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/*
* libuci - Library for the Unified Configuration Interface
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* 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.
*/
/*
* This file contains wrappers to standard functions, which
* throw exceptions upon failure.
*/
#include <stdbool.h>
#include <ctype.h>
static void *uci_malloc(struct uci_context *ctx, size_t size)
{
void *ptr;
ptr = malloc(size);
if (!ptr)
UCI_THROW(ctx, UCI_ERR_MEM);
memset(ptr, 0, size);
return ptr;
}
static void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size)
{
ptr = realloc(ptr, size);
if (!ptr)
UCI_THROW(ctx, UCI_ERR_MEM);
return ptr;
}
static char *uci_strdup(struct uci_context *ctx, const char *str)
{
char *ptr;
ptr = strdup(str);
if (!ptr)
UCI_THROW(ctx, UCI_ERR_MEM);
return ptr;
}
static bool uci_validate_name(const char *str)
{
if (!*str)
return false;
while (*str) {
if (!isalnum(*str) && (*str != '_'))
return false;
str++;
}
return true;
}
int uci_parse_tuple(struct uci_context *ctx, char *str, char **package, char **section, char **option, char **value)
{
char *last = NULL;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, str && package && section && option);
*package = strtok(str, ".");
if (!*package || !uci_validate_name(*package))
goto error;
last = *package;
*section = strtok(NULL, ".");
if (!*section)
goto lastval;
last = *section;
*option = strtok(NULL, ".");
if (!*option)
goto lastval;
last = *option;
lastval:
last = strchr(last, '=');
if (last) {
if (!value)
goto error;
*last = 0;
last++;
if (!*last)
goto error;
*value = last;
}
if (*section && !uci_validate_name(*section))
goto error;
if (*option && !uci_validate_name(*option))
goto error;
goto done;
error:
UCI_THROW(ctx, UCI_ERR_PARSE);
done:
return 0;
}
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