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Add support for Nuget lockfiles #497

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Add support for Nuget lockfiles #497

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@Porges Porges commented Apr 6, 2023

These have been supported since VS2017 but they are not yet parsed. The lockfile contains all transitive dependencies and does not require a build to be performed in order to be used.

I found that support for this was missing while investigating why our repo was not getting flagged for anything despite having transitive dependencies on packages with High- and Critical-level advisories. It turned out that Component Governance was not finding any dependencies at all, since the existing detectors require the project to be built first.

I've also added a simple test logger implementation when writing a test, since a mock logger is not very useful when tests fail.

foreach (var (name, value) in framework)
{
var component = new NuGetComponent(name, value.Resolved);
singleFileComponentRecorder.RegisterUsage(new DetectedComponent(component));
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Not sure if the team would want it included in this PR or not, but packages.lock.json supports reconstructing the whole component graph (see parentComponentId docs link) by using the dependencies property and also isExplicitlyReferencedDependency (same doc link) through the type property (is it Direct or Transitive).

@Porges Porges marked this pull request as ready for review April 10, 2023 22:03
@Porges Porges requested a review from a team as a code owner April 10, 2023 22:03
@Porges Porges requested a review from Omotola April 10, 2023 22:03
@@ -105,6 +115,12 @@ private async Task ProcessFileAsync(ProcessRequest processRequest)
else if ("paket.lock".Equals(stream.Pattern, StringComparison.OrdinalIgnoreCase))
{
this.ParsePaketLock(processRequest);
return;
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@Porges Porges Apr 10, 2023

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Fixed what seems like a small bug here; it would always continue to the "nuget bytes" parsing and throw a null reference exception which is then caught.

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detector:nuget The NuGet detector type:feature Feature (new functionality) version:minor
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3 participants