static int search_prompt(char *withdef, char *withoutdef)
{
char buffer[80];
int len;
if (!get_str(last_search ? withdef : withoutdef, buffer, TRUE))
return 0; /* user break */
if (!last_search && !*buffer) {
strcpy (message, "Search aborted.");
return 0;
}
if (!*buffer) {
len = last_search->len;
} else {
len = parse_quoted (buffer);
if (len == -1) {
display_beep();
strcpy (message, "Invalid escape sequence in search string");
return 0;
}
if (last_search)
free_search(last_search);
last_search = build_search (buffer, len);
}
return 1;
}
/* the agent is now a separate thread */
void *
server_agent(void *params) {
int client_fd, n, errcode;
enum header_types type;
unsigned int len;
char to_search[MAX_SEARCH_STR];
char remote_obj[REMOTE_NAME_MAX];
time_type t_start, t_end;
double tdiff;
msg_one msg1;
search *mysearch;
Statistics statistic;
/* we are now successfully connected to a remote client */
client_fd = ((struct thread_params *) params)->client_fd;
fprintf(stderr, "Starting Agent fd: %d, thread id: %lu \n", client_fd,
(unsigned long) pthread_self());
/* do some initialization*/
memset(&statistic, 0, sizeof(Statistics));
errcode = pthread_detach(pthread_self());
if (errcode != 0) {
fprintf(stderr, "pthread_detach server agent: %s\n", strerror(errcode));
}
pthread_once(&init_done, thread_init);
get_time(&t_start);
len = sizeof(msg_one);
/* first message should be the file name */
if ((n = our_recv_message(client_fd, &type, &len, &msg1)) < 0)
return NULL;
if (type != OPTION_PARAMETER)
return NULL;
/*firstly build the search object */
mysearch = build_search(&msg1);
mysearch->client_fd = client_fd;
/* then print the search options */
print_search_para(client_fd, mysearch);
/* receive the second message*/
len = MAX_SEARCH_STR;
if ((n = our_recv_message(client_fd, &type, &len, to_search)) < 0)
return NULL;
if (type != TO_SEARCH)
return NULL;
len = strlen(to_search);
if ((mysearch->search_pattern = (char*) malloc(len + 1)) == NULL) {
perror("malloc");
free(params);
return NULL;
}
strncpy(mysearch->search_pattern, to_search, len+1);
/*build its own shift table if needed */
build_shifttable(mysearch);
/* receive the second message*/
len = REMOTE_NAME_MAX;
if ((n = our_recv_message(client_fd, &type, &len, remote_obj)) < 0)
return NULL;
if (type != REMOTE_NAME)
return NULL;
/* do the search job */
search_given(remote_obj, mysearch);
/* send the statistics message 6*/
/*wait for directory search to be finished if it is on the server side*/
while (mysearch->stk_count != 0) {
pthread_cond_wait(&(mysearch->ready), &(mysearch->lock));
}
len = sizeof(Statistics);
/* make a copy of little/big endian adapted statistical structure*/
update_statistics_sock(&statistic, &mysearch->statistics);
trans_stat2send(&statistic);
if (our_send_message(mysearch->client_fd, STATISTICS_MSG, len, &statistic)
!= 0) {
fprintf(stderr, "Fail to send statistics\n");
return NULL;
}
get_time(&t_end);
tdiff = time_diff(&t_start, &t_end);
fprintf(stderr, "Search Statistics: client fd %u, thread id %lu\n",
mysearch->client_fd, (unsigned long) pthread_self());
print_stat(stderr, &mysearch->statistics, tdiff);
destroy_search(mysearch);
fprintf(stderr, "Terminating Agent fd: %d, thread id: %lu \n", client_fd,
(unsigned long) pthread_self());
free(params);
return NULL;
} /* server_agent */
