Azure IoT / azure_c_shared_utility

Azure IoT common library

Dependents:   STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more

buffer.c@21:b92006c5b9ff, 2017-02-24 (annotated)

Committer:
AzureIoTClient
Date:
Fri Feb 24 14:01:41 2017 -0800
Revision:
21:b92006c5b9ff
Parent:
19:2e0811512ceb
Child:
27:8656a313842b
1.1.8

Who changed what in which revision?

UserRevisionLine numberNew 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 19:2e0811512ceb 7 #include "azure_c_shared_utility/gballoc.h"
Azure.IoT Build 0:fa2de1b79154 8 #include "azure_c_shared_utility/buffer_.h"
AzureIoTClient 21:b92006c5b9ff 9 #include "azure_c_shared_utility/optimize_size.h"
Azure.IoT Build 6:c55b013dfc2a 10 #include "azure_c_shared_utility/xlogging.h"
Azure.IoT Build 0:fa2de1b79154 11
Azure.IoT Build 0:fa2de1b79154 12 typedef struct BUFFER_TAG
Azure.IoT Build 0:fa2de1b79154 13 {
Azure.IoT Build 0:fa2de1b79154 14 unsigned char* buffer;
Azure.IoT Build 0:fa2de1b79154 15 size_t size;
Azure.IoT Build 0:fa2de1b79154 16 }BUFFER;
Azure.IoT Build 0:fa2de1b79154 17
Azure.IoT Build 0:fa2de1b79154 18 /* Codes_SRS_BUFFER_07_001: [BUFFER_new shall allocate a BUFFER_HANDLE that will contain a NULL unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 19 BUFFER_HANDLE BUFFER_new(void)
Azure.IoT Build 0:fa2de1b79154 20 {
Azure.IoT Build 0:fa2de1b79154 21 BUFFER* temp = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 22 /* Codes_SRS_BUFFER_07_002: [BUFFER_new shall return NULL on any error that occurs.] */
Azure.IoT Build 0:fa2de1b79154 23 if (temp != NULL)
Azure.IoT Build 0:fa2de1b79154 24 {
Azure.IoT Build 0:fa2de1b79154 25 temp->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 26 temp->size = 0;
Azure.IoT Build 0:fa2de1b79154 27 }
Azure.IoT Build 0:fa2de1b79154 28 return (BUFFER_HANDLE)temp;
Azure.IoT Build 0:fa2de1b79154 29 }
Azure.IoT Build 0:fa2de1b79154 30
AzureIoTClient 10:1be0bc9a9deb 31 static int BUFFER_safemalloc(BUFFER* handleptr, size_t size)
AzureIoTClient 10:1be0bc9a9deb 32 {
AzureIoTClient 10:1be0bc9a9deb 33 int result;
AzureIoTClient 10:1be0bc9a9deb 34 size_t sizetomalloc = size;
AzureIoTClient 10:1be0bc9a9deb 35 if (size == 0)
AzureIoTClient 10:1be0bc9a9deb 36 {
AzureIoTClient 10:1be0bc9a9deb 37 sizetomalloc = 1;
AzureIoTClient 10:1be0bc9a9deb 38 }
AzureIoTClient 10:1be0bc9a9deb 39 handleptr->buffer = (unsigned char*)malloc(sizetomalloc);
AzureIoTClient 10:1be0bc9a9deb 40 if (handleptr->buffer == NULL)
AzureIoTClient 10:1be0bc9a9deb 41 {
AzureIoTClient 10:1be0bc9a9deb 42 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.]*/
AzureIoTClient 21:b92006c5b9ff 43 result = __FAILURE__;
AzureIoTClient 10:1be0bc9a9deb 44 }
AzureIoTClient 10:1be0bc9a9deb 45 else
AzureIoTClient 10:1be0bc9a9deb 46 {
AzureIoTClient 10:1be0bc9a9deb 47 // we still consider the real buffer size is 0
AzureIoTClient 10:1be0bc9a9deb 48 handleptr->size = size;
AzureIoTClient 10:1be0bc9a9deb 49 result = 0;
AzureIoTClient 10:1be0bc9a9deb 50 }
AzureIoTClient 10:1be0bc9a9deb 51 return result;
AzureIoTClient 10:1be0bc9a9deb 52 }
AzureIoTClient 10:1be0bc9a9deb 53
Azure.IoT Build 0:fa2de1b79154 54 BUFFER_HANDLE BUFFER_create(const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 55 {
Azure.IoT Build 0:fa2de1b79154 56 BUFFER* result;
Azure.IoT Build 0:fa2de1b79154 57 /*Codes_SRS_BUFFER_02_001: [If source is NULL then BUFFER_create shall return NULL.]*/
Azure.IoT Build 0:fa2de1b79154 58 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 59 {
Azure.IoT Build 0:fa2de1b79154 60 result = NULL;
Azure.IoT Build 0:fa2de1b79154 61 }
Azure.IoT Build 0:fa2de1b79154 62 else
Azure.IoT Build 0:fa2de1b79154 63 {
Azure.IoT Build 0:fa2de1b79154 64 /*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 65 result = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 66 if (result == NULL)
Azure.IoT Build 0:fa2de1b79154 67 {
Azure.IoT Build 0:fa2de1b79154 68 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.] */
Azure.IoT Build 0:fa2de1b79154 69 /*fallthrough*/
Azure.IoT Build 0:fa2de1b79154 70 }
Azure.IoT Build 0:fa2de1b79154 71 else
Azure.IoT Build 0:fa2de1b79154 72 {
AzureIoTClient 10:1be0bc9a9deb 73 /* 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 74 if (BUFFER_safemalloc(result, size) != 0)
Azure.IoT Build 0:fa2de1b79154 75 {
AzureIoTClient 10:1be0bc9a9deb 76 LogError("unable to BUFFER_safemalloc ");
Azure.IoT Build 0:fa2de1b79154 77 free(result);
Azure.IoT Build 0:fa2de1b79154 78 result = NULL;
Azure.IoT Build 0:fa2de1b79154 79 }
Azure.IoT Build 0:fa2de1b79154 80 else
Azure.IoT Build 0:fa2de1b79154 81 {
Azure.IoT Build 0:fa2de1b79154 82 /*Codes_SRS_BUFFER_02_004: [Otherwise, BUFFER_create shall return a non-NULL handle.] */
AzureIoTClient 19:2e0811512ceb 83 (void)memcpy(result->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 84 }
Azure.IoT Build 0:fa2de1b79154 85 }
Azure.IoT Build 0:fa2de1b79154 86 }
Azure.IoT Build 0:fa2de1b79154 87 return (BUFFER_HANDLE)result;
Azure.IoT Build 0:fa2de1b79154 88 }
Azure.IoT Build 0:fa2de1b79154 89
Azure.IoT Build 0:fa2de1b79154 90 /* 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 91 void BUFFER_delete(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 92 {
Azure.IoT Build 0:fa2de1b79154 93 /* Codes_SRS_BUFFER_07_004: [BUFFER_delete shall not delete any BUFFER_HANDLE that is NULL.] */
Azure.IoT Build 0:fa2de1b79154 94 if (handle != NULL)
Azure.IoT Build 0:fa2de1b79154 95 {
Azure.IoT Build 0:fa2de1b79154 96 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 97 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 98 {
Azure.IoT Build 0:fa2de1b79154 99 /* 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 100 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 101 }
Azure.IoT Build 0:fa2de1b79154 102 free(b);
Azure.IoT Build 0:fa2de1b79154 103 }
Azure.IoT Build 0:fa2de1b79154 104 }
Azure.IoT Build 0:fa2de1b79154 105
Azure.IoT Build 0:fa2de1b79154 106 /*return 0 if the buffer was copied*/
Azure.IoT Build 0:fa2de1b79154 107 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 108 /* 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 109 int BUFFER_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 110 {
Azure.IoT Build 0:fa2de1b79154 111 int result;
Azure.IoT Build 0:fa2de1b79154 112 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 113 {
Azure.IoT Build 0:fa2de1b79154 114 /* Codes_SRS_BUFFER_07_009: [BUFFER_build shall return nonzero if handle is NULL ] */
AzureIoTClient 21:b92006c5b9ff 115 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 116 }
Azure.IoT Build 0:fa2de1b79154 117 /* 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 118 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 119 {
Azure.IoT Build 0:fa2de1b79154 120 /* Codes_SRS_BUFFER_01_003: [If size is zero, source can be NULL.] */
Azure.IoT Build 0:fa2de1b79154 121 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 122 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 123 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 124 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 125
Azure.IoT Build 0:fa2de1b79154 126 result = 0;
Azure.IoT Build 0:fa2de1b79154 127 }
Azure.IoT Build 0:fa2de1b79154 128 else
Azure.IoT Build 0:fa2de1b79154 129 {
Azure.IoT Build 0:fa2de1b79154 130 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 131 {
Azure.IoT Build 0:fa2de1b79154 132 /* Codes_SRS_BUFFER_01_001: [If size is positive and source is NULL, BUFFER_build shall return nonzero] */
AzureIoTClient 21:b92006c5b9ff 133 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 134 }
Azure.IoT Build 0:fa2de1b79154 135 else
Azure.IoT Build 0:fa2de1b79154 136 {
Azure.IoT Build 0:fa2de1b79154 137 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 138 /* Codes_SRS_BUFFER_07_011: [BUFFER_build shall overwrite previous contents if the buffer has been previously allocated.] */
Azure.IoT Build 0:fa2de1b79154 139 unsigned char* newBuffer = (unsigned char*)realloc(b->buffer, size);
Azure.IoT Build 0:fa2de1b79154 140 if (newBuffer == NULL)
Azure.IoT Build 0:fa2de1b79154 141 {
Azure.IoT Build 0:fa2de1b79154 142 /* Codes_SRS_BUFFER_07_010: [BUFFER_build shall return nonzero if any error is encountered.] */
AzureIoTClient 21:b92006c5b9ff 143 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 144 }
Azure.IoT Build 0:fa2de1b79154 145 else
Azure.IoT Build 0:fa2de1b79154 146 {
Azure.IoT Build 0:fa2de1b79154 147 b->buffer = newBuffer;
Azure.IoT Build 0:fa2de1b79154 148 b->size = size;
Azure.IoT Build 0:fa2de1b79154 149 /* 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 150 (void)memcpy(b->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 151
Azure.IoT Build 0:fa2de1b79154 152 result = 0;
Azure.IoT Build 0:fa2de1b79154 153 }
Azure.IoT Build 0:fa2de1b79154 154 }
Azure.IoT Build 0:fa2de1b79154 155 }
Azure.IoT Build 0:fa2de1b79154 156
Azure.IoT Build 0:fa2de1b79154 157 return result;
Azure.IoT Build 0:fa2de1b79154 158 }
Azure.IoT Build 0:fa2de1b79154 159
Azure.IoT Build 0:fa2de1b79154 160 /*return 0 if the buffer was pre-build(that is, had its space allocated)*/
Azure.IoT Build 0:fa2de1b79154 161 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 162 /* 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 163 int BUFFER_pre_build(BUFFER_HANDLE handle, size_t size)
Azure.IoT Build 0:fa2de1b79154 164 {
Azure.IoT Build 0:fa2de1b79154 165 int result;
Azure.IoT Build 0:fa2de1b79154 166 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 167 {
Azure.IoT Build 0:fa2de1b79154 168 /* 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 169 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 170 }
Azure.IoT Build 0:fa2de1b79154 171 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 172 {
Azure.IoT Build 0:fa2de1b79154 173 /* 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 174 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 175 }
Azure.IoT Build 0:fa2de1b79154 176 else
Azure.IoT Build 0:fa2de1b79154 177 {
Azure.IoT Build 0:fa2de1b79154 178 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 179 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 180 {
Azure.IoT Build 0:fa2de1b79154 181 /* Codes_SRS_BUFFER_07_007: [BUFFER_pre_build shall return nonzero if the buffer has been previously allocated and is not NULL.] */
AzureIoTClient 21:b92006c5b9ff 182 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 183 }
Azure.IoT Build 0:fa2de1b79154 184 else
Azure.IoT Build 0:fa2de1b79154 185 {
Azure.IoT Build 0:fa2de1b79154 186 if ((b->buffer = (unsigned char*)malloc(size)) == NULL)
Azure.IoT Build 0:fa2de1b79154 187 {
Azure.IoT Build 0:fa2de1b79154 188 /* Codes_SRS_BUFFER_07_013: [BUFFER_pre_build shall return nonzero if any error is encountered.] */
AzureIoTClient 21:b92006c5b9ff 189 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 190 }
Azure.IoT Build 0:fa2de1b79154 191 else
Azure.IoT Build 0:fa2de1b79154 192 {
Azure.IoT Build 0:fa2de1b79154 193 b->size = size;
Azure.IoT Build 0:fa2de1b79154 194 result = 0;
Azure.IoT Build 0:fa2de1b79154 195 }
Azure.IoT Build 0:fa2de1b79154 196 }
Azure.IoT Build 0:fa2de1b79154 197 }
Azure.IoT Build 0:fa2de1b79154 198 return result;
Azure.IoT Build 0:fa2de1b79154 199 }
Azure.IoT Build 0:fa2de1b79154 200
Azure.IoT Build 0:fa2de1b79154 201 /* Codes_SRS_BUFFER_07_019: [BUFFER_content shall return the data contained within the BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 202 int BUFFER_content(BUFFER_HANDLE handle, const unsigned char** content)
Azure.IoT Build 0:fa2de1b79154 203 {
Azure.IoT Build 0:fa2de1b79154 204 int result;
Azure.IoT Build 0:fa2de1b79154 205 if ((handle == NULL) || (content == NULL))
Azure.IoT Build 0:fa2de1b79154 206 {
Azure.IoT Build 0:fa2de1b79154 207 /* Codes_SRS_BUFFER_07_020: [If the handle and/or content*is NULL BUFFER_content shall return nonzero.] */
AzureIoTClient 21:b92006c5b9ff 208 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 209 }
Azure.IoT Build 0:fa2de1b79154 210 else
Azure.IoT Build 0:fa2de1b79154 211 {
Azure.IoT Build 0:fa2de1b79154 212 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 213 *content = b->buffer;
Azure.IoT Build 0:fa2de1b79154 214 result = 0;
Azure.IoT Build 0:fa2de1b79154 215 }
Azure.IoT Build 0:fa2de1b79154 216 return result;
Azure.IoT Build 0:fa2de1b79154 217 }
Azure.IoT Build 0:fa2de1b79154 218
Azure.IoT Build 0:fa2de1b79154 219 /*return 0 if everything went ok and whatever was built in the buffer was unbuilt*/
Azure.IoT Build 0:fa2de1b79154 220 /* 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 221 extern int BUFFER_unbuild(BUFFER_HANDLE handle)
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_014: [BUFFER_unbuild shall return a nonzero value if BUFFER_HANDLE is NULL.] */
AzureIoTClient 21:b92006c5b9ff 227 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 228 }
Azure.IoT Build 0:fa2de1b79154 229 else
Azure.IoT Build 0:fa2de1b79154 230 {
Azure.IoT Build 0:fa2de1b79154 231 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 232 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 233 {
Azure.IoT Build 0:fa2de1b79154 234 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 235 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 236 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 237 result = 0;
Azure.IoT Build 0:fa2de1b79154 238 }
Azure.IoT Build 0:fa2de1b79154 239 else
Azure.IoT Build 0:fa2de1b79154 240 {
Azure.IoT Build 0:fa2de1b79154 241 /* 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 242 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 243 }
Azure.IoT Build 0:fa2de1b79154 244 }
Azure.IoT Build 0:fa2de1b79154 245 return result;
Azure.IoT Build 0:fa2de1b79154 246 }
Azure.IoT Build 0:fa2de1b79154 247
Azure.IoT Build 0:fa2de1b79154 248 /* Codes_SRS_BUFFER_07_016: [BUFFER_enlarge shall increase the size of the unsigned char* referenced by BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 249 int BUFFER_enlarge(BUFFER_HANDLE handle, size_t enlargeSize)
Azure.IoT Build 0:fa2de1b79154 250 {
Azure.IoT Build 0:fa2de1b79154 251 int result;
Azure.IoT Build 0:fa2de1b79154 252 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 253 {
Azure.IoT Build 0:fa2de1b79154 254 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
AzureIoTClient 21:b92006c5b9ff 255 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 256 }
Azure.IoT Build 0:fa2de1b79154 257 else if (enlargeSize == 0)
Azure.IoT Build 0:fa2de1b79154 258 {
Azure.IoT Build 0:fa2de1b79154 259 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
AzureIoTClient 21:b92006c5b9ff 260 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 261 }
Azure.IoT Build 0:fa2de1b79154 262 else
Azure.IoT Build 0:fa2de1b79154 263 {
Azure.IoT Build 0:fa2de1b79154 264 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 265 unsigned char* temp = (unsigned char*)realloc(b->buffer, b->size + enlargeSize);
Azure.IoT Build 0:fa2de1b79154 266 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 267 {
Azure.IoT Build 0:fa2de1b79154 268 /* Codes_SRS_BUFFER_07_018: [BUFFER_enlarge shall return a nonzero result if any error is encountered.] */
AzureIoTClient 21:b92006c5b9ff 269 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 270 }
Azure.IoT Build 0:fa2de1b79154 271 else
Azure.IoT Build 0:fa2de1b79154 272 {
Azure.IoT Build 0:fa2de1b79154 273 b->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 274 b->size += enlargeSize;
Azure.IoT Build 0:fa2de1b79154 275 result = 0;
Azure.IoT Build 0:fa2de1b79154 276 }
Azure.IoT Build 0:fa2de1b79154 277 }
Azure.IoT Build 0:fa2de1b79154 278 return result;
Azure.IoT Build 0:fa2de1b79154 279 }
Azure.IoT Build 0:fa2de1b79154 280
Azure.IoT Build 0:fa2de1b79154 281 /* 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 282 int BUFFER_size(BUFFER_HANDLE handle, size_t* size)
Azure.IoT Build 0:fa2de1b79154 283 {
Azure.IoT Build 0:fa2de1b79154 284 int result;
Azure.IoT Build 0:fa2de1b79154 285 if ((handle == NULL) || (size == NULL))
Azure.IoT Build 0:fa2de1b79154 286 {
Azure.IoT Build 0:fa2de1b79154 287 /* Codes_SRS_BUFFER_07_022: [BUFFER_size shall return a nonzero value for any error that is encountered.] */
AzureIoTClient 21:b92006c5b9ff 288 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 289 }
Azure.IoT Build 0:fa2de1b79154 290 else
Azure.IoT Build 0:fa2de1b79154 291 {
Azure.IoT Build 0:fa2de1b79154 292 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 293 *size = b->size;
Azure.IoT Build 0:fa2de1b79154 294 result = 0;
Azure.IoT Build 0:fa2de1b79154 295 }
Azure.IoT Build 0:fa2de1b79154 296 return result;
Azure.IoT Build 0:fa2de1b79154 297 }
Azure.IoT Build 0:fa2de1b79154 298
Azure.IoT Build 0:fa2de1b79154 299 /* 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 300 int BUFFER_append(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 301 {
Azure.IoT Build 0:fa2de1b79154 302 int result;
Azure.IoT Build 0:fa2de1b79154 303 if ( (handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2) )
Azure.IoT Build 0:fa2de1b79154 304 {
Azure.IoT Build 0:fa2de1b79154 305 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 21:b92006c5b9ff 306 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 307 }
Azure.IoT Build 0:fa2de1b79154 308 else
Azure.IoT Build 0:fa2de1b79154 309 {
Azure.IoT Build 0:fa2de1b79154 310 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 311 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 312 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 313 {
Azure.IoT Build 0:fa2de1b79154 314 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 21:b92006c5b9ff 315 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 316 }
Azure.IoT Build 0:fa2de1b79154 317 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 318 {
Azure.IoT Build 0:fa2de1b79154 319 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 21:b92006c5b9ff 320 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 321 }
Azure.IoT Build 0:fa2de1b79154 322 else
Azure.IoT Build 0:fa2de1b79154 323 {
AzureIoTClient 10:1be0bc9a9deb 324 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 325 {
AzureIoTClient 10:1be0bc9a9deb 326 // b2->size = 0, whatever b1->size is, do nothing
AzureIoTClient 10:1be0bc9a9deb 327 result = 0;
Azure.IoT Build 0:fa2de1b79154 328 }
Azure.IoT Build 0:fa2de1b79154 329 else
Azure.IoT Build 0:fa2de1b79154 330 {
AzureIoTClient 10:1be0bc9a9deb 331 // b2->size != 0, whatever b1->size is
AzureIoTClient 10:1be0bc9a9deb 332 unsigned char* temp = (unsigned char*)realloc(b1->buffer, b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 333 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 334 {
AzureIoTClient 10:1be0bc9a9deb 335 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 21:b92006c5b9ff 336 result = __FAILURE__;
AzureIoTClient 10:1be0bc9a9deb 337 }
AzureIoTClient 10:1be0bc9a9deb 338 else
AzureIoTClient 10:1be0bc9a9deb 339 {
AzureIoTClient 10:1be0bc9a9deb 340 /* Codes_SRS_BUFFER_07_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.]*/
AzureIoTClient 10:1be0bc9a9deb 341 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 342 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 343 (void)memcpy(&b1->buffer[b1->size], b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 344 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 345 result = 0;
AzureIoTClient 10:1be0bc9a9deb 346 }
Azure.IoT Build 0:fa2de1b79154 347 }
Azure.IoT Build 0:fa2de1b79154 348 }
Azure.IoT Build 0:fa2de1b79154 349 }
Azure.IoT Build 0:fa2de1b79154 350 return result;
Azure.IoT Build 0:fa2de1b79154 351 }
Azure.IoT Build 0:fa2de1b79154 352
Azure.IoT Build 0:fa2de1b79154 353 int BUFFER_prepend(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 354 {
Azure.IoT Build 0:fa2de1b79154 355 int result;
Azure.IoT Build 0:fa2de1b79154 356 if ((handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2))
Azure.IoT Build 0:fa2de1b79154 357 {
AzureIoTClient 10:1be0bc9a9deb 358 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 21:b92006c5b9ff 359 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 360 }
Azure.IoT Build 0:fa2de1b79154 361 else
Azure.IoT Build 0:fa2de1b79154 362 {
Azure.IoT Build 0:fa2de1b79154 363 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 364 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 365 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 366 {
AzureIoTClient 10:1be0bc9a9deb 367 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 21:b92006c5b9ff 368 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 369 }
Azure.IoT Build 0:fa2de1b79154 370 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 371 {
AzureIoTClient 10:1be0bc9a9deb 372 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 21:b92006c5b9ff 373 result = __FAILURE__;
Azure.IoT Build 0:fa2de1b79154 374 }
Azure.IoT Build 0:fa2de1b79154 375 else
Azure.IoT Build 0:fa2de1b79154 376 {
AzureIoTClient 10:1be0bc9a9deb 377 //put b2 ahead of b1: [b2][b1], return b1
AzureIoTClient 10:1be0bc9a9deb 378 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 379 {
AzureIoTClient 10:1be0bc9a9deb 380 // do nothing
AzureIoTClient 10:1be0bc9a9deb 381 result = 0;
Azure.IoT Build 0:fa2de1b79154 382 }
Azure.IoT Build 0:fa2de1b79154 383 else
Azure.IoT Build 0:fa2de1b79154 384 {
AzureIoTClient 10:1be0bc9a9deb 385 // b2->size != 0
AzureIoTClient 10:1be0bc9a9deb 386 unsigned char* temp = (unsigned char*)malloc(b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 387 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 388 {
AzureIoTClient 10:1be0bc9a9deb 389 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 21:b92006c5b9ff 390 result = __FAILURE__;
AzureIoTClient 10:1be0bc9a9deb 391 }
AzureIoTClient 10:1be0bc9a9deb 392 else
AzureIoTClient 10:1be0bc9a9deb 393 {
AzureIoTClient 10:1be0bc9a9deb 394 /* Codes_SRS_BUFFER_01_004: [ BUFFER_prepend concatenates handle1 onto handle2 without modifying handle1 and shall return zero on success. ]*/
AzureIoTClient 10:1be0bc9a9deb 395 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 396 (void)memcpy(temp, b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 397 // start from b1->size to append b1
AzureIoTClient 10:1be0bc9a9deb 398 (void)memcpy(&temp[b2->size], b1->buffer, b1->size);
AzureIoTClient 10:1be0bc9a9deb 399 free(b1->buffer);
AzureIoTClient 10:1be0bc9a9deb 400 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 401 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 402 result = 0;
AzureIoTClient 10:1be0bc9a9deb 403 }
Azure.IoT Build 0:fa2de1b79154 404 }
Azure.IoT Build 0:fa2de1b79154 405 }
Azure.IoT Build 0:fa2de1b79154 406 }
Azure.IoT Build 0:fa2de1b79154 407 return result;
Azure.IoT Build 0:fa2de1b79154 408 }
Azure.IoT Build 0:fa2de1b79154 409
Azure.IoT Build 0:fa2de1b79154 410
Azure.IoT Build 0:fa2de1b79154 411 /* Codes_SRS_BUFFER_07_025: [BUFFER_u_char shall return a pointer to the underlying unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 412 unsigned char* BUFFER_u_char(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 413 {
AzureIoTClient 10:1be0bc9a9deb 414 BUFFER* handleData = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 415 unsigned char* result;
AzureIoTClient 10:1be0bc9a9deb 416 if (handle == NULL || handleData->size == 0)
Azure.IoT Build 0:fa2de1b79154 417 {
Azure.IoT Build 0:fa2de1b79154 418 /* Codes_SRS_BUFFER_07_026: [BUFFER_u_char shall return NULL for any error that is encountered.] */
AzureIoTClient 10:1be0bc9a9deb 419 /* Codes_SRS_BUFFER_07_029: [BUFFER_u_char shall return NULL if underlying buffer size is zero.] */
Azure.IoT Build 0:fa2de1b79154 420 result = NULL;
Azure.IoT Build 0:fa2de1b79154 421 }
Azure.IoT Build 0:fa2de1b79154 422 else
Azure.IoT Build 0:fa2de1b79154 423 {
AzureIoTClient 10:1be0bc9a9deb 424 result = handleData->buffer;
Azure.IoT Build 0:fa2de1b79154 425 }
Azure.IoT Build 0:fa2de1b79154 426 return result;
Azure.IoT Build 0:fa2de1b79154 427 }
Azure.IoT Build 0:fa2de1b79154 428
Azure.IoT Build 0:fa2de1b79154 429 /* Codes_SRS_BUFFER_07_027: [BUFFER_length shall return the size of the underlying buffer.] */
Azure.IoT Build 0:fa2de1b79154 430 size_t BUFFER_length(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 431 {
Azure.IoT Build 0:fa2de1b79154 432 size_t result;
Azure.IoT Build 0:fa2de1b79154 433 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 434 {
Azure.IoT Build 0:fa2de1b79154 435 /* Codes_SRS_BUFFER_07_028: [BUFFER_length shall return zero for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 436 result = 0;
Azure.IoT Build 0:fa2de1b79154 437 }
Azure.IoT Build 0:fa2de1b79154 438 else
Azure.IoT Build 0:fa2de1b79154 439 {
Azure.IoT Build 0:fa2de1b79154 440 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 441 result = b->size;
Azure.IoT Build 0:fa2de1b79154 442 }
Azure.IoT Build 0:fa2de1b79154 443 return result;
Azure.IoT Build 0:fa2de1b79154 444 }
Azure.IoT Build 0:fa2de1b79154 445
Azure.IoT Build 0:fa2de1b79154 446 BUFFER_HANDLE BUFFER_clone(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 447 {
Azure.IoT Build 0:fa2de1b79154 448 BUFFER_HANDLE result;
Azure.IoT Build 0:fa2de1b79154 449 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 450 {
Azure.IoT Build 0:fa2de1b79154 451 result = NULL;
Azure.IoT Build 0:fa2de1b79154 452 }
Azure.IoT Build 0:fa2de1b79154 453 else
Azure.IoT Build 0:fa2de1b79154 454 {
Azure.IoT Build 0:fa2de1b79154 455 BUFFER* suppliedBuff = (BUFFER*)handle;
AzureIoTClient 10:1be0bc9a9deb 456 BUFFER* b = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 457 if (b != NULL)
Azure.IoT Build 0:fa2de1b79154 458 {
AzureIoTClient 10:1be0bc9a9deb 459 if (BUFFER_safemalloc(b, suppliedBuff->size) != 0)
Azure.IoT Build 0:fa2de1b79154 460 {
Azure.IoT Build 0:fa2de1b79154 461 result = NULL;
Azure.IoT Build 0:fa2de1b79154 462 }
Azure.IoT Build 0:fa2de1b79154 463 else
Azure.IoT Build 0:fa2de1b79154 464 {
AzureIoTClient 19:2e0811512ceb 465 (void)memcpy(b->buffer, suppliedBuff->buffer, suppliedBuff->size);
Azure.IoT Build 0:fa2de1b79154 466 b->size = suppliedBuff->size;
Azure.IoT Build 0:fa2de1b79154 467 result = (BUFFER_HANDLE)b;
Azure.IoT Build 0:fa2de1b79154 468 }
Azure.IoT Build 0:fa2de1b79154 469 }
Azure.IoT Build 0:fa2de1b79154 470 else
Azure.IoT Build 0:fa2de1b79154 471 {
Azure.IoT Build 0:fa2de1b79154 472 result = NULL;
Azure.IoT Build 0:fa2de1b79154 473 }
Azure.IoT Build 0:fa2de1b79154 474 }
Azure.IoT Build 0:fa2de1b79154 475 return result;
Azure.IoT Build 0:fa2de1b79154 476 }