A robust parser for a C/C++ code base that generates a large property graph stored in a Neo4J graph DB. This allows the code to be mined using complex queries formulated in the graph traversal languages Gremlin and Cypher.
Questions tagged [joern]
9 questions
1
vote
1 answer
Run scala script based on joern, function parameter error！
I want to analyze the if-else structure of the demo.c file through joern and try to write a script with scala, but I found that the running results of scala1 and scala2 are different (the scala1 and scala2 want to express the same meaning). The…
kiki Shao
- 19
- 3
1
vote
0 answers
"graph-for-funcs.sc" script compilation error
I am trying to reproduce the devign experiment. When joern is updated, some error messages appear in the graph-for-funcs.sc script that parses the bin file into JSON. I modified some, and there are still some errors as shown in the figure below. Did…
Shanshan Chen
- 11
- 4
0
votes
0 answers
Error while exporting graphs from source code using joern
I'm using joern with the command line functions, the following is my python script:
parse_command = f"{joern_path}joern-parse {java_file} --output {output_path}/{file} "
subprocess.call(parse_command, shell=True)
export_command =…
Fares Ars
- 7
- 2
0
votes
0 answers
How to use joern to analysis memory leak？
How to query cpg of this code to find the location of un-free memory ?
int bad(void) {
OutsideType my;
my.p = MyAlloc();
my.p = MyAlloc();
MyFree(my.p);
return 0;
}
Try using joern to find the place where the free function…
xmiaowa
- 1
0
votes
1 answer
How do I convert .bin code property graph to json?
How can I convert a code property graph(cpg) obtained from joern (https://joern.io/) from .bin format to .json format for feeding it to a graph machine learning library for classification.
Note: CPG = AST + Control Flow Graph + Program Dependency…
Junk Gear
- 21
- 3
0
votes
0 answers
Scala: Object XXX is not a member of package XXX
Environment:
java -version
openjdk version "11.0.7" 2020-04-14
OpenJDK Runtime Environment (build 11.0.7+10-post-Ubuntu-3ubuntu1)
OpenJDK 64-Bit Server VM (build 11.0.7+10-post-Ubuntu-3ubuntu1, mixed mode, sharing)
When I was using Joern (a scala…
Jaylen
- 1
0
votes
1 answer
Issue running Joern
Spent the last few days meticulously attempting to get Joern to function properly to no avail. I've even used the docker image provided by mckeimic/joern/ with no resolution.
Ubuntu 16.04
py2neo==2.0
neo4j (attempted versions 2.1.5 and…
Shawn
- 353
- 1
- 14
0
votes
1 answer
Access neo4j via python-joern
When using Joern, I accessed the Neo4j database via python-joern with the following code.
from joern.all import JoernSteps
j = JoernSteps()
j.setGraphDbURL('http://localhost:7474/db/data/')
j.connectToDatabase()
res = …
Binbin.Liu
- 3
- 2
0
votes
1 answer
gremlin module not found
I followed the instructions at:
http://joern.readthedocs.io/en/latest/installation.html
to install joern, and then the following to test Joern:
http://joern.readthedocs.io/en/latest/access.html
And got this error (using ipython):
import joern.all…
Peter Teoh
- 6,337
- 4
- 42
- 58