1 files changed, 166 insertions, 0 deletions
diff --git a/sendmail/libsm/strdup.c b/sendmail/libsm/strdup.c
new file mode 100644
index 0000000..7094275
--- /dev/null
+++ b/sendmail/libsm/strdup.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2000-2001, 2003 Sendmail, Inc. and its suppliers.
+ *	All rights reserved.
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the sendmail distribution.
+ *
+ */
+
+#include <sm/gen.h>
+SM_RCSID("@(#)$Id: strdup.c,v 1.15 2003/10/10 17:56:57 ca Exp $")
+
+#include <sm/heap.h>
+#include <sm/string.h>
+
+/*
+**  SM_STRNDUP_X -- Duplicate a string of a given length
+**
+**	Allocates memory and copies source string (of given length) into it.
+**
+**	Parameters:
+**		s -- string to copy.
+**		n -- length to copy.
+**
+**	Returns:
+**		copy of string, raises exception if out of memory.
+**
+**	Side Effects:
+**		allocate memory for new string.
+*/
+
+char *
+sm_strndup_x(s, n)
+	const char *s;
+	size_t n;
+{
+	char *d = sm_malloc_x(n + 1);
+
+	(void) memcpy(d, s, n);
+	d[n] = '\0';
+	return d;
+}
+
+/*
+**  SM_STRDUP -- Duplicate a string
+**
+**	Allocates memory and copies source string into it.
+**
+**	Parameters:
+**		s -- string to copy.
+**
+**	Returns:
+**		copy of string, NULL if out of memory.
+**
+**	Side Effects:
+**		allocate memory for new string.
+*/
+
+char *
+sm_strdup(s)
+	char *s;
+{
+	size_t l;
+	char *d;
+
+	l = strlen(s) + 1;
+	d = sm_malloc_tagged(l, "sm_strdup", 0, sm_heap_group());
+	if (d != NULL)
+		(void) sm_strlcpy(d, s, l);
+	return d;
+}
+
+#if DO_NOT_USE_STRCPY
+
+/*
+**  SM_STRDUP_X -- Duplicate a string
+**
+**	Allocates memory and copies source string into it.
+**
+**	Parameters:
+**		s -- string to copy.
+**
+**	Returns:
+**		copy of string, exception if out of memory.
+**
+**	Side Effects:
+**		allocate memory for new string.
+*/
+
+char *
+sm_strdup_x(s)
+	const char *s;
+{
+	size_t l;
+	char *d;
+
+	l = strlen(s) + 1;
+	d = sm_malloc_tagged_x(l, "sm_strdup_x", 0, sm_heap_group());
+	(void) sm_strlcpy(d, s, l);
+	return d;
+}
+
+/*
+**  SM_PSTRDUP_X -- Duplicate a string (using "permanent" memory)
+**
+**	Allocates memory and copies source string into it.
+**
+**	Parameters:
+**		s -- string to copy.
+**
+**	Returns:
+**		copy of string, exception if out of memory.
+**
+**	Side Effects:
+**		allocate memory for new string.
+*/
+
+char *
+sm_pstrdup_x(s)
+	const char *s;
+{
+	size_t l;
+	char *d;
+
+	l = strlen(s) + 1;
+	d = sm_pmalloc_x(l);
+	(void) sm_strlcpy(d, s, l);
+	return d;
+}
+
+/*
+**  SM_STRDUP_X -- Duplicate a string
+**
+**	Allocates memory and copies source string into it.
+**
+**	Parameters:
+**		s -- string to copy.
+**		file -- name of source file
+**		line -- line in source file
+**		group -- heap group
+**
+**	Returns:
+**		copy of string, exception if out of memory.
+**
+**	Side Effects:
+**		allocate memory for new string.
+*/
+
+char *
+sm_strdup_tagged_x(s, file, line, group)
+	const char *s;
+	char *file;
+	int line, group;
+{
+	size_t l;
+	char *d;
+
+	l = strlen(s) + 1;
+	d = sm_malloc_tagged_x(l, file, line, group);
+	(void) sm_strlcpy(d, s, l);
+	return d;
+}
+
+#endif /* DO_NOT_USE_STRCPY */
+