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/* bench_scp.c
*
* This file is part of the SSH Library
*
* Copyright (c) 2011 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>
#define SCPDIR "/tmp/"
#define SCPFILE "scpbenchmark"
/** @internal
* @brief benchmarks a scp upload 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_scp_up (ssh_session session, struct argument_s *args,
float *bps){
unsigned long bytes;
struct timestamp_struct ts;
float ms=0.0;
unsigned long total=0;
ssh_scp scp;
bytes = args->datasize * 1024 * 1024;
scp = ssh_scp_new(session,SSH_SCP_WRITE,SCPDIR);
if(scp == NULL)
goto error;
if(ssh_scp_init(scp)==SSH_ERROR)
goto error;
if(ssh_scp_push_file(scp,SCPFILE,bytes,0777) != SSH_OK)
goto error;
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 > args->chunksize)
towrite = args->chunksize;
w=ssh_scp_write(scp,buffer,towrite);
if(w == SSH_ERROR)
goto error;
total += towrite;
}
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_scp_close(scp);
ssh_scp_free(scp);
return 0;
error:
fprintf(stderr,"Error during scp upload : %s\n",ssh_get_error(session));
if(scp){
ssh_scp_close(scp);
ssh_scp_free(scp);
}
return -1;
}
/** @internal
* @brief benchmarks a scp download 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_scp_down (ssh_session session, struct argument_s *args,
float *bps){
unsigned long bytes;
struct timestamp_struct ts;
float ms=0.0;
unsigned long total=0;
ssh_scp scp;
int r;
size_t size;
bytes = args->datasize * 1024 * 1024;
scp = ssh_scp_new(session,SSH_SCP_READ,SCPDIR SCPFILE);
if(scp == NULL)
goto error;
if(ssh_scp_init(scp)==SSH_ERROR)
goto error;
r=ssh_scp_pull_request(scp);
if(r == SSH_SCP_REQUEST_NEWFILE){
size=ssh_scp_request_get_size(scp);
if(bytes > size){
printf("Only %d bytes available (on %lu requested).\n",size,bytes);
bytes = size;
}
if(size > bytes){
printf("File is %d bytes (on %lu requested). Will cut the end\n",size,bytes);
}
if(args->verbose>0)
fprintf(stdout,"Starting download of %lu bytes now\n",bytes);
timestamp_init(&ts);
ssh_scp_accept_request(scp);
while(total < bytes){
unsigned long toread = bytes - total;
if(toread > args->chunksize)
toread = args->chunksize;
r=ssh_scp_read(scp,buffer,toread);
if(r == SSH_ERROR || r == 0)
goto error;
total += r;
}
ms=elapsed_time(&ts);
*bps=8000 * (float)bytes / ms;
if(args->verbose > 0)
fprintf(stdout,"download took %f ms for %lu bytes, at %f bps\n",ms,
bytes,*bps);
} else {
fprintf(stderr,"Expected SSH_SCP_REQUEST_NEWFILE, got %d\n",r);
goto error;
}
ssh_scp_close(scp);
ssh_scp_free(scp);
return 0;
error:
fprintf(stderr,"Error during scp download : %s\n",ssh_get_error(session));
if(scp){
ssh_scp_close(scp);
ssh_scp_free(scp);
}
return -1;
}
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