ICE (work in progress): use single socket for all candidates in component, and implemented IP interface enumeration on Win32
git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1104 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/src/pj/ip_helper_win32.c b/pjlib/src/pj/ip_helper_win32.c
new file mode 100644
index 0000000..094cfc9
--- /dev/null
+++ b/pjlib/src/pj/ip_helper_win32.c
@@ -0,0 +1,136 @@
+/* $Id$ */
+/*
+ * Copyright (C)2003-2007 Benny Prijono <benny@prijono.org>
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/* PMIB_ICMP_EX is not declared in VC6, causing error */
+#if defined(_MSC_VER) && _MSC_VER < 1400
+# define PMIB_ICMP_EX void*
+#endif
+#include <Iphlpapi.h>
+
+#include <pj/ip_helper.h>
+#include <pj/assert.h>
+#include <pj/errno.h>
+#include <pj/string.h>
+
+
+/*
+ * Enumerate the local IP interface currently active in the host.
+ */
+PJ_DEF(pj_status_t) pj_enum_ip_interface(unsigned *p_cnt,
+ pj_in_addr ifs[])
+{
+ /* Provide enough buffer or otherwise it will fail with
+ * error 22 ("Not Enough Buffer") error.
+ */
+ MIB_IPADDRTABLE ipTabBuff[4];
+ MIB_IPADDRTABLE *pTab;
+ ULONG tabSize;
+ unsigned i, count;
+ DWORD rc;
+
+ PJ_ASSERT_RETURN(p_cnt && ifs, PJ_EINVAL);
+
+ pTab = ipTabBuff;
+
+ /* Get IP address table */
+ tabSize = sizeof(ipTabBuff);
+ rc = GetIpAddrTable(ipTabBuff, &tabSize, FALSE);
+ if (rc != NO_ERROR)
+ return PJ_RETURN_OS_ERROR(rc);
+
+ /* Reset result */
+ pj_bzero(ifs, sizeof(ifs[0]) * (*p_cnt));
+
+ /* Now fill out the entries */
+ count = (pTab->dwNumEntries < *p_cnt) ? pTab->dwNumEntries : *p_cnt;
+ for (i=0; i<count; ++i) {
+ ifs[i].s_addr = pTab->table[i].dwAddr;
+ }
+
+ *p_cnt = count;
+
+ return PJ_SUCCESS;
+
+}
+
+
+/*
+ * Enumerate the IP routing table for this host.
+ */
+PJ_DEF(pj_status_t) pj_enum_ip_route(unsigned *p_cnt,
+ pj_ip_route_entry routes[])
+{
+ MIB_IPADDRTABLE ipTabBuff[4];
+ MIB_IPADDRTABLE *pIpTab;
+ MIB_IPFORWARDTABLE rtabBuff[4];
+ MIB_IPFORWARDTABLE *prTab;
+ ULONG tabSize;
+ unsigned i, count;
+ DWORD rc;
+
+ PJ_ASSERT_RETURN(p_cnt && routes, PJ_EINVAL);
+
+ pIpTab = ipTabBuff;
+ prTab = rtabBuff;
+
+ /* First get IP address table */
+ tabSize = sizeof(ipTabBuff);
+ rc = GetIpAddrTable(ipTabBuff, &tabSize, FALSE);
+ if (rc != NO_ERROR)
+ return PJ_RETURN_OS_ERROR(rc);
+
+ /* Next get IP route table */
+ tabSize = sizeof(rtabBuff);
+ rc = GetIpForwardTable(rtabBuff, &tabSize, 1);
+ if (rc != NO_ERROR)
+ return PJ_RETURN_OS_ERROR(rc);
+
+ /* Reset routes */
+ pj_bzero(routes, sizeof(routes[0]) * (*p_cnt));
+
+ /* Now fill out the route entries */
+ count = (prTab->dwNumEntries < *p_cnt) ? prTab->dwNumEntries : *p_cnt;
+ *p_cnt = 0;
+ for (i=0; i<count; ++i) {
+ unsigned j;
+
+ /* Find interface entry */
+ for (j=0; j<pIpTab->dwNumEntries; ++j) {
+ if (pIpTab->table[j].dwIndex == prTab->table[i].dwForwardIfIndex)
+ break;
+ }
+
+ if (j==pIpTab->dwNumEntries)
+ continue; /* Interface not found */
+
+ routes[*p_cnt].ipv4.if_addr.s_addr = pIpTab->table[j].dwAddr;
+ routes[*p_cnt].ipv4.dst_addr.s_addr = prTab->table[i].dwForwardDest;
+ routes[*p_cnt].ipv4.mask.s_addr = prTab->table[i].dwForwardMask;
+
+ (*p_cnt)++;
+ }
+
+ return PJ_SUCCESS;
+}
+
+
+