Fix alignment issue that may appear when reading 64bit integers.

diff --git a/src/lldpctl.c b/src/lldpctl.c
index 20c7884c09f53d2b043a0895f0be720cdfb76a39..8426f9a9024622692f7f81d34da105f2a3110ae5 100644 (file)
--- a/src/lldpctl.c
+++ b/src/lldpctl.c
@@ -429,17 +429,23 @@ display_med(struct lldpd_chassis *chassis, struct lldpd_port *port)
                                        u_int64_t l;
 
                                        /* Latitude and longitude */
-                                       l = (ntohll(*(u_int64_t*)port->p_med_location[i].data) &
+                                       memcpy(&l, port->p_med_location[i].data,
+                                           sizeof(u_int64_t));
+                                       l = (ntohll(l) &
                                            0x03FFFFFFFF000000ULL) >> 24;
                                        display_latitude_or_longitude(0, l);
                                        printf(", ");
-                                       l = (ntohll(*(u_int64_t*)(port->p_med_location[i].data + 5)) &
+                                       memcpy(&l, port->p_med_location[i].data + 5,
+                                           sizeof(u_int64_t));
+                                       l = (ntohll(l) &
                                            0x03FFFFFFFF000000ULL) >> 24;
                                        display_latitude_or_longitude(1, l);
 
                                        /* Altitude */
                                        printf(", ");
-                                       l = (ntohll(*(u_int64_t*)(port->p_med_location[i].data + 10)) &
+                                       memcpy(&l, port->p_med_location[i].data + 10,
+                                           sizeof(u_int64_t));
+                                       l = (ntohll(l) &
                                            0x3FFFFFFF000000ULL) >> 24;
                                        display_fixed_precision(l, 22, 8, 1);
                                        switch ((*(u_int8_t*)(port->p_med_location[i].data +
@@ -683,6 +689,7 @@ static void
 display_port(struct lldpd_port *port)
 {
        char *pid;
+       struct in_addr address;
 #ifdef ENABLE_DOT3
        int i;
 #endif
@@ -707,9 +714,10 @@ display_port(struct lldpd_port *port)
                break;
        case LLDP_PORTID_SUBTYPE_ADDR:
                if (*(u_int8_t*)port->p_id == 1) {
+                       memcpy(&address, port->p_id + 1,
+                           sizeof(struct in_addr));
                        printf(" PortID:    %s (IP)\n",
-                           inet_ntoa(*(struct in_addr*)(port->p_id +
-                                   1)));
+                           inet_ntoa(address));
                        break;
                }
        case LLDP_PORTID_SUBTYPE_PORT: