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@19:2e0811512ceb, 2017-01-28 (annotated)

Committer:
AzureIoTClient
Date:
Sat Jan 28 09:35:22 2017 -0800
Revision:
19:2e0811512ceb
Parent:
10:1be0bc9a9deb
Child:
21:b92006c5b9ff
1.1.6

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"
Azure.IoT Build 6:c55b013dfc2a 9 #include "azure_c_shared_utility/xlogging.h"
Azure.IoT Build 0:fa2de1b79154 10
Azure.IoT Build 0:fa2de1b79154 11 typedef struct BUFFER_TAG
Azure.IoT Build 0:fa2de1b79154 12 {
Azure.IoT Build 0:fa2de1b79154 13 unsigned char* buffer;
Azure.IoT Build 0:fa2de1b79154 14 size_t size;
Azure.IoT Build 0:fa2de1b79154 15 }BUFFER;
Azure.IoT Build 0:fa2de1b79154 16
Azure.IoT Build 0:fa2de1b79154 17 /* Codes_SRS_BUFFER_07_001: [BUFFER_new shall allocate a BUFFER_HANDLE that will contain a NULL unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 18 BUFFER_HANDLE BUFFER_new(void)
Azure.IoT Build 0:fa2de1b79154 19 {
Azure.IoT Build 0:fa2de1b79154 20 BUFFER* temp = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 21 /* Codes_SRS_BUFFER_07_002: [BUFFER_new shall return NULL on any error that occurs.] */
Azure.IoT Build 0:fa2de1b79154 22 if (temp != NULL)
Azure.IoT Build 0:fa2de1b79154 23 {
Azure.IoT Build 0:fa2de1b79154 24 temp->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 25 temp->size = 0;
Azure.IoT Build 0:fa2de1b79154 26 }
Azure.IoT Build 0:fa2de1b79154 27 return (BUFFER_HANDLE)temp;
Azure.IoT Build 0:fa2de1b79154 28 }
Azure.IoT Build 0:fa2de1b79154 29
AzureIoTClient 10:1be0bc9a9deb 30 static int BUFFER_safemalloc(BUFFER* handleptr, size_t size)
AzureIoTClient 10:1be0bc9a9deb 31 {
AzureIoTClient 10:1be0bc9a9deb 32 int result;
AzureIoTClient 10:1be0bc9a9deb 33 size_t sizetomalloc = size;
AzureIoTClient 10:1be0bc9a9deb 34 if (size == 0)
AzureIoTClient 10:1be0bc9a9deb 35 {
AzureIoTClient 10:1be0bc9a9deb 36 sizetomalloc = 1;
AzureIoTClient 10:1be0bc9a9deb 37 }
AzureIoTClient 10:1be0bc9a9deb 38 handleptr->buffer = (unsigned char*)malloc(sizetomalloc);
AzureIoTClient 10:1be0bc9a9deb 39 if (handleptr->buffer == NULL)
AzureIoTClient 10:1be0bc9a9deb 40 {
AzureIoTClient 10:1be0bc9a9deb 41 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.]*/
AzureIoTClient 10:1be0bc9a9deb 42 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 43 }
AzureIoTClient 10:1be0bc9a9deb 44 else
AzureIoTClient 10:1be0bc9a9deb 45 {
AzureIoTClient 10:1be0bc9a9deb 46 // we still consider the real buffer size is 0
AzureIoTClient 10:1be0bc9a9deb 47 handleptr->size = size;
AzureIoTClient 10:1be0bc9a9deb 48 result = 0;
AzureIoTClient 10:1be0bc9a9deb 49 }
AzureIoTClient 10:1be0bc9a9deb 50 return result;
AzureIoTClient 10:1be0bc9a9deb 51 }
AzureIoTClient 10:1be0bc9a9deb 52
Azure.IoT Build 0:fa2de1b79154 53 BUFFER_HANDLE BUFFER_create(const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 54 {
Azure.IoT Build 0:fa2de1b79154 55 BUFFER* result;
Azure.IoT Build 0:fa2de1b79154 56 /*Codes_SRS_BUFFER_02_001: [If source is NULL then BUFFER_create shall return NULL.]*/
Azure.IoT Build 0:fa2de1b79154 57 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 58 {
Azure.IoT Build 0:fa2de1b79154 59 result = NULL;
Azure.IoT Build 0:fa2de1b79154 60 }
Azure.IoT Build 0:fa2de1b79154 61 else
Azure.IoT Build 0:fa2de1b79154 62 {
Azure.IoT Build 0:fa2de1b79154 63 /*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 64 result = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 65 if (result == NULL)
Azure.IoT Build 0:fa2de1b79154 66 {
Azure.IoT Build 0:fa2de1b79154 67 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.] */
Azure.IoT Build 0:fa2de1b79154 68 /*fallthrough*/
Azure.IoT Build 0:fa2de1b79154 69 }
Azure.IoT Build 0:fa2de1b79154 70 else
Azure.IoT Build 0:fa2de1b79154 71 {
AzureIoTClient 10:1be0bc9a9deb 72 /* 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 73 if (BUFFER_safemalloc(result, size) != 0)
Azure.IoT Build 0:fa2de1b79154 74 {
AzureIoTClient 10:1be0bc9a9deb 75 LogError("unable to BUFFER_safemalloc ");
Azure.IoT Build 0:fa2de1b79154 76 free(result);
Azure.IoT Build 0:fa2de1b79154 77 result = NULL;
Azure.IoT Build 0:fa2de1b79154 78 }
Azure.IoT Build 0:fa2de1b79154 79 else
Azure.IoT Build 0:fa2de1b79154 80 {
Azure.IoT Build 0:fa2de1b79154 81 /*Codes_SRS_BUFFER_02_004: [Otherwise, BUFFER_create shall return a non-NULL handle.] */
AzureIoTClient 19:2e0811512ceb 82 (void)memcpy(result->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 83 }
Azure.IoT Build 0:fa2de1b79154 84 }
Azure.IoT Build 0:fa2de1b79154 85 }
Azure.IoT Build 0:fa2de1b79154 86 return (BUFFER_HANDLE)result;
Azure.IoT Build 0:fa2de1b79154 87 }
Azure.IoT Build 0:fa2de1b79154 88
Azure.IoT Build 0:fa2de1b79154 89 /* 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 90 void BUFFER_delete(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 91 {
Azure.IoT Build 0:fa2de1b79154 92 /* Codes_SRS_BUFFER_07_004: [BUFFER_delete shall not delete any BUFFER_HANDLE that is NULL.] */
Azure.IoT Build 0:fa2de1b79154 93 if (handle != NULL)
Azure.IoT Build 0:fa2de1b79154 94 {
Azure.IoT Build 0:fa2de1b79154 95 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 96 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 97 {
Azure.IoT Build 0:fa2de1b79154 98 /* 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 99 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 100 }
Azure.IoT Build 0:fa2de1b79154 101 free(b);
Azure.IoT Build 0:fa2de1b79154 102 }
Azure.IoT Build 0:fa2de1b79154 103 }
Azure.IoT Build 0:fa2de1b79154 104
Azure.IoT Build 0:fa2de1b79154 105 /*return 0 if the buffer was copied*/
Azure.IoT Build 0:fa2de1b79154 106 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 107 /* 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 108 int BUFFER_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 109 {
Azure.IoT Build 0:fa2de1b79154 110 int result;
Azure.IoT Build 0:fa2de1b79154 111 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 112 {
Azure.IoT Build 0:fa2de1b79154 113 /* Codes_SRS_BUFFER_07_009: [BUFFER_build shall return nonzero if handle is NULL ] */
Azure.IoT Build 0:fa2de1b79154 114 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 115 }
Azure.IoT Build 0:fa2de1b79154 116 /* 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 117 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 118 {
Azure.IoT Build 0:fa2de1b79154 119 /* Codes_SRS_BUFFER_01_003: [If size is zero, source can be NULL.] */
Azure.IoT Build 0:fa2de1b79154 120 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 121 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 122 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 123 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 124
Azure.IoT Build 0:fa2de1b79154 125 result = 0;
Azure.IoT Build 0:fa2de1b79154 126 }
Azure.IoT Build 0:fa2de1b79154 127 else
Azure.IoT Build 0:fa2de1b79154 128 {
Azure.IoT Build 0:fa2de1b79154 129 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 130 {
Azure.IoT Build 0:fa2de1b79154 131 /* Codes_SRS_BUFFER_01_001: [If size is positive and source is NULL, BUFFER_build shall return nonzero] */
Azure.IoT Build 0:fa2de1b79154 132 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 133 }
Azure.IoT Build 0:fa2de1b79154 134 else
Azure.IoT Build 0:fa2de1b79154 135 {
Azure.IoT Build 0:fa2de1b79154 136 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 137 /* Codes_SRS_BUFFER_07_011: [BUFFER_build shall overwrite previous contents if the buffer has been previously allocated.] */
Azure.IoT Build 0:fa2de1b79154 138 unsigned char* newBuffer = (unsigned char*)realloc(b->buffer, size);
Azure.IoT Build 0:fa2de1b79154 139 if (newBuffer == NULL)
Azure.IoT Build 0:fa2de1b79154 140 {
Azure.IoT Build 0:fa2de1b79154 141 /* Codes_SRS_BUFFER_07_010: [BUFFER_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 142 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 143 }
Azure.IoT Build 0:fa2de1b79154 144 else
Azure.IoT Build 0:fa2de1b79154 145 {
Azure.IoT Build 0:fa2de1b79154 146 b->buffer = newBuffer;
Azure.IoT Build 0:fa2de1b79154 147 b->size = size;
Azure.IoT Build 0:fa2de1b79154 148 /* 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 149 (void)memcpy(b->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 150
Azure.IoT Build 0:fa2de1b79154 151 result = 0;
Azure.IoT Build 0:fa2de1b79154 152 }
Azure.IoT Build 0:fa2de1b79154 153 }
Azure.IoT Build 0:fa2de1b79154 154 }
Azure.IoT Build 0:fa2de1b79154 155
Azure.IoT Build 0:fa2de1b79154 156 return result;
Azure.IoT Build 0:fa2de1b79154 157 }
Azure.IoT Build 0:fa2de1b79154 158
Azure.IoT Build 0:fa2de1b79154 159 /*return 0 if the buffer was pre-build(that is, had its space allocated)*/
Azure.IoT Build 0:fa2de1b79154 160 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 161 /* 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 162 int BUFFER_pre_build(BUFFER_HANDLE handle, size_t size)
Azure.IoT Build 0:fa2de1b79154 163 {
Azure.IoT Build 0:fa2de1b79154 164 int result;
Azure.IoT Build 0:fa2de1b79154 165 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 166 {
Azure.IoT Build 0:fa2de1b79154 167 /* 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 168 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 169 }
Azure.IoT Build 0:fa2de1b79154 170 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 171 {
Azure.IoT Build 0:fa2de1b79154 172 /* 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 173 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 174 }
Azure.IoT Build 0:fa2de1b79154 175 else
Azure.IoT Build 0:fa2de1b79154 176 {
Azure.IoT Build 0:fa2de1b79154 177 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 178 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 179 {
Azure.IoT Build 0:fa2de1b79154 180 /* 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 181 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 182 }
Azure.IoT Build 0:fa2de1b79154 183 else
Azure.IoT Build 0:fa2de1b79154 184 {
Azure.IoT Build 0:fa2de1b79154 185 if ((b->buffer = (unsigned char*)malloc(size)) == NULL)
Azure.IoT Build 0:fa2de1b79154 186 {
Azure.IoT Build 0:fa2de1b79154 187 /* Codes_SRS_BUFFER_07_013: [BUFFER_pre_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 188 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 189 }
Azure.IoT Build 0:fa2de1b79154 190 else
Azure.IoT Build 0:fa2de1b79154 191 {
Azure.IoT Build 0:fa2de1b79154 192 b->size = size;
Azure.IoT Build 0:fa2de1b79154 193 result = 0;
Azure.IoT Build 0:fa2de1b79154 194 }
Azure.IoT Build 0:fa2de1b79154 195 }
Azure.IoT Build 0:fa2de1b79154 196 }
Azure.IoT Build 0:fa2de1b79154 197 return result;
Azure.IoT Build 0:fa2de1b79154 198 }
Azure.IoT Build 0:fa2de1b79154 199
Azure.IoT Build 0:fa2de1b79154 200 /* Codes_SRS_BUFFER_07_019: [BUFFER_content shall return the data contained within the BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 201 int BUFFER_content(BUFFER_HANDLE handle, const unsigned char** content)
Azure.IoT Build 0:fa2de1b79154 202 {
Azure.IoT Build 0:fa2de1b79154 203 int result;
Azure.IoT Build 0:fa2de1b79154 204 if ((handle == NULL) || (content == NULL))
Azure.IoT Build 0:fa2de1b79154 205 {
Azure.IoT Build 0:fa2de1b79154 206 /* Codes_SRS_BUFFER_07_020: [If the handle and/or content*is NULL BUFFER_content shall return nonzero.] */
Azure.IoT Build 0:fa2de1b79154 207 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 208 }
Azure.IoT Build 0:fa2de1b79154 209 else
Azure.IoT Build 0:fa2de1b79154 210 {
Azure.IoT Build 0:fa2de1b79154 211 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 212 *content = b->buffer;
Azure.IoT Build 0:fa2de1b79154 213 result = 0;
Azure.IoT Build 0:fa2de1b79154 214 }
Azure.IoT Build 0:fa2de1b79154 215 return result;
Azure.IoT Build 0:fa2de1b79154 216 }
Azure.IoT Build 0:fa2de1b79154 217
Azure.IoT Build 0:fa2de1b79154 218 /*return 0 if everything went ok and whatever was built in the buffer was unbuilt*/
Azure.IoT Build 0:fa2de1b79154 219 /* 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 220 extern int BUFFER_unbuild(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 221 {
Azure.IoT Build 0:fa2de1b79154 222 int result;
Azure.IoT Build 0:fa2de1b79154 223 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 224 {
Azure.IoT Build 0:fa2de1b79154 225 /* Codes_SRS_BUFFER_07_014: [BUFFER_unbuild shall return a nonzero value if BUFFER_HANDLE is NULL.] */
Azure.IoT Build 0:fa2de1b79154 226 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 227 }
Azure.IoT Build 0:fa2de1b79154 228 else
Azure.IoT Build 0:fa2de1b79154 229 {
Azure.IoT Build 0:fa2de1b79154 230 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 231 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 232 {
Azure.IoT Build 0:fa2de1b79154 233 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 234 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 235 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 236 result = 0;
Azure.IoT Build 0:fa2de1b79154 237 }
Azure.IoT Build 0:fa2de1b79154 238 else
Azure.IoT Build 0:fa2de1b79154 239 {
Azure.IoT Build 0:fa2de1b79154 240 /* 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 241 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 242 }
Azure.IoT Build 0:fa2de1b79154 243 }
Azure.IoT Build 0:fa2de1b79154 244 return result;
Azure.IoT Build 0:fa2de1b79154 245 }
Azure.IoT Build 0:fa2de1b79154 246
Azure.IoT Build 0:fa2de1b79154 247 /* Codes_SRS_BUFFER_07_016: [BUFFER_enlarge shall increase the size of the unsigned char* referenced by BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 248 int BUFFER_enlarge(BUFFER_HANDLE handle, size_t enlargeSize)
Azure.IoT Build 0:fa2de1b79154 249 {
Azure.IoT Build 0:fa2de1b79154 250 int result;
Azure.IoT Build 0:fa2de1b79154 251 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 252 {
Azure.IoT Build 0:fa2de1b79154 253 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 254 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 255 }
Azure.IoT Build 0:fa2de1b79154 256 else if (enlargeSize == 0)
Azure.IoT Build 0:fa2de1b79154 257 {
Azure.IoT Build 0:fa2de1b79154 258 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 259 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 260 }
Azure.IoT Build 0:fa2de1b79154 261 else
Azure.IoT Build 0:fa2de1b79154 262 {
Azure.IoT Build 0:fa2de1b79154 263 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 264 unsigned char* temp = (unsigned char*)realloc(b->buffer, b->size + enlargeSize);
Azure.IoT Build 0:fa2de1b79154 265 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 266 {
Azure.IoT Build 0:fa2de1b79154 267 /* Codes_SRS_BUFFER_07_018: [BUFFER_enlarge shall return a nonzero result if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 268 result = __LINE__;
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 b->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 273 b->size += enlargeSize;
Azure.IoT Build 0:fa2de1b79154 274 result = 0;
Azure.IoT Build 0:fa2de1b79154 275 }
Azure.IoT Build 0:fa2de1b79154 276 }
Azure.IoT Build 0:fa2de1b79154 277 return result;
Azure.IoT Build 0:fa2de1b79154 278 }
Azure.IoT Build 0:fa2de1b79154 279
Azure.IoT Build 0:fa2de1b79154 280 /* 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 281 int BUFFER_size(BUFFER_HANDLE handle, size_t* size)
Azure.IoT Build 0:fa2de1b79154 282 {
Azure.IoT Build 0:fa2de1b79154 283 int result;
Azure.IoT Build 0:fa2de1b79154 284 if ((handle == NULL) || (size == NULL))
Azure.IoT Build 0:fa2de1b79154 285 {
Azure.IoT Build 0:fa2de1b79154 286 /* Codes_SRS_BUFFER_07_022: [BUFFER_size shall return a nonzero value for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 287 result = __LINE__;
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 *size = b->size;
Azure.IoT Build 0:fa2de1b79154 293 result = 0;
Azure.IoT Build 0:fa2de1b79154 294 }
Azure.IoT Build 0:fa2de1b79154 295 return result;
Azure.IoT Build 0:fa2de1b79154 296 }
Azure.IoT Build 0:fa2de1b79154 297
Azure.IoT Build 0:fa2de1b79154 298 /* 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 299 int BUFFER_append(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 300 {
Azure.IoT Build 0:fa2de1b79154 301 int result;
Azure.IoT Build 0:fa2de1b79154 302 if ( (handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2) )
Azure.IoT Build 0:fa2de1b79154 303 {
Azure.IoT Build 0:fa2de1b79154 304 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 305 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 306 }
Azure.IoT Build 0:fa2de1b79154 307 else
Azure.IoT Build 0:fa2de1b79154 308 {
Azure.IoT Build 0:fa2de1b79154 309 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 310 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 311 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 312 {
Azure.IoT Build 0:fa2de1b79154 313 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 314 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 315 }
Azure.IoT Build 0:fa2de1b79154 316 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 317 {
Azure.IoT Build 0:fa2de1b79154 318 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 319 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 320 }
Azure.IoT Build 0:fa2de1b79154 321 else
Azure.IoT Build 0:fa2de1b79154 322 {
AzureIoTClient 10:1be0bc9a9deb 323 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 324 {
AzureIoTClient 10:1be0bc9a9deb 325 // b2->size = 0, whatever b1->size is, do nothing
AzureIoTClient 10:1be0bc9a9deb 326 result = 0;
Azure.IoT Build 0:fa2de1b79154 327 }
Azure.IoT Build 0:fa2de1b79154 328 else
Azure.IoT Build 0:fa2de1b79154 329 {
AzureIoTClient 10:1be0bc9a9deb 330 // b2->size != 0, whatever b1->size is
AzureIoTClient 10:1be0bc9a9deb 331 unsigned char* temp = (unsigned char*)realloc(b1->buffer, b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 332 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 333 {
AzureIoTClient 10:1be0bc9a9deb 334 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
AzureIoTClient 10:1be0bc9a9deb 335 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 336 }
AzureIoTClient 10:1be0bc9a9deb 337 else
AzureIoTClient 10:1be0bc9a9deb 338 {
AzureIoTClient 10:1be0bc9a9deb 339 /* Codes_SRS_BUFFER_07_024: [BUFFER_append concatenates b2 onto b1 without modifying b2 and shall return zero on success.]*/
AzureIoTClient 10:1be0bc9a9deb 340 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 341 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 342 (void)memcpy(&b1->buffer[b1->size], b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 343 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 344 result = 0;
AzureIoTClient 10:1be0bc9a9deb 345 }
Azure.IoT Build 0:fa2de1b79154 346 }
Azure.IoT Build 0:fa2de1b79154 347 }
Azure.IoT Build 0:fa2de1b79154 348 }
Azure.IoT Build 0:fa2de1b79154 349 return result;
Azure.IoT Build 0:fa2de1b79154 350 }
Azure.IoT Build 0:fa2de1b79154 351
Azure.IoT Build 0:fa2de1b79154 352 int BUFFER_prepend(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 353 {
Azure.IoT Build 0:fa2de1b79154 354 int result;
Azure.IoT Build 0:fa2de1b79154 355 if ((handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2))
Azure.IoT Build 0:fa2de1b79154 356 {
AzureIoTClient 10:1be0bc9a9deb 357 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 358 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 359 }
Azure.IoT Build 0:fa2de1b79154 360 else
Azure.IoT Build 0:fa2de1b79154 361 {
Azure.IoT Build 0:fa2de1b79154 362 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 363 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 364 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 365 {
AzureIoTClient 10:1be0bc9a9deb 366 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 367 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 368 }
Azure.IoT Build 0:fa2de1b79154 369 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 370 {
AzureIoTClient 10:1be0bc9a9deb 371 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
Azure.IoT Build 0:fa2de1b79154 372 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 373 }
Azure.IoT Build 0:fa2de1b79154 374 else
Azure.IoT Build 0:fa2de1b79154 375 {
AzureIoTClient 10:1be0bc9a9deb 376 //put b2 ahead of b1: [b2][b1], return b1
AzureIoTClient 10:1be0bc9a9deb 377 if (b2->size ==0)
Azure.IoT Build 0:fa2de1b79154 378 {
AzureIoTClient 10:1be0bc9a9deb 379 // do nothing
AzureIoTClient 10:1be0bc9a9deb 380 result = 0;
Azure.IoT Build 0:fa2de1b79154 381 }
Azure.IoT Build 0:fa2de1b79154 382 else
Azure.IoT Build 0:fa2de1b79154 383 {
AzureIoTClient 10:1be0bc9a9deb 384 // b2->size != 0
AzureIoTClient 10:1be0bc9a9deb 385 unsigned char* temp = (unsigned char*)malloc(b1->size + b2->size);
AzureIoTClient 10:1be0bc9a9deb 386 if (temp == NULL)
AzureIoTClient 10:1be0bc9a9deb 387 {
AzureIoTClient 10:1be0bc9a9deb 388 /* Codes_SRS_BUFFER_01_005: [ BUFFER_prepend shall return a non-zero upon value any error that is encountered. ]*/
AzureIoTClient 10:1be0bc9a9deb 389 result = __LINE__;
AzureIoTClient 10:1be0bc9a9deb 390 }
AzureIoTClient 10:1be0bc9a9deb 391 else
AzureIoTClient 10:1be0bc9a9deb 392 {
AzureIoTClient 10:1be0bc9a9deb 393 /* Codes_SRS_BUFFER_01_004: [ BUFFER_prepend concatenates handle1 onto handle2 without modifying handle1 and shall return zero on success. ]*/
AzureIoTClient 10:1be0bc9a9deb 394 // Append the BUFFER
AzureIoTClient 10:1be0bc9a9deb 395 (void)memcpy(temp, b2->buffer, b2->size);
AzureIoTClient 10:1be0bc9a9deb 396 // start from b1->size to append b1
AzureIoTClient 10:1be0bc9a9deb 397 (void)memcpy(&temp[b2->size], b1->buffer, b1->size);
AzureIoTClient 10:1be0bc9a9deb 398 free(b1->buffer);
AzureIoTClient 10:1be0bc9a9deb 399 b1->buffer = temp;
AzureIoTClient 10:1be0bc9a9deb 400 b1->size += b2->size;
AzureIoTClient 10:1be0bc9a9deb 401 result = 0;
AzureIoTClient 10:1be0bc9a9deb 402 }
Azure.IoT Build 0:fa2de1b79154 403 }
Azure.IoT Build 0:fa2de1b79154 404 }
Azure.IoT Build 0:fa2de1b79154 405 }
Azure.IoT Build 0:fa2de1b79154 406 return result;
Azure.IoT Build 0:fa2de1b79154 407 }
Azure.IoT Build 0:fa2de1b79154 408
Azure.IoT Build 0:fa2de1b79154 409
Azure.IoT Build 0:fa2de1b79154 410 /* Codes_SRS_BUFFER_07_025: [BUFFER_u_char shall return a pointer to the underlying unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 411 unsigned char* BUFFER_u_char(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 412 {
AzureIoTClient 10:1be0bc9a9deb 413 BUFFER* handleData = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 414 unsigned char* result;
AzureIoTClient 10:1be0bc9a9deb 415 if (handle == NULL || handleData->size == 0)
Azure.IoT Build 0:fa2de1b79154 416 {
Azure.IoT Build 0:fa2de1b79154 417 /* Codes_SRS_BUFFER_07_026: [BUFFER_u_char shall return NULL for any error that is encountered.] */
AzureIoTClient 10:1be0bc9a9deb 418 /* Codes_SRS_BUFFER_07_029: [BUFFER_u_char shall return NULL if underlying buffer size is zero.] */
Azure.IoT Build 0:fa2de1b79154 419 result = NULL;
Azure.IoT Build 0:fa2de1b79154 420 }
Azure.IoT Build 0:fa2de1b79154 421 else
Azure.IoT Build 0:fa2de1b79154 422 {
AzureIoTClient 10:1be0bc9a9deb 423 result = handleData->buffer;
Azure.IoT Build 0:fa2de1b79154 424 }
Azure.IoT Build 0:fa2de1b79154 425 return result;
Azure.IoT Build 0:fa2de1b79154 426 }
Azure.IoT Build 0:fa2de1b79154 427
Azure.IoT Build 0:fa2de1b79154 428 /* Codes_SRS_BUFFER_07_027: [BUFFER_length shall return the size of the underlying buffer.] */
Azure.IoT Build 0:fa2de1b79154 429 size_t BUFFER_length(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 430 {
Azure.IoT Build 0:fa2de1b79154 431 size_t result;
Azure.IoT Build 0:fa2de1b79154 432 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 433 {
Azure.IoT Build 0:fa2de1b79154 434 /* Codes_SRS_BUFFER_07_028: [BUFFER_length shall return zero for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 435 result = 0;
Azure.IoT Build 0:fa2de1b79154 436 }
Azure.IoT Build 0:fa2de1b79154 437 else
Azure.IoT Build 0:fa2de1b79154 438 {
Azure.IoT Build 0:fa2de1b79154 439 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 440 result = b->size;
Azure.IoT Build 0:fa2de1b79154 441 }
Azure.IoT Build 0:fa2de1b79154 442 return result;
Azure.IoT Build 0:fa2de1b79154 443 }
Azure.IoT Build 0:fa2de1b79154 444
Azure.IoT Build 0:fa2de1b79154 445 BUFFER_HANDLE BUFFER_clone(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 446 {
Azure.IoT Build 0:fa2de1b79154 447 BUFFER_HANDLE result;
Azure.IoT Build 0:fa2de1b79154 448 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 449 {
Azure.IoT Build 0:fa2de1b79154 450 result = NULL;
Azure.IoT Build 0:fa2de1b79154 451 }
Azure.IoT Build 0:fa2de1b79154 452 else
Azure.IoT Build 0:fa2de1b79154 453 {
Azure.IoT Build 0:fa2de1b79154 454 BUFFER* suppliedBuff = (BUFFER*)handle;
AzureIoTClient 10:1be0bc9a9deb 455 BUFFER* b = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 456 if (b != NULL)
Azure.IoT Build 0:fa2de1b79154 457 {
AzureIoTClient 10:1be0bc9a9deb 458 if (BUFFER_safemalloc(b, suppliedBuff->size) != 0)
Azure.IoT Build 0:fa2de1b79154 459 {
Azure.IoT Build 0:fa2de1b79154 460 result = NULL;
Azure.IoT Build 0:fa2de1b79154 461 }
Azure.IoT Build 0:fa2de1b79154 462 else
Azure.IoT Build 0:fa2de1b79154 463 {
AzureIoTClient 19:2e0811512ceb 464 (void)memcpy(b->buffer, suppliedBuff->buffer, suppliedBuff->size);
Azure.IoT Build 0:fa2de1b79154 465 b->size = suppliedBuff->size;
Azure.IoT Build 0:fa2de1b79154 466 result = (BUFFER_HANDLE)b;
Azure.IoT Build 0:fa2de1b79154 467 }
Azure.IoT Build 0:fa2de1b79154 468 }
Azure.IoT Build 0:fa2de1b79154 469 else
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 }
Azure.IoT Build 0:fa2de1b79154 474 return result;
Azure.IoT Build 0:fa2de1b79154 475 }