Adapted to LoRa Semtech + Nucleo
Dependents: LoRaWAN-lmic-app LoRaWAN-lmic-app LoRaWAN-test-10secs LoRaPersonalizedDeviceForEverynet ... more
Fork of cantcoap by
cantcoap.cpp@2:d0d57af6c9df, 2015-11-20 (annotated)
- Committer:
- pnysten
- Date:
- Fri Nov 20 12:30:26 2015 +0000
- Revision:
- 2:d0d57af6c9df
- Parent:
- 1:5eec2844ad47
?
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ashleymills | 0:3d62a105fd34 | 1 | /* |
ashleymills | 0:3d62a105fd34 | 2 | Copyright (c) 2013, Ashley Mills. |
ashleymills | 0:3d62a105fd34 | 3 | All rights reserved. |
ashleymills | 0:3d62a105fd34 | 4 | |
ashleymills | 0:3d62a105fd34 | 5 | Redistribution and use in source and binary forms, with or without |
ashleymills | 0:3d62a105fd34 | 6 | modification, are permitted provided that the following conditions are met: |
ashleymills | 0:3d62a105fd34 | 7 | |
ashleymills | 0:3d62a105fd34 | 8 | 1. Redistributions of source code must retain the above copyright notice, this |
ashleymills | 0:3d62a105fd34 | 9 | list of conditions and the following disclaimer. |
ashleymills | 0:3d62a105fd34 | 10 | 2. Redistributions in binary form must reproduce the above copyright notice, |
ashleymills | 0:3d62a105fd34 | 11 | this list of conditions and the following disclaimer in the documentation |
ashleymills | 0:3d62a105fd34 | 12 | and/or other materials provided with the distribution. |
ashleymills | 0:3d62a105fd34 | 13 | |
ashleymills | 0:3d62a105fd34 | 14 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
ashleymills | 0:3d62a105fd34 | 15 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
ashleymills | 0:3d62a105fd34 | 16 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
ashleymills | 0:3d62a105fd34 | 17 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
ashleymills | 0:3d62a105fd34 | 18 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
ashleymills | 0:3d62a105fd34 | 19 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
ashleymills | 0:3d62a105fd34 | 20 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
ashleymills | 0:3d62a105fd34 | 21 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
ashleymills | 0:3d62a105fd34 | 22 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
ashleymills | 0:3d62a105fd34 | 23 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
ashleymills | 0:3d62a105fd34 | 24 | */ |
ashleymills | 0:3d62a105fd34 | 25 | |
ashleymills | 0:3d62a105fd34 | 26 | // version, 2 bits |
ashleymills | 0:3d62a105fd34 | 27 | // type, 2 bits |
ashleymills | 0:3d62a105fd34 | 28 | // 00 Confirmable |
ashleymills | 0:3d62a105fd34 | 29 | // 01 Non-confirmable |
ashleymills | 0:3d62a105fd34 | 30 | // 10 Acknowledgement |
ashleymills | 0:3d62a105fd34 | 31 | // 11 Reset |
ashleymills | 0:3d62a105fd34 | 32 | |
ashleymills | 0:3d62a105fd34 | 33 | // token length, 4 bits |
ashleymills | 0:3d62a105fd34 | 34 | // length of token in bytes (only 0 to 8 bytes allowed) |
ashleymills | 0:3d62a105fd34 | 35 | #include <stdio.h> |
ashleymills | 0:3d62a105fd34 | 36 | #include <stdlib.h> |
ashleymills | 0:3d62a105fd34 | 37 | #include <stdint.h> |
pnysten | 2:d0d57af6c9df | 38 | //#include <unistd.h> |
ashleymills | 0:3d62a105fd34 | 39 | #include <string.h> |
ashleymills | 0:3d62a105fd34 | 40 | #include "cantcoap.h" |
pnysten | 2:d0d57af6c9df | 41 | #include "lwip/inet.h" |
pnysten | 2:d0d57af6c9df | 42 | #include "mbed.h" |
pnysten | 2:d0d57af6c9df | 43 | //#include <iostream> |
ashleymills | 0:3d62a105fd34 | 44 | |
ashleymills | 0:3d62a105fd34 | 45 | /// Memory-managed constructor. Buffer for PDU is dynamically sized and allocated by the object. |
ashleymills | 0:3d62a105fd34 | 46 | /** |
ashleymills | 0:3d62a105fd34 | 47 | * When using this constructor, the CoapPDU class will allocate space for the PDU. |
ashleymills | 0:3d62a105fd34 | 48 | * Contrast this with the parameterized constructors, which allow the use of an external buffer. |
ashleymills | 0:3d62a105fd34 | 49 | * |
ashleymills | 0:3d62a105fd34 | 50 | * Note, the PDU container and space can be reused by issuing a CoapPDU::reset(). If the new PDU exceeds the |
ashleymills | 0:3d62a105fd34 | 51 | * space of the previously allocated memory, then further memory will be dynamically allocated. |
ashleymills | 0:3d62a105fd34 | 52 | * |
ashleymills | 0:3d62a105fd34 | 53 | * Deleting the object will free the Object container and all dynamically allocated memory. |
ashleymills | 0:3d62a105fd34 | 54 | * |
ashleymills | 0:3d62a105fd34 | 55 | * \note It would have been nice to use something like UDP_CORK or MSG_MORE, to allow separate buffers |
ashleymills | 0:3d62a105fd34 | 56 | * for token, options, and payload but these FLAGS aren't implemented for UDP in LwIP so stuck with one buffer for now. |
ashleymills | 0:3d62a105fd34 | 57 | * |
ashleymills | 0:3d62a105fd34 | 58 | * CoAP version defaults to 1. |
ashleymills | 0:3d62a105fd34 | 59 | * |
ashleymills | 0:3d62a105fd34 | 60 | * \sa CoapPDU::CoapPDU(uint8_t *pdu, int pduLength), CoapPDU::CoapPDU::(uint8_t *buffer, int bufferLength, int pduLength), |
ashleymills | 0:3d62a105fd34 | 61 | * CoapPDU:CoapPDU()~ |
ashleymills | 0:3d62a105fd34 | 62 | * |
ashleymills | 0:3d62a105fd34 | 63 | */ |
ashleymills | 0:3d62a105fd34 | 64 | CoapPDU::CoapPDU() { |
ashleymills | 0:3d62a105fd34 | 65 | // pdu |
ashleymills | 0:3d62a105fd34 | 66 | _pdu = (uint8_t*)calloc(4,sizeof(uint8_t)); |
ashleymills | 0:3d62a105fd34 | 67 | _pduLength = 4; |
ashleymills | 0:3d62a105fd34 | 68 | _bufferLength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 69 | |
ashleymills | 0:3d62a105fd34 | 70 | //options |
ashleymills | 0:3d62a105fd34 | 71 | _numOptions = 0; |
ashleymills | 0:3d62a105fd34 | 72 | _maxAddedOptionNumber = 0; |
ashleymills | 0:3d62a105fd34 | 73 | |
ashleymills | 0:3d62a105fd34 | 74 | // payload |
ashleymills | 0:3d62a105fd34 | 75 | _payloadPointer = NULL; |
ashleymills | 0:3d62a105fd34 | 76 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 77 | |
ashleymills | 0:3d62a105fd34 | 78 | _constructedFromBuffer = 0; |
ashleymills | 0:3d62a105fd34 | 79 | |
ashleymills | 0:3d62a105fd34 | 80 | setVersion(1); |
ashleymills | 0:3d62a105fd34 | 81 | } |
ashleymills | 0:3d62a105fd34 | 82 | |
ashleymills | 0:3d62a105fd34 | 83 | /// Construct a PDU using an external buffer. No copy of the buffer is made. |
ashleymills | 0:3d62a105fd34 | 84 | /** |
ashleymills | 0:3d62a105fd34 | 85 | * This constructor is normally used where a PDU has been received over the network, and it's length is known. |
ashleymills | 0:3d62a105fd34 | 86 | * In this case the CoapPDU object is probably going to be used as a temporary container to access member values. |
ashleymills | 0:3d62a105fd34 | 87 | * |
ashleymills | 0:3d62a105fd34 | 88 | * It is assumed that \b pduLength is the length of the actual CoAP PDU, and consequently the buffer will also be this size, |
ashleymills | 0:3d62a105fd34 | 89 | * contrast this with CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) which allows the buffer to |
ashleymills | 0:3d62a105fd34 | 90 | * be larger than the PDU. |
ashleymills | 0:3d62a105fd34 | 91 | * |
ashleymills | 0:3d62a105fd34 | 92 | * A PDU constructed in this manner must be validated with CoapPDU::validate() before the member variables will be accessible. |
ashleymills | 0:3d62a105fd34 | 93 | * |
ashleymills | 0:3d62a105fd34 | 94 | * \warning The validation call parses the PDU structure to set some internal parameters. If you do |
ashleymills | 0:3d62a105fd34 | 95 | * not validate the PDU, then the behaviour of member access functions will be undefined. |
ashleymills | 0:3d62a105fd34 | 96 | * |
ashleymills | 0:3d62a105fd34 | 97 | * The buffer can be reused by issuing a CoapPDU::reset() but the class will not change the size of the buffer. If the |
ashleymills | 0:3d62a105fd34 | 98 | * newly constructed PDU exceeds the size of the buffer, the function called (for example CoapPDU::addOption) will fail. |
ashleymills | 0:3d62a105fd34 | 99 | * |
ashleymills | 0:3d62a105fd34 | 100 | * Deleting this object will only delete the Object container and will not delete the PDU buffer. |
ashleymills | 0:3d62a105fd34 | 101 | * |
ashleymills | 0:3d62a105fd34 | 102 | * @param pdu A pointer to an array of bytes which comprise the CoAP PDU |
ashleymills | 0:3d62a105fd34 | 103 | * @param pduLength The length of the CoAP PDU pointed to by \b pdu |
ashleymills | 0:3d62a105fd34 | 104 | |
ashleymills | 0:3d62a105fd34 | 105 | * \sa CoapPDU::CoapPDU(), CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) |
ashleymills | 0:3d62a105fd34 | 106 | */ |
ashleymills | 0:3d62a105fd34 | 107 | CoapPDU::CoapPDU(uint8_t *pdu, int pduLength) { |
pnysten | 2:d0d57af6c9df | 108 | CoapPDU(pdu,pduLength,pduLength); |
pnysten | 2:d0d57af6c9df | 109 | // delegated to CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) |
ashleymills | 0:3d62a105fd34 | 110 | } |
ashleymills | 0:3d62a105fd34 | 111 | |
ashleymills | 0:3d62a105fd34 | 112 | /// Construct object from external buffer that may be larger than actual PDU. |
ashleymills | 0:3d62a105fd34 | 113 | /** |
ashleymills | 0:3d62a105fd34 | 114 | * This differs from CoapPDU::CoapPDU(uint8_t *pdu, int pduLength) in that the buffer may be larger |
ashleymills | 0:3d62a105fd34 | 115 | * than the actual CoAP PDU contained int the buffer. This is typically used when a large buffer is reused |
ashleymills | 0:3d62a105fd34 | 116 | * multiple times. Note that \b pduLength can be 0. |
ashleymills | 0:3d62a105fd34 | 117 | * |
ashleymills | 0:3d62a105fd34 | 118 | * If an actual CoAP PDU is passed in the buffer, \b pduLength should match its length. CoapPDU::validate() must |
ashleymills | 0:3d62a105fd34 | 119 | * be called to initiate the object before member functions can be used. |
ashleymills | 0:3d62a105fd34 | 120 | * |
ashleymills | 0:3d62a105fd34 | 121 | * A PDU constructed in this manner must be validated with CoapPDU::validate() before the member variables will be accessible. |
ashleymills | 0:3d62a105fd34 | 122 | * |
ashleymills | 0:3d62a105fd34 | 123 | * \warning The validation call parses the PDU structure to set some internal parameters. If you do |
ashleymills | 0:3d62a105fd34 | 124 | * not validate the PDU, then the behaviour of member access functions will be undefined. |
ashleymills | 0:3d62a105fd34 | 125 | * |
ashleymills | 0:3d62a105fd34 | 126 | * The buffer can be reused by issuing a CoapPDU::reset() but the class will not change the size of the buffer. If the |
ashleymills | 0:3d62a105fd34 | 127 | * newly constructed PDU exceeds the size of the buffer, the function called (for example CoapPDU::addOption) will fail. |
ashleymills | 0:3d62a105fd34 | 128 | * |
ashleymills | 0:3d62a105fd34 | 129 | * Deleting this object will only delete the Object container and will not delete the PDU buffer. |
ashleymills | 0:3d62a105fd34 | 130 | * |
ashleymills | 0:3d62a105fd34 | 131 | * \param buffer A buffer which either contains a CoAP PDU or is intended to be used to construct one. |
ashleymills | 0:3d62a105fd34 | 132 | * \param bufferLength The length of the buffer |
ashleymills | 0:3d62a105fd34 | 133 | * \param pduLength If the buffer contains a CoAP PDU, this specifies the length of the PDU within the buffer. |
ashleymills | 0:3d62a105fd34 | 134 | * |
ashleymills | 0:3d62a105fd34 | 135 | * \sa CoapPDU::CoapPDU(), CoapPDU::CoapPDU(uint8_t *pdu, int pduLength) |
ashleymills | 0:3d62a105fd34 | 136 | */ |
ashleymills | 0:3d62a105fd34 | 137 | CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) { |
ashleymills | 0:3d62a105fd34 | 138 | // sanity |
ashleymills | 0:3d62a105fd34 | 139 | if(pduLength<4&&pduLength!=0) { |
ashleymills | 0:3d62a105fd34 | 140 | DBG("PDU cannot have a length less than 4"); |
ashleymills | 0:3d62a105fd34 | 141 | } |
ashleymills | 0:3d62a105fd34 | 142 | |
ashleymills | 0:3d62a105fd34 | 143 | // pdu |
ashleymills | 0:3d62a105fd34 | 144 | _pdu = buffer; |
ashleymills | 0:3d62a105fd34 | 145 | _bufferLength = bufferLength; |
ashleymills | 0:3d62a105fd34 | 146 | if(pduLength==0) { |
ashleymills | 0:3d62a105fd34 | 147 | // this is actually a fresh pdu, header always exists |
ashleymills | 0:3d62a105fd34 | 148 | _pduLength = 4; |
ashleymills | 0:3d62a105fd34 | 149 | // make sure header is zeroed |
ashleymills | 0:3d62a105fd34 | 150 | _pdu[0] = 0x00; _pdu[1] = 0x00; _pdu[2] = 0x00; _pdu[3] = 0x00; |
ashleymills | 0:3d62a105fd34 | 151 | setVersion(1); |
ashleymills | 0:3d62a105fd34 | 152 | } else { |
ashleymills | 0:3d62a105fd34 | 153 | _pduLength = pduLength; |
ashleymills | 0:3d62a105fd34 | 154 | } |
ashleymills | 0:3d62a105fd34 | 155 | |
ashleymills | 0:3d62a105fd34 | 156 | _constructedFromBuffer = 1; |
ashleymills | 0:3d62a105fd34 | 157 | |
ashleymills | 0:3d62a105fd34 | 158 | // options |
ashleymills | 0:3d62a105fd34 | 159 | _numOptions = 0; |
ashleymills | 0:3d62a105fd34 | 160 | _maxAddedOptionNumber = 0; |
ashleymills | 0:3d62a105fd34 | 161 | |
ashleymills | 0:3d62a105fd34 | 162 | // payload |
ashleymills | 0:3d62a105fd34 | 163 | _payloadPointer = NULL; |
ashleymills | 0:3d62a105fd34 | 164 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 165 | } |
ashleymills | 0:3d62a105fd34 | 166 | |
ashleymills | 0:3d62a105fd34 | 167 | /// Reset CoapPDU container so it can be reused to build a new PDU. |
ashleymills | 0:3d62a105fd34 | 168 | /** |
ashleymills | 0:3d62a105fd34 | 169 | * This resets the CoapPDU container, setting the pdu length, option count, etc back to zero. The |
ashleymills | 0:3d62a105fd34 | 170 | * PDU can then be populated as if it were newly constructed. |
ashleymills | 0:3d62a105fd34 | 171 | * |
ashleymills | 0:3d62a105fd34 | 172 | * Note that the space available will depend on how the CoapPDU was originally constructed: |
ashleymills | 0:3d62a105fd34 | 173 | * -# CoapPDU::CoapPDU() |
ashleymills | 0:3d62a105fd34 | 174 | * |
ashleymills | 0:3d62a105fd34 | 175 | * Available space initially be \b _pduLength. But further space will be allocated as needed on demand, |
ashleymills | 0:3d62a105fd34 | 176 | * limited only by the OS/environment. |
ashleymills | 0:3d62a105fd34 | 177 | * |
ashleymills | 0:3d62a105fd34 | 178 | * -# CoapPDU::CoapPDU(uint8_t *pdu, int pduLength) |
ashleymills | 0:3d62a105fd34 | 179 | * |
ashleymills | 0:3d62a105fd34 | 180 | * Space is limited by the variable \b pduLength. The PDU cannot exceed \b pduLength bytes. |
ashleymills | 0:3d62a105fd34 | 181 | * |
ashleymills | 0:3d62a105fd34 | 182 | * -# CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) |
ashleymills | 0:3d62a105fd34 | 183 | * |
ashleymills | 0:3d62a105fd34 | 184 | * Space is limited by the variable \b bufferLength. The PDU cannot exceed \b bufferLength bytes. |
ashleymills | 0:3d62a105fd34 | 185 | * |
ashleymills | 0:3d62a105fd34 | 186 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 187 | */ |
ashleymills | 0:3d62a105fd34 | 188 | int CoapPDU::reset() { |
ashleymills | 0:3d62a105fd34 | 189 | // pdu |
ashleymills | 0:3d62a105fd34 | 190 | memset(_pdu,0x00,_bufferLength); |
ashleymills | 0:3d62a105fd34 | 191 | // packet always has at least a header |
ashleymills | 0:3d62a105fd34 | 192 | _pduLength = 4; |
ashleymills | 0:3d62a105fd34 | 193 | |
ashleymills | 0:3d62a105fd34 | 194 | // options |
ashleymills | 0:3d62a105fd34 | 195 | _numOptions = 0; |
ashleymills | 0:3d62a105fd34 | 196 | _maxAddedOptionNumber = 0; |
ashleymills | 0:3d62a105fd34 | 197 | // payload |
ashleymills | 0:3d62a105fd34 | 198 | _payloadPointer = NULL; |
ashleymills | 0:3d62a105fd34 | 199 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 200 | return 0; |
ashleymills | 0:3d62a105fd34 | 201 | } |
ashleymills | 0:3d62a105fd34 | 202 | |
ashleymills | 0:3d62a105fd34 | 203 | /// Validates a PDU constructed using an external buffer. |
ashleymills | 0:3d62a105fd34 | 204 | /** |
ashleymills | 0:3d62a105fd34 | 205 | * When a CoapPDU is constructed using an external buffer, the programmer must call this function to |
ashleymills | 0:3d62a105fd34 | 206 | * check that the received PDU is a valid CoAP PDU. |
ashleymills | 0:3d62a105fd34 | 207 | * |
ashleymills | 0:3d62a105fd34 | 208 | * \warning The validation call parses the PDU structure to set some internal parameters. If you do |
ashleymills | 0:3d62a105fd34 | 209 | * not validate the PDU, then the behaviour of member access functions will be undefined. |
ashleymills | 0:3d62a105fd34 | 210 | * |
ashleymills | 0:3d62a105fd34 | 211 | * \return 1 if the PDU validates correctly, 0 if not. XXX maybe add some error codes |
ashleymills | 0:3d62a105fd34 | 212 | */ |
ashleymills | 0:3d62a105fd34 | 213 | int CoapPDU::validate() { |
ashleymills | 0:3d62a105fd34 | 214 | if(_pduLength<4) { |
ashleymills | 0:3d62a105fd34 | 215 | DBG("PDU has to be a minimum of 4 bytes. This: %d bytes",_pduLength); |
ashleymills | 0:3d62a105fd34 | 216 | return 0; |
ashleymills | 0:3d62a105fd34 | 217 | } |
ashleymills | 0:3d62a105fd34 | 218 | |
ashleymills | 0:3d62a105fd34 | 219 | // check header |
ashleymills | 0:3d62a105fd34 | 220 | // 0 1 2 3 |
ashleymills | 0:3d62a105fd34 | 221 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
ashleymills | 0:3d62a105fd34 | 222 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
ashleymills | 0:3d62a105fd34 | 223 | // |Ver| T | TKL | Code | Message ID | |
ashleymills | 0:3d62a105fd34 | 224 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
ashleymills | 0:3d62a105fd34 | 225 | // | Token (if any, TKL bytes) ... |
ashleymills | 0:3d62a105fd34 | 226 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
ashleymills | 0:3d62a105fd34 | 227 | // | Options (if any) ... |
ashleymills | 0:3d62a105fd34 | 228 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
ashleymills | 0:3d62a105fd34 | 229 | // |1 1 1 1 1 1 1 1| Payload (if any) ... |
ashleymills | 0:3d62a105fd34 | 230 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
ashleymills | 0:3d62a105fd34 | 231 | |
ashleymills | 0:3d62a105fd34 | 232 | DBG("Version: %d",getVersion()); |
ashleymills | 0:3d62a105fd34 | 233 | DBG("Type: %d",getType()); |
ashleymills | 0:3d62a105fd34 | 234 | |
ashleymills | 0:3d62a105fd34 | 235 | // token length must be between 0 and 8 |
ashleymills | 0:3d62a105fd34 | 236 | int tokenLength = getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 237 | if(tokenLength<0||tokenLength>8) { |
ashleymills | 0:3d62a105fd34 | 238 | DBG("Invalid token length: %d",tokenLength); |
ashleymills | 0:3d62a105fd34 | 239 | return 0; |
ashleymills | 0:3d62a105fd34 | 240 | } |
ashleymills | 0:3d62a105fd34 | 241 | DBG("Token length: %d",tokenLength); |
ashleymills | 0:3d62a105fd34 | 242 | // check total length |
ashleymills | 0:3d62a105fd34 | 243 | if((COAP_HDR_SIZE+tokenLength)>_pduLength) { |
ashleymills | 0:3d62a105fd34 | 244 | DBG("Token length would make pdu longer than actual length."); |
ashleymills | 0:3d62a105fd34 | 245 | return 0; |
ashleymills | 0:3d62a105fd34 | 246 | } |
ashleymills | 0:3d62a105fd34 | 247 | |
ashleymills | 0:3d62a105fd34 | 248 | // check that code is valid |
ashleymills | 0:3d62a105fd34 | 249 | CoapPDU::Code code = getCode(); |
ashleymills | 0:3d62a105fd34 | 250 | if(code<COAP_EMPTY || |
ashleymills | 0:3d62a105fd34 | 251 | (code>COAP_DELETE&&code<COAP_CREATED) || |
ashleymills | 0:3d62a105fd34 | 252 | (code>COAP_CONTENT&&code<COAP_BAD_REQUEST) || |
ashleymills | 0:3d62a105fd34 | 253 | (code>COAP_NOT_ACCEPTABLE&&code<COAP_PRECONDITION_FAILED) || |
ashleymills | 0:3d62a105fd34 | 254 | (code==0x8E) || |
ashleymills | 0:3d62a105fd34 | 255 | (code>COAP_UNSUPPORTED_CONTENT_FORMAT&&code<COAP_INTERNAL_SERVER_ERROR) || |
ashleymills | 0:3d62a105fd34 | 256 | (code>COAP_PROXYING_NOT_SUPPORTED) ) { |
ashleymills | 0:3d62a105fd34 | 257 | DBG("Invalid CoAP code: %d",code); |
pnysten | 2:d0d57af6c9df | 258 | //return 0; |
ashleymills | 0:3d62a105fd34 | 259 | } |
ashleymills | 0:3d62a105fd34 | 260 | DBG("CoAP code: %d",code); |
ashleymills | 0:3d62a105fd34 | 261 | |
ashleymills | 0:3d62a105fd34 | 262 | // token can be anything so nothing to check |
ashleymills | 0:3d62a105fd34 | 263 | |
ashleymills | 0:3d62a105fd34 | 264 | // check that options all make sense |
ashleymills | 0:3d62a105fd34 | 265 | uint16_t optionDelta =0, optionNumber = 0, optionValueLength = 0; |
ashleymills | 0:3d62a105fd34 | 266 | int totalLength = 0; |
ashleymills | 0:3d62a105fd34 | 267 | |
ashleymills | 0:3d62a105fd34 | 268 | // first option occurs after token |
ashleymills | 0:3d62a105fd34 | 269 | int optionPos = COAP_HDR_SIZE + getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 270 | |
ashleymills | 0:3d62a105fd34 | 271 | // may be 0 options |
ashleymills | 0:3d62a105fd34 | 272 | if(optionPos==_pduLength) { |
ashleymills | 0:3d62a105fd34 | 273 | DBG("No options. No payload."); |
ashleymills | 0:3d62a105fd34 | 274 | _numOptions = 0; |
ashleymills | 0:3d62a105fd34 | 275 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 276 | return 1; |
ashleymills | 0:3d62a105fd34 | 277 | } |
ashleymills | 0:3d62a105fd34 | 278 | |
ashleymills | 0:3d62a105fd34 | 279 | int bytesRemaining = _pduLength-optionPos; |
ashleymills | 0:3d62a105fd34 | 280 | int numOptions = 0; |
ashleymills | 0:3d62a105fd34 | 281 | uint8_t upperNibble = 0x00, lowerNibble = 0x00; |
ashleymills | 0:3d62a105fd34 | 282 | |
ashleymills | 0:3d62a105fd34 | 283 | // walk over options and record information |
ashleymills | 0:3d62a105fd34 | 284 | while(1) { |
ashleymills | 0:3d62a105fd34 | 285 | // check for payload marker |
ashleymills | 0:3d62a105fd34 | 286 | if(bytesRemaining>0) { |
ashleymills | 0:3d62a105fd34 | 287 | uint8_t optionHeader = _pdu[optionPos]; |
ashleymills | 0:3d62a105fd34 | 288 | if(optionHeader==0xFF) { |
ashleymills | 0:3d62a105fd34 | 289 | // payload |
ashleymills | 0:3d62a105fd34 | 290 | if(bytesRemaining>1) { |
ashleymills | 0:3d62a105fd34 | 291 | _payloadPointer = &_pdu[optionPos+1]; |
ashleymills | 0:3d62a105fd34 | 292 | _payloadLength = (bytesRemaining-1); |
ashleymills | 0:3d62a105fd34 | 293 | _numOptions = numOptions; |
ashleymills | 0:3d62a105fd34 | 294 | DBG("Payload found, length: %d",_payloadLength); |
ashleymills | 0:3d62a105fd34 | 295 | return 1; |
ashleymills | 0:3d62a105fd34 | 296 | } |
ashleymills | 0:3d62a105fd34 | 297 | // payload marker but no payload |
ashleymills | 0:3d62a105fd34 | 298 | _payloadPointer = NULL; |
ashleymills | 0:3d62a105fd34 | 299 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 300 | DBG("Payload marker but no payload."); |
ashleymills | 0:3d62a105fd34 | 301 | return 0; |
ashleymills | 0:3d62a105fd34 | 302 | } |
ashleymills | 0:3d62a105fd34 | 303 | |
ashleymills | 0:3d62a105fd34 | 304 | // check that option delta and option length are valid values |
ashleymills | 0:3d62a105fd34 | 305 | upperNibble = (optionHeader & 0xF0) >> 4; |
ashleymills | 0:3d62a105fd34 | 306 | lowerNibble = (optionHeader & 0x0F); |
ashleymills | 0:3d62a105fd34 | 307 | if(upperNibble==0x0F||lowerNibble==0x0F) { |
ashleymills | 0:3d62a105fd34 | 308 | DBG("Expected option header or payload marker, got: 0x%x%x",upperNibble,lowerNibble); |
ashleymills | 0:3d62a105fd34 | 309 | return 0; |
ashleymills | 0:3d62a105fd34 | 310 | } |
ashleymills | 0:3d62a105fd34 | 311 | DBG("Option header byte appears sane: 0x%x%x",upperNibble,lowerNibble); |
ashleymills | 0:3d62a105fd34 | 312 | } else { |
ashleymills | 0:3d62a105fd34 | 313 | DBG("No more data. No payload."); |
ashleymills | 0:3d62a105fd34 | 314 | _payloadPointer = NULL; |
ashleymills | 0:3d62a105fd34 | 315 | _payloadLength = 0; |
ashleymills | 0:3d62a105fd34 | 316 | _numOptions = numOptions; |
ashleymills | 0:3d62a105fd34 | 317 | return 1; |
ashleymills | 0:3d62a105fd34 | 318 | } |
ashleymills | 0:3d62a105fd34 | 319 | |
ashleymills | 0:3d62a105fd34 | 320 | // skip over option header byte |
ashleymills | 0:3d62a105fd34 | 321 | bytesRemaining--; |
ashleymills | 0:3d62a105fd34 | 322 | |
ashleymills | 0:3d62a105fd34 | 323 | // check that there is enough space for the extended delta and length bytes (if any) |
ashleymills | 0:3d62a105fd34 | 324 | int headerBytesNeeded = computeExtraBytes(upperNibble); |
ashleymills | 0:3d62a105fd34 | 325 | DBG("%d extra bytes needed for extended delta",headerBytesNeeded); |
ashleymills | 0:3d62a105fd34 | 326 | if(headerBytesNeeded>bytesRemaining) { |
ashleymills | 0:3d62a105fd34 | 327 | DBG("Not enough space for extended option delta, needed %d, have %d.",headerBytesNeeded,bytesRemaining); |
ashleymills | 0:3d62a105fd34 | 328 | return 0; |
ashleymills | 0:3d62a105fd34 | 329 | } |
ashleymills | 0:3d62a105fd34 | 330 | headerBytesNeeded += computeExtraBytes(lowerNibble); |
ashleymills | 0:3d62a105fd34 | 331 | if(headerBytesNeeded>bytesRemaining) { |
ashleymills | 0:3d62a105fd34 | 332 | DBG("Not enough space for extended option length, needed %d, have %d.", |
ashleymills | 0:3d62a105fd34 | 333 | (headerBytesNeeded-computeExtraBytes(upperNibble)),bytesRemaining); |
ashleymills | 0:3d62a105fd34 | 334 | return 0; |
ashleymills | 0:3d62a105fd34 | 335 | } |
ashleymills | 0:3d62a105fd34 | 336 | DBG("Enough space for extended delta and length: %d, continuing.",headerBytesNeeded); |
ashleymills | 0:3d62a105fd34 | 337 | |
ashleymills | 0:3d62a105fd34 | 338 | // extract option details |
ashleymills | 0:3d62a105fd34 | 339 | optionDelta = getOptionDelta(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 340 | optionNumber += optionDelta; |
ashleymills | 0:3d62a105fd34 | 341 | optionValueLength = getOptionValueLength(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 342 | DBG("Got option: %d with length %d",optionNumber,optionValueLength); |
ashleymills | 0:3d62a105fd34 | 343 | // compute total length |
ashleymills | 0:3d62a105fd34 | 344 | totalLength = 1; // mandatory header |
ashleymills | 0:3d62a105fd34 | 345 | totalLength += computeExtraBytes(optionDelta); |
ashleymills | 0:3d62a105fd34 | 346 | totalLength += computeExtraBytes(optionValueLength); |
ashleymills | 0:3d62a105fd34 | 347 | totalLength += optionValueLength; |
ashleymills | 0:3d62a105fd34 | 348 | // check there is enough space |
ashleymills | 0:3d62a105fd34 | 349 | if(optionPos+totalLength>_pduLength) { |
ashleymills | 0:3d62a105fd34 | 350 | DBG("Not enough space for option payload, needed %d, have %d.",(totalLength-headerBytesNeeded-1),_pduLength-optionPos); |
ashleymills | 0:3d62a105fd34 | 351 | return 0; |
ashleymills | 0:3d62a105fd34 | 352 | } |
ashleymills | 0:3d62a105fd34 | 353 | DBG("Enough space for option payload: %d %d",optionValueLength,(totalLength-headerBytesNeeded-1)); |
ashleymills | 0:3d62a105fd34 | 354 | |
ashleymills | 0:3d62a105fd34 | 355 | // recompute bytesRemaining |
ashleymills | 0:3d62a105fd34 | 356 | bytesRemaining -= totalLength; |
ashleymills | 0:3d62a105fd34 | 357 | bytesRemaining++; // correct for previous -- |
ashleymills | 0:3d62a105fd34 | 358 | |
ashleymills | 0:3d62a105fd34 | 359 | // move to next option |
ashleymills | 0:3d62a105fd34 | 360 | optionPos += totalLength; |
ashleymills | 0:3d62a105fd34 | 361 | |
ashleymills | 0:3d62a105fd34 | 362 | // inc number of options XXX |
ashleymills | 0:3d62a105fd34 | 363 | numOptions++; |
ashleymills | 0:3d62a105fd34 | 364 | } |
ashleymills | 0:3d62a105fd34 | 365 | |
ashleymills | 0:3d62a105fd34 | 366 | return 1; |
ashleymills | 0:3d62a105fd34 | 367 | } |
ashleymills | 0:3d62a105fd34 | 368 | |
ashleymills | 0:3d62a105fd34 | 369 | /// Destructor. Does not free buffer if constructor passed an external buffer. |
ashleymills | 0:3d62a105fd34 | 370 | /** |
ashleymills | 0:3d62a105fd34 | 371 | * The destructor acts differently, depending on how the object was initially constructed (from buffer or not): |
ashleymills | 0:3d62a105fd34 | 372 | * |
ashleymills | 0:3d62a105fd34 | 373 | * -# CoapPDU::CoapPDU() |
ashleymills | 0:3d62a105fd34 | 374 | * |
ashleymills | 0:3d62a105fd34 | 375 | * Complete object is destroyed. |
ashleymills | 0:3d62a105fd34 | 376 | * |
ashleymills | 0:3d62a105fd34 | 377 | * -# CoapPDU::CoapPDU(uint8_t *pdu, int pduLength) |
ashleymills | 0:3d62a105fd34 | 378 | * |
ashleymills | 0:3d62a105fd34 | 379 | * Only object container is destroyed. \b pdu is left intact. |
ashleymills | 0:3d62a105fd34 | 380 | * |
ashleymills | 0:3d62a105fd34 | 381 | * -# CoapPDU::CoapPDU(uint8_t *buffer, int bufferLength, int pduLength) |
ashleymills | 0:3d62a105fd34 | 382 | * |
ashleymills | 0:3d62a105fd34 | 383 | * Only object container is destroyed. \b pdu is left intact. |
ashleymills | 0:3d62a105fd34 | 384 | * |
ashleymills | 0:3d62a105fd34 | 385 | */ |
ashleymills | 0:3d62a105fd34 | 386 | CoapPDU::~CoapPDU() { |
ashleymills | 0:3d62a105fd34 | 387 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 388 | free(_pdu); |
ashleymills | 0:3d62a105fd34 | 389 | } |
ashleymills | 0:3d62a105fd34 | 390 | } |
ashleymills | 0:3d62a105fd34 | 391 | |
ashleymills | 0:3d62a105fd34 | 392 | /// Returns a pointer to the internal buffer. |
ashleymills | 0:3d62a105fd34 | 393 | uint8_t* CoapPDU::getPDUPointer() { |
ashleymills | 0:3d62a105fd34 | 394 | return _pdu; |
ashleymills | 0:3d62a105fd34 | 395 | } |
ashleymills | 0:3d62a105fd34 | 396 | |
ashleymills | 0:3d62a105fd34 | 397 | /// Set the PDU length to the length specified. |
ashleymills | 0:3d62a105fd34 | 398 | /** |
ashleymills | 0:3d62a105fd34 | 399 | * This is used when re-using a PDU container before calling CoapPDU::validate() as it |
ashleymills | 0:3d62a105fd34 | 400 | * is not possible to deduce the length of a PDU since the payload has no length marker. |
ashleymills | 0:3d62a105fd34 | 401 | * \param len The length of the PDU |
ashleymills | 0:3d62a105fd34 | 402 | */ |
ashleymills | 0:3d62a105fd34 | 403 | void CoapPDU::setPDULength(int len) { |
ashleymills | 0:3d62a105fd34 | 404 | _pduLength = len; |
ashleymills | 0:3d62a105fd34 | 405 | } |
ashleymills | 0:3d62a105fd34 | 406 | |
ashleymills | 1:5eec2844ad47 | 407 | /// Shorthand function for setting a resource URI. |
ashleymills | 1:5eec2844ad47 | 408 | /** |
ashleymills | 1:5eec2844ad47 | 409 | * Calls CoapPDU::setURI(uri,strlen(uri). |
ashleymills | 1:5eec2844ad47 | 410 | */ |
ashleymills | 1:5eec2844ad47 | 411 | int CoapPDU::setURI(char *uri) { |
pnysten | 2:d0d57af6c9df | 412 | return setURI(uri,(int)strlen(uri)); |
ashleymills | 1:5eec2844ad47 | 413 | } |
ashleymills | 0:3d62a105fd34 | 414 | |
ashleymills | 0:3d62a105fd34 | 415 | /// Shorthand function for setting a resource URI. |
ashleymills | 0:3d62a105fd34 | 416 | /** |
pnysten | 2:d0d57af6c9df | 417 | * This will parse the supplied \b uri and construct enough URI_PATH and URI_QUERY options to encode it. |
ashleymills | 0:3d62a105fd34 | 418 | * The options are added to the PDU. |
ashleymills | 0:3d62a105fd34 | 419 | * |
pnysten | 2:d0d57af6c9df | 420 | * At present only simple URI formatting is handled, only '/','?', and '&' separators, and no port or protocol specificaiton. |
pnysten | 2:d0d57af6c9df | 421 | * |
pnysten | 2:d0d57af6c9df | 422 | * The function will split on '/' and create URI_PATH elements until it either reaches the end of the string |
pnysten | 2:d0d57af6c9df | 423 | * in which case it will stop or if it reaches '?' it will start splitting on '&' and create URI_QUERY elements |
pnysten | 2:d0d57af6c9df | 424 | * until it reaches the end of the string. |
ashleymills | 0:3d62a105fd34 | 425 | * |
pnysten | 2:d0d57af6c9df | 426 | * Here is an example: |
pnysten | 2:d0d57af6c9df | 427 | * |
pnysten | 2:d0d57af6c9df | 428 | * /a/b/c/d?x=1&y=2&z=3 |
pnysten | 2:d0d57af6c9df | 429 | * |
pnysten | 2:d0d57af6c9df | 430 | * Will be broken into four URI_PATH elements "a", "b", "c", "d", and three URI_QUERY elements "x=1", "y=2", "z=3" |
pnysten | 2:d0d57af6c9df | 431 | * |
pnysten | 2:d0d57af6c9df | 432 | * TODO: Add protocol extraction, port extraction, and some malformity checking. |
pnysten | 2:d0d57af6c9df | 433 | * |
ashleymills | 0:3d62a105fd34 | 434 | * \param uri The uri to parse. |
ashleymills | 0:3d62a105fd34 | 435 | * \param urilen The length of the uri to parse. |
ashleymills | 0:3d62a105fd34 | 436 | * |
ashleymills | 0:3d62a105fd34 | 437 | * \return 1 on success, 0 on failure. |
ashleymills | 0:3d62a105fd34 | 438 | */ |
ashleymills | 0:3d62a105fd34 | 439 | int CoapPDU::setURI(char *uri, int urilen) { |
pnysten | 2:d0d57af6c9df | 440 | // only '/', '?', '&' and ascii chars allowed |
ashleymills | 0:3d62a105fd34 | 441 | |
ashleymills | 0:3d62a105fd34 | 442 | // sanitation |
ashleymills | 0:3d62a105fd34 | 443 | if(urilen<=0||uri==NULL) { |
ashleymills | 0:3d62a105fd34 | 444 | DBG("Null or zero-length uri passed."); |
ashleymills | 0:3d62a105fd34 | 445 | return 1; |
ashleymills | 0:3d62a105fd34 | 446 | } |
ashleymills | 0:3d62a105fd34 | 447 | |
ashleymills | 0:3d62a105fd34 | 448 | // single character URI path (including '/' case) |
ashleymills | 0:3d62a105fd34 | 449 | if(urilen==1) { |
ashleymills | 0:3d62a105fd34 | 450 | addOption(COAP_OPTION_URI_PATH,1,(uint8_t*)uri); |
ashleymills | 0:3d62a105fd34 | 451 | return 0; |
ashleymills | 0:3d62a105fd34 | 452 | } |
ashleymills | 0:3d62a105fd34 | 453 | |
pnysten | 2:d0d57af6c9df | 454 | // TODO, queries |
pnysten | 2:d0d57af6c9df | 455 | // extract ? to mark where to stop processing path components |
pnysten | 2:d0d57af6c9df | 456 | // and then process the query params |
pnysten | 2:d0d57af6c9df | 457 | |
ashleymills | 0:3d62a105fd34 | 458 | // local vars |
ashleymills | 0:3d62a105fd34 | 459 | char *startP=uri,*endP=NULL; |
pnysten | 2:d0d57af6c9df | 460 | long oLen = 0; |
pnysten | 2:d0d57af6c9df | 461 | char splitChar = '/'; |
pnysten | 2:d0d57af6c9df | 462 | int queryStageTriggered = 0; |
pnysten | 2:d0d57af6c9df | 463 | uint16_t optionType = COAP_OPTION_URI_PATH; |
ashleymills | 0:3d62a105fd34 | 464 | while(1) { |
pnysten | 2:d0d57af6c9df | 465 | // stop at end of string or query |
ashleymills | 0:3d62a105fd34 | 466 | if(*startP==0x00||*(startP+1)==0x00) { |
ashleymills | 0:3d62a105fd34 | 467 | break; |
ashleymills | 0:3d62a105fd34 | 468 | } |
ashleymills | 0:3d62a105fd34 | 469 | |
ashleymills | 0:3d62a105fd34 | 470 | // ignore leading slash |
pnysten | 2:d0d57af6c9df | 471 | if(*startP==splitChar) { |
ashleymills | 0:3d62a105fd34 | 472 | DBG("Skipping leading slash"); |
ashleymills | 0:3d62a105fd34 | 473 | startP++; |
ashleymills | 0:3d62a105fd34 | 474 | } |
ashleymills | 0:3d62a105fd34 | 475 | |
ashleymills | 0:3d62a105fd34 | 476 | // find next split point |
pnysten | 2:d0d57af6c9df | 477 | endP = strchr(startP,splitChar); |
ashleymills | 0:3d62a105fd34 | 478 | |
ashleymills | 0:3d62a105fd34 | 479 | // might not be another slash |
ashleymills | 0:3d62a105fd34 | 480 | if(endP==NULL) { |
ashleymills | 0:3d62a105fd34 | 481 | DBG("Ending out of slash"); |
pnysten | 2:d0d57af6c9df | 482 | // check if there is a ? |
pnysten | 2:d0d57af6c9df | 483 | endP = strchr(startP,'?'); |
pnysten | 2:d0d57af6c9df | 484 | // done if no queries |
pnysten | 2:d0d57af6c9df | 485 | if(endP==NULL) { |
pnysten | 2:d0d57af6c9df | 486 | endP = uri+urilen; |
pnysten | 2:d0d57af6c9df | 487 | } else { |
pnysten | 2:d0d57af6c9df | 488 | queryStageTriggered = 1; |
pnysten | 2:d0d57af6c9df | 489 | } |
ashleymills | 0:3d62a105fd34 | 490 | } |
ashleymills | 0:3d62a105fd34 | 491 | |
ashleymills | 0:3d62a105fd34 | 492 | // get length of segment |
ashleymills | 0:3d62a105fd34 | 493 | oLen = endP-startP; |
ashleymills | 0:3d62a105fd34 | 494 | |
pnysten | 2:d0d57af6c9df | 495 | #ifdef DEBUG |
pnysten | 2:d0d57af6c9df | 496 | char *b = (char*)malloc(oLen+1); |
pnysten | 2:d0d57af6c9df | 497 | memcpy(b,startP,oLen); |
pnysten | 2:d0d57af6c9df | 498 | b[oLen] = 0x00; |
pnysten | 2:d0d57af6c9df | 499 | DBG("Adding URI_PATH %s",b); |
pnysten | 2:d0d57af6c9df | 500 | free(b); |
pnysten | 2:d0d57af6c9df | 501 | #endif |
ashleymills | 0:3d62a105fd34 | 502 | |
ashleymills | 0:3d62a105fd34 | 503 | // add option |
pnysten | 2:d0d57af6c9df | 504 | if(addOption(optionType,oLen,(uint8_t*)startP)!=0) { |
ashleymills | 0:3d62a105fd34 | 505 | DBG("Error adding option"); |
ashleymills | 0:3d62a105fd34 | 506 | return 1; |
ashleymills | 0:3d62a105fd34 | 507 | } |
ashleymills | 0:3d62a105fd34 | 508 | startP = endP; |
pnysten | 2:d0d57af6c9df | 509 | |
pnysten | 2:d0d57af6c9df | 510 | if(queryStageTriggered) { |
pnysten | 2:d0d57af6c9df | 511 | splitChar = '&'; |
pnysten | 2:d0d57af6c9df | 512 | optionType = COAP_OPTION_URI_QUERY; |
pnysten | 2:d0d57af6c9df | 513 | startP++; |
pnysten | 2:d0d57af6c9df | 514 | queryStageTriggered = false; |
pnysten | 2:d0d57af6c9df | 515 | } |
ashleymills | 0:3d62a105fd34 | 516 | } |
ashleymills | 0:3d62a105fd34 | 517 | |
ashleymills | 0:3d62a105fd34 | 518 | return 0; |
ashleymills | 0:3d62a105fd34 | 519 | } |
pnysten | 2:d0d57af6c9df | 520 | |
ashleymills | 1:5eec2844ad47 | 521 | /// Shorthand for adding a URI QUERY to the option list. |
ashleymills | 1:5eec2844ad47 | 522 | /** |
ashleymills | 1:5eec2844ad47 | 523 | * Adds a new option to the CoAP PDU that encodes a URI_QUERY. |
ashleymills | 1:5eec2844ad47 | 524 | * |
ashleymills | 1:5eec2844ad47 | 525 | * \param query The uri query to encode. |
ashleymills | 1:5eec2844ad47 | 526 | * \return 0 on success, 1 on failure. |
ashleymills | 1:5eec2844ad47 | 527 | */ |
ashleymills | 1:5eec2844ad47 | 528 | int CoapPDU::addURIQuery(char *query) { |
ashleymills | 1:5eec2844ad47 | 529 | return addOption(COAP_OPTION_URI_QUERY,strlen(query),(uint8_t*)query); |
ashleymills | 1:5eec2844ad47 | 530 | } |
ashleymills | 0:3d62a105fd34 | 531 | |
pnysten | 2:d0d57af6c9df | 532 | /// Concatenates any URI_PATH elements and URI_QUERY elements into a single string. |
ashleymills | 0:3d62a105fd34 | 533 | /** |
pnysten | 2:d0d57af6c9df | 534 | * Parses the PDU options and extracts all URI_PATH and URI_QUERY elements, |
pnysten | 2:d0d57af6c9df | 535 | * concatenating them into a single string with slash and amphersand separators accordingly. |
pnysten | 2:d0d57af6c9df | 536 | * |
pnysten | 2:d0d57af6c9df | 537 | * The produced string will be NULL terminated. |
ashleymills | 0:3d62a105fd34 | 538 | * |
ashleymills | 0:3d62a105fd34 | 539 | * \param dst Buffer into which to copy the concatenated path elements. |
ashleymills | 0:3d62a105fd34 | 540 | * \param dstlen Length of buffer. |
ashleymills | 0:3d62a105fd34 | 541 | * \param outLen Pointer to integer, into which URI length will be placed. |
ashleymills | 0:3d62a105fd34 | 542 | * |
ashleymills | 0:3d62a105fd34 | 543 | * \return 0 on success, 1 on failure. \b outLen will contain the length of the concatenated elements. |
ashleymills | 0:3d62a105fd34 | 544 | */ |
ashleymills | 0:3d62a105fd34 | 545 | int CoapPDU::getURI(char *dst, int dstlen, int *outLen) { |
ashleymills | 0:3d62a105fd34 | 546 | if(outLen==NULL) { |
ashleymills | 0:3d62a105fd34 | 547 | DBG("Output length pointer is NULL"); |
ashleymills | 0:3d62a105fd34 | 548 | return 1; |
ashleymills | 0:3d62a105fd34 | 549 | } |
ashleymills | 0:3d62a105fd34 | 550 | |
ashleymills | 0:3d62a105fd34 | 551 | if(dst==NULL) { |
ashleymills | 0:3d62a105fd34 | 552 | DBG("NULL destination buffer"); |
ashleymills | 0:3d62a105fd34 | 553 | *outLen = 0; |
ashleymills | 0:3d62a105fd34 | 554 | return 1; |
ashleymills | 0:3d62a105fd34 | 555 | } |
ashleymills | 0:3d62a105fd34 | 556 | |
ashleymills | 0:3d62a105fd34 | 557 | // check destination space |
ashleymills | 0:3d62a105fd34 | 558 | if(dstlen<=0) { |
ashleymills | 0:3d62a105fd34 | 559 | *dst = 0x00; |
ashleymills | 0:3d62a105fd34 | 560 | *outLen = 0; |
ashleymills | 0:3d62a105fd34 | 561 | DBG("Destination buffer too small (0)!"); |
ashleymills | 0:3d62a105fd34 | 562 | return 1; |
ashleymills | 0:3d62a105fd34 | 563 | } |
ashleymills | 0:3d62a105fd34 | 564 | // check option count |
ashleymills | 0:3d62a105fd34 | 565 | if(_numOptions==0) { |
ashleymills | 0:3d62a105fd34 | 566 | *dst = 0x00; |
ashleymills | 0:3d62a105fd34 | 567 | *outLen = 0; |
ashleymills | 0:3d62a105fd34 | 568 | return 0; |
ashleymills | 0:3d62a105fd34 | 569 | } |
ashleymills | 0:3d62a105fd34 | 570 | // get options |
ashleymills | 0:3d62a105fd34 | 571 | CoapPDU::CoapOption *options = getOptions(); |
ashleymills | 0:3d62a105fd34 | 572 | if(options==NULL) { |
ashleymills | 0:3d62a105fd34 | 573 | *dst = 0x00; |
ashleymills | 0:3d62a105fd34 | 574 | *outLen = 0; |
ashleymills | 0:3d62a105fd34 | 575 | return 0; |
ashleymills | 0:3d62a105fd34 | 576 | } |
ashleymills | 0:3d62a105fd34 | 577 | // iterate over options to construct URI |
ashleymills | 0:3d62a105fd34 | 578 | CoapOption *o = NULL; |
ashleymills | 0:3d62a105fd34 | 579 | int bytesLeft = dstlen-1; // space for 0x00 |
ashleymills | 0:3d62a105fd34 | 580 | int oLen = 0; |
ashleymills | 0:3d62a105fd34 | 581 | // add slash at beggining |
ashleymills | 0:3d62a105fd34 | 582 | if(bytesLeft>=1) { |
ashleymills | 0:3d62a105fd34 | 583 | *dst = '/'; |
ashleymills | 0:3d62a105fd34 | 584 | dst++; |
ashleymills | 0:3d62a105fd34 | 585 | bytesLeft--; |
ashleymills | 0:3d62a105fd34 | 586 | } else { |
ashleymills | 0:3d62a105fd34 | 587 | DBG("No space for initial slash needed 1, got %d",bytesLeft); |
ashleymills | 0:3d62a105fd34 | 588 | return 1; |
ashleymills | 0:3d62a105fd34 | 589 | } |
pnysten | 2:d0d57af6c9df | 590 | |
pnysten | 2:d0d57af6c9df | 591 | char separator = '/'; |
pnysten | 2:d0d57af6c9df | 592 | int firstQuery = 1; |
pnysten | 2:d0d57af6c9df | 593 | |
ashleymills | 0:3d62a105fd34 | 594 | for(int i=0; i<_numOptions; i++) { |
ashleymills | 0:3d62a105fd34 | 595 | o = &options[i]; |
ashleymills | 0:3d62a105fd34 | 596 | oLen = o->optionValueLength; |
pnysten | 2:d0d57af6c9df | 597 | if(o->optionNumber==COAP_OPTION_URI_PATH||o->optionNumber==COAP_OPTION_URI_QUERY) { |
pnysten | 2:d0d57af6c9df | 598 | // if the option is a query, change the separator to & |
pnysten | 2:d0d57af6c9df | 599 | if(o->optionNumber==COAP_OPTION_URI_QUERY) { |
pnysten | 2:d0d57af6c9df | 600 | if(firstQuery) { |
pnysten | 2:d0d57af6c9df | 601 | // change previous '/' to a '?' |
pnysten | 2:d0d57af6c9df | 602 | *(dst-1) = '?'; |
pnysten | 2:d0d57af6c9df | 603 | firstQuery = 0; |
pnysten | 2:d0d57af6c9df | 604 | } |
pnysten | 2:d0d57af6c9df | 605 | separator = '&'; |
pnysten | 2:d0d57af6c9df | 606 | } |
pnysten | 2:d0d57af6c9df | 607 | |
ashleymills | 0:3d62a105fd34 | 608 | // check space |
ashleymills | 0:3d62a105fd34 | 609 | if(oLen>bytesLeft) { |
ashleymills | 0:3d62a105fd34 | 610 | DBG("Destination buffer too small, needed %d, got %d",oLen,bytesLeft); |
ashleymills | 0:3d62a105fd34 | 611 | return 1; |
ashleymills | 0:3d62a105fd34 | 612 | } |
ashleymills | 0:3d62a105fd34 | 613 | |
ashleymills | 0:3d62a105fd34 | 614 | // case where single '/' exists |
ashleymills | 0:3d62a105fd34 | 615 | if(oLen==1&&o->optionValuePointer[0]=='/') { |
ashleymills | 0:3d62a105fd34 | 616 | *dst = 0x00; |
ashleymills | 0:3d62a105fd34 | 617 | *outLen = 1; |
ashleymills | 0:3d62a105fd34 | 618 | return 0; |
ashleymills | 0:3d62a105fd34 | 619 | } |
ashleymills | 0:3d62a105fd34 | 620 | |
pnysten | 2:d0d57af6c9df | 621 | // copy URI path or query component |
ashleymills | 0:3d62a105fd34 | 622 | memcpy(dst,o->optionValuePointer,oLen); |
ashleymills | 0:3d62a105fd34 | 623 | |
ashleymills | 0:3d62a105fd34 | 624 | // adjust counters |
ashleymills | 0:3d62a105fd34 | 625 | dst += oLen; |
ashleymills | 0:3d62a105fd34 | 626 | bytesLeft -= oLen; |
ashleymills | 0:3d62a105fd34 | 627 | |
pnysten | 2:d0d57af6c9df | 628 | // add separator following (don't know at this point if another option is coming) |
ashleymills | 0:3d62a105fd34 | 629 | if(bytesLeft>=1) { |
pnysten | 2:d0d57af6c9df | 630 | *dst = separator; |
ashleymills | 0:3d62a105fd34 | 631 | dst++; |
ashleymills | 0:3d62a105fd34 | 632 | bytesLeft--; |
ashleymills | 0:3d62a105fd34 | 633 | } else { |
ashleymills | 0:3d62a105fd34 | 634 | DBG("Ran out of space after processing option"); |
ashleymills | 0:3d62a105fd34 | 635 | return 1; |
ashleymills | 0:3d62a105fd34 | 636 | } |
ashleymills | 0:3d62a105fd34 | 637 | } |
ashleymills | 0:3d62a105fd34 | 638 | } |
ashleymills | 0:3d62a105fd34 | 639 | |
pnysten | 2:d0d57af6c9df | 640 | // remove terminating separator |
ashleymills | 0:3d62a105fd34 | 641 | dst--; |
ashleymills | 0:3d62a105fd34 | 642 | bytesLeft++; |
ashleymills | 0:3d62a105fd34 | 643 | // add null terminating byte (always space since reserved) |
ashleymills | 0:3d62a105fd34 | 644 | *dst = 0x00; |
ashleymills | 0:3d62a105fd34 | 645 | *outLen = (dstlen-1)-bytesLeft; |
ashleymills | 0:3d62a105fd34 | 646 | return 0; |
ashleymills | 0:3d62a105fd34 | 647 | } |
ashleymills | 0:3d62a105fd34 | 648 | |
ashleymills | 0:3d62a105fd34 | 649 | /// Sets the CoAP version. |
ashleymills | 0:3d62a105fd34 | 650 | /** |
ashleymills | 0:3d62a105fd34 | 651 | * \param version CoAP version between 0 and 3. |
ashleymills | 0:3d62a105fd34 | 652 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 653 | */ |
ashleymills | 0:3d62a105fd34 | 654 | int CoapPDU::setVersion(uint8_t version) { |
ashleymills | 0:3d62a105fd34 | 655 | if(version>3) { |
ashleymills | 0:3d62a105fd34 | 656 | return 0; |
ashleymills | 0:3d62a105fd34 | 657 | } |
ashleymills | 0:3d62a105fd34 | 658 | |
ashleymills | 0:3d62a105fd34 | 659 | _pdu[0] &= 0x3F; |
ashleymills | 0:3d62a105fd34 | 660 | _pdu[0] |= (version << 6); |
ashleymills | 0:3d62a105fd34 | 661 | return 1; |
ashleymills | 0:3d62a105fd34 | 662 | } |
ashleymills | 0:3d62a105fd34 | 663 | |
ashleymills | 0:3d62a105fd34 | 664 | /** |
ashleymills | 0:3d62a105fd34 | 665 | * Gets the CoAP Version. |
ashleymills | 0:3d62a105fd34 | 666 | * @return The CoAP version between 0 and 3. |
ashleymills | 0:3d62a105fd34 | 667 | */ |
ashleymills | 0:3d62a105fd34 | 668 | uint8_t CoapPDU::getVersion() { |
ashleymills | 0:3d62a105fd34 | 669 | return (_pdu[0]&0xC0)>>6; |
ashleymills | 0:3d62a105fd34 | 670 | } |
ashleymills | 0:3d62a105fd34 | 671 | |
ashleymills | 0:3d62a105fd34 | 672 | /** |
ashleymills | 0:3d62a105fd34 | 673 | * Sets the type of this CoAP PDU. |
ashleymills | 0:3d62a105fd34 | 674 | * \param mt The type, one of: |
ashleymills | 0:3d62a105fd34 | 675 | * - COAP_CONFIRMABLE |
ashleymills | 0:3d62a105fd34 | 676 | * - COAP_NON_CONFIRMABLE |
ashleymills | 0:3d62a105fd34 | 677 | * - COAP_ACKNOWLEDGEMENT |
ashleymills | 0:3d62a105fd34 | 678 | * - COAP_RESET. |
ashleymills | 0:3d62a105fd34 | 679 | */ |
ashleymills | 0:3d62a105fd34 | 680 | void CoapPDU::setType(CoapPDU::Type mt) { |
ashleymills | 0:3d62a105fd34 | 681 | _pdu[0] &= 0xCF; |
ashleymills | 0:3d62a105fd34 | 682 | _pdu[0] |= mt; |
ashleymills | 0:3d62a105fd34 | 683 | } |
ashleymills | 0:3d62a105fd34 | 684 | |
ashleymills | 0:3d62a105fd34 | 685 | /// Returns the type of the PDU. |
ashleymills | 0:3d62a105fd34 | 686 | CoapPDU::Type CoapPDU::getType() { |
ashleymills | 0:3d62a105fd34 | 687 | return (CoapPDU::Type)(_pdu[0]&0x30); |
ashleymills | 0:3d62a105fd34 | 688 | } |
ashleymills | 0:3d62a105fd34 | 689 | |
ashleymills | 0:3d62a105fd34 | 690 | |
ashleymills | 0:3d62a105fd34 | 691 | /// Set the token length. |
ashleymills | 0:3d62a105fd34 | 692 | /** |
ashleymills | 0:3d62a105fd34 | 693 | * \param tokenLength The length of the token in bytes, between 0 and 8. |
ashleymills | 0:3d62a105fd34 | 694 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 695 | */ |
ashleymills | 0:3d62a105fd34 | 696 | int CoapPDU::setTokenLength(uint8_t tokenLength) { |
ashleymills | 0:3d62a105fd34 | 697 | if(tokenLength>8) |
ashleymills | 0:3d62a105fd34 | 698 | return 1; |
ashleymills | 0:3d62a105fd34 | 699 | |
ashleymills | 0:3d62a105fd34 | 700 | _pdu[0] &= 0xF0; |
ashleymills | 0:3d62a105fd34 | 701 | _pdu[0] |= tokenLength; |
ashleymills | 0:3d62a105fd34 | 702 | return 0; |
ashleymills | 0:3d62a105fd34 | 703 | } |
ashleymills | 0:3d62a105fd34 | 704 | |
ashleymills | 0:3d62a105fd34 | 705 | /// Returns the token length. |
ashleymills | 0:3d62a105fd34 | 706 | int CoapPDU::getTokenLength() { |
ashleymills | 0:3d62a105fd34 | 707 | return _pdu[0] & 0x0F; |
ashleymills | 0:3d62a105fd34 | 708 | } |
ashleymills | 0:3d62a105fd34 | 709 | |
ashleymills | 0:3d62a105fd34 | 710 | /// Returns a pointer to the PDU token. |
ashleymills | 0:3d62a105fd34 | 711 | uint8_t* CoapPDU::getTokenPointer() { |
ashleymills | 0:3d62a105fd34 | 712 | if(getTokenLength()==0) { |
ashleymills | 0:3d62a105fd34 | 713 | return NULL; |
ashleymills | 0:3d62a105fd34 | 714 | } |
ashleymills | 0:3d62a105fd34 | 715 | return &_pdu[4]; |
ashleymills | 0:3d62a105fd34 | 716 | } |
ashleymills | 0:3d62a105fd34 | 717 | |
ashleymills | 0:3d62a105fd34 | 718 | /// Set the PDU token to the supplied byte sequence. |
ashleymills | 0:3d62a105fd34 | 719 | /** |
ashleymills | 0:3d62a105fd34 | 720 | * This sets the PDU token to \b token and sets the token length to \b tokenLength. |
ashleymills | 0:3d62a105fd34 | 721 | * \param token A sequence of bytes representing the token. |
ashleymills | 0:3d62a105fd34 | 722 | * \param tokenLength The length of the byte sequence. |
ashleymills | 0:3d62a105fd34 | 723 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 724 | */ |
ashleymills | 0:3d62a105fd34 | 725 | int CoapPDU::setToken(uint8_t *token, uint8_t tokenLength) { |
ashleymills | 0:3d62a105fd34 | 726 | DBG("Setting token"); |
ashleymills | 0:3d62a105fd34 | 727 | if(token==NULL) { |
ashleymills | 0:3d62a105fd34 | 728 | DBG("NULL pointer passed as token reference"); |
ashleymills | 0:3d62a105fd34 | 729 | return 1; |
ashleymills | 0:3d62a105fd34 | 730 | } |
ashleymills | 0:3d62a105fd34 | 731 | |
ashleymills | 0:3d62a105fd34 | 732 | if(tokenLength==0) { |
ashleymills | 0:3d62a105fd34 | 733 | DBG("Token has zero length"); |
ashleymills | 0:3d62a105fd34 | 734 | return 1; |
ashleymills | 0:3d62a105fd34 | 735 | } |
ashleymills | 0:3d62a105fd34 | 736 | |
ashleymills | 0:3d62a105fd34 | 737 | // if tokenLength has not changed, just copy the new value |
ashleymills | 0:3d62a105fd34 | 738 | uint8_t oldTokenLength = getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 739 | if(tokenLength==oldTokenLength) { |
ashleymills | 0:3d62a105fd34 | 740 | memcpy((void*)&_pdu[4],token,tokenLength); |
ashleymills | 0:3d62a105fd34 | 741 | return 0; |
ashleymills | 0:3d62a105fd34 | 742 | } |
ashleymills | 0:3d62a105fd34 | 743 | |
ashleymills | 0:3d62a105fd34 | 744 | // otherwise compute new length of PDU |
ashleymills | 0:3d62a105fd34 | 745 | uint8_t oldPDULength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 746 | _pduLength -= oldTokenLength; |
ashleymills | 0:3d62a105fd34 | 747 | _pduLength += tokenLength; |
ashleymills | 0:3d62a105fd34 | 748 | |
ashleymills | 0:3d62a105fd34 | 749 | // now, have to shift old memory around, but shift direction depends |
ashleymills | 0:3d62a105fd34 | 750 | // whether pdu is now bigger or smaller |
ashleymills | 0:3d62a105fd34 | 751 | if(_pduLength>oldPDULength) { |
ashleymills | 0:3d62a105fd34 | 752 | // new PDU is bigger, need to allocate space for new PDU |
ashleymills | 0:3d62a105fd34 | 753 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 754 | uint8_t *newMemory = (uint8_t*)realloc(_pdu,_pduLength); |
ashleymills | 0:3d62a105fd34 | 755 | if(newMemory==NULL) { |
ashleymills | 0:3d62a105fd34 | 756 | // malloc failed |
ashleymills | 0:3d62a105fd34 | 757 | DBG("Failed to allocate memory for token"); |
ashleymills | 0:3d62a105fd34 | 758 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 759 | return 1; |
ashleymills | 0:3d62a105fd34 | 760 | } |
ashleymills | 0:3d62a105fd34 | 761 | _pdu = newMemory; |
ashleymills | 0:3d62a105fd34 | 762 | _bufferLength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 763 | } else { |
ashleymills | 0:3d62a105fd34 | 764 | // constructed from buffer, check space |
ashleymills | 0:3d62a105fd34 | 765 | if(_pduLength>_bufferLength) { |
ashleymills | 0:3d62a105fd34 | 766 | DBG("Buffer too small to contain token, needed %d, got %d.",_pduLength-oldPDULength,_bufferLength-oldPDULength); |
ashleymills | 0:3d62a105fd34 | 767 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 768 | return 1; |
ashleymills | 0:3d62a105fd34 | 769 | } |
ashleymills | 0:3d62a105fd34 | 770 | } |
ashleymills | 0:3d62a105fd34 | 771 | |
ashleymills | 0:3d62a105fd34 | 772 | // and then shift everything after token up to end of new PDU |
ashleymills | 0:3d62a105fd34 | 773 | // memory overlaps so do this manually so to avoid additional mallocs |
ashleymills | 0:3d62a105fd34 | 774 | int shiftOffset = _pduLength-oldPDULength; |
ashleymills | 0:3d62a105fd34 | 775 | int shiftAmount = _pduLength-tokenLength-COAP_HDR_SIZE; // everything after token |
ashleymills | 0:3d62a105fd34 | 776 | shiftPDUUp(shiftOffset,shiftAmount); |
ashleymills | 0:3d62a105fd34 | 777 | |
ashleymills | 0:3d62a105fd34 | 778 | // now copy the token into the new space and set official token length |
ashleymills | 0:3d62a105fd34 | 779 | memcpy((void*)&_pdu[4],token,tokenLength); |
ashleymills | 0:3d62a105fd34 | 780 | setTokenLength(tokenLength); |
ashleymills | 0:3d62a105fd34 | 781 | |
ashleymills | 0:3d62a105fd34 | 782 | // and return success |
ashleymills | 0:3d62a105fd34 | 783 | return 0; |
ashleymills | 0:3d62a105fd34 | 784 | } |
ashleymills | 0:3d62a105fd34 | 785 | |
ashleymills | 0:3d62a105fd34 | 786 | // new PDU is smaller, copy the new token value over the old one |
ashleymills | 0:3d62a105fd34 | 787 | memcpy((void*)&_pdu[4],token,tokenLength); |
ashleymills | 0:3d62a105fd34 | 788 | // and shift everything after the new token down |
ashleymills | 0:3d62a105fd34 | 789 | int startLocation = COAP_HDR_SIZE+tokenLength; |
ashleymills | 0:3d62a105fd34 | 790 | int shiftOffset = oldPDULength-_pduLength; |
ashleymills | 0:3d62a105fd34 | 791 | int shiftAmount = oldPDULength-oldTokenLength-COAP_HDR_SIZE; |
ashleymills | 0:3d62a105fd34 | 792 | shiftPDUDown(startLocation,shiftOffset,shiftAmount); |
ashleymills | 0:3d62a105fd34 | 793 | // then reduce size of buffer |
ashleymills | 0:3d62a105fd34 | 794 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 795 | uint8_t *newMemory = (uint8_t*)realloc(_pdu,_pduLength); |
ashleymills | 0:3d62a105fd34 | 796 | if(newMemory==NULL) { |
ashleymills | 0:3d62a105fd34 | 797 | // malloc failed, PDU in inconsistent state |
ashleymills | 0:3d62a105fd34 | 798 | DBG("Failed to shrink PDU for new token. PDU probably broken"); |
ashleymills | 0:3d62a105fd34 | 799 | return 1; |
ashleymills | 0:3d62a105fd34 | 800 | } |
ashleymills | 0:3d62a105fd34 | 801 | _pdu = newMemory; |
ashleymills | 0:3d62a105fd34 | 802 | _bufferLength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 803 | } |
ashleymills | 0:3d62a105fd34 | 804 | |
ashleymills | 0:3d62a105fd34 | 805 | // and officially set the new tokenLength |
ashleymills | 0:3d62a105fd34 | 806 | setTokenLength(tokenLength); |
ashleymills | 0:3d62a105fd34 | 807 | return 0; |
ashleymills | 0:3d62a105fd34 | 808 | } |
ashleymills | 0:3d62a105fd34 | 809 | |
pnysten | 2:d0d57af6c9df | 810 | long CoapPDU::getLongToken(){ |
pnysten | 2:d0d57af6c9df | 811 | |
pnysten | 2:d0d57af6c9df | 812 | long token=0; |
pnysten | 2:d0d57af6c9df | 813 | |
pnysten | 2:d0d57af6c9df | 814 | for (int i=0; i<getTokenLength(); ++i) { |
pnysten | 2:d0d57af6c9df | 815 | token+= getTokenPointer()[i]<<8*i; |
pnysten | 2:d0d57af6c9df | 816 | } |
pnysten | 2:d0d57af6c9df | 817 | return ntohl(token); |
pnysten | 2:d0d57af6c9df | 818 | } |
pnysten | 2:d0d57af6c9df | 819 | |
ashleymills | 0:3d62a105fd34 | 820 | /// Sets the CoAP response code |
ashleymills | 0:3d62a105fd34 | 821 | void CoapPDU::setCode(CoapPDU::Code code) { |
ashleymills | 0:3d62a105fd34 | 822 | _pdu[1] = code; |
ashleymills | 0:3d62a105fd34 | 823 | // there is a limited set of response codes |
ashleymills | 0:3d62a105fd34 | 824 | } |
ashleymills | 0:3d62a105fd34 | 825 | |
ashleymills | 0:3d62a105fd34 | 826 | /// Gets the CoAP response code |
ashleymills | 0:3d62a105fd34 | 827 | CoapPDU::Code CoapPDU::getCode() { |
ashleymills | 0:3d62a105fd34 | 828 | return (CoapPDU::Code)_pdu[1]; |
ashleymills | 0:3d62a105fd34 | 829 | } |
ashleymills | 1:5eec2844ad47 | 830 | |
ashleymills | 1:5eec2844ad47 | 831 | |
ashleymills | 1:5eec2844ad47 | 832 | /// Converts a http status code as an integer, to a CoAP code. |
ashleymills | 1:5eec2844ad47 | 833 | /** |
ashleymills | 1:5eec2844ad47 | 834 | * \param httpStatus the HTTP status code as an integer (e.g 200) |
ashleymills | 1:5eec2844ad47 | 835 | * \return The correct corresponding CoapPDU::Code on success, |
ashleymills | 1:5eec2844ad47 | 836 | * CoapPDU::COAP_UNDEFINED_CODE on failure. |
ashleymills | 1:5eec2844ad47 | 837 | */ |
ashleymills | 1:5eec2844ad47 | 838 | CoapPDU::Code CoapPDU::httpStatusToCode(int httpStatus) { |
ashleymills | 1:5eec2844ad47 | 839 | switch(httpStatus) { |
ashleymills | 1:5eec2844ad47 | 840 | case 1: |
ashleymills | 1:5eec2844ad47 | 841 | return CoapPDU::COAP_GET; |
ashleymills | 1:5eec2844ad47 | 842 | case 2: |
ashleymills | 1:5eec2844ad47 | 843 | return CoapPDU::COAP_POST; |
ashleymills | 1:5eec2844ad47 | 844 | case 3: |
ashleymills | 1:5eec2844ad47 | 845 | return CoapPDU::COAP_PUT; |
ashleymills | 1:5eec2844ad47 | 846 | case 4: |
ashleymills | 1:5eec2844ad47 | 847 | return CoapPDU::COAP_DELETE; |
ashleymills | 1:5eec2844ad47 | 848 | case 201: |
ashleymills | 1:5eec2844ad47 | 849 | return CoapPDU::COAP_CREATED; |
ashleymills | 1:5eec2844ad47 | 850 | case 202: |
ashleymills | 1:5eec2844ad47 | 851 | return CoapPDU::COAP_DELETED; |
ashleymills | 1:5eec2844ad47 | 852 | case 203: |
ashleymills | 1:5eec2844ad47 | 853 | return CoapPDU::COAP_VALID; |
ashleymills | 1:5eec2844ad47 | 854 | case 204: |
ashleymills | 1:5eec2844ad47 | 855 | return CoapPDU::COAP_CHANGED; |
ashleymills | 1:5eec2844ad47 | 856 | case 205: |
ashleymills | 1:5eec2844ad47 | 857 | return CoapPDU::COAP_CONTENT; |
ashleymills | 1:5eec2844ad47 | 858 | case 400: |
ashleymills | 1:5eec2844ad47 | 859 | return CoapPDU::COAP_BAD_REQUEST; |
ashleymills | 1:5eec2844ad47 | 860 | case 401: |
ashleymills | 1:5eec2844ad47 | 861 | return CoapPDU::COAP_UNAUTHORIZED; |
ashleymills | 1:5eec2844ad47 | 862 | case 402: |
ashleymills | 1:5eec2844ad47 | 863 | return CoapPDU::COAP_BAD_OPTION; |
ashleymills | 1:5eec2844ad47 | 864 | case 403: |
ashleymills | 1:5eec2844ad47 | 865 | return CoapPDU::COAP_FORBIDDEN; |
ashleymills | 1:5eec2844ad47 | 866 | case 404: |
ashleymills | 1:5eec2844ad47 | 867 | return CoapPDU::COAP_NOT_FOUND; |
ashleymills | 1:5eec2844ad47 | 868 | case 405: |
ashleymills | 1:5eec2844ad47 | 869 | return CoapPDU::COAP_METHOD_NOT_ALLOWED; |
ashleymills | 1:5eec2844ad47 | 870 | case 406: |
ashleymills | 1:5eec2844ad47 | 871 | return CoapPDU::COAP_NOT_ACCEPTABLE; |
ashleymills | 1:5eec2844ad47 | 872 | case 412: |
ashleymills | 1:5eec2844ad47 | 873 | return CoapPDU::COAP_PRECONDITION_FAILED; |
ashleymills | 1:5eec2844ad47 | 874 | case 413: |
ashleymills | 1:5eec2844ad47 | 875 | return CoapPDU::COAP_REQUEST_ENTITY_TOO_LARGE; |
ashleymills | 1:5eec2844ad47 | 876 | case 415: |
ashleymills | 1:5eec2844ad47 | 877 | return CoapPDU::COAP_UNSUPPORTED_CONTENT_FORMAT; |
ashleymills | 1:5eec2844ad47 | 878 | case 500: |
ashleymills | 1:5eec2844ad47 | 879 | return CoapPDU::COAP_INTERNAL_SERVER_ERROR; |
ashleymills | 1:5eec2844ad47 | 880 | case 501: |
ashleymills | 1:5eec2844ad47 | 881 | return CoapPDU::COAP_NOT_IMPLEMENTED; |
ashleymills | 1:5eec2844ad47 | 882 | case 502: |
ashleymills | 1:5eec2844ad47 | 883 | return CoapPDU::COAP_BAD_GATEWAY; |
ashleymills | 1:5eec2844ad47 | 884 | case 503: |
ashleymills | 1:5eec2844ad47 | 885 | return CoapPDU::COAP_SERVICE_UNAVAILABLE; |
ashleymills | 1:5eec2844ad47 | 886 | case 504: |
ashleymills | 1:5eec2844ad47 | 887 | return CoapPDU::COAP_GATEWAY_TIMEOUT; |
ashleymills | 1:5eec2844ad47 | 888 | case 505: |
ashleymills | 1:5eec2844ad47 | 889 | return CoapPDU::COAP_PROXYING_NOT_SUPPORTED; |
ashleymills | 1:5eec2844ad47 | 890 | default: |
ashleymills | 1:5eec2844ad47 | 891 | return CoapPDU::COAP_UNDEFINED_CODE; |
ashleymills | 1:5eec2844ad47 | 892 | } |
ashleymills | 1:5eec2844ad47 | 893 | } |
ashleymills | 1:5eec2844ad47 | 894 | |
ashleymills | 0:3d62a105fd34 | 895 | /// Set messageID to the supplied value. |
ashleymills | 0:3d62a105fd34 | 896 | /** |
ashleymills | 0:3d62a105fd34 | 897 | * \param messageID A 16bit message id. |
ashleymills | 0:3d62a105fd34 | 898 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 899 | */ |
ashleymills | 0:3d62a105fd34 | 900 | int CoapPDU::setMessageID(uint16_t messageID) { |
ashleymills | 0:3d62a105fd34 | 901 | // message ID is stored in network byte order |
ashleymills | 0:3d62a105fd34 | 902 | uint16_t networkOrder = htons(messageID); |
ashleymills | 0:3d62a105fd34 | 903 | // bytes 2 and 3 hold the ID |
ashleymills | 0:3d62a105fd34 | 904 | _pdu[2] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 905 | _pdu[2] |= (networkOrder >> 8); // MSB |
ashleymills | 0:3d62a105fd34 | 906 | _pdu[3] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 907 | _pdu[3] |= (networkOrder & 0x00FF); // LSB |
ashleymills | 0:3d62a105fd34 | 908 | return 0; |
ashleymills | 0:3d62a105fd34 | 909 | } |
ashleymills | 0:3d62a105fd34 | 910 | |
ashleymills | 0:3d62a105fd34 | 911 | /// Returns the 16 bit message ID of the PDU. |
ashleymills | 0:3d62a105fd34 | 912 | uint16_t CoapPDU::getMessageID() { |
ashleymills | 0:3d62a105fd34 | 913 | // mesasge ID is stored in network byteorder |
ashleymills | 0:3d62a105fd34 | 914 | uint16_t networkOrder = 0x0000; |
ashleymills | 0:3d62a105fd34 | 915 | networkOrder |= _pdu[2]; |
ashleymills | 0:3d62a105fd34 | 916 | networkOrder <<= 8; |
ashleymills | 0:3d62a105fd34 | 917 | networkOrder |= _pdu[3]; |
ashleymills | 0:3d62a105fd34 | 918 | return ntohs(networkOrder); |
ashleymills | 0:3d62a105fd34 | 919 | } |
ashleymills | 0:3d62a105fd34 | 920 | |
ashleymills | 0:3d62a105fd34 | 921 | /// Returns the length of the PDU. |
ashleymills | 0:3d62a105fd34 | 922 | int CoapPDU::getPDULength() { |
ashleymills | 0:3d62a105fd34 | 923 | return _pduLength; |
ashleymills | 0:3d62a105fd34 | 924 | } |
ashleymills | 0:3d62a105fd34 | 925 | |
ashleymills | 0:3d62a105fd34 | 926 | /// Return the number of options that the PDU has. |
ashleymills | 0:3d62a105fd34 | 927 | int CoapPDU::getNumOptions() { |
ashleymills | 0:3d62a105fd34 | 928 | return _numOptions; |
ashleymills | 0:3d62a105fd34 | 929 | } |
ashleymills | 0:3d62a105fd34 | 930 | |
ashleymills | 0:3d62a105fd34 | 931 | |
ashleymills | 0:3d62a105fd34 | 932 | /** |
ashleymills | 0:3d62a105fd34 | 933 | * This returns the options as a sequence of structs. |
ashleymills | 0:3d62a105fd34 | 934 | */ |
ashleymills | 0:3d62a105fd34 | 935 | CoapPDU::CoapOption* CoapPDU::getOptions() { |
ashleymills | 0:3d62a105fd34 | 936 | DBG("getOptions() called, %d options.",_numOptions); |
ashleymills | 0:3d62a105fd34 | 937 | |
ashleymills | 0:3d62a105fd34 | 938 | uint16_t optionDelta =0, optionNumber = 0, optionValueLength = 0; |
ashleymills | 0:3d62a105fd34 | 939 | int totalLength = 0; |
ashleymills | 0:3d62a105fd34 | 940 | |
ashleymills | 0:3d62a105fd34 | 941 | if(_numOptions==0) { |
ashleymills | 0:3d62a105fd34 | 942 | return NULL; |
ashleymills | 0:3d62a105fd34 | 943 | } |
ashleymills | 0:3d62a105fd34 | 944 | |
ashleymills | 0:3d62a105fd34 | 945 | // malloc space for options |
ashleymills | 0:3d62a105fd34 | 946 | CoapOption *options = (CoapOption*)malloc(_numOptions*sizeof(CoapOption)); |
ashleymills | 0:3d62a105fd34 | 947 | |
ashleymills | 0:3d62a105fd34 | 948 | // first option occurs after token |
ashleymills | 0:3d62a105fd34 | 949 | int optionPos = COAP_HDR_SIZE + getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 950 | |
ashleymills | 0:3d62a105fd34 | 951 | // walk over options and record information |
ashleymills | 0:3d62a105fd34 | 952 | for(int i=0; i<_numOptions; i++) { |
ashleymills | 0:3d62a105fd34 | 953 | // extract option details |
ashleymills | 0:3d62a105fd34 | 954 | optionDelta = getOptionDelta(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 955 | optionNumber += optionDelta; |
ashleymills | 0:3d62a105fd34 | 956 | optionValueLength = getOptionValueLength(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 957 | // compute total length |
ashleymills | 0:3d62a105fd34 | 958 | totalLength = 1; // mandatory header |
ashleymills | 0:3d62a105fd34 | 959 | totalLength += computeExtraBytes(optionDelta); |
ashleymills | 0:3d62a105fd34 | 960 | totalLength += computeExtraBytes(optionValueLength); |
ashleymills | 0:3d62a105fd34 | 961 | totalLength += optionValueLength; |
ashleymills | 0:3d62a105fd34 | 962 | // record option details |
ashleymills | 0:3d62a105fd34 | 963 | options[i].optionNumber = optionNumber; |
ashleymills | 0:3d62a105fd34 | 964 | options[i].optionDelta = optionDelta; |
ashleymills | 0:3d62a105fd34 | 965 | options[i].optionValueLength = optionValueLength; |
ashleymills | 0:3d62a105fd34 | 966 | options[i].totalLength = totalLength; |
ashleymills | 0:3d62a105fd34 | 967 | options[i].optionPointer = &_pdu[optionPos]; |
ashleymills | 0:3d62a105fd34 | 968 | options[i].optionValuePointer = &_pdu[optionPos+totalLength-optionValueLength]; |
ashleymills | 0:3d62a105fd34 | 969 | // move to next option |
ashleymills | 0:3d62a105fd34 | 970 | optionPos += totalLength; |
ashleymills | 0:3d62a105fd34 | 971 | } |
ashleymills | 0:3d62a105fd34 | 972 | |
ashleymills | 0:3d62a105fd34 | 973 | return options; |
ashleymills | 0:3d62a105fd34 | 974 | } |
ashleymills | 0:3d62a105fd34 | 975 | |
ashleymills | 0:3d62a105fd34 | 976 | /// Add an option to the PDU. |
ashleymills | 0:3d62a105fd34 | 977 | /** |
ashleymills | 0:3d62a105fd34 | 978 | * Unlike other implementations, options can be added in any order, and in-memory manipulation will be |
ashleymills | 0:3d62a105fd34 | 979 | * performed to ensure the correct ordering of options (they use a delta encoding of option numbers). |
ashleymills | 0:3d62a105fd34 | 980 | * Re-ordering memory like this incurs a small performance cost, so if you care about this, then you |
ashleymills | 0:3d62a105fd34 | 981 | * might want to add options in ascending order of option number. |
ashleymills | 0:3d62a105fd34 | 982 | * \param optionNumber The number of the option, see the enum CoapPDU::Option for shorthand notations. |
ashleymills | 0:3d62a105fd34 | 983 | * \param optionLength The length of the option payload in bytes. |
ashleymills | 0:3d62a105fd34 | 984 | * \param optionValue A pointer to the byte sequence that is the option payload (bytes will be copied). |
ashleymills | 0:3d62a105fd34 | 985 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 986 | */ |
ashleymills | 0:3d62a105fd34 | 987 | int CoapPDU::addOption(uint16_t insertedOptionNumber, uint16_t optionValueLength, uint8_t *optionValue) { |
ashleymills | 0:3d62a105fd34 | 988 | // this inserts the option in memory, and re-computes the deltas accordingly |
ashleymills | 0:3d62a105fd34 | 989 | // prevOption <-- insertionPosition |
ashleymills | 0:3d62a105fd34 | 990 | // nextOption |
ashleymills | 0:3d62a105fd34 | 991 | |
ashleymills | 0:3d62a105fd34 | 992 | // find insertion location and previous option number |
ashleymills | 0:3d62a105fd34 | 993 | uint16_t prevOptionNumber = 0; // option number of option before insertion point |
ashleymills | 0:3d62a105fd34 | 994 | int insertionPosition = findInsertionPosition(insertedOptionNumber,&prevOptionNumber); |
ashleymills | 0:3d62a105fd34 | 995 | DBG("inserting option at position %d, after option with number: %hu",insertionPosition,prevOptionNumber); |
ashleymills | 0:3d62a105fd34 | 996 | |
ashleymills | 0:3d62a105fd34 | 997 | // compute option delta length |
ashleymills | 0:3d62a105fd34 | 998 | uint16_t optionDelta = insertedOptionNumber-prevOptionNumber; |
ashleymills | 0:3d62a105fd34 | 999 | uint8_t extraDeltaBytes = computeExtraBytes(optionDelta); |
ashleymills | 0:3d62a105fd34 | 1000 | |
ashleymills | 0:3d62a105fd34 | 1001 | // compute option length length |
ashleymills | 0:3d62a105fd34 | 1002 | uint16_t extraLengthBytes = computeExtraBytes(optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1003 | |
ashleymills | 0:3d62a105fd34 | 1004 | // compute total length of option |
ashleymills | 0:3d62a105fd34 | 1005 | uint16_t optionLength = COAP_OPTION_HDR_BYTE + extraDeltaBytes + extraLengthBytes + optionValueLength; |
ashleymills | 0:3d62a105fd34 | 1006 | |
ashleymills | 0:3d62a105fd34 | 1007 | // if this is at the end of the PDU, job is done, just malloc and insert |
ashleymills | 0:3d62a105fd34 | 1008 | if(insertionPosition==_pduLength) { |
ashleymills | 0:3d62a105fd34 | 1009 | DBG("Inserting at end of PDU"); |
ashleymills | 0:3d62a105fd34 | 1010 | // optionNumber must be biggest added |
ashleymills | 0:3d62a105fd34 | 1011 | _maxAddedOptionNumber = insertedOptionNumber; |
ashleymills | 0:3d62a105fd34 | 1012 | |
ashleymills | 0:3d62a105fd34 | 1013 | // set new PDU length and allocate space for extra option |
ashleymills | 0:3d62a105fd34 | 1014 | int oldPDULength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 1015 | _pduLength += optionLength; |
ashleymills | 0:3d62a105fd34 | 1016 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 1017 | uint8_t *newMemory = (uint8_t*)realloc(_pdu,_pduLength); |
ashleymills | 0:3d62a105fd34 | 1018 | if(newMemory==NULL) { |
ashleymills | 0:3d62a105fd34 | 1019 | DBG("Failed to allocate memory for option."); |
ashleymills | 0:3d62a105fd34 | 1020 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 1021 | // malloc failed |
ashleymills | 0:3d62a105fd34 | 1022 | return 1; |
ashleymills | 0:3d62a105fd34 | 1023 | } |
ashleymills | 0:3d62a105fd34 | 1024 | _pdu = newMemory; |
ashleymills | 0:3d62a105fd34 | 1025 | _bufferLength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 1026 | } else { |
ashleymills | 0:3d62a105fd34 | 1027 | // constructed from buffer, check space |
ashleymills | 0:3d62a105fd34 | 1028 | if(_pduLength>_bufferLength) { |
ashleymills | 0:3d62a105fd34 | 1029 | DBG("Buffer too small for new option: needed %d, got %d.",_pduLength-oldPDULength,_bufferLength-oldPDULength); |
ashleymills | 0:3d62a105fd34 | 1030 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 1031 | return 1; |
ashleymills | 0:3d62a105fd34 | 1032 | } |
ashleymills | 0:3d62a105fd34 | 1033 | } |
ashleymills | 0:3d62a105fd34 | 1034 | |
ashleymills | 0:3d62a105fd34 | 1035 | // insert option at position |
ashleymills | 0:3d62a105fd34 | 1036 | insertOption(insertionPosition,optionDelta,optionValueLength,optionValue); |
ashleymills | 0:3d62a105fd34 | 1037 | _numOptions++; |
ashleymills | 0:3d62a105fd34 | 1038 | return 0; |
ashleymills | 0:3d62a105fd34 | 1039 | } |
ashleymills | 0:3d62a105fd34 | 1040 | // XXX could do 0xFF pdu payload case for changing of dynamically allocated application space SDUs < yeah, if you're insane |
ashleymills | 0:3d62a105fd34 | 1041 | |
ashleymills | 0:3d62a105fd34 | 1042 | // the next option might (probably) needs it's delta changing |
ashleymills | 0:3d62a105fd34 | 1043 | // I want to take this into account when allocating space for the new |
ashleymills | 0:3d62a105fd34 | 1044 | // option, to avoid having to do two mallocs, first get info about this option |
ashleymills | 0:3d62a105fd34 | 1045 | int nextOptionDelta = getOptionDelta(&_pdu[insertionPosition]); |
ashleymills | 0:3d62a105fd34 | 1046 | int nextOptionNumber = prevOptionNumber + nextOptionDelta; |
ashleymills | 0:3d62a105fd34 | 1047 | int nextOptionDeltaBytes = computeExtraBytes(nextOptionDelta); |
ashleymills | 0:3d62a105fd34 | 1048 | // recompute option delta, relative to inserted option |
ashleymills | 0:3d62a105fd34 | 1049 | int newNextOptionDelta = nextOptionNumber-insertedOptionNumber; |
ashleymills | 0:3d62a105fd34 | 1050 | int newNextOptionDeltaBytes = computeExtraBytes(newNextOptionDelta); |
ashleymills | 0:3d62a105fd34 | 1051 | // determine adjustment |
ashleymills | 0:3d62a105fd34 | 1052 | int optionDeltaAdjustment = newNextOptionDeltaBytes-nextOptionDeltaBytes; |
ashleymills | 0:3d62a105fd34 | 1053 | |
ashleymills | 0:3d62a105fd34 | 1054 | // create space for new option, including adjustment space for option delta |
ashleymills | 0:3d62a105fd34 | 1055 | DBG_PDU(); |
ashleymills | 0:3d62a105fd34 | 1056 | DBG("Creating space"); |
ashleymills | 0:3d62a105fd34 | 1057 | int mallocLength = optionLength+optionDeltaAdjustment; |
ashleymills | 0:3d62a105fd34 | 1058 | int oldPDULength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 1059 | _pduLength += mallocLength; |
ashleymills | 0:3d62a105fd34 | 1060 | |
ashleymills | 0:3d62a105fd34 | 1061 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 1062 | uint8_t *newMemory = (uint8_t*)realloc(_pdu,_pduLength); |
ashleymills | 0:3d62a105fd34 | 1063 | if(newMemory==NULL) { |
ashleymills | 0:3d62a105fd34 | 1064 | DBG("Failed to allocate memory for option"); |
ashleymills | 0:3d62a105fd34 | 1065 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 1066 | return 1; |
ashleymills | 0:3d62a105fd34 | 1067 | } |
ashleymills | 0:3d62a105fd34 | 1068 | _pdu = newMemory; |
ashleymills | 0:3d62a105fd34 | 1069 | _bufferLength = _pduLength; |
ashleymills | 0:3d62a105fd34 | 1070 | } else { |
ashleymills | 0:3d62a105fd34 | 1071 | // constructed from buffer, check space |
ashleymills | 0:3d62a105fd34 | 1072 | if(_pduLength>_bufferLength) { |
ashleymills | 0:3d62a105fd34 | 1073 | DBG("Buffer too small to contain option, needed %d, got %d.",_pduLength-oldPDULength,_bufferLength-oldPDULength); |
ashleymills | 0:3d62a105fd34 | 1074 | _pduLength = oldPDULength; |
ashleymills | 0:3d62a105fd34 | 1075 | return 1; |
ashleymills | 0:3d62a105fd34 | 1076 | } |
ashleymills | 0:3d62a105fd34 | 1077 | } |
ashleymills | 0:3d62a105fd34 | 1078 | |
ashleymills | 0:3d62a105fd34 | 1079 | // move remainder of PDU data up to create hole for new option |
ashleymills | 0:3d62a105fd34 | 1080 | DBG_PDU(); |
ashleymills | 0:3d62a105fd34 | 1081 | DBG("Shifting PDU."); |
ashleymills | 0:3d62a105fd34 | 1082 | shiftPDUUp(mallocLength,_pduLength-(insertionPosition+mallocLength)); |
ashleymills | 0:3d62a105fd34 | 1083 | DBG_PDU(); |
ashleymills | 0:3d62a105fd34 | 1084 | |
ashleymills | 0:3d62a105fd34 | 1085 | // adjust option delta bytes of following option |
ashleymills | 0:3d62a105fd34 | 1086 | // move the option header to the correct position |
ashleymills | 0:3d62a105fd34 | 1087 | int nextHeaderPos = insertionPosition+mallocLength; |
ashleymills | 0:3d62a105fd34 | 1088 | _pdu[nextHeaderPos-optionDeltaAdjustment] = _pdu[nextHeaderPos]; |
ashleymills | 0:3d62a105fd34 | 1089 | nextHeaderPos -= optionDeltaAdjustment; |
ashleymills | 0:3d62a105fd34 | 1090 | // and set the new value |
ashleymills | 0:3d62a105fd34 | 1091 | setOptionDelta(nextHeaderPos, newNextOptionDelta); |
ashleymills | 0:3d62a105fd34 | 1092 | |
ashleymills | 0:3d62a105fd34 | 1093 | // new option shorter |
ashleymills | 0:3d62a105fd34 | 1094 | // p p n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1095 | // p p n n x x x x x - |
ashleymills | 0:3d62a105fd34 | 1096 | // p p - n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1097 | // p p - - n x x x x x |
ashleymills | 0:3d62a105fd34 | 1098 | // p p o o n x x x x x |
ashleymills | 0:3d62a105fd34 | 1099 | |
ashleymills | 0:3d62a105fd34 | 1100 | // new option longer |
ashleymills | 0:3d62a105fd34 | 1101 | // p p n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1102 | // p p n n x x x x x - - - |
ashleymills | 0:3d62a105fd34 | 1103 | // p p - - - n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1104 | // p p - - n n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1105 | // p p o o n n n x x x x x |
ashleymills | 0:3d62a105fd34 | 1106 | |
ashleymills | 0:3d62a105fd34 | 1107 | // note, it can only ever be shorter or the same since if an option was inserted the delta got smaller |
ashleymills | 0:3d62a105fd34 | 1108 | // but I'll leave that little comment in, just to show that it would work even if the delta got bigger |
ashleymills | 0:3d62a105fd34 | 1109 | |
ashleymills | 0:3d62a105fd34 | 1110 | // now insert the new option into the gap |
ashleymills | 0:3d62a105fd34 | 1111 | DBGLX("Inserting new option..."); |
ashleymills | 0:3d62a105fd34 | 1112 | insertOption(insertionPosition,optionDelta,optionValueLength,optionValue); |
ashleymills | 0:3d62a105fd34 | 1113 | DBGX("done\r\n"); |
ashleymills | 0:3d62a105fd34 | 1114 | DBG_PDU(); |
ashleymills | 0:3d62a105fd34 | 1115 | |
ashleymills | 0:3d62a105fd34 | 1116 | // done, mark it with B! |
ashleymills | 0:3d62a105fd34 | 1117 | return 0; |
ashleymills | 0:3d62a105fd34 | 1118 | } |
ashleymills | 0:3d62a105fd34 | 1119 | |
ashleymills | 0:3d62a105fd34 | 1120 | /// Allocate space for a payload. |
ashleymills | 0:3d62a105fd34 | 1121 | /** |
ashleymills | 0:3d62a105fd34 | 1122 | * For dynamically constructed PDUs, this will allocate space for a payload in the object |
ashleymills | 0:3d62a105fd34 | 1123 | * and return a pointer to it. If the PDU was constructed from a buffer, this doesn't |
ashleymills | 0:3d62a105fd34 | 1124 | * malloc anything, it just changes the _pduLength and returns the payload pointer. |
ashleymills | 0:3d62a105fd34 | 1125 | * |
ashleymills | 0:3d62a105fd34 | 1126 | * \note The pointer returned points into the PDU buffer. |
ashleymills | 0:3d62a105fd34 | 1127 | * \param len The length of the payload buffer to allocate. |
ashleymills | 0:3d62a105fd34 | 1128 | * \return Either a pointer to the payload buffer, or NULL if there wasn't enough space / allocation failed. |
ashleymills | 0:3d62a105fd34 | 1129 | */ |
ashleymills | 0:3d62a105fd34 | 1130 | uint8_t* CoapPDU::mallocPayload(int len) { |
ashleymills | 0:3d62a105fd34 | 1131 | DBG("Entering mallocPayload"); |
ashleymills | 0:3d62a105fd34 | 1132 | // sanity checks |
ashleymills | 0:3d62a105fd34 | 1133 | if(len==0) { |
ashleymills | 0:3d62a105fd34 | 1134 | DBG("Cannot allocate a zero length payload"); |
ashleymills | 0:3d62a105fd34 | 1135 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1136 | } |
ashleymills | 0:3d62a105fd34 | 1137 | |
ashleymills | 0:3d62a105fd34 | 1138 | // further sanity |
ashleymills | 0:3d62a105fd34 | 1139 | if(len==_payloadLength) { |
ashleymills | 0:3d62a105fd34 | 1140 | DBG("Space for payload of specified length already exists"); |
ashleymills | 0:3d62a105fd34 | 1141 | if(_payloadPointer==NULL) { |
ashleymills | 0:3d62a105fd34 | 1142 | DBG("Garbage PDU. Payload length is %d, but existing _payloadPointer NULL",_payloadLength); |
ashleymills | 0:3d62a105fd34 | 1143 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1144 | } |
ashleymills | 0:3d62a105fd34 | 1145 | return _payloadPointer; |
ashleymills | 0:3d62a105fd34 | 1146 | } |
ashleymills | 0:3d62a105fd34 | 1147 | |
ashleymills | 0:3d62a105fd34 | 1148 | DBG("_bufferLength: %d, _pduLength: %d, _payloadLength: %d",_bufferLength,_pduLength,_payloadLength); |
ashleymills | 0:3d62a105fd34 | 1149 | |
ashleymills | 0:3d62a105fd34 | 1150 | // might be making payload bigger (including bigger than 0) or smaller |
ashleymills | 0:3d62a105fd34 | 1151 | int markerSpace = 1; |
ashleymills | 0:3d62a105fd34 | 1152 | int payloadSpace = len; |
ashleymills | 0:3d62a105fd34 | 1153 | // is this a resizing? |
ashleymills | 0:3d62a105fd34 | 1154 | if(_payloadLength!=0) { |
ashleymills | 0:3d62a105fd34 | 1155 | // marker already exists |
ashleymills | 0:3d62a105fd34 | 1156 | markerSpace = 0; |
ashleymills | 0:3d62a105fd34 | 1157 | // compute new payload length (can be negative if shrinking payload) |
ashleymills | 0:3d62a105fd34 | 1158 | payloadSpace = len-_payloadLength; |
ashleymills | 0:3d62a105fd34 | 1159 | } |
ashleymills | 0:3d62a105fd34 | 1160 | |
ashleymills | 0:3d62a105fd34 | 1161 | // make space for payload (and payload marker if necessary) |
ashleymills | 0:3d62a105fd34 | 1162 | int newLen = _pduLength+payloadSpace+markerSpace; |
ashleymills | 0:3d62a105fd34 | 1163 | if(!_constructedFromBuffer) { |
ashleymills | 0:3d62a105fd34 | 1164 | uint8_t* newPDU = (uint8_t*)realloc(_pdu,newLen); |
ashleymills | 0:3d62a105fd34 | 1165 | if(newPDU==NULL) { |
ashleymills | 0:3d62a105fd34 | 1166 | DBG("Cannot allocate (or shrink) space for payload"); |
ashleymills | 0:3d62a105fd34 | 1167 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1168 | } |
ashleymills | 0:3d62a105fd34 | 1169 | _pdu = newPDU; |
ashleymills | 0:3d62a105fd34 | 1170 | _bufferLength = newLen; |
ashleymills | 0:3d62a105fd34 | 1171 | } else { |
ashleymills | 0:3d62a105fd34 | 1172 | // constructed from buffer, check space |
ashleymills | 0:3d62a105fd34 | 1173 | DBG("newLen: %d, _bufferLength: %d",newLen,_bufferLength); |
ashleymills | 0:3d62a105fd34 | 1174 | if(newLen>_bufferLength) { |
ashleymills | 0:3d62a105fd34 | 1175 | DBG("Buffer too small to contain desired payload, needed %d, got %d.",newLen-_pduLength,_bufferLength-_pduLength); |
ashleymills | 0:3d62a105fd34 | 1176 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1177 | } |
ashleymills | 0:3d62a105fd34 | 1178 | } |
ashleymills | 0:3d62a105fd34 | 1179 | |
ashleymills | 0:3d62a105fd34 | 1180 | // deal with fresh allocation case separately |
ashleymills | 0:3d62a105fd34 | 1181 | if(_payloadPointer==NULL) { |
ashleymills | 0:3d62a105fd34 | 1182 | // set payload marker |
ashleymills | 0:3d62a105fd34 | 1183 | _pdu[_pduLength] = 0xFF; |
ashleymills | 0:3d62a105fd34 | 1184 | // payload at end of old PDU |
ashleymills | 0:3d62a105fd34 | 1185 | _payloadPointer = &_pdu[_pduLength+1]; |
ashleymills | 0:3d62a105fd34 | 1186 | _pduLength = newLen; |
ashleymills | 0:3d62a105fd34 | 1187 | _payloadLength = len; |
ashleymills | 0:3d62a105fd34 | 1188 | return _payloadPointer; |
ashleymills | 0:3d62a105fd34 | 1189 | } |
ashleymills | 0:3d62a105fd34 | 1190 | |
ashleymills | 0:3d62a105fd34 | 1191 | // otherwise, just adjust length of PDU |
ashleymills | 0:3d62a105fd34 | 1192 | _pduLength = newLen; |
ashleymills | 0:3d62a105fd34 | 1193 | _payloadLength = len; |
ashleymills | 0:3d62a105fd34 | 1194 | DBG("Leaving mallocPayload"); |
ashleymills | 0:3d62a105fd34 | 1195 | return _payloadPointer; |
ashleymills | 0:3d62a105fd34 | 1196 | } |
ashleymills | 0:3d62a105fd34 | 1197 | |
ashleymills | 0:3d62a105fd34 | 1198 | /// Set the payload to the byte sequence specified. Allocates memory in dynamic PDU if necessary. |
ashleymills | 0:3d62a105fd34 | 1199 | /** |
ashleymills | 0:3d62a105fd34 | 1200 | * This will set the payload to \b payload. It will allocate memory in the case where the PDU was |
ashleymills | 0:3d62a105fd34 | 1201 | * constructed without an external buffer. |
ashleymills | 0:3d62a105fd34 | 1202 | * |
ashleymills | 0:3d62a105fd34 | 1203 | * This will fail either if the fixed buffer isn't big enough, or if memory could not be allocated |
ashleymills | 0:3d62a105fd34 | 1204 | * in the non-external-buffer case. |
ashleymills | 0:3d62a105fd34 | 1205 | * |
ashleymills | 0:3d62a105fd34 | 1206 | * \param payload Pointer to payload byte sequence. |
ashleymills | 0:3d62a105fd34 | 1207 | * \param len Length of payload byte sequence. |
ashleymills | 0:3d62a105fd34 | 1208 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 1209 | */ |
pnysten | 2:d0d57af6c9df | 1210 | |
ashleymills | 0:3d62a105fd34 | 1211 | int CoapPDU::setPayload(uint8_t *payload, int len) { |
ashleymills | 0:3d62a105fd34 | 1212 | if(payload==NULL) { |
ashleymills | 0:3d62a105fd34 | 1213 | DBG("NULL payload pointer."); |
ashleymills | 0:3d62a105fd34 | 1214 | return 1; |
ashleymills | 0:3d62a105fd34 | 1215 | } |
ashleymills | 0:3d62a105fd34 | 1216 | |
ashleymills | 0:3d62a105fd34 | 1217 | uint8_t *payloadPointer = mallocPayload(len); |
ashleymills | 0:3d62a105fd34 | 1218 | if(payloadPointer==NULL) { |
ashleymills | 0:3d62a105fd34 | 1219 | DBG("Allocation of payload failed"); |
ashleymills | 0:3d62a105fd34 | 1220 | return 1; |
ashleymills | 0:3d62a105fd34 | 1221 | } |
ashleymills | 0:3d62a105fd34 | 1222 | |
ashleymills | 0:3d62a105fd34 | 1223 | // copy payload contents |
ashleymills | 0:3d62a105fd34 | 1224 | memcpy(payloadPointer,payload,len); |
ashleymills | 0:3d62a105fd34 | 1225 | |
ashleymills | 0:3d62a105fd34 | 1226 | return 0; |
ashleymills | 0:3d62a105fd34 | 1227 | } |
ashleymills | 0:3d62a105fd34 | 1228 | |
pnysten | 2:d0d57af6c9df | 1229 | |
pnysten | 2:d0d57af6c9df | 1230 | |
ashleymills | 0:3d62a105fd34 | 1231 | /// Returns a pointer to the payload buffer. |
ashleymills | 0:3d62a105fd34 | 1232 | uint8_t* CoapPDU::getPayloadPointer() { |
ashleymills | 0:3d62a105fd34 | 1233 | return _payloadPointer; |
ashleymills | 0:3d62a105fd34 | 1234 | } |
ashleymills | 0:3d62a105fd34 | 1235 | |
ashleymills | 0:3d62a105fd34 | 1236 | /// Gets the length of the payload buffer. |
ashleymills | 0:3d62a105fd34 | 1237 | int CoapPDU::getPayloadLength() { |
ashleymills | 0:3d62a105fd34 | 1238 | return _payloadLength; |
ashleymills | 0:3d62a105fd34 | 1239 | } |
ashleymills | 0:3d62a105fd34 | 1240 | |
ashleymills | 0:3d62a105fd34 | 1241 | /// Returns a pointer to a buffer which is a copy of the payload buffer (dynamically allocated). |
ashleymills | 0:3d62a105fd34 | 1242 | uint8_t* CoapPDU::getPayloadCopy() { |
ashleymills | 0:3d62a105fd34 | 1243 | if(_payloadLength==0) { |
ashleymills | 0:3d62a105fd34 | 1244 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1245 | } |
ashleymills | 0:3d62a105fd34 | 1246 | |
ashleymills | 0:3d62a105fd34 | 1247 | // malloc space for copy |
ashleymills | 0:3d62a105fd34 | 1248 | uint8_t *payload = (uint8_t*)malloc(_payloadLength); |
ashleymills | 0:3d62a105fd34 | 1249 | if(payload==NULL) { |
ashleymills | 0:3d62a105fd34 | 1250 | DBG("Unable to allocate memory for payload"); |
ashleymills | 0:3d62a105fd34 | 1251 | return NULL; |
ashleymills | 0:3d62a105fd34 | 1252 | } |
ashleymills | 0:3d62a105fd34 | 1253 | |
ashleymills | 0:3d62a105fd34 | 1254 | // copy and return |
ashleymills | 0:3d62a105fd34 | 1255 | memcpy(payload,_payloadPointer,_payloadLength); |
ashleymills | 0:3d62a105fd34 | 1256 | return payload; |
ashleymills | 0:3d62a105fd34 | 1257 | } |
ashleymills | 0:3d62a105fd34 | 1258 | |
ashleymills | 0:3d62a105fd34 | 1259 | /// Shorthand for setting the content-format option. |
ashleymills | 0:3d62a105fd34 | 1260 | /** |
ashleymills | 0:3d62a105fd34 | 1261 | * Sets the content-format to the specified value (adds an option). |
ashleymills | 0:3d62a105fd34 | 1262 | * \param format The content format, one of: |
ashleymills | 0:3d62a105fd34 | 1263 | * |
ashleymills | 0:3d62a105fd34 | 1264 | * - COAP_CONTENT_FORMAT_TEXT_PLAIN |
ashleymills | 0:3d62a105fd34 | 1265 | * - COAP_CONTENT_FORMAT_APP_LINK |
ashleymills | 0:3d62a105fd34 | 1266 | * - COAP_CONTENT_FORMAT_APP_XML |
ashleymills | 0:3d62a105fd34 | 1267 | * - COAP_CONTENT_FORMAT_APP_OCTET |
ashleymills | 0:3d62a105fd34 | 1268 | * - COAP_CONTENT_FORMAT_APP_EXI |
ashleymills | 0:3d62a105fd34 | 1269 | * - COAP_CONTENT_FORMAT_APP_JSON |
ashleymills | 0:3d62a105fd34 | 1270 | * |
ashleymills | 0:3d62a105fd34 | 1271 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 1272 | */ |
ashleymills | 0:3d62a105fd34 | 1273 | int CoapPDU::setContentFormat(CoapPDU::ContentFormat format) { |
ashleymills | 0:3d62a105fd34 | 1274 | if(format==0) { |
ashleymills | 0:3d62a105fd34 | 1275 | // minimal representation means null option value |
ashleymills | 0:3d62a105fd34 | 1276 | if(addOption(CoapPDU::COAP_OPTION_CONTENT_FORMAT,0,NULL)!=0) { |
ashleymills | 0:3d62a105fd34 | 1277 | DBG("Error setting content format"); |
ashleymills | 0:3d62a105fd34 | 1278 | return 1; |
ashleymills | 0:3d62a105fd34 | 1279 | } |
ashleymills | 0:3d62a105fd34 | 1280 | return 0; |
ashleymills | 0:3d62a105fd34 | 1281 | } |
ashleymills | 0:3d62a105fd34 | 1282 | |
ashleymills | 0:3d62a105fd34 | 1283 | uint8_t c[2]; |
ashleymills | 0:3d62a105fd34 | 1284 | |
ashleymills | 0:3d62a105fd34 | 1285 | // just use 1 byte if can do it |
ashleymills | 0:3d62a105fd34 | 1286 | if(format<256) { |
ashleymills | 0:3d62a105fd34 | 1287 | c[0] = format; |
ashleymills | 0:3d62a105fd34 | 1288 | if(addOption(CoapPDU::COAP_OPTION_CONTENT_FORMAT,1,c)!=0) { |
ashleymills | 0:3d62a105fd34 | 1289 | DBG("Error setting content format"); |
ashleymills | 0:3d62a105fd34 | 1290 | return 1; |
ashleymills | 0:3d62a105fd34 | 1291 | } |
ashleymills | 0:3d62a105fd34 | 1292 | return 0; |
ashleymills | 0:3d62a105fd34 | 1293 | } |
ashleymills | 0:3d62a105fd34 | 1294 | |
ashleymills | 0:3d62a105fd34 | 1295 | uint16_t networkOrder = htons(format); |
ashleymills | 0:3d62a105fd34 | 1296 | c[0] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1297 | c[0] |= (networkOrder >> 8); // MSB |
ashleymills | 0:3d62a105fd34 | 1298 | c[1] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1299 | c[1] |= (networkOrder & 0x00FF); // LSB |
ashleymills | 0:3d62a105fd34 | 1300 | if(addOption(CoapPDU::COAP_OPTION_CONTENT_FORMAT,2,c)!=0) { |
ashleymills | 0:3d62a105fd34 | 1301 | DBG("Error setting content format"); |
ashleymills | 0:3d62a105fd34 | 1302 | return 1; |
ashleymills | 0:3d62a105fd34 | 1303 | } |
ashleymills | 0:3d62a105fd34 | 1304 | return 0; |
ashleymills | 0:3d62a105fd34 | 1305 | } |
ashleymills | 0:3d62a105fd34 | 1306 | |
ashleymills | 0:3d62a105fd34 | 1307 | /// PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE |
ashleymills | 0:3d62a105fd34 | 1308 | /// PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE |
ashleymills | 0:3d62a105fd34 | 1309 | |
ashleymills | 0:3d62a105fd34 | 1310 | /// Moves a block of bytes to end of PDU from given offset. |
ashleymills | 0:3d62a105fd34 | 1311 | /** |
ashleymills | 0:3d62a105fd34 | 1312 | * This moves the block of bytes _pdu[_pduLength-1-shiftOffset-shiftAmount] ... _pdu[_pduLength-1-shiftOffset] |
ashleymills | 0:3d62a105fd34 | 1313 | * to the end of the PDU. |
ashleymills | 0:3d62a105fd34 | 1314 | * \param shiftOffset End of block to move, relative to end of PDU (-1). |
ashleymills | 0:3d62a105fd34 | 1315 | * \param shiftAmount Length of block to move. |
ashleymills | 0:3d62a105fd34 | 1316 | */ |
ashleymills | 0:3d62a105fd34 | 1317 | void CoapPDU::shiftPDUUp(int shiftOffset, int shiftAmount) { |
ashleymills | 0:3d62a105fd34 | 1318 | DBG("shiftOffset: %d, shiftAmount: %d",shiftOffset,shiftAmount); |
ashleymills | 0:3d62a105fd34 | 1319 | int destPointer = _pduLength-1; |
ashleymills | 0:3d62a105fd34 | 1320 | int srcPointer = destPointer-shiftOffset; |
ashleymills | 0:3d62a105fd34 | 1321 | while(shiftAmount--) { |
ashleymills | 0:3d62a105fd34 | 1322 | _pdu[destPointer] = _pdu[srcPointer]; |
ashleymills | 0:3d62a105fd34 | 1323 | destPointer--; |
ashleymills | 0:3d62a105fd34 | 1324 | srcPointer--; |
ashleymills | 0:3d62a105fd34 | 1325 | } |
ashleymills | 0:3d62a105fd34 | 1326 | } |
ashleymills | 0:3d62a105fd34 | 1327 | |
ashleymills | 0:3d62a105fd34 | 1328 | /// Moves a block of bytes down a specified number of steps. |
ashleymills | 0:3d62a105fd34 | 1329 | /** |
ashleymills | 0:3d62a105fd34 | 1330 | * Moves the block of bytes _pdu[startLocation+shiftOffset] ... _pdu[startLocation+shiftOffset+shiftAmount] |
ashleymills | 0:3d62a105fd34 | 1331 | * down to \b startLocation. |
ashleymills | 0:3d62a105fd34 | 1332 | * \param startLocation Index where to shift the block to. |
ashleymills | 0:3d62a105fd34 | 1333 | * \param shiftOffset Where the block starts, relative to start index. |
ashleymills | 0:3d62a105fd34 | 1334 | * \param shiftAmount Length of block to shift. |
ashleymills | 0:3d62a105fd34 | 1335 | */ |
ashleymills | 0:3d62a105fd34 | 1336 | void CoapPDU::shiftPDUDown(int startLocation, int shiftOffset, int shiftAmount) { |
ashleymills | 0:3d62a105fd34 | 1337 | DBG("startLocation: %d, shiftOffset: %d, shiftAmount: %d",startLocation,shiftOffset,shiftAmount); |
ashleymills | 0:3d62a105fd34 | 1338 | int srcPointer = startLocation+shiftOffset; |
ashleymills | 0:3d62a105fd34 | 1339 | while(shiftAmount--) { |
ashleymills | 0:3d62a105fd34 | 1340 | _pdu[startLocation] = _pdu[srcPointer]; |
ashleymills | 0:3d62a105fd34 | 1341 | startLocation++; |
ashleymills | 0:3d62a105fd34 | 1342 | srcPointer++; |
ashleymills | 0:3d62a105fd34 | 1343 | } |
ashleymills | 0:3d62a105fd34 | 1344 | } |
ashleymills | 0:3d62a105fd34 | 1345 | |
ashleymills | 0:3d62a105fd34 | 1346 | /// Gets the payload length of an option. |
ashleymills | 0:3d62a105fd34 | 1347 | /** |
ashleymills | 0:3d62a105fd34 | 1348 | * \param option Pointer to location of option in PDU. |
ashleymills | 0:3d62a105fd34 | 1349 | * \return The 16 bit option-payload length. |
ashleymills | 0:3d62a105fd34 | 1350 | */ |
ashleymills | 0:3d62a105fd34 | 1351 | uint16_t CoapPDU::getOptionValueLength(uint8_t *option) { |
ashleymills | 0:3d62a105fd34 | 1352 | uint16_t delta = (option[0] & 0xF0) >> 4; |
ashleymills | 0:3d62a105fd34 | 1353 | uint16_t length = (option[0] & 0x0F); |
ashleymills | 0:3d62a105fd34 | 1354 | // no extra bytes |
ashleymills | 0:3d62a105fd34 | 1355 | if(length<13) { |
ashleymills | 0:3d62a105fd34 | 1356 | return length; |
ashleymills | 0:3d62a105fd34 | 1357 | } |
ashleymills | 0:3d62a105fd34 | 1358 | |
ashleymills | 0:3d62a105fd34 | 1359 | // extra bytes skip header |
ashleymills | 0:3d62a105fd34 | 1360 | int offset = 1; |
ashleymills | 0:3d62a105fd34 | 1361 | // skip extra option delta bytes |
ashleymills | 0:3d62a105fd34 | 1362 | if(delta==13) { |
ashleymills | 0:3d62a105fd34 | 1363 | offset++; |
ashleymills | 0:3d62a105fd34 | 1364 | } else if(delta==14) { |
ashleymills | 0:3d62a105fd34 | 1365 | offset+=2; |
ashleymills | 0:3d62a105fd34 | 1366 | } |
ashleymills | 0:3d62a105fd34 | 1367 | |
ashleymills | 0:3d62a105fd34 | 1368 | // process length |
ashleymills | 0:3d62a105fd34 | 1369 | if(length==13) { |
ashleymills | 0:3d62a105fd34 | 1370 | return (option[offset]+13); |
ashleymills | 0:3d62a105fd34 | 1371 | } else { |
ashleymills | 0:3d62a105fd34 | 1372 | // need to convert to host order |
ashleymills | 0:3d62a105fd34 | 1373 | uint16_t networkOrder = 0x0000; |
ashleymills | 0:3d62a105fd34 | 1374 | networkOrder |= option[offset++]; |
ashleymills | 0:3d62a105fd34 | 1375 | networkOrder <<= 8; |
ashleymills | 0:3d62a105fd34 | 1376 | networkOrder |= option[offset]; |
ashleymills | 0:3d62a105fd34 | 1377 | uint16_t hostOrder = ntohs(networkOrder); |
ashleymills | 0:3d62a105fd34 | 1378 | return hostOrder+269; |
ashleymills | 0:3d62a105fd34 | 1379 | } |
ashleymills | 0:3d62a105fd34 | 1380 | |
ashleymills | 0:3d62a105fd34 | 1381 | } |
ashleymills | 0:3d62a105fd34 | 1382 | |
ashleymills | 0:3d62a105fd34 | 1383 | /// Gets the delta of an option. |
ashleymills | 0:3d62a105fd34 | 1384 | /** |
ashleymills | 0:3d62a105fd34 | 1385 | * \param option Pointer to location of option in PDU. |
ashleymills | 0:3d62a105fd34 | 1386 | * \return The 16 bit delta. |
ashleymills | 0:3d62a105fd34 | 1387 | */ |
ashleymills | 0:3d62a105fd34 | 1388 | uint16_t CoapPDU::getOptionDelta(uint8_t *option) { |
ashleymills | 0:3d62a105fd34 | 1389 | uint16_t delta = (option[0] & 0xF0) >> 4; |
ashleymills | 0:3d62a105fd34 | 1390 | if(delta<13) { |
ashleymills | 0:3d62a105fd34 | 1391 | return delta; |
ashleymills | 0:3d62a105fd34 | 1392 | } else if(delta==13) { |
ashleymills | 0:3d62a105fd34 | 1393 | // single byte option delta |
ashleymills | 0:3d62a105fd34 | 1394 | return (option[1]+13); |
ashleymills | 0:3d62a105fd34 | 1395 | } else if(delta==14) { |
ashleymills | 0:3d62a105fd34 | 1396 | // double byte option delta |
ashleymills | 0:3d62a105fd34 | 1397 | // need to convert to host order |
ashleymills | 0:3d62a105fd34 | 1398 | uint16_t networkOrder = 0x0000; |
ashleymills | 0:3d62a105fd34 | 1399 | networkOrder |= option[1]; |
ashleymills | 0:3d62a105fd34 | 1400 | networkOrder <<= 8; |
ashleymills | 0:3d62a105fd34 | 1401 | networkOrder |= option[2]; |
ashleymills | 0:3d62a105fd34 | 1402 | uint16_t hostOrder = ntohs(networkOrder); |
ashleymills | 0:3d62a105fd34 | 1403 | return hostOrder+269; |
ashleymills | 0:3d62a105fd34 | 1404 | } else { |
ashleymills | 0:3d62a105fd34 | 1405 | // should only ever occur in payload marker |
ashleymills | 0:3d62a105fd34 | 1406 | return delta; |
ashleymills | 0:3d62a105fd34 | 1407 | } |
ashleymills | 0:3d62a105fd34 | 1408 | } |
ashleymills | 0:3d62a105fd34 | 1409 | |
ashleymills | 0:3d62a105fd34 | 1410 | /// Finds the insertion position in the current list of options for the specified option. |
ashleymills | 0:3d62a105fd34 | 1411 | /** |
ashleymills | 0:3d62a105fd34 | 1412 | * \param optionNumber The option's number. |
ashleymills | 0:3d62a105fd34 | 1413 | * \param prevOptionNumber A pointer to a uint16_t which will store the option number of the option previous |
ashleymills | 0:3d62a105fd34 | 1414 | * to the insertion point. |
ashleymills | 0:3d62a105fd34 | 1415 | * \return 0 on success, 1 on failure. \b prevOptionNumber will contain the option number of the option |
ashleymills | 0:3d62a105fd34 | 1416 | * before the insertion position (for example 0 if no options have been inserted). |
ashleymills | 0:3d62a105fd34 | 1417 | */ |
ashleymills | 0:3d62a105fd34 | 1418 | int CoapPDU::findInsertionPosition(uint16_t optionNumber, uint16_t *prevOptionNumber) { |
ashleymills | 0:3d62a105fd34 | 1419 | // zero this for safety |
ashleymills | 0:3d62a105fd34 | 1420 | *prevOptionNumber = 0x00; |
ashleymills | 0:3d62a105fd34 | 1421 | |
ashleymills | 0:3d62a105fd34 | 1422 | DBG("_pduLength: %d",_pduLength); |
ashleymills | 0:3d62a105fd34 | 1423 | |
ashleymills | 0:3d62a105fd34 | 1424 | // if option is bigger than any currently stored, it goes at the end |
ashleymills | 0:3d62a105fd34 | 1425 | // this includes the case that no option has yet been added |
ashleymills | 0:3d62a105fd34 | 1426 | if( (optionNumber >= _maxAddedOptionNumber) || (_pduLength == (COAP_HDR_SIZE+getTokenLength())) ) { |
ashleymills | 0:3d62a105fd34 | 1427 | *prevOptionNumber = _maxAddedOptionNumber; |
ashleymills | 0:3d62a105fd34 | 1428 | return _pduLength; |
ashleymills | 0:3d62a105fd34 | 1429 | } |
ashleymills | 0:3d62a105fd34 | 1430 | |
ashleymills | 0:3d62a105fd34 | 1431 | // otherwise walk over the options |
ashleymills | 0:3d62a105fd34 | 1432 | int optionPos = COAP_HDR_SIZE + getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 1433 | uint16_t optionDelta = 0, optionValueLength = 0; |
ashleymills | 0:3d62a105fd34 | 1434 | uint16_t currentOptionNumber = 0; |
ashleymills | 0:3d62a105fd34 | 1435 | while(optionPos<_pduLength && _pdu[optionPos]!=0xFF) { |
ashleymills | 0:3d62a105fd34 | 1436 | optionDelta = getOptionDelta(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 1437 | currentOptionNumber += optionDelta; |
ashleymills | 0:3d62a105fd34 | 1438 | optionValueLength = getOptionValueLength(&_pdu[optionPos]); |
ashleymills | 0:3d62a105fd34 | 1439 | // test if this is insertion position |
ashleymills | 0:3d62a105fd34 | 1440 | if(currentOptionNumber>optionNumber) { |
ashleymills | 0:3d62a105fd34 | 1441 | return optionPos; |
ashleymills | 0:3d62a105fd34 | 1442 | } |
ashleymills | 0:3d62a105fd34 | 1443 | // keep track of the last valid option number |
ashleymills | 0:3d62a105fd34 | 1444 | *prevOptionNumber = currentOptionNumber; |
ashleymills | 0:3d62a105fd34 | 1445 | // move onto next option |
ashleymills | 0:3d62a105fd34 | 1446 | optionPos += computeExtraBytes(optionDelta); |
ashleymills | 0:3d62a105fd34 | 1447 | optionPos += computeExtraBytes(optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1448 | optionPos += optionValueLength; |
ashleymills | 0:3d62a105fd34 | 1449 | optionPos++; // (for mandatory option header byte) |
ashleymills | 0:3d62a105fd34 | 1450 | } |
ashleymills | 0:3d62a105fd34 | 1451 | return optionPos; |
ashleymills | 0:3d62a105fd34 | 1452 | |
ashleymills | 0:3d62a105fd34 | 1453 | } |
ashleymills | 0:3d62a105fd34 | 1454 | |
ashleymills | 0:3d62a105fd34 | 1455 | /// CoAP uses a minimal-byte representation for length fields. This returns the number of bytes needed to represent a given length. |
ashleymills | 0:3d62a105fd34 | 1456 | int CoapPDU::computeExtraBytes(uint16_t n) { |
ashleymills | 0:3d62a105fd34 | 1457 | if(n<13) { |
ashleymills | 0:3d62a105fd34 | 1458 | return 0; |
ashleymills | 0:3d62a105fd34 | 1459 | } |
ashleymills | 0:3d62a105fd34 | 1460 | |
ashleymills | 0:3d62a105fd34 | 1461 | if(n<269) { |
ashleymills | 0:3d62a105fd34 | 1462 | return 1; |
ashleymills | 0:3d62a105fd34 | 1463 | } |
ashleymills | 0:3d62a105fd34 | 1464 | |
ashleymills | 0:3d62a105fd34 | 1465 | return 2; |
ashleymills | 0:3d62a105fd34 | 1466 | } |
ashleymills | 0:3d62a105fd34 | 1467 | |
ashleymills | 0:3d62a105fd34 | 1468 | /// Set the option delta to the specified value. |
ashleymills | 0:3d62a105fd34 | 1469 | /** |
ashleymills | 0:3d62a105fd34 | 1470 | * This assumes space has been made for the option delta. |
ashleymills | 0:3d62a105fd34 | 1471 | * \param optionPosition The index of the option in the PDU. |
ashleymills | 0:3d62a105fd34 | 1472 | * \param optionDelta The option delta value to set. |
ashleymills | 0:3d62a105fd34 | 1473 | */ |
ashleymills | 0:3d62a105fd34 | 1474 | void CoapPDU::setOptionDelta(int optionPosition, uint16_t optionDelta) { |
ashleymills | 0:3d62a105fd34 | 1475 | int headerStart = optionPosition; |
ashleymills | 0:3d62a105fd34 | 1476 | // clear the old option delta bytes |
ashleymills | 0:3d62a105fd34 | 1477 | _pdu[headerStart] &= 0x0F; |
ashleymills | 0:3d62a105fd34 | 1478 | |
ashleymills | 0:3d62a105fd34 | 1479 | // set the option delta bytes |
ashleymills | 0:3d62a105fd34 | 1480 | if(optionDelta<13) { |
ashleymills | 0:3d62a105fd34 | 1481 | _pdu[headerStart] |= (optionDelta << 4); |
ashleymills | 0:3d62a105fd34 | 1482 | } else if(optionDelta<269) { |
ashleymills | 0:3d62a105fd34 | 1483 | // 1 extra byte |
ashleymills | 0:3d62a105fd34 | 1484 | _pdu[headerStart] |= 0xD0; // 13 in first nibble |
ashleymills | 0:3d62a105fd34 | 1485 | _pdu[++optionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1486 | _pdu[optionPosition] |= (optionDelta-13); |
ashleymills | 0:3d62a105fd34 | 1487 | } else { |
ashleymills | 0:3d62a105fd34 | 1488 | // 2 extra bytes, network byte order uint16_t |
ashleymills | 0:3d62a105fd34 | 1489 | _pdu[headerStart] |= 0xE0; // 14 in first nibble |
ashleymills | 0:3d62a105fd34 | 1490 | optionDelta = htons(optionDelta-269); |
ashleymills | 0:3d62a105fd34 | 1491 | _pdu[++optionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1492 | _pdu[optionPosition] |= (optionDelta >> 8); // MSB |
ashleymills | 0:3d62a105fd34 | 1493 | _pdu[++optionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1494 | _pdu[optionPosition] |= (optionDelta & 0x00FF); // LSB |
ashleymills | 0:3d62a105fd34 | 1495 | } |
ashleymills | 0:3d62a105fd34 | 1496 | } |
ashleymills | 0:3d62a105fd34 | 1497 | |
ashleymills | 0:3d62a105fd34 | 1498 | /// Insert an option in-memory at the specified location. |
ashleymills | 0:3d62a105fd34 | 1499 | /** |
ashleymills | 0:3d62a105fd34 | 1500 | * This assumes that there is enough space at the location specified. |
ashleymills | 0:3d62a105fd34 | 1501 | * \param insertionPosition Position in the PDU where the option should be placed. |
ashleymills | 0:3d62a105fd34 | 1502 | * \param optionDelta The delta value for the option. |
ashleymills | 0:3d62a105fd34 | 1503 | * \param optionValueLength The length of the option value. |
ashleymills | 0:3d62a105fd34 | 1504 | * \param optionValue A pointer to the sequence of bytes representing the option value. |
ashleymills | 0:3d62a105fd34 | 1505 | * \return 0 on success, 1 on failure. |
ashleymills | 0:3d62a105fd34 | 1506 | */ |
ashleymills | 0:3d62a105fd34 | 1507 | int CoapPDU::insertOption( |
ashleymills | 0:3d62a105fd34 | 1508 | int insertionPosition, |
ashleymills | 0:3d62a105fd34 | 1509 | uint16_t optionDelta, |
ashleymills | 0:3d62a105fd34 | 1510 | uint16_t optionValueLength, |
ashleymills | 0:3d62a105fd34 | 1511 | uint8_t *optionValue) { |
ashleymills | 0:3d62a105fd34 | 1512 | |
ashleymills | 0:3d62a105fd34 | 1513 | int headerStart = insertionPosition; |
ashleymills | 0:3d62a105fd34 | 1514 | |
ashleymills | 0:3d62a105fd34 | 1515 | // clear old option header start |
ashleymills | 0:3d62a105fd34 | 1516 | _pdu[headerStart] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1517 | |
ashleymills | 0:3d62a105fd34 | 1518 | // set the option delta bytes |
ashleymills | 0:3d62a105fd34 | 1519 | if(optionDelta<13) { |
ashleymills | 0:3d62a105fd34 | 1520 | _pdu[headerStart] |= (optionDelta << 4); |
ashleymills | 0:3d62a105fd34 | 1521 | } else if(optionDelta<269) { |
ashleymills | 0:3d62a105fd34 | 1522 | // 1 extra byte |
ashleymills | 0:3d62a105fd34 | 1523 | _pdu[headerStart] |= 0xD0; // 13 in first nibble |
ashleymills | 0:3d62a105fd34 | 1524 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1525 | _pdu[insertionPosition] |= (optionDelta-13); |
ashleymills | 0:3d62a105fd34 | 1526 | } else { |
ashleymills | 0:3d62a105fd34 | 1527 | // 2 extra bytes, network byte order uint16_t |
ashleymills | 0:3d62a105fd34 | 1528 | _pdu[headerStart] |= 0xE0; // 14 in first nibble |
ashleymills | 0:3d62a105fd34 | 1529 | optionDelta = htons(optionDelta-269); |
ashleymills | 0:3d62a105fd34 | 1530 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1531 | _pdu[insertionPosition] |= (optionDelta >> 8); // MSB |
ashleymills | 0:3d62a105fd34 | 1532 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1533 | _pdu[insertionPosition] |= (optionDelta & 0x00FF); // LSB |
ashleymills | 0:3d62a105fd34 | 1534 | } |
ashleymills | 0:3d62a105fd34 | 1535 | |
ashleymills | 0:3d62a105fd34 | 1536 | // set the option value length bytes |
ashleymills | 0:3d62a105fd34 | 1537 | if(optionValueLength<13) { |
ashleymills | 0:3d62a105fd34 | 1538 | _pdu[headerStart] |= (optionValueLength & 0x000F); |
ashleymills | 0:3d62a105fd34 | 1539 | } else if(optionValueLength<269) { |
ashleymills | 0:3d62a105fd34 | 1540 | _pdu[headerStart] |= 0x0D; // 13 in second nibble |
ashleymills | 0:3d62a105fd34 | 1541 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1542 | _pdu[insertionPosition] |= (optionValueLength-13); |
ashleymills | 0:3d62a105fd34 | 1543 | } else { |
ashleymills | 0:3d62a105fd34 | 1544 | _pdu[headerStart] |= 0x0E; // 14 in second nibble |
ashleymills | 0:3d62a105fd34 | 1545 | // this is in network byte order |
ashleymills | 0:3d62a105fd34 | 1546 | DBG("optionValueLength: %u",optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1547 | uint16_t networkOrder = htons(optionValueLength-269); |
ashleymills | 0:3d62a105fd34 | 1548 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1549 | _pdu[insertionPosition] |= (networkOrder >> 8); // MSB |
ashleymills | 0:3d62a105fd34 | 1550 | _pdu[++insertionPosition] &= 0x00; |
ashleymills | 0:3d62a105fd34 | 1551 | _pdu[insertionPosition] |= (networkOrder & 0x00FF); // LSB |
ashleymills | 0:3d62a105fd34 | 1552 | } |
ashleymills | 0:3d62a105fd34 | 1553 | |
ashleymills | 0:3d62a105fd34 | 1554 | // and finally copy the option value itself |
ashleymills | 0:3d62a105fd34 | 1555 | memcpy(&_pdu[++insertionPosition],optionValue,optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1556 | |
ashleymills | 0:3d62a105fd34 | 1557 | return 0; |
ashleymills | 0:3d62a105fd34 | 1558 | } |
ashleymills | 0:3d62a105fd34 | 1559 | |
ashleymills | 0:3d62a105fd34 | 1560 | // DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG |
ashleymills | 0:3d62a105fd34 | 1561 | // DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG |
ashleymills | 0:3d62a105fd34 | 1562 | |
ashleymills | 0:3d62a105fd34 | 1563 | /// Prints the PDU in human-readable format. |
ashleymills | 0:3d62a105fd34 | 1564 | void CoapPDU::printHuman() { |
pnysten | 2:d0d57af6c9df | 1565 | INFO("__________________"); |
ashleymills | 0:3d62a105fd34 | 1566 | if(_constructedFromBuffer) { |
pnysten | 2:d0d57af6c9df | 1567 | INFO("PDU was constructed from buffer of %d bytes",_bufferLength); |
ashleymills | 0:3d62a105fd34 | 1568 | } |
pnysten | 2:d0d57af6c9df | 1569 | INFO("PDU is %d bytes long",_pduLength); |
pnysten | 2:d0d57af6c9df | 1570 | INFO("CoAP Version: %d",getVersion()); |
ashleymills | 0:3d62a105fd34 | 1571 | INFOX("Message Type: "); |
ashleymills | 0:3d62a105fd34 | 1572 | switch(getType()) { |
ashleymills | 0:3d62a105fd34 | 1573 | case COAP_CONFIRMABLE: |
pnysten | 2:d0d57af6c9df | 1574 | INFO("Confirmable"); |
ashleymills | 0:3d62a105fd34 | 1575 | break; |
ashleymills | 0:3d62a105fd34 | 1576 | |
ashleymills | 0:3d62a105fd34 | 1577 | case COAP_NON_CONFIRMABLE: |
pnysten | 2:d0d57af6c9df | 1578 | INFO("Non-Confirmable"); |
ashleymills | 0:3d62a105fd34 | 1579 | break; |
ashleymills | 0:3d62a105fd34 | 1580 | |
ashleymills | 0:3d62a105fd34 | 1581 | case COAP_ACKNOWLEDGEMENT: |
pnysten | 2:d0d57af6c9df | 1582 | INFO("Acknowledgement"); |
ashleymills | 0:3d62a105fd34 | 1583 | break; |
ashleymills | 0:3d62a105fd34 | 1584 | |
ashleymills | 0:3d62a105fd34 | 1585 | case COAP_RESET: |
pnysten | 2:d0d57af6c9df | 1586 | INFO("Reset"); |
ashleymills | 0:3d62a105fd34 | 1587 | break; |
ashleymills | 0:3d62a105fd34 | 1588 | } |
pnysten | 2:d0d57af6c9df | 1589 | INFO("Token length: %d",getTokenLength()); |
ashleymills | 0:3d62a105fd34 | 1590 | INFOX("Code: "); |
ashleymills | 0:3d62a105fd34 | 1591 | switch(getCode()) { |
ashleymills | 0:3d62a105fd34 | 1592 | case COAP_EMPTY: |
pnysten | 2:d0d57af6c9df | 1593 | INFO("0.00 Empty"); |
ashleymills | 0:3d62a105fd34 | 1594 | break; |
ashleymills | 0:3d62a105fd34 | 1595 | case COAP_GET: |
pnysten | 2:d0d57af6c9df | 1596 | INFO("0.01 GET"); |
ashleymills | 0:3d62a105fd34 | 1597 | break; |
ashleymills | 0:3d62a105fd34 | 1598 | case COAP_POST: |
pnysten | 2:d0d57af6c9df | 1599 | INFO("0.02 POST"); |
ashleymills | 0:3d62a105fd34 | 1600 | break; |
ashleymills | 0:3d62a105fd34 | 1601 | case COAP_PUT: |
pnysten | 2:d0d57af6c9df | 1602 | INFO("0.03 PUT"); |
ashleymills | 0:3d62a105fd34 | 1603 | break; |
ashleymills | 0:3d62a105fd34 | 1604 | case COAP_DELETE: |
pnysten | 2:d0d57af6c9df | 1605 | INFO("0.04 DELETE"); |
ashleymills | 0:3d62a105fd34 | 1606 | break; |
ashleymills | 0:3d62a105fd34 | 1607 | case COAP_CREATED: |
pnysten | 2:d0d57af6c9df | 1608 | INFO("2.01 Created"); |
ashleymills | 0:3d62a105fd34 | 1609 | break; |
ashleymills | 0:3d62a105fd34 | 1610 | case COAP_DELETED: |
pnysten | 2:d0d57af6c9df | 1611 | INFO("2.02 Deleted"); |
ashleymills | 0:3d62a105fd34 | 1612 | break; |
ashleymills | 0:3d62a105fd34 | 1613 | case COAP_VALID: |
pnysten | 2:d0d57af6c9df | 1614 | INFO("2.03 Valid"); |
ashleymills | 0:3d62a105fd34 | 1615 | break; |
ashleymills | 0:3d62a105fd34 | 1616 | case COAP_CHANGED: |
pnysten | 2:d0d57af6c9df | 1617 | INFO("2.04 Changed"); |
ashleymills | 0:3d62a105fd34 | 1618 | break; |
ashleymills | 0:3d62a105fd34 | 1619 | case COAP_CONTENT: |
pnysten | 2:d0d57af6c9df | 1620 | INFO("2.05 Content"); |
ashleymills | 0:3d62a105fd34 | 1621 | break; |
ashleymills | 0:3d62a105fd34 | 1622 | case COAP_BAD_REQUEST: |
pnysten | 2:d0d57af6c9df | 1623 | INFO("4.00 Bad Request"); |
ashleymills | 0:3d62a105fd34 | 1624 | break; |
ashleymills | 0:3d62a105fd34 | 1625 | case COAP_UNAUTHORIZED: |
pnysten | 2:d0d57af6c9df | 1626 | INFO("4.01 Unauthorized"); |
ashleymills | 0:3d62a105fd34 | 1627 | break; |
ashleymills | 0:3d62a105fd34 | 1628 | case COAP_BAD_OPTION: |
pnysten | 2:d0d57af6c9df | 1629 | INFO("4.02 Bad Option"); |
ashleymills | 0:3d62a105fd34 | 1630 | break; |
ashleymills | 0:3d62a105fd34 | 1631 | case COAP_FORBIDDEN: |
pnysten | 2:d0d57af6c9df | 1632 | INFO("4.03 Forbidden"); |
ashleymills | 0:3d62a105fd34 | 1633 | break; |
ashleymills | 0:3d62a105fd34 | 1634 | case COAP_NOT_FOUND: |
pnysten | 2:d0d57af6c9df | 1635 | INFO("4.04 Not Found"); |
ashleymills | 0:3d62a105fd34 | 1636 | break; |
ashleymills | 0:3d62a105fd34 | 1637 | case COAP_METHOD_NOT_ALLOWED: |
pnysten | 2:d0d57af6c9df | 1638 | INFO("4.05 Method Not Allowed"); |
ashleymills | 0:3d62a105fd34 | 1639 | break; |
ashleymills | 0:3d62a105fd34 | 1640 | case COAP_NOT_ACCEPTABLE: |
pnysten | 2:d0d57af6c9df | 1641 | INFO("4.06 Not Acceptable"); |
ashleymills | 0:3d62a105fd34 | 1642 | break; |
ashleymills | 0:3d62a105fd34 | 1643 | case COAP_PRECONDITION_FAILED: |
pnysten | 2:d0d57af6c9df | 1644 | INFO("4.12 Precondition Failed"); |
ashleymills | 0:3d62a105fd34 | 1645 | break; |
ashleymills | 0:3d62a105fd34 | 1646 | case COAP_REQUEST_ENTITY_TOO_LARGE: |
pnysten | 2:d0d57af6c9df | 1647 | INFO("4.13 Request Entity Too Large"); |
ashleymills | 0:3d62a105fd34 | 1648 | break; |
ashleymills | 0:3d62a105fd34 | 1649 | case COAP_UNSUPPORTED_CONTENT_FORMAT: |
pnysten | 2:d0d57af6c9df | 1650 | INFO("4.15 Unsupported Content-Format"); |
ashleymills | 0:3d62a105fd34 | 1651 | break; |
ashleymills | 0:3d62a105fd34 | 1652 | case COAP_INTERNAL_SERVER_ERROR: |
pnysten | 2:d0d57af6c9df | 1653 | INFO("5.00 Internal Server Error"); |
ashleymills | 0:3d62a105fd34 | 1654 | break; |
ashleymills | 0:3d62a105fd34 | 1655 | case COAP_NOT_IMPLEMENTED: |
pnysten | 2:d0d57af6c9df | 1656 | INFO("5.01 Not Implemented"); |
ashleymills | 0:3d62a105fd34 | 1657 | break; |
ashleymills | 0:3d62a105fd34 | 1658 | case COAP_BAD_GATEWAY: |
pnysten | 2:d0d57af6c9df | 1659 | INFO("5.02 Bad Gateway"); |
ashleymills | 0:3d62a105fd34 | 1660 | break; |
ashleymills | 0:3d62a105fd34 | 1661 | case COAP_SERVICE_UNAVAILABLE: |
pnysten | 2:d0d57af6c9df | 1662 | INFO("5.03 Service Unavailable"); |
ashleymills | 0:3d62a105fd34 | 1663 | break; |
ashleymills | 0:3d62a105fd34 | 1664 | case COAP_GATEWAY_TIMEOUT: |
pnysten | 2:d0d57af6c9df | 1665 | INFO("5.04 Gateway Timeout"); |
ashleymills | 0:3d62a105fd34 | 1666 | break; |
ashleymills | 0:3d62a105fd34 | 1667 | case COAP_PROXYING_NOT_SUPPORTED: |
pnysten | 2:d0d57af6c9df | 1668 | INFO("5.05 Proxying Not Supported"); |
ashleymills | 1:5eec2844ad47 | 1669 | break; |
ashleymills | 1:5eec2844ad47 | 1670 | case COAP_UNDEFINED_CODE: |
pnysten | 2:d0d57af6c9df | 1671 | INFO("Undefined Code"); |
ashleymills | 0:3d62a105fd34 | 1672 | break; |
ashleymills | 0:3d62a105fd34 | 1673 | } |
ashleymills | 0:3d62a105fd34 | 1674 | |
ashleymills | 0:3d62a105fd34 | 1675 | // print message ID |
pnysten | 2:d0d57af6c9df | 1676 | INFO("Message ID: %u",getMessageID()); |
ashleymills | 0:3d62a105fd34 | 1677 | |
ashleymills | 0:3d62a105fd34 | 1678 | // print token value |
ashleymills | 0:3d62a105fd34 | 1679 | int tokenLength = getTokenLength(); |
ashleymills | 0:3d62a105fd34 | 1680 | uint8_t *tokenPointer = getPDUPointer()+COAP_HDR_SIZE; |
ashleymills | 0:3d62a105fd34 | 1681 | if(tokenLength==0) { |
pnysten | 2:d0d57af6c9df | 1682 | INFO("No token."); |
ashleymills | 0:3d62a105fd34 | 1683 | } else { |
pnysten | 2:d0d57af6c9df | 1684 | INFO("Token of %d bytes.",tokenLength); |
ashleymills | 0:3d62a105fd34 | 1685 | INFOX(" Value: 0x"); |
ashleymills | 0:3d62a105fd34 | 1686 | for(int j=0; j<tokenLength; j++) { |
ashleymills | 0:3d62a105fd34 | 1687 | INFOX("%.2x",tokenPointer[j]); |
ashleymills | 0:3d62a105fd34 | 1688 | } |
pnysten | 2:d0d57af6c9df | 1689 | INFO(" "); |
ashleymills | 0:3d62a105fd34 | 1690 | } |
ashleymills | 0:3d62a105fd34 | 1691 | |
ashleymills | 0:3d62a105fd34 | 1692 | // print options |
ashleymills | 0:3d62a105fd34 | 1693 | CoapPDU::CoapOption* options = getOptions(); |
pnysten | 2:d0d57af6c9df | 1694 | INFO("%d options:",_numOptions); |
ashleymills | 0:3d62a105fd34 | 1695 | for(int i=0; i<_numOptions; i++) { |
pnysten | 2:d0d57af6c9df | 1696 | INFO("OPTION (%d/%d)",i + 1,_numOptions); |
pnysten | 2:d0d57af6c9df | 1697 | INFO(" Option number (delta): %hu (%hu)",options[i].optionNumber,options[i].optionDelta); |
ashleymills | 0:3d62a105fd34 | 1698 | INFOX(" Name: "); |
ashleymills | 0:3d62a105fd34 | 1699 | switch(options[i].optionNumber) { |
ashleymills | 0:3d62a105fd34 | 1700 | case COAP_OPTION_IF_MATCH: |
pnysten | 2:d0d57af6c9df | 1701 | INFO("IF_MATCH"); |
ashleymills | 0:3d62a105fd34 | 1702 | break; |
ashleymills | 0:3d62a105fd34 | 1703 | case COAP_OPTION_URI_HOST: |
pnysten | 2:d0d57af6c9df | 1704 | INFO("URI_HOST"); |
ashleymills | 0:3d62a105fd34 | 1705 | break; |
ashleymills | 0:3d62a105fd34 | 1706 | case COAP_OPTION_ETAG: |
pnysten | 2:d0d57af6c9df | 1707 | INFO("ETAG"); |
ashleymills | 0:3d62a105fd34 | 1708 | break; |
ashleymills | 0:3d62a105fd34 | 1709 | case COAP_OPTION_IF_NONE_MATCH: |
pnysten | 2:d0d57af6c9df | 1710 | INFO("IF_NONE_MATCH"); |
ashleymills | 0:3d62a105fd34 | 1711 | break; |
ashleymills | 0:3d62a105fd34 | 1712 | case COAP_OPTION_OBSERVE: |
pnysten | 2:d0d57af6c9df | 1713 | INFO("OBSERVE"); |
ashleymills | 0:3d62a105fd34 | 1714 | break; |
ashleymills | 0:3d62a105fd34 | 1715 | case COAP_OPTION_URI_PORT: |
pnysten | 2:d0d57af6c9df | 1716 | INFO("URI_PORT"); |
ashleymills | 0:3d62a105fd34 | 1717 | break; |
ashleymills | 0:3d62a105fd34 | 1718 | case COAP_OPTION_LOCATION_PATH: |
pnysten | 2:d0d57af6c9df | 1719 | INFO("LOCATION_PATH"); |
ashleymills | 0:3d62a105fd34 | 1720 | break; |
ashleymills | 0:3d62a105fd34 | 1721 | case COAP_OPTION_URI_PATH: |
pnysten | 2:d0d57af6c9df | 1722 | INFO("URI_PATH"); |
ashleymills | 0:3d62a105fd34 | 1723 | break; |
ashleymills | 0:3d62a105fd34 | 1724 | case COAP_OPTION_CONTENT_FORMAT: |
pnysten | 2:d0d57af6c9df | 1725 | INFO("CONTENT_FORMAT"); |
ashleymills | 0:3d62a105fd34 | 1726 | break; |
ashleymills | 0:3d62a105fd34 | 1727 | case COAP_OPTION_MAX_AGE: |
pnysten | 2:d0d57af6c9df | 1728 | INFO("MAX_AGE"); |
ashleymills | 0:3d62a105fd34 | 1729 | break; |
ashleymills | 0:3d62a105fd34 | 1730 | case COAP_OPTION_URI_QUERY: |
pnysten | 2:d0d57af6c9df | 1731 | INFO("URI_QUERY"); |
ashleymills | 0:3d62a105fd34 | 1732 | break; |
ashleymills | 0:3d62a105fd34 | 1733 | case COAP_OPTION_ACCEPT: |
pnysten | 2:d0d57af6c9df | 1734 | INFO("ACCEPT"); |
ashleymills | 0:3d62a105fd34 | 1735 | break; |
ashleymills | 0:3d62a105fd34 | 1736 | case COAP_OPTION_LOCATION_QUERY: |
pnysten | 2:d0d57af6c9df | 1737 | INFO("LOCATION_QUERY"); |
ashleymills | 0:3d62a105fd34 | 1738 | break; |
ashleymills | 0:3d62a105fd34 | 1739 | case COAP_OPTION_PROXY_URI: |
pnysten | 2:d0d57af6c9df | 1740 | INFO("PROXY_URI"); |
ashleymills | 0:3d62a105fd34 | 1741 | break; |
ashleymills | 0:3d62a105fd34 | 1742 | case COAP_OPTION_PROXY_SCHEME: |
pnysten | 2:d0d57af6c9df | 1743 | INFO("PROXY_SCHEME"); |
ashleymills | 0:3d62a105fd34 | 1744 | break; |
ashleymills | 0:3d62a105fd34 | 1745 | case COAP_OPTION_BLOCK1: |
pnysten | 2:d0d57af6c9df | 1746 | INFO("BLOCK1"); |
ashleymills | 0:3d62a105fd34 | 1747 | break; |
ashleymills | 0:3d62a105fd34 | 1748 | case COAP_OPTION_BLOCK2: |
pnysten | 2:d0d57af6c9df | 1749 | INFO("BLOCK2"); |
ashleymills | 0:3d62a105fd34 | 1750 | break; |
ashleymills | 0:3d62a105fd34 | 1751 | case COAP_OPTION_SIZE1: |
pnysten | 2:d0d57af6c9df | 1752 | INFO("SIZE1"); |
ashleymills | 0:3d62a105fd34 | 1753 | break; |
ashleymills | 0:3d62a105fd34 | 1754 | case COAP_OPTION_SIZE2: |
pnysten | 2:d0d57af6c9df | 1755 | INFO("SIZE2"); |
ashleymills | 0:3d62a105fd34 | 1756 | break; |
ashleymills | 0:3d62a105fd34 | 1757 | default: |
pnysten | 2:d0d57af6c9df | 1758 | INFO("Unknown option"); |
ashleymills | 0:3d62a105fd34 | 1759 | break; |
ashleymills | 0:3d62a105fd34 | 1760 | } |
pnysten | 2:d0d57af6c9df | 1761 | INFO(" Value length: %u",options[i].optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1762 | INFOX(" Value: \""); |
ashleymills | 0:3d62a105fd34 | 1763 | for(int j=0; j<options[i].optionValueLength; j++) { |
ashleymills | 0:3d62a105fd34 | 1764 | char c = options[i].optionValuePointer[j]; |
ashleymills | 0:3d62a105fd34 | 1765 | if((c>='!'&&c<='~')||c==' ') { |
ashleymills | 0:3d62a105fd34 | 1766 | INFOX("%c",c); |
ashleymills | 0:3d62a105fd34 | 1767 | } else { |
ashleymills | 0:3d62a105fd34 | 1768 | INFOX("\\%.2d",c); |
ashleymills | 0:3d62a105fd34 | 1769 | } |
ashleymills | 0:3d62a105fd34 | 1770 | } |
pnysten | 2:d0d57af6c9df | 1771 | INFO("\""); |
ashleymills | 0:3d62a105fd34 | 1772 | } |
ashleymills | 0:3d62a105fd34 | 1773 | |
ashleymills | 0:3d62a105fd34 | 1774 | // print payload |
ashleymills | 0:3d62a105fd34 | 1775 | if(_payloadLength==0) { |
pnysten | 2:d0d57af6c9df | 1776 | INFO("No payload."); |
ashleymills | 0:3d62a105fd34 | 1777 | } else { |
pnysten | 2:d0d57af6c9df | 1778 | INFO("Payload of %d bytes",_payloadLength); |
ashleymills | 0:3d62a105fd34 | 1779 | INFOX(" Value: \""); |
ashleymills | 0:3d62a105fd34 | 1780 | for(int j=0; j<_payloadLength; j++) { |
ashleymills | 0:3d62a105fd34 | 1781 | char c = _payloadPointer[j]; |
ashleymills | 0:3d62a105fd34 | 1782 | if((c>='!'&&c<='~')||c==' ') { |
ashleymills | 0:3d62a105fd34 | 1783 | INFOX("%c",c); |
ashleymills | 0:3d62a105fd34 | 1784 | } else { |
ashleymills | 0:3d62a105fd34 | 1785 | INFOX("\\%.2x",c); |
ashleymills | 0:3d62a105fd34 | 1786 | } |
ashleymills | 0:3d62a105fd34 | 1787 | } |
pnysten | 2:d0d57af6c9df | 1788 | INFO("\""); |
ashleymills | 0:3d62a105fd34 | 1789 | } |
pnysten | 2:d0d57af6c9df | 1790 | INFO("__________________"); |
ashleymills | 0:3d62a105fd34 | 1791 | } |
ashleymills | 0:3d62a105fd34 | 1792 | |
ashleymills | 0:3d62a105fd34 | 1793 | /// Prints the PDU as a c array (useful for debugging or hardcoding PDUs) |
ashleymills | 0:3d62a105fd34 | 1794 | void CoapPDU::printPDUAsCArray() { |
ashleymills | 0:3d62a105fd34 | 1795 | printf("const uint8_t array[] = {\r\n "); |
ashleymills | 0:3d62a105fd34 | 1796 | for(int i=0; i<_pduLength; i++) { |
ashleymills | 0:3d62a105fd34 | 1797 | printf("0x%.2x, ",_pdu[i]); |
ashleymills | 0:3d62a105fd34 | 1798 | } |
ashleymills | 0:3d62a105fd34 | 1799 | printf("\r\n};\r\n"); |
ashleymills | 0:3d62a105fd34 | 1800 | } |
ashleymills | 0:3d62a105fd34 | 1801 | |
ashleymills | 0:3d62a105fd34 | 1802 | /// A routine for printing an option in human-readable format. |
ashleymills | 0:3d62a105fd34 | 1803 | /** |
ashleymills | 0:3d62a105fd34 | 1804 | * \param option This is a pointer to where the option begins in the PDU. |
ashleymills | 0:3d62a105fd34 | 1805 | */ |
ashleymills | 0:3d62a105fd34 | 1806 | void CoapPDU::printOptionHuman(uint8_t *option) { |
ashleymills | 0:3d62a105fd34 | 1807 | // compute some useful stuff |
ashleymills | 0:3d62a105fd34 | 1808 | uint16_t optionDelta = getOptionDelta(option); |
ashleymills | 0:3d62a105fd34 | 1809 | uint16_t optionValueLength = getOptionValueLength(option); |
ashleymills | 0:3d62a105fd34 | 1810 | int extraDeltaBytes = computeExtraBytes(optionDelta); |
ashleymills | 0:3d62a105fd34 | 1811 | int extraValueLengthBytes = computeExtraBytes(optionValueLength); |
pnysten | 2:d0d57af6c9df | 1812 | long totalLength = 1+extraDeltaBytes+extraValueLengthBytes+optionValueLength; |
ashleymills | 0:3d62a105fd34 | 1813 | |
ashleymills | 0:3d62a105fd34 | 1814 | if(totalLength>_pduLength) { |
ashleymills | 0:3d62a105fd34 | 1815 | totalLength = &_pdu[_pduLength-1]-option; |
ashleymills | 0:3d62a105fd34 | 1816 | DBG("New length: %u",totalLength); |
ashleymills | 0:3d62a105fd34 | 1817 | } |
ashleymills | 0:3d62a105fd34 | 1818 | |
ashleymills | 0:3d62a105fd34 | 1819 | // print summary |
ashleymills | 0:3d62a105fd34 | 1820 | DBG("~~~~~~ Option ~~~~~~"); |
ashleymills | 0:3d62a105fd34 | 1821 | DBG("Delta: %u, Value length: %u",optionDelta,optionValueLength); |
ashleymills | 0:3d62a105fd34 | 1822 | |
ashleymills | 0:3d62a105fd34 | 1823 | // print all bytes |
ashleymills | 0:3d62a105fd34 | 1824 | DBG("All bytes (%d):",totalLength); |
ashleymills | 0:3d62a105fd34 | 1825 | for(int i=0; i<totalLength; i++) { |
ashleymills | 0:3d62a105fd34 | 1826 | if(i%4==0) { |
ashleymills | 0:3d62a105fd34 | 1827 | DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1828 | DBGX(" %.2d ",i); |
ashleymills | 0:3d62a105fd34 | 1829 | } |
ashleymills | 0:3d62a105fd34 | 1830 | CoapPDU::printBinary(option[i]); DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1831 | } |
ashleymills | 0:3d62a105fd34 | 1832 | DBG(" "); DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1833 | |
ashleymills | 0:3d62a105fd34 | 1834 | // print header byte |
ashleymills | 0:3d62a105fd34 | 1835 | DBG("Header byte:"); |
ashleymills | 0:3d62a105fd34 | 1836 | DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1837 | CoapPDU::printBinary(*option++); |
ashleymills | 0:3d62a105fd34 | 1838 | DBG(" "); DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1839 | |
ashleymills | 0:3d62a105fd34 | 1840 | // print extended delta bytes |
ashleymills | 0:3d62a105fd34 | 1841 | if(extraDeltaBytes) { |
ashleymills | 0:3d62a105fd34 | 1842 | DBG("Extended delta bytes (%d) in network order: ",extraDeltaBytes); |
ashleymills | 0:3d62a105fd34 | 1843 | DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1844 | while(extraDeltaBytes--) { |
ashleymills | 0:3d62a105fd34 | 1845 | CoapPDU::printBinary(*option++); DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1846 | } |
ashleymills | 0:3d62a105fd34 | 1847 | } else { |
ashleymills | 0:3d62a105fd34 | 1848 | DBG("No extended delta bytes"); |
ashleymills | 0:3d62a105fd34 | 1849 | } |
ashleymills | 0:3d62a105fd34 | 1850 | DBG(" "); DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1851 | |
ashleymills | 0:3d62a105fd34 | 1852 | // print extended value length bytes |
ashleymills | 0:3d62a105fd34 | 1853 | if(extraValueLengthBytes) { |
ashleymills | 0:3d62a105fd34 | 1854 | DBG("Extended value length bytes (%d) in network order: ",extraValueLengthBytes); |
ashleymills | 0:3d62a105fd34 | 1855 | DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1856 | while(extraValueLengthBytes--) { |
ashleymills | 0:3d62a105fd34 | 1857 | CoapPDU::printBinary(*option++); DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1858 | } |
ashleymills | 0:3d62a105fd34 | 1859 | } else { |
ashleymills | 0:3d62a105fd34 | 1860 | DBG("No extended value length bytes"); |
ashleymills | 0:3d62a105fd34 | 1861 | } |
ashleymills | 0:3d62a105fd34 | 1862 | DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1863 | |
ashleymills | 0:3d62a105fd34 | 1864 | // print option value |
ashleymills | 0:3d62a105fd34 | 1865 | DBG("Option value bytes:"); |
ashleymills | 0:3d62a105fd34 | 1866 | for(int i=0; i<optionValueLength; i++) { |
ashleymills | 0:3d62a105fd34 | 1867 | if(i%4==0) { |
ashleymills | 0:3d62a105fd34 | 1868 | DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1869 | DBGX(" %.2d ",i); |
ashleymills | 0:3d62a105fd34 | 1870 | } |
ashleymills | 0:3d62a105fd34 | 1871 | CoapPDU::printBinary(*option++); |
ashleymills | 0:3d62a105fd34 | 1872 | DBGX(" "); |
ashleymills | 0:3d62a105fd34 | 1873 | } |
ashleymills | 0:3d62a105fd34 | 1874 | DBG(" "); |
ashleymills | 0:3d62a105fd34 | 1875 | } |
ashleymills | 0:3d62a105fd34 | 1876 | |
ashleymills | 0:3d62a105fd34 | 1877 | /// Dumps the PDU header in hex. |
ashleymills | 0:3d62a105fd34 | 1878 | void CoapPDU::printHex() { |
ashleymills | 0:3d62a105fd34 | 1879 | printf("Hexdump dump of PDU\r\n"); |
ashleymills | 0:3d62a105fd34 | 1880 | printf("%.2x %.2x %.2x %.2x",_pdu[0],_pdu[1],_pdu[2],_pdu[3]); |
ashleymills | 0:3d62a105fd34 | 1881 | } |
ashleymills | 0:3d62a105fd34 | 1882 | |
ashleymills | 0:3d62a105fd34 | 1883 | /// Dumps the entire PDU in binary. |
ashleymills | 0:3d62a105fd34 | 1884 | void CoapPDU::printBin() { |
ashleymills | 0:3d62a105fd34 | 1885 | for(int i=0; i<_pduLength; i++) { |
ashleymills | 0:3d62a105fd34 | 1886 | if(i%4==0) { |
ashleymills | 0:3d62a105fd34 | 1887 | printf("\r\n"); |
ashleymills | 0:3d62a105fd34 | 1888 | printf("%.2d ",i); |
ashleymills | 0:3d62a105fd34 | 1889 | } |
ashleymills | 0:3d62a105fd34 | 1890 | CoapPDU::printBinary(_pdu[i]); printf(" "); |
ashleymills | 0:3d62a105fd34 | 1891 | } |
ashleymills | 0:3d62a105fd34 | 1892 | printf("\r\n"); |
ashleymills | 0:3d62a105fd34 | 1893 | } |
ashleymills | 0:3d62a105fd34 | 1894 | |
ashleymills | 0:3d62a105fd34 | 1895 | /// Prints a single byte in binary. |
ashleymills | 0:3d62a105fd34 | 1896 | void CoapPDU::printBinary(uint8_t b) { |
ashleymills | 0:3d62a105fd34 | 1897 | printf("%d%d%d%d%d%d%d%d", |
ashleymills | 0:3d62a105fd34 | 1898 | (b&0x80)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1899 | (b&0x40)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1900 | (b&0x20)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1901 | (b&0x10)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1902 | (b&0x08)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1903 | (b&0x04)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1904 | (b&0x02)&&0x01, |
ashleymills | 0:3d62a105fd34 | 1905 | (b&0x01)&&0x01); |
ashleymills | 0:3d62a105fd34 | 1906 | } |
ashleymills | 0:3d62a105fd34 | 1907 | |
ashleymills | 0:3d62a105fd34 | 1908 | /// Dumps the PDU as a byte sequence to stdout. |
ashleymills | 0:3d62a105fd34 | 1909 | void CoapPDU::print() { |
ashleymills | 0:3d62a105fd34 | 1910 | fwrite(_pdu,1,_pduLength,stdout); |
pnysten | 2:d0d57af6c9df | 1911 | } |