Diff: TinyHTTP_a3gs.cpp

Revision:

0:864cc2bec4bf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TinyHTTP_a3gs.cpp	Tue Mar 10 01:18:38 2015 +0000
@@ -0,0 +1,128 @@
+/*
+ * mbed Tiny HTTP Client for Ethernet Interface Library
+ * Copyright (c) 2012 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file
+ * @brief Tiny HTTP Client
+ */
+
+#include "mbed.h"
+#include "TinyHTTP_a3gs.h"
+#include "a3gs.h"
+#include <ctype.h>
+
+//#define DEBUG
+
+extern A3GS a3gs;
+static onHttpReceiveFunc onHttpReceive = NULL;
+
+// Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+int base64enc(const char *input, unsigned int length, char *output, int len) {
+  static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+  unsigned int c, c1, c2, c3;
+
+  if (len < ((((length-1)/3)+1)<<2)) return -1;
+  for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
+    c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
+    c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
+    c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
+
+    c = ((c1 & 0xFC) >> 2);
+    output[j+0] = base64[c];
+    c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
+    output[j+1] = base64[c];
+    c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
+    output[j+2] = (length>i+1)?base64[c]:'=';
+    c = (c3 & 0x3F);
+    output[j+3] = (length>i+2)?base64[c]:'=';
+  }
+  output[(((length-1)/3)+1)<<2] = '\0';
+  return 0;
+}
+
+// Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+int urlencode(char *str, char *buf, int len) {
+  static const char to_hex[] = "0123456789ABCDEF";
+//  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) & 0x0f];
+      *pbuf++ = to_hex[*pstr & 0x0f];
+    }
+    pstr++;
+  }
+  *pbuf = '\0';
+  return 0;
+}
+
+void createauth (char *user, char *pwd, char *buf, int len) {
+    char tmp[80];
+
+    strncpy(buf, "Authorization: Basic ", len);
+    snprintf(tmp, sizeof(tmp), "%s:%s", user, pwd);
+    base64enc(tmp, strlen(tmp), &buf[strlen(buf)], len - strlen(buf));
+    strncat(buf, "\r\n", len - strlen(buf));
+}
+
+int httpRequest (int method, char *host, int port, char *uri, char *head, char *body, onHttpReceiveFunc func) {
+    char buf[1000];
+    int i, ret = -1;
+
+    onHttpReceive = func;
+
+    if (a3gs.connectTCP(host, port)) return -1;
+
+#ifdef DEBUG
+        printf("connected\r\n");
+#endif
+
+    // send request
+    if (method == METHOD_POST) {
+        a3gs.write((uint8_t*)"POST ", 5);
+    } else {
+        a3gs.write((uint8_t*)"GET ", 4);
+    }
+    a3gs.write((uint8_t*)uri, strlen(uri));
+    a3gs.write((uint8_t*)" HTTP/1.1\r\nHost: ", 17);
+    a3gs.write((uint8_t*)host, strlen(host));
+    a3gs.write((uint8_t*)"\r\n", 2);
+    a3gs.write((uint8_t*)"Connection: close\r\n", 19);
+    if (head) {
+        a3gs.write((uint8_t*)head, strlen(head));
+    }
+    if (method == METHOD_POST) {
+        sprintf(buf, "Content-Length: %d\r\n", strlen(body));
+        a3gs.write((uint8_t*)buf, strlen(buf));
+    }
+    a3gs.write((uint8_t*)"\r\n", 2);
+
+    // post method
+    if (method == METHOD_POST && body) {
+        a3gs.write((uint8_t*)body, strlen(body));
+    }
+
+    printf("wait for response\r\n");
+    // recv
+    int err = 0;
+    for (;;) {
+        i = a3gs.read(buf, sizeof(buf) - 1);
+        if (i <= 0) break;
+
+        if (onHttpReceive != NULL) onHttpReceive(buf, i);
+    }
+    ret = 0;
+
+    a3gs.disconnectTCP();
+
+    return ret;
+}