static
int
server_socket_create (void) {
struct sockaddr_un serv_addr;
int fd = -1;
int rc = -1;
if ((rc = assuan_sock_init()) != 0) {
common_log (LOG_ERROR,"Cannot init socket %s", gpg_strerror (rc));
goto cleanup;
}
memset (&serv_addr, 0, sizeof (serv_addr));
serv_addr.sun_family = AF_UNIX;
assert (strlen (s_socket_name) + 1 < sizeof (serv_addr.sun_path));
strcpy (serv_addr.sun_path, s_socket_name);
if ((fd = assuan_sock_new (AF_UNIX, SOCK_STREAM, 0)) == -1) {
common_log (LOG_ERROR, "Cannot create socket", s_socket_name);
goto cleanup;
}
if ((rc = assuan_sock_bind (fd, (struct sockaddr*)&serv_addr, sizeof (serv_addr))) == -1) {
common_log (LOG_ERROR, "Cannot bing to socket '%s'", s_socket_name);
goto cleanup;
}
if ((rc = listen (fd, SOMAXCONN)) == -1) {
common_log (LOG_ERROR, "Cannot listen to socket '%s'", s_socket_name);
goto cleanup;
}
rc = 0;
cleanup:
if (rc != 0) {
server_socket_close (fd);
common_log (LOG_FATAL, "Cannot handle socket");
}
common_log (LOG_INFO, "Listening to socket '%s'", s_socket_name);
return fd;
}
int
main (int argc, char **argv )
{
ARGPARSE_ARGS pargs;
int orig_argc;
gpg_error_t err;
int may_coredump;
char **orig_argv;
FILE *configfp = NULL;
char *configname = NULL;
const char *shell;
unsigned int configlineno;
int parse_debug = 0;
const char *debug_level = NULL;
int default_config =1;
int greeting = 0;
int nogreeting = 0;
int multi_server = 0;
int is_daemon = 0;
int nodetach = 0;
int csh_style = 0;
char *logfile = NULL;
int debug_wait = 0;
int gpgconf_list = 0;
const char *config_filename = NULL;
int allow_coredump = 0;
int standard_socket = 0;
struct assuan_malloc_hooks malloc_hooks;
set_strusage (my_strusage);
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
/* Please note that we may running SUID(ROOT), so be very CAREFUL
when adding any stuff between here and the call to INIT_SECMEM()
somewhere after the option parsing */
log_set_prefix ("scdaemon", 1|4);
/* Make sure that our subsystems are ready. */
i18n_init ();
init_common_subsystems (&argc, &argv);
/* Libgcrypt requires us to register the threading model first.
Note that this will also do the pth_init. */
gcry_threads_pth.init = fixed_gcry_pth_init;
err = gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pth);
if (err)
{
log_fatal ("can't register GNU Pth with Libgcrypt: %s\n",
gpg_strerror (err));
}
/* Check that the libraries are suitable. Do it here because
the option parsing may need services of the library */
if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
{
log_fatal (_("%s is too old (need %s, have %s)\n"), "libgcrypt",
NEED_LIBGCRYPT_VERSION, gcry_check_version (NULL) );
}
ksba_set_malloc_hooks (gcry_malloc, gcry_realloc, gcry_free);
malloc_hooks.malloc = gcry_malloc;
malloc_hooks.realloc = gcry_realloc;
malloc_hooks.free = gcry_free;
assuan_set_malloc_hooks (&malloc_hooks);
assuan_set_gpg_err_source (GPG_ERR_SOURCE_DEFAULT);
assuan_set_system_hooks (ASSUAN_SYSTEM_PTH);
assuan_sock_init ();
setup_libassuan_logging (&opt.debug);
setup_libgcrypt_logging ();
gcry_control (GCRYCTL_USE_SECURE_RNDPOOL);
may_coredump = disable_core_dumps ();
/* Set default options. */
opt.allow_admin = 1;
opt.pcsc_driver = DEFAULT_PCSC_DRIVER;
#ifdef HAVE_W32_SYSTEM
standard_socket = 1; /* Under Windows we always use a standard
socket. */
#endif
shell = getenv ("SHELL");
if (shell && strlen (shell) >= 3 && !strcmp (shell+strlen (shell)-3, "csh") )
csh_style = 1;
opt.homedir = default_homedir ();
/* Check whether we have a config file on the commandline */
orig_argc = argc;
orig_argv = argv;
pargs.argc = &argc;
pargs.argv = &argv;
pargs.flags= 1|(1<<6); /* do not remove the args, ignore version */
while (arg_parse( &pargs, opts))
{
if (pargs.r_opt == oDebug || pargs.r_opt == oDebugAll)
parse_debug++;
else if (pargs.r_opt == oOptions)
{ /* yes there is one, so we do not try the default one, but
read the option file when it is encountered at the
commandline */
default_config = 0;
}
else if (pargs.r_opt == oNoOptions)
default_config = 0; /* --no-options */
else if (pargs.r_opt == oHomedir)
opt.homedir = pargs.r.ret_str;
}
/* initialize the secure memory. */
gcry_control (GCRYCTL_INIT_SECMEM, 16384, 0);
maybe_setuid = 0;
/*
Now we are working under our real uid
*/
if (default_config)
configname = make_filename (opt.homedir, "scdaemon.conf", NULL );
argc = orig_argc;
argv = orig_argv;
pargs.argc = &argc;
pargs.argv = &argv;
pargs.flags= 1; /* do not remove the args */
next_pass:
if (configname)
{
configlineno = 0;
configfp = fopen (configname, "r");
if (!configfp)
{
if (default_config)
{
if( parse_debug )
log_info (_("NOTE: no default option file `%s'\n"),
configname );
}
else
{
log_error (_("option file `%s': %s\n"),
configname, strerror(errno) );
exit(2);
}
xfree (configname);
configname = NULL;
}
if (parse_debug && configname )
log_info (_("reading options from `%s'\n"), configname );
default_config = 0;
}
while (optfile_parse( configfp, configname, &configlineno, &pargs, opts) )
{
switch (pargs.r_opt)
{
case aGPGConfList: gpgconf_list = 1; break;
case aGPGConfTest: gpgconf_list = 2; break;
case oQuiet: opt.quiet = 1; break;
case oVerbose: opt.verbose++; break;
case oBatch: opt.batch=1; break;
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 oDebugWait: debug_wait = pargs.r.ret_int; break;
case oDebugAllowCoreDump:
enable_core_dumps ();
allow_coredump = 1;
break;
case oDebugCCIDDriver:
#ifdef HAVE_LIBUSB
ccid_set_debug_level (ccid_set_debug_level (-1)+1);
#endif /*HAVE_LIBUSB*/
break;
case oDebugDisableTicker: ticker_disabled = 1; break;
case oDebugLogTid:
log_set_pid_suffix_cb (tid_log_callback);
break;
case oOptions:
/* config files may not be nested (silently ignore them) */
if (!configfp)
{
xfree(configname);
configname = xstrdup(pargs.r.ret_str);
goto next_pass;
}
break;
case oNoGreeting: nogreeting = 1; break;
case oNoVerbose: opt.verbose = 0; break;
case oNoOptions: break; /* no-options */
case oHomedir: opt.homedir = pargs.r.ret_str; break;
case oNoDetach: nodetach = 1; break;
case oLogFile: logfile = pargs.r.ret_str; break;
case oCsh: csh_style = 1; break;
case oSh: csh_style = 0; break;
case oServer: pipe_server = 1; break;
case oMultiServer: pipe_server = 1; multi_server = 1; break;
case oDaemon: is_daemon = 1; break;
case oReaderPort: opt.reader_port = pargs.r.ret_str; break;
case octapiDriver: opt.ctapi_driver = pargs.r.ret_str; break;
case opcscDriver: opt.pcsc_driver = pargs.r.ret_str; break;
case oDisableCCID: opt.disable_ccid = 1; break;
case oDisableOpenSC: break;
case oDisableKeypad: opt.disable_keypad = 1; break;
case oAllowAdmin: /* Dummy because allow is now the default. */
break;
case oDenyAdmin: opt.allow_admin = 0; break;
case oCardTimeout: opt.card_timeout = pargs.r.ret_ulong; break;
case oDisableApplication:
add_to_strlist (&opt.disabled_applications, pargs.r.ret_str);
break;
default:
pargs.err = configfp? ARGPARSE_PRINT_WARNING:ARGPARSE_PRINT_ERROR;
break;
}
}
if (configfp)
{
fclose( configfp );
configfp = NULL;
/* Keep a copy of the config name for use by --gpgconf-list. */
config_filename = configname;
configname = NULL;
goto next_pass;
}
xfree (configname);
configname = NULL;
if (log_get_errorcount(0))
exit(2);
if (nogreeting )
greeting = 0;
if (greeting)
{
es_fprintf (es_stderr, "%s %s; %s\n",
strusage(11), strusage(13), strusage(14) );
es_fprintf (es_stderr, "%s\n", strusage(15) );
}
#ifdef IS_DEVELOPMENT_VERSION
log_info ("NOTE: this is a development version!\n");
#endif
if (atexit (cleanup))
{
log_error ("atexit failed\n");
cleanup ();
exit (1);
}
set_debug (debug_level);
initialize_module_command ();
if (gpgconf_list == 2)
scd_exit (0);
if (gpgconf_list)
{
/* List options and default values in the GPG Conf format. */
char *filename = NULL;
char *filename_esc;
if (config_filename)
filename = xstrdup (config_filename);
else
filename = make_filename (opt.homedir, "scdaemon.conf", NULL);
filename_esc = percent_escape (filename, NULL);
es_printf ("gpgconf-scdaemon.conf:%lu:\"%s\n",
GC_OPT_FLAG_DEFAULT, filename_esc);
xfree (filename_esc);
xfree (filename);
es_printf ("verbose:%lu:\n"
"quiet:%lu:\n"
"debug-level:%lu:\"none:\n"
"log-file:%lu:\n",
GC_OPT_FLAG_NONE,
GC_OPT_FLAG_NONE,
GC_OPT_FLAG_DEFAULT,
GC_OPT_FLAG_NONE );
es_printf ("reader-port:%lu:\n", GC_OPT_FLAG_NONE );
es_printf ("ctapi-driver:%lu:\n", GC_OPT_FLAG_NONE );
es_printf ("pcsc-driver:%lu:\"%s:\n",
GC_OPT_FLAG_DEFAULT, DEFAULT_PCSC_DRIVER );
#ifdef HAVE_LIBUSB
es_printf ("disable-ccid:%lu:\n", GC_OPT_FLAG_NONE );
#endif
es_printf ("deny-admin:%lu:\n", GC_OPT_FLAG_NONE );
es_printf ("disable-keypad:%lu:\n", GC_OPT_FLAG_NONE );
es_printf ("card-timeout:%lu:%d:\n", GC_OPT_FLAG_DEFAULT, 0);
scd_exit (0);
}
/* Now start with logging to a file if this is desired. */
if (logfile)
{
log_set_file (logfile);
log_set_prefix (NULL, 1|2|4);
}
if (debug_wait && pipe_server)
{
log_debug ("waiting for debugger - my pid is %u .....\n",
(unsigned int)getpid());
gnupg_sleep (debug_wait);
log_debug ("... okay\n");
}
if (pipe_server)
{
/* This is the simple pipe based server */
ctrl_t ctrl;
pth_attr_t tattr;
int fd = -1;
#ifndef HAVE_W32_SYSTEM
{
struct sigaction sa;
sa.sa_handler = SIG_IGN;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sigaction (SIGPIPE, &sa, NULL);
}
#endif
/* If --debug-allow-core-dump has been given we also need to
switch the working directory to a place where we can actually
write. */
if (allow_coredump)
{
if (chdir("/tmp"))
log_debug ("chdir to `/tmp' failed: %s\n", strerror (errno));
else
log_debug ("changed working directory to `/tmp'\n");
}
/* In multi server mode we need to listen on an additional
socket. Create that socket now before starting the handler
for the pipe connection. This allows that handler to send
back the name of that socket. */
if (multi_server)
{
socket_name = create_socket_name (standard_socket,
"S.scdaemon",
"gpg-XXXXXX/S.scdaemon");
fd = FD2INT(create_server_socket (standard_socket,
socket_name, &socket_nonce));
}
tattr = pth_attr_new();
pth_attr_set (tattr, PTH_ATTR_JOINABLE, 0);
pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 512*1024);
pth_attr_set (tattr, PTH_ATTR_NAME, "pipe-connection");
ctrl = xtrycalloc (1, sizeof *ctrl);
if ( !ctrl )
{
log_error ("error allocating connection control data: %s\n",
strerror (errno) );
scd_exit (2);
}
ctrl->thread_startup.fd = GNUPG_INVALID_FD;
if ( !pth_spawn (tattr, start_connection_thread, ctrl) )
{
log_error ("error spawning pipe connection handler: %s\n",
strerror (errno) );
xfree (ctrl);
scd_exit (2);
}
/* We run handle_connection to wait for the shutdown signal and
to run the ticker stuff. */
handle_connections (fd);
if (fd != -1)
close (fd);
}
else if (!is_daemon)
{
log_info (_("please use the option `--daemon'"
" to run the program in the background\n"));
}
else
{ /* Regular server mode */
int fd;
#ifndef HAVE_W32_SYSTEM
pid_t pid;
int i;
#endif
/* Create the socket. */
socket_name = create_socket_name (standard_socket,
"S.scdaemon",
"gpg-XXXXXX/S.scdaemon");
fd = FD2INT (create_server_socket (standard_socket,
socket_name, &socket_nonce));
fflush (NULL);
#ifndef HAVE_W32_SYSTEM
pid = fork ();
if (pid == (pid_t)-1)
{
log_fatal ("fork failed: %s\n", strerror (errno) );
exit (1);
}
else if (pid)
{ /* we are the parent */
char *infostr;
close (fd);
/* create the info string: <name>:<pid>:<protocol_version> */
if (estream_asprintf (&infostr, "SCDAEMON_INFO=%s:%lu:1",
socket_name, (ulong) pid) < 0)
{
log_error ("out of core\n");
kill (pid, SIGTERM);
exit (1);
}
*socket_name = 0; /* don't let cleanup() remove the socket -
the child should do this from now on */
if (argc)
{ /* run the program given on the commandline */
if (putenv (infostr))
{
log_error ("failed to set environment: %s\n",
strerror (errno) );
kill (pid, SIGTERM );
exit (1);
}
execvp (argv[0], argv);
log_error ("failed to run the command: %s\n", strerror (errno));
kill (pid, SIGTERM);
exit (1);
}
else
{
/* Print the environment string, so that the caller can use
shell's eval to set it */
if (csh_style)
{
*strchr (infostr, '=') = ' ';
es_printf ( "setenv %s\n", infostr);
}
else
{
es_printf ( "%s; export SCDAEMON_INFO;\n", infostr);
}
xfree (infostr);
exit (0);
}
/* NOTREACHED */
} /* end parent */
/* This is the child. */
/* Detach from tty and put process into a new session. */
if (!nodetach )
{
/* Close stdin, stdout and stderr unless it is the log stream. */
for (i=0; i <= 2; i++)
{
if ( log_test_fd (i) && i != fd)
close (i);
}
if (setsid() == -1)
{
log_error ("setsid() failed: %s\n", strerror(errno) );
cleanup ();
exit (1);
}
}
{
struct sigaction sa;
sa.sa_handler = SIG_IGN;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sigaction (SIGPIPE, &sa, NULL);
}
if (chdir("/"))
{
log_error ("chdir to / failed: %s\n", strerror (errno));
exit (1);
}
#endif /*!HAVE_W32_SYSTEM*/
handle_connections (fd);
close (fd);
}
return 0;
}
int
main (int argc, char **argv)
{
int last_argc = -1;
gpg_error_t err;
int rc; parsed_uri_t uri;
uri_tuple_t r;
http_t hd;
int c;
unsigned int my_http_flags = 0;
int no_out = 0;
int tls_dbg = 0;
int no_crl = 0;
const char *cafile = NULL;
http_session_t session = NULL;
unsigned int timeout = 0;
gpgrt_init ();
log_set_prefix (PGM, GPGRT_LOG_WITH_PREFIX | GPGRT_LOG_WITH_PID);
if (argc)
{ argc--; argv++; }
while (argc && last_argc != argc )
{
last_argc = argc;
if (!strcmp (*argv, "--"))
{
argc--; argv++;
break;
}
else if (!strcmp (*argv, "--help"))
{
fputs ("usage: " PGM " URL\n"
"Options:\n"
" --verbose print timings etc.\n"
" --debug flyswatter\n"
" --tls-debug N use TLS debug level N\n"
" --cacert FNAME expect CA certificate in file FNAME\n"
" --timeout MS timeout for connect in MS\n"
" --no-verify do not verify the certificate\n"
" --force-tls use HTTP_FLAG_FORCE_TLS\n"
" --force-tor use HTTP_FLAG_FORCE_TOR\n"
" --no-out do not print the content\n"
" --no-crl do not consuilt a CRL\n",
stdout);
exit (0);
}
else if (!strcmp (*argv, "--verbose"))
{
verbose++;
argc--; argv++;
}
else if (!strcmp (*argv, "--debug"))
{
verbose += 2;
debug++;
argc--; argv++;
}
else if (!strcmp (*argv, "--tls-debug"))
{
argc--; argv++;
if (argc)
{
tls_dbg = atoi (*argv);
argc--; argv++;
}
}
else if (!strcmp (*argv, "--cacert"))
{
argc--; argv++;
if (argc)
{
cafile = *argv;
argc--; argv++;
}
}
else if (!strcmp (*argv, "--timeout"))
{
argc--; argv++;
if (argc)
{
timeout = strtoul (*argv, NULL, 10);
argc--; argv++;
}
}
else if (!strcmp (*argv, "--no-verify"))
{
no_verify = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--force-tls"))
{
my_http_flags |= HTTP_FLAG_FORCE_TLS;
argc--; argv++;
}
else if (!strcmp (*argv, "--force-tor"))
{
my_http_flags |= HTTP_FLAG_FORCE_TOR;
argc--; argv++;
}
else if (!strcmp (*argv, "--no-out"))
{
no_out = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--no-crl"))
{
no_crl = 1;
argc--; argv++;
}
else if (!strncmp (*argv, "--", 2))
{
fprintf (stderr, PGM ": unknown option '%s'\n", *argv);
exit (1);
}
}
if (argc != 1)
{
fprintf (stderr, PGM ": no or too many URLS given\n");
exit (1);
}
if (!cafile)
cafile = prepend_srcdir ("tls-ca.pem");
if (verbose)
my_http_flags |= HTTP_FLAG_LOG_RESP;
if (verbose || debug)
http_set_verbose (verbose, debug);
/* http.c makes use of the assuan socket wrapper. */
assuan_sock_init ();
if ((my_http_flags & HTTP_FLAG_FORCE_TOR))
{
enable_dns_tormode (1);
if (assuan_sock_set_flag (ASSUAN_INVALID_FD, "tor-mode", 1))
{
log_error ("error enabling Tor mode: %s\n", strerror (errno));
log_info ("(is your Libassuan recent enough?)\n");
}
}
#if HTTP_USE_NTBTLS
log_info ("new session.\n");
err = http_session_new (&session, NULL,
((no_crl? HTTP_FLAG_NO_CRL : 0)
| HTTP_FLAG_TRUST_DEF),
my_http_tls_verify_cb, NULL);
if (err)
log_error ("http_session_new failed: %s\n", gpg_strerror (err));
ntbtls_set_debug (tls_dbg, NULL, NULL);
#elif HTTP_USE_GNUTLS
rc = gnutls_global_init ();
if (rc)
log_error ("gnutls_global_init failed: %s\n", gnutls_strerror (rc));
http_register_tls_callback (verify_callback);
http_register_tls_ca (cafile);
err = http_session_new (&session, NULL,
((no_crl? HTTP_FLAG_NO_CRL : 0)
| HTTP_FLAG_TRUST_DEF),
NULL, NULL);
if (err)
log_error ("http_session_new failed: %s\n", gpg_strerror (err));
/* rc = gnutls_dh_params_init(&dh_params); */
/* if (rc) */
/* log_error ("gnutls_dh_params_init failed: %s\n", gnutls_strerror (rc)); */
/* read_dh_params ("dh_param.pem"); */
/* rc = gnutls_certificate_set_x509_trust_file */
/* (certcred, "ca.pem", GNUTLS_X509_FMT_PEM); */
/* if (rc) */
/* log_error ("gnutls_certificate_set_x509_trust_file failed: %s\n", */
/* gnutls_strerror (rc)); */
/* gnutls_certificate_set_dh_params (certcred, dh_params); */
gnutls_global_set_log_function (my_gnutls_log);
if (tls_dbg)
gnutls_global_set_log_level (tls_dbg);
#else
(void)err;
(void)tls_dbg;
(void)no_crl;
#endif /*HTTP_USE_GNUTLS*/
rc = http_parse_uri (&uri, *argv, 1);
if (rc)
{
log_error ("'%s': %s\n", *argv, gpg_strerror (rc));
return 1;
}
printf ("Scheme: %s\n", uri->scheme);
if (uri->opaque)
printf ("Value : %s\n", uri->path);
else
{
printf ("Auth : %s\n", uri->auth? uri->auth:"[none]");
printf ("Host : %s\n", uri->host);
printf ("Port : %u\n", uri->port);
printf ("Path : %s\n", uri->path);
for (r = uri->params; r; r = r->next)
{
printf ("Params: %s", r->name);
if (!r->no_value)
{
printf ("=%s", r->value);
if (strlen (r->value) != r->valuelen)
printf (" [real length=%d]", (int) r->valuelen);
}
putchar ('\n');
}
for (r = uri->query; r; r = r->next)
{
printf ("Query : %s", r->name);
if (!r->no_value)
{
printf ("=%s", r->value);
if (strlen (r->value) != r->valuelen)
printf (" [real length=%d]", (int) r->valuelen);
}
putchar ('\n');
}
printf ("Flags :%s%s%s%s\n",
uri->is_http? " http":"",
uri->opaque? " opaque":"",
uri->v6lit? " v6lit":"",
uri->onion? " onion":"");
printf ("TLS : %s\n",
uri->use_tls? "yes":
(my_http_flags&HTTP_FLAG_FORCE_TLS)? "forced" : "no");
printf ("Tor : %s\n",
(my_http_flags&HTTP_FLAG_FORCE_TOR)? "yes" : "no");
}
fflush (stdout);
http_release_parsed_uri (uri);
uri = NULL;
if (session)
http_session_set_timeout (session, timeout);
rc = http_open_document (NULL, &hd, *argv, NULL, my_http_flags,
NULL, session, NULL, NULL);
if (rc)
{
log_error ("can't get '%s': %s\n", *argv, gpg_strerror (rc));
return 1;
}
log_info ("open_http_document succeeded; status=%u\n",
http_get_status_code (hd));
{
const char **names;
int i;
names = http_get_header_names (hd);
if (!names)
log_fatal ("http_get_header_names failed: %s\n",
gpg_strerror (gpg_error_from_syserror ()));
for (i = 0; names[i]; i++)
printf ("HDR: %s: %s\n", names[i], http_get_header (hd, names[i]));
xfree (names);
}
fflush (stdout);
switch (http_get_status_code (hd))
{
case 200:
case 400:
case 401:
case 403:
case 404:
{
unsigned long count = 0;
while ((c = es_getc (http_get_read_ptr (hd))) != EOF)
{
count++;
if (!no_out)
putchar (c);
}
log_info ("Received bytes: %lu\n", count);
}
break;
case 301:
case 302:
case 307:
log_info ("Redirected to: %s\n", http_get_header (hd, "Location"));
break;
}
http_close (hd, 0);
http_session_release (session);
#ifdef HTTP_USE_GNUTLS
gnutls_global_deinit ();
#endif /*HTTP_USE_GNUTLS*/
return 0;
}
