---
gdhcp/client.c | 17 ++++++-----------
gdhcp/common.c | 21 +++++++++++++++++----
gdhcp/common.h | 17 +----------------
gdhcp/server.c | 7 +++----
4 files changed, 27 insertions(+), 35 deletions(-)
diff --git a/gdhcp/client.c b/gdhcp/client.c
index cf04ced..6632c2c 100644
--- a/gdhcp/client.c
+++ b/gdhcp/client.c
@@ -1340,8 +1340,7 @@ static uint32_t get_lease(struct dhcp_packet *packet)
if (option_u8 == NULL)
return 3600;
- lease_seconds = dhcp_get_unaligned((uint32_t *) option_u8);
- lease_seconds = ntohl(lease_seconds);
+ lease_seconds = get_be32(option_u8);
/* paranoia: must not be prone to overflows */
lease_seconds &= 0x0fffffff;
if (lease_seconds < 10)
@@ -1518,16 +1517,13 @@ static char *malloc_option_value_string(uint8_t
*option, GDHCPOptionType type)
dest += sprint_nip(dest, "", option);
break;
case OPTION_U16: {
- uint16_t val_u16 = dhcp_get_unaligned(
- (uint16_t *) option);
- dest += sprintf(dest, "%u", ntohs(val_u16));
+ uint16_t val_u16 = get_be16(option);
+ dest += sprintf(dest, "%u", val_u16);
break;
}
case OPTION_U32: {
- uint32_t val_u32 = dhcp_get_unaligned(
- (uint32_t *) option);
- dest += sprintf(dest, type == OPTION_U32 ? "%lu" :
- "%ld", (unsigned long) ntohl(val_u32));
+ uint32_t val_u32 = get_be32(option);
+ dest += sprintf(dest, "%lu", (unsigned long)val_u32);
break;
}
case OPTION_STRING:
@@ -1924,8 +1920,7 @@ static gboolean listener_event(GIOChannel *channel,
GIOCondition condition,
dhcp_client->retry_times = 0;
option_u8 = dhcp_get_option(&packet, DHCP_SERVER_ID);
- dhcp_client->server_ip =
- dhcp_get_unaligned((uint32_t *) option_u8);
+ dhcp_client->server_ip = get_unaligned((uint32_t *)option_u8);
dhcp_client->requested_ip = packet.yiaddr;
dhcp_client->state = REQUESTING;
diff --git a/gdhcp/common.c b/gdhcp/common.c
index 8d5c284..f4e9625 100644
--- a/gdhcp/common.c
+++ b/gdhcp/common.c
@@ -280,11 +280,24 @@ void dhcp_add_simple_option(struct dhcp_packet *packet,
uint8_t code,
len = dhcp_option_lengths[type & OPTION_TYPE_MASK];
option[OPT_LEN] = len;
-#if __BYTE_ORDER == __BIG_ENDIAN
- data <<= 8 * (4 - len);
-#endif
+ /*
+ * Note that the data is already in network byte order.
+ */
+ switch (len) {
+ case 1:
+ option[OPT_DATA] = data;
+ break;
+ case 2:
+ put_unaligned(data, (uint16_t *)(option + OPT_DATA));
+ break;
+ case 4:
+ put_unaligned(data, (uint32_t *)(option + OPT_DATA));
+ break;
+ default:
+ printf("Invalid option len %d for code 0x%x\n", len, code);
+ return;
+ }
- dhcp_put_unaligned(data, (uint32_t *)(option + OPT_DATA));
dhcp_add_binary_option(packet, option);
return;
diff --git a/gdhcp/common.h b/gdhcp/common.h
index 13f49d8..e2bfc6c 100644
--- a/gdhcp/common.h
+++ b/gdhcp/common.h
@@ -24,24 +24,9 @@
#include <glib.h>
+#include "unaligned.h"
#include "gdhcp.h"
-#define dhcp_get_unaligned(ptr) \
-({ \
- struct __attribute__((packed)) { \
- typeof(*(ptr)) __v; \
- } *__p = (void *) (ptr); \
- __p->__v; \
-})
-
-#define dhcp_put_unaligned(val, ptr) \
-do { \
- struct __attribute__((packed)) { \
- typeof(*(ptr)) __v; \
- } *__p = (void *) (ptr); \
- __p->__v = (val); \
-} while (0)
-
#define CLIENT_PORT 68
#define SERVER_PORT 67
diff --git a/gdhcp/server.c b/gdhcp/server.c
index a342985..ff69892 100644
--- a/gdhcp/server.c
+++ b/gdhcp/server.c
@@ -664,8 +664,8 @@ static gboolean listener_event(GIOChannel *channel,
GIOCondition condition,
server_id_option = dhcp_get_option(&packet, DHCP_SERVER_ID);
if (server_id_option) {
- uint32_t server_nid = dhcp_get_unaligned(
- (uint32_t *) server_id_option);
+ uint32_t server_nid =
+ get_unaligned((uint32_t *)server_id_option);
if (server_nid != dhcp_server->server_nip)
return TRUE;
@@ -673,8 +673,7 @@ static gboolean listener_event(GIOChannel *channel,
GIOCondition condition,
request_ip_option = dhcp_get_option(&packet, DHCP_REQUESTED_IP);
if (request_ip_option)
- requested_nip = dhcp_get_unaligned(
- (uint32_t *) request_ip_option);
+ requested_nip = get_unaligned((uint32_t *)request_ip_option);
lease = find_lease_by_mac(dhcp_server, packet.chaddr);
--
1.7.11.4
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