AdGuardHome/scripts/make/go-lint.sh
2023-06-07 20:04:01 +03:00

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#!/bin/sh
# This comment is used to simplify checking local copies of the script. Bump
# this number every time a significant change is made to this script.
#
# AdGuard-Project-Version: 3
verbose="${VERBOSE:-0}"
readonly verbose
if [ "$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
set -f -u
# Source the common helpers, including not_found and run_linter.
. ./scripts/make/helper.sh
# Warnings
go_version="$( "${GO:-go}" version )"
readonly go_version
go_min_version='go1.19.10'
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:
#
# * Packages errors and log are replaced by our own packages in the
# github.com/AdguardTeam/golibs module.
#
# * Package io/ioutil is soft-deprecated.
#
# * 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 sort is replaced by golang.org/x/exp/slices.
#
# * Package unsafe is… unsafe.
#
# * Package golang.org/x/net/context has been moved into stdlib.
#
blocklist_imports() {
git grep\
-e '[[:space:]]"errors"$'\
-e '[[:space:]]"io/ioutil"$'\
-e '[[:space:]]"log"$'\
-e '[[:space:]]"reflect"$'\
-e '[[:space:]]"sort"$'\
-e '[[:space:]]"unsafe"$'\
-e '[[:space:]]"golang.org/x/net/context"$'\
-n\
-- '*.go'\
| sed -e 's/^\([^[:space:]]\+\)\(.*\)$/\1 blocked import:\2/'\
|| 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 '"DELETE"'\
-e '"GET"'\
-e '"POST"'\
-e '"PUT"'\
-n\
-- '*.go'\
| sed -e 's/^\([^[:space:]]\+\)\(.*\)$/\1 http method literal:\2/'\
|| exit 0
}
# underscores is a simple check against Go filenames with underscores. Add new
# build tags and OS as you go. The main goal of this check is to discourage the
# use of filenames like client_manager.go.
underscores() {
underscore_files="$(
git ls-files '*_*.go'\
| grep -F\
-e '_big.go'\
-e '_bsd.go'\
-e '_darwin.go'\
-e '_freebsd.go'\
-e '_linux.go'\
-e '_little.go'\
-e '_openbsd.go'\
-e '_others.go'\
-e '_test.go'\
-e '_unix.go'\
-e '_windows.go' \
-v\
| sed -e 's/./\t\0/'
)"
readonly underscore_files
if [ "$underscore_files" != '' ]
then
echo 'found file names with underscores:'
echo "$underscore_files"
fi
}
# TODO(a.garipov): Add an analyzer to look for `fallthrough`, `goto`, and `new`?
# Checks
run_linter -e blocklist_imports
run_linter -e method_const
run_linter -e underscores
run_linter -e gofumpt --extra -e -l .
# TODO(a.garipov): golint is deprecated, find a suitable replacement.
run_linter "$GO" vet ./...
run_linter govulncheck ./...
run_linter gocyclo --over 10 .
run_linter ineffassign ./...
run_linter unparam ./...
git ls-files -- 'Makefile' '*.go' '*.mod' '*.sh' '*.yaml' '*.yml'\
| xargs misspell --error
run_linter looppointer ./...
run_linter nilness ./...
# TODO(a.garipov): Add fieldalignment?
run_linter -e shadow --strict ./...
# TODO(a.garipov): Enable in v0.108.0.
# run_linter gosec --quiet ./...
# TODO(a.garipov): Enable --blank?
run_linter errcheck --asserts ./...
run_linter staticcheck ./...