1 files changed, 84 insertions, 0 deletions
diff --git a/src/async/mx/MCResolveProviderUsingMXRecord.cpp b/src/async/mx/MCResolveProviderUsingMXRecord.cpp
new file mode 100644
index 00000000..00d3e036
--- /dev/null
+++ b/src/async/mx/MCResolveProviderUsingMXRecord.cpp
@@ -0,0 +1,84 @@
+//
+//  MCFetchAsyncMXRecord.cpp
+//  mailcore2
+//
+//  Created by Christopher Hockley on 29/01/15.
+//  Copyright (c) 2015 MailCore. All rights reserved.
+//
+
+#include "MCResolveProviderUsingMXRecord.h"
+
+#include "MCMailProvider.h"
+#include "MCMailProvidersManager.h"
+
+#include <arpa/inet.h>
+#include <resolv.h>
+
+using namespace mailcore;
+
+ResolveProviderUsingMXRecord::ResolveProviderUsingMXRecord()
+{
+    mHostname = NULL;
+    mProvider = NULL;
+}
+
+ResolveProviderUsingMXRecord::~ResolveProviderUsingMXRecord()
+{
+     MC_SAFE_RELEASE(mProvider);
+}
+
+void ResolveProviderUsingMXRecord::setHostname(String * hostname)
+{
+    MC_SAFE_REPLACE_COPY(String, mHostname, hostname);
+}
+
+String * ResolveProviderUsingMXRecord::hostname()
+{
+    return mHostname;
+}
+
+MailProvider * ResolveProviderUsingMXRecord::provider()
+{
+    return mProvider;
+}
+
+void ResolveProviderUsingMXRecord::main()
+{
+    unsigned char response[NS_PACKETSZ];
+    ns_msg handle;
+    ns_rr rr;
+    int len;
+    char dispbuf[4096];
+    
+    if (((len = res_search(MCUTF8(mHostname), ns_c_in, ns_t_mx, response, sizeof(response))) >= 0) and
+        (ns_initparse(response, len, &handle) >= 0) and
+        (ns_msg_count(handle, ns_s_an) >= 0)) {
+    
+        CFBundleRef mainBundle = CFBundleGetMainBundle();
+        CFURLRef imageURL = CFBundleCopyResourceURL(mainBundle, CFSTR("providers"), CFSTR("json"), NULL);
+        CFStringRef imagePath = CFURLCopyFileSystemPath(imageURL, kCFURLPOSIXPathStyle);
+        CFStringEncoding encodingMethod = CFStringGetSystemEncoding();
+        const char *path = CFStringGetCStringPtr(imagePath, encodingMethod);
+    
+        String * sPath = String::stringWithUTF8Characters(path);
+    
+        MailProvidersManager::sharedManager()->registerProvidersWithFilename(sPath);
+    
+        for (int ns_index = 0; ns_index < len; ns_index++) {
+            if (ns_parserr(&handle, ns_s_an, ns_index, &rr)) {
+                /* WARN: ns_parserr failed */
+                continue;
+            }
+            ns_sprintrr (&handle, &rr, NULL, NULL, dispbuf, sizeof (dispbuf));
+            if (ns_rr_class(rr) == ns_c_in and ns_rr_type(rr) == ns_t_mx) {
+                char mxname[4096];
+                dn_expand(ns_msg_base(handle), ns_msg_base(handle) + ns_msg_size(handle), ns_rr_rdata(rr) + NS_INT16SZ, mxname, sizeof(mxname));
+                String * str = String::stringWithUTF8Characters(mxname);
+                MailProvider *provider = MailProvidersManager::sharedManager()->providerForMX(str);
+                if (provider)
+                    mProvider = provider;
+            }
+        }
+    }
+}
+