diff options
Diffstat (limited to 'src/dhcp-manager/nm-dhcp-dhclient-utils.c')
| -rw-r--r-- | src/dhcp-manager/nm-dhcp-dhclient-utils.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/dhcp-manager/nm-dhcp-dhclient-utils.c b/src/dhcp-manager/nm-dhcp-dhclient-utils.c new file mode 100644 index 00000000..cc5255ab --- /dev/null +++ b/src/dhcp-manager/nm-dhcp-dhclient-utils.c @@ -0,0 +1,217 @@ +/* -*- 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, 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Copyright (C) 2010 Red Hat, Inc. + */ + +#include <config.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <string.h> +#include <ctype.h> + +#include "nm-dhcp-dhclient-utils.h" + +#define CLIENTID_TAG "send dhcp-client-identifier" +#define CLIENTID_FORMAT CLIENTID_TAG " \"%s\"; # added by NetworkManager" +#define CLIENTID_FORMAT_OCTETS CLIENTID_TAG " %s; # added by NetworkManager" + +#define HOSTNAME_TAG "send host-name" +#define HOSTNAME_FORMAT HOSTNAME_TAG " \"%s\"; # added by NetworkManager" + +#define ALSOREQ_TAG "also request " + +static void +add_also_request (GPtrArray *array, const char *item) +{ + int i; + + for (i = 0; i < array->len; i++) { + if (!strcmp (g_ptr_array_index (array, i), item)) + return; + } + g_ptr_array_add (array, g_strdup (item)); +} + +char * +nm_dhcp_dhclient_create_config (const char *interface, + NMSettingIP4Config *s_ip4, + guint8 *anycast_addr, + const char *hostname, + const char *orig_path, + const char *orig_contents) +{ + GString *new_contents; + GPtrArray *alsoreq; + int i; + + new_contents = g_string_new (_("# Created by NetworkManager\n")); + alsoreq = g_ptr_array_sized_new (5); + + if (orig_contents) { + char **lines, **line; + gboolean in_alsoreq = FALSE; + + g_string_append_printf (new_contents, _("# Merged from %s\n\n"), orig_path); + + lines = g_strsplit_set (orig_contents, "\n\r", 0); + for (line = lines; lines && *line; line++) { + char *p = *line; + + if (!strlen (g_strstrip (p))) + continue; + + /* Override config file "dhcp-client-id" and use one from the + * connection. + */ + if ( s_ip4 + && nm_setting_ip4_config_get_dhcp_client_id (s_ip4) + && !strncmp (p, CLIENTID_TAG, strlen (CLIENTID_TAG))) + continue; + + /* Override config file hostname and use one from the connection */ + if (hostname && !strncmp (p, HOSTNAME_TAG, strlen (HOSTNAME_TAG))) + continue; + + /* Check for "also require" */ + if (!strncmp (p, ALSOREQ_TAG, strlen (ALSOREQ_TAG))) { + in_alsoreq = TRUE; + p += strlen (ALSOREQ_TAG); + } + + if (in_alsoreq) { + char **areq, **aiter; + + /* Grab each 'also require' option and save for later */ + areq = g_strsplit_set (p, "\t ,", -1); + for (aiter = areq; aiter && *aiter; aiter++) { + if (!strlen (g_strstrip (*aiter))) + continue; + + if (*aiter[0] == ';') { + /* all done */ + in_alsoreq = FALSE; + break; + } + + if (!isalnum ((*aiter)[0])) + continue; + + if ((*aiter)[strlen (*aiter) - 1] == ';') { + /* Remove the EOL marker */ + (*aiter)[strlen (*aiter) - 1] = '\0'; + in_alsoreq = FALSE; + } + + add_also_request (alsoreq, *aiter); + } + + if (areq) + g_strfreev (areq); + + continue; + } + + /* Existing configuration line is OK, add it to new configuration */ + g_string_append (new_contents, *line); + g_string_append_c (new_contents, '\n'); + } + + if (lines) + g_strfreev (lines); + } else + g_string_append_c (new_contents, '\n'); + + /* Add NM options from connection */ + if (s_ip4) { + const char *tmp; + gboolean added = FALSE; + + tmp = nm_setting_ip4_config_get_dhcp_client_id (s_ip4); + if (tmp) { + gboolean is_octets = TRUE; + const char *p = tmp; + + while (*p) { + if (!isxdigit (*p) && (*p != ':')) { + is_octets = FALSE; + break; + } + p++; + } + + /* If the client ID is just hex digits and : then don't use quotes, + * because dhclient expects either a quoted ASCII string, or a byte + * array formated as hex octets separated by : + */ + if (is_octets) + g_string_append_printf (new_contents, CLIENTID_FORMAT_OCTETS "\n", tmp); + else + g_string_append_printf (new_contents, CLIENTID_FORMAT "\n", tmp); + added = TRUE; + } + + if (hostname) { + g_string_append_printf (new_contents, HOSTNAME_FORMAT "\n", hostname); + added = TRUE; + } + + if (added) + g_string_append_c (new_contents, '\n'); + } + + /* Define options for classless static routes */ + g_string_append (new_contents, + "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"); + g_string_append (new_contents, + "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"); + /* Web Proxy Auto-Discovery option (bgo #368423) */ + g_string_append (new_contents, "option wpad code 252 = string;\n"); + + g_string_append_c (new_contents, '\n'); + + /* Everything we want to request from the DHCP server */ + add_also_request (alsoreq, "rfc3442-classless-static-routes"); + add_also_request (alsoreq, "ms-classless-static-routes"); + add_also_request (alsoreq, "wpad"); + add_also_request (alsoreq, "ntp-servers"); + + /* And add it to the dhclient configuration */ + for (i = 0; i < alsoreq->len; i++) { + char *t = g_ptr_array_index (alsoreq, i); + + g_string_append_printf (new_contents, "also request %s;\n", t); + g_free (t); + } + g_ptr_array_free (alsoreq, TRUE); + + g_string_append_c (new_contents, '\n'); + + if (anycast_addr) { + g_string_append_printf (new_contents, "interface \"%s\" {\n" + " initial-interval 1; \n" + " anycast-mac ethernet %02x:%02x:%02x:%02x:%02x:%02x;\n" + "}\n", + interface, + anycast_addr[0], anycast_addr[1], + anycast_addr[2], anycast_addr[3], + anycast_addr[4], anycast_addr[5]); + } + + return g_string_free (new_contents, FALSE); +} + |