/* $OpenBSD: a_set.c,v 1.16 2014/07/11 08:44:47 jsing Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * 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 (tjh@cryptsoft.com). * * 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 (eay@cryptsoft.com)" * 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 (tjh@cryptsoft.com)" * * 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 #include #include #include #ifndef NO_ASN1_OLD typedef struct { unsigned char *pbData; int cbData; } MYBLOB; /* SetBlobCmp * This function compares two elements of SET_OF block */ static int SetBlobCmp(const void *elem1, const void *elem2) { const MYBLOB *b1 = (const MYBLOB *)elem1; const MYBLOB *b2 = (const MYBLOB *)elem2; int r; r = memcmp(b1->pbData, b2->pbData, b1->cbData < b2->cbData ? b1->cbData : b2->cbData); if (r != 0) return r; return b1->cbData - b2->cbData; } /* int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE) */ int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a, unsigned char **pp, i2d_of_void *i2d, int ex_tag, int ex_class, int is_set) { int ret = 0, r; int i; unsigned char *p; unsigned char *pStart, *pTempMem; MYBLOB *rgSetBlob; int totSize; if (a == NULL) return 0; for (i = sk_OPENSSL_BLOCK_num(a) - 1; i >= 0; i--) ret += i2d(sk_OPENSSL_BLOCK_value(a, i), NULL); r = ASN1_object_size(1, ret, ex_tag); if (pp == NULL) return r; p = *pp; ASN1_put_object(&p, 1, ret, ex_tag, ex_class); /* Modified by gp@nsj.co.jp */ /* And then again by Ben */ /* And again by Steve */ if (!is_set || (sk_OPENSSL_BLOCK_num(a) < 2)) { for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) i2d(sk_OPENSSL_BLOCK_value(a, i), &p); *pp = p; return r; } pStart = p; /* Catch the beg of Setblobs*/ /* In this array we will store the SET blobs */ rgSetBlob = reallocarray(NULL, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB)); if (rgSetBlob == NULL) { ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE); return 0; } for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) { rgSetBlob[i].pbData = p; /* catch each set encode blob */ i2d(sk_OPENSSL_BLOCK_value(a, i), &p); /* Length of this SetBlob */ rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; } *pp = p; totSize = p - pStart; /* This is the total size of all set blobs */ /* Now we have to sort the blobs. I am using a simple algo. * Sort ptrs * Copy to temp-mem * Copy from temp-mem to user-mem */ qsort(rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp); if ((pTempMem = malloc(totSize)) == NULL) { free(rgSetBlob); ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE); return 0; } /* Copy to temp mem */ p = pTempMem; for (i = 0; i < sk_OPENSSL_BLOCK_num(a); ++i) { memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData); p += rgSetBlob[i].cbData; } /* Copy back to user mem*/ memcpy(pStart, pTempMem, totSize); free(pTempMem); free(rgSetBlob); return r; } STACK_OF(OPENSSL_BLOCK) * d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) **a, const unsigned char **pp, long length, d2i_of_void *d2i, void (*free_func)(OPENSSL_BLOCK), int ex_tag, int ex_class) { ASN1_const_CTX c; STACK_OF(OPENSSL_BLOCK) *ret = NULL; if (a == NULL || (*a) == NULL) { if ((ret = sk_OPENSSL_BLOCK_new_null()) == NULL) { ASN1err(ASN1_F_D2I_ASN1_SET, ERR_R_MALLOC_FAILURE); goto err; } } else ret = *a; c.p = *pp; c.max = (length == 0) ? 0 : (c.p + length); c.inf = ASN1_get_object(&c.p, &c.slen, &c.tag, &c.xclass, c.max - c.p); if (c.inf & 0x80) goto err; if (ex_class != c.xclass) { ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_CLASS); goto err; } if (ex_tag != c.tag) { ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_TAG); goto err; } if (c.slen + c.p > c.max) { ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_LENGTH_ERROR); goto err; } /* check for infinite constructed - it can be as long * as the amount of data passed to us */ if (c.inf == (V_ASN1_CONSTRUCTED + 1)) c.slen = length + *pp - c.p; c.max = c.p + c.slen; while (c.p < c.max) { char *s; if (M_ASN1_D2I_end_sequence()) break; if ((s = d2i(NULL, &c.p, c.slen)) == NULL) { ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_ERROR_PARSING_SET_ELEMENT); asn1_add_error(*pp, (int)(c.p - *pp)); goto err; } if (!sk_OPENSSL_BLOCK_push(ret, s)) goto err; } if (a != NULL) *a = ret; *pp = c.p; return ret; err: if (ret != NULL && (a == NULL || *a != ret)) { if (free_func != NULL) sk_OPENSSL_BLOCK_pop_free(ret, free_func); else sk_OPENSSL_BLOCK_free(ret); } return NULL; } #endif