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diff --git a/src/agent.c b/src/agent.c
index b49bd2f..b51dc7e 100644
--- a/src/agent.c
+++ b/src/agent.c
@@ -1,1297 +1,1297 @@
/* agent.c - Talking to gpg-agent.
Copyright (C) 2006, 2007, 2008, 2015 g10 Code GmbH
This file is part of Scute.
-
+
Scute 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.
Scute 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 Scute; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, g10 Code GmbH gives permission
to link this library: with the Mozilla Foundation's code for
Mozilla (or with modified versions of it that use the same license
as the "Mozilla" code), and distribute the linked executables. You
must obey the GNU General Public License in all respects for all of
the code used other than "Mozilla". If you modify this file, you
may extend this exception to your version of the file, but you are
not obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
#include <errno.h>
#include <string.h>
#include <stdarg.h>
#ifdef HAVE_W32_SYSTEM
#define PATHSEP_C ';'
#define WINVER 0x0500 /* Required for AllowSetForegroundWindow. */
#include <windows.h>
#else
#define PATHSEP_C ':'
#endif
#include <assuan.h>
#include <gpg-error.h>
#include "debug.h"
#include "support.h"
#include "sexp-parse.h"
#include "cert.h"
#include "agent.h"
/* The global agent context. */
static assuan_context_t agent_ctx = NULL;
/* The version number of the agent. */
static int agent_version_major;
static int agent_version_minor;
/* Hack required for Windows. */
-void
+void
gnupg_allow_set_foregound_window (pid_t pid)
{
if (!pid || pid == (pid_t)(-1))
return;
#ifdef HAVE_W32_SYSTEM
else if (!AllowSetForegroundWindow (pid))
DEBUG (DBG_CRIT, "AllowSetForegroundWindow(%lu) failed: %i\n",
(unsigned long)pid, GetLastError ());
#endif
}
#ifdef HAVE_W32_SYSTEM
/* Helper function to build_w32_commandline. */
static char *
build_w32_commandline_copy (char *buffer, const char *string)
{
char *p = buffer;
const char *s;
if (!*string) /* Empty string. */
p = stpcpy (p, "\"\"");
else if (strpbrk (string, " \t\n\v\f\""))
{
/* Need top do some kind of quoting. */
p = stpcpy (p, "\"");
for (s=string; *s; s++)
{
*p++ = *s;
if (*s == '\"')
*p++ = *s;
}
*p++ = '\"';
*p = 0;
}
else
p = stpcpy (p, string);
return p;
}
/* Build a command line for use with W32's CreateProcess. On success
CMDLINE gets the address of a newly allocated string. */
static gpg_error_t
-build_w32_commandline (const char *pgmname, const char * const *argv,
+build_w32_commandline (const char *pgmname, const char * const *argv,
char **cmdline)
{
int i, n;
const char *s;
char *buf, *p;
*cmdline = NULL;
n = 0;
s = pgmname;
n += strlen (s) + 1 + 2; /* (1 space, 2 quoting */
for (; *s; s++)
if (*s == '\"')
n++; /* Need to double inner quotes. */
for (i=0; (s=argv[i]); i++)
{
n += strlen (s) + 1 + 2; /* (1 space, 2 quoting */
for (; *s; s++)
if (*s == '\"')
n++; /* Need to double inner quotes. */
}
n++;
buf = p = malloc (n);
if (!buf)
return gpg_error_from_syserror ();
p = build_w32_commandline_copy (p, pgmname);
- for (i=0; argv[i]; i++)
+ for (i=0; argv[i]; i++)
{
*p++ = ' ';
p = build_w32_commandline_copy (p, argv[i]);
}
*cmdline= buf;
return 0;
}
/* Spawn a new process and immediately detach from it. The name of
the program to exec is PGMNAME and its arguments are in ARGV (the
programname is automatically passed as first argument). An error
is returned if pgmname is not executable; to make this work it is
necessary to provide an absolute file name. All standard file
descriptors are connected to /dev/null. */
static gpg_error_t
spawn_process_detached (const char *pgmname, const char *argv[])
{
gpg_error_t err;
SECURITY_ATTRIBUTES sec_attr;
- PROCESS_INFORMATION pi =
+ PROCESS_INFORMATION pi =
{
NULL, /* Returns process handle. */
0, /* Returns primary thread handle. */
0, /* Returns pid. */
0 /* Returns tid. */
};
STARTUPINFO si;
int cr_flags;
char *cmdline;
if (access (pgmname, X_OK))
return gpg_error_from_syserror ();
/* Prepare security attributes. */
memset (&sec_attr, 0, sizeof sec_attr );
sec_attr.nLength = sizeof sec_attr;
sec_attr.bInheritHandle = FALSE;
-
+
/* Build the command line. */
err = build_w32_commandline (pgmname, argv, &cmdline);
if (err)
- return err;
+ return err;
/* Start the process. */
memset (&si, 0, sizeof si);
si.cb = sizeof (si);
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_MINIMIZE;
cr_flags = (CREATE_DEFAULT_ERROR_MODE
| GetPriorityClass (GetCurrentProcess ())
| CREATE_NEW_PROCESS_GROUP
- | DETACHED_PROCESS);
+ | DETACHED_PROCESS);
DEBUG (DBG_INFO, "CreateProcess(detached), path=`%s' cmdline=`%s'\n",
pgmname, cmdline);
if (!CreateProcess (pgmname, /* Program to start. */
cmdline, /* Command line arguments. */
&sec_attr, /* Process security attributes. */
&sec_attr, /* Thread security attributes. */
FALSE, /* Inherit handles. */
cr_flags, /* Creation flags. */
NULL, /* Environment. */
NULL, /* Use current drive/directory. */
&si, /* Startup information. */
&pi /* Returns process information. */
))
{
DEBUG (DBG_CRIT, "CreateProcess(detached) failed: %i\n",
GetLastError ());
free (cmdline);
return gpg_error (GPG_ERR_GENERAL);
}
free (cmdline);
cmdline = NULL;
DEBUG (DBG_INFO, "CreateProcess(detached) ready: hProcess=%p hThread=%p"
" dwProcessID=%d dwThreadId=%d\n", pi.hProcess, pi.hThread,
(int) pi.dwProcessId, (int) pi.dwThreadId);
- CloseHandle (pi.hThread);
+ CloseHandle (pi.hThread);
return 0;
}
#endif
/* Establish a connection to a running GPG agent. */
static gpg_error_t
agent_connect (assuan_context_t *ctx_r)
{
/* If we ever failed to connect via a socket we will force the use
of the pipe based server for the lifetime of the process. */
static int force_pipe_server = 0;
gpg_error_t err = 0;
char *infostr;
char *ptr;
assuan_context_t ctx = NULL;
err = assuan_new (&ctx);
if (err)
return err;
restart:
infostr = force_pipe_server ? NULL : getenv ("GPG_AGENT_INFO");
if (!infostr || !*infostr)
{
char *sockname;
/* First check whether we can connect at the standard
socket. */
sockname = make_filename (default_homedir (), "S.gpg-agent", NULL);
if (! sockname)
return gpg_error_from_errno (errno);
err = assuan_socket_connect (ctx, sockname, 0, 0);
if (err)
{
const char *agent_program;
/* With no success start a new server. */
DEBUG (DBG_INFO, "no running GPG agent at %s, starting one\n",
sockname);
agent_program = get_gpg_agent_path ();
#ifdef HAVE_W32_SYSTEM
{
/* Under Windows we start the server in daemon mode. This
is because the default is to use the standard socket
and thus there is no need for the GPG_AGENT_INFO
envvar. This is possible as we don't have a real unix
domain socket but use a plain file and thus there is no
need to care about non-local file systems. */
const char *argv[3];
argv[0] = "--daemon";
- argv[1] = "--use-standard-socket";
- argv[2] = NULL;
+ argv[1] = "--use-standard-socket";
+ argv[2] = NULL;
err = spawn_process_detached (agent_program, argv);
if (err)
DEBUG (DBG_CRIT, "failed to start agent `%s': %s\n",
agent_program, gpg_strerror (err));
else
{
/* Give the agent some time to prepare itself. */
Sleep (3 * 1000);
/* Now try again to connect the agent. */
err = assuan_socket_connect (ctx_r, sockname, 0, 0);
}
}
#else /*!HAVE_W32_SYSTEM*/
{
const char *pgmname;
const char *argv[3];
int no_close_list[3];
int i;
if ( !(pgmname = strrchr (agent_program, '/')))
pgmname = agent_program;
else
pgmname++;
-
+
argv[0] = pgmname;
argv[1] = "--server";
argv[2] = NULL;
-
+
i=0;
no_close_list[i++] = assuan_fd_from_posix_fd (fileno (stderr));
no_close_list[i] = -1;
-
+
/* Connect to the agent and perform initial handshaking. */
err = assuan_pipe_connect (ctx, agent_program, argv,
no_close_list, NULL, NULL, 0);
}
#endif /*!HAVE_W32_SYSTEM*/
}
free (sockname);
}
else
{
int pid;
int protocol_version;
infostr = strdup (infostr);
if (!infostr)
return gpg_error_from_errno (errno);
if (!(ptr = strchr (infostr, PATHSEP_C)) || ptr == infostr)
{
DEBUG (DBG_CRIT, "malformed GPG_AGENT_INFO environment variable");
free (infostr);
force_pipe_server = 1;
goto restart;
}
*(ptr++) = 0;
pid = atoi (ptr);
while (*ptr && *ptr != PATHSEP_C)
ptr++;
protocol_version = *ptr ? atoi (ptr + 1) : 0;
if (protocol_version != 1)
{
DEBUG (DBG_CRIT, "GPG agent protocol version '%d' not supported",
protocol_version);
free (infostr);
force_pipe_server = 1;
goto restart;
}
-
+
err = assuan_socket_connect (ctx, infostr, pid, 0);
free (infostr);
if (err)
{
DEBUG (DBG_CRIT, "cannot connect to GPG agent: %s", gpg_strerror (err));
force_pipe_server = 1;
goto restart;
}
}
if (err)
{
assuan_release (ctx);
DEBUG (DBG_CRIT, "cannot connect to GPG agent: %s", gpg_strerror (err));
return gpg_error (GPG_ERR_NO_AGENT);
}
if (_scute_debug_flags & DBG_ASSUAN)
assuan_set_log_stream (*ctx_r, _scute_debug_stream);
*ctx_r = ctx;
return 0;
}
/* This is the default inquiry callback. It mainly handles the
Pinentry notifications. */
static gpg_error_t
default_inq_cb (void *opaque, const char *line)
{
(void)opaque;
if (!strncmp (line, "PINENTRY_LAUNCHED", 17) && (line[17]==' '||!line[17]))
{
gnupg_allow_set_foregound_window ((pid_t)strtoul (line+17, NULL, 10));
/* We do not pass errors to avoid breaking other code. */
}
else
DEBUG (DBG_CRIT, "ignoring gpg-agent inquiry `%s'\n", line);
return 0;
}
/* Send a simple command to the agent. */
-static gpg_error_t
+static gpg_error_t
agent_simple_cmd (assuan_context_t ctx, const char *fmt, ...)
{
gpg_error_t err;
char *optstr;
va_list arg;
int res;
va_start (arg, fmt);
res = vasprintf (&optstr, fmt, arg);
va_end (arg);
if (res < 0)
return gpg_error_from_errno (errno);
err = assuan_transact (ctx, optstr, NULL, NULL, default_inq_cb,
NULL, NULL, NULL);
if (err)
DEBUG (DBG_CRIT, "gpg-agent command '%s' failed: %s", optstr,
gpg_strerror (err));
free (optstr);
-
+
return err;
}
/* Read and stroe the agent's version number. */
static gpg_error_t
read_version_cb (void *opaque, const void *buffer, size_t length)
{
char version[20];
const char *s;
(void) opaque;
if (length > sizeof (version) -1)
length = sizeof (version) - 1;
strncpy (version, buffer, length);
version[length] = 0;
agent_version_major = atoi (version);
s = strchr (version, '.');
agent_version_minor = s? atoi (s+1) : 0;
return 0;
}
-
+
/* Configure the GPG agent at connection CTX. */
static gpg_error_t
agent_configure (assuan_context_t ctx)
{
gpg_error_t err = 0;
char *dft_display = NULL;
char *dft_ttyname = NULL;
char *dft_ttytype = NULL;
#if defined(HAVE_SETLOCALE) && (defined(LC_CTYPE) || defined(LC_MESSAGES))
char *old_lc = NULL;
char *dft_lc = NULL;
#endif
char *dft_xauthority = NULL;
char *dft_pinentry_user_data = NULL;
err = agent_simple_cmd (ctx, "RESET");
if (err)
return err;
/* Set up display, terminal and locale options. */
dft_display = getenv ("DISPLAY");
if (dft_display)
err = agent_simple_cmd (ctx, "OPTION display=%s", dft_display);
if (err)
return err;
dft_ttyname = getenv ("GPG_TTY");
if ((!dft_ttyname || !*dft_ttyname) && ttyname (0))
dft_ttyname = ttyname (0);
if (dft_ttyname)
{
err = agent_simple_cmd (ctx, "OPTION ttyname=%s", dft_ttyname);
if (err)
return err;
}
dft_ttytype = getenv ("TERM");
if (dft_ttytype)
err = agent_simple_cmd (ctx, "OPTION ttytype=%s", dft_ttytype);
if (err)
return err;
#if defined(HAVE_SETLOCALE) && defined(LC_CTYPE)
old_lc = setlocale (LC_CTYPE, NULL);
if (old_lc)
{
old_lc = strdup (old_lc);
if (!old_lc)
return gpg_error_from_errno (errno);
}
dft_lc = setlocale (LC_CTYPE, "");
if (dft_lc)
err = agent_simple_cmd ("OPTION lc-ctype=%s", dft_lc);
if (old_lc)
{
setlocale (LC_CTYPE, old_lc);
free (old_lc);
}
#endif
if (err)
return err;
#if defined(HAVE_SETLOCALE) && defined(LC_MESSAGES)
old_lc = setlocale (LC_MESSAGES, NULL);
if (old_lc)
{
old_lc = strdup (old_lc);
if (!old_lc)
err = gpg_error_from_errno (errno);
}
dft_lc = setlocale (LC_MESSAGES, "");
if (dft_lc)
err = agent_simple_cmd ("OPTION lc-messages=%s", dft_lc);
if (old_lc)
{
setlocale (LC_MESSAGES, old_lc);
free (old_lc);
}
#endif
dft_xauthority = getenv ("XAUTHORITY");
if (dft_xauthority)
err = agent_simple_cmd (ctx, "OPTION xauthority=%s", dft_xauthority);
if (gpg_err_code (err) == GPG_ERR_UNKNOWN_OPTION)
err = 0;
else if (err)
return err;
dft_pinentry_user_data = getenv ("PINENTRY_USER_DATA");
if (dft_pinentry_user_data)
err = agent_simple_cmd (ctx, "OPTION pinentry_user_data=%s",
dft_pinentry_user_data);
if (err && gpg_err_code (err) != GPG_ERR_UNKNOWN_OPTION)
return err;
err = agent_simple_cmd (ctx, "OPTION allow-pinentry-notify");
if (err && gpg_err_code (err) != GPG_ERR_UNKNOWN_OPTION)
return err;
err = assuan_transact (ctx, "GETINFO version",
read_version_cb, NULL,
NULL, NULL, NULL, NULL);
if (gpg_err_code (err) == GPG_ERR_UNKNOWN_OPTION)
err = 0;
else if (err)
return err;
return err;
}
/* Try to connect to the agent via socket. Handle the server's
initial greeting. */
gpg_error_t
scute_agent_initialize (void)
{
gpg_error_t err = 0;
if (agent_ctx)
{
DEBUG (DBG_CRIT, "GPG Agent connection already established");
return 0;
}
DEBUG (DBG_INFO, "Establishing connection to gpg-agent");
err = agent_connect (&agent_ctx);
if (err)
return err;
err = agent_configure (agent_ctx);
if (err)
scute_agent_finalize ();
return err;
}
int
scute_agent_get_agent_version (int *minor)
{
*minor = agent_version_minor;
return agent_version_major;
}
/* Return a new malloced string by unescaping the string S. Escaping
is percent escaping and '+'/space mapping. A binary nul will
silently be replaced by a 0xFF. Function returns NULL to indicate
an out of memory status. */
static char *
unescape_status_string (const unsigned char *src)
{
char *buffer;
char *dst;
buffer = malloc (strlen (src) + 1);
if (!buffer)
return NULL;
dst = buffer;
while (*src)
{
if (*src == '%' && src[1] && src[2])
- {
+ {
src++;
*dst = xtoi_2 (src);
if (*dst == '\0')
*dst = '\xff';
dst++;
src += 2;
}
else if (*src == '+')
{
*(dst++) = ' ';
src++;
}
else
*(dst++) = *(src++);
}
- *dst = 0;
+ *dst = 0;
return buffer;
}
/* Take a 20 byte hexencoded string and put it into the the provided
20 byte buffer FPR in binary format. Returns true if successful,
and false otherwise. */
static int
unhexify_fpr (const char *hexstr, unsigned char *fpr)
{
const char *src;
int cnt;
/* Check for invalid or wrong length. */
for (src = hexstr, cnt = 0; hexdigitp (src); src++, cnt++)
;
if ((*src && !spacep (src)) || (cnt != 40))
return 0;
for (src = hexstr, cnt = 0; *src && !spacep (src); src += 2, cnt++)
fpr[cnt] = xtoi_2 (src);
return 1;
}
/* Take the serial number from LINE and return it verbatim in a newly
allocated string. We make sure that only hex characters are
returned. */
static char *
store_serialno (const char *line)
{
const char *src;
char *ptr;
for (src = line; hexdigitp (src); src++)
;
ptr = malloc (src + 1 - line);
if (ptr)
{
memcpy (ptr, line, src - line);
ptr[src - line] = 0;
}
return ptr;
}
/* Release the card info structure INFO. */
void
scute_agent_release_card_info (struct agent_card_info_s *info)
{
if (!info)
return;
free (info->serialno);
free (info->disp_name);
free (info->disp_lang);
free (info->pubkey_url);
free (info->login_data);
memset (info, 0, sizeof (*info));
}
/* FIXME: We are not returning out of memory errors. */
static gpg_error_t
learn_status_cb (void *opaque, const char *line)
{
struct agent_card_info_s *parm = opaque;
const char *keyword = line;
int keywordlen;
int i;
for (keywordlen = 0; *line && !spacep (line); line++, keywordlen++)
;
while (spacep (line))
line++;
if (keywordlen == 8 && !memcmp (keyword, "SERIALNO", keywordlen))
{
if (parm->serialno)
free (parm->serialno);
parm->serialno = store_serialno (line);
}
else if (keywordlen == 9 && !memcmp (keyword, "DISP-NAME", keywordlen))
{
if (parm->disp_name)
free (parm->disp_name);
parm->disp_name = unescape_status_string (line);
}
else if (keywordlen == 9 && !memcmp (keyword, "DISP-LANG", keywordlen))
{
if (parm->disp_lang)
free (parm->disp_lang);
parm->disp_lang = unescape_status_string (line);
}
else if (keywordlen == 8 && !memcmp (keyword, "DISP-SEX", keywordlen))
{
parm->disp_sex = *line == '1'? 1 : *line == '2' ? 2: 0;
}
else if (keywordlen == 10 && !memcmp (keyword, "PUBKEY-URL", keywordlen))
{
if (parm->pubkey_url)
free (parm->pubkey_url);
parm->pubkey_url = unescape_status_string (line);
}
else if (keywordlen == 10 && !memcmp (keyword, "LOGIN-DATA", keywordlen))
{
if (parm->login_data)
free (parm->login_data);
parm->login_data = unescape_status_string (line);
}
else if (keywordlen == 11 && !memcmp (keyword, "SIG-COUNTER", keywordlen))
{
parm->sig_counter = strtoul (line, NULL, 0);
}
else if (keywordlen == 10 && !memcmp (keyword, "CHV-STATUS", keywordlen))
{
char *p, *buf;
buf = p = unescape_status_string (line);
if (buf)
{
while (spacep (p))
p++;
parm->chv1_cached = atoi (p);
while (*p && !spacep (p))
p++;
while (spacep (p))
p++;
for (i = 0; *p && i < 3; i++)
{
parm->chvmaxlen[i] = atoi (p);
while (*p && !spacep (p))
p++;
while (spacep (p))
p++;
}
for (i=0; *p && i < 3; i++)
{
parm->chvretry[i] = atoi (p);
while (*p && !spacep (p))
p++;
while (spacep (p))
p++;
}
free (buf);
}
}
else if (keywordlen == 7 && !memcmp (keyword, "KEY-FPR", keywordlen))
{
int no = atoi (line);
while (*line && !spacep (line))
line++;
while (spacep (line))
line++;
if (no == 1)
parm->fpr1valid = unhexify_fpr (line, parm->fpr1);
else if (no == 2)
parm->fpr2valid = unhexify_fpr (line, parm->fpr2);
else if (no == 3)
parm->fpr3valid = unhexify_fpr (line, parm->fpr3);
}
else if (keywordlen == 6 && !memcmp (keyword, "CA-FPR", keywordlen))
{
int no = atoi (line);
while (*line && !spacep (line))
line++;
while (spacep (line))
line++;
if (no == 1)
parm->cafpr1valid = unhexify_fpr (line, parm->cafpr1);
else if (no == 2)
parm->cafpr2valid = unhexify_fpr (line, parm->cafpr2);
else if (no == 3)
parm->cafpr3valid = unhexify_fpr (line, parm->cafpr3);
}
else if (keywordlen == 11 && !memcmp (keyword, "KEYPAIRINFO", keywordlen))
{
const char *grip = line;
while (*line && !spacep (line))
line++;
if (line - grip == 40)
{
while (spacep (line))
line++;
if (!memcmp (line, "OPENPGP.", 8))
{
int no;
line += 8;
no = atoi (line);
if (no == 1)
{
memcpy (parm->grip1, grip, 40);
parm->grip1valid = 1;
}
else if (no == 2)
{
memcpy (parm->grip2, grip, 40);
parm->grip2valid = 1;
}
else if (no == 3)
{
memcpy (parm->grip3, grip, 40);
parm->grip3valid = 1;
}
}
}
}
return 0;
}
/* Call the agent to learn about a smartcard. */
gpg_error_t
scute_agent_learn (struct agent_card_info_s *info)
{
gpg_error_t err;
memset (info, 0, sizeof (*info));
err = assuan_transact (agent_ctx, "LEARN --send",
NULL, NULL, default_inq_cb,
NULL, learn_status_cb, info);
return err;
}
static gpg_error_t
geteventcounter_status_cb (void *opaque, const char *line)
{
int *result = opaque;
const char *keyword = line;
int keywordlen;
for (keywordlen=0; *line && !spacep (line); line++, keywordlen++)
;
while (spacep (line))
line++;
if (keywordlen == 12 && !memcmp (keyword, "EVENTCOUNTER", keywordlen))
{
static int any_count;
static unsigned int last_count;
unsigned int count;
if (sscanf (line, "%*u %*u %u ", &count) == 1)
{
if (any_count && last_count != count)
*result = 1;
any_count = 1;
last_count = count;
}
}
-
+
return 0;
}
static gpg_error_t
read_status_cb (void *opaque, const void *buffer, size_t length)
{
char *flag = opaque;
if (length == 0)
*flag = 'r';
else
*flag = *((char *) buffer);
return 0;
}
/* Check the agent status. This returns 0 if a token is present,
GPG_ERR_CARD_REMOVED if no token is present, and an error code
otherwise. */
gpg_error_t
scute_agent_check_status (void)
{
static char last_flag;
gpg_error_t err;
int any = 0;
char flag = '-';
/* First we look at the eventcounter to see if anything happened at
all. This is a low overhead function which won't even clutter a
gpg-agent log file. There is no need for error checking here. */
if (last_flag)
assuan_transact (agent_ctx, "GETEVENTCOUNTER",
NULL, NULL,
NULL, NULL,
geteventcounter_status_cb, &any);
if (any || !last_flag)
{
err = assuan_transact (agent_ctx, "SCD GETINFO status",
read_status_cb, &flag,
default_inq_cb, NULL,
NULL, NULL);
if (err)
return err;
last_flag = flag;
}
else
flag = last_flag;
if (flag == 'r')
return gpg_error (GPG_ERR_CARD_REMOVED);
return 0;
}
/* We only support RSA signatures up to 4096 bits. */
#define MAX_SIGNATURE_BITS 4096
/* Enough space to hold a 4096 bit RSA signature in an S-expression. */
#define MAX_SIGNATURE_LEN 640 /* FIXME: magic value */
struct signature
{
unsigned char data[MAX_SIGNATURE_LEN];
int len;
};
static gpg_error_t
pksign_cb (void *opaque, const void *buffer, size_t length)
{
struct signature *sig = opaque;
if (sig->len + length > MAX_SIGNATURE_LEN)
{
DEBUG (DBG_INFO, "maximum signature length exceeded");
return gpg_error (GPG_ERR_BAD_DATA);
}
memcpy (&sig->data[sig->len], buffer, length);
sig->len += length;
return 0;
}
/* Parse the result of an pksign operation which is a s-expression in
normal form that looks like (7:sig-val(3:rsa(1:s<LENGTH>:<DATA>))).
The raw result is stored in RESULT of size *LEN, and *LEN is
adjusted to the actual size. */
static gpg_error_t
pksign_parse_result (const struct signature *sig,
unsigned char *result, unsigned int *len)
{
gpg_error_t err;
const unsigned char *s = sig->data;
size_t n;
int depth;
if (*s++ != '(')
gpg_error (GPG_ERR_INV_SEXP);
n = snext (&s);
if (! n)
return gpg_error (GPG_ERR_INV_SEXP);
if (! smatch (&s, n, "sig-val"))
return gpg_error (GPG_ERR_UNKNOWN_SEXP);
if (*s++ != '(')
gpg_error (GPG_ERR_UNKNOWN_SEXP);
n = snext (&s);
if (! n)
return gpg_error (GPG_ERR_INV_SEXP);
if (! smatch (&s, n, "rsa"))
return gpg_error (GPG_ERR_UNKNOWN_SEXP);
if (*s++ != '(')
gpg_error (GPG_ERR_UNKNOWN_SEXP);
n = snext (&s);
if (! n)
return gpg_error (GPG_ERR_INV_SEXP);
if (! smatch (&s, n, "s"))
return gpg_error (GPG_ERR_UNKNOWN_SEXP);
n = snext (&s);
if (! n)
return gpg_error (GPG_ERR_INV_SEXP);
/* Remove nul byte prepended by gpg-agent. */
if (!*s && n > 1)
{
n -= 1;
s += 1;
}
if (*len < (unsigned int) n)
return gpg_error (GPG_ERR_INV_LENGTH);
*len = (unsigned int) n;
memcpy (result, s, n);
s += n;
depth = 3;
err = sskip (&s, &depth);
if (err)
return err;
if (s - sig->data != sig->len || depth != 0)
return gpg_error (GPG_ERR_INV_SEXP);
return 0;
}
/* Decodes the hash DATA of size LEN (if necessary). Returns a
pointer to the raw hash data in R_DATA, the size in R_LEN, and the
name of the hash function in R_HASH.
Prior to TLSv1.2, the hash function was the concatenation of MD5
and SHA1 applied to the data respectively, and no encoding was
applied. From TLSv1.2 on, the hash value is prefixed with an hash
identifier and encoded using ASN1.
FIXME: Reference. */
static gpg_error_t
decode_hash (const unsigned char *data, int len,
const unsigned char **r_data, size_t *r_len,
const char **r_hash)
{
static unsigned char rmd160_prefix[15] = /* Object ID is 1.3.36.3.2.1 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03,
0x02, 0x01, 0x05, 0x00, 0x04, 0x14 };
static unsigned char sha1_prefix[15] = /* (1.3.14.3.2.26) */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
static unsigned char sha224_prefix[19] = /* (2.16.840.1.101.3.4.2.4) */
{ 0x30, 0x2D, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48,
0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, 0x00, 0x04,
0x1C };
static unsigned char sha256_prefix[19] = /* (2.16.840.1.101.3.4.2.1) */
{ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05,
0x00, 0x04, 0x20 };
static unsigned char sha384_prefix[19] = /* (2.16.840.1.101.3.4.2.2) */
{ 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05,
0x00, 0x04, 0x30 };
static unsigned char sha512_prefix[19] = /* (2.16.840.1.101.3.4.2.3) */
{ 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05,
0x00, 0x04, 0x40 };
#define HANDLE(hash,hashlen) \
if (len == sizeof hash ## _prefix + (hashlen) \
&& !memcmp (data, hash ## _prefix, sizeof hash ## _prefix)) \
{ \
*r_data = data + sizeof hash ## _prefix; \
*r_len = hashlen; \
*r_hash = #hash; \
}
if (len == 36)
{
/* Prior to TLSv1.2, a combination of MD5 and SHA1 was used. */
*r_data = data;
*r_len = 36;
*r_hash = "tls-md5sha1";
}
/* TLSv1.2 encodes the hash value using ASN1. */
else HANDLE (sha1, 20)
else HANDLE (rmd160, 20)
else HANDLE (sha224, 28)
else HANDLE (sha256, 32)
else HANDLE (sha384, 48)
else HANDLE (sha512, 64)
else
return gpg_error (GPG_ERR_INV_ARG);
#undef HANDLE
return 0;
}
/* Call the agent to learn about a smartcard. */
gpg_error_t
scute_agent_sign (char *grip, unsigned char *data, int len,
unsigned char *sig_result, unsigned int *sig_len)
{
char cmd[150];
gpg_error_t err;
const char *hash;
const unsigned char *raw_data;
size_t raw_len;
#define MAX_DATA_LEN 64 /* Size of an SHA512 sum. */
unsigned char pretty_data[2 * MAX_DATA_LEN + 1];
int i;
struct signature sig;
sig.len = 0;
if (sig_len == NULL)
return gpg_error (GPG_ERR_INV_ARG);
err = decode_hash (data, len, &raw_data, &raw_len, &hash);
if (err)
return err;
if (sig_result == NULL)
{
*sig_len = raw_len;
return 0;
}
if (grip == NULL || sig_result == NULL)
return gpg_error (GPG_ERR_INV_ARG);
snprintf (cmd, sizeof (cmd), "SIGKEY %s", grip);
err = assuan_transact (agent_ctx, cmd, NULL, NULL, default_inq_cb,
NULL, NULL, NULL);
if (err)
return err;
for (i = 0; i < raw_len; i++)
snprintf (&pretty_data[2 * i], 3, "%02X", raw_data[i]);
pretty_data[2 * raw_len] = '\0';
snprintf (cmd, sizeof (cmd), "SETHASH --hash=%s %s", hash, pretty_data);
err = assuan_transact (agent_ctx, cmd, NULL, NULL, default_inq_cb,
NULL, NULL, NULL);
if (err)
return err;
err = assuan_transact (agent_ctx, "PKSIGN",
pksign_cb, &sig, default_inq_cb, NULL, NULL, NULL);
if (err)
return err;
err = pksign_parse_result (&sig, sig_result, sig_len);
return err;
}
/* Determine if FPR is trusted. */
gpg_error_t
scute_agent_is_trusted (char *fpr, bool *is_trusted)
{
gpg_error_t err;
bool trusted = false;
char cmd[150];
snprintf (cmd, sizeof (cmd), "ISTRUSTED %s", fpr);
err = assuan_transact (agent_ctx, cmd, NULL, NULL, default_inq_cb,
NULL, NULL, NULL);
if (err && gpg_err_code (err) != GPG_ERR_NOT_TRUSTED)
return err;
else if (!err)
trusted = true;
*is_trusted = trusted;
return 0;
}
#define GET_CERT_INIT_SIZE 2048
struct get_cert_s
{
unsigned char *cert_der;
int cert_der_len;
int cert_der_size;
};
gpg_error_t
get_cert_data_cb (void *opaque, const void *data, size_t data_len)
{
struct get_cert_s *cert_s = opaque;
int needed_size;
needed_size = cert_s->cert_der_len + data_len;
if (needed_size > cert_s->cert_der_size)
{
unsigned char *new_cert_der;
int new_cert_der_size = cert_s->cert_der_size;
if (new_cert_der_size == 0)
new_cert_der_size = GET_CERT_INIT_SIZE;
while (new_cert_der_size < needed_size)
new_cert_der_size *= 2;
if (cert_s->cert_der == NULL)
new_cert_der = malloc (new_cert_der_size);
else
new_cert_der = realloc (cert_s->cert_der, new_cert_der_size);
if (new_cert_der == NULL)
return gpg_error_from_syserror ();
cert_s->cert_der = new_cert_der;
cert_s->cert_der_size = new_cert_der_size;
}
memcpy (cert_s->cert_der + cert_s->cert_der_len, data, data_len);
cert_s->cert_der_len += data_len;
return 0;
}
/* Try to get certificate for key numer NO. */
gpg_error_t
scute_agent_get_cert (int no, struct cert *cert)
{
gpg_error_t err;
char cmd[150];
struct get_cert_s cert_s;
cert_s.cert_der = NULL;
cert_s.cert_der_len = 0;
cert_s.cert_der_size = 0;
snprintf (cmd, sizeof (cmd), "SCD READCERT OPENPGP.%i", no);
err = assuan_transact (agent_ctx, cmd, get_cert_data_cb, &cert_s,
NULL, NULL, NULL, NULL);
/* Just to be safe... */
if (!err && cert_s.cert_der_len <= 16)
{
DEBUG (DBG_INFO, "bad card certificate rejected");
err = gpg_error (GPG_ERR_BAD_CERT);
}
if (err)
{
if (cert_s.cert_der)
free (cert_s.cert_der);
return err;
}
DEBUG (DBG_INFO, "got certificate from card with length %i",
cert_s.cert_der_len);
cert->cert_der = cert_s.cert_der;
cert->cert_der_len = cert_s.cert_der_len;
return 0;
}
void
scute_agent_finalize (void)
{
if (!agent_ctx)
{
DEBUG (DBG_CRIT, "no GPG Agent connection established");
return;
}
DEBUG (DBG_INFO, "releasing agent context");
assuan_release (agent_ctx);
agent_ctx = NULL;
}
diff --git a/src/slots.c b/src/slots.c
index b1712aa..70d230c 100644
--- a/src/slots.c
+++ b/src/slots.c
@@ -1,1034 +1,1034 @@
/* slots.c - Slot management.
Copyright (C) 2006 g10 Code GmbH
This file is part of Scute.
-
+
Scute 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.
Scute 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 Scute; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, g10 Code GmbH gives permission
to link this library: with the Mozilla Foundation's code for
Mozilla (or with modified versions of it that use the same license
as the "Mozilla" code), and distribute the linked executables. You
must obey the GNU General Public License in all respects for all of
the code used other than "Mozilla". If you modify this file, you
may extend this exception to your version of the file, but you are
not obligated to do so. If you do not wish to do so, delete this
exception statement from your version. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include "cryptoki.h"
#include "table.h"
#include "error-mapping.h"
#include "slots.h"
#include "agent.h"
#include "support.h"
#include "gpgsm.h"
#include "debug.h"
/* A session is just a slot identifier with a per-slot session
identifier. */
/* Must be power of two. */
#define SLOT_MAX (1 << 15)
#define SESSION_SLOT_MASK (SLOT_MAX - 1)
#define SESSION_SLOT_SHIFT 16
#define SESSION_MAX (1 << SESSION_SLOT_SHIFT)
#define SESSION_ID_MASK (SESSION_MAX - 1)
/* Get slot ID from session. */
#define SESSION_SLOT(session) \
((session >> SESSION_SLOT_SHIFT) & SESSION_SLOT_MASK)
/* Get session ID from session. */
#define SESSION_ID(session) (session & SESSION_ID_MASK)
/* Because the slot is already 1-based, we can make the session 0-based. */
#define SESSION_BUILD_ID(slot, session) \
(((slot & SESSION_SLOT_MASK) << SESSION_SLOT_SHIFT) \
| (session & SESSION_ID_MASK))
/* We use one-based IDs. */
#define OBJECT_ID_TO_IDX(id) (id - 1)
#define OBJECT_IDX_TO_ID(idx) (idx + 1)
struct object
{
CK_ATTRIBUTE_PTR attributes;
CK_ULONG attributes_count;
};
/* A mechanism. */
struct mechanism
{
CK_MECHANISM_TYPE type;
CK_MECHANISM_INFO info;
};
/* We use one-based IDs. */
#define MECHANISM_ID_TO_IDX(id) (id - 1)
#define MECHANISM_IDX_TO_ID(idx) (idx + 1)
/* The session state. */
struct session
{
/* True iff read-write session. */
bool rw;
/* The list of objects for the current search. */
object_iterator_t *search_result;
/* The length of the list of objects for the current search. */
int search_result_len;
/* The signing key. */
CK_OBJECT_HANDLE signing_key;
};
/* The slot status. */
typedef enum
{
SLOT_STATUS_USED = 0,
SLOT_STATUS_DEAD = 1
} slot_status_t;
struct slot
{
/* The slot status. Starts out as 0 (pristine). */
slot_status_t status;
/* The slot login status. Starts out as 0 (public). */
slot_login_t login;
/* True iff a token is present. */
bool token_present;
/* The supported mechanisms. */
scute_table_t mechanisms;
/* The sessions. */
scute_table_t sessions;
/* The objects on the token. */
scute_table_t objects;
/* The info about the current token. */
struct agent_card_info_s info;
};
/* The slot table. */
static scute_table_t slots;
/* Deallocator for mechanisms. */
static void
mechanism_dealloc (void *data)
{
free (data);
}
/* Allocator for mechanisms. The hook must be a pointer to a CK_FLAGS
that should be a combination of CKF_SIGN and/or CKF_DECRYPT. */
static gpg_error_t
mechanism_alloc (void **data_r, void *hook)
{
struct mechanism *mechanism;
CK_FLAGS *flags = hook;
mechanism = calloc (1, sizeof (*mechanism));
if (mechanism == NULL)
return gpg_error_from_syserror ();
/* Set some default values. */
mechanism->type = CKM_RSA_PKCS;
mechanism->info.ulMinKeySize = 1024;
mechanism->info.ulMaxKeySize = 1024;
mechanism->info.flags = CKF_HW | (*flags);
*data_r = mechanism;
return 0;
}
static void
object_dealloc (void *data)
{
struct object *obj = data;
while (0 < obj->attributes_count--)
free (obj->attributes[obj->attributes_count].pValue);
free (obj->attributes);
free (obj);
}
/* Allocator for objects. The hook is currently unused. */
static gpg_error_t
object_alloc (void **data_r, void *hook)
{
struct object *object;
(void) hook;
object = calloc (1, sizeof (*object));
if (object == NULL)
return gpg_error_from_syserror ();
*data_r = object;
return 0;
}
static void
session_dealloc (void *data)
{
struct session *session = data;
if (session->search_result)
free (session->search_result);
free (session);
}
/* Allocator for sessions. The hook is currently unused. */
static gpg_error_t
session_alloc (void **data_r, void *hook)
{
struct session *session;
(void) hook;
session = calloc (1, sizeof (*session));
if (session == NULL)
return gpg_error_from_syserror ();
*data_r = session;
return 0;
}
/* Deallocator for slots. */
static void
slot_dealloc (void *data)
{
struct slot *slot = data;
scute_table_destroy (slot->sessions);
scute_table_destroy (slot->mechanisms);
scute_table_destroy (slot->objects);
free (slot);
}
/* Allocator for slots. The hook does not indicate anything at this
point. */
static gpg_error_t
slot_alloc (void **data_r, void *hook)
{
gpg_error_t err;
struct slot *slot;
int idx;
CK_FLAGS flags;
(void) hook;
slot = calloc (1, sizeof (*slot));
if (slot == NULL)
return gpg_error_from_syserror ();
err = scute_table_create (&slot->mechanisms, mechanism_alloc,
mechanism_dealloc);
if (err)
goto slot_alloc_out;
/* Register the signing mechanism. */
flags = CKF_SIGN;
err = scute_table_alloc (slot->mechanisms, &idx, NULL, &flags);
if (err)
goto slot_alloc_out;
err = scute_table_create (&slot->sessions, session_alloc, session_dealloc);
if (err)
goto slot_alloc_out;
err = scute_table_create (&slot->objects, object_alloc, object_dealloc);
if (err)
goto slot_alloc_out;
slot->status = SLOT_STATUS_USED;
slot->token_present = false;
slot->login = SLOT_LOGIN_PUBLIC;
*data_r = slot;
slot_alloc_out:
if (err)
slot_dealloc (slot);
return err;
}
/* Initialize the slot list. */
CK_RV
scute_slots_initialize (void)
{
gpg_error_t err;
int slot_idx;
err = scute_table_create (&slots, slot_alloc, slot_dealloc);
if (err)
return err;
/* Allocate a new slot for authentication. */
err = scute_table_alloc (slots, &slot_idx, NULL, NULL);
if (err)
scute_slots_finalize ();
/* FIXME: Allocate a new slot for signing and decryption of
email. */
return scute_gpg_err_to_ck (err);
}
void
scute_slots_finalize (void)
{
if (slots == NULL)
return;
/* This recursively releases all slots and any objects associated
with them. */
scute_table_destroy (slots);
slots = NULL;
}
/* Reset the slot SLOT after the token has been removed. */
static void
slot_reset (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
int oid;
/* This also resets the login state. */
slot_close_all_sessions (id);
oid = scute_table_first (slot->objects);
while (!scute_table_last (slot->objects, oid))
scute_table_dealloc (slot->objects, &oid);
assert (scute_table_used (slot->objects) == 0);
scute_agent_release_card_info (&slot->info);
slot->token_present = false;
}
static gpg_error_t
add_object (void *hook, CK_ATTRIBUTE_PTR attrp,
CK_ULONG attr_countp)
{
gpg_error_t err;
struct slot *slot = hook;
struct object *object;
unsigned int oidx;
void *objp;
err = scute_table_alloc (slot->objects, &oidx, &objp, NULL);
if (err)
return err;
object = objp;
object->attributes = attrp;
object->attributes_count = attr_countp;
return 0;
}
/* Initialize the slot after a token has been inserted. SLOT->info
must already be valid. */
static gpg_error_t
slot_init (slot_iterator_t id)
{
gpg_error_t err = 0;
struct slot *slot = scute_table_data (slots, id);
err = scute_gpgsm_get_cert (slot->info.grip3, 3, add_object, slot);
if (err)
goto init_out;
/* FIXME: Perform the rest of the initialization of the
token. */
slot->token_present = true;
init_out:
if (err)
slot_reset (id);
return err;
}
/* Update the slot SLOT. */
CK_RV
slots_update_slot (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
gpg_error_t err;
if (slot->token_present)
{
err = scute_agent_check_status ();
if (gpg_err_code (err) == GPG_ERR_CARD_REMOVED)
slot_reset (id);
else if (err)
return scute_gpg_err_to_ck (err);
else
return 0;
}
/* At this point, the card was or is removed, and we need to reopen
the session, if possible. */
err = scute_agent_learn (&slot->info);
/* First check if this is really an OpenPGP card. FIXME: Should
probably report the error in a better way. */
if (!err && (!slot->info.serialno
|| strncmp (slot->info.serialno, "D27600012401", 12)
|| strlen (slot->info.serialno) != 32))
{
DEBUG (DBG_INFO, "token not an OpenPGP card: %s", slot->info.serialno);
err = gpg_error (GPG_ERR_CARD_NOT_PRESENT);
scute_agent_release_card_info (&slot->info);
}
/* We also ignore card errors, because unusable cards should not
affect slots, and firefox is quite unhappy about returning errors
here. */
if (gpg_err_code (err) == GPG_ERR_CARD_REMOVED
|| gpg_err_code (err) == GPG_ERR_CARD_NOT_PRESENT
|| gpg_err_code (err) == GPG_ERR_CARD)
/* Nothing to do. */
err = 0;
else if (err == 0)
err = slot_init (id);
return scute_sys_to_ck (err);
}
/* Update the slot list by finding new devices. Please note that
Mozilla NSS currently assumes that the slot list never shrinks (see
TODO file for a discussion). This is the only function allowed to
manipulate the slot list. */
CK_RV
slots_update (void)
{
slot_iterator_t id = scute_table_first (slots);
while (!scute_table_last (slots, id))
{
CK_RV err;
err = slots_update_slot (id);
if (err)
- return err;
+ return err;
id = scute_table_next (slots, id);
}
return CKR_OK;
}
/* Begin iterating over the list of slots. */
CK_RV
slots_iterate_first (slot_iterator_t *slot)
{
*slot = scute_table_first (slots);
return CKR_OK;
}
/* Continue iterating over the list of slots. */
CK_RV
slots_iterate_next (slot_iterator_t *slot)
{
*slot = scute_table_next (slots, *slot);
return CKR_OK;
}
/* Return true iff the previous slot was the last one. */
bool
slots_iterate_last (slot_iterator_t *slot)
{
return scute_table_last (slots, *slot);
}
/* Acquire the slot for the slot ID ID. */
CK_RV
slots_lookup (CK_SLOT_ID id, slot_iterator_t *id_r)
{
struct slot *slot = scute_table_data (slots, id);
if (slot == NULL)
return CKR_SLOT_ID_INVALID;
*id_r = id;
return CKR_OK;
}
/* Return true iff a token is present in slot SLOT. */
bool
slot_token_present (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
return slot->token_present;
}
/* Return the token label. */
char *
slot_token_label (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
/* slots_update() makes sure this is valid. */
return slot->info.serialno;
}
/* Get the manufacturer of the token. */
char *
slot_token_manufacturer (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
unsigned int uval;
/* slots_update() makes sure this is valid. */
uval = xtoi_2 (slot->info.serialno + 16) * 256
+ xtoi_2 (slot->info.serialno + 18);
/* Note: Make sure that there is no colon or linefeed in the string. */
switch (uval)
{
case 0x0001:
return "PPC Card Systems";
case 0x0002:
return "Prism";
case 0x0003:
return "OpenFortress";
case 0x0004:
return "Wewid AB";
case 0x0005:
return "ZeitControl";
case 0x002A:
return "Magrathea";
case 0x0000:
case 0xffff:
return "test card";
default: return (uval & 0xff00) == 0xff00? "unmanaged S/N range":"unknown";
}
/* Not reached. */
}
/* Get the manufacturer of the token. */
char *
slot_token_application (slot_iterator_t id)
{
(void) id;
/* slots_update() makes sure this is correct. */
return "OpenPGP";
}
/* Get the serial number of the token. Must not write more than 16
bytes starting from DST. */
int
slot_token_serial (slot_iterator_t id, char *dst)
{
struct slot *slot = scute_table_data (slots, id);
int i;
/* slots_update() makes sure serialno is valid. */
for (i = 0; i < 8; i++)
dst[i] = slot->info.serialno[20 + i];
return 8;
}
/* Get the manufacturer of the token. */
void
slot_token_version (slot_iterator_t id, CK_BYTE *hw_major, CK_BYTE *hw_minor,
CK_BYTE *fw_major, CK_BYTE *fw_minor)
{
struct slot *slot = scute_table_data (slots, id);
/* slots_update() makes sure serialno is valid. */
*hw_major = xtoi_2 (slot->info.serialno + 12);
*hw_minor = xtoi_2 (slot->info.serialno + 14);
*fw_major = 0;
*fw_minor = 0;
}
/* Get the maximum and minimum pin length. */
void
slot_token_maxpinlen (slot_iterator_t id, CK_ULONG *max, CK_ULONG *min)
{
struct slot *slot = scute_table_data (slots, id);
/* In version 2 of the OpenPGP card, the second counter is for the
reset operation, so we only take the first counter. */
*max = slot->info.chvmaxlen[0];
/* FIXME: This is true at least for the user pin (CHV1 and CHV2). */
*min = 6;
}
/* Get the maximum and the actual pin count. */
void
slot_token_pincount (slot_iterator_t id, int *max, int *len)
{
struct slot *slot = scute_table_data (slots, id);
*max = 3;
/* In version 2 of the OpenPGP card, the second counter is for the
reset operation, so we only take the first counter. */
*len = slot->info.chvretry[0];
}
/* Return the ID of slot SLOT. */
CK_SLOT_ID
slot_get_id (slot_iterator_t slot)
{
return slot;
}
/* Mechanism management. */
/* Begin iterating over the list of mechanisms. */
CK_RV
mechanisms_iterate_first (slot_iterator_t id,
mechanism_iterator_t *mechanism)
{
struct slot *slot = scute_table_data (slots, id);
*mechanism = scute_table_first (slot->mechanisms);
return CKR_OK;
}
/* Continue iterating over the list of mechanisms. */
CK_RV
mechanisms_iterate_next (slot_iterator_t id, mechanism_iterator_t *mechanism)
{
struct slot *slot = scute_table_data (slots, id);
*mechanism = scute_table_next (slot->mechanisms, *mechanism);
return CKR_OK;
}
/* Return true iff the previous slot was the last one. */
bool
mechanisms_iterate_last (slot_iterator_t id, mechanism_iterator_t *mechanism)
{
struct slot *slot = scute_table_data (slots, id);
return scute_table_last (slot->mechanisms, *mechanism);
}
/* Acquire the mechanism TYPE for the slot id ID. */
CK_RV
mechanisms_lookup (slot_iterator_t id, mechanism_iterator_t *mid_r,
CK_MECHANISM_TYPE type)
{
struct slot *slot = scute_table_data (slots, id);
int mid = scute_table_first (slot->mechanisms);
while (!scute_table_last (slot->mechanisms, mid))
{
struct mechanism *mechanism = scute_table_data (slot->mechanisms, mid);
if (mechanism->type == type)
{
*mid_r = mid;
return CKR_OK;
}
mid = scute_table_next (slot->mechanisms, mid);
}
return CKR_MECHANISM_INVALID;
}
/* Return the type of mechanism MID in slot ID. */
CK_MECHANISM_TYPE
mechanism_get_type (slot_iterator_t id, mechanism_iterator_t mid)
{
struct slot *slot = scute_table_data (slots, id);
struct mechanism *mechanism = scute_table_data (slot->mechanisms, mid);
return mechanism->type;
}
/* Return the info of mechanism MID. */
CK_MECHANISM_INFO_PTR
mechanism_get_info (slot_iterator_t id, mechanism_iterator_t mid)
{
struct slot *slot = scute_table_data (slots, id);
struct mechanism *mechanism = scute_table_data (slot->mechanisms, mid);
return &mechanism->info;
}
/* Session management. */
/* Create a new session. */
CK_RV
slot_create_session (slot_iterator_t id, session_iterator_t *session,
bool rw)
{
int err;
struct slot *slot = scute_table_data (slots, id);
unsigned int tsid;
void *rawp;
struct session *session_p;
assert (slot);
if (scute_table_used (slot->sessions) == SESSION_MAX)
return CKR_SESSION_COUNT;
if (slot->login == SLOT_LOGIN_SO && !rw)
return CKR_SESSION_READ_WRITE_SO_EXISTS;
err = scute_table_alloc (slot->sessions, &tsid, &rawp, NULL);
if (err)
return scute_sys_to_ck (err);
session_p = rawp;
session_p->rw = rw;
session_p->search_result = NULL;
session_p->search_result_len = 0;
session_p->signing_key = CK_INVALID_HANDLE;
*session = SESSION_BUILD_ID (id, tsid);
return CKR_OK;
}
/* Look up session. */
CK_RV
slots_lookup_session (CK_SESSION_HANDLE sid, slot_iterator_t *id,
session_iterator_t *session_id)
{
CK_RV err;
unsigned int idx = SESSION_SLOT (sid);
unsigned session_idx = SESSION_ID (sid);
struct slot *slot;
/* Verify the slot. */
err = slots_lookup (SESSION_SLOT (sid), id);
if (err)
return err;
*session_id = session_idx;
/* Verify the session. */
slot = scute_table_data (slots, idx);
if (!scute_table_data (slot->sessions, session_idx))
return CKR_SESSION_HANDLE_INVALID;
return 0;
}
/* Close the session. */
CK_RV
slot_close_session (slot_iterator_t id, session_iterator_t sid)
{
struct slot *slot = scute_table_data (slots, id);
scute_table_dealloc (slot->sessions, &sid);
/* At last session closed, return to public sessions. */
if (!scute_table_used (slot->sessions))
slot->login = SLOT_LOGIN_PUBLIC;
return CKR_OK;
}
/* Close all sessions. */
CK_RV
slot_close_all_sessions (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
int sid = scute_table_first (slot->sessions);
while (!scute_table_last (slot->sessions, sid))
{
slot_close_session (id, sid);
sid = scute_table_next (slot->sessions, sid);
}
assert (scute_table_used (slot->sessions) == 0);
return CKR_OK;
}
/* Get the RW flag from the session SID in slot ID. */
bool
session_get_rw (slot_iterator_t id, session_iterator_t sid)
{
struct slot *slot = scute_table_data (slots, id);
struct session *session = scute_table_data (slot->sessions, sid);
return session->rw;
}
/* Get the login state from the slot ID. */
slot_login_t
slot_get_status (slot_iterator_t id)
{
struct slot *slot = scute_table_data (slots, id);
return slot->status;
}
/* Object management. */
/* Begin iterating over the list of objects. */
CK_RV
objects_iterate_first (slot_iterator_t id, object_iterator_t *object)
{
struct slot *slot = scute_table_data (slots, id);
*object = scute_table_first (slot->objects);
return CKR_OK;
}
/* Continue iterating over the list of objects. */
CK_RV
objects_iterate_next (slot_iterator_t id, object_iterator_t *object)
{
struct slot *slot = scute_table_data (slots, id);
*object = scute_table_next (slot->objects, *object);
return CKR_OK;
}
/* Return true iff the previous slot was the last one. */
bool
objects_iterate_last (slot_iterator_t id, object_iterator_t *object)
{
struct slot *slot = scute_table_data (slots, id);
return scute_table_last (slot->objects, *object);
}
/* Return the max. number of objects in the slot. May overcount
somewhat. */
CK_RV
slot_get_object_count (slot_iterator_t id, int *nr)
{
struct slot *slot = scute_table_data (slots, id);
*nr = scute_table_used (slot->objects);
return CKR_OK;
}
/* Get the object information for object OBJECT_ID in slot ID. */
CK_RV
slot_get_object (slot_iterator_t id, object_iterator_t oid,
CK_ATTRIBUTE_PTR *obj, CK_ULONG *obj_count)
{
struct slot *slot = scute_table_data (slots, id);
struct object *object = scute_table_data (slot->objects, oid);
if (!object)
return CKR_OBJECT_HANDLE_INVALID;
*obj = object->attributes;
*obj_count = object->attributes_count;
return 0;
}
/* Set the result of a search for session SID in slot ID to
SEARCH_RESULT and SEARCH_RESULT_LEN. */
CK_RV
session_set_search_result (slot_iterator_t id, session_iterator_t sid,
object_iterator_t *search_result,
int search_result_len)
{
struct slot *slot = scute_table_data (slots, id);
struct session *session = scute_table_data (slot->sessions, sid);
if (session->search_result && session->search_result != search_result)
free (session->search_result);
session->search_result = search_result;
session->search_result_len = search_result_len;
return 0;
}
/* Get the stored search result for the session SID in slot ID. */
CK_RV
session_get_search_result (slot_iterator_t id, session_iterator_t sid,
object_iterator_t **search_result,
int *search_result_len)
{
struct slot *slot = scute_table_data (slots, id);
struct session *session = scute_table_data (slot->sessions, sid);
assert (search_result);
assert (search_result_len);
*search_result = session->search_result;
*search_result_len = session->search_result_len;
return 0;
}
/* Set the signing key for session SID in slot ID to KEY. */
CK_RV
session_set_signing_key (slot_iterator_t id, session_iterator_t sid,
object_iterator_t key)
{
struct slot *slot = scute_table_data (slots, id);
struct session *session = scute_table_data (slot->sessions, sid);
CK_RV err;
CK_ATTRIBUTE_PTR attr;
CK_ULONG attr_count;
CK_OBJECT_CLASS key_class = CKO_PRIVATE_KEY;
err = slot_get_object (id, key, &attr, &attr_count);
if (err)
return err;
while (attr_count-- > 0)
if (attr->type == CKA_CLASS)
break;
if (attr_count == (CK_ULONG) -1)
return CKR_KEY_HANDLE_INVALID;
if (attr->ulValueLen != sizeof (key_class)
|| memcmp (attr->pValue, &key_class, sizeof (key_class)))
return CKR_KEY_HANDLE_INVALID;
/* It's the private RSA key object. */
session->signing_key = key;
return 0;
}
/* FIXME: The dscription is wrong:
Set the signing key for session SID in slot ID to KEY. */
CK_RV
session_sign (slot_iterator_t id, session_iterator_t sid,
CK_BYTE_PTR pData, CK_ULONG ulDataLen,
CK_BYTE_PTR pSignature, CK_ULONG_PTR pulSignatureLen)
{
struct slot *slot = scute_table_data (slots, id);
struct session *session = scute_table_data (slot->sessions, sid);
gpg_error_t err;
unsigned int sig_len;
/* FIXME: Who cares if they called sign init correctly. Should
check the signing_key object. */
if (pSignature == NULL_PTR)
{
err = scute_agent_sign (NULL, NULL, 0, NULL, &sig_len);
if (err)
return scute_gpg_err_to_ck (err);
*pulSignatureLen = sig_len;
return 0;
}
sig_len = *pulSignatureLen;
err = scute_agent_sign (slot->info.grip3, pData, ulDataLen,
pSignature, &sig_len);
/* FIXME: Oh well. */
if (gpg_err_code (err) == GPG_ERR_INV_ARG)
return CKR_BUFFER_TOO_SMALL;
-
+
return scute_gpg_err_to_ck (err);
}

File Metadata

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Expires
Sat, Dec 6, 10:57 PM (1 d, 15 h)
Storage Engine
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Storage Format
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Storage Handle
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