| /* |
| * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
| * 2004. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 2004 The OpenSSL Project. 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. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED 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 OpenSSL PROJECT OR |
| * ITS 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. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). */ |
| |
| #include <string.h> |
| |
| #include <openssl/buf.h> |
| #include <openssl/lhash.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/stack.h> |
| #include <openssl/x509.h> |
| #include <openssl/x509v3.h> |
| |
| #include "vpm_int.h" |
| |
| /* X509_VERIFY_PARAM functions */ |
| |
| #define SET_HOST 0 |
| #define ADD_HOST 1 |
| |
| static char *str_copy(char *s) |
| { |
| return OPENSSL_strdup(s); |
| } |
| |
| static void str_free(char *s) |
| { |
| OPENSSL_free(s); |
| } |
| |
| #define string_stack_free(sk) sk_OPENSSL_STRING_pop_free(sk, str_free) |
| |
| static int int_x509_param_set_hosts(X509_VERIFY_PARAM_ID *id, int mode, |
| const char *name, size_t namelen) |
| { |
| char *copy; |
| |
| /* |
| * Refuse names with embedded NUL bytes. |
| * XXX: Do we need to push an error onto the error stack? |
| */ |
| if (name && memchr(name, '\0', namelen)) |
| return 0; |
| |
| if (mode == SET_HOST && id->hosts) { |
| string_stack_free(id->hosts); |
| id->hosts = NULL; |
| } |
| if (name == NULL || namelen == 0) |
| return 1; |
| |
| copy = BUF_strndup(name, namelen); |
| if (copy == NULL) |
| return 0; |
| |
| if (id->hosts == NULL && |
| (id->hosts = sk_OPENSSL_STRING_new_null()) == NULL) { |
| OPENSSL_free(copy); |
| return 0; |
| } |
| |
| if (!sk_OPENSSL_STRING_push(id->hosts, copy)) { |
| OPENSSL_free(copy); |
| if (sk_OPENSSL_STRING_num(id->hosts) == 0) { |
| sk_OPENSSL_STRING_free(id->hosts); |
| id->hosts = NULL; |
| } |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static void x509_verify_param_zero(X509_VERIFY_PARAM *param) |
| { |
| X509_VERIFY_PARAM_ID *paramid; |
| if (!param) |
| return; |
| param->name = NULL; |
| param->purpose = 0; |
| param->trust = 0; |
| /* |
| * param->inh_flags = X509_VP_FLAG_DEFAULT; |
| */ |
| param->inh_flags = 0; |
| param->flags = 0; |
| param->depth = -1; |
| if (param->policies) { |
| sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free); |
| param->policies = NULL; |
| } |
| paramid = param->id; |
| if (paramid->hosts) { |
| string_stack_free(paramid->hosts); |
| paramid->hosts = NULL; |
| } |
| if (paramid->peername) { |
| OPENSSL_free(paramid->peername); |
| paramid->peername = NULL; |
| } |
| if (paramid->email) { |
| OPENSSL_free(paramid->email); |
| paramid->email = NULL; |
| paramid->emaillen = 0; |
| } |
| if (paramid->ip) { |
| OPENSSL_free(paramid->ip); |
| paramid->ip = NULL; |
| paramid->iplen = 0; |
| } |
| |
| } |
| |
| X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void) |
| { |
| X509_VERIFY_PARAM *param; |
| X509_VERIFY_PARAM_ID *paramid; |
| param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM)); |
| if (!param) |
| return NULL; |
| paramid = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM_ID)); |
| if (!paramid) { |
| OPENSSL_free(param); |
| return NULL; |
| } |
| memset(param, 0, sizeof(X509_VERIFY_PARAM)); |
| memset(paramid, 0, sizeof(X509_VERIFY_PARAM_ID)); |
| param->id = paramid; |
| x509_verify_param_zero(param); |
| return param; |
| } |
| |
| void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param) |
| { |
| if (param == NULL) |
| return; |
| x509_verify_param_zero(param); |
| OPENSSL_free(param->id); |
| OPENSSL_free(param); |
| } |
| |
| /*- |
| * This function determines how parameters are "inherited" from one structure |
| * to another. There are several different ways this can happen. |
| * |
| * 1. If a child structure needs to have its values initialized from a parent |
| * they are simply copied across. For example SSL_CTX copied to SSL. |
| * 2. If the structure should take on values only if they are currently unset. |
| * For example the values in an SSL structure will take appropriate value |
| * for SSL servers or clients but only if the application has not set new |
| * ones. |
| * |
| * The "inh_flags" field determines how this function behaves. |
| * |
| * Normally any values which are set in the default are not copied from the |
| * destination and verify flags are ORed together. |
| * |
| * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied |
| * to the destination. Effectively the values in "to" become default values |
| * which will be used only if nothing new is set in "from". |
| * |
| * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether |
| * they are set or not. Flags is still Ored though. |
| * |
| * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead |
| * of ORed. |
| * |
| * If X509_VP_FLAG_LOCKED is set then no values are copied. |
| * |
| * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed |
| * after the next call. |
| */ |
| |
| /* Macro to test if a field should be copied from src to dest */ |
| |
| #define test_x509_verify_param_copy(field, def) \ |
| (to_overwrite || \ |
| ((src->field != (def)) && (to_default || (dest->field == (def))))) |
| |
| /* As above but for ID fields */ |
| |
| #define test_x509_verify_param_copy_id(idf, def) \ |
| test_x509_verify_param_copy(id->idf, def) |
| |
| /* Macro to test and copy a field if necessary */ |
| |
| #define x509_verify_param_copy(field, def) \ |
| if (test_x509_verify_param_copy(field, def)) \ |
| dest->field = src->field |
| |
| int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest, |
| const X509_VERIFY_PARAM *src) |
| { |
| unsigned long inh_flags; |
| int to_default, to_overwrite; |
| X509_VERIFY_PARAM_ID *id; |
| if (!src) |
| return 1; |
| id = src->id; |
| inh_flags = dest->inh_flags | src->inh_flags; |
| |
| if (inh_flags & X509_VP_FLAG_ONCE) |
| dest->inh_flags = 0; |
| |
| if (inh_flags & X509_VP_FLAG_LOCKED) |
| return 1; |
| |
| if (inh_flags & X509_VP_FLAG_DEFAULT) |
| to_default = 1; |
| else |
| to_default = 0; |
| |
| if (inh_flags & X509_VP_FLAG_OVERWRITE) |
| to_overwrite = 1; |
| else |
| to_overwrite = 0; |
| |
| x509_verify_param_copy(purpose, 0); |
| x509_verify_param_copy(trust, 0); |
| x509_verify_param_copy(depth, -1); |
| |
| /* If overwrite or check time not set, copy across */ |
| |
| if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) { |
| dest->check_time = src->check_time; |
| dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME; |
| /* Don't need to copy flag: that is done below */ |
| } |
| |
| if (inh_flags & X509_VP_FLAG_RESET_FLAGS) |
| dest->flags = 0; |
| |
| dest->flags |= src->flags; |
| |
| if (test_x509_verify_param_copy(policies, NULL)) { |
| if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies)) |
| return 0; |
| } |
| |
| /* Copy the host flags if and only if we're copying the host list */ |
| if (test_x509_verify_param_copy_id(hosts, NULL)) { |
| if (dest->id->hosts) { |
| string_stack_free(dest->id->hosts); |
| dest->id->hosts = NULL; |
| } |
| if (id->hosts) { |
| dest->id->hosts = |
| sk_OPENSSL_STRING_deep_copy(id->hosts, str_copy, str_free); |
| if (dest->id->hosts == NULL) |
| return 0; |
| dest->id->hostflags = id->hostflags; |
| } |
| } |
| |
| if (test_x509_verify_param_copy_id(email, NULL)) { |
| if (!X509_VERIFY_PARAM_set1_email(dest, id->email, id->emaillen)) |
| return 0; |
| } |
| |
| if (test_x509_verify_param_copy_id(ip, NULL)) { |
| if (!X509_VERIFY_PARAM_set1_ip(dest, id->ip, id->iplen)) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to, |
| const X509_VERIFY_PARAM *from) |
| { |
| unsigned long save_flags = to->inh_flags; |
| int ret; |
| to->inh_flags |= X509_VP_FLAG_DEFAULT; |
| ret = X509_VERIFY_PARAM_inherit(to, from); |
| to->inh_flags = save_flags; |
| return ret; |
| } |
| |
| static int int_x509_param_set1(char **pdest, size_t *pdestlen, |
| const char *src, size_t srclen) |
| { |
| void *tmp; |
| if (src) { |
| if (srclen == 0) { |
| tmp = BUF_strdup(src); |
| srclen = strlen(src); |
| } else |
| tmp = BUF_memdup(src, srclen); |
| if (!tmp) |
| return 0; |
| } else { |
| tmp = NULL; |
| srclen = 0; |
| } |
| if (*pdest) |
| OPENSSL_free(*pdest); |
| *pdest = tmp; |
| if (pdestlen) |
| *pdestlen = srclen; |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name) |
| { |
| if (param->name) |
| OPENSSL_free(param->name); |
| param->name = BUF_strdup(name); |
| if (param->name) |
| return 1; |
| return 0; |
| } |
| |
| int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags) |
| { |
| param->flags |= flags; |
| if (flags & X509_V_FLAG_POLICY_MASK) |
| param->flags |= X509_V_FLAG_POLICY_CHECK; |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, |
| unsigned long flags) |
| { |
| param->flags &= ~flags; |
| return 1; |
| } |
| |
| unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param) |
| { |
| return param->flags; |
| } |
| |
| int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose) |
| { |
| return X509_PURPOSE_set(¶m->purpose, purpose); |
| } |
| |
| int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust) |
| { |
| return X509_TRUST_set(¶m->trust, trust); |
| } |
| |
| void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth) |
| { |
| param->depth = depth; |
| } |
| |
| void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t) |
| { |
| param->check_time = t; |
| param->flags |= X509_V_FLAG_USE_CHECK_TIME; |
| } |
| |
| int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, |
| ASN1_OBJECT *policy) |
| { |
| if (!param->policies) { |
| param->policies = sk_ASN1_OBJECT_new_null(); |
| if (!param->policies) |
| return 0; |
| } |
| if (!sk_ASN1_OBJECT_push(param->policies, policy)) |
| return 0; |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param, |
| STACK_OF(ASN1_OBJECT) *policies) |
| { |
| size_t i; |
| ASN1_OBJECT *oid, *doid; |
| if (!param) |
| return 0; |
| if (param->policies) |
| sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free); |
| |
| if (!policies) { |
| param->policies = NULL; |
| return 1; |
| } |
| |
| param->policies = sk_ASN1_OBJECT_new_null(); |
| if (!param->policies) |
| return 0; |
| |
| for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) { |
| oid = sk_ASN1_OBJECT_value(policies, i); |
| doid = OBJ_dup(oid); |
| if (!doid) |
| return 0; |
| if (!sk_ASN1_OBJECT_push(param->policies, doid)) { |
| ASN1_OBJECT_free(doid); |
| return 0; |
| } |
| } |
| param->flags |= X509_V_FLAG_POLICY_CHECK; |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param, |
| const char *name, size_t namelen) |
| { |
| return int_x509_param_set_hosts(param->id, SET_HOST, name, namelen); |
| } |
| |
| int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param, |
| const char *name, size_t namelen) |
| { |
| return int_x509_param_set_hosts(param->id, ADD_HOST, name, namelen); |
| } |
| |
| void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param, |
| unsigned int flags) |
| { |
| param->id->hostflags = flags; |
| } |
| |
| char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param) |
| { |
| return param->id->peername; |
| } |
| |
| int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param, |
| const char *email, size_t emaillen) |
| { |
| return int_x509_param_set1(¶m->id->email, ¶m->id->emaillen, |
| email, emaillen); |
| } |
| |
| int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param, |
| const unsigned char *ip, size_t iplen) |
| { |
| if (iplen != 0 && iplen != 4 && iplen != 16) |
| return 0; |
| return int_x509_param_set1((char **)¶m->id->ip, ¶m->id->iplen, |
| (char *)ip, iplen); |
| } |
| |
| int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc) |
| { |
| unsigned char ipout[16]; |
| size_t iplen; |
| |
| iplen = (size_t)a2i_ipadd(ipout, ipasc); |
| if (iplen == 0) |
| return 0; |
| return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen); |
| } |
| |
| int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param) |
| { |
| return param->depth; |
| } |
| |
| const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param) |
| { |
| return param->name; |
| } |
| |
| static const X509_VERIFY_PARAM_ID _empty_id = |
| { NULL, 0U, NULL, NULL, 0, NULL, 0 }; |
| |
| #define vpm_empty_id ((X509_VERIFY_PARAM_ID *)&_empty_id) |
| |
| /* |
| * Default verify parameters: these are used for various applications and can |
| * be overridden by the user specified table. NB: the 'name' field *must* be |
| * in alphabetical order because it will be searched using OBJ_search. |
| */ |
| |
| static const X509_VERIFY_PARAM default_table[] = { |
| { |
| (char *)"default", /* X509 default parameters */ |
| 0, /* Check time */ |
| 0, /* internal flags */ |
| 0, /* flags */ |
| 0, /* purpose */ |
| 0, /* trust */ |
| 100, /* depth */ |
| NULL, /* policies */ |
| vpm_empty_id}, |
| { |
| (char *)"pkcs7", /* S/MIME sign parameters */ |
| 0, /* Check time */ |
| 0, /* internal flags */ |
| 0, /* flags */ |
| X509_PURPOSE_SMIME_SIGN, /* purpose */ |
| X509_TRUST_EMAIL, /* trust */ |
| -1, /* depth */ |
| NULL, /* policies */ |
| vpm_empty_id}, |
| { |
| (char *)"smime_sign", /* S/MIME sign parameters */ |
| 0, /* Check time */ |
| 0, /* internal flags */ |
| 0, /* flags */ |
| X509_PURPOSE_SMIME_SIGN, /* purpose */ |
| X509_TRUST_EMAIL, /* trust */ |
| -1, /* depth */ |
| NULL, /* policies */ |
| vpm_empty_id}, |
| { |
| (char *)"ssl_client", /* SSL/TLS client parameters */ |
| 0, /* Check time */ |
| 0, /* internal flags */ |
| 0, /* flags */ |
| X509_PURPOSE_SSL_CLIENT, /* purpose */ |
| X509_TRUST_SSL_CLIENT, /* trust */ |
| -1, /* depth */ |
| NULL, /* policies */ |
| vpm_empty_id}, |
| { |
| (char *)"ssl_server", /* SSL/TLS server parameters */ |
| 0, /* Check time */ |
| 0, /* internal flags */ |
| 0, /* flags */ |
| X509_PURPOSE_SSL_SERVER, /* purpose */ |
| X509_TRUST_SSL_SERVER, /* trust */ |
| -1, /* depth */ |
| NULL, /* policies */ |
| vpm_empty_id} |
| }; |
| |
| static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL; |
| |
| static int param_cmp(const X509_VERIFY_PARAM **a, const X509_VERIFY_PARAM **b) |
| { |
| return strcmp((*a)->name, (*b)->name); |
| } |
| |
| int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param) |
| { |
| X509_VERIFY_PARAM *ptmp; |
| if (!param_table) { |
| param_table = sk_X509_VERIFY_PARAM_new(param_cmp); |
| if (!param_table) |
| return 0; |
| } else { |
| size_t idx; |
| |
| if (sk_X509_VERIFY_PARAM_find(param_table, &idx, param)) { |
| ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx); |
| X509_VERIFY_PARAM_free(ptmp); |
| (void)sk_X509_VERIFY_PARAM_delete(param_table, idx); |
| } |
| } |
| if (!sk_X509_VERIFY_PARAM_push(param_table, param)) |
| return 0; |
| return 1; |
| } |
| |
| int X509_VERIFY_PARAM_get_count(void) |
| { |
| int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM); |
| if (param_table) |
| num += sk_X509_VERIFY_PARAM_num(param_table); |
| return num; |
| } |
| |
| const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id) |
| { |
| int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM); |
| if (id < num) |
| return default_table + id; |
| return sk_X509_VERIFY_PARAM_value(param_table, id - num); |
| } |
| |
| const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name) |
| { |
| X509_VERIFY_PARAM pm; |
| unsigned i, limit; |
| |
| pm.name = (char *)name; |
| if (param_table) { |
| size_t idx; |
| if (sk_X509_VERIFY_PARAM_find(param_table, &idx, &pm)) |
| return sk_X509_VERIFY_PARAM_value(param_table, idx); |
| } |
| |
| limit = sizeof(default_table) / sizeof(X509_VERIFY_PARAM); |
| for (i = 0; i < limit; i++) { |
| if (strcmp(default_table[i].name, name) == 0) { |
| return &default_table[i]; |
| } |
| } |
| return NULL; |
| } |
| |
| void X509_VERIFY_PARAM_table_cleanup(void) |
| { |
| if (param_table) |
| sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free); |
| param_table = NULL; |
| } |