| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the OpenSSL license (the "License"). You may not use |
| 5 | * this file except in compliance with the License. You can obtain a copy |
| 6 | * in the file LICENSE in the source distribution or at |
| 7 | * https://www.openssl.org/source/license.html |
| 8 | */ |
| 9 | |
| 10 | #include <stdio.h> |
| 11 | #include "internal/cryptlib.h" |
| 12 | #include <openssl/asn1t.h> |
| 13 | #include <openssl/x509.h> |
| 14 | #include "crypto/x509.h" |
| 15 | |
| 16 | /*- |
| 17 | * X509_REQ_INFO is handled in an unusual way to get round |
| 18 | * invalid encodings. Some broken certificate requests don't |
| 19 | * encode the attributes field if it is empty. This is in |
| 20 | * violation of PKCS#10 but we need to tolerate it. We do |
| 21 | * this by making the attributes field OPTIONAL then using |
| 22 | * the callback to initialise it to an empty STACK. |
| 23 | * |
| 24 | * This means that the field will be correctly encoded unless |
| 25 | * we NULL out the field. |
| 26 | * |
| 27 | * As a result we no longer need the req_kludge field because |
| 28 | * the information is now contained in the attributes field: |
| 29 | * 1. If it is NULL then it's the invalid omission. |
| 30 | * 2. If it is empty it is the correct encoding. |
| 31 | * 3. If it is not empty then some attributes are present. |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
| 36 | void *exarg) |
| 37 | { |
| 38 | X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; |
| 39 | |
| 40 | if (operation == ASN1_OP_NEW_POST) { |
| 41 | rinf->attributes = sk_X509_ATTRIBUTE_new_null(); |
| 42 | if (!rinf->attributes) |
| 43 | return 0; |
| 44 | } |
| 45 | return 1; |
| 46 | } |
| 47 | |
| 48 | ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { |
| 49 | ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), |
| 50 | ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), |
| 51 | ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), |
| 52 | /* This isn't really OPTIONAL but it gets round invalid |
| 53 | * encodings |
| 54 | */ |
| 55 | ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) |
| 56 | } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) |
| 57 | |
| 58 | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) |
| 59 | |
| 60 | ASN1_SEQUENCE_ref(X509_REQ, 0) = { |
| 61 | ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO), |
| 62 | ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR), |
| 63 | ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) |
| 64 | } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) |
| 65 | |
| 66 | IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) |
| 67 | |
| 68 | IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) |