X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fbio%2Fbss_fd.c;h=d1bf85aae1750a0307b821e8b05f4b314693faa0;hb=e97359435ee15e6d2c0580c76a58040e8dc3ce60;hp=686c4909a2a8101fda0b1275ab7e9be494a59c42;hpb=78414a6a897db42c9bcf06aa21c705811ab33921;p=oweals%2Fopenssl.git

diff --git a/crypto/bio/bss_fd.c b/crypto/bio/bss_fd.c
index 686c4909a2..d1bf85aae1 100644
--- a/crypto/bio/bss_fd.c
+++ b/crypto/bio/bss_fd.c
@@ -56,7 +56,264 @@
  * [including the GNU Public Licence.]
  */
 
-#define BIO_FD
-#include "bss_sock.c"
-#undef BIO_FD
+#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