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394 lines
8.8 KiB
394 lines
8.8 KiB
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2013
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* read a config file
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*/
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#include "arch.h"
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#include "os_calls.h"
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#include "list.h"
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#include "file.h"
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#include "parse.h"
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/*****************************************************************************/
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/* returns error
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returns 0 if everything is ok
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returns 1 if problem reading file */
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static int APP_CC
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l_file_read_sections(int fd, int max_file_size, struct list *names)
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{
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struct stream *s;
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char text[256];
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char c;
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int in_it;
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int in_it_index;
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int len;
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int index;
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int rv;
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rv = 0;
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g_file_seek(fd, 0);
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in_it_index = 0;
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in_it = 0;
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g_memset(text, 0, 256);
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list_clear(names);
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make_stream(s);
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init_stream(s, max_file_size);
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len = g_file_read(fd, s->data, max_file_size);
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if (len > 0)
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{
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s->end = s->p + len;
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for (index = 0; index < len; index++)
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{
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in_uint8(s, c);
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if (c == '[')
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{
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in_it = 1;
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}
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else if (c == ']')
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{
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list_add_item(names, (tbus)g_strdup(text));
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in_it = 0;
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in_it_index = 0;
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g_memset(text, 0, 256);
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}
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else if (in_it)
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{
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text[in_it_index] = c;
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in_it_index++;
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}
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}
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}
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else if (len < 0)
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{
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rv = 1;
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}
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free_stream(s);
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return rv;
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}
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/*****************************************************************************/
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static int APP_CC
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file_read_line(struct stream *s, char *text)
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{
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int i;
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int skip_to_end;
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int at_end;
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char c;
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char *hold;
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skip_to_end = 0;
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if (!s_check_rem(s, 1))
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{
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return 1;
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}
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hold = s->p;
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i = 0;
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in_uint8(s, c);
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while (c != 10 && c != 13)
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{
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if (c == '#' || c == '!' || c == ';')
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{
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skip_to_end = 1;
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}
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if (!skip_to_end)
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{
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text[i] = c;
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i++;
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}
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if (s_check_rem(s, 1))
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{
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in_uint8(s, c);
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}
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else
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{
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c = 0;
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break;
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}
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}
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if (c == 10 || c == 13)
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{
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at_end = 0;
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while (c == 10 || c == 13)
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{
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if (s_check_rem(s, 1))
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{
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in_uint8(s, c);
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}
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else
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{
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at_end = 1;
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break;
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}
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}
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if (!at_end)
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{
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s->p--;
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}
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}
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text[i] = 0;
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if (text[0] == '[')
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{
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s->p = hold;
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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static int APP_CC
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file_split_name_value(char *text, char *name, char *value)
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{
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int len;
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int i;
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int value_index;
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int name_index;
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int on_to;
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value_index = 0;
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name_index = 0;
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on_to = 0;
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name[0] = 0;
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value[0] = 0;
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len = g_strlen(text);
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for (i = 0; i < len; i++)
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{
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if (text[i] == '=')
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{
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on_to = 1;
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}
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else if (on_to)
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{
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value[value_index] = text[i];
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value_index++;
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value[value_index] = 0;
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}
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else
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{
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name[name_index] = text[i];
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name_index++;
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name[name_index] = 0;
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}
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}
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g_strtrim(name, 3); /* trim both right and left */
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g_strtrim(value, 3); /* trim both right and left */
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return 0;
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}
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/*****************************************************************************/
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/* return error */
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static int APP_CC
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l_file_read_section(int fd, int max_file_size, const char *section,
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struct list *names, struct list *values)
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{
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struct stream *s;
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char text[512];
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char name[512];
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char value[512];
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char *lvalue;
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char c;
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int in_it;
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int in_it_index;
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int len;
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int index;
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int file_size;
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file_size = 32 * 1024; /* 32 K file size limit */
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g_file_seek(fd, 0);
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in_it_index = 0;
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in_it = 0;
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g_memset(text, 0, 512);
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list_clear(names);
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list_clear(values);
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make_stream(s);
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init_stream(s, file_size);
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len = g_file_read(fd, s->data, file_size);
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if (len > 0)
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{
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s->end = s->p + len;
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for (index = 0; index < len; index++)
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{
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if (!s_check_rem(s, 1))
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{
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break;
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}
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in_uint8(s, c);
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if ((c == '#') || (c == ';'))
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{
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file_read_line(s, text);
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in_it = 0;
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in_it_index = 0;
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g_memset(text, 0, 512);
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continue;
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}
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if (c == '[')
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{
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in_it = 1;
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}
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else if (c == ']')
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{
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if (g_strcasecmp(section, text) == 0)
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{
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file_read_line(s, text);
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while (file_read_line(s, text) == 0)
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{
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if (g_strlen(text) > 0)
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{
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file_split_name_value(text, name, value);
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list_add_item(names, (tbus)g_strdup(name));
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if (value[0] == '$')
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{
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lvalue = g_getenv(value + 1);
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if (lvalue != 0)
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{
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list_add_item(values, (tbus)g_strdup(lvalue));
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}
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else
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{
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list_add_item(values, (tbus)g_strdup(""));
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}
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}
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else
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{
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list_add_item(values, (tbus)g_strdup(value));
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}
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}
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}
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free_stream(s);
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return 0;
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}
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in_it = 0;
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in_it_index = 0;
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g_memset(text, 0, 512);
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}
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else if (in_it)
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{
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text[in_it_index] = c;
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in_it_index++;
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}
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}
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}
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free_stream(s);
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return 1;
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}
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/*****************************************************************************/
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/* returns error
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returns 0 if everything is ok
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returns 1 if problem reading file */
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/* 32 K file size limit */
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int APP_CC
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file_read_sections(int fd, struct list *names)
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{
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return l_file_read_sections(fd, 32 * 1024, names);
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}
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/*****************************************************************************/
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/* return error */
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/* this function should be prefered over file_read_sections because it can
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read any file size */
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int APP_CC
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file_by_name_read_sections(const char *file_name, struct list *names)
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{
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int fd;
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int file_size;
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int rv;
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file_size = g_file_get_size(file_name);
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if (file_size < 1)
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{
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return 1;
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}
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fd = g_file_open(file_name);
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if (fd < 1)
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{
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return 1;
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}
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rv = l_file_read_sections(fd, file_size, names);
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g_file_close(fd);
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return rv;
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}
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/*****************************************************************************/
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/* return error */
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/* 32 K file size limit */
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int APP_CC
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file_read_section(int fd, const char *section,
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struct list *names, struct list *values)
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{
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return l_file_read_section(fd, 32 * 1024, section, names, values);
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}
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/*****************************************************************************/
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/* return error */
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/* this function should be prefered over file_read_section because it can
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read any file size */
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int APP_CC
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file_by_name_read_section(const char *file_name, const char *section,
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struct list *names, struct list *values)
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{
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int fd;
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int file_size;
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int rv;
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file_size = g_file_get_size(file_name);
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if (file_size < 1)
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{
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return 1;
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}
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fd = g_file_open(file_name);
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if (fd < 1)
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{
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return 1;
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}
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rv = l_file_read_section(fd, file_size, section, names, values);
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g_file_close(fd);
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return rv;
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}
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