--- /dev/null
+/* crypto/bio/bss_sock.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"
+
+#ifndef OPENSSL_NO_SOCK
+
+#include <openssl/bio.h>
+
+#ifdef WATT32
+#define sock_write SockWrite /* Watt-32 uses same names */
+#define sock_read SockRead
+#define sock_puts SockPuts
+#endif
+
+static int sock_write(BIO *h, const char *buf, int num);
+static int sock_read(BIO *h, char *buf, int size);
+static int sock_puts(BIO *h, const char *str);
+static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int sock_new(BIO *h);
+static int sock_free(BIO *data);
+int BIO_sock_should_retry(int s);
+
+static BIO_METHOD methods_sockp=
+ {
+ BIO_TYPE_SOCKET,
+ "socket",
+ sock_write,
+ sock_read,
+ sock_puts,
+ NULL, /* sock_gets, */
+ sock_ctrl,
+ sock_new,
+ sock_free,
+ NULL,
+ };
+
+BIO_METHOD *BIO_s_socket(void)
+ {
+ return(&methods_sockp);
+ }
+
+BIO *BIO_new_socket(int fd, int close_flag)
+ {
+ BIO *ret;
+
+ ret=BIO_new(BIO_s_socket());
+ if (ret == NULL) return(NULL);
+ BIO_set_fd(ret,fd,close_flag);
+ return(ret);
+ }
+
+static int sock_new(BIO *bi)
+ {
+ bi->init=0;
+ bi->num=0;
+ bi->ptr=NULL;
+ bi->flags=0;
+ return(1);
+ }
+
+static int sock_free(BIO *a)
+ {
+ if (a == NULL) return(0);
+ if (a->shutdown)
+ {
+ if (a->init)
+ {
+ SHUTDOWN2(a->num);
+ }
+ a->init=0;
+ a->flags=0;
+ }
+ return(1);
+ }
+
+static int sock_read(BIO *b, char *out, int outl)
+ {
+ int ret=0;
+
+ if (out != NULL)
+ {
+ clear_socket_error();
+ ret=readsocket(b->num,out,outl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0)
+ {
+ if (BIO_sock_should_retry(ret))
+ BIO_set_retry_read(b);
+ }
+ }
+ return(ret);
+ }
+
+static int sock_write(BIO *b, const char *in, int inl)
+ {
+ int ret;
+
+ clear_socket_error();
+ ret=writesocket(b->num,in,inl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0)
+ {
+ if (BIO_sock_should_retry(ret))
+ BIO_set_retry_write(b);
+ }
+ return(ret);
+ }
+
+static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
+ {
+ long ret=1;
+ int *ip;
+
+ switch (cmd)
+ {
+ case BIO_C_SET_FD:
+ sock_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_DUP:
+ case BIO_CTRL_FLUSH:
+ ret=1;
+ break;
+ default:
+ ret=0;
+ break;
+ }
+ return(ret);
+ }
+
+static int sock_puts(BIO *bp, const char *str)
+ {
+ int n,ret;
+
+ n=strlen(str);
+ ret=sock_write(bp,str,n);
+ return(ret);
+ }
+
+int BIO_sock_should_retry(int i)
+ {
+ int err;
+
+ if ((i == 0) || (i == -1))
+ {
+ err=get_last_socket_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_sock_non_fatal_error(err));
+ }
+ return(0);
+ }
+
+int BIO_sock_non_fatal_error(int err)
+ {
+ switch (err)
+ {
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE)
+# if defined(WSAEWOULDBLOCK)
+ case WSAEWOULDBLOCK:
+# endif
+
+# if 0 /* This appears to always be an error */
+# if defined(WSAENOTCONN)
+ case WSAENOTCONN:
+# endif
+# endif
+#endif
+
+#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 /* #ifndef OPENSSL_NO_SOCK */
projects / cassiopeia.git / blobdiff