+++ /dev/null
-/*
- * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/* crypto/bio/bio_lib.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 <openssl/crypto.h>
-#include "cryptlib.h"
-#include <openssl/bio.h>
-#include <openssl/stack.h>
-
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *bio_meth=NULL;
-static int bio_meth_num=0;
-
-BIO *BIO_new(const 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 *bio, const BIO_METHOD *method)
- {
- bio->method=method;
- bio->callback=NULL;
- bio->cb_arg=NULL;
- bio->init=0;
- bio->shutdown=1;
- bio->flags=0;
- bio->retry_reason=0;
- bio->num=0;
- bio->ptr=NULL;
- bio->prev_bio=NULL;
- bio->next_bio=NULL;
- bio->references=1;
- bio->num_read=0L;
- bio->num_write=0L;
- CRYPTO_new_ex_data(bio_meth,bio,&bio->ex_data);
- if (method->create != NULL)
- if (!method->create(bio))
- return(0);
- return(1);
- }
-
-int BIO_free(BIO *a)
- {
- int ret=0,i;
-
- if (a == NULL) return(0);
-
- i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO);
-#ifdef REF_PRINT
- REF_PRINT("BIO",a);
-#endif
- 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);
-
- CRYPTO_free_ex_data(bio_meth,a,&a->ex_data);
-
- if ((a->method == NULL) || (a->method->destroy == NULL)) return(1);
- ret=a->method->destroy(a);
- Free(a);
- return(1);
- }
-
-int BIO_read(BIO *b, void *out, int outl)
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL))
- {
- BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_READ,out,outl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_READ,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bread(b,out,outl);
-
- if (i > 0) b->num_read+=(unsigned long)i;
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_READ|BIO_CB_RETURN,out,outl,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_write(BIO *b, const void *in, int inl)
- {
- int i;
- long (*cb)();
-
- if (b == NULL)
- return(0);
-
- cb=b->callback;
- if ((b->method == NULL) || (b->method->bwrite == NULL))
- {
- BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bwrite(b,in,inl);
-
- if (i > 0) b->num_write+=(unsigned long)i;
-
- /* This is evil and not thread safe. If the BIO has been freed,
- * we must not call the callback. The only way to be able to
- * determine this is the reference count which is now invalid since
- * the memory has been free()ed.
- */
- if (b->references <= 0) abort();
- if (cb != NULL) /* && (b->references >= 1)) */
- i=(int)cb(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_puts(BIO *b, const char *in)
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL))
- {
- BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bputs(b,in);
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_gets(BIO *b, char *in, int inl)
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL))
- {
- BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bgets(b,in,inl);
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl,
- 0L,(long)i);
- return(i);
- }
-
-long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg)
- {
- int i;
-
- i=iarg;
- return(BIO_ctrl(b,cmd,larg,(char *)&i));
- }
-
-char *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
- {
- char *p=NULL;
-
- if (BIO_ctrl(b,cmd,larg,(char *)&p) <= 0)
- return(NULL);
- else
- return(p);
- }
-
-long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
- {
- long ret;
- long (*cb)();
-
- if (b == NULL) return(0);
-
- if ((b->method == NULL) || (b->method->ctrl == NULL))
- {
- BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((ret=cb(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0))
- return(ret);
-
- ret=b->method->ctrl(b,cmd,larg,parg);
-
- if (cb != NULL)
- ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd,
- larg,ret);
- return(ret);
- }
-
-long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)())
- {
- long ret;
- long (*cb)();
-
- if (b == NULL) return(0);
-
- if ((b->method == NULL) || (b->method->callback_ctrl == NULL))
- {
- BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((ret=cb(b,BIO_CB_CTRL,(void *)&fp,cmd,0,1L)) <= 0))
- return(ret);
-
- ret=b->method->callback_ctrl(b,cmd,fp);
-
- if (cb != NULL)
- ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,(void *)&fp,cmd,
- 0,ret);
- return(ret);
- }
-
-/* It is unfortunate to duplicate in functions what the BIO_(w)pending macros
- * do; but those macros have inappropriate return type, and for interfacing
- * from other programming languages, C macros aren't much of a help anyway. */
-size_t BIO_ctrl_pending(BIO *bio)
- {
- return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
- }
-
-size_t BIO_ctrl_wpending(BIO *bio)
- {
- return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
- }
-
-
-/* put the 'bio' on the end of b's list of operators */
-BIO *BIO_push(BIO *b, BIO *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;
- /* called to do internal processing */
- BIO_ctrl(b,BIO_CTRL_PUSH,0,NULL);
- return(b);
- }
-
-/* Remove the first and return the rest */
-BIO *BIO_pop(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 *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)
- {
- return(bio->retry_reason);
- }
-
-BIO *BIO_find_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 *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(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;
- }
-
- /* copy app data */
- if (!CRYPTO_dup_ex_data(bio_meth,&new->ex_data,&bio->ex_data))
- 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(BIO *b)
- {
- BIO_set_flags(b,BIO_get_retry_flags(b->next_bio));
- b->retry_reason=b->next_bio->retry_reason;
- }
-
-int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
- {
- bio_meth_num++;
- return(CRYPTO_get_ex_new_index(bio_meth_num-1,&bio_meth,
- argl,argp,new_func,dup_func,free_func));
- }
-
-int BIO_set_ex_data(BIO *bio, int idx, void *data)
- {
- return(CRYPTO_set_ex_data(&(bio->ex_data),idx,data));
- }
-
-void *BIO_get_ex_data(BIO *bio, int idx)
- {
- return(CRYPTO_get_ex_data(&(bio->ex_data),idx));
- }
-
-unsigned long BIO_number_read(BIO *bio)
-{
- if(bio) return bio->num_read;
- return 0;
-}
-
-unsigned long BIO_number_written(BIO *bio)
-{
- if(bio) return bio->num_write;
- return 0;
-}
projects / apple / security.git / blobdiff