From f3b7b7d34b3bf2b1be18914577c96b66dead379a Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Tue, 12 Dec 2017 17:33:03 +0100
Subject: Download and extract missing dependencies from github

Using libcurl and libarchive
---
 src/curl.cpp | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/curl.cpp

(limited to 'src/curl.cpp')

diff --git a/src/curl.cpp b/src/curl.cpp
new file mode 100644
index 0000000..f39cab8
--- /dev/null
+++ b/src/curl.cpp
@@ -0,0 +1,87 @@
+#include "../include/curl.hpp"
+#include "../include/env.hpp"
+#include <curl/curl.h>
+#include <cstring>
+
+using namespace std;
+
+#ifdef DEBUG
+#define CURL_DEBUG
+#endif
+
+#undef CURL_DEBUG
+
+class CurlSession
+{
+public:
+    CurlSession()
+    {
+        curl_global_init(CURL_GLOBAL_ALL);
+    }
+};
+
+static CurlSession curlSession;
+
+namespace sibs
+{
+    // TODO: Instead of writing to file, reading from file and extracting it;
+    // we can extract to file directly by putting libarchive code here
+    size_t writeToFile(void *ptr, size_t size, size_t nmemb, void *stream)
+    {
+        return fwrite(ptr, size, nmemb, (FILE*)stream);
+    }
+
+    Result<bool> curl::downloadFile(const char *url, const char *filepath)
+    {
+        CURL *curl_handle = curl_easy_init();
+        curl_easy_setopt(curl_handle, CURLOPT_URL, url);
+#ifdef CURL_DEBUG
+        long verbose = 1L;
+        long noProgressMeter = 0L;
+#else
+        long verbose = 0L;
+        long noProgressMeter = 1L;
+#endif
+        curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, verbose);
+        curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, noProgressMeter);
+        curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, writeToFile);
+        curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, true);
+
+        FILE *file = fopen(filepath, "wb");
+        if(!file)
+        {
+            int error = errno;
+            curl_easy_cleanup(curl_handle);
+
+            string errMsg = "Failed to open file for writing: ";
+            errMsg += filepath;
+            if(error != 0)
+            {
+                errMsg += "; Reason: ";
+                errMsg += strerror(error);
+                return Result<bool>::Err(errMsg);
+            }
+            else
+            {
+                return Result<bool>::Err(errMsg);
+            }
+        }
+
+        curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, file);
+        printf("Downloading from url: %s\n", url);
+        CURLcode curlResponse = curl_easy_perform(curl_handle);
+        curl_easy_cleanup(curl_handle);
+        fclose(file);
+
+        if(curlResponse != CURLE_OK)
+        {
+            string errMsg = "Failed to download file from url: ";
+            errMsg += url;
+            errMsg += "\nReason: ";
+            errMsg += curl_easy_strerror(curlResponse);
+            return Result<bool>::Err(errMsg);
+        }
+
+        return Result<bool>::Ok(true);
+    }
+}
\ No newline at end of file
-- 
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