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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:29:04 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:29:04 -0800
commite54eebbf1a908d65ee8cf80bab62821c05666d70 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /libnetutils/ifc_utils.c
parenta1e1c1b106423de09bc918502e7a51d4ffe5a4ae (diff)
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auto import from //depot/cupcake/@135843
Diffstat (limited to 'libnetutils/ifc_utils.c')
-rw-r--r--libnetutils/ifc_utils.c428
1 files changed, 0 insertions, 428 deletions
diff --git a/libnetutils/ifc_utils.c b/libnetutils/ifc_utils.c
deleted file mode 100644
index 88635d9..0000000
--- a/libnetutils/ifc_utils.c
+++ /dev/null
@@ -1,428 +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 <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-
-#include <sys/socket.h>
-#include <sys/select.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <linux/if.h>
-#include <linux/sockios.h>
-#include <linux/route.h>
-#include <linux/wireless.h>
-
-#ifdef ANDROID
-#define LOG_TAG "NetUtils"
-#include <cutils/log.h>
-#include <cutils/properties.h>
-#else
-#include <stdio.h>
-#include <string.h>
-#define LOGD printf
-#define LOGW printf
-#endif
-
-static int ifc_ctl_sock = -1;
-void printerr(char *fmt, ...);
-
-static const char *ipaddr_to_string(uint32_t addr)
-{
- struct in_addr in_addr;
-
- in_addr.s_addr = addr;
- return inet_ntoa(in_addr);
-}
-
-int ifc_init(void)
-{
- if (ifc_ctl_sock == -1) {
- ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
- if (ifc_ctl_sock < 0) {
- printerr("socket() failed: %s\n", strerror(errno));
- }
- }
- return ifc_ctl_sock < 0 ? -1 : 0;
-}
-
-void ifc_close(void)
-{
- if (ifc_ctl_sock != -1) {
- (void)close(ifc_ctl_sock);
- ifc_ctl_sock = -1;
- }
-}
-
-static void ifc_init_ifr(const char *name, struct ifreq *ifr)
-{
- memset(ifr, 0, sizeof(struct ifreq));
- strncpy(ifr->ifr_name, name, IFNAMSIZ);
- ifr->ifr_name[IFNAMSIZ - 1] = 0;
-}
-
-int ifc_get_hwaddr(const char *name, void *ptr)
-{
- int r;
- struct ifreq ifr;
- ifc_init_ifr(name, &ifr);
-
- r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr);
- if(r < 0) return -1;
-
- memcpy(ptr, &ifr.ifr_hwaddr.sa_data, 6);
- return 0;
-}
-
-int ifc_get_ifindex(const char *name, int *if_indexp)
-{
- int r;
- struct ifreq ifr;
- ifc_init_ifr(name, &ifr);
-
- r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr);
- if(r < 0) return -1;
-
- *if_indexp = ifr.ifr_ifindex;
- return 0;
-}
-
-static int ifc_set_flags(const char *name, unsigned set, unsigned clr)
-{
- struct ifreq ifr;
- ifc_init_ifr(name, &ifr);
-
- if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1;
- ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set;
- return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr);
-}
-
-int ifc_up(const char *name)
-{
- return ifc_set_flags(name, IFF_UP, 0);
-}
-
-int ifc_down(const char *name)
-{
- return ifc_set_flags(name, 0, IFF_UP);
-}
-
-static void init_sockaddr_in(struct sockaddr *sa, in_addr_t addr)
-{
- struct sockaddr_in *sin = (struct sockaddr_in *) sa;
- sin->sin_family = AF_INET;
- sin->sin_port = 0;
- sin->sin_addr.s_addr = addr;
-}
-
-int ifc_set_addr(const char *name, in_addr_t addr)
-{
- struct ifreq ifr;
-
- ifc_init_ifr(name, &ifr);
- init_sockaddr_in(&ifr.ifr_addr, addr);
-
- return ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr);
-}
-
-int ifc_set_mask(const char *name, in_addr_t mask)
-{
- struct ifreq ifr;
-
- ifc_init_ifr(name, &ifr);
- init_sockaddr_in(&ifr.ifr_addr, mask);
-
- return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr);
-}
-
-int ifc_get_info(const char *name, in_addr_t *addr, in_addr_t *mask, unsigned *flags)
-{
- struct ifreq ifr;
- ifc_init_ifr(name, &ifr);
-
- if (addr != NULL) {
- if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) {
- *addr = 0;
- } else {
- *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr;
- }
- }
-
- if (mask != NULL) {
- if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) {
- *mask = 0;
- } else {
- *mask = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr;
- }
- }
-
- if (flags != NULL) {
- if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) {
- *flags = 0;
- } else {
- *flags = ifr.ifr_flags;
- }
- }
-
- return 0;
-}
-
-
-int ifc_create_default_route(const char *name, in_addr_t addr)
-{
- struct rtentry rt;
-
- memset(&rt, 0, sizeof(rt));
-
- rt.rt_dst.sa_family = AF_INET;
- rt.rt_flags = RTF_UP | RTF_GATEWAY;
- rt.rt_dev = (void*) name;
- init_sockaddr_in(&rt.rt_genmask, 0);
- init_sockaddr_in(&rt.rt_gateway, addr);
-
- return ioctl(ifc_ctl_sock, SIOCADDRT, &rt);
-}
-
-int ifc_add_host_route(const char *name, in_addr_t addr)
-{
- struct rtentry rt;
- int result;
-
- memset(&rt, 0, sizeof(rt));
-
- rt.rt_dst.sa_family = AF_INET;
- rt.rt_flags = RTF_UP | RTF_HOST;
- rt.rt_dev = (void*) name;
- init_sockaddr_in(&rt.rt_dst, addr);
- init_sockaddr_in(&rt.rt_genmask, 0);
- init_sockaddr_in(&rt.rt_gateway, 0);
-
- ifc_init();
- result = ioctl(ifc_ctl_sock, SIOCADDRT, &rt);
- if (result < 0 && errno == EEXIST) {
- result = 0;
- }
- ifc_close();
- return result;
-}
-
-int ifc_disable(const char *ifname)
-{
- int result;
-
- ifc_init();
- result = ifc_down(ifname);
- ifc_set_addr(ifname, 0);
- ifc_close();
- return result;
-}
-
-int ifc_reset_connections(const char *ifname)
-{
-#ifdef HAVE_ANDROID_OS
- int result;
- in_addr_t myaddr;
- struct ifreq ifr;
-
- ifc_init();
- ifc_get_info(ifname, &myaddr, NULL, NULL);
- ifc_init_ifr(ifname, &ifr);
- init_sockaddr_in(&ifr.ifr_addr, myaddr);
- result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr);
- ifc_close();
-
- return result;
-#else
- return 0;
-#endif
-}
-
-/*
- * Remove the routes associated with the named interface.
- */
-int ifc_remove_host_routes(const char *name)
-{
- char ifname[64];
- in_addr_t dest, gway, mask;
- int flags, refcnt, use, metric, mtu, win, irtt;
- struct rtentry rt;
- FILE *fp;
- struct in_addr addr;
-
- fp = fopen("/proc/net/route", "r");
- if (fp == NULL)
- return -1;
- /* Skip the header line */
- if (fscanf(fp, "%*[^\n]\n") < 0) {
- fclose(fp);
- return -1;
- }
- ifc_init();
- for (;;) {
- int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n",
- ifname, &dest, &gway, &flags, &refcnt, &use, &metric, &mask,
- &mtu, &win, &irtt);
- if (nread != 11) {
- break;
- }
- if ((flags & (RTF_UP|RTF_HOST)) != (RTF_UP|RTF_HOST)
- || strcmp(ifname, name) != 0) {
- continue;
- }
- memset(&rt, 0, sizeof(rt));
- rt.rt_dev = (void *)name;
- init_sockaddr_in(&rt.rt_dst, dest);
- init_sockaddr_in(&rt.rt_gateway, gway);
- init_sockaddr_in(&rt.rt_genmask, mask);
- addr.s_addr = dest;
- if (ioctl(ifc_ctl_sock, SIOCDELRT, &rt) < 0) {
- LOGD("failed to remove route for %s to %s: %s",
- ifname, inet_ntoa(addr), strerror(errno));
- }
- }
- fclose(fp);
- ifc_close();
- return 0;
-}
-
-/*
- * Return the address of the default gateway
- *
- * TODO: factor out common code from this and remove_host_routes()
- * so that we only scan /proc/net/route in one place.
- */
-int ifc_get_default_route(const char *ifname)
-{
- char name[64];
- in_addr_t dest, gway, mask;
- int flags, refcnt, use, metric, mtu, win, irtt;
- int result;
- FILE *fp;
-
- fp = fopen("/proc/net/route", "r");
- if (fp == NULL)
- return 0;
- /* Skip the header line */
- if (fscanf(fp, "%*[^\n]\n") < 0) {
- fclose(fp);
- return 0;
- }
- ifc_init();
- result = 0;
- for (;;) {
- int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n",
- name, &dest, &gway, &flags, &refcnt, &use, &metric, &mask,
- &mtu, &win, &irtt);
- if (nread != 11) {
- break;
- }
- if ((flags & (RTF_UP|RTF_GATEWAY)) == (RTF_UP|RTF_GATEWAY)
- && dest == 0
- && strcmp(ifname, name) == 0) {
- result = gway;
- break;
- }
- }
- fclose(fp);
- ifc_close();
- return result;
-}
-
-/*
- * Sets the specified gateway as the default route for the named interface.
- */
-int ifc_set_default_route(const char *ifname, in_addr_t gateway)
-{
- struct in_addr addr;
- int result;
-
- ifc_init();
- addr.s_addr = gateway;
- if ((result = ifc_create_default_route(ifname, gateway)) < 0) {
- LOGD("failed to add %s as default route for %s: %s",
- inet_ntoa(addr), ifname, strerror(errno));
- }
- ifc_close();
- return result;
-}
-
-/*
- * Removes the default route for the named interface.
- */
-int ifc_remove_default_route(const char *ifname)
-{
- struct rtentry rt;
- int result;
-
- ifc_init();
- memset(&rt, 0, sizeof(rt));
- rt.rt_dev = (void *)ifname;
- rt.rt_flags = RTF_UP|RTF_GATEWAY;
- init_sockaddr_in(&rt.rt_dst, 0);
- if ((result = ioctl(ifc_ctl_sock, SIOCDELRT, &rt)) < 0) {
- LOGD("failed to remove default route for %s: %s", ifname, strerror(errno));
- }
- ifc_close();
- return result;
-}
-
-int
-ifc_configure(const char *ifname,
- in_addr_t address,
- in_addr_t netmask,
- in_addr_t gateway,
- in_addr_t dns1,
- in_addr_t dns2) {
-
- char dns_prop_name[PROPERTY_KEY_MAX];
-
- ifc_init();
-
- if (ifc_up(ifname)) {
- printerr("failed to turn on interface %s: %s\n", ifname, strerror(errno));
- ifc_close();
- return -1;
- }
- if (ifc_set_addr(ifname, address)) {
- printerr("failed to set ipaddr %s: %s\n", ipaddr_to_string(address), strerror(errno));
- ifc_close();
- return -1;
- }
- if (ifc_set_mask(ifname, netmask)) {
- printerr("failed to set netmask %s: %s\n", ipaddr_to_string(netmask), strerror(errno));
- ifc_close();
- return -1;
- }
- if (ifc_create_default_route(ifname, gateway)) {
- printerr("failed to set default route %s: %s\n", ipaddr_to_string(gateway), strerror(errno));
- ifc_close();
- return -1;
- }
-
- ifc_close();
-
- snprintf(dns_prop_name, sizeof(dns_prop_name), "dhcp.%s.dns1", ifname);
- property_set(dns_prop_name, dns1 ? ipaddr_to_string(dns1) : "");
- snprintf(dns_prop_name, sizeof(dns_prop_name), "dhcp.%s.dns2", ifname);
- property_set(dns_prop_name, dns2 ? ipaddr_to_string(dns2) : "");
-
- return 0;
-}