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CI: Add code linting (#118)

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Knut Ahlers 2023-10-04 22:53:29 +02:00 committed by GitHub
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commit 8540d4016c
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8 changed files with 200 additions and 14 deletions
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3
.github/workflows/test-and-build.yml vendored
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@ -53,16 +53,19 @@ jobs:
- name: 'Lint and test code: API'
run: |
go test -cover -v ./...
golangci-lint run ./...
- name: 'Lint and test code: Client'
working-directory: ./pkg/client
run: |
go test -cover -v ./...
golangci-lint run ./...
- name: 'Lint and test code: OTS-CLI'
working-directory: ./cmd/ots-cli
run: |
go test -cover -v ./...
golangci-lint run ./...
- name: Generate (and validate) translations
run: make translate

174
.golangci.yml Normal file
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@ -0,0 +1,174 @@
# Derived from https://github.com/golangci/golangci-lint/blob/master/.golangci.example.yml
---
run:
# timeout for analysis, e.g. 30s, 5m, default is 1m
timeout: 5m
# Force readonly modules usage for checking
modules-download-mode: readonly
output:
format: tab
issues:
# This disables the included exclude-list in golangci-lint as that
# list for example fully hides G304 gosec rule, errcheck, exported
# rule of revive and other errors one really wants to see.
# Smme detail: https://github.com/golangci/golangci-lint/issues/456
exclude-use-default: false
# Don't limit the number of shown issues: Report ALL of them
max-issues-per-linter: 0
max-same-issues: 0
linters:
disable-all: true
enable:
- asciicheck # Simple linter to check that your code does not contain non-ASCII identifiers [fast: true, auto-fix: false]
- bidichk # Checks for dangerous unicode character sequences [fast: true, auto-fix: false]
- bodyclose # checks whether HTTP response body is closed successfully [fast: true, auto-fix: false]
- containedctx # containedctx is a linter that detects struct contained context.Context field [fast: true, auto-fix: false]
- contextcheck # check the function whether use a non-inherited context [fast: false, auto-fix: false]
- dogsled # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f()) [fast: true, auto-fix: false]
- durationcheck # check for two durations multiplied together [fast: false, auto-fix: false]
- errcheck # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases [fast: false, auto-fix: false]
- errchkjson # Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occations, where the check for the returned error can be omitted. [fast: false, auto-fix: false]
- exportloopref # checks for pointers to enclosing loop variables [fast: true, auto-fix: false]
- forbidigo # Forbids identifiers [fast: true, auto-fix: false]
- funlen # Tool for detection of long functions [fast: true, auto-fix: false]
- gocognit # Computes and checks the cognitive complexity of functions [fast: true, auto-fix: false]
- goconst # Finds repeated strings that could be replaced by a constant [fast: true, auto-fix: false]
- gocritic # The most opinionated Go source code linter [fast: true, auto-fix: false]
- gocyclo # Computes and checks the cyclomatic complexity of functions [fast: true, auto-fix: false]
- godox # Tool for detection of FIXME, TODO and other comment keywords [fast: true, auto-fix: false]
- gofmt # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification [fast: true, auto-fix: true]
- gofumpt # Gofumpt checks whether code was gofumpt-ed. [fast: true, auto-fix: true]
- goimports # Goimports does everything that gofmt does. Additionally it checks unused imports [fast: true, auto-fix: true]
- gomnd # An analyzer to detect magic numbers. [fast: true, auto-fix: false]
- gosec # Inspects source code for security problems [fast: true, auto-fix: false]
- gosimple # Linter for Go source code that specializes in simplifying a code [fast: true, auto-fix: false]
- govet # Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string [fast: true, auto-fix: false]
- ineffassign # Detects when assignments to existing variables are not used [fast: true, auto-fix: false]
- misspell # Finds commonly misspelled English words in comments [fast: true, auto-fix: true]
- nakedret # Finds naked returns in functions greater than a specified function length [fast: true, auto-fix: false]
- nilerr # Finds the code that returns nil even if it checks that the error is not nil. [fast: false, auto-fix: false]
- nilnil # Checks that there is no simultaneous return of `nil` error and an invalid value. [fast: false, auto-fix: false]
- noctx # noctx finds sending http request without context.Context [fast: true, auto-fix: false]
- nolintlint # Reports ill-formed or insufficient nolint directives [fast: true, auto-fix: false]
- revive # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint. [fast: false, auto-fix: false]
- staticcheck # Staticcheck is a go vet on steroids, applying a ton of static analysis checks [fast: true, auto-fix: false]
- stylecheck # Stylecheck is a replacement for golint [fast: true, auto-fix: false]
- tenv # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17 [fast: false, auto-fix: false]
- typecheck # Like the front-end of a Go compiler, parses and type-checks Go code [fast: true, auto-fix: false]
- unconvert # Remove unnecessary type conversions [fast: true, auto-fix: false]
- unused # Checks Go code for unused constants, variables, functions and types [fast: false, auto-fix: false]
- wastedassign # wastedassign finds wasted assignment statements. [fast: false, auto-fix: false]
- wrapcheck # Checks that errors returned from external packages are wrapped [fast: false, auto-fix: false]
linters-settings:
funlen:
lines: 100
statements: 60
gocyclo:
# minimal code complexity to report, 30 by default (but we recommend 10-20)
min-complexity: 15
gomnd:
settings:
mnd:
ignored-functions: 'strconv.(?:Format|Parse)\B+'
revive:
rules:
#- name: add-constant # Suggests using constant for magic numbers and string literals
# Opinion: Makes sense for strings, not for numbers but checks numbers
#- name: argument-limit # Specifies the maximum number of arguments a function can receive | Opinion: Don't need this
- name: atomic # Check for common mistaken usages of the `sync/atomic` package
- name: banned-characters # Checks banned characters in identifiers
arguments:
- ';' # Greek question mark
- name: bare-return # Warns on bare returns
- name: blank-imports # Disallows blank imports
- name: bool-literal-in-expr # Suggests removing Boolean literals from logic expressions
- name: call-to-gc # Warns on explicit call to the garbage collector
#- name: cognitive-complexity # Sets restriction for maximum Cognitive complexity.
# There is a dedicated linter for this
- name: confusing-naming # Warns on methods with names that differ only by capitalization
- name: confusing-results # Suggests to name potentially confusing function results
- name: constant-logical-expr # Warns on constant logical expressions
- name: context-as-argument # `context.Context` should be the first argument of a function.
- name: context-keys-type # Disallows the usage of basic types in `context.WithValue`.
#- name: cyclomatic # Sets restriction for maximum Cyclomatic complexity.
# There is a dedicated linter for this
#- name: datarace # Spots potential dataraces
# Is not (yet) available?
- name: deep-exit # Looks for program exits in funcs other than `main()` or `init()`
- name: defer # Warns on some [defer gotchas](https://blog.learngoprogramming.com/5-gotchas-of-defer-in-go-golang-part-iii-36a1ab3d6ef1)
- name: dot-imports # Forbids `.` imports.
- name: duplicated-imports # Looks for packages that are imported two or more times
- name: early-return # Spots if-then-else statements that can be refactored to simplify code reading
- name: empty-block # Warns on empty code blocks
- name: empty-lines # Warns when there are heading or trailing newlines in a block
- name: errorf # Should replace `errors.New(fmt.Sprintf())` with `fmt.Errorf()`
- name: error-naming # Naming of error variables.
- name: error-return # The error return parameter should be last.
- name: error-strings # Conventions around error strings.
- name: exported # Naming and commenting conventions on exported symbols.
arguments: ['sayRepetitiveInsteadOfStutters']
#- name: file-header # Header which each file should have.
# Useless without config, have no config for it
- name: flag-parameter # Warns on boolean parameters that create a control coupling
#- name: function-length # Warns on functions exceeding the statements or lines max
# There is a dedicated linter for this
#- name: function-result-limit # Specifies the maximum number of results a function can return
# Opinion: Don't need this
- name: get-return # Warns on getters that do not yield any result
- name: identical-branches # Spots if-then-else statements with identical `then` and `else` branches
- name: if-return # Redundant if when returning an error.
#- name: imports-blacklist # Disallows importing the specified packages
# Useless without config, have no config for it
- name: import-shadowing # Spots identifiers that shadow an import
- name: increment-decrement # Use `i++` and `i--` instead of `i += 1` and `i -= 1`.
- name: indent-error-flow # Prevents redundant else statements.
#- name: line-length-limit # Specifies the maximum number of characters in a lined
# There is a dedicated linter for this
#- name: max-public-structs # The maximum number of public structs in a file.
# Opinion: Don't need this
- name: modifies-parameter # Warns on assignments to function parameters
- name: modifies-value-receiver # Warns on assignments to value-passed method receivers
#- name: nested-structs # Warns on structs within structs
# Opinion: Don't need this
- name: optimize-operands-order # Checks inefficient conditional expressions
#- name: package-comments # Package commenting conventions.
# Opinion: Don't need this
- name: range # Prevents redundant variables when iterating over a collection.
- name: range-val-address # Warns if address of range value is used dangerously
- name: range-val-in-closure # Warns if range value is used in a closure dispatched as goroutine
- name: receiver-naming # Conventions around the naming of receivers.
- name: redefines-builtin-id # Warns on redefinitions of builtin identifiers
#- name: string-format # Warns on specific string literals that fail one or more user-configured regular expressions
# Useless without config, have no config for it
- name: string-of-int # Warns on suspicious casts from int to string
- name: struct-tag # Checks common struct tags like `json`,`xml`,`yaml`
- name: superfluous-else # Prevents redundant else statements (extends indent-error-flow)
- name: time-equal # Suggests to use `time.Time.Equal` instead of `==` and `!=` for equality check time.
- name: time-naming # Conventions around the naming of time variables.
- name: unconditional-recursion # Warns on function calls that will lead to (direct) infinite recursion
- name: unexported-naming # Warns on wrongly named un-exported symbols
- name: unexported-return # Warns when a public return is from unexported type.
- name: unhandled-error # Warns on unhandled errors returned by funcion calls
arguments:
- "fmt.(Fp|P)rint(f|ln|)"
- name: unnecessary-stmt # Suggests removing or simplifying unnecessary statements
- name: unreachable-code # Warns on unreachable code
- name: unused-parameter # Suggests to rename or remove unused function parameters
- name: unused-receiver # Suggests to rename or remove unused method receivers
#- name: use-any # Proposes to replace `interface{}` with its alias `any`
# Is not (yet) available?
- name: useless-break # Warns on useless `break` statements in case clauses
- name: var-declaration # Reduces redundancies around variable declaration.
- name: var-naming # Naming rules.
- name: waitgroup-by-value # Warns on functions taking sync.WaitGroup as a by-value parameter
...

11
api.go
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@ -22,7 +22,7 @@ type apiResponse struct {
Error string `json:"error,omitempty"`
ExpiresAt *time.Time `json:"expires_at,omitempty"`
Secret string `json:"secret,omitempty"`
SecretId string `json:"secret_id,omitempty"`
SecretID string `json:"secret_id,omitempty"`
}
type apiRequest struct {
@ -83,7 +83,7 @@ func (a apiServer) handleCreate(res http.ResponseWriter, r *http.Request) {
a.jsonResponse(res, http.StatusCreated, apiResponse{
ExpiresAt: expiresAt,
Success: true,
SecretId: id,
SecretID: id,
})
}
@ -124,10 +124,13 @@ func (a apiServer) errorResponse(res http.ResponseWriter, status int, err error,
})
}
func (a apiServer) jsonResponse(res http.ResponseWriter, status int, response apiResponse) {
func (apiServer) jsonResponse(res http.ResponseWriter, status int, response apiResponse) {
res.Header().Set("Content-Type", "application/json")
res.Header().Set("Cache-Control", "no-store, max-age=0")
res.WriteHeader(status)
json.NewEncoder(res).Encode(response)
if err := json.NewEncoder(res).Encode(response); err != nil {
logrus.WithError(err).Error("encoding JSON response")
http.Error(res, `{"error":"could not encode response"}`, http.StatusInternalServerError)
}
}

8
customize.go
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@ -38,7 +38,7 @@ func loadCustomize(filename string) (cust customize, err error) {
return cust, nil
}
cf, err := os.Open(filename)
cf, err := os.Open(filename) //#nosec:G304 // Loading a custom file is the intention here
if err != nil {
if errors.Is(err, fs.ErrNotExist) {
logrus.Warn("customize file given but not found")
@ -46,7 +46,11 @@ func loadCustomize(filename string) (cust customize, err error) {
}
return cust, errors.Wrap(err, "opening customize file")
}
defer cf.Close()
defer func() {
if err := cf.Close(); err != nil {
logrus.WithError(err).Error("closing customize file (leaked fd)")
}
}()
if err = yaml.NewDecoder(cf).Decode(&cust); err != nil {
return cust, errors.Wrap(err, "decoding customize file")

6
main.go
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@ -155,10 +155,12 @@ func assetDelivery(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", mime.TypeByExtension(ext))
w.Header().Set("X-Content-Type-Options", "nosniff")
w.Write(assetData)
if _, err = w.Write(assetData); err != nil {
logrus.WithError(err).Error("writing asset data")
}
}
func handleIndex(w http.ResponseWriter, r *http.Request) {
func handleIndex(w http.ResponseWriter, _ *http.Request) {
inlineContentNonce := make([]byte, scriptNonceSize)
if _, err := rand.Read(inlineContentNonce); err != nil {
logrus.WithError(err).Error("generating script nonce")

4
storage.go
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@ -6,7 +6,7 @@ import (
"time"
)
var errSecretNotFound = errors.New("Secret not found")
var errSecretNotFound = errors.New("secret not found")
type storage interface {
Create(secret string, expireIn time.Duration) (string, error)
@ -20,6 +20,6 @@ func getStorageByType(t string) (storage, error) {
case "redis":
return newStorageRedis()
default:
return nil, fmt.Errorf("Storage type %q not found", t)
return nil, fmt.Errorf("storage type %q not found", t)
}
}

6
storage_redis.go
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@ -53,14 +53,14 @@ func (s storageRedis) ReadAndDestroy(id string) (string, error) {
if errors.Is(err, redis.Nil) {
return "", errSecretNotFound
}
return "", err
return "", errors.Wrap(err, "getting key")
}
err = s.conn.Del(context.Background(), s.redisKey(id)).Err()
return string(secret), errors.Wrap(err, "deleting key")
return secret, errors.Wrap(err, "deleting key")
}
func (s storageRedis) redisKey(id string) string {
func (storageRedis) redisKey(id string) string {
prefix := redisDefaultPrefix
if prfx := os.Getenv("REDIS_KEY"); prfx != "" {
prefix = prfx

2
tplFuncs.go
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@ -30,7 +30,7 @@ func assetSRIHash(assetName string) string {
}
h := sha512.New384()
h.Write(data)
_, _ = h.Write(data)
sum := h.Sum(nil)
sri := "sha384-" + base64.StdEncoding.EncodeToString(sum)