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55 lines
991 B
55 lines
991 B
#!/bin/sh
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#
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# Copyright (C) 2018 Weijie Gao <hackpascal@gmail.com>
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#
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# Helper function to extract mac addresses from mtd part for Phicomm K2T
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#
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. /lib/functions.sh
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. /lib/functions/system.sh
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. /usr/share/libubox/jshn.sh
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k2t_config_load() {
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local mtd_blk=$(find_mtd_part config)
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if [ -z "$mtd_blk" ]; then
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echo "k2t_config_load: no mtd part named config" >&2
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exit 1
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fi
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local json_size=$(dd if=$mtd_blk bs=1 count=8 2>/dev/null)
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json_size="0x$json_size"
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json_size=$((json_size))
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if [ "$?" -ne 0 ]; then
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echo "k2t_config_load: invalid json data size" >&2
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exit 2
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fi
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if [ "$json_size" -eq 0 ]; then
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echo "k2t_config_load: empty json data" >&2
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exit 3
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fi
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local json_data=$(dd if=$mtd_blk bs=1 skip=8 count=$json_size 2>/dev/null)
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json_load "$json_data"
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}
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k2t_get_mac() {
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local old_ns
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json_set_namespace "k2t" old_ns
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if k2t_config_load; then
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json_select "this_dev_info"
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json_get_var val "$1"
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json_select ..
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fi
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json_set_namespace old_ns
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echo $val
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}
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