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Diffstat (limited to 'crypto/bio/bf_null.c')
| -rw-r--r-- | crypto/bio/bf_null.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/crypto/bio/bf_null.c b/crypto/bio/bf_null.c new file mode 100644 index 0000000000..9864f4a03c --- /dev/null +++ b/crypto/bio/bf_null.c @@ -0,0 +1,194 @@ +/* crypto/bio/bf_null.c */ +/* Copyright (C) 1995-1997 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 "bio.h" +#include "evp.h" + +/* BIO_put and BIO_get both add to the digest, + * BIO_gets returns the digest */ + +#ifndef NOPROTO +static int nullf_write(BIO *h,char *buf,int num); +static int nullf_read(BIO *h,char *buf,int size); +static int nullf_puts(BIO *h,char *str); +static int nullf_gets(BIO *h,char *str,int size); +static long nullf_ctrl(BIO *h,int cmd,long arg1,char *arg2); +static int nullf_new(BIO *h); +static int nullf_free(BIO *data); +#else +static int nullf_write(); +static int nullf_read(); +static int nullf_puts(); +static int nullf_gets(); +static long nullf_ctrl(); +static int nullf_new(); +static int nullf_free(); +#endif + +static BIO_METHOD methods_nullf= + { + BIO_TYPE_NULL_FILTER,"NULL filter", + nullf_write, + nullf_read, + nullf_puts, + nullf_gets, + nullf_ctrl, + nullf_new, + nullf_free, + }; + +BIO_METHOD *BIO_f_null() + { + return(&methods_nullf); + } + +static int nullf_new(bi) +BIO *bi; + { + bi->init=1; + bi->ptr=NULL; + bi->flags=0; + return(1); + } + +static int nullf_free(a) +BIO *a; + { + if (a == NULL) return(0); +/* a->ptr=NULL; + a->init=0; + a->flags=0;*/ + return(1); + } + +static int nullf_read(b,out,outl) +BIO *b; +char *out; +int outl; + { + int ret=0; + + if (out == NULL) return(0); + if (b->next_bio == NULL) return(0); + ret=BIO_read(b->next_bio,out,outl); + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + return(ret); + } + +static int nullf_write(b,in,inl) +BIO *b; +char *in; +int inl; + { + int ret=0; + + if ((in == NULL) || (inl <= 0)) return(0); + if (b->next_bio == NULL) return(0); + ret=BIO_write(b->next_bio,in,inl); + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + return(ret); + } + +static long nullf_ctrl(b,cmd,num,ptr) +BIO *b; +int cmd; +long num; +char *ptr; + { + long ret; + + if (b->next_bio == NULL) return(0); + switch(cmd) + { + 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: + break; + default: + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + } + return(ret); + } + +static int nullf_gets(bp,buf,size) +BIO *bp; +char *buf; +int size; + { + if (bp->next_bio == NULL) return(0); + return(BIO_gets(bp->next_bio,buf,size)); + } + + +static int nullf_puts(bp,str) +BIO *bp; +char *str; + { + if (bp->next_bio == NULL) return(0); + return(BIO_puts(bp->next_bio,str)); + } + + |