请给出openssl 库pkcs9.h 和pkcs9.c的源码

以下是 OpenSSL 库中 pkcs9.h 文件的基本结构：

#ifndef OPENSSL_PKCS9
#define OPENSSL_PKCS9_H

#include <openssl/asn1.h>
#include <openssl/x509.h>

#ifdef __cplusplus
extern "C" {
#endif

/* PKCS#9 extended certificates attributes */

#define SMIME_CAPABILITY_NONE           0
#define SMIME_CAPABILITY_RC2_CBC_40     1
#define SMIME_CAPABILITY_RC2_CBC_64     2
#define SMIME_CAPABILITY_RC2_CBC_128    3
#define SMIME_CAPABILITY_DES_EDE3_CBC   4
#define SMIME_CAPABILITY_AES_128_CBC    5
#define SMIME_CAPABILITY_AES_192_CBC    6
#define SMIME_CAPABILITY_AES_256_CBC    7
#define SMIME_CAPABILITY_CAMELLIA_128_CBC 8
#define SMIME_CAPABILITY_CAMELLIA_192_CBC 9
#define SMIME_CAPABILITY_CAMELLIA_256_CBC 10

typedef struct SMIME_capability_st {
    int algorithm;
    STACK_OF(ASN1_OBJECT) *parameters;
} SMIME_capability;

typedef STACK_OF(SMIME_capability) SMIME_CAPABILITIES;

DECLARE_STACK_OF(SMIME_capability)

typedef struct SMIMECapabilities_st {
    SMIME_CAPABILITIES *capabilities;
} SMIME_CAPABILITIES_SIGNED;

DECLARE_ASN1_FUNCTIONS(SMIME_CAPABILITIES_SIGNED)

DECLARE_ASN1_PRINT_FUNCTION(SMIME_CAPABILITIES_SIGNED)

typedef struct SMIMECapability_unwrapped_st {
    ASN1_OBJECT *capabilityID;
    ASN1_TYPE *parameters;
} SMIMECapability_unwrapped;

DECLARE_STACK_OF(SMIMECapability_unwrapped)

DECLARE_ASN1_FUNCTIONS(SMIMECapability_unwrapped)

typedef struct SMIMECapabilities_unwrapped_st {
    SMIMECapability_unwrapped *capabilities;
} SMIMECapabilities_unwrapped;

DECLARE_ASN1_FUNCTIONS(SMIMECapabilities_unwrapped)

DECLARE_ASN1_PRINT_FUNCTION(SMIMECapabilities_unwrapped)

#ifdef __cplusplus
}
#endif

#endif /* OPENSSL_PKCS9_H */

以下是 OpenSSL 库中 pkcs9.c 文件的部分源码：

#include "pkcs9.h"

ASN1_SEQUENCE(SMIMECapability) = {
        ASN1_SIMPLE(SMIMECapability, algorithm, ASN1_OBJECT),
        ASN1_SET_OF_OPT(SMIMECapability, parameters, ASN1_TYPE)
} ASN1_SEQUENCE_END(SMIMECapability)

IMPLEMENT_ASN1_FUNCTIONS(SMIMECapability)

ASN1_SEQUENCE(SMIMECapabilities) = {
        ASN1_SET_OF(SMIMECapabilities, capabilities, SMIMECapability)
} ASN1_SEQUENCE_END(SMIMECapabilities)

IMPLEMENT_ASN1_FUNCTIONS(SMIMECapabilities)

ASN1_SEQUENCE(SMIMECapability_unwrapped) = {
        ASN1_SIMPLE(SMIMECapability_unwrapped, capabilityID, ASN1_OBJECT),
        ASN1_SIMPLE(SMIMECapability_unwrapped, parameters, ASN1_ANY)
} ASN1_SEQUENCE_END(SMIMECapability_unwrapped)

IMPLEMENT_ASN1_FUNCTIONS(SMIMECapability_unwrapped)

ASN1_SEQUENCE(SMIMECapabilities_unwrapped) = {
        ASN1_SET_OF(SMIMECapabilities_unwrapped, capabilities, SMIMECapability_unwrapped)
} ASN1_SEQUENCE_END(SMIMECapabilities_unwrapped)

IMPLEMENT_ASN1_FUNCTIONS(SMIMECapabilities_unwrapped)

int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms)
{
    /* Write out the ContentInfo */
    if (!i2d_CMS_ContentInfo_bio(bio, cms))
        return 0;

    /* Write out any detached content */
    if (cms->d.enveloped->enc_data->enc_data)
        return 1;
    return BIO_write(bio, cms->d.enveloped->enc_data->enc_data->data,
                     cms->d.enveloped->enc_data->enc_data->length);
}

注意：以上代码仅供参考，实际使用时可能需要进行适当修改。