Revision of parseFritzBpjmFile.go

Sem alterações

1 file changed, 57 insertions

parseFritzBpjmFile.go(arquivo criado)

		@@ -0,0 +1,57 @@
1	+	// parse a FritzBox Bpjm File
2	+
3	+	package main
4	+
5	+	import (
6	+	"os"
7	+	"fmt"
8	+	"bytes"
9	+	"io"
10	+	"io/ioutil"
11	+	)
12	+
13	+	// error checking function that panics on error
14	+	func check(err error) {
15	+	if err != nil {
16	+	panic(err)
17	+	}
18	+	}
19	+
20	+	// cut away null byte padding
21	+	func cutNullBytes (data []byte) (nd []byte) {
22	+	nd = bytes.Trim(data, string(0x00))
23	+	return nd
24	+	}
25	+
26	+	func main() {
27	+	// get filename to parse
28	+	filename := os.Args[1]
29	+	// read in file
30	+	dat, err := ioutil.ReadFile(filename)
31	+	check(err)
32	+	// make a bytes buffer of file content
33	+	buf := bytes.NewBuffer(dat)
34	+	// print legth of buffer
35	+	fmt.Printf("Länge der eingelesenen Daten: %d bytes\n", buf.Len())
36	+	// extract magick number
37	+	magick := buf.Next(5)
38	+	fmt.Printf("Magick: %x\n", magick)
39	+	// extract embedded filename
40	+	embed_filename := buf.Next(59)
41	+	fmt.Printf("Filename: %s\n", string(cutNullBytes(embed_filename)))
42	+	// parse the rest of the file (actual bpjm list data)
43	+	n := 0
44	+	for {
45	+	entry := make([]byte, 33)
46	+	_, err := buf.Read(entry)
47	+	if err != nil {
48	+	if err == io.EOF {
49	+	break
50	+	}
51	+	panic(err)
52	+	}
53	+	//fmt.Printf("%x_%04d: %x %x %x\n", magick, n, entry[0:15], entry[16:31], entry[32])
54	+	fmt.Printf("%s_%04d: %x %x %x\n", cutNullBytes(embed_filename), n, entry[0:15], entry[16:31], entry[32])
55	+	n++
56	+	}
57	+	}

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