1 files changed, 137 insertions, 0 deletions
diff --git a/pwgen.c b/pwgen.c
new file mode 100644
index 0000000..84a8284
--- /dev/null
+++ b/pwgen.c
@@ -0,0 +1,137 @@
+/*
+ * pwgen.c --- generate secure passwords
+ *
+ * Copyright (C) 2001 by Theodore Ts'o
+ * 
+ * This file may be distributed under the terms of the GNU Public
+ * License.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+
+#include "pwgen.h"
+
+struct pwgen_func generators[] = {
+	{ "phonemes",	pw_phonemes,	0 },
+	{ "rand",	pw_rand,	0 },
+	{ 0,		0,		0 }
+};
+
+/* Program parameters set via getopt */
+
+int	pw_length = 8;
+int	num_pw = -1;
+int	case_flag = 0;
+int	numeric_flag = 0;
+int	do_columns = 0;
+
+#ifdef HAVE_GETOPT_LONG
+struct option pwgen_options[] = {
+	{ "alt-phonics", no_argument, 0, 'a' },
+	{ "capitalize", no_argument, 0, 'c' },
+	{ "numerals", no_argument, 0, 'n'},
+	{ "num-passwords", required_argument, 0, 'N'},
+	{ "secure", no_argument, 0, 's' },
+	{ "help", no_argument, 0, 'h'},
+	{ "no-numerals", no_argument, &numeric_flag, 0 },
+	{ "no-capitalize", no_argument, &case_flag, 0 },
+	{ 0, 0, 0, 0}
+};
+#endif
+
+int main(int argc, char **argv)
+{
+	int	term_width = 80;
+	int	c, i, num_cols;
+	char	*buf, *tmp;
+	void	(*pwgen)(char *buf, int size, int pw_flags);
+
+	pwgen = pw_phonemes;
+	if (isatty(1)) {
+		do_columns = 1;
+		case_flag = PW_ONE_CASE;
+		numeric_flag = PW_ONE_NUMBER;
+	}
+
+	while (1) {
+#ifdef HAVE_GETOPT_LONG
+		c = getopt_long(argc, argv, "1aCcnN:sh", pwgen_options, 0);
+#else
+		c = getopt(argc, argv, "1aCcnN:sh");
+#endif
+		if (c == -1)
+			break;
+		switch (c) {
+		case 'a':
+			break;
+		case 'c':
+			case_flag = PW_ONE_CASE;
+			break;
+		case 'n':
+			numeric_flag = PW_ONE_NUMBER;
+			break;
+		case 'N':
+			num_pw = strtol(optarg, &tmp, 0);
+			if (*tmp) {
+				fprintf(stderr,
+					"Invalid number of passwords: %s\n",
+					optarg);
+				exit(1);
+			}
+			break;
+		case 's':
+			pwgen = pw_rand;
+			break;
+		case 'C':
+			do_columns = 1;
+			break;
+		case '1':
+			do_columns = 0;
+			break;
+		}
+	}
+	if (optind < argc) {
+		pw_length = strtol(argv[optind], &tmp, 0);
+		if (*tmp) {
+			fprintf(stderr, "Invalid password length: %s\n",
+				argv[optind]);
+			exit(1);
+		}
+		optind++;
+	}
+
+	if (optind < argc) {
+		num_pw = strtol(argv[optind], &tmp, 0);
+		if (*tmp) {
+			fprintf(stderr, "Invalid number of passwords: %s\n",
+				argv[optind]);
+			exit(1);
+		}
+	}
+	
+	if (do_columns) 
+		num_cols = term_width / (pw_length+1);
+	if (num_pw < 0)
+		num_pw = do_columns ? num_cols * 20 : 1;
+	
+	buf = malloc(pw_length+1);
+	if (!buf) {
+		fprintf(stderr, "Couldn't malloc password buffer.\n");
+		exit(1);
+	}
+	for (i=0; i < num_pw; i++) {
+		pwgen(buf, pw_length, case_flag | numeric_flag);
+		if (!do_columns || ((i % num_cols) == (num_cols-1)))
+			printf("%s\n", buf);
+		else
+			printf("%s ", buf);
+	}
+	if ((i % num_cols) != 0 && (num_cols > 1))
+		fputc('\n', stdout);
+	free(buf);
+}