diff options
Diffstat (limited to 'platform/android/ifaddrs_android.cpp')
| -rw-r--r-- | platform/android/ifaddrs_android.cpp | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/platform/android/ifaddrs_android.cpp b/platform/android/ifaddrs_android.cpp deleted file mode 100644 index f6d5cdbe77..0000000000 --- a/platform/android/ifaddrs_android.cpp +++ /dev/null @@ -1,230 +0,0 @@ -/* - * libjingle - * Copyright 2012, Google Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "ifaddrs_android.h" -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/utsname.h> -#include <sys/ioctl.h> -#include <netinet/in.h> -#include <net/if.h> -#include <unistd.h> -#include <errno.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> - -struct netlinkrequest { - nlmsghdr header; - ifaddrmsg msg; -}; - -namespace { -const int kMaxReadSize = 4096; -} - -static int set_ifname(struct ifaddrs* ifaddr, int interface) { - char buf[IFNAMSIZ] = {0}; - char* name = if_indextoname(interface, buf); - if (name == NULL) { - return -1; - } - ifaddr->ifa_name = new char[strlen(name) + 1]; - strncpy(ifaddr->ifa_name, name, strlen(name) + 1); - return 0; -} - -static int set_flags(struct ifaddrs* ifaddr) { - int fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd == -1) { - return -1; - } - ifreq ifr; - memset(&ifr, 0, sizeof(ifr)); - strncpy(ifr.ifr_name, ifaddr->ifa_name, IFNAMSIZ - 1); - int rc = ioctl(fd, SIOCGIFFLAGS, &ifr); - close(fd); - if (rc == -1) { - return -1; - } - ifaddr->ifa_flags = ifr.ifr_flags; - return 0; -} - -static int set_addresses(struct ifaddrs* ifaddr, ifaddrmsg* msg, void* data, - size_t len) { - if (msg->ifa_family == AF_INET) { - sockaddr_in* sa = new sockaddr_in; - sa->sin_family = AF_INET; - memcpy(&sa->sin_addr, data, len); - ifaddr->ifa_addr = reinterpret_cast<sockaddr*>(sa); - } else if (msg->ifa_family == AF_INET6) { - sockaddr_in6* sa = new sockaddr_in6; - sa->sin6_family = AF_INET6; - sa->sin6_scope_id = msg->ifa_index; - memcpy(&sa->sin6_addr, data, len); - ifaddr->ifa_addr = reinterpret_cast<sockaddr*>(sa); - } else { - return -1; - } - return 0; -} - -static int make_prefixes(struct ifaddrs* ifaddr, int family, int prefixlen) { - char* prefix = NULL; - if (family == AF_INET) { - sockaddr_in* mask = new sockaddr_in; - mask->sin_family = AF_INET; - memset(&mask->sin_addr, 0, sizeof(in_addr)); - ifaddr->ifa_netmask = reinterpret_cast<sockaddr*>(mask); - if (prefixlen > 32) { - prefixlen = 32; - } - prefix = reinterpret_cast<char*>(&mask->sin_addr); - } else if (family == AF_INET6) { - sockaddr_in6* mask = new sockaddr_in6; - mask->sin6_family = AF_INET6; - memset(&mask->sin6_addr, 0, sizeof(in6_addr)); - ifaddr->ifa_netmask = reinterpret_cast<sockaddr*>(mask); - if (prefixlen > 128) { - prefixlen = 128; - } - prefix = reinterpret_cast<char*>(&mask->sin6_addr); - } else { - return -1; - } - for (int i = 0; i < (prefixlen / 8); i++) { - *prefix++ = 0xFF; - } - char remainder = 0xff; - remainder <<= (8 - prefixlen % 8); - *prefix = remainder; - return 0; -} - -static int populate_ifaddrs(struct ifaddrs* ifaddr, ifaddrmsg* msg, void* bytes, - size_t len) { - if (set_ifname(ifaddr, msg->ifa_index) != 0) { - return -1; - } - if (set_flags(ifaddr) != 0) { - return -1; - } - if (set_addresses(ifaddr, msg, bytes, len) != 0) { - return -1; - } - if (make_prefixes(ifaddr, msg->ifa_family, msg->ifa_prefixlen) != 0) { - return -1; - } - return 0; -} - -int getifaddrs(struct ifaddrs** result) { - int fd = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); - if (fd < 0) { - return -1; - } - netlinkrequest ifaddr_request; - memset(&ifaddr_request, 0, sizeof(ifaddr_request)); - ifaddr_request.header.nlmsg_flags = NLM_F_ROOT | NLM_F_REQUEST; - ifaddr_request.header.nlmsg_type = RTM_GETADDR; - ifaddr_request.header.nlmsg_len = NLMSG_LENGTH(sizeof(ifaddrmsg)); - ssize_t count = send(fd, &ifaddr_request, ifaddr_request.header.nlmsg_len, 0); - if (static_cast<size_t>(count) != ifaddr_request.header.nlmsg_len) { - close(fd); - return -1; - } - struct ifaddrs* start = NULL; - struct ifaddrs* current = NULL; - char buf[kMaxReadSize]; - ssize_t amount_read = recv(fd, &buf, kMaxReadSize, 0); - while (amount_read > 0) { - nlmsghdr* header = reinterpret_cast<nlmsghdr*>(&buf[0]); - size_t header_size = static_cast<size_t>(amount_read); - for ( ; NLMSG_OK(header, header_size); - header = NLMSG_NEXT(header, header_size)) { - switch (header->nlmsg_type) { - case NLMSG_DONE: - // Success. Return. - *result = start; - close(fd); - return 0; - case NLMSG_ERROR: - close(fd); - freeifaddrs(start); - return -1; - case RTM_NEWADDR: { - ifaddrmsg* address_msg = - reinterpret_cast<ifaddrmsg*>(NLMSG_DATA(header)); - rtattr* rta = IFA_RTA(address_msg); - ssize_t payload_len = IFA_PAYLOAD(header); - while (RTA_OK(rta, payload_len)) { - if (rta->rta_type == IFA_ADDRESS) { - int family = address_msg->ifa_family; - if (family == AF_INET || family == AF_INET6) { - ifaddrs* newest = new ifaddrs; - memset(newest, 0, sizeof(ifaddrs)); - if (current) { - current->ifa_next = newest; - } else { - start = newest; - } - if (populate_ifaddrs(newest, address_msg, RTA_DATA(rta), - RTA_PAYLOAD(rta)) != 0) { - freeifaddrs(start); - *result = NULL; - return -1; - } - current = newest; - } - } - rta = RTA_NEXT(rta, payload_len); - } - break; - } - } - } - amount_read = recv(fd, &buf, kMaxReadSize, 0); - } - close(fd); - freeifaddrs(start); - return -1; -} - -void freeifaddrs(struct ifaddrs* addrs) { - struct ifaddrs* last = NULL; - struct ifaddrs* cursor = addrs; - while (cursor) { - delete[] cursor->ifa_name; - delete cursor->ifa_addr; - delete cursor->ifa_netmask; - last = cursor; - cursor = cursor->ifa_next; - delete last; - } -} |