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

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

1 files changed, 511 insertions, 0 deletions

diff --git a/lib/smbconf/smbconf.c b/lib/smbconf/smbconf.c
new file mode 100644
index 0000000..4129ea5
--- /dev/null
+++ b/lib/smbconf/smbconf.c
@@ -0,0 +1,511 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  libsmbconf - Samba configuration library
+ *  Copyright (C) Michael Adam 2007-2008
+ *  Copyright (C) Guenther Deschner 2007
+ *
+ *  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 "smbconf_private.h"
+
+/**********************************************************************
+ *
+ * internal helper functions
+ *
+ **********************************************************************/
+
+static sbcErr smbconf_global_check(struct smbconf_ctx *ctx)
+{
+	if (!smbconf_share_exists(ctx, GLOBAL_NAME)) {
+		return smbconf_create_share(ctx, GLOBAL_NAME);
+	}
+
+	return SBC_ERR_OK;
+}
+
+
+/**********************************************************************
+ *
+ * The actual libsmbconf API functions that are exported.
+ *
+ **********************************************************************/
+
+const char *sbcErrorString(sbcErr error)
+{
+	switch (error) {
+		case SBC_ERR_OK:
+			return "SBC_ERR_OK";
+		case SBC_ERR_NOT_IMPLEMENTED:
+			return "SBC_ERR_NOT_IMPLEMENTED";
+		case SBC_ERR_NOT_SUPPORTED:
+			return "SBC_ERR_NOT_SUPPORTED";
+		case SBC_ERR_UNKNOWN_FAILURE:
+			return "SBC_ERR_UNKNOWN_FAILURE";
+		case SBC_ERR_NOMEM:
+			return "SBC_ERR_NOMEM";
+		case SBC_ERR_INVALID_PARAM:
+			return "SBC_ERR_INVALID_PARAM";
+		case SBC_ERR_BADFILE:
+			return "SBC_ERR_BADFILE";
+		case SBC_ERR_NO_SUCH_SERVICE:
+			return "SBC_ERR_NO_SUCH_SERVICE";
+		case SBC_ERR_IO_FAILURE:
+			return "SBC_ERR_IO_FAILURE";
+		case SBC_ERR_CAN_NOT_COMPLETE:
+			return "SBC_ERR_CAN_NOT_COMPLETE";
+		case SBC_ERR_NO_MORE_ITEMS:
+			return "SBC_ERR_NO_MORE_ITEMS";
+		case SBC_ERR_FILE_EXISTS:
+			return "SBC_ERR_FILE_EXISTS";
+		case SBC_ERR_ACCESS_DENIED:
+			return "SBC_ERR_ACCESS_DENIED";
+	}
+
+	return "unknown sbcErr value";
+}
+
+
+/**
+ * Tell whether the backend requires messaging to be set up
+ * for the backend to work correctly.
+ */
+bool smbconf_backend_requires_messaging(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->requires_messaging(ctx);
+}
+
+/**
+ * Tell whether the source is writeable.
+ */
+bool smbconf_is_writeable(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->is_writeable(ctx);
+}
+
+/**
+ * Close the configuration.
+ */
+void smbconf_shutdown(struct smbconf_ctx *ctx)
+{
+	talloc_free(ctx);
+}
+
+/**
+ * Detect changes in the configuration.
+ * The given csn struct is filled with the current csn.
+ * smbconf_changed() can also be used for initial retrieval
+ * of the csn.
+ */
+bool smbconf_changed(struct smbconf_ctx *ctx, struct smbconf_csn *csn,
+		     const char *service, const char *param)
+{
+	struct smbconf_csn old_csn;
+
+	if (csn == NULL) {
+		return false;
+	}
+
+	old_csn = *csn;
+
+	ctx->ops->get_csn(ctx, csn, service, param);
+	return (csn->csn != old_csn.csn);
+}
+
+/**
+ * Drop the whole configuration (restarting empty).
+ */
+sbcErr smbconf_drop(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->drop(ctx);
+}
+
+/**
+ * Get the whole configuration as lists of strings with counts:
+ *
+ *  num_shares   : number of shares
+ *  share_names  : list of length num_shares of share names
+ *  num_params   : list of length num_shares of parameter counts for each share
+ *  param_names  : list of lists of parameter names for each share
+ *  param_values : list of lists of parameter values for each share
+ */
+sbcErr smbconf_get_config(struct smbconf_ctx *ctx,
+			  TALLOC_CTX *mem_ctx,
+			  uint32_t *num_shares,
+			  struct smbconf_service ***services)
+{
+	sbcErr err;
+	TALLOC_CTX *tmp_ctx = NULL;
+	uint32_t tmp_num_shares;
+	char **tmp_share_names;
+	struct smbconf_service **tmp_services;
+	uint32_t count;
+
+	if ((num_shares == NULL) || (services == NULL)) {
+		err = SBC_ERR_INVALID_PARAM;
+		goto done;
+	}
+
+	tmp_ctx = talloc_stackframe();
+
+	err = smbconf_get_share_names(ctx, tmp_ctx, &tmp_num_shares,
+				      &tmp_share_names);
+	if (!SBC_ERROR_IS_OK(err)) {
+		goto done;
+	}
+
+	tmp_services = talloc_array(tmp_ctx, struct smbconf_service *,
+				    tmp_num_shares);
+	if (tmp_services == NULL) {
+		err = SBC_ERR_NOMEM;
+		goto done;
+	}
+
+	for (count = 0; count < tmp_num_shares; count++) {
+		err = smbconf_get_share(ctx, tmp_services,
+					tmp_share_names[count],
+					&tmp_services[count]);
+		if (!SBC_ERROR_IS_OK(err)) {
+			goto done;
+		}
+	}
+
+	err = SBC_ERR_OK;
+
+	*num_shares = tmp_num_shares;
+	if (tmp_num_shares > 0) {
+		*services = talloc_move(mem_ctx, &tmp_services);
+	} else {
+		*services = NULL;
+	}
+
+done:
+	talloc_free(tmp_ctx);
+	return err;
+}
+
+/**
+ * get the list of share names defined in the configuration.
+ */
+sbcErr smbconf_get_share_names(struct smbconf_ctx *ctx,
+			       TALLOC_CTX *mem_ctx,
+			       uint32_t *num_shares,
+			       char ***share_names)
+{
+	return ctx->ops->get_share_names(ctx, mem_ctx, num_shares,
+					 share_names);
+}
+
+/**
+ * check if a share/service of a given name exists
+ */
+bool smbconf_share_exists(struct smbconf_ctx *ctx,
+			  const char *servicename)
+{
+	return ctx->ops->share_exists(ctx, servicename);
+}
+
+/**
+ * Add a service if it does not already exist.
+ */
+sbcErr smbconf_create_share(struct smbconf_ctx *ctx,
+			    const char *servicename)
+{
+	if ((servicename != NULL) && smbconf_share_exists(ctx, servicename)) {
+		return SBC_ERR_FILE_EXISTS;
+	}
+
+	return ctx->ops->create_share(ctx, servicename);
+}
+
+/**
+ * create and set the definition for a new share (service).
+ */
+sbcErr smbconf_create_set_share(struct smbconf_ctx *ctx,
+				struct smbconf_service *service)
+{
+	sbcErr err, err2;
+	int i;
+	uint32_t num_includes = 0;
+	char **includes = NULL;
+	TALLOC_CTX *tmp_ctx = NULL;
+
+	if ((service->name != NULL) && smbconf_share_exists(ctx, service->name))
+	{
+		return SBC_ERR_FILE_EXISTS;
+	}
+
+	err = smbconf_transaction_start(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+
+	tmp_ctx = talloc_stackframe();
+
+	err = smbconf_create_share(ctx, service->name);
+	if (!SBC_ERROR_IS_OK(err)) {
+		goto cancel;
+	}
+
+	for (i = 0; i < service->num_params; i++) {
+		if (strequal(service->param_names[i], "include")) {
+			includes = talloc_realloc(tmp_ctx, includes, char *,
+						  num_includes+1);
+			if (includes == NULL) {
+				err = SBC_ERR_NOMEM;
+				goto cancel;
+			}
+			includes[num_includes] = talloc_strdup(includes,
+						service->param_values[i]);
+			if (includes[num_includes] == NULL) {
+				err = SBC_ERR_NOMEM;
+				goto cancel;
+			}
+			num_includes++;
+		} else {
+			err = smbconf_set_parameter(ctx,
+						    service->name,
+						    service->param_names[i],
+						    service->param_values[i]);
+			if (!SBC_ERROR_IS_OK(err)) {
+				goto cancel;
+			}
+		}
+	}
+
+	err = smbconf_set_includes(ctx, service->name, num_includes,
+				   discard_const_p(const char *, includes));
+	if (!SBC_ERROR_IS_OK(err)) {
+		goto cancel;
+	}
+
+	err = smbconf_transaction_commit(ctx);
+
+	goto done;
+
+cancel:
+	err2 = smbconf_transaction_cancel(ctx);
+	if (!SBC_ERROR_IS_OK(err2)) {
+		DEBUG(5, (__location__ ": Error cancelling transaction: %s\n",
+			  sbcErrorString(err2)));
+	}
+
+done:
+	talloc_free(tmp_ctx);
+	return err;
+}
+
+/**
+ * get a definition of a share (service) from configuration.
+ */
+sbcErr smbconf_get_share(struct smbconf_ctx *ctx,
+			 TALLOC_CTX *mem_ctx,
+			 const char *servicename,
+			 struct smbconf_service **service)
+{
+	return ctx->ops->get_share(ctx, mem_ctx, servicename, service);
+}
+
+/**
+ * delete a service from configuration
+ */
+sbcErr smbconf_delete_share(struct smbconf_ctx *ctx, const char *servicename)
+{
+	if (!smbconf_share_exists(ctx, servicename)) {
+		return SBC_ERR_NO_SUCH_SERVICE;
+	}
+
+	return ctx->ops->delete_share(ctx, servicename);
+}
+
+/**
+ * set a configuration parameter to the value provided.
+ */
+sbcErr smbconf_set_parameter(struct smbconf_ctx *ctx,
+			     const char *service,
+			     const char *param,
+			     const char *valstr)
+{
+	return ctx->ops->set_parameter(ctx, service, param, valstr);
+}
+
+/**
+ * Set a global parameter
+ * (i.e. a parameter in the [global] service).
+ *
+ * This also creates [global] when it does not exist.
+ */
+sbcErr smbconf_set_global_parameter(struct smbconf_ctx *ctx,
+				    const char *param, const char *val)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+	err = smbconf_set_parameter(ctx, GLOBAL_NAME, param, val);
+
+	return err;
+}
+
+/**
+ * get the value of a configuration parameter as a string
+ */
+sbcErr smbconf_get_parameter(struct smbconf_ctx *ctx,
+			     TALLOC_CTX *mem_ctx,
+			     const char *service,
+			     const char *param,
+			     char **valstr)
+{
+	if (valstr == NULL) {
+		return SBC_ERR_INVALID_PARAM;
+	}
+
+	return ctx->ops->get_parameter(ctx, mem_ctx, service, param, valstr);
+}
+
+/**
+ * Get the value of a global parameter.
+ *
+ * Create [global] if it does not exist.
+ */
+sbcErr smbconf_get_global_parameter(struct smbconf_ctx *ctx,
+				    TALLOC_CTX *mem_ctx,
+				    const char *param,
+				    char **valstr)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+
+	err = smbconf_get_parameter(ctx, mem_ctx, GLOBAL_NAME, param,
+				    valstr);
+
+	return err;
+}
+
+/**
+ * delete a parameter from configuration
+ */
+sbcErr smbconf_delete_parameter(struct smbconf_ctx *ctx,
+				const char *service, const char *param)
+{
+	return ctx->ops->delete_parameter(ctx, service, param);
+}
+
+/**
+ * Delete a global parameter.
+ *
+ * Create [global] if it does not exist.
+ */
+sbcErr smbconf_delete_global_parameter(struct smbconf_ctx *ctx,
+				       const char *param)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+	err = smbconf_delete_parameter(ctx, GLOBAL_NAME, param);
+
+	return err;
+}
+
+sbcErr smbconf_get_includes(struct smbconf_ctx *ctx,
+			    TALLOC_CTX *mem_ctx,
+			    const char *service,
+			    uint32_t *num_includes, char ***includes)
+{
+	return ctx->ops->get_includes(ctx, mem_ctx, service, num_includes,
+				      includes);
+}
+
+sbcErr smbconf_get_global_includes(struct smbconf_ctx *ctx,
+				   TALLOC_CTX *mem_ctx,
+				   uint32_t *num_includes, char ***includes)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+	err = smbconf_get_includes(ctx, mem_ctx, GLOBAL_NAME,
+				    num_includes, includes);
+
+	return err;
+}
+
+sbcErr smbconf_set_includes(struct smbconf_ctx *ctx,
+			    const char *service,
+			    uint32_t num_includes, const char **includes)
+{
+	return ctx->ops->set_includes(ctx, service, num_includes, includes);
+}
+
+sbcErr smbconf_set_global_includes(struct smbconf_ctx *ctx,
+				   uint32_t num_includes,
+				   const char **includes)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+	err = smbconf_set_includes(ctx, GLOBAL_NAME,
+				   num_includes, includes);
+
+	return err;
+}
+
+
+sbcErr smbconf_delete_includes(struct smbconf_ctx *ctx, const char *service)
+{
+	return ctx->ops->delete_includes(ctx, service);
+}
+
+sbcErr smbconf_delete_global_includes(struct smbconf_ctx *ctx)
+{
+	sbcErr err;
+
+	err = smbconf_global_check(ctx);
+	if (!SBC_ERROR_IS_OK(err)) {
+		return err;
+	}
+	err = smbconf_delete_includes(ctx, GLOBAL_NAME);
+
+	return err;
+}
+
+sbcErr smbconf_transaction_start(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->transaction_start(ctx);
+}
+
+sbcErr smbconf_transaction_commit(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->transaction_commit(ctx);
+}
+
+sbcErr smbconf_transaction_cancel(struct smbconf_ctx *ctx)
+{
+	return ctx->ops->transaction_cancel(ctx);
+}