openwrt/package/network/services/samba36/patches/111-owrt_smbpasswd.patch

--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -1017,7 +1017,7 @@ TEST_LP_LOAD_OBJ = param/test_lp_load.o 
 
 PASSWD_UTIL_OBJ = utils/passwd_util.o
 
-SMBPASSWD_OBJ = utils/smbpasswd.o $(PASSWD_UTIL_OBJ) $(PASSCHANGE_OBJ) \
+SMBPASSWD_OBJ = utils/owrt_smbpasswd.o $(PASSWD_UTIL_OBJ) $(PASSCHANGE_OBJ) \
 		$(PARAM_OBJ) $(LIBSMB_OBJ) $(PASSDB_OBJ) \
 		$(GROUPDB_OBJ) $(LIB_NONSMBD_OBJ) $(KRBCLIENT_OBJ) \
 		$(POPT_LIB_OBJ) $(SMBLDAP_OBJ) \
@@ -1789,7 +1789,7 @@ nmbd/nmbd_multicall.o: nmbd/nmbd.c nmbd/
 		echo "$(COMPILE_CC_PATH)" 1>&2;\
 		$(COMPILE_CC_PATH) >/dev/null 2>&1
 
-utils/smbpasswd_multicall.o: utils/smbpasswd.c utils/smbpasswd.o
+utils/smbpasswd_multicall.o: utils/owrt_smbpasswd.c utils/owrt_smbpasswd.o
 	@echo Compiling $<.c
 	@$(COMPILE_CC_PATH) -Dmain=smbpasswd_main && exit 0;\
 		echo "The following command failed:" 1>&2;\
@@ -1798,7 +1798,7 @@ utils/smbpasswd_multicall.o: utils/smbpa
 
 SMBD_MULTI_O = $(patsubst smbd/server.o,smbd/server_multicall.o,$(SMBD_OBJ))
 NMBD_MULTI_O = $(patsubst nmbd/nmbd.o,nmbd/nmbd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(NMBD_OBJ)))
-SMBPASSWD_MULTI_O = $(patsubst utils/smbpasswd.o,utils/smbpasswd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(SMBPASSWD_OBJ)))
+SMBPASSWD_MULTI_O = $(patsubst utils/owrt_smbpasswd.o,utils/smbpasswd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(SMBPASSWD_OBJ)))
 MULTI_O = multi.o
 
 MULTICALL_O = $(sort $(SMBD_MULTI_O) $(NMBD_MULTI_O) $(SMBPASSWD_MULTI_O) $(MULTI_O))
--- /dev/null
+++ b/source3/utils/owrt_smbpasswd.c
@@ -0,0 +1,245 @@
+/*
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "includes.h"
+#include <endian.h>
+#include <stdio.h>
+
+static char buf[256];
+
+static void md4hash(const char *passwd, uchar p16[16])
+{
+	int len;
+	smb_ucs2_t wpwd[129];
+	int i;
+
+	len = strlen(passwd);
+	for (i = 0; i < len; i++) {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+		wpwd[i] = (unsigned char)passwd[i];
+#else
+		wpwd[i] = (unsigned char)passwd[i] << 8;
+#endif
+	}
+	wpwd[i] = 0;
+
+	len = len * sizeof(int16);
+	mdfour(p16, (unsigned char *)wpwd, len);
+	ZERO_STRUCT(wpwd);
+}
+
+
+static bool find_passwd_line(FILE *fp, const char *user, char **next)
+{
+	char *p1;
+
+	while (!feof(fp)) {
+		if(!fgets(buf, sizeof(buf) - 1, fp))
+			continue;
+
+		p1 = strchr(buf, ':');
+
+		if (p1 - buf != strlen(user))
+			continue;
+
+		if (strncmp(buf, user, p1 - buf) != 0)
+			continue;
+
+		if (next)
+			*next = p1;
+		return true;
+	}
+	return false;
+}
+
+/* returns -1 if user is not present in /etc/passwd*/
+static int find_uid_for_user(const char *user)
+{
+	FILE *fp;
+	char *p1, *p2, *p3;
+	int ret = -1;
+
+	fp = fopen("/etc/passwd", "r");
+	if (!fp) {
+		printf("failed to open /etc/passwd");
+		goto out;
+	}
+
+	if (!find_passwd_line(fp, user, &p1)) {
+		printf("User %s not found or invalid in /etc/passwd\n", user);
+		goto out;
+	}
+
+	p2 = strchr(p1 + 1, ':');
+	if (!p2)
+		goto out;
+
+	p2++;
+	p3 = strchr(p2, ':');
+	if (!p1)
+		goto out;
+
+	*p3 = '\0';
+	ret = atoi(p2);
+
+out:
+	if(fp)
+		fclose(fp);
+	return ret;
+}
+
+static void smbpasswd_write_user(FILE *fp, const char *user, int uid, const char *password)
+{
+	static uchar nt_p16[NT_HASH_LEN];
+	int len = 0;
+	int i;
+
+	md4hash(strdup(password), nt_p16);
+
+	len += snprintf(buf + len, sizeof(buf) - len, "%s:%u:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:", user, uid);
+	for(i = 0; i < NT_HASH_LEN; i++)
+		len += snprintf(buf + len, sizeof(buf) - len, "%02X", nt_p16[i]);
+
+	snprintf(buf + len, sizeof(buf) - len, ":[U          ]:LCT-00000001:\n");
+	fputs(buf, fp);
+}
+
+static void smbpasswd_delete_user(FILE *fp)
+{
+	fpos_t r_pos, w_pos;
+	int len = strlen(buf);
+
+	fgetpos(fp, &r_pos);
+	w_pos = r_pos;
+	w_pos.__pos -= len;
+
+	while (fgets(buf, sizeof(buf) - 1, fp)) {
+		int cur_len = strlen(buf);
+
+		fsetpos(fp, &w_pos);
+		fputs(buf, fp);
+		r_pos.__pos += cur_len;
+		w_pos.__pos += cur_len;
+		fsetpos(fp, &r_pos);
+	}
+
+	ftruncate(fileno(fp), w_pos.__pos);
+}
+
+static int usage(const char *progname)
+{
+	fprintf(stderr,
+		"Usage: %s [options] <username>\n"
+		"\n"
+		"Options:\n"
+		"  -s		read password from stdin\n"
+		"  -a		add user\n"
+		"  -x		delete user\n",
+		progname);
+	return 1;
+}
+
+int main(int argc, char **argv)
+{
+	const char *prog = argv[0];
+	const char *user;
+	char *pw1, *pw2;
+	FILE *fp;
+	bool add = false, delete = false, get_stdin = false, found;
+	int ch;
+	int uid;
+
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	while ((ch = getopt(argc, argv, "asx")) != EOF) {
+		switch (ch) {
+		case 's':
+			get_stdin = true;
+			break;
+		case 'a':
+			add = true;
+			break;
+		case 'x':
+			delete = true;
+			break;
+		default:
+			return usage(prog);
+		}
+	}
+
+	if (add && delete)
+		return usage(prog);
+
+	argc -= optind;
+	argv += optind;
+
+	if (!argc)
+		return usage(prog);
+
+	user = argv[0];
+	if (!delete) {
+		uid = find_uid_for_user(user);
+		if (uid < 0) {
+			fprintf(stderr, "Could not find user '%s' in /etc/passwd\n", user);
+			return 2;
+		}
+	}
+
+	fp = fopen("/etc/samba/smbpasswd", "r+");
+	if(!fp) {
+		fprintf(stderr, "Failed to open /etc/samba/smbpasswd");
+		return 3;
+	}
+
+	found = find_passwd_line(fp, user, NULL);
+	if (!add && !found) {
+		fprintf(stderr, "Could not find user '%s' in /etc/samba/smbpasswd\n", user);
+		return 3;
+	}
+
+	if (delete) {
+		smbpasswd_delete_user(fp);
+		goto out;
+	}
+
+	pw1 = get_pass("New SMB password:", get_stdin);
+	if (!pw1)
+		pw1 = strdup("");
+
+	pw2 = get_pass("Retype SMB password:", get_stdin);
+	if (!pw2)
+		pw2 = strdup("");
+
+	if (strcmp(pw1, pw2) != 0) {
+		fprintf(stderr, "Mismatch - password unchanged.\n");
+		goto out_free;
+	}
+
+	if (found)
+		fseek(fp, -strlen(buf), SEEK_CUR);
+	smbpasswd_write_user(fp, user, uid, pw2);
+
+out_free:
+	free(pw1);
+	free(pw2);
+out:
+	fclose(fp);
+	TALLOC_FREE(frame);
+
+	return 0;
+}