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authorUlrich Drepper <drepper@redhat.com>1997-02-22 01:20:46 +0000
committerUlrich Drepper <drepper@redhat.com>1997-02-22 01:20:46 +0000
commit5a97622d5e053e935af0a9715ddd941fdaafcaf9 (patch)
tree9f703f1a0c1c4ca0ed023acd33f09d152c923426 /inet/getnameinfo.c
parent1fb05e3db1891142410bc58c320dfe281749fffe (diff)
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update from main archive 970221cvs/libc-970223cvs/libc-970222
1997-02-22 00:17 Ulrich Drepper <drepper@cygnus.com> * catgets/gencat.c: Change to use argp. * db/makedb: Likewise. * locale/programs/localedef.c: Likewise. * locale/programs/locale.c: Little adjustment for better usage of argp. 1997-02-20 20:07 Greg McGary <gkm@eng.ascend.com> * Makeconfig: Add rules for libc with bounded pointers. * Makerules: Likewise. * config.make.in: Likewise. * configure.in: Likewise. 1997-02-21 10:41 Miles Bader <miles@gnu.ai.mit.edu> * argp.h (OPTION_NO_USAGE): New macro. * argp-help.c (usage_long_opt, usage_argful_short_opt, add_argless_short_opt): Implement OPTION_NO_USAGE. 1997-02-20 16:41 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/obstack.h: Fix typo. 1997-02-20 15:56 Miles Bader <miles@gnu.ai.mit.edu> * argp-fmtstream.c (__argp_fmtstream_update): Account for case where NEXTLINE points one past the end of the active buffer. * argp-help.c <stddef.h>: New include. (__argp_failure): Only exit if STATE says it's ok. (print_header, hol_entry_help): Use UPARAMS fields rather than constants. (_help): Call fill_in_uparams if necessary. (struct hol_help_state): New type. (struct pentry_state): Add hhstate field. Remove prev_entry & sep_groups fields. (hol_entry_help): Add HHSTATE parameter. Remove prev_entry & sep_groups parameters. Suppress duplicate arguments if requested, and note the fact. (print_header, comma): Use PEST->hhstate fields. (hol_help): Add HHSTATE variable & pass to hol_entry_help. Remove LAST_ENTRY & SEP_GROUPS variables. If any suplicate arguments were suppressed, print explanatory note. (filter_doc): Replace PEST parameter with STATE. (struct uparams): New type. (uparams): New variable. (struct uparam_name): New type. (uparam_names): New variable. (fill_in_uparams): New function. (__argp_failure, __argp_error, __argp_state_help): Make STATE parameter const. * argp.h (argp_state_help, __argp_state_help, argp_usage, __argp_usage, argp_error, __argp_error, argp_failure, __argp_failure): Make STATE parameter const. (ARGP_KEY_HELP_DUP_ARGS_NOTE): New macro. * argp.h (argp_program_bug_address): Make const. 1997-02-20 19:20 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/mman/syscalls.list: Explain msync interface. 1997-02-19 01:37 Erik Troan <ewt@redhat.com> * shadow/sgetspent_r.c: Accept empty third, fourth and fifth fields. 1997-02-20 14:44 Andreas Jaeger <aj@arthur.pfalz.de> * stdio-common/test-fseek.c: Remove temporary file, add copyright. 1997-02-20 17:51 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/netinet/in.h: Protect contents using __BEGIN/END_DECLS. Reported by a sun <asun@zoology.washington.edu>. * inet/net/ethernet.h: Move to sysdeps/unix/sysv/linux/net. * inet/Makefile (headers): Remove net/ethernet.h. * sysdeps/unix/sysv/linux/Makefile: Install net/ethernet.h. * sysdeps/unix/sysv/linux/Dist: Distribute net/ethernet.h. 1997-02-20 15:23 Thorsten Kukuk <kukuk@weber.uni-paderborn.de> * nss/nsswitch.c (__nss_configure_lookup): Use correct test when searching in sorted array. 1997-02-20 01:24 Philip Blundell <pjb27@cam.ac.uk> * inet/getnameinfo.c: Change to use reentrant getXXbyYY functions and protect modification of global data. 1997-02-19 18:48 Miles Bader <miles@gnu.ai.mit.edu> * argp-parse.c (argp_default_parser): Set STATE->name for OPT_PROGNAME. (parser_init): Use the basename for PARSER->state.name. * argp-help.c (__argp_error, __argp_failure, __argp_state_help): Use PROGRAM_INVOCATION_SHORT_NAME instead of PROGRAM_INVOCATION_NAME. * argp-parse.c (parser_init): Set PARSER->state.flags. Make check whether PARSER has the prog name in argv[0] at the proper place. 1997-02-19 23:34 Ulrich Drepper <drepper@cygnus.com> * locale/programs/ld-time.c (time_finish): t_fmt_ampm is optional. Use default value instead of printing a warning. * nss/XXX-lookup.c: Add misssing explanation. 1997-02-19 19:14 Andreas Jaeger <aj@arthur.pfalz.de> * inet/in6_addr.c: Add missing braces. * inet/getnameinfo.c: Include <arpa/inet.h>. * sysdeps/posix/getaddrinfo.c: Include <arpa/inet.h>. 1997-02-19 11:46 Ulrich Drepper <drepper@cygnus.com> * string/strxfrm.c (STRCOLL): Correct handling of `position' levels with no non-IGNOREd element and handling of NUL byte. * string/strcoll.c (STRXFRM): Likewise. * locale/weight.h: Likewise. * shadow/sgetspent_r.c (LINE_PARSER): Add missing ')'.
Diffstat (limited to 'inet/getnameinfo.c')
-rw-r--r--inet/getnameinfo.c158
1 files changed, 124 insertions, 34 deletions
diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c
index b9454f6396..95ed6bf3f9 100644
--- a/inet/getnameinfo.c
+++ b/inet/getnameinfo.c
@@ -45,6 +45,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define INET6 1
#define LOCAL 1
#define HOSTTABLE 0
+#define RESOLVER 1
#include <sys/types.h>
#include <sys/socket.h>
@@ -59,6 +60,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string.h>
#include <stdio.h>
#include <unistd.h>
+#include <alloca.h>
+#include <libc-lock.h>
+#include <arpa/inet.h>
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
@@ -79,39 +83,91 @@ struct hostent *_addr2hostname_hosts(const char *, int, int);
static char *domain;
static char domainbuffer[MAXHOSTNAMELEN];
-
-static char *
-nrl_domainname (void)
+static char *nrl_domainname(void)
{
static int first = 1;
if (first) {
- char *c;
- struct hostent *h;
-
- first = 0;
-
- if ((h = gethostbyname("localhost")) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
-
- if (!gethostname(domainbuffer, sizeof(domainbuffer))) {
- if (c = strchr(domainbuffer, '.'))
- return (domain = ++c);
-
- if ((h = gethostbyname(domainbuffer)) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
- }
- {
- struct in_addr in_addr;
+ __libc_lock_define_initialized (static, lock);
+ __libc_lock_lock (lock);
+
+ if (first) {
+ char *c;
+ struct hostent *h, th;
+ int tmpbuflen = 1024;
+ char *tmpbuf = __alloca(tmpbuflen);
+ int herror;
+
+ first = 0;
+
+ while (__gethostbyname_r("localhost", &th, tmpbuf, tmpbuflen, &h,
+ &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
+
+ if (h && (c = strchr(h->h_name, '.'))) {
+ strcpy(domain = domainbuffer, ++c);
+ goto ret;
+ }
+
+ if (!gethostname(domainbuffer, sizeof(domainbuffer))) {
+ if (c = strchr(domainbuffer, '.')) {
+ domain = ++c;
+ goto ret;
+ }
+
+ while (__gethostbyname_r(domainbuffer, &th, tmpbuf, tmpbuflen, &h,
+ &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
+
+ if (h && (c = strchr(h->h_name, '.'))) {
+ strcpy(domain = domainbuffer, ++c);
+ goto ret;
+ }
+ }
+
+ {
+ struct in_addr in_addr;
+
+ in_addr.s_addr = htonl(0x7f000001);
+
+ while (__gethostbyaddr_r((const char *)&in_addr, sizeof(struct in_addr), AF_INET, &th, tmpbuf, tmpbuflen, &h, &herror)) {
+ if (herror == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ }
+ } else {
+ break;
+ }
+ }
- in_addr.s_addr = htonl(0x7f000001);
+ if (h && (c = strchr(h->h_name, '.'))) {
+ domain = domainbuffer, ++c;
+ goto ret;
+ }
+ }
- if ((h = gethostbyaddr((const char *)&in_addr, sizeof(struct in_addr), AF_INET)) && (c = strchr(h->h_name, '.')))
- return strcpy(domain = domainbuffer, ++c);
}
- return NULL;
+ ret:
+ __libc_lock_unlock (lock);
};
return domain;
@@ -120,6 +176,10 @@ nrl_domainname (void)
int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t hostlen, char *serv, size_t servlen, int flags)
{
int serrno = errno;
+ int tmpbuflen = 1024;
+ int herrno;
+ char *tmpbuf = __alloca(tmpbuflen);
+ struct hostent th;
if (!sa)
return -1;
@@ -144,20 +204,39 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
#if RESOLVER
if (!h) {
#if INET6
- if (sa->sa_family == AF_INET6)
- h = gethostbyaddr((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6);
- else
+ if (sa->sa_family == AF_INET6) {
+ while (__gethostbyaddr_r((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6, &th, tmpbuf, tmpbuflen, &h, &herrno)) {
+ if (herrno == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ __set_h_errno(herrno);
+ goto fail;
+ }
+ } else {
+ break;
+ }
+ }
+ } else {
#endif /* INET6 */
- h = gethostbyaddr((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET);
- endhostent();
- };
+ while (__gethostbyaddr_r((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET, &th, tmpbuf, tmpbuflen, &h, &herrno)) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ break;
+ }
+ }
+ }
+ }
#endif /* RESOLVER */
if (h) {
if (flags & NI_NOFQDN) {
char *c;
if ((c = nrl_domainname()) && (c = strstr(h->h_name, c)) && (c != h->h_name) && (*(--c) == '.')) {
- strncpy(host, h->h_name, min(hostlen, (c - h->h_name)));
+ strncpy(host, h->h_name, min(hostlen, (size_t) (c - h->h_name)));
break;
};
};
@@ -210,8 +289,20 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
case AF_INET6:
#endif /* INET6 */
if (!(flags & NI_NUMERICSERV)) {
- struct servent *s;
- if (s = getservbyport(((struct sockaddr_in *)sa)->sin_port, (flags & NI_DGRAM) ? "udp" : "tcp")) {
+ struct servent *s, ts;
+ while (__getservbyport_r(((struct sockaddr_in *)sa)->sin_port, ((flags & NI_DGRAM) ? "udp" : "tcp"), &ts, tmpbuf, tmpbuflen, &s)) {
+ if (herrno == NETDB_INTERNAL) {
+ if (errno == ERANGE) {
+ tmpbuflen *= 2;
+ tmpbuf = __alloca(tmpbuflen);
+ } else {
+ goto fail;
+ }
+ } else {
+ break;
+ }
+ }
+ if (s) {
strncpy(serv, s->s_name, servlen);
break;
};
@@ -224,7 +315,6 @@ int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t ho
break;
#endif /* LOCAL */
};
-
if (host && (hostlen > 0))
host[hostlen-1] = 0;
if (serv && (servlen > 0))