diff options
| -rw-r--r-- | lib/libnet/icmpv6.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/lib/libnet/icmpv6.c b/lib/libnet/icmpv6.c index e897588..2e0cf7c 100644 --- a/lib/libnet/icmpv6.c +++ b/lib/libnet/icmpv6.c @@ -31,9 +31,15 @@ void send_router_solicitation (int fd) { ip6_addr_t dest_addr; - uint8_t ether_packet[ETH_MTU_SIZE]; + uint8_t *ether_packet; struct packeth headers; + ether_packet = malloc(ETH_MTU_SIZE); + if (!ether_packet) { + fprintf(stderr, "send_router_solicitation: Out of memory\n"); + return; + } + headers.ip6h = (struct ip6hdr *) (ether_packet + sizeof(struct ethhdr)); headers.icmp6h = (struct icmp6hdr *) (ether_packet + sizeof(struct ethhdr) + @@ -59,6 +65,8 @@ send_router_solicitation (int fd) send_ip (fd, headers.ip6h, sizeof(struct ip6hdr) + ICMPv6_HEADER_SIZE + sizeof(struct router_solicitation)); + + free(ether_packet); } /** @@ -200,10 +208,15 @@ void send_neighbour_solicitation (int fd, ip6_addr_t *dest_ip6) { ip6_addr_t snma; - - uint8_t ether_packet[ETH_MTU_SIZE]; + uint8_t *ether_packet; struct packeth headers; + ether_packet = malloc(ETH_MTU_SIZE); + if (!ether_packet) { + fprintf(stderr, "send_neighbour_solicitation: Out of memory\n"); + return; + } + memset(ether_packet, 0, ETH_MTU_SIZE); headers.ethh = (struct ethhdr *) ether_packet; headers.ip6h = (struct ip6hdr *) (ether_packet + sizeof(struct ethhdr)); @@ -236,6 +249,8 @@ send_neighbour_solicitation (int fd, ip6_addr_t *dest_ip6) send_ip (fd, ether_packet + sizeof(struct ethhdr), sizeof(struct ip6hdr) + ICMPv6_HEADER_SIZE + sizeof(struct neighbour_solicitation)); + + free(ether_packet); } /** @@ -250,9 +265,14 @@ static void send_neighbour_advertisement (int fd, struct neighbor *target) { struct na_flags na_adv_flags; - uint8_t ether_packet[ETH_MTU_SIZE]; + uint8_t *ether_packet; struct packeth headers; + ether_packet = malloc(ETH_MTU_SIZE); + if (!ether_packet) { + fprintf(stderr, "send_neighbour_advertisement: Out of memory\n"); + return; + } headers.ip6h = (struct ip6hdr *) (ether_packet + sizeof(struct ethhdr)); headers.icmp6h = (struct icmp6hdr *) (ether_packet + @@ -301,6 +321,8 @@ send_neighbour_advertisement (int fd, struct neighbor *target) send_ip (fd, ether_packet + sizeof(struct ethhdr), sizeof(struct ip6hdr) + ICMPv6_HEADER_SIZE + sizeof(struct neighbour_advertisement)); + + free(ether_packet); } /** |