| 1 | /* 
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| 2 |    Unix SMB/CIFS implementation.
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| 3 |    Main winbindd server routines
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| 4 | 
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| 5 |    Copyright (C) Stefan Metzmacher      2005
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| 6 |    Copyright (C) Andrew Tridgell        2005
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| 7 |    
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| 8 |    This program is free software; you can redistribute it and/or modify
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| 9 |    it under the terms of the GNU General Public License as published by
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| 10 |    the Free Software Foundation; either version 3 of the License, or
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| 11 |    (at your option) any later version.
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| 12 |    
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| 13 |    This program is distributed in the hope that it will be useful,
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| 14 |    but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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| 16 |    GNU General Public License for more details.
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| 17 |    
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| 18 |    You should have received a copy of the GNU General Public License
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| 19 |    along with this program.  If not, see <http://www.gnu.org/licenses/>.
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| 20 | */
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| 21 | 
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| 22 | #include "nsswitch/winbind_nss_config.h"
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| 23 | #include "nsswitch/winbind_struct_protocol.h"
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| 24 | #include "winbind/idmap.h"
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| 25 | #include "libnet/libnet.h"
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| 26 | 
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| 27 | #define WINBINDD_SAMBA3_SOCKET "pipe"
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| 28 | /* the privileged socket is in smbd_tmp_dir() */
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| 29 | #define WINBINDD_SAMBA3_PRIVILEGED_SOCKET "winbind_pipe"
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| 30 | 
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| 31 | /* this struct stores global data for the winbind task */
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| 32 | struct wbsrv_service {
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| 33 |         struct task_server *task;
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| 34 | 
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| 35 |         const struct dom_sid *primary_sid;
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| 36 |         struct wbsrv_domain *domains;
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| 37 |         struct idmap_context *idmap_ctx;
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| 38 | 
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| 39 |         const char *priv_socket_path;
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| 40 | };
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| 41 | 
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| 42 | struct wbsrv_samconn {
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| 43 |         struct wbsrv_domain *domain;
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| 44 |         void *private_data;
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| 45 | 
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| 46 |         struct composite_context (*seqnum_send)(struct wbsrv_samconn *);
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| 47 |         NTSTATUS (*seqnum_recv)(struct composite_context *, uint64_t *);
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| 48 | };
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| 49 | 
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| 50 | struct wb_dom_info {
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| 51 |         const char *name;
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| 52 |         const char *dns_name;
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| 53 |         const struct dom_sid *sid;
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| 54 | 
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| 55 |         int num_dcs;
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| 56 |         struct nbt_dc_name *dcs;
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| 57 | };
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| 58 | 
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| 59 | struct wbsrv_domain {
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| 60 |         struct wbsrv_domain *next, *prev;
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| 61 | 
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| 62 |         struct wb_dom_info *info;
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| 63 | 
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| 64 |         /* Details for the server we are currently talking to */
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| 65 |         const char *dc_address;
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| 66 |         const char *dc_name;
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| 67 | 
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| 68 |         struct libnet_context *libnet_ctx;
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| 69 | 
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| 70 |         struct dcerpc_binding *lsa_binding;
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| 71 | 
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| 72 |         struct dcerpc_binding *samr_binding;
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| 73 | 
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| 74 |         struct dcerpc_pipe *netlogon_pipe;
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| 75 |         struct dcerpc_binding *netlogon_binding;
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| 76 | };
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| 77 | 
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| 78 | /*
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| 79 |   state of a listen socket and it's protocol information
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| 80 | */
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| 81 | struct wbsrv_listen_socket {
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| 82 |         const char *socket_path;
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| 83 |         struct wbsrv_service *service;
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| 84 |         bool privileged;
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| 85 | };
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| 86 | 
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| 87 | /*
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| 88 |   state of an open winbind connection
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| 89 | */
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| 90 | struct wbsrv_connection {
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| 91 |         /* stream connection we belong to */
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| 92 |         struct stream_connection *conn;
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| 93 | 
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| 94 |         /* the listening socket we belong to, it holds protocol hooks */
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| 95 |         struct wbsrv_listen_socket *listen_socket;
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| 96 | 
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| 97 |         /* storage for protocol specific data */
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| 98 |         void *protocol_private_data;
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| 99 | 
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| 100 |         /* how many calls are pending */
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| 101 |         uint32_t pending_calls;
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| 102 | 
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| 103 |         struct packet_context *packet;
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| 104 | 
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| 105 |         struct loadparm_context *lp_ctx;
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| 106 | };
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| 107 | 
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| 108 | #define WBSRV_SAMBA3_SET_STRING(dest, src) do { \
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| 109 |         safe_strcpy(dest, src, sizeof(dest)-1);\
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| 110 | } while(0)
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| 111 | 
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| 112 | /*
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| 113 |   state of a pwent query
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| 114 | */
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| 115 | struct wbsrv_pwent {
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| 116 |         /* Current UserList structure, contains 1+ user structs */
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| 117 |         struct libnet_UserList *user_list;
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| 118 | 
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| 119 |         /* Index of the next user struct in the current UserList struct */
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| 120 |         uint32_t page_index;
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| 121 | 
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| 122 |         /* The libnet_ctx to use for the libnet_UserList call */
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| 123 |         struct libnet_context *libnet_ctx;
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| 124 | };
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| 125 | 
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| 126 | /*
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| 127 |   state of one request
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| 128 | 
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| 129 |   NOTE about async replies:
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| 130 |    if the backend wants to reply later:
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| 131 | 
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| 132 |    - it should set the WBSRV_CALL_FLAGS_REPLY_ASYNC flag, and may set a 
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| 133 |      talloc_destructor on the this structure or on the private_data (if it's a
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| 134 |      talloc child of this structure), so that wbsrv_terminate_connection
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| 135 |      called by another call clean up the whole connection correct.
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| 136 |    - When the backend is ready to reply it should call wbsrv_send_reply(call),
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| 137 |      wbsrv_send_reply implies talloc_free(call), so the backend should use 
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| 138 |      talloc_reference(call), if it needs it later. 
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| 139 |    - If wbsrv_send_reply doesn't return NT_STATUS_OK, the backend function 
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| 140 |      should call, wbsrv_terminate_connection(call->wbconn, nt_errstr(status));
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| 141 |      return;
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| 142 | 
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| 143 | */
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| 144 | struct wbsrv_samba3_call {
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| 145 | #define WBSRV_CALL_FLAGS_REPLY_ASYNC 0x00000001
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| 146 |         uint32_t flags;
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| 147 | 
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| 148 |         /* the connection the call belongs to */
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| 149 |         struct wbsrv_connection *wbconn;
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| 150 | 
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| 151 |         /* the backend should use this event context */
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| 152 |         struct tevent_context *event_ctx;
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| 153 | 
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| 154 |         /* here the backend can store stuff like composite_context's ... */
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| 155 |         void *private_data;
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| 156 | 
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| 157 |         /* the request structure of the samba3 protocol */
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| 158 |         struct winbindd_request request;
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| 159 |         
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| 160 |         /* the response structure of the samba3 protocol*/
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| 161 |         struct winbindd_response response;
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| 162 | };
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| 163 | 
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| 164 | struct netr_LMSessionKey;
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| 165 | struct netr_UserSessionKey;
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| 166 | struct winbind_SamLogon;
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| 167 | 
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| 168 | #include "winbind/wb_async_helpers.h"
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| 169 | #include "winbind/wb_proto.h"
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