-/* engines/e_dasync.c */
/*
* Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
*/
#include <openssl/evp.h>
#include <openssl/async.h>
#include <openssl/bn.h>
+#include <openssl/crypto.h>
+
+#if (defined(OPENSSL_SYS_UNIX) || defined(OPENSSL_SYS_CYGWIN)) && defined(OPENSSL_THREADS)
+# undef ASYNC_POSIX
+# define ASYNC_POSIX
+# include <unistd.h>
+#elif defined(_WIN32)
+# undef ASYNC_WIN
+# define ASYNC_WIN
+# include <windows.h>
+#endif
#define DASYNC_LIB_NAME "DASYNC"
#include "e_dasync_err.c"
static int dasync_destroy(ENGINE *e);
static int dasync_init(ENGINE *e);
static int dasync_finish(ENGINE *e);
-void ENGINE_load_dasync(void);
+void engine_load_dasync_internal(void);
/* Set up digests. Just SHA1 for now */
static int dasync_digests(ENGINE *e, const EVP_MD **digest,
const int **nids, int nid);
-static int dasync_digest_nids[] = { NID_sha1, 0 };
-
static void dummy_pause_job(void);
/* SHA1 */
size_t count);
static int dasync_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
-static const EVP_MD dasync_sha1 = {
- NID_sha1,
- NID_sha1WithRSAEncryption,
- SHA_DIGEST_LENGTH,
- EVP_MD_FLAG_DIGALGID_ABSENT,
- dasync_sha1_init,
- dasync_sha1_update,
- dasync_sha1_final,
- NULL,
- NULL,
- SHA_CBLOCK,
- sizeof(EVP_MD *) + sizeof(SHA_CTX),
-};
+static EVP_MD *_hidden_sha1_md = NULL;
+static const EVP_MD *dasync_sha1(void)
+{
+ if (_hidden_sha1_md == NULL) {
+ EVP_MD *md;
+
+ if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
+ || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
+ || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
+ || !EVP_MD_meth_set_app_datasize(md,
+ sizeof(EVP_MD *) + sizeof(SHA_CTX))
+ || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
+ || !EVP_MD_meth_set_init(md, dasync_sha1_init)
+ || !EVP_MD_meth_set_update(md, dasync_sha1_update)
+ || !EVP_MD_meth_set_final(md, dasync_sha1_final)) {
+ EVP_MD_meth_free(md);
+ md = NULL;
+ }
+ _hidden_sha1_md = md;
+ }
+ return _hidden_sha1_md;
+}
+static void destroy_digests(void)
+{
+ EVP_MD_meth_free(_hidden_sha1_md);
+ _hidden_sha1_md = NULL;
+}
+static int dasync_digest_nids(const int **nids)
+{
+ static int digest_nids[2] = { 0, 0 };
+ static int pos = 0;
+ static int init = 0;
+
+ if (!init) {
+ const EVP_MD *md;
+ if ((md = dasync_sha1()) != NULL)
+ digest_nids[pos++] = EVP_MD_type(md);
+ digest_nids[pos] = 0;
+ init = 1;
+ }
+ *nids = digest_nids;
+ return pos;
+}
/* RSA */
return ret;
}
-void ENGINE_load_dasync(void)
+void engine_load_dasync_internal(void)
{
ENGINE *toadd = engine_dasync();
if (!toadd)
static int dasync_destroy(ENGINE *e)
{
+ destroy_digests();
ERR_unload_DASYNC_strings();
return 1;
}
int ok = 1;
if (!digest) {
/* We are returning a list of supported nids */
- *nids = dasync_digest_nids;
- return (sizeof(dasync_digest_nids) -
- 1) / sizeof(dasync_digest_nids[0]);
+ return dasync_digest_nids(nids);
}
/* We are being asked for a specific digest */
switch (nid) {
case NID_sha1:
- *digest = &dasync_sha1;
+ *digest = dasync_sha1();
break;
default:
ok = 0;
return ok;
}
+static void wait_cleanup(ASYNC_WAIT_CTX *ctx, const void *key,
+ OSSL_ASYNC_FD readfd, void *pvwritefd)
+{
+ OSSL_ASYNC_FD *pwritefd = (OSSL_ASYNC_FD *)pvwritefd;
+#if defined(ASYNC_WIN)
+ CloseHandle(readfd);
+ CloseHandle(*pwritefd);
+#elif defined(ASYNC_POSIX)
+ close(readfd);
+ close(*pwritefd);
+#endif
+ OPENSSL_free(pwritefd);
+}
+
+#define DUMMY_CHAR 'X'
+
static void dummy_pause_job(void) {
ASYNC_JOB *job;
+ ASYNC_WAIT_CTX *waitctx;
+ OSSL_ASYNC_FD pipefds[2] = {0, 0};
+ OSSL_ASYNC_FD *writefd;
+#if defined(ASYNC_WIN)
+ DWORD numwritten, numread;
+ char buf = DUMMY_CHAR;
+#elif defined(ASYNC_POSIX)
+ char buf = DUMMY_CHAR;
+#endif
if ((job = ASYNC_get_current_job()) == NULL)
return;
+ waitctx = ASYNC_get_wait_ctx(job);
+
+ if (ASYNC_WAIT_CTX_get_fd(waitctx, engine_dasync_id, &pipefds[0],
+ (void **)&writefd)) {
+ pipefds[1] = *writefd;
+ } else {
+ writefd = OPENSSL_malloc(sizeof(*writefd));
+ if (writefd == NULL)
+ return;
+#if defined(ASYNC_WIN)
+ if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0) {
+ OPENSSL_free(writefd);
+ return;
+ }
+#elif defined(ASYNC_POSIX)
+ if (pipe(pipefds) != 0) {
+ OPENSSL_free(writefd);
+ return;
+ }
+#endif
+ *writefd = pipefds[1];
+
+ if(!ASYNC_WAIT_CTX_set_wait_fd(waitctx, engine_dasync_id, pipefds[0],
+ writefd, wait_cleanup)) {
+ wait_cleanup(waitctx, engine_dasync_id, pipefds[0], writefd);
+ return;
+ }
+ }
/*
* In the Dummy async engine we are cheating. We signal that the job
* is complete by waking it before the call to ASYNC_pause_job(). A real
* async engine would only wake when the job was actually complete
*/
- ASYNC_wake(job);
+#if defined(ASYNC_WIN)
+ WriteFile(pipefds[1], &buf, 1, &numwritten, NULL);
+#elif defined(ASYNC_POSIX)
+ write(pipefds[1], &buf, 1);
+#endif
/* Ignore errors - we carry on anyway */
ASYNC_pause_job();
- ASYNC_clear_wake(job);
+ /* Clear the wake signal */
+#if defined(ASYNC_WIN)
+ ReadFile(pipefds[0], &buf, 1, &numread, NULL);
+#elif defined(ASYNC_POSIX)
+ read(pipefds[0], &buf, 1);
+#endif
}
-
/*
* SHA1 implementation. At the moment we just defer to the standard
* implementation
*/
#undef data
-#define data(ctx) ((SHA_CTX *)(ctx)->md_data)
+#define data(ctx) ((SHA_CTX *)EVP_MD_CTX_md_data(ctx))
static int dasync_sha1_init(EVP_MD_CTX *ctx)
{
dummy_pause_job();
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