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-rw-r--r--media/mtransport/third_party/nICEr/src/stun/ifaddrs-android.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/media/mtransport/third_party/nICEr/src/stun/ifaddrs-android.c b/media/mtransport/third_party/nICEr/src/stun/ifaddrs-android.c
new file mode 100644
index 000000000..d7d390f24
--- /dev/null
+++ b/media/mtransport/third_party/nICEr/src/stun/ifaddrs-android.c
@@ -0,0 +1,242 @@
+/*
+Copyright (c) 2011, The WebRTC project authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * 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.
+
+ * Neither the name of Google nor the names of its contributors may
+ be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"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 COPYRIGHT
+HOLDER OR CONTRIBUTORS 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.
+*/
+
+#if defined(ANDROID)
+#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 {
+ struct nlmsghdr header;
+ struct ifaddrmsg msg;
+};
+
+static 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 = malloc(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;
+ }
+ struct 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, struct ifaddrmsg* msg, void* data,
+ size_t len) {
+ if (msg->ifa_family == AF_INET) {
+ struct sockaddr_in* sa = malloc(sizeof(struct sockaddr_in));
+ memset(sa, 0, sizeof(struct sockaddr_in));
+ sa->sin_family = AF_INET;
+ memcpy(&sa->sin_addr, data, len);
+ ifaddr->ifa_addr = (struct sockaddr*)sa;
+ } else if (msg->ifa_family == AF_INET6) {
+ struct sockaddr_in6* sa = malloc(sizeof(struct sockaddr_in6));
+ memset(sa, 0, sizeof(struct sockaddr_in6));
+ sa->sin6_family = AF_INET6;
+ sa->sin6_scope_id = msg->ifa_index;
+ memcpy(&sa->sin6_addr, data, len);
+ ifaddr->ifa_addr = (struct 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) {
+ struct sockaddr_in* mask = malloc(sizeof(struct sockaddr_in));
+ memset(mask, 0, sizeof(struct sockaddr_in));
+ mask->sin_family = AF_INET;
+ memset(&mask->sin_addr, 0, sizeof(struct in_addr));
+ ifaddr->ifa_netmask = (struct sockaddr*)mask;
+ if (prefixlen > 32) {
+ prefixlen = 32;
+ }
+ prefix = (char*)&mask->sin_addr;
+ } else if (family == AF_INET6) {
+ struct sockaddr_in6* mask = malloc(sizeof(struct sockaddr_in6));
+ memset(mask, 0, sizeof(struct sockaddr_in6));
+ mask->sin6_family = AF_INET6;
+ memset(&mask->sin6_addr, 0, sizeof(struct in6_addr));
+ ifaddr->ifa_netmask = (struct sockaddr*)mask;
+ if (prefixlen > 128) {
+ prefixlen = 128;
+ }
+ prefix = (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, struct 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 android_getifaddrs(struct ifaddrs** result) {
+ int fd = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ if (fd < 0) {
+ return -1;
+ }
+
+ struct 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(struct ifaddrmsg));
+
+ ssize_t count = send(fd, &ifaddr_request, ifaddr_request.header.nlmsg_len, 0);
+ if ((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) {
+ struct nlmsghdr* header = (struct nlmsghdr*)&buf[0];
+ size_t header_size = (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);
+ android_freeifaddrs(start);
+ return -1;
+ case RTM_NEWADDR: {
+ struct ifaddrmsg* address_msg =
+ (struct ifaddrmsg*)NLMSG_DATA(header);
+ struct 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) {
+ struct ifaddrs* newest = malloc(sizeof(struct ifaddrs));
+ memset(newest, 0, sizeof(struct ifaddrs));
+ if (current) {
+ current->ifa_next = newest;
+ } else {
+ start = newest;
+ }
+ if (populate_ifaddrs(newest, address_msg, RTA_DATA(rta),
+ RTA_PAYLOAD(rta)) != 0) {
+ android_freeifaddrs(start);
+ *result = NULL;
+ return -1;
+ }
+ current = newest;
+ }
+ }
+ rta = RTA_NEXT(rta, payload_len);
+ }
+ break;
+ }
+ }
+ }
+ amount_read = recv(fd, &buf, kMaxReadSize, 0);
+ }
+ close(fd);
+ android_freeifaddrs(start);
+ return -1;
+}
+
+void android_freeifaddrs(struct ifaddrs* addrs) {
+ struct ifaddrs* last = NULL;
+ struct ifaddrs* cursor = addrs;
+ while (cursor) {
+ free(cursor->ifa_name);
+ free(cursor->ifa_addr);
+ free(cursor->ifa_netmask);
+ last = cursor;
+ cursor = cursor->ifa_next;
+ free(last);
+ }
+}
+
+#endif /* defined(ANDROID) */
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