auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 562 deletions

diff --git a/libnetutils/dhcpclient.c b/libnetutils/dhcpclient.c
deleted file mode 100644
index 45e392a..0000000
--- a/libnetutils/dhcpclient.c
+++ /dev/null
@@ -1,562 +0,0 @@
-/*
- * Copyright 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 <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#include <time.h>
-#include <sys/time.h>
-#include <poll.h>
-
-#include <sys/socket.h>
-#include <sys/select.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-
-#include <cutils/properties.h>
-#define LOG_TAG "DHCP"
-#include <cutils/log.h>
-
-#include <dirent.h>
-
-#include "dhcpmsg.h"
-#include "ifc_utils.h"
-#include "packet.h"
-
-#define VERBOSE 2
-
-static int verbose = 1;
-static char errmsg[2048];
-
-typedef unsigned long long msecs_t;
-#if VERBOSE
-void dump_dhcp_msg();
-#endif
-
-msecs_t get_msecs(void)
-{
-    struct timespec ts;
-
-    if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
-        return 0;
-    } else {
-        return (((msecs_t) ts.tv_sec) * ((msecs_t) 1000)) +
-            (((msecs_t) ts.tv_nsec) / ((msecs_t) 1000000));
-    }
-}
-
-void printerr(char *fmt, ...)
-{
-    va_list ap;
-
-    va_start(ap, fmt);
-    vsnprintf(errmsg, sizeof(errmsg), fmt, ap);
-    va_end(ap);
-
-    LOGD(errmsg);
-}
-
-const char *dhcp_lasterror()
-{
-    return errmsg;
-}
-
-int fatal(const char *reason)
-{
-    printerr("%s: %s\n", reason, strerror(errno));
-    return -1;
-//    exit(1);
-}
-
-const char *ipaddr(uint32_t addr)
-{
-    static char buf[32];
-
-    sprintf(buf,"%d.%d.%d.%d",
-            addr & 255,
-            ((addr >> 8) & 255),
-            ((addr >> 16) & 255),
-            (addr >> 24));
-    return buf;
-}
-
-typedef struct dhcp_info dhcp_info;
-
-struct dhcp_info {
-    uint32_t type;
-
-    uint32_t ipaddr;
-    uint32_t gateway;
-    uint32_t netmask;
-
-    uint32_t dns1;
-    uint32_t dns2;
-
-    uint32_t serveraddr;
-    uint32_t lease;
-};
-
-dhcp_info last_good_info;
-
-void get_dhcp_info(uint32_t *ipaddr, uint32_t *gateway, uint32_t *mask,
-                   uint32_t *dns1, uint32_t *dns2, uint32_t *server,
-                   uint32_t *lease)
-{
-    *ipaddr = last_good_info.ipaddr;
-    *gateway = last_good_info.gateway;
-    *mask = last_good_info.netmask;
-    *dns1 = last_good_info.dns1;
-    *dns2 = last_good_info.dns2;
-    *server = last_good_info.serveraddr;
-    *lease = last_good_info.lease;
-}
-
-static int ifc_configure(const char *ifname, dhcp_info *info)
-{
-    char dns_prop_name[PROPERTY_KEY_MAX];
-
-    if (ifc_set_addr(ifname, info->ipaddr)) {
-        printerr("failed to set ipaddr %s: %s\n", ipaddr(info->ipaddr), strerror(errno));
-        return -1;
-    }
-    if (ifc_set_mask(ifname, info->netmask)) {
-        printerr("failed to set netmask %s: %s\n", ipaddr(info->netmask), strerror(errno));
-        return -1;
-    }
-    if (ifc_create_default_route(ifname, info->gateway)) {
-        printerr("failed to set default route %s: %s\n", ipaddr(info->gateway), strerror(errno));
-        return -1;
-    }
-
-    snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", ifname);
-    property_set(dns_prop_name, info->dns1 ? ipaddr(info->dns1) : "");
-    snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", ifname);
-    property_set(dns_prop_name, info->dns2 ? ipaddr(info->dns2) : "");
-
-    last_good_info = *info;
-
-    return 0;
-}
-
-static const char *dhcp_type_to_name(uint32_t type)
-{
-    switch(type) {
-    case DHCPDISCOVER: return "discover";
-    case DHCPOFFER:    return "offer";
-    case DHCPREQUEST:  return "request";
-    case DHCPDECLINE:  return "decline";
-    case DHCPACK:      return "ack";
-    case DHCPNAK:      return "nak";
-    case DHCPRELEASE:  return "release";
-    case DHCPINFORM:   return "inform";
-    default:           return "???";
-    }
-}
-
-void dump_dhcp_info(dhcp_info *info)
-{
-    char addr[20], gway[20], mask[20];
-    LOGD("--- dhcp %s (%d) ---",
-            dhcp_type_to_name(info->type), info->type);
-    strcpy(addr, ipaddr(info->ipaddr));
-    strcpy(gway, ipaddr(info->gateway));
-    strcpy(mask, ipaddr(info->netmask));
-    LOGD("ip %s gw %s mask %s", addr, gway, mask);
-    if (info->dns1) LOGD("dns1: %s", ipaddr(info->dns1));
-    if (info->dns2) LOGD("dns2: %s", ipaddr(info->dns2));
-    LOGD("server %s, lease %d seconds",
-            ipaddr(info->serveraddr), info->lease);
-}
-
-
-int decode_dhcp_msg(dhcp_msg *msg, int len, dhcp_info *info)
-{
-    uint8_t *x;
-    unsigned int opt;
-    int optlen;
-
-    memset(info, 0, sizeof(dhcp_info));
-    if (len < (DHCP_MSG_FIXED_SIZE + 4)) return -1;
-
-    len -= (DHCP_MSG_FIXED_SIZE + 4);
-
-    if (msg->options[0] != OPT_COOKIE1) return -1;
-    if (msg->options[1] != OPT_COOKIE2) return -1;
-    if (msg->options[2] != OPT_COOKIE3) return -1;
-    if (msg->options[3] != OPT_COOKIE4) return -1;
-
-    x = msg->options + 4;
-
-    while (len > 2) {
-        opt = *x++;
-        if (opt == OPT_PAD) {
-            len--;
-            continue;
-        }
-        if (opt == OPT_END) {
-            break;
-        }
-        optlen = *x++;
-        len -= 2;
-        if (optlen > len) {
-            break;
-        }
-        switch(opt) {
-        case OPT_SUBNET_MASK:
-            if (optlen >= 4) memcpy(&info->netmask, x, 4);
-            break;
-        case OPT_GATEWAY:
-            if (optlen >= 4) memcpy(&info->gateway, x, 4);
-            break;
-        case OPT_DNS:
-            if (optlen >= 4) memcpy(&info->dns1, x + 0, 4);
-            if (optlen >= 8) memcpy(&info->dns2, x + 4, 4);
-            break;
-        case OPT_LEASE_TIME:
-            if (optlen >= 4) {
-                memcpy(&info->lease, x, 4);
-                info->lease = ntohl(info->lease);
-            }
-            break;
-        case OPT_SERVER_ID:
-            if (optlen >= 4) memcpy(&info->serveraddr, x, 4);
-            break;
-        case OPT_MESSAGE_TYPE:
-            info->type = *x;
-            break;
-        default:
-            break;
-        }
-        x += optlen;
-        len -= optlen;
-    }
-
-    info->ipaddr = msg->yiaddr;
-
-    return 0;
-}
-
-#if VERBOSE
-
-static void hex2str(char *buf, const unsigned char *array, int len)
-{
-    int i;
-    char *cp = buf;
-
-    for (i = 0; i < len; i++) {
-        cp += sprintf(cp, " %02x ", array[i]);
-    }
-}
-
-void dump_dhcp_msg(dhcp_msg *msg, int len)
-{
-    unsigned char *x;
-    unsigned int n,c;
-    int optsz;
-    const char *name;
-    char buf[2048];
-
-    LOGD("===== DHCP message:");
-    if (len < DHCP_MSG_FIXED_SIZE) {
-        LOGD("Invalid length %d, should be %d", len, DHCP_MSG_FIXED_SIZE);
-        return;
-    }
-
-    len -= DHCP_MSG_FIXED_SIZE;
-
-    if (msg->op == OP_BOOTREQUEST)
-        name = "BOOTREQUEST";
-    else if (msg->op == OP_BOOTREPLY)
-        name = "BOOTREPLY";
-    else
-        name = "????";
-    LOGD("op = %s (%d), htype = %d, hlen = %d, hops = %d",
-           name, msg->op, msg->htype, msg->hlen, msg->hops);
-    LOGD("xid = 0x%08x secs = %d, flags = 0x%04x optlen = %d",
-           ntohl(msg->xid), ntohs(msg->secs), ntohs(msg->flags), len);
-    LOGD("ciaddr = %s", ipaddr(msg->ciaddr));
-    LOGD("yiaddr = %s", ipaddr(msg->yiaddr));
-    LOGD("siaddr = %s", ipaddr(msg->siaddr));
-    LOGD("giaddr = %s", ipaddr(msg->giaddr));
-
-    c = msg->hlen > 16 ? 16 : msg->hlen;
-    hex2str(buf, msg->chaddr, c);
-    LOGD("chaddr = {%s}", buf);
-
-    for (n = 0; n < 64; n++) {
-        if ((msg->sname[n] < ' ') || (msg->sname[n] > 127)) {
-            if (msg->sname[n] == 0) break;
-            msg->sname[n] = '.';
-        }
-    }
-    msg->sname[63] = 0;
-
-    for (n = 0; n < 128; n++) {
-        if ((msg->file[n] < ' ') || (msg->file[n] > 127)) {
-            if (msg->file[n] == 0) break;
-            msg->file[n] = '.';
-        }
-    }
-    msg->file[127] = 0;
-
-    LOGD("sname = '%s'", msg->sname);
-    LOGD("file = '%s'", msg->file);
-
-    if (len < 4) return;
-    len -= 4;
-    x = msg->options + 4;
-
-    while (len > 2) {
-        if (*x == 0) {
-            x++;
-            len--;
-            continue;
-        }
-        if (*x == OPT_END) {
-            break;
-        }
-        len -= 2;
-        optsz = x[1];
-        if (optsz > len) break;
-        if (x[0] == OPT_DOMAIN_NAME || x[0] == OPT_MESSAGE) {
-            if ((unsigned int)optsz < sizeof(buf) - 1) {
-                n = optsz;
-            } else {
-                n = sizeof(buf) - 1;
-            }
-            memcpy(buf, &x[2], n);
-            buf[n] = '\0';
-        } else {
-            hex2str(buf, &x[2], optsz);
-        }
-        if (x[0] == OPT_MESSAGE_TYPE)
-            name = dhcp_type_to_name(x[2]);
-        else
-            name = NULL;
-        LOGD("op %d len %d {%s} %s", x[0], optsz, buf, name == NULL ? "" : name);
-        len -= optsz;
-        x = x + optsz + 2;
-    }
-}
-
-#endif
-
-static int send_message(int sock, int if_index, dhcp_msg  *msg, int size)
-{
-#if VERBOSE > 1
-    dump_dhcp_msg(msg, size);
-#endif
-    return send_packet(sock, if_index, msg, size, INADDR_ANY, INADDR_BROADCAST,
-                       PORT_BOOTP_CLIENT, PORT_BOOTP_SERVER);
-}
-
-static int is_valid_reply(dhcp_msg *msg, dhcp_msg *reply, int sz)
-{
-    if (sz < DHCP_MSG_FIXED_SIZE) {
-        if (verbose) LOGD("netcfg: Wrong size %d != %d\n", sz, DHCP_MSG_FIXED_SIZE);
-        return 0;
-    }
-    if (reply->op != OP_BOOTREPLY) {
-        if (verbose) LOGD("netcfg: Wrong Op %d != %d\n", reply->op, OP_BOOTREPLY);
-        return 0;
-    }
-    if (reply->xid != msg->xid) {
-        if (verbose) LOGD("netcfg: Wrong Xid 0x%x != 0x%x\n", ntohl(reply->xid),
-                          ntohl(msg->xid));
-        return 0;
-    }
-    if (reply->htype != msg->htype) {
-        if (verbose) LOGD("netcfg: Wrong Htype %d != %d\n", reply->htype, msg->htype);
-        return 0;
-    }
-    if (reply->hlen != msg->hlen) {
-        if (verbose) LOGD("netcfg: Wrong Hlen %d != %d\n", reply->hlen, msg->hlen);
-        return 0;
-    }
-    if (memcmp(msg->chaddr, reply->chaddr, msg->hlen)) {
-        if (verbose) LOGD("netcfg: Wrong chaddr %x != %x\n", *(reply->chaddr),*(msg->chaddr));
-        return 0;
-    }
-    return 1;
-}
-
-#define STATE_SELECTING  1
-#define STATE_REQUESTING 2
-
-#define TIMEOUT_INITIAL   4000
-#define TIMEOUT_MAX      32000
-
-int dhcp_init_ifc(const char *ifname)
-{
-    dhcp_msg discover_msg;
-    dhcp_msg request_msg;
-    dhcp_msg reply;
-    dhcp_msg *msg;
-    dhcp_info info;
-    int s, r, size;
-    int valid_reply;
-    uint32_t xid;
-    unsigned char hwaddr[6];
-    struct pollfd pfd;
-    unsigned int state;
-    unsigned int timeout;
-    int if_index;
-
-    xid = (uint32_t) get_msecs();
-
-    if (ifc_get_hwaddr(ifname, hwaddr)) {
-        return fatal("cannot obtain interface address");
-    }
-    if (ifc_get_ifindex(ifname, &if_index)) {
-        return fatal("cannot obtain interface index");
-    }
-
-    s = open_raw_socket(ifname, hwaddr, if_index);
-
-    timeout = TIMEOUT_INITIAL;
-    state = STATE_SELECTING;
-    info.type = 0;
-    goto transmit;
-
-    for (;;) {
-        pfd.fd = s;
-        pfd.events = POLLIN;
-        pfd.revents = 0;
-        r = poll(&pfd, 1, timeout);
-
-        if (r == 0) {
-#if VERBOSE
-            printerr("TIMEOUT\n");
-#endif
-            if (timeout >= TIMEOUT_MAX) {
-                printerr("timed out\n");
-                if ( info.type == DHCPOFFER ) {
-                    printerr("no acknowledgement from DHCP server\nconfiguring %s with offered parameters\n", ifname);
-                    return ifc_configure(ifname, &info);
-                }
-                errno = ETIME;
-                close(s);
-                return -1;
-            }
-            timeout = timeout * 2;
-
-        transmit:
-            size = 0;
-            msg = NULL;
-            switch(state) {
-            case STATE_SELECTING:
-                msg = &discover_msg;
-                size = init_dhcp_discover_msg(msg, hwaddr, xid);
-                break;
-            case STATE_REQUESTING:
-                msg = &request_msg;
-                size = init_dhcp_request_msg(msg, hwaddr, xid, info.ipaddr, info.serveraddr);
-                break;
-            default:
-                r = 0;
-            }
-            if (size != 0) {
-                r = send_message(s, if_index, msg, size);
-                if (r < 0) {
-                    printerr("error sending dhcp msg: %s\n", strerror(errno));
-                }
-            }
-            continue;
-        }
-
-        if (r < 0) {
-            if ((errno == EAGAIN) || (errno == EINTR)) {
-                continue;
-            }
-            return fatal("poll failed");
-        }
-
-        errno = 0;
-        r = receive_packet(s, &reply);
-        if (r < 0) {
-            if (errno != 0) {
-                LOGD("receive_packet failed (%d): %s", r, strerror(errno));
-                if (errno == ENETDOWN || errno == ENXIO) {
-                    return -1;
-                }
-            }
-            continue;
-        }
-
-#if VERBOSE > 1
-        dump_dhcp_msg(&reply, r);
-#endif
-        decode_dhcp_msg(&reply, r, &info);
-
-        if (state == STATE_SELECTING) {
-            valid_reply = is_valid_reply(&discover_msg, &reply, r);
-        } else {
-            valid_reply = is_valid_reply(&request_msg, &reply, r);
-        }
-        if (!valid_reply) {
-            printerr("invalid reply\n");
-            continue;
-        }
-
-        if (verbose) dump_dhcp_info(&info);
-
-        switch(state) {
-        case STATE_SELECTING:
-            if (info.type == DHCPOFFER) {
-                state = STATE_REQUESTING;
-                timeout = TIMEOUT_INITIAL;
-                xid++;
-                goto transmit;
-            }
-            break;
-        case STATE_REQUESTING:
-            if (info.type == DHCPACK) {
-                printerr("configuring %s\n", ifname);
-                close(s);
-                return ifc_configure(ifname, &info);
-            } else if (info.type == DHCPNAK) {
-                printerr("configuration request denied\n");
-                close(s);
-                return -1;
-            } else {
-                printerr("ignoring %s message in state %d\n",
-                         dhcp_type_to_name(info.type), state);
-            }
-            break;
-        }
-    }
-    close(s);
-    return 0;
-}
-
-int do_dhcp(char *iname)
-{
-    if (ifc_set_addr(iname, 0)) {
-        printerr("failed to set ip addr for %s to 0.0.0.0: %s\n", iname, strerror(errno));
-        return -1;
-    }
-
-    if (ifc_up(iname)) {
-        printerr("failed to bring up interface %s: %s\n", iname, strerror(errno));
-        return -1;
-    }
-
-    return dhcp_init_ifc(iname);
-}