1 files changed, 319 insertions, 0 deletions

diff --git a/src/lib/libcrypto/bio/bss_fd.c b/src/lib/libcrypto/bio/bss_fd.c
new file mode 100644
index 0000000000..d1bf85aae1
--- /dev/null
+++ b/src/lib/libcrypto/bio/bss_fd.c
@@ -0,0 +1,319 @@
+/* crypto/bio/bss_fd.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>
+#define USE_SOCKETS
+#include "cryptlib.h"
+
+#if defined(OPENSSL_NO_POSIX_IO)
+/*
+ * One can argue that one should implement dummy placeholder for
+ * BIO_s_fd here...
+ */
+#else
+/*
+ * As for unconditional usage of "UPLINK" interface in this module.
+ * Trouble is that unlike Unix file descriptors [which are indexes
+ * in kernel-side per-process table], corresponding descriptors on
+ * platforms which require "UPLINK" interface seem to be indexes
+ * in a user-land, non-global table. Well, in fact they are indexes
+ * in stdio _iob[], and recall that _iob[] was the very reason why
+ * "UPLINK" interface was introduced in first place. But one way on
+ * another. Neither libcrypto or libssl use this BIO meaning that
+ * file descriptors can only be provided by application. Therefore
+ * "UPLINK" calls are due...
+ */
+#include "bio_lcl.h"
+
+static int fd_write(BIO *h, const char *buf, int num);
+static int fd_read(BIO *h, char *buf, int size);
+static int fd_puts(BIO *h, const char *str);
+static int fd_gets(BIO *h, char *buf, int size);
+static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int fd_new(BIO *h);
+static int fd_free(BIO *data);
+int BIO_fd_should_retry(int s);
+
+static BIO_METHOD methods_fdp=
+        {
+        BIO_TYPE_FD,"file descriptor",
+        fd_write,
+        fd_read,
+        fd_puts,
+        fd_gets,
+        fd_ctrl,
+        fd_new,
+        fd_free,
+        NULL,
+        };
+
+BIO_METHOD *BIO_s_fd(void)
+        {
+        return(&methods_fdp);
+        }
+
+BIO *BIO_new_fd(int fd,int close_flag)
+        {
+        BIO *ret;
+        ret=BIO_new(BIO_s_fd());
+        if (ret == NULL) return(NULL);
+        BIO_set_fd(ret,fd,close_flag);
+        return(ret);
+        }
+
+static int fd_new(BIO *bi)
+        {
+        bi->init=0;
+        bi->num=-1;
+        bi->ptr=NULL;
+        bi->flags=BIO_FLAGS_UPLINK; /* essentially redundant */
+        return(1);
+        }
+
+static int fd_free(BIO *a)
+        {
+        if (a == NULL) return(0);
+        if (a->shutdown)
+                {
+                if (a->init)
+                        {
+                        UP_close(a->num);
+                        }
+                a->init=0;
+                a->flags=BIO_FLAGS_UPLINK;
+                }
+        return(1);
+        }
+        
+static int fd_read(BIO *b, char *out,int outl)
+        {
+        int ret=0;
+
+        if (out != NULL)
+                {
+                clear_sys_error();
+                ret=UP_read(b->num,out,outl);
+                BIO_clear_retry_flags(b);
+                if (ret <= 0)
+                        {
+                        if (BIO_fd_should_retry(ret))
+                                BIO_set_retry_read(b);
+                        }
+                }
+        return(ret);
+        }
+
+static int fd_write(BIO *b, const char *in, int inl)
+        {
+        int ret;
+        clear_sys_error();
+        ret=UP_write(b->num,in,inl);
+        BIO_clear_retry_flags(b);
+        if (ret <= 0)
+                {
+                if (BIO_fd_should_retry(ret))
+                        BIO_set_retry_write(b);
+                }
+        return(ret);
+        }
+
+static long fd_ctrl(BIO *b, int cmd, long num, void *ptr)
+        {
+        long ret=1;
+        int *ip;
+
+        switch (cmd)
+                {
+        case BIO_CTRL_RESET:
+                num=0;
+        case BIO_C_FILE_SEEK:
+                ret=(long)UP_lseek(b->num,num,0);
+                break;
+        case BIO_C_FILE_TELL:
+        case BIO_CTRL_INFO:
+                ret=(long)UP_lseek(b->num,0,1);
+                break;
+        case BIO_C_SET_FD:
+                fd_free(b);
+                b->num= *((int *)ptr);
+                b->shutdown=(int)num;
+                b->init=1;
+                break;
+        case BIO_C_GET_FD:
+                if (b->init)
+                        {
+                        ip=(int *)ptr;
+                        if (ip != NULL) *ip=b->num;
+                        ret=b->num;
+                        }
+                else
+                        ret= -1;
+                break;
+        case BIO_CTRL_GET_CLOSE:
+                ret=b->shutdown;
+                break;
+        case BIO_CTRL_SET_CLOSE:
+                b->shutdown=(int)num;
+                break;
+        case BIO_CTRL_PENDING:
+        case BIO_CTRL_WPENDING:
+                ret=0;
+                break;
+        case BIO_CTRL_DUP:
+        case BIO_CTRL_FLUSH:
+                ret=1;
+                break;
+        default:
+                ret=0;
+                break;
+                }
+        return(ret);
+        }
+
+static int fd_puts(BIO *bp, const char *str)
+        {
+        int n,ret;
+
+        n=strlen(str);
+        ret=fd_write(bp,str,n);
+        return(ret);
+        }
+
+static int fd_gets(BIO *bp, char *buf, int size)
+        {
+        int ret=0;
+        char *ptr=buf;
+        char *end=buf+size-1;
+
+        while ( (ptr < end) && (fd_read(bp, ptr, 1) > 0) && (ptr[0] != '\n') )
+                ptr++;
+
+        ptr[0]='\0';
+
+        if (buf[0] != '\0')
+                ret=strlen(buf);
+        return(ret);
+        }
+
+int BIO_fd_should_retry(int i)
+        {
+        int err;
+
+        if ((i == 0) || (i == -1))
+                {
+                err=get_last_sys_error();
+
+#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
+                if ((i == -1) && (err == 0))
+                        return(1);
+#endif
+
+                return(BIO_fd_non_fatal_error(err));
+                }
+        return(0);
+        }
+
+int BIO_fd_non_fatal_error(int err)
+        {
+        switch (err)
+                {
+
+#ifdef EWOULDBLOCK
+# ifdef WSAEWOULDBLOCK
+#  if WSAEWOULDBLOCK != EWOULDBLOCK
+        case EWOULDBLOCK:
+#  endif
+# else
+        case EWOULDBLOCK:
+# endif
+#endif
+
+#if defined(ENOTCONN)
+        case ENOTCONN:
+#endif
+
+#ifdef EINTR
+        case EINTR:
+#endif
+
+#ifdef EAGAIN
+#if EWOULDBLOCK != EAGAIN
+        case EAGAIN:
+# endif
+#endif
+
+#ifdef EPROTO
+        case EPROTO:
+#endif
+
+#ifdef EINPROGRESS
+        case EINPROGRESS:
+#endif
+
+#ifdef EALREADY
+        case EALREADY:
+#endif
+                return(1);
+                /* break; */
+        default:
+                break;
+                }
+        return(0);
+        }
+#endif