pacfile/pacfile

   1 #!/bin/bash
   2
   3 #-----------------------------------------------------------
   4 # A utility for discovering which ArchLinux package contains
   5 # a given file. Downloads filelists for all active repos in
   6 # pacman.conf; uses mirrors in order according to pacman's
   7 # mirrorlist file.
   8 #
   9 # Peter Morris 2008
  10 #
  11 # Modified by tuxce.net@gmail.com
  12 #-----------------------------------------------------------
  13
  14 db=/var/lib/pacman/filelists
  15 pacmanconf=/etc/pacman.conf
  16
  17 #-----------------------------------------------------------
  18 # Print active repos in $pacmanconf.
  19 #-----------------------------------------------------------
  20 function list_repos() {
  21     sed -n '/REPOSITORIES/,$ s/^\[\(.*\)\]/\1/p' $pacmanconf
  22 }
  23
  24 #-----------------------------------------------------------
  25 # Download the filelist for repo $1. Assumes $mirrors
  26 # is an array of urls to check for $file.
  27 #-----------------------------------------------------------
  28 function download() {
  29     repo=$1
  30     file="${repo}.files.tar.gz"
  31         shift
  32     #for mirror in $(eval echo \${$repo[*]})
  33     for mirror in $*
  34     do
  35       wget --connect-timeout=15 -P "$db" "$mirror/${file}"
  36       [ -e "${db}/${file}" ] && break
  37     done
  38 }
  39
  40 #-----------------------------------------------------------
  41 # Decompress $1 into dir $2.
  42 #-----------------------------------------------------------
  43 function decompress() {
  44     file=$1
  45     repo=$2
  46
  47     mkdir "${db}/${repo}"
  48     tar -xzf "${db}/${file}" -C "${db}/${repo}"
  49     rm -f "${db}/${file}"
  50 }
  51
  52 #-----------------------------------------------------------
  53 # Download the filelist for each active repo in
  54 # pacman.conf. Try mirrors in order until successful.
  55 #-----------------------------------------------------------
  56 function sync() {
  57         (LC_ALL=C pacman --debug  | grep 'adding new server' \
  58                 | sed "s|.*adding new server URL to database '\(.*\)': \(.*\)|\1 \2|g"
  59                 echo) | while read repo_cur url
  60         do
  61                 [ -z "$repo_ex" ] && repo_ex=$repo_cur
  62                 if [ "$repo_ex" != "$repo_cur" ]
  63                 then
  64                         echo "Fetching filelist for $repo_ex"
  65                         download "$repo_ex" "${list[@]}"
  66                         if [[ $? == 0 ]]; then
  67                                 decompress "$file" "$repo_ex"
  68                         else
  69                                 echo
  70                                 echo "Error: unable to retrieve $file from any mirror."; echo
  71                         fi
  72                         repo_ex=$repo_cur
  73                         list=( )
  74                 fi
  75                 list=( "${list[@]}" $url )
  76         done
  77 }
  78
  79 #-----------------------------------------------------------
  80 # Print usage message.
  81 #-----------------------------------------------------------
  82 function usage() {
  83     echo "usage: $(basename $0) [options] [pattern]"
  84     echo
  85     echo "Search package filelists for [pattern]."
  86     echo "options:"
  87     echo "  $(basename $0) [-h --help]      Print this help message."
  88     echo "  $(basename $0) [-S --sync]      Syncronize package filelists."
  89 }
  90
  91 #-----------------------------------------------------------
  92 # Start of `main'.
  93 #-----------------------------------------------------------
  94 case "$1" in
  95     -S|--sync)
  96         if [[ $EUID != 0 ]]; then
  97             echo "error: you cannot perform this operation unless you are root."
  98             exit 1;
  99         fi
 100
 101         echo "Syncronizing ${db}..."; echo
 102         rm -rf "$db" && mkdir -p "$db"
 103         sync
 104     ;;
 105
 106     -h|--help)
 107         usage
 108     ;;
 109
 110     *)
 111         if [[ $# < 1 ]]; then
 112             echo "not enough parameters"; echo
 113             usage
 114             exit 1
 115         fi
 116
 117         if [[ ! -d "$db" ]]; then
 118             echo "File database \"$db\" does not exist!"
 119             echo "Have you synchronized the database?"; echo
 120             exit 1
 121         fi
 122
 123         grep -rE "$@" "$db" | sed  "s|$db/\(.*\)/files:|\1 |g"
 124     ;;
 125 esac