1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
Unix SMB/CIFS implementation.
implements a non-blocking connect operation that is aware of the samba4
events system
Copyright (C) Andrew Tridgell 2005
Copyright (C) Volker Lendecke 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "lib/socket/socket.h"
#include "lib/events/events.h"
#include "libcli/composite/composite.h"
struct connect_state {
struct socket_context *sock;
const struct socket_address *my_address;
const struct socket_address *server_address;
uint32_t flags;
};
static void socket_connect_handler(struct tevent_context *ev,
struct tevent_fd *fde,
uint16_t flags, void *private_data);
/*
call the real socket_connect() call, and setup event handler
*/
static void socket_send_connect(struct composite_context *result)
{
struct tevent_fd *fde;
struct connect_state *state = talloc_get_type(result->private_data,
struct connect_state);
result->status = socket_connect(state->sock,
state->my_address,
state->server_address,
state->flags);
if (NT_STATUS_IS_ERR(result->status) &&
!NT_STATUS_EQUAL(result->status,
NT_STATUS_MORE_PROCESSING_REQUIRED)) {
composite_error(result, result->status);
return;
}
fde = tevent_add_fd(result->event_ctx, result,
socket_get_fd(state->sock),
TEVENT_FD_READ|TEVENT_FD_WRITE,
socket_connect_handler, result);
composite_nomem(fde, result);
}
/*
send a socket connect, potentially doing some name resolution first
*/
struct composite_context *socket_connect_send(struct socket_context *sock,
struct socket_address *my_address,
struct socket_address *server_address,
uint32_t flags,
struct tevent_context *event_ctx)
{
struct composite_context *result;
struct connect_state *state;
result = composite_create(sock, event_ctx);
if (result == NULL) return NULL;
state = talloc_zero(result, struct connect_state);
if (composite_nomem(state, result)) return result;
result->private_data = state;
state->sock = talloc_reference(state, sock);
if (composite_nomem(state->sock, result)) return result;
if (my_address) {
void *ref = talloc_reference(state, my_address);
if (composite_nomem(ref, result)) {
return result;
}
state->my_address = my_address;
}
{
void *ref = talloc_reference(state, server_address);
if (composite_nomem(ref, result)) {
return result;
}
state->server_address = server_address;
}
state->flags = flags;
set_blocking(socket_get_fd(sock), false);
socket_send_connect(result);
return result;
}
/*
handle write events on connect completion
*/
static void socket_connect_handler(struct tevent_context *ev,
struct tevent_fd *fde,
uint16_t flags, void *private_data)
{
struct composite_context *result =
talloc_get_type(private_data, struct composite_context);
struct connect_state *state = talloc_get_type(result->private_data,
struct connect_state);
result->status = socket_connect_complete(state->sock, state->flags);
if (!composite_is_ok(result)) return;
composite_done(result);
}
/*
wait for a socket_connect_send() to finish
*/
NTSTATUS socket_connect_recv(struct composite_context *result)
{
NTSTATUS status = composite_wait(result);
talloc_free(result);
return status;
}
/*
like socket_connect() but takes an event context, doing a semi-async connect
*/
NTSTATUS socket_connect_ev(struct socket_context *sock,
struct socket_address *my_address,
struct socket_address *server_address,
uint32_t flags,
struct tevent_context *ev)
{
struct composite_context *ctx;
ctx = socket_connect_send(sock, my_address,
server_address, flags, ev);
return socket_connect_recv(ctx);
}
|
