Configure golangci-lint and apply suggestions

.golangci.yml

@@ -0,0 +1,63 @@
+---
+run:
+  skip-files:
+    - boardvoting/assets.go
+ 
+output:
+  sort-results: true
+
+linter-settings:
+  goheader:
+    values:
+      const:
+        ORGANIZATION: CAcert Inc.
+    template: |
+      Copyright {{ YEAR-RANGE }} {{ ORGANIZATION }}
+      SPDX-License-Identifier: Apache-2.0
+
+      Licensed under the Apache License, Version 2.0 (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+  goimports:
+    local-prefixes: git.cacert.org/cacert-boardvoting
+  misspell:
+    locale: US
+    ignore-words:
+      - CAcert
+
+linters:
+  disable-all: false
+  enable:
+    - bodyclose
+    - errorlint
+    - gocognit
+    - goconst
+    - gocritic
+    - gofmt
+    - goheader
+    - goimports
+    - golint
+    - gomnd
+    - gosec
+    - interfacer
+    - lll
+    - makezero
+    - misspell
+    - nakedret
+    - nestif
+    - nlreturn
+    - nolintlint
+    - predeclared
+    - rowserrcheck
+    - scopelint
+    - sqlclosecheck
+    - wrapcheck
+    - wsl

boardvoting.go

@@ -1,18 +1,20 @@
 /*
-   Copyright 2017-2020 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
+// The CAcert board voting software.
 package main
 
 import (
@@ -51,12 +53,21 @@ var csrfKey []byte
 var version = "undefined"
 var build = "undefined"
 
-const sessionCookieName = "votesession"
+const (
+	cookieSecretMinLen    = 32
+	csrfKeyLength         = 32
+	httpIdleTimeout       = 5
+	httpReadHeaderTimeout = 10
+	httpReadTimeout       = 10
+	httpWriteTimeout      = 60
+	sessionCookieName     = "votesession"
+)
 
 func renderTemplate(w http.ResponseWriter, r *http.Request, templates []string, context interface{}) {
 	funcMaps := sprig.FuncMap()
 	funcMaps["nl2br"] = func(text string) template.HTML {
-		return template.HTML(strings.Replace(template.HTMLEscapeString(text), "\n", "<br>", -1))
+		// #nosec G203 input is sanitized
+		return template.HTML(strings.ReplaceAll(template.HTMLEscapeString(text), "\n", "<br>"))
 	}
 	funcMaps[csrf.TemplateTag] = func() template.HTML {
 		return csrf.TemplateField(r)
@@ -65,20 +76,24 @@ func renderTemplate(w http.ResponseWriter, r *http.Request, templates []string,
 	var baseTemplate *template.Template
 
 	for count, t := range templates {
-		var err error
-		var assetBytes []byte
-		if //noinspection GoUnresolvedReference
-		assetBytes, err = boardvoting.Asset(fmt.Sprintf("templates/%s", t)); err != nil {
+		var (
+			err        error
+			assetBytes []byte
+		)
+
+		if assetBytes, err = boardvoting.Asset(fmt.Sprintf("templates/%s", t)); err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
+
+			return
+		}
+
+		if count == 0 {
+			if baseTemplate, err = template.New(t).Funcs(funcMaps).Parse(string(assetBytes)); err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+			}
 		} else {
-			if count == 0 {
-				if baseTemplate, err = template.New(t).Funcs(funcMaps).Parse(string(assetBytes)); err != nil {
-					http.Error(w, err.Error(), http.StatusInternalServerError)
-				}
-			} else {
-				if _, err := baseTemplate.New(t).Funcs(funcMaps).Parse(string(assetBytes)); err != nil {
-					http.Error(w, err.Error(), http.StatusInternalServerError)
-				}
+			if _, err := baseTemplate.New(t).Funcs(funcMaps).Parse(string(assetBytes)); err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
 			}
 		}
 	}
@@ -100,27 +115,35 @@ const (
 
 func authenticateRequest(w http.ResponseWriter, r *http.Request, handler func(http.ResponseWriter, *http.Request)) {
 	emailsTried := make(map[string]bool)
+
 	for _, cert := range r.TLS.PeerCertificates {
 		for _, extKeyUsage := range cert.ExtKeyUsage {
-			if extKeyUsage == x509.ExtKeyUsageClientAuth {
-				for _, emailAddress := range cert.EmailAddresses {
-					emailLower := strings.ToLower(emailAddress)
-					emailsTried[emailLower] = true
-					voter, err := FindVoterByAddress(emailLower)
-					if err != nil {
-						http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
-						return
-					}
-					if voter != nil {
-						requestContext := context.WithValue(r.Context(), ctxVoter, voter)
-						requestContext = context.WithValue(requestContext, ctxAuthenticatedCert, cert)
-						handler(w, r.WithContext(requestContext))
-						return
-					}
+			if extKeyUsage != x509.ExtKeyUsageClientAuth {
+				continue
+			}
+
+			for _, emailAddress := range cert.EmailAddresses {
+				emailLower := strings.ToLower(emailAddress)
+				emailsTried[emailLower] = true
+
+				voter, err := FindVoterByAddress(emailLower)
+				if err != nil {
+					http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+					return
+				}
+
+				if voter != nil {
+					requestContext := context.WithValue(r.Context(), ctxVoter, voter)
+					requestContext = context.WithValue(requestContext, ctxAuthenticatedCert, cert)
+					handler(w, r.WithContext(requestContext))
+
+					return
 				}
 			}
 		}
 	}
+
 	needsAuth, ok := r.Context().Value(ctxNeedsAuth).(bool)
 	if ok && needsAuth {
 		var templateContext struct {
@@ -129,14 +152,18 @@ func authenticateRequest(w http.ResponseWriter, r *http.Request, handler func(ht
 			Flashes   interface{}
 			Emails    []string
 		}
+
 		for k := range emailsTried {
 			templateContext.Emails = append(templateContext.Emails, k)
 		}
+
 		sort.Strings(templateContext.Emails)
 		w.WriteHeader(http.StatusForbidden)
 		renderTemplate(w, r, []string{"denied.html", "header.html", "footer.html"}, templateContext)
+
 		return
 	}
+
 	handler(w, r)
 }
 
@@ -154,6 +181,7 @@ type motionListParameters struct {
 func parseMotionParameters(r *http.Request) motionParameters {
 	var m = motionParameters{}
 	m.ShowVotes, _ = strconv.ParseBool(r.URL.Query().Get("showvotes"))
+
 	return m
 }
 
@@ -164,20 +192,24 @@ func parseMotionListParameters(r *http.Request) motionListParameters {
 	} else {
 		m.Page = page
 	}
+
 	m.Flags.Withdraw, _ = strconv.ParseBool(r.URL.Query().Get("withdraw"))
 	m.Flags.Unvoted, _ = strconv.ParseBool(r.URL.Query().Get("unvoted"))
 
 	if r.Method == http.MethodPost {
 		m.Flags.Confirmed, _ = strconv.ParseBool(r.PostFormValue("confirm"))
 	}
+
 	return m
 }
 
 func motionListHandler(w http.ResponseWriter, r *http.Request) {
 	params := parseMotionListParameters(r)
+
 	session, err := store.Get(r, sessionCookieName)
 	if err != nil {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
 
@@ -189,30 +221,42 @@ func motionListHandler(w http.ResponseWriter, r *http.Request) {
 		PageTitle          string
 		Flashes            interface{}
 	}
+
 	if voter, ok := r.Context().Value(ctxVoter).(*Voter); ok {
 		templateContext.Voter = voter
 	}
+
 	if flashes := session.Flashes(); len(flashes) > 0 {
 		templateContext.Flashes = flashes
 	}
+
 	err = session.Save(r, w)
 	if err != nil {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	templateContext.Params = &params
 
-	if templateContext.Decisions, err = FindDecisionsForDisplayOnPage(params.Page, params.Flags.Unvoted, templateContext.Voter); err != nil {
+	if templateContext.Decisions, err = FindDecisionsForDisplayOnPage(
+		params.Page, params.Flags.Unvoted, templateContext.Voter,
+	); err != nil {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
 
 	if len(templateContext.Decisions) > 0 {
-		olderExists, err := templateContext.Decisions[len(templateContext.Decisions)-1].OlderExists(params.Flags.Unvoted, templateContext.Voter)
+		olderExists, err := templateContext.Decisions[len(templateContext.Decisions)-1].OlderExists(
+			params.Flags.Unvoted, templateContext.Voter,
+		)
 		if err != nil {
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 			return
 		}
+
 		if olderExists {
 			templateContext.NextPage = params.Page + 1
 		}
@@ -233,6 +277,7 @@ func motionHandler(w http.ResponseWriter, r *http.Request) {
 	decision, ok := getDecisionFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusPreconditionFailed), http.StatusPreconditionFailed)
+
 		return
 	}
 
@@ -244,32 +289,53 @@ func motionHandler(w http.ResponseWriter, r *http.Request) {
 		PageTitle          string
 		Flashes            interface{}
 	}
+
 	voter, ok := getVoterFromRequest(r)
 	if ok {
 		templateContext.Voter = voter
 	}
+
 	templateContext.Params = &params
+
 	if params.ShowVotes {
 		if err := decision.LoadVotes(); err != nil {
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 			return
 		}
 	}
+
 	templateContext.Decision = decision
 	templateContext.PageTitle = fmt.Sprintf("Motion %s: %s", decision.Tag, decision.Title)
-	renderTemplate(w, r, []string{"motion.html", "motion_fragments.html", "page_fragments.html", "header.html", "footer.html"}, templateContext)
+
+	renderTemplate(w, r, []string{
+		"motion.html",
+		"motion_fragments.html",
+		"page_fragments.html",
+		"header.html",
+		"footer.html",
+	}, templateContext)
 }
 
-func singleDecisionHandler(w http.ResponseWriter, r *http.Request, tag string, handler func(http.ResponseWriter, *http.Request)) {
+func singleDecisionHandler(
+	w http.ResponseWriter,
+	r *http.Request,
+	tag string,
+	handler func(http.ResponseWriter, *http.Request),
+) {
 	decision, err := FindDecisionForDisplayByTag(tag)
 	if err != nil {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	if decision == nil {
 		http.NotFound(w, r)
+
 		return
 	}
+
 	handler(w, r.WithContext(context.WithValue(r.Context(), ctxDecision, decision)))
 }
 
@@ -286,16 +352,19 @@ func (authenticationRequiredHandler) NeedsAuth() bool {
 
 func getVoterFromRequest(r *http.Request) (voter *Voter, ok bool) {
 	voter, ok = r.Context().Value(ctxVoter).(*Voter)
+
 	return
 }
 
 func getDecisionFromRequest(r *http.Request) (decision *DecisionForDisplay, ok bool) {
 	decision, ok = r.Context().Value(ctxDecision).(*DecisionForDisplay)
+
 	return
 }
 
 func getVoteFromRequest(r *http.Request) (vote VoteChoice, ok bool) {
 	vote, ok = r.Context().Value(ctxVote).(VoteChoice)
+
 	return
 }
 
@@ -305,12 +374,16 @@ func (a *FlashMessageAction) AddFlash(w http.ResponseWriter, r *http.Request, me
 	session, err := store.Get(r, sessionCookieName)
 	if err != nil {
 		log.Warnf("could not get session cookie: %v", err)
+
 		return
 	}
+
 	session.AddFlash(message, tags...)
+
 	err = session.Save(r, w)
 	if err != nil {
 		log.Warnf("could not save flash message: %v", err)
+
 		return
 	}
 }
@@ -324,14 +397,25 @@ func (a *withDrawMotionAction) Handle(w http.ResponseWriter, r *http.Request) {
 	decision, ok := getDecisionFromRequest(r)
 	if !ok || decision.Status != voteStatusPending {
 		http.Error(w, http.StatusText(http.StatusPreconditionFailed), http.StatusPreconditionFailed)
+
 		return
 	}
+
 	voter, ok := getVoterFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusPreconditionFailed), http.StatusPreconditionFailed)
+
 		return
 	}
-	templates := []string{"withdraw_motion_form.html", "header.html", "footer.html", "motion_fragments.html", "page_fragments.html"}
+
+	templates := []string{
+		"withdraw_motion_form.html",
+		"header.html",
+		"footer.html",
+		"motion_fragments.html",
+		"page_fragments.html",
+	}
+
 	var templateContext struct {
 		PageTitle string
 		Decision  *DecisionForDisplay
@@ -343,9 +427,11 @@ func (a *withDrawMotionAction) Handle(w http.ResponseWriter, r *http.Request) {
 	case http.MethodPost:
 		decision.Status = voteStatusWithdrawn
 		decision.Modified = time.Now().UTC()
+
 		if err := decision.UpdateStatus(); err != nil {
 			log.Errorf("withdrawing motion failed: %v", err)
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 			return
 		}
 
@@ -372,12 +458,14 @@ func (h *newMotionHandler) Handle(w http.ResponseWriter, r *http.Request) {
 	}
 
 	templates := []string{"create_motion_form.html", "page_fragments.html", "header.html", "footer.html"}
+
 	var templateContext struct {
 		Form      NewDecisionForm
 		PageTitle string
 		Voter     *Voter
 		Flashes   interface{}
 	}
+
 	switch r.Method {
 	case http.MethodPost:
 		form := NewDecisionForm{
@@ -393,10 +481,11 @@ func (h *newMotionHandler) Handle(w http.ResponseWriter, r *http.Request) {
 			renderTemplate(w, r, templates, templateContext)
 		} else {
 			data.Proposed = time.Now().UTC()
-			data.ProponentId = voter.Id
+			data.ProponentID = voter.ID
 			if err := data.Create(); err != nil {
 				log.Errorf("saving motion failed: %v", err)
 				http.Error(w, "Saving motion failed", http.StatusInternalServerError)
+
 				return
 			}
 
@@ -426,20 +515,26 @@ func (a editMotionAction) Handle(w http.ResponseWriter, r *http.Request) {
 	decision, ok := getDecisionFromRequest(r)
 	if !ok || decision.Status != voteStatusPending {
 		http.Error(w, http.StatusText(http.StatusPreconditionFailed), http.StatusPreconditionFailed)
+
 		return
 	}
+
 	voter, ok := getVoterFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusPreconditionFailed), http.StatusPreconditionFailed)
+
 		return
 	}
+
 	templates := []string{"edit_motion_form.html", "page_fragments.html", "header.html", "footer.html"}
+
 	var templateContext struct {
 		Form      EditDecisionForm
 		PageTitle string
 		Voter     *Voter
 		Flashes   interface{}
 	}
+
 	switch r.Method {
 	case http.MethodPost:
 		form := EditDecisionForm{
@@ -459,6 +554,7 @@ func (a editMotionAction) Handle(w http.ResponseWriter, r *http.Request) {
 			if err := data.Update(); err != nil {
 				log.Errorf("updating motion failed: %v", err)
 				http.Error(w, "Updating the motion failed.", http.StatusInternalServerError)
+
 				return
 			}
 
@@ -468,6 +564,7 @@ func (a editMotionAction) Handle(w http.ResponseWriter, r *http.Request) {
 
 			http.Redirect(w, r, "/motions/", http.StatusMovedPermanently)
 		}
+
 		return
 	default:
 		templateContext.Voter = voter
@@ -494,35 +591,43 @@ func (h motionsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	switch {
 	case subURL == "":
 		authenticateRequest(w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, false)), motionListHandler)
+
 		return
 	case subURL == "/newmotion/":
 		handler := &newMotionHandler{}
 		authenticateRequest(
 			w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, true)),
 			handler.Handle)
+
 		return
 	case strings.Count(subURL, "/") == 1:
 		parts := strings.Split(subURL, "/")
 		motionTag := parts[0]
+
 		action, ok := motionActionMap[parts[1]]
 		if !ok {
 			http.NotFound(w, r)
+
 			return
 		}
+
 		authenticateRequest(
 			w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, action.NeedsAuth())),
 			func(w http.ResponseWriter, r *http.Request) {
 				singleDecisionHandler(w, r, motionTag, action.Handle)
 			})
+
 		return
 	case strings.Count(subURL, "/") == 0:
 		authenticateRequest(w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, false)),
 			func(w http.ResponseWriter, r *http.Request) {
 				singleDecisionHandler(w, r, subURL, motionHandler)
 			})
+
 		return
 	default:
 		http.NotFound(w, r)
+
 		return
 	}
 }
@@ -536,26 +641,33 @@ func (h *directVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 	decision, ok := getDecisionFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	voter, ok := getVoterFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	vote, ok := getVoteFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	switch r.Method {
 	case http.MethodPost:
 		voteResult := &Vote{
-			VoterId: voter.Id, Vote: vote, DecisionId: decision.Id, Voted: time.Now().UTC(),
+			VoterID: voter.ID, Vote: vote, DecisionID: decision.ID, Voted: time.Now().UTC(),
 			Notes: fmt.Sprintf("Direct Vote\n\n%s", getPEMClientCert(r))}
 		if err := voteResult.Save(); err != nil {
 			log.Errorf("Problem saving vote: %v", err)
 			http.Error(w, "Problem saving vote", http.StatusInternalServerError)
+
 			return
 		}
 
@@ -565,7 +677,14 @@ func (h *directVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 
 		http.Redirect(w, r, "/motions/", http.StatusMovedPermanently)
 	default:
-		templates := []string{"direct_vote_form.html", "header.html", "footer.html", "motion_fragments.html", "page_fragments.html"}
+		templates := []string{
+			"direct_vote_form.html",
+			"header.html",
+			"footer.html",
+			"motion_fragments.html",
+			"page_fragments.html",
+		}
+
 		var templateContext struct {
 			Decision   *DecisionForDisplay
 			VoteChoice VoteChoice
@@ -573,9 +692,11 @@ func (h *directVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 			Flashes    interface{}
 			Voter      *Voter
 		}
+
 		templateContext.Decision = decision
 		templateContext.VoteChoice = vote
 		templateContext.Voter = voter
+
 		renderTemplate(w, r, templates, templateContext)
 	}
 }
@@ -588,10 +709,12 @@ type proxyVoteHandler struct {
 func getPEMClientCert(r *http.Request) string {
 	clientCertPEM := bytes.NewBufferString("")
 	authenticatedCertificate := r.Context().Value(ctxAuthenticatedCert).(*x509.Certificate)
+
 	err := pem.Encode(clientCertPEM, &pem.Block{Type: "CERTIFICATE", Bytes: authenticatedCertificate.Raw})
 	if err != nil {
 		log.Errorf("error encoding client certificate: %v", err)
 	}
+
 	return clientCertPEM.String()
 }
 
@@ -599,14 +722,25 @@ func (h *proxyVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 	decision, ok := getDecisionFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
+
 	proxy, ok := getVoterFromRequest(r)
 	if !ok {
 		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 		return
 	}
-	templates := []string{"proxy_vote_form.html", "header.html", "footer.html", "motion_fragments.html", "page_fragments.html"}
+
+	templates := []string{
+		"proxy_vote_form.html",
+		"header.html",
+		"footer.html",
+		"motion_fragments.html",
+		"page_fragments.html",
+	}
+
 	var templateContext struct {
 		Form      ProxyVoteForm
 		Decision  *DecisionForDisplay
@@ -615,7 +749,9 @@ func (h *proxyVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 		Flashes   interface{}
 		Voter     *Voter
 	}
+
 	templateContext.Voter = proxy
+
 	switch r.Method {
 	case http.MethodPost:
 		form := ProxyVoteForm{
@@ -627,15 +763,19 @@ func (h *proxyVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 		if valid, voter, data, justification := form.Validate(); !valid {
 			templateContext.Form = form
 			templateContext.Decision = decision
-			if voters, err := GetVotersForProxy(proxy); err != nil {
+
+			voters, err := GetVotersForProxy(proxy)
+			if err != nil {
 				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 				return
-			} else {
-				templateContext.Voters = voters
 			}
+
+			templateContext.Voters = voters
+
 			renderTemplate(w, r, templates, templateContext)
 		} else {
-			data.DecisionId = decision.Id
+			data.DecisionID = decision.ID
 			data.Voted = time.Now().UTC()
 			data.Notes = fmt.Sprintf(
 				"Proxy-Vote by %s\n\n%s\n\n%s",
@@ -644,6 +784,7 @@ func (h *proxyVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 			if err := data.Save(); err != nil {
 				log.Errorf("Error saving vote: %s", err)
 				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 				return
 			}
 
@@ -653,16 +794,21 @@ func (h *proxyVoteHandler) Handle(w http.ResponseWriter, r *http.Request) {
 
 			http.Redirect(w, r, "/motions/", http.StatusMovedPermanently)
 		}
+
 		return
 	default:
 		templateContext.Form = ProxyVoteForm{}
 		templateContext.Decision = decision
-		if voters, err := GetVotersForProxy(proxy); err != nil {
+
+		voters, err := GetVotersForProxy(proxy)
+		if err != nil {
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
 			return
-		} else {
-			templateContext.Voters = voters
 		}
+
+		templateContext.Voters = voters
+
 		renderTemplate(w, r, templates, templateContext)
 	}
 }
@@ -674,24 +820,33 @@ func (h *decisionVoteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 	case strings.HasPrefix(r.URL.Path, "/proxy/"):
 		motionTag := r.URL.Path[len("/proxy/"):]
 		handler := &proxyVoteHandler{}
+
 		authenticateRequest(
 			w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, true)),
 			func(w http.ResponseWriter, r *http.Request) {
 				singleDecisionHandler(w, r, motionTag, handler.Handle)
 			})
 	case strings.HasPrefix(r.URL.Path, "/vote/"):
+		const expectedParts = 2
+
 		parts := strings.Split(r.URL.Path[len("/vote/"):], "/")
-		if len(parts) != 2 {
+		if len(parts) != expectedParts {
 			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+
 			return
 		}
+
 		motionTag := parts[0]
+
 		voteValue, ok := VoteValues[parts[1]]
 		if !ok {
 			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+
 			return
 		}
+
 		handler := &directVoteHandler{}
+
 		authenticateRequest(
 			w, r.WithContext(context.WithValue(r.Context(), ctxNeedsAuth, true)),
 			func(w http.ResponseWriter, r *http.Request) {
@@ -699,6 +854,7 @@ func (h *decisionVoteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
 					w, r.WithContext(context.WithValue(r.Context(), ctxVote, voteValue)),
 					motionTag, handler.Handle)
 			})
+
 		return
 	}
 }
@@ -714,8 +870,8 @@ type Config struct {
 	CookieSecret              string `yaml:"cookie_secret"`
 	CsrfKey                   string `yaml:"csrf_key"`
 	BaseURL                   string `yaml:"base_url"`
-	HttpAddress               string `yaml:"http_address"`
-	HttpsAddress              string `yaml:"https_address"`
+	HTTPAddress               string `yaml:"http_address"`
+	HTTPSAddress              string `yaml:"https_address"`
 	MailServer                struct {
 		Host string `yaml:"host"`
 		Port int    `yaml:"port"`
@@ -727,15 +883,17 @@ func readConfig() {
 	if err != nil {
 		log.Panicf("Opening configuration file failed: %v", err)
 	}
+
 	if err := yaml.Unmarshal(source, &config); err != nil {
 		log.Panicf("Loading configuration failed: %v", err)
 	}
 
-	if config.HttpsAddress == "" {
-		config.HttpsAddress = "127.0.0.1:8443"
+	if config.HTTPSAddress == "" {
+		config.HTTPSAddress = "127.0.0.1:8443"
 	}
-	if config.HttpAddress == "" {
-		config.HttpAddress = "127.0.0.1:8080"
+
+	if config.HTTPAddress == "" {
+		config.HTTPAddress = "127.0.0.1:8080"
 	}
 
 	cookieSecret, err := base64.StdEncoding.DecodeString(config.CookieSecret)
@@ -743,17 +901,26 @@ func readConfig() {
 		log.Panicf("Decoding cookie secret failed: %v", err)
 		panic(err)
 	}
-	if len(cookieSecret) < 32 {
-		log.Panic("Cookie secret is less than 32 bytes long")
+
+	if len(cookieSecret) < cookieSecretMinLen {
+		log.Panicf("Cookie secret is less than %d bytes long", cookieSecretMinLen)
 	}
+
 	csrfKey, err = base64.StdEncoding.DecodeString(config.CsrfKey)
 	if err != nil {
 		log.Panicf("Decoding csrf key failed: %v", err)
 	}
-	if len(csrfKey) != 32 {
-		log.Panicf("CSRF key must be exactly 32 bytes long but is %d bytes long", len(csrfKey))
+
+	if len(csrfKey) != csrfKeyLength {
+		log.Panicf(
+			"CSRF key must be exactly %d bytes long but is %d bytes long",
+			csrfKeyLength,
+			len(csrfKey),
+		)
 	}
+
 	store = sessions.NewCookieStore(cookieSecret)
+
 	log.Info("Read configuration")
 }
 
@@ -762,6 +929,7 @@ func setupDbConfig(ctx context.Context) {
 	if err != nil {
 		log.Panicf("Opening database failed: %v", err)
 	}
+
 	db = NewDB(database)
 
 	go func() {
@@ -812,6 +980,7 @@ func setupTLSConfig() (tlsConfig *tls.Config) {
 	if err != nil {
 		log.Panicf("Error reading client certificate CAs %v", err)
 	}
+
 	caCertPool := x509.NewCertPool()
 	if !caCertPool.AppendCertsFromPEM(caCert) {
 		log.Panic("could not initialize client CA certificate pool")
@@ -819,9 +988,11 @@ func setupTLSConfig() (tlsConfig *tls.Config) {
 
 	// setup HTTPS server
 	tlsConfig = &tls.Config{
+		MinVersion: tls.VersionTLS12,
 		ClientCAs:  caCertPool,
 		ClientAuth: tls.VerifyClientCertIfGiven,
 	}
+
 	return
 }
 
@@ -835,23 +1006,26 @@ func main() {
 	flag.Parse()
 
 	var stopAll func()
+
 	executionContext, stopAll := context.WithCancel(context.Background())
+
 	readConfig()
 	setupDbConfig(executionContext)
 	setupNotifications(executionContext)
 	setupJobs(executionContext)
 	setupHandlers()
+
 	tlsConfig := setupTLSConfig()
 
 	defer stopAll()
 
 	server := &http.Server{
-		Addr:              config.HttpsAddress,
+		Addr:              config.HTTPSAddress,
 		TLSConfig:         tlsConfig,
-		IdleTimeout:       time.Second * 120,
-		ReadHeaderTimeout: time.Second * 10,
-		ReadTimeout:       time.Second * 20,
-		WriteTimeout:      time.Second * 60,
+		IdleTimeout:       time.Second * httpIdleTimeout,
+		ReadHeaderTimeout: time.Second * httpReadHeaderTimeout,
+		ReadTimeout:       time.Second * httpReadTimeout,
+		WriteTimeout:      time.Second * httpWriteTimeout,
 	}
 
 	server.Handler = csrf.Protect(csrfKey)(http.DefaultServeMux)
@@ -859,24 +1033,27 @@ func main() {
 	log.Infof("Launching application on https://%s/", server.Addr)
 
 	errs := make(chan error, 1)
+
 	go func() {
 		httpRedirector := &http.Server{
-			Addr:              config.HttpAddress,
+			Addr:              config.HTTPAddress,
 			Handler:           http.RedirectHandler(config.BaseURL, http.StatusMovedPermanently),
-			IdleTimeout:       time.Second * 5,
-			ReadHeaderTimeout: time.Second * 10,
-			ReadTimeout:       time.Second * 10,
-			WriteTimeout:      time.Second * 60,
+			IdleTimeout:       time.Second * httpIdleTimeout,
+			ReadHeaderTimeout: time.Second * httpReadHeaderTimeout,
+			ReadTimeout:       time.Second * httpReadTimeout,
+			WriteTimeout:      time.Second * httpWriteTimeout,
 		}
 		if err := httpRedirector.ListenAndServe(); err != nil {
 			errs <- err
 		}
+
 		close(errs)
 	}()
 
 	if err := server.ListenAndServeTLS(config.ServerCert, config.ServerKey); err != nil {
 		log.Panicf("ListenAndServerTLS failed: %v", err)
 	}
+
 	if err := <-errs; err != nil {
 		log.Panicf("ListenAndServe failed: %v", err)
 	}

boardvoting/main.go

@@ -1,18 +1,20 @@
 /*
-   Copyright 2017-2019 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
+// Assets for the CAcert board voting software.
 package boardvoting
 
 //go:generate go-bindata -pkg $GOPACKAGE -o assets.go ./migrations/... ./static/... ./templates/...
@@ -29,8 +31,11 @@ import (
 	"time"
 )
 
+const defaultFileMode = 0400
+
 var defaultFileTimestamp = time.Now()
 
+// Simulated asset file system.
 type AssetFS struct {
 	Asset     func(path string) ([]byte, error)
 	AssetDir  func(path string) ([]string, error)
@@ -46,16 +51,19 @@ type FakeFile struct {
 
 func (f *FakeFile) Name() string {
 	_, name := filepath.Split(f.Path)
+
 	return name
 }
 
 func (f *FakeFile) Size() int64 { return f.Len }
 
 func (f *FakeFile) Mode() os.FileMode {
-	mode := os.FileMode(0644)
+	mode := os.FileMode(defaultFileMode)
+
 	if f.Dir {
 		return mode | os.ModeDir
 	}
+
 	return mode
 }
 
@@ -73,6 +81,7 @@ func NewAssetFile(name string, content []byte, timestamp time.Time) *AssetFile {
 	if timestamp.IsZero() {
 		timestamp = defaultFileTimestamp
 	}
+
 	return &AssetFile{
 		bytes.NewReader(content),
 		ioutil.NopCloser(nil),
@@ -80,7 +89,7 @@ func NewAssetFile(name string, content []byte, timestamp time.Time) *AssetFile {
 	}
 }
 
-func (f *AssetFile) Readdir(count int) ([]os.FileInfo, error) {
+func (f *AssetFile) Readdir(int) ([]os.FileInfo, error) {
 	return nil, errors.New("not a directory")
 }
 
@@ -102,24 +111,31 @@ func (f *AssetDirectory) Readdir(count int) ([]os.FileInfo, error) {
 	if count <= 0 {
 		return f.Children, nil
 	}
+
 	if f.ChildrenRead+count > len(f.Children) {
 		count = len(f.Children) - f.ChildrenRead
 	}
+
 	rv := f.Children[f.ChildrenRead : f.ChildrenRead+count]
 	f.ChildrenRead += count
+
 	return rv, nil
 }
 
+// Simulate os.Stat for a simulated asset directory.
 func (f *AssetDirectory) Stat() (os.FileInfo, error) {
 	return f, nil
 }
 
+// Return a new asset directory.
 func NewAssetDirectory(name string, children []string, fs *AssetFS) *AssetDirectory {
 	fileInfos := make([]os.FileInfo, 0, len(children))
+
 	for _, child := range children {
 		_, err := fs.AssetDir(filepath.Join(name, child))
 		fileInfos = append(fileInfos, &FakeFile{child, err == nil, 0, time.Time{}})
 	}
+
 	return &AssetDirectory{
 		AssetFile{
 			bytes.NewReader(nil),
@@ -130,29 +146,37 @@ func NewAssetDirectory(name string, children []string, fs *AssetFS) *AssetDirect
 		fileInfos}
 }
 
+// Open named simulated file.
 func (f *AssetFS) Open(name string) (http.File, error) {
 	if len(name) > 0 && name[0] == '/' {
 		name = name[1:]
 	}
+
 	if b, err := f.Asset(name); err == nil {
 		timestamp := defaultFileTimestamp
+
 		if f.AssetInfo != nil {
 			if info, err := f.AssetInfo(name); err == nil {
 				timestamp = info.ModTime()
 			}
 		}
+
 		return NewAssetFile(name, b, timestamp), nil
 	}
-	if children, err := f.AssetDir(name); err == nil {
+
+	children, err := f.AssetDir(name)
+	if err == nil {
 		return NewAssetDirectory(name, children, f), nil
-	} else {
-		if strings.Contains(err.Error(), "not found") {
-			return nil, os.ErrNotExist
-		}
-		return nil, err
 	}
+
+	if strings.Contains(err.Error(), "not found") {
+		return nil, os.ErrNotExist
+	}
+
+	return nil, err
 }
 
+// Get the simulated asset filesystem initialized with generated values.
 func GetAssetFS() *AssetFS {
 	return &AssetFS{Asset: Asset, AssetDir: AssetDir, AssetInfo: AssetInfo}
 }

db/migrations_embedded.go

@@ -1,23 +1,24 @@
 /*
-   Copyright 2017-2019 Jan Dittberner
+Copyright 2017-2020 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
 package db
 
 import (
+	migrate "github.com/rubenv/sql-migrate"
+
 	"git.cacert.org/cacert-boardvoting/boardvoting"
-	"github.com/rubenv/sql-migrate"
 )
 
 func Migrations() migrate.MigrationSource {

forms.go

@@ -1,18 +1,19 @@
 /*
-   Copyright 2017-2019 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
 package main
 
 import (
@@ -22,11 +23,24 @@ import (
 	"time"
 )
 
+const (
+	minimumContentLen = 3
+	minimumTitleLen   = 3
+)
+
+const (
+	hoursInADay  = 24
+	dueThreeDays = 3
+	dueOneWeek   = 7
+	dueTwoWeeks  = 14
+	dueFourWeeks = 28
+)
+
 var validDueDurations = map[string]time.Duration{
-	"+3 days":  time.Hour * 24 * 3,
-	"+7 days":  time.Hour * 24 * 7,
-	"+14 days": time.Hour * 24 * 14,
-	"+28 days": time.Hour * 24 * 28,
+	"+3 days":  time.Hour * hoursInADay * dueThreeDays,
+	"+7 days":  time.Hour * hoursInADay * dueOneWeek,
+	"+14 days": time.Hour * hoursInADay * dueTwoWeeks,
+	"+28 days": time.Hour * hoursInADay * dueFourWeeks,
 }
 
 type NewDecisionForm struct {
@@ -43,13 +57,13 @@ func (f *NewDecisionForm) Validate() (bool, *Decision) {
 	data := &Decision{}
 
 	data.Title = strings.TrimSpace(f.Title)
-	if len(data.Title) < 3 {
-		f.Errors["Title"] = "Please enter at least 3 characters for Title."
+	if len(data.Title) < minimumTitleLen {
+		f.Errors["Title"] = fmt.Sprintf("Please enter at least %d characters for Title.", minimumTitleLen)
 	}
 
 	data.Content = strings.TrimSpace(f.Content)
-	if len(strings.Fields(data.Content)) < 3 {
-		f.Errors["Content"] = "Please enter at least 3 words as Text."
+	if len(strings.Fields(data.Content)) < minimumContentLen {
+		f.Errors["Content"] = fmt.Sprintf("Please enter at least %d words as Text.", minimumContentLen)
 	}
 
 	if voteType, err := strconv.ParseUint(f.VoteType, 10, 8); err != nil || (voteType != 0 && voteType != 1) {
@@ -83,13 +97,13 @@ func (f *EditDecisionForm) Validate() (bool, *Decision) {
 	data := f.Decision
 
 	data.Title = strings.TrimSpace(f.Title)
-	if len(data.Title) < 3 {
-		f.Errors["Title"] = "Please enter at least 3 characters for Title."
+	if len(data.Title) < minimumTitleLen {
+		f.Errors["Title"] = fmt.Sprintf("Please enter at least %d characters for Title.", minimumTitleLen)
 	}
 
 	data.Content = strings.TrimSpace(f.Content)
-	if len(strings.Fields(data.Content)) < 3 {
-		f.Errors["Content"] = "Please enter at least 3 words as Text."
+	if len(strings.Fields(data.Content)) < minimumContentLen {
+		f.Errors["Content"] = fmt.Sprintf("Please enter at least %d words as Text.", minimumContentLen)
 	}
 
 	if voteType, err := strconv.ParseUint(f.VoteType, 10, 8); err != nil || (voteType != 0 && voteType != 1) {
@@ -118,27 +132,34 @@ type ProxyVoteForm struct {
 func (f *ProxyVoteForm) Validate() (bool, *Voter, *Vote, string) {
 	f.Errors = make(map[string]string)
 
+	const minimumJustificationLen = 3
+
+	var (
+		voter         *Voter
+		err           error
+		voterID, vote int64
+	)
+
 	data := &Vote{}
 
-	var voter *Voter
-	if voterId, err := strconv.ParseInt(f.Voter, 10, 64); err != nil {
-		f.Errors["Voter"] = fmt.Sprint("Please choose a valid voter.", err)
-	} else if voter, err = GetVoterById(voterId); err != nil {
-		f.Errors["Voter"] = fmt.Sprint("Please choose a valid voter.", err)
+	if voterID, err = strconv.ParseInt(f.Voter, 10, 64); err != nil {
+		f.Errors["Voter"] = fmt.Sprintf("Please choose a valid voter: %v.", err)
+	} else if voter, err = GetVoterByID(voterID); err != nil {
+		f.Errors["Voter"] = fmt.Sprintf("Please choose a valid voter: %v.", err)
 	} else {
-		data.VoterId = voter.Id
+		data.VoterID = voter.ID
 	}
 
-	if vote, err := strconv.ParseInt(f.Vote, 10, 8); err != nil {
-		f.Errors["Vote"] = fmt.Sprint("Please choose a valid vote.", err)
+	if vote, err = strconv.ParseInt(f.Vote, 10, 8); err != nil {
+		f.Errors["Vote"] = fmt.Sprintf("Please choose a valid vote: %v.", err)
 	} else if voteChoice, ok := VoteChoices[vote]; !ok {
-		f.Errors["Vote"] = fmt.Sprint("Please choose a valid vote.")
+		f.Errors["Vote"] = "Please choose a valid vote."
 	} else {
 		data.Vote = voteChoice
 	}
 
 	justification := strings.TrimSpace(f.Justification)
-	if len(justification) < 3 {
+	if len(justification) < minimumJustificationLen {
 		f.Errors["Justification"] = "Please enter at least 3 characters for justification."
 	}
 

go.mod

@@ -4,23 +4,26 @@ go 1.14
 
 require (
 	github.com/Masterminds/goutils v1.1.0 // indirect
-	github.com/Masterminds/semver v1.4.2 // indirect
-	github.com/Masterminds/sprig v2.20.0+incompatible
+	github.com/Masterminds/semver v1.5.0 // indirect
+	github.com/Masterminds/sprig v2.22.0+incompatible
 	github.com/gobuffalo/packr v1.30.1 // indirect
-	github.com/google/uuid v1.1.1 // indirect
-	github.com/gorilla/csrf v1.6.0
-	github.com/gorilla/sessions v1.2.0
-	github.com/huandu/xstrings v1.2.0 // indirect
-	github.com/imdario/mergo v0.3.7 // indirect
+	github.com/google/uuid v1.1.4 // indirect
+	github.com/gorilla/csrf v1.7.0
+	github.com/gorilla/sessions v1.2.1
+	github.com/huandu/xstrings v1.3.2 // indirect
+	github.com/imdario/mergo v0.3.11 // indirect
 	github.com/jmoiron/sqlx v1.2.0
-	github.com/mattn/go-sqlite3 v1.11.0
-	github.com/rubenv/sql-migrate v0.0.0-20190717103323-87ce952f7079
-	github.com/sirupsen/logrus v1.4.2
+	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
+	github.com/mattn/go-sqlite3 v1.14.6
+	github.com/mitchellh/copystructure v1.0.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.1 // indirect
+	github.com/rubenv/sql-migrate v0.0.0-20200616145509-8d140a17f351
+	github.com/sirupsen/logrus v1.7.0
 	github.com/ziutek/mymysql v1.5.4 // indirect
-	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4 // indirect
-	google.golang.org/appengine v1.6.1 // indirect
+	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
+	golang.org/x/sys v0.0.0-20210108172913-0df2131ae363 // indirect
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 	gopkg.in/gorp.v1 v1.7.2 // indirect
-	gopkg.in/yaml.v2 v2.2.2
+	gopkg.in/yaml.v2 v2.4.0
 )

go.sum

@@ -1,52 +1,191 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg=
 github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver v1.4.2 h1:WBLTQ37jOCzSLtXNdoo8bNM8876KhNqOKvrlGITgsTc=
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jobs.go

@@ -1,23 +1,25 @@
 /*
-   Copyright 2017-2019 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
 package main
 
 import (
-	log "github.com/sirupsen/logrus"
 	"time"
+
+	log "github.com/sirupsen/logrus"
 )
 
 type Job interface {
@@ -29,30 +31,34 @@ type Job interface {
 type jobIdentifier int
 
 const (
-	JobIdCloseDecisions jobIdentifier = iota
-	JobIdRemindVotersJob
+	JobIDCloseDecisions jobIdentifier = iota
+	JobIDRemindVotersJob
 )
 
 var rescheduleChannel = make(chan jobIdentifier, 1)
 
 func JobScheduler(quitChannel chan int) {
 	var jobs = map[jobIdentifier]Job{
-		JobIdCloseDecisions:  NewCloseDecisionsJob(),
-		JobIdRemindVotersJob: NewRemindVotersJob(),
+		JobIDCloseDecisions:  NewCloseDecisionsJob(),
+		JobIDRemindVotersJob: NewRemindVotersJob(),
 	}
+
 	log.Info("started job scheduler")
 
 	for {
 		select {
-		case jobId := <-rescheduleChannel:
-			job := jobs[jobId]
+		case jobID := <-rescheduleChannel:
+			job := jobs[jobID]
+
 			log.Infof("reschedule job %s", job)
 			job.Schedule()
 		case <-quitChannel:
 			for _, job := range jobs {
 				job.Stop()
 			}
+
 			log.Info("stop job scheduler")
+
 			return
 		}
 	}
@@ -65,27 +71,35 @@ type CloseDecisionsJob struct {
 func NewCloseDecisionsJob() *CloseDecisionsJob {
 	job := &CloseDecisionsJob{}
 	job.Schedule()
+
 	return job
 }
 
 func (j *CloseDecisionsJob) Schedule() {
-	var nextDue *time.Time
-	nextDue, err := GetNextPendingDecisionDue()
+	var (
+		nextDue *time.Time
+		err     error
+	)
+
+	nextDue, err = GetNextPendingDecisionDue()
 	if err != nil {
 		log.Error("Could not get next pending due date")
+
 		if j.timer != nil {
 			j.timer.Stop()
 			j.timer = nil
 		}
+
 		return
 	}
+
 	if nextDue == nil {
 		log.Info("no next planned execution of CloseDecisionsJob")
 		j.Stop()
 	} else {
 		nextDue := nextDue.Add(time.Second)
 		log.Infof("scheduling CloseDecisionsJob for %s", nextDue)
-		when := nextDue.Sub(time.Now())
+		when := time.Until(nextDue)
 		if j.timer != nil {
 			j.timer.Reset(when)
 		} else {
@@ -103,11 +117,13 @@ func (j *CloseDecisionsJob) Stop() {
 
 func (j *CloseDecisionsJob) Run() {
 	log.Debug("running CloseDecisionsJob")
+
 	err := CloseDecisions()
 	if err != nil {
 		log.Errorf("closing decisions %v", err)
 	}
-	rescheduleChannel <- JobIdCloseDecisions
+
+	rescheduleChannel <- JobIDCloseDecisions
 }
 
 func (j *CloseDecisionsJob) String() string {
@@ -121,14 +137,18 @@ type RemindVotersJob struct {
 func NewRemindVotersJob() *RemindVotersJob {
 	job := &RemindVotersJob{}
 	job.Schedule()
+
 	return job
 }
 
 func (j *RemindVotersJob) Schedule() {
 	year, month, day := time.Now().UTC().Date()
 	nextExecution := time.Date(year, month, day, 0, 0, 0, 0, time.UTC).AddDate(0, 0, 3)
+
 	log.Infof("scheduling RemindVotersJob for %s", nextExecution)
-	when := nextExecution.Sub(time.Now())
+
+	when := time.Until(nextExecution)
+
 	if j.timer != nil {
 		j.timer.Reset(when)
 	} else {
@@ -145,22 +165,33 @@ func (j *RemindVotersJob) Stop() {
 
 func (j *RemindVotersJob) Run() {
 	log.Info("running RemindVotersJob")
-	defer func() { rescheduleChannel <- JobIdRemindVotersJob }()
 
-	voters, err := GetReminderVoters()
+	defer func() { rescheduleChannel <- JobIDRemindVotersJob }()
+
+	var (
+		voters []Voter
+		err    error
+	)
+
+	voters, err = GetReminderVoters()
 	if err != nil {
 		log.Errorf("problem getting voters %v", err)
+
 		return
 	}
 
-	for _, voter := range *voters {
-		decisions, err := FindUnvotedDecisionsForVoter(&voter)
+	var decisions []Decision
+
+	for i := range voters {
+		decisions, err = FindUnVotedDecisionsForVoter(&voters[i])
 		if err != nil {
 			log.Errorf("problem getting unvoted decisions: %v", err)
+
 			return
 		}
-		if len(*decisions) > 0 {
-			NotifyMailChannel <- &RemindVoterNotification{voter: voter, decisions: *decisions}
+
+		if len(decisions) > 0 {
+			NotifyMailChannel <- &RemindVoterNotification{voter: voters[i], decisions: decisions}
 		}
 	}
 }

models.go

@@ -1,51 +1,54 @@
 /*
-   Copyright 2017-2020 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
 package main
 
 import (
 	"database/sql"
+	"errors"
 	"fmt"
-	"github.com/jmoiron/sqlx"
-	"github.com/rubenv/sql-migrate"
 	"time"
 
-	migrations "git.cacert.org/cacert-boardvoting/db"
+	"github.com/jmoiron/sqlx"
+	migrate "github.com/rubenv/sql-migrate"
 	log "github.com/sirupsen/logrus"
+
+	migrations "git.cacert.org/cacert-boardvoting/db"
 )
 
 type sqlKey int
 
 const (
 	sqlLoadDecisions sqlKey = iota
-	sqlLoadUnvotedDecisions
+	sqlLoadUnVotedDecisions
 	sqlLoadDecisionByTag
-	sqlLoadDecisionById
+	sqlLoadDecisionByID
 	sqlLoadVoteCountsForDecision
 	sqlLoadVotesForDecision
 	sqlLoadEnabledVoterByEmail
 	sqlCountOlderThanDecision
-	sqlCountOlderThanUnvotedDecision
+	sqlCountOlderThanUnVotedDecision
 	sqlCreateDecision
 	sqlUpdateDecision
 	sqlUpdateDecisionStatus
 	sqlSelectClosableDecisions
 	sqlGetNextPendingDecisionDue
 	sqlGetReminderVoters
-	sqlFindUnvotedDecisionsForVoter
-	sqlGetEnabledVoterById
+	sqlFindUnVotedDecisionsForVoter
+	sqlGetEnabledVoterByID
 	sqlCreateVote
 	sqlLoadVote
 	sqlGetVotersForProxy
@@ -59,7 +62,7 @@ FROM   decisions
 JOIN   voters ON decisions.proponent=voters.id
 ORDER BY proposed DESC
 LIMIT 10 OFFSET 10 * $1`,
-	sqlLoadUnvotedDecisions: `
+	sqlLoadUnVotedDecisions: `
 SELECT decisions.id, decisions.tag, decisions.proponent, voters.name AS proposer, decisions.proposed, decisions.title,
        decisions.content, decisions.votetype, decisions.status, decisions.due, decisions.modified
 FROM   decisions
@@ -73,7 +76,7 @@ SELECT decisions.id, decisions.tag, decisions.proponent, voters.name AS proposer
 FROM   decisions
 JOIN   voters ON decisions.proponent=voters.id
 WHERE  decisions.tag=$1;`,
-	sqlLoadDecisionById: `
+	sqlLoadDecisionByID: `
 SELECT decisions.id, decisions.tag, decisions.proponent, decisions.proposed, decisions.title, decisions.content,
        decisions.votetype, decisions.status, decisions.due, decisions.modified
 FROM   decisions
@@ -91,14 +94,14 @@ FROM   voters
 JOIN   emails ON voters.id=emails.voter
 JOIN   user_roles ON user_roles.voter_id=voters.id
 WHERE  emails.address=$1 AND user_roles.role='VOTER'`,
-	sqlGetEnabledVoterById: `
+	sqlGetEnabledVoterByID: `
 SELECT voters.id, voters.name, voters.reminder
 FROM   voters
 JOIN   user_roles ON user_roles.voter_id=voters.id
 WHERE  user_roles.role='VOTER' AND voters.id=$1`,
 	sqlCountOlderThanDecision: `
 SELECT COUNT(*) > 0 FROM decisions WHERE proposed < $1`,
-	sqlCountOlderThanUnvotedDecision: `
+	sqlCountOlderThanUnVotedDecision: `
 SELECT COUNT(*) > 0 FROM decisions
 WHERE  proposed < $1 AND status=0 AND id NOT IN (SELECT decision FROM votes WHERE votes.voter=$2)`,
 	sqlCreateDecision: `
@@ -134,7 +137,7 @@ SELECT voters.id, voters.name, voters.reminder
 FROM   voters
 JOIN   user_roles ON user_roles.voter_id=voters.id
 WHERE  user_roles.role='VOTER' AND reminder!='' AND reminder IS NOT NULL`,
-	sqlFindUnvotedDecisionsForVoter: `
+	sqlFindUnVotedDecisionsForVoter: `
 SELECT tag, title, votetype, due
 FROM   decisions
 WHERE  status = 0 AND id NOT IN (SELECT decision FROM votes WHERE voter = $1)
@@ -152,9 +155,9 @@ type VoteType uint8
 type VoteStatus int8
 
 type Decision struct {
-	Id          int64
+	ID          int64 `db:"id"`
 	Proposed    time.Time
-	ProponentId int64 `db:"proponent"`
+	ProponentID int64 `db:"proponent"`
 	Title       string
 	Content     string
 	Quorum      int
@@ -167,7 +170,7 @@ type Decision struct {
 }
 
 type Voter struct {
-	Id       int64
+	ID       int64 `db:"id"`
 	Name     string
 	Reminder string // reminder email address
 }
@@ -185,23 +188,36 @@ const (
 	voteTypeVeto   = 1
 )
 
+const (
+	voteTypeLabelMotion  = "motion"
+	voteTypeLabelUnknown = "unknown"
+	voteTypeLabelVeto    = "veto"
+)
+
 func (v VoteType) String() string {
 	switch v {
 	case voteTypeMotion:
-		return "motion"
+		return voteTypeLabelMotion
 	case voteTypeVeto:
-		return "veto"
+		return voteTypeLabelVeto
 	default:
-		return "unknown"
+		return voteTypeLabelUnknown
 	}
 }
 
-func (v VoteType) QuorumAndMajority() (int, int) {
+func (v VoteType) QuorumAndMajority() (int, float32) {
+	const (
+		majorityDefault = 0.99
+		majorityMotion  = 0.50
+		quorumDefault   = 1
+		quorumMotion    = 3
+	)
+
 	switch v {
 	case voteTypeMotion:
-		return 3, 50
+		return quorumMotion, majorityMotion
 	default:
-		return 1, 99
+		return quorumDefault, majorityDefault
 	}
 }
 
@@ -253,36 +269,42 @@ func (v VoteStatus) String() string {
 }
 
 type Vote struct {
-	DecisionId int64 `db:"decision"`
-	VoterId    int64 `db:"voter"`
+	DecisionID int64 `db:"decision"`
+	VoterID    int64 `db:"voter"`
 	Vote       VoteChoice
 	Voted      time.Time
 	Notes      string
 }
 
-type dbHandler struct {
+type DbHandler struct {
 	db *sqlx.DB
 }
 
-var db *dbHandler
+var db *DbHandler
+
+func NewDB(database *sql.DB) *DbHandler {
+	handler := &DbHandler{db: sqlx.NewDb(database, "sqlite3")}
 
-func NewDB(database *sql.DB) *dbHandler {
-	handler := &dbHandler{db: sqlx.NewDb(database, "sqlite3")}
 	_, err := migrate.Exec(database, "sqlite3", migrations.Migrations(), migrate.Up)
 	if err != nil {
 		log.Panicf("running database migration failed: %v", err)
 	}
 
 	failedStatements := make([]string, 0)
+
 	for _, sqlStatement := range sqlStatements {
 		var stmt *sqlx.Stmt
+
 		stmt, err := handler.db.Preparex(sqlStatement)
 		if err != nil {
 			log.Errorf("error parsing statement %s: %s", sqlStatement, err)
 			failedStatements = append(failedStatements, sqlStatement)
 		}
+
+		// nolint:sqlclosecheck
 		_ = stmt.Close()
 	}
+
 	if len(failedStatements) > 0 {
 		log.Panicf("%d statements failed to prepare", len(failedStatements))
 	}
@@ -290,44 +312,48 @@ func NewDB(database *sql.DB) *dbHandler {
 	return handler
 }
 
-func (d *dbHandler) Close() error {
+func (d *DbHandler) Close() error {
 	return d.db.Close()
 }
 
-func (d *dbHandler) getPreparedNamedStatement(statementKey sqlKey) *sqlx.NamedStmt {
+func (d *DbHandler) getPreparedNamedStatement(statementKey sqlKey) *sqlx.NamedStmt {
 	statement, err := d.db.PrepareNamed(sqlStatements[statementKey])
 	if err != nil {
 		log.Panicf("Preparing statement failed: %v", err)
 	}
+
 	return statement
 }
 
-func (d *dbHandler) getPreparedStatement(statementKey sqlKey) *sqlx.Stmt {
+func (d *DbHandler) getPreparedStatement(statementKey sqlKey) *sqlx.Stmt {
 	statement, err := d.db.Preparex(sqlStatements[statementKey])
 	if err != nil {
 		log.Panicf("Preparing statement failed: %v", err)
 	}
+
 	return statement
 }
 
-func (v *Vote) Save() (err error) {
+func (v *Vote) Save() error {
 	insertVoteStmt := db.getPreparedNamedStatement(sqlCreateVote)
+
 	defer func() { _ = insertVoteStmt.Close() }()
 
+	var err error
+
 	if _, err = insertVoteStmt.Exec(v); err != nil {
-		log.Errorf("saving vote failed: %v", err)
-		return
+		return fmt.Errorf("saving vote failed: %w", err)
 	}
 
 	getVoteStmt := db.getPreparedStatement(sqlLoadVote)
+
 	defer func() { _ = getVoteStmt.Close() }()
 
-	if err = getVoteStmt.Get(v, v.DecisionId, v.VoterId); err != nil {
-		log.Errorf("getting inserted vote failed: %v", err)
-		return
+	if err = getVoteStmt.Get(v, v.DecisionID, v.VoterID); err != nil {
+		return fmt.Errorf("getting inserted vote failed: %w", err)
 	}
 
-	return
+	return nil
 }
 
 type VoteSums struct {
@@ -349,18 +375,20 @@ func (v *VoteSums) Percent() int {
 	if totalVotes == 0 {
 		return 0
 	}
+
 	return v.Ayes * 100 / totalVotes
 }
 
-func (v *VoteSums) CalculateResult(quorum int, majority int) (status VoteStatus, reasoning string) {
+func (v *VoteSums) CalculateResult(quorum int, majority float32) (VoteStatus, string) {
 	if v.VoteCount() < quorum {
-		status, reasoning = voteStatusDeclined, fmt.Sprintf("Needed quorum of %d has not been reached.", quorum)
-	} else if (v.Ayes / v.TotalVotes()) < (majority / 100) {
-		status, reasoning = voteStatusDeclined, fmt.Sprintf("Needed majority of %d%% has not been reached.", majority)
-	} else {
-		status, reasoning = voteStatusApproved, "Quorum and majority have been reached"
+		return voteStatusDeclined, fmt.Sprintf("Needed quorum of %d has not been reached.", quorum)
 	}
-	return
+
+	if (float32(v.Ayes) / float32(v.TotalVotes())) < majority {
+		return voteStatusDeclined, fmt.Sprintf("Needed majority of %0.2f%% has not been reached.", majority)
+	}
+
+	return voteStatusApproved, "Quorum and majority have been reached"
 }
 
 type VoteForDisplay struct {
@@ -375,23 +403,26 @@ type DecisionForDisplay struct {
 	Votes []VoteForDisplay
 }
 
-func FindDecisionForDisplayByTag(tag string) (decision *DecisionForDisplay, err error) {
+func FindDecisionForDisplayByTag(tag string) (*DecisionForDisplay, error) {
 	decisionStmt := db.getPreparedStatement(sqlLoadDecisionByTag)
+
 	defer func() { _ = decisionStmt.Close() }()
 
-	decision = &DecisionForDisplay{}
+	decision := &DecisionForDisplay{}
+
+	var err error
+
 	if err = decisionStmt.Get(decision, tag); err != nil {
-		if err == sql.ErrNoRows {
-			decision = nil
-			err = nil
-			return
-		} else {
-			log.Errorf("getting motion %s failed: %v", tag, err)
-			return
+		if errors.Is(err, sql.ErrNoRows) {
+			return nil, nil
 		}
+
+		return nil, fmt.Errorf("getting motion %s failed: %w", tag, err)
 	}
+
 	decision.VoteSums, err = decision.Decision.VoteSums()
-	return
+
+	return decision, err
 }
 
 // FindDecisionsForDisplayOnPage loads a set of decisions from the database.
@@ -399,61 +430,78 @@ func FindDecisionForDisplayByTag(tag string) (decision *DecisionForDisplay, err
 // This function uses OFFSET for pagination which is not a good idea for larger data sets.
 //
 // TODO: migrate to timestamp base pagination
-func FindDecisionsForDisplayOnPage(page int64, unvoted bool, voter *Voter) (decisions []*DecisionForDisplay, err error) {
+func FindDecisionsForDisplayOnPage(page int64, unVoted bool, voter *Voter) ([]*DecisionForDisplay, error) {
 	var decisionsStmt *sqlx.Stmt
-	if unvoted && voter != nil {
-		decisionsStmt = db.getPreparedStatement(sqlLoadUnvotedDecisions)
+
+	if unVoted && voter != nil {
+		decisionsStmt = db.getPreparedStatement(sqlLoadUnVotedDecisions)
 	} else {
 		decisionsStmt = db.getPreparedStatement(sqlLoadDecisions)
 	}
+
 	defer func() { _ = decisionsStmt.Close() }()
 
-	var rows *sqlx.Rows
-	if unvoted && voter != nil {
-		rows, err = decisionsStmt.Queryx(voter.Id, page-1)
+	var (
+		rows      *sqlx.Rows
+		err       error
+		decisions []*DecisionForDisplay
+	)
+
+	if unVoted && voter != nil {
+		rows, err = decisionsStmt.Queryx(voter.ID, page-1)
 	} else {
 		rows, err = decisionsStmt.Queryx(page - 1)
 	}
+
 	if err != nil {
-		log.Errorf("loading motions for page %d failed: %v", page, err)
-		return
+		return nil, fmt.Errorf("loading motions for page %d failed: %w", page, err)
 	}
+
 	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var d DecisionForDisplay
+
 		if err = rows.StructScan(&d); err != nil {
-			log.Errorf("loading motions for page %d failed: %v", page, err)
-			return
+			return nil, fmt.Errorf("loading motions for page %d failed: %w", page, err)
 		}
+
 		d.VoteSums, err = d.Decision.VoteSums()
+
 		if err != nil {
-			return
+			return nil, err
 		}
+
 		decisions = append(decisions, &d)
 	}
-	return
+
+	return decisions, nil
 }
 
-func (d *Decision) VoteSums() (sums *VoteSums, err error) {
+func (d *Decision) VoteSums() (*VoteSums, error) {
 	votesStmt := db.getPreparedStatement(sqlLoadVoteCountsForDecision)
+
 	defer func() { _ = votesStmt.Close() }()
 
-	voteRows, err := votesStmt.Queryx(d.Id)
+	voteRows, err := votesStmt.Queryx(d.ID)
 	if err != nil {
-		log.Errorf("fetching vote sums for motion %s failed: %v", d.Tag, err)
-		return
+		return nil, fmt.Errorf("fetching vote sums for motion %s failed: %w", d.Tag, err)
 	}
+
 	defer func() { _ = voteRows.Close() }()
 
-	sums = &VoteSums{}
+	sums := &VoteSums{}
+
 	for voteRows.Next() {
-		var vote VoteChoice
-		var count int
+		var (
+			vote  VoteChoice
+			count int
+		)
+
 		if err = voteRows.Scan(&vote, &count); err != nil {
-			log.Errorf("fetching vote sums for motion %s failed: %v", d.Tag, err)
-			return
+			return nil, fmt.Errorf("fetching vote sums for motion %s failed: %w", d.Tag, err)
 		}
+
 		switch vote {
 		case voteAye:
 			sums.Ayes = count
@@ -463,79 +511,86 @@ func (d *Decision) VoteSums() (sums *VoteSums, err error) {
 			sums.Abstains = count
 		}
 	}
-	return
+
+	return sums, nil
 }
 
 func (d *DecisionForDisplay) LoadVotes() (err error) {
 	votesStmt := db.getPreparedStatement(sqlLoadVotesForDecision)
+
 	defer func() { _ = votesStmt.Close() }()
 
-	err = votesStmt.Select(&d.Votes, d.Id)
+	err = votesStmt.Select(&d.Votes, d.ID)
 	if err != nil {
 		log.Errorf("selecting votes for motion %s failed: %v", d.Tag, err)
+
 		return
 	}
+
 	return
 }
 
-func (d *Decision) OlderExists(unvoted bool, voter *Voter) (result bool, err error) {
+func (d *Decision) OlderExists(unvoted bool, voter *Voter) (bool, error) {
+	var result bool
+
 	if unvoted && voter != nil {
-		olderStmt := db.getPreparedStatement(sqlCountOlderThanUnvotedDecision)
+		olderStmt := db.getPreparedStatement(sqlCountOlderThanUnVotedDecision)
+
 		defer func() { _ = olderStmt.Close() }()
 
-		if err = olderStmt.Get(&result, d.Proposed, voter.Id); err != nil {
-			log.Errorf("finding older motions than %s failed: %v", d.Tag, err)
-			return
+		if err := olderStmt.Get(&result, d.Proposed, voter.ID); err != nil {
+			return false, fmt.Errorf("finding older motions than %s failed: %w", d.Tag, err)
 		}
 	} else {
 		olderStmt := db.getPreparedStatement(sqlCountOlderThanDecision)
+
 		defer func() { _ = olderStmt.Close() }()
 
-		if err = olderStmt.Get(&result, d.Proposed); err != nil {
-			log.Errorf("finding older motions than %s failed: %v", d.Tag, err)
-			return
+		if err := olderStmt.Get(&result, d.Proposed); err != nil {
+			return false, fmt.Errorf("finding older motions than %s failed: %w", d.Tag, err)
 		}
 	}
 
-	return
+	return result, nil
 }
 
-func (d *Decision) Create() (err error) {
+func (d *Decision) Create() error {
 	insertDecisionStmt := db.getPreparedNamedStatement(sqlCreateDecision)
+
 	defer func() { _ = insertDecisionStmt.Close() }()
 
 	result, err := insertDecisionStmt.Exec(d)
 	if err != nil {
-		log.Errorf("creating motion failed: %v", err)
-		return
+		return fmt.Errorf("creating motion failed: %w", err)
 	}
 
-	lastInsertId, err := result.LastInsertId()
+	decisionID, err := result.LastInsertId()
 	if err != nil {
-		log.Errorf("getting id of inserted motion failed: %v", err)
-		return
+		return fmt.Errorf("getting id of inserted motion failed: %w", err)
 	}
-	rescheduleChannel <- JobIdCloseDecisions
+	rescheduleChannel <- JobIDCloseDecisions
+
+	getDecisionStmt := db.getPreparedStatement(sqlLoadDecisionByID)
 
-	getDecisionStmt := db.getPreparedStatement(sqlLoadDecisionById)
 	defer func() { _ = getDecisionStmt.Close() }()
 
-	err = getDecisionStmt.Get(d, lastInsertId)
+	err = getDecisionStmt.Get(d, decisionID)
 	if err != nil {
-		log.Errorf("getting inserted motion failed: %v", err)
-		return
+		return fmt.Errorf("getting inserted motion failed: %w", err)
 	}
 
-	return
+	return nil
 }
 
-func (d *Decision) LoadWithId() (err error) {
-	getDecisionStmt := db.getPreparedStatement(sqlLoadDecisionById)
+func (d *Decision) LoadWithID() (err error) {
+	getDecisionStmt := db.getPreparedStatement(sqlLoadDecisionByID)
+
 	defer func() { _ = getDecisionStmt.Close() }()
 
-	err = getDecisionStmt.Get(d, d.Id)
+	err = getDecisionStmt.Get(d, d.ID)
 	if err != nil {
 		log.Errorf("loading updated motion failed: %v", err)
+
 		return
 	}
 
@@ -544,93 +599,110 @@ func (d *Decision) LoadWithId() (err error) {
 
 func (d *Decision) Update() (err error) {
 	updateDecisionStmt := db.getPreparedNamedStatement(sqlUpdateDecision)
+
 	defer func() { _ = updateDecisionStmt.Close() }()
 
 	result, err := updateDecisionStmt.Exec(d)
 	if err != nil {
 		log.Errorf("updating motion failed: %v", err)
+
 		return
 	}
+
 	affectedRows, err := result.RowsAffected()
 	if err != nil {
 		log.Error("Problem determining the affected rows")
+
 		return
 	} else if affectedRows != 1 {
 		log.Warningf("wrong number of affected rows: %d (1 expected)", affectedRows)
 	}
-	rescheduleChannel <- JobIdCloseDecisions
 
-	err = d.LoadWithId()
+	rescheduleChannel <- JobIDCloseDecisions
+
+	err = d.LoadWithID()
+
 	return
 }
 
-func (d *Decision) UpdateStatus() (err error) {
+func (d *Decision) UpdateStatus() error {
 	updateStatusStmt := db.getPreparedNamedStatement(sqlUpdateDecisionStatus)
+
 	defer func() { _ = updateStatusStmt.Close() }()
 
 	result, err := updateStatusStmt.Exec(d)
 	if err != nil {
-		log.Errorf("setting motion status failed: %v", err)
-		return
+		return fmt.Errorf("setting motion status failed: %w", err)
 	}
+
 	affectedRows, err := result.RowsAffected()
 	if err != nil {
-		log.Errorf("determining the affected rows failed: %v", err)
-		return
+		return fmt.Errorf("determining the affected rows failed: %w", err)
 	} else if affectedRows != 1 {
 		log.Warningf("wrong number of affected rows: %d (1 expected)", affectedRows)
 	}
-	rescheduleChannel <- JobIdCloseDecisions
 
-	err = d.LoadWithId()
-	return
+	rescheduleChannel <- JobIDCloseDecisions
+
+	err = d.LoadWithID()
+
+	return err
 }
 
 func (d *Decision) String() string {
-	return fmt.Sprintf("%s %s (Id %d)", d.Tag, d.Title, d.Id)
+	return fmt.Sprintf("%s %s (ID %d)", d.Tag, d.Title, d.ID)
 }
 
-func FindVoterByAddress(emailAddress string) (voter *Voter, err error) {
+func FindVoterByAddress(emailAddress string) (*Voter, error) {
 	findVoterStmt := db.getPreparedStatement(sqlLoadEnabledVoterByEmail)
+
 	defer func() { _ = findVoterStmt.Close() }()
 
-	voter = &Voter{}
-	if err = findVoterStmt.Get(voter, emailAddress); err != nil {
-		if err != sql.ErrNoRows {
-			log.Errorf("getting voter for address %s failed: %v", emailAddress, err)
-		} else {
-			err = nil
-			voter = nil
+	voter := &Voter{}
+	if err := findVoterStmt.Get(voter, emailAddress); err != nil {
+		if !errors.Is(err, sql.ErrNoRows) {
+			return nil, fmt.Errorf("getting voter for address %s failed: %w", emailAddress, err)
 		}
+
+		voter = nil
 	}
-	return
+
+	return voter, nil
 }
 
 func (d *Decision) Close() error {
 	quorum, majority := d.VoteType.QuorumAndMajority()
 
-	var voteSums *VoteSums
-	var err error
+	var (
+		voteSums *VoteSums
+		err      error
+	)
 
 	if voteSums, err = d.VoteSums(); err != nil {
 		log.Errorf("getting vote sums failed: %v", err)
+
 		return err
 	}
+
 	var reasoning string
+
 	d.Status, reasoning = voteSums.CalculateResult(quorum, majority)
 
 	closeDecisionStmt := db.getPreparedNamedStatement(sqlUpdateDecisionStatus)
+
 	defer func() { _ = closeDecisionStmt.Close() }()
 
 	result, err := closeDecisionStmt.Exec(d)
 	if err != nil {
-		log.Errorf("closing vote failed: %v", err)
-		return err
+		return fmt.Errorf("closing vote failed: %w", err)
 	}
-	if affectedRows, err := result.RowsAffected(); err != nil {
-		log.Errorf("getting affected rows failed: %v", err)
-		return err
-	} else if affectedRows != 1 {
+
+	affectedRows, err := result.RowsAffected()
+	if err != nil {
+		return fmt.Errorf("getting affected rows failed: %w", err)
+	}
+
+	if affectedRows != 1 {
 		log.Warningf("wrong number of affected rows: %d (1 expected)", affectedRows)
 	}
 
@@ -641,110 +713,117 @@ func (d *Decision) Close() error {
 	return nil
 }
 
-func CloseDecisions() (err error) {
+func CloseDecisions() error {
 	getClosableDecisionsStmt := db.getPreparedNamedStatement(sqlSelectClosableDecisions)
+
 	defer func() { _ = getClosableDecisionsStmt.Close() }()
 
 	decisions := make([]*Decision, 0)
+
 	rows, err := getClosableDecisionsStmt.Queryx(struct{ Now time.Time }{time.Now().UTC()})
 	if err != nil {
-		log.Errorf("fetching closable decisions failed: %v", err)
-		return
+		return fmt.Errorf("fetching closable decisions failed: %w", err)
 	}
+
 	defer func() { _ = rows.Close() }()
+
 	for rows.Next() {
 		decision := &Decision{}
 		if err = rows.StructScan(decision); err != nil {
-			log.Errorf("scanning row failed: %v", err)
-			return
+			return fmt.Errorf("scanning row failed: %w", err)
 		}
+
 		decisions = append(decisions, decision)
 	}
+
 	defer func() { _ = rows.Close() }()
 
 	for _, decision := range decisions {
 		log.Infof("found closable decision %s", decision.Tag)
+
 		if err = decision.Close(); err != nil {
-			log.Errorf("closing decision %s failed: %s", decision.Tag, err)
-			return
+			return fmt.Errorf("closing decision %s failed: %w", decision.Tag, err)
 		}
 	}
 
-	return
+	return nil
 }
 
-func GetNextPendingDecisionDue() (due *time.Time, err error) {
+func GetNextPendingDecisionDue() (*time.Time, error) {
 	getNextPendingDecisionDueStmt := db.getPreparedStatement(sqlGetNextPendingDecisionDue)
+
 	defer func() { _ = getNextPendingDecisionDueStmt.Close() }()
 
 	row := getNextPendingDecisionDueStmt.QueryRow()
 
-	due = &time.Time{}
-	if err = row.Scan(due); err != nil {
-		if err == sql.ErrNoRows {
+	due := &time.Time{}
+	if err := row.Scan(due); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
 			log.Debug("No pending decisions")
+
 			return nil, nil
 		}
-		log.Errorf("parsing result failed: %v", err)
-		return nil, err
+
+		return nil, fmt.Errorf("parsing result failed: %w", err)
 	}
 
-	return
+	return due, nil
 }
 
-func GetReminderVoters() (voters *[]Voter, err error) {
+func GetReminderVoters() ([]Voter, error) {
 	getReminderVotersStmt := db.getPreparedStatement(sqlGetReminderVoters)
+
 	defer func() { _ = getReminderVotersStmt.Close() }()
 
-	voterSlice := make([]Voter, 0)
+	var voters []Voter
 
-	if err = getReminderVotersStmt.Select(&voterSlice); err != nil {
-		log.Errorf("getting voters failed: %v", err)
-		return
+	if err := getReminderVotersStmt.Select(&voters); err != nil {
+		return nil, fmt.Errorf("getting voters failed: %w", err)
 	}
-	voters = &voterSlice
 
-	return
+	return voters, nil
 }
 
-func FindUnvotedDecisionsForVoter(voter *Voter) (decisions *[]Decision, err error) {
-	findUnvotedDecisionsForVoterStmt := db.getPreparedStatement(sqlFindUnvotedDecisionsForVoter)
-	defer func() { _ = findUnvotedDecisionsForVoterStmt.Close() }()
+func FindUnVotedDecisionsForVoter(voter *Voter) ([]Decision, error) {
+	findUnVotedDecisionsForVoterStmt := db.getPreparedStatement(sqlFindUnVotedDecisionsForVoter)
 
-	decisionsSlice := make([]Decision, 0)
+	defer func() { _ = findUnVotedDecisionsForVoterStmt.Close() }()
 
-	if err = findUnvotedDecisionsForVoterStmt.Select(&decisionsSlice, voter.Id); err != nil {
-		log.Errorf("getting unvoted decisions failed: %v", err)
-		return
+	var decisions []Decision
+
+	if err := findUnVotedDecisionsForVoterStmt.Select(&decisions, voter.ID); err != nil {
+		return nil, fmt.Errorf("getting unvoted decisions failed: %w", err)
 	}
-	decisions = &decisionsSlice
 
-	return
+	return decisions, nil
 }
 
-func GetVoterById(id int64) (voter *Voter, err error) {
-	getVoterByIdStmt := db.getPreparedStatement(sqlGetEnabledVoterById)
-	defer func() { _ = getVoterByIdStmt.Close() }()
+func GetVoterByID(id int64) (*Voter, error) {
+	getVoterByIDStmt := db.getPreparedStatement(sqlGetEnabledVoterByID)
 
-	voter = &Voter{}
-	if err = getVoterByIdStmt.Get(voter, id); err != nil {
-		log.Errorf("getting voter failed: %v", err)
-		return
+	defer func() { _ = getVoterByIDStmt.Close() }()
+
+	voter := &Voter{}
+	if err := getVoterByIDStmt.Get(voter, id); err != nil {
+		return nil, fmt.Errorf("getting voter failed: %w", err)
 	}
 
-	return
+	return voter, nil
 }
 
 func GetVotersForProxy(proxy *Voter) (voters *[]Voter, err error) {
 	getVotersForProxyStmt := db.getPreparedStatement(sqlGetVotersForProxy)
+
 	defer func() { _ = getVotersForProxyStmt.Close() }()
 
 	votersSlice := make([]Voter, 0)
 
-	if err = getVotersForProxyStmt.Select(&votersSlice, proxy.Id); err != nil {
+	if err = getVotersForProxyStmt.Select(&votersSlice, proxy.ID); err != nil {
 		log.Errorf("Error getting voters for proxy failed: %v", err)
+
 		return
 	}
+
 	voters = &votersSlice
 
 	return

notifications.go

@@ -1,27 +1,30 @@
 /*
-   Copyright 2017-2019 Jan Dittberner
+Copyright 2017-2021 Jan Dittberner
 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this program except in compliance with the License.
-   You may obtain a copy of the License at
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this program except in compliance with the License.
+You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
 */
+
 package main
 
 import (
 	"bytes"
 	"fmt"
-	"git.cacert.org/cacert-boardvoting/boardvoting"
+	"text/template"
+
 	"github.com/Masterminds/sprig"
 	"gopkg.in/gomail.v2"
-	"text/template"
+
+	"git.cacert.org/cacert-boardvoting/boardvoting"
 
 	log "github.com/sirupsen/logrus"
 )
@@ -37,7 +40,7 @@ type recipientData struct {
 	field, address, name string
 }
 
-type notificationContent struct {
+type NotificationContent struct {
 	template   string
 	data       interface{}
 	subject    string
@@ -46,32 +49,39 @@ type notificationContent struct {
 }
 
 type NotificationMail interface {
-	GetNotificationContent() *notificationContent
+	GetNotificationContent() *NotificationContent
 }
 
 var NotifyMailChannel = make(chan NotificationMail, 1)
 
 func MailNotifier(quitMailNotifier chan int) {
 	log.Info("Launched mail notifier")
+
 	for {
 		select {
 		case notification := <-NotifyMailChannel:
 			content := notification.GetNotificationContent()
+
 			mailText, err := buildMail(content.template, content.data)
 			if err != nil {
 				log.Errorf("building mail failed: %v", err)
+
 				continue
 			}
 
 			m := gomail.NewMessage()
 			m.SetAddressHeader("From", config.NotificationSenderAddress, "CAcert board voting system")
+
 			for _, recipient := range content.recipients {
 				m.SetAddressHeader(recipient.field, recipient.address, recipient.name)
 			}
+
 			m.SetHeader("Subject", content.subject)
+
 			for _, header := range content.headers {
 				m.SetHeader(header.name, header.value...)
 			}
+
 			m.SetBody("text/plain", mailText.String())
 
 			d := gomail.NewDialer(config.MailServer.Host, config.MailServer.Port, "", "")
@@ -80,6 +90,7 @@ func MailNotifier(quitMailNotifier chan int) {
 			}
 		case <-quitMailNotifier:
 			log.Info("Ending mail notifier")
+
 			return
 		}
 	}
@@ -90,6 +101,7 @@ func buildMail(templateName string, context interface{}) (mailText *bytes.Buffer
 	if err != nil {
 		return
 	}
+
 	t, err := template.New(templateName).Funcs(sprig.GenericFuncMap()).Parse(string(b))
 	if err != nil {
 		return
@@ -97,8 +109,10 @@ func buildMail(templateName string, context interface{}) (mailText *bytes.Buffer
 
 	mailText = bytes.NewBufferString("")
 	if err := t.Execute(mailText, context); err != nil {
-		log.Errorf("Failed to execute template %s with context %+v: %v", templateName, context, err)
-		return nil, err
+		return nil, fmt.Errorf(
+			"failed to execute template %s with context %+v: %w",
+			templateName, context, err,
+		)
 	}
 
 	return
@@ -122,6 +136,7 @@ func (n *decisionReplyBase) getHeaders() headerList {
 	headers = append(headers, headerData{
 		name: "In-Reply-To", value: []string{fmt.Sprintf("<%s>", n.decision.Tag)},
 	})
+
 	return headers
 }
 
@@ -139,11 +154,12 @@ type notificationClosedDecision struct {
 func NewNotificationClosedDecision(decision *Decision, voteSums *VoteSums, reasoning string) NotificationMail {
 	notification := &notificationClosedDecision{voteSums: *voteSums, reasoning: reasoning}
 	notification.decision = *decision
+
 	return notification
 }
 
-func (n *notificationClosedDecision) GetNotificationContent() *notificationContent {
-	return &notificationContent{
+func (n *notificationClosedDecision) GetNotificationContent() *NotificationContent {
+	return &NotificationContent{
 		template: "closed_motion_mail.txt",
 		data: struct {
 			*Decision
@@ -162,10 +178,11 @@ type NotificationCreateMotion struct {
 	voter    Voter
 }
 
-func (n *NotificationCreateMotion) GetNotificationContent() *notificationContent {
+func (n *NotificationCreateMotion) GetNotificationContent() *NotificationContent {
 	voteURL := fmt.Sprintf("%s/vote/%s", config.BaseURL, n.decision.Tag)
 	unvotedURL := fmt.Sprintf("%s/motions/?unvoted=1", config.BaseURL)
-	return &notificationContent{
+
+	return &NotificationContent{
 		template: "create_motion_mail.txt",
 		data: struct {
 			*Decision
@@ -188,13 +205,15 @@ type notificationUpdateMotion struct {
 func NewNotificationUpdateMotion(decision Decision, voter Voter) NotificationMail {
 	notification := notificationUpdateMotion{voter: voter}
 	notification.decision = decision
+
 	return &notification
 }
 
-func (n *notificationUpdateMotion) GetNotificationContent() *notificationContent {
+func (n *notificationUpdateMotion) GetNotificationContent() *NotificationContent {
 	voteURL := fmt.Sprintf("%s/vote/%s", config.BaseURL, n.decision.Tag)
 	unvotedURL := fmt.Sprintf("%s/motions/?unvoted=1", config.BaseURL)
-	return &notificationContent{
+
+	return &NotificationContent{
 		template: "update_motion_mail.txt",
 		data: struct {
 			*Decision
@@ -217,11 +236,12 @@ type notificationWithDrawMotion struct {
 func NewNotificationWithDrawMotion(decision *Decision, voter *Voter) NotificationMail {
 	notification := &notificationWithDrawMotion{voter: *voter}
 	notification.decision = *decision
+
 	return notification
 }
 
-func (n *notificationWithDrawMotion) GetNotificationContent() *notificationContent {
-	return &notificationContent{
+func (n *notificationWithDrawMotion) GetNotificationContent() *NotificationContent {
+	return &NotificationContent{
 		template: "withdraw_motion_mail.txt",
 		data: struct {
 			*Decision
@@ -238,8 +258,8 @@ type RemindVoterNotification struct {
 	decisions []Decision
 }
 
-func (n *RemindVoterNotification) GetNotificationContent() *notificationContent {
-	return &notificationContent{
+func (n *RemindVoterNotification) GetNotificationContent() *NotificationContent {
+	return &NotificationContent{
 		template: "remind_voter_mail.txt",
 		data: struct {
 			Decisions []Decision
@@ -266,14 +286,21 @@ type notificationProxyVote struct {
 	justification string
 }
 
-func NewNotificationProxyVote(decision *Decision, proxy *Voter, voter *Voter, vote *Vote, justification string) NotificationMail {
+func NewNotificationProxyVote(
+	decision *Decision,
+	proxy *Voter,
+	voter *Voter,
+	vote *Vote,
+	justification string,
+) NotificationMail {
 	notification := &notificationProxyVote{proxy: *proxy, voter: *voter, vote: *vote, justification: justification}
 	notification.decision = *decision
+
 	return notification
 }
 
-func (n *notificationProxyVote) GetNotificationContent() *notificationContent {
-	return &notificationContent{
+func (n *notificationProxyVote) GetNotificationContent() *NotificationContent {
+	return &NotificationContent{
 		template: "proxy_vote_mail.txt",
 		data: struct {
 			Proxy         string
@@ -298,11 +325,12 @@ type notificationDirectVote struct {
 func NewNotificationDirectVote(decision *Decision, voter *Voter, vote *Vote) NotificationMail {
 	notification := &notificationDirectVote{voter: *voter, vote: *vote}
 	notification.decision = *decision
+
 	return notification
 }
 
-func (n *notificationDirectVote) GetNotificationContent() *notificationContent {
-	return &notificationContent{
+func (n *notificationDirectVote) GetNotificationContent() *NotificationContent {
+	return &NotificationContent{
 		template: "direct_vote_mail.txt",
 		data: struct {
 			Vote     VoteChoice