Coverage Report

Created: 2026-07-28 06:56

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/uWebSockets/fuzzing/helpers.h
Line
Count
Source
1
#ifndef HELPERS_H
2
#define HELPERS_H
3
4
/* Common helpers for fuzzing */
5
6
#include <functional>
7
#include <string_view>
8
#include <cstring>
9
10
/* We use this to pad the fuzz */
11
11.0k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
11.0k
    static int paddedLength = 512 * 1024;
13
11.0k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
11.0k
    if (paddedLength < size) {
17
150
        delete [] padded;
18
150
        paddedLength = size;
19
150
        padded = new char [128 + paddedLength + 128];
20
150
    }
21
22
11.0k
    memcpy(padded + 128, data, size);
23
24
11.0k
    return (uint8_t *) padded + 128;
25
11.0k
}
WebSocket.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
1.44k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
1.44k
    static int paddedLength = 512 * 1024;
13
1.44k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
1.44k
    if (paddedLength < size) {
17
27
        delete [] padded;
18
27
        paddedLength = size;
19
27
        padded = new char [128 + paddedLength + 128];
20
27
    }
21
22
1.44k
    memcpy(padded + 128, data, size);
23
24
1.44k
    return (uint8_t *) padded + 128;
25
1.44k
}
TopicTree.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
3.03k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
3.03k
    static int paddedLength = 512 * 1024;
13
3.03k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
3.03k
    if (paddedLength < size) {
17
32
        delete [] padded;
18
32
        paddedLength = size;
19
32
        padded = new char [128 + paddedLength + 128];
20
32
    }
21
22
3.03k
    memcpy(padded + 128, data, size);
23
24
3.03k
    return (uint8_t *) padded + 128;
25
3.03k
}
PerMessageDeflate.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
308
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
308
    static int paddedLength = 512 * 1024;
13
308
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
308
    if (paddedLength < size) {
17
22
        delete [] padded;
18
22
        paddedLength = size;
19
22
        padded = new char [128 + paddedLength + 128];
20
22
    }
21
22
308
    memcpy(padded + 128, data, size);
23
24
308
    return (uint8_t *) padded + 128;
25
308
}
Http.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
6.30k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
6.30k
    static int paddedLength = 512 * 1024;
13
6.30k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
6.30k
    if (paddedLength < size) {
17
69
        delete [] padded;
18
69
        paddedLength = size;
19
69
        padded = new char [128 + paddedLength + 128];
20
69
    }
21
22
6.30k
    memcpy(padded + 128, data, size);
23
24
6.30k
    return (uint8_t *) padded + 128;
25
6.30k
}
26
27
/* Splits the fuzz data in one or many chunks */
28
11.0k
static inline void makeChunked(const uint8_t *data, size_t size, std::function<void(const uint8_t *data, size_t size)> cb) {
29
    /* First byte determines chunk size; 0 is all that remains, 1-255 is small chunk */
30
5.61M
    for (int i = 0; i < size; ) {
31
5.60M
        unsigned int chunkSize = data[i++];
32
5.60M
        if (!chunkSize) {
33
3.38k
            chunkSize = size - i;
34
5.60M
        } else {
35
5.60M
            chunkSize = std::min<int>(chunkSize, size - i);
36
5.60M
        }
37
38
5.60M
        cb(data + i, chunkSize);
39
5.60M
        i += chunkSize;
40
5.60M
    }
41
11.0k
}
WebSocket.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
1.44k
static inline void makeChunked(const uint8_t *data, size_t size, std::function<void(const uint8_t *data, size_t size)> cb) {
29
    /* First byte determines chunk size; 0 is all that remains, 1-255 is small chunk */
30
211k
    for (int i = 0; i < size; ) {
31
210k
        unsigned int chunkSize = data[i++];
32
210k
        if (!chunkSize) {
33
457
            chunkSize = size - i;
34
210k
        } else {
35
210k
            chunkSize = std::min<int>(chunkSize, size - i);
36
210k
        }
37
38
210k
        cb(data + i, chunkSize);
39
210k
        i += chunkSize;
40
210k
    }
41
1.44k
}
TopicTree.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
3.03k
static inline void makeChunked(const uint8_t *data, size_t size, std::function<void(const uint8_t *data, size_t size)> cb) {
29
    /* First byte determines chunk size; 0 is all that remains, 1-255 is small chunk */
30
5.14M
    for (int i = 0; i < size; ) {
31
5.14M
        unsigned int chunkSize = data[i++];
32
5.14M
        if (!chunkSize) {
33
249
            chunkSize = size - i;
34
5.14M
        } else {
35
5.14M
            chunkSize = std::min<int>(chunkSize, size - i);
36
5.14M
        }
37
38
5.14M
        cb(data + i, chunkSize);
39
5.14M
        i += chunkSize;
40
5.14M
    }
41
3.03k
}
PerMessageDeflate.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
308
static inline void makeChunked(const uint8_t *data, size_t size, std::function<void(const uint8_t *data, size_t size)> cb) {
29
    /* First byte determines chunk size; 0 is all that remains, 1-255 is small chunk */
30
66.8k
    for (int i = 0; i < size; ) {
31
66.5k
        unsigned int chunkSize = data[i++];
32
66.5k
        if (!chunkSize) {
33
164
            chunkSize = size - i;
34
66.3k
        } else {
35
66.3k
            chunkSize = std::min<int>(chunkSize, size - i);
36
66.3k
        }
37
38
66.5k
        cb(data + i, chunkSize);
39
66.5k
        i += chunkSize;
40
66.5k
    }
41
308
}
Http.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
6.30k
static inline void makeChunked(const uint8_t *data, size_t size, std::function<void(const uint8_t *data, size_t size)> cb) {
29
    /* First byte determines chunk size; 0 is all that remains, 1-255 is small chunk */
30
189k
    for (int i = 0; i < size; ) {
31
183k
        unsigned int chunkSize = data[i++];
32
183k
        if (!chunkSize) {
33
2.51k
            chunkSize = size - i;
34
180k
        } else {
35
180k
            chunkSize = std::min<int>(chunkSize, size - i);
36
180k
        }
37
38
183k
        cb(data + i, chunkSize);
39
183k
        i += chunkSize;
40
183k
    }
41
6.30k
}
42
43
/* Reads all bytes to trigger invalid reads */
44
163k
static inline void readBytes(std::string_view s) {
45
163k
    volatile int sum = 0;
46
3.12M
    for (int i = 0; i < s.size(); i++) {
47
2.95M
        sum += s[i];
48
2.95M
    }
49
163k
}
Unexecuted instantiation: WebSocket.cpp:readBytes(std::__1::basic_string_view<char, std::__1::char_traits<char> >)
Unexecuted instantiation: TopicTree.cpp:readBytes(std::__1::basic_string_view<char, std::__1::char_traits<char> >)
Unexecuted instantiation: PerMessageDeflate.cpp:readBytes(std::__1::basic_string_view<char, std::__1::char_traits<char> >)
Http.cpp:readBytes(std::__1::basic_string_view<char, std::__1::char_traits<char> >)
Line
Count
Source
44
163k
static inline void readBytes(std::string_view s) {
45
163k
    volatile int sum = 0;
46
3.12M
    for (int i = 0; i < s.size(); i++) {
47
2.95M
        sum += s[i];
48
2.95M
    }
49
163k
}
50
51
#endif