pidgin/pidgin

certificate: Use SHA256 fingerprints instead of SHA1
release-2.x.y
2017-03-06, dx
b3d0ba7c75f6
certificate: Use SHA256 fingerprints instead of SHA1

This meant adding a get_fingerprint_sha256 function to the certificate scheme
structs, which meant adding a struct_size member because we ran out of reserved
members there.

The API-facing purple_certificate_get_fingerprint_sha256() has a fallback
parameter to use sha1 if the SSL plugin doesn't implement this function
(probably an outdated installation, or a third party SSL plugin). When using
the function for display purposes, the fallback is disabled and it returns
NULL, but when using it to compare certificates it's better to have at least
the SHA1.

In functions like purple_certificate_display_x509(), some slight changes to
translatable strings would have been required. Since we're in a string freeze
right now, I avoided those by concatenating a language-neutral "SHA256: %s" at
the end of those messages. The SHA1 line used the word "fingerprint" but we
can't reuse that translation. This should be cleaned up after the release.
/**
* @file version.h Purple Versioning
*
* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#ifndef _PURPLE_VERSION_H_
#define _PURPLE_VERSION_H_
/** The major version of the running libpurple. */
#define PURPLE_MAJOR_VERSION (@PURPLE_MAJOR_VERSION@)
/** The minor version of the running libpurple. */
#define PURPLE_MINOR_VERSION (@PURPLE_MINOR_VERSION@)
/** The micro version of the running libpurple. */
#define PURPLE_MICRO_VERSION (@PURPLE_MICRO_VERSION@)
#define PURPLE_VERSION_CHECK(x,y,z) ((x) == PURPLE_MAJOR_VERSION && \
((y) < PURPLE_MINOR_VERSION || \
((y) == PURPLE_MINOR_VERSION && (z) <= PURPLE_MICRO_VERSION)))
#ifdef __cplusplus
extern "C" {
#endif
/**
* Checks that the libpurple version is compatible with the requested
* version
*
* @param required_major: the required major version.
* @param required_minor: the required minor version.
* @param required_micro: the required micro version.
*
* @return NULL if the versions are compatible, or a string describing
* the version mismatch if not compatible.
*/
const char *purple_version_check(guint required_major, guint required_minor, guint required_micro);
/**
* The major version of the running libpurple. Contrast with
* #PURPLE_MAJOR_VERSION, which expands at compile time to the major version of
* libpurple being compiled against.
*
* @since 2.4.0
*/
extern const guint purple_major_version;
/**
* The minor version of the running libpurple. Contrast with
* #PURPLE_MINOR_VERSION, which expands at compile time to the minor version of
* libpurple being compiled against.
*
* @since 2.4.0
*/
extern const guint purple_minor_version;
/**
*
* The micro version of the running libpurple. Contrast with
* #PURPLE_MICRO_VERSION, which expands at compile time to the micro version of
* libpurple being compiled against.
*
* @since 2.4.0
*/
extern const guint purple_micro_version;
#ifdef __cplusplus
}
#endif
#endif /* _PURPLE_VERSION_H_ */