forked from ungleich-public/cdist
Merge branch 'bugfix_type__key_value' of https://github.com/dheule/cdist
This commit is contained in:
Nico Schottelius
commit
9eec4e22fb
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@ -1,6 +1,7 @@
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#!/bin/sh
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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# 2014 Daniel Heule (hda at sfs.biz)
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#
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# This file is part of cdist.
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#
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@ -18,36 +19,85 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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key="$(cat "$__object/parameter/key" 2>/dev/null \
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export key="$(cat "$__object/parameter/key" 2>/dev/null \
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|| echo "$__object_id")"
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state="$(cat "$__object/parameter/state" 2>/dev/null \
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|| echo "present")"
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file="$(cat "$__object/parameter/file")"
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delimiter="$(cat "$__object/parameter/delimiter")"
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value="$(cat "$__object/parameter/value" 2>/dev/null \
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|| echo "__CDIST_NOTSET__")"
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export state="$(cat "$__object/parameter/state")"
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case "$state" in
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absent)
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if grep -q -E "^$key$delimiter+" "$file"; then
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# if the key exists, with whatever value, we will have to remove it
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# so report it as present
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echo present
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else
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# key does not exist
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echo absent
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fi
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;;
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present)
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if grep -q -E "^$key$delimiter+$value$" "$file"; then
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# key exists and value is same
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echo present
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elif grep -q -E "^$key$delimiter+" "$file"; then
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# key exists, but value is empty or different
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echo wrongvalue
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else
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# key does not exist
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echo absent
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fi
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;;
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esac
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file="$(cat "$__object/parameter/file")"
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if [ ! -f "$file" ]; then
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echo "nosuchfile"
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exit
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fi
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export delimiter="$(cat "$__object/parameter/delimiter")"
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export value="$(cat "$__object/parameter/value" 2>/dev/null \
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|| echo "__CDIST_NOTSET__")"
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if [ -f "$__object/parameter/exact_delimiter" ]; then
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export exact_delimiter=1
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else
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export exact_delimiter=0
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fi
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awk -f - "$file" <<"AWK_EOF"
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BEGIN {
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state=ENVIRON["state"]
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key=ENVIRON["key"]
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delimiter=ENVIRON["delimiter"]
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value=ENVIRON["value"]
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exact_delimiter=ENVIRON["exact_delimiter"]
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found=0
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}
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# enter the main loop
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{
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i = index($0,key)
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if(i == 1) {
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delval = substr($0,length(key)+1)
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delpos = index(delval,delimiter)
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if(delpos == 0) {
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# in this case, the delimiter was not found
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next
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}
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if(delpos > 1) {
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spaces = substr(delval,1,delpos-1)
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sub(/[ \t]*/,"",spaces)
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if( length(spaces) > 0 ) {
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# if there are not only spaces between key and delimiter,
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# continue since we we are on the wrong line
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next
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}
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if( exact_delimiter == 1) {
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# we have key and delimiter, but since additional spaces are not alowed
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# return wrongformat
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found=1
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print "wrongformat"
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exit
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}
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}
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found=1
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if(state == "absent") {
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# on state absent, only the ocurance is relevant, so exit here
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print "present"
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exit
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}
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linevalue=substr(delval,delpos + length(delimiter))
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if(exact_delimiter == 0){
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#ok, now strip tabs and whitespaces at the beginning of the value
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sub(/[ \t]*/,"",linevalue)
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}
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# Key with separator found
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if(linevalue == value) {
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# exact match found, so state is present
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print "present"
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}
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else {
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print "wrongvalue"
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}
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exit
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}
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}
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END {
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if(found == 0)
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print "absent"
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}
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AWK_EOF
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@ -0,0 +1,102 @@
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export key="$(cat "$__object/parameter/key" 2>/dev/null \
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|| echo "$__object_id")"
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export state="$(cat "$__object/parameter/state")"
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file="$(cat "$__object/parameter/file")"
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export delimiter="$(cat "$__object/parameter/delimiter")"
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export value="$(cat "$__object/parameter/value" 2>/dev/null \
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|| echo "__CDIST_NOTSET__")"
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if [ -f "$__object/parameter/exact_delimiter" ]; then
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export exact_delimiter=1
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else
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export exact_delimiter=0
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fi
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tmpfile=$(mktemp "${file}.cdist.XXXXXXXXXX")
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# preserve ownership and permissions by copying existing file over tmpfile
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if [ -f "$file" ]; then
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cp -p "$file" "$tmpfile"
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else
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touch "$file"
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fi
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awk -f - "$file" >"$tmpfile" <<"AWK_EOF"
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BEGIN {
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# import variables in a secure way ..
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state=ENVIRON["state"]
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key=ENVIRON["key"]
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delimiter=ENVIRON["delimiter"]
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value=ENVIRON["value"]
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comment=ENVIRON["comment"]
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exact_delimiter=ENVIRON["exact_delimiter"]
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inserted=0
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lastline=""
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lastlinepopulated=0
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line=key delimiter value
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}
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# enter the main loop
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{
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# I dont use regex, this is by design, so we can match against every value without special meanings of chars ...
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i = index($0,key)
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if(i == 1) {
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delval = substr($0,length(key)+1)
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delpos = index(delval,delimiter)
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if(delpos > 1) {
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spaces = substr(delval,1,delpos-1)
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sub(/[ \t]*/,"",spaces)
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if( length(spaces) > 0 ) {
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# if there are not only spaces between key and delimiter,
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# continue since we we are on the wrong line
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if(lastlinepopulated == 1) {
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print lastline
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}
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lastline=$0
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lastlinepopulated=1
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next
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}
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}
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if(state == "absent") {
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if(lastline == comment) {
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# if comment is present, clear lastlinepopulated flag
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lastlinepopulated=0
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}
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# if absent, simple yump over this line
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next
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}
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else {
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# if comment is present and not present in last line
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if (lastlinepopulated == 1) {
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print lastline
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if( comment != "" && lastline != comment) {
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print comment
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}
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lastlinepopulated=0
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}
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inserted=1
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# state is present, so insert correct line here
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print line
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lastline=line
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next
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}
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}
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else {
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if(lastlinepopulated == 1) {
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print lastline
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}
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lastline=$0
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lastlinepopulated=1
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}
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}
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END {
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if(lastlinepopulated == 1) {
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print lastline
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}
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if(inserted == 0 && state == "present" ) {
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if(comment != "" && lastline != comment){
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print comment
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}
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print line
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}
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}
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AWK_EOF
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mv -f "$tmpfile" "$file"
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@ -2,6 +2,7 @@
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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# 2012-2014 Nico Schottelius (nico-cdist at schottelius.org)
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# 2014 Daniel Heule (hda at sfs.biz)
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#
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# This file is part of cdist.
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#
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@ -19,55 +20,56 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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key="$__object_id"
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[ -f "$__object/parameter/key" ] && key="$(cat "$__object/parameter/key")"
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state_should="$(cat "$__object/parameter/state")"
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file="$(cat "$__object/parameter/file")"
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delimiter="$(cat "$__object/parameter/delimiter")"
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# escape double quotes, as that is what we use ourself below
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value_escaped="$(cat "$__object/parameter/value" | sed -e "s/\([\"]\)/\\\\\1/g")"
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state_is="$(cat "$__object/explorer/state")"
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[ "$state_is" = "$state_should" ] && exit 0
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if [ "$state_is" = "$state_should" ]; then
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exit 0
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fi
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# here we check only if the states are valid,
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# emmit messages and
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# let awk do the work ...
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case "$state_should" in
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absent)
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# remove lines starting with key
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cat << DONE
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tmpfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
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# preserve ownership and permissions by copying existing file over tmpfile
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cp -p "$file" "\$tmpfile"
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sed '/^$key\($delimiter\+\)/d' "$file" > "\$tmpfile"
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mv -f "\$tmpfile" "$file"
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DONE
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echo "remove" >> "$__messages_out"
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;;
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present)
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case "$state_is" in
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absent)
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# add new key and value
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printf 'echo "%s%s%s" >> "%s"' "$key" "$delimiter" "$value_escaped" "$file"
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echo "add" >> "$__messages_out"
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absent|nosuchfile)
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# nothing to do
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;;
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wrongvalue)
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# change exisiting value
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cat << DONE
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tmpfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
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# preserve ownership and permissions by copying existing file over tmpfile
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cp -p "$file" "\$tmpfile"
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sed "s|^$key\($delimiter\+\).*|$key\\1$value_escaped|" "$file" > "\$tmpfile"
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mv -f "\$tmpfile" "$file"
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DONE
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echo "changevalue" >> "$__messages_out"
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wrongformat|wrongvalue|present)
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echo "remove" >> "$__messages_out"
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;;
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*)
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echo "Unknown explorer state: $state_is" >&2
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exit 1
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;;
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esac
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;;
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present)
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case "$state_is" in
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nosuchfile)
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echo "create" >> "$__messages_out"
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;;
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absent)
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echo "insert" >> "$__messages_out"
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;;
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wrongformated|wrongvalue)
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echo "change" >> "$__messages_out"
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;;
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present)
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# nothing to do
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;;
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*)
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echo "Unknown explorer state: $state_is" >&2
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exit 1
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;;
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esac
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;;
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*)
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echo "Unknown state: $state_should" >&2
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exit 1
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;;
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esac
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cat "$__type/files/remote_script.sh"
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@ -25,21 +25,36 @@ delimiter::
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OPTIONAL PARAMETERS
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-------------------
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state::
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present or absent, defaults to present. If present, sets the key to value,
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if absent, removes the key from the file.
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present or absent, defaults to present. If present, sets the key to value,
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if absent, removes the key from the file.
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key::
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The key to change. Defaults to object_id.
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The key to change. Defaults to object_id.
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value::
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The value for the key. Optional if state=absent, required otherwise.
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The value for the key. Optional if state=absent, required otherwise.
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comment::
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If supplied, the value will be inserted before the line with the key,
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but only if the key or value must be changed.
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You need to ensure yourself that the line is prefixed with the correct
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comment sign. (for example # or ; or wathever ..)
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BOOLEAN PARAMETERS
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------------------
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exact_delimiter::
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If supplied, treat additional whitespaces between key, delimiter and value
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as wrong value.
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MESSAGES
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--------
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create::
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remove::
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Removed existing key and value
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insert::
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Added key and value
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change::
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Changed value of existing key
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remove::
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Removed existing key and value
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create::
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A new line was inserted in a new file
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EXAMPLES
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@ -55,13 +70,19 @@ __key_value my-fancy-id --file /etc/login.defs --key SYS_UID_MAX --value 666 \
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# Enable packet forwarding
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__key_value net.ipv4.ip_forward --file /etc/sysctl.conf --value 1 \
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--delimiter '='
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--delimiter ' = ' --comment '# my linux kernel should act as a router'
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# Remove existing key/value
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__key_value LEGACY_KEY --file /etc/somefile --state absent --delimiter '='
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--------------------------------------------------------------------------------
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MORE INFORMATION
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----------------
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This type try to handle as many values as possible, so it doesn't use regexes.
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So you need to exactly specify the key and delimiter. Delimiter can be of any lenght.
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SEE ALSO
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--------
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- cdist-type(7)
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@ -0,0 +1 @@
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exact_delimiter
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@ -0,0 +1 @@
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@ -1,3 +1,4 @@
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key
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value
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||||
state
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comment
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||||
|
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