r23801: The FSF has moved around a lot. This fixes their Mass Ave address.
[ira/wip.git] / source / modules / vfs_afsacl.c
index 731ddfa58364f95f5ea6989e19513aa370b670aa..e057d217098223af59569a6b56320d635c21e1d5 100644 (file)
@@ -5,7 +5,7 @@
  *
  * 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
+ * the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *  
  * This program is distributed in the hope that it will be useful,
@@ -14,8 +14,7 @@
  * 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.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "includes.h"
@@ -39,13 +38,16 @@ extern const DOM_SID global_sid_NULL;
 
 static char space_replacement = '%';
 
+/* Do we expect SIDs as pts names? */
+static BOOL sidpts;
+
 extern int afs_syscall(int, char *, int, char *, int);
 
 struct afs_ace {
        BOOL positive;
        char *name;
        DOM_SID sid;
-       enum SID_NAME_USE type;
+       enum lsa_SidType type;
        uint32 rights;
        struct afs_ace *next;
 };
@@ -102,33 +104,12 @@ static struct afs_ace *clone_afs_ace(TALLOC_CTX *mem_ctx, struct afs_ace *ace)
        return result;
 }
        
-
-/* Ok, this is sort-of a hack. We assume here that we have winbind users in
- * AFS. And yet another copy of parse_domain_user.... */
-
-static BOOL parse_domain_user(const char *domuser, fstring domain,
-                             fstring user)
-{
-       char *p = strchr(domuser,*lp_winbind_separator());
-
-       if (p==NULL) {
-               return False;
-       }
-
-       fstrcpy(user, p+1);
-       fstrcpy(domain, domuser);
-       domain[PTR_DIFF(p, domuser)] = 0;
-       strupper_m(domain);
-       
-       return True;
-}
-
 static struct afs_ace *new_afs_ace(TALLOC_CTX *mem_ctx,
                                   BOOL positive,
                                   const char *name, uint32 rights)
 {
        DOM_SID sid;
-       enum SID_NAME_USE type;
+       enum lsa_SidType type;
        struct afs_ace *result;
 
        if (strcmp(name, "system:administrators") == 0) {
@@ -151,16 +132,31 @@ static struct afs_ace *new_afs_ace(TALLOC_CTX *mem_ctx,
                sid_copy(&sid, &global_sid_Builtin_Backup_Operators);
                type = SID_NAME_ALIAS;
 
+       } else if (sidpts) {
+               /* All PTS users/groups are expressed as SIDs */
+
+               sid_copy(&sid, &global_sid_NULL);
+               type = SID_NAME_UNKNOWN;
+
+               if (string_to_sid(&sid, name)) {
+                       const char *user, *domain;
+                       /* We have to find the type, look up the SID */
+                       lookup_sid(tmp_talloc_ctx(), &sid,
+                                  &domain, &user, &type);
+               }
+
        } else {
 
-               fstring user, domain;
+               const char *domain, *uname;
+               char *p;
 
-               if (!parse_domain_user(name, domain, user)) {
-                       fstrcpy(user, name);
-                       fstrcpy(domain, lp_workgroup());
+               p = strchr_m(name, *lp_winbind_separator());
+               if (p != NULL) {
+                       *p = '\\';
                }
-                   
-               if (!lookup_name(domain, user, &sid, &type)) {
+
+               if (!lookup_name(tmp_talloc_ctx(), name, LOOKUP_NAME_ALL,
+                                &domain, &uname, &sid, &type)) {
                        DEBUG(10, ("Could not find AFS user %s\n", name));
 
                        sid_copy(&sid, &global_sid_NULL);
@@ -592,7 +588,7 @@ static uint32 nt_to_afs_file_rights(const char *filename, const SEC_ACE *ace)
 static size_t afs_to_nt_acl(struct afs_acl *afs_acl, 
                            struct files_struct *fsp,
                            uint32 security_info,
-                           struct security_descriptor_info **ppdesc)
+                           struct security_descriptor **ppdesc)
 {
        SEC_ACE *nt_ace_list;
        DOM_SID owner_sid, group_sid;
@@ -619,10 +615,14 @@ static size_t afs_to_nt_acl(struct afs_acl *afs_acl,
        uid_to_sid(&owner_sid, sbuf.st_uid);
        gid_to_sid(&group_sid, sbuf.st_gid);
 
-       nt_ace_list = TALLOC_ARRAY(mem_ctx, SEC_ACE, afs_acl->num_aces);
+       if (afs_acl->num_aces) {
+               nt_ace_list = TALLOC_ARRAY(mem_ctx, SEC_ACE, afs_acl->num_aces);
 
-       if (nt_ace_list == NULL)
-               return 0;
+               if (nt_ace_list == NULL)
+                       return 0;
+       } else {
+               nt_ace_list = NULL;
+       }
 
        afs_ace = afs_acl->acelist;
        good_aces = 0;
@@ -694,7 +694,7 @@ static BOOL mappable_sid(const DOM_SID *sid)
 
 static BOOL nt_to_afs_acl(const char *filename,
                          uint32 security_info_sent,
-                         struct security_descriptor_info *psd,
+                         struct security_descriptor *psd,
                          uint32 (*nt_to_afs_rights)(const char *filename,
                                                     const SEC_ACE *ace),
                          struct afs_acl *afs_acl)
@@ -715,9 +715,8 @@ static BOOL nt_to_afs_acl(const char *filename,
 
        for (i = 0; i < dacl->num_aces; i++) {
                SEC_ACE *ace = &(dacl->ace[i]);
-               fstring dom_name;
-               fstring name;
-               enum SID_NAME_USE name_type;
+               const char *dom_name, *name;
+               enum lsa_SidType name_type;
                char *p;
 
                if (ace->type != SEC_ACE_TYPE_ACCESS_ALLOWED) {
@@ -734,28 +733,28 @@ static BOOL nt_to_afs_acl(const char *filename,
                if (sid_compare(&ace->trustee,
                                &global_sid_Builtin_Administrators) == 0) {
 
-                       fstrcpy(name, "system:administrators");
+                       name = "system:administrators";
 
                } else if (sid_compare(&ace->trustee,
                                       &global_sid_World) == 0) {
 
-                       fstrcpy(name, "system:anyuser");
+                       name = "system:anyuser";
 
                } else if (sid_compare(&ace->trustee,
                                       &global_sid_Authenticated_Users) == 0) {
 
-                       fstrcpy(name, "system:authuser");
+                       name = "system:authuser";
 
                } else if (sid_compare(&ace->trustee,
                                       &global_sid_Builtin_Backup_Operators)
                           == 0) {
 
-                       fstrcpy(name, "system:backup");
+                       name = "system:backup";
 
                } else {
 
-                       if (!lookup_sid(&ace->trustee,
-                                       dom_name, name, &name_type)) {
+                       if (!lookup_sid(tmp_talloc_ctx(), &ace->trustee,
+                                       &dom_name, &name, &name_type)) {
                                DEBUG(1, ("AFSACL: Could not lookup SID %s on file %s\n",
                                          sid_string_static(&ace->trustee), filename));
                                continue;
@@ -763,13 +762,26 @@ static BOOL nt_to_afs_acl(const char *filename,
 
                        if ( (name_type == SID_NAME_USER) ||
                             (name_type == SID_NAME_DOM_GRP) ||
-                            (name_type == SID_NAME_ALIAS) ) { 
-                               fstring only_username;
-                               fstrcpy(only_username, name);
-                               fstr_sprintf(name, "%s%s%s",
-                                            dom_name, lp_winbind_separator(),
-                                            only_username);
-                               strlower_m(name);
+                            (name_type == SID_NAME_ALIAS) ) {
+                               char *tmp;
+                               tmp = talloc_asprintf(tmp_talloc_ctx(), "%s%s%s",
+                                                      dom_name, lp_winbind_separator(),
+                                                      name);
+                               if (tmp == NULL) {
+                                       return False;
+                               }
+                               strlower_m(tmp);
+                               name = tmp;
+                       }
+
+                       if (sidpts) {
+                               /* Expect all users/groups in pts as SIDs */
+                               name = talloc_strdup(
+                                       tmp_talloc_ctx(),
+                                       sid_string_static(&ace->trustee));
+                               if (name == NULL) {
+                                       return False;
+                               }
                        }
                }
 
@@ -818,13 +830,15 @@ static BOOL afs_get_afs_acl(char *filename, struct afs_acl *acl)
 }
 
 static size_t afs_get_nt_acl(struct files_struct *fsp, uint32 security_info,
-                            struct security_descriptor_info **ppdesc)
+                            struct security_descriptor **ppdesc)
 {
        struct afs_acl acl;
        size_t sd_size;
 
        DEBUG(5, ("afs_get_nt_acl: %s\n", fsp->fsp_name));
 
+       sidpts = lp_parm_bool(SNUM(fsp->conn), "afsacl", "sidpts", False);
+
        if (!afs_get_afs_acl(fsp->fsp_name, &acl)) {
                return 0;
        }
@@ -868,9 +882,9 @@ static void merge_unknown_aces(struct afs_acl *src, struct afs_acl *dst)
        }
 }
 
-static BOOL afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
+static NTSTATUS afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
                           uint32 security_info_sent,
-                          struct security_descriptor_info *psd)
+                          struct security_descriptor *psd)
 {
        struct afs_acl old_afs_acl, new_afs_acl;
        struct afs_acl dir_acl, file_acl;
@@ -883,20 +897,24 @@ static BOOL afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
        fileacls = lp_parm_const_string(SNUM(handle->conn), "afsacl", "fileacls",
                                        "yes");
 
+       sidpts = lp_parm_bool(SNUM(handle->conn), "afsacl", "sidpts", False);
+
        ZERO_STRUCT(old_afs_acl);
        ZERO_STRUCT(new_afs_acl);
        ZERO_STRUCT(dir_acl);
        ZERO_STRUCT(file_acl);
 
-       pstr_sprintf(name, fsp->fsp_name);
+       pstrcpy(name, fsp->fsp_name);
 
        if (!fsp->is_directory) {
+               /* We need to get the name of the directory containing the
+                * file, this is where the AFS acls live */
                char *p = strrchr(name, '/');
-               if (p == NULL) {
-                       DEBUG(3, ("No / in file string\n"));
-                       return False;
+               if (p != NULL) {
+                       *p = '\0';
+               } else {
+                       pstrcpy(name, ".");
                }
-               *p = '\0';
        }
 
        if (!afs_get_afs_acl(name, &old_afs_acl)) {
@@ -961,25 +979,25 @@ static BOOL afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
        free_afs_acl(&old_afs_acl);
        free_afs_acl(&new_afs_acl);
 
-       return (ret == 0);
+       return (ret == 0) ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED;
 }
 
 static size_t afsacl_fget_nt_acl(struct vfs_handle_struct *handle,
                                 struct files_struct *fsp,
                                 int fd,  uint32 security_info,
-                                struct security_descriptor_info **ppdesc)
+                                struct security_descriptor **ppdesc)
 {
        return afs_get_nt_acl(fsp, security_info, ppdesc);
 }
 static size_t afsacl_get_nt_acl(struct vfs_handle_struct *handle,
                                struct files_struct *fsp,
                                const char *name,  uint32 security_info,
-                               struct security_descriptor_info **ppdesc)
+                               struct security_descriptor **ppdesc)
 {
        return afs_get_nt_acl(fsp, security_info, ppdesc);
 }
 
-BOOL afsacl_fset_nt_acl(vfs_handle_struct *handle,
+NTSTATUS afsacl_fset_nt_acl(vfs_handle_struct *handle,
                         files_struct *fsp,
                         int fd, uint32 security_info_sent,
                         SEC_DESC *psd)
@@ -987,7 +1005,7 @@ BOOL afsacl_fset_nt_acl(vfs_handle_struct *handle,
        return afs_set_nt_acl(handle, fsp, security_info_sent, psd);
 }
 
-BOOL afsacl_set_nt_acl(vfs_handle_struct *handle,
+NTSTATUS afsacl_set_nt_acl(vfs_handle_struct *handle,
                       files_struct *fsp,
                       const char *name, uint32 security_info_sent,
                       SEC_DESC *psd)
@@ -996,18 +1014,17 @@ BOOL afsacl_set_nt_acl(vfs_handle_struct *handle,
 }
 
 static int afsacl_connect(vfs_handle_struct *handle, 
-                         connection_struct *conn, 
                          const char *service, 
                          const char *user)
 {
-       char *spc;
+       const char *spc;
 
        spc = lp_parm_const_string(SNUM(handle->conn), "afsacl", "space", "%");
 
        if (spc != NULL)
                space_replacement = spc[0];
        
-       return SMB_VFS_NEXT_CONNECT(handle, conn, service, user);
+       return SMB_VFS_NEXT_CONNECT(handle, service, user);
 }
 
 /* VFS operations structure */
@@ -1026,6 +1043,7 @@ static vfs_op_tuple afsacl_ops[] = {
        {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 };
 
+NTSTATUS vfs_afsacl_init(void);
 NTSTATUS vfs_afsacl_init(void)
 {
        return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "afsacl",