browser-plugins-update.sh

   1 #!/bin/sh
   2 # Author: Elan Ruusamäe <glen@pld-linux.org>
   3 # Date: 2006-09-13, Initial revision
   4 # Date: 2006-10-31, Added arch checking
   5 #
   6 # For more information see browser-plugins.README
   7 #
   8 # TODO
   9 # - implement uninstall
  10
  11 sysconfdir='/etc/browser-plugins'
  12 browsersdir="$sysconfdir/browsers.d"
  13 blacklistdir="$sysconfdir/blacklist.d"
  14 plugindirs='/usr/lib/browser-plugins /usr/lib64/browser-plugins'
  15
  16 # bool in_blacklist(char *blacklistfile, char *pluginfile)
  17 # returns true if pluginfile is listed in blacklistfile
  18 in_blacklist() {
  19         local blacklistfile="$1"
  20         local pluginfile="$2"
  21         while read glob; do
  22                 if [[ "$glob" = \#* ]] || [[ "$glob" = "" ]]; then
  23                         continue
  24                 fi
  25                 if [[ "$pluginfile" = $glob ]]; then
  26                         echo >&3 "  $pluginfile blacklisted with $glob ($blacklistfile)"
  27                         return 0
  28                 fi
  29         done < $blacklistfile
  30
  31         return 1
  32 }
  33
  34 # bool arch_compatible(char *browser, char *plugindir)
  35 # returns true if browser and plugindir are from same arch
  36 arch_compatible() {
  37         local browser="$1"
  38         local plugindir="$2"
  39
  40         if ([[ "$browser" = *.x86_64 ]] && [[ "$plugindir" != */lib64/* ]]) || \
  41                 ([[ "$browser" != *.x86_64 ]] && [[ "$plugindir" = */lib64/* ]]); then
  42                 echo >&3 "  $browser not compatible with $plugindir"
  43                 return 1
  44         fi
  45         return 0
  46 }
  47
  48 # bool blacklisted(char *browser, char *pluginfile)
  49 # returns true if pluginfile is blacklisted for browser
  50 # returns also true if pluginfile is from incompatible arch
  51 blacklisted() {
  52         local browser="$1"
  53         local pluginfile="$2"
  54         # check browser blacklist file
  55         if [ -f "$blacklistdir/$browser.blacklist" ]; then
  56                 if in_blacklist "$blacklistdir/$browser.blacklist" "$pluginfile"; then
  57                         return 0
  58                 fi
  59         fi
  60         # retrun true for now
  61         return 1
  62 }
  63
  64 # char **get_browsers(void)
  65 # returns list of installed browsers
  66 get_browsers() {
  67         for dir in "$browsersdir"/*.*; do
  68                 if [ -L "$dir" ]; then
  69                         if [ ! -d "$dir" ]; then
  70                                 echo >&2 "$0: WARNING: plugindir $dir is not pointing to directory, browser ignored"
  71                                 continue
  72                         fi
  73                         dir="${dir#$browsersdir/}"
  74                         browsers="$browsers $dir"
  75                 fi
  76         done
  77
  78         echo >&3 "browsers: $browsers"
  79 }
  80
  81 # void update_nspluginwrapper(void)
  82 # update nspluginwrapper links
  83 update_nspluginwrapper() {
  84         [ -x /usr/bin/nspluginwrapper ] || return
  85
  86         umask 002
  87         # call it always in install mode, as update mode does not update existing links
  88         /usr/bin/nspluginwrapper -a -i
  89
  90         # this will remove oudated plugins
  91         for a in /usr/lib64/browser-plugins/npwrapper.*.so; do
  92                 [ -f $a ] || continue
  93                 /usr/bin/nspluginwrapper -v -u $a
  94         done
  95
  96         # run install again after nsplugin wrappers
  97         install_plugins
  98 }
  99
 100 # char *browserplugindir(char *)
 101 # returns plugin directory for browser
 102 browserplugindir() {
 103         local browser="$1"
 104         local dir
 105         dir=$(readlink "$browsersdir/$browser")
 106         if [ ! -d "$dir" -o -z "$dir" ]; then
 107                 echo >&2 "$0: ERROR: could not resolve plugindir for $browser"
 108                 exit 1
 109         fi
 110         echo "$dir"
 111 }
 112
 113 # kill dead links to plugins from browser dirs.
 114 # dead links appear if plugin is removed or if newer plugin version no longer
 115 # includes previously packaged file
 116 remove_plugins() {
 117         for browser in $browsers; do
 118                 find $(browserplugindir "$browser") -type l | while read link; do
 119                         if [ ! -f "$link" ]; then
 120                                 echo "Removing $link"
 121                                 rm -f "$link"
 122                         fi
 123                 done
 124         done
 125 }
 126
 127 install_plugins() {
 128         # link new plugins
 129         for plugindir in $plugindirs; do
 130                 echo >&3
 131                 echo >&3 "check $plugindir"
 132
 133                 # skip non-existing plugindirs
 134                 [ -d "$plugindir" ] || continue
 135
 136                 cd "$plugindir"
 137                 find -type f -o -type l | while read line; do
 138                         pluginfile="${line#./}"
 139                         echo >&3 "pluginfile: $pluginfile"
 140                         for browser in $browsers; do
 141                                 echo >&3 " check $pluginfile for $browser"
 142                                 browserplugindir=$(browserplugindir "$browser")
 143                                 link="$browserplugindir/$pluginfile"
 144
 145                                 if ! arch_compatible "$browser" "$plugindir"; then
 146                                         continue
 147                                 fi
 148
 149                                 if blacklisted "$browser" "$pluginfile"; then
 150                                         # just in case unlink it
 151                                         if [ -f "$link" ]; then
 152                                                 echo "Removing $pluginfile from $browserplugindir"
 153                                                 rm -f "$link"
 154                                         fi
 155                                 else
 156                                         # skip existing links
 157                                         [ ! -L $link ] || continue
 158                                         if [[ "$pluginfile" = */* ]]; then
 159                                                 # FIXME: what's the proper handling for this?
 160                                                 echo >&2 "$0: Warning: pluginfile $pluginfile includes subdir, file ignored"
 161                                                 continue
 162                                         fi
 163                                         echo "Installing $pluginfile to $browserplugindir"
 164                                         ln -s "$plugindir/$pluginfile" "$link"
 165                                 fi
 166                         done
 167                 done
 168         done
 169 }
 170
 171 if [[ "$*" = *debug* ]]; then
 172         exec 3>&2
 173 else
 174         exec 3>/dev/null
 175 fi
 176
 177 get_browsers
 178
 179 remove_plugins
 180 install_plugins
 181 update_nspluginwrapper