1 | /*
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2 | Twitter.cpp - Arduino library to Post messages to Twitter using OAuth.
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3 | Copyright (c) NeoCat 2010-2011. All right reserved.
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4 |
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5 | This library is distributed in the hope that it will be useful,
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6 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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7 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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8 | */
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9 |
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10 | // ver1.2 - Use <string.h>
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11 | // ver1.3 - Support IDE 1.0
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12 |
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13 | #include <string.h>
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14 | #include "Twitter.h"
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15 |
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16 | #define LIB_DOMAIN "arduino-tweet.appspot.com"
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17 |
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18 | #if defined(ARDUINO) && ARDUINO < 100
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19 | static uint8_t server[] = {0,0,0,0}; // IP address of LIB_DOMAIN
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20 | Twitter::Twitter(const char *token) : client(server, 80), token(token)
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21 | {
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22 | }
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23 | #else
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24 | Twitter::Twitter(const char *token) : token(token)
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25 | {
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26 | }
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27 | #endif
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28 |
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29 | bool Twitter::post(const char *msg)
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30 | {
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31 | #if defined(ARDUINO) && ARDUINO < 100
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32 | DNSError err = EthernetDNS.resolveHostName(LIB_DOMAIN, server);
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33 | if (err != DNSSuccess) {
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34 | return false;
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35 | }
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36 | #endif
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37 | parseStatus = 0;
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38 | statusCode = 0;
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39 | #if defined(ARDUINO) && ARDUINO < 100
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40 | if (client.connect()) {
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41 | #else
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42 | if (client.connect(LIB_DOMAIN, 80)) {
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43 | #endif
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44 | client.println("POST http://" LIB_DOMAIN "/update HTTP/1.0");
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45 | client.print("Content-Length: ");
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46 | client.println(strlen(msg)+strlen(token)+14);
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47 | client.println();
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48 | client.print("token=");
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49 | client.print(token);
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50 | client.print("&status=");
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51 | client.println(msg);
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52 | } else {
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53 | return false;
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54 | }
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55 | return true;
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56 | }
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57 |
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58 | bool Twitter::checkStatus(Print *debug)
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59 | {
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60 | if (!client.connected()) {
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61 | if (debug)
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62 | while(client.available())
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63 | debug->print((char)client.read());
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64 | client.flush();
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65 | client.stop();
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66 | return false;
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67 | }
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68 | if (!client.available())
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69 | return true;
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70 | char c = client.read();
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71 | if (debug)
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72 | debug->print(c);
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73 | switch(parseStatus) {
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74 | case 0:
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75 | if (c == ' ') parseStatus++; break; // skip "HTTP/1.1 "
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76 | case 1:
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77 | if (c >= '0' && c <= '9') {
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78 | statusCode *= 10;
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79 | statusCode += c - '0';
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80 | } else {
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81 | parseStatus++;
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82 | }
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83 | }
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84 | return true;
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85 | }
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86 |
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87 | int Twitter::wait(Print *debug)
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88 | {
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89 | while (checkStatus(debug));
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90 | return statusCode;
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91 | }
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