pgp: add customizable icons

Signed-off-by: Moritz Poldrack <git@moritz.sh>
Tested-by: Tim Culverhouse <tim@timculverhouse.com>

config/aerc.conf

@@ -156,6 +156,16 @@ completion-delay=250ms
 # Default: true
 completion-popovers=true
 
+# Uncomment to use UTF-8 symbols to indicate PGP status of messages
+#
+# Default: ASCII
+#icon-unencrypted=
+#icon-encrypted=✔
+#icon-signed=✔
+#icon-signed-encrypted=✔
+#icon-unknown=✘
+#icon-invalid=⚠
+
 #[ui:account=foo]
 #
 # Enable threading in the ui. Only works with notmuch:// and imap:// accounts

config/config.go

@@ -50,6 +50,12 @@ type UIConfig struct {
 	NewMessageBell      bool          `ini:"new-message-bell"`
 	Spinner             string        `ini:"spinner"`
 	SpinnerDelimiter    string        `ini:"spinner-delimiter"`
+	IconUnencrypted     string        `ini:"icon-unencrypted"`
+	IconEncrypted       string        `ini:"icon-encrypted"`
+	IconSigned          string        `ini:"icon-signed"`
+	IconSignedEncrypted string        `ini:"icon-signed-encrypted"`
+	IconUnknown         string        `ini:"icon-unknown"`
+	IconInvalid         string        `ini:"icon-invalid"`
 	DirListFormat       string        `ini:"dirlist-format"`
 	DirListDelay        time.Duration `ini:"dirlist-delay"`
 	DirListTree         bool          `ini:"dirlist-tree"`
@@ -702,6 +708,12 @@ func LoadConfigFromFile(root *string, logger *log.Logger) (*AercConfig, error) {
 			FuzzyComplete:       false,
 			Spinner:             "[..]    , [..]   ,  [..]  ,   [..] ,    [..],   [..] ,  [..]  , [..]   ",
 			SpinnerDelimiter:    ",",
+			IconUnencrypted:     "",
+			IconSigned:          "[s]",
+			IconEncrypted:       "[e]",
+			IconSignedEncrypted: "",
+			IconUnknown:         "[s?]",
+			IconInvalid:         "[s!]",
 			DirListFormat:       "%n %>r",
 			DirListDelay:        200 * time.Millisecond,
 			NextMessageOnDelete: true,

doc/aerc-config.5.scd

@@ -253,6 +253,39 @@ These options are configured in the *[ui]* section of aerc.conf.
 
 	Have a look at *aerc-stylesets*(7) as to how a styleset looks like.
 
+*icon-unencrypted*
+	The icon to display for unencrypted mails.
+
+	Default: ""
+
+*icon-encrypted*
+	The icon to display for encrypted mails.
+
+	Default: [e]
+
+*icon-signed*
+	The icon to display for signed mails where the signature was
+	successfully validated.
+
+	Default: [s]
+
+*icon-signed-encrypted*
+	The icon to display for signed and encrypted mails where the signature
+	was successfully verified.
+
+	Default: [s|e]
+
+*icon-unknown*
+	The icon to display for signed mails which could not be verified due to
+	the key being unknown.
+
+	Default: [s?]
+
+*icon-invalid*
+	The icon to display for signed mails where verification failed.
+
+	Default: [s!]
+
 *fuzzy-complete*
 	When typing a command or option, the popover will now show not only the
 	items /starting/ with the string input by the user, but it will also show

widgets/pgpinfo.go

@@ -1,6 +1,9 @@
 package widgets
 
 import (
+	"strings"
+	"unicode/utf8"
+
 	"git.sr.ht/~rjarry/aerc/config"
 	"git.sr.ht/~rjarry/aerc/lib/ui"
 	"git.sr.ht/~rjarry/aerc/models"
@@ -26,17 +29,21 @@ func (p *PGPInfo) DrawSignature(ctx *ui.Context) {
 	if p.details.SignatureValidity == models.UnknownEntity ||
 		p.details.SignedBy == "" {
 
-		x := ctx.Printf(0, 0, warningStyle, "*")
+		x := ctx.Printf(0, 0, warningStyle, "%s unknown", p.uiConfig.IconUnknown)
 		x += ctx.Printf(x, 0, defaultStyle,
 			" Signed with unknown key (%8X); authenticity unknown",
 			p.details.SignedByKeyId)
 	} else if p.details.SignatureValidity != models.Valid {
-		x := ctx.Printf(0, 0, errorStyle, "Invalid signature!")
+		x := ctx.Printf(0, 0, errorStyle, "%s Invalid signature!", p.uiConfig.IconInvalid)
 		x += ctx.Printf(x, 0, errorStyle,
 			" This message may have been tampered with! (%s)",
 			p.details.SignatureError)
 	} else {
-		x := ctx.Printf(0, 0, validStyle, "✓ Authentic ")
+		icon := p.uiConfig.IconSigned
+		if p.details.IsEncrypted {
+			icon = p.uiConfig.IconSignedEncrypted
+		}
+		x := ctx.Printf(0, 0, validStyle, "%s Authentic ", icon)
 		x += ctx.Printf(x, 0, defaultStyle,
 			"Signature from %s (%8X)",
 			p.details.SignedBy, p.details.SignedByKeyId)
@@ -48,7 +55,12 @@ func (p *PGPInfo) DrawEncryption(ctx *ui.Context, y int) {
 	validStyle := p.uiConfig.GetStyle(config.STYLE_SUCCESS)
 	defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
 
-	x := ctx.Printf(0, y, validStyle, "✓ Encrypted ")
+	icon := p.uiConfig.IconEncrypted
+	if p.details.IsSigned && p.details.SignatureValidity == models.Valid {
+		icon = strings.Repeat(" ", utf8.RuneCountInString(p.uiConfig.IconSignedEncrypted))
+	}
+
+	x := ctx.Printf(0, y, validStyle, "%s Encrypted ", icon)
 	x += ctx.Printf(x, y, defaultStyle,
 		"To %s (%8X) ", p.details.DecryptedWith, p.details.DecryptedWithKeyId)
 	if !p.details.IsSigned {