Annotation of embedaddon/strongswan/src/libcharon/plugins/duplicheck/duplicheck_notify.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2011 Martin Willi
3: * Copyright (C) 2011 revosec AG
4: *
5: * This program is free software; you can redistribute it and/or modify it
6: * under the terms of the GNU General Public License as published by the
7: * Free Software Foundation; either version 2 of the License, or (at your
8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13: * for more details.
14: */
15:
16: #include "duplicheck_notify.h"
17: #include "duplicheck_msg.h"
18:
19: #include <sys/types.h>
20: #include <sys/stat.h>
21: #include <sys/socket.h>
22: #include <sys/un.h>
23: #include <unistd.h>
24: #include <errno.h>
25:
26: #include <daemon.h>
27: #include <threading/mutex.h>
28: #include <threading/thread.h>
29: #include <collections/linked_list.h>
30: #include <processing/jobs/callback_job.h>
31:
32:
33: typedef struct private_duplicheck_notify_t private_duplicheck_notify_t;
34:
35: /**
36: * Private data of an duplicheck_notify_t object.
37: */
38: struct private_duplicheck_notify_t {
39:
40: /**
41: * Public duplicheck_notify_t interface.
42: */
43: duplicheck_notify_t public;
44:
45: /**
46: * Mutex to lock list
47: */
48: mutex_t *mutex;
49:
50: /**
51: * List of connected clients, as stream_t
52: */
53: linked_list_t *connected;
54:
55: /**
56: * stream service accepting connections
57: */
58: stream_service_t *service;
59: };
60:
61: /**
62: * Accept duplicheck notification connections
63: */
64: static bool on_accept(private_duplicheck_notify_t *this, stream_t *stream)
65: {
66: this->mutex->lock(this->mutex);
67: this->connected->insert_last(this->connected, stream);
68: this->mutex->unlock(this->mutex);
69:
70: return TRUE;
71: }
72:
73: METHOD(duplicheck_notify_t, send_, void,
74: private_duplicheck_notify_t *this, identification_t *id)
75: {
76: enumerator_t *enumerator;
77: stream_t *stream;
78: uint16_t nlen;
79: char buf[512];
80: int len;
81:
82: len = snprintf(buf, sizeof(buf), "%Y", id);
83: if (len > 0 && len < sizeof(buf))
84: {
85: nlen = htons(len);
86:
87: this->mutex->lock(this->mutex);
88: enumerator = this->connected->create_enumerator(this->connected);
89: while (enumerator->enumerate(enumerator, &stream))
90: {
91: if (!stream->write_all(stream, &nlen, sizeof(nlen)) ||
92: !stream->write_all(stream, buf, len))
93: {
94: DBG1(DBG_CFG, "sending duplicheck notify failed: %s",
95: strerror(errno));
96: this->connected->remove_at(this->connected, enumerator);
97: stream->destroy(stream);
98: }
99: }
100: enumerator->destroy(enumerator);
101: this->mutex->unlock(this->mutex);
102: }
103: }
104:
105: METHOD(duplicheck_notify_t, destroy, void,
106: private_duplicheck_notify_t *this)
107: {
108: DESTROY_IF(this->service);
109: this->connected->destroy_offset(this->connected, offsetof(stream_t, destroy));
110: this->mutex->destroy(this->mutex);
111: free(this);
112: }
113:
114: /**
115: * See header
116: */
117: duplicheck_notify_t *duplicheck_notify_create()
118: {
119: private_duplicheck_notify_t *this;
120: char *uri;
121:
122: INIT(this,
123: .public = {
124: .send = _send_,
125: .destroy = _destroy,
126: },
127: .connected = linked_list_create(),
128: .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
129: );
130:
131: uri = lib->settings->get_str(lib->settings,
132: "%s.plugins.duplicheck.socket", "unix://" DUPLICHECK_SOCKET,
133: lib->ns);
134: this->service = lib->streams->create_service(lib->streams, uri, 3);
135: if (!this->service)
136: {
137: DBG1(DBG_CFG, "creating duplicheck socket failed");
138: destroy(this);
139: return NULL;
140: }
141: this->service->on_accept(this->service, (stream_service_cb_t)on_accept,
142: this, JOB_PRIO_CRITICAL, 1);
143:
144: return &this->public;
145: }
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