From Tom Brezinski:

[obnox/wireshark/wip.git] / dumpcap.c

diff --git a/dumpcap.c b/dumpcap.c
index f0ddbac65816ed27864828e77f98375b699dc71d..21e342c1ffb33067d5881ea7c431eefb2404bcf7 100644 (file)
--- a/dumpcap.c
+++ b/dumpcap.c
@@ -79,6 +79,9 @@
 #include "version_info.h"
 
 #include "capture-pcap-util.h"
+#ifdef _WIN32
+#include "capture-wpcap.h"
+#endif /* _WIN32 */
 
 #include "pcapio.h"
 
@@ -361,7 +364,7 @@ print_usage(gboolean print_ver)
         output = stdout;
         fprintf(output,
                 "Dumpcap " VERSION "%s\n"
-                "Capture network packets and dump them into a libpcap file.\n"
+                "Capture network packets and dump them into a pcapng file.\n"
                 "See http://www.wireshark.org for more information.\n",
                 wireshark_svnversion);
     } else {
@@ -412,7 +415,8 @@ print_usage(gboolean print_ver)
     fprintf(output, "  -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
     fprintf(output, "                           filesize:NUM - switch to next file after NUM KB\n");
     fprintf(output, "                              files:NUM - ringbuffer: replace after NUM files\n");
-    fprintf(output, "  -n                       use pcapng format instead of pcap\n");
+    fprintf(output, "  -n                       use pcapng format instead of pcap (default)\n");
+    fprintf(output, "  -P                       use libpcap format instead of pcapng\n");
     fprintf(output, "\n");
     fprintf(output, "Miscellaneous:\n");
     fprintf(output, "  -t                       use a separate thread per interface\n");
@@ -420,8 +424,8 @@ print_usage(gboolean print_ver)
     fprintf(output, "  -v                       print version information and exit\n");
     fprintf(output, "  -h                       display this help and exit\n");
     fprintf(output, "\n");
-    fprintf(output, "Example: dumpcap -i eth0 -a duration:60 -w output.pcap\n");
-    fprintf(output, "\"Capture network packets from interface eth0 until 60s passed into output.pcap\"\n");
+    fprintf(output, "Example: dumpcap -i eth0 -a duration:60 -w output.pcapng\n");
+    fprintf(output, "\"Capture network packets from interface eth0 until 60s passed into output.pcapng\"\n");
     fprintf(output, "\n");
     fprintf(output, "Use Ctrl-C to stop capturing at any time.\n");
 }
@@ -676,21 +680,40 @@ get_capture_device_open_failure_messages(const char *open_err_str,
         libpcap_warn = "";
     g_snprintf(errmsg, (gulong) errmsg_len,
                "The capture session could not be initiated (%s).", open_err_str);
-#ifndef _WIN32
+#ifdef _WIN32
+    if (!has_wpcap) {
+      g_snprintf(secondary_errmsg, (gulong) secondary_errmsg_len,
+                 "\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.");
+    } else {
+      g_snprintf(secondary_errmsg, (gulong) secondary_errmsg_len,
+                 "\n"
+                 "Please check that \"%s\" is the proper interface.\n"
+                 "\n"
+                 "\n"
+                 "Help can be found at:\n"
+                 "\n"
+                 "       http://wiki.wireshark.org/WinPcap\n"
+                 "       http://wiki.wireshark.org/CaptureSetup\n",
+                 iface);
+    }
+#else
     g_snprintf(secondary_errmsg, (gulong) secondary_errmsg_len,
                "Please check to make sure you have sufficient permissions, and that you have "
                "the proper interface or pipe specified.%s", libpcap_warn);
-#else
-    g_snprintf(secondary_errmsg, (gulong) secondary_errmsg_len,
-               "\n"
-               "Please check that \"%s\" is the proper interface.\n"
-               "\n"
-               "\n"
-               "Help can be found at:\n"
-               "\n"
-               "       http://wiki.wireshark.org/WinPcap\n"
-               "       http://wiki.wireshark.org/CaptureSetup\n",
-               iface);
 #endif /* _WIN32 */
 }
 
@@ -1279,6 +1302,7 @@ print_statistics_loop(gboolean machine_readable)
     if (if_list == NULL) {
         switch (err) {
         case CANT_GET_INTERFACE_LIST:
+        case DONT_HAVE_PCAP:
             cmdarg_err("%s", err_str);
             g_free(err_str);
             break;
@@ -4185,6 +4209,7 @@ main(int argc, char *argv[])
         if (if_list == NULL) {
             switch (err) {
             case CANT_GET_INTERFACE_LIST:
+            case DONT_HAVE_PCAP:
                 cmdarg_err("%s", err_str);
                 g_free(err_str);
                 exit_main(2);