test/crypto: add test for corrupted signatures

[notmuch] / test / T350-crypto.sh

diff --git a/test/T350-crypto.sh b/test/T350-crypto.sh
index 3cf644df6fac781dc33a75804494a82522adad3e..7de0ed6a91013e680997ba2767b0279176de20ad 100755 (executable)
--- a/test/T350-crypto.sh
+++ b/test/T350-crypto.sh
@@ -11,6 +11,8 @@ add_gnupg_home ()
 {
     local output
     [ -d ${GNUPGHOME} ] && return
+    _gnupg_exit () { gpgconf --kill all 2>/dev/null || true; }
+    at_exit_function _gnupg_exit
     mkdir -m 0700 "$GNUPGHOME"
     gpg --no-tty --import <$TEST_DIRECTORY/gnupg-secret-key.asc >"$GNUPGHOME"/import.log 2>&1
     test_debug "cat $GNUPGHOME/import.log"
@@ -66,6 +68,88 @@ test_expect_equal_json \
     "$output" \
     "$expected"
 
+test_begin_subtest "detection of modified signed contents"
+emacs_fcc_message \
+    "bad signed message 001" \
+    "Incriminating stuff. This is a test signed message." \
+    "(mml-secure-message-sign)"
+
+file=$(notmuch search --output=files subject:"bad signed message 001")
+
+sed -i 's/Incriminating stuff. //' ${file}
+
+output=$(notmuch show --format=json --verify subject:"bad signed message 001" \
+    | notmuch_json_show_sanitize \
+    | sed -e 's|"created": [1234567890]*|"created": 946728000|')
+expected='[[[{"id": "XXXXX",
+ "match": true,
+ "excluded": false,
+ "filename": ["YYYYY"],
+ "timestamp": 946728000,
+ "date_relative": "2000-01-01",
+ "tags": ["inbox","signed"],
+ "headers": {"Subject": "bad signed message 001",
+ "From": "Notmuch Test Suite <test_suite@notmuchmail.org>",
+ "To": "test_suite@notmuchmail.org",
+ "Date": "Sat, 01 Jan 2000 12:00:00 +0000"},
+ "body": [{"id": 1,
+ "sigstatus": [{"status": "bad",
+ "keyid": "'$(echo $FINGERPRINT | cut -c 25-)'"}],
+ "content-type": "multipart/signed",
+ "content": [{"id": 2,
+ "content-type": "text/plain",
+ "content": "This is a test signed message.\n"},
+ {"id": 3,
+ "content-type": "application/pgp-signature",
+ "content-length": "NONZERO"}]}]},
+ []]]]'
+test_expect_equal_json \
+    "$output" \
+    "$expected"
+
+test_begin_subtest "corrupted pgp/mime signature"
+emacs_fcc_message \
+    "bad signed message 002" \
+    "Incriminating stuff. This is a test signed message." \
+    "(mml-secure-message-sign)"
+
+file=$(notmuch search --output=files subject:"bad signed message 002")
+
+awk '/-----BEGIN PGP SIGNATURE-----/{flag=1;print;next} \
+     /-----END PGP SIGNATURE-----/{flag=0;print;next} \
+     flag{gsub(/[A-Za-z]/,"0");print}!flag{print}' $file > $file.new
+
+rm $file
+mv $file.new $file
+
+output=$(notmuch show --format=json --verify subject:"bad signed message 002" \
+    | notmuch_json_show_sanitize \
+    | sed -e 's|"created": [1234567890]*|"created": 946728000|')
+expected='[[[{"id": "XXXXX",
+ "match": true,
+ "excluded": false,
+ "filename": ["YYYYY"],
+ "timestamp": 946728000,
+ "date_relative": "2000-01-01",
+ "tags": ["inbox","signed"],
+ "headers": {"Subject": "bad signed message 002",
+ "From": "Notmuch Test Suite <test_suite@notmuchmail.org>",
+ "To": "test_suite@notmuchmail.org",
+ "Date": "Sat, 01 Jan 2000 12:00:00 +0000"},
+ "body": [{"id": 1,
+ "sigstatus": [],
+ "content-type": "multipart/signed",
+ "content": [{"id": 2,
+ "content-type": "text/plain",
+ "content": "Incriminating stuff. This is a test signed message.\n"},
+ {"id": 3,
+ "content-type": "application/pgp-signature",
+ "content-length": "NONZERO"}]}]},
+ []]]]'
+test_expect_equal_json \
+    "$output" \
+    "$expected"
+
 test_begin_subtest "signature verification with full owner trust"
 # give the key full owner trust
 echo "${FINGERPRINT}:6:" | gpg --no-tty --import-ownertrust >>"$GNUPGHOME"/trust.log 2>&1
@@ -121,7 +205,7 @@ expected='[[[{"id": "XXXXX",
  "body": [{"id": 1,
  "sigstatus": [{"status": "error",
  "keyid": "'$(echo $FINGERPRINT | cut -c 25-)'",
- "errors": 2}],
+ "errors": {"key-missing": true}}],
  "content-type": "multipart/signed",
  "content": [{"id": 2,
  "content-type": "text/plain",
@@ -233,7 +317,7 @@ notmuch show \
     --part=5 \
     --decrypt \
     subject:"test encrypted message 001" >OUTPUT
-test_expect_equal_file OUTPUT TESTATTACHMENT
+test_expect_equal_file TESTATTACHMENT OUTPUT
 
 test_begin_subtest "decryption failure with missing key"
 mv "${GNUPGHOME}"{,.bak}
@@ -365,7 +449,7 @@ expected='[[[{"id": "XXXXX",
  "body": [{"id": 1,
  "sigstatus": [{"status": "error",
  "keyid": "6D92612D94E46381",
- "errors": 8}],
+ "errors": {"key-revoked": true}}],
  "content-type": "multipart/signed",
  "content": [{"id": 2,
  "content-type": "text/plain",