Introduce JSchProxyException to replace generic JschException in Proxy implementations

src/main/java/com/jcraft/jsch/JSchProxyException.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public class JSchProxyException extends JSchException {
+  private static final long serialVersionUID = -1L;
+
+  public JSchProxyException(String s) {
+    super(s);
+  }
+
+  public JSchProxyException(String s, Throwable e) {
+    super(s, e);
+  }
+}

src/main/java/com/jcraft/jsch/ProxyHTTP.java

@@ -163,7 +163,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
       } catch (Exception eee) {
       }
       String message = "ProxyHTTP: " + e.toString();
-      throw new JSchException(message, e);
+      throw new JSchProxyException(message, e);
     }
   }
 

src/main/java/com/jcraft/jsch/ProxySOCKS4.java

@@ -120,7 +120,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
           buf[index++] = byteAddress[i];
         }
       } catch (UnknownHostException uhe) {
-        throw new JSchException("ProxySOCKS4: " + uhe.toString(), uhe);
+        throw new JSchProxyException("ProxySOCKS4: " + uhe.toString(), uhe);
       }
 
       if (user != null) {
@@ -156,20 +156,20 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
       while (s < len) {
         int i = in.read(buf, s, len - s);
         if (i <= 0) {
-          throw new JSchException("ProxySOCKS4: stream is closed");
+          throw new JSchProxyException("ProxySOCKS4: stream is closed");
         }
         s += i;
       }
       if (buf[0] != 0) {
-        throw new JSchException("ProxySOCKS4: server returns VN " + buf[0]);
+        throw new JSchProxyException("ProxySOCKS4: server returns VN " + buf[0]);
       }
       if (buf[1] != 90) {
         try {
           socket.close();
         } catch (Exception eee) {
         }
         String message = "ProxySOCKS4: server returns CD " + buf[1];
-        throw new JSchException(message);
+        throw new JSchProxyException(message);
       }
     } catch (RuntimeException e) {
       throw e;
@@ -179,7 +179,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
           socket.close();
       } catch (Exception eee) {
       }
-      throw new JSchException("ProxySOCKS4: " + e.toString(), e);
+      throw new JSchProxyException("ProxySOCKS4: " + e.toString(), e);
     }
   }
 

src/main/java/com/jcraft/jsch/ProxySOCKS5.java

@@ -177,7 +177,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
           socket.close();
         } catch (Exception eee) {
         }
-        throw new JSchException("fail in SOCKS5 proxy");
+        throw new JSchProxyException("fail in SOCKS5 proxy");
       }
 
       /*
@@ -239,7 +239,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
           socket.close();
         } catch (Exception eee) {
         }
-        throw new JSchException("ProxySOCKS5: server returns " + buf[1]);
+        throw new JSchProxyException("ProxySOCKS5: server returns " + buf[1]);
       }
 
       switch (buf[3] & 0xff) {
@@ -268,7 +268,7 @@ public void connect(SocketFactory socket_factory, String host, int port, int tim
       } catch (Exception eee) {
       }
       String message = "ProxySOCKS5: " + e.toString();
-      throw new JSchException(message, e);
+      throw new JSchProxyException(message, e);
     }
   }
 
@@ -312,7 +312,7 @@ private void fill(InputStream in, byte[] buf, int len) throws JSchException, IOE
     while (s < len) {
       int i = in.read(buf, s, len - s);
       if (i <= 0) {
-        throw new JSchException("ProxySOCKS5: stream is closed");
+        throw new JSchProxyException("ProxySOCKS5: stream is closed");
       }
       s += i;
     }