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cmd/syncthing: Always update config.xml with generate subcommand (ref #8090) (#8098)

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* cmd/syncthing: Remove unnecessary function arguments.

The openGUI() function does not need a device ID to work, and there is
only one caller anyway which uses EmptyDeviceID.

The loadOrDefaultConfig() function is always called with the same
dummy values.

* cmd/syncthing: Avoid misleading info messages from monitor process.

In order to check whether panic reporting is enabled, the monitor
process utilizes the loadOrDefaultConfig() function.  In case there is
no config file yet, info messages may be logged during creation if the
config Wrapper, which is discarded immediately after.

Stop using the DefaultConfig() utility function from lib/syncthing and
directly generate a minimal config instead to avoid these.

Add comments to loadOrDefaultConfig() explaining its limited purpose.

* cmd/syncthing/generate: Always write updated config file.

Previously, an existing config file was left untouched unless either
of the --gui-user or --gui-password options was given.  Remove that
condition and simplify the checking code.
This commit is contained in:
André Colomb 2022-01-07 11:02:12 +01:00 committed by GitHub
parent 0f93e76e80
commit 368094e15d
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 22 deletions
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15
cmd/syncthing/generate/generate.go
View File

@ -90,20 +90,13 @@ func Generate(confDir, guiUser, guiPassword string, noDefaultFolder bool) error
log.Println("Device ID:", myID)
cfgFile := locations.Get(locations.ConfigFile)
var cfg config.Wrapper
if _, err := os.Stat(cfgFile); err == nil {
if guiUser == "" && guiPassword == "" {
log.Println("WARNING: Config exists; will not overwrite.")
return nil
}
if cfg, _, err = config.Load(cfgFile, myID, events.NoopLogger); err != nil {
return fmt.Errorf("load config: %w", err)
}
} else {
cfg, _, err := config.Load(cfgFile, myID, events.NoopLogger)
if fs.IsNotExist(err) {
if cfg, err = syncthing.DefaultConfig(cfgFile, myID, events.NoopLogger, noDefaultFolder); err != nil {
return fmt.Errorf("create config: %w", err)
}
} else if err != nil {
return fmt.Errorf("load config: %w", err)
}
ctx, cancel := context.WithCancel(context.Background())

19
cmd/syncthing/main.go
View File

@ -329,7 +329,7 @@ func (options serveOptions) Run() error {
}
if options.BrowserOnly {
if err := openGUI(protocol.EmptyDeviceID); err != nil {
if err := openGUI(); err != nil {
l.Warnln("Failed to open web UI:", err)
os.Exit(svcutil.ExitError.AsInt())
}
@ -406,8 +406,8 @@ func (options serveOptions) Run() error {
return nil
}
func openGUI(myID protocol.DeviceID) error {
cfg, err := loadOrDefaultConfig(myID, events.NoopLogger)
func openGUI() error {
cfg, err := loadOrDefaultConfig()
if err != nil {
return err
}
@ -452,7 +452,7 @@ func (e *errNoUpgrade) Error() string {
}
func checkUpgrade() (upgrade.Release, error) {
cfg, err := loadOrDefaultConfig(protocol.EmptyDeviceID, events.NoopLogger)
cfg, err := loadOrDefaultConfig()
if err != nil {
return upgrade.Release{}, err
}
@ -471,7 +471,7 @@ func checkUpgrade() (upgrade.Release, error) {
}
func upgradeViaRest() error {
cfg, err := loadOrDefaultConfig(protocol.EmptyDeviceID, events.NoopLogger)
cfg, err := loadOrDefaultConfig()
if err != nil {
return err
}
@ -711,12 +711,15 @@ func setupSignalHandling(app *syncthing.App) {
}()
}
func loadOrDefaultConfig(myID protocol.DeviceID, evLogger events.Logger) (config.Wrapper, error) {
// loadOrDefaultConfig creates a temporary, minimal configuration wrapper if no file
// exists. As it disregards some command-line options, that should never be persisted.
func loadOrDefaultConfig() (config.Wrapper, error) {
cfgFile := locations.Get(locations.ConfigFile)
cfg, _, err := config.Load(cfgFile, myID, evLogger)
cfg, _, err := config.Load(cfgFile, protocol.EmptyDeviceID, events.NoopLogger)
if err != nil {
cfg, err = syncthing.DefaultConfig(cfgFile, myID, evLogger, true)
newCfg := config.New(protocol.EmptyDeviceID)
return config.Wrap(cfgFile, newCfg, protocol.EmptyDeviceID, events.NoopLogger), nil
}
return cfg, err

4
cmd/syncthing/monitor.go
View File

@ -20,11 +20,9 @@ import (
"syscall"
"time"
"github.com/syncthing/syncthing/lib/events"
"github.com/syncthing/syncthing/lib/fs"
"github.com/syncthing/syncthing/lib/locations"
"github.com/syncthing/syncthing/lib/osutil"
"github.com/syncthing/syncthing/lib/protocol"
"github.com/syncthing/syncthing/lib/svcutil"
"github.com/syncthing/syncthing/lib/sync"
)
@ -564,7 +562,7 @@ func childEnv() []string {
// panicUploadMaxWait uploading panics...
func maybeReportPanics() {
// Try to get a config to see if/where panics should be reported.
cfg, err := loadOrDefaultConfig(protocol.EmptyDeviceID, events.NoopLogger)
cfg, err := loadOrDefaultConfig()
if err != nil {
l.Warnln("Couldn't load config; not reporting crash")
return