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| author | djm <> | 2008-09-06 12:15:53 +0000 |
|---|---|---|
| committer | djm <> | 2008-09-06 12:15:53 +0000 |
| commit | 89b182c5db7ea802edfc3ee734b4899b43e13e09 (patch) | |
| tree | 88747ac13b4a3c36ffc2fe9901e1e90efc583ced /src/lib/libcrypto/store/str_mem.c | |
| parent | 2264137440a13fb11f05127cb03f7239f024ab28 (diff) | |
| parent | f69b11f62c3e6c9d4db22529933cf93b6301f7b1 (diff) | |
| download | openbsd-89b182c5db7ea802edfc3ee734b4899b43e13e09.tar.gz openbsd-89b182c5db7ea802edfc3ee734b4899b43e13e09.tar.bz2 openbsd-89b182c5db7ea802edfc3ee734b4899b43e13e09.zip | |
This commit was generated by cvs2git to track changes on a CVS vendor
branch.
Diffstat (limited to 'src/lib/libcrypto/store/str_mem.c')
| -rw-r--r-- | src/lib/libcrypto/store/str_mem.c | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/src/lib/libcrypto/store/str_mem.c b/src/lib/libcrypto/store/str_mem.c new file mode 100644 index 0000000000..527757ae09 --- /dev/null +++ b/src/lib/libcrypto/store/str_mem.c | |||
| @@ -0,0 +1,357 @@ | |||
| 1 | /* crypto/store/str_mem.c -*- mode:C; c-file-style: "eay" -*- */ | ||
| 2 | /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL | ||
| 3 | * project 2003. | ||
| 4 | */ | ||
| 5 | /* ==================================================================== | ||
| 6 | * Copyright (c) 2003 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 | * openssl-core@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 <string.h> | ||
| 60 | #include <openssl/err.h> | ||
| 61 | #include "str_locl.h" | ||
| 62 | |||
| 63 | /* The memory store is currently highly experimental. It's meant to become | ||
| 64 | a base store used by other stores for internal caching (for full caching | ||
| 65 | support, aging needs to be added). | ||
| 66 | |||
| 67 | The database use is meant to support as much attribute association as | ||
| 68 | possible, while providing for as small search ranges as possible. | ||
| 69 | This is currently provided for by sorting the entries by numbers that | ||
| 70 | are composed of bits set at the positions indicated by attribute type | ||
| 71 | codes. This provides for ranges determined by the highest attribute | ||
| 72 | type code value. A better idea might be to sort by values computed | ||
| 73 | from the range of attributes associated with the object (basically, | ||
| 74 | the difference between the highest and lowest attribute type code) | ||
| 75 | and it's distance from a base (basically, the lowest associated | ||
| 76 | attribute type code). | ||
| 77 | */ | ||
| 78 | |||
| 79 | struct mem_object_data_st | ||
| 80 | { | ||
| 81 | STORE_OBJECT *object; | ||
| 82 | STORE_ATTR_INFO *attr_info; | ||
| 83 | int references; | ||
| 84 | }; | ||
| 85 | |||
| 86 | struct mem_data_st | ||
| 87 | { | ||
| 88 | STACK *data; /* A stack of mem_object_data_st, | ||
| 89 | sorted with STORE_ATTR_INFO_compare(). */ | ||
| 90 | unsigned int compute_components : 1; /* Currently unused, but can | ||
| 91 | be used to add attributes | ||
| 92 | from parts of the data. */ | ||
| 93 | }; | ||
| 94 | |||
| 95 | struct mem_ctx_st | ||
| 96 | { | ||
| 97 | int type; /* The type we're searching for */ | ||
| 98 | STACK *search_attributes; /* Sets of attributes to search for. | ||
| 99 | Each element is a STORE_ATTR_INFO. */ | ||
| 100 | int search_index; /* which of the search attributes we found a match | ||
| 101 | for, -1 when we still haven't found any */ | ||
| 102 | int index; /* -1 as long as we're searching for the first */ | ||
| 103 | }; | ||
| 104 | |||
| 105 | static int mem_init(STORE *s); | ||
| 106 | static void mem_clean(STORE *s); | ||
| 107 | static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type, | ||
| 108 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]); | ||
| 109 | static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type, | ||
| 110 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]); | ||
| 111 | static int mem_store(STORE *s, STORE_OBJECT_TYPES type, | ||
| 112 | STORE_OBJECT *data, OPENSSL_ITEM attributes[], | ||
| 113 | OPENSSL_ITEM parameters[]); | ||
| 114 | static int mem_modify(STORE *s, STORE_OBJECT_TYPES type, | ||
| 115 | OPENSSL_ITEM search_attributes[], OPENSSL_ITEM add_attributes[], | ||
| 116 | OPENSSL_ITEM modify_attributes[], OPENSSL_ITEM delete_attributes[], | ||
| 117 | OPENSSL_ITEM parameters[]); | ||
| 118 | static int mem_delete(STORE *s, STORE_OBJECT_TYPES type, | ||
| 119 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]); | ||
| 120 | static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type, | ||
| 121 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]); | ||
| 122 | static STORE_OBJECT *mem_list_next(STORE *s, void *handle); | ||
| 123 | static int mem_list_end(STORE *s, void *handle); | ||
| 124 | static int mem_list_endp(STORE *s, void *handle); | ||
| 125 | static int mem_lock(STORE *s, OPENSSL_ITEM attributes[], | ||
| 126 | OPENSSL_ITEM parameters[]); | ||
| 127 | static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[], | ||
| 128 | OPENSSL_ITEM parameters[]); | ||
| 129 | static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f)(void)); | ||
| 130 | |||
| 131 | static STORE_METHOD store_memory = | ||
| 132 | { | ||
| 133 | "OpenSSL memory store interface", | ||
| 134 | mem_init, | ||
| 135 | mem_clean, | ||
| 136 | mem_generate, | ||
| 137 | mem_get, | ||
| 138 | mem_store, | ||
| 139 | mem_modify, | ||
| 140 | NULL, /* revoke */ | ||
| 141 | mem_delete, | ||
| 142 | mem_list_start, | ||
| 143 | mem_list_next, | ||
| 144 | mem_list_end, | ||
| 145 | mem_list_endp, | ||
| 146 | NULL, /* update */ | ||
| 147 | mem_lock, | ||
| 148 | mem_unlock, | ||
| 149 | mem_ctrl | ||
| 150 | }; | ||
| 151 | |||
| 152 | const STORE_METHOD *STORE_Memory(void) | ||
| 153 | { | ||
| 154 | return &store_memory; | ||
| 155 | } | ||
| 156 | |||
| 157 | static int mem_init(STORE *s) | ||
| 158 | { | ||
| 159 | return 1; | ||
| 160 | } | ||
| 161 | |||
| 162 | static void mem_clean(STORE *s) | ||
| 163 | { | ||
| 164 | return; | ||
| 165 | } | ||
| 166 | |||
| 167 | static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type, | ||
| 168 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]) | ||
| 169 | { | ||
| 170 | STOREerr(STORE_F_MEM_GENERATE, STORE_R_NOT_IMPLEMENTED); | ||
| 171 | return 0; | ||
| 172 | } | ||
| 173 | static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type, | ||
| 174 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]) | ||
| 175 | { | ||
| 176 | void *context = mem_list_start(s, type, attributes, parameters); | ||
| 177 | |||
| 178 | if (context) | ||
| 179 | { | ||
| 180 | STORE_OBJECT *object = mem_list_next(s, context); | ||
| 181 | |||
| 182 | if (mem_list_end(s, context)) | ||
| 183 | return object; | ||
| 184 | } | ||
| 185 | return NULL; | ||
| 186 | } | ||
| 187 | static int mem_store(STORE *s, STORE_OBJECT_TYPES type, | ||
| 188 | STORE_OBJECT *data, OPENSSL_ITEM attributes[], | ||
| 189 | OPENSSL_ITEM parameters[]) | ||
| 190 | { | ||
| 191 | STOREerr(STORE_F_MEM_STORE, STORE_R_NOT_IMPLEMENTED); | ||
| 192 | return 0; | ||
| 193 | } | ||
| 194 | static int mem_modify(STORE *s, STORE_OBJECT_TYPES type, | ||
| 195 | OPENSSL_ITEM search_attributes[], OPENSSL_ITEM add_attributes[], | ||
| 196 | OPENSSL_ITEM modify_attributes[], OPENSSL_ITEM delete_attributes[], | ||
| 197 | OPENSSL_ITEM parameters[]) | ||
| 198 | { | ||
| 199 | STOREerr(STORE_F_MEM_MODIFY, STORE_R_NOT_IMPLEMENTED); | ||
| 200 | return 0; | ||
| 201 | } | ||
| 202 | static int mem_delete(STORE *s, STORE_OBJECT_TYPES type, | ||
| 203 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]) | ||
| 204 | { | ||
| 205 | STOREerr(STORE_F_MEM_DELETE, STORE_R_NOT_IMPLEMENTED); | ||
| 206 | return 0; | ||
| 207 | } | ||
| 208 | |||
| 209 | /* The list functions may be the hardest to understand. Basically, | ||
| 210 | mem_list_start compiles a stack of attribute info elements, and | ||
| 211 | puts that stack into the context to be returned. mem_list_next | ||
| 212 | will then find the first matching element in the store, and then | ||
| 213 | walk all the way to the end of the store (since any combination | ||
| 214 | of attribute bits above the starting point may match the searched | ||
| 215 | for bit pattern...). */ | ||
| 216 | static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type, | ||
| 217 | OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]) | ||
| 218 | { | ||
| 219 | struct mem_ctx_st *context = | ||
| 220 | (struct mem_ctx_st *)OPENSSL_malloc(sizeof(struct mem_ctx_st)); | ||
| 221 | void *attribute_context = NULL; | ||
| 222 | STORE_ATTR_INFO *attrs = NULL; | ||
| 223 | |||
| 224 | if (!context) | ||
| 225 | { | ||
| 226 | STOREerr(STORE_F_MEM_LIST_START, ERR_R_MALLOC_FAILURE); | ||
| 227 | return 0; | ||
| 228 | } | ||
| 229 | memset(context, 0, sizeof(struct mem_ctx_st)); | ||
| 230 | |||
| 231 | attribute_context = STORE_parse_attrs_start(attributes); | ||
| 232 | if (!attribute_context) | ||
| 233 | { | ||
| 234 | STOREerr(STORE_F_MEM_LIST_START, ERR_R_STORE_LIB); | ||
| 235 | goto err; | ||
| 236 | } | ||
| 237 | |||
| 238 | while((attrs = STORE_parse_attrs_next(attribute_context))) | ||
| 239 | { | ||
| 240 | if (context->search_attributes == NULL) | ||
| 241 | { | ||
| 242 | context->search_attributes = | ||
| 243 | sk_new((int (*)(const char * const *, const char * const *))STORE_ATTR_INFO_compare); | ||
| 244 | if (!context->search_attributes) | ||
| 245 | { | ||
| 246 | STOREerr(STORE_F_MEM_LIST_START, | ||
| 247 | ERR_R_MALLOC_FAILURE); | ||
| 248 | goto err; | ||
| 249 | } | ||
| 250 | } | ||
| 251 | sk_push(context->search_attributes,(char *)attrs); | ||
| 252 | } | ||
| 253 | if (!STORE_parse_attrs_endp(attribute_context)) | ||
| 254 | goto err; | ||
| 255 | STORE_parse_attrs_end(attribute_context); | ||
| 256 | context->search_index = -1; | ||
| 257 | context->index = -1; | ||
| 258 | return context; | ||
| 259 | err: | ||
| 260 | if (attribute_context) STORE_parse_attrs_end(attribute_context); | ||
| 261 | mem_list_end(s, context); | ||
| 262 | return NULL; | ||
| 263 | } | ||
| 264 | static STORE_OBJECT *mem_list_next(STORE *s, void *handle) | ||
| 265 | { | ||
| 266 | int i; | ||
| 267 | struct mem_ctx_st *context = (struct mem_ctx_st *)handle; | ||
| 268 | struct mem_object_data_st key = { 0, 0, 1 }; | ||
| 269 | struct mem_data_st *store = | ||
| 270 | (struct mem_data_st *)STORE_get_ex_data(s, 1); | ||
| 271 | int srch; | ||
| 272 | int cres = 0; | ||
| 273 | |||
| 274 | if (!context) | ||
| 275 | { | ||
| 276 | STOREerr(STORE_F_MEM_LIST_NEXT, ERR_R_PASSED_NULL_PARAMETER); | ||
| 277 | return NULL; | ||
| 278 | } | ||
| 279 | if (!store) | ||
| 280 | { | ||
| 281 | STOREerr(STORE_F_MEM_LIST_NEXT, STORE_R_NO_STORE); | ||
| 282 | return NULL; | ||
| 283 | } | ||
| 284 | |||
| 285 | if (context->search_index == -1) | ||
| 286 | { | ||
| 287 | for (i = 0; i < sk_num(context->search_attributes); i++) | ||
| 288 | { | ||
| 289 | key.attr_info = | ||
| 290 | (STORE_ATTR_INFO *)sk_value(context->search_attributes, i); | ||
| 291 | srch = sk_find_ex(store->data, (char *)&key); | ||
| 292 | |||
| 293 | if (srch >= 0) | ||
| 294 | { | ||
| 295 | context->search_index = srch; | ||
| 296 | break; | ||
| 297 | } | ||
| 298 | } | ||
| 299 | } | ||
| 300 | if (context->search_index < 0) | ||
| 301 | return NULL; | ||
| 302 | |||
| 303 | key.attr_info = | ||
| 304 | (STORE_ATTR_INFO *)sk_value(context->search_attributes, | ||
| 305 | context->search_index); | ||
| 306 | for(srch = context->search_index; | ||
| 307 | srch < sk_num(store->data) | ||
| 308 | && STORE_ATTR_INFO_in_range(key.attr_info, | ||
| 309 | (STORE_ATTR_INFO *)sk_value(store->data, srch)) | ||
| 310 | && !(cres = STORE_ATTR_INFO_in_ex(key.attr_info, | ||
| 311 | (STORE_ATTR_INFO *)sk_value(store->data, srch))); | ||
| 312 | srch++) | ||
| 313 | ; | ||
| 314 | |||
| 315 | context->search_index = srch; | ||
| 316 | if (cres) | ||
| 317 | return ((struct mem_object_data_st *)sk_value(store->data, | ||
| 318 | srch))->object; | ||
| 319 | return NULL; | ||
| 320 | } | ||
| 321 | static int mem_list_end(STORE *s, void *handle) | ||
| 322 | { | ||
| 323 | struct mem_ctx_st *context = (struct mem_ctx_st *)handle; | ||
| 324 | |||
| 325 | if (!context) | ||
| 326 | { | ||
| 327 | STOREerr(STORE_F_MEM_LIST_END, ERR_R_PASSED_NULL_PARAMETER); | ||
| 328 | return 0; | ||
| 329 | } | ||
| 330 | if (context && context->search_attributes) | ||
| 331 | sk_free(context->search_attributes); | ||
| 332 | if (context) OPENSSL_free(context); | ||
| 333 | return 1; | ||
| 334 | } | ||
| 335 | static int mem_list_endp(STORE *s, void *handle) | ||
| 336 | { | ||
| 337 | struct mem_ctx_st *context = (struct mem_ctx_st *)handle; | ||
| 338 | |||
| 339 | if (!context | ||
| 340 | || context->search_index == sk_num(context->search_attributes)) | ||
| 341 | return 1; | ||
| 342 | return 0; | ||
| 343 | } | ||
| 344 | static int mem_lock(STORE *s, OPENSSL_ITEM attributes[], | ||
| 345 | OPENSSL_ITEM parameters[]) | ||
| 346 | { | ||
| 347 | return 1; | ||
| 348 | } | ||
| 349 | static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[], | ||
| 350 | OPENSSL_ITEM parameters[]) | ||
| 351 | { | ||
| 352 | return 1; | ||
| 353 | } | ||
| 354 | static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f)(void)) | ||
| 355 | { | ||
| 356 | return 1; | ||
| 357 | } | ||
