static int check_name(const char *full_name, enum rfs_commands cmd_id)
{
char *server = extract_server(full_name);
if (server == NULL)
{
return -EINVAL;
}
int sock = nss_connect(server);
if (sock < 0)
{
free(server);
return sock;
}
free(server);
int saved_errno = 0;
char *name = extract_name(full_name);
size_t overall_size = 0;
struct rfs_command cmd = { 0 };
struct rfs_answer ans = { 0 };
if (name == NULL)
{
saved_errno = -EINVAL;
goto error;
}
overall_size = strlen(name) + 1;
cmd.command = cmd_id;
cmd.data_len = overall_size;
#ifdef RFS_DEBUG
dump_command(&cmd);
#endif
if (send(sock, &cmd, sizeof(cmd), 0) != sizeof(cmd))
{
saved_errno = errno;
free(name);
goto error;
}
DEBUG("sending name: %s\n", name);
if (send(sock, name, overall_size, 0) != overall_size)
{
saved_errno = errno;
free(name);
goto error;
}
free(name);
if (recv(sock, &ans, sizeof(ans), 0) != sizeof(ans))
{
saved_errno = errno;
goto error;
}
#ifdef RFS_DEBUG
dump_answer(&ans);
#endif
if (ans.command != cmd_id)
{
saved_errno = EINVAL;
goto error;
}
saved_errno = ans.ret_errno;
error:
shutdown(sock, SHUT_RDWR);
close(sock);
return -saved_errno;
}
static int get_names(const char *server, struct rfs_list **names, enum rfs_commands cmd_id)
{
if (*names != NULL)
{
destroy_list(names);
}
int sock = nss_connect(server);
if (sock < 0)
{
return sock;
}
int saved_errno = 0;
struct rfs_command cmd = { cmd_id, 0 };
struct rfs_answer ans = { 0 };
#ifdef RFS_DEBUG
dump_command(&cmd);
#endif
if (send(sock, &cmd, sizeof(cmd), 0) != sizeof(cmd))
{
saved_errno = errno;
goto error;
}
do
{
if (recv(sock, &ans, sizeof(ans), 0) != sizeof(ans))
{
saved_errno = errno;
goto error;
}
#ifdef RFS_DEBUG
dump_answer(&ans);
#endif
if (ans.command != cmd_id)
{
saved_errno = EINVAL;
goto error;
}
if (ans.data_len > 0)
{
char *name = malloc(ans.data_len);
if (recv(sock, name, ans.data_len, 0) != ans.data_len)
{
saved_errno = errno;
goto error;
}
if (add_to_list(names, name) == NULL)
{
saved_errno = EIO;
goto error;
}
}
}
while (ans.data_len != 0
&& ans.ret_errno == 0);
goto success;
error:
destroy_list(names);
success:
shutdown(sock, SHUT_RDWR);
close(sock);
return saved_errno;
}
PJ_DEF(void) pj_dns_dump_packet(const pj_dns_parsed_packet *res)
{
unsigned i;
PJ_ASSERT_ON_FAIL(res != NULL, return);
/* Header part */
PJ_LOG(3,(THIS_FILE, "Domain Name System packet (%s):",
(PJ_DNS_GET_QR(res->hdr.flags) ? "response" : "query")));
PJ_LOG(3,(THIS_FILE, " Transaction ID: %d", res->hdr.id));
PJ_LOG(3,(THIS_FILE,
" Flags: opcode=%d, authoritative=%d, truncated=%d, rcode=%d",
PJ_DNS_GET_OPCODE(res->hdr.flags),
PJ_DNS_GET_AA(res->hdr.flags),
PJ_DNS_GET_TC(res->hdr.flags),
PJ_DNS_GET_RCODE(res->hdr.flags)));
PJ_LOG(3,(THIS_FILE, " Nb of queries: %d", res->hdr.qdcount));
PJ_LOG(3,(THIS_FILE, " Nb of answer RR: %d", res->hdr.anscount));
PJ_LOG(3,(THIS_FILE, " Nb of authority RR: %d", res->hdr.nscount));
PJ_LOG(3,(THIS_FILE, " Nb of additional RR: %d", res->hdr.arcount));
PJ_LOG(3,(THIS_FILE, ""));
/* Dump queries */
if (res->hdr.qdcount) {
PJ_LOG(3,(THIS_FILE, " Queries:"));
for (i=0; i<res->hdr.qdcount; ++i) {
dump_query(i, &res->q[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump answers */
if (res->hdr.anscount) {
PJ_LOG(3,(THIS_FILE, " Answers RR:"));
for (i=0; i<res->hdr.anscount; ++i) {
dump_answer(i, &res->ans[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump NS sections */
if (res->hdr.anscount) {
PJ_LOG(3,(THIS_FILE, " NS Authority RR:"));
for (i=0; i<res->hdr.nscount; ++i) {
dump_answer(i, &res->ns[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump Additional info sections */
if (res->hdr.arcount) {
PJ_LOG(3,(THIS_FILE, " Additional Info RR:"));
for (i=0; i<res->hdr.arcount; ++i) {
dump_answer(i, &res->arr[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
}
