Azure IoT common library
Fork of azure_c_shared_utility by
buffer.c@27:8656a313842b, 2017-05-22 (annotated)
- Committer:
- AzureIoTClient
- Date:
- Mon May 22 10:35:55 2017 -0700
- Revision:
- 27:8656a313842b
- Parent:
- 21:b92006c5b9ff
- Child:
- 30:ce3813c5a692
1.1.15
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Azure.IoT Build | 0:fa2de1b79154 | 1 | // Copyright (c) Microsoft. All rights reserved. |
Azure.IoT Build | 0:fa2de1b79154 | 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information. |
Azure.IoT Build | 0:fa2de1b79154 | 3 | |
Azure.IoT Build | 0:fa2de1b79154 | 4 | #include <stdlib.h> |
Azure.IoT Build | 0:fa2de1b79154 | 5 | #include <stddef.h> |
Azure.IoT Build | 0:fa2de1b79154 | 6 | #include <string.h> |
AzureIoTClient | 27:8656a313842b | 7 | #include <stdbool.h> |
AzureIoTClient | 19:2e0811512ceb | 8 | #include "azure_c_shared_utility/gballoc.h" |
Azure.IoT Build | 0:fa2de1b79154 | 9 | #include "azure_c_shared_utility/buffer_.h" |
AzureIoTClient | 21:b92006c5b9ff | 10 | #include "azure_c_shared_utility/optimize_size.h" |
Azure.IoT Build | 6:c55b013dfc2a | 11 | #include "azure_c_shared_utility/xlogging.h" |
Azure.IoT Build | 0:fa2de1b79154 | 12 | |
Azure.IoT Build | 0:fa2de1b79154 | 13 | typedef struct BUFFER_TAG |
Azure.IoT Build | 0:fa2de1b79154 | 14 | { |
Azure.IoT Build | 0:fa2de1b79154 | 15 | unsigned char* buffer; |
Azure.IoT Build | 0:fa2de1b79154 | 16 | size_t size; |
AzureIoTClient | 27:8656a313842b | 17 | } BUFFER; |
Azure.IoT Build | 0:fa2de1b79154 | 18 | |
Azure.IoT Build | 0:fa2de1b79154 | 19 | /* Codes_SRS_BUFFER_07_001: [BUFFER_new shall allocate a BUFFER_HANDLE that will contain a NULL unsigned char*.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 20 | BUFFER_HANDLE BUFFER_new(void) |
Azure.IoT Build | 0:fa2de1b79154 | 21 | { |
Azure.IoT Build | 0:fa2de1b79154 | 22 | BUFFER* temp = (BUFFER*)malloc(sizeof(BUFFER)); |
Azure.IoT Build | 0:fa2de1b79154 | 23 | /* Codes_SRS_BUFFER_07_002: [BUFFER_new shall return NULL on any error that occurs.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 24 | if (temp != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 25 | { |
Azure.IoT Build | 0:fa2de1b79154 | 26 | temp->buffer = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 27 | temp->size = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 28 | } |
Azure.IoT Build | 0:fa2de1b79154 | 29 | return (BUFFER_HANDLE)temp; |
Azure.IoT Build | 0:fa2de1b79154 | 30 | } |
Azure.IoT Build | 0:fa2de1b79154 | 31 | |
AzureIoTClient | 10:1be0bc9a9deb | 32 | static int BUFFER_safemalloc(BUFFER* handleptr, size_t size) |
AzureIoTClient | 10:1be0bc9a9deb | 33 | { |
AzureIoTClient | 10:1be0bc9a9deb | 34 | int result; |
AzureIoTClient | 10:1be0bc9a9deb | 35 | size_t sizetomalloc = size; |
AzureIoTClient | 10:1be0bc9a9deb | 36 | if (size == 0) |
AzureIoTClient | 10:1be0bc9a9deb | 37 | { |
AzureIoTClient | 10:1be0bc9a9deb | 38 | sizetomalloc = 1; |
AzureIoTClient | 10:1be0bc9a9deb | 39 | } |
AzureIoTClient | 10:1be0bc9a9deb | 40 | handleptr->buffer = (unsigned char*)malloc(sizetomalloc); |
AzureIoTClient | 10:1be0bc9a9deb | 41 | if (handleptr->buffer == NULL) |
AzureIoTClient | 10:1be0bc9a9deb | 42 | { |
AzureIoTClient | 10:1be0bc9a9deb | 43 | /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.]*/ |
AzureIoTClient | 27:8656a313842b | 44 | LogError("Failure allocating data"); |
AzureIoTClient | 21:b92006c5b9ff | 45 | result = __FAILURE__; |
AzureIoTClient | 10:1be0bc9a9deb | 46 | } |
AzureIoTClient | 10:1be0bc9a9deb | 47 | else |
AzureIoTClient | 10:1be0bc9a9deb | 48 | { |
AzureIoTClient | 10:1be0bc9a9deb | 49 | // we still consider the real buffer size is 0 |
AzureIoTClient | 10:1be0bc9a9deb | 50 | handleptr->size = size; |
AzureIoTClient | 10:1be0bc9a9deb | 51 | result = 0; |
AzureIoTClient | 10:1be0bc9a9deb | 52 | } |
AzureIoTClient | 10:1be0bc9a9deb | 53 | return result; |
AzureIoTClient | 10:1be0bc9a9deb | 54 | } |
AzureIoTClient | 10:1be0bc9a9deb | 55 | |
Azure.IoT Build | 0:fa2de1b79154 | 56 | BUFFER_HANDLE BUFFER_create(const unsigned char* source, size_t size) |
Azure.IoT Build | 0:fa2de1b79154 | 57 | { |
Azure.IoT Build | 0:fa2de1b79154 | 58 | BUFFER* result; |
Azure.IoT Build | 0:fa2de1b79154 | 59 | /*Codes_SRS_BUFFER_02_001: [If source is NULL then BUFFER_create shall return NULL.]*/ |
Azure.IoT Build | 0:fa2de1b79154 | 60 | if (source == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 61 | { |
AzureIoTClient | 27:8656a313842b | 62 | LogError("invalid parameter source: %p", source); |
Azure.IoT Build | 0:fa2de1b79154 | 63 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 64 | } |
Azure.IoT Build | 0:fa2de1b79154 | 65 | else |
Azure.IoT Build | 0:fa2de1b79154 | 66 | { |
Azure.IoT Build | 0:fa2de1b79154 | 67 | /*Codes_SRS_BUFFER_02_002: [Otherwise, BUFFER_create shall allocate memory to hold size bytes and shall copy from source size bytes into the newly allocated memory.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 68 | result = (BUFFER*)malloc(sizeof(BUFFER)); |
Azure.IoT Build | 0:fa2de1b79154 | 69 | if (result == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 70 | { |
Azure.IoT Build | 0:fa2de1b79154 | 71 | /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 72 | /*fallthrough*/ |
AzureIoTClient | 27:8656a313842b | 73 | LogError("Failure allocating BUFFER structure"); |
Azure.IoT Build | 0:fa2de1b79154 | 74 | } |
Azure.IoT Build | 0:fa2de1b79154 | 75 | else |
Azure.IoT Build | 0:fa2de1b79154 | 76 | { |
AzureIoTClient | 10:1be0bc9a9deb | 77 | /* Codes_SRS_BUFFER_02_005: [If size parameter is 0 then 1 byte of memory shall be allocated yet size of the buffer shall be set to 0.]*/ |
AzureIoTClient | 10:1be0bc9a9deb | 78 | if (BUFFER_safemalloc(result, size) != 0) |
Azure.IoT Build | 0:fa2de1b79154 | 79 | { |
AzureIoTClient | 10:1be0bc9a9deb | 80 | LogError("unable to BUFFER_safemalloc "); |
Azure.IoT Build | 0:fa2de1b79154 | 81 | free(result); |
Azure.IoT Build | 0:fa2de1b79154 | 82 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 83 | } |
Azure.IoT Build | 0:fa2de1b79154 | 84 | else |
Azure.IoT Build | 0:fa2de1b79154 | 85 | { |
Azure.IoT Build | 0:fa2de1b79154 | 86 | /*Codes_SRS_BUFFER_02_004: [Otherwise, BUFFER_create shall return a non-NULL handle.] */ |
AzureIoTClient | 19:2e0811512ceb | 87 | (void)memcpy(result->buffer, source, size); |
Azure.IoT Build | 0:fa2de1b79154 | 88 | } |
Azure.IoT Build | 0:fa2de1b79154 | 89 | } |
Azure.IoT Build | 0:fa2de1b79154 | 90 | } |
Azure.IoT Build | 0:fa2de1b79154 | 91 | return (BUFFER_HANDLE)result; |
Azure.IoT Build | 0:fa2de1b79154 | 92 | } |
Azure.IoT Build | 0:fa2de1b79154 | 93 | |
Azure.IoT Build | 0:fa2de1b79154 | 94 | /* Codes_SRS_BUFFER_07_003: [BUFFER_delete shall delete the data associated with the BUFFER_HANDLE along with the Buffer.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 95 | void BUFFER_delete(BUFFER_HANDLE handle) |
Azure.IoT Build | 0:fa2de1b79154 | 96 | { |
Azure.IoT Build | 0:fa2de1b79154 | 97 | /* Codes_SRS_BUFFER_07_004: [BUFFER_delete shall not delete any BUFFER_HANDLE that is NULL.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 98 | if (handle != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 99 | { |
Azure.IoT Build | 0:fa2de1b79154 | 100 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 101 | if (b->buffer != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 102 | { |
Azure.IoT Build | 0:fa2de1b79154 | 103 | /* Codes_SRS_BUFFER_07_003: [BUFFER_delete shall delete the data associated with the BUFFER_HANDLE along with the Buffer.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 104 | free(b->buffer); |
Azure.IoT Build | 0:fa2de1b79154 | 105 | } |
Azure.IoT Build | 0:fa2de1b79154 | 106 | free(b); |
Azure.IoT Build | 0:fa2de1b79154 | 107 | } |
Azure.IoT Build | 0:fa2de1b79154 | 108 | } |
Azure.IoT Build | 0:fa2de1b79154 | 109 | |
Azure.IoT Build | 0:fa2de1b79154 | 110 | /*return 0 if the buffer was copied*/ |
Azure.IoT Build | 0:fa2de1b79154 | 111 | /*else return different than zero*/ |
Azure.IoT Build | 0:fa2de1b79154 | 112 | /* Codes_SRS_BUFFER_07_008: [BUFFER_build allocates size_t bytes, copies the unsigned char* into the buffer and returns zero on success.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 113 | int BUFFER_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size) |
Azure.IoT Build | 0:fa2de1b79154 | 114 | { |
Azure.IoT Build | 0:fa2de1b79154 | 115 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 116 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 117 | { |
Azure.IoT Build | 0:fa2de1b79154 | 118 | /* Codes_SRS_BUFFER_07_009: [BUFFER_build shall return nonzero if handle is NULL ] */ |
AzureIoTClient | 21:b92006c5b9ff | 119 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 120 | } |
Azure.IoT Build | 0:fa2de1b79154 | 121 | /* Codes_SRS_BUFFER_01_002: [The size argument can be zero, in which case the underlying buffer held by the buffer instance shall be freed.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 122 | else if (size == 0) |
Azure.IoT Build | 0:fa2de1b79154 | 123 | { |
Azure.IoT Build | 0:fa2de1b79154 | 124 | /* Codes_SRS_BUFFER_01_003: [If size is zero, source can be NULL.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 125 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 126 | free(b->buffer); |
Azure.IoT Build | 0:fa2de1b79154 | 127 | b->buffer = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 128 | b->size = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 129 | |
Azure.IoT Build | 0:fa2de1b79154 | 130 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 131 | } |
Azure.IoT Build | 0:fa2de1b79154 | 132 | else |
Azure.IoT Build | 0:fa2de1b79154 | 133 | { |
Azure.IoT Build | 0:fa2de1b79154 | 134 | if (source == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 135 | { |
Azure.IoT Build | 0:fa2de1b79154 | 136 | /* Codes_SRS_BUFFER_01_001: [If size is positive and source is NULL, BUFFER_build shall return nonzero] */ |
AzureIoTClient | 21:b92006c5b9ff | 137 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 138 | } |
Azure.IoT Build | 0:fa2de1b79154 | 139 | else |
Azure.IoT Build | 0:fa2de1b79154 | 140 | { |
Azure.IoT Build | 0:fa2de1b79154 | 141 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 142 | /* Codes_SRS_BUFFER_07_011: [BUFFER_build shall overwrite previous contents if the buffer has been previously allocated.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 143 | unsigned char* newBuffer = (unsigned char*)realloc(b->buffer, size); |
Azure.IoT Build | 0:fa2de1b79154 | 144 | if (newBuffer == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 145 | { |
Azure.IoT Build | 0:fa2de1b79154 | 146 | /* Codes_SRS_BUFFER_07_010: [BUFFER_build shall return nonzero if any error is encountered.] */ |
AzureIoTClient | 27:8656a313842b | 147 | LogError("Failure reallocating buffer"); |
AzureIoTClient | 21:b92006c5b9ff | 148 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 149 | } |
Azure.IoT Build | 0:fa2de1b79154 | 150 | else |
Azure.IoT Build | 0:fa2de1b79154 | 151 | { |
Azure.IoT Build | 0:fa2de1b79154 | 152 | b->buffer = newBuffer; |
Azure.IoT Build | 0:fa2de1b79154 | 153 | b->size = size; |
Azure.IoT Build | 0:fa2de1b79154 | 154 | /* Codes_SRS_BUFFER_01_002: [The size argument can be zero, in which case nothing shall be copied from source.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 155 | (void)memcpy(b->buffer, source, size); |
Azure.IoT Build | 0:fa2de1b79154 | 156 | |
Azure.IoT Build | 0:fa2de1b79154 | 157 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 158 | } |
Azure.IoT Build | 0:fa2de1b79154 | 159 | } |
Azure.IoT Build | 0:fa2de1b79154 | 160 | } |
Azure.IoT Build | 0:fa2de1b79154 | 161 | |
Azure.IoT Build | 0:fa2de1b79154 | 162 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 163 | } |
Azure.IoT Build | 0:fa2de1b79154 | 164 | |
AzureIoTClient | 27:8656a313842b | 165 | int BUFFER_append_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size) |
AzureIoTClient | 27:8656a313842b | 166 | { |
AzureIoTClient | 27:8656a313842b | 167 | int result; |
AzureIoTClient | 27:8656a313842b | 168 | if (handle == NULL || source == NULL || size == 0) |
AzureIoTClient | 27:8656a313842b | 169 | { |
AzureIoTClient | 27:8656a313842b | 170 | /* Codes_SRS_BUFFER_07_029: [ BUFFER_append_build shall return nonzero if handle or source are NULL or if size is 0. ] */ |
AzureIoTClient | 27:8656a313842b | 171 | LogError("BUFFER_append_build failed invalid parameter handle: %p, source: %p, size: %uz", handle, source, size); |
AzureIoTClient | 27:8656a313842b | 172 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 173 | } |
AzureIoTClient | 27:8656a313842b | 174 | else |
AzureIoTClient | 27:8656a313842b | 175 | { |
AzureIoTClient | 27:8656a313842b | 176 | if (handle->buffer == NULL) |
AzureIoTClient | 27:8656a313842b | 177 | { |
AzureIoTClient | 27:8656a313842b | 178 | /* Codes_SRS_BUFFER_07_030: [ if handle->buffer is NULL BUFFER_append_build shall allocate the a buffer of size bytes... ] */ |
AzureIoTClient | 27:8656a313842b | 179 | if (BUFFER_safemalloc(handle, size) != 0) |
AzureIoTClient | 27:8656a313842b | 180 | { |
AzureIoTClient | 27:8656a313842b | 181 | /* Codes_SRS_BUFFER_07_035: [ If any error is encountered BUFFER_append_build shall return a non-null value. ] */ |
AzureIoTClient | 27:8656a313842b | 182 | LogError("Failure with BUFFER_safemalloc"); |
AzureIoTClient | 27:8656a313842b | 183 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 184 | } |
AzureIoTClient | 27:8656a313842b | 185 | else |
AzureIoTClient | 27:8656a313842b | 186 | { |
AzureIoTClient | 27:8656a313842b | 187 | /* Codes_SRS_BUFFER_07_031: [ ... and copy the contents of source to handle->buffer. ] */ |
AzureIoTClient | 27:8656a313842b | 188 | (void)memcpy(handle->buffer, source, size); |
AzureIoTClient | 27:8656a313842b | 189 | /* Codes_SRS_BUFFER_07_034: [ On success BUFFER_append_build shall return 0 ] */ |
AzureIoTClient | 27:8656a313842b | 190 | result = 0; |
AzureIoTClient | 27:8656a313842b | 191 | } |
AzureIoTClient | 27:8656a313842b | 192 | } |
AzureIoTClient | 27:8656a313842b | 193 | else |
AzureIoTClient | 27:8656a313842b | 194 | { |
AzureIoTClient | 27:8656a313842b | 195 | /* Codes_SRS_BUFFER_07_032: [ if handle->buffer is not NULL BUFFER_append_build shall realloc the buffer to be the handle->size + size ] */ |
AzureIoTClient | 27:8656a313842b | 196 | unsigned char* temp = (unsigned char*)realloc(handle->buffer, handle->size + size); |
AzureIoTClient | 27:8656a313842b | 197 | if (temp == NULL) |
AzureIoTClient | 27:8656a313842b | 198 | { |
AzureIoTClient | 27:8656a313842b | 199 | /* Codes_SRS_BUFFER_07_035: [ If any error is encountered BUFFER_append_build shall return a non-null value. ] */ |
AzureIoTClient | 27:8656a313842b | 200 | LogError("Failure reallocating temporary buffer"); |
AzureIoTClient | 27:8656a313842b | 201 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 202 | } |
AzureIoTClient | 27:8656a313842b | 203 | else |
AzureIoTClient | 27:8656a313842b | 204 | { |
AzureIoTClient | 27:8656a313842b | 205 | /* Codes_SRS_BUFFER_07_033: [ ... and copy the contents of source to the end of the buffer. ] */ |
AzureIoTClient | 27:8656a313842b | 206 | handle->buffer = temp; |
AzureIoTClient | 27:8656a313842b | 207 | // Append the BUFFER |
AzureIoTClient | 27:8656a313842b | 208 | (void)memcpy(&handle->buffer[handle->size], source, size); |
AzureIoTClient | 27:8656a313842b | 209 | handle->size += size; |
AzureIoTClient | 27:8656a313842b | 210 | /* Codes_SRS_BUFFER_07_034: [ On success BUFFER_append_build shall return 0 ] */ |
AzureIoTClient | 27:8656a313842b | 211 | result = 0; |
AzureIoTClient | 27:8656a313842b | 212 | } |
AzureIoTClient | 27:8656a313842b | 213 | } |
AzureIoTClient | 27:8656a313842b | 214 | } |
AzureIoTClient | 27:8656a313842b | 215 | return result; |
AzureIoTClient | 27:8656a313842b | 216 | } |
AzureIoTClient | 27:8656a313842b | 217 | |
Azure.IoT Build | 0:fa2de1b79154 | 218 | /*return 0 if the buffer was pre-build(that is, had its space allocated)*/ |
Azure.IoT Build | 0:fa2de1b79154 | 219 | /*else return different than zero*/ |
Azure.IoT Build | 0:fa2de1b79154 | 220 | /* Codes_SRS_BUFFER_07_005: [BUFFER_pre_build allocates size_t bytes of BUFFER_HANDLE and returns zero on success.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 221 | int BUFFER_pre_build(BUFFER_HANDLE handle, size_t size) |
Azure.IoT Build | 0:fa2de1b79154 | 222 | { |
Azure.IoT Build | 0:fa2de1b79154 | 223 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 224 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 225 | { |
Azure.IoT Build | 0:fa2de1b79154 | 226 | /* Codes_SRS_BUFFER_07_006: [If handle is NULL or size is 0 then BUFFER_pre_build shall return a nonzero value.] */ |
AzureIoTClient | 21:b92006c5b9ff | 227 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 228 | } |
Azure.IoT Build | 0:fa2de1b79154 | 229 | else if (size == 0) |
Azure.IoT Build | 0:fa2de1b79154 | 230 | { |
Azure.IoT Build | 0:fa2de1b79154 | 231 | /* Codes_SRS_BUFFER_07_006: [If handle is NULL or size is 0 then BUFFER_pre_build shall return a nonzero value.] */ |
AzureIoTClient | 21:b92006c5b9ff | 232 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 233 | } |
Azure.IoT Build | 0:fa2de1b79154 | 234 | else |
Azure.IoT Build | 0:fa2de1b79154 | 235 | { |
Azure.IoT Build | 0:fa2de1b79154 | 236 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 237 | if (b->buffer != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 238 | { |
Azure.IoT Build | 0:fa2de1b79154 | 239 | /* Codes_SRS_BUFFER_07_007: [BUFFER_pre_build shall return nonzero if the buffer has been previously allocated and is not NULL.] */ |
AzureIoTClient | 27:8656a313842b | 240 | LogError("Failure buffer data is NULL"); |
AzureIoTClient | 21:b92006c5b9ff | 241 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 242 | } |
Azure.IoT Build | 0:fa2de1b79154 | 243 | else |
Azure.IoT Build | 0:fa2de1b79154 | 244 | { |
Azure.IoT Build | 0:fa2de1b79154 | 245 | if ((b->buffer = (unsigned char*)malloc(size)) == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 246 | { |
Azure.IoT Build | 0:fa2de1b79154 | 247 | /* Codes_SRS_BUFFER_07_013: [BUFFER_pre_build shall return nonzero if any error is encountered.] */ |
AzureIoTClient | 27:8656a313842b | 248 | LogError("Failure allocating buffer"); |
AzureIoTClient | 21:b92006c5b9ff | 249 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 250 | } |
Azure.IoT Build | 0:fa2de1b79154 | 251 | else |
Azure.IoT Build | 0:fa2de1b79154 | 252 | { |
Azure.IoT Build | 0:fa2de1b79154 | 253 | b->size = size; |
Azure.IoT Build | 0:fa2de1b79154 | 254 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 255 | } |
Azure.IoT Build | 0:fa2de1b79154 | 256 | } |
Azure.IoT Build | 0:fa2de1b79154 | 257 | } |
Azure.IoT Build | 0:fa2de1b79154 | 258 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 259 | } |
Azure.IoT Build | 0:fa2de1b79154 | 260 | |
Azure.IoT Build | 0:fa2de1b79154 | 261 | /* Codes_SRS_BUFFER_07_019: [BUFFER_content shall return the data contained within the BUFFER_HANDLE.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 262 | int BUFFER_content(BUFFER_HANDLE handle, const unsigned char** content) |
Azure.IoT Build | 0:fa2de1b79154 | 263 | { |
Azure.IoT Build | 0:fa2de1b79154 | 264 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 265 | if ((handle == NULL) || (content == NULL)) |
Azure.IoT Build | 0:fa2de1b79154 | 266 | { |
Azure.IoT Build | 0:fa2de1b79154 | 267 | /* Codes_SRS_BUFFER_07_020: [If the handle and/or content*is NULL BUFFER_content shall return nonzero.] */ |
AzureIoTClient | 21:b92006c5b9ff | 268 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 269 | } |
Azure.IoT Build | 0:fa2de1b79154 | 270 | else |
Azure.IoT Build | 0:fa2de1b79154 | 271 | { |
Azure.IoT Build | 0:fa2de1b79154 | 272 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 273 | *content = b->buffer; |
Azure.IoT Build | 0:fa2de1b79154 | 274 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 275 | } |
Azure.IoT Build | 0:fa2de1b79154 | 276 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 277 | } |
Azure.IoT Build | 0:fa2de1b79154 | 278 | |
Azure.IoT Build | 0:fa2de1b79154 | 279 | /*return 0 if everything went ok and whatever was built in the buffer was unbuilt*/ |
Azure.IoT Build | 0:fa2de1b79154 | 280 | /* Codes_SRS_BUFFER_07_012: [BUFFER_unbuild shall clear the underlying unsigned char* data associated with the BUFFER_HANDLE this will return zero on success.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 281 | extern int BUFFER_unbuild(BUFFER_HANDLE handle) |
Azure.IoT Build | 0:fa2de1b79154 | 282 | { |
Azure.IoT Build | 0:fa2de1b79154 | 283 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 284 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 285 | { |
Azure.IoT Build | 0:fa2de1b79154 | 286 | /* Codes_SRS_BUFFER_07_014: [BUFFER_unbuild shall return a nonzero value if BUFFER_HANDLE is NULL.] */ |
AzureIoTClient | 21:b92006c5b9ff | 287 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 288 | } |
Azure.IoT Build | 0:fa2de1b79154 | 289 | else |
Azure.IoT Build | 0:fa2de1b79154 | 290 | { |
Azure.IoT Build | 0:fa2de1b79154 | 291 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 292 | if (b->buffer != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 293 | { |
AzureIoTClient | 27:8656a313842b | 294 | LogError("Failure buffer data is NULL"); |
Azure.IoT Build | 0:fa2de1b79154 | 295 | free(b->buffer); |
Azure.IoT Build | 0:fa2de1b79154 | 296 | b->buffer = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 297 | b->size = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 298 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 299 | } |
Azure.IoT Build | 0:fa2de1b79154 | 300 | else |
Azure.IoT Build | 0:fa2de1b79154 | 301 | { |
Azure.IoT Build | 0:fa2de1b79154 | 302 | /* Codes_SRS_BUFFER_07_015: [BUFFER_unbuild shall return a nonzero value if the unsigned char* referenced by BUFFER_HANDLE is NULL.] */ |
AzureIoTClient | 21:b92006c5b9ff | 303 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 304 | } |
Azure.IoT Build | 0:fa2de1b79154 | 305 | } |
Azure.IoT Build | 0:fa2de1b79154 | 306 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 307 | } |
Azure.IoT Build | 0:fa2de1b79154 | 308 | |
Azure.IoT Build | 0:fa2de1b79154 | 309 | /* Codes_SRS_BUFFER_07_016: [BUFFER_enlarge shall increase the size of the unsigned char* referenced by BUFFER_HANDLE.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 310 | int BUFFER_enlarge(BUFFER_HANDLE handle, size_t enlargeSize) |
Azure.IoT Build | 0:fa2de1b79154 | 311 | { |
Azure.IoT Build | 0:fa2de1b79154 | 312 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 313 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 314 | { |
Azure.IoT Build | 0:fa2de1b79154 | 315 | /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */ |
AzureIoTClient | 27:8656a313842b | 316 | LogError("Failure: handle is invalid."); |
AzureIoTClient | 21:b92006c5b9ff | 317 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 318 | } |
Azure.IoT Build | 0:fa2de1b79154 | 319 | else if (enlargeSize == 0) |
Azure.IoT Build | 0:fa2de1b79154 | 320 | { |
Azure.IoT Build | 0:fa2de1b79154 | 321 | /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */ |
AzureIoTClient | 27:8656a313842b | 322 | LogError("Failure: enlargeSize size is 0."); |
AzureIoTClient | 21:b92006c5b9ff | 323 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 324 | } |
Azure.IoT Build | 0:fa2de1b79154 | 325 | else |
Azure.IoT Build | 0:fa2de1b79154 | 326 | { |
Azure.IoT Build | 0:fa2de1b79154 | 327 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 328 | unsigned char* temp = (unsigned char*)realloc(b->buffer, b->size + enlargeSize); |
Azure.IoT Build | 0:fa2de1b79154 | 329 | if (temp == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 330 | { |
Azure.IoT Build | 0:fa2de1b79154 | 331 | /* Codes_SRS_BUFFER_07_018: [BUFFER_enlarge shall return a nonzero result if any error is encountered.] */ |
AzureIoTClient | 27:8656a313842b | 332 | LogError("Failure: allocating temp buffer."); |
AzureIoTClient | 21:b92006c5b9ff | 333 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 334 | } |
Azure.IoT Build | 0:fa2de1b79154 | 335 | else |
Azure.IoT Build | 0:fa2de1b79154 | 336 | { |
Azure.IoT Build | 0:fa2de1b79154 | 337 | b->buffer = temp; |
Azure.IoT Build | 0:fa2de1b79154 | 338 | b->size += enlargeSize; |
Azure.IoT Build | 0:fa2de1b79154 | 339 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 340 | } |
Azure.IoT Build | 0:fa2de1b79154 | 341 | } |
Azure.IoT Build | 0:fa2de1b79154 | 342 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 343 | } |
Azure.IoT Build | 0:fa2de1b79154 | 344 | |
AzureIoTClient | 27:8656a313842b | 345 | int BUFFER_shrink(BUFFER_HANDLE handle, size_t decreaseSize, bool fromEnd) |
AzureIoTClient | 27:8656a313842b | 346 | { |
AzureIoTClient | 27:8656a313842b | 347 | int result; |
AzureIoTClient | 27:8656a313842b | 348 | if (handle == NULL) |
AzureIoTClient | 27:8656a313842b | 349 | { |
AzureIoTClient | 27:8656a313842b | 350 | /* Codes_SRS_BUFFER_07_036: [ if handle is NULL, BUFFER_shrink shall return a non-null value ]*/ |
AzureIoTClient | 27:8656a313842b | 351 | LogError("Failure: handle is invalid."); |
AzureIoTClient | 27:8656a313842b | 352 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 353 | } |
AzureIoTClient | 27:8656a313842b | 354 | else if (decreaseSize == 0) |
AzureIoTClient | 27:8656a313842b | 355 | { |
AzureIoTClient | 27:8656a313842b | 356 | /* Codes_SRS_BUFFER_07_037: [ If decreaseSize is equal zero, BUFFER_shrink shall return a non-null value ] */ |
AzureIoTClient | 27:8656a313842b | 357 | LogError("Failure: decrease size is 0."); |
AzureIoTClient | 27:8656a313842b | 358 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 359 | } |
AzureIoTClient | 27:8656a313842b | 360 | else if (decreaseSize > handle->size) |
AzureIoTClient | 27:8656a313842b | 361 | { |
AzureIoTClient | 27:8656a313842b | 362 | /* Codes_SRS_BUFFER_07_038: [ If decreaseSize is less than the size of the buffer, BUFFER_shrink shall return a non-null value ] */ |
AzureIoTClient | 27:8656a313842b | 363 | LogError("Failure: decrease size is less than buffer size."); |
AzureIoTClient | 27:8656a313842b | 364 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 365 | } |
AzureIoTClient | 27:8656a313842b | 366 | else |
AzureIoTClient | 27:8656a313842b | 367 | { |
AzureIoTClient | 27:8656a313842b | 368 | /* Codes_SRS_BUFFER_07_039: [ BUFFER_shrink shall allocate a temporary buffer of existing buffer size minus decreaseSize. ] */ |
AzureIoTClient | 27:8656a313842b | 369 | size_t alloc_size = handle->size - decreaseSize; |
AzureIoTClient | 27:8656a313842b | 370 | if (alloc_size == 0) |
AzureIoTClient | 27:8656a313842b | 371 | { |
AzureIoTClient | 27:8656a313842b | 372 | /* Codes_SRS_BUFFER_07_043: [ If the decreaseSize is equal the buffer size , BUFFER_shrink shall deallocate the buffer and set the size to zero. ] */ |
AzureIoTClient | 27:8656a313842b | 373 | free(handle->buffer); |
AzureIoTClient | 27:8656a313842b | 374 | handle->buffer = NULL; |
AzureIoTClient | 27:8656a313842b | 375 | handle->size = 0; |
AzureIoTClient | 27:8656a313842b | 376 | result = 0; |
AzureIoTClient | 27:8656a313842b | 377 | } |
AzureIoTClient | 27:8656a313842b | 378 | else |
AzureIoTClient | 27:8656a313842b | 379 | { |
AzureIoTClient | 27:8656a313842b | 380 | unsigned char* tmp = malloc(alloc_size); |
AzureIoTClient | 27:8656a313842b | 381 | if (tmp == NULL) |
AzureIoTClient | 27:8656a313842b | 382 | { |
AzureIoTClient | 27:8656a313842b | 383 | /* Codes_SRS_BUFFER_07_042: [ If a failure is encountered, BUFFER_shrink shall return a non-null value ] */ |
AzureIoTClient | 27:8656a313842b | 384 | LogError("Failure: allocating temp buffer."); |
AzureIoTClient | 27:8656a313842b | 385 | result = __FAILURE__; |
AzureIoTClient | 27:8656a313842b | 386 | } |
AzureIoTClient | 27:8656a313842b | 387 | else |
AzureIoTClient | 27:8656a313842b | 388 | { |
AzureIoTClient | 27:8656a313842b | 389 | if (fromEnd) |
AzureIoTClient | 27:8656a313842b | 390 | { |
AzureIoTClient | 27:8656a313842b | 391 | /* Codes_SRS_BUFFER_07_040: [ if the fromEnd variable is true, BUFFER_shrink shall remove the end of the buffer of size decreaseSize. ] */ |
AzureIoTClient | 27:8656a313842b | 392 | memcpy(tmp, handle->buffer, alloc_size); |
AzureIoTClient | 27:8656a313842b | 393 | free(handle->buffer); |
AzureIoTClient | 27:8656a313842b | 394 | handle->buffer = tmp; |
AzureIoTClient | 27:8656a313842b | 395 | handle->size = alloc_size; |
AzureIoTClient | 27:8656a313842b | 396 | result = 0; |
AzureIoTClient | 27:8656a313842b | 397 | } |
AzureIoTClient | 27:8656a313842b | 398 | else |
AzureIoTClient | 27:8656a313842b | 399 | { |
AzureIoTClient | 27:8656a313842b | 400 | /* Codes_SRS_BUFFER_07_041: [ if the fromEnd variable is false, BUFFER_shrink shall remove the beginning of the buffer of size decreaseSize. ] */ |
AzureIoTClient | 27:8656a313842b | 401 | memcpy(tmp, handle->buffer + decreaseSize, alloc_size); |
AzureIoTClient | 27:8656a313842b | 402 | free(handle->buffer); |
AzureIoTClient | 27:8656a313842b | 403 | handle->buffer = tmp; |
AzureIoTClient | 27:8656a313842b | 404 | handle->size = alloc_size; |
AzureIoTClient | 27:8656a313842b | 405 | result = 0; |
AzureIoTClient | 27:8656a313842b | 406 | } |
AzureIoTClient | 27:8656a313842b | 407 | } |
AzureIoTClient | 27:8656a313842b | 408 | } |
AzureIoTClient | 27:8656a313842b | 409 | } |
AzureIoTClient | 27:8656a313842b | 410 | return result; |
AzureIoTClient | 27:8656a313842b | 411 | } |
AzureIoTClient | 27:8656a313842b | 412 | |
Azure.IoT Build | 0:fa2de1b79154 | 413 | /* Codes_SRS_BUFFER_07_021: [BUFFER_size shall place the size of the associated buffer in the size variable and return zero on success.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 414 | int BUFFER_size(BUFFER_HANDLE handle, size_t* size) |
Azure.IoT Build | 0:fa2de1b79154 | 415 | { |
Azure.IoT Build | 0:fa2de1b79154 | 416 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 417 | if ((handle == NULL) || (size == NULL)) |
Azure.IoT Build | 0:fa2de1b79154 | 418 | { |
Azure.IoT Build | 0:fa2de1b79154 | 419 | /* Codes_SRS_BUFFER_07_022: [BUFFER_size shall return a nonzero value for any error that is encountered.] */ |
AzureIoTClient | 21:b92006c5b9ff | 420 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 421 | } |
Azure.IoT Build | 0:fa2de1b79154 | 422 | else |
Azure.IoT Build | 0:fa2de1b79154 | 423 | { |
Azure.IoT Build | 0:fa2de1b79154 | 424 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 425 | *size = b->size; |
Azure.IoT Build | 0:fa2de1b79154 | 426 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 427 | } |
Azure.IoT Build | 0:fa2de1b79154 | 428 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 429 | } |
Azure.IoT Build | 0:fa2de1b79154 | 430 | |
Azure.IoT Build | 0:fa2de1b79154 | 431 | /* Codes_SRS_BUFFER_07_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 432 | int BUFFER_append(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2) |
Azure.IoT Build | 0:fa2de1b79154 | 433 | { |
Azure.IoT Build | 0:fa2de1b79154 | 434 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 435 | if ( (handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2) ) |
Azure.IoT Build | 0:fa2de1b79154 | 436 | { |
Azure.IoT Build | 0:fa2de1b79154 | 437 | /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */ |
AzureIoTClient | 21:b92006c5b9ff | 438 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 439 | } |
Azure.IoT Build | 0:fa2de1b79154 | 440 | else |
Azure.IoT Build | 0:fa2de1b79154 | 441 | { |
Azure.IoT Build | 0:fa2de1b79154 | 442 | BUFFER* b1 = (BUFFER*)handle1; |
Azure.IoT Build | 0:fa2de1b79154 | 443 | BUFFER* b2 = (BUFFER*)handle2; |
Azure.IoT Build | 0:fa2de1b79154 | 444 | if (b1->buffer == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 445 | { |
Azure.IoT Build | 0:fa2de1b79154 | 446 | /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */ |
AzureIoTClient | 21:b92006c5b9ff | 447 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 448 | } |
Azure.IoT Build | 0:fa2de1b79154 | 449 | else if (b2->buffer == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 450 | { |
Azure.IoT Build | 0:fa2de1b79154 | 451 | /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */ |
AzureIoTClient | 21:b92006c5b9ff | 452 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 453 | } |
Azure.IoT Build | 0:fa2de1b79154 | 454 | else |
Azure.IoT Build | 0:fa2de1b79154 | 455 | { |
AzureIoTClient | 10:1be0bc9a9deb | 456 | if (b2->size ==0) |
Azure.IoT Build | 0:fa2de1b79154 | 457 | { |
AzureIoTClient | 10:1be0bc9a9deb | 458 | // b2->size = 0, whatever b1->size is, do nothing |
AzureIoTClient | 10:1be0bc9a9deb | 459 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 460 | } |
Azure.IoT Build | 0:fa2de1b79154 | 461 | else |
Azure.IoT Build | 0:fa2de1b79154 | 462 | { |
AzureIoTClient | 10:1be0bc9a9deb | 463 | // b2->size != 0, whatever b1->size is |
AzureIoTClient | 10:1be0bc9a9deb | 464 | unsigned char* temp = (unsigned char*)realloc(b1->buffer, b1->size + b2->size); |
AzureIoTClient | 10:1be0bc9a9deb | 465 | if (temp == NULL) |
AzureIoTClient | 10:1be0bc9a9deb | 466 | { |
AzureIoTClient | 10:1be0bc9a9deb | 467 | /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */ |
AzureIoTClient | 27:8656a313842b | 468 | LogError("Failure: allocating temp buffer."); |
AzureIoTClient | 21:b92006c5b9ff | 469 | result = __FAILURE__; |
AzureIoTClient | 10:1be0bc9a9deb | 470 | } |
AzureIoTClient | 10:1be0bc9a9deb | 471 | else |
AzureIoTClient | 10:1be0bc9a9deb | 472 | { |
AzureIoTClient | 10:1be0bc9a9deb | 473 | /* Codes_SRS_BUFFER_07_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.]*/ |
AzureIoTClient | 10:1be0bc9a9deb | 474 | b1->buffer = temp; |
AzureIoTClient | 10:1be0bc9a9deb | 475 | // Append the BUFFER |
AzureIoTClient | 10:1be0bc9a9deb | 476 | (void)memcpy(&b1->buffer[b1->size], b2->buffer, b2->size); |
AzureIoTClient | 10:1be0bc9a9deb | 477 | b1->size += b2->size; |
AzureIoTClient | 10:1be0bc9a9deb | 478 | result = 0; |
AzureIoTClient | 10:1be0bc9a9deb | 479 | } |
Azure.IoT Build | 0:fa2de1b79154 | 480 | } |
Azure.IoT Build | 0:fa2de1b79154 | 481 | } |
Azure.IoT Build | 0:fa2de1b79154 | 482 | } |
Azure.IoT Build | 0:fa2de1b79154 | 483 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 484 | } |
Azure.IoT Build | 0:fa2de1b79154 | 485 | |
Azure.IoT Build | 0:fa2de1b79154 | 486 | int BUFFER_prepend(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2) |
Azure.IoT Build | 0:fa2de1b79154 | 487 | { |
Azure.IoT Build | 0:fa2de1b79154 | 488 | int result; |
Azure.IoT Build | 0:fa2de1b79154 | 489 | if ((handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2)) |
Azure.IoT Build | 0:fa2de1b79154 | 490 | { |
AzureIoTClient | 10:1be0bc9a9deb | 491 | /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/ |
AzureIoTClient | 21:b92006c5b9ff | 492 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 493 | } |
Azure.IoT Build | 0:fa2de1b79154 | 494 | else |
Azure.IoT Build | 0:fa2de1b79154 | 495 | { |
Azure.IoT Build | 0:fa2de1b79154 | 496 | BUFFER* b1 = (BUFFER*)handle1; |
Azure.IoT Build | 0:fa2de1b79154 | 497 | BUFFER* b2 = (BUFFER*)handle2; |
Azure.IoT Build | 0:fa2de1b79154 | 498 | if (b1->buffer == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 499 | { |
AzureIoTClient | 10:1be0bc9a9deb | 500 | /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/ |
AzureIoTClient | 21:b92006c5b9ff | 501 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 502 | } |
Azure.IoT Build | 0:fa2de1b79154 | 503 | else if (b2->buffer == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 504 | { |
AzureIoTClient | 10:1be0bc9a9deb | 505 | /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/ |
AzureIoTClient | 21:b92006c5b9ff | 506 | result = __FAILURE__; |
Azure.IoT Build | 0:fa2de1b79154 | 507 | } |
Azure.IoT Build | 0:fa2de1b79154 | 508 | else |
Azure.IoT Build | 0:fa2de1b79154 | 509 | { |
AzureIoTClient | 10:1be0bc9a9deb | 510 | //put b2 ahead of b1: [b2][b1], return b1 |
AzureIoTClient | 10:1be0bc9a9deb | 511 | if (b2->size ==0) |
Azure.IoT Build | 0:fa2de1b79154 | 512 | { |
AzureIoTClient | 10:1be0bc9a9deb | 513 | // do nothing |
AzureIoTClient | 10:1be0bc9a9deb | 514 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 515 | } |
Azure.IoT Build | 0:fa2de1b79154 | 516 | else |
Azure.IoT Build | 0:fa2de1b79154 | 517 | { |
AzureIoTClient | 10:1be0bc9a9deb | 518 | // b2->size != 0 |
AzureIoTClient | 10:1be0bc9a9deb | 519 | unsigned char* temp = (unsigned char*)malloc(b1->size + b2->size); |
AzureIoTClient | 10:1be0bc9a9deb | 520 | if (temp == NULL) |
AzureIoTClient | 10:1be0bc9a9deb | 521 | { |
AzureIoTClient | 10:1be0bc9a9deb | 522 | /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/ |
AzureIoTClient | 27:8656a313842b | 523 | LogError("Failure: allocating temp buffer."); |
AzureIoTClient | 21:b92006c5b9ff | 524 | result = __FAILURE__; |
AzureIoTClient | 10:1be0bc9a9deb | 525 | } |
AzureIoTClient | 10:1be0bc9a9deb | 526 | else |
AzureIoTClient | 10:1be0bc9a9deb | 527 | { |
AzureIoTClient | 10:1be0bc9a9deb | 528 | /* Codes_SRS_BUFFER_01_004: [ BUFFER_prepend concatenates handle1 onto handle2 without modifying handle1 and shall return zero on success. ]*/ |
AzureIoTClient | 10:1be0bc9a9deb | 529 | // Append the BUFFER |
AzureIoTClient | 10:1be0bc9a9deb | 530 | (void)memcpy(temp, b2->buffer, b2->size); |
AzureIoTClient | 10:1be0bc9a9deb | 531 | // start from b1->size to append b1 |
AzureIoTClient | 10:1be0bc9a9deb | 532 | (void)memcpy(&temp[b2->size], b1->buffer, b1->size); |
AzureIoTClient | 10:1be0bc9a9deb | 533 | free(b1->buffer); |
AzureIoTClient | 10:1be0bc9a9deb | 534 | b1->buffer = temp; |
AzureIoTClient | 10:1be0bc9a9deb | 535 | b1->size += b2->size; |
AzureIoTClient | 10:1be0bc9a9deb | 536 | result = 0; |
AzureIoTClient | 10:1be0bc9a9deb | 537 | } |
Azure.IoT Build | 0:fa2de1b79154 | 538 | } |
Azure.IoT Build | 0:fa2de1b79154 | 539 | } |
Azure.IoT Build | 0:fa2de1b79154 | 540 | } |
Azure.IoT Build | 0:fa2de1b79154 | 541 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 542 | } |
Azure.IoT Build | 0:fa2de1b79154 | 543 | |
Azure.IoT Build | 0:fa2de1b79154 | 544 | |
Azure.IoT Build | 0:fa2de1b79154 | 545 | /* Codes_SRS_BUFFER_07_025: [BUFFER_u_char shall return a pointer to the underlying unsigned char*.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 546 | unsigned char* BUFFER_u_char(BUFFER_HANDLE handle) |
Azure.IoT Build | 0:fa2de1b79154 | 547 | { |
AzureIoTClient | 10:1be0bc9a9deb | 548 | BUFFER* handleData = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 549 | unsigned char* result; |
AzureIoTClient | 10:1be0bc9a9deb | 550 | if (handle == NULL || handleData->size == 0) |
Azure.IoT Build | 0:fa2de1b79154 | 551 | { |
Azure.IoT Build | 0:fa2de1b79154 | 552 | /* Codes_SRS_BUFFER_07_026: [BUFFER_u_char shall return NULL for any error that is encountered.] */ |
AzureIoTClient | 10:1be0bc9a9deb | 553 | /* Codes_SRS_BUFFER_07_029: [BUFFER_u_char shall return NULL if underlying buffer size is zero.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 554 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 555 | } |
Azure.IoT Build | 0:fa2de1b79154 | 556 | else |
Azure.IoT Build | 0:fa2de1b79154 | 557 | { |
AzureIoTClient | 10:1be0bc9a9deb | 558 | result = handleData->buffer; |
Azure.IoT Build | 0:fa2de1b79154 | 559 | } |
Azure.IoT Build | 0:fa2de1b79154 | 560 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 561 | } |
Azure.IoT Build | 0:fa2de1b79154 | 562 | |
Azure.IoT Build | 0:fa2de1b79154 | 563 | /* Codes_SRS_BUFFER_07_027: [BUFFER_length shall return the size of the underlying buffer.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 564 | size_t BUFFER_length(BUFFER_HANDLE handle) |
Azure.IoT Build | 0:fa2de1b79154 | 565 | { |
Azure.IoT Build | 0:fa2de1b79154 | 566 | size_t result; |
Azure.IoT Build | 0:fa2de1b79154 | 567 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 568 | { |
Azure.IoT Build | 0:fa2de1b79154 | 569 | /* Codes_SRS_BUFFER_07_028: [BUFFER_length shall return zero for any error that is encountered.] */ |
Azure.IoT Build | 0:fa2de1b79154 | 570 | result = 0; |
Azure.IoT Build | 0:fa2de1b79154 | 571 | } |
Azure.IoT Build | 0:fa2de1b79154 | 572 | else |
Azure.IoT Build | 0:fa2de1b79154 | 573 | { |
Azure.IoT Build | 0:fa2de1b79154 | 574 | BUFFER* b = (BUFFER*)handle; |
Azure.IoT Build | 0:fa2de1b79154 | 575 | result = b->size; |
Azure.IoT Build | 0:fa2de1b79154 | 576 | } |
Azure.IoT Build | 0:fa2de1b79154 | 577 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 578 | } |
Azure.IoT Build | 0:fa2de1b79154 | 579 | |
Azure.IoT Build | 0:fa2de1b79154 | 580 | BUFFER_HANDLE BUFFER_clone(BUFFER_HANDLE handle) |
Azure.IoT Build | 0:fa2de1b79154 | 581 | { |
Azure.IoT Build | 0:fa2de1b79154 | 582 | BUFFER_HANDLE result; |
Azure.IoT Build | 0:fa2de1b79154 | 583 | if (handle == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 584 | { |
Azure.IoT Build | 0:fa2de1b79154 | 585 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 586 | } |
Azure.IoT Build | 0:fa2de1b79154 | 587 | else |
Azure.IoT Build | 0:fa2de1b79154 | 588 | { |
Azure.IoT Build | 0:fa2de1b79154 | 589 | BUFFER* suppliedBuff = (BUFFER*)handle; |
AzureIoTClient | 10:1be0bc9a9deb | 590 | BUFFER* b = (BUFFER*)malloc(sizeof(BUFFER)); |
Azure.IoT Build | 0:fa2de1b79154 | 591 | if (b != NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 592 | { |
AzureIoTClient | 10:1be0bc9a9deb | 593 | if (BUFFER_safemalloc(b, suppliedBuff->size) != 0) |
Azure.IoT Build | 0:fa2de1b79154 | 594 | { |
AzureIoTClient | 27:8656a313842b | 595 | LogError("Failure: allocating temp buffer."); |
Azure.IoT Build | 0:fa2de1b79154 | 596 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 597 | } |
Azure.IoT Build | 0:fa2de1b79154 | 598 | else |
Azure.IoT Build | 0:fa2de1b79154 | 599 | { |
AzureIoTClient | 19:2e0811512ceb | 600 | (void)memcpy(b->buffer, suppliedBuff->buffer, suppliedBuff->size); |
Azure.IoT Build | 0:fa2de1b79154 | 601 | b->size = suppliedBuff->size; |
Azure.IoT Build | 0:fa2de1b79154 | 602 | result = (BUFFER_HANDLE)b; |
Azure.IoT Build | 0:fa2de1b79154 | 603 | } |
Azure.IoT Build | 0:fa2de1b79154 | 604 | } |
Azure.IoT Build | 0:fa2de1b79154 | 605 | else |
Azure.IoT Build | 0:fa2de1b79154 | 606 | { |
Azure.IoT Build | 0:fa2de1b79154 | 607 | result = NULL; |
Azure.IoT Build | 0:fa2de1b79154 | 608 | } |
Azure.IoT Build | 0:fa2de1b79154 | 609 | } |
Azure.IoT Build | 0:fa2de1b79154 | 610 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 611 | } |