High level conclusions

Fuzzers reach 59.75% code coverage.

Fuzzers reach 54.24% of cyclomatic complexity.

Fuzzers reach 63.22% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

2080 / 3290

Cyclomatic complexity statically reachable by fuzzers

7510 / 13844

Runtime code coverage of functions

1966 / 3290

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: fuzz_mdns_message

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	29	32.5%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	60	67.4%
All colors	89	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
23	23	1 : View List ['_q_answer']	23	23	_cache	call site: 00084	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:520
0	0	None	39	142	mdnsd_in	call site: 00064	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:758
0	0	None	39	142	mdnsd_in	call site: 00066	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:762
0	0	None	23	23	_c_expire	call site: 00072	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:420
0	0	None	8	8	_a_match	call site: 00041	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:196
0	0	None	2	2	_r_next	call site: 00036	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:164
0	0	None	2	2	_q_next	call site: 00084	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:134
0	0	None	0	0	message_parse	call site: 00001	/src/open62541/deps/mdnsd/libmdnsd/1035.c:456
0	0	None	0	0	message_parse	call site: 00012	/src/open62541/deps/mdnsd/libmdnsd/1035.c:518
0	0	None	0	0	_label	call site: 00009	/src/open62541/deps/mdnsd/libmdnsd/1035.c:148
0	0	None	0	0	mdnsd_in	call site: 00034	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:681
0	0	None	0	0	mdnsd_in	call site: 00061	/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c:752

Runtime coverage analysis

Covered functions

17

Functions that are reachable but not covered

20

Reachable functions

37

Percentage of reachable functions covered

45.95%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_message.cc	1
/src/open62541/deps/mdnsd/libmdnsd/1035.c	6
/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c	20

Fuzzer: fuzz_src_ua_util

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	12	36.3%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	21	63.6%
All colors	33	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
4	6	UA_memoryManager_setLimitFromLast4Bytes	call site: 00006	removeFromMap
3	2	UA_memoryManager_setLimitFromLast4Bytes	call site: 00002	addToMap
3	14	UA_memoryManager_setLimitFromLast4Bytes	call site: 00014	removeFromMap
2	11	UA_memoryManager_setLimitFromLast4Bytes	call site: 00011	addToMap

Runtime coverage analysis

Covered functions

8

Functions that are reachable but not covered

13

Reachable functions

23

Percentage of reachable functions covered

43.48%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_src_ua_util.cc	3
/src/open62541/tests/fuzz/custom_memory_manager.c	7
/src/open62541/src/util/ua_util.c	4

Fuzzer: fuzz_base64_encode

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	3	100.%
All colors	3	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	0	None	0	4	UA_base64	call site: 00001	/src/open62541/deps/base64.c:28
0	0	None	0	0	UA_base64	call site: 00001	/src/open62541/deps/base64.c:18
0	0	None	0	0	UA_base64	call site: 00001	/src/open62541/deps/base64.c:24

Runtime coverage analysis

Covered functions

3

Functions that are reachable but not covered

0

Reachable functions

3

Percentage of reachable functions covered

100.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_base64_encode.cc	1
/src/open62541/deps/base64.c	2

Fuzzer: fuzz_json_decode

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1	4.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	24	96.0%
All colors	25	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	11	2 : View List ['UA_copy', 'UA_Array_delete']	0	11	UA_Array_copy	call site: 00000	/src/open62541/src/ua_types.c:1970
0	0	None	0	114	UA_decodeJson	call site: 00002	/src/open62541/src/ua_types_encoding_json.c:2863
0	0	None	0	114	UA_decodeJson	call site: 00002	/src/open62541/src/ua_types_encoding_json.c:2872
0	0	None	0	112	tokenize	call site: 00004	/src/open62541/src/ua_types_encoding_json.c:2843
0	0	None	0	84	cj5_parse	call site: 00004	/src/open62541/deps/cj5.c:354
0	0	None	0	47	DiagnosticInfoInner_decodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:2616
0	0	None	0	36	ExtensionObject_decodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:2515
0	0	None	0	36	Variant_decodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:2422
0	0	None	0	30	String_decodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:1725
0	0	None	0	18	clearStructure	call site: 00000	/src/open62541/src/ua_types.c:1388
0	0	None	0	11	UA_Array_copy	call site: 00000	/src/open62541/src/ua_types.c:1967
0	0	None	0	0	UA_unbase64	call site: 00000	/src/open62541/deps/base64.c:87

Runtime coverage analysis

Covered functions

106

Functions that are reachable but not covered

0

Reachable functions

15

Percentage of reachable functions covered

100.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_json_decode.cc	1
/work/open62541/src_generated/open62541/types_generated_handling.h	2
/src/open62541/src/ua_types_encoding_json.c	2
/src/open62541/deps/cj5.c	7
/src/open62541/src/ua_types.c	1

Fuzzer: fuzz_binary_decode

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	14	27.4%
gold	[1:9]	1	1.96%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	36	70.5%
All colors	51	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
3	7	3 : View List ['exchangeBuffer', 'isGood', 'isTrue']	3	7	encodeWithExchangeBuffer	call site: 00034	/src/open62541/src/ua_types_encoding_binary.c:104
0	24	2 : View List ['UA_calcSizeBinary', 'UA_ByteString_allocBuffer']	0	39	UA_encodeBinary	call site: 00042	/src/open62541/src/ua_types_encoding_binary.c:1631
0	0	None	4	4	addToMap	call site: 00003	/src/open62541/tests/fuzz/custom_memory_manager.c:49
0	0	None	0	125	ExtensionObject_encodeBinary	call site: 00000	/src/open62541/src/ua_types_encoding_binary.c:841
0	0	None	0	106	Variant_encodeBinary	call site: 00000	/src/open62541/src/ua_types_encoding_binary.c:990
0	0	None	0	57	copyStructure	call site: 00000	/src/open62541/src/ua_types.c:1256
0	0	None	0	57	diagnosticInfoOrder	call site: 00000	/src/open62541/src/ua_types.c:1807
0	0	None	0	28	extensionObjectOrder	call site: 00000	/src/open62541/src/ua_types.c:1618
0	0	None	0	28	extensionObjectOrder	call site: 00000	/src/open62541/src/ua_types.c:1620
0	0	None	0	19	ExtensionObject_copy	call site: 00000	/src/open62541/src/ua_types.c:646
0	0	None	0	18	clearStructure	call site: 00000	/src/open62541/src/ua_types.c:1388
0	0	None	0	16	structureOrder	call site: 00000	/src/open62541/src/ua_types.c:1822

Runtime coverage analysis

Covered functions

125

Functions that are reachable but not covered

8

Reachable functions

32

Percentage of reachable functions covered

75.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_binary_decode.cc	1
/src/open62541/tests/fuzz/custom_memory_manager.c	7
/src/open62541/src/ua_types.c	6
/src/open62541/src/ua_types_encoding_binary.c	7
/src/open62541/src/util/ua_util_internal.h	1
/work/open62541/src_generated/open62541/types_generated_handling.h	3

Fuzzer: fuzz_mdns_xht

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	27	100.%
All colors	27	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	0	None	0	0	xht_free	call site: 00026	/src/open62541/deps/mdnsd/libmdnsd/xht.c:147
0	0	1 : View List ['free']	0	0	_xht_set	call site: 00009	/src/open62541/deps/mdnsd/libmdnsd/xht.c:91

Runtime coverage analysis

Covered functions

14

Functions that are reachable but not covered

4

Reachable functions

18

Percentage of reachable functions covered

77.78%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_xht.cc	1
/src/open62541/deps/mdnsd/libmdnsd/sdtxt.c	5
/src/open62541/deps/mdnsd/libmdnsd/xht.c	8

Fuzzer: fuzz_base64_decode

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	2	100.%
All colors	2	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	0	None	0	0	UA_unbase64	call site: 00001	/src/open62541/deps/base64.c:87

Runtime coverage analysis

Covered functions

2

Functions that are reachable but not covered

0

Reachable functions

2

Percentage of reachable functions covered

100.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_base64_decode.cc	1
/src/open62541/deps/base64.c	1

Fuzzer: fuzz_json_decode_encode

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	12	23.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	40	76.9%
All colors	52	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
62	62	1 : View List ['addMultiArrayContentJSON']	62	141	Variant_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:1103
41	41	2 : View List ['UA_String_clear.5618', 'UA_ExpandedNodeId_print']	41	41	ExpandedNodeId_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:799
36	36	2 : View List ['UA_String_clear.5618', 'UA_NodeId_print']	36	36	NodeId_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:754
8	8	1 : View List ['arrayOrder']	8	8	variantOrder	call site: 00000	/src/open62541/src/ua_types.c:1707
6	100	6 : View List ['writeJsonObjStart', 'writeJsonKey', 'UA_STRING.5635', 'String_encodeJson', 'UA_StatusCode_name', 'writeJsonObjEnd']	6	114	StatusCode_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:930
4	4	1 : View List ['UA_Variant_isScalar']	20	20	variantOrder	call site: 00000	/src/open62541/src/ua_types.c:1685
2	5	2 : View List ['writeChars', 'strlen']	64	502	Variant_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:1082
2	2	1 : View List ['memcmp']	2	2	stringOrder	call site: 00000	/src/open62541/src/ua_types.c:1551
0	63	1 : View List ['DateTime_encodeJson']	0	126	DataValue_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:1161
0	57	1 : View List ['diagnosticInfoOrder']	0	57	diagnosticInfoOrder	call site: 00000	/src/open62541/src/ua_types.c:1805
0	39	1 : View List ['String_encodeJson']	0	116	QualifiedName_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:899
0	39	1 : View List ['String_encodeJson']	0	102	NodeId_encodeJson	call site: 00000	/src/open62541/src/ua_types_encoding_json.c:765

Runtime coverage analysis

Covered functions

183

Functions that are reachable but not covered

3

Reachable functions

24

Percentage of reachable functions covered

87.5%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_json_decode_encode.cc	1
/work/open62541/src_generated/open62541/types_generated_handling.h	5
/src/open62541/src/ua_types_encoding_json.c	4
/src/open62541/deps/cj5.c	7
/src/open62541/src/ua_types.c	2

Fuzzer: fuzz_binary_message

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	2172	25.6%
gold	[1:9]	7	0.08%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	6	0.07%
lawngreen	50+	6271	74.1%
All colors	8456	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1041	3123	7 : View List ['compatibleValue', 'UA_DataValue_init.3611', 'readValueAttribute', 'writeAttribute', 'UA_NodeId_equal.3613', 'setDefaultValue', 'UA_DataValue_clear.3612']	1041	3123	typeCheckVariableNode	call site: 02760	/src/open62541/src/server/ua_services_nodemanagement.c:322
317	444	2 : View List ['isNodeInTree_singleRef', 'readWithReadValue']	317	444	compatibleValueDataType	call site: 01841	/src/open62541/src/server/ua_services_attribute.c:820
311	317	7 : View List ['setBinaryProtocolManagerState', 'UA_SecureChannel_sendError', 'createServerSecureChannel', 'deleteServerSecureChannel', 'UA_StatusCode_name', 'UA_SecureChannel_shutdown', 'UA_SecureChannel_processBuffer']	311	317	serverNetworkCallback	call site: 01120	/src/open62541/src/server/ua_server_binary.c:710
39	55	8 : View List ['UA_Guid_random', 'UA_ByteString_copy.2590', 'UA_BrowseResult_clear.2591', 'UA_BrowseDescription_copy', 'UA_NodePointer_init.2563', 'UA_NodePointer_clear', 'UA_Guid_new', 'ContinuationPoint_clear']	39	55	Operation_Browse	call site: 02607	/src/open62541/src/server/ua_services_view.c:896
31	31	1 : View List ['readValueAttributeFromDataSource']	31	31	readValueAttributeComplete	call site: 01482	/src/open62541/src/server/ua_services_attribute.c:278
30	30	3 : View List ['typeEquivalence', 'UA_Variant_isScalar.2975', 'UA_findDataTypeWithCustom']	30	30	adjustValueType	call site: 01831	/src/open62541/src/server/ua_services_attribute.c:1163
25	25	2 : View List ['UA_LocalizedText_copy.2559', 'UA_Session_getNodeDisplayName']	25	50	addReferenceDescription	call site: 02594	/src/open62541/src/server/ua_services_view.c:575
8	8	3 : View List ['strerror', 'UA_LOG_WARNING.7450', '__errno_location']	8	8	UA_EventLoopPOSIX_start	call site: 00000	/src/open62541/plugins/eventloop/posix/eventloop_posix.c:171
8	8	2 : View List ['strerror', '__errno_location']	8	8	UA_EventLoopPOSIX_pollFDs	call site: 00000	/src/open62541/plugins/eventloop/posix/eventloop_posix_epoll.c:90
7	7	1 : View List ['removeCallback']	7	7	Subscription_setState	call site: 01397	/src/open62541/src/server/ua_subscription.c:783
6	6	1 : View List ['moveTreeToArray']	6	6	UA_NodeReferenceKind_switch	call site: 00083	/src/open62541/src/server/ua_nodes.c:309
0	1803	4 : View List ['addNode', 'UA_Variant_setArray', 'UA_LOCALIZEDTEXT.3559', 'UA_QUALIFIEDNAME.3577']	0	4522	UA_Server_addMethodNodeEx_finish	call site: 06622	/src/open62541/src/server/ua_services_nodemanagement.c:2656

Runtime coverage analysis

Covered functions

1566

Functions that are reachable but not covered

577

Reachable functions

2102

Percentage of reachable functions covered

72.55%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_binary_message.cc	1
/src/open62541/tests/fuzz/custom_memory_manager.c	7
/src/open62541/plugins/include/open62541/server_config_default.h	2
/src/open62541/plugins/ua_config_default.c	7
/src/open62541/plugins/ua_nodestore_hashmap.c	22
/src/open62541/src/server/ua_nodes.c	48
/src/open62541/include/open62541/plugin/nodestore.h	6
/work/open62541/src_generated/open62541/types_generated_handling.h	93
/src/open62541/src/ua_types.c	46
/src/open62541/src/server/ua_server_internal.h	17
/src/open62541/deps/ziptree.c	7
/src/open62541/plugins/eventloop/posix/eventloop_posix.c	17
/work/open62541/src_generated/open62541/config.h	5
/src/open62541/plugins/eventloop/eventloop_timer.c	16
/src/open62541/src/util/ua_clock.c	2
/src/open62541/include/open62541/types.h	16
/src/open62541/plugins/eventloop/posix/eventloop_posix_tcp.c	12
/src/open62541/include/open62541/plugin/log.h	6
/src/open62541/plugins/eventloop/eventloop_common.c	1
/src/open62541/src/util/ua_util.c	11
/src/open62541/deps/mp_printf.c	13
/src/open62541/deps/dtoa.c	10
/src/open62541/plugins/eventloop/posix/eventloop_posix_epoll.c	2
/src/open62541/plugins/eventloop/posix/eventloop_posix.h	3
/src/open62541/plugins/eventloop/posix/eventloop_posix_udp.c	25
/src/open62541/plugins/eventloop/posix/eventloop_posix_eth.c	16
/src/open62541/plugins/eventloop/posix/eventloop_posix_interrupt.c	9
/src/open62541/plugins/crypto/ua_pki_none.c	4
/src/open62541/src/server/ua_server_config.c	1
/src/open62541/plugins/crypto/ua_securitypolicy_none.c	16
/src/open62541/plugins/crypto/mbedtls/securitypolicy_mbedtls_common.c	2
/src/open62541/deps/pcg_basic.c	1
/src/open62541/plugins/ua_accesscontrol_default.c	16
/src/open62541/src/server/ua_server.c	21
/src/open62541/src/util/ua_util_internal.h	7
/src/open62541/src/server/ua_session.c	12
/src/open62541/src/server/ua_services_session.c	4
/work/open62541/src_generated/open62541/statuscodes.c	1
/src/open62541/src/server/ua_subscription.c	17
/src/open62541/src/server/ua_server_async.c	8
/src/open62541/src/server/ua_server_binary.c	27
/src/open62541/src/ua_securechannel_crypto.c	16
/src/open62541/src/ua_securechannel.c	29
/src/open62541/src/ua_types_encoding_binary.c	4
/work/open62541/src_generated/open62541/transport_generated_handling.h	4
/src/open62541/src/server/ua_services_securechannel.c	2
/src/open62541/src/server/ua_services.c	3
/src/open62541/src/server/ua_subscription_datachange.c	6
/src/open62541/src/server/ua_services_attribute.c	43
/src/open62541/src/server/ua_subscription_monitoreditem.c	16
/src/open62541/src/server/ua_services_nodemanagement.c	54
/src/open62541/src/server/ua_server_utils.c	7
/src/open62541/src/server/ua_services_view.c	35
/src/open62541/src/server/ua_services_subscription.c	1
/src/open62541/src/server/ua_services_method.c	9
/src/open62541/src/server/ua_discovery.c	6
/src/open62541/src/server/ua_discovery_mdns.c	27
/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c	40
/src/open62541/deps/mdnsd/libmdnsd/1035.c	20
/src/open62541/deps/mdnsd/libmdnsd/sdtxt.c	5
/src/open62541/deps/mdnsd/libmdnsd/xht.c	9
/src/open62541/src/client/ua_client_connect.c	3
/src/open62541/src/client/ua_client.c	1
/src/open62541/src/server/ua_server_ns0.c	11
/work/open62541/src_generated/open62541/namespace0_generated.c	1117

Fuzzer: fuzz_tcp_message

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1919	22.4%
gold	[1:9]	19	0.22%
yellow	[10:29]	11	0.12%
greenyellow	[30:49]	1	0.01%
lawngreen	50+	6591	77.1%
All colors	8541	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1041	3123	7 : View List ['compatibleValue', 'UA_DataValue_init.3611', 'readValueAttribute', 'writeAttribute', 'UA_NodeId_equal.3613', 'setDefaultValue', 'UA_DataValue_clear.3612']	1041	3123	typeCheckVariableNode	call site: 02759	/src/open62541/src/server/ua_services_nodemanagement.c:322
338	338	1 : View List ['TCP_openActiveConnection']	338	338	TCP_openConnection	call site: 00299	/src/open62541/plugins/eventloop/posix/eventloop_posix_tcp.c:934
317	444	2 : View List ['isNodeInTree_singleRef', 'readWithReadValue']	317	444	compatibleValueDataType	call site: 01841	/src/open62541/src/server/ua_services_attribute.c:820
239	277	6 : View List ['freeaddrinfo', 'UA_QUALIFIEDNAME.6346', 'mdnsd_in', 'UA_KeyValueMap_getScalar', 'message_parse', 'getaddrinfo']	239	277	MulticastDiscoveryCallback	call site: 02222	/src/open62541/src/server/ua_discovery_mdns.c:737
65	65	1 : View List ['RefTree_double']	65	124	RefTree_add	call site: 01603	/src/open62541/src/server/ua_services_view.c:267
39	55	8 : View List ['UA_Guid_random', 'UA_ByteString_copy.2590', 'UA_BrowseResult_clear.2591', 'UA_BrowseDescription_copy', 'UA_NodePointer_init.2563', 'UA_NodePointer_clear', 'UA_Guid_new', 'ContinuationPoint_clear']	39	55	Operation_Browse	call site: 02606	/src/open62541/src/server/ua_services_view.c:896
31	31	1 : View List ['readValueAttributeFromDataSource']	31	31	readValueAttributeComplete	call site: 01482	/src/open62541/src/server/ua_services_attribute.c:278
31	31	2 : View List ['Array_encodeBinaryComplex', 'Array_encodeBinaryOverlayable']	31	31	Array_encodeBinary	call site: 00000	/src/open62541/src/ua_types_encoding_binary.c:455
25	25	2 : View List ['UA_LocalizedText_copy.2559', 'UA_Session_getNodeDisplayName']	29	50	addReferenceDescription	call site: 02593	/src/open62541/src/server/ua_services_view.c:575
25	25	1 : View List ['UA_ExpandedNodeId_order']	25	25	cmpTarget	call site: 01604	/src/open62541/src/server/ua_services_view.c:193
20	20	1 : View List ['mdns_set_address_record_if']	20	20	mdns_set_address_record	call site: 02169	/src/open62541/src/server/ua_discovery_mdns.c:630
19	19	3 : View List ['getSockError', 'UA_LOG_INFO.7588', 'UA_EventLoopPOSIX_modifyFD']	19	89	TCP_connectionSocketCallback	call site: 00000	/src/open62541/plugins/eventloop/posix/eventloop_posix_tcp.c:155

Runtime coverage analysis

Covered functions

1715

Functions that are reachable but not covered

465

Reachable functions

2124

Percentage of reachable functions covered

78.11%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
/src/open62541/tests/fuzz/fuzz_tcp_message.cc	2
/src/open62541/tests/fuzz/custom_memory_manager.c	8
/src/open62541/plugins/include/open62541/server_config_default.h	1
/src/open62541/plugins/ua_config_default.c	7
/src/open62541/plugins/ua_nodestore_hashmap.c	22
/src/open62541/src/server/ua_nodes.c	48
/src/open62541/include/open62541/plugin/nodestore.h	6
/work/open62541/src_generated/open62541/types_generated_handling.h	94
/src/open62541/src/ua_types.c	49
/src/open62541/src/server/ua_server_internal.h	17
/src/open62541/deps/ziptree.c	7
/src/open62541/plugins/eventloop/posix/eventloop_posix.c	17
/work/open62541/src_generated/open62541/config.h	5
/src/open62541/plugins/eventloop/eventloop_timer.c	16
/src/open62541/src/util/ua_clock.c	2
/src/open62541/include/open62541/types.h	16
/src/open62541/plugins/eventloop/posix/eventloop_posix_tcp.c	12
/src/open62541/include/open62541/plugin/log.h	6
/src/open62541/plugins/eventloop/eventloop_common.c	1
/src/open62541/src/util/ua_util.c	11
/src/open62541/deps/mp_printf.c	13
/src/open62541/deps/dtoa.c	10
/src/open62541/plugins/eventloop/posix/eventloop_posix_epoll.c	2
/src/open62541/plugins/eventloop/posix/eventloop_posix.h	3
/src/open62541/plugins/eventloop/posix/eventloop_posix_udp.c	25
/src/open62541/plugins/eventloop/posix/eventloop_posix_eth.c	16
/src/open62541/plugins/eventloop/posix/eventloop_posix_interrupt.c	9
/src/open62541/plugins/crypto/ua_pki_none.c	4
/src/open62541/src/server/ua_server_config.c	1
/src/open62541/plugins/crypto/ua_securitypolicy_none.c	16
/src/open62541/plugins/crypto/mbedtls/securitypolicy_mbedtls_common.c	2
/src/open62541/deps/pcg_basic.c	1
/src/open62541/plugins/ua_accesscontrol_default.c	16
/src/open62541/src/server/ua_server.c	25
/src/open62541/src/util/ua_util_internal.h	7
/src/open62541/src/server/ua_session.c	12
/src/open62541/src/server/ua_services_session.c	4
/work/open62541/src_generated/open62541/statuscodes.c	1
/src/open62541/src/server/ua_subscription.c	17
/src/open62541/src/server/ua_server_async.c	13
/src/open62541/src/server/ua_server_binary.c	27
/src/open62541/src/ua_securechannel_crypto.c	16
/src/open62541/src/ua_securechannel.c	29
/src/open62541/src/ua_types_encoding_binary.c	4
/work/open62541/src_generated/open62541/transport_generated_handling.h	4
/src/open62541/src/server/ua_services_securechannel.c	2
/src/open62541/src/server/ua_services.c	3
/src/open62541/src/server/ua_subscription_datachange.c	6
/src/open62541/src/server/ua_services_attribute.c	43
/src/open62541/src/server/ua_subscription_monitoreditem.c	16
/src/open62541/src/server/ua_services_nodemanagement.c	54
/src/open62541/src/server/ua_server_utils.c	7
/src/open62541/src/server/ua_services_view.c	35
/src/open62541/src/server/ua_services_subscription.c	1
/src/open62541/src/server/ua_services_method.c	9
/src/open62541/src/server/ua_discovery.c	6
/src/open62541/src/server/ua_discovery_mdns.c	27
/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c	40
/src/open62541/deps/mdnsd/libmdnsd/1035.c	20
/src/open62541/deps/mdnsd/libmdnsd/sdtxt.c	5
/src/open62541/deps/mdnsd/libmdnsd/xht.c	9
/src/open62541/src/client/ua_client_connect.c	3
/src/open62541/src/client/ua_client.c	1
/src/open62541/src/server/ua_server_ns0.c	11
/work/open62541/src_generated/open62541/namespace0_generated.c	1117
/src/open62541/deps/itoa.c	3
/src/open62541/deps/base64.c	1

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
UA_ServerConfig_setDefaultWithSecureSecurityPolicies	/src/open62541/plugins/ua_config_default.c	10	['struct.UA_ServerConfig.5022 *', 'short', 'struct.UA_String *', 'struct.UA_String *', 'struct.UA_String *', 'size_t', 'struct.UA_String *', 'size_t', 'struct.UA_String *', 'size_t']	15	0	156	17	8	513	0	2231	678
UA_Server_deregisterDiscovery	/src/open62541/src/server/ua_discovery.c	4	['struct.UA_Server *', 'struct.UA_ClientConfig *', 'size_t', 'char *']	30	0	52	3	2	248	0	1182	620
UA_HistoryDataGathering_Circular	/src/open62541/plugins/historydata/ua_history_data_gathering_default.c	2	['struct.UA_HistoryDataGathering *', 'size_t']	20	0	19	3	2	208	0	1073	251
DataValue_encodeJson	/src/open62541/src/ua_types_encoding_json.c	3	['struct.CtxJson *', 'struct.UA_DataValue *', 'struct.UA_DataType *']	9	0	232	21	8	50	0	271	195
UA_HistoryDataBackend_Memory_Circular	/src/open62541/plugins/historydata/ua_history_data_backend_memory.c	3	['struct.UA_HistoryDataBackend *', 'size_t', 'size_t']	9	0	25	3	2	53	0	292	190
lteOperator	/src/open62541/src/server/ua_subscription_events_filter.c	2	['struct.UA_FilterEvalContext *', 'size_t']	17	0	20	3	2	149	0	890	189
ExpandedNodeId_decodeJson	/src/open62541/src/ua_types_encoding_json.c	3	['struct.ParseCtx *', 'struct.UA_ExpandedNodeId *', 'struct.UA_DataType *']	6	0	183	14	5	34	0	211	147

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

2444 / 3290

Cyclomatic complexity statically reachable by fuzzers

9708 / 13844

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_message.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['_a_match', '_r_next', '_cache', '_q_next', 'mdnsd_in']

/src/open62541/tests/fuzz/fuzz_src_ua_util.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['UA_memoryManager_setLimitFromLast4Bytes']

/src/open62541/tests/fuzz/fuzz_base64_encode.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

/src/open62541/tests/fuzz/fuzz_json_decode.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['LLVMFuzzerTestOneInput']

/src/open62541/tests/fuzz/fuzz_binary_decode.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['UA_memoryManager_setLimitFromLast4Bytes', 'UA_encodeBinaryInternal', 'LLVMFuzzerTestOneInput', 'UA_encodeBinary', 'removeFromMap', 'UA_ByteString_allocBuffer']

/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_xht.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

/src/open62541/tests/fuzz/fuzz_base64_decode.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

/src/open62541/tests/fuzz/fuzz_json_decode_encode.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['LLVMFuzzerTestOneInput', 'UA_ByteString_allocBuffer']

/src/open62541/tests/fuzz/fuzz_binary_message.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['UA_DiscoveryManager_new', 'UA_Session_detachFromSecureChannel', 'UA_ConnectionManager_new_POSIX_UDP', 'readValueAttributeComplete', 'UA_Subscription_delete', 'UA_ConnectionManager_new_POSIX_Ethernet', 'format_string_loop', 'UA_Variant_setScalar', 'compatibleValueRankValue', 'UA_BinaryProtocolManager_new']

/src/open62541/tests/fuzz/fuzz_tcp_message.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['processHEL', 'readValueAttributeComplete', 'UA_Subscription_delete', 'UA_DiscoveryManager_start', 'MulticastDiscoveryCallback', 'UA_BinaryProtocolManager_stop', 'UA_readNumberWithBase', 'UA_ConnectionManager_new_POSIX_Ethernet', 'ReadWithNode', 'writeValueAttributeWithoutRange']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
mdnsd_in	66	23	34.84%	['fuzz_mdns_message', 'fuzz_binary_message', 'fuzz_tcp_message']
clearStructure	35	19	54.28%	[]
structureOrder	51	28	54.90%	[]
UA_encodeJson	37	19	51.35%	['fuzz_json_decode_encode']
NodeId_encodeJson	33	14	42.42%	[]
ExpandedNodeId_encodeJson	48	21	43.75%	[]
format_string_loop	208	97	46.63%	['fuzz_binary_message', 'fuzz_tcp_message']
print_integer_finalization	51	18	35.29%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_KeyValueRestriction_validate	35	15	42.85%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_DiscoveryManager_free	36	17	47.22%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_NodePointer_copy	42	11	26.19%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_Node_copy	117	64	54.70%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_Node_insertOrUpdateLocale	37	18	48.64%	['fuzz_binary_message', 'fuzz_tcp_message']
getAllInterfaceChildNodeIds	91	41	45.05%	['fuzz_binary_message', 'fuzz_tcp_message']
ReadWithNode	217	42	19.35%	['fuzz_binary_message', 'fuzz_tcp_message']
compatibleValue	37	11	29.72%	['fuzz_binary_message', 'fuzz_tcp_message']
readValueAttributeComplete	53	19	35.84%	['fuzz_binary_message', 'fuzz_tcp_message']
unwrapEOArray	31	4	12.90%	['fuzz_binary_message', 'fuzz_tcp_message']
copyAttributeIntoNode	163	50	30.67%	['fuzz_binary_message', 'fuzz_tcp_message']
writeNodeValueAttribute	97	39	40.20%	['fuzz_binary_message', 'fuzz_tcp_message']
addNode_addRefs	156	85	54.48%	['fuzz_binary_message', 'fuzz_tcp_message']
useVariableTypeAttributes	48	21	43.75%	['fuzz_binary_message', 'fuzz_tcp_message']
typeCheckVariableNode	82	9	10.97%	['fuzz_binary_message', 'fuzz_tcp_message']
recursiveCallConstructors	95	41	43.15%	['fuzz_binary_message', 'fuzz_tcp_message']
Operation_deleteReference	31	10	32.25%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_Server_addMethodNodeEx_finish	89	43	48.31%	['fuzz_binary_message', 'fuzz_tcp_message']
Operation_Browse	94	43	45.74%	['fuzz_binary_message', 'fuzz_tcp_message']
browseWithNode	66	27	40.90%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_Subscription_delete	43	22	51.16%	['fuzz_binary_message', 'fuzz_tcp_message']
TCP_registerListenSocket	137	64	46.71%	['fuzz_binary_message', 'fuzz_tcp_message']
UDP_registerListenSocket	93	48	51.61%	['fuzz_binary_message', 'fuzz_tcp_message']
setupMulticastRequest	46	17	36.95%	['fuzz_binary_message', 'fuzz_tcp_message']
mdns_create_txt	60	24	40.0%	['fuzz_binary_message', 'fuzz_tcp_message']
MulticastDiscoveryCallback	44	12	27.27%	['fuzz_binary_message', 'fuzz_tcp_message']
checkTimeouts	31	14	45.16%	['fuzz_tcp_message']
deleteServerSecureChannel	34	13	38.23%	['fuzz_binary_message', 'fuzz_tcp_message']
processSecureChannelMessage	57	12	21.05%	['fuzz_binary_message', 'fuzz_tcp_message']
assembleProcessMessage	46	11	23.91%	['fuzz_binary_message', 'fuzz_tcp_message']
UA_Array_resize	37	17	45.94%	['fuzz_binary_message', 'fuzz_tcp_message']

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
	[]	[]
/src/open62541/src/server/ua_subscription_datachange.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/include/open62541/client_subscriptions.h	[]	[]
/src/open62541/plugins/ua_config_json.c	[]	[]
/src/open62541/deps/mp_printf.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/parse_num.c	[]	[]
/work/open62541/src_generated/open62541/types_generated_handling.h	['fuzz_json_decode', 'fuzz_binary_decode', 'fuzz_json_decode_encode', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_json_decode', 'fuzz_binary_decode', 'fuzz_json_decode_encode', 'fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/util/ua_util_internal.h	['fuzz_binary_decode', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_decode', 'fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/util/ua_types_lex.c	[]	[]
/src/open62541/include/open62541/server.h	[]	[]
/work/open62541/src_generated/open62541/config.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_server_ns0.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/include/open62541/plugin/nodestore.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/eventloop_common.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_services_view.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/mdnsd/libmdnsd/sdtxt.c	['fuzz_mdns_xht', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_mdns_xht', 'fuzz_tcp_message']
/src/open62541/plugins/crypto/ua_pki_none.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/tests/fuzz/fuzz_base64_decode.cc	['fuzz_base64_decode']	['fuzz_base64_decode']
/src/open62541/src/client/ua_client_connect.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/plugins/include/open62541/server_config_default.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix_tcp.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix_epoll.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_server.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/util/ua_clock.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_services_session.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/src/ua_types_encoding_json.h	[]	[]
/src/open62541/plugins/historydata/ua_history_data_gathering_default.c	[]	[]
/src/open62541/plugins/crypto/ua_securitypolicy_none.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/ua_types.c	['fuzz_json_decode', 'fuzz_binary_decode', 'fuzz_json_decode_encode', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_json_decode', 'fuzz_binary_decode', 'fuzz_json_decode_encode', 'fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_subscription_events.c	[]	[]
/src/open62541/src/server/ua_services_method.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/src/server/ua_subscription_monitoreditem.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/src/server/ua_server_async.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_services_attribute.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/ua_securitypolicy_basic128rsa15.c	[]	[]
/src/open62541/plugins/crypto/mbedtls/ua_securitypolicy_basic256sha256.c	[]	[]
/src/open62541/plugins/ua_nodestore_hashmap.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/ua_config_default.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/libc_time.c	[]	[]
/src/open62541/src/server/ua_discovery.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/eventloop_timer.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/ua_securitypolicy_aes256sha256rsapss.c	[]	[]
/src/open62541/deps/ziptree.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/dtoa.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/include/open62541/types.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/tests/testing-plugins/testing_networklayers.c	[]	[]
/src/open62541/src/server/ua_services_monitoreditem.c	[]	[]
/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_xht.cc	['fuzz_mdns_xht']	['fuzz_mdns_xht']
/src/open62541/src/client/ua_client_highlevel.c	[]	[]
/src/open62541/src/server/ua_discovery_mdns.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/securitypolicy_mbedtls_common.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/historydata/ua_history_database_default.c	[]	[]
/src/open62541/src/ua_types_encoding_json.c	['fuzz_json_decode', 'fuzz_json_decode_encode']	['fuzz_json_decode', 'fuzz_json_decode_encode']
/src/open62541/src/server/ua_nodes.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/pcg_basic.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/client/ua_client_discovery.c	[]	[]
/src/open62541/src/server/ua_services_nodemanagement.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_services_securechannel.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/plugins/eventloop/posix/eventloop_posix.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix_udp.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_server_ns0_diagnostics.c	[]	[]
/src/open62541/plugins/ua_nodestore_ziptree.c	[]	[]
/src/open62541/src/util/ua_util.c	['fuzz_src_ua_util', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_src_ua_util', 'fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/cj5.c	['fuzz_json_decode', 'fuzz_json_decode_encode']	['fuzz_json_decode', 'fuzz_json_decode_encode']
/src/open62541/deps/base64.c	['fuzz_base64_encode', 'fuzz_base64_decode', 'fuzz_tcp_message']	['fuzz_base64_encode', 'fuzz_base64_decode']
/src/open62541/tests/fuzz/fuzz_tcp_message.cc	['fuzz_tcp_message']	['fuzz_tcp_message']
/src/open62541/plugins/ua_log_stdout.c	[]	[]
/src/open62541/src/server/ua_server_internal.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_server_utils.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/ua_pki_mbedtls.c	[]	[]
/src/open62541/src/ua_securechannel.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/ua_mbedtls_create_certificate.c	[]	[]
/src/open62541/tests/fuzz/custom_memory_manager.c	['fuzz_src_ua_util', 'fuzz_binary_decode', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_src_ua_util', 'fuzz_binary_decode', 'fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/ua_log_syslog.c	[]	[]
/src/open62541/tests/fuzz/fuzz_src_ua_util.cc	['fuzz_src_ua_util']	['fuzz_src_ua_util']
/src/open62541/plugins/ua_accesscontrol_default.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_services_subscription.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/src/ua_securechannel_crypto.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/deps/mdnsd/libmdnsd/1035.c	['fuzz_mdns_message', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_mdns_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/server/ua_subscription_events_filter.c	[]	[]
/src/open62541/include/open62541/client.h	[]	[]
/work/open62541/src_generated/open62541/namespace0_generated.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/ua_types_encoding_binary.c	['fuzz_binary_decode', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_decode', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix_interrupt.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/historydata/ua_history_data_backend_memory.c	[]	[]
/src/open62541/src/server/ua_services.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/src/server/ua_server_binary.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/tests/fuzz/fuzz_binary_decode.cc	['fuzz_binary_decode']	['fuzz_binary_decode']
/src/open62541/deps/mdnsd/libmdnsd/xht.c	['fuzz_mdns_xht', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_mdns_xht', 'fuzz_tcp_message']
/src/open62541/tests/fuzz/fuzz_json_decode.cc	['fuzz_json_decode']	['fuzz_json_decode']
/src/open62541/src/server/ua_server_config.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/include/open62541/plugin/log.h	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/usr/include/mbedtls/pk.h	[]	[]
/src/open62541/tests/fuzz/fuzz_base64_encode.cc	['fuzz_base64_encode']	['fuzz_base64_encode']
/src/open62541/plugins/crypto/mbedtls/ua_securitypolicy_basic256.c	[]	[]
/src/open62541/tests/fuzz/fuzz_json_decode_encode.cc	['fuzz_json_decode_encode']	['fuzz_json_decode_encode']
/src/open62541/src/server/ua_session.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/plugins/crypto/mbedtls/ua_securitypolicy_aes128sha256rsaoaep.c	[]	[]
/src/open62541/src/server/ua_services_discovery.c	[]	[]
/src/open62541/deps/mdnsd/tests/fuzz/fuzz_mdns_message.cc	['fuzz_mdns_message']	['fuzz_mdns_message']
/src/open62541/src/client/ua_client_subscriptions.c	[]	[]
/src/open62541/src/server/ua_subscription.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/work/open62541/src_generated/open62541/transport_generated_handling.h	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/deps/itoa.c	['fuzz_tcp_message']	[]
/work/open62541/src_generated/open62541/statuscodes.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/deps/mdnsd/libmdnsd/mdnsd.c	['fuzz_mdns_message', 'fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_mdns_message', 'fuzz_tcp_message']
/src/open62541/plugins/eventloop/posix/eventloop_posix_eth.c	['fuzz_binary_message', 'fuzz_tcp_message']	['fuzz_binary_message', 'fuzz_tcp_message']
/src/open62541/src/client/ua_client.c	['fuzz_binary_message', 'fuzz_tcp_message']	[]
/src/open62541/tests/fuzz/fuzz_binary_message.cc	['fuzz_binary_message']	['fuzz_binary_message']

Directories in report

Directory
/src/open62541/plugins/crypto/
/src/open62541/include/open62541/
/src/open62541/plugins/eventloop/
/src/open62541/tests/fuzz/
/src/open62541/tests/testing-plugins/
/usr/include/mbedtls/
/src/open62541/src/client/
/src/open62541/src/server/
/src/open62541/plugins/include/open62541/
/src/open62541/include/open62541/plugin/
/src/open62541/deps/mdnsd/libmdnsd/
/src/open62541/src/
/src/open62541/plugins/eventloop/posix/
/src/open62541/deps/
/src/open62541/src/util/
/src/open62541/deps/mdnsd/tests/fuzz/
/src/open62541/plugins/
/work/open62541/src_generated/open62541/
/src/open62541/plugins/crypto/mbedtls/
/src/open62541/plugins/historydata/