Diff: main.cpp

Revision:

3:7ad266ae429f

Parent:

2:270e2d0bb85a

--- a/main.cpp	Thu Aug 30 15:42:06 2012 +0000
+++ b/main.cpp	Sun Dec 22 05:43:22 2013 +0000
@@ -1,79 +1,67 @@
 #include "mbed.h"
 #include "EthernetInterface.h"
 #include "HTTPClient.h"
+#include <string.h>
+#include <ctype.h>
+
+#define URL "https://www.facebook.com/mbedmicro"
 
 EthernetInterface eth;
-HTTPClient http;
-char str[512];
+
+int urlencode (char *str, char *buf, int len);
+
+int facebookLikes (char *target) {
+    HTTPClient http;
+    char url[256], buf[1024];
+    char *s;
+
+    strcpy(url, "http://graph.facebook.com/");
+    urlencode(target, &url[strlen(url)], sizeof(url) - strlen(url));
+//    printf("url: %s\r\n", url);
+
+    if (http.get(url, buf, sizeof(buf))) return -1;
+
+    s = strstr(buf, "\"likes\":");
+    if (s == NULL) return -1;
+    s += 8;
+    return atoi(s);
+}
 
 int main() 
 {
     eth.init(); //Use DHCP
+    eth.connect();
+    printf("IP: %s\r\n", eth.getIPAddress());
 
-    eth.connect();
-    
-    //GET data
-    printf("\nTrying to fetch page...\n");
-    int ret = http.get("http://mbed.org/media/uploads/donatien/hello.txt", str, 128);
-    if (!ret)
-    {
-      printf("Page fetched successfully - read %d characters\n", strlen(str));
-      printf("Result: %s\n", str);
-    }
-    else
-    {
-      printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
-    }
-    
-    //POST data
-    HTTPMap map;
-    HTTPText inText(str, 512);
-    map.put("Hello", "World");
-    map.put("test", "1234");
-    printf("\nTrying to post data...\n");
-    ret = http.post("http://httpbin.org/post", map, &inText);
-    if (!ret)
-    {
-      printf("Executed POST successfully - read %d characters\n", strlen(str));
-      printf("Result: %s\n", str);
-    }
-    else
-    {
-      printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
-    }
-    
-    //PUT data
-    strcpy(str, "This is a PUT test!");
-    HTTPText outText(str);
-    //HTTPText inText(str, 512);
-    printf("\nTrying to put resource...\n");
-    ret = http.put("http://httpbin.org/put", outText, &inText);
-    if (!ret)
-    {
-      printf("Executed PUT successfully - read %d characters\n", strlen(str));
-      printf("Result: %s\n", str);
-    }
-    else
-    {
-      printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
-    }
-    
-    //DELETE data
-    //HTTPText inText(str, 512);
-    printf("\nTrying to delete resource...\n");
-    ret = http.del("http://httpbin.org/delete", &inText);
-    if (!ret)
-    {
-      printf("Executed DELETE successfully - read %d characters\n", strlen(str));
-      printf("Result: %s\n", str);
-    }
-    else
-    {
-      printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode());
-    }
+    printf("Target: %s\r\n", URL);
+    printf("Likes: %d\r\n", facebookLikes(URL));
     
     eth.disconnect();  
+}
 
-    while(1) {
+
+int to_hex (int code) {
+  static char hex[] = "0123456789abcdef";
+  return hex[code & 15];
+}
+
+/* urlencode code from 
+ * Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ */
+int urlencode (char *str, char *buf, int len) {
+//  char *pstr = str, *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
+    char *pstr = str, *pbuf = buf;
+
+    if (len < (strlen(str) * 3 + 1)) return -1;
+    while (*pstr) {
+        if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~') 
+            *pbuf++ = *pstr;
+        else if (*pstr == ' ') 
+            *pbuf++ = '+';
+        else 
+            *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
+        pstr++;
     }
+    *pbuf = '\0';
+    return 0;
 }