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/*
This file is part of GNUnet
Copyright (C) 2012-2022 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet 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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
#include "gnunet_error_codes.h"
#include <stddef.h>
#include <microhttpd.h>
#include <gettext.h>
/**
* MHD does not define our value for 0 (client-side generated code).
*/
#define MHD_HTTP_UNINITIALIZED 0
/**
* A pair containing an error code and its hint.
*/
struct ErrorCodeAndHint
{
/**
* The error code.
*/
enum GNUNET_ErrorCode ec;
/**
* The hint.
*/
const char *hint;
/**
* The HTTP status code.
*/
unsigned int http_code;
};
/**
* The list of all error codes with their hints.
*/
static const struct ErrorCodeAndHint code_hint_pairs[] = {
{
.ec = GNUNET_EC_NONE,
.hint = gettext_noop ("No error (success)."),
.http_code = MHD_HTTP_UNINITIALIZED
},
{
.ec = GNUNET_EC_UNKNOWN,
.hint = gettext_noop ("Unknown and unspecified error."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_SERVICE_COMMUNICATION_FAILED,
.hint = gettext_noop ("Communication with service failed."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_IDENTITY_NOT_FOUND,
.hint = gettext_noop ("Ego not found."),
.http_code = MHD_HTTP_NOT_FOUND
},
{
.ec = GNUNET_EC_IDENTITY_NAME_CONFLICT,
.hint = gettext_noop ("Identifier already in use for another ego."),
.http_code = MHD_HTTP_CONFLICT
},
{
.ec = GNUNET_EC_IDENTITY_INVALID,
.hint = gettext_noop ("The given ego is invalid or malformed."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_UNKNOWN,
.hint = gettext_noop ("Unknown namestore error."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_ITERATION_FAILED,
.hint = gettext_noop ("Zone iteration failed."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_ZONE_NOT_FOUND,
.hint = gettext_noop ("Zone not found."),
.http_code = MHD_HTTP_NOT_FOUND
},
{
.ec = GNUNET_EC_NAMESTORE_RECORD_NOT_FOUND,
.hint = gettext_noop ("Record not found."),
.http_code = MHD_HTTP_NOT_FOUND
},
{
.ec = GNUNET_EC_NAMESTORE_RECORD_DELETE_FAILED,
.hint = gettext_noop ("Zone iteration failed."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_ZONE_EMPTY,
.hint = gettext_noop ("Zone does not contain any records."),
.http_code = MHD_HTTP_NOT_FOUND
},
{
.ec = GNUNET_EC_NAMESTORE_LOOKUP_ERROR,
.hint = gettext_noop ("Failed to lookup record."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_NO_RECORDS_GIVEN,
.hint = gettext_noop ("No records given."),
.http_code = MHD_HTTP_BAD_REQUEST
},
{
.ec = GNUNET_EC_NAMESTORE_RECORD_DATA_INVALID,
.hint = gettext_noop ("Record data invalid."),
.http_code = MHD_HTTP_BAD_REQUEST
},
{
.ec = GNUNET_EC_NAMESTORE_NO_LABEL_GIVEN,
.hint = gettext_noop ("No label given."),
.http_code = MHD_HTTP_BAD_REQUEST
},
{
.ec = GNUNET_EC_NAMESTORE_NO_RESULTS,
.hint = gettext_noop ("No results given."),
.http_code = MHD_HTTP_NOT_FOUND
},
{
.ec = GNUNET_EC_NAMESTORE_RECORD_EXISTS,
.hint = gettext_noop ("Record already exists."),
.http_code = MHD_HTTP_CONFLICT
},
{
.ec = GNUNET_EC_NAMESTORE_RECORD_TOO_BIG,
.hint = gettext_noop ("Record size exceeds maximum limit."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_BACKEND_FAILED,
.hint = gettext_noop ("There was an error in the database backend."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_STORE_FAILED,
.hint = gettext_noop ("Failed to store the given records."),
.http_code = MHD_HTTP_INTERNAL_SERVER_ERROR
},
{
.ec = GNUNET_EC_NAMESTORE_LABEL_INVALID,
.hint = gettext_noop ("Label invalid or malformed."),
.http_code = MHD_HTTP_BAD_REQUEST
},
};
/**
* The length of @e code_hint_pairs.
*/
static const unsigned int code_hint_pairs_length = 22;
const char *
GNUNET_ErrorCode_get_hint (enum GNUNET_ErrorCode ec)
{
unsigned int lower = 0;
unsigned int upper = code_hint_pairs_length - 1;
unsigned int mid = upper / 2;
while (lower <= upper)
{
mid = (upper + lower) / 2;
if (code_hint_pairs[mid].ec < ec)
{
lower = mid + 1;
}
else if (code_hint_pairs[mid].ec > ec)
{
upper = mid - 1;
}
else
{
return code_hint_pairs[mid].hint;
}
}
return "<no hint found>";
}
unsigned int
GNUNET_ErrorCode_get_http_status (enum GNUNET_ErrorCode ec)
{
unsigned int lower = 0;
unsigned int upper = code_hint_pairs_length - 1;
unsigned int mid = upper / 2;
while (lower <= upper)
{
mid = (upper + lower) / 2;
if (code_hint_pairs[mid].ec < ec)
{
lower = mid + 1;
}
else if (code_hint_pairs[mid].ec > ec)
{
upper = mid - 1;
}
else
{
return code_hint_pairs[mid].http_code;
}
}
return UINT_MAX;
}
unsigned int
GNUNET_ErrorCode_get_http_status_safe (enum GNUNET_ErrorCode ec)
{
unsigned int hc;
hc = GNUNET_ErrorCode_get_http_status (ec);
if ( (0 == hc) ||
(UINT_MAX == hc) )
return MHD_HTTP_INTERNAL_SERVER_ERROR;
return hc;
}
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