AdGuardHome/scripts/make/go-lint.sh

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#!/bin/sh
verbose="${VERBOSE:-0}"
# Set verbosity.
if [ "$verbose" -gt '0' ]
then
set -x
fi
# Set $EXIT_ON_ERROR to zero to see all errors.
if [ "${EXIT_ON_ERROR:-1}" -eq '0' ]
then
set +e
else
set -e
fi
# We don't need glob expansions and we want to see errors about unset variables.
set -f -u
# Deferred Helpers
not_found_msg='
looks like a binary not found error.
make sure you have installed the linter binaries using:
$ make go-tools
'
readonly not_found_msg
# TODO(a.garipov): Put it into a separate script and source it both here and in
# txt-lint.sh?
not_found() {
if [ "$?" -eq '127' ]
then
# Code 127 is the exit status a shell uses when a command or
# a file is not found, according to the Bash Hackers wiki.
#
# See https://wiki.bash-hackers.org/dict/terms/exit_status.
echo "$not_found_msg" 1>&2
fi
}
trap not_found EXIT
# Warnings
go_version="$( "$GO" version )"
readonly go_version
go_min_version='go1.17'
go_version_msg="
warning: your go version (${go_version}) is different from the recommended minimal one (${go_min_version}).
if you have the version installed, please set the GO environment variable.
for example:
export GO='${go_min_version}'
"
readonly go_min_version go_version_msg
case "$go_version"
in
('go version'*"$go_min_version"*)
# Go on.
;;
(*)
echo "$go_version_msg" 1>&2
;;
esac
# Simple Analyzers
# blocklist_imports is a simple check against unwanted packages. The following
# packages are banned:
#
# * Package io/ioutil is soft-deprecated.
#
# * Packages errors and log are replaced by our own packages in the
# github.com/AdguardTeam/golibs module.
#
# * Package reflect is often an overkill, and for deep comparisons there are
# much better functions in module github.com/google/go-cmp. Which is
# already our indirect dependency and which may or may not enter the stdlib
# at some point.
#
# See https://github.com/golang/go/issues/45200.
#
# * Package unsafe is… unsafe.
#
blocklist_imports() {
git grep\
-e '[[:space:]]"errors"$'\
-e '[[:space:]]"io/ioutil"$'\
-e '[[:space:]]"log"$'\
-e '[[:space:]]"reflect"$'\
-e '[[:space:]]"unsafe"$'\
-- '*.go' || exit 0;
}
# method_const is a simple check against the usage of some raw strings and
# numbers where one should use named constants.
method_const() {
git grep -F -e '"GET"' -e '"POST"' -- '*.go' || exit 0;
}
# underscores is a simple check against Go filenames with underscores.
underscores() {
git ls-files '*_*.go' | {
grep -F\
-e '_big.go'\
-e '_bsd.go'\
-e '_darwin.go'\
-e '_freebsd.go'\
-e '_openbsd.go'\
-e '_linux.go'\
-e '_little.go'\
-e '_others.go'\
-e '_test.go'\
-e '_unix.go'\
-e '_windows.go' \
-v\
|| exit 0
}
}
# TODO(a.garipov): Add an analyser to look for `fallthrough`, `goto`, and `new`?
# Helpers
# exit_on_output exits with a nonzero exit code if there is anything in the
# command's combined output.
exit_on_output() (
set +e
if [ "$VERBOSE" -lt '2' ]
then
set +x
fi
cmd="$1"
shift
output="$( "$cmd" "$@" 2>&1 )"
exitcode="$?"
if [ "$exitcode" != '0' ]
then
echo "'$cmd' failed with code $exitcode"
fi
if [ "$output" != '' ]
then
if [ "$*" != '' ]
then
echo "combined output of '$cmd $*':"
else
echo "combined output of '$cmd':"
fi
echo "$output"
if [ "$exitcode" -eq '0' ]
then
exitcode='1'
fi
fi
return "$exitcode"
)
# Constants
go_files='./main.go ./internal/'
readonly go_files
# Checks
exit_on_output blocklist_imports
exit_on_output method_const
exit_on_output underscores
exit_on_output gofumpt --extra -e -l .
golint --set_exit_status ./...
"$GO" vet ./...
# Apply more lax standards to the code we haven't properly refactored yet.
gocyclo --over 17 ./internal/dhcpd/ ./internal/dnsforward/\
./internal/filtering/ ./internal/home/ ./internal/querylog/
# Apply stricter standards to new or somewhat refactored code.
gocyclo --over 10 ./internal/aghio/ ./internal/aghnet/ ./internal/aghos/\
./internal/aghtest/ ./internal/stats/ ./internal/tools/\
./internal/updater/ ./internal/version/ ./main.go
gosec --quiet $go_files
ineffassign ./...
unparam ./...
git ls-files -- '*.go' '*.mod' '*.sh' 'Makefile' | xargs misspell --error
looppointer ./...
nilness ./...
exit_on_output shadow --strict ./...
# TODO(a.garipov): Enable --blank?
errcheck --asserts ./...
staticcheck ./...