84 lines
3.2 KiB
Diff
84 lines
3.2 KiB
Diff
From 56a724644b1ad9cb03745c10cca732715cdc79e9 Mon Sep 17 00:00:00 2001
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From: Sigurd Spieckermann <sigurd.spieckermann@gmail.com>
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Date: Fri, 26 May 2023 14:32:36 +0200
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Subject: [PATCH] fix f-string syntax error in code generation
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Reference:https://github.com/pallets/jinja/commit/56a724644b1ad9cb03745c10cca732715cdc79e9
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---
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Jinja2-3.1.3/CHANGES.rst | 3 +++
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Jinja2-3.1.3/src/jinja2/compiler.py | 7 ++++++-
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Jinja2-3.1.3/tests/test_compile.py | 19 +++++++++++++++++++
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3 files changed, 28 insertions(+), 1 deletion(-)
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diff --git a/Jinja2-3.1.3/CHANGES.rst b/Jinja2-3.1.3/CHANGES.rst
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index f70cacb..b0e9a77 100644
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--- a/Jinja2-3.1.3/CHANGES.rst
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+++ b/Jinja2-3.1.3/CHANGES.rst
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@@ -1,5 +1,8 @@
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.. currentmodule:: jinja2
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+- Escape template name before formatting it into error messages, to avoid
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+ issues with names that contain f-string syntax.
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+ :issue:`1792`, :ghsa:`gmj6-6f8f-6699`
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- The ``xmlattr`` filter does not allow keys with ``/`` solidus, ``>``
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greater-than sign, or ``=`` equals sign, in addition to disallowing spaces.
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Regardless of any validation done by Jinja, user input should never be used
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diff --git a/Jinja2-3.1.3/src/jinja2/compiler.py b/Jinja2-3.1.3/src/jinja2/compiler.py
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index ff95c80..1ebdcd9 100644
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--- a/Jinja2-3.1.3/src/jinja2/compiler.py
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+++ b/Jinja2-3.1.3/src/jinja2/compiler.py
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@@ -1121,9 +1121,14 @@ class CodeGenerator(NodeVisitor):
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)
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self.writeline(f"if {frame.symbols.ref(alias)} is missing:")
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self.indent()
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+ # The position will contain the template name, and will be formatted
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+ # into a string that will be compiled into an f-string. Curly braces
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+ # in the name must be replaced with escapes so that they will not be
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+ # executed as part of the f-string.
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+ position = self.position(node).replace("{", "{{").replace("}", "}}")
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message = (
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"the template {included_template.__name__!r}"
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- f" (imported on {self.position(node)})"
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+ f" (imported on {position})"
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f" does not export the requested name {name!r}"
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)
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self.writeline(
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diff --git a/Jinja2-3.1.3/tests/test_compile.py b/Jinja2-3.1.3/tests/test_compile.py
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index 42a773f..b33a877 100644
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--- a/Jinja2-3.1.3/tests/test_compile.py
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+++ b/Jinja2-3.1.3/tests/test_compile.py
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@@ -1,6 +1,9 @@
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import os
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import re
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+import pytest
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+
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+from jinja2 import UndefinedError
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from jinja2.environment import Environment
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from jinja2.loaders import DictLoader
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@@ -26,3 +29,19 @@ def test_import_as_with_context_deterministic(tmp_path):
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expect = [f"'bar{i}': " for i in range(10)]
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found = re.findall(r"'bar\d': ", content)[:10]
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assert found == expect
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+
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+
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+def test_undefined_import_curly_name():
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+ env = Environment(
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+ loader=DictLoader(
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+ {
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+ "{bad}": "{% from 'macro' import m %}{{ m() }}",
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+ "macro": "",
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+ }
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+ )
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+ )
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+
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+ # Must not raise `NameError: 'bad' is not defined`, as that would indicate
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+ # that `{bad}` is being interpreted as an f-string. It must be escaped.
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+ with pytest.raises(UndefinedError):
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+ env.get_template("{bad}").render()
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--
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2.33.0
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