From d059ee1eae54c31eba7089543cac78953f25e303 Mon Sep 17 00:00:00 2001
From: Olga Kornievskaia <aglo@citi.umich.edu>
Date: Fri, 8 Apr 2011 17:42:30 -0400
Subject: [PATCH] getdomainname stores machine's domain name

need this for acls
---
 daemon/nfs41.h        |   2 +
 daemon/nfs41_client.c | 118 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+)

diff --git a/daemon/nfs41.h b/daemon/nfs41.h
index 2c2dc46..f8dd555 100644
--- a/daemon/nfs41.h
+++ b/daemon/nfs41.h
@@ -148,6 +148,8 @@ typedef struct __nfs41_client {
 
     /* for state recovery on server reboot */
     struct client_state state;
+    /* for ACLs default domain name */
+    char domain_name[NFS41_HOSTNAME_LEN];
 } nfs41_client;
 
 #define NFS41_MAX_NUM_SLOTS NFS41_MAX_RPC_REQS
diff --git a/daemon/nfs41_client.c b/daemon/nfs41_client.c
index 8756ca5..ecd51df 100644
--- a/daemon/nfs41_client.c
+++ b/daemon/nfs41_client.c
@@ -27,6 +27,7 @@
 #include <winsock2.h>
 #include <iphlpapi.h> /* for GetAdaptersAddresses() */
 #include <wincrypt.h> /* for Crypt*() functions */
+#include <winsock2.h> /* for hostent struct */
 
 #include "tree.h"
 #include "daemon_debug.h"
@@ -105,6 +106,117 @@ static int update_exchangeid_res(
         &exchangeid->server_owner);
 }
 
+static void print_getaddrinfo(struct addrinfo *ptr)
+{
+    char ipstringbuffer[46];
+    DWORD ipbufferlength = 46;
+
+    dprintf(1, "getaddrinfo response flags: 0x%x\n", ptr->ai_flags);
+    switch (ptr->ai_family) {
+    case AF_UNSPEC: dprintf(1, "Family: Unspecified\n"); break;
+    case AF_INET:
+        dprintf(1, "Family: AF_INET IPv4 address %s\n",
+            inet_ntoa(((struct sockaddr_in *)ptr->ai_addr)->sin_addr));
+        break;
+    case AF_INET6:
+        if (WSAAddressToString((LPSOCKADDR)ptr->ai_addr, (DWORD)ptr->ai_addrlen, 
+                NULL, ipstringbuffer, &ipbufferlength))
+            dprintf(1, "WSAAddressToString failed with %u\n", WSAGetLastError());
+        else    
+            dprintf(1, "Family: AF_INET6 IPv6 address %s\n", ipstringbuffer);
+        break;
+    case AF_NETBIOS: dprintf(1, "AF_NETBIOS (NetBIOS)\n"); break;
+    default: dprintf(1, "Other %ld\n", ptr->ai_family); break;
+    }
+    dprintf(1, "Canonical name: %s\n", ptr->ai_canonname);
+}
+
+static int getdomainname(char *domain)
+{
+    int status = 0;
+    PFIXED_INFO net_info = NULL;
+    DWORD size = 0;
+    BOOLEAN flag = FALSE;
+
+    status = GetNetworkParams(net_info, &size);
+    if (status != ERROR_BUFFER_OVERFLOW) {
+        eprintf("getdomainname: GetNetworkParams returned %d\n", status);
+        goto out;
+    }
+    net_info = calloc(1, size);
+    if (net_info == NULL) {
+        status = GetLastError();
+        goto out;
+    }
+    status = GetNetworkParams(net_info, &size);
+    if (status) {
+        eprintf("getdomainname: GetNetworkParams returned %d\n", status);
+        goto out_free;
+    }
+
+    if (net_info->DomainName[0] == '\0') {
+        struct addrinfo *result = NULL, *ptr = NULL, hints;
+        char hostname[NI_MAXHOST], servInfo[NI_MAXSERV];
+
+        ZeroMemory(&hints, sizeof(hints));
+        hints.ai_socktype = SOCK_STREAM;
+        hints.ai_protocol = IPPROTO_TCP;
+
+        status = getaddrinfo(net_info->HostName, NULL, &hints, &result);
+        if (status) {
+            status = WSAGetLastError();
+            eprintf("getdomainname: getaddrinfo failed with %d\n", status);
+            goto out_free;
+        } 
+
+        for (ptr=result; ptr != NULL ;ptr=ptr->ai_next) {
+            print_getaddrinfo(ptr);
+
+            switch (ptr->ai_family) {
+            case AF_INET6:
+            case AF_INET:
+                status = getnameinfo((struct sockaddr *)ptr->ai_addr,
+                            (socklen_t)ptr->ai_addrlen, hostname, NI_MAXHOST, 
+                            servInfo, NI_MAXSERV, NI_NAMEREQD);
+                if (status)
+                    dprintf(1, "getnameinfo failed %d\n", WSAGetLastError());
+                else {
+                    int i = 0;
+                    size_t len = strlen(hostname);
+                    char *p = hostname;
+                    dprintf(1, "getdomainname: hostname %s %d\n", hostname, len);
+                    for(i = 0; i < len; i++)
+                        if (p[i] == '.')
+                            break;
+                    if (i == len)
+                        break;
+                    flag = TRUE;
+                    memcpy(domain, &hostname[i+1], len-i);
+                    dprintf(1, "getdomainname: domainname %s %d\n", domain, strlen(domain));
+                    goto out_loop;
+                }
+                break;
+            default:
+                break;
+            }
+        }
+out_loop:
+        if (!flag) {
+            status = ERROR_INTERNAL_ERROR;
+            eprintf("getdomainname: unable to get a domain name\n");
+        }
+        freeaddrinfo(result);
+    } else {
+        dprintf(1, "domain name is %s\n", net_info->DomainName);
+        memcpy(domain, net_info->DomainName, strlen(net_info->DomainName));
+        domain[strlen(net_info->DomainName)] = '\0';
+    }
+out_free:
+    free(net_info);
+out:
+    return status;
+}
+
 int nfs41_client_create(
     IN nfs41_rpc_clnt *rpc,
     IN const client_owner4 *owner,
@@ -121,6 +233,12 @@ int nfs41_client_create(
         goto out_err_rpc;
     }
 
+    status = getdomainname(client->domain_name);
+    if (status) {
+        free(client);
+        goto out_err_rpc;
+    }
+
     memcpy(&client->owner, owner, sizeof(client_owner4));
     client->rpc = rpc;
     client->is_data = is_data;