#ifdef HAVE_LIBPCAP
-#include <pcap.h>
-
#include <glib.h>
#include <stdlib.h>
+#include <stdio.h>
#include <limits.h>
#include <string.h>
#endif
#include <wtap.h>
-#include <wtap-capture.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
}
}
}
+#ifdef HAVE_PCAP_REMOTE
GList *
-get_interface_list_findalldevs(int *err, char *err_str)
+get_interface_list_findalldevs_ex(const char *source,
+ struct pcap_rmtauth *auth,
+ int *err, char **err_str)
{
GList *il = NULL;
pcap_if_t *alldevs, *dev;
if_info_t *if_info;
+ char errbuf[PCAP_ERRBUF_SIZE];
- if (pcap_findalldevs(&alldevs, err_str) == -1) {
+ if (pcap_findalldevs_ex((char *)source, auth, &alldevs, errbuf) == -1) {
*err = CANT_GET_INTERFACE_LIST;
+ if (err_str != NULL)
+ *err_str = cant_get_if_list_error_message(errbuf);
return NULL;
}
* No interfaces found.
*/
*err = NO_INTERFACES_FOUND;
+ if (err_str != NULL)
+ *err_str = NULL;
+ return NULL;
+ }
+
+ for (dev = alldevs; dev != NULL; dev = dev->next) {
+ if_info = if_info_new(dev->name, dev->description);
+ il = g_list_append(il, if_info);
+ if_info_ip(if_info, dev);
+ }
+ pcap_freealldevs(alldevs);
+
+ return il;
+}
+#endif
+
+GList *
+get_interface_list_findalldevs(int *err, char **err_str)
+{
+ GList *il = NULL;
+ pcap_if_t *alldevs, *dev;
+ if_info_t *if_info;
+ char errbuf[PCAP_ERRBUF_SIZE];
+
+ if (pcap_findalldevs(&alldevs, errbuf) == -1) {
+ *err = CANT_GET_INTERFACE_LIST;
+ if (err_str != NULL)
+ *err_str = cant_get_if_list_error_message(errbuf);
+ return NULL;
+ }
+
+ if (alldevs == NULL) {
+ /*
+ * No interfaces found.
+ */
+ *err = NO_INTERFACES_FOUND;
+ if (err_str != NULL)
+ *err_str = NULL;
return NULL;
}
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);
- if (if_info->description != NULL)
- g_free(if_info->description);
+ 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);
}
void
g_list_free(if_list);
}
-/*
- * Get the data-link types available for a libpcap device.
- */
-static data_link_info_t *
-create_data_link_info(int dlt)
+#if !defined(HAVE_PCAP_DATALINK_NAME_TO_VAL) || !defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) || !defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION)
+struct dlt_choice {
+ const char *name;
+ const char *description;
+ int dlt;
+};
+
+#define DLT_CHOICE(code, description) { #code, description, code }
+#define DLT_CHOICE_SENTINEL { NULL, NULL, 0 }
+
+static struct dlt_choice dlt_choices[] = {
+ DLT_CHOICE(DLT_NULL, "BSD loopback"),
+ DLT_CHOICE(DLT_EN10MB, "Ethernet"),
+ DLT_CHOICE(DLT_IEEE802, "Token ring"),
+ DLT_CHOICE(DLT_ARCNET, "ARCNET"),
+ DLT_CHOICE(DLT_SLIP, "SLIP"),
+ DLT_CHOICE(DLT_PPP, "PPP"),
+ DLT_CHOICE(DLT_FDDI, "FDDI"),
+ DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 IP-over-ATM"),
+ DLT_CHOICE(DLT_RAW, "Raw IP"),
+ DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"),
+ DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"),
+ DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"),
+ DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"),
+ DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"),
+ DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"),
+ DLT_CHOICE(DLT_IEEE802_11, "802.11"),
+ DLT_CHOICE(DLT_FRELAY, "Frame Relay"),
+ DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"),
+ DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"),
+ DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"),
+ DLT_CHOICE(DLT_LTALK, "Localtalk"),
+ DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"),
+ DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"),
+ DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"),
+ DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"),
+ DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus BSD radio information header"),
+ DLT_CHOICE(DLT_APPLE_IP_OVER_IEEE1394, "Apple IP-over-IEEE 1394"),
+ DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"),
+ DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"),
+ DLT_CHOICE(DLT_IEEE802_11_RADIO_AVS, "802.11 plus AVS radio information header"),
+ DLT_CHOICE_SENTINEL
+};
+
+#if !defined(HAVE_PCAP_DATALINK_NAME_TO_VAL)
+static int
+pcap_datalink_name_to_val(const char *name)
{
- data_link_info_t *data_link_info;
-#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
- const char *typename;
-#endif
- int wtap_encap;
-
- data_link_info = g_malloc(sizeof (data_link_info_t));
- data_link_info->dlt = dlt;
-#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
- typename = pcap_datalink_val_to_name(dlt);
- if (typename != NULL)
- data_link_info->name = g_strdup(typename);
- else
-#endif
- data_link_info->name = g_strdup_printf("DLT %d", dlt);
- wtap_encap = wtap_pcap_encap_to_wtap_encap(dlt);
- if (wtap_encap == WTAP_ENCAP_UNKNOWN) {
- /*
- * We don't support this in Wiretap.
- * However, we should, so you can capture on it.
- * Put in an entry for it, with no description.
- */
- data_link_info->description = NULL;
- } else {
- /*
- * If this is null, that's a bug in
- * "wtap_pcap_encap_to_wtap_encap()" - it should always
- * return a valid encapsulation type - so we assume it's
- * not null.
- */
- data_link_info->description =
- g_strdup(wtap_encap_string(wtap_encap));
+ int i;
+
+ for (i = 0; dlt_choices[i].name != NULL; i++) {
+ if (g_ascii_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1,
+ name) == 0)
+ return (dlt_choices[i].dlt);
}
- return data_link_info;
+ return (-1);
}
+#endif /* defined(HAVE_PCAP_DATALINK_NAME_TO_VAL) */
-GList *
-get_pcap_linktype_list(const char *devname, char *err_buf)
+#if !defined(HAVE_PCAP_DATALINK_VAL_TO_NAME)
+static const char *
+pcap_datalink_val_to_name(int dlt)
{
- GList *linktype_list = NULL;
- pcap_t *pch;
- int deflt;
-#ifdef HAVE_PCAP_SET_DATALINK
- int *linktypes;
- int i, nlt;
-#endif
- data_link_info_t *data_link_info;
-
- pch = pcap_open_live(devname, MIN_PACKET_SIZE, 0, 0, err_buf);
- if (pch == NULL)
- return NULL;
- err_buf[0] = '\0'; /* an empty list doesn't mean an error */
- 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);
- return NULL;
- }
- for (i = 0; i < nlt; i++) {
- data_link_info = create_data_link_info(linktypes[i]);
+ int 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);
+ for (i = 0; dlt_choices[i].name != NULL; i++) {
+ if (dlt_choices[i].dlt == dlt)
+ return (dlt_choices[i].name + sizeof("DLT_") - 1);
}
- free(linktypes);
-#else
- data_link_info = create_data_link_info(deflt);
- linktype_list = g_list_append(linktype_list, data_link_info);
-#endif
+ return (NULL);
+}
+#endif /* defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) */
- pcap_close(pch);
- return linktype_list;
+#if !defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION)
+const char *
+pcap_datalink_val_to_description(int dlt)
+{
+ int i;
+
+ for (i = 0; dlt_choices[i].name != NULL; i++) {
+ if (dlt_choices[i].dlt == dlt)
+ return (dlt_choices[i].description);
+ }
+ return (NULL);
}
+#endif /* defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION) */
+
+#endif /* !defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) || !defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION) */
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);
- if (linktype_info->description != NULL)
- g_free(linktype_info->description);
+ 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);
+ g_list_foreach(caps->data_link_types, free_linktype_cb, NULL);
+ g_list_free(caps->data_link_types);
+ g_free(caps);
}
-/* 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
-}
-
-
-#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
const char *
linktype_val_to_name(int dlt)
{
return pcap_datalink_val_to_name(dlt);
}
-#endif
-#ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
int linktype_name_to_val(const char *linktype)
{
return pcap_datalink_name_to_val(linktype);
}
-#endif
#endif /* HAVE_LIBPCAP */
git.samba.org / obnox / wireshark / wip.git / blobdiff