notmuch/test/T356-protected-headers.sh
Daniel Kahn Gillmor 56416a5470 cli/show: add information about which headers were protected
The header-mask member of the per-message crypto object allows a
clever UI frontend to mark whether a header was protected (or not).
And if it was protected, it contains enough information to show useful
detail to an interested user.  For example, an MUA could offer a "show
what this message's Subject looked like on the wire" feature in expert
mode.

As before, we only handle Subject for now, but we might be able to
handle other headers in the future.

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>

Amended by db: tweaked schemata notation.
2019-05-29 08:11:50 -03:00

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#!/usr/bin/env bash
# TODO:
# * check S/MIME as well as PGP/MIME
# * process headers protected by signature
test_description='Message decryption with protected headers'
. $(dirname "$0")/test-lib.sh || exit 1
##################################################
add_gnupg_home
add_email_corpus protected-headers
test_begin_subtest "verify protected header is not visible without decryption"
output=$(notmuch show --format=json id:protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'no_crypto_info:[0][0][0]["crypto"]={}' \
'subject:[0][0][0]["headers"]["Subject"]="Subject Unavailable"'
test_begin_subtest "verify protected header is visible with decryption"
output=$(notmuch show --decrypt=true --format=json id:protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is a protected header"'
test_begin_subtest "misplaced protected headers should not be made visible during decryption"
output=$(notmuch show --decrypt=true --format=json id:misplaced-protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full"}}' \
'subject:[0][0][0]["headers"]["Subject"]="Subject Unavailable"'
test_begin_subtest "verify double-wrapped phony protected header is not visible when inner decryption fails"
output=$(notmuch show --decrypt=true --format=json id:double-wrapped-with-phony-protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full"}}' \
'subject:[0][0][0]["headers"]["Subject"]="Subject Unavailable"'
test_begin_subtest "cleartext phony protected headers should not be made visible when decryption fails"
output=$(notmuch show --decrypt=true --format=json id:phony-protected-header-bad-encryption@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'no_crypto_info:[0][0][0]["crypto"]={}' \
'subject:[0][0][0]["headers"]["Subject"]="Subject Unavailable"'
test_begin_subtest "wrapped protected headers should not be made visible during decryption"
output=$(notmuch show --decrypt=true --format=json id:wrapped-protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "partial"}}' \
'subject:[0][0][0]["headers"]["Subject"]="[mailing-list] Subject Unavailable"'
test_begin_subtest "internal headers without protected-header attribute should be skipped"
output=$(notmuch show --decrypt=true --format=json id:no-protected-header-attribute@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full"}}' \
'subject:[0][0][0]["headers"]["Subject"]="Subject Unavailable"'
test_begin_subtest "verify nested message/rfc822 protected header is visible"
output=$(notmuch show --decrypt=true --format=json id:nested-rfc822-message@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is a message using draft-melnikov-smime-header-signing"'
test_done