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echoping/SRC/echoping.c
Stephane Bortzmeyer b60d7eb6d2 New indent parameters, many spurious changes
2007-03-05 20:52:20 +00:00

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/*
* echoping : uses the TCP echo (or other TCP or UDP protocols)
* service to measure (roughly) response times.
*
* Written by Stephane Bortzmeyer <bortz@users.sourceforge.net>. See
* the AUTHORS file for other contributors.
*
* $Id$
*
* */
char *progname;
#include "echoping.h"
/*
* An option to define only if you want to drive echoping from another
* process. Useless but harmless otherwise. In practice, while OSF/1 is happy
* with it, SunOS refuses to use fflush on a NULL and Linux fails.
*/
#undef FLUSH_OUTPUT /* Not really supported, see the TODO */
/* Global variables for main and printstats */
int return_code = 0;
int rc;
unsigned int number = 1;
struct timeval max, min, total, median, stddev, temp;
struct timeval conntv, connectedtv, sendtv, recvtv;
unsigned int successes, attempts = 0;
unsigned int size = DEFLINE;
unsigned int j = 0;
int family = PF_UNSPEC;
struct result results[MAX_ITERATIONS];
struct timeval good_results[MAX_ITERATIONS];
extern int tvcmp();
int
main(argc, argv)
int argc;
const char *argv[];
{
int result;
int remaining = argc;
char **leftover;
int sockfd = -1;
struct addrinfo hints, hints_numeric, *res;
int error;
char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
#ifdef NI_WITHSCOPEID
const int niflags = NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID;
#else
const int niflags = NI_NUMERICHOST | NI_NUMERICSERV;
#endif
FILE *files = NULL;
CHANNEL channel;
int verbose = FALSE;
int dump_config = FALSE;
int module_find = FALSE;
int n, nr = 0;
#ifdef OPENSSL
int sslcode;
char rand_file[MAX_LINE];
#endif
char *sendline, recvline[MAX_LINE + 1];
boolean accept_http_redirects = FALSE;
char *http_hostname = NULL;
#ifdef ICP
char retcode[DEFLINE];
int length;
#endif
struct timeval newtv, oldtv;
void printstats();
#ifdef HAVE_USLEEP
float wait = 1.0;
#else
unsigned int wait = 1;
#endif
unsigned char fill = ' ';
char *fill_s;
boolean fill_requested = FALSE;
unsigned int i = 0;
char *plugin_name = NULL;
char *complete_plugin_name = NULL;
char *ext;
void *plugin = NULL;
int plugin_result;
void to_alarm(); /* our alarm() signal handler */
void interrupted();
unsigned int timeout = 10;
boolean timeout_requested = 0;
boolean size_requested = 0;
char *url = "";
#if USE_SIGACTION
struct sigaction mysigaction;
#endif
char *plugin_port_name, *port_name;
boolean plugin_raw = FALSE;
boolean port_to_use = USE_ECHO;
boolean http = 0;
boolean smtp = 0;
boolean discard = 0;
boolean chargen = 0;
boolean udp = 0;
boolean icp = 0;
boolean nocache = 0;
#ifdef ICP
icp_opcode opcode = ICP_OP_QUERY;
#endif
boolean ttcp = 0;
boolean tcp = 0;
boolean ssl = 0;
boolean stop_at_newlines = 1;
#ifdef OPENSSL
SSL_METHOD *meth;
SSL_CTX *ctx = NULL;
SSL *sslh = NULL;
#endif
#ifdef GNUTLS
gnutls_session session;
gnutls_certificate_credentials xcred;
int tls_result;
const int cert_type_priority[3] = { GNUTLS_CRT_X509,
GNUTLS_CRT_OPENPGP, 0
};
#endif
int priority;
int priority_requested = 0;
int tos;
int tos_requested = 0;
char *p;
echoping_options global_options;
/* popt variables */
const struct poptOption options[] = {
{"verbose", 'v', POPT_ARG_NONE, &verbose, 'v'},
{"dump-configuration", 'V', POPT_ARG_NONE, &dump_config, 'V',
"Displays echoping compiled-in configuration"},
{"help", '?', POPT_ARG_NONE, NULL, '?'},
{"size", 's', POPT_ARG_INT, &size, 's'},
{"number", 'n', POPT_ARG_INT, &number, 'n', "Number of iterations"},
#ifdef HAVE_USLEEP
{"wait", 'w', POPT_ARG_FLOAT, &wait, 'w',
"Delay between iterations"},
#else
{"wait", 'w', POPT_ARG_INT, &wait, 'w', "Delay between iterations"},
#endif
{"discard", 'd', POPT_ARG_NONE, &discard, 'd'},
{"chargen", 'c', POPT_ARG_NONE, &chargen, 'c'},
{"http", 'h', POPT_ARG_STRING, &url, 'h'},
{"accept-http-redirects", 'R', POPT_ARG_NONE, &accept_http_redirects,
'R',
"Accept HTTP return codes 3xx (redirections)"},
{"hostname", 'H', POPT_ARG_STRING, &http_hostname, 'H',
"Hostname to use in HTTP Host: header"},
{"icp", 'i', POPT_ARG_STRING, &url, 'i',
"ICP protocol, for Web proxies/caches"},
{"ttcp", 'r', POPT_ARG_NONE, &ttcp, 'r',
"Use the T/TCP protocol (Transaction TCP)"},
{"udp", 'u', POPT_ARG_NONE, &udp, 'u'},
{"timeout", 't', POPT_ARG_INT, &timeout, 't'},
{"fill", 'f', POPT_ARG_STRING, &fill_s, 'f'},
{"smtp", 'S', POPT_ARG_NONE, &smtp, 'S'},
{"ssl", 'C', POPT_ARG_NONE, &ssl, 'C'},
{"priority", 'p', POPT_ARG_INT, &priority, 'p'},
{"type-of-service", 'P', POPT_ARG_INT, &tos, 'P'},
{"check-original", 'a', POPT_ARG_NONE, NULL, 'a',
"For HTTP through a proxy/cache"},
{"ignore-cache", 'A', POPT_ARG_NONE, NULL, 'A',
"For HTTP through a proxy/cache"},
{"ipv4", '4', POPT_ARG_NONE, NULL, '4'},
{"ipv6", '6', POPT_ARG_NONE, NULL, '6'},
{"module", 'm', POPT_ARG_STRING, &plugin_name, 'm',
"Loads the given plugin"},
POPT_TABLEEND
};
poptContext poptcon;
global_options.udp = FALSE;
global_options.ttcp = FALSE;
global_options.verbose = FALSE;
null_timeval.tv_sec = 0;
null_timeval.tv_usec = 0;
max_timeval.tv_sec = 1000000000;
max_timeval.tv_usec = 999999;
return_code = 0;
number = 1;
total = null_timeval;
median = null_timeval;
max = null_timeval;
min = max_timeval;
stddev = null_timeval;
port_name = malloc(NI_MAXSERV);
strcpy(port_name, ECHO_TCP_PORT);
for (i = 0; i <= MAX_ITERATIONS; i++) {
results[i].valid = 0;
}
progname = (char *) argv[0];
poptcon =
poptGetContext(NULL, argc, argv, options, POPT_CONTEXT_POSIXMEHARDER);
while ((result = poptGetNextOpt(poptcon)) != -1) {
if (result < -1) {
fprintf(stderr, "%s: %s\n",
poptBadOption(poptcon, POPT_BADOPTION_NOALIAS),
poptStrerror(result));
usage(poptcon);
}
remaining--;
switch ((char) result) {
case '?':
poptPrintHelp(poptcon, stdout, 0);
fprintf(stdout, " hostname [plugin-options...]\n");
fprintf(stdout,
" (You can get a list of available plugins with \"ls %s\")\n",
PLUGINS_DIR);
exit(0);
case 'V':
printf("%s\n", COMPILATION_OPTIONS);
exit(0);
case 'v':
break;
case 'r':
break;
case 'u':
break;
case 'C':
break;
case 'd':
strcpy(port_name, DISCARD_TCP_PORT);
port_to_use = USE_DISCARD;
break;
case 'c':
strcpy(port_name, CHARACTER_GENERATOR_TCP_PORT);
port_to_use = USE_CHARGEN;
stop_at_newlines = 0;
break;
case 'i':
remaining--;
strcpy(port_name, DEFAULT_ICP_UDP_PORT);
port_to_use = USE_ICP;
udp = 1;
icp = 1;
break;
case 'h':
remaining--;
strcpy(port_name, DEFAULT_HTTP_TCP_PORT);
port_to_use = USE_HTTP;
http = 1;
break;
case 'R':
accept_http_redirects = TRUE;
break;
case 'H':
remaining--;
break;
case 'a':
nocache = 1;
break;
case 'A':
nocache = 2;
break;
case 'f':
remaining--;
if (strlen(fill_s) > 1)
err_quit
("Argument --fill should be a one-character string");
fill = fill_s[0];
fill_requested = 1;
break;
case 'S':
strcpy(port_name, "smtp");
port_to_use = USE_SMTP;
break;
case 'p':
remaining--;
priority_requested = 1;
break;
case 'P':
remaining--;
tos_requested = 1;
break;
case 's':
remaining--;
if (size > MAX_LINE) {
(void) fprintf(stderr,
"%s: packet size too large, max is %d.\n",
progname, MAX_LINE);
exit(1);
}
if (size <= 0) {
(void) fprintf(stderr, "%s: illegal packet size.\n",
progname);
exit(1);
}
size_requested = 1;
break;
case 't':
remaining--;
timeout_requested = 1;
if (size <= 0) {
(void) fprintf(stderr, "%s: illegal timeout.\n",
progname);
exit(1);
}
break;
case 'n':
remaining--;
if (number > MAX_ITERATIONS) {
(void) fprintf(stderr,
"%s: number of iterations too large, max is %d.\n",
progname, MAX_ITERATIONS);
exit(1);
}
if (number <= 0) {
(void) fprintf(stderr,
"%s: illegal number of iterations.\n",
progname);
exit(1);
}
break;
case 'w':
remaining--;
if (wait <= 0)
/*
* atoi returns zero when there is an error.
* So we cannot use '-w 0' to specify no
* waiting.
*/
{
(void) fprintf(stderr,
"%s: illegal waiting time.\n",
progname);
exit(1);
}
break;
case '4':
family = AF_INET;
break;
case '6':
family = AF_INET6;
break;
case 'm':
remaining--;
module_find = TRUE;
break;
default:
printf("Unknown character option %d (%c)", result,
(char) result);
usage(poptcon);
}
}
if (udp && ((port_to_use == USE_CHARGEN) ||
(port_to_use == USE_HTTP) || (port_to_use == USE_SMTP))) {
(void) fprintf(stderr,
"%s: I don't know how to use this port with UDP.\n",
progname);
exit(1);
}
if ((http || smtp) && (fill_requested)) {
(void) fprintf(stderr,
"%s: Filling incompatible with HTTP connections.\n",
progname);
exit(1);
}
#ifndef USE_TTCP
if (ttcp) {
(void) fprintf(stderr,
"%s: not compiled with T/TCP support.\n", progname);
exit(1);
}
#endif
#if ! (defined(OPENSSL) || defined(GNUTLS))
if (ssl) {
(void) fprintf(stderr,
"%s: not compiled with SSL/TLS support.\n", progname);
exit(1);
}
#endif
#ifndef HTTP
if (http) {
(void) fprintf(stderr, "%s: Not compiled with HTTP support.\n",
progname);
exit(1);
}
#endif
#ifndef SMTP
if (smtp) {
(void) fprintf(stderr, "%s: Not compiled with SMTP support.\n",
progname);
exit(1);
}
#endif
#ifndef ICP
if (icp) {
(void) fprintf(stderr, "%s: Not compiled with ICP support.\n",
progname);
exit(1);
}
#endif
if ((http || smtp) && size_requested) {
(void) fprintf(stderr,
"%s: %s and message size specification are incompatible.\n",
progname, http ? "HTTP" : "SMTP");
exit(1);
}
if (ssl && !http) {
(void) fprintf(stderr,
"%s: SSL is only supported for HTTP requests.\n",
progname);
exit(1);
}
if (udp && ttcp) {
(void) fprintf(stderr, "%s: UDP and T/TCP are incompatible.\n",
progname);
exit(1);
}
if (ssl && http) {
strcpy(port_name, DEFAULT_HTTPS_TCP_PORT);
}
if (!http && accept_http_redirects) {
(void) fprintf(stderr,
"%s: accept-http-redirects does not make sens if you do not use HTTP.\n",
progname);
exit(1);
}
#ifndef USE_TOS
if (tos_requested) {
(void) fprintf(stderr,
"%s: Not compiled with Type Of Service support.\n",
progname);
exit(1);
}
#endif
#ifndef USE_PRIORITY
if (priority_requested) {
(void) fprintf(stderr,
"%s: Not compiled with socket priority support.\n",
progname);
exit(1);
}
#endif
remaining--; /* No argv[0] this time */
leftover = (char **) &argv[argc - remaining];
if (plugin_name) {
ext = strstr(plugin_name, ".so");
if ((ext == NULL) || (strcmp(ext, ".so") != 0))
sprintf(plugin_name, "%s.so", plugin_name);
plugin = dlopen(plugin_name, RTLD_NOW);
if (!plugin) {
/* Retries with the absolute name */
complete_plugin_name = (char *) malloc(MAX_LINE);
sprintf(complete_plugin_name, "%s/%s", PLUGINS_DIR,
plugin_name);
plugin = dlopen(complete_plugin_name, RTLD_NOW);
}
if (!plugin) {
#if DEBIAN
/* A bit of help for the poor user */
fprintf(stderr,
"You may have to load the recommended packages "
"to run this plugin.\n"
"'dpkg -s echoping | grep Recommends' to know them.\n\n");
#endif
err_sys
("Cannot load \"%s\" (I tried the short name, then the complete name in \"%s\"): %s",
plugin_name, PLUGINS_DIR, dlerror());
}
plugin_init = dlsym(plugin, "init");
if (!plugin_init) {
err_sys("Cannot find init in %s: %s", plugin_name,
dlerror());
}
global_options.udp = udp;
global_options.ttcp = ttcp;
global_options.verbose = verbose;
if (family == AF_INET)
global_options.only_ipv4 = 1;
else
global_options.only_ipv4 = 0;
if (family == AF_INET6)
global_options.only_ipv6 = 1;
else
global_options.only_ipv6 = 0;
plugin_port_name =
plugin_init(remaining, (const char **) leftover, global_options);
if (plugin_port_name != NULL) {
strcpy(port_name, plugin_port_name);
plugin_raw = FALSE;
plugin_start = dlsym(plugin, "start");
if (!plugin_start) {
err_sys("Cannot find start in %s: %s", plugin_name,
dlerror());
}
} else {
port_name = 0;
plugin_raw = TRUE;
plugin_raw_start = dlsym(plugin, "start_raw");
if (!plugin_raw_start) {
err_sys("Cannot find start_raw in %s: %s",
plugin_name, dlerror());
}
}
plugin_execute = dlsym(plugin, "execute");
if (!plugin_execute) {
err_sys("Cannot find execute in %s: %s", plugin_name,
dlerror());
}
plugin_terminate = dlsym(plugin, "terminate");
if (!plugin_terminate) {
err_sys("Cannot find terminate in %s: %s", plugin_name,
dlerror());
}
}
if (!udp && !ttcp) {
tcp = 1;
}
if (remaining == 0) {
(void) fprintf(stderr, "No host name indicated\n");
usage(poptcon);
}
if (!module_find && remaining != 1) {
printf("%d args remaining, should be 1\n", remaining);
usage(poptcon);
}
if (verbose) {
printf("\nThis is %s, version %s.\n\n", progname, VERSION);
}
server = leftover[0];
#ifdef LIBIDN
locale_server = server;
utf8_server = stringprep_locale_to_utf8(server);
if (utf8_server)
server = utf8_server;
else
err_quit("Cannot convert %s to UTF-8 encoding: wrong locale (%s)?",
server, stringprep_locale_charset());
#endif
if (!http && !icp) {
for (p = server; *p && (*p != ':'); p++) {
}
if (*p && (*p == ':')) {
(void) fprintf(stderr,
"%s: The syntax hostname:port is only for HTTP or ICP\n",
progname);
exit(1);
}
}
signal(SIGINT, interrupted);
memset(&hints, 0, sizeof(hints));
hints.ai_family = family;
hints.ai_socktype = udp ? SOCK_DGRAM : SOCK_STREAM;
#ifdef HTTP
if (http || icp) {
char *text_port = NULL;
if (*server == '[') { /* RFC 2732 */
server++;
for (p = server; *p && *p != ']'; p++) {
}
p++;
if (*p == ':') {
p--;
*p = 0;
text_port = p + 2;
strncpy(port_name, text_port, NI_MAXSERV);
} else {
p--;
if (*p == ']') {
/* No port number */
*p = 0;
} else {
(void) fprintf(stderr,
"%s: Invalid syntax for IPv6 address.\n",
progname);
exit(1);
}
}
} else {
for (p = server; *p; p++) {
if (*p == ':') {
*p = 0;
text_port = p + 1;
if (strcmp(text_port, "")) /* See bug *
* #850672 */
strncpy(port_name, text_port,
NI_MAXSERV);
}
}
}
if (text_port == NULL || !strcmp(text_port, "")) {
error = getaddrinfo(server, port_name, &hints, &res);
if (error) {
if (error == EAI_SERVICE) {
if (strcmp(port_name, DEFAULT_HTTP_TCP_PORT)
== 0) {
strcpy(port_name, "80");
} else
if (strcmp
(port_name, DEFAULT_HTTPS_TCP_PORT)
== 0) {
strcpy(port_name, "443");
} else
if (strcmp
(port_name, DEFAULT_ICP_UDP_PORT)
== 0) {
strcpy(port_name, "3130");
}
}
}
}
}
#endif
#ifdef LIBIDN
/*
* Check if it is an address or a name (libidn will have trouble with
* IPv6 addresses otherwise)
*/
memset(&hints_numeric, 0, sizeof(hints_numeric));
hints_numeric.ai_family = family;
hints_numeric.ai_flags = AI_NUMERICHOST;
error = getaddrinfo(server, port_name, &hints_numeric, &res);
if (error && error == EAI_NONAME) { /* A name, not an address */
if ((result =
idna_to_ascii_8z(utf8_server, &ace_server,
IDNA_USE_STD3_ASCII_RULES)) != IDNA_SUCCESS) {
if (result == IDNA_CONTAINS_LDH)
err_quit("Illegal name for host: %s", server); /* foo@bar
* or
* similar
* errors */
else
err_quit("IDN error for host: %s %d", server,
result);
}
if (strcmp(utf8_server, ace_server)) {
if (verbose)
printf("ACE name of the server: %s\n", ace_server);
server = ace_server;
}
} /* Else it is an address, do not IDNize it */
#endif
if (!plugin || !plugin_raw) {
error = getaddrinfo(server, port_name, &hints, &res);
if (error) {
err_quit("getaddrinfo error for host: %s %s",
server, gai_strerror(error));
}
if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
pbuf, sizeof(pbuf), niflags) != 0) {
strcpy(hbuf, "?");
strcpy(pbuf, "?");
}
}
if (plugin) {
if (verbose) {
printf("Running start() for the plugin %s...\n",
plugin_name);
}
if (plugin_raw)
plugin_raw_start();
else
plugin_start(res);
}
#ifdef HTTP
if (http) {
if (http_hostname != NULL)
server = http_hostname;
sendline = make_http_sendline(url, server, atoi(pbuf), nocache);
} else
#endif
#ifdef SMTP
if (smtp) {
sendline = "QUIT\r\n"; /* Surprises some SMTP servers which log a
* frightening NOQUEUE. Anyone knows better?
*/
} else
#endif
#ifdef ICP
if (icp) {
if (res->ai_family == AF_INET) {
sendline =
make_icp_sendline(url, &(res->ai_addr), opcode, &length);
} else {
/*
* TODO: we should be able to create a ICP hostid for
* IPv6 addresses... See the Squid IPv6 patch at
* http://devel.squid-cache.org/projects.html#ipv6,
* for instance the following code.
*/
sendline =
make_icp_sendline(url, (void *) NULL, opcode, &length);
/*
* - headerp->shostid = theOutICPAddr.s_addr; + ** FIXME ** we
* should get more unique data from IPv6 address +xmemcpy
* (&headerp->shostid, &theOutICPAddr, sizeof
* (headerp->shostid)); */
}
} else
#endif
if (!fill_requested) {
sendline = random_string(size);
} else {
sendline = (char *) malloc(size + 1);
for (i = 0; i < size; i++)
sendline[i] = fill;
sendline[size] = 0;
}
n = strlen(sendline);
#ifdef OPENSSL
if (ssl) {
SSL_load_error_strings();
SSLeay_add_ssl_algorithms();
/*
* The following RAND_ calls are only for systems insecure
* enough to fail to have /dev/urandom. Bug #132001
*/
RAND_file_name(rand_file, sizeof(rand_file));
RAND_write_file(rand_file);
RAND_load_file(rand_file, 1024);
meth = SSLv23_client_method();
if ((ctx = SSL_CTX_new(meth)) == NULL)
err_sys("Cannot create a new SSL context");
/*
* Bug reported by Sebastian Siewior
* <bigeasy@foo.fh-furtwangen.de>. It seems that OpenSSL
* crashes on non blocking sockets when trying to close them
* (OpenSSL will try write on a closed socket).
*/
#ifdef USE_SIGACTION
mysigaction.sa_handler = SIG_IGN;
sigemptyset(&mysigaction.sa_mask);
if ((sigaction(SIGPIPE, &mysigaction, NULL)) < 0); /* Ignore it
*/
#else
signal(SIGPIPE, SIG_IGN);
#endif
}
#endif
#ifdef GNUTLS
if (ssl) {
gnutls_global_init();
gnutls_certificate_allocate_credentials(&xcred);
/*
* gnutls_certificate_set_x509_trust_file(xcred, CAFILE,
* GNUTLS_X509_FMT_PEM);
*/
}
#endif
for (i = 1; i <= number; i++) {
timeout_flag = 0;
if (timeout_requested)
alarm(timeout);
if (i > 1) {
#ifdef HAVE_USLEEP
/*
* SUSv3 states that the argument to usleep() shall
* be less * than 1000000, so split into two calls if
* necessary. Bug #1473872, fix by Jeff Rizzo -
* riz@sourceforge
*/
if (wait >= 1) {
sleep((unsigned int) wait);
}
usleep((wait - (unsigned int) wait) * 1000000);
#else
sleep(wait);
#endif
}
attempts++;
#ifdef OPENSSL
if (ssl)
/*
* Despite what the OpenSSL documentation says, we
* must allocate a new SSL structure at each
* iteration, otherwise, some* SSL servers fail at
* the second iteration with: error:1406D0D9:SSL
* routines:GET_SERVER_HELLO:reuse cert type not zero
* Bug #130151
*/
if ((sslh = SSL_new(ctx)) == NULL)
err_sys("Cannot initialize SSL context");
#endif
/*
* Open a socket.
*/
if (!plugin) {
if ((sockfd =
socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0)
err_sys("Can't open socket");
if (udp) {
struct addrinfo hints2, *res2;
memset(&hints2, 0, sizeof(hints2));
hints2.ai_family = res->ai_family;
hints2.ai_flags = AI_PASSIVE;
hints2.ai_socktype = SOCK_DGRAM;
error = getaddrinfo(NULL, "0", &hints2, &res2);
if (error) {
err_sys("getaddrinfo error");
}
if (bind(sockfd, res2->ai_addr, res2->ai_addrlen) <
0) {
err_sys("bind error");
}
}
#ifdef USE_PRIORITY
if (priority_requested) {
if (verbose) {
printf
("Setting socket priority to %d (0x%02x)\n",
priority, (unsigned int) priority);
}
if (setsockopt(sockfd,
SOL_SOCKET,
SO_PRIORITY,
(void *) &priority,
(socklen_t) sizeof(priority))) {
err_sys("Failed setting socket priority");
}
}
#endif
#if USE_TOS
if (tos_requested) {
if (verbose) {
printf
("Setting IP type of service octet to %d (0x%02x)\n",
tos, (unsigned int) tos);
}
if (setsockopt(sockfd,
SOL_IP,
IP_TOS, (void *) &tos,
(socklen_t) sizeof(tos))) {
err_sys
("Failed setting IP type of service octet");
}
}
#endif
}
if (verbose) {
if (!plugin) {
if (tcp) {
printf
("Trying to connect to internet address %s %s to transmit %u bytes...\n",
hbuf, pbuf, n);
}
#ifdef ICP
if (icp) {
printf
("Trying to send an ICP packet of %u bytes to the internet address %s...\n",
length, hbuf);
}
#endif
else {
printf
("Trying to send %u bytes to internet address %s...\n",
size, hbuf);
}
} else {
if (plugin_raw)
printf("Trying to call plugin %s...\n",
plugin_name);
else
printf
("Trying to call plugin %s for internet address %s %s...\n",
plugin_name, hbuf, pbuf);
}
}
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
if ((tcp || plugin) && timeout_requested) { /* echoping's
* timeout has a
* different
* semantic in TCP
* and UDP */
#ifdef USE_SIGACTION
mysigaction.sa_handler = to_alarm;
sigemptyset(&mysigaction.sa_mask);
/* Default behavior doesn't seem portable? */
#ifdef SA_INTERRUPT
mysigaction.sa_flags = SA_INTERRUPT;
#else
mysigaction.sa_flags = (int) 0;
#endif
if ((sigaction(SIGALRM, &mysigaction, NULL)) < 0)
err_sys("Cannot set signal handler");
#else
signal(SIGALRM, to_alarm);
#endif
timeout_flag = 0; /* for signal handler */
alarm(timeout);
}
(void) gettimeofday(&oldtv, (struct timezone *) NULL);
if (plugin) {
plugin_result = plugin_execute();
if (plugin_result == -2)
err_quit("");
} else {
if (!ttcp && !icp) {
/*
* Connect to the server.
*/
(void) gettimeofday(&conntv,
(struct timezone *) NULL);
if (connect(sockfd, res->ai_addr, res->ai_addrlen) <
0) {
if ((errno == EINTR) && (timeout_flag)) {
printf("Timeout while connecting\n");
close(sockfd);
continue;
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
} else
err_sys("Can't connect to server");
} else {
if (tcp) {
(void) gettimeofday(&connectedtv,
(struct timezone
*)
NULL);
temp = connectedtv;
tvsub(&temp, &conntv);
if (verbose) {
printf("Connected...\n");
printf
("TCP Latency: %d.%06d seconds\n",
(int) temp.tv_sec,
(int) temp.tv_usec);
}
}
}
if (verbose && tcp) {
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
}
if (!udp && !ssl)
if ((files = fdopen(sockfd, "r")) == NULL)
err_sys("Cannot fdopen");
#ifdef OPENSSL
if (ssl) {
SSL_set_fd(sslh, sockfd);
if (SSL_connect(sslh) == -1)
if ((errno == EINTR)
&& (timeout_flag)) {
printf
("Timeout while starting SSL\n");
close(sockfd);
continue;
}
if (verbose)
printf("SSL connection using %s\n",
SSL_get_cipher(sslh));
/*
* We could check the server's
* certificate or other funny things
*/
}
#endif
#ifdef GNUTLS
if (ssl) {
tls_result =
gnutls_init(&session, GNUTLS_CLIENT);
if (tls_result != 0)
err_sys
("Cannot create a new TLS session");
gnutls_set_default_priority(session);
gnutls_certificate_type_set_priority(session,
cert_type_priority);
gnutls_credentials_set(session,
GNUTLS_CRD_CERTIFICATE,
xcred);
gnutls_transport_set_ptr(session,
(gnutls_transport_ptr)
sockfd);
tls_result = gnutls_handshake(session);
if (tls_result < 0) {
if ((errno == EINTR)
&& (timeout_flag)) {
printf
("Timeout while starting TLS\n");
close(sockfd);
continue;
} else {
err_sys
("Cannot start the TLS session: %s",
gnutls_strerror
(tls_result));
}
}
if (verbose)
printf
("TLS connection using \"%s\"\n",
gnutls_cipher_get_name
(gnutls_cipher_get(session)));
/*
* We could check the server's
* certificate or other funny things.
* See
* http://www.gnu.org/software/gnutls/
* documentation/gnutls/gnutls.html#SE
* CTION00622000000000000000
*/
}
#endif
}
/* Not T/TCP */
else {
/* No initial connection */
}
if ((port_to_use == USE_ECHO) || (port_to_use == USE_DISCARD)
|| (port_to_use == USE_HTTP) || (port_to_use == USE_ICP)
|| (port_to_use == USE_SMTP)) {
#ifdef USE_TTCP
if (ttcp) {
if (sendto(sockfd, sendline, n, MSG_EOF,
res->ai_addr,
res->ai_addrlen) != n)
err_sys("sendto error on socket");
if (verbose) {
printf("T/TCP connection done\n");
}
} else
#endif
if (!udp) {
if (!ssl) {
/*
* Write something to the
* server
*/
if (writen(sockfd, sendline, n) != n) {
if ((nr < 0 || nr != n)
&& timeout_flag) {
printf
("Timeout while writing (%d byte(s) written so far)\n",
(nr ==
-1) ? 0 : nr);
nr = n;
close(sockfd);
continue;
} else
err_sys
("writen error on TCP socket %d",
sockfd);
}
}
#ifdef OPENSSL
else {
if ((rc =
SSL_write(sslh, sendline,
n)) != n) {
if ((nr < 0 || nr != n)
&& timeout_flag) {
nr = n;
printf
("Timeout while writing\n");
close(sockfd);
continue;
} else {
sslcode =
ERR_get_error();
err_sys
("SSL_write error on socket: %s",
ERR_error_string
(sslcode,
NULL));
}
}
}
#endif
#ifdef GNUTLS
else
{
if ((rc =
gnutls_record_send(session,
sendline,
strlen
(sendline)))
!= n) {
if ((nr < 0 || nr != n)
&& timeout_flag) {
nr = n;
printf
("Timeout while writing\n");
close(sockfd);
continue;
} else {
err_sys
("gnutls_record_send error %d on socket: %s",
rc,
gnutls_strerror
(rc));
}
}
}
#endif
} else {
#ifdef ICP
if (icp) {
if (sendto
(sockfd, sendline, length, 0,
res->ai_addr,
res->ai_addrlen) != length)
err_sys
("sendto error on socket");
} else
#endif
/*
* if (sendto(sockfd, sendline, n, 0,
* &serv_addr, sizeof(serv_addr)) != n)
* err_sys("sendto error on socket");
*/
if (send(sockfd, sendline, n, 0) != n)
err_sys("send error on socket");
}
if (verbose) {
(void) gettimeofday(&sendtv,
(struct timezone *)
NULL);
#ifdef ICP
if (icp)
printf("Sent (%d bytes)...\n",
length);
else
#endif
printf("Sent (%d bytes)...\n", n);
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
}
}
if (tcp && !discard) {
fd_set mask;
int n = 0;
FD_ZERO(&mask);
if (!(http && ssl))
n = fileno(files);
#ifdef OPENSSL
else {
n = SSL_get_fd(sslh);
}
#endif
#ifdef GNUTLS
else
{
n = sockfd;
}
#endif
FD_SET(n, &mask);
if (select(n + 1, &mask, 0, 0, NULL) > 0) {
(void) gettimeofday(&recvtv,
(struct timezone *)
NULL);
temp = recvtv;
tvsub(&temp, &sendtv);
if (verbose)
printf
("Application Latency: %d.%06d seconds\n",
(int) temp.tv_sec,
(int) temp.tv_usec);
}
}
if ((port_to_use == USE_ECHO) || (port_to_use == USE_CHARGEN)
|| (port_to_use == USE_HTTP) || (port_to_use == USE_ICP)
|| (port_to_use == USE_SMTP)) {
if (!udp) {
if (!http && !smtp && !discard) {
/* Read from the server */
nr = readline(files, recvline, n,
stop_at_newlines);
} else if (discard) {
/* No reply, no read */
}
#ifdef HTTP
else if (http) {
if (!ssl)
channel.fs = files;
#ifdef OPENSSL
else
channel.ssl = sslh;
#endif
#ifdef GNUTLS
else
channel.tls = session;
#endif
nr = read_from_server(channel, ssl,
accept_http_redirects);
}
#endif
#ifdef SMTP
else if (smtp) {
nr = smtp_read_response_from_server
(files);
}
#endif
} else {
#ifdef USE_SIGACTION
mysigaction.sa_handler = to_alarm;
sigemptyset(&mysigaction.sa_mask);
#ifdef SA_INTERRUPT
mysigaction.sa_flags = SA_INTERRUPT;
#else
mysigaction.sa_flags = (int) 0;
#endif
if ((sigaction(SIGALRM, &mysigaction, NULL))
< 0)
err_sys("Cannot set signal handler");
#else
signal(SIGALRM, to_alarm);
#endif
timeout_flag = 0; /* for signal
* handler */
#ifdef ICP
if (icp) {
nr = recv_icp(sockfd, recvline,
retcode);
if (verbose) {
printf("%s\n", retcode);
}
} else {
#endif
nr = recv(sockfd, recvline, n, 0);
/*
* nr = recvfrom(sockfd, recvline, n, 0,
* (struct sockaddr *) 0, (int *) 0);
* recvfrom fails on SunOS on connected
* sockets.
*/
/*
* Todo: in UDP, we should loop to read: we
* can have several reads necessary.
*/
if ((nr < 0) && (errno == EINTR)
&& (timeout_flag)) {
nr = n;
printf("Timeout\n");
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) !=
0) {
err_sys
("I cannot flush");
}
#endif
}
#ifdef ICP
}
#endif
}
if (!http && !icp && !smtp && !discard) {
if ((nr < 0 || nr != n) && timeout_flag)
/*
* if ((nr < 0 || nr != n) &&
* (errno == EINTR) &&
* timeout_flag)
*/
{
printf
("Timeout while reading (%d byte(s) read)\n",
(nr == -1) ? 0 : nr);
nr = n;
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
close(sockfd);
continue;
}
if (nr < 0 || nr != n)
err_sys
("readline error: %d bytes read, %d bytes requested",
nr, n);
} else
/* This is probably HTTP */
{
/*
* printf ("DEBUG: received %d bytes
* (flag is %d, errno is %d)\n", nr,
* timeout_flag, errno);
*/
if ((errno == EINTR) && timeout_flag) {
printf
("Timeout while reading (%d byte(s) read so far)\n",
(nr == -1) ? 0 : nr);
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
close(sockfd);
continue;
}
if (nr < 0) {
err_ret("Error reading HTTP reply");
}
}
if (verbose)
printf("%d bytes read from server.\n", nr);
}
} /* That's all, folks */
alarm(0);
if (http) {
#ifdef OPENSSL
if (ssl)
SSL_shutdown(channel.ssl);
else
#endif
#ifdef GNUTLS
if (ssl)
shutdown(sockfd, SHUT_RDWR);
else
#endif
fclose(channel.fs);
}
close(sockfd);
(void) gettimeofday(&newtv, (struct timezone *) NULL);
temp = newtv;
tvsub(&temp, &oldtv);
if (!timeout_flag) {
tvadd(&total, &temp);
/* Check */
if (!plugin) {
if (port_to_use == USE_ECHO) {
if (strcmp(sendline, recvline) != 0) {
printf(" I wrote:\n%s\n", sendline);
printf(" and I got back:\n%s\n",
recvline);
err_quit("Strange server");
}
if (verbose) {
printf("Checked\n");
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
}
}
if (port_to_use == USE_CHARGEN) {
sendline = CHARGENERATED;
recvline[strlen(sendline)] = 0;
if (strcmp(sendline, recvline) != 0) {
/*
* TODO: it does not work if
* the size is lower than the
* length of CHARGENERATED
*/
printf(" I got back:\n%s\n",
recvline);
printf
(" instead of the most common:\n%s\n",
sendline);
err_ret("Strange server");
}
if (verbose) {
printf("Checked\n");
}
}
}
tvsub(&newtv, &oldtv);
tvmin(&min, &newtv);
tvmax(&max, &newtv);
printf("Elapsed time: %d.%06d seconds\n",
(int) newtv.tv_sec, (int) newtv.tv_usec);
#ifdef FLUSH_OUTPUT
if (fflush((FILE *) NULL) != 0) {
err_sys("I cannot flush");
}
#endif
results[i - 1].valid = 1;
results[i - 1].timevalue = newtv;
successes++;
}
if (number > 1) {
#ifdef OPENSSL
if (ssl) {
/*
* SSL_clear (sslh); No, we have to free. Bug
* #130151
*/
SSL_free(sslh);
}
#endif
#ifdef GNUTLS
if (ssl) {
gnutls_bye(channel.tls, GNUTLS_SHUT_RDWR);
gnutls_deinit(session);
/*
* gnutls_certificate_free_credentials(xcred);
*
*/
}
#endif
}
} /* End of main loop */
/* Clean */
if (plugin)
plugin_terminate();
/* It would be nice to clean here for OpenSSL */
#ifdef GNUTLS
if (ssl) {
gnutls_global_deinit();
}
#endif
printstats();
if (successes >= 1)
exit(0);
else
exit(1);
}
void
printstats()
{
int i;
/* if ((number > 1) && ((!udp) || (successes > 0))) { */
if (successes > 1) {
printf("---\n");
if (successes < attempts)
printf("Warning: %d message(s) lost (%d %%)\n",
attempts - successes,
((attempts - successes) * 100) / attempts);
printf("Minimum time: %d.%06d seconds (%.0f bytes per sec.)\n",
(int) min.tv_sec, (int) min.tv_usec,
(double) size / tv2double(min));
printf("Maximum time: %d.%06d seconds (%.0f bytes per sec.)\n",
(int) max.tv_sec, (int) max.tv_usec,
(double) size / tv2double(max));
tvavg(&total, successes);
printf("Average time: %d.%06d seconds (%.0f bytes per sec.)\n",
(int) total.tv_sec, (int) total.tv_usec,
(double) size / tv2double(total));
/*
* The number of bytes/second, as printed above, is not
* really meaningful: size does not reflect the number of
* bytes exchanged. With echo, N = 2*size, with discard, N =
* size, with http, N = size + (response)...
*/
tvstddev(&stddev, successes, total, results);
printf("Standard deviation: %d.%06d\n",
(int) stddev.tv_sec, (int) stddev.tv_usec);
for (i = 0; i < number; i++) {
if (results[i].valid)
good_results[j++] = results[i].timevalue;
}
if (successes != j) /* Todo: bug! */
err_quit("successes (%d) is different from j (%d)",
successes, j);
qsort(good_results, successes, sizeof(struct timeval), tvcmp);
/*
* for (i = 1; i <= number; i++) { printf("---\nTime %d th:
* %d.%06d seconds\n", i, results[i-1].tv_sec,
* results[i-1].tv_usec); }
*/
if ((successes % 2) == 1) {
/*
* printf("Searching good_results[%d]\n", (successes
* + 1) / 2 - 1);
*/
median = good_results[((successes + 1) / 2 - 1)];
} else {
/*
* printf("Searching good_results[%d] and [%d]\n",
* (successes / 2) - 1, successes / 2);
*/
tvadd(&median, &good_results[(successes / 2) - 1]);
tvadd(&median, &good_results[successes / 2]);
tvavg(&median, 2);
}
printf("Median time: %d.%06d seconds (%.0f bytes per sec.)\n",
(int) median.tv_sec, (int) median.tv_usec,
(double) size / tv2double(median));
}
}
/*
* Signal handler for timeouts (SIGALRM). This function is called when the
* alarm() value that was set counts down to zero. This indicates that we
* haven't received a response from the server to the last datagram we sent.
* All we do is set a flag and return from the signal handler. The occurrence
* of the signal interrupts the recvfrom() system call (errno = EINTR) above,
* and we then check the timeout_flag flag.
*/
void
to_alarm()
{
/* printf ("DEBUG: timeout handler called\n"); */
timeout_flag = 1; /* set flag for function above */
}
void
interrupted()
{
printf("Interrupted by user\n");
printstats();
exit(1);
}
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