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Cleanup follow stream code 

Adding Follow HTTP Stream justified some refactoring and code removal.

Change-Id: I9b7ace83f8517e880e78193bb97ac32e3fc91114
Reviewed-on: https://code.wireshark.org/review/13015
Reviewed-by: Michael Mann <mmann78@netscape.net>
This commit is contained in:
Michael Mann 2016-01-02 21:48:13 -05:00
parent 1fed5fef9a
commit 5dd1401291
10 changed files with 47 additions and 170 deletions
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1
ui/CMakeLists.txt
View File

@ -32,7 +32,6 @@ set(COMMON_UI_SRC
export_object_smb.c
export_object_tftp.c
filters.c
follow.c
help_url.c
iface_lists.c
io_graph_item.c

1
ui/Makefile.common
View File

@ -53,7 +53,6 @@ WIRESHARK_UI_SRC = \
export_object_smb.c \
export_object_tftp.c \
filters.c \
follow.c \
iface_lists.c \
io_graph_item.c \
language.c \

122
ui/follow.c
View File

@ -1,122 +0,0 @@
/* follow.c
*
* 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
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include "ui/follow.h"
#ifdef HAVE_LIBZ
static char *
sgetline(char *str, int *next)
{
char *end;
end = strstr(str, "\r\n");
if (!end) {
*next = (int)strlen(str);
return NULL;
}
*end = '\0';
*next = (int)(end-str+2);
return str;
}
gboolean
parse_http_header(char *data, size_t len, size_t *content_start)
{
char *tmp, *copy, *line;
size_t pos = 0;
int next_line;
gboolean is_gzipped;
/* XXX handle case where only partial header is passed in here.
* we should pass something back to indicate whether header is complete.
* (if not, is_gzipped is may still be unknown)
*/
/*
* In order to parse header, we duplicate data and tokenize lines.
* We aren't interested in actual data, so use g_strndup instead of memcpy
* to (possibly) copy fewer bytes (e.g., if a nul byte exists in data)
* This also ensures that we have a terminated string for further
* processing.
*/
tmp = copy = g_strndup(data, len);
if (!tmp) {
*content_start = 0;
return FALSE;
}
/* skip HTTP... line*/
/*line = */sgetline(tmp, &next_line);
tmp += next_line;
pos += next_line;
is_gzipped = FALSE;
*content_start = -1;
while ((line = sgetline(tmp, &next_line))) {
char *key, *val, *c;
tmp += next_line;
pos += next_line;
if (strlen(line) == 0) {
/* end of header*/
break;
}
c = strchr(line, ':');
if (!c) break;
key = line;
*c = '\0';
val = c+2;
if (!strcmp(key, "Content-Encoding") && strstr(val, "gzip")) {
is_gzipped = TRUE;
}
}
*content_start = pos;
g_free(copy);
return is_gzipped;
}
#endif
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/

5
ui/follow.h
View File

@ -79,11 +79,6 @@ typedef struct {
GByteArray *data;
} follow_record_t;
#ifdef HAVE_LIBZ
gboolean
parse_http_header(char *data, size_t len, size_t *content_start);
#endif
#ifdef __cplusplus
}
#endif

10
ui/gtk/follow_http.c
View File

@ -40,6 +40,9 @@
#include "ui/gtk/main.h"
#include "ui/gtk/follow_http.h"
static frs_return_t
follow_read_http_stream(follow_info_t *follow_info, follow_print_line_func follow_print, void *arg);
static gboolean
http_queue_packet_data(void *tapdata, packet_info *pinfo,
epan_dissect_t *edt _U_, const void *data)
@ -103,6 +106,7 @@ follow_http_stream_cb(GtkWidget *w _U_, gpointer data _U_)
follow_info = g_new0(follow_info_t, 1);
follow_info->follow_type = FOLLOW_HTTP;
follow_info->read_stream = follow_read_http_stream;
/* Create a new filter that matches all packets in the HTTP stream,
and set the display filter entry accordingly */
@ -248,9 +252,9 @@ follow_http_stream_cb(GtkWidget *w _U_, gpointer data _U_)
* This might or might not be the reason why C arrays display
* correctly but get extra blank lines very other line when printed.
*/
frs_return_t
static frs_return_t
follow_read_http_stream(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
void *arg)
{
guint32 global_client_pos = 0, global_server_pos = 0;
@ -283,7 +287,7 @@ follow_read_http_stream(follow_info_t *follow_info,
buffer = (char *)g_memdup(follow_record->data->data,
follow_record->data->len);
frs_return = follow_show(follow_info, print_line_fcn_p,
frs_return = follow_show(follow_info, follow_print,
buffer,
follow_record->data->len,
follow_record->is_server, arg,

11
ui/gtk/follow_ssl.c
View File

@ -61,6 +61,10 @@
#include <epan/dissectors/packet-ssl-utils.h>
#endif
static frs_return_t
follow_read_ssl_stream(follow_info_t *follow_info, follow_print_line_func follow_print, void *arg);
static gboolean
ssl_queue_packet_data(void *tapdata, packet_info *pinfo, epan_dissect_t *edt _U_, const void *ssl)
{
@ -156,6 +160,7 @@ follow_ssl_stream_cb(GtkWidget * w _U_, gpointer data _U_)
follow_info = g_new0(follow_info_t, 1);
follow_info->follow_type = FOLLOW_SSL;
follow_info->read_stream = follow_read_ssl_stream;
/* Create a new filter that matches all packets in the SSL stream,
and set the display filter entry accordingly */
@ -300,9 +305,9 @@ follow_ssl_stream_cb(GtkWidget * w _U_, gpointer data _U_)
* This might or might not be the reason why C arrays display
* correctly but get extra blank lines very other line when printed.
*/
frs_return_t
static frs_return_t
follow_read_ssl_stream(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
void *arg)
{
guint32 global_client_pos = 0, global_server_pos = 0;
@ -330,7 +335,7 @@ follow_read_ssl_stream(follow_info_t *follow_info,
size_t nchars = rec->data.data_len;
gchar *buffer = (gchar *)g_memdup(rec->data.data, (guint) nchars);
frs_return = follow_show(follow_info, print_line_fcn_p, buffer, nchars,
frs_return = follow_show(follow_info, follow_print, buffer, nchars,
rec->is_from_server, arg, global_pos,
&server_packet_count, &client_packet_count);
g_free(buffer);

32
ui/gtk/follow_stream.c
View File

@ -76,24 +76,12 @@ follow_read_stream(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
void *arg)
{
switch(follow_info->follow_type) {
case FOLLOW_TCP :
return follow_read_tcp_stream(follow_info, print_line_fcn_p, arg);
case FOLLOW_UDP :
return follow_read_udp_stream(follow_info, print_line_fcn_p, arg);
case FOLLOW_SSL :
return follow_read_ssl_stream(follow_info, print_line_fcn_p, arg);
case FOLLOW_HTTP :
return follow_read_http_stream(follow_info, print_line_fcn_p, arg);
default :
if (follow_info->read_stream == NULL) {
g_assert_not_reached();
return (frs_return_t)0;
}
return follow_info->read_stream(follow_info, print_line_fcn_p, arg);
}
gboolean
@ -903,7 +891,7 @@ follow_destroy_cb(GtkWidget *w, gpointer data _U_)
frs_return_t
follow_show(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
char *buffer, size_t nchars, gboolean is_from_server, void *arg,
guint32 *global_pos, guint32 *server_packet_count,
guint32 *client_packet_count)
@ -917,7 +905,7 @@ follow_show(follow_info_t *follow_info,
case SHOW_EBCDIC:
/* If our native arch is ASCII, call: */
EBCDIC_to_ASCII(buffer, (guint) nchars);
if (!(*print_line_fcn_p) (buffer, nchars, is_from_server, arg))
if (!follow_print(buffer, nchars, is_from_server, arg))
return FRS_PRINT_ERROR;
break;
@ -925,7 +913,7 @@ follow_show(follow_info_t *follow_info,
/* If our native arch is EBCDIC, call:
* ASCII_TO_EBCDIC(buffer, nchars);
*/
if (!(*print_line_fcn_p) (buffer, nchars, is_from_server, arg))
if (!follow_print(buffer, nchars, is_from_server, arg))
return FRS_PRINT_ERROR;
break;
@ -933,7 +921,7 @@ follow_show(follow_info_t *follow_info,
/* Don't translate, no matter what the native arch
* is.
*/
if (!(*print_line_fcn_p) (buffer, nchars, is_from_server, arg))
if (!follow_print(buffer, nchars, is_from_server, arg))
return FRS_PRINT_ERROR;
break;
@ -980,7 +968,7 @@ follow_show(follow_info_t *follow_info,
(*global_pos) += i;
*cur++ = '\n';
*cur = 0;
if (!(*print_line_fcn_p) (hexbuf, strlen(hexbuf), is_from_server, arg))
if (!follow_print(hexbuf, strlen(hexbuf), is_from_server, arg))
return FRS_PRINT_ERROR;
}
break;
@ -990,7 +978,7 @@ follow_show(follow_info_t *follow_info,
g_snprintf(initbuf, sizeof(initbuf), "char peer%d_%d[] = {\n",
is_from_server ? 1 : 0,
is_from_server ? (*server_packet_count)++ : (*client_packet_count)++);
if (!(*print_line_fcn_p) (initbuf, strlen(initbuf), is_from_server, arg))
if (!follow_print(initbuf, strlen(initbuf), is_from_server, arg))
return FRS_PRINT_ERROR;
while (current_pos < nchars) {
@ -1022,7 +1010,7 @@ follow_show(follow_info_t *follow_info,
(*global_pos) += i;
hexbuf[cur++] = '\n';
hexbuf[cur] = 0;
if (!(*print_line_fcn_p) (hexbuf, strlen(hexbuf), is_from_server, arg))
if (!follow_print(hexbuf, strlen(hexbuf), is_from_server, arg))
return FRS_PRINT_ERROR;
}
break;

15
ui/gtk/follow_stream.h
View File

@ -27,7 +27,12 @@
#include <gtk/gtk.h>
#include <ui/follow.h>
typedef struct {
struct _follow_info;
typedef gboolean (*follow_print_line_func)(char *, size_t, gboolean, void *);
typedef frs_return_t (*follow_read_stream_func)(struct _follow_info *follow_info, follow_print_line_func follow_print, void *arg);
typedef struct _follow_info {
follow_type_t follow_type;
show_stream_t show_stream;
show_type_t show_type;
@ -47,6 +52,7 @@ typedef struct {
guint bytes_written[2]; /* Index with FROM_CLIENT or FROM_SERVER for readability. */
guint client_port;
address client_ip;
follow_read_stream_func read_stream;
} follow_info_t;
#define E_FOLLOW_INFO_KEY "follow_info_key"
@ -62,7 +68,7 @@ void follow_stream(const gchar *title, follow_info_t *follow_info,
gchar *server_to_client_string,
gchar *client_to_server_string);
frs_return_t follow_show(follow_info_t *follow_info,
gboolean (*print_line)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
char *buffer, size_t nchars, gboolean is_server,
void *arg, guint32 *global_pos,
guint32 *server_packet_count,
@ -70,11 +76,6 @@ frs_return_t follow_show(follow_info_t *follow_info,
gboolean follow_add_to_gtk_text(char *buffer, size_t nchars, gboolean is_server,
void *arg);
frs_return_t follow_read_http_stream(follow_info_t *follow_info, gboolean (*print_line)(char *, size_t, gboolean, void *), void *arg);
frs_return_t follow_read_tcp_stream(follow_info_t *follow_info, gboolean (*print_line)(char *, size_t, gboolean, void *), void *arg);
frs_return_t follow_read_udp_stream(follow_info_t *follow_info, gboolean (*print_line)(char *, size_t, gboolean, void *), void *arg);
frs_return_t follow_read_ssl_stream(follow_info_t *follow_info, gboolean (*print_line)(char *, size_t, gboolean, void *), void *arg);
#endif /* __FOLLOW_STREAM_H__ */
/*

10
ui/gtk/follow_tcp.c
View File

@ -56,6 +56,9 @@
#include "ui/gtk/follow_stream.h"
#include "ws_symbol_export.h"
static frs_return_t
follow_read_tcp_stream(follow_info_t *follow_info, follow_print_line_func follow_print, void *arg);
/* With MSVC and a libwireshark.dll, we need a special declaration. */
WS_DLL_PUBLIC FILE *data_out_file;
@ -108,6 +111,7 @@ follow_tcp_stream_cb(GtkWidget * w _U_, gpointer data _U_)
follow_info = g_new0(follow_info_t, 1);
follow_info->follow_type = FOLLOW_TCP;
follow_info->read_stream = follow_read_tcp_stream;
/* Create a new filter that matches all packets in the TCP stream,
and set the display filter entry accordingly */
@ -328,9 +332,9 @@ follow_tcp_stream_cb(GtkWidget * w _U_, gpointer data _U_)
* This might or might not be the reason why C arrays display
* correctly but get extra blank lines very other line when printed.
*/
frs_return_t
static frs_return_t
follow_read_tcp_stream(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
void *arg)
{
tcp_stream_chunk sc;
@ -401,7 +405,7 @@ follow_read_tcp_stream(follow_info_t *follow_info,
bytes_read += nchars;
if (!skip) {
frs_return = follow_show(follow_info, print_line_fcn_p, buffer,
frs_return = follow_show(follow_info, follow_print, buffer,
nchars, is_server, arg, global_pos,
&server_packet_count,
&client_packet_count);

10
ui/gtk/follow_udp.c
View File

@ -40,6 +40,9 @@
#include "ui/gtk/main.h"
#include "ui/gtk/follow_udp.h"
static frs_return_t
follow_read_udp_stream(follow_info_t *follow_info, follow_print_line_func follow_print, void *arg);
static gboolean
udp_queue_packet_data(void *tapdata, packet_info *pinfo,
epan_dissect_t *edt _U_, const void *data)
@ -103,6 +106,7 @@ follow_udp_stream_cb(GtkWidget *w _U_, gpointer data _U_)
follow_info = g_new0(follow_info_t, 1);
follow_info->follow_type = FOLLOW_UDP;
follow_info->read_stream = follow_read_udp_stream;
/* Create a new filter that matches all packets in the UDP stream,
and set the display filter entry accordingly */
@ -248,9 +252,9 @@ follow_udp_stream_cb(GtkWidget *w _U_, gpointer data _U_)
* This might or might not be the reason why C arrays display
* correctly but get extra blank lines very other line when printed.
*/
frs_return_t
static frs_return_t
follow_read_udp_stream(follow_info_t *follow_info,
gboolean (*print_line_fcn_p)(char *, size_t, gboolean, void *),
follow_print_line_func follow_print,
void *arg)
{
guint32 global_client_pos = 0, global_server_pos = 0;
@ -283,7 +287,7 @@ follow_read_udp_stream(follow_info_t *follow_info,
buffer = (char *)g_memdup(follow_record->data->data,
follow_record->data->len);
frs_return = follow_show(follow_info, print_line_fcn_p,
frs_return = follow_show(follow_info, follow_print,
buffer,
follow_record->data->len,
follow_record->is_server, arg,