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
31DhcpListener::DhcpListener(Controller *c, int socket, IDhcpEventHandlers *handlers) :
32              SocketListener(socket, false) {
33    mHandlers = handlers;
34    mController = c;
35}
36
37DhcpListener::~DhcpListener() {
38}
39
40bool 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