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netserver.c
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netserver.c
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/*
Copyright (C) 1993-2012 Hewlett-Packard Company
ALL RIGHTS RESERVED.
The enclosed software and documentation includes copyrighted works
of Hewlett-Packard Co. For as long as you comply with the following
limitations, you are hereby authorized to (i) use, reproduce, and
modify the software and documentation, and to (ii) distribute the
software and documentation, including modifications, for
non-commercial purposes only.
1. The enclosed software and documentation is made available at no
charge in order to advance the general development of
high-performance networking products.
2. You may not delete any copyright notices contained in the
software or documentation. All hard copies, and copies in
source code or object code form, of the software or
documentation (including modifications) must contain at least
one of the copyright notices.
3. The enclosed software and documentation has not been subjected
to testing and quality control and is not a Hewlett-Packard Co.
product. At a future time, Hewlett-Packard Co. may or may not
offer a version of the software and documentation as a product.
4. THE SOFTWARE AND DOCUMENTATION IS PROVIDED "AS IS".
HEWLETT-PACKARD COMPANY DOES NOT WARRANT THAT THE USE,
REPRODUCTION, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR
DOCUMENTATION WILL NOT INFRINGE A THIRD PARTY'S INTELLECTUAL
PROPERTY RIGHTS. HP DOES NOT WARRANT THAT THE SOFTWARE OR
DOCUMENTATION IS ERROR FREE. HP DISCLAIMS ALL WARRANTIES,
EXPRESS AND IMPLIED, WITH REGARD TO THE SOFTWARE AND THE
DOCUMENTATION. HP SPECIFICALLY DISCLAIMS ALL WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
5. HEWLETT-PACKARD COMPANY WILL NOT IN ANY EVENT BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
(INCLUDING LOST PROFITS) RELATED TO ANY USE, REPRODUCTION,
MODIFICATION, OR DISTRIBUTION OF THE SOFTWARE OR DOCUMENTATION.
*/
#include "netperf_version.h"
char netserver_id[]="\
@(#)netserver.c (c) Copyright 1993-2012 Hewlett-Packard Co. Version 2.6.0";
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if HAVE_STRING_H
# if !STDC_HEADERS && HAVE_MEMORY_H
# include <memory.h>
# endif
# include <string.h>
#endif
#if HAVE_STRINGS_H
# include <strings.h>
#endif
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#if HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif
#if HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#if HAVE_NETDB_H
#include <netdb.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if HAVE_ERRNO_H
#include <errno.h>
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
/* some OS's have SIGCLD defined as SIGCHLD */
#ifndef SIGCLD
#define SIGCLD SIGCHLD
#endif /* SIGCLD */
#endif
#if !defined(HAVE_SETSID)
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#endif
#ifdef WIN32
#include <time.h>
#include <winsock2.h>
#if HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#include "missing\stdint.h"
#define strdup _strdup
#define sleep(x) Sleep((x)*1000)
#define netperf_socklen_t socklen_t
#endif /* WIN32 */
/* unconditional system includes */
#include <sys/types.h>
#include <stdio.h>
#include <fcntl.h>
/* netperf includes */
#include "netlib.h"
#include "nettest_bsd.h"
#ifdef WANT_UNIX
#include "nettest_unix.h"
#endif /* WANT_UNIX */
#ifdef WANT_DLPI
#include "nettest_dlpi.h"
#endif /* WANT_DLPI */
#ifdef WANT_SCTP
#include "nettest_sctp.h"
#endif
#include "netsh.h"
#ifndef DEBUG_LOG_FILE_DIR
#if defined(WIN32)
#define DEBUG_LOG_FILE_DIR getenv("TEMP")
#define NETPERF_NULL "nul"
#define FILE_SEP "\\"
#elif defined(ANDROID)
#define DEBUG_LOG_FILE_DIR "/data/local/tmp/"
#define NETPERF_NULL "/dev/null"
#define FILE_SEP "/"
#else
/* comply with FHS: http://www.pathname.com/fhs/pub/fhs-2.3.html */
#define DEBUG_LOG_FILE_DIR "/var/log/"
#define NETPERF_NULL "/dev/null"
#define FILE_SEP "/"
#endif
#endif /* DEBUG_LOG_FILE_DIR */
#ifndef DEBUG_LOG_FILE
#define DEBUG_LOG_FILE "netserver.debug_XXXXXX"
#endif
#if !defined(PATH_MAX)
#define PATH_MAX MAX_PATH
#endif
char FileName[PATH_MAX];
char listen_port[10];
struct listen_elt {
SOCKET fd;
struct listen_elt *next;
};
struct listen_elt *listen_list = NULL;
SOCKET server_control;
int child; /* are we the child of inetd or a parent netserver?
*/
int netperf_daemon;
int daemon_parent = 0;
int not_inetd;
int want_daemonize;
int spawn_on_accept;
int suppress_debug = 0;
extern char *optarg;
extern int optind, opterr;
/* char *passphrase = NULL; */
static void
init_netserver_globals() {
#if defined(__VMS) || defined(VMWARE_UW)
spawn_on_accept = 0;
want_daemonize = 0;
#else
spawn_on_accept = 1;
#if defined(WIN32)
/* we only know how to spawn in WIN32, not daemonize */
want_daemonize = 0;
#else
want_daemonize = 1;
#endif /* WIN32 */
#endif /* __VMS || VMWARE_UW */
child = 0;
not_inetd = 0;
netperf_daemon = 0;
}
void
unlink_empty_debug_file() {
#if !defined(WIN32)
struct stat buf;
if (stat(FileName,&buf)== 0) {
if (buf.st_size == 0)
unlink(FileName);
}
#endif
}
/* it is important that set_server_sock() be called before this
routine as we depend on the control socket being dup()ed out of the
way when we go messing about with the streams. */
void
open_debug_file()
{
FILE *rd_null_fp;
if (where != NULL) fflush(where);
if (suppress_debug) {
FileName = NETPERF_NULL;
where = fopen(Filename, "w");
} else {
snprintf(FileName, sizeof(FileName), "%s" FILE_SEP "%s",
DEBUG_LOG_FILE_DIR, DEBUG_LOG_FILE);
where = mkstemp(FileName);
}
if (where == NULL) {
fprintf(stderr, "netserver: %s debug file : %s",
FileName, strerror(errno));
exit(1);
}
#if !defined(WIN32)
chmod(FileName,0644);
/* redirect stdin to "/dev/null" */
rd_null_fp = fopen(NETPERF_NULL,"r");
if (NULL == rd_null_fp) {
fprintf(where,
"%s: opening of %s failed: %s (errno %d)\n",
__FUNCTION__,
NETPERF_NULL,
strerror(errno),
errno);
fflush(where);
exit(1);
}
if (close(STDIN_FILENO) == -1) {
fprintf(where,
"%s: close of STDIN_FILENO failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
if (dup(fileno(rd_null_fp)) == -1) {
fprintf(where,
"%s: dup of rd_null_fp to stdin failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
/* redirect stdout to "where" */
if (close(STDOUT_FILENO) == -1) {
fprintf(where,
"%s: close of STDOUT_FILENO failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
if (dup(fileno(where)) == -1) {
fprintf(where,
"%s: dup of where to stdout failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
/* redirect stderr to "where" */
if (close(STDERR_FILENO) == -1) {
fprintf(where,
"%s: close of STDERR_FILENO failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
if (dup(fileno(where)) == -1) {
fprintf(where,
"%s: dup of where to stderr failed: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(where);
exit(1);
}
#else
/* Hopefully, by closing stdout & stderr, the subsequent fopen calls
will get mapped to the correct std handles. */
fclose(stdout);
if ((where = fopen(FileName, "w")) == NULL) {
perror("netserver: fopen of debug file as new stdout failed!");
exit(1);
}
fclose(stderr);
if ((where = fopen(FileName, "w")) == NULL) {
fprintf(stdout, "fopen of debug file as new stderr failed!\n");
exit(1);
}
#endif
}
/* so, either we are a child of inetd in which case server_sock should
be stdin, or we are a child of a netserver parent. there will be
logic here for all of it, including Windows. it is important that
this be called before open_debug_file() */
void
set_server_sock() {
if (debug) {
fprintf(where,
"%s: enter\n",
__FUNCTION__);
fflush(where);
}
#ifdef WIN32
server_sock = (SOCKET)GetStdHandle(STD_INPUT_HANDLE);
#elif !defined(__VMS)
if (server_sock != INVALID_SOCKET) {
fprintf(where,"Yo, Iz ain't invalid!\n");
fflush(where);
exit(1);
}
/* we dup this to up the reference count so when we do redirection
of the io streams we don't accidentally toast the control
connection in the case of our being a child of inetd. */
server_sock = dup(0);
#else
if ((server_sock =
socket(TCPIP$C_AUXS, SOCK_STREAM, 0)) == INVALID_SOCKET) {
fprintf(stderr,
"%s: failed to grab aux server socket: %s (errno %s)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(stderr);
exit(1);
}
#endif
}
void
create_listens(char hostname[], char port[], int af) {
struct addrinfo hints;
struct addrinfo *local_res;
struct addrinfo *local_res_temp;
int count, error;
int on = 1;
SOCKET temp_socket;
struct listen_elt *temp_elt;
if (debug) {
fprintf(stderr,
"%s: called with host '%s' port '%s' family %s(%d)\n",
__FUNCTION__,
hostname,
port,
inet_ftos(af),
af);
fflush(stderr);
}
memset(&hints,0,sizeof(hints));
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
count = 0;
do {
error = getaddrinfo((char *)hostname,
(char *)port,
&hints,
&local_res);
count += 1;
if (error == EAI_AGAIN) {
if (debug) {
fprintf(stderr,
"%s: Sleeping on getaddrinfo EAI_AGAIN\n",
__FUNCTION__);
fflush(stderr);
}
sleep(1);
}
} while ((error == EAI_AGAIN) && (count <= 5));
if (error) {
if (debug) {
fprintf(stderr,
"%s: could not resolve remote '%s' port '%s' af %d\n"
"\tgetaddrinfo returned %s (%d)\n",
__FUNCTION__,
hostname,
port,
af,
gai_strerror(error),
error);
}
return;
}
if (debug) {
dump_addrinfo(stderr, local_res, hostname, port, af);
}
local_res_temp = local_res;
while (local_res_temp != NULL) {
temp_socket = socket(local_res_temp->ai_family,SOCK_STREAM,0);
if (temp_socket == INVALID_SOCKET) {
if (debug) {
fprintf(stderr,
"%s could not allocate a socket: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(stderr);
}
local_res_temp = local_res_temp->ai_next;
continue;
}
/* happiness and joy, keep going */
if (setsockopt(temp_socket,
SOL_SOCKET,
SO_REUSEADDR,
(char *)&on ,
sizeof(on)) == SOCKET_ERROR) {
if (debug) {
fprintf(stderr,
"%s: warning: could not set SO_REUSEADDR: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(stderr);
}
}
/* still happy and joyful */
if ((bind(temp_socket,
local_res_temp->ai_addr,
local_res_temp->ai_addrlen) != SOCKET_ERROR) &&
(listen(temp_socket,1024) != SOCKET_ERROR)) {
/* OK, now add to the list */
temp_elt = (struct listen_elt *)malloc(sizeof(struct listen_elt));
if (temp_elt) {
temp_elt->fd = temp_socket;
if (listen_list) {
temp_elt->next = listen_list;
}
else {
temp_elt->next = NULL;
}
listen_list = temp_elt;
}
else {
fprintf(stderr,
"%s: could not malloc a listen_elt\n",
__FUNCTION__);
fflush(stderr);
exit(1);
}
}
else {
/* we consider a bind() or listen() failure a transient and try
the next address */
if (debug) {
fprintf(stderr,
"%s: warning: bind or listen call failure: %s (errno %d)\n",
__FUNCTION__,
strerror(errno),
errno);
fflush(stderr);
}
close(temp_socket);
}
local_res_temp = local_res_temp->ai_next;
}
}
void
setup_listens(char name[], char port[], int af) {
int do_inet;
int no_name = 0;
#ifdef AF_INET6
int do_inet6;
#endif
if (debug) {
fprintf(where,
"%s: enter\n",
__FUNCTION__);
fflush(where);
}
if (strcmp(name,"") == 0) {
no_name = 1;
switch (af) {
case AF_UNSPEC:
do_inet = 1;
#ifdef AF_INET6
do_inet6 = 1;
#endif
break;
case AF_INET:
do_inet = 1;
#ifdef AF_INET6
do_inet6 = 0;
#endif
break;
#ifdef AF_INET6
case AF_INET6:
do_inet = 0;
do_inet6 = 1;
break;
#endif
default:
do_inet = 1;
}
/* if we have IPv6, try that one first because it may be a superset */
#ifdef AF_INET6
if (do_inet6)
create_listens("::0",port,AF_INET6);
#endif
if (do_inet)
create_listens("0.0.0.0",port,AF_INET);
}
else {
create_listens(name,port,af);
}
if (listen_list) {
fprintf(stdout,
"Starting netserver with host '%s' port '%s' and family %s\n",
(no_name) ? "IN(6)ADDR_ANY" : name,
port,
inet_ftos(af));
fflush(stdout);
}
else {
fprintf(stderr,
"Unable to start netserver with '%s' port '%s' and family %s\n",
(no_name) ? "IN(6)ADDR_ANY" : name,
port,
inet_ftos(af));
fflush(stderr);
exit(1);
}
}
SOCKET
set_fdset(struct listen_elt *list, fd_set *fdset) {
struct listen_elt *temp;
SOCKET max = INVALID_SOCKET;
FD_ZERO(fdset);
temp = list;
if (debug) {
fprintf(where,
"%s: enter list %p fd_set %p\n",
__FUNCTION__,
list,
fdset);
fflush(where);
}
while (temp) {
if (temp->fd > max)
max = temp->fd;
if (debug) {
fprintf(where,
"setting %d in fdset\n",
temp->fd);
fflush(where);
}
FD_SET(temp->fd,fdset);
temp = temp->next;
}
return max;
}
void
close_listens(struct listen_elt *list) {
struct listen_elt *temp;
if (debug) {
fprintf(where,
"%s: enter\n",
__FUNCTION__);
fflush(where);
}
temp = list;
while (temp) {
close(temp->fd);
temp = temp->next;
}
}
static int
recv_passphrase() {
/* may need to revisit the timeout. we only respond if there is an
error with receiving the passphrase */
if ((recv_request_timed_n(0,20) > 0) &&
(netperf_request.content.request_type == PASSPHRASE) &&
(!strcmp(passphrase,
(char *)netperf_request.content.test_specific_data))) {
/* it was okey dokey */
return 0;
}
#if defined(SEND_PASSPHRASE_RESPONSE)
netperf_response.content.response_type = PASSPHRASE;
netperf_response.content.serv_errno = 403;
snprintf((char *)netperf_response.content.test_specific_data,
sizeof(netperf_response.content.test_specific_data),
"Sorry, unable to match with required passphrase\n");
send_response_n(0);
#endif
fprintf(where,
"Unable to match required passphrase. Closing control connection\n");
fflush(where);
close(server_sock);
return -1;
}
/* This routine implements the "main event loop" of the netperf server
code. Code above it will have set-up the control connection so it
can just merrily go about its business, which is to "schedule"
performance tests on the server. */
void
process_requests()
{
float temp_rate;
if (debug) {
fprintf(where,
"%s: enter\n",
__FUNCTION__);
fflush(where);
}
/* if the netserver was started with a passphrase, look for it in
the first request to arrive. if there is no passphrase in the
first request we will end-up dumping the control connection. raj
2012-01-23 */
if ((passphrase != NULL) && (recv_passphrase()))
return;
while (1) {
if (recv_request() <= 0) {
close(server_sock);
return;
}
switch (netperf_request.content.request_type) {
case DEBUG_ON:
netperf_response.content.response_type = DEBUG_OK;
if (!suppress_debug) {
debug++;
if (debug == 1) {
/* we just flipped-on debugging, dump the request because
recv_request/recv_request_n will not have dumped it as its
dump_request() call is conditional on debug being set. raj
2011-07-08 */
dump_request();
}
}
send_response();
break;
case DEBUG_OFF:
if (debug)
debug--;
netperf_response.content.response_type = DEBUG_OK;
send_response();
/* we used to take the trouble to close the debug file, but SAF
asked a good question when he asked "Why?" and since I cannot
think of a good reason, I have removed the code. raj
2011-07-08 */
break;
case DO_SYSINFO:
{
netperf_response.content.response_type = SYSINFO_RESPONSE;
snprintf((char *)netperf_response.content.test_specific_data,
sizeof(netperf_response.content.test_specific_data),
"%c%s%c%s%c%s%c%s",
',',
"Deprecated",
','
, "Deprecated",
',',
"Deprecated",
',',
"Deprecated");
send_response_n(0);
break;
}
case CPU_CALIBRATE:
netperf_response.content.response_type = CPU_CALIBRATE;
temp_rate = calibrate_local_cpu(0.0);
bcopy((char *)&temp_rate,
(char *)netperf_response.content.test_specific_data,
sizeof(temp_rate));
bcopy((char *)&lib_num_loc_cpus,
(char *)netperf_response.content.test_specific_data +
sizeof(temp_rate),
sizeof(lib_num_loc_cpus));
if (debug) {
fprintf(where,
"netserver: sending CPU information: rate is %g num cpu %d\n",
temp_rate,
lib_num_loc_cpus);
fflush(where);
}
/* we need the cpu_start, cpu_stop in the looper case to kill
the child proceses raj 7/95 */
#ifdef USE_LOOPER
cpu_start(1);
cpu_stop(1,&temp_rate);
#endif /* USE_LOOPER */
send_response();
break;
case DO_TCP_STREAM:
recv_tcp_stream();
break;
case DO_TCP_MAERTS:
recv_tcp_maerts();
break;
case DO_TCP_RR:
recv_tcp_rr();
break;
case DO_TCP_CRR:
recv_tcp_conn_rr();
break;
case DO_TCP_CC:
recv_tcp_cc();
break;
#ifdef DO_1644
case DO_TCP_TRR:
recv_tcp_tran_rr();
break;
#endif /* DO_1644 */
#ifdef DO_NBRR
case DO_TCP_NBRR:
recv_tcp_nbrr();
break;
#endif /* DO_NBRR */
case DO_UDP_STREAM:
recv_udp_stream();
break;
case DO_UDP_RR:
recv_udp_rr();
break;
#ifdef WANT_DLPI
case DO_DLPI_CO_RR:
recv_dlpi_co_rr();
break;
case DO_DLPI_CL_RR:
recv_dlpi_cl_rr();
break;
case DO_DLPI_CO_STREAM:
recv_dlpi_co_stream();
break;
case DO_DLPI_CL_STREAM:
recv_dlpi_cl_stream();
break;
#endif /* WANT_DLPI */
#ifdef WANT_UNIX
case DO_STREAM_STREAM:
recv_stream_stream();
break;
case DO_STREAM_RR:
recv_stream_rr();
break;
case DO_DG_STREAM:
recv_dg_stream();
break;
case DO_DG_RR:
recv_dg_rr();
break;
#endif /* WANT_UNIX */
#ifdef WANT_XTI
case DO_XTI_TCP_STREAM:
recv_xti_tcp_stream();
break;
case DO_XTI_TCP_RR:
recv_xti_tcp_rr();
break;
case DO_XTI_UDP_STREAM:
recv_xti_udp_stream();
break;
case DO_XTI_UDP_RR:
recv_xti_udp_rr();
break;
#endif /* WANT_XTI */
#ifdef WANT_SCTP
case DO_SCTP_STREAM:
recv_sctp_stream();
break;
case DO_SCTP_STREAM_MANY:
recv_sctp_stream_1toMany();
break;
case DO_SCTP_RR:
recv_sctp_rr();
break;
case DO_SCTP_RR_MANY:
recv_sctp_rr_1toMany();
break;
#endif
#ifdef WANT_SDP
case DO_SDP_STREAM:
recv_sdp_stream();
break;
case DO_SDP_MAERTS:
recv_sdp_maerts();
break;
case DO_SDP_RR:
recv_sdp_rr();
break;
#endif
#ifdef WANT_OMNI
case DO_OMNI:
recv_omni();
break;
#endif
case PASSPHRASE:
if (debug) {
fprintf(where,"Ignoring an unexpected passphrase control message\n");
fflush(where);
}
break;
default:
fprintf(where,"unknown test number %d\n",
netperf_request.content.request_type);
fflush(where);
netperf_response.content.serv_errno=998;
send_response();
break;
}
}
}
/* the routine we call when we are going to spawn/fork/whatnot a child
process from the parent netserver daemon. raj 2011-07-08 */
void
spawn_child() {
#if defined(HAVE_FORK)
if (debug) {
fprintf(where,
"%s: enter\n",
__FUNCTION__);