1 files changed, 52 insertions, 0 deletions
diff --git a/security/nss/lib/jar/jarint.c b/security/nss/lib/jar/jarint.c
new file mode 100644
index 0000000000..b0ef7fb210
--- /dev/null
+++ b/security/nss/lib/jar/jarint.c
@@ -0,0 +1,52 @@
+/* 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/. */
+
+/*
+ * Internal libjar routines.
+ */
+
+#include "jar.h"
+#include "jarint.h"
+
+/*-----------------------------------------------------------------------
+ * JAR_FOPEN_to_PR_Open
+ * Translate JAR_FOPEN arguments to PR_Open arguments
+ */
+PRFileDesc*
+JAR_FOPEN_to_PR_Open(const char* name, const char* mode)
+{
+
+    PRIntn prflags = 0, prmode = 0;
+
+    /* Get read/write flags */
+    if (strchr(mode, 'r') && !strchr(mode, '+')) {
+        prflags |= PR_RDONLY;
+    } else if ((strchr(mode, 'w') || strchr(mode, 'a')) &&
+               !strchr(mode, '+')) {
+        prflags |= PR_WRONLY;
+    } else {
+        prflags |= PR_RDWR;
+    }
+
+    /* Create a new file? */
+    if (strchr(mode, 'w') || strchr(mode, 'a')) {
+        prflags |= PR_CREATE_FILE;
+    }
+
+    /* Append? */
+    if (strchr(mode, 'a')) {
+        prflags |= PR_APPEND;
+    }
+
+    /* Truncate? */
+    if (strchr(mode, 'w')) {
+        prflags |= PR_TRUNCATE;
+    }
+
+    /* We can't do umask because it isn't XP.  Choose some default
+	   mode for created files */
+    prmode = 0755;
+
+    return PR_Open(name, prflags, prmode);
+}