1 files changed, 56 insertions, 0 deletions
diff --git a/src/util/neuter.c b/src/util/neuter.c
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+++ b/src/util/neuter.c
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+/*++
+/* NAME
+/*	neuter 3
+/* SUMMARY
+/*	neutralize characters before they can explode
+/* SYNOPSIS
+/*	#include <stringops.h>
+/*
+/*	char	*neuter(buffer, bad, replacement)
+/*	char	*buffer;
+/*	const char *bad;
+/*	int	replacement;
+/* DESCRIPTION
+/*	neuter() replaces bad characters in its input
+/*	by the given replacement.
+/*
+/*	Arguments:
+/* .IP buffer
+/*	The null-terminated input string.
+/* .IP bad
+/*	The null-terminated bad character string.
+/* .IP replacement
+/*	Replacement value for characters in \fIbuffer\fR that do not
+/*	pass the  bad character test.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <stringops.h>
+
+/* neuter - neutralize bad characters */
+
+char   *neuter(char *string, const char *bad, int replacement)
+{
+    char   *cp;
+    int     ch;
+
+    for (cp = string; (ch = *(unsigned char *) cp) != 0; cp++)
+	if (strchr(bad, ch) != 0)
+	    *cp = replacement;
+    return (string);
+}