190075Sobrien/* crypto/x509/x509_att.c */ 2169689Skan/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3169689Skan * All rights reserved. 490075Sobrien * 590075Sobrien * This package is an SSL implementation written 690075Sobrien * by Eric Young (eay@cryptsoft.com). 7132718Skan * The implementation was written so as to conform with Netscapes SSL. 890075Sobrien * 9132718Skan * This library is free for commercial and non-commercial use as long as 1090075Sobrien * the following conditions are aheared to. The following conditions 1190075Sobrien * apply to all code found in this distribution, be it the RC4, RSA, 1290075Sobrien * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1390075Sobrien * included with this distribution is covered by the same copyright terms 14132718Skan * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1590075Sobrien * 1690075Sobrien * Copyright remains Eric Young's, and as such any Copyright notices in 1790075Sobrien * the code are not to be removed. 1890075Sobrien * If this package is used in a product, Eric Young should be given attribution 1990075Sobrien * as the author of the parts of the library used. 20132718Skan * This can be in the form of a textual message at program startup or 21169689Skan * in documentation (online or textual) provided with the package. 22169689Skan * 2390075Sobrien * Redistribution and use in source and binary forms, with or without 2490075Sobrien * modification, are permitted provided that the following conditions 2590075Sobrien * are met: 2690075Sobrien * 1. Redistributions of source code must retain the copyright 2790075Sobrien * notice, this list of conditions and the following disclaimer. 2890075Sobrien * 2. Redistributions in binary form must reproduce the above copyright 2990075Sobrien * notice, this list of conditions and the following disclaimer in the 3090075Sobrien * documentation and/or other materials provided with the distribution. 3190075Sobrien * 3. All advertising materials mentioning features or use of this software 3290075Sobrien * must display the following acknowledgement: 33117395Skan * "This product includes cryptographic software written by 34117395Skan * Eric Young (eay@cryptsoft.com)" 35117395Skan * The word 'cryptographic' can be left out if the rouines from the library 36117395Skan * being used are not cryptographic related :-). 37117395Skan * 4. If you include any Windows specific code (or a derivative thereof) from 38117395Skan * the apps directory (application code) you must include an acknowledgement: 39117395Skan * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40117395Skan * 41117395Skan * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42117395Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43117395Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44117395Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45132718Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46132718Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47132718Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48132718Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4996263Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50132718Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51132718Skan * SUCH DAMAGE. 5290075Sobrien * 5390075Sobrien * The licence and distribution terms for any publically available version or 5490075Sobrien * derivative of this code cannot be changed. i.e. this code cannot simply be 5596263Sobrien * copied and put under another distribution licence 5696263Sobrien * [including the GNU Public Licence.] 57169689Skan */ 58169689Skan 59169689Skan#include <stdio.h> 6096263Sobrien#include <openssl/stack.h> 61132718Skan#include <openssl/local/cryptlib.h> 62132718Skan#include <openssl/asn1.h> 63132718Skan#include <openssl/objects.h> 64132718Skan#include <openssl/evp.h> 65132718Skan#include <openssl/x509.h> 66132718Skan#include <openssl/x509v3.h> 67132718Skan 68132718Skanint X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x) 69132718Skan{ 70117395Skan return sk_X509_ATTRIBUTE_num(x); 71117395Skan} 72117395Skan 73117395Skanint X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid, 74132718Skan int lastpos) 75117395Skan{ 76117395Skan ASN1_OBJECT *obj; 77169689Skan 78169689Skan obj=OBJ_nid2obj(nid); 79169689Skan if (obj == NULL) return(-2); 80169689Skan return(X509at_get_attr_by_OBJ(x,obj,lastpos)); 81117395Skan} 82117395Skan 83117395Skanint X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj, 84117395Skan int lastpos) 85169689Skan{ 86169689Skan int n; 8790075Sobrien X509_ATTRIBUTE *ex; 88169689Skan 89169689Skan if (sk == NULL) return(-1); 90169689Skan lastpos++; 91169689Skan if (lastpos < 0) 92169689Skan lastpos=0; 93169689Skan n=sk_X509_ATTRIBUTE_num(sk); 9490075Sobrien for ( ; lastpos < n; lastpos++) 9590075Sobrien { 9690075Sobrien ex=sk_X509_ATTRIBUTE_value(sk,lastpos); 9790075Sobrien if (OBJ_cmp(ex->object,obj) == 0) 98169689Skan return(lastpos); 9990075Sobrien } 10090075Sobrien return(-1); 10190075Sobrien} 10290075Sobrien 10390075SobrienX509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc) 10490075Sobrien{ 105132718Skan if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 106169689Skan return NULL; 107132718Skan else 108132718Skan return sk_X509_ATTRIBUTE_value(x,loc); 109132718Skan} 110132718Skan 111169689SkanX509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc) 112132718Skan{ 113132718Skan X509_ATTRIBUTE *ret; 114132718Skan 115132718Skan if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) 116132718Skan return(NULL); 117132718Skan ret=sk_X509_ATTRIBUTE_delete(x,loc); 11890075Sobrien return(ret); 11990075Sobrien} 12090075Sobrien 12190075SobrienSTACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x, 12290075Sobrien X509_ATTRIBUTE *attr) 12390075Sobrien{ 12490075Sobrien X509_ATTRIBUTE *new_attr=NULL; 12590075Sobrien STACK_OF(X509_ATTRIBUTE) *sk=NULL; 12690075Sobrien 12790075Sobrien if (x == NULL) 12890075Sobrien { 12990075Sobrien X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER); 13090075Sobrien goto err2; 13190075Sobrien } 13290075Sobrien 13390075Sobrien if (*x == NULL) 13490075Sobrien { 135132718Skan if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL) 136132718Skan goto err; 137132718Skan } 13890075Sobrien else 13990075Sobrien sk= *x; 14090075Sobrien 14190075Sobrien if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL) 142132718Skan goto err2; 143132718Skan if (!sk_X509_ATTRIBUTE_push(sk,new_attr)) 144132718Skan goto err; 14590075Sobrien if (*x == NULL) 14690075Sobrien *x=sk; 14790075Sobrien return(sk); 14890075Sobrienerr: 14990075Sobrien X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE); 15090075Sobrienerr2: 15190075Sobrien if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr); 15290075Sobrien if (sk != NULL) sk_X509_ATTRIBUTE_free(sk); 15390075Sobrien return(NULL); 15490075Sobrien} 15590075Sobrien 15690075SobrienSTACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, 15790075Sobrien const ASN1_OBJECT *obj, int type, 15890075Sobrien const unsigned char *bytes, int len) 15990075Sobrien{ 16090075Sobrien X509_ATTRIBUTE *attr; 16190075Sobrien STACK_OF(X509_ATTRIBUTE) *ret; 16290075Sobrien attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len); 16390075Sobrien if(!attr) return 0; 16490075Sobrien ret = X509at_add1_attr(x, attr); 16590075Sobrien X509_ATTRIBUTE_free(attr); 16690075Sobrien return ret; 16790075Sobrien} 16890075Sobrien 16990075SobrienSTACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, 17090075Sobrien int nid, int type, 17190075Sobrien const unsigned char *bytes, int len) 17290075Sobrien{ 17390075Sobrien X509_ATTRIBUTE *attr; 174132718Skan STACK_OF(X509_ATTRIBUTE) *ret; 17590075Sobrien attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len); 17690075Sobrien if(!attr) return 0; 17790075Sobrien ret = X509at_add1_attr(x, attr); 17890075Sobrien X509_ATTRIBUTE_free(attr); 17990075Sobrien return ret; 18090075Sobrien} 18190075Sobrien 18290075SobrienSTACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, 18390075Sobrien const char *attrname, int type, 18490075Sobrien const unsigned char *bytes, int len) 18590075Sobrien{ 18690075Sobrien X509_ATTRIBUTE *attr; 18790075Sobrien STACK_OF(X509_ATTRIBUTE) *ret; 18890075Sobrien attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len); 18990075Sobrien if(!attr) return 0; 19090075Sobrien ret = X509at_add1_attr(x, attr); 19190075Sobrien X509_ATTRIBUTE_free(attr); 19290075Sobrien return ret; 19390075Sobrien} 19490075Sobrien 19590075Sobrienvoid *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x, 19690075Sobrien ASN1_OBJECT *obj, int lastpos, int type) 19790075Sobrien{ 19890075Sobrien int i; 19990075Sobrien X509_ATTRIBUTE *at; 20090075Sobrien i = X509at_get_attr_by_OBJ(x, obj, lastpos); 20190075Sobrien if (i == -1) 20290075Sobrien return NULL; 20390075Sobrien if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1)) 20490075Sobrien return NULL; 20590075Sobrien at = X509at_get_attr(x, i); 20690075Sobrien if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1)) 20790075Sobrien return NULL; 20890075Sobrien return X509_ATTRIBUTE_get0_data(at, 0, type, NULL); 20990075Sobrien} 21090075Sobrien 21190075SobrienX509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, 21290075Sobrien int atrtype, const void *data, int len) 21390075Sobrien{ 21490075Sobrien ASN1_OBJECT *obj; 21590075Sobrien X509_ATTRIBUTE *ret; 21690075Sobrien 21790075Sobrien obj=OBJ_nid2obj(nid); 21890075Sobrien if (obj == NULL) 21990075Sobrien { 22090075Sobrien X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID); 22190075Sobrien return(NULL); 22290075Sobrien } 22390075Sobrien ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len); 22490075Sobrien if (ret == NULL) ASN1_OBJECT_free(obj); 22590075Sobrien return(ret); 22690075Sobrien} 22790075Sobrien 22890075SobrienX509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, 22990075Sobrien const ASN1_OBJECT *obj, int atrtype, const void *data, int len) 23090075Sobrien{ 23190075Sobrien X509_ATTRIBUTE *ret; 23290075Sobrien 23390075Sobrien if ((attr == NULL) || (*attr == NULL)) 23490075Sobrien { 235117395Skan if ((ret=X509_ATTRIBUTE_new()) == NULL) 23690075Sobrien { 23790075Sobrien X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE); 238117395Skan return(NULL); 23990075Sobrien } 24090075Sobrien } 24190075Sobrien else 24290075Sobrien ret= *attr; 24390075Sobrien 24490075Sobrien if (!X509_ATTRIBUTE_set1_object(ret,obj)) 24590075Sobrien goto err; 24690075Sobrien if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len)) 24790075Sobrien goto err; 24890075Sobrien 249117395Skan if ((attr != NULL) && (*attr == NULL)) *attr=ret; 25090075Sobrien return(ret); 25196263Sobrienerr: 25290075Sobrien if ((attr == NULL) || (ret != *attr)) 253117395Skan X509_ATTRIBUTE_free(ret); 254117395Skan return(NULL); 255117395Skan} 256117395Skan 257117395SkanX509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, 258117395Skan const char *atrname, int type, const unsigned char *bytes, int len) 259117395Skan { 260117395Skan ASN1_OBJECT *obj; 261117395Skan X509_ATTRIBUTE *nattr; 262117395Skan 263117395Skan obj=OBJ_txt2obj(atrname, 0); 264117395Skan if (obj == NULL) 265117395Skan { 266117395Skan X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT, 267117395Skan X509_R_INVALID_FIELD_NAME); 26890075Sobrien ERR_add_error_data(2, "name=", atrname); 26990075Sobrien return(NULL); 27090075Sobrien } 27190075Sobrien nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len); 27290075Sobrien ASN1_OBJECT_free(obj); 27390075Sobrien return nattr; 27490075Sobrien } 27590075Sobrien 27690075Sobrienint X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj) 27790075Sobrien{ 27890075Sobrien if ((attr == NULL) || (obj == NULL)) 27990075Sobrien return(0); 28090075Sobrien ASN1_OBJECT_free(attr->object); 28190075Sobrien attr->object=OBJ_dup(obj); 28290075Sobrien return(1); 283132718Skan} 284169689Skan 28590075Sobrienint X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len) 286132718Skan{ 287169689Skan ASN1_TYPE *ttmp; 28890075Sobrien ASN1_STRING *stmp = NULL; 28990075Sobrien int atype = 0; 29090075Sobrien if (!attr) return 0; 29190075Sobrien if(attrtype & MBSTRING_FLAG) { 29290075Sobrien stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype, 29390075Sobrien OBJ_obj2nid(attr->object)); 29490075Sobrien if(!stmp) { 29590075Sobrien X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB); 29690075Sobrien return 0; 29790075Sobrien } 29890075Sobrien atype = stmp->type; 29990075Sobrien } else if (len != -1){ 30090075Sobrien if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err; 30190075Sobrien if(!ASN1_STRING_set(stmp, data, len)) goto err; 30290075Sobrien atype = attrtype; 30390075Sobrien } 30490075Sobrien if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 30590075Sobrien attr->single = 0; 30690075Sobrien /* This is a bit naughty because the attribute should really have 30790075Sobrien * at least one value but some types use and zero length SET and 30890075Sobrien * require this. 30990075Sobrien */ 31090075Sobrien if (attrtype == 0) 31190075Sobrien return 1; 31290075Sobrien if(!(ttmp = ASN1_TYPE_new())) goto err; 31390075Sobrien if ((len == -1) && !(attrtype & MBSTRING_FLAG)) 31490075Sobrien { 31590075Sobrien if (!ASN1_TYPE_set1(ttmp, attrtype, data)) 31696263Sobrien goto err; 31790075Sobrien } 31890075Sobrien else 31990075Sobrien ASN1_TYPE_set(ttmp, atype, stmp); 32090075Sobrien if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err; 321122180Skan return 1; 32290075Sobrien err: 32390075Sobrien X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE); 32490075Sobrien return 0; 32590075Sobrien} 32690075Sobrien 327169689Skanint X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr) 32890075Sobrien{ 32990075Sobrien if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set); 33090075Sobrien if(attr->value.single) return 1; 331122180Skan return 0; 33290075Sobrien} 33390075Sobrien 33490075SobrienASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr) 33590075Sobrien{ 33690075Sobrien if (attr == NULL) return(NULL); 33790075Sobrien return(attr->object); 33890075Sobrien} 33990075Sobrien 34090075Sobrienvoid *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, 341122180Skan int atrtype, void *data) 342122180Skan{ 343122180Skan ASN1_TYPE *ttmp; 344122180Skan ttmp = X509_ATTRIBUTE_get0_type(attr, idx); 345122180Skan if(!ttmp) return NULL; 34690075Sobrien if(atrtype != ASN1_TYPE_get(ttmp)){ 34790075Sobrien X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE); 34890075Sobrien return NULL; 34990075Sobrien } 35090075Sobrien return ttmp->value.ptr; 35190075Sobrien} 35290075Sobrien 35390075SobrienASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) 35490075Sobrien{ 35590075Sobrien if (attr == NULL) return(NULL); 35690075Sobrien if(idx >= X509_ATTRIBUTE_count(attr)) return NULL; 35790075Sobrien if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx); 35890075Sobrien else return attr->value.single; 35990075Sobrien} 36090075Sobrien