mirror of https://github.com/hak5/openwrt.git
278 lines
6.5 KiB
Diff
278 lines
6.5 KiB
Diff
--- a/source3/Makefile.in
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+++ b/source3/Makefile.in
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@@ -1017,7 +1017,7 @@ TEST_LP_LOAD_OBJ = param/test_lp_load.o
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PASSWD_UTIL_OBJ = utils/passwd_util.o
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-SMBPASSWD_OBJ = utils/smbpasswd.o $(PASSWD_UTIL_OBJ) $(PASSCHANGE_OBJ) \
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+SMBPASSWD_OBJ = utils/owrt_smbpasswd.o $(PASSWD_UTIL_OBJ) $(PASSCHANGE_OBJ) \
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$(PARAM_OBJ) $(LIBSMB_OBJ) $(PASSDB_OBJ) \
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$(GROUPDB_OBJ) $(LIB_NONSMBD_OBJ) $(KRBCLIENT_OBJ) \
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$(POPT_LIB_OBJ) $(SMBLDAP_OBJ) \
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@@ -1789,7 +1789,7 @@ nmbd/nmbd_multicall.o: nmbd/nmbd.c nmbd/
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echo "$(COMPILE_CC_PATH)" 1>&2;\
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$(COMPILE_CC_PATH) >/dev/null 2>&1
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-utils/smbpasswd_multicall.o: utils/smbpasswd.c utils/smbpasswd.o
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+utils/smbpasswd_multicall.o: utils/owrt_smbpasswd.c utils/owrt_smbpasswd.o
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@echo Compiling $<.c
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@$(COMPILE_CC_PATH) -Dmain=smbpasswd_main && exit 0;\
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echo "The following command failed:" 1>&2;\
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@@ -1798,7 +1798,7 @@ utils/smbpasswd_multicall.o: utils/smbpa
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SMBD_MULTI_O = $(patsubst smbd/server.o,smbd/server_multicall.o,$(SMBD_OBJ))
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NMBD_MULTI_O = $(patsubst nmbd/nmbd.o,nmbd/nmbd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(NMBD_OBJ)))
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-SMBPASSWD_MULTI_O = $(patsubst utils/smbpasswd.o,utils/smbpasswd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(SMBPASSWD_OBJ)))
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+SMBPASSWD_MULTI_O = $(patsubst utils/owrt_smbpasswd.o,utils/smbpasswd_multicall.o,$(filter-out $(LIB_DUMMY_OBJ),$(SMBPASSWD_OBJ)))
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MULTI_O = multi.o
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MULTICALL_O = $(sort $(SMBD_MULTI_O) $(NMBD_MULTI_O) $(SMBPASSWD_MULTI_O) $(MULTI_O))
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--- /dev/null
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+++ b/source3/utils/owrt_smbpasswd.c
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@@ -0,0 +1,245 @@
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+/*
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+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
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+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful, but WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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+ * more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along with
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+ * this program; if not, write to the Free Software Foundation, Inc., 675
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+ * Mass Ave, Cambridge, MA 02139, USA. */
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+
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+#include "includes.h"
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+#include <endian.h>
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+#include <stdio.h>
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+
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+static char buf[256];
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+
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+static void md4hash(const char *passwd, uchar p16[16])
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+{
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+ int len;
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+ smb_ucs2_t wpwd[129];
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+ int i;
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+
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+ len = strlen(passwd);
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+ for (i = 0; i < len; i++) {
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+#if __BYTE_ORDER == __LITTLE_ENDIAN
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+ wpwd[i] = (unsigned char)passwd[i];
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+#else
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+ wpwd[i] = (unsigned char)passwd[i] << 8;
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+#endif
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+ }
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+ wpwd[i] = 0;
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+
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+ len = len * sizeof(int16);
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+ mdfour(p16, (unsigned char *)wpwd, len);
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+ ZERO_STRUCT(wpwd);
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+}
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+
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+
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+static bool find_passwd_line(FILE *fp, const char *user, char **next)
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+{
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+ char *p1;
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+
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+ while (!feof(fp)) {
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+ if(!fgets(buf, sizeof(buf) - 1, fp))
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+ continue;
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+
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+ p1 = strchr(buf, ':');
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+
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+ if (p1 - buf != strlen(user))
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+ continue;
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+
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+ if (strncmp(buf, user, p1 - buf) != 0)
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+ continue;
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+
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+ if (next)
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+ *next = p1;
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+ return true;
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+ }
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+ return false;
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+}
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+
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+/* returns -1 if user is not present in /etc/passwd*/
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+static int find_uid_for_user(const char *user)
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+{
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+ FILE *fp;
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+ char *p1, *p2, *p3;
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+ int ret = -1;
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+
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+ fp = fopen("/etc/passwd", "r");
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+ if (!fp) {
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+ printf("failed to open /etc/passwd");
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+ goto out;
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+ }
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+
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+ if (!find_passwd_line(fp, user, &p1)) {
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+ printf("User %s not found or invalid in /etc/passwd\n");
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+ goto out;
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+ }
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+
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+ p2 = strchr(p1 + 1, ':');
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+ if (!p2)
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+ goto out;
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+
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+ p2++;
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+ p3 = strchr(p2, ':');
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+ if (!p1)
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+ goto out;
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+
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+ *p3 = '\0';
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+ ret = atoi(p2);
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+
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+out:
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+ if(fp)
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+ fclose(fp);
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+ return ret;
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+}
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+
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+static void smbpasswd_write_user(FILE *fp, const char *user, int uid, const char *password)
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+{
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+ static uchar nt_p16[NT_HASH_LEN];
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+ int len = 0;
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+ int i;
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+
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+ md4hash(strdup(password), nt_p16);
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+
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+ len += snprintf(buf + len, sizeof(buf) - len, "%s:%u:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:", user, uid);
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+ for(i = 0; i < NT_HASH_LEN; i++)
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+ len += snprintf(buf + len, sizeof(buf) - len, "%02X", nt_p16[i]);
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+
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+ snprintf(buf + len, sizeof(buf) - len, ":[U ]:LCT-00000001:\n");
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+ fputs(buf, fp);
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+}
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+
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+static void smbpasswd_delete_user(FILE *fp)
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+{
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+ fpos_t r_pos, w_pos;
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+ int len = strlen(buf);
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+
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+ fgetpos(fp, &r_pos);
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+ w_pos = r_pos;
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+ w_pos.__pos -= len;
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+
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+ while (fgets(buf, sizeof(buf) - 1, fp)) {
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+ int cur_len = strlen(buf);
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+
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+ fsetpos(fp, &w_pos);
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+ fputs(buf, fp);
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+ r_pos.__pos += cur_len;
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+ w_pos.__pos += cur_len;
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+ fsetpos(fp, &r_pos);
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+ }
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+
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+ ftruncate(fileno(fp), w_pos.__pos);
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+}
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+
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+static int usage(const char *progname)
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+{
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+ fprintf(stderr,
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+ "Usage: %s [options] <username>\n"
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+ "\n"
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+ "Options:\n"
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+ " -s read password from stdin\n"
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+ " -a add user\n"
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+ " -x delete user\n",
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+ progname);
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+ return 1;
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+}
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+
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+int main(int argc, char **argv)
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+{
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+ const char *prog = argv[0];
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+ const char *user;
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+ char *pw1, *pw2;
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+ FILE *fp;
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+ bool add = false, delete = false, get_stdin = false, found;
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+ int ch;
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+ int uid;
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+
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+ TALLOC_CTX *frame = talloc_stackframe();
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+
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+ while ((ch = getopt(argc, argv, "asx")) != EOF) {
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+ switch (ch) {
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+ case 's':
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+ get_stdin = true;
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+ break;
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+ case 'a':
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+ add = true;
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+ break;
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+ case 'x':
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+ delete = true;
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+ break;
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+ default:
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+ return usage(prog);
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+ }
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+ }
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+
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+ if (add && delete)
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+ return usage(prog);
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+
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+ argc -= optind;
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+ argv += optind;
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+
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+ if (!argc)
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+ return usage(prog);
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+
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+ user = argv[0];
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+ if (!delete) {
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+ uid = find_uid_for_user(user);
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+ if (uid < 0) {
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+ fprintf(stderr, "Could not find user '%s' in /etc/passwd\n", user);
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+ return 2;
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+ }
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+ }
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+
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+ fp = fopen("/etc/samba/smbpasswd", "r+");
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+ if(!fp) {
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+ fprintf(stderr, "Failed to open /etc/samba/smbpasswd");
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+ return 3;
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+ }
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+
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+ found = find_passwd_line(fp, user, NULL);
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+ if (!add && !found) {
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+ fprintf(stderr, "Could not find user '%s' in /etc/samba/smbpasswd\n", user);
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+ return 3;
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+ }
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+
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+ if (delete) {
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+ smbpasswd_delete_user(fp);
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+ goto out;
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+ }
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+
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+ pw1 = get_pass("New SMB password:", get_stdin);
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+ if (!pw1)
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+ pw1 = strdup("");
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+
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+ pw2 = get_pass("Retype SMB password:", get_stdin);
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+ if (!pw2)
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+ pw2 = strdup("");
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+
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+ if (strcmp(pw1, pw2) != 0) {
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+ fprintf(stderr, "Mismatch - password unchanged.\n");
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+ goto out_free;
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+ }
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+
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+ if (found)
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+ fseek(fp, -strlen(buf), SEEK_CUR);
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+ smbpasswd_write_user(fp, user, uid, pw2);
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+
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+out_free:
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+ free(pw1);
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+ free(pw2);
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+out:
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+ fclose(fp);
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+ TALLOC_FREE(frame);
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+
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+ return 0;
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+}
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