/* ssl/ssl_asn1.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 2005 Nokia. All rights reserved. * * The portions of the attached software ("Contribution") is developed by * Nokia Corporation and is licensed pursuant to the OpenSSL open source * license. * * The Contribution, originally written by Mika Kousa and Pasi Eronen of * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites * support (see RFC 4279) to OpenSSL. * * No patent licenses or other rights except those expressly stated in * the OpenSSL open source license shall be deemed granted or received * expressly, by implication, estoppel, or otherwise. * * No assurances are provided by Nokia that the Contribution does not * infringe the patent or other intellectual property rights of any third * party or that the license provides you with all the necessary rights * to make use of the Contribution. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR * OTHERWISE. */ #include <stdio.h> #include <stdlib.h> #include "ssl_locl.h" #include <openssl/asn1_mac.h> #include <openssl/objects.h> #include <openssl/x509.h> typedef struct ssl_session_asn1_st { ASN1_INTEGER version; ASN1_INTEGER ssl_version; ASN1_OCTET_STRING cipher; ASN1_OCTET_STRING comp_id; ASN1_OCTET_STRING master_key; ASN1_OCTET_STRING session_id; ASN1_OCTET_STRING session_id_context; ASN1_OCTET_STRING key_arg; #ifndef OPENSSL_NO_KRB5 ASN1_OCTET_STRING krb5_princ; #endif /* OPENSSL_NO_KRB5 */ ASN1_INTEGER time; ASN1_INTEGER timeout; ASN1_INTEGER verify_result; #ifndef OPENSSL_NO_TLSEXT ASN1_OCTET_STRING tlsext_hostname; ASN1_INTEGER tlsext_tick_lifetime; ASN1_OCTET_STRING tlsext_tick; #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_PSK ASN1_OCTET_STRING psk_identity_hint; ASN1_OCTET_STRING psk_identity; #endif /* OPENSSL_NO_PSK */ } SSL_SESSION_ASN1; int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp) { #define LSIZE2 (sizeof(long)*2) int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0; unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2]; unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2]; #ifndef OPENSSL_NO_TLSEXT int v6=0,v9=0,v10=0; unsigned char ibuf6[LSIZE2]; #endif #ifndef OPENSSL_NO_COMP unsigned char cbuf; int v11=0; #endif long l; SSL_SESSION_ASN1 a; M_ASN1_I2D_vars(in); if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0))) return(0); /* Note that I cheat in the following 2 assignments. I know * that if the ASN1_INTEGER passed to ASN1_INTEGER_set * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed. * This is a bit evil but makes things simple, no dynamic allocation * to clean up :-) */ a.version.length=LSIZE2; a.version.type=V_ASN1_INTEGER; a.version.data=ibuf1; ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION); a.ssl_version.length=LSIZE2; a.ssl_version.type=V_ASN1_INTEGER; a.ssl_version.data=ibuf2; ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version); a.cipher.type=V_ASN1_OCTET_STRING; a.cipher.data=buf; if (in->cipher == NULL) l=in->cipher_id; else l=in->cipher->id; if (in->ssl_version == SSL2_VERSION) { a.cipher.length=3; buf[0]=((unsigned char)(l>>16L))&0xff; buf[1]=((unsigned char)(l>> 8L))&0xff; buf[2]=((unsigned char)(l ))&0xff; } else { a.cipher.length=2; buf[0]=((unsigned char)(l>>8L))&0xff; buf[1]=((unsigned char)(l ))&0xff; } #ifndef OPENSSL_NO_COMP if (in->compress_meth) { cbuf = (unsigned char)in->compress_meth; a.comp_id.length = 1; a.comp_id.type = V_ASN1_OCTET_STRING; a.comp_id.data = &cbuf; } #endif a.master_key.length=in->master_key_length; a.master_key.type=V_ASN1_OCTET_STRING; a.master_key.data=in->master_key; a.session_id.length=in->session_id_length; a.session_id.type=V_ASN1_OCTET_STRING; a.session_id.data=in->session_id; a.session_id_context.length=in->sid_ctx_length; a.session_id_context.type=V_ASN1_OCTET_STRING; a.session_id_context.data=in->sid_ctx; a.key_arg.length=in->key_arg_length; a.key_arg.type=V_ASN1_OCTET_STRING; a.key_arg.data=in->key_arg; #ifndef OPENSSL_NO_KRB5 if (in->krb5_client_princ_len) { a.krb5_princ.length=in->krb5_client_princ_len; a.krb5_princ.type=V_ASN1_OCTET_STRING; a.krb5_princ.data=in->krb5_client_princ; } #endif /* OPENSSL_NO_KRB5 */ if (in->time != 0L) { a.time.length=LSIZE2; a.time.type=V_ASN1_INTEGER; a.time.data=ibuf3; ASN1_INTEGER_set(&(a.time),in->time); } if (in->timeout != 0L) { a.timeout.length=LSIZE2; a.timeout.type=V_ASN1_INTEGER; a.timeout.data=ibuf4; ASN1_INTEGER_set(&(a.timeout),in->timeout); } if (in->verify_result != X509_V_OK) { a.verify_result.length=LSIZE2; a.verify_result.type=V_ASN1_INTEGER; a.verify_result.data=ibuf5; ASN1_INTEGER_set(&a.verify_result,in->verify_result); } #ifndef OPENSSL_NO_TLSEXT if (in->tlsext_hostname) { a.tlsext_hostname.length=strlen(in->tlsext_hostname); a.tlsext_hostname.type=V_ASN1_OCTET_STRING; a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname; } if (in->tlsext_tick) { a.tlsext_tick.length= in->tlsext_ticklen; a.tlsext_tick.type=V_ASN1_OCTET_STRING; a.tlsext_tick.data=(unsigned char *)in->tlsext_tick; } if (in->tlsext_tick_lifetime_hint > 0) { a.tlsext_tick_lifetime.length=LSIZE2; a.tlsext_tick_lifetime.type=V_ASN1_INTEGER; a.tlsext_tick_lifetime.data=ibuf6; ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint); } #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_PSK if (in->psk_identity_hint) { a.psk_identity_hint.length=strlen(in->psk_identity_hint); a.psk_identity_hint.type=V_ASN1_OCTET_STRING; a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint); } if (in->psk_identity) { a.psk_identity.length=strlen(in->psk_identity); a.psk_identity.type=V_ASN1_OCTET_STRING; a.psk_identity.data=(unsigned char *)(in->psk_identity); } #endif /* OPENSSL_NO_PSK */ M_ASN1_I2D_len(&(a.version), i2d_ASN1_INTEGER); M_ASN1_I2D_len(&(a.ssl_version), i2d_ASN1_INTEGER); M_ASN1_I2D_len(&(a.cipher), i2d_ASN1_OCTET_STRING); M_ASN1_I2D_len(&(a.session_id), i2d_ASN1_OCTET_STRING); M_ASN1_I2D_len(&(a.master_key), i2d_ASN1_OCTET_STRING); #ifndef OPENSSL_NO_KRB5 if (in->krb5_client_princ_len) M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING); #endif /* OPENSSL_NO_KRB5 */ if (in->key_arg_length > 0) M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING); if (in->time != 0L) M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); if (in->timeout != 0L) M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); if (in->peer != NULL) M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3); M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4); if (in->verify_result != X509_V_OK) M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5); #ifndef OPENSSL_NO_TLSEXT if (in->tlsext_tick_lifetime_hint > 0) M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9); if (in->tlsext_tick) M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10); if (in->tlsext_hostname) M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6); #ifndef OPENSSL_NO_COMP if (in->compress_meth) M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11); #endif #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_PSK if (in->psk_identity_hint) M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7); if (in->psk_identity) M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8); #endif /* OPENSSL_NO_PSK */ M_ASN1_I2D_seq_total(); M_ASN1_I2D_put(&(a.version), i2d_ASN1_INTEGER); M_ASN1_I2D_put(&(a.ssl_version), i2d_ASN1_INTEGER); M_ASN1_I2D_put(&(a.cipher), i2d_ASN1_OCTET_STRING); M_ASN1_I2D_put(&(a.session_id), i2d_ASN1_OCTET_STRING); M_ASN1_I2D_put(&(a.master_key), i2d_ASN1_OCTET_STRING); #ifndef OPENSSL_NO_KRB5 if (in->krb5_client_princ_len) M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING); #endif /* OPENSSL_NO_KRB5 */ if (in->key_arg_length > 0) M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0); if (in->time != 0L) M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); if (in->timeout != 0L) M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); if (in->peer != NULL) M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3); M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4, v4); if (in->verify_result != X509_V_OK) M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5); #ifndef OPENSSL_NO_TLSEXT if (in->tlsext_hostname) M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6); #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_PSK if (in->psk_identity_hint) M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7); if (in->psk_identity) M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8); #endif /* OPENSSL_NO_PSK */ #ifndef OPENSSL_NO_TLSEXT if (in->tlsext_tick_lifetime_hint > 0) M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9); if (in->tlsext_tick) M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10); #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_COMP if (in->compress_meth) M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11); #endif M_ASN1_I2D_finish(); } SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp, long length) { int ssl_version=0,i; long id; ASN1_INTEGER ai,*aip; ASN1_OCTET_STRING os,*osp; M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new); aip= &ai; osp= &os; M_ASN1_D2I_Init(); M_ASN1_D2I_start_sequence(); ai.data=NULL; ai.length=0; M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER); if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } /* we don't care about the version right now :-) */ M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER); ssl_version=(int)ASN1_INTEGER_get(aip); ret->ssl_version=ssl_version; if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } os.data=NULL; os.length=0; M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); if (ssl_version == SSL2_VERSION) { if (os.length != 3) { c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; goto err; } id=0x02000000L| ((unsigned long)os.data[0]<<16L)| ((unsigned long)os.data[1]<< 8L)| (unsigned long)os.data[2]; } else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR) { if (os.length != 2) { c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; goto err; } id=0x03000000L| ((unsigned long)os.data[0]<<8L)| (unsigned long)os.data[1]; } else { c.error=SSL_R_UNKNOWN_SSL_VERSION; goto err; } ret->cipher=NULL; ret->cipher_id=id; M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); if ((ssl_version>>8) >= SSL3_VERSION_MAJOR) i=SSL3_MAX_SSL_SESSION_ID_LENGTH; else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */ i=SSL2_MAX_SSL_SESSION_ID_LENGTH; if (os.length > i) os.length = i; if (os.length > (int)sizeof(ret->session_id)) /* can't happen */ os.length = sizeof(ret->session_id); ret->session_id_length=os.length; OPENSSL_assert(os.length <= (int)sizeof(ret->session_id)); memcpy(ret->session_id,os.data,os.length); M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING); if (os.length > SSL_MAX_MASTER_KEY_LENGTH) ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH; else ret->master_key_length=os.length; memcpy(ret->master_key,os.data,ret->master_key_length); os.length=0; #ifndef OPENSSL_NO_KRB5 os.length=0; M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING); if (os.data) { if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH) ret->krb5_client_princ_len=0; else ret->krb5_client_princ_len=os.length; memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len); OPENSSL_free(os.data); os.data = NULL; os.length = 0; } else ret->krb5_client_princ_len=0; #endif /* OPENSSL_NO_KRB5 */ M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING); if (os.length > SSL_MAX_KEY_ARG_LENGTH) ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH; else ret->key_arg_length=os.length; memcpy(ret->key_arg,os.data,ret->key_arg_length); if (os.data != NULL) OPENSSL_free(os.data); ai.length=0; M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1); if (ai.data != NULL) { ret->time=ASN1_INTEGER_get(aip); OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } else ret->time=(unsigned long)time(NULL); ai.length=0; M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2); if (ai.data != NULL) { ret->timeout=ASN1_INTEGER_get(aip); OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } else ret->timeout=3; if (ret->peer != NULL) { X509_free(ret->peer); ret->peer=NULL; } M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3); os.length=0; os.data=NULL; M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4); if(os.data != NULL) { if (os.length > SSL_MAX_SID_CTX_LENGTH) { c.error=SSL_R_BAD_LENGTH; goto err; } else { ret->sid_ctx_length=os.length; memcpy(ret->sid_ctx,os.data,os.length); } OPENSSL_free(os.data); os.data=NULL; os.length=0; } else ret->sid_ctx_length=0; ai.length=0; M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5); if (ai.data != NULL) { ret->verify_result=ASN1_INTEGER_get(aip); OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } else ret->verify_result=X509_V_OK; #ifndef OPENSSL_NO_TLSEXT os.length=0; os.data=NULL; M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6); if (os.data) { ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length); OPENSSL_free(os.data); os.data = NULL; os.length = 0; } else ret->tlsext_hostname=NULL; #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_PSK os.length=0; os.data=NULL; M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7); if (os.data) { ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length); OPENSSL_free(os.data); os.data = NULL; os.length = 0; } else ret->psk_identity_hint=NULL; #endif /* OPENSSL_NO_PSK */ #ifndef OPENSSL_NO_TLSEXT ai.length=0; M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9); if (ai.data != NULL) { ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip); OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; } else if (ret->tlsext_ticklen && ret->session_id_length) ret->tlsext_tick_lifetime_hint = -1; else ret->tlsext_tick_lifetime_hint=0; os.length=0; os.data=NULL; M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10); if (os.data) { ret->tlsext_tick = os.data; ret->tlsext_ticklen = os.length; os.data = NULL; os.length = 0; } else ret->tlsext_tick=NULL; #endif /* OPENSSL_NO_TLSEXT */ #ifndef OPENSSL_NO_COMP os.length=0; os.data=NULL; M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11); if (os.data) { ret->compress_meth = os.data[0]; OPENSSL_free(os.data); os.data = NULL; } #endif M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION); }