/*
* Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#ifdef _WIN32
/*
* Win* needs this include. However, Linux and Solaris do not.
* Having this include on Solaris SPARC breaks having non US-ASCII
* characters in the value of the Premain-Class attribute.
*/
#include <ctype.h>
#endif /* _WIN32 */
#include <string.h>
#include <stdlib.h>
#include "jni.h"
#include "manifest_info.h"
#include "JarFacade.h"
typedef struct {
jarAttribute* head;
jarAttribute* tail;
} iterationContext;
static void
doAttribute(const char* name, const char* value, void* user_data) {
iterationContext* context = (iterationContext*) user_data;
jarAttribute* attribute = (jarAttribute*)malloc(sizeof(jarAttribute));
if (attribute != NULL) {
attribute->name = strdup(name);
if (attribute->name == NULL) {
free(attribute);
} else {
char *begin = (char *)value;
char *end;
size_t value_len;
/* skip any leading white space */
while (isspace(*begin)) {
begin++;
}
/* skip any trailing white space */
end = &begin[strlen(begin)];
while (end > begin && isspace(end[-1])) {
end--;
}
if (begin == end) {
/* no value so skip this attribute */
free(attribute->name);
free(attribute);
return;
}
value_len = (size_t)(end - begin);
attribute->value = malloc(value_len + 1);
if (attribute->value == NULL) {
free(attribute->name);
free(attribute);
} else {
/* save the value without leading or trailing whitespace */
strncpy(attribute->value, begin, value_len);
attribute->value[value_len] = '\0';
attribute->next = NULL;
if (context->head == NULL) {
context->head = attribute;
} else {
context->tail->next = attribute;
}
context->tail = attribute;
}
}
}
}
/*
* Return a list of attributes from the main section of the given JAR
* file. Returns NULL if there is an error or there aren't any attributes.
*/
jarAttribute*
readAttributes(const char* jarfile)
{
int rc;
iterationContext context = { NULL, NULL };
rc = JLI_ManifestIterate(jarfile, doAttribute, (void*)&context);
if (rc == 0) {
return context.head;
} else {
freeAttributes(context.head);
return NULL;
}
}
/*
* Free a list of attributes
*/
void
freeAttributes(jarAttribute* head) {
while (head != NULL) {
jarAttribute* next = (jarAttribute*)head->next;
free(head->name);
free(head->value);
free(head);
head = next;
}
}
/*
* Get the value of an attribute in an attribute list. Returns NULL
* if attribute not found.
*/
char*
getAttribute(const jarAttribute* attributes, const char* name) {
while (attributes != NULL) {
if (strcasecmp(attributes->name, name) == 0) {
return attributes->value;
}
attributes = (jarAttribute*)attributes->next;
}
return NULL;
}