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@10:1be0bc9a9deb, 2016-08-26 (annotated)

Committer:
AzureIoTClient
Date:
Fri Aug 26 12:59:40 2016 -0700
Revision:
10:1be0bc9a9deb
Parent:
6:c55b013dfc2a
Child:
19:2e0811512ceb
1.0.10

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 //
Azure.IoT Build 0:fa2de1b79154 5 // PUT NO INCLUDES BEFORE HERE
Azure.IoT Build 0:fa2de1b79154 6 //
Azure.IoT Build 0:fa2de1b79154 7 #include <stdlib.h>
Azure.IoT Build 0:fa2de1b79154 8 #ifdef _CRTDBG_MAP_ALLOC
Azure.IoT Build 0:fa2de1b79154 9 #include <crtdbg.h>
Azure.IoT Build 0:fa2de1b79154 10 #endif
Azure.IoT Build 0:fa2de1b79154 11 #include "azure_c_shared_utility/gballoc.h"
Azure.IoT Build 0:fa2de1b79154 12
Azure.IoT Build 0:fa2de1b79154 13 #include <stddef.h>
Azure.IoT Build 0:fa2de1b79154 14 #include <string.h>
Azure.IoT Build 0:fa2de1b79154 15 //
Azure.IoT Build 0:fa2de1b79154 16 // PUT NO CLIENT LIBRARY INCLUDES BEFORE HERE
Azure.IoT Build 0:fa2de1b79154 17 //
Azure.IoT Build 0:fa2de1b79154 18
Azure.IoT Build 0:fa2de1b79154 19 #include "azure_c_shared_utility/buffer_.h"
Azure.IoT Build 6:c55b013dfc2a 20 #include "azure_c_shared_utility/xlogging.h"
Azure.IoT Build 0:fa2de1b79154 21
Azure.IoT Build 0:fa2de1b79154 22 typedef struct BUFFER_TAG
Azure.IoT Build 0:fa2de1b79154 23 {
Azure.IoT Build 0:fa2de1b79154 24 unsigned char* buffer;
Azure.IoT Build 0:fa2de1b79154 25 size_t size;
Azure.IoT Build 0:fa2de1b79154 26 }BUFFER;
Azure.IoT Build 0:fa2de1b79154 27
Azure.IoT Build 0:fa2de1b79154 28 /* Codes_SRS_BUFFER_07_001: [BUFFER_new shall allocate a BUFFER_HANDLE that will contain a NULL unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 29 BUFFER_HANDLE BUFFER_new(void)
Azure.IoT Build 0:fa2de1b79154 30 {
Azure.IoT Build 0:fa2de1b79154 31 BUFFER* temp = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 32 /* Codes_SRS_BUFFER_07_002: [BUFFER_new shall return NULL on any error that occurs.] */
Azure.IoT Build 0:fa2de1b79154 33 if (temp != NULL)
Azure.IoT Build 0:fa2de1b79154 34 {
Azure.IoT Build 0:fa2de1b79154 35 temp->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 36 temp->size = 0;
Azure.IoT Build 0:fa2de1b79154 37 }
Azure.IoT Build 0:fa2de1b79154 38 return (BUFFER_HANDLE)temp;
Azure.IoT Build 0:fa2de1b79154 39 }
Azure.IoT Build 0:fa2de1b79154 40
AzureIoTClient 10:1be0bc9a9deb 41 static int BUFFER_safemalloc(BUFFER* handleptr, size_t size)
AzureIoTClient 10:1be0bc9a9deb 42 {
AzureIoTClient 10:1be0bc9a9deb 43 int result;
AzureIoTClient 10:1be0bc9a9deb 44 size_t sizetomalloc = size;
AzureIoTClient 10:1be0bc9a9deb 45 if (size == 0)
AzureIoTClient 10:1be0bc9a9deb 46 {
AzureIoTClient 10:1be0bc9a9deb 47 sizetomalloc = 1;
AzureIoTClient 10:1be0bc9a9deb 48 }
AzureIoTClient 10:1be0bc9a9deb 49 handleptr->buffer = (unsigned char*)malloc(sizetomalloc);
AzureIoTClient 10:1be0bc9a9deb 50 if (handleptr->buffer == NULL)
AzureIoTClient 10:1be0bc9a9deb 51 {
AzureIoTClient 10:1be0bc9a9deb 52 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.]*/
AzureIoTClient 10:1be0bc9a9deb 53 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 54 }
AzureIoTClient 10:1be0bc9a9deb 55 else
AzureIoTClient 10:1be0bc9a9deb 56 {
AzureIoTClient 10:1be0bc9a9deb 57 // we still consider the real buffer size is 0
AzureIoTClient 10:1be0bc9a9deb 58 handleptr->size = size;
AzureIoTClient 10:1be0bc9a9deb 59 result = 0;
AzureIoTClient 10:1be0bc9a9deb 60 }
AzureIoTClient 10:1be0bc9a9deb 61 return result;
AzureIoTClient 10:1be0bc9a9deb 62 }
AzureIoTClient 10:1be0bc9a9deb 63
Azure.IoT Build 0:fa2de1b79154 64 BUFFER_HANDLE BUFFER_create(const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 65 {
Azure.IoT Build 0:fa2de1b79154 66 BUFFER* result;
Azure.IoT Build 0:fa2de1b79154 67 /*Codes_SRS_BUFFER_02_001: [If source is NULL then BUFFER_create shall return NULL.]*/
Azure.IoT Build 0:fa2de1b79154 68 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 69 {
Azure.IoT Build 0:fa2de1b79154 70 result = NULL;
Azure.IoT Build 0:fa2de1b79154 71 }
Azure.IoT Build 0:fa2de1b79154 72 else
Azure.IoT Build 0:fa2de1b79154 73 {
Azure.IoT Build 0:fa2de1b79154 74 /*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 75 result = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 76 if (result == NULL)
Azure.IoT Build 0:fa2de1b79154 77 {
Azure.IoT Build 0:fa2de1b79154 78 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.] */
Azure.IoT Build 0:fa2de1b79154 79 /*fallthrough*/
Azure.IoT Build 0:fa2de1b79154 80 }
Azure.IoT Build 0:fa2de1b79154 81 else
Azure.IoT Build 0:fa2de1b79154 82 {
AzureIoTClient 10:1be0bc9a9deb 83 /* 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 84 if (BUFFER_safemalloc(result, size) != 0)
Azure.IoT Build 0:fa2de1b79154 85 {
AzureIoTClient 10:1be0bc9a9deb 86 LogError("unable to BUFFER_safemalloc ");
Azure.IoT Build 0:fa2de1b79154 87 free(result);
Azure.IoT Build 0:fa2de1b79154 88 result = NULL;
Azure.IoT Build 0:fa2de1b79154 89 }
Azure.IoT Build 0:fa2de1b79154 90 else
Azure.IoT Build 0:fa2de1b79154 91 {
Azure.IoT Build 0:fa2de1b79154 92 /*Codes_SRS_BUFFER_02_004: [Otherwise, BUFFER_create shall return a non-NULL handle.] */
Azure.IoT Build 0:fa2de1b79154 93 memcpy(result->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 94 }
Azure.IoT Build 0:fa2de1b79154 95 }
Azure.IoT Build 0:fa2de1b79154 96 }
Azure.IoT Build 0:fa2de1b79154 97 return (BUFFER_HANDLE)result;
Azure.IoT Build 0:fa2de1b79154 98 }
Azure.IoT Build 0:fa2de1b79154 99
Azure.IoT Build 0:fa2de1b79154 100 /* 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 101 void BUFFER_delete(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 102 {
Azure.IoT Build 0:fa2de1b79154 103 /* Codes_SRS_BUFFER_07_004: [BUFFER_delete shall not delete any BUFFER_HANDLE that is NULL.] */
Azure.IoT Build 0:fa2de1b79154 104 if (handle != NULL)
Azure.IoT Build 0:fa2de1b79154 105 {
Azure.IoT Build 0:fa2de1b79154 106 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 107 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 108 {
Azure.IoT Build 0:fa2de1b79154 109 /* 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 110 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 111 }
Azure.IoT Build 0:fa2de1b79154 112 free(b);
Azure.IoT Build 0:fa2de1b79154 113 }
Azure.IoT Build 0:fa2de1b79154 114 }
Azure.IoT Build 0:fa2de1b79154 115
Azure.IoT Build 0:fa2de1b79154 116 /*return 0 if the buffer was copied*/
Azure.IoT Build 0:fa2de1b79154 117 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 118 /* 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 119 int BUFFER_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 120 {
Azure.IoT Build 0:fa2de1b79154 121 int result;
Azure.IoT Build 0:fa2de1b79154 122 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 123 {
Azure.IoT Build 0:fa2de1b79154 124 /* Codes_SRS_BUFFER_07_009: [BUFFER_build shall return nonzero if handle is NULL ] */
Azure.IoT Build 0:fa2de1b79154 125 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 126 }
Azure.IoT Build 0:fa2de1b79154 127 /* 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 128 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 129 {
Azure.IoT Build 0:fa2de1b79154 130 /* Codes_SRS_BUFFER_01_003: [If size is zero, source can be NULL.] */
Azure.IoT Build 0:fa2de1b79154 131 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 132 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 133 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 134 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 135
Azure.IoT Build 0:fa2de1b79154 136 result = 0;
Azure.IoT Build 0:fa2de1b79154 137 }
Azure.IoT Build 0:fa2de1b79154 138 else
Azure.IoT Build 0:fa2de1b79154 139 {
Azure.IoT Build 0:fa2de1b79154 140 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 141 {
Azure.IoT Build 0:fa2de1b79154 142 /* Codes_SRS_BUFFER_01_001: [If size is positive and source is NULL, BUFFER_build shall return nonzero] */
Azure.IoT Build 0:fa2de1b79154 143 result = __LINE__;
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 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 148 /* Codes_SRS_BUFFER_07_011: [BUFFER_build shall overwrite previous contents if the buffer has been previously allocated.] */
Azure.IoT Build 0:fa2de1b79154 149 unsigned char* newBuffer = (unsigned char*)realloc(b->buffer, size);
Azure.IoT Build 0:fa2de1b79154 150 if (newBuffer == NULL)
Azure.IoT Build 0:fa2de1b79154 151 {
Azure.IoT Build 0:fa2de1b79154 152 /* Codes_SRS_BUFFER_07_010: [BUFFER_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 153 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 154 }
Azure.IoT Build 0:fa2de1b79154 155 else
Azure.IoT Build 0:fa2de1b79154 156 {
Azure.IoT Build 0:fa2de1b79154 157 b->buffer = newBuffer;
Azure.IoT Build 0:fa2de1b79154 158 b->size = size;
Azure.IoT Build 0:fa2de1b79154 159 /* 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 160 (void)memcpy(b->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 161
Azure.IoT Build 0:fa2de1b79154 162 result = 0;
Azure.IoT Build 0:fa2de1b79154 163 }
Azure.IoT Build 0:fa2de1b79154 164 }
Azure.IoT Build 0:fa2de1b79154 165 }
Azure.IoT Build 0:fa2de1b79154 166
Azure.IoT Build 0:fa2de1b79154 167 return result;
Azure.IoT Build 0:fa2de1b79154 168 }
Azure.IoT Build 0:fa2de1b79154 169
Azure.IoT Build 0:fa2de1b79154 170 /*return 0 if the buffer was pre-build(that is, had its space allocated)*/
Azure.IoT Build 0:fa2de1b79154 171 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 172 /* 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 173 int BUFFER_pre_build(BUFFER_HANDLE handle, size_t size)
Azure.IoT Build 0:fa2de1b79154 174 {
Azure.IoT Build 0:fa2de1b79154 175 int result;
Azure.IoT Build 0:fa2de1b79154 176 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 177 {
Azure.IoT Build 0:fa2de1b79154 178 /* Codes_SRS_BUFFER_07_006: [If handle is NULL or size is 0 then BUFFER_pre_build shall return a nonzero value.] */
Azure.IoT Build 0:fa2de1b79154 179 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 180 }
Azure.IoT Build 0:fa2de1b79154 181 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 182 {
Azure.IoT Build 0:fa2de1b79154 183 /* Codes_SRS_BUFFER_07_006: [If handle is NULL or size is 0 then BUFFER_pre_build shall return a nonzero value.] */
Azure.IoT Build 0:fa2de1b79154 184 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 185 }
Azure.IoT Build 0:fa2de1b79154 186 else
Azure.IoT Build 0:fa2de1b79154 187 {
Azure.IoT Build 0:fa2de1b79154 188 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 189 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 190 {
Azure.IoT Build 0:fa2de1b79154 191 /* Codes_SRS_BUFFER_07_007: [BUFFER_pre_build shall return nonzero if the buffer has been previously allocated and is not NULL.] */
Azure.IoT Build 0:fa2de1b79154 192 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 193 }
Azure.IoT Build 0:fa2de1b79154 194 else
Azure.IoT Build 0:fa2de1b79154 195 {
Azure.IoT Build 0:fa2de1b79154 196 if ((b->buffer = (unsigned char*)malloc(size)) == NULL)
Azure.IoT Build 0:fa2de1b79154 197 {
Azure.IoT Build 0:fa2de1b79154 198 /* Codes_SRS_BUFFER_07_013: [BUFFER_pre_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 199 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 200 }
Azure.IoT Build 0:fa2de1b79154 201 else
Azure.IoT Build 0:fa2de1b79154 202 {
Azure.IoT Build 0:fa2de1b79154 203 b->size = size;
Azure.IoT Build 0:fa2de1b79154 204 result = 0;
Azure.IoT Build 0:fa2de1b79154 205 }
Azure.IoT Build 0:fa2de1b79154 206 }
Azure.IoT Build 0:fa2de1b79154 207 }
Azure.IoT Build 0:fa2de1b79154 208 return result;
Azure.IoT Build 0:fa2de1b79154 209 }
Azure.IoT Build 0:fa2de1b79154 210
Azure.IoT Build 0:fa2de1b79154 211 /* Codes_SRS_BUFFER_07_019: [BUFFER_content shall return the data contained within the BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 212 int BUFFER_content(BUFFER_HANDLE handle, const unsigned char** content)
Azure.IoT Build 0:fa2de1b79154 213 {
Azure.IoT Build 0:fa2de1b79154 214 int result;
Azure.IoT Build 0:fa2de1b79154 215 if ((handle == NULL) || (content == NULL))
Azure.IoT Build 0:fa2de1b79154 216 {
Azure.IoT Build 0:fa2de1b79154 217 /* Codes_SRS_BUFFER_07_020: [If the handle and/or content*is NULL BUFFER_content shall return nonzero.] */
Azure.IoT Build 0:fa2de1b79154 218 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 219 }
Azure.IoT Build 0:fa2de1b79154 220 else
Azure.IoT Build 0:fa2de1b79154 221 {
Azure.IoT Build 0:fa2de1b79154 222 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 223 *content = b->buffer;
Azure.IoT Build 0:fa2de1b79154 224 result = 0;
Azure.IoT Build 0:fa2de1b79154 225 }
Azure.IoT Build 0:fa2de1b79154 226 return result;
Azure.IoT Build 0:fa2de1b79154 227 }
Azure.IoT Build 0:fa2de1b79154 228
Azure.IoT Build 0:fa2de1b79154 229 /*return 0 if everything went ok and whatever was built in the buffer was unbuilt*/
Azure.IoT Build 0:fa2de1b79154 230 /* 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 231 extern int BUFFER_unbuild(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 232 {
Azure.IoT Build 0:fa2de1b79154 233 int result;
Azure.IoT Build 0:fa2de1b79154 234 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 235 {
Azure.IoT Build 0:fa2de1b79154 236 /* Codes_SRS_BUFFER_07_014: [BUFFER_unbuild shall return a nonzero value if BUFFER_HANDLE is NULL.] */
Azure.IoT Build 0:fa2de1b79154 237 result = __LINE__;
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 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 242 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 243 {
Azure.IoT Build 0:fa2de1b79154 244 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 245 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 246 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 247 result = 0;
Azure.IoT Build 0:fa2de1b79154 248 }
Azure.IoT Build 0:fa2de1b79154 249 else
Azure.IoT Build 0:fa2de1b79154 250 {
Azure.IoT Build 0:fa2de1b79154 251 /* Codes_SRS_BUFFER_07_015: [BUFFER_unbuild shall return a nonzero value if the unsigned char* referenced by BUFFER_HANDLE is NULL.] */
Azure.IoT Build 0:fa2de1b79154 252 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 253 }
Azure.IoT Build 0:fa2de1b79154 254 }
Azure.IoT Build 0:fa2de1b79154 255 return result;
Azure.IoT Build 0:fa2de1b79154 256 }
Azure.IoT Build 0:fa2de1b79154 257
Azure.IoT Build 0:fa2de1b79154 258 /* Codes_SRS_BUFFER_07_016: [BUFFER_enlarge shall increase the size of the unsigned char* referenced by BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 259 int BUFFER_enlarge(BUFFER_HANDLE handle, size_t enlargeSize)
Azure.IoT Build 0:fa2de1b79154 260 {
Azure.IoT Build 0:fa2de1b79154 261 int result;
Azure.IoT Build 0:fa2de1b79154 262 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 263 {
Azure.IoT Build 0:fa2de1b79154 264 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 265 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 266 }
Azure.IoT Build 0:fa2de1b79154 267 else if (enlargeSize == 0)
Azure.IoT Build 0:fa2de1b79154 268 {
Azure.IoT Build 0:fa2de1b79154 269 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 270 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 271 }
Azure.IoT Build 0:fa2de1b79154 272 else
Azure.IoT Build 0:fa2de1b79154 273 {
Azure.IoT Build 0:fa2de1b79154 274 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 275 unsigned char* temp = (unsigned char*)realloc(b->buffer, b->size + enlargeSize);
Azure.IoT Build 0:fa2de1b79154 276 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 277 {
Azure.IoT Build 0:fa2de1b79154 278 /* Codes_SRS_BUFFER_07_018: [BUFFER_enlarge shall return a nonzero result if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 279 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 280 }
Azure.IoT Build 0:fa2de1b79154 281 else
Azure.IoT Build 0:fa2de1b79154 282 {
Azure.IoT Build 0:fa2de1b79154 283 b->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 284 b->size += enlargeSize;
Azure.IoT Build 0:fa2de1b79154 285 result = 0;
Azure.IoT Build 0:fa2de1b79154 286 }
Azure.IoT Build 0:fa2de1b79154 287 }
Azure.IoT Build 0:fa2de1b79154 288 return result;
Azure.IoT Build 0:fa2de1b79154 289 }
Azure.IoT Build 0:fa2de1b79154 290
Azure.IoT Build 0:fa2de1b79154 291 /* 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 292 int BUFFER_size(BUFFER_HANDLE handle, size_t* size)
Azure.IoT Build 0:fa2de1b79154 293 {
Azure.IoT Build 0:fa2de1b79154 294 int result;
Azure.IoT Build 0:fa2de1b79154 295 if ((handle == NULL) || (size == NULL))
Azure.IoT Build 0:fa2de1b79154 296 {
Azure.IoT Build 0:fa2de1b79154 297 /* Codes_SRS_BUFFER_07_022: [BUFFER_size shall return a nonzero value for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 298 result = __LINE__;
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 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 303 *size = b->size;
Azure.IoT Build 0:fa2de1b79154 304 result = 0;
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_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.] */
Azure.IoT Build 0:fa2de1b79154 310 int BUFFER_append(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 311 {
Azure.IoT Build 0:fa2de1b79154 312 int result;
Azure.IoT Build 0:fa2de1b79154 313 if ( (handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2) )
Azure.IoT Build 0:fa2de1b79154 314 {
Azure.IoT Build 0:fa2de1b79154 315 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 316 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 317 }
Azure.IoT Build 0:fa2de1b79154 318 else
Azure.IoT Build 0:fa2de1b79154 319 {
Azure.IoT Build 0:fa2de1b79154 320 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 321 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 322 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 323 {
Azure.IoT Build 0:fa2de1b79154 324 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 325 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 326 }
Azure.IoT Build 0:fa2de1b79154 327 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 328 {
Azure.IoT Build 0:fa2de1b79154 329 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 330 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 331 }
Azure.IoT Build 0:fa2de1b79154 332 else
Azure.IoT Build 0:fa2de1b79154 333 {
AzureIoTClient 10:1be0bc9a9deb 334 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 335 {
AzureIoTClient 10:1be0bc9a9deb 336 // b2->size = 0, whatever b1->size is, do nothing
AzureIoTClient 10:1be0bc9a9deb 337 result = 0;
Azure.IoT Build 0:fa2de1b79154 338 }
Azure.IoT Build 0:fa2de1b79154 339 else
Azure.IoT Build 0:fa2de1b79154 340 {
AzureIoTClient 10:1be0bc9a9deb 341 // b2->size != 0, whatever b1->size is
AzureIoTClient 10:1be0bc9a9deb 342 unsigned char* temp = (unsigned char*)realloc(b1->buffer, b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 343 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 344 {
AzureIoTClient 10:1be0bc9a9deb 345 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 10:1be0bc9a9deb 346 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 347 }
AzureIoTClient 10:1be0bc9a9deb 348 else
AzureIoTClient 10:1be0bc9a9deb 349 {
AzureIoTClient 10:1be0bc9a9deb 350 /* Codes_SRS_BUFFER_07_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.]*/
AzureIoTClient 10:1be0bc9a9deb 351 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 352 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 353 (void)memcpy(&b1->buffer[b1->size], b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 354 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 355 result = 0;
AzureIoTClient 10:1be0bc9a9deb 356 }
Azure.IoT Build 0:fa2de1b79154 357 }
Azure.IoT Build 0:fa2de1b79154 358 }
Azure.IoT Build 0:fa2de1b79154 359 }
Azure.IoT Build 0:fa2de1b79154 360 return result;
Azure.IoT Build 0:fa2de1b79154 361 }
Azure.IoT Build 0:fa2de1b79154 362
Azure.IoT Build 0:fa2de1b79154 363 int BUFFER_prepend(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 364 {
Azure.IoT Build 0:fa2de1b79154 365 int result;
Azure.IoT Build 0:fa2de1b79154 366 if ((handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2))
Azure.IoT Build 0:fa2de1b79154 367 {
AzureIoTClient 10:1be0bc9a9deb 368 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 369 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 370 }
Azure.IoT Build 0:fa2de1b79154 371 else
Azure.IoT Build 0:fa2de1b79154 372 {
Azure.IoT Build 0:fa2de1b79154 373 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 374 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 375 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 376 {
AzureIoTClient 10:1be0bc9a9deb 377 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 378 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 379 }
Azure.IoT Build 0:fa2de1b79154 380 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 381 {
AzureIoTClient 10:1be0bc9a9deb 382 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 383 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 384 }
Azure.IoT Build 0:fa2de1b79154 385 else
Azure.IoT Build 0:fa2de1b79154 386 {
AzureIoTClient 10:1be0bc9a9deb 387 //put b2 ahead of b1: [b2][b1], return b1
AzureIoTClient 10:1be0bc9a9deb 388 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 389 {
AzureIoTClient 10:1be0bc9a9deb 390 // do nothing
AzureIoTClient 10:1be0bc9a9deb 391 result = 0;
Azure.IoT Build 0:fa2de1b79154 392 }
Azure.IoT Build 0:fa2de1b79154 393 else
Azure.IoT Build 0:fa2de1b79154 394 {
AzureIoTClient 10:1be0bc9a9deb 395 // b2->size != 0
AzureIoTClient 10:1be0bc9a9deb 396 unsigned char* temp = (unsigned char*)malloc(b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 397 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 398 {
AzureIoTClient 10:1be0bc9a9deb 399 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 10:1be0bc9a9deb 400 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 401 }
AzureIoTClient 10:1be0bc9a9deb 402 else
AzureIoTClient 10:1be0bc9a9deb 403 {
AzureIoTClient 10:1be0bc9a9deb 404 /* Codes_SRS_BUFFER_01_004: [ BUFFER_prepend concatenates handle1 onto handle2 without modifying handle1 and shall return zero on success. ]*/
AzureIoTClient 10:1be0bc9a9deb 405 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 406 (void)memcpy(temp, b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 407 // start from b1->size to append b1
AzureIoTClient 10:1be0bc9a9deb 408 (void)memcpy(&temp[b2->size], b1->buffer, b1->size);
AzureIoTClient 10:1be0bc9a9deb 409 free(b1->buffer);
AzureIoTClient 10:1be0bc9a9deb 410 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 411 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 412 result = 0;
AzureIoTClient 10:1be0bc9a9deb 413 }
Azure.IoT Build 0:fa2de1b79154 414 }
Azure.IoT Build 0:fa2de1b79154 415 }
Azure.IoT Build 0:fa2de1b79154 416 }
Azure.IoT Build 0:fa2de1b79154 417 return result;
Azure.IoT Build 0:fa2de1b79154 418 }
Azure.IoT Build 0:fa2de1b79154 419
Azure.IoT Build 0:fa2de1b79154 420
Azure.IoT Build 0:fa2de1b79154 421 /* Codes_SRS_BUFFER_07_025: [BUFFER_u_char shall return a pointer to the underlying unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 422 unsigned char* BUFFER_u_char(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 423 {
AzureIoTClient 10:1be0bc9a9deb 424 BUFFER* handleData = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 425 unsigned char* result;
AzureIoTClient 10:1be0bc9a9deb 426 if (handle == NULL || handleData->size == 0)
Azure.IoT Build 0:fa2de1b79154 427 {
Azure.IoT Build 0:fa2de1b79154 428 /* Codes_SRS_BUFFER_07_026: [BUFFER_u_char shall return NULL for any error that is encountered.] */
AzureIoTClient 10:1be0bc9a9deb 429 /* Codes_SRS_BUFFER_07_029: [BUFFER_u_char shall return NULL if underlying buffer size is zero.] */
Azure.IoT Build 0:fa2de1b79154 430 result = NULL;
Azure.IoT Build 0:fa2de1b79154 431 }
Azure.IoT Build 0:fa2de1b79154 432 else
Azure.IoT Build 0:fa2de1b79154 433 {
AzureIoTClient 10:1be0bc9a9deb 434 result = handleData->buffer;
Azure.IoT Build 0:fa2de1b79154 435 }
Azure.IoT Build 0:fa2de1b79154 436 return result;
Azure.IoT Build 0:fa2de1b79154 437 }
Azure.IoT Build 0:fa2de1b79154 438
Azure.IoT Build 0:fa2de1b79154 439 /* Codes_SRS_BUFFER_07_027: [BUFFER_length shall return the size of the underlying buffer.] */
Azure.IoT Build 0:fa2de1b79154 440 size_t BUFFER_length(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 441 {
Azure.IoT Build 0:fa2de1b79154 442 size_t result;
Azure.IoT Build 0:fa2de1b79154 443 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 444 {
Azure.IoT Build 0:fa2de1b79154 445 /* Codes_SRS_BUFFER_07_028: [BUFFER_length shall return zero for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 446 result = 0;
Azure.IoT Build 0:fa2de1b79154 447 }
Azure.IoT Build 0:fa2de1b79154 448 else
Azure.IoT Build 0:fa2de1b79154 449 {
Azure.IoT Build 0:fa2de1b79154 450 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 451 result = b->size;
Azure.IoT Build 0:fa2de1b79154 452 }
Azure.IoT Build 0:fa2de1b79154 453 return result;
Azure.IoT Build 0:fa2de1b79154 454 }
Azure.IoT Build 0:fa2de1b79154 455
Azure.IoT Build 0:fa2de1b79154 456 BUFFER_HANDLE BUFFER_clone(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 457 {
Azure.IoT Build 0:fa2de1b79154 458 BUFFER_HANDLE result;
Azure.IoT Build 0:fa2de1b79154 459 if (handle == NULL)
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 {
Azure.IoT Build 0:fa2de1b79154 465 BUFFER* suppliedBuff = (BUFFER*)handle;
AzureIoTClient 10:1be0bc9a9deb 466 BUFFER* b = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 467 if (b != NULL)
Azure.IoT Build 0:fa2de1b79154 468 {
AzureIoTClient 10:1be0bc9a9deb 469 if (BUFFER_safemalloc(b, suppliedBuff->size) != 0)
Azure.IoT Build 0:fa2de1b79154 470 {
Azure.IoT Build 0:fa2de1b79154 471 result = NULL;
Azure.IoT Build 0:fa2de1b79154 472 }
Azure.IoT Build 0:fa2de1b79154 473 else
Azure.IoT Build 0:fa2de1b79154 474 {
Azure.IoT Build 0:fa2de1b79154 475 memcpy(b->buffer, suppliedBuff->buffer, suppliedBuff->size);
Azure.IoT Build 0:fa2de1b79154 476 b->size = suppliedBuff->size;
Azure.IoT Build 0:fa2de1b79154 477 result = (BUFFER_HANDLE)b;
Azure.IoT Build 0:fa2de1b79154 478 }
Azure.IoT Build 0:fa2de1b79154 479 }
Azure.IoT Build 0:fa2de1b79154 480 else
Azure.IoT Build 0:fa2de1b79154 481 {
Azure.IoT Build 0:fa2de1b79154 482 result = NULL;
Azure.IoT Build 0:fa2de1b79154 483 }
Azure.IoT Build 0:fa2de1b79154 484 }
Azure.IoT Build 0:fa2de1b79154 485 return result;
Azure.IoT Build 0:fa2de1b79154 486 }