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7e83cf568a
openwrt/scripts/config/confdata.c
John Crispin 1a3c4d1090 add possibility to set default .config values 
SVN-Revision: 9300
2007-10-14 02:15:37 +00:00

540 lines
11 KiB
C
Raw Blame History

/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
* Released under the terms of the GNU GPL v2.0.
*/
#include <sys/stat.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define LKC_DIRECT_LINK
#include "lkc.h"
#define LOCAL_BUILD_SETTINGS "/.openwrt/defconfig"
static void conf_warning(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
static const char *conf_filename;
static int conf_lineno, conf_warnings, conf_unsaved;
const char conf_def_filename[] = ".config";
const char conf_defname[] = "scripts/config/defconfig";
const char *conf_confnames[] = {
".config",
conf_defname,
NULL,
};
static void conf_warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
conf_warnings++;
}
static char *conf_expand_value(const char *in)
{
struct symbol *sym;
const char *src;
static char res_value[SYMBOL_MAXLENGTH];
char *dst, name[SYMBOL_MAXLENGTH];
res_value[0] = 0;
dst = name;
while ((src = strchr(in, '$'))) {
strncat(res_value, in, src - in);
src++;
dst = name;
while (isalnum(*src) || *src == '_')
*dst++ = *src++;
*dst = 0;
sym = sym_lookup(name, 0);
sym_calc_value(sym);
strcat(res_value, sym_get_string_value(sym));
in = src;
}
strcat(res_value, in);
return res_value;
}
char *conf_get_default_confname(void)
{
struct stat buf;
static char fullname[PATH_MAX+1];
char *env, *name;
name = conf_expand_value(conf_defname);
env = getenv(SRCTREE);
if (env) {
sprintf(fullname, "%s/%s", env, name);
if (!stat(fullname, &buf))
return fullname;
}
return name;
}
void conf_reset(void)
{
struct symbol *sym;
int i;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
if (sym_is_choice(sym))
sym->flags &= ~SYMBOL_NEW;
sym->flags &= ~SYMBOL_VALID;
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
if (sym->user.val)
free(sym->user.val);
default:
sym->user.val = NULL;
sym->user.tri = no;
}
}
conf_read_simple(NULL, 0);
}
int conf_read_file(FILE *in, struct symbol *sym){
char line[1024];
char *p, *p2;
while (fgets(line, sizeof(line), in)) {
conf_lineno++;
sym = NULL;
switch (line[0]) {
case '#':
if (memcmp(line + 2, "CONFIG_", 7))
continue;
p = strchr(line + 9, ' ');
if (!p)
continue;
*p++ = 0;
if (strncmp(p, "is not set", 10))
continue;
sym = sym_find(line + 9);
if (!sym) {
//conf_warning("trying to assign nonexistent symbol %s", line + 9);
break;
} /*else if (!(sym->flags & SYMBOL_NEW)) {
//conf_warning("trying to reassign symbol %s", sym->name);
break;
}*/
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
sym->user.tri = no;
sym->flags &= ~SYMBOL_NEW;
break;
default:
;
}
break;
case 'C':
if (memcmp(line, "CONFIG_", 7)) {
conf_warning("unexpected data");
continue;
}
p = strchr(line + 7, '=');
if (!p)
continue;
*p++ = 0;
p2 = strchr(p, '\n');
if (p2)
*p2 = 0;
sym = sym_find(line + 7);
if (!sym) {
//conf_warning("trying to assign nonexistent symbol %s", line + 7);
break;
} /*else if (!(sym->flags & SYMBOL_NEW)) {
conf_warning("trying to reassign symbol %s", sym->name);
break;
}*/
switch (sym->type) {
case S_TRISTATE:
if (p[0] == 'm') {
sym->user.tri = mod;
sym->flags &= ~SYMBOL_NEW;
break;
}
case S_BOOLEAN:
if (p[0] == 'y') {
sym->user.tri = yes;
sym->flags &= ~SYMBOL_NEW;
break;
}
if (p[0] == 'n') {
sym->user.tri = no;
sym->flags &= ~SYMBOL_NEW;
break;
}
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
break;
case S_STRING:
if (*p++ != '"')
break;
for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
if (*p2 == '"') {
*p2 = 0;
break;
}
memmove(p2, p2 + 1, strlen(p2));
}
if (!p2) {
conf_warning("invalid string found");
continue;
}
case S_INT:
case S_HEX:
if (sym_string_valid(sym, p)) {
sym->user.val = strdup(p);
sym->flags &= ~SYMBOL_NEW;
} else {
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
continue;
}
break;
default:
;
}
break;
case '\n':
break;
default:
conf_warning("unexpected data");
continue;
}
if (sym && sym_is_choice_value(sym)) {
struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
switch (sym->user.tri) {
case no:
break;
case mod:
if (cs->user.tri == yes) {
conf_warning("%s creates inconsistent choice state", sym->name);
cs->flags |= SYMBOL_NEW;
}
break;
case yes:
if (cs->user.tri != no) {
conf_warning("%s creates inconsistent choice state", sym->name);
cs->flags |= SYMBOL_NEW;
} else
cs->user.val = sym;
break;
}
cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
}
}
fclose(in);
return 0;
}
int conf_read_simple(const char *name, int load_config)
{
FILE *in = NULL;
FILE *defaults = NULL;
struct symbol *sym;
int i;
char *home_dir = getenv("HOME");
char *default_config_path = NULL;
if(home_dir){
default_config_path = malloc(strlen(home_dir) + sizeof(LOCAL_BUILD_SETTINGS) + 1);
sprintf(default_config_path, "%s%s", home_dir, LOCAL_BUILD_SETTINGS);
defaults = zconf_fopen(default_config_path);
if(defaults)
printf("# using buildsystem predefines from %s\n", default_config_path);
free(default_config_path);
}
if(load_config){
if (name) {
in = zconf_fopen(name);
} else {
const char **names = conf_confnames;
while ((name = *names++)) {
name = conf_expand_value(name);
in = zconf_fopen(name);
if (in) {
printf(_("#\n"
"# using defaults found in %s\n"
"#\n"), name);
break;
}
}
}
}
if (!in && !defaults)
return 1;
conf_filename = name;
conf_lineno = 0;
conf_warnings = 0;
conf_unsaved = 0;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
if (sym_is_choice(sym))
sym->flags &= ~SYMBOL_NEW;
sym->flags &= ~SYMBOL_VALID;
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
if (sym->user.val)
free(sym->user.val);
default:
sym->user.val = NULL;
sym->user.tri = no;
}
}
if(defaults)
conf_read_file(defaults, sym);
if(in)
conf_read_file(in, sym);
if (modules_sym)
sym_calc_value(modules_sym);
return 0;
}
int conf_read(const char *name)
{
struct symbol *sym;
struct property *prop;
struct expr *e;
int i;
if (conf_read_simple(name, 1))
return 1;
for_all_symbols(i, sym) {
sym_calc_value(sym);
if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
goto sym_ok;
if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
/* check that calculated value agrees with saved value */
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (sym->user.tri != sym_get_tristate_value(sym))
break;
if (!sym_is_choice(sym))
goto sym_ok;
default:
if (!strcmp(sym->curr.val, sym->user.val))
goto sym_ok;
break;
}
} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
/* no previous value and not saved */
goto sym_ok;
conf_unsaved++;
/* maybe print value in verbose mode... */
sym_ok:
if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
if (sym->visible == no)
sym->flags |= SYMBOL_NEW;
switch (sym->type) {
case S_STRING:
case S_INT:
case S_HEX:
if (!sym_string_within_range(sym, sym->user.val)) {
sym->flags |= SYMBOL_NEW;
sym->flags &= ~SYMBOL_VALID;
}
default:
break;
}
}
if (!sym_is_choice(sym))
continue;
prop = sym_get_choice_prop(sym);
for (e = prop->expr; e; e = e->left.expr)
if (e->right.sym->visible != no)
sym->flags |= e->right.sym->flags & SYMBOL_NEW;
}
sym_change_count = conf_warnings && conf_unsaved;
return 0;
}
int conf_write(const char *name)
{
FILE *out;
struct symbol *sym;
struct menu *menu;
const char *basename;
char dirname[128], tmpname[128], newname[128];
int type, l;
const char *str;
time_t now;
int use_timestamp = 1;
char *env;
dirname[0] = 0;
if (name && name[0]) {
struct stat st;
char *slash;
if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
strcpy(dirname, name);
strcat(dirname, "/");
basename = conf_def_filename;
} else if ((slash = strrchr(name, '/'))) {
int size = slash - name + 1;
memcpy(dirname, name, size);
dirname[size] = 0;
if (slash[1])
basename = slash + 1;
else
basename = conf_def_filename;
} else
basename = name;
} else
basename = conf_def_filename;
sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
out = fopen(newname, "w");
if (!out)
return 1;
sym = sym_lookup("OPENWRTVERSION", 0);
sym_calc_value(sym);
time(&now);
env = getenv("KCONFIG_NOTIMESTAMP");
if (env && *env)
use_timestamp = 0;
fprintf(out, _("#\n"
"# Automatically generated make config: don't edit\n"
"# OpenWrt version: %s\n"
"%s%s"
"#\n"),
sym_get_string_value(sym),
use_timestamp ? "# " : "",
use_timestamp ? ctime(&now) : "");
if (!sym_change_count)
sym_clear_all_valid();
menu = rootmenu.list;
while (menu) {
sym = menu->sym;
if (!sym) {
if (!menu_is_visible(menu))
goto next;
str = menu_get_prompt(menu);
fprintf(out, "\n"
"#\n"
"# %s\n"
"#\n", str);
} else if (!(sym->flags & SYMBOL_CHOICE)) {
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE))
goto next;
sym->flags &= ~SYMBOL_WRITE;
type = sym->type;
if (type == S_TRISTATE) {
sym_calc_value(modules_sym);
/* tristate always enabled */
#if 0
if (modules_sym->curr.tri == no)
type = S_BOOLEAN;
#endif
}
switch (type) {
case S_BOOLEAN:
case S_TRISTATE:
switch (sym_get_tristate_value(sym)) {
case no:
fprintf(out, "# CONFIG_%s is not set\n", sym->name);
break;
case mod:
fprintf(out, "CONFIG_%s=m\n", sym->name);
break;
case yes:
fprintf(out, "CONFIG_%s=y\n", sym->name);
break;
}
break;
case S_STRING:
// fix me
str = sym_get_string_value(sym);
fprintf(out, "CONFIG_%s=\"", sym->name);
do {
l = strcspn(str, "\"\\");
if (l) {
fwrite(str, l, 1, out);
}
str += l;
while (*str == '\\' || *str == '"') {
fprintf(out, "\\%c", *str);
str++;
}
} while (*str);
fputs("\"\n", out);
break;
case S_HEX:
str = sym_get_string_value(sym);
if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
break;
}
case S_INT:
str = sym_get_string_value(sym);
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
break;
}
}
next:
if (menu->list) {
menu = menu->list;
continue;
}
if (menu->next)
menu = menu->next;
else while ((menu = menu->parent)) {
if (menu->next) {
menu = menu->next;
break;
}
}
}
fclose(out);
if (!name || basename != conf_def_filename) {
if (!name)
name = conf_def_filename;
sprintf(tmpname, "%s.old", name);
rename(name, tmpname);
}
sprintf(tmpname, "%s%s", dirname, basename);
if (rename(newname, tmpname))
return 1;
sym_change_count = 0;
return 0;
}
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