GainSpan Wi-Fi library

Diff: GSwifi.cpp

Revision:

15:5febfc399099

Parent:

14:9e89b922ace1

Child:

16:aea56cce3bf5

--- a/GSwifi.cpp	Fri Oct 05 16:42:50 2012 +0000
+++ b/GSwifi.cpp	Tue Oct 09 16:05:40 2012 +0000
@@ -13,6 +13,7 @@
 #include "dbg.h"
 #include "mbed.h"
 #include "GSwifi.h"
+#include <ctype.h>
 
 #ifdef GS_UART_DIRECT
 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
@@ -1107,7 +1108,7 @@
     return _gs_sock[cid].connect;
 }
 
-int GSwifi::httpGet (Host &host, char *uri, int ssl, onGsReceiveFunc ponGsReceive) {
+int GSwifi::httpGet (Host &host, char *uri, int ssl, char *user, char *pwd, onGsReceiveFunc ponGsReceive) {
     char cmd[GS_CMD_SIZE];
 
     if (! _connect || _status != GSSTAT_READY) return -1;
@@ -1128,20 +1129,94 @@
     command("AT+HTTPCONF=3,close", GSRES_NORMAL); // Connection:
     sprintf(cmd, "AT+HTTPCONF=11,%s", host.getName());  // Host:
     command(cmd, GSRES_NORMAL);
+    if (user && pwd) {
+        char tmp[GS_CMD_SIZE], tmp2[GS_CMD_SIZE];
+        snprintf(tmp, sizeof(tmp), "%s:%s", user, pwd);
+        base64encode(tmp, strlen(tmp), tmp2, sizeof(tmp2));
+        sprintf(cmd, "AT+HTTPCONF=2,Basic %s", tmp2);  // Authorization:
+        command(cmd, GSRES_NORMAL);
+    } else {
+        command("AT+HTTPCONFDEL=2", GSRES_NORMAL);
+    }
+    command("AT+HTTPCONFDEL=5", GSRES_NORMAL);
+    command("AT+HTTPCONFDEL=7", GSRES_NORMAL);
+
     sprintf(cmd, "AT+HTTPOPEN=%d.%d.%d.%d,%d", host.getIp()[0], host.getIp()[1], host.getIp()[2], host.getIp()[3], host.getPort());
     if (ssl) {
         strcat(cmd, ",1");
     }
     if (command(cmd, GSRES_HTTP)) return -1;
-
     newSock(_cid, GSTYPE_CLIENT, GSPROT_HTTPGET, ponGsReceive);
 
-    sprintf(cmd, "AT+HTTPSEND=%d,1,%d,%s", _cid, GS_TIMEOUT / 1000, uri);  // Get:
+    sprintf(cmd, "AT+HTTPSEND=%d,1,%d,%s", _cid, GS_TIMEOUT / 1000, uri);  // GET
     command(cmd, GSRES_NORMAL);
 
     return _cid;
 }
 
+int GSwifi::httpGet (Host &host, char *uri, int ssl, onGsReceiveFunc ponGsReceive) {
+    return httpGet (host, uri, ssl, NULL, NULL, ponGsReceive);
+}
+
+int GSwifi::httpPost (Host &host, char *uri, char *body, int ssl, char *user, char *pwd, onGsReceiveFunc ponGsReceive) {
+    char cmd[GS_CMD_SIZE];
+    int i, len;
+
+    if (! _connect || _status != GSSTAT_READY) return -1;
+
+    if (host.getIp().isNull()) {
+        if (getHostByName(host)) {
+            if (getHostByName(host)) return -1;
+        }
+    }
+    if (host.getPort() == 0) {
+        if (ssl) {
+            host.setPort(443);
+        } else {
+            host.setPort(80);
+        }
+    }
+    len = strlen(body);
+
+    command("AT+HTTPCONF=3,close", GSRES_NORMAL); // Connection:
+    sprintf(cmd, "AT+HTTPCONF=11,%s", host.getName());  // Host:
+    command(cmd, GSRES_NORMAL);
+    sprintf(cmd, "AT+HTTPCONF=5,%d", len);  // Content-Length:
+    command(cmd, GSRES_NORMAL);
+    command("AT+HTTPCONF=7,application/x-www-form-urlencoded", GSRES_NORMAL); // Content-type:
+    if (user && pwd) {
+        char tmp[GS_CMD_SIZE], tmp2[GS_CMD_SIZE];
+        snprintf(tmp, sizeof(tmp), "%s:%s", user, pwd);
+        base64encode(tmp, strlen(tmp), tmp2, sizeof(tmp2));
+        sprintf(cmd, "AT+HTTPCONF=2,Basic %s", tmp2);  // Authorization:
+        command(cmd, GSRES_NORMAL);
+    } else {
+        command("AT+HTTPCONFDEL=2", GSRES_NORMAL);
+    }
+
+    sprintf(cmd, "AT+HTTPOPEN=%d.%d.%d.%d,%d", host.getIp()[0], host.getIp()[1], host.getIp()[2], host.getIp()[3], host.getPort());
+    if (ssl) {
+        strcat(cmd, ",1");
+    }
+    if (command(cmd, GSRES_HTTP)) return -1;
+    newSock(_cid, GSTYPE_CLIENT, GSPROT_HTTPPOST, ponGsReceive);
+
+    sprintf(cmd, "AT+HTTPSEND=%d,3,%d,%s,%d", _cid, GS_TIMEOUT / 1000, uri, len);  // POST
+    command(cmd, GSRES_NORMAL);
+
+    _gs.printf("\x1bH%X", _cid);
+    for (i = 0; i < len; i ++) {
+        _gs_putc(body[i]);
+        DBG("%c", body[i]);
+    }
+
+    return _cid;
+}
+
+int GSwifi::httpPost (Host &host, char *uri, char *body, int ssl, onGsReceiveFunc ponGsReceive) {
+    return httpPost (host, uri, body, ssl, NULL, NULL, ponGsReceive);
+}
+
 int GSwifi::certAdd (char *name, char *cert, int len) {
     int i;
     char cmd[GS_CMD_SIZE];
@@ -1159,6 +1234,55 @@
     return cmdResponse(GSRES_NORMAL, GS_TIMEOUT);
 }
 
+int GSwifi::base64encode (const char *input, int length, char *output, int len) {
+    // code from 
+    // Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+    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;
+}
+
+int GSwifi::urlencode (char *str, char *buf, int len) {
+    // code from 
+    // Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+    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;
+}
+
 int GSwifi::x2i (char c) {
     if (c >= '0' && c <= '9') {
         return c - '0';