along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#if defined(WIN32)
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <basetsd.h>
+#define ssize_t SSIZE_T
+#define MSG_DONTWAIT 0
+#else
+#include <unistd.h>
+#include <poll.h>
+#include <arpa/inet.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include <stdio.h>
#include <stdlib.h>
-#include <unistd.h>
#include <fcntl.h>
-#include <poll.h>
#include <string.h>
#include <errno.h>
#include <rpc/rpc.h>
#include <rpc/xdr.h>
-#include <arpa/inet.h>
-#include <sys/ioctl.h>
+#ifdef HAVE_SYS_FILIO_H
+#include <sys/filio.h>
+#endif
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+#include <sys/types.h>
#include "libnfs.h"
#include "libnfs-raw.h"
#include "libnfs-private.h"
#include "slist.h"
+static int rpc_disconnect_requeue(struct rpc_context *rpc);
+
static void set_nonblocking(int fd)
{
+#if defined(WIN32)
+#else
unsigned v;
v = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, v | O_NONBLOCK);
+#endif
}
int rpc_get_fd(struct rpc_context *rpc)
{
int events = rpc->is_connected ? POLLIN : POLLOUT;
+ if (rpc->is_udp != 0) {
+ /* for udp sockets we only wait for pollin */
+ return POLLIN;
+ }
+
if (rpc->outqueue) {
events |= POLLOUT;
}
total = rpc->outqueue->outdata.size;
+#if defined(WIN32)
+ count = send(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written, 0);
+#else
count = write(rpc->fd, rpc->outqueue->outdata.data + rpc->outqueue->written, total - rpc->outqueue->written);
+#endif
if (count == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
return 0;
int pdu_size;
ssize_t count;
+#if defined(WIN32)
+ if (ioctlsocket(rpc->fd, FIONREAD, &available) != 0) {
+#else
if (ioctl(rpc->fd, FIONREAD, &available) != 0) {
+#endif
rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno);
return -1;
}
return -1;
}
+ if (rpc->is_udp) {
+ char *buf;
+ socklen_t socklen = sizeof(rpc->udp_src);
+
+ buf = malloc(available);
+ if (buf == NULL) {
+ rpc_set_error(rpc, "Failed to malloc buffer for recvfrom");
+ return -1;
+ }
+ count = recvfrom(rpc->fd, buf, available, MSG_DONTWAIT, (struct sockaddr *)&rpc->udp_src, &socklen);
+ if (count < 0) {
+ rpc_set_error(rpc, "Failed recvfrom: %s", strerror(errno));
+ free(buf);
+ }
+ if (rpc_process_pdu(rpc, buf, count) != 0) {
+ rpc_set_error(rpc, "Invalid/garbage pdu received from server. Ignoring PDU");
+ free(buf);
+ return -1;
+ }
+ free(buf);
+ return 0;
+ }
+
/* read record marker, 4 bytes at the beginning of every pdu */
if (rpc->inbuf == NULL) {
rpc->insize = 4;
if (rpc->inpos < 4) {
size = 4 - rpc->inpos;
+#if defined(WIN32)
+ count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0);
+#else
count = read(rpc->fd, rpc->inbuf + rpc->inpos, size);
+#endif
if (count == -1) {
if (errno == EINTR) {
return 0;
size = rpc->insize - rpc->inpos;
}
+#if defined(WIN32)
+ count = recv(rpc->fd, rpc->inbuf + rpc->inpos, size, 0);
+#else
count = read(rpc->fd, rpc->inbuf + rpc->inpos, size);
+#endif
if (count == -1) {
if (errno == EINTR) {
return 0;
return 0;
}
- if (revents & POLLOUT && rpc->outqueue != NULL) {
- if (rpc_write_to_socket(rpc) != 0) {
- rpc_set_error(rpc, "write to socket failed");
- return -1;
+ if (revents & POLLIN) {
+ if (rpc_read_from_socket(rpc) != 0) {
+ rpc_disconnect_requeue(rpc);
+ return 0;
}
}
- if (revents & POLLIN) {
- if (rpc_read_from_socket(rpc) != 0) {
- rpc_disconnect(rpc, rpc_get_error(rpc));
+ if (revents & POLLOUT && rpc->outqueue != NULL) {
+ if (rpc_write_to_socket(rpc) != 0) {
+ rpc_set_error(rpc, "write to socket failed");
return -1;
}
}
return -1;
}
+ if (rpc->is_udp != 0) {
+ rpc_set_error(rpc, "Trying to connect on UDP socket");
+ return -1;
+ }
+
sin->sin_family = AF_INET;
sin->sin_port = htons(port);
if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) {
switch (s.ss_family) {
case AF_INET:
socksize = sizeof(struct sockaddr_in);
-#ifdef HAVE_SOCK_SIN_LEN
+#ifdef HAVE_SOCKADDR_LEN
sin->sin_len = socksize;
#endif
- rpc->fd = socket(AF_INET, SOCK_STREAM, 0);
+ rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
break;
}
int rpc_disconnect(struct rpc_context *rpc, char *error)
{
if (rpc->fd != -1) {
+#if defined(WIN32)
+ closesocket(rpc->fd);
+#else
close(rpc->fd);
+#endif
}
rpc->fd = -1;
return 0;
}
+
+/* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue */
+static int rpc_disconnect_requeue(struct rpc_context *rpc)
+{
+ struct rpc_pdu *pdu;
+
+ if (rpc->fd != -1) {
+#if defined(WIN32)
+ closesocket(rpc->fd);
+#else
+ close(rpc->fd);
+#endif
+ }
+ rpc->fd = -1;
+
+ rpc->is_connected = 0;
+
+ /* socket is closed so we will not get any replies to any commands
+ * in flight. Move them all over from the waitpdu queue back to the out queue
+ */
+ for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
+ SLIST_REMOVE(&rpc->waitpdu, pdu);
+ SLIST_ADD(&rpc->outqueue, pdu);
+ }
+
+ return 0;
+}
+
+
+int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port)
+{
+ struct addrinfo *ai = NULL;
+ char service[6];
+
+ if (rpc->is_udp == 0) {
+ rpc_set_error(rpc, "Cant not bind UDP. Not UDP context");
+ return -1;
+ }
+
+ sprintf(service, "%d", port);
+ if (getaddrinfo(addr, service, NULL, &ai) != 0) {
+ rpc_set_error(rpc, "Invalid address:%s. "
+ "Can not resolv into IPv4/v6 structure.");
+ return -1;
+ }
+
+ switch(ai->ai_family) {
+ case AF_INET:
+ rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0);
+ if (rpc->fd == -1) {
+ rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno));
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) {
+ rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno));
+ freeaddrinfo(ai);
+ return -1;
+ }
+ break;
+ default:
+ rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family);
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ freeaddrinfo(ai);
+
+ return 0;
+}
+
+int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast)
+{
+ struct addrinfo *ai = NULL;
+ char service[6];
+
+ if (rpc->is_udp == 0) {
+ rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context");
+ return -1;
+ }
+
+ sprintf(service, "%d", port);
+ if (getaddrinfo(addr, service, NULL, &ai) != 0) {
+ rpc_set_error(rpc, "Invalid address:%s. "
+ "Can not resolv into IPv4/v6 structure.");
+ return -1;
+ }
+
+ if (rpc->udp_dest) {
+ free(rpc->udp_dest);
+ rpc->udp_dest = NULL;
+ }
+ rpc->udp_dest = malloc(ai->ai_addrlen);
+ if (rpc->udp_dest == NULL) {
+ rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure");
+ return -1;
+ }
+ memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen);
+ freeaddrinfo(ai);
+
+ rpc->is_broadcast = is_broadcast;
+ setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, &is_broadcast, sizeof(is_broadcast));
+
+ return 0;
+}
+
+struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc)
+{
+ return (struct sockaddr *)&rpc->udp_src;
+}
repositories / deb_libnfs.git / blobdiff