[Patch] Add Export functionality to NetworkManager-openvpn

[Huzaifa Sidhpurwala <sidhpurwala huzaifa gmail com>]

Hi All,
This patch is a bit raw, but is well tested, It does not work with static keys, but i am working on it.
Can you someone please check this out, so that i know i am working in the right direction?


diff --git a/properties/import-export.c b/properties/import-export.c
index 5e17dea..b0dd5ed 100644
--- a/properties/import-export.c
+++ b/properties/import-export.c
@@ -415,7 +415,144 @@ do_import (const char *path, char **lines, GError **error)
 gboolean
 do_export (const char *path, NMConnection *connection, GError **error)
 {
-	return FALSE;
+        NMSettingConnection *s_con;
+        NMSettingIP4Config *s_ip4;
+        NMSettingVPN *s_vpn;
+
+        FILE *f;
+
+        const char *value;
+        const char *gateway = NULL;
+        const char *cipher = NULL;
+        const char *cacert = NULL;
+        const char *connection_type = NULL;
+        const char *user_cert = NULL;
+        const char *private_key = NULL;
+
+        guint16 port = 0;
+        gboolean success = FALSE;
+        gboolean device_tun = TRUE;
+        gboolean proto_udp = TRUE;
+        gboolean use_lzo = FALSE;
+        gboolean reneg_exists = FALSE;
+        guint32 reneg = 0;
+
+
+        s_con = NM_SETTING_CONNECTION (nm_connection_get_setting (connection, NM_TYPE_SETTING_CONNECTION));
+        s_ip4 = (NMSettingIP4Config *) nm_connection_get_setting (connection, NM_TYPE_SETTING_IP4_CONFIG);
+
+        s_vpn = (NMSettingVPN *) nm_connection_get_setting (connection, NM_TYPE_SETTING_VPN);
+
+        f = fopen (path, "w");
+        if (!f) {
+                g_set_error (error, 0, 0, "could not open file for writing");
+                return FALSE;
+        }
+
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_REMOTE);
+        if (value && strlen (value))
+                gateway = value;
+        else {
+                g_set_error (error, 0, 0, "connection was incomplete (missing gateway)");
+                goto done;
+        }
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_CONNECTION_TYPE);
+        if (value && strlen (value))
+                connection_type = value;
+
+        if ((!strcmp(connection_type, NM_OPENVPN_CONTYPE_TLS)) ||
+            (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD)) ||
+            (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD_TLS))) {
+                        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_CA);
+                        if (value && strlen (value))
+                        cacert = value;
+        }
+
+        if ((!strcmp(connection_type, NM_OPENVPN_CONTYPE_TLS)) ||
+        (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD_TLS)))
+         {
+                        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_CERT);
+                        if (value && strlen (value))
+                                user_cert = value;
+
+                        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_KEY);
+                        if (value && strlen (value))
+                              private_key = value;
+        }
+/* Advanced values start*/
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_PORT);
+        if (value && strlen (value))
+                port = strtol (value, NULL, 10);
+
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_RENEG_SECONDS);
+        if (value && strlen (value)) {
+                        reneg_exists = TRUE;
+                        reneg = strtol (value, NULL, 10);
+                        }
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_PROTO_TCP);
+        if (value && !strcmp (value, "yes"))
+                proto_udp = FALSE;
+
+
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_TAP_DEV);
+        if (value && !strcmp (value, "yes"))
+                device_tun = FALSE;
+
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_COMP_LZO);
+        if (value && !strcmp (value, "yes"))
+                use_lzo = TRUE;
+
+        value = nm_setting_vpn_get_data_item (s_vpn, NM_OPENVPN_KEY_CIPHER);
+        if (value && strlen (value))
+                cipher = value;
+
+/* Advanced values end*/
+
+
+        fprintf (f,"client\n" "remote %s ",gateway);
+
+
+        if (port)
+                fprintf (f,"%d\n", port);
+        else
+                fprintf (f,"\n");
+
+        if ((!strcmp(connection_type, NM_OPENVPN_CONTYPE_TLS)) ||
+            (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD)) ||
+            (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD_TLS))) {
+
+                if (cacert)
+                        fprintf (f, "ca %s\n", cacert);
+        }
+
+       if ((!strcmp(connection_type, NM_OPENVPN_CONTYPE_TLS)) ||
+          (!strcmp(connection_type, NM_OPENVPN_CONTYPE_PASSWORD_TLS))) {
+                if (user_cert)
+                        fprintf (f, "cert %s\n", user_cert);
+                if (private_key)
+                        fprintf(f, "key %s\n", private_key);
+        }
+
+        if (reneg_exists)
+                fprintf (f, "reneg-sec %d\n", reneg);
+
+        if (cipher)
+                fprintf (f, "cipher %s\n", cipher);
+
+        if (use_lzo)
+                fprintf (f, "comp-lzo yes\n");
+
+
+        fprintf (f, "dev %s\n" "proto %s\n", (device_tun ? "tun" : "tap"), (proto_udp ? "udp" : "tcp") );
+
+/* Add extra args which are hard-coded*/
+        fprintf (f, "nobind\n" "auth-nocache\n" "script-security 2\n"
+                    "persist-key\n" "persist-tun\n"
+                    "user openvpn\n" "group openvpn\n");
+        success = TRUE;
+
+done:
+        fclose (f);
+        return success;
 }
 
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