Forum: Cfengine Help
Subject: regexp parameter quoting
Author: jonb1987
Link to topic: https://cfengine.com/forum/read.php?3,21851,21851#msg-21851
I have the following snippets for cfengine 3 (3.0.5)...
#----------------------------------------------------------
bundle agent main {
#----------------------------------------------------------
files:
any::
"/etc/passwd"
comment => "Set compat mode in passwd",
edit_line => fix_line("^+::::::.*", "+::::::/bin/bash");
}
#----------------------------------------------------------
bundle edit_line fix_line(pattern, line) {
#----------------------------------------------------------
# If pattern does not exist
# Add line
# elsif line does not match
# replace with line
# So pattern must be anchored and match whole line
#----------------------------------------------------------
vars:
# Create a regexp string for line with whitespace replaced by \s+
# NOTE: This doesn't actually work as intended: rlne strings are still left
with original literal spaces. Hmm...
"rline" string => execresult("/bin/echo -e \"$(line)\c\" | /usr/bin/perl
-pe 's/\s+/\\s+/g'", "useshell");
classes:
# Check for missing pattern, or incorrect line
"missing" not => regline("$(pattern)","$(edit.filename)");
"wrong" not => regline("$(rline)", "$(edit.filename)"),
comment => "rline : $(rline)";
insert_lines:
missing::
"$(line)";
replace_patterns:
wrong.!missing::
"$(pattern)" replace_with => value("$(line)");
reports:
missing::
"Added to $(edit.filename) : $(line)";
wrong.!missing::
"Fixed in $(edit.filename) : $(line)";
}
But looking in the output I see...
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
cf3 BUNDLE fix_line( {'^+::::::.*','+::::::/bin/bash'} )
cf3 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
cf3
cf3 ? Augment scope fix_line with pattern
cf3 ? Augment scope fix_line with line
cf3
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3 vars in bundle fix_line
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3
cf3
cf3 .........................................................
cf3 Promise handle:
cf3 Promise made by: rline
cf3 .........................................................
cf3
cf3
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3 classes in bundle fix_line
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3
cf3 Regular expression error "nothing to repeat" in expression "^+::::::.*" at 1
cf3 !! Could not parse regular expression '^+::::::.*'
So I quoted the '+' and I still get a similar problem...
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
cf3 BUNDLE fix_line( {'^\+::::::.*','+::::::/bin/bash'} )
cf3 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
cf3
cf3 ? Augment scope fix_line with pattern
cf3 ? Augment scope fix_line with line
cf3
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3 vars in bundle fix_line
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3
cf3
cf3 .........................................................
cf3 Promise handle:
cf3 Promise made by: rline
cf3 .........................................................
cf3
cf3
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3 classes in bundle fix_line
cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
cf3
cf3
cf3 .........................................................
cf3 Promise handle:
cf3 Promise made by: missing
cf3 .........................................................
cf3
cf3 Regular expression error "nothing to repeat" in expression
"+::::::/bin/bash" at 0
cf3 !! Could not parse regular expression '+::::::/bin/bash'
cf3
Is there a way to quote the initial '+' that will work (I also tried [+] by the
way - still fails!)
Any ideas?
Thanks!
Jon B
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