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/*
* 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 <string.h>
#include <stdlib.h>
#include <stdio.h>
#define PYTHON_PATH "/usr/bin/python"
const char python_eater[]=
"#!/usr/bin/python\n"
"import sys\n"
"print 'go'\n"
"sys.stdout.flush()\n"
"toread=XXXXXXXXXX\n"
"read=0\n"
"while(read < toread):\n"
" buffersize=toread-read\n"
" if(buffersize > 4096):\n"
" buffersize=4096\n"
" r=len(sys.stdin.read(buffersize))\n"
" read+=r\n"
" if(r<=0):\n"
" print 'error'\n"
" exit()\n"
"print 'done'\n";
static char *get_python_eater(unsigned long bytes){
char *eater=malloc(sizeof(python_eater));
char *ptr;
char buffer[12];
memcpy(eater,python_eater,sizeof(python_eater));
ptr=strstr(eater,"XXXXXXXXXX");
if(!ptr){
free(eater);
return NULL;
}
sprintf(buffer,"0x%.8lx",bytes);
memcpy(ptr,buffer,10);
return eater;
}
/** @internal
* @brief uploads a script (python or other) at a specific path on the
* remote host
* @param[in] session an active SSH session
* @param[in] path to copy the file
* @param[in] content of the file to copy
* @return 0 on success, -1 on error
*/
static int upload_script(ssh_session session, const char *path,
const char *script){
ssh_channel channel;
char cmd[128];
int err;
channel=ssh_channel_new(session);
if(!channel)
goto error;
if(ssh_channel_open_session(channel) == SSH_ERROR)
goto error;
snprintf(cmd,sizeof(cmd),"cat > %s",path);
if(ssh_channel_request_exec(channel,cmd) == SSH_ERROR)
goto error;
err=ssh_channel_write(channel,script,strlen(script));
if(err == SSH_ERROR)
goto error;
if(ssh_channel_send_eof(channel) == SSH_ERROR)
goto error;
if(ssh_channel_close(channel) == SSH_ERROR)
goto error;
ssh_channel_free(channel);
return 0;
error:
fprintf(stderr,"Error while copying script : %s\n",ssh_get_error(session));
return -1;
}
/** @internal
* @brief benchmarks a raw upload (simple upload in a SSH channel) using an
* existing SSH session.
* @param[in] session Open SSH session
* @param[in] args Parsed command line arguments
* @param[out] bps The calculated bytes per second obtained via benchmark.
* @return 0 on success, -1 on error.
*/
int benchmarks_raw_up (ssh_session session, struct argument_s *args,
float *bps){
unsigned long bytes=0x1000000;
char *script=get_python_eater(bytes);
char cmd[128];
char buffer[1024];
int err;
ssh_channel channel;
struct timestamp_struct ts;
float ms=0.0;
unsigned long total=0;
(void)bps;
err=upload_script(session,"/tmp/eater.py",script);
free(script);
if(err<0)
return err;
channel=ssh_channel_new(session);
if(channel == NULL)
goto error;
if(ssh_channel_open_session(channel)==SSH_ERROR)
goto error;
snprintf(cmd,sizeof(cmd),"%s /tmp/eater.py", PYTHON_PATH);
if(ssh_channel_request_exec(channel,cmd)==SSH_ERROR)
goto error;
if((err=ssh_channel_read(channel,buffer,sizeof(buffer)-1,0))==SSH_ERROR)
goto error;
buffer[err]=0;
if(!strstr(buffer,"go")){
fprintf(stderr,"parse error : %s\n",buffer);
ssh_channel_close(channel);
ssh_channel_free(channel);
return -1;
}
if(args->verbose>0)
fprintf(stdout,"Starting upload of %lu bytes now\n",bytes);
timestamp_init(&ts);
while(total < bytes){
unsigned long towrite = bytes - total;
int w;
if(towrite > 0x1000)
towrite = 0x1000;
w=ssh_channel_write(channel,buffer,towrite);
if(w == SSH_ERROR)
goto error;
total += w;
}
if(args->verbose>0)
fprintf(stdout,"Finished upload, now waiting the ack\n");
if((err=ssh_channel_read(channel,buffer,sizeof(buffer)-1,0))==SSH_ERROR)
goto error;
buffer[err]=0;
if(!strstr(buffer,"done")){
fprintf(stderr,"parse error : %s\n",buffer);
ssh_channel_close(channel);
ssh_channel_free(channel);
return -1;
}
ms=elapsed_time(&ts);
*bps=8000 * (float)bytes / ms;
if(args->verbose > 0)
fprintf(stdout,"Upload took %f ms for %lu bytes, at %f bps\n",ms,
bytes,*bps);
ssh_channel_close(channel);
ssh_channel_free(channel);
return 0;
error:
fprintf(stderr,"Error during raw upload : %s\n",ssh_get_error(session));
if(channel){
ssh_channel_close(channel);
ssh_channel_free(channel);
}
return -1;
}
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