Add gpgme_set_global_malloc_hooks().

* configure.ac: Remove check for vasprintf().
* doc/gpgme.texi: Add documentation.
* src/gpgme.h.in (gpgme_malloc_hooks,gpgme_malloc_hooks_t): New.
* src/gpgme.h.in (gpgme_set_global_malloc_hooks): New prototype.
* src/mem.c, src/mem.h: New.
* src/gpgme.c (gpgme_set_global_malloc_hooks): New.
* src/gpgme.def, src/libgpgme.vers: Add gpgme_set_global_malloc_hooks.
* src/vasprintf.c (vasprintf): Rename to _gpgme_vasprintf().
* src/vasprintf.c (asprintf): Rename to _gpgme_asprintf().
* src/Makefile.am: Add mem.c, mem.h and vasprintf.c to main_sources.
* src/assuan-support.c, src/ath-pthread.c, src/conversion.c,
src/data-compat.c, src/data-identify.c, src/data-mem.c, src/data.c,
src/debug.c, src/decrypt.c, src/dirinfo.c, src/encrypt.c,
src/engine-assuan.c, src/engine-g13.c, src/engine-gpg.c,
src/engine-gpgconf.c, src/engine-gpgsm.c, src/engine-spawn.c,
src/engine-uiserver.c, src/engine.c, src/export.c, src/genkey.c,
src/get-env.c, src/gpgme-w32spawn.c, src/gpgme.c, src/import.c,
src/key.c, src/keylist.c, src/op-support.c, src/passphrase.c,
src/posix-io.c, src/posix-util.c, src/progress.c, src/setenv.c,
src/sig-notation.c, src/sign.c, src/signers.c, src/trust-item.c,
src/trustlist.c, src/util.h, src/verify.c, src/version.c,
src/vfs-create.c, src/vfs-mount.c, src/w32-ce.c, src/w32-ce.h,
src/w32-glib-io.c, src/w32-io.c, src/w32-sema.c, src/w32-util.c,
src/wait-global.c, src/wait.c:
Change allocation functions: free() to _gpgme_free(), malloc() to
_gpgme_malloc(), calloc() to _gpgme_calloc(), realloc() to
_gpgme_realloc() and strdup() to _gpgme_strdup().

--
Mostly borrowed from libassuan for custom memory handling. This changes
vasprintf.c to implement _gpgme_asprintf() and _gpgme_vasprintf() and
will always use the built-in vasprintf() even when provided by the OS.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/mem.c b/src/mem.c
new file mode 100644
index 00000000..99ae41a5
--- /dev/null
+++ b/src/mem.c
@@ -0,0 +1,69 @@
+/* gpgme.c - GnuPG Made Easy.
+   Copyright (C) 2014 g10 Code GmbH
+
+   This file is part of GPGME.
+
+   GPGME is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   GPGME 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include "gpgme.h"
+#include "util.h"
+#include "mem.h"
+
+/* The default memory management functions.  */
+static struct gpgme_malloc_hooks _gpgme_default_malloc_hooks =
+  { malloc, calloc, realloc, free };
+
+void *
+_gpgme_malloc (size_t size)
+{
+  return _gpgme_default_malloc_hooks.malloc (size);
+}
+
+void *
+_gpgme_calloc (size_t nmemb, size_t size)
+{
+  return _gpgme_default_malloc_hooks.calloc (nmemb, size);
+}
+
+void *
+_gpgme_realloc (void *p, size_t size)
+{
+  return _gpgme_default_malloc_hooks.realloc (p, size);
+}
+
+void
+_gpgme_free (void *p)
+{
+  _gpgme_default_malloc_hooks.free (p);
+}
+
+char *
+_gpgme_strdup (const char *s)
+{
+  char *r = _gpgme_malloc (strlen(s)+1);
+
+  stpcpy (r, s);
+  return r;
+}
+
+void
+_gpgme_set_global_malloc_hooks (gpgme_malloc_hooks_t malloc_hooks)
+{
+  _gpgme_default_malloc_hooks = *malloc_hooks;
+}