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qemu/scripts/coverity-scan/run-coverity-scan
Paolo Bonzini 2f3e5e4c08 run-coverity-scan: add --check-upload-only option 
Add an option to check if upload is permitted without actually
attempting a build.  This can be useful to add a third outcome
beyond success and failure---namely, a CI job can self-cancel
if the uploading quota has been reached.

There is a small change here in that a failure to do the upload
check changes the exit code from 1 to 99.  99 was chosen because
it is what Autotools and Meson use to represent a problem in the
setup (as opposed to a failure in the test).

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-03-08 19:08:23 +01:00

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#!/bin/sh -e
# Upload a created tarball to Coverity Scan, as per
# https://scan.coverity.com/projects/qemu/builds/new
# This work is licensed under the terms of the GNU GPL version 2,
# or (at your option) any later version.
# See the COPYING file in the top-level directory.
#
# Copyright (c) 2017-2020 Linaro Limited
# Written by Peter Maydell
# Note that this script will automatically download and
# run the (closed-source) coverity build tools, so don't
# use it if you don't trust them!
# This script assumes that you're running it from a QEMU source
# tree, and that tree is a fresh clean one, because we do an in-tree
# build. (This is necessary so that the filenames that the Coverity
# Scan server sees are relative paths that match up with the component
# regular expressions it uses; an out-of-tree build won't work for this.)
# The host machine should have as many of QEMU's dependencies
# installed as possible, for maximum coverity coverage.
# To do an upload you need to be a maintainer in the Coverity online
# service, and you will need to know the "Coverity token", which is a
# secret 8 digit hex string. You can find that from the web UI in the
# project settings, if you have maintainer access there.
# Command line options:
# --check-upload-only : return success if upload is possible
# --dry-run : run the tools, but don't actually do the upload
# --docker : create and work inside a container
# --docker-engine : specify the container engine to use (docker/podman/auto);
# implies --docker
# --update-tools-only : update the cached copy of the tools, but don't run them
# --no-update-tools : do not update the cached copy of the tools
# --tokenfile : file to read Coverity token from
# --version ver : specify version being analyzed (default: ask git)
# --description desc : specify description of this version (default: ask git)
# --srcdir : QEMU source tree to analyze (default: current working dir)
# --results-tarball : path to copy the results tarball to (default: don't
# copy it anywhere, just upload it)
# --src-tarball : tarball to untar into src dir (default: none); this
# is intended mainly for internal use by the Docker support
#
# User-specifiable environment variables:
# COVERITY_TOKEN -- Coverity token (default: looks at your
# coverity.token config)
# COVERITY_EMAIL -- the email address to use for uploads (default:
# looks at your git coverity.email or user.email config)
# COVERITY_BUILD_CMD -- make command (default: 'make -jN' where N is
# number of CPUs as determined by 'nproc')
# COVERITY_TOOL_BASE -- set to directory to put coverity tools
# (default: /tmp/coverity-tools)
#
# You must specify the token, either by environment variable or by
# putting it in a file and using --tokenfile. Everything else has
# a reasonable default if this is run from a git tree.
upload_permitted() {
# Check whether we can do an upload to the server; will exit *the script*
# with status 99 if the check failed (usually a bad token);
# will return from the function with status 1 if the check indicated
# that we can't upload yet (ie we are at quota)
# Assumes that COVERITY_TOKEN and PROJNAME have been initialized.
echo "Checking upload permissions..."
if ! up_perm="$(wget https://scan.coverity.com/api/upload_permitted --post-data "token=$COVERITY_TOKEN&project=$PROJNAME" -q -O -)"; then
echo "Coverity Scan API access denied: bad token?"
exit 99
fi
# Really up_perm is a JSON response with either
# {upload_permitted:true} or {next_upload_permitted_at:<date>}
# We do some hacky string parsing instead of properly parsing it.
case "$up_perm" in
*upload_permitted*true*)
return 0
;;
*next_upload_permitted_at*)
return 1
;;
*)
echo "Coverity Scan upload check: unexpected result $up_perm"
exit 99
;;
esac
}
check_upload_permissions() {
# Check whether we can do an upload to the server; will exit the script
# with status 99 if the check failed (usually a bad token);
# will exit the script with status 0 if the check indicated that we
# can't upload yet (ie we are at quota)
# Assumes that COVERITY_TOKEN, PROJNAME and DRYRUN have been initialized.
if upload_permitted; then
echo "Coverity Scan: upload permitted"
else
if [ "$DRYRUN" = yes ]; then
echo "Coverity Scan: upload quota reached, continuing dry run"
else
echo "Coverity Scan: upload quota reached; stopping here"
# Exit success as this isn't a build error.
exit 0
fi
fi
}
build_docker_image() {
# build docker container including the coverity-scan tools
echo "Building docker container..."
# TODO: This re-unpacks the tools every time, rather than caching
# and reusing the image produced by the COPY of the .tgz file.
# Not sure why.
tests/docker/docker.py --engine ${DOCKER_ENGINE} build \
-t coverity-scanner -f scripts/coverity-scan/coverity-scan.docker \
--extra-files scripts/coverity-scan/run-coverity-scan \
"$COVERITY_TOOL_BASE"/coverity_tool.tgz
}
update_coverity_tools () {
# Check for whether we need to download the Coverity tools
# (either because we don't have a copy, or because it's out of date)
# Assumes that COVERITY_TOOL_BASE, COVERITY_TOKEN and PROJNAME are set.
mkdir -p "$COVERITY_TOOL_BASE"
cd "$COVERITY_TOOL_BASE"
echo "Checking for new version of coverity build tools..."
wget https://scan.coverity.com/download/cxx/linux64 --post-data "token=$COVERITY_TOKEN&project=$PROJNAME&md5=1" -O coverity_tool.md5.new
if ! cmp -s coverity_tool.md5 coverity_tool.md5.new; then
# out of date md5 or no md5: download new build tool
# blow away the old build tool
echo "Downloading coverity build tools..."
rm -rf coverity_tool coverity_tool.tgz
wget https://scan.coverity.com/download/cxx/linux64 --post-data "token=$COVERITY_TOKEN&project=$PROJNAME" -O coverity_tool.tgz
if ! (cat coverity_tool.md5.new; echo " coverity_tool.tgz") | md5sum -c --status; then
echo "Downloaded tarball didn't match md5sum!"
exit 1
fi
if [ "$DOCKER" != yes ]; then
# extract the new one, keeping it corralled in a 'coverity_tool' directory
echo "Unpacking coverity build tools..."
mkdir -p coverity_tool
cd coverity_tool
tar xf ../coverity_tool.tgz
cd ..
mv coverity_tool.md5.new coverity_tool.md5
fi
fi
rm -f coverity_tool.md5.new
cd "$SRCDIR"
if [ "$DOCKER" = yes ]; then
build_docker_image
fi
}
# Check user-provided environment variables and arguments
DRYRUN=no
UPDATE=yes
DOCKER=no
PROJNAME=QEMU
while [ "$#" -ge 1 ]; do
case "$1" in
--check-upload-only)
shift
DRYRUN=check
;;
--dry-run)
shift
DRYRUN=yes
;;
--no-update-tools)
shift
UPDATE=no
;;
--update-tools-only)
shift
UPDATE=only
;;
--version)
shift
if [ $# -eq 0 ]; then
echo "--version needs an argument"
exit 1
fi
VERSION="$1"
shift
;;
--description)
shift
if [ $# -eq 0 ]; then
echo "--description needs an argument"
exit 1
fi
DESCRIPTION="$1"
shift
;;
--tokenfile)
shift
if [ $# -eq 0 ]; then
echo "--tokenfile needs an argument"
exit 1
fi
COVERITY_TOKEN="$(cat "$1")"
shift
;;
--srcdir)
shift
if [ $# -eq 0 ]; then
echo "--srcdir needs an argument"
exit 1
fi
SRCDIR="$1"
shift
;;
--results-tarball)
shift
if [ $# -eq 0 ]; then
echo "--results-tarball needs an argument"
exit 1
fi
RESULTSTARBALL="$1"
shift
;;
--src-tarball)
shift
if [ $# -eq 0 ]; then
echo "--src-tarball needs an argument"
exit 1
fi
SRCTARBALL="$1"
shift
;;
--docker)
DOCKER=yes
DOCKER_ENGINE=auto
shift
;;
--docker-engine)
shift
if [ $# -eq 0 ]; then
echo "--docker-engine needs an argument"
exit 1
fi
DOCKER=yes
DOCKER_ENGINE="$1"
shift
;;
*)
echo "Unexpected argument '$1'"
exit 1
;;
esac
done
if [ -z "$COVERITY_TOKEN" ]; then
COVERITY_TOKEN="$(git config coverity.token)"
fi
if [ -z "$COVERITY_TOKEN" ]; then
echo "COVERITY_TOKEN environment variable not set"
exit 1
fi
if [ "$DRYRUN" = check ]; then
upload_permitted
exit $?
fi
if [ -z "$COVERITY_BUILD_CMD" ]; then
NPROC=$(nproc)
COVERITY_BUILD_CMD="make -j$NPROC"
echo "COVERITY_BUILD_CMD: using default '$COVERITY_BUILD_CMD'"
fi
if [ -z "$COVERITY_TOOL_BASE" ]; then
echo "COVERITY_TOOL_BASE: using default /tmp/coverity-tools"
COVERITY_TOOL_BASE=/tmp/coverity-tools
fi
if [ -z "$SRCDIR" ]; then
SRCDIR="$PWD"
fi
TARBALL=cov-int.tar.xz
if [ "$UPDATE" = only ]; then
# Just do the tools update; we don't need to check whether
# we are in a source tree or have upload rights for this,
# so do it before some of the command line and source tree checks.
if [ "$DOCKER" = yes ] && [ ! -z "$SRCTARBALL" ]; then
echo --update-tools-only --docker is incompatible with --src-tarball.
exit 1
fi
update_coverity_tools
exit 0
fi
if [ ! -e "$SRCDIR" ]; then
mkdir "$SRCDIR"
fi
cd "$SRCDIR"
if [ ! -z "$SRCTARBALL" ]; then
echo "Untarring source tarball into $SRCDIR..."
tar xvf "$SRCTARBALL"
fi
echo "Checking this is a QEMU source tree..."
if ! [ -e "$SRCDIR/VERSION" ]; then
echo "Not in a QEMU source tree?"
exit 1
fi
# Fill in defaults used by the non-update-only process
if [ -z "$VERSION" ]; then
VERSION="$(git describe --always HEAD)"
fi
if [ -z "$DESCRIPTION" ]; then
DESCRIPTION="$(git rev-parse HEAD)"
fi
if [ -z "$COVERITY_EMAIL" ]; then
COVERITY_EMAIL="$(git config coverity.email)"
fi
if [ -z "$COVERITY_EMAIL" ]; then
COVERITY_EMAIL="$(git config user.email)"
fi
# Otherwise, continue with the full build and upload process.
check_upload_permissions
if [ "$UPDATE" != no ]; then
update_coverity_tools
fi
# Run ourselves inside docker if that's what the user wants
if [ "$DOCKER" = yes ]; then
# Put the Coverity token into a temporary file that only
# we have read access to, and then pass it to docker build
# using a volume. A volume is enough for the token not to
# leak into the Docker image.
umask 077
SECRETDIR=$(mktemp -d)
if [ -z "$SECRETDIR" ]; then
echo "Failed to create temporary directory"
exit 1
fi
trap 'rm -rf "$SECRETDIR"' INT TERM EXIT
echo "Created temporary directory $SECRETDIR"
SECRET="$SECRETDIR/token"
echo "$COVERITY_TOKEN" > "$SECRET"
echo "Archiving sources to be analyzed..."
./scripts/archive-source.sh "$SECRETDIR/qemu-sources.tgz"
ARGS="--no-update-tools"
if [ "$DRYRUN" = yes ]; then
ARGS="$ARGS --dry-run"
fi
echo "Running scanner..."
# If we need to capture the output tarball, get the inner run to
# save it to the secrets directory so we can copy it out before the
# directory is cleaned up.
if [ ! -z "$RESULTSTARBALL" ]; then
ARGS="$ARGS --results-tarball /work/cov-int.tar.xz"
fi
# Arrange for this docker run to get access to the sources with -v.
# We pass through all the configuration from the outer script to the inner.
export COVERITY_EMAIL COVERITY_BUILD_CMD
tests/docker/docker.py run -it --env COVERITY_EMAIL --env COVERITY_BUILD_CMD \
-v "$SECRETDIR:/work" coverity-scanner \
./run-coverity-scan --version "$VERSION" \
--description "$DESCRIPTION" $ARGS --tokenfile /work/token \
--srcdir /qemu --src-tarball /work/qemu-sources.tgz
if [ ! -z "$RESULTSTARBALL" ]; then
echo "Copying results tarball to $RESULTSTARBALL..."
cp "$SECRETDIR/cov-int.tar.xz" "$RESULTSTARBALL"
fi
echo "Docker work complete."
exit 0
fi
TOOLBIN="$(cd "$COVERITY_TOOL_BASE" && echo $PWD/coverity_tool/cov-analysis-*/bin)"
if ! test -x "$TOOLBIN/cov-build"; then
echo "Couldn't find cov-build in the coverity build-tool directory??"
exit 1
fi
export PATH="$TOOLBIN:$PATH"
cd "$SRCDIR"
echo "Nuking build directory..."
rm -rf +build
mkdir +build
cd +build
echo "Configuring..."
# We configure with a fixed set of enables here to ensure that we don't
# accidentally reduce the scope of the analysis by doing the build on
# the system that's missing a dependency that we need to build part of
# the codebase.
../configure --disable-modules --enable-sdl --enable-gtk \
--enable-opengl --enable-vte --enable-gnutls \
--enable-nettle --enable-curses --enable-curl \
--audio-drv-list=oss,alsa,sdl,pa --enable-virtfs \
--enable-vnc --enable-vnc-sasl --enable-vnc-jpeg --enable-png \
--enable-xen --enable-brlapi \
--enable-linux-aio --enable-attr \
--enable-cap-ng --enable-trace-backends=log --enable-spice --enable-rbd \
--enable-libusb --enable-usb-redir \
--enable-libiscsi --enable-libnfs --enable-seccomp \
--enable-tpm --enable-libssh --enable-lzo --enable-snappy --enable-bzip2 \
--enable-numa --enable-rdma --enable-smartcard --enable-virglrenderer \
--enable-mpath --enable-glusterfs \
--enable-virtfs --enable-zstd
echo "Running cov-build..."
rm -rf cov-int
mkdir cov-int
cov-build --dir cov-int $COVERITY_BUILD_CMD
echo "Creating results tarball..."
tar cvf - cov-int | xz > "$TARBALL"
if [ ! -z "$RESULTSTARBALL" ]; then
echo "Copying results tarball to $RESULTSTARBALL..."
cp "$TARBALL" "$RESULTSTARBALL"
fi
echo "Uploading results tarball..."
if [ "$DRYRUN" = yes ]; then
echo "Dry run only, not uploading $TARBALL"
exit 0
fi
curl --form token="$COVERITY_TOKEN" --form email="$COVERITY_EMAIL" \
--form file=@"$TARBALL" --form version="$VERSION" \
--form description="$DESCRIPTION" \
https://scan.coverity.com/builds?project="$PROJNAME"
echo "Done."
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