/*
* Class: org_newsclub_net_unix_NativeUnixSocket
* Method: connect
* Signature: (Ljava/lang/String;Ljava/io/FileDescriptor;)V
*/
JNIEXPORT void JNICALL Java_org_newsclub_net_unix_NativeUnixSocket_connect
(JNIEnv * env, jclass clazz, jstring file, jobject fd, jboolean abstract, jboolean dgram) {
const char* socketFile = (*env)->GetStringUTFChars(env, file, NULL);
if(socketFile == NULL) {
return; // OOME
}
if(strlen(socketFile) >= 104) {
(*env)->ReleaseStringUTFChars(env, file, socketFile);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, "Pathname too long for socket", file);
return;
}
int sockType = SOCK_STREAM;
if ( dgram == JNI_TRUE ) {
sockType = SOCK_DGRAM;
}
int socketHandle = socket(AF_UNIX, sockType, 0);
if(socketHandle == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
struct sockaddr_un su;
memset(&su, 0, sizeof(struct sockaddr_un));
su.sun_family = AF_UNIX;
#ifdef junixsocket_have_sun_len
su.sun_len = (sizeof(su) - sizeof(su.sun_path) + strlen(su.sun_path));
#endif
size_t pathlen = 0;
if ( abstract == JNI_TRUE ) {
strcpy(su.sun_path+1, socketFile);
pathlen = strlen(socketFile) + 1;
} else {
strcpy(su.sun_path, socketFile);
pathlen = strlen(socketFile);
}
(*env)->ReleaseStringUTFChars(env, file, socketFile);
socklen_t suLength = pathlen + sizeof(su.sun_family)
#ifdef junixsocket_have_sun_len
+ sizeof(su.sun_len)
#endif
;
int ret = connect(socketHandle, (struct sockaddr *)&su, suLength);
if(ret == -1) {
close(socketHandle);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
org_newsclub_net_unix_NativeUnixSocket_initFD(env, fd, socketHandle);
}
/*
* Class: org_newsclub_net_unix_NativeUnixSocket
* Method: bind
* Signature: (Ljava/lang/String;Ljava/io/FileDescriptor;I)V
*/
JNIEXPORT void JNICALL Java_org_newsclub_net_unix_NativeUnixSocket_bind
(JNIEnv * env, jclass clazz, jstring file, jobject fd, jint backlog) {
const char* socketFile = (*env)->GetStringUTFChars(env, file, NULL);
if(socketFile == NULL) {
return; // OOME
}
if(strlen(socketFile) >= 104) {
(*env)->ReleaseStringUTFChars(env, file, socketFile);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, "Pathname too long for socket", file);
return;
}
int serverHandle = socket(AF_UNIX, SOCK_STREAM, 0);
if(serverHandle == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env,strerror(errno), file);
return;
}
struct sockaddr_un su;
su.sun_family = AF_UNIX;
#ifndef __linux__
su.sun_len = (sizeof(su) - sizeof(su.sun_path) + strlen(su.sun_path));
#endif
strcpy(su.sun_path, socketFile);
(*env)->ReleaseStringUTFChars(env, file, socketFile);
socklen_t suLength = strlen(su.sun_path) + sizeof(su.sun_family)
#ifndef __linux__
+ sizeof(su.sun_len)
#endif
;
int bindRes = bind(serverHandle, (struct sockaddr *)&su, suLength);
if(bindRes == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
int chmodRes = chmod(su.sun_path, 0666);
if(chmodRes == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
}
int listenRes = listen(serverHandle, backlog);
if(listenRes == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
org_newsclub_net_unix_NativeUnixSocket_initFD(env, fd, serverHandle);
}
/*
* Class: org_newsclub_net_unix_NativeUnixSocket
* Method: accept
* Signature: (Ljava/lang/String;Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;)V
*/
JNIEXPORT void JNICALL Java_org_newsclub_net_unix_NativeUnixSocket_accept
(JNIEnv * env, jclass clazz, jstring file, jobject fdServer, jobject fd) {
const char* socketFile = (*env)->GetStringUTFChars(env, file, NULL);
if(socketFile == NULL) {
return; // OOME
}
if(strlen(socketFile) >= 104) {
(*env)->ReleaseStringUTFChars(env, file, socketFile);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, "Pathname too long for socket", file);
return;
}
int serverHandle = org_newsclub_net_unix_NativeUnixSocket_getFD(env, fdServer);
struct sockaddr_un su;
su.sun_family = AF_UNIX;
#ifndef __linux__
su.sun_len = (sizeof(su) - sizeof(su.sun_path) + strlen(su.sun_path));
#endif
strcpy(su.sun_path, socketFile);
(*env)->ReleaseStringUTFChars(env, file, socketFile);
socklen_t suLength = strlen(su.sun_path) + sizeof(su.sun_family)
#ifndef __linux__
+ sizeof(su.sun_len)
#endif
;
int socketHandle = accept(serverHandle, (struct sockaddr *)&su, &suLength);
if(socketHandle == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
org_newsclub_net_unix_NativeUnixSocket_initFD(env, fd, socketHandle);
return;
}
/*
* Class: org_newsclub_net_unix_NativeUnixSocket
* Method: bind
* Signature: (Ljava/lang/String;Ljava/io/FileDescriptor;I)V
*/
JNIEXPORT void JNICALL Java_org_newsclub_net_unix_NativeUnixSocket_bind
(JNIEnv * env, jclass clazz, jstring file, jobject fd, jint backlog, jboolean abstract, jboolean dgram) {
const char* socketFile = (*env)->GetStringUTFChars(env, file, NULL);
if(socketFile == NULL) {
return; // OOME
}
if(strlen(socketFile) >= 104) {
(*env)->ReleaseStringUTFChars(env, file, socketFile);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, "Pathname too long for socket", file);
return;
}
int sockType = SOCK_STREAM;
if ( dgram == JNI_TRUE ) {
sockType = SOCK_DGRAM;
}
int serverHandle = socket(AF_UNIX, sockType, 0);
if(serverHandle == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env,strerror(errno), file);
return;
}
// This block is only prophylactic, as SO_REUSEADDR seems not to work with AF_UNIX
int optVal = 1;
int ret = setsockopt(serverHandle, SOL_SOCKET, SO_REUSEADDR, &optVal, sizeof(optVal));
if(ret == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), NULL);
}
struct sockaddr_un su;
memset(&su, 0, sizeof(struct sockaddr_un));
su.sun_family = AF_UNIX;
#ifdef junixsocket_have_sun_len
su.sun_len = (sizeof(su) - sizeof(su.sun_path) + strlen(su.sun_path));
#endif
size_t pathlen = 0;
if ( abstract == JNI_TRUE ) {
strcpy(su.sun_path+1, socketFile);
pathlen = strlen(socketFile) + 1;
} else {
strcpy(su.sun_path, socketFile);
pathlen = strlen(socketFile);
}
(*env)->ReleaseStringUTFChars(env, file, socketFile);
socklen_t suLength = pathlen + sizeof(su.sun_family)
#ifdef junixsocket_have_sun_len
+ sizeof(su.sun_len)
#endif
;
int bindRes = bind(serverHandle, (struct sockaddr *)&su, suLength);
if(bindRes == -1) {
int myErr = errno;
if(errno == EADDRINUSE) {
// Let's check whether the address *really* is in use.
// Maybe it's just a dead reference
// if the given file exists, but is not a socket, ENOTSOCK is returned
// if access is denied, EACCESS is returned
ret = connect(serverHandle, (struct sockaddr *)&su, suLength);
if(ret == -1 && errno == ECONNREFUSED) {
// assume non-connected socket
close(serverHandle);
if(unlink(socketFile) == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env,strerror(errno), file);
return;
}
serverHandle = socket(AF_UNIX, SOCK_STREAM, 0);
if(serverHandle == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env,strerror(errno), file);
return;
}
bindRes = bind(serverHandle, (struct sockaddr *)&su, suLength);
if(bindRes == -1) {
close(serverHandle);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(myErr), file);
return;
}
} else {
close(serverHandle);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(myErr), file);
return;
}
} else {
close(serverHandle);
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(myErr), file);
return;
}
}
if ( abstract == JNI_FALSE ) {
int chmodRes = chmod(su.sun_path, 0666);
if(chmodRes == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
}
}
int listenRes = listen(serverHandle, backlog);
if(listenRes == -1) {
org_newsclub_net_unix_NativeUnixSocket_throwException(env, strerror(errno), file);
return;
}
org_newsclub_net_unix_NativeUnixSocket_initFD(env, fd, serverHandle);
}
