aerc/config/config.go
Chris Vittal f9bba3d17d Apply relevant msglist styles in order
Allow styles to be layered over a base style. The list of styles to
apply is layered over the base style in order, such that if the layer
does not differ from the base it is not used. The order that these
styles are applied in is, from first to last:

msglist_default
msglist_unread
msglist_read    (exclusive with unread, so technically the same level)
msglist_flagged
msglist_deleted
msglist_marked

So, msglist_marked style dominates.

This fixes an issue where the msglist_deleted style was not being applied.
2020-11-01 09:50:58 +01:00

710 lines
18 KiB
Go

package config
import (
"errors"
"fmt"
"io/ioutil"
"net/url"
"os"
"os/exec"
"path"
"regexp"
"sort"
"strings"
"time"
"unicode"
"github.com/gdamore/tcell"
"github.com/go-ini/ini"
"github.com/imdario/mergo"
"github.com/kyoh86/xdg"
"git.sr.ht/~sircmpwn/aerc/lib/templates"
)
type GeneralConfig struct {
DefaultSavePath string `ini:"default-save-path"`
}
type UIConfig struct {
IndexFormat string `ini:"index-format"`
TimestampFormat string `ini:"timestamp-format"`
ShowHeaders []string `delim:","`
RenderAccountTabs string `ini:"render-account-tabs"`
PinnedTabMarker string `ini:"pinned-tab-marker"`
SidebarWidth int `ini:"sidebar-width"`
PreviewHeight int `ini:"preview-height"`
EmptyMessage string `ini:"empty-message"`
EmptyDirlist string `ini:"empty-dirlist"`
MouseEnabled bool `ini:"mouse-enabled"`
NewMessageBell bool `ini:"new-message-bell"`
Spinner string `ini:"spinner"`
SpinnerDelimiter string `ini:"spinner-delimiter"`
DirListFormat string `ini:"dirlist-format"`
Sort []string `delim:" "`
NextMessageOnDelete bool `ini:"next-message-on-delete"`
CompletionDelay time.Duration `ini:"completion-delay"`
CompletionPopovers bool `ini:"completion-popovers"`
StyleSetDirs []string `ini:"stylesets-dirs" delim:":"`
StyleSetName string `ini:"styleset-name"`
style StyleSet
}
type ContextType int
const (
UI_CONTEXT_FOLDER ContextType = iota
UI_CONTEXT_ACCOUNT
UI_CONTEXT_SUBJECT
)
type UIConfigContext struct {
ContextType ContextType
Regex *regexp.Regexp
UiConfig UIConfig
}
const (
FILTER_MIMETYPE = iota
FILTER_HEADER
)
type AccountConfig struct {
Archive string
CopyTo string
Default string
Postpone string
From string
Aliases string
Name string
Source string
SourceCredCmd string
Folders []string
FoldersExclude []string
Params map[string]string
Outgoing string
OutgoingCredCmd string
SignatureFile string
SignatureCmd string
FoldersSort []string `ini:"folders-sort" delim:","`
}
type BindingConfig struct {
Global *KeyBindings
AccountWizard *KeyBindings
Compose *KeyBindings
ComposeEditor *KeyBindings
ComposeReview *KeyBindings
MessageList *KeyBindings
MessageView *KeyBindings
Terminal *KeyBindings
}
type ComposeConfig struct {
Editor string `ini:"editor"`
HeaderLayout [][]string `ini:"-"`
AddressBookCmd string `ini:"address-book-cmd"`
}
type FilterConfig struct {
FilterType int
Filter string
Command string
Header string
Regex *regexp.Regexp
}
type ViewerConfig struct {
Pager string
Alternatives []string
ShowHeaders bool `ini:"show-headers"`
AlwaysShowMime bool `ini:"always-show-mime"`
HeaderLayout [][]string `ini:"-"`
}
type TriggersConfig struct {
NewEmail string `ini:"new-email"`
ExecuteCommand func(command []string) error
}
type TemplateConfig struct {
TemplateDirs []string `ini:"template-dirs", delim:":"`
QuotedReply string `ini:"quoted-reply"`
Forwards string `ini:"forwards"`
}
type AercConfig struct {
Bindings BindingConfig
Compose ComposeConfig
Ini *ini.File `ini:"-"`
Accounts []AccountConfig `ini:"-"`
Filters []FilterConfig `ini:"-"`
Viewer ViewerConfig `ini:"-"`
Triggers TriggersConfig `ini:"-"`
Ui UIConfig
ContextualUis []UIConfigContext
General GeneralConfig
Templates TemplateConfig
}
// Input: TimestampFormat
// Output: timestamp-format
func mapName(raw string) string {
newstr := make([]rune, 0, len(raw))
for i, chr := range raw {
if isUpper := 'A' <= chr && chr <= 'Z'; isUpper {
if i > 0 {
newstr = append(newstr, '-')
}
}
newstr = append(newstr, unicode.ToLower(chr))
}
return string(newstr)
}
func loadAccountConfig(path string) ([]AccountConfig, error) {
file, err := ini.Load(path)
if err != nil {
// No config triggers account configuration wizard
return nil, nil
}
file.NameMapper = mapName
var accounts []AccountConfig
for _, _sec := range file.SectionStrings() {
if _sec == "DEFAULT" {
continue
}
sec := file.Section(_sec)
account := AccountConfig{
Archive: "Archive",
Default: "INBOX",
Postpone: "Drafts",
Name: _sec,
Params: make(map[string]string),
}
if err = sec.MapTo(&account); err != nil {
return nil, err
}
for key, val := range sec.KeysHash() {
if key == "folders" {
folders := strings.Split(val, ",")
sort.Strings(folders)
account.Folders = folders
} else if key == "folders-exclude" {
folders := strings.Split(val, ",")
sort.Strings(folders)
account.FoldersExclude = folders
} else if key == "source-cred-cmd" {
account.SourceCredCmd = val
} else if key == "outgoing" {
account.Outgoing = val
} else if key == "outgoing-cred-cmd" {
account.OutgoingCredCmd = val
} else if key == "from" {
account.From = val
} else if key == "aliases" {
account.Aliases = val
} else if key == "copy-to" {
account.CopyTo = val
} else if key == "archive" {
account.Archive = val
} else if key != "name" {
account.Params[key] = val
}
}
if account.Source == "" {
return nil, fmt.Errorf("Expected source for account %s", _sec)
}
source, err := parseCredential(account.Source, account.SourceCredCmd)
if err != nil {
return nil, fmt.Errorf("Invalid source credentials for %s: %s", _sec, err)
}
account.Source = source
outgoing, err := parseCredential(account.Outgoing, account.OutgoingCredCmd)
if err != nil {
return nil, fmt.Errorf("Invalid outgoing credentials for %s: %s", _sec, err)
}
account.Outgoing = outgoing
accounts = append(accounts, account)
}
return accounts, nil
}
func parseCredential(cred, command string) (string, error) {
if cred == "" || command == "" {
return cred, nil
}
u, err := url.Parse(cred)
if err != nil {
return "", err
}
// ignore the command if a password is specified
if _, exists := u.User.Password(); exists {
return cred, nil
}
// don't attempt to parse the command if the url is a path (ie /usr/bin/sendmail)
if !u.IsAbs() {
return cred, nil
}
cmd := exec.Command("sh", "-c", command)
cmd.Stdin = os.Stdin
output, err := cmd.Output()
if err != nil {
return "", fmt.Errorf("failed to read password: %s", err)
}
pw := strings.TrimSpace(string(output))
u.User = url.UserPassword(u.User.Username(), pw)
return u.String(), nil
}
func installTemplate(root, sharedir, name string) error {
if _, err := os.Stat(root); os.IsNotExist(err) {
err := os.MkdirAll(root, 0755)
if err != nil {
return err
}
}
data, err := ioutil.ReadFile(path.Join(sharedir, name))
if err != nil {
return err
}
err = ioutil.WriteFile(path.Join(root, name), data, 0644)
if err != nil {
return err
}
return nil
}
func (config *AercConfig) LoadConfig(file *ini.File) error {
if filters, err := file.GetSection("filters"); err == nil {
// TODO: Parse the filter more finely, e.g. parse the regex
for _, match := range filters.KeyStrings() {
cmd := filters.KeysHash()[match]
filter := FilterConfig{
Command: cmd,
Filter: match,
}
if strings.Contains(match, ",~") {
filter.FilterType = FILTER_HEADER
header := filter.Filter[:strings.Index(filter.Filter, ",")]
regex := filter.Filter[strings.Index(filter.Filter, "~")+1:]
filter.Header = strings.ToLower(header)
filter.Regex, err = regexp.Compile(regex)
if err != nil {
panic(err)
}
} else if strings.ContainsRune(match, ',') {
filter.FilterType = FILTER_HEADER
header := filter.Filter[:strings.Index(filter.Filter, ",")]
value := filter.Filter[strings.Index(filter.Filter, ",")+1:]
filter.Header = strings.ToLower(header)
filter.Regex, err = regexp.Compile(regexp.QuoteMeta(value))
} else {
filter.FilterType = FILTER_MIMETYPE
}
config.Filters = append(config.Filters, filter)
}
}
if viewer, err := file.GetSection("viewer"); err == nil {
if err := viewer.MapTo(&config.Viewer); err != nil {
return err
}
for key, val := range viewer.KeysHash() {
switch key {
case "alternatives":
config.Viewer.Alternatives = strings.Split(val, ",")
case "header-layout":
config.Viewer.HeaderLayout = parseLayout(val)
}
}
}
if compose, err := file.GetSection("compose"); err == nil {
if err := compose.MapTo(&config.Compose); err != nil {
return err
}
for key, val := range compose.KeysHash() {
switch key {
case "header-layout":
config.Compose.HeaderLayout = parseLayout(val)
}
}
}
if ui, err := file.GetSection("ui"); err == nil {
if err := ui.MapTo(&config.Ui); err != nil {
return err
}
}
for _, sectionName := range file.SectionStrings() {
if !strings.Contains(sectionName, "ui:") {
continue
}
uiSection, err := file.GetSection(sectionName)
if err != nil {
return err
}
uiSubConfig := UIConfig{}
if err := uiSection.MapTo(&uiSubConfig); err != nil {
return err
}
contextualUi :=
UIConfigContext{
UiConfig: uiSubConfig,
}
var index int
if strings.Contains(sectionName, "~") {
index = strings.Index(sectionName, "~")
regex := string(sectionName[index+1:])
contextualUi.Regex, err = regexp.Compile(regex)
if err != nil {
return err
}
} else if strings.Contains(sectionName, "=") {
index = strings.Index(sectionName, "=")
value := string(sectionName[index+1:])
contextualUi.Regex, err = regexp.Compile(regexp.QuoteMeta(value))
if err != nil {
return err
}
} else {
return fmt.Errorf("Invalid Ui Context regex in %s", sectionName)
}
switch sectionName[3:index] {
case "account":
contextualUi.ContextType = UI_CONTEXT_ACCOUNT
case "folder":
contextualUi.ContextType = UI_CONTEXT_FOLDER
case "subject":
contextualUi.ContextType = UI_CONTEXT_SUBJECT
default:
return fmt.Errorf("Unknown Contextual Ui Section: %s", sectionName)
}
config.ContextualUis = append(config.ContextualUis, contextualUi)
}
if triggers, err := file.GetSection("triggers"); err == nil {
if err := triggers.MapTo(&config.Triggers); err != nil {
return err
}
}
if templatesSec, err := file.GetSection("templates"); err == nil {
if err := templatesSec.MapTo(&config.Templates); err != nil {
return err
}
templateDirs := templatesSec.Key("template-dirs").String()
if templateDirs != "" {
config.Templates.TemplateDirs = strings.Split(templateDirs, ":")
}
for key, val := range templatesSec.KeysHash() {
if key == "template-dirs" {
continue
}
_, err := templates.ParseTemplateFromFile(
val, config.Templates.TemplateDirs, templates.TestTemplateData())
if err != nil {
return err
}
}
}
if err := config.Ui.loadStyleSet(
config.Ui.StyleSetDirs); err != nil {
return err
}
for idx, contextualUi := range config.ContextualUis {
if contextualUi.UiConfig.StyleSetName == "" &&
len(contextualUi.UiConfig.StyleSetDirs) == 0 {
continue // no need to do anything if nothing is overridden
}
// fill in the missing part from the base
if contextualUi.UiConfig.StyleSetName == "" {
config.ContextualUis[idx].UiConfig.StyleSetName = config.Ui.StyleSetName
} else if len(contextualUi.UiConfig.StyleSetDirs) == 0 {
config.ContextualUis[idx].UiConfig.StyleSetDirs = config.Ui.StyleSetDirs
}
// since at least one of them has changed, load the styleset
if err := config.ContextualUis[idx].UiConfig.loadStyleSet(
config.ContextualUis[idx].UiConfig.StyleSetDirs); err != nil {
return err
}
}
return nil
}
func LoadConfigFromFile(root *string, sharedir string) (*AercConfig, error) {
if root == nil {
_root := path.Join(xdg.ConfigHome(), "aerc")
root = &_root
}
filename := path.Join(*root, "accounts.conf")
if err := checkConfigPerms(filename); err != nil {
return nil, err
}
filename = path.Join(*root, "aerc.conf")
file, err := ini.LoadSources(ini.LoadOptions{
KeyValueDelimiters: "=",
}, filename)
if err != nil {
if err := installTemplate(*root, sharedir, "aerc.conf"); err != nil {
return nil, err
}
if file, err = ini.LoadSources(ini.LoadOptions{
KeyValueDelimiters: "=",
}, filename); err != nil {
return nil, err
}
}
file.NameMapper = mapName
config := &AercConfig{
Bindings: BindingConfig{
Global: NewKeyBindings(),
AccountWizard: NewKeyBindings(),
Compose: NewKeyBindings(),
ComposeEditor: NewKeyBindings(),
ComposeReview: NewKeyBindings(),
MessageList: NewKeyBindings(),
MessageView: NewKeyBindings(),
Terminal: NewKeyBindings(),
},
Ini: file,
Ui: UIConfig{
IndexFormat: "%D %-17.17n %s",
TimestampFormat: "2006-01-02 03:04 PM",
ShowHeaders: []string{
"From", "To", "Cc", "Bcc", "Subject", "Date",
},
RenderAccountTabs: "auto",
PinnedTabMarker: "`",
SidebarWidth: 20,
PreviewHeight: 12,
EmptyMessage: "(no messages)",
EmptyDirlist: "(no folders)",
MouseEnabled: false,
NewMessageBell: true,
Spinner: "[..] , [..] , [..] , [..] , [..], [..] , [..] , [..] ",
SpinnerDelimiter: ",",
DirListFormat: "%n %>r",
NextMessageOnDelete: true,
CompletionDelay: 250 * time.Millisecond,
CompletionPopovers: true,
StyleSetDirs: []string{path.Join(sharedir, "stylesets")},
StyleSetName: "default",
},
ContextualUis: []UIConfigContext{},
Viewer: ViewerConfig{
Pager: "less -R",
Alternatives: []string{"text/plain", "text/html"},
ShowHeaders: false,
HeaderLayout: [][]string{
{"From", "To"},
{"Cc", "Bcc"},
{"Date"},
{"Subject"},
},
},
Compose: ComposeConfig{
HeaderLayout: [][]string{
{"To", "From"},
{"Subject"},
},
},
Templates: TemplateConfig{
TemplateDirs: []string{path.Join(sharedir, "templates")},
QuotedReply: "quoted_reply",
Forwards: "forward_as_body",
},
}
// These bindings are not configurable
config.Bindings.AccountWizard.ExKey = KeyStroke{
Key: tcell.KeyCtrlE,
}
quit, _ := ParseBinding("<C-q>", ":quit<Enter>")
config.Bindings.AccountWizard.Add(quit)
if err = config.LoadConfig(file); err != nil {
return nil, err
}
if ui, err := file.GetSection("general"); err == nil {
if err := ui.MapTo(&config.General); err != nil {
return nil, err
}
}
accountsPath := path.Join(*root, "accounts.conf")
if accounts, err := loadAccountConfig(accountsPath); err != nil {
return nil, err
} else {
config.Accounts = accounts
}
filename = path.Join(*root, "binds.conf")
binds, err := ini.Load(filename)
if err != nil {
if err := installTemplate(*root, sharedir, "binds.conf"); err != nil {
return nil, err
}
if binds, err = ini.Load(filename); err != nil {
return nil, err
}
}
groups := map[string]**KeyBindings{
"default": &config.Bindings.Global,
"compose": &config.Bindings.Compose,
"messages": &config.Bindings.MessageList,
"terminal": &config.Bindings.Terminal,
"view": &config.Bindings.MessageView,
"compose::editor": &config.Bindings.ComposeEditor,
"compose::review": &config.Bindings.ComposeReview,
}
for _, name := range binds.SectionStrings() {
sec, err := binds.GetSection(name)
if err != nil {
return nil, err
}
group, ok := groups[strings.ToLower(name)]
if !ok {
return nil, errors.New("Unknown keybinding group " + name)
}
bindings := NewKeyBindings()
for key, value := range sec.KeysHash() {
if key == "$ex" {
strokes, err := ParseKeyStrokes(value)
if err != nil {
return nil, err
}
if len(strokes) != 1 {
return nil, errors.New(
"Error: only one keystroke supported for $ex")
}
bindings.ExKey = strokes[0]
continue
}
if key == "$noinherit" {
if value == "false" {
continue
}
if value != "true" {
return nil, errors.New(
"Error: expected 'true' or 'false' for $noinherit")
}
bindings.Globals = false
continue
}
binding, err := ParseBinding(key, value)
if err != nil {
return nil, err
}
bindings.Add(binding)
}
*group = MergeBindings(bindings, *group)
}
// Globals can't inherit from themselves
config.Bindings.Global.Globals = false
return config, nil
}
// checkConfigPerms checks for too open permissions
// printing the fix on stdout and returning an error
func checkConfigPerms(filename string) error {
info, err := os.Stat(filename)
if err != nil {
return nil // disregard absent files
}
perms := info.Mode().Perm()
goPerms := perms >> 3
// group or others have read access
if goPerms&0x44 != 0 {
fmt.Fprintf(os.Stderr, "The file %v has too open permissions.\n", filename)
fmt.Fprintln(os.Stderr, "This is a security issue (it contains passwords).")
fmt.Fprintf(os.Stderr, "To fix it, run `chmod 600 %v`\n", filename)
return errors.New("account.conf permissions too lax")
}
return nil
}
func parseLayout(layout string) [][]string {
rows := strings.Split(layout, ",")
l := make([][]string, len(rows))
for i, r := range rows {
l[i] = strings.Split(r, "|")
}
return l
}
func (ui *UIConfig) loadStyleSet(styleSetDirs []string) error {
ui.style = NewStyleSet()
err := ui.style.LoadStyleSet(ui.StyleSetName, styleSetDirs)
if err != nil {
return fmt.Errorf("Unable to load default styleset: %s", err)
}
return nil
}
func (config AercConfig) mergeContextualUi(baseUi UIConfig,
contextType ContextType, s string) UIConfig {
for _, contextualUi := range config.ContextualUis {
if contextualUi.ContextType != contextType {
continue
}
if !contextualUi.Regex.Match([]byte(s)) {
continue
}
mergo.Merge(&baseUi, contextualUi.UiConfig, mergo.WithOverride)
if contextualUi.UiConfig.StyleSetName != "" {
baseUi.style = contextualUi.UiConfig.style
}
return baseUi
}
return baseUi
}
func (config AercConfig) GetUiConfig(params map[ContextType]string) UIConfig {
baseUi := config.Ui
for k, v := range params {
baseUi = config.mergeContextualUi(baseUi, k, v)
}
return baseUi
}
func (uiConfig UIConfig) GetStyle(so StyleObject) tcell.Style {
return uiConfig.style.Get(so)
}
func (uiConfig UIConfig) GetStyleSelected(so StyleObject) tcell.Style {
return uiConfig.style.Selected(so)
}
func (uiConfig UIConfig) GetComposedStyle(base StyleObject,
styles []StyleObject) tcell.Style {
return uiConfig.style.Compose(base, styles)
}
func (uiConfig UIConfig) GetComposedStyleSelected(base StyleObject, styles []StyleObject) tcell.Style {
return uiConfig.style.ComposeSelected(base, styles)
}