wificurse

wifi jamming tool
git clone git://git.2f30.org/wificurse.git
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commit cd6a4673b8c0d39d6328cc7070d35667e77d43d3
parent f475c4c553db9351268d3b32e65a042b110d5bce
Author: oblique <psyberbits@gmail.com>
Date:   Wed Oct 30 23:24:19 +0200

Use netlink API instead of ioctl(SIOCGIFCONF) to get the interfaces.

Diffstat:
src/wificurse.c | 97+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------
1 file changed, 83 insertions(+), 14 deletions(-)
diff --git a/src/wificurse.c b/src/wificurse.c @@ -26,7 +26,7 @@ #include <pthread.h> #include <time.h> #include <sys/time.h> -#include <sys/ioctl.h> +#include <linux/rtnetlink.h> #include "iw.h" #include "error.h" #include "console.h" @@ -215,29 +215,98 @@ static void print_usage(FILE *f) { } static int print_interfaces() { - struct ifconf ifc; - struct ifreq *ifr; + int sock, len; + struct nlmsghdr *nlm; + struct iovec iov; + struct msghdr rtnl_msg; + struct sockaddr_nl s_nl; + struct { + struct nlmsghdr nh; + struct rtgenmsg rtgm; + } req; char buf[8192]; - int i, sock; - sock = socket(AF_INET, SOCK_STREAM, 0); + printf("Network interfaces:\n"); + + /* open netlink socket */ + sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); if (sock < 0) { - perror("socket"); + perror("sock"); return 1; } - ifc.ifc_len = sizeof(buf); - ifc.ifc_buf = buf; - if (ioctl(sock, SIOCGIFCONF, &ifc) < 0) { - perror("ioctl(SIOCGIFCONF)"); + /* initialize request */ + memset(&req, 0, sizeof(req)); + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rtgm)); + req.nh.nlmsg_type = RTM_GETLINK; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; + req.nh.nlmsg_seq = 1; + req.nh.nlmsg_pid = getpid(); + req.rtgm.rtgen_family = AF_PACKET; + + memset(&s_nl, 0, sizeof(s_nl)); + s_nl.nl_family = AF_NETLINK; + + iov.iov_base = &req; + iov.iov_len = req.nh.nlmsg_len; + + memset(&rtnl_msg, 0, sizeof(rtnl_msg)); + rtnl_msg.msg_iov = &iov; + rtnl_msg.msg_iovlen = 1; + rtnl_msg.msg_name = &s_nl; + rtnl_msg.msg_namelen = sizeof(s_nl); + + /* send request */ + len = sendmsg(sock, &rtnl_msg, 0); + if (len < 0) { + perror("sendmsg"); close(sock); return 1; } - printf("Network interfaces:\n"); - ifr = ifc.ifc_req; - for (i = 0; i < ifc.ifc_len / sizeof(*ifr); i++) - printf(" %s\n", ifr[i].ifr_name); + int end = 0; + while (!end) { + iov.iov_base = buf; + iov.iov_len = sizeof(buf); + + memset(&rtnl_msg, 0, sizeof(rtnl_msg)); + rtnl_msg.msg_iov = &iov; + rtnl_msg.msg_iovlen = 1; + rtnl_msg.msg_name = &s_nl; + rtnl_msg.msg_namelen = sizeof(s_nl); + + /* receive response */ + len = recvmsg(sock, &rtnl_msg, 0); + if (len < 0) { + perror("recvmsg"); + close(sock); + return 1; + } + + /* read response */ + nlm = (struct nlmsghdr*)buf; + while (NLMSG_OK(nlm, len)) { + if (nlm->nlmsg_type == NLMSG_DONE) { + end = 1; + break; + } else if (nlm->nlmsg_type == RTM_NEWLINK) { + struct ifinfomsg *ifinfo; + struct rtattr *rta; + int iflen; + + ifinfo = NLMSG_DATA(nlm); + rta = IFLA_RTA(ifinfo); + iflen = IFLA_PAYLOAD(nlm); + + while (RTA_OK(rta, iflen)) { + if (rta->rta_type == IFLA_IFNAME) + printf(" %s\n", (char*)RTA_DATA(rta)); + rta = RTA_NEXT(rta, iflen); + } + } + nlm = NLMSG_NEXT(nlm, len); + } + } close(sock); return 0;