static int
parse_backtick(char **word, size_t * word_length, size_t * max_length,
const char *words, size_t * offset, int flags,
wordexp_t * pwordexp, const char *ifs,
const char *ifs_white)
{
/* We are poised just after "`" */
int error;
int squoting = 0;
size_t comm_length;
size_t comm_maxlen;
char *comm = w_newword(&comm_length, &comm_maxlen);
for (; words[*offset]; ++(*offset)) {
switch (words[*offset]) {
case '`':
/* Go -- give the script to the shell */
error = exec_comm(comm, word, word_length, max_length, flags,
pwordexp, ifs, ifs_white);
free(comm);
return error;
case '\\':
if (squoting) {
error = parse_qtd_backslash(&comm, &comm_length, &comm_maxlen,
words, offset);
if (error) {
free(comm);
return error;
}
break;
}
++(*offset);
error = parse_backslash(&comm, &comm_length, &comm_maxlen, words,
offset);
if (error) {
free(comm);
return error;
}
break;
case '\'':
squoting = 1 - squoting;
default:
comm = w_addchar(comm, &comm_length, &comm_maxlen,
words[*offset]);
if (comm == NULL)
return WRDE_NOSPACE;
}
}
/* Premature end */
free(comm);
return WRDE_SYNTAX;
}
static int
parse_comm(char **word, size_t * word_length, size_t * max_length,
const char *words, size_t * offset, int flags,
wordexp_t * pwordexp, const char *ifs, const char *ifs_white)
{
/* We are poised just after "$(" */
int paren_depth = 1;
int error = 0;
int quoted = 0; /* 1 for singly-quoted, 2 for doubly-quoted */
size_t comm_length;
size_t comm_maxlen;
char *comm = w_newword(&comm_length, &comm_maxlen);
for (; words[*offset]; ++(*offset)) {
switch (words[*offset]) {
case '\'':
if (quoted == 0)
quoted = 1;
else if (quoted == 1)
quoted = 0;
break;
case '"':
if (quoted == 0)
quoted = 2;
else if (quoted == 2)
quoted = 0;
break;
case ')':
if (!quoted && --paren_depth == 0) {
/* Go -- give script to the shell */
if (comm) {
error = exec_comm(comm, word, word_length, max_length,
flags, pwordexp, ifs, ifs_white);
free(comm);
}
return error;
}
/* This is just part of the script */
break;
case '(':
if (!quoted)
++paren_depth;
}
comm = w_addchar(comm, &comm_length, &comm_maxlen, words[*offset]);
if (comm == NULL)
return WRDE_NOSPACE;
}
/* Premature end */
free(comm);
return WRDE_SYNTAX;
}
void main_loop(void)
{
int i,n,addr;
unsigned int sock_size;
fd_set readfds, testfds;
char cmd[CMD_LEN],buffer[1000];
struct sockaddr_in sa;
signal(SIGPIPE,SIG_IGN);
signal(SIGCHLD,waitchild);
/* server init */
printf("Starting the server ...\n");
if ((sd_server=socket(AF_INET,SOCK_STREAM,0)) < 0) {
perror("socket");
exit(1);
}
sock_size=sizeof(struct sockaddr_in);
memset(&sa,0,sock_size);
sa.sin_family=AF_INET;
sa.sin_port=htons(serverport);
addr=INADDR_ANY;
memcpy(&sa.sin_addr.s_addr,&addr,sizeof(int));
if (bind(sd_server,(struct sockaddr *)&sa,sock_size)<0) {
perror("bind");
exit(1);
}
//printf("binded to socket\n");
if (listen(sd_server,5)<0) {
perror("listen");
exit(1);
}
init_conn();
//printf("OK\n");
//recv(sd_server,buffer,strlen(buffer),0);
//printf("%s",buffer);
//prompt();
/*FD_ZERO(&readfds);
FD_SET(1,&readfds);
FD_SET(sd_server,&readfds);
*/
stop = 0;
while (!stop) {
testfds = readfds;
for (i = 0; i < nb_users; i++)
{
if (clients[i]->sock)
FD_SET(clients[i]->sock,&testfds);
exec_comm(i);
}
//selectoin an active descriptor
if( 0 > (n = select(max_user_sock, &testfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0))){
// if (errno!=EINTR || n != -1)
// exit(1);
}
//reading information from clients
/*for (i = 0; i <= nb_users; i++) {
printf("clients are there\n");
if (clients[i]->sock) {
//if (FD_ISSET(clients[i]->sock,&testfds))
//exec_comm(i); //i - number of client in the client table
prompt();
}
}*/
}
close(sd_server);
printf("server stops\n");
}
