Move gpo_ini stuff to the main libgpo. Make gpo_ini use a common parser.

It now makes use of lib/util/param.c to parse ini files.

Signed-off-by: Günther Deschner <gd@samba.org>

1 files changed, 269 insertions, 0 deletions

diff --git a/libgpo/gpo_ini.c b/libgpo/gpo_ini.c
new file mode 100644
index 00000000000..79bf5fd8d83
--- /dev/null
+++ b/libgpo/gpo_ini.c
@@ -0,0 +1,269 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Group Policy Support
+ *  Copyright (C) Guenther Deschner 2007
+ *  Copyright (C) Wilco Baan Hofman 2009
+ *
+ *  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 "gpo.h"
+#include "gpo_ini.h"
+#include "system/filesys.h"
+
+
+static bool change_section(const char *section, void *ctx_ptr)
+{
+	struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
+
+	if (ctx->current_section) {
+		talloc_free(ctx->current_section);
+	}
+	ctx->current_section = talloc_strdup(ctx, section);
+	return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static bool store_keyval_pair(const char *key, const char *value, void *ctx_ptr)
+{
+	struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
+	ctx->data = talloc_realloc(ctx, ctx->data, struct keyval_pair *, ctx->keyval_count+1);
+	ctx->data[ctx->keyval_count]->key = talloc_asprintf(ctx, "%s:%s", ctx->current_section, key);
+	ctx->data[ctx->keyval_count]->val = talloc_strdup(ctx, value);
+	ctx->keyval_count++;
+	return true;
+}
+
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS convert_file_from_ucs2(TALLOC_CTX *mem_ctx,
+				       const char *filename_in,
+				       char **filename_out)
+{
+	int tmp_fd = -1;
+	uint8_t *data_in = NULL;
+	uint8_t *data_out = NULL;
+	char *tmp_name = NULL;
+	NTSTATUS status;
+	size_t n = 0;
+	size_t converted_size;
+
+	if (!filename_out) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	data_in = (uint8_t *)file_load(filename_in, &n, 0, NULL);
+	if (!data_in) {
+		status = NT_STATUS_NO_SUCH_FILE;
+		goto out;
+	}
+
+	tmp_name = talloc_asprintf(mem_ctx, "%s/convert_file_from_ucs2.XXXXXX",
+		tmpdir());
+	if (!tmp_name) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	tmp_fd = mkstemp(tmp_name);
+	if (tmp_fd == -1) {
+		status = NT_STATUS_ACCESS_DENIED;
+		goto out;
+	}
+
+	if (!convert_string_talloc(mem_ctx, CH_UTF16LE, CH_UNIX, data_in, n,
+				   (void **)&data_out, &converted_size, false))
+	{
+		status = NT_STATUS_INVALID_BUFFER_SIZE;
+		goto out;
+	}
+
+	/* skip utf8 BOM */
+	DEBUG(11,("convert_file_from_ucs2: "
+	       "data_out[0]: 0x%x, data_out[1]: 0x%x, data_out[2]: 0x%x\n",
+		data_out[0], data_out[1], data_out[2]));
+
+	if ((data_out[0] == 0xef) && (data_out[1] == 0xbb) &&
+	    (data_out[2] == 0xbf)) {
+		DEBUG(11,("convert_file_from_ucs2: "
+			 "%s skipping utf8 BOM\n", tmp_name));
+		data_out += 3;
+		converted_size -= 3;
+	}
+
+	if (write(tmp_fd, data_out, converted_size) != converted_size) {
+		status = map_nt_error_from_unix(errno);
+		goto out;
+	}
+
+	*filename_out = tmp_name;
+
+	status = NT_STATUS_OK;
+
+ out:
+	if (tmp_fd != -1) {
+		close(tmp_fd);
+	}
+
+	talloc_free(data_in);
+
+	return status;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gp_inifile_getstring(struct gp_inifile_context *ctx, const char *key, char **ret)
+{
+	int i;
+
+	for (i = 0; i < ctx->keyval_count; i++) {
+		if (strcmp(ctx->data[i]->key, key) == 0) {
+			*ret = ctx->data[i]->val;
+			return NT_STATUS_OK;
+		}
+	}
+	return NT_STATUS_NOT_FOUND;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gp_inifile_getint(struct gp_inifile_context *ctx, const char *key, int *ret)
+{
+	char *value;
+	NTSTATUS result;
+
+	result = gp_inifile_getstring(ctx,key, &value);
+	if (!NT_STATUS_IS_OK(result)) {
+		return result;
+	}
+
+	*ret = (int)strtol(value, NULL, 10);
+	return NT_STATUS_OK;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS gp_inifile_init_context(TALLOC_CTX *mem_ctx,
+				 uint32_t flags,
+				 const char *unix_path,
+				 const char *suffix,
+				 struct gp_inifile_context **ctx_ret)
+{
+	struct gp_inifile_context *ctx = NULL;
+	NTSTATUS status;
+	char *tmp_filename = NULL;
+	const char *ini_filename = NULL;
+
+	if (!unix_path || !ctx_ret) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
+	NT_STATUS_HAVE_NO_MEMORY(ctx);
+
+	status = gp_find_file(mem_ctx, flags, unix_path, suffix,
+			      &ini_filename);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	status = convert_file_from_ucs2(mem_ctx, ini_filename,
+					&tmp_filename);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	ctx->generated_filename = tmp_filename;
+	ctx->mem_ctx = mem_ctx;
+
+	*ctx_ret = ctx;
+
+	return NT_STATUS_OK;
+
+ failed:
+
+	DEBUG(1,("gp_inifile_init_context failed: %s\n",
+		nt_errstr(status)));
+
+	talloc_free(ctx);
+
+	return status;
+}
+
+/****************************************************************
+ parse the local gpt.ini file
+****************************************************************/
+
+#define GPT_INI_SECTION_GENERAL "General"
+#define GPT_INI_PARAMETER_VERSION "Version"
+#define GPT_INI_PARAMETER_DISPLAYNAME "displayName"
+
+NTSTATUS parse_gpt_ini(struct gp_inifile_context *ctx,
+		       const char *filename,
+		       uint32_t *version,
+		       char **display_name)
+{
+	NTSTATUS result;
+	int rv;
+	int v = 0;
+	char *name = NULL;
+
+	if (!filename) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	rv = pm_process(filename, change_section, store_keyval_pair, NULL);
+	if (!rv) {
+		return NT_STATUS_NO_SUCH_FILE;
+	}
+
+
+	result = gp_inifile_getstring(ctx, GPT_INI_SECTION_GENERAL
+			":"GPT_INI_PARAMETER_DISPLAYNAME, &name);
+	if (!NT_STATUS_IS_OK(result)) {
+		/* the default domain policy and the default domain controller
+		 * policy never have a displayname in their gpt.ini file */
+		DEBUG(10,("parse_gpt_ini: no name in %s\n", filename));
+	}
+
+	if (name && display_name) {
+		*display_name = talloc_strdup(ctx, name);
+		if (*display_name == NULL) {
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	result = gp_inifile_getint(ctx, GPT_INI_SECTION_GENERAL
+			":"GPT_INI_PARAMETER_VERSION, &v);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(10,("parse_gpt_ini: no version\n"));
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	if (version) {
+		*version = v;
+	}
+
+	result = NT_STATUS_OK;
+
+	return result;
+}