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wireshark/prefs.c

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/* prefs.c
* Routines for handling preferences
*
* $Id: prefs.c,v 1.16 1999/03/01 18:57:01 gram Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <gtk/gtk.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include "ethereal.h"
#include "packet.h"
#include "file.h"
#include "prefs.h"
#include "column.h"
#include "print.h"
#include "filter.h"
#include "util.h"
/* Internal functions */
static int set_pref(gchar*, gchar*);
static void write_prefs();
static void prefs_main_ok_cb(GtkWidget *, gpointer);
static void prefs_main_save_cb(GtkWidget *, gpointer);
static void prefs_main_cancel_cb(GtkWidget *, gpointer);
static GList *get_string_list(gchar *);
static void clear_string_list(GList *);
e_prefs prefs;
static int init_prefs = 1;
#define PF_NAME "preferences"
#define E_PRINT_PAGE_KEY "printer_options_page"
#define E_FILTER_PAGE_KEY "filter_options_page"
#define E_COLUMN_PAGE_KEY "column_options_page"
static gchar *pf_path = NULL;
void
prefs_cb(GtkWidget *w, gpointer sp) {
GtkWidget *prefs_w, *main_vb, *top_hb, *bbox, *prefs_nb,
*ok_bt, *save_bt, *cancel_bt;
GtkWidget *print_pg, *filter_pg, *column_pg, *filter_te, *label;
/* GtkWidget *nlabel; */
gint start_page = (gint) sp;
filter_pg = NULL;
filter_te = NULL;
prefs_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(prefs_w), "Ethereal: Preferences");
/* Container for each row of widgets */
main_vb = gtk_vbox_new(FALSE, 5);
gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
gtk_container_add(GTK_CONTAINER(prefs_w), main_vb);
gtk_widget_show(main_vb);
/* Top row: Preferences notebook */
top_hb = gtk_hbox_new(FALSE, 1);
gtk_container_add(GTK_CONTAINER(main_vb), top_hb);
gtk_widget_show(top_hb);
prefs_nb = gtk_notebook_new();
gtk_container_add(GTK_CONTAINER(main_vb), prefs_nb);
gtk_widget_show(prefs_nb);
/* General prefs */
/* nlabel = gtk_label_new("Nothing here yet...");
gtk_widget_show (nlabel);
label = gtk_label_new ("General");
gtk_notebook_append_page (GTK_NOTEBOOK(prefs_nb), nlabel, label);
*/
/* Printing prefs */
print_pg = printer_prefs_show();
gtk_object_set_data(GTK_OBJECT(prefs_w), E_PRINT_PAGE_KEY, print_pg);
label = gtk_label_new ("Printing");
gtk_notebook_append_page (GTK_NOTEBOOK(prefs_nb), print_pg, label);
/* Filter prefs */
if (w)
filter_te = gtk_object_get_data(GTK_OBJECT(w), E_FILT_TE_PTR_KEY);
filter_pg = filter_prefs_show(filter_te);
/* Pass along the entry widget pointer from the calling widget */
gtk_object_set_data(GTK_OBJECT(filter_pg), E_FILT_TE_PTR_KEY, filter_te);
gtk_object_set_data(GTK_OBJECT(prefs_w), E_FILTER_PAGE_KEY, filter_pg);
label = gtk_label_new ("Filters");
gtk_notebook_append_page (GTK_NOTEBOOK(prefs_nb), filter_pg, label);
/* Column prefs */
column_pg = column_prefs_show();
gtk_object_set_data(GTK_OBJECT(prefs_w), E_COLUMN_PAGE_KEY, column_pg);
label = gtk_label_new ("Columns");
gtk_notebook_append_page (GTK_NOTEBOOK(prefs_nb), column_pg, label);
/* Jump to the specified page, if it was supplied */
if (start_page > E_PR_PG_NONE)
gtk_notebook_set_page(GTK_NOTEBOOK(prefs_nb), start_page);
/* Button row: OK and cancel buttons */
bbox = gtk_hbutton_box_new();
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);
gtk_container_add(GTK_CONTAINER(main_vb), bbox);
gtk_widget_show(bbox);
ok_bt = gtk_button_new_with_label ("OK");
gtk_signal_connect_object(GTK_OBJECT(ok_bt), "clicked",
GTK_SIGNAL_FUNC(prefs_main_ok_cb), GTK_OBJECT(prefs_w));
GTK_WIDGET_SET_FLAGS(ok_bt, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (bbox), ok_bt, TRUE, TRUE, 0);
gtk_widget_grab_default(ok_bt);
gtk_widget_show(ok_bt);
save_bt = gtk_button_new_with_label ("Save");
gtk_signal_connect_object(GTK_OBJECT(save_bt), "clicked",
GTK_SIGNAL_FUNC(prefs_main_save_cb), GTK_OBJECT(prefs_w));
GTK_WIDGET_SET_FLAGS(save_bt, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (bbox), save_bt, TRUE, TRUE, 0);
gtk_widget_show(save_bt);
cancel_bt = gtk_button_new_with_label ("Cancel");
gtk_signal_connect_object(GTK_OBJECT(cancel_bt), "clicked",
GTK_SIGNAL_FUNC(prefs_main_cancel_cb), GTK_OBJECT(prefs_w));
GTK_WIDGET_SET_FLAGS(cancel_bt, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (bbox), cancel_bt, TRUE, TRUE, 0);
gtk_widget_show(cancel_bt);
gtk_widget_show(prefs_w);
}
void
prefs_main_ok_cb(GtkWidget *w, gpointer win) {
#ifdef GTK_HAVE_FEATURES_1_1_0
win = w;
#endif
printer_prefs_ok(gtk_object_get_data(GTK_OBJECT(win), E_PRINT_PAGE_KEY));
filter_prefs_ok(gtk_object_get_data(GTK_OBJECT(win), E_FILTER_PAGE_KEY));
column_prefs_ok(gtk_object_get_data(GTK_OBJECT(win), E_COLUMN_PAGE_KEY));
gtk_widget_destroy(GTK_WIDGET(win));
}
void
prefs_main_save_cb(GtkWidget *w, gpointer win) {
#ifdef GTK_HAVE_FEATURES_1_1_0
win = w;
#endif
printer_prefs_save(gtk_object_get_data(GTK_OBJECT(win), E_PRINT_PAGE_KEY));
filter_prefs_save(gtk_object_get_data(GTK_OBJECT(win), E_FILTER_PAGE_KEY));
column_prefs_save(gtk_object_get_data(GTK_OBJECT(win), E_COLUMN_PAGE_KEY));
write_prefs();
}
void
prefs_main_cancel_cb(GtkWidget *w, gpointer win) {
#ifdef GTK_HAVE_FEATURES_1_1_0
win = w;
#endif
printer_prefs_cancel(gtk_object_get_data(GTK_OBJECT(win), E_PRINT_PAGE_KEY));
filter_prefs_cancel(gtk_object_get_data(GTK_OBJECT(win), E_FILTER_PAGE_KEY));
column_prefs_cancel(gtk_object_get_data(GTK_OBJECT(win), E_COLUMN_PAGE_KEY));
gtk_widget_destroy(GTK_WIDGET(win));
}
/* Parse through a list of comma-separated, quoted strings. Return a
list of the string data */
static GList *
get_string_list(gchar *str) {
enum { PRE_QUOT, IN_QUOT, POST_QUOT };
gint state = PRE_QUOT, i = 0, j = 0;
gboolean backslash = FALSE;
gchar cur_c, *slstr = NULL;
GList *sl = NULL;
while ((cur_c = str[i]) != '\0') {
if (cur_c == '"' && ! backslash) {
switch (state) {
case PRE_QUOT:
state = IN_QUOT;
slstr = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
j = 0;
break;
case IN_QUOT:
state = POST_QUOT;
slstr[j] = '\0';
sl = g_list_append(sl, slstr);
break;
case POST_QUOT:
clear_string_list(sl);
return NULL;
break;
default:
break;
}
} else if (cur_c == '\\' && ! backslash) {
backslash = TRUE;
} else if (cur_c == ',' && state == POST_QUOT) {
state = PRE_QUOT;
} else if (state == IN_QUOT && j < COL_MAX_LEN) {
slstr[j] = str[i];
j++;
}
i++;
}
if (state != POST_QUOT) {
clear_string_list(sl);
}
return(sl);
}
void
clear_string_list(GList *sl) {
GList *l = sl;
while (l) {
g_free(l->data);
l = g_list_remove_link(l, l);
}
}
/* Preferences file format:
* - Configuration directives start at the beginning of the line, and
* are terminated with a colon.
* - Directives can be continued on the next line by preceding them with
* whitespace.
*
* Example:
# This is a comment line
print.command: lpr
print.file: /a/very/long/path/
to/ethereal-out.ps
*
*/
#define MAX_VAR_LEN 32
#define MAX_VAL_LEN 1024
#define DEF_NUM_COLS 6
e_prefs *
read_prefs() {
enum { START, IN_VAR, PRE_VAL, IN_VAL, IN_SKIP };
FILE *pf;
gchar cur_var[MAX_VAR_LEN], cur_val[MAX_VAL_LEN];
int got_c, state = START, i;
gint var_len = 0, val_len = 0, fline = 1, pline = 1;
gboolean got_val = FALSE;
fmt_data *cfmt;
gchar *col_fmt[] = {"No.", "%m", "Time", "%t",
"Source", "%s", "Destination", "%d",
"Protocol", "%p", "Info", "%i"};
/* Initialize preferences. With any luck, these values will be
overwritten below. */
if (init_prefs) {
init_prefs = 0;
prefs.pr_format = PR_FMT_TEXT;
prefs.pr_dest = PR_DEST_CMD;
prefs.pr_file = g_strdup("ethereal.out");
prefs.pr_cmd = g_strdup("lpr");
prefs.col_list = NULL;
for (i = 0; i < DEF_NUM_COLS; i++) {
cfmt = (fmt_data *) g_malloc(sizeof(fmt_data));
cfmt->title = g_strdup(col_fmt[i * 2]);
cfmt->fmt = g_strdup(col_fmt[(i * 2) + 1]);
prefs.col_list = g_list_append(prefs.col_list, cfmt);
}
prefs.num_cols = DEF_NUM_COLS;
}
if (! pf_path) {
pf_path = (gchar *) g_malloc(strlen(getenv("HOME")) + strlen(PF_DIR) +
strlen(PF_NAME) + 4);
sprintf(pf_path, "%s/%s/%s", getenv("HOME"), PF_DIR, PF_NAME);
}
if ((pf = fopen(pf_path, "r")) == NULL) {
if (errno != ENOENT) {
simple_dialog(ESD_TYPE_WARN, NULL,
"Can't open preferences file\n\"%s\".", pf_path);
}
return &prefs;
}
while ((got_c = getc(pf)) != EOF) {
if (got_c == '\n') {
state = START;
fline++;
continue;
}
if (var_len >= MAX_VAR_LEN) {
g_warning ("%s line %d: Variable too long", pf_path, fline);
state = IN_SKIP;
var_len = 0;
continue;
}
if (val_len >= MAX_VAL_LEN) {
g_warning ("%s line %d: Value too long", pf_path, fline);
state = IN_SKIP;
var_len = 0;
continue;
}
switch (state) {
case START:
if (isalnum(got_c)) {
if (var_len > 0) {
if (got_val) {
cur_var[var_len] = '\0';
cur_val[val_len] = '\0';
if (! set_pref(cur_var, cur_val))
g_warning ("%s line %d: Bogus preference", pf_path, pline);
} else {
g_warning ("%s line %d: Incomplete preference", pf_path, pline);
}
}
state = IN_VAR;
got_val = FALSE;
cur_var[0] = got_c;
var_len = 1;
pline = fline;
} else if (isspace(got_c) && var_len > 0 && got_val) {
state = PRE_VAL;
} else if (got_c == '#') {
state = IN_SKIP;
} else {
g_warning ("%s line %d: Malformed line", pf_path, fline);
}
break;
case IN_VAR:
if (got_c != ':') {
cur_var[var_len] = got_c;
var_len++;
} else {
state = PRE_VAL;
val_len = 0;
got_val = TRUE;
}
break;
case PRE_VAL:
if (!isspace(got_c)) {
state = IN_VAL;
cur_val[val_len] = got_c;
val_len++;
}
break;
case IN_VAL:
if (got_c != '#') {
cur_val[val_len] = got_c;
val_len++;
} else {
while (isspace(cur_val[val_len]) && val_len > 0)
val_len--;
state = IN_SKIP;
}
break;
}
}
if (var_len > 0) {
if (got_val) {
cur_var[var_len] = '\0';
cur_val[val_len] = '\0';
if (! set_pref(cur_var, cur_val))
g_warning ("%s line %d: Bogus preference", pf_path, pline);
} else {
g_warning ("%s line %d: Incomplete preference", pf_path, pline);
}
}
fclose(pf);
return &prefs;
}
#define PRS_PRINT_FMT "print.format"
#define PRS_PRINT_DEST "print.destination"
#define PRS_PRINT_FILE "print.file"
#define PRS_PRINT_CMD "print.command"
#define PRS_COL_FMT "column.format"
static gchar *pr_formats[] = { "text", "postscript" };
static gchar *pr_dests[] = { "command", "file" };
int
set_pref(gchar *pref, gchar *value) {
GList *col_l;
gint llen;
fmt_data *cfmt;
if (strcmp(pref, PRS_PRINT_FMT) == 0) {
if (strcmp(value, pr_formats[PR_FMT_TEXT]) == 0) {
prefs.pr_format = PR_FMT_TEXT;
} else if (strcmp(value, pr_formats[PR_FMT_PS]) == 0) {
prefs.pr_format = PR_FMT_PS;
} else {
return 0;
}
} else if (strcmp(pref, PRS_PRINT_DEST) == 0) {
if (strcmp(value, pr_dests[PR_DEST_CMD]) == 0) {
prefs.pr_dest = PR_DEST_CMD;
} else if (strcmp(value, pr_dests[PR_DEST_FILE]) == 0) {
prefs.pr_dest = PR_DEST_FILE;
} else {
return 0;
}
} else if (strcmp(pref, PRS_PRINT_FILE) == 0) {
if (prefs.pr_file) g_free(prefs.pr_file);
prefs.pr_file = g_strdup(value);
} else if (strcmp(pref, PRS_PRINT_CMD) == 0) {
if (prefs.pr_cmd) g_free(prefs.pr_cmd);
prefs.pr_cmd = g_strdup(value);
} else if (strcmp(pref, PRS_COL_FMT) == 0) {
if ((col_l = get_string_list(value)) && (g_list_length(col_l) % 2) == 0) {
while (prefs.col_list) {
cfmt = prefs.col_list->data;
g_free(cfmt->title);
g_free(cfmt->fmt);
g_free(cfmt);
prefs.col_list = g_list_remove_link(prefs.col_list, prefs.col_list);
}
llen = g_list_length(col_l);
prefs.num_cols = llen / 2;
col_l = g_list_first(col_l);
while(col_l) {
cfmt = (fmt_data *) g_malloc(sizeof(fmt_data));
cfmt->title = g_strdup(col_l->data);
col_l = col_l->next;
cfmt->fmt = g_strdup(col_l->data);
col_l = col_l->next;
prefs.col_list = g_list_append(prefs.col_list, cfmt);
}
/* To do: else print some sort of error? */
}
clear_string_list(col_l);
} else {
return 0;
}
return 1;
}
void
write_prefs() {
FILE *pf;
struct stat s_buf;
/* To do:
* - Split output lines longer than MAX_VAL_LEN
* - Create a function for the preference directory check/creation
* so that duplication can be avoided with filter.c
*/
if (! pf_path) {
pf_path = (gchar *) g_malloc(strlen(getenv("HOME")) + strlen(PF_DIR) +
strlen(PF_NAME) + 4);
}
sprintf(pf_path, "%s/%s", getenv("HOME"), PF_DIR);
if (stat(pf_path, &s_buf) != 0)
mkdir(pf_path, 0755);
sprintf(pf_path, "%s/%s/%s", getenv("HOME"), PF_DIR, PF_NAME);
if ((pf = fopen(pf_path, "w")) == NULL) {
simple_dialog(ESD_TYPE_WARN, NULL,
"Can't open preferences file\n\"%s\".", pf_path);
return;
}
fputs("# Configuration file for Ethereal " VERSION ".\n"
"#\n"
"# This file is regenerated each time preferences are saved within\n"
"# Ethereal. Making manual changes should be safe, however.\n"
"\n"
"######## Printing ########\n"
"\n", pf);
fprintf (pf, "# Can be one of \"text\" or \"postscript\".\n"
"print.format: %s\n\n", pr_formats[prefs.pr_format]);
fprintf (pf, "# Can be one of \"command\" or \"file\".\n"
"print.destination: %s\n\n", pr_dests[prefs.pr_dest]);
fprintf (pf, "# This is the file that gets written to when the "
"destination is set to \"file\"\n"
"%s: %s\n\n", PRS_PRINT_FILE, prefs.pr_file);
fprintf (pf, "# Output gets piped to this command when the destination "
"is set to \"command\"\n"
"%s: %s\n\n", PRS_PRINT_CMD, prefs.pr_cmd);
fprintf (pf, "# Packet list column format. Each pair of strings consists "
"of a column title \n# and its format.\n"
"%s: %s\n\n", PRS_COL_FMT, col_format_to_pref_str());
fclose(pf);
}
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