/* * ==================================================================== * Copyright (c) 1999 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). * */ /* * Copyright 2002, 2003 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * * All of the functions included here are internal to the pkcs12 functions * in this library. None of these are exposed. */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include /* * asc2bmpstring - Convert a regular C ASCII string to an ASn1_STRING in * ASN1_BMPSTRING format. * * Arguments: * str - String to be convered. * len - Length of the string. * * Returns: * == NULL - An error occurred. Error information (accessible by * ERR_get_error()) is set. * != NULL - Points to an ASN1_BMPSTRING structure with the converted * string as a value. */ ASN1_BMPSTRING * asc2bmpstring(const char *str, int len) { ASN1_BMPSTRING *bmp = NULL; uchar_t *uni = NULL; int unilen; /* Convert the character to the bmp format. */ if (asc2uni(str, len, &uni, &unilen) == 0) { SUNWerr(SUNW_F_ASC2BMPSTRING, SUNW_R_MEMORY_FAILURE); return (NULL); } /* * Adjust for possible pair of NULL bytes at the end because * asc2uni() returns a doubly null terminated string. */ if (uni[unilen - 1] == '\0' && uni[unilen - 2] == '\0') unilen -= 2; /* Construct comparison string with correct format */ bmp = M_ASN1_BMPSTRING_new(); if (bmp == NULL) { SUNWerr(SUNW_F_ASC2BMPSTRING, SUNW_R_MEMORY_FAILURE); OPENSSL_free(uni); return (NULL); } bmp->data = uni; bmp->length = unilen; return (bmp); } /* * utf82ascstr - Convert a UTF8STRING string to a regular C ASCII string. * This goes through an intermediate step with a ASN1_STRING type of * IA5STRING (International Alphabet 5, which is the same as ASCII). * * Arguments: * str - UTF8STRING to be converted. * * Returns: * == NULL - An error occurred. Error information (accessible by * ERR_get_error()) is set. * != NULL - Points to a NULL-termianted ASCII string. The caller must * free it. */ uchar_t * utf82ascstr(ASN1_UTF8STRING *ustr) { ASN1_STRING tmpstr; ASN1_STRING *astr = &tmpstr; uchar_t *retstr = NULL; int mbflag; int ret; if (ustr == NULL || ustr->type != V_ASN1_UTF8STRING) { SUNWerr(SUNW_F_UTF82ASCSTR, SUNW_R_INVALID_ARG); return (NULL); } mbflag = MBSTRING_ASC; tmpstr.data = NULL; tmpstr.length = 0; ret = ASN1_mbstring_copy(&astr, ustr->data, ustr->length, mbflag, B_ASN1_IA5STRING); if (ret < 0) { SUNWerr(SUNW_F_UTF82ASCSTR, SUNW_R_STR_CONVERT_ERR); return (NULL); } retstr = OPENSSL_malloc(astr->length + 1); if (retstr == NULL) { SUNWerr(SUNW_F_UTF82ASCSTR, SUNW_R_MEMORY_FAILURE); return (NULL); } (void) memcpy(retstr, astr->data, astr->length); retstr[astr->length] = '\0'; OPENSSL_free(astr->data); return (retstr); } /* * set_results - Given two pointers to stacks of private keys, certs or CA * CA certs, either copy the second stack to the first, or append the * contents of the second to the first. * * Arguments: * pkeys - Points to stack of pkeys * work_kl - Points to working stack of pkeys * certs - Points to stack of certs * work_cl - Points to working stack of certs * cacerts - Points to stack of CA certs * work_ca - Points to working stack of CA certs * xtrakeys - Points to stack of unmatcned pkeys * work_xl - Points to working stack of unmatcned pkeys * * The arguments are in pairs. The first of each pair points to a stack * of keys or certs. The second of the pair points at a 'working stack' * of the same type of entities. Actions taken are as follows: * * - If either the first or second argument is NULL, or if there are no * members in the second stack, there is nothing to do. * - If the first argument points to a pointer which is NULL, then there * is no existing stack for the first argument. Copy the stack pointer * from the second argument to the first argument and NULL out the stack * pointer for the second. * - Otherwise, go through the elements of the second stack, removing each * and adding it to the first stack. * * Returns: * == -1 - An error occurred. Call ERR_get_error() to get error information. * == 0 - No matching returns were found. * > 0 - This is the arithmetic 'or' of the FOUND_* bits that indicate which * of the requested entries were manipulated. */ int set_results(STACK_OF(EVP_PKEY) **pkeys, STACK_OF(EVP_PKEY) **work_kl, STACK_OF(X509) **certs, STACK_OF(X509) **work_cl, STACK_OF(X509) **cacerts, STACK_OF(X509) **work_ca, STACK_OF(EVP_PKEY) **xtrakeys, STACK_OF(EVP_PKEY) **work_xl) { int retval = 0; if (pkeys != NULL && work_kl != NULL && *work_kl != NULL && sk_EVP_PKEY_num(*work_kl) > 0) { if (*pkeys == NULL) { *pkeys = *work_kl; *work_kl = NULL; } else { if (sunw_append_keys(*pkeys, *work_kl) < 0) { return (-1); } } retval |= FOUND_PKEY; } if (certs != NULL && work_cl != NULL && *work_cl != NULL && sk_X509_num(*work_cl) > 0) { if (*certs == NULL) { *certs = *work_cl; *work_cl = NULL; } else { if (move_certs(*certs, *work_cl) < 0) { return (-1); } } retval |= FOUND_CERT; } if (cacerts != NULL && work_ca != NULL && *work_ca != NULL && sk_X509_num(*work_ca) > 0) { if (*cacerts == NULL) { *cacerts = *work_ca; *work_ca = NULL; } else { if (move_certs(*cacerts, *work_ca) < 0) { return (-1); } } retval |= FOUND_CA_CERTS; } if (xtrakeys != NULL && work_xl != NULL && *work_xl != NULL && sk_EVP_PKEY_num(*work_xl) > 0) { if (*xtrakeys == NULL) { *xtrakeys = *work_xl; *work_xl = NULL; } else { if (sunw_append_keys(*xtrakeys, *work_xl) < 0) { return (-1); } } retval |= FOUND_XPKEY; } return (retval); } /* * find_attr - Look for a given attribute of the type associated with the NID. * * Arguments: * nid - NID for the attribute to be found (either NID_friendlyName or * NID_locakKeyId) * str - ASN1_STRING-type structure containing the value to be found, * FriendlyName expects a ASN1_BMPSTRING and localKeyID uses a * ASN1_STRING. * kl - Points to a stack of private keys. * pkey - Points at a location where the address of the matching private * key will be stored. * cl - Points to a stack of client certs with matching private keys. * cert - Points to locaiton where the address of the matching client cert * will be returned * * This function is designed to process lists of certs and private keys. * This is made complex because these the attributes are stored differently * for certs and for keys. For certs, only a few attributes are retained. * FriendlyName is stored in the aux structure, under the name 'alias'. * LocalKeyId is also stored in the aux structure, under the name 'keyid'. * A pkey structure has a stack of attributes. * * The basic approach is: * - If there there is no stack of certs but a stack of private keys exists, * search the stack of keys for a match. Alternately, if there is a stack * of certs and no private keys, search the certs. * * - If there are both certs and keys, assume that the matching certs and * keys are in their respective stacks, with matching entries in the same * order. Search for the name or keyid in the stack of certs. If it is * not found, then this function returns 0 (nothing found). * * - Once a cert is found, verify that the key actually matches by * comparing the private key with the public key (in the cert). * If they don't match, return an error. * * A pointer to cert and/or pkey which matches the name or keyid is stored * in the return arguments. * * Returns: * 0 - No matches were found. * > 0 - Bits set based on FOUND_* definitions, indicating what was found. * This can be FOUND_PKEY, FOUND_CERT or (FOUND_PKEY | FOUND_CERT). */ int find_attr(int nid, ASN1_STRING *str, STACK_OF(EVP_PKEY) *kl, EVP_PKEY **pkey, STACK_OF(X509) *cl, X509 **cert) { ASN1_UTF8STRING *ustr = NULL; ASN1_STRING *s; ASN1_TYPE *t; EVP_PKEY *p; uchar_t *fname = NULL; X509 *x; int found = 0; int chkcerts; int len; int res; int c = -1; int k = -1; chkcerts = (cert != NULL || pkey != NULL) && cl != NULL; if (chkcerts && nid == NID_friendlyName && str->type == V_ASN1_BMPSTRING) { ustr = ASN1_UTF8STRING_new(); if (ustr == NULL) { SUNWerr(SUNW_F_FINDATTR, SUNW_R_MEMORY_FAILURE); return (0); } len = ASN1_STRING_to_UTF8(&fname, str); if (fname == NULL) { ASN1_UTF8STRING_free(ustr); SUNWerr(SUNW_F_FINDATTR, SUNW_R_STR_CONVERT_ERR); return (0); } if (ASN1_STRING_set(ustr, fname, len) == 0) { ASN1_UTF8STRING_free(ustr); OPENSSL_free(fname); SUNWerr(SUNW_F_FINDATTR, SUNW_R_MEMORY_FAILURE); return (0); } } if (chkcerts) { for (c = 0; c < sk_X509_num(cl); c++) { res = -1; x = sk_X509_value(cl, c); if (nid == NID_friendlyName && ustr != NULL) { if (x->aux == NULL || x->aux->alias == NULL) continue; s = x->aux->alias; if (s != NULL && s->type == ustr->type && s->data != NULL) { res = ASN1_STRING_cmp(s, ustr); } } else { if (x->aux == NULL || x->aux->keyid == NULL) continue; s = x->aux->keyid; if (s != NULL && s->type == str->type && s->data != NULL) { res = ASN1_STRING_cmp(s, str); } } if (res == 0) { if (cert != NULL) *cert = sk_X509_delete(cl, c); found = FOUND_CERT; break; } } if (ustr != NULL) { ASN1_UTF8STRING_free(ustr); OPENSSL_free(fname); } } if (pkey != NULL && kl != NULL) { /* * Looking for pkey to match a cert? If so, assume that * lists of certs and their matching pkeys are in the same * order. Call X509_check_private_key() to verify this * assumption. */ if (found != 0 && cert != NULL) { k = c; p = sk_EVP_PKEY_value(kl, k); if (X509_check_private_key(x, p) != 0) { if (pkey != NULL) *pkey = sk_EVP_PKEY_delete(kl, k); found |= FOUND_PKEY; } } else if (cert == NULL) { for (k = 0; k < sk_EVP_PKEY_num(kl); k++) { p = sk_EVP_PKEY_value(kl, k); if (p == NULL || p->attributes == NULL) continue; t = PKCS12_get_attr_gen(p->attributes, nid); if (t != NULL || ASN1_STRING_cmp(str, t->value.asn1_string) == 0) continue; found |= FOUND_PKEY; if (pkey != NULL) *pkey = sk_EVP_PKEY_delete(kl, k); break; } } } return (found); } /* * find_attr_by_nid - Given a ASN1_TYPE, return the offset of a X509_ATTRIBUTE * of the type specified by the given NID. * * Arguments: * attrs - Stack of attributes to search * nid - NID of the attribute being searched for * * Returns: * -1 None found * != -1 Offset of the matching attribute. */ int find_attr_by_nid(STACK_OF(X509_ATTRIBUTE) *attrs, int nid) { X509_ATTRIBUTE *a; int i; if (attrs == NULL) return (-1); for (i = 0; i < sk_X509_ATTRIBUTE_num(attrs); i++) { a = sk_X509_ATTRIBUTE_value(attrs, i); if (OBJ_obj2nid(a->object) == nid) return (i); } return (-1); } /* * get_key_cert - Get a cert and its matching key from the stacks of certs * and keys. They are removed from the stacks. * * Arguments: * n - Offset of the entries to return. * kl - Points to a stack of private keys that matches the list of * certs below. * pkey - Points at location where the address of the matching private * key will be stored. * cl - Points to a stack of client certs with matching private keys. * cert - Points to locaiton where the address of the matching client cert * will be returned * * The assumption is that the stacks of keys and certs contain key/cert pairs, * with entries in the same order and hence at the same offset. Provided * the key and cert selected match, each will be removed from its stack and * returned. * * A stack of certs can be passed in without a stack of private keys, and vise * versa. In that case, the indicated key/cert will be returned. * * Returns: * 0 - No matches were found. * > 0 - Bits set based on FOUND_* definitions, indicating what is returned. * This can be FOUND_PKEY, FOUND_CERT or (FOUND_PKEY | FOUND_CERT). */ int get_key_cert(int n, STACK_OF(EVP_PKEY) *kl, EVP_PKEY **pkey, STACK_OF(X509) *cl, X509 **cert) { int retval = 0; int nk; int nc; nk = (kl != NULL) ? sk_EVP_PKEY_num(kl) : 0; nc = (cl != NULL) ? sk_X509_num(cl) : 0; if (pkey != NULL && *pkey == NULL) { if (nk > 0 && n >= 0 || n < nk) { *pkey = sk_EVP_PKEY_delete(kl, n); if (*pkey != NULL) retval |= FOUND_PKEY; } } if (cert != NULL && *cert == NULL) { if (nc > 0 && n >= 0 && n < nc) { *cert = sk_X509_delete(cl, n); if (*cert != NULL) retval |= FOUND_CERT; } } return (retval); } /* * type2attrib - Given a ASN1_TYPE, return a X509_ATTRIBUTE of the type * specified by the given NID. * * Arguments: * ty - Type structure to be made into an attribute * nid - NID of the attribute * * Returns: * NULL An error occurred. * != NULL An X509_ATTRIBUTE structure. */ X509_ATTRIBUTE * type2attrib(ASN1_TYPE *ty, int nid) { X509_ATTRIBUTE *a; if ((a = X509_ATTRIBUTE_new()) == NULL || (a->value.set = sk_ASN1_TYPE_new_null()) == NULL || sk_ASN1_TYPE_push(a->value.set, ty) == 0) { if (a != NULL) X509_ATTRIBUTE_free(a); SUNWerr(SUNW_F_TYPE2ATTRIB, SUNW_R_MEMORY_FAILURE); return (NULL); } a->single = 0; a->object = OBJ_nid2obj(nid); return (a); } /* * attrib2type - Given a X509_ATTRIBUTE, return pointer to the ASN1_TYPE * component * * Arguments: * attr - Attribute structure containing a type. * * Returns: * NULL An error occurred. * != NULL An ASN1_TYPE structure. */ ASN1_TYPE * attrib2type(X509_ATTRIBUTE *attr) { ASN1_TYPE *ty = NULL; if (attr == NULL || attr->single == 1) return (NULL); if (sk_ASN1_TYPE_num(attr->value.set) > 0) ty = sk_ASN1_TYPE_value(attr->value.set, 0); return (ty); } /* * move_certs - Given two stacks of certs, remove the certs from * the second stack and append them to the first. * * Arguments: * dst - the stack to receive the certs from 'src' * src - the stack whose certs are to be moved. * * Returns: * -1 - An error occurred. The error status is set. * >= 0 - The number of certs that were copied. */ int move_certs(STACK_OF(X509) *dst, STACK_OF(X509) *src) { X509 *tmpc; int count = 0; while (sk_X509_num(src) > 0) { tmpc = sk_X509_delete(src, 0); if (sk_X509_push(dst, tmpc) == 0) { X509_free(tmpc); SUNWerr(SUNW_F_MOVE_CERTS, SUNW_R_MEMORY_FAILURE); return (-1); } count++; } return (count); } /* * print_time - Given an ASN1_TIME, print one or both of the times. * * Arguments: * fp - File to write to * t - The time to format and print. * * Returns: * 0 - Error occurred while opening or writing. * > 0 - Success. */ int print_time(FILE *fp, ASN1_TIME *t) { BIO *bp; int ret = 1; if ((bp = BIO_new(BIO_s_file())) == NULL) { return (0); } (void) BIO_set_fp(bp, fp, BIO_NOCLOSE); ret = ASN1_TIME_print(bp, t); (void) BIO_free(bp); return (ret); }