xref: /freebsd/crypto/openssl/crypto/evp/evp_fetch.c (revision e7be843b4a162e68651d3911f0357ed464915629)
1 /*
2  * Copyright 2019-2025 The OpenSSL Project Authors. All Rights Reserved.
3  *
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
8  */
9 
10 #include <stddef.h>
11 #include <openssl/types.h>
12 #include <openssl/evp.h>
13 #include <openssl/core.h>
14 #include "internal/cryptlib.h"
15 #include "internal/thread_once.h"
16 #include "internal/property.h"
17 #include "internal/core.h"
18 #include "internal/provider.h"
19 #include "internal/namemap.h"
20 #include "crypto/decoder.h"
21 #include "crypto/evp.h"    /* evp_local.h needs it */
22 #include "evp_local.h"
23 
24 #define NAME_SEPARATOR ':'
25 
26 /* Data to be passed through ossl_method_construct() */
27 struct evp_method_data_st {
28     OSSL_LIB_CTX *libctx;
29     int operation_id;            /* For get_evp_method_from_store() */
30     int name_id;                 /* For get_evp_method_from_store() */
31     const char *names;           /* For get_evp_method_from_store() */
32     const char *propquery;       /* For get_evp_method_from_store() */
33 
34     OSSL_METHOD_STORE *tmp_store; /* For get_tmp_evp_method_store() */
35 
36     unsigned int flag_construct_error_occurred : 1;
37 
38     void *(*method_from_algorithm)(int name_id, const OSSL_ALGORITHM *,
39                                    OSSL_PROVIDER *);
40     int (*refcnt_up_method)(void *method);
41     void (*destruct_method)(void *method);
42 };
43 
44 /*
45  * Generic routines to fetch / create EVP methods with ossl_method_construct()
46  */
get_tmp_evp_method_store(void * data)47 static void *get_tmp_evp_method_store(void *data)
48 {
49     struct evp_method_data_st *methdata = data;
50 
51     if (methdata->tmp_store == NULL) {
52         methdata->tmp_store = ossl_method_store_new(methdata->libctx);
53         OSSL_TRACE1(QUERY, "Allocating a new tmp_store %p\n", (void *)methdata->tmp_store);
54     } else {
55         OSSL_TRACE1(QUERY, "Using the existing tmp_store %p\n", (void *)methdata->tmp_store);
56     }
57     return methdata->tmp_store;
58 }
59 
dealloc_tmp_evp_method_store(void * store)60  static void dealloc_tmp_evp_method_store(void *store)
61 {
62     OSSL_TRACE1(QUERY, "Deallocating the tmp_store %p\n", store);
63     if (store != NULL)
64         ossl_method_store_free(store);
65 }
66 
get_evp_method_store(OSSL_LIB_CTX * libctx)67 static OSSL_METHOD_STORE *get_evp_method_store(OSSL_LIB_CTX *libctx)
68 {
69     return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_EVP_METHOD_STORE_INDEX);
70 }
71 
reserve_evp_method_store(void * store,void * data)72 static int reserve_evp_method_store(void *store, void *data)
73 {
74     struct evp_method_data_st *methdata = data;
75 
76     if (store == NULL
77         && (store = get_evp_method_store(methdata->libctx)) == NULL)
78         return 0;
79 
80     return ossl_method_lock_store(store);
81 }
82 
unreserve_evp_method_store(void * store,void * data)83 static int unreserve_evp_method_store(void *store, void *data)
84 {
85     struct evp_method_data_st *methdata = data;
86 
87     if (store == NULL
88         && (store = get_evp_method_store(methdata->libctx)) == NULL)
89         return 0;
90 
91     return ossl_method_unlock_store(store);
92 }
93 
94 /*
95  * To identify the method in the EVP method store, we mix the name identity
96  * with the operation identity, under the assumption that we don't have more
97  * than 2^23 names or more than 2^8 operation types.
98  *
99  * The resulting identity is a 31-bit integer, composed like this:
100  *
101  * +---------23 bits--------+-8 bits-+
102  * |      name identity     | op id  |
103  * +------------------------+--------+
104  *
105  * We limit this composite number to 31 bits, thus leaving the top uint32_t
106  * bit always zero, to avoid negative sign extension when downshifting after
107  * this number happens to be passed to an int (which happens as soon as it's
108  * passed to ossl_method_store_cache_set(), and it's in that form that it
109  * gets passed along to filter_on_operation_id(), defined further down.
110  */
111 #define METHOD_ID_OPERATION_MASK        0x000000FF
112 #define METHOD_ID_OPERATION_MAX         ((1 << 8) - 1)
113 #define METHOD_ID_NAME_MASK             0x7FFFFF00
114 #define METHOD_ID_NAME_OFFSET           8
115 #define METHOD_ID_NAME_MAX              ((1 << 23) - 1)
evp_method_id(int name_id,unsigned int operation_id)116 static uint32_t evp_method_id(int name_id, unsigned int operation_id)
117 {
118     if (!ossl_assert(name_id > 0 && name_id <= METHOD_ID_NAME_MAX)
119         || !ossl_assert(operation_id > 0
120                         && operation_id <= METHOD_ID_OPERATION_MAX))
121         return 0;
122     return (((name_id << METHOD_ID_NAME_OFFSET) & METHOD_ID_NAME_MASK)
123             | (operation_id & METHOD_ID_OPERATION_MASK));
124 }
125 
get_evp_method_from_store(void * store,const OSSL_PROVIDER ** prov,void * data)126 static void *get_evp_method_from_store(void *store, const OSSL_PROVIDER **prov,
127                                        void *data)
128 {
129     struct evp_method_data_st *methdata = data;
130     void *method = NULL;
131     int name_id;
132     uint32_t meth_id;
133 
134     /*
135      * get_evp_method_from_store() is only called to try and get the method
136      * that evp_generic_fetch() is asking for, and the operation id as well
137      * as the name or name id are passed via methdata.
138      */
139     if ((name_id = methdata->name_id) == 0 && methdata->names != NULL) {
140         OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
141         const char *names = methdata->names;
142         const char *q = strchr(names, NAME_SEPARATOR);
143         size_t l = (q == NULL ? strlen(names) : (size_t)(q - names));
144 
145         if (namemap == 0)
146             return NULL;
147         name_id = ossl_namemap_name2num_n(namemap, names, l);
148     }
149 
150     if (name_id == 0
151         || (meth_id = evp_method_id(name_id, methdata->operation_id)) == 0)
152         return NULL;
153 
154     if (store == NULL
155         && (store = get_evp_method_store(methdata->libctx)) == NULL)
156         return NULL;
157 
158     if (!ossl_method_store_fetch(store, meth_id, methdata->propquery, prov,
159                                  &method))
160         return NULL;
161     return method;
162 }
163 
put_evp_method_in_store(void * store,void * method,const OSSL_PROVIDER * prov,const char * names,const char * propdef,void * data)164 static int put_evp_method_in_store(void *store, void *method,
165                                    const OSSL_PROVIDER *prov,
166                                    const char *names, const char *propdef,
167                                    void *data)
168 {
169     struct evp_method_data_st *methdata = data;
170     OSSL_NAMEMAP *namemap;
171     int name_id;
172     uint32_t meth_id;
173     size_t l = 0;
174 
175     /*
176      * put_evp_method_in_store() is only called with an EVP method that was
177      * successfully created by construct_method() below, which means that
178      * all the names should already be stored in the namemap with the same
179      * numeric identity, so just use the first to get that identity.
180      */
181     if (names != NULL) {
182         const char *q = strchr(names, NAME_SEPARATOR);
183 
184         l = (q == NULL ? strlen(names) : (size_t)(q - names));
185     }
186 
187     if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
188         || (name_id = ossl_namemap_name2num_n(namemap, names, l)) == 0
189         || (meth_id = evp_method_id(name_id, methdata->operation_id)) == 0)
190         return 0;
191 
192     OSSL_TRACE1(QUERY, "put_evp_method_in_store: original store: %p\n", store);
193     if (store == NULL
194         && (store = get_evp_method_store(methdata->libctx)) == NULL)
195         return 0;
196 
197     OSSL_TRACE5(QUERY,
198                 "put_evp_method_in_store: "
199                 "store: %p, names: %s, operation_id %d, method_id: %d, properties: %s\n",
200                 store, names, methdata->operation_id, meth_id, propdef ? propdef : "<null>");
201     return ossl_method_store_add(store, prov, meth_id, propdef, method,
202                                  methdata->refcnt_up_method,
203                                  methdata->destruct_method);
204 }
205 
206 /*
207  * The core fetching functionality passes the name of the implementation.
208  * This function is responsible to getting an identity number for it.
209  */
construct_evp_method(const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov,void * data)210 static void *construct_evp_method(const OSSL_ALGORITHM *algodef,
211                                   OSSL_PROVIDER *prov, void *data)
212 {
213     /*
214      * This function is only called if get_evp_method_from_store() returned
215      * NULL, so it's safe to say that of all the spots to create a new
216      * namemap entry, this is it.  Should the name already exist there, we
217      * know that ossl_namemap_add_name() will return its corresponding
218      * number.
219      */
220     struct evp_method_data_st *methdata = data;
221     OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
222     OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
223     const char *names = algodef->algorithm_names;
224     int name_id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR);
225     void *method;
226 
227     if (name_id == 0)
228         return NULL;
229 
230     method = methdata->method_from_algorithm(name_id, algodef, prov);
231 
232     /*
233      * Flag to indicate that there was actual construction errors.  This
234      * helps inner_evp_generic_fetch() determine what error it should
235      * record on inaccessible algorithms.
236      */
237     if (method == NULL)
238         methdata->flag_construct_error_occurred = 1;
239 
240     return method;
241 }
242 
destruct_evp_method(void * method,void * data)243 static void destruct_evp_method(void *method, void *data)
244 {
245     struct evp_method_data_st *methdata = data;
246 
247     methdata->destruct_method(method);
248 }
249 
250 static void *
inner_evp_generic_fetch(struct evp_method_data_st * methdata,OSSL_PROVIDER * prov,int operation_id,const char * name,ossl_unused const char * properties,void * (* new_method)(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov),int (* up_ref_method)(void *),void (* free_method)(void *))251 inner_evp_generic_fetch(struct evp_method_data_st *methdata,
252                         OSSL_PROVIDER *prov, int operation_id,
253                         const char *name, ossl_unused const char *properties,
254                         void *(*new_method)(int name_id,
255                                             const OSSL_ALGORITHM *algodef,
256                                             OSSL_PROVIDER *prov),
257                         int (*up_ref_method)(void *),
258                         void (*free_method)(void *))
259 {
260     OSSL_METHOD_STORE *store = get_evp_method_store(methdata->libctx);
261     OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
262 #ifdef FIPS_MODULE
263     /*
264      * The FIPS provider has its own internal library context where only it
265      * is loaded.  Consequently, property queries aren't relevant because
266      * there is only one fetchable algorithm and it is assumed that the
267      * FIPS-ness is handled by the using algorithm.
268      */
269     const char *const propq = "";
270 #else
271     const char *const propq = properties != NULL ? properties : "";
272 #endif  /* FIPS_MODULE */
273     uint32_t meth_id = 0;
274     void *method = NULL;
275     int unsupported, name_id;
276 
277     if (store == NULL || namemap == NULL) {
278         ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT);
279         return NULL;
280     }
281 
282     /*
283      * If there's ever an operation_id == 0 passed, we have an internal
284      * programming error.
285      */
286     if (!ossl_assert(operation_id > 0)) {
287         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
288         return NULL;
289     }
290 
291     /* If we haven't received a name id yet, try to get one for the name */
292     name_id = name != NULL ? ossl_namemap_name2num(namemap, name) : 0;
293 
294     /*
295      * If we have a name id, calculate a method id with evp_method_id().
296      *
297      * evp_method_id returns 0 if we have too many operations (more than
298      * about 2^8) or too many names (more than about 2^24).  In that case,
299      * we can't create any new method.
300      * For all intents and purposes, this is an internal error.
301      */
302     if (name_id != 0 && (meth_id = evp_method_id(name_id, operation_id)) == 0) {
303         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
304         return NULL;
305     }
306 
307     /*
308      * If we haven't found the name yet, chances are that the algorithm to
309      * be fetched is unsupported.
310      */
311     unsupported = name_id == 0;
312 
313     if (meth_id == 0
314         || !ossl_method_store_cache_get(store, prov, meth_id, propq, &method)) {
315         OSSL_METHOD_CONSTRUCT_METHOD mcm = {
316             get_tmp_evp_method_store,
317             reserve_evp_method_store,
318             unreserve_evp_method_store,
319             get_evp_method_from_store,
320             put_evp_method_in_store,
321             construct_evp_method,
322             destruct_evp_method
323         };
324 
325         methdata->operation_id = operation_id;
326         methdata->name_id = name_id;
327         methdata->names = name;
328         methdata->propquery = propq;
329         methdata->method_from_algorithm = new_method;
330         methdata->refcnt_up_method = up_ref_method;
331         methdata->destruct_method = free_method;
332         methdata->flag_construct_error_occurred = 0;
333         if ((method = ossl_method_construct(methdata->libctx, operation_id,
334                                             &prov, 0 /* !force_cache */,
335                                             &mcm, methdata)) != NULL) {
336             /*
337              * If construction did create a method for us, we know that
338              * there is a correct name_id and meth_id, since those have
339              * already been calculated in get_evp_method_from_store() and
340              * put_evp_method_in_store() above.
341              * Note that there is a corner case here, in which, if a user
342              * passes a name of the form name1:name2:..., then the construction
343              * will create a method against all names, but the lookup will fail
344              * as ossl_namemap_name2num treats the name string as a single name
345              * rather than introducing new features where in the EVP_<obj>_fetch
346              * parses the string and queries for each, return an error.
347              */
348             if (name_id == 0)
349                 name_id = ossl_namemap_name2num(namemap, name);
350             if (name_id == 0) {
351                 ERR_raise_data(ERR_LIB_EVP, ERR_R_FETCH_FAILED,
352                                "Algorithm %s cannot be found", name);
353                 free_method(method);
354                 method = NULL;
355             } else {
356                 meth_id = evp_method_id(name_id, operation_id);
357                 if (meth_id != 0)
358                     ossl_method_store_cache_set(store, prov, meth_id, propq,
359                                                 method, up_ref_method, free_method);
360             }
361         }
362 
363         /*
364          * If we never were in the constructor, the algorithm to be fetched
365          * is unsupported.
366          */
367         unsupported = !methdata->flag_construct_error_occurred;
368     }
369 
370     if ((name_id != 0 || name != NULL) && method == NULL) {
371         int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED;
372 
373         if (name == NULL)
374             name = ossl_namemap_num2name(namemap, name_id, 0);
375         ERR_raise_data(ERR_LIB_EVP, code,
376                        "%s, Algorithm (%s : %d), Properties (%s)",
377                        ossl_lib_ctx_get_descriptor(methdata->libctx),
378                        name == NULL ? "<null>" : name, name_id,
379                        properties == NULL ? "<null>" : properties);
380     } else {
381         OSSL_TRACE4(QUERY, "%s, Algorithm (%s : %d), Properties (%s)\n",
382                     ossl_lib_ctx_get_descriptor(methdata->libctx),
383                     name == NULL ? "<null>" : name, name_id,
384                     properties == NULL ? "<null>" : properties);
385     }
386 
387     return method;
388 }
389 
evp_generic_fetch(OSSL_LIB_CTX * libctx,int operation_id,const char * name,const char * properties,void * (* new_method)(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov),int (* up_ref_method)(void *),void (* free_method)(void *))390 void *evp_generic_fetch(OSSL_LIB_CTX *libctx, int operation_id,
391                         const char *name, const char *properties,
392                         void *(*new_method)(int name_id,
393                                             const OSSL_ALGORITHM *algodef,
394                                             OSSL_PROVIDER *prov),
395                         int (*up_ref_method)(void *),
396                         void (*free_method)(void *))
397 {
398     struct evp_method_data_st methdata;
399     void *method;
400 
401     methdata.libctx = libctx;
402     methdata.tmp_store = NULL;
403     method = inner_evp_generic_fetch(&methdata, NULL, operation_id,
404                                      name, properties,
405                                      new_method, up_ref_method, free_method);
406     dealloc_tmp_evp_method_store(methdata.tmp_store);
407     return method;
408 }
409 
410 /*
411  * evp_generic_fetch_from_prov() is special, and only returns methods from
412  * the given provider.
413  * This is meant to be used when one method needs to fetch an associated
414  * method.
415  */
evp_generic_fetch_from_prov(OSSL_PROVIDER * prov,int operation_id,const char * name,const char * properties,void * (* new_method)(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov),int (* up_ref_method)(void *),void (* free_method)(void *))416 void *evp_generic_fetch_from_prov(OSSL_PROVIDER *prov, int operation_id,
417                                   const char *name, const char *properties,
418                                   void *(*new_method)(int name_id,
419                                                       const OSSL_ALGORITHM *algodef,
420                                                       OSSL_PROVIDER *prov),
421                                   int (*up_ref_method)(void *),
422                                   void (*free_method)(void *))
423 {
424     struct evp_method_data_st methdata;
425     void *method;
426 
427     methdata.libctx = ossl_provider_libctx(prov);
428     methdata.tmp_store = NULL;
429     method = inner_evp_generic_fetch(&methdata, prov, operation_id,
430                                      name, properties,
431                                      new_method, up_ref_method, free_method);
432     dealloc_tmp_evp_method_store(methdata.tmp_store);
433     return method;
434 }
435 
evp_method_store_cache_flush(OSSL_LIB_CTX * libctx)436 int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx)
437 {
438     OSSL_METHOD_STORE *store = get_evp_method_store(libctx);
439 
440     if (store != NULL)
441         return ossl_method_store_cache_flush_all(store);
442     return 1;
443 }
444 
evp_method_store_remove_all_provided(const OSSL_PROVIDER * prov)445 int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov)
446 {
447     OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
448     OSSL_METHOD_STORE *store = get_evp_method_store(libctx);
449 
450     if (store != NULL)
451         return ossl_method_store_remove_all_provided(store, prov);
452     return 1;
453 }
454 
evp_set_parsed_default_properties(OSSL_LIB_CTX * libctx,OSSL_PROPERTY_LIST * def_prop,int loadconfig,int mirrored)455 static int evp_set_parsed_default_properties(OSSL_LIB_CTX *libctx,
456                                              OSSL_PROPERTY_LIST *def_prop,
457                                              int loadconfig,
458                                              int mirrored)
459 {
460     OSSL_METHOD_STORE *store = get_evp_method_store(libctx);
461     OSSL_PROPERTY_LIST **plp = ossl_ctx_global_properties(libctx, loadconfig);
462 
463     if (plp != NULL && store != NULL) {
464         int ret;
465 #ifndef FIPS_MODULE
466         char *propstr = NULL;
467         size_t strsz;
468 
469         if (mirrored) {
470             if (ossl_global_properties_no_mirrored(libctx))
471                 return 0;
472         } else {
473             /*
474              * These properties have been explicitly set on this libctx, so
475              * don't allow any mirroring from a parent libctx.
476              */
477             ossl_global_properties_stop_mirroring(libctx);
478         }
479 
480         strsz = ossl_property_list_to_string(libctx, def_prop, NULL, 0);
481         if (strsz > 0)
482             propstr = OPENSSL_malloc(strsz);
483         if (propstr == NULL) {
484             ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
485             return 0;
486         }
487         if (ossl_property_list_to_string(libctx, def_prop, propstr,
488                                          strsz) == 0) {
489             OPENSSL_free(propstr);
490             ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
491             return 0;
492         }
493         ossl_provider_default_props_update(libctx, propstr);
494         OPENSSL_free(propstr);
495 #endif
496         ossl_property_free(*plp);
497         *plp = def_prop;
498 
499         ret = ossl_method_store_cache_flush_all(store);
500 #ifndef FIPS_MODULE
501         ossl_decoder_cache_flush(libctx);
502 #endif
503         return ret;
504     }
505     ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
506     return 0;
507 }
508 
evp_set_default_properties_int(OSSL_LIB_CTX * libctx,const char * propq,int loadconfig,int mirrored)509 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
510                                    int loadconfig, int mirrored)
511 {
512     OSSL_PROPERTY_LIST *pl = NULL;
513 
514     if (propq != NULL && (pl = ossl_parse_query(libctx, propq, 1)) == NULL) {
515         ERR_raise(ERR_LIB_EVP, EVP_R_DEFAULT_QUERY_PARSE_ERROR);
516         return 0;
517     }
518     if (!evp_set_parsed_default_properties(libctx, pl, loadconfig, mirrored)) {
519         ossl_property_free(pl);
520         return 0;
521     }
522     return 1;
523 }
524 
EVP_set_default_properties(OSSL_LIB_CTX * libctx,const char * propq)525 int EVP_set_default_properties(OSSL_LIB_CTX *libctx, const char *propq)
526 {
527     return evp_set_default_properties_int(libctx, propq, 1, 0);
528 }
529 
evp_default_properties_merge(OSSL_LIB_CTX * libctx,const char * propq,int loadconfig)530 static int evp_default_properties_merge(OSSL_LIB_CTX *libctx, const char *propq,
531                                         int loadconfig)
532 {
533     OSSL_PROPERTY_LIST **plp = ossl_ctx_global_properties(libctx, loadconfig);
534     OSSL_PROPERTY_LIST *pl1, *pl2;
535 
536     if (propq == NULL)
537         return 1;
538     if (plp == NULL || *plp == NULL)
539         return evp_set_default_properties_int(libctx, propq, 0, 0);
540     if ((pl1 = ossl_parse_query(libctx, propq, 1)) == NULL) {
541         ERR_raise(ERR_LIB_EVP, EVP_R_DEFAULT_QUERY_PARSE_ERROR);
542         return 0;
543     }
544     pl2 = ossl_property_merge(pl1, *plp);
545     ossl_property_free(pl1);
546     if (pl2 == NULL) {
547         ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
548         return 0;
549     }
550     if (!evp_set_parsed_default_properties(libctx, pl2, 0, 0)) {
551         ossl_property_free(pl2);
552         return 0;
553     }
554     return 1;
555 }
556 
evp_default_property_is_enabled(OSSL_LIB_CTX * libctx,const char * prop_name)557 static int evp_default_property_is_enabled(OSSL_LIB_CTX *libctx,
558                                            const char *prop_name)
559 {
560     OSSL_PROPERTY_LIST **plp = ossl_ctx_global_properties(libctx, 1);
561 
562     return plp != NULL && ossl_property_is_enabled(libctx, prop_name, *plp);
563 }
564 
EVP_default_properties_is_fips_enabled(OSSL_LIB_CTX * libctx)565 int EVP_default_properties_is_fips_enabled(OSSL_LIB_CTX *libctx)
566 {
567     return evp_default_property_is_enabled(libctx, "fips");
568 }
569 
evp_default_properties_enable_fips_int(OSSL_LIB_CTX * libctx,int enable,int loadconfig)570 int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
571                                            int loadconfig)
572 {
573     const char *query = (enable != 0) ? "fips=yes" : "-fips";
574 
575     return evp_default_properties_merge(libctx, query, loadconfig);
576 }
577 
EVP_default_properties_enable_fips(OSSL_LIB_CTX * libctx,int enable)578 int EVP_default_properties_enable_fips(OSSL_LIB_CTX *libctx, int enable)
579 {
580     return evp_default_properties_enable_fips_int(libctx, enable, 1);
581 }
582 
evp_get_global_properties_str(OSSL_LIB_CTX * libctx,int loadconfig)583 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig)
584 {
585     OSSL_PROPERTY_LIST **plp = ossl_ctx_global_properties(libctx, loadconfig);
586     char *propstr = NULL;
587     size_t sz;
588 
589     if (plp == NULL)
590         return OPENSSL_strdup("");
591 
592     sz = ossl_property_list_to_string(libctx, *plp, NULL, 0);
593     if (sz == 0) {
594         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
595         return NULL;
596     }
597 
598     propstr = OPENSSL_malloc(sz);
599     if (propstr == NULL)
600         return NULL;
601     if (ossl_property_list_to_string(libctx, *plp, propstr, sz) == 0) {
602         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
603         OPENSSL_free(propstr);
604         return NULL;
605     }
606     return propstr;
607 }
608 
EVP_get1_default_properties(OSSL_LIB_CTX * libctx)609 char *EVP_get1_default_properties(OSSL_LIB_CTX *libctx)
610 {
611     return evp_get_global_properties_str(libctx, ossl_lib_ctx_is_global_default(libctx));
612 }
613 
614 struct filter_data_st {
615     int operation_id;
616     void (*user_fn)(void *method, void *arg);
617     void *user_arg;
618 };
619 
filter_on_operation_id(int id,void * method,void * arg)620 static void filter_on_operation_id(int id, void *method, void *arg)
621 {
622     struct filter_data_st *data = arg;
623 
624     if ((id & METHOD_ID_OPERATION_MASK) == data->operation_id)
625         data->user_fn(method, data->user_arg);
626 }
627 
evp_generic_do_all(OSSL_LIB_CTX * libctx,int operation_id,void (* user_fn)(void * method,void * arg),void * user_arg,void * (* new_method)(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov),int (* up_ref_method)(void *),void (* free_method)(void *))628 void evp_generic_do_all(OSSL_LIB_CTX *libctx, int operation_id,
629                         void (*user_fn)(void *method, void *arg),
630                         void *user_arg,
631                         void *(*new_method)(int name_id,
632                                             const OSSL_ALGORITHM *algodef,
633                                             OSSL_PROVIDER *prov),
634                         int (*up_ref_method)(void *),
635                         void (*free_method)(void *))
636 {
637     struct evp_method_data_st methdata;
638     struct filter_data_st data;
639 
640     methdata.libctx = libctx;
641     methdata.tmp_store = NULL;
642     (void)inner_evp_generic_fetch(&methdata, NULL, operation_id, NULL, NULL,
643                                   new_method, up_ref_method, free_method);
644 
645     data.operation_id = operation_id;
646     data.user_fn = user_fn;
647     data.user_arg = user_arg;
648     if (methdata.tmp_store != NULL)
649         ossl_method_store_do_all(methdata.tmp_store, &filter_on_operation_id,
650                                  &data);
651     ossl_method_store_do_all(get_evp_method_store(libctx),
652                              &filter_on_operation_id, &data);
653     dealloc_tmp_evp_method_store(methdata.tmp_store);
654 }
655 
evp_is_a(OSSL_PROVIDER * prov,int number,const char * legacy_name,const char * name)656 int evp_is_a(OSSL_PROVIDER *prov, int number,
657              const char *legacy_name, const char *name)
658 {
659     /*
660      * For a |prov| that is NULL, the library context will be NULL
661      */
662     OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
663     OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
664 
665     if (prov == NULL)
666         number = ossl_namemap_name2num(namemap, legacy_name);
667     return ossl_namemap_name2num(namemap, name) == number;
668 }
669 
evp_names_do_all(OSSL_PROVIDER * prov,int number,void (* fn)(const char * name,void * data),void * data)670 int evp_names_do_all(OSSL_PROVIDER *prov, int number,
671                      void (*fn)(const char *name, void *data),
672                      void *data)
673 {
674     OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
675     OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
676 
677     return ossl_namemap_doall_names(namemap, number, fn, data);
678 }
679