/src/openssl/crypto/x509/x509_vpm.c

Source (jump to first uncovered line)
/*
 * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>

#include "internal/cryptlib.h"
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include "internal/x509_int.h"

#include "x509_lcl.h"

/* X509_VERIFY_PARAM functions */

#define SET_HOST 0
#define ADD_HOST 1

static char *str_copy(const char *s)
{
    return OPENSSL_strdup(s);
}

static void str_free(char *s)
{
    OPENSSL_free(s);
}

static int int_x509_param_set_hosts(X509_VERIFY_PARAM *vpm, int mode,
                                    const char *name, size_t namelen)
{
    char *copy;

    /*
     * Refuse names with embedded NUL bytes, except perhaps as final byte.
     * XXX: Do we need to push an error onto the error stack?
     */
    if (namelen == 0 || name == NULL)
        namelen = name ? strlen(name) : 0;
    else if (name && memchr(name, '\0', namelen > 1 ? namelen - 1 : namelen))
        return 0;
    if (namelen > 0 && name[namelen - 1] == '\0')
        --namelen;

    if (mode == SET_HOST) {
        sk_OPENSSL_STRING_pop_free(vpm->hosts, str_free);
        vpm->hosts = NULL;
    }
    if (name == NULL || namelen == 0)
        return 1;

    copy = OPENSSL_strndup(name, namelen);
    if (copy == NULL)
        return 0;

    if (vpm->hosts == NULL &&
        (vpm->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
        OPENSSL_free(copy);
        return 0;
    }

    if (!sk_OPENSSL_STRING_push(vpm->hosts, copy)) {
        OPENSSL_free(copy);
        if (sk_OPENSSL_STRING_num(vpm->hosts) == 0) {
            sk_OPENSSL_STRING_free(vpm->hosts);
            vpm->hosts = NULL;
        }
        return 0;
    }

    return 1;
}


X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
{
    X509_VERIFY_PARAM *param;

    param = OPENSSL_zalloc(sizeof(*param));
    if (param == NULL) {
        X509err(X509_F_X509_VERIFY_PARAM_NEW, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    param->trust = X509_TRUST_DEFAULT;
    /* param->inh_flags = X509_VP_FLAG_DEFAULT; */
    param->depth = -1;
    param->auth_level = -1; /* -1 means unset, 0 is explicit */
    return param;
}

void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
{
    if (param == NULL)
        return;
    sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
    sk_OPENSSL_STRING_pop_free(param->hosts, str_free);
    OPENSSL_free(param->peername);
    OPENSSL_free(param->email);
    OPENSSL_free(param->ip);
    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))))

/* 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;
    if (!src)
        return 1;
    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, X509_TRUST_DEFAULT);
    x509_verify_param_copy(depth, -1);
    x509_verify_param_copy(auth_level, -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(hosts, NULL)) {
        sk_OPENSSL_STRING_pop_free(dest->hosts, str_free);
        dest->hosts = NULL;
        if (src->hosts) {
            dest->hosts =
                sk_OPENSSL_STRING_deep_copy(src->hosts, str_copy, str_free);
            if (dest->hosts == NULL)
                return 0;
            dest->hostflags = src->hostflags;
        }
    }

    if (test_x509_verify_param_copy(email, NULL)) {
        if (!X509_VERIFY_PARAM_set1_email(dest, src->email, src->emaillen))
            return 0;
    }

    if (test_x509_verify_param_copy(ip, NULL)) {
        if (!X509_VERIFY_PARAM_set1_ip(dest, src->ip, src->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)
            srclen = strlen(src);

        tmp = OPENSSL_memdup(src, srclen);
        if (tmp == NULL)
            return 0;
    } else {
        tmp = NULL;
        srclen = 0;
    }
    OPENSSL_free(*pdest);
    *pdest = tmp;
    if (pdestlen != NULL)
        *pdestlen = srclen;
    return 1;
}

int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
{
    OPENSSL_free(param->name);
    param->name = OPENSSL_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;
}

uint32_t X509_VERIFY_PARAM_get_inh_flags(const X509_VERIFY_PARAM *param)
{
    return param->inh_flags;
}

int X509_VERIFY_PARAM_set_inh_flags(X509_VERIFY_PARAM *param, uint32_t flags)
{
    param->inh_flags = flags;
    return 1;
}

int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
{
    return X509_PURPOSE_set(&param->purpose, purpose);
}

int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
{
    return X509_TRUST_set(&param->trust, trust);
}

void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
{
    param->depth = depth;
}

void X509_VERIFY_PARAM_set_auth_level(X509_VERIFY_PARAM *param, int auth_level)
{
    param->auth_level = auth_level;
}

time_t X509_VERIFY_PARAM_get_time(const X509_VERIFY_PARAM *param)
{
    return param->check_time;
}

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)
{
    int i;
    ASN1_OBJECT *oid, *doid;

    if (!param)
        return 0;
    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, 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, ADD_HOST, name, namelen);
}

void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
                                     unsigned int flags)
{
    param->hostflags = flags;
}

unsigned int X509_VERIFY_PARAM_get_hostflags(const X509_VERIFY_PARAM *param)
{
    return param->hostflags;
}

char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
{
    return param->peername;
}

/*
 * Move peername from one param structure to another, freeing any name present
 * at the target.  If the source is a NULL parameter structure, free and zero
 * the target peername.
 */
void X509_VERIFY_PARAM_move_peername(X509_VERIFY_PARAM *to,
                                     X509_VERIFY_PARAM *from)
{
    char *peername = (from != NULL) ? from->peername : NULL;

    if (to->peername != peername) {
        OPENSSL_free(to->peername);
        to->peername = peername;
    }
    if (from)
        from->peername = NULL;
}

int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
                                 const char *email, size_t emaillen)
{
    return int_x509_param_set1(&param->email, &param->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 **)&param->ip, &param->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;
}

int X509_VERIFY_PARAM_get_auth_level(const X509_VERIFY_PARAM *param)
{
    return param->auth_level;
}

const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
{
    return param->name;
}

#define vpm_empty_id NULL, 0U, NULL, NULL, 0, NULL, 0

/*
 * 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[] = {
    {
     "default",                 /* X509 default parameters */
     0,                         /* Check time */
     0,                         /* internal flags */
     X509_V_FLAG_TRUSTED_FIRST, /* flags */
     0,                         /* purpose */
     0,                         /* trust */
     100,                       /* depth */
     -1,                        /* auth_level */
     NULL,                      /* policies */
     vpm_empty_id},
    {
     "pkcs7",                   /* S/MIME sign parameters */
     0,                         /* Check time */
     0,                         /* internal flags */
     0,                         /* flags */
     X509_PURPOSE_SMIME_SIGN,   /* purpose */
     X509_TRUST_EMAIL,          /* trust */
     -1,                        /* depth */
     -1,                        /* auth_level */
     NULL,                      /* policies */
     vpm_empty_id},
    {
     "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 */
     -1,                        /* auth_level */
     NULL,                      /* policies */
     vpm_empty_id},
    {
     "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 */
     -1,                        /* auth_level */
     NULL,                      /* policies */
     vpm_empty_id},
    {
     "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 */
     -1,                        /* auth_level */
     NULL,                      /* policies */
     vpm_empty_id}
};

static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;

static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
{
    return strcmp(a->name, b->name);
}

DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);

static int param_cmp(const X509_VERIFY_PARAM *const *a,
                     const X509_VERIFY_PARAM *const *b)
{
    return strcmp((*a)->name, (*b)->name);
}

int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
{
    int idx;
    X509_VERIFY_PARAM *ptmp;
    if (param_table == NULL) {
        param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
        if (param_table == NULL)
            return 0;
    } else {
        idx = sk_X509_VERIFY_PARAM_find(param_table, param);
        if (idx >= 0) {
            ptmp = sk_X509_VERIFY_PARAM_delete(param_table, idx);
            X509_VERIFY_PARAM_free(ptmp);
        }
    }
    if (!sk_X509_VERIFY_PARAM_push(param_table, param))
        return 0;
    return 1;
}

int X509_VERIFY_PARAM_get_count(void)
{
    int num = OSSL_NELEM(default_table);
    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 = OSSL_NELEM(default_table);
    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)
{
    int idx;
    X509_VERIFY_PARAM pm;

    pm.name = (char *)name;
    if (param_table != NULL) {
        idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
        if (idx >= 0)
            return sk_X509_VERIFY_PARAM_value(param_table, idx);
    }
    return OBJ_bsearch_table(&pm, default_table, OSSL_NELEM(default_table));
}

void X509_VERIFY_PARAM_table_cleanup(void)
{
    sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);
    param_table = NULL;
}

Coverage Report

Created: 2018-08-29 13:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the OpenSSL license (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		#include <stdio.h>
11
12		#include "internal/cryptlib.h"
13		#include <openssl/crypto.h>
14		#include <openssl/buffer.h>
15		#include <openssl/x509.h>
16		#include <openssl/x509v3.h>
17		#include "internal/x509_int.h"
18
19		#include "x509_lcl.h"
20
21		/* X509_VERIFY_PARAM functions */
22
23	0	#define SET_HOST 0
24	0	#define ADD_HOST 1
25
26		static char str_copy(const char s)
27	0	{
28	0	return OPENSSL_strdup(s);
29	0	}
30
31		static void str_free(char *s)
32	0	{
33	0	OPENSSL_free(s);
34	0	}
35
36		static int int_x509_param_set_hosts(X509_VERIFY_PARAM *vpm, int mode,
37		const char *name, size_t namelen)
38	0	{
39	0	char *copy;
40	0
41	0	/*
42	0	* Refuse names with embedded NUL bytes, except perhaps as final byte.
43	0	* XXX: Do we need to push an error onto the error stack?
44	0	*/
45	0	if (namelen == 0 \|\| name == NULL)
46	0	namelen = name ? strlen(name) : 0;
47	0	else if (name && memchr(name, '\0', namelen > 1 ? namelen - 1 : namelen))
48	0	return 0;
49	0	if (namelen > 0 && name[namelen - 1] == '\0')
50	0	--namelen;
51	0
52	0	if (mode == SET_HOST) {
53	0	sk_OPENSSL_STRING_pop_free(vpm->hosts, str_free);
54	0	vpm->hosts = NULL;
55	0	}
56	0	if (name == NULL \|\| namelen == 0)
57	0	return 1;
58	0
59	0	copy = OPENSSL_strndup(name, namelen);
60	0	if (copy == NULL)
61	0	return 0;
62	0
63	0	if (vpm->hosts == NULL &&
64	0	(vpm->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
65	0	OPENSSL_free(copy);
66	0	return 0;
67	0	}
68	0
69	0	if (!sk_OPENSSL_STRING_push(vpm->hosts, copy)) {
70	0	OPENSSL_free(copy);
71	0	if (sk_OPENSSL_STRING_num(vpm->hosts) == 0) {
72	0	sk_OPENSSL_STRING_free(vpm->hosts);
73	0	vpm->hosts = NULL;
74	0	}
75	0	return 0;
76	0	}
77	0
78	0	return 1;
79	0	}
80
81
82		X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
83	0	{
84	0	X509_VERIFY_PARAM *param;
85	0
86	0	param = OPENSSL_zalloc(sizeof(*param));
87	0	if (param == NULL) {
88	0	X509err(X509_F_X509_VERIFY_PARAM_NEW, ERR_R_MALLOC_FAILURE);
89	0	return NULL;
90	0	}
91	0	param->trust = X509_TRUST_DEFAULT;
92	0	/* param->inh_flags = X509_VP_FLAG_DEFAULT; */
93	0	param->depth = -1;
94	0	param->auth_level = -1; /* -1 means unset, 0 is explicit */
95	0	return param;
96	0	}
97
98		void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
99	0	{
100	0	if (param == NULL)
101	0	return;
102	0	sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
103	0	sk_OPENSSL_STRING_pop_free(param->hosts, str_free);
104	0	OPENSSL_free(param->peername);
105	0	OPENSSL_free(param->email);
106	0	OPENSSL_free(param->ip);
107	0	OPENSSL_free(param);
108	0	}
109
110		/*-
111		* This function determines how parameters are "inherited" from one structure
112		* to another. There are several different ways this can happen.
113		*
114		* 1. If a child structure needs to have its values initialized from a parent
115		* they are simply copied across. For example SSL_CTX copied to SSL.
116		* 2. If the structure should take on values only if they are currently unset.
117		* For example the values in an SSL structure will take appropriate value
118		* for SSL servers or clients but only if the application has not set new
119		* ones.
120		*
121		* The "inh_flags" field determines how this function behaves.
122		*
123		* Normally any values which are set in the default are not copied from the
124		* destination and verify flags are ORed together.
125		*
126		* If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
127		* to the destination. Effectively the values in "to" become default values
128		* which will be used only if nothing new is set in "from".
129		*
130		* If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
131		* they are set or not. Flags is still Ored though.
132		*
133		* If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
134		* of ORed.
135		*
136		* If X509_VP_FLAG_LOCKED is set then no values are copied.
137		*
138		* If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
139		* after the next call.
140		*/
141
142		/* Macro to test if a field should be copied from src to dest */
143
144		#define test_x509_verify_param_copy(field, def) \
145	0	(to_overwrite \|\| \
146	0	((src->field != def) && (to_default \|\| (dest->field == def))))
147
148		/* Macro to test and copy a field if necessary */
149
150		#define x509_verify_param_copy(field, def) \
151	0	if (test_x509_verify_param_copy(field, def)) \
152	0	dest->field = src->field
153
154		int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
155		const X509_VERIFY_PARAM *src)
156	0	{
157	0	unsigned long inh_flags;
158	0	int to_default, to_overwrite;
159	0	if (!src)
160	0	return 1;
161	0	inh_flags = dest->inh_flags \| src->inh_flags;
162	0
163	0	if (inh_flags & X509_VP_FLAG_ONCE)
164	0	dest->inh_flags = 0;
165	0
166	0	if (inh_flags & X509_VP_FLAG_LOCKED)
167	0	return 1;
168	0
169	0	if (inh_flags & X509_VP_FLAG_DEFAULT)
170	0	to_default = 1;
171	0	else
172	0	to_default = 0;
173	0
174	0	if (inh_flags & X509_VP_FLAG_OVERWRITE)
175	0	to_overwrite = 1;
176	0	else
177	0	to_overwrite = 0;
178	0
179	0	x509_verify_param_copy(purpose, 0);
180	0	x509_verify_param_copy(trust, X509_TRUST_DEFAULT);
181	0	x509_verify_param_copy(depth, -1);
182	0	x509_verify_param_copy(auth_level, -1);
183	0
184	0	/* If overwrite or check time not set, copy across */
185	0
186	0	if (to_overwrite \|\| !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
187	0	dest->check_time = src->check_time;
188	0	dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
189	0	/* Don't need to copy flag: that is done below */
190	0	}
191	0
192	0	if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
193	0	dest->flags = 0;
194	0
195	0	dest->flags \|= src->flags;
196	0
197	0	if (test_x509_verify_param_copy(policies, NULL)) {
198	0	if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
199	0	return 0;
200	0	}
201	0
202	0	/* Copy the host flags if and only if we're copying the host list */
203	0	if (test_x509_verify_param_copy(hosts, NULL)) {
204	0	sk_OPENSSL_STRING_pop_free(dest->hosts, str_free);
205	0	dest->hosts = NULL;
206	0	if (src->hosts) {
207	0	dest->hosts =
208	0	sk_OPENSSL_STRING_deep_copy(src->hosts, str_copy, str_free);
209	0	if (dest->hosts == NULL)
210	0	return 0;
211	0	dest->hostflags = src->hostflags;
212	0	}
213	0	}
214	0
215	0	if (test_x509_verify_param_copy(email, NULL)) {
216	0	if (!X509_VERIFY_PARAM_set1_email(dest, src->email, src->emaillen))
217	0	return 0;
218	0	}
219	0
220	0	if (test_x509_verify_param_copy(ip, NULL)) {
221	0	if (!X509_VERIFY_PARAM_set1_ip(dest, src->ip, src->iplen))
222	0	return 0;
223	0	}
224	0
225	0	return 1;
226	0	}
227
228		int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
229		const X509_VERIFY_PARAM *from)
230	0	{
231	0	unsigned long save_flags = to->inh_flags;
232	0	int ret;
233	0	to->inh_flags \|= X509_VP_FLAG_DEFAULT;
234	0	ret = X509_VERIFY_PARAM_inherit(to, from);
235	0	to->inh_flags = save_flags;
236	0	return ret;
237	0	}
238
239		static int int_x509_param_set1(char *pdest, size_t pdestlen,
240		const char *src, size_t srclen)
241	0	{
242	0	void *tmp;
243	0	if (src) {
244	0	if (srclen == 0)
245	0	srclen = strlen(src);
246	0
247	0	tmp = OPENSSL_memdup(src, srclen);
248	0	if (tmp == NULL)
249	0	return 0;
250	0	} else {
251	0	tmp = NULL;
252	0	srclen = 0;
253	0	}
254	0	OPENSSL_free(*pdest);
255	0	*pdest = tmp;
256	0	if (pdestlen != NULL)
257	0	*pdestlen = srclen;
258	0	return 1;
259	0	}
260
261		int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM param, const char name)
262	0	{
263	0	OPENSSL_free(param->name);
264	0	param->name = OPENSSL_strdup(name);
265	0	if (param->name)
266	0	return 1;
267	0	return 0;
268	0	}
269
270		int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
271	0	{
272	0	param->flags \|= flags;
273	0	if (flags & X509_V_FLAG_POLICY_MASK)
274	0	param->flags \|= X509_V_FLAG_POLICY_CHECK;
275	0	return 1;
276	0	}
277
278		int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
279		unsigned long flags)
280	0	{
281	0	param->flags &= ~flags;
282	0	return 1;
283	0	}
284
285		unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
286	0	{
287	0	return param->flags;
288	0	}
289
290		uint32_t X509_VERIFY_PARAM_get_inh_flags(const X509_VERIFY_PARAM *param)
291	0	{
292	0	return param->inh_flags;
293	0	}
294
295		int X509_VERIFY_PARAM_set_inh_flags(X509_VERIFY_PARAM *param, uint32_t flags)
296	0	{
297	0	param->inh_flags = flags;
298	0	return 1;
299	0	}
300
301		int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
302	0	{
303	0	return X509_PURPOSE_set(&param->purpose, purpose);
304	0	}
305
306		int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
307	0	{
308	0	return X509_TRUST_set(&param->trust, trust);
309	0	}
310
311		void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
312	0	{
313	0	param->depth = depth;
314	0	}
315
316		void X509_VERIFY_PARAM_set_auth_level(X509_VERIFY_PARAM *param, int auth_level)
317	0	{
318	0	param->auth_level = auth_level;
319	0	}
320
321		time_t X509_VERIFY_PARAM_get_time(const X509_VERIFY_PARAM *param)
322	0	{
323	0	return param->check_time;
324	0	}
325
326		void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
327	0	{
328	0	param->check_time = t;
329	0	param->flags \|= X509_V_FLAG_USE_CHECK_TIME;
330	0	}
331
332		int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
333		ASN1_OBJECT *policy)
334	0	{
335	0	if (!param->policies) {
336	0	param->policies = sk_ASN1_OBJECT_new_null();
337	0	if (!param->policies)
338	0	return 0;
339	0	}
340	0	if (!sk_ASN1_OBJECT_push(param->policies, policy))
341	0	return 0;
342	0	return 1;
343	0	}
344
345		int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
346		STACK_OF(ASN1_OBJECT) *policies)
347	0	{
348	0	int i;
349	0	ASN1_OBJECT oid, doid;
350	0
351	0	if (!param)
352	0	return 0;
353	0	sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
354	0
355	0	if (!policies) {
356	0	param->policies = NULL;
357	0	return 1;
358	0	}
359	0
360	0	param->policies = sk_ASN1_OBJECT_new_null();
361	0	if (!param->policies)
362	0	return 0;
363	0
364	0	for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
365	0	oid = sk_ASN1_OBJECT_value(policies, i);
366	0	doid = OBJ_dup(oid);
367	0	if (!doid)
368	0	return 0;
369	0	if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
370	0	ASN1_OBJECT_free(doid);
371	0	return 0;
372	0	}
373	0	}
374	0	param->flags \|= X509_V_FLAG_POLICY_CHECK;
375	0	return 1;
376	0	}
377
378		int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
379		const char *name, size_t namelen)
380	0	{
381	0	return int_x509_param_set_hosts(param, SET_HOST, name, namelen);
382	0	}
383
384		int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
385		const char *name, size_t namelen)
386	0	{
387	0	return int_x509_param_set_hosts(param, ADD_HOST, name, namelen);
388	0	}
389
390		void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
391		unsigned int flags)
392	0	{
393	0	param->hostflags = flags;
394	0	}
395
396		unsigned int X509_VERIFY_PARAM_get_hostflags(const X509_VERIFY_PARAM *param)
397	0	{
398	0	return param->hostflags;
399	0	}
400
401		char X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM param)
402	0	{
403	0	return param->peername;
404	0	}
405
406		/*
407		* Move peername from one param structure to another, freeing any name present
408		* at the target. If the source is a NULL parameter structure, free and zero
409		* the target peername.
410		*/
411		void X509_VERIFY_PARAM_move_peername(X509_VERIFY_PARAM *to,
412		X509_VERIFY_PARAM *from)
413	0	{
414	0	char *peername = (from != NULL) ? from->peername : NULL;
415	0
416	0	if (to->peername != peername) {
417	0	OPENSSL_free(to->peername);
418	0	to->peername = peername;
419	0	}
420	0	if (from)
421	0	from->peername = NULL;
422	0	}
423
424		int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
425		const char *email, size_t emaillen)
426	0	{
427	0	return int_x509_param_set1(&param->email, &param->emaillen,
428	0	email, emaillen);
429	0	}
430
431		int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
432		const unsigned char *ip, size_t iplen)
433	0	{
434	0	if (iplen != 0 && iplen != 4 && iplen != 16)
435	0	return 0;
436	0	return int_x509_param_set1((char **)&param->ip, &param->iplen,
437	0	(char *)ip, iplen);
438	0	}
439
440		int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM param, const char ipasc)
441	0	{
442	0	unsigned char ipout[16];
443	0	size_t iplen;
444	0
445	0	iplen = (size_t)a2i_ipadd(ipout, ipasc);
446	0	if (iplen == 0)
447	0	return 0;
448	0	return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
449	0	}
450
451		int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
452	0	{
453	0	return param->depth;
454	0	}
455
456		int X509_VERIFY_PARAM_get_auth_level(const X509_VERIFY_PARAM *param)
457	0	{
458	0	return param->auth_level;
459	0	}
460
461		const char X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM param)
462	0	{
463	0	return param->name;
464	0	}
465
466		#define vpm_empty_id NULL, 0U, NULL, NULL, 0, NULL, 0
467
468		/*
469		* Default verify parameters: these are used for various applications and can
470		* be overridden by the user specified table. NB: the 'name' field must be
471		* in alphabetical order because it will be searched using OBJ_search.
472		*/
473
474		static const X509_VERIFY_PARAM default_table[] = {
475		{
476		"default", /* X509 default parameters */
477		0, /* Check time */
478		0, /* internal flags */
479		X509_V_FLAG_TRUSTED_FIRST, /* flags */
480		0, /* purpose */
481		0, /* trust */
482		100, /* depth */
483		-1, /* auth_level */
484		NULL, /* policies */
485		vpm_empty_id},
486		{
487		"pkcs7", /* S/MIME sign parameters */
488		0, /* Check time */
489		0, /* internal flags */
490		0, /* flags */
491		X509_PURPOSE_SMIME_SIGN, /* purpose */
492		X509_TRUST_EMAIL, /* trust */
493		-1, /* depth */
494		-1, /* auth_level */
495		NULL, /* policies */
496		vpm_empty_id},
497		{
498		"smime_sign", /* S/MIME sign parameters */
499		0, /* Check time */
500		0, /* internal flags */
501		0, /* flags */
502		X509_PURPOSE_SMIME_SIGN, /* purpose */
503		X509_TRUST_EMAIL, /* trust */
504		-1, /* depth */
505		-1, /* auth_level */
506		NULL, /* policies */
507		vpm_empty_id},
508		{
509		"ssl_client", /* SSL/TLS client parameters */
510		0, /* Check time */
511		0, /* internal flags */
512		0, /* flags */
513		X509_PURPOSE_SSL_CLIENT, /* purpose */
514		X509_TRUST_SSL_CLIENT, /* trust */
515		-1, /* depth */
516		-1, /* auth_level */
517		NULL, /* policies */
518		vpm_empty_id},
519		{
520		"ssl_server", /* SSL/TLS server parameters */
521		0, /* Check time */
522		0, /* internal flags */
523		0, /* flags */
524		X509_PURPOSE_SSL_SERVER, /* purpose */
525		X509_TRUST_SSL_SERVER, /* trust */
526		-1, /* depth */
527		-1, /* auth_level */
528		NULL, /* policies */
529		vpm_empty_id}
530		};
531
532		static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
533
534		static int table_cmp(const X509_VERIFY_PARAM a, const X509_VERIFY_PARAM b)
535	0	{
536	0	return strcmp(a->name, b->name);
537	0	}
538
539		DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
540		IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table);
541
542		static int param_cmp(const X509_VERIFY_PARAM const a,
543		const X509_VERIFY_PARAM const b)
544	0	{
545	0	return strcmp((a)->name, (b)->name);
546	0	}
547
548		int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
549	0	{
550	0	int idx;
551	0	X509_VERIFY_PARAM *ptmp;
552	0	if (param_table == NULL) {
553	0	param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
554	0	if (param_table == NULL)
555	0	return 0;
556	0	} else {
557	0	idx = sk_X509_VERIFY_PARAM_find(param_table, param);
558	0	if (idx >= 0) {
559	0	ptmp = sk_X509_VERIFY_PARAM_delete(param_table, idx);
560	0	X509_VERIFY_PARAM_free(ptmp);
561	0	}
562	0	}
563	0	if (!sk_X509_VERIFY_PARAM_push(param_table, param))
564	0	return 0;
565	0	return 1;
566	0	}
567
568		int X509_VERIFY_PARAM_get_count(void)
569	0	{
570	0	int num = OSSL_NELEM(default_table);
571	0	if (param_table)
572	0	num += sk_X509_VERIFY_PARAM_num(param_table);
573	0	return num;
574	0	}
575
576		const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
577	0	{
578	0	int num = OSSL_NELEM(default_table);
579	0	if (id < num)
580	0	return default_table + id;
581	0	return sk_X509_VERIFY_PARAM_value(param_table, id - num);
582	0	}
583
584		const X509_VERIFY_PARAM X509_VERIFY_PARAM_lookup(const char name)
585	0	{
586	0	int idx;
587	0	X509_VERIFY_PARAM pm;
588	0
589	0	pm.name = (char *)name;
590	0	if (param_table != NULL) {
591	0	idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
592	0	if (idx >= 0)
593	0	return sk_X509_VERIFY_PARAM_value(param_table, idx);
594	0	}
595	0	return OBJ_bsearch_table(&pm, default_table, OSSL_NELEM(default_table));
596	0	}
597
598		void X509_VERIFY_PARAM_table_cleanup(void)
599	0	{
600	0	sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);
601	0	param_table = NULL;
602	0	}