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wireshark/prefs.c

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/* prefs.c
* Routines for handling preferences
*
* $Id: prefs.c,v 1.31 2000/07/05 09:40:41 guy 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
#ifdef HAVE_DIRECT_H
#include <direct.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/stat.h>
#include "globals.h"
#include "packet.h"
#include "file.h"
#include "prefs.h"
#include "column.h"
#include "print.h"
#include "util.h"
#include "prefs-int.h"
/* Internal functions */
static int set_pref(gchar*, gchar*);
static GList *get_string_list(gchar *);
static void clear_string_list(GList *);
#define PF_NAME "preferences"
#define GPF_PATH DATAFILE_DIR "/ethereal.conf"
static gboolean init_prefs = TRUE;
static gchar *pf_path = NULL;
e_prefs prefs;
gchar *gui_ptree_line_style_text[] =
{ "NONE", "SOLID", "DOTTED", "TABBED", NULL };
gchar *gui_ptree_expander_style_text[] =
{ "NONE", "SQUARE", "TRIANGLE", "CIRCULAR", NULL };
/*
* List of modules with preference settings.
*/
static GList *modules;
/*
* Register a module that will have preferences.
* Specify the name used for the module in the preferences file, the
* title used in the tab for it in a preferences dialog box, and a
* routine to call back when we apply the preferences.
*/
module_t *
prefs_register_module(const char *name, const char *title,
void (*apply_cb)(void))
{
module_t *module;
module = g_malloc(sizeof (module_t));
module->name = name;
module->title = title;
module->apply_cb = apply_cb;
module->prefs = NULL; /* no preferences, to start */
module->numprefs = 0;
modules = g_list_append(modules, module);
return module;
}
/*
* Find a module, given its name.
*/
static gint
module_match(gconstpointer a, gconstpointer b)
{
const module_t *module = a;
const char *name = b;
return strcmp(name, module->name);
}
static module_t *
find_module(char *name)
{
GList *list_entry;
list_entry = g_list_find_custom(modules, name, module_match);
if (list_entry == NULL)
return NULL; /* no such module */
return (module_t *) list_entry->data;
}
typedef struct {
module_cb callback;
gpointer user_data;
} module_cb_arg_t;
static void
do_module_callback(gpointer data, gpointer user_data)
{
module_t *module = data;
module_cb_arg_t *arg = user_data;
(*arg->callback)(module, arg->user_data);
}
/*
* Call a callback function, with a specified argument, for each module.
*/
void
prefs_module_foreach(module_cb callback, gpointer user_data)
{
module_cb_arg_t arg;
arg.callback = callback;
arg.user_data = user_data;
g_list_foreach(modules, do_module_callback, &arg);
}
static void
call_apply_cb(gpointer data, gpointer user_data)
{
module_t *module = data;
(*module->apply_cb)();
}
/*
* Call the "apply" callback function for each module.
*/
void
prefs_apply_all(void)
{
g_list_foreach(modules, call_apply_cb, NULL);
}
/*
* Register a preference in a module's list of preferences.
*/
static pref_t *
register_preference(module_t *module, const char *name, const char *title,
const char *description)
{
pref_t *preference;
preference = g_malloc(sizeof (pref_t));
preference->name = name;
preference->title = title;
preference->description = description;
preference->ordinal = module->numprefs;
module->prefs = g_list_append(module->prefs, preference);
module->numprefs++;
return preference;
}
/*
* Find a preference in a module's list of preferences, given the module
* and the preference's name.
*/
static gint
preference_match(gconstpointer a, gconstpointer b)
{
const pref_t *pref = a;
const char *name = b;
return strcmp(name, pref->name);
}
static struct preference *
find_preference(module_t *module, char *name)
{
GList *list_entry;
list_entry = g_list_find_custom(module->prefs, name, preference_match);
if (list_entry == NULL)
return NULL; /* no such preference */
return (struct preference *) list_entry->data;
}
/*
* Register a preference with an unsigned integral value.
*/
void
prefs_register_uint_preference(module_t *module, const char *name,
const char *title, const char *description, guint base, guint *var)
{
pref_t *preference;
preference = register_preference(module, name, title, description);
preference->type = PREF_UINT;
preference->varp.uint = var;
preference->info.base = base;
}
/*
* Register a preference with an Boolean value.
*/
void
prefs_register_bool_preference(module_t *module, const char *name,
const char *title, const char *description, gboolean *var)
{
pref_t *preference;
preference = register_preference(module, name, title, description);
preference->type = PREF_BOOL;
preference->varp.bool = var;
}
/*
* Register a preference with an enumerated value.
*/
void
prefs_register_enum_preference(module_t *module, const char *name,
const char *title, const char *description, gint *var,
const enum_val *enumvals, gboolean radio_buttons)
{
pref_t *preference;
preference = register_preference(module, name, title, description);
preference->type = PREF_ENUM;
preference->varp.enump = var;
preference->info.enum_info.enumvals = enumvals;
preference->info.enum_info.radio_buttons = radio_buttons;
}
/*
* Register a preference with a character-string value.
*/
void
prefs_register_string_preference(module_t *module, const char *name,
const char *title, const char *description, char **var)
{
pref_t *preference;
preference = register_preference(module, name, title, description);
preference->type = PREF_STRING;
preference->varp.string = var;
preference->saved_val.string = NULL;
}
typedef struct {
pref_cb callback;
gpointer user_data;
} pref_cb_arg_t;
static void
do_pref_callback(gpointer data, gpointer user_data)
{
pref_t *pref = data;
pref_cb_arg_t *arg = user_data;
(*arg->callback)(pref, arg->user_data);
}
/*
* Call a callback function, with a specified argument, for each preference
* in a given module.
*/
void
prefs_pref_foreach(module_t *module, pref_cb callback, gpointer user_data)
{
pref_cb_arg_t arg;
arg.callback = callback;
arg.user_data = user_data;
g_list_foreach(module->prefs, do_pref_callback, &arg);
}
/*
* Register all non-dissector modules' preferences.
*/
void
prefs_register_modules(void)
{
}
/* 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);
}
}
/*
* Takes a string, a pointer to an array of "enum_val"s, and a default gint
* value.
* The array must be terminated by an entry with a null "name" string.
* If the string matches a "name" strings in an entry, the value from that
* entry is returned. Otherwise, the default value that was passed as the
* third argument is returned.
*/
gint
find_val_for_string(const char *needle, const enum_val *haystack,
gint default_value)
{
int i = 0;
while (haystack[i].name != NULL) {
if (strcasecmp(needle, haystack[i].name) == 0) {
return haystack[i].value;
}
i++;
}
return default_value;
}
/* Takes an string and a pointer to an array of strings, and a default int value.
* The array must be terminated by a NULL string. If the string is found in the array
* of strings, the index of that string in the array is returned. Otherwise, the
* default value that was passed as the third argument is returned.
*/
static int
find_index_from_string_array(char *needle, char **haystack, int default_value)
{
int i = 0;
while (haystack[i] != NULL) {
if (strcmp(needle, haystack[i]) == 0) {
return i;
}
i++;
}
return default_value;
}
/* 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 48
#define MAX_VAL_LEN 1024
#define DEF_NUM_COLS 6
static void read_prefs_file(const char *pf_path, FILE *pf);
e_prefs *
read_prefs(int *gpf_errno_return, char **gpf_path_return,
int *pf_errno_return, char **pf_path_return)
{
int i;
FILE *pf;
fmt_data *cfmt;
gchar *col_fmt[] = {"No.", "%m", "Time", "%t",
"Source", "%s", "Destination", "%d",
"Protocol", "%p", "Info", "%i"};
if (init_prefs) {
/* Initialize preferences to wired-in default values.
They may be overridded by the global preferences file or the
user's preferences file. */
init_prefs = FALSE;
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;
prefs.st_client_fg.pixel = 0;
prefs.st_client_fg.red = 32767;
prefs.st_client_fg.green = 0;
prefs.st_client_fg.blue = 0;
prefs.st_client_bg.pixel = 65535;
prefs.st_client_bg.red = 65535;
prefs.st_client_bg.green = 65535;
prefs.st_client_bg.blue = 65535;
prefs.st_server_fg.pixel = 0;
prefs.st_server_fg.red = 0;
prefs.st_server_fg.green = 0;
prefs.st_server_fg.blue = 32767;
prefs.st_server_bg.pixel = 65535;
prefs.st_server_bg.red = 65535;
prefs.st_server_bg.green = 65535;
prefs.st_server_bg.blue = 65535;
prefs.gui_scrollbar_on_right = TRUE;
prefs.gui_plist_sel_browse = FALSE;
prefs.gui_ptree_sel_browse = FALSE;
prefs.gui_ptree_line_style = 0;
prefs.gui_ptree_expander_style = 1;
}
/* Read the global preferences file, if it exists. */
*gpf_path_return = NULL;
if ((pf = fopen(GPF_PATH, "r")) != NULL) {
/* We succeeded in opening it; read it. */
read_prefs_file(GPF_PATH, pf);
fclose(pf);
} else {
/* We failed to open it. If we failed for some reason other than
"it doesn't exist", return the errno and the pathname, so our
caller can report the error. */
if (errno != ENOENT) {
*gpf_errno_return = errno;
*gpf_path_return = GPF_PATH;
}
}
/* Construct the pathname of the user's preferences file. */
if (! pf_path) {
pf_path = (gchar *) g_malloc(strlen(get_home_dir()) + strlen(PF_DIR) +
strlen(PF_NAME) + 4);
sprintf(pf_path, "%s/%s/%s", get_home_dir(), PF_DIR, PF_NAME);
}
/* Read the user's preferences file, if it exists. */
*pf_path_return = NULL;
if ((pf = fopen(pf_path, "r")) != NULL) {
/* We succeeded in opening it; read it. */
read_prefs_file(pf_path, pf);
fclose(pf);
} else {
/* We failed to open it. If we failed for some reason other than
"it doesn't exist", return the errno and the pathname, so our
caller can report the error. */
if (errno != ENOENT) {
*pf_errno_return = errno;
*pf_path_return = pf_path;
}
}
return &prefs;
}
static void
read_prefs_file(const char *pf_path, FILE *pf)
{
enum { START, IN_VAR, PRE_VAL, IN_VAL, IN_SKIP };
gchar cur_var[MAX_VAR_LEN], cur_val[MAX_VAL_LEN];
int got_c, state = START;
gboolean got_val = FALSE;
gint var_len = 0, val_len = 0, fline = 1, pline = 1;
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';
switch (set_pref(cur_var, cur_val)) {
case PREFS_SET_SYNTAX_ERR:
g_warning ("%s line %d: Syntax error", pf_path, pline);
break;
case PREFS_SET_NO_SUCH_PREF:
g_warning ("%s line %d: No such preference \"%s\"", pf_path,
pline, cur_var);
break;
}
} 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';
switch (set_pref(cur_var, cur_val)) {
case PREFS_SET_SYNTAX_ERR:
g_warning ("%s line %d: Syntax error", pf_path, pline);
break;
case PREFS_SET_NO_SUCH_PREF:
g_warning ("%s line %d: No such preference \"%s\"", pf_path,
pline, cur_var);
break;
}
} else {
g_warning ("%s line %d: Incomplete preference", pf_path, pline);
}
}
}
/*
* Given a string of the form "<pref name>:<pref value>", as might appear
* as an argument to a "-o" option, parse it and set the preference in
* question. Return an indication of whether it succeeded or failed
* in some fashion.
*/
int
prefs_set_pref(char *prefarg)
{
u_char *p, *colonp;
int ret;
colonp = strchr(prefarg, ':');
if (colonp == NULL)
return PREFS_SET_SYNTAX_ERR;
p = colonp;
*p++ = '\0';
/*
* Skip over any white space (there probably won't be any, but
* as we allow it in the preferences file, we might as well
* allow it here).
*/
while (isspace(*p))
p++;
if (*p == '\0') {
/*
* Put the colon back, so if our caller uses, in an
* error message, the string they passed us, the message
* looks correct.
*/
*colonp = ':';
return PREFS_SET_SYNTAX_ERR;
}
ret = set_pref(prefarg, p);
*colonp = ':'; /* put the colon back */
return ret;
}
#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"
#define PRS_STREAM_CL_FG "stream.client.fg"
#define PRS_STREAM_CL_BG "stream.client.bg"
#define PRS_STREAM_SR_FG "stream.server.fg"
#define PRS_STREAM_SR_BG "stream.server.bg"
#define PRS_GUI_SCROLLBAR_ON_RIGHT "gui.scrollbar_on_right"
#define PRS_GUI_PLIST_SEL_BROWSE "gui.packet_list_sel_browse"
#define PRS_GUI_PTREE_SEL_BROWSE "gui.protocol_tree_sel_browse"
#define PRS_GUI_PTREE_LINE_STYLE "gui.protocol_tree_line_style"
#define PRS_GUI_PTREE_EXPANDER_STYLE "gui.protocol_tree_expander_style"
#define RED_COMPONENT(x) ((((x) >> 16) & 0xff) * 65535 / 255)
#define GREEN_COMPONENT(x) ((((x) >> 8) & 0xff) * 65535 / 255)
#define BLUE_COMPONENT(x) (((x) & 0xff) * 65535 / 255)
static gchar *pr_formats[] = { "text", "postscript" };
static gchar *pr_dests[] = { "command", "file" };
static int
set_pref(gchar *pref_name, gchar *value)
{
GList *col_l;
gint llen;
fmt_data *cfmt;
unsigned long int cval;
guint uval;
char *p;
gchar *dotp;
module_t *module;
pref_t *pref;
if (strcmp(pref_name, 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 PREFS_SET_SYNTAX_ERR;
}
} else if (strcmp(pref_name, 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 PREFS_SET_SYNTAX_ERR;
}
} else if (strcmp(pref_name, PRS_PRINT_FILE) == 0) {
if (prefs.pr_file) g_free(prefs.pr_file);
prefs.pr_file = g_strdup(value);
} else if (strcmp(pref_name, PRS_PRINT_CMD) == 0) {
if (prefs.pr_cmd) g_free(prefs.pr_cmd);
prefs.pr_cmd = g_strdup(value);
} else if (strcmp(pref_name, 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 if (strcmp(pref_name, PRS_STREAM_CL_FG) == 0) {
cval = strtoul(value, NULL, 16);
prefs.st_client_fg.pixel = 0;
prefs.st_client_fg.red = RED_COMPONENT(cval);
prefs.st_client_fg.green = GREEN_COMPONENT(cval);
prefs.st_client_fg.blue = BLUE_COMPONENT(cval);
} else if (strcmp(pref_name, PRS_STREAM_CL_BG) == 0) {
cval = strtoul(value, NULL, 16);
prefs.st_client_bg.pixel = 0;
prefs.st_client_bg.red = RED_COMPONENT(cval);
prefs.st_client_bg.green = GREEN_COMPONENT(cval);
prefs.st_client_bg.blue = BLUE_COMPONENT(cval);
} else if (strcmp(pref_name, PRS_STREAM_SR_FG) == 0) {
cval = strtoul(value, NULL, 16);
prefs.st_server_fg.pixel = 0;
prefs.st_server_fg.red = RED_COMPONENT(cval);
prefs.st_server_fg.green = GREEN_COMPONENT(cval);
prefs.st_server_fg.blue = BLUE_COMPONENT(cval);
} else if (strcmp(pref_name, PRS_STREAM_SR_BG) == 0) {
cval = strtoul(value, NULL, 16);
prefs.st_server_bg.pixel = 0;
prefs.st_server_bg.red = RED_COMPONENT(cval);
prefs.st_server_bg.green = GREEN_COMPONENT(cval);
prefs.st_server_bg.blue = BLUE_COMPONENT(cval);
} else if (strcmp(pref_name, PRS_GUI_SCROLLBAR_ON_RIGHT) == 0) {
if (strcmp(value, "TRUE") == 0) {
prefs.gui_scrollbar_on_right = TRUE;
}
else {
prefs.gui_scrollbar_on_right = FALSE;
}
} else if (strcmp(pref_name, PRS_GUI_PLIST_SEL_BROWSE) == 0) {
if (strcmp(value, "TRUE") == 0) {
prefs.gui_plist_sel_browse = TRUE;
}
else {
prefs.gui_plist_sel_browse = FALSE;
}
} else if (strcmp(pref_name, PRS_GUI_PTREE_SEL_BROWSE) == 0) {
if (strcmp(value, "TRUE") == 0) {
prefs.gui_ptree_sel_browse = TRUE;
}
else {
prefs.gui_ptree_sel_browse = FALSE;
}
} else if (strcmp(pref_name, PRS_GUI_PTREE_LINE_STYLE) == 0) {
prefs.gui_ptree_line_style =
find_index_from_string_array(value, gui_ptree_line_style_text, 0);
} else if (strcmp(pref_name, PRS_GUI_PTREE_EXPANDER_STYLE) == 0) {
prefs.gui_ptree_expander_style =
find_index_from_string_array(value, gui_ptree_expander_style_text, 1);
} else {
/* To which module does this preference belong? */
dotp = strchr(pref_name, '.');
if (dotp == NULL)
return PREFS_SET_SYNTAX_ERR; /* no ".", so no module/name separator */
*dotp = '\0'; /* separate module and preference name */
module = find_module(pref_name);
*dotp = '.'; /* put the preference string back */
if (module == NULL)
return PREFS_SET_NO_SUCH_PREF; /* no such module */
dotp++; /* skip past separator to preference name */
pref = find_preference(module, dotp);
if (pref == NULL)
return PREFS_SET_NO_SUCH_PREF; /* no such preference */
switch (pref->type) {
case PREF_UINT:
uval = strtoul(value, &p, pref->info.base);
if (p == value || *p != '\0')
return PREFS_SET_SYNTAX_ERR; /* number was bad */
*pref->varp.uint = uval;
break;
case PREF_BOOL:
/* XXX - give an error if it's neither "true" nor "false"? */
if (strcasecmp(value, "true") == 0)
*pref->varp.bool = TRUE;
else
*pref->varp.bool = FALSE;
break;
case PREF_ENUM:
/* XXX - give an error if it doesn't match? */
*pref->varp.enump = find_val_for_string(value,
pref->info.enum_info.enumvals, 1);
break;
case PREF_STRING:
if (*pref->varp.string != NULL)
g_free(*pref->varp.string);
*pref->varp.string = g_strdup(value);
break;
}
}
return PREFS_SET_OK;
}
typedef struct {
module_t *module;
FILE *pf;
} write_pref_arg_t;
/*
* Write out a single preference.
*/
static void
write_pref(gpointer data, gpointer user_data)
{
pref_t *pref = data;
write_pref_arg_t *arg = user_data;
const enum_val *enum_valp;
const char *val_string;
fprintf(arg->pf, "\n# %s\n", pref->description);
switch (pref->type) {
case PREF_UINT:
switch (pref->info.base) {
case 10:
fprintf(arg->pf, "# A decimal number.\n");
fprintf(arg->pf, "%s.%s: %u\n", arg->module->name,
pref->name, *pref->varp.uint);
break;
case 8:
fprintf(arg->pf, "# An octal number.\n");
fprintf(arg->pf, "%s.%s: %#o\n", arg->module->name,
pref->name, *pref->varp.uint);
break;
case 16:
fprintf(arg->pf, "# A hexadecimal number.\n");
fprintf(arg->pf, "%s.%s: %#x\n", arg->module->name,
pref->name, *pref->varp.uint);
break;
}
break;
case PREF_BOOL:
fprintf(arg->pf, "# TRUE or FALSE (case-insensitive).\n");
fprintf(arg->pf, "%s.%s: %s\n", arg->module->name, pref->name,
*pref->varp.bool ? "TRUE" : "FALSE");
break;
case PREF_ENUM:
fprintf(arg->pf, "# One of: ");
enum_valp = pref->info.enum_info.enumvals;
val_string = NULL;
while (enum_valp->name != NULL) {
if (enum_valp->value == *pref->varp.enump)
val_string = enum_valp->name;
fprintf(arg->pf, "%s", enum_valp->name);
enum_valp++;
if (enum_valp->name == NULL)
fprintf(arg->pf, "\n");
else
fprintf(arg->pf, ", ");
}
fprintf(arg->pf, "# (case-insensitive).\n");
fprintf(arg->pf, "%s.%s: %s\n", arg->module->name, pref->name,
val_string);
break;
case PREF_STRING:
fprintf(arg->pf, "# A string.\n");
fprintf(arg->pf, "%s.%s: %s\n", arg->module->name, pref->name,
*pref->varp.string);
break;
}
}
static void
write_module_prefs(gpointer data, gpointer user_data)
{
write_pref_arg_t arg;
arg.module = data;
arg.pf = user_data;
g_list_foreach(arg.module->prefs, write_pref, &arg);
}
int
write_prefs(char **pf_path_return)
{
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(get_home_dir()) + strlen(PF_DIR) +
strlen(PF_NAME) + 4);
}
sprintf(pf_path, "%s/%s", get_home_dir(), PF_DIR);
if (stat(pf_path, &s_buf) != 0)
#ifdef WIN32
mkdir(pf_path);
#else
mkdir(pf_path, 0755);
#endif
sprintf(pf_path, "%s/%s/%s", get_home_dir(), PF_DIR, PF_NAME);
if ((pf = fopen(pf_path, "w")) == NULL) {
*pf_path_return = pf_path;
return errno;
}
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());
fprintf (pf, "# TCP stream window color preferences. Each value is a six "
"digit hexadecimal value in the form rrggbb.\n");
fprintf (pf, "%s: %02x%02x%02x\n", PRS_STREAM_CL_FG,
(prefs.st_client_fg.red * 255 / 65535),
(prefs.st_client_fg.green * 255 / 65535),
(prefs.st_client_fg.blue * 255 / 65535));
fprintf (pf, "%s: %02x%02x%02x\n", PRS_STREAM_CL_BG,
(prefs.st_client_bg.red * 255 / 65535),
(prefs.st_client_bg.green * 255 / 65535),
(prefs.st_client_bg.blue * 255 / 65535));
fprintf (pf, "%s: %02x%02x%02x\n", PRS_STREAM_SR_FG,
(prefs.st_server_fg.red * 255 / 65535),
(prefs.st_server_fg.green * 255 / 65535),
(prefs.st_server_fg.blue * 255 / 65535));
fprintf (pf, "%s: %02x%02x%02x\n", PRS_STREAM_SR_BG,
(prefs.st_server_bg.red * 255 / 65535),
(prefs.st_server_bg.green * 255 / 65535),
(prefs.st_server_bg.blue * 255 / 65535));
fprintf(pf, "\n# Vertical scrollbars should be on right side? TRUE/FALSE\n");
fprintf(pf, PRS_GUI_SCROLLBAR_ON_RIGHT ": %s\n",
prefs.gui_scrollbar_on_right == TRUE ? "TRUE" : "FALSE");
fprintf(pf, "\n# Packet-list selection bar can be used to browse w/o selecting? TRUE/FALSE\n");
fprintf(pf, PRS_GUI_PLIST_SEL_BROWSE ": %s\n",
prefs.gui_plist_sel_browse == TRUE ? "TRUE" : "FALSE");
fprintf(pf, "\n# Protocol-tree selection bar can be used to browse w/o selecting? TRUE/FALSE\n");
fprintf(pf, PRS_GUI_PTREE_SEL_BROWSE ": %s\n",
prefs.gui_ptree_sel_browse == TRUE ? "TRUE" : "FALSE");
fprintf(pf, "\n# Protocol-tree line style. One of: NONE, SOLID, DOTTED, TABBED\n");
fprintf(pf, PRS_GUI_PTREE_LINE_STYLE ": %s\n",
gui_ptree_line_style_text[prefs.gui_ptree_line_style]);
fprintf(pf, "\n# Protocol-tree expander style. One of: NONE, SQUARE, TRIANGLE, CIRCULAR\n");
fprintf(pf, PRS_GUI_PTREE_EXPANDER_STYLE ": %s\n",
gui_ptree_expander_style_text[prefs.gui_ptree_expander_style]);
g_list_foreach(modules, write_module_prefs, pf);
fclose(pf);
/* XXX - catch I/O errors (e.g. "ran out of disk space") and return
an error indication, or maybe write to a new preferences file and
rename that file on top of the old one only if there are not I/O
errors. */
return 0;
}
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