| 1 | /* |
| 2 | Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com> |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU Lesser General Public License as published by |
| 6 | the Free Software Foundation; either version 2.1 of the License, or |
| 7 | (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public License |
| 15 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | #include <rpc/auth.h> |
| 18 | |
| 19 | struct rpc_context { |
| 20 | int fd; |
| 21 | int is_connected; |
| 22 | |
| 23 | char *error_string; |
| 24 | |
| 25 | rpc_cb connect_cb; |
| 26 | void *connect_data; |
| 27 | |
| 28 | AUTH *auth; |
| 29 | unsigned long xid; |
| 30 | |
| 31 | /* buffer used for encoding RPC PDU */ |
| 32 | char *encodebuf; |
| 33 | int encodebuflen; |
| 34 | |
| 35 | struct rpc_pdu *outqueue; |
| 36 | struct sockaddr_storage udp_src; |
| 37 | struct rpc_pdu *waitpdu; |
| 38 | |
| 39 | int inpos; |
| 40 | int insize; |
| 41 | char *inbuf; |
| 42 | |
| 43 | /* special fields for UDP, which can sometimes be BROADCASTed */ |
| 44 | int is_udp; |
| 45 | struct sockaddr *udp_dest; |
| 46 | int is_broadcast; |
| 47 | }; |
| 48 | |
| 49 | struct rpc_pdu { |
| 50 | struct rpc_pdu *next; |
| 51 | |
| 52 | unsigned long xid; |
| 53 | XDR xdr; |
| 54 | |
| 55 | int written; |
| 56 | struct rpc_data outdata; |
| 57 | |
| 58 | rpc_cb cb; |
| 59 | void *private_data; |
| 60 | |
| 61 | /* function to decode the xdr reply data and buffer to decode into */ |
| 62 | xdrproc_t xdr_decode_fn; |
| 63 | caddr_t xdr_decode_buf; |
| 64 | int xdr_decode_bufsize; |
| 65 | }; |
| 66 | |
| 67 | struct rpc_pdu *rpc_allocate_pdu(struct rpc_context *rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, xdrproc_t xdr_decode_fn, int xdr_bufsize); |
| 68 | void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); |
| 69 | int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); |
| 70 | int rpc_get_pdu_size(char *buf); |
| 71 | int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size); |
| 72 | void rpc_error_all_pdus(struct rpc_context *rpc, char *error); |
| 73 | |
| 74 | void rpc_set_error(struct rpc_context *rpc, char *error_string, ...); |
| 75 | void nfs_set_error(struct nfs_context *nfs, char *error_string, ...); |
| 76 | |
| 77 | struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs); |
| 78 | |
| 79 | /* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */ |
| 80 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port); |
| 81 | struct rpc_context *rpc_init_udp_context(void); |