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kdudkakdudka
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cstrans-df-run: restrict the regex accepting exec form
... of the RUN instruction. This change causes the following RUN instruction to be recognized as the shell form: ``` RUN [ "$(sha1sum Dockerfile.cached | cut -d' ' -f1)" = "$(sha1sum Dockerfile | cut -d' ' -f1)" ] ``` Fixes: https://issues.redhat.com/browse/PSSECAUT-1207
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5 files changed

Lines changed: 118 additions & 2 deletions

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‎src/cstrans-df-run.cc‎

Lines changed: 6 additions & 2 deletions
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@@ -80,8 +80,12 @@ class DockerFileTransformer {
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// split RUN directive with options from the actual command
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const RE reLineRunOpts_ = RE("^(RUN +(?:--[A-Za-z0-9_]+=[^ ]+ +)*)(.*)$");
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/// match ... in RUN [...]
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const RE reLineRunExec_ = RE("^\\[(.*)\\] *$");
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/// text to construct RE taking "..." where inner quotes can be escaped
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const std::string rtQuotedStr_ = "\"([^\"\\\\]|\\\\.)*\"";
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/// match RUN ["cmd", "opt1", "opt2", ...] with zero or more opts
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const RE reLineRunExec_ = RE("^\\[\\s*(" + rtQuotedStr_
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+ "(?:\\s*,\\s*" + rtQuotedStr_ + ")*)\\s*\\]\\s*$");
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/// match in-line comments
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const RE reComment_ = RE("^\\s*#.*$");

‎tests/cstrans-df-run/0012-sf-stdout.txt‎

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# Detect the drift from the upstream Dockerfile
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FROM registry.access.redhat.com/ubi9/ubi-minimal:latest AS drift
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WORKDIR /app
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COPY drift-cache/Dockerfile Dockerfile.cached
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COPY Dockerfile.openshift Dockerfile
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# If the command below fails it means that the Dockerfile from this repository changed.
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# You have to update the Konflux Containerfile accordingly.
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# drift-cache/Dockerfile can be updated with the upstream contents once the Konflux version is aligned.
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RUN '/opt/cov-sa-2019.09/bin/cov-build' '--dir=/cov' '--append-log' 'sh' '-c' $'[ \"$(sha1sum Dockerfile.cached | cut -d\' \' -f1)\" = \"$(sha1sum Dockerfile | cut -d\' \' -f1)\" ]'
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FROM registry.access.redhat.com/ubi9/go-toolset:1.22 as builder
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# dummy copy to trigger the drift detection
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COPY --from=drift /app/Dockerfile.cached .
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WORKDIR /workspace
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# Dummy RUN to create /workspace directory.
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# WORKDIR doesn't create the directory (at least for Podman).
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# Without this step, the following COPY may create /workspace
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# as root-owned (instead of go-toolset's default 1001)
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# leading to "Permission denied" errors during "make build"
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# when trying to write output.
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RUN '/opt/cov-sa-2019.09/bin/cov-build' '--dir=/cov' '--append-log' 'sh' '-c' 'ls .'
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COPY . /workspace
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RUN '/opt/cov-sa-2019.09/bin/cov-build' '--dir=/cov' '--append-log' 'sh' '-c' 'git config --global --add safe.directory /workspace'
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# Build
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RUN '/opt/cov-sa-2019.09/bin/cov-build' '--dir=/cov' '--append-log' 'sh' '-c' 'make build'
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FROM registry.redhat.io/rhel9-4-els/rhel:9.4-943.1729773477
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LABEL maintainer="Red Hat, Inc."
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LABEL com.redhat.component="external-dns-container"
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LABEL name="external-dns"
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LABEL version="1.3.0"
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LABEL commit="76d92ad82b22c92c191a8c0145d3712e4012d987"
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WORKDIR /
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COPY --from=builder /workspace/build/external-dns /
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COPY LICENSE /licenses/
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USER 65532:65532
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ENTRYPOINT ["/external-dns"]

‎tests/cstrans-df-run/0012-stdin.txt‎

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# Detect the drift from the upstream Dockerfile
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FROM registry.access.redhat.com/ubi9/ubi-minimal:latest AS drift
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WORKDIR /app
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COPY drift-cache/Dockerfile Dockerfile.cached
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COPY Dockerfile.openshift Dockerfile
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# If the command below fails it means that the Dockerfile from this repository changed.
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# You have to update the Konflux Containerfile accordingly.
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# drift-cache/Dockerfile can be updated with the upstream contents once the Konflux version is aligned.
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RUN [ "$(sha1sum Dockerfile.cached | cut -d' ' -f1)" = "$(sha1sum Dockerfile | cut -d' ' -f1)" ]
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FROM registry.access.redhat.com/ubi9/go-toolset:1.22 as builder
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# dummy copy to trigger the drift detection
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COPY --from=drift /app/Dockerfile.cached .
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WORKDIR /workspace
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# Dummy RUN to create /workspace directory.
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# WORKDIR doesn't create the directory (at least for Podman).
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# Without this step, the following COPY may create /workspace
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# as root-owned (instead of go-toolset's default 1001)
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# leading to "Permission denied" errors during "make build"
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# when trying to write output.
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RUN ls .
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COPY . /workspace
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RUN git config --global --add safe.directory /workspace
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# Build
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RUN make build
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FROM registry.redhat.io/rhel9-4-els/rhel:9.4-943.1729773477
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LABEL maintainer="Red Hat, Inc."
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LABEL com.redhat.component="external-dns-container"
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LABEL name="external-dns"
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LABEL version="1.3.0"
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LABEL commit="76d92ad82b22c92c191a8c0145d3712e4012d987"
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WORKDIR /
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COPY --from=builder /workspace/build/external-dns /
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COPY LICENSE /licenses/
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USER 65532:65532
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ENTRYPOINT ["/external-dns"]

‎tests/cstrans-df-run/0012-stdout.txt‎

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# Detect the drift from the upstream Dockerfile
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FROM registry.access.redhat.com/ubi9/ubi-minimal:latest AS drift
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WORKDIR /app
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COPY drift-cache/Dockerfile Dockerfile.cached
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COPY Dockerfile.openshift Dockerfile
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# If the command below fails it means that the Dockerfile from this repository changed.
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# You have to update the Konflux Containerfile accordingly.
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# drift-cache/Dockerfile can be updated with the upstream contents once the Konflux version is aligned.
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RUN ["/opt/cov-sa-2019.09/bin/cov-build", "--dir=/cov", "--append-log", "sh", "-c", "[ \"$(sha1sum Dockerfile.cached | cut -d' ' -f1)\" = \"$(sha1sum Dockerfile | cut -d' ' -f1)\" ]"]
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FROM registry.access.redhat.com/ubi9/go-toolset:1.22 as builder
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# dummy copy to trigger the drift detection
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COPY --from=drift /app/Dockerfile.cached .
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WORKDIR /workspace
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# Dummy RUN to create /workspace directory.
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# WORKDIR doesn't create the directory (at least for Podman).
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# Without this step, the following COPY may create /workspace
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# as root-owned (instead of go-toolset's default 1001)
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# leading to "Permission denied" errors during "make build"
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# when trying to write output.
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RUN ["/opt/cov-sa-2019.09/bin/cov-build", "--dir=/cov", "--append-log", "sh", "-c", "ls ."]
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COPY . /workspace
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RUN ["/opt/cov-sa-2019.09/bin/cov-build", "--dir=/cov", "--append-log", "sh", "-c", "git config --global --add safe.directory /workspace"]
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# Build
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RUN ["/opt/cov-sa-2019.09/bin/cov-build", "--dir=/cov", "--append-log", "sh", "-c", "make build"]
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FROM registry.redhat.io/rhel9-4-els/rhel:9.4-943.1729773477
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LABEL maintainer="Red Hat, Inc."
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LABEL com.redhat.component="external-dns-container"
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LABEL name="external-dns"
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LABEL version="1.3.0"
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LABEL commit="76d92ad82b22c92c191a8c0145d3712e4012d987"
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WORKDIR /
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COPY --from=builder /workspace/build/external-dns /
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COPY LICENSE /licenses/
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USER 65532:65532
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ENTRYPOINT ["/external-dns"]

‎tests/cstrans-df-run/CMakeLists.txt‎

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@@ -45,3 +45,4 @@ test_cstrans_df_run(0008)
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test_cstrans_df_run(0009)
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test_cstrans_df_run(0010)
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test_cstrans_df_run(0011)
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test_cstrans_df_run(0012)

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