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gnupg/common/membuf.h
Werner Koch 37df3d5f59 Change license for some files in common to LGPLv3+/GPLv2+.
Having the LGPL on the common GnuPG code helps to share code
between GnuPG and related projects (like GPGME and Libassuan).  This
is good for interoperability and to reduces bugs.

* common/asshelp.c, common/asshelp.h, common/asshelp2.c, common/b64dec.c
* common/b64enc.c, common/convert.c, common/dns-cert.c
* common/dns-cert.h common/exechelp-posix.c, common/exechelp-w32.c
* common/exechelp-w32ce.c, common/exechelp.h, common/get-passphrase.c
* common/get-passphrase.h, common/gettime.c, common/gpgrlhelp.c
* common/helpfile.c, common/homedir.c, common/http.c, common/http.h
* common/i18n.c, common/init.c, common/init.h, common/iobuf.c
* common/iobuf.h, common/localename.c, common/membuf.c, common/membuf.h
* common/miscellaneous.c, common/openpgp-oid.c, common/openpgpdefs.h
* common/percent.c, common/pka.c, common/pka.h, common/session-env.c
* common/session-env.h, common/sexp-parse.h, common/sexputil.c
* common/signal.c, common/srv.c, common/srv.h, common/ssh-utils.c
* common/ssh-utils.h, common/sysutils.c, common/sysutils.h
* common/tlv.c, common/tlv.h, common/ttyio.c, common/ttyio.h
* common/userids.c, common/userids.h, common/xasprintf.c: Change
license to LGPLv3+/GPLv2+/
2012-04-20 15:48:48 +02:00

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1.9 KiB
C

/* membuf.h - A simple implementation of a dynamic buffer
* Copyright (C) 2001, 2003 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either
*
* - the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* or
*
* - 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.
*
* or both in parallel, as here.
*
* This file 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef GNUPG_COMMON_MEMBUF_H
#define GNUPG_COMMON_MEMBUF_H
/* The definition of the structure is private, we only need it here,
so it can be allocated on the stack. */
struct private_membuf_s
{
size_t len;
size_t size;
char *buf;
int out_of_core;
};
typedef struct private_membuf_s membuf_t;
/* Return the current length of the membuf. */
#define get_membuf_len(a) ((a)->len)
#define is_membuf_ready(a) ((a)->buf || (a)->out_of_core)
#define MEMBUF_ZERO { 0, 0, NULL, 0}
void init_membuf (membuf_t *mb, int initiallen);
void init_membuf_secure (membuf_t *mb, int initiallen);
void clear_membuf (membuf_t *mb, size_t amount);
void put_membuf (membuf_t *mb, const void *buf, size_t len);
void put_membuf_str (membuf_t *mb, const char *string);
void *get_membuf (membuf_t *mb, size_t *len);
const void *peek_membuf (membuf_t *mb, size_t *len);
#endif /*GNUPG_COMMON_MEMBUF_H*/