Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 490 insertions, 0 deletions

diff --git a/libcli/http/gensec/basic.c b/libcli/http/gensec/basic.c
new file mode 100644
index 0000000..c7a1bbb
--- /dev/null
+++ b/libcli/http/gensec/basic.c
@@ -0,0 +1,204 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   HTTP library - Basic authentication mechanism gensec module
+
+   Copyright (C) 2014 Samuel Cabrero <samuelcabrero@kernevil.me>
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include <tevent.h>
+#include "lib/util/tevent_ntstatus.h"
+#include "auth/auth.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_internal.h"
+#include "auth/credentials/credentials.h"
+#include "lib/util/base64.h"
+
+_PUBLIC_ NTSTATUS gensec_http_basic_init(TALLOC_CTX *);
+
+struct gensec_http_basic_state {
+	enum {
+		GENSEC_HTTP_BASIC_START,
+		GENSEC_HTTP_BASIC_DONE,
+		GENSEC_HTTP_BASIC_ERROR,
+	} step;
+};
+
+static NTSTATUS gensec_http_basic_client_start(struct gensec_security *gensec)
+{
+	struct gensec_http_basic_state *state;
+
+	state = talloc_zero(gensec, struct gensec_http_basic_state);
+	if (state == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	gensec->private_data = state;
+
+	state->step = GENSEC_HTTP_BASIC_START;
+
+	return NT_STATUS_OK;
+}
+
+struct gensec_http_basic_update_state {
+	NTSTATUS status;
+	DATA_BLOB out;
+};
+
+static NTSTATUS gensec_http_basic_update_internal(struct gensec_security *gensec_ctx,
+						  TALLOC_CTX *mem_ctx,
+						  const DATA_BLOB in,
+						  DATA_BLOB *out);
+
+static struct tevent_req *gensec_http_basic_update_send(TALLOC_CTX *mem_ctx,
+						    struct tevent_context *ev,
+						    struct gensec_security *gensec_security,
+						    const DATA_BLOB in)
+{
+	struct tevent_req *req = NULL;
+	struct gensec_http_basic_update_state *state = NULL;
+	NTSTATUS status;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct gensec_http_basic_update_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	status = gensec_http_basic_update_internal(gensec_security,
+						   state, in,
+						   &state->out);
+	state->status = status;
+	if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		tevent_req_done(req);
+		return tevent_req_post(req, ev);
+	}
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+
+	tevent_req_done(req);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS gensec_http_basic_update_internal(struct gensec_security *gensec_ctx,
+						  TALLOC_CTX *mem_ctx,
+						  const DATA_BLOB in,
+						  DATA_BLOB *out)
+{
+	struct gensec_http_basic_state *state;
+	struct cli_credentials *creds;
+	char *tmp, *b64;
+
+	state = talloc_get_type_abort(gensec_ctx->private_data,
+				      struct gensec_http_basic_state);
+	creds = gensec_get_credentials(gensec_ctx);
+
+	switch (gensec_ctx->gensec_role) {
+	case GENSEC_CLIENT:
+		switch (state->step) {
+		case GENSEC_HTTP_BASIC_START:
+			tmp = talloc_asprintf(mem_ctx, "%s\\%s:%s",
+					cli_credentials_get_domain(creds),
+					cli_credentials_get_username(creds),
+					cli_credentials_get_password(creds));
+			if (tmp == NULL) {
+				state->step = GENSEC_HTTP_BASIC_ERROR;
+				return NT_STATUS_NO_MEMORY;
+			}
+			*out = data_blob_string_const(tmp);
+
+			b64 = base64_encode_data_blob(mem_ctx, *out);
+			if (b64 == NULL) {
+				state->step = GENSEC_HTTP_BASIC_ERROR;
+				return NT_STATUS_NO_MEMORY;
+			}
+			TALLOC_FREE(tmp);
+
+			tmp = talloc_asprintf(mem_ctx, "Basic %s", b64);
+			if (tmp == NULL) {
+				state->step = GENSEC_HTTP_BASIC_ERROR;
+				return NT_STATUS_NO_MEMORY;
+			}
+			TALLOC_FREE(b64);
+
+			*out = data_blob_string_const(tmp);
+			state->step = GENSEC_HTTP_BASIC_DONE;
+			return NT_STATUS_OK;
+
+		case GENSEC_HTTP_BASIC_DONE:
+		case GENSEC_HTTP_BASIC_ERROR:
+		default:
+			break;
+		}
+		state->step = GENSEC_HTTP_BASIC_ERROR;
+		return NT_STATUS_INTERNAL_ERROR;
+
+	case GENSEC_SERVER:
+		state->step = GENSEC_HTTP_BASIC_ERROR;
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	state->step = GENSEC_HTTP_BASIC_ERROR;
+	return NT_STATUS_INTERNAL_ERROR;
+}
+
+static NTSTATUS gensec_http_basic_update_recv(struct tevent_req *req,
+					      TALLOC_CTX *out_mem_ctx,
+					      DATA_BLOB *out)
+{
+	struct gensec_http_basic_update_state *state =
+		tevent_req_data(req,
+		struct gensec_http_basic_update_state);
+	NTSTATUS status;
+
+	*out = data_blob_null;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	*out = state->out;
+	talloc_steal(out_mem_ctx, state->out.data);
+	status = state->status;
+	tevent_req_received(req);
+	return status;
+}
+
+static const struct gensec_security_ops gensec_http_basic_security_ops = {
+	.name           = "http_basic",
+	.auth_type      = 0,
+	.client_start   = gensec_http_basic_client_start,
+	.update_send    = gensec_http_basic_update_send,
+	.update_recv    = gensec_http_basic_update_recv,
+	.enabled        = true,
+	.priority       = GENSEC_EXTERNAL,
+};
+
+_PUBLIC_ NTSTATUS gensec_http_basic_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS status;
+
+	status = gensec_register(ctx, &gensec_http_basic_security_ops);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to register '%s' gensec backend!\n",
+				gensec_http_basic_security_ops.name));
+		return status;
+	}
+
+	return status;
+}
diff --git a/libcli/http/gensec/generic.c b/libcli/http/gensec/generic.c
new file mode 100644
index 0000000..2f09b9d
--- /dev/null
+++ b/libcli/http/gensec/generic.c
@@ -0,0 +1,286 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   HTTP library - NTLM authentication mechanism gensec module
+
+   Copyright (C) 2014 Samuel Cabrero <samuelcabrero@kernevil.me>
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include <tevent.h>
+#include "lib/util/tevent_ntstatus.h"
+#include "auth/auth.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_internal.h"
+#include "lib/util/base64.h"
+
+#undef strncasecmp
+
+_PUBLIC_ NTSTATUS gensec_http_generic_init(TALLOC_CTX *);
+
+struct gensec_http_generic_state {
+	struct gensec_security *sub;
+	DATA_BLOB prefix;
+};
+
+static NTSTATUS gensec_http_generic_client_start(struct gensec_security *gensec,
+						 const char *prefix_str,
+						 const char *mech_oid)
+{
+	NTSTATUS status;
+	struct gensec_http_generic_state *state;
+
+	state = talloc_zero(gensec, struct gensec_http_generic_state);
+	if (state == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	gensec->private_data = state;
+
+	state->prefix = data_blob_string_const(prefix_str);
+
+	status = gensec_subcontext_start(state, gensec, &state->sub);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	return gensec_start_mech_by_oid(state->sub, mech_oid);
+}
+
+static NTSTATUS gensec_http_ntlm_client_start(struct gensec_security *gensec)
+{
+	return gensec_http_generic_client_start(gensec, "NTLM",
+						GENSEC_OID_NTLMSSP);
+}
+
+static NTSTATUS gensec_http_negotiate_client_start(struct gensec_security *gensec)
+{
+	return gensec_http_generic_client_start(gensec, "Negotiate",
+						GENSEC_OID_SPNEGO);
+}
+
+struct gensec_http_generic_update_state {
+	struct gensec_security *gensec;
+	DATA_BLOB sub_in;
+	NTSTATUS status;
+	DATA_BLOB out;
+};
+
+static void gensec_http_generic_update_done(struct tevent_req *subreq);
+
+static struct tevent_req *gensec_http_generic_update_send(TALLOC_CTX *mem_ctx,
+						    struct tevent_context *ev,
+						    struct gensec_security *gensec_ctx,
+						    const DATA_BLOB in)
+{
+	struct gensec_http_generic_state *http_generic =
+		talloc_get_type_abort(gensec_ctx->private_data,
+				      struct gensec_http_generic_state);
+	struct tevent_req *req = NULL;
+	struct gensec_http_generic_update_state *state = NULL;
+	struct tevent_req *subreq = NULL;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct gensec_http_generic_update_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->gensec = gensec_ctx;
+
+	if (in.length) {
+		int cmp;
+		DATA_BLOB b64b;
+		size_t skip = 0;
+
+		if (in.length < http_generic->prefix.length) {
+			tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+			return tevent_req_post(req, ev);
+		}
+
+		cmp = strncasecmp((const char *)in.data,
+				  (const char *)http_generic->prefix.data,
+				  http_generic->prefix.length);
+		if (cmp != 0) {
+			tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+			return tevent_req_post(req, ev);
+		}
+
+		if (in.length == http_generic->prefix.length) {
+			/*
+			 * We expect more data, but the
+			 * server just sent the prefix without
+			 * a space prefixing base64 data.
+			 *
+			 * It means the server rejects
+			 * the request with.
+			 */
+			tevent_req_nterror(req, NT_STATUS_LOGON_FAILURE);
+			return tevent_req_post(req, ev);
+		}
+
+		if (in.data[http_generic->prefix.length] != ' ') {
+			tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+			return tevent_req_post(req, ev);
+		}
+		skip = http_generic->prefix.length + 1;
+
+		b64b = data_blob_const(in.data + skip, in.length - skip);
+		if (b64b.length != 0) {
+			char *b64 = NULL;
+
+			/*
+			 * ensure it's terminated with \0' before
+			 * passing to base64_decode_data_blob_talloc().
+			 */
+			b64 = talloc_strndup(state, (const char *)b64b.data,
+					     b64b.length);
+			if (tevent_req_nomem(b64, req)) {
+				return tevent_req_post(req, ev);
+			}
+
+			state->sub_in = base64_decode_data_blob_talloc(state,
+								       b64);
+			TALLOC_FREE(b64);
+			if (tevent_req_nomem(state->sub_in.data, req)) {
+				return tevent_req_post(req, ev);
+			}
+		}
+	}
+
+	subreq = gensec_update_send(state, ev,
+				    http_generic->sub,
+				    state->sub_in);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, gensec_http_generic_update_done, req);
+
+	return req;
+}
+
+static void gensec_http_generic_update_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq,
+		struct tevent_req);
+	struct gensec_http_generic_update_state *state =
+		tevent_req_data(req,
+		struct gensec_http_generic_update_state);
+	struct gensec_http_generic_state *http_generic =
+		talloc_get_type_abort(state->gensec->private_data,
+		struct gensec_http_generic_state);
+	NTSTATUS status;
+	DATA_BLOB sub_out = data_blob_null;
+	char *b64 = NULL;
+	char *str = NULL;
+	int prefix_length;
+
+	status = gensec_update_recv(subreq, state, &sub_out);
+	TALLOC_FREE(subreq);
+	state->status = status;
+	if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		status = NT_STATUS_OK;
+	}
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	if (sub_out.length == 0) {
+		tevent_req_done(req);
+		return;
+	}
+
+	b64 = base64_encode_data_blob(state, sub_out);
+	data_blob_free(&sub_out);
+	if (tevent_req_nomem(b64, req)) {
+		return;
+	}
+
+	prefix_length = http_generic->prefix.length;
+	str = talloc_asprintf(state, "%*.*s %s", prefix_length, prefix_length,
+			      (const char *)http_generic->prefix.data, b64);
+	TALLOC_FREE(b64);
+	if (tevent_req_nomem(str, req)) {
+		return;
+	}
+
+	state->out = data_blob_string_const(str);
+	tevent_req_done(req);
+}
+
+static NTSTATUS gensec_http_generic_update_recv(struct tevent_req *req,
+					     TALLOC_CTX *out_mem_ctx,
+					     DATA_BLOB *out)
+{
+	struct gensec_http_generic_update_state *state =
+		tevent_req_data(req,
+		struct gensec_http_generic_update_state);
+	NTSTATUS status;
+
+	*out = data_blob_null;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	*out = state->out;
+	talloc_steal(out_mem_ctx, state->out.data);
+	status = state->status;
+	tevent_req_received(req);
+	return status;
+}
+
+static const struct gensec_security_ops gensec_http_ntlm_security_ops = {
+	.name           = "http_ntlm",
+	.auth_type      = 0,
+	.client_start   = gensec_http_ntlm_client_start,
+	.update_send    = gensec_http_generic_update_send,
+	.update_recv    = gensec_http_generic_update_recv,
+	.enabled        = true,
+	.priority       = GENSEC_EXTERNAL,
+};
+
+static const struct gensec_security_ops gensec_http_negotiate_security_ops = {
+	.name           = "http_negotiate",
+	.auth_type      = 0,
+	.client_start   = gensec_http_negotiate_client_start,
+	.update_send    = gensec_http_generic_update_send,
+	.update_recv    = gensec_http_generic_update_recv,
+	.enabled        = true,
+	.priority       = GENSEC_EXTERNAL,
+	.glue           = true,
+};
+
+_PUBLIC_ NTSTATUS gensec_http_generic_init(TALLOC_CTX *ctx)
+{
+	NTSTATUS status;
+
+	status = gensec_register(ctx, &gensec_http_ntlm_security_ops);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to register '%s' gensec backend!\n",
+				gensec_http_ntlm_security_ops.name));
+		return status;
+	}
+
+	status = gensec_register(ctx, &gensec_http_negotiate_security_ops);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to register '%s' gensec backend!\n",
+			  gensec_http_negotiate_security_ops.name));
+		return status;
+	}
+
+	return status;
+}