63 lines
2.5 KiB
Markdown
63 lines
2.5 KiB
Markdown
# aria-control-file-parser
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Parse aria2c control file from cmd line.
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When use aria2c to download magnet, use ctrl+c to kill aria2c process, or system reboot or shutdown, then if you need to continue the download process, you have to find what the original magnet link.
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See this issue(https://github.com/aria2/aria2/issues/792).
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From the aria technical notes, the .aria2 (Control File) contain the hash info of
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the magnet link, so parse the file we could get the original magnet link.
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Also @alphatr write a tool transform .aria2 file to a magnet link use javascript.
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```
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# ================================================================
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# 0 1 2 3
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# 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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# +---+-------+-------+-------------------------------------------+
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# |VER| EXT |INFO |INFO HASH ... |
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# |(2)| (4) |HASH | (INFO HASH LENGTH) |
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# | | |LENGTH | |
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# | | | (4) | |
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# +---+---+---+-------+---+---------------+-------+---------------+
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# |PIECE |TOTAL LENGTH |UPLOAD LENGTH |BIT- |BITFIELD ... |
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# |LENGTH | (8) | (8) |FIELD | (BITFIELD |
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# | (4) | | |LENGTH | LENGTH) |
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# | | | | (4) | |
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# +-------+-------+-------+-------+-------+-------+---------------+
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# |NUM |INDEX |LENGTH |PIECE |PIECE BITFIELD ... |
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# |IN- | (4) | (4) |BIT- | (PIECE BITFIELD LENGTH) |
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# |FLIGHT | | |FIELD | |
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# |PIECE | | |LENGTH | |
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# | (4) | | | (4) | |
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# +-------+-------+-------+-------+-------------------------------+
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#
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# ^ ^
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# | |
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# +-------------------------------------------------------+
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# Repeated in (NUM IN-FLIGHT) PIECE times
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# more detail
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# https://aria2.github.io/manual/en/html/technical-notes.html
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# ================================================================
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```
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## how to run
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```bash
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python aria2_to_magnet.py dahufa.aria2
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```
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output
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```
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magnet:?xt=urn:btih:959E2ECEB954313D3869EFF7924CA7CD8DE739
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```
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with multiple files
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```bash
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python aria2_to_magnet.py *.aria2
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```
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