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https://github.com/samba-team/samba.git
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c86038095e
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
469 lines
11 KiB
C
469 lines
11 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* Group Policy Support
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* Copyright (C) Guenther Deschner 2007
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* Copyright (C) Wilco Baan Hofman 2009
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "gpo.h"
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#include "gpo_ini.h"
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#include "system/filesys.h"
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static bool change_section(const char *section, void *ctx_ptr)
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{
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struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
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if (ctx->current_section) {
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talloc_free(ctx->current_section);
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}
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ctx->current_section = talloc_strdup(ctx, section);
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if (!ctx->current_section) {
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return false;
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}
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return true;
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}
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/****************************************************************
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****************************************************************/
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static bool store_keyval_pair(const char *key, const char *value, void *ctx_ptr)
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{
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struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
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ctx->data = talloc_realloc(ctx, ctx->data, struct keyval_pair *, ctx->keyval_count+1);
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if (!ctx->data) {
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return false;
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}
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ctx->data[ctx->keyval_count] = talloc_zero(ctx, struct keyval_pair);
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if (!ctx->data[ctx->keyval_count]) {
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return false;
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}
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ctx->data[ctx->keyval_count]->key = talloc_asprintf(ctx, "%s:%s", ctx->current_section, key);
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ctx->data[ctx->keyval_count]->val = talloc_strdup(ctx, value ? value : "");
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if (!ctx->data[ctx->keyval_count]->key ||
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!ctx->data[ctx->keyval_count]->val) {
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return false;
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}
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ctx->keyval_count++;
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return true;
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}
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/****************************************************************
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****************************************************************/
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static NTSTATUS convert_file_from_ucs2(TALLOC_CTX *mem_ctx,
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const char *filename_in,
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char **filename_out)
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{
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int tmp_fd = -1;
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uint8_t *data_in = NULL;
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uint8_t *data_out = NULL;
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char *tmp_name = NULL;
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NTSTATUS status;
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size_t n = 0;
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size_t converted_size;
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mode_t mask;
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if (!filename_out) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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data_in = (uint8_t *)file_load(filename_in, &n, 0, mem_ctx);
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if (!data_in) {
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status = NT_STATUS_NO_SUCH_FILE;
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goto out;
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}
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DEBUG(11,("convert_file_from_ucs2: "
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"data_in[0]: 0x%x, data_in[1]: 0x%x, data_in[2]: 0x%x\n",
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data_in[0], data_in[1], data_in[2]));
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if ((data_in[0] != 0xff) || (data_in[1] != 0xfe) || (data_in[2] != 0x0d)) {
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*filename_out = NULL;
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status = NT_STATUS_OK;
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goto out;
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}
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tmp_name = talloc_asprintf(mem_ctx, "%s/convert_file_from_ucs2.XXXXXX",
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tmpdir());
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if (!tmp_name) {
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status = NT_STATUS_NO_MEMORY;
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goto out;
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}
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mask = umask(S_IRWXO | S_IRWXG);
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tmp_fd = mkstemp(tmp_name);
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umask(mask);
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if (tmp_fd == -1) {
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status = NT_STATUS_ACCESS_DENIED;
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goto out;
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}
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if (!convert_string_talloc(mem_ctx, CH_UTF16LE, CH_UNIX, data_in, n,
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&data_out, &converted_size))
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{
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status = NT_STATUS_INVALID_BUFFER_SIZE;
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goto out;
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}
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DEBUG(11,("convert_file_from_ucs2: "
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"%s skipping utf16-le BOM\n", tmp_name));
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converted_size -= 3;
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if (write(tmp_fd, data_out + 3, converted_size) != converted_size) {
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status = map_nt_error_from_unix_common(errno);
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goto out;
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}
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*filename_out = tmp_name;
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status = NT_STATUS_OK;
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out:
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if (tmp_fd != -1) {
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close(tmp_fd);
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}
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talloc_free(data_in);
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talloc_free(data_out);
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return status;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_getstring(struct gp_inifile_context *ctx, const char *key, const char **ret)
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{
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int i;
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for (i = 0; i < ctx->keyval_count; i++) {
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if (strcmp(ctx->data[i]->key, key) == 0) {
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if (ret) {
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*ret = ctx->data[i]->val;
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}
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return NT_STATUS_OK;
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}
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}
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return NT_STATUS_NOT_FOUND;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_getint(struct gp_inifile_context *ctx, const char *key, int *ret)
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{
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const char *value;
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NTSTATUS result;
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result = gp_inifile_getstring(ctx,key, &value);
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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if (ret) {
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*ret = (int)strtol(value, NULL, 10);
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}
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return NT_STATUS_OK;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_getbool(struct gp_inifile_context *ctx, const char *key, bool *ret)
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{
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const char *value;
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NTSTATUS result;
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result = gp_inifile_getstring(ctx,key, &value);
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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if (strequal(value, "Yes") ||
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strequal(value, "True")) {
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if (ret) {
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*ret = true;
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}
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return NT_STATUS_OK;
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} else if (strequal(value, "No") ||
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strequal(value, "False")) {
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if (ret) {
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*ret = false;
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}
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return NT_STATUS_OK;
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}
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return NT_STATUS_NOT_FOUND;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_enum_section(struct gp_inifile_context *ctx,
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const char *section,
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size_t *num_ini_keys,
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const char ***ini_keys,
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const char ***ini_values)
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{
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NTSTATUS status;
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int i;
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size_t num_keys = 0, num_vals = 0;
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const char **keys = NULL;
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const char **values = NULL;
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if (section == NULL || num_ini_keys == NULL ||
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ini_keys == NULL || ini_values == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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for (i = 0; i < ctx->keyval_count; i++) {
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bool ok;
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/*
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* section: KEYNAME
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* KEYNAME:value matches
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* KEYNAME_OEM:value not
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*/
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if (strlen(section)+1 > strlen(ctx->data[i]->key)) {
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continue;
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}
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if (!strnequal(section, ctx->data[i]->key, strlen(section))) {
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continue;
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}
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if (ctx->data[i]->key[strlen(section)] != ':') {
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continue;
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}
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ok = add_string_to_array(ctx, ctx->data[i]->key, &keys, &num_keys);
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if (!ok) {
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status = NT_STATUS_NO_MEMORY;
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goto failed;
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}
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ok = add_string_to_array(ctx, ctx->data[i]->val, &values, &num_vals);
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if (!ok) {
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status = NT_STATUS_NO_MEMORY;
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goto failed;
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}
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if (num_keys != num_vals) {
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto failed;
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}
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}
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*num_ini_keys = num_keys;
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*ini_keys = keys;
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*ini_values = values;
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return NT_STATUS_OK;
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failed:
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talloc_free(keys);
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talloc_free(values);
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return status;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_init_context(TALLOC_CTX *mem_ctx,
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uint32_t flags,
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const char *unix_path,
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const char *suffix,
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struct gp_inifile_context **ctx_ret)
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{
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struct gp_inifile_context *ctx = NULL;
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NTSTATUS status;
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int rv;
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char *tmp_filename = NULL;
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const char *ini_filename = NULL;
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if (!unix_path || !ctx_ret) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
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NT_STATUS_HAVE_NO_MEMORY(ctx);
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status = gp_find_file(mem_ctx, flags, unix_path, suffix,
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&ini_filename);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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status = convert_file_from_ucs2(mem_ctx, ini_filename,
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&tmp_filename);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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rv = pm_process(tmp_filename != NULL ? tmp_filename : ini_filename,
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change_section, store_keyval_pair, ctx);
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if (!rv) {
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return NT_STATUS_NO_SUCH_FILE;
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}
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ctx->generated_filename = tmp_filename;
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ctx->mem_ctx = mem_ctx;
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*ctx_ret = ctx;
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return NT_STATUS_OK;
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failed:
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DEBUG(1,("gp_inifile_init_context failed: %s\n",
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nt_errstr(status)));
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talloc_free(ctx);
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return status;
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}
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/****************************************************************
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****************************************************************/
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NTSTATUS gp_inifile_init_context_direct(TALLOC_CTX *mem_ctx,
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const char *unix_path,
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struct gp_inifile_context **pgp_ctx)
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{
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struct gp_inifile_context *gp_ctx = NULL;
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NTSTATUS status;
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bool rv;
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char *tmp_filename = NULL;
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if (unix_path == NULL || pgp_ctx == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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gp_ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
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if (gp_ctx == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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status = convert_file_from_ucs2(mem_ctx, unix_path,
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&tmp_filename);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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rv = pm_process_with_flags(tmp_filename != NULL ? tmp_filename : unix_path,
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true,
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change_section,
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store_keyval_pair,
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gp_ctx);
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if (!rv) {
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return NT_STATUS_NO_SUCH_FILE;
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}
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gp_ctx->generated_filename = tmp_filename;
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gp_ctx->mem_ctx = mem_ctx;
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*pgp_ctx = gp_ctx;
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return NT_STATUS_OK;
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failed:
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DEBUG(1,("gp_inifile_init_context_direct failed: %s\n",
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nt_errstr(status)));
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talloc_free(gp_ctx);
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return status;
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}
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/****************************************************************
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parse the local gpt.ini file
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****************************************************************/
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#define GPT_INI_SECTION_GENERAL "General"
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#define GPT_INI_PARAMETER_VERSION "Version"
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#define GPT_INI_PARAMETER_DISPLAYNAME "displayName"
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NTSTATUS parse_gpt_ini(TALLOC_CTX *mem_ctx,
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const char *filename,
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uint32_t *version,
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char **display_name)
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{
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NTSTATUS result;
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int rv;
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int v = 0;
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const char *name = NULL;
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struct gp_inifile_context *ctx;
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if (!filename) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
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NT_STATUS_HAVE_NO_MEMORY(ctx);
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rv = pm_process(filename, change_section, store_keyval_pair, ctx);
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if (!rv) {
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return NT_STATUS_NO_SUCH_FILE;
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}
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result = gp_inifile_getstring(ctx, GPT_INI_SECTION_GENERAL
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":"GPT_INI_PARAMETER_DISPLAYNAME, &name);
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if (!NT_STATUS_IS_OK(result)) {
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/* the default domain policy and the default domain controller
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* policy never have a displayname in their gpt.ini file */
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DEBUG(10,("parse_gpt_ini: no name in %s\n", filename));
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}
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if (name && display_name) {
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*display_name = talloc_strdup(ctx, name);
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if (*display_name == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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}
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result = gp_inifile_getint(ctx, GPT_INI_SECTION_GENERAL
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":"GPT_INI_PARAMETER_VERSION, &v);
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if (!NT_STATUS_IS_OK(result)) {
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DEBUG(10,("parse_gpt_ini: no version\n"));
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return NT_STATUS_INTERNAL_DB_CORRUPTION;
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}
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if (version) {
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*version = v;
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}
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talloc_free(ctx);
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return NT_STATUS_OK;
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}
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