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Diffstat (limited to 'tui/nmt-ip-entry.c')
| -rw-r--r-- | tui/nmt-ip-entry.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/tui/nmt-ip-entry.c b/tui/nmt-ip-entry.c new file mode 100644 index 00000000..85a29fcc --- /dev/null +++ b/tui/nmt-ip-entry.c @@ -0,0 +1,265 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * Copyright 2013 Red Hat, Inc. + */ + +/** + * SECTION:nmt-ip-entry + * @short_description: #NmtNewtEntry for IP address entry + * + * #NmtIPEntry is an #NmtNewtEntry for entering IP addresses, or IP + * address/prefix combination. It will only allow typing characters + * that are valid in an IP address, and will set its + * #NmtNewtWidget:valid property depending on whether it currently + * contains a valid IP address. + */ + +#include "config.h" + +#include <arpa/inet.h> +#include <netinet/in.h> +#include <stdlib.h> + +#include <glib/gi18n-lib.h> + +#include "nmt-ip-entry.h" + +G_DEFINE_TYPE (NmtIPEntry, nmt_ip_entry, NMT_TYPE_NEWT_ENTRY) + +#define NMT_IP_ENTRY_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NMT_TYPE_IP_ENTRY, NmtIPEntryPrivate)) + +typedef struct { + int family; + gboolean prefix; + gboolean optional; + +} NmtIPEntryPrivate; + +enum { + PROP_0, + PROP_FAMILY, + PROP_PREFIX, + PROP_OPTIONAL, + + LAST_PROP +}; + +/** + * nmt_ip_entry_new: + * @width: the width of the entry + * @family: the IP address family. Eg, %AF_INET + * @prefix: whether to require a trailing "/prefix" + * @optional: whether the address is optional + * + * Creates a new #NmtIPEntry, to accept IP addresses in the indicated + * @family, or (if @prefix is %TRUE), to accept IP address/prefix combos. + * + * If @optional is %TRUE then the address is considered optional, and + * so will still be #NmtNewtWidget:valid even when it is empty. If + * @optional is %FALSE, the entry will be invalid when it is empty. + */ +NmtNewtWidget * +nmt_ip_entry_new (int width, + int family, + gboolean prefix, + gboolean optional) +{ + return g_object_new (NMT_TYPE_IP_ENTRY, + "width", width, + "family", family, + "prefix", prefix, + "optional", optional, + NULL); +} + +static gboolean +ip_entry_filter (NmtNewtEntry *entry, + const char *text, + int ch, + int position, + gpointer user_data) +{ + NmtIPEntryPrivate *priv = NMT_IP_ENTRY_GET_PRIVATE (entry); + const char *slash; + gboolean inaddr; + + if (g_ascii_isdigit (ch)) + return TRUE; + + slash = strchr (text, '/'); + if (ch == '/') + return priv->prefix && slash == NULL; + + inaddr = !slash || (position <= (slash - text)); + + if (priv->family == AF_INET) { + if (ch == '.') + return inaddr; + else + return FALSE; + } else if (priv->family == AF_INET6) { + if (g_ascii_isxdigit (ch) || ch == ':') + return inaddr; + else + return FALSE; + } else + g_return_val_if_reached (FALSE); +} + +static gboolean +ip_entry_validate (NmtNewtEntry *entry, + const char *text, + gpointer user_data) +{ + NmtIPEntryPrivate *priv = NMT_IP_ENTRY_GET_PRIVATE (entry); + guchar buf[16]; + guint32 prefix; + const char *slash; + char *addrstr, *end; + gboolean valid; + + if (!*text) + return priv->optional; + + slash = strchr (text, '/'); + + if (slash) { + if (!priv->prefix) + return FALSE; + addrstr = g_strndup (text, slash - text); + } else + addrstr = g_strdup (text); + valid = (inet_pton (priv->family, addrstr, buf) == 1); + g_free (addrstr); + + if (!valid) + return FALSE; + + if (slash) { + prefix = strtoul (slash + 1, &end, 10); + if ( *end + || prefix == 0 + || (priv->family == AF_INET && prefix > 32) + || (priv->family == AF_INET6 && prefix > 128)) + valid = FALSE; + } + + return valid; +} + +static void +nmt_ip_entry_init (NmtIPEntry *entry) +{ + nmt_newt_entry_set_filter (NMT_NEWT_ENTRY (entry), ip_entry_filter, NULL); + nmt_newt_entry_set_validator (NMT_NEWT_ENTRY (entry), ip_entry_validate, NULL); +} + +static void +nmt_ip_entry_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + NmtIPEntryPrivate *priv = NMT_IP_ENTRY_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_FAMILY: + priv->family = g_value_get_int (value); + break; + case PROP_PREFIX: + priv->prefix = g_value_get_boolean (value); + break; + case PROP_OPTIONAL: + priv->optional = g_value_get_boolean (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +nmt_ip_entry_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + NmtIPEntryPrivate *priv = NMT_IP_ENTRY_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_FAMILY: + g_value_set_int (value, priv->family); + break; + case PROP_PREFIX: + g_value_set_boolean (value, priv->prefix); + break; + case PROP_OPTIONAL: + g_value_set_boolean (value, priv->optional); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +nmt_ip_entry_class_init (NmtIPEntryClass *entry_class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (entry_class); + + g_type_class_add_private (entry_class, sizeof (NmtIPEntryPrivate)); + + /* virtual methods */ + object_class->set_property = nmt_ip_entry_set_property; + object_class->get_property = nmt_ip_entry_get_property; + + /** + * NmtIPEntry:family: + * + * The address family. Eg, %AF_INET + */ + g_object_class_install_property (object_class, PROP_FAMILY, + g_param_spec_int ("family", "", "", + 0, G_MAXINT, 0, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_STATIC_STRINGS)); + /** + * NmtIPEntry:prefix: + * + * If %TRUE, the entry accepts address/prefix combinations. If + * %FALSE it accepts just addresses. + */ + g_object_class_install_property (object_class, PROP_PREFIX, + g_param_spec_boolean ("prefix", "", "", + FALSE, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_STATIC_STRINGS)); + /** + * NmtIPEntry:optional: + * + * If %TRUE, the entry will be #NmtNewtWidget:valid when it is + * empty. If %FALSE, it will only be valid when it contains a + * valid address or address/prefix. + */ + g_object_class_install_property (object_class, PROP_OPTIONAL, + g_param_spec_boolean ("optional", "", "", + FALSE, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_STATIC_STRINGS)); +} |