void rpc_destroy_context(struct rpc_context *rpc)
{
struct rpc_pdu *pdu;
unsigned int i;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
/* If we are a server context, free all registered endpoints. */
while (rpc->endpoints != NULL) {
struct rpc_endpoint *next = rpc->endpoints->next;
free(rpc->endpoints);
rpc->endpoints = next;
}
while((pdu = rpc->outqueue.head) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
LIBNFS_LIST_REMOVE(&rpc->outqueue.head, pdu);
rpc_free_pdu(rpc, pdu);
}
for (i = 0; i < HASHES; i++) {
struct rpc_queue *q = &rpc->waitpdu[i];
while((pdu = q->head) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
LIBNFS_LIST_REMOVE(&q->head, pdu);
rpc_free_pdu(rpc, pdu);
}
}
rpc_free_all_fragments(rpc);
if (rpc->auth) {
auth_destroy(rpc->auth);
rpc->auth =NULL;
}
if (rpc->fd != -1) {
close(rpc->fd);
}
if (rpc->error_string != NULL) {
free(rpc->error_string);
rpc->error_string = NULL;
}
rpc->magic = 0;
free(rpc);
}
void rpc_destroy_context(struct rpc_context *rpc)
{
struct rpc_pdu *pdu;
unsigned int i;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
while((pdu = rpc->outqueue.head) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
LIBNFS_LIST_REMOVE(&rpc->outqueue.head, pdu);
rpc_free_pdu(rpc, pdu);
}
for (i = 0; i < HASHES; i++) {
struct rpc_queue *q = &rpc->waitpdu[i];
while((pdu = q->head) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
LIBNFS_LIST_REMOVE(&q->head, pdu);
rpc_free_pdu(rpc, pdu);
}
}
rpc_free_all_fragments(rpc);
auth_destroy(rpc->auth);
rpc->auth =NULL;
if (rpc->fd != -1) {
close(rpc->fd);
}
if (rpc->encodebuf != NULL) {
free(rpc->encodebuf);
rpc->encodebuf = NULL;
}
if (rpc->error_string != NULL) {
free(rpc->error_string);
rpc->error_string = NULL;
}
if (rpc->udp_dest != NULL) {
free(rpc->udp_dest);
rpc->udp_dest = NULL;
}
rpc->magic = 0;
free(rpc);
}
void rpc_destroy_context(struct rpc_context *rpc)
{
struct rpc_pdu *pdu;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
while((pdu = rpc->outqueue) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
SLIST_REMOVE(&rpc->outqueue, pdu);
rpc_free_pdu(rpc, pdu);
}
while((pdu = rpc->waitpdu) != NULL) {
pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
SLIST_REMOVE(&rpc->waitpdu, pdu);
rpc_free_pdu(rpc, pdu);
}
rpc_free_all_fragments(rpc);
auth_destroy(rpc->auth);
rpc->auth =NULL;
if (rpc->fd != -1) {
#if defined(WIN32)
closesocket(rpc->fd);
#else
close(rpc->fd);
#endif
}
if (rpc->encodebuf != NULL) {
free(rpc->encodebuf);
rpc->encodebuf = NULL;
}
if (rpc->error_string != NULL) {
free(rpc->error_string);
rpc->error_string = NULL;
}
if (rpc->udp_dest != NULL) {
free(rpc->udp_dest);
rpc->udp_dest = NULL;
}
rpc->magic = 0;
free(rpc);
}
int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size)
{
struct rpc_pdu *pdu, *prev_pdu;
struct rpc_queue *q;
ZDR zdr;
int pos, recordmarker = 0;
unsigned int hash;
uint32_t xid;
char *reasbuf = NULL;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
memset(&zdr, 0, sizeof(ZDR));
zdrmem_create(&zdr, buf, size, ZDR_DECODE);
if (rpc->is_udp == 0) {
if (zdr_int(&zdr, &recordmarker) == 0) {
rpc_set_error(rpc, "zdr_int reading recordmarker failed");
zdr_destroy(&zdr);
return -1;
}
if (!(recordmarker&0x80000000)) {
zdr_destroy(&zdr);
if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
return -1;
}
return 0;
}
}
/* reassembly */
if (recordmarker != 0 && rpc->fragments != NULL) {
struct rpc_fragment *fragment;
uint32_t total = size - 4;
char *ptr;
zdr_destroy(&zdr);
for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
total += fragment->size;
if (total < fragment->size) {
rpc_set_error(rpc, "Fragments too large");
rpc_free_all_fragments(rpc);
return -1;
}
}
reasbuf = malloc(total);
if (reasbuf == NULL) {
rpc_set_error(rpc, "Failed to reassemble PDU");
rpc_free_all_fragments(rpc);
return -1;
}
ptr = reasbuf;
for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
memcpy(ptr, fragment->data, fragment->size);
ptr += fragment->size;
}
memcpy(ptr, buf + 4, size - 4);
zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
rpc_free_all_fragments(rpc);
}
if (rpc->is_server_context) {
int ret;
ret = rpc_process_call(rpc, &zdr);
zdr_destroy(&zdr);
if (reasbuf != NULL) {
free(reasbuf);
}
return ret;
}
pos = zdr_getpos(&zdr);
if (zdr_int(&zdr, (int *)&xid) == 0) {
rpc_set_error(rpc, "zdr_int reading xid failed");
zdr_destroy(&zdr);
if (reasbuf != NULL) {
free(reasbuf);
}
return -1;
}
zdr_setpos(&zdr, pos);
/* Look up the transaction in a hash table of our requests */
hash = rpc_hash_xid(xid);
q = &rpc->waitpdu[hash];
/* Follow the hash chain. Linear traverse singly-linked list,
* but track previous entry for optimised removal */
prev_pdu = NULL;
for (pdu=q->head; pdu; pdu=pdu->next) {
if (pdu->xid != xid) {
prev_pdu = pdu;
continue;
}
if (rpc->is_udp == 0 || rpc->is_broadcast == 0) {
/* Singly-linked but we track head and tail */
if (pdu == q->head)
q->head = pdu->next;
if (pdu == q->tail)
q->tail = prev_pdu;
if (prev_pdu != NULL)
prev_pdu->next = pdu->next;
rpc->waitpdu_len--;
}
if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
rpc_set_error(rpc, "rpc_procdess_reply failed");
}
zdr_destroy(&zdr);
if (rpc->is_udp == 0 || rpc->is_broadcast == 0) {
rpc_free_pdu(rpc, pdu);
}
if (reasbuf != NULL) {
free(reasbuf);
}
return 0;
}
zdr_destroy(&zdr);
if (reasbuf != NULL) {
free(reasbuf);
}
return 0;
}
