aiohttp: enable analysis of Pure python code (#7761)

This is in addition to the existing fuzzers that analyse compiled code.

3 files changed, 17 insertions, 0 deletions

diff --git a/projects/aiohttp/build.sh b/projects/aiohttp/build.sh
index 17023bba..b75f0cdc 100755
--- a/projects/aiohttp/build.sh
+++ b/projects/aiohttp/build.sh
@@ -22,6 +22,13 @@ pip3 install -r requirements/dev.txt
 pre-commit install
 make install-dev
 
+# Duplicate fuzzers to use Pure python code (in addition
+# to the existing C-compiled code).
+cp fuzz_http_parser.py fuzz_http_parser_pure_python.py
+sed -i 's/AIOHTTP_VAL=0/AIOHTTP_VAL=1/g' fuzz_http_parser_pure_python.py
+cp fuzz_http_payload_parser.py fuzz_http_payload_parser_pure_python.py
+sed -i 's/AIOHTTP_VAL=0/AIOHTTP_VAL=1/g' fuzz_http_payload_parser_pure_python.py
+
 # Build fuzzers in $OUT.
 for fuzzer in $(find $SRC -name 'fuzz_*.py'); do
   compile_python_fuzzer $fuzzer
diff --git a/projects/aiohttp/fuzz_http_parser.py b/projects/aiohttp/fuzz_http_parser.py
index 93c078ab..2d0a3057 100644
--- a/projects/aiohttp/fuzz_http_parser.py
+++ b/projects/aiohttp/fuzz_http_parser.py
@@ -13,6 +13,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+import os
+AIOHTTP_VAL=0
+os.environ["AIOHTTP_NO_EXTENSIONS"] = str(AIOHTTP_VAL)
+
 import sys
 import atheris
 
@@ -30,6 +35,7 @@ def TestOneInput(data):
     h_p = aiohttp.http_parser.HttpRequestParser(pr, loop, 32768)
     try:
         h_p.feed_data(data)
+        h_p.feed_eof()
     except aiohttp.http_exceptions.HttpProcessingError:
         None
 
diff --git a/projects/aiohttp/fuzz_http_payload_parser.py b/projects/aiohttp/fuzz_http_payload_parser.py
index f48b2f77..2be93446 100644
--- a/projects/aiohttp/fuzz_http_payload_parser.py
+++ b/projects/aiohttp/fuzz_http_payload_parser.py
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import os
+AIOHTTP_VAL=0
+os.environ["AIOHTTP_NO_EXTENSIONS"] = str(AIOHTTP_VAL)
+
 import sys
 import atheris