Coverage Report

Created: 2025-06-13 06:09

/src/uWebSockets/fuzzing/Extensions.cpp
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Source (jump to first uncovered line)
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/* This is a fuzz test of the websocket extensions parser */
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#define WIN32_EXPORT
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#include <cstdio>
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#include <string>
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#include <cstdlib>
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/* We test the websocket extensions parser */
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#include "../src/WebSocketExtensions.h"
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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    /* This one must not return shared compressor, or above 13 */
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    {
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        auto [negCompression, negCompressionWindow, negInflationWindow, response] = uWS::negotiateCompression(true, 13, 0, std::string_view((char *) data, size));
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        if (negCompression) {
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            /* If we want dedicated compression, we must not end up here! */
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            free((void *) (negCompressionWindow == 0));
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            /* Some more checks (freeing 0 does nothing) */
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            free((void *) (negCompressionWindow > 13));
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            free((void *) (negInflationWindow != 0));
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            free((void *) (negInflationWindow < 0 || negInflationWindow > 15 || negCompressionWindow < 0 || negCompressionWindow > 15));
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        }
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    }
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    /* This one must not return anything over 0 (only shared) */
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    {
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        auto [negCompression, negCompressionWindow, negInflationWindow, response] = uWS::negotiateCompression(true, 0, 0, std::string_view((char *) data, size));
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        if (negCompression) {
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            /* If we want shared compression, we must not end up here! */
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            free((void *) (negCompressionWindow != 0));
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        }
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    }
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    /* Whatever, this one must not negotiate anything */
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    {
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        auto [negCompression, negCompressionWindow, negInflationWindow, response] = uWS::negotiateCompression(false, 13, 15, std::string_view((char *) data, size));
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        if (negCompression) {
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0
            free((void *) -1);
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0
        }
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    }
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    return 0;
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}
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