=head1 NAME
-CONF_modules_load_file, CONF_modules_load - OpenSSL configuration functions
+CONF_modules_load_file_with_libctx, CONF_modules_load_file, CONF_modules_load
+- OpenSSL configuration functions
=head1 SYNOPSIS
#include <openssl/conf.h>
+ int CONF_modules_load_file_with_libctx(OPENSSL_CTX *libctx,
+ const char *filename,
+ const char *appname, unsigned long flags);
int CONF_modules_load_file(const char *filename, const char *appname,
unsigned long flags);
int CONF_modules_load(const CONF *cnf, const char *appname,
=head1 DESCRIPTION
-The function CONF_modules_load_file() configures OpenSSL using file
-B<filename> and application name B<appname>. If B<filename> is NULL
-the standard OpenSSL configuration file is used. If B<appname> is
-NULL the standard OpenSSL application name B<openssl_conf> is used.
+The function CONF_modules_load_file_with_libctx() configures OpenSSL using
+library context B<libctx> file B<filename> and application name B<appname>.
+If B<filename> is NULL the standard OpenSSL configuration file is used.
+If B<appname> is NULL the standard OpenSSL application name B<openssl_conf> is
+used.
The behaviour can be customized using B<flags>.
+CONF_modules_load_file() is the same as CONF_modules_load_file_with_libctx() but
+has a NULL library context.
+
CONF_modules_load() is identical to CONF_modules_load_file() except it
reads configuration information from B<cnf>.
The following B<flags> are currently recognized:
-B<CONF_MFLAGS_IGNORE_ERRORS> if set errors returned by individual
+If B<CONF_MFLAGS_IGNORE_ERRORS> is set errors returned by individual
configuration modules are ignored. If not set the first module error is
considered fatal and no further modules are loaded.
Normally any modules errors will add error information to the error queue. If
B<CONF_MFLAGS_SILENT> is set no error information is added.
+If B<CONF_MFLAGS_IGNORE_RETURN_CODES> is set the function unconditionally
+returns success.
+This is used by default in L<OPENSSL_init_crypto(3)> to ignore any errors in
+the default system-wide configuration file, as having all OpenSSL applications
+fail to start when there are potentially minor issues in the file is too risky.
+Applications calling B<CONF_modules_load_file_with_libctx> explicitly should not
+generally set this flag.
+
If B<CONF_MFLAGS_NO_DSO> is set configuration module loading from DSOs is
disabled.
B<CONF_MFLAGS_DEFAULT_SECTION> if set and B<appname> is not NULL will use the
default section pointed to by B<openssl_conf> if B<appname> does not exist.
-By using CONF_modules_load_file() with appropriate flags an application can
-customise application configuration to best suit its needs. In some cases the
-use of a configuration file is optional and its absence is not an error: in
-this case B<CONF_MFLAGS_IGNORE_MISSING_FILE> would be set.
+By using CONF_modules_load_file_with_libctx() with appropriate flags an
+application can customise application configuration to best suit its needs.
+In some cases the use of a configuration file is optional and its absence is not
+an error: in this case B<CONF_MFLAGS_IGNORE_MISSING_FILE> would be set.
Errors during configuration may also be handled differently by different
applications. For example in some cases an error may simply print out a warning
configuration file themselves and have finer control over how errors are
treated.
+=head1 RETURN VALUES
+
+These functions return 1 for success and a zero or negative value for
+failure. If module errors are not ignored the return code will reflect the
+return value of the failing module (this will always be zero or negative).
+
=head1 EXAMPLES
Load a configuration file and print out any errors and exit (missing file
considered fatal):
- if (CONF_modules_load_file(NULL, NULL, 0) <= 0) {
+ if (CONF_modules_load_file_with_libctx(libctx, NULL, NULL, 0) <= 0) {
fprintf(stderr, "FATAL: error loading configuration file\n");
ERR_print_errors_fp(stderr);
exit(1);
Load default configuration file using the section indicated by "myapp",
tolerate missing files, but exit on other errors:
- if (CONF_modules_load_file(NULL, "myapp",
- CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
+ if (CONF_modules_load_file_with_libctx(NULL, NULL, "myapp",
+ CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
fprintf(stderr, "FATAL: error loading configuration file\n");
ERR_print_errors_fp(stderr);
exit(1);
Load custom configuration file and section, only print warnings on error,
missing configuration file ignored:
- if (CONF_modules_load_file("/something/app.cnf", "myapp",
- CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
+ if (CONF_modules_load_file_with_libctx(NULL, "/something/app.cnf", "myapp",
+ CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
fprintf(stderr, "WARNING: error loading configuration file\n");
ERR_print_errors_fp(stderr);
}
fprintf(stderr, "Error opening configuration file\n");
/* Other missing configuration file behaviour */
} else {
- cnf = NCONF_new(NULL);
+ cnf = NCONF_new_with_libctx(libctx, NULL);
if (NCONF_load_fp(cnf, fp, &eline) == 0) {
fprintf(stderr, "Error on line %ld of configuration file\n", eline);
ERR_print_errors_fp(stderr);
NCONF_free(cnf);
}
-=head1 RETURN VALUES
-
-These functions return 1 for success and a zero or negative value for
-failure. If module errors are not ignored the return code will reflect the
-return value of the failing module (this will always be zero or negative).
-
=head1 SEE ALSO
-L<config(5)>, L<OPENSSL_config(3)>
+L<config(5)>,
+L<OPENSSL_config(3)>,
+L<NCONF_new_with_libctx(3)>
=head1 COPYRIGHT
-Copyright 2004-2017 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.
-Licensed under the OpenSSL license (the "License"). You may not use
+Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
projects / openssl.git / blobdiff