diff options
Diffstat (limited to 'REORG.TODO/sunrpc/rtime.c')
| -rw-r--r-- | REORG.TODO/sunrpc/rtime.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/REORG.TODO/sunrpc/rtime.c b/REORG.TODO/sunrpc/rtime.c new file mode 100644 index 0000000000..e3cffe26d4 --- /dev/null +++ b/REORG.TODO/sunrpc/rtime.c @@ -0,0 +1,145 @@ +/* + * Copyright (c) 2010, Oracle America, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * * Neither the name of the "Oracle America, Inc." nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* + * rtime - get time from remote machine + * + * gets time, obtaining value from host + * on the udp/time socket. Since timeserver returns + * with time of day in seconds since Jan 1, 1900, must + * subtract seconds before Jan 1, 1970 to get + * what unix uses. + */ +#include <stdio.h> +#include <unistd.h> +#include <stdint.h> +#include <rpc/rpc.h> +#include <rpc/clnt.h> +#include <sys/types.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <rpc/auth_des.h> +#include <errno.h> +#include <netinet/in.h> +#include <shlib-compat.h> + +#define NYEARS (u_long)(1970 - 1900) +#define TOFFSET (u_long)(60*60*24*(365*NYEARS + (NYEARS/4))) + +static void do_close (int); + +static void +do_close (int s) +{ + int save; + + save = errno; + __close (s); + __set_errno (save); +} + +int +rtime (struct sockaddr_in *addrp, struct rpc_timeval *timep, + struct rpc_timeval *timeout) +{ + int s; + struct pollfd fd; + int milliseconds; + int res; + /* RFC 868 says the time is transmitted as a 32-bit value. */ + uint32_t thetime; + struct sockaddr_in from; + socklen_t fromlen; + int type; + + if (timeout == NULL) + type = SOCK_STREAM; + else + type = SOCK_DGRAM; + + s = __socket (AF_INET, type, 0); + if (s < 0) + return (-1); + + addrp->sin_family = AF_INET; + addrp->sin_port = htons (IPPORT_TIMESERVER); + if (type == SOCK_DGRAM) + { + res = __sendto (s, (char *) &thetime, sizeof (thetime), 0, + (struct sockaddr *) addrp, sizeof (*addrp)); + if (res < 0) + { + do_close (s); + return -1; + } + milliseconds = (timeout->tv_sec * 1000) + (timeout->tv_usec / 1000); + fd.fd = s; + fd.events = POLLIN; + do + res = __poll (&fd, 1, milliseconds); + while (res < 0 && errno == EINTR); + if (res <= 0) + { + if (res == 0) + __set_errno (ETIMEDOUT); + do_close (s); + return (-1); + } + fromlen = sizeof (from); + res = __recvfrom (s, (char *) &thetime, sizeof (thetime), 0, + (struct sockaddr *) &from, &fromlen); + do_close (s); + if (res < 0) + return -1; + } + else + { + if (__connect (s, (struct sockaddr *) addrp, sizeof (*addrp)) < 0) + { + do_close (s); + return -1; + } + res = __read (s, (char *) &thetime, sizeof (thetime)); + do_close (s); + if (res < 0) + return (-1); + } + if (res != sizeof (thetime)) + { + __set_errno (EIO); + return -1; + } + thetime = ntohl (thetime); + timep->tv_sec = thetime - TOFFSET; + timep->tv_usec = 0; + return 0; +} +libc_hidden_nolink_sunrpc (rtime, GLIBC_2_1) |