_ecdsa_token) {
+ best_ecdsa_token = NULL;
+ }
+ if (token == best_eddsa_token) {
+ best_eddsa_token = NULL;
+ }
+ pk11_mem_put(token, sizeof(*token));
+ token = next;
+ }
+ if (pk11_mctx != NULL) {
+ isc_mem_detach(&pk11_mctx);
+ }
+ initialized = false;
+ return (ret);
+}
+
+isc_result_t
+pk11_get_session(pk11_context_t *ctx, pk11_optype_t optype, bool need_services,
+ bool rw, bool logon, const char *pin, CK_SLOT_ID slot) {
+ pk11_token_t *token = NULL;
+ pk11_sessionlist_t *freelist;
+ pk11_session_t *sp;
+ isc_result_t ret;
+ UNUSED(need_services);
+
+ memset(ctx, 0, sizeof(pk11_context_t));
+ ctx->handle = NULL;
+ ctx->session = CK_INVALID_HANDLE;
+
+ ret = pk11_initialize(NULL, NULL);
+ if (ret != ISC_R_SUCCESS) {
+ return (ret);
+ }
+
+ LOCK(&sessionlock);
+ /* wait for initialization to finish */
+ UNLOCK(&sessionlock);
+
+ switch (optype) {
+ case OP_ANY:
+ for (token = ISC_LIST_HEAD(tokens); token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (token->slotid == slot) {
+ break;
+ }
+ }
+ break;
+ default:
+ for (token = ISC_LIST_HEAD(tokens); token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (token->slotid == slot) {
+ break;
+ }
+ }
+ break;
+ }
+ if (token == NULL) {
+ return (ISC_R_NOTFOUND);
+ }
+
+ /* Override the token's PIN */
+ if (logon && pin != NULL && *pin != '\0') {
+ if (strlen(pin) > PINLEN) {
+ return (ISC_R_RANGE);
+ }
+ /*
+ * We want to zero out the old pin before
+ * overwriting with a new one.
+ */
+ memset(token->pin, 0, sizeof(token->pin));
+ strlcpy(token->pin, pin, sizeof(token->pin));
+ }
+
+ freelist = &token->sessions;
+
+ LOCK(&sessionlock);
+ sp = ISC_LIST_HEAD(*freelist);
+ if (sp != NULL) {
+ ISC_LIST_UNLINK(*freelist, sp, link);
+ ISC_LIST_APPEND(actives, sp, link);
+ UNLOCK(&sessionlock);
+ if (logon) {
+ ret = token_login(sp);
+ }
+ ctx->handle = sp;
+ ctx->session = sp->session;
+ return (ret);
+ }
+ UNLOCK(&sessionlock);
+
+ sp = pk11_mem_get(sizeof(*sp));
+ sp->magic = SES_MAGIC;
+ sp->token = token;
+ sp->session = CK_INVALID_HANDLE;
+ ISC_LINK_INIT(sp, link);
+ ret = setup_session(sp, token, rw);
+ if ((ret == ISC_R_SUCCESS) && logon) {
+ ret = token_login(sp);
+ }
+ LOCK(&sessionlock);
+ ISC_LIST_APPEND(actives, sp, link);
+ UNLOCK(&sessionlock);
+ ctx->handle = sp;
+ ctx->session = sp->session;
+ return (ret);
+}
+
+void
+pk11_return_session(pk11_context_t *ctx) {
+ pk11_session_t *sp = (pk11_session_t *)ctx->handle;
+
+ if (sp == NULL) {
+ return;
+ }
+ ctx->handle = NULL;
+ ctx->session = CK_INVALID_HANDLE;
+
+ LOCK(&sessionlock);
+ ISC_LIST_UNLINK(actives, sp, link);
+ UNLOCK(&sessionlock);
+ if (sp->session == CK_INVALID_HANDLE) {
+ pk11_mem_put(sp, sizeof(*sp));
+ return;
+ }
+
+ LOCK(&sessionlock);
+ ISC_LIST_APPEND(sp->token->sessions, sp, link);
+ UNLOCK(&sessionlock);
+}
+
+static isc_result_t
+free_all_sessions(void) {
+ pk11_token_t *token;
+ isc_result_t ret = ISC_R_SUCCESS;
+ isc_result_t oret;
+
+ for (token = ISC_LIST_HEAD(tokens); token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ oret = free_session_list(&token->sessions);
+ if (oret != ISC_R_SUCCESS) {
+ ret = oret;
+ }
+ }
+ if (!ISC_LIST_EMPTY(actives)) {
+ ret = ISC_R_ADDRINUSE;
+ oret = free_session_list(&actives);
+ if (oret != ISC_R_SUCCESS) {
+ ret = oret;
+ }
+ }
+ return (ret);
+}
+
+static isc_result_t
+free_session_list(pk11_sessionlist_t *slist) {
+ pk11_session_t *sp;
+ CK_RV rv;
+ isc_result_t ret;
+
+ ret = ISC_R_SUCCESS;
+ LOCK(&sessionlock);
+ while (!ISC_LIST_EMPTY(*slist)) {
+ sp = ISC_LIST_HEAD(*slist);
+ ISC_LIST_UNLINK(*slist, sp, link);
+ UNLOCK(&sessionlock);
+ if (sp->session != CK_INVALID_HANDLE) {
+ rv = pkcs_C_CloseSession(sp->session);
+ if (rv != CKR_OK) {
+ ret = DST_R_CRYPTOFAILURE;
+ }
+ }
+ LOCK(&sessionlock);
+ pk11_mem_put(sp, sizeof(*sp));
+ }
+ UNLOCK(&sessionlock);
+
+ return (ret);
+}
+
+static isc_result_t
+setup_session(pk11_session_t *sp, pk11_token_t *token, bool rw) {
+ CK_RV rv;
+ CK_FLAGS flags = CKF_SERIAL_SESSION;
+
+ if (rw) {
+ flags += CKF_RW_SESSION;
+ }
+
+ rv = pkcs_C_OpenSession(token->slotid, flags, NULL_PTR, NULL_PTR,
+ &sp->session);
+ if (rv != CKR_OK) {
+ return (DST_R_CRYPTOFAILURE);
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+token_login(pk11_session_t *sp) {
+ CK_RV rv;
+ pk11_token_t *token = sp->token;
+ isc_result_t ret = ISC_R_SUCCESS;
+
+ LOCK(&sessionlock);
+ if (!token->logged) {
+ rv = pkcs_C_Login(sp->session, CKU_USER,
+ (CK_UTF8CHAR_PTR)token->pin,
+ (CK_ULONG)strlen(token->pin));
+ if (rv != CKR_OK) {
+#if PK11_NO_LOGERR
+ pk11_error_fatalcheck(__FILE__, __LINE__,
+ "pkcs_C_Login", rv);
+#else /* if PK11_NO_LOGERR */
+ ret = ISC_R_NOPERM;
+#endif /* if PK11_NO_LOGERR */
+ } else {
+ token->logged = true;
+ }
+ }
+ UNLOCK(&sessionlock);
+ return (ret);
+}
+
+#define PK11_TRACE(fmt) \
+ if (pk11_verbose_init) \
+ fprintf(stderr, fmt)
+#define PK11_TRACE1(fmt, arg) \
+ if (pk11_verbose_init) \
+ fprintf(stderr, fmt, arg)
+#define PK11_TRACE2(fmt, arg1, arg2) \
+ if (pk11_verbose_init) \
+ fprintf(stderr, fmt, arg1, arg2)
+#define PK11_TRACEM(mech) \
+ if (pk11_verbose_init) \
+ fprintf(stderr, #mech ": 0x%lx\n", rv)
+
+static void
+scan_slots(void) {
+ CK_MECHANISM_INFO mechInfo;
+ CK_TOKEN_INFO tokenInfo;
+ CK_RV rv;
+ CK_SLOT_ID slot;
+ CK_SLOT_ID_PTR slotList;
+ CK_ULONG slotCount;
+ pk11_token_t *token;
+ unsigned int i;
+ bool bad;
+
+ slotCount = 0;
+ PK11_FATALCHECK(pkcs_C_GetSlotList, (CK_FALSE, NULL_PTR, &slotCount));
+ PK11_TRACE1("slotCount=%lu\n", slotCount);
+ /* it's not an error if we didn't find any providers */
+ if (slotCount == 0) {
+ return;
+ }
+ slotList = pk11_mem_get(sizeof(CK_SLOT_ID) * slotCount);
+ PK11_FATALCHECK(pkcs_C_GetSlotList, (CK_FALSE, slotList, &slotCount));
+
+ for (i = 0; i < slotCount; i++) {
+ slot = slotList[i];
+ PK11_TRACE2("slot#%u=0x%lx\n", i, slot);
+
+ rv = pkcs_C_GetTokenInfo(slot, &tokenInfo);
+ if (rv != CKR_OK) {
+ continue;
+ }
+ token = pk11_mem_get(sizeof(*token));
+ token->magic = TOK_MAGIC;
+ token->slotid = slot;
+ ISC_LINK_INIT(token, link);
+ ISC_LIST_INIT(token->sessions);
+ memmove(token->name, tokenInfo.label, 32);
+ memmove(token->manuf, tokenInfo.manufacturerID, 32);
+ memmove(token->model, tokenInfo.model, 16);
+ memmove(token->serial, tokenInfo.serialNumber, 16);
+ ISC_LIST_APPEND(tokens, token, link);
+
+ /* Check for RSA support */
+ bad = false;
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_RSA_PKCS_KEY_PAIR_GEN,
+ &mechInfo);
+ if ((rv != CKR_OK) ||
+ ((mechInfo.flags & CKF_GENERATE_KEY_PAIR) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_RSA_PKCS_KEY_PAIR_GEN);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_MD5_RSA_PKCS, &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_MD5_RSA_PKCS);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_SHA1_RSA_PKCS,
+ &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_SHA1_RSA_PKCS);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_SHA256_RSA_PKCS,
+ &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_SHA256_RSA_PKCS);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_SHA512_RSA_PKCS,
+ &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_SHA512_RSA_PKCS);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_RSA_PKCS, &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_RSA_PKCS);
+ }
+ if (!bad) {
+ token->operations |= 1 << OP_RSA;
+ if (best_rsa_token == NULL) {
+ best_rsa_token = token;
+ }
+ }
+
+ /* Check for ECDSA support */
+ bad = false;
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_EC_KEY_PAIR_GEN,
+ &mechInfo);
+ if ((rv != CKR_OK) ||
+ ((mechInfo.flags & CKF_GENERATE_KEY_PAIR) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_EC_KEY_PAIR_GEN);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_ECDSA, &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_ECDSA);
+ }
+ if (!bad) {
+ token->operations |= 1 << OP_ECDSA;
+ if (best_ecdsa_token == NULL) {
+ best_ecdsa_token = token;
+ }
+ }
+
+ /* Check for EDDSA support */
+ bad = false;
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_EC_EDWARDS_KEY_PAIR_GEN,
+ &mechInfo);
+ if ((rv != CKR_OK) ||
+ ((mechInfo.flags & CKF_GENERATE_KEY_PAIR) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_EC_EDWARDS_KEY_PAIR_GEN);
+ }
+ rv = pkcs_C_GetMechanismInfo(slot, CKM_EDDSA, &mechInfo);
+ if ((rv != CKR_OK) || ((mechInfo.flags & CKF_SIGN) == 0) ||
+ ((mechInfo.flags & CKF_VERIFY) == 0))
+ {
+ bad = true;
+ PK11_TRACEM(CKM_EDDSA);
+ }
+ if (!bad) {
+ token->operations |= 1 << OP_EDDSA;
+ if (best_eddsa_token == NULL) {
+ best_eddsa_token = token;
+ }
+ }
+ }
+
+ if (slotList != NULL) {
+ pk11_mem_put(slotList, sizeof(CK_SLOT_ID) * slotCount);
+ }
+}
+
+CK_SLOT_ID
+pk11_get_best_token(pk11_optype_t optype) {
+ pk11_token_t *token = NULL;
+
+ switch (optype) {
+ case OP_RSA:
+ token = best_rsa_token;
+ break;
+ case OP_ECDSA:
+ token = best_ecdsa_token;
+ break;
+ case OP_EDDSA:
+ token = best_eddsa_token;
+ break;
+ default:
+ break;
+ }
+ if (token == NULL) {
+ return (0);
+ }
+ return (token->slotid);
+}
+
+isc_result_t
+pk11_numbits(CK_BYTE_PTR data, unsigned int bytecnt, unsigned int *bits) {
+ unsigned int bitcnt, i;
+ CK_BYTE top;
+
+ if (bytecnt == 0) {
+ *bits = 0;
+ return (ISC_R_SUCCESS);
+ }
+ bitcnt = bytecnt * 8;
+ for (i = 0; i < bytecnt; i++) {
+ top = data[i];
+ if (top == 0) {
+ bitcnt -= 8;
+ continue;
+ }
+ if (top & 0x80) {
+ *bits = bitcnt;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x40) {
+ *bits = bitcnt - 1;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x20) {
+ *bits = bitcnt - 2;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x10) {
+ *bits = bitcnt - 3;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x08) {
+ *bits = bitcnt - 4;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x04) {
+ *bits = bitcnt - 5;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x02) {
+ *bits = bitcnt - 6;
+ return (ISC_R_SUCCESS);
+ }
+ if (top & 0x01) {
+ *bits = bitcnt - 7;
+ return (ISC_R_SUCCESS);
+ }
+ break;
+ }
+ return (ISC_R_RANGE);
+}
+
+CK_ATTRIBUTE *
+pk11_attribute_first(const pk11_object_t *obj) {
+ return (obj->repr);
+}
+
+CK_ATTRIBUTE *
+pk11_attribute_next(const pk11_object_t *obj, CK_ATTRIBUTE *attr) {
+ CK_ATTRIBUTE *next;
+
+ next = attr + 1;
+ if ((next - obj->repr) >= obj->attrcnt) {
+ return (NULL);
+ }
+ return (next);
+}
+
+CK_ATTRIBUTE *
+pk11_attribute_bytype(const pk11_object_t *obj, CK_ATTRIBUTE_TYPE type) {
+ CK_ATTRIBUTE *attr;
+
+ for (attr = pk11_attribute_first(obj); attr != NULL;
+ attr = pk11_attribute_next(obj, attr))
+ {
+ if (attr->type == type) {
+ return (attr);
+ }
+ }
+ return (NULL);
+}
+
+static char *
+percent_decode(char *x, size_t *len) {
+ char *p, *c;
+ unsigned char v = 0;
+
+ INSIST(len != NULL);
+
+ for (p = c = x; p[0] != '\0'; p++, c++) {
+ switch (p[0]) {
+ case '%':
+ switch (p[1]) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ v = (p[1] - '0') << 4;
+ break;
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'D':
+ case 'E':
+ case 'F':
+ v = (p[1] - 'A' + 10) << 4;
+ break;
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ v = (p[1] - 'a' + 10) << 4;
+ break;
+ default:
+ return (NULL);
+ }
+ switch (p[2]) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ v |= (p[2] - '0') & 0x0f;
+ break;
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'D':
+ case 'E':
+ case 'F':
+ v = (p[2] - 'A' + 10) & 0x0f;
+ break;
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ v = (p[2] - 'a' + 10) & 0x0f;
+ break;
+ default:
+ return (NULL);
+ }
+ p += 2;
+ *c = (char)v;
+ (*len)++;
+ break;
+ default:
+ *c = *p;
+ (*len)++;
+ }
+ }
+ return (x);
+}
+
+static bool
+pk11strcmp(const char *x, size_t lenx, const char *y, size_t leny) {
+ char buf[32];
+
+ INSIST((leny == 32) || (leny == 16));
+
+ memset(buf, ' ', 32);
+ if (lenx > leny) {
+ lenx = leny;
+ }
+ memmove(buf, x, lenx);
+ return (memcmp(buf, y, leny) == 0);
+}
+
+static CK_ATTRIBUTE *
+push_attribute(pk11_object_t *obj, isc_mem_t *mctx, size_t len) {
+ CK_ATTRIBUTE *old = obj->repr;
+ CK_ATTRIBUTE *attr;
+ CK_BYTE cnt = obj->attrcnt;
+
+ REQUIRE(old != NULL || cnt == 0);
+
+ obj->repr = isc_mem_get(mctx, (cnt + 1) * sizeof(*attr));
+ memset(obj->repr, 0, (cnt + 1) * sizeof(*attr));
+ if (old != NULL) {
+ memmove(obj->repr, old, cnt * sizeof(*attr));
+ }
+ attr = obj->repr + cnt;
+ attr->ulValueLen = (CK_ULONG)len;
+ attr->pValue = isc_mem_get(mctx, len);
+ memset(attr->pValue, 0, len);
+ if (old != NULL) {
+ memset(old, 0, cnt * sizeof(*attr));
+ isc_mem_put(mctx, old, cnt * sizeof(*attr));
+ }
+ obj->attrcnt++;
+ return (attr);
+}
+
+#define DST_RET(a) \
+ { \
+ ret = a; \
+ goto err; \
+ }
+
+isc_result_t
+pk11_parse_uri(pk11_object_t *obj, const char *label, isc_mem_t *mctx,
+ pk11_optype_t optype) {
+ CK_ATTRIBUTE *attr;
+ pk11_token_t *token = NULL;
+ char *uri, *p, *a, *na, *v;
+ size_t len, l;
+ FILE *stream = NULL;
+ char pin[PINLEN + 1];
+ bool gotpin = false;
+ isc_result_t ret;
+
+ /* get values to work on */
+ len = strlen(label) + 1;
+ uri = isc_mem_get(mctx, len);
+ memmove(uri, label, len);
+
+ /* get the URI scheme */
+ p = strchr(uri, ':');
+ if (p == NULL) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ *p++ = '\0';
+ if (strcmp(uri, "pkcs11") != 0) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+
+ /* get attributes */
+ for (na = p; na != NULL;) {
+ a = na;
+ p = strchr(a, ';');
+ if (p == NULL) {
+ /* last attribute */
+ na = NULL;
+ } else {
+ *p++ = '\0';
+ na = p;
+ }
+ p = strchr(a, '=');
+ if (p != NULL) {
+ *p++ = '\0';
+ v = p;
+ } else {
+ v = a;
+ }
+ l = 0;
+ v = percent_decode(v, &l);
+ if (v == NULL) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ if ((a == v) || (strcmp(a, "object") == 0)) {
+ /* object: CKA_LABEL */
+ attr = pk11_attribute_bytype(obj, CKA_LABEL);
+ if (attr != NULL) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ attr = push_attribute(obj, mctx, l);
+ if (attr == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+ attr->type = CKA_LABEL;
+ memmove(attr->pValue, v, l);
+ } else if (strcmp(a, "token") == 0) {
+ /* token: CK_TOKEN_INFO label */
+ if (token == NULL) {
+ for (token = ISC_LIST_HEAD(tokens);
+ token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (pk11strcmp(v, l, token->name, 32)) {
+ break;
+ }
+ }
+ }
+ } else if (strcmp(a, "manufacturer") == 0) {
+ /* manufacturer: CK_TOKEN_INFO manufacturerID */
+ if (token == NULL) {
+ for (token = ISC_LIST_HEAD(tokens);
+ token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (pk11strcmp(v, l, token->manuf, 32))
+ {
+ break;
+ }
+ }
+ }
+ } else if (strcmp(a, "serial") == 0) {
+ /* serial: CK_TOKEN_INFO serialNumber */
+ if (token == NULL) {
+ for (token = ISC_LIST_HEAD(tokens);
+ token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (pk11strcmp(v, l, token->serial, 16))
+ {
+ break;
+ }
+ }
+ }
+ } else if (strcmp(a, "model") == 0) {
+ /* model: CK_TOKEN_INFO model */
+ if (token == NULL) {
+ for (token = ISC_LIST_HEAD(tokens);
+ token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ if (pk11strcmp(v, l, token->model, 16))
+ {
+ break;
+ }
+ }
+ }
+ } else if (strcmp(a, "library-manufacturer") == 0) {
+ /* ignored */
+ } else if (strcmp(a, "library-description") == 0) {
+ /* ignored */
+ } else if (strcmp(a, "library-version") == 0) {
+ /* ignored */
+ } else if (strcmp(a, "object-type") == 0) {
+ /* object-type: CKA_CLASS */
+ /* only private makes sense */
+ if (strcmp(v, "private") != 0) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ } else if (strcmp(a, "id") == 0) {
+ /* id: CKA_ID */
+ attr = pk11_attribute_bytype(obj, CKA_ID);
+ if (attr != NULL) {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ attr = push_attribute(obj, mctx, l);
+ if (attr == NULL) {
+ DST_RET(ISC_R_NOMEMORY);
+ }
+ attr->type = CKA_ID;
+ memmove(attr->pValue, v, l);
+ } else if (strcmp(a, "pin-source") == 0) {
+ /* pin-source: PIN */
+ ret = isc_stdio_open(v, "r", &stream);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ memset(pin, 0, PINLEN + 1);
+ ret = isc_stdio_read(pin, 1, PINLEN + 1, stream, &l);
+ if ((ret != ISC_R_SUCCESS) && (ret != ISC_R_EOF)) {
+ goto err;
+ }
+ if (l > PINLEN) {
+ DST_RET(ISC_R_RANGE);
+ }
+ ret = isc_stdio_close(stream);
+ stream = NULL;
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ gotpin = true;
+ } else {
+ DST_RET(PK11_R_NOPROVIDER);
+ }
+ }
+
+ if ((pk11_attribute_bytype(obj, CKA_LABEL) == NULL) &&
+ (pk11_attribute_bytype(obj, CKA_ID) == NULL))
+ {
+ DST_RET(ISC_R_NOTFOUND);
+ }
+
+ if (token == NULL) {
+ if (optype == OP_RSA) {
+ token = best_rsa_token;
+ } else if (optype == OP_ECDSA) {
+ token = best_ecdsa_token;
+ } else if (optype == OP_EDDSA) {
+ token = best_eddsa_token;
+ }
+ }
+ if (token == NULL) {
+ DST_RET(ISC_R_NOTFOUND);
+ }
+ obj->slot = token->slotid;
+ if (gotpin) {
+ memmove(token->pin, pin, PINLEN + 1);
+ obj->reqlogon = true;
+ }
+
+ ret = ISC_R_SUCCESS;
+
+err:
+ if (stream != NULL) {
+ (void)isc_stdio_close(stream);
+ }
+ isc_mem_put(mctx, uri, len);
+ return (ret);
+}
+
+void
+pk11_error_fatalcheck(const char *file, int line, const char *funcname,
+ CK_RV rv) {
+ isc_error_fatal(file, line, "%s: Error = 0x%.8lX\n", funcname, rv);
+}
+
+void
+pk11_dump_tokens(void) {
+ pk11_token_t *token;
+ bool first;
+
+ printf("DEFAULTS\n");
+ printf("\tbest_rsa_token=%p\n", best_rsa_token);
+ printf("\tbest_ecdsa_token=%p\n", best_ecdsa_token);
+ printf("\tbest_eddsa_token=%p\n", best_eddsa_token);
+
+ for (token = ISC_LIST_HEAD(tokens); token != NULL;
+ token = ISC_LIST_NEXT(token, link))
+ {
+ printf("\nTOKEN\n");
+ printf("\taddress=%p\n", token);
+ printf("\tslotID=%lu\n", token->slotid);
+ printf("\tlabel=%.32s\n", token->name);
+ printf("\tmanufacturerID=%.32s\n", token->manuf);
+ printf("\tmodel=%.16s\n", token->model);
+ printf("\tserialNumber=%.16s\n", token->serial);
+ printf("\tsupported operations=0x%x (", token->operations);
+ first = true;
+ if (token->operations & (1 << OP_RSA)) {
+ first = false;
+ printf("RSA");
+ }
+ if (token->operations & (1 << OP_ECDSA)) {
+ if (!first) {
+ printf(",");
+ }
+ printf("EC");
+ }
+ printf(")\n");
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 19:11:02 +0000