Coverage Report

Created: 2026-06-15 06:50

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
11.5k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
11.5k
    static int paddedLength = 512 * 1024;
13
11.5k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
11.5k
    if (paddedLength < size) {
17
144
        delete [] padded;
18
144
        paddedLength = size;
19
144
        padded = new char [128 + paddedLength + 128];
20
144
    }
21
22
11.5k
    memcpy(padded + 128, data, size);
23
24
11.5k
    return (uint8_t *) padded + 128;
25
11.5k
}
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
26
        delete [] padded;
18
26
        paddedLength = size;
19
26
        padded = new char [128 + paddedLength + 128];
20
26
    }
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
3.27k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
3.27k
    static int paddedLength = 512 * 1024;
13
3.27k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
3.27k
    if (paddedLength < size) {
17
28
        delete [] padded;
18
28
        paddedLength = size;
19
28
        padded = new char [128 + paddedLength + 128];
20
28
    }
21
22
3.27k
    memcpy(padded + 128, data, size);
23
24
3.27k
    return (uint8_t *) padded + 128;
25
3.27k
}
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
6.48k
static inline const uint8_t *makePadded(const uint8_t *data, size_t size) {
12
6.48k
    static int paddedLength = 512 * 1024;
13
6.48k
    static char *padded = new char[128 + paddedLength + 128];
14
15
    /* Increase landing area if required */
16
6.48k
    if (paddedLength < size) {
17
68
        delete [] padded;
18
68
        paddedLength = size;
19
68
        padded = new char [128 + paddedLength + 128];
20
68
    }
21
22
6.48k
    memcpy(padded + 128, data, size);
23
24
6.48k
    return (uint8_t *) padded + 128;
25
6.48k
}
26
27
/* Splits the fuzz data in one or many chunks */
28
11.5k
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
5.10M
    for (int i = 0; i < size; ) {
31
5.09M
        unsigned int chunkSize = data[i++];
32
5.09M
        if (!chunkSize) {
33
3.38k
            chunkSize = size - i;
34
5.09M
        } else {
35
5.09M
            chunkSize = std::min<int>(chunkSize, size - i);
36
5.09M
        }
37
38
5.09M
        cb(data + i, chunkSize);
39
5.09M
        i += chunkSize;
40
5.09M
    }
41
11.5k
}
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
221k
    for (int i = 0; i < size; ) {
31
219k
        unsigned int chunkSize = data[i++];
32
219k
        if (!chunkSize) {
33
456
            chunkSize = size - i;
34
219k
        } else {
35
219k
            chunkSize = std::min<int>(chunkSize, size - i);
36
219k
        }
37
38
219k
        cb(data + i, chunkSize);
39
219k
        i += chunkSize;
40
219k
    }
41
1.48k
}
TopicTree.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
3.27k
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
4.62M
    for (int i = 0; i < size; ) {
31
4.62M
        unsigned int chunkSize = data[i++];
32
4.62M
        if (!chunkSize) {
33
263
            chunkSize = size - i;
34
4.62M
        } else {
35
4.62M
            chunkSize = std::min<int>(chunkSize, size - i);
36
4.62M
        }
37
38
4.62M
        cb(data + i, chunkSize);
39
4.62M
        i += chunkSize;
40
4.62M
    }
41
3.27k
}
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
45.0k
    for (int i = 0; i < size; ) {
31
44.7k
        unsigned int chunkSize = data[i++];
32
44.7k
        if (!chunkSize) {
33
176
            chunkSize = size - i;
34
44.5k
        } else {
35
44.5k
            chunkSize = std::min<int>(chunkSize, size - i);
36
44.5k
        }
37
38
44.7k
        cb(data + i, chunkSize);
39
44.7k
        i += chunkSize;
40
44.7k
    }
41
308
}
Http.cpp:makeChunked(unsigned char const*, unsigned long, std::__1::function<void (unsigned char const*, unsigned long)>)
Line
Count
Source
28
6.48k
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
218k
    for (int i = 0; i < size; ) {
31
212k
        unsigned int chunkSize = data[i++];
32
212k
        if (!chunkSize) {
33
2.49k
            chunkSize = size - i;
34
209k
        } else {
35
209k
            chunkSize = std::min<int>(chunkSize, size - i);
36
209k
        }
37
38
212k
        cb(data + i, chunkSize);
39
212k
        i += chunkSize;
40
212k
    }
41
6.48k
}
42
43
/* Reads all bytes to trigger invalid reads */
44
158k
static inline void readBytes(std::string_view s) {
45
158k
    volatile int sum = 0;
46
4.09M
    for (int i = 0; i < s.size(); i++) {
47
3.94M
        sum += s[i];
48
3.94M
    }
49
158k
}
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
158k
static inline void readBytes(std::string_view s) {
45
158k
    volatile int sum = 0;
46
4.09M
    for (int i = 0; i < s.size(); i++) {
47
3.94M
        sum += s[i];
48
3.94M
    }
49
158k
}
50
51
#endif