diff options
| -rw-r--r-- | src/libsystemd-dhcp/dhcp-client.c | 125 | ||||
| -rw-r--r-- | src/libsystemd-dhcp/dhcp-protocol.h (renamed from src/dhcp/protocol.h) | 0 | ||||
| -rw-r--r-- | src/systemd/sd-dhcp-client.h | 36 |
3 files changed, 161 insertions, 0 deletions
diff --git a/src/libsystemd-dhcp/dhcp-client.c b/src/libsystemd-dhcp/dhcp-client.c new file mode 100644 index 0000000000..85c8040da4 --- /dev/null +++ b/src/libsystemd-dhcp/dhcp-client.c @@ -0,0 +1,125 @@ +/*** + This file is part of systemd. + + Copyright (C) 2013 Intel Corporation. All rights reserved. + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <stdio.h> + +#include "util.h" +#include "list.h" + +#include "dhcp-protocol.h" +#include "sd-dhcp-client.h" + +struct sd_dhcp_client { + DHCPState state; + int index; + uint8_t *req_opts; + size_t req_opts_size; + uint32_t last_addr; +}; + +static const uint8_t default_req_opts[] = { + DHCP_OPTION_SUBNET_MASK, + DHCP_OPTION_ROUTER, + DHCP_OPTION_HOST_NAME, + DHCP_OPTION_DOMAIN_NAME, + DHCP_OPTION_DOMAIN_NAME_SERVER, + DHCP_OPTION_NTP_SERVER, +}; + +int sd_dhcp_client_set_request_option(sd_dhcp_client *client, uint8_t option) +{ + size_t i; + + assert_return(client, -EINVAL); + assert_return (client->state == DHCP_STATE_INIT, -EBUSY); + + switch(option) { + case DHCP_OPTION_PAD: + case DHCP_OPTION_OVERLOAD: + case DHCP_OPTION_MESSAGE_TYPE: + case DHCP_OPTION_PARAMETER_REQUEST_LIST: + case DHCP_OPTION_END: + return -EINVAL; + + default: + break; + } + + for (i = 0; i < client->req_opts_size; i++) + if (client->req_opts[i] == option) + return -EEXIST; + + if (!GREEDY_REALLOC(client->req_opts, client->req_opts_size, + client->req_opts_size + 1)) + return -ENOMEM; + + client->req_opts[client->req_opts_size - 1] = option; + + return 0; +} + +int sd_dhcp_client_set_request_address(sd_dhcp_client *client, + const struct in_addr *last_addr) +{ + assert_return(client, -EINVAL); + assert_return(client->state == DHCP_STATE_INIT, -EBUSY); + + if (last_addr) + client->last_addr = last_addr->s_addr; + else + client->last_addr = INADDR_ANY; + + return 0; +} + +int sd_dhcp_client_set_index(sd_dhcp_client *client, int interface_index) +{ + assert_return(client, -EINVAL); + assert_return(client->state == DHCP_STATE_INIT, -EBUSY); + assert_return(interface_index >= -1, -EINVAL); + + client->index = interface_index; + + return 0; +} + +sd_dhcp_client *sd_dhcp_client_new(void) +{ + sd_dhcp_client *client; + + client = new0(sd_dhcp_client, 1); + if (!client) + return NULL; + + client->state = DHCP_STATE_INIT; + client->index = -1; + + client->req_opts_size = ELEMENTSOF(default_req_opts); + + client->req_opts = memdup(default_req_opts, client->req_opts_size); + if (!client->req_opts) { + free(client); + return NULL; + } + + return client; +} diff --git a/src/dhcp/protocol.h b/src/libsystemd-dhcp/dhcp-protocol.h index d37546721a..d37546721a 100644 --- a/src/dhcp/protocol.h +++ b/src/libsystemd-dhcp/dhcp-protocol.h diff --git a/src/systemd/sd-dhcp-client.h b/src/systemd/sd-dhcp-client.h new file mode 100644 index 0000000000..9b19a1dc97 --- /dev/null +++ b/src/systemd/sd-dhcp-client.h @@ -0,0 +1,36 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#ifndef foosddhcpclienthfoo +#define foosddhcpclienthfoo + +/*** + This file is part of systemd. + + Copyright (C) 2013 Intel Corporation. All rights reserved. + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <netinet/in.h> + +typedef struct sd_dhcp_client sd_dhcp_client; + +int sd_dhcp_client_set_request_option(sd_dhcp_client *client, uint8_t option); +int sd_dhcp_client_set_request_address(sd_dhcp_client *client, + const struct in_addr *last_address); +int sd_dhcp_client_set_index(sd_dhcp_client *client, int interface_index); + +sd_dhcp_client *sd_dhcp_client_new(void); + +#endif |