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checksrc: ban unsafe functions

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The list of unsafe functions currently consists of sprintf, vsprintf,
strcat, strncat and gets.

Subsequently, some existing code needed updating to avoid warnings on
this.
This commit is contained in:
Daniel Stenberg 2013-03-06 13:27:51 +01:00
parent 9ceee69ff7
commit 7f963a19ec
10 changed files with 65 additions and 160 deletions
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8
lib/checksrc.pl
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@ -6,7 +6,7 @@
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
# Copyright (C) 2011 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
@ -153,6 +153,12 @@ sub scanfile {
checkwarn($line, length($1)+1, $file, $l, "missing space after close paren");
}
# scan for use of banned functions
if($l =~ /^(.*\W)(sprintf|vsprintf|strcat|strncat|gets)\s*\(/) {
checkwarn($line, length($1), $file, $l,
"use of $2 is banned");
}
# check for open brace first on line but not first column
# only alert if previous line ended with a close paren and wasn't a cpp
# line