Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * dhcpcd - DHCP client daemon |
| 3 | * Copyright (c) 2006-2015 Roy Marples <roy@marples.name> |
| 4 | * All rights reserved |
| 5 | |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef DHCPCD_H |
| 29 | #define DHCPCD_H |
| 30 | |
| 31 | #include <sys/socket.h> |
| 32 | #include <net/if.h> |
| 33 | |
| 34 | #include "config.h" |
| 35 | #include "defs.h" |
| 36 | #include "control.h" |
| 37 | #include "if-options.h" |
| 38 | |
| 39 | #define HWADDR_LEN 20 |
| 40 | #define IF_SSIDSIZE 33 |
| 41 | #define PROFILE_LEN 64 |
| 42 | #define SECRET_LEN 64 |
Samuel Tan | a359582 | 2015-08-13 16:41:21 -0700 | [diff] [blame] | 43 | #define LEASE_IDENTIFIER_LEN (PATH_MAX - sizeof(LEASEFILE)) |
Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 44 | |
| 45 | #define LINK_UP 1 |
| 46 | #define LINK_UNKNOWN 0 |
| 47 | #define LINK_DOWN -1 |
| 48 | |
| 49 | #define IF_DATA_IPV4 0 |
| 50 | #define IF_DATA_DHCP 1 |
| 51 | #define IF_DATA_IPV6 2 |
| 52 | #define IF_DATA_IPV6ND 3 |
| 53 | #define IF_DATA_DHCP6 4 |
| 54 | #define IF_DATA_MAX 5 |
| 55 | |
| 56 | /* If the interface does not support carrier status (ie PPP), |
| 57 | * dhcpcd can poll it for the relevant flags periodically */ |
| 58 | #define IF_POLL_UP 100 /* milliseconds */ |
| 59 | |
| 60 | struct interface { |
| 61 | struct dhcpcd_ctx *ctx; |
| 62 | TAILQ_ENTRY(interface) next; |
| 63 | char name[IF_NAMESIZE]; |
| 64 | #ifdef __linux__ |
| 65 | char alias[IF_NAMESIZE]; |
| 66 | #endif |
| 67 | unsigned int index; |
| 68 | unsigned int flags; |
| 69 | sa_family_t family; |
| 70 | unsigned char hwaddr[HWADDR_LEN]; |
| 71 | uint8_t hwlen; |
| 72 | unsigned int metric; |
| 73 | int carrier; |
| 74 | int wireless; |
| 75 | uint8_t ssid[IF_SSIDSIZE]; |
| 76 | unsigned int ssid_len; |
Samuel Tan | a359582 | 2015-08-13 16:41:21 -0700 | [diff] [blame] | 77 | char lease_identifier[LEASE_IDENTIFIER_LEN]; |
Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 78 | |
| 79 | char profile[PROFILE_LEN]; |
| 80 | struct if_options *options; |
| 81 | void *if_data[IF_DATA_MAX]; |
| 82 | }; |
| 83 | TAILQ_HEAD(if_head, interface); |
| 84 | |
| 85 | struct dhcpcd_ctx { |
| 86 | int pid_fd; |
| 87 | char pidfile[sizeof(PIDFILE) + IF_NAMESIZE + 1]; |
| 88 | const char *cffile; |
| 89 | unsigned long long options; |
| 90 | char *logfile; |
| 91 | int log_fd; |
| 92 | int argc; |
| 93 | char **argv; |
| 94 | int ifac; /* allowed interfaces */ |
| 95 | char **ifav; /* allowed interfaces */ |
| 96 | int ifdc; /* denied interfaces */ |
| 97 | char **ifdv; /* denied interfaces */ |
| 98 | int ifc; /* listed interfaces */ |
| 99 | char **ifv; /* listed interfaces */ |
| 100 | int ifcc; /* configured interfaces */ |
| 101 | char **ifcv; /* configured interfaces */ |
| 102 | unsigned char *duid; |
| 103 | size_t duid_len; |
| 104 | int link_fd; |
| 105 | struct if_head *ifaces; |
| 106 | |
| 107 | #ifdef USE_SIGNALS |
| 108 | sigset_t sigset; |
| 109 | #endif |
| 110 | struct eloop_ctx *eloop; |
| 111 | |
| 112 | int control_fd; |
| 113 | int control_unpriv_fd; |
| 114 | struct fd_list_head control_fds; |
| 115 | char control_sock[sizeof(CONTROLSOCKET) + IF_NAMESIZE]; |
| 116 | gid_t control_group; |
| 117 | |
| 118 | /* DHCP Enterprise options, RFC3925 */ |
| 119 | struct dhcp_opt *vivso; |
| 120 | size_t vivso_len; |
| 121 | |
| 122 | #ifdef INET |
| 123 | struct dhcp_opt *dhcp_opts; |
| 124 | size_t dhcp_opts_len; |
| 125 | struct rt_head *ipv4_routes; |
| 126 | struct rt_head *ipv4_kroutes; |
| 127 | |
| 128 | int udp_fd; |
| 129 | uint8_t *packet; |
| 130 | |
| 131 | /* Our aggregate option buffer. |
| 132 | * We ONLY use this when options are split, which for most purposes is |
| 133 | * practically never. See RFC3396 for details. */ |
| 134 | uint8_t *opt_buffer; |
| 135 | #endif |
| 136 | #ifdef INET6 |
| 137 | unsigned char secret[SECRET_LEN]; |
| 138 | size_t secret_len; |
| 139 | |
| 140 | struct dhcp_opt *dhcp6_opts; |
| 141 | size_t dhcp6_opts_len; |
| 142 | struct ipv6_ctx *ipv6; |
| 143 | #ifndef __linux__ |
| 144 | int ra_global; |
| 145 | #endif |
| 146 | #endif /* INET6 */ |
| 147 | |
| 148 | #ifdef PLUGIN_DEV |
| 149 | char *dev_load; |
| 150 | int dev_fd; |
| 151 | struct dev *dev; |
| 152 | void *dev_handle; |
| 153 | #endif |
| 154 | }; |
| 155 | |
| 156 | #ifdef USE_SIGNALS |
| 157 | struct dhcpcd_siginfo { |
| 158 | int signo; |
| 159 | }; |
| 160 | |
| 161 | extern const int dhcpcd_handlesigs[]; |
| 162 | void dhcpcd_handle_signal(void *); |
| 163 | #endif |
| 164 | |
| 165 | int dhcpcd_oneup(struct dhcpcd_ctx *); |
| 166 | int dhcpcd_ipwaited(struct dhcpcd_ctx *); |
| 167 | pid_t dhcpcd_daemonise(struct dhcpcd_ctx *); |
| 168 | |
| 169 | int dhcpcd_handleargs(struct dhcpcd_ctx *, struct fd_list *, int, char **); |
| 170 | void dhcpcd_handlecarrier(struct dhcpcd_ctx *, int, unsigned int, const char *); |
| 171 | int dhcpcd_handleinterface(void *, int, const char *); |
| 172 | void dhcpcd_handlehwaddr(struct dhcpcd_ctx *, const char *, |
| 173 | const unsigned char *, uint8_t); |
| 174 | void dhcpcd_dropinterface(struct interface *, const char *); |
| 175 | int dhcpcd_selectprofile(struct interface *, const char *); |
| 176 | |
| 177 | void dhcpcd_startinterface(void *); |
| 178 | void dhcpcd_initstate(struct interface *, unsigned long long); |
| 179 | |
Samuel Tan | e942e09 | 2015-08-13 17:14:37 -0700 | [diff] [blame] | 180 | void dhcpcd_start_interface(struct dhcpcd_ctx *, const char *); |
| 181 | void dhcpcd_stop_interface(struct dhcpcd_ctx *, const char *); |
| 182 | void dhcpcd_release_ipv4(struct dhcpcd_ctx *, const char *); |
| 183 | void dhcpcd_stop_interfaces(struct dhcpcd_ctx *); |
| 184 | |
Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 185 | #endif |