diff options
Diffstat (limited to 'networking/udhcp/packet.c')
| -rw-r--r-- | networking/udhcp/packet.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/networking/udhcp/packet.c b/networking/udhcp/packet.c index e861b82..e79542d 100644 --- a/networking/udhcp/packet.c +++ b/networking/udhcp/packet.c @@ -1,10 +1,6 @@ /* vi: set sw=4 ts=4: */ -#include <unistd.h> -#include <string.h> + #include <netinet/in.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <features.h> #if (__GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined _NEWLIB_VERSION #include <netpacket/packet.h> #include <net/ethernet.h> @@ -13,10 +9,8 @@ #include <linux/if_packet.h> #include <linux/if_ether.h> #endif -#include <errno.h> #include "common.h" -#include "packet.h" #include "dhcpd.h" #include "options.h" @@ -70,8 +64,9 @@ int udhcp_get_packet(struct dhcpMessage *packet, int fd) if (packet->op == BOOTREQUEST && (vendor = get_option(packet, DHCP_VENDOR))) { for (i = 0; broken_vendors[i][0]; i++) { - if (vendor[OPT_LEN - 2] == (uint8_t) strlen(broken_vendors[i]) && - !strncmp((char*)vendor, broken_vendors[i], vendor[OPT_LEN - 2])) { + if (vendor[OPT_LEN - 2] == (uint8_t)strlen(broken_vendors[i]) + && !strncmp((char*)vendor, broken_vendors[i], vendor[OPT_LEN - 2]) + ) { DEBUG("broken client (%s), forcing broadcast", broken_vendors[i]); packet->flags |= htons(BROADCAST_FLAG); @@ -114,15 +109,17 @@ uint16_t udhcp_checksum(void *addr, int count) /* Construct a ip/udp header for a packet, and specify the source and dest hardware address */ -int udhcp_raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex) +int udhcp_raw_packet(struct dhcpMessage *payload, + uint32_t source_ip, int source_port, + uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex) { int fd; int result; struct sockaddr_ll dest; struct udp_dhcp_packet packet; - if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) { + fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); + if (fd < 0) { bb_perror_msg("socket"); return -1; } @@ -157,7 +154,8 @@ int udhcp_raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source packet.ip.ttl = IPDEFTTL; packet.ip.check = udhcp_checksum(&(packet.ip), sizeof(packet.ip)); - result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0, (struct sockaddr *) &dest, sizeof(dest)); + result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0, + (struct sockaddr *) &dest, sizeof(dest)); if (result <= 0) { bb_perror_msg("sendto"); } @@ -167,14 +165,16 @@ int udhcp_raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source /* Let the kernel do all the work for packet generation */ -int udhcp_kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port, - uint32_t dest_ip, int dest_port) +int udhcp_kernel_packet(struct dhcpMessage *payload, + uint32_t source_ip, int source_port, + uint32_t dest_ip, int dest_port) { int n = 1; int fd, result; struct sockaddr_in client; - if ((fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) + fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); + if (fd < 0) return -1; if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &n, sizeof(n)) == -1) { |