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-rw-r--r--generic/tclIOSock.c183
1 files changed, 178 insertions, 5 deletions
diff --git a/generic/tclIOSock.c b/generic/tclIOSock.c
index ec4a9d9..768428f 100644
--- a/generic/tclIOSock.c
+++ b/generic/tclIOSock.c
@@ -10,6 +10,12 @@
*/
#include "tclInt.h"
+
+#if defined(_WIN32) && defined(UNICODE)
+/* On Windows, we always need the ASCII version. */
+# undef gai_strerror
+# define gai_strerror gai_strerrorA
+#endif
/*
*---------------------------------------------------------------------------
@@ -81,30 +87,197 @@ TclSockGetPort(
*----------------------------------------------------------------------
*/
+#ifdef _WIN32
+# define PTR2SOCK(a) (SOCKET)a
+#else
+# define PTR2SOCK(a) PTR2INT(a)
+#endif
int
TclSockMinimumBuffers(
- int sock, /* Socket file descriptor */
+ ClientData sock, /* Socket file descriptor */
int size) /* Minimum buffer size */
{
int current;
socklen_t len;
len = sizeof(int);
- getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&current, &len);
+ getsockopt(PTR2SOCK(sock), SOL_SOCKET, SO_SNDBUF, (char *)&current, &len);
if (current < size) {
len = sizeof(int);
- setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&size, len);
+ setsockopt(PTR2SOCK(sock), SOL_SOCKET, SO_SNDBUF, (char *)&size, len);
}
len = sizeof(int);
- getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&current, &len);
+ getsockopt(PTR2SOCK(sock), SOL_SOCKET, SO_RCVBUF, (char *)&current, &len);
if (current < size) {
len = sizeof(int);
- setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&size, len);
+ setsockopt(PTR2SOCK(sock), SOL_SOCKET, SO_RCVBUF, (char *)&size, len);
}
return TCL_OK;
}
/*
+ *----------------------------------------------------------------------
+ *
+ * TclCreateSocketAddress --
+ *
+ * This function initializes a sockaddr structure for a host and port.
+ *
+ * Results:
+ * 1 if the host was valid, 0 if the host could not be converted to an IP
+ * address.
+ *
+ * Side effects:
+ * Fills in the *sockaddrPtr structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCreateSocketAddress(
+ Tcl_Interp *interp, /* Interpreter for querying
+ * the desired socket family */
+ struct addrinfo **addrlist, /* Socket address list */
+ const char *host, /* Host. NULL implies INADDR_ANY */
+ int port, /* Port number */
+ int willBind, /* Is this an address to bind() to or
+ * to connect() to? */
+ const char **errorMsgPtr) /* Place to store the error message
+ * detail, if available. */
+{
+ struct addrinfo hints;
+ struct addrinfo *p;
+ struct addrinfo *v4head = NULL, *v4ptr = NULL;
+ struct addrinfo *v6head = NULL, *v6ptr = NULL;
+ char *native = NULL, portstring[TCL_INTEGER_SPACE];
+ const char *family = NULL;
+ Tcl_DString ds;
+ int result, i;
+
+ TclFormatInt(portstring, port);
+
+ if (host != NULL) {
+ native = Tcl_UtfToExternalDString(NULL, host, -1, &ds);
+ }
+
+ (void) memset(&hints, 0, sizeof(hints));
+
+ hints.ai_family = AF_UNSPEC;
+ /*
+ * Magic variable to enforce a certain address family - to be superseded
+ * by a TIP that adds explicit switches to [socket]
+ */
+ if (interp != NULL) {
+ family = Tcl_GetVar(interp, "::tcl::unsupported::socketAF", 0);
+ if (family != NULL) {
+ if (strcmp(family, "inet") == 0) {
+ hints.ai_family = AF_INET;
+ } else if (strcmp(family, "inet6") == 0) {
+ hints.ai_family = AF_INET6;
+ }
+ }
+ }
+
+ hints.ai_socktype = SOCK_STREAM;
+#if 0
+ /*
+ * We found some problems when using AI_ADDRCONFIG, e.g. on systems that
+ * have no networking besides the loopback interface and want to resolve
+ * localhost. See bugs 3385024, 3382419, 3382431. As the advantage of
+ * using AI_ADDRCONFIG in situations where it works, is probably low,
+ * we'll leave it out for now. After all, it is just an optimisation.
+ */
+#if defined(AI_ADDRCONFIG) && !defined(_AIX) && !defined(__hpux)
+ /*
+ * Missing on: OpenBSD, NetBSD.
+ * Causes failure when used on AIX 5.1 and HP-UX
+ */
+ hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+#endif
+ if (willBind) {
+ hints.ai_flags |= AI_PASSIVE;
+ }
+
+ result = getaddrinfo(native, portstring, &hints, addrlist);
+
+ if (host != NULL) {
+ Tcl_DStringFree(&ds);
+ }
+
+ if (result != 0) {
+ goto error;
+ }
+
+ /*
+ * Put IPv4 addresses before IPv6 addresses to maximize backwards
+ * compatibility of [fconfigure -sockname] output.
+ *
+ * There might be more elegant/efficient ways to do this.
+ */
+ if (willBind) {
+ for (p = *addrlist; p != NULL; p = p->ai_next) {
+ if (p->ai_family == AF_INET) {
+ if (v4head == NULL) {
+ v4head = p;
+ } else {
+ v4ptr->ai_next = p;
+ }
+ v4ptr = p;
+ } else {
+ if (v6head == NULL) {
+ v6head = p;
+ } else {
+ v6ptr->ai_next = p;
+ }
+ v6ptr = p;
+ }
+ }
+ *addrlist = NULL;
+ if (v6head != NULL) {
+ *addrlist = v6head;
+ v6ptr->ai_next = NULL;
+ }
+ if (v4head != NULL) {
+ v4ptr->ai_next = *addrlist;
+ *addrlist = v4head;
+ }
+ }
+ i = 0;
+ for (p = *addrlist; p != NULL; p = p->ai_next) {
+ i++;
+ }
+
+ return 1;
+
+ /*
+ * Ought to use gai_strerror() here...
+ */
+
+error:
+ switch (result) {
+ case EAI_NONAME:
+ case EAI_SERVICE:
+#if defined(EAI_ADDRFAMILY) && EAI_ADDRFAMILY != EAI_NONAME
+ case EAI_ADDRFAMILY:
+#endif
+#if defined(EAI_NODATA) && EAI_NODATA != EAI_NONAME
+ case EAI_NODATA:
+#endif
+ *errorMsgPtr = gai_strerror(result);
+ errno = EHOSTUNREACH;
+ return 0;
+#ifdef EAI_SYSTEM
+ case EAI_SYSTEM:
+ return 0;
+#endif
+ default:
+ *errorMsgPtr = gai_strerror(result);
+ errno = ENXIO;
+ return 0;
+ }
+}
+
+/*
* Local Variables:
* mode: c
* c-basic-offset: 4