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/*
* Copyright 1999-2014 University of Chicago
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file array_from_string.c
* @brief globus_net_manager_attr_array_from_string()
*/
#include "globus_net_manager_attr.h"
#include "globus_net_manager.h"
/**
* @brief Parse an array of Network Manager attributes from a string
* @ingroup globus_net_manager_attr
* @details
* This function parses a string containing a list
* of attributes and creates a new array of Network Manager attribute
* values from it. The array is terminated by globus_net_manager_null_attr.
*
* Attribute strings are formed by the regular expression
@verbatim
NAME=VALUE(;NAME=VALUE)*
@endverbatim
* The NAME and VALUE strings may contain any character except <code>;</code>
* <code>=</code>, and the carriage return and newline characters.
*
* The caller must free the array stored in *attr by calling
* globus_net_manager_attr_array_destroy().
*
* @param[out] attr
* A pointer to an array of attributes to be allocated and initialized.
* @param[in] scope
* The string to be added as the scope value of the attributes.
* @param[in] attr_string
* The string to be parsed.
*
* @return
* On success, this function returns GLOBUS_SUCCESS. Otherwise, an
* error result is returned to the caller.
*/
globus_result_t
globus_net_manager_attr_array_from_string(
globus_net_manager_attr_t **attr,
const char *scope,
const char *attr_string)
{
globus_result_t result = GLOBUS_SUCCESS;
globus_list_t *attr_string_list = NULL;
int attr_string_list_size = 0;
globus_net_manager_attr_t *attr_array = NULL;
int i = 0;
if (attr == NULL)
{
result = GlobusNetManagerErrorParameter("NULL attr.");
goto bad_attr_param;
}
if (scope == NULL || attr_string == NULL)
{
result = GlobusNetManagerErrorParameter("NULL scope or attr_string.");
goto bad_param;
}
if (strchr(attr_string, '\r') || strchr(attr_string, '\n'))
{
result = GlobusNetManagerErrorParameter(
"CR and LF are not allowed in attr_string.");
goto illegal_string;
}
attr_string_list = globus_list_from_string(attr_string, ';', NULL);
if (attr_string_list == NULL)
{
if (strlen(attr_string) > 0)
{
result = GlobusNetManagerErrorParameter("Invalid attr_string.");
}
goto no_attrs;
}
attr_string_list_size = globus_list_size(attr_string_list);
attr_array = calloc(
attr_string_list_size + 1,
sizeof(globus_net_manager_attr_t));
if (attr_array == NULL)
{
result = GlobusNetManagerErrorMemory("attr_array");
goto attr_array_malloc_fail;
}
while (!globus_list_empty(attr_string_list))
{
char *attr_name = NULL;
char *attr_value = NULL;
attr_name = globus_list_remove(
&attr_string_list, attr_string_list);
if (*attr_name == '\0')
{
attr_string_list_size--;
attr_array[attr_string_list_size - 1] =
globus_net_manager_null_attr;
free(attr_name);
continue;
}
attr_value = strchr(attr_name, '=');
if (!attr_value)
{
free(attr_name);
result = GlobusNetManagerErrorParameter("Invalid attr_string.");
goto bad_attr;
}
*attr_value++ = '\0';
if (*attr_value == '\0')
{
free(attr_name);
result = GlobusNetManagerErrorParameter("Empty value in attr_string.");
goto bad_value;
}
attr_array[attr_string_list_size - i - 1].scope = strdup(scope);
if (attr_array[attr_string_list_size - i - 1].scope == NULL)
{
free(attr_name);
result = GlobusNetManagerErrorMemory("scope");
goto strdup_scope_fail;
}
attr_array[attr_string_list_size - i - 1].name = attr_name;
attr_array[attr_string_list_size - i - 1].value = strdup(attr_value);
if (attr_array[attr_string_list_size - i - 1].value == NULL)
{
result = GlobusNetManagerErrorMemory("attr_value");
free(attr_array[attr_string_list_size - i - 1].scope);
free(attr_array[attr_string_list_size - i - 1].name);
free(attr_array[attr_string_list_size - i - 1].value);
goto strdup_value_fail;
}
i++;
}
strdup_value_fail:
strdup_scope_fail:
bad_value:
bad_attr:
attr_array[i] = globus_net_manager_null_attr;
if (result)
{
if (i > 0)
{
for (int j = i - 1; j >= 0; j--)
{
free(attr_array[j].scope);
free(attr_array[j].name);
free(attr_array[j].value);
}
}
free(attr_array);
attr_array = NULL;
}
attr_array_malloc_fail:
globus_list_destroy_all(attr_string_list, free);
no_attrs:
illegal_string:
bad_param:
*attr = attr_array;
bad_attr_param:
return result;
}
/* globus_net_manager_attr_array_from_string() */
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