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/** **************************************************************************
* error_parser.c
*
* Copyright 2008 Bryan Ischo <bryan@ischo.com>
*
* This file is part of libs3.
*
* libs3 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, version 3 of the License.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this library and its programs with the
* OpenSSL library, and distribute linked combinations including the two.
*
* libs3 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 version 3
* along with libs3, in a file named COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
************************************************************************** **/
#include <string.h>
#include "error_parser.h"
static S3Status errorXmlCallback(const char *elementPath, const char *data,
int dataLen, void *callbackData)
{
// We ignore end of element callbacks because we don't care about them
if (!data) {
return S3StatusOK;
}
ErrorParser *errorParser = (ErrorParser *) callbackData;
int fit;
if (!strcmp(elementPath, "Error")) {
// Ignore, this is the Error element itself, we only care about subs
}
else if (!strcmp(elementPath, "Error/Code")) {
string_buffer_append(errorParser->code, data, dataLen, fit);
}
else if (!strcmp(elementPath, "Error/Message")) {
string_buffer_append(errorParser->message, data, dataLen, fit);
errorParser->s3ErrorDetails.message = errorParser->message;
}
else if (!strcmp(elementPath, "Error/Resource")) {
string_buffer_append(errorParser->resource, data, dataLen, fit);
errorParser->s3ErrorDetails.resource = errorParser->resource;
}
else if (!strcmp(elementPath, "Error/FurtherDetails")) {
string_buffer_append(errorParser->furtherDetails, data, dataLen, fit);
errorParser->s3ErrorDetails.furtherDetails =
errorParser->furtherDetails;
}
else {
if (strncmp(elementPath, "Error/", sizeof("Error/") - 1)) {
// If for some weird reason it's not within the Error element,
// ignore it
return S3StatusOK;
}
// It's an unknown error element. See if it matches the most
// recent error element.
const char *elementName = &(elementPath[sizeof("Error/") - 1]);
if (errorParser->s3ErrorDetails.extraDetailsCount &&
!strcmp(elementName, errorParser->s3ErrorDetails.extraDetails
[errorParser->s3ErrorDetails.extraDetailsCount - 1].name)) {
// Append the value
string_multibuffer_append(errorParser->extraDetailsNamesValues,
data, dataLen, fit);
// If it didn't fit, remove this extra
if (!fit) {
errorParser->s3ErrorDetails.extraDetailsCount--;
}
return S3StatusOK;
}
// OK, must add another unknown error element, if it will fit.
if (errorParser->s3ErrorDetails.extraDetailsCount ==
sizeof(errorParser->extraDetails)) {
// Won't fit. Ignore this one.
return S3StatusOK;
}
// Copy in the name and value
char *name = string_multibuffer_current
(errorParser->extraDetailsNamesValues);
int nameLen = strlen(elementName);
string_multibuffer_add(errorParser->extraDetailsNamesValues,
elementName, nameLen, fit);
if (!fit) {
// Name didn't fit; ignore this one.
return S3StatusOK;
}
char *value = string_multibuffer_current
(errorParser->extraDetailsNamesValues);
string_multibuffer_add(errorParser->extraDetailsNamesValues,
data, dataLen, fit);
if (!fit) {
// Value didn't fit; ignore this one.
return S3StatusOK;
}
S3NameValue *nv =
&(errorParser->extraDetails
[errorParser->s3ErrorDetails.extraDetailsCount++]);
nv->name = name;
nv->value = value;
}
return S3StatusOK;
}
void error_parser_initialize(ErrorParser *errorParser)
{
errorParser->s3ErrorDetails.message = 0;
errorParser->s3ErrorDetails.resource = 0;
errorParser->s3ErrorDetails.furtherDetails = 0;
errorParser->s3ErrorDetails.extraDetailsCount = 0;
errorParser->s3ErrorDetails.extraDetails = errorParser->extraDetails;
errorParser->errorXmlParserInitialized = 0;
string_buffer_initialize(errorParser->code);
string_buffer_initialize(errorParser->message);
string_buffer_initialize(errorParser->resource);
string_buffer_initialize(errorParser->furtherDetails);
string_multibuffer_initialize(errorParser->extraDetailsNamesValues);
}
S3Status error_parser_add(ErrorParser *errorParser, char *buffer,
int bufferSize)
{
if (!errorParser->errorXmlParserInitialized) {
simplexml_initialize(&(errorParser->errorXmlParser), &errorXmlCallback,
errorParser);
errorParser->errorXmlParserInitialized = 1;
}
return simplexml_add(&(errorParser->errorXmlParser), buffer, bufferSize);
}
void error_parser_convert_status(ErrorParser *errorParser, S3Status *status)
{
// Convert the error status string into a code
if (!errorParser->codeLen) {
return;
}
#define HANDLE_CODE(name) \
do { \
if (!strcmp(errorParser->code, #name)) { \
*status = S3StatusError##name; \
goto code_set; \
} \
} while (0)
HANDLE_CODE(AccessDenied);
HANDLE_CODE(AccountProblem);
HANDLE_CODE(AmbiguousGrantByEmailAddress);
HANDLE_CODE(BadDigest);
HANDLE_CODE(BucketAlreadyExists);
HANDLE_CODE(BucketAlreadyOwnedByYou);
HANDLE_CODE(BucketNotEmpty);
HANDLE_CODE(CredentialsNotSupported);
HANDLE_CODE(CrossLocationLoggingProhibited);
HANDLE_CODE(EntityTooSmall);
HANDLE_CODE(EntityTooLarge);
HANDLE_CODE(ExpiredToken);
HANDLE_CODE(IncompleteBody);
HANDLE_CODE(IncorrectNumberOfFilesInPostRequest);
HANDLE_CODE(InlineDataTooLarge);
HANDLE_CODE(InternalError);
HANDLE_CODE(InvalidAccessKeyId);
HANDLE_CODE(InvalidAddressingHeader);
HANDLE_CODE(InvalidArgument);
HANDLE_CODE(InvalidBucketName);
HANDLE_CODE(InvalidDigest);
HANDLE_CODE(InvalidLocationConstraint);
HANDLE_CODE(InvalidPayer);
HANDLE_CODE(InvalidPolicyDocument);
HANDLE_CODE(InvalidRange);
HANDLE_CODE(InvalidSecurity);
HANDLE_CODE(InvalidSOAPRequest);
HANDLE_CODE(InvalidStorageClass);
HANDLE_CODE(InvalidTargetBucketForLogging);
HANDLE_CODE(InvalidToken);
HANDLE_CODE(InvalidURI);
HANDLE_CODE(KeyTooLong);
HANDLE_CODE(MalformedACLError);
HANDLE_CODE(MalformedXML);
HANDLE_CODE(MaxMessageLengthExceeded);
HANDLE_CODE(MaxPostPreDataLengthExceededError);
HANDLE_CODE(MetadataTooLarge);
HANDLE_CODE(MethodNotAllowed);
HANDLE_CODE(MissingAttachment);
HANDLE_CODE(MissingContentLength);
HANDLE_CODE(MissingSecurityElement);
HANDLE_CODE(MissingSecurityHeader);
HANDLE_CODE(NoLoggingStatusForKey);
HANDLE_CODE(NoSuchBucket);
HANDLE_CODE(NoSuchKey);
HANDLE_CODE(NotImplemented);
HANDLE_CODE(NotSignedUp);
HANDLE_CODE(OperationAborted);
HANDLE_CODE(PermanentRedirect);
HANDLE_CODE(PreconditionFailed);
HANDLE_CODE(Redirect);
HANDLE_CODE(RequestIsNotMultiPartContent);
HANDLE_CODE(RequestTimeout);
HANDLE_CODE(RequestTimeTooSkewed);
HANDLE_CODE(RequestTorrentOfBucketError);
HANDLE_CODE(SignatureDoesNotMatch);
HANDLE_CODE(SlowDown);
HANDLE_CODE(TemporaryRedirect);
HANDLE_CODE(TokenRefreshRequired);
HANDLE_CODE(TooManyBuckets);
HANDLE_CODE(UnexpectedContent);
HANDLE_CODE(UnresolvableGrantByEmailAddress);
HANDLE_CODE(UserKeyMustBeSpecified);
*status = S3StatusErrorUnknown;
code_set:
return;
}
// Always call this
void error_parser_deinitialize(ErrorParser *errorParser)
{
if (errorParser->errorXmlParserInitialized) {
simplexml_deinitialize(&(errorParser->errorXmlParser));
}
}
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