added full path to tox

use tox for chatmaild non-online tests

.github/workflows/ci.yaml

@@ -5,14 +5,27 @@ on:
   push:
 
 jobs:
-  lint:
+  tox:
-    name: Lint
+    name: chatmail tests
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Lint chatmaild
+      - name: run chatmaild tests 
         working-directory: chatmaild
         run: pipx run tox
-      - name: Lint deploy-chatmail
+      - name: run deploy-chatmail offline tests 
         working-directory: deploy-chatmail
         run: pipx run tox
+      - name: run deploy-chatmail offline tests 
+        working-directory: deploy-chatmail
+        run: pipx run tox
+
+  scripts:
+    name: chatmail script invocations 
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: run init.sh 
+        run: ./scripts/init.sh 
+      - name: run test.sh 
+        run: ./scripts/test.sh 

chatmaild/pyproject.toml

@@ -20,7 +20,7 @@ addopts = "-v -ra --strict-markers"
 legacy_tox_ini = """
 [tox]
 isolated_build = true
-envlist = lint
+envlist = lint,py
 
 [testenv:lint]
 skipdist = True
@@ -31,4 +31,10 @@ deps =
 commands =
   black --quiet --check --diff src/
   ruff src/
+
+[testenv]
+passenv = CHATMAIL_DOMAIN
+deps = pytest 
+       pdbpp 
+commands = pytest -v -rsXx {posargs: ../tests/chatmaild}
 """

chatmaild/src/chatmaild/filtermail.py

@@ -34,6 +34,34 @@ def check_encrypted(message):
     return True
 
 
+def check_mdn(message, envelope):
+    if len(envelope.rcpt_tos) != 1:
+        return False
+
+    for name in ["auto-submitted", "chat-version"]:
+        if not message.get(name):
+            return False
+
+    if message.get_content_type() != "multipart/report":
+        return False
+
+    body = message.get_body()
+    if body.get_content_type() != "text/plain":
+        return False
+
+    if list(body.iter_attachments()) or list(body.iter_parts()):
+        return False
+
+    # even with all mime-structural checks an attacker
+    # could try to abuse the subject or body to contain links or other
+    # annoyance -- we skip on checking subject/body for now as Delta Chat
+    # should evolve to create E2E-encrypted read receipts anyway.
+    # and then MDNs are just encrypted mail and can pass the border
+    # to other instances.
+
+    return True
+
+
 class SMTPController(Controller):
     def factory(self):
         return SMTP(self.handler, **self.SMTP_kwargs)
@@ -82,6 +110,9 @@ def check_DATA(envelope):
     if envelope.mail_from.lower() != from_addr.lower():
         return f"500 Invalid FROM <{from_addr!r}> for <{envelope.mail_from!r}>"
 
+    if not mail_encrypted and check_mdn(message, envelope):
+        return
+
     envelope_from_domain = from_addr.split("@").pop()
     for recipient in envelope.rcpt_tos:
         if envelope.mail_from == recipient:

chatmaild/src/chatmaild/test_filtermail.py

@@ -1,338 +0,0 @@
-from .filtermail import check_encrypted, check_DATA, SendRateLimiter
-from email.parser import BytesParser
-from email import policy
-import pytest
-
-
-def test_reject_forged_from():
-    def makemail(from_addr):
-        return BytesParser(policy=policy.default).parsebytes(
-            "\r\n".join(
-                [
-                    f"From: <{from_addr}",
-                    "To: <barbaz@c3.testrun.org>",
-                    "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                    "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                    "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                    "Chat-Version: 1.0",
-                    "MIME-Version: 1.0",
-                    "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                    "",
-                    "Hi!",
-                    "",
-                    "",
-                ]
-            ).encode()
-        )
-
-    class envelope:
-        mail_from = "bob@c3.testrun.org"
-        rcpt_tos = ["somebody@c3.testrun.org"]
-
-    # test that the filter lets good mail through
-    envelope.content = makemail(envelope.mail_from).as_bytes()
-    assert not check_DATA(envelope=envelope)
-
-    # test that the filter rejects forged mail
-    envelope.content = makemail("forged@c3.testrun.org").as_bytes()
-    error = check_DATA(envelope=envelope)
-    assert "500" in error
-
-
-def test_filtermail():
-    def check_encrypted_bstr(content):
-        message = BytesParser(policy=policy.default).parsebytes(content)
-        return check_encrypted(message)
-
-    assert not check_encrypted_bstr(b"foo")
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "Hi!",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "Hi!",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    # https://xkcd.com/1181/
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "Hi!",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: ...",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:21 +0000",
-                "Message-ID: <Mr.UVyJWZmkCKM.hGzNc6glBE_@c2.testrun.org>",
-                "In-Reply-To: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "\t<Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=barbaz@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSwWjhYJKwYBBAHaRw8BAQdAQBEhqeJh0GueHB6kF/DUQqYCxARNBVokg/AzT+7LqH",
-                "\trNFzxiYXJiYXpAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUsFo4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX9A4AEAnHWHp49eBCMHK5t66gYPiW",
-                "\tXQuB1mwUjzGfYWB+0RXUoA/0xcQ3FbUNlGKW7Blp6eMFfViv6Mv2d3kNSXACB6nmcMzjgEZSwWjhIK",
-                "\tKwYBBAGXVQEFAQEHQBpY5L2M1XHo0uxf8SX1wNLBp/OVvidoWHQF2Jz+kJsUAwEIB8J4BBgWCAAgBQ",
-                "\tJlLBaOAhsMFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX/INgEA37AJaNvruYsJVanP",
-                "\tIXnYw4CKd55UAwl8Zcy+M2diAbkA/0fHHcGV4r78hpbbL1Os52DPOdqYQRauIeJUeG+G6bQO",
-                "MIME-Version: 1.0",
-                'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted";',
-                '\tboundary="YFrteb74qSXmggbOxZL9dRnhymywAi"',
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: PGP/MIME version identification",
-                "Content-Type: application/pgp-encrypted",
-                "",
-                "Version: 1",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: OpenPGP encrypted message",
-                'Content-Disposition: inline; filename="encrypted.asc";',
-                'Content-Type: application/octet-stream; name="encrypted.asc"',
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "",
-                "wU4DhW3gBZ/VvCYSAQdA8bMs2spwbKdGjVsL1ByPkNrqD7frpB73maeL6I6SzDYg",
-                "O5G53tv339RdKq3WRcCtEEvxjHlUx2XNwXzC04BpmfvBTgNfPUyLDzjXnxIBB0Ae",
-                "8ymwGvXMCCimHXN0Dg8Ui62KOi03h0UgheoHWovJSCDF4CKre/xtFr3nL7lq/PKI",
-                "JsjVNz7/RK9FSXF6WwfONtLCyQGEuVAsB/KXfCBEyfKhaMwGHvhujRidGW5uV1no",
-                "lMGl3ODmo29Lgeu2uSE7EpJRZoe6hU6ddmBkqxax61ZtkaFlGFFpdo2K8balNNdz",
-                "ZsJ/9mmI9x3oOJ4/l1nhQbUO9ADbs7gJhFdV5Qkp30b5fCI7bU+aoe1ccBbLe/WM",
-                "YUty1PqcuQT7XjA+XmYuL261tvW8pBetT+i33/E2d8PzzYt2IuK9qeevyS+yxdwA",
-                "kfwejFWzzsUlJaDxs1x4XOxkMgSj+jo+g12dFOb7fyClsAnq23iDb8AuaT/BScAI",
-                "+lO+gher69+6LmM7VGHLG5k762J1jTaQCaKt1s8TAWV99Eo4491vL6fyvk3l/Cfg",
-                "RXSwiWFgj19Pn0Rq7CD9v22UE2vdUMBTcV4aw79mClk1YQ23jbF0y5DCjPdJ62Zo",
-                "tskBgFt3NoWV80jZ76zIBLrrjLwCCll8JjJtFwSkt2GX5RFBsVa4A8IDht9RtEk7",
-                "rrHgbSZQfkauEi/mH3/6CDZoLqSHudUZ7d4MaJwun1TkFYGe2ORwGJd4OBj3oGJp",
-                "H8YBwCpk///L/fKjX0Gg3M8nrpM4wrRFhPKidAgO/kcm25X4+ZHlVkWBTCt5RWKI",
-                "fHh6oLDZCqCfcgMkE1KKmwfIHaUkhq5BPRigwy6i5dh1DM4+1UCLh3dxzVbqE9b9",
-                "61NB19nXdRtDA2sOUnj9ve6m/wEPyCb6/zBQZqvCBYb1/AjdXpUrFT+DbpfyxaXN",
-                "XfhDVb5mNqNM/IVj0V5fvTc6vOfYbzQtPm10H+FdWWfb+rJRfyC3MA2w2IqstFe3",
-                "w3bu2iE6CQvSqRvge+ZqLKt/NqYwOURiUmpuklbl3kPJ97+mfKWoiqk8Iz1VY+bb",
-                "NMUC7aoGv+jcoj+WS6PYO8N6BeRVUUB3ZJSf8nzjgxm1/BcM+UD3BPrlhT11ODRs",
-                "baifGbprMWwt3dhb8cQgRT8GPdpO1OsDkzL6iikMjLHWWiA99GV6ruiHsIPw6boW",
-                "A6/uSOskbDHOROotKmddGTBd0iiHXAoQsJFt1ZjUkt6EHrgWs+GAvrvKpXs1mrz8",
-                "uj3GwEFrHS+Xuf2UDgpszYT3hI2cL/kUtGakVR7m7vVMZqXBUbZdGAEb1PZNPwsI",
-                "E4aMK02+EVB+tSN4Fzj99N2YD0inVYt+oPjr2tHhUS6aSGBNS/48Ki47DOg4Sxkn",
-                "lkOWnEbCD+XTnbDd",
-                "=agR5",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: Buy Penis Enlargement at www.malicious-domain.com",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:21 +0000",
-                "Message-ID: <Mr.UVyJWZmkCKM.hGzNc6glBE_@c2.testrun.org>",
-                "In-Reply-To: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "\t<Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=barbaz@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSwWjhYJKwYBBAHaRw8BAQdAQBEhqeJh0GueHB6kF/DUQqYCxARNBVokg/AzT+7LqH",
-                "\trNFzxiYXJiYXpAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUsFo4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX9A4AEAnHWHp49eBCMHK5t66gYPiW",
-                "\tXQuB1mwUjzGfYWB+0RXUoA/0xcQ3FbUNlGKW7Blp6eMFfViv6Mv2d3kNSXACB6nmcMzjgEZSwWjhIK",
-                "\tKwYBBAGXVQEFAQEHQBpY5L2M1XHo0uxf8SX1wNLBp/OVvidoWHQF2Jz+kJsUAwEIB8J4BBgWCAAgBQ",
-                "\tJlLBaOAhsMFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX/INgEA37AJaNvruYsJVanP",
-                "\tIXnYw4CKd55UAwl8Zcy+M2diAbkA/0fHHcGV4r78hpbbL1Os52DPOdqYQRauIeJUeG+G6bQO",
-                "MIME-Version: 1.0",
-                'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted";',
-                '\tboundary="YFrteb74qSXmggbOxZL9dRnhymywAi"',
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: PGP/MIME version identification",
-                "Content-Type: application/pgp-encrypted",
-                "",
-                "Version: 1",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: OpenPGP encrypted message",
-                'Content-Disposition: inline; filename="encrypted.asc";',
-                'Content-Type: application/octet-stream; name="encrypted.asc"',
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "",
-                "wU4DhW3gBZ/VvCYSAQdA8bMs2spwbKdGjVsL1ByPkNrqD7frpB73maeL6I6SzDYg",
-                "O5G53tv339RdKq3WRcCtEEvxjHlUx2XNwXzC04BpmfvBTgNfPUyLDzjXnxIBB0Ae",
-                "8ymwGvXMCCimHXN0Dg8Ui62KOi03h0UgheoHWovJSCDF4CKre/xtFr3nL7lq/PKI",
-                "JsjVNz7/RK9FSXF6WwfONtLCyQGEuVAsB/KXfCBEyfKhaMwGHvhujRidGW5uV1no",
-                "lMGl3ODmo29Lgeu2uSE7EpJRZoe6hU6ddmBkqxax61ZtkaFlGFFpdo2K8balNNdz",
-                "ZsJ/9mmI9x3oOJ4/l1nhQbUO9ADbs7gJhFdV5Qkp30b5fCI7bU+aoe1ccBbLe/WM",
-                "YUty1PqcuQT7XjA+XmYuL261tvW8pBetT+i33/E2d8PzzYt2IuK9qeevyS+yxdwA",
-                "kfwejFWzzsUlJaDxs1x4XOxkMgSj+jo+g12dFOb7fyClsAnq23iDb8AuaT/BScAI",
-                "+lO+gher69+6LmM7VGHLG5k762J1jTaQCaKt1s8TAWV99Eo4491vL6fyvk3l/Cfg",
-                "RXSwiWFgj19Pn0Rq7CD9v22UE2vdUMBTcV4aw79mClk1YQ23jbF0y5DCjPdJ62Zo",
-                "tskBgFt3NoWV80jZ76zIBLrrjLwCCll8JjJtFwSkt2GX5RFBsVa4A8IDht9RtEk7",
-                "rrHgbSZQfkauEi/mH3/6CDZoLqSHudUZ7d4MaJwun1TkFYGe2ORwGJd4OBj3oGJp",
-                "H8YBwCpk///L/fKjX0Gg3M8nrpM4wrRFhPKidAgO/kcm25X4+ZHlVkWBTCt5RWKI",
-                "fHh6oLDZCqCfcgMkE1KKmwfIHaUkhq5BPRigwy6i5dh1DM4+1UCLh3dxzVbqE9b9",
-                "61NB19nXdRtDA2sOUnj9ve6m/wEPyCb6/zBQZqvCBYb1/AjdXpUrFT+DbpfyxaXN",
-                "XfhDVb5mNqNM/IVj0V5fvTc6vOfYbzQtPm10H+FdWWfb+rJRfyC3MA2w2IqstFe3",
-                "w3bu2iE6CQvSqRvge+ZqLKt/NqYwOURiUmpuklbl3kPJ97+mfKWoiqk8Iz1VY+bb",
-                "NMUC7aoGv+jcoj+WS6PYO8N6BeRVUUB3ZJSf8nzjgxm1/BcM+UD3BPrlhT11ODRs",
-                "baifGbprMWwt3dhb8cQgRT8GPdpO1OsDkzL6iikMjLHWWiA99GV6ruiHsIPw6boW",
-                "A6/uSOskbDHOROotKmddGTBd0iiHXAoQsJFt1ZjUkt6EHrgWs+GAvrvKpXs1mrz8",
-                "uj3GwEFrHS+Xuf2UDgpszYT3hI2cL/kUtGakVR7m7vVMZqXBUbZdGAEb1PZNPwsI",
-                "E4aMK02+EVB+tSN4Fzj99N2YD0inVYt+oPjr2tHhUS6aSGBNS/48Ki47DOg4Sxkn",
-                "lkOWnEbCD+XTnbDd",
-                "=agR5",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: Message opened",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:25 +0000",
-                "Message-ID: <Mr.78MWtlV7RAi.goCFzBhCYfy@c2.testrun.org>",
-                "Auto-Submitted: auto-replied",
-                "Chat-Version: 1.0",
-                "MIME-Version: 1.0",
-                "Content-Type: multipart/report; report-type=disposition-notification;",
-                '\tboundary="Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi"',
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                'The "Hi!" message you sent was displayed on the screen of the recipient.',
-                "",
-                "This is no guarantee the content was read.",
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi",
-                "Content-Type: message/disposition-notification",
-                "",
-                "Reporting-UA: Delta Chat 1.124.1",
-                "Original-Recipient: rfc822;barbaz@c2.testrun.org",
-                "Final-Recipient: rfc822;barbaz@c2.testrun.org",
-                "Original-Message-ID: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Disposition: manual-action/MDN-sent-automatically; displayed",
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-
-def test_send_rate_limiter():
-    limiter = SendRateLimiter()
-    for i in range(100):
-        if limiter.is_sending_allowed("some@example.org"):
-            if i <= SendRateLimiter.MAX_USER_SEND_PER_MINUTE:
-                continue
-            pytest.fail("limiter didn't work")
-        else:
-            assert i == SendRateLimiter.MAX_USER_SEND_PER_MINUTE + 1
-            break

online-tests/pytest.ini

@@ -1,3 +0,0 @@
-[pytest]
-addopts = -vrsx --strict-markers
-markers = slow: mark test as slow (requires --slow option to run)

scripts/init.sh

@@ -1,13 +1,8 @@
 #!/bin/sh
 set -e
-python3 -m venv deploy-chatmail/venv
+python3 -m venv venv
-deploy-chatmail/venv/bin/pip install pyinfra pytest
+pip=venv/bin/pip
-deploy-chatmail/venv/bin/pip install -e deploy-chatmail
-deploy-chatmail/venv/bin/pip install -e chatmaild
 
-python3 -m venv chatmaild/venv
+$pip install pyinfra pytest build 'setuptools>=68' tox deltachat
-chatmaild/venv/bin/pip install --upgrade pytest build 'setuptools>=68'
+$pip install -e deploy-chatmail 
-chatmaild/venv/bin/pip install -e chatmaild
+$pip install -e chatmaild 
-
-python3 -m venv online-tests/venv
-online-tests/venv/bin/pip install pytest pytest-timeout pdbpp deltachat 

scripts/test.sh

@@ -1,3 +1,4 @@
 #!/bin/bash
-chatmaild/venv/bin/pytest chatmaild/ $@
+venv/bin/tox -c chatmaild
-online-tests/venv/bin/pytest online-tests/ -vrx --durations=5 $@
+venv/bin/tox -c deploy-chatmail
+venv/bin/pytest tests/online -vrx --durations=5 $@

tests/chatmaild/test_dictproxy.py

@@ -3,8 +3,8 @@ import os
 import pytest
 
 import chatmaild.dictproxy
-from .dictproxy import get_user_data, lookup_passdb
+from chatmaild.dictproxy import get_user_data, lookup_passdb
-from .database import Database, DBError
+from chatmaild.database import Database, DBError
 
 
 @pytest.fixture()

tests/chatmaild/test_filtermail.py

@@ -0,0 +1,82 @@
+from chatmaild.filtermail import check_encrypted, check_DATA, SendRateLimiter, check_mdn
+import pytest
+
+
+@pytest.fixture
+def maildomain():
+    # let's not depend on a real chatmail instance for the offline tests below
+    return "chatmail.example.org"
+
+
+def test_reject_forged_from(maildata, gencreds):
+    class env:
+        mail_from = gencreds()[0]
+        rcpt_tos = [gencreds()[0]]
+
+    # test that the filter lets good mail through
+    env.content = maildata("plain.eml", from_addr=env.mail_from).as_bytes()
+    assert not check_DATA(envelope=env)
+
+    # test that the filter rejects forged mail
+    env.content = maildata("plain.eml", from_addr="forged@c3.testrun.org").as_bytes()
+    error = check_DATA(envelope=env)
+    assert "500" in error
+
+
+def test_filtermail_no_encryption_detection(maildata):
+    msg = maildata("plain.eml")
+    assert not check_encrypted(msg)
+
+    # https://xkcd.com/1181/
+    msg = maildata("fake-encrypted.eml")
+    assert not check_encrypted(msg)
+
+
+def test_filtermail_encryption_detection(maildata):
+    msg = maildata("encrypted.eml")
+    assert check_encrypted(msg)
+
+    # if the subject is not "..." it is not considered ac-encrypted
+    msg.replace_header("Subject", "Click this link")
+    assert not check_encrypted(msg)
+
+
+def test_filtermail_is_mdn(maildata, gencreds):
+    from_addr = gencreds()[0]
+    to_addr = gencreds()[0] + ".other"
+    msg = maildata("mdn.eml", from_addr, to_addr)
+
+    class env:
+        mail_from = from_addr
+        rcpt_tos = [to_addr]
+        content = msg.as_bytes()
+
+    assert check_mdn(msg, env)
+    print(msg.as_string())
+    assert not check_DATA(env)
+
+
+def test_filtermail_to_multiple_recipients_no_mdn(maildata, gencreds):
+    from_addr = gencreds()[0]
+    to_addr = gencreds()[0] + ".other"
+    thirdaddr = gencreds()[0]
+    msg = maildata("mdn.eml", from_addr, to_addr)
+
+    class env:
+        mail_from = from_addr
+        rcpt_tos = [to_addr, thirdaddr]
+        content = msg.as_bytes()
+
+    assert not check_mdn(msg, env)
+
+
+def test_send_rate_limiter():
+    limiter = SendRateLimiter()
+    for i in range(100):
+        if limiter.is_sending_allowed("some@example.org"):
+            if i <= SendRateLimiter.MAX_USER_SEND_PER_MINUTE:
+                continue
+            pytest.fail("limiter didn't work")
+        else:
+            assert i == SendRateLimiter.MAX_USER_SEND_PER_MINUTE + 1
+            break

tests/conftest.py

@@ -6,10 +6,16 @@ import subprocess
 import imaplib
 import smtplib
 import itertools
+from email.parser import BytesParser
+from email import policy
+from pathlib import Path
 from math import ceil
 import pytest
 
 
+conftestdir = Path(__file__).parent
+
+
 def pytest_addoption(parser):
     parser.addoption(
         "--slow", action="store_true", default=False, help="also run slow tests"
@@ -18,6 +24,9 @@ def pytest_addoption(parser):
 
 def pytest_configure(config):
     config._benchresults = {}
+    config.addinivalue_line(
+        "markers", "slow: mark test to require --slow option to run"
+    )
 
 
 def pytest_runtest_setup(item):
@@ -79,8 +88,11 @@ def benchmark(request):
 def pytest_terminal_summary(terminalreporter):
     tr = terminalreporter
     results = tr.config._benchresults
+    if not results:
+        return
+
     tr.section("benchmark results")
-    float_names = 'median min max'.split()
+    float_names = "median min max".split()
     width = max(map(len, float_names))
 
     def fcol(parts):
@@ -275,13 +287,19 @@ class Remote:
 
 
 @pytest.fixture
-def mailgen(request):
+def maildata(request, gencreds):
-    class Mailgen:
+    datadir = conftestdir.joinpath("mail-data")
-        def get_encrypted(self, from_addr, to_addr):
-            data = request.fspath.dirpath("mailgen/encrypted.eml").read()
-            return data.format(from_addr=from_addr, to_addr=to_addr)
 
-    return Mailgen()
+    def maildata(name, from_addr=None, to_addr=None):
+        if from_addr is None:
+            from_addr = gencreds()[0]
+        if to_addr is None:
+            to_addr = gencreds()[0]
+        data = datadir.joinpath(name).read_text()
+        text = data.format(from_addr=from_addr, to_addr=to_addr)
+        return BytesParser(policy=policy.default).parsebytes(text.encode())
+
+    return maildata
 
 
 @pytest.fixture

tests/mail-data/fake-encrypted.eml

@@ -0,0 +1,25 @@
+Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=
+Chat-Disposition-Notification-To: foobar@c2.testrun.org
+Chat-User-Avatar: 0
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:41:44 +0000
+Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+Chat-Version: 1.0
+Autocrypt: addr={from_addr}; prefer-encrypt=mutual;
+	keydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m
+	nNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID
+	FgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I
+	HjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK
+	KwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ
+	JlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI
+	vYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+-----BEGIN PGP MESSAGE-----
+Hi!
+-----END PGP MESSAGE-----
+
+

tests/mail-data/mdn.eml

@@ -0,0 +1,33 @@
+Subject: Message opened
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:43:25 +0000
+Message-ID: <Mr.78MWtlV7RAi.goCFzBhCYfy@c2.testrun.org>
+Auto-Submitted: auto-replied
+Chat-Version: 1.0
+MIME-Version: 1.0
+Content-Type: multipart/report; report-type=disposition-notification;
+	boundary="Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi"
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+The "Hi!" message you sent was displayed on the screen of the recipient.
+
+This is no guarantee the content was read.
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi
+Content-Type: message/disposition-notification
+
+Reporting-UA: Delta Chat 1.124.1
+Original-Recipient: rfc822;barbaz@c2.testrun.org
+Final-Recipient: rfc822;barbaz@c2.testrun.org
+Original-Message-ID: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>
+Disposition: manual-action/MDN-sent-automatically; displayed
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi--
+
+

tests/mail-data/plain.eml

@@ -0,0 +1,23 @@
+Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=
+Chat-Disposition-Notification-To: foobar@c2.testrun.org
+Chat-User-Avatar: 0
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:41:44 +0000
+Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+Chat-Version: 1.0
+Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;
+	keydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m
+	nNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID
+	FgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I
+	HjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK
+	KwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ
+	JlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI
+	vYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+Hi!
+
+

tests/online/test_1_basic.py

@@ -20,7 +20,7 @@ def test_use_two_chatmailservers(cmfactory, maildomain2):
 
 
 @pytest.mark.parametrize("forgeaddr", ["internal", "someone@example.org"])
-def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
+def test_reject_forged_from(cmsetup, maildata, lp, forgeaddr):
     user1, user3 = cmsetup.gen_users(2)
 
     lp.sec("send encrypted message with forged from")
@@ -31,7 +31,8 @@ def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
         addr_to_forge = "someone@example.org"
 
     print("message to inject:")
-    msg = mailgen.get_encrypted(from_addr=addr_to_forge, to_addr=user3.addr)
+    msg = maildata("encrypted.eml", from_addr=addr_to_forge, to_addr=user3.addr)
+    msg = msg.as_string()
     for line in msg.split("\n")[:4]:
         print(f"   {line}")
 
@@ -42,10 +43,12 @@ def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
 
 
 @pytest.mark.slow
-def test_exceed_rate_limit(cmsetup, gencreds, mailgen):
+def test_exceed_rate_limit(cmsetup, gencreds, maildata):
     """Test that the per-account send-mail limit is exceeded."""
     user1, user2 = cmsetup.gen_users(2)
-    mail = mailgen.get_encrypted(user1.addr, user2.addr)
+    mail = maildata(
+        "encrypted.eml", from_addr=user1.addr, to_addr=user2.addr
+    ).as_string()
     for i in range(100):
         print("Sending mail", str(i))
         try:
@@ -55,6 +58,6 @@ def test_exceed_rate_limit(cmsetup, gencreds, mailgen):
                 pytest.fail(f"rate limit was exceeded too early with msg {i}")
             outcome = e.recipients[user2.addr]
             assert outcome[0] == 450
-            assert b'4.7.1: Too much mail from' in outcome[1]
+            assert b"4.7.1: Too much mail from" in outcome[1]
             return
     pytest.fail("Rate limit was not exceeded")

tests/online/test_2_deltachat.py

@@ -1,3 +1,4 @@
+import time
 import random
 import pytest
 
@@ -81,3 +82,29 @@ class TestEndToEndDeltaChat:
         ch = ac2.qr_setup_contact(qr)
         assert ch.id >= 10
         ac1._evtracker.wait_securejoin_inviter_progress(1000)
+
+    def test_read_receipts_between_instances(self, cmfactory, lp, maildomain2):
+        ac1 = cmfactory.new_online_configuring_account(cache=False)
+        cmfactory.switch_maildomain(maildomain2)
+        ac2 = cmfactory.new_online_configuring_account(cache=False)
+        cmfactory.bring_accounts_online()
+
+        lp.sec("setup encrypted comms between ac1 and ac2 on different instances")
+        qr = ac1.get_setup_contact_qr()
+        ch = ac2.qr_setup_contact(qr)
+        msg = ac2.wait_next_incoming_message()
+        assert "verified" in msg.text
+
+        lp.sec("ac1 sends a message and ac2 marks it as seen")
+        chat = ac1.create_chat(ac2)
+        msg = chat.send_text("hi")
+        m = ac2.wait_next_incoming_message()
+        m.mark_seen()
+        # we can only indirectly wait for mark-seen to cause an smtp-error
+        lp.sec("try to wait for markseen to complete and check error states")
+        deadline = time.time() + 3.1
+        while time.time() < deadline:
+            msgs = m.chat.get_messages()
+            for msg in msgs:
+                assert "error" not in m.get_message_info()
+            time.sleep(1)

tests/pytest.ini

@@ -0,0 +1,2 @@
+[pytest]
+addopts = -vrsx --strict-markers