mirror of
https://github.com/sheumann/hush.git
synced 2024-11-19 08:31:11 +00:00
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) many different people.
|
|
* If you wrote this, please acknowledge your work.
|
|
*
|
|
* 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 2 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "libbb.h"
|
|
|
|
/*
|
|
* Gets the next package field from package_buffer, seperated into the field name
|
|
* and field value, it returns the int offset to the first character of the next field
|
|
*/
|
|
int read_package_field(const char *package_buffer, char **field_name, char **field_value)
|
|
{
|
|
int offset_name_start = 0;
|
|
int offset_name_end = 0;
|
|
int offset_value_start = 0;
|
|
int offset_value_end = 0;
|
|
int offset = 0;
|
|
int next_offset;
|
|
int name_length;
|
|
int value_length;
|
|
int exit_flag = FALSE;
|
|
|
|
if (package_buffer == NULL) {
|
|
*field_name = NULL;
|
|
*field_value = NULL;
|
|
return(-1);
|
|
}
|
|
while (1) {
|
|
next_offset = offset + 1;
|
|
switch (package_buffer[offset]) {
|
|
case('\0'):
|
|
exit_flag = TRUE;
|
|
break;
|
|
case(':'):
|
|
if (offset_name_end == 0) {
|
|
offset_name_end = offset;
|
|
offset_value_start = next_offset;
|
|
}
|
|
/* TODO: Name might still have trailing spaces if ':' isnt
|
|
* immediately after name */
|
|
break;
|
|
case('\n'):
|
|
/* TODO: The char next_offset may be out of bounds */
|
|
if (package_buffer[next_offset] != ' ') {
|
|
exit_flag = TRUE;
|
|
break;
|
|
}
|
|
case('\t'):
|
|
case(' '):
|
|
/* increment the value start point if its a just filler */
|
|
if (offset_name_start == offset) {
|
|
offset_name_start++;
|
|
}
|
|
if (offset_value_start == offset) {
|
|
offset_value_start++;
|
|
}
|
|
break;
|
|
}
|
|
if (exit_flag) {
|
|
/* Check that the names are valid */
|
|
offset_value_end = offset;
|
|
name_length = offset_name_end - offset_name_start;
|
|
value_length = offset_value_end - offset_value_start;
|
|
if (name_length == 0) {
|
|
break;
|
|
}
|
|
if ((name_length > 0) && (value_length > 0)) {
|
|
break;
|
|
}
|
|
|
|
/* If not valid, start fresh with next field */
|
|
exit_flag = FALSE;
|
|
offset_name_start = offset + 1;
|
|
offset_name_end = 0;
|
|
offset_value_start = offset + 1;
|
|
offset_value_end = offset + 1;
|
|
offset++;
|
|
}
|
|
offset++;
|
|
}
|
|
if (name_length == 0) {
|
|
*field_name = NULL;
|
|
} else {
|
|
*field_name = bb_xstrndup(&package_buffer[offset_name_start], name_length);
|
|
}
|
|
if (value_length > 0) {
|
|
*field_value = bb_xstrndup(&package_buffer[offset_value_start], value_length);
|
|
} else {
|
|
*field_value = NULL;
|
|
}
|
|
return(next_offset);
|
|
}
|
|
|