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-rw-r--r--tests/tcpflood.c2108
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diff --git a/tests/tcpflood.c b/tests/tcpflood.c
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--- /dev/null
+++ b/tests/tcpflood.c
@@ -0,0 +1,2108 @@
+/* Opens a large number of tcp connections and sends
+ * messages over them. This is used for stress-testing.
+ *
+ * NOTE: the following part is actually the SPEC (or call it man page).
+ * It's not random comments. So if the code behavior does not match what
+ * is written here, it should be considered a bug.
+ *
+ * Params
+ * -t target address (default 127.0.0.1)
+ * -p target port(s) (default 13514), multiple via port1:port2:port3...
+ * -n number of target ports (all target ports must be given in -p!)
+ * Note -c must also be set to at LEAST the number of -n!
+ * -c number of connections (default 1), use negative number
+ * to set a "soft limit": if tcpflood cannot open the
+ * requested number of connections, gracefully degrade to
+ * whatever number could be opened. This is useful in environments
+ * where system config constraints cannot be overriden (e.g.
+ * vservers, non-admin users, ...)
+ * -m number of messages to send (connection is random)
+ * -i initial message number (optional)
+ * -P PRI to be used for generated messages (default is 167).
+ * Specify the plain number without leading zeros
+ * -d amount of extra data to add to message. If present, the
+ * number itself will be added as third field, and the data
+ * bytes as forth. Add -r to randomize the amount of extra
+ * data included in the range 1..(value of -d).
+ * -r randomize amount of extra data added (-d must be > 0)
+ * -s (silent) do not show progress indicator (never done on non-tty)
+ * -f support for testing dynafiles. If given, include a dynafile ID
+ * in the range 0..(f-1) as the SECOND field, shifting all field values
+ * one field to the right. Zero (default) disables this functionality.
+ * -M the message to be sent. Disables all message format options, as
+ * only that exact same message is sent.
+ * -I read specified input file, do NOT generate own test data. The test
+ * completes when eof is reached.
+ * -B The specified file (-I) is binary. No data processing is done by
+ * tcpflood. If multiple connections are specified, data is read in
+ * chunks and spread across the connections without taking any record
+ * delimiters into account.
+ * -C when input from a file is read, this file is transmitted -C times
+ * (C like cycle, running out of meaningful option switches ;))
+ * -D randomly drop and re-establish connections. Useful for stress-testing
+ * the TCP receiver.
+ * -F USASCII value for frame delimiter (in octet-stuffing mode), default LF
+ * -R number of times the test shall be run (very useful for gathering performance
+ * data and other repetitive things). Default: 1
+ * -S number of seconds to sleep between different runs (-R) Default: 30
+ * -X generate sTats data records. Default: off
+ * -e encode output in CSV (not yet everywhere supported)
+ * for performance data:
+ * each inidividual line has the runtime of one test
+ * the last line has 0 in field 1, followed by numberRuns,TotalRuntime,
+ * Average,min,max
+ * -T transport to use. Currently supported: "udp", "tcp" (default), "tls" (tcp+tls), relp-plain, relp-tls
+ * Note: UDP supports a single target port, only
+ * -u Set RELP TLS Library to gnutls or openssl
+ * -W wait time between sending batches of messages, in microseconds (Default: 0)
+ * -b number of messages within a batch (default: 100,000,000 millions)
+ * -Y use multiple threads, one per connection (which means 1 if one only connection
+ * is configured!)
+ * -y use RFC5424 style test message
+ * -x CA Cert File for verification (TLS Mode / OpenSSL only)
+ * -z private key file for TLS mode
+ * -Z cert (public key) file for TLS mode
+ * -a Authentication Mode for relp-tls
+ * -A do NOT abort if an error occured during sending messages
+ * -E Permitted Peer for relp-tls
+ * -L loglevel to use for GnuTLS troubleshooting (0-off to 10-all, 0 default)
+ * -j format message in json, parameter is JSON cookie
+ * -O Use octate-count framing
+ * -v verbose output, possibly useful for troubleshooting. Most importantly,
+ * this gives insight into librelp actions (if relp is selected as protocol).
+ * -k Custom Configuration string passwed through the TLS library.
+ * Currently only OpenSSL is supported, possible configuration commands and values can be found here:
+ * https://www.openssl.org/docs/man1.0.2/man3/SSL_CONF_cmd.html
+ * Sample: -k"Protocol=ALL,-SSLv2,-SSLv3,-TLSv1,-TLSv1.1"
+ * Works for LIBRELP now as well!
+ *
+ * Part of the testbench for rsyslog.
+ *
+ * Copyright 2009-2019 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of rsyslog.
+ *
+ * Rsyslog is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Rsyslog is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ */
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <strings.h>
+#include <netinet/in.h>
+#include <pthread.h>
+#ifdef ENABLE_RELP
+#include <librelp.h>
+#endif
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <errno.h>
+#ifdef ENABLE_GNUTLS
+# include <gnutls/gnutls.h>
+# if GNUTLS_VERSION_NUMBER <= 0x020b00
+# include <gcrypt.h>
+ GCRY_THREAD_OPTION_PTHREAD_IMPL;
+# endif
+#endif
+#ifdef ENABLE_OPENSSL
+ #include <openssl/ssl.h>
+ #include <openssl/x509v3.h>
+ #include <openssl/err.h>
+ #include <openssl/engine.h>
+
+ /* OpenSSL API differences */
+ #if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ #define RSYSLOG_X509_NAME_oneline(X509CERT) X509_get_subject_name(X509CERT)
+ #define RSYSLOG_BIO_method_name(SSLBIO) BIO_method_name(SSLBIO)
+ #define RSYSLOG_BIO_number_read(SSLBIO) BIO_number_read(SSLBIO)
+ #define RSYSLOG_BIO_number_written(SSLBIO) BIO_number_written(SSLBIO)
+ #else
+ #define RSYSLOG_X509_NAME_oneline(X509CERT) (X509CERT != NULL ? X509CERT->cert_info->subject : NULL)
+ #define RSYSLOG_BIO_method_name(SSLBIO) SSLBIO->method->name
+ #define RSYSLOG_BIO_number_read(SSLBIO) SSLBIO->num
+ #define RSYSLOG_BIO_number_written(SSLBIO) SSLBIO->num
+ #endif
+
+#endif
+
+char *test_rs_strerror_r(int errnum, char *buf, size_t buflen) {
+#ifndef HAVE_STRERROR_R
+ char *pszErr;
+ pszErr = strerror(errnum);
+ snprintf(buf, buflen, "%s", pszErr);
+#else
+# ifdef STRERROR_R_CHAR_P
+ char *p = strerror_r(errnum, buf, buflen);
+ if (p != buf) {
+ strncpy(buf, p, buflen);
+ buf[buflen - 1] = '\0';
+ }
+# else
+ strerror_r(errnum, buf, buflen);
+# endif
+#endif /* #ifdef __hpux */
+ return buf;
+}
+
+#define INVALID_SOCKET -1
+/* Name of input file, must match $IncludeConfig in test suite .conf files */
+#define NETTEST_INPUT_CONF_FILE "nettest.input.conf"
+/* name of input file, must match $IncludeConfig in .conf files */
+
+#define MAX_EXTRADATA_LEN 512*1024
+#define MAX_SENDBUF 2 * MAX_EXTRADATA_LEN
+#define MAX_RCVBUF 16 * 1024 + 1/* TLS RFC 8449: max size of buffer for message reception */
+
+static char *targetIP = "127.0.0.1";
+static char *msgPRI = "167";
+static int targetPort[5] = {13514};
+static int numTargetPorts = 1;
+static int verbose = 0;
+static int dynFileIDs = 0;
+static int extraDataLen = 0; /* amount of extra data to add to message */
+static int useRFC5424Format = 0; /* should the test message be in RFC5424 format? */
+static int bRandomizeExtraData = 0; /* randomize amount of extra data added */
+static int numMsgsToSend = 1; /* number of messages to send */
+static int numConnections = 1; /* number of connections to create */
+static int softLimitConnections = 0; /* soft connection limit, see -c option description */
+static int *sockArray; /* array of sockets to use */
+#ifdef ENABLE_RELP
+static relpClt_t **relpCltArray; /* array of sockets to use */
+#endif
+static int msgNum = 0; /* initial message number to start with */
+static int bShowProgress = 1; /* show progress messages */
+static int bSilent = 0; /* completely silent operation */
+static int bRandConnDrop = 0; /* randomly drop connections? */
+static double dbRandConnDrop = 0.95; /* random drop probability */
+static char *MsgToSend = NULL; /* if non-null, this is the actual message to send */
+static int bBinaryFile = 0; /* is -I file binary */
+static char *dataFile = NULL; /* name of data file, if NULL, generate own data */
+static int numFileIterations = 1;/* how often is file data to be sent? */
+static char frameDelim = '\n'; /* default frame delimiter */
+FILE *dataFP = NULL; /* file pointer for data file, if used */
+static long nConnDrops = 0; /* counter: number of time connection was dropped (-D option) */
+static int numRuns = 1; /* number of times the test shall be run */
+static int sleepBetweenRuns = 30; /* number of seconds to sleep between runs */
+static int bStatsRecords = 0; /* generate stats records */
+static int bCSVoutput = 0; /* generate output in CSV (where applicable) */
+static long long batchsize = 100000000ll;
+static int waittime = 0;
+static int runMultithreaded = 0; /* run tests in multithreaded mode */
+static int numThrds = 1; /* number of threads to use */
+static int abortOnSendFail = 1; /* abort run if sending fails? */
+static char *tlsCAFile = NULL;
+static char *tlsCertFile = NULL;
+static char *tlsKeyFile = NULL;
+static char *relpAuthMode = NULL;
+static char *relpPermittedPeer = NULL;
+#if defined(HAVE_RELPENGINESETTLSLIBBYNAME)
+static char *relpTlsLib = NULL;
+#endif
+
+static int tlsLogLevel = 0;
+static char *jsonCookie = NULL; /* if non-NULL, use JSON format with this cookie */
+static int octateCountFramed = 0;
+static char *customConfig = NULL; /* Stores a string with custom configuration passed through the TLS driver */
+
+#ifdef ENABLE_GNUTLS
+static gnutls_session_t *sessArray; /* array of TLS sessions to use */
+static gnutls_certificate_credentials_t tlscred;
+#endif
+
+#ifdef ENABLE_OPENSSL
+/* Main OpenSSL CTX pointer */
+static SSL_CTX *ctx;
+static SSL **sslArray;
+static struct sockaddr_in dtls_client_addr; /* socket address sender for receiving DTLS data */
+static int udpsockin; /* socket for receiving messages in DTLS mode */
+#endif
+
+/* variables for managing multi-threaded operations */
+int runningThreads; /* number of threads currently running */
+int doRun; /* shall sender thread begin to run? */
+pthread_mutex_t thrdMgmt; /* mutex for controling startup/shutdown */
+pthread_cond_t condStarted;
+pthread_cond_t condDoRun;
+
+/* the following struct provides information for a generator instance (thread) */
+struct instdata {
+ /* lower and upper bounds for the thread in question */
+ unsigned long long lower;
+ unsigned long long numMsgs; /* number of messages to send */
+ unsigned long long numSent; /* number of messages already sent */
+ unsigned idx; /**< index of fd to be used for sending */
+ pthread_t thread; /**< thread processing this instance */
+} *instarray = NULL;
+
+/* the following structure is used to gather performance data */
+struct runstats {
+ unsigned long long totalRuntime;
+ unsigned long minRuntime;
+ unsigned long maxRuntime;
+ int numRuns;
+};
+
+static int udpsockout; /* socket for sending in UDP mode */
+static struct sockaddr_in udpRcvr; /* remote receiver in UDP mode */
+
+static enum { TP_UDP, TP_TCP, TP_TLS, TP_RELP_PLAIN, TP_RELP_TLS, TP_DTLS } transport = TP_TCP;
+
+/* forward definitions */
+static void initTLSSess(int);
+static int sendTLS(int i, char *buf, size_t lenBuf);
+static void closeTLSSess(int __attribute__((unused)) i);
+
+static void initDTLSSess(void);
+static int sendDTLS(char *buf, size_t lenBuf);
+static void closeDTLSSess(void);
+
+#ifdef ENABLE_RELP
+/* RELP subsystem */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-security"
+static void relp_dbgprintf(char __attribute__((unused)) *fmt, ...) {
+ printf(fmt);
+}
+#pragma GCC diagnostic pop
+
+static relpEngine_t *pRelpEngine;
+#define CHKRELP(f) if(f != RELP_RET_OK) { fprintf(stderr, "%s\n", #f); exit(1); }
+
+static void
+onErr(void *pUsr, char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode)
+{
+ fprintf(stderr, "tcpflood: onErr '%s'\n", errmesg);
+}
+
+static void
+onGenericErr(char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode)
+{
+ fprintf(stderr, "tcpflood: onGenericErr '%s'\n", errmesg);
+}
+
+static void
+onAuthErr(void *pUsr, char *authinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode)
+{
+ fprintf(stderr, "tcpflood: onAuthErr '%s' peer '%s'\n", errmesg, authinfo);
+}
+
+static void
+initRELP_PLAIN(void)
+{
+ CHKRELP(relpEngineConstruct(&pRelpEngine));
+ CHKRELP(relpEngineSetDbgprint(pRelpEngine,
+ verbose ? relp_dbgprintf : NULL));
+ CHKRELP(relpEngineSetEnableCmd(pRelpEngine, (unsigned char*)"syslog",
+ eRelpCmdState_Required));
+ /* Error output support */
+ CHKRELP(relpEngineSetOnErr(pRelpEngine, onErr));
+ CHKRELP(relpEngineSetOnGenericErr(pRelpEngine, onGenericErr));
+ CHKRELP(relpEngineSetOnAuthErr(pRelpEngine, onAuthErr));
+
+}
+#endif /* #ifdef ENABLE_RELP */
+
+/* prepare send subsystem for UDP send */
+static int
+setupUDP(void)
+{
+ if((udpsockout = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
+ return 1;
+
+ memset((char *) &udpRcvr, 0, sizeof(udpRcvr));
+ udpRcvr.sin_family = AF_INET;
+ udpRcvr.sin_port = htons(targetPort[0]);
+ if(inet_aton(targetIP, &udpRcvr.sin_addr)==0) {
+ fprintf(stderr, "inet_aton() failed\n");
+ return(1);
+ }
+
+ return 0;
+}
+
+#if defined(ENABLE_OPENSSL)
+static int
+setupDTLS(void)
+{
+ // Setup receiving Socket for DTLS
+ if((udpsockin = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+ return 1;
+
+ memset(&dtls_client_addr, 0, sizeof(dtls_client_addr));
+ dtls_client_addr.sin_family = AF_INET;
+ dtls_client_addr.sin_port = htons(0);
+ dtls_client_addr.sin_addr.s_addr = INADDR_ANY;
+ if (bind(udpsockin, (struct sockaddr*)&dtls_client_addr, sizeof(dtls_client_addr)) < 0) {
+ perror("bind()");
+ fprintf(stderr, "Unable to bind DTLS CLient socket\n");
+ return(1);
+ }
+
+ memset((char *) &udpRcvr, 0, sizeof(udpRcvr));
+ udpRcvr.sin_family = AF_INET;
+ udpRcvr.sin_port = htons(targetPort[0]);
+ if(inet_aton(targetIP, &udpRcvr.sin_addr)==0) {
+ fprintf(stderr, "inet_aton() failed\n");
+ return(1);
+ }
+
+ // Init Socket Connection (Which technically does not connect but prepares socket for DTLS)
+ printf("[DEBUG] Init Session to %s:%d ...\n", targetIP, targetPort[0]);
+ udpsockout = socket(AF_INET, SOCK_DGRAM, 0);
+ // Connect the UDP socket to the server's address
+ if (connect(udpsockout, (const struct sockaddr *) &udpRcvr, sizeof(udpRcvr)) < 0) {
+ perror("connect()");
+ fprintf(stderr, "connect to %s:%d failed\n", targetIP, targetPort[0]);
+ return(1);
+ }
+ sockArray[0] = -1;
+
+ return 0;
+}
+#endif
+
+/* open a single tcp connection
+ */
+int openConn(int *fd, const int connIdx)
+{
+ int sock;
+ struct sockaddr_in addr;
+ int port;
+ int retries = 0;
+ int rnd;
+
+ /* randomize port if required */
+ if(numTargetPorts > 1) {
+ rnd = rand(); /* easier if we need value for debug messages ;) */
+ port = targetPort[(rnd % numTargetPorts)];
+ } else {
+ port = targetPort[0];
+ }
+ if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ #ifdef ENABLE_RELP
+ relpRetVal relp_r;
+ relpClt_t *relpClt;
+ char relpPort[16];
+ snprintf(relpPort, sizeof(relpPort), "%d", port);
+ CHKRELP(relpEngineCltConstruct(pRelpEngine, &relpClt));
+ if(transport == TP_RELP_TLS) {
+ #if defined(HAVE_RELPENGINESETTLSLIBBYNAME)
+ if(relpTlsLib != NULL && relpEngineSetTLSLibByName(pRelpEngine, relpTlsLib) != RELP_RET_OK) {
+ fprintf(stderr, "relpTlsLib not accepted by librelp, using default\n");
+ }
+ #endif
+ if(relpCltEnableTLS(relpClt) != RELP_RET_OK) {
+ fprintf(stderr, "error while enabling TLS for relp\n");
+ exit(1);
+ }
+ if(relpAuthMode != NULL && relpCltSetAuthMode(relpClt, relpAuthMode) != RELP_RET_OK) {
+ fprintf(stderr, "could not set Relp Authentication mode: %s\n", relpAuthMode);
+ exit(1);
+ }
+ if(tlsCAFile != NULL && relpCltSetCACert(relpClt, tlsCAFile) != RELP_RET_OK) {
+ fprintf(stderr, "could not set CA File: %s\n", tlsCAFile);
+ exit(1);
+ }
+ if(tlsCertFile != NULL && relpCltSetOwnCert(relpClt, tlsCertFile) != RELP_RET_OK) {
+ fprintf(stderr, "could not set Cert File: %s\n", tlsCertFile);
+ exit(1);
+ }
+ if(tlsKeyFile != NULL && relpCltSetPrivKey(relpClt, tlsKeyFile) != RELP_RET_OK) {
+ fprintf(stderr, "could not set Key File: %s\n", tlsKeyFile);
+ exit(1);
+ }
+ if(relpPermittedPeer != NULL && relpCltAddPermittedPeer(relpClt, relpPermittedPeer)
+ != RELP_RET_OK) {
+ fprintf(stderr, "could not set Permitted Peer: %s\n", relpPermittedPeer);
+ exit(1);
+ }
+#if defined(HAVE_RELPENGINESETTLSCFGCMD)
+ /* Check for Custom Config string */
+ if(customConfig != NULL && relpCltSetTlsConfigCmd(relpClt, customConfig)
+ != RELP_RET_OK) {
+ fprintf(stderr, "could not set custom tls command: %s\n", customConfig);
+ exit(1);
+ }
+#endif
+ }
+ relpCltArray[connIdx] = relpClt;
+ relp_r = relpCltConnect(relpCltArray[connIdx], 2,
+ (unsigned char*)relpPort, (unsigned char*)targetIP);
+ if(relp_r != RELP_RET_OK) {
+ fprintf(stderr, "relp connect failed with return %d\n", relp_r);
+ return(1);
+ }
+ *fd = 1; /* mimic "all ok" state */
+ #endif
+ } else { /* TCP, with or without TLS */
+ if((sock=socket(AF_INET, SOCK_STREAM, 0))==-1) {
+ perror("\nsocket()");
+ return(1);
+ }
+ memset((char *) &addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ if(inet_aton(targetIP, &addr.sin_addr)==0) {
+ fprintf(stderr, "inet_aton() failed\n");
+ return(1);
+ }
+ while(1) { /* loop broken inside */
+ if(connect(sock, (struct sockaddr*)&addr, sizeof(addr)) == 0) {
+ break;
+ } else {
+ if(retries++ == 50) {
+ perror("connect()");
+ fprintf(stderr, "connect(%d) failed\n", port);
+ return(1);
+ } else {
+ usleep(100000); /* ms = 1000 us! */
+ }
+ }
+ }
+
+ *fd = sock;
+ }
+ return 0;
+}
+
+
+/* open all requested tcp connections
+ * this includes allocating the connection array
+ */
+int openConnections(void)
+{
+ int i;
+ char msgBuf[128];
+ size_t lenMsg;
+
+ if(transport == TP_UDP)
+ return setupUDP();
+
+ if(bShowProgress)
+ if(write(1, " open connections", sizeof(" open connections")-1)){}
+# if defined(ENABLE_OPENSSL)
+ sslArray = calloc(numConnections, sizeof(SSL *));
+# elif defined(ENABLE_GNUTLS)
+ sessArray = calloc(numConnections, sizeof(gnutls_session_t));
+# endif
+ sockArray = calloc(numConnections, sizeof(int));
+
+# if defined(ENABLE_OPENSSL)
+ // Use setupDTLS on DTLS
+ if(transport == TP_DTLS)
+ return setupDTLS();
+# endif
+
+ #ifdef ENABLE_RELP
+ if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS)
+ relpCltArray = calloc(numConnections, sizeof(relpClt_t*));
+ #endif
+ for(i = 0 ; i < numConnections ; ++i) {
+ if(i % 10 == 0) {
+ if(bShowProgress)
+ printf("\r%5.5d", i);
+ }
+ if(openConn(&(sockArray[i]), i) != 0) {
+ printf("error in trying to open connection i=%d\n", i);
+ if(softLimitConnections) {
+ printf("Connection limit is soft, continuing with fewer connections\n");
+ numConnections = i - 1;
+ int close_conn = 10;
+ for(i -= 1 ; close_conn > 0 && i > 1 ; --i, --close_conn) {
+ printf("closing connection %d to make some room\n", i);
+ /* close at least some connections so that
+ * other functionality has a chance to do
+ * at least something.
+ */
+ if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ #ifdef ENABLE_RELP
+ CHKRELP(relpEngineCltDestruct(pRelpEngine,
+ relpCltArray+i));
+ #endif
+ } else { /* TCP and TLS modes */
+ if(transport == TP_TLS)
+ closeTLSSess(i);
+ close(sockArray[i]);
+ }
+ sockArray[i] = -1;
+ }
+ numConnections = i;
+ printf("continuing with %d connections.\n", numConnections);
+ if(numConnections < 1) {
+ fprintf(stderr, "tcpflood could not open at least one "
+ "connection, error-terminating\n");
+ exit(1);
+ }
+ break;
+ }
+ return 1;
+ }
+ if(transport == TP_TLS) {
+ initTLSSess(i);
+ }
+ }
+ if(bShowProgress) {
+ lenMsg = sprintf(msgBuf, "\r%5.5d open connections\n", i);
+ if(write(1, msgBuf, lenMsg)) {}
+ }
+
+ return 0;
+}
+
+
+/* we also close all connections because otherwise we may get very bad
+ * timing for the syslogd - it may not be able to process all incoming
+ * messages fast enough if we immediately shut down.
+ * TODO: it may be an interesting excercise to handle that situation
+ * at the syslogd level, too
+ * rgerhards, 2009-04-14
+ */
+void closeConnections(void)
+{
+ int i;
+ size_t lenMsg;
+ struct linger ling;
+ char msgBuf[128];
+
+ if(transport == TP_UDP) {
+ return;
+ }
+# if defined(ENABLE_OPENSSL)
+ else if(transport == TP_DTLS) {
+ closeDTLSSess();
+ return;
+ }
+# endif
+
+ if(bShowProgress)
+ if(write(1, " close connections", sizeof(" close connections")-1)){}
+ for(i = 0 ; i < numConnections ; ++i) {
+ if(i % 10 == 0 && bShowProgress) {
+ lenMsg = sprintf(msgBuf, "\r%5.5d", i);
+ if(write(1, msgBuf, lenMsg)){}
+ }
+ if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ #ifdef ENABLE_RELP
+ relpRetVal relpr;
+ if(sockArray[i] != -1) {
+ relpr = relpEngineCltDestruct(pRelpEngine, relpCltArray+i);
+ if(relpr != RELP_RET_OK) {
+ fprintf(stderr, "relp error %d on close\n", relpr);
+ }
+ sockArray[i] = -1;
+ }
+ #endif
+ } else { /* TCP and TLS modes */
+ if(sockArray[i] != -1) {
+ /* we try to not overrun the receiver by trying to flush buffers
+ * *during* close(). -- rgerhards, 2010-08-10
+ */
+ ling.l_onoff = 1;
+ ling.l_linger = 1;
+ setsockopt(sockArray[i], SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));
+ if(transport == TP_TLS) {
+ closeTLSSess(i);
+ }
+ close(sockArray[i]);
+ }
+ }
+ }
+ if(bShowProgress) {
+ lenMsg = sprintf(msgBuf, "\r%5.5d close connections\n", i);
+ if(write(1, msgBuf, lenMsg)){}
+ }
+
+}
+
+
+/* generate the message to be sent according to program command line parameters.
+ * this has been moved to its own function as we now have various different ways
+ * of constructing test messages. -- rgerhards, 2010-03-31
+ */
+static void
+genMsg(char *buf, size_t maxBuf, size_t *pLenBuf, struct instdata *inst)
+{
+ int edLen; /* actual extra data length to use */
+ char extraData[MAX_EXTRADATA_LEN + 1];
+ char dynFileIDBuf[128] = "";
+ int done;
+ char payloadLen[32];
+ int payloadStringLen;
+
+ if(dataFP != NULL) {
+ /* get message from file */
+ do {
+ done = 1;
+ *pLenBuf = fread(buf, 1, MAX_EXTRADATA_LEN + 1024, dataFP);
+ if(*pLenBuf == 0) {
+ if(--numFileIterations > 0) {
+ rewind(dataFP);
+ done = 0; /* need new iteration */
+ } else {
+ *pLenBuf = 0;
+ goto finalize_it;
+ }
+ }
+ } while(!done); /* Attention: do..while()! */
+ } else if(jsonCookie != NULL) {
+ if(useRFC5424Format) {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>1 2003-03-01T01:00:00.000Z mymachine.example.com "
+ "tcpflood - tag [tcpflood@32473 MSGNUM"
+ "=\"%8.8d\"] %s{\"msgnum\":%d}%c", msgPRI, msgNum,
+ jsonCookie, msgNum, frameDelim);
+ } else {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>Mar 1 01:00:00 172.20.245.8 tag %s{\"msgnum\":%d}%c",
+ msgPRI, jsonCookie, msgNum, frameDelim);
+ }
+ } else if(MsgToSend == NULL) {
+ if(dynFileIDs > 0) {
+ snprintf(dynFileIDBuf, sizeof(dynFileIDBuf), "%d:", rand() % dynFileIDs);
+ }
+ if(extraDataLen == 0) {
+ if(useRFC5424Format) {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>1 2003-03-01T01:00:00.000Z "
+ "mymachine.example.com tcpflood - tag [tcpflood@32473 "
+ "MSGNUM=\"%8.8d\"] msgnum:%s%8.8d:%c",
+ msgPRI, msgNum, dynFileIDBuf, msgNum, frameDelim);
+ } else {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>Mar 1 01:00:00 172.20.245.8 tag "
+ "msgnum:%s%8.8d:%c", msgPRI, dynFileIDBuf, msgNum, frameDelim);
+ }
+ } else {
+ if(bRandomizeExtraData)
+ edLen = ((unsigned long) rand() + extraDataLen) % extraDataLen + 1;
+ else
+ edLen = extraDataLen;
+ memset(extraData, 'X', edLen);
+ extraData[edLen] = '\0';
+ if(useRFC5424Format) {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>1 2003-03-01T01:00:00.000Z "
+ "mymachine.example.com tcpflood - tag [tcpflood@32473 "
+ "MSGNUM=\"%8.8d\"] msgnum:%s%8.8d:%c",
+ msgPRI, msgNum, dynFileIDBuf, msgNum, frameDelim);
+ } else {
+ *pLenBuf = snprintf(buf, maxBuf, "<%s>Mar 1 01:00:00 172.20.245.8 tag msgnum"
+ ":%s%8.8d:%d:%s%c", msgPRI, dynFileIDBuf, msgNum, edLen,
+ extraData, frameDelim);
+ }
+ }
+ } else {
+ /* use fixed message format from command line */
+ *pLenBuf = snprintf(buf, maxBuf, "%s%c", MsgToSend, frameDelim);
+ }
+ if (octateCountFramed == 1) {
+ snprintf(payloadLen, sizeof(payloadLen), "%zd ", *pLenBuf);
+ payloadStringLen = strlen(payloadLen);
+ memmove(buf + payloadStringLen, buf, *pLenBuf);
+ memcpy(buf, payloadLen, payloadStringLen);
+ *pLenBuf += payloadStringLen;
+ }
+ ++inst->numSent;
+
+finalize_it: /*EMPTY to keep the compiler happy */;
+}
+
+
+static int
+sendPlainTCP(const int socknum, const char *const buf, const size_t lenBuf, int *const ret_errno)
+{
+ size_t lenSent;
+ int r;
+
+ lenSent = 0;
+ while(lenSent != lenBuf) {
+ r = send(sockArray[socknum], buf + lenSent, lenBuf - lenSent, 0);
+ if(r > 0) {
+ lenSent += r;
+ } else {
+ *ret_errno = errno;
+ goto finalize_it;
+ }
+ }
+
+finalize_it:
+ return lenSent;
+}
+
+
+/* send messages to the tcp connections we keep open. We use
+ * a very basic format that helps identify the message
+ * (via msgnum:<number>: e.g. msgnum:00000001:). This format is suitable
+ * for extracton to field-based properties.
+ * The first numConnection messages are sent sequentially, as are the
+ * last. All messages in between are sent over random connections.
+ * Note that message numbers start at 0.
+ */
+int sendMessages(struct instdata *inst)
+{
+ unsigned i = 0;
+ int socknum;
+ size_t lenBuf;
+ size_t lenSend = 0;
+ char *statusText = "";
+ char buf[MAX_EXTRADATA_LEN + 1024];
+ char sendBuf[MAX_SENDBUF];
+ int offsSendBuf = 0;
+ char errStr[1024];
+ int error_number = 0;
+ unsigned show_progress_interval = 100;
+
+ if(!bSilent) {
+ if(dataFile == NULL) {
+ printf("Sending %llu messages.\n", inst->numMsgs);
+ statusText = "messages";
+ if ((inst->numMsgs / 100) > show_progress_interval) {
+ show_progress_interval = inst->numMsgs / 100;
+ }
+ } else {
+ printf("Sending file '%s' %d times.\n", dataFile,
+ numFileIterations);
+ statusText = "kb";
+ }
+ }
+ if(bShowProgress)
+ printf("\r%8.8d %s sent", 0, statusText);
+ while(i < inst->numMsgs) {
+ if(runMultithreaded) {
+ socknum = inst->idx;
+ } else {
+ if((int) i < numConnections)
+ socknum = i;
+ else if(i >= inst->numMsgs - numConnections) {
+ socknum = i - (inst->numMsgs - numConnections);
+ } else {
+ int rnd = rand();
+ socknum = rnd % numConnections;
+ }
+ }
+ genMsg(buf, sizeof(buf), &lenBuf, inst); /* generate the message to send according to params */
+ if(lenBuf == 0)
+ break; /* terminate when no message could be generated */
+ if(transport == TP_TCP) {
+ if(sockArray[socknum] == -1) {
+ /* connection was dropped, need to re-establish */
+ if(openConn(&(sockArray[socknum]), socknum) != 0) {
+ printf("error in trying to re-open connection %d\n", socknum);
+ exit(1);
+ }
+ }
+ lenSend = sendPlainTCP(socknum, buf, lenBuf, &error_number);
+ } else if(transport == TP_UDP) {
+ lenSend = sendto(udpsockout, buf, lenBuf, 0, &udpRcvr, sizeof(udpRcvr));
+ error_number = errno;
+ } else if(transport == TP_TLS) {
+ if(sockArray[socknum] == -1) {
+ /* connection was dropped, need to re-establish */
+ if(openConn(&(sockArray[socknum]), socknum) != 0) {
+ printf("error in trying to re-open connection %d\n", socknum);
+ exit(1);
+ }
+ initTLSSess(socknum);
+ }
+ if(offsSendBuf + lenBuf < MAX_SENDBUF) {
+ memcpy(sendBuf+offsSendBuf, buf, lenBuf);
+ offsSendBuf += lenBuf;
+ lenSend = lenBuf; /* simulate "good" call */
+ } else {
+ lenSend = sendTLS(socknum, sendBuf, offsSendBuf);
+ lenSend = (lenSend == offsSendBuf) ? lenBuf : -1;
+ memcpy(sendBuf, buf, lenBuf);
+ offsSendBuf = lenBuf;
+ }
+# if defined(ENABLE_OPENSSL)
+ } else if(transport == TP_DTLS) {
+ if(sockArray[0] == -1) {
+ // Init DTLS Session (Bind local listener)
+ initDTLSSess();
+ }
+ lenSend = sendDTLS(buf, lenBuf);
+# endif
+ } else if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ #ifdef ENABLE_RELP
+ relpRetVal relp_ret;
+ if(sockArray[socknum] == -1) {
+ /* connection was dropped, need to re-establish */
+ if(openConn(&(sockArray[socknum]), socknum) != 0) {
+ printf("error in trying to re-open connection %d\n", socknum);
+ exit(1);
+ }
+ }
+ relp_ret = relpCltSendSyslog(relpCltArray[socknum],
+ (unsigned char*)buf, lenBuf);
+ if (relp_ret == RELP_RET_OK) {
+ lenSend = lenBuf; /* mimic ok */
+ } else {
+ lenSend = 0; /* mimic fail */
+ printf("\nrelpCltSendSyslog() failed with relp error code %d\n",
+ relp_ret);
+ }
+ #endif
+ }
+ if(lenSend != lenBuf) {
+ printf("\r%5.5u\n", i);
+ fflush(stdout);
+ test_rs_strerror_r(error_number, errStr, sizeof(errStr));
+ if(lenSend == 0) {
+ printf("tcpflood: socket %d, index %u, msgNum %lld CLOSED REMOTELY\n",
+ sockArray[socknum], i, inst->numSent);
+ } else {
+ printf("tcpflood: send() failed \"%s\" at socket %d, index %u, "
+ "msgNum %lld, lenSend %zd, lenBuf %zd\n",
+ errStr, sockArray[socknum], i, inst->numSent, lenSend,
+ lenBuf);
+ }
+ fflush(stderr);
+
+ if(abortOnSendFail) {
+ printf("tcpflood terminates due to send failure\n");
+ return(1);
+ }
+ }
+ if(i % show_progress_interval == 0) {
+ if(bShowProgress)
+ printf("\r%8.8u", i);
+ }
+ if(!runMultithreaded && bRandConnDrop) {
+ /* if we need to randomly drop connections, see if we
+ * are a victim
+ */
+ if(rand() > (int) (RAND_MAX * dbRandConnDrop)) {
+#if 1
+ if(transport == TP_TLS && offsSendBuf != 0) {
+ /* send remaining buffer */
+ lenSend = sendTLS(socknum, sendBuf, offsSendBuf);
+ if(lenSend != offsSendBuf) {
+ fprintf(stderr, "tcpflood: error in send function causes potential "
+ "data loss lenSend %zd, offsSendBuf %d\n",
+ lenSend, offsSendBuf);
+ }
+ offsSendBuf = 0;
+ }
+#endif
+ ++nConnDrops;
+ close(sockArray[socknum]);
+ sockArray[socknum] = -1;
+ }
+ }
+ if(inst->numSent % batchsize == 0) {
+ usleep(waittime);
+ }
+ ++msgNum;
+ ++i;
+ }
+ if(transport == TP_TLS && offsSendBuf != 0) {
+ /* send remaining buffer */
+ lenSend = sendTLS(socknum, sendBuf, offsSendBuf);
+ }
+ if(!bSilent)
+ printf("\r%8.8u %s sent\n", i, statusText);
+
+ return 0;
+}
+
+
+/* this is the thread that starts a generator
+ */
+static void *
+thrdStarter(void *arg)
+{
+ struct instdata *inst = (struct instdata*) arg;
+ pthread_mutex_lock(&thrdMgmt);
+ runningThreads++;
+ pthread_cond_signal(&condStarted);
+ while(doRun == 0) {
+ pthread_cond_wait(&condDoRun, &thrdMgmt);
+ }
+ pthread_mutex_unlock(&thrdMgmt);
+ if(sendMessages(inst) != 0) {
+ printf("error sending messages\n");
+ }
+ return NULL;
+}
+
+
+/* This function initializes the actual traffic generators. The function sets up all required
+ * parameter blocks and starts threads. It returns when all threads are ready to run
+ * and the main task must just enable them.
+ */
+static void
+prepareGenerators()
+{
+ int i;
+ long long msgsThrd;
+ long long starting = 0;
+ pthread_attr_t thrd_attr;
+
+ if(runMultithreaded) {
+ bSilent = 1;
+ numThrds = numConnections;
+ } else {
+ numThrds = 1;
+ }
+
+ pthread_attr_init(&thrd_attr);
+ pthread_attr_setstacksize(&thrd_attr, 4096*1024);
+
+ runningThreads = 0;
+ doRun = 0;
+ pthread_mutex_init(&thrdMgmt, NULL);
+ pthread_cond_init(&condStarted, NULL);
+ pthread_cond_init(&condDoRun, NULL);
+
+ if(instarray != NULL) {
+ free(instarray);
+ }
+ instarray = calloc(numThrds, sizeof(struct instdata));
+ msgsThrd = numMsgsToSend / numThrds;
+
+ for(i = 0 ; i < numThrds ; ++i) {
+ instarray[i].lower = starting;
+ instarray[i].numMsgs = msgsThrd;
+ instarray[i].numSent = 0;
+ instarray[i].idx = i;
+ pthread_create(&(instarray[i].thread), &thrd_attr, thrdStarter, instarray + i);
+ /*printf("started thread %x\n", (unsigned) instarray[i].thread);*/
+ starting += msgsThrd;
+ }
+}
+
+/* Let all generators run. Threads must have been started. Here we wait until
+ * all threads are initialized and then broadcast that they can begin to run.
+ */
+static void
+runGenerators()
+{
+ pthread_mutex_lock(&thrdMgmt);
+ while(runningThreads != numThrds){
+ pthread_cond_wait(&condStarted, &thrdMgmt);
+ }
+ doRun = 1;
+ pthread_cond_broadcast(&condDoRun);
+ pthread_mutex_unlock(&thrdMgmt);
+}
+
+
+/* Wait for all traffic generators to stop.
+ */
+static void
+waitGenerators()
+{
+ int i;
+ for(i = 0 ; i < numThrds ; ++i) {
+ pthread_join(instarray[i].thread, NULL);
+ /*printf("thread %x stopped\n", (unsigned) instarray[i].thread);*/
+ }
+ pthread_mutex_destroy(&thrdMgmt);
+ pthread_cond_destroy(&condStarted);
+ pthread_cond_destroy(&condDoRun);
+}
+
+/* functions related to computing statistics on the runtime of a test. This is
+ * a separate function primarily not to mess up the test driver.
+ * rgerhards, 2010-12-08
+ */
+static void
+endTiming(struct timeval *tvStart, struct runstats *stats)
+{
+ long sec, usec;
+ unsigned long runtime;
+ struct timeval tvEnd;
+
+ gettimeofday(&tvEnd, NULL);
+ if(tvStart->tv_usec > tvEnd.tv_usec) {
+ tvEnd.tv_sec--;
+ tvEnd.tv_usec += 1000000;
+ }
+
+ sec = tvEnd.tv_sec - tvStart->tv_sec;
+ usec = tvEnd.tv_usec - tvStart->tv_usec;
+
+ runtime = sec * 1000 + (usec / 1000);
+ stats->totalRuntime += runtime;
+ if(runtime < stats->minRuntime)
+ stats->minRuntime = runtime;
+ if(runtime > stats->maxRuntime)
+ stats->maxRuntime = runtime;
+
+ if(!bSilent || bStatsRecords) {
+ if(bCSVoutput) {
+ printf("%lu.%3.3ld\n", runtime / 1000, runtime % 1000);
+ } else {
+ printf("runtime: %lu.%3.3ld\n", runtime / 1000, runtime % 1000);
+ }
+ }
+}
+
+
+/* generate stats summary record at end of run
+ */
+static void
+genStats(struct runstats *stats)
+{
+ long unsigned avg;
+ avg = stats->totalRuntime / stats->numRuns;
+
+ if(bCSVoutput) {
+ printf("#numRuns,TotalRuntime,AvgRuntime,MinRuntime,MaxRuntime\n");
+ printf("%d,%llu.%3.3d,%lu.%3.3lu,%lu.%3.3lu,%lu.%3.3lu\n",
+ stats->numRuns,
+ stats->totalRuntime / 1000, (int) stats->totalRuntime % 1000,
+ avg / 1000, avg % 1000,
+ stats->minRuntime / 1000, stats->minRuntime % 1000,
+ stats->maxRuntime / 1000, stats->maxRuntime % 1000);
+ } else {
+ printf("Runs: %d\n", stats->numRuns);
+ printf("Runtime:\n");
+ printf(" total: %llu.%3.3d\n", stats->totalRuntime / 1000,
+ (int) stats->totalRuntime % 1000);
+ printf(" avg: %lu.%3.3lu\n", avg / 1000, avg % 1000);
+ printf(" min: %lu.%3.3lu\n", stats->minRuntime / 1000, stats->minRuntime % 1000);
+ printf(" max: %lu.%3.3lu\n", stats->maxRuntime / 1000, stats->maxRuntime % 1000);
+ printf("All times are wallclock time.\n");
+ }
+}
+
+
+/* Run the actual test. This function handles various meta-parameters, like
+ * a specified number of iterations, performance measurement and so on...
+ * rgerhards, 2010-12-08
+ */
+static int
+runTests(void)
+{
+ struct timeval tvStart;
+ struct runstats stats;
+ int run;
+
+ stats.totalRuntime = 0;
+ stats.minRuntime = 0xffffffffllu;
+ stats.maxRuntime = 0;
+ stats.numRuns = numRuns;
+ run = 1;
+ while(1) { /* loop broken inside */
+ if(!bSilent)
+ printf("starting run %d\n", run);
+ prepareGenerators();
+ gettimeofday(&tvStart, NULL);
+ runGenerators();
+ waitGenerators();
+ endTiming(&tvStart, &stats);
+ if(run == numRuns)
+ break;
+ if(!bSilent)
+ printf("sleeping %d seconds before next run\n", sleepBetweenRuns);
+ sleep(sleepBetweenRuns);
+ ++run;
+ }
+
+ if(bStatsRecords) {
+ genStats(&stats);
+ }
+
+ return 0;
+}
+
+# if defined(ENABLE_OPENSSL)
+/* OpenSSL implementation of TLS funtions.
+ * alorbach, 2018-06-11
+ */
+
+long BIO_debug_callback(BIO *bio, int cmd, const char __attribute__((unused)) *argp,
+ int argi, long __attribute__((unused)) argl, long ret)
+{
+ long r = 1;
+
+ if (BIO_CB_RETURN & cmd)
+ r = ret;
+
+ printf("tcpflood: openssl debugmsg: BIO[%p]: ", (void *)bio);
+
+ switch (cmd) {
+ case BIO_CB_FREE:
+ printf("Free - %s\n", RSYSLOG_BIO_method_name(bio));
+ break;
+/* Disabled due API changes for OpenSSL 1.1.0+ */
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+ case BIO_CB_READ:
+ if (bio->method->type & BIO_TYPE_DESCRIPTOR)
+ printf("read(%d,%lu) - %s fd=%d\n",
+ RSYSLOG_BIO_number_read(bio), (unsigned long)argi,
+ RSYSLOG_BIO_method_name(bio), RSYSLOG_BIO_number_read(bio));
+ else
+ printf("read(%d,%lu) - %s\n",
+ RSYSLOG_BIO_number_read(bio), (unsigned long)argi, RSYSLOG_BIO_method_name(bio));
+ break;
+ case BIO_CB_WRITE:
+ if (bio->method->type & BIO_TYPE_DESCRIPTOR)
+ printf("write(%d,%lu) - %s fd=%d\n",
+ RSYSLOG_BIO_number_written(bio), (unsigned long)argi,
+ RSYSLOG_BIO_method_name(bio), RSYSLOG_BIO_number_written(bio));
+ else
+ printf("write(%d,%lu) - %s\n",
+ RSYSLOG_BIO_number_written(bio), (unsigned long)argi, RSYSLOG_BIO_method_name(bio));
+ break;
+#else
+ case BIO_CB_READ:
+ printf("read %s\n", RSYSLOG_BIO_method_name(bio));
+ break;
+ case BIO_CB_WRITE:
+ printf("write %s\n", RSYSLOG_BIO_method_name(bio));
+ break;
+#endif
+ case BIO_CB_PUTS:
+ printf("puts() - %s\n", RSYSLOG_BIO_method_name(bio));
+ break;
+ case BIO_CB_GETS:
+ printf("gets(%lu) - %s\n", (unsigned long)argi,
+ RSYSLOG_BIO_method_name(bio));
+ break;
+ case BIO_CB_CTRL:
+ printf("ctrl(%lu) - %s\n", (unsigned long)argi,
+ RSYSLOG_BIO_method_name(bio));
+ break;
+ case BIO_CB_RETURN | BIO_CB_READ:
+ printf("read return %ld\n", ret);
+ break;
+ case BIO_CB_RETURN | BIO_CB_WRITE:
+ printf("write return %ld\n", ret);
+ break;
+ case BIO_CB_RETURN | BIO_CB_GETS:
+ printf("gets return %ld\n", ret);
+ break;
+ case BIO_CB_RETURN | BIO_CB_PUTS:
+ printf("puts return %ld\n", ret);
+ break;
+ case BIO_CB_RETURN | BIO_CB_CTRL:
+ printf("ctrl return %ld\n", ret);
+ break;
+ default:
+ printf("bio callback - unknown type (%d)\n", cmd);
+ break;
+ }
+
+ return (r);
+}
+
+void osslLastSSLErrorMsg(int ret, SSL *ssl, const char* pszCallSource)
+{
+ unsigned long un_error = 0;
+ char psz[256];
+
+ if (ssl == NULL) {
+ /* Output Error Info*/
+ printf("tcpflood: Error in '%s' with ret=%d\n", pszCallSource, ret);
+ } else {
+ long iMyRet = SSL_get_error(ssl, ret);
+
+ /* Check which kind of error we have */
+ printf("tcpflood: openssl error '%s' with error code=%ld\n", pszCallSource, iMyRet);
+ if(iMyRet == SSL_ERROR_SYSCALL){
+ iMyRet = ERR_get_error();
+ if(ret == 0) {
+ iMyRet = SSL_get_error(ssl, iMyRet);
+ if(iMyRet == 0) {
+ *psz = '\0';
+ } else {
+ ERR_error_string_n(iMyRet, psz, 256);
+ }
+ printf("tcpflood: Errno %d, SysErr: %s\n", errno, psz);
+ }
+ } else {
+ printf("tcpflood: Unknown SSL Error in '%s' (%d), SSL_get_error: %ld\n",
+ pszCallSource, ret, iMyRet);
+ }
+ }
+
+ /* Loop through errors */
+ while ((un_error = ERR_get_error()) > 0){
+ ERR_error_string_n(un_error, psz, 256);
+ printf("tcpflood: %s Errorstack: %s\n", pszCallSource, psz);
+ }
+}
+
+int verify_callback(int status, X509_STORE_CTX *store)
+{
+ char szdbgdata1[256];
+ char szdbgdata2[256];
+
+ if(status == 0) {
+ printf("tcpflood: verify_callback certificate validation failed!\n");
+
+ X509 *cert = X509_STORE_CTX_get_current_cert(store);
+ int depth = X509_STORE_CTX_get_error_depth(store);
+ int err = X509_STORE_CTX_get_error(store);
+ X509_NAME_oneline(X509_get_issuer_name(cert), szdbgdata1, sizeof(szdbgdata1));
+ X509_NAME_oneline(RSYSLOG_X509_NAME_oneline(cert), szdbgdata2, sizeof(szdbgdata2));
+
+ /* Log Warning only on EXPIRED */
+ if (err == X509_V_OK || err == X509_V_ERR_CERT_HAS_EXPIRED) {
+ printf(
+ "tcpflood: Certificate warning at depth: %d \n\t"
+ "issuer = %s\n\t"
+ "subject = %s\n\t"
+ "err %d:%s\n",
+ depth, szdbgdata1, szdbgdata2, err, X509_verify_cert_error_string(err));
+
+ /* Set Status to OK*/
+ status = 1;
+ } else {
+ printf(
+ "tcpflood: Certificate error at depth: %d \n\t"
+ "issuer = %s\n\t"
+ "subject = %s\n\t"
+ "err %d:%s\n",
+ depth, szdbgdata1, szdbgdata2, err, X509_verify_cert_error_string(err));
+ exit(1);
+ }
+ }
+ return status;
+}
+
+
+/* global init OpenSSL
+ */
+static void
+initTLS(const SSL_METHOD *method)
+{
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+ /* Setup OpenSSL library < 1.1.0 */
+ if( !SSL_library_init()) {
+#else
+ /* Setup OpenSSL library >= 1.1.0 with system default settings */
+ if( OPENSSL_init_ssl(0, NULL) == 0) {
+#endif
+ printf("tcpflood: error openSSL initialization failed!\n");
+ exit(1);
+ }
+
+ /* Load readable error strings */
+ SSL_load_error_strings();
+ OpenSSL_add_ssl_algorithms();
+ ERR_load_BIO_strings();
+ ERR_load_crypto_strings();
+
+ // Create OpenSSL Context
+ ctx = SSL_CTX_new(method);
+
+ if(tlsCAFile != NULL && SSL_CTX_load_verify_locations(ctx, tlsCAFile, NULL) != 1) {
+ printf("tcpflood: Error, Failed loading CA certificate"
+ " Is the file at the right path? And do we have the permissions?");
+ exit(1);
+ }
+ SSL_CTX_set_ecdh_auto(ctx, 1);
+ if(SSL_CTX_use_certificate_chain_file(ctx, tlsCertFile) != 1) {
+ printf("tcpflood: error cert file could not be accessed -- have you mixed up key and certificate?\n");
+ printf("If in doubt, try swapping the files in -z/-Z\n");
+ printf("Certifcate is: '%s'\n", tlsCertFile);
+ printf("Key is: '%s'\n", tlsKeyFile);
+ exit(1);
+ }
+ if(SSL_CTX_use_PrivateKey_file(ctx, tlsKeyFile, SSL_FILETYPE_PEM) != 1) {
+ printf("tcpflood: error key file could not be accessed -- have you mixed up key and certificate?\n");
+ printf("If in doubt, try swapping the files in -z/-Z\n");
+ printf("Certifcate is: '%s'\n", tlsCertFile);
+ printf("Key is: '%s'\n", tlsKeyFile);
+ exit(1);
+ }
+
+ /* Set CTX Options */
+ SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2); /* Disable insecure SSLv2 Protocol */
+ SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3); /* Disable insecure SSLv3 Protocol */
+ SSL_CTX_sess_set_cache_size(ctx,1024);
+
+ /* Check for Custom Config string */
+ if (customConfig != NULL){
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
+ char *pCurrentPos;
+ char *pNextPos;
+ char *pszCmd;
+ char *pszValue;
+ int iConfErr;
+
+ printf("tcpflood: custom config set to '%s'\n", customConfig);
+
+ /* Set working pointer */
+ pCurrentPos = (char*) customConfig;
+ if (strlen(pCurrentPos) > 0) {
+ pNextPos = index(pCurrentPos, '=');
+ if (pNextPos != NULL) {
+ pszCmd = strndup(pCurrentPos, pNextPos-pCurrentPos);
+ pszValue = strdup(++pNextPos);
+
+ // Create CTX Config Helper
+ SSL_CONF_CTX *cctx;
+ cctx = SSL_CONF_CTX_new();
+ SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
+ SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_FILE);
+ SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SHOW_ERRORS);
+ SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
+
+ /* Add SSL Conf Command */
+ iConfErr = SSL_CONF_cmd(cctx, pszCmd, pszValue);
+ if (iConfErr > 0) {
+ printf("tcpflood: Successfully added Command %s:%s\n",
+ pszCmd, pszValue);
+ }
+ else {
+ printf("tcpflood: error, adding Command: %s:%s "
+ "in SSL_CONF_cmd with error '%d'\n",
+ pszCmd, pszValue, iConfErr);
+ osslLastSSLErrorMsg(0, NULL, "initTLS");
+ }
+
+ /* Finalize SSL Conf */
+ iConfErr = SSL_CONF_CTX_finish(cctx);
+ if (!iConfErr) {
+ printf("tcpflood: error, setting openssl command parameters: %s\n",
+ customConfig);
+ }
+
+ free(pszCmd);
+ free(pszValue);
+ } else {
+ printf("tcpflood: error, invalid value for -k: %s\n", customConfig);
+ }
+ } else {
+ printf("tcpflood: error, invalid value for -k: %s\n", customConfig);
+ }
+#else
+ printf("tcpflood: TLS library does not support SSL_CONF_cmd API (maybe it is too old?).");
+#endif
+ }
+
+
+ /* DO ONLY SUPPORT DEFAULT CIPHERS YET
+ * SSL_CTX_set_cipher_list(ctx,"ALL"); Support all ciphers */
+
+/* // Create Extra Length DH!
+ pDH = DH_new();
+ if ( !DH_generate_parameters_ex(pDH, 768, DH_GENERATOR_2, NULL) )
+ {
+ if(pDH)
+ DH_free(pDH);
+
+ fprintf(stderr, "Failed to generated dynamic DH\n");
+ exit(1);
+ }
+ else
+ {
+ int iErrCheck = 0;
+ if ( !DH_check( pDH, &iErrCheck) )
+ {
+ fprintf(stderr, "Failed to generated dynamic DH - iErrCheck=%d\n", iErrCheck);
+ exit(1);
+ }
+ }
+*/
+ /* Set default VERIFY Options for OpenSSL CTX - and CALLBACK */
+ SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, verify_callback);
+
+ SSL_CTX_set_timeout(ctx, 30); /* Default Session Timeout, TODO: Make configureable */
+ SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
+}
+
+static void
+exitTLS(void)
+{
+ SSL_CTX_free(ctx);
+ ENGINE_cleanup();
+ ERR_free_strings();
+ EVP_cleanup();
+ CRYPTO_cleanup_all_ex_data();
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
+static void
+initTLSSess(int i)
+{
+ int res;
+ BIO *bio_client;
+ SSL* pNewSsl = SSL_new(ctx);
+
+ sslArray[i] = pNewSsl;
+
+ if(!sslArray[i]) {
+ osslLastSSLErrorMsg(0, sslArray[i], "initTLSSess1");
+ }
+
+ SSL_set_verify(sslArray[i], SSL_VERIFY_NONE, verify_callback);
+
+ /* Create BIO from socket array! */
+ bio_client = BIO_new_socket(sockArray[i], BIO_CLOSE /*BIO_NOCLOSE*/);
+ if (bio_client == NULL) {
+ osslLastSSLErrorMsg(0, sslArray[i], "initTLSSess2");
+ exit(1);
+ } else {
+ // printf("initTLSSess: Init client BIO[%p] done\n", (void *)bio_client);
+ }
+
+ if(tlsLogLevel > 0) {
+ /* Set debug Callback for client BIO as well! */
+ BIO_set_callback(bio_client, BIO_debug_callback);
+ }
+
+ /* Blocking socket */
+ BIO_set_nbio( bio_client, 0 );
+ SSL_set_bio(sslArray[i], bio_client, bio_client);
+ SSL_set_connect_state(sslArray[i]); /*sets ssl to work in client mode.*/
+
+ /* Perform the TLS handshake */
+ if((res = SSL_do_handshake(sslArray[i])) <= 0) {
+ osslLastSSLErrorMsg(res, sslArray[i], "initTLSSess3");
+ exit(1);
+ }
+}
+#pragma GCC diagnostic pop
+
+
+static int
+sendTLS(int i, char *buf, size_t lenBuf)
+{
+ size_t lenSent;
+ int r, err;
+
+ lenSent = 0;
+ while(lenSent != lenBuf) {
+ r = SSL_write(sslArray[i], buf + lenSent, lenBuf - lenSent);
+ if(r > 0) {
+ lenSent += r;
+ } else {
+ err = SSL_get_error(sslArray[i], r);
+ if(err != SSL_ERROR_ZERO_RETURN && err != SSL_ERROR_WANT_READ &&
+ err != SSL_ERROR_WANT_WRITE) {
+ /*SSL_ERROR_ZERO_RETURN: TLS connection has been closed. This
+ * result code is returned only if a closure alert has occurred
+ * in the protocol, i.e. if the connection has been closed cleanly.
+ *SSL_ERROR_WANT_READ/WRITE: The operation did not complete, try
+ * again later. */
+ printf("Error while sending data: [%d] %s", err, ERR_error_string(err, NULL));
+ printf("Error is: %s", ERR_reason_error_string(err));
+ } else {
+ /* Check for SSL Shutdown */
+ if (SSL_get_shutdown(sslArray[i]) == SSL_RECEIVED_SHUTDOWN) {
+ printf("received SSL_RECEIVED_SHUTDOWN!\n");
+ } else {
+ printf("[ERROR] while sending data: [%d] %s", err, ERR_error_string(err, NULL));
+ printf("[ERROR] Reason: %s", ERR_reason_error_string(err));
+ }
+ }
+ exit(1);
+ }
+ }
+
+ return lenSent;
+}
+
+static void
+closeTLSSess(int i)
+{
+ int r;
+ r = SSL_shutdown(sslArray[i]);
+ if (r <= 0){
+ /* Shutdown not finished, call SSL_read to do a bidirectional shutdown, see doc for more:
+ * https://www.openssl.org/docs/man1.1.1/man3/SSL_shutdown.html
+ */
+ char rcvBuf[MAX_RCVBUF];
+ SSL_read(sslArray[i], rcvBuf, MAX_RCVBUF);
+
+ }
+ SSL_free(sslArray[i]);
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
+static void
+initDTLSSess()
+{
+ int res;
+ BIO *bio_client;
+
+ // Create new SSL
+ SSL* pNewSsl = SSL_new(ctx);
+
+ // set to array variables
+ sslArray[0] = pNewSsl;
+ sockArray[0] = udpsockout;
+
+ if(!sslArray[0]) {
+ fprintf(stderr, "Unable to create SSL\n");
+ osslLastSSLErrorMsg(0, sslArray[0], "initDTLSSess1");
+ exit(1);
+ }
+
+ SSL_set_verify(sslArray[0], SSL_VERIFY_NONE, verify_callback);
+
+ /* Create BIO from socket array! */
+ bio_client = BIO_new_dgram(udpsockout, BIO_NOCLOSE);
+ if (!bio_client) {
+ fprintf(stderr, "Unable to create BIO\n");
+ osslLastSSLErrorMsg(0, sslArray[0], "initDTLSSess2");
+ exit(1);
+ }
+ BIO_ctrl(bio_client, BIO_CTRL_DGRAM_SET_CONNECTED, 0, &dtls_client_addr);
+ SSL_set_bio(sslArray[0], bio_client, bio_client);
+
+
+ if(tlsLogLevel > 0) {
+ /* Set debug Callback for client BIO as well! */
+ BIO_set_callback(bio_client, BIO_debug_callback);
+ }
+
+ /* Blocking socket */
+// BIO_set_nbio( bio_client, 0 );
+// SSL_set_bio(sslArray[0], bio_client, bio_client);
+// SSL_set_connect_state(sslArray[0]); /*sets ssl to work in client mode.*/
+
+ printf("[DEBUG] Starting DTLS session ...\n");
+ /* Perform handshake */
+ if (SSL_connect(sslArray[0]) <= 0) {
+ fprintf(stderr, "SSL_connect failed\n");
+ osslLastSSLErrorMsg(0, sslArray[0], "initDTLSSess3");
+ exit(1);
+ }
+
+ // Print Cipher info
+ const SSL_CIPHER *cipher = SSL_get_current_cipher(sslArray[0]);
+ if(tlsLogLevel > 0) {
+ printf("[DEBUG] Cipher used: %s\n", SSL_CIPHER_get_name(cipher));
+ }
+
+ // Print Peer Certificate info
+ if(tlsLogLevel > 0) {
+ X509 *cert = SSL_get_peer_certificate(sslArray[0]);
+ if (cert != NULL) {
+ char *line;
+ line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0);
+ printf("[DEBUG] Subject: %s\n", line);
+ OPENSSL_free(line);
+
+ line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0);
+ printf("[DEBUG] Issuer: %s\n", line);
+ OPENSSL_free(line);
+ X509_free(cert);
+ } else {
+ printf("[DEBUG] No certificates.\n");
+ }
+ }
+
+ /* Set and activate timeouts */
+ struct timeval timeout;
+ timeout.tv_sec = 3;
+ timeout.tv_usec = 0;
+ BIO_ctrl(bio_client, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
+}
+#pragma GCC diagnostic pop
+
+
+static int
+sendDTLS(char *buf, size_t lenBuf)
+{
+ size_t lenSent;
+ int r, err;
+
+ lenSent = 0;
+ r = SSL_write(sslArray[0], buf + lenSent, lenBuf - lenSent);
+ if(r > 0) {
+ lenSent += r;
+ } else {
+ err = SSL_get_error(sslArray[0], r);
+ int err = SSL_get_error(sslArray[0], r);
+ switch(err) {
+ case SSL_ERROR_SYSCALL:
+ printf("[ERROR] SSL_write (SSL_ERROR_SYSCALL): %s\n", strerror(errno));
+ break;
+ default:
+ printf("[ERROR] while sending data: [%d] %s", err, ERR_error_string(err, NULL));
+ printf("[ERROR] Reason: %s", ERR_reason_error_string(err));
+ }
+ exit(1);
+ }
+ return lenSent;
+}
+
+static void
+closeDTLSSess()
+{
+ printf("closeDTLSSess ENTER\n");
+
+ int r;
+ r = SSL_shutdown(sslArray[0]);
+ if (r <= 0){
+ /* Shutdown not finished, call SSL_read to do a bidirectional shutdown, see doc for more:
+ * https://www.openssl.org/docs/man1.1.1/man3/SSL_shutdown.html
+ */
+ char rcvBuf[MAX_RCVBUF];
+ SSL_read(sslArray[0], rcvBuf, MAX_RCVBUF);
+
+ }
+ SSL_free(sslArray[0]);
+ close(udpsockout);
+ close(udpsockin);
+
+ printf("closeDTLSSess EXIT\n");
+}
+
+# elif defined(ENABLE_GNUTLS)
+/* This defines a log function to be provided to GnuTLS. It hopefully
+ * helps us track down hard to find problems.
+ * rgerhards, 2008-06-20
+ */
+static void tlsLogFunction(int level, const char *msg)
+{
+ printf("GnuTLS (level %d): %s", level, msg);
+}
+
+static void
+exitTLS(void)
+{
+}
+
+/* global init GnuTLS
+ */
+static void
+initTLS(void)
+{
+ int r;
+
+ /* order of gcry_control and gnutls_global_init matters! */
+ #if GNUTLS_VERSION_NUMBER <= 0x020b00
+ gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
+ #endif
+ gnutls_global_init();
+ /* set debug mode, if so required by the options */
+ if(tlsLogLevel > 0) {
+ gnutls_global_set_log_function(tlsLogFunction);
+ gnutls_global_set_log_level(tlsLogLevel);
+ }
+
+ r = gnutls_certificate_allocate_credentials(&tlscred);
+ if(r != GNUTLS_E_SUCCESS) {
+ printf("error allocating credentials\n");
+ gnutls_perror(r);
+ exit(1);
+ }
+ r = gnutls_certificate_set_x509_key_file(tlscred, tlsCertFile, tlsKeyFile, GNUTLS_X509_FMT_PEM);
+ if(r != GNUTLS_E_SUCCESS) {
+ printf("error setting certificate files -- have you mixed up key and certificate?\n");
+ printf("If in doubt, try swapping the files in -z/-Z\n");
+ printf("Certifcate is: '%s'\n", tlsCertFile);
+ printf("Key is: '%s'\n", tlsKeyFile);
+ gnutls_perror(r);
+ r = gnutls_certificate_set_x509_key_file(tlscred, tlsKeyFile, tlsCertFile,
+ GNUTLS_X509_FMT_PEM);
+ if(r == GNUTLS_E_SUCCESS) {
+ printf("Tried swapping files, this seems to work "
+ "(but results may be unpredictable!)\n");
+ } else {
+ exit(1);
+ }
+ }
+}
+
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
+static void
+initTLSSess(int i)
+{
+ int r;
+ gnutls_init(sessArray + i, GNUTLS_CLIENT);
+
+ /* Use default priorities */
+ gnutls_set_default_priority(sessArray[i]);
+
+ /* put our credentials to the current session */
+ r = gnutls_credentials_set(sessArray[i], GNUTLS_CRD_CERTIFICATE, tlscred);
+ if(r != GNUTLS_E_SUCCESS) {
+ fprintf (stderr, "Setting credentials failed\n");
+ gnutls_perror(r);
+ exit(1);
+ }
+
+ /* NOTE: the following statement generates a cast warning, but there seems to
+ * be no way around it with current GnuTLS. Do NOT try to "fix" the situation!
+ */
+ gnutls_transport_set_ptr(sessArray[i], (gnutls_transport_ptr_t) sockArray[i]);
+
+ /* Perform the TLS handshake */
+ r = gnutls_handshake(sessArray[i]);
+ if(r < 0) {
+ fprintf (stderr, "TLS Handshake failed\n");
+ gnutls_perror(r);
+ exit(1);
+ }
+}
+#pragma GCC diagnostic pop
+
+
+static int
+sendTLS(int i, char *buf, size_t lenBuf)
+{
+ int lenSent;
+ int r;
+
+ lenSent = 0;
+ while(lenSent != lenBuf) {
+ r = gnutls_record_send(sessArray[i], buf + lenSent, lenBuf - lenSent);
+ if(r < 0)
+ break;
+ lenSent += r;
+ }
+
+ return lenSent;
+}
+
+static void
+closeTLSSess(int i)
+{
+ gnutls_bye(sessArray[i], GNUTLS_SHUT_RDWR);
+ gnutls_deinit(sessArray[i]);
+}
+# else /* NO TLS available */
+static void initTLS(void) {}
+static void exitTLS(void) {}
+static void initTLSSess(int __attribute__((unused)) i) {}
+static int sendTLS(int __attribute__((unused)) i, char __attribute__((unused)) *buf,
+ size_t __attribute__((unused)) lenBuf) { return 0; }
+static void closeTLSSess(int __attribute__((unused)) i) {}
+
+static void initDTLSSess(void) {}
+static int sendDTLS(char *buf, size_t lenBuf) {}
+static void closeDTLSSess(void) {}
+# endif
+
+static void
+setTargetPorts(const char *const port_arg)
+{
+ int i = 0;
+
+ char *saveptr;
+ char *ports = strdup(port_arg);
+ char *port = strtok_r(ports, ":", &saveptr);
+ while(port != NULL) {
+ if(i == sizeof(targetPort)/sizeof(int)) {
+ fprintf(stderr, "too many ports specified, max %d\n",
+ (int) (sizeof(targetPort)/sizeof(int)));
+ exit(1);
+ }
+ targetPort[i] = atoi(port);
+ i++;
+ port = strtok_r(NULL, ":", &saveptr);
+ }
+ free(ports);
+}
+
+
+/* Run the test.
+ * rgerhards, 2009-04-03
+ */
+int main(int argc, char *argv[])
+{
+ int ret = 0;
+ int opt;
+ struct sigaction sigAct;
+ struct rlimit maxFiles;
+ static char buf[1024];
+
+ srand(time(NULL)); /* seed is good enough for our needs */
+
+ /* on Solaris, we do not HAVE MSG_NOSIGNAL, so for this reason
+ * we block SIGPIPE (not an issue for this program)
+ */
+ memset(&sigAct, 0, sizeof(sigAct));
+ sigemptyset(&sigAct.sa_mask);
+ sigAct.sa_handler = SIG_IGN;
+ sigaction(SIGPIPE, &sigAct, NULL);
+
+ setvbuf(stdout, buf, _IONBF, 48);
+
+ while((opt = getopt(argc, argv, "a:ABb:c:C:d:DeE:f:F:i:I:j:k:l:L:m:M:n:OP:p:rR:sS:t:T:u:vW:x:XyYz:Z:")) != -1) {
+ switch (opt) {
+ case 'b': batchsize = atoll(optarg);
+ break;
+ case 't': targetIP = optarg;
+ break;
+ case 'p': setTargetPorts(optarg);
+ break;
+ case 'n': numTargetPorts = atoi(optarg);
+ break;
+ case 'c': numConnections = atoi(optarg);
+ if(numConnections < 0) {
+ numConnections *= -1;
+ softLimitConnections = 1;
+ }
+ break;
+ case 'C': numFileIterations = atoi(optarg);
+ break;
+ case 'm': numMsgsToSend = atoi(optarg);
+ break;
+ case 'i': msgNum = atoi(optarg);
+ break;
+ case 'P': msgPRI = optarg;
+ break;
+ case 'j': jsonCookie = optarg;
+ break;
+ case 'd': extraDataLen = atoi(optarg);
+ if(extraDataLen > MAX_EXTRADATA_LEN) {
+ fprintf(stderr, "-d max is %d!\n",
+ MAX_EXTRADATA_LEN);
+ exit(1);
+ }
+ break;
+ case 'D': bRandConnDrop = 1;
+ break;
+ case 'l':
+ dbRandConnDrop = atof(optarg);
+ printf("RandConnDrop Level: '%lf' \n", dbRandConnDrop);
+ break;
+ case 'r': bRandomizeExtraData = 1;
+ break;
+ case 'f': dynFileIDs = atoi(optarg);
+ break;
+ case 'F': frameDelim = atoi(optarg);
+ break;
+ case 'L': tlsLogLevel = atoi(optarg);
+ break;
+ case 'M': MsgToSend = optarg;
+ break;
+ case 'I': dataFile = optarg;
+ /* in this mode, we do not know the num messages to send, so
+ * we set a (high) number to keep the code happy.
+ */
+ numMsgsToSend = 1000000;
+ break;
+ case 's': bSilent = 1;
+ break;
+ case 'B': bBinaryFile = 1;
+ break;
+ case 'R': numRuns = atoi(optarg);
+ break;
+ case 'S': sleepBetweenRuns = atoi(optarg);
+ break;
+ case 'X': bStatsRecords = 1;
+ break;
+ case 'e': bCSVoutput = 1;
+ break;
+ case 'T': if(!strcmp(optarg, "udp")) {
+ transport = TP_UDP;
+ } else if(!strcmp(optarg, "tcp")) {
+ transport = TP_TCP;
+ } else if(!strcmp(optarg, "tls")) {
+# if defined(ENABLE_OPENSSL)
+ transport = TP_TLS;
+# elif defined(ENABLE_GNUTLS)
+ transport = TP_TLS;
+# else
+ fprintf(stderr, "compiled without gnutls/openssl TLS support: "
+ "\"-Ttls\" not supported!\n");
+ exit(1);
+# endif
+ } else if(!strcmp(optarg, "relp-plain")) {
+# if defined(ENABLE_RELP)
+ transport = TP_RELP_PLAIN;
+# else
+ fprintf(stderr, "compiled without RELP support: "
+ "\"-Trelp-plain\" not supported!\n"
+ "(add --enable-relp to ./configure options "
+ "if desired)\n");
+ exit(1);
+# endif
+ } else if(!strcmp(optarg, "relp-tls")) {
+# if defined(ENABLE_RELP)
+ transport = TP_RELP_TLS;
+# else
+ fprintf(stderr, "compiled without RELP support: "
+ "\"-Trelp-tls\" not supported!\n"
+ "(add --enable-relp to ./configure options "
+ "if desired)\n");
+ exit(1);
+# endif
+ } else if(!strcmp(optarg, "dtls")) {
+# if defined(ENABLE_OPENSSL)
+ transport = TP_DTLS;
+# else
+ fprintf(stderr, "compiled without openssl TLS support: "
+ "\"-Tdtls\" not supported!\n");
+ exit(1);
+# endif
+ } else {
+ fprintf(stderr, "unknown transport '%s'\n", optarg);
+ exit(1);
+ }
+ break;
+ case 'a': relpAuthMode = optarg;
+ break;
+ case 'A': abortOnSendFail = 0;
+ break;
+ case 'E': relpPermittedPeer = optarg;
+ break;
+ case 'u':
+#if defined(HAVE_RELPENGINESETTLSLIBBYNAME)
+ relpTlsLib = optarg;
+#endif
+ break;
+ case 'W': waittime = atoi(optarg);
+ break;
+ case 'Y': runMultithreaded = 1;
+ break;
+ case 'y': useRFC5424Format = 1;
+ break;
+ case 'x': tlsCAFile = optarg;
+ break;
+ case 'z': tlsKeyFile = optarg;
+ break;
+ case 'Z': tlsCertFile = optarg;
+ break;
+ case 'O': octateCountFramed = 1;
+ break;
+ case 'v': verbose = 1;
+ break;
+ case 'k': customConfig = optarg;
+ break;
+ default: printf("invalid option '%c' or value missing - terminating...\n", opt);
+ exit (1);
+ break;
+ }
+ }
+
+ const char *const ci_env = getenv("CI");
+ if(ci_env != NULL && !strcmp(ci_env, "true")) {
+ bSilent = 1; /* auto-apply silent option during CI runs */
+ }
+
+ if(tlsCAFile != NULL && transport != TP_RELP_TLS) {
+ #if !defined(ENABLE_OPENSSL)
+ fprintf(stderr, "-x CAFile not supported in GnuTLS mode - ignored.\n"
+ "Note: we do NOT VERIFY the remote peer when compiled for GnuTLS.\n"
+ "When compiled for OpenSSL, we do.\n");
+ #endif
+ }
+
+ if(bStatsRecords && waittime) {
+ fprintf(stderr, "warning: generating performance stats and using a waittime "
+ "is somewhat contradictory!\n");
+ }
+
+ if(!isatty(1) || bSilent)
+ bShowProgress = 0;
+
+ if(numConnections > 20) {
+ /* if we use many (whatever this means, 20 is randomly picked)
+ * connections, we need to make sure we have a high enough
+ * limit. -- rgerhards, 2010-03-25
+ */
+ maxFiles.rlim_cur = numConnections + 20;
+ maxFiles.rlim_max = numConnections + 20;
+ if(setrlimit(RLIMIT_NOFILE, &maxFiles) < 0) {
+ perror("setrlimit to increase file handles failed");
+ fprintf(stderr,
+ "could not set sufficiently large number of "
+ "open files for required connection count!\n");
+ if(!softLimitConnections) {
+ exit(1);
+ }
+ }
+ }
+
+ if(dataFile != NULL) {
+ if((dataFP = fopen(dataFile, "r")) == NULL) {
+ perror(dataFile);
+ exit(1);
+ }
+ }
+
+ if(tlsKeyFile != NULL || tlsCertFile != NULL) {
+ if( transport != TP_TLS &&
+ transport != TP_DTLS &&
+ transport != TP_RELP_TLS) {
+ printf("error: TLS certificates were specified, but TLS is NOT enabled: "
+ "To enable TLS use parameter -Ttls\n");
+ exit(1);
+ }
+ }
+
+ if(transport == TP_TLS) {
+ if(tlsKeyFile == NULL || tlsCertFile == NULL) {
+ printf("error: transport TLS is specified (-Ttls), -z and -Z must also "
+ "be specified\n");
+ exit(1);
+ }
+ /* Create main CTX Object. Use SSLv23_method for < Openssl 1.1.0 and TLS_method for newer versions! */
+#if defined(ENABLE_OPENSSL)
+# if OPENSSL_VERSION_NUMBER < 0x10100000L
+ initTLS(SSLv23_method());
+# else
+ initTLS(TLS_method());
+# endif
+#else
+ initTLS();
+#endif
+ } else if(transport == TP_DTLS) {
+ if(tlsKeyFile == NULL || tlsCertFile == NULL) {
+ printf("error: transport DTLS is specified (-Tdtls), -z and -Z must also "
+ "be specified\n");
+ exit(1);
+ }
+#if defined(ENABLE_OPENSSL)
+ initTLS(DTLS_client_method());
+#else
+ printf("error: transport DTLS is specified (-Tdtls) but not supported in GnuTLS driver\n");
+ exit(1);
+#endif
+ } else if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ #ifdef ENABLE_RELP
+ initRELP_PLAIN();
+ #endif
+ }
+
+ if(openConnections() != 0) {
+ printf("error opening connections\n");
+ exit(1);
+ }
+
+ if(runTests() != 0) {
+ printf("error running tests\n");
+ exit(1);
+ }
+
+ closeConnections(); /* this is important so that we do not finish too early! */
+
+ #ifdef ENABLE_RELP
+ if(transport == TP_RELP_PLAIN || transport == TP_RELP_TLS) {
+ CHKRELP(relpEngineDestruct(&pRelpEngine));
+ }
+ #endif
+
+ if(nConnDrops > 0 && !bSilent)
+ printf("-D option initiated %ld connection closures\n", nConnDrops);
+
+ if(!bSilent)
+ printf("End of tcpflood Run\n");
+
+ if(transport == TP_TLS) {
+ exitTLS();
+ }
+
+ exit(ret);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-28 20:08:08 +0000