source3/include/client.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB parameters and setup
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Luke Kenneth Casson Leighton 1996-1998
   6    Copyright (C) Jeremy Allison 1998
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef _CLIENT_H
  23 #define _CLIENT_H
  24
  25 #include "../librpc/ndr/libndr.h"
  26
  27 /* the client asks for a smaller buffer to save ram and also to get more
  28    overlap on the wire. This size gives us a nice read/write size, which
  29    will be a multiple of the page size on almost any system */
  30 #define CLI_BUFFER_SIZE (0xFFFF)
  31 #define CLI_SAMBA_MAX_LARGE_READX_SIZE (127*1024) /* Works for Samba servers */
  32 #define CLI_SAMBA_MAX_LARGE_WRITEX_SIZE (127*1024) /* Works for Samba servers */
  33 #define CLI_WINDOWS_MAX_LARGE_READX_SIZE ((64*1024)-2) /* Windows servers are broken.... */
  34 #define CLI_WINDOWS_MAX_LARGE_WRITEX_SIZE ((64*1024)-2) /* Windows servers are broken.... */
  35 #define CLI_SAMBA_MAX_POSIX_LARGE_READX_SIZE (0xFFFF00) /* 24-bit len. */
  36 #define CLI_SAMBA_MAX_POSIX_LARGE_WRITEX_SIZE (0xFFFF00) /* 24-bit len. */
  37
  38 /*
  39  * These definitions depend on smb.h
  40  */
  41
  42 struct print_job_info {
  43         uint16 id;
  44         uint16 priority;
  45         size_t size;
  46         fstring user;
  47         fstring name;
  48         time_t t;
  49 };
  50
  51 /**
  52  * rpc_cli_transport defines a transport mechanism to ship rpc requests
  53  * asynchronously to a server and receive replies
  54  */
  55
  56 struct rpc_cli_transport {
  57
  58         enum dcerpc_transport_t transport;
  59
  60         /**
  61          * Trigger an async read from the server. May return a short read.
  62          */
  63         struct tevent_req *(*read_send)(TALLOC_CTX *mem_ctx,
  64                                         struct event_context *ev,
  65                                         uint8_t *data, size_t size,
  66                                         void *priv);
  67         /**
  68          * Get the result from the read_send operation.
  69          */
  70         NTSTATUS (*read_recv)(struct tevent_req *req, ssize_t *preceived);
  71
  72         /**
  73          * Trigger an async write to the server. May return a short write.
  74          */
  75         struct tevent_req *(*write_send)(TALLOC_CTX *mem_ctx,
  76                                          struct event_context *ev,
  77                                          const uint8_t *data, size_t size,
  78                                          void *priv);
  79         /**
  80          * Get the result from the read_send operation.
  81          */
  82         NTSTATUS (*write_recv)(struct tevent_req *req, ssize_t *psent);
  83
  84         /**
  85          * This is an optimization for the SMB transport. It models the
  86          * TransactNamedPipe API call: Send and receive data in one round
  87          * trip. The transport implementation is free to set this to NULL,
  88          * cli_pipe.c will fall back to the explicit write/read routines.
  89          */
  90         struct tevent_req *(*trans_send)(TALLOC_CTX *mem_ctx,
  91                                          struct event_context *ev,
  92                                          uint8_t *data, size_t data_len,
  93                                          uint32_t max_rdata_len,
  94                                          void *priv);
  95         /**
  96          * Get the result from the trans_send operation.
  97          */
  98         NTSTATUS (*trans_recv)(struct tevent_req *req, TALLOC_CTX *mem_ctx,
  99                                uint8_t **prdata, uint32_t *prdata_len);
 100
 101         bool (*is_connected)(void *priv);
 102         unsigned int (*set_timeout)(void *priv, unsigned int timeout);
 103
 104         void *priv;
 105 };
 106
 107 struct dcerpc_binding_handle;
 108
 109 struct rpc_pipe_client {
 110         struct rpc_pipe_client *prev, *next;
 111
 112         struct rpc_cli_transport *transport;
 113         struct dcerpc_binding_handle *binding_handle;
 114
 115         struct ndr_syntax_id abstract_syntax;
 116         struct ndr_syntax_id transfer_syntax;
 117
 118         char *desthost;
 119         char *srv_name_slash;
 120
 121         uint16 max_xmit_frag;
 122         uint16 max_recv_frag;
 123
 124         struct pipe_auth_data *auth;
 125
 126         /* The following is only non-null on a netlogon client pipe. */
 127         struct netlogon_creds_CredentialState *dc;
 128
 129         /* Used by internal rpc_pipe_client */
 130         struct pipes_struct *pipes_struct;
 131 };
 132
 133 /* Transport encryption state. */
 134 enum smb_trans_enc_type {
 135                 SMB_TRANS_ENC_NTLM
 136 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 137                 , SMB_TRANS_ENC_GSS
 138 #endif
 139 };
 140
 141 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 142 struct smb_tran_enc_state_gss {
 143         gss_ctx_id_t gss_ctx;
 144         gss_cred_id_t creds;
 145 };
 146 #endif
 147
 148 struct smb_trans_enc_state {
 149         enum smb_trans_enc_type smb_enc_type;
 150         uint16 enc_ctx_num;
 151         bool enc_on;
 152         union {
 153                 struct ntlmssp_state *ntlmssp_state;
 154 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
 155                 struct smb_tran_enc_state_gss *gss_state;
 156 #endif
 157         } s;
 158 };
 159
 160 struct cli_state_seqnum {
 161         struct cli_state_seqnum *prev, *next;
 162         uint16_t mid;
 163         uint32_t seqnum;
 164         bool persistent;
 165 };
 166
 167 struct cli_state {
 168         /**
 169          * A list of subsidiary connections for DFS.
 170          */
 171         struct cli_state *prev, *next;
 172         int port;
 173         int fd;
 174         /* Last read or write error. */
 175         enum smb_read_errors smb_rw_error;
 176         uint16 cnum;
 177         uint16 pid;
 178         uint16 mid;
 179         uint16 vuid;
 180         int protocol;
 181         int sec_mode;
 182         int rap_error;
 183         int privileges;
 184
 185         fstring desthost;
 186
 187         /* The credentials used to open the cli_state connection. */
 188         char *domain;
 189         char *user_name;
 190         char *password; /* Can be null to force use of zero NTLMSSP session key. */
 191
 192         /*
 193          * The following strings are the
 194          * ones returned by the server if
 195          * the protocol > NT1.
 196          */
 197         fstring server_type;
 198         fstring server_os;
 199         fstring server_domain;
 200
 201         fstring share;
 202         fstring dev;
 203         struct nmb_name called;
 204         struct nmb_name calling;
 205         struct sockaddr_storage dest_ss;
 206
 207         DATA_BLOB secblob; /* cryptkey or negTokenInit */
 208         uint32 sesskey;
 209         int serverzone;
 210         uint32 servertime;
 211         int readbraw_supported;
 212         int writebraw_supported;
 213         int timeout; /* in milliseconds. */
 214         size_t max_xmit;
 215         size_t max_mux;
 216         char *outbuf;
 217         struct cli_state_seqnum *seqnum;
 218         char *inbuf;
 219         unsigned int bufsize;
 220         int initialised;
 221         int win95;
 222         bool is_samba;
 223         uint32 capabilities;
 224         /* What the server offered. */
 225         uint32_t server_posix_capabilities;
 226         /* What the client requested. */
 227         uint32_t requested_posix_capabilities;
 228         bool dfsroot;
 229
 230         struct smb_signing_state *signing_state;
 231
 232         struct smb_trans_enc_state *trans_enc_state; /* Setup if we're encrypting SMB's. */
 233
 234         /* the session key for this CLI, outside
 235            any per-pipe authenticaion */
 236         DATA_BLOB user_session_key;
 237
 238         /* The list of pipes currently open on this connection. */
 239         struct rpc_pipe_client *pipe_list;
 240
 241         bool use_kerberos;
 242         bool fallback_after_kerberos;
 243         bool use_spnego;
 244         bool use_ccache;
 245         bool got_kerberos_mechanism; /* Server supports krb5 in SPNEGO. */
 246
 247         bool use_oplocks; /* should we use oplocks? */
 248         bool use_level_II_oplocks; /* should we use level II oplocks? */
 249
 250         /* a oplock break request handler */
 251         NTSTATUS (*oplock_handler)(struct cli_state *cli, uint16_t fnum, unsigned char level);
 252
 253         bool force_dos_errors;
 254         bool case_sensitive; /* False by default. */
 255
 256         /* Where (if anywhere) this is mounted under DFS. */
 257         char *dfs_mountpoint;
 258
 259         struct tevent_queue *outgoing;
 260         struct tevent_req **pending;
 261 };
 262
 263 struct file_info {
 264         uint64_t size;
 265         uint16 mode;
 266         uid_t uid;
 267         gid_t gid;
 268         /* these times are normally kept in GMT */
 269         struct timespec mtime_ts;
 270         struct timespec atime_ts;
 271         struct timespec ctime_ts;
 272         char *name;
 273         char short_name[13*3]; /* the *3 is to cope with multi-byte */
 274 };
 275
 276 #define CLI_FULL_CONNECTION_DONT_SPNEGO 0x0001
 277 #define CLI_FULL_CONNECTION_USE_KERBEROS 0x0002
 278 #define CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK 0x0004
 279 #define CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS 0x0008
 280 #define CLI_FULL_CONNECTION_OPLOCKS 0x0010
 281 #define CLI_FULL_CONNECTION_LEVEL_II_OPLOCKS 0x0020
 282 #define CLI_FULL_CONNECTION_USE_CCACHE 0x0040
 283
 284 #endif /* _CLIENT_H */