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authorAndrew Tridgell <tridge@samba.org>2003-08-13 01:53:07 +0000
committerAndrew Tridgell <tridge@samba.org>2003-08-13 01:53:07 +0000
commitef2e26c91b80556af033d3335e55f5dfa6fff31d (patch)
treefaa21bfd7e7b5247250b47c7891dc1a5ebee6be9 /source4/passdb/passdb.c
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first public release of samba4 code
(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
Diffstat (limited to 'source4/passdb/passdb.c')
-rw-r--r--source4/passdb/passdb.c1167
1 files changed, 1167 insertions, 0 deletions
diff --git a/source4/passdb/passdb.c b/source4/passdb/passdb.c
new file mode 100644
index 0000000000..39e2d4cb22
--- /dev/null
+++ b/source4/passdb/passdb.c
@@ -0,0 +1,1167 @@
+/*
+ Unix SMB/CIFS implementation.
+ Password and authentication handling
+ Copyright (C) Jeremy Allison 1996-2001
+ Copyright (C) Luke Kenneth Casson Leighton 1996-1998
+ Copyright (C) Gerald (Jerry) Carter 2000-2001
+ Copyright (C) Andrew Bartlett 2001-2002
+
+ 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"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_PASSDB
+
+/*
+ * This is set on startup - it defines the SID for this
+ * machine, and therefore the SAM database for which it is
+ * responsible.
+ */
+
+/************************************************************
+ Fill the SAM_ACCOUNT with default values.
+ ***********************************************************/
+
+static void pdb_fill_default_sam(SAM_ACCOUNT *user)
+{
+ ZERO_STRUCT(user->private); /* Don't touch the talloc context */
+
+ /* no initial methods */
+ user->methods = NULL;
+
+ /* Don't change these timestamp settings without a good reason.
+ They are important for NT member server compatibility. */
+
+ user->private.uid = user->private.gid = -1;
+
+ user->private.logon_time = (time_t)0;
+ user->private.pass_last_set_time = (time_t)0;
+ user->private.pass_can_change_time = (time_t)0;
+ user->private.logoff_time =
+ user->private.kickoff_time =
+ user->private.pass_must_change_time = get_time_t_max();
+ user->private.unknown_3 = 0x00ffffff; /* don't know */
+ user->private.logon_divs = 168; /* hours per week */
+ user->private.hours_len = 21; /* 21 times 8 bits = 168 */
+ memset(user->private.hours, 0xff, user->private.hours_len); /* available at all hours */
+ user->private.unknown_5 = 0x00000000; /* don't know */
+ user->private.unknown_6 = 0x000004ec; /* don't know */
+
+ /* Some parts of samba strlen their pdb_get...() returns,
+ so this keeps the interface unchanged for now. */
+
+ user->private.username = "";
+ user->private.domain = "";
+ user->private.nt_username = "";
+ user->private.full_name = "";
+ user->private.home_dir = "";
+ user->private.logon_script = "";
+ user->private.profile_path = "";
+ user->private.acct_desc = "";
+ user->private.workstations = "";
+ user->private.unknown_str = "";
+ user->private.munged_dial = "";
+
+ user->private.plaintext_pw = NULL;
+
+}
+
+static void destroy_pdb_talloc(SAM_ACCOUNT **user)
+{
+ if (*user) {
+ data_blob_clear_free(&((*user)->private.lm_pw));
+ data_blob_clear_free(&((*user)->private.nt_pw));
+
+ if((*user)->private.plaintext_pw!=NULL)
+ memset((*user)->private.plaintext_pw,'\0',strlen((*user)->private.plaintext_pw));
+ talloc_destroy((*user)->mem_ctx);
+ *user = NULL;
+ }
+}
+
+
+/**********************************************************************
+ Alloc memory and initialises a struct sam_passwd on supplied mem_ctx.
+***********************************************************************/
+
+NTSTATUS pdb_init_sam_talloc(TALLOC_CTX *mem_ctx, SAM_ACCOUNT **user)
+{
+ if (*user != NULL) {
+ DEBUG(0,("pdb_init_sam_talloc: SAM_ACCOUNT was non NULL\n"));
+#if 0
+ smb_panic("non-NULL pointer passed to pdb_init_sam\n");
+#endif
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if (!mem_ctx) {
+ DEBUG(0,("pdb_init_sam_talloc: mem_ctx was NULL!\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ *user=(SAM_ACCOUNT *)talloc(mem_ctx, sizeof(SAM_ACCOUNT));
+
+ if (*user==NULL) {
+ DEBUG(0,("pdb_init_sam_talloc: error while allocating memory\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ (*user)->mem_ctx = mem_ctx;
+
+ (*user)->free_fn = NULL;
+
+ pdb_fill_default_sam(*user);
+
+ return NT_STATUS_OK;
+}
+
+
+/*************************************************************
+ Alloc memory and initialises a struct sam_passwd.
+ ************************************************************/
+
+NTSTATUS pdb_init_sam(SAM_ACCOUNT **user)
+{
+ TALLOC_CTX *mem_ctx;
+ NTSTATUS nt_status;
+
+ mem_ctx = talloc_init("passdb internal SAM_ACCOUNT allocation");
+
+ if (!mem_ctx) {
+ DEBUG(0,("pdb_init_sam: error while doing talloc_init()\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_talloc(mem_ctx, user))) {
+ talloc_destroy(mem_ctx);
+ return nt_status;
+ }
+
+ (*user)->free_fn = destroy_pdb_talloc;
+
+ return NT_STATUS_OK;
+}
+
+
+/*************************************************************
+ Initialises a struct sam_passwd with sane values.
+ ************************************************************/
+
+NTSTATUS pdb_fill_sam_pw(SAM_ACCOUNT *sam_account, const struct passwd *pwd)
+{
+ GROUP_MAP map;
+
+ const char *guest_account = lp_guestaccount();
+ if (!(guest_account && *guest_account)) {
+ DEBUG(1, ("NULL guest account!?!?\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if (!pwd) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ pdb_fill_default_sam(sam_account);
+
+ pdb_set_username(sam_account, pwd->pw_name, PDB_SET);
+ pdb_set_fullname(sam_account, pwd->pw_gecos, PDB_SET);
+
+ pdb_set_unix_homedir(sam_account, pwd->pw_dir, PDB_SET);
+
+ pdb_set_domain (sam_account, lp_workgroup(), PDB_DEFAULT);
+
+ pdb_set_uid(sam_account, pwd->pw_uid, PDB_SET);
+ pdb_set_gid(sam_account, pwd->pw_gid, PDB_SET);
+
+ /* When we get a proper uid -> SID and SID -> uid allocation
+ mechinism, we should call it here.
+
+ We can't just set this to 0 or allow it only to be filled
+ in when added to the backend, becouse the user's SID
+ may already be in security descriptors etc.
+
+ -- abartlet 11-May-02
+ */
+
+
+ /* Ensure this *must* be set right */
+ if (strcmp(pwd->pw_name, guest_account) == 0) {
+ if (!pdb_set_user_sid_from_rid(sam_account, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ if (!pdb_set_group_sid_from_rid(sam_account, DOMAIN_GROUP_RID_GUESTS, PDB_DEFAULT)) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ } else {
+
+ if (!pdb_set_user_sid_from_rid(sam_account,
+ fallback_pdb_uid_to_user_rid(pwd->pw_uid), PDB_SET)) {
+ DEBUG(0,("Can't set User SID from RID!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* call the mapping code here */
+ if(pdb_getgrgid(&map, pwd->pw_gid, MAPPING_WITHOUT_PRIV)) {
+ if (!pdb_set_group_sid(sam_account,&map.sid, PDB_SET)){
+ DEBUG(0,("Can't set Group SID!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+ else {
+ if (!pdb_set_group_sid_from_rid(sam_account,pdb_gid_to_group_rid(pwd->pw_gid), PDB_SET)) {
+ DEBUG(0,("Can't set Group SID\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+ }
+
+ /* check if this is a user account or a machine account */
+ if (pwd->pw_name[strlen(pwd->pw_name)-1] != '$')
+ {
+ pdb_set_profile_path(sam_account,
+ talloc_sub_specified((sam_account)->mem_ctx,
+ lp_logon_path(),
+ pwd->pw_name, lp_netbios_name(),
+ pwd->pw_uid, pwd->pw_gid),
+ PDB_DEFAULT);
+
+ pdb_set_homedir(sam_account,
+ talloc_sub_specified((sam_account)->mem_ctx,
+ lp_logon_home(),
+ pwd->pw_name, lp_netbios_name(),
+ pwd->pw_uid, pwd->pw_gid),
+ PDB_DEFAULT);
+
+ pdb_set_dir_drive(sam_account,
+ talloc_sub_specified((sam_account)->mem_ctx,
+ lp_logon_drive(),
+ pwd->pw_name, lp_netbios_name(),
+ pwd->pw_uid, pwd->pw_gid),
+ PDB_DEFAULT);
+
+ pdb_set_logon_script(sam_account,
+ talloc_sub_specified((sam_account)->mem_ctx,
+ lp_logon_script(),
+ pwd->pw_name, lp_netbios_name(),
+ pwd->pw_uid, pwd->pw_gid),
+ PDB_DEFAULT);
+ if (!pdb_set_acct_ctrl(sam_account, ACB_NORMAL, PDB_DEFAULT)) {
+ DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n", pwd->pw_name));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ } else {
+ if (!pdb_set_acct_ctrl(sam_account, ACB_WSTRUST, PDB_DEFAULT)) {
+ DEBUG(1, ("Failed to set 'trusted workstation account' flags for user %s.\n", pwd->pw_name));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ }
+ return NT_STATUS_OK;
+}
+
+
+/*************************************************************
+ Initialises a struct sam_passwd with sane values.
+ ************************************************************/
+
+NTSTATUS pdb_init_sam_pw(SAM_ACCOUNT **new_sam_acct, const struct passwd *pwd)
+{
+ NTSTATUS nt_status;
+
+ if (!pwd) {
+ new_sam_acct = NULL;
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(new_sam_acct))) {
+ new_sam_acct = NULL;
+ return nt_status;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*new_sam_acct, pwd))) {
+ pdb_free_sam(new_sam_acct);
+ new_sam_acct = NULL;
+ return nt_status;
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/**
+ * Free the contets of the SAM_ACCOUNT, but not the structure.
+ *
+ * Also wipes the LM and NT hashes and plaintext password from
+ * memory.
+ *
+ * @param user SAM_ACCOUNT to free members of.
+ **/
+
+static void pdb_free_sam_contents(SAM_ACCOUNT *user)
+{
+
+ /* Kill off sensitive data. Free()ed by the
+ talloc mechinism */
+
+ data_blob_clear_free(&(user->private.lm_pw));
+ data_blob_clear_free(&(user->private.nt_pw));
+ if (user->private.plaintext_pw!=NULL)
+ memset(user->private.plaintext_pw,'\0',strlen(user->private.plaintext_pw));
+}
+
+
+/************************************************************
+ Reset the SAM_ACCOUNT and free the NT/LM hashes.
+ ***********************************************************/
+
+NTSTATUS pdb_reset_sam(SAM_ACCOUNT *user)
+{
+ if (user == NULL) {
+ DEBUG(0,("pdb_reset_sam: SAM_ACCOUNT was NULL\n"));
+#if 0
+ smb_panic("NULL pointer passed to pdb_free_sam\n");
+#endif
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ pdb_free_sam_contents(user);
+
+ pdb_fill_default_sam(user);
+
+ return NT_STATUS_OK;
+}
+
+
+/************************************************************
+ Free the SAM_ACCOUNT and the member pointers.
+ ***********************************************************/
+
+NTSTATUS pdb_free_sam(SAM_ACCOUNT **user)
+{
+ if (*user == NULL) {
+ DEBUG(0,("pdb_free_sam: SAM_ACCOUNT was NULL\n"));
+#if 0
+ smb_panic("NULL pointer passed to pdb_free_sam\n");
+#endif
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ pdb_free_sam_contents(*user);
+
+ if ((*user)->free_fn) {
+ (*user)->free_fn(user);
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/**********************************************************
+ Encode the account control bits into a string.
+ length = length of string to encode into (including terminating
+ null). length *MUST BE MORE THAN 2* !
+ **********************************************************/
+
+char *pdb_encode_acct_ctrl(uint16 acct_ctrl, size_t length)
+{
+ static fstring acct_str;
+ size_t i = 0;
+
+ acct_str[i++] = '[';
+
+ if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N';
+ if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D';
+ if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H';
+ if (acct_ctrl & ACB_TEMPDUP ) acct_str[i++] = 'T';
+ if (acct_ctrl & ACB_NORMAL ) acct_str[i++] = 'U';
+ if (acct_ctrl & ACB_MNS ) acct_str[i++] = 'M';
+ if (acct_ctrl & ACB_WSTRUST ) acct_str[i++] = 'W';
+ if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S';
+ if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L';
+ if (acct_ctrl & ACB_PWNOEXP ) acct_str[i++] = 'X';
+ if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I';
+
+ for ( ; i < length - 2 ; i++ )
+ acct_str[i] = ' ';
+
+ i = length - 2;
+ acct_str[i++] = ']';
+ acct_str[i++] = '\0';
+
+ return acct_str;
+}
+
+/**********************************************************
+ Decode the account control bits from a string.
+ **********************************************************/
+
+uint16 pdb_decode_acct_ctrl(const char *p)
+{
+ uint16 acct_ctrl = 0;
+ BOOL finished = False;
+
+ /*
+ * Check if the account type bits have been encoded after the
+ * NT password (in the form [NDHTUWSLXI]).
+ */
+
+ if (*p != '[')
+ return 0;
+
+ for (p++; *p && !finished; p++) {
+ switch (*p) {
+ case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
+ case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
+ case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
+ case 'T': { acct_ctrl |= ACB_TEMPDUP ; break; /* 'T'emp account. */ }
+ case 'U': { acct_ctrl |= ACB_NORMAL ; break; /* 'U'ser account (normal). */ }
+ case 'M': { acct_ctrl |= ACB_MNS ; break; /* 'M'NS logon user account. What is this ? */ }
+ case 'W': { acct_ctrl |= ACB_WSTRUST ; break; /* 'W'orkstation account. */ }
+ case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
+ case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
+ case 'X': { acct_ctrl |= ACB_PWNOEXP ; break; /* No 'X'piry on password */ }
+ case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
+ case ' ': { break; }
+ case ':':
+ case '\n':
+ case '\0':
+ case ']':
+ default: { finished = True; }
+ }
+ }
+
+ return acct_ctrl;
+}
+
+/*************************************************************
+ Routine to set 32 hex password characters from a 16 byte array.
+**************************************************************/
+
+void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl)
+{
+ if (pwd != NULL) {
+ int i;
+ for (i = 0; i < 16; i++)
+ slprintf(&p[i*2], 3, "%02X", pwd[i]);
+ } else {
+ if (acct_ctrl & ACB_PWNOTREQ)
+ safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
+ else
+ safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
+ }
+}
+
+/*************************************************************
+ Routine to get the 32 hex characters and turn them
+ into a 16 byte array.
+**************************************************************/
+
+BOOL pdb_gethexpwd(const char *p, unsigned char *pwd)
+{
+ int i;
+ unsigned char lonybble, hinybble;
+ const char *hexchars = "0123456789ABCDEF";
+ char *p1, *p2;
+
+ if (!p)
+ return (False);
+
+ for (i = 0; i < 32; i += 2) {
+ hinybble = toupper(p[i]);
+ lonybble = toupper(p[i + 1]);
+
+ p1 = strchr(hexchars, hinybble);
+ p2 = strchr(hexchars, lonybble);
+
+ if (!p1 || !p2)
+ return (False);
+
+ hinybble = PTR_DIFF(p1, hexchars);
+ lonybble = PTR_DIFF(p2, hexchars);
+
+ pwd[i / 2] = (hinybble << 4) | lonybble;
+ }
+ return (True);
+}
+
+/*******************************************************************
+ Converts NT user RID to a UNIX uid.
+ ********************************************************************/
+
+static int algorithmic_rid_base(void)
+{
+ static int rid_offset = 0;
+
+ if (rid_offset != 0)
+ return rid_offset;
+
+ rid_offset = lp_algorithmic_rid_base();
+
+ if (rid_offset < BASE_RID) {
+ /* Try to prevent admin foot-shooting, we can't put algorithmic
+ rids below 1000, that's the 'well known RIDs' on NT */
+ DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
+ rid_offset = BASE_RID;
+ }
+ if (rid_offset & 1) {
+ DEBUG(0, ("algorithmic rid base must be even\n"));
+ rid_offset += 1;
+ }
+ return rid_offset;
+}
+
+
+uid_t fallback_pdb_user_rid_to_uid(uint32 user_rid)
+{
+ int rid_offset = algorithmic_rid_base();
+ return (uid_t)(((user_rid & (~USER_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
+}
+
+
+/*******************************************************************
+ converts UNIX uid to an NT User RID.
+ ********************************************************************/
+
+uint32 fallback_pdb_uid_to_user_rid(uid_t uid)
+{
+ int rid_offset = algorithmic_rid_base();
+ return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
+}
+
+/*******************************************************************
+ Converts NT group RID to a UNIX gid.
+ ********************************************************************/
+
+gid_t pdb_group_rid_to_gid(uint32 group_rid)
+{
+ int rid_offset = algorithmic_rid_base();
+ return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
+}
+
+/*******************************************************************
+ converts NT Group RID to a UNIX uid.
+
+ warning: you must not call that function only
+ you must do a call to the group mapping first.
+ there is not anymore a direct link between the gid and the rid.
+ ********************************************************************/
+
+uint32 pdb_gid_to_group_rid(gid_t gid)
+{
+ int rid_offset = algorithmic_rid_base();
+ return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
+}
+
+/*******************************************************************
+ Decides if a RID is a well known RID.
+ ********************************************************************/
+
+static BOOL pdb_rid_is_well_known(uint32 rid)
+{
+ /* Not using rid_offset here, becouse this is the actual
+ NT fixed value (1000) */
+
+ return (rid < BASE_RID);
+}
+
+/*******************************************************************
+ Decides if a RID is a user or group RID.
+ ********************************************************************/
+
+BOOL pdb_rid_is_user(uint32 rid)
+{
+ /* lkcl i understand that NT attaches an enumeration to a RID
+ * such that it can be identified as either a user, group etc
+ * type. there are 5 such categories, and they are documented.
+ */
+ /* However, they are not in the RID, just somthing you can query
+ seperatly. Sorry luke :-) */
+
+ if(pdb_rid_is_well_known(rid)) {
+ /*
+ * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
+ * and DOMAIN_USER_RID_GUEST.
+ */
+ if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
+ return True;
+ } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
+ return True;
+ }
+ return False;
+}
+
+/*******************************************************************
+ Convert a rid into a name. Used in the lookup SID rpc.
+ ********************************************************************/
+
+BOOL local_lookup_sid(DOM_SID *sid, char *name, enum SID_NAME_USE *psid_name_use)
+{
+ uint32 rid;
+ SAM_ACCOUNT *sam_account = NULL;
+ GROUP_MAP map;
+ TALLOC_CTX *mem_ctx;
+
+ mem_ctx = talloc_init("local_lookup_sid");
+ if (!mem_ctx) {
+ DEBUG(0,("local_sid_to_gid: No memory\n"));
+ return False;
+ }
+ if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid)){
+ DEBUG(0,("local_sid_to_gid: sid_peek_check_rid return False! SID: %s\n",
+ sid_string_talloc(mem_ctx, &map.sid)));
+ return False;
+ }
+ talloc_destroy(mem_ctx);
+ *psid_name_use = SID_NAME_UNKNOWN;
+
+ DEBUG(5,("local_lookup_sid: looking up RID %u.\n", (unsigned int)rid));
+
+ if (rid == DOMAIN_USER_RID_ADMIN) {
+ const char **admin_list = lp_admin_users(-1);
+ *psid_name_use = SID_NAME_USER;
+ if (admin_list) {
+ const char *p = *admin_list;
+ if(!next_token(&p, name, NULL, sizeof(fstring)))
+ fstrcpy(name, "Administrator");
+ } else {
+ fstrcpy(name, "Administrator");
+ }
+ return True;
+ }
+
+ /*
+ * Don't try to convert the rid to a name if
+ * running in appliance mode
+ */
+
+ if (lp_hide_local_users())
+ return False;
+
+ if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
+ return False;
+ }
+
+ /* This now does the 'generic' mapping in pdb_unix */
+ /* 'guest' is also handled there */
+ if (pdb_getsampwsid(sam_account, sid)) {
+ fstrcpy(name, pdb_get_username(sam_account));
+ *psid_name_use = SID_NAME_USER;
+
+ pdb_free_sam(&sam_account);
+
+ return True;
+ }
+
+ pdb_free_sam(&sam_account);
+
+ if (pdb_getgrsid(&map, *sid, MAPPING_WITHOUT_PRIV)) {
+ if (map.gid!=(gid_t)-1) {
+ DEBUG(5,("local_lookup_sid: mapped group %s to gid %u\n", map.nt_name, (unsigned int)map.gid));
+ } else {
+ DEBUG(5,("local_lookup_sid: mapped group %s to no unix gid. Returning name.\n", map.nt_name));
+ }
+
+ fstrcpy(name, map.nt_name);
+ *psid_name_use = map.sid_name_use;
+ return True;
+ }
+
+ if (pdb_rid_is_user(rid)) {
+ uid_t uid;
+
+ DEBUG(5, ("assuming RID %u is a user\n", (unsigned)rid));
+
+ uid = fallback_pdb_user_rid_to_uid(rid);
+ slprintf(name, sizeof(fstring)-1, "unix_user.%u", (unsigned int)uid);
+
+ return False; /* Indicates that this user was 'not mapped' */
+ } else {
+ gid_t gid;
+ struct group *gr;
+
+ DEBUG(5, ("assuming RID %u is a group\n", (unsigned)rid));
+
+ gid = pdb_group_rid_to_gid(rid);
+ gr = getgrgid(gid);
+
+ *psid_name_use = SID_NAME_ALIAS;
+
+ DEBUG(5,("local_lookup_sid: looking up gid %u %s\n", (unsigned int)gid,
+ gr ? "succeeded" : "failed" ));
+
+ if(!gr) {
+ slprintf(name, sizeof(fstring)-1, "unix_group.%u", (unsigned int)gid);
+ return False; /* Indicates that this group was 'not mapped' */
+ }
+
+ fstrcpy( name, gr->gr_name);
+
+ DEBUG(5,("local_lookup_sid: found group %s for rid %u\n", name,
+ (unsigned int)rid ));
+ return True;
+ }
+}
+
+/*******************************************************************
+ Convert a name into a SID. Used in the lookup name rpc.
+ ********************************************************************/
+
+BOOL local_lookup_name(const char *c_user, DOM_SID *psid, enum SID_NAME_USE *psid_name_use)
+{
+ extern DOM_SID global_sid_World_Domain;
+ DOM_SID local_sid;
+ fstring user;
+ SAM_ACCOUNT *sam_account = NULL;
+ struct group *grp;
+ GROUP_MAP map;
+
+ *psid_name_use = SID_NAME_UNKNOWN;
+
+ /*
+ * user may be quoted a const string, and map_username and
+ * friends can modify it. Make a modifiable copy. JRA.
+ */
+
+ fstrcpy(user, c_user);
+
+ sid_copy(&local_sid, get_global_sam_sid());
+
+ /*
+ * Special case for MACHINE\Everyone. Map to the world_sid.
+ */
+
+ if(strequal(user, "Everyone")) {
+ sid_copy( psid, &global_sid_World_Domain);
+ sid_append_rid(psid, 0);
+ *psid_name_use = SID_NAME_ALIAS;
+ return True;
+ }
+
+ /*
+ * Don't lookup local unix users if running in appliance mode
+ */
+ if (lp_hide_local_users())
+ return False;
+
+ if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
+ return False;
+ }
+
+ if (pdb_getsampwnam(sam_account, user)) {
+ sid_copy(psid, pdb_get_user_sid(sam_account));
+ *psid_name_use = SID_NAME_USER;
+
+ pdb_free_sam(&sam_account);
+ return True;
+ }
+
+ pdb_free_sam(&sam_account);
+
+ /*
+ * Maybe it was a group ?
+ */
+
+ /* check if it's a mapped group */
+ if (pdb_getgrnam(&map, user, MAPPING_WITHOUT_PRIV)) {
+ /* yes it's a mapped group */
+ sid_copy(&local_sid, &map.sid);
+ *psid_name_use = map.sid_name_use;
+ } else {
+ /* it's not a mapped group */
+ grp = getgrnam(user);
+ if(!grp)
+ return False;
+
+ /*
+ *check if it's mapped, if it is reply it doesn't exist
+ *
+ * that's to prevent this case:
+ *
+ * unix group ug is mapped to nt group ng
+ * someone does a lookup on ug
+ * we must not reply as it doesn't "exist" anymore
+ * for NT. For NT only ng exists.
+ * JFM, 30/11/2001
+ */
+
+ if (pdb_getgrgid(&map, grp->gr_gid, MAPPING_WITHOUT_PRIV)){
+ return False;
+ }
+
+ sid_append_rid( &local_sid, pdb_gid_to_group_rid(grp->gr_gid));
+ *psid_name_use = SID_NAME_ALIAS;
+ }
+
+ sid_copy( psid, &local_sid);
+
+ return True;
+}
+
+/****************************************************************************
+ Convert a uid to SID - locally.
+****************************************************************************/
+
+DOM_SID *local_uid_to_sid(DOM_SID *psid, uid_t uid)
+{
+ struct passwd *pass;
+ SAM_ACCOUNT *sam_user = NULL;
+ fstring str; /* sid string buffer */
+
+ sid_copy(psid, get_global_sam_sid());
+
+ if((pass = getpwuid_alloc(uid))) {
+
+ if (NT_STATUS_IS_ERR(pdb_init_sam(&sam_user))) {
+ passwd_free(&pass);
+ return NULL;
+ }
+
+ if (pdb_getsampwnam(sam_user, pass->pw_name)) {
+ sid_copy(psid, pdb_get_user_sid(sam_user));
+ } else {
+ sid_append_rid(psid, fallback_pdb_uid_to_user_rid(uid));
+ }
+
+ DEBUG(10,("local_uid_to_sid: uid %u -> SID (%s) (%s).\n",
+ (unsigned)uid, sid_to_string( str, psid),
+ pass->pw_name ));
+
+ passwd_free(&pass);
+ pdb_free_sam(&sam_user);
+
+ } else {
+ sid_append_rid(psid, fallback_pdb_uid_to_user_rid(uid));
+
+ DEBUG(10,("local_uid_to_sid: uid %u -> SID (%s) (unknown user).\n",
+ (unsigned)uid, sid_to_string( str, psid)));
+ }
+
+ return psid;
+}
+
+/****************************************************************************
+ Convert a SID to uid - locally.
+****************************************************************************/
+
+BOOL local_sid_to_uid(uid_t *puid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
+{
+ fstring str;
+ SAM_ACCOUNT *sam_user = NULL;
+
+ *name_type = SID_NAME_UNKNOWN;
+
+ if (NT_STATUS_IS_ERR(pdb_init_sam(&sam_user)))
+ return False;
+
+ if (pdb_getsampwsid(sam_user, psid)) {
+
+ if (!IS_SAM_SET(sam_user,PDB_UID)&&!IS_SAM_CHANGED(sam_user,PDB_UID)) {
+ pdb_free_sam(&sam_user);
+ return False;
+ }
+
+ *puid = pdb_get_uid(sam_user);
+
+ DEBUG(10,("local_sid_to_uid: SID %s -> uid (%u) (%s).\n", sid_to_string( str, psid),
+ (unsigned int)*puid, pdb_get_username(sam_user)));
+ pdb_free_sam(&sam_user);
+ } else {
+
+ DOM_SID dom_sid;
+ uint32 rid;
+ GROUP_MAP map;
+
+ pdb_free_sam(&sam_user);
+
+ if (pdb_getgrsid(&map, *psid, MAPPING_WITHOUT_PRIV)) {
+ DEBUG(3, ("local_sid_to_uid: SID '%s' is a group, not a user... \n", sid_to_string(str, psid)));
+ /* It's a group, not a user... */
+ return False;
+ }
+
+ sid_copy(&dom_sid, psid);
+ if (!sid_peek_check_rid(get_global_sam_sid(), psid, &rid)) {
+ DEBUG(3, ("sid_peek_rid failed - sid '%s' is not in our domain\n", sid_to_string(str, psid)));
+ return False;
+ }
+
+ if (!pdb_rid_is_user(rid)) {
+ DEBUG(3, ("local_sid_to_uid: sid '%s' cannot be mapped to a uid algorithmicly becouse it is a group\n", sid_to_string(str, psid)));
+ return False;
+ }
+
+ *puid = fallback_pdb_user_rid_to_uid(rid);
+
+ DEBUG(5,("local_sid_to_uid: SID %s algorithmicly mapped to %ld mapped becouse SID was not found in passdb.\n",
+ sid_to_string(str, psid), (signed long int)(*puid)));
+ }
+
+ *name_type = SID_NAME_USER;
+
+ return True;
+}
+
+/****************************************************************************
+ Convert a gid to SID - locally.
+****************************************************************************/
+
+DOM_SID *local_gid_to_sid(DOM_SID *psid, gid_t gid)
+{
+ GROUP_MAP map;
+
+ sid_copy(psid, get_global_sam_sid());
+
+ if (pdb_getgrgid(&map, gid, MAPPING_WITHOUT_PRIV)) {
+ sid_copy(psid, &map.sid);
+ }
+ else {
+ sid_append_rid(psid, pdb_gid_to_group_rid(gid));
+ }
+
+ return psid;
+}
+
+/****************************************************************************
+ Convert a SID to gid - locally.
+****************************************************************************/
+
+BOOL local_sid_to_gid(gid_t *pgid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
+{
+ fstring str;
+ GROUP_MAP map;
+
+ *name_type = SID_NAME_UNKNOWN;
+
+ /*
+ * We can only convert to a gid if this is our local
+ * Domain SID (ie. we are the controling authority).
+ *
+ * Or in the Builtin SID too. JFM, 11/30/2001
+ */
+
+ if (pdb_getgrsid(&map, *psid, MAPPING_WITHOUT_PRIV)) {
+
+ /* the SID is in the mapping table but not mapped */
+ if (map.gid==(gid_t)-1)
+ return False;
+
+ *pgid = map.gid;
+ *name_type = map.sid_name_use;
+ DEBUG(10,("local_sid_to_gid: mapped SID %s (%s) -> gid (%u).\n",
+ sid_to_string( str, psid),
+ map.nt_name, (unsigned int)*pgid));
+
+ } else {
+ uint32 rid;
+ SAM_ACCOUNT *sam_user = NULL;
+ if (NT_STATUS_IS_ERR(pdb_init_sam(&sam_user)))
+ return False;
+
+ if (pdb_getsampwsid(sam_user, psid)) {
+ return False;
+ pdb_free_sam(&sam_user);
+ }
+
+ pdb_free_sam(&sam_user);
+
+ if (!sid_peek_check_rid(get_global_sam_sid(), psid, &rid)) {
+ DEBUG(3, ("sid_peek_rid failed - sid '%s' is not in our domain\n", sid_to_string(str, psid)));
+ return False;
+ }
+
+ if (pdb_rid_is_user(rid))
+ return False;
+
+ *pgid = pdb_group_rid_to_gid(rid);
+ *name_type = SID_NAME_ALIAS;
+ DEBUG(10,("local_sid_to_gid: SID %s -> gid (%u).\n", sid_to_string( str, psid),
+ (unsigned int)*pgid));
+ }
+
+ return True;
+}
+
+/*************************************************************
+ Change a password entry in the local smbpasswd file.
+
+It is currently being called by SWAT and by smbpasswd.
+
+ --jerry
+ *************************************************************/
+
+BOOL local_password_change(const char *user_name, int local_flags,
+ const char *new_passwd,
+ char *err_str, size_t err_str_len,
+ char *msg_str, size_t msg_str_len)
+{
+ struct passwd *pwd = NULL;
+ SAM_ACCOUNT *sam_pass=NULL;
+ uint16 other_acb;
+
+ *err_str = '\0';
+ *msg_str = '\0';
+
+ /* Get the smb passwd entry for this user */
+ pdb_init_sam(&sam_pass);
+ if(!pdb_getsampwnam(sam_pass, user_name)) {
+ pdb_free_sam(&sam_pass);
+
+ if (local_flags & LOCAL_ADD_USER) {
+ pwd = getpwnam_alloc(user_name);
+ } else if (local_flags & LOCAL_DELETE_USER) {
+ /* Might not exist in /etc/passwd */
+ } else {
+ slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name);
+ return False;
+ }
+
+ if (pwd) {
+ /* Local user found, so init from this */
+ if (!NT_STATUS_IS_OK(pdb_init_sam_pw(&sam_pass, pwd))){
+ slprintf(err_str, err_str_len-1, "Failed initialise SAM_ACCOUNT for user %s.\n", user_name);
+ passwd_free(&pwd);
+ return False;
+ }
+
+ passwd_free(&pwd);
+ } else {
+ if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_pass))){
+ slprintf(err_str, err_str_len-1, "Failed initialise SAM_ACCOUNT for user %s.\n", user_name);
+ return False;
+ }
+
+ if (!pdb_set_username(sam_pass, user_name, PDB_CHANGED)) {
+ slprintf(err_str, err_str_len - 1, "Failed to set username for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ }
+ } else {
+ /* the entry already existed */
+ local_flags &= ~LOCAL_ADD_USER;
+ }
+
+ /* the 'other' acb bits not being changed here */
+ other_acb = (pdb_get_acct_ctrl(sam_pass) & (!(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
+ if (local_flags & LOCAL_TRUST_ACCOUNT) {
+ if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
+ slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
+ if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
+ slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ } else {
+ if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
+ slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ }
+
+ /*
+ * We are root - just write the new password
+ * and the valid last change time.
+ */
+
+ if (local_flags & LOCAL_DISABLE_USER) {
+ if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
+ slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ } else if (local_flags & LOCAL_ENABLE_USER) {
+ if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
+ slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ }
+
+ if (local_flags & LOCAL_SET_NO_PASSWORD) {
+ if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
+ slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ } else if (local_flags & LOCAL_SET_PASSWORD) {
+ /*
+ * If we're dealing with setting a completely empty user account
+ * ie. One with a password of 'XXXX', but not set disabled (like
+ * an account created from scratch) then if the old password was
+ * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
+ * We remove that as we're giving this user their first password
+ * and the decision hasn't really been made to disable them (ie.
+ * don't create them disabled). JRA.
+ */
+ if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
+ if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
+ slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ }
+ if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
+ slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+
+ if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
+ slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ }
+
+ if (local_flags & LOCAL_ADD_USER) {
+ if (pdb_add_sam_account(sam_pass)) {
+ slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return True;
+ } else {
+ slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ } else if (local_flags & LOCAL_DELETE_USER) {
+ if (!pdb_delete_sam_account(sam_pass)) {
+ slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name);
+ } else {
+ if(!pdb_update_sam_account(sam_pass)) {
+ slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name);
+ pdb_free_sam(&sam_pass);
+ return False;
+ }
+ if(local_flags & LOCAL_DISABLE_USER)
+ slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name);
+ else if (local_flags & LOCAL_ENABLE_USER)
+ slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name);
+ else if (local_flags & LOCAL_SET_NO_PASSWORD)
+ slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name);
+ }
+
+ pdb_free_sam(&sam_pass);
+ return True;
+}