const char *error;
int s;
Plug plug;
- void *private_ptr;
bufchain output_data;
int connected; /* irrelevant for listening sockets */
int writable;
hints.ai_addr = NULL;
hints.ai_canonname = NULL;
hints.ai_next = NULL;
- err = getaddrinfo(host, NULL, &hints, &ret->ais);
+ {
+ char *trimmed_host = host_strduptrim(host); /* strip [] on literals */
+ err = getaddrinfo(trimmed_host, NULL, &hints, &ret->ais);
+ sfree(trimmed_host);
+ }
if (err != 0) {
ret->error = gai_strerror(err);
return ret;
void sk_getaddr(SockAddr addr, char *buf, int buflen)
{
- /* XXX not clear what we should return for Unix-domain sockets; let's
- * hope the question never arises */
- assert(addr->superfamily != UNIX);
- if (addr->superfamily == UNRESOLVED) {
+ if (addr->superfamily == UNRESOLVED || addr->superfamily == UNIX) {
strncpy(buf, addr->hostname, buflen);
buf[buflen-1] = '\0';
} else {
}
#else
struct in_addr a;
- SockAddrStep step;
- START_STEP(addr, step);
- assert(SOCKADDR_FAMILY(addr, step) == AF_INET);
+ assert(SOCKADDR_FAMILY(addr, ignored_macro_parameter) == AF_INET);
a.s_addr = htonl(addr->addresses[0]);
strncpy(buf, inet_ntoa(a), buflen);
buf[buflen-1] = '\0';
}
}
+int sk_addr_needs_port(SockAddr addr)
+{
+ if (addr->superfamily == UNRESOLVED || addr->superfamily == UNIX) {
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+}
+
int sk_hostname_is_local(const char *name)
{
return !strcmp(name, "localhost") ||
return sockaddr_is_loopback(addr->ais->ai_addr);
#else
struct in_addr a;
- SockAddrStep step;
- START_STEP(addr, step);
- assert(SOCKADDR_FAMILY(addr, step) == AF_INET);
+ assert(SOCKADDR_FAMILY(addr, ignored_macro_parameter) == AF_INET);
a.s_addr = htonl(addr->addresses[0]);
return ipv4_is_loopback(a);
#endif
int sk_addrtype(SockAddr addr)
{
- SockAddrStep step;
int family;
- START_STEP(addr, step);
- family = SOCKADDR_FAMILY(addr, step);
+ family = SOCKADDR_FAMILY(addr, ignored_macro_parameter);
return (family == AF_INET ? ADDRTYPE_IPV4 :
#ifndef NO_IPV6
static int sk_tcp_write(Socket s, const char *data, int len);
static int sk_tcp_write_oob(Socket s, const char *data, int len);
static void sk_tcp_write_eof(Socket s);
-static void sk_tcp_set_private_ptr(Socket s, void *ptr);
-static void *sk_tcp_get_private_ptr(Socket s);
static void sk_tcp_set_frozen(Socket s, int is_frozen);
static const char *sk_tcp_socket_error(Socket s);
sk_tcp_write_oob,
sk_tcp_write_eof,
sk_tcp_flush,
- sk_tcp_set_private_ptr,
- sk_tcp_get_private_ptr,
sk_tcp_set_frozen,
sk_tcp_socket_error
};
-Socket sk_register(OSSocket sockfd, Plug plug)
+static Socket sk_tcp_accept(accept_ctx_t ctx, Plug plug)
{
+ int sockfd = ctx.i;
Actual_Socket ret;
/*
ret->incomingeof = FALSE;
ret->listener = 1;
ret->addr = NULL;
+ ret->s = -1;
/*
* Translate address_family from platform-independent constants
hints.ai_next = NULL;
assert(port >= 0 && port <= 99999);
sprintf(portstr, "%d", port);
- retcode = getaddrinfo(srcaddr, portstr, &hints, &ai);
+ {
+ char *trimmed_addr = host_strduptrim(srcaddr);
+ retcode = getaddrinfo(trimmed_addr, portstr, &hints, &ai);
+ sfree(trimmed_addr);
+ }
if (retcode == 0) {
addr = (union sockaddr_union *)ai->ai_addr;
addrlen = ai->ai_addrlen;
return buf;
}
+/*
+ * Deal with socket errors detected in try_send().
+ */
+static void socket_error_callback(void *vs)
+{
+ Actual_Socket s = (Actual_Socket)vs;
+
+ /*
+ * Just in case other socket work has caused this socket to vanish
+ * or become somehow non-erroneous before this callback arrived...
+ */
+ if (!find234(sktree, s, NULL) || !s->pending_error)
+ return;
+
+ /*
+ * An error has occurred on this socket. Pass it to the plug.
+ */
+ plug_closing(s->plug, strerror(s->pending_error), s->pending_error, 0);
+}
+
/*
* The function which tries to send on a socket once it's deemed
* writable.
*/
uxsel_tell(s);
/*
- * Notify the front end that it might want to call us.
+ * Arrange to be called back from the top level to
+ * deal with the error condition on this socket.
*/
- frontend_net_error_pending();
+ queue_toplevel_callback(socket_error_callback, s);
return;
}
} else {
*/
union sockaddr_union su;
socklen_t addrlen = sizeof(su);
+ accept_ctx_t actx;
int t; /* socket of connection */
memset(&su, 0, addrlen);
}
nonblock(t);
+ actx.i = t;
- if (s->localhost_only &&
- !sockaddr_is_loopback(&su.sa)) {
+ if ((!s->addr || s->addr->superfamily != UNIX) &&
+ s->localhost_only && !sockaddr_is_loopback(&su.sa)) {
close(t); /* someone let nonlocal through?! */
- } else if (plug_accepting(s->plug, t)) {
+ } else if (plug_accepting(s->plug, sk_tcp_accept, actx)) {
close(t); /* denied or error */
}
break;
return 1;
}
-/*
- * Deal with socket errors detected in try_send().
- */
-void net_pending_errors(void)
-{
- int i;
- Actual_Socket s;
-
- /*
- * This might be a fiddly business, because it's just possible
- * that handling a pending error on one socket might cause
- * others to be closed. (I can't think of any reason this might
- * happen in current SSH implementation, but to maintain
- * generality of this network layer I'll assume the worst.)
- *
- * So what we'll do is search the socket list for _one_ socket
- * with a pending error, and then handle it, and then search
- * the list again _from the beginning_. Repeat until we make a
- * pass with no socket errors present. That way we are
- * protected against the socket list changing under our feet.
- */
-
- do {
- for (i = 0; (s = index234(sktree, i)) != NULL; i++) {
- if (s->pending_error) {
- /*
- * An error has occurred on this socket. Pass it to the
- * plug.
- */
- plug_closing(s->plug, strerror(s->pending_error),
- s->pending_error, 0);
- break;
- }
- }
- } while (s);
-}
-
-/*
- * Each socket abstraction contains a `void *' private field in
- * which the client can keep state.
- */
-static void sk_tcp_set_private_ptr(Socket sock, void *ptr)
-{
- Actual_Socket s = (Actual_Socket) sock;
- s->private_ptr = ptr;
-}
-
-static void *sk_tcp_get_private_ptr(Socket sock)
-{
- Actual_Socket s = (Actual_Socket) sock;
- return s->private_ptr;
-}
-
/*
* Special error values are returned from sk_namelookup and sk_new
* if there's a problem. These functions extract an error message,
ret->refcount = 1;
return ret;
}
+
+SockAddr unix_sock_addr(const char *path)
+{
+ SockAddr ret = snew(struct SockAddr_tag);
+ int n;
+
+ memset(ret, 0, sizeof *ret);
+ ret->superfamily = UNIX;
+ n = snprintf(ret->hostname, sizeof ret->hostname, "%s", path);
+
+ if (n < 0)
+ ret->error = "snprintf failed";
+ else if (n >= sizeof ret->hostname)
+ ret->error = "socket pathname too long";
+
+#ifndef NO_IPV6
+ ret->ais = NULL;
+#else
+ ret->addresses = NULL;
+ ret->naddresses = 0;
+#endif
+ ret->refcount = 1;
+ return ret;
+}
+
+Socket new_unix_listener(SockAddr listenaddr, Plug plug)
+{
+ int s;
+ union sockaddr_union u;
+ union sockaddr_union *addr;
+ int addrlen;
+ Actual_Socket ret;
+ int retcode;
+
+ /*
+ * Create Socket structure.
+ */
+ ret = snew(struct Socket_tag);
+ ret->fn = &tcp_fn_table;
+ ret->error = NULL;
+ ret->plug = plug;
+ bufchain_init(&ret->output_data);
+ ret->writable = 0; /* to start with */
+ ret->sending_oob = 0;
+ ret->frozen = 0;
+ ret->localhost_only = TRUE;
+ ret->pending_error = 0;
+ ret->parent = ret->child = NULL;
+ ret->oobpending = FALSE;
+ ret->outgoingeof = EOF_NO;
+ ret->incomingeof = FALSE;
+ ret->listener = 1;
+ ret->addr = listenaddr;
+ ret->s = -1;
+
+ assert(listenaddr->superfamily == UNIX);
+
+ /*
+ * Open socket.
+ */
+ s = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (s < 0) {
+ ret->error = strerror(errno);
+ return (Socket) ret;
+ }
+
+ cloexec(s);
+
+ ret->oobinline = 0;
+
+ memset(&u, '\0', sizeof(u));
+ u.su.sun_family = AF_UNIX;
+ strncpy(u.su.sun_path, listenaddr->hostname, sizeof(u.su.sun_path)-1);
+ addr = &u;
+ addrlen = sizeof(u.su);
+
+ if (unlink(u.su.sun_path) < 0 && errno != ENOENT) {
+ close(s);
+ ret->error = strerror(errno);
+ return (Socket) ret;
+ }
+
+ retcode = bind(s, &addr->sa, addrlen);
+ if (retcode < 0) {
+ close(s);
+ ret->error = strerror(errno);
+ return (Socket) ret;
+ }
+
+ if (listen(s, SOMAXCONN) < 0) {
+ close(s);
+ ret->error = strerror(errno);
+ return (Socket) ret;
+ }
+
+ ret->s = s;
+
+ uxsel_tell(ret);
+ add234(sktree, ret);
+
+ return (Socket) ret;
+}
projects / PuTTY.git / blobdiff