diff options
Diffstat (limited to 'deps/openssl/openssl/ssl/s23_srvr.c')
| -rw-r--r-- | deps/openssl/openssl/ssl/s23_srvr.c | 655 |
1 files changed, 0 insertions, 655 deletions
diff --git a/deps/openssl/openssl/ssl/s23_srvr.c b/deps/openssl/openssl/ssl/s23_srvr.c deleted file mode 100644 index d2017e7cf0..0000000000 --- a/deps/openssl/openssl/ssl/s23_srvr.c +++ /dev/null @@ -1,655 +0,0 @@ -/* 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) 1998-2006 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). - * - */ - -#include <stdio.h> -#include "ssl_locl.h" -#include <openssl/buffer.h> -#include <openssl/rand.h> -#include <openssl/objects.h> -#include <openssl/evp.h> -#ifdef OPENSSL_FIPS -# include <openssl/fips.h> -#endif - -static const SSL_METHOD *ssl23_get_server_method(int ver); -int ssl23_get_client_hello(SSL *s); -static const SSL_METHOD *ssl23_get_server_method(int ver) -{ -#ifndef OPENSSL_NO_SSL2 - if (ver == SSL2_VERSION) - return (SSLv2_server_method()); -#endif -#ifndef OPENSSL_NO_SSL3 - if (ver == SSL3_VERSION) - return (SSLv3_server_method()); -#endif - if (ver == TLS1_VERSION) - return (TLSv1_server_method()); - else if (ver == TLS1_1_VERSION) - return (TLSv1_1_server_method()); - else if (ver == TLS1_2_VERSION) - return (TLSv1_2_server_method()); - else - return (NULL); -} - -IMPLEMENT_ssl23_meth_func(SSLv23_server_method, - ssl23_accept, - ssl_undefined_function, ssl23_get_server_method) - -int ssl23_accept(SSL *s) -{ - BUF_MEM *buf; - unsigned long Time = (unsigned long)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)) { - BUF_MEM_free(buf); - ret = -1; - goto end; - } - s->init_buf = buf; - } - - if (!ssl3_init_finished_mac(s)) { - ret = -1; - goto end; - } - - 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) -{ - /*- - * 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_space[11]; - 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]; - - 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 (p[4] >= TLS1_2_VERSION_MINOR && - !(s->options & SSL_OP_NO_TLSv1_2)) { - s->version = TLS1_2_VERSION; - s->state = SSL23_ST_SR_CLNT_HELLO_B; - } else if (p[4] >= TLS1_1_VERSION_MINOR && - !(s->options & SSL_OP_NO_TLSv1_1)) { - s->version = TLS1_1_VERSION; - /* - * type=2; - *//* - * done later to survive restarts - */ - s->state = SSL23_ST_SR_CLNT_HELLO_B; - } else 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; - - } - } - /* p[4] < 5 ... silly record length? */ - else if ((p[0] == SSL3_RT_HANDSHAKE) && - (p[1] == SSL3_VERSION_MAJOR) && - (p[5] == SSL3_MT_CLIENT_HELLO) && ((p[3] == 0 && p[4] < 5) - || (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 reject such connections to avoid protocol version - * downgrade attacks. - */ - if (p[3] == 0 && p[4] < 6) { - SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_RECORD_TOO_SMALL); - goto err; - } - /* - * if major version number > 3 set minor to a value which will - * use the highest version 3 we support. If TLS 2.0 ever appears - * we will need to revise this.... - */ - if (p[9] > SSL3_VERSION_MAJOR) - v[1] = 0xff; - else - v[1] = p[10]; /* minor version according to client_version */ - if (v[1] >= TLS1_VERSION_MINOR) { - if (v[1] >= TLS1_2_VERSION_MINOR && - !(s->options & SSL_OP_NO_TLSv1_2)) { - s->version = TLS1_2_VERSION; - type = 3; - } else if (v[1] >= TLS1_1_VERSION_MINOR && - !(s->options & SSL_OP_NO_TLSv1_1)) { - s->version = TLS1_1_VERSION; - type = 3; - } else 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; - } - } - - /* ensure that TLS_MAX_VERSION is up-to-date */ - OPENSSL_assert(s->version <= TLS_MAX_VERSION); - - if (s->version < TLS1_2_VERSION && tls1_suiteb(s)) { - SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, - SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE); - 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]; - - /*- - * An SSLv3/TLSv1 backwards-compatible CLIENT-HELLO in an SSLv2 - * header is sent directly on the wire, not wrapped as a TLS - * record. It's format is: - * Byte Content - * 0-1 msg_length - * 2 msg_type - * 3-4 version - * 5-6 cipher_spec_length - * 7-8 session_id_length - * 9-10 challenge_length - * ... ... - */ - 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; - } - if (n < 9) { - SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, - SSL_R_RECORD_LENGTH_MISMATCH); - goto err; - } - - j = ssl23_read_bytes(s, n + 2); - /* - * We previously read 11 bytes, so if j > 0, we must have j == n+2 == - * s->packet_length. We have at least 11 valid packet bytes. - */ - if (j <= 0) - return (j); - - ssl3_finish_mac(s, s->packet + 2, s->packet_length - 2); - - /* CLIENT-HELLO */ - if (s->msg_callback) - s->msg_callback(0, SSL2_VERSION, 0, s->packet + 2, - s->packet_length - 2, s, s->msg_callback_arg); - - 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) { /* We can't have TLS - * extensions in SSL - * 2.0 format * - * Client Hello, can - * we? Error - * condition should - * be * '>' - * otherweise */ - 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; - -#if 0 - /* copy any remaining data with may be extensions */ - p = p + csl + sil + cl; - while (p < s->packet + s->packet_length) { - *(d++) = *(p++); - } -#endif - - 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) - */ - const SSL_METHOD *new_method; - new_method = ssl23_get_server_method(s->version); - if (new_method == NULL) { - SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_UNSUPPORTED_PROTOCOL); - goto err; - } - s->method = new_method; - - 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; - if (s->s3->rbuf.buf == NULL) - if (!ssl3_setup_read_buffer(s)) - goto err; - - 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 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); - return (SSL_accept(s)); - err: - if (buf != buf_space) - OPENSSL_free(buf); - return (-1); -} |