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authorDrew DeVault <sir@cmpwn.com>2020-03-03 16:20:07 -0500
committerDrew DeVault <sir@cmpwn.com>2020-03-03 16:49:52 -0500
commitf3158b36f1f210ff54febbe82b571c1379b30c98 (patch)
tree10cde839c9517609f55b8f1057b1cf84ac592632 /widgets/pgpinfo.go
parent89f1684ea4b5e680db7ff06a54b2d4e78212cd12 (diff)
downloadaerc-f3158b36f1f210ff54febbe82b571c1379b30c98.tar.gz
Initial support for PGP decryption & signatures
Diffstat (limited to 'widgets/pgpinfo.go')
-rw-r--r--widgets/pgpinfo.go93
1 files changed, 93 insertions, 0 deletions
diff --git a/widgets/pgpinfo.go b/widgets/pgpinfo.go
new file mode 100644
index 00000000..b6a7a16c
--- /dev/null
+++ b/widgets/pgpinfo.go
@@ -0,0 +1,93 @@
+package widgets
+
+import (
+ "errors"
+
+ "git.sr.ht/~sircmpwn/aerc/lib/ui"
+
+ "github.com/gdamore/tcell"
+ "golang.org/x/crypto/openpgp"
+ pgperrors "golang.org/x/crypto/openpgp/errors"
+)
+
+type PGPInfo struct {
+ ui.Invalidatable
+ details *openpgp.MessageDetails
+}
+
+func NewPGPInfo(details *openpgp.MessageDetails) *PGPInfo {
+ return &PGPInfo{details: details}
+}
+
+func (p *PGPInfo) DrawSignature(ctx *ui.Context, offs bool) {
+ errorStyle := tcell.StyleDefault.Background(tcell.ColorRed).
+ Foreground(tcell.ColorWhite).Bold(true)
+ softErrorStyle := tcell.StyleDefault.Foreground(tcell.ColorYellow).
+ Reverse(true).Bold(true)
+ validStyle := tcell.StyleDefault.Foreground(tcell.ColorGreen).Bold(true)
+ header := "Signature "
+ if offs {
+ header += " "
+ }
+
+ // TODO: Nicer prompt for TOFU, fetch from keyserver, etc
+ if errors.Is(p.details.SignatureError, pgperrors.ErrUnknownIssuer) ||
+ p.details.SignedBy == nil {
+
+ x := ctx.Printf(0, 0, tcell.StyleDefault.Bold(true), "%s", header)
+ x += ctx.Printf(x, 0, softErrorStyle, " Unknown ")
+ x += ctx.Printf(x, 0, tcell.StyleDefault,
+ " Signed with unknown key (%8X); authenticity unknown",
+ p.details.SignedByKeyId)
+ } else if p.details.SignatureError != nil {
+ x := ctx.Printf(0, 0, tcell.StyleDefault.Bold(true), "%s", header)
+ x += ctx.Printf(x, 0, errorStyle, " ✗ Invalid! ")
+ x += ctx.Printf(x, 0, tcell.StyleDefault.
+ Foreground(tcell.ColorRed).Bold(true),
+ " This message may have been tampered with! (%s)",
+ p.details.SignatureError.Error())
+ } else {
+ entity := p.details.SignedBy.Entity
+ var ident *openpgp.Identity
+ // TODO: Pick identity more intelligently
+ for _, ident = range entity.Identities {
+ break
+ }
+ ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', validStyle)
+ x := ctx.Printf(0, 0, tcell.StyleDefault.Bold(true), "%s", header)
+ x += ctx.Printf(x, 0, validStyle, "✓ Signed ")
+ x += ctx.Printf(x, 0, tcell.StyleDefault,
+ "by %s (%8X)", ident.Name, p.details.SignedByKeyId)
+ }
+}
+
+func (p *PGPInfo) DrawEncryption(ctx *ui.Context, y int) {
+ validStyle := tcell.StyleDefault.Foreground(tcell.ColorGreen).Bold(true)
+ entity := p.details.DecryptedWith.Entity
+ var ident *openpgp.Identity
+ // TODO: Pick identity more intelligently
+ for _, ident = range entity.Identities {
+ break
+ }
+
+ x := ctx.Printf(0, y, tcell.StyleDefault.Bold(true), "Encryption ")
+ x += ctx.Printf(x, y, validStyle, "✓ Encrypted ")
+ x += ctx.Printf(x, y, tcell.StyleDefault,
+ "for %s (%8X) ", ident.Name, p.details.DecryptedWith.PublicKey.KeyId)
+}
+
+func (p *PGPInfo) Draw(ctx *ui.Context) {
+ ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
+ if p.details.IsSigned && p.details.IsEncrypted {
+ p.DrawSignature(ctx, true)
+ p.DrawEncryption(ctx, 1)
+ } else if p.details.IsSigned {
+ p.DrawSignature(ctx, false)
+ } else if p.details.IsEncrypted {
+ p.DrawEncryption(ctx, 0)
+ }
+}
+
+func (p *PGPInfo) Invalidate() {
+ p.DoInvalidate(p)
+}