I have made a start

I have done some work on opening a socket and waiting for a connection.
This can be read line by line and I have started a request struct that
it will accept.

Also started on some docs. Not much is yet working. I am going to start
learning µnit for unit tests:

https://nemequ.github.io/munit/

src/config.c

@@ -0,0 +1,64 @@
+#include "config.h"
+
+/*
+ * Checks if the given path exists by calling stat().
+ *
+ */
+static bool path_exists(const char *path) {
+    struct stat buf;
+    return (stat(path, &buf) == 0);
+}
+
+/*
+ * This function resolves ~ in pathnames.
+ */
+static char* resolveTilde(const char *path) {
+	static glob_t globbuf;
+
+	int res = glob(path, GLOB_TILDE, NULL, &globbuf);
+	/* no match, or many wildcard matches are bad */
+	if (res == GLOB_NOMATCH)
+		return strdup(path);
+	else if (res != 0) {
+		printf("glob() failed\n");
+		return NULL;
+	} else {
+		return strdup(globbuf.gl_pathv[0]);
+	}
+	globfree(&globbuf);
+}
+
+/*
+* Returns a pointer to a config object containing defaults
+*/
+Config* configDefaults(){
+	Config *conf = malloc( sizeof( Config ) );
+	conf->database = "proxy.sqlite";
+	conf->port = 8080;
+	conf->localConfig = "proxy.conf";
+	conf->userConfig = getDefaultUserConfigLoc();
+	
+	return conf;
+}
+
+char* getConfigDir(){
+	char *xdg_config_home;
+	if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
+		xdg_config_home = resolveTilde("~/.config");
+	
+	return xdg_config_home;
+}
+
+char* getDefaultUserConfigLoc(){
+	char *configDir = getConfigDir();
+	char *configFile[strlen(configDir) + 11];
+
+	memset(configFile, '\0', strlen(configDir) + 11);
+
+	strcpy( configFile, configDir );
+
+	strcat( configFile, configDir );
+
+	return configFile;
+}
+