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84004dbf RS |
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 | */ | |
d7c6e9aa RS |
17 | #ifdef HAVE_CONFIG_H |
18 | #include "config.h" /* HAVE_SOCKADDR_STORAGE ? */ | |
19 | #endif | |
20 | ||
67a9f57e | 21 | #ifndef WIN32 |
763cd6e3 | 22 | #include <sys/socket.h> /* struct sockaddr_storage */ |
67a9f57e | 23 | #endif |
763cd6e3 RS |
24 | |
25 | #include "libnfs-zdr.h" | |
84004dbf | 26 | |
67a9f57e RS |
27 | |
28 | #if !defined(HAVE_SOCKADDR_STORAGE) && !defined(WIN32) | |
d7c6e9aa RS |
29 | /* |
30 | * RFC 2553: protocol-independent placeholder for socket addresses | |
31 | */ | |
32 | #define _SS_MAXSIZE 128 | |
33 | #define _SS_ALIGNSIZE (sizeof(double)) | |
34 | #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) * 2) | |
35 | #define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) * 2 - \ | |
36 | _SS_PAD1SIZE - _SS_ALIGNSIZE) | |
37 | ||
38 | struct sockaddr_storage { | |
0f9fe7c6 | 39 | #ifdef HAVE_SOCKADDR_LEN |
d7c6e9aa RS |
40 | unsigned char ss_len; /* address length */ |
41 | unsigned char ss_family; /* address family */ | |
42 | #else | |
43 | unsigned short ss_family; | |
44 | #endif | |
45 | char __ss_pad1[_SS_PAD1SIZE]; | |
46 | double __ss_align; /* force desired structure storage alignment */ | |
47 | char __ss_pad2[_SS_PAD2SIZE]; | |
48 | }; | |
49 | #endif | |
50 | ||
51 | ||
d678b73e RS |
52 | struct rpc_fragment { |
53 | struct rpc_fragment *next; | |
183451cf | 54 | uint64_t size; |
d678b73e RS |
55 | char *data; |
56 | }; | |
57 | ||
f3a75078 | 58 | #define RPC_CONTEXT_MAGIC 0xc6e46435 |
1c8b4547 | 59 | #define RPC_PARAM_UNDEFINED -1 |
f3a75078 | 60 | |
84004dbf | 61 | struct rpc_context { |
1c8b4547 | 62 | uint32_t magic; |
84004dbf RS |
63 | int fd; |
64 | int is_connected; | |
65 | ||
66 | char *error_string; | |
67 | ||
68 | rpc_cb connect_cb; | |
69 | void *connect_data; | |
70 | ||
67ba2239 | 71 | struct AUTH *auth; |
b93082da | 72 | uint32_t xid; |
84004dbf | 73 | |
1c8b4547 PL |
74 | /* buffer used for encoding RPC PDU */ |
75 | char *encodebuf; | |
76 | int encodebuflen; | |
84004dbf | 77 | |
1c8b4547 PL |
78 | struct rpc_pdu *outqueue; |
79 | struct sockaddr_storage udp_src; | |
80 | struct rpc_pdu *waitpdu; | |
84004dbf | 81 | |
1c8b4547 PL |
82 | uint32_t inpos; |
83 | uint32_t insize; | |
84 | char *inbuf; | |
d16a3ca4 | 85 | |
1c8b4547 PL |
86 | /* special fields for UDP, which can sometimes be BROADCASTed */ |
87 | int is_udp; | |
88 | struct sockaddr *udp_dest; | |
89 | int is_broadcast; | |
1744ef90 | 90 | |
1c8b4547 PL |
91 | /* track the address we connect to so we can auto-reconnect on session failure */ |
92 | struct sockaddr_storage s; | |
93 | int auto_reconnect; | |
d678b73e RS |
94 | |
95 | /* fragment reassembly */ | |
96 | struct rpc_fragment *fragments; | |
1c8b4547 PL |
97 | |
98 | /* parameters passable via URL */ | |
99 | int tcp_syncnt; | |
9126c9c0 PL |
100 | int uid; |
101 | int gid; | |
84004dbf RS |
102 | }; |
103 | ||
104 | struct rpc_pdu { | |
105 | struct rpc_pdu *next; | |
106 | ||
b93082da | 107 | uint32_t xid; |
763cd6e3 | 108 | ZDR zdr; |
84004dbf | 109 | |
d14e2838 | 110 | uint32_t written; |
84004dbf RS |
111 | struct rpc_data outdata; |
112 | ||
113 | rpc_cb cb; | |
114 | void *private_data; | |
115 | ||
763cd6e3 RS |
116 | /* function to decode the zdr reply data and buffer to decode into */ |
117 | zdrproc_t zdr_decode_fn; | |
118 | caddr_t zdr_decode_buf; | |
d14e2838 | 119 | uint32_t zdr_decode_bufsize; |
84004dbf RS |
120 | }; |
121 | ||
763cd6e3 | 122 | struct rpc_pdu *rpc_allocate_pdu(struct rpc_context *rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, zdrproc_t zdr_decode_fn, int zdr_bufsize); |
84004dbf RS |
123 | void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); |
124 | int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); | |
125 | int rpc_get_pdu_size(char *buf); | |
126 | int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size); | |
127 | void rpc_error_all_pdus(struct rpc_context *rpc, char *error); | |
128 | ||
1896d37b RS |
129 | void rpc_set_error(struct rpc_context *rpc, char *error_string, ...); |
130 | void nfs_set_error(struct nfs_context *nfs, char *error_string, ...); | |
131 | ||
b077fdeb RS |
132 | const char *nfs_get_server(struct nfs_context *nfs); |
133 | const char *nfs_get_export(struct nfs_context *nfs); | |
1896d37b | 134 | |
485bc9b9 RS |
135 | /* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */ |
136 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port); | |
5bf60dc6 | 137 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast); |
9e00b8c6 | 138 | struct rpc_context *rpc_init_udp_context(void); |
c481da67 RS |
139 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc); |
140 | ||
1744ef90 RS |
141 | void rpc_set_autoreconnect(struct rpc_context *rpc); |
142 | void rpc_unset_autoreconnect(struct rpc_context *rpc); | |
143 | ||
1c8b4547 | 144 | void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v); |
9126c9c0 PL |
145 | void rpc_set_uid(struct rpc_context *rpc, int uid); |
146 | void rpc_set_gid(struct rpc_context *rpc, int gid); | |
1c8b4547 | 147 | |
183451cf | 148 | int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size); |
d678b73e RS |
149 | void rpc_free_all_fragments(struct rpc_context *rpc); |
150 | ||
8724c833 | 151 | const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs); |