Moved benchmarks to the tests/ directory

tests/benchmarks/latency.c

@@ -0,0 +1,136 @@
+/*
+ * This file is part of the SSH Library
+ *
+ * Copyright (c) 2010 by Aris Adamantiadis
+ *
+ * The SSH Library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ *
+ * The SSH Library 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the SSH Library; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#include "benchmarks.h"
+#include <libssh/libssh.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#define PING_PROGRAM "/bin/ping"
+
+/** @internal
+ * @brief Calculates the RTT of the host with ICMP ping, and returns the
+ * average of the calculated RTT.
+ * @param[in] host hostname to ping.
+ * @param[out] average average RTT in ms.
+ * @returns 0 on success, -1 if there is an error.
+ * @warning relies on an external ping program which may not exist on
+ * certain OS.
+ */
+int benchmarks_ping_latency (const char *host, float *average){
+  const char *ptr;
+  char cmd[256];
+  char line[1024];
+  FILE *fd;
+  int found=0;
+
+  /* strip out the hostname */
+  ptr=strchr(host,'@');
+  if(ptr)
+    ptr++;
+  else
+    ptr=host;
+
+  snprintf(cmd,sizeof(cmd),"%s -n -q -c3 %s",PING_PROGRAM, ptr);
+  fd=popen(cmd,"r");
+  if(fd==NULL){
+    fprintf(stderr,"Error executing command : %s\n", strerror(errno));
+    return -1;
+  }
+
+  while(!found && fgets(line,sizeof(line),fd)!=NULL){
+    if(strstr(line,"rtt")){
+      ptr=strchr(line,'=');
+      if(ptr==NULL)
+        goto parseerror;
+      ptr=strchr(ptr,'/');
+      if(ptr==NULL)
+        goto parseerror;
+      *average=strtof(ptr+1,NULL);
+      found=1;
+      break;
+    }
+  }
+  if(!found)
+    goto parseerror;
+  fclose(fd);
+  return 0;
+
+parseerror:
+  fprintf(stderr,"Parse error : couldn't locate average in %s",line);
+  fclose(fd);
+  return -1;
+}
+
+struct timestamp_struct {
+  struct timeval timestamp;
+};
+
+static void timestamp_init(struct timestamp_struct *ts){
+  gettimeofday(&ts->timestamp,NULL);
+}
+
+static float elapsed_time(struct timestamp_struct *ts){
+  struct timeval now;
+  time_t secdiff;
+  long usecdiff; /* may be negative */
+
+  gettimeofday(&now,NULL);
+  secdiff=now.tv_sec - ts->timestamp.tv_sec;
+  usecdiff=now.tv_usec - ts->timestamp.tv_usec;
+  //printf("%d sec diff, %d usec diff\n",secdiff, usecdiff);
+  return (float) (secdiff*1000) + ((float)usecdiff)/1000;
+}
+
+int benchmarks_ssh_latency(ssh_session session, float *average){
+  float times[3];
+  struct timestamp_struct ts;
+  int i;
+  ssh_channel channel;
+  channel=ssh_channel_new(session);
+  if(channel==NULL)
+    goto error;
+  if(ssh_channel_open_session(channel)==SSH_ERROR)
+    goto error;
+
+  for(i=0;i<3;++i){
+    timestamp_init(&ts);
+    if(ssh_channel_request_env(channel,"TEST","test")==SSH_ERROR &&
+        ssh_get_error_code(session)==SSH_FATAL)
+      goto error;
+    times[i]=elapsed_time(&ts);
+  }
+  ssh_channel_close(channel);
+  ssh_channel_free(channel);
+  channel=NULL;
+  printf("Times : %f ms ; %f ms ; %f ms\n", times[0], times[1], times[2]);
+  *average=(times[0]+times[1]+times[2])/3;
+  return 0;
+error:
+  fprintf(stderr,"Error calculating SSH latency : %s\n",ssh_get_error(session));
+  if(channel)
+    ssh_channel_free(channel);
+  return -1;
+}