udhcp: rename server_config to server_data
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
726cbb1be8
commit
91755cb16d
@ -46,7 +46,7 @@
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/* globals */
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#define g_leases ((struct dyn_lease*)ptr_to_globals)
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/* struct server_config_t server_config is in bb_common_bufsiz1 */
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/* struct server_data_t server_data is in bb_common_bufsiz1 */
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struct static_lease {
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struct static_lease *next;
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@ -100,7 +100,7 @@ static void add_static_lease(struct static_lease **st_lease_pp,
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/* Find static lease IP by mac */
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static uint32_t get_static_nip_by_mac(void *mac)
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{
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struct static_lease *st_lease = server_config.static_leases;
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struct static_lease *st_lease = server_data.static_leases;
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while (st_lease) {
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if (memcmp(st_lease->mac, mac, 6) == 0)
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@ -113,7 +113,7 @@ static uint32_t get_static_nip_by_mac(void *mac)
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static int is_nip_reserved_as_static(uint32_t nip)
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{
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struct static_lease *st_lease = server_config.static_leases;
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struct static_lease *st_lease = server_data.static_leases;
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while (st_lease) {
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if (st_lease->nip == nip)
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@ -133,7 +133,7 @@ static struct dyn_lease *oldest_expired_lease(void)
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/* Unexpired leases have g_leases[i].expires >= current time
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* and therefore can't ever match */
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for (i = 0; i < server_config.max_leases; i++) {
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for (i = 0; i < server_data.max_leases; i++) {
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if (g_leases[i].expires == 0 /* empty entry */
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|| g_leases[i].expires < oldest_time
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) {
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@ -151,7 +151,7 @@ static void clear_leases(const uint8_t *chaddr, uint32_t yiaddr)
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{
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unsigned i;
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for (i = 0; i < server_config.max_leases; i++) {
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for (i = 0; i < server_data.max_leases; i++) {
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if ((chaddr && memcmp(g_leases[i].lease_mac, chaddr, 6) == 0)
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|| (yiaddr && g_leases[i].lease_nip == yiaddr)
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) {
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@ -216,7 +216,7 @@ static struct dyn_lease *find_lease_by_mac(const uint8_t *mac)
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{
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unsigned i;
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for (i = 0; i < server_config.max_leases; i++)
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for (i = 0; i < server_data.max_leases; i++)
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if (memcmp(g_leases[i].lease_mac, mac, 6) == 0)
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return &g_leases[i];
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@ -228,7 +228,7 @@ static struct dyn_lease *find_lease_by_nip(uint32_t nip)
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{
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unsigned i;
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for (i = 0; i < server_config.max_leases; i++)
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for (i = 0; i < server_data.max_leases; i++)
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if (g_leases[i].lease_nip == nip)
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return &g_leases[i];
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@ -242,17 +242,17 @@ static int nobody_responds_to_arp(uint32_t nip, const uint8_t *safe_mac, unsigne
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int r;
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r = arpping(nip, safe_mac,
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server_config.server_nip,
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server_config.server_mac,
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server_config.interface,
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server_data.server_nip,
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server_data.server_mac,
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server_data.interface,
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arpping_ms);
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if (r)
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return r;
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temp.s_addr = nip;
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bb_info_msg("%s belongs to someone, reserving it for %u seconds",
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inet_ntoa(temp), (unsigned)server_config.conflict_time);
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add_lease(NULL, nip, server_config.conflict_time, NULL, 0);
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inet_ntoa(temp), (unsigned)server_data.conflict_time);
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add_lease(NULL, nip, server_data.conflict_time, NULL, 0);
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return 0;
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}
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@ -274,12 +274,12 @@ static uint32_t find_free_or_expired_nip(const uint8_t *safe_mac, unsigned arppi
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hash += safe_mac[i] + (hash << 6) + (hash << 16) - hash;
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/* pick a seed based on hwaddr then iterate until we find a free address. */
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addr = server_config.start_ip
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+ (hash % (1 + server_config.end_ip - server_config.start_ip));
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addr = server_data.start_ip
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+ (hash % (1 + server_data.end_ip - server_data.start_ip));
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stop = addr;
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#else
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addr = server_config.start_ip;
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#define stop (server_config.end_ip + 1)
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addr = server_data.start_ip;
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#define stop (server_data.end_ip + 1)
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#endif
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do {
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uint32_t nip;
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@ -293,7 +293,7 @@ static uint32_t find_free_or_expired_nip(const uint8_t *safe_mac, unsigned arppi
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goto next_addr;
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nip = htonl(addr);
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/* skip our own address */
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if (nip == server_config.server_nip)
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if (nip == server_data.server_nip)
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goto next_addr;
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/* is this a static lease addr? */
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if (is_nip_reserved_as_static(nip))
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@ -312,8 +312,8 @@ static uint32_t find_free_or_expired_nip(const uint8_t *safe_mac, unsigned arppi
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next_addr:
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addr++;
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#if ENABLE_FEATURE_UDHCPD_BASE_IP_ON_MAC
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if (addr > server_config.end_ip)
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addr = server_config.start_ip;
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if (addr > server_data.end_ip)
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addr = server_data.start_ip;
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#endif
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} while (addr != stop);
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@ -386,7 +386,7 @@ struct config_keyword {
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const char *def;
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};
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#define OFS(field) offsetof(struct server_config_t, field)
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#define OFS(field) offsetof(struct server_data_t, field)
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static const struct config_keyword keywords[] = {
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/* keyword handler variable address default */
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@ -422,17 +422,17 @@ static NOINLINE void read_config(const char *file)
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char *token[2];
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for (i = 0; i < KWS_WITH_DEFAULTS; i++)
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keywords[i].handler(keywords[i].def, (char*)&server_config + keywords[i].ofs);
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keywords[i].handler(keywords[i].def, (char*)&server_data + keywords[i].ofs);
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parser = config_open(file);
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while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
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for (k = keywords, i = 0; i < ARRAY_SIZE(keywords); k++, i++) {
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if (strcasecmp(token[0], k->keyword) == 0) {
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if (!k->handler(token[1], (char*)&server_config + k->ofs)) {
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if (!k->handler(token[1], (char*)&server_data + k->ofs)) {
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bb_error_msg("can't parse line %u in %s",
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parser->lineno, file);
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/* reset back to the default value */
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k->handler(k->def, (char*)&server_config + k->ofs);
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k->handler(k->def, (char*)&server_data + k->ofs);
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}
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break;
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}
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@ -440,8 +440,8 @@ static NOINLINE void read_config(const char *file)
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}
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config_close(parser);
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server_config.start_ip = ntohl(server_config.start_ip);
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server_config.end_ip = ntohl(server_config.end_ip);
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server_data.start_ip = ntohl(server_data.start_ip);
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server_data.end_ip = ntohl(server_data.end_ip);
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}
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static void write_leases(void)
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@ -451,7 +451,7 @@ static void write_leases(void)
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leasetime_t curr;
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int64_t written_at;
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fd = open_or_warn(server_config.lease_file, O_WRONLY|O_CREAT|O_TRUNC);
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fd = open_or_warn(server_data.lease_file, O_WRONLY|O_CREAT|O_TRUNC);
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if (fd < 0)
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return;
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@ -460,7 +460,7 @@ static void write_leases(void)
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written_at = SWAP_BE64(written_at);
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full_write(fd, &written_at, sizeof(written_at));
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for (i = 0; i < server_config.max_leases; i++) {
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for (i = 0; i < server_data.max_leases; i++) {
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leasetime_t tmp_time;
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if (g_leases[i].lease_nip == 0)
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@ -483,10 +483,10 @@ static void write_leases(void)
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}
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close(fd);
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if (server_config.notify_file) {
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if (server_data.notify_file) {
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char *argv[3];
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argv[0] = server_config.notify_file;
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argv[1] = server_config.lease_file;
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argv[0] = server_data.notify_file;
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argv[1] = server_data.lease_file;
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argv[2] = NULL;
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spawn_and_wait(argv);
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}
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@ -517,7 +517,7 @@ static NOINLINE void read_leases(const char *file)
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while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
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uint32_t y = ntohl(lease.lease_nip);
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if (y >= server_config.start_ip && y <= server_config.end_ip) {
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if (y >= server_data.start_ip && y <= server_data.end_ip) {
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signed_leasetime_t expires = ntohl(lease.expires) - (signed_leasetime_t)time_passed;
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uint32_t static_nip;
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@ -590,9 +590,9 @@ static void send_packet_to_client(struct dhcp_packet *dhcp_pkt, int force_broadc
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}
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udhcp_send_raw_packet(dhcp_pkt,
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/*src*/ server_config.server_nip, SERVER_PORT,
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/*src*/ server_data.server_nip, SERVER_PORT,
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/*dst*/ ciaddr, CLIENT_PORT, chaddr,
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server_config.ifindex);
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server_data.ifindex);
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}
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/* Send a packet to gateway_nip using the kernel ip stack */
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@ -601,7 +601,7 @@ static void send_packet_to_relay(struct dhcp_packet *dhcp_pkt)
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log1("forwarding packet to relay");
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udhcp_send_kernel_packet(dhcp_pkt,
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server_config.server_nip, SERVER_PORT,
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server_data.server_nip, SERVER_PORT,
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dhcp_pkt->gateway_nip, SERVER_PORT);
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}
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@ -633,7 +633,7 @@ static void init_packet(struct dhcp_packet *packet, struct dhcp_packet *oldpacke
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packet->flags = oldpacket->flags;
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packet->gateway_nip = oldpacket->gateway_nip;
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packet->ciaddr = oldpacket->ciaddr;
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udhcp_add_simple_option(packet, DHCP_SERVER_ID, server_config.server_nip);
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udhcp_add_simple_option(packet, DHCP_SERVER_ID, server_data.server_nip);
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}
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/* Fill options field, siaddr_nip, and sname and boot_file fields.
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@ -646,7 +646,7 @@ static void add_server_options(struct dhcp_packet *packet)
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client_hostname_opt = NULL;
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if (packet->yiaddr) { /* if we aren't from send_inform()... */
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struct static_lease *st_lease = server_config.static_leases;
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struct static_lease *st_lease = server_data.static_leases;
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while (st_lease) {
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if (st_lease->nip == packet->yiaddr) {
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if (st_lease->opt[0] != 0)
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@ -657,7 +657,7 @@ static void add_server_options(struct dhcp_packet *packet)
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}
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}
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config_opts = server_config.options;
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config_opts = server_data.options;
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while (config_opts) {
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if (config_opts->data[OPT_CODE] != DHCP_LEASE_TIME) {
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/* ^^^^
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@ -684,25 +684,25 @@ static void add_server_options(struct dhcp_packet *packet)
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if (client_hostname_opt)
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udhcp_add_binary_option(packet, client_hostname_opt);
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packet->siaddr_nip = server_config.siaddr_nip;
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packet->siaddr_nip = server_data.siaddr_nip;
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if (server_config.sname)
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strncpy((char*)packet->sname, server_config.sname, sizeof(packet->sname) - 1);
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if (server_config.boot_file)
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strncpy((char*)packet->file, server_config.boot_file, sizeof(packet->file) - 1);
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if (server_data.sname)
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strncpy((char*)packet->sname, server_data.sname, sizeof(packet->sname) - 1);
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if (server_data.boot_file)
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strncpy((char*)packet->file, server_data.boot_file, sizeof(packet->file) - 1);
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}
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static uint32_t select_lease_time(struct dhcp_packet *packet)
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{
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uint32_t lease_time_sec = server_config.max_lease_sec;
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uint32_t lease_time_sec = server_data.max_lease_sec;
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uint8_t *lease_time_opt = udhcp_get_option32(packet, DHCP_LEASE_TIME);
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if (lease_time_opt) {
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move_from_unaligned32(lease_time_sec, lease_time_opt);
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lease_time_sec = ntohl(lease_time_sec);
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if (lease_time_sec > server_config.max_lease_sec)
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lease_time_sec = server_config.max_lease_sec;
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if (lease_time_sec < server_config.min_lease_sec)
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lease_time_sec = server_config.min_lease_sec;
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if (lease_time_sec > server_data.max_lease_sec)
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lease_time_sec = server_data.max_lease_sec;
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if (lease_time_sec < server_data.min_lease_sec)
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lease_time_sec = server_data.min_lease_sec;
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}
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return lease_time_sec;
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}
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@ -737,8 +737,8 @@ static NOINLINE void send_offer(struct dhcp_packet *oldpacket,
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/* Or: if client has requested an IP */
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else if (requested_nip != 0
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/* and the IP is in the lease range */
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&& ntohl(requested_nip) >= server_config.start_ip
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&& ntohl(requested_nip) <= server_config.end_ip
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&& ntohl(requested_nip) >= server_data.start_ip
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&& ntohl(requested_nip) <= server_data.end_ip
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/* and */
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&& ( !(lease = find_lease_by_nip(requested_nip)) /* is not already taken */
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|| is_expired_lease(lease) /* or is taken, but expired */
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@ -758,7 +758,7 @@ static NOINLINE void send_offer(struct dhcp_packet *oldpacket,
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/* Reserve the IP for a short time hoping to get DHCPREQUEST soon */
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p_host_name = (const char*) udhcp_get_option(oldpacket, DHCP_HOST_NAME);
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lease = add_lease(packet.chaddr, packet.yiaddr,
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server_config.offer_time,
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server_data.offer_time,
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p_host_name,
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p_host_name ? (unsigned char)p_host_name[OPT_LEN - OPT_DATA] : 0
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);
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@ -886,7 +886,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
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}
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if (opt & 4) { /* -I */
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len_and_sockaddr *lsa = xhost_and_af2sockaddr(str_I, 0, AF_INET);
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server_config.server_nip = lsa->u.sin.sin_addr.s_addr;
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server_data.server_nip = lsa->u.sin.sin_addr.s_addr;
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free(lsa);
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}
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#if ENABLE_FEATURE_UDHCP_PORT
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@ -901,42 +901,42 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
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* otherwise NOMMU machines will parse config twice */
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read_config(argv[0] ? argv[0] : DHCPD_CONF_FILE);
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/* prevent poll timeout overflow */
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if (server_config.auto_time > INT_MAX / 1000)
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server_config.auto_time = INT_MAX / 1000;
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if (server_data.auto_time > INT_MAX / 1000)
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server_data.auto_time = INT_MAX / 1000;
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/* Make sure fd 0,1,2 are open */
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bb_sanitize_stdio();
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/* Create pidfile */
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write_pidfile(server_config.pidfile);
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write_pidfile(server_data.pidfile);
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/* if (!..) bb_perror_msg("can't create pidfile %s", pidfile); */
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bb_info_msg("started, v"BB_VER);
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option = udhcp_find_option(server_config.options, DHCP_LEASE_TIME);
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server_config.max_lease_sec = DEFAULT_LEASE_TIME;
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option = udhcp_find_option(server_data.options, DHCP_LEASE_TIME);
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server_data.max_lease_sec = DEFAULT_LEASE_TIME;
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if (option) {
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move_from_unaligned32(server_config.max_lease_sec, option->data + OPT_DATA);
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server_config.max_lease_sec = ntohl(server_config.max_lease_sec);
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move_from_unaligned32(server_data.max_lease_sec, option->data + OPT_DATA);
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server_data.max_lease_sec = ntohl(server_data.max_lease_sec);
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}
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/* Sanity check */
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num_ips = server_config.end_ip - server_config.start_ip + 1;
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if (server_config.max_leases > num_ips) {
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num_ips = server_data.end_ip - server_data.start_ip + 1;
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if (server_data.max_leases > num_ips) {
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bb_error_msg("max_leases=%u is too big, setting to %u",
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(unsigned)server_config.max_leases, num_ips);
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server_config.max_leases = num_ips;
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(unsigned)server_data.max_leases, num_ips);
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server_data.max_leases = num_ips;
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}
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/* this sets g_leases */
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SET_PTR_TO_GLOBALS(xzalloc(server_config.max_leases * sizeof(g_leases[0])));
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SET_PTR_TO_GLOBALS(xzalloc(server_data.max_leases * sizeof(g_leases[0])));
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read_leases(server_config.lease_file);
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read_leases(server_data.lease_file);
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if (udhcp_read_interface(server_config.interface,
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&server_config.ifindex,
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(server_config.server_nip == 0 ? &server_config.server_nip : NULL),
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server_config.server_mac)
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if (udhcp_read_interface(server_data.interface,
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&server_data.ifindex,
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(server_data.server_nip == 0 ? &server_data.server_nip : NULL),
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server_data.server_mac)
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) {
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retval = 1;
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goto ret;
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@ -946,7 +946,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
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udhcp_sp_setup();
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continue_with_autotime:
|
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timeout_end = monotonic_sec() + server_config.auto_time;
|
||||
timeout_end = monotonic_sec() + server_data.auto_time;
|
||||
while (1) { /* loop until universe collapses */
|
||||
struct pollfd pfds[2];
|
||||
struct dhcp_packet packet;
|
||||
@ -960,14 +960,14 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
|
||||
|
||||
if (server_socket < 0) {
|
||||
server_socket = udhcp_listen_socket(/*INADDR_ANY,*/ SERVER_PORT,
|
||||
server_config.interface);
|
||||
server_data.interface);
|
||||
}
|
||||
|
||||
udhcp_sp_fd_set(pfds, server_socket);
|
||||
|
||||
new_tv:
|
||||
tv = -1;
|
||||
if (server_config.auto_time) {
|
||||
if (server_data.auto_time) {
|
||||
tv = timeout_end - monotonic_sec();
|
||||
if (tv <= 0) {
|
||||
write_leases:
|
||||
@ -1037,7 +1037,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
|
||||
if (server_id_opt) {
|
||||
uint32_t server_id_network_order;
|
||||
move_from_unaligned32(server_id_network_order, server_id_opt);
|
||||
if (server_id_network_order != server_config.server_nip) {
|
||||
if (server_id_network_order != server_data.server_nip) {
|
||||
/* client talks to somebody else */
|
||||
log1("server ID doesn't match, ignoring");
|
||||
continue;
|
||||
@ -1204,7 +1204,7 @@ o DHCPREQUEST generated during REBINDING state:
|
||||
&& requested_nip == lease->lease_nip
|
||||
) {
|
||||
memset(lease->lease_mac, 0, sizeof(lease->lease_mac));
|
||||
lease->expires = time(NULL) + server_config.decline_time;
|
||||
lease->expires = time(NULL) + server_data.decline_time;
|
||||
}
|
||||
break;
|
||||
|
||||
@ -1235,7 +1235,7 @@ o DHCPREQUEST generated during REBINDING state:
|
||||
ret0:
|
||||
retval = 0;
|
||||
ret:
|
||||
/*if (server_config.pidfile) - server_config.pidfile is never NULL */
|
||||
remove_pidfile(server_config.pidfile);
|
||||
/*if (server_data.pidfile) - server_data.pidfile is never NULL */
|
||||
remove_pidfile(server_data.pidfile);
|
||||
return retval;
|
||||
}
|
||||
|
||||
@ -17,7 +17,7 @@ PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
|
||||
|
||||
struct static_lease;
|
||||
|
||||
struct server_config_t {
|
||||
struct server_data_t {
|
||||
char *interface; /* interface to use */
|
||||
//TODO: ifindex, server_nip, server_mac
|
||||
// are obtained from interface name.
|
||||
@ -53,12 +53,12 @@ struct server_config_t {
|
||||
struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */
|
||||
} FIX_ALIASING;
|
||||
|
||||
#define server_config (*(struct server_config_t*)bb_common_bufsiz1)
|
||||
#define server_data (*(struct server_data_t*)bb_common_bufsiz1)
|
||||
/* client_data sits in 2nd half of bb_common_bufsiz1 */
|
||||
|
||||
#if ENABLE_FEATURE_UDHCP_PORT
|
||||
#define SERVER_PORT (server_config.port)
|
||||
#define SERVER_PORT6 (server_config.port)
|
||||
#define SERVER_PORT (server_data.port)
|
||||
#define SERVER_PORT6 (server_data.port)
|
||||
#else
|
||||
#define SERVER_PORT 67
|
||||
#define SERVER_PORT6 547
|
||||
|
||||
Loading…
Reference in New Issue
Block a user