Add strtoint32 and strtouint32 convenience functions

2 files changed, 97 insertions, 0 deletions

diff --git a/server/util/strtonum.c b/server/util/strtonum.c
new file mode 100644
index 00000000..744e0f71
--- /dev/null
+++ b/server/util/strtonum.c
@@ -0,0 +1,65 @@
+/*
+   SSSD
+
+   SSSD Utility functions
+
+   Copyright (C) Stephen Gallagher <sgallagh@redhat.com>	2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "config.h"
+#include "util/util.h"
+#include "util/strtonum.h"
+
+/* strtoint32 */
+int32_t strtoint32(const char *nptr, char **endptr, int base)
+{
+    long long ret = 0;
+
+    errno = 0;
+    ret = strtoll(nptr, endptr, base);
+
+    if (ret > INT32_MAX) {
+        errno = ERANGE;
+        return INT32_MAX;
+    }
+    else if (ret < INT32_MIN) {
+        errno = ERANGE;
+        return INT32_MIN;
+    }
+
+    /* If errno was set by strtoll, we'll pass it back as-is */
+    return (int32_t)ret;
+}
+
+
+/* strtouint32 */
+uint32_t strtouint32(const char *nptr, char **endptr, int base)
+{
+    long long ret = 0;
+    errno = 0;
+    ret = strtoull(nptr, endptr, base);
+
+    if (ret > UINT32_MAX) {
+        errno = ERANGE;
+        return UINT32_MAX;
+    }
+
+    /* If errno was set by strtoll, we'll pass it back as-is */
+    return (uint32_t)ret;
+}
diff --git a/server/util/strtonum.h b/server/util/strtonum.h
new file mode 100644
index 00000000..45095962
--- /dev/null
+++ b/server/util/strtonum.h
@@ -0,0 +1,32 @@
+/*
+   SSSD
+
+   SSSD Utility functions
+
+   Copyright (C) Stephen Gallagher         2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _STRTONUM_H_
+#define _STRTONUM_H_
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+int32_t strtoint32(const char *nptr, char **endptr, int base);
+uint32_t strtouint32(const char *nptr, char **endptr, int base);
+
+#endif /* _STRTONUM_H_ */