AbstractImageServlet.java
5.81 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* com.day.cq.commons.SlingRepositoryException
* com.day.image.Layer
* javax.jcr.Node
* javax.jcr.Property
* javax.jcr.RepositoryException
* javax.servlet.ServletException
* javax.servlet.ServletOutputStream
* org.apache.sling.api.SlingHttpServletRequest
* org.apache.sling.api.SlingHttpServletResponse
* org.apache.sling.api.request.RequestPathInfo
* org.apache.sling.api.resource.Resource
* org.apache.sling.api.resource.ResourceResolver
* org.apache.sling.api.resource.ValueMap
* org.apache.sling.api.servlets.SlingSafeMethodsServlet
* org.slf4j.Logger
* org.slf4j.LoggerFactory
*/
package com.day.cq.extwidget.servlets;
import com.day.cq.commons.SlingRepositoryException;
import com.day.image.Layer;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Calendar;
import javax.jcr.Node;
import javax.jcr.Property;
import javax.jcr.RepositoryException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.request.RequestPathInfo;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.api.servlets.SlingSafeMethodsServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class AbstractImageServlet
extends SlingSafeMethodsServlet {
private static final Logger log = LoggerFactory.getLogger(AbstractImageServlet.class);
protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {
try {
if (this.checkModifiedSince(request, response)) {
return;
}
String type = this.getImageType(request.getRequestPathInfo().getExtension());
if (type == null) {
response.sendError(404, "Image type not supported");
return;
}
ImageContext context = new ImageContext(request, type);
Layer layer = this.createLayer(context);
if (layer == null) {
response.sendError(404);
return;
}
this.writeLayer(request, response, context, layer);
}
catch (RepositoryException e) {
throw new SlingRepositoryException(e);
}
}
protected void writeLayer(SlingHttpServletRequest request, SlingHttpServletResponse response, ImageContext context, Layer layer) throws IOException, RepositoryException {
response.setContentType(context.requestImageType);
int size = layer.getHeight() * layer.getWidth();
if (size < 1048576) {
ByteArrayOutputStream out = new ByteArrayOutputStream(size);
layer.write(context.requestImageType, this.getImageQuality(), (OutputStream)out);
byte[] bytes = out.toByteArray();
response.setContentLength(bytes.length);
response.getOutputStream().write(bytes);
} else {
layer.write(context.requestImageType, this.getImageQuality(), (OutputStream)response.getOutputStream());
}
}
protected String getImageType(String ext) {
if ("png".equals(ext)) {
return "image/png";
}
if ("gif".equals(ext)) {
return "image/gif";
}
if ("jpg".equals(ext) || "jpeg".equals(ext)) {
return "image/jpeg";
}
return null;
}
protected double getImageQuality() {
return 1.0;
}
protected boolean checkModifiedSince(SlingHttpServletRequest req, SlingHttpServletResponse resp) {
Node node = (Node)req.getResource().adaptTo(Node.class);
Calendar lastMod = null;
try {
while (node.getDepth() > 0 && lastMod == null) {
if (node.hasProperty("jcr:lastModified")) {
lastMod = node.getProperty("jcr:lastModified").getDate();
continue;
}
if (node.hasProperty("cq:lastModified")) {
lastMod = node.getProperty("cq:lastModified").getDate();
continue;
}
node = node.getParent();
}
}
catch (RepositoryException e) {
log.warn("Error while searching for last modified property: " + (Object)e);
return false;
}
if (lastMod != null) {
long ims;
long modTime = lastMod.getTimeInMillis() / 1000;
if (modTime <= (ims = req.getDateHeader("If-Modified-Since") / 1000)) {
resp.setStatus(304);
return true;
}
resp.setDateHeader("Last-Modified", lastMod.getTimeInMillis());
}
return false;
}
protected abstract Layer createLayer(ImageContext var1) throws RepositoryException, IOException;
public static class ImageContext {
public final SlingHttpServletRequest request;
public final Resource resource;
public final ResourceResolver resolver;
public final Node node;
public final ValueMap properties;
public final String requestImageType;
public ImageContext(SlingHttpServletRequest request, String type) {
this.request = request;
this.resource = request.getResource();
this.resolver = request.getResourceResolver();
this.node = (Node)this.resource.adaptTo(Node.class);
ValueMap props = (ValueMap)this.resource.adaptTo(ValueMap.class);
this.properties = props == null ? ValueMap.EMPTY : props;
this.requestImageType = type;
}
}
}