2 * Copyright 2000-2020 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
13 #include "internal/conf.h"
14 #include "crypto/ctype.h"
15 #include <openssl/crypto.h>
16 #include <openssl/err.h>
17 #include <openssl/conf.h>
18 #include <openssl/conf_api.h>
19 #include <openssl/lhash.h>
21 static CONF_METHOD *default_CONF_method = NULL;
23 /* Init a 'CONF' structure from an old LHASH */
25 void CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash)
27 if (default_CONF_method == NULL)
28 default_CONF_method = NCONF_default();
30 default_CONF_method->init(conf);
35 * The following section contains the "CONF classic" functions, rewritten in
36 * terms of the new CONF interface.
39 int CONF_set_default_method(CONF_METHOD *meth)
41 default_CONF_method = meth;
45 LHASH_OF(CONF_VALUE) *CONF_load(LHASH_OF(CONF_VALUE) *conf, const char *file,
48 LHASH_OF(CONF_VALUE) *ltmp;
51 #ifdef OPENSSL_SYS_VMS
52 in = BIO_new_file(file, "r");
54 in = BIO_new_file(file, "rb");
57 CONFerr(CONF_F_CONF_LOAD, ERR_R_SYS_LIB);
61 ltmp = CONF_load_bio(conf, in, eline);
67 #ifndef OPENSSL_NO_STDIO
68 LHASH_OF(CONF_VALUE) *CONF_load_fp(LHASH_OF(CONF_VALUE) *conf, FILE *fp,
72 LHASH_OF(CONF_VALUE) *ltmp;
73 if ((btmp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
74 CONFerr(CONF_F_CONF_LOAD_FP, ERR_R_BUF_LIB);
77 ltmp = CONF_load_bio(conf, btmp, eline);
83 LHASH_OF(CONF_VALUE) *CONF_load_bio(LHASH_OF(CONF_VALUE) *conf, BIO *bp,
89 CONF_set_nconf(&ctmp, conf);
91 ret = NCONF_load_bio(&ctmp, bp, eline);
97 STACK_OF(CONF_VALUE) *CONF_get_section(LHASH_OF(CONF_VALUE) *conf,
104 CONF_set_nconf(&ctmp, conf);
105 return NCONF_get_section(&ctmp, section);
109 char *CONF_get_string(LHASH_OF(CONF_VALUE) *conf, const char *group,
113 return NCONF_get_string(NULL, group, name);
116 CONF_set_nconf(&ctmp, conf);
117 return NCONF_get_string(&ctmp, group, name);
121 long CONF_get_number(LHASH_OF(CONF_VALUE) *conf, const char *group,
129 status = NCONF_get_number_e(NULL, group, name, &result);
132 CONF_set_nconf(&ctmp, conf);
133 status = NCONF_get_number_e(&ctmp, group, name, &result);
136 return status == 0 ? 0L : result;
139 void CONF_free(LHASH_OF(CONF_VALUE) *conf)
142 CONF_set_nconf(&ctmp, conf);
143 NCONF_free_data(&ctmp);
146 #ifndef OPENSSL_NO_STDIO
147 int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out)
152 if ((btmp = BIO_new_fp(out, BIO_NOCLOSE)) == NULL) {
153 CONFerr(CONF_F_CONF_DUMP_FP, ERR_R_BUF_LIB);
156 ret = CONF_dump_bio(conf, btmp);
162 int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out)
165 CONF_set_nconf(&ctmp, conf);
166 return NCONF_dump_bio(&ctmp, out);
170 * The following section contains the "New CONF" functions. They are
171 * completely centralised around a new CONF structure that may contain
172 * basically anything, but at least a method pointer and a table of data.
173 * These functions are also written in terms of the bridge functions used by
174 * the "CONF classic" functions, for consistency.
177 CONF *NCONF_new_with_libctx(OPENSSL_CTX *libctx, CONF_METHOD *meth)
182 meth = NCONF_default();
184 ret = meth->create(meth);
186 CONFerr(0, ERR_R_MALLOC_FAILURE);
189 ret->libctx = libctx;
194 CONF *NCONF_new(CONF_METHOD *meth)
196 return NCONF_new_with_libctx(NULL, meth);
199 void NCONF_free(CONF *conf)
203 conf->meth->destroy(conf);
206 void NCONF_free_data(CONF *conf)
210 conf->meth->destroy_data(conf);
213 int NCONF_load(CONF *conf, const char *file, long *eline)
216 CONFerr(CONF_F_NCONF_LOAD, CONF_R_NO_CONF);
220 return conf->meth->load(conf, file, eline);
223 #ifndef OPENSSL_NO_STDIO
224 int NCONF_load_fp(CONF *conf, FILE *fp, long *eline)
228 if ((btmp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
229 CONFerr(CONF_F_NCONF_LOAD_FP, ERR_R_BUF_LIB);
232 ret = NCONF_load_bio(conf, btmp, eline);
238 int NCONF_load_bio(CONF *conf, BIO *bp, long *eline)
241 CONFerr(CONF_F_NCONF_LOAD_BIO, CONF_R_NO_CONF);
245 return conf->meth->load_bio(conf, bp, eline);
248 STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section)
251 CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_CONF);
255 if (section == NULL) {
256 CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_SECTION);
260 return _CONF_get_section_values(conf, section);
263 char *NCONF_get_string(const CONF *conf, const char *group, const char *name)
265 char *s = _CONF_get_string(conf, group, name);
268 * Since we may get a value from an environment variable even if conf is
269 * NULL, let's check the value first
275 CONFerr(CONF_F_NCONF_GET_STRING,
276 CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE);
279 CONFerr(CONF_F_NCONF_GET_STRING, CONF_R_NO_VALUE);
280 ERR_add_error_data(4, "group=", group, " name=", name);
284 static int default_is_number(const CONF *conf, char c)
286 return ossl_isdigit(c);
289 static int default_to_int(const CONF *conf, char c)
291 return (int)(c - '0');
294 int NCONF_get_number_e(const CONF *conf, const char *group, const char *name,
299 int (*is_number)(const CONF *, char) = &default_is_number;
300 int (*to_int)(const CONF *, char) = &default_to_int;
302 if (result == NULL) {
303 CONFerr(CONF_F_NCONF_GET_NUMBER_E, ERR_R_PASSED_NULL_PARAMETER);
307 str = NCONF_get_string(conf, group, name);
313 if (conf->meth->is_number != NULL)
314 is_number = conf->meth->is_number;
315 if (conf->meth->to_int != NULL)
316 to_int = conf->meth->to_int;
318 for (res = 0; is_number(conf, *str); str++) {
319 const int d = to_int(conf, *str);
321 if (res > (LONG_MAX - d) / 10L) {
322 CONFerr(CONF_F_NCONF_GET_NUMBER_E, CONF_R_NUMBER_TOO_LARGE);
332 #ifndef OPENSSL_NO_STDIO
333 int NCONF_dump_fp(const CONF *conf, FILE *out)
337 if ((btmp = BIO_new_fp(out, BIO_NOCLOSE)) == NULL) {
338 CONFerr(CONF_F_NCONF_DUMP_FP, ERR_R_BUF_LIB);
341 ret = NCONF_dump_bio(conf, btmp);
347 int NCONF_dump_bio(const CONF *conf, BIO *out)
350 CONFerr(CONF_F_NCONF_DUMP_BIO, CONF_R_NO_CONF);
354 return conf->meth->dump(conf, out);
358 * These routines call the C malloc/free, to avoid intermixing with
359 * OpenSSL function pointers before the library is initialized.
361 OPENSSL_INIT_SETTINGS *OPENSSL_INIT_new(void)
363 OPENSSL_INIT_SETTINGS *ret = malloc(sizeof(*ret));
368 memset(ret, 0, sizeof(*ret));
369 ret->flags = DEFAULT_CONF_MFLAGS;
375 #ifndef OPENSSL_NO_STDIO
376 int OPENSSL_INIT_set_config_filename(OPENSSL_INIT_SETTINGS *settings,
377 const char *filename)
379 char *newfilename = NULL;
381 if (filename != NULL) {
382 newfilename = strdup(filename);
383 if (newfilename == NULL)
387 free(settings->filename);
388 settings->filename = newfilename;
393 void OPENSSL_INIT_set_config_file_flags(OPENSSL_INIT_SETTINGS *settings,
396 settings->flags = flags;
399 int OPENSSL_INIT_set_config_appname(OPENSSL_INIT_SETTINGS *settings,
402 char *newappname = NULL;
404 if (appname != NULL) {
405 newappname = strdup(appname);
406 if (newappname == NULL)
410 free(settings->appname);
411 settings->appname = newappname;
417 void OPENSSL_INIT_free(OPENSSL_INIT_SETTINGS *settings)
419 free(settings->filename);
420 free(settings->appname);