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@6:c55b013dfc2a, 2016-07-01 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Jul 01 10:43:23 2016 -0700
Revision:
6:c55b013dfc2a
Parent:
0:fa2de1b79154
Child:
10:1be0bc9a9deb
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
Azure.IoT Build 0:fa2de1b79154 41 BUFFER_HANDLE BUFFER_create(const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 42 {
Azure.IoT Build 0:fa2de1b79154 43 BUFFER* result;
Azure.IoT Build 0:fa2de1b79154 44 /*Codes_SRS_BUFFER_02_001: [If source is NULL then BUFFER_create shall return NULL.]*/
Azure.IoT Build 0:fa2de1b79154 45 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 46 {
Azure.IoT Build 0:fa2de1b79154 47 result = NULL;
Azure.IoT Build 0:fa2de1b79154 48 }
Azure.IoT Build 0:fa2de1b79154 49 else
Azure.IoT Build 0:fa2de1b79154 50 {
Azure.IoT Build 0:fa2de1b79154 51 /*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 52 result = (BUFFER*)malloc(sizeof(BUFFER));
Azure.IoT Build 0:fa2de1b79154 53 if (result == NULL)
Azure.IoT Build 0:fa2de1b79154 54 {
Azure.IoT Build 0:fa2de1b79154 55 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.] */
Azure.IoT Build 0:fa2de1b79154 56 /*fallthrough*/
Azure.IoT Build 0:fa2de1b79154 57 }
Azure.IoT Build 0:fa2de1b79154 58 else
Azure.IoT Build 0:fa2de1b79154 59 {
Azure.IoT Build 0:fa2de1b79154 60 result->buffer = (unsigned char*)malloc(size);
Azure.IoT Build 0:fa2de1b79154 61 if (result->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 62 {
Azure.IoT Build 0:fa2de1b79154 63 /*Codes_SRS_BUFFER_02_003: [If allocating memory fails, then BUFFER_create shall return NULL.]*/
Azure.IoT Build 0:fa2de1b79154 64 free(result);
Azure.IoT Build 0:fa2de1b79154 65 result = NULL;
Azure.IoT Build 0:fa2de1b79154 66 }
Azure.IoT Build 0:fa2de1b79154 67 else
Azure.IoT Build 0:fa2de1b79154 68 {
Azure.IoT Build 0:fa2de1b79154 69 /*Codes_SRS_BUFFER_02_004: [Otherwise, BUFFER_create shall return a non-NULL handle.] */
Azure.IoT Build 0:fa2de1b79154 70 memcpy(result->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 71 result->size = size;
Azure.IoT Build 0:fa2de1b79154 72 }
Azure.IoT Build 0:fa2de1b79154 73 }
Azure.IoT Build 0:fa2de1b79154 74 }
Azure.IoT Build 0:fa2de1b79154 75 return (BUFFER_HANDLE)result;
Azure.IoT Build 0:fa2de1b79154 76 }
Azure.IoT Build 0:fa2de1b79154 77
Azure.IoT Build 0:fa2de1b79154 78 /* 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 79 void BUFFER_delete(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 80 {
Azure.IoT Build 0:fa2de1b79154 81 /* Codes_SRS_BUFFER_07_004: [BUFFER_delete shall not delete any BUFFER_HANDLE that is NULL.] */
Azure.IoT Build 0:fa2de1b79154 82 if (handle != NULL)
Azure.IoT Build 0:fa2de1b79154 83 {
Azure.IoT Build 0:fa2de1b79154 84 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 85 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 86 {
Azure.IoT Build 0:fa2de1b79154 87 /* 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 88 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 89 }
Azure.IoT Build 0:fa2de1b79154 90 free(b);
Azure.IoT Build 0:fa2de1b79154 91 }
Azure.IoT Build 0:fa2de1b79154 92 }
Azure.IoT Build 0:fa2de1b79154 93
Azure.IoT Build 0:fa2de1b79154 94 /*return 0 if the buffer was copied*/
Azure.IoT Build 0:fa2de1b79154 95 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 96 /* 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 97 int BUFFER_build(BUFFER_HANDLE handle, const unsigned char* source, size_t size)
Azure.IoT Build 0:fa2de1b79154 98 {
Azure.IoT Build 0:fa2de1b79154 99 int result;
Azure.IoT Build 0:fa2de1b79154 100 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 101 {
Azure.IoT Build 0:fa2de1b79154 102 /* Codes_SRS_BUFFER_07_009: [BUFFER_build shall return nonzero if handle is NULL ] */
Azure.IoT Build 0:fa2de1b79154 103 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 104 }
Azure.IoT Build 0:fa2de1b79154 105 /* 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 106 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 107 {
Azure.IoT Build 0:fa2de1b79154 108 /* Codes_SRS_BUFFER_01_003: [If size is zero, source can be NULL.] */
Azure.IoT Build 0:fa2de1b79154 109 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 110 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 111 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 112 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 113
Azure.IoT Build 0:fa2de1b79154 114 result = 0;
Azure.IoT Build 0:fa2de1b79154 115 }
Azure.IoT Build 0:fa2de1b79154 116 else
Azure.IoT Build 0:fa2de1b79154 117 {
Azure.IoT Build 0:fa2de1b79154 118 if (source == NULL)
Azure.IoT Build 0:fa2de1b79154 119 {
Azure.IoT Build 0:fa2de1b79154 120 /* Codes_SRS_BUFFER_01_001: [If size is positive and source is NULL, BUFFER_build shall return nonzero] */
Azure.IoT Build 0:fa2de1b79154 121 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 122 }
Azure.IoT Build 0:fa2de1b79154 123 else
Azure.IoT Build 0:fa2de1b79154 124 {
Azure.IoT Build 0:fa2de1b79154 125 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 126 /* Codes_SRS_BUFFER_07_011: [BUFFER_build shall overwrite previous contents if the buffer has been previously allocated.] */
Azure.IoT Build 0:fa2de1b79154 127 unsigned char* newBuffer = (unsigned char*)realloc(b->buffer, size);
Azure.IoT Build 0:fa2de1b79154 128 if (newBuffer == NULL)
Azure.IoT Build 0:fa2de1b79154 129 {
Azure.IoT Build 0:fa2de1b79154 130 /* Codes_SRS_BUFFER_07_010: [BUFFER_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 131 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 132 }
Azure.IoT Build 0:fa2de1b79154 133 else
Azure.IoT Build 0:fa2de1b79154 134 {
Azure.IoT Build 0:fa2de1b79154 135 b->buffer = newBuffer;
Azure.IoT Build 0:fa2de1b79154 136 b->size = size;
Azure.IoT Build 0:fa2de1b79154 137 /* 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 138 (void)memcpy(b->buffer, source, size);
Azure.IoT Build 0:fa2de1b79154 139
Azure.IoT Build 0:fa2de1b79154 140 result = 0;
Azure.IoT Build 0:fa2de1b79154 141 }
Azure.IoT Build 0:fa2de1b79154 142 }
Azure.IoT Build 0:fa2de1b79154 143 }
Azure.IoT Build 0:fa2de1b79154 144
Azure.IoT Build 0:fa2de1b79154 145 return result;
Azure.IoT Build 0:fa2de1b79154 146 }
Azure.IoT Build 0:fa2de1b79154 147
Azure.IoT Build 0:fa2de1b79154 148 /*return 0 if the buffer was pre-build(that is, had its space allocated)*/
Azure.IoT Build 0:fa2de1b79154 149 /*else return different than zero*/
Azure.IoT Build 0:fa2de1b79154 150 /* 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 151 int BUFFER_pre_build(BUFFER_HANDLE handle, size_t size)
Azure.IoT Build 0:fa2de1b79154 152 {
Azure.IoT Build 0:fa2de1b79154 153 int result;
Azure.IoT Build 0:fa2de1b79154 154 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 155 {
Azure.IoT Build 0:fa2de1b79154 156 /* 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 157 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 158 }
Azure.IoT Build 0:fa2de1b79154 159 else if (size == 0)
Azure.IoT Build 0:fa2de1b79154 160 {
Azure.IoT Build 0:fa2de1b79154 161 /* 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 162 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 163 }
Azure.IoT Build 0:fa2de1b79154 164 else
Azure.IoT Build 0:fa2de1b79154 165 {
Azure.IoT Build 0:fa2de1b79154 166 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 167 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 168 {
Azure.IoT Build 0:fa2de1b79154 169 /* 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 170 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 171 }
Azure.IoT Build 0:fa2de1b79154 172 else
Azure.IoT Build 0:fa2de1b79154 173 {
Azure.IoT Build 0:fa2de1b79154 174 if ((b->buffer = (unsigned char*)malloc(size)) == NULL)
Azure.IoT Build 0:fa2de1b79154 175 {
Azure.IoT Build 0:fa2de1b79154 176 /* Codes_SRS_BUFFER_07_013: [BUFFER_pre_build shall return nonzero if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 177 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 178 }
Azure.IoT Build 0:fa2de1b79154 179 else
Azure.IoT Build 0:fa2de1b79154 180 {
Azure.IoT Build 0:fa2de1b79154 181 b->size = size;
Azure.IoT Build 0:fa2de1b79154 182 result = 0;
Azure.IoT Build 0:fa2de1b79154 183 }
Azure.IoT Build 0:fa2de1b79154 184 }
Azure.IoT Build 0:fa2de1b79154 185 }
Azure.IoT Build 0:fa2de1b79154 186 return result;
Azure.IoT Build 0:fa2de1b79154 187 }
Azure.IoT Build 0:fa2de1b79154 188
Azure.IoT Build 0:fa2de1b79154 189 /* Codes_SRS_BUFFER_07_019: [BUFFER_content shall return the data contained within the BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 190 int BUFFER_content(BUFFER_HANDLE handle, const unsigned char** content)
Azure.IoT Build 0:fa2de1b79154 191 {
Azure.IoT Build 0:fa2de1b79154 192 int result;
Azure.IoT Build 0:fa2de1b79154 193 if ((handle == NULL) || (content == NULL))
Azure.IoT Build 0:fa2de1b79154 194 {
Azure.IoT Build 0:fa2de1b79154 195 /* Codes_SRS_BUFFER_07_020: [If the handle and/or content*is NULL BUFFER_content shall return nonzero.] */
Azure.IoT Build 0:fa2de1b79154 196 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 197 }
Azure.IoT Build 0:fa2de1b79154 198 else
Azure.IoT Build 0:fa2de1b79154 199 {
Azure.IoT Build 0:fa2de1b79154 200 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 201 *content = b->buffer;
Azure.IoT Build 0:fa2de1b79154 202 result = 0;
Azure.IoT Build 0:fa2de1b79154 203 }
Azure.IoT Build 0:fa2de1b79154 204 return result;
Azure.IoT Build 0:fa2de1b79154 205 }
Azure.IoT Build 0:fa2de1b79154 206
Azure.IoT Build 0:fa2de1b79154 207 /*return 0 if everything went ok and whatever was built in the buffer was unbuilt*/
Azure.IoT Build 0:fa2de1b79154 208 /* 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 209 extern int BUFFER_unbuild(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 210 {
Azure.IoT Build 0:fa2de1b79154 211 int result;
Azure.IoT Build 0:fa2de1b79154 212 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 213 {
Azure.IoT Build 0:fa2de1b79154 214 /* Codes_SRS_BUFFER_07_014: [BUFFER_unbuild shall return a nonzero value if BUFFER_HANDLE is NULL.] */
Azure.IoT Build 0:fa2de1b79154 215 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 216 }
Azure.IoT Build 0:fa2de1b79154 217 else
Azure.IoT Build 0:fa2de1b79154 218 {
Azure.IoT Build 0:fa2de1b79154 219 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 220 if (b->buffer != NULL)
Azure.IoT Build 0:fa2de1b79154 221 {
Azure.IoT Build 0:fa2de1b79154 222 free(b->buffer);
Azure.IoT Build 0:fa2de1b79154 223 b->buffer = NULL;
Azure.IoT Build 0:fa2de1b79154 224 b->size = 0;
Azure.IoT Build 0:fa2de1b79154 225 result = 0;
Azure.IoT Build 0:fa2de1b79154 226 }
Azure.IoT Build 0:fa2de1b79154 227 else
Azure.IoT Build 0:fa2de1b79154 228 {
Azure.IoT Build 0:fa2de1b79154 229 /* 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 230 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 231 }
Azure.IoT Build 0:fa2de1b79154 232 }
Azure.IoT Build 0:fa2de1b79154 233 return result;
Azure.IoT Build 0:fa2de1b79154 234 }
Azure.IoT Build 0:fa2de1b79154 235
Azure.IoT Build 0:fa2de1b79154 236 /* Codes_SRS_BUFFER_07_016: [BUFFER_enlarge shall increase the size of the unsigned char* referenced by BUFFER_HANDLE.] */
Azure.IoT Build 0:fa2de1b79154 237 int BUFFER_enlarge(BUFFER_HANDLE handle, size_t enlargeSize)
Azure.IoT Build 0:fa2de1b79154 238 {
Azure.IoT Build 0:fa2de1b79154 239 int result;
Azure.IoT Build 0:fa2de1b79154 240 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 241 {
Azure.IoT Build 0:fa2de1b79154 242 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 243 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 244 }
Azure.IoT Build 0:fa2de1b79154 245 else if (enlargeSize == 0)
Azure.IoT Build 0:fa2de1b79154 246 {
Azure.IoT Build 0:fa2de1b79154 247 /* Codes_SRS_BUFFER_07_017: [BUFFER_enlarge shall return a nonzero result if any parameters are NULL or zero.] */
Azure.IoT Build 0:fa2de1b79154 248 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 249 }
Azure.IoT Build 0:fa2de1b79154 250 else
Azure.IoT Build 0:fa2de1b79154 251 {
Azure.IoT Build 0:fa2de1b79154 252 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 253 unsigned char* temp = (unsigned char*)realloc(b->buffer, b->size + enlargeSize);
Azure.IoT Build 0:fa2de1b79154 254 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 255 {
Azure.IoT Build 0:fa2de1b79154 256 /* Codes_SRS_BUFFER_07_018: [BUFFER_enlarge shall return a nonzero result if any error is encountered.] */
Azure.IoT Build 0:fa2de1b79154 257 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 258 }
Azure.IoT Build 0:fa2de1b79154 259 else
Azure.IoT Build 0:fa2de1b79154 260 {
Azure.IoT Build 0:fa2de1b79154 261 b->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 262 b->size += enlargeSize;
Azure.IoT Build 0:fa2de1b79154 263 result = 0;
Azure.IoT Build 0:fa2de1b79154 264 }
Azure.IoT Build 0:fa2de1b79154 265 }
Azure.IoT Build 0:fa2de1b79154 266 return result;
Azure.IoT Build 0:fa2de1b79154 267 }
Azure.IoT Build 0:fa2de1b79154 268
Azure.IoT Build 0:fa2de1b79154 269 /* 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 270 int BUFFER_size(BUFFER_HANDLE handle, size_t* size)
Azure.IoT Build 0:fa2de1b79154 271 {
Azure.IoT Build 0:fa2de1b79154 272 int result;
Azure.IoT Build 0:fa2de1b79154 273 if ((handle == NULL) || (size == NULL))
Azure.IoT Build 0:fa2de1b79154 274 {
Azure.IoT Build 0:fa2de1b79154 275 /* Codes_SRS_BUFFER_07_022: [BUFFER_size shall return a nonzero value for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 276 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 277 }
Azure.IoT Build 0:fa2de1b79154 278 else
Azure.IoT Build 0:fa2de1b79154 279 {
Azure.IoT Build 0:fa2de1b79154 280 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 281 *size = b->size;
Azure.IoT Build 0:fa2de1b79154 282 result = 0;
Azure.IoT Build 0:fa2de1b79154 283 }
Azure.IoT Build 0:fa2de1b79154 284 return result;
Azure.IoT Build 0:fa2de1b79154 285 }
Azure.IoT Build 0:fa2de1b79154 286
Azure.IoT Build 0:fa2de1b79154 287 /* 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 288 int BUFFER_append(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 289 {
Azure.IoT Build 0:fa2de1b79154 290 int result;
Azure.IoT Build 0:fa2de1b79154 291 if ( (handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2) )
Azure.IoT Build 0:fa2de1b79154 292 {
Azure.IoT Build 0:fa2de1b79154 293 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 294 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 295 }
Azure.IoT Build 0:fa2de1b79154 296 else
Azure.IoT Build 0:fa2de1b79154 297 {
Azure.IoT Build 0:fa2de1b79154 298 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 299 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 300 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 301 {
Azure.IoT Build 0:fa2de1b79154 302 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 303 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 304 }
Azure.IoT Build 0:fa2de1b79154 305 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 306 {
Azure.IoT Build 0:fa2de1b79154 307 /* Codes_SRS_BUFFER_07_023: [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 308 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 309 }
Azure.IoT Build 0:fa2de1b79154 310 else
Azure.IoT Build 0:fa2de1b79154 311 {
Azure.IoT Build 0:fa2de1b79154 312 unsigned char* temp = (unsigned char*)realloc(b1->buffer, b1->size + b2->size);
Azure.IoT Build 0:fa2de1b79154 313 if (temp == NULL)
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 b1->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 321 // Append the BUFFER
Azure.IoT Build 0:fa2de1b79154 322 memcpy(&b1->buffer[b1->size], b2->buffer, b2->size);
Azure.IoT Build 0:fa2de1b79154 323 b1->size += b2->size;
Azure.IoT Build 0:fa2de1b79154 324 result = 0;
Azure.IoT Build 0:fa2de1b79154 325 }
Azure.IoT Build 0:fa2de1b79154 326 }
Azure.IoT Build 0:fa2de1b79154 327 }
Azure.IoT Build 0:fa2de1b79154 328 return result;
Azure.IoT Build 0:fa2de1b79154 329 }
Azure.IoT Build 0:fa2de1b79154 330
Azure.IoT Build 0:fa2de1b79154 331 int BUFFER_prepend(BUFFER_HANDLE handle1, BUFFER_HANDLE handle2)
Azure.IoT Build 0:fa2de1b79154 332 {
Azure.IoT Build 0:fa2de1b79154 333 int result;
Azure.IoT Build 0:fa2de1b79154 334 if ((handle1 == NULL) || (handle2 == NULL) || (handle1 == handle2))
Azure.IoT Build 0:fa2de1b79154 335 {
Azure.IoT Build 0:fa2de1b79154 336 /* : [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 337 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 338 }
Azure.IoT Build 0:fa2de1b79154 339 else
Azure.IoT Build 0:fa2de1b79154 340 {
Azure.IoT Build 0:fa2de1b79154 341 BUFFER* b1 = (BUFFER*)handle1;
Azure.IoT Build 0:fa2de1b79154 342 BUFFER* b2 = (BUFFER*)handle2;
Azure.IoT Build 0:fa2de1b79154 343 if (b1->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 344 {
Azure.IoT Build 0:fa2de1b79154 345 /* : [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 346 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 347 }
Azure.IoT Build 0:fa2de1b79154 348 else if (b2->buffer == NULL)
Azure.IoT Build 0:fa2de1b79154 349 {
Azure.IoT Build 0:fa2de1b79154 350 /* : [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 351 result = __LINE__;
Azure.IoT Build 0:fa2de1b79154 352 }
Azure.IoT Build 0:fa2de1b79154 353 else
Azure.IoT Build 0:fa2de1b79154 354 {
Azure.IoT Build 0:fa2de1b79154 355 unsigned char* temp = (unsigned char*)malloc(b1->size + b2->size);
Azure.IoT Build 0:fa2de1b79154 356 if (temp == NULL)
Azure.IoT Build 0:fa2de1b79154 357 {
Azure.IoT Build 0:fa2de1b79154 358 /* : [BUFFER_append shall return a nonzero upon any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 359 result = __LINE__;
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 // Append the BUFFER
Azure.IoT Build 0:fa2de1b79154 364 memcpy(temp, b2->buffer, b2->size);
Azure.IoT Build 0:fa2de1b79154 365 memcpy(&temp[b2->size], b1->buffer, b1->size);
Azure.IoT Build 0:fa2de1b79154 366 free(b1->buffer);
Azure.IoT Build 0:fa2de1b79154 367 b1->buffer = temp;
Azure.IoT Build 0:fa2de1b79154 368 b1->size += b2->size;
Azure.IoT Build 0:fa2de1b79154 369 result = 0;
Azure.IoT Build 0:fa2de1b79154 370 }
Azure.IoT Build 0:fa2de1b79154 371 }
Azure.IoT Build 0:fa2de1b79154 372 }
Azure.IoT Build 0:fa2de1b79154 373 return result;
Azure.IoT Build 0:fa2de1b79154 374 }
Azure.IoT Build 0:fa2de1b79154 375
Azure.IoT Build 0:fa2de1b79154 376
Azure.IoT Build 0:fa2de1b79154 377 /* Codes_SRS_BUFFER_07_025: [BUFFER_u_char shall return a pointer to the underlying unsigned char*.] */
Azure.IoT Build 0:fa2de1b79154 378 unsigned char* BUFFER_u_char(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 379 {
Azure.IoT Build 0:fa2de1b79154 380 unsigned char* result;
Azure.IoT Build 0:fa2de1b79154 381 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 382 {
Azure.IoT Build 0:fa2de1b79154 383 /* Codes_SRS_BUFFER_07_026: [BUFFER_u_char shall return NULL for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 384 result = NULL;
Azure.IoT Build 0:fa2de1b79154 385 }
Azure.IoT Build 0:fa2de1b79154 386 else
Azure.IoT Build 0:fa2de1b79154 387 {
Azure.IoT Build 0:fa2de1b79154 388 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 389 result = b->buffer;
Azure.IoT Build 0:fa2de1b79154 390 }
Azure.IoT Build 0:fa2de1b79154 391 return result;
Azure.IoT Build 0:fa2de1b79154 392 }
Azure.IoT Build 0:fa2de1b79154 393
Azure.IoT Build 0:fa2de1b79154 394 /* Codes_SRS_BUFFER_07_027: [BUFFER_length shall return the size of the underlying buffer.] */
Azure.IoT Build 0:fa2de1b79154 395 size_t BUFFER_length(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 396 {
Azure.IoT Build 0:fa2de1b79154 397 size_t result;
Azure.IoT Build 0:fa2de1b79154 398 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 399 {
Azure.IoT Build 0:fa2de1b79154 400 /* Codes_SRS_BUFFER_07_028: [BUFFER_length shall return zero for any error that is encountered.] */
Azure.IoT Build 0:fa2de1b79154 401 result = 0;
Azure.IoT Build 0:fa2de1b79154 402 }
Azure.IoT Build 0:fa2de1b79154 403 else
Azure.IoT Build 0:fa2de1b79154 404 {
Azure.IoT Build 0:fa2de1b79154 405 BUFFER* b = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 406 result = b->size;
Azure.IoT Build 0:fa2de1b79154 407 }
Azure.IoT Build 0:fa2de1b79154 408 return result;
Azure.IoT Build 0:fa2de1b79154 409 }
Azure.IoT Build 0:fa2de1b79154 410
Azure.IoT Build 0:fa2de1b79154 411 BUFFER_HANDLE BUFFER_clone(BUFFER_HANDLE handle)
Azure.IoT Build 0:fa2de1b79154 412 {
Azure.IoT Build 0:fa2de1b79154 413 BUFFER_HANDLE result;
Azure.IoT Build 0:fa2de1b79154 414 if (handle == NULL)
Azure.IoT Build 0:fa2de1b79154 415 {
Azure.IoT Build 0:fa2de1b79154 416 result = NULL;
Azure.IoT Build 0:fa2de1b79154 417 }
Azure.IoT Build 0:fa2de1b79154 418 else
Azure.IoT Build 0:fa2de1b79154 419 {
Azure.IoT Build 0:fa2de1b79154 420 BUFFER* suppliedBuff = (BUFFER*)handle;
Azure.IoT Build 0:fa2de1b79154 421 BUFFER* b = (BUFFER*)malloc(sizeof(BUFFER) );
Azure.IoT Build 0:fa2de1b79154 422 if (b != NULL)
Azure.IoT Build 0:fa2de1b79154 423 {
Azure.IoT Build 0:fa2de1b79154 424 if ( (b->buffer = (unsigned char*)malloc(suppliedBuff->size) ) == NULL)
Azure.IoT Build 0:fa2de1b79154 425 {
Azure.IoT Build 0:fa2de1b79154 426 free(b);
Azure.IoT Build 0:fa2de1b79154 427 result = NULL;
Azure.IoT Build 0:fa2de1b79154 428 }
Azure.IoT Build 0:fa2de1b79154 429 else
Azure.IoT Build 0:fa2de1b79154 430 {
Azure.IoT Build 0:fa2de1b79154 431 memcpy(b->buffer, suppliedBuff->buffer, suppliedBuff->size);
Azure.IoT Build 0:fa2de1b79154 432 b->size = suppliedBuff->size;
Azure.IoT Build 0:fa2de1b79154 433 result = (BUFFER_HANDLE)b;
Azure.IoT Build 0:fa2de1b79154 434 }
Azure.IoT Build 0:fa2de1b79154 435 }
Azure.IoT Build 0:fa2de1b79154 436 else
Azure.IoT Build 0:fa2de1b79154 437 {
Azure.IoT Build 0:fa2de1b79154 438 result = NULL;
Azure.IoT Build 0:fa2de1b79154 439 }
Azure.IoT Build 0:fa2de1b79154 440 }
Azure.IoT Build 0:fa2de1b79154 441 return result;
Azure.IoT Build 0:fa2de1b79154 442 }