[network-manager-openvpn/dcbw/need-secrets: 3/4] auth-dialog: handle and parse hints

[Dan Williams <dcbw src gnome org>]

commit 6d8d6f95018bea96f9b113d71293e75ea3c601b1
Author: Dan Williams <dcbw redhat com>
Date:   Tue Jul 16 14:50:51 2013 -0500

    auth-dialog: handle and parse hints

 auth-dialog/main.c         |   38 +++++++++++++++++++++++++++++++++++---
 nm-openvpn-service.name.in |    1 +
 2 files changed, 36 insertions(+), 3 deletions(-)
---
diff --git a/auth-dialog/main.c b/auth-dialog/main.c
index 6ff90e1..b457a79 100644
--- a/auth-dialog/main.c
+++ b/auth-dialog/main.c
@@ -250,16 +250,34 @@ get_secrets (const char *vpn_name,
        return success;
 }
 
-static void
+#define VPN_MSG_TAG "x-vpn-message:"
+
+static char *
 get_passwords_required (GHashTable *data,
+                        char **hints,
                         gboolean *out_need_password,
                         gboolean *out_need_certpass)
 {
        const char *ctype, *val;
        NMSettingSecretFlags flags = NM_SETTING_SECRET_FLAG_NONE;
+       char *prompt = NULL;
+       char **iter;
+
+       /* If hints are given, then always ask for what the hints require */
+       if (hints && g_strv_length (hints)) {
+               for (iter = hints; iter && *iter; iter++) {
+                       if (!prompt && g_str_has_prefix (*iter, VPN_MSG_TAG))
+                               prompt = g_strdup (*iter + strlen (VPN_MSG_TAG));
+                       else if (strcmp (*iter, NM_OPENVPN_KEY_PASSWORD) == 0)
+                               *out_need_password = TRUE;
+                       else if (strcmp (*iter, NM_OPENVPN_KEY_CERTPASS) == 0)
+                               *out_need_certpass = TRUE;
+               }
+               return prompt;
+       }
 
        ctype = g_hash_table_lookup (data, NM_OPENVPN_KEY_CONNECTION_TYPE);
-       g_return_if_fail (ctype != NULL);
+       g_return_val_if_fail (ctype != NULL, NULL);
 
        if (!strcmp (ctype, NM_OPENVPN_CONTYPE_TLS) || !strcmp (ctype, NM_OPENVPN_CONTYPE_PASSWORD_TLS)) {
                /* Normal user password */
@@ -277,6 +295,8 @@ get_passwords_required (GHashTable *data,
                if (!(flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED))
                        *out_need_password = TRUE;
        }
+
+       return NULL;
 }
 
 static void
@@ -314,6 +334,8 @@ main (int argc, char *argv[])
        GHashTable *data = NULL, *secrets = NULL;
        gboolean need_password = FALSE, need_certpass = FALSE;
        char *new_password = NULL, *new_certpass = NULL;
+       char **hints = NULL;
+       char *prompt = NULL;
        gboolean external_ui_mode = FALSE;
        NMSettingSecretFlags pw_flags = NM_SETTING_SECRET_FLAG_NONE;
        NMSettingSecretFlags cp_flags = NM_SETTING_SECRET_FLAG_NONE;
@@ -325,6 +347,7 @@ main (int argc, char *argv[])
                        { "service", 's', 0, G_OPTION_ARG_STRING, &vpn_service, "VPN service type", NULL},
                        { "allow-interaction", 'i', 0, G_OPTION_ARG_NONE, &allow_interaction, "Allow user 
interaction", NULL},
                        { "external-ui-mode", 0, 0, G_OPTION_ARG_NONE, &external_ui_mode, "External UI mode", 
NULL},
+                       { "hint", 't', 0, G_OPTION_ARG_STRING_ARRAY, &hints, "Hints from the VPN plugin", 
NULL},
                        { NULL }
                };
 
@@ -355,7 +378,12 @@ main (int argc, char *argv[])
                return 1;
        }
 
-       get_passwords_required (data, &need_password, &need_certpass);
+       /* Determine which passwords are actually required, either from hints or
+        * from looking at the VPN configuration.
+        */
+       prompt = get_passwords_required (data, hints, &need_password, &need_certpass);
+
+       /* Exit early if we don't need any passwords */
        if (!need_password && !need_certpass) {
                if (external_ui_mode) {
                        GKeyFile *keyfile;
@@ -372,6 +400,7 @@ main (int argc, char *argv[])
                        printf ("%s\n%s\n\n\n", NM_OPENVPN_KEY_NOSECRET, "true");
                }
 
+               g_free (prompt);
                return 0;
        }
 
@@ -415,5 +444,8 @@ main (int argc, char *argv[])
                g_hash_table_unref (data);
        if (secrets)
                g_hash_table_unref (secrets);
+       if (hints)
+               g_strfreev (hints);
+       g_free (prompt);
        return 0;
 }
diff --git a/nm-openvpn-service.name.in b/nm-openvpn-service.name.in
index 2ee066a..f4cce87 100644
--- a/nm-openvpn-service.name.in
+++ b/nm-openvpn-service.name.in
@@ -7,4 +7,5 @@ program= LIBEXECDIR@/nm-openvpn-service
 auth-dialog= LIBEXECDIR@/nm-openvpn-auth-dialog
 properties= PLUGINDIR@/libnm-openvpn-properties
 supports-external-ui-mode=true
+supports-hints=true