pkgs/servers/http/nix-binary-cache/nix-binary-cache.cgi.in

   1 #! @shell@
   2
   3 STORE_DIR="${NIX_STORE_DIR:-/nix/store}"
   4 MASS_QUERY=0
   5 PRIORITY=75
   6 COMPRESSION=bzip2
   7 KEY=
   8 KEYNAME=na
   9
  10 export NIX_REMOTE=daemon
  11
  12 config="${NIX_BINARY_CACHE_CONFIG:-${HTTP_NIX_BINARY_CACHE_CONFIG:-/etc/nix/nix-binary-cache.cgi.conf}}"
  13 config="$(cd "$(@coreutils@/dirname "$config")";
  14   @coreutils@/pwd)/$(@coreutils@/basename "$config")"
  15 @coreutils@/test -e "$config" && . "$config"
  16
  17 header(){
  18         echo "Content-Type: text/plain; charset=utf-8"
  19         echo
  20 }
  21
  22 header404(){
  23         echo "Status: 404 Not Found"
  24         echo
  25 }
  26
  27 clean_path() {
  28         @gnused@/sed -re "s@^$STORE_DIR/?@@" | @findutils@/xargs
  29 }
  30
  31 storeq(){
  32         @nix@/nix-store -q "$@"
  33 }
  34
  35 sign(){
  36         test -n "$1" &&
  37           @coreutils@/sha256sum | @gnused@/sed -e 's/ .*//' |
  38           @openssl@/openssl rsautl -sign -inkey "$@" | @coreutils@/base64 -w 0
  39 }
  40
  41 case "$QUERY_STRING" in
  42         "")
  43                 header
  44                 echo "Hello, this is a dynamically-generated Nix binary cache"
  45                 ;;
  46         /debug)
  47                 header
  48                 set
  49                 ;;
  50         /nix-cache-info)
  51                 header
  52                 echo "StoreDir: $STORE_DIR"
  53                 echo "WantMassQuery: $MASS_QUERY"
  54                 echo "Priority: $PRIORITY"
  55                 ;;
  56         *.narinfo)
  57                 hash=${QUERY_STRING%.narinfo}
  58                 hash=${hash#/}
  59                 path="$(echo "$STORE_DIR/$hash-"* | @coreutils@/sort | @coreutils@/head -n 1)"
  60                 if [ -n "$path" ] && [ -e "$path" ]; then
  61                         header
  62                         info="$(
  63                         echo "StorePath: $path"
  64                         echo "URL: $(@coreutils@/basename "$path"
  65                           ).nar.$COMPRESSION"
  66                         echo "Compression: $COMPRESSION"
  67                         echo "NarHash: $(storeq --hash "$path")"
  68                         echo "NarSize: $(storeq --size "$path")"
  69                         echo "References: $(storeq --references "$path" |
  70                           @coreutils@/tac | clean_path )"
  71                         echo "Deriver: $(storeq --deriver "$path" |
  72                           clean_path )"
  73                         )"
  74                         signature="$(echo "$info" | sign "$KEY")"
  75
  76                         echo "$info"
  77                         echo "Signature: 1;$KEYNAME;$signature"
  78
  79                 else
  80                         header404
  81                         exit 1
  82                 fi
  83                 ;;
  84         *.nar.xz)
  85                 path="$STORE_DIR${QUERY_STRING%.nar.xz}"
  86                 if [ -n "$path" ] && [ -e "$path" ]; then
  87                         header
  88                         @nix@/nix-store --dump "$path" | @xz@/xz
  89                 else
  90                         header404
  91                         exit 1
  92                 fi
  93                 ;;
  94         *.nar.bzip2)
  95                 path="$STORE_DIR${QUERY_STRING%.nar.bzip2}"
  96                 echo "$path" >&2;
  97                 if [ -n "$path" ] && [ -e "$path" ]; then
  98                         header
  99                         @nix@/nix-store --dump "$path" | @bzip2@/bzip2
 100                 else
 101                         header404
 102                         exit 1
 103                 fi
 104                 ;;
 105 esac