1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
21
22 #define LOG_TAG "DhcpListener"
23 #include <cutils/log.h>
24
25 #include <DhcpListener.h>
26 #include "IDhcpEventHandlers.h"
27 #include "DhcpState.h"
28 #include "DhcpEvent.h"
29 #include "Controller.h"
30
DhcpListener(Controller * c,int socket,IDhcpEventHandlers * handlers)31 DhcpListener::DhcpListener(Controller *c, int socket, IDhcpEventHandlers *handlers) :
32 SocketListener(socket, false) {
33 mHandlers = handlers;
34 mController = c;
35 }
36
~DhcpListener()37 DhcpListener::~DhcpListener() {
38 }
39
onDataAvailable(SocketClient * cli)40 bool DhcpListener::onDataAvailable(SocketClient *cli) {
41 char buffer[255];
42 int rc;
43
44 if ((rc = read(cli->getSocket(), buffer, sizeof(buffer))) < 0) {
45 LOGW("Error reading dhcp status msg (%s)", strerror(errno));
46 return true;
47 }
48
49 if (!strncmp(buffer, "STATE:", 6)) {
50 char *next = buffer;
51 char *tmp;
52 int i;
53
54 for (i = 0; i < 2; i++) {
55 if (!(tmp = strsep(&next, ":"))) {
56 LOGW("Error parsing state '%s'", buffer);
57 return true;
58 }
59 }
60
61 int st = DhcpState::parseString(tmp);
62 mHandlers->onDhcpStateChanged(mController, st);
63 } else if (!strncmp(buffer, "ADDRINFO:", 9)) {
64 char *next = buffer + 9;
65 struct in_addr ipaddr, netmask, gateway, broadcast, dns1, dns2;
66
67 if (!inet_aton(strsep(&next, ":"), &ipaddr)) {
68 LOGW("Malformatted IP specified");
69 }
70 if (!inet_aton(strsep(&next, ":"), &netmask)) {
71 LOGW("Malformatted netmask specified");
72 }
73 if (!inet_aton(strsep(&next, ":"), &broadcast)) {
74 LOGW("Malformatted broadcast specified");
75 }
76 if (!inet_aton(strsep(&next, ":"), &gateway)) {
77 LOGW("Malformatted gateway specified");
78 }
79 if (!inet_aton(strsep(&next, ":"), &dns1)) {
80 LOGW("Malformatted dns1 specified");
81 }
82 if (!inet_aton(strsep(&next, ":"), &dns2)) {
83 LOGW("Malformatted dns2 specified");
84 }
85 mHandlers->onDhcpLeaseUpdated(mController, &ipaddr, &netmask,
86 &broadcast, &gateway, &dns1, &dns2);
87
88 } else if (!strncmp(buffer, "EVENT:", 6)) {
89 char *next = buffer;
90 char *tmp;
91 int i;
92
93 for (i = 0; i < 2; i++) {
94 if (!(tmp = strsep(&next, ":"))) {
95 LOGW("Error parsing event '%s'", buffer);
96 return true;
97 }
98 }
99
100 int ev = DhcpEvent::parseString(tmp);
101 mHandlers->onDhcpEvent(mController, ev);
102
103 } else {
104 LOGW("Unknown DHCP monitor msg '%s'", buffer);
105 }
106
107 return true;
108 }
109