api,frontend: add commenter password resets

api/forgot.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"net/http"
+	"time"
+)
+
+func forgot(email string, entity string) error {
+	if email == "" {
+		return errorMissingField
+	}
+
+	if entity != "owner" && entity != "commenter" {
+		return errorInvalidEntity
+	}
+
+	if !smtpConfigured {
+		return errorSmtpNotConfigured
+	}
+
+	var hex string
+	var name string
+	if entity == "owner" {
+		o, err := ownerGetByEmail(email)
+		if err != nil {
+			if err == errorNoSuchEmail {
+				// TODO: use a more random time instead.
+				time.Sleep(1 * time.Second)
+				return nil
+			} else {
+				logger.Errorf("cannot get owner by email: %v", err)
+				return errorInternal
+			}
+		}
+		hex = o.OwnerHex
+		name = o.Name
+	} else {
+		c, err := commenterGetByEmail("commento", email)
+		if err != nil {
+			if err == errorNoSuchEmail {
+				// TODO: use a more random time instead.
+				time.Sleep(1 * time.Second)
+				return nil
+			} else {
+				logger.Errorf("cannot get commenter by email: %v", err)
+				return errorInternal
+			}
+		}
+		hex = c.CommenterHex
+		name = c.Name
+	}
+
+	resetHex, err := randomHex(32)
+	if err != nil {
+		return err
+	}
+
+	var statement string
+
+	statement = `
+		INSERT INTO
+		resetHexes (resetHex, hex, entity, sendDate)
+		VALUES     ($1,       $2,  $3,     $4      );
+	`
+	_, err = db.Exec(statement, resetHex, hex, entity, time.Now().UTC())
+	if err != nil {
+		logger.Errorf("cannot insert resetHex: %v", err)
+		return errorInternal
+	}
+
+	err = smtpResetHex(email, name, resetHex)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func forgotHandler(w http.ResponseWriter, r *http.Request) {
+	type request struct {
+		Email  *string `json:"email"`
+		Entity *string `json:"entity"`
+	}
+
+	var x request
+	if err := bodyUnmarshal(r, &x); err != nil {
+		bodyMarshal(w, response{"success": false, "message": err.Error()})
+		return
+	}
+
+	if err := forgot(*x.Email, *x.Entity); err != nil {
+		bodyMarshal(w, response{"success": false, "message": err.Error()})
+		return
+	}
+
+	bodyMarshal(w, response{"success": true})
+}