#endif
-/* "struct client_config_t client_config" is in bb_common_bufsiz1 */
+/* "struct client_data_t client_data" is in bb_common_bufsiz1 */
#if ENABLE_LONG_OPTS
}
#if ENABLE_FEATURE_UDHCPC_SANITIZEOPT
-/* Check if a given label represents a valid DNS label
- * Return pointer to the first character after the label
- * (NUL or dot) upon success, NULL otherwise.
- * See RFC1035, 2.3.1
- */
+/* Check if a given name represents a valid DNS name */
+/* See RFC1035, 2.3.1 */
/* We don't need to be particularly anal. For example, allowing _, hyphen
* at the end, or leading and trailing dots would be ok, since it
- * can't be used for attacks. (Leading hyphen can be, if someone uses
- * cmd "$hostname"
+ * can't be used for attacks. (Leading hyphen can be, if someone uses cmd "$hostname"
* in the script: then hostname may be treated as an option)
*/
-static const char *valid_domain_label(const char *label)
-{
- unsigned char ch;
- //unsigned pos = 0;
-
- if (label[0] == '-')
- return NULL;
- for (;;) {
- ch = *label;
- if ((ch|0x20) < 'a' || (ch|0x20) > 'z') {
- if (ch < '0' || ch > '9') {
- if (ch == '\0' || ch == '.')
- return label;
- /* DNS allows only '-', but we are more permissive */
- if (ch != '-' && ch != '_')
- return NULL;
- }
- }
- label++;
- //pos++;
- //Do we want this?
- //if (pos > 63) /* NS_MAXLABEL; labels must be 63 chars or less */
- // return NULL;
- }
-}
-
-/* Check if a given name represents a valid DNS name */
-/* See RFC1035, 2.3.1 */
static int good_hostname(const char *name)
{
- //const char *start = name;
-
- for (;;) {
- name = valid_domain_label(name);
- if (!name)
- return 0;
- if (!name[0])
- return 1;
- //Do we want this?
- //return ((name - start) < 1025); /* NS_MAXDNAME */
- name++;
- if (*name == '\0')
- return 1; // We allow trailing dot too
+ if (*name == '-') /* Can't start with '-' */
+ return 0;
+
+ while (*name) {
+ unsigned char ch = *name++;
+ if (!isalnum(ch))
+ /* DNS allows only '-', but we are more permissive */
+ if (ch != '-' && ch != '_' && ch != '.')
+ return 0;
+ // TODO: do we want to validate lengths against NS_MAXLABEL and NS_MAXDNAME?
}
+ return 1;
}
#else
# define good_hostname(name) 1
case OPTION_IP:
case OPTION_IP_PAIR:
dest += sprint_nip(dest, "", option);
- if (type == OPTION_IP)
- break;
- dest += sprint_nip(dest, "/", option + 4);
+ if (type == OPTION_IP_PAIR)
+ dest += sprint_nip(dest, "/", option + 4);
break;
// case OPTION_BOOLEAN:
// dest += sprintf(dest, *option ? "yes" : "no");
* IPv4MaskLen <= 32,
* 6rdPrefixLen <= 128,
* 6rdPrefixLen + (32 - IPv4MaskLen) <= 128
- * (2nd condition need no check - it follows from 1st and 3rd).
+ * (2nd condition needs no check - it follows from 1st and 3rd).
* Else, return envvar with empty value ("optname=")
*/
if (len >= (1 + 1 + 16 + 4)
/* 6rdPrefix */
dest += sprint_nip6(dest, /* "", */ option);
option += 16;
- len -= 1 + 1 + 16 + 4;
- /* "+ 4" above corresponds to the length of IPv4 addr
- * we consume in the loop below */
- while (1) {
- /* 6rdBRIPv4Address(es) */
- dest += sprint_nip(dest, " ", option);
- option += 4;
- len -= 4; /* do we have yet another 4+ bytes? */
- if (len < 0)
- break; /* no */
- }
+ len -= 1 + 1 + 16;
+ *dest++ = ' ';
+ /* 6rdBRIPv4Address(es), use common IPv4 logic to process them */
+ type = OPTION_IP;
+ optlen = 4;
+ continue;
}
return ret;
*/
option++;
len--;
+ if (option[-1] == 1) {
+ /* use common IPv4 logic to process IP addrs */
+ type = OPTION_IP;
+ optlen = 4;
+ continue;
+ }
if (option[-1] == 0) {
dest = dname_dec(option, len, ret);
if (dest) {
free(ret);
return dest;
}
- } else
- if (option[-1] == 1) {
- const char *pfx = "";
- while (1) {
- len -= 4;
- if (len < 0)
- break;
- dest += sprint_nip(dest, pfx, option);
- pfx = " ";
- option += 4;
- }
}
return ret;
#endif
memset(found_opts, 0, sizeof(found_opts));
- /* We need 6 elements for:
+ /* We need 7 elements for:
* "interface=IFACE"
* "ip=N.N.N.N" from packet->yiaddr
+ * "giaddr=IP" from packet->gateway_nip (unless 0)
* "siaddr=IP" from packet->siaddr_nip (unless 0)
* "boot_file=FILE" from packet->file (unless overloaded)
* "sname=SERVER_HOSTNAME" from packet->sname (unless overloaded)
* terminating NULL
*/
- envc = 6;
+ envc = 7;
/* +1 element for each option, +2 for subnet option: */
if (packet) {
/* note: do not search for "pad" (0) and "end" (255) options */
}
curr = envp = xzalloc(sizeof(envp[0]) * envc);
- *curr = xasprintf("interface=%s", client_config.interface);
+ *curr = xasprintf("interface=%s", client_data.interface);
putenv(*curr++);
if (!packet)
* uint16_t flags; // only one flag so far: bcast. Never set by server
* uint32_t ciaddr; // client IP (usually == yiaddr. can it be different
* // if during renew server wants to give us different IP?)
- * uint32_t gateway_nip; // relay agent IP address
* uint8_t chaddr[16]; // link-layer client hardware address (MAC)
- * TODO: export gateway_nip as $giaddr?
*/
/* Most important one: yiaddr as $ip */
*curr = xmalloc(sizeof("ip=255.255.255.255"));
sprint_nip(*curr, "siaddr=", (uint8_t *) &packet->siaddr_nip);
putenv(*curr++);
}
+ if (packet->gateway_nip) {
+ /* IP address of DHCP relay agent */
+ *curr = xmalloc(sizeof("giaddr=255.255.255.255"));
+ sprint_nip(*curr, "giaddr=", (uint8_t *) &packet->gateway_nip);
+ putenv(*curr++);
+ }
if (!(overload & FILE_FIELD) && packet->file[0]) {
/* watch out for invalid packets */
*curr = xasprintf("boot_file=%."DHCP_PKT_FILE_LEN_STR"s", packet->file);
envp = fill_envp(packet);
/* call script */
- log1("executing %s %s", client_config.script, name);
- argv[0] = (char*) client_config.script;
+ log1("executing %s %s", client_data.script, name);
+ argv[0] = (char*) client_data.script;
argv[1] = (char*) name;
argv[2] = NULL;
spawn_and_wait(argv);
/* Initialize the packet with the proper defaults */
static void init_packet(struct dhcp_packet *packet, char type)
{
- uint16_t secs;
+ unsigned secs;
/* Fill in: op, htype, hlen, cookie fields; message type option: */
udhcp_init_header(packet, type);
packet->xid = random_xid();
- client_config.last_secs = monotonic_sec();
- if (client_config.first_secs == 0)
- client_config.first_secs = client_config.last_secs;
- secs = client_config.last_secs - client_config.first_secs;
- packet->secs = htons(secs);
+ client_data.last_secs = monotonic_sec();
+ if (client_data.first_secs == 0)
+ client_data.first_secs = client_data.last_secs;
+ secs = client_data.last_secs - client_data.first_secs;
+ packet->secs = (secs < 0xffff) ? htons(secs) : 0xffff;
- memcpy(packet->chaddr, client_config.client_mac, 6);
- if (client_config.clientid)
- udhcp_add_binary_option(packet, client_config.clientid);
+ memcpy(packet->chaddr, client_data.client_mac, 6);
+ if (client_data.clientid)
+ udhcp_add_binary_option(packet, client_data.clientid);
}
static void add_client_options(struct dhcp_packet *packet)
end = udhcp_end_option(packet->options);
len = 0;
for (i = 1; i < DHCP_END; i++) {
- if (client_config.opt_mask[i >> 3] & (1 << (i & 7))) {
+ if (client_data.opt_mask[i >> 3] & (1 << (i & 7))) {
packet->options[end + OPT_DATA + len] = i;
len++;
}
packet->options[end + OPT_DATA + len] = DHCP_END;
}
- if (client_config.vendorclass)
- udhcp_add_binary_option(packet, client_config.vendorclass);
- if (client_config.hostname)
- udhcp_add_binary_option(packet, client_config.hostname);
- if (client_config.fqdn)
- udhcp_add_binary_option(packet, client_config.fqdn);
+ if (client_data.vendorclass)
+ udhcp_add_binary_option(packet, client_data.vendorclass);
+ if (client_data.hostname)
+ udhcp_add_binary_option(packet, client_data.hostname);
+ if (client_data.fqdn)
+ udhcp_add_binary_option(packet, client_data.fqdn);
/* Request broadcast replies if we have no IP addr */
if ((option_mask32 & OPT_B) && packet->ciaddr == 0)
/* Add -x options if any */
{
- struct option_set *curr = client_config.options;
+ struct option_set *curr = client_data.options;
while (curr) {
udhcp_add_binary_option(packet, curr->data);
curr = curr->next;
}
-// if (client_config.sname)
-// strncpy((char*)packet->sname, client_config.sname, sizeof(packet->sname) - 1);
-// if (client_config.boot_file)
-// strncpy((char*)packet->file, client_config.boot_file, sizeof(packet->file) - 1);
+// if (client_data.sname)
+// strncpy((char*)packet->sname, client_data.sname, sizeof(packet->sname) - 1);
+// if (client_data.boot_file)
+// strncpy((char*)packet->file, client_data.boot_file, sizeof(packet->file) - 1);
}
// This will be needed if we remove -V VENDOR_STR in favor of
* client reverts to using the IP broadcast address.
*/
-static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet, uint32_t src_nip)
+static int raw_bcast_from_client_data_ifindex(struct dhcp_packet *packet, uint32_t src_nip)
{
return udhcp_send_raw_packet(packet,
/*src*/ src_nip, CLIENT_PORT,
/*dst*/ INADDR_BROADCAST, SERVER_PORT, MAC_BCAST_ADDR,
- client_config.ifindex);
+ client_data.ifindex);
}
static int bcast_or_ucast(struct dhcp_packet *packet, uint32_t ciaddr, uint32_t server)
return udhcp_send_kernel_packet(packet,
ciaddr, CLIENT_PORT,
server, SERVER_PORT);
- return raw_bcast_from_client_config_ifindex(packet, ciaddr);
+ return raw_bcast_from_client_data_ifindex(packet, ciaddr);
}
/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
*/
add_client_options(&packet);
- bb_error_msg("sending %s", "discover");
- return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
+ bb_info_msg("sending %s", "discover");
+ return raw_bcast_from_client_data_ifindex(&packet, INADDR_ANY);
}
/* Broadcast a DHCP request message */
add_client_options(&packet);
temp_addr.s_addr = requested;
- bb_error_msg("sending select for %s", inet_ntoa(temp_addr));
- return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
+ bb_info_msg("sending select for %s", inet_ntoa(temp_addr));
+ return raw_bcast_from_client_data_ifindex(&packet, INADDR_ANY);
}
/* Unicast or broadcast a DHCP renew message */
add_client_options(&packet);
temp_addr.s_addr = server;
- bb_error_msg("sending renew to %s", inet_ntoa(temp_addr));
+ bb_info_msg("sending renew to %s", inet_ntoa(temp_addr));
return bcast_or_ucast(&packet, ciaddr, server);
}
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
- bb_error_msg("sending %s", "decline");
- return raw_bcast_from_client_config_ifindex(&packet, INADDR_ANY);
+ bb_info_msg("sending %s", "decline");
+ return raw_bcast_from_client_data_ifindex(&packet, INADDR_ANY);
}
#endif
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
- bb_error_msg("sending %s", "release");
+ bb_info_msg("sending %s", "release");
/* Note: normally we unicast here since "server" is not zero.
* However, there _are_ people who run "address-less" DHCP servers,
* and reportedly ISC dhcp client and Windows allow that.
if (bytes < 0) {
if (errno == EINTR)
continue;
- log1("packet read error, ignoring");
+ log1s("packet read error, ignoring");
/* NB: possible down interface, etc. Caller should pause. */
return bytes; /* returns -1 */
}
}
if (bytes < (int) (sizeof(packet.ip) + sizeof(packet.udp))) {
- log1("packet is too short, ignoring");
+ log1s("packet is too short, ignoring");
return -2;
}
if (bytes < ntohs(packet.ip.tot_len)) {
/* packet is bigger than sizeof(packet), we did partial read */
- log1("oversized packet, ignoring");
+ log1s("oversized packet, ignoring");
return -2;
}
/* || bytes > (int) sizeof(packet) - can't happen */
|| ntohs(packet.udp.len) != (uint16_t)(bytes - sizeof(packet.ip))
) {
- log1("unrelated/bogus packet, ignoring");
+ log1s("unrelated/bogus packet, ignoring");
return -2;
}
check = packet.ip.check;
packet.ip.check = 0;
if (check != inet_cksum((uint16_t *)&packet.ip, sizeof(packet.ip))) {
- log1("bad IP header checksum, ignoring");
+ log1s("bad IP header checksum, ignoring");
return -2;
}
check = packet.udp.check;
packet.udp.check = 0;
if (check && check != inet_cksum((uint16_t *)&packet, bytes)) {
- log1("packet with bad UDP checksum received, ignoring");
+ log1s("packet with bad UDP checksum received, ignoring");
return -2;
}
skip_udp_sum_check:
if (packet.data.cookie != htonl(DHCP_MAGIC)) {
- bb_error_msg("packet with bad magic, ignoring");
+ bb_simple_info_msg("packet with bad magic, ignoring");
return -2;
}
/*** Main ***/
-static int sockfd = -1;
-
+/* Values for client_data.listen_mode */
#define LISTEN_NONE 0
#define LISTEN_KERNEL 1
#define LISTEN_RAW 2
-static smallint listen_mode;
+/* Values for client_data.state */
/* initial state: (re)start DHCP negotiation */
#define INIT_SELECTING 0
/* discover was sent, DHCPOFFER reply received */
#define RENEW_REQUESTED 5
/* release, possibly manually requested (SIGUSR2) */
#define RELEASED 6
-static smallint state;
static int udhcp_raw_socket(int ifindex)
{
* SOCK_DGRAM: remove link-layer headers on input (SOCK_RAW keeps them)
* ETH_P_IP: want to receive only packets with IPv4 eth type
*/
- log2("got raw socket fd");
+ log3("got raw socket fd %d", fd);
memset(&sock, 0, sizeof(sock)); /* let's be deterministic */
sock.sll_family = AF_PACKET;
if (setsockopt_1(fd, SOL_PACKET, PACKET_AUXDATA) != 0) {
if (errno != ENOPROTOOPT)
- log1("can't set PACKET_AUXDATA on raw socket");
+ log1s("can't set PACKET_AUXDATA on raw socket");
}
- log1("created raw socket");
+ log1s("created raw socket");
return fd;
}
: "none"
);
- listen_mode = new_mode;
- if (sockfd >= 0) {
- close(sockfd);
- sockfd = -1;
+ client_data.listen_mode = new_mode;
+ if (client_data.sockfd >= 0) {
+ close(client_data.sockfd);
+ client_data.sockfd = -1;
}
if (new_mode == LISTEN_KERNEL)
- sockfd = udhcp_listen_socket(/*INADDR_ANY,*/ CLIENT_PORT, client_config.interface);
+ client_data.sockfd = udhcp_listen_socket(/*INADDR_ANY,*/ CLIENT_PORT, client_data.interface);
else if (new_mode != LISTEN_NONE)
- sockfd = udhcp_raw_socket(client_config.ifindex);
- /* else LISTEN_NONE: sockfd stays closed */
+ client_data.sockfd = udhcp_raw_socket(client_data.ifindex);
+ /* else LISTEN_NONE: client_data.sockfd stays closed */
}
/* Called only on SIGUSR1 */
static void perform_renew(void)
{
- bb_error_msg("performing DHCP renew");
- switch (state) {
+ bb_simple_info_msg("performing DHCP renew");
+ switch (client_data.state) {
case BOUND:
change_listen_mode(LISTEN_KERNEL);
case RENEWING:
case REBINDING:
- state = RENEW_REQUESTED;
+ client_data.state = RENEW_REQUESTED;
break;
case RENEW_REQUESTED: /* impatient are we? fine, square 1 */
udhcp_run_script(NULL, "deconfig");
case REQUESTING:
case RELEASED:
change_listen_mode(LISTEN_RAW);
- state = INIT_SELECTING;
+ client_data.state = INIT_SELECTING;
break;
case INIT_SELECTING:
break;
struct in_addr temp_addr;
/* send release packet */
- if (state == BOUND
- || state == RENEWING
- || state == REBINDING
- || state == RENEW_REQUESTED
+ if (client_data.state == BOUND
+ || client_data.state == RENEWING
+ || client_data.state == REBINDING
+ || client_data.state == RENEW_REQUESTED
) {
temp_addr.s_addr = server_addr;
strcpy(buffer, inet_ntoa(temp_addr));
temp_addr.s_addr = requested_ip;
- bb_error_msg("unicasting a release of %s to %s",
+ bb_info_msg("unicasting a release of %s to %s",
inet_ntoa(temp_addr), buffer);
send_release(server_addr, requested_ip); /* unicast */
}
- bb_error_msg("entering released state");
+ bb_simple_info_msg("entering released state");
/*
* We can be here on: SIGUSR2,
* or on exit (SIGTERM) and -R "release on quit" is specified.
udhcp_run_script(NULL, "deconfig");
change_listen_mode(LISTEN_NONE);
- state = RELEASED;
+ client_data.state = RELEASED;
}
static uint8_t* alloc_dhcp_option(int code, const char *str, int extra)
bb_daemonize(0);
logmode &= ~LOGMODE_STDIO;
/* rewrite pidfile, as our pid is different now */
- write_pidfile(client_config.pidfile);
+ write_pidfile(client_data.pidfile);
}
#endif
/* Default options */
IF_FEATURE_UDHCP_PORT(SERVER_PORT = 67;)
IF_FEATURE_UDHCP_PORT(CLIENT_PORT = 68;)
- client_config.interface = "eth0";
- client_config.script = CONFIG_UDHCPC_DEFAULT_SCRIPT;
+ client_data.interface = "eth0";
+ client_data.script = CONFIG_UDHCPC_DEFAULT_SCRIPT;
+ client_data.sockfd = -1;
str_V = "udhcp "BB_VER;
+ /* Make sure fd 0,1,2 are open */
+ /* Set up the signal pipe on fds 3,4 - must be before openlog() */
+ udhcp_sp_setup();
+
/* Parse command line */
opt = getopt32long(argv, "^"
/* O,x: list; -T,-t,-A take numeric param */
"\0" IF_UDHCP_VERBOSE("vv") /* -v is a counter */
, udhcpc_longopts
, &str_V, &str_h, &str_h, &str_F
- , &client_config.interface, &client_config.pidfile /* i,p */
+ , &client_data.interface, &client_data.pidfile /* i,p */
, &str_r /* r */
- , &client_config.script /* s */
+ , &client_data.script /* s */
, &discover_timeout, &discover_retries, &tryagain_timeout /* T,t,A */
, &list_O
, &list_x
);
if (opt & (OPT_h|OPT_H)) {
//msg added 2011-11
- bb_error_msg("option -h NAME is deprecated, use -x hostname:NAME");
- client_config.hostname = alloc_dhcp_option(DHCP_HOST_NAME, str_h, 0);
+ bb_simple_error_msg("option -h NAME is deprecated, use -x hostname:NAME");
+ client_data.hostname = alloc_dhcp_option(DHCP_HOST_NAME, str_h, 0);
}
if (opt & OPT_F) {
/* FQDN option format: [0x51][len][flags][0][0]<fqdn> */
- client_config.fqdn = alloc_dhcp_option(DHCP_FQDN, str_F, 3);
+ client_data.fqdn = alloc_dhcp_option(DHCP_FQDN, str_F, 3);
/* Flag bits: 0000NEOS
* S: 1 = Client requests server to update A RR in DNS as well as PTR
* O: 1 = Server indicates to client that DNS has been updated regardless
* N: 1 = Client requests server to not update DNS (S must be 0 then)
* Two [0] bytes which follow are deprecated and must be 0.
*/
- client_config.fqdn[OPT_DATA + 0] = 0x1;
- /*client_config.fqdn[OPT_DATA + 1] = 0; - xzalloc did it */
- /*client_config.fqdn[OPT_DATA + 2] = 0; */
+ client_data.fqdn[OPT_DATA + 0] = 0x1;
+ /*client_data.fqdn[OPT_DATA + 1] = 0; - xzalloc did it */
+ /*client_data.fqdn[OPT_DATA + 2] = 0; */
}
if (opt & OPT_r)
requested_ip = inet_addr(str_r);
n = udhcp_option_idx(optstr, dhcp_option_strings);
n = dhcp_optflags[n].code;
}
- client_config.opt_mask[n >> 3] |= 1 << (n & 7);
+ client_data.opt_mask[n >> 3] |= 1 << (n & 7);
}
if (!(opt & OPT_o)) {
unsigned i, n;
for (i = 0; (n = dhcp_optflags[i].code) != 0; i++) {
if (dhcp_optflags[i].flags & OPTION_REQ) {
- client_config.opt_mask[n >> 3] |= 1 << (n & 7);
+ client_data.opt_mask[n >> 3] |= 1 << (n & 7);
}
}
}
while (list_x) {
char *optstr = xstrdup(llist_pop(&list_x));
- udhcp_str2optset(optstr, &client_config.options,
+ udhcp_str2optset(optstr, &client_data.options,
dhcp_optflags, dhcp_option_strings,
/*dhcpv6:*/ 0
);
free(optstr);
}
- if (udhcp_read_interface(client_config.interface,
- &client_config.ifindex,
+ if (udhcp_read_interface(client_data.interface,
+ &client_data.ifindex,
NULL,
- client_config.client_mac)
+ client_data.client_mac)
) {
return 1;
}
clientid_mac_ptr = NULL;
- if (!(opt & OPT_C) && !udhcp_find_option(client_config.options, DHCP_CLIENT_ID)) {
+ if (!(opt & OPT_C) && !udhcp_find_option(client_data.options, DHCP_CLIENT_ID)) {
/* not suppressed and not set, set the default client ID */
- client_config.clientid = alloc_dhcp_option(DHCP_CLIENT_ID, "", 7);
- client_config.clientid[OPT_DATA] = 1; /* type: ethernet */
- clientid_mac_ptr = client_config.clientid + OPT_DATA+1;
- memcpy(clientid_mac_ptr, client_config.client_mac, 6);
+ client_data.clientid = alloc_dhcp_option(DHCP_CLIENT_ID, "", 7);
+ client_data.clientid[OPT_DATA] = 1; /* type: ethernet */
+ clientid_mac_ptr = client_data.clientid + OPT_DATA+1;
+ memcpy(clientid_mac_ptr, client_data.client_mac, 6);
}
if (str_V[0] != '\0') {
- // can drop -V, str_V, client_config.vendorclass,
+ // can drop -V, str_V, client_data.vendorclass,
// but need to add "vendor" to the list of recognized
// string opts for this to work;
// and need to tweak add_client_options() too...
// ...so the question is, should we?
//bb_error_msg("option -V VENDOR is deprecated, use -x vendor:VENDOR");
- client_config.vendorclass = alloc_dhcp_option(DHCP_VENDOR, str_V, 0);
+ client_data.vendorclass = alloc_dhcp_option(DHCP_VENDOR, str_V, 0);
}
#if !BB_MMU
logmode |= LOGMODE_SYSLOG;
}
- /* Make sure fd 0,1,2 are open */
- bb_sanitize_stdio();
/* Create pidfile */
- write_pidfile(client_config.pidfile);
+ write_pidfile(client_data.pidfile);
/* Goes to stdout (unless NOMMU) and possibly syslog */
- bb_error_msg("started, v"BB_VER);
- /* Set up the signal pipe */
- udhcp_sp_setup();
+ bb_simple_info_msg("started, v"BB_VER);
/* We want random_xid to be random... */
srand(monotonic_us());
- state = INIT_SELECTING;
+ client_data.state = INIT_SELECTING;
udhcp_run_script(NULL, "deconfig");
change_listen_mode(LISTEN_RAW);
packet_num = 0;
/* silence "uninitialized!" warning */
unsigned timestamp_before_wait = timestamp_before_wait;
- //bb_error_msg("sockfd:%d, listen_mode:%d", sockfd, listen_mode);
+ //bb_error_msg("sockfd:%d, listen_mode:%d", client_data.sockfd, client_data.listen_mode);
/* Was opening raw or udp socket here
- * if (listen_mode != LISTEN_NONE && sockfd < 0),
+ * if (client_data.listen_mode != LISTEN_NONE && client_data.sockfd < 0),
* but on fast network renew responses return faster
* than we open sockets. Thus this code is moved
* to change_listen_mode(). Thus we open listen socket
* BEFORE we send renew request (see "case BOUND:"). */
- udhcp_sp_fd_set(pfds, sockfd);
+ udhcp_sp_fd_set(pfds, client_data.sockfd);
tv = timeout - already_waited_sec;
retval = 0;
continue;
}
/* Else: an error occurred, panic! */
- bb_perror_msg_and_die("poll");
+ bb_simple_perror_msg_and_die("poll");
}
}
* or if the status of the bridge changed).
* Refresh ifindex and client_mac:
*/
- if (udhcp_read_interface(client_config.interface,
- &client_config.ifindex,
+ if (udhcp_read_interface(client_data.interface,
+ &client_data.ifindex,
NULL,
- client_config.client_mac)
+ client_data.client_mac)
) {
goto ret0; /* iface is gone? */
}
if (clientid_mac_ptr)
- memcpy(clientid_mac_ptr, client_config.client_mac, 6);
+ memcpy(clientid_mac_ptr, client_data.client_mac, 6);
/* We will restart the wait in any case */
already_waited_sec = 0;
- switch (state) {
+ switch (client_data.state) {
case INIT_SELECTING:
if (!discover_retries || packet_num < discover_retries) {
if (packet_num == 0)
udhcp_run_script(NULL, "leasefail");
#if BB_MMU /* -b is not supported on NOMMU */
if (opt & OPT_b) { /* background if no lease */
- bb_error_msg("no lease, forking to background");
+ bb_simple_info_msg("no lease, forking to background");
client_background();
/* do not background again! */
opt = ((opt & ~(OPT_b|OPT_n)) | OPT_f);
} else
#endif
if (opt & OPT_n) { /* abort if no lease */
- bb_error_msg("no lease, failing");
+ bb_simple_info_msg("no lease, failing");
retval = 1;
goto ret;
}
* were seen in the wild. Treat them similarly
* to "no response to discover" case */
change_listen_mode(LISTEN_RAW);
- state = INIT_SELECTING;
+ client_data.state = INIT_SELECTING;
goto leasefail;
case BOUND:
/* 1/2 lease passed, enter renewing state */
- state = RENEWING;
- client_config.first_secs = 0; /* make secs field count from 0 */
+ client_data.state = RENEWING;
+ client_data.first_secs = 0; /* make secs field count from 0 */
change_listen_mode(LISTEN_KERNEL);
- log1("entering renew state");
+ log1s("entering renew state");
/* fall right through */
case RENEW_REQUESTED: /* manual (SIGUSR1) renew */
case_RENEW_REQUESTED:
*/
}
/* Timed out or error, enter rebinding state */
- log1("entering rebinding state");
- state = REBINDING;
+ log1s("entering rebinding state");
+ client_data.state = REBINDING;
/* fall right through */
case REBINDING:
/* Switch to bcast receive */
continue;
}
/* Timed out, enter init state */
- bb_error_msg("lease lost, entering init state");
+ bb_simple_info_msg("lease lost, entering init state");
udhcp_run_script(NULL, "deconfig");
- state = INIT_SELECTING;
- client_config.first_secs = 0; /* make secs field count from 0 */
+ client_data.state = INIT_SELECTING;
+ client_data.first_secs = 0; /* make secs field count from 0 */
/*timeout = 0; - already is */
packet_num = 0;
continue;
/* Is it a signal? */
switch (udhcp_sp_read()) {
case SIGUSR1:
- client_config.first_secs = 0; /* make secs field count from 0 */
+ client_data.first_secs = 0; /* make secs field count from 0 */
already_waited_sec = 0;
perform_renew();
- if (state == RENEW_REQUESTED) {
+ if (client_data.state == RENEW_REQUESTED) {
/* We might be either on the same network
* (in which case renew might work),
* or we might be on a completely different one
timeout = INT_MAX;
continue;
case SIGTERM:
- bb_error_msg("received %s", "SIGTERM");
+ bb_info_msg("received %s", "SIGTERM");
goto ret0;
}
int len;
/* A packet is ready, read it */
- if (listen_mode == LISTEN_KERNEL)
- len = udhcp_recv_kernel_packet(&packet, sockfd);
+ if (client_data.listen_mode == LISTEN_KERNEL)
+ len = udhcp_recv_kernel_packet(&packet, client_data.sockfd);
else
- len = udhcp_recv_raw_packet(&packet, sockfd);
+ len = udhcp_recv_raw_packet(&packet, client_data.sockfd);
if (len == -1) {
/* Error is severe, reopen socket */
bb_error_msg("read error: "STRERROR_FMT", reopening socket" STRERROR_ERRNO);
sleep(discover_timeout); /* 3 seconds by default */
- change_listen_mode(listen_mode); /* just close and reopen */
+ change_listen_mode(client_data.listen_mode); /* just close and reopen */
}
/* If this packet will turn out to be unrelated/bogus,
* we will go back and wait for next one.
/* Ignore packets that aren't for us */
if (packet.hlen != 6
- || memcmp(packet.chaddr, client_config.client_mac, 6) != 0
+ || memcmp(packet.chaddr, client_data.client_mac, 6) != 0
) {
//FIXME: need to also check that last 10 bytes are zero
- log1("chaddr does not match, ignoring packet"); // log2?
+ log1("chaddr does not match%s", ", ignoring packet"); // log2?
continue;
}
message = udhcp_get_option(&packet, DHCP_MESSAGE_TYPE);
if (message == NULL) {
- bb_error_msg("no message type option, ignoring packet");
+ bb_info_msg("no message type option%s", ", ignoring packet");
continue;
}
- switch (state) {
+ switch (client_data.state) {
case INIT_SELECTING:
/* Must be a DHCPOFFER */
if (*message == DHCPOFFER) {
* might work too.
* "Next server" and router are definitely wrong ones to use, though...
*/
-/* We used to ignore pcakets without DHCP_SERVER_ID.
+/* We used to ignore packets without DHCP_SERVER_ID.
* I've got user reports from people who run "address-less" servers.
* They either supply DHCP_SERVER_ID of 0.0.0.0 or don't supply it at all.
* They say ISC DHCP client supports this case.
server_addr = 0;
temp = udhcp_get_option32(&packet, DHCP_SERVER_ID);
if (!temp) {
- bb_error_msg("no server ID, using 0.0.0.0");
+ bb_simple_info_msg("no server ID, using 0.0.0.0");
} else {
/* it IS unaligned sometimes, don't "optimize" */
move_from_unaligned32(server_addr, temp);
requested_ip = packet.yiaddr;
/* enter requesting state */
- state = REQUESTING;
+ client_data.state = REQUESTING;
timeout = 0;
packet_num = 0;
already_waited_sec = 0;
temp = udhcp_get_option32(&packet, DHCP_LEASE_TIME);
if (!temp) {
- bb_error_msg("no lease time with ACK, using 1 hour lease");
+ bb_simple_info_msg("no lease time with ACK, using 1 hour lease");
lease_seconds = 60 * 60;
} else {
/* it IS unaligned sometimes, don't "optimize" */
if (!arpping(packet.yiaddr,
NULL,
(uint32_t) 0,
- client_config.client_mac,
- client_config.interface,
+ client_data.client_mac,
+ client_data.interface,
arpping_ms)
) {
- bb_error_msg("offered address is in use "
+ bb_simple_info_msg("offered address is in use "
"(got ARP reply), declining");
send_decline(/*xid,*/ server_addr, packet.yiaddr);
- if (state != REQUESTING)
+ if (client_data.state != REQUESTING)
udhcp_run_script(NULL, "deconfig");
change_listen_mode(LISTEN_RAW);
- state = INIT_SELECTING;
- client_config.first_secs = 0; /* make secs field count from 0 */
+ client_data.state = INIT_SELECTING;
+ client_data.first_secs = 0; /* make secs field count from 0 */
requested_ip = 0;
timeout = tryagain_timeout;
packet_num = 0;
#endif
/* enter bound state */
temp_addr.s_addr = packet.yiaddr;
- bb_error_msg("lease of %s obtained, lease time %u",
+ bb_info_msg("lease of %s obtained, lease time %u",
inet_ntoa(temp_addr), (unsigned)lease_seconds);
requested_ip = packet.yiaddr;
start = monotonic_sec();
- udhcp_run_script(&packet, state == REQUESTING ? "bound" : "renew");
+ udhcp_run_script(&packet, client_data.state == REQUESTING ? "bound" : "renew");
already_waited_sec = (unsigned)monotonic_sec() - start;
timeout = lease_seconds / 2;
if ((unsigned)timeout < already_waited_sec) {
timeout = already_waited_sec = 0;
}
- state = BOUND;
+ client_data.state = BOUND;
change_listen_mode(LISTEN_NONE);
if (opt & OPT_q) { /* quit after lease */
goto ret0;
if (!temp) {
non_matching_svid:
log1("received DHCP NAK with wrong"
- " server ID, ignoring packet");
+ " server ID%s", ", ignoring packet");
continue;
}
move_from_unaligned32(svid, temp);
goto non_matching_svid;
}
/* return to init state */
- bb_error_msg("received %s", "DHCP NAK");
+ bb_info_msg("received %s", "DHCP NAK");
udhcp_run_script(&packet, "nak");
- if (state != REQUESTING)
+ if (client_data.state != REQUESTING)
udhcp_run_script(NULL, "deconfig");
change_listen_mode(LISTEN_RAW);
sleep(3); /* avoid excessive network traffic */
- state = INIT_SELECTING;
- client_config.first_secs = 0; /* make secs field count from 0 */
+ client_data.state = INIT_SELECTING;
+ client_data.first_secs = 0; /* make secs field count from 0 */
requested_ip = 0;
timeout = 0;
packet_num = 0;
perform_release(server_addr, requested_ip);
retval = 0;
ret:
- /*if (client_config.pidfile) - remove_pidfile has its own check */
- remove_pidfile(client_config.pidfile);
+ /*if (client_data.pidfile) - remove_pidfile has its own check */
+ remove_pidfile(client_data.pidfile);
return retval;
}
projects / oweals / busybox.git / blobdiff