From e3cafeaf9292f67459ff1d186f68283bfaedf2ae Mon Sep 17 00:00:00 2001 From: Wim Date: Mon, 31 Jan 2022 00:27:37 +0100 Subject: Add dependencies/vendor (whatsapp) --- .../Rhymen/go-whatsapp/binary/decoder.go | 388 --------------------- 1 file changed, 388 deletions(-) delete mode 100644 vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go (limited to 'vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go') diff --git a/vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go b/vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go deleted file mode 100644 index 95da606c..00000000 --- a/vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go +++ /dev/null @@ -1,388 +0,0 @@ -package binary - -import ( - "fmt" - "github.com/Rhymen/go-whatsapp/binary/token" - "io" - "strconv" -) - -type binaryDecoder struct { - data []byte - index int -} - -func NewDecoder(data []byte) *binaryDecoder { - return &binaryDecoder{data, 0} -} - -func (r *binaryDecoder) checkEOS(length int) error { - if r.index+length > len(r.data) { - return io.EOF - } - - return nil -} - -func (r *binaryDecoder) readByte() (byte, error) { - if err := r.checkEOS(1); err != nil { - return 0, err - } - - b := r.data[r.index] - r.index++ - - return b, nil -} - -func (r *binaryDecoder) readIntN(n int, littleEndian bool) (int, error) { - if err := r.checkEOS(n); err != nil { - return 0, err - } - - var ret int - - for i := 0; i < n; i++ { - var curShift int - if littleEndian { - curShift = i - } else { - curShift = n - i - 1 - } - ret |= int(r.data[r.index+i]) << uint(curShift*8) - } - - r.index += n - return ret, nil -} - -func (r *binaryDecoder) readInt8(littleEndian bool) (int, error) { - return r.readIntN(1, littleEndian) -} - -func (r *binaryDecoder) readInt16(littleEndian bool) (int, error) { - return r.readIntN(2, littleEndian) -} - -func (r *binaryDecoder) readInt20() (int, error) { - if err := r.checkEOS(3); err != nil { - return 0, err - } - - ret := ((int(r.data[r.index]) & 15) << 16) + (int(r.data[r.index+1]) << 8) + int(r.data[r.index+2]) - r.index += 3 - return ret, nil -} - -func (r *binaryDecoder) readInt32(littleEndian bool) (int, error) { - return r.readIntN(4, littleEndian) -} - -func (r *binaryDecoder) readInt64(littleEndian bool) (int, error) { - return r.readIntN(8, littleEndian) -} - -func (r *binaryDecoder) readPacked8(tag int) (string, error) { - startByte, err := r.readByte() - if err != nil { - return "", err - } - - ret := "" - - for i := 0; i < int(startByte&127); i++ { - currByte, err := r.readByte() - if err != nil { - return "", err - } - - lower, err := unpackByte(tag, currByte&0xF0>>4) - if err != nil { - return "", err - } - - upper, err := unpackByte(tag, currByte&0x0F) - if err != nil { - return "", err - } - - ret += lower + upper - } - - if startByte>>7 != 0 { - ret = ret[:len(ret)-1] - } - return ret, nil -} - -func unpackByte(tag int, value byte) (string, error) { - switch tag { - case token.NIBBLE_8: - return unpackNibble(value) - case token.HEX_8: - return unpackHex(value) - default: - return "", fmt.Errorf("unpackByte with unknown tag %d", tag) - } -} - -func unpackNibble(value byte) (string, error) { - switch { - case value < 0 || value > 15: - return "", fmt.Errorf("unpackNibble with value %d", value) - case value == 10: - return "-", nil - case value == 11: - return ".", nil - case value == 15: - return "\x00", nil - default: - return strconv.Itoa(int(value)), nil - } -} - -func unpackHex(value byte) (string, error) { - switch { - case value < 0 || value > 15: - return "", fmt.Errorf("unpackHex with value %d", value) - case value < 10: - return strconv.Itoa(int(value)), nil - default: - return string('A' + value - 10), nil - } -} - -func (r *binaryDecoder) readListSize(tag int) (int, error) { - switch tag { - case token.LIST_EMPTY: - return 0, nil - case token.LIST_8: - return r.readInt8(false) - case token.LIST_16: - return r.readInt16(false) - default: - return 0, fmt.Errorf("readListSize with unknown tag %d at position %d", tag, r.index) - } -} - -func (r *binaryDecoder) readString(tag int) (string, error) { - switch { - case tag >= 3 && tag <= len(token.SingleByteTokens): - tok, err := token.GetSingleToken(tag) - if err != nil { - return "", err - } - - if tok == "s.whatsapp.net" { - tok = "c.us" - } - - return tok, nil - case tag == token.DICTIONARY_0 || tag == token.DICTIONARY_1 || tag == token.DICTIONARY_2 || tag == token.DICTIONARY_3: - i, err := r.readInt8(false) - if err != nil { - return "", err - } - - return token.GetDoubleToken(tag-token.DICTIONARY_0, i) - case tag == token.LIST_EMPTY: - return "", nil - case tag == token.BINARY_8: - length, err := r.readInt8(false) - if err != nil { - return "", err - } - - return r.readStringFromChars(length) - case tag == token.BINARY_20: - length, err := r.readInt20() - if err != nil { - return "", err - } - - return r.readStringFromChars(length) - case tag == token.BINARY_32: - length, err := r.readInt32(false) - if err != nil { - return "", err - } - - return r.readStringFromChars(length) - case tag == token.JID_PAIR: - b, err := r.readByte() - if err != nil { - return "", err - } - i, err := r.readString(int(b)) - if err != nil { - return "", err - } - - b, err = r.readByte() - if err != nil { - return "", err - } - j, err := r.readString(int(b)) - if err != nil { - return "", err - } - - if i == "" || j == "" { - return "", fmt.Errorf("invalid jid pair: %s - %s", i, j) - } - - return i + "@" + j, nil - case tag == token.NIBBLE_8 || tag == token.HEX_8: - return r.readPacked8(tag) - default: - return "", fmt.Errorf("invalid string with tag %d", tag) - } -} - -func (r *binaryDecoder) readStringFromChars(length int) (string, error) { - if err := r.checkEOS(length); err != nil { - return "", err - } - - ret := r.data[r.index : r.index+length] - r.index += length - - return string(ret), nil -} - -func (r *binaryDecoder) readAttributes(n int) (map[string]string, error) { - if n == 0 { - return nil, nil - } - - ret := make(map[string]string) - for i := 0; i < n; i++ { - idx, err := r.readInt8(false) - if err != nil { - return nil, err - } - - index, err := r.readString(idx) - if err != nil { - return nil, err - } - - idx, err = r.readInt8(false) - if err != nil { - return nil, err - } - - ret[index], err = r.readString(idx) - if err != nil { - return nil, err - } - } - - return ret, nil -} - -func (r *binaryDecoder) readList(tag int) ([]Node, error) { - size, err := r.readListSize(tag) - if err != nil { - return nil, err - } - - ret := make([]Node, size) - for i := 0; i < size; i++ { - n, err := r.ReadNode() - - if err != nil { - return nil, err - } - - ret[i] = *n - } - - return ret, nil -} - -func (r *binaryDecoder) ReadNode() (*Node, error) { - ret := &Node{} - - size, err := r.readInt8(false) - if err != nil { - return nil, err - } - listSize, err := r.readListSize(size) - if err != nil { - return nil, err - } - - descrTag, err := r.readInt8(false) - if descrTag == token.STREAM_END { - return nil, fmt.Errorf("unexpected stream end") - } - ret.Description, err = r.readString(descrTag) - if err != nil { - return nil, err - } - if listSize == 0 || ret.Description == "" { - return nil, fmt.Errorf("invalid Node") - } - - ret.Attributes, err = r.readAttributes((listSize - 1) >> 1) - if err != nil { - return nil, err - } - - if listSize%2 == 1 { - return ret, nil - } - - tag, err := r.readInt8(false) - if err != nil { - return nil, err - } - - switch tag { - case token.LIST_EMPTY, token.LIST_8, token.LIST_16: - ret.Content, err = r.readList(tag) - case token.BINARY_8: - size, err = r.readInt8(false) - if err != nil { - return nil, err - } - - ret.Content, err = r.readBytes(size) - case token.BINARY_20: - size, err = r.readInt20() - if err != nil { - return nil, err - } - - ret.Content, err = r.readBytes(size) - case token.BINARY_32: - size, err = r.readInt32(false) - if err != nil { - return nil, err - } - - ret.Content, err = r.readBytes(size) - default: - ret.Content, err = r.readString(tag) - } - - if err != nil { - return nil, err - } - return ret, nil -} - -func (r *binaryDecoder) readBytes(n int) ([]byte, error) { - ret := make([]byte, n) - var err error - - for i := range ret { - ret[i], err = r.readByte() - if err != nil { - return nil, err - } - } - - return ret, nil -} -- cgit v1.2.3