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Diffstat (limited to 'bin/ak-zchain-chk')
| -rwxr-xr-x | bin/ak-zchain-chk | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/bin/ak-zchain-chk b/bin/ak-zchain-chk new file mode 100755 index 0000000..c75dc4b --- /dev/null +++ b/bin/ak-zchain-chk @@ -0,0 +1,143 @@ +#!/bin/bash +fix="0" +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" +} + +if [ ! -z "$1" ] && [ "$1" == "-h" ] || [ "$1" == "--help" ] +then + usage + exit +elif [ ! -z "$1" ] && [ "$1" == "-f" ] || [ "$1" == "--fix" ] +then + fix="1" + entrance="$(cat $ZLATEST)" +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" +declare -A blocks_found + +# 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 "[INFO]" "Examining $zblock" + + # We create files named after each ZBLOCK IPFS CID for later + # reference. Files are empty. + touch $ZBLOCKDIR/$zblock + logthis "[INFO]" "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 "[INFO]" "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 "[INFO]" "ZBLOCK SOURCED" + + # Same as above applies to BLOCK and DATA subparts of each ZBLOCK + # BLOCKS + ipfs cat $block | json2bash > $TEMPASSIN/tmp-block + source $TEMPASSIN/tmp-block + logthis "[INFO]" "BLOCK $block SOURCED" + touch $BLOCKDIR/$block + logthis "[INFO]" "BLOCK REFERENCED" + module="$(echo $action | sed -e 's/\// /g' | awk '{ print $1 }')" + logthis "[INFO]" "DATA is $module module." + command="$(echo $action | sed -e 's/\// /g' | awk '{ print $2 }')" + logthis "[INFO]" "COMMAND is $command" + if [ ! -v $timestamp ] + then + echo "$timestamp : $zblock -> $block -> $previous" + blocks_found[$counter]="$block" + fi + 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 "[ERROR]" "Block $block has no previous zblock" + echo "Chain with no genesis" + if [ "$fix" == "1" ] + then + echo "LOL" + else + echo "Blocks found and need repacking..." + for value in ${blocks_found[@]} + do + echo $value + ipfs cat $value | json_pp + done + fi + exit 0 + # Otherwise, we inform of the sequence + else + zblock=$previous + fi + # Now check if it is equal to the seed + # which apparently means we reached the seed. + elif [ "$zblock" == "$seed" ] + then + echo "Chain is OK with GENESIS block = $seed" + logthis "[INFO]" "Counter $counter" + exit 0 + fi + # And finally, if nothing is there exit with error + else + logthis "[ERROR]" "Check not passed... No previous IPFS CID" + exit 1 + fi +done |