Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* eng_cnf.c */ |
| 2 | /* Written by Stephen Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 2001. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 2001 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * 3. All advertising materials mentioning features or use of this |
| 21 | * software must display the following acknowledgment: |
| 22 | * "This product includes software developed by the OpenSSL Project |
| 23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 24 | * |
| 25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 | * endorse or promote products derived from this software without |
| 27 | * prior written permission. For written permission, please contact |
| 28 | * licensing@OpenSSL.org. |
| 29 | * |
| 30 | * 5. Products derived from this software may not be called "OpenSSL" |
| 31 | * nor may "OpenSSL" appear in their names without prior written |
| 32 | * permission of the OpenSSL Project. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 | * |
| 39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 | * ==================================================================== |
| 52 | * |
| 53 | * This product includes cryptographic software written by Eric Young |
| 54 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 | * Hudson (tjh@cryptsoft.com). |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | #include "eng_int.h" |
| 60 | #include <openssl/conf.h> |
| 61 | |
| 62 | /* #define ENGINE_CONF_DEBUG */ |
| 63 | |
| 64 | /* ENGINE config module */ |
| 65 | |
| 66 | static char *skip_dot(char *name) |
| 67 | { |
| 68 | char *p; |
| 69 | p = strchr(name, '.'); |
| 70 | if (p) |
| 71 | return p + 1; |
| 72 | return name; |
| 73 | } |
| 74 | |
| 75 | static STACK_OF(ENGINE) *initialized_engines = NULL; |
| 76 | |
| 77 | static int int_engine_init(ENGINE *e) |
| 78 | { |
| 79 | if (!ENGINE_init(e)) |
| 80 | return 0; |
| 81 | if (!initialized_engines) |
| 82 | initialized_engines = sk_ENGINE_new_null(); |
| 83 | if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e)) |
| 84 | { |
| 85 | ENGINE_finish(e); |
| 86 | return 0; |
| 87 | } |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | static int int_engine_configure(char *name, char *value, const CONF *cnf) |
| 93 | { |
| 94 | int i; |
| 95 | int ret = 0; |
| 96 | long do_init = -1; |
| 97 | STACK_OF(CONF_VALUE) *ecmds; |
| 98 | CONF_VALUE *ecmd = NULL; |
| 99 | char *ctrlname, *ctrlvalue; |
| 100 | ENGINE *e = NULL; |
| 101 | int soft = 0; |
| 102 | |
| 103 | name = skip_dot(name); |
| 104 | #ifdef ENGINE_CONF_DEBUG |
| 105 | fprintf(stderr, "Configuring engine %s\n", name); |
| 106 | #endif |
| 107 | /* Value is a section containing ENGINE commands */ |
| 108 | ecmds = NCONF_get_section(cnf, value); |
| 109 | |
| 110 | if (!ecmds) |
| 111 | { |
| 112 | ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_ENGINE_SECTION_ERROR); |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) |
| 117 | { |
| 118 | ecmd = sk_CONF_VALUE_value(ecmds, i); |
| 119 | ctrlname = skip_dot(ecmd->name); |
| 120 | ctrlvalue = ecmd->value; |
| 121 | #ifdef ENGINE_CONF_DEBUG |
| 122 | fprintf(stderr, "ENGINE conf: doing ctrl(%s,%s)\n", ctrlname, ctrlvalue); |
| 123 | #endif |
| 124 | |
| 125 | /* First handle some special pseudo ctrls */ |
| 126 | |
| 127 | /* Override engine name to use */ |
| 128 | if (!strcmp(ctrlname, "engine_id")) |
| 129 | name = ctrlvalue; |
| 130 | else if (!strcmp(ctrlname, "soft_load")) |
| 131 | soft = 1; |
| 132 | /* Load a dynamic ENGINE */ |
| 133 | else if (!strcmp(ctrlname, "dynamic_path")) |
| 134 | { |
| 135 | e = ENGINE_by_id("dynamic"); |
| 136 | if (!e) |
| 137 | goto err; |
| 138 | if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0)) |
| 139 | goto err; |
| 140 | if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0)) |
| 141 | goto err; |
| 142 | if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) |
| 143 | goto err; |
| 144 | } |
| 145 | /* ... add other pseudos here ... */ |
| 146 | else |
| 147 | { |
| 148 | /* At this point we need an ENGINE structural reference |
| 149 | * if we don't already have one. |
| 150 | */ |
| 151 | if (!e) |
| 152 | { |
| 153 | e = ENGINE_by_id(name); |
| 154 | if (!e && soft) |
| 155 | { |
| 156 | ERR_clear_error(); |
| 157 | return 1; |
| 158 | } |
| 159 | if (!e) |
| 160 | goto err; |
| 161 | } |
| 162 | /* Allow "EMPTY" to mean no value: this allows a valid |
| 163 | * "value" to be passed to ctrls of type NO_INPUT |
| 164 | */ |
| 165 | if (!strcmp(ctrlvalue, "EMPTY")) |
| 166 | ctrlvalue = NULL; |
| 167 | if (!strcmp(ctrlname, "init")) |
| 168 | { |
| 169 | if (!NCONF_get_number_e(cnf, value, "init", &do_init)) |
| 170 | goto err; |
| 171 | if (do_init == 1) |
| 172 | { |
| 173 | if (!int_engine_init(e)) |
| 174 | goto err; |
| 175 | } |
| 176 | else if (do_init != 0) |
| 177 | { |
| 178 | ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_INVALID_INIT_VALUE); |
| 179 | goto err; |
| 180 | } |
| 181 | } |
| 182 | else if (!strcmp(ctrlname, "default_algorithms")) |
| 183 | { |
| 184 | if (!ENGINE_set_default_string(e, ctrlvalue)) |
| 185 | goto err; |
| 186 | } |
| 187 | else if (!ENGINE_ctrl_cmd_string(e, |
| 188 | ctrlname, ctrlvalue, 0)) |
| 189 | goto err; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | |
| 194 | } |
| 195 | if (e && (do_init == -1) && !int_engine_init(e)) |
| 196 | { |
| 197 | ecmd = NULL; |
| 198 | goto err; |
| 199 | } |
| 200 | ret = 1; |
| 201 | err: |
| 202 | if (ret != 1) |
| 203 | { |
| 204 | ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_ENGINE_CONFIGURATION_ERROR); |
| 205 | if (ecmd) |
| 206 | ERR_add_error_data(6, "section=", ecmd->section, |
| 207 | ", name=", ecmd->name, |
| 208 | ", value=", ecmd->value); |
| 209 | } |
| 210 | if (e) |
| 211 | ENGINE_free(e); |
| 212 | return ret; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | static int int_engine_module_init(CONF_IMODULE *md, const CONF *cnf) |
| 217 | { |
| 218 | STACK_OF(CONF_VALUE) *elist; |
| 219 | CONF_VALUE *cval; |
| 220 | int i; |
| 221 | #ifdef ENGINE_CONF_DEBUG |
| 222 | fprintf(stderr, "Called engine module: name %s, value %s\n", |
| 223 | CONF_imodule_get_name(md), CONF_imodule_get_value(md)); |
| 224 | #endif |
| 225 | /* Value is a section containing ENGINEs to configure */ |
| 226 | elist = NCONF_get_section(cnf, CONF_imodule_get_value(md)); |
| 227 | |
| 228 | if (!elist) |
| 229 | { |
| 230 | ENGINEerr(ENGINE_F_INT_ENGINE_MODULE_INIT, ENGINE_R_ENGINES_SECTION_ERROR); |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | for (i = 0; i < sk_CONF_VALUE_num(elist); i++) |
| 235 | { |
| 236 | cval = sk_CONF_VALUE_value(elist, i); |
| 237 | if (!int_engine_configure(cval->name, cval->value, cnf)) |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | return 1; |
| 242 | } |
| 243 | |
| 244 | static void int_engine_module_finish(CONF_IMODULE *md) |
| 245 | { |
| 246 | ENGINE *e; |
| 247 | while ((e = sk_ENGINE_pop(initialized_engines))) |
| 248 | ENGINE_finish(e); |
| 249 | sk_ENGINE_free(initialized_engines); |
| 250 | initialized_engines = NULL; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | void ENGINE_add_conf_module(void) |
| 255 | { |
| 256 | CONF_module_add("engines", |
| 257 | int_engine_module_init, |
| 258 | int_engine_module_finish); |
| 259 | } |