notmuch/test/T356-protected-headers.sh
Daniel Kahn Gillmor 9829533e92 index: avoid indexing legacy-display parts
When we notice a legacy-display part during indexing, it makes more
sense to avoid indexing it as part of the message body.

Given that the protected subject will already be indexed, there is no
need to index this part at all, so we skip over it.

If this happens during indexing, we set a property on the message:
index.repaired=skip-protected-headers-legacy-display

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
2019-09-01 08:45:30 -03:00

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#!/usr/bin/env bash
# TODO:
# * check S/MIME as well as PGP/MIME
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 <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is a protected header"'
test_begin_subtest "when no external header is present, show masked subject as null"
output=$(notmuch show --decrypt=true --format=json id:subjectless-protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": null}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is a protected header"'
test_begin_subtest "misplaced protected headers should not be made visible during decryption"
output=$(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 <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is a message using draft-melnikov-smime-header-signing"'
test_begin_subtest "show cryptographic envelope on signed mail"
output=$(notmuch show --verify --format=json id:simple-signed-mail@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"signed": {"status": [{"created": 1525609971, "fingerprint": "'$FINGERPRINT'", "userid": "'"$SELF_USERID"'", "status": "good"}]}}'
test_begin_subtest "verify signed protected header"
output=$(notmuch show --verify --format=json id:signed-protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"signed": {"status": [{"created": 1525350527, "fingerprint": "'$FINGERPRINT'", "userid": "'"$SELF_USERID"'", "status": "good"}], "headers": ["Subject"]}}'
test_begin_subtest "protected subject does not leak by default in replies"
output=$(notmuch reply --decrypt=true --format=json id:protected-header@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:["original"]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:["original"]["headers"]["Subject"]="This is a protected header"' \
'reply-subject:["reply-headers"]["Subject"]="Re: Subject Unavailable"'
test_begin_subtest "protected subject is not indexed by default"
output=$(notmuch search --output=messages 'subject:"This is a protected header"')
test_expect_equal "$output" ''
test_begin_subtest "reindex message with protected header"
test_expect_success 'notmuch reindex --decrypt=true id:protected-header@crypto.notmuchmail.org'
test_begin_subtest "protected subject is indexed when cleartext is indexed"
output=$(notmuch search --output=messages 'subject:"This is a protected header"')
test_expect_equal "$output" 'id:protected-header@crypto.notmuchmail.org'
test_begin_subtest "indexed protected subject is visible in search"
output=$(notmuch search --format=json 'id:protected-header@crypto.notmuchmail.org')
test_json_nodes <<<"$output" \
'subject:[0]["subject"]="This is a protected header"'
test_begin_subtest "indexed protected subject is not visible in reply header"
output=$(notmuch reply --format=json 'id:protected-header@crypto.notmuchmail.org')
test_json_nodes <<<"$output" \
'subject:["original"]["headers"]["Subject"]="This is a protected header"' \
'reply-subject:["reply-headers"]["Subject"]="Re: Subject Unavailable"'
test_begin_subtest "verify correct protected header when submessage exists"
output=$(notmuch show --decrypt=true --format=json id:encrypted-message-with-forwarded-attachment@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="This is the cryptographic envelope subject"'
test_begin_subtest "verify protected header is both signed and encrypted"
output=$(notmuch show --decrypt=true --format=json id:encrypted-signed@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={
"signed":{"status": [{"status": "good", "fingerprint": "'$FINGERPRINT'", "userid": "'"$SELF_USERID"'", "created": 1525812676}],
"encrypted": true, "headers": ["Subject"]},"decrypted": {"status": "full", "header-mask": {"Subject": "Subject Unavailable"}}}' \
'subject:[0][0][0]["headers"]["Subject"]="Rhinoceros dinner"'
test_begin_subtest "verify protected header is signed even when not masked"
output=$(notmuch show --decrypt=true --format=json id:encrypted-signed-not-masked@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'crypto:[0][0][0]["crypto"]={
"signed":{"status": [{"status": "good", "fingerprint": "'$FINGERPRINT'", "userid": "'"$SELF_USERID"'", "created": 1525812676}],
"encrypted": true, "headers": ["Subject"]},"decrypted": {"status": "full"}}' \
'subject:[0][0][0]["headers"]["Subject"]="Rhinoceros dinner"'
test_begin_subtest "reindex everything, ensure headers are as expected"
notmuch reindex --decrypt=true from:test_suite@notmuchmail.org
output=$(notmuch search --output=messages 'subject:"protected header" or subject:"Rhinoceros" or subject:"draft-melnikov-smime-header-signing" or subject:"valid"' | sort)
test_expect_equal "$output" 'id:encrypted-signed-not-masked@crypto.notmuchmail.org
id:encrypted-signed@crypto.notmuchmail.org
id:nested-rfc822-message@crypto.notmuchmail.org
id:protected-header@crypto.notmuchmail.org
id:subjectless-protected-header@crypto.notmuchmail.org'
test_begin_subtest "when rendering protected headers, avoid rendering legacy-display part"
output=$(notmuch show --format=json id:protected-with-legacy-display@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'subject:[0][0][0]["headers"]["Subject"]="Interrupting Cow"' \
'no_legacy_display:[0][0][0]["body"][0]["content"][1]["content-type"]="text/plain"'
test_begin_subtest "when replying, avoid rendering legacy-display part"
output=$(notmuch reply --format=json id:protected-with-legacy-display@crypto.notmuchmail.org)
test_json_nodes <<<"$output" \
'no_legacy_display:["original"]["body"][0]["content"][1]["content-type"]="text/plain"'
test_begin_subtest "do not treat legacy-display part as body when indexing"
output=$(notmuch search --output=messages body:interrupting)
test_expect_equal "$output" ''
test_begin_subtest "identify message that had a legacy display part skipped during indexing"
output=$(notmuch search --output=messages property:index.repaired=skip-protected-headers-legacy-display)
test_expect_equal "$output" id:protected-with-legacy-display@crypto.notmuchmail.org
# TODO: test that a part that looks like a legacy-display in
# multipart/signed, but not encrypted, is indexed and not stripped.
# TODO: test that a legacy-display in a decrypted subpart (not in the
# cryptographic payload) is indexed and not stripped.
# TODO: test that a legacy-display inside multiple MIME layers that
# include an encryption layer (e.g. multipart/encrypted around
# multipart/signed) is stripped and not indexed.
test_done