diff options
Diffstat (limited to 'inet/getnameinfo.c')
| -rw-r--r-- | inet/getnameinfo.c | 79 |
1 files changed, 25 insertions, 54 deletions
diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c index f090f0b..2bba606 100644 --- a/inet/getnameinfo.c +++ b/inet/getnameinfo.c @@ -42,19 +42,12 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. /* This software is Copyright 1996 by Craig Metz, All Rights Reserved. */ -#define INET6 1 -#define LOCAL 1 -#define HOSTTABLE 0 -#define RESOLVER 1 - #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> -#if LOCAL #include <sys/un.h> #include <sys/utsname.h> -#endif /* LOCAL */ #include <netdb.h> #include <errno.h> #include <string.h> @@ -64,20 +57,12 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include <bits/libc-lock.h> #include <arpa/inet.h> -#ifndef AF_LOCAL -# define AF_LOCAL AF_UNIX -#endif /* AF_LOCAL */ - -#if HOSTTABLE -struct hostent *_addr2hostname_hosts (const char *, int, int); -#endif /* HOSTTABLE */ - #ifndef min # define min(x,y) (((x) > (y)) ? (y) : (x)) #endif /* min */ -static const char * +static char * nrl_domainname (void) { static char *domain = NULL; @@ -92,7 +77,7 @@ nrl_domainname (void) { char *c; struct hostent *h, th; - int tmpbuflen = 1024; + size_t tmpbuflen = 1024; char *tmpbuf = alloca (tmpbuflen); int herror; @@ -194,27 +179,12 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, switch(sa->sa_family) { case AF_INET: -#if INET6 case AF_INET6: -#endif /* INET6 */ if (!(flags & NI_NUMERICHOST)) { struct hostent *h = NULL; -#if HOSTTABLE -# if INET6 - if (sa->sa_family == AF_INET6) - h = _addr2hostname_hosts ((void *) &(((struct sockaddr_in6 *) sa)->sin6_addr), - sizeof(struct in6_addr), AF_INET6); - else -# endif /* INET6 */ - h = _addr2hostname_hosts ((void *)& (((struct sockaddr_in *) sa)->sin_addr), - sizeof(struct in_addr), AF_INET); -#endif /* HOSTTABLE */ - -#if RESOLVER if (h == NULL) { -#if INET6 if (sa->sa_family == AF_INET6) { while (__gethostbyaddr_r ((void *) &(((struct sockaddr_in6 *) sa)->sin6_addr), @@ -232,7 +202,8 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, else { __set_h_errno (herrno); - goto fail; + __set_errno (serrno); + return -1; } } else @@ -243,7 +214,6 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, } else { -#endif /* INET6 */ while (__gethostbyaddr_r ((void *) &(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET, &th, tmpbuf, tmpbuflen, @@ -261,13 +231,12 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, } } } -#endif /* RESOLVER */ if (h) { if (flags & NI_NOFQDN) { - const char *c; + char *c; if ((c = nrl_domainname ()) && (c = strstr(h->h_name, c)) && (c != h->h_name) && (*(--c) == '.')) { @@ -282,7 +251,10 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, } if (flags & NI_NAMEREQD) - goto fail; + { + __set_errno (serrno); + return -1; + } else { const char *c; @@ -297,12 +269,14 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, (void *) &(((struct sockaddr_in *) sa)->sin_addr), host, hostlen); - if (!c) - goto fail; + if (c == NULL) + { + __set_errno (serrno); + return -1; + } } break; -#if LOCAL case AF_LOCAL: if (!(flags & NI_NUMERICHOST)) { @@ -316,11 +290,13 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, }; if (flags & NI_NAMEREQD) - goto fail; + { + __set_errno (serrno); + return -1; + } strncpy (host, "localhost", hostlen); break; -#endif /* LOCAL */ default: return -1; @@ -330,9 +306,7 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, switch(sa->sa_family) { case AF_INET: -#if INET6 case AF_INET6: -#endif /* INET6 */ if (!(flags & NI_NUMERICSERV)) { struct servent *s, ts; @@ -345,10 +319,13 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, if (errno == ERANGE) { tmpbuflen *= 2; - tmpbuf = __alloca(tmpbuflen); + tmpbuf = __alloca (tmpbuflen); } else - goto fail; + { + __set_errno (serrno); + return -1; + } } else { @@ -357,7 +334,7 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, } if (s) { - strncpy(serv, s->s_name, servlen); + strncpy (serv, s->s_name, servlen); break; } } @@ -365,11 +342,9 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, ntohs (((struct sockaddr_in *) sa)->sin_port)); break; -#if LOCAL case AF_LOCAL: strncpy (serv, ((struct sockaddr_un *) sa)->sun_path, servlen); break; -#endif /* LOCAL */ } if (host && (hostlen > 0)) @@ -378,8 +353,4 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, serv[servlen-1] = 0; errno = serrno; return 0; - -fail: - errno = serrno; - return -1; -}; +} |