From 5a97622d5e053e935af0a9715ddd941fdaafcaf9 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 22 Feb 1997 01:20:46 +0000 Subject: update from main archive 970221 1997-02-22 00:17 Ulrich Drepper * 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 * Makeconfig: Add rules for libc with bounded pointers. * Makerules: Likewise. * config.make.in: Likewise. * configure.in: Likewise. 1997-02-21 10:41 Miles Bader * 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 * malloc/obstack.h: Fix typo. 1997-02-20 15:56 Miles Bader * argp-fmtstream.c (__argp_fmtstream_update): Account for case where NEXTLINE points one past the end of the active buffer. * argp-help.c : 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 * sysdeps/unix/mman/syscalls.list: Explain msync interface. 1997-02-19 01:37 Erik Troan * shadow/sgetspent_r.c: Accept empty third, fourth and fifth fields. 1997-02-20 14:44 Andreas Jaeger * stdio-common/test-fseek.c: Remove temporary file, add copyright. 1997-02-20 17:51 Ulrich Drepper * sysdeps/generic/netinet/in.h: Protect contents using __BEGIN/END_DECLS. Reported by a sun . * 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 * nss/nsswitch.c (__nss_configure_lookup): Use correct test when searching in sorted array. 1997-02-20 01:24 Philip Blundell * inet/getnameinfo.c: Change to use reentrant getXXbyYY functions and protect modification of global data. 1997-02-19 18:48 Miles Bader * 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 * 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 * inet/in6_addr.c: Add missing braces. * inet/getnameinfo.c: Include . * sysdeps/posix/getaddrinfo.c: Include . 1997-02-19 11:46 Ulrich Drepper * 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 ')'. --- inet/getnameinfo.c | 158 +++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 124 insertions(+), 34 deletions(-) (limited to 'inet/getnameinfo.c') 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 #include @@ -59,6 +60,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include #include #include +#include +#include +#include #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)) -- cgit v1.2.3