X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=bacula%2Fsrc%2Fdird%2Fauthenticate.c;h=61c9ccfe854b8ade8c5f3c6c272359975e861394;hb=15f10308b46638aaf5b8f93d42ebbc55e29642ba;hp=16c3da759ad23577b3dad1e4dd8df34b670ade54;hpb=b5752d5d38754259dc2bb30e1461ae0431c2333d;p=bacula%2Fbacula diff --git a/bacula/src/dird/authenticate.c b/bacula/src/dird/authenticate.c index 16c3da759a..61c9ccfe85 100644 --- a/bacula/src/dird/authenticate.c +++ b/bacula/src/dird/authenticate.c @@ -1,3 +1,30 @@ +/* + Bacula® - The Network Backup Solution + + Copyright (C) 2001-2007 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. +*/ /* * * Bacula Director -- authorize.c -- handles authorization of @@ -10,31 +37,13 @@ * 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 "dird.h" +static const int dbglvl = 50; + extern DIRRES *director; -extern char my_name[]; /* Commands sent to Storage daemon and File daemon and received * from the User Agent */ @@ -45,37 +54,113 @@ static char OKhello[] = "3000 OK Hello\n"; static char FDOKhello[] = "2000 OK Hello\n"; /* Sent to User Agent */ -static char Dir_sorry[] = N_("1999 You are not authorized.\n"); +static char Dir_sorry[] = "1999 You are not authorized.\n"; /* Forward referenced functions */ /* * Authenticate Storage daemon connection */ -int authenticate_storage_daemon(JCR *jcr) +bool authenticate_storage_daemon(JCR *jcr, STORE *store) { BSOCK *sd = jcr->store_bsock; + char dirname[MAX_NAME_LENGTH]; + int tls_local_need = BNET_TLS_NONE; + int tls_remote_need = BNET_TLS_NONE; + int compatible = true; + bool auth_success = false; - /* + /* * Send my name to the Storage daemon then do authentication */ - if (!bnet_fsend(sd, hello, director->hdr.name)) { - Emsg1(M_FATAL, 0, _("Auth send error. ERR=%s\n"), bnet_strerror(sd)); + bstrncpy(dirname, director->hdr.name, sizeof(dirname)); + bash_spaces(dirname); + /* Timeout Hello after 1 min */ + btimer_t *tid = start_bsock_timer(sd, AUTH_TIMEOUT); + if (!sd->fsend(hello, dirname)) { + stop_bsock_timer(tid); + Dmsg1(dbglvl, _("Error sending Hello to Storage daemon. ERR=%s\n"), bnet_strerror(sd)); + Jmsg(jcr, M_FATAL, 0, _("Error sending Hello to Storage daemon. ERR=%s\n"), bnet_strerror(sd)); + return 0; } - if (!cram_md5_get_auth(sd, jcr->store->password) || - !cram_md5_auth(sd, jcr->store->password)) { - Emsg0(M_FATAL, 0, _("Storage daemon authorization failed.\n")); + + /* TLS Requirement */ + if (store->tls_enable) { + if (store->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } + } + + if (store->tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + auth_success = cram_md5_respond(sd, store->password, &tls_remote_need, &compatible); + if (auth_success) { + auth_success = cram_md5_challenge(sd, store->password, tls_local_need, compatible); + if (!auth_success) { + Dmsg1(dbglvl, "cram_challenge failed for %s\n", sd->who()); + } + } else { + Dmsg1(dbglvl, "cram_respond failed for %s\n", sd->who()); + } + + if (!auth_success) { + stop_bsock_timer(tid); + Dmsg0(dbglvl, _("Director and Storage daemon passwords or names not the same.\n")); + Jmsg2(jcr, M_FATAL, 0, + _("Director unable to authenticate with Storage daemon at \"%s:%d\". Possible causes:\n" + "Passwords or names not the same or\n" + "Maximum Concurrent Jobs exceeded on the SD or\n" + "SD networking messed up (restart daemon).\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"), + sd->host(), sd->port()); + return 0; + } + + /* 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) { + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("Authorization problem: Remote server did not advertise required TLS support.\n")); return 0; } - Dmsg1(6, ">stored: %s", sd->msg); - if (bnet_recv(sd) <= 0) { - Emsg1(M_FATAL, 0, _("bdird tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("Authorization problem: Remote server requires TLS.\n")); return 0; } - Dmsg1(10, "msg); + + /* Is TLS Enabled? */ + if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) { + /* Engage TLS! Full Speed Ahead! */ + if (!bnet_tls_client(store->tls_ctx, sd, NULL)) { + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("TLS negotiation failed with SD at \"%s:%d\"\n"), + sd->host(), sd->port()); + return 0; + } + if (store->tls_authenticate) { /* authentication only? */ + sd->free_tls(); /* yes, stop tls */ + } + } + + Dmsg1(116, ">stored: %s", sd->msg); + if (sd->recv() <= 0) { + stop_bsock_timer(tid); + Jmsg3(jcr, M_FATAL, 0, _("bdirdwho(), sd->host(), sd->bstrerror()); + return 0; + } + Dmsg1(110, "msg); + stop_bsock_timer(tid); if (strncmp(sd->msg, OKhello, sizeof(OKhello)) != 0) { - Emsg0(M_FATAL, 0, _("Storage daemon rejected Hello command\n")); + Dmsg0(dbglvl, _("Storage daemon rejected Hello command\n")); + Jmsg2(jcr, M_FATAL, 0, _("Storage daemon at \"%s:%d\" rejected Hello command\n"), + sd->host(), sd->port()); return 0; } return 1; @@ -87,52 +172,251 @@ int authenticate_storage_daemon(JCR *jcr) int authenticate_file_daemon(JCR *jcr) { BSOCK *fd = jcr->file_bsock; + CLIENT *client = jcr->client; + char dirname[MAX_NAME_LENGTH]; + int tls_local_need = BNET_TLS_NONE; + int tls_remote_need = BNET_TLS_NONE; + int compatible = true; + bool auth_success = false; - /* + /* * Send my name to the File daemon then do authentication */ - bnet_fsend(fd, hello, director->hdr.name); - if (!cram_md5_get_auth(fd, jcr->client->password) || - !cram_md5_auth(fd, jcr->client->password)) { - Emsg0(M_FATAL, 0, _("File daemon authentication failed.\n")); + bstrncpy(dirname, director->name(), sizeof(dirname)); + bash_spaces(dirname); + /* Timeout Hello after 1 min */ + btimer_t *tid = start_bsock_timer(fd, AUTH_TIMEOUT); + if (!fd->fsend(hello, dirname)) { + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("Error sending Hello to File daemon at \"%s:%d\". ERR=%s\n"), + fd->host(), fd->port(), fd->bstrerror()); + return 0; + } + Dmsg1(dbglvl, "Sent: %s", fd->msg); + + /* TLS Requirement */ + if (client->tls_enable) { + if (client->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } + } + + if (client->tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + auth_success = cram_md5_respond(fd, client->password, &tls_remote_need, &compatible); + if (auth_success) { + auth_success = cram_md5_challenge(fd, client->password, tls_local_need, compatible); + if (!auth_success) { + Dmsg1(dbglvl, "cram_auth failed for %s\n", fd->who()); + } + } else { + Dmsg1(dbglvl, "cram_get_auth failed for %s\n", fd->who()); + } + if (!auth_success) { + stop_bsock_timer(tid); + Dmsg0(dbglvl, _("Director and File daemon passwords or names not the same.\n")); + Jmsg(jcr, M_FATAL, 0, + _("Unable to authenticate with File daemon at \"%s:%d\". Possible causes:\n" + "Passwords or names not the same or\n" + "Maximum Concurrent Jobs exceeded on the FD or\n" + "FD networking messed up (restart daemon).\n" + "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"), + fd->host(), fd->port()); return 0; } - Dmsg1(6, ">filed: %s", fd->msg); - if (bnet_recv(fd) <= 0) { - Emsg1(M_FATAL, 0, _("bdirdwho(), fd->host()); return 0; } - Dmsg1(10, "msg); + + /* 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) { + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("Authorization problem: FD at \"%s:%d\" requires TLS.\n"), + fd->host(), fd->port()); + return 0; + } + + /* Is TLS Enabled? */ + if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) { + /* Engage TLS! Full Speed Ahead! */ + if (!bnet_tls_client(client->tls_ctx, fd, client->tls_allowed_cns)) { + + stop_bsock_timer(tid); + Jmsg(jcr, M_FATAL, 0, _("TLS negotiation failed with FD at \"%s:%d\".\n"), + fd->host(), fd->port()); + return 0; + } + if (client->tls_authenticate) { /* tls authentication only? */ + fd->free_tls(); /* yes, shutdown tls */ + } + } + + Dmsg1(116, ">filed: %s", fd->msg); + if (fd->recv() <= 0) { + stop_bsock_timer(tid); + Dmsg1(dbglvl, _("Bad response from File daemon to Hello command: ERR=%s\n"), + bnet_strerror(fd)); + Jmsg(jcr, M_FATAL, 0, _("Bad response from File daemon at \"%s:%d\" to Hello command: ERR=%s\n"), + fd->host(), fd->port(), fd->bstrerror()); + return 0; + } + Dmsg1(110, "msg); + stop_bsock_timer(tid); if (strncmp(fd->msg, FDOKhello, sizeof(FDOKhello)) != 0) { - Emsg0(M_FATAL, 0, _("File daemon rejected Hello command\n")); + Dmsg0(dbglvl, _("File daemon rejected Hello command\n")); + Jmsg(jcr, M_FATAL, 0, _("File daemon at \"%s:%d\" rejected Hello command\n"), + fd->host(), fd->port()); return 0; } return 1; } -/********************************************************************* +/********************************************************************* * */ -int authenticate_user_agent(BSOCK *ua) +int authenticate_user_agent(UAContext *uac) { - char name[128]; - int ok = 0; - + char name[MAX_NAME_LENGTH]; + int tls_local_need = BNET_TLS_NONE; + int tls_remote_need = BNET_TLS_NONE; + bool need_tls; + bool tls_authenticate; + int compatible = true; + CONRES *cons = NULL; + BSOCK *ua = uac->UA_sock; + bool auth_success = false; + TLS_CONTEXT *tls_ctx = NULL; + alist *verify_list = NULL; + + if (ua->msglen < 16 || ua->msglen >= MAX_NAME_LENGTH + 15) { + Emsg4(M_ERROR, 0, _("UA Hello from %s:%s:%d is invalid. Len=%d\n"), ua->who(), + ua->host(), ua->port(), ua->msglen); + return 0; + } if (sscanf(ua->msg, "Hello %127s calling\n", name) != 1) { - Emsg1(M_FATAL, 0, _("Authentication failure: %s"), ua->msg); + ua->msg[100] = 0; /* terminate string */ + Emsg4(M_ERROR, 0, _("UA Hello from %s:%s:%d is invalid. Got: %s\n"), ua->who(), + ua->host(), ua->port(), ua->msg); return 0; } - ok = cram_md5_auth(ua, director->password) && - cram_md5_get_auth(ua, director->password); + name[sizeof(name)-1] = 0; /* terminate name */ + if (strcmp(name, "*UserAgent*") == 0) { /* default console */ + /* TLS Requirement */ + if (director->tls_enable) { + if (director->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } + } + + tls_authenticate = director->tls_authenticate; + need_tls = director->tls_enable || tls_authenticate; + + if (tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + if (director->tls_verify_peer) { + verify_list = director->tls_allowed_cns; + } + + auth_success = cram_md5_challenge(ua, director->password, tls_local_need, + compatible) && + cram_md5_respond(ua, director->password, &tls_remote_need, &compatible); + } else { + unbash_spaces(name); + cons = (CONRES *)GetResWithName(R_CONSOLE, name); + if (cons) { + /* TLS Requirement */ + if (cons->tls_enable) { + if (cons->tls_require) { + tls_local_need = BNET_TLS_REQUIRED; + } else { + tls_local_need = BNET_TLS_OK; + } + } + + tls_authenticate = cons->tls_authenticate; + need_tls = cons->tls_enable || tls_authenticate; + + if (tls_authenticate) { + tls_local_need = BNET_TLS_REQUIRED; + } + + if (cons->tls_verify_peer) { + verify_list = cons->tls_allowed_cns; + } + + auth_success = cram_md5_challenge(ua, cons->password, tls_local_need, + compatible) && + cram_md5_respond(ua, cons->password, &tls_remote_need, &compatible); + + if (auth_success) { + uac->cons = cons; /* save console resource pointer */ + } + } else { + auth_success = false; + goto auth_done; + } + } + + + /* Verify that the remote peer 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) { + Emsg0(M_FATAL, 0, _("Authorization problem:" + " Remote client did not advertise required TLS support.\n")); + auth_success = false; + goto auth_done; + } + + /* Verify that we are willing to meet the peer's requirements */ + if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) { + Emsg0(M_FATAL, 0, _("Authorization problem:" + " Remote client requires TLS.\n")); + auth_success = false; + goto auth_done; + } + + if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) { + if (cons) { + tls_ctx = cons->tls_ctx; + } else { + tls_ctx = director->tls_ctx; + } + + /* Engage TLS! Full Speed Ahead! */ + if (!bnet_tls_server(tls_ctx, ua, verify_list)) { + Emsg0(M_ERROR, 0, _("TLS negotiation failed.\n")); + auth_success = false; + goto auth_done; + } + if (tls_authenticate) { /* authentication only? */ + ua->free_tls(); /* stop tls */ + } + } + - if (!ok) { - bnet_fsend(ua, "%s", _(Dir_sorry)); - Emsg0(M_WARNING, 0, _("Unable to authenticate User Agent\n")); +/* Authorization Completed */ +auth_done: + if (!auth_success) { + ua->fsend("%s", _(Dir_sorry)); + Emsg4(M_ERROR, 0, _("Unable to authenticate console \"%s\" at %s:%s:%d.\n"), + name, ua->who(), ua->host(), ua->port()); + sleep(5); return 0; } - bnet_fsend(ua, "1000 OK: %s Version: " VERSION " (" DATE ")\n", my_name); + ua->fsend(_("1000 OK: %s Version: %s (%s)\n"), my_name, VERSION, BDATE); return 1; }