* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
+#include <sys/socket.h> /* netinet/in.h needs it */
#include <netinet/in.h>
#include <net/if.h>
+#include <sys/un.h>
#include "libbb.h"
void FAST_FUNC setsockopt_reuseaddr(int fd)
int r;
struct ifreq ifr;
strncpy_IFNAMSIZ(ifr.ifr_name, iface);
- /* Actually, ifr_name is at offset 0, and in practice
+ /* NB: passing (iface, strlen(iface) + 1) does not work!
+ * (maybe it works on _some_ kernels, but not on 2.6.26)
+ * Actually, ifr_name is at offset 0, and in practice
* just giving char[IFNAMSIZ] instead of struct ifreq works too.
* But just in case it's not true on some obscure arch... */
r = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr));
return r;
}
+len_and_sockaddr* FAST_FUNC get_sock_lsa(int fd)
+{
+ len_and_sockaddr lsa;
+ len_and_sockaddr *lsa_ptr;
+
+ lsa.len = LSA_SIZEOF_SA;
+ if (getsockname(fd, &lsa.u.sa, &lsa.len) != 0)
+ return NULL;
+
+ lsa_ptr = xzalloc(LSA_LEN_SIZE + lsa.len);
+ if (lsa.len > LSA_SIZEOF_SA) { /* rarely (if ever) happens */
+ lsa_ptr->len = lsa.len;
+ getsockname(fd, &lsa_ptr->u.sa, &lsa_ptr->len);
+ } else {
+ memcpy(lsa_ptr, &lsa, LSA_LEN_SIZE + lsa.len);
+ }
+ return lsa_ptr;
+}
void FAST_FUNC xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen)
{
close(s);
if (s_addr->sa_family == AF_INET)
bb_perror_msg_and_die("%s (%s)",
- "cannot connect to remote host",
+ "can't connect to remote host",
inet_ntoa(((struct sockaddr_in *)s_addr)->sin_addr));
- bb_perror_msg_and_die("cannot connect to remote host");
+ bb_perror_msg_and_die("can't connect to remote host");
}
}
/* Return port number for a service.
* If "port" is a number use it as the port.
- * If "port" is a name it is looked up in /etc/services, if it isnt found return
- * default_port */
+ * If "port" is a name it is looked up in /etc/services,
+ * if it isnt found return default_port
+ */
unsigned FAST_FUNC bb_lookup_port(const char *port, const char *protocol, unsigned default_port)
{
unsigned port_nr = default_port;
* port: if neither of above specifies port # */
static len_and_sockaddr* str2sockaddr(
const char *host, int port,
-USE_FEATURE_IPV6(sa_family_t af,)
+IF_FEATURE_IPV6(sa_family_t af,)
int ai_flags)
{
int rc;
- len_and_sockaddr *r = NULL;
+ len_and_sockaddr *r;
struct addrinfo *result = NULL;
struct addrinfo *used_res;
const char *org_host = host; /* only for error msg */
const char *cp;
struct addrinfo hint;
+ if (ENABLE_FEATURE_UNIX_LOCAL && strncmp(host, "local:", 6) == 0) {
+ struct sockaddr_un *sun;
+
+ r = xzalloc(LSA_LEN_SIZE + sizeof(struct sockaddr_un));
+ r->len = sizeof(struct sockaddr_un);
+ r->u.sa.sa_family = AF_UNIX;
+ sun = (struct sockaddr_un *)&r->u.sa;
+ safe_strncpy(sun->sun_path, host + 6, sizeof(sun->sun_path));
+ return r;
+ }
+
+ r = NULL;
+
/* Ugly parsing of host:addr */
if (ENABLE_FEATURE_IPV6 && host[0] == '[') {
/* Even uglier parsing of [xx]:nn */
host++;
cp = strchr(host, ']');
- if (!cp || cp[1] != ':') { /* Malformed: must have [xx]:nn */
+ if (!cp || (cp[1] != ':' && cp[1] != '\0')) {
+ /* Malformed: must be [xx]:nn or [xx] */
bb_error_msg("bad address '%s'", org_host);
if (ai_flags & DIE_ON_ERROR)
xfunc_die();
}
if (cp) { /* points to ":" or "]:" */
int sz = cp - host + 1;
+
host = safe_strncpy(alloca(sz), host, sz);
- if (ENABLE_FEATURE_IPV6 && *cp != ':')
+ if (ENABLE_FEATURE_IPV6 && *cp != ':') {
cp++; /* skip ']' */
+ if (*cp == '\0') /* [xx] without port */
+ goto skip;
+ }
cp++; /* skip ':' */
port = bb_strtou(cp, NULL, 10);
if (errno || (unsigned)port > 0xffff) {
xfunc_die();
return NULL;
}
+ skip: ;
}
memset(&hint, 0 , sizeof(hint));
}
#undef xsocket_type
-int FAST_FUNC xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int family,) int sock_type)
+int FAST_FUNC xsocket_type(len_and_sockaddr **lsap, IF_FEATURE_IPV6(int family,) int sock_type)
{
- SKIP_FEATURE_IPV6(enum { family = AF_INET };)
+ IF_NOT_FEATURE_IPV6(enum { family = AF_INET };)
len_and_sockaddr *lsa;
int fd;
int len;
int FAST_FUNC xsocket_stream(len_and_sockaddr **lsap)
{
- return xsocket_type(lsap, USE_FEATURE_IPV6(AF_UNSPEC,) SOCK_STREAM);
+ return xsocket_type(lsap, IF_FEATURE_IPV6(AF_UNSPEC,) SOCK_STREAM);
}
static int create_and_bind_or_die(const char *bindaddr, int port, int sock_type)
/* user specified bind addr dictates family */
fd = xsocket(lsa->u.sa.sa_family, sock_type, 0);
} else {
- fd = xsocket_type(&lsa, USE_FEATURE_IPV6(AF_UNSPEC,) sock_type);
+ fd = xsocket_type(&lsa, IF_FEATURE_IPV6(AF_UNSPEC,) sock_type);
set_nport(lsa, htons(port));
}
setsockopt_reuseaddr(fd);
int rc;
socklen_t salen;
+ if (ENABLE_FEATURE_UNIX_LOCAL && sa->sa_family == AF_UNIX) {
+ struct sockaddr_un *sun = (struct sockaddr_un *)sa;
+ return xasprintf("local:%.*s",
+ (int) sizeof(sun->sun_path),
+ sun->sun_path);
+ }
+
salen = LSA_SIZEOF_SA;
#if ENABLE_FEATURE_IPV6
if (sa->sa_family == AF_INET)
projects / oweals / busybox.git / blobdiff