X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_both.c;h=f68b6a9ebd0a27c08bfdc2a0b3f4f6dfb6f852fa;hp=251bcedd7d5931a6eb444385c9435c2ddbdf3ad2;hb=4b06d778ad71fc3f7bde0e607e865e7c5e07fafc;hpb=dfeab0689f69c0b4bd3480ffd37a9cacc2f17d9c diff --git a/ssl/s3_both.c b/ssl/s3_both.c index 251bcedd7d..f68b6a9ebd 100644 --- a/ssl/s3_both.c +++ b/ssl/s3_both.c @@ -55,26 +55,100 @@ * copied and put under another distribution licence * [including the GNU Public Licence.] */ +/* ==================================================================== + * Copyright (c) 1998-2002 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 +#include #include -#include "buffer.h" -#include "rand.h" -#include "objects.h" -#include "evp.h" -#include "x509.h" #include "ssl_locl.h" +#include +#include +#include +#include +#include + +/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ +int ssl3_do_write(SSL *s, int type) + { + int ret; + + ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off], + s->init_num); + if (ret < 0) return(-1); + if (type == SSL3_RT_HANDSHAKE) + /* should not be done for 'Hello Request's, but in that case + * we'll ignore the result anyway */ + ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret); + + if (ret == s->init_num) + { + if (s->msg_callback) + s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg); + return(1); + } + s->init_off+=ret; + s->init_num-=ret; + return(0); + } -#define BREAK break - -/* SSL3err(SSL_F_SSL3_GET_FINISHED,SSL_R_EXCESSIVE_MESSAGE_SIZE); - */ - -int ssl3_send_finished(s,a,b,sender,slen) -SSL *s; -int a; -int b; -unsigned char *sender; -int slen; +int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) { unsigned char *p,*d; int i; @@ -86,13 +160,13 @@ int slen; p= &(d[4]); i=s->method->ssl3_enc->final_finish_mac(s, - &(s->s3->finish_dgst1), - &(s->s3->finish_dgst2), - sender,slen,p); + sender,slen,s->s3->tmp.finish_md); + s->s3->tmp.finish_md_len = i; + memcpy(p, s->s3->tmp.finish_md, i); p+=i; l=i; -#ifdef WIN16 +#ifdef OPENSSL_SYS_WIN16 /* MSVC 1.5 does not clear the top bytes of the word unless * I do this. */ @@ -111,20 +185,17 @@ int slen; return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); } -int ssl3_get_finished(s,a,b) -SSL *s; -int a; -int b; +int ssl3_get_finished(SSL *s, int a, int b) { int al,i,ok; long n; unsigned char *p; /* the mac has already been generated when we received the - * change cipher spec message and is in s->s3->tmp.in_dgst[12] + * change cipher spec message and is in s->s3->tmp.peer_finish_md */ - n=ssl3_get_message(s, + n=s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, @@ -133,7 +204,7 @@ int b; if (!ok) return((int)n); - /* If this occurs if we has missed a message */ + /* If this occurs, we have missed a message */ if (!s->s3->change_cipher_spec) { al=SSL_AD_UNEXPECTED_MESSAGE; @@ -142,9 +213,8 @@ int b; } s->s3->change_cipher_spec=0; - p=(unsigned char *)s->init_buf->data; - - i=s->method->ssl3_enc->finish_mac_length; + p = (unsigned char *)s->init_msg; + i = s->s3->tmp.peer_finish_md_len; if (i != n) { @@ -153,7 +223,7 @@ int b; goto f_err; } - if (memcmp( p, (char *)&(s->s3->tmp.finish_md[0]),i) != 0) + if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) { al=SSL_AD_DECRYPT_ERROR; SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED); @@ -174,9 +244,7 @@ f_err: * ssl->session->read_compression assign * ssl->session->read_hash assign */ -int ssl3_send_change_cipher_spec(s,a,b) -SSL *s; -int a,b; +int ssl3_send_change_cipher_spec(SSL *s, int a, int b) { unsigned char *p; @@ -194,70 +262,81 @@ int a,b; return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC)); } -unsigned long ssl3_output_cert_chain(s,x) -SSL *s; -X509 *x; +static int ssl3_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x) + { + int n; + unsigned char *p; + + n=i2d_X509(x,NULL); + if (!BUF_MEM_grow_clean(buf,(int)(n+(*l)+3))) + { + SSLerr(SSL_F_SSL3_ADD_CERT_TO_BUF,ERR_R_BUF_LIB); + return(-1); + } + p=(unsigned char *)&(buf->data[*l]); + l2n3(n,p); + i2d_X509(x,&p); + *l+=n+3; + + return(0); + } + +unsigned long ssl3_output_cert_chain(SSL *s, X509 *x) { unsigned char *p; - int n,i; + int i; unsigned long l=7; BUF_MEM *buf; - X509_STORE_CTX xs_ctx; - X509_OBJECT obj; + int no_chain; + + if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs) + no_chain = 1; + else + no_chain = 0; /* TLSv1 sends a chain with nothing in it, instead of an alert */ buf=s->init_buf; - if (!BUF_MEM_grow(buf,(int)(10))) + if (!BUF_MEM_grow_clean(buf,10)) { SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); return(0); } if (x != NULL) { - X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL); - - for (;;) + if (no_chain) + { + if (ssl3_add_cert_to_buf(buf, &l, x)) + return(0); + } + else { - n=i2d_X509(x,NULL); - if (!BUF_MEM_grow(buf,(int)(n+l+3))) + X509_STORE_CTX xs_ctx; + + if (!X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,x,NULL)) { - SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); + SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB); return(0); } - p=(unsigned char *)&(buf->data[l]); - l2n3(n,p); - i2d_X509(x,&p); - l+=n+3; - if (X509_NAME_cmp(X509_get_subject_name(x), - X509_get_issuer_name(x)) == 0) break; - - i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509, - X509_get_issuer_name(x),&obj); - if (i <= 0) break; - x=obj.data.x509; - /* Count is one too high since the X509_STORE_get uped the - * ref count */ - X509_free(x); - } + X509_verify_cert(&xs_ctx); + for (i=0; i < sk_X509_num(xs_ctx.chain); i++) + { + x = sk_X509_value(xs_ctx.chain, i); - X509_STORE_CTX_cleanup(&xs_ctx); + if (ssl3_add_cert_to_buf(buf, &l, x)) + { + X509_STORE_CTX_cleanup(&xs_ctx); + return 0; + } + } + X509_STORE_CTX_cleanup(&xs_ctx); + } } - - /* Thwate special :-) */ - if (s->ctx->extra_certs != NULL) - for (i=0; ictx->extra_certs); i++) + /* Thawte special :-) */ + for (i=0; ictx->extra_certs); i++) { - x=(X509 *)sk_value(s->ctx->extra_certs,i); - n=i2d_X509(x,NULL); - if (!BUF_MEM_grow(buf,(int)(n+l+3))) - { - SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB); + x=sk_X509_value(s->ctx->extra_certs,i); + if (ssl3_add_cert_to_buf(buf, &l, x)) return(0); - } - p=(unsigned char *)&(buf->data[l]); - l2n3(n,p); - i2d_X509(x,&p); - l+=n+3; } l-=7; @@ -271,11 +350,12 @@ X509 *x; return(l); } -long ssl3_get_message(s,st1,stn,mt,max,ok) -SSL *s; -int st1,stn,mt; -long max; -int *ok; +/* Obtain handshake message of message type 'mt' (any if mt == -1), + * maximum acceptable body length 'max'. + * The first four bytes (msg_type and length) are read in state 'st1', + * the body is read in state 'stn'. + */ +long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) { unsigned char *p; unsigned long l; @@ -292,21 +372,51 @@ int *ok; goto f_err; } *ok=1; - return((int)s->s3->tmp.message_size); + s->init_msg = s->init_buf->data + 4; + s->init_num = (int)s->s3->tmp.message_size; + return s->init_num; } p=(unsigned char *)s->init_buf->data; - if (s->state == st1) + if (s->state == st1) /* s->init_num < 4 */ { - i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE, - (char *)&(p[s->init_num]), - 4-s->init_num); - if (i < (4-s->init_num)) + int skip_message; + + do { - *ok=0; - return(ssl3_part_read(s,i)); + while (s->init_num < 4) + { + i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE, + &p[s->init_num],4 - s->init_num, 0); + if (i <= 0) + { + s->rwstate=SSL_READING; + *ok = 0; + return i; + } + s->init_num+=i; + } + + skip_message = 0; + if (!s->server) + if (p[0] == SSL3_MT_HELLO_REQUEST) + /* The server may always send 'Hello Request' messages -- + * we are doing a handshake anyway now, so ignore them + * if their format is correct. Does not count for + * 'Finished' MAC. */ + if (p[1] == 0 && p[2] == 0 &&p[3] == 0) + { + s->init_num = 0; + skip_message = 1; + + if (s->msg_callback) + s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg); + } } + while (skip_message); + + /* s->init_num == 4 */ if ((mt >= 0) && (*p != mt)) { @@ -314,6 +424,18 @@ int *ok; SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); goto f_err; } + if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) && + (st1 == SSL3_ST_SR_CERT_A) && + (stn == SSL3_ST_SR_CERT_B)) + { + /* At this point we have got an MS SGC second client + * hello (maybe we should always allow the client to + * start a new handshake?). We need to restart the mac. + * Don't increment {num,total}_renegotiations because + * we have not completed the handshake. */ + ssl3_init_finished_mac(s); + } + s->s3->tmp.message_type= *(p++); n2l3(p,l); @@ -323,7 +445,13 @@ int *ok; SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); goto f_err; } - if (l && !BUF_MEM_grow(s->init_buf,(int)l)) + if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */ + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); + goto f_err; + } + if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4)) { SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB); goto err; @@ -331,24 +459,30 @@ int *ok; s->s3->tmp.message_size=l; s->state=stn; - s->init_num=0; + s->init_msg = s->init_buf->data + 4; + s->init_num = 0; } /* next state (stn) */ - p=(unsigned char *)s->init_buf->data; - n=s->s3->tmp.message_size; - if (n > 0) + p = s->init_msg; + n = s->s3->tmp.message_size - s->init_num; + while (n > 0) { - i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE, - (char *)&(p[s->init_num]),(int)n); - if (i != (int)n) + i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0); + if (i <= 0) { - *ok=0; - return(ssl3_part_read(s,i)); + s->rwstate=SSL_READING; + *ok = 0; + return i; } + s->init_num += i; + n -= i; } + ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4); + if (s->msg_callback) + s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg); *ok=1; - return(n); + return s->init_num; f_err: ssl3_send_alert(s,SSL3_AL_FATAL,al); err: @@ -356,12 +490,10 @@ err: return(-1); } -int ssl_cert_type(x,pkey) -X509 *x; -EVP_PKEY *pkey; +int ssl_cert_type(X509 *x, EVP_PKEY *pkey) { EVP_PKEY *pk; - int ret= -1,i,j; + int ret= -1,i; if (pkey == NULL) pk=X509_get_pubkey(x); @@ -373,42 +505,31 @@ EVP_PKEY *pkey; if (i == EVP_PKEY_RSA) { ret=SSL_PKEY_RSA_ENC; - if (x != NULL) - { - j=X509_get_ext_count(x); - /* check to see if this is a signing only certificate */ - /* EAY EAY EAY EAY */ - } } else if (i == EVP_PKEY_DSA) { ret=SSL_PKEY_DSA_SIGN; } - else if (i == EVP_PKEY_DH) +#ifndef OPENSSL_NO_EC + else if (i == EVP_PKEY_EC) { - /* if we just have a key, we needs to be guess */ - - if (x == NULL) - ret=SSL_PKEY_DH_DSA; - else - { - j=X509_get_signature_type(x); - if (j == EVP_PKEY_RSA) - ret=SSL_PKEY_DH_RSA; - else if (j== EVP_PKEY_DSA) - ret=SSL_PKEY_DH_DSA; - else ret= -1; - } + ret = SSL_PKEY_ECC; + } +#endif + else if (i == NID_id_GostR3410_94 || i == NID_id_GostR3410_94_cc) + { + ret = SSL_PKEY_GOST94; + } + else if (i == NID_id_GostR3410_2001 || i == NID_id_GostR3410_2001_cc) + { + ret = SSL_PKEY_GOST01; } - else - ret= -1; - err: + if(!pkey) EVP_PKEY_free(pk); return(ret); } -int ssl_verify_alarm_type(type) -long type; +int ssl_verify_alarm_type(long type) { int al; @@ -416,6 +537,7 @@ long type; { case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: case X509_V_ERR_UNABLE_TO_GET_CRL: + case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: al=SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: @@ -427,6 +549,8 @@ long type; case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: case X509_V_ERR_CERT_NOT_YET_VALID: case X509_V_ERR_CRL_NOT_YET_VALID: + case X509_V_ERR_CERT_UNTRUSTED: + case X509_V_ERR_CERT_REJECTED: al=SSL_AD_BAD_CERTIFICATE; break; case X509_V_ERR_CERT_SIGNATURE_FAILURE: @@ -448,11 +572,16 @@ long type; case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: case X509_V_ERR_CERT_CHAIN_TOO_LONG: + case X509_V_ERR_PATH_LENGTH_EXCEEDED: + case X509_V_ERR_INVALID_CA: al=SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_APPLICATION_VERIFICATION: al=SSL_AD_HANDSHAKE_FAILURE; break; + case X509_V_ERR_INVALID_PURPOSE: + al=SSL_AD_UNSUPPORTED_CERTIFICATE; + break; default: al=SSL_AD_CERTIFICATE_UNKNOWN; break; @@ -460,34 +589,179 @@ long type; return(al); } -int ssl3_setup_buffers(s) -SSL *s; +#ifndef OPENSSL_NO_BUF_FREELISTS +/* On some platforms, malloc() performance is bad enough that you can't just + * free() and malloc() buffers all the time, so we need to use freelists from + * unused buffers. Currently, each freelist holds memory chunks of only a + * given size (list->chunklen); other sized chunks are freed and malloced. + * This doesn't help much if you're using many different SSL option settings + * with a given context. (The options affecting buffer size are + * max_send_fragment, read buffer vs write buffer, + * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and + * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every + * possible size is not an option, since max_send_fragment can take on many + * different values. + * + * If you are on a platform with a slow malloc(), and you're using SSL + * connections with many different settings for these options, and you need to + * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options: + * - Link against a faster malloc implementation. + * - Use a separate SSL_CTX for each option set. + * - Improve this code. + */ +static void * +freelist_extract(SSL_CTX *ctx, int for_read, int sz) + { + SSL3_BUF_FREELIST *list; + SSL3_BUF_FREELIST_ENTRY *ent = NULL; + void *result = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); + list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; + if (list != NULL && sz == (int)list->chunklen) + ent = list->head; + if (ent != NULL) + { + list->head = ent->next; + result = ent; + if (--list->len == 0) + list->chunklen = 0; + } + CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); + if (!result) + result = OPENSSL_malloc(sz); + return result; +} + +static void +freelist_insert(SSL_CTX *ctx, int for_read, size_t sz, void *mem) + { + SSL3_BUF_FREELIST *list; + SSL3_BUF_FREELIST_ENTRY *ent; + + CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); + list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; + if (list != NULL && + (sz == list->chunklen || list->chunklen == 0) && + list->len < ctx->freelist_max_len && + sz >= sizeof(*ent)) + { + list->chunklen = sz; + ent = mem; + ent->next = list->head; + list->head = ent; + ++list->len; + mem = NULL; + } + + CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); + if (mem) + OPENSSL_free(mem); + } +#else +#define freelist_extract(c,fr,sz) OPENSSL_malloc(sz) +#define freelist_insert(c,fr,sz,m) OPENSSL_free(m) +#endif + +int ssl3_setup_read_buffer(SSL *s) { unsigned char *p; - unsigned int extra; + size_t len,align=0; + +#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 + align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1); +#endif if (s->s3->rbuf.buf == NULL) { + len = SSL3_RT_MAX_PLAIN_LENGTH + + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + + SSL3_RT_HEADER_LENGTH + align; if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) - extra=SSL3_RT_MAX_EXTRA; - else - extra=0; - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra)) - == NULL) + { + s->s3->init_extra = 1; + len += SSL3_RT_MAX_EXTRA; + } +#ifndef OPENSSL_NO_COMP + if (!(s->options & SSL_OP_NO_COMPRESSION)) + len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; +#endif + if ((p=freelist_extract(s->ctx, 1, len)) == NULL) goto err; - s->s3->rbuf.buf=p; + s->s3->rbuf.buf = p; + s->s3->rbuf.len = len; } + s->packet= &(s->s3->rbuf.buf[0]); + return 1; + +err: + SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER,ERR_R_MALLOC_FAILURE); + return 0; + } + +int ssl3_setup_write_buffer(SSL *s) + { + unsigned char *p; + size_t len,align=0; + +#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 + align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1); +#endif + if (s->s3->wbuf.buf == NULL) { - if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE)) - == NULL) + len = s->max_send_fragment + + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + + SSL3_RT_HEADER_LENGTH + align; +#ifndef OPENSSL_NO_COMP + if (!(s->options & SSL_OP_NO_COMPRESSION)) + len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; +#endif + if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) + len += SSL3_RT_HEADER_LENGTH + align + + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD; + + if ((p=freelist_extract(s->ctx, 0, len)) == NULL) goto err; - s->s3->wbuf.buf=p; + s->s3->wbuf.buf = p; + s->s3->wbuf.len = len; } - s->packet= &(s->s3->rbuf.buf[0]); - return(1); + + return 1; + err: - SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE); - return(0); + SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER,ERR_R_MALLOC_FAILURE); + return 0; + } + + +int ssl3_setup_buffers(SSL *s) + { + if (!ssl3_setup_read_buffer(s)) + return 0; + if (!ssl3_setup_write_buffer(s)) + return 0; + return 1; + } + +int ssl3_release_write_buffer(SSL *s) + { + if (s->s3->wbuf.buf != NULL) + { + freelist_insert(s->ctx, 0, s->s3->wbuf.len, s->s3->wbuf.buf); + s->s3->wbuf.buf = NULL; + } + return 1; + } + +int ssl3_release_read_buffer(SSL *s) + { + if (s->s3->rbuf.buf != NULL) + { + freelist_insert(s->ctx, 1, s->s3->rbuf.len, s->s3->rbuf.buf); + s->s3->rbuf.buf = NULL; + } + return 1; } +