1 files changed, 54 insertions, 0 deletions
diff --git a/security/generate_mapfile.py b/security/generate_mapfile.py
new file mode 100644
index 0000000000..ec07ff1555
--- /dev/null
+++ b/security/generate_mapfile.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This script processes NSS .def files according to the rules defined in
+# a comment at the top of each one. The files are used to define the
+# exports from NSS shared libraries, with -DEFFILE on Windows, a linker
+# script on Linux, or with -exported_symbols_list on OS X.
+#
+# The NSS build system processes them using a series of sed replacements,
+# but the Mozilla build system is already running a Python script to generate
+# the file so it's simpler to just do the replacement in Python.
+
+import buildconfig
+
+
+def main(output, input):
+    # There's a check in old-configure.in under the system-nss handling
+    # that should match this.
+    if buildconfig.substs['OS_ARCH'] not in ('Linux', 'Darwin'):
+        print "Error: unhandled OS_ARCH %s" % buildconfig.substs['OS_ARCH']
+        return 1
+    is_linux = buildconfig.substs['OS_ARCH'] == 'Linux'
+
+    with open(input, 'rb') as f:
+        for line in f:
+            line = line.rstrip()
+            # Remove all lines containing ';-'
+            if ';-' in line:
+                continue
+            # On non-Linux, remove all lines containing ';+'
+            if not is_linux and ';+' in line:
+                continue
+            # Remove the string ' DATA '.
+            line = line.replace(' DATA ', '')
+            # Remove the string ';+'
+            line = line.replace(';+', '')
+            # Remove the string ';;'
+            line = line.replace(';;', '')
+            # If a ';' is present, remove everything after it,
+            # and on non-Linux, remove it as well.
+            i = line.find(';')
+            if i != -1:
+                if is_linux:
+                    line = line[:i+1]
+                else:
+                    line = line[:i]
+            # On non-Linux, symbols get an underscore in front.
+            if line and not is_linux:
+                output.write('_')
+            output.write(line)
+            output.write('\n')