2004-01-30 13:37:09 +01:00
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/* xasprintf.c
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2005-02-25 17:14:55 +01:00
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* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
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2021-03-04 16:52:03 +01:00
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* Copyright (C) 2020 g10 Code GmbH
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2004-01-30 13:37:09 +01:00
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*
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* This file is part of GnuPG.
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*
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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 15:43:06 +02:00
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either
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2004-01-30 13:37:09 +01:00
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*
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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 15:43:06 +02:00
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* - the GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* or
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*
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* - the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* or both in parallel, as here.
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*
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* This file is distributed in the hope that it will be useful,
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2004-01-30 13:37:09 +01:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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2016-11-05 12:02:19 +01:00
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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2004-01-30 13:37:09 +01:00
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "util.h"
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/* Same as asprintf but return an allocated buffer suitable to be
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freed using xfree. This function simply dies on memory failure,
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2014-08-26 17:47:22 +02:00
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thus no extra check is required.
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FIXME: We should remove these functions in favor of gpgrt_bsprintf
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and a xgpgrt_bsprintf or rename them to xbsprintf and
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xtrybsprintf. */
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2004-01-30 13:37:09 +01:00
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char *
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xasprintf (const char *fmt, ...)
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{
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va_list ap;
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2007-05-15 18:10:48 +02:00
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char *buf;
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2004-01-30 13:37:09 +01:00
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va_start (ap, fmt);
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2014-08-26 17:47:22 +02:00
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if (gpgrt_vasprintf (&buf, fmt, ap) < 0)
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2007-05-15 18:10:48 +02:00
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log_fatal ("estream_asprintf failed: %s\n", strerror (errno));
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2004-01-30 13:37:09 +01:00
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va_end (ap);
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2007-05-15 18:10:48 +02:00
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return buf;
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2004-01-30 13:37:09 +01:00
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}
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2005-02-25 17:14:55 +01:00
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* configure.ac (gl_INIT): Add gnulib stuff.
(fseeko, ftello, ttyname, isascii): Replaced the AC_REPLACE_FUNCS
by a simple check.
(putc_unlocked): Removed check. Not used.
(strsep, mkdtemp, asprintf): Replaced checks by gnulib checks.
(xsize): Added will probably come handy soon.
(CFLAGS): Use -Wformat-security instead of
-Wformat-nonliteral. Add --Wno-format-y2k.
* gl/, gl/m4/: New.
* gpg-agent.c: Include setenv.h.
* Makefile.am (AM_CPPFLAGS): Added.
* util.h: Add some includes for gnulib.
(ttyname, isascii): Define them inline.
* fseeko.c, ftello.c: Removed.
* strsep.c, mkdtemp.c: Removed.
* ttyname.c, isascii.c: Removed.
* mkdtemp.c: Removed.
* exec.c: Include mkdtemp.h
* keybox-file.c (ftello) [!HAVE_FSEEKO]: New replacement
function. Copied from ../common/ftello.c.
* keybox-update.c (fseeko) [!HAVE_FSEEKO]: New replacement
function. Copied from ../common/iobuf.c.
* scdaemon.c: Include mkdtemp.h.
* misc.c: Include setenv.h.
* symcryptrun.c: Include mkdtemp.h.
2005-06-01 17:46:01 +02:00
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/* Same as above but return NULL on memory failure. */
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2005-02-25 17:14:55 +01:00
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char *
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xtryasprintf (const char *fmt, ...)
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{
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int rc;
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va_list ap;
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2007-05-15 18:10:48 +02:00
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char *buf;
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2005-02-25 17:14:55 +01:00
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va_start (ap, fmt);
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2014-08-26 17:47:22 +02:00
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rc = gpgrt_vasprintf (&buf, fmt, ap);
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2005-02-25 17:14:55 +01:00
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va_end (ap);
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if (rc < 0)
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return NULL;
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2007-05-15 18:10:48 +02:00
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return buf;
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2005-02-25 17:14:55 +01:00
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}
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2021-03-04 16:52:03 +01:00
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/* This is safe version of realloc useful for reallocing a calloced
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* array. There are two ways to call it: The first example
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* reallocates the array A to N elements each of SIZE but does not
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* clear the newly allocated elements:
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*
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* p = xtryreallocarray (a, n, n, nsize);
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*
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* Note that when NOLD is larger than N no cleaning is needed anyway.
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* The second example reallocates an array of size NOLD to N elements
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* each of SIZE but clear the newly allocated elements:
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*
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* p = xtryreallocarray (a, nold, n, nsize);
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*
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* Note that xtryreallocarray (NULL, 0, n, nsize) is equivalent to
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* xtrycalloc (n, nsize).
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*
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* The same function under the name gpgrt_reallocarray exists in
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* libgpg-error but only since version 1.38 and thus we use a copy
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* here.
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*/
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void *
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xtryreallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size)
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{
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size_t oldbytes, bytes;
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char *p;
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bytes = nmemb * size; /* size_t is unsigned so the behavior on overflow
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* is defined. */
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if (size && bytes / size != nmemb)
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{
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gpg_err_set_errno (ENOMEM);
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return NULL;
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}
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p = xtryrealloc (a, bytes);
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if (p && oldnmemb < nmemb)
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{
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/* OLDNMEMBS is lower than NMEMB thus the user asked for a
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calloc. Clear all newly allocated members. */
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oldbytes = oldnmemb * size;
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if (size && oldbytes / size != oldnmemb)
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{
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xfree (p);
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gpg_err_set_errno (ENOMEM);
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return NULL;
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}
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memset (p + oldbytes, 0, bytes - oldbytes);
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}
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return p;
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}
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