Restructuring: pinentry-tqtfeat/restructuring

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

8 files changed, 1444 insertions, 0 deletions

diff --git a/main/pinentry-tqt/secmem/Makefile.am b/main/pinentry-tqt/secmem/Makefile.am
new file mode 100644
index 00000000..9e176e76
--- /dev/null
+++ b/main/pinentry-tqt/secmem/Makefile.am
@@ -0,0 +1,30 @@
+# Secure Memory Makefile
+# Copyright (C) 2002 g10 Code GmbH
+#
+# This file is part of PINENTRY.
+#
+# PINENTRY 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.
+#
+# PINENTRY 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 <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-2.0+
+
+## Process this file with automake to produce Makefile.in
+
+noinst_LIBRARIES = libsecmem.a
+
+libsecmem_a_SOURCES = \
+	memory.h \
+	secmem-util.h \
+	util.h \
+	secmem.c \
+	util.c \
+	secmem++.h
diff --git a/main/pinentry-tqt/secmem/Makefile.in b/main/pinentry-tqt/secmem/Makefile.in
new file mode 100644
index 00000000..333ab946
--- /dev/null
+++ b/main/pinentry-tqt/secmem/Makefile.in
@@ -0,0 +1,645 @@
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+# @configure_input@
+
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+
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+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Secure Memory Makefile
+# Copyright (C) 2002 g10 Code GmbH
+#
+# This file is part of PINENTRY.
+#
+# PINENTRY 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.
+#
+# PINENTRY 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 <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-2.0+
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+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LIBRARIES)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-noinstLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/secmem.Po
+	-rm -f ./$(DEPDIR)/util.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/secmem.Po
+	-rm -f ./$(DEPDIR)/util.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-noinstLIBRARIES cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/main/pinentry-tqt/secmem/memory.h b/main/pinentry-tqt/secmem/memory.h
new file mode 100644
index 00000000..75fe708b
--- /dev/null
+++ b/main/pinentry-tqt/secmem/memory.h
@@ -0,0 +1,55 @@
+/* Quintuple Agent secure memory allocation
+ * Copyright (C) 1998,1999 Free Software Foundation, Inc.
+ * Copyright (C) 1999,2000 Robert Bihlmeyer <robbe@orcus.priv.at>
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _MEMORY_H
+#define _MEMORY_H
+
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#if 0
+}
+#endif
+#endif
+
+
+/* values for flags, hardcoded in secmem.c */
+#define SECMEM_WARN		0
+#define SECMEM_DONT_WARN	1
+#define SECMEM_SUSPEND_WARN	2
+
+void secmem_init( size_t npool );
+void secmem_term( void );
+void *secmem_malloc( size_t size );
+void *secmem_realloc( void *a, size_t newsize );
+void secmem_free( void *a );
+int  m_is_secure( const void *p );
+void secmem_dump_stats(void);
+void secmem_set_flags( unsigned flags );
+unsigned secmem_get_flags(void);
+size_t secmem_get_max_size (void);
+
+#if 0
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+#endif /* _MEMORY_H */
diff --git a/main/pinentry-tqt/secmem/secmem++.h b/main/pinentry-tqt/secmem/secmem++.h
new file mode 100644
index 00000000..b0aa9e9e
--- /dev/null
+++ b/main/pinentry-tqt/secmem/secmem++.h
@@ -0,0 +1,91 @@
+/* STL allocator for secmem
+ * Copyright (C) 2008 Marc Mutz <marc@kdab.com>
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __SECMEM_SECMEMPP_H__
+#define __SECMEM_SECMEMPP_H__
+
+#include "secmem/memory.h"
+#include <cstddef>
+
+namespace secmem {
+
+    template <typename T>
+    class alloc {
+    public:
+        // type definitions:
+        typedef size_t    size_type;
+        typedef ptrdiff_t difference_type;
+        typedef T*        pointer;
+        typedef const T*  const_pointer;
+        typedef T&        reference;
+        typedef const T&  const_reference;
+        typedef T         value_type;
+
+        // rebind
+        template <typename U>
+        struct rebind {
+            typedef alloc<U> other;
+        };
+
+        // address
+        pointer address( reference value ) const {
+            return &value;
+        }
+        const_pointer address( const_reference value ) const {
+            return &value;
+        }
+
+        // (trivial) ctors and dtors
+        alloc() {}
+        alloc( const alloc & ) {}
+        template <typename U> alloc( const alloc<U> & ) {}
+        // copy ctor is ok
+        ~alloc() {}
+
+        // de/allocation
+        size_type max_size() const {
+            return secmem_get_max_size();
+        }
+
+        pointer allocate( size_type n, void * =0 ) {
+            return static_cast<pointer>( secmem_malloc( n * sizeof(T) ) );
+        }
+
+        void deallocate( pointer p, size_type ) {
+            secmem_free( p );
+        }
+
+        // de/construct
+        void construct( pointer p, const T & value ) {
+            void * loc = p;
+            new (loc)T(value);
+        }
+        void destruct( pointer p ) {
+            p->~T();
+        }
+    };
+
+    // equality comparison
+    template <typename T1,typename T2>
+    bool operator==( const alloc<T1> &, const alloc<T2> & ) { return true; }
+    template <typename T1, typename T2>
+    bool operator!=( const alloc<T1> &, const alloc<T2> & ) { return false; }
+
+}
+
+#endif /* __SECMEM_SECMEMPP_H__ */
diff --git a/main/pinentry-tqt/secmem/secmem-util.h b/main/pinentry-tqt/secmem/secmem-util.h
new file mode 100644
index 00000000..b422182b
--- /dev/null
+++ b/main/pinentry-tqt/secmem/secmem-util.h
@@ -0,0 +1,3 @@
+/* This file exists because "util.h" is such a generic name that it is
+   likely to clash with other such files.  */
+#include "util.h"
diff --git a/main/pinentry-tqt/secmem/secmem.c b/main/pinentry-tqt/secmem/secmem.c
new file mode 100644
index 00000000..a12f0b3c
--- /dev/null
+++ b/main/pinentry-tqt/secmem/secmem.c
@@ -0,0 +1,439 @@
+/* secmem.c  -	memory allocation from a secure heap
+ * Copyright (C) 1998, 1999, 2003 Free Software Foundation, Inc.
+ * Copyright (C) 2015 g10 Code GmbH
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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.
+ *
+ * GnuPG 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 <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef HAVE_W32CE_SYSTEM
+#include <errno.h>
+#endif
+#include <stdarg.h>
+#include <unistd.h>
+#if defined(HAVE_MLOCK) || defined(HAVE_MMAP)
+# include <sys/mman.h>
+# include <sys/types.h>
+# include <fcntl.h>
+#endif
+#include <string.h>
+
+#include "memory.h"
+
+#ifdef ORIGINAL_GPG_VERSION
+#include "types.h"
+#include "util.h"
+#else /* ORIGINAL_GPG_VERSION */
+
+#include "util.h"
+
+typedef union {
+    int a;
+    short b;
+    char c[1];
+    long d;
+#ifdef HAVE_U64_TYPE
+    u64 e;
+#endif
+    float f;
+    double g;
+} PROPERLY_ALIGNED_TYPE;
+
+#define log_error log_info
+#define log_bug log_fatal
+
+void
+log_info(char *template, ...)
+{
+  va_list args;
+
+  va_start(args, template);
+  vfprintf(stderr, template, args);
+  va_end(args);
+}
+
+void
+log_fatal(char *template, ...)
+{
+  va_list args;
+
+  va_start(args, template);
+  vfprintf(stderr, template, args);
+  va_end(args);
+  exit(EXIT_FAILURE);
+}
+
+#endif /* ORIGINAL_GPG_VERSION */
+
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+#  define MAP_ANONYMOUS MAP_ANON
+#endif
+
+#define DEFAULT_POOLSIZE 16384
+
+typedef struct memblock_struct MEMBLOCK;
+struct memblock_struct {
+    unsigned size;
+    union {
+	MEMBLOCK *next;
+	PROPERLY_ALIGNED_TYPE aligned;
+    } u;
+};
+
+
+
+static void  *pool;
+static volatile int pool_okay; /* may be checked in an atexit function */
+#if HAVE_MMAP
+static int   pool_is_mmapped;
+#endif
+static size_t poolsize; /* allocated length */
+static size_t poollen;	/* used length */
+static MEMBLOCK *unused_blocks;
+static unsigned max_alloced;
+static unsigned cur_alloced;
+static unsigned max_blocks;
+static unsigned cur_blocks;
+static int disable_secmem;
+static int show_warning;
+static int no_warning;
+static int suspend_warning;
+
+
+static void
+print_warn(void)
+{
+    if( !no_warning )
+	log_info("Warning: using insecure memory!\n");
+}
+
+
+static void
+lock_pool( void *p, size_t n )
+{
+#if defined(HAVE_MLOCK)
+    uid_t uid;
+    int err;
+
+    uid = getuid();
+
+#ifdef HAVE_BROKEN_MLOCK
+    if( uid ) {
+	errno = EPERM;
+	err = -1;
+    }
+    else {
+	err = mlock( p, n );
+    }
+#else
+    err = mlock( p, n );
+#endif
+
+    if( uid && !geteuid() ) {
+	if( setuid( uid ) || getuid() != geteuid()  )
+	    log_fatal("failed to reset uid: %s\n", strerror(errno));
+    }
+
+    if( err ) {
+	if( errno != EPERM
+#ifdef EAGAIN  /* OpenBSD returns this */
+	    && errno != EAGAIN
+#endif
+	  )
+	    log_error("can't lock memory: %s\n", strerror(errno));
+	show_warning = 1;
+    }
+
+#else
+    (void)p;
+    (void)n;
+    log_info("Please note that you don't have secure memory on this system\n");
+#endif
+}
+
+
+static void
+init_pool( size_t n)
+{
+#if HAVE_MMAP
+    size_t pgsize;
+#endif
+
+    poolsize = n;
+
+    if( disable_secmem )
+	log_bug("secure memory is disabled");
+
+#if HAVE_MMAP
+#ifdef HAVE_GETPAGESIZE
+    pgsize = getpagesize();
+#else
+    pgsize = 4096;
+#endif
+
+    poolsize = (poolsize + pgsize -1 ) & ~(pgsize-1);
+# ifdef MAP_ANONYMOUS
+       pool = mmap( 0, poolsize, PROT_READ|PROT_WRITE,
+				 MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+# else /* map /dev/zero instead */
+    {	int fd;
+
+	fd = open("/dev/zero", O_RDWR);
+	if( fd == -1 ) {
+	    log_error("can't open /dev/zero: %s\n", strerror(errno) );
+	    pool = (void*)-1;
+	}
+	else {
+	    pool = mmap( 0, poolsize, PROT_READ|PROT_WRITE,
+				      MAP_PRIVATE, fd, 0);
+	    close (fd);
+	}
+    }
+# endif
+    if( pool == (void*)-1 )
+	log_info("can't mmap pool of %u bytes: %s - using malloc\n",
+			    (unsigned)poolsize, strerror(errno));
+    else {
+	pool_is_mmapped = 1;
+	pool_okay = 1;
+    }
+
+#endif
+    if( !pool_okay ) {
+	pool = malloc( poolsize );
+	if( !pool )
+	    log_fatal("can't allocate memory pool of %u bytes\n",
+						       (unsigned)poolsize);
+	else
+	    pool_okay = 1;
+    }
+    lock_pool( pool, poolsize );
+    poollen = 0;
+}
+
+
+/* concatenate unused blocks */
+static void
+compress_pool(void)
+{
+    /* fixme: we really should do this */
+}
+
+void
+secmem_set_flags( unsigned flags )
+{
+    int was_susp = suspend_warning;
+
+    no_warning = flags & 1;
+    suspend_warning = flags & 2;
+
+    /* and now issue the warning if it is not longer suspended */
+    if( was_susp && !suspend_warning && show_warning ) {
+	show_warning = 0;
+	print_warn();
+    }
+}
+
+unsigned
+secmem_get_flags(void)
+{
+    unsigned flags;
+
+    flags  = no_warning      ? 1:0;
+    flags |= suspend_warning ? 2:0;
+    return flags;
+}
+
+void
+secmem_init( size_t n )
+{
+    if( !n ) {
+#if !defined(HAVE_DOSISH_SYSTEM)
+	uid_t uid;
+
+	disable_secmem=1;
+	uid = getuid();
+	if( uid != geteuid() ) {
+	    if( setuid( uid ) || getuid() != geteuid() )
+		log_fatal("failed to drop setuid\n" );
+	}
+#endif
+    }
+    else {
+	if( n < DEFAULT_POOLSIZE )
+	    n = DEFAULT_POOLSIZE;
+	if( !pool_okay )
+	    init_pool(n);
+	else
+	    log_error("Oops, secure memory pool already initialized\n");
+    }
+}
+
+
+void *
+secmem_malloc( size_t size )
+{
+    MEMBLOCK *mb, *mb2;
+    int compressed=0;
+
+    if( !pool_okay ) {
+	log_info(
+	"operation is not possible without initialized secure memory\n");
+	log_info("(you may have used the wrong program for this task)\n");
+	exit(2);
+    }
+    if( show_warning && !suspend_warning ) {
+	show_warning = 0;
+	print_warn();
+    }
+
+    /* blocks are always a multiple of 32 */
+    size += sizeof(MEMBLOCK);
+    size = ((size + 31) / 32) * 32;
+
+  retry:
+    /* try to get it from the used blocks */
+    for(mb = unused_blocks,mb2=NULL; mb; mb2=mb, mb = mb->u.next )
+	if( mb->size >= size ) {
+	    if( mb2 )
+		mb2->u.next = mb->u.next;
+	    else
+		unused_blocks = mb->u.next;
+	    goto leave;
+	}
+    /* allocate a new block */
+    if( (poollen + size <= poolsize) ) {
+	mb = (void*)((char*)pool + poollen);
+	poollen += size;
+	mb->size = size;
+    }
+    else if( !compressed ) {
+	compressed=1;
+	compress_pool();
+	goto retry;
+    }
+    else
+	return NULL;
+
+  leave:
+    cur_alloced += mb->size;
+    cur_blocks++;
+    if( cur_alloced > max_alloced )
+	max_alloced = cur_alloced;
+    if( cur_blocks > max_blocks )
+	max_blocks = cur_blocks;
+
+    memset (&mb->u.aligned.c, 0,
+	    size - (size_t) &((struct memblock_struct *) 0)->u.aligned.c);
+
+    return &mb->u.aligned.c;
+}
+
+
+void *
+secmem_realloc( void *p, size_t newsize )
+{
+    MEMBLOCK *mb;
+    size_t size;
+    void *a;
+
+    if (! p)
+      return secmem_malloc(newsize);
+
+    mb = (MEMBLOCK*)((char*)p - ((size_t) &((MEMBLOCK*)0)->u.aligned.c));
+    size = mb->size;
+    if( newsize < size )
+	return p; /* it is easier not to shrink the memory */
+    a = secmem_malloc( newsize );
+    memcpy(a, p, size);
+    memset((char*)a+size, 0, newsize-size);
+    secmem_free(p);
+    return a;
+}
+
+
+void
+secmem_free( void *a )
+{
+    MEMBLOCK *mb;
+    size_t size;
+
+    if( !a )
+	return;
+
+    mb = (MEMBLOCK*)((char*)a - ((size_t) &((MEMBLOCK*)0)->u.aligned.c));
+    size = mb->size;
+    /* This does not make much sense: probably this memory is held in the
+     * cache. We do it anyway: */
+    wipememory2(mb, 0xff, size );
+    wipememory2(mb, 0xaa, size );
+    wipememory2(mb, 0x55, size );
+    wipememory2(mb, 0x00, size );
+    mb->size = size;
+    mb->u.next = unused_blocks;
+    unused_blocks = mb;
+    cur_blocks--;
+    cur_alloced -= size;
+}
+
+int
+m_is_secure( const void *p )
+{
+    return p >= pool && p < (void*)((char*)pool+poolsize);
+}
+
+void
+secmem_term()
+{
+    if( !pool_okay )
+	return;
+
+    wipememory2( pool, 0xff, poolsize);
+    wipememory2( pool, 0xaa, poolsize);
+    wipememory2( pool, 0x55, poolsize);
+    wipememory2( pool, 0x00, poolsize);
+#if HAVE_MMAP
+    if( pool_is_mmapped )
+	munmap( pool, poolsize );
+#endif
+    pool = NULL;
+    pool_okay = 0;
+    poolsize=0;
+    poollen=0;
+    unused_blocks=NULL;
+}
+
+
+void
+secmem_dump_stats()
+{
+    if( disable_secmem )
+	return;
+    fprintf(stderr,
+		"secmem usage: %u/%u bytes in %u/%u blocks of pool %lu/%lu\n",
+		cur_alloced, max_alloced, cur_blocks, max_blocks,
+		(ulong)poollen, (ulong)poolsize );
+}
+
+
+size_t
+secmem_get_max_size (void)
+{
+  return poolsize;
+}
diff --git a/main/pinentry-tqt/secmem/util.c b/main/pinentry-tqt/secmem/util.c
new file mode 100644
index 00000000..44609cf6
--- /dev/null
+++ b/main/pinentry-tqt/secmem/util.c
@@ -0,0 +1,116 @@
+/* Quintuple Agent
+ * Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at>
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE 1
+
+#include <unistd.h>
+#ifndef HAVE_W32CE_SYSTEM
+# include <errno.h>
+#endif
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "util.h"
+
+#ifndef HAVE_DOSISH_SYSTEM
+static int uid_set = 0;
+static uid_t real_uid, file_uid;
+#endif /*!HAVE_DOSISH_SYSTEM*/
+
+/* Write DATA of size BYTES to FD, until all is written or an error
+   occurs.  */
+ssize_t
+xwrite(int fd, const void *data, size_t bytes)
+{
+  char *ptr;
+  size_t todo;
+  ssize_t written = 0;
+
+  for (ptr = (char *)data, todo = bytes; todo; ptr += written, todo -= written)
+    {
+      do
+        written = write (fd, ptr, todo);
+      while (
+#ifdef HAVE_W32CE_SYSTEM
+             0
+#else
+             written == -1 && errno == EINTR
+#endif
+             );
+      if (written < 0)
+        break;
+    }
+  return written;
+}
+
+#if 0
+extern int debug;
+
+int
+debugmsg(const char *fmt, ...)
+{
+  va_list va;
+  int ret;
+
+  if (debug) {
+    va_start(va, fmt);
+    fprintf(stderr, "\e[4m");
+    ret = vfprintf(stderr, fmt, va);
+    fprintf(stderr, "\e[24m");
+    va_end(va);
+    return ret;
+  } else
+    return 0;
+}
+#endif
+
+/* initialize uid variables */
+#ifndef HAVE_DOSISH_SYSTEM
+static void
+init_uids(void)
+{
+  real_uid = getuid();
+  file_uid = geteuid();
+  uid_set = 1;
+}
+#endif
+
+
+/* drop all additional privileges */
+void
+drop_privs()
+{
+#ifndef HAVE_DOSISH_SYSTEM
+  if (!uid_set)
+    init_uids();
+  if (real_uid != file_uid) {
+    if (setuid(real_uid) < 0) {
+      perror("dropping privileges failed");
+      exit(EXIT_FAILURE);
+    }
+    file_uid = real_uid;
+  }
+#endif
+}
diff --git a/main/pinentry-tqt/secmem/util.h b/main/pinentry-tqt/secmem/util.h
new file mode 100644
index 00000000..3c8ffb8a
--- /dev/null
+++ b/main/pinentry-tqt/secmem/util.h
@@ -0,0 +1,65 @@
+/* Quintuple Agent utilities
+ * Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at>
+ * Copyright (C) 2003 g10 Code GmbH
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _UTIL_H
+#define _UTIL_H
+
+#include <sys/types.h>
+
+#ifndef HAVE_TYPE_BYTE
+# undef byte
+# if !(defined(_WIN32) && defined(cbNDRContext))
+   /* Windows typedefs byte in the rpc headers.  Avoid warning about
+      double definition.  */
+   typedef unsigned char byte;
+# endif
+# define HAVE_TYPE_BYTE
+#endif
+
+#ifndef HAVE_TYPE_ULONG
+# undef ulong
+  typedef unsigned long ulong;
+# define HAVE_TYPE_ULONG
+#endif
+
+
+ssize_t xwrite(int, const void *, size_t); /* write until finished */
+int debugmsg(const char *, ...); /* output a debug message if debugging==on */
+void drop_privs(void);		/* finally drop privileges */
+
+
+/* To avoid that a compiler optimizes certain memset calls away, these
+   macros may be used instead. */
+#define wipememory2(_ptr,_set,_len) do { \
+              volatile char *_vptr=(volatile char *)(_ptr); \
+              size_t _vlen=(_len); \
+              while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
+                  } while(0)
+#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len)
+#define wipe(_ptr,_len)       wipememory2(_ptr,0,_len)
+
+
+
+
+#define xtoi_1(p)   (*(p) <= '9'? (*(p)- '0'): \
+                     *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
+#define xtoi_2(p)   ((xtoi_1(p) * 16) + xtoi_1((p)+1))
+
+
+#endif