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11
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Program: Pinentry
Bug reports: <gpa-dev@gnupg.org>
Security related bug reports: <security@gnupg.org>
License: GPLv2+
Robert Bihlmeyer <robbe@orcus.priv.at>
Werner Koch, g10 Code GmbH <wk@gnupg.org>
Steffen Hansen, Klar<61>lvdalens Datakonsult AB <steffen@klaralvdalens-datakonsult.se>
Marcus Brinkmann, g10 Code GmbH <marcus@g10code.com>
Timo Schulz, g10 Code GmbH
Neal Walfied, g10 Code GmbH <neal@gnu.org>

280
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
675 Mass Ave, Cambridge, MA 02139, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
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END OF TERMS AND CONDITIONS

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include ../config.mk
SRC = util.c pinentry.c argparse.c password-cache.c secmem.c
OBJ = ${SRC:.c=.o}
CFLAGS += -DHAVE_MLOCK
all: pinentry
.c.o:
@echo CC $<
@${CC} -c ${CFLAGS} $<
${OBJ}: pinentry.h argparse.h password-cache.h memory.h util.h
pinentry: pinentry.o argparse.o password-cache.o secmem.o util.o
clean:
@echo cleaning
@rm -f ${OBJ}
.PHONY: all clean pinentry

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pinentry-dmenu/pinentry/argparse.h Normal file
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/* argparse.h - Argument parser for option handling.
* Copyright (C) 1998,1999,2000,2001,2006 Free Software Foundation, Inc.
*
* This file is part of JNLIB, which is a subsystem of GnuPG.
*
* JNLIB 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.
*
* JNLIB 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 copies of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBJNLIB_ARGPARSE_H
#define LIBJNLIB_ARGPARSE_H
#include <stdio.h>
typedef struct
{
int *argc; /* Pointer to ARGC (value subject to change). */
char ***argv; /* Pointer to ARGV (value subject to change). */
unsigned int flags; /* Global flags. May be set prior to calling the
parser. The parser may change the value. */
int err; /* Print error description for last option.
Either 0, ARGPARSE_PRINT_WARNING or
ARGPARSE_PRINT_ERROR. */
int r_opt; /* Returns option code. */
int r_type; /* Returns type of option value. */
union {
int ret_int;
long ret_long;
unsigned long ret_ulong;
char *ret_str;
} r; /* Return values */
struct {
int idx;
int inarg;
int stopped;
const char *last;
void *aliases;
const void *cur_alias;
void *iio_list;
} internal; /* Private - do not change. */
} ARGPARSE_ARGS;
typedef struct
{
int short_opt;
const char *long_opt;
unsigned int flags;
const char *description; /* Optional option description. */
} ARGPARSE_OPTS;
/* Global flags (ARGPARSE_ARGS). */
#define ARGPARSE_FLAG_KEEP 1 /* Do not remove options form argv. */
#define ARGPARSE_FLAG_ALL 2 /* Do not stop at last option but return
remaining args with R_OPT set to -1. */
#define ARGPARSE_FLAG_MIXED 4 /* Assume options and args are mixed. */
#define ARGPARSE_FLAG_NOSTOP 8 /* Do not stop processing at "--". */
#define ARGPARSE_FLAG_ARG0 16 /* Do not skip the first arg. */
#define ARGPARSE_FLAG_ONEDASH 32 /* Allow long options with one dash. */
#define ARGPARSE_FLAG_NOVERSION 64 /* No output for "--version". */
#define ARGPARSE_FLAG_STOP_SEEN 256 /* Set to true if a "--" has been seen. */
/* Flags for each option (ARGPARSE_OPTS). The type code may be
ORed with the OPT flags. */
#define ARGPARSE_TYPE_NONE 0 /* Does not take an argument. */
#define ARGPARSE_TYPE_INT 1 /* Takes an int argument. */
#define ARGPARSE_TYPE_STRING 2 /* Takes a string argument. */
#define ARGPARSE_TYPE_LONG 3 /* Takes a long argument. */
#define ARGPARSE_TYPE_ULONG 4 /* Takes an unsigned long argument. */
#define ARGPARSE_OPT_OPTIONAL (1<<3) /* Argument is optional. */
#define ARGPARSE_OPT_PREFIX (1<<4) /* Allow 0x etc. prefixed values. */
#define ARGPARSE_OPT_IGNORE (1<<6) /* Ignore command or option. */
#define ARGPARSE_OPT_COMMAND (1<<7) /* The argument is a command. */
#define ARGPARSE_TYPE_MASK 7 /* Mask for the type values (internal). */
/* A set of macros to make option definitions easier to read. */
#define ARGPARSE_x(s,l,t,f,d) \
{ (s), (l), ARGPARSE_TYPE_ ## t | (f), (d) }
#define ARGPARSE_s(s,l,t,d) \
{ (s), (l), ARGPARSE_TYPE_ ## t, (d) }
#define ARGPARSE_s_n(s,l,d) \
{ (s), (l), ARGPARSE_TYPE_NONE, (d) }
#define ARGPARSE_s_i(s,l,d) \
{ (s), (l), ARGPARSE_TYPE_INT, (d) }
#define ARGPARSE_s_s(s,l,d) \
{ (s), (l), ARGPARSE_TYPE_STRING, (d) }
#define ARGPARSE_s_l(s,l,d) \
{ (s), (l), ARGPARSE_TYPE_LONG, (d) }
#define ARGPARSE_s_u(s,l,d) \
{ (s), (l), ARGPARSE_TYPE_ULONG, (d) }
#define ARGPARSE_o(s,l,t,d) \
{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_o_n(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_o_i(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_o_s(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_o_l(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_o_u(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_OPTIONAL), (d) }
#define ARGPARSE_p(s,l,t,d) \
{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_p_n(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_p_i(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_p_s(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_p_l(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_p_u(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op(s,l,t,d) \
{ (s), (l), (ARGPARSE_TYPE_ ## t \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op_n(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_NONE \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op_i(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_INT \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op_s(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_STRING \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op_l(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_LONG \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_op_u(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_ULONG \
| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
#define ARGPARSE_c(s,l,d) \
{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_COMMAND), (d) }
#define ARGPARSE_ignore(s,l) \
{ (s), (l), (ARGPARSE_OPT_IGNORE), "@" }
#define ARGPARSE_group(s,d) \
{ (s), NULL, 0, (d) }
#define ARGPARSE_end() { 0, NULL, 0, NULL }
/* Other constants. */
#define ARGPARSE_PRINT_WARNING 1
#define ARGPARSE_PRINT_ERROR 2
/* Error values. */
#define ARGPARSE_IS_ARG (-1)
#define ARGPARSE_INVALID_OPTION (-2)
#define ARGPARSE_MISSING_ARG (-3)
#define ARGPARSE_KEYWORD_TOO_LONG (-4)
#define ARGPARSE_READ_ERROR (-5)
#define ARGPARSE_UNEXPECTED_ARG (-6)
#define ARGPARSE_INVALID_COMMAND (-7)
#define ARGPARSE_AMBIGUOUS_OPTION (-8)
#define ARGPARSE_AMBIGUOUS_COMMAND (-9)
#define ARGPARSE_INVALID_ALIAS (-10)
#define ARGPARSE_OUT_OF_CORE (-11)
#define ARGPARSE_INVALID_ARG (-12)
int arg_parse (ARGPARSE_ARGS *arg, ARGPARSE_OPTS *opts);
int optfile_parse (FILE *fp, const char *filename, unsigned *lineno,
ARGPARSE_ARGS *arg, ARGPARSE_OPTS *opts);
void usage (int level);
const char *strusage (int level);
void set_strusage (const char *(*f)( int ));
void argparse_register_outfnc (int (*fnc)(int, const char *));
#endif /*LIBJNLIB_ARGPARSE_H*/

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/* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#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 */

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/* password-cache.c - Password cache support.
Copyright (C) 2015 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 <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_LIBSECRET
# include <libsecret/secret.h>
#endif
#include "password-cache.h"
#include "memory.h"
#ifdef HAVE_LIBSECRET
static const SecretSchema *
gpg_schema (void)
{
static const SecretSchema the_schema = {
"org.gnupg.Passphrase", SECRET_SCHEMA_NONE,
{
{ "stored-by", SECRET_SCHEMA_ATTRIBUTE_STRING },
{ "keygrip", SECRET_SCHEMA_ATTRIBUTE_STRING },
{ "NULL", 0 },
}
};
return &the_schema;
}
static char *
keygrip_to_label (const char *keygrip)
{
char const prefix[] = "GnuPG: ";
char *label;
label = malloc (sizeof (prefix) + strlen (keygrip));
if (label)
{
memcpy (label, prefix, sizeof (prefix) - 1);
strcpy (&label[sizeof (prefix) - 1], keygrip);
}
return label;
}
#endif
void
password_cache_save (const char *keygrip, const char *password)
{
#ifdef HAVE_LIBSECRET
char *label;
GError *error = NULL;
if (! *keygrip)
return;
label = keygrip_to_label (keygrip);
if (! label)
return;
if (! secret_password_store_sync (gpg_schema (),
SECRET_COLLECTION_DEFAULT,
label, password, NULL, &error,
"stored-by", "GnuPG Pinentry",
"keygrip", keygrip, NULL))
{
printf("Failed to cache password for key %s with secret service: %s\n",
keygrip, error->message);
g_error_free (error);
}
free (label);
#else
return;
#endif
}
char *
password_cache_lookup (const char *keygrip)
{
#ifdef HAVE_LIBSECRET
GError *error = NULL;
char *password;
char *password2;
if (! *keygrip)
return NULL;
password = secret_password_lookup_nonpageable_sync
(gpg_schema (), NULL, &error,
"keygrip", keygrip, NULL);
if (error != NULL)
{
printf("Failed to lookup password for key %s with secret service: %s\n",
keygrip, error->message);
g_error_free (error);
return NULL;
}
if (! password)
/* The password for this key is not cached. Just return NULL. */
return NULL;
/* The password needs to be returned in secmem allocated memory. */
password2 = secmem_malloc (strlen (password) + 1);
if (password2)
strcpy(password2, password);
else
printf("secmem_malloc failed: can't copy password!\n");
secret_password_free (password);
return password2;
#else
return NULL;
#endif
}
/* Try and remove the cached password for key grip. Returns -1 on
error, 0 if the key is not found and 1 if the password was
removed. */
int
password_cache_clear (const char *keygrip)
{
#ifdef HAVE_LIBSECRET
GError *error = NULL;
int removed = secret_password_clear_sync (gpg_schema (), NULL, &error,
"keygrip", keygrip, NULL);
if (error != NULL)
{
printf("Failed to clear password for key %s with secret service: %s\n",
keygrip, error->message);
g_debug("%s", error->message);
g_error_free (error);
return -1;
}
if (removed)
return 1;
return 0;
#else
return -1;
#endif
}

29
pinentry-dmenu/pinentry/password-cache.h Normal file
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/* password-cache.h - Password cache support interfaces.
Copyright (C) 2015 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 <http://www.gnu.org/licenses/>.
*/
#ifndef PASSWORD_CACHE_H
#define PASSWORD_CACHE_H
void password_cache_save (const char *key_grip, const char *password);
char *password_cache_lookup (const char *key_grip);
int password_cache_clear (const char *keygrip);
#endif

1308
pinentry-dmenu/pinentry/pinentry.c Normal file
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280
pinentry-dmenu/pinentry/pinentry.h Normal file
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/* pinentry.h - The interface for the PIN entry support library.
Copyright (C) 2002, 2003, 2010, 2015 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 <http://www.gnu.org/licenses/>.
*/
#ifndef PINENTRY_H
#define PINENTRY_H
#ifdef __cplusplus
extern "C" {
#if 0
}
#endif
#endif
typedef enum {
PINENTRY_COLOR_NONE, PINENTRY_COLOR_DEFAULT,
PINENTRY_COLOR_BLACK, PINENTRY_COLOR_RED,
PINENTRY_COLOR_GREEN, PINENTRY_COLOR_YELLOW,
PINENTRY_COLOR_BLUE, PINENTRY_COLOR_MAGENTA,
PINENTRY_COLOR_CYAN, PINENTRY_COLOR_WHITE
} pinentry_color_t;
struct pinentry
{
/* The window title, or NULL. (Assuan: "SETTITLE TITLE".) */
char *title;
/* The description to display, or NULL. (Assuan: "SETDESC
DESC".) */
char *description;
/* The error message to display, or NULL. (Assuan: "SETERROR
MESSAGE".) */
char *error;
/* The prompt to display, or NULL. (Assuan: "SETPROMPT
prompt".) */
char *prompt;
/* The OK button text to display, or NULL. (Assuan: "SETOK
OK".) */
char *ok;
/* The Not-OK button text to display, or NULL. This is the text for
the alternative option shown by the third button. (Assuan:
"SETNOTOK NOTOK".) */
char *notok;
/* The Cancel button text to display, or NULL. (Assuan: "SETCANCEL
CANCEL".) */
char *cancel;
/* The buffer to store the secret into. */
char *pin;
/* The length of the buffer. */
int pin_len;
/* Whether the pin was read from an external cache (1) or entered by
the user (0). */
int pin_from_cache;
/* The name of the X display to use if X is available and supported.
(Assuan: "OPTION display DISPLAY".) */
char *display;
/* The name of the terminal node to open if X not available or
supported. (Assuan: "OPTION ttyname TTYNAME".) */
char *ttyname;
/* The type of the terminal. (Assuan: "OPTION ttytype TTYTYPE".) */
char *ttytype;
/* The LC_CTYPE value for the terminal. (Assuan: "OPTION lc-ctype
LC_CTYPE".) */
char *lc_ctype;
/* The LC_MESSAGES value for the terminal. (Assuan: "OPTION
lc-messages LC_MESSAGES".) */
char *lc_messages;
/* True if debug mode is requested. */
int debug;
/* The number of seconds before giving up while waiting for user input. */
int timeout;
/* True if caller should grab the keyboard. (Assuan: "OPTION grab"
or "OPTION no-grab".) */
int grab;
/* The window ID of the parent window over which the pinentry window
should be displayed. (Assuan: "OPTION parent-wid WID".) */
int parent_wid;
/* The name of an optional file which will be touched after a curses
entry has been displayed. (Assuan: "OPTION touch-file
FILENAME".) */
char *touch_file;
/* The frontend should set this to -1 if the user canceled the
request, and to the length of the PIN stored in pin
otherwise. */
int result;
/* The frontend should set this if the NOTOK button was pressed. */
int canceled;
/* The frontend should set this to true if an error with the local
conversion occured. */
int locale_err;
/* The frontend should set this to a gpg-error so that commands are
able to return specific error codes. This is an ugly hack due to
the fact that pinentry_cmd_handler_t returns the length of the
passphrase or a negative error code. */
int specific_err;
/* The frontend should set this to true if the window close button
has been used. This flag is used in addition to a regular return
value. */
int close_button;
/* The caller should set this to true if only one button is
required. This is useful for notification dialogs where only a
dismiss button is required. */
int one_button;
/* If true a second prompt for the passphrase is shown and the user
is expected to enter the same passphrase again. Pinentry checks
that both match. (Assuan: "SETREPEAT".) */
char *repeat_passphrase;
/* The string to show if a repeated passphrase does not match.
(Assuan: "SETREPEATERROR ERROR".) */
char *repeat_error_string;
/* Set to true if the passphrase has been entered a second time and
matches the first passphrase. */
int repeat_okay;
/* If this is not NULL, a passphrase quality indicator is shown.
There will also be an inquiry back to the caller to get an
indication of the quality for the passphrase entered so far. The
string is used as a label for the quality bar. (Assuan:
"SETQUALITYBAR LABEL".) */
char *quality_bar;
/* The tooltip to be show for the qualitybar. Malloced or NULL.
(Assuan: "SETQUALITYBAR_TT TOOLTIP".) */
char *quality_bar_tt;
/* For the curses pinentry, the color of error messages. */
pinentry_color_t color_fg;
int color_fg_bright;
pinentry_color_t color_bg;
pinentry_color_t color_so;
int color_so_bright;
/* Malloced and i18ned default strings or NULL. These strings may
include an underscore character to indicate an accelerator key.
A double underscore represents a plain one. */
/* (Assuan: "OPTION default-ok OK"). */
char *default_ok;
/* (Assuan: "OPTION default-cancel CANCEL"). */
char *default_cancel;
/* (Assuan: "OPTION default-prompt PROMPT"). */
char *default_prompt;
/* (Assuan: "OPTION default-pwmngr
SAVE_PASSWORD_WITH_PASSWORD_MANAGER?"). */
char *default_pwmngr;
/* Whether we are allowed to read the password from an external
cache. (Assuan: "OPTION allow-external-password-cache") */
int allow_external_password_cache;
/* We only try the cache once. */
int tried_password_cache;
/* A stable identifier for the key. (Assuan: "SETKEYINFO
KEYINFO".) */
char *keyinfo;
/* Whether we may cache the password (according to the user). */
int may_cache_password;
/* NOTE: If you add any additional fields to this structure, be sure
to update the initializer in pinentry/pinentry.c!!! */
/* For the quality indicator we need to do an inquiry. Thus we need
to save the assuan ctx. */
void *ctx_assuan;
};
typedef struct pinentry *pinentry_t;
/* The pinentry command handler type processes the pinentry request
PIN. If PIN->pin is zero, request a confirmation, otherwise a PIN
entry. On confirmation, the function should return TRUE if
confirmed, and FALSE otherwise. On PIN entry, the function should
return -1 if an error occured or the user cancelled the operation
and 1 otherwise. */
typedef int (*pinentry_cmd_handler_t) (pinentry_t pin);
/* Start the pinentry event loop. The program will start to process
Assuan commands until it is finished or an error occurs. If an
error occurs, -1 is returned and errno indicates the type of an
error. Otherwise, 0 is returned. */
int pinentry_loop (void);
/* The same as above but allows to specify the i/o descriptors.
* infd and outfd will be duplicated in this function so the caller
* still has to close them if necessary.
*/
int pinentry_loop2 (int infd, int outfd);
/* Convert the UTF-8 encoded string TEXT to the encoding given in
LC_CTYPE. Return NULL on error. */
char *pinentry_utf8_to_local (const char *lc_ctype, const char *text);
/* Convert TEXT which is encoded according to LC_CTYPE to UTF-8. With
SECURE set to true, use secure memory for the returned buffer.
Return NULL on error. */
char *pinentry_local_to_utf8 (char *lc_ctype, char *text, int secure);
/* Run a quality inquiry for PASSPHRASE of LENGTH. */
int pinentry_inq_quality (pinentry_t pin,
const char *passphrase, size_t length);
/* Try to make room for at least LEN bytes for the pin in the pinentry
PIN. Returns new buffer on success and 0 on failure. */
char *pinentry_setbufferlen (pinentry_t pin, int len);
/* Use the buffer at BUFFER for PIN->PIN. BUFFER must be NULL or
allocated using secmem_alloc. LEN is the size of the buffer. If
it is unknown, but BUFFER is a NUL terminated string, you pass 0 to
just use strlen(buffer)+1. */
void pinentry_setbuffer_use (pinentry_t pin, char *buffer, int len);
/* Initialize the secure memory subsystem, drop privileges and
return. Must be called early. */
void pinentry_init (const char *pgmname);
/* Return true if either DISPLAY is set or ARGV contains the string
"--display". */
int pinentry_have_display (int argc, char **argv);
/* Parse the command line options. May exit the program if only help
or version output is requested. */
void pinentry_parse_opts (int argc, char *argv[]);
/* The caller must define this variable to process assuan commands. */
extern pinentry_cmd_handler_t pinentry_cmd_handler;
#ifdef HAVE_W32_SYSTEM
/* Windows declares sleep as obsolete, but provides a definition for
_sleep but non for the still existing sleep. */
#define sleep(a) _sleep ((a))
#endif /*HAVE_W32_SYSTEM*/
#if 0
{
#endif
#ifdef __cplusplus
}
#endif
#endif /* PINENTRY_H */

91
pinentry-dmenu/pinentry/secmem++.h Normal file
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/* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#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__ */

3
pinentry-dmenu/pinentry/secmem-util.h Normal file
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/* This file exists because "util.h" is such a generic name that it is
likely to clash with other such files. */
#include "util.h"

460
pinentry-dmenu/pinentry/secmem.c Normal file
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/* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <stdarg.h>
#include <unistd.h>
#if defined(HAVE_MLOCK) || defined(HAVE_MMAP)
# include <sys/mman.h>
# include <sys/types.h>
# include <fcntl.h>
# ifdef USE_CAPABILITIES
# include <sys/capability.h>
# endif
#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_TYPEDEF
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 */
static int pool_is_mmapped;
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(USE_CAPABILITIES) && defined(HAVE_MLOCK)
int err;
cap_set_proc( cap_from_text("cap_ipc_lock+ep") );
err = mlock( p, n );
if( err && errno )
err = errno;
cap_set_proc( cap_from_text("cap_ipc_lock+p") );
if( err ) {
if( errno != EPERM
#ifdef EAGAIN /* OpenBSD returns this */
&& errno != EAGAIN
#endif
)
log_error("can't lock memory: %s\n", strerror(err));
show_warning = 1;
}
#elif defined(HAVE_MLOCK)
uid_t uid;
int err;
uid = getuid();
#ifdef HAVE_BROKEN_MLOCK
if( uid ) {
errno = EPERM;
err = errno;
}
else {
err = mlock( p, n );
if( err && errno )
err = errno;
}
#else
err = mlock( p, n );
if( err && errno )
err = errno;
#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(err));
show_warning = 1;
}
#else
log_info("Please note that you don't have secure memory on this system\n");
#endif
}
static void
init_pool( size_t n)
{
size_t pgsize;
poolsize = n;
if( disable_secmem )
log_bug("secure memory is disabled");
#ifdef HAVE_GETPAGESIZE
pgsize = getpagesize();
#else
pgsize = 4096;
#endif
#if HAVE_MMAP
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 ) {
#ifdef USE_CAPABILITIES
/* drop all capabilities */
cap_set_proc( cap_from_text("all-eip") );
#elif !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;
}

150
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/* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#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
#if 0 /* Not used. */
/* lower privileges to the real user's */
void
lower_privs()
{
if (!uid_set)
init_uids();
if (real_uid != file_uid) {
#ifdef HAVE_SETEUID
if (seteuid(real_uid) < 0) {
perror("lowering privileges failed");
exit(EXIT_FAILURE);
}
#else
fprintf(stderr, _("Warning: running q-agent setuid on this system is dangerous\n"));
#endif /* HAVE_SETEUID */
}
}
#endif /* if 0 */
#if 0 /* Not used. */
/* raise privileges to the effective user's */
void
raise_privs()
{
assert(real_uid >= 0); /* lower_privs() must be called before this */
#ifdef HAVE_SETEUID
if (real_uid != file_uid && seteuid(file_uid) < 0) {
perror("Warning: raising privileges failed");
}
#endif /* HAVE_SETEUID */
}
#endif /* if 0 */
/* 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
}

66
pinentry-dmenu/pinentry/util.h Normal file
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/* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _UTIL_H
#define _UTIL_H
#include <sys/types.h>
#ifndef HAVE_BYTE_TYPEDEF
# undef byte
# ifdef __riscos__
/* Norcroft treats char == unsigned char but char* != unsigned char* */
typedef char byte;
# else
typedef unsigned char byte;
# endif
# define HAVE_BYTE_TYPEDEF
#endif
#ifndef HAVE_ULONG_TYPEDEF
# undef ulong
typedef unsigned long ulong;
# define HAVE_ULONG_TYPEDEF
#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