openssl: Move to a module and split thirdparty lib

Same rationale as the previous commits.

1 files changed, 0 insertions, 725 deletions

diff --git a/drivers/builtin_openssl2/ssl/s2_pkt.c b/drivers/builtin_openssl2/ssl/s2_pkt.c
deleted file mode 100644
index 7a61888134..0000000000
--- a/drivers/builtin_openssl2/ssl/s2_pkt.c
+++ /dev/null
@@ -1,725 +0,0 @@
-/* ssl/s2_pkt.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 "ssl_locl.h"
-#ifndef OPENSSL_NO_SSL2
-# include <stdio.h>
-# include <errno.h>
-# define USE_SOCKETS
-
-static int read_n(SSL *s, unsigned int n, unsigned int max,
-                  unsigned int extend);
-static int n_do_ssl_write(SSL *s, const unsigned char *buf, unsigned int len);
-static int write_pending(SSL *s, const unsigned char *buf, unsigned int len);
-static int ssl_mt_error(int n);
-
-/*
- * SSL 2.0 imlementation for SSL_read/SSL_peek - This routine will return 0
- * to len bytes, decrypted etc if required.
- */
-static int ssl2_read_internal(SSL *s, void *buf, int len, int peek)
-{
-    int n;
-    unsigned char mac[MAX_MAC_SIZE];
-    unsigned char *p;
-    int i;
-    int mac_size;
-
- ssl2_read_again:
-    if (SSL_in_init(s) && !s->in_handshake) {
-        n = s->handshake_func(s);
-        if (n < 0)
-            return (n);
-        if (n == 0) {
-            SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_SSL_HANDSHAKE_FAILURE);
-            return (-1);
-        }
-    }
-
-    clear_sys_error();
-    s->rwstate = SSL_NOTHING;
-    if (len <= 0)
-        return (len);
-
-    if (s->s2->ract_data_length != 0) { /* read from buffer */
-        if (len > s->s2->ract_data_length)
-            n = s->s2->ract_data_length;
-        else
-            n = len;
-
-        memcpy(buf, s->s2->ract_data, (unsigned int)n);
-        if (!peek) {
-            s->s2->ract_data_length -= n;
-            s->s2->ract_data += n;
-            if (s->s2->ract_data_length == 0)
-                s->rstate = SSL_ST_READ_HEADER;
-        }
-
-        return (n);
-    }
-
-    /*
-     * s->s2->ract_data_length == 0 Fill the buffer, then goto
-     * ssl2_read_again.
-     */
-
-    if (s->rstate == SSL_ST_READ_HEADER) {
-        if (s->first_packet) {
-            n = read_n(s, 5, SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2, 0);
-            if (n <= 0)
-                return (n);     /* error or non-blocking */
-            s->first_packet = 0;
-            p = s->packet;
-            if (!((p[0] & 0x80) && ((p[2] == SSL2_MT_CLIENT_HELLO) ||
-                                    (p[2] == SSL2_MT_SERVER_HELLO)))) {
-                SSLerr(SSL_F_SSL2_READ_INTERNAL,
-                       SSL_R_NON_SSLV2_INITIAL_PACKET);
-                return (-1);
-            }
-        } else {
-            n = read_n(s, 2, SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2, 0);
-            if (n <= 0)
-                return (n);     /* error or non-blocking */
-        }
-        /* part read stuff */
-
-        s->rstate = SSL_ST_READ_BODY;
-        p = s->packet;
-        /* Do header */
-        /*
-         * s->s2->padding=0;
-         */
-        s->s2->escape = 0;
-        s->s2->rlength = (((unsigned int)p[0]) << 8) | ((unsigned int)p[1]);
-        if ((p[0] & TWO_BYTE_BIT)) { /* Two byte header? */
-            s->s2->three_byte_header = 0;
-            s->s2->rlength &= TWO_BYTE_MASK;
-        } else {
-            s->s2->three_byte_header = 1;
-            s->s2->rlength &= THREE_BYTE_MASK;
-
-            /* security >s2->escape */
-            s->s2->escape = ((p[0] & SEC_ESC_BIT)) ? 1 : 0;
-        }
-    }
-
-    if (s->rstate == SSL_ST_READ_BODY) {
-        n = s->s2->rlength + 2 + s->s2->three_byte_header;
-        if (n > (int)s->packet_length) {
-            n -= s->packet_length;
-            i = read_n(s, (unsigned int)n, (unsigned int)n, 1);
-            if (i <= 0)
-                return (i);     /* ERROR */
-        }
-
-        p = &(s->packet[2]);
-        s->rstate = SSL_ST_READ_HEADER;
-        if (s->s2->three_byte_header)
-            s->s2->padding = *(p++);
-        else
-            s->s2->padding = 0;
-
-        /* Data portion */
-        if (s->s2->clear_text) {
-            mac_size = 0;
-            s->s2->mac_data = p;
-            s->s2->ract_data = p;
-            if (s->s2->padding) {
-                SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_ILLEGAL_PADDING);
-                return (-1);
-            }
-        } else {
-            mac_size = EVP_MD_CTX_size(s->read_hash);
-            if (mac_size < 0)
-                return -1;
-            OPENSSL_assert(mac_size <= MAX_MAC_SIZE);
-            s->s2->mac_data = p;
-            s->s2->ract_data = &p[mac_size];
-            if (s->s2->padding + mac_size > s->s2->rlength) {
-                SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_ILLEGAL_PADDING);
-                return (-1);
-            }
-        }
-
-        s->s2->ract_data_length = s->s2->rlength;
-        /*
-         * added a check for length > max_size in case encryption was not
-         * turned on yet due to an error
-         */
-        if ((!s->s2->clear_text) &&
-            (s->s2->rlength >= (unsigned int)mac_size)) {
-            if (!ssl2_enc(s, 0)) {
-                SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_DECRYPTION_FAILED);
-                return (-1);
-            }
-            s->s2->ract_data_length -= mac_size;
-            ssl2_mac(s, mac, 0);
-            s->s2->ract_data_length -= s->s2->padding;
-            if ((CRYPTO_memcmp(mac, s->s2->mac_data, mac_size) != 0) ||
-                (s->s2->rlength %
-                 EVP_CIPHER_CTX_block_size(s->enc_read_ctx) != 0)) {
-                SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_BAD_MAC_DECODE);
-                return (-1);
-            }
-        }
-        INC32(s->s2->read_sequence); /* expect next number */
-        /* s->s2->ract_data is now available for processing */
-
-        /*
-         * Possibly the packet that we just read had 0 actual data bytes.
-         * (SSLeay/OpenSSL itself never sends such packets; see ssl2_write.)
-         * In this case, returning 0 would be interpreted by the caller as
-         * indicating EOF, so it's not a good idea.  Instead, we just
-         * continue reading; thus ssl2_read_internal may have to process
-         * multiple packets before it can return. [Note that using select()
-         * for blocking sockets *never* guarantees that the next SSL_read
-         * will not block -- the available data may contain incomplete
-         * packets, and except for SSL 2, renegotiation can confuse things
-         * even more.]
-         */
-
-        goto ssl2_read_again;   /* This should really be "return
-                                 * ssl2_read(s,buf,len)", but that would
-                                 * allow for denial-of-service attacks if a C
-                                 * compiler is used that does not recognize
-                                 * end-recursion. */
-    } else {
-        SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_BAD_STATE);
-        return (-1);
-    }
-}
-
-int ssl2_read(SSL *s, void *buf, int len)
-{
-    return ssl2_read_internal(s, buf, len, 0);
-}
-
-int ssl2_peek(SSL *s, void *buf, int len)
-{
-    return ssl2_read_internal(s, buf, len, 1);
-}
-
-static int read_n(SSL *s, unsigned int n, unsigned int max,
-                  unsigned int extend)
-{
-    int i, off, newb;
-
-    /*
-     * if there is stuff still in the buffer from a previous read, and there
-     * is more than we want, take some.
-     */
-    if (s->s2->rbuf_left >= (int)n) {
-        if (extend)
-            s->packet_length += n;
-        else {
-            s->packet = &(s->s2->rbuf[s->s2->rbuf_offs]);
-            s->packet_length = n;
-        }
-        s->s2->rbuf_left -= n;
-        s->s2->rbuf_offs += n;
-        return (n);
-    }
-
-    if (!s->read_ahead)
-        max = n;
-    if (max > (unsigned int)(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2))
-        max = SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2;
-
-    /*
-     * Else we want more than we have. First, if there is some left or we
-     * want to extend
-     */
-    off = 0;
-    if ((s->s2->rbuf_left != 0) || ((s->packet_length != 0) && extend)) {
-        newb = s->s2->rbuf_left;
-        if (extend) {
-            off = s->packet_length;
-            if (s->packet != s->s2->rbuf)
-                memcpy(s->s2->rbuf, s->packet, (unsigned int)newb + off);
-        } else if (s->s2->rbuf_offs != 0) {
-            memcpy(s->s2->rbuf, &(s->s2->rbuf[s->s2->rbuf_offs]),
-                   (unsigned int)newb);
-            s->s2->rbuf_offs = 0;
-        }
-        s->s2->rbuf_left = 0;
-    } else
-        newb = 0;
-
-    /*
-     * off is the offset to start writing too. r->s2->rbuf_offs is the
-     * 'unread data', now 0. newb is the number of new bytes so far
-     */
-    s->packet = s->s2->rbuf;
-    while (newb < (int)n) {
-        clear_sys_error();
-        if (s->rbio != NULL) {
-            s->rwstate = SSL_READING;
-            i = BIO_read(s->rbio, (char *)&(s->s2->rbuf[off + newb]),
-                         max - newb);
-        } else {
-            SSLerr(SSL_F_READ_N, SSL_R_READ_BIO_NOT_SET);
-            i = -1;
-        }
-# ifdef PKT_DEBUG
-        if (s->debug & 0x01)
-            sleep(1);
-# endif
-        if (i <= 0) {
-            s->s2->rbuf_left += newb;
-            return (i);
-        }
-        newb += i;
-    }
-
-    /* record unread data */
-    if (newb > (int)n) {
-        s->s2->rbuf_offs = n + off;
-        s->s2->rbuf_left = newb - n;
-    } else {
-        s->s2->rbuf_offs = 0;
-        s->s2->rbuf_left = 0;
-    }
-    if (extend)
-        s->packet_length += n;
-    else
-        s->packet_length = n;
-    s->rwstate = SSL_NOTHING;
-    return (n);
-}
-
-int ssl2_write(SSL *s, const void *_buf, int len)
-{
-    const unsigned char *buf = _buf;
-    unsigned int n, tot;
-    int i;
-
-    if (SSL_in_init(s) && !s->in_handshake) {
-        i = s->handshake_func(s);
-        if (i < 0)
-            return (i);
-        if (i == 0) {
-            SSLerr(SSL_F_SSL2_WRITE, SSL_R_SSL_HANDSHAKE_FAILURE);
-            return (-1);
-        }
-    }
-
-    if (s->error) {
-        ssl2_write_error(s);
-        if (s->error)
-            return (-1);
-    }
-
-    clear_sys_error();
-    s->rwstate = SSL_NOTHING;
-    if (len <= 0)
-        return (len);
-
-    tot = s->s2->wnum;
-    s->s2->wnum = 0;
-
-    n = (len - tot);
-    for (;;) {
-        i = n_do_ssl_write(s, &(buf[tot]), n);
-        if (i <= 0) {
-            s->s2->wnum = tot;
-            return (i);
-        }
-        if ((i == (int)n) || (s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE)) {
-            return (tot + i);
-        }
-
-        n -= i;
-        tot += i;
-    }
-}
-
-static int write_pending(SSL *s, const unsigned char *buf, unsigned int len)
-{
-    int i;
-
-    /* s->s2->wpend_len != 0 MUST be true. */
-
-    /*
-     * check that they have given us the same buffer to write
-     */
-    if ((s->s2->wpend_tot > (int)len) ||
-        ((s->s2->wpend_buf != buf) &&
-         !(s->mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER))) {
-        SSLerr(SSL_F_WRITE_PENDING, SSL_R_BAD_WRITE_RETRY);
-        return (-1);
-    }
-
-    for (;;) {
-        clear_sys_error();
-        if (s->wbio != NULL) {
-            s->rwstate = SSL_WRITING;
-            i = BIO_write(s->wbio,
-                          (char *)&(s->s2->write_ptr[s->s2->wpend_off]),
-                          (unsigned int)s->s2->wpend_len);
-        } else {
-            SSLerr(SSL_F_WRITE_PENDING, SSL_R_WRITE_BIO_NOT_SET);
-            i = -1;
-        }
-# ifdef PKT_DEBUG
-        if (s->debug & 0x01)
-            sleep(1);
-# endif
-        if (i == s->s2->wpend_len) {
-            s->s2->wpend_len = 0;
-            s->rwstate = SSL_NOTHING;
-            return (s->s2->wpend_ret);
-        } else if (i <= 0)
-            return (i);
-        s->s2->wpend_off += i;
-        s->s2->wpend_len -= i;
-    }
-}
-
-static int n_do_ssl_write(SSL *s, const unsigned char *buf, unsigned int len)
-{
-    unsigned int j, k, olen, p, bs;
-    int mac_size;
-    register unsigned char *pp;
-
-    olen = len;
-
-    /*
-     * first check if there is data from an encryption waiting to be sent -
-     * it must be sent because the other end is waiting. This will happen
-     * with non-blocking IO.  We print it and then return.
-     */
-    if (s->s2->wpend_len != 0)
-        return (write_pending(s, buf, len));
-
-    /* set mac_size to mac size */
-    if (s->s2->clear_text)
-        mac_size = 0;
-    else {
-        mac_size = EVP_MD_CTX_size(s->write_hash);
-        if (mac_size < 0)
-            return -1;
-    }
-
-    /* lets set the pad p */
-    if (s->s2->clear_text) {
-        if (len > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER)
-            len = SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER;
-        p = 0;
-        s->s2->three_byte_header = 0;
-        /* len=len; */
-    } else {
-        bs = EVP_CIPHER_CTX_block_size(s->enc_read_ctx);
-        j = len + mac_size;
-        /*
-         * Two-byte headers allow for a larger record length than three-byte
-         * headers, but we can't use them if we need padding or if we have to
-         * set the escape bit.
-         */
-        if ((j > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) && (!s->s2->escape)) {
-            if (j > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER)
-                j = SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER;
-            /*
-             * set k to the max number of bytes with 2 byte header
-             */
-            k = j - (j % bs);
-            /* how many data bytes? */
-            len = k - mac_size;
-            s->s2->three_byte_header = 0;
-            p = 0;
-        } else if ((bs <= 1) && (!s->s2->escape)) {
-            /*-
-             * j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER, thus
-             * j < SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER
-             */
-            s->s2->three_byte_header = 0;
-            p = 0;
-        } else {                /* we may have to use a 3 byte header */
-
-            /*-
-             * If s->s2->escape is not set, then
-             * j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER, and thus
-             * j < SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER.
-             */
-            p = (j % bs);
-            p = (p == 0) ? 0 : (bs - p);
-            if (s->s2->escape) {
-                s->s2->three_byte_header = 1;
-                if (j > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
-                    j = SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER;
-            } else
-                s->s2->three_byte_header = (p == 0) ? 0 : 1;
-        }
-    }
-
-    /*-
-     * Now
-     *      j <= SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER
-     * holds, and if s->s2->three_byte_header is set, then even
-     *      j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER.
-     */
-
-    /*
-     * mac_size is the number of MAC bytes len is the number of data bytes we
-     * are going to send p is the number of padding bytes (if it is a
-     * two-byte header, then p == 0)
-     */
-
-    s->s2->wlength = len;
-    s->s2->padding = p;
-    s->s2->mac_data = &(s->s2->wbuf[3]);
-    s->s2->wact_data = &(s->s2->wbuf[3 + mac_size]);
-
-    /*
-     * It would be clearer to write this as follows:
-     *     if (mac_size + len + p > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER)
-     * However |len| is user input that could in theory be very large. We
-     * know |mac_size| and |p| are small, so to avoid any possibility of
-     * overflow we write it like this.
-     *
-     * In theory this should never fail because the logic above should have
-     * modified |len| if it is too big. But we are being cautious.
-     */
-    if (len > (SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER - (mac_size + p))) {
-        return -1;
-    }
-    /* we copy the data into s->s2->wbuf */
-    memcpy(s->s2->wact_data, buf, len);
-    if (p)
-        memset(&(s->s2->wact_data[len]), 0, p); /* arbitrary padding */
-
-    if (!s->s2->clear_text) {
-        s->s2->wact_data_length = len + p;
-        ssl2_mac(s, s->s2->mac_data, 1);
-        s->s2->wlength += p + mac_size;
-        if (ssl2_enc(s, 1) < 1)
-            return -1;
-    }
-
-    /* package up the header */
-    s->s2->wpend_len = s->s2->wlength;
-    if (s->s2->three_byte_header) { /* 3 byte header */
-        pp = s->s2->mac_data;
-        pp -= 3;
-        pp[0] = (s->s2->wlength >> 8) & (THREE_BYTE_MASK >> 8);
-        if (s->s2->escape)
-            pp[0] |= SEC_ESC_BIT;
-        pp[1] = s->s2->wlength & 0xff;
-        pp[2] = s->s2->padding;
-        s->s2->wpend_len += 3;
-    } else {
-        pp = s->s2->mac_data;
-        pp -= 2;
-        pp[0] = ((s->s2->wlength >> 8) & (TWO_BYTE_MASK >> 8)) | TWO_BYTE_BIT;
-        pp[1] = s->s2->wlength & 0xff;
-        s->s2->wpend_len += 2;
-    }
-    s->s2->write_ptr = pp;
-
-    INC32(s->s2->write_sequence); /* expect next number */
-
-    /* lets try to actually write the data */
-    s->s2->wpend_tot = olen;
-    s->s2->wpend_buf = buf;
-
-    s->s2->wpend_ret = len;
-
-    s->s2->wpend_off = 0;
-    return (write_pending(s, buf, olen));
-}
-
-int ssl2_part_read(SSL *s, unsigned long f, int i)
-{
-    unsigned char *p;
-    int j;
-
-    if (i < 0) {
-        /* ssl2_return_error(s); */
-        /*
-         * for non-blocking io, this is not necessarily fatal
-         */
-        return (i);
-    } else {
-        s->init_num += i;
-
-        /*
-         * Check for error.  While there are recoverable errors, this
-         * function is not called when those must be expected; any error
-         * detected here is fatal.
-         */
-        if (s->init_num >= 3) {
-            p = (unsigned char *)s->init_buf->data;
-            if (p[0] == SSL2_MT_ERROR) {
-                j = (p[1] << 8) | p[2];
-                SSLerr((int)f, ssl_mt_error(j));
-                s->init_num -= 3;
-                if (s->init_num > 0)
-                    memmove(p, p + 3, s->init_num);
-            }
-        }
-
-        /*
-         * If it's not an error message, we have some error anyway -- the
-         * message was shorter than expected.  This too is treated as fatal
-         * (at least if SSL_get_error is asked for its opinion).
-         */
-        return (0);
-    }
-}
-
-int ssl2_do_write(SSL *s)
-{
-    int ret;
-
-    ret = ssl2_write(s, &s->init_buf->data[s->init_off], s->init_num);
-    if (ret == s->init_num) {
-        if (s->msg_callback)
-            s->msg_callback(1, s->version, 0, s->init_buf->data,
-                            (size_t)(s->init_off + s->init_num), s,
-                            s->msg_callback_arg);
-        return (1);
-    }
-    if (ret < 0)
-        return (-1);
-    s->init_off += ret;
-    s->init_num -= ret;
-    return (0);
-}
-
-static int ssl_mt_error(int n)
-{
-    int ret;
-
-    switch (n) {
-    case SSL2_PE_NO_CIPHER:
-        ret = SSL_R_PEER_ERROR_NO_CIPHER;
-        break;
-    case SSL2_PE_NO_CERTIFICATE:
-        ret = SSL_R_PEER_ERROR_NO_CERTIFICATE;
-        break;
-    case SSL2_PE_BAD_CERTIFICATE:
-        ret = SSL_R_PEER_ERROR_CERTIFICATE;
-        break;
-    case SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE:
-        ret = SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE;
-        break;
-    default:
-        ret = SSL_R_UNKNOWN_REMOTE_ERROR_TYPE;
-        break;
-    }
-    return (ret);
-}
-#else                           /* !OPENSSL_NO_SSL2 */
-
-# if PEDANTIC
-static void *dummy = &dummy;
-# endif
-
-#endif