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-rw-r--r--source4/smbd/password.c492
1 files changed, 0 insertions, 492 deletions
diff --git a/source4/smbd/password.c b/source4/smbd/password.c
deleted file mode 100644
index 53530abf7a..0000000000
--- a/source4/smbd/password.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- Password and authentication handling
- Copyright (C) Andrew Tridgell 1992-1998
-
- 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"
-
-
-/****************************************************************************
-check if a uid has been validated, and return an pointer to the user_struct
-if it has. NULL if not. vuid is biased by an offset. This allows us to
-tell random client vuid's (normally zero) from valid vuids.
-****************************************************************************/
-struct user_struct *get_valid_user_struct(struct server_context *smb, uint16 vuid)
-{
- user_struct *usp;
- int count=0;
-
- if (vuid == UID_FIELD_INVALID)
- return NULL;
-
- for (usp=smb->users.validated_users;usp;usp=usp->next,count++) {
- if (vuid == usp->vuid) {
- if (count > 10) {
- DLIST_PROMOTE(smb->users.validated_users, usp);
- }
- return usp;
- }
- }
-
- return NULL;
-}
-
-/****************************************************************************
-invalidate a uid
-****************************************************************************/
-void invalidate_vuid(struct server_context *smb, uint16 vuid)
-{
- user_struct *vuser = get_valid_user_struct(smb, vuid);
-
- if (vuser == NULL)
- return;
-
- SAFE_FREE(vuser->homedir);
- SAFE_FREE(vuser->unix_homedir);
- SAFE_FREE(vuser->logon_script);
-
- session_yield(vuser);
-
- free_server_info(&vuser->server_info);
-
- DLIST_REMOVE(smb->users.validated_users, vuser);
-
- /* clear the vuid from the 'cache' on each connection, and
- from the vuid 'owner' of connections */
- /* REWRITE: conn_clear_vuid_cache(smb, vuid); */
-
- SAFE_FREE(vuser->groups);
- delete_nt_token(&vuser->nt_user_token);
- SAFE_FREE(vuser);
- smb->users.num_validated_vuids--;
-}
-
-/****************************************************************************
-invalidate all vuid entries for this process
-****************************************************************************/
-void invalidate_all_vuids(struct server_context *smb)
-{
- user_struct *usp, *next=NULL;
-
- for (usp=smb->users.validated_users;usp;usp=next) {
- next = usp->next;
-
- invalidate_vuid(smb, usp->vuid);
- }
-}
-
-/**
- * register that a valid login has been performed, establish 'session'.
- * @param server_info The token returned from the authentication process.
- * (now 'owned' by register_vuid)
- *
- * @return Newly allocated vuid, biased by an offset. (This allows us to
- * tell random client vuid's (normally zero) from valid vuids.)
- *
- */
-
-int register_vuid(struct server_context *smb,
- struct auth_serversupplied_info *server_info,
- const char *smb_name)
-{
- user_struct *vuser = NULL;
-
- /* Ensure no vuid gets registered in share level security. */
- if(lp_security() == SEC_SHARE)
- return UID_FIELD_INVALID;
-
- /* Limit allowed vuids to 16bits - VUID_OFFSET. */
- if (smb->users.num_validated_vuids >= 0xFFFF-VUID_OFFSET)
- return UID_FIELD_INVALID;
-
- if((vuser = (user_struct *)malloc( sizeof(user_struct) )) == NULL) {
- DEBUG(0,("Failed to malloc users struct!\n"));
- return UID_FIELD_INVALID;
- }
-
- ZERO_STRUCTP(vuser);
-
- /* Allocate a free vuid. Yes this is a linear search... :-) */
- while (get_valid_user_struct(smb, smb->users.next_vuid) != NULL ) {
- smb->users.next_vuid++;
- /* Check for vuid wrap. */
- if (smb->users.next_vuid == UID_FIELD_INVALID)
- smb->users.next_vuid = VUID_OFFSET;
- }
-
- DEBUG(10,("register_vuid: allocated vuid = %u\n",
- (unsigned int)smb->users.next_vuid));
-
- vuser->vuid = smb->users.next_vuid;
-
- /* the next functions should be done by a SID mapping system (SMS) as
- * the new real sam db won't have reference to unix uids or gids
- */
- if (!IS_SAM_UNIX_USER(server_info->sam_account)) {
- DEBUG(0,("Attempted session setup with invalid user. No uid/gid in SAM_ACCOUNT\n"));
- free(vuser);
- free_server_info(&server_info);
- return UID_FIELD_INVALID;
- }
-
- vuser->uid = pdb_get_uid(server_info->sam_account);
- vuser->gid = pdb_get_gid(server_info->sam_account);
-
- vuser->n_groups = server_info->n_groups;
- if (vuser->n_groups) {
- if (!(vuser->groups = memdup(server_info->groups, sizeof(gid_t) * vuser->n_groups))) {
- DEBUG(0,("register_vuid: failed to memdup vuser->groups\n"));
- free(vuser);
- free_server_info(&server_info);
- return UID_FIELD_INVALID;
- }
- }
-
- vuser->guest = server_info->guest;
- fstrcpy(vuser->user.unix_name, pdb_get_username(server_info->sam_account));
-
- /* This is a potentially untrusted username */
- alpha_strcpy(vuser->user.smb_name, smb_name, ". _-$", sizeof(vuser->user.smb_name));
-
- fstrcpy(vuser->user.domain, pdb_get_domain(server_info->sam_account));
- fstrcpy(vuser->user.full_name, pdb_get_fullname(server_info->sam_account));
-
- {
- /* Keep the homedir handy */
- const char *homedir = pdb_get_homedir(server_info->sam_account);
- const char *unix_homedir = pdb_get_unix_homedir(server_info->sam_account);
- const char *logon_script = pdb_get_logon_script(server_info->sam_account);
- if (homedir) {
- vuser->homedir = smb_xstrdup(homedir);
- }
-
- if (unix_homedir) {
- vuser->unix_homedir = smb_xstrdup(unix_homedir);
- }
-
- if (logon_script) {
- vuser->logon_script = smb_xstrdup(logon_script);
- }
- }
-
- memcpy(vuser->session_key, server_info->session_key, sizeof(vuser->session_key));
-
- DEBUG(10,("register_vuid: (%u,%u) %s %s %s guest=%d\n",
- (unsigned int)vuser->uid,
- (unsigned int)vuser->gid,
- vuser->user.unix_name, vuser->user.smb_name, vuser->user.domain, vuser->guest ));
-
- DEBUG(3, ("User name: %s\tReal name: %s\n",vuser->user.unix_name,vuser->user.full_name));
-
- if (server_info->ptok) {
- vuser->nt_user_token = dup_nt_token(server_info->ptok);
- } else {
- DEBUG(1, ("server_info does not contain a user_token - cannot continue\n"));
- free_server_info(&server_info);
- SAFE_FREE(vuser->homedir);
- SAFE_FREE(vuser->unix_homedir);
- SAFE_FREE(vuser->logon_script);
-
- SAFE_FREE(vuser);
- return UID_FIELD_INVALID;
- }
-
- /* use this to keep tabs on all our info from the authentication */
- vuser->server_info = server_info;
-
- DEBUG(3,("UNIX uid %d is UNIX user %s, and will be vuid %u\n",(int)vuser->uid,vuser->user.unix_name, vuser->vuid));
-
- smb->users.next_vuid++;
- smb->users.num_validated_vuids++;
-
- DLIST_ADD(smb->users.validated_users, vuser);
-
- if (!session_claim(smb, vuser)) {
- DEBUG(1,("Failed to claim session for vuid=%d\n", vuser->vuid));
- invalidate_vuid(smb, vuser->vuid);
- return -1;
- }
-
- /* Register a home dir service for this user */
- if ((!vuser->guest) && vuser->unix_homedir && *(vuser->unix_homedir)) {
- DEBUG(3, ("Adding/updating homes service for user '%s' using home direcotry: '%s'\n",
- vuser->user.unix_name, vuser->unix_homedir));
- vuser->homes_snum = add_home_service(vuser->user.unix_name, vuser->user.unix_name, vuser->unix_homedir);
- } else {
- vuser->homes_snum = -1;
- }
-
- return vuser->vuid;
-}
-
-
-/****************************************************************************
-add a name to the session users list
-****************************************************************************/
-void add_session_user(struct server_context *smb, const char *user)
-{
- char *suser;
- struct passwd *passwd;
-
- if (!(passwd = Get_Pwnam(user))) return;
-
- suser = strdup(passwd->pw_name);
- if (!suser) {
- return;
- }
-
- if (suser && *suser && !in_list(suser,smb->users.session_users,False)) {
- char *p;
- if (!smb->users.session_users) {
- asprintf(&p, "%s", suser);
- } else {
- asprintf(&p, "%s %s", smb->users.session_users, suser);
- }
- SAFE_FREE(smb->users.session_users);
- smb->users.session_users = p;
- }
-
- free(suser);
-}
-
-
-/****************************************************************************
-check if a username is valid
-****************************************************************************/
-BOOL user_ok(const char *user,int snum, gid_t *groups, size_t n_groups)
-{
- char **valid, **invalid;
- BOOL ret;
-
- valid = invalid = NULL;
- ret = True;
-
- if (lp_invalid_users(snum)) {
- str_list_copy(&invalid, lp_invalid_users(snum));
- if (invalid && str_list_substitute(invalid, "%S", lp_servicename(snum))) {
- ret = !user_in_list(user, (const char **)invalid, groups, n_groups);
- }
- }
- if (invalid)
- str_list_free (&invalid);
-
- if (ret && lp_valid_users(snum)) {
- str_list_copy(&valid, lp_valid_users(snum));
- if (valid && str_list_substitute(valid, "%S", lp_servicename(snum))) {
- ret = user_in_list(user, (const char **)valid, groups, n_groups);
- }
- }
- if (valid)
- str_list_free (&valid);
-
- if (ret && lp_onlyuser(snum)) {
- char **user_list = str_list_make (lp_username(snum), NULL);
- if (user_list && str_list_substitute(user_list, "%S", lp_servicename(snum))) {
- ret = user_in_list(user, (const char **)user_list, groups, n_groups);
- }
- if (user_list) str_list_free (&user_list);
- }
-
- return(ret);
-}
-
-/****************************************************************************
-validate a group username entry. Return the username or NULL
-****************************************************************************/
-static const char *validate_group(struct server_context *smb, const char *group, DATA_BLOB password,int snum)
-{
-#ifdef HAVE_NETGROUP
- {
- char *host, *user, *domain;
- setnetgrent(group);
- while (getnetgrent(&host, &user, &domain)) {
- if (user) {
- if (user_ok(user, snum, NULL, 0) &&
- password_ok(smb, user,password)) {
- endnetgrent();
- return(user);
- }
- }
- }
- endnetgrent();
- }
-#endif
-
-#ifdef HAVE_GETGRENT
- {
- struct group *gptr;
- setgrent();
- while ((gptr = (struct group *)getgrent())) {
- if (strequal(gptr->gr_name,group))
- break;
- }
-
- /*
- * As user_ok can recurse doing a getgrent(), we must
- * copy the member list into a pstring on the stack before
- * use. Bug pointed out by leon@eatworms.swmed.edu.
- */
-
- if (gptr) {
- pstring member_list;
- char *member;
- size_t copied_len = 0;
- int i;
-
- *member_list = '\0';
- member = member_list;
-
- for(i = 0; gptr->gr_mem && gptr->gr_mem[i]; i++) {
- size_t member_len = strlen(gptr->gr_mem[i]) + 1;
- if( copied_len + member_len < sizeof(pstring)) {
-
- DEBUG(10,("validate_group: = gr_mem = %s\n", gptr->gr_mem[i]));
-
- safe_strcpy(member, gptr->gr_mem[i], sizeof(pstring) - copied_len - 1);
- copied_len += member_len;
- member += copied_len;
- } else {
- *member = '\0';
- }
- }
-
- endgrent();
-
- member = member_list;
- while (*member) {
- const char *name = member;
- if (user_ok(name,snum, NULL, 0) &&
- password_ok(smb,name,password)) {
- endgrent();
- return(&name[0]);
- }
-
- DEBUG(10,("validate_group = member = %s\n", member));
-
- member += strlen(member) + 1;
- }
- } else {
- endgrent();
- return NULL;
- }
- }
-#endif
- return(NULL);
-}
-
-/****************************************************************************
- Check for authority to login to a service with a given username/password.
- Note this is *NOT* used when logging on using sessionsetup_and_X.
-****************************************************************************/
-
-BOOL authorise_login(struct server_context *smb,
- int snum, const char *user, DATA_BLOB password,
- BOOL *guest)
-{
- BOOL ok = False;
-
-#if DEBUG_PASSWORD
- DEBUG(100,("authorise_login: checking authorisation on user=%s pass=%s\n",
- user,password.data));
-#endif
-
- *guest = False;
-
- /* there are several possibilities:
- 1) login as the given user with given password
- 2) login as a previously registered username with the given password
- 3) login as a session list username with the given password
- 4) login as a previously validated user/password pair
- 5) login as the "user =" user with given password
- 6) login as the "user =" user with no password (guest connection)
- 7) login as guest user with no password
-
- if the service is guest_only then steps 1 to 5 are skipped
- */
-
- /* now check the list of session users */
- if (!ok) {
- char *auser;
- char *user_list = strdup(smb->users.session_users);
- if (!user_list)
- return(False);
-
- for (auser=strtok(user_list,LIST_SEP); !ok && auser;
- auser = strtok(NULL,LIST_SEP)) {
- const char *user2 = auser;
-
- if (!user_ok(user2,snum, NULL, 0))
- continue;
-
- if (password_ok(smb, user2,password)) {
- ok = True;
- DEBUG(3,("authorise_login: ACCEPTED: session list username (%s) \
-and given password ok\n", user2));
- }
- }
-
- SAFE_FREE(user_list);
- }
-
- /* check the user= fields and the given password */
- if (!ok && lp_username(snum)) {
- const char *auser;
- pstring user_list;
- StrnCpy(user_list,lp_username(snum),sizeof(pstring));
-
- pstring_sub(user_list,"%S",lp_servicename(snum));
-
- for (auser=strtok(user_list,LIST_SEP); auser && !ok;
- auser = strtok(NULL,LIST_SEP)) {
- if (*auser == '@') {
- auser = validate_group(smb, auser+1,password,snum);
- if (auser) {
- ok = True;
- DEBUG(3,("authorise_login: ACCEPTED: group username \
-and given password ok (%s)\n", auser));
- }
- } else {
- const char *user2 = auser;
- if (user_ok(user2,snum, NULL, 0) && password_ok(smb, user2,password)) {
- ok = True;
- DEBUG(3,("authorise_login: ACCEPTED: user list username \
-and given password ok (%s)\n", user2));
- }
- }
- }
- }
-
- /* check for a normal guest connection */
- if (!ok && GUEST_OK(snum)) {
- const char *guestname = lp_guestaccount();
- if (Get_Pwnam(guestname)) {
- ok = True;
- DEBUG(3,("authorise_login: ACCEPTED: guest account and guest ok (%s)\n", guestname));
- } else {
- DEBUG(0,("authorise_login: Invalid guest account %s??\n",guestname));
- }
- *guest = True;
- }
-
- if (ok && !user_ok(user, snum, NULL, 0)) {
- DEBUG(0,("authorise_login: rejected invalid user %s\n",user));
- ok = False;
- }
-
- return(ok);
-}
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