Moved release module into common

src/common.c

@@ -26,6 +26,8 @@
 #include <sys/stat.h>
 
 #include <glib.h>
+#include <curl/curl.h>
+#include <curl/easy.h>
 
 #include "common.h"
 
@@ -33,6 +35,15 @@
 // and page size is at least 4KB
 #define READ_BUF_SIZE 4088
 
+struct curl_data_t
+{
+    char *buffer;
+    size_t size;
+};
+
+static size_t _data_callback(void *ptr, size_t size, size_t nmemb, void *data);
+
+
 // backwards compatibility for GLib version < 2.28
 void
 p_slist_free_full(GSList *items, GDestroyNotify free_func)
@@ -193,3 +204,46 @@ octet_compare(unsigned char *str1, unsigned char *str2)
 
     return 1;
 }
+
+char *
+release_get_latest()
+{
+    char *url = "http://www.profanity.im/profanity_version.txt";
+
+    CURL *handle = curl_easy_init();
+    struct curl_data_t output;
+    output.buffer = NULL;
+    output.size = 0;
+
+    curl_easy_setopt(handle, CURLOPT_URL, url);
+    curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, _data_callback);
+    curl_easy_setopt(handle, CURLOPT_TIMEOUT, 2);
+    curl_easy_setopt(handle, CURLOPT_WRITEDATA, (void *)&output);
+
+    curl_easy_perform(handle);
+    curl_easy_cleanup(handle);
+
+    if (output.buffer != NULL) {
+        output.buffer[output.size++] = '\0';
+        return output.buffer;
+    } else {
+        return NULL;
+    }
+}
+
+static size_t
+_data_callback(void *ptr, size_t size, size_t nmemb, void *data)
+{
+    size_t realsize = size * nmemb;
+    struct curl_data_t *mem = (struct curl_data_t *) data;
+    mem->buffer = realloc(mem->buffer, mem->size + realsize + 1);
+
+    if ( mem->buffer )
+    {
+        memcpy( &( mem->buffer[ mem->size ] ), ptr, realsize );
+        mem->size += realsize;
+        mem->buffer[ mem->size ] = 0;
+    }
+
+    return realsize;
+}