TclTLS
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Comment:Updated to support optionally enabling/disabling a faster path for talking to the underlying channel
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SHA1: d25ae3c23284afa1f3dd1ee6107619f89066cd2d
User & Date: rkeene on 2016-12-11 19:20:15
Other Links: branch diff | manifest | tags
Context
2016-12-11
20:05
Fixed pass-through to fetch file descriptor using a pointer check-in: b5ba86f2be user: rkeene tags: wip-fix-io-layer
19:20
Updated to support optionally enabling/disabling a faster path for talking to the underlying channel check-in: d25ae3c232 user: rkeene tags: wip-fix-io-layer
19:12
Corrected extraneous format specifier check-in: ff4801f473 user: rkeene tags: wip-fix-io-layer
Changes
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Modified configure.in from [1947c51db2] to [7c9a116cf5].

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fi

dnl Find "xxd" so we can build the tls.tcl.h file
AC_CHECK_PROG([XXD], [xxd], [xxd], [__xxd__not__found])

dnl Find "pkg-config" since we need to use it
AC_CHECK_TOOL([PKGCONFIG], [pkg-config], [false])

dnl Determine if we have been asked to use a fast path if possible
tcltls_ssl_fastpath='yes'
AC_ARG_ENABLE([ssl-fastpath], AS_HELP_STRING([--disable-ssl-fast-path], [disable using the underlying file descriptor for talking directly to the SSL library]), [
	if test "$enableval" = 'no'; then
		tcltls_ssl_fastpath='no'
	fi
])

if test "$tcltls_ssl_fastpath" = 'yes'; then
	AC_DEFINE(TCLTLS_SSL_USE_FASTPATH, [1], [Define this to enable using the underlying file descriptor for talking directly to the SSL library])
fi

dnl Determine if we have been asked to statically link to the SSL library
TCLEXT_TLS_STATIC_SSL='no'
AC_ARG_ENABLE([static-ssl], AS_HELP_STRING([--enable-static-ssl], [enable statically linking to the specified SSL library]), [
	if test "$enableval" = 'yes'; then
		TCLEXT_TLS_STATIC_SSL='yes'
	fi
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Modified tlsBIO.c from [e135f89793] to [f8c02fc8c8].

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	if (statePtr == NULL) {
		dprintf("Asked to setup a NULL state, just creating the initial configuration");

		return(NULL);
	}

#ifdef TCLTLS_SSL_USE_FASTPATH
	/*
	 * If the channel can be mapped back to a file descriptor, just use the file descriptor
	 * with the SSL library since it will likely be optimized for this.
	 */
	parentChannel = Tls_GetParent(statePtr);
	parentChannelType = Tcl_GetChannelType(parentChannel);
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			}
		}
	}

	if (validParentChannelFd) {
		dprintf("We found a shortcut, this channel is backed by a file descriptor: %i", parentChannelFdIn);
		bio = BIO_new_socket(parentChannelFd, flags);
		return(bio);
	}
	} else {
		dprintf("Falling back to Tcl I/O for this channel");
		bio = BIO_new(BioMethods);
		BIO_set_data(bio, statePtr);
		BIO_set_shutdown(bio, flags);
		BIO_set_init(bio, 1);

	dprintf("Falling back to Tcl I/O for this channel");
#endif

	bio = BIO_new(BioMethods);
	BIO_set_data(bio, statePtr);
	BIO_set_shutdown(bio, flags);
	BIO_set_init(bio, 1);
	}

	return(bio);
}

static int BioWrite(BIO *bio, CONST char *buf, int bufLen) {
	Tcl_Channel chan;
	int ret;
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