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// Copyright 2019 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package config // import "miniflux.app/config"
import (
"bufio"
"errors"
"fmt"
"io"
url_parser "net/url"
"os"
"strconv"
"strings"
"miniflux.app/logger"
)
// Parser handles configuration parsing.
type Parser struct {
opts *Options
}
// NewParser returns a new Parser.
func NewParser() *Parser {
return &Parser{
opts: NewOptions(),
}
}
// ParseEnvironmentVariables loads configuration values from environment variables.
func (p *Parser) ParseEnvironmentVariables() (*Options, error) {
err := p.parseLines(os.Environ())
if err != nil {
return nil, err
}
return p.opts, nil
}
// ParseFile loads configuration values from a local file.
func (p *Parser) ParseFile(filename string) (*Options, error) {
fp, err := os.Open(filename)
if err != nil {
return nil, err
}
defer fp.Close()
err = p.parseLines(p.parseFileContent(fp))
if err != nil {
return nil, err
}
return p.opts, nil
}
func (p *Parser) parseFileContent(r io.Reader) (lines []string) {
scanner := bufio.NewScanner(r)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if len(line) > 0 && !strings.HasPrefix(line, "#") && strings.Index(line, "=") > 0 {
lines = append(lines, line)
}
}
return lines
}
func (p *Parser) parseLines(lines []string) (err error) {
var port string
for _, line := range lines {
fields := strings.SplitN(line, "=", 2)
key := strings.TrimSpace(fields[0])
value := strings.TrimSpace(fields[1])
switch key {
case "LOG_DATE_TIME":
p.opts.logDateTime = parseBool(value, defaultLogDateTime)
case "DEBUG":
p.opts.debug = parseBool(value, defaultDebug)
case "BASE_URL":
p.opts.baseURL, p.opts.rootURL, p.opts.basePath, err = parseBaseURL(value)
if err != nil {
return err
}
case "PORT":
port = value
case "LISTEN_ADDR":
p.opts.listenAddr = parseString(value, defaultListenAddr)
case "DATABASE_URL":
p.opts.databaseURL = parseString(value, defaultDatabaseURL)
case "DATABASE_MAX_CONNS":
p.opts.databaseMaxConns = parseInt(value, defaultDatabaseMaxConns)
case "DATABASE_MIN_CONNS":
p.opts.databaseMinConns = parseInt(value, defaultDatabaseMinConns)
case "RUN_MIGRATIONS":
p.opts.runMigrations = parseBool(value, defaultRunMigrations)
case "DISABLE_HSTS":
p.opts.hsts = !parseBool(value, defaultHSTS)
case "HTTPS":
p.opts.HTTPS = parseBool(value, defaultHTTPS)
case "DISABLE_SCHEDULER_SERVICE":
p.opts.schedulerService = !parseBool(value, defaultSchedulerService)
case "DISABLE_HTTP_SERVICE":
p.opts.httpService = !parseBool(value, defaultHTTPService)
case "CERT_FILE":
p.opts.certFile = parseString(value, defaultCertFile)
case "KEY_FILE":
p.opts.certKeyFile = parseString(value, defaultKeyFile)
case "CERT_DOMAIN":
p.opts.certDomain = parseString(value, defaultCertDomain)
case "CERT_CACHE":
p.opts.certCache = parseString(value, defaultCertCache)
case "CLEANUP_FREQUENCY_HOURS":
p.opts.cleanupFrequencyHours = parseInt(value, defaultCleanupFrequencyHours)
case "CLEANUP_ARCHIVE_READ_DAYS":
p.opts.cleanupArchiveReadDays = parseInt(value, defaultCleanupArchiveReadDays)
case "CLEANUP_REMOVE_SESSIONS_DAYS":
p.opts.cleanupRemoveSessionsDays = parseInt(value, defaultCleanupRemoveSessionsDays)
case "CLEANUP_FREQUENCY":
logger.Error("[Config] CLEANUP_FREQUENCY has been deprecated in favor of CLEANUP_FREQUENCY_HOURS.")
if p.opts.cleanupFrequencyHours != defaultCleanupFrequencyHours {
logger.Error("[Config] Ignoring CLEANUP_FREQUENCY as CLEANUP_FREQUENCY_HOURS is already specified.")
} else {
p.opts.cleanupFrequencyHours = parseInt(value, defaultCleanupFrequencyHours)
}
case "ARCHIVE_READ_DAYS":
logger.Error("[Config] ARCHIVE_READ_DAYS has been deprecated in favor of CLEANUP_ARCHIVE_READ_DAYS.")
if p.opts.cleanupArchiveReadDays != defaultCleanupArchiveReadDays {
logger.Error("[Config] Ignoring ARCHIVE_READ_DAYS as CLEANUP_ARCHIVE_READ_DAYS is already specified.")
} else {
p.opts.cleanupArchiveReadDays = parseInt(value, defaultCleanupArchiveReadDays)
}
case "WORKER_POOL_SIZE":
p.opts.workerPoolSize = parseInt(value, defaultWorkerPoolSize)
case "POLLING_FREQUENCY":
p.opts.pollingFrequency = parseInt(value, defaultPollingFrequency)
case "BATCH_SIZE":
p.opts.batchSize = parseInt(value, defaultBatchSize)
case "PROXY_IMAGES":
p.opts.proxyImages = parseString(value, defaultProxyImages)
case "CREATE_ADMIN":
p.opts.createAdmin = parseBool(value, defaultCreateAdmin)
case "POCKET_CONSUMER_KEY":
p.opts.pocketConsumerKey = parseString(value, defaultPocketConsumerKey)
case "OAUTH2_USER_CREATION":
p.opts.oauth2UserCreationAllowed = parseBool(value, defaultOAuth2UserCreation)
case "OAUTH2_CLIENT_ID":
p.opts.oauth2ClientID = parseString(value, defaultOAuth2ClientID)
case "OAUTH2_CLIENT_SECRET":
p.opts.oauth2ClientSecret = parseString(value, defaultOAuth2ClientSecret)
case "OAUTH2_REDIRECT_URL":
p.opts.oauth2RedirectURL = parseString(value, defaultOAuth2RedirectURL)
case "OAUTH2_PROVIDER":
p.opts.oauth2Provider = parseString(value, defaultOAuth2Provider)
case "HTTP_CLIENT_TIMEOUT":
p.opts.httpClientTimeout = parseInt(value, defaultHTTPClientTimeout)
case "HTTP_CLIENT_MAX_BODY_SIZE":
p.opts.httpClientMaxBodySize = int64(parseInt(value, defaultHTTPClientMaxBodySize) * 1024 * 1024)
}
}
if port != "" {
p.opts.listenAddr = ":" + port
}
return nil
}
func parseBaseURL(value string) (string, string, string, error) {
if value == "" {
return defaultBaseURL, defaultRootURL, "", nil
}
if value[len(value)-1:] == "/" {
value = value[:len(value)-1]
}
url, err := url_parser.Parse(value)
if err != nil {
return "", "", "", fmt.Errorf("Invalid BASE_URL: %v", err)
}
scheme := strings.ToLower(url.Scheme)
if scheme != "https" && scheme != "http" {
return "", "", "", errors.New("Invalid BASE_URL: scheme must be http or https")
}
basePath := url.Path
url.Path = ""
return value, url.String(), basePath, nil
}
func parseBool(value string, fallback bool) bool {
if value == "" {
return fallback
}
value = strings.ToLower(value)
if value == "1" || value == "yes" || value == "true" || value == "on" {
return true
}
return false
}
func parseInt(value string, fallback int) int {
if value == "" {
return fallback
}
v, err := strconv.Atoi(value)
if err != nil {
return fallback
}
return v
}
func parseString(value string, fallback string) string {
if value == "" {
return fallback
}
return value
}
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