11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <sys/socket.h>
31
32 #include "jvm.h"
33 #include "jni_util.h"
34 #include "net_util.h"
35
36 #include "java_net_SocketInputStream.h"
37
38
39 /************************************************************************
40 * SocketInputStream
41 */
42
43 static jfieldID IO_fd_fdID;
44
45 /*
46 * Class: java_net_SocketInputStream
47 * Method: init
48 * Signature: ()V
49 */
50 JNIEXPORT void JNICALL
51 Java_java_net_SocketInputStream_init(JNIEnv *env, jclass cls) {
52 IO_fd_fdID = NET_GetFileDescriptorID(env);
53 }
54
55 /*
56 * Class: java_net_SocketInputStream
57 * Method: socketRead0
58 * Signature: (Ljava/io/FileDescriptor;[BIII)I
59 */
60 JNIEXPORT jint JNICALL
61 Java_java_net_SocketInputStream_socketRead0(JNIEnv *env, jobject this,
62 jobject fdObj, jbyteArray data,
63 jint off, jint len, jint timeout)
64 {
65 char BUF[MAX_BUFFER_LEN];
66 char *bufP;
67 jint fd, nread;
68
69 if (IS_NULL(fdObj)) {
70 /* shouldn't this be a NullPointerException? -br */
71 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
72 "Socket closed");
73 return -1;
74 } else {
81 return -1;
82 }
83 }
84
85 /*
86 * If the read is greater than our stack allocated buffer then
87 * we allocate from the heap (up to a limit)
88 */
89 if (len > MAX_BUFFER_LEN) {
90 if (len > MAX_HEAP_BUFFER_LEN) {
91 len = MAX_HEAP_BUFFER_LEN;
92 }
93 bufP = (char *)malloc((size_t)len);
94 if (bufP == NULL) {
95 bufP = BUF;
96 len = MAX_BUFFER_LEN;
97 }
98 } else {
99 bufP = BUF;
100 }
101
102 if (timeout) {
103 nread = NET_Timeout(fd, timeout);
104 if (nread <= 0) {
105 if (nread == 0) {
106 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
107 "Read timed out");
108 } else if (nread == -1) {
109 if (errno == EBADF) {
110 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed");
111 } else if (errno == ENOMEM) {
112 JNU_ThrowOutOfMemoryError(env, "NET_Timeout native heap allocation failed");
113 } else {
114 JNU_ThrowByNameWithMessageAndLastError
115 (env, JNU_JAVANETPKG "SocketException", "select/poll failed");
116 }
117 }
118 if (bufP != BUF) {
119 free(bufP);
120 }
121 return -1;
122 }
123 }
124
125 nread = NET_Read(fd, bufP, len);
126
127 if (nread <= 0) {
128 if (nread < 0) {
129
130 switch (errno) {
131 case ECONNRESET:
132 case EPIPE:
133 JNU_ThrowByName(env, "sun/net/ConnectionResetException",
134 "Connection reset");
135 break;
136
137 case EBADF:
138 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
139 "Socket closed");
140 break;
141
142 case EINTR:
143 JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
144 "Operation interrupted");
145 break;
146
147 default:
148 JNU_ThrowByNameWithMessageAndLastError
149 (env, JNU_JAVANETPKG "SocketException", "Read failed");
150 }
151 }
152 } else {
153 (*env)->SetByteArrayRegion(env, data, off, nread, (jbyte *)bufP);
154 }
155
156 if (bufP != BUF) {
157 free(bufP);
158 }
159 return nread;
160 }
|
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <sys/socket.h>
31 #include <sys/time.h>
32 #include "jvm.h"
33 #include "jni_util.h"
34 #include "net_util.h"
35
36 #include "java_net_SocketInputStream.h"
37
38 /************************************************************************
39 * SocketInputStream
40 */
41
42 static jfieldID IO_fd_fdID;
43
44 /*
45 * Class: java_net_SocketInputStream
46 * Method: init
47 * Signature: ()V
48 */
49 JNIEXPORT void JNICALL
50 Java_java_net_SocketInputStream_init(JNIEnv *env, jclass cls) {
51 IO_fd_fdID = NET_GetFileDescriptorID(env);
52 }
53
54 static long getCurrentTime() {
55 struct timeval time;
56 gettimeofday(&time, NULL);
57 return (time.tv_sec * 1000 + time.tv_usec / 1000);
58 }
59
60 static int NET_ReadWithTimeout(JNIEnv *env, int fd, char *bufP, int len, long timeout) {
61 int result;
62 long prevtime = getCurrentTime(), newtime;
63 while (timeout > 0) {
64 result = NET_TimeoutWithCurrentTime(fd, timeout, prevtime);
65 if (result <= 0) {
66 if (result == 0) {
67 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", "Read timed out");
68 } else if (result == -1) {
69 if (errno == EBADF) {
70 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed");
71 } else if (errno == ENOMEM) {
72 JNU_ThrowOutOfMemoryError(env, "NET_Timeout native heap allocation failed");
73 } else {
74 JNU_ThrowByNameWithMessageAndLastError
75 (env, JNU_JAVANETPKG "SocketException", "select/poll failed");
76 }
77 }
78 return -1;
79 }
80 result = NET_NonBlockingRead(fd, bufP, len);
81 if (result == -1 && ((errno == EAGAIN) || (errno == EWOULDBLOCK))) {
82 newtime = getCurrentTime();
83 timeout -= newtime - prevtime;
84 if (timeout > 0) {
85 prevtime = newtime;
86 }
87 } else {
88 break;
89 }
90 }
91 return result;
92 }
93
94 /*
95 * Class: java_net_SocketInputStream
96 * Method: socketRead0
97 * Signature: (Ljava/io/FileDescriptor;[BIII)I
98 */
99 JNIEXPORT jint JNICALL
100 Java_java_net_SocketInputStream_socketRead0(JNIEnv *env, jobject this,
101 jobject fdObj, jbyteArray data,
102 jint off, jint len, jint timeout)
103 {
104 char BUF[MAX_BUFFER_LEN];
105 char *bufP;
106 jint fd, nread;
107
108 if (IS_NULL(fdObj)) {
109 /* shouldn't this be a NullPointerException? -br */
110 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
111 "Socket closed");
112 return -1;
113 } else {
120 return -1;
121 }
122 }
123
124 /*
125 * If the read is greater than our stack allocated buffer then
126 * we allocate from the heap (up to a limit)
127 */
128 if (len > MAX_BUFFER_LEN) {
129 if (len > MAX_HEAP_BUFFER_LEN) {
130 len = MAX_HEAP_BUFFER_LEN;
131 }
132 bufP = (char *)malloc((size_t)len);
133 if (bufP == NULL) {
134 bufP = BUF;
135 len = MAX_BUFFER_LEN;
136 }
137 } else {
138 bufP = BUF;
139 }
140 if (timeout) {
141 nread = NET_ReadWithTimeout(env, fd, bufP, len, timeout);
142 } else {
143 nread = NET_Read(fd, bufP, len);
144 }
145 if (nread <= 0) {
146 if (nread < 0) {
147
148 switch (errno) {
149 case ECONNRESET:
150 case EPIPE:
151 JNU_ThrowByName(env, "sun/net/ConnectionResetException",
152 "Connection reset");
153 break;
154
155 case EBADF:
156 JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
157 "Socket closed");
158 break;
159
160 case EINTR:
161 JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
162 "Operation interrupted");
163 break;
164 default:
165 JNU_ThrowByNameWithMessageAndLastError
166 (env, JNU_JAVANETPKG "SocketException", "Read failed");
167 }
168 }
169 } else {
170 (*env)->SetByteArrayRegion(env, data, off, nread, (jbyte *)bufP);
171 }
172
173 if (bufP != BUF) {
174 free(bufP);
175 }
176 return nread;
177 }
|