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 | /* this struct stores global data for the winbind task */
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28 | struct wbsrv_service {
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29 | struct task_server *task;
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30 |
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31 | const struct dom_sid *primary_sid;
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32 | enum netr_SchannelType sec_channel_type;
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33 | struct wbsrv_domain *domains;
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34 | struct idmap_context *idmap_ctx;
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35 | const char *priv_pipe_dir;
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36 | const char *pipe_dir;
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37 | };
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38 |
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39 | struct wbsrv_samconn {
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40 | struct wbsrv_domain *domain;
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41 | void *private_data;
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42 |
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43 | struct composite_context (*seqnum_send)(struct wbsrv_samconn *);
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44 | NTSTATUS (*seqnum_recv)(struct composite_context *, uint64_t *);
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45 | };
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46 |
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47 | struct wb_dom_info {
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48 | const char *name;
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49 | const char *dns_name;
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50 | const struct dom_sid *sid;
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51 | struct nbt_dc_name *dc;
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52 | };
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53 |
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54 | struct wbsrv_domain {
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55 | struct wbsrv_domain *next, *prev;
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56 |
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57 | struct wb_dom_info *info;
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58 |
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59 | /* Details for the server we are currently talking to */
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60 | const char *dc_address;
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61 | const char *dc_name;
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62 |
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63 | struct libnet_context *libnet_ctx;
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64 |
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65 | struct dcerpc_binding *lsa_binding;
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66 |
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67 | struct dcerpc_binding *samr_binding;
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68 |
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69 | struct dcerpc_pipe *netlogon_pipe;
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70 | struct dcerpc_binding *netlogon_binding;
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71 | };
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72 |
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73 | /*
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74 | state of a listen socket and it's protocol information
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75 | */
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76 | struct wbsrv_listen_socket {
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77 | const char *socket_path;
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78 | struct wbsrv_service *service;
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79 | bool privileged;
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80 | };
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81 |
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82 | /*
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83 | state of an open winbind connection
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84 | */
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85 | struct wbsrv_connection {
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86 | /* stream connection we belong to */
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87 | struct stream_connection *conn;
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88 |
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89 | /* the listening socket we belong to, it holds protocol hooks */
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90 | struct wbsrv_listen_socket *listen_socket;
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91 |
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92 | /* storage for protocol specific data */
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93 | void *protocol_private_data;
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94 |
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95 | /* how many calls are pending */
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96 | uint32_t pending_calls;
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97 |
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98 | struct tstream_context *tstream;
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99 |
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100 | struct tevent_queue *send_queue;
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101 |
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102 | struct loadparm_context *lp_ctx;
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103 | };
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104 |
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105 | #define WBSRV_SAMBA3_SET_STRING(dest, src) do { \
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106 | memset(dest, 0, sizeof(dest));\
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107 | safe_strcpy(dest, src, sizeof(dest)-1);\
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108 | } while(0)
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109 |
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110 | /*
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111 | state of a pwent query
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112 | */
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113 | struct wbsrv_pwent {
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114 | /* Current UserList structure, contains 1+ user structs */
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115 | struct libnet_UserList *user_list;
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116 |
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117 | /* Index of the next user struct in the current UserList struct */
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118 | uint32_t page_index;
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119 |
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120 | /* The libnet_ctx to use for the libnet_UserList call */
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121 | struct libnet_context *libnet_ctx;
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122 | };
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123 | /*
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124 | state of a grent query
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125 | */
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126 | struct wbsrv_grent {
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127 | /* Current UserList structure, contains 1+ user structs */
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128 | struct libnet_GroupList *group_list;
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129 |
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130 | /* Index of the next user struct in the current UserList struct */
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131 | uint32_t page_index;
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132 |
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133 | /* The libnet_ctx to use for the libnet_UserList call */
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134 | struct libnet_context *libnet_ctx;
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135 | };
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136 |
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137 | /*
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138 | state of one request
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139 |
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140 | NOTE about async replies:
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141 | if the backend wants to reply later:
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142 |
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143 | - it should set the WBSRV_CALL_FLAGS_REPLY_ASYNC flag, and may set a
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144 | talloc_destructor on the this structure or on the private_data (if it's a
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145 | talloc child of this structure), so that wbsrv_terminate_connection
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146 | called by another call clean up the whole connection correct.
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147 | - When the backend is ready to reply it should call wbsrv_send_reply(call),
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148 | wbsrv_send_reply implies talloc_free(call), so the backend should use
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149 | talloc_reference(call), if it needs it later.
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150 | - If wbsrv_send_reply doesn't return NT_STATUS_OK, the backend function
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151 | should call, wbsrv_terminate_connection(call->wbconn, nt_errstr(status));
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152 | return;
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153 |
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154 | */
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155 | struct wbsrv_samba3_call {
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156 | #define WBSRV_CALL_FLAGS_REPLY_ASYNC 0x00000001
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157 | uint32_t flags;
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158 |
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159 | /* the connection the call belongs to */
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160 | struct wbsrv_connection *wbconn;
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161 |
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162 | /* here the backend can store stuff like composite_context's ... */
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163 | void *private_data;
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164 |
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165 | /* the request structure of the samba3 protocol */
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166 | struct winbindd_request *request;
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167 |
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168 | /* the response structure of the samba3 protocol*/
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169 | struct winbindd_response *response;
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170 |
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171 | DATA_BLOB in;
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172 | DATA_BLOB out;
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173 | struct iovec out_iov[1];
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174 | };
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175 |
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176 | struct netr_LMSessionKey;
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177 | struct netr_UserSessionKey;
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178 | struct winbind_SamLogon;
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179 | struct winbind_DsrUpdateReadOnlyServerDnsRecords;
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180 |
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181 | #include "winbind/wb_async_helpers.h"
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182 | #include "winbind/wb_proto.h"
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