[inih] Fix Issue 68332 (#11836)

Fix issue
[68332](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=68332) .

Signed-off-by: Arjun <[email protected]>

projects/inih/Dockerfile

@@ -15,6 +15,7 @@
 ################################################################################
 FROM gcr.io/oss-fuzz-base/base-builder
 RUN apt-get update
-RUN git clone https://github.com/benhoyt/inih
-COPY build.sh $SRC/
+RUN git clone https://github.com/benhoyt/inih.git
+COPY inihfuzz.c $SRC/inih/inihfuzz.c
+COPY build.sh $SRC/build.sh
 WORKDIR $SRC/inih/

projects/inih/build.sh

@@ -1,5 +1,5 @@
 #!/bin/bash -eu
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,10 +14,13 @@
 # limitations under the License.
 #
 ################################################################################
-pushd fuzzing/
-bash oss-fuzz.sh
-cp inihfuzz $OUT/
-popd
 
+# Compile the fuzzer binary for oss-fuzz infrastructure.
+$CC $CFLAGS -c ini.c
+$CC $CFLAGS -c inihfuzz.c
+$CXX $CFLAGS $LIB_FUZZING_ENGINE inihfuzz.o ini.o -o inihfuzz
+
+# Setup for oss-fuzz infrastructure.
+cp inihfuzz $OUT/
 zip -r inihfuzz_seed_corpus.zip tests/*.ini
 mv inihfuzz_seed_corpus.zip $OUT/

projects/inih/inihfuzz.c

@@ -0,0 +1,59 @@
+// Copyright 2024 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "ini.h"
+
+#define kMinInputLength 8
+#define kMaxInputLength 512
+
+int User;
+char Prev_section[50];
+
+int dumper(void* user, const char* section, const char* name,
+           const char* value)
+{
+    User = *((int*)user);
+    if (strcmp(section, Prev_section)) {
+        strncpy(Prev_section, section, sizeof(Prev_section));
+        Prev_section[sizeof(Prev_section) - 1] = '\0';
+    }
+    return 1;
+}
+
+extern int LLVMFuzzerTestOneInput(const char *data, size_t size) {
+    if (size < kMinInputLength || size > kMaxInputLength) {
+        return 0;
+    }
+
+    int e;
+    static int u = 100;
+    Prev_section[0] = '\0';
+
+    char *data_in = malloc(size + 1);
+    if (!data_in) return 0; // Just in case malloc fails
+
+    memcpy(data_in, data, size);
+    data_in[size] = '\0';
+
+    e = ini_parse_string(data_in, dumper, &u);
+
+    free(data_in);
+
+    return e;
+}

projects/inih/project.yaml

@@ -2,7 +2,7 @@ homepage: "https://github.com/benhoyt/inih"
 language: c
 primary_contact: "[email protected]"
 auto_ccs:
-  - "ajsinghyadav00@gmail.com"
+  - "pkillarjun@protonmail.com"
 fuzzing_engines:
   - libfuzzer
   - afl