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authorAndrew Bartlett <abartlet@samba.org>2012-03-11 06:45:39 +1100
committerStefan Metzmacher <metze@samba.org>2012-04-03 17:47:31 +0200
commit4ccac9079302a725d80ab379c5e375a084d17497 (patch)
tree9a58e63714c65573e88bff74169df1025bf3c91e /source3
parente425948323ba433b3ff8c41379b5277228265e75 (diff)
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s3-ntlm_auth Use GENSEC for gss-spnego server
This imports the gensec handling code from the source4 ntlm_auth, which will eventually be used for all the NTLMSSP and SPNEGO clients and servers but which is only used for gss-spnego for now. Andrew Bartlett Signed-off-by: Stefan Metzmacher <metze@samba.org>
Diffstat (limited to 'source3')
-rw-r--r--source3/utils/ntlm_auth.c794
1 files changed, 390 insertions, 404 deletions
diff --git a/source3/utils/ntlm_auth.c b/source3/utils/ntlm_auth.c
index 6fc772e67c..457ae7d163 100644
--- a/source3/utils/ntlm_auth.c
+++ b/source3/utils/ntlm_auth.c
@@ -59,7 +59,7 @@ enum stdio_helper_mode {
SQUID_2_5_BASIC,
SQUID_2_5_NTLMSSP,
NTLMSSP_CLIENT_1,
- GSS_SPNEGO,
+ GSS_SPNEGO_SERVER,
GSS_SPNEGO_CLIENT,
NTLM_SERVER_1,
NTLM_CHANGE_PASSWORD_1,
@@ -94,31 +94,52 @@ struct ntlm_auth_state {
bool have_session_key;
DATA_BLOB session_key;
DATA_BLOB initial_message;
+ void *gensec_private_1;
};
-
-typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
- int length);
-
-static void manage_squid_basic_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_gss_spnego_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
- char *buf, int length);
-
-static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
- char *buf, int length);
+typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state, char *buf,
+ int length, void **private2);
+
+static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ stdio_helper_function fn, void **private2);
+
+static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
+
+static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2);
static const struct {
enum stdio_helper_mode mode;
@@ -129,7 +150,7 @@ static const struct {
{ SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
{ SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
{ NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
- { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
+ { GSS_SPNEGO_SERVER, "gss-spnego", manage_gss_spnego_request},
{ GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
{ NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
{ NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
@@ -154,6 +175,68 @@ static const char *opt_pam_winbind_conf;
const char *opt_target_service;
const char *opt_target_hostname;
+
+/* This is a bit hairy, but the basic idea is to do a password callback
+ to the calling application. The callback comes from within gensec */
+
+static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state, char *buf, int length,
+ void **password)
+{
+ DATA_BLOB in;
+ if (strlen(buf) < 2) {
+ DEBUG(1, ("query [%s] invalid", buf));
+ x_fprintf(x_stdout, "BH Query invalid\n");
+ return;
+ }
+
+ if (strlen(buf) > 3) {
+ in = base64_decode_data_blob(buf + 3);
+ } else {
+ in = data_blob(NULL, 0);
+ }
+
+ if (strncmp(buf, "PW ", 3) == 0) {
+
+ *password = talloc_strndup(NULL,
+ (const char *)in.data, in.length);
+
+ if (*password == NULL) {
+ DEBUG(1, ("Out of memory\n"));
+ x_fprintf(x_stdout, "BH Out of memory\n");
+ data_blob_free(&in);
+ return;
+ }
+
+ x_fprintf(x_stdout, "OK\n");
+ data_blob_free(&in);
+ return;
+ }
+ DEBUG(1, ("Asked for (and expected) a password\n"));
+ x_fprintf(x_stdout, "BH Expected a password\n");
+ data_blob_free(&in);
+}
+
+/**
+ * Callback for password credentials. This is not async, and when
+ * GENSEC and the credentials code is made async, it will look rather
+ * different.
+ */
+
+static const char *get_password(struct cli_credentials *credentials)
+{
+ char *password = NULL;
+
+ /* Ask for a password */
+ x_fprintf(x_stdout, "PW\n");
+ credentials->priv_data = NULL;
+
+ manage_squid_request(NUM_HELPER_MODES /* bogus */, NULL, NULL, manage_gensec_get_pw_request, (void **)&password);
+ talloc_steal(credentials, password);
+ return password;
+}
+
/**
* A limited set of features are defined with text strings as needed
* by ntlm_auth
@@ -846,6 +929,7 @@ static struct auth4_context *make_auth4_context_ntlm_auth(TALLOC_CTX *mem_ctx, b
}
static NTSTATUS ntlm_auth_start_ntlmssp_server(TALLOC_CTX *mem_ctx,
+ struct loadparm_context *lp_ctx,
struct gensec_security **gensec_security_out)
{
struct gensec_security *gensec_security;
@@ -855,7 +939,6 @@ static NTSTATUS ntlm_auth_start_ntlmssp_server(TALLOC_CTX *mem_ctx,
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
struct gensec_settings *gensec_settings;
- struct loadparm_context *lp_ctx;
size_t idx = 0;
struct cli_credentials *server_credentials;
@@ -865,13 +948,6 @@ static NTSTATUS ntlm_auth_start_ntlmssp_server(TALLOC_CTX *mem_ctx,
return NT_STATUS_NO_MEMORY;
}
- lp_ctx = loadparm_init_s3(tmp_ctx, loadparm_s3_context());
- if (lp_ctx == NULL) {
- DEBUG(10, ("loadparm_init_s3 failed\n"));
- TALLOC_FREE(tmp_ctx);
- return NT_STATUS_INVALID_SERVER_STATE;
- }
-
gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
if (lp_ctx == NULL) {
DEBUG(10, ("lpcfg_gensec_settings failed\n"));
@@ -1036,7 +1112,8 @@ static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_m
return NT_STATUS_MORE_PROCESSING_REQUIRED;
}
-static void manage_squid_ntlmssp_request_int(struct ntlm_auth_state *state,
+static void manage_squid_ntlmssp_request_int(struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
char *buf, int length,
TALLOC_CTX *mem_ctx,
char **response)
@@ -1130,6 +1207,7 @@ static void manage_squid_ntlmssp_request_int(struct ntlm_auth_state *state,
if (!state->gensec_security) {
nt_status = ntlm_auth_start_ntlmssp_server(state,
+ lp_ctx,
&state->gensec_security);
if (!NT_STATUS_IS_OK(nt_status)) {
*response = talloc_asprintf(
@@ -1183,12 +1261,14 @@ static void manage_squid_ntlmssp_request_int(struct ntlm_auth_state *state,
data_blob_free(&request);
}
-static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
char *response;
- manage_squid_ntlmssp_request_int(state, buf, length,
+ manage_squid_ntlmssp_request_int(lp_ctx, state,buf, length,
talloc_tos(), &response);
if (response == NULL) {
@@ -1199,8 +1279,10 @@ static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
TALLOC_FREE(response);
}
-static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
DATA_BLOB request, reply;
NTSTATUS nt_status;
@@ -1372,8 +1454,10 @@ static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
data_blob_free(&request);
}
-static void manage_squid_basic_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
char *user, *pass;
user=buf;
@@ -1399,414 +1483,300 @@ static void manage_squid_basic_request(struct ntlm_auth_state *state,
}
}
-static void offer_gss_spnego_mechs(void) {
-
- DATA_BLOB token;
- struct spnego_data spnego;
- ssize_t len;
- char *reply_base64;
- TALLOC_CTX *ctx = talloc_tos();
- char *principal;
- char *myname_lower;
-
- ZERO_STRUCT(spnego);
-
- myname_lower = talloc_strdup(ctx, lp_netbios_name());
- if (!myname_lower) {
- return;
- }
- strlower_m(myname_lower);
-
- principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
- if (!principal) {
- return;
- }
-
- /* Server negTokenInit (mech offerings) */
- spnego.type = SPNEGO_NEG_TOKEN_INIT;
- spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 4);
-#ifdef HAVE_KRB5
- spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
- spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_KERBEROS5);
- spnego.negTokenInit.mechTypes[2] = talloc_strdup(ctx, OID_NTLMSSP);
- spnego.negTokenInit.mechTypes[3] = NULL;
-#else
- spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
- spnego.negTokenInit.mechTypes[1] = NULL;
-#endif
-
-
- spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
- strlen(principal));
-
- len = spnego_write_data(ctx, &token, &spnego);
- spnego_free_data(&spnego);
-
- if (len == -1) {
- DEBUG(1, ("Could not write SPNEGO data blob\n"));
- x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
- return;
- }
-
- reply_base64 = base64_encode_data_blob(talloc_tos(), token);
- x_fprintf(x_stdout, "TT %s *\n", reply_base64);
-
- TALLOC_FREE(reply_base64);
- data_blob_free(&token);
- DEBUG(10, ("sent SPNEGO negTokenInit\n"));
- return;
-}
-
-static void manage_gss_spnego_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ char *buf, int length, void **private1)
{
- struct spnego_data request, response;
- DATA_BLOB token;
- DATA_BLOB raw_in_token = data_blob_null;
- DATA_BLOB raw_out_token = data_blob_null;
- NTSTATUS status;
- ssize_t len;
- TALLOC_CTX *ctx = talloc_tos();
-
- const char *unix_username = NULL;
+ DATA_BLOB in;
+ DATA_BLOB out = data_blob(NULL, 0);
+ char *out_base64 = NULL;
+ const char *reply_arg = NULL;
+ struct gensec_ntlm_state {
+ struct gensec_security *gensec_state;
+ const char *set_password;
+ };
+ struct gensec_ntlm_state *state;
+ NTSTATUS nt_status;
+ bool first = false;
const char *reply_code;
- char *reply_base64;
- char *reply_argument = NULL;
- char *supportedMech = NULL;
-
- if (strlen(buf) < 2) {
- DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
- x_fprintf(x_stdout, "BH SPENGO query invalid\n");
- return;
- }
-
- if (strncmp(buf, "YR", 2) == 0) {
- TALLOC_FREE(state->gensec_security);
- TALLOC_FREE(state->spnego_mech);
- TALLOC_FREE(state->spnego_mech_oid);
- } else if (strncmp(buf, "KK", 2) == 0) {
- ;
- } else {
- DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
- x_fprintf(x_stdout, "BH SPENGO query invalid\n");
- return;
- }
+ struct cli_credentials *creds;
- if ( (strlen(buf) == 2)) {
+ static char *want_feature_list = NULL;
+ static DATA_BLOB session_key;
- /* no client data, get the negTokenInit offering
- mechanisms */
+ TALLOC_CTX *mem_ctx;
- offer_gss_spnego_mechs();
- return;
+ if (*private1) {
+ state = (struct gensec_ntlm_state *)*private1;
+ } else {
+ state = talloc_zero(NULL, struct gensec_ntlm_state);
+ if (!state) {
+ x_fprintf(x_stdout, "BH No Memory\n");
+ exit(1);
+ }
+ *private1 = state;
+ if (opt_password) {
+ state->set_password = opt_password;
+ }
}
- /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
-
- if (strlen(buf) <= 3) {
- DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
- x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
+ if (strlen(buf) < 2) {
+ DEBUG(1, ("query [%s] invalid", buf));
+ x_fprintf(x_stdout, "BH Query invalid\n");
return;
}
- token = base64_decode_data_blob(buf + 3);
-
- if ((token.length >= 7)
- && (strncmp((char *)token.data, "NTLMSSP", 7) == 0)) {
- char *reply;
-
- data_blob_free(&token);
-
- DEBUG(10, ("Could not parse GSS-SPNEGO, trying raw "
- "ntlmssp\n"));
-
- manage_squid_ntlmssp_request_int(state, buf, length,
- talloc_tos(), &reply);
- if (reply == NULL) {
- x_fprintf(x_stdout, "BH Out of memory\n");
+ if (strlen(buf) > 3) {
+ if(strncmp(buf, "SF ", 3) == 0) {
+ DEBUG(10, ("Setting flags to negotiate\n"));
+ talloc_free(want_feature_list);
+ want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
+ x_fprintf(x_stdout, "OK\n");
return;
}
-
- if (strncmp(reply, "AF ", 3) == 0) {
- x_fprintf(x_stdout, "AF * %s\n", reply+3);
- } else {
- x_fprintf(x_stdout, "%s *\n", reply);
- }
-
- TALLOC_FREE(reply);
- return;
+ in = base64_decode_data_blob(buf + 3);
+ } else {
+ in = data_blob(NULL, 0);
}
- ZERO_STRUCT(request);
- len = spnego_read_data(ctx, token, &request);
- data_blob_free(&token);
-
- if (len == -1) {
- DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
- x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
+ if (strncmp(buf, "YR", 2) == 0) {
+ if (state->gensec_state) {
+ talloc_free(state->gensec_state);
+ state->gensec_state = NULL;
+ }
+ } else if ( (strncmp(buf, "OK", 2) == 0)) {
+ /* Just return BH, like ntlm_auth from Samba 3 does. */
+ x_fprintf(x_stdout, "BH Command expected\n");
+ data_blob_free(&in);
+ return;
+ } else if ( (strncmp(buf, "TT ", 3) != 0) &&
+ (strncmp(buf, "KK ", 3) != 0) &&
+ (strncmp(buf, "AF ", 3) != 0) &&
+ (strncmp(buf, "NA ", 3) != 0) &&
+ (strncmp(buf, "UG", 2) != 0) &&
+ (strncmp(buf, "PW ", 3) != 0) &&
+ (strncmp(buf, "GK", 2) != 0) &&
+ (strncmp(buf, "GF", 2) != 0)) {
+ DEBUG(1, ("SPNEGO request [%s] invalid prefix\n", buf));
+ x_fprintf(x_stdout, "BH SPNEGO request invalid prefix\n");
+ data_blob_free(&in);
return;
}
- if (request.type == SPNEGO_NEG_TOKEN_INIT) {
-#ifdef HAVE_KRB5
- int krb5_idx = -1;
-#endif
- int ntlm_idx = -1;
- int used_idx = -1;
- int i;
+ mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
- if (state->spnego_mech) {
- DEBUG(1, ("Client restarted SPNEGO with NegTokenInit "
- "while mech[%s] was already negotiated\n",
- state->spnego_mech));
- x_fprintf(x_stdout, "BH Client send NegTokenInit twice\n");
- return;
- }
+ /* setup gensec */
+ if (!(state->gensec_state)) {
+ switch (stdio_helper_mode) {
+ case GSS_SPNEGO_CLIENT:
+ case NTLMSSP_CLIENT_1:
+ /* setup the client side */
- /* Second request from Client. This is where the
- client offers its mechanism to use. */
-
- if ( (request.negTokenInit.mechTypes == NULL) ||
- (request.negTokenInit.mechTypes[0] == NULL) ) {
- DEBUG(1, ("Client did not offer any mechanism\n"));
- x_fprintf(x_stdout, "BH Client did not offer any "
- "mechanism\n");
- return;
- }
+ nt_status = gensec_client_start(NULL, &state->gensec_state,
+ lpcfg_gensec_settings(NULL, lp_ctx));
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ x_fprintf(x_stdout, "BH GENSEC mech failed to start: %s\n", nt_errstr(nt_status));
+ talloc_free(mem_ctx);
+ return;
+ }
- status = NT_STATUS_UNSUCCESSFUL;
- for (i = 0; request.negTokenInit.mechTypes[i] != NULL; i++) {
- DEBUG(10,("got mech[%d][%s]\n",
- i, request.negTokenInit.mechTypes[i]));
-#ifdef HAVE_KRB5
- if (strcmp(request.negTokenInit.mechTypes[i], OID_KERBEROS5_OLD) == 0) {
- krb5_idx = i;
- break;
+ creds = cli_credentials_init(state->gensec_state);
+ cli_credentials_set_conf(creds, lp_ctx);
+ if (opt_username) {
+ cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
}
- if (strcmp(request.negTokenInit.mechTypes[i], OID_KERBEROS5) == 0) {
- krb5_idx = i;
- break;
+ if (opt_domain) {
+ cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
}
-#endif
- if (strcmp(request.negTokenInit.mechTypes[i], OID_NTLMSSP) == 0) {
- ntlm_idx = i;
- break;
+ if (state->set_password) {
+ cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
+ } else {
+ cli_credentials_set_password_callback(creds, get_password);
}
- }
-
- used_idx = ntlm_idx;
-#ifdef HAVE_KRB5
- if (krb5_idx != -1) {
- ntlm_idx = -1;
- used_idx = krb5_idx;
- }
-#endif
- if (ntlm_idx > -1) {
- state->spnego_mech = talloc_strdup(state, "ntlmssp");
- if (state->spnego_mech == NULL) {
- x_fprintf(x_stdout, "BH Out of memory\n");
- return;
+ if (opt_workstation) {
+ cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
}
- if (state->gensec_security) {
- DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
- "already got one\n"));
- x_fprintf(x_stdout, "BH Client wants a new "
- "NTLMSSP challenge, but "
- "already got one\n");
- TALLOC_FREE(state->gensec_security);
- return;
- }
+ gensec_set_credentials(state->gensec_state, creds);
- status = ntlm_auth_start_ntlmssp_server(state, &state->gensec_security);
- if (!NT_STATUS_IS_OK(status)) {
- x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
+ break;
+ case GSS_SPNEGO_SERVER:
+ case SQUID_2_5_NTLMSSP:
+ {
+ nt_status = ntlm_auth_start_ntlmssp_server(state, lp_ctx,
+ &state->gensec_state);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ x_fprintf(x_stdout, "BH GENSEC mech failed to start: %s\n", nt_errstr(nt_status));
+ talloc_free(mem_ctx);
return;
}
+ break;
}
-
-#ifdef HAVE_KRB5
- if (krb5_idx > -1) {
- state->spnego_mech = talloc_strdup(state, "krb5");
- if (state->spnego_mech == NULL) {
- x_fprintf(x_stdout, "BH Out of memory\n");
- return;
- }
+ default:
+ talloc_free(mem_ctx);
+ abort();
}
-#endif
- if (used_idx > -1) {
- state->spnego_mech_oid = talloc_strdup(state,
- request.negTokenInit.mechTypes[used_idx]);
- if (state->spnego_mech_oid == NULL) {
- x_fprintf(x_stdout, "BH Out of memory\n");
- return;
+
+ gensec_want_feature_list(state->gensec_state, want_feature_list);
+
+ switch (stdio_helper_mode) {
+ case GSS_SPNEGO_CLIENT:
+ case GSS_SPNEGO_SERVER:
+ nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
+ if (!in.length) {
+ first = true;
}
- supportedMech = talloc_strdup(ctx, state->spnego_mech_oid);
- if (supportedMech == NULL) {
- x_fprintf(x_stdout, "BH Out of memory\n");
- return;
+ break;
+ case NTLMSSP_CLIENT_1:
+ if (!in.length) {
+ first = true;
}
-
- status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- } else {
- status = NT_STATUS_NOT_SUPPORTED;
- }
- if (used_idx == 0) {
- status = NT_STATUS_OK;
- raw_in_token = request.negTokenInit.mechToken;
- }
- } else {
- if (state->spnego_mech == NULL) {
- DEBUG(1,("Got netTokenTarg without negTokenInit\n"));
- x_fprintf(x_stdout, "BH Got a negTokenTarg without "
- "negTokenInit\n");
- return;
+ /* fall through */
+ case SQUID_2_5_NTLMSSP:
+ nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
+ break;
+ default:
+ talloc_free(mem_ctx);
+ abort();
}
- if ((request.negTokenTarg.supportedMech != NULL) &&
- (strcmp(request.negTokenTarg.supportedMech, state->spnego_mech_oid) != 0 ) ) {
- DEBUG(1, ("Got a negTokenTarg with mech[%s] while [%s] was already negotiated\n",
- request.negTokenTarg.supportedMech,
- state->spnego_mech_oid));
- x_fprintf(x_stdout, "BH Got a negTokenTarg with speficied mech\n");
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
+ x_fprintf(x_stdout, "BH GENSEC mech failed to start\n");
+ talloc_free(mem_ctx);
return;
}
- status = NT_STATUS_OK;
- raw_in_token = request.negTokenTarg.responseToken;
}
- if (!NT_STATUS_IS_OK(status)) {
- /* error or more processing */
- } else if (strcmp(state->spnego_mech, "ntlmssp") == 0) {
-
- DEBUG(10, ("got NTLMSSP packet:\n"));
- dump_data(10, raw_in_token.data, raw_in_token.length);
-
- status = gensec_update(state->gensec_security,
- talloc_tos(), NULL,
- raw_in_token,
- &raw_out_token);
- if (NT_STATUS_IS_OK(status)) {
- struct auth_session_info *session_info;
- status = gensec_session_info(state->gensec_security, state->gensec_security, &session_info);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(status)));
- TALLOC_FREE(state->gensec_security);
- return;
- }
- unix_username = session_info->unix_info->unix_name;
- DEBUG(10, ("NTLMSSP OK!\n"));
- }
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- TALLOC_FREE(state->ntlmssp_state);
- }
-#ifdef HAVE_KRB5
- } else if (strcmp(state->spnego_mech, "krb5") == 0) {
- char *principal;
- DATA_BLOB ap_rep;
- DATA_BLOB session_key;
- struct PAC_LOGON_INFO *logon_info = NULL;
- DATA_BLOB ticket;
- uint8_t tok_id[2];
-
- if (!spnego_parse_krb5_wrap(ctx, raw_in_token,
- &ticket, tok_id)) {
- DEBUG(1, ("spnego_parse_krb5_wrap failed\n"));
- x_fprintf(x_stdout, "BH spnego_parse_krb5_wrap failed\n");
+ /* update */
+
+ if (strncmp(buf, "PW ", 3) == 0) {
+ state->set_password = talloc_strndup(state,
+ (const char *)in.data,
+ in.length);
+
+ cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
+ state->set_password,
+ CRED_SPECIFIED);
+ x_fprintf(x_stdout, "OK\n");
+ data_blob_free(&in);
+ talloc_free(mem_ctx);
+ return;
+ }
+
+ if (strncmp(buf, "GK", 2) == 0) {
+ char *base64_key;
+ DEBUG(10, ("Requested session key\n"));
+ nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key);
+ if(!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
+ x_fprintf(x_stdout, "BH No session key\n");
+ talloc_free(mem_ctx);
return;
+ } else {
+ base64_key = base64_encode_data_blob(state, session_key);
+ x_fprintf(x_stdout, "GK %s\n", base64_key);
+ talloc_free(base64_key);
}
+ talloc_free(mem_ctx);
+ return;
+ }
- status = ads_verify_ticket(ctx, lp_realm(), 0,
- &ticket,
- &principal, &logon_info, &ap_rep,
- &session_key, True);
+ if (stdio_helper_mode == SQUID_2_5_NTLMSSP && strncmp(buf, "GF", 2) == 0) {
+ uint32_t neg_flags;
- /* Now in "principal" we have the name we are authenticated as. */
+ neg_flags = gensec_ntlmssp_neg_flags(state->gensec_state);
- if (NT_STATUS_IS_OK(status)) {
- char *domain;
- char *user;
- domain = strchr_m(principal, '@');
+ DEBUG(10, ("Requested negotiated feature flags\n"));
+ x_fprintf(x_stdout, "GF 0x%08x\n", neg_flags);
+ return;
+ }
- if (domain == NULL) {
- DEBUG(1, ("Did not get a valid principal "
- "from ads_verify_ticket\n"));
- x_fprintf(x_stdout, "BH Did not get a "
- "valid principal from "
- "ads_verify_ticket\n");
- return;
- }
+ nt_status = gensec_update(state->gensec_state, mem_ctx, NULL, in, &out);
- *domain++ = '\0';
- domain = talloc_strdup(ctx, domain);
- user = talloc_strdup(ctx, principal);
+ /* don't leak 'bad password'/'no such user' info to the network client */
+ nt_status = nt_status_squash(nt_status);
- if (logon_info) {
- netsamlogon_cache_store(
- user, &logon_info->info3);
- }
+ if (out.length) {
+ out_base64 = base64_encode_data_blob(mem_ctx, out);
+ } else {
+ out_base64 = NULL;
+ }
- data_blob_free(&ap_rep);
- data_blob_free(&session_key);
- unix_username = talloc_asprintf(ctx, "%s\\%s", domain, user);
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ reply_arg = "*";
+ if (first && state->gensec_state->gensec_role == GENSEC_CLIENT) {
+ reply_code = "YR";
+ } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
+ reply_code = "KK";
+ } else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
+ reply_code = "TT";
+ } else {
+ abort();
}
- data_blob_free(&ticket);
-#endif
- }
- spnego_free_data(&request);
- ZERO_STRUCT(response);
- response.type = SPNEGO_NEG_TOKEN_TARG;
- if (NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(state->spnego_mech);
- TALLOC_FREE(state->spnego_mech_oid);
- response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
- response.negTokenTarg.responseToken = raw_out_token;
- reply_code = "AF";
- reply_argument = unix_username;
- } else if (NT_STATUS_EQUAL(status,
- NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- response.negTokenTarg.supportedMech = supportedMech;
- response.negTokenTarg.responseToken = raw_out_token;
- response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
- reply_code = "TT";
- reply_argument = talloc_strdup(ctx, "*");
- } else {
- TALLOC_FREE(state->spnego_mech);
- TALLOC_FREE(state->spnego_mech_oid);
- data_blob_free(&raw_out_token);
- response.negTokenTarg.negResult = SPNEGO_REJECT;
+ } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
+ reply_code = "BH NT_STATUS_ACCESS_DENIED";
+ reply_arg = nt_errstr(nt_status);
+ DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+ } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
+ reply_code = "BH NT_STATUS_UNSUCCESSFUL";
+ reply_arg = nt_errstr(nt_status);
+ DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+ } else if (!NT_STATUS_IS_OK(nt_status)) {
reply_code = "NA";
- reply_argument = talloc_strdup(ctx, nt_errstr(status));
- }
-
- if (!reply_argument) {
- DEBUG(1, ("Could not write SPNEGO data blob\n"));
- x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
- spnego_free_data(&response);
- return;
- }
+ reply_arg = nt_errstr(nt_status);
+ DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+ } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
+ struct auth_session_info *session_info;
- len = spnego_write_data(ctx, &token, &response);
- spnego_free_data(&response);
+ nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ reply_code = "BH Failed to retrive session info";
+ reply_arg = nt_errstr(nt_status);
+ DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status)));
+ } else {
- if (len == -1) {
- DEBUG(1, ("Could not write SPNEGO data blob\n"));
- x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
- return;
+ reply_code = "AF";
+ reply_arg = session_info->unix_info->unix_name;
+ talloc_free(session_info);
+ }
+ } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
+ reply_code = "AF";
+ reply_arg = out_base64;
+ } else {
+ abort();
}
- reply_base64 = base64_encode_data_blob(talloc_tos(), token);
-
- x_fprintf(x_stdout, "%s %s %s\n",
- reply_code, reply_base64, reply_argument);
+ switch (stdio_helper_mode) {
+ case GSS_SPNEGO_SERVER:
+ x_fprintf(x_stdout, "%s %s %s\n", reply_code,
+ out_base64 ? out_base64 : "*",
+ reply_arg ? reply_arg : "*");
+ break;
+ default:
+ if (out_base64) {
+ x_fprintf(x_stdout, "%s %s\n", reply_code, out_base64);
+ } else if (reply_arg) {
+ x_fprintf(x_stdout, "%s %s\n", reply_code, reply_arg);
+ } else {
+ x_fprintf(x_stdout, "%s\n", reply_code);
+ }
+ }
- TALLOC_FREE(reply_base64);
- data_blob_free(&token);
+ talloc_free(mem_ctx);
+ return;
+}
+static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
+{
+ manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
return;
}
@@ -2071,8 +2041,10 @@ static void manage_client_krb5_targ(struct spnego_data spnego)
#endif
-static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
DATA_BLOB request;
struct spnego_data spnego;
@@ -2212,8 +2184,10 @@ static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
return;
}
-static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
char *request, *parameter;
static DATA_BLOB challenge;
@@ -2405,8 +2379,10 @@ static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
}
}
-static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
- char *buf, int length)
+static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ char *buf, int length, void **private2)
{
char *request, *parameter;
static DATA_BLOB new_nt_pswd;
@@ -2616,8 +2592,10 @@ static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
}
}
-static void manage_squid_request(struct ntlm_auth_state *state,
- stdio_helper_function fn)
+static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
+ struct loadparm_context *lp_ctx,
+ struct ntlm_auth_state *state,
+ stdio_helper_function fn, void **private2)
{
char *buf;
char tmp[INITIAL_BUFFER_SIZE+1];
@@ -2671,12 +2649,14 @@ static void manage_squid_request(struct ntlm_auth_state *state,
return;
}
- fn(state, buf, length);
+ fn(stdio_helper_mode, lp_ctx, state, buf, length, private2);
talloc_free(buf);
}
-static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
+static void squid_stream(enum stdio_helper_mode stdio_mode,
+ struct loadparm_context *lp_ctx,
+ stdio_helper_function fn) {
TALLOC_CTX *mem_ctx;
struct ntlm_auth_state *state;
@@ -2703,7 +2683,7 @@ static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_functio
while(1) {
TALLOC_CTX *frame = talloc_stackframe();
- manage_squid_request(state, fn);
+ manage_squid_request(stdio_mode, lp_ctx, state, fn, NULL);
TALLOC_FREE(frame);
}
}
@@ -2801,7 +2781,7 @@ enum {
static const char *hex_challenge;
static const char *hex_lm_response;
static const char *hex_nt_response;
-
+ struct loadparm_context *lp_ctx;
poptContext pc;
/* NOTE: DO NOT change this interface without considering the implications!
@@ -2935,11 +2915,17 @@ enum {
opt_workstation = "";
}
+ lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
+ if (lp_ctx == NULL) {
+ x_fprintf(x_stderr, "loadparm_init_s3() failed!\n");
+ exit(1);
+ }
+
if (helper_protocol) {
int i;
for (i=0; i<NUM_HELPER_MODES; i++) {
if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
- squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
+ squid_stream(stdio_helper_protocols[i].mode, lp_ctx, stdio_helper_protocols[i].fn);
exit(0);
}
}