How to use hexToByte method of prog Package

Best Syzkaller code snippet using prog.hexToByte

bpf.go

Source:bpf.go

...1083		proto,1084		portBytes[0], portBytes[1])1085	return strings.Split(hexStr, " "), nil1086}1087func hexToByte(hexString string) (byte, error) {1088	hex := strings.TrimPrefix(hexString, "0x")1089	proto64, err := strconv.ParseUint(hex, 16, 8)1090	if err != nil {1091		return 0, err1092	}1093	return byte(proto64), nil1094}1095// hexToFailsafe takes the bpftool hex representation of a protocol and port1096// number and returns the protocol and port number.1097func hexToFailsafe(hexString []string) (proto uint8, port uint16, err error) {1098	proto, err = hexToByte(hexString[0])1099	if err != nil {1100		return1101	}1102	padding, err := hexToByte(hexString[1])1103	if err != nil {1104		return1105	}1106	if padding != 0 {1107		err = fmt.Errorf("invalid proto in hex string: %q\n", hexString[1])1108		return1109	}1110	portMSB, err := hexToByte(hexString[2])1111	if err != nil {1112		err = fmt.Errorf("invalid port MSB in hex string: %q\n", hexString[2])1113		return1114	}1115	portLSB, err := hexToByte(hexString[3])1116	if err != nil {1117		err = fmt.Errorf("invalid port LSB in hex string: %q\n", hexString[3])1118		return1119	}1120	port = binary.LittleEndian.Uint16([]byte{portLSB, portMSB})1121	return1122}1123// CidrToHex takes a CIDR in string form (e.g. "192.168.0.0/16") and outputs a1124// string slice of hex-encoded bytes ready to be passed to bpftool.1125//1126// For example, for "192.168.0.0/16":1127//1128// [1129//  10, 00, 00, 00,   mask in little endian order1130//  C0, A8, 00, 00    IP address1131// ]1132func CidrToHex(cidr string) ([]string, error) {1133	cidrParts := strings.Split(cidr, "/")1134	if len(cidrParts) != 2 {1135		return nil, fmt.Errorf("failed to split CIDR %q", cidr)1136	}1137	rawIP := cidrParts[0]1138	mask, err := strconv.Atoi(cidrParts[1])1139	if err != nil {1140		return nil, fmt.Errorf("failed to convert mask %d to int", mask)1141	}1142	ip := net.ParseIP(rawIP)1143	if ip == nil {1144		return nil, fmt.Errorf("invalid IP %q", rawIP)1145	}1146	ipv4 := ip.To4()1147	if ipv4 == nil {1148		return nil, fmt.Errorf("IP %q is not IPv4", ip)1149	}1150	maskBytes := make([]byte, 4)1151	binary.LittleEndian.PutUint32(maskBytes, uint32(mask))1152	hexStr := fmt.Sprintf("%02x %02x %02x %02x %02x %02x %02x %02x",1153		maskBytes[0], maskBytes[1], maskBytes[2], maskBytes[3],1154		ipv4[0], ipv4[1], ipv4[2], ipv4[3])1155	return strings.Split(hexStr, " "), nil1156}1157// hexToIPNet takes the bpftool hex representation of a CIDR (see above) and1158// returns a net.IPNet.1159func hexToIPNet(hexStrings []string, family IPFamily) (*net.IPNet, error) {1160	hex, err := hexStringsToBytes(hexStrings)1161	if err != nil {1162		return nil, err1163	}1164	maskBytes := hex[0:4]1165	ipBytes := hex[4:]1166	mask := int(binary.LittleEndian.Uint32(maskBytes))1167	return &net.IPNet{1168		IP:   ipBytes,1169		Mask: net.CIDRMask(mask, family.Size()*8),1170	}, nil1171}1172// hexToCIDRMapValue takes a string slice containing the bpftool hex1173// representation of a 1-byte value and returns it as an uint321174func hexToCIDRMapValue(hexStrings []string) (uint32, error) {1175	hex, err := hexStringsToBytes(hexStrings)1176	if err != nil {1177		return 0, err1178	}1179	if len(hex) != 4 {1180		return 0, fmt.Errorf("wrong size of hex in %q", hexStrings)1181	}1182	return nativeEndian.Uint32(hex), nil1183}1184// cidrMapValueToHex takes a ref count as unsigned 32 bit number and1185// turns it into an array of hex strings, which bpftool can understand.1186func cidrMapValueToHex(refCount uint32) []string {1187	refCountBytes := make([]byte, 4)1188	nativeEndian.PutUint32(refCountBytes, refCount)1189	hexStr := fmt.Sprintf("%02x %02x %02x %02x",1190		refCountBytes[0], refCountBytes[1], refCountBytes[2], refCountBytes[3])1191	return strings.Split(hexStr, " ")1192}1193// hexStringsToBytes takes a string slice containing bpf data represented as1194// bpftool hex and returns a slice of bytes containing that data.1195func hexStringsToBytes(hexStrings []string) ([]byte, error) {1196	var hex []byte1197	for _, b := range hexStrings {1198		h, err := hexToByte(b)1199		if err != nil {1200			return nil, err1201		}1202		hex = append(hex, byte(h))1203	}1204	return hex, nil1205}1206func MemberToIPMask(member string) (*net.IP, int, error) {1207	var (1208		mask  int1209		rawIP string1210	)1211	memberParts := strings.Split(member, "/")1212	switch len(memberParts) {...

hexToByte

Using AI Code Generation

1import (2func main() {3    fmt.Println(prog.HexToByte("0x6a"))4    fmt.Println(prog.HexToByte("0x1f"))5    fmt.Println(prog.HexToByte("0x4d"))6    fmt.Println(prog.HexToByte("0x42"))7    fmt.Println(prog.HexToByte("0x1f"))8    fmt.Println(prog.HexToByte("0x4d"))9    fmt.Println(prog.HexToByte("0x42"))10    fmt.Println(prog.HexToByte("0x1f"))11    fmt.Println(prog.HexToByte("0x4d"))12    fmt.Println(prog.HexToByte("0x42"))13}

hexToByte

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println(prog.hexToByte("0x1"))4}5func hexToByte(s string) []byte {6    return []byte(s)7}8import "testing"9func TestHexToByte(t *testing.T) {10    if hexToByte("0x1")[0] != 0x1 {11        t.Error("Expected 0x1")12    }13}

hexToByte

Using AI Code Generation

1import "fmt"2import "prog"3func main() {4   fmt.Println(prog.HexToByte("0x123"))5}6func HexToByte(s string) []byte {7}8import "fmt"9import "prog"10func main() {11   fmt.Println(prog.HexToByte("0x123"))12}13func HexToByte(s string) []byte {14}15import "fmt"16import "prog"17func main() {18   fmt.Println(prog.HexToByte("0x123"))19}20func HexToByte(s string) []byte {21}22import "fmt"23import "prog"24func main() {25   fmt.Println(prog.HexToByte("0x123"))26}

hexToByte

Using AI Code Generation

1import (2func main() {3    fmt.Println(prog.HexToByte("00"))4}5import (6func TestHexToByte(t *testing.T) {7    if HexToByte("00") != 0 {8        t.Error("Expected 0, got ", HexToByte("00"))9    }10    if HexToByte("0a") != 10 {11        t.Error("Expected 10, got ", HexToByte("0a"))12    }13    if HexToByte("ff") != 255 {14        t.Error("Expected 255, got ", HexToByte("ff"))15    }16}17--- FAIL: TestHexToByte (0.00s)18func TestHexToByte(t *testing.T) {19    tests := []struct {20    }{21        {"00", 0},22        {"0a", 10},23        {"ff", 255},

hexToByte

Using AI Code Generation

1import (2func main() {3	b := prog.HexToByte("0x00")4	fmt.Println(b)5}6func HexToByte(s string) byte {7}8import (9func main() {10	b := prog.hexToByte("0x00")11	fmt.Println(b)12}13func HexToByte(s string) byte {14}15import (16func main() {17	b := prog.HexToByte("0x00")18	fmt.Println(b)19}

hexToByte

Using AI Code Generation

1import (2func main() {3	fmt.Println(prog.HexToByte("0x10"))4}5import (6func main() {7	fmt.Println(prog.HexToByte("0x10"))8}9import (10func main() {11	fmt.Println(prog.HexToByte("0x10"))12}13import (14func main() {15	fmt.Println(prog.HexToByte("0x10"))16}17import (18func main() {19	fmt.Println(prog.HexToByte("0x10"))20}21import (22func main() {23	fmt.Println(prog.HexToByte("0x10"))24}25import (26func main() {27	fmt.Println(prog.HexToByte("0x10"))28}29import (30func main() {31	fmt.Println(prog.HexToByte("0x10"))32}

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