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https://gitlab.torproject.org/tpo/core/tor.git
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r11548@Kushana: nickm | 2006-12-12 00:44:51 -0500
Merge whitespace and other changes from libevent svn:r9090
This commit is contained in:
parent
494e45482a
commit
a3a00df69d
@ -502,7 +502,7 @@ static void server_request_free_answers(struct server_request *req);
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static void server_port_free(struct evdns_server_port *port);
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static void server_port_ready_callback(int fd, short events, void *arg);
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#ifdef MS_WINDOWS
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#if defined(MS_WINDOWS) || defined(WIN32)
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static int
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last_error(int sock)
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{
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@ -578,13 +578,14 @@ evdns_set_log_fn(evdns_debug_log_fn_type fn)
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static void _evdns_log(int warn, const char *fmt, ...) EVDNS_LOG_CHECK;
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static void
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_evdns_log(int warn, const char *fmt, ...) {
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_evdns_log(int warn, const char *fmt, ...)
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{
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va_list args;
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static char buf[512];
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if (!evdns_log_fn)
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return;
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va_start(args,fmt);
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#ifdef MS_WINDOWS
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#if defined(MS_WINDOWS) || defined(WIN32)
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_vsnprintf(buf, sizeof(buf), fmt, args);
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#else
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vsnprintf(buf, sizeof(buf), fmt, args);
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@ -838,7 +839,7 @@ reply_callback(struct request *const req, u32 ttl, u32 err, struct reply *reply)
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return;
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case TYPE_AAAA:
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if (reply)
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req->user_callback(DNS_ERR_NONE, DNS_IPv4_AAAA,
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req->user_callback(DNS_ERR_NONE, DNS_IPv6_AAAA,
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reply->data.aaaa.addrcount, ttl,
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reply->data.aaaa.addresses,
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req->user_pointer);
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@ -850,8 +851,7 @@ reply_callback(struct request *const req, u32 ttl, u32 err, struct reply *reply)
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// this processes a parsed reply packet
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static void
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reply_handle(struct request *const req,
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u16 flags, u32 ttl, struct reply *reply) {
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reply_handle(struct request *const req, u16 flags, u32 ttl, struct reply *reply) {
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int error;
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static const int error_codes[] = {DNS_ERR_FORMAT, DNS_ERR_SERVERFAILED, DNS_ERR_NOTEXIST, DNS_ERR_NOTIMPL, DNS_ERR_REFUSED};
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@ -959,8 +959,7 @@ name_parse(u8 *packet, int length, int *idx, char *name_out, int name_out_len) {
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// parses a raw request from a nameserver.
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static int
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reply_parse(u8 *packet, int length)
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{
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reply_parse(u8 *packet, int length) {
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int j = 0; // index into packet
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u16 _t; // used by the macros
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u32 _t32; // used by the macros
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@ -990,9 +989,7 @@ reply_parse(u8 *packet, int length)
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req = request_find_from_trans_id(trans_id);
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if (!req) return -1;
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// XXXX should the other return points also call reply_handle? -NM
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// log("reqparse: trans was %d\n", (int)trans_id);
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memset(&reply, 0, sizeof(reply));
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@ -1029,24 +1026,22 @@ reply_parse(u8 *packet, int length)
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GET32(ttl);
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GET16(datalength);
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// log("@%d, Name %s, type %d, class %d, j=%d", pre, tmp_name, (int)type, (int)class, j);
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if (type == TYPE_A && class == CLASS_INET) {
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int addrcount, addrtocopy;
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if (req->request_type != type) {
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if (req->request_type != TYPE_A) {
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j += datalength; continue;
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}
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// XXXX do something sane with malformed answers.
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addrcount = datalength >> 2; // each address is 4 bytes long
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// XXXX do something sane with malformed A answers.
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addrcount = datalength >> 2;
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addrtocopy = MIN(MAX_ADDRS - reply.data.a.addrcount, (unsigned)addrcount);
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ttl_r = MIN(ttl_r, ttl);
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ttl_r = MIN(ttl_r, ttl);
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// we only bother with the first four addresses.
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if (j + 4*addrtocopy > length) return -1;
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memcpy(&reply.data.a.addresses[reply.data.a.addrcount],
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packet + j, 4*addrtocopy);
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reply.data.a.addrcount += addrtocopy;
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j += 4*addrtocopy;
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reply.data.a.addrcount += addrtocopy;
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reply.have_answer = 1;
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if (reply.data.a.addrcount == MAX_ADDRS) break;
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} else if (type == TYPE_PTR && class == CLASS_INET) {
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@ -1060,10 +1055,10 @@ reply_parse(u8 *packet, int length)
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break;
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} else if (type == TYPE_AAAA && class == CLASS_INET) {
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int addrcount, addrtocopy;
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if (req->request_type != type) {
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if (req->request_type != TYPE_AAAA) {
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j += datalength; continue;
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}
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// XXXX do something sane with malformed answers.
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// XXXX do something sane with malformed AAAA answers.
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addrcount = datalength >> 4; // each address is 16 bytes long
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addrtocopy = MIN(MAX_ADDRS - reply.data.aaaa.addrcount, (unsigned)addrcount);
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ttl_r = MIN(ttl_r, ttl);
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@ -1179,15 +1174,21 @@ transaction_id_pick(void) {
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const struct request *req = req_head, *started_at;
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#ifdef DNS_USE_CPU_CLOCK_FOR_ID
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struct timespec ts;
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const u16 trans_id = ts.tv_nsec & 0xffff;
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if (clock_gettime(CLOCK_MONOTONIC, &ts))
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abort();
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u16 trans_id;
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#ifdef CLOCK_MONOTONIC
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if (clock_gettime(CLOCK_MONOTONIC, &ts) == -1)
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#else
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if (clock_gettime(CLOCK_REALTIME, &ts) == -1)
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#endif
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event_err(1, "clock_gettime");
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trans_id = ts.tv_nsec & 0xffff;
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#endif
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#ifdef DNS_USE_GETTIMEOFDAY_FOR_ID
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struct timeval tv;
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const u16 trans_id = tv.tv_usec & 0xffff;
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u16 trans_id;
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gettimeofday(&tv, NULL);
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trans_id = tv.tv_usec & 0xffff;
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#endif
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#ifdef DNS_USE_OPENSSL_FOR_ID
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@ -2095,7 +2096,8 @@ evdns_transmit(void) {
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// exported function
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int
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evdns_count_nameservers(void) {
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evdns_count_nameservers(void)
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{
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const struct nameserver *server = server_head;
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int n = 0;
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if (!server)
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@ -2109,7 +2111,8 @@ evdns_count_nameservers(void) {
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// exported function
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int
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evdns_clear_nameservers_and_suspend(void) {
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evdns_clear_nameservers_and_suspend(void)
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{
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struct nameserver *server = server_head, *started_at = server_head;
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struct request *req = req_head, *req_started_at = req_head;
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@ -2158,7 +2161,8 @@ evdns_clear_nameservers_and_suspend(void) {
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// exported function
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int
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evdns_resume(void) {
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evdns_resume(void)
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{
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evdns_requests_pump_waiting_queue();
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return 0;
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}
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@ -2186,7 +2190,7 @@ evdns_nameserver_add(unsigned long int address) {
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ns->socket = socket(PF_INET, SOCK_DGRAM, 0);
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if (ns->socket < 0) { err = 1; goto out1; }
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#ifdef MS_WINDOWS
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#if defined(MS_WINDOWS) || defined(WIN32)
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{
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u_long nonblocking = 1;
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ioctlsocket(ns->socket, FIONBIO, &nonblocking);
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@ -2229,12 +2233,11 @@ evdns_nameserver_add(unsigned long int address) {
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return 0;
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out2:
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out2:
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CLOSE_SOCKET(ns->socket);
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out1:
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out1:
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free(ns);
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log(EVDNS_LOG_WARN, "Unable to add nameserver %s: error %d",
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debug_ntoa(address), err);
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log(EVDNS_LOG_WARN, "Unable to add nameserver %s: error %d", debug_ntoa(address), err);
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return err;
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}
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@ -2242,7 +2245,8 @@ evdns_nameserver_add(unsigned long int address) {
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int
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evdns_nameserver_ip_add(const char *ip_as_string) {
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struct in_addr ina;
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if (!inet_aton(ip_as_string, &ina)) return 4;
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if (!inet_aton(ip_as_string, &ina))
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return 4;
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return evdns_nameserver_add(ina.s_addr);
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}
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@ -2272,14 +2276,17 @@ string_num_dots(const char *s) {
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}
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static struct request *
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request_new(int type, const char *name, int flags, evdns_callback_type callback, void *user_ptr) {
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const char issuing_now = (global_requests_inflight < global_max_requests_inflight) ? 1 : 0;
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request_new(int type, const char *name, int flags,
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evdns_callback_type callback, void *user_ptr) {
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const char issuing_now =
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(global_requests_inflight < global_max_requests_inflight) ? 1 : 0;
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const int name_len = strlen(name);
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const int request_max_len = evdns_request_len(name_len);
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const u16 trans_id = issuing_now ? transaction_id_pick() : 0xffff;
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// the request data is alloced in a single block with the header
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struct request *const req = (struct request *) malloc(sizeof(struct request) + request_max_len);
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struct request *const req =
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(struct request *) malloc(sizeof(struct request) + request_max_len);
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int rlen;
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(void) flags;
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@ -2304,7 +2311,7 @@ request_new(int type, const char *name, int flags, evdns_callback_type callback,
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req->next = req->prev = NULL;
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return req;
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err1:
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err1:
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free(req);
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return NULL;
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}
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@ -2331,9 +2338,9 @@ int evdns_resolve_ipv4(const char *name, int flags,
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struct request *const req =
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request_new(TYPE_A, name, flags, callback, ptr);
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if (req == NULL)
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return 1;
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return (1);
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request_submit(req);
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return 0;
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return (0);
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} else {
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return search_request_new(TYPE_A, name, flags, callback, ptr);
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}
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@ -2347,9 +2354,9 @@ int evdns_resolve_ipv6(const char *name, int flags,
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struct request *const req =
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request_new(TYPE_AAAA, name, flags, callback, ptr);
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if (req == NULL)
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return 1;
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return (1);
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request_submit(req);
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return 0;
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return (0);
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} else {
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return search_request_new(TYPE_AAAA, name, flags, callback, ptr);
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}
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@ -2752,7 +2759,7 @@ evdns_resolv_conf_parse(int flags, const char *const filename) {
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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evdns_resolv_set_defaults(flags);
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return 0;
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return 1;
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}
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if (fstat(fd, &st)) { err = 2; goto out1; }
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@ -2799,7 +2806,7 @@ out1:
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return err;
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}
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#ifdef MS_WINDOWS
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#if defined(MS_WINDOWS) || defined(WIN32)
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// Add multiple nameservers from a space-or-comma-separated list.
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static int
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evdns_nameserver_ip_add_line(const char *ips) {
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@ -2828,7 +2835,8 @@ typedef DWORD(WINAPI *GetNetworkParams_fn_t)(FIXED_INFO *, DWORD*);
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// Use the windows GetNetworkParams interface in iphlpapi.dll to
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// figure out what our nameservers are.
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static int
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load_nameservers_with_getnetworkparams(void) {
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load_nameservers_with_getnetworkparams(void)
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{
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// Based on MSDN examples and inspection of c-ares code.
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FIXED_INFO *fixed;
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HMODULE handle = 0;
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@ -2844,7 +2852,6 @@ load_nameservers_with_getnetworkparams(void) {
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status = -1;
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goto done;
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}
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if (!(fn = (GetNetworkParams_fn_t) GetProcAddress(handle, "GetNetworkParams"))) {
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log(EVDNS_LOG_WARN, "Could not get address of function.");
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//same as above
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@ -2853,9 +2860,7 @@ load_nameservers_with_getnetworkparams(void) {
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}
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buf = malloc(size);
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if (!buf) {
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status = 4;
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goto done;
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if (!buf) { status = 4; goto done; }
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}
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fixed = buf;
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r = fn(fixed, &size);
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@ -2909,7 +2914,8 @@ load_nameservers_with_getnetworkparams(void) {
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}
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static int
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config_nameserver_from_reg_key(HKEY key, const char *subkey) {
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config_nameserver_from_reg_key(HKEY key, const char *subkey)
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{
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char *buf;
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DWORD bufsz = 0, type = 0;
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int status = 0;
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@ -2934,7 +2940,8 @@ config_nameserver_from_reg_key(HKEY key, const char *subkey) {
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#define WIN_NS_NT_KEY SERVICES_KEY "Tcpip\\Parameters"
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static int
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load_nameservers_from_registry(void) {
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load_nameservers_from_registry(void)
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{
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int found = 0;
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int r;
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#define TRY(k, name) \
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@ -2987,10 +2994,10 @@ load_nameservers_from_registry(void) {
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}
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int
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evdns_config_windows_nameservers(void) {
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evdns_config_windows_nameservers(void)
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{
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if (load_nameservers_with_getnetworkparams() == 0)
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return 0;
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return load_nameservers_from_registry();
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}
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#endif
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@ -2999,7 +3006,7 @@ int
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evdns_init(void)
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{
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int res = 0;
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#ifdef MS_WINDOWS
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#if defined(MS_WINDOWS) || defined(WIN32)
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evdns_config_windows_nameservers();
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#else
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res = evdns_resolv_conf_parse(DNS_OPTIONS_ALL, "/etc/resolv.conf");
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@ -41,7 +41,7 @@
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#define DNS_IPv4_A 1
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#define DNS_PTR 2
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#define DNS_IPv4_AAAA 3
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#define DNS_IPv6_AAAA 3
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#define DNS_QUERY_NO_SEARCH 1
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@ -50,11 +50,18 @@
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#define DNS_OPTION_MISC 4
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#define DNS_OPTIONS_ALL 7
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/*
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* The callback that contains the results from a lookup.
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* - type is either DNS_IPv4_A or DNS_IPv6_AAAA or DNS_PTR
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* - count contains the number of addresses of form type
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* - ttl is the number of seconds the resolution may be cached for.
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* - addresses needs to be cast according to type
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*/
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typedef void (*evdns_callback_type) (int result, char type, int count, int ttl, void *addresses, void *arg);
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int evdns_init(void);
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void evdns_shutdown(int fail_requests);
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const char * evdns_err_to_string(int err);
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const char *evdns_err_to_string(int err);
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int evdns_nameserver_add(unsigned long int address);
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int evdns_count_nameservers(void);
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int evdns_clear_nameservers_and_suspend(void);
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@ -64,8 +71,8 @@ int evdns_resolve_ipv4(const char *name, int flags, evdns_callback_type callback
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int evdns_resolve_ipv6(const char *name, int flags, evdns_callback_type callback, void *ptr);
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struct in_addr;
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struct in6_addr;
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int evdns_resolve_reverse(struct in_addr *addr, int flags, evdns_callback_type callback, void *ptr);
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int evdns_resolve_reverse_ipv6(struct in6_addr *addr, int flags, evdns_callback_type callback, void *ptr);
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int evdns_resolve_reverse(struct in_addr *in, int flags, evdns_callback_type callback, void *ptr);
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int evdns_resolve_reverse_ipv6(struct in6_addr *in, int flags, evdns_callback_type callback, void *ptr);
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int evdns_resolv_conf_parse(int flags, const char *);
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#ifdef MS_WINDOWS
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int evdns_config_windows_nameservers(void);
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@ -74,7 +81,7 @@ void evdns_search_clear(void);
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void evdns_search_add(const char *domain);
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void evdns_search_ndots_set(const int ndots);
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typedef void (*evdns_debug_log_fn_type)(int warn, const char *msg);
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typedef void (*evdns_debug_log_fn_type)(int is_warning, const char *msg);
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void evdns_set_log_fn(evdns_debug_log_fn_type fn);
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#define DNS_NO_SEARCH 1
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