Add missing logwrap.c

plugins/sudoers/logwrap.c

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2011 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * 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 <config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+
+#include "sudoers.h"
+
+void
+writeln_wrap(FILE *fp, char *line, size_t len, size_t maxlen)
+{
+    char *indent = "";
+    char *beg = line;
+    char *end;
+
+    /*
+     * Print out line with word wrap around maxlen characters.
+     */
+    beg = line;
+    while (len > maxlen) {
+	end = beg + maxlen;
+	while (end != beg && *end != ' ')
+	    end--;
+	if (beg == end) {
+	    /* Unable to find word break within maxlen, look beyond. */
+	    end = strchr(beg + maxlen, ' ');
+	    if (end == NULL)
+		break;	/* no word break */
+	}
+	fprintf(fp, "%s%.*s\n", indent, (int)(end - beg), beg);
+	while (*end == ' ')
+	    end++;
+	len -= (end - beg);
+	beg = end;
+	if (indent[0] == '\0') {
+	    indent = LOG_INDENT;
+	    maxlen -= sizeof(LOG_INDENT) - 1;
+	}
+    }
+    /* Print remainder, if any. */
+    if (len)
+	fprintf(fp, "%s%s\n", indent, beg);
+}