diff --git a/common/asshelp.c b/common/asshelp.c
index 5209ea6cf..84bc546e2 100644
--- a/common/asshelp.c
+++ b/common/asshelp.c
@@ -1,700 +1,654 @@
/* asshelp.c - Helper functions for Assuan
* Copyright (C) 2002, 2004, 2007, 2009, 2010 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 .
*/
#include
#include
#include
#include
#include
#include
#ifdef HAVE_LOCALE_H
#include
#endif
#include "i18n.h"
#include "util.h"
#include "exechelp.h"
#include "sysutils.h"
#include "status.h"
#include "membuf.h"
#include "asshelp.h"
/* The type we use for lock_agent_spawning. */
#ifdef HAVE_W32_SYSTEM
# define lock_spawn_t HANDLE
#else
# define lock_spawn_t dotlock_t
#endif
/* The time we wait until the agent or the dirmngr are ready for
operation after we started them before giving up. */
#ifdef HAVE_W32CE_SYSTEM
# define SECS_TO_WAIT_FOR_AGENT 30
# define SECS_TO_WAIT_FOR_DIRMNGR 30
#else
# define SECS_TO_WAIT_FOR_AGENT 5
# define SECS_TO_WAIT_FOR_DIRMNGR 5
#endif
/* A bitfield that specifies the assuan categories to log. This is
identical to the default log handler of libassuan. We need to do
it ourselves because we use a custom log handler and want to use
the same assuan variables to select the categories to log. */
static int log_cats;
#define TEST_LOG_CAT(x) (!! (log_cats & (1 << (x - 1))))
/* The assuan log monitor used to temporary inhibit log messages from
* assuan. */
static int (*my_log_monitor) (assuan_context_t ctx,
unsigned int cat,
const char *msg);
static int
my_libassuan_log_handler (assuan_context_t ctx, void *hook,
unsigned int cat, const char *msg)
{
unsigned int dbgval;
if (! TEST_LOG_CAT (cat))
return 0;
dbgval = hook? *(unsigned int*)hook : 0;
if (!(dbgval & 1024))
return 0; /* Assuan debugging is not enabled. */
if (ctx && my_log_monitor && !my_log_monitor (ctx, cat, msg))
return 0; /* Temporary disabled. */
if (msg)
log_string (GPGRT_LOGLVL_DEBUG, msg);
return 1;
}
/* Setup libassuan to use our own logging functions. Should be used
early at startup. */
void
setup_libassuan_logging (unsigned int *debug_var_address,
int (*log_monitor)(assuan_context_t ctx,
unsigned int cat,
const char *msg))
{
char *flagstr;
flagstr = getenv ("ASSUAN_DEBUG");
if (flagstr)
log_cats = atoi (flagstr);
else /* Default to log the control channel. */
log_cats = (1 << (ASSUAN_LOG_CONTROL - 1));
my_log_monitor = log_monitor;
assuan_set_log_cb (my_libassuan_log_handler, debug_var_address);
}
/* Change the Libassuan log categories to those given by NEWCATS.
NEWCATS is 0 the default category of ASSUAN_LOG_CONTROL is
selected. Note, that setup_libassuan_logging overrides the values
given here. */
void
set_libassuan_log_cats (unsigned int newcats)
{
if (newcats)
log_cats = newcats;
else /* Default to log the control channel. */
log_cats = (1 << (ASSUAN_LOG_CONTROL - 1));
}
static gpg_error_t
send_one_option (assuan_context_t ctx, gpg_err_source_t errsource,
const char *name, const char *value, int use_putenv)
{
gpg_error_t err;
char *optstr;
(void)errsource;
if (!value || !*value)
err = 0; /* Avoid sending empty strings. */
else if (asprintf (&optstr, "OPTION %s%s=%s",
use_putenv? "putenv=":"", name, value) < 0)
err = gpg_error_from_syserror ();
else
{
err = assuan_transact (ctx, optstr, NULL, NULL, NULL, NULL, NULL, NULL);
xfree (optstr);
}
return err;
}
/* Send the assuan commands pertaining to the pinentry environment. The
OPT_* arguments are optional and may be used to override the
defaults taken from the current locale. */
gpg_error_t
send_pinentry_environment (assuan_context_t ctx,
gpg_err_source_t errsource,
const char *opt_lc_ctype,
const char *opt_lc_messages,
session_env_t session_env)
{
gpg_error_t err = 0;
#if defined(HAVE_SETLOCALE)
char *old_lc = NULL;
#endif
char *dft_lc = NULL;
const char *dft_ttyname;
int iterator;
const char *name, *assname, *value;
int is_default;
iterator = 0;
while ((name = session_env_list_stdenvnames (&iterator, &assname)))
{
value = session_env_getenv_or_default (session_env, name, NULL);
if (!value)
continue;
if (assname)
err = send_one_option (ctx, errsource, assname, value, 0);
else
{
err = send_one_option (ctx, errsource, name, value, 1);
if (gpg_err_code (err) == GPG_ERR_UNKNOWN_OPTION)
err = 0; /* Server too old; can't pass the new envvars. */
}
if (err)
return err;
}
dft_ttyname = session_env_getenv_or_default (session_env, "GPG_TTY",
&is_default);
if (dft_ttyname && !is_default)
dft_ttyname = NULL; /* We need the default value. */
/* Send the value for LC_CTYPE. */
#if defined(HAVE_SETLOCALE) && defined(LC_CTYPE)
old_lc = setlocale (LC_CTYPE, NULL);
if (old_lc)
{
old_lc = xtrystrdup (old_lc);
if (!old_lc)
return gpg_error_from_syserror ();
}
dft_lc = setlocale (LC_CTYPE, "");
#endif
if (opt_lc_ctype || (dft_ttyname && dft_lc))
{
err = send_one_option (ctx, errsource, "lc-ctype",
opt_lc_ctype ? opt_lc_ctype : dft_lc, 0);
}
#if defined(HAVE_SETLOCALE) && defined(LC_CTYPE)
if (old_lc)
{
setlocale (LC_CTYPE, old_lc);
xfree (old_lc);
}
#endif
if (err)
return err;
/* Send the value for LC_MESSAGES. */
#if defined(HAVE_SETLOCALE) && defined(LC_MESSAGES)
old_lc = setlocale (LC_MESSAGES, NULL);
if (old_lc)
{
old_lc = xtrystrdup (old_lc);
if (!old_lc)
return gpg_error_from_syserror ();
}
dft_lc = setlocale (LC_MESSAGES, "");
#endif
if (opt_lc_messages || (dft_ttyname && dft_lc))
{
err = send_one_option (ctx, errsource, "lc-messages",
opt_lc_messages ? opt_lc_messages : dft_lc, 0);
}
#if defined(HAVE_SETLOCALE) && defined(LC_MESSAGES)
if (old_lc)
{
setlocale (LC_MESSAGES, old_lc);
xfree (old_lc);
}
#endif
if (err)
return err;
return 0;
}
/* Lock a spawning process. The caller needs to provide the address
of a variable to store the lock information and the name or the
process. */
static gpg_error_t
lock_spawning (lock_spawn_t *lock, const char *homedir, const char *name,
int verbose)
{
char *fname;
(void)verbose;
*lock = NULL;
fname = make_absfilename_try
(homedir,
!strcmp (name, "agent")? "gnupg_spawn_agent_sentinel":
!strcmp (name, "dirmngr")? "gnupg_spawn_dirmngr_sentinel":
/* */ "gnupg_spawn_unknown_sentinel",
NULL);
if (!fname)
return gpg_error_from_syserror ();
*lock = dotlock_create (fname, 0);
xfree (fname);
if (!*lock)
return gpg_error_from_syserror ();
/* FIXME: We should use a timeout of 5000 here - however
make_dotlock does not yet support values other than -1 and 0. */
if (dotlock_take (*lock, -1))
return gpg_error_from_syserror ();
return 0;
}
/* Unlock the spawning process. */
static void
unlock_spawning (lock_spawn_t *lock, const char *name)
{
if (*lock)
{
(void)name;
dotlock_destroy (*lock);
*lock = NULL;
}
}
/* Helper for start_new_gpg_agent and start_new_dirmngr.
* Values for WHICH are:
* 0 - Start gpg-agent
* 1 - Start dirmngr
* SECS give the number of seconds to wait. SOCKNAME is the name of
* the socket to connect. VERBOSE is the usual verbose flag. CTX is
* the assuan context. DID_SUCCESS_MSG will be set to 1 if a success
* messages has been printed.
*/
static gpg_error_t
wait_for_sock (int secs, int which, const char *sockname,
int verbose, assuan_context_t ctx, int *did_success_msg)
{
gpg_error_t err = 0;
int target_us = secs * 1000000;
int elapsed_us = 0;
/*
* 977us * 1024 = just a little more than 1s.
* so we will double this timeout 10 times in the first
* second, and then switch over to 1s checkins.
*/
int next_sleep_us = 977;
int lastalert = secs+1;
int secsleft;
while (elapsed_us < target_us)
{
if (verbose)
{
secsleft = (target_us - elapsed_us + 999999)/1000000;
/* log_clock ("left=%d last=%d targ=%d elap=%d next=%d\n", */
/* secsleft, lastalert, target_us, elapsed_us, */
/* next_sleep_us); */
if (secsleft < lastalert)
{
log_info (which == 1?
_("waiting for the dirmngr to come up ... (%ds)\n"):
_("waiting for the agent to come up ... (%ds)\n"),
secsleft);
lastalert = secsleft;
}
}
gnupg_usleep (next_sleep_us);
elapsed_us += next_sleep_us;
err = assuan_socket_connect (ctx, sockname, 0, 0);
if (!err)
{
if (verbose)
{
log_info (which == 1?
_("connection to the dirmngr established\n"):
_("connection to the agent established\n"));
*did_success_msg = 1;
}
break;
}
next_sleep_us *= 2;
if (next_sleep_us > 1000000)
next_sleep_us = 1000000;
}
return err;
}
-/* Try to connect to the agent via socket or start it if it is not
- running and AUTOSTART is set. Handle the server's initial
- greeting. Returns a new assuan context at R_CTX or an error
- code. */
-gpg_error_t
-start_new_gpg_agent (assuan_context_t *r_ctx,
- gpg_err_source_t errsource,
- const char *agent_program,
- const char *opt_lc_ctype,
- const char *opt_lc_messages,
- session_env_t session_env,
- int autostart, int verbose, int debug,
- gpg_error_t (*status_cb)(ctrl_t, int, ...),
- ctrl_t status_cb_arg)
+/* Try to connect to a new service via socket or start it if it is not
+ * running and AUTOSTART is set. Handle the server's initial
+ * greeting. Returns a new assuan context at R_CTX or an error code.
+ * MODULE_NAME_ID is one of:
+ * GNUPG_MODULE_NAME_AGENT
+ * GNUPG_MODULE_NAME_DIRMNGR
+ */
+static gpg_error_t
+start_new_service (assuan_context_t *r_ctx,
+ int module_name_id,
+ gpg_err_source_t errsource,
+ const char *program_name,
+ const char *opt_lc_ctype,
+ const char *opt_lc_messages,
+ session_env_t session_env,
+ int autostart, int verbose, int debug,
+ gpg_error_t (*status_cb)(ctrl_t, int, ...),
+ ctrl_t status_cb_arg)
{
gpg_error_t err;
assuan_context_t ctx;
int did_success_msg = 0;
char *sockname;
+ const char *printed_name;
+ const char *lock_name;
+ const char *status_start_line;
+ int no_service_err;
+ int seconds_to_wait;
const char *argv[6];
*r_ctx = NULL;
err = assuan_new (&ctx);
if (err)
{
log_error ("error allocating assuan context: %s\n", gpg_strerror (err));
return err;
}
- sockname = make_filename_try (gnupg_socketdir (), GPG_AGENT_SOCK_NAME, NULL);
- if (!sockname)
+ switch (module_name_id)
{
- err = gpg_err_make (errsource, gpg_err_code_from_syserror ());
+ case GNUPG_MODULE_NAME_AGENT:
+ sockname = make_filename (gnupg_socketdir (), GPG_AGENT_SOCK_NAME, NULL);
+ lock_name = "agent";
+ printed_name = "gpg-agent";
+ status_start_line = "starting_agent ? 0 0";
+ no_service_err = GPG_ERR_NO_AGENT;
+ seconds_to_wait = SECS_TO_WAIT_FOR_AGENT;
+ break;
+ case GNUPG_MODULE_NAME_DIRMNGR:
+ sockname = make_filename (gnupg_socketdir (), DIRMNGR_SOCK_NAME, NULL);
+ lock_name = "dirmngr";
+ printed_name = "dirmngr";
+ status_start_line = "starting_dirmngr ? 0 0";
+ no_service_err = GPG_ERR_NO_DIRMNGR;
+ seconds_to_wait = SECS_TO_WAIT_FOR_DIRMNGR;
+ break;
+ default:
+ err = gpg_error (GPG_ERR_INV_ARG);
assuan_release (ctx);
return err;
}
err = assuan_socket_connect (ctx, sockname, 0, 0);
if (err && autostart)
{
char *abs_homedir;
lock_spawn_t lock;
char *program = NULL;
const char *program_arg = NULL;
char *p;
const char *s;
int i;
/* With no success start a new server. */
- if (!agent_program || !*agent_program)
- agent_program = gnupg_module_name (GNUPG_MODULE_NAME_AGENT);
- else if ((s=strchr (agent_program, '|')) && s[1] == '-' && s[2]=='-')
+ if (!program_name || !*program_name)
+ program_name = gnupg_module_name (module_name_id);
+ else if ((s=strchr (program_name, '|')) && s[1] == '-' && s[2]=='-')
{
/* Hack to insert an additional option on the command line. */
- program = xtrystrdup (agent_program);
+ program = xtrystrdup (program_name);
if (!program)
{
gpg_error_t tmperr = gpg_err_make (errsource,
gpg_err_code_from_syserror ());
xfree (sockname);
assuan_release (ctx);
return tmperr;
}
p = strchr (program, '|');
*p++ = 0;
program_arg = p;
}
if (verbose)
- log_info (_("no running gpg-agent - starting '%s'\n"),
- agent_program);
+ log_info (_("no running %s - starting '%s'\n"),
+ printed_name, program_name);
if (status_cb)
- status_cb (status_cb_arg, STATUS_PROGRESS,
- "starting_agent ? 0 0", NULL);
+ status_cb (status_cb_arg, STATUS_PROGRESS, status_start_line, NULL);
- /* We better pass an absolute home directory to the agent just
- in case gpg-agent does not convert the passed name to an
- absolute one (which it should do). */
+ /* We better pass an absolute home directory to the service just
+ * in case the service does not convert the passed name to an
+ * absolute one (which it should do). */
abs_homedir = make_absfilename_try (gnupg_homedir (), NULL);
if (!abs_homedir)
{
gpg_error_t tmperr = gpg_err_make (errsource,
gpg_err_code_from_syserror ());
- log_error ("error building filename: %s\n",gpg_strerror (tmperr));
+ log_error ("error building filename: %s\n", gpg_strerror (tmperr));
xfree (sockname);
assuan_release (ctx);
xfree (program);
return tmperr;
}
if (fflush (NULL))
{
gpg_error_t tmperr = gpg_err_make (errsource,
gpg_err_code_from_syserror ());
- log_error ("error flushing pending output: %s\n",
- strerror (errno));
+ log_error ("error flushing pending output: %s\n", strerror (errno));
xfree (sockname);
assuan_release (ctx);
xfree (abs_homedir);
xfree (program);
return tmperr;
}
- /* If the agent has been configured for use with a standard
- socket, an environment variable is not required and thus
- we can safely start the agent here. */
i = 0;
argv[i++] = "--homedir";
argv[i++] = abs_homedir;
- argv[i++] = "--use-standard-socket";
+ if (module_name_id == GNUPG_MODULE_NAME_AGENT)
+ argv[i++] = "--use-standard-socket";
if (program_arg)
argv[i++] = program_arg;
argv[i++] = "--daemon";
argv[i++] = NULL;
- if (!(err = lock_spawning (&lock, gnupg_homedir (), "agent", verbose))
+ if (!(err = lock_spawning (&lock, gnupg_homedir (), lock_name, verbose))
&& assuan_socket_connect (ctx, sockname, 0, 0))
{
- err = gnupg_spawn_process_detached (program? program : agent_program,
+ err = gnupg_spawn_process_detached (program? program : program_name,
argv, NULL);
if (err)
- log_error ("failed to start agent '%s': %s\n",
- agent_program, gpg_strerror (err));
+ log_error ("failed to start %s '%s': %s\n",
+ printed_name, program? program : program_name,
+ gpg_strerror (err));
else
- err = wait_for_sock (SECS_TO_WAIT_FOR_AGENT, 0,
+ err = wait_for_sock (seconds_to_wait, 0,
sockname, verbose, ctx, &did_success_msg);
}
- unlock_spawning (&lock, "agent");
+ unlock_spawning (&lock, lock_name);
xfree (abs_homedir);
xfree (program);
}
xfree (sockname);
if (err)
{
if (autostart || gpg_err_code (err) != GPG_ERR_ASS_CONNECT_FAILED)
- log_error ("can't connect to the agent: %s\n", gpg_strerror (err));
+ log_error ("can't connect to the %s: %s\n",
+ printed_name, gpg_strerror (err));
assuan_release (ctx);
- return gpg_err_make (errsource, GPG_ERR_NO_AGENT);
+ return gpg_err_make (errsource, no_service_err);
}
if (debug && !did_success_msg)
- log_debug ("connection to the agent established\n");
+ log_debug ("connection to the %s established\n", printed_name);
- err = assuan_transact (ctx, "RESET",
- NULL, NULL, NULL, NULL, NULL, NULL);
- if (!err)
+ if (module_name_id == GNUPG_MODULE_NAME_AGENT)
+ err = assuan_transact (ctx, "RESET",
+ NULL, NULL, NULL, NULL, NULL, NULL);
+
+ if (!err
+ && module_name_id == GNUPG_MODULE_NAME_AGENT)
{
err = send_pinentry_environment (ctx, errsource,
opt_lc_ctype, opt_lc_messages,
session_env);
if (gpg_err_code (err) == GPG_ERR_FORBIDDEN
&& gpg_err_source (err) == GPG_ERR_SOURCE_GPGAGENT)
{
- /* Check whether we are in restricted mode. */
+ /* Check whether the agent is in restricted mode. */
if (!assuan_transact (ctx, "GETINFO restricted",
NULL, NULL, NULL, NULL, NULL, NULL))
{
if (verbose)
log_info (_("connection to the agent is in restricted mode\n"));
err = 0;
}
}
}
if (err)
{
assuan_release (ctx);
return err;
}
*r_ctx = ctx;
return 0;
}
+/* Try to connect tothe agent or start a new one. */
+gpg_error_t
+start_new_gpg_agent (assuan_context_t *r_ctx,
+ gpg_err_source_t errsource,
+ const char *agent_program,
+ const char *opt_lc_ctype,
+ const char *opt_lc_messages,
+ session_env_t session_env,
+ int autostart, int verbose, int debug,
+ gpg_error_t (*status_cb)(ctrl_t, int, ...),
+ ctrl_t status_cb_arg)
+{
+ return start_new_service (r_ctx, GNUPG_MODULE_NAME_AGENT,
+ errsource, agent_program,
+ opt_lc_ctype, opt_lc_messages, session_env,
+ autostart, verbose, debug,
+ status_cb, status_cb_arg);
+}
+
+
/* Try to connect to the dirmngr via a socket. On platforms
supporting it, start it up if needed and if AUTOSTART is true.
Returns a new assuan context at R_CTX or an error code. */
gpg_error_t
start_new_dirmngr (assuan_context_t *r_ctx,
gpg_err_source_t errsource,
const char *dirmngr_program,
- int autostart,
- int verbose, int debug,
+ int autostart, int verbose, int debug,
gpg_error_t (*status_cb)(ctrl_t, int, ...),
ctrl_t status_cb_arg)
{
- gpg_error_t err;
- assuan_context_t ctx;
- const char *sockname;
- int did_success_msg = 0;
-
- *r_ctx = NULL;
-
- err = assuan_new (&ctx);
- if (err)
- {
- log_error ("error allocating assuan context: %s\n", gpg_strerror (err));
- return err;
- }
-
- sockname = dirmngr_socket_name ();
- err = assuan_socket_connect (ctx, sockname, 0, 0);
-
#ifdef USE_DIRMNGR_AUTO_START
- if (err && autostart)
- {
- lock_spawn_t lock;
- const char *argv[4];
- char *abs_homedir;
-
- /* No connection: Try start a new Dirmngr. */
- if (!dirmngr_program || !*dirmngr_program)
- dirmngr_program = gnupg_module_name (GNUPG_MODULE_NAME_DIRMNGR);
-
- if (verbose)
- log_info (_("no running dirmngr - starting '%s'\n"),
- dirmngr_program);
-
- if (status_cb)
- status_cb (status_cb_arg, STATUS_PROGRESS,
- "starting_dirmngr ? 0 0", NULL);
-
- abs_homedir = make_absfilename (gnupg_homedir (), NULL);
- if (!abs_homedir)
- {
- gpg_error_t tmperr = gpg_err_make (errsource,
- gpg_err_code_from_syserror ());
- log_error ("error building filename: %s\n",gpg_strerror (tmperr));
- assuan_release (ctx);
- return tmperr;
- }
-
- if (fflush (NULL))
- {
- gpg_error_t tmperr = gpg_err_make (errsource,
- gpg_err_code_from_syserror ());
- log_error ("error flushing pending output: %s\n",
- strerror (errno));
- assuan_release (ctx);
- return tmperr;
- }
-
- argv[0] = "--daemon";
- /* Try starting the daemon. Versions of dirmngr < 2.1.15 do
- * this only if the home directory is given on the command line. */
- argv[1] = "--homedir";
- argv[2] = abs_homedir;
- argv[3] = NULL;
-
- if (!(err = lock_spawning (&lock, gnupg_homedir (), "dirmngr", verbose))
- && assuan_socket_connect (ctx, sockname, 0, 0))
- {
- err = gnupg_spawn_process_detached (dirmngr_program, argv, NULL);
- if (err)
- log_error ("failed to start the dirmngr '%s': %s\n",
- dirmngr_program, gpg_strerror (err));
- else
- err = wait_for_sock (SECS_TO_WAIT_FOR_DIRMNGR, 1,
- sockname, verbose, ctx, &did_success_msg);
- }
-
- unlock_spawning (&lock, "dirmngr");
- xfree (abs_homedir);
- }
-#else
- (void)dirmngr_program;
- (void)verbose;
- (void)status_cb;
- (void)status_cb_arg;
-#endif /*USE_DIRMNGR_AUTO_START*/
-
- if (err)
- {
- if (autostart || gpg_err_code (err) != GPG_ERR_ASS_CONNECT_FAILED)
- log_error ("connecting dirmngr at '%s' failed: %s\n",
- sockname, gpg_strerror (err));
- assuan_release (ctx);
- return gpg_err_make (errsource, GPG_ERR_NO_DIRMNGR);
- }
-
- if (debug && !did_success_msg)
- log_debug ("connection to the dirmngr established\n");
-
- *r_ctx = ctx;
- return 0;
+ autostart = 0;
+#endif
+ return start_new_service (r_ctx, GNUPG_MODULE_NAME_DIRMNGR,
+ errsource, dirmngr_program,
+ NULL, NULL, NULL,
+ autostart, verbose, debug,
+ status_cb, status_cb_arg);
}
/* Return the version of a server using "GETINFO version". On success
0 is returned and R_VERSION receives a malloced string with the
version which must be freed by the caller. On error NULL is stored
at R_VERSION and an error code returned. Mode is in general 0 but
certain values may be used to modify the used version command:
MODE == 0 = Use "GETINFO version"
MODE == 2 - Use "SCD GETINFO version"
*/
gpg_error_t
get_assuan_server_version (assuan_context_t ctx, int mode, char **r_version)
{
gpg_error_t err;
membuf_t data;
init_membuf (&data, 64);
err = assuan_transact (ctx,
mode == 2? "SCD GETINFO version"
/**/ : "GETINFO version",
put_membuf_cb, &data,
NULL, NULL, NULL, NULL);
if (err)
{
xfree (get_membuf (&data, NULL));
*r_version = NULL;
}
else
{
put_membuf (&data, "", 1);
*r_version = get_membuf (&data, NULL);
if (!*r_version)
err = gpg_error_from_syserror ();
}
return err;
}
diff --git a/common/homedir.c b/common/homedir.c
index e9e75d01e..9c680a57f 100644
--- a/common/homedir.c
+++ b/common/homedir.c
@@ -1,1162 +1,1173 @@
/* homedir.c - Setup the home directory.
* Copyright (C) 2004, 2006, 2007, 2010 Free Software Foundation, Inc.
* Copyright (C) 2013, 2016 Werner Koch
*
* 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 .
*/
#include
#include
#include
#include
#include
#ifdef HAVE_W32_SYSTEM
#include /* Due to the stupid mingw64 requirement to
include this header before windows.h which
is often implicitly included. */
#include
#ifndef CSIDL_APPDATA
#define CSIDL_APPDATA 0x001a
#endif
#ifndef CSIDL_LOCAL_APPDATA
#define CSIDL_LOCAL_APPDATA 0x001c
#endif
#ifndef CSIDL_COMMON_APPDATA
#define CSIDL_COMMON_APPDATA 0x0023
#endif
#ifndef CSIDL_FLAG_CREATE
#define CSIDL_FLAG_CREATE 0x8000
#endif
#endif /*HAVE_W32_SYSTEM*/
#ifdef HAVE_STAT
#include /* for stat() */
#endif
#include "util.h"
#include "sysutils.h"
#include "zb32.h"
/* The GnuPG homedir. This is only accessed by the functions
* gnupg_homedir and gnupg_set_homedir. Malloced. */
static char *the_gnupg_homedir;
/* Flag indicating that home directory is not the default one. */
static byte non_default_homedir;
#ifdef HAVE_W32_SYSTEM
/* A flag used to indicate that a control file for gpgconf has been
detected. Under Windows the presence of this file indicates a
portable installations and triggers several changes:
- The GNUGHOME directory is fixed relative to installation
directory. All other means to set the home directory are ignore.
- All registry variables will be ignored.
This flag is not used on Unix systems.
*/
static byte w32_portable_app;
#endif /*HAVE_W32_SYSTEM*/
#ifdef HAVE_W32_SYSTEM
/* This flag is true if this process' binary has been installed under
bin and not in the root directory as often used before GnuPG 2.1. */
static byte w32_bin_is_bin;
#endif /*HAVE_W32_SYSTEM*/
#ifdef HAVE_W32_SYSTEM
static const char *w32_rootdir (void);
#endif
#ifdef HAVE_W32_SYSTEM
static void
w32_try_mkdir (const char *dir)
{
#ifdef HAVE_W32CE_SYSTEM
wchar_t *wdir = utf8_to_wchar (dir);
if (wdir)
{
CreateDirectory (wdir, NULL);
xfree (wdir);
}
#else
CreateDirectory (dir, NULL);
#endif
}
#endif
/* This is a helper function to load a Windows function from either of
one DLLs. */
#ifdef HAVE_W32_SYSTEM
static HRESULT
w32_shgetfolderpath (HWND a, int b, HANDLE c, DWORD d, LPSTR e)
{
static int initialized;
static HRESULT (WINAPI * func)(HWND,int,HANDLE,DWORD,LPSTR);
if (!initialized)
{
static char *dllnames[] = { "shell32.dll", "shfolder.dll", NULL };
void *handle;
int i;
initialized = 1;
for (i=0, handle = NULL; !handle && dllnames[i]; i++)
{
handle = dlopen (dllnames[i], RTLD_LAZY);
if (handle)
{
func = dlsym (handle, "SHGetFolderPathA");
if (!func)
{
dlclose (handle);
handle = NULL;
}
}
}
}
if (func)
return func (a,b,c,d,e);
else
return -1;
}
#endif /*HAVE_W32_SYSTEM*/
/* Check whether DIR is the default homedir. */
static int
is_gnupg_default_homedir (const char *dir)
{
int result;
char *a = make_absfilename (dir, NULL);
char *b = make_absfilename (GNUPG_DEFAULT_HOMEDIR, NULL);
result = !compare_filenames (a, b);
xfree (b);
xfree (a);
return result;
}
/* Helper to remove trailing slashes from NEWDIR. Return a new
* allocated string if that has been done or NULL if there are no
* slashes to remove. Also inserts a missing slash after a Windows
* drive letter. */
static char *
copy_dir_with_fixup (const char *newdir)
{
char *result = NULL;
char *p;
if (!*newdir)
return NULL;
#ifdef HAVE_W32_SYSTEM
if (newdir[0] && newdir[1] == ':'
&& !(newdir[2] == '/' || newdir[2] == '\\'))
{
/* Drive letter with missing leading slash. */
p = result = xmalloc (strlen (newdir) + 1 + 1);
*p++ = newdir[0];
*p++ = newdir[1];
*p++ = '\\';
strcpy (p, newdir+2);
/* Remove trailing slashes. */
p = result + strlen (result) - 1;
while (p > result+2 && (*p == '/' || *p == '\\'))
*p-- = 0;
}
else if (newdir[strlen (newdir)-1] == '/'
|| newdir[strlen (newdir)-1] == '\\' )
{
result = xstrdup (newdir);
p = result + strlen (result) - 1;
while (p > result
&& (*p == '/' || *p == '\\')
&& (p-1 > result && p[-1] != ':')) /* We keep "c:/". */
*p-- = 0;
}
#else /*!HAVE_W32_SYSTEM*/
if (newdir[strlen (newdir)-1] == '/')
{
result = xstrdup (newdir);
p = result + strlen (result) - 1;
while (p > result && *p == '/')
*p-- = 0;
}
#endif /*!HAVE_W32_SYSTEM*/
return result;
}
/* Get the standard home directory. In general this function should
not be used as it does not consider a registry value (under W32) or
the GNUPGHOME environment variable. It is better to use
default_homedir(). */
const char *
standard_homedir (void)
{
#ifdef HAVE_W32_SYSTEM
static const char *dir;
if (!dir)
{
const char *rdir;
rdir = w32_rootdir ();
if (w32_portable_app)
{
dir = xstrconcat (rdir, DIRSEP_S "home", NULL);
}
else
{
char path[MAX_PATH];
/* It might be better to use LOCAL_APPDATA because this is
defined as "non roaming" and thus more likely to be kept
locally. For private keys this is desired. However,
given that many users copy private keys anyway forth and
back, using a system roaming services might be better
than to let them do it manually. A security conscious
user will anyway use the registry entry to have better
control. */
if (w32_shgetfolderpath (NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE,
NULL, 0, path) >= 0)
{
char *tmp = xmalloc (strlen (path) + 6 +1);
strcpy (stpcpy (tmp, path), "\\gnupg");
dir = tmp;
/* Try to create the directory if it does not yet exists. */
if (access (dir, F_OK))
w32_try_mkdir (dir);
}
else
dir = GNUPG_DEFAULT_HOMEDIR;
}
}
return dir;
#else/*!HAVE_W32_SYSTEM*/
return GNUPG_DEFAULT_HOMEDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
/* Set up the default home directory. The usual --homedir option
should be parsed later. */
const char *
default_homedir (void)
{
const char *dir;
#ifdef HAVE_W32_SYSTEM
/* For a portable application we only use the standard homedir. */
w32_rootdir ();
if (w32_portable_app)
return standard_homedir ();
#endif /*HAVE_W32_SYSTEM*/
dir = getenv ("GNUPGHOME");
#ifdef HAVE_W32_SYSTEM
if (!dir || !*dir)
{
static const char *saved_dir;
if (!saved_dir)
{
if (!dir || !*dir)
{
char *tmp, *p;
tmp = read_w32_registry_string (NULL,
GNUPG_REGISTRY_DIR,
"HomeDir");
if (tmp && !*tmp)
{
xfree (tmp);
tmp = NULL;
}
if (tmp)
{
/* Strip trailing backslashes. */
p = tmp + strlen (tmp) - 1;
while (p > tmp && *p == '\\')
*p-- = 0;
saved_dir = tmp;
}
}
if (!saved_dir)
saved_dir = standard_homedir ();
}
dir = saved_dir;
}
#endif /*HAVE_W32_SYSTEM*/
if (!dir || !*dir)
dir = GNUPG_DEFAULT_HOMEDIR;
else
{
char *p;
p = copy_dir_with_fixup (dir);
if (p)
dir = p;
if (!is_gnupg_default_homedir (dir))
non_default_homedir = 1;
}
return dir;
}
#ifdef HAVE_W32_SYSTEM
/* Check whether gpgconf is installed and if so read the gpgconf.ctl
file. */
static void
check_portable_app (const char *dir)
{
char *fname;
fname = xstrconcat (dir, DIRSEP_S "gpgconf.exe", NULL);
if (!access (fname, F_OK))
{
strcpy (fname + strlen (fname) - 3, "ctl");
if (!access (fname, F_OK))
{
/* gpgconf.ctl file found. Record this fact. */
w32_portable_app = 1;
{
unsigned int flags;
log_get_prefix (&flags);
log_set_prefix (NULL, (flags | GPGRT_LOG_NO_REGISTRY));
}
/* FIXME: We should read the file to detect special flags
and print a warning if we don't understand them */
}
}
xfree (fname);
}
/* Determine the root directory of the gnupg installation on Windows. */
static const char *
w32_rootdir (void)
{
static int got_dir;
static char dir[MAX_PATH+5];
if (!got_dir)
{
char *p;
int rc;
wchar_t wdir [MAX_PATH+5];
rc = GetModuleFileNameW (NULL, wdir, MAX_PATH);
if (rc && WideCharToMultiByte (CP_UTF8, 0, wdir, -1, dir, MAX_PATH-4,
NULL, NULL) < 0)
rc = 0;
if (!rc)
{
log_debug ("GetModuleFileName failed: %s\n", w32_strerror (-1));
*dir = 0;
}
got_dir = 1;
p = strrchr (dir, DIRSEP_C);
if (p)
{
*p = 0;
check_portable_app (dir);
/* If we are installed below "bin" we strip that and use
the top directory instead. */
p = strrchr (dir, DIRSEP_C);
if (p && !strcmp (p+1, "bin"))
{
*p = 0;
w32_bin_is_bin = 1;
}
}
if (!p)
{
log_debug ("bad filename '%s' returned for this process\n", dir);
*dir = 0;
}
}
if (*dir)
return dir;
/* Fallback to the hardwired value. */
return GNUPG_LIBEXECDIR;
}
static const char *
w32_commondir (void)
{
static char *dir;
if (!dir)
{
const char *rdir;
char path[MAX_PATH];
/* Make sure that w32_rootdir has been called so that we are
able to check the portable application flag. The common dir
is the identical to the rootdir. In that case there is also
no need to strdup its value. */
rdir = w32_rootdir ();
if (w32_portable_app)
return rdir;
if (w32_shgetfolderpath (NULL, CSIDL_COMMON_APPDATA,
NULL, 0, path) >= 0)
{
char *tmp = xmalloc (strlen (path) + 4 +1);
strcpy (stpcpy (tmp, path), "\\GNU");
dir = tmp;
/* No auto create of the directory. Either the installer or
the admin has to create these directories. */
}
else
{
/* Ooops: Not defined - probably an old Windows version.
Use the installation directory instead. */
dir = xstrdup (rdir);
}
}
return dir;
}
#endif /*HAVE_W32_SYSTEM*/
/* Change the homedir. Some care must be taken to set this early
* enough because previous calls to gnupg_homedir may else return a
* different string. */
void
gnupg_set_homedir (const char *newdir)
{
char *tmp = NULL;
if (!newdir || !*newdir)
newdir = default_homedir ();
else
{
tmp = copy_dir_with_fixup (newdir);
if (tmp)
newdir = tmp;
if (!is_gnupg_default_homedir (newdir))
non_default_homedir = 1;
}
xfree (the_gnupg_homedir);
the_gnupg_homedir = make_absfilename (newdir, NULL);;
xfree (tmp);
}
/* Return the homedir. The returned string is valid until another
* gnupg-set-homedir call. This is always an absolute directory name.
* The function replaces the former global var opt.homedir. */
const char *
gnupg_homedir (void)
{
/* If a homedir has not been set, set it to the default. */
if (!the_gnupg_homedir)
the_gnupg_homedir = make_absfilename (default_homedir (), NULL);
return the_gnupg_homedir;
}
/* Return whether the home dir is the default one. */
int
gnupg_default_homedir_p (void)
{
return !non_default_homedir;
}
/* Return the directory name used by daemons for their current working
* directory. */
const char *
gnupg_daemon_rootdir (void)
{
#ifdef HAVE_W32_SYSTEM
static char *name;
if (!name)
{
char path[MAX_PATH];
size_t n;
n = GetSystemDirectoryA (path, sizeof path);
if (!n || n >= sizeof path)
name = xstrdup ("/"); /* Error - use the curret top dir instead. */
else
name = xstrdup (path);
}
return name;
#else /*!HAVE_W32_SYSTEM*/
return "/";
#endif /*!HAVE_W32_SYSTEM*/
}
/* Helper for gnupg-socketdir. This is a global function, so that
* gpgconf can use it for its --create-socketdir command. If
* SKIP_CHECKS is set permission checks etc. are not done. The
* function always returns a malloced directory name and stores these
* bit flags at R_INFO:
*
* 1 := Internal error, stat failed, out of core, etc.
* 2 := No /run/user directory.
* 4 := Directory not owned by the user, not a directory
* or wrong permissions.
* 8 := Same as 4 but for the subdir.
* 16 := mkdir failed
* 32 := Non default homedir; checking subdir.
* 64 := Subdir does not exist.
* 128 := Using homedir as fallback.
*/
char *
_gnupg_socketdir_internal (int skip_checks, unsigned *r_info)
{
#if defined(HAVE_W32_SYSTEM) || !defined(HAVE_STAT)
char *name;
(void)skip_checks;
*r_info = 0;
name = xstrdup (gnupg_homedir ());
#else /* Unix and stat(2) available. */
static const char * const bases[] = {
#ifdef USE_RUN_GNUPG_USER_SOCKET
"/run/gnupg",
#endif
"/run",
#ifdef USE_RUN_GNUPG_USER_SOCKET
"/var/run/gnupg",
#endif
"/var/run",
NULL
};
int i;
struct stat sb;
char prefix[19 + 1 + 20 + 6 + 1];
const char *s;
char *name = NULL;
*r_info = 0;
/* First make sure that non_default_homedir can be set. */
gnupg_homedir ();
/* It has been suggested to first check XDG_RUNTIME_DIR envvar.
* However, the specs state that the lifetime of the directory MUST
* be bound to the user being logged in. Now GnuPG may also be run
* as a background process with no (desktop) user logged in. Thus
* we better don't do that. */
/* Check whether we have a /run/[gnupg/]user dir. */
for (i=0; bases[i]; i++)
{
snprintf (prefix, sizeof prefix, "%s/user/%u",
bases[i], (unsigned int)getuid ());
if (!stat (prefix, &sb) && S_ISDIR(sb.st_mode))
break;
}
if (!bases[i])
{
*r_info |= 2; /* No /run/user directory. */
goto leave;
}
if (sb.st_uid != getuid ())
{
*r_info |= 4; /* Not owned by the user. */
if (!skip_checks)
goto leave;
}
if (strlen (prefix) + 7 >= sizeof prefix)
{
*r_info |= 1; /* Ooops: Buffer too short to append "/gnupg". */
goto leave;
}
strcat (prefix, "/gnupg");
/* Check whether the gnupg sub directory has proper permissions. */
if (stat (prefix, &sb))
{
if (errno != ENOENT)
{
*r_info |= 1; /* stat failed. */
goto leave;
}
/* Try to create the directory and check again. */
if (gnupg_mkdir (prefix, "-rwx"))
{
*r_info |= 16; /* mkdir failed. */
goto leave;
}
if (stat (prefix, &sb))
{
*r_info |= 1; /* stat failed. */
goto leave;
}
}
/* Check that it is a directory, owned by the user, and only the
* user has permissions to use it. */
if (!S_ISDIR(sb.st_mode)
|| sb.st_uid != getuid ()
|| (sb.st_mode & (S_IRWXG|S_IRWXO)))
{
*r_info |= 4; /* Bad permissions or not a directory. */
if (!skip_checks)
goto leave;
}
/* If a non default homedir is used, we check whether an
* corresponding sub directory below the socket dir is available
* and use that. We hash the non default homedir to keep the new
* subdir short enough. */
if (non_default_homedir)
{
char sha1buf[20];
char *suffix;
*r_info |= 32; /* Testing subdir. */
s = gnupg_homedir ();
gcry_md_hash_buffer (GCRY_MD_SHA1, sha1buf, s, strlen (s));
suffix = zb32_encode (sha1buf, 8*15);
if (!suffix)
{
*r_info |= 1; /* Out of core etc. */
goto leave;
}
name = strconcat (prefix, "/d.", suffix, NULL);
xfree (suffix);
if (!name)
{
*r_info |= 1; /* Out of core etc. */
goto leave;
}
/* Stat that directory and check constraints.
* The command
* gpgconf --remove-socketdir
* can be used to remove that directory. */
if (stat (name, &sb))
{
if (errno != ENOENT)
*r_info |= 1; /* stat failed. */
else if (!skip_checks)
{
/* Try to create the directory and check again. */
if (gnupg_mkdir (name, "-rwx"))
*r_info |= 16; /* mkdir failed. */
else if (stat (prefix, &sb))
{
if (errno != ENOENT)
*r_info |= 1; /* stat failed. */
else
*r_info |= 64; /* Subdir does not exist. */
}
else
goto leave; /* Success! */
}
else
*r_info |= 64; /* Subdir does not exist. */
if (!skip_checks)
{
xfree (name);
name = NULL;
goto leave;
}
}
else if (!S_ISDIR(sb.st_mode)
|| sb.st_uid != getuid ()
|| (sb.st_mode & (S_IRWXG|S_IRWXO)))
{
*r_info |= 8; /* Bad permissions or subdir is not a directory. */
if (!skip_checks)
{
xfree (name);
name = NULL;
goto leave;
}
}
}
else
name = xstrdup (prefix);
leave:
/* If nothing works fall back to the homedir. */
if (!name)
{
*r_info |= 128; /* Fallback. */
name = xstrdup (gnupg_homedir ());
}
#endif /* Unix */
return name;
}
/*
* Return the name of the socket dir. That is the directory used for
* the IPC local sockets. This is an absolute directory name.
*/
const char *
gnupg_socketdir (void)
{
static char *name;
if (!name)
{
unsigned int dummy;
name = _gnupg_socketdir_internal (0, &dummy);
}
return name;
}
/* Return the name of the sysconfdir. This is a static string. This
function is required because under Windows we can't simply compile
it in. */
const char *
gnupg_sysconfdir (void)
{
#ifdef HAVE_W32_SYSTEM
static char *name;
if (!name)
{
const char *s1, *s2;
s1 = w32_commondir ();
s2 = DIRSEP_S "etc" DIRSEP_S "gnupg";
name = xmalloc (strlen (s1) + strlen (s2) + 1);
strcpy (stpcpy (name, s1), s2);
}
return name;
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_SYSCONFDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
const char *
gnupg_bindir (void)
{
#if defined (HAVE_W32CE_SYSTEM)
static char *name;
if (!name)
name = xstrconcat (w32_rootdir (), DIRSEP_S "bin", NULL);
return name;
#elif defined(HAVE_W32_SYSTEM)
const char *rdir;
rdir = w32_rootdir ();
if (w32_bin_is_bin)
{
static char *name;
if (!name)
name = xstrconcat (rdir, DIRSEP_S "bin", NULL);
return name;
}
else
return rdir;
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_BINDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
/* Return the name of the libexec directory. The name is allocated in
a static area on the first use. This function won't fail. */
const char *
gnupg_libexecdir (void)
{
#ifdef HAVE_W32_SYSTEM
return gnupg_bindir ();
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_LIBEXECDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
const char *
gnupg_libdir (void)
{
#ifdef HAVE_W32_SYSTEM
static char *name;
if (!name)
name = xstrconcat (w32_rootdir (), DIRSEP_S "lib" DIRSEP_S "gnupg", NULL);
return name;
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_LIBDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
const char *
gnupg_datadir (void)
{
#ifdef HAVE_W32_SYSTEM
static char *name;
if (!name)
name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "gnupg", NULL);
return name;
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_DATADIR;
#endif /*!HAVE_W32_SYSTEM*/
}
const char *
gnupg_localedir (void)
{
#ifdef HAVE_W32_SYSTEM
static char *name;
if (!name)
name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "locale",
NULL);
return name;
#else /*!HAVE_W32_SYSTEM*/
return LOCALEDIR;
#endif /*!HAVE_W32_SYSTEM*/
}
/* Return the name of the cache directory. The name is allocated in a
static area on the first use. Windows only: If the directory does
not exist it is created. */
const char *
gnupg_cachedir (void)
{
#ifdef HAVE_W32_SYSTEM
static const char *dir;
if (!dir)
{
const char *rdir;
rdir = w32_rootdir ();
if (w32_portable_app)
{
dir = xstrconcat (rdir,
DIRSEP_S, "var",
DIRSEP_S, "cache",
DIRSEP_S, "gnupg", NULL);
}
else
{
char path[MAX_PATH];
const char *s1[] = { "GNU", "cache", "gnupg", NULL };
int s1_len;
const char **comp;
s1_len = 0;
for (comp = s1; *comp; comp++)
s1_len += 1 + strlen (*comp);
if (w32_shgetfolderpath (NULL, CSIDL_LOCAL_APPDATA|CSIDL_FLAG_CREATE,
NULL, 0, path) >= 0)
{
char *tmp = xmalloc (strlen (path) + s1_len + 1);
char *p;
p = stpcpy (tmp, path);
for (comp = s1; *comp; comp++)
{
p = stpcpy (p, "\\");
p = stpcpy (p, *comp);
if (access (tmp, F_OK))
w32_try_mkdir (tmp);
}
dir = tmp;
}
else
{
dir = "c:\\temp\\cache\\gnupg";
#ifdef HAVE_W32CE_SYSTEM
dir += 2;
w32_try_mkdir ("\\temp\\cache");
w32_try_mkdir ("\\temp\\cache\\gnupg");
#endif
}
}
}
return dir;
#else /*!HAVE_W32_SYSTEM*/
return GNUPG_LOCALSTATEDIR "/cache/" PACKAGE_NAME;
#endif /*!HAVE_W32_SYSTEM*/
}
+/* Return the standard socket name used by gpg-agent. */
+const char *
+gpg_agent_socket_name (void)
+{
+ static char *name;
+
+ if (!name)
+ name = make_filename (gnupg_socketdir (), GPG_AGENT_SOCK_NAME, NULL);
+ return name;
+}
+
/* Return the user socket name used by DirMngr. */
const char *
dirmngr_socket_name (void)
{
static char *name;
if (!name)
name = make_filename (gnupg_socketdir (), DIRMNGR_SOCK_NAME, NULL);
return name;
}
/* Return the default pinentry name. If RESET is true the internal
cache is first flushed. */
static const char *
get_default_pinentry_name (int reset)
{
static struct {
const char *(*rfnc)(void);
const char *name;
} names[] = {
/* The first entry is what we return in case we found no
other pinentry. */
{ gnupg_bindir, DIRSEP_S "pinentry" EXEEXT_S },
#ifdef HAVE_W32_SYSTEM
/* Try Gpg4win directory (with bin and without.) */
{ w32_rootdir, "\\..\\Gpg4win\\bin\\pinentry.exe" },
{ w32_rootdir, "\\..\\Gpg4win\\pinentry.exe" },
/* Try old Gpgwin directory. */
{ w32_rootdir, "\\..\\GNU\\GnuPG\\pinentry.exe" },
/* Try a Pinentry from the common GNU dir. */
{ w32_rootdir, "\\..\\GNU\\bin\\pinentry.exe" },
#endif
/* Last chance is a pinentry-basic (which comes with the
GnuPG 2.1 Windows installer). */
{ gnupg_bindir, DIRSEP_S "pinentry-basic" EXEEXT_S }
};
static char *name;
if (reset)
{
xfree (name);
name = NULL;
}
if (!name)
{
int i;
for (i=0; i < DIM(names); i++)
{
char *name2;
name2 = xstrconcat (names[i].rfnc (), names[i].name, NULL);
if (!access (name2, F_OK))
{
/* Use that pinentry. */
xfree (name);
name = name2;
break;
}
if (!i) /* Store the first as fallback return. */
name = name2;
else
xfree (name2);
}
}
return name;
}
/* If set, 'gnupg_module_name' returns modules from that build
* directory. */
static char *gnupg_build_directory;
/* For sanity checks. */
static int gnupg_module_name_called;
/* Set NEWDIR as the new build directory. This will make
* 'gnupg_module_name' return modules from that build directory. Must
* be called before any invocation of 'gnupg_module_name', and must
* not be called twice. It can be used by test suites to make sure
* the components from the build directory are used instead of
* potentially outdated installed ones. */
void
gnupg_set_builddir (const char *newdir)
{
log_assert (! gnupg_module_name_called);
log_assert (! gnupg_build_directory);
gnupg_build_directory = xtrystrdup (newdir);
}
/* If no build directory has been configured, try to set it from the
* environment. We only do this in development builds to avoid
* increasing the set of influential environment variables and hence
* the attack surface of production builds. */
static void
gnupg_set_builddir_from_env (void)
{
#if defined(IS_DEVELOPMENT_VERSION) || defined(ENABLE_GNUPG_BUILDDIR_ENVVAR)
if (gnupg_build_directory)
return;
gnupg_build_directory = getenv ("GNUPG_BUILDDIR");
#endif
}
/* Return the file name of a helper tool. WHICH is one of the
GNUPG_MODULE_NAME_foo constants. */
const char *
gnupg_module_name (int which)
{
gnupg_set_builddir_from_env ();
gnupg_module_name_called = 1;
#define X(a,b,c) do { \
static char *name; \
if (!name) \
name = gnupg_build_directory \
? xstrconcat (gnupg_build_directory, \
DIRSEP_S b DIRSEP_S c EXEEXT_S, NULL) \
: xstrconcat (gnupg_ ## a (), DIRSEP_S c EXEEXT_S, NULL); \
return name; \
} while (0)
switch (which)
{
case GNUPG_MODULE_NAME_AGENT:
#ifdef GNUPG_DEFAULT_AGENT
return GNUPG_DEFAULT_AGENT;
#else
X(bindir, "agent", "gpg-agent");
#endif
case GNUPG_MODULE_NAME_PINENTRY:
#ifdef GNUPG_DEFAULT_PINENTRY
return GNUPG_DEFAULT_PINENTRY; /* (Set by a configure option) */
#else
return get_default_pinentry_name (0);
#endif
case GNUPG_MODULE_NAME_SCDAEMON:
#ifdef GNUPG_DEFAULT_SCDAEMON
return GNUPG_DEFAULT_SCDAEMON;
#else
X(libexecdir, "scd", "scdaemon");
#endif
case GNUPG_MODULE_NAME_DIRMNGR:
#ifdef GNUPG_DEFAULT_DIRMNGR
return GNUPG_DEFAULT_DIRMNGR;
#else
X(bindir, "dirmngr", DIRMNGR_NAME);
#endif
case GNUPG_MODULE_NAME_PROTECT_TOOL:
#ifdef GNUPG_DEFAULT_PROTECT_TOOL
return GNUPG_DEFAULT_PROTECT_TOOL;
#else
X(libexecdir, "agent", "gpg-protect-tool");
#endif
case GNUPG_MODULE_NAME_DIRMNGR_LDAP:
#ifdef GNUPG_DEFAULT_DIRMNGR_LDAP
return GNUPG_DEFAULT_DIRMNGR_LDAP;
#else
X(libexecdir, "dirmngr", "dirmngr_ldap");
#endif
case GNUPG_MODULE_NAME_CHECK_PATTERN:
X(libexecdir, "tools", "gpg-check-pattern");
case GNUPG_MODULE_NAME_GPGSM:
X(bindir, "sm", "gpgsm");
case GNUPG_MODULE_NAME_GPG:
#if USE_GPG2_HACK
if (! gnupg_build_directory)
X(bindir, "g10", GPG_NAME "2");
else
#endif
X(bindir, "g10", GPG_NAME);
case GNUPG_MODULE_NAME_GPGV:
#if USE_GPG2_HACK
if (! gnupg_build_directory)
X(bindir, "g10", GPG_NAME "v2");
else
#endif
X(bindir, "g10", GPG_NAME "v");
case GNUPG_MODULE_NAME_CONNECT_AGENT:
X(bindir, "tools", "gpg-connect-agent");
case GNUPG_MODULE_NAME_GPGCONF:
X(bindir, "tools", "gpgconf");
default:
BUG ();
}
#undef X
}
/* Flush some of the cached module names. This is for example used by
gpg-agent to allow configuring a different pinentry. */
void
gnupg_module_name_flush_some (void)
{
(void)get_default_pinentry_name (1);
}