update-pciids.sh

   1 #!/bin/sh
   2
   3 set -e
   4
   5 SRC="https://pci-ids.ucw.cz/v2.2/pci.ids"
   6 DEST=pci.ids
   7 PCI_COMPRESSED_IDS=
   8 GREP=grep
   9
  10 [ "$1" = "-q" ] && quiet=true || quiet=false
  11
  12 # if pci.ids is read-only (because the filesystem is read-only),
  13 # then just skip this whole process.
  14 if ! touch ${DEST} >/dev/null 2>&1 ; then
  15         ${quiet} || echo "${DEST} is read-only, exiting." 1>&2
  16         exit 1
  17 fi
  18
  19 if [ "$PCI_COMPRESSED_IDS" = 1 ] ; then
  20         DECOMP="cat"
  21         SRC="$SRC.gz"
  22         GREP=zgrep
  23 elif which bzip2 >/dev/null 2>&1 ; then
  24         DECOMP="bzip2 -d"
  25         SRC="$SRC.bz2"
  26 elif which gzip >/dev/null 2>&1 ; then
  27         DECOMP="gzip -d"
  28         SRC="$SRC.gz"
  29 else
  30         DECOMP="cat"
  31 fi
  32
  33 if which curl >/dev/null 2>&1 ; then
  34         DL="curl -o $DEST.new $SRC"
  35         ${quiet} && DL="$DL -s -S"
  36 elif which wget >/dev/null 2>&1 ; then
  37         DL="wget --no-timestamping -O $DEST.new $SRC"
  38         ${quiet} && DL="$DL -q"
  39 elif which lynx >/dev/null 2>&1 ; then
  40         DL="eval lynx -source $SRC >$DEST.new"
  41 else
  42         echo >&2 "update-pciids: cannot find curl, wget or lynx"
  43         exit 1
  44 fi
  45
  46 if ! $DL ; then
  47         echo >&2 "update-pciids: download failed"
  48         rm -f $DEST.new
  49         exit 1
  50 fi
  51
  52 if ! $DECOMP <$DEST.new >$DEST.neww ; then
  53         echo >&2 "update-pciids: decompression failed, probably truncated file"
  54         exit 1
  55 fi
  56
  57 if ! $GREP >/dev/null "^C " $DEST.neww ; then
  58         echo >&2 "update-pciids: missing class info, probably truncated file"
  59         exit 1
  60 fi
  61
  62 if [ -f $DEST ] ; then
  63         ln -f $DEST $DEST.old
  64         # --reference is supported only by chmod from GNU file, so let's ignore any errors
  65         chmod -f --reference=$DEST.old $DEST.neww 2>/dev/null || true
  66 fi
  67 mv $DEST.neww $DEST
  68 rm $DEST.new
  69
  70 # Older versions did not compress the ids file, so let's make sure we
  71 # clean that up.
  72 if [ ${DEST%.gz} != ${DEST} ] ; then
  73         rm -f ${DEST%.gz} ${DEST%.gz}.old
  74 fi
  75
  76 ${quiet} || echo "Done."