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Diffstat (limited to 'sysdeps/posix/getaddrinfo.c')
-rw-r--r--sysdeps/posix/getaddrinfo.c913
1 files changed, 423 insertions, 490 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index fb9709fee7..fec30f97d7 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -44,92 +44,98 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
/* getaddrinfo() v1.13 */
-/* To do what POSIX says, even when it's broken: */
-#define BROKEN_LIKE_POSIX 1
-#define LOCAL 1
-#define INET6 1
-#define HOSTTABLE 0
-#define RESOLVER 1
-
#include <sys/types.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
-#if LOCAL
#include <stdio.h>
#include <string.h>
#include <sys/utsname.h>
#include <sys/un.h>
-#endif /* LOCAL */
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include <arpa/inet.h>
-#ifndef AF_LOCAL
-#define AF_LOCAL AF_UNIX
-#endif /* AF_LOCAL */
-#ifndef PF_LOCAL
-#define PF_LOCAL PF_UNIX
-#endif /* PF_LOCAL */
-#ifndef UNIX_PATH_MAX
-#define UNIX_PATH_MAX 108
-#endif /* UNIX_PATH_MAX */
-
#define GAIH_OKIFUNSPEC 0x0100
#define GAIH_EAI ~(GAIH_OKIFUNSPEC)
-#if HOSTTABLE
-struct hostent *_hostname2addr_hosts(const char *name, int);
-struct hostent *_addr2hostname_hosts(const char *name, int, int);
-#endif /* HOSTTABLE */
+#ifndef UNIX_PATH_MAX
+#define UNIX_PATH_MAX 108
+#endif
-static struct addrinfo nullreq =
-{ 0, PF_UNSPEC, 0, 0, 0, NULL, NULL, NULL };
+struct gaih_service
+ {
+ const char *name;
+ int num;
+ };
-struct gaih_service {
- char *name;
- int num;
-};
+struct gaih_servtuple
+ {
+ struct gaih_servtuple *next;
+ int socktype;
+ int protocol;
+ int port;
+ };
-struct gaih_servtuple {
- struct gaih_servtuple *next;
- int socktype;
- int protocol;
- int port;
-};
+static struct gaih_servtuple nullserv = { NULL, 0, 0, 0 };
-static struct gaih_servtuple nullserv = {
- NULL, 0, 0, 0
-};
+struct gaih_addrtuple
+ {
+ struct gaih_addrtuple *next;
+ int family;
+ char addr[16];
+ };
-struct gaih_addrtuple {
- struct gaih_addrtuple *next;
- int family;
- char addr[16];
-};
+struct gaih_typeproto
+ {
+ int socktype;
+ int protocol;
+ char *name;
+ };
-struct gaih_typeproto {
- int socktype;
- int protocol;
- char *name;
+static struct gaih_typeproto gaih_inet_typeproto[] =
+{
+ { 0, 0, NULL },
+ { SOCK_STREAM, IPPROTO_TCP, (char *) "tcp" },
+ { SOCK_DGRAM, IPPROTO_UDP, (char *) "udp" },
+ { 0, 0, NULL }
};
-#if LOCAL
-static int gaih_local(const char *name, const struct gaih_service *service,
- const struct addrinfo *req, struct addrinfo **pai)
+struct gaih
+ {
+ int family;
+ int (*gaih)(const char *name, const struct gaih_service *service,
+ const struct addrinfo *req, struct addrinfo **pai);
+ };
+
+static struct addrinfo default_hints =
+ { 0, PF_UNSPEC, 0, 0, 0, NULL, NULL, NULL };
+
+
+static int
+gaih_local (const char *name, const struct gaih_service *service,
+ const struct addrinfo *req, struct addrinfo **pai)
{
struct utsname utsname;
- if (name || (req->ai_flags & AI_CANONNAME))
+ if ((name != NULL) || (req->ai_flags & AI_CANONNAME))
if (uname(&utsname))
return -EAI_SYSTEM;
- if (name) {
- if (strcmp(name, "localhost") && strcmp(name, "local") && strcmp(name, "unix") && strcmp(name, utsname.nodename))
- return (GAIH_OKIFUNSPEC | -EAI_NONAME);
- };
- if (!(*pai = malloc(sizeof(struct addrinfo) + sizeof(struct sockaddr_un) + ((req->ai_flags & AI_CANONNAME) ? (strlen(utsname.nodename) + 1): 0))))
+ if (name != NULL)
+ {
+ if (strcmp(name, "localhost") &&
+ strcmp(name, "local") &&
+ strcmp(name, "unix") &&
+ strcmp(name, utsname.nodename))
+ return GAIH_OKIFUNSPEC | -EAI_NONAME;
+ }
+
+ *pai = malloc (sizeof(struct addrinfo) + sizeof(struct sockaddr_un)
+ + ((req->ai_flags & AI_CANONNAME)
+ ? (strlen(utsname.nodename) + 1): 0));
+ if (*pai == NULL)
return -EAI_MEMORY;
(*pai)->ai_next = NULL;
@@ -139,63 +145,79 @@ static int gaih_local(const char *name, const struct gaih_service *service,
(*pai)->ai_protocol = req->ai_protocol;
(*pai)->ai_addrlen = sizeof(struct sockaddr_un);
(*pai)->ai_addr = (void *)(*pai) + sizeof(struct addrinfo);
+
#if SALEN
- ((struct sockaddr_un *)(*pai)->ai_addr)->sun_len = sizeof(struct sockaddr_un);
+ ((struct sockaddr_un *) (*pai)->ai_addr)->sun_len =
+ sizeof (struct sockaddr_un);
#endif /* SALEN */
+
((struct sockaddr_un *)(*pai)->ai_addr)->sun_family = AF_LOCAL;
memset(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path, 0, UNIX_PATH_MAX);
- if (service) {
- char *c;
- if (c = strchr(service->name, '/')) {
- if (strlen(service->name) >= sizeof(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path))
- return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
- strcpy(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path, service->name);
- } else {
- if (strlen(P_tmpdir "/") + 1 + strlen(service->name) >= sizeof(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path))
- return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
- strcpy(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path, P_tmpdir "/");
- strcat(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path, service->name);
- };
- } else {
- if (!tmpnam(((struct sockaddr_un *)(*pai)->ai_addr)->sun_path))
- return -EAI_SYSTEM;
- };
+
+ if (service)
+ {
+ struct sockaddr_un *sunp = (struct sockaddr_un *) (*pai)->ai_addr;
+
+ if (strchr (service->name, '/') != NULL)
+ {
+ if (strlen (service->name) >= sizeof (sunp->sun_path))
+ return GAIH_OKIFUNSPEC | -EAI_SERVICE;
+
+ strcpy (sunp->sun_path, service->name);
+ }
+ else
+ {
+ if (strlen (P_tmpdir "/") + 1 + strlen (service->name) >=
+ sizeof (sunp->sun_path))
+ return GAIH_OKIFUNSPEC | -EAI_SERVICE;
+
+ __stpcpy (__stpcpy (sunp->sun_path, P_tmpdir "/"), service->name);
+ }
+ }
+ else
+ {
+ if (tmpnam (((struct sockaddr_un *) (*pai)->ai_addr)->sun_path) == NULL)
+ return -EAI_SYSTEM;
+ }
+
if (req->ai_flags & AI_CANONNAME)
- strcpy((*pai)->ai_canonname = (char *)(*pai) + sizeof(struct addrinfo) + sizeof(struct sockaddr_un), utsname.nodename);
+ strcpy ((*pai)->ai_canonname = (char *)(*pai) + sizeof(struct addrinfo) +
+ sizeof(struct sockaddr_un), utsname.nodename);
else
(*pai)->ai_canonname = NULL;
return 0;
-};
-#endif /* LOCAL */
-
-static struct gaih_typeproto gaih_inet_typeproto[] =
-{
- { 0, 0, NULL },
- { SOCK_STREAM, IPPROTO_TCP, (char *) "tcp" },
- { SOCK_DGRAM, IPPROTO_UDP, (char *) "udp" },
- { 0, 0, NULL }
-};
+}
-static int gaih_inet_serv(char *servicename, struct gaih_typeproto *tp, struct gaih_servtuple **st)
+static int
+gaih_inet_serv (const char *servicename, struct gaih_typeproto *tp,
+ struct gaih_servtuple **st)
{
struct servent *s;
- int tmpbuflen = 1024;
+ size_t tmpbuflen = 1024;
struct servent ts;
- char *tmpbuf = __alloca (tmpbuflen);
- while (__getservbyname_r (servicename, tp->name, &ts, tmpbuf, tmpbuflen, &s))
+ char *tmpbuf;
+ int r;
+
+ do
{
- if (errno == ERANGE)
- {
- tmpbuflen *= 2;
- tmpbuf = __alloca (tmpbuflen);
- }
- else
+ tmpbuf = __alloca (tmpbuflen);
+ if (tmpbuf == NULL)
+ return -EAI_MEMORY;
+
+ r = __getservbyname_r (servicename, tp->name, &ts, tmpbuf, tmpbuflen,
+ &s);
+ if (r)
{
- return GAIH_OKIFUNSPEC | -EAI_SERVICE;
+ if (errno == ERANGE)
+ tmpbuflen *= 2;
+ else
+ return GAIH_OKIFUNSPEC | -EAI_SERVICE;
}
}
+ while (r);
- if (!(*st = malloc (sizeof (struct gaih_servtuple))))
+ *st = malloc (sizeof (struct gaih_servtuple));
+ if (*st == NULL)
return -EAI_MEMORY;
(*st)->next = NULL;
@@ -206,426 +228,330 @@ static int gaih_inet_serv(char *servicename, struct gaih_typeproto *tp, struct g
return 0;
}
-static int gaih_inet(const char *name, const struct gaih_service *service,
- const struct addrinfo *req, struct addrinfo **pai)
+#define gethosts(_family, _type) \
+ { \
+ int i, herrno; \
+ size_t tmpbuflen; \
+ struct hostent th; \
+ char *tmpbuf; \
+ tmpbuflen = 512; \
+ do { \
+ tmpbuflen *= 2; \
+ tmpbuf = __alloca (tmpbuflen); \
+ if (tmpbuf == NULL) \
+ return -EAI_MEMORY; \
+ rc = __gethostbyname2_r (name, _family, &th, tmpbuf, \
+ tmpbuflen, &h, &herrno); \
+ } while ((rc != 0) && \
+ (herrno == NETDB_INTERNAL) && (errno == ERANGE)); \
+ if ((rc != 0) && (herrno == NETDB_INTERNAL)) \
+ { \
+ __set_h_errno (herrno); \
+ return -EAI_SYSTEM; \
+ } \
+ if (h != NULL) \
+ { \
+ for (i = 0; h->h_addr_list[i]; i++) \
+ { \
+ if (*pat == NULL) \
+ { \
+ *pat = __alloca (sizeof(struct gaih_addrtuple)); \
+ if (*pat == NULL) \
+ return -EAI_MEMORY; \
+ } \
+ (*pat)->next = NULL; \
+ (*pat)->family = _family; \
+ memcpy ((*pat)->addr, h->h_addr_list[i], \
+ sizeof(_type)); \
+ pat = &((*pat)->next); \
+ } \
+ } \
+ }
+
+static int
+gaih_inet (const char *name, const struct gaih_service *service,
+ const struct addrinfo *req, struct addrinfo **pai)
{
struct gaih_typeproto *tp = gaih_inet_typeproto;
struct gaih_servtuple *st = &nullserv;
struct gaih_addrtuple *at = NULL;
- int i;
-
- if (req->ai_protocol || req->ai_socktype) {
- for (tp++; tp->name &&
- ((req->ai_socktype != tp->socktype) || !req->ai_socktype) &&
- ((req->ai_protocol != tp->protocol) || !req->ai_protocol); tp++);
- if (!tp->name)
- if (req->ai_socktype)
- return (GAIH_OKIFUNSPEC | -EAI_SOCKTYPE);
- else
- return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
- }
+ int rc;
- if (service) {
- if (service->num < 0) {
- if (tp->name) {
- if (i = gaih_inet_serv(service->name, tp, &st))
- return i;
- } else {
- struct gaih_servtuple **pst = &st;
- for (tp++; tp->name; tp++) {
- if (i = gaih_inet_serv(service->name, tp, pst)) {
- if (i & GAIH_OKIFUNSPEC)
- continue;
- goto ret;
- }
- pst = &((*pst)->next);
+ if (req->ai_protocol || req->ai_socktype)
+ {
+ for (tp++; tp->name &&
+ ((req->ai_socktype != tp->socktype) || !req->ai_socktype) &&
+ ((req->ai_protocol != tp->protocol) || !req->ai_protocol); tp++);
+ if (tp->name == NULL)
+ if (req->ai_socktype)
+ return (GAIH_OKIFUNSPEC | -EAI_SOCKTYPE);
+ else
+ return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
+ }
+
+ if (service != NULL)
+ {
+ if (service->num < 0)
+ {
+ if (tp->name != NULL)
+ {
+ if (rc = gaih_inet_serv (service->name, tp, &st))
+ return rc;
+ }
+ else
+ {
+ struct gaih_servtuple **pst = &st;
+ for (tp++; tp->name; tp++)
+ {
+ if (rc = gaih_inet_serv (service->name, tp, pst))
+ {
+ if (rc & GAIH_OKIFUNSPEC)
+ continue;
+ return rc;
+ }
+ pst = &((*pst)->next);
+ }
+ if (st == &nullserv)
+ return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
+ }
}
- if (st == &nullserv) {
- i = (GAIH_OKIFUNSPEC | -EAI_SERVICE);
- goto ret;
+ else
+ {
+ st = __alloca (sizeof(struct gaih_servtuple));
+ if (st == NULL)
+ return -EAI_MEMORY;
+
+ st->next = NULL;
+ st->socktype = tp->socktype;
+ st->protocol = tp->protocol;
+ st->port = htons (service->num);
}
- }
- } else {
- if (!(st = malloc(sizeof(struct gaih_servtuple))))
+ }
+
+ if (name != NULL)
+ {
+ at = __alloca (sizeof(struct gaih_addrtuple));
+ if (at == NULL)
return -EAI_MEMORY;
- st->next = NULL;
- st->socktype = tp->socktype;
- st->protocol = tp->protocol;
- st->port = htons(service->num);
- }
- }
+ at->family = 0;
+ at->next = NULL;
- if (name) {
- if (!(at = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- }
+ if (at->family || !req->ai_family || (req->ai_family == AF_INET))
+ if (inet_pton (AF_INET, name, at->addr) > 0)
+ at->family = AF_INET;
- at->family = 0;
- at->next = NULL;
-
- if (!at->family || !req->ai_family || (req->ai_family == AF_INET))
- if (inet_pton(AF_INET, name, at->addr) > 0)
- at->family = AF_INET;
-
-#if INET6
- if (!at->family && (!req->ai_family || (req->ai_family == AF_INET6)))
- if (inet_pton(AF_INET6, name, at->addr) > 0)
- at->family = AF_INET6;
-#endif /* INET6 */
-
-#if HOSTTABLE
- if (!at->family) {
- struct hostent *h;
- struct gaih_addrtuple **pat = &at;
-
-#if INET6
- if (!req->ai_family || (req->ai_family == AF_INET6))
- if (h = _hostname2addr_hosts(name, AF_INET6)) {
- for (i = 0; h->h_addr_list[i]; i++) {
- if (!*pat) {
- if (!(*pat = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- }
- }
- (*pat)->next = NULL;
- (*pat)->family = AF_INET6;
- memcpy((*pat)->addr, h->h_addr_list[i], sizeof(struct in6_addr));
- pat = &((*pat)->next);
- }
- }
-#endif /* INET6 */
-
- if (!req->ai_family || (req->ai_family == AF_INET))
- if (h = _hostname2addr_hosts(name, AF_INET)) {
- for (i = 0; h->h_addr_list[i]; i++) {
- if (!*pat) {
- if (!(*pat = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- }
- }
- (*pat)->next = NULL;
- (*pat)->family = AF_INET;
- memcpy((*pat)->addr, h->h_addr_list[i], sizeof(struct in_addr));
- pat = &((*pat)->next);
- }
+ if (!at->family && (!req->ai_family || (req->ai_family == AF_INET6)))
+ if (inet_pton (AF_INET6, name, at->addr) > 0)
+ at->family = AF_INET6;
+
+ if (at->family == AF_UNSPEC)
+ {
+ struct hostent *h;
+ struct gaih_addrtuple **pat = &at;
+
+ if ((req->ai_family == AF_UNSPEC) || (req->ai_family == AF_INET6))
+ gethosts (AF_INET6, struct in6_addr);
+
+ if ((req->ai_family == AF_UNSPEC) || (req->ai_family == AF_INET))
+ gethosts (AF_INET, struct in_addr);
}
+
+ if (at->family == AF_UNSPEC)
+ return (GAIH_OKIFUNSPEC | -EAI_NONAME);
+
}
-#endif /* HOSTTABLE */
-
-#if RESOLVER
- if (!at->family) {
- struct hostent *h;
- struct gaih_addrtuple **pat = &at;
-
-#if INET6
- if (!req->ai_family || (req->ai_family == AF_INET6)) {
- int herrno;
- int tmpbuflen = 1024;
- struct hostent th;
- char *tmpbuf = __alloca(tmpbuflen);
- while (__gethostbyname2_r(name, AF_INET6, &th, tmpbuf, tmpbuflen,
- &h, &herrno)) {
- if (herrno == NETDB_INTERNAL) {
- if (errno == ERANGE) {
- /* Need more buffer */
- tmpbuflen *= 2;
- tmpbuf = __alloca(tmpbuflen);
- } else {
- /* Bail out */
- __set_h_errno(herrno);
- i = -EAI_SYSTEM;
- goto ret;
- }
- } else {
- break;
- }
- }
- if (h) {
- for (i = 0; h->h_addr_list[i]; i++) {
- if (!*pat) {
- if (!(*pat = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- }
- }
- (*pat)->next = NULL;
- (*pat)->family = AF_INET6;
- memcpy((*pat)->addr, h->h_addr_list[i], sizeof(struct in6_addr));
- pat = &((*pat)->next);
- }
- }
- }
-#endif /* INET6 */
-
- if (!req->ai_family || (req->ai_family == AF_INET)) {
- int herrno;
- struct hostent th;
- int tmpbuflen = 1024;
- char *tmpbuf = __alloca(tmpbuflen);
- while (__gethostbyname2_r(name, AF_INET, &th, tmpbuf, tmpbuflen,
- &h, &herrno)) {
- if (herrno == NETDB_INTERNAL) {
- if (errno == ERANGE) {
- /* Need more buffer */
- tmpbuflen *= 2;
- tmpbuf = __alloca(tmpbuflen);
- } else {
- /* Bail out */
- __set_h_errno(herrno);
- i = -EAI_SYSTEM;
- goto ret;
- }
- } else {
- break;
- }
- }
- if (h) {
- for (i = 0; h->h_addr_list[i]; i++) {
- if (!*pat) {
- if (!(*pat = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- }
- }
- (*pat)->next = NULL;
- (*pat)->family = AF_INET;
- memcpy((*pat)->addr, h->h_addr_list[i], sizeof(struct in_addr));
- pat = &((*pat)->next);
- }
- }
- }
+ else
+ {
+ at = __alloca (sizeof(struct gaih_addrtuple));
+ if (at == NULL)
+ return -EAI_MEMORY;
+
+ memset (at, 0, sizeof(struct gaih_addrtuple));
+
+ at->next = __alloca (sizeof(struct gaih_addrtuple));
+ if (at->next == NULL)
+ return -EAI_MEMORY;
+
+ at->family = AF_INET6;
+
+ memset (at->next, 0, sizeof(struct gaih_addrtuple));
+ at->next->family = AF_INET;
}
-#endif /* RESOLVER */
-
- if (!at->family)
- return (GAIH_OKIFUNSPEC | -EAI_NONAME);
- } else {
- if (!(at = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- };
-
- memset(at, 0, sizeof(struct gaih_addrtuple));
-
-#if INET6
- if (!(at->next = malloc(sizeof(struct gaih_addrtuple)))) {
- i = -EAI_MEMORY;
- goto ret;
- };
-
- at->family = AF_INET6;
-
- memset(at->next, 0, sizeof(struct gaih_addrtuple));
- at->next->family = AF_INET;
-#else /* INET6 */
- at->family = AF_INET;
-#endif /* INET6 */
- };
- if (!pai) {
- i = 0;
- goto ret;
- };
+ if (pai == NULL)
+ return 0;
{
const char *c = NULL;
struct gaih_servtuple *st2;
struct gaih_addrtuple *at2 = at;
- int j;
+ size_t socklen, namelen;
+
/*
buffer is the size of an unformatted IPv6 address in printable format.
*/
char buffer[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
- while(at2) {
- if (req->ai_flags & AI_CANONNAME) {
- struct hostent *h = NULL;
-
-#if RESOLVER
- int herrno;
- struct hostent th;
- int tmpbuflen = 1024;
- char *tmpbuf = __alloca(tmpbuflen);
- while (__gethostbyaddr_r(at2->addr,
-#if INET6
- (at2->family == AF_INET6) ? sizeof(struct in6_addr) :
-#endif /* INET6 */
- sizeof(struct in_addr), at2->family,
- &th, tmpbuf, tmpbuflen, &h, &herrno)) {
- if (herrno == NETDB_INTERNAL) {
- if (errno == ERANGE) {
- /* Need more buffer */
- tmpbuflen *= 2;
- tmpbuf = __alloca(tmpbuflen);
- } else {
- /* Bail out */
- __set_h_errno(herrno);
- i = -EAI_SYSTEM;
- goto ret;
- }
- } else {
- break;
- }
- }
-#endif /* RESOLVER */
-#if HOSTTABLE
- if (!h)
- h = _addr2hostname_hosts(at2->addr,
-#if INET6
- (at2->family == AF_INET6) ? sizeof(struct in6_addr) :
-#endif /* INET6 */
- sizeof(struct in_addr), at2->family);
-#endif /* HOSTTABLE */
-
- if (!h)
- c = inet_ntop(at2->family, at2->addr, buffer, sizeof(buffer));
- else
- c = h->h_name;
+ while (at2 != NULL)
+ {
+ if (req->ai_flags & AI_CANONNAME)
+ {
+ struct hostent *h = NULL;
- if (!c) {
- i = (GAIH_OKIFUNSPEC | -EAI_NONAME);
- goto ret;
- }
+ int herrno;
+ struct hostent th;
+ size_t tmpbuflen = 512;
+ char *tmpbuf;
- j = strlen(c) + 1;
- } else
- j = 0;
+ do
+ {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca (tmpbuflen);
-#if INET6
- if (at2->family == AF_INET6)
- i = sizeof(struct sockaddr_in6);
- else
-#endif /* INET6 */
- i = sizeof(struct sockaddr_in);
-
- st2 = st;
- while(st2) {
- if (!(*pai = malloc(sizeof(struct addrinfo) + i + j))) {
- i = -EAI_MEMORY;
- goto ret;
- }
- (*pai)->ai_flags = req->ai_flags;
- (*pai)->ai_family = at2->family;
- (*pai)->ai_socktype = st2->socktype;
- (*pai)->ai_protocol = st2->protocol;
- (*pai)->ai_addrlen = i;
- (*pai)->ai_addr = (void *)(*pai) + sizeof(struct addrinfo);
+ if (tmpbuf == NULL)
+ return -EAI_MEMORY;
+
+ rc = __gethostbyaddr_r (at2->addr,
+ ((at2->family == AF_INET6)
+ ? sizeof(struct in6_addr)
+ : sizeof(struct in_addr)),
+ at2->family, &th, tmpbuf, tmpbuflen,
+ &h, &herrno);
+
+ }
+ while ((rc != 0) && (herrno == NETDB_INTERNAL)
+ && (errno == ERANGE));
+
+ if ((rc != 0) && (herrno == NETDB_INTERNAL))
+ {
+ __set_h_errno (herrno);
+ return -EAI_SYSTEM;
+ }
+
+ if (h == NULL)
+ c = inet_ntop (at2->family, at2->addr, buffer, sizeof(buffer));
+ else
+ c = h->h_name;
+
+ if (c == NULL)
+ return GAIH_OKIFUNSPEC | -EAI_NONAME;
+
+ namelen = strlen (c) + 1;
+ }
+ else
+ namelen = 0;
+
+ if (at2->family == AF_INET6)
+ socklen = sizeof (struct sockaddr_in6);
+ else
+ socklen = sizeof (struct sockaddr_in);
+
+ for (st2 = st; st2 != NULL; st2 = st2->next)
+ {
+ *pai = malloc (sizeof (struct addrinfo) + socklen + namelen);
+ if (*pai == NULL)
+ return -EAI_MEMORY;
+
+ (*pai)->ai_flags = req->ai_flags;
+ (*pai)->ai_family = at2->family;
+ (*pai)->ai_socktype = st2->socktype;
+ (*pai)->ai_protocol = st2->protocol;
+ (*pai)->ai_addrlen = socklen;
+ (*pai)->ai_addr = (void *) (*pai) + sizeof(struct addrinfo);
#if SALEN
- ((struct sockaddr_in *)(*pai)->ai_addr)->sin_len = i;
+ ((struct sockaddr_in *) (*pai)->ai_addr)->sin_len = i;
#endif /* SALEN */
- ((struct sockaddr_in *)(*pai)->ai_addr)->sin_family = at2->family;
- ((struct sockaddr_in *)(*pai)->ai_addr)->sin_port = st2->port;
-
-#if INET6
- if (at2->family == AF_INET6) {
- ((struct sockaddr_in6 *)(*pai)->ai_addr)->sin6_flowinfo = 0;
- memcpy(&((struct sockaddr_in6 *)(*pai)->ai_addr)->sin6_addr, at2->addr, sizeof(struct in6_addr));
- } else
-#endif /* INET6 */
- {
- memcpy(&((struct sockaddr_in *)(*pai)->ai_addr)->sin_addr, at2->addr, sizeof(struct in_addr));
- memset(((struct sockaddr_in *)(*pai)->ai_addr)->sin_zero, 0, sizeof(((struct sockaddr_in *)(*pai)->ai_addr)->sin_zero));
- }
+ ((struct sockaddr_in *) (*pai)->ai_addr)->sin_family = at2->family;
+ ((struct sockaddr_in *) (*pai)->ai_addr)->sin_port = st2->port;
- if (c) {
- (*pai)->ai_canonname = (void *)(*pai) + sizeof(struct addrinfo) + i;
- strcpy((*pai)->ai_canonname, c);
- } else
- (*pai)->ai_canonname = NULL;
- (*pai)->ai_next = NULL;
+ if (at2->family == AF_INET6)
+ {
+ struct sockaddr_in6 *sin6p =
+ (struct sockaddr_in6 *) (*pai)->ai_addr;
- pai = &((*pai)->ai_next);
+ sin6p->sin6_flowinfo = 0;
+ memcpy (&sin6p->sin6_addr,
+ at2->addr, sizeof (struct in6_addr));
+ }
+ else
+ {
+ struct sockaddr_in *sinp =
+ (struct sockaddr_in *) (*pai)->ai_addr;
+ memcpy (&sinp->sin_addr,
+ at2->addr, sizeof (struct in_addr));
+ memset (sinp->sin_zero, '\0', sizeof (sinp->sin_zero));
+ }
- st2 = st2->next;
- }
- at2 = at2->next;
- }
- }
+ if (c)
+ {
+ (*pai)->ai_canonname = ((void *) (*pai) +
+ sizeof (struct addrinfo) + socklen);
+ strcpy ((*pai)->ai_canonname, c);
+ }
+ else
+ (*pai)->ai_canonname = NULL;
- i = 0;
+ (*pai)->ai_next = NULL;
+ pai = &((*pai)->ai_next);
+ }
-ret:
- if (st != &nullserv) {
- struct gaih_servtuple *st2 = st;
- while(st) {
- st2 = st->next;
- free(st);
- st = st2;
- }
- }
- if (at) {
- struct gaih_addrtuple *at2 = at;
- while(at) {
- at2 = at->next;
- free(at);
- at = at2;
- }
+ at2 = at2->next;
+ }
}
- return i;
+ return 0;
}
-struct gaih {
- int family;
- int (*gaih)(const char *name, const struct gaih_service *service,
- const struct addrinfo *req, struct addrinfo **pai);
-};
-
-static struct gaih gaih[] = {
-#if INET6
- { PF_INET6, gaih_inet },
-#endif /* INET6 */
- { PF_INET, gaih_inet },
-#if LOCAL
- { PF_LOCAL, gaih_local },
-#endif /* LOCAL */
- { PF_UNSPEC, NULL }
-};
+static struct gaih gaih[] =
+ {
+ { PF_INET6, gaih_inet },
+ { PF_INET, gaih_inet },
+ { PF_LOCAL, gaih_local },
+ { PF_UNSPEC, NULL }
+ };
-int getaddrinfo(const char *name, const char *service,
- const struct addrinfo *req, struct addrinfo **pai)
+int
+getaddrinfo (const char *name, const char *service,
+ const struct addrinfo *hints, struct addrinfo **pai)
{
int i = 0, j = 0;
struct addrinfo *p = NULL, **end;
struct gaih *g = gaih, *pg = NULL;
struct gaih_service gaih_service, *pservice;
- if (name && (name[0] == '*') && !name[1])
+ if (name != NULL && name[0] == '*' && name[1] == 0)
name = NULL;
- if (service && (service[0] == '*') && !service[1])
+ if (service != NULL && service[0] == '*' && service[1] == 0)
service = NULL;
-#if BROKEN_LIKE_POSIX
- if (!name && !service)
+ if (name == NULL && service == NULL)
return EAI_NONAME;
-#endif /* BROKEN_LIKE_POSIX */
- if (!req)
- req = &nullreq;
+ if (hints == NULL)
+ hints = &default_hints;
- if (req->ai_flags & ~3)
+ if (hints->ai_flags & ~3)
return EAI_BADFLAGS;
- if ((req->ai_flags & AI_CANONNAME) && !name)
+ if ((hints->ai_flags & AI_CANONNAME) && name == NULL)
return EAI_BADFLAGS;
- if (service && *service) {
- char *c;
- gaih_service.num = strtoul(gaih_service.name = (void *)service, &c, 10);
- if (*c) {
- gaih_service.num = -1;
- }
-#if BROKEN_LIKE_POSIX
+ if (service && service[0])
+ {
+ char *c;
+ gaih_service.name = service;
+ gaih_service.num = strtoul (gaih_service.name, &c, 10);
+ if (*c)
+ gaih_service.num = -1;
else
- if (!req->ai_socktype)
+ /* Can't specify a numerical socket unless a protocol family was
+ given. */
+ if (hints->ai_socktype == 0)
return EAI_SERVICE;
-#endif /* BROKEN_LIKE_POSIX */
- pservice = &gaih_service;
- } else
+ pservice = &gaih_service;
+ }
+ else
pservice = NULL;
if (pai)
@@ -633,51 +559,58 @@ int getaddrinfo(const char *name, const char *service,
else
end = NULL;
- while(g->gaih) {
- if ((req->ai_family == g->family) || !req->ai_family) {
- j++;
- if (!((pg && (pg->gaih == g->gaih)))) {
- pg = g;
- if (i = g->gaih(name, pservice, req, end)) {
- if (!req->ai_family && (i & GAIH_OKIFUNSPEC))
- continue;
- goto gaih_err;
+ while (g->gaih)
+ {
+ if ((hints->ai_family == g->family) || (hints->ai_family == AF_UNSPEC))
+ {
+ j++;
+ if ((pg == NULL) || (pg->gaih != g->gaih))
+ {
+ pg = g;
+ if (i = g->gaih (name, pservice, hints, end))
+ {
+ if ((hints->ai_family == AF_UNSPEC) && (i & GAIH_OKIFUNSPEC))
+ continue;
+
+ if (p)
+ freeaddrinfo (p);
+
+ return (i)?-(i & GAIH_EAI):EAI_NONAME;
+ }
+ if (end)
+ while(*end) end = &((*end)->ai_next);
+ }
}
- if (end)
- while(*end) end = &((*end)->ai_next);
- }
+ ++g;
}
- g++;
- }
- if (!j)
+ if (j == 0)
return EAI_FAMILY;
- if (p) {
- *pai = p;
- return 0;
- }
+ if (p)
+ {
+ *pai = p;
+ return 0;
+ }
- if (!pai && !i)
+ if (pai == NULL && i == 0)
return 0;
-gaih_err:
if (p)
- freeaddrinfo(p);
-
- if (i)
- return -(i & GAIH_EAI);
+ freeaddrinfo (p);
- return EAI_NONAME;
+ return i ? -(i & GAIH_EAI) : EAI_NONAME;
}
-void freeaddrinfo(struct addrinfo *ai)
+void
+freeaddrinfo (struct addrinfo *ai)
{
struct addrinfo *p;
- while(ai) {
- p = ai;
- ai = ai->ai_next;
- free((void *)p);
- }
+ while (ai != NULL)
+ {
+ p = ai;
+ ai = ai->ai_next;
+ free (p);
+ }
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-27 23:20:51 +0000