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Diffstat (limited to 'src/core/core_api_peer_request.c')
-rw-r--r-- | src/core/core_api_peer_request.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/src/core/core_api_peer_request.c b/src/core/core_api_peer_request.c deleted file mode 100644 index 0f13f15f9..000000000 --- a/src/core/core_api_peer_request.c +++ /dev/null | |||
@@ -1,179 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | (C) 2009, 2010 Christian Grothoff (and other contributing authors) | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file core/core_api_peer_request.c | ||
23 | * @brief implementation of the peer_request functions | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include "gnunet_core_service.h" | ||
28 | #include "core.h" | ||
29 | |||
30 | |||
31 | /** | ||
32 | * Handle for a request to the core to connect to | ||
33 | * a particular peer. Can be used to cancel the request | ||
34 | * (before the 'cont'inuation is called). | ||
35 | */ | ||
36 | struct GNUNET_CORE_PeerRequestHandle | ||
37 | { | ||
38 | |||
39 | /** | ||
40 | * Our connection to the service. | ||
41 | */ | ||
42 | struct GNUNET_CLIENT_Connection *client; | ||
43 | |||
44 | |||
45 | /** | ||
46 | * Function to call once done. | ||
47 | */ | ||
48 | GNUNET_SCHEDULER_Task cont; | ||
49 | |||
50 | /** | ||
51 | * Closure for 'cont'. | ||
52 | */ | ||
53 | void *cont_cls; | ||
54 | |||
55 | /** | ||
56 | * When to time out. | ||
57 | */ | ||
58 | struct GNUNET_TIME_Absolute timeout; | ||
59 | |||
60 | /** | ||
61 | * Identity of the peer to connect to. | ||
62 | */ | ||
63 | struct GNUNET_PeerIdentity peer; | ||
64 | |||
65 | /** | ||
66 | * Message type to use. | ||
67 | */ | ||
68 | uint16_t type; | ||
69 | }; | ||
70 | |||
71 | |||
72 | /** | ||
73 | * Transmit the request to the core service. | ||
74 | * | ||
75 | * @param cls our 'struct GNUNET_CORE_PeerRequestHandle' | ||
76 | * @param size number of bytes available in buf | ||
77 | * @param buf where the callee should write the message | ||
78 | * @return number of bytes written to buf | ||
79 | */ | ||
80 | static size_t | ||
81 | send_request (void *cls, | ||
82 | size_t size, | ||
83 | void *buf) | ||
84 | { | ||
85 | struct GNUNET_CORE_PeerRequestHandle * prh = cls; | ||
86 | struct ConnectMessage msg; | ||
87 | |||
88 | if (buf == NULL) | ||
89 | { | ||
90 | if (prh->cont != NULL) | ||
91 | GNUNET_SCHEDULER_add_continuation (prh->cont, | ||
92 | prh->cont_cls, | ||
93 | GNUNET_SCHEDULER_REASON_TIMEOUT); | ||
94 | GNUNET_CLIENT_disconnect (prh->client, GNUNET_NO); | ||
95 | GNUNET_free (prh); | ||
96 | return 0; | ||
97 | } | ||
98 | GNUNET_assert (size >= sizeof (struct ConnectMessage)); | ||
99 | msg.header.type = htons (prh->type); | ||
100 | msg.header.size = htons (sizeof (struct ConnectMessage)); | ||
101 | msg.reserved = htonl (0); | ||
102 | msg.timeout = GNUNET_TIME_relative_hton (GNUNET_TIME_absolute_get_remaining (prh->timeout)); | ||
103 | msg.peer = prh->peer; | ||
104 | memcpy (buf, &msg, sizeof (msg)); | ||
105 | if (prh->cont != NULL) | ||
106 | { | ||
107 | GNUNET_SCHEDULER_add_continuation (prh->cont, | ||
108 | prh->cont_cls, | ||
109 | GNUNET_SCHEDULER_REASON_PREREQ_DONE); | ||
110 | } | ||
111 | GNUNET_CLIENT_disconnect (prh->client, GNUNET_YES); | ||
112 | GNUNET_free (prh); | ||
113 | return sizeof (msg); | ||
114 | } | ||
115 | |||
116 | |||
117 | /** | ||
118 | * Request that the core should try to connect to a particular peer. | ||
119 | * Once the request has been transmitted to the core, the continuation | ||
120 | * function will be called. Note that this does NOT mean that a | ||
121 | * connection was successfully established -- it only means that the | ||
122 | * core will now try. Successful establishment of the connection | ||
123 | * will be signalled to the 'connects' callback argument of | ||
124 | * 'GNUNET_CORE_connect' only. If the core service does not respond | ||
125 | * to our connection attempt within the given time frame, 'cont' will | ||
126 | * be called with the TIMEOUT reason code. | ||
127 | * | ||
128 | * @param cfg configuration to use | ||
129 | * @param timeout how long to try to talk to core | ||
130 | * @param peer who should we connect to | ||
131 | * @param cont function to call once the request has been completed (or timed out) | ||
132 | * @param cont_cls closure for cont | ||
133 | * @return NULL on error (cont will not be called), otherwise handle for cancellation | ||
134 | */ | ||
135 | struct GNUNET_CORE_PeerRequestHandle * | ||
136 | GNUNET_CORE_peer_request_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, | ||
137 | struct GNUNET_TIME_Relative timeout, | ||
138 | const struct GNUNET_PeerIdentity * peer, | ||
139 | GNUNET_SCHEDULER_Task cont, | ||
140 | void *cont_cls) | ||
141 | { | ||
142 | struct GNUNET_CORE_PeerRequestHandle *ret; | ||
143 | struct GNUNET_CLIENT_Connection *client; | ||
144 | |||
145 | client = GNUNET_CLIENT_connect ("core", cfg); | ||
146 | if (client == NULL) | ||
147 | return NULL; | ||
148 | ret = GNUNET_malloc (sizeof (struct GNUNET_CORE_PeerRequestHandle)); | ||
149 | ret->client = client; | ||
150 | ret->cont = cont; | ||
151 | ret->cont_cls = cont_cls; | ||
152 | ret->peer = *peer; | ||
153 | ret->type = GNUNET_MESSAGE_TYPE_CORE_REQUEST_CONNECT; | ||
154 | ret->timeout = GNUNET_TIME_relative_to_absolute (timeout); | ||
155 | GNUNET_CLIENT_notify_transmit_ready (client, | ||
156 | sizeof (struct ConnectMessage), | ||
157 | timeout, | ||
158 | GNUNET_YES, | ||
159 | &send_request, | ||
160 | ret); | ||
161 | return ret; | ||
162 | } | ||
163 | |||
164 | |||
165 | /** | ||
166 | * Cancel a pending request to connect to a particular peer. Must not | ||
167 | * be called after the 'cont' function was invoked. | ||
168 | * | ||
169 | * @param req request handle that was returned for the original request | ||
170 | */ | ||
171 | void | ||
172 | GNUNET_CORE_peer_request_connect_cancel (struct GNUNET_CORE_PeerRequestHandle *req) | ||
173 | { | ||
174 | GNUNET_CLIENT_disconnect (req->client, GNUNET_NO); | ||
175 | GNUNET_free (req); | ||
176 | } | ||
177 | |||
178 | |||
179 | /* end of core_api_peer_request.c */ | ||