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Line 1: − + + + + + + + + + + + − + − + − + + + + + + + + + − + + + − Data compression method is still unknown. If you calculate entropy of the data, you will notice that it is definitely not encrypted. Probably it uses a modified version of propieritary Nintendo compression method described here: http://everything2.com/index.pl?node_id=1469892&lastnode_id=0+ + + + + − Here's a part of news data file:+ − 000003D8 24 0F F0 00 7F 23 D7 00 87 24 2F 14 00 52 00 00 65 00 67 00 69 00 6F 00 $....#...$/..R..e.g.i.o.+ − 000003F0 00 6E 00 61 00 6C 00 20 00 45 4E 00 11 77 00 73 05 4A 49 00 13 56 74 00 .n.a.l. .EN..w.s.JI..Vt.+ + + + + + + + + + + + + + + + + + + + + − You can almost see string "Regional News" there.+
no edit summary
News / Weather channel downloads data packages from Nintendo servers via plain http connection.
{{Infobox channel
| title = News Channel
| image = [[File:Newschannel.png|200px]]
| desc = News informations
| type = General channel
| version = 0.7 (7)
| peripherals = {{Wiimote1}} {{Internet}}
| wc24 = 1
}}
The '''News Channel''' download data packages from Nintendo servers via plain HTTP connection. Since the official servers for this were discontinued on June 28, 2013, [[RiiConnect24]] is in the works.
Some examples:
Some examples:
http://weather.wapp.wii.com/1/076/short.bin
http://news.wapp.wii.com/1/076/news.bin.08<br />
http://weather.wapp.wii.com/1/076/forecast.bin
http://news.wapp.wii.com/1/076/news.bin.08
Nowadays, it seems the news file has moved:
http://news.wapp.wii.com/v2/1/076/news.bin.00
...
http://news.wapp.wii.com/v2/1/076/news.bin.23
http://news.wapp.wii.com/ displays a Red Hat Enterprise Linux Test Page.
File structure:
File structure:
<pre>
$0000 - $003F: padding (00)
$0000 - $003F: padding (00)
$0040 - $013F: rsa encrypted sha-1 signature of rest of the file
$0040 - $013F: rsa encrypted sha-1 signature of rest of the file
$0140 - $....: compressed data
$0140 - $0143: header
$0144 - .....: compressed data
</pre>
The compression is very simple:
# Read one byte
# For each bit of the byte, msb-to-lsb,
#* if 0, copy one byte to the output
#* if 1, read 16 bits msb first in v, copy n bytes at offset m from the end of the output, n=3+(v>>12), m=v & fff
Quick and very dirty C code:
<source lang="c">
i = 0x144;
j = 0;
while(i < size) {
int k;
int v = data[i++];
for(k=0; k<8; k++)
if(!(v & (1 << (7-k)))) {
result_data[j++] = data[i++];
} else {
int vv = (data[i] << 8) | data[i+1];
int nb = 3+(vv >> 12);
int off = (vv & 0xfff);
int l;
i+=2;
for(l=0; l<nb; l++) {
result_data[j] = result_data[j-off-1];
j++;
}
}
}
</source>
[[Category:Software]]