postfix: initial integration (#6775)

* postfix: initial integration

* postfix; fix build

* postfix: add Wietse`s email

* postfix: avoid warnings when compiling fuzzer

projects/postfix/Dockerfile

@@ -0,0 +1,22 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN apt-get update && apt-get install -y make autoconf automake libtool libdb-dev
+RUN git clone --depth=1 https://github.com/vdukhovni/postfix postfix
+WORKDIR postfix
+COPY build.sh $SRC/
+COPY *.c $SRC/

projects/postfix/build.sh

@@ -0,0 +1,32 @@
+#!/bin/bash -eu
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+#
+################################################################################
+
+cd postfix
+make makefiles CCARGS="${CFLAGS}"
+make
+BASE=$PWD
+
+# Compile fuzzers
+cd ${BASE}/src/global
+$CC $CFLAGS -DHAS_DEV_URANDOM -DSNAPSHOT -UUSE_DYNAMIC_LIBS -DDEF_SHLIB_DIR=\"no\" \
+               -UUSE_DYNAMIC_MAPS -I. -I../../include -DNO_EAI -DDEF_SMTPUTF8_ENABLE=\"no\" \
+                -g -O -DLINUX4 -Wformat -Wno-comment -fno-common -c $SRC/fuzz_tok822.c
+
+# Link fuzzers
+cd ${BASE}
+$CC $CFLAGS $LIB_FUZZING_ENGINE ./src/global/fuzz_tok822.o -o $OUT/fuzz_tok822 \
+  ./lib/libglobal.a ./lib/libutil.a

projects/postfix/fuzz_tok822.c

@@ -0,0 +1,49 @@
+/* Copyright 2021 Google LLC
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+      http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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.
+*/
+#include <sys_defs.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include <vstring.h>
+
+#include "lex_822.h"
+#include "quote_822_local.h"
+#include "tok822.h"
+
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    char *new_str = (char *)malloc(size+1);
+    if (new_str == NULL){
+        return 0;
+    }
+    memcpy(new_str, data, size);
+    new_str[size] = '\0';
+
+    VSTRING *vp = vstring_alloc(100);
+    TOK822 *list = NULL;
+    list = tok822_parse_limit(new_str, 10);
+    tok822_internalize(vp, list, TOK822_STR_DEFL);
+    tok822_externalize(vp, list,TOK822_STR_DEFL | TOK822_STR_TRNC);
+    tok822_externalize(vp, list,TOK822_STR_DEFL | TOK822_STR_LINE | TOK822_STR_TRNC);
+    tok822_free_tree(list);
+    vstring_free(vp);
+
+    free(new_str);
+    return 0;
+}

projects/postfix/project.yaml

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+homepage: "http://www.postfix.org/"
+language: c
+primary_contact: "wietse@gmail.com"
+main_repo: "https://github.com/vdukhovni/postfix"
+auto_ccs:
+  - "david@adalogics.com"
+sanitizers:
+  - address