Suga koubou / Mbed 2 deprecated Facebook_likes

It get the like count of Facebook.

Dependencies:   EthernetInterface HTTPClient mbed-rtos mbed

Fork of HTTPClient_HelloWorld by Donatien Garnier

main.cpp@3:7ad266ae429f, 2013-12-22 (annotated)

Committer:
okini3939
Date:
Sun Dec 22 05:43:22 2013 +0000
Revision:
3:7ad266ae429f
Parent:
2:270e2d0bb85a 
1st build

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:0e0debc29569 1 #include "mbed.h"
donatien 0:0e0debc29569 2 #include "EthernetInterface.h"
donatien 0:0e0debc29569 3 #include "HTTPClient.h"
okini3939 3:7ad266ae429f 4 #include <string.h>
okini3939 3:7ad266ae429f 5 #include <ctype.h>
okini3939 3:7ad266ae429f 6
okini3939 3:7ad266ae429f 7 #define URL "https://www.facebook.com/mbedmicro"
donatien 0:0e0debc29569 8
donatien 1:d263603373ac 9 EthernetInterface eth;
okini3939 3:7ad266ae429f 10
okini3939 3:7ad266ae429f 11 int urlencode (char *str, char *buf, int len);
okini3939 3:7ad266ae429f 12
okini3939 3:7ad266ae429f 13 int facebookLikes (char *target) {
okini3939 3:7ad266ae429f 14 HTTPClient http;
okini3939 3:7ad266ae429f 15 char url[256], buf[1024];
okini3939 3:7ad266ae429f 16 char *s;
okini3939 3:7ad266ae429f 17
okini3939 3:7ad266ae429f 18 strcpy(url, "http://graph.facebook.com/");
okini3939 3:7ad266ae429f 19 urlencode(target, &url[strlen(url)], sizeof(url) - strlen(url));
okini3939 3:7ad266ae429f 20 // printf("url: %s\r\n", url);
okini3939 3:7ad266ae429f 21
okini3939 3:7ad266ae429f 22 if (http.get(url, buf, sizeof(buf))) return -1;
okini3939 3:7ad266ae429f 23
okini3939 3:7ad266ae429f 24 s = strstr(buf, "\"likes\":");
okini3939 3:7ad266ae429f 25 if (s == NULL) return -1;
okini3939 3:7ad266ae429f 26 s += 8;
okini3939 3:7ad266ae429f 27 return atoi(s);
okini3939 3:7ad266ae429f 28 }
donatien 1:d263603373ac 29
donatien 0:0e0debc29569 30 int main()
donatien 0:0e0debc29569 31 {
donatien 0:0e0debc29569 32 eth.init(); //Use DHCP
okini3939 3:7ad266ae429f 33 eth.connect();
okini3939 3:7ad266ae429f 34 printf("IP: %s\r\n", eth.getIPAddress());
donatien 0:0e0debc29569 35
okini3939 3:7ad266ae429f 36 printf("Target: %s\r\n", URL);
okini3939 3:7ad266ae429f 37 printf("Likes: %d\r\n", facebookLikes(URL));
donatien 2:270e2d0bb85a 38
donatien 0:0e0debc29569 39 eth.disconnect();
okini3939 3:7ad266ae429f 40 }
donatien 0:0e0debc29569 41
okini3939 3:7ad266ae429f 42
okini3939 3:7ad266ae429f 43 int to_hex (int code) {
okini3939 3:7ad266ae429f 44 static char hex[] = "0123456789abcdef";
okini3939 3:7ad266ae429f 45 return hex[code & 15];
okini3939 3:7ad266ae429f 46 }
okini3939 3:7ad266ae429f 47
okini3939 3:7ad266ae429f 48 /* urlencode code from
okini3939 3:7ad266ae429f 49 * Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
okini3939 3:7ad266ae429f 50 */
okini3939 3:7ad266ae429f 51 int urlencode (char *str, char *buf, int len) {
okini3939 3:7ad266ae429f 52 // char *pstr = str, *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
okini3939 3:7ad266ae429f 53 char *pstr = str, *pbuf = buf;
okini3939 3:7ad266ae429f 54
okini3939 3:7ad266ae429f 55 if (len < (strlen(str) * 3 + 1)) return -1;
okini3939 3:7ad266ae429f 56 while (*pstr) {
okini3939 3:7ad266ae429f 57 if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')
okini3939 3:7ad266ae429f 58 *pbuf++ = *pstr;
okini3939 3:7ad266ae429f 59 else if (*pstr == ' ')
okini3939 3:7ad266ae429f 60 *pbuf++ = '+';
okini3939 3:7ad266ae429f 61 else
okini3939 3:7ad266ae429f 62 *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
okini3939 3:7ad266ae429f 63 pstr++;
donatien 0:0e0debc29569 64 }
okini3939 3:7ad266ae429f 65 *pbuf = '\0';
okini3939 3:7ad266ae429f 66 return 0;
donatien 0:0e0debc29569 67 }