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/*
* main.c
*
* Created on: 22 juin 2009
* Author: aris
*/
#include <stdio.h>
#include <libssh/libssh.h>
#include <libssh/sftp.h>
#include <time.h>
#include <stdlib.h>
#include <fcntl.h>
#include <signal.h>
#include <pthread.h>
#define TEST_READ 1
#define TEST_WRITE 2
#define NTHREADS 3
#define FILESIZE 100000
unsigned char samplefile[FILESIZE];
volatile int stop=0;
const char* hosts[]={"localhost","barebone"};
void signal_stop(){
stop=1;
printf("Stopping...\n");
}
SSH_SESSION *connect_host(const char *hostname);
int sftp_test(SSH_SESSION *session, int test);
int docycle(const char *host, int test){
SSH_SESSION *session=connect_host(host);
int ret=SSH_ERROR;
if(!session){
printf("connect failed\n");
} else {
printf("Connected\n");
ret=sftp_test(session,test);
if(ret != SSH_OK){
printf("Error in sftp\n");
}
ssh_disconnect(session);
}
return ret;
}
int thread(){
while(docycle(hosts[rand()%2],TEST_WRITE) == SSH_OK)
if(stop)
break;
return 0;
}
int main(int argc, char **argv){
int i;
pthread_t threads[NTHREADS];
ssh_init();
srand(time(NULL));
for(i=0;i<FILESIZE;++i)
samplefile[i]=rand() & 0xff;
signal(SIGTERM,signal_stop);
signal(SIGINT,signal_stop);
for(i=0;i<NTHREADS;++i){
srand(i);
pthread_create(&threads[i],NULL,(void *) thread, NULL);
}
for(i=0;i<NTHREADS;++i){
pthread_join(threads[i],NULL);
}
ssh_finalize();
printf("Ended\n");
return 0;
}
SSH_SESSION *connect_host(const char *hostname){
SSH_SESSION *session;
SSH_OPTIONS *options;
int auth=0;
int state;
options=ssh_options_new();
ssh_options_set_host(options,hostname);
session=ssh_new();
ssh_set_options(session,options);
if(ssh_connect(session)){
fprintf(stderr,"Connection failed : %s\n",ssh_get_error(session));
ssh_disconnect(session);
return NULL;
}
state=ssh_is_server_known(session);
switch(state){
case SSH_SERVER_KNOWN_OK:
break; /* ok */
case SSH_SERVER_KNOWN_CHANGED:
fprintf(stderr,"Host key for server changed : server's one is now :\n");
fprintf(stderr,"For security reason, connection will be stopped\n");
ssh_disconnect(session);
ssh_finalize();
return NULL;
case SSH_SERVER_FOUND_OTHER:
fprintf(stderr,"The host key for this server was not found but an other type of key exists.\n");
fprintf(stderr,"An attacker might change the default server key to confuse your client"
"into thinking the key does not exist\n"
"We advise you to rerun the client with -d or -r for more safety.\n");
ssh_disconnect(session);
ssh_finalize();
return NULL;
case SSH_SERVER_NOT_KNOWN:
fprintf(stderr,"The server is unknown. Leaving now");
ssh_disconnect(session);
return NULL;
case SSH_SERVER_ERROR:
fprintf(stderr,"%s",ssh_get_error(session));
ssh_disconnect(session);
return NULL;
}
ssh_userauth_none(session, NULL);
auth=ssh_userauth_autopubkey(session, NULL);
if(auth==SSH_AUTH_ERROR){
fprintf(stderr,"Authenticating with pubkey: %s\n",ssh_get_error(session));
ssh_disconnect(session);
return NULL;
}
if(auth!=SSH_AUTH_SUCCESS){
fprintf(stderr,"Authentication failed: %s\n",ssh_get_error(session));
ssh_disconnect(session);
return NULL;
}
ssh_log(session, SSH_LOG_FUNCTIONS, "Authentication success");
return session;
}
int sftp_test(SSH_SESSION *session, int test){
SFTP_SESSION *sftp=sftp_new(session);
SFTP_FILE *file;
int wrote=0;
char name[128];
if(sftp == NULL)
return SSH_ERROR;
if(sftp_init(sftp)<0){
printf("problem initializing sftp : %s\n",ssh_get_error(session));
return SSH_ERROR;
}
if(test==TEST_WRITE){
snprintf(name,sizeof(name),"/tmp/libsshstress%d",rand());
file=sftp_open(sftp,name,O_RDWR|O_CREAT,0777);
if(!file){
printf("Failed to open file : %s\n",ssh_get_error(session));
sftp_free(sftp);
return SSH_ERROR;
}
while(wrote<FILESIZE){
int max=FILESIZE-wrote;
int towrite=rand()%max + 1;
int ret=sftp_write(file,&samplefile[wrote],towrite);
if(ret<=0){
printf("Problem while writing : %s\n",ssh_get_error(session));
sftp_free(sftp);
return SSH_ERROR;
}
if(ret != towrite){
printf("Asked to write %d, wrote %d\n",towrite,ret);
}
wrote += ret;
}
sftp_close(file);
}
sftp_free(sftp);
return SSH_OK;
}
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