2 files changed, 166 insertions, 0 deletions
diff --git a/examples/auth/crackcheck/Makefile b/examples/auth/crackcheck/Makefile
new file mode 100644
index 0000000..edc7645
--- /dev/null
+++ b/examples/auth/crackcheck/Makefile
@@ -0,0 +1,25 @@
+# C compiler
+#CC=cc
+CC=gcc
+
+# Uncomment the following to add symbols to the code for debugging
+#DEBUG=-g -Wall
+
+# Optimization for the compiler
+#OPTIMIZE=
+OPTIMIZE=-O2
+
+CFLAGS= $(DEBUG) $(OPTIMIZE)
+
+OBJS = crackcheck.o
+LIBS = -lcrack
+
+crackcheck: $(OBJS)
+	$(CC) $(CFLAGS) -o crackcheck $(OBJS) $(LIBS)
+
+clean:
+	rm -f core *.o crackcheck
+
+install: crackcheck
+	install -m 555 crackcheck $(PREFIX)/sbin/crackcheck
+
diff --git a/examples/auth/crackcheck/crackcheck.c b/examples/auth/crackcheck/crackcheck.c
new file mode 100644
index 0000000..c303775
--- /dev/null
+++ b/examples/auth/crackcheck/crackcheck.c
@@ -0,0 +1,141 @@
+#include <memory.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <crack.h>
+#include <unistd.h>
+
+void usage(char *command) {
+	char *c, *comm;
+
+	comm = command;
+	while ((c = strrchr(comm, '/')) != NULL) {
+		comm = c + 1;
+	}
+
+	fprintf(stderr, "Usage: %s [-c] [-s] [-d <dictionary>]\n\n", comm);
+	fprintf(stderr, "     -c    enables NT like complexity checks\n");
+	fprintf(stderr, "     -d <dictionary file>    for cracklib\n");
+	fprintf(stderr, "     -s    simple check use NT like checks ONLY\n\n");
+	fprintf(stderr, "The password is read via stdin.\n\n");
+	exit(-1);
+}
+
+int complexity(char* passwd)
+{
+	/* TG 26.10.2005
+	 * check password for complexity like MS Windows NT 
+	 */
+
+	int c_upper = 0;
+	int c_lower = 0;
+	int c_digit = 0;
+	int c_punct = 0;
+	int c_tot = 0;
+	int i, len;
+
+	if (!passwd) goto fail;
+	len = strlen(passwd);
+
+	for (i = 0; i < len; i++) {
+
+		if (c_tot >= 3) break;
+
+		if (isupper(passwd[i])) {
+			if (!c_upper) {
+				c_upper = 1;
+				c_tot += 1;
+			}
+			continue;
+		}
+		if (islower(passwd[i])) {
+			if (!c_lower) {
+				c_lower = 1;
+				c_tot += 1;
+			}
+			continue;
+		}
+		if (isdigit(passwd[i])) {
+			if (!c_digit) {
+				c_digit = 1;
+				c_tot += 1;
+			}
+			continue;
+		}
+		if (ispunct(passwd[i])) {
+			if (!c_punct) {
+				c_punct = 1;
+				c_tot += 1;
+			}
+			continue;
+		}
+	}
+
+	if ((c_tot) < 3) goto fail;
+	return 0;
+
+fail:
+	fprintf(stderr, "ERR Complexity check failed\n\n");
+	return -4;
+}
+
+int main(int argc, char **argv) {
+	extern char *optarg;
+	int c, ret, complex_check = 0, simplex_check = 0;
+
+	char f[256];
+	char *dictionary = NULL;
+	char *password;
+	const char *reply;
+
+	while ( (c = getopt(argc, argv, "d:cs")) != EOF){
+		switch(c) {
+		case 'd':
+			dictionary = strdup(optarg);
+			break;
+		case 'c':
+			complex_check = 1;
+			break;
+		case 's':
+			complex_check = 1;
+			simplex_check = 1;
+			break;
+		default:
+			usage(argv[0]);
+		}
+	}
+
+	if (!simplex_check && dictionary == NULL) {
+		fprintf(stderr, "ERR - Missing cracklib dictionary\n\n");
+		usage(argv[0]);
+	} 
+
+	fflush(stdin);
+	password = fgets(f, sizeof(f), stdin);
+
+	if (password == NULL) {
+		fprintf(stderr, "ERR - Failed to read password\n\n");
+		exit(-2);
+	}
+
+	if (complex_check) {
+		ret = complexity(password);
+		if (ret) {
+			exit(ret);
+		}
+	}
+
+	if (simplex_check) {
+		exit(0);
+	}
+
+	reply = FascistCheck(password, dictionary);
+	if (reply != NULL) {
+		fprintf(stderr, "ERR - %s\n\n", reply);
+		exit(-3);
+	}
+
+	exit(0);
+}
+