aerc/widgets/pgpinfo.go
Moritz Poldrack 7bdfa928cb pgp: refactor signature validity display
This commit changes the signature validity display to not use valid as
the default. Now invalid is the default which can cause fewer issues if
an attack vector emerges.

Signed-off-by: Moritz Poldrack <git@moritz.sh>
Tested-by: Tim Culverhouse <tim@timculverhouse.com>
2022-06-24 21:44:06 +02:00

99 lines
3.2 KiB
Go

package widgets
import (
"fmt"
"strings"
"unicode/utf8"
"git.sr.ht/~rjarry/aerc/config"
"git.sr.ht/~rjarry/aerc/lib/ui"
"git.sr.ht/~rjarry/aerc/models"
"github.com/gdamore/tcell/v2"
)
type PGPInfo struct {
ui.Invalidatable
details *models.MessageDetails
uiConfig config.UIConfig
}
func NewPGPInfo(details *models.MessageDetails, uiConfig config.UIConfig) *PGPInfo {
return &PGPInfo{details: details, uiConfig: uiConfig}
}
func (p *PGPInfo) DrawSignature(ctx *ui.Context) {
errorStyle := p.uiConfig.GetStyle(config.STYLE_ERROR)
warningStyle := p.uiConfig.GetStyle(config.STYLE_WARNING)
validStyle := p.uiConfig.GetStyle(config.STYLE_SUCCESS)
defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
var icon string
var indicatorStyle, textstyle tcell.Style
textstyle = defaultStyle
var indicatorText, messageText string
// TODO: Nicer prompt for TOFU, fetch from keyserver, etc
switch p.details.SignatureValidity {
case models.UnknownEntity:
icon = p.uiConfig.IconUnknown
indicatorStyle = warningStyle
indicatorText = "Unknown"
messageText = fmt.Sprintf("Signed with unknown key (%8X); authenticity unknown", p.details.SignedByKeyId)
case models.Valid:
icon = p.uiConfig.IconSigned
if p.details.IsEncrypted && p.uiConfig.IconSignedEncrypted != "" {
icon = p.uiConfig.IconSignedEncrypted
}
indicatorStyle = validStyle
indicatorText = "Authentic"
messageText = fmt.Sprintf("Signature from %s (%8X)", p.details.SignedBy, p.details.SignedByKeyId)
default:
icon = p.uiConfig.IconInvalid
indicatorStyle = errorStyle
indicatorText = "Invalid signature!"
messageText = fmt.Sprintf("This message may have been tampered with! (%s)", p.details.SignatureError)
}
x := ctx.Printf(0, 0, indicatorStyle, "%s %s ", icon, indicatorText)
ctx.Printf(x, 0, textstyle, messageText)
}
func (p *PGPInfo) DrawEncryption(ctx *ui.Context, y int) {
warningStyle := p.uiConfig.GetStyle(config.STYLE_WARNING)
validStyle := p.uiConfig.GetStyle(config.STYLE_SUCCESS)
defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
// if a sign-encrypt combination icon is set, use that
icon := p.uiConfig.IconEncrypted
if p.details.IsSigned && p.details.SignatureValidity == models.Valid && p.uiConfig.IconSignedEncrypted != "" {
icon = strings.Repeat(" ", utf8.RuneCountInString(p.uiConfig.IconSignedEncrypted))
}
x := ctx.Printf(0, y, validStyle, "%s Encrypted", icon)
x += ctx.Printf(x+1, y, defaultStyle, "To %s (%8X) ", p.details.DecryptedWith, p.details.DecryptedWithKeyId)
if !p.details.IsSigned {
x += ctx.Printf(x, y, warningStyle, "(message not signed!)")
}
}
func (p *PGPInfo) Draw(ctx *ui.Context) {
warningStyle := p.uiConfig.GetStyle(config.STYLE_WARNING)
defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', defaultStyle)
switch {
case p.details == nil && p.uiConfig.IconUnencrypted != "":
x := ctx.Printf(0, 0, warningStyle, "%s ", p.uiConfig.IconUnencrypted)
ctx.Printf(x, 0, defaultStyle, "message unencrypted and unsigned")
case p.details.IsSigned && p.details.IsEncrypted:
p.DrawSignature(ctx)
p.DrawEncryption(ctx, 1)
case p.details.IsSigned:
p.DrawSignature(ctx)
case p.details.IsEncrypted:
p.DrawEncryption(ctx, 0)
}
}
func (p *PGPInfo) Invalidate() {
p.DoInvalidate(p)
}