s4:libnet Make 'net vampire' more robust to command line arguments

When we have just joined a domain, we know a bit about that domain.
Use these to override previous guesses as to what domain and realm to
use for the rest of the join.

Andrew Bartlett

diff --git a/source4/libnet/libnet_vampire.c b/source4/libnet/libnet_vampire.c
index 8d2393fc2a972831695468f8efafe42e953efe52..a5c8a8f5d42bfbbbe3b020b2b9ec66436e526d76 100644 (file)
--- a/source4/libnet/libnet_vampire.c
+++ b/source4/libnet/libnet_vampire.c
@@ -36,6 +36,7 @@
 #include "system/time.h"
 #include "lib/ldb_wrap.h"
 #include "auth/auth.h"
+#include "auth/credentials/credentials.h"
 #include "param/param.h"
 #include "param/provision.h"
 #include "libcli/security/dom_sid.h"
@@ -655,6 +656,11 @@ NTSTATUS libnet_Vampire(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
                return NT_STATUS_NO_MEMORY;
        }
        
+       /* Re-use the domain we are joining as the domain for the user
+        * to be authenticated with, unless they specified
+        * otherwise */
+       cli_credentials_set_domain(ctx->cred, r->in.domain_name, CRED_GUESS_ENV);
+
        join->in.domain_name    = r->in.domain_name;
        join->in.account_name   = account_name;
        join->in.netbios_name   = netbios_name;
@@ -673,6 +679,20 @@ NTSTATUS libnet_Vampire(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
        s->targetdir = r->in.targetdir;
 
        ZERO_STRUCT(b);
+
+       /* Be more robust:
+        * We now know the domain and realm for sure - if they didn't
+        * put one on the command line, use this for the rest of the
+        * join */
+       cli_credentials_set_realm(ctx->cred, join->out.realm, CRED_GUESS_ENV);
+       cli_credentials_set_domain(ctx->cred, join->out.domain_name, CRED_GUESS_ENV);
+
+       /* Now set these values into the smb.conf - we probably had
+        * empty or useless defaults here from whatever smb.conf we
+        * started with */
+       lp_set_cmdline(s->lp_ctx, "realm", join->out.realm);
+       lp_set_cmdline(s->lp_ctx, "workgroup", join->out.domain_name);
+
        b.in.domain_dns_name            = join->out.realm;
        b.in.domain_netbios_name        = join->out.domain_name;
        b.in.domain_sid                 = join->out.domain_sid;