1 files changed, 56 insertions, 0 deletions

diff --git a/plugins-scripts/subst.in b/plugins-scripts/subst.in
new file mode 100644
index 00000000..cc0fd1b6
--- /dev/null
+++ b/plugins-scripts/subst.in
@@ -0,0 +1,56 @@
+#!/usr/bin/awk
+
+function which(c,path) {
+        cmd = "test -x " c;
+
+        if (system(cmd)==0) {
+                return c;
+        } 
+
+        sub(/\/.*\//,"",c);
+  for (dir in path) {
+                        cmd = "test -x " path[dir] "/" c;
+                        if (system(cmd)==0) {
+                                        return path[dir] "/" c;
+                        } 
+        }
+
+
+        return c;
+}
+
+BEGIN {
+        split(ENVIRON["PATH"] ":/sbin:/usr/sbin",path,/:/);
+}
+
+# scripting language (first line)
+
+/^#! ?\/.*\/python/ {sub(/^#! ?\/.*\/python/,"#! @PYTHON@");}
+/^#! ?\/.*\/perl/ {sub(/^#! ?\/.*\/perl/,"#! @PERL@");}
+/^#! ?\/.*\/[a-z]{0,2}awk/ {sub(/^#! ?\/.*\/[a-z]{0,2}awk/,"#! @AWK@");}
+/^#! ?\/.*\/sh/ {sub(/^#! ?\/.*\/sh/,"#! @SHELL@");}
+
+# Trusted path mechanism (deprecated)
+
+/^[ \t]*\$ENV[ \t]*\{[ \t'"]*PATH[ \t"']*\}[ \t]*=/ {
+        sub(/\=[ \t]*['"][^"']+["']/,"='@trusted_path@' # autoconf-derived");
+}
+
+/^[\t ]*(export[\t ]*)?PATH[\t ]*=['"]+.+["']$/ {
+        sub(/\=.*$/,"='@trusted_path@' # autoconf-derived");
+}
+
+# Specific programs
+
+#
+/^[^#]/ && /(\/.*)?\/(bin|sbin|lib|libexec)\// {
+        match($0,/(\/.*)?\/(bin|sbin|lib|libexec)\/[-_a-zA-Z0-9]+/);
+        start=RSTART+RLENGTH;
+        c=substr($0,RSTART,RLENGTH);
+        sub(c,which(c,path));
+}
+
+{
+        print;
+}
+