bool pdb_set_plaintext_passwd(struct samu *sampass, const char *plaintext)
{
uchar new_lanman_p16[LM_HASH_LEN];
uchar new_nt_p16[NT_HASH_LEN];
uchar *pwhistory;
uint32 pwHistLen;
uint32 current_history_len;
if (!plaintext)
return False;
/* Calculate the MD4 hash (NT compatible) of the password */
E_md4hash(plaintext, new_nt_p16);
if (!pdb_set_nt_passwd (sampass, new_nt_p16, PDB_CHANGED))
return False;
if (!E_deshash(plaintext, new_lanman_p16)) {
/* E_deshash returns false for 'long' passwords (> 14
DOS chars). This allows us to match Win2k, which
does not store a LM hash for these passwords (which
would reduce the effective password length to 14 */
if (!pdb_set_lanman_passwd (sampass, NULL, PDB_CHANGED))
return False;
} else {
if (!pdb_set_lanman_passwd (sampass, new_lanman_p16, PDB_CHANGED))
return False;
}
if (!pdb_set_plaintext_pw_only (sampass, plaintext, PDB_CHANGED))
return False;
if (!pdb_set_pass_last_set_time (sampass, time(NULL), PDB_CHANGED))
return False;
if ((pdb_get_acct_ctrl(sampass) & ACB_NORMAL) == 0) {
/*
* No password history for non-user accounts
*/
return true;
}
pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY, &pwHistLen);
if (pwHistLen == 0) {
/* Set the history length to zero. */
pdb_set_pw_history(sampass, NULL, 0, PDB_CHANGED);
return true;
}
/*
* We need to make sure we don't have a race condition here -
* the account policy history length can change between when
* the pw_history was first loaded into the struct samu struct
* and now.... JRA.
*/
pwhistory = (uchar *)pdb_get_pw_history(sampass, ¤t_history_len);
if ((current_history_len != 0) && (pwhistory == NULL)) {
DEBUG(1, ("pdb_set_plaintext_passwd: pwhistory == NULL!\n"));
return false;
}
if (current_history_len < pwHistLen) {
/*
* Ensure we have space for the needed history. This
* also takes care of an account which did not have
* any history at all so far, i.e. pwhistory==NULL
*/
uchar *new_history = talloc_zero_array(
sampass, uchar,
pwHistLen*PW_HISTORY_ENTRY_LEN);
if (!new_history) {
return False;
}
memcpy(new_history, pwhistory,
current_history_len*PW_HISTORY_ENTRY_LEN);
pwhistory = new_history;
}
/*
* Make room for the new password in the history list.
*/
if (pwHistLen > 1) {
memmove(&pwhistory[PW_HISTORY_ENTRY_LEN], pwhistory,
(pwHistLen-1)*PW_HISTORY_ENTRY_LEN );
}
/*
* Fill the salt area with 0-s: this indicates that
* a plain nt hash is stored in the has area.
* The old format was to store a 16 byte salt and
* then an md5hash of the nt_hash concatenated with
* the salt.
*/
memset(pwhistory, 0, PW_HISTORY_SALT_LEN);
/*
* Store the plain nt hash in the second 16 bytes.
* The old format was to store the md5 hash of
* the salt+newpw.
*/
memcpy(&pwhistory[PW_HISTORY_SALT_LEN], new_nt_p16, SALTED_MD5_HASH_LEN);
pdb_set_pw_history(sampass, pwhistory, pwHistLen, PDB_CHANGED);
return True;
}
bool pdb_set_plaintext_passwd(struct samu *sampass, const char *plaintext)
{
uchar new_lanman_p16[LM_HASH_LEN];
uchar new_nt_p16[NT_HASH_LEN];
if (!plaintext)
return False;
/* Calculate the MD4 hash (NT compatible) of the password */
E_md4hash(plaintext, new_nt_p16);
if (!pdb_set_nt_passwd (sampass, new_nt_p16, PDB_CHANGED))
return False;
if (!E_deshash(plaintext, new_lanman_p16)) {
/* E_deshash returns false for 'long' passwords (> 14
DOS chars). This allows us to match Win2k, which
does not store a LM hash for these passwords (which
would reduce the effective password length to 14 */
if (!pdb_set_lanman_passwd (sampass, NULL, PDB_CHANGED))
return False;
} else {
if (!pdb_set_lanman_passwd (sampass, new_lanman_p16, PDB_CHANGED))
return False;
}
if (!pdb_set_plaintext_pw_only (sampass, plaintext, PDB_CHANGED))
return False;
if (!pdb_set_pass_last_set_time (sampass, time(NULL), PDB_CHANGED))
return False;
/* Store the password history. */
if (pdb_get_acct_ctrl(sampass) & ACB_NORMAL) {
uchar *pwhistory;
uint32 pwHistLen;
pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
if (pwHistLen != 0){
uint32 current_history_len;
/* We need to make sure we don't have a race condition here - the
account policy history length can change between when the pw_history
was first loaded into the struct samu struct and now.... JRA. */
pwhistory = (uchar *)pdb_get_pw_history(sampass, ¤t_history_len);
if (current_history_len != pwHistLen) {
/* After closing and reopening struct samu the history
values will sync up. We can't do this here. */
/* current_history_len > pwHistLen is not a problem - we
have more history than we need. */
if (current_history_len < pwHistLen) {
/* Ensure we have space for the needed history. */
uchar *new_history = (uchar *)TALLOC(sampass,
pwHistLen*PW_HISTORY_ENTRY_LEN);
if (!new_history) {
return False;
}
/* And copy it into the new buffer. */
if (current_history_len) {
memcpy(new_history, pwhistory,
current_history_len*PW_HISTORY_ENTRY_LEN);
}
/* Clearing out any extra space. */
memset(&new_history[current_history_len*PW_HISTORY_ENTRY_LEN],
'\0', (pwHistLen-current_history_len)*PW_HISTORY_ENTRY_LEN);
/* Finally replace it. */
pwhistory = new_history;
}
}
if (pwhistory && pwHistLen){
/* Make room for the new password in the history list. */
if (pwHistLen > 1) {
memmove(&pwhistory[PW_HISTORY_ENTRY_LEN],
pwhistory, (pwHistLen -1)*PW_HISTORY_ENTRY_LEN );
}
/* Create the new salt as the first part of the history entry. */
generate_random_buffer(pwhistory, PW_HISTORY_SALT_LEN);
/* Generate the md5 hash of the salt+new password as the second
part of the history entry. */
E_md5hash(pwhistory, new_nt_p16, &pwhistory[PW_HISTORY_SALT_LEN]);
pdb_set_pw_history(sampass, pwhistory, pwHistLen, PDB_CHANGED);
} else {
DEBUG (10,("pdb_get_set.c: pdb_set_plaintext_passwd: pwhistory was NULL!\n"));
}
} else {
/* Set the history length to zero. */
pdb_set_pw_history(sampass, NULL, 0, PDB_CHANGED);
}
}
return True;
}
