+++ /dev/null
-/* Demo of how to construct your own engine and using it. The basis of this
- engine is RSAref, an old reference of the RSA algorithm which can still
- be found a little here and there. */
-
-#include <stdio.h>
-#include <string.h>
-#include "./source/global.h"
-#include "./source/rsaref.h"
-#include "./source/rsa.h"
-#include "./source/des.h"
-#include <openssl/err.h>
-#define OPENSSL_NO_MD2
-#define OPENSSL_NO_MD5
-#include <openssl/evp.h>
-#include <openssl/bn.h>
-#include <openssl/engine.h>
-
-#define RSAREF_LIB_NAME "rsaref engine"
-#include "rsaref_err.c"
-
-/*****************************************************************************
- *** Function declarations and global variable definitions ***
- *****************************************************************************/
-
-/*****************************************************************************
- * Constants used when creating the ENGINE
- **/
-static const char *engine_rsaref_id = "rsaref";
-static const char *engine_rsaref_name = "RSAref engine support";
-
-/*****************************************************************************
- * Functions to handle the engine
- **/
-static int rsaref_destroy(ENGINE *e);
-static int rsaref_init(ENGINE *e);
-static int rsaref_finish(ENGINE *e);
-#if 0
-static int rsaref_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
-#endif
-
-/*****************************************************************************
- * Engine commands
- **/
-static const ENGINE_CMD_DEFN rsaref_cmd_defns[] = {
- {0, NULL, NULL, 0}
- };
-
-/*****************************************************************************
- * RSA functions
- **/
-static int rsaref_private_decrypt(int len, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding);
-static int rsaref_private_encrypt(int len, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding);
-static int rsaref_public_encrypt(int len, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding);
-static int rsaref_public_decrypt(int len, const unsigned char *from,
- unsigned char *to, RSA *rsa, int padding);
-static int bnref_mod_exp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p,const BIGNUM *m,
- BN_CTX *ctx, BN_MONT_CTX *m_ctx);
-static int rsaref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
-
-/*****************************************************************************
- * Our RSA method
- **/
-static RSA_METHOD rsaref_rsa =
-{
- "RSAref PKCS#1 RSA",
- rsaref_public_encrypt,
- rsaref_public_decrypt,
- rsaref_private_encrypt,
- rsaref_private_decrypt,
- rsaref_mod_exp,
- bnref_mod_exp,
- NULL,
- NULL,
- 0,
- NULL,
- NULL,
- NULL
-};
-
-/*****************************************************************************
- * Symetric cipher and digest function registrars
- **/
-static int rsaref_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid);
-static int rsaref_digests(ENGINE *e, const EVP_MD **digest,
- const int **nids, int nid);
-
-static int rsaref_cipher_nids[] =
- { NID_des_cbc, NID_des_ede3_cbc, NID_desx_cbc, 0 };
-static int rsaref_digest_nids[] =
- { NID_md2, NID_md5, 0 };
-
-/*****************************************************************************
- * DES functions
- **/
-static int cipher_des_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int cipher_des_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl);
-static int cipher_des_cbc_clean(EVP_CIPHER_CTX *);
-static int cipher_des_ede3_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int cipher_des_ede3_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl);
-static int cipher_des_ede3_cbc_clean(EVP_CIPHER_CTX *);
-static int cipher_desx_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int cipher_desx_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl);
-static int cipher_desx_cbc_clean(EVP_CIPHER_CTX *);
-
-/*****************************************************************************
- * Our DES ciphers
- **/
-static const EVP_CIPHER cipher_des_cbc =
- {
- NID_des_cbc,
- 8, 8, 8,
- 0 | EVP_CIPH_CBC_MODE,
- cipher_des_cbc_init,
- cipher_des_cbc_code,
- cipher_des_cbc_clean,
- sizeof(DES_CBC_CTX),
- NULL,
- NULL,
- NULL,
- NULL
- };
-
-static const EVP_CIPHER cipher_des_ede3_cbc =
- {
- NID_des_ede3_cbc,
- 8, 24, 8,
- 0 | EVP_CIPH_CBC_MODE,
- cipher_des_ede3_cbc_init,
- cipher_des_ede3_cbc_code,
- cipher_des_ede3_cbc_clean,
- sizeof(DES3_CBC_CTX),
- NULL,
- NULL,
- NULL,
- NULL
- };
-
-static const EVP_CIPHER cipher_desx_cbc =
- {
- NID_desx_cbc,
- 8, 24, 8,
- 0 | EVP_CIPH_CBC_MODE,
- cipher_desx_cbc_init,
- cipher_desx_cbc_code,
- cipher_desx_cbc_clean,
- sizeof(DESX_CBC_CTX),
- NULL,
- NULL,
- NULL,
- NULL
- };
-
-/*****************************************************************************
- * MD functions
- **/
-static int digest_md2_init(EVP_MD_CTX *ctx);
-static int digest_md2_update(EVP_MD_CTX *ctx,const void *data,
- unsigned long count);
-static int digest_md2_final(EVP_MD_CTX *ctx,unsigned char *md);
-static int digest_md5_init(EVP_MD_CTX *ctx);
-static int digest_md5_update(EVP_MD_CTX *ctx,const void *data,
- unsigned long count);
-static int digest_md5_final(EVP_MD_CTX *ctx,unsigned char *md);
-
-/*****************************************************************************
- * Our MD digests
- **/
-static const EVP_MD digest_md2 =
- {
- NID_md2,
- NID_md2WithRSAEncryption,
- 16,
- 0,
- digest_md2_init,
- digest_md2_update,
- digest_md2_final,
- NULL,
- NULL,
- EVP_PKEY_RSA_method,
- 16,
- sizeof(MD2_CTX)
- };
-
-static const EVP_MD digest_md5 =
- {
- NID_md5,
- NID_md5WithRSAEncryption,
- 16,
- 0,
- digest_md5_init,
- digest_md5_update,
- digest_md5_final,
- NULL,
- NULL,
- EVP_PKEY_RSA_method,
- 64,
- sizeof(MD5_CTX)
- };
-
-/*****************************************************************************
- *** Function definitions ***
- *****************************************************************************/
-
-/*****************************************************************************
- * Functions to handle the engine
- **/
-
-static int bind_rsaref(ENGINE *e)
- {
- const RSA_METHOD *meth1;
- if(!ENGINE_set_id(e, engine_rsaref_id)
- || !ENGINE_set_name(e, engine_rsaref_name)
- || !ENGINE_set_RSA(e, &rsaref_rsa)
- || !ENGINE_set_ciphers(e, rsaref_ciphers)
- || !ENGINE_set_digests(e, rsaref_digests)
- || !ENGINE_set_destroy_function(e, rsaref_destroy)
- || !ENGINE_set_init_function(e, rsaref_init)
- || !ENGINE_set_finish_function(e, rsaref_finish)
- /* || !ENGINE_set_ctrl_function(e, rsaref_ctrl) */
- /* || !ENGINE_set_cmd_defns(e, rsaref_cmd_defns) */)
- return 0;
-
- /* Ensure the rsaref error handling is set up */
- ERR_load_RSAREF_strings();
- return 1;
- }
-
-#ifdef ENGINE_DYNAMIC_SUPPORT
-static int bind_helper(ENGINE *e, const char *id)
- {
- if(id && (strcmp(id, engine_rsaref_id) != 0))
- return 0;
- if(!bind_rsaref(e))
- return 0;
- return 1;
- }
-IMPLEMENT_DYNAMIC_CHECK_FN()
-IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
-#else
-static ENGINE *engine_rsaref(void)
- {
- ENGINE *ret = ENGINE_new();
- if(!ret)
- return NULL;
- if(!bind_rsaref(ret))
- {
- ENGINE_free(ret);
- return NULL;
- }
- return ret;
- }
-
-void ENGINE_load_rsaref(void)
- {
- /* Copied from eng_[openssl|dyn].c */
- ENGINE *toadd = engine_rsaref();
- if(!toadd) return;
- ENGINE_add(toadd);
- ENGINE_free(toadd);
- ERR_clear_error();
- }
-#endif
-
-/* Initiator which is only present to make sure this engine looks available */
-static int rsaref_init(ENGINE *e)
- {
- return 1;
- }
-
-/* Finisher which is only present to make sure this engine looks available */
-static int rsaref_finish(ENGINE *e)
- {
- return 1;
- }
-
-/* Destructor (complements the "ENGINE_ncipher()" constructor) */
-static int rsaref_destroy(ENGINE *e)
- {
- ERR_unload_RSAREF_strings();
- return 1;
- }
-
-/*****************************************************************************
- * RSA functions
- **/
-
-static int rsaref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
- {
- RSAREFerr(RSAREF_F_RSAREF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return(0);
- }
-
-static int bnref_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
- {
- RSAREFerr(RSAREF_F_BNREF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return(0);
- }
-
-/* unsigned char *to: [max] */
-static int RSAref_bn2bin(BIGNUM *from, unsigned char *to, int max)
- {
- int i;
-
- i=BN_num_bytes(from);
- if (i > max)
- {
- RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
- return(0);
- }
-
- memset(to,0,(unsigned int)max);
- if (!BN_bn2bin(from,&(to[max-i])))
- return(0);
- return(1);
- }
-
-#ifdef undef
-/* unsigned char *from: [max] */
-static BIGNUM *RSAref_bin2bn(unsigned char *from, BIGNUM *to, int max)
- {
- int i;
- BIGNUM *ret;
-
- for (i=0; i<max; i++)
- if (from[i]) break;
-
- ret=BN_bin2bn(&(from[i]),max-i,to);
- return(ret);
- }
-
-static int RSAref_Public_ref2eay(RSArefPublicKey *from, RSA *to)
- {
- to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
- to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
- if ((to->n == NULL) || (to->e == NULL)) return(0);
- return(1);
- }
-#endif
-
-static int RSAref_Public_eay2ref(RSA *from, R_RSA_PUBLIC_KEY *to)
- {
- to->bits=BN_num_bits(from->n);
- if (!RSAref_bn2bin(from->n,to->modulus,MAX_RSA_MODULUS_LEN)) return(0);
- if (!RSAref_bn2bin(from->e,to->exponent,MAX_RSA_MODULUS_LEN)) return(0);
- return(1);
- }
-
-#ifdef undef
-static int RSAref_Private_ref2eay(RSArefPrivateKey *from, RSA *to)
- {
- if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
- return(0);
- if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
- return(0);
- if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
- return(0);
- if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
- return(0);
- if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
- return(0);
- if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
- == NULL)
- return(0);
- if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
- == NULL)
- return(0);
- if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
- return(0);
- return(1);
- }
-#endif
-
-static int RSAref_Private_eay2ref(RSA *from, R_RSA_PRIVATE_KEY *to)
- {
- to->bits=BN_num_bits(from->n);
- if (!RSAref_bn2bin(from->n,to->modulus,MAX_RSA_MODULUS_LEN)) return(0);
- if (!RSAref_bn2bin(from->e,to->publicExponent,MAX_RSA_MODULUS_LEN)) return(0);
- if (!RSAref_bn2bin(from->d,to->exponent,MAX_RSA_MODULUS_LEN)) return(0);
- if (!RSAref_bn2bin(from->p,to->prime[0],MAX_RSA_PRIME_LEN)) return(0);
- if (!RSAref_bn2bin(from->q,to->prime[1],MAX_RSA_PRIME_LEN)) return(0);
- if (!RSAref_bn2bin(from->dmp1,to->primeExponent[0],MAX_RSA_PRIME_LEN)) return(0);
- if (!RSAref_bn2bin(from->dmq1,to->primeExponent[1],MAX_RSA_PRIME_LEN)) return(0);
- if (!RSAref_bn2bin(from->iqmp,to->coefficient,MAX_RSA_PRIME_LEN)) return(0);
- return(1);
- }
-
-static int rsaref_private_decrypt(int len, const unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- int i,outlen= -1;
- R_RSA_PRIVATE_KEY RSAkey;
-
- if (!RSAref_Private_eay2ref(rsa,&RSAkey))
- goto err;
- if ((i=RSAPrivateDecrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0)
- {
- RSAREFerr(RSAREF_F_RSAREF_PRIVATE_DECRYPT,i);
- outlen= -1;
- }
-err:
- memset(&RSAkey,0,sizeof(RSAkey));
- return(outlen);
- }
-
-static int rsaref_private_encrypt(int len, const unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- int i,outlen= -1;
- R_RSA_PRIVATE_KEY RSAkey;
-
- if (padding != RSA_PKCS1_PADDING)
- {
- RSAREFerr(RSAREF_F_RSAREF_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
- goto err;
- }
- if (!RSAref_Private_eay2ref(rsa,&RSAkey))
- goto err;
- if ((i=RSAPrivateEncrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0)
- {
- RSAREFerr(RSAREF_F_RSAREF_PRIVATE_ENCRYPT,i);
- outlen= -1;
- }
-err:
- memset(&RSAkey,0,sizeof(RSAkey));
- return(outlen);
- }
-
-static int rsaref_public_decrypt(int len, const unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- int i,outlen= -1;
- R_RSA_PUBLIC_KEY RSAkey;
-
- if (!RSAref_Public_eay2ref(rsa,&RSAkey))
- goto err;
- if ((i=RSAPublicDecrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0)
- {
- RSAREFerr(RSAREF_F_RSAREF_PUBLIC_DECRYPT,i);
- outlen= -1;
- }
-err:
- memset(&RSAkey,0,sizeof(RSAkey));
- return(outlen);
- }
-
-static int rsaref_public_encrypt(int len, const unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- int outlen= -1;
- int i;
- R_RSA_PUBLIC_KEY RSAkey;
- R_RANDOM_STRUCT rnd;
- unsigned char buf[16];
-
- if (padding != RSA_PKCS1_PADDING && padding != RSA_SSLV23_PADDING)
- {
- RSAREFerr(RSAREF_F_RSAREF_PUBLIC_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
- goto err;
- }
-
- R_RandomInit(&rnd);
- R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
- while (i > 0)
- {
- if (RAND_bytes(buf,16) <= 0)
- goto err;
- R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
- i-=16;
- }
-
- if (!RSAref_Public_eay2ref(rsa,&RSAkey))
- goto err;
- if ((i=RSAPublicEncrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey,&rnd)) != 0)
- {
- RSAREFerr(RSAREF_F_RSAREF_PUBLIC_ENCRYPT,i);
- outlen= -1;
- goto err;
- }
-err:
- memset(&RSAkey,0,sizeof(RSAkey));
- R_RandomFinal(&rnd);
- memset(&rnd,0,sizeof(rnd));
- return(outlen);
- }
-
-/*****************************************************************************
- * Symetric cipher and digest function registrars
- **/
-static int rsaref_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid)
- {
- int ok = 1;
- if(!cipher)
- {
- /* We are returning a list of supported nids */
- *nids = rsaref_cipher_nids;
- return (sizeof(rsaref_cipher_nids)-1)/sizeof(rsaref_cipher_nids[0]);
- }
- /* We are being asked for a specific cipher */
- switch (nid)
- {
- case NID_des_cbc:
- *cipher = &cipher_des_cbc; break;
- case NID_des_ede3_cbc:
- *cipher = &cipher_des_ede3_cbc; break;
- case NID_desx_cbc:
- *cipher = &cipher_desx_cbc; break;
- default:
- ok = 0;
- *cipher = NULL;
- break;
- }
- return ok;
- }
-static int rsaref_digests(ENGINE *e, const EVP_MD **digest,
- const int **nids, int nid)
- {
- int ok = 1;
- if(!digest)
- {
- /* We are returning a list of supported nids */
- *nids = rsaref_digest_nids;
- return (sizeof(rsaref_digest_nids)-1)/sizeof(rsaref_digest_nids[0]);
- }
- /* We are being asked for a specific digest */
- switch (nid)
- {
- case NID_md2:
- *digest = &digest_md2; break;
- case NID_md5:
- *digest = &digest_md5; break;
- default:
- ok = 0;
- *digest = NULL;
- break;
- }
- return ok;
- }
-
-/*****************************************************************************
- * DES functions
- **/
-#undef data
-#define data(ctx) ((DES_CBC_CTX *)(ctx)->cipher_data)
-static int cipher_des_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- DES_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv, enc);
- return 1;
- }
-static int cipher_des_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
- {
- int ret = DES_CBCUpdate(data(ctx), out, (unsigned char *)in, inl);
- switch (ret)
- {
- case RE_LEN:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED);
- break;
- case 0:
- break;
- default:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT);
- }
- return !ret;
- }
-static int cipher_des_cbc_clean(EVP_CIPHER_CTX *ctx)
- {
- memset(data(ctx), 0, ctx->cipher->ctx_size);
- return 1;
- }
-
-#undef data
-#define data(ctx) ((DES3_CBC_CTX *)(ctx)->cipher_data)
-static int cipher_des_ede3_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- DES3_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv,
- enc);
- return 1;
- }
-static int cipher_des_ede3_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
- {
- int ret = DES3_CBCUpdate(data(ctx), out, (unsigned char *)in, inl);
- switch (ret)
- {
- case RE_LEN:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED);
- break;
- case 0:
- break;
- default:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT);
- }
- return !ret;
- }
-static int cipher_des_ede3_cbc_clean(EVP_CIPHER_CTX *ctx)
- {
- memset(data(ctx), 0, ctx->cipher->ctx_size);
- return 1;
- }
-
-#undef data
-#define data(ctx) ((DESX_CBC_CTX *)(ctx)->cipher_data)
-static int cipher_desx_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- DESX_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv,
- enc);
- return 1;
- }
-static int cipher_desx_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
- {
- int ret = DESX_CBCUpdate(data(ctx), out, (unsigned char *)in, inl);
- switch (ret)
- {
- case RE_LEN:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED);
- break;
- case 0:
- break;
- default:
- RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT);
- }
- return !ret;
- }
-static int cipher_desx_cbc_clean(EVP_CIPHER_CTX *ctx)
- {
- memset(data(ctx), 0, ctx->cipher->ctx_size);
- return 1;
- }
-
-/*****************************************************************************
- * MD functions
- **/
-#undef data
-#define data(ctx) ((MD2_CTX *)(ctx)->md_data)
-static int digest_md2_init(EVP_MD_CTX *ctx)
- {
- MD2Init(data(ctx));
- return 1;
- }
-static int digest_md2_update(EVP_MD_CTX *ctx,const void *data,
- unsigned long count)
- {
- MD2Update(data(ctx), (unsigned char *)data, (unsigned int)count);
- return 1;
- }
-static int digest_md2_final(EVP_MD_CTX *ctx,unsigned char *md)
- {
- MD2Final(md, data(ctx));
- return 1;
- }
-
-#undef data
-#define data(ctx) ((MD5_CTX *)(ctx)->md_data)
-static int digest_md5_init(EVP_MD_CTX *ctx)
- {
- MD5Init(data(ctx));
- return 1;
- }
-static int digest_md5_update(EVP_MD_CTX *ctx,const void *data,
- unsigned long count)
- {
- MD5Update(data(ctx), (unsigned char *)data, (unsigned int)count);
- return 1;
- }
-static int digest_md5_final(EVP_MD_CTX *ctx,unsigned char *md)
- {
- MD5Final(md, data(ctx));
- return 1;
- }
projects / cassiopeia.git / blobdiff