static void ftp_pass_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) {
setcstate(c, S_FTP_ERROR);
abort_connection(c);
return;
}
if (!g) {
read_from_socket(c, c->sock1, rb, ftp_pass_info);
setcstate(c, S_LOGIN);
return;
}
if (g >= 530 && g < 540) {
setcstate(c, S_FTP_LOGIN);
abort_connection(c);
return;
}
if (g >= 400) {
setcstate(c, S_FTP_UNAVAIL);
abort_connection(c);
return;
}
if (ftp_options.fast_ftp) ftp_retr_file(c, rb);
else ftp_send_retr_req(c, S_GETH);
}
void ftp_got_user_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_got_user_info); return; }
if (g >= 530 && g < 540) { setcstate(c, S_FTP_LOGIN); retry_connection(c); return; }
if (g >= 400) { setcstate(c, S_FTP_UNAVAIL); retry_connection(c); return; }
if (g >= 200 && g < 300) {
if (ftp_options.fast_ftp) ftp_dummy_info(c, rb);
else ftp_send_retr_req(c, S_GETH);
} else {
if (ftp_options.fast_ftp) ftp_pass_info(c, rb);
else {
unsigned char *login;
unsigned char *u;
int logl = 0;
login = init_str();
add_to_str(&login, &logl, "PASS ");
if ((u = get_pass(c->url)) && *u) add_to_str(&login, &logl, u);
else add_to_str(&login, &logl, ftp_options.anon_pass);
if (u) mem_free(u);
add_to_str(&login, &logl, "\r\n");
write_to_socket(c, c->sock1, login, strlen(login), ftp_sent_passwd);
mem_free(login);
setcstate(c, S_LOGIN);
}
}
}
//gcc router.c -o router graph.c socket_open_read_write.c -w message_encode_decode.c -w
//./router port_number
int main(int argc, char *argv[]){
/*Initializing globals*/
memset(message_history_table,0,TABLE_SIZE);
ROUTER_ID=atoi(argv[1]);
message_count=0;
//Setting up socket
int port_number=ROUTER_BASE_PORT+ROUTER_ID;
int my_socket=set_up_socket(port_number);
char *msg_string;
char c;
msg *received_message;
//listening now
listen_again:
initialize_graph();
msg_string=read_from_socket(my_socket);
received_message=decode_message(msg_string);
// free(msg_string);
do_stuff(received_message);
// printf("Press y to continue listening(you may have to press twice for assurance).n to kill the socket and exit.\n");
// c=getchar();
// c=getchar();
//if(c=='y')
goto listen_again;
close(my_socket);
return 0;
}
int main(int argc, char *argv[])
{
if (argc > 1) // devo fare il dump in un file anziché a schermo
dumpFile = argv[1];
// Maschera i segnali
int retval;
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGTERM);
SC_OR_FAIL(pthread_sigmask(SIG_SETMASK, &set, NULL), retval, "Impossibile gestire i segnali in visualizer");
// Installa un handler per il segnale di terminazione
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = terminate;
SC_OR_FAIL(sigaction(SIGUSR2, &sa, NULL), retval, "Impossibile gestire i segnali in visualizer");
unsigned int nrow = UINT_MAX; // Numero di colonne della matrice
unsigned int ncol = UINT_MAX; // Numero di righe della matrice
while (!mustTerminate) {
if (connect_to_socket(&nrow, &ncol) && new_planet_matrix(nrow, ncol) && read_from_socket(nrow, ncol))
print_or_dump_planet_matrix(nrow, ncol);
close(visualizerSocket);
}
DEBUG_PRINT("Visualizer sta per terminare...\n");
return EXIT_SUCCESS;
}
static void
smb_got_data(struct socket *socket, struct read_buffer *rb)
{
int len = rb->length;
struct connection *conn = socket->conn;
if (len < 0) {
abort_connection(conn, connection_state_for_errno(errno));
return;
}
if (!len) {
abort_connection(conn, connection_state(S_OK));
return;
}
socket->state = SOCKET_END_ONCLOSE;
conn->received += len;
if (add_fragment(conn->cached, conn->from, rb->data, len) == 1)
conn->tries = 0;
conn->from += len;
kill_buffer_data(rb, len);
read_from_socket(socket, rb, connection_state(S_TRANS), smb_got_data);
}
void ftp_dummy_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_dummy_info); return; }
ftp_retr_file(c, rb);
}
/* Called when we receive a connection on the listening socket. */
static void
accept_bittorrent_peer_connection(void *____)
{
struct sockaddr_in addr;
int peer_sock;
int addrlen = sizeof(addr);
struct bittorrent_peer_connection *peer;
struct read_buffer *buffer;
peer_sock = accept(bittorrent_socket, (struct sockaddr *) &addr, &addrlen);
if (peer_sock < 0) return;
if (set_nonblocking_fd(peer_sock) < 0) {
close(peer_sock);
return;
}
peer = init_bittorrent_peer_connection(peer_sock);
if (!peer) {
close(peer_sock);
return;
}
peer->remote.initiater = 1;
/* Just return. Failure is handled by alloc_read_buffer(). */
buffer = alloc_read_buffer(peer->socket);
if (!buffer) return;
read_from_socket(peer->socket, buffer, connection_state(S_TRANS),
read_bittorrent_peer_handshake);
add_to_list(bittorrent_peer_connections, peer);
}
void finger_get_response(struct connection *c, struct read_buffer *rb)
{
struct cache_entry *e;
int l;
set_timeout(c);
if (get_cache_entry(c->url, &e)) {
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
c->cache = e;
if (rb->close == 2) {
setcstate(c, S_OK);
finger_end_request(c);
return;
}
l = rb->len;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
c->from += l;
kill_buffer_data(rb, l);
read_from_socket(c, c->sock1, rb, finger_get_response);
setcstate(c, S_TRANS);
}
void ftp_got_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_got_info); return; }
if (g >= 400) { setcstate(c, S_FTP_UNAVAIL); retry_connection(c); return; }
ftp_got_user_info(c, rb);
}
void finger_sent_request(struct connection *c)
{
struct read_buffer *rb;
set_timeout(c);
if (!(rb = alloc_read_buffer(c))) return;
rb->close = 1;
read_from_socket(c, c->sock1, rb, finger_get_response);
}
void http_get_header(struct connection *c)
{
struct read_buffer *rb;
set_timeout(c);
if (!(rb = alloc_read_buffer(c))) return;
rb->close = 1;
read_from_socket(c, c->sock1, rb, http_got_header);
}
static void
read_response_from_socket(struct socket *socket)
{
struct read_buffer *rb = alloc_read_buffer(socket);
if (rb) read_from_socket(socket, rb, connection_state(S_SENT),
socket->read_done);
}
static void ftp_get_banner(struct connection *c)
{
struct read_buffer *rb;
set_timeout(c);
setcstate(c, S_SENT);
if (!(rb = alloc_read_buffer(c))) return;
read_from_socket(c, c->sock1, rb, ftp_got_banner);
}
static void ftp_logged(struct connection *c)
{
struct read_buffer *rb;
if (!(rb = alloc_read_buffer(c))) return;
if (!ftp_options.fast_ftp) {
ftp_got_user_info(c, rb);
return;
}
read_from_socket(c, c->sock1, rb, ftp_got_info);
}
int32_t destiny_socket_recv(int s, void *buf, uint32_t len, int flags)
{
/* Variables */
uint8_t read_bytes;
msg_t m_recv, m_send;
socket_internal_t *current_int_tcp_socket;
/* Check if socket exists */
if (!is_tcp_socket(s)) {
printf("INFO: NO TCP SOCKET!\n");
return -1;
}
current_int_tcp_socket = get_socket(s);
/* Setting Thread PID */
current_int_tcp_socket->recv_pid = thread_getpid();
if (current_int_tcp_socket->tcp_input_buffer_end > 0) {
return read_from_socket(current_int_tcp_socket, buf, len);
}
msg_receive(&m_recv);
if ((exists_socket(s)) && (current_int_tcp_socket->tcp_input_buffer_end > 0)) {
read_bytes = read_from_socket(current_int_tcp_socket, buf, len);
net_msg_reply(&m_recv, &m_send, UNDEFINED);
return read_bytes;
}
/* Received FIN */
if (m_recv.type == CLOSE_CONN) {
/* Sent FIN_ACK, wait for ACK */
msg_receive(&m_recv);
/* Received ACK, return with closed socket!*/
return -1;
}
/* Received Last ACK (connection closed) or no data to read yet */
return -1;
}
static int
handle_events(v_io_event_t *ev)
{
v_connection_t *c;
int res;
v_string_t *data;
c = ev->data;
switch(c->status) {
case V_CONNECTION_READ:
if (read_from_socket(c) == V_ERR) {
return V_ERR;
}
if (v_stream_length(c->buf) >= c->read_count) {
data = v_stream_read(c->buf, c->read_count);
if (data == NULL) {
v_close_connection(c);
return V_ERR;
}
return v_method_call(c->read_callback, 1, data);
}
return v_io_add(c->event, V_IO_READ, handle_events);
case V_CONNECTION_READ_UNTIL:
if (read_from_socket(c) == V_ERR) {
return V_ERR;
}
res = v_stream_read_until(c->buf, &data, c->read_delimeter.data, c->read_delimeter.len, c->read_until_max);
if (res == V_OK) {
return v_method_call(c->read_callback, 1, data);
} else if (res == V_AGAIN) {
return v_io_add(c->event, V_IO_READ, handle_events);
}
v_close_connection(c);
return V_ERR;
case V_IO_WRITE:
case V_IO_CLOSE:
return v_method_call(c->write_callback, 0, NULL);
}
return V_OK;
}
/**
* client_manager
*
* Thread function to manage client connections.
*
* @param data Thread data for the function
*/
void* client_manager(void *data) {
int nready;
client *c = NULL;
node *n = NULL;
server *s = (server *)data;
/* set up as a tcp server */
server_init(s);
while (running) {
pthread_mutex_lock(&s->dataLock);
FD_ZERO(&s->allset);
FD_SET(s->listen_sd, &s->allset);
/* loop through all possible socket connections and add
* them to fd_set */
for (n = s->client_list->link; n != NULL; n = n->next) {
c = (client *)n->data;
FD_SET(c->fd, &s->allset);
if (c->fd > s->maxfd)
s->maxfd = c->fd;
}
/* Monitor sockets for any activity of new connections or data transfer */
nready = select(s->maxfd + 1, &s->allset, NULL, NULL, NULL);
pthread_mutex_unlock(&s->dataLock);
if (nready < 0) {
/* Something interrupted the call, cause EINTR, continue */
if (errno == EINTR)
continue;
else
SystemFatal("Select() Error\n");
}
else if (nready == 0) {
/* nothing to read, continue */
continue;
}
else {
/* There is an activity on one or more sockets. */
read_from_socket(s);
}
}
fprintf(stdout, "Exiting the client manager\n");
close(s->listen_sd);
free(s);
pthread_exit(NULL);
}
void read_select(struct connection *c)
{
struct read_buffer *rb;
int rd;
if (!(rb = c->buffer)) {
internal("read socket has no buffer");
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
set_handlers(rb->sock, NULL, NULL, NULL, NULL);
if ((unsigned)rb->len > MAXINT - sizeof(struct read_buffer) - READ_SIZE) overalloc();
rb = mem_realloc(rb, sizeof(struct read_buffer) + rb->len + READ_SIZE);
c->buffer = rb;
#ifdef HAVE_SSL
if(c->ssl) {
if ((rd = SSL_read(c->ssl, rb->data + rb->len, READ_SIZE)) <= 0) {
int err;
if ((err = SSL_get_error(c->ssl, rd)) == SSL_ERROR_WANT_READ) {
read_from_socket(c, rb->sock, rb, rb->done);
return;
}
if (rb->close && !rd) {
rb->close = 2;
rb->done(c, rb);
return;
}
setcstate(c, rd ? (err == SSL_ERROR_SYSCALL ? get_error_from_errno(errno) : S_SSL_ERROR) : S_CANT_READ);
/*mem_free(rb);*/
if (!rd || err == SSL_ERROR_SYSCALL) retry_connection(c);
else abort_connection(c);
return;
}
} else
#endif
if ((rd = read(rb->sock, rb->data + rb->len, READ_SIZE)) <= 0) {
if (rb->close && !rd) {
rb->close = 2;
rb->done(c, rb);
return;
}
setcstate(c, rd ? get_error_from_errno(errno) : S_CANT_READ);
/*mem_free(rb);*/
retry_connection(c);
return;
}
log_data(rb->data + rb->len, rd);
rb->len += rd;
rb->done(c, rb);
}
static void *
slave_thread(void *arg)
{
struct client_data *from_info; /* identity of connected client */
int bytes_read; /* number of bytes read from socket */
int bytes_written; /* number of bytes written to socket */
char *buffer; /* buffer for socket read/write data */
/* get connection data from argument pointer */
from_info = (struct client_data *)(arg);
buffer = (char *)malloc(BUFFER_SIZE);
if (buffer == NULL) {
fprintf(stderr, "ERROR: cannot allocate memory for buffer\n");
exit(1);
} /* end if */
printf("Connection from host %s (%s), port %d.\n",
from_info->name, from_info->addr, from_info->port);
do {
bytes_read = read_from_socket(from_info->sd, buffer, BUFFER_SIZE, 100);
if (bytes_read > 0) {
bytes_written = write_to_socket(from_info->sd, buffer, bytes_read, 100);
} /* end if */
} while (bytes_read > 0);
close(from_info->sd);
printf("Connection closed for host %s (%s), port %d.\n",
from_info->name, from_info->addr, from_info->port);
/*
* Deallocate memory
*/
free(buffer);
free(from_info);
pthread_mutex_lock(&slave_thread_info.mutex);
slave_thread_info.num_active--;
if (slave_thread_info.num_active == (MAX_NUM_THREADS - 1)) {
pthread_cond_signal(&slave_thread_info.thread_exit_cv);
} /* end if */
pthread_mutex_unlock(&slave_thread_info.mutex);
pthread_exit(NULL);
} /* end of slave_thread */
static void
get_request(struct connection *conn)
{
struct read_buffer *rb = alloc_read_buffer(conn->socket);
if (!rb) return;
memcpy(rb->data, "HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n", 45);
rb->length = 45;
rb->freespace -= 45;
conn->unrestartable = 1;
conn->socket->state = SOCKET_END_ONCLOSE;
read_from_socket(conn->socket, rb, connection_state(S_SENT),
http_got_header);
}
static void
read_from_stdin(struct connection *conn)
{
struct read_buffer *rb = alloc_read_buffer(conn->socket);
if (!rb) return;
memcpy(rb->data, "HTTP/1.0 200 OK\r\n\r\n", 19);
rb->length = 19;
rb->freespace -= 19;
conn->unrestartable = 1;
conn->socket->state = SOCKET_END_ONCLOSE;
read_from_socket(conn->socket, rb, connection_state(S_SENT),
check_if_closed);
}
int main(void)
{
struct data *d = malloc(sizeof(*d));
struct addrinfo *addrinfo;
struct io_listener *l;
int fd, status;
/* This is how many tests you plan to run */
plan_tests(9);
d->state = 0;
d->bytes = 1024*1024;
d->buf = malloc(d->bytes);
memset(d->buf, 'a', d->bytes);
fd = make_listen_fd(PORT, &addrinfo);
ok1(fd >= 0);
l = io_new_listener(fd, init_conn, d);
ok1(l);
fflush(stdout);
if (!fork()) {
io_close_listener(l);
read_from_socket(d->bytes, addrinfo);
freeaddrinfo(addrinfo);
free(d->buf);
free(d);
exit(0);
}
ok1(io_loop() == d);
ok1(d->state == 2);
ok1(wait(&status));
ok1(WIFEXITED(status));
ok1(WEXITSTATUS(status) == 0);
freeaddrinfo(addrinfo);
free(d->buf);
free(d);
io_close_listener(l);
/* This exits depending on whether all tests passed */
return exit_status();
}
char*
send_proc_to_local_server(struct proc_process p) {
struct sockaddr_un them;
int sender = socket(AF_UNIX, SOCK_STREAM, 0);
if (sender < 0) {
printf("Error creating connection to server\n");
return NULL;
}
them.sun_family = AF_UNIX;
strcpy(them.sun_path,LOCAL_SERVER_SOCK);
if (connect(sender,(struct sockaddr *)&them,sizeof(them)) < 0) {
printf("Error connecting to server\n");
return NULL;
}
unsigned char type = 's';
write_to_socket(&sender,&type,sizeof(char));
write_process(p,&sender,write_to_socket);
char* id = malloc(SIZE_OF_ID*sizeof(char));;
read_from_socket(&sender,id,SIZE_OF_ID*sizeof(char));
return id;
}
int main(int argc, char *argv[] ){
int listenfd = 0, connfd = 0;
struct sockaddr_in serv_addr;
char sendBuff[5000];
time_t ticks;
listenfd = socket(AF_INET, SOCK_STREAM, 0);
memset(&serv_addr, '0', sizeof(serv_addr));
memset(sendBuff, '0', sizeof(sendBuff));
serv_addr.sin_family = AF_INET; // should be always set to this
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY); //ip addr of a host server
serv_addr.sin_port = htons(5000); // Port number
bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
listen(listenfd, 10);
while(1){
connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);
if(connfd < 0) {
error("Error in server.");
}
ticks = time(NULL); // what is this
snprintf(sendBuff, sizeof(sendBuff), "This is SigUMT server. Commands: send \n");
write(connfd, sendBuff, strlen(sendBuff));
char* ptr = malloc(15);
read_from_socket(connfd, ptr);
close(connfd);
sleep(1);
}
}
static void finger_get_response(struct connection *c, struct read_buffer *rb)
{
int l;
int a;
set_timeout(c);
if (!c->cache) {
if (get_cache_entry(c->url, &c->cache)) {
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
c->cache->refcount--;
}
if (rb->close == 2) {
finger_end_request(c, S__OK);
return;
}
l = rb->len;
if ((off_t)(0UL + c->from + l) < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
a = add_fragment(c->cache, c->from, rb->data, l);
if (a < 0) {
setcstate(c, a);
abort_connection(c);
return;
}
if (a == 1) c->tries = 0;
c->from += l;
kill_buffer_data(rb, l);
read_from_socket(c, c->sock1, rb, finger_get_response);
setcstate(c, S_TRANS);
}
void read_http_data(struct connection *c, struct read_buffer *rb)
{
struct http_connection_info *info = c->info;
set_timeout(c);
if (rb->close == 2) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
if (info->length != -2) {
int l = rb->len;
if (info->length >= 0 && info->length < l) l = info->length;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
if (info->length >= 0) info->length -= l;
c->from += l;
kill_buffer_data(rb, l);
if (!info->length && !rb->close) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
} else {
next_chunk:
if (info->chunk_remaining == -2) {
int l;
if ((l = is_line_in_buffer(rb))) {
if (l == -1) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
kill_buffer_data(rb, l);
if (l <= 2) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
goto next_chunk;
}
} else if (info->chunk_remaining == -1) {
int l;
if ((l = is_line_in_buffer(rb))) {
unsigned char *de;
long n = 0; /* warning, go away */
if (l != -1) n = strtol(rb->data, (char **)(void *)&de, 16);
if (l == -1 || n < 0 || n >= MAXINT || de == rb->data) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
kill_buffer_data(rb, l);
if (!(info->chunk_remaining = n)) info->chunk_remaining = -2;
goto next_chunk;
}
} else {
int l = info->chunk_remaining;
if (l > rb->len) l = rb->len;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
info->chunk_remaining -= l;
c->from += l;
kill_buffer_data(rb, l);
if (!info->chunk_remaining && rb->len >= 1) {
if (rb->data[0] == 10) kill_buffer_data(rb, 1);
else {
if (rb->data[0] != 13 || (rb->len >= 2 && rb->data[1] != 10)) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (rb->len < 2) goto read_more;
kill_buffer_data(rb, 2);
}
info->chunk_remaining = -1;
goto next_chunk;
}
}
}
read_more:
read_from_socket(c, c->sock1, rb, read_http_data);
setcstate(c, S_TRANS);
}
void
smb_protocol_handler(struct connection *conn)
{
int smb_pipe[2] = { -1, -1 };
int header_pipe[2] = { -1, -1 };
pid_t cpid;
if (c_pipe(smb_pipe) || c_pipe(header_pipe)) {
int s_errno = errno;
if (smb_pipe[0] >= 0) close(smb_pipe[0]);
if (smb_pipe[1] >= 0) close(smb_pipe[1]);
if (header_pipe[0] >= 0) close(header_pipe[0]);
if (header_pipe[1] >= 0) close(header_pipe[1]);
abort_connection(conn, connection_state_for_errno(s_errno));
return;
}
conn->from = 0;
conn->unrestartable = 1;
find_auth(conn->uri); /* remember username and password */
cpid = fork();
if (cpid == -1) {
int s_errno = errno;
close(smb_pipe[0]);
close(smb_pipe[1]);
close(header_pipe[0]);
close(header_pipe[1]);
retry_connection(conn, connection_state_for_errno(s_errno));
return;
}
if (!cpid) {
dup2(open("/dev/null", O_RDONLY), 0);
close(1);
close(2);
data_out = fdopen(smb_pipe[1], "w");
header_out = fdopen(header_pipe[1], "w");
if (!data_out || !header_out) exit(1);
close(smb_pipe[0]);
close(header_pipe[0]);
/* There may be outgoing data in stdio buffers
* inherited from the parent process. The parent
* process is going to write this data, so the child
* process must not do that. Closing the file
* descriptors ensures this.
*
* FIXME: If something opens more files and gets the
* same file descriptors and does not close them
* before exit(), then stdio may attempt to write the
* buffers to the wrong files. This might happen for
* example if libsmbclient calls syslog(). */
close_all_fds_but_two(smb_pipe[1], header_pipe[1]);
do_smb(conn);
} else {
struct read_buffer *buf2;
conn->data_socket->fd = smb_pipe[0];
conn->socket->fd = header_pipe[0];
set_nonblocking_fd(conn->data_socket->fd);
set_nonblocking_fd(conn->socket->fd);
close(smb_pipe[1]);
close(header_pipe[1]);
buf2 = alloc_read_buffer(conn->socket);
if (!buf2) {
close_socket(conn->data_socket);
close_socket(conn->socket);
abort_connection(conn, connection_state(S_OUT_OF_MEM));
return;
}
read_from_socket(conn->socket, buf2,
connection_state(S_CONN), smb_got_header);
}
}
static void
smb_got_header(struct socket *socket, struct read_buffer *rb)
{
struct connection *conn = socket->conn;
struct read_buffer *buf;
int error = 0;
conn->cached = get_cache_entry(conn->uri);
if (!conn->cached) {
/* Even though these are pipes rather than real
* sockets, call close_socket instead of close, to
* ensure that abort_connection won't try to close the
* file descriptors again. (Could we skip the calls
* and assume abort_connection will do them?) */
close_socket(socket);
close_socket(conn->data_socket);
abort_connection(conn, connection_state(S_OUT_OF_MEM));
return;
}
socket->state = SOCKET_END_ONCLOSE;
if (rb->length > 0) {
unsigned char *ctype = memacpy(rb->data, rb->length);
if (ctype && *ctype) {
if (!strcmp(ctype, "text/x-error")) {
error = 1;
mem_free(ctype);
} else {
if (ctype[0] >= '0' && ctype[0] <= '9') {
#ifdef HAVE_ATOLL
conn->est_length = (off_t)atoll(ctype);
#else
conn->est_length = (off_t)atol(ctype);
#endif
mem_free(ctype);
/* avoid error */
if (!conn->est_length) {
abort_connection(conn, connection_state(S_OK));
return;
}
}
else mem_free_set(&conn->cached->content_type, ctype);
}
} else {
mem_free_if(ctype);
}
}
buf = alloc_read_buffer(conn->data_socket);
if (!buf) {
close_socket(socket);
close_socket(conn->data_socket);
abort_connection(conn, connection_state(S_OUT_OF_MEM));
return;
}
if (error) {
mem_free_set(&conn->cached->content_type, stracpy("text/html"));
read_from_socket(conn->data_socket, buf,
connection_state(S_CONN), smb_got_error);
} else {
read_from_socket(conn->data_socket, buf,
connection_state(S_CONN), smb_got_data);
}
}
void http_got_header(struct connection *c, struct read_buffer *rb)
{
int cf;
int state = c->state != S_PROC ? S_GETH : S_PROC;
unsigned char *head;
unsigned char *cookie, *ch;
int a, h, version;
unsigned char *d;
struct cache_entry *e;
struct http_connection_info *info;
unsigned char *host = upcase(c->url[0]) != 'P' ? c->url : get_url_data(c->url);
set_timeout(c);
info = c->info;
if (rb->close == 2) {
unsigned char *h;
if (!c->tries && (h = get_host_name(host))) {
if (info->bl_flags & BL_NO_CHARSET) {
del_blacklist_entry(h, BL_NO_CHARSET);
} else {
add_blacklist_entry(h, BL_NO_CHARSET);
c->tries = -1;
}
mem_free(h);
}
setcstate(c, S_CANT_READ);
retry_connection(c);
return;
}
rb->close = 0;
again:
if ((a = get_header(rb)) == -1) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (!a) {
read_from_socket(c, c->sock1, rb, http_got_header);
setcstate(c, state);
return;
}
if (a != -2) {
head = mem_alloc(a + 1);
memcpy(head, rb->data, a);
head[a] = 0;
kill_buffer_data(rb, a);
} else {
head = stracpy("HTTP/0.9 200 OK\r\nContent-Type: text/html\r\n\r\n");
}
if (get_http_code(head, &h, &version) || h == 101) {
mem_free(head);
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (check_http_server_bugs(host, c->info, head) && is_connection_restartable(c)) {
mem_free(head);
setcstate(c, S_RESTART);
retry_connection(c);
return;
}
ch = head;
while ((cookie = parse_http_header(ch, "Set-Cookie", &ch))) {
unsigned char *host = upcase(c->url[0]) != 'P' ? c->url : get_url_data(c->url);
set_cookie(NULL, host, cookie);
mem_free(cookie);
}
if (h == 100) {
mem_free(head);
state = S_PROC;
goto again;
}
if (h < 200) {
mem_free(head);
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (h == 204) {
mem_free(head);
setcstate(c, S_HTTP_204);
http_end_request(c, 0);
return;
}
if (h == 304) {
mem_free(head);
setcstate(c, S_OK);
http_end_request(c, 1);
return;
}
if ((h == 500 || h == 502 || h == 503 || h == 504) && http_bugs.retry_internal_errors && is_connection_restartable(c)) {
/* !!! FIXME: wait some time ... */
mem_free(head);
setcstate(c, S_RESTART);
retry_connection(c);
return;
}
if (!c->cache && get_cache_entry(c->url, &c->cache)) {
mem_free(head);
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
e = c->cache;
e->http_code = h;
if (e->head) mem_free(e->head);
e->head = head;
if ((d = parse_http_header(head, "Expires", NULL))) {
time_t t = parse_http_date(d);
if (t && e->expire_time != 1) e->expire_time = t;
mem_free(d);
}
if ((d = parse_http_header(head, "Pragma", NULL))) {
if (!casecmp(d, "no-cache", 8)) e->expire_time = 1;
mem_free(d);
}
if ((d = parse_http_header(head, "Cache-Control", NULL))) {
char *f = d;
while (1) {
while (*f && (*f == ' ' || *f == ',')) f++;
if (!*f) break;
if (!casecmp(f, "no-cache", 8) || !casecmp(f, "must-revalidate", 15)) {
e->expire_time = 1;
}
if (!casecmp(f, "max-age=", 8)) {
if (e->expire_time != 1) e->expire_time = time(NULL) + atoi(f + 8);
}
while (*f && *f != ',') f++;
}
mem_free(d);
}
#ifdef HAVE_SSL
if (c->ssl) {
int l = 0;
if (e->ssl_info) mem_free(e->ssl_info);
e->ssl_info = init_str();
add_num_to_str(&e->ssl_info, &l, SSL_get_cipher_bits(c->ssl, NULL));
add_to_str(&e->ssl_info, &l, "-bit ");
add_to_str(&e->ssl_info, &l, SSL_get_cipher_version(c->ssl));
add_to_str(&e->ssl_info, &l, " ");
add_to_str(&e->ssl_info, &l, (unsigned char *)SSL_get_cipher_name(c->ssl));
}
#endif
if (e->redirect) mem_free(e->redirect), e->redirect = NULL;
if (h == 301 || h == 302 || h == 303 || h == 307) {
if ((h == 302 || h == 307) && !e->expire_time) e->expire_time = 1;
if ((d = parse_http_header(e->head, "Location", NULL))) {
unsigned char *user, *ins;
unsigned char *newuser, *newpassword;
if (!parse_url(d, NULL, &user, NULL, NULL, NULL, &ins, NULL, NULL, NULL, NULL, NULL, NULL) && !user && ins && (newuser = get_user_name(host))) {
if (*newuser) {
int ins_off = ins - d;
newpassword = get_pass(host);
if (!newpassword) newpassword = stracpy("");
add_to_strn(&newuser, ":");
add_to_strn(&newuser, newpassword);
add_to_strn(&newuser, "@");
extend_str(&d, strlen(newuser));
ins = d + ins_off;
memmove(ins + strlen(newuser), ins, strlen(ins) + 1);
memcpy(ins, newuser, strlen(newuser));
mem_free(newpassword);
}
mem_free(newuser);
}
if (e->redirect) mem_free(e->redirect);
e->redirect = d;
e->redirect_get = h == 303;
}
}
if (!e->expire_time && strchr(c->url, POST_CHAR)) e->expire_time = 1;
info->close = 0;
info->length = -1;
info->version = version;
if ((d = parse_http_header(e->head, "Connection", NULL)) || (d = parse_http_header(e->head, "Proxy-Connection", NULL))) {
if (!strcasecmp(d, "close")) info->close = 1;
mem_free(d);
} else if (version < 11) info->close = 1;
cf = c->from;
c->from = 0;
if ((d = parse_http_header(e->head, "Content-Range", NULL))) {
if (strlen(d) > 6) {
d[5] = 0;
if (!(strcasecmp(d, "bytes")) && d[6] >= '0' && d[6] <= '9') {
#if defined(HAVE_STRTOLL)
long long f = strtoll(d + 6, NULL, 10);
#elif defined(HAVE_STRTOQ)
longlong f = strtoq(d + 6, NULL, 10);
#else
long f = strtol(d + 6, NULL, 10);
if (f == MAXLONG) f = -1;
#endif
if (f >= 0 && (off_t)f >= 0 && (off_t)f == f) c->from = f;
}
}
mem_free(d);
}
if (cf && !c->from && !c->unrestartable) c->unrestartable = 1;
if (c->from > cf || c->from < 0) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if ((d = parse_http_header(e->head, "Content-Length", NULL))) {
unsigned char *ep;
#if defined(HAVE_STRTOLL)
long long l = strtoll(d, (char **)(void *)&ep, 10);
#elif defined(HAVE_STRTOQ)
longlong l = strtoq(d, (char **)(void *)&ep, 10);
#else
long l = strtol(d, (char **)(void *)&ep, 10);
if (l == MAXLONG) l = -1;
#endif
if (!*ep && l >= 0 && (off_t)l >= 0 && (off_t)l == l) {
if (!info->close || version >= 11) info->length = l;
if (c->from + l >= 0) c->est_length = c->from + l;
}
mem_free(d);
}
if ((d = parse_http_header(e->head, "Accept-Ranges", NULL))) {
if (!strcasecmp(d, "none") && !c->unrestartable) c->unrestartable = 1;
mem_free(d);
} else {
if (!c->unrestartable && !c->from) c->unrestartable = 1;
}
if (info->bl_flags & BL_NO_RANGE && !c->unrestartable) c->unrestartable = 1;
if ((d = parse_http_header(e->head, "Transfer-Encoding", NULL))) {
if (!strcasecmp(d, "chunked")) {
info->length = -2;
info->chunk_remaining = -1;
}
mem_free(d);
}
if (!info->close && info->length == -1) info->close = 1;
if ((d = parse_http_header(e->head, "Last-Modified", NULL))) {
if (e->last_modified && strcasecmp(e->last_modified, d)) {
delete_entry_content(e);
if (c->from) {
c->from = 0;
mem_free(d);
setcstate(c, S_MODIFIED);
retry_connection(c);
return;
}
}
if (!e->last_modified) e->last_modified = d;
else mem_free(d);
}
if (!e->last_modified && (d = parse_http_header(e->head, "Date", NULL)))
e->last_modified = d;
if (info->length == -1 || (version < 11 && info->close)) rb->close = 1;
read_http_data(c, rb);
}
int
main(int argc, const char **argv)
{
unsigned char proxy_header[MAX_HEADER_SIZE + 1];
ssize_t n = 0;
int address_len = 0;
if (argc == 1)
n = read(STDIN_FILENO, proxy_header, MAX_HEADER_SIZE);
else if (argc == 2)
n = read_from_socket(argv[1], proxy_header, MAX_HEADER_SIZE);
else {
fprintf(stderr, "Usage: parse_proxy_v2 [port]\n");
return (1);
}
if (n < 16) {
printf("ERROR:\tread too few bytes.\n");
return (1);
}
proxy_header[n] = '\0';
if (strncmp("PROXY TCP", (char *)proxy_header, 9) == 0) {
/* PROXY version 1 over TCP */
fprintf(stdout,
"ERROR:\tPROXY v1 parsing not supported in this tool.\n");
return (1);
} else if (memcmp(PROXY_V2_HEADER, proxy_header, 12) != 0) {
printf("ERROR:\tNot a valid PROXY header\n");
return (1);
}
printf("PROXY v2 detected.\n");
switch (proxy_header[12]) {
case 0x20:
printf("ERROR:\tLOCAL connection\n");
return (1);
case 0x21:
printf("Connection:\tPROXYed connection detected\n");
break;
default:
printf("ERROR:\t13th byte has illegal value %d\n",
(int)proxy_header[12]);
return (1);
}
switch (proxy_header[13]) {
case 0x00:
printf("ERROR:\tProtocol:\tUnspecified/unsupported\n");
return (1);
case 0x11:
printf("Protocol:\tTCP over IPv4\n");
address_len = 12;
break;
case 0x12:
printf("Protocol:\tUDP over IPv4\n");
printf("ERROR:\tProtocol unsupported in hitch seen\n");
address_len = 12;
break;
case 0x21:
printf("Protocol:\tTCP over IPv6\n");
address_len = 36;
break;
case 0x22:
printf("Protocol:\tUDP over IPv6\n");
printf("ERROR:\tProtocol unsupported in hitch\n");
address_len = 36;
break;
case 0x31:
printf("Protocol:\tUNIX stream\n");
address_len = 216;
break;
case 0x32:
printf("Protocol:\tUNIX datagram\n");
printf("ERROR:\tProtocol unsupported in hitch\n");
address_len = 216;
break;
default:
printf("ERROR:\t14th byte has illegal value %d\n",
(int)proxy_header[13]);
return (1);
}
int additional_len = (proxy_header[14] << 8) + proxy_header[15];
if (additional_len < address_len) {
printf("ERROR:\tThe the total header length %d does"
" not leave room for the addresses\n",
additional_len + 16);
return (1);
}
if (additional_len + 16 > n) {
printf("ERROR:\tToo few bytes was read; %zd\n", n);
return (1);
}
if (address_len == 12)
print_addr_with_ports(AF_INET, 4, proxy_header + 16);
else if (address_len == 36)
print_addr_with_ports(AF_INET6, 16, proxy_header + 16);
else {
printf("ERROR:\tPrinting of UNIX socket addresses"
" not implemented.\n");
}
if (address_len < additional_len)
return print_extensions(proxy_header + 16 + address_len,
additional_len - address_len);
return (0);
}