summaryrefslogtreecommitdiffstats
path: root/cmake/modules/UseAsn2Wrs.cmake
blob: 271126c1a32c2069aee1d0e4886d6e6ea895ef8d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
# - Convert ASN.1 file into C source and header files that can be used to create a wireshark dissector
#
#  A2W_OUTPUT_DIR   - directory where the generated packet-${PROTOCOL_NAME}.c is
#                     saved. The default location is meant for the Wireshark
#                     source tree. For external dissectors, set it to the
#                     absolute path (e.g. "${CMAKE_CURRENT_SOURCE_DIR}").

function(ASN2WRS)
	if(NOT PROTO_OPT)
		set(PROTO_OPT -p ${PROTOCOL_NAME})
	elseif(PROTO_OPT STREQUAL "_EMPTY_")
		set(PROTO_OPT)
	endif()

	if(NOT A2W_OUTPUT_DIR)
		set(A2W_OUTPUT_DIR "${CMAKE_SOURCE_DIR}/epan/dissectors")
	endif()

	set(DISSECTOR "${A2W_OUTPUT_DIR}/packet-${PROTOCOL_NAME}.c")

	# Besides the file dependency (for timestamp comparison), add a target such
	# that other directories can request it to be built (ordering dependency).
	foreach(_v EXTRA_CNF EXPORT_DEPENDS)
		set(${_v}_targets)
		foreach(entry IN LISTS ${_v})
			string(REGEX MATCH "[^/]+-exp\\.cnf$" _exp_cnf_filename "${entry}")
			if(_exp_cnf_filename)
				list(APPEND ${_v}_targets generate-${_exp_cnf_filename})
			endif()
		endforeach()
	endforeach()

	if(NOT ENABLE_DEBUG_A2W)
		set(A2W_FLAGS ${A2W_FLAGS} -L)
	endif()

	# Creates a dissector in the source directory and store the timestamp.
	add_custom_command(
		OUTPUT packet-${PROTOCOL_NAME}-stamp
		COMMAND "${Python3_EXECUTABLE}"
			${CMAKE_SOURCE_DIR}/tools/asn2wrs.py
			${A2W_FLAGS}
			${PROTO_OPT}
			-c "${CMAKE_CURRENT_SOURCE_DIR}/${PROTOCOL_NAME}.cnf"
			-s "${CMAKE_CURRENT_SOURCE_DIR}/packet-${PROTOCOL_NAME}-template"
			-D "${CMAKE_CURRENT_SOURCE_DIR}"
			-O "${A2W_OUTPUT_DIR}"
			${EXT_ASN_FILE_LIST} ${ASN_FILE_LIST} ${EXT_ASN_FILE_LIST_LATE}
		COMMAND
			"${Python3_EXECUTABLE}" -c
				"import shutil, sys; x,s,d=sys.argv; open(d, 'w'); shutil.copystat(s, d)"
				"${A2W_OUTPUT_DIR}/packet-${PROTOCOL_NAME}.c"
				packet-${PROTOCOL_NAME}-stamp
		DEPENDS
			${CMAKE_SOURCE_DIR}/tools/asn2wrs.py
			${SRC_FILES}
			${EXTRA_CNF_targets}
			${EXTRA_CNF}
		VERBATIM
	)

	add_custom_target(generate_dissector-${PROTOCOL_NAME} ALL
		DEPENDS packet-${PROTOCOL_NAME}-stamp
	)

	foreach(_asn2wrs_export_file IN LISTS EXPORT_FILES)
		add_custom_command(
			OUTPUT ${_asn2wrs_export_file}
			COMMAND "${Python3_EXECUTABLE}"
				${CMAKE_SOURCE_DIR}/tools/asn2wrs.py
				-E
				${A2W_FLAGS}
				${PROTO_OPT}
				-c "${CMAKE_CURRENT_SOURCE_DIR}/${PROTOCOL_NAME}.cnf"
				-D "${CMAKE_CURRENT_SOURCE_DIR}"
				${EXT_ASN_FILE_LIST} ${ASN_FILE_LIST} ${EXT_ASN_FILE_LIST_LATE}
			DEPENDS
				${CMAKE_SOURCE_DIR}/tools/asn2wrs.py
				${SRC_FILES}
				${EXPORT_DEPENDS_targets}
				${EXPORT_DEPENDS}
		)
		# This target enables other dissectors to trigger the -exp cnf build
		add_custom_target(generate-${_asn2wrs_export_file}
			DEPENDS ${_asn2wrs_export_file}
		)
	endforeach()

endfunction()