SoftapController.cpp 6.19 KB
Newer Older
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
/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>

#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>

#include <netinet/in.h>
#include <arpa/inet.h>

29 30
#include <linux/wireless.h>

31 32 33 34 35 36 37
#define LOG_TAG "SoftapController"
#include <cutils/log.h>

#include "SoftapController.h"

SoftapController::SoftapController() {
    mPid = 0;
38 39 40 41
    mSock = socket(AF_INET, SOCK_DGRAM, 0);
    if (mSock < 0)
        LOGE("Failed to open socket");
    memset(mIface, 0, sizeof(mIface));
42 43 44
}

SoftapController::~SoftapController() {
45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
    if (mSock >= 0)
        close(mSock);
}

int SoftapController::getPrivFuncNum(char *iface, const char *fname) {
    struct iwreq wrq;
    struct iw_priv_args *priv_ptr;
    int i, ret;

    strncpy(wrq.ifr_name, iface, sizeof(wrq.ifr_name));
    wrq.u.data.pointer = mBuf;
    wrq.u.data.length = sizeof(mBuf) / sizeof(struct iw_priv_args);
    wrq.u.data.flags = 0;
    if ((ret = ioctl(mSock, SIOCGIWPRIV, &wrq)) < 0) {
        LOGE("SIOCGIPRIV failed: %d", ret);
        return ret;
    }
    priv_ptr = (struct iw_priv_args *)wrq.u.data.pointer;
    for(i=0;(i < wrq.u.data.length);i++) {
        if (strcmp(priv_ptr[i].name, fname) == 0)
            return priv_ptr[i].cmd;
    }
    return -1;
68 69 70
}

int SoftapController::startSoftap() {
71
    struct iwreq wrq;
72
    pid_t pid = 1;
73
    int fnum, ret = 0;
74 75 76 77 78 79 80

    LOGD("Softap start");
    if (mPid) {
        LOGE("Softap already started");
        errno = EBUSY;
        return -1;
    }
81 82 83 84
    if (mSock < 0) {
        LOGE("Failed to open socket");
        return -1;
    }
85 86 87 88 89 90
#if 0
   if ((pid = fork()) < 0) {
        LOGE("fork failed (%s)", strerror(errno));
        return -1;
    }
#endif
91
    /* system("iwpriv wl0.1 AP_BSS_START"); */
92
    if (!pid) {
93 94
        /* start hostapd */
        return ret;
95
    } else {
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112
        fnum = getPrivFuncNum(mIface, "AP_BSS_START");
        if (fnum < 0) {
            LOGE("Softap start - function not supported");
            return -1;
        }
        strncpy(wrq.ifr_name, mIface, sizeof(wrq.ifr_name));
        wrq.u.data.length = 0;
        wrq.u.data.pointer = mBuf;
        wrq.u.data.flags = 0;
        ret = ioctl(mSock, fnum, &wrq);
        if (ret) {
            LOGE("Softap start - failed: %d", ret);
        }
        else {
           mPid = pid;
           LOGD("Softap start - Ok");
        }
113
    }
114
    return ret;
115 116 117 118

}

int SoftapController::stopSoftap() {
119 120 121
    struct iwreq wrq;
    int fnum, ret;

122 123 124 125
    if (mPid == 0) {
        LOGE("Softap already stopped");
        return 0;
    }
126
    if (mSock < 0) {
127
        LOGE("Softap stop - failed to open socket");
128 129 130 131 132 133 134 135 136 137 138 139
        return -1;
    }
    fnum = getPrivFuncNum(mIface, "WL_AP_STOP");
    if (fnum < 0) {
        LOGE("Softap stop - function not supported");
        return -1;
    }
    strncpy(wrq.ifr_name, mIface, sizeof(wrq.ifr_name));
    wrq.u.data.length = 0;
    wrq.u.data.pointer = mBuf;
    wrq.u.data.flags = 0;
    ret = ioctl(mSock, fnum, &wrq);
140 141 142 143 144 145
#if 0
    LOGD("Stopping Softap service");
    kill(mPid, SIGTERM);
    waitpid(mPid, NULL, 0);
#endif
    mPid = 0;
146 147
    LOGD("Softap service stopped: %d", ret);
    return ret;
148 149 150 151 152 153
}

bool SoftapController::isSoftapStarted() {
    return (mPid != 0 ? true : false);
}

154 155 156 157 158 159 160 161 162 163 164 165
int SoftapController::addParam(int pos, const char *cmd, const char *arg)
{
    if (pos < 0)
        return pos;
    if ((unsigned)(pos + strlen(cmd) + strlen(arg) + 1) >= sizeof(mBuf)) {
        LOGE("Command line is too big");
        return -1;
    }
    pos += sprintf(&mBuf[pos], "%s=%s,", cmd, arg);
    return pos;
}

166 167 168 169
/*
 * Arguments:
 *      argv[2] - wlan interface
 *      argv[3] - softap interface
170 171 172 173 174 175
 *      argv[4] - SSID
 *	argv[5] - Security
 *	argv[6] - Key
 *	argv[7] - Channel
 *	argv[8] - Preamble
 *	argv[9] - Max SCB
176
 */
177
int SoftapController::setSoftap(int argc, char *argv[]) {
178
    struct iwreq wrq;
179
    int fnum, ret, i = 0;
180 181

    if (mSock < 0) {
182
        LOGE("Softap set - failed to open socket");
183 184 185
        return -1;
    }
    if (argc < 4) {
186
        LOGE("Softap set - missing arguments");
187 188 189 190 191 192 193 194 195 196 197
        return -1;
    }

    fnum = getPrivFuncNum(argv[2], "WL_AP_CFG");
    if (fnum < 0) {
        LOGE("Softap set - function not supported");
        return -1;
    }

    strncpy(mIface, argv[3], sizeof(mIface));
    strncpy(wrq.ifr_name, argv[2], sizeof(wrq.ifr_name));
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233

    /* Create command line */
    i = addParam(i, "ASCII_CMD", "AP_CFG");
    if (argc > 4) {
        i = addParam(i, "SSID", argv[4]);
    } else {
        i = addParam(i, "SSID", "AndroidAP");
    }
    if (argc > 5) {
        i = addParam(i, "SEC", argv[5]);
    } else {
        i = addParam(i, "SEC", "open");
    }
    if (argc > 6) {
        i = addParam(i, "KEY", argv[6]);
    } else {
        i = addParam(i, "KEY", "12345678");
    }
    if (argc > 7) {
        i = addParam(i, "CHANNEL", argv[7]);
    } else {
        i = addParam(i, "CHANNEL", "6");
    }
    if (argc > 8) {
        i = addParam(i, "PREAMBLE", argv[8]);
    } else {
        i = addParam(i, "PREAMBLE", "0");
    }
    if (argc > 9) {
        i = addParam(i, "MAX_SCB", argv[9]);
    } else {
        i = addParam(i, "MAX_SCB", "8");
    }
    if ((i < 0) || ((unsigned)(i + 4) >= sizeof(mBuf))) {
        LOGE("Softap set - command is too big");
        return i;
234
    }
235
    sprintf(&mBuf[i], "END");
236 237 238 239 240 241 242 243 244 245 246 247 248

    wrq.u.data.length = strlen(mBuf) + 1;
    wrq.u.data.pointer = mBuf;
    wrq.u.data.flags = 0;
    /* system("iwpriv eth0 WL_AP_CFG ASCII_CMD=AP_CFG,SSID=\"AndroidAP\",SEC=\"open\",KEY=12345,CHANNEL=1,PREAMBLE=0,MAX_SCB=8,END"); */
    ret = ioctl(mSock, fnum, &wrq);
    if (ret) {
        LOGE("Softap set - failed: %d", ret);
    }
    else {
        LOGD("Softap set - Ok");
    }
    return ret;
249
}