mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 09:12:39 +00:00
510 lines
10 KiB
C
510 lines
10 KiB
C
/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <sys/stat.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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static void conf_warning(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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static const char *conf_filename;
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static int conf_lineno, conf_warnings, conf_unsaved;
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const char conf_def_filename[] = ".config";
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const char conf_defname[] = "scripts/config/defconfig";
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const char *conf_confnames[] = {
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".config",
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conf_defname,
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NULL,
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};
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static void conf_warning(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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conf_warnings++;
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}
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static char *conf_expand_value(const char *in)
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{
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struct symbol *sym;
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const char *src;
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static char res_value[SYMBOL_MAXLENGTH];
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char *dst, name[SYMBOL_MAXLENGTH];
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res_value[0] = 0;
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dst = name;
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while ((src = strchr(in, '$'))) {
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strncat(res_value, in, src - in);
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src++;
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dst = name;
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while (isalnum(*src) || *src == '_')
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*dst++ = *src++;
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*dst = 0;
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sym = sym_lookup(name, 0);
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sym_calc_value(sym);
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strcat(res_value, sym_get_string_value(sym));
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in = src;
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}
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strcat(res_value, in);
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return res_value;
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}
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char *conf_get_default_confname(void)
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{
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struct stat buf;
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static char fullname[PATH_MAX+1];
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char *env, *name;
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name = conf_expand_value(conf_defname);
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env = getenv(SRCTREE);
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if (env) {
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sprintf(fullname, "%s/%s", env, name);
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if (!stat(fullname, &buf))
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return fullname;
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}
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return name;
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}
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void conf_reset(void)
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{
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struct symbol *sym;
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int i;
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for_all_symbols(i, sym) {
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sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
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if (sym_is_choice(sym))
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sym->flags &= ~SYMBOL_NEW;
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sym->flags &= ~SYMBOL_VALID;
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switch (sym->type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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if (sym->user.val)
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free(sym->user.val);
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default:
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sym->user.val = NULL;
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sym->user.tri = no;
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}
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}
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}
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int conf_read_simple(const char *name)
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{
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FILE *in = NULL;
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char line[1024];
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char *p, *p2;
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struct symbol *sym;
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int i;
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if (name) {
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in = zconf_fopen(name);
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} else {
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const char **names = conf_confnames;
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while ((name = *names++)) {
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name = conf_expand_value(name);
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in = zconf_fopen(name);
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if (in) {
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printf(_("#\n"
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"# using defaults found in %s\n"
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"#\n"), name);
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break;
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}
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}
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}
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if (!in)
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return 1;
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conf_filename = name;
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conf_lineno = 0;
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conf_warnings = 0;
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conf_unsaved = 0;
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for_all_symbols(i, sym) {
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sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
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if (sym_is_choice(sym))
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sym->flags &= ~SYMBOL_NEW;
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sym->flags &= ~SYMBOL_VALID;
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switch (sym->type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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if (sym->user.val)
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free(sym->user.val);
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default:
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sym->user.val = NULL;
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sym->user.tri = no;
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}
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}
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while (fgets(line, sizeof(line), in)) {
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conf_lineno++;
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sym = NULL;
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switch (line[0]) {
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case '#':
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if (memcmp(line + 2, "CONFIG_", 7))
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continue;
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p = strchr(line + 9, ' ');
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if (!p)
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continue;
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*p++ = 0;
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if (strncmp(p, "is not set", 10))
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continue;
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sym = sym_find(line + 9);
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if (!sym) {
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conf_warning("trying to assign nonexistent symbol %s", line + 9);
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break;
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} else if (!(sym->flags & SYMBOL_NEW)) {
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conf_warning("trying to reassign symbol %s", sym->name);
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break;
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}
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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sym->user.tri = no;
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sym->flags &= ~SYMBOL_NEW;
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break;
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default:
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;
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}
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break;
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case 'C':
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if (memcmp(line, "CONFIG_", 7)) {
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conf_warning("unexpected data");
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continue;
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}
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p = strchr(line + 7, '=');
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if (!p)
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continue;
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*p++ = 0;
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p2 = strchr(p, '\n');
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if (p2)
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*p2 = 0;
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sym = sym_find(line + 7);
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if (!sym) {
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conf_warning("trying to assign nonexistent symbol %s", line + 7);
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break;
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} else if (!(sym->flags & SYMBOL_NEW)) {
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conf_warning("trying to reassign symbol %s", sym->name);
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break;
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}
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switch (sym->type) {
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case S_TRISTATE:
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if (p[0] == 'm') {
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sym->user.tri = mod;
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sym->flags &= ~SYMBOL_NEW;
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break;
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}
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case S_BOOLEAN:
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if (p[0] == 'y') {
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sym->user.tri = yes;
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sym->flags &= ~SYMBOL_NEW;
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break;
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}
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if (p[0] == 'n') {
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sym->user.tri = no;
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sym->flags &= ~SYMBOL_NEW;
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break;
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}
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conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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break;
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case S_STRING:
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if (*p++ != '"')
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break;
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for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
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if (*p2 == '"') {
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*p2 = 0;
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break;
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}
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memmove(p2, p2 + 1, strlen(p2));
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}
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if (!p2) {
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conf_warning("invalid string found");
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continue;
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}
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case S_INT:
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case S_HEX:
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if (sym_string_valid(sym, p)) {
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sym->user.val = strdup(p);
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sym->flags &= ~SYMBOL_NEW;
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} else {
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conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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continue;
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}
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break;
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default:
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;
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}
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break;
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case '\n':
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break;
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default:
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conf_warning("unexpected data");
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continue;
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}
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if (sym && sym_is_choice_value(sym)) {
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struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
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switch (sym->user.tri) {
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case no:
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break;
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case mod:
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if (cs->user.tri == yes) {
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conf_warning("%s creates inconsistent choice state", sym->name);
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cs->flags |= SYMBOL_NEW;
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}
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break;
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case yes:
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if (cs->user.tri != no) {
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conf_warning("%s creates inconsistent choice state", sym->name);
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cs->flags |= SYMBOL_NEW;
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} else
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cs->user.val = sym;
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break;
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}
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cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
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}
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}
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fclose(in);
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if (modules_sym)
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sym_calc_value(modules_sym);
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return 0;
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}
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int conf_read(const char *name)
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{
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struct symbol *sym;
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struct property *prop;
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struct expr *e;
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int i;
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if (conf_read_simple(name))
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return 1;
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for_all_symbols(i, sym) {
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sym_calc_value(sym);
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if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
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goto sym_ok;
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if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
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/* check that calculated value agrees with saved value */
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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if (sym->user.tri != sym_get_tristate_value(sym))
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break;
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if (!sym_is_choice(sym))
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goto sym_ok;
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default:
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if (!strcmp(sym->curr.val, sym->user.val))
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goto sym_ok;
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break;
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}
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} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
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/* no previous value and not saved */
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goto sym_ok;
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conf_unsaved++;
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/* maybe print value in verbose mode... */
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sym_ok:
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if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
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if (sym->visible == no)
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sym->flags |= SYMBOL_NEW;
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switch (sym->type) {
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case S_STRING:
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case S_INT:
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case S_HEX:
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if (!sym_string_within_range(sym, sym->user.val)) {
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sym->flags |= SYMBOL_NEW;
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sym->flags &= ~SYMBOL_VALID;
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}
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default:
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break;
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}
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}
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if (!sym_is_choice(sym))
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continue;
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prop = sym_get_choice_prop(sym);
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for (e = prop->expr; e; e = e->left.expr)
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if (e->right.sym->visible != no)
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sym->flags |= e->right.sym->flags & SYMBOL_NEW;
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}
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sym_change_count = conf_warnings && conf_unsaved;
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return 0;
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}
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int conf_write(const char *name)
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{
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FILE *out;
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struct symbol *sym;
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struct menu *menu;
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const char *basename;
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char dirname[128], tmpname[128], newname[128];
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int type, l;
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const char *str;
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time_t now;
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int use_timestamp = 1;
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char *env;
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dirname[0] = 0;
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if (name && name[0]) {
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struct stat st;
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char *slash;
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if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
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strcpy(dirname, name);
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strcat(dirname, "/");
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basename = conf_def_filename;
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} else if ((slash = strrchr(name, '/'))) {
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int size = slash - name + 1;
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memcpy(dirname, name, size);
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dirname[size] = 0;
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if (slash[1])
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basename = slash + 1;
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else
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basename = conf_def_filename;
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} else
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basename = name;
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} else
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basename = conf_def_filename;
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sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
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out = fopen(newname, "w");
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if (!out)
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return 1;
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sym = sym_lookup("OPENWRTVERSION", 0);
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sym_calc_value(sym);
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time(&now);
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env = getenv("KCONFIG_NOTIMESTAMP");
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if (env && *env)
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use_timestamp = 0;
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fprintf(out, _("#\n"
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"# Automatically generated make config: don't edit\n"
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"# OpenWrt version: %s\n"
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"%s%s"
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"#\n"),
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sym_get_string_value(sym),
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use_timestamp ? "# " : "",
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use_timestamp ? ctime(&now) : "");
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if (!sym_change_count)
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sym_clear_all_valid();
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menu = rootmenu.list;
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while (menu) {
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sym = menu->sym;
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if (!sym) {
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if (!menu_is_visible(menu))
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goto next;
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str = menu_get_prompt(menu);
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fprintf(out, "\n"
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"#\n"
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"# %s\n"
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"#\n", str);
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} else if (!(sym->flags & SYMBOL_CHOICE)) {
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sym_calc_value(sym);
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if (!(sym->flags & SYMBOL_WRITE))
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goto next;
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sym->flags &= ~SYMBOL_WRITE;
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type = sym->type;
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if (type == S_TRISTATE) {
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sym_calc_value(modules_sym);
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/* tristate always enabled */
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#if 0
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if (modules_sym->curr.tri == no)
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type = S_BOOLEAN;
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#endif
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}
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switch (type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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switch (sym_get_tristate_value(sym)) {
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case no:
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fprintf(out, "# CONFIG_%s is not set\n", sym->name);
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break;
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case mod:
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fprintf(out, "CONFIG_%s=m\n", sym->name);
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break;
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case yes:
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fprintf(out, "CONFIG_%s=y\n", sym->name);
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break;
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}
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break;
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case S_STRING:
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// fix me
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str = sym_get_string_value(sym);
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fprintf(out, "CONFIG_%s=\"", sym->name);
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do {
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l = strcspn(str, "\"\\");
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if (l) {
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fwrite(str, l, 1, out);
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}
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str += l;
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while (*str == '\\' || *str == '"') {
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fprintf(out, "\\%c", *str);
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str++;
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}
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} while (*str);
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fputs("\"\n", out);
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break;
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case S_HEX:
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str = sym_get_string_value(sym);
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if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
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fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
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break;
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}
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case S_INT:
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str = sym_get_string_value(sym);
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fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
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break;
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}
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}
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next:
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if (menu->list) {
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menu = menu->list;
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continue;
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}
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if (menu->next)
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menu = menu->next;
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else while ((menu = menu->parent)) {
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if (menu->next) {
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menu = menu->next;
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break;
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}
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}
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}
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fclose(out);
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if (!name || basename != conf_def_filename) {
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if (!name)
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name = conf_def_filename;
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sprintf(tmpname, "%s.old", name);
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rename(name, tmpname);
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}
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sprintf(tmpname, "%s%s", dirname, basename);
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if (rename(newname, tmpname))
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return 1;
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sym_change_count = 0;
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return 0;
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}
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