Add svn:eol-style.

[metze/wireshark/wip.git] / capture-wpcap.c

diff --git a/capture-wpcap.c b/capture-wpcap.c
index f1d0cf06d66c8901cc1b13612ffc0598385a4f04..9bbfb968a429d69fab0964db0ca40fefc7048e5f 100644 (file)
--- a/capture-wpcap.c
+++ b/capture-wpcap.c
@@ -21,20 +21,21 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
 
 #include <stdio.h>
 #include <glib.h>
 #include <gmodule.h>
 
+#include <epan/strutil.h>
+
 #include "capture_ifinfo.h"
 #include "capture-pcap-util.h"
 #include "capture-pcap-util-int.h"
+#include "capture-wpcap.h"
 
 #include <wsutil/file_util.h>
 
@@ -69,6 +70,9 @@ static int     (*p_pcap_lookupnet) (const char *, bpf_u_int32 *, bpf_u_int32 *,
                        char *);
 static pcap_t* (*p_pcap_open_live) (const char *, int, int, int, char *);
 static int     (*p_pcap_loop) (pcap_t *, int, pcap_handler, guchar *);
+#ifdef HAVE_PCAP_OPEN_DEAD
+static pcap_t* (*p_pcap_open_dead) (int, int);
+#endif
 static void    (*p_pcap_freecode) (struct bpf_program *);
 #ifdef HAVE_PCAP_FINDALLDEVS
 static int     (*p_pcap_findalldevs) (pcap_if_t **, char *);
@@ -113,13 +117,17 @@ static int        (*p_pcap_set_datalink)(pcap_t *, int);
 static int     (*p_pcap_free_datalinks)(int *);
 #endif
 
+#ifdef HAVE_BPF_IMAGE
+static char     *(*p_bpf_image) (const struct bpf_insn *, int);
+#endif
+
 typedef struct {
        const char      *name;
        gpointer        *ptr;
        gboolean        optional;
 } symbol_table_t;
 
-#define SYM(x, y)      { STRINGIFY(x) , (gpointer) &CONCAT(p_,x), y }
+#define SYM(x, y)      { G_STRINGIFY(x) , (gpointer) &CONCAT(p_,x), y }
 
 void
 load_wpcap(void)
@@ -144,6 +152,9 @@ load_wpcap(void)
                SYM(pcap_createsrcstr, FALSE),
 #endif
                SYM(pcap_open_live, FALSE),
+#ifdef HAVE_PCAP_OPEN_DEAD
+               SYM(pcap_open_dead, FALSE),
+#endif
 #ifdef HAVE_PCAP_SETSAMPLING
                SYM(pcap_setsampling, TRUE),
 #endif
@@ -181,6 +192,9 @@ load_wpcap(void)
 #endif
 #ifdef HAVE_PCAP_FREE_DATALINKS
                SYM(pcap_free_datalinks, TRUE),
+#endif
+#ifdef HAVE_BPF_IMAGE
+                SYM(bpf_image, FALSE),
 #endif
                { NULL, NULL, FALSE }
        };
@@ -217,6 +231,34 @@ load_wpcap(void)
        has_wpcap = TRUE;
 }
 
+/*
+ * The official list of WinPcap mirrors is at
+ * http://www.winpcap.org/misc/mirrors.htm
+ */
+char *
+cant_load_winpcap_err(const char *app_name)
+{
+       return g_strdup_printf(
+"Unable to load WinPcap (wpcap.dll); %s will not be able to capture\n"
+"packets.\n"
+"\n"
+"In order to capture packets, WinPcap must be installed; see\n"
+"\n"
+"        http://www.winpcap.org/\n"
+"\n"
+"or the mirror at\n"
+"\n"
+"        http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\n"
+"\n"
+"or the mirror at\n"
+"\n"
+"        http://winpcap.cs.pu.edu.tw/\n"
+"\n"
+"for a downloadable version of WinPcap and for instructions on how to install\n"
+"WinPcap.",
+           app_name);
+}
+
 char*
 pcap_lookupdev (char *a)
 {
@@ -311,16 +353,44 @@ pcap_t*
 pcap_open_live(const char *a, int b, int c, int d, char *e)
 {
     if (!has_wpcap) {
+       g_snprintf(e, PCAP_ERRBUF_SIZE,
+                  "unable to load WinPcap (wpcap.dll); can't open %s to capture",
+                  a);
        return NULL;
     }
     return p_pcap_open_live(a, b, c, d, e);
 }
 
+#ifdef HAVE_PCAP_OPEN_DEAD
+pcap_t*
+pcap_open_dead(int a, int b)
+{
+    if (!has_wpcap) {
+       return NULL;
+    }
+    return p_pcap_open_dead(a, b);
+}
+#endif
+
+#ifdef HAVE_BPF_IMAGE
+char *
+bpf_image(const struct bpf_insn *a, int b)
+{
+    if (!has_wpcap) {
+       return NULL;
+    }
+    return p_bpf_image(a, b);
+}
+#endif
+
 #ifdef HAVE_PCAP_REMOTE
 pcap_t*
 pcap_open(const char *a, int b, int c, int d, struct pcap_rmtauth *e, char *f)
 {
     if (!has_wpcap) {
+       g_snprintf(f, PCAP_ERRBUF_SIZE,
+                  "unable to load WinPcap (wpcap.dll); can't open %s to capture",
+                  a);
        return NULL;
     }
     return p_pcap_open(a, b, c, d, e, f);
@@ -653,6 +723,16 @@ get_interface_list(int *err, char **err_str)
        int i, j;
        char errbuf[PCAP_ERRBUF_SIZE];
 
+       if (!has_wpcap) {
+               /*
+                * We don't have WinPcap, so we can't get a list of
+                * interfaces.
+                */
+               *err = DONT_HAVE_PCAP;
+               *err_str = cant_load_winpcap_err("you");
+               return NULL;
+       }
+
 #ifdef HAVE_PCAP_FINDALLDEVS
        if (p_pcap_findalldevs != NULL)
                return get_interface_list_findalldevs(err, err_str);
@@ -739,12 +819,12 @@ get_interface_list(int *err, char **err_str)
                                j = 0;
                                while (names[i] != 0) {
                                        if (j < MAX_WIN_IF_NAME_LEN)
-                                       ascii_name[j++] = (char) names[i++];
+                                               ascii_name[j++] = (char) names[i++];
                                }
                                ascii_name[j] = '\0';
                                i++;
                                il = g_list_append(il,
-                                   if_info_new(ascii_name, ascii_desc));
+                                   if_info_new(ascii_name, ascii_desc, FALSE));
                        }
                } else {
                        /*
@@ -764,7 +844,7 @@ get_interface_list(int *err, char **err_str)
                                 * that interface's description.
                                 */
                                il = g_list_append(il,
-                                   if_info_new(&win95names[i], desc));
+                                   if_info_new(&win95names[i], desc, FALSE));
 
                                /*
                                 * Skip to the next description.
@@ -823,7 +903,7 @@ cant_get_if_list_error_message(const char *err_str)
 void
 get_compiled_pcap_version(GString *str)
 {
-       g_string_append(str, "with WinPcap (version unknown)");
+       g_string_append(str, "with WinPcap (" G_STRINGIFY(PCAP_VERSION) ")");
 }
 
 /*
@@ -838,7 +918,7 @@ get_runtime_pcap_version(GString *str)
         * not and, if we have it and we have "pcap_lib_version()",
         * what version we have.
         */
-       GModule *handle;                /* handle returned by dlopen */
+       GModule *handle;                /* handle returned by ws_module_open */
        static gchar *packetVer;
        gchar *blankp;