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authorDamien Miller <djm@mindrot.org>2005-05-26 20:48:25 +1000
committerDamien Miller <djm@mindrot.org>2005-05-26 20:48:25 +1000
commitde3cb0a3dc1bd98762afa3d71f3ffcdb76029fad (patch)
tree8c0729f879a4458a36ef691480c553382ac2775a /openbsd-compat/strtonum.c
parent84ce9b455d04e7f145d43ef8dac2ddc59e41802d (diff)
- (djm) [configure.ac openbsd-compat/Makefile.in]
[openbsd-compat/openbsd-compat.h openbsd-compat/strtonum.c] Add strtonum(3) from OpenBSD libc, new code needs it. Unfortunately Linux forces us to do a bizarre dance with compiler options to get LLONG_MIN/MAX; Spotted by and ok dtucker@
Diffstat (limited to 'openbsd-compat/strtonum.c')
-rw-r--r--openbsd-compat/strtonum.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/openbsd-compat/strtonum.c b/openbsd-compat/strtonum.c
new file mode 100644
index 00000000..b681ed83
--- /dev/null
+++ b/openbsd-compat/strtonum.c
@@ -0,0 +1,69 @@
+/* OPENBSD ORIGINAL: lib/libc/stdlib/strtonum.c */
+
+/* $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $ */
+
+/*
+ * Copyright (c) 2004 Ted Unangst and Todd Miller
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+#ifndef HAVE_STRTONUM
+#include <limits.h>
+
+#define INVALID 1
+#define TOOSMALL 2
+#define TOOLARGE 3
+
+long long
+strtonum(const char *numstr, long long minval, long long maxval,
+ const char **errstrp)
+{
+ long long ll = 0;
+ char *ep;
+ int error = 0;
+ struct errval {
+ const char *errstr;
+ int err;
+ } ev[4] = {
+ { NULL, 0 },
+ { "invalid", EINVAL },
+ { "too small", ERANGE },
+ { "too large", ERANGE },
+ };
+
+ ev[0].err = errno;
+ errno = 0;
+ if (minval > maxval)
+ error = INVALID;
+ else {
+ ll = strtoll(numstr, &ep, 10);
+ if (numstr == ep || *ep != '\0')
+ error = INVALID;
+ else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
+ error = TOOSMALL;
+ else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
+ error = TOOLARGE;
+ }
+ if (errstrp != NULL)
+ *errstrp = ev[error].errstr;
+ errno = ev[error].err;
+ if (error)
+ ll = 0;
+
+ return (ll);
+}
+
+#endif /* HAVE_STRTONUM */