1 files changed, 466 insertions, 0 deletions

diff --git a/src/lib/libcrypto/pkcs7/bio_ber.c b/src/lib/libcrypto/pkcs7/bio_ber.c
new file mode 100644
index 0000000000..31973fcd1f
--- /dev/null
+++ b/src/lib/libcrypto/pkcs7/bio_ber.c
@@ -0,0 +1,466 @@
+/* crypto/evp/bio_ber.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 <openssl/buffer.h>
+#include <openssl/evp.h>
+
+static int ber_write(BIO *h,char *buf,int num);
+static int ber_read(BIO *h,char *buf,int size);
+/*static int ber_puts(BIO *h,char *str); */
+/*static int ber_gets(BIO *h,char *str,int size); */
+static long ber_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int ber_new(BIO *h);
+static int ber_free(BIO *data);
+static long ber_callback_ctrl(BIO *h,int cmd,void *(*fp)());
+#define BER_BUF_SIZE    (32)
+
+/* This is used to hold the state of the BER objects being read. */
+typedef struct ber_struct
+        {
+        int tag;
+        int class;
+        long length;
+        int inf;
+        int num_left;
+        int depth;
+        } BER_CTX;
+
+typedef struct bio_ber_struct
+        {
+        int tag;
+        int class;
+        long length;
+        int inf;
+
+        /* most of the following are used when doing non-blocking IO */
+        /* reading */
+        long num_left;  /* number of bytes still to read/write in block */
+        int depth;      /* used with indefinite encoding. */
+        int finished;   /* No more read data */
+
+        /* writting */ 
+        char *w_addr;
+        int w_offset;
+        int w_left;
+
+        int buf_len;
+        int buf_off;
+        unsigned char buf[BER_BUF_SIZE];
+        } BIO_BER_CTX;
+
+static BIO_METHOD methods_ber=
+        {
+        BIO_TYPE_CIPHER,"cipher",
+        ber_write,
+        ber_read,
+        NULL, /* ber_puts, */
+        NULL, /* ber_gets, */
+        ber_ctrl,
+        ber_new,
+        ber_free,
+        ber_callback_ctrl,
+        };
+
+BIO_METHOD *BIO_f_ber(void)
+        {
+        return(&methods_ber);
+        }
+
+static int ber_new(BIO *bi)
+        {
+        BIO_BER_CTX *ctx;
+
+        ctx=(BIO_BER_CTX *)OPENSSL_malloc(sizeof(BIO_BER_CTX));
+        if (ctx == NULL) return(0);
+
+        memset((char *)ctx,0,sizeof(BIO_BER_CTX));
+
+        bi->init=0;
+        bi->ptr=(char *)ctx;
+        bi->flags=0;
+        return(1);
+        }
+
+static int ber_free(BIO *a)
+        {
+        BIO_BER_CTX *b;
+
+        if (a == NULL) return(0);
+        b=(BIO_BER_CTX *)a->ptr;
+        OPENSSL_cleanse(a->ptr,sizeof(BIO_BER_CTX));
+        OPENSSL_free(a->ptr);
+        a->ptr=NULL;
+        a->init=0;
+        a->flags=0;
+        return(1);
+        }
+
+int bio_ber_get_header(BIO *bio, BIO_BER_CTX *ctx)
+        {
+        char buf[64];
+        int i,j,n;
+        int ret;
+        unsigned char *p;
+        unsigned long length
+        int tag;
+        int class;
+        long max;
+
+        BIO_clear_retry_flags(b);
+
+        /* Pack the buffer down if there is a hole at the front */
+        if (ctx->buf_off != 0)
+                {
+                p=ctx->buf;
+                j=ctx->buf_off;
+                n=ctx->buf_len-j;
+                for (i=0; i<n; i++)
+                        {
+                        p[0]=p[j];
+                        p++;
+                        }
+                ctx->buf_len-j;
+                ctx->buf_off=0;
+                }
+
+        /* If there is more room, read some more data */
+        i=BER_BUF_SIZE-ctx->buf_len;
+        if (i)
+                {
+                i=BIO_read(bio->next_bio,&(ctx->buf[ctx->buf_len]),i);
+                if (i <= 0)
+                        {
+                        BIO_copy_next_retry(b);
+                        return(i);
+                        }
+                else
+                        ctx->buf_len+=i;
+                }
+
+        max=ctx->buf_len;
+        p=ctx->buf;
+        ret=ASN1_get_object(&p,&length,&tag,&class,max);
+
+        if (ret & 0x80)
+                {
+                if ((ctx->buf_len < BER_BUF_SIZE) &&
+                        (ERR_GET_REASON(ERR_peek_error()) == ASN1_R_TOO_LONG))
+                        {
+                        ERR_clear_error(); /* clear the error */
+                        BIO_set_retry_read(b);
+                        }
+                return(-1);
+                }
+
+        /* We have no error, we have a header, so make use of it */
+
+        if ((ctx->tag  >= 0) && (ctx->tag != tag))
+                {
+                BIOerr(BIO_F_BIO_BER_GET_HEADER,BIO_R_TAG_MISMATCH);
+                sprintf(buf,"tag=%d, got %d",ctx->tag,tag);
+                ERR_add_error_data(1,buf);
+                return(-1);
+                }
+        if (ret & 0x01)
+        if (ret & V_ASN1_CONSTRUCTED)
+        }
+        
+static int ber_read(BIO *b, char *out, int outl)
+        {
+        int ret=0,i,n;
+        BIO_BER_CTX *ctx;
+
+        BIO_clear_retry_flags(b);
+
+        if (out == NULL) return(0);
+        ctx=(BIO_BER_CTX *)b->ptr;
+
+        if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
+
+        if (ctx->finished) return(0);
+
+again:
+        /* First see if we are half way through reading a block */
+        if (ctx->num_left > 0)
+                {
+                if (ctx->num_left < outl)
+                        n=ctx->num_left;
+                else
+                        n=outl;
+                i=BIO_read(b->next_bio,out,n);
+                if (i <= 0)
+                        {
+                        BIO_copy_next_retry(b);
+                        return(i);
+                        }
+                ctx->num_left-=i;
+                outl-=i;
+                ret+=i;
+                if (ctx->num_left <= 0)
+                        {
+                        ctx->depth--;
+                        if (ctx->depth <= 0)
+                                ctx->finished=1;
+                        }
+                if (outl <= 0)
+                        return(ret);
+                else
+                        goto again;
+                }
+        else    /* we need to read another BER header */
+                {
+                }
+        }
+
+static int ber_write(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 ber_ctrl(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_ex(&(ctx->cipher),NULL,NULL,NULL,NULL,
+                        ctx->cipher.berrypt);
+                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=ber_write(b,NULL,0);
+                        if (i < 0)
+                                {
+                                ret=i;
+                                break;
+                                }
+                        }
+
+                if (!ctx->finished)
+                        {
+                        ctx->finished=1;
+                        ctx->buf_off=0;
+                        ret=EVP_CipherFinal_ex(&(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);
+        }
+
+static long ber_callback_ctrl(BIO *b, int cmd, void *(*fp)())
+        {
+        long ret=1;
+
+        if (b->next_bio == NULL) return(0);
+        switch (cmd)
+                {
+        default:
+                ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
+                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(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_ex(&(ctx->cipher),c,NULL,k,i,e);
+        
+        if (b->callback != NULL)
+                b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L);
+        }
+