From e86eee143ed21592f88a46623a81f71002430459 Mon Sep 17 00:00:00 2001
From: Dmitry Shmidt <dimitrysh@google.com>
Date: Mon, 24 Jan 2011 16:27:51 -0800
Subject: dhcpcd: Update to Version 5.2.10

Change-Id: I949331c7aad91b125decd51da4041983d3a352bc
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
---
 ifaddrs.c | 146 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 ifaddrs.c

(limited to 'ifaddrs.c')

diff --git a/ifaddrs.c b/ifaddrs.c
new file mode 100644
index 0000000..cb8fd76
--- /dev/null
+++ b/ifaddrs.c
@@ -0,0 +1,146 @@
+/* external/dhcpcd/ifaddrs.c
+**
+** Copyright 2011, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");.
+** you may not use this file except in compliance with the License..
+** You may obtain a copy of the License at.
+**
+**     http://www.apache.org/licenses/LICENSE-2.0.
+**
+** Unless required by applicable law or agreed to in writing, software.
+** distributed under the License is distributed on an "AS IS" BASIS,.
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied..
+** See the License for the specific language governing permissions and.
+** limitations under the License.
+*/
+
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include "ifaddrs.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <netinet/ether.h>
+#include <netdb.h>
+#include <linux/if_packet.h>
+#include <netinet/if_ether.h>
+#include <linux/if_arp.h>
+#include <netutils/ifc.h>
+
+struct ifaddrs *get_interface(const char *name, sa_family_t family)
+{
+    unsigned addr, mask, flags;
+    struct ifaddrs *ifa;
+    struct sockaddr_in *saddr = NULL;
+    struct sockaddr_in *smask = NULL;
+    struct sockaddr_ll *hwaddr = NULL;
+    unsigned char hwbuf[ETH_ALEN];
+
+    if(ifc_get_info(name, &addr, &mask, &flags))
+        return NULL;
+
+    if ((family == AF_INET) && (addr == 0))
+        return NULL;
+
+    ifa = malloc(sizeof(struct ifaddrs));
+    if (!ifa)
+        return NULL;
+    memset(ifa, 0, sizeof(struct ifaddrs));
+
+    ifa->ifa_name = malloc(strlen(name)+1);
+    if (!ifa->ifa_name) {
+        free(ifa);
+        return NULL;
+    }
+    strcpy(ifa->ifa_name, name);
+    ifa->ifa_flags = flags;
+
+    if (family == AF_INET) {
+        saddr = malloc(sizeof(struct sockaddr_in));
+        if (saddr) {
+            saddr->sin_addr.s_addr = addr;
+            saddr->sin_family = family;
+        }
+        ifa->ifa_addr = (struct sockaddr *)saddr;
+
+        if (mask != 0) {
+            smask = malloc(sizeof(struct sockaddr_in));
+            if (smask) {
+                smask->sin_addr.s_addr = mask;
+                smask->sin_family = family;
+            }
+        }
+        ifa->ifa_netmask = (struct sockaddr *)smask;
+    } else if (family == AF_PACKET) {
+        if (!ifc_get_hwaddr(name, hwbuf)) {
+            hwaddr = malloc(sizeof(struct sockaddr_ll));
+            if (hwaddr) {
+                memset(hwaddr, 0, sizeof(struct sockaddr_ll));
+                hwaddr->sll_family = family;
+                /* hwaddr->sll_protocol = ETHERTYPE_IP; */
+                hwaddr->sll_hatype = ARPHRD_ETHER;
+                hwaddr->sll_halen = ETH_ALEN;
+                memcpy(hwaddr->sll_addr, hwbuf, ETH_ALEN);
+            }
+        }
+        ifa->ifa_addr = (struct sockaddr *)hwaddr;
+        ifa->ifa_netmask = (struct sockaddr *)smask;
+    }
+    return ifa;
+}
+
+int getifaddrs(struct ifaddrs **ifap)
+{
+    DIR *d;
+    struct dirent *de;
+    struct ifaddrs *ifa;
+    struct ifaddrs *ifah = NULL;
+
+    if (!ifap)
+        return -1;
+    *ifap = NULL;
+
+    if (ifc_init())
+       return -1;
+
+    d = opendir("/sys/class/net");
+    if (d == 0)
+        return -1;
+    while ((de = readdir(d))) {
+        if (de->d_name[0] == '.')
+            continue;
+        ifa = get_interface(de->d_name, AF_INET);
+        if (ifa != NULL) {
+            ifa->ifa_next = ifah;
+            ifah = ifa;
+        }
+        ifa = get_interface(de->d_name, AF_PACKET);
+        if (ifa != NULL) {
+            ifa->ifa_next = ifah;
+            ifah = ifa;
+        }
+    }
+    *ifap = ifah;
+    closedir(d);
+    ifc_close();
+    return 0;
+}
+
+void freeifaddrs(struct ifaddrs *ifa)
+{
+    struct ifaddrs *ifp;
+
+    while (ifa) {
+        ifp = ifa;
+        free(ifp->ifa_name);
+        if (ifp->ifa_addr)
+            free(ifp->ifa_addr);
+        if (ifp->ifa_netmask)
+            free(ifp->ifa_netmask);
+        ifa = ifa->ifa_next;
+        free(ifp);
+    }
+}
-- 
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