Coverage Report

Created: 2026-09-14 07:02

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
12.9k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
12.9k
    static int paddedLength = 512 * 1024;
13
12.9k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
12.9k
    if (paddedLength < size) {
17
139
        delete [] padded;
18
139
        paddedLength = size;
19
139
        padded = new char [128 + paddedLength + 128];
20
139
    }
21
22
12.9k
    memcpy(padded + 128, data, size);
23
24
12.9k
    return (uint8_t *) padded + 128;
25
12.9k
}
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
3.08k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
3.08k
    static int paddedLength = 512 * 1024;
13
3.08k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
3.08k
    if (paddedLength < size) {
17
34
        delete [] padded;
18
34
        paddedLength = size;
19
34
        padded = new char [128 + paddedLength + 128];
20
34
    }
21
22
3.08k
    memcpy(padded + 128, data, size);
23
24
3.08k
    return (uint8_t *) padded + 128;
25
3.08k
}
PerMessageDeflate.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
312
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
312
    static int paddedLength = 512 * 1024;
13
312
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
312
    if (paddedLength < size) {
17
24
        delete [] padded;
18
24
        paddedLength = size;
19
24
        padded = new char [128 + paddedLength + 128];
20
24
    }
21
22
312
    memcpy(padded + 128, data, size);
23
24
312
    return (uint8_t *) padded + 128;
25
312
}
Http.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
8.07k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
8.07k
    static int paddedLength = 512 * 1024;
13
8.07k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
8.07k
    if (paddedLength < size) {
17
54
        delete [] padded;
18
54
        paddedLength = size;
19
54
        padded = new char [128 + paddedLength + 128];
20
54
    }
21
22
8.07k
    memcpy(padded + 128, data, size);
23
24
8.07k
    return (uint8_t *) padded + 128;
25
8.07k
}
26
27
/* Splits the fuzz data in one or many chunks */
28
12.9k
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
5.97M
    for (int i = 0; i < size; ) {
31
5.96M
        unsigned int chunkSize = data[i++];
32
5.96M
        if (!chunkSize) {
33
3.37k
            chunkSize = size - i;
34
5.95M
        } else {
35
5.95M
            chunkSize = std::min<int>(chunkSize, size - i);
36
5.95M
        }
37
38
5.96M
        cb(data + i, chunkSize);
39
5.96M
        i += chunkSize;
40
5.96M
    }
41
12.9k
}
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
219k
    for (int i = 0; i < size; ) {
31
218k
        unsigned int chunkSize = data[i++];
32
218k
        if (!chunkSize) {
33
492
            chunkSize = size - i;
34
217k
        } else {
35
217k
            chunkSize = std::min<int>(chunkSize, size - i);
36
217k
        }
37
38
218k
        cb(data + i, chunkSize);
39
218k
        i += chunkSize;
40
218k
    }
41
1.44k
}
TopicTree.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
3.08k
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
5.47M
    for (int i = 0; i < size; ) {
31
5.46M
        unsigned int chunkSize = data[i++];
32
5.46M
        if (!chunkSize) {
33
293
            chunkSize = size - i;
34
5.46M
        } else {
35
5.46M
            chunkSize = std::min<int>(chunkSize, size - i);
36
5.46M
        }
37
38
5.46M
        cb(data + i, chunkSize);
39
5.46M
        i += chunkSize;
40
5.46M
    }
41
3.08k
}
PerMessageDeflate.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
312
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
115k
    for (int i = 0; i < size; ) {
31
115k
        unsigned int chunkSize = data[i++];
32
115k
        if (!chunkSize) {
33
180
            chunkSize = size - i;
34
115k
        } else {
35
115k
            chunkSize = std::min<int>(chunkSize, size - i);
36
115k
        }
37
38
115k
        cb(data + i, chunkSize);
39
115k
        i += chunkSize;
40
115k
    }
41
312
}
Http.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
8.07k
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
165k
    for (int i = 0; i < size; ) {
31
157k
        unsigned int chunkSize = data[i++];
32
157k
        if (!chunkSize) {
33
2.40k
            chunkSize = size - i;
34
155k
        } else {
35
155k
            chunkSize = std::min<int>(chunkSize, size - i);
36
155k
        }
37
38
157k
        cb(data + i, chunkSize);
39
157k
        i += chunkSize;
40
157k
    }
41
8.07k
}
42
43
/* Reads all bytes to trigger invalid reads */
44
122k
static inline void readBytes(std::string_view s) {
45
122k
    volatile int sum = 0;
46
666k
    for (int i = 0; i < s.size(); i++) {
47
544k
        sum += s[i];
48
544k
    }
49
122k
}
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
122k
static inline void readBytes(std::string_view s) {
45
122k
    volatile int sum = 0;
46
666k
    for (int i = 0; i < s.size(); i++) {
47
544k
        sum += s[i];
48
544k
    }
49
122k
}
50
51
#endif