Merge "Remove vestigial 'sortlist' code" (23bb56e1) · Commits · e / os / android_packages_modules_DnsResolver

gethnamaddr.cpp

+3 −51

Original line number	Diff line number	Diff line
		@@ -106,13 +106,10 @@ typedef union {
		char ac;
		} align;

		static struct hostent* getanswer(const querybuf, int, const char, int, res_state, struct hostent*,
		char, size_t, int);
		static void convert_v4v6_hostent(struct hostent* hp, char** bpp, char* ep,
		const std::function<void(struct hostent* hp)>& mapping_param,
		const std::function<void(char* src, char* dst)>& mapping_addr);
		static void pad_v4v6_hostent(struct hostent* hp, char** bpp, char* ep);
		static void addrsort(char**, int, res_state);

		static int dns_gethtbyaddr(const unsigned char* uaddr, int len, int af,
		const android_net_context* netcontext, getnamaddr* info,
		@@ -145,8 +142,7 @@ static int android_gethostbyaddrfornetcontext_proxy(const void* addr, socklen_t
		} while (0)

		static struct hostent* getanswer(const querybuf* answer, int anslen, const char* qname, int qtype,
		res_state res, struct hostent* hent, char* buf, size_t buflen,
		int* he) {
		struct hostent* hent, char* buf, size_t buflen, int* he) {
		const HEADER* hp;
		const uint8_t* cp;
		int n;
		@@ -369,12 +365,6 @@ static struct hostent* getanswer(const querybuf* answer, int anslen, const char*
		}
		if (haveanswer) {
		*hap = NULL;
		/*
		* Note: we sort even if host can take only one address
		* in its return structures - should give it the "best"
		* address in that case, not some random one
		*/
		if (res->nsort && haveanswer > 1 && qtype == T_A) addrsort(addr_ptrs, haveanswer, res);
		if (!hent->h_name) {
		n = (int) strlen(qname) + 1; /* for the \0 */
		if (n > ep - bp \|\| n >= MAXHOSTNAMELEN) goto no_recovery;
		@@ -691,44 +681,6 @@ static void pad_v4v6_hostent(struct hostent* hp, char** bpp, char* ep) {
		});
		}

		static void addrsort(char** ap, int num, res_state res) {
		int i, j;
		char** p;
		short aval[MAXADDRS];
		int needsort = 0;

		_DIAGASSERT(ap != NULL);

		p = ap;
		for (i = 0; i < num; i++, p++) {
		for (j = 0; (unsigned) j < res->nsort; j++)
		if (res->sort_list[j].addr.s_addr ==
		(((struct in_addr) (void) (*p))->s_addr & res->sort_list[j].mask))
		break;
		aval[i] = j;
		if (needsort == 0 && i > 0 && j < aval[i - 1]) needsort = i;
		}
		if (!needsort) return;

		while (needsort < num) {
		for (j = needsort - 1; j >= 0; j--) {
		if (aval[j] > aval[j + 1]) {
		char* hp;

		i = aval[j];
		aval[j] = aval[j + 1];
		aval[j + 1] = i;

		hp = ap[j];
		ap[j] = ap[j + 1];
		ap[j + 1] = hp;
		} else
		break;
		}
		needsort++;
		}
		}

		static int dns_gethtbyname(const char* name, int addr_type, getnamaddr* info) {
		int n, type;
		info->hp->h_addrtype = addr_type;
		@@ -759,7 +711,7 @@ static int dns_gethtbyname(const char* name, int addr_type, getnamaddr* info) {
		// See also herrnoToAiErrno().
		return herrnoToAiErrno(he);
		}
		hostent* hp = getanswer(buf.get(), n, name, type, res, info->hp, info->buf, info->buflen, &he);
		hostent* hp = getanswer(buf.get(), n, name, type, info->hp, info->buf, info->buflen, &he);
		if (hp == NULL) return herrnoToAiErrno(he);

		return 0;
		@@ -824,7 +776,7 @@ static int dns_gethtbyaddr(const unsigned char* uaddr, int len, int af,
		// See also herrnoToAiErrno().
		return herrnoToAiErrno(he);
		}
		hostent* hp = getanswer(buf.get(), n, qbuf, T_PTR, res, info->hp, info->buf, info->buflen, &he);
		hostent* hp = getanswer(buf.get(), n, qbuf, T_PTR, info->hp, info->buf, info->buflen, &he);
		if (hp == NULL) return herrnoToAiErrno(he);

		char* bf = (char*) (hp->h_addr_list + 2);

res_init.cpp

+0 −3

Original line number	Diff line number	Diff line
		@@ -120,10 +120,7 @@ int res_ninit(res_state statp) {
		if (statp->_u._ext.ext != NULL) {
		memset(statp->_u._ext.ext, 0, sizeof(*statp->_u._ext.ext));
		statp->_u._ext.ext->nsaddrs[0].sin = statp->nsaddr;
		strcpy(statp->_u._ext.ext->nsuffix, "ip6.arpa");
		strcpy(statp->_u._ext.ext->nsuffix2, "ip6.int");
		}
		statp->nsort = 0;
		res_setservers(statp, u, nserv);

		if (nserv > 0) {

res_state_ext.h

+0 −9

Original line number	Diff line number	Diff line
		@@ -8,15 +8,6 @@
		// TODO: consider inlining into res_state
		struct res_state_ext {
		sockaddr_union nsaddrs[MAXNS];
		struct sort_list {
		int af;
		union {
		struct in_addr ina;
		struct in6_addr in6a;
		} addr, mask;
		} sort_list[MAXRESOLVSORT];
		char nsuffix[64];
		char nsuffix2[64];
		};

		#endif // NETD_RES_STATE_EXT_H

resolv_private.h

+0 −10

Original line number	Diff line number	Diff line
		@@ -79,7 +79,6 @@
		* Global defines and variables for resolver stub.
		*/
		#define RES_TIMEOUT 5000 /* min. milliseconds between retries */
		#define MAXRESOLVSORT 10 /* number of net to sort on */
		#define RES_MAXNDOTS 15 /* should reflect bit field size */
		#define RES_DFLRETRY 2 /* Default #/tries. */
		#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
		@@ -95,19 +94,10 @@ struct __res_state {
		uint16_t id; // current message id
		std::vector<std::string> search_domains; // domains to search
		unsigned ndots : 4; // threshold for initial abs. query
		unsigned nsort : 4; // number of elements in sort_list[]
		char unused[3];
		struct {
		struct in_addr addr;
		uint32_t mask;
		} sort_list[MAXRESOLVSORT];
		unsigned _mark; /* If non-0 SET_MARK to _mark on all request sockets */
		int _vcsock; /* PRIVATE: for res_send VC i/o */
		uint32_t _flags; /* PRIVATE: see below */
		uint32_t _pad; /* make _u 64 bit aligned */
		union {
		/* On an 32-bit arch this means 512b total. */
		char pad[72 - 4 * sizeof(int) - 2 * sizeof(void*)];
		struct {
		uint16_t nscount;
		uint16_t nstimes[MAXNS]; /* ms. */