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Diffstat (limited to 'Cryptlib/OpenSSL/crypto/async/async.c')
-rw-r--r--Cryptlib/OpenSSL/crypto/async/async.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/Cryptlib/OpenSSL/crypto/async/async.c b/Cryptlib/OpenSSL/crypto/async/async.c
deleted file mode 100644
index 8c699af7..00000000
--- a/Cryptlib/OpenSSL/crypto/async/async.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-/*
- * Without this we start getting longjmp crashes because it thinks we're jumping
- * up the stack when in fact we are jumping to an entirely different stack. The
- * cost of this is not having certain buffer overrun/underrun checks etc for
- * this source file :-(
- */
-#undef _FORTIFY_SOURCE
-
-/* This must be the first #include file */
-#include "async_locl.h"
-
-#include <openssl/err.h>
-#include <internal/cryptlib_int.h>
-#include <string.h>
-
-#define ASYNC_JOB_RUNNING 0
-#define ASYNC_JOB_PAUSING 1
-#define ASYNC_JOB_PAUSED 2
-#define ASYNC_JOB_STOPPING 3
-
-static CRYPTO_THREAD_LOCAL ctxkey;
-static CRYPTO_THREAD_LOCAL poolkey;
-
-static void async_free_pool_internal(async_pool *pool);
-
-static async_ctx *async_ctx_new(void)
-{
- async_ctx *nctx = NULL;
-
- nctx = OPENSSL_malloc(sizeof (async_ctx));
- if (nctx == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_CTX_NEW, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- async_fibre_init_dispatcher(&nctx->dispatcher);
- nctx->currjob = NULL;
- nctx->blocked = 0;
- if (!CRYPTO_THREAD_set_local(&ctxkey, nctx))
- goto err;
-
- return nctx;
-err:
- OPENSSL_free(nctx);
-
- return NULL;
-}
-
-async_ctx *async_get_ctx(void)
-{
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return NULL;
-
- return (async_ctx *)CRYPTO_THREAD_get_local(&ctxkey);
-}
-
-static int async_ctx_free(void)
-{
- async_ctx *ctx;
-
- ctx = async_get_ctx();
-
- if (!CRYPTO_THREAD_set_local(&ctxkey, NULL))
- return 0;
-
- OPENSSL_free(ctx);
-
- return 1;
-}
-
-static ASYNC_JOB *async_job_new(void)
-{
- ASYNC_JOB *job = NULL;
-
- job = OPENSSL_zalloc(sizeof (ASYNC_JOB));
- if (job == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_JOB_NEW, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- job->status = ASYNC_JOB_RUNNING;
-
- return job;
-}
-
-static void async_job_free(ASYNC_JOB *job)
-{
- if (job != NULL) {
- OPENSSL_free(job->funcargs);
- async_fibre_free(&job->fibrectx);
- OPENSSL_free(job);
- }
-}
-
-static ASYNC_JOB *async_get_pool_job(void) {
- ASYNC_JOB *job;
- async_pool *pool;
-
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- if (pool == NULL) {
- /*
- * Pool has not been initialised, so init with the defaults, i.e.
- * no max size and no pre-created jobs
- */
- if (ASYNC_init_thread(0, 0) == 0)
- return NULL;
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- }
-
- job = sk_ASYNC_JOB_pop(pool->jobs);
- if (job == NULL) {
- /* Pool is empty */
- if ((pool->max_size != 0) && (pool->curr_size >= pool->max_size))
- return NULL;
-
- job = async_job_new();
- if (job != NULL) {
- if (! async_fibre_makecontext(&job->fibrectx)) {
- async_job_free(job);
- return NULL;
- }
- pool->curr_size++;
- }
- }
- return job;
-}
-
-static void async_release_job(ASYNC_JOB *job) {
- async_pool *pool;
-
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- OPENSSL_free(job->funcargs);
- job->funcargs = NULL;
- sk_ASYNC_JOB_push(pool->jobs, job);
-}
-
-void async_start_func(void)
-{
- ASYNC_JOB *job;
- async_ctx *ctx = async_get_ctx();
-
- while (1) {
- /* Run the job */
- job = ctx->currjob;
- job->ret = job->func(job->funcargs);
-
- /* Stop the job */
- job->status = ASYNC_JOB_STOPPING;
- if (!async_fibre_swapcontext(&job->fibrectx,
- &ctx->dispatcher, 1)) {
- /*
- * Should not happen. Getting here will close the thread...can't do
- * much about it
- */
- ASYNCerr(ASYNC_F_ASYNC_START_FUNC, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- }
- }
-}
-
-int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *wctx, int *ret,
- int (*func)(void *), void *args, size_t size)
-{
- async_ctx *ctx = async_get_ctx();
- if (ctx == NULL)
- ctx = async_ctx_new();
- if (ctx == NULL) {
- return ASYNC_ERR;
- }
-
- if (*job) {
- ctx->currjob = *job;
- }
-
- for (;;) {
- if (ctx->currjob != NULL) {
- if (ctx->currjob->status == ASYNC_JOB_STOPPING) {
- *ret = ctx->currjob->ret;
- ctx->currjob->waitctx = NULL;
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_FINISH;
- }
-
- if (ctx->currjob->status == ASYNC_JOB_PAUSING) {
- *job = ctx->currjob;
- ctx->currjob->status = ASYNC_JOB_PAUSED;
- ctx->currjob = NULL;
- return ASYNC_PAUSE;
- }
-
- if (ctx->currjob->status == ASYNC_JOB_PAUSED) {
- ctx->currjob = *job;
- /* Resume previous job */
- if (!async_fibre_swapcontext(&ctx->dispatcher,
- &ctx->currjob->fibrectx, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB,
- ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- goto err;
- }
- continue;
- }
-
- /* Should not happen */
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_INTERNAL_ERROR);
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_ERR;
- }
-
- /* Start a new job */
- if ((ctx->currjob = async_get_pool_job()) == NULL) {
- return ASYNC_NO_JOBS;
- }
-
- if (args != NULL) {
- ctx->currjob->funcargs = OPENSSL_malloc(size);
- if (ctx->currjob->funcargs == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_MALLOC_FAILURE);
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- return ASYNC_ERR;
- }
- memcpy(ctx->currjob->funcargs, args, size);
- } else {
- ctx->currjob->funcargs = NULL;
- }
-
- ctx->currjob->func = func;
- ctx->currjob->waitctx = wctx;
- if (!async_fibre_swapcontext(&ctx->dispatcher,
- &ctx->currjob->fibrectx, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- goto err;
- }
- }
-
-err:
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_ERR;
-}
-
-int ASYNC_pause_job(void)
-{
- ASYNC_JOB *job;
- async_ctx *ctx = async_get_ctx();
-
- if (ctx == NULL
- || ctx->currjob == NULL
- || ctx->blocked) {
- /*
- * Could be we've deliberately not been started within a job so this is
- * counted as success.
- */
- return 1;
- }
-
- job = ctx->currjob;
- job->status = ASYNC_JOB_PAUSING;
-
- if (!async_fibre_swapcontext(&job->fibrectx,
- &ctx->dispatcher, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_PAUSE_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- return 0;
- }
- /* Reset counts of added and deleted fds */
- async_wait_ctx_reset_counts(job->waitctx);
-
- return 1;
-}
-
-static void async_empty_pool(async_pool *pool)
-{
- ASYNC_JOB *job;
-
- if (!pool || !pool->jobs)
- return;
-
- do {
- job = sk_ASYNC_JOB_pop(pool->jobs);
- async_job_free(job);
- } while (job);
-}
-
-int async_init(void)
-{
- if (!CRYPTO_THREAD_init_local(&ctxkey, NULL))
- return 0;
-
- if (!CRYPTO_THREAD_init_local(&poolkey, NULL)) {
- CRYPTO_THREAD_cleanup_local(&ctxkey);
- return 0;
- }
-
- return 1;
-}
-
-void async_deinit(void)
-{
- CRYPTO_THREAD_cleanup_local(&ctxkey);
- CRYPTO_THREAD_cleanup_local(&poolkey);
-}
-
-int ASYNC_init_thread(size_t max_size, size_t init_size)
-{
- async_pool *pool;
- size_t curr_size = 0;
-
- if (init_size > max_size) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_INVALID_POOL_SIZE);
- return 0;
- }
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL)) {
- return 0;
- }
- if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ASYNC)) {
- return 0;
- }
-
- pool = OPENSSL_zalloc(sizeof *pool);
- if (pool == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- pool->jobs = sk_ASYNC_JOB_new_null();
- if (pool->jobs == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
- OPENSSL_free(pool);
- return 0;
- }
-
- pool->max_size = max_size;
-
- /* Pre-create jobs as required */
- while (init_size--) {
- ASYNC_JOB *job;
- job = async_job_new();
- if (job == NULL || !async_fibre_makecontext(&job->fibrectx)) {
- /*
- * Not actually fatal because we already created the pool, just
- * skip creation of any more jobs
- */
- async_job_free(job);
- break;
- }
- job->funcargs = NULL;
- sk_ASYNC_JOB_push(pool->jobs, job);
- curr_size++;
- }
- pool->curr_size = curr_size;
- if (!CRYPTO_THREAD_set_local(&poolkey, pool)) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_FAILED_TO_SET_POOL);
- goto err;
- }
-
- return 1;
-err:
- async_free_pool_internal(pool);
- return 0;
-}
-
-static void async_free_pool_internal(async_pool *pool)
-{
- if (pool == NULL)
- return;
-
- async_empty_pool(pool);
- sk_ASYNC_JOB_free(pool->jobs);
- OPENSSL_free(pool);
- CRYPTO_THREAD_set_local(&poolkey, NULL);
- async_local_cleanup();
- async_ctx_free();
-}
-
-void ASYNC_cleanup_thread(void)
-{
- async_free_pool_internal((async_pool *)CRYPTO_THREAD_get_local(&poolkey));
-}
-
-ASYNC_JOB *ASYNC_get_current_job(void)
-{
- async_ctx *ctx;
-
- ctx = async_get_ctx();
- if (ctx == NULL)
- return NULL;
-
- return ctx->currjob;
-}
-
-ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job)
-{
- return job->waitctx;
-}
-
-void ASYNC_block_pause(void)
-{
- async_ctx *ctx = async_get_ctx();
- if (ctx == NULL || ctx->currjob == NULL) {
- /*
- * We're not in a job anyway so ignore this
- */
- return;
- }
- ctx->blocked++;
-}
-
-void ASYNC_unblock_pause(void)
-{
- async_ctx *ctx = async_get_ctx();
- if (ctx == NULL || ctx->currjob == NULL) {
- /*
- * We're not in a job anyway so ignore this
- */
- return;
- }
- if (ctx->blocked > 0)
- ctx->blocked--;
-}
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