1 files changed, 603 insertions, 0 deletions

diff --git a/src/lib/libssl/s23_srvr.c b/src/lib/libssl/s23_srvr.c
new file mode 100644
index 0000000000..e9edc34328
--- /dev/null
+++ b/src/lib/libssl/s23_srvr.c
@@ -0,0 +1,603 @@
+/* ssl/s23_srvr.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) 1998-2001 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).
+ *
+ */
+
+#include <stdio.h>
+#include "ssl_locl.h"
+#include <openssl/buffer.h>
+#include <openssl/rand.h>
+#include <openssl/objects.h>
+#include <openssl/evp.h>
+
+static SSL_METHOD *ssl23_get_server_method(int ver);
+int ssl23_get_client_hello(SSL *s);
+static SSL_METHOD *ssl23_get_server_method(int ver)
+        {
+#ifndef OPENSSL_NO_SSL2
+        if (ver == SSL2_VERSION)
+                return(SSLv2_server_method());
+#endif
+        if (ver == SSL3_VERSION)
+                return(SSLv3_server_method());
+        else if (ver == TLS1_VERSION)
+                return(TLSv1_server_method());
+        else
+                return(NULL);
+        }
+
+SSL_METHOD *SSLv23_server_method(void)
+        {
+        static int init=1;
+        static SSL_METHOD SSLv23_server_data;
+
+        if (init)
+                {
+                CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
+
+                if (init)
+                        {
+                        memcpy((char *)&SSLv23_server_data,
+                                (char *)sslv23_base_method(),sizeof(SSL_METHOD));
+                        SSLv23_server_data.ssl_accept=ssl23_accept;
+                        SSLv23_server_data.get_ssl_method=ssl23_get_server_method;
+                        init=0;
+                        }
+
+                CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
+                }
+        return(&SSLv23_server_data);
+        }
+
+int ssl23_accept(SSL *s)
+        {
+        BUF_MEM *buf;
+        unsigned long Time=time(NULL);
+        void (*cb)(const SSL *ssl,int type,int val)=NULL;
+        int ret= -1;
+        int new_state,state;
+
+        RAND_add(&Time,sizeof(Time),0);
+        ERR_clear_error();
+        clear_sys_error();
+
+        if (s->info_callback != NULL)
+                cb=s->info_callback;
+        else if (s->ctx->info_callback != NULL)
+                cb=s->ctx->info_callback;
+        
+        s->in_handshake++;
+        if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 
+
+        for (;;)
+                {
+                state=s->state;
+
+                switch(s->state)
+                        {
+                case SSL_ST_BEFORE:
+                case SSL_ST_ACCEPT:
+                case SSL_ST_BEFORE|SSL_ST_ACCEPT:
+                case SSL_ST_OK|SSL_ST_ACCEPT:
+
+                        s->server=1;
+                        if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
+
+                        /* s->version=SSL3_VERSION; */
+                        s->type=SSL_ST_ACCEPT;
+
+                        if (s->init_buf == NULL)
+                                {
+                                if ((buf=BUF_MEM_new()) == NULL)
+                                        {
+                                        ret= -1;
+                                        goto end;
+                                        }
+                                if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
+                                        {
+                                        ret= -1;
+                                        goto end;
+                                        }
+                                s->init_buf=buf;
+                                }
+
+                        ssl3_init_finished_mac(s);
+
+                        s->state=SSL23_ST_SR_CLNT_HELLO_A;
+                        s->ctx->stats.sess_accept++;
+                        s->init_num=0;
+                        break;
+
+                case SSL23_ST_SR_CLNT_HELLO_A:
+                case SSL23_ST_SR_CLNT_HELLO_B:
+
+                        s->shutdown=0;
+                        ret=ssl23_get_client_hello(s);
+                        if (ret >= 0) cb=NULL;
+                        goto end;
+                        /* break; */
+
+                default:
+                        SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE);
+                        ret= -1;
+                        goto end;
+                        /* break; */
+                        }
+
+                if ((cb != NULL) && (s->state != state))
+                        {
+                        new_state=s->state;
+                        s->state=state;
+                        cb(s,SSL_CB_ACCEPT_LOOP,1);
+                        s->state=new_state;
+                        }
+                }
+end:
+        s->in_handshake--;
+        if (cb != NULL)
+                cb(s,SSL_CB_ACCEPT_EXIT,ret);
+        return(ret);
+        }
+
+
+int ssl23_get_client_hello(SSL *s)
+        {
+        char buf_space[11]; /* Request this many bytes in initial read.
+                             * We can detect SSL 3.0/TLS 1.0 Client Hellos
+                             * ('type == 3') correctly only when the following
+                             * is in a single record, which is not guaranteed by
+                             * the protocol specification:
+                             * Byte  Content
+                             *  0     type            \
+                             *  1/2   version          > record header
+                             *  3/4   length          /
+                             *  5     msg_type        \
+                             *  6-8   length           > Client Hello message
+                             *  9/10  client_version  /
+                             */
+        char *buf= &(buf_space[0]);
+        unsigned char *p,*d,*d_len,*dd;
+        unsigned int i;
+        unsigned int csl,sil,cl;
+        int n=0,j;
+        int type=0;
+        int v[2];
+#ifndef OPENSSL_NO_RSA
+        int use_sslv2_strong=0;
+#endif
+
+        if (s->state == SSL23_ST_SR_CLNT_HELLO_A)
+                {
+                /* read the initial header */
+                v[0]=v[1]=0;
+
+                if (!ssl3_setup_buffers(s)) goto err;
+
+                n=ssl23_read_bytes(s, sizeof buf_space);
+                if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */
+
+                p=s->packet;
+
+                memcpy(buf,p,n);
+
+                if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO))
+                        {
+                        /*
+                         * SSLv2 header
+                         */
+                        if ((p[3] == 0x00) && (p[4] == 0x02))
+                                {
+                                v[0]=p[3]; v[1]=p[4];
+                                /* SSLv2 */
+                                if (!(s->options & SSL_OP_NO_SSLv2))
+                                        type=1;
+                                }
+                        else if (p[3] == SSL3_VERSION_MAJOR)
+                                {
+                                v[0]=p[3]; v[1]=p[4];
+                                /* SSLv3/TLSv1 */
+                                if (p[4] >= TLS1_VERSION_MINOR)
+                                        {
+                                        if (!(s->options & SSL_OP_NO_TLSv1))
+                                                {
+                                                s->version=TLS1_VERSION;
+                                                /* type=2; */ /* done later to survive restarts */
+                                                s->state=SSL23_ST_SR_CLNT_HELLO_B;
+                                                }
+                                        else if (!(s->options & SSL_OP_NO_SSLv3))
+                                                {
+                                                s->version=SSL3_VERSION;
+                                                /* type=2; */
+                                                s->state=SSL23_ST_SR_CLNT_HELLO_B;
+                                                }
+                                        else if (!(s->options & SSL_OP_NO_SSLv2))
+                                                {
+                                                type=1;
+                                                }
+                                        }
+                                else if (!(s->options & SSL_OP_NO_SSLv3))
+                                        {
+                                        s->version=SSL3_VERSION;
+                                        /* type=2; */
+                                        s->state=SSL23_ST_SR_CLNT_HELLO_B;
+                                        }
+                                else if (!(s->options & SSL_OP_NO_SSLv2))
+                                        type=1;
+
+                                }
+                        }
+                else if ((p[0] == SSL3_RT_HANDSHAKE) &&
+                         (p[1] == SSL3_VERSION_MAJOR) &&
+                         (p[5] == SSL3_MT_CLIENT_HELLO) &&
+                         ((p[3] == 0 && p[4] < 5 /* silly record length? */)
+                                || (p[9] == p[1])))
+                        {
+                        /*
+                         * SSLv3 or tls1 header
+                         */
+                        
+                        v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */
+                        /* We must look at client_version inside the Client Hello message
+                         * to get the correct minor version.
+                         * However if we have only a pathologically small fragment of the
+                         * Client Hello message, this would be difficult, and we'd have
+                         * to read more records to find out.
+                         * No known SSL 3.0 client fragments ClientHello like this,
+                         * so we simply assume TLS 1.0 to avoid protocol version downgrade
+                         * attacks. */
+                        if (p[3] == 0 && p[4] < 6)
+                                {
+#if 0
+                                SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL);
+                                goto err;
+#else
+                                v[1] = TLS1_VERSION_MINOR;
+#endif
+                                }
+                        else
+                                v[1]=p[10]; /* minor version according to client_version */
+                        if (v[1] >= TLS1_VERSION_MINOR)
+                                {
+                                if (!(s->options & SSL_OP_NO_TLSv1))
+                                        {
+                                        s->version=TLS1_VERSION;
+                                        type=3;
+                                        }
+                                else if (!(s->options & SSL_OP_NO_SSLv3))
+                                        {
+                                        s->version=SSL3_VERSION;
+                                        type=3;
+                                        }
+                                }
+                        else
+                                {
+                                /* client requests SSL 3.0 */
+                                if (!(s->options & SSL_OP_NO_SSLv3))
+                                        {
+                                        s->version=SSL3_VERSION;
+                                        type=3;
+                                        }
+                                else if (!(s->options & SSL_OP_NO_TLSv1))
+                                        {
+                                        /* we won't be able to use TLS of course,
+                                         * but this will send an appropriate alert */
+                                        s->version=TLS1_VERSION;
+                                        type=3;
+                                        }
+                                }
+                        }
+                else if ((strncmp("GET ", (char *)p,4) == 0) ||
+                         (strncmp("POST ",(char *)p,5) == 0) ||
+                         (strncmp("HEAD ",(char *)p,5) == 0) ||
+                         (strncmp("PUT ", (char *)p,4) == 0))
+                        {
+                        SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST);
+                        goto err;
+                        }
+                else if (strncmp("CONNECT",(char *)p,7) == 0)
+                        {
+                        SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST);
+                        goto err;
+                        }
+                }
+
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode() && (s->version < TLS1_VERSION))
+                {
+                SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
+                                        SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+                goto err;
+                }
+#endif
+
+        if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
+                {
+                /* we have SSLv3/TLSv1 in an SSLv2 header
+                 * (other cases skip this state) */
+
+                type=2;
+                p=s->packet;
+                v[0] = p[3]; /* == SSL3_VERSION_MAJOR */
+                v[1] = p[4];
+
+                n=((p[0]&0x7f)<<8)|p[1];
+                if (n > (1024*4))
+                        {
+                        SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE);
+                        goto err;
+                        }
+
+                j=ssl23_read_bytes(s,n+2);
+                if (j <= 0) return(j);
+
+                ssl3_finish_mac(s, s->packet+2, s->packet_length-2);
+                if (s->msg_callback)
+                        s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */
+
+                p=s->packet;
+                p+=5;
+                n2s(p,csl);
+                n2s(p,sil);
+                n2s(p,cl);
+                d=(unsigned char *)s->init_buf->data;
+                if ((csl+sil+cl+11) != s->packet_length)
+                        {
+                        SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH);
+                        goto err;
+                        }
+
+                /* record header: msg_type ... */
+                *(d++) = SSL3_MT_CLIENT_HELLO;
+                /* ... and length (actual value will be written later) */
+                d_len = d;
+                d += 3;
+
+                /* client_version */
+                *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */
+                *(d++) = v[1];
+
+                /* lets populate the random area */
+                /* get the challenge_length */
+                i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl;
+                memset(d,0,SSL3_RANDOM_SIZE);
+                memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i);
+                d+=SSL3_RANDOM_SIZE;
+
+                /* no session-id reuse */
+                *(d++)=0;
+
+                /* ciphers */
+                j=0;
+                dd=d;
+                d+=2;
+                for (i=0; i<csl; i+=3)
+                        {
+                        if (p[i] != 0) continue;
+                        *(d++)=p[i+1];
+                        *(d++)=p[i+2];
+                        j+=2;
+                        }
+                s2n(j,dd);
+
+                /* COMPRESSION */
+                *(d++)=1;
+                *(d++)=0;
+                
+                i = (d-(unsigned char *)s->init_buf->data) - 4;
+                l2n3((long)i, d_len);
+
+                /* get the data reused from the init_buf */
+                s->s3->tmp.reuse_message=1;
+                s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO;
+                s->s3->tmp.message_size=i;
+                }
+
+        /* imaginary new state (for program structure): */
+        /* s->state = SSL23_SR_CLNT_HELLO_C */
+
+        if (type == 1)
+                {
+#ifdef OPENSSL_NO_SSL2
+                SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
+                goto err;
+#else
+                /* we are talking sslv2 */
+                /* we need to clean up the SSLv3/TLSv1 setup and put in the
+                 * sslv2 stuff. */
+
+                if (s->s2 == NULL)
+                        {
+                        if (!ssl2_new(s))
+                                goto err;
+                        }
+                else
+                        ssl2_clear(s);
+
+                if (s->s3 != NULL) ssl3_free(s);
+
+                if (!BUF_MEM_grow_clean(s->init_buf,
+                        SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
+                        {
+                        goto err;
+                        }
+
+                s->state=SSL2_ST_GET_CLIENT_HELLO_A;
+                if (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3)
+                        s->s2->ssl2_rollback=0;
+                else
+                        /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0
+                         * (SSL 3.0 draft/RFC 2246, App. E.2) */
+                        s->s2->ssl2_rollback=1;
+
+                /* setup the n bytes we have read so we get them from
+                 * the sslv2 buffer */
+                s->rstate=SSL_ST_READ_HEADER;
+                s->packet_length=n;
+                s->packet= &(s->s2->rbuf[0]);
+                memcpy(s->packet,buf,n);
+                s->s2->rbuf_left=n;
+                s->s2->rbuf_offs=0;
+
+                s->method=SSLv2_server_method();
+                s->handshake_func=s->method->ssl_accept;
+#endif
+                }
+
+        if ((type == 2) || (type == 3))
+                {
+                /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
+
+                if (!ssl_init_wbio_buffer(s,1)) goto err;
+
+                /* we are in this state */
+                s->state=SSL3_ST_SR_CLNT_HELLO_A;
+
+                if (type == 3)
+                        {
+                        /* put the 'n' bytes we have read into the input buffer
+                         * for SSLv3 */
+                        s->rstate=SSL_ST_READ_HEADER;
+                        s->packet_length=n;
+                        s->packet= &(s->s3->rbuf.buf[0]);
+                        memcpy(s->packet,buf,n);
+                        s->s3->rbuf.left=n;
+                        s->s3->rbuf.offset=0;
+                        }
+                else
+                        {
+                        s->packet_length=0;
+                        s->s3->rbuf.left=0;
+                        s->s3->rbuf.offset=0;
+                        }
+
+                if (s->version == TLS1_VERSION)
+                        s->method = TLSv1_server_method();
+                else
+                        s->method = SSLv3_server_method();
+#if 0 /* ssl3_get_client_hello does this */
+                s->client_version=(v[0]<<8)|v[1];
+#endif
+                s->handshake_func=s->method->ssl_accept;
+                }
+        
+        if ((type < 1) || (type > 3))
+                {
+                /* bad, very bad */
+                SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL);
+                goto err;
+                }
+        s->init_num=0;
+
+        if (buf != buf_space) OPENSSL_free(buf);
+        s->first_packet=1;
+        return(SSL_accept(s));
+err:
+        if (buf != buf_space) OPENSSL_free(buf);
+        return(-1);
+        }