org.jruby.ext.openssl.impl.SMIME Maven / Gradle / Ivy
/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2008 Ola Bini
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
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***** END LICENSE BLOCK *****/
package org.jruby.ext.openssl.impl;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/** SMIME methods for PKCS7
*
* @author Ola Bini
*/
public class SMIME {
public final static int MAX_SMLEN = 1024;
public final static byte[] NEWLINE = new byte[]{'\r','\n'};
private Mime mime;
public SMIME() {
this(Mime.DEFAULT);
}
public SMIME(Mime mime) {
this.mime = mime;
}
private static boolean equals(byte[] first, int firstIndex, byte[] second, int secondIndex, int length) {
int len = length;
for(int i=firstIndex,
j=secondIndex,
flen=first.length,
slen=second.length;
i0;
i++, j++, len--) {
if(first[i] != second[j]) {
return false;
}
}
return len == 0;
}
/* c: static strip_eol
*
*/
public static boolean stripEol(byte[] linebuf, int[] plen) {
int len = plen[0];
boolean isEol = false;
for(int p = len - 1; len > 0; len--, p--) {
byte c = linebuf[p];
if(c == '\n') {
isEol = true;
} else if(c != '\r') {
break;
}
}
plen[0] = len;
return isEol;
}
/* c: SMIME_text
*
*/
public void text(BIO input, BIO output) {
// char iobuf[4096];
// int len;
// STACK_OF(MIME_HEADER) *headers;
// MIME_HEADER *hdr;
// if (!(headers = mime_parse_hdr(in))) {
// PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_MIME_PARSE_ERROR);
// return 0;
// }
// if(!(hdr = mime_hdr_find(headers, "content-type")) || !hdr->value) {
// PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_MIME_NO_CONTENT_TYPE);
// sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
// return 0;
// }
// if (strcmp (hdr->value, "text/plain")) {
// PKCS7err(PKCS7_F_SMIME_TEXT,PKCS7_R_INVALID_MIME_TYPE);
// ERR_add_error_data(2, "type: ", hdr->value);
// sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
// return 0;
// }
// sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
// while ((len = BIO_read(in, iobuf, sizeof(iobuf))) > 0)
// BIO_write(out, iobuf, len);
// return 1;
}
/* c: static mime_bound_check
*
*/
private int boundCheck(byte[] line, int linelen, byte[] bound, int blen) {
if(linelen == -1) {
linelen = line.length;
}
if(blen == -1) {
blen = bound.length;
}
// Quickly eliminate if line length too short
if(blen + 2 > linelen) {
return 0;
}
if(line[0] == '-' &&
line[1] == '-' &&
equals(line, 2, bound, 0, blen)) {
if(line.length>=(blen+4) &&
line[2 + blen] == '-' &&
line[2 + blen + 1] == '-') {
return 2;
} else {
return 1;
}
}
return 0;
}
/* c: B64_read_PKCS7
*
*/
public PKCS7 readPKCS7Base64(BIO bio) throws IOException, PKCS7Exception {
BIO bio64 = BIO.base64Filter(bio);
return PKCS7.fromASN1(bio64);
}
/* c: static multi_split
*
*/
private List multiSplit(BIO bio, byte[] bound) throws IOException {
List parts = new ArrayList();
byte[] linebuf = new byte[MAX_SMLEN];
int blen = bound.length;
boolean eol = false;
int len = 0;
int part = 0;
int state = 0;
boolean first = true;
BIO bpart = null;
while((len = bio.gets(linebuf, MAX_SMLEN)) > 0) {
state = boundCheck(linebuf, len, bound, blen);
if(state == 1) {
first = true;
part++;
} else if(state == 2) {
parts.add(bpart);
return parts;
} else if(part != 0) {
// strip CR+LF from linebuf
int[] tmp = new int[] {len};
boolean nextEol = stripEol(linebuf, tmp);
len = tmp[0];
if(first) {
first = false;
if(bpart != null) {
parts.add(bpart);
}
bpart = BIO.mem();
bpart.setMemEofReturn(0);
} else if(eol) {
bpart.write(NEWLINE, 0, 2);
}
eol = nextEol;
if(len != 0) {
bpart.write(linebuf, 0, len);
}
}
}
return parts;
}
/* c: SMIME_read_PKCS7
*
*/
public PKCS7 readPKCS7(BIO bio, BIO[] bcont) throws IOException, PKCS7Exception {
if(bcont != null && bcont.length > 0) {
bcont[0] = null;
}
List headers = mime.parseHeaders(bio);
if(headers == null) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_MIME_PARSE_ERROR);
}
MimeHeader hdr = mime.findHeader(headers, "content-type");
if(hdr == null || hdr.getValue() == null) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_NO_CONTENT_TYPE);
}
if("multipart/signed".equals(hdr.getValue())) {
MimeParam prm = mime.findParam(hdr, "boundary");
if(prm == null || prm.getParamValue() == null) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_NO_MULTIPART_BOUNDARY);
}
byte[] boundary = null;
try {
boundary = prm.getParamValue().getBytes("ISO8859-1");
} catch(Exception e) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_NO_MULTIPART_BOUNDARY, e);
}
List parts = multiSplit(bio, boundary);
if(parts == null || parts.size() != 2) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_NO_MULTIPART_BODY_FAILURE);
}
BIO p7in = parts.get(1);
headers = mime.parseHeaders(p7in);
if(headers == null) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_MIME_SIG_PARSE_ERROR);
}
hdr = mime.findHeader(headers, "content-type");
if(hdr == null || hdr.getValue() == null) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_NO_SIG_CONTENT_TYPE);
}
if(!"application/x-pkcs7-signature".equals(hdr.getValue()) &&
!"application/pkcs7-signature".equals(hdr.getValue()) &&
!"application/x-pkcs7-mime".equals(hdr.getValue()) &&
!"application/pkcs7-mime".equals(hdr.getValue())) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_SIG_INVALID_MIME_TYPE, "type: " + hdr.getValue());
}
PKCS7 p7 = readPKCS7Base64(p7in);
if(bcont != null && bcont.length>0) {
bcont[0] = parts.get(0);
}
return p7;
}
if(!"application/x-pkcs7-mime".equals(hdr.getValue()) &&
!"application/pkcs7-mime".equals(hdr.getValue())) {
throw new PKCS7Exception(PKCS7.F_SMIME_READ_PKCS7, PKCS7.R_INVALID_MIME_TYPE, "type: " + hdr.getValue());
}
return readPKCS7Base64(bio);
}
}
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