Writing is nature's way of telling us how lousy our thinking is.
An Augmentation is an operation by which a Code Property Graph is extended with nodes, properties and edges.
CPGQL Augmentation Directives are Directives which extend a Code Property Graph with nodes, properties and edges.
Location in a Program Structure where a function or subroutine is called.
Data structure designed for vulnerability discovery. A directed, edge-labeled, attributed multigraph, or property graph for short.
A set of Nodes, Node Properties and Edges grouped together based on certain criteria. For example, the Dataflow Overlay is the set of Nodes, Node Properties and Edges that are grouped together to represent Dataflows in a Code Property Graph.
A domain-specific language designed for querying Code Property Graphs.
CPGQL Complex Steps are Step which combine the functionality of one or more Node-Type Steps, Repeat Steps, Filter Steps, Core Steps or Execution Directives. They are represented by one or more Directives.
CPGQL Core Steps are Steps which can be combined with any other Step. They are represented by one or more Directives.
A dataflow represents paths information can take from an external input of a program to an internal procedure.
The information consumer in a Dataflow, i.e. an internal procedure of a program.
The information generator in a Dataflow, i.e. the input of a program.
An atomic traversal on Nodes and Edges that are part of the Dataflow Overlay.
The set of Nodes, Node Properties and Edges that represent Dataflows in a Code Property Graph.
External program code that is used in another program.
CPGQL Directives are keywords of the Code Property Graph Query Language.
A CPGQL Entry Directive is a Directive which references the entry node of a Code Property Graph.
CPGQL Execution Directives are Directives which execute the traversals they suffix and return the result in a specific format.
CPGQL Filter Steps are Steps which filter nodes in a traversal according to a criterion. They are represented by one or more Directives.
The CPGQL Help Directive is a Directive which returns textual descriptions of other directives.
Joern component that generates Code Property Graphs from a program's source.
A Code Property Graph is a graph, that is, all objects are represented as nodes and their relationships are represented by edges. Objects represented by nodes are, e.g., files, methods, expressions, and even dataflows.
A key-value pair attached to a Node.
A label that defines the set of mandatory and optional Node Properties and Edges for a specific Node.
CPGQL Node-Type Steps are Steps that traverse nodes based on their type. They are represented by a single Directive.
A CPGQL Query is a combination of more than two Directives.
Source representation of a program. Can be a directory with multiple source files, a jar file containing Java Bytecode, an LLVM IR binary or anything similar.
The overall form of a computer program which represents its control flow and data structures.
CPGQL Repeat Steps are Steps which repeat another traversal multiple times. They are represented by one or more Directives.
A file containing instructions for Joern to execute.
The set of Nodes, Node Properties and Edges that represent Program Structure in a Code Property Graph.
CPGQL Steps are combinations of one or more Directives that describe graph traversals in the Code Property Graph Query Language. They are represented by one or more Directives.
The set of Nodes, Node Properties and Edges of a Code Property Graph that make up for a higher-level abstract representation of Program Structure.
A Transformation is an operation by which a Code Property Graph is generated from Program Code.
A recipe which, given a set of start nodes, describes a walk in the graph to reach a set of end nodes.