cleanup

ext/session/mod_files.c

@@ -49,52 +49,38 @@ ps_module ps_mod_files = {
 	PS_MOD(files)
 };
 
-#define PS_FILES_DATA ps_files *data = PS_GET_MOD_DATA()
-
-PS_OPEN_FUNC(files)
-{
-	ps_files *data;
-	char *p;
-
-	data = ecalloc(sizeof(*data), 1);
-	PS_SET_MOD_DATA(data);
-
-	data->fd = -1;
-	if((p = strchr(save_path, ':'))) {
-		data->dirdepth = strtol(save_path, NULL, 10);
-		save_path = p + 1;
-	}
-	data->basedir = estrdup(save_path);
-	
-	return SUCCESS;
-}
-
-PS_CLOSE_FUNC(files)
-{
-	PS_FILES_DATA;
-
-	if(data->fd > -1) close(data->fd);
-	if(data->lastkey) efree(data->lastkey);
-	efree(data->basedir);
-	efree(data);
-	*mod_data = NULL;
-
-	return SUCCESS;
-}
-
 #if WIN32|WINNT
 #define DIR_DELIMITER '\\'
 #else
 #define DIR_DELIMITER '/'
 #endif
 
-static void _ps_files_open(ps_files *data, const char *key)
+static char *_ps_files_path_create(char *buf, size_t buflen, ps_files *data, const char *key)
 {
-	char buf[MAXPATHLEN];
+	int keylen;
 	const char *p;
 	int i;
 	int n;
-	int keylen;
+	
+	keylen = strlen(key);
+	if(keylen <= data->dirdepth || buflen < 
+			(strlen(data->basedir) + 2 * data->dirdepth + keylen + 5 + sizeof(FILE_PREFIX))) 
+		return NULL;
+	p = key;
+	n = sprintf(buf, "%s/", data->basedir);
+	for(i = 0; i < data->dirdepth; i++) {
+		buf[n++] = *p++;
+		buf[n++] = DIR_DELIMITER;
+	}
+	strcat(buf, FILE_PREFIX);
+	strcat(buf, p);
+	
+	return buf;
+}
+
+static void _ps_files_open(ps_files *data, const char *key)
+{
+	char buf[MAXPATHLEN];
 
 	if(data->fd < 0 || !data->lastkey || strcmp(key, data->lastkey)) {
 		if(data->lastkey) {
@@ -105,19 +91,9 @@ static void _ps_files_open(ps_files *data, const char *key)
 			close(data->fd);
 			data->fd = -1;
 		}
-
-		keylen = strlen(key);
-		if(keylen <= data->dirdepth || MAXPATHLEN < 
-				(strlen(data->basedir) + 2 * data->dirdepth + keylen + 5 + sizeof(FILE_PREFIX))) 
+		
+		if(!_ps_files_path_create(buf, sizeof(buf), data, key))
 			return;
-		p = key;
-		n = sprintf(buf, "%s/", data->basedir);
-		for(i = 0; i < data->dirdepth; i++) {
-			buf[n++] = *p++;
-			buf[n++] = DIR_DELIMITER;
-		}
-		strcat(buf, FILE_PREFIX);
-		strcat(buf, p);
 		
 		data->lastkey = estrdup(key);
 		
@@ -137,6 +113,69 @@ static void _ps_files_open(ps_files *data, const char *key)
 	}
 }
 
+static void _ps_files_cleanup_dir(const char *dirname, int maxlifetime)
+{
+	DIR *dir;
+	struct dirent *entry;
+	struct stat sbuf;
+	char buf[MAXPATHLEN];
+	time_t now;
+
+	dir = opendir(dirname);
+	if(!dir) return;
+
+	time(&now);
+
+	while((entry = readdir(dir))) {
+		/* does the file start with our prefix? */
+		if(!strncmp(entry->d_name, FILE_PREFIX, sizeof(FILE_PREFIX) - 1) &&
+				/* create full path */
+				snprintf(buf, MAXPATHLEN, "%s%c%s", dirname, DIR_DELIMITER,
+					entry->d_name) > 0 &&
+				/* stat the directory entry */
+				stat(buf, &sbuf) == 0 &&
+				/* is it expired? */
+				(now - sbuf.st_atime) > maxlifetime) {
+			unlink(buf);
+		}
+	}
+
+	closedir(dir);
+}
+
+#define PS_FILES_DATA ps_files *data = PS_GET_MOD_DATA()
+
+PS_OPEN_FUNC(files)
+{
+	ps_files *data;
+	char *p;
+
+	data = ecalloc(sizeof(*data), 1);
+	PS_SET_MOD_DATA(data);
+
+	data->fd = -1;
+	if((p = strchr(save_path, ':'))) {
+		data->dirdepth = strtol(save_path, NULL, 10);
+		save_path = p + 1;
+	}
+	data->basedir = estrdup(save_path);
+	
+	return SUCCESS;
+}
+
+PS_CLOSE_FUNC(files)
+{
+	PS_FILES_DATA;
+
+	if(data->fd > -1) close(data->fd);
+	if(data->lastkey) efree(data->lastkey);
+	efree(data->basedir);
+	efree(data);
+	*mod_data = NULL;
+
+	return SUCCESS;
+}
+
 PS_READ_FUNC(files)
 {
 	int n;
@@ -187,42 +226,14 @@ PS_DESTROY_FUNC(files)
 	char buf[MAXPATHLEN];
 	PS_FILES_DATA;
 
-	snprintf(buf, MAXPATHLEN, "%s/%s", data->basedir, key);
+	if(!_ps_files_path_create(buf, sizeof(buf), data, key))
+		return FAILURE;
+	
 	unlink(buf);
 
 	return SUCCESS;
 }
 
-static void ps_files_cleanup_dir(const char *dirname, int maxlifetime)
-{
-	DIR *dir;
-	struct dirent *entry;
-	struct stat sbuf;
-	char buf[MAXPATHLEN];
-	time_t now;
-
-	dir = opendir(dirname);
-	if(!dir) return;
-
-	time(&now);
-
-	while((entry = readdir(dir))) {
-		/* does the file start with our prefix? */
-		if(!strncmp(entry->d_name, FILE_PREFIX, sizeof(FILE_PREFIX) - 1) &&
-				/* create full path */
-				snprintf(buf, MAXPATHLEN, "%s%c%s", dirname, DIR_DELIMITER,
-					entry->d_name) > 0 &&
-				/* stat the directory entry */
-				stat(buf, &sbuf) == 0 &&
-				/* is it expired? */
-				(now - sbuf.st_atime) > maxlifetime) {
-			unlink(buf);
-		}
-	}
-
-	closedir(dir);
-}
-
 PS_GC_FUNC(files) 
 {
 	PS_FILES_DATA;
@@ -235,7 +246,7 @@ PS_GC_FUNC(files)
 		return SUCCESS;
 	}
 
-	ps_files_cleanup_dir(data->basedir, maxlifetime);
+	_ps_files_cleanup_dir(data->basedir, maxlifetime);
 	
 	return SUCCESS;
 }