Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build

functionality for shared libs.

Note that routines such as sslv2_init and friends that use RSA will
not work due to lack of RSA in this library.

Needs documentation and help from ports for easy upgrade to full
functionality where legally possible.

1 files changed, 423 insertions, 0 deletions

diff --git a/src/lib/libcrypto/evp/bio_enc.c b/src/lib/libcrypto/evp/bio_enc.c
new file mode 100644
index 0000000000..6c30ddfc54
--- /dev/null
+++ b/src/lib/libcrypto/evp/bio_enc.c
@@ -0,0 +1,423 @@
+/* crypto/evp/bio_enc.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.]
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include "cryptlib.h"
+#include "buffer.h"
+#include "evp.h"
+
+#ifndef NOPROTO
+static int enc_write(BIO *h,char *buf,int num);
+static int enc_read(BIO *h,char *buf,int size);
+/*static int enc_puts(BIO *h,char *str); */
+/*static int enc_gets(BIO *h,char *str,int size); */
+static long enc_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int enc_new(BIO *h);
+static int enc_free(BIO *data);
+#else
+static int enc_write();
+static int enc_read();
+/*static int enc_puts(); */
+/*static int enc_gets(); */
+static long enc_ctrl();
+static int enc_new();
+static int enc_free();
+#endif
+
+#define ENC_BLOCK_SIZE  (1024*4)
+
+typedef struct enc_struct
+        {
+        int buf_len;
+        int buf_off;
+        int cont;               /* <= 0 when finished */
+        int finished;
+        int ok;                 /* bad decrypt */
+        EVP_CIPHER_CTX cipher;
+        char buf[ENC_BLOCK_SIZE+10];
+        } BIO_ENC_CTX;
+
+static BIO_METHOD methods_enc=
+        {
+        BIO_TYPE_CIPHER,"cipher",
+        enc_write,
+        enc_read,
+        NULL, /* enc_puts, */
+        NULL, /* enc_gets, */
+        enc_ctrl,
+        enc_new,
+        enc_free,
+        };
+
+BIO_METHOD *BIO_f_cipher()
+        {
+        return(&methods_enc);
+        }
+
+static int enc_new(bi)
+BIO *bi;
+        {
+        BIO_ENC_CTX *ctx;
+
+        ctx=(BIO_ENC_CTX *)Malloc(sizeof(BIO_ENC_CTX));
+        EVP_CIPHER_CTX_init(&ctx->cipher);
+        if (ctx == NULL) return(0);
+
+        ctx->buf_len=0;
+        ctx->buf_off=0;
+        ctx->cont=1;
+        ctx->finished=0;
+        ctx->ok=1;
+
+        bi->init=0;
+        bi->ptr=(char *)ctx;
+        bi->flags=0;
+        return(1);
+        }
+
+static int enc_free(a)
+BIO *a;
+        {
+        BIO_ENC_CTX *b;
+
+        if (a == NULL) return(0);
+        b=(BIO_ENC_CTX *)a->ptr;
+        EVP_CIPHER_CTX_cleanup(&(b->cipher));
+        memset(a->ptr,0,sizeof(BIO_ENC_CTX));
+        Free(a->ptr);
+        a->ptr=NULL;
+        a->init=0;
+        a->flags=0;
+        return(1);
+        }
+        
+static int enc_read(b,out,outl)
+BIO *b;
+char *out;
+int outl;
+        {
+        int ret=0,i;
+        BIO_ENC_CTX *ctx;
+
+        if (out == NULL) return(0);
+        ctx=(BIO_ENC_CTX *)b->ptr;
+
+        if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
+
+        /* First check if there are bytes decoded/encoded */
+        if (ctx->buf_len > 0)
+                {
+                i=ctx->buf_len-ctx->buf_off;
+                if (i > outl) i=outl;
+                memcpy(out,&(ctx->buf[ctx->buf_off]),i);
+                ret=i;
+                out+=i;
+                outl-=i;
+                ctx->buf_off+=i;
+                if (ctx->buf_len == ctx->buf_off)
+                        {
+                        ctx->buf_len=0;
+                        ctx->buf_off=0;
+                        }
+                }
+
+        /* At this point, we have room of outl bytes and an empty
+         * buffer, so we should read in some more. */
+
+        while (outl > 0)
+                {
+                if (ctx->cont <= 0) break;
+
+                /* read in at offset 8, read the EVP_Cipher
+                 * documentation about why */
+                i=BIO_read(b->next_bio,&(ctx->buf[8]),ENC_BLOCK_SIZE);
+
+                if (i <= 0)
+                        {
+                        /* Should be continue next time we are called? */
+                        if (!BIO_should_retry(b->next_bio))
+                                {
+                                ctx->cont=i;
+                                i=EVP_CipherFinal(&(ctx->cipher),
+                                        (unsigned char *)ctx->buf,
+                                        &(ctx->buf_len));
+                                ctx->ok=i;
+                                ctx->buf_off=0;
+                                }
+                        else
+                                ret=(ret == 0)?i:ret;
+                        break;
+                        }
+                else
+                        {
+                        EVP_CipherUpdate(&(ctx->cipher),
+                                (unsigned char *)ctx->buf,&ctx->buf_len,
+                                (unsigned char *)&(ctx->buf[8]),i);
+                        ctx->cont=1;
+                        }
+
+                if (ctx->buf_len <= outl)
+                        i=ctx->buf_len;
+                else
+                        i=outl;
+
+                if (i <= 0) break;
+                memcpy(out,ctx->buf,i);
+                ret+=i;
+                ctx->buf_off=i;
+                outl-=i;
+                out+=i;
+                }
+
+        BIO_clear_retry_flags(b);
+        BIO_copy_next_retry(b);
+        return((ret == 0)?ctx->cont:ret);
+        }
+
+static int enc_write(b,in,inl)
+BIO *b;
+char *in;
+int inl;
+        {
+        int ret=0,n,i;
+        BIO_ENC_CTX *ctx;
+
+        ctx=(BIO_ENC_CTX *)b->ptr;
+        ret=inl;
+
+        BIO_clear_retry_flags(b);
+        n=ctx->buf_len-ctx->buf_off;
+        while (n > 0)
+                {
+                i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);
+                if (i <= 0)
+                        {
+                        BIO_copy_next_retry(b);
+                        return(i);
+                        }
+                ctx->buf_off+=i;
+                n-=i;
+                }
+        /* at this point all pending data has been written */
+
+        if ((in == NULL) || (inl <= 0)) return(0);
+
+        ctx->buf_off=0;
+        while (inl > 0)
+                {
+                n=(inl > ENC_BLOCK_SIZE)?ENC_BLOCK_SIZE:inl;
+                EVP_CipherUpdate(&(ctx->cipher),
+                        (unsigned char *)ctx->buf,&ctx->buf_len,
+                        (unsigned char *)in,n);
+                inl-=n;
+                in+=n;
+
+                ctx->buf_off=0;
+                n=ctx->buf_len;
+                while (n > 0)
+                        {
+                        i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);
+                        if (i <= 0)
+                                {
+                                BIO_copy_next_retry(b);
+                                return(i);
+                                }
+                        n-=i;
+                        ctx->buf_off+=i;
+                        }
+                ctx->buf_len=0;
+                ctx->buf_off=0;
+                }
+        BIO_copy_next_retry(b);
+        return(ret);
+        }
+
+static long enc_ctrl(b,cmd,num,ptr)
+BIO *b;
+int cmd;
+long num;
+char *ptr;
+        {
+        BIO *dbio;
+        BIO_ENC_CTX *ctx,*dctx;
+        long ret=1;
+        int i;
+
+        ctx=(BIO_ENC_CTX *)b->ptr;
+
+        switch (cmd)
+                {
+        case BIO_CTRL_RESET:
+                ctx->ok=1;
+                ctx->finished=0;
+                EVP_CipherInit(&(ctx->cipher),NULL,NULL,NULL,
+                        ctx->cipher.encrypt);
+                ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+        case BIO_CTRL_EOF:      /* More to read */
+                if (ctx->cont <= 0)
+                        ret=1;
+                else
+                        ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+        case BIO_CTRL_WPENDING:
+                ret=ctx->buf_len-ctx->buf_off;
+                if (ret <= 0)
+                        ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+        case BIO_CTRL_PENDING: /* More to read in buffer */
+                ret=ctx->buf_len-ctx->buf_off;
+                if (ret <= 0)
+                        ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+        case BIO_CTRL_FLUSH:
+                /* do a final write */
+again:
+                while (ctx->buf_len != ctx->buf_off)
+                        {
+                        i=enc_write(b,NULL,0);
+                        if (i < 0)
+                                {
+                                ret=i;
+                                break;
+                                }
+                        }
+
+                if (!ctx->finished)
+                        {
+                        ctx->finished=1;
+                        ctx->buf_off=0;
+                        ret=EVP_CipherFinal(&(ctx->cipher),
+                                (unsigned char *)ctx->buf,
+                                &(ctx->buf_len));
+                        ctx->ok=(int)ret;
+                        if (ret <= 0) break;
+
+                        /* push out the bytes */
+                        goto again;
+                        }
+                
+                /* Finally flush the underlying BIO */
+                ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+        case BIO_C_GET_CIPHER_STATUS:
+                ret=(long)ctx->ok;
+                break;
+        case BIO_C_DO_STATE_MACHINE:
+                BIO_clear_retry_flags(b);
+                ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                BIO_copy_next_retry(b);
+                break;
+
+        case BIO_CTRL_DUP:
+                dbio=(BIO *)ptr;
+                dctx=(BIO_ENC_CTX *)dbio->ptr;
+                memcpy(&(dctx->cipher),&(ctx->cipher),sizeof(ctx->cipher));
+                dbio->init=1;
+                break;
+        default:
+                ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+                break;
+                }
+        return(ret);
+        }
+
+/*
+void BIO_set_cipher_ctx(b,c)
+BIO *b;
+EVP_CIPHER_ctx *c;
+        {
+        if (b == NULL) return;
+
+        if ((b->callback != NULL) &&
+                (b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0))
+                return;
+
+        b->init=1;
+        ctx=(BIO_ENC_CTX *)b->ptr;
+        memcpy(ctx->cipher,c,sizeof(EVP_CIPHER_CTX));
+        
+        if (b->callback != NULL)
+                b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L);
+        }
+*/
+
+void BIO_set_cipher(b,c,k,i,e)
+BIO *b;
+EVP_CIPHER *c;
+unsigned char *k;
+unsigned char *i;
+int e;
+        {
+        BIO_ENC_CTX *ctx;
+
+        if (b == NULL) return;
+
+        if ((b->callback != NULL) &&
+                (b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0))
+                return;
+
+        b->init=1;
+        ctx=(BIO_ENC_CTX *)b->ptr;
+        EVP_CipherInit(&(ctx->cipher),c,k,i,e);
+        
+        if (b->callback != NULL)
+                b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L);
+        }
+