Upgrade openssl from 1.1.0e to 1.1.1b, with source code. 4.0.78

trunk/3rdparty/openssl-1.1-fit/crypto/dso/dso_lib.c

@@ -0,0 +1,350 @@
+/*
+ * Copyright 2000-2017 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
+ */
+
+#include "dso_locl.h"
+#include "internal/refcount.h"
+
+static DSO_METHOD *default_DSO_meth = NULL;
+
+static DSO *DSO_new_method(DSO_METHOD *meth)
+{
+    DSO *ret;
+
+    if (default_DSO_meth == NULL) {
+        /*
+         * We default to DSO_METH_openssl() which in turn defaults to
+         * stealing the "best available" method. Will fallback to
+         * DSO_METH_null() in the worst case.
+         */
+        default_DSO_meth = DSO_METHOD_openssl();
+    }
+    ret = OPENSSL_zalloc(sizeof(*ret));
+    if (ret == NULL) {
+        DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    ret->meth_data = sk_void_new_null();
+    if (ret->meth_data == NULL) {
+        /* sk_new doesn't generate any errors so we do */
+        DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(ret);
+        return NULL;
+    }
+    ret->meth = default_DSO_meth;
+    ret->references = 1;
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
+        DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        sk_void_free(ret->meth_data);
+        OPENSSL_free(ret);
+        return NULL;
+    }
+
+    if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+        DSO_free(ret);
+        ret = NULL;
+    }
+
+    return ret;
+}
+
+DSO *DSO_new(void)
+{
+    return DSO_new_method(NULL);
+}
+
+int DSO_free(DSO *dso)
+{
+    int i;
+
+    if (dso == NULL)
+        return 1;
+
+    if (CRYPTO_DOWN_REF(&dso->references, &i, dso->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("DSO", dso);
+    if (i > 0)
+        return 1;
+    REF_ASSERT_ISNT(i < 0);
+
+    if ((dso->flags & DSO_FLAG_NO_UNLOAD_ON_FREE) == 0) {
+        if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
+            DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
+            return 0;
+        }
+    }
+
+    if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
+        DSOerr(DSO_F_DSO_FREE, DSO_R_FINISH_FAILED);
+        return 0;
+    }
+
+    sk_void_free(dso->meth_data);
+    OPENSSL_free(dso->filename);
+    OPENSSL_free(dso->loaded_filename);
+    CRYPTO_THREAD_lock_free(dso->lock);
+    OPENSSL_free(dso);
+    return 1;
+}
+
+int DSO_flags(DSO *dso)
+{
+    return ((dso == NULL) ? 0 : dso->flags);
+}
+
+int DSO_up_ref(DSO *dso)
+{
+    int i;
+
+    if (dso == NULL) {
+        DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+
+    if (CRYPTO_UP_REF(&dso->references, &i, dso->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("DSO", r);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
+}
+
+DSO *DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags)
+{
+    DSO *ret;
+    int allocated = 0;
+
+    if (dso == NULL) {
+        ret = DSO_new_method(meth);
+        if (ret == NULL) {
+            DSOerr(DSO_F_DSO_LOAD, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        allocated = 1;
+        /* Pass the provided flags to the new DSO object */
+        if (DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0) {
+            DSOerr(DSO_F_DSO_LOAD, DSO_R_CTRL_FAILED);
+            goto err;
+        }
+    } else
+        ret = dso;
+    /* Don't load if we're currently already loaded */
+    if (ret->filename != NULL) {
+        DSOerr(DSO_F_DSO_LOAD, DSO_R_DSO_ALREADY_LOADED);
+        goto err;
+    }
+    /*
+     * filename can only be NULL if we were passed a dso that already has one
+     * set.
+     */
+    if (filename != NULL)
+        if (!DSO_set_filename(ret, filename)) {
+            DSOerr(DSO_F_DSO_LOAD, DSO_R_SET_FILENAME_FAILED);
+            goto err;
+        }
+    filename = ret->filename;
+    if (filename == NULL) {
+        DSOerr(DSO_F_DSO_LOAD, DSO_R_NO_FILENAME);
+        goto err;
+    }
+    if (ret->meth->dso_load == NULL) {
+        DSOerr(DSO_F_DSO_LOAD, DSO_R_UNSUPPORTED);
+        goto err;
+    }
+    if (!ret->meth->dso_load(ret)) {
+        DSOerr(DSO_F_DSO_LOAD, DSO_R_LOAD_FAILED);
+        goto err;
+    }
+    /* Load succeeded */
+    return ret;
+ err:
+    if (allocated)
+        DSO_free(ret);
+    return NULL;
+}
+
+DSO_FUNC_TYPE DSO_bind_func(DSO *dso, const char *symname)
+{
+    DSO_FUNC_TYPE ret = NULL;
+
+    if ((dso == NULL) || (symname == NULL)) {
+        DSOerr(DSO_F_DSO_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
+        return NULL;
+    }
+    if (dso->meth->dso_bind_func == NULL) {
+        DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_UNSUPPORTED);
+        return NULL;
+    }
+    if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
+        DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_SYM_FAILURE);
+        return NULL;
+    }
+    /* Success */
+    return ret;
+}
+
+/*
+ * I don't really like these *_ctrl functions very much to be perfectly
+ * honest. For one thing, I think I have to return a negative value for any
+ * error because possible DSO_ctrl() commands may return values such as
+ * "size"s that can legitimately be zero (making the standard
+ * "if (DSO_cmd(...))" form that works almost everywhere else fail at odd
+ * times. I'd prefer "output" values to be passed by reference and the return
+ * value as success/failure like usual ... but we conform when we must... :-)
+ */
+long DSO_ctrl(DSO *dso, int cmd, long larg, void *parg)
+{
+    if (dso == NULL) {
+        DSOerr(DSO_F_DSO_CTRL, ERR_R_PASSED_NULL_PARAMETER);
+        return -1;
+    }
+    /*
+     * We should intercept certain generic commands and only pass control to
+     * the method-specific ctrl() function if it's something we don't handle.
+     */
+    switch (cmd) {
+    case DSO_CTRL_GET_FLAGS:
+        return dso->flags;
+    case DSO_CTRL_SET_FLAGS:
+        dso->flags = (int)larg;
+        return 0;
+    case DSO_CTRL_OR_FLAGS:
+        dso->flags |= (int)larg;
+        return 0;
+    default:
+        break;
+    }
+    if ((dso->meth == NULL) || (dso->meth->dso_ctrl == NULL)) {
+        DSOerr(DSO_F_DSO_CTRL, DSO_R_UNSUPPORTED);
+        return -1;
+    }
+    return dso->meth->dso_ctrl(dso, cmd, larg, parg);
+}
+
+const char *DSO_get_filename(DSO *dso)
+{
+    if (dso == NULL) {
+        DSOerr(DSO_F_DSO_GET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+        return NULL;
+    }
+    return dso->filename;
+}
+
+int DSO_set_filename(DSO *dso, const char *filename)
+{
+    char *copied;
+
+    if ((dso == NULL) || (filename == NULL)) {
+        DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    if (dso->loaded_filename) {
+        DSOerr(DSO_F_DSO_SET_FILENAME, DSO_R_DSO_ALREADY_LOADED);
+        return 0;
+    }
+    /* We'll duplicate filename */
+    copied = OPENSSL_strdup(filename);
+    if (copied == NULL) {
+        DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    OPENSSL_free(dso->filename);
+    dso->filename = copied;
+    return 1;
+}
+
+char *DSO_merge(DSO *dso, const char *filespec1, const char *filespec2)
+{
+    char *result = NULL;
+
+    if (dso == NULL || filespec1 == NULL) {
+        DSOerr(DSO_F_DSO_MERGE, ERR_R_PASSED_NULL_PARAMETER);
+        return NULL;
+    }
+    if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
+        if (dso->merger != NULL)
+            result = dso->merger(dso, filespec1, filespec2);
+        else if (dso->meth->dso_merger != NULL)
+            result = dso->meth->dso_merger(dso, filespec1, filespec2);
+    }
+    return result;
+}
+
+char *DSO_convert_filename(DSO *dso, const char *filename)
+{
+    char *result = NULL;
+
+    if (dso == NULL) {
+        DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+        return NULL;
+    }
+    if (filename == NULL)
+        filename = dso->filename;
+    if (filename == NULL) {
+        DSOerr(DSO_F_DSO_CONVERT_FILENAME, DSO_R_NO_FILENAME);
+        return NULL;
+    }
+    if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
+        if (dso->name_converter != NULL)
+            result = dso->name_converter(dso, filename);
+        else if (dso->meth->dso_name_converter != NULL)
+            result = dso->meth->dso_name_converter(dso, filename);
+    }
+    if (result == NULL) {
+        result = OPENSSL_strdup(filename);
+        if (result == NULL) {
+            DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    }
+    return result;
+}
+
+int DSO_pathbyaddr(void *addr, char *path, int sz)
+{
+    DSO_METHOD *meth = default_DSO_meth;
+    if (meth == NULL)
+        meth = DSO_METHOD_openssl();
+    if (meth->pathbyaddr == NULL) {
+        DSOerr(DSO_F_DSO_PATHBYADDR, DSO_R_UNSUPPORTED);
+        return -1;
+    }
+    return (*meth->pathbyaddr) (addr, path, sz);
+}
+
+DSO *DSO_dsobyaddr(void *addr, int flags)
+{
+    DSO *ret = NULL;
+    char *filename = NULL;
+    int len = DSO_pathbyaddr(addr, NULL, 0);
+
+    if (len < 0)
+        return NULL;
+
+    filename = OPENSSL_malloc(len);
+    if (filename != NULL
+            && DSO_pathbyaddr(addr, filename, len) == len)
+        ret = DSO_load(NULL, filename, NULL, flags);
+
+    OPENSSL_free(filename);
+    return ret;
+}
+
+void *DSO_global_lookup(const char *name)
+{
+    DSO_METHOD *meth = default_DSO_meth;
+    if (meth == NULL)
+        meth = DSO_METHOD_openssl();
+    if (meth->globallookup == NULL) {
+        DSOerr(DSO_F_DSO_GLOBAL_LOOKUP, DSO_R_UNSUPPORTED);
+        return NULL;
+    }
+    return (*meth->globallookup) (name);
+}