92 lines
3.1 KiB
Go
92 lines
3.1 KiB
Go
// Package customization contains the structure for the customization
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// file to configure the OTS web- and command-line interface
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package customization
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import (
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"encoding/json"
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"io/fs"
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"os"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"gopkg.in/yaml.v2"
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)
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// Frontend has a max attachment size of 64MiB as the base64 encoding
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// will break afterwards. Therefore we use a maximum secret size of
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// 65MiB and increase it by double base64 encoding:
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//
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// 65 MiB * 16/9 (twice 4/3 base64 size increase)
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const defaultMaxSecretSize = 65 * 1024 * 1024 * (16 / 9) // = 115.6MiB
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type (
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// Customize holds the structure of the customization file
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Customize struct {
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AppIcon string `json:"appIcon,omitempty" yaml:"appIcon"`
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AppTitle string `json:"appTitle,omitempty" yaml:"appTitle"`
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DisableAppTitle bool `json:"disableAppTitle,omitempty" yaml:"disableAppTitle"`
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DisablePoweredBy bool `json:"disablePoweredBy,omitempty" yaml:"disablePoweredBy"`
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DisableQRSupport bool `json:"disableQRSupport,omitempty" yaml:"disableQRSupport"`
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DisableThemeSwitcher bool `json:"disableThemeSwitcher,omitempty" yaml:"disableThemeSwitcher"`
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DisableExpiryOverride bool `json:"disableExpiryOverride,omitempty" yaml:"disableExpiryOverride"`
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ExpiryChoices []int64 `json:"expiryChoices,omitempty" yaml:"expiryChoices"`
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AcceptedFileTypes string `json:"acceptedFileTypes" yaml:"acceptedFileTypes"`
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DisableFileAttachment bool `json:"disableFileAttachment" yaml:"disableFileAttachment"`
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MaxAttachmentSizeTotal int64 `json:"maxAttachmentSizeTotal" yaml:"maxAttachmentSizeTotal"`
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MaxSecretSize int64 `json:"-" yaml:"maxSecretSize"`
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MetricsAllowedSubnets []string `json:"-" yaml:"metricsAllowedSubnets"`
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OverlayFSPath string `json:"-" yaml:"overlayFSPath"`
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UseFormalLanguage bool `json:"-" yaml:"useFormalLanguage"`
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}
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)
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// Load retrieves the Customization file from filesystem
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func Load(filename string) (cust Customize, err error) {
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if filename == "" {
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// None given, take a shortcut
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cust.applyFixes()
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return cust, nil
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}
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cf, err := os.Open(filename) //#nosec:G304 // Loading a custom file is the intention here
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if err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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logrus.Warn("customize file given but not found")
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return cust, nil
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}
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return cust, errors.Wrap(err, "opening customize file")
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}
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defer func() {
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if err := cf.Close(); err != nil {
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logrus.WithError(err).Error("closing customize file (leaked fd)")
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}
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}()
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if err = yaml.NewDecoder(cf).Decode(&cust); err != nil {
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return cust, errors.Wrap(err, "decoding customize file")
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}
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cust.applyFixes()
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return cust, nil
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}
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// ToJSON is a templating helper which returns the customization
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// serialized as JSON in a string
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func (c Customize) ToJSON() (string, error) {
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j, err := json.Marshal(c)
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return string(j), errors.Wrap(err, "marshalling JSON")
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}
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func (c *Customize) applyFixes() {
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if len(c.AppTitle) == 0 {
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c.AppTitle = "OTS - One Time Secrets"
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}
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if c.MaxSecretSize == 0 {
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c.MaxSecretSize = defaultMaxSecretSize
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}
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}
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