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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /examples/auth/crackcheck
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'examples/auth/crackcheck')
-rw-r--r--examples/auth/crackcheck/Makefile25
-rw-r--r--examples/auth/crackcheck/crackcheck.c141
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);
+}
+