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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <stdbool.h>
#include <string.h>
#include <isc/commandline.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/symtab.h>
#include <isc/util.h>
isc_mem_t *mctx;
isc_symtab_t *st;
static void
undefine_action(char *key, unsigned int type, isc_symvalue_t value, void *arg) {
UNUSED(arg);
INSIST(type == 1);
isc_mem_free(mctx, key);
isc_mem_free(mctx, value.as_pointer);
}
int
main(int argc, char *argv[]) {
char s[1000], *cp, *key;
size_t len;
isc_result_t result;
isc_symvalue_t value;
int trace = 0;
int c;
isc_symexists_t exists_policy = isc_symexists_reject;
bool case_sensitive = false;
while ((c = isc_commandline_parse(argc, argv, "tarc")) != -1) {
switch (c) {
case 't':
trace = 1;
break;
case 'a':
exists_policy = isc_symexists_add;
break;
case 'r':
exists_policy = isc_symexists_replace;
break;
case 'c':
case_sensitive = true;
break;
}
}
isc_mem_create(&mctx);
RUNTIME_CHECK(isc_symtab_create(mctx, 691, undefine_action, NULL,
case_sensitive, &st) == ISC_R_SUCCESS);
while (fgets(s, sizeof(s), stdin) != NULL) {
len = strlen(s);
if (len > 0U && s[len - 1] == '\n') {
s[len - 1] = '\0';
len--;
}
cp = s;
if (cp[0] == '!') {
cp++;
result = isc_symtab_undefine(st, cp, 1);
if (trace || result != ISC_R_SUCCESS) {
printf("undefine('%s'): %s\n", cp,
isc_result_totext(result));
}
} else {
key = cp;
while (*cp != '\0' && *cp != ' ' && *cp != '\t') {
cp++;
}
if (*cp == '\0') {
result = isc_symtab_lookup(st, key, 0, &value);
if (trace || result != ISC_R_SUCCESS) {
printf("lookup('%s'): %s", key,
isc_result_totext(result));
if (result == ISC_R_SUCCESS) {
cp = value.as_pointer;
printf(", value == '%s'", cp);
}
printf("\n");
}
} else {
*cp++ = '\0';
key = isc_mem_strdup(mctx, key);
value.as_pointer = isc_mem_strdup(mctx, cp);
result = isc_symtab_define(st, key, 1, value,
exists_policy);
if (trace || result != ISC_R_SUCCESS) {
printf("define('%s', '%s'): %s\n", key,
cp, isc_result_totext(result));
if (result != ISC_R_SUCCESS) {
undefine_action(key, 1, value,
NULL);
}
}
}
}
}
isc_symtab_destroy(&st);
isc_mem_stats(mctx, stdout);
isc_mem_destroy(&mctx);
return (0);
}
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