1 files changed, 519 insertions, 0 deletions

diff --git a/src/lib/libcrypto/bio/bio_lib.c b/src/lib/libcrypto/bio/bio_lib.c
new file mode 100644
index 0000000000..7a66b0892e
--- /dev/null
+++ b/src/lib/libcrypto/bio/bio_lib.c
@@ -0,0 +1,519 @@
+/* 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 "crypto.h"
+#include "cryptlib.h"
+#include "bio.h"
+#include "stack.h"
+
+static STACK *bio_meth=NULL;
+static int bio_meth_num=0;
+
+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->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,(char *)bio,&bio->ex_data);
+        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);
+#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,(char *)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(b,out,outl)
+BIO *b;
+char *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_UNINITALISED);
+                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(b,in,inl)
+BIO *b;
+char *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_UNINITALISED);
+                return(-2);
+                }
+
+        i=b->method->bwrite(b,in,inl);
+        if (i > 0) b->num_write+=(unsigned long)i;
+
+        if (cb != NULL)
+                i=(int)cb(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;
+        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_UNINITALISED);
+                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(b,in,inl)
+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_UNINITALISED);
+                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(b,cmd,larg,iarg)
+BIO *b;
+int cmd;
+long larg;
+int iarg;
+        {
+        int i;
+
+        i=iarg;
+        return(BIO_ctrl(b,cmd,larg,(char *)&i));
+        }
+
+char *BIO_ptr_ctrl(b,cmd,larg)
+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(b,cmd,larg,parg)
+BIO *b;
+int cmd;
+long larg;
+char *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);
+        }
+
+/* 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;
+        /* 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(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;
+                        }
+
+                /* 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(b)
+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(argl,argp,new_func,dup_func,free_func)
+long argl;
+char *argp;
+int (*new_func)();
+int (*dup_func)();
+void (*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,idx,data)
+BIO *bio;
+int idx;
+char *data;
+        {
+        return(CRYPTO_set_ex_data(&(bio->ex_data),idx,data));
+        }
+
+char *BIO_get_ex_data(bio,idx)
+BIO *bio;
+int idx;
+        {
+        return(CRYPTO_get_ex_data(&(bio->ex_data),idx));
+        }
+