openssl/crypto/err
Viktor Dukhovni df1f538f28 More configurable crypto and ssl library initialization
1.  In addition to overriding the default application name,
    one can now also override the configuration file name
    and flags passed to CONF_modules_load_file().

2.  By default we still keep going when configuration file
    processing fails.  But, applications that want to be strict
    about initialization errors can now make explicit flag
    choices via non-null OPENSSL_INIT_SETTINGS that omit the
    CONF_MFLAGS_IGNORE_RETURN_CODES flag (which had so far been
    both undocumented and unused).

3.  In OPENSSL_init_ssl() do not request OPENSSL_INIT_LOAD_CONFIG
    if the options already include OPENSSL_INIT_NO_LOAD_CONFIG.

4.  Don't set up atexit() handlers when called with INIT_BASE_ONLY.

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7986)
2019-01-07 14:02:28 -05:00
..
build.info
err_all.c Following the license change, modify the boilerplates in crypto/err/ 2018-12-06 14:53:53 +01:00
err_prn.c Following the license change, modify the boilerplates in crypto/err/ 2018-12-06 14:53:53 +01:00
err.c More configurable crypto and ssl library initialization 2019-01-07 14:02:28 -05:00
openssl.ec Fix some TLSv1.3 alert issues 2018-07-31 09:31:50 +01:00
openssl.txt make update 2018-12-10 10:07:15 +01:00
README

Adding new libraries
--------------------

When adding a new sub-library to OpenSSL, assign it a library number
ERR_LIB_XXX, define a macro XXXerr() (both in err.h), add its
name to ERR_str_libraries[] (in crypto/err/err.c), and add
ERR_load_XXX_strings() to the ERR_load_crypto_strings() function
(in crypto/err/err_all.c). Finally, add an entry:

    L      XXX     xxx.h   xxx_err.c

to crypto/err/openssl.ec, and add xxx_err.c to the Makefile.
Running make errors will then generate a file xxx_err.c, and
add all error codes used in the library to xxx.h.

Additionally the library include file must have a certain form.
Typically it will initially look like this:

    #ifndef HEADER_XXX_H
    #define HEADER_XXX_H

    #ifdef __cplusplus
    extern "C" {
    #endif

    /* Include files */

    #include <openssl/bio.h>
    #include <openssl/x509.h>

    /* Macros, structures and function prototypes */


    /* BEGIN ERROR CODES */

The BEGIN ERROR CODES sequence is used by the error code
generation script as the point to place new error codes, any text
after this point will be overwritten when make errors is run.
The closing #endif etc will be automatically added by the script.

The generated C error code file xxx_err.c will load the header
files stdio.h, openssl/err.h and openssl/xxx.h so the
header file must load any additional header files containing any
definitions it uses.