From Tom Brezinski:
[obnox/wireshark/wip.git] / capture_info.c
index 05a09542d2bee1440a99f8018d77e4bed29db75c..48102d94749042bf13ac0f8a6568934805c531e2 100644 (file)
@@ -3,8 +3,8 @@
  *
  * $Id$
  *
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
  * Copyright 1998 Gerald Combs
  *
  * This program is free software; you can redistribute it and/or
@@ -34,6 +34,7 @@
 /* XXX - try to remove this later */
 #include <epan/prefs.h>
 /* XXX - try to remove this later */
+#include <epan/filesystem.h>
 
 #include "capture_info.h"
 
 #include <epan/dissectors/packet-fddi.h>
 #include <epan/dissectors/packet-fr.h>
 #include <epan/dissectors/packet-null.h>
+#include <epan/dissectors/packet-ppi.h>
 #include <epan/dissectors/packet-ppp.h>
 #include <epan/dissectors/packet-raw.h>
 #include <epan/dissectors/packet-sll.h>
 #include <epan/dissectors/packet-tr.h>
 #include <epan/dissectors/packet-ieee80211.h>
+#include <epan/dissectors/packet-radiotap.h>
 #include <epan/dissectors/packet-chdlc.h>
-#include <epan/dissectors/packet-prism.h>
 #include <epan/dissectors/packet-ipfc.h>
 #include <epan/dissectors/packet-arcnet.h>
+#include <epan/dissectors/packet-enc.h>
+#include <epan/dissectors/packet-i2c.h>
 
-
-
-void capture_info_packet(
-packet_counts *counts, gint wtap_linktype, const u_char *pd, guint32 caplen, union wtap_pseudo_header *pseudo_header);
+static void capture_info_packet(
+packet_counts *counts, gint wtap_linktype, const guchar *pd, guint32 caplen, union wtap_pseudo_header *pseudo_header);
 
 
 
@@ -69,11 +71,11 @@ typedef struct _info_data {
 } info_data_t;
 
 
-info_data_t info_data;
+static info_data_t info_data;
 
 
 /* open the info */
-void capture_info_open(const char *iface)
+void capture_info_open(capture_options *capture_opts)
 {
     info_data.counts.total      = 0;
     info_data.counts.sctp       = 0;
@@ -87,19 +89,129 @@ void capture_info_open(const char *iface)
     info_data.counts.vines      = 0;
     info_data.counts.other      = 0;
     info_data.counts.arp        = 0;
+    info_data.counts.i2c_event  = 0;
+    info_data.counts.i2c_data   = 0;
 
     info_data.wtap = NULL;
     info_data.ui.counts = &info_data.counts;
 
-    capture_info_ui_create(&info_data.ui, iface);
+    capture_info_ui_create(&info_data.ui, capture_opts);
 }
 
 
+static const char *
+cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
+                      int file_type)
+{
+    const char *errmsg;
+    static char errmsg_errno[1024+1];
+
+    if (err < 0) {
+        /* Wiretap error. */
+        switch (err) {
+
+        case WTAP_ERR_NOT_REGULAR_FILE:
+            errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
+            break;
+
+        case WTAP_ERR_FILE_UNKNOWN_FORMAT:
+            /* Seen only when opening a capture file for reading. */
+            errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
+            break;
+
+        case WTAP_ERR_UNSUPPORTED:
+            /* Seen only when opening a capture file for reading. */
+            g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                       "The file \"%%s\" isn't a capture file in a format TShark understands.\n"
+                       "(%s)", err_info);
+            g_free(err_info);
+            errmsg = errmsg_errno;
+            break;
+
+        case WTAP_ERR_CANT_WRITE_TO_PIPE:
+            /* Seen only when opening a capture file for writing. */
+            g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                       "The file \"%%s\" is a pipe, and %s capture files can't be "
+                       "written to a pipe.", wtap_file_type_string(file_type));
+            errmsg = errmsg_errno;
+            break;
+
+        case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
+            /* Seen only when opening a capture file for writing. */
+            errmsg = "TShark doesn't support writing capture files in that format.";
+            break;
+
+        case WTAP_ERR_UNSUPPORTED_ENCAP:
+            if (for_writing)
+                errmsg = "TShark can't save this capture in that format.";
+            else {
+                g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                           "The file \"%%s\" is a capture for a network type that TShark doesn't support.\n"
+                           "(%s)", err_info);
+                g_free(err_info);
+                errmsg = errmsg_errno;
+            }
+            break;
+
+        case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
+            if (for_writing)
+                errmsg = "TShark can't save this capture in that format.";
+            else
+                errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
+            break;
+
+        case WTAP_ERR_BAD_FILE:
+            /* Seen only when opening a capture file for reading. */
+            g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                       "The file \"%%s\" appears to be damaged or corrupt.\n"
+                       "(%s)", err_info);
+            g_free(err_info);
+            errmsg = errmsg_errno;
+            break;
+
+        case WTAP_ERR_CANT_OPEN:
+            if (for_writing)
+                errmsg = "The file \"%s\" could not be created for some unknown reason.";
+            else
+                errmsg = "The file \"%s\" could not be opened for some unknown reason.";
+            break;
+
+        case WTAP_ERR_SHORT_READ:
+            errmsg = "The file \"%s\" appears to have been cut short"
+                " in the middle of a packet or other data.";
+            break;
+
+        case WTAP_ERR_SHORT_WRITE:
+            errmsg = "A full header couldn't be written to the file \"%s\".";
+            break;
+
+        case WTAP_ERR_DECOMPRESS:
+            g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                       "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
+                       "(%s)", err_info);
+            g_free(err_info);
+            errmsg = errmsg_errno;
+            break;
+
+        default:
+            g_snprintf(errmsg_errno, sizeof(errmsg_errno),
+                       "The file \"%%s\" could not be %s: %s.",
+                       for_writing ? "created" : "opened",
+                       wtap_strerror(err));
+            errmsg = errmsg_errno;
+            break;
+        }
+    } else
+        errmsg = file_open_error_message(err, for_writing);
+    return errmsg;
+}
+
 /* new file arrived */
-void capture_info_new_file(const char *new_filename)
+gboolean capture_info_new_file(const char *new_filename)
 {
     int err;
     gchar *err_info;
+    gchar *err_msg;
 
 
     if(info_data.wtap != NULL) {
@@ -108,9 +220,13 @@ void capture_info_new_file(const char *new_filename)
 
     info_data.wtap = wtap_open_offline(new_filename, &err, &err_info, FALSE);
     if (!info_data.wtap) {
-        g_warning("capture_info_new_file: wtap open failed: %s", err_info);
-    }
-
+        err_msg = g_strdup_printf(cf_open_error_message(err, err_info, FALSE, WTAP_FILE_PCAP),
+                                  new_filename);
+        g_warning("capture_info_new_file: %d (%s)", err, err_msg);
+        g_free (err_msg);
+        return FALSE;
+    } else
+        return TRUE;
 }
 
 
@@ -119,7 +235,7 @@ void capture_info_new_packets(int to_read)
 {
     int err;
     gchar *err_info;
-    long data_offset;
+    gint64 data_offset;
     const struct wtap_pkthdr *phdr;
     union wtap_pseudo_header *pseudo_header;
     int wtap_linktype;
@@ -130,16 +246,19 @@ void capture_info_new_packets(int to_read)
 
     /*g_warning("new packets: %u", to_read);*/
 
-    while (to_read != 0 && (wtap_read(info_data.wtap, &err, &err_info, &data_offset))) {
-        phdr = wtap_phdr(info_data.wtap);
-        pseudo_header = wtap_pseudoheader(info_data.wtap);
-        wtap_linktype = phdr->pkt_encap;
-        buf = wtap_buf_ptr(info_data.wtap);
+    while (to_read > 0) {
+        wtap_cleareof(info_data.wtap);
+        if (wtap_read(info_data.wtap, &err, &err_info, &data_offset)) {
+            phdr = wtap_phdr(info_data.wtap);
+            pseudo_header = wtap_pseudoheader(info_data.wtap);
+            wtap_linktype = phdr->pkt_encap;
+            buf = wtap_buf_ptr(info_data.wtap);
 
-        capture_info_packet(&info_data.counts, wtap_linktype, buf, phdr->caplen, pseudo_header);
+            capture_info_packet(&info_data.counts, wtap_linktype, buf, phdr->caplen, pseudo_header);
 
-        /*g_warning("new packet");*/
-        to_read--;
+            /*g_warning("new packet");*/
+            to_read--;
+        }
     }
 
     capture_info_ui_update(&info_data.ui);
@@ -150,76 +269,92 @@ void capture_info_new_packets(int to_read)
 void capture_info_close(void)
 {
     capture_info_ui_destroy(&info_data.ui);
-    wtap_close(info_data.wtap);
+    if(info_data.wtap)
+        wtap_close(info_data.wtap);
 }
 
 
 static void
-capture_info_packet(packet_counts *counts, gint wtap_linktype, const u_char *pd, guint32 caplen, union wtap_pseudo_header *pseudo_header)
+capture_info_packet(packet_counts *counts, gint wtap_linktype, const guchar *pd, guint32 caplen, union wtap_pseudo_header *pseudo_header)
 {
-  counts->total++;
-  switch (wtap_linktype) {
+    counts->total++;
+    switch (wtap_linktype) {
     case WTAP_ENCAP_ETHERNET:
-      capture_eth(pd, 0, caplen, counts);
-      break;
+        capture_eth(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_FDDI:
     case WTAP_ENCAP_FDDI_BITSWAPPED:
-      capture_fddi(pd, caplen, counts);
-      break;
+        capture_fddi(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_PRISM_HEADER:
-      capture_prism(pd, 0, caplen, counts);
-      break;
+        capture_prism(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_TOKEN_RING:
-      capture_tr(pd, 0, caplen, counts);
-      break;
+        capture_tr(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_NULL:
-      capture_null(pd, caplen, counts);
-      break;
+        capture_null(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_PPP:
-      capture_ppp_hdlc(pd, 0, caplen, counts);
-      break;
+        capture_ppp_hdlc(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_RAW_IP:
-      capture_raw(pd, caplen, counts);
-      break;
+        capture_raw(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_SLL:
-      capture_sll(pd, caplen, counts);
-      break;
+        capture_sll(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_LINUX_ATM_CLIP:
-      capture_clip(pd, caplen, counts);
-      break;
+        capture_clip(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_IEEE_802_11:
     case WTAP_ENCAP_IEEE_802_11_WITH_RADIO:
-      capture_ieee80211(pd, 0, caplen, counts);
-      break;
+        capture_ieee80211(pd, 0, caplen, counts);
+        break;
+    case WTAP_ENCAP_IEEE_802_11_WLAN_RADIOTAP:
+        capture_radiotap(pd, 0, caplen, counts);
+        break;
+    case WTAP_ENCAP_IEEE_802_11_WLAN_AVS:
+        capture_wlancap(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_CHDLC:
-      capture_chdlc(pd, 0, caplen, counts);
-      break;
+        capture_chdlc(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_LOCALTALK:
-      capture_llap(counts);
-      break;
+        capture_llap(counts);
+        break;
     case WTAP_ENCAP_ATM_PDUS:
-      capture_atm(pseudo_header, pd, caplen, counts);
-      break;
+        capture_atm(pseudo_header, pd, caplen, counts);
+        break;
     case WTAP_ENCAP_IP_OVER_FC:
-      capture_ipfc(pd, caplen, counts);
-      break;
+        capture_ipfc(pd, caplen, counts);
+        break;
     case WTAP_ENCAP_ARCNET:
-      capture_arcnet(pd, caplen, counts, FALSE, TRUE);
-      break;
+        capture_arcnet(pd, caplen, counts, FALSE, TRUE);
+        break;
     case WTAP_ENCAP_ARCNET_LINUX:
-      capture_arcnet(pd, caplen, counts, TRUE, FALSE);
-      break;
+        capture_arcnet(pd, caplen, counts, TRUE, FALSE);
+        break;
     case WTAP_ENCAP_APPLE_IP_OVER_IEEE1394:
-      capture_ap1394(pd, 0, caplen, counts);
-      break;
+        capture_ap1394(pd, 0, caplen, counts);
+        break;
     case WTAP_ENCAP_FRELAY:
     case WTAP_ENCAP_FRELAY_WITH_PHDR:
-      capture_fr(pd, 0, caplen, counts);
-      break;
-    /* XXX - some ATM drivers on FreeBSD might prepend a 4-byte ATM
-       pseudo-header to DLT_ATM_RFC1483, with LLC header following;
-       we might have to implement that at some point. */
-  }
+        capture_fr(pd, 0, caplen, counts);
+        break;
+    case WTAP_ENCAP_ENC:
+        capture_enc(pd, caplen, counts);
+        break;
+    case WTAP_ENCAP_PPI:
+        capture_ppi(pd, caplen, counts);
+        break;
+    case WTAP_ENCAP_I2C:
+        capture_i2c(pseudo_header, counts);
+        break;
+        /* XXX - some ATM drivers on FreeBSD might prepend a 4-byte ATM
+           pseudo-header to DLT_ATM_RFC1483, with LLC header following;
+           we might have to implement that at some point. */
+    }
 }