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/*
* Copyright(c) 2017-2019 by Internet Systems Consortium, Inc.("ISC")
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Internet Systems Consortium, Inc.
* PO Box 360
* Newmarket, NH 03857 USA
* <info@isc.org>
* https://www.isc.org/
*
*/
#include <sys/errno.h>
#include <arpa/inet.h>
#include <assert.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "keama.h"
#define KEAMA_USAGE "Usage: keama [-4|-6] [-D] [-N]" \
" [-r {perform|fatal|pass}\\n" \
" [-l hook-library-path]" \
" [-i input-file] [-o output-file]\n"
static void
usage(const char *sfmt, const char *sarg) {
if (sfmt != NULL) {
fprintf(stderr, sfmt, sarg);
fprintf(stderr, "\n");
}
fputs(KEAMA_USAGE, stderr);
exit(1);
}
enum resolve resolve;
struct parses parses;
int local_family = 0;
char *hook_library_path = NULL;
char *input_file = NULL;
char *output_file = NULL;
FILE *input = NULL;
FILE *output = NULL;
isc_boolean_t use_isc_lifetimes = ISC_FALSE;
isc_boolean_t global_hr = ISC_TRUE;
isc_boolean_t json = ISC_FALSE;
static const char use_noarg[] = "No argument for command: %s";
static const char bad_resolve[] = "Bad -r argument: %s";
int
main(int argc, char **argv) {
int i, fd;
char *inbuf = NULL;
size_t oldsize = 0;
size_t newsize = 0;
ssize_t cc;
struct parse *cfile;
size_t cnt = 0;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-4") == 0)
local_family = AF_INET;
else if (strcmp(argv[i], "-6") == 0)
local_family = AF_INET6;
else if (strcmp(argv[i], "-D") == 0)
use_isc_lifetimes = ISC_TRUE;
else if (strcmp(argv[i], "-N") == 0)
global_hr = ISC_FALSE;
else if (strcmp(argv[i], "-T") == 0)
json = ISC_TRUE;
else if (strcmp(argv[i], "-r") == 0) {
if (++i == argc)
usage(use_noarg, argv[i - 1]);
if (strcmp(argv[i], "perform") == 0)
resolve = perform;
else if (strcmp(argv[i], "fatal") == 0)
resolve = fatal;
else if (strcmp(argv[i], "pass") == 0)
resolve = pass;
else
usage(bad_resolve, argv[i]);
} else if (strcmp(argv[i], "-l") == 0) {
if (++i == argc)
usage(use_noarg, argv[i - 1]);
hook_library_path = argv[i];
} else if (strcmp(argv[i], "-i") == 0) {
if (++i == argc)
usage(use_noarg, argv[i - 1]);
input_file = argv[i];
} else if (strcmp(argv[i], "-o") == 0) {
if (++i == argc)
usage(use_noarg, argv[i - 1]);
output_file = argv[i];
} else
usage("Unknown command: %s", argv[i]);
}
if (!json && (local_family == 0))
usage("address family must be set using %s", "-4 or -6");
if (input_file == NULL) {
input_file = "--stdin--";
fd = fileno(stdin);
for (;;) {
if (newsize == 0)
newsize = 1024;
else {
oldsize = newsize;
newsize *= 4;
}
inbuf = (char *)realloc(inbuf, newsize);
if (inbuf == 0)
usage("out of memory reading standard "
"input: %s", strerror(errno));
cc = read(fd, inbuf + oldsize, newsize - oldsize);
if (cc < 0)
usage("error reading standard input: %s",
strerror(errno));
if (cc + oldsize < newsize) {
newsize = cc + oldsize;
break;
}
}
} else {
fd = open(input_file, O_RDONLY);
if (fd < 0)
usage("Cannot open '%s' for reading", input_file);
}
if (output_file) {
output = fopen(output_file, "w");
if (output == NULL)
usage("Cannot open '%s' for writing", output_file);
} else
output = stdout;
TAILQ_INIT(&parses);
cfile = new_parse(fd, inbuf, newsize, input_file, 0);
assert(cfile != NULL);
if (json) {
struct element *elem;
elem = json_parse(cfile);
if (elem != NULL) {
print(output, elem, 0, 0);
fprintf(output, "\n");
}
} else {
spaces_init();
options_init();
cnt = conf_file_parse(cfile);
if (cfile->stack_top > 0) {
print(output, cfile->stack[0], 0, 0);
fprintf(output, "\n");
}
}
end_parse(cfile);
exit(cnt);
}
void
stackPush(struct parse *pc, struct element *elem)
{
if (pc->stack_top + 2 >= pc->stack_size) {
size_t new_size = pc->stack_size + 10;
size_t amount = new_size * sizeof(struct element *);
pc->stack = (struct element **)realloc(pc->stack, amount);
if (pc->stack == NULL)
parse_error(pc, "can't resize element stack");
pc->stack_size = new_size;
}
pc->stack_top++;
pc->stack[pc->stack_top] = elem;
}
void
parse_error(struct parse *cfile, const char *fmt, ...)
{
va_list list;
char lexbuf[256];
char mbuf[1024];
char fbuf[1024];
unsigned i, lix;
snprintf(fbuf, sizeof(fbuf), "%s line %d: %s",
cfile->tlname, cfile->lexline, fmt);
va_start(list, fmt);
vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
va_end(list);
lix = 0;
for (i = 0;
cfile->token_line[i] && i < (cfile->lexchar - 1); i++) {
if (lix < sizeof(lexbuf) - 1)
lexbuf[lix++] = ' ';
if (cfile->token_line[i] == '\t') {
for (; lix < (sizeof lexbuf) - 1 && (lix & 7); lix++)
lexbuf[lix] = ' ';
}
}
lexbuf[lix] = 0;
fprintf(stderr, "%s\n%s\n", mbuf, cfile->token_line);
if (cfile->lexchar < 81)
fprintf(stderr, "%s^\n", lexbuf);
exit(-1);
}
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