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Diffstat (limited to 'crypto/openssl/ssl/ssl_ciph.c')
| -rw-r--r-- | crypto/openssl/ssl/ssl_ciph.c | 1386 |
1 files changed, 1386 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/ssl_ciph.c b/crypto/openssl/ssl/ssl_ciph.c new file mode 100644 index 0000000..a34680e --- /dev/null +++ b/crypto/openssl/ssl/ssl_ciph.c @@ -0,0 +1,1386 @@ +/* ssl/ssl_ciph.c */ +/* 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.] + */ +/* ==================================================================== + * Copyright (c) 1998-2006 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 + * openssl-core@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 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * ECC cipher suite support in OpenSSL originally developed by + * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + */ +#include <stdio.h> +#include <openssl/objects.h> +#ifndef OPENSSL_NO_COMP +#include <openssl/comp.h> +#endif + +#include "ssl_locl.h" + +#define SSL_ENC_DES_IDX 0 +#define SSL_ENC_3DES_IDX 1 +#define SSL_ENC_RC4_IDX 2 +#define SSL_ENC_RC2_IDX 3 +#define SSL_ENC_IDEA_IDX 4 +#define SSL_ENC_eFZA_IDX 5 +#define SSL_ENC_NULL_IDX 6 +#define SSL_ENC_AES128_IDX 7 +#define SSL_ENC_AES256_IDX 8 +#define SSL_ENC_CAMELLIA128_IDX 9 +#define SSL_ENC_CAMELLIA256_IDX 10 +#define SSL_ENC_SEED_IDX 11 +#define SSL_ENC_NUM_IDX 12 + + +static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ + NULL,NULL,NULL,NULL,NULL,NULL, + }; + +#define SSL_COMP_NULL_IDX 0 +#define SSL_COMP_ZLIB_IDX 1 +#define SSL_COMP_NUM_IDX 2 + +static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; + +#define SSL_MD_MD5_IDX 0 +#define SSL_MD_SHA1_IDX 1 +#define SSL_MD_NUM_IDX 2 +static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ + NULL,NULL, + }; + +#define CIPHER_ADD 1 +#define CIPHER_KILL 2 +#define CIPHER_DEL 3 +#define CIPHER_ORD 4 +#define CIPHER_SPECIAL 5 + +typedef struct cipher_order_st + { + SSL_CIPHER *cipher; + int active; + int dead; + struct cipher_order_st *next,*prev; + } CIPHER_ORDER; + +static const SSL_CIPHER cipher_aliases[]={ + /* Don't include eNULL unless specifically enabled. */ + /* Don't include ECC in ALL because these ciphers are not yet official. */ + {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */ + /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ + {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ + {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ + {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, + {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, + {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ + {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, + {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, + + {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, +#ifndef OPENSSL_NO_IDEA + {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, +#endif + {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, + + {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, + {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, + {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, + + {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, + {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, + {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, + {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, + {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, + + {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, + {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, + {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, + + {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, + {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, + {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, + {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, + {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, + {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, + {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, + {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE}, + }; + +void ssl_load_ciphers(void) + { + ssl_cipher_methods[SSL_ENC_DES_IDX]= + EVP_get_cipherbyname(SN_des_cbc); + ssl_cipher_methods[SSL_ENC_3DES_IDX]= + EVP_get_cipherbyname(SN_des_ede3_cbc); + ssl_cipher_methods[SSL_ENC_RC4_IDX]= + EVP_get_cipherbyname(SN_rc4); + ssl_cipher_methods[SSL_ENC_RC2_IDX]= + EVP_get_cipherbyname(SN_rc2_cbc); +#ifndef OPENSSL_NO_IDEA + ssl_cipher_methods[SSL_ENC_IDEA_IDX]= + EVP_get_cipherbyname(SN_idea_cbc); +#else + ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; +#endif + ssl_cipher_methods[SSL_ENC_AES128_IDX]= + EVP_get_cipherbyname(SN_aes_128_cbc); + ssl_cipher_methods[SSL_ENC_AES256_IDX]= + EVP_get_cipherbyname(SN_aes_256_cbc); + ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= + EVP_get_cipherbyname(SN_camellia_128_cbc); + ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= + EVP_get_cipherbyname(SN_camellia_256_cbc); + ssl_cipher_methods[SSL_ENC_SEED_IDX]= + EVP_get_cipherbyname(SN_seed_cbc); + + ssl_digest_methods[SSL_MD_MD5_IDX]= + EVP_get_digestbyname(SN_md5); + ssl_digest_methods[SSL_MD_SHA1_IDX]= + EVP_get_digestbyname(SN_sha1); + } + + +#ifndef OPENSSL_NO_COMP + +static int sk_comp_cmp(const SSL_COMP * const *a, + const SSL_COMP * const *b) + { + return((*a)->id-(*b)->id); + } + +static void load_builtin_compressions(void) + { + int got_write_lock = 0; + + CRYPTO_r_lock(CRYPTO_LOCK_SSL); + if (ssl_comp_methods == NULL) + { + CRYPTO_r_unlock(CRYPTO_LOCK_SSL); + CRYPTO_w_lock(CRYPTO_LOCK_SSL); + got_write_lock = 1; + + if (ssl_comp_methods == NULL) + { + SSL_COMP *comp = NULL; + + MemCheck_off(); + ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); + if (ssl_comp_methods != NULL) + { + comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); + if (comp != NULL) + { + comp->method=COMP_zlib(); + if (comp->method + && comp->method->type == NID_undef) + OPENSSL_free(comp); + else + { + comp->id=SSL_COMP_ZLIB_IDX; + comp->name=comp->method->name; + sk_SSL_COMP_push(ssl_comp_methods,comp); + } + } + } + MemCheck_on(); + } + } + + if (got_write_lock) + CRYPTO_w_unlock(CRYPTO_LOCK_SSL); + else + CRYPTO_r_unlock(CRYPTO_LOCK_SSL); + } +#endif + +int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, + const EVP_MD **md, SSL_COMP **comp) + { + int i; + SSL_CIPHER *c; + + c=s->cipher; + if (c == NULL) return(0); + if (comp != NULL) + { + SSL_COMP ctmp; +#ifndef OPENSSL_NO_COMP + load_builtin_compressions(); +#endif + + *comp=NULL; + ctmp.id=s->compress_meth; + if (ssl_comp_methods != NULL) + { + i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); + if (i >= 0) + *comp=sk_SSL_COMP_value(ssl_comp_methods,i); + else + *comp=NULL; + } + } + + if ((enc == NULL) || (md == NULL)) return(0); + + switch (c->algorithms & SSL_ENC_MASK) + { + case SSL_DES: + i=SSL_ENC_DES_IDX; + break; + case SSL_3DES: + i=SSL_ENC_3DES_IDX; + break; + case SSL_RC4: + i=SSL_ENC_RC4_IDX; + break; + case SSL_RC2: + i=SSL_ENC_RC2_IDX; + break; + case SSL_IDEA: + i=SSL_ENC_IDEA_IDX; + break; + case SSL_eNULL: + i=SSL_ENC_NULL_IDX; + break; + case SSL_AES: + switch(c->alg_bits) + { + case 128: i=SSL_ENC_AES128_IDX; break; + case 256: i=SSL_ENC_AES256_IDX; break; + default: i=-1; break; + } + break; + case SSL_CAMELLIA: + switch(c->alg_bits) + { + case 128: i=SSL_ENC_CAMELLIA128_IDX; break; + case 256: i=SSL_ENC_CAMELLIA256_IDX; break; + default: i=-1; break; + } + break; + case SSL_SEED: + i=SSL_ENC_SEED_IDX; + break; + + default: + i= -1; + break; + } + + if ((i < 0) || (i > SSL_ENC_NUM_IDX)) + *enc=NULL; + else + { + if (i == SSL_ENC_NULL_IDX) + *enc=EVP_enc_null(); + else + *enc=ssl_cipher_methods[i]; + } + + switch (c->algorithms & SSL_MAC_MASK) + { + case SSL_MD5: + i=SSL_MD_MD5_IDX; + break; + case SSL_SHA1: + i=SSL_MD_SHA1_IDX; + break; + default: + i= -1; + break; + } + if ((i < 0) || (i > SSL_MD_NUM_IDX)) + *md=NULL; + else + *md=ssl_digest_methods[i]; + + if ((*enc != NULL) && (*md != NULL)) + return(1); + else + return(0); + } + +#define ITEM_SEP(a) \ + (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) + +static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, + CIPHER_ORDER **tail) + { + if (curr == *tail) return; + if (curr == *head) + *head=curr->next; + if (curr->prev != NULL) + curr->prev->next=curr->next; + if (curr->next != NULL) /* should always be true */ + curr->next->prev=curr->prev; + (*tail)->next=curr; + curr->prev= *tail; + curr->next=NULL; + *tail=curr; + } + +struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, + * where 128-bit and 256-bit algorithms simply will get + * separate bits. */ + unsigned long mask; /* everything except m256 */ + unsigned long m256; /* applies to 256-bit algorithms only */ +}; + +static struct disabled_masks ssl_cipher_get_disabled(void) + { + unsigned long mask; + unsigned long m256; + struct disabled_masks ret; + + mask = SSL_kFZA; +#ifdef OPENSSL_NO_RSA + mask |= SSL_aRSA|SSL_kRSA; +#endif +#ifdef OPENSSL_NO_DSA + mask |= SSL_aDSS; +#endif +#ifdef OPENSSL_NO_DH + mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; +#endif +#ifdef OPENSSL_NO_KRB5 + mask |= SSL_kKRB5|SSL_aKRB5; +#endif +#ifdef OPENSSL_NO_ECDH + mask |= SSL_kECDH|SSL_kECDHE; +#endif +#ifdef SSL_FORBID_ENULL + mask |= SSL_eNULL; +#endif + + mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; + mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; + mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; + mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; + mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; + mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; + mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; + + mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; + mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; + + /* finally consider algorithms where mask and m256 differ */ + m256 = mask; + mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; + mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; + m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; + m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; + + ret.mask = mask; + ret.m256 = m256; + return ret; + } + +static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, + int num_of_ciphers, unsigned long mask, unsigned long m256, + CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, + CIPHER_ORDER **tail_p) + { + int i, co_list_num; + SSL_CIPHER *c; + + /* + * We have num_of_ciphers descriptions compiled in, depending on the + * method selected (SSLv2 and/or SSLv3, TLSv1 etc). + * These will later be sorted in a linked list with at most num + * entries. + */ + + /* Get the initial list of ciphers */ + co_list_num = 0; /* actual count of ciphers */ + for (i = 0; i < num_of_ciphers; i++) + { + c = ssl_method->get_cipher(i); +#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) + /* drop those that use any of that is not available */ +#ifdef OPENSSL_FIPS + if ((c != NULL) && c->valid && !IS_MASKED(c) + && (!FIPS_mode() || (c->algo_strength & SSL_FIPS))) +#else + if ((c != NULL) && c->valid && !IS_MASKED(c)) +#endif + { + co_list[co_list_num].cipher = c; + co_list[co_list_num].next = NULL; + co_list[co_list_num].prev = NULL; + co_list[co_list_num].active = 0; + co_list_num++; +#ifdef KSSL_DEBUG + printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); +#endif /* KSSL_DEBUG */ + /* + if (!sk_push(ca_list,(char *)c)) goto err; + */ + } + } + + /* + * Prepare linked list from list entries + */ + for (i = 1; i < co_list_num - 1; i++) + { + co_list[i].prev = &(co_list[i-1]); + co_list[i].next = &(co_list[i+1]); + } + if (co_list_num > 0) + { + (*head_p) = &(co_list[0]); + (*head_p)->prev = NULL; + (*head_p)->next = &(co_list[1]); + (*tail_p) = &(co_list[co_list_num - 1]); + (*tail_p)->prev = &(co_list[co_list_num - 2]); + (*tail_p)->next = NULL; + } + } + +static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, + int num_of_group_aliases, unsigned long mask, + CIPHER_ORDER *head) + { + CIPHER_ORDER *ciph_curr; + SSL_CIPHER **ca_curr; + int i; + + /* + * First, add the real ciphers as already collected + */ + ciph_curr = head; + ca_curr = ca_list; + while (ciph_curr != NULL) + { + *ca_curr = ciph_curr->cipher; + ca_curr++; + ciph_curr = ciph_curr->next; + } + + /* + * Now we add the available ones from the cipher_aliases[] table. + * They represent either an algorithm, that must be fully + * supported (not match any bit in mask) or represent a cipher + * strength value (will be added in any case because algorithms=0). + */ + for (i = 0; i < num_of_group_aliases; i++) + { + if ((i == 0) || /* always fetch "ALL" */ + !(cipher_aliases[i].algorithms & mask)) + { + *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); + ca_curr++; + } + } + + *ca_curr = NULL; /* end of list */ + } + +static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, + unsigned long algorithms, unsigned long mask, + unsigned long algo_strength, unsigned long mask_strength, + int rule, int strength_bits, CIPHER_ORDER *co_list, + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) + { + CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; + SSL_CIPHER *cp; + unsigned long ma, ma_s; + +#ifdef CIPHER_DEBUG + printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", + rule, algorithms, mask, algo_strength, mask_strength, + strength_bits); +#endif + + curr = head = *head_p; + curr2 = head; + tail2 = tail = *tail_p; + for (;;) + { + if ((curr == NULL) || (curr == tail2)) break; + curr = curr2; + curr2 = curr->next; + + cp = curr->cipher; + + /* If explicit cipher suite, match only that one for its own protocol version. + * Usual selection criteria will be used for similar ciphersuites from other version! */ + + if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) + { + if (cp->id != cipher_id) + continue; + } + + /* + * Selection criteria is either the number of strength_bits + * or the algorithm used. + */ + else if (strength_bits == -1) + { + ma = mask & cp->algorithms; + ma_s = mask_strength & cp->algo_strength; + +#ifdef CIPHER_DEBUG + printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); + printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); +#endif + /* + * Select: if none of the mask bit was met from the + * cipher or not all of the bits were met, the + * selection does not apply. + */ + if (((ma == 0) && (ma_s == 0)) || + ((ma & algorithms) != ma) || + ((ma_s & algo_strength) != ma_s)) + continue; /* does not apply */ + } + else if (strength_bits != cp->strength_bits) + continue; /* does not apply */ + +#ifdef CIPHER_DEBUG + printf("Action = %d\n", rule); +#endif + + /* add the cipher if it has not been added yet. */ + if (rule == CIPHER_ADD) + { + if (!curr->active) + { + int add_this_cipher = 1; + + if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) + { + /* Make sure "ECCdraft" ciphersuites are activated only if + * *explicitly* requested, but not implicitly (such as + * as part of the "AES" alias). */ + + add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; + } + + if (add_this_cipher) + { + ll_append_tail(&head, curr, &tail); + curr->active = 1; + } + } + } + /* Move the added cipher to this location */ + else if (rule == CIPHER_ORD) + { + if (curr->active) + { + ll_append_tail(&head, curr, &tail); + } + } + else if (rule == CIPHER_DEL) + curr->active = 0; + else if (rule == CIPHER_KILL) + { + if (head == curr) + head = curr->next; + else + curr->prev->next = curr->next; + if (tail == curr) + tail = curr->prev; + curr->active = 0; + if (curr->next != NULL) + curr->next->prev = curr->prev; + if (curr->prev != NULL) + curr->prev->next = curr->next; + curr->next = NULL; + curr->prev = NULL; + } + } + + *head_p = head; + *tail_p = tail; + } + +static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, + CIPHER_ORDER **head_p, + CIPHER_ORDER **tail_p) + { + int max_strength_bits, i, *number_uses; + CIPHER_ORDER *curr; + + /* + * This routine sorts the ciphers with descending strength. The sorting + * must keep the pre-sorted sequence, so we apply the normal sorting + * routine as '+' movement to the end of the list. + */ + max_strength_bits = 0; + curr = *head_p; + while (curr != NULL) + { + if (curr->active && + (curr->cipher->strength_bits > max_strength_bits)) + max_strength_bits = curr->cipher->strength_bits; + curr = curr->next; + } + + number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); + if (!number_uses) + { + SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); + return(0); + } + memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); + + /* + * Now find the strength_bits values actually used + */ + curr = *head_p; + while (curr != NULL) + { + if (curr->active) + number_uses[curr->cipher->strength_bits]++; + curr = curr->next; + } + /* + * Go through the list of used strength_bits values in descending + * order. + */ + for (i = max_strength_bits; i >= 0; i--) + if (number_uses[i] > 0) + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, + co_list, head_p, tail_p); + + OPENSSL_free(number_uses); + return(1); + } + +static int ssl_cipher_process_rulestr(const char *rule_str, + CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, + CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) + { + unsigned long algorithms, mask, algo_strength, mask_strength; + const char *l, *buf; + int j, multi, found, rule, retval, ok, buflen; + unsigned long cipher_id = 0, ssl_version = 0; + char ch; + + retval = 1; + l = rule_str; + for (;;) + { + ch = *l; + + if (ch == '\0') + break; /* done */ + if (ch == '-') + { rule = CIPHER_DEL; l++; } + else if (ch == '+') + { rule = CIPHER_ORD; l++; } + else if (ch == '!') + { rule = CIPHER_KILL; l++; } + else if (ch == '@') + { rule = CIPHER_SPECIAL; l++; } + else + { rule = CIPHER_ADD; } + + if (ITEM_SEP(ch)) + { + l++; + continue; + } + + algorithms = mask = algo_strength = mask_strength = 0; + + for (;;) + { + ch = *l; + buf = l; + buflen = 0; +#ifndef CHARSET_EBCDIC + while ( ((ch >= 'A') && (ch <= 'Z')) || + ((ch >= '0') && (ch <= '9')) || + ((ch >= 'a') && (ch <= 'z')) || + (ch == '-')) +#else + while ( isalnum(ch) || (ch == '-')) +#endif + { + ch = *(++l); + buflen++; + } + + if (buflen == 0) + { + /* + * We hit something we cannot deal with, + * it is no command or separator nor + * alphanumeric, so we call this an error. + */ + SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, + SSL_R_INVALID_COMMAND); + retval = found = 0; + l++; + break; + } + + if (rule == CIPHER_SPECIAL) + { + found = 0; /* unused -- avoid compiler warning */ + break; /* special treatment */ + } + + /* check for multi-part specification */ + if (ch == '+') + { + multi=1; + l++; + } + else + multi=0; + + /* + * Now search for the cipher alias in the ca_list. Be careful + * with the strncmp, because the "buflen" limitation + * will make the rule "ADH:SOME" and the cipher + * "ADH-MY-CIPHER" look like a match for buflen=3. + * So additionally check whether the cipher name found + * has the correct length. We can save a strlen() call: + * just checking for the '\0' at the right place is + * sufficient, we have to strncmp() anyway. (We cannot + * use strcmp(), because buf is not '\0' terminated.) + */ + j = found = 0; + cipher_id = 0; + ssl_version = 0; + while (ca_list[j]) + { + if (!strncmp(buf, ca_list[j]->name, buflen) && + (ca_list[j]->name[buflen] == '\0')) + { + found = 1; + break; + } + else + j++; + } + if (!found) + break; /* ignore this entry */ + + /* New algorithms: + * 1 - any old restrictions apply outside new mask + * 2 - any new restrictions apply outside old mask + * 3 - enforce old & new where masks intersect + */ + algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ + (ca_list[j]->algorithms & ~mask) | /* 2 */ + (algorithms & ca_list[j]->algorithms); /* 3 */ + mask |= ca_list[j]->mask; + algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | + (ca_list[j]->algo_strength & ~mask_strength) | + (algo_strength & ca_list[j]->algo_strength); + mask_strength |= ca_list[j]->mask_strength; + + /* explicit ciphersuite found */ + if (ca_list[j]->valid) + { + cipher_id = ca_list[j]->id; + ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; + break; + } + + if (!multi) break; + } + + /* + * Ok, we have the rule, now apply it + */ + if (rule == CIPHER_SPECIAL) + { /* special command */ + ok = 0; + if ((buflen == 8) && + !strncmp(buf, "STRENGTH", 8)) + ok = ssl_cipher_strength_sort(co_list, + head_p, tail_p); + else + SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, + SSL_R_INVALID_COMMAND); + if (ok == 0) + retval = 0; + /* + * We do not support any "multi" options + * together with "@", so throw away the + * rest of the command, if any left, until + * end or ':' is found. + */ + while ((*l != '\0') && !ITEM_SEP(*l)) + l++; + } + else if (found) + { + ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, + algo_strength, mask_strength, rule, -1, + co_list, head_p, tail_p); + } + else + { + while ((*l != '\0') && !ITEM_SEP(*l)) + l++; + } + if (*l == '\0') break; /* done */ + } + + return(retval); + } + +STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, + STACK_OF(SSL_CIPHER) **cipher_list, + STACK_OF(SSL_CIPHER) **cipher_list_by_id, + const char *rule_str) + { + int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; + unsigned long disabled_mask; + unsigned long disabled_m256; + STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; + const char *rule_p; + CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; + SSL_CIPHER **ca_list = NULL; + + /* + * Return with error if nothing to do. + */ + if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) + return NULL; + + /* + * To reduce the work to do we only want to process the compiled + * in algorithms, so we first get the mask of disabled ciphers. + */ + { + struct disabled_masks d; + d = ssl_cipher_get_disabled(); + disabled_mask = d.mask; + disabled_m256 = d.m256; + } + + /* + * Now we have to collect the available ciphers from the compiled + * in ciphers. We cannot get more than the number compiled in, so + * it is used for allocation. + */ + num_of_ciphers = ssl_method->num_ciphers(); +#ifdef KSSL_DEBUG + printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); +#endif /* KSSL_DEBUG */ + co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); + if (co_list == NULL) + { + SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); + return(NULL); /* Failure */ + } + + ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, + disabled_m256, co_list, &head, &tail); + + /* + * We also need cipher aliases for selecting based on the rule_str. + * There might be two types of entries in the rule_str: 1) names + * of ciphers themselves 2) aliases for groups of ciphers. + * For 1) we need the available ciphers and for 2) the cipher + * groups of cipher_aliases added together in one list (otherwise + * we would be happy with just the cipher_aliases table). + */ + num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); + num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; + ca_list = + (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); + if (ca_list == NULL) + { + OPENSSL_free(co_list); + SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); + return(NULL); /* Failure */ + } + ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, + (disabled_mask & disabled_m256), head); + + /* + * If the rule_string begins with DEFAULT, apply the default rule + * before using the (possibly available) additional rules. + */ + ok = 1; + rule_p = rule_str; + if (strncmp(rule_str,"DEFAULT",7) == 0) + { + ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, + co_list, &head, &tail, ca_list); + rule_p += 7; + if (*rule_p == ':') + rule_p++; + } + + if (ok && (strlen(rule_p) > 0)) + ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, + ca_list); + + OPENSSL_free(ca_list); /* Not needed anymore */ + + if (!ok) + { /* Rule processing failure */ + OPENSSL_free(co_list); + return(NULL); + } + /* + * Allocate new "cipherstack" for the result, return with error + * if we cannot get one. + */ + if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) + { + OPENSSL_free(co_list); + return(NULL); + } + + /* + * The cipher selection for the list is done. The ciphers are added + * to the resulting precedence to the STACK_OF(SSL_CIPHER). + */ + for (curr = head; curr != NULL; curr = curr->next) + { +#ifdef OPENSSL_FIPS + if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) +#else + if (curr->active) +#endif + { + sk_SSL_CIPHER_push(cipherstack, curr->cipher); +#ifdef CIPHER_DEBUG + printf("<%s>\n",curr->cipher->name); +#endif + } + } + OPENSSL_free(co_list); /* Not needed any longer */ + + tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); + if (tmp_cipher_list == NULL) + { + sk_SSL_CIPHER_free(cipherstack); + return NULL; + } + if (*cipher_list != NULL) + sk_SSL_CIPHER_free(*cipher_list); + *cipher_list = cipherstack; + if (*cipher_list_by_id != NULL) + sk_SSL_CIPHER_free(*cipher_list_by_id); + *cipher_list_by_id = tmp_cipher_list; + (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); + + sk_SSL_CIPHER_sort(*cipher_list_by_id); + return(cipherstack); + } + +char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) + { + int is_export,pkl,kl; + const char *ver,*exp_str; + const char *kx,*au,*enc,*mac; + unsigned long alg,alg2; +#ifdef KSSL_DEBUG + static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; +#else + static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; +#endif /* KSSL_DEBUG */ + + alg=cipher->algorithms; + alg2=cipher->algorithm2; + + is_export=SSL_C_IS_EXPORT(cipher); + pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); + kl=SSL_C_EXPORT_KEYLENGTH(cipher); + exp_str=is_export?" export":""; + + if (alg & SSL_SSLV2) + ver="SSLv2"; + else if (alg & SSL_SSLV3) + ver="SSLv3"; + else + ver="unknown"; + + switch (alg&SSL_MKEY_MASK) + { + case SSL_kRSA: + kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; + break; + case SSL_kDHr: + kx="DH/RSA"; + break; + case SSL_kDHd: + kx="DH/DSS"; + break; + case SSL_kKRB5: /* VRS */ + case SSL_KRB5: /* VRS */ + kx="KRB5"; + break; + case SSL_kFZA: + kx="Fortezza"; + break; + case SSL_kEDH: + kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; + break; + case SSL_kECDH: + case SSL_kECDHE: + kx=is_export?"ECDH(<=163)":"ECDH"; + break; + default: + kx="unknown"; + } + + switch (alg&SSL_AUTH_MASK) + { + case SSL_aRSA: + au="RSA"; + break; + case SSL_aDSS: + au="DSS"; + break; + case SSL_aDH: + au="DH"; + break; + case SSL_aKRB5: /* VRS */ + case SSL_KRB5: /* VRS */ + au="KRB5"; + break; + case SSL_aFZA: + case SSL_aNULL: + au="None"; + break; + case SSL_aECDSA: + au="ECDSA"; + break; + default: + au="unknown"; + break; + } + + switch (alg&SSL_ENC_MASK) + { + case SSL_DES: + enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; + break; + case SSL_3DES: + enc="3DES(168)"; + break; + case SSL_RC4: + enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") + :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); + break; + case SSL_RC2: + enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; + break; + case SSL_IDEA: + enc="IDEA(128)"; + break; + case SSL_eFZA: + enc="Fortezza"; + break; + case SSL_eNULL: + enc="None"; + break; + case SSL_AES: + switch(cipher->strength_bits) + { + case 128: enc="AES(128)"; break; + case 192: enc="AES(192)"; break; + case 256: enc="AES(256)"; break; + default: enc="AES(?""?""?)"; break; + } + break; + case SSL_CAMELLIA: + switch(cipher->strength_bits) + { + case 128: enc="Camellia(128)"; break; + case 256: enc="Camellia(256)"; break; + default: enc="Camellia(?""?""?)"; break; + } + break; + case SSL_SEED: + enc="SEED(128)"; + break; + + default: + enc="unknown"; + break; + } + + switch (alg&SSL_MAC_MASK) + { + case SSL_MD5: + mac="MD5"; + break; + case SSL_SHA1: + mac="SHA1"; + break; + default: + mac="unknown"; + break; + } + + if (buf == NULL) + { + len=128; + buf=OPENSSL_malloc(len); + if (buf == NULL) return("OPENSSL_malloc Error"); + } + else if (len < 128) + return("Buffer too small"); + +#ifdef KSSL_DEBUG + BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); +#else + BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); +#endif /* KSSL_DEBUG */ + return(buf); + } + +char *SSL_CIPHER_get_version(const SSL_CIPHER *c) + { + int i; + + if (c == NULL) return("(NONE)"); + i=(int)(c->id>>24L); + if (i == 3) + return("TLSv1/SSLv3"); + else if (i == 2) + return("SSLv2"); + else + return("unknown"); + } + +/* return the actual cipher being used */ +const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) + { + if (c != NULL) + return(c->name); + return("(NONE)"); + } + +/* number of bits for symmetric cipher */ +int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) + { + int ret=0; + + if (c != NULL) + { + if (alg_bits != NULL) *alg_bits = c->alg_bits; + ret = c->strength_bits; + } + return(ret); + } + +SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) + { + SSL_COMP *ctmp; + int i,nn; + + if ((n == 0) || (sk == NULL)) return(NULL); + nn=sk_SSL_COMP_num(sk); + for (i=0; i<nn; i++) + { + ctmp=sk_SSL_COMP_value(sk,i); + if (ctmp->id == n) + return(ctmp); + } + return(NULL); + } + +#ifdef OPENSSL_NO_COMP +void *SSL_COMP_get_compression_methods(void) + { + return NULL; + } +int SSL_COMP_add_compression_method(int id, void *cm) + { + return 1; + } + +const char *SSL_COMP_get_name(const void *comp) + { + return NULL; + } +#else +STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) + { + load_builtin_compressions(); + return(ssl_comp_methods); + } + +int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) + { + SSL_COMP *comp; + + if (cm == NULL || cm->type == NID_undef) + return 1; + + /* According to draft-ietf-tls-compression-04.txt, the + compression number ranges should be the following: + + 0 to 63: methods defined by the IETF + 64 to 192: external party methods assigned by IANA + 193 to 255: reserved for private use */ + if (id < 193 || id > 255) + { + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); + return 0; + } + + MemCheck_off(); + comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); + comp->id=id; + comp->method=cm; + load_builtin_compressions(); + if (ssl_comp_methods + && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) + { + OPENSSL_free(comp); + MemCheck_on(); + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); + return(1); + } + else if ((ssl_comp_methods == NULL) + || !sk_SSL_COMP_push(ssl_comp_methods,comp)) + { + OPENSSL_free(comp); + MemCheck_on(); + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); + return(1); + } + else + { + MemCheck_on(); + return(0); + } + } + +const char *SSL_COMP_get_name(const COMP_METHOD *comp) + { + if (comp) + return comp->name; + return NULL; + } + +#endif |
