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 VERSION=unknown
  10 USER_AGENT=update-pciids/$VERSION
  11 QUIET=
  12
  13 [ "$1" = "-q" ] && quiet=true || quiet=false
  14
  15 # if pci.ids is read-only (because the filesystem is read-only),
  16 # then just skip this whole process.
  17 if ! touch ${DEST} >/dev/null 2>&1 ; then
  18         ${quiet} || echo "${DEST} is read-only, exiting." 1>&2
  19         exit 1
  20 fi
  21
  22 if command -v xz >/dev/null 2>&1 ; then
  23         DECOMP="xz -d"
  24         SRC="$SRC.xz"
  25 elif command -v bzip2 >/dev/null 2>&1 ; then
  26         DECOMP="bzip2 -d"
  27         SRC="$SRC.bz2"
  28 elif command -v gzip >/dev/null 2>&1 ; then
  29         DECOMP="gzip -d"
  30         SRC="$SRC.gz"
  31 else
  32         DECOMP="cat"
  33 fi
  34
  35 if command -v curl >/dev/null 2>&1 ; then
  36         ${quiet} && QUIET="-s -S"
  37         dl ()
  38         {
  39                 curl -o $DEST.new --user-agent "$USER_AGENT curl" $QUIET $SRC
  40         }
  41 elif command -v wget >/dev/null 2>&1 ; then
  42         ${quiet} && QUIET="-q"
  43         dl ()
  44         {
  45                 wget --no-timestamping -O $DEST.new --user-agent "$USER_AGENT wget" $QUIET $SRC
  46         }
  47 elif command -v lynx >/dev/null 2>&1 ; then
  48         dl ()
  49         {
  50                 lynx -source -useragent="$USER_AGENT lynx" $SRC >$DEST.new
  51         }
  52 else
  53         echo >&2 "update-pciids: cannot find curl, wget or lynx"
  54         exit 1
  55 fi
  56
  57 if ! dl ; then
  58         echo >&2 "update-pciids: download failed"
  59         rm -f $DEST.new
  60         exit 1
  61 fi
  62
  63 if ! $DECOMP <$DEST.new >$DEST.new.plain ; then
  64         echo >&2 "update-pciids: decompression failed, probably truncated file"
  65         exit 1
  66 fi
  67
  68 if ! $GREP >/dev/null "^C " $DEST.new.plain ; then
  69         echo >&2 "update-pciids: missing class info, probably truncated file"
  70         exit 1
  71 fi
  72
  73 if [ -f $DEST ] ; then
  74         ln -f $DEST $DEST.old
  75         # --reference is supported only by chmod from GNU file, so let's ignore any errors
  76         chmod -f --reference=$DEST.old $DEST.new $DEST.new.plain 2>/dev/null || true
  77 fi
  78
  79 if [ "$PCI_COMPRESSED_IDS" = 1 ] ; then
  80         if [ "${SRC%.gz}" != .gz ] ; then
  81                 # Recompress to gzip
  82                 gzip <$DEST.new.plain >$DEST.new
  83         fi
  84         mv $DEST.new $DEST
  85         rm -f $DEST.new.plain
  86 else
  87         mv $DEST.new.plain $DEST
  88         rm -f $DEST.new
  89 fi
  90
  91 # Older versions did not compress the ids file, so let's make sure we
  92 # clean that up.
  93 if [ ${DEST%.gz} != ${DEST} ] ; then
  94         rm -f ${DEST%.gz} ${DEST%.gz}.old
  95 fi
  96
  97 ${quiet} || echo "Done."