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Fix #192 - Correctly unescape search parameters in the server when they 

have a trailing comma or an escaped backslash
This commit is contained in:
James Agnew 2015-08-05 12:57:04 -04:00
parent 48bd5e802b
commit fd91ce76ce
5 changed files with 139 additions and 26 deletions
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3
.travis.yml
View File

@ -14,12 +14,11 @@ cache:
install: /bin/true
# This seems to be required to get travis to set Xmx4g, per https://github.com/travis-ci/travis-ci/issues/3893
before_script:
- export MAVEN_SKIP_RC=true
script:
- export MAVEN_OPTS="-XX:MaxPermSize=512m -Xmx4g"
- mvn -B clean install && cd hapi-fhir-cobertura && mvn -B -DTRAVIS_JOB_ID=$TRAVIS_JOB_ID -P COBERTURA clean cobertura:cobertura coveralls:report
# - mvn -B clean install -Dcobertura.skip=true && mvn -B -DTRAVIS_JOB_ID=$TRAVIS_JOB_ID -P COBERTURA clean cobertura:cobertura coveralls:report

50
hapi-fhir-base/src/main/java/ca/uhn/fhir/rest/method/QualifiedParamList.java
View File

@ -1,5 +1,7 @@
package ca.uhn.fhir.rest.method;
import static org.apache.commons.lang3.StringUtils.isBlank;
/*
* #%L
* HAPI FHIR - Core Library
@ -68,28 +70,60 @@ public class QualifiedParamList extends ArrayList<String> {
return retVal;
}
public static QualifiedParamList splitQueryStringByCommasIgnoreEscape(String theQualifier, String theParams) {
QualifiedParamList retVal = new QualifiedParamList();
retVal.setQualifier(theQualifier);
StringTokenizer tok = new StringTokenizer(theParams,",");
StringTokenizer tok = new StringTokenizer(theParams, ",", true);
String prev = null;
while (tok.hasMoreElements()) {
String str = tok.nextToken();
if (prev!=null&&prev.endsWith("\\")) {
int idx = retVal.size()-1;
String existing = retVal.get(idx);
retVal.set(idx, existing.substring(0, existing.length()-1) + "," + str);
}else {
retVal.add(str);
if (isBlank(str)) {
prev = null;
continue;
}
if (str.equals(",")) {
if (countTrailingSlashes(prev) % 2 == 1) {
int idx = retVal.size() - 1;
String existing = retVal.get(idx);
prev = existing.substring(0, existing.length() - 1) + ',';
retVal.set(idx, prev);
} else {
prev = null;
}
continue;
}
if (prev != null && prev.length() > 0 && prev.charAt(prev.length() - 1) == ',') {
int idx = retVal.size() - 1;
String existing = retVal.get(idx);
prev = existing + str;
retVal.set(idx, prev);
} else {
retVal.add(str);
prev = str;
}
}
return retVal;
}
private static int countTrailingSlashes(String theString) {
if(theString==null) {
return 0;
}
int retVal = 0;
for (int i = theString.length() - 1; i >= 0; i--) {
char nextChar = theString.charAt(i);
if (nextChar != '\\') {
break;
} else {
retVal++;
}
}
return retVal;
}
}

1
hapi-fhir-base/src/main/java/ca/uhn/fhir/rest/param/ParameterUtil.java
View File

@ -255,6 +255,7 @@ public class ParameterUtil {
case '$':
case ',':
case '|':
case '\\':
continue;
default:
b.append(next);

78
hapi-fhir-structures-dstu/src/test/java/ca/uhn/fhir/rest/server/TokenParameterTest.java
View File

@ -49,16 +49,90 @@ public class TokenParameterTest {
* Test #192
*/
@Test
public void testOrListWithEscapedValue() throws Exception {
public void testOrListWithEscapedValue1() throws Exception {
HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient?identifier=" + UrlUtil.escape("system|code-include-but-not-end-with-comma\\,suffix"));
HttpResponse status = ourClient.execute(httpGet);
IOUtils.closeQuietly(status.getEntity().getContent());
assertEquals(200, status.getStatusLine().getStatusCode());
assertEquals("system", ourLastOrList.getListAsCodings().get(0).getSystemElement().getValue());
assertEquals("code-include-but-not-end-with-comma,suffix", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
assertEquals(1, ourLastOrList.getListAsCodings().size());
}
/**
* Test #192
*/
@Test
public void testOrListWithEscapedValue2() throws Exception {
HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient?identifier=" + UrlUtil.escape("system|code-include-end-with-comma\\,"));
HttpResponse status = ourClient.execute(httpGet);
IOUtils.closeQuietly(status.getEntity().getContent());
assertEquals(200, status.getStatusLine().getStatusCode());
assertEquals(1, ourLastOrList.getListAsCodings().size());
assertEquals("system", ourLastOrList.getListAsCodings().get(0).getSystemElement().getValue());
assertEquals("code-include-but-not-end-with-comma,suffix", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
assertEquals("code-include-end-with-comma,", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
}
/**
* Test #192
*/
@Test
public void testOrListWithEscapedValue3() throws Exception {
HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient?identifier=" + UrlUtil.escape("system|code-include-end-with-comma1,system|code-include-end-with-comma2,,,,,"));
HttpResponse status = ourClient.execute(httpGet);
IOUtils.closeQuietly(status.getEntity().getContent());
assertEquals(200, status.getStatusLine().getStatusCode());
assertEquals(2, ourLastOrList.getListAsCodings().size());
assertEquals("system", ourLastOrList.getListAsCodings().get(0).getSystemElement().getValue());
assertEquals("code-include-end-with-comma1", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
assertEquals("system", ourLastOrList.getListAsCodings().get(1).getSystemElement().getValue());
assertEquals("code-include-end-with-comma2", ourLastOrList.getListAsCodings().get(1).getCodeElement().getValue());
}
/**
* Test #192
*/
@Test
public void testOrListWithEscapedValue4() throws Exception {
HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient?identifier=" + UrlUtil.escape("\\,\\,\\,value1\\,\\,\\,with\\,\\,\\,commas\\,\\,\\,,,,\\,\\,\\,value2\\,\\,\\,with\\,\\,\\,commas,,,\\,"));
HttpResponse status = ourClient.execute(httpGet);
IOUtils.closeQuietly(status.getEntity().getContent());
assertEquals(200, status.getStatusLine().getStatusCode());
assertEquals(null, ourLastOrList.getListAsCodings().get(0).getSystemElement().getValue());
assertEquals(",,,value1,,,with,,,commas,,,", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
assertEquals(null, ourLastOrList.getListAsCodings().get(1).getSystemElement().getValue());
assertEquals(",,,value2,,,with,,,commas", ourLastOrList.getListAsCodings().get(1).getCodeElement().getValue());
assertEquals(null, ourLastOrList.getListAsCodings().get(2).getSystemElement().getValue());
assertEquals(",", ourLastOrList.getListAsCodings().get(2).getCodeElement().getValue());
assertEquals(3, ourLastOrList.getListAsCodings().size());
}
/**
* Test #192
*/
@Test
public void testOrListWithEscapedValue5() throws Exception {
HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient?identifier=" + UrlUtil.escape("A\\\\,B,\\$"));
HttpResponse status = ourClient.execute(httpGet);
IOUtils.closeQuietly(status.getEntity().getContent());
assertEquals(200, status.getStatusLine().getStatusCode());
assertEquals(null, ourLastOrList.getListAsCodings().get(0).getSystemElement().getValue());
assertEquals("A\\", ourLastOrList.getListAsCodings().get(0).getCodeElement().getValue());
assertEquals(null, ourLastOrList.getListAsCodings().get(1).getSystemElement().getValue());
assertEquals("B", ourLastOrList.getListAsCodings().get(1).getCodeElement().getValue());
assertEquals(null, ourLastOrList.getListAsCodings().get(2).getSystemElement().getValue());
assertEquals("$", ourLastOrList.getListAsCodings().get(2).getCodeElement().getValue());
assertEquals(3, ourLastOrList.getListAsCodings().size());
}
@AfterClass

5
src/changes/changes.xml
View File

@ -67,6 +67,11 @@
<action type="add">
JPA server and generic client now both support the _tag search parameter
</action>
<action type="fix" issue="192">
Server was not correctly unescaping URL parameter values with
a trailing comma or an escaped backslash. Thanks to GitHub user
@SherryH for all of her help in diagnosing this issue!
</action>
</release>
<release version="1.1" date="2015-07-13">
<action type="add">