upd: openssl to 1.1.0

[cassiopeia.git] / lib / openssl / crypto / async / async_wait.c

diff --git a/lib/openssl/crypto/async/async_wait.c b/lib/openssl/crypto/async/async_wait.c
new file mode 100644 (file)
index 0000000..e5ecaeb
--- /dev/null
+++ b/lib/openssl/crypto/async/async_wait.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright 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
+ */
+
+/* This must be the first #include file */
+#include "async_locl.h"
+
+#include <openssl/err.h>
+
+ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void)
+{
+    return OPENSSL_zalloc(sizeof(ASYNC_WAIT_CTX));
+}
+
+void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx)
+{
+    struct fd_lookup_st *curr;
+    struct fd_lookup_st *next;
+
+    if (ctx == NULL)
+        return;
+
+    curr = ctx->fds;
+    while (curr != NULL) {
+        if (!curr->del) {
+            /* Only try and cleanup if it hasn't been marked deleted */
+            if (curr->cleanup != NULL)
+                curr->cleanup(ctx, curr->key, curr->fd, curr->custom_data);
+        }
+        /* Always free the fd_lookup_st */
+        next = curr->next;
+        OPENSSL_free(curr);
+        curr = next;
+    }
+
+    OPENSSL_free(ctx);
+}
+int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,
+                               OSSL_ASYNC_FD fd, void *custom_data,
+                               void (*cleanup)(ASYNC_WAIT_CTX *, const void *,
+                                               OSSL_ASYNC_FD, void *))
+{
+    struct fd_lookup_st *fdlookup;
+
+    fdlookup = OPENSSL_zalloc(sizeof *fdlookup);
+    if (fdlookup == NULL)
+        return 0;
+
+    fdlookup->key = key;
+    fdlookup->fd = fd;
+    fdlookup->custom_data = custom_data;
+    fdlookup->cleanup = cleanup;
+    fdlookup->add = 1;
+    fdlookup->next = ctx->fds;
+    ctx->fds = fdlookup;
+    ctx->numadd++;
+    return 1;
+}
+
+int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,
+                          OSSL_ASYNC_FD *fd, void **custom_data)
+{
+    struct fd_lookup_st *curr;
+
+    curr = ctx->fds;
+    while (curr != NULL) {
+        if (curr->del) {
+            /* This one has been marked deleted so do nothing */
+            curr = curr->next;
+            continue;
+        }
+        if (curr->key == key) {
+            *fd = curr->fd;
+            *custom_data = curr->custom_data;
+            return 1;
+        }
+        curr = curr->next;
+    }
+    return 0;
+}
+
+int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,
+                               size_t *numfds)
+{
+    struct fd_lookup_st *curr;
+
+    curr = ctx->fds;
+    *numfds = 0;
+    while (curr != NULL) {
+        if (curr->del) {
+            /* This one has been marked deleted so do nothing */
+            curr = curr->next;
+            continue;
+        }
+        if (fd != NULL) {
+            *fd = curr->fd;
+            fd++;
+        }
+        (*numfds)++;
+        curr = curr->next;
+    }
+    return 1;
+}
+
+int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,
+                                   size_t *numaddfds, OSSL_ASYNC_FD *delfd,
+                                   size_t *numdelfds)
+{
+    struct fd_lookup_st *curr;
+
+    *numaddfds = ctx->numadd;
+    *numdelfds = ctx->numdel;
+    if (addfd == NULL && delfd == NULL)
+        return 1;
+
+    curr = ctx->fds;
+
+    while (curr != NULL) {
+        /* We ignore fds that have been marked as both added and deleted */
+        if (curr->del && !curr->add && (delfd != NULL)) {
+            *delfd = curr->fd;
+            delfd++;
+        }
+        if (curr->add && !curr->del && (addfd != NULL)) {
+            *addfd = curr->fd;
+            addfd++;
+        }
+        curr = curr->next;
+    }
+
+    return 1;
+}
+
+int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key)
+{
+    struct fd_lookup_st *curr;
+
+    curr = ctx->fds;
+    while (curr != NULL) {
+        if (curr->del) {
+            /* This one has been marked deleted already so do nothing */
+            curr = curr->next;
+            continue;
+        }
+        if (curr->key == key) {
+            /*
+             * Mark it as deleted. We don't call cleanup if explicitly asked
+             * to clear an fd. We assume the caller is going to do that (if
+             * appropriate).
+             */
+            curr->del = 1;
+            ctx->numdel++;
+            return 1;
+        }
+        curr = curr->next;
+    }
+    return 0;
+}
+
+void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx)
+{
+    struct fd_lookup_st *curr, *prev = NULL;
+
+    ctx->numadd = 0;
+    ctx->numdel = 0;
+
+    curr = ctx->fds;
+
+    while (curr != NULL) {
+        if (curr->del) {
+            if (prev == NULL)
+                ctx->fds = curr->next;
+            else
+                prev->next = curr->next;
+            OPENSSL_free(curr);
+            if (prev == NULL)
+                curr = ctx->fds;
+            else
+                curr = prev->next;
+            continue;
+        }
+        if (curr->add) {
+            curr->add = 0;
+        }
+        prev = curr;
+        curr = curr->next;
+    }
+}