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Diffstat (limited to 'crypto/bio/bio_lib.c')
| -rw-r--r-- | crypto/bio/bio_lib.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/crypto/bio/bio_lib.c b/crypto/bio/bio_lib.c new file mode 100644 index 0000000000..78e896f9ae --- /dev/null +++ b/crypto/bio/bio_lib.c @@ -0,0 +1,447 @@ +/* crypto/bio/bio_lib.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" + +BIO *BIO_new(method) +BIO_METHOD *method; + { + BIO *ret=NULL; + + ret=(BIO *)Malloc(sizeof(BIO)); + if (ret == NULL) + { + BIOerr(BIO_F_BIO_NEW,ERR_R_MALLOC_FAILURE); + return(NULL); + } + if (!BIO_set(ret,method)) + { + Free(ret); + ret=NULL; + } + return(ret); + } + +int BIO_set(bio,method) +BIO *bio; +BIO_METHOD *method; + { + bio->method=method; + bio->callback=NULL; + bio->cb_arg=NULL; + bio->init=0; + bio->shutdown=1; + bio->num=0; + bio->flags=0; + bio->retry_reason=0; + bio->ptr=NULL; + bio->prev_bio=NULL; + bio->next_bio=NULL; + bio->references=1; + bio->num_read=0L; + bio->num_write=0L; + if (method->create != NULL) + if (!method->create(bio)) + return(0); + return(1); + } + +int BIO_free(a) +BIO *a; + { + int ret=0,i; + + if (a == NULL) return(0); + + i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO); + + if (i > 0) return(1); +#ifdef REF_CHECK + if (i < 0) + { + fprintf(stderr,"BIO_free, bad reference count\n"); + abort(); + } +#endif + if ((a->callback != NULL) && + ((i=(int)a->callback(a,BIO_CB_FREE,NULL,0,0L,1L)) <= 0)) + return(i); + + if ((a->method == NULL) || (a->method->destroy == NULL)) return(1); + ret=a->method->destroy(a); + Free(a); + return(1); + } + +int BIO_read(b,out,outl) +BIO *b; +char *out; +int outl; + { + int i; + + if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) + { + BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD); + return(-2); + } + + if ((b->callback != NULL) && + ((i=(int)b->callback(b,BIO_CB_READ,out,outl,0L,1L)) <= 0)) + return(i); + + if (!b->init) + { + BIOerr(BIO_F_BIO_READ,BIO_R_UNINITALISED); + return(-2); + } + + i=b->method->bread(b,out,outl); + if (i > 0) b->num_read+=(unsigned long)i; + + if (b->callback != NULL) + i=(int)b->callback(b,BIO_CB_READ|BIO_CB_RETURN,out,outl, + 0L,(long)i); + return(i); + } + +int BIO_write(b,in,inl) +BIO *b; +char *in; +int inl; + { + int i; + + if ((b == NULL) || (b->method == NULL) || (b->method->bwrite == NULL)) + { + BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD); + return(-2); + } + + if ((b->callback != NULL) && + ((i=(int)b->callback(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0)) + return(i); + + if (!b->init) + { + BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITALISED); + return(-2); + } + + i=b->method->bwrite(b,in,inl); + if (i > 0) b->num_write+=(unsigned long)i; + + if (b->callback != NULL) + i=(int)b->callback(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl, + 0L,(long)i); + return(i); + } + +int BIO_puts(b,in) +BIO *b; +char *in; + { + int i; + + if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) + { + BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD); + return(-2); + } + + if ((b->callback != NULL) && + ((i=(int)b->callback(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0)) + return(i); + + if (!b->init) + { + BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITALISED); + return(-2); + } + + i=b->method->bputs(b,in); + + if (b->callback != NULL) + i=(int)b->callback(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0, + 0L,(long)i); + return(i); + } + +int BIO_gets(b,in,inl) +BIO *b; +char *in; +int inl; + { + int i; + + if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) + { + BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD); + return(-2); + } + + if ((b->callback != NULL) && + ((i=(int)b->callback(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0)) + return(i); + + if (!b->init) + { + BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITALISED); + return(-2); + } + + i=b->method->bgets(b,in,inl); + + if (b->callback != NULL) + i=(int)b->callback(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl, + 0L,(long)i); + return(i); + } + +long BIO_ctrl_int(b,cmd,larg,iarg) +BIO *b; +int cmd; +long larg; +int iarg; + { + int i; + + i=iarg; + return(BIO_ctrl(b,cmd,larg,(char *)&i)); + } + +long BIO_ctrl(b,cmd,larg,parg) +BIO *b; +int cmd; +long larg; +char *parg; + { + long ret; + + if (b == NULL) return(0); + + if ((b->method == NULL) || (b->method->ctrl == NULL)) + { + BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD); + return(-2); + } + + if ((b->callback != NULL) && + ((ret=b->callback(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0)) + return(ret); + + ret=b->method->ctrl(b,cmd,larg,parg); + + if (b->callback != NULL) + ret=b->callback(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd, + larg,ret); + return(ret); + } + +/* put the 'bio' on the end of b's list of operators */ +BIO *BIO_push(b,bio) +BIO *b,*bio; + { + BIO *lb; + + if (b == NULL) return(bio); + lb=b; + while (lb->next_bio != NULL) + lb=lb->next_bio; + lb->next_bio=bio; + if (bio != NULL) + bio->prev_bio=lb; + BIO_ctrl(b,BIO_CTRL_PUSH,0,NULL); + return(b); + } + +/* Remove the first and return the rest */ +BIO *BIO_pop(b) +BIO *b; + { + BIO *ret; + + if (b == NULL) return(NULL); + ret=b->next_bio; + + if (b->prev_bio != NULL) + b->prev_bio->next_bio=b->next_bio; + if (b->next_bio != NULL) + b->next_bio->prev_bio=b->prev_bio; + + b->next_bio=NULL; + b->prev_bio=NULL; + BIO_ctrl(b,BIO_CTRL_POP,0,NULL); + return(ret); + } + +BIO *BIO_get_retry_BIO(bio,reason) +BIO *bio; +int *reason; + { + BIO *b,*last; + + b=last=bio; + for (;;) + { + if (!BIO_should_retry(b)) break; + last=b; + b=b->next_bio; + if (b == NULL) break; + } + if (reason != NULL) *reason=last->retry_reason; + return(last); + } + +int BIO_get_retry_reason(bio) +BIO *bio; + { + return(bio->retry_reason); + } + +BIO *BIO_find_type(bio,type) +BIO *bio; +int type; + { + int mt,mask; + + mask=type&0xff; + do { + if (bio->method != NULL) + { + mt=bio->method->type; + + if (!mask) + { + if (mt & type) return(bio); + } + else if (mt == type) + return(bio); + } + bio=bio->next_bio; + } while (bio != NULL); + return(NULL); + } + +void BIO_free_all(bio) +BIO *bio; + { + BIO *b; + int ref; + + while (bio != NULL) + { + b=bio; + ref=b->references; + bio=bio->next_bio; + BIO_free(b); + /* Since ref count > 1, don't free anyone else. */ + if (ref > 1) break; + } + } + +BIO *BIO_dup_chain(in) +BIO *in; + { + BIO *ret=NULL,*eoc=NULL,*bio,*new; + + for (bio=in; bio != NULL; bio=bio->next_bio) + { + if ((new=BIO_new(bio->method)) == NULL) goto err; + new->callback=bio->callback; + new->cb_arg=bio->cb_arg; + new->init=bio->init; + new->shutdown=bio->shutdown; + new->flags=bio->flags; + + /* This will let SSL_s_sock() work with stdin/stdout */ + new->num=bio->num; + + if (!BIO_dup_state(bio,(char *)new)) + { + BIO_free(new); + goto err; + } + if (ret == NULL) + { + eoc=new; + ret=eoc; + } + else + { + BIO_push(eoc,new); + eoc=new; + } + } + return(ret); +err: + if (ret != NULL) + BIO_free(ret); + return(NULL); + } + +void BIO_copy_next_retry(b) +BIO *b; + { + BIO_set_flags(b,BIO_get_retry_flags(b->next_bio)); + b->retry_reason=b->next_bio->retry_reason; + } + |