big merge

components/spotify/cspot/src/ApResolve.cpp

@@ -0,0 +1,97 @@
+#include "ApResolve.h"
+#include <memory>
+#include <vector>
+#include <string>
+#include <iostream>
+#include <ctype.h>
+#include <cstring>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <sstream>
+#include <fstream>
+#include "Logger.h"
+#include <cJSON.h>
+
+ApResolve::ApResolve() {}
+
+std::string ApResolve::getApList()
+{
+    // hostname lookup
+    struct hostent *host = gethostbyname("apresolve.spotify.com");
+    struct sockaddr_in client;
+
+    if ((host == NULL) || (host->h_addr == NULL))
+    {
+        CSPOT_LOG(error, "apresolve: DNS lookup error");
+        throw std::runtime_error("Resolve failed");
+    }
+    
+    // Prepare socket
+    bzero(&client, sizeof(client));
+    client.sin_family = AF_INET;
+    client.sin_port = htons(80);
+    memcpy(&client.sin_addr, host->h_addr, host->h_length);
+
+    int sockFd = socket(AF_INET, SOCK_STREAM, 0);
+
+    // Connect to spotify's server
+    if (connect(sockFd, (struct sockaddr *)&client, sizeof(client)) < 0)
+    {
+        close(sockFd);
+        CSPOT_LOG(error, "Could not connect to apresolve");
+        throw std::runtime_error("Resolve failed");
+    }
+
+    // Prepare HTTP get header
+    std::stringstream ss;
+    ss << "GET / HTTP/1.1\r\n"
+       << "Host: apresolve.spotify.com\r\n"
+       << "Accept: application/json\r\n"
+       << "Connection: close\r\n"
+       << "\r\n\r\n";
+
+    std::string request = ss.str();
+
+    // Send the request
+    if (send(sockFd, request.c_str(), request.length(), 0) != (int)request.length())
+    {
+        CSPOT_LOG(error, "apresolve: can't send request");
+        throw std::runtime_error("Resolve failed");
+    }
+
+    char cur;
+
+    // skip read till json data
+    while (read(sockFd, &cur, 1) > 0 && cur != '{');
+
+    auto jsonData = std::string("{");
+
+    // Read json structure
+    while (read(sockFd, &cur, 1) > 0)
+    {
+        jsonData += cur;
+    }
+
+    return jsonData;
+}
+
+std::string ApResolve::fetchFirstApAddress()
+{
+    // Fetch json body
+    auto jsonData = getApList();
+
+    // Use cJSON to get first ap address
+    auto root = cJSON_Parse(jsonData.c_str());
+    auto apList = cJSON_GetObjectItemCaseSensitive(root, "ap_list");
+    auto firstAp = cJSON_GetArrayItem(apList, 0);
+    auto data = std::string(firstAp->valuestring);
+
+    // release cjson memory
+    cJSON_Delete(root);
+
+    return data;
+}