void dns_found(struct connection *c, int state)
{
int s;
struct conn_info *b = c->newconn;
if (state) {
setcstate(c, S_NO_DNS);
abort_connection(c);
return;
}
if ((s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return;
}
*b->sock = s;
fcntl(s, F_SETFL, O_NONBLOCK);
memset(&b->sa, 0, sizeof(struct sockaddr_in));
b->sa.sin_family = AF_INET;
b->sa.sin_addr.s_addr = b->addr;
b->sa.sin_port = htons(b->port);
if (connect(s, (struct sockaddr *)&b->sa, sizeof b->sa)) {
if (errno != EALREADY && errno != EINPROGRESS) {
#ifdef BEOS
if (errno == EWOULDBLOCK) errno = ETIMEDOUT;
#endif
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return;
}
set_handlers(s, NULL, (void(*)(void *))connected, (void(*)(void *))exception, c);
setcstate(c, S_CONN);
} else {
connected(c);
}
}
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);
}
}
}
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);
}
void write_select(struct connection *c)
{
struct write_buffer *wb;
int wr;
if (!(wb = c->buffer)) {
internal("write socket has no buffer");
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
set_timeout(c);
/*printf("ws: %d\n",wb->len-wb->pos);
for (wr = wb->pos; wr < wb->len; wr++) printf("%c", wb->data[wr]);
printf("-\n");*/
#ifdef HAVE_SSL
if(c->ssl) {
if ((wr = SSL_write(c->ssl, wb->data + wb->pos, wb->len - wb->pos)) <= 0) {
int err;
if ((err = SSL_get_error(c->ssl, wr)) != SSL_ERROR_WANT_WRITE) {
setcstate(c, wr ? (err == SSL_ERROR_SYSCALL ? get_error_from_errno(errno) : S_SSL_ERROR) : S_CANT_WRITE);
if (!wr || err == SSL_ERROR_SYSCALL) retry_connection(c);
else abort_connection(c);
return;
}
else return;
}
} else
#endif
if ((wr = write(wb->sock, wb->data + wb->pos, wb->len - wb->pos)) <= 0) {
#ifdef ATHEOS
/* Workaround for a bug in Syllable */
if (wr && errno == EAGAIN) {
return;
}
#endif
setcstate(c, wr ? get_error_from_errno(errno) : S_CANT_WRITE);
retry_connection(c);
return;
}
/*printf("wr: %d\n", wr);*/
if ((wb->pos += wr) == wb->len) {
void (*f)(struct connection *) = wb->done;
c->buffer = NULL;
set_handlers(wb->sock, NULL, NULL, NULL, NULL);
mem_free(wb);
f(c);
}
}
int get_pasv_socket(struct connection *c, int cc, int *sock, unsigned char *port)
{
int s;
struct sockaddr_in sa;
struct sockaddr_in sb;
socklen_t len = sizeof(sa);
memset(&sa, 0, sizeof sa);
memset(&sb, 0, sizeof sb);
if (getsockname(cc, (struct sockaddr *)&sa, &len)) {
e:
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return -1;
}
if ((s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) goto e;
*sock = s;
fcntl(s, F_SETFL, O_NONBLOCK);
memcpy(&sb, &sa, sizeof(struct sockaddr_in));
sb.sin_port = 0;
if (bind(s, (struct sockaddr *)&sb, sizeof sb)) goto e;
len = sizeof(sa);
if (getsockname(s, (struct sockaddr *)&sa, &len)) goto e;
if (listen(s, 1)) goto e;
memcpy(port, &sa.sin_addr.s_addr, 4);
memcpy(port + 4, &sa.sin_port, 2);
return 0;
}
void ssl_want_read(struct connection *c)
{
struct conn_info *b = c->newconn;
set_timeout(c);
if (c->no_tsl) c->ssl->options |= SSL_OP_NO_TLSv1;
switch (SSL_get_error(c->ssl, SSL_connect(c->ssl))) {
case SSL_ERROR_NONE:
c->newconn = NULL;
b->func(c);
mem_free(b);
break;
case SSL_ERROR_WANT_READ:
set_handlers(*b->sock, (void(*)(void *))ssl_want_read, NULL, (void(*)(void *))exception, c);
break;
case SSL_ERROR_WANT_WRITE:
set_handlers(*b->sock, NULL, (void(*)(void *))ssl_want_read, (void(*)(void *))exception, c);
break;
default:
c->no_tsl++;
setcstate(c, S_SSL_ERROR);
retry_connection(c);
break;
}
}
int publishEvent(Iotfclient *client, char *eventType, char *eventFormat, unsigned char* data, enum QoS qos)
{
int rc = -1;
char publishTopic[strlen(eventType) + strlen(eventFormat) + 16];
sprintf(publishTopic, "iot-2/evt/%s/fmt/%s", eventType, eventFormat);
printf ("publishTopic = %s\n", publishTopic );
MQTTMessage pub;
pub.qos = qos;
pub.retained = '0';
pub.payload = data;
pub.payloadlen = strlen(data);
rc = MQTTPublish(&client->c, publishTopic , &pub);
if(rc != SUCCESS) {
printf("connection lost.. \n");
retry_connection(client);
rc = MQTTPublish(&client->c, publishTopic , &pub);
}
return rc;
}
void connected(struct connection *c)
{
struct conn_info *b = c->newconn;
int err = 0;
socklen_t len = sizeof(int);
if (getsockopt(*b->sock, SOL_SOCKET, SO_ERROR, (void *)&err, &len))
if (!(err = errno)) {
err = -(S_STATE);
goto bla;
}
if (err >= 10000) err -= 10000; /* Why does EMX return so large values? */
if (err > 0) {
bla:
setcstate(c, get_error_from_errno(err));
retry_connection(c);
return;
}
set_timeout(c);
#ifdef HAVE_SSL
if (c->ssl) {
c->ssl = getSSL();
SSL_set_fd(c->ssl, *b->sock);
if (c->no_tsl) c->ssl->options |= SSL_OP_NO_TLSv1;
switch (SSL_get_error(c->ssl, SSL_connect(c->ssl))) {
case SSL_ERROR_WANT_READ:
setcstate(c, S_SSL_NEG);
set_handlers(*b->sock, (void(*)(void *))ssl_want_read, NULL, (void(*)(void *))exception, c);
return;
case SSL_ERROR_WANT_WRITE:
setcstate(c, S_SSL_NEG);
set_handlers(*b->sock, NULL, (void(*)(void *))ssl_want_read, (void(*)(void *))exception, c);
return;
case SSL_ERROR_NONE:
break;
default:
c->no_tsl++;
setcstate(c, S_SSL_ERROR);
retry_connection(c);
return;
}
}
#endif
c->newconn = NULL;
b->func(c);
mem_free(b);
}
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
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);
}
}
void exception(struct connection *c)
{
setcstate(c, S_EXCEPT);
retry_connection(c);
}
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);
}