From a902c812e98dd53cf9f16b5175f7c1f87e780b53 Mon Sep 17 00:00:00 2001
From: Cameron Katri <me@cameronkatri.com>
Date: Sun, 22 May 2022 22:25:04 -0400
Subject: Import strtonum.c because it is not POSIX

---
 Makefile          |  1 +
 append.c          |  2 ++
 compat.h          |  1 +
 compat_strtonum.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 info.c            |  2 ++
 5 files changed, 74 insertions(+)
 create mode 100644 compat.h
 create mode 100644 compat_strtonum.c

diff --git a/Makefile b/Makefile
index fb2bd37..a4cb8f9 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,7 @@ OBJS = tc.o
 OBJS += append.o create.o info.o remove.o
 OBJS += machoparse/cdhash.o cache_from_tree.o sort.o
 OBJS += uuid/gen_uuid.o uuid/pack.o uuid/unpack.o uuid/parse.o uuid/unparse.o uuid/copy.o
+OBJS += compat_strtonum.o
 
 PREFIX ?= ~/.local
 BINDIR ?= $(PREFIX)/bin
diff --git a/append.c b/append.c
index a5cd031..184c1ff 100644
--- a/append.c
+++ b/append.c
@@ -36,6 +36,8 @@
 #include "trustcache.h"
 #include "uuid/uuid.h"
 
+#include "compat.h"
+
 int
 tcappend(int argc, char **argv)
 {
diff --git a/compat.h b/compat.h
new file mode 100644
index 0000000..87ef8e4
--- /dev/null
+++ b/compat.h
@@ -0,0 +1 @@
+long long strtonum(const char*, long long, long long, const char**);
diff --git a/compat_strtonum.c b/compat_strtonum.c
new file mode 100644
index 0000000..aa433d8
--- /dev/null
+++ b/compat_strtonum.c
@@ -0,0 +1,68 @@
+/*-
+ * 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.
+ *
+ *	$OpenBSD: strtonum.c,v 1.7 2013/04/17 18:40:58 tedu Exp $
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.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;
+	int error = 0;
+	char *ep;
+	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 (errno == EINVAL || 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);
+}
diff --git a/info.c b/info.c
index 8de924c..86aa78b 100644
--- a/info.c
+++ b/info.c
@@ -33,6 +33,8 @@
 
 #include "trustcache.h"
 
+#include "compat.h"
+
 int
 tcinfo(int argc, char **argv)
 {
-- 
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