63 lines
1.5 KiB
C++
Vendored
63 lines
1.5 KiB
C++
Vendored
/*
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* 7-Zip format specific fuzzer for libarchive
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* Targets 7-Zip parsing and decompression code paths
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include <vector>
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#include "archive.h"
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#include "archive_entry.h"
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#include "fuzz_helpers.h"
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static constexpr size_t kMaxInputSize = 512 * 1024; // 512KB
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
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if (len == 0 || len > kMaxInputSize) {
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return 0;
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}
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struct archive *a = archive_read_new();
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if (a == NULL) {
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return 0;
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}
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// Enable 7-Zip format specifically
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archive_read_support_format_7zip(a);
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// Enable all filters for 7z internal compression
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archive_read_support_filter_all(a);
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// Set passphrase for encrypted archives
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archive_read_add_passphrase(a, "password");
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Buffer buffer = {buf, len, 0};
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if (archive_read_open(a, &buffer, NULL, reader_callback, NULL) != ARCHIVE_OK) {
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archive_read_free(a);
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return 0;
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}
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std::vector<uint8_t> data_buffer(4096, 0);
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struct archive_entry *entry;
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while (archive_read_next_header(a, &entry) == ARCHIVE_OK) {
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// Exercise entry metadata access
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archive_entry_pathname(entry);
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archive_entry_pathname_w(entry);
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archive_entry_size(entry);
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archive_entry_mtime(entry);
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archive_entry_mode(entry);
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archive_entry_is_encrypted(entry);
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archive_entry_is_data_encrypted(entry);
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archive_entry_is_metadata_encrypted(entry);
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// Read data
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ssize_t r;
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while ((r = archive_read_data(a, data_buffer.data(), data_buffer.size())) > 0)
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;
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}
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archive_read_free(a);
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return 0;
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}
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