diff options
Diffstat (limited to 'libccnx-common/ccnx/common/codec/ccnxCodec_Error.c')
| -rw-r--r-- | libccnx-common/ccnx/common/codec/ccnxCodec_Error.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/libccnx-common/ccnx/common/codec/ccnxCodec_Error.c b/libccnx-common/ccnx/common/codec/ccnxCodec_Error.c new file mode 100644 index 00000000..282ec210 --- /dev/null +++ b/libccnx-common/ccnx/common/codec/ccnxCodec_Error.c @@ -0,0 +1,173 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * 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. + */ + +/** + */ +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <limits.h> + +#include <parc/algol/parc_Memory.h> +#include <LongBow/runtime.h> + +#include <ccnx/common/codec/ccnxCodec_Error.h> + +struct error_messages { + CCNxCodecErrorCodes code; + const char *message; +} TlvErrorMessages[] = { + { .code = TLV_ERR_NO_ERROR, .message = "No error" }, + { .code = TLV_ERR_VERSION, .message = "Unsupported version" }, + { .code = TLV_ERR_PACKETTYPE, .message = "Unsupported packet type" }, + { .code = TLV_ERR_BEYOND_PACKET_END, .message = "Field goes beyond end of packet" }, + { .code = TLV_ERR_TOO_LONG, .message = "Length too long for parent container" }, + { .code = TLV_ERR_NOT_FIXED_SIZE, .message = "Fixed size Type wrong Length" }, + { .code = TLV_ERR_DUPLICATE_FIELD, .message = "Duplicate field" }, + { .code = TLV_ERR_EMPTY_SPACE, .message = "The sum of child TLVs did not add up to parent container length" }, + + // missing mandatory field errors + { .code = TLV_MISSING_MANDATORY, .message = "Missing mandatory field" }, + + { .code = TLV_ERR_DECODE, .message = "Decoding error" }, + + { .code = TLV_ERR_PACKETLENGTH_TOO_SHORT, .message = "Packet length less than 8" }, + { .code = TLV_ERR_HEADERLENGTH_TOO_SHORT, .message = "Header length less than 8" }, + { .code = TLV_ERR_PACKETLENGTHSHORTER, .message = "Packet length less than header length" }, + + + // end of list sentinel, the NULL determines the end of list + { .code = UINT16_MAX, .message = NULL } +}; + + +const char * +ccnxCodecErrors_ErrorMessage(CCNxCodecErrorCodes code) +{ + for (int i = 0; TlvErrorMessages[i].message != NULL; i++) { + if (TlvErrorMessages[i].code == code) { + return TlvErrorMessages[i].message; + } + } + return "No error message found"; +} + +// ========================================================================== + +struct ccnx_codec_error { + CCNxCodecErrorCodes code; + const char *functionName; + int line; + size_t byteOffset; + unsigned refcount; + char *toString; +}; + +CCNxCodecError * +ccnxCodecError_Create(CCNxCodecErrorCodes code, const char *func, int line, size_t byteOffset) +{ + CCNxCodecError *error = parcMemory_AllocateAndClear(sizeof(CCNxCodecError)); + assertNotNull(error, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(CCNxCodecError)); + error->code = code; + error->functionName = func; + error->line = line; + error->byteOffset = byteOffset; + error->toString = NULL; // computed on the fly + error->refcount = 1; + return error; +} + +CCNxCodecError * +ccnxCodecError_Acquire(CCNxCodecError *error) +{ + assertNotNull(error, "Parameter error must be non-null"); + assertTrue(error->refcount > 0, "Parameter has 0 refcount, not valid"); + + error->refcount++; + return error; +} + +void +ccnxCodecError_Release(CCNxCodecError **errorPtr) +{ + assertNotNull(errorPtr, "Parameter must be non-null double pointer"); + assertNotNull(*errorPtr, "Parameter must derefernece to non-null pointer"); + CCNxCodecError *error = *errorPtr; + + assertTrue(error->refcount > 0, "Parameter has 0 refcount, not valid"); + error->refcount--; + if (error->refcount == 0) { + if (error->toString) { + // this is asprintf generated + free(error->toString); + } + parcMemory_Deallocate((void **) &error); + } + *errorPtr = NULL; +} + +size_t +ccnxCodecError_GetByteOffset(const CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + return error->byteOffset; +} + + +CCNxCodecErrorCodes +ccnxCodecError_GetErrorCode(const CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + return error->code; +} + +const char * +ccnxCodecError_GetFunction(const CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + return error->functionName; +} + +int +ccnxCodecError_GetLine(const CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + return error->line; +} + +const char * +ccnxCodecError_GetErrorMessage(const CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + return ccnxCodecErrors_ErrorMessage(error->code); +} + +const char * +ccnxCodecError_ToString(CCNxCodecError *error) +{ + assertNotNull(error, "Parameter must be non-null"); + if (error->toString) { + return error->toString; + } + + int failure = asprintf(&error->toString, "TLV error: %s:%d offset %zu: %s", + error->functionName, + error->line, + error->byteOffset, + ccnxCodecError_GetErrorMessage(error)); + assertTrue(failure > -1, "Error asprintf"); + + return error->toString; +} |