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wireshark/gtk/ssl-dlg.c

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/* ssl_dlg.c
*
* $Id$
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.
*/
#include "config.h"
#include <gtk/gtk.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <ctype.h>
#include <color.h>
#include <gtk/colors.h>
#include <gtk/main.h>
#include <epan/follow.h>
#include <gtk/dlg_utils.h>
#include <gtk/file_dlg.h>
#include <gtk/keys.h>
#include <globals.h>
#include <alert_box.h>
#include <simple_dialog.h>
#include <epan/dissectors/packet-ipv6.h>
#include <epan/prefs.h>
#include <epan/addr_resolv.h>
#include <epan/charsets.h>
#include <util.h>
#include <gtk/gui_utils.h>
#include <epan/epan_dissect.h>
#include <epan/filesystem.h>
#include <gtk/compat_macros.h>
#include <epan/ipproto.h>
#include <gtk/font_utils.h>
#include <wiretap/file_util.h>
#include <epan/tap.h>
#ifdef SSL_PLUGIN
#include "packet-ssl-utils.h"
#else
#include <epan/dissectors/packet-ssl-utils.h>
#endif
#include "ssl-dlg.h"
/* Show Stream */
typedef enum {
FROM_CLIENT,
FROM_SERVER,
BOTH_HOSTS
} show_stream_t;
/* Show Type */
typedef enum {
SHOW_ASCII,
SHOW_HEXDUMP,
SHOW_CARRAY,
SHOW_RAW
} show_type_t;
typedef struct {
show_stream_t show_stream;
show_type_t show_type;
GtkWidget *text;
GtkWidget *ascii_bt;
GtkWidget *ebcdic_bt;
GtkWidget *hexdump_bt;
GtkWidget *carray_bt;
GtkWidget *raw_bt;
GtkWidget *follow_save_as_w;
gboolean is_ipv6;
char *filter_out_filter;
GtkWidget *filter_te;
GtkWidget *streamwindow;
GList *ssl_decrypted_data;
guint bytes_written[2];
guint client_port;
char client_ip[MAX_IPADDR_LEN];
} follow_info_t;
static void follow_destroy_cb(GtkWidget * win, gpointer data);
static void follow_charset_toggle_cb(GtkWidget * w, gpointer parent_w);
static void follow_load_text(follow_info_t *follow_info);
static void follow_filter_out_stream(GtkWidget * w, gpointer parent_w);
static void follow_save_as_cmd_cb(GtkWidget * w, gpointer data);
static void follow_save_as_ok_cb(GtkWidget * w, gpointer fs);
static void follow_save_as_destroy_cb(GtkWidget * win, gpointer user_data);
static void follow_stream_om_both(GtkWidget * w, gpointer data);
static void follow_stream_om_client(GtkWidget * w, gpointer data);
static void follow_stream_om_server(GtkWidget * w, gpointer data);
#define E_FOLLOW_INFO_KEY "follow_info_key"
/* List of "follow_info_t" structures for all "Follow SSL Stream" windows,
so we can redraw them all if the colors or font changes. */
static GList *follow_infos;
typedef struct {
gboolean is_server;
StringInfo* data;
} SslDecryptedRecord;
/* Add a "follow_info_t" structure to the list. */
static void
remember_follow_info(follow_info_t *follow_info)
{
follow_infos = g_list_append(follow_infos, follow_info);
}
/* Remove a "follow_info_t" structure from the list. */
static void
forget_follow_info(follow_info_t *follow_info)
{
follow_infos = g_list_remove(follow_infos, follow_info);
}
static int
ssl_queue_packet_data(void *tapdata, packet_info *pinfo, epan_dissect_t *edt _U_, const void *ssl)
{
follow_info_t* follow_info = tapdata;
SslDecryptedRecord* rec;
int proto_ssl = (int) ssl;
SslPacketInfo* pi = p_get_proto_data(pinfo->fd, proto_ssl);
/* skip packet without decrypted data payload*/
if (!pi || !pi->app_data.data)
return 0;
/* compute packet direction */
rec = g_malloc(sizeof(SslDecryptedRecord));
if (follow_info->client_port == 0) {
follow_info->client_port = pinfo->srcport;
memcpy(follow_info->client_ip, pinfo->src.data, pinfo->src.len);
}
if (memcmp(follow_info->client_ip, pinfo->src.data, pinfo->src.len) == 0 &&
follow_info->client_port == pinfo->srcport) {
rec->is_server = 0;
}
else
rec->is_server = 1;
/* update stream counter */
follow_info->bytes_written[rec->is_server] += pi->app_data.data_len;
/* extract decrypted data and queue it locally */
rec->data = &pi->app_data;
follow_info->ssl_decrypted_data = g_list_append(
follow_info->ssl_decrypted_data,rec);
return 0;
}
extern int
packet_is_ssl(epan_dissect_t* edt);
/* Follow the SSL stream, if any, to which the last packet that we called
a dissection routine on belongs (this might be the most recently
selected packet, or it might be the last packet in the file). */
void
ssl_stream_cb(GtkWidget * w, gpointer data _U_)
{
GtkWidget *streamwindow, *vbox, *txt_scrollw, *text, *filter_te;
GtkWidget *hbox, *button_hbox, *button, *radio_bt;
GtkWidget *stream_fr, *stream_vb;
GtkWidget *stream_om, *stream_menu, *stream_mi;
GtkTooltips *tooltips;
gchar *follow_filter;
const gchar *previous_filter;
int filter_out_filter_len, previus_filter_len;
const char *hostname0, *hostname1;
char *port0, *port1;
char string[128];
follow_tcp_stats_t stats;
follow_info_t *follow_info;
GString* msg;
/* we got ssl so we can follow */
if (!packet_is_ssl(cfile.edt)) {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
"Error following stream. Please make\n"
"sure you have an SSL packet selected.");
return;
}
follow_info = g_new0(follow_info_t, 1);
/* Create a new filter that matches all packets in the SSL stream,
and set the display filter entry accordingly */
reset_tcp_reassembly();
follow_filter = build_follow_filter(&cfile.edt->pi);
if (!follow_filter)
{
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
"Error creating filter for this stream.\n"
"A network layer header is needed");
return;
}
/* Set the display filter entry accordingly */
filter_te = OBJECT_GET_DATA(w, E_DFILTER_TE_KEY);
/* needed in follow_filter_out_stream(), is there a better way? */
follow_info->filter_te = filter_te;
/* save previous filter, const since we're not supposed to alter */
previous_filter =
(const gchar *)gtk_entry_get_text(GTK_ENTRY(filter_te));
/* allocate our new filter. API claims g_malloc terminates program on failure */
/* my calc for max alloc needed is really +10 but when did a few extra bytes hurt ? */
previus_filter_len = previous_filter?strlen(previous_filter):0;
filter_out_filter_len = strlen(follow_filter) + previus_filter_len + 16;
follow_info->filter_out_filter = (gchar *)g_malloc(filter_out_filter_len);
/* append the negation */
if(previus_filter_len) {
g_snprintf(follow_info->filter_out_filter, filter_out_filter_len,
"%s and !(%s)", previous_filter, follow_filter);
} else {
g_snprintf(follow_info->filter_out_filter, filter_out_filter_len,
"!(%s)", follow_filter);
}
/* data will be passed via tap callback*/
msg = register_tap_listener("ssl", follow_info, follow_filter,
NULL, ssl_queue_packet_data, NULL);
if (msg)
{
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
"Can't register ssl tap: %s\n",msg->str);
return;
}
gtk_entry_set_text(GTK_ENTRY(filter_te), follow_filter);
/* Run the display filter so it goes in effect - even if it's the
same as the previous display filter. */
main_filter_packets(&cfile, follow_filter, TRUE);
/* Free the filter string, as we're done with it. */
g_free(follow_filter);
/* The data_out_file should now be full of the streams information */
remove_tap_listener(follow_info);
/* The data_out_filename file now has all the text that was in the session */
streamwindow = dlg_window_new("Follow SSL Stream");
/* needed in follow_filter_out_stream(), is there a better way? */
follow_info->streamwindow = streamwindow;
gtk_widget_set_name(streamwindow, "SSL stream window");
gtk_window_set_default_size(GTK_WINDOW(streamwindow), DEF_WIDTH, DEF_HEIGHT);
gtk_container_border_width(GTK_CONTAINER(streamwindow), 6);
/* setup the container */
tooltips = gtk_tooltips_new ();
vbox = gtk_vbox_new(FALSE, 6);
gtk_container_add(GTK_CONTAINER(streamwindow), vbox);
/* content frame */
if (incomplete_tcp_stream) {
stream_fr = gtk_frame_new("Stream Content (incomplete)");
} else {
stream_fr = gtk_frame_new("Stream Content");
}
gtk_container_add(GTK_CONTAINER(vbox), stream_fr);
gtk_widget_show(stream_fr);
stream_vb = gtk_vbox_new(FALSE, 6);
gtk_container_set_border_width( GTK_CONTAINER(stream_vb) , 6);
gtk_container_add(GTK_CONTAINER(stream_fr), stream_vb);
/* create a scrolled window for the text */
txt_scrollw = scrolled_window_new(NULL, NULL);
#if GTK_MAJOR_VERSION >= 2
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(txt_scrollw),
GTK_SHADOW_IN);
#endif
gtk_box_pack_start(GTK_BOX(stream_vb), txt_scrollw, TRUE, TRUE, 0);
/* create a text box */
#if GTK_MAJOR_VERSION < 2
text = gtk_text_new(NULL, NULL);
gtk_text_set_editable(GTK_TEXT(text), FALSE);
#else
text = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
#endif
gtk_container_add(GTK_CONTAINER(txt_scrollw), text);
follow_info->text = text;
/* stream hbox */
hbox = gtk_hbox_new(FALSE, 1);
gtk_box_pack_start(GTK_BOX(stream_vb), hbox, FALSE, FALSE, 0);
/* Create Save As Button */
button = BUTTON_NEW_FROM_STOCK(GTK_STOCK_SAVE_AS);
SIGNAL_CONNECT(button, "clicked", follow_save_as_cmd_cb, follow_info);
gtk_tooltips_set_tip (tooltips, button, "Save the content as currently displayed ", NULL);
gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
/* Stream to show */
follow_tcp_stats(&stats);
if (stats.is_ipv6) {
struct e_in6_addr ipaddr;
memcpy(&ipaddr, stats.ip_address[0], 16);
hostname0 = get_hostname6(&ipaddr);
memcpy(&ipaddr, stats.ip_address[0], 16);
hostname1 = get_hostname6(&ipaddr);
} else {
guint32 ipaddr;
memcpy(&ipaddr, stats.ip_address[0], 4);
hostname0 = get_hostname(ipaddr);
memcpy(&ipaddr, stats.ip_address[1], 4);
hostname1 = get_hostname(ipaddr);
}
port0 = get_tcp_port(stats.tcp_port[0]);
port1 = get_tcp_port(stats.tcp_port[1]);
follow_info->is_ipv6 = stats.is_ipv6;
stream_om = gtk_option_menu_new();
stream_menu = gtk_menu_new();
/* Both Stream Directions */
g_snprintf(string, sizeof(string),
"Entire conversation (%u bytes)",
follow_info->bytes_written[0] + follow_info->bytes_written[1]);
stream_mi = gtk_menu_item_new_with_label(string);
SIGNAL_CONNECT(stream_mi, "activate", follow_stream_om_both,
follow_info);
gtk_menu_append(GTK_MENU(stream_menu), stream_mi);
gtk_widget_show(stream_mi);
follow_info->show_stream = BOTH_HOSTS;
/* Host 0 --> Host 1 */
g_snprintf(string, sizeof(string), "%s:%s --> %s:%s (%u bytes)",
hostname0, port0, hostname1, port1,
follow_info->bytes_written[0]);
stream_mi = gtk_menu_item_new_with_label(string);
SIGNAL_CONNECT(stream_mi, "activate", follow_stream_om_client,
follow_info);
gtk_menu_append(GTK_MENU(stream_menu), stream_mi);
gtk_widget_show(stream_mi);
/* Host 1 --> Host 0 */
g_snprintf(string, sizeof(string), "%s:%s --> %s:%s (%u bytes)",
hostname1, port1, hostname0, port0,
follow_info->bytes_written[1]);
stream_mi = gtk_menu_item_new_with_label(string);
SIGNAL_CONNECT(stream_mi, "activate", follow_stream_om_server,
follow_info);
gtk_menu_append(GTK_MENU(stream_menu), stream_mi);
gtk_widget_show(stream_mi);
gtk_option_menu_set_menu(GTK_OPTION_MENU(stream_om), stream_menu);
/* Set history to 0th item, i.e., the first item. */
gtk_option_menu_set_history(GTK_OPTION_MENU(stream_om), 0);
gtk_tooltips_set_tip (tooltips, stream_om,
"Select the stream direction to display", NULL);
gtk_box_pack_start(GTK_BOX(hbox), stream_om, FALSE, FALSE, 0);
/* ASCII radio button */
radio_bt = gtk_radio_button_new_with_label(NULL, "ASCII");
gtk_tooltips_set_tip (tooltips, radio_bt, "Stream data output in \"ASCII\" format", NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(radio_bt), TRUE);
gtk_box_pack_start(GTK_BOX(hbox), radio_bt, FALSE, FALSE, 0);
SIGNAL_CONNECT(radio_bt, "toggled", follow_charset_toggle_cb,
follow_info);
follow_info->ascii_bt = radio_bt;
follow_info->show_type = SHOW_ASCII;
/* HEX DUMP radio button */
radio_bt = gtk_radio_button_new_with_label(gtk_radio_button_group
(GTK_RADIO_BUTTON(radio_bt)),
"Hex Dump");
gtk_tooltips_set_tip (tooltips, radio_bt, "Stream data output in \"Hexdump\" format", NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(radio_bt), FALSE);
gtk_box_pack_start(GTK_BOX(hbox), radio_bt, FALSE, FALSE, 0);
SIGNAL_CONNECT(radio_bt, "toggled", follow_charset_toggle_cb,
follow_info);
follow_info->hexdump_bt = radio_bt;
/* C Array radio button */
radio_bt = gtk_radio_button_new_with_label(gtk_radio_button_group
(GTK_RADIO_BUTTON(radio_bt)),
"C Arrays");
gtk_tooltips_set_tip (tooltips, radio_bt, "Stream data output in \"C Array\" format", NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(radio_bt), FALSE);
gtk_box_pack_start(GTK_BOX(hbox), radio_bt, FALSE, FALSE, 0);
SIGNAL_CONNECT(radio_bt, "toggled", follow_charset_toggle_cb,
follow_info);
follow_info->carray_bt = radio_bt;
/* Raw radio button */
radio_bt = gtk_radio_button_new_with_label(gtk_radio_button_group
(GTK_RADIO_BUTTON(radio_bt)),
"Raw");
gtk_tooltips_set_tip (tooltips, radio_bt, "Stream data output in \"Raw\" (binary) format. "
"As this contains non printable characters, the screen output will be in ASCII format", NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(radio_bt), FALSE);
gtk_box_pack_start(GTK_BOX(hbox), radio_bt, FALSE, FALSE, 0);
SIGNAL_CONNECT(radio_bt, "toggled", follow_charset_toggle_cb,
follow_info);
follow_info->raw_bt = radio_bt;
/* button hbox */
button_hbox = gtk_hbutton_box_new();
gtk_box_pack_start(GTK_BOX(vbox), button_hbox, FALSE, FALSE, 0);
gtk_button_box_set_layout (GTK_BUTTON_BOX(button_hbox), GTK_BUTTONBOX_END);
gtk_button_box_set_spacing(GTK_BUTTON_BOX(button_hbox), 5);
/* Create exclude stream button */
button = gtk_button_new_with_label("Filter Out This Stream");
SIGNAL_CONNECT(button, "clicked", follow_filter_out_stream, follow_info);
gtk_tooltips_set_tip (tooltips, button,
"Build a display filter which cuts this stream from the capture", NULL);
gtk_box_pack_start(GTK_BOX(button_hbox), button, FALSE, FALSE, 0);
/* Create Close Button */
button = BUTTON_NEW_FROM_STOCK(GTK_STOCK_CLOSE);
gtk_tooltips_set_tip (tooltips, button,
"Close the dialog and keep the current display filter", NULL);
gtk_box_pack_start(GTK_BOX(button_hbox), button, FALSE, FALSE, 0);
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
window_set_cancel_button(streamwindow, button, window_cancel_button_cb);
/* Tuck away the follow_info object into the window */
OBJECT_SET_DATA(streamwindow, E_FOLLOW_INFO_KEY, follow_info);
follow_load_text(follow_info);
remember_follow_info(follow_info);
SIGNAL_CONNECT(streamwindow, "delete_event", window_delete_event_cb, NULL);
SIGNAL_CONNECT(streamwindow, "destroy", follow_destroy_cb, NULL);
/* Make sure this widget gets destroyed if we quit the main loop,
so that if we exit, we clean up any temporary files we have
for "Follow SSL Stream" windows. */
gtk_quit_add_destroy(gtk_main_level(), GTK_OBJECT(streamwindow));
gtk_widget_show_all(streamwindow);
window_present(streamwindow);
}
/* The destroy call back has the responsibility of
* unlinking the temporary file
* and freeing the filter_out_filter */
static void
follow_destroy_cb(GtkWidget *w, gpointer data _U_)
{
GList* cur;
follow_info_t *follow_info;
follow_info = OBJECT_GET_DATA(w, E_FOLLOW_INFO_KEY);
g_free(follow_info->filter_out_filter);
forget_follow_info(follow_info);
/* free decrypted data list*/
for (cur = follow_info->ssl_decrypted_data; cur; cur = g_list_next(cur))
if (cur->data)
{
g_free(cur->data);
cur->data = NULL;
}
g_list_free (follow_info->ssl_decrypted_data);
g_free(follow_info);
}
/* XXX - can I emulate follow_charset_toggle_cb() instead of having
* 3 different functions here?
* That might not be a bad idea, as it might mean we only reload
* the window once, not twice - see follow_charset_toggle_cb()
* for an explanation. */
static void
follow_stream_om_both(GtkWidget *w _U_, gpointer data)
{
follow_info_t *follow_info = data;
follow_info->show_stream = BOTH_HOSTS;
follow_load_text(follow_info);
}
static void
follow_stream_om_client(GtkWidget *w _U_, gpointer data)
{
follow_info_t *follow_info = data;
follow_info->show_stream = FROM_CLIENT;
follow_load_text(follow_info);
}
static void
follow_stream_om_server(GtkWidget *w _U_, gpointer data)
{
follow_info_t *follow_info = data;
follow_info->show_stream = FROM_SERVER;
follow_load_text(follow_info);
}
/* Handles the display style toggling */
static void
follow_charset_toggle_cb(GtkWidget * w _U_, gpointer data)
{
follow_info_t *follow_info = data;
/*
* A radio button toggles when it goes on and when it goes
* off, so when you click a radio button two signals are
* delivered. We only want to reprocess the display once,
* so we do it only when the button goes on.
*/
if (GTK_TOGGLE_BUTTON(w)->active) {
if (w == follow_info->hexdump_bt)
follow_info->show_type = SHOW_HEXDUMP;
else if (w == follow_info->carray_bt)
follow_info->show_type = SHOW_CARRAY;
else if (w == follow_info->ascii_bt)
follow_info->show_type = SHOW_ASCII;
else if (w == follow_info->raw_bt)
follow_info->show_type = SHOW_RAW;
follow_load_text(follow_info);
}
}
#define FLT_BUF_SIZE 1024
typedef enum {
FRS_OK,
FRS_OPEN_ERROR,
FRS_READ_ERROR,
FRS_PRINT_ERROR
} frs_return_t;
/*
* XXX - the routine pointed to by "print_line" doesn't get handed lines,
* it gets handed bufferfuls. That's fine for "follow_write_raw()"
* and "follow_add_to_gtk_text()", but, as "follow_print_text()" calls
* the "print_line()" routine from "print.c", and as that routine might
* genuinely expect to be handed a line (if, for example, it's using
* some OS or desktop environment's printing API, and that API expects
* to be handed lines), "follow_print_text()" should probably accumulate
* lines in a buffer and hand them "print_line()". (If there's a
* complete line in a buffer - i.e., there's nothing of the line in
* the previous buffer or the next buffer - it can just hand that to
* "print_line()" after filtering out non-printables, as an
* optimization.)
*
* This might or might not be the reason why C arrays display
* correctly but get extra blank lines very other line when printed.
*/
static frs_return_t
follow_read_stream(follow_info_t *follow_info,
gboolean (*print_line) (char *, size_t, gboolean, void *),
void *arg)
{
int iplen;
guint32 current_pos, global_client_pos = 0, global_server_pos = 0;
guint32 *global_pos;
gboolean skip;
gchar initbuf[256];
guint32 server_packet_count = 0;
guint32 client_packet_count = 0;
static const gchar hexchars[16] = "0123456789abcdef";
GList* cur;
iplen = (follow_info->is_ipv6) ? 16 : 4;
for (cur = follow_info->ssl_decrypted_data; cur; cur = g_list_next(cur)) {
SslDecryptedRecord* rec = cur->data;
skip = FALSE;
if (!rec->is_server) {
global_pos = &global_client_pos;
if (follow_info->show_stream == FROM_SERVER) {
skip = TRUE;
}
}
else {
global_pos = &global_server_pos;
if (follow_info->show_stream == FROM_CLIENT) {
skip = TRUE;
}
}
if (!skip) {
size_t nchars = rec->data->data_len;
char* buffer = (char*) rec->data->data;
switch (follow_info->show_type) {
case SHOW_ASCII:
/* If our native arch is EBCDIC, call:
* ASCII_TO_EBCDIC(buffer, nchars);
*/
if (!(*print_line) (buffer, nchars, rec->is_server, arg))
goto print_error;
break;
case SHOW_RAW:
/* Don't translate, no matter what the native arch
* is.
*/
if (!(*print_line) (buffer, nchars, rec->is_server, arg))
goto print_error;
break;
case SHOW_HEXDUMP:
current_pos = 0;
while (current_pos < nchars) {
gchar hexbuf[256];
int i;
gchar *cur = hexbuf, *ascii_start;
/* is_server indentation : put 78 spaces at the
* beginning of the string */
if (rec->is_server && follow_info->show_stream == BOTH_HOSTS) {
memset(cur, ' ', 78);
cur += 78;
}
cur += g_snprintf(cur, 20, "%08X ", *global_pos);
/* 49 is space consumed by hex chars */
ascii_start = cur + 49;
for (i = 0; i < 16 && current_pos + i < nchars; i++) {
*cur++ =
hexchars[(buffer[current_pos + i] & 0xf0) >> 4];
*cur++ =
hexchars[buffer[current_pos + i] & 0x0f];
*cur++ = ' ';
if (i == 7)
*cur++ = ' ';
}
/* Fill it up if column isn't complete */
while (cur < ascii_start)
*cur++ = ' ';
/* Now dump bytes as text */
for (i = 0; i < 16 && current_pos + i < nchars; i++) {
*cur++ =
(isprint((guchar)buffer[current_pos + i]) ?
buffer[current_pos + i] : '.' );
if (i == 7) {
*cur++ = ' ';
}
}
current_pos += i;
(*global_pos) += i;
*cur++ = '\n';
*cur = 0;
if (!(*print_line) (hexbuf, strlen(hexbuf), rec->is_server, arg))
goto print_error;
}
break;
case SHOW_CARRAY:
current_pos = 0;
g_snprintf(initbuf, sizeof(initbuf), "char peer%d_%d[] = {\n",
rec->is_server ? 1 : 0,
rec->is_server ? server_packet_count++ : client_packet_count++);
if (!(*print_line) (initbuf, strlen(initbuf), rec->is_server, arg))
goto print_error;
while (current_pos < nchars) {
gchar hexbuf[256];
int i, cur;
cur = 0;
for (i = 0; i < 8 && current_pos + i < nchars; i++) {
/* Prepend entries with "0x" */
hexbuf[cur++] = '0';
hexbuf[cur++] = 'x';
hexbuf[cur++] =
hexchars[(buffer[current_pos + i] & 0xf0) >> 4];
hexbuf[cur++] =
hexchars[buffer[current_pos + i] & 0x0f];
/* Delimit array entries with a comma */
if (current_pos + i + 1 < nchars)
hexbuf[cur++] = ',';
hexbuf[cur++] = ' ';
}
/* Terminate the array if we are at the end */
if (current_pos + i == nchars) {
hexbuf[cur++] = '}';
hexbuf[cur++] = ';';
}
current_pos += i;
(*global_pos) += i;
hexbuf[cur++] = '\n';
hexbuf[cur] = 0;
if (!(*print_line) (hexbuf, strlen(hexbuf), rec->is_server, arg))
goto print_error;
}
break;
}
}
}
return FRS_OK;
print_error:
return FRS_PRINT_ERROR;
}
/*
* XXX - for text printing, we probably want to wrap lines at 80 characters;
* (PostScript printing is doing this already), and perhaps put some kind of
* dingbat (to use the technical term) to indicate a wrapped line, along the
* lines of what's done when displaying this in a window, as per Warren Young's
* suggestion.
*/
static gboolean
follow_print_text(char *buffer, size_t nchars, gboolean is_server _U_, void *arg)
{
print_stream_t *stream = arg;
size_t i;
char *str;
/* convert non printable characters */
for (i = 0; i < nchars; i++) {
if (buffer[i] == '\n' || buffer[i] == '\r')
continue;
if (! isprint((guchar)buffer[i])) {
buffer[i] = '.';
}
}
/* convert unterminated char array to a zero terminated string */
str = g_malloc(nchars + 1);
memcpy(str, buffer, nchars);
str[nchars] = 0;
print_line(stream, /*indent*/ 0, str);
g_free(str);
return TRUE;
}
static gboolean
follow_write_raw(char *buffer, size_t nchars, gboolean is_server _U_, void *arg)
{
FILE *fh = arg;
size_t nwritten;
nwritten = fwrite(buffer, 1, nchars, fh);
if (nwritten != nchars)
return FALSE;
return TRUE;
}
static void
follow_filter_out_stream(GtkWidget * w _U_, gpointer data)
{
follow_info_t *follow_info = data;
/* Lock out user from messing with us. (ie. don't free our data!) */
gtk_widget_set_sensitive(follow_info->streamwindow, FALSE);
/* Set the display filter. */
gtk_entry_set_text(GTK_ENTRY(follow_info->filter_te), follow_info->filter_out_filter);
/* Run the display filter so it goes in effect. */
main_filter_packets(&cfile, follow_info->filter_out_filter, FALSE);
/* we force a subsequent close */
window_destroy(follow_info->streamwindow);
return;
}
/* static variable declarations to speed up the performance
* of follow_load_text and follow_add_to_gtk_text
*/
static GdkColor server_fg, server_bg;
static GdkColor client_fg, client_bg;
#if GTK_MAJOR_VERSION >= 2
static GtkTextTag *server_tag, *client_tag;
#endif
static gboolean
follow_add_to_gtk_text(char *buffer, size_t nchars, gboolean is_server,
void *arg)
{
GtkWidget *text = arg;
#if GTK_MAJOR_VERSION >= 2
GtkTextBuffer *buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
GtkTextIter iter;
#endif
#if GTK_MAJOR_VERSION >= 2 || GTK_MINOR_VERSION >= 3
/* While our isprint() hack is in place, we
* have to use convert some chars to '.' in order
* to be able to see the data we *should* see
* in the GtkText widget.
*/
size_t i;
for (i = 0; i < nchars; i++) {
if (buffer[i] == '\n' || buffer[i] == '\r')
continue;
if (! isprint(buffer[i])) {
buffer[i] = '.';
}
}
#endif
#if GTK_MAJOR_VERSION < 2
if (is_server) {
gtk_text_insert(GTK_TEXT(text), user_font_get_regular(), &server_fg,
&server_bg, buffer, nchars);
} else {
gtk_text_insert(GTK_TEXT(text), user_font_get_regular(), &client_fg,
&client_bg, buffer, nchars);
}
#else
gtk_text_buffer_get_end_iter(buf, &iter);
if (is_server) {
gtk_text_buffer_insert_with_tags(buf, &iter, buffer, nchars,
server_tag, NULL);
} else {
gtk_text_buffer_insert_with_tags(buf, &iter, buffer, nchars,
client_tag, NULL);
}
#endif
return TRUE;
}
static void
follow_load_text(follow_info_t *follow_info)
{
#if GTK_MAJOR_VERSION < 2
int bytes_already;
#else
GtkTextBuffer *buf;
buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(follow_info->text));
#endif
/* prepare colors one time for repeated use by follow_add_to_gtk_text */
color_t_to_gdkcolor(&server_fg, &prefs.st_server_fg);
color_t_to_gdkcolor(&server_bg, &prefs.st_server_bg);
color_t_to_gdkcolor(&client_fg, &prefs.st_client_fg);
color_t_to_gdkcolor(&client_bg, &prefs.st_client_bg);
/* Delete any info already in text box */
#if GTK_MAJOR_VERSION < 2
bytes_already = gtk_text_get_length(GTK_TEXT(follow_info->text));
if (bytes_already > 0) {
gtk_text_set_point(GTK_TEXT(follow_info->text), 0);
gtk_text_forward_delete(GTK_TEXT(follow_info->text), bytes_already);
}
/* stop the updates while we fill the text box */
gtk_text_freeze(GTK_TEXT(follow_info->text));
#else
/* prepare tags one time for repeated use by follow_add_to_gtk_text */
server_tag = gtk_text_buffer_create_tag(buf, NULL, "foreground-gdk", &server_fg,
"background-gdk", &server_bg, "font-desc",
user_font_get_regular(), NULL);
client_tag = gtk_text_buffer_create_tag(buf, NULL, "foreground-gdk", &client_fg,
"background-gdk", &client_bg, "font-desc",
user_font_get_regular(), NULL);
gtk_text_buffer_set_text(buf, "", -1);
#endif
follow_read_stream(follow_info, follow_add_to_gtk_text, follow_info->text);
#if GTK_MAJOR_VERSION < 2
gtk_text_thaw(GTK_TEXT(follow_info->text));
#endif
}
/*
* Keep a static pointer to the current "Save SSL Follow Stream As" window, if
* any, so that if somebody tries to do "Save"
* while there's already a "Save SSL Follow Stream" window up, we just pop
* up the existing one, rather than creating a new one.
*/
static void
follow_save_as_cmd_cb(GtkWidget *w _U_, gpointer data)
{
GtkWidget *new_win;
follow_info_t *follow_info = data;
if (follow_info->follow_save_as_w != NULL) {
/* There's already a dialog box; reactivate it. */
reactivate_window(follow_info->follow_save_as_w);
return;
}
new_win = file_selection_new("Ethereal: Save SSL Follow Stream As",
FILE_SELECTION_SAVE);
follow_info->follow_save_as_w = new_win;
/* Tuck away the follow_info object into the window */
OBJECT_SET_DATA(new_win, E_FOLLOW_INFO_KEY, follow_info);
SIGNAL_CONNECT(new_win, "destroy", follow_save_as_destroy_cb, follow_info);
#if (GTK_MAJOR_VERSION == 2 && GTK_MINOR_VERSION >= 4) || GTK_MAJOR_VERSION > 2
if (gtk_dialog_run(GTK_DIALOG(new_win)) == GTK_RESPONSE_ACCEPT)
{
follow_save_as_ok_cb(new_win, new_win);
} else {
window_destroy(new_win);
}
#else
/* Connect the ok_button to file_save_as_ok_cb function and pass along a
pointer to the file selection box widget */
SIGNAL_CONNECT(GTK_FILE_SELECTION(new_win)->ok_button,
"clicked", follow_save_as_ok_cb, new_win);
window_set_cancel_button(new_win,
GTK_FILE_SELECTION(new_win)->cancel_button, window_cancel_button_cb);
gtk_file_selection_set_filename(GTK_FILE_SELECTION(new_win), "");
SIGNAL_CONNECT(new_win, "delete_event", window_delete_event_cb, NULL);
gtk_widget_show_all(new_win);
window_present(new_win);
#endif
}
static void
follow_save_as_ok_cb(GtkWidget * w _U_, gpointer fs)
{
gchar *to_name;
follow_info_t *follow_info;
FILE *fh;
print_stream_t *stream = NULL;
gchar *dirname;
#if (GTK_MAJOR_VERSION == 2 && GTK_MINOR_VERSION >= 4) || GTK_MAJOR_VERSION > 2
to_name = g_strdup(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs)));
#else
to_name = g_strdup(gtk_file_selection_get_filename(GTK_FILE_SELECTION(fs)));
#endif
/* Perhaps the user specified a directory instead of a file.
Check whether they did. */
if (test_for_directory(to_name) == EISDIR) {
/* It's a directory - set the file selection box to display that
directory, and leave the selection box displayed. */
set_last_open_dir(to_name);
g_free(to_name);
file_selection_set_current_folder(fs, get_last_open_dir());
return;
}
follow_info = OBJECT_GET_DATA(fs, E_FOLLOW_INFO_KEY);
if (follow_info->show_type == SHOW_RAW) {
/* Write the data out as raw binary data */
fh = eth_fopen(to_name, "wb");
} else {
/* Write it out as text */
fh = eth_fopen(to_name, "w");
}
if (fh == NULL) {
open_failure_alert_box(to_name, errno, TRUE);
g_free(to_name);
return;
}
gtk_widget_hide(GTK_WIDGET(fs));
window_destroy(GTK_WIDGET(fs));
if (follow_info->show_type == SHOW_RAW) {
switch (follow_read_stream(follow_info, follow_write_raw, fh)) {
case FRS_OK:
if (fclose(fh) == EOF)
write_failure_alert_box(to_name, errno);
break;
case FRS_OPEN_ERROR:
case FRS_READ_ERROR:
fclose(fh);
break;
case FRS_PRINT_ERROR:
write_failure_alert_box(to_name, errno);
fclose(fh);
break;
}
} else {
stream = print_stream_text_stdio_new(fh);
switch (follow_read_stream(follow_info, follow_print_text, stream)) {
case FRS_OK:
if (!destroy_print_stream(stream))
write_failure_alert_box(to_name, errno);
break;
case FRS_OPEN_ERROR:
case FRS_READ_ERROR:
destroy_print_stream(stream);
break;
case FRS_PRINT_ERROR:
write_failure_alert_box(to_name, errno);
destroy_print_stream(stream);
break;
}
}
/* Save the directory name for future file dialogs. */
dirname = get_dirname(to_name); /* Overwrites to_name */
set_last_open_dir(dirname);
g_free(to_name);
}
static void
follow_save_as_destroy_cb(GtkWidget * win _U_, gpointer data)
{
follow_info_t *follow_info = data;
/* Note that we no longer have a dialog box. */
follow_info->follow_save_as_w = NULL;
}
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