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@yagihiro
yagihiro committed Mar 9, 2009
1 parent ea8f1d5 commit 70087ff
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89 changes: 89 additions & 0 deletions Twitter/Base64.cpp
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/*
Base64.h - base64 encoder
Copyright (c) 2009 Hiroki Yagita.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
The file contains slightly modified base64 encode algorithm from
Bob Trower's b64.c file.
http://base64.sourceforge.net/
*/
/*
LICENCE: Copyright (C) 2001 Alexey Klimkin <klimkin@mcst.ru>
Copyright (C) 2001 Bob Trower, Trantor Standard Systems Inc.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall
be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "Base64.h"

static const char cb64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

static void encodeblock(unsigned char in[3], unsigned char out[4], int len) {
out[0] = cb64[ in[0] >> 2 ];
out[1] = cb64[ ((in[0] & 0x03) << 4) | ((in[1] & 0xf0) >> 4) ];
out[2] = (unsigned char) (len > 1 ? cb64[ ((in[1] & 0x0f) << 2) | ((in[2] & 0xc0) >> 6) ] : '=');
out[3] = (unsigned char) (len > 2 ? cb64[ in[2] & 0x3f ] : '=');
}

void base64(char *dst, const char *src, int size) {
unsigned char in[3], *out = (unsigned char *)dst;
int i, len;

while (size > 0) {
len = 0;
for (i = 0; i < 3; i++, size--) {
if (size > 0) {
len++;
in[i] = src[i];
}
else
in[i] = 0;
}
src += 3;
if (len) {
encodeblock(in, out, len);
out += 4;
}
}
*out = '\0';
}

69 changes: 69 additions & 0 deletions Twitter/Base64.h
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/*
Base64.h - base64 encoder
Copyright (c) 2009 Hiroki Yagita.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
The file contains slightly modified base64 encode algorithm from
Bob Trower's b64.c file.
http://base64.sourceforge.net/
*/
/*
LICENCE: Copyright (C) 2001 Alexey Klimkin <klimkin@mcst.ru>
Copyright (C) 2001 Bob Trower, Trantor Standard Systems Inc.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall
be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef BASE64_h
#define BASE64_h

#ifdef __cplusplus
extern "C" {
#endif

void base64(char *dst, const char *src, int size);

#ifdef __cplusplus
}
#endif

#endif
169 changes: 169 additions & 0 deletions Twitter/Twitter.h
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/*
Twitter.h - twitter interface for arduino
Copyright (c) 2009 Hiroki Yagita.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef TWITTER_h
#define TWITTER_h
#include <stdlib.h>
#include <string.h>
#include <HardwareSerial.h>
#include "Base64.h"
#include "../Ethernet/Client.h"

const char *CRLF = "\r\n";
uint8_t TWITTER_IPADDR[] = { 128,121,146,100 };

class TwitterClass {
public:
TwitterClass():
cli_(TWITTER_IPADDR, 80),
encoded_account_(0),
initialized_(false),
status_() {}
~TwitterClass() {
destroy_encoded_account();
}

void begin(const char *username, const char *password) {
const char *c = ":";
int len = strlen(username) + strlen(c) + strlen(password) + 1;

char *buf = (char *)malloc(len);
memset(buf, 0, len);

strcat(buf, username);
strcat(buf, c);
strcat(buf, password);

destroy_encoded_account();
encoded_account_ = (char *)malloc(len*2);
memset(encoded_account_, 0, len*2);
base64(encoded_account_, buf, len - 1);
free(buf);

initialized_ = true;
}

bool update(const char *msg) {
if (!initialized_) return false;
if (!cli_.connect()) return false;

status_.setup(msg);
print("POST /statuses/update.json HTTP/1.1\r\n");
print("Host: twitter.com\r\n");
print_authorization_line();
print(status_.length_);
print(CRLF);
print(status_.status_);
print(CRLF);
while (!cli_.available())
;
return true;
}

void print_response() {
while (cli_.connected()) {
if (cli_.available()) {
char c = cli_.read();
Serial.print(c);
}
}

cli_.stop();
}

private:

void print(const char *s) {
Serial.print(s);
cli_.print(s);
}

void print_authorization_line() {
print("Authorization: Basic ");
print(encoded_account_);
print(CRLF);
}

void destroy_encoded_account() {
if (encoded_account_) {
free(encoded_account_);
encoded_account_ = 0;
}
}

Client cli_;
char *encoded_account_;
bool initialized_;

struct Status {
char *length_;
char *status_;

Status(): length_(0), status_(0) {}
~Status() { teardown(); }

void setup(const char *msg) {
teardown();
setup_status(msg);
setup_length();
}
void teardown() {
if (length_) {
free(length_);
length_ = 0;
}
if (status_) {
free(status_);
status_ = 0;
}
}
void setup_status(const char *msg) {
const char *tag = "status=";
int len = strlen(tag) + strlen(msg) + strlen(CRLF);

status_ = (char *)malloc(len + 1);
strcpy(status_, tag);
strcat(status_, msg);
strcat(status_, CRLF);
}

int setup_length() {
const char *tag = "Content-Length: ";
char len_s[4];

itoa(strlen(status_), len_s, 10);

int len = strlen(tag) + strlen(len_s) + strlen(CRLF);

length_ = (char *)malloc(len + 1);
strcpy(length_, tag);
strcat(length_, len_s);
strcat(length_, CRLF);
}
} status_;
};

TwitterClass Twitter;

#endif
25 changes: 25 additions & 0 deletions Twitter/keywords.txt
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#######################################
# Syntax Coloring Map For Twitter
#######################################

#######################################
# Datatypes (KEYWORD1)
#######################################

#######################################
# Methods and Functions (KEYWORD2)
#######################################
begin KEYWORD2
update KEYWORD2
base64 KEYWORD2

#######################################
# Instances (KEYWORD2)
#######################################

Twitter KEYWORD2

#######################################
# Constants (LITERAL1)
#######################################

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