Samba utility functions
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008
Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Jeremy Allison 2001-2007
+ Copyright (C) Jeremy Allison 1992-2007
Copyright (C) Simo Sorce 2001
Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2003.
Copyright (C) James J Myers 2003
+ Copyright (C) Tim Potter 2000-2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "system/network.h"
#include "system/locale.h"
#include "system/filesys.h"
+#include "lib/util/util_net.h"
#undef strcasecmp
+/*******************************************************************
+ Set an address to INADDR_ANY.
+******************************************************************/
+
+void zero_sockaddr(struct sockaddr_storage *pss)
+{
+ ZERO_STRUCTP(pss);
+ /* Ensure we're at least a valid sockaddr-storage. */
+ pss->ss_family = AF_INET;
+}
+
/**
* Wrap getaddrinfo...
*/
int ret;
struct addrinfo hints;
- memset(&hints, '\0', sizeof(hints));
+ ZERO_STRUCT(hints);
+
/* By default make sure it supports TCP. */
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = flags;
- /* Linux man page on getaddinfo() says port will be
- uninitialized when service string in NULL */
+ /* Linux man page on getaddrinfo() says port will be
+ uninitialized when service string is NULL */
ret = getaddrinfo(str, NULL,
&hints,
return true;
}
+/*******************************************************************
+ Map a text hostname or IP address (IPv4 or IPv6) into a
+ struct sockaddr_storage. Takes a flag which allows it to
+ prefer an IPv4 address (needed for DC's).
+******************************************************************/
+
+static bool interpret_string_addr_pref(struct sockaddr_storage *pss,
+ const char *str,
+ int flags,
+ bool prefer_ipv4)
+{
+ struct addrinfo *res = NULL;
+#if defined(HAVE_IPV6)
+ char addr[INET6_ADDRSTRLEN];
+ unsigned int scope_id = 0;
+
+ if (strchr_m(str, ':')) {
+ char *p = strchr_m(str, '%');
+
+ /*
+ * Cope with link-local.
+ * This is IP:v6:addr%ifname.
+ */
+
+ if (p && (p > str) && ((scope_id = if_nametoindex(p+1)) != 0)) {
+ strlcpy(addr, str,
+ MIN(PTR_DIFF(p,str)+1,
+ sizeof(addr)));
+ str = addr;
+ }
+ }
+#endif
+
+ zero_sockaddr(pss);
+
+ if (!interpret_string_addr_internal(&res, str, flags|AI_ADDRCONFIG)) {
+ return false;
+ }
+ if (!res) {
+ return false;
+ }
+
+ if (prefer_ipv4) {
+ struct addrinfo *p;
+
+ for (p = res; p; p = p->ai_next) {
+ if (p->ai_family == AF_INET) {
+ memcpy(pss, p->ai_addr, p->ai_addrlen);
+ break;
+ }
+ }
+ if (p == NULL) {
+ /* Copy the first sockaddr. */
+ memcpy(pss, res->ai_addr, res->ai_addrlen);
+ }
+ } else {
+ /* Copy the first sockaddr. */
+ memcpy(pss, res->ai_addr, res->ai_addrlen);
+ }
+
+#if defined(HAVE_IPV6)
+ if (pss->ss_family == AF_INET6 && scope_id) {
+ struct sockaddr_in6 *ps6 = (struct sockaddr_in6 *)pss;
+ if (IN6_IS_ADDR_LINKLOCAL(&ps6->sin6_addr) &&
+ ps6->sin6_scope_id == 0) {
+ ps6->sin6_scope_id = scope_id;
+ }
+ }
+#endif
+
+ freeaddrinfo(res);
+ return true;
+}
+
+/*******************************************************************
+ Map a text hostname or IP address (IPv4 or IPv6) into a
+ struct sockaddr_storage. Address agnostic version.
+******************************************************************/
+
+bool interpret_string_addr(struct sockaddr_storage *pss,
+ const char *str,
+ int flags)
+{
+ return interpret_string_addr_pref(pss,
+ str,
+ flags,
+ false);
+}
+
+/*******************************************************************
+ Map a text hostname or IP address (IPv4 or IPv6) into a
+ struct sockaddr_storage. Version that prefers IPv4.
+******************************************************************/
+
+bool interpret_string_addr_prefer_ipv4(struct sockaddr_storage *pss,
+ const char *str,
+ int flags)
+{
+ return interpret_string_addr_pref(pss,
+ str,
+ flags,
+ true);
+}
+
/**
* Interpret an internet address or name into an IP address in 4 byte form.
* RETURNS IN NETWORK BYTE ORDER (big endian).
/**
* Check if a struct sockaddr has an unspecified address.
*/
-bool is_zero_addr(const struct sockaddr *pss)
+bool is_zero_addr(const struct sockaddr_storage *pss)
{
#if defined(HAVE_IPV6)
- if (pss->sa_family == AF_INET6) {
+ if (pss->ss_family == AF_INET6) {
const struct in6_addr *pin6 =
&((const struct sockaddr_in6 *)pss)->sin6_addr;
return IN6_IS_ADDR_UNSPECIFIED(pin6);
}
#endif
- if (pss->sa_family == AF_INET) {
+ if (pss->ss_family == AF_INET) {
const struct in_addr *pin = &((const struct sockaddr_in *)pss)->sin_addr;
return is_zero_ip_v4(*pin);
}
* Are two sockaddr 's the same family and address ? Ignore port etc.
*/
-bool addr_equal(const struct sockaddr *ip1,
+bool sockaddr_equal(const struct sockaddr *ip1,
const struct sockaddr *ip2)
{
if (ip1->sa_family != ip2->sa_family) {
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