#include <limits.h>
#include <string.h>
-#include <pcap.h>
-
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <wtap.h>
#include <libpcap.h>
+#include "capture_ifinfo.h"
#include "capture-pcap-util.h"
#include "capture-pcap-util-int.h"
#include <netinet/in.h>
#endif
-
-/*
- * Get the data-link type for a libpcap device.
- * This works around AIX 5.x's non-standard and incompatible-with-the-
- * rest-of-the-universe libpcap.
- */
-int
-get_pcap_linktype(pcap_t *pch, const char *devname
-#ifndef _AIX
- _U_
-#endif
-)
-{
- int linktype;
-#ifdef _AIX
- const char *ifacename;
-#endif
-
- linktype = pcap_datalink(pch);
-#ifdef _AIX
-
- /*
- * The libpcap that comes with AIX 5.x uses RFC 1573 ifType values
- * rather than DLT_ values for link-layer types; the ifType values
- * for LAN devices are:
- *
- * Ethernet 6
- * 802.3 7
- * Token Ring 9
- * FDDI 15
- *
- * and the ifType value for a loopback device is 24.
- *
- * The AIX names for LAN devices begin with:
- *
- * Ethernet en
- * 802.3 et
- * Token Ring tr
- * FDDI fi
- *
- * and the AIX names for loopback devices begin with "lo".
- *
- * (The difference between "Ethernet" and "802.3" is presumably
- * whether packets have an Ethernet header, with a packet type,
- * or an 802.3 header, with a packet length, followed by an 802.2
- * header and possibly a SNAP header.)
- *
- * If the device name matches "linktype" interpreted as an ifType
- * value, rather than as a DLT_ value, we will assume this is AIX's
- * non-standard, incompatible libpcap, rather than a standard libpcap,
- * and will map the link-layer type to the standard DLT_ value for
- * that link-layer type, as that's what the rest of Wireshark expects.
- *
- * (This means the capture files won't be readable by a tcpdump
- * linked with AIX's non-standard libpcap, but so it goes. They
- * *will* be readable by standard versions of tcpdump, Wireshark,
- * and so on.)
- *
- * XXX - if we conclude we're using AIX libpcap, should we also
- * set a flag to cause us to assume the time stamps are in
- * seconds-and-nanoseconds form, and to convert them to
- * seconds-and-microseconds form before processing them and
- * writing them out?
- */
-
- /*
- * Find the last component of the device name, which is the
- * interface name.
- */
- ifacename = strchr(devname, '/');
- if (ifacename == NULL)
- ifacename = devname;
-
- /* See if it matches any of the LAN device names. */
- if (strncmp(ifacename, "en", 2) == 0) {
- if (linktype == 6) {
- /*
- * That's the RFC 1573 value for Ethernet; map it
- * to DLT_EN10MB.
- */
- linktype = 1;
- }
- } else if (strncmp(ifacename, "et", 2) == 0) {
- if (linktype == 7) {
- /*
- * That's the RFC 1573 value for 802.3; map it to
- * DLT_EN10MB.
- * (libpcap, tcpdump, Wireshark, etc. don't care if
- * it's Ethernet or 802.3.)
- */
- linktype = 1;
- }
- } else if (strncmp(ifacename, "tr", 2) == 0) {
- if (linktype == 9) {
- /*
- * That's the RFC 1573 value for 802.5 (Token Ring);
- * map it to DLT_IEEE802, which is what's used for
- * Token Ring.
- */
- linktype = 6;
- }
- } else if (strncmp(ifacename, "fi", 2) == 0) {
- if (linktype == 15) {
- /*
- * That's the RFC 1573 value for FDDI; map it to
- * DLT_FDDI.
- */
- linktype = 10;
- }
- } else if (strncmp(ifacename, "lo", 2) == 0) {
- if (linktype == 24) {
- /*
- * That's the RFC 1573 value for "software loopback"
- * devices; map it to DLT_NULL, which is what's used
- * for loopback devices on BSD.
- */
- linktype = 0;
- }
- }
-#endif
-
- return linktype;
-}
-
if_info_t *
if_info_new(char *name, char *description)
{
if_info_t *if_info;
- if_info = g_malloc(sizeof (if_info_t));
+ if_info = (if_info_t *)g_malloc(sizeof (if_info_t));
if_info->name = g_strdup(name);
if (description == NULL)
if_info->description = NULL;
else
if_info->description = g_strdup(description);
- if_info->ip_addr = NULL;
+ if_info->addrs = NULL;
if_info->loopback = FALSE;
return if_info;
}
void
if_info_add_address(if_info_t *if_info, struct sockaddr *addr)
{
- if_addr_t *ip_addr;
+ if_addr_t *if_addr;
struct sockaddr_in *ai;
#ifdef INET6
struct sockaddr_in6 *ai6;
switch (addr->sa_family) {
case AF_INET:
- ai = (struct sockaddr_in *)addr;
- ip_addr = g_malloc(sizeof(*ip_addr));
- ip_addr->type = AT_IPv4;
- ip_addr->ip_addr.ip4_addr =
+ ai = (struct sockaddr_in *)(void *)addr;
+ if_addr = (if_addr_t *)g_malloc(sizeof(*if_addr));
+ if_addr->ifat_type = IF_AT_IPv4;
+ if_addr->addr.ip4_addr =
*((guint32 *)&(ai->sin_addr.s_addr));
- if_info->ip_addr = g_slist_append(if_info->ip_addr, ip_addr);
+ if_info->addrs = g_slist_append(if_info->addrs, if_addr);
break;
#ifdef INET6
case AF_INET6:
- ai6 = (struct sockaddr_in6 *)addr;
- ip_addr = g_malloc(sizeof(*ip_addr));
- ip_addr->type = AT_IPv6;
- memcpy((void *)&ip_addr->ip_addr.ip6_addr,
+ ai6 = (struct sockaddr_in6 *)(void *)addr;
+ if_addr = (if_addr_t *)g_malloc(sizeof(*if_addr));
+ if_addr->ifat_type = IF_AT_IPv6;
+ memcpy((void *)&if_addr->addr.ip6_addr,
(void *)&ai6->sin6_addr.s6_addr,
- sizeof ip_addr->ip_addr.ip6_addr);
- if_info->ip_addr = g_slist_append(if_info->ip_addr, ip_addr);
+ sizeof if_addr->addr.ip6_addr);
+ if_info->addrs = g_slist_append(if_info->addrs, if_addr);
break;
#endif
}
static void
free_if_cb(gpointer data, gpointer user_data _U_)
{
- if_info_t *if_info = data;
+ if_info_t *if_info = (if_info_t *)data;
g_free(if_info->name);
g_free(if_info->description);
- g_slist_foreach(if_info->ip_addr, free_if_info_addr_cb, NULL);
- g_slist_free(if_info->ip_addr);
+ g_slist_foreach(if_info->addrs, free_if_info_addr_cb, NULL);
+ g_slist_free(if_info->addrs);
g_free(if_info);
}
#endif /* !defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) || !defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION) */
-/*
- * Get the data-link types available for a libpcap device.
- */
-static data_link_info_t *
-create_data_link_info(int dlt)
-{
- data_link_info_t *data_link_info;
- const char *text;
-
- data_link_info = g_malloc(sizeof (data_link_info_t));
- data_link_info->dlt = dlt;
- text = pcap_datalink_val_to_name(dlt);
- if (text != NULL)
- data_link_info->name = g_strdup(text);
- else
- data_link_info->name = g_strdup_printf("DLT %d", dlt);
- text = pcap_datalink_val_to_description(dlt);
- if (text != NULL)
- data_link_info->description = g_strdup(text);
- else
- data_link_info->description = NULL;
- return data_link_info;
-}
-
-GList *
-get_pcap_linktype_list(const char *devname, char **err_str)
-{
- GList *linktype_list = NULL;
- pcap_t *pch;
- int deflt;
- char errbuf[PCAP_ERRBUF_SIZE];
-#ifdef HAVE_PCAP_LIST_DATALINKS
- int *linktypes;
- int i, nlt;
-#endif
- data_link_info_t *data_link_info;
-
-#ifdef HAVE_PCAP_OPEN
- pch = pcap_open(devname, MIN_PACKET_SIZE, 0, 0, NULL, errbuf);
-#else
- pch = pcap_open_live(devname, MIN_PACKET_SIZE, 0, 0, errbuf);
-#endif
- if (pch == NULL) {
- if (err_str != NULL)
- *err_str = g_strdup(errbuf);
- return NULL;
- }
- deflt = get_pcap_linktype(pch, devname);
-#ifdef HAVE_PCAP_LIST_DATALINKS
- nlt = pcap_list_datalinks(pch, &linktypes);
- if (nlt == 0 || linktypes == NULL) {
- pcap_close(pch);
- if (err_str != NULL)
- *err_str = NULL; /* an empty list doesn't mean an error */
- return NULL;
- }
- for (i = 0; i < nlt; i++) {
- data_link_info = create_data_link_info(linktypes[i]);
-
- /*
- * XXX - for 802.11, make the most detailed 802.11
- * version the default, rather than the one the
- * device has as the default?
- */
- if (linktypes[i] == deflt)
- linktype_list = g_list_prepend(linktype_list,
- data_link_info);
- else
- linktype_list = g_list_append(linktype_list,
- data_link_info);
- }
-#ifdef HAVE_PCAP_FREE_DATALINKS
- pcap_free_datalinks(linktypes);
-#else
- /*
- * In Windows, there's no guarantee that if you have a library
- * built with one version of the MSVC++ run-time library, and
- * it returns a pointer to allocated data, you can free that
- * data from a program linked with another version of the
- * MSVC++ run-time library.
- *
- * This is not an issue on UN*X.
- *
- * See the mail threads starting at
- *
- * http://www.winpcap.org/pipermail/winpcap-users/2006-September/001421.html
- *
- * and
- *
- * http://www.winpcap.org/pipermail/winpcap-users/2008-May/002498.html
- */
-#ifndef _WIN32
- free(linktypes);
-#endif /* _WIN32 */
-#endif /* HAVE_PCAP_FREE_DATALINKS */
-#else /* HAVE_PCAP_LIST_DATALINKS */
- data_link_info = create_data_link_info(deflt);
- linktype_list = g_list_append(linktype_list, data_link_info);
-#endif /* HAVE_PCAP_LIST_DATALINKS */
-
- pcap_close(pch);
- return linktype_list;
-}
-
static void
free_linktype_cb(gpointer data, gpointer user_data _U_)
{
- data_link_info_t *linktype_info = data;
+ data_link_info_t *linktype_info = (data_link_info_t *)data;
g_free(linktype_info->name);
g_free(linktype_info->description);
}
void
-free_pcap_linktype_list(GList *linktype_list)
+free_if_capabilities(if_capabilities_t *caps)
{
- g_list_foreach(linktype_list, free_linktype_cb, NULL);
- g_list_free(linktype_list);
-}
-
-/* Set the data link type on a pcap. */
-const char *
-set_pcap_linktype(pcap_t *pch, char *devname
-#ifdef HAVE_PCAP_SET_DATALINK
- _U_
-#endif
- , int dlt)
-{
-#ifdef HAVE_PCAP_SET_DATALINK
- if (pcap_set_datalink(pch, dlt) == 0)
- return NULL; /* no error */
- return pcap_geterr(pch);
-#else
- /* Let them set it to the type it is; reject any other request. */
- if (get_pcap_linktype(pch, devname) == dlt)
- return NULL; /* no error */
- return "That DLT isn't one of the DLTs supported by this device";
-#endif
+ g_list_foreach(caps->data_link_types, free_linktype_cb, NULL);
+ g_list_free(caps->data_link_types);
+ g_free(caps);
}
const char *
git.samba.org / obnox / wireshark / wip.git / blobdiff