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43 lines
1.1 KiB
Plaintext
43 lines
1.1 KiB
Plaintext
/**
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* @kind path-problem
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*/
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import semmle.code.cpp.dataflow.DataFlow
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import DataFlow::PathGraph
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import DataFlow
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import cpp
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class Conf extends Configuration {
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Conf() { this = "FieldFlowConf" }
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override predicate isSource(Node src) {
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src.asExpr() instanceof NewExpr
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or
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src.asExpr().(Call).getTarget().hasName("user_input")
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or
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exists(FunctionCall fc |
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fc.getAnArgument() = src.asDefiningArgument() and
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fc.getTarget().hasName("argument_source")
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)
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}
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override predicate isSink(Node sink) {
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exists(Call c |
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c.getTarget().hasName("sink") and
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c.getAnArgument() = sink.asExpr()
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)
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}
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override predicate isAdditionalFlowStep(Node a, Node b) {
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b.asPartialDefinition() =
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any(Call c | c.getTarget().hasName("insert") and c.getAnArgument() = a.asExpr())
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.getQualifier()
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or
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b.asExpr().(AddressOfExpr).getOperand() = a.asExpr()
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}
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}
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from DataFlow::PathNode src, DataFlow::PathNode sink, Conf conf
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where conf.hasFlowPath(src, sink)
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select sink, src, sink, sink + " flows from $@", src, src.toString()
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