diff options
Diffstat (limited to 'ipsend/sirix.c')
-rw-r--r-- | ipsend/sirix.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/ipsend/sirix.c b/ipsend/sirix.c new file mode 100644 index 0000000..0f634f7 --- /dev/null +++ b/ipsend/sirix.c @@ -0,0 +1,91 @@ +/* + * (C)opyright 1992-1998 Darren Reed. + * (C)opyright 1997 Marc Boucher. + * + * See the IPFILTER.LICENCE file for details on licencing. + * + */ +#include <stdio.h> +#include <sys/types.h> +#include <string.h> +#include <unistd.h> +#include <stdlib.h> +#include <errno.h> +#include <sys/socket.h> +#include <sys/ioctl.h> + +#include <net/if.h> +#include <net/raw.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/if_ether.h> +#include <netinet/ip_var.h> +#include "ipsend.h" +#include <netinet/udp_var.h> + +#if !defined(lint) && defined(LIBC_SCCS) +static char sirix[] = "@(#)sirix.c 1.0 10/9/97 (C)1997 Marc Boucher"; +#endif + + +int initdevice(char *device, int tout) +{ + int fd; + struct sockaddr_raw sr; + + if ((fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)) < 0) + { + perror("socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)"); + return -1; + } + + memset(&sr, 0, sizeof(sr)); + sr.sr_family = AF_RAW; + sr.sr_port = ETHERTYPE_IP; + strncpy(sr.sr_ifname, device, sizeof(sr.sr_ifname)); + if (bind(fd, &sr, sizeof(sr)) < 0) + { + perror("bind AF_RAW"); + close(fd); + return -1; + } + return fd; +} + + +/* + * output an IP packet + */ +int sendip(int fd, char *pkt, int len) +{ + struct sockaddr_raw sr; + int srlen = sizeof(sr); + struct ifreq ifr; + struct ether_header *eh = (struct ether_header *)pkt; + + if (getsockname(fd, &sr, &srlen) == -1) + { + perror("getsockname"); + return -1; + } + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, sr.sr_ifname, sizeof ifr.ifr_name); + + if (ioctl(fd, SIOCGIFADDR, &ifr) == -1) + { + perror("ioctl SIOCGIFADDR"); + return -1; + } + + memcpy(eh->ether_shost, ifr.ifr_addr.sa_data, sizeof(eh->ether_shost)); + + if (write(fd, pkt, len) == -1) + { + perror("send"); + return -1; + } + + return len; +} |