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1028 lines
26 KiB
C
1028 lines
26 KiB
C
/* dirmngr-client.c - A client for the dirmngr daemon
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* Copyright (C) 2004, 2007 g10 Code GmbH
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* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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*
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* This file is part of DirMngr.
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*
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* DirMngr is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* DirMngr is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <gpg-error.h>
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#include <assuan.h>
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#define JNLIB_NEED_LOG_LOGV
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#include "../common/logging.h"
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#include "../common/argparse.h"
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#include "../common/stringhelp.h"
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#include "../common/mischelp.h"
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#include "../common/strlist.h"
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#include "i18n.h"
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#include "util.h"
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/* Constants for the options. */
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enum
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{
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oQuiet = 'q',
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oVerbose = 'v',
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oLocal = 'l',
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oUrl = 'u',
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oOCSP = 500,
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oPing,
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oCacheCert,
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oValidate,
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oLookup,
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oLoadCRL,
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oSquidMode,
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oPEM,
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oEscapedPEM,
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oForceDefaultResponder
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};
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/* The list of options as used by the argparse.c code. */
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static ARGPARSE_OPTS opts[] = {
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{ oVerbose, "verbose", 0, N_("verbose") },
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{ oQuiet, "quiet", 0, N_("be somewhat more quiet") },
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{ oOCSP, "ocsp", 0, N_("use OCSP instead of CRLs") },
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{ oPing, "ping", 0, N_("check whether a dirmngr is running")},
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{ oCacheCert,"cache-cert",0, N_("add a certificate to the cache")},
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{ oValidate, "validate", 0, N_("validate a certificate")},
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{ oLookup, "lookup", 0, N_("lookup a certificate")},
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{ oLocal, "local", 0, N_("lookup only locally stored certificates")},
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{ oUrl, "url", 0, N_("expect an URL for --lookup")},
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{ oLoadCRL, "load-crl", 0, N_("load a CRL into the dirmngr")},
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{ oSquidMode,"squid-mode",0, N_("special mode for use by Squid")},
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{ oPEM, "pem", 0, N_("certificates are expected in PEM format")},
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{ oForceDefaultResponder, "force-default-responder", 0,
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N_("force the use of the default OCSP responder")},
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{ 0, NULL, 0, NULL }
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};
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/* The usual structure for the program flags. */
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static struct
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{
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int quiet;
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int verbose;
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const char *dirmngr_program;
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int force_pipe_server;
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int force_default_responder;
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int pem;
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int escaped_pem; /* PEM is additional percent encoded. */
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int url; /* Expect an URL. */
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int local; /* Lookup up only local certificates. */
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int use_ocsp;
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} opt;
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/* Communication structure for the certificate inquire callback. */
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struct inq_cert_parm_s
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{
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assuan_context_t ctx;
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const unsigned char *cert;
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size_t certlen;
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};
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/* Base64 conversion tables. */
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static unsigned char bintoasc[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz"
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"0123456789+/";
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static unsigned char asctobin[256]; /* runtime initialized */
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/* Prototypes. */
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static assuan_context_t start_dirmngr (int only_daemon);
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static gpg_error_t read_certificate (const char *fname,
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unsigned char **rbuf, size_t *rbuflen);
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static gpg_error_t do_check (assuan_context_t ctx,
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const unsigned char *cert, size_t certlen);
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static gpg_error_t do_cache (assuan_context_t ctx,
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const unsigned char *cert, size_t certlen);
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static gpg_error_t do_validate (assuan_context_t ctx,
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const unsigned char *cert, size_t certlen);
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static gpg_error_t do_loadcrl (assuan_context_t ctx, const char *filename);
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static gpg_error_t do_lookup (assuan_context_t ctx, const char *pattern);
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static gpg_error_t squid_loop_body (assuan_context_t ctx);
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/* Function called by argparse.c to display information. */
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static const char *
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my_strusage (int level)
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{
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const char *p;
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switch(level)
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{
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case 11: p = "dirmngr-client (GnuPG)";
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break;
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case 13: p = VERSION; break;
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case 17: p = PRINTABLE_OS_NAME; break;
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case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
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case 49: p = PACKAGE_BUGREPORT; break;
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case 1:
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case 40: p =
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_("Usage: dirmngr-client [options] "
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"[certfile|pattern] (-h for help)\n");
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break;
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case 41: p =
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_("Syntax: dirmngr-client [options] [certfile|pattern]\n"
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"Test an X.509 certificate against a CRL or do an OCSP check\n"
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"The process returns 0 if the certificate is valid, 1 if it is\n"
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"not valid and other error codes for general failures\n");
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break;
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default: p = NULL;
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}
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return p;
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}
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int
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main (int argc, char **argv )
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{
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ARGPARSE_ARGS pargs;
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assuan_context_t ctx;
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gpg_error_t err;
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unsigned char *certbuf;
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size_t certbuflen = 0;
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int cmd_ping = 0;
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int cmd_cache_cert = 0;
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int cmd_validate = 0;
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int cmd_lookup = 0;
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int cmd_loadcrl = 0;
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int cmd_squid_mode = 0;
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set_strusage (my_strusage);
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log_set_prefix ("dirmngr-client",
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JNLIB_LOG_WITH_PREFIX);
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/* For W32 we need to initialize the socket subsystem. Becuase we
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don't use Pth we need to do this explicit. */
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#ifdef HAVE_W32_SYSTEM
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{
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WSADATA wsadat;
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WSAStartup (0x202, &wsadat);
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}
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#endif /*HAVE_W32_SYSTEM*/
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/* Init Assuan. */
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assuan_set_assuan_log_prefix (log_get_prefix (NULL));
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assuan_set_gpg_err_source (GPG_ERR_SOURCE_DEFAULT);
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/* Setup I18N. */
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i18n_init();
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/* Parse the command line. */
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pargs.argc = &argc;
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pargs.argv = &argv;
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pargs.flags= 1; /* Do not remove the args. */
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while (arg_parse (&pargs, opts) )
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{
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switch (pargs.r_opt)
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{
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case oVerbose: opt.verbose++; break;
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case oQuiet: opt.quiet++; break;
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case oOCSP: opt.use_ocsp++; break;
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case oPing: cmd_ping = 1; break;
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case oCacheCert: cmd_cache_cert = 1; break;
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case oValidate: cmd_validate = 1; break;
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case oLookup: cmd_lookup = 1; break;
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case oUrl: opt.url = 1; break;
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case oLocal: opt.local = 1; break;
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case oLoadCRL: cmd_loadcrl = 1; break;
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case oPEM: opt.pem = 1; break;
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case oSquidMode:
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opt.pem = 1;
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opt.escaped_pem = 1;
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cmd_squid_mode = 1;
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break;
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case oForceDefaultResponder: opt.force_default_responder = 1; break;
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default : pargs.err = 2; break;
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}
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}
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if (log_get_errorcount (0))
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exit (2);
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/* Build the helptable for radix64 to bin conversion. */
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if (opt.pem)
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{
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int i;
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unsigned char *s;
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for (i=0; i < 256; i++ )
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asctobin[i] = 255; /* Used to detect invalid characters. */
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for (s=bintoasc, i=0; *s; s++, i++)
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asctobin[*s] = i;
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}
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if (cmd_ping)
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err = 0;
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else if (cmd_lookup || cmd_loadcrl)
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{
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if (!argc)
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usage (1);
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err = 0;
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}
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else if (cmd_squid_mode)
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{
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err = 0;
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if (argc)
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usage (1);
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}
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else if (!argc)
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{
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err = read_certificate (NULL, &certbuf, &certbuflen);
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if (err)
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log_error (_("error reading certificate from stdin: %s\n"),
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gpg_strerror (err));
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}
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else if (argc == 1)
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{
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err = read_certificate (*argv, &certbuf, &certbuflen);
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if (err)
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log_error (_("error reading certificate from `%s': %s\n"),
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*argv, gpg_strerror (err));
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}
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else
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{
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err = 0;
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usage (1);
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}
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if (log_get_errorcount (0))
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exit (2);
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if (certbuflen > 20000)
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{
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log_error (_("certificate too large to make any sense\n"));
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exit (2);
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}
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ctx = start_dirmngr (1);
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if (!ctx)
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exit (2);
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if (cmd_ping)
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;
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else if (cmd_squid_mode)
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{
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while (!(err = squid_loop_body (ctx)))
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;
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if (gpg_err_code (err) == GPG_ERR_EOF)
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err = 0;
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}
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else if (cmd_lookup)
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{
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int last_err = 0;
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for (; argc; argc--, argv++)
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{
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err = do_lookup (ctx, *argv);
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if (err)
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{
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log_error (_("lookup failed: %s\n"), gpg_strerror (err));
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last_err = err;
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}
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}
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err = last_err;
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}
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else if (cmd_loadcrl)
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{
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int last_err = 0;
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for (; argc; argc--, argv++)
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{
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err = do_loadcrl (ctx, *argv);
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if (err)
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{
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log_error (_("loading CRL `%s' failed: %s\n"),
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*argv, gpg_strerror (err));
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last_err = err;
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}
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}
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err = last_err;
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}
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else if (cmd_cache_cert)
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{
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err = do_cache (ctx, certbuf, certbuflen);
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xfree (certbuf);
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}
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else if (cmd_validate)
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{
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err = do_validate (ctx, certbuf, certbuflen);
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xfree (certbuf);
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}
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else
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{
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err = do_check (ctx, certbuf, certbuflen);
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xfree (certbuf);
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}
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assuan_release (ctx);
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if (cmd_ping)
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{
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if (!opt.quiet)
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log_info (_("a dirmngr daemon is up and running\n"));
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return 0;
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}
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else if (cmd_lookup|| cmd_loadcrl || cmd_squid_mode)
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return err? 1:0;
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else if (cmd_cache_cert)
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{
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if (err && gpg_err_code (err) == GPG_ERR_DUP_VALUE )
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{
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if (!opt.quiet)
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log_info (_("certificate already cached\n"));
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}
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else if (err)
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{
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log_error (_("error caching certificate: %s\n"),
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gpg_strerror (err));
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return 1;
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}
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return 0;
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}
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else if (cmd_validate && err)
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{
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log_error (_("validation of certificate failed: %s\n"),
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gpg_strerror (err));
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return 1;
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}
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else if (!err)
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{
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if (!opt.quiet)
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log_info (_("certificate is valid\n"));
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return 0;
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}
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else if (gpg_err_code (err) == GPG_ERR_CERT_REVOKED )
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{
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if (!opt.quiet)
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log_info (_("certificate has been revoked\n"));
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return 1;
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}
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else
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{
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log_error (_("certificate check failed: %s\n"), gpg_strerror (err));
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return 2;
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}
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}
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/* Print status line from the assuan protocol. */
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static gpg_error_t
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status_cb (void *opaque, const char *line)
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{
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(void)opaque;
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if (opt.verbose > 2)
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log_info (_("got status: `%s'\n"), line);
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return 0;
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}
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/* Print data as retrieved by the lookup function. */
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static gpg_error_t
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data_cb (void *opaque, const void *buffer, size_t length)
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{
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gpg_error_t err;
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struct b64state *state = opaque;
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if (buffer)
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{
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err = b64enc_write (state, buffer, length);
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if (err)
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log_error (_("error writing base64 encoding: %s\n"),
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gpg_strerror (err));
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}
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return 0;
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}
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/* Try to connect to the dirmngr via socket or fork it off and work by
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pipes. Handle the server's initial greeting */
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static assuan_context_t
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start_dirmngr (int only_daemon)
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{
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int rc;
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char *infostr, *p;
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assuan_context_t ctx;
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int try_default = 0;
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infostr = opt.force_pipe_server? NULL : getenv ("DIRMNGR_INFO");
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if (only_daemon && (!infostr || !*infostr))
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{
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infostr = xstrdup (dirmngr_socket_name ());
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try_default = 1;
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}
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rc = assuan_new (&ctx);
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if (rc)
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{
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log_error (_("failed to allocate assuan context: %s\n"),
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gpg_strerror (rc));
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return NULL;
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}
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if (!infostr || !*infostr)
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{
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const char *pgmname;
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const char *argv[3];
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int no_close_list[3];
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int i;
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if (only_daemon)
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{
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log_error (_("apparently no running dirmngr\n"));
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return NULL;
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}
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if (opt.verbose)
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log_info (_("no running dirmngr - starting one\n"));
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if (!opt.dirmngr_program || !*opt.dirmngr_program)
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opt.dirmngr_program = "./dirmngr";
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if ( !(pgmname = strrchr (opt.dirmngr_program, '/')))
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pgmname = opt.dirmngr_program;
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else
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pgmname++;
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argv[0] = pgmname;
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argv[1] = "--server";
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argv[2] = NULL;
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i=0;
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if (log_get_fd () != -1)
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no_close_list[i++] = assuan_fd_from_posix_fd (log_get_fd ());
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no_close_list[i++] = assuan_fd_from_posix_fd (es_fileno (es_stderr));
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no_close_list[i] = -1;
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/* Connect to the agent and perform initial handshaking. */
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rc = assuan_pipe_connect (ctx, opt.dirmngr_program, argv,
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no_close_list, NULL, NULL, 0);
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}
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else /* Connect to a daemon. */
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{
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int prot;
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int pid;
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infostr = xstrdup (infostr);
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if (!try_default && *infostr)
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{
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if ( !(p = strchr (infostr, ':')) || p == infostr)
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{
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log_error (_("malformed DIRMNGR_INFO environment variable\n"));
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xfree (infostr);
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if (only_daemon)
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return NULL;
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/* Try again by starting a new instance. */
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opt.force_pipe_server = 1;
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return start_dirmngr (0);
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}
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*p++ = 0;
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pid = atoi (p);
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while (*p && *p != ':')
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p++;
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prot = *p? atoi (p+1) : 0;
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if (prot != 1)
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{
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log_error (_("dirmngr protocol version %d is not supported\n"),
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prot);
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xfree (infostr);
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if (only_daemon)
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return NULL;
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opt.force_pipe_server = 1;
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return start_dirmngr (0);
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}
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}
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else
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pid = -1;
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rc = assuan_socket_connect (ctx, infostr, pid, 0);
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xfree (infostr);
|
|
if (gpg_err_code(rc) == GPG_ERR_ASS_CONNECT_FAILED && !only_daemon)
|
|
{
|
|
log_error (_("can't connect to the dirmngr - trying fall back\n"));
|
|
opt.force_pipe_server = 1;
|
|
return start_dirmngr (0);
|
|
}
|
|
}
|
|
|
|
if (rc)
|
|
{
|
|
assuan_release (ctx);
|
|
log_error (_("can't connect to the dirmngr: %s\n"),
|
|
gpg_strerror (rc));
|
|
return NULL;
|
|
}
|
|
|
|
return ctx;
|
|
}
|
|
|
|
|
|
/* Read the first PEM certificate from the file FNAME. If fname is
|
|
NULL the next certificate is read from stdin. The certificate is
|
|
returned in an alloced buffer whose address will be returned in
|
|
RBUF and its length in RBUFLEN. */
|
|
static gpg_error_t
|
|
read_pem_certificate (const char *fname, unsigned char **rbuf, size_t *rbuflen)
|
|
{
|
|
FILE *fp;
|
|
int c;
|
|
int pos;
|
|
int value;
|
|
unsigned char *buf;
|
|
size_t bufsize, buflen;
|
|
enum {
|
|
s_init, s_idle, s_lfseen, s_begin,
|
|
s_b64_0, s_b64_1, s_b64_2, s_b64_3,
|
|
s_waitend
|
|
} state = s_init;
|
|
|
|
fp = fname? fopen (fname, "r") : stdin;
|
|
if (!fp)
|
|
return gpg_error_from_errno (errno);
|
|
|
|
pos = 0;
|
|
value = 0;
|
|
bufsize = 8192;
|
|
buf = xmalloc (bufsize);
|
|
buflen = 0;
|
|
while ((c=getc (fp)) != EOF)
|
|
{
|
|
int escaped_c = 0;
|
|
|
|
if (opt.escaped_pem)
|
|
{
|
|
if (c == '%')
|
|
{
|
|
char tmp[2];
|
|
if ((c = getc(fp)) == EOF)
|
|
break;
|
|
tmp[0] = c;
|
|
if ((c = getc(fp)) == EOF)
|
|
break;
|
|
tmp[1] = c;
|
|
if (!hexdigitp (tmp) || !hexdigitp (tmp+1))
|
|
{
|
|
log_error ("invalid percent escape sequence\n");
|
|
state = s_idle; /* Force an error. */
|
|
/* Skip to end of line. */
|
|
while ( (c=getc (fp)) != EOF && c != '\n')
|
|
;
|
|
goto ready;
|
|
}
|
|
c = xtoi_2 (tmp);
|
|
escaped_c = 1;
|
|
}
|
|
else if (c == '\n')
|
|
goto ready; /* Ready. */
|
|
}
|
|
switch (state)
|
|
{
|
|
case s_idle:
|
|
if (c == '\n')
|
|
{
|
|
state = s_lfseen;
|
|
pos = 0;
|
|
}
|
|
break;
|
|
case s_init:
|
|
state = s_lfseen;
|
|
case s_lfseen:
|
|
if (c != "-----BEGIN "[pos])
|
|
state = s_idle;
|
|
else if (pos == 10)
|
|
state = s_begin;
|
|
else
|
|
pos++;
|
|
break;
|
|
case s_begin:
|
|
if (c == '\n')
|
|
state = s_b64_0;
|
|
break;
|
|
case s_b64_0:
|
|
case s_b64_1:
|
|
case s_b64_2:
|
|
case s_b64_3:
|
|
{
|
|
if (buflen >= bufsize)
|
|
{
|
|
bufsize += 8192;
|
|
buf = xrealloc (buf, bufsize);
|
|
}
|
|
|
|
if (c == '-')
|
|
state = s_waitend;
|
|
else if ((c = asctobin[c & 0xff]) == 255 )
|
|
; /* Just skip invalid base64 characters. */
|
|
else if (state == s_b64_0)
|
|
{
|
|
value = c << 2;
|
|
state = s_b64_1;
|
|
}
|
|
else if (state == s_b64_1)
|
|
{
|
|
value |= (c>>4)&3;
|
|
buf[buflen++] = value;
|
|
value = (c<<4)&0xf0;
|
|
state = s_b64_2;
|
|
}
|
|
else if (state == s_b64_2)
|
|
{
|
|
value |= (c>>2)&15;
|
|
buf[buflen++] = value;
|
|
value = (c<<6)&0xc0;
|
|
state = s_b64_3;
|
|
}
|
|
else
|
|
{
|
|
value |= c&0x3f;
|
|
buf[buflen++] = value;
|
|
state = s_b64_0;
|
|
}
|
|
}
|
|
break;
|
|
case s_waitend:
|
|
/* Note that we do not check that the base64 decoder has
|
|
been left in the expected state. We assume that the PEM
|
|
header is just fine. However we need to wait for the
|
|
real LF and not a trailing percent escaped one. */
|
|
if (c== '\n' && !escaped_c)
|
|
goto ready;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
ready:
|
|
if (fname)
|
|
fclose (fp);
|
|
|
|
if (state == s_init && c == EOF)
|
|
{
|
|
xfree (buf);
|
|
return gpg_error (GPG_ERR_EOF);
|
|
}
|
|
else if (state != s_waitend)
|
|
{
|
|
log_error ("no certificate or invalid encoded\n");
|
|
xfree (buf);
|
|
return gpg_error (GPG_ERR_INV_ARMOR);
|
|
}
|
|
|
|
*rbuf = buf;
|
|
*rbuflen = buflen;
|
|
return 0;
|
|
}
|
|
|
|
/* Read a binary certificate from the file FNAME. If fname is NULL the
|
|
file is read from stdin. The certificate is returned in an alloced
|
|
buffer whose address will be returned in RBUF and its length in
|
|
RBUFLEN. */
|
|
static gpg_error_t
|
|
read_certificate (const char *fname, unsigned char **rbuf, size_t *rbuflen)
|
|
{
|
|
gpg_error_t err;
|
|
FILE *fp;
|
|
unsigned char *buf;
|
|
size_t nread, bufsize, buflen;
|
|
|
|
if (opt.pem)
|
|
return read_pem_certificate (fname, rbuf, rbuflen);
|
|
|
|
fp = fname? fopen (fname, "rb") : stdin;
|
|
if (!fp)
|
|
return gpg_error_from_errno (errno);
|
|
|
|
buf = NULL;
|
|
bufsize = buflen = 0;
|
|
#define NCHUNK 8192
|
|
do
|
|
{
|
|
bufsize += NCHUNK;
|
|
if (!buf)
|
|
buf = xmalloc (bufsize);
|
|
else
|
|
buf = xrealloc (buf, bufsize);
|
|
|
|
nread = fread (buf+buflen, 1, NCHUNK, fp);
|
|
if (nread < NCHUNK && ferror (fp))
|
|
{
|
|
err = gpg_error_from_errno (errno);
|
|
xfree (buf);
|
|
if (fname)
|
|
fclose (fp);
|
|
return err;
|
|
}
|
|
buflen += nread;
|
|
}
|
|
while (nread == NCHUNK);
|
|
#undef NCHUNK
|
|
if (fname)
|
|
fclose (fp);
|
|
*rbuf = buf;
|
|
*rbuflen = buflen;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Callback for the inquire fiunction to send back the certificate. */
|
|
static gpg_error_t
|
|
inq_cert (void *opaque, const char *line)
|
|
{
|
|
struct inq_cert_parm_s *parm = opaque;
|
|
gpg_error_t err;
|
|
|
|
if (!strncmp (line, "TARGETCERT", 10) && (line[10] == ' ' || !line[10]))
|
|
{
|
|
err = assuan_send_data (parm->ctx, parm->cert, parm->certlen);
|
|
}
|
|
else if (!strncmp (line, "SENDCERT", 8) && (line[8] == ' ' || !line[8]))
|
|
{
|
|
/* We don't support this but dirmngr might ask for it. So
|
|
simply ignore it by sending back and empty value. */
|
|
err = assuan_send_data (parm->ctx, NULL, 0);
|
|
}
|
|
else if (!strncmp (line, "SENDCERT_SKI", 12)
|
|
&& (line[12]==' ' || !line[12]))
|
|
{
|
|
/* We don't support this but dirmngr might ask for it. So
|
|
simply ignore it by sending back an empty value. */
|
|
err = assuan_send_data (parm->ctx, NULL, 0);
|
|
}
|
|
else if (!strncmp (line, "SENDISSUERCERT", 14)
|
|
&& (line[14] == ' ' || !line[14]))
|
|
{
|
|
/* We don't support this but dirmngr might ask for it. So
|
|
simply ignore it by sending back an empty value. */
|
|
err = assuan_send_data (parm->ctx, NULL, 0);
|
|
}
|
|
else
|
|
{
|
|
log_info (_("unsupported inquiry `%s'\n"), line);
|
|
err = gpg_error (GPG_ERR_ASS_UNKNOWN_INQUIRE);
|
|
/* Note that this error will let assuan_transact terminate
|
|
immediately instead of return the error to the caller. It is
|
|
not clear whether this is the desired behaviour - it may
|
|
change in future. */
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/* Check the certificate CERT,CERTLEN for validity using a CRL or OCSP.
|
|
Return a proper error code. */
|
|
static gpg_error_t
|
|
do_check (assuan_context_t ctx, const unsigned char *cert, size_t certlen)
|
|
{
|
|
gpg_error_t err;
|
|
struct inq_cert_parm_s parm;
|
|
|
|
memset (&parm, 0, sizeof parm);
|
|
parm.ctx = ctx;
|
|
parm.cert = cert;
|
|
parm.certlen = certlen;
|
|
|
|
err = assuan_transact (ctx,
|
|
(opt.use_ocsp && opt.force_default_responder
|
|
? "CHECKOCSP --force-default-responder"
|
|
: opt.use_ocsp? "CHECKOCSP" : "CHECKCRL"),
|
|
NULL, NULL, inq_cert, &parm, status_cb, NULL);
|
|
if (opt.verbose > 1)
|
|
log_info ("response of dirmngr: %s\n", err? gpg_strerror (err): "okay");
|
|
return err;
|
|
}
|
|
|
|
/* Check the certificate CERT,CERTLEN for validity using a CRL or OCSP.
|
|
Return a proper error code. */
|
|
static gpg_error_t
|
|
do_cache (assuan_context_t ctx, const unsigned char *cert, size_t certlen)
|
|
{
|
|
gpg_error_t err;
|
|
struct inq_cert_parm_s parm;
|
|
|
|
memset (&parm, 0, sizeof parm);
|
|
parm.ctx = ctx;
|
|
parm.cert = cert;
|
|
parm.certlen = certlen;
|
|
|
|
err = assuan_transact (ctx, "CACHECERT", NULL, NULL,
|
|
inq_cert, &parm,
|
|
status_cb, NULL);
|
|
if (opt.verbose > 1)
|
|
log_info ("response of dirmngr: %s\n", err? gpg_strerror (err): "okay");
|
|
return err;
|
|
}
|
|
|
|
/* Check the certificate CERT,CERTLEN for validity using dirmngrs
|
|
internal validate feature. Return a proper error code. */
|
|
static gpg_error_t
|
|
do_validate (assuan_context_t ctx, const unsigned char *cert, size_t certlen)
|
|
{
|
|
gpg_error_t err;
|
|
struct inq_cert_parm_s parm;
|
|
|
|
memset (&parm, 0, sizeof parm);
|
|
parm.ctx = ctx;
|
|
parm.cert = cert;
|
|
parm.certlen = certlen;
|
|
|
|
err = assuan_transact (ctx, "VALIDATE", NULL, NULL,
|
|
inq_cert, &parm,
|
|
status_cb, NULL);
|
|
if (opt.verbose > 1)
|
|
log_info ("response of dirmngr: %s\n", err? gpg_strerror (err): "okay");
|
|
return err;
|
|
}
|
|
|
|
/* Load a CRL into the dirmngr. */
|
|
static gpg_error_t
|
|
do_loadcrl (assuan_context_t ctx, const char *filename)
|
|
{
|
|
gpg_error_t err;
|
|
const char *s;
|
|
char *fname, *line, *p;
|
|
|
|
if (opt.url)
|
|
fname = xstrdup (filename);
|
|
else
|
|
{
|
|
#ifdef HAVE_CANONICALIZE_FILE_NAME
|
|
fname = canonicalize_file_name (filename);
|
|
if (!fname)
|
|
{
|
|
log_error ("error canonicalizing `%s': %s\n",
|
|
filename, strerror (errno));
|
|
return gpg_error (GPG_ERR_GENERAL);
|
|
}
|
|
#else
|
|
fname = xstrdup (filename);
|
|
#endif
|
|
if (*fname != '/')
|
|
{
|
|
log_error (_("absolute file name expected\n"));
|
|
return gpg_error (GPG_ERR_GENERAL);
|
|
}
|
|
}
|
|
|
|
line = xmalloc (8 + 6 + strlen (fname) * 3 + 1);
|
|
p = stpcpy (line, "LOADCRL ");
|
|
if (opt.url)
|
|
p = stpcpy (p, "--url ");
|
|
for (s = fname; *s; s++)
|
|
{
|
|
if (*s < ' ' || *s == '+')
|
|
{
|
|
sprintf (p, "%%%02X", *s);
|
|
p += 3;
|
|
}
|
|
else if (*s == ' ')
|
|
*p++ = '+';
|
|
else
|
|
*p++ = *s;
|
|
}
|
|
*p = 0;
|
|
|
|
err = assuan_transact (ctx, line, NULL, NULL,
|
|
NULL, NULL,
|
|
status_cb, NULL);
|
|
if (opt.verbose > 1)
|
|
log_info ("response of dirmngr: %s\n", err? gpg_strerror (err): "okay");
|
|
xfree (line);
|
|
xfree (fname);
|
|
return err;
|
|
}
|
|
|
|
|
|
/* Do a LDAP lookup using PATTERN and print the result in a base-64
|
|
encoded format. */
|
|
static gpg_error_t
|
|
do_lookup (assuan_context_t ctx, const char *pattern)
|
|
{
|
|
gpg_error_t err;
|
|
const unsigned char *s;
|
|
char *line, *p;
|
|
struct b64state state;
|
|
|
|
if (opt.verbose)
|
|
log_info (_("looking up `%s'\n"), pattern);
|
|
|
|
err = b64enc_start (&state, stdout, NULL);
|
|
if (err)
|
|
return err;
|
|
|
|
line = xmalloc (10 + 6 + 13 + strlen (pattern)*3 + 1);
|
|
|
|
p = stpcpy (line, "LOOKUP ");
|
|
if (opt.url)
|
|
p = stpcpy (p, "--url ");
|
|
if (opt.local)
|
|
p = stpcpy (p, "--cache-only ");
|
|
for (s=pattern; *s; s++)
|
|
{
|
|
if (*s < ' ' || *s == '+')
|
|
{
|
|
sprintf (p, "%%%02X", *s);
|
|
p += 3;
|
|
}
|
|
else if (*s == ' ')
|
|
*p++ = '+';
|
|
else
|
|
*p++ = *s;
|
|
}
|
|
*p = 0;
|
|
|
|
|
|
err = assuan_transact (ctx, line,
|
|
data_cb, &state,
|
|
NULL, NULL,
|
|
status_cb, NULL);
|
|
if (opt.verbose > 1)
|
|
log_info ("response of dirmngr: %s\n", err? gpg_strerror (err): "okay");
|
|
|
|
err = b64enc_finish (&state);
|
|
|
|
xfree (line);
|
|
return err;
|
|
}
|
|
|
|
/* The body of an endless loop: Read a line from stdin, retrieve the
|
|
certificate from it, validate it and print "ERR" or "OK" to stdout.
|
|
Continue. */
|
|
static gpg_error_t
|
|
squid_loop_body (assuan_context_t ctx)
|
|
{
|
|
gpg_error_t err;
|
|
unsigned char *certbuf;
|
|
size_t certbuflen = 0;
|
|
|
|
err = read_pem_certificate (NULL, &certbuf, &certbuflen);
|
|
if (gpg_err_code (err) == GPG_ERR_EOF)
|
|
return err;
|
|
if (err)
|
|
{
|
|
log_error (_("error reading certificate from stdin: %s\n"),
|
|
gpg_strerror (err));
|
|
puts ("ERROR");
|
|
return 0;
|
|
}
|
|
|
|
err = do_check (ctx, certbuf, certbuflen);
|
|
xfree (certbuf);
|
|
if (!err)
|
|
{
|
|
if (opt.verbose)
|
|
log_info (_("certificate is valid\n"));
|
|
puts ("OK");
|
|
}
|
|
else
|
|
{
|
|
if (!opt.quiet)
|
|
{
|
|
if (gpg_err_code (err) == GPG_ERR_CERT_REVOKED )
|
|
log_info (_("certificate has been revoked\n"));
|
|
else
|
|
log_error (_("certificate check failed: %s\n"),
|
|
gpg_strerror (err));
|
|
}
|
|
puts ("ERROR");
|
|
}
|
|
|
|
fflush (stdout);
|
|
|
|
return 0;
|
|
}
|