summaryrefslogtreecommitdiffstats
path: root/source/smbd/chgpasswd.c
diff options
context:
space:
mode:
Diffstat (limited to 'source/smbd/chgpasswd.c')
-rw-r--r--source/smbd/chgpasswd.c268
1 files changed, 146 insertions, 122 deletions
diff --git a/source/smbd/chgpasswd.c b/source/smbd/chgpasswd.c
index 9e593b022ef..33ecfc5c2ff 100644
--- a/source/smbd/chgpasswd.c
+++ b/source/smbd/chgpasswd.c
@@ -1,5 +1,6 @@
/*
- Unix SMB/CIFS implementation.
+ Unix SMB/Netbios implementation.
+ Version 1.9.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
@@ -50,12 +51,6 @@
extern struct passdb_ops pdb_ops;
-static BOOL check_oem_password(const char *user,
- uchar * lmdata, const uchar * lmhash,
- const uchar * ntdata, const uchar * nthash,
- SAM_ACCOUNT **hnd, char *new_passwd,
- int new_passwd_size);
-
#if ALLOW_CHANGE_PASSWORD
static int findpty(char **slave)
@@ -117,18 +112,20 @@ static int findpty(char **slave)
return (-1);
}
-static int dochild(int master, const char *slavedev, const struct passwd *pass,
- const char *passwordprogram, BOOL as_root)
+static int dochild(int master, char *slavedev, char *name,
+ char *passwordprogram, BOOL as_root)
{
int slave;
struct termios stermios;
+ struct passwd *pass = Get_Pwnam(name, True);
gid_t gid;
uid_t uid;
if (pass == NULL)
{
DEBUG(0,
- ("dochild: user doesn't exist in the UNIX password database.\n"));
+ ("dochild: user name %s doesn't exist in the UNIX password database.\n",
+ name));
return False;
}
@@ -167,17 +164,17 @@ static int dochild(int master, const char *slavedev, const struct passwd *pass,
/* Make slave stdin/out/err of child. */
- if (sys_dup2(slave, STDIN_FILENO) != STDIN_FILENO)
+ if (dup2(slave, STDIN_FILENO) != STDIN_FILENO)
{
DEBUG(3, ("Could not re-direct stdin\n"));
return (False);
}
- if (sys_dup2(slave, STDOUT_FILENO) != STDOUT_FILENO)
+ if (dup2(slave, STDOUT_FILENO) != STDOUT_FILENO)
{
DEBUG(3, ("Could not re-direct stdout\n"));
return (False);
}
- if (sys_dup2(slave, STDERR_FILENO) != STDERR_FILENO)
+ if (dup2(slave, STDERR_FILENO) != STDERR_FILENO)
{
DEBUG(3, ("Could not re-direct stderr\n"));
return (False);
@@ -199,15 +196,13 @@ static int dochild(int master, const char *slavedev, const struct passwd *pass,
#ifdef ONLCR
stermios.c_oflag &= ~(ONLCR);
#endif
- if (tcsetattr(0, TCSANOW, &stermios) < 0)
- {
+ if (tcsetattr(0, TCSANOW, &stermios) < 0) {
DEBUG(3, ("could not set attributes of pty\n"));
return (False);
}
/* make us completely into the right uid */
- if (!as_root)
- {
+ if (!as_root) {
become_user_permanently(uid, gid);
}
@@ -323,7 +318,7 @@ static int talktochild(int master, char *seq)
return (count > 0);
}
-static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
+static BOOL chat_with_program(char *passwordprogram, char *name,
char *chatsequence, BOOL as_root)
{
char *slavedev;
@@ -332,19 +327,12 @@ static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
int wstat;
BOOL chstat = False;
- if (pass == NULL)
- {
- DEBUG(0,
- ("chat_with_program: user doesn't exist in the UNIX password database.\n"));
- return False;
- }
-
/* allocate a pseudo-terminal device */
if ((master = findpty(&slavedev)) < 0)
{
DEBUG(3,
("Cannot Allocate pty for password change: %s\n",
- pass->pw_name));
+ name));
return (False);
}
@@ -359,7 +347,7 @@ static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
{
DEBUG(3,
("Cannot fork() child for password change: %s\n",
- pass->pw_name));
+ name));
close(master);
CatchChild();
return (False);
@@ -372,7 +360,7 @@ static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
{
DEBUG(3,
("Child failed to change password: %s\n",
- pass->pw_name));
+ name));
kill(pid, SIGKILL); /* be sure to end this process */
}
@@ -438,10 +426,10 @@ static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
become_root();
DEBUG(3,
- ("Dochild for user %s (uid=%d,gid=%d)\n", pass->pw_name,
+ ("Dochild for user %s (uid=%d,gid=%d)\n", name,
(int)getuid(), (int)getgid()));
chstat =
- dochild(master, slavedev, pass, passwordprogram,
+ dochild(master, slavedev, name, passwordprogram,
as_root);
if (as_root)
@@ -460,24 +448,19 @@ static BOOL chat_with_program(char *passwordprogram, struct passwd *pass,
if (chstat)
DEBUG(3,
("Password change %ssuccessful for user %s\n",
- (chstat ? "" : "un"), pass->pw_name));
+ (chstat ? "" : "un"), name));
return (chstat);
}
-BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL as_root)
+BOOL chgpasswd(char *name, char *oldpass, char *newpass, BOOL as_root)
{
pstring passwordprogram;
pstring chatsequence;
size_t i;
size_t len;
- struct passwd *pass;
-
- if (!name) {
- DEBUG(1, ("NULL username specfied to chgpasswd()!\n"));
- }
-
+ strlower(name);
DEBUG(3, ("Password change for user: %s\n", name));
#if DEBUG_PASSWORD
@@ -522,8 +505,6 @@ BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL
return False;
}
}
-
- pass = Get_Pwnam(name);
#ifdef WITH_PAM
if (lp_pam_password_change()) {
@@ -532,12 +513,8 @@ BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL
if (as_root)
become_root();
- if (pass) {
- ret = smb_pam_passchange(pass->pw_name, oldpass, newpass);
- } else {
- ret = smb_pam_passchange(name, oldpass, newpass);
- }
-
+ ret = smb_pam_passchange(name, oldpass, newpass);
+
if (as_root)
unbecome_root();
@@ -545,16 +522,6 @@ BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL
}
#endif
- /* A non-PAM password change just doen't make sense without a valid local user */
-
- if (pass == NULL)
- {
- DEBUG(0,
- ("chgpasswd: user %s doesn't exist in the UNIX password database.\n",
- name));
- return False;
- }
-
pstrcpy(passwordprogram, lp_passwd_program());
pstrcpy(chatsequence, lp_passwd_chat());
@@ -586,12 +553,12 @@ the string %%u, and the given string %s does not.\n", passwordprogram ));
all_string_sub(chatsequence, "%o", oldpass, sizeof(pstring));
all_string_sub(chatsequence, "%n", newpass, sizeof(pstring));
return (chat_with_program
- (passwordprogram, pass, chatsequence, as_root));
+ (passwordprogram, name, chatsequence, as_root));
}
#else /* ALLOW_CHANGE_PASSWORD */
-BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL as_root)
+BOOL chgpasswd(char *name, char *oldpass, char *newpass, BOOL as_root)
{
DEBUG(0, ("Password changing not compiled in (user=%s)\n", name));
return (False);
@@ -605,11 +572,12 @@ BOOL chgpasswd(const char *name, const char *oldpass, const char *newpass, BOOL
BOOL check_lanman_password(char *user, uchar * pass1,
uchar * pass2, SAM_ACCOUNT **hnd)
{
+ static uchar null_pw[16];
uchar unenc_new_pw[16];
uchar unenc_old_pw[16];
SAM_ACCOUNT *sampass = NULL;
uint16 acct_ctrl;
- const uint8 *lanman_pw;
+ uint8 *lanman_pw;
BOOL ret;
become_root();
@@ -618,7 +586,7 @@ BOOL check_lanman_password(char *user, uchar * pass1,
if (ret == False) {
DEBUG(0,("check_lanman_password: getsampwnam returned NULL\n"));
- pdb_free_sam(&sampass);
+ pdb_free_sam(sampass);
return False;
}
@@ -627,21 +595,24 @@ BOOL check_lanman_password(char *user, uchar * pass1,
if (acct_ctrl & ACB_DISABLED) {
DEBUG(0,("check_lanman_password: account %s disabled.\n", user));
- pdb_free_sam(&sampass);
+ pdb_free_sam(sampass);
return False;
}
- if (lanman_pw == NULL) {
- if (acct_ctrl & ACB_PWNOTREQ) {
- /* this saves the pointer for the caller */
- *hnd = sampass;
- return True;
- } else {
- DEBUG(0, ("check_lanman_password: no lanman password !\n"));
- pdb_free_sam(&sampass);
+ if ((lanman_pw == NULL) && (acct_ctrl & ACB_PWNOTREQ)) {
+ uchar no_pw[14];
+ memset(no_pw, '\0', 14);
+ E_P16(no_pw, null_pw);
+ if (!pdb_set_lanman_passwd(sampass, null_pw)) {
+ pdb_free_sam(sampass);
return False;
}
}
+ else if (lanman_pw == NULL) {
+ DEBUG(0, ("check_lanman_password: no lanman password !\n"));
+ pdb_free_sam(sampass);
+ return False;
+ }
/* Get the new lanman hash. */
D_P16(lanman_pw, pass2, unenc_new_pw);
@@ -652,12 +623,13 @@ BOOL check_lanman_password(char *user, uchar * pass1,
/* Check that the two old passwords match. */
if (memcmp(lanman_pw, unenc_old_pw, 16)) {
DEBUG(0,("check_lanman_password: old password doesn't match.\n"));
- pdb_free_sam(&sampass);
+ pdb_free_sam(sampass);
return False;
}
/* this saves the pointer for the caller */
*hnd = sampass;
+
return True;
}
@@ -674,7 +646,7 @@ BOOL change_lanman_password(SAM_ACCOUNT *sampass, uchar * pass1,
uchar unenc_new_pw[16];
BOOL ret;
uint16 acct_ctrl;
- const uint8 *pwd;
+ uint8 *pwd;
if (sampass == NULL) {
DEBUG(0,("change_lanman_password: no smb password entry.\n"));
@@ -690,40 +662,28 @@ BOOL change_lanman_password(SAM_ACCOUNT *sampass, uchar * pass1,
return False;
}
- if (pwd == NULL) {
- if (acct_ctrl & ACB_PWNOTREQ) {
- uchar no_pw[14];
- memset(no_pw, '\0', 14);
- E_P16(no_pw, null_pw);
-
- /* Get the new lanman hash. */
- D_P16(null_pw, pass2, unenc_new_pw);
- } else {
- DEBUG(0,("change_lanman_password: no lanman password !\n"));
+ if ((pwd == NULL) && (acct_ctrl & ACB_PWNOTREQ)) {
+ uchar no_pw[14];
+ memset(no_pw, '\0', 14);
+ E_P16(no_pw, null_pw);
+ if (!pdb_set_lanman_passwd(sampass, null_pw))
return False;
- }
- } else {
- /* Get the new lanman hash. */
- D_P16(pwd, pass2, unenc_new_pw);
}
-
- if (!pdb_set_lanman_passwd(sampass, unenc_new_pw)) {
+ else if (pwd == NULL) {
+ DEBUG(0,("change_lanman_password: no lanman password !\n"));
return False;
}
- if (!pdb_set_nt_passwd (sampass, NULL)) {
- return False; /* We lose the NT hash. Sorry. */
- }
+ /* Get the new lanman hash. */
+ D_P16(pwd, pass2, unenc_new_pw);
+
+ if (!pdb_set_lanman_passwd(sampass, unenc_new_pw))
+ return False;
+ pdb_set_nt_passwd (sampass, NULL); /* We lose the NT hash. Sorry. */
- if (!pdb_set_pass_changed_now (sampass)) {
- pdb_free_sam(&sampass);
- /* Not quite sure what this one qualifies as, but this will do */
- return False;
- }
-
/* Now flush the sam_passwd struct to persistent storage */
become_root();
- ret = pdb_update_sam_account (sampass);
+ ret = pdb_update_sam_account (sampass, False);
unbecome_root();
return ret;
@@ -737,7 +697,6 @@ BOOL pass_oem_change(char *user,
uchar * ntdata, uchar * nthash)
{
fstring new_passwd;
- const char *unix_user;
SAM_ACCOUNT *sampass = NULL;
BOOL ret = check_oem_password(user, lmdata, lmhash, ntdata, nthash,
&sampass, new_passwd, sizeof(new_passwd));
@@ -751,17 +710,15 @@ BOOL pass_oem_change(char *user,
* available. JRA.
*/
- unix_user = pdb_get_username(sampass);
-
- if ((ret) && (unix_user) && (*unix_user) && lp_unix_password_sync())
- ret = chgpasswd(unix_user, "", new_passwd, True);
+ if (ret && lp_unix_password_sync())
+ ret = chgpasswd(user, "", new_passwd, True);
if (ret)
- ret = change_oem_password(sampass, new_passwd);
+ ret = change_oem_password(sampass, new_passwd, False);
memset(new_passwd, 0, sizeof(new_passwd));
- pdb_free_sam(&sampass);
+ pdb_free_sam(sampass);
return ret;
}
@@ -773,16 +730,16 @@ BOOL pass_oem_change(char *user,
but does use the lm OEM password to check the nt hashed-hash.
************************************************************/
-static BOOL check_oem_password(const char *user,
- uchar * lmdata, const uchar * lmhash,
- const uchar * ntdata, const uchar * nthash,
- SAM_ACCOUNT **hnd, char *new_passwd,
- int new_passwd_size)
+BOOL check_oem_password(char *user,
+ uchar * lmdata, uchar * lmhash,
+ uchar * ntdata, uchar * nthash,
+ SAM_ACCOUNT **hnd, char *new_passwd,
+ int new_passwd_size)
{
static uchar null_pw[16];
static uchar null_ntpw[16];
SAM_ACCOUNT *sampass = NULL;
- const uint8 *lanman_pw, *nt_pw;
+ uint8 *lanman_pw, *nt_pw;
uint16 acct_ctrl;
int new_pw_len;
uchar new_ntp16[16];
@@ -802,6 +759,7 @@ static BOOL check_oem_password(const char *user,
if (ret == False) {
DEBUG(0, ("check_oem_password: getsmbpwnam returned NULL\n"));
+ pdb_free_sam(sampass);
return False;
}
@@ -825,23 +783,29 @@ static BOOL check_oem_password(const char *user,
/* check for null passwords */
if (lanman_pw == NULL) {
- if (!(acct_ctrl & ACB_PWNOTREQ)) {
+ if (acct_ctrl & ACB_PWNOTREQ) {
+ if (!pdb_set_lanman_passwd(sampass, null_pw)) {
+ return False;
+ }
+ } else {
DEBUG(0,("check_oem_password: no lanman password !\n"));
return False;
}
}
-
+
if (pdb_get_nt_passwd(sampass) == NULL && nt_pass_set) {
- if (!(acct_ctrl & ACB_PWNOTREQ)) {
+ if (acct_ctrl & ACB_PWNOTREQ)
+ pdb_set_nt_passwd(sampass, null_pw);
+ else {
DEBUG(0,("check_oem_password: no ntlm password !\n"));
return False;
}
}
-
+
/*
* Call the hash function to get the new password.
*/
- SamOEMhash( lmdata, lanman_pw, 516);
+ SamOEMhash((uchar *) lmdata, (uchar *)lanman_pw, 516);
/*
* The length of the new password is in the last 4 bytes of
@@ -858,9 +822,11 @@ static BOOL check_oem_password(const char *user,
/*
* nt passwords are in unicode
*/
- pull_ucs2(NULL, new_passwd,
- (const smb_ucs2_t *)&lmdata[512 - new_pw_len],
- new_passwd_size, new_pw_len, 0);
+ int uni_pw_len = new_pw_len;
+ char *pw;
+ new_pw_len /= 2;
+ pw = dos_unistrn2((uint16 *)(&lmdata[512 - uni_pw_len]), new_pw_len);
+ memcpy(new_passwd, pw, new_pw_len + 1);
} else {
memcpy(new_passwd, &lmdata[512 - new_pw_len], new_pw_len);
new_passwd[new_pw_len] = 0;
@@ -921,23 +887,81 @@ static BOOL check_oem_password(const char *user,
/***********************************************************
Code to change the oem password. Changes both the lanman
and NT hashes.
+ override = False, normal
+ override = True, override XXXXXXXXXX'd password
************************************************************/
-BOOL change_oem_password(SAM_ACCOUNT *hnd, char *new_passwd)
+BOOL change_oem_password(SAM_ACCOUNT *hnd, char *new_passwd,
+ BOOL override)
{
BOOL ret;
+ uchar new_nt_p16[16];
+ uchar new_p16[16];
+
+ nt_lm_owf_gen(new_passwd, new_nt_p16, new_p16);
- if (!pdb_set_plaintext_passwd (hnd, new_passwd)) {
+ if (!pdb_set_lanman_passwd (hnd, new_p16))
+ return False;
+ if (!pdb_set_nt_passwd(hnd, new_nt_p16))
return False;
- }
/* Now write it into the file. */
become_root();
- ret = pdb_update_sam_account (hnd);
+ ret = pdb_update_sam_account (hnd, override);
unbecome_root();
+ memset(new_passwd, '\0', strlen(new_passwd));
+
return ret;
}
+/***********************************************************
+ Code to check a plaintext password against smbpasswd entries.
+***********************************************************/
+BOOL check_plaintext_password(char *user, char *old_passwd,
+ int old_passwd_size, SAM_ACCOUNT **hnd)
+{
+ SAM_ACCOUNT *sampass = NULL;
+ uchar old_pw[16], old_ntpw[16];
+ BOOL ret;
+
+ pdb_init_sam(&sampass);
+ become_root();
+ ret = pdb_getsampwnam(sampass, user);
+ unbecome_root();
+
+ *hnd = sampass;
+
+ if (ret == False)
+ {
+ DEBUG(0,("check_plaintext_password: getsmbpwnam returned NULL\n"));
+ return False;
+ }
+
+ if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED)
+ {
+ DEBUG(0,("check_plaintext_password: account %s disabled.\n", user));
+ return (False);
+ }
+
+ nt_lm_owf_gen(old_passwd, old_ntpw, old_pw);
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("check_plaintext_password: nt_passwd \n"));
+ dump_data(100, pdb_get_nt_passwd(sampass), 16);
+ DEBUG(100, ("check_plaintext_password: old_ntpw \n"));
+ dump_data(100, old_ntpw, 16);
+ DEBUG(100, ("check_plaintext_password: lanman_passwd \n"));
+ dump_data(100, pdb_get_lanman_passwd(sampass), 16);
+ DEBUG(100, ("check_plaintext_password: old_pw\n"));
+ dump_data(100, old_pw, 16);
+#endif
+
+ if (memcmp(pdb_get_nt_passwd(sampass), old_ntpw, 16)
+ && memcmp(pdb_get_lanman_passwd(sampass), old_pw, 16))
+ return (False);
+ else
+ return (True);
+}
generated by cgit (git 2.34.1) at 2024-06-20 02:14:46 +0000