diff options
Diffstat (limited to '')
-rw-r--r-- | freebsd/crypto/openssl/crypto/engine/eng_devcrypto.c | 137 |
1 files changed, 76 insertions, 61 deletions
diff --git a/freebsd/crypto/openssl/crypto/engine/eng_devcrypto.c b/freebsd/crypto/openssl/crypto/engine/eng_devcrypto.c index 8e643ad3..ed24d478 100644 --- a/freebsd/crypto/openssl/crypto/engine/eng_devcrypto.c +++ b/freebsd/crypto/openssl/crypto/engine/eng_devcrypto.c @@ -26,10 +26,19 @@ #include "internal/engine.h" +/* #define ENGINE_DEVCRYPTO_DEBUG */ + #ifdef CRYPTO_ALGORITHM_MIN # define CHECK_BSD_STYLE_MACROS #endif +/* + * ONE global file descriptor for all sessions. This allows operations + * such as digest session data copying (see digest_copy()), but is also + * saner... why re-open /dev/crypto for every session? + */ +static int cfd; + /****************************************************************************** * * Ciphers @@ -41,7 +50,6 @@ *****/ struct cipher_ctx { - int cfd; struct session_op sess; /* to pass from init to do_cipher */ @@ -71,7 +79,7 @@ static const struct cipher_data_st { { NID_aes_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC }, { NID_aes_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC }, #ifndef OPENSSL_NO_RC4 - { NID_rc4, 1, 16, 0, CRYPTO_ARC4 }, + { NID_rc4, 1, 16, 0, EVP_CIPH_STREAM_CIPHER, CRYPTO_ARC4 }, #endif #if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_CTR) { NID_aes_128_ctr, 16, 128 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR }, @@ -137,19 +145,13 @@ static int cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, const struct cipher_data_st *cipher_d = get_cipher_data(EVP_CIPHER_CTX_nid(ctx)); - if ((cipher_ctx->cfd = open("/dev/crypto", O_RDWR, 0)) < 0) { - SYSerr(SYS_F_OPEN, errno); - return 0; - } - memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess)); cipher_ctx->sess.cipher = cipher_d->devcryptoid; cipher_ctx->sess.keylen = cipher_d->keylen; cipher_ctx->sess.key = (void *)key; cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT; - if (ioctl(cipher_ctx->cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) { + if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) { SYSerr(SYS_F_IOCTL, errno); - close(cipher_ctx->cfd); return 0; } @@ -188,7 +190,7 @@ static int cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, cryp.flags = COP_FLAG_WRITE_IV; #endif - if (ioctl(cipher_ctx->cfd, CIOCCRYPT, &cryp) < 0) { + if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) { SYSerr(SYS_F_IOCTL, errno); return 0; } @@ -214,14 +216,10 @@ static int cipher_cleanup(EVP_CIPHER_CTX *ctx) struct cipher_ctx *cipher_ctx = (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); - if (ioctl(cipher_ctx->cfd, CIOCFSESSION, &cipher_ctx->sess) < 0) { + if (ioctl(cfd, CIOCFSESSION, &cipher_ctx->sess.ses) < 0) { SYSerr(SYS_F_IOCTL, errno); return 0; } - if (close(cipher_ctx->cfd) < 0) { - SYSerr(SYS_F_CLOSE, errno); - return 0; - } return 1; } @@ -235,14 +233,10 @@ static int known_cipher_nids[OSSL_NELEM(cipher_data)]; static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */ static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, }; -static void prepare_cipher_methods() +static void prepare_cipher_methods(void) { size_t i; struct session_op sess; - int cfd; - - if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) - return; memset(&sess, 0, sizeof(sess)); sess.key = (void *)"01234567890123456789012345678901234567890123456789"; @@ -257,7 +251,7 @@ static void prepare_cipher_methods() sess.cipher = cipher_data[i].devcryptoid; sess.keylen = cipher_data[i].keylen; if (ioctl(cfd, CIOCGSESSION, &sess) < 0 - || ioctl(cfd, CIOCFSESSION, &sess) < 0) + || ioctl(cfd, CIOCFSESSION, &sess.ses) < 0) continue; if ((known_cipher_methods[i] = @@ -283,8 +277,6 @@ static void prepare_cipher_methods() cipher_data[i].nid; } } - - close(cfd); } static const EVP_CIPHER *get_cipher_method(int nid) @@ -310,7 +302,7 @@ static void destroy_cipher_method(int nid) known_cipher_methods[i] = NULL; } -static void destroy_all_cipher_methods() +static void destroy_all_cipher_methods(void) { size_t i; @@ -331,11 +323,12 @@ static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher, /* * We only support digests if the cryptodev implementation supports multiple - * data updates. Otherwise, we would be forced to maintain a cache, which is - * perilous if there's a lot of data coming in (if someone wants to checksum - * an OpenSSL tarball, for example). + * data updates and session copying. Otherwise, we would be forced to maintain + * a cache, which is perilous if there's a lot of data coming in (if someone + * wants to checksum an OpenSSL tarball, for example). */ -#if defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL) +#if defined(CIOCCPHASH) && defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL) +#define IMPLEMENT_DIGEST /****************************************************************************** * @@ -348,7 +341,6 @@ static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher, *****/ struct digest_ctx { - int cfd; struct session_op sess; int init; }; @@ -415,19 +407,12 @@ static int digest_init(EVP_MD_CTX *ctx) const struct digest_data_st *digest_d = get_digest_data(EVP_MD_CTX_type(ctx)); - if (digest_ctx->init == 0 - && (digest_ctx->cfd = open("/dev/crypto", O_RDWR, 0)) < 0) { - SYSerr(SYS_F_OPEN, errno); - return 0; - } - digest_ctx->init = 1; memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess)); digest_ctx->sess.mac = digest_d->devcryptoid; - if (ioctl(digest_ctx->cfd, CIOCGSESSION, &digest_ctx->sess) < 0) { + if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) { SYSerr(SYS_F_IOCTL, errno); - close(digest_ctx->cfd); return 0; } @@ -446,7 +431,7 @@ static int digest_op(struct digest_ctx *ctx, const void *src, size_t srclen, cryp.dst = NULL; cryp.mac = res; cryp.flags = flags; - return ioctl(ctx->cfd, CIOCCRYPT, &cryp); + return ioctl(cfd, CIOCCRYPT, &cryp); } static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count) @@ -474,7 +459,7 @@ static int digest_final(EVP_MD_CTX *ctx, unsigned char *md) SYSerr(SYS_F_IOCTL, errno); return 0; } - if (ioctl(digest_ctx->cfd, CIOCFSESSION, &digest_ctx->sess) < 0) { + if (ioctl(cfd, CIOCFSESSION, &digest_ctx->sess.ses) < 0) { SYSerr(SYS_F_IOCTL, errno); return 0; } @@ -482,16 +467,38 @@ static int digest_final(EVP_MD_CTX *ctx, unsigned char *md) return 1; } -static int digest_cleanup(EVP_MD_CTX *ctx) +static int digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from) { - struct digest_ctx *digest_ctx = - (struct digest_ctx *)EVP_MD_CTX_md_data(ctx); + struct digest_ctx *digest_from = + (struct digest_ctx *)EVP_MD_CTX_md_data(from); + struct digest_ctx *digest_to = + (struct digest_ctx *)EVP_MD_CTX_md_data(to); + struct cphash_op cphash; + + if (digest_from == NULL) + return 1; - if (close(digest_ctx->cfd) < 0) { - SYSerr(SYS_F_CLOSE, errno); + if (digest_from->init != 1) { + SYSerr(SYS_F_IOCTL, EINVAL); return 0; } + if (!digest_init(to)) { + SYSerr(SYS_F_IOCTL, errno); + return 0; + } + + cphash.src_ses = digest_from->sess.ses; + cphash.dst_ses = digest_to->sess.ses; + if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) { + SYSerr(SYS_F_IOCTL, errno); + return 0; + } + return 1; +} + +static int digest_cleanup(EVP_MD_CTX *ctx) +{ return 1; } @@ -504,14 +511,10 @@ static int known_digest_nids[OSSL_NELEM(digest_data)]; static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */ static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, }; -static void prepare_digest_methods() +static void prepare_digest_methods(void) { size_t i; struct session_op sess; - int cfd; - - if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) - return; memset(&sess, 0, sizeof(sess)); @@ -524,7 +527,7 @@ static void prepare_digest_methods() */ sess.mac = digest_data[i].devcryptoid; if (ioctl(cfd, CIOCGSESSION, &sess) < 0 - || ioctl(cfd, CIOCFSESSION, &sess) < 0) + || ioctl(cfd, CIOCFSESSION, &sess.ses) < 0) continue; if ((known_digest_methods[i] = EVP_MD_meth_new(digest_data[i].nid, @@ -534,6 +537,7 @@ static void prepare_digest_methods() || !EVP_MD_meth_set_init(known_digest_methods[i], digest_init) || !EVP_MD_meth_set_update(known_digest_methods[i], digest_update) || !EVP_MD_meth_set_final(known_digest_methods[i], digest_final) + || !EVP_MD_meth_set_copy(known_digest_methods[i], digest_copy) || !EVP_MD_meth_set_cleanup(known_digest_methods[i], digest_cleanup) || !EVP_MD_meth_set_app_datasize(known_digest_methods[i], sizeof(struct digest_ctx))) { @@ -543,8 +547,6 @@ static void prepare_digest_methods() known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid; } } - - close(cfd); } static const EVP_MD *get_digest_method(int nid) @@ -570,7 +572,7 @@ static void destroy_digest_method(int nid) known_digest_methods[i] = NULL; } -static void destroy_all_digest_methods() +static void destroy_all_digest_methods(void) { size_t i; @@ -600,9 +602,12 @@ static int devcrypto_digests(ENGINE *e, const EVP_MD **digest, static int devcrypto_unload(ENGINE *e) { destroy_all_cipher_methods(); -#if defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL) +#ifdef IMPLEMENT_DIGEST destroy_all_digest_methods(); #endif + + close(cfd); + return 1; } /* @@ -613,23 +618,33 @@ void engine_load_devcrypto_int() { ENGINE *e = NULL; - if (access("/dev/crypto", R_OK | W_OK) < 0) { - fprintf(stderr, - "/dev/crypto not present, not enabling devcrypto engine\n"); + if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) { +#ifndef ENGINE_DEVCRYPTO_DEBUG + if (errno != ENOENT) +#endif + fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno)); return; } prepare_cipher_methods(); -#if defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL) +#ifdef IMPLEMENT_DIGEST prepare_digest_methods(); #endif - if ((e = ENGINE_new()) == NULL) + if ((e = ENGINE_new()) == NULL + || !ENGINE_set_destroy_function(e, devcrypto_unload)) { + ENGINE_free(e); + /* + * We know that devcrypto_unload() won't be called when one of the + * above two calls have failed, so we close cfd explicitly here to + * avoid leaking resources. + */ + close(cfd); return; + } if (!ENGINE_set_id(e, "devcrypto") || !ENGINE_set_name(e, "/dev/crypto engine") - || !ENGINE_set_destroy_function(e, devcrypto_unload) /* * Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD @@ -666,7 +681,7 @@ void engine_load_devcrypto_int() # endif #endif || !ENGINE_set_ciphers(e, devcrypto_ciphers) -#if defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL) +#ifdef IMPLEMENT_DIGEST || !ENGINE_set_digests(e, devcrypto_digests) #endif ) { |