TRS: Add initial template for Transparent Reader Support

We borrow the same design ideas from osdp_file.[ch] as that came out
pretty neatly without introducing any regressions to existing
functionality. So to enable TRS, do one of:

    cmake -DCONFIG_OSDP_TRS=on
    (or)
    configure.sh --enable-trs

Signed-off-by: Siddharth Chandrasekaran <[email protected]>

configure.sh

@@ -23,6 +23,7 @@ usage() {
 	  --static-pd                  Setup PD single statically
 	  --lib-only                   Only build the library
 	  --file                       Compile support for file tx command
+	  --enable-trs                 Enable support for Transparant Reader Support
 	  --osdpctl                    Build osdpctl tool
 	  -f, --force                  Use this flags to override some checks
 	  -h, --help                   Print this help
@@ -41,6 +42,7 @@ while [ $# -gt 0 ]; do
 	--static-pd)           STATIC_PD=1;;
 	--lib-only)            LIB_ONLY=1;;
 	--file)                FILE=1;;
+	--enable-trs)          ENABLE_TRS=1;;
 	--osdpctl)             OSDPCTL=1;;
 	-f|--force)            FORCE=1;;
 	-h|--help)             usage; exit 0;;
@@ -90,6 +92,10 @@ if [[ ! -z "${FILE}" ]]; then
 	CCFLAGS+=" -DCONFIG_OSDP_FILE"
 fi
 
+if [[ ! -z "${ENABLE_TRS}" ]]; then
+	CCFLAGS+=" -DCONFIG_OSDP_TRS"
+fi
+
 ## Repo meta data
 echo "Extracting source code meta information"
 PROJECT_VERSION=$(perl -ne 'print if s/^project\(libosdp VERSION ([0-9.]+)\)$/\1/' CMakeLists.txt)
@@ -140,6 +146,10 @@ if [[ ! -z "${FILE}" ]]; then
 	LIBOSDP_SOURCES+=" src/osdp_file.c"
 fi
 
+if [[ ! -z "${ENABLE_TRS}" ]]; then
+	LIBOSDP_SOURCES+=" src/osdp_trs.c"
+fi
+
 if [[ ! -z "${OSDPCTL}" ]]; then
 	TARGETS+=" osdpctl.elf"
 fi

src/CMakeLists.txt

@@ -9,6 +9,7 @@ option(CONFIG_OSDP_PACKET_TRACE "Enable raw packet trace for diagnostics" OFF)
 option(CONFIG_OSDP_SKIP_MARK_BYTE "Don't send the leading mark byte (0xFF)" OFF)
 option(CONFIG_DISABLE_PRETTY_LOGGING "Don't colorize log ouputs" OFF)
 option(CONFIG_OSDP_FILE "Enabled support for OSDP File Transfer" OFF)
+option(CONFIG_OSDP_TRS "Enabled Transparent Reader Support" OFF)
 
 if (CONFIG_OSDP_PACKET_TRACE)
 	list(APPEND LIB_OSDP_DEFINITIONS "-DCONFIG_OSDP_PACKET_TRACE")
@@ -30,6 +31,10 @@ if (CONFIG_OSDP_FILE)
 	list(APPEND LIB_OSDP_DEFINITIONS "-DCONFIG_OSDP_FILE")
 endif()
 
+if (CONFIG_OSDP_TRS)
+	list(APPEND LIB_OSDP_DEFINITIONS "-DCONFIG_OSDP_TRS")
+endif()
+
 # static and shared library names
 set(LIB_OSDP_SHARED osdp)
 set(LIB_OSDP_STATIC osdpstatic)
@@ -63,6 +68,12 @@ if (CONFIG_OSDP_FILE)
 	)
 endif()
 
+if (CONFIG_OSDP_TRS)
+	list(APPEND LIB_OSDP_SOURCES
+		${CMAKE_CURRENT_SOURCE_DIR}/osdp_trs.c
+	)
+endif()
+
 list(APPEND LIB_OSDP_INCLUDE_DIRS
 	${PROJECT_SOURCE_DIR}/utils/include
 	${PROJECT_SOURCE_DIR}/include

src/osdp_cp.c

@@ -8,6 +8,7 @@
 
 #include "osdp_common.h"
 #include "osdp_file.h"
+#include "osdp_trs.h"
 
 #define LOG_TAG "CP : "
 

src/osdp_pd.c

@@ -6,6 +6,7 @@
 
 #include "osdp_common.h"
 #include "osdp_file.h"
+#include "osdp_trs.h"
 
 #ifndef CONFIG_OSDP_STATIC_PD
 #include <stdlib.h>

src/osdp_trs.c

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2021 Siddharth Chandrasekaran <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _OSDP_TRS_H_
+#define _OSDP_TRS_H_
+
+#include "osdp_common.h"
+
+#ifdef CONFIG_OSDP_TRS
+
+#else /* CONFIG_OSDP_TRS */
+
+#endif /* CONFIG_OSDP_TRS */
+
+#endif /* _OSDP_TRS_H_ */

src/osdp_trs.h

@@ -0,0 +1,5 @@
+/*
+ * Copyright (c) 2021 Siddharth Chandrasekaran <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */