static void grow(Dict d)
{
Dict d2; /* new dictionary we'll create */
struct dict swap; /* temporary structure for brain transplant */
int i;
struct elt *e;
d2 = internalDictCreate(d->size * GROWTH_FACTOR);
for(i = 0; i < d->size; i++) {
for(e = d->table[i]; e != 0; e = e->next) {
/* note: this recopies everything */
/* a more efficient implementation would
* patch out the strdups inside DictInsert
* to avoid this problem */
DictInsert(d2, e->key, e->value, e->dist);
}
}
/* the hideous part */
/* We'll swap the guts of d and d2 */
/* then call DictDestroy on d2 */
swap = *d;
*d = *d2;
*d2 = swap;
DictDestroy(d2);
}
void join(int socket)
{
char new_client_id[20];
sprintf(new_client_id,"%d", client_id++);
DictInsert(clients, new_client_id, -1);
write(socket, new_client_id, sizeof(new_client_id));
}
// прием соединения, если новых соединений нет или произошла ошибка то connectionfd == -1
int acceptConnection(int epollfd, int socketfd, struct UserParams userParams){
struct sockaddr addr;
socklen_t addrlen = sizeof addr;
int connectionfd = accept(socketfd, &addr, &addrlen);
if (connectionfd == -1){
perror ("failed to accept connection");
return -1;
}
char host[NI_MAXHOST];
char service[NI_MAXSERV];
//резервирование символьного адреса и имени сервиса
if(!getnameinfo(&addr, addrlen, host, sizeof host, service, sizeof service, NI_NUMERICHOST | NI_NUMERICSERV)){
//вывод информации о полльзователе
printf("new connection: %s:%s\n", host, service);
}
if (setNonBlock(connectionfd) == -1){
fprintf(stderr, "failed to set socket %d nonblock", connectionfd);
return -1;
}
//добавление в epol
if (addToEpoll(epollfd, connectionfd) == -1){
fprintf(stderr, "failed to add socket %d to epoll", connectionfd);
return -1;
}
dprintf(connectionfd,"Enter login: "******"%d",connectionfd);
DictInsert(userParams.login, conBuf, "");
snprintf(conBuf, 4,"%d",connectionfd);
DictInsert(userParams.fLogin, conBuf, "0");
return 0;
}
/*
* Install a handler for the object that has been given the name 'name'.
* One handler is allowed per named object.
* Return 0 on error, non-zero on success.
*/
DXLError
DXLSetObjectHandler(DXLConnection *conn, const char *varname,
DXLObjectHandler handler, const void *data)
{
HandlerData *hd;
if (!conn->objectHandlerDict && !InitializeObjectHandler(conn))
return ERROR;
hd = NewHandlerData(handler,data);
if (!hd)
return ERROR;
if (!DictInsert(conn->objectHandlerDict,varname,hd,
DictDeleteHandlerData)) {
DeleteHandlerData(hd);
return ERROR;
}
return OK;
}
void get_next(char* client, int socket)
{
int last_msg = DictSearch( clients, client );
int new_msg = last_msg + 1;
char to_ret[MSG_SIZE];
printf(" Client: %s Last_Msg: %d New_Msg: %d \n", client, last_msg, new_msg);
if( msg_in_history(client, last_msg) == 0 )
{
if( new_msg < num_msg)
{
sprintf(to_ret,"%s", DictSearchS(messages, new_msg));
DictDelete(clients, client);
DictInsert(clients, client, new_msg);
}
else
{
sprintf(to_ret,"%s","No new messages ");
}
}
write(socket, to_ret, sizeof(to_ret));
}//end get_next
int
main(int argc, char* argv[])
{
Dict d;
int i;
char a = 96;
//int code = 0;
int MAXBITS = 12;
int pused = 2;
int pref = 0;
if (argc == 2){
MAXBITS = atoi(argv[1]);
}
d = internalDictCreate(1 << MAXBITS);
printf("%d", d->size);
for(i = 0; i < 8; i++) {
a++;
pref =(int) a + i;
if(d->n >= d->size) {
printf("%s\n", "Table filled, grow");
//exit(1);
Dictgrow(d);
}
DictInsert(d, pref, a, i);
DictUse(d, pref, a, i);
if (i % 2 == 0){
DictUse(d, pref, a, i);
}
printf("Found (%d, %d) at code %d\n", pref, a, i);
}
DictPrune(d, pused);
DictInsert(d, 105, 'e', 4);
FILE *fp = fopen("table", "w");
DicttoFile(d, fp);
/*printf("%d", d->size);
for(i = 0; i < 26; i++) {
a++;
code = (int) a + i;
if(d->n >= d->size) {
printf("%s\n", "Table filled, grow by x2");
Dictgrow(d);
}
DictInsert(d, i, (int) a, code);
printf("Found (%d, %d) with code %d\n", i, a, DictSearch(d, i, a));
}
FILE *fp = fopen("table", "w");
DicttoFile(d, fp);
DictDelete(d, 7, 104);
assert(DictSearch(d, 7, 104) == -1);
a=96;
for(i = 0; i < 26; i++) {
a++;
if (DictSearch(d, i, (int)a) != -1){
printf("Found (%d, %d) with code %d\n", i, a, DictSearch(d, i, a));
}
else{
printf("Did not find (%d, %d)\n", i, a);
}
}*/
DictDestroy(d);
printf("%s\n", "Dictionary is empty");
return 0;
}
//чтение данных, присланных пользователем
int handlerRequest(int epollfd, int connectionfd, struct UserParams userParams, pthread_mutex_t mutex){
int buffCount = 1024;
int i = 3;
char *buffer = (char*) malloc(buffCount * sizeof(char));
char conBuf[4];
ssize_t count = read(connectionfd, buffer, sizeof buffer);
char *ret;
//динамическое выделение памяти для буфера
char bufferN[buffCount];
ssize_t countN = read(connectionfd, bufferN, sizeof bufferN);
while(countN > 0){
ret = (char*)realloc(buffer,i*buffCount*sizeof(char));
if(!ret){
perror("realloc");
exit(1);
}
strcat(buffer, bufferN);
count+=countN;
i++;
countN = read(connectionfd, bufferN, sizeof bufferN);
}
switch(count){
case -1:
if (errno != EAGAIN)
perror ("failed to read data");
break;
case 0:
printf("client closed the connection");
break;
default:
snprintf(conBuf, 4,"%d",connectionfd);
//ввод логина
if(!strcmp(DictSearch(userParams.login, conBuf),"")){
if (count > 1){
char *tmpLogin = (char*) malloc(count+1);
strncpy(tmpLogin, buffer, count);
tmpLogin[count] = '\0';
DictInsert(userParams.login,conBuf,tmpLogin);
printf("%s\n", DictSearch(userParams.login, conBuf));
dprintf(connectionfd, "Enter password: "******"Enter login: "******"0")){
char *tmpPass=(char*) malloc(count+1);
strncpy(tmpPass, buffer, count);
tmpPass[count] = '\0';
//вызов проверки
pthread_mutex_lock(&mutex);
int check = checkLogin(DictSearch(userParams.login, conBuf), tmpPass);
pthread_mutex_unlock(&mutex);
if(check == 1){
DictDelete(userParams.fLogin,conBuf);
DictInsert(userParams.fLogin,conBuf,"1");
DictInsert(userParams.location,conBuf,"cd user_root/;");
dprintf(connectionfd, "!!Enter command: ");
}
else{
DictDelete(userParams.login,conBuf);
DictInsert(userParams.login,conBuf,"");
dprintf(connectionfd,"Enter login: "******"logout",6))
close(connectionfd);
else{
int c;
FILE *pp;
extern FILE *popen();
char* tempCd = (char*) malloc(1024*sizeof(char));
strcpy(tempCd, DictSearch(userParams.location, conBuf));
//strcat(tempCd, ";");
printf("----->%s\n",tempCd);
if ( !(pp=popen(strcat(tempCd, buffer), "r")) ){
free(tempCd);
return 1;
}
while ( (c=fgetc(pp)) != EOF ) {
putc(c, stdout);
dprintf(connectionfd,"%c",c);
fflush(pp);
}
pclose(pp);
free(tempCd);
printf("%d user command: %.*s", connectionfd, count, buffer);
dprintf(connectionfd, "Enter command: ");
}
}
}
}
free(buffer);
}
int search(struct position source, struct position target, int (*blocked)(struct position))
{
struct position current;
current = source;
Dict d;
d = DictCreate();
PQ* q;
q = initQueue();
heapNode hn;
hn.distFromSource = 0;
hn.value = abs(current.x - target.x) + abs(current.y - target.y);
hn.pos = current;
enqueue(hn,q);
DictInsert(d,current.x,current.y,hn.distFromSource);
while(q->size) //stops when priority queue is empty
{
int i;
hn = dequeue(q);
current = hn.pos;
if(foundTarget(current,target)) //hooray! target found!!
{
DictDestroy(d);
destroyQueue(q);
return hn.distFromSource;
}
for(i = 0; i < 4; i++) //for loop explores all the four neighbors defined as 0...3
{
struct position neighbor = createNeighbor(current,i);
int dictSearchDist = DictSearch(d,neighbor.x,neighbor.y);
if(!blocked(neighbor) && dictSearchDist < 0) //add the neighbor to PQ
{
DictInsert(d,neighbor.x,neighbor.y,hn.distFromSource + 1);
heapNode node;
int distToTarget = abs(neighbor.x - target.x) + abs(neighbor.y - target.y); //manhattan distance
node.value = (hn.distFromSource + 1) + distToTarget;
node.pos = neighbor;
node.distFromSource = hn.distFromSource + 1;
enqueue(node,q);
}
else if(dictSearchDist >= 0)
{
if(dictSearchDist > hn.distFromSource + 1)
{
DictInsert(d,neighbor.x,neighbor.y,hn.distFromSource + 1);
heapNode node;
int distToTarget = abs(neighbor.x - target.x) + abs(neighbor.y - target.y); //manhattan distance
node.value = (hn.distFromSource + 1) + distToTarget;
node.pos = neighbor;
node.distFromSource = hn.distFromSource + 1;
enqueue(node,q);
}
}
}
}
DictDestroy(d);
destroyQueue(q);
return NO_PATH;
}
