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Correct content byte info

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Bottersnike 2022-01-13 19:41:04 +00:00
parent 8a3d17dd26
commit f050be42f2
1 changed files with 17 additions and 11 deletions
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templates/pages/packet.html
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@ -108,22 +108,22 @@
</thead>
<tr>
<td><code>0x42</code></td>
<td>Compressed data</td>
<td>Packed names, contains data</td>
</tr>
<tr>
<td><code>0x43</code></td>
<td>Compressed, no data</td>
<td>Packed names, schema only</td>
</tr>
<tr>
<td><code>0x45</code></td>
<td>Decompressed data</td>
<td>Full names, contains data</td>
</tr>
<tr>
<td><code>0x46</code></td>
<td>Decompressed, no data</td>
<td>Full names, schema only</td>
</tr>
</table>
<p>Decompressed packets contain an XML string. Compressed packets are what we're interested in here.</p>
<p><small><i>I haven't seen <code>0x44</code>, so no idea what that one does, before you ask.</i></small></p>
<p>The encoding flag indicates the encoding for all string types in the packet (more on those later). Possible
values are:</p>
<table>
@ -234,9 +234,15 @@
</tr>
</table>
<p>Structure names are encoded as densely packed 6 bit values, length prefixed (<code>nlen</code>). The acceptable
alphabet is <code>0123456789:ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz</code>, and the packed values
are indecies within this alphabet.</p>
<p>The encoding of structure names varies depending on the packet content byte. If the content flag indicates we have
full names, then <code>nlen</code> will be masked with <code>0x40</code>. The string length is the unmasked value,
+1 (0-length names make no sense anyway). We can then read off the correct number of bytes, and decode accordingly.
</p>
<p>If we are instead parsing packed names, then the names are encoded as densely packed 6 bit values. The length prefix
(<code>nlen</code>) determines the length of the final unpacked string. The acceptable alphabet is
<code>0123456789:ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz</code>, and the packed values are indecies
within this alphabet.
</p>
<p>The children can be a combination of either attribute names, or child tags. Attribute names are represented by
the byte <code>0x2E</code> followed by a length prefixed name as defined above. Child tags follow the above
@ -366,7 +372,7 @@
<td>8</td>
<td>uint8[4]</td>
<td>int</td>
<td>4s16</td>
<td>4u16</td>
<td></td>
</tr>
<tr>
@ -539,7 +545,7 @@
<td>4</td>
<td>uint16[2]</td>
<td>int</td>
<td>2s16</td>
<td>2u16</td>
<td></td>
<td></td>
<td>0x33</td>
@ -689,7 +695,7 @@
<td>6</td>
<td>uint16[3]</td>
<td>int</td>
<td>3s16</td>
<td>3u16</td>
<td></td>
<td></td>
<td>0x3c</td>