pkgs/build-support/fetchipfs/builder.sh

   1 source $stdenv/setup
   2
   3 # Curl flags to handle redirects, not use EPSV, handle cookies for
   4 # servers to need them during redirects, and work on SSL without a
   5 # certificate (this isn't a security problem because we check the
   6 # cryptographic hash of the output anyway).
   7
   8 set -o noglob
   9
  10 curl="curl            \
  11  --location           \
  12  --max-redirs 20      \
  13  --retry 2            \
  14  --disable-epsv       \
  15  --cookie-jar cookies \
  16  --insecure           \
  17  --speed-time 5       \
  18  -#                   \
  19  --fail               \
  20  $curlOpts            \
  21  $NIX_CURL_FLAGS"
  22
  23 finish() {
  24     runHook postFetch
  25     set +o noglob
  26     exit 0
  27 }
  28
  29 ipfs_add() {
  30     if curl --retry 0 --head --silent "localhost:5001" > /dev/null; then
  31         echo "\e[0m\e[01;36m=IPFS=\e[0m add $ipfs"
  32         tar --owner=root --group=root -cWf "source.tar" $(echo *)
  33         res=$(curl -# -F "file=@source.tar" "localhost:5001/api/v0/tar/add" | sed 's/.*"Hash":"\(.*\)".*/\1/')
  34         if [ $ipfs != $res ]; then
  35             echo "\`ipfs tar add' results in $res when $ipfs is expected"
  36             exit 1
  37         fi
  38         rm "source.tar"
  39     fi
  40 }
  41
  42 echo
  43
  44 mkdir download
  45 cd download
  46
  47 if curl --retry 0 --head --silent "localhost:5001" > /dev/null; then
  48     curlexit=18;
  49     echo "\e[0m\e[01;36m=IPFS=\e[0m get $ipfs"
  50     # if we get error code 18, resume partial download
  51     while [ $curlexit -eq 18 ]; do
  52         # keep this inside an if statement, since on failure it doesn't abort the script
  53         if $curl -C - "http://localhost:5001/api/v0/tar/cat?arg=$ipfs" --output "$ipfs.tar"; then
  54             unpackFile "$ipfs.tar"
  55             rm "$ipfs.tar"
  56             set +o noglob
  57             mv $(echo *) "$out"
  58             finish
  59         else
  60             curlexit=$?;
  61         fi
  62     done
  63 fi
  64
  65 if test -n "$url"; then
  66     curlexit=18;
  67     echo "Downloading $url"
  68     while [ $curlexit -eq 18 ]; do
  69         # keep this inside an if statement, since on failure it doesn't abort the script
  70         if $curl "$url" -O; then
  71             set +o noglob
  72             tmpfile=$(echo *)
  73             unpackFile $tmpfile
  74             rm $tmpfile
  75             ipfs_add
  76             mv $(echo *) "$out"
  77             finish
  78         else
  79             curlexit=$?;
  80         fi
  81     done
  82 fi
  83
  84 echo "\e[01;31merror:\e[0m cannot download $ipfs from ipfs or the given url"
  85 echo
  86 set +o noglob
  87 exit 1