x509name.c

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/* crypto/x509/x509name.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson ([email protected]).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young ([email protected])"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson ([email protected])"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <openssl/stack.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>

int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
    {
    ASN1_OBJECT *obj;

    obj=OBJ_nid2obj(nid);
    if (obj == NULL) return(-1);
    return(X509_NAME_get_text_by_OBJ(name,obj,buf,len));
    }

int X509_NAME_get_text_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, char *buf,
         int len)
    {
    int i;
    ASN1_STRING *data;

    i=X509_NAME_get_index_by_OBJ(name,obj,-1);
    if (i < 0) return(-1);
    data=X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name,i));
    i=(data->length > (len-1))?(len-1):data->length;
    if (buf == NULL) return(data->length);
    memcpy(buf,data->data,i);
    buf[i]='\0';
    return(i);
    }

int X509_NAME_entry_count(X509_NAME *name)
    {
    if (name == NULL) return(0);
    return(sk_X509_NAME_ENTRY_num(name->entries));
    }

int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
    {
    ASN1_OBJECT *obj;

    obj=OBJ_nid2obj(nid);
    if (obj == NULL) return(-2);
    return(X509_NAME_get_index_by_OBJ(name,obj,lastpos));
    }

/* NOTE: you should be passsing -1, not 0 as lastpos */
int X509_NAME_get_index_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj,
         int lastpos)
    {
    int n;
    X509_NAME_ENTRY *ne;
    STACK_OF(X509_NAME_ENTRY) *sk;

    if (name == NULL) return(-1);
    if (lastpos < 0)
        lastpos= -1;
    sk=name->entries;
    n=sk_X509_NAME_ENTRY_num(sk);
    for (lastpos++; lastpos < n; lastpos++)
        {
        ne=sk_X509_NAME_ENTRY_value(sk,lastpos);
        if (OBJ_cmp(ne->object,obj) == 0)
            return(lastpos);
        }
    return(-1);
    }

X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
    {
    if(name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
       || loc < 0)
        return(NULL);
    else
        return(sk_X509_NAME_ENTRY_value(name->entries,loc));
    }

X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
    {
    X509_NAME_ENTRY *ret;
    int i,n,set_prev,set_next;
    STACK_OF(X509_NAME_ENTRY) *sk;

    if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
        || loc < 0)
        return(NULL);
    sk=name->entries;
    ret=sk_X509_NAME_ENTRY_delete(sk,loc);
    n=sk_X509_NAME_ENTRY_num(sk);
    name->modified=1;
    if (loc == n) return(ret);

    /* else we need to fixup the set field */
    if (loc != 0)
        set_prev=(sk_X509_NAME_ENTRY_value(sk,loc-1))->set;
    else
        set_prev=ret->set-1;
    set_next=sk_X509_NAME_ENTRY_value(sk,loc)->set;

    /* set_prev is the previous set
     * set is the current set
     * set_next is the following
     * prev  1 1    1 1 1 1 1 1
     * set   1  1   2   2
     * next  1 1    2 2 2 2 3 2
     * so basically only if prev and next differ by 2, then
     * re-number down by 1 */
    if (set_prev+1 < set_next)
        for (i=loc; i<n; i++)
            sk_X509_NAME_ENTRY_value(sk,i)->set--;
    return(ret);
    }

int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
            unsigned char *bytes, int len, int loc, int set)
{
    X509_NAME_ENTRY *ne;
    int ret;
    ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
    if(!ne) return 0;
    ret = X509_NAME_add_entry(name, ne, loc, set);
    X509_NAME_ENTRY_free(ne);
    return ret;
}

int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
            unsigned char *bytes, int len, int loc, int set)
{
    X509_NAME_ENTRY *ne;
    int ret;
    ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
    if(!ne) return 0;
    ret = X509_NAME_add_entry(name, ne, loc, set);
    X509_NAME_ENTRY_free(ne);
    return ret;
}

int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
            const unsigned char *bytes, int len, int loc, int set)
{
    X509_NAME_ENTRY *ne;
    int ret;
    ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
    if(!ne) return 0;
    ret = X509_NAME_add_entry(name, ne, loc, set);
    X509_NAME_ENTRY_free(ne);
    return ret;
}

/* if set is -1, append to previous set, 0 'a new one', and 1,
 * prepend to the guy we are about to stomp on. */
int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
         int set)
    {
    X509_NAME_ENTRY *new_name=NULL;
    int n,i,inc;
    STACK_OF(X509_NAME_ENTRY) *sk;

    if (name == NULL) return(0);
    sk=name->entries;
    n=sk_X509_NAME_ENTRY_num(sk);
    if (loc > n) loc=n;
    else if (loc < 0) loc=n;

    name->modified=1;

    if (set == -1)
        {
        if (loc == 0)
            {
            set=0;
            inc=1;
            }
        else
            {
            set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set;
            inc=0;
            }
        }
    else /* if (set >= 0) */
        {
        if (loc >= n)
            {
            if (loc != 0)
                set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set+1;
            else
                set=0;
            }
        else
            set=sk_X509_NAME_ENTRY_value(sk,loc)->set;
        inc=(set == 0)?1:0;
        }

    if ((new_name=X509_NAME_ENTRY_dup(ne)) == NULL)
        goto err;
    new_name->set=set;
    if (!sk_X509_NAME_ENTRY_insert(sk,new_name,loc))
        {
        X509err(X509_F_X509_NAME_ADD_ENTRY,ERR_R_MALLOC_FAILURE);
        goto err;
        }
    if (inc)
        {
        n=sk_X509_NAME_ENTRY_num(sk);
        for (i=loc+1; i<n; i++)
            sk_X509_NAME_ENTRY_value(sk,i-1)->set+=1;
        }   
    return(1);
err:
    if (new_name != NULL)
        X509_NAME_ENTRY_free(new_name);
    return(0);
    }

X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
        const char *field, int type, const unsigned char *bytes, int len)
    {
    ASN1_OBJECT *obj;
    X509_NAME_ENTRY *nentry;

    obj=OBJ_txt2obj(field, 0);
    if (obj == NULL)
        {
        X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
                        X509_R_INVALID_FIELD_NAME);
        ERR_add_error_data(2, "name=", field);
        return(NULL);
        }
    nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
    ASN1_OBJECT_free(obj);
    return nentry;
    }

X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
         int type, unsigned char *bytes, int len)
    {
    ASN1_OBJECT *obj;
    X509_NAME_ENTRY *nentry;

    obj=OBJ_nid2obj(nid);
    if (obj == NULL)
        {
        X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID,X509_R_UNKNOWN_NID);
        return(NULL);
        }
    nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
    ASN1_OBJECT_free(obj);
    return nentry;
    }

X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
         ASN1_OBJECT *obj, int type, const unsigned char *bytes, int len)
    {
    X509_NAME_ENTRY *ret;

    if ((ne == NULL) || (*ne == NULL))
        {
        if ((ret=X509_NAME_ENTRY_new()) == NULL)
            return(NULL);
        }
    else
        ret= *ne;

    if (!X509_NAME_ENTRY_set_object(ret,obj))
        goto err;
    if (!X509_NAME_ENTRY_set_data(ret,type,bytes,len))
        goto err;

    if ((ne != NULL) && (*ne == NULL)) *ne=ret;
    return(ret);
err:
    if ((ne == NULL) || (ret != *ne))
        X509_NAME_ENTRY_free(ret);
    return(NULL);
    }

int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, ASN1_OBJECT *obj)
    {
    if ((ne == NULL) || (obj == NULL))
        {
        X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,ERR_R_PASSED_NULL_PARAMETER);
        return(0);
        }
    ASN1_OBJECT_free(ne->object);
    ne->object=OBJ_dup(obj);
    return((ne->object == NULL)?0:1);
    }

int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
         const unsigned char *bytes, int len)
    {
    int i;

    if ((ne == NULL) || ((bytes == NULL) && (len != 0))) return(0);
    if((type > 0) && (type & MBSTRING_FLAG)) 
        return ASN1_STRING_set_by_NID(&ne->value, bytes,
                        len, type,
                    OBJ_obj2nid(ne->object)) ? 1 : 0;
    if (len < 0) len=strlen((const char *)bytes);
    i=ASN1_STRING_set(ne->value,bytes,len);
    if (!i) return(0);
    if (type != V_ASN1_UNDEF)
        {
        if (type == V_ASN1_APP_CHOOSE)
            ne->value->type=ASN1_PRINTABLE_type(bytes,len);
        else
            ne->value->type=type;
        }
    return(1);
    }

ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
    {
    if (ne == NULL) return(NULL);
    return(ne->object);
    }

ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
    {
    if (ne == NULL) return(NULL);
    return(ne->value);
    }