From e82dd35869e00b2fb00b6907b5fc3a960981bc6e Mon Sep 17 00:00:00 2001 From: Dennis Camera Date: Mon, 30 Sep 2019 18:50:20 +0200 Subject: [PATCH] [__file] stat explorer patch for systems without stat(1) Some embedded systems (like OpenWrt) do not ship a stat(1) binary. This workaround parses the output of ls(1) and /etc/passwd, /etc/group to gather the information needed. --- cdist/conf/type/__file/explorer/stat | 64 ++++++++++++++++++++-------- 1 file changed, 46 insertions(+), 18 deletions(-) diff --git a/cdist/conf/type/__file/explorer/stat b/cdist/conf/type/__file/explorer/stat index 13c1c208..91c8cc84 100755 --- a/cdist/conf/type/__file/explorer/stat +++ b/cdist/conf/type/__file/explorer/stat @@ -2,6 +2,7 @@ # # 2013 Steven Armstrong (steven-cdist armstrong.cc) # 2019 Nico Schottelius (nico-cdist at schottelius.org) +# 2020 Dennis Camera (dennis.camera at ssrq-sds-fds.ch) # # This file is part of cdist. # @@ -21,29 +22,54 @@ destination="/$__object_id" +fallback() { + # Fallback: Patch the output together, manually. + + ls_line=$(ls -ldn "$destination") + + uid=$(echo "$ls_line" | awk '{ print $3 }') + gid=$(echo "$ls_line" | awk '{ print $4 }') + + owner=$(awk -F: -v uid="$uid" '$3 == uid { print $1; f=1 } END { if (!f) print "UNKNOWN" }' /etc/passwd) + group=$(awk -F: -v uid="$uid" '$3 == uid { print $1; f=1 } END { if (!f) print "UNKNOWN" }' /etc/group) + + mode_text=$(echo "$ls_line" | awk '{ print $1 }') + mode=$(echo "$mode_text" | awk '{ k=0; for (i=0; i<=8; i++) k += ((substr($1, i+2, 1) ~ /[rwx]/) * 2^(8-i)); printf("%0o", k) }') + + size=$(echo "$ls_line" | awk '{ print $5 }') + links=$(echo "$ls_line" | awk '{ print $2 }') + + printf 'type: %s\nowner: %d %s\ngroup: %d %s\nmode: %s %s\nsize: %d\nlinks: %d\n' \ + "$("$__type_explorer/type")" \ + "$uid" "$owner" \ + "$gid" "$group" \ + "$mode" "$mode_text" \ + "$size" \ + "$links" +} + + # nothing to work with, nothing we could do [ -e "$destination" ] || exit 0 -os=$("$__explorer/os") -case "$os" in - "freebsd"|"netbsd"|"openbsd"|"macosx") + +if ! command -v stat >/dev/null +then + fallback + exit +fi + + +case $("$__explorer/os") +in + freebsd|netbsd|openbsd|macosx) stat -f "type: %HT owner: %Du %Su group: %Dg %Sg mode: %Lp %Sp size: %Dz links: %Dl -" "$destination" | awk '/^type/ { print tolower($0); next; } { print; }' - ;; - alpine) - # busybox stat - stat -c "type: %F -owner: %u %U -group: %g %G -mode: %a %A -size: %s -links: %h -" "$destination" +" "$destination" | awk '/^type/ { print tolower($0); next } { print }' ;; solaris) ls1="$( ls -ld "$destination" )" @@ -77,12 +103,14 @@ links: %h echo "links: $( echo "$ls1" | awk '{print $2}' )" ;; *) - stat --printf="type: %F + # NOTE: Do not use --printf here as it is not supported by BusyBox stat. + # NOTE: BusyBox's stat might not support the "-c" option, in which case + # we fall through to the shell fallback. + stat -c "type: %F owner: %u %U group: %g %G mode: %a %A size: %s -links: %h -" "$destination" - ;; +links: %h" "$destination" 2>/dev/null || fallback + ;; esac