From b824b1b7bf19b4b8c64b7c2c5a6a1d3287820088 Mon Sep 17 00:00:00 2001 From: Volker Lendecke Date: Wed, 26 Aug 2009 14:56:41 +0200 Subject: Add a parameter to disable the automatic creation of krb5.conf files This is necessary because MIT 1.5 can't deal with certain types (Tree Root) of transitive AD trusts. The workaround is to add a [capaths] directive to /etc/krb5.conf, which we don't automatically put into the krb5.conf winbind creates. The alternative would have been something like a "krb5 conf include", but I think if someone has to mess with /etc/krb5.conf at this level, it should be easy to add the site-local KDCs as well. Next alternative is to correctly figure out the [capaths] parameter for all trusted domains, but for that I don't have the time right now. Sorry :-) --- docs-xml/smbdotconf/winbind/createkrb5conf.xml | 24 ++++++++++++++++++++++++ source3/include/proto.h | 1 + source3/libads/kerberos.c | 7 ++++++- source3/param/loadparm.c | 12 ++++++++++++ 4 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 docs-xml/smbdotconf/winbind/createkrb5conf.xml diff --git a/docs-xml/smbdotconf/winbind/createkrb5conf.xml b/docs-xml/smbdotconf/winbind/createkrb5conf.xml new file mode 100644 index 0000000000..38818240c3 --- /dev/null +++ b/docs-xml/smbdotconf/winbind/createkrb5conf.xml @@ -0,0 +1,24 @@ + + + + + Setting this paramter to no prevents + winbind from creating custom krb5.conf files. Winbind normally does + this because the krb5 libraries are not AD-site-aware and thus would + pick any domain controller out of potentially very many. Winbind + is site-aware and makes the krb5 libraries use a local DC by + creating its own krb5.conf files. + + + Preventing winbind from doing this might become necessary if you + have to add special options into your system-krb5.conf that winbind + does not see. + + + +yes + diff --git a/source3/include/proto.h b/source3/include/proto.h index 44f6685dac..50ac834307 100644 --- a/source3/include/proto.h +++ b/source3/include/proto.h @@ -3998,6 +3998,7 @@ bool lp_winbind_refresh_tickets(void); bool lp_winbind_offline_logon(void); bool lp_winbind_normalize_names(void); bool lp_winbind_rpc_only(void); +bool lp_create_krb5_conf(void); const char **lp_idmap_domains(void); const char *lp_idmap_backend(void); char *lp_idmap_alloc_backend(void); diff --git a/source3/libads/kerberos.c b/source3/libads/kerberos.c index e1618636e1..c1e6c4ac38 100644 --- a/source3/libads/kerberos.c +++ b/source3/libads/kerberos.c @@ -817,7 +817,7 @@ bool create_local_private_krb5_conf_for_domain(const char *realm, const char *sitename, struct sockaddr_storage *pss) { - char *dname = lock_path("smb_krb5"); + char *dname; char *tmpname = NULL; char *fname = NULL; char *file_contents = NULL; @@ -828,6 +828,11 @@ bool create_local_private_krb5_conf_for_domain(const char *realm, char *realm_upper = NULL; bool result = false; + if (!lp_create_krb5_conf()) { + return false; + } + + dname = lock_path("smb_krb5"); if (!dname) { return false; } diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c index 35984716a2..c91f67656b 100644 --- a/source3/param/loadparm.c +++ b/source3/param/loadparm.c @@ -199,6 +199,7 @@ struct global { bool bWinbindOfflineLogon; bool bWinbindNormalizeNames; bool bWinbindRpcOnly; + bool bCreateKrb5Conf; char *szIdmapBackend; char *szIdmapAllocBackend; char *szAddShareCommand; @@ -4588,6 +4589,15 @@ static struct parm_struct parm_table[] = { .enum_list = NULL, .flags = FLAG_ADVANCED, }, + { + .label = "create krb5 conf", + .type = P_BOOL, + .p_class = P_GLOBAL, + .ptr = &Globals.bCreateKrb5Conf, + .special = NULL, + .enum_list = NULL, + .flags = FLAG_ADVANCED, + }, {NULL, P_BOOL, P_NONE, NULL, NULL, NULL, 0} }; @@ -5005,6 +5015,7 @@ static void init_globals(bool first_time_only) #endif Globals.bUnixExtensions = True; Globals.bResetOnZeroVC = False; + Globals.bCreateKrb5Conf = true; /* hostname lookups can be very expensive and are broken on a large number of sites (tridge) */ @@ -5359,6 +5370,7 @@ FN_GLOBAL_BOOL(lp_winbind_refresh_tickets, &Globals.bWinbindRefreshTickets) FN_GLOBAL_BOOL(lp_winbind_offline_logon, &Globals.bWinbindOfflineLogon) FN_GLOBAL_BOOL(lp_winbind_normalize_names, &Globals.bWinbindNormalizeNames) FN_GLOBAL_BOOL(lp_winbind_rpc_only, &Globals.bWinbindRpcOnly) +FN_GLOBAL_BOOL(lp_create_krb5_conf, &Globals.bCreateKrb5Conf) FN_GLOBAL_CONST_STRING(lp_idmap_backend, &Globals.szIdmapBackend) FN_GLOBAL_STRING(lp_idmap_alloc_backend, &Globals.szIdmapAllocBackend) -- cgit