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| -rwxr-xr-x | bin/zchain-chk | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/bin/zchain-chk b/bin/zchain-chk new file mode 100755 index 0000000..bcb0132 --- /dev/null +++ b/bin/zchain-chk @@ -0,0 +1,145 @@ +#!/bin/bash +usage(){ + echo "zchain-chk - Check and fix zchain" + echo "---------------------------------" + echo "Usage:" + echo " --help, -h Print this help and exit" + echo " --chain <ipns-link>, -n <ipns-link> Crawl specified chain" + echo " --fix #TODO Fix your chain" + echo "" + echo "Note that combined flags don't work for now" + echo "Running with no flags crawls your chain" +} +# Start of tests +#entrance="QmW5WVXCJfhb4peHG6cbEdamC24vZzMX2Vz386vpENh38U" +#entrance="QmNjQq7GkuXGF8kFT1z2Mv3i4JhY7sBXVUmHDiR1zkQjoE" +#entrance="QmbFMke1KXqnYyBBWxB74N4c5SBnJMVAiMNRcGu6x1AwQH" +# End of tests +if [ ! -z "$1" ] && [ "$1" == "-h" ] || [ "$1" == "--help" ] +then + usage + exit +elif [ ! -z "$1" ] && [ "$1" == "-n" ] || [ "$1" == "--chain" ] +then + entrance="$(ipns-resolve $2)" +elif [ ! -z "$1" ] +then + entrance="$1" +else + # By default we enter from the latest block + # We can alter this by changing this value + entrance="$(cat $ZLATEST)" +fi +# We assign the IPFS CIDv0 of an empty file as this is used +# as our GENESIS block, hence the "seed" that the tree grows +# from. +seed="$(cat $ZGENESIS)" + +# We assume that we found the entrance inside a block, hence +# ZBLOCK is labeled as previous +zblock="$entrance" + +# Enter temp folder +TEMPASSIN="/tmp/aktmp_$(date -u +%s)" +mkdir $TEMPASSIN +cd $TEMPASSIN +counter=0 +# The loop +# We break the loop from inside the loop +while true +do + if [ $counter == 0 ] + then + echo 'Start checking' + fi + counter=$(expr $counter + 1) + # Check if $zblock exists as variable + if [ ! -v $zblock ] + then + # Check if it is not our seed cause if it is we skip this part + if [ "$zblock" != "$seed" ] + then + # Reset timestamp since it's introduced later + timestamp='' + # Announce to stdout which ZBLOCK is being read at the moment + logthis "Examining $zblock" + #echo'{"zblock":"'$zblock'",' + + # We create files named after each ZBLOCK IPFS CID for later + # reference. Files are empty. + touch $ZBLOCKDIR/$zblock + logthis "Created reference" + + # We concatenate the zblock's contents, pipe them through filter + # json2bash and output them to tmp-file + ipfs cat $zblock | json2bash > $TEMPASSIN/tmp-zblock + logthis "ZBLOCK $zblock READ" + + # Supposingly you are on a safe environment and you only have + # access to your chain, I would consider mild secure to source + # the files into your bash. + # File an issue/pull request if you think it can be done better!! + source $TEMPASSIN/tmp-zblock + logthis "ZBLOCK SOURCED" + + # Same as above applies to BLOCK and DATA subparts of each ZBLOCK + # BLOCKS + #echo'"block":"'$block'",' + ipfs cat $block | json2bash > $TEMPASSIN/tmp-block + source $TEMPASSIN/tmp-block + logthis "BLOCK $block SOURCED" + touch $BLOCKDIR/$block + logthis "BLOCK REFERENCED" + module="$(echo $action | sed -e 's/\// /g' | awk '{ print $1 }')" + logthis "DATA is $module module." + command="$(echo $action | sed -e 's/\// /g' | awk '{ print $2 }')" + logthis "COMMAND is $command" + if [ ! -v $timestamp ] + then + echo "$timestamp : $zblock -> $block -> $previous" + fi + #echo'"block_signature":"'$block_signature'",' + #echo'"detach":"'$detach'",' + #echo'"module":"'$module'",' + #echo'"action":"'$command'",' + #echo'"gpg":"'$gpg'",' + #profile show $data + # DATA (but we don't source it's stuff) + # Only print to stdout + #ipfs cat $data + touch $DATADIR/$data + + # Now, since we sourced the BLOCK to our terminal, we can search + # for $previous variable. In case we don't find one, we exit with + # code 0 + if [ -v $previous ] + then + logthis "Block $block has no previous zblock" + echo "Chain with no genesis" + #echo'"previous":"genesis"},{"genesis":"genesis"}]' + exit 0 + + # Otherwise, we inform of the sequence + else + ##echo"$zblock after $previous" + #echo'"previous":"'$previous'"},' + zblock=$previous + fi + + # Now check if it is equal to the seed + # which apparently means we reached the seed. + elif [ "$zblock" == "$seed" ] + then + ##echo"$zblock is GENESIS block" + ##echo'"'$zblock'":{ "GENESIS":"GENESIS"}] ' + #echo'{"genesis":"genesis"}]' + echo "Chain is OK with GENESIS block = $seed" + logthis "Counter $counter" + exit 0 + fi + # And finally, if nothing is there exit with error + else + #echo"Check not passed... No previous IPFS CID" + exit 1 + fi +done |