mirror of
https://github.com/schwabe/ics-openvpn.git
synced 2024-09-20 12:02:28 +02:00
5dc5033145
Fixes allow local LAN on Android 5.0 --HG-- extra : rebase_source : ac79c41800905f3aeb23ce49a617ab226a6473c0
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
#include <jni.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <sys/ioctl.h>
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#include <linux/if.h>
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#include <android/log.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include "jniglue.h"
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jobjectArray Java_de_blinkt_openvpn_core_NativeUtils_getIfconfig(JNIEnv* env)
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{
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int sd;
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if ((sd = socket (AF_INET, SOCK_DGRAM, 0)) < 0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "Opening socket for intface get failed");
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//jniThrowException(env, "java/lang/IllegalArgumentException", "Opening socket for intface get failed");
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return NULL;
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}
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struct ifreq ifs[23];
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struct ifconf ifc;
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ifc.ifc_req = ifs;
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ifc.ifc_len = sizeof (ifs);
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if (ioctl (sd, SIOCGIFCONF, &ifc) < 0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "IOCTL for intface get failed");
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//jniThrowException(env, "java/lang/IllegalArgumentException", "IOTCL socket for intface get failed");
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return NULL;
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}
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char buf[NI_MAXHOST];
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int ji=0;
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/*
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jtmp = (*env)->NewStringUTF(env, "HALLO WELT");
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(*env)->SetObjectArrayElement(env, ret, ji++, jtmp);
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*/
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size_t num_intf=ifc.ifc_len / sizeof(struct ifreq);
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jobjectArray ret= (jobjectArray) (*env)->NewObjectArray(env, num_intf*3,(*env)->FindClass(env, "java/lang/String"), NULL);
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for (struct ifreq* ifr = ifc.ifc_req; ifr < ifs + num_intf; ifr++) {
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if (ifr->ifr_addr.sa_family != AF_INET) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "NOT AF_INET: %s", ifr->ifr_name);
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continue;
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}
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/* get interface addr, prefilled by SIOGIFCONF */
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int err;
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if (err=getnameinfo(&ifr->ifr_addr, sizeof(struct sockaddr_in), buf, NI_MAXHOST, NULL, 0,
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NI_NUMERICHOST) !=0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "getnameinfo failed for %s: %s", ifr->ifr_name, gai_strerror(err));
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continue;
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}
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jstring jaddr = (*env)->NewStringUTF(env, buf);
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jstring jname = (*env)->NewStringUTF(env, ifr->ifr_name);
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struct ifreq ifreq;
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strncpy (ifreq.ifr_name, ifr->ifr_name, sizeof (ifreq.ifr_name));
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/* interface is up */
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if (ioctl (sd, SIOCGIFFLAGS, &ifreq) < 0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "SIOCGIFFLAGS failed for %s: %s", ifr->ifr_name, strerror(errno));
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continue;
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}
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if (!(ifreq.ifr_flags & IFF_UP)) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "IFF_UP failed for %s", ifr->ifr_name);
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continue;
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}
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/* interface netmask */
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if (ioctl (sd, SIOCGIFNETMASK, &ifreq) < 0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "SIOCIFNETMASK failed for %s: %s", ifr->ifr_name, strerror(errno));
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continue;
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}
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if (err=getnameinfo(&ifreq.ifr_netmask, sizeof(struct sockaddr_in), buf, NI_MAXHOST, NULL, 0,
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NI_NUMERICHOST) !=0) {
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__android_log_print(ANDROID_LOG_DEBUG, "openvpn", "getnameinfo failed for %s: %s", ifr->ifr_name, gai_strerror(err));
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continue;
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}
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jstring jnetmask = (*env)->NewStringUTF(env, buf);
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(*env)->SetObjectArrayElement(env, ret, ji++, jname);
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(*env)->SetObjectArrayElement(env, ret, ji++, jaddr);
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(*env)->SetObjectArrayElement(env, ret, ji++, jnetmask);
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}
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if (sd >= 0)
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close (sd);
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return ret;
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}
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