2 * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
13 #include "eng_local.h"
14 #include <openssl/conf.h>
15 #include <openssl/trace.h>
17 /* ENGINE config module */
19 static const char *skip_dot(const char *name)
21 const char *p = strchr(name, '.');
28 static STACK_OF(ENGINE) *initialized_engines = NULL;
30 static int int_engine_init(ENGINE *e)
34 if (!initialized_engines)
35 initialized_engines = sk_ENGINE_new_null();
36 if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e)) {
43 static int int_engine_configure(const char *name, const char *value, const CONF *cnf)
48 STACK_OF(CONF_VALUE) *ecmds;
49 CONF_VALUE *ecmd = NULL;
50 const char *ctrlname, *ctrlvalue;
54 name = skip_dot(name);
55 OSSL_TRACE1(CONF, "Configuring engine %s\n", name);
56 /* Value is a section containing ENGINE commands */
57 ecmds = NCONF_get_section(cnf, value);
60 ERR_raise(ERR_LIB_ENGINE, ENGINE_R_ENGINE_SECTION_ERROR);
64 for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
65 ecmd = sk_CONF_VALUE_value(ecmds, i);
66 ctrlname = skip_dot(ecmd->name);
67 ctrlvalue = ecmd->value;
68 OSSL_TRACE2(CONF, "ENGINE: doing ctrl(%s,%s)\n",
71 /* First handle some special pseudo ctrls */
73 /* Override engine name to use */
74 if (strcmp(ctrlname, "engine_id") == 0)
76 else if (strcmp(ctrlname, "soft_load") == 0)
78 /* Load a dynamic ENGINE */
79 else if (strcmp(ctrlname, "dynamic_path") == 0) {
80 e = ENGINE_by_id("dynamic");
83 if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))
85 if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))
87 if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
90 /* ... add other pseudos here ... */
93 * At this point we need an ENGINE structural reference if we
94 * don't already have one.
97 e = ENGINE_by_id(name);
106 * Allow "EMPTY" to mean no value: this allows a valid "value" to
107 * be passed to ctrls of type NO_INPUT
109 if (strcmp(ctrlvalue, "EMPTY") == 0)
111 if (strcmp(ctrlname, "init") == 0) {
112 if (!NCONF_get_number_e(cnf, value, "init", &do_init))
115 if (!int_engine_init(e))
117 } else if (do_init != 0) {
118 ERR_raise(ERR_LIB_ENGINE, ENGINE_R_INVALID_INIT_VALUE);
121 } else if (strcmp(ctrlname, "default_algorithms") == 0) {
122 if (!ENGINE_set_default_string(e, ctrlvalue))
124 } else if (!ENGINE_ctrl_cmd_string(e, ctrlname, ctrlvalue, 0))
129 if (e && (do_init == -1) && !int_engine_init(e)) {
137 ERR_raise(ERR_LIB_ENGINE, ENGINE_R_ENGINE_CONFIGURATION_ERROR);
139 ERR_raise_data(ERR_LIB_ENGINE, ENGINE_R_ENGINE_CONFIGURATION_ERROR,
140 "section=%s, name=%s, value=%s",
141 ecmd->section, ecmd->name, ecmd->value);
147 static int int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)
149 STACK_OF(CONF_VALUE) *elist;
152 OSSL_TRACE2(CONF, "Called engine module: name %s, value %s\n",
153 CONF_imodule_get_name(md), CONF_imodule_get_value(md));
154 /* Value is a section containing ENGINEs to configure */
155 elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
158 ERR_raise(ERR_LIB_ENGINE, ENGINE_R_ENGINES_SECTION_ERROR);
162 for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
163 cval = sk_CONF_VALUE_value(elist, i);
164 if (!int_engine_configure(cval->name, cval->value, cnf))
171 static void int_engine_module_finish(CONF_IMODULE *md)
175 while ((e = sk_ENGINE_pop(initialized_engines)))
177 sk_ENGINE_free(initialized_engines);
178 initialized_engines = NULL;
181 void ENGINE_add_conf_module(void)
183 CONF_module_add("engines",
184 int_engine_module_init, int_engine_module_finish);