mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
7a43bd07e6
(Busybox should not be system dependent enough to have different default configurations for different platforms. We're not a kernel.)
457 lines
9.4 KiB
C
457 lines
9.4 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 <unistd.h>
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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const char conf_def_filename[] = ".config";
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const char conf_defname[] = "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 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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int conf_read(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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int lineno = 0;
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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 (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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for_all_symbols(i, sym) {
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sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
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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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lineno++;
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sym = NULL;
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switch (line[0]) {
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case '#':
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if (line[1]!=' ')
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continue;
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p = strchr(line + 2, ' ');
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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 + 2);
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if (!sym) {
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fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 2);
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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 'A' ... 'Z':
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p = strchr(line, '=');
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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);
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if (!sym) {
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fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
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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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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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fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
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exit(1);
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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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fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
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exit(1);
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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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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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/* warn? */;
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break;
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case yes:
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if (cs->user.tri != no)
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/* warn? */;
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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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cs->flags &= ~SYMBOL_NEW;
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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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for_all_symbols(i, sym) {
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sym_calc_value(sym);
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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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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 = 1;
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return 0;
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}
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struct menu *next_menu(struct menu *menu)
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{
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if (menu->list) return menu->list;
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do {
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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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} while ((menu = menu->parent));
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return menu;
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}
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#define SYMBOL_FORCEWRITE (1<<31)
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int conf_write(const char *name)
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{
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FILE *out, *out_h;
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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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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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out_h = NULL;
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if (!name) {
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out_h = fopen(".tmpconfig.h", "w");
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if (!out_h)
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return 1;
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}
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fprintf(out, "#\n"
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"# Automatically generated make config: don't edit\n"
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"#\n");
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if (out_h) {
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fprintf(out_h, "/*\n"
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" * Automatically generated header file: don't edit\n"
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" */\n\n"
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"/* Version Number */\n"
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"#define BB_VER \"%s\"\n"
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"#define BB_BT \"%s\"\n",
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getenv("VERSION"),
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getenv("BUILDTIME"));
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if (getenv("EXTRA_VERSION"))
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fprintf(out_h, "#define BB_EXTRA_VERSION \"%s\"\n",
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getenv("EXTRA_VERSION"));
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fprintf(out_h, "\n");
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}
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if (!sym_change_count)
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sym_clear_all_valid();
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/* Force write of all non-duplicate symbols. */
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/* Write out everything by default. */
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for(menu = rootmenu.list; menu; menu = next_menu(menu))
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if (menu->sym) menu->sym->flags |= SYMBOL_FORCEWRITE;
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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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if (out_h)
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fprintf(out_h, "\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_FORCEWRITE))
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goto next;
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sym->flags &= ~SYMBOL_FORCEWRITE;
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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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if (modules_sym->curr.tri == no)
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type = S_BOOLEAN;
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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, "# %s is not set\n", sym->name);
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if (out_h)
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fprintf(out_h, "#undef %s\n", sym->name);
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break;
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case mod:
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#if 0
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fprintf(out, "%s=m\n", sym->name);
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if (out_h)
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fprintf(out_h, "#define %s_MODULE 1\n", sym->name);
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#endif
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break;
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case yes:
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fprintf(out, "%s=y\n", sym->name);
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if (out_h)
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fprintf(out_h, "#define %s 1\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, "%s=\"", sym->name);
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if (out_h)
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fprintf(out_h, "#define %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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if (out_h)
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fwrite(str, l, 1, out_h);
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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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if (out_h)
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fprintf(out_h, "\\%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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if (out_h)
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fputs("\"\n", out_h);
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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, "%s=%s\n", sym->name, *str ? str : "0");
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if (out_h)
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fprintf(out_h, "#define %s 0x%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, "%s=%s\n", sym->name, *str ? str : "0");
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if (out_h)
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fprintf(out_h, "#define %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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menu = next_menu(menu);
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}
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fclose(out);
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if (out_h) {
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fclose(out_h);
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rename(".tmpconfig.h", "include/config.h");
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file_write_dep(NULL);
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}
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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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