security-and-privacy/gnupg
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gnupg
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* protect-tool.c (main): Setup the used character set. 

* gpg-agent.c (main): Ditto.

* gpg-agent.c (set_debug): New.  New option --debug-level.
(main): New option --gpgconf-list.
This commit is contained in:
Werner Koch 2004-02-18 16:57:38 +00:00
parent 81edc1e40e
commit bda3467067
8 changed files with 112 additions and 580 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
NEWS
View File

@ -8,9 +8,15 @@ Noteworthy changes in version 1.9.5
* [gpgsm] The --import command is now able to autodetect pkcs#12
files and import secret and private keys from this file format.
* [gpgsm] The pinentry will no present a description of the key for
* [gpgsm] The pinentry will now present a description of the key for
whom the passphrase is requests.
* [gpgsm] New option --with-validation to check the validity of key
while listing it.
* New option --debug-level={none,basic,advanced,expert,guru} to map
the debug flags to sensitive levels on a per program base.
Noteworthy changes in version 1.9.4 (2004-01-30)
------------------------------------------------

15
agent/ChangeLog
View File

@ -1,3 +1,18 @@
2004-02-18 Werner Koch <wk@gnupg.org>
* protect-tool.c (main): Setup the used character set.
* gpg-agent.c (main): Ditto.
* gpg-agent.c (set_debug): New. New option --debug-level.
(main): New option --gpgconf-list.
2004-02-17 Werner Koch <wk@gnupg.org>
* pksign.c (do_encode_md): Cleaned up by using gcry_sexp_build.
* Makefile.am (gpg_protect_tool_SOURCES): Removed
simple-pwquery.[ch], as we once moved it to ../common.
2004-02-13 Werner Koch <wk@gnupg.org>
* command.c (cmd_setkeydesc): New.

1
agent/Makefile.am
View File

@ -51,7 +51,6 @@ gpg_agent_LDADD = ../jnlib/libjnlib.a ../common/libcommon.a \
gpg_protect_tool_SOURCES = \
protect-tool.c \
protect.c \
simple-pwquery.c simple-pwquery.h \
minip12.c minip12.h
gpg_protect_tool_LDADD = ../jnlib/libjnlib.a \

80
agent/gpg-agent.c
View File

@ -51,11 +51,13 @@ enum cmd_and_opt_values
oQuiet = 'q',
oSh = 's',
oVerbose = 'v',
oNoVerbose = 500,
aGPGConfList,
oOptions,
oDebug,
oDebugAll,
oDebugLevel,
oDebugWait,
oNoGreeting,
oNoOptions,
@ -86,6 +88,8 @@ aTest };
static ARGPARSE_OPTS opts[] = {
{ aGPGConfList, "gpgconf-list", 256, "@" },
{ 301, NULL, 0, N_("@Options:\n ") },
@ -96,8 +100,9 @@ static ARGPARSE_OPTS opts[] = {
{ oSh, "sh", 0, N_("sh-style command output") },
{ oCsh, "csh", 0, N_("csh-style command output") },
{ oOptions, "options" , 2, N_("read options from file")},
{ oDebug, "debug" ,4|16, N_("set debugging flags")},
{ oDebugAll, "debug-all" ,0, N_("enable full debugging")},
{ oDebug, "debug" ,4|16, "@"},
{ oDebugAll, "debug-all" ,0, "@"},
{ oDebugLevel, "debug-level" ,2, "@"},
{ oDebugWait,"debug-wait",1, "@"},
{ oNoDetach, "no-detach" ,0, N_("do not detach from the console")},
{ oNoGrab, "no-grab" ,0, N_("do not grab keyboard and mouse")},
@ -145,6 +150,8 @@ static char *default_lc_messages;
/* Name of a config file, which will be reread on a HUP if it is not NULL. */
static char *config_filename;
/* Helper to implement --debug-level */
static const char *debug_level;
/* Local prototypes. */
static void create_directories (void);
@ -216,6 +223,48 @@ my_gcry_logger (void *dummy, int level, const char *fmt, va_list arg_ptr)
}
/* Setup the debugging. With a LEVEL of NULL only the active debug
flags are propagated to the subsystems. With LEVEL set, a specific
set of debug flags is set; thus overriding all flags already
set. Note that we don't fail here, because it is important to keep
gpg-agent running even after re-reading the options due to a
SIGHUP. */
static void
set_debug (void)
{
if (!debug_level)
;
else if (!strcmp (debug_level, "none"))
opt.debug = 0;
else if (!strcmp (debug_level, "basic"))
opt.debug = DBG_ASSUAN_VALUE;
else if (!strcmp (debug_level, "advanced"))
opt.debug = DBG_ASSUAN_VALUE|DBG_COMMAND_VALUE;
else if (!strcmp (debug_level, "expert"))
opt.debug = (DBG_ASSUAN_VALUE|DBG_COMMAND_VALUE
|DBG_CACHE_VALUE);
else if (!strcmp (debug_level, "guru"))
opt.debug = ~0;
else
{
log_error (_("invalid debug-level `%s' given\n"), debug_level);
opt.debug = 0; /* Reset debugging, so that prior debug
statements won't have an undesired effect. */
}
if (opt.debug && !opt.verbose)
opt.verbose = 1;
if (opt.debug && opt.quiet)
opt.quiet = 0;
if (opt.debug & DBG_MPI_VALUE)
gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 2);
if (opt.debug & DBG_CRYPTO_VALUE )
gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1);
gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
}
static void
cleanup (void)
{
@ -286,6 +335,7 @@ parse_rereadable_options (ARGPARSE_ARGS *pargs)
case oDebug: opt.debug |= pargs->r.ret_ulong; break;
case oDebugAll: opt.debug = ~0; break;
case oDebugLevel: debug_level = pargs->r.ret_str; break;
case oNoGrab: opt.no_grab = 1; break;
@ -325,6 +375,7 @@ main (int argc, char **argv )
char *logfile = NULL;
int debug_wait = 0;
int disable_pth = 0;
int gpgconf_list = 0;
set_strusage (my_strusage);
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
@ -332,6 +383,10 @@ main (int argc, char **argv )
when adding any stuff between here and the call to INIT_SECMEM()
somewhere after the option parsing */
log_set_prefix ("gpg-agent", 1|4);
/* Try to auto set the character set. */
set_native_charset (NULL);
i18n_init ();
/* We need to initialize Pth before libgcrypt, because the libgcrypt
@ -446,6 +501,7 @@ main (int argc, char **argv )
continue; /* Already handled */
switch (pargs.r_opt)
{
case aGPGConfList: gpgconf_list = 1; break;
case oBatch: opt.batch=1; break;
case oDebugWait: debug_wait = pargs.r.ret_int; break;
@ -509,6 +565,7 @@ main (int argc, char **argv )
log_info ("NOTE: this is a development version!\n");
#endif
set_debug ();
if (atexit (cleanup))
{
@ -526,6 +583,22 @@ main (int argc, char **argv )
sleep (debug_wait);
log_debug ("... okay\n");
}
if (gpgconf_list)
{ /* List options and default values in the GPG Conf format. */
printf ("gpgconf-gpg-agent.conf:\"%s\n", config_filename);
printf ("verbose:\n"
"quiet:\n"
"debug-level:none\n"
"log-file:\n"
"force:\n"
"faked-system-time:\n"
"no-greeting:\n");
agent_exit (0);
}
if (!pipe_server && !is_daemon)
log_info (_("please use the option `--daemon'"
@ -853,6 +926,7 @@ reread_configuration (void)
parse_rereadable_options (&pargs);
}
fclose (fp);
set_debug ();
}

28
agent/pksign.c
View File

@ -1,5 +1,5 @@
/* pksign.c - public key signing (well, acually using a secret key)
* Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
/* pksign.c - public key signing (well, actually using a secret key)
* Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
@ -35,17 +35,10 @@ static int
do_encode_md (const byte * md, size_t mdlen, int algo, gcry_sexp_t * r_hash)
{
gcry_sexp_t hash;
const char * s;
char * p, tmp[16];
const char *s;
char tmp[16+1];
int i, rc;
#ifdef __GNUC__
#warning I do not like that stuff - libgcrypt provides easier interfaces. -wk
#endif
/* FIXME: Either use the build function or create canonical encoded
S-expressions. */
p = xmalloc (64 + 2 * mdlen);
s = gcry_md_algo_name (algo);
if (s && strlen (s) < 16)
{
@ -53,15 +46,10 @@ do_encode_md (const byte * md, size_t mdlen, int algo, gcry_sexp_t * r_hash)
tmp[i] = tolower (s[i]);
tmp[i] = '\0';
}
sprintf (p, "(data\n (flags pkcs1)\n (hash %s #", tmp);
for (i=0; i < mdlen; i++)
{
sprintf (tmp, "%02x", (byte)md[i]);
strcat (p, tmp);
}
strcat (p, "#))\n");
rc = gcry_sexp_sscan (&hash, NULL, p, strlen (p));
xfree (p);
rc = gcry_sexp_build (&hash, NULL,
"(data (flags pkcs1) (hash %s %b))",
tmp,
mdlen, md);
*r_hash = hash;
return rc;
}

5
agent/protect-tool.c
View File

@ -872,6 +872,10 @@ main (int argc, char **argv )
set_strusage (my_strusage);
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
log_set_prefix ("gpg-protect-tool", 1);
/* Try to auto set the character set. */
set_native_charset (NULL);
i18n_init ();
if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
@ -884,6 +888,7 @@ main (int argc, char **argv )
gcry_control (GCRYCTL_INIT_SECMEM, 16384, 0);
#ifdef __MINGW32__
opt_homedir = read_w32_registry_string ( NULL,
"Software\\GNU\\GnuPG", "HomeDir" );

486
agent/simple-pwquery.c
View File

@ -1,486 +0,0 @@
/* simple-pwquery.c - A simple password query client for gpg-agent
* Copyright (C) 2002 Free Software Foundation, Inc.
*
* 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
*/
/* This module is intended as a standalone client implementation to
gpg-agent's GET_PASSPHRASE command. In particular it does not use
the Assuan library and can only cope with an already running
gpg-agent. Some stuff is configurable in the header file. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#define SIMPLE_PWQUERY_IMPLEMENTATION 1
#include "simple-pwquery.h"
#if defined(SPWQ_USE_LOGGING) && !defined(HAVE_JNLIB_LOGGING)
# undef SPWQ_USE_LOGGING
#endif
#ifndef _
#define _(a) (a)
#endif
#if !defined (hexdigitp) && !defined (xtoi_2)
#define digitp(p) (*(p) >= '0' && *(p) <= '9')
#define hexdigitp(a) (digitp (a) \
|| (*(a) >= 'A' && *(a) <= 'F') \
|| (*(a) >= 'a' && *(a) <= 'f'))
#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
/* Write NBYTES of BUF to file descriptor FD. */
static int
writen (int fd, const void *buf, size_t nbytes)
{
size_t nleft = nbytes;
int nwritten;
while (nleft > 0)
{
nwritten = write( fd, buf, nleft );
if (nwritten < 0)
{
if (errno == EINTR)
nwritten = 0;
else {
#ifdef SPWQ_USE_LOGGING
log_error ("write failed: %s\n", strerror (errno));
#endif
return SPWQ_IO_ERROR;
}
}
nleft -= nwritten;
buf = (const char*)buf + nwritten;
}
return 0;
}
/* Read an entire line and return number of bytes read. */
static int
readline (int fd, char *buf, size_t buflen)
{
size_t nleft = buflen;
char *p;
int nread = 0;
while (nleft > 0)
{
int n = read (fd, buf, nleft);
if (n < 0)
{
if (errno == EINTR)
continue;
return -(SPWQ_IO_ERROR);
}
else if (!n)
{
return -(SPWQ_PROTOCOL_ERROR); /* incomplete line */
}
p = buf;
nleft -= n;
buf += n;
nread += n;
for (; n && *p != '\n'; n--, p++)
;
if (n)
{
break; /* at least one full line available - that's enough.
This function is just a simple implementation, so
it is okay to forget about pending bytes */
}
}
return nread;
}
/* Send an option to the agent */
static int
agent_send_option (int fd, const char *name, const char *value)
{
char buf[200];
int nread;
char *line;
int i;
line = spwq_malloc (7 + strlen (name) + 1 + strlen (value) + 2);
if (!line)
return SPWQ_OUT_OF_CORE;
strcpy (stpcpy (stpcpy (stpcpy (
stpcpy (line, "OPTION "), name), "="), value), "\n");
i = writen (fd, line, strlen (line));
spwq_free (line);
if (i)
return i;
/* get response */
nread = readline (fd, buf, DIM(buf)-1);
if (nread < 0)
return -nread;
if (nread < 3)
return SPWQ_PROTOCOL_ERROR;
if (buf[0] == 'O' && buf[1] == 'K' && (buf[2] == ' ' || buf[2] == '\n'))
return 0; /* okay */
return SPWQ_ERR_RESPONSE;
}
/* Send all available options to the agent. */
static int
agent_send_all_options (int fd)
{
char *dft_display = NULL;
char *dft_ttyname = NULL;
char *dft_ttytype = NULL;
int rc = 0;
dft_display = getenv ("DISPLAY");
if (dft_display)
{
if ((rc = agent_send_option (fd, "display", dft_display)))
return rc;
}
dft_ttyname = getenv ("GPG_TTY");
if ((!dft_ttyname || !*dft_ttyname) && ttyname (0))
dft_ttyname = ttyname (0);
if (dft_ttyname && *dft_ttyname)
{
if ((rc=agent_send_option (fd, "ttyname", dft_ttyname)))
return rc;
}
dft_ttytype = getenv ("TERM");
if (dft_ttyname && dft_ttytype)
{
if ((rc = agent_send_option (fd, "ttytype", dft_ttytype)))
return rc;
}
#if defined(HAVE_SETLOCALE)
{
char *old_lc = NULL;
char *dft_lc = NULL;
#if defined(LC_CTYPE)
old_lc = setlocale (LC_CTYPE, NULL);
if (old_lc)
{
char *p = spwq_malloc (strlen (old_lc)+1);
if (!p)
return SPWQ_OUT_OF_CORE;
strcpy (p, old_lc);
old_lc = p;
}
dft_lc = setlocale (LC_CTYPE, "");
if (dft_ttyname && dft_lc)
rc = agent_send_option (fd, "lc-ctype", dft_lc);
if (old_lc)
{
setlocale (LC_CTYPE, old_lc);
spwq_free (old_lc);
}
if (rc)
return rc;
#endif
#if defined(LC_MESSAGES)
old_lc = setlocale (LC_MESSAGES, NULL);
if (old_lc)
{
char *p = spwq_malloc (strlen (old_lc)+1);
if (!p)
return SPWQ_OUT_OF_CORE;
strcpy (p, old_lc);
old_lc = p;
}
dft_lc = setlocale (LC_MESSAGES, "");
if (dft_ttyname && dft_lc)
rc = agent_send_option (fd, "lc-messages", dft_lc);
if (old_lc)
{
setlocale (LC_MESSAGES, old_lc);
spwq_free (old_lc);
}
if (rc)
return rc;
#endif
}
#endif /*HAVE_SETLOCALE*/
return 0;
}
/* Try to open a connection to the agent, send all options and return
the file descriptor for the connection. Return -1 in case of
error. */
static int
agent_open (int *rfd)
{
int rc;
int fd;
char *infostr, *p;
struct sockaddr_un client_addr;
size_t len;
int prot;
char line[200];
int nread;
*rfd = -1;
infostr = getenv ( "GPG_AGENT_INFO" );
if ( !infostr )
{
#ifdef SPWQ_USE_LOGGING
log_error (_("gpg-agent is not available in this session\n"));
#endif
return SPWQ_NO_AGENT;
}
if ( !(p = strchr ( infostr, ':')) || p == infostr
|| (p-infostr)+1 >= sizeof client_addr.sun_path )
{
#ifdef SPWQ_USE_LOGGING
log_error ( _("malformed GPG_AGENT_INFO environment variable\n"));
#endif
return SPWQ_NO_AGENT;
}
*p++ = 0;
while (*p && *p != ':')
p++;
prot = *p? atoi (p+1) : 0;
if ( prot != 1)
{
#ifdef SPWQ_USE_LOGGING
log_error (_("gpg-agent protocol version %d is not supported\n"),prot);
#endif
return SPWQ_PROTOCOL_ERROR;
}
if( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1 )
{
#ifdef SPWQ_USE_LOGGING
log_error ("can't create socket: %s\n", strerror(errno) );
#endif
return SPWQ_SYS_ERROR;
}
memset (&client_addr, 0, sizeof client_addr);
client_addr.sun_family = AF_UNIX;
strcpy (client_addr.sun_path, infostr);
len = (offsetof (struct sockaddr_un, sun_path)
+ strlen(client_addr.sun_path) + 1);
if (connect (fd, (struct sockaddr*)&client_addr, len ) == -1)
{
#ifdef SPWQ_USE_LOGGING
log_error ( _("can't connect to `%s': %s\n"), infostr, strerror (errno));
#endif
close (fd );
return SPWQ_IO_ERROR;
}
nread = readline (fd, line, DIM(line));
if (nread < 3 || !(line[0] == 'O' && line[1] == 'K'
&& (line[2] == '\n' || line[2] == ' ')) )
{
#ifdef SPWQ_USE_LOGGING
log_error ( _("communication problem with gpg-agent\n"));
#endif
close (fd );
return SPWQ_PROTOCOL_ERROR;
}
rc = agent_send_all_options (fd);
if (rc)
{
#ifdef SPWQ_USE_LOGGING
log_error (_("problem setting the gpg-agent options\n"));
#endif
close (fd);
return rc;
}
*rfd = fd;
return 0;
}
/* Copy text to BUFFER and escape as required. Return a poiinter to
the end of the new buffer. NOte that BUFFER must be large enough
to keep the entire text; allocataing it 3 times the size of TEXT
is sufficient. */
static char *
copy_and_escape (char *buffer, const char *text)
{
int i;
char *p = buffer;
for (i=0; text[i]; i++)
{
if (text[i] < ' ' || text[i] == '+')
{
sprintf (p, "%%%02X", text[i]);
p += 3;
}
else if (text[i] == ' ')
*p++ = '+';
else
*p++ = text[i];
}
return p;
}
/* Ask the gpg-agent for a passphrase and present the user with a
DESCRIPTION, a PROMPT and optiaonlly with a TRYAGAIN extra text.
If a CACHEID is not NULL it is used to locate the passphrase in in
the cache and store it under this ID. If ERRORCODE is not NULL it
should point a variable receiving an errorcode; thsi errocode might
be 0 if the user canceled the operation. The function returns NULL
to indicate an error. */
char *
simple_pwquery (const char *cacheid,
const char *tryagain,
const char *prompt,
const char *description,
int *errorcode)
{
int fd = -1;
int nread;
char *result = NULL;
char *pw = NULL;
char *p;
int rc, i;
rc = agent_open (&fd);
if (rc)
goto leave;
if (!cacheid)
cacheid = "X";
if (!tryagain)
tryagain = "X";
if (!prompt)
prompt = "X";
if (!description)
description = "X";
{
char *line;
/* We allocate 3 times the needed space so that there is enough
space for escaping. */
line = spwq_malloc (15
+ 3*strlen (cacheid) + 1
+ 3*strlen (tryagain) + 1
+ 3*strlen (prompt) + 1
+ 3*strlen (description) + 1
+ 2);
if (!line)
{
rc = SPWQ_OUT_OF_CORE;
goto leave;
}
strcpy (line, "GET_PASSPHRASE ");
p = line+15;
p = copy_and_escape (p, cacheid);
*p++ = ' ';
p = copy_and_escape (p, tryagain);
*p++ = ' ';
p = copy_and_escape (p, prompt);
*p++ = ' ';
p = copy_and_escape (p, description);
*p++ = '\n';
rc = writen (fd, line, p - line);
spwq_free (line);
if (rc)
goto leave;
}
/* get response */
pw = spwq_secure_malloc (500);
nread = readline (fd, pw, 499);
if (nread < 0)
{
rc = -nread;
goto leave;
}
if (nread < 3)
{
rc = SPWQ_PROTOCOL_ERROR;
goto leave;
}
if (pw[0] == 'O' && pw[1] == 'K' && pw[2] == ' ')
{ /* we got a passphrase - convert it back from hex */
size_t pwlen = 0;
for (i=3; i < nread && hexdigitp (pw+i); i+=2)
pw[pwlen++] = xtoi_2 (pw+i);
pw[pwlen] = 0; /* make a C String */
result = pw;
pw = NULL;
}
else if (nread > 7 && !memcmp (pw, "ERR 111", 7)
&& (pw[7] == ' ' || pw[7] == '\n') )
{
#ifdef SPWQ_USE_LOGGING
log_info (_("canceled by user\n") );
#endif
*errorcode = 0; /* canceled */
}
else
{
#ifdef SPWQ_USE_LOGGING
log_error (_("problem with the agent\n"));
#endif
rc = SPWQ_ERR_RESPONSE;
}
leave:
if (errorcode)
*errorcode = rc;
if (fd != -1)
close (fd);
if (pw)
spwq_free (pw);
return result;
}

69
agent/simple-pwquery.h
View File

@ -1,69 +0,0 @@
/* simple-pwquery.c - A simple password query cleint for gpg-agent
* Copyright (C) 2002 Free Software Foundation, Inc.
*
* 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
*/
#ifndef SIMPLE_PWQUERY_H
#define SIMPLE_PWQUERY_H
#ifdef SIMPLE_PWQUERY_IMPLEMENTATION /* Begin configuration stuff. */
/* Include whatever files you need. */
#include <gcrypt.h>
#include "../jnlib/logging.h"
/* Try to write error message using the standard log mechanism. The
current implementation requires that the HAVE_JNLIB_LOGGING is also
defined. */
#define SPWQ_USE_LOGGING 1
/* Memory allocation functions used by the implementation. Note, that
the returned value is expected to be freed with
spwq_secure_free. */
#define spwq_malloc(a) gcry_malloc (a)
#define spwq_free(a) gcry_free (a)
#define spwq_secure_malloc(a) gcry_malloc_secure (a)
#define spwq_secure_free(a) gcry_free (a)
#endif /*SIMPLE_PWQUERY_IMPLEMENTATION*/ /* End configuration stuff. */
/* Ask the gpg-agent for a passphrase and present the user with a
DESCRIPTION, a PROMPT and optiaonlly with a TRYAGAIN extra text.
If a CACHEID is not NULL it is used to locate the passphrase in in
the cache and store it under this ID. If ERRORCODE is not NULL it
should point a variable receiving an errorcode; thsi errocode might
be 0 if the user canceled the operation. The function returns NULL
to indicate an error. */
char *simple_pwquery (const char *cacheid,
const char *tryagain,
const char *prompt,
const char *description,
int *errorcode);
#define SPWQ_OUT_OF_CORE 1
#define SPWQ_IO_ERROR 2
#define SPWQ_PROTOCOL_ERROR 3
#define SPWQ_ERR_RESPONSE 4
#define SPWQ_NO_AGENT 5
#define SPWQ_SYS_ERROR 6
#define SPWQ_GENERAL_ERROR 7
#endif /*SIMPLE_PWQUERY_H*/