67 lines
1.6 KiB
Markdown
67 lines
1.6 KiB
Markdown
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# Introduction
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`QRY` is a command introduced with [MSNP6](../versions/msnp6.md).
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It is a Notification Server command, WITH a request payload but without a response payload.
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Responds to a challenge request ([CHL](chl.md) command).
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# Client/Request
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```
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QRY TrID public-key length
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payload
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```
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Where `public-key` is your client's Public Key.
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Where `length` is the size (in bytes) of the `payload`.
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Where `payload` is the challenge response.
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## Challenge responses
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Calculating the challenge response depends on the version of the protocol you are using.
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### Basic responses
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*Only in [MSNP6](../versions/msnp10.md) to [MSNP10](../versions/msnp10.md).*
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Simply MD5 hash the challenge and your client's Private Key concatenated together as a string.
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The output should be 32 bytes and lowercase hexadecimal.
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### Advanced responses
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*Since [MSNP11](../versions/msnp11.md).*
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Since this is more advanced of an algorithm,
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it will be avaliable as annotated source code in the Miscellaneous Files sectiom.
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TODO: Write said annotated source code.
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The output should be 32 bytes and lowercase hexadecimal.
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# Server/Response
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`QRY TrID`
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# Examples
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## Successful response
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```
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S: CHL 12345678901234567890
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C: QRY 1 msmsgs@msnmsgr.com 32
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8ba1bb9d6dbf624fee31a2053af5fdd0
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S: QRY 1
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```
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## Failed challenge
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*NOTE: This happens as-is in [MSNP11](../versions/msnp11.md),
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since it isn't using the new method.*
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```
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S: CHL 12345678901234567890
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C: QRY 2 msmsgs@msnmsgr.com 32
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8ba1bb9d6dbf624fee31a2053af5fdd0
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S: 540 2
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```
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Server disconnects client.
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# Known changes
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* [MSNP11](../versions/msnp11.md): Changed challenge response generation algorithm drastically.
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