src/include/ifaddrs.c

	ifaddrs.c revision 4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6b
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber/*
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberCopyright (c) 2013, Kenneth MacKay
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberAll rights reserved.
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberRedistribution and use in source and binary forms, with or without modification,
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberare permitted provided that the following conditions are met:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber * Redistributions of source code must retain the above copyright notice, this
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber   list of conditions and the following disclaimer.
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber * Redistributions in binary form must reproduce the above copyright notice,
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber   this list of conditions and the following disclaimer in the documentation
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber   and/or other materials provided with the distribution.
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberDISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberLOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane GraberSOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber*/
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include "ifaddrs.h"
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <string.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <stdlib.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <errno.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <unistd.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <sys/socket.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <net/if_arp.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <netinet/in.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <linux/netlink.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber#include <linux/rtnetlink.h>
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Grabertypedef struct NetlinkList
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct NetlinkList *m_next;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct nlmsghdr *m_data;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    unsigned int m_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber} NetlinkList;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic int netlink_socket(void)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    int l_socket = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(l_socket < 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct sockaddr_nl l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(&l_addr, 0, sizeof(l_addr));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_addr.nl_family = AF_NETLINK;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(bind(l_socket, (struct sockaddr *)&l_addr, sizeof(l_addr)) < 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        close(l_socket);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return l_socket;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic int netlink_send(int p_socket, int p_request)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char l_buffer[NLMSG_ALIGN(sizeof(struct nlmsghdr)) + NLMSG_ALIGN(sizeof(struct rtgenmsg))];
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(l_buffer, 0, sizeof(l_buffer));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct nlmsghdr *l_hdr = (struct nlmsghdr *)l_buffer;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct rtgenmsg *l_msg = (struct rtgenmsg *)NLMSG_DATA(l_hdr);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_hdr->nlmsg_len = NLMSG_LENGTH(sizeof(*l_msg));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_hdr->nlmsg_type = p_request;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_hdr->nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_hdr->nlmsg_pid = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_hdr->nlmsg_seq = p_socket;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_msg->rtgen_family = AF_UNSPEC;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct sockaddr_nl l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(&l_addr, 0, sizeof(l_addr));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_addr.nl_family = AF_NETLINK;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return (sendto(p_socket, l_hdr, l_hdr->nlmsg_len, 0, (struct sockaddr *)&l_addr, sizeof(l_addr)));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic int netlink_recv(int p_socket, void *p_buffer, size_t p_len)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct msghdr l_msg;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct iovec l_iov = { p_buffer, p_len };
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct sockaddr_nl l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(;;)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_name = (void *)&l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_namelen = sizeof(l_addr);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_iov = &l_iov;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_iovlen = 1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_control = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_controllen = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_msg.msg_flags = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        int l_result = recvmsg(p_socket, &l_msg, 0);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(l_result < 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if(errno == EINTR)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                continue;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return -2;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(l_msg.msg_flags & MSG_TRUNC)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        { // buffer was too small
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return l_result;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic struct nlmsghdr *getNetlinkResponse(int p_socket, int *p_size, int *p_done)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_size = 4096;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    void *l_buffer = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(;;)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        free(l_buffer);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_buffer = malloc(l_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        int l_read = netlink_recv(p_socket, l_buffer, l_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        *p_size = l_read;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(l_read == -2)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            free(l_buffer);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(l_read >= 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            pid_t l_pid = getpid();
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            struct nlmsghdr *l_hdr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            for(l_hdr = (struct nlmsghdr *)l_buffer; NLMSG_OK(l_hdr, (unsigned int)l_read); l_hdr = (struct nlmsghdr *)NLMSG_NEXT(l_hdr, l_read))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if((pid_t)l_hdr->nlmsg_pid != l_pid || (int)l_hdr->nlmsg_seq != p_socket)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    continue;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if(l_hdr->nlmsg_type == NLMSG_DONE)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    *p_done = 1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if(l_hdr->nlmsg_type == NLMSG_ERROR)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    free(l_buffer);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    return NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return l_buffer;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_size *= 2;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic NetlinkList *newListItem(struct nlmsghdr *p_data, unsigned int p_size)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_item = malloc(sizeof(NetlinkList));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_item->m_next = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_item->m_data = p_data;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_item->m_size = p_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return l_item;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void freeResultList(NetlinkList *p_list)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_cur;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    while(p_list)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_cur = p_list;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        p_list = p_list->m_next;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        free(l_cur->m_data);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        free(l_cur);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic NetlinkList *getResultList(int p_socket, int p_request)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(netlink_send(p_socket, p_request) < 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_list = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_end = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    int l_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    int l_done = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    while(!l_done)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        struct nlmsghdr *l_hdr = getNetlinkResponse(p_socket, &l_size, &l_done);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(!l_hdr)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        { // error
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            freeResultList(l_list);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        NetlinkList *l_item = newListItem(l_hdr, l_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(!l_list)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            l_list = l_item;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        else
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            l_end->m_next = l_item;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_end = l_item;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return l_list;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic size_t maxSize(size_t a, size_t b)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return (a > b ? a : b);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic size_t calcAddrLen(sa_family_t p_family, int p_dataSize)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    switch(p_family)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_INET:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return sizeof(struct sockaddr_in);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_INET6:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return sizeof(struct sockaddr_in6);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_PACKET:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return maxSize(sizeof(struct sockaddr_ll), offsetof(struct sockaddr_ll, sll_addr) + p_dataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            return maxSize(sizeof(struct sockaddr), offsetof(struct sockaddr, sa_data) + p_dataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void makeSockaddr(sa_family_t p_family, struct sockaddr *p_dest, void *p_data, size_t p_size)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    switch(p_family)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_INET:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            memcpy(&((struct sockaddr_in*)p_dest)->sin_addr, p_data, p_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_INET6:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            memcpy(&((struct sockaddr_in6*)p_dest)->sin6_addr, p_data, p_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        case AF_PACKET:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            memcpy(((struct sockaddr_ll*)p_dest)->sll_addr, p_data, p_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            ((struct sockaddr_ll*)p_dest)->sll_halen = p_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            memcpy(p_dest->sa_data, p_data, p_size);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    p_dest->sa_family = p_family;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void addToEnd(struct ifaddrs **p_resultList, struct ifaddrs *p_entry)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(!*p_resultList)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        *p_resultList = p_entry;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    else
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        struct ifaddrs *l_cur = *p_resultList;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        while(l_cur->ifa_next)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            l_cur = l_cur->ifa_next;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_cur->ifa_next = p_entry;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void interpretLink(struct nlmsghdr *p_hdr, struct ifaddrs **p_links, struct ifaddrs **p_resultList)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifinfomsg *l_info = (struct ifinfomsg *)NLMSG_DATA(p_hdr);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_nameSize = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_addrSize = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_dataSize = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_rtaSize = NLMSG_PAYLOAD(p_hdr, sizeof(struct ifinfomsg));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct rtattr *l_rta;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(l_rta = (struct rtattr *)(((char *)l_info) + NLMSG_ALIGN(sizeof(struct ifinfomsg))); RTA_OK(l_rta, l_rtaSize); l_rta = RTA_NEXT(l_rta, l_rtaSize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        size_t l_rtaDataSize = RTA_PAYLOAD(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        switch(l_rta->rta_type)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_ADDRESS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_BROADCAST:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_addrSize += NLMSG_ALIGN(calcAddrLen(AF_PACKET, l_rtaDataSize));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_IFNAME:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_nameSize += NLMSG_ALIGN(l_rtaSize + 1);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_STATS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_dataSize += NLMSG_ALIGN(l_rtaSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifaddrs *l_entry = malloc(sizeof(struct ifaddrs) + l_nameSize + l_addrSize + l_dataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(l_entry, 0, sizeof(struct ifaddrs));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_entry->ifa_name = "";
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char *l_name = ((char *)l_entry) + sizeof(struct ifaddrs);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char *l_addr = l_name + l_nameSize;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char *l_data = l_addr + l_addrSize;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_entry->ifa_flags = l_info->ifi_flags;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_rtaSize = NLMSG_PAYLOAD(p_hdr, sizeof(struct ifinfomsg));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(l_rta = (struct rtattr *)(((char *)l_info) + NLMSG_ALIGN(sizeof(struct ifinfomsg))); RTA_OK(l_rta, l_rtaSize); l_rta = RTA_NEXT(l_rta, l_rtaSize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        void *l_rtaData = RTA_DATA(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        size_t l_rtaDataSize = RTA_PAYLOAD(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        switch(l_rta->rta_type)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_ADDRESS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_BROADCAST:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                size_t l_addrLen = calcAddrLen(AF_PACKET, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                makeSockaddr(AF_PACKET, (struct sockaddr *)l_addr, l_rtaData, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                ((struct sockaddr_ll *)l_addr)->sll_ifindex = l_info->ifi_index;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                ((struct sockaddr_ll *)l_addr)->sll_hatype = l_info->ifi_type;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if(l_rta->rta_type == IFLA_ADDRESS)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_entry->ifa_addr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                else
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_entry->ifa_broadaddr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_addr += NLMSG_ALIGN(l_addrLen);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_IFNAME:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                strncpy(l_name, l_rtaData, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_name[l_rtaDataSize] = '\0';
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_entry->ifa_name = l_name;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFLA_STATS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                memcpy(l_data, l_rtaData, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_entry->ifa_data = l_data;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    addToEnd(p_resultList, l_entry);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    p_links[l_info->ifi_index - 1] = l_entry;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void interpretAddr(struct nlmsghdr *p_hdr, struct ifaddrs **p_links, struct ifaddrs **p_resultList)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifaddrmsg *l_info = (struct ifaddrmsg *)NLMSG_DATA(p_hdr);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_nameSize = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_addrSize = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    int l_addedNetmask = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    size_t l_rtaSize = NLMSG_PAYLOAD(p_hdr, sizeof(struct ifaddrmsg));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct rtattr *l_rta;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(l_rta = (struct rtattr *)(((char *)l_info) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))); RTA_OK(l_rta, l_rtaSize); l_rta = RTA_NEXT(l_rta, l_rtaSize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        size_t l_rtaDataSize = RTA_PAYLOAD(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        if(l_info->ifa_family == AF_PACKET)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            continue;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        switch(l_rta->rta_type)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_ADDRESS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_LOCAL:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if((l_info->ifa_family == AF_INET || l_info->ifa_family == AF_INET6) && !l_addedNetmask)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                { // make room for netmask
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_addrSize += NLMSG_ALIGN(calcAddrLen(l_info->ifa_family, l_rtaDataSize));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_addedNetmask = 1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_BROADCAST:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_addrSize += NLMSG_ALIGN(calcAddrLen(l_info->ifa_family, l_rtaDataSize));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_LABEL:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_nameSize += NLMSG_ALIGN(l_rtaSize + 1);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifaddrs *l_entry = malloc(sizeof(struct ifaddrs) + l_nameSize + l_addrSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(l_entry, 0, sizeof(struct ifaddrs));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_entry->ifa_name = p_links[l_info->ifa_index - 1]->ifa_name;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char *l_name = ((char *)l_entry) + sizeof(struct ifaddrs);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    char *l_addr = l_name + l_nameSize;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_entry->ifa_flags = l_info->ifa_flags | p_links[l_info->ifa_index - 1]->ifa_flags;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    l_rtaSize = NLMSG_PAYLOAD(p_hdr, sizeof(struct ifaddrmsg));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(l_rta = (struct rtattr *)(((char *)l_info) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))); RTA_OK(l_rta, l_rtaSize); l_rta = RTA_NEXT(l_rta, l_rtaSize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        void *l_rtaData = RTA_DATA(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        size_t l_rtaDataSize = RTA_PAYLOAD(l_rta);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        switch(l_rta->rta_type)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_ADDRESS:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_BROADCAST:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_LOCAL:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                size_t l_addrLen = calcAddrLen(l_info->ifa_family, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                makeSockaddr(l_info->ifa_family, (struct sockaddr *)l_addr, l_rtaData, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if(l_info->ifa_family == AF_INET6)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    if(IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)l_rtaData) || IN6_IS_ADDR_MC_LINKLOCAL((struct in6_addr *)l_rtaData))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                        ((struct sockaddr_in6 *)l_addr)->sin6_scope_id = l_info->ifa_index;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                if(l_rta->rta_type == IFA_ADDRESS)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                { // apparently in a point-to-point network IFA_ADDRESS contains the dest address and IFA_LOCAL contains the local address
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    if(l_entry->ifa_addr)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                        l_entry->ifa_dstaddr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    else
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                        l_entry->ifa_addr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                else if(l_rta->rta_type == IFA_LOCAL)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    if(l_entry->ifa_addr)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                        l_entry->ifa_dstaddr = l_entry->ifa_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_entry->ifa_addr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                else
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                    l_entry->ifa_broadaddr = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_addr += NLMSG_ALIGN(l_addrLen);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            case IFA_LABEL:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                strncpy(l_name, l_rtaData, l_rtaDataSize);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_name[l_rtaDataSize] = '\0';
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                l_entry->ifa_name = l_name;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            default:
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(l_entry->ifa_addr && (l_entry->ifa_addr->sa_family == AF_INET || l_entry->ifa_addr->sa_family == AF_INET6))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        unsigned l_maxPrefix = (l_entry->ifa_addr->sa_family == AF_INET ? 32 : 128);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        unsigned l_prefix = (l_info->ifa_prefixlen > l_maxPrefix ? l_maxPrefix : l_info->ifa_prefixlen);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        char l_mask[16] = {0};
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        unsigned i;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        for(i=0; i<(l_prefix/8); ++i)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            l_mask[i] = 0xff;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_mask[i] = 0xff << (8 - (l_prefix % 8));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        makeSockaddr(l_entry->ifa_addr->sa_family, (struct sockaddr *)l_addr, l_mask, l_maxPrefix / 8);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_entry->ifa_netmask = (struct sockaddr *)l_addr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    addToEnd(p_resultList, l_entry);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic void interpret(int p_socket, NetlinkList *p_netlinkList, struct ifaddrs **p_links, struct ifaddrs **p_resultList)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    pid_t l_pid = getpid();
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(; p_netlinkList; p_netlinkList = p_netlinkList->m_next)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        unsigned int l_nlsize = p_netlinkList->m_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        struct nlmsghdr *l_hdr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        for(l_hdr = p_netlinkList->m_data; NLMSG_OK(l_hdr, l_nlsize); l_hdr = NLMSG_NEXT(l_hdr, l_nlsize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if((pid_t)l_hdr->nlmsg_pid != l_pid || (int)l_hdr->nlmsg_seq != p_socket)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                continue;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if(l_hdr->nlmsg_type == NLMSG_DONE)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if(l_hdr->nlmsg_type == RTM_NEWLINK)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                interpretLink(l_hdr, p_links, p_resultList);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            else if(l_hdr->nlmsg_type == RTM_NEWADDR)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                interpretAddr(l_hdr, p_links, p_resultList);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberstatic unsigned countLinks(int p_socket, NetlinkList *p_netlinkList)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    unsigned l_links = 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    pid_t l_pid = getpid();
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    for(; p_netlinkList; p_netlinkList = p_netlinkList->m_next)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        unsigned int l_nlsize = p_netlinkList->m_size;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        struct nlmsghdr *l_hdr;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        for(l_hdr = p_netlinkList->m_data; NLMSG_OK(l_hdr, l_nlsize); l_hdr = NLMSG_NEXT(l_hdr, l_nlsize))
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if((pid_t)l_hdr->nlmsg_pid != l_pid || (int)l_hdr->nlmsg_seq != p_socket)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                continue;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if(l_hdr->nlmsg_type == NLMSG_DONE)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                break;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            if(l_hdr->nlmsg_type == RTM_NEWLINK)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber                ++l_links;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber            }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return l_links;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graberint getifaddrs(struct ifaddrs **ifap)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(!ifap)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    *ifap = NULL;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    int l_socket = netlink_socket();
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(l_socket < 0)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_linkResults = getResultList(l_socket, RTM_GETLINK);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(!l_linkResults)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        close(l_socket);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    NetlinkList *l_addrResults = getResultList(l_socket, RTM_GETADDR);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    if(!l_addrResults)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        close(l_socket);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        freeResultList(l_linkResults);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        return -1;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    unsigned l_numLinks = countLinks(l_socket, l_linkResults) + countLinks(l_socket, l_addrResults);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifaddrs *l_links[l_numLinks];
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    memset(l_links, 0, l_numLinks * sizeof(struct ifaddrs *));
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    interpret(l_socket, l_linkResults, l_links, ifap);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    interpret(l_socket, l_addrResults, l_links, ifap);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    freeResultList(l_linkResults);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    freeResultList(l_addrResults);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    close(l_socket);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    return 0;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Grabervoid freeifaddrs(struct ifaddrs *ifa)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber{
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    struct ifaddrs *l_cur;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    while(ifa)
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    {
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        l_cur = ifa;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        ifa = ifa->ifa_next;
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber        free(l_cur);
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber    }
4ba0d9af63fbf7e9acfa068a1fe36b3d287b9c6bStéphane Graber}