--- /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