X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=bacula%2Fsrc%2Fstored%2Fauthenticate.c;h=bffb987e159539784e8d838bd25ce2933d152284;hb=9db867609d49aeb8284b62812e17ae26d212c700;hp=1709705960e3f3c6379dc17cef1c60d827e5e92c;hpb=9f8c89965e9f2d7e4fb55e9fd79a2aa83b85c985;p=bacula%2Fbacula diff --git a/bacula/src/stored/authenticate.c b/bacula/src/stored/authenticate.c index 1709705960..bffb987e15 100644 --- a/bacula/src/stored/authenticate.c +++ b/bacula/src/stored/authenticate.c @@ -1,89 +1,182 @@ +/* + Bacula® - The Network Backup Solution + + Copyright (C) 2000-2007 Free Software Foundation Europe e.V. + + The main author of Bacula is Kern Sibbald, with contributions from + many others, a complete list can be found in the file AUTHORS. + This program is Free Software; you can redistribute it and/or + modify it under the terms of version two of the GNU General Public + License as published by the Free Software Foundation and included + in the file LICENSE. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. + + Bacula® is a registered trademark of John Walker. + The licensor of Bacula is the Free Software Foundation Europe + (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich, + Switzerland, email:ftf@fsfeurope.org. +*/ /* * Authenticate caller * * Kern Sibbald, October 2000 * * Version $Id$ - * + * */ -/* - Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker - This program 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. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - You should have received a copy of the GNU General Public - License along with this program; if not, write to the Free - Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, - MA 02111-1307, USA. - - */ - #include "bacula.h" #include "stored.h" +const int dbglvl = 50; + static char Dir_sorry[] = "3999 No go\n"; static char OK_hello[] = "3000 OK Hello\n"; -/********************************************************************* +/********************************************************************* * * */ -static int authenticate(int rcode, BSOCK *bs) +static int authenticate(int rcode, BSOCK *bs, JCR* jcr) { - POOLMEM *name; + POOLMEM *dirname; DIRRES *director = NULL; + int tls_local_need = BNET_TLS_NONE; + int tls_remote_need = BNET_TLS_NONE; + int compatible = true; /* require md5 compatible DIR */ + bool auth_success = false; + alist *verify_list = NULL; if (rcode != R_DIRECTOR) { - Emsg1(M_FATAL, 0, _("I only authenticate Directors, not %d\n"), rcode); + Dmsg1(dbglvl, "I only authenticate Directors, not %d\n", rcode); + Jmsg1(jcr, M_FATAL, 0, _("I only authenticate Directors, not %d\n"), rcode); return 0; } - name = get_pool_memory(PM_MESSAGE); - name = check_pool_memory_size(name, bs->msglen); + if (bs->msglen < 25 || bs->msglen > 500) { + Dmsg2(dbglvl, "Bad Hello command from Director at %s. Len=%d.\n", + bs->who(), bs->msglen); + Jmsg2(jcr, M_FATAL, 0, _("Bad Hello command from Director at %s. Len=%d.\n"), + bs->who(), bs->msglen); + return 0; + } + dirname = get_pool_memory(PM_MESSAGE); + dirname = check_pool_memory_size(dirname, bs->msglen); - if (sscanf(bs->msg, "Hello Director %127s calling\n", name) != 1) { - Emsg1(M_FATAL, 0, _("Bad Hello command from Director: %s\n"), bs->msg); + if (sscanf(bs->msg, "Hello Director %127s calling", dirname) != 1) { + bs->msg[100] = 0; + Dmsg2(dbglvl, "Bad Hello command from Director at %s: %s\n", + bs->who(), bs->msg); + Jmsg2(jcr, M_FATAL, 0, _("Bad Hello command from Director at %s: %s\n"), + bs->who(), bs->msg); return 0; } director = NULL; - LockRes(); - while ((director=(DIRRES *)GetNextRes(rcode, (RES *)director))) { - if (strcmp(director->hdr.name, name) == 0) - break; + unbash_spaces(dirname); + foreach_res(director, rcode) { + if (strcmp(director->hdr.name, dirname) == 0) + break; } - UnlockRes(); if (!director) { - Emsg1(M_FATAL, 0, _("Connection from unknown Director %s rejected.\n"), name); - goto bail_out; + Dmsg2(dbglvl, "Connection from unknown Director %s at %s rejected.\n", + dirname, bs->who()); + Jmsg2(jcr, M_FATAL, 0, _("Connection from unknown Director %s at %s rejected.\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"), + dirname, bs->who()); + free_pool_memory(dirname); + return 0; + } + + /* TLS Requirement */ + if (director->tls_enable) { + if (director->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } + } + + if (director->tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + if (director->tls_verify_peer) { + verify_list = director->tls_allowed_cns; } - if (!cram_md5_auth(bs, director->password) || - !cram_md5_get_auth(bs, director->password)) { - Emsg0(M_FATAL, 0, _("Incorrect password given by Director.\n")); - goto bail_out; + + /* Timeout Hello after 10 mins */ + btimer_t *tid = start_bsock_timer(bs, AUTH_TIMEOUT); + auth_success = cram_md5_challenge(bs, director->password, tls_local_need, compatible); + if (auth_success) { + auth_success = cram_md5_respond(bs, director->password, &tls_remote_need, &compatible); + if (!auth_success) { + Dmsg1(dbglvl, "cram_get_auth failed with %s\n", bs->who()); + } + } else { + Dmsg1(dbglvl, "cram_auth failed with %s\n", bs->who()); + } + + if (!auth_success) { + Jmsg0(jcr, M_FATAL, 0, _("Incorrect password given by Director.\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n")); + auth_success = false; + goto auth_fatal; + } + + /* Verify that the remote host is willing to meet our TLS requirements */ + if (tls_remote_need < tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + Jmsg0(jcr, M_FATAL, 0, _("Authorization problem: Remote server did not" + " advertize required TLS support.\n")); + Dmsg2(dbglvl, "remote_need=%d local_need=%d\n", tls_remote_need, tls_local_need); + auth_success = false; + goto auth_fatal; + } + + /* Verify that we are willing to meet the remote host's requirements */ + if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + Jmsg0(jcr, M_FATAL, 0, _("Authorization problem: Remote server requires TLS.\n")); + Dmsg2(dbglvl, "remote_need=%d local_need=%d\n", tls_remote_need, tls_local_need); + auth_success = false; + goto auth_fatal; } - free_pool_memory(name); - return 1; -bail_out: - free_pool_memory(name); - return 0; + if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) { + /* Engage TLS! Full Speed Ahead! */ + if (!bnet_tls_server(director->tls_ctx, bs, verify_list)) { + Jmsg(jcr, M_FATAL, 0, _("TLS negotiation failed with DIR at \"%s:%d\"\n"), + bs->host(), bs->port()); + auth_success = false; + goto auth_fatal; + } + if (director->tls_authenticate) { /* authenticate with tls only? */ + bs->free_tls(); /* yes, shut it down */ + } + } + +auth_fatal: + stop_bsock_timer(tid); + free_pool_memory(dirname); + jcr->director = director; + return auth_success; } /* * Inititiate the message channel with the Director. * He has made a connection to our server. - * + * * Basic tasks done here: * Assume the Hello message is already in the input - * buffer. We then authenticate him. + * buffer. We then authenticate him. * Get device, media, and pool information from Director * * This is the channel across which we will send error @@ -93,25 +186,101 @@ int authenticate_director(JCR *jcr) { BSOCK *dir = jcr->dir_bsock; - if (!authenticate(R_DIRECTOR, dir)) { - bnet_fsend(dir, "%s", Dir_sorry); - Emsg0(M_ERROR, 0, _("Unable to authenticate Director\n")); - sleep(5); + if (!authenticate(R_DIRECTOR, dir, jcr)) { + dir->fsend("%s", Dir_sorry); + Dmsg1(dbglvl, "Unable to authenticate Director at %s.\n", dir->who()); + Jmsg1(jcr, M_ERROR, 0, _("Unable to authenticate Director at %s.\n"), dir->who()); + bmicrosleep(5, 0); return 0; } - return bnet_fsend(dir, "%s", OK_hello); + return dir->fsend("%s", OK_hello); } int authenticate_filed(JCR *jcr) { BSOCK *fd = jcr->file_bsock; + int tls_local_need = BNET_TLS_NONE; + int tls_remote_need = BNET_TLS_NONE; + int compatible = true; /* require md5 compatible FD */ + bool auth_success = false; + alist *verify_list = NULL; - if (cram_md5_auth(fd, jcr->sd_auth_key) && - cram_md5_get_auth(fd, jcr->sd_auth_key)) { - jcr->authenticated = TRUE; + /* TLS Requirement */ + if (me->tls_enable) { + if (me->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } } - if (!jcr->authenticated) { - Jmsg(jcr, M_FATAL, 0, _("Incorrect authorization key from File daemon rejected.\n")); + + if (me->tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + if (me->tls_verify_peer) { + verify_list = me->tls_allowed_cns; + } + + /* Timeout Hello after 5 mins */ + btimer_t *tid = start_bsock_timer(fd, AUTH_TIMEOUT); + /* Challenge FD */ + auth_success = cram_md5_challenge(fd, jcr->sd_auth_key, tls_local_need, compatible); + if (auth_success) { + /* Respond to his challenge */ + auth_success = cram_md5_respond(fd, jcr->sd_auth_key, &tls_remote_need, &compatible); + if (!auth_success) { + Dmsg1(dbglvl, "cram-get-auth failed with %s\n", fd->who()); + } + } else { + Dmsg1(dbglvl, "cram-auth failed with %s\n", fd->who()); + } + + if (!auth_success) { + Jmsg(jcr, M_FATAL, 0, _("Incorrect authorization key from File daemon at %s rejected.\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"), + fd->who()); + auth_success = false; + goto auth_fatal; + } + + /* Verify that the remote host is willing to meet our TLS requirements */ + if (tls_remote_need < tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + Jmsg(jcr, M_FATAL, 0, _("Authorization problem: Remote server did not" + " advertize required TLS support.\n")); + Dmsg2(dbglvl, "remote_need=%d local_need=%d\n", tls_remote_need, tls_local_need); + auth_success = false; + goto auth_fatal; + } + + /* Verify that we are willing to meet the remote host's requirements */ + if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + Jmsg(jcr, M_FATAL, 0, _("Authorization problem: Remote server requires TLS.\n")); + Dmsg2(dbglvl, "remote_need=%d local_need=%d\n", tls_remote_need, tls_local_need); + auth_success = false; + goto auth_fatal; + } + + if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) { + /* Engage TLS! Full Speed Ahead! */ + if (!bnet_tls_server(me->tls_ctx, fd, verify_list)) { + Jmsg(jcr, M_FATAL, 0, _("TLS negotiation failed with FD at \"%s:%d\"\n"), + fd->host(), fd->port()); + auth_success = false; + goto auth_fatal; + } + if (me->tls_authenticate) { /* tls authenticate only? */ + fd->free_tls(); /* yes, shut it down */ + } + } + +auth_fatal: + stop_bsock_timer(tid); + if (!auth_success) { + Jmsg(jcr, M_FATAL, 0, _("Incorrect authorization key from File daemon at %s rejected.\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"), + fd->who()); } - return jcr->authenticated; + jcr->authenticated = auth_success; + return auth_success; }