Solaris/autoconf patch from Jonathan Abbey <jonabbey@ganymeta.org>

addrs_ioctl.c

@@ -0,0 +1,93 @@
+/*
+ * addrs_ioctl.c:
+ *
+ * Provides the get_addrs_ioctl() function for use on systems that
+ * support a simple socket ioctl for acquiring low-level ethernet
+ * information about interfaces.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include "iftop.h"
+
+/*
+ * This function identifies the IP address and ethernet address for the requested
+ * interface
+ *
+ * This function returns -1 on catastrophic failure, or a bitwise OR of the
+ * following values:
+ *
+ * 1 - Was able to get the ethernet address
+ * 2 - Was able to get the IP address
+ *
+ * This function should return 3 if all information was found
+ */
+
+int
+get_addrs_ioctl(char *interface, char if_hw_addr[], struct in_addr *if_ip_addr)
+{
+  int s;
+  struct ifreq ifr = {};
+  int got_hw_addr = 0;
+  int got_ip_addr = 0;
+
+  /* -- */
+
+  s = socket(PF_INET, SOCK_DGRAM, 0); /* any sort of IP socket will do */
+
+  if (s == -1) {
+    perror("socket");
+    return -1;
+  }
+
+  fprintf(stderr,"if: %s\n", interface);
+
+  memset(if_hw_addr, 0, 6);
+  strncpy(ifr.ifr_name, interface, IFNAMSIZ);
+
+#ifdef SIOCGIFHWADDR
+  if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0) {
+    fprintf(stderr, "Error getting hardware address for interface: %s\n", interface); 
+    perror("ioctl(SIOCGIFHWADDR)");
+    close(s);
+    return -1;
+  }
+  else {
+    memcpy(if_hw_addr, ifr.ifr_hwaddr.sa_data, 6);
+    got_hw_addr = 1;
+  }
+#else
+  fprintf(stderr, "Cannot obtain hardware address on this platform\n");
+#endif
+  
+  /* Get the IP address of the interface */
+#ifdef SIOCGIFADDR
+  (*(struct sockaddr_in *) &ifr.ifr_addr).sin_family = AF_INET;
+  if (ioctl(s, SIOCGIFADDR, &ifr) < 0) {
+    fprintf(stderr, "Error getting IP address for interface: %s\n", interface); 
+    perror("ioctl(SIOCGIFADDR)");
+    close(s);
+    return -1;
+  }
+  else {
+    memcpy(if_ip_addr, &((*(struct sockaddr_in *) &ifr.ifr_addr).sin_addr), sizeof(struct in_addr));
+    got_ip_addr = 2;
+  }
+#else
+  fprintf(stderr, "Cannot obtain IP address on this platform\n");
+#endif
+  
+  close(s);
+
+  return got_hw_addr + got_ip_addr;
+}