You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#ifdef WIN32
+#include "win32_compat.h"
+#else
+#include <unistd.h>
+#include <poll.h>
+#include <arpa/inet.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#endif/*WIN32*/
#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>
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
-#include <sys/ioctl.h>
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
#include "libnfs.h"
#include "libnfs-raw.h"
#include "libnfs-private.h"
#include "slist.h"
+#ifdef WIN32
+//has to be included after stdlib!!
+#include "win32_errnowrapper.h"
+#endif
+
+
+static int rpc_reconnect_requeue(struct rpc_context *rpc);
+static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s);
+
static void set_nonblocking(int fd)
{
- unsigned v;
+ int v = 0;
+#if defined(WIN32)
+ long nonblocking=1;
+ v = ioctlsocket(fd, FIONBIO,&nonblocking);
+#else
v = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, v | O_NONBLOCK);
+#endif //FIXME
}
int rpc_get_fd(struct rpc_context *rpc)
static int rpc_write_to_socket(struct rpc_context *rpc)
{
- ssize_t count;
+ int64_t count;
if (rpc == NULL) {
return -1;
}
while (rpc->outqueue != NULL) {
- ssize_t total;
+ int64_t total;
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 available;
int size;
int pdu_size;
- ssize_t count;
+ int64_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;
}
+
if (available == 0) {
rpc_set_error(rpc, "Socket has been closed");
return -1;
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;
int rpc_service(struct rpc_context *rpc, int revents)
{
if (revents & POLLERR) {
+#ifdef WIN32
+ char err = 0;
+#else
int err = 0;
+#endif
socklen_t err_size = sizeof(err);
if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR,
- &err, &err_size) != 0 || err != 0) {
+ (char *)&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
rpc_set_error(rpc, "rpc_service: POLLERR, "
"Unknown socket error.");
}
- rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data);
+ if (rpc->connect_cb != NULL) {
+ rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data);
+ }
return -1;
}
if (revents & POLLHUP) {
rpc_set_error(rpc, "Socket failed with POLLHUP");
- rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data);
+ if (rpc->connect_cb != NULL) {
+ rpc->connect_cb(rpc, RPC_STATUS_ERROR, rpc->error_string, rpc->connect_data);
+ }
return -1;
}
socklen_t err_size = sizeof(err);
if (getsockopt(rpc->fd, SOL_SOCKET, SO_ERROR,
- &err, &err_size) != 0 || err != 0) {
+ (char *)&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
rpc_set_error(rpc, "rpc_service: socket error "
"%s(%d) while connecting.",
strerror(err), err);
- rpc->connect_cb(rpc, RPC_STATUS_ERROR,
+ if (rpc->connect_cb != NULL) {
+ rpc->connect_cb(rpc, RPC_STATUS_ERROR,
NULL, rpc->connect_data);
+ }
return -1;
}
rpc->is_connected = 1;
- rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data);
+ if (rpc->connect_cb != NULL) {
+ rpc->connect_cb(rpc, RPC_STATUS_SUCCESS, NULL, rpc->connect_data);
+ }
return 0;
}
+ if (revents & POLLIN) {
+ if (rpc_read_from_socket(rpc) != 0) {
+ rpc_reconnect_requeue(rpc);
+ return 0;
+ }
+ }
+
if (revents & POLLOUT && rpc->outqueue != NULL) {
if (rpc_write_to_socket(rpc) != 0) {
rpc_set_error(rpc, "write to socket failed");
}
}
- if (revents & POLLIN) {
- if (rpc_read_from_socket(rpc) != 0) {
- rpc_disconnect(rpc, rpc_get_error(rpc));
- return -1;
+ return 0;
+}
+
+void rpc_set_autoreconnect(struct rpc_context *rpc)
+{
+ rpc->auto_reconnect = 1;
+}
+
+void rpc_unset_autoreconnect(struct rpc_context *rpc)
+{
+ rpc->auto_reconnect = 0;
+}
+
+static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s)
+{
+ int socksize;
+
+ switch (s->ss_family) {
+ case AF_INET:
+ socksize = sizeof(struct sockaddr_in);
+ rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ break;
+ default:
+ rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family);
+ return -1;
+ }
+
+ if (rpc->fd == -1) {
+ rpc_set_error(rpc, "Failed to open socket");
+ return -1;
+ }
+
+
+#if !defined(WIN32)
+ /* Some systems allow you to set capabilities on an executable
+ * to allow the file to be executed with privilege to bind to
+ * privileged system ports, even if the user is not root.
+ *
+ * Opportunistically try to bind the socket to a low numbered
+ * system port in the hope that the user is either root or the
+ * executable has the CAP_NET_BIND_SERVICE.
+ *
+ * As soon as we fail the bind() with EACCES we know we will never
+ * be able to bind to a system port so we terminate the loop.
+ *
+ * On linux, use
+ * sudo setcap 'cap_net_bind_service=+ep' /path/executable
+ * to make the executable able to bind to a system port.
+ */
+ if (1) {
+ int port;
+ int one = 1;
+
+ setsockopt(rpc->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one));
+
+ for (port = 200; port < 500; port++) {
+ struct sockaddr_in sin;
+
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_port = htons(port);
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = 0;
+
+ if (bind(rpc->fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) != 0 && errno != EACCES) {
+ /* we didnt get EACCES, so try again */
+ continue;
+ }
+ break;
}
}
+#endif
- return 0;
-}
+ set_nonblocking(rpc->fd);
+#if defined(WIN32)
+ if (connect(rpc->fd, (struct sockaddr *)s, socksize) == 0 && errno != EINPROGRESS )
+#else
+ if (connect(rpc->fd, (struct sockaddr *)s, socksize) != 0 && errno != EINPROGRESS)
+#endif
+ {
+ rpc_set_error(rpc, "connect() to server failed");
+ return -1;
+ }
+
+ return 0;
+}
int rpc_connect_async(struct rpc_context *rpc, const char *server, int port, rpc_cb cb, void *private_data)
{
- struct sockaddr_storage s;
- struct sockaddr_in *sin = (struct sockaddr_in *)&s;
- int socksize;
+ struct sockaddr_in *sin = (struct sockaddr_in *)&rpc->s;
if (rpc->fd != -1) {
rpc_set_error(rpc, "Trying to connect while already connected");
return -1;
}
+ rpc->auto_reconnect = 0;
+
sin->sin_family = AF_INET;
sin->sin_port = htons(port);
if (inet_pton(AF_INET, server, &sin->sin_addr) != 1) {
return -1;
}
- switch (s.ss_family) {
+
+ switch (rpc->s.ss_family) {
case AF_INET:
- socksize = sizeof(struct sockaddr_in);
#ifdef HAVE_SOCKADDR_LEN
- sin->sin_len = socksize;
+ sin->sin_len = sizeof(struct sockaddr_in);
#endif
- rpc->fd = socket(AF_INET, SOCK_STREAM, 0);
break;
}
- if (rpc->fd == -1) {
- rpc_set_error(rpc, "Failed to open socket");
- return -1;
- }
-
rpc->connect_cb = cb;
rpc->connect_data = private_data;
- set_nonblocking(rpc->fd);
-
- if (connect(rpc->fd, (struct sockaddr *)&s, socksize) != 0 && errno != EINPROGRESS) {
- rpc_set_error(rpc, "connect() to server failed");
+ if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) {
return -1;
- }
+ }
return 0;
}
int rpc_disconnect(struct rpc_context *rpc, char *error)
{
+ rpc_unset_autoreconnect(rpc);
+
if (rpc->fd != -1) {
+#if defined(WIN32)
+ closesocket(rpc->fd);
+#else
close(rpc->fd);
+#endif
}
rpc->fd = -1;
return 0;
}
+static void reconnect_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data)
+{
+ if (status != RPC_STATUS_SUCCESS) {
+ rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async");
+ return;
+ }
+
+ rpc->is_connected = 1;
+ rpc->connect_cb = NULL;
+}
+
+/* disconnect but do not error all PDUs, just move pdus in-flight back to the outqueue and reconnect */
+static int rpc_reconnect_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);
+ /* we have to re-send the whole pdu again */
+ pdu->written = 0;
+ }
+
+ if (rpc->auto_reconnect != 0) {
+ rpc->connect_cb = reconnect_cb;
+
+ if (rpc_connect_sockaddr_async(rpc, &rpc->s) != 0) {
+ rpc_error_all_pdus(rpc, "RPC ERROR: Failed to reconnect async");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port)
{
return -1;
}
- snprintf(service, 6, "%d", port);
+ 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;
}
- snprintf(service, 6, "%d", port);
+ 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.");
freeaddrinfo(ai);
rpc->is_broadcast = is_broadcast;
- setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, &is_broadcast, sizeof(is_broadcast));
+ setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, sizeof(is_broadcast));
return 0;
}
{
return (struct sockaddr *)&rpc->udp_src;
}
+
+int rpc_queue_length(struct rpc_context *rpc)
+{
+ int i=0;
+ struct rpc_pdu *pdu;
+
+ for(pdu = rpc->outqueue; pdu; pdu = pdu->next) {
+ i++;
+ }
+ for(pdu = rpc->waitpdu; pdu; pdu = pdu->next) {
+ i++;
+ }
+ return i;
+}
repositories / deb_libnfs.git / blobdiff