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#include <string.h>
#include <errno.h>
#include <getdns/getdns.h>
#include <getdns/getdns_ext_libevent.h>
static int debug = 0;
static getdns_return_t
dump_reply(FILE *fp, getdns_dict *reply, const char *section_name)
{
getdns_list *section = NULL;
size_t section_len = -1;
getdns_return_t r;
uint8_t *res = NULL;
size_t res_len;
r = getdns_dict_get_list(reply, section_name, §ion);
if (r) {
fprintf(stderr,
"unable to get section \"%s\" from reply\n",
section_name);
return r;
}
r = getdns_list_get_length(section, §ion_len);
if (r) {
fprintf(stderr, "unable to get length of section\n");
return r;
}
for (size_t j = 0; j < section_len; j++) {
getdns_dict *rr = NULL;
r = getdns_list_get_dict(section, j , &rr);
if (r) {
fprintf(stderr, "unable to get rr from entry "
"%d: %d\n", j, r);
return r;
}
r = getdns_rr_dict2wire(rr, &res, &res_len);
if (r) {
fprintf(stderr,
"unable to convert entry %d "
"to wire format: %d\n", j, r);
return r;
}
if (0 && debug) {
char *s = getdns_pretty_print_dict(rr);
puts(s);
free(s);
}
if (fwrite(res, 1, res_len, fp) != res_len) {
fprintf(stderr,
"unable to write buffer to file: %s\n",
strerror(errno));
return -errno;
}
free(res);
}
return 0;
}
int
dump_tree(FILE *fp, const getdns_dict *response, const char *tree_name, const char *section_name)
{
getdns_return_t r;
getdns_list *tree = NULL;
size_t n_replies = -1;
r = getdns_dict_get_list(response, tree_name, &tree);
if (r) {
fprintf(stderr, "unable to get tree %s\n", tree_name);
return r;
}
if (section_name == NULL) {
size_t tree_len = 0;
r = getdns_list_get_length(tree, &tree_len);
if (r) {
fprintf(stderr, "unable to get tree length\n");
return r;
}
for (size_t i = 0; i < tree_len; i++) {
getdns_dict *rr = NULL;
r = getdns_list_get_dict(tree, i , &rr);
if (r) {
fprintf(stderr, "unable to get rr from entry %d: %d\n", i, r);
return r;
}
uint8_t *res = NULL;
size_t res_len = 0;
r = getdns_rr_dict2wire(rr, &res, &res_len);
if (r) {
fprintf(stderr,
"unable to convert entry %d "
"to wire format: %d\n", i, r);
return r;
}
if (fwrite(res, 1, res_len, fp) != res_len) {
fprintf(stderr,
"unable to write buffer to file: %s\n",
strerror(errno));
return errno;
}
free(res);
}
} else {
r = getdns_list_get_length(tree, &n_replies);
if (r) {
fprintf(stderr, "unable to get number of replies\n");
return r;
}
for (size_t i = 0; i < n_replies; i++) {
getdns_dict *reply = NULL;
r = getdns_list_get_dict(tree, i, &reply);
if (r) {
fprintf(stderr, "unable to get reply %d from tree\n", i);
return r;
}
if (debug) {
char *s = getdns_pretty_print_dict(reply);
printf("Pretty-printing reply #%d:%s\n", i, s);
free(s);
}
dump_reply(fp, reply, section_name);
}
}
return 0;
}
#define CHUNKSIZE 4096
size_t
read_buffer(FILE *infp, uint8_t **bufp_out, size_t size_hint)
{
size_t nread = 0;
uint8_t *wirebuf = NULL;
size_t chunksize = CHUNKSIZE;
int chunks = 1;
if (size_hint > 0)
chunksize = size_hint;
wirebuf = malloc(chunksize);
if (wirebuf == NULL)
goto out;
while (1)
{
size_t n = fread(wirebuf + nread, 1, chunksize, infp);
nread += n;
if (n < chunksize)
break; /* Done. */
wirebuf = realloc(wirebuf, ++chunks * chunksize);
if (wirebuf == NULL)
break;
}
out:
if (bufp_out != NULL)
*bufp_out = wirebuf;
return nread;
}
getdns_return_t
wire_rrs2list(const uint8_t *buf, size_t buf_len, getdns_list **list_out)
{
getdns_return_t r = GETDNS_RETURN_GOOD;
getdns_list *list = getdns_list_create();
getdns_dict *dict = NULL;
size_t rr_count = 0;
if (list == NULL)
return GETDNS_RETURN_MEMORY_ERROR;
while (buf_len > 0)
{
r = getdns_wire2rr_dict_scan(&buf, &buf_len, &dict);
if (r)
break;
r = getdns_list_set_dict(list, rr_count, dict);
getdns_dict_destroy(dict); /* The list has a copy. */
if (r)
break;
rr_count++;
}
if (list_out)
*list_out = list;
return r;
}
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