1 files changed, 72 insertions, 0 deletions
diff --git a/unix/utils/filename.c b/unix/utils/filename.c
new file mode 100644
index 00000000..208483d2
--- /dev/null
+++ b/unix/utils/filename.c
@@ -0,0 +1,72 @@
+/*
+ * Implementation of Filename for Unix, including f_open().
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "putty.h"
+
+Filename *filename_from_str(const char *str)
+{
+    Filename *ret = snew(Filename);
+    ret->path = dupstr(str);
+    return ret;
+}
+
+Filename *filename_copy(const Filename *fn)
+{
+    return filename_from_str(fn->path);
+}
+
+const char *filename_to_str(const Filename *fn)
+{
+    return fn->path;
+}
+
+bool filename_equal(const Filename *f1, const Filename *f2)
+{
+    return !strcmp(f1->path, f2->path);
+}
+
+bool filename_is_null(const Filename *fn)
+{
+    return !fn->path[0];
+}
+
+void filename_free(Filename *fn)
+{
+    sfree(fn->path);
+    sfree(fn);
+}
+
+void filename_serialise(BinarySink *bs, const Filename *f)
+{
+    put_asciz(bs, f->path);
+}
+Filename *filename_deserialise(BinarySource *src)
+{
+    return filename_from_str(get_asciz(src));
+}
+
+char filename_char_sanitise(char c)
+{
+    if (c == '/')
+        return '.';
+    return c;
+}
+
+FILE *f_open(const Filename *filename, char const *mode, bool is_private)
+{
+    if (!is_private) {
+        return fopen(filename->path, mode);
+    } else {
+        int fd;
+        assert(mode[0] == 'w');        /* is_private is meaningless for read,
+                                          and tricky for append */
+        fd = open(filename->path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+        if (fd < 0)
+            return NULL;
+        return fdopen(fd, mode);
+    }
+}