658ffe30d6d5e54a9951ac8cbf232373b1c968ac
[kai/samba-autobuild/.git] / source3 / rpc_client / rpc_transport_sock.c
1 /*
2  *  Unix SMB/CIFS implementation.
3  *  RPC client transport over a socket
4  *  Copyright (C) Volker Lendecke 2009
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 3 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include "includes.h"
21
22 #undef DBGC_CLASS
23 #define DBGC_CLASS DBGC_RPC_CLI
24
25 struct rpc_transport_sock_state {
26         int fd;
27 };
28
29 static int rpc_transport_sock_state_destructor(struct rpc_transport_sock_state *s)
30 {
31         if (s->fd != -1) {
32                 close(s->fd);
33                 s->fd = -1;
34         }
35         return 0;
36 }
37
38 struct rpc_sock_read_state {
39         ssize_t received;
40 };
41
42 static void rpc_sock_read_done(struct tevent_req *subreq);
43
44 static struct async_req *rpc_sock_read_send(TALLOC_CTX *mem_ctx,
45                                             struct event_context *ev,
46                                             uint8_t *data, size_t size,
47                                             void *priv)
48 {
49         struct rpc_transport_sock_state *sock_transp = talloc_get_type_abort(
50                 priv, struct rpc_transport_sock_state);
51         struct async_req *result;
52         struct tevent_req *subreq;
53         struct rpc_sock_read_state *state;
54
55         if (!async_req_setup(mem_ctx, &result, &state,
56                              struct rpc_sock_read_state)) {
57                 return NULL;
58         }
59
60         subreq = async_recv_send(state, ev, sock_transp->fd, data, size, 0);
61         if (subreq == NULL) {
62                 goto fail;
63         }
64         subreq->async.fn = rpc_sock_read_done;
65         subreq->async.private_data = result;
66         return result;
67  fail:
68         TALLOC_FREE(result);
69         return NULL;
70 }
71
72 static void rpc_sock_read_done(struct tevent_req *subreq)
73 {
74         struct async_req *req = talloc_get_type_abort(
75                 subreq->async.private_data, struct async_req);
76         struct rpc_sock_read_state *state = talloc_get_type_abort(
77                 req->private_data, struct rpc_sock_read_state);
78         int err;
79
80         state->received = async_recv_recv(subreq, &err);
81         if (state->received == -1) {
82                 async_req_nterror(req, map_nt_error_from_unix(err));
83                 return;
84         }
85         async_req_done(req);
86 }
87
88 static NTSTATUS rpc_sock_read_recv(struct async_req *req, ssize_t *preceived)
89 {
90         struct rpc_sock_read_state *state = talloc_get_type_abort(
91                 req->private_data, struct rpc_sock_read_state);
92         NTSTATUS status;
93
94         if (async_req_is_nterror(req, &status)) {
95                 return status;
96         }
97         *preceived = state->received;
98         return NT_STATUS_OK;
99 }
100
101 struct rpc_sock_write_state {
102         ssize_t sent;
103 };
104
105 static void rpc_sock_write_done(struct tevent_req *subreq);
106
107 static struct async_req *rpc_sock_write_send(TALLOC_CTX *mem_ctx,
108                                              struct event_context *ev,
109                                              const uint8_t *data, size_t size,
110                                              void *priv)
111 {
112         struct rpc_transport_sock_state *sock_transp = talloc_get_type_abort(
113                 priv, struct rpc_transport_sock_state);
114         struct async_req *result;
115         struct tevent_req *subreq;
116         struct rpc_sock_write_state *state;
117
118         if (!async_req_setup(mem_ctx, &result, &state,
119                              struct rpc_sock_write_state)) {
120                 return NULL;
121         }
122         subreq = async_send_send(state, ev, sock_transp->fd, data, size, 0);
123         if (subreq == NULL) {
124                 goto fail;
125         }
126         subreq->async.fn = rpc_sock_write_done;
127         subreq->async.private_data = result;
128         return result;
129  fail:
130         TALLOC_FREE(result);
131         return NULL;
132 }
133
134 static void rpc_sock_write_done(struct tevent_req *subreq)
135 {
136         struct async_req *req = talloc_get_type_abort(
137                 subreq->async.private_data, struct async_req);
138         struct rpc_sock_write_state *state = talloc_get_type_abort(
139                 req->private_data, struct rpc_sock_write_state);
140         int err;
141
142         state->sent = async_send_recv(subreq, &err);
143         if (state->sent == -1) {
144                 async_req_nterror(req, map_nt_error_from_unix(err));
145                 return;
146         }
147         async_req_done(req);
148 }
149
150 static NTSTATUS rpc_sock_write_recv(struct async_req *req, ssize_t *psent)
151 {
152         struct rpc_sock_write_state *state = talloc_get_type_abort(
153                 req->private_data, struct rpc_sock_write_state);
154         NTSTATUS status;
155
156         if (async_req_is_nterror(req, &status)) {
157                 return status;
158         }
159         *psent = state->sent;
160         return NT_STATUS_OK;
161 }
162
163 NTSTATUS rpc_transport_sock_init(TALLOC_CTX *mem_ctx, int fd,
164                                  struct rpc_cli_transport **presult)
165 {
166         struct rpc_cli_transport *result;
167         struct rpc_transport_sock_state *state;
168
169         result = talloc(mem_ctx, struct rpc_cli_transport);
170         if (result == NULL) {
171                 return NT_STATUS_NO_MEMORY;
172         }
173         state = talloc(result, struct rpc_transport_sock_state);
174         if (state == NULL) {
175                 TALLOC_FREE(result);
176                 return NT_STATUS_NO_MEMORY;
177         }
178         result->priv = state;
179
180         state->fd = fd;
181         talloc_set_destructor(state, rpc_transport_sock_state_destructor);
182
183         result->trans_send = NULL;
184         result->trans_recv = NULL;
185         result->write_send = rpc_sock_write_send;
186         result->write_recv = rpc_sock_write_recv;
187         result->read_send = rpc_sock_read_send;
188         result->read_recv = rpc_sock_read_recv;
189
190         *presult = result;
191         return NT_STATUS_OK;
192 }