Coverage Report

Created: 2026-03-24 07:00

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
11.2k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
11.2k
    static int paddedLength = 512 * 1024;
13
11.2k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
11.2k
    if (paddedLength < size) {
17
149
        delete [] padded;
18
149
        paddedLength = size;
19
149
        padded = new char [128 + paddedLength + 128];
20
149
    }
21
22
11.2k
    memcpy(padded + 128, data, size);
23
24
11.2k
    return (uint8_t *) padded + 128;
25
11.2k
}
WebSocket.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
1.48k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
1.48k
    static int paddedLength = 512 * 1024;
13
1.48k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
1.48k
    if (paddedLength < size) {
17
27
        delete [] padded;
18
27
        paddedLength = size;
19
27
        padded = new char [128 + paddedLength + 128];
20
27
    }
21
22
1.48k
    memcpy(padded + 128, data, size);
23
24
1.48k
    return (uint8_t *) padded + 128;
25
1.48k
}
TopicTree.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
3.09k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
3.09k
    static int paddedLength = 512 * 1024;
13
3.09k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
3.09k
    if (paddedLength < size) {
17
31
        delete [] padded;
18
31
        paddedLength = size;
19
31
        padded = new char [128 + paddedLength + 128];
20
31
    }
21
22
3.09k
    memcpy(padded + 128, data, size);
23
24
3.09k
    return (uint8_t *) padded + 128;
25
3.09k
}
PerMessageDeflate.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
300
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
300
    static int paddedLength = 512 * 1024;
13
300
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
300
    if (paddedLength < size) {
17
21
        delete [] padded;
18
21
        paddedLength = size;
19
21
        padded = new char [128 + paddedLength + 128];
20
21
    }
21
22
300
    memcpy(padded + 128, data, size);
23
24
300
    return (uint8_t *) padded + 128;
25
300
}
Http.cpp:makePadded(unsigned char const*, unsigned long)
Line
Count
Source
11
6.37k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
6.37k
    static int paddedLength = 512 * 1024;
13
6.37k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
6.37k
    if (paddedLength < size) {
17
70
        delete [] padded;
18
70
        paddedLength = size;
19
70
        padded = new char [128 + paddedLength + 128];
20
70
    }
21
22
6.37k
    memcpy(padded + 128, data, size);
23
24
6.37k
    return (uint8_t *) padded + 128;
25
6.37k
}
26
27
/* Splits the fuzz data in one or many chunks */
28
11.2k
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
4.98M
    for (int i = 0; i < size; ) {
31
4.97M
        unsigned int chunkSize = data[i++];
32
4.97M
        if (!chunkSize) {
33
3.38k
            chunkSize = size - i;
34
4.97M
        } else {
35
4.97M
            chunkSize = std::min<int>(chunkSize, size - i);
36
4.97M
        }
37
38
4.97M
        cb(data + i, chunkSize);
39
4.97M
        i += chunkSize;
40
4.97M
    }
41
11.2k
}
WebSocket.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
1.48k
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
144k
    for (int i = 0; i < size; ) {
31
143k
        unsigned int chunkSize = data[i++];
32
143k
        if (!chunkSize) {
33
460
            chunkSize = size - i;
34
142k
        } else {
35
142k
            chunkSize = std::min<int>(chunkSize, size - i);
36
142k
        }
37
38
143k
        cb(data + i, chunkSize);
39
143k
        i += chunkSize;
40
143k
    }
41
1.48k
}
TopicTree.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
3.09k
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
4.60M
    for (int i = 0; i < size; ) {
31
4.60M
        unsigned int chunkSize = data[i++];
32
4.60M
        if (!chunkSize) {
33
259
            chunkSize = size - i;
34
4.60M
        } else {
35
4.60M
            chunkSize = std::min<int>(chunkSize, size - i);
36
4.60M
        }
37
38
4.60M
        cb(data + i, chunkSize);
39
4.60M
        i += chunkSize;
40
4.60M
    }
41
3.09k
}
PerMessageDeflate.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
300
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
67.0k
    for (int i = 0; i < size; ) {
31
66.7k
        unsigned int chunkSize = data[i++];
32
66.7k
        if (!chunkSize) {
33
182
            chunkSize = size - i;
34
66.5k
        } else {
35
66.5k
            chunkSize = std::min<int>(chunkSize, size - i);
36
66.5k
        }
37
38
66.7k
        cb(data + i, chunkSize);
39
66.7k
        i += chunkSize;
40
66.7k
    }
41
300
}
Http.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
6.37k
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
159k
        unsigned int chunkSize = data[i++];
32
159k
        if (!chunkSize) {
33
2.48k
            chunkSize = size - i;
34
156k
        } else {
35
156k
            chunkSize = std::min<int>(chunkSize, size - i);
36
156k
        }
37
38
159k
        cb(data + i, chunkSize);
39
159k
        i += chunkSize;
40
159k
    }
41
6.37k
}
42
43
/* Reads all bytes to trigger invalid reads */
44
139k
static inline void readBytes(std::string_view s) {
45
139k
    volatile int sum = 0;
46
3.23M
    for (int i = 0; i < s.size(); i++) {
47
3.09M
        sum += s[i];
48
3.09M
    }
49
139k
}
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
139k
static inline void readBytes(std::string_view s) {
45
139k
    volatile int sum = 0;
46
3.23M
    for (int i = 0; i < s.size(); i++) {
47
3.09M
        sum += s[i];
48
3.09M
    }
49
139k
}
50
51
#endif