/* * ++Copyright++ 1985, 1989, 1993 * - * Copyright (c) 1985, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * Portions Copyright (c) 1993 by Digital Equipment Corporation. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies, and that * the name of Digital Equipment Corporation not be used in advertising or * publicity pertaining to distribution of the document or software without * specific, written prior permission. * * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. * - * --Copyright-- */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93"; static char rcsid[] = "$Id$"; #endif /* LIBC_SCCS and not lint */ #include "struct.h" #include "common.h" #include "sys.h" #include "res.h" #include "numeric.h" #include "h.h" #include "inet.h" #include #ifndef _WIN32 #include #include #else #include #endif #include "nameser.h" #include "resolv.h" #include #ifndef IRC_RESCONF #define IRC_RESCONF "/etc/resolv.conf" #endif /*-------------------------------------- info about "sortlist" -------------- * Marc Majka 1994/04/16 * Allan Nathanson 1994/10/29 (BIND 4.9.3.x) * * NetInfo resolver configuration directory support. * * Allow a NetInfo directory to be created in the hierarchy which * contains the same information as the resolver configuration file. * * - The local domain name is stored as the value of the "domain" property. * - The Internet address(es) of the name server(s) are stored as values * of the "nameserver" property. * - The name server addresses are stored as values of the "nameserver" * property. * - The search list for host-name lookup is stored as values of the * "search" property. * - The sortlist comprised of IP address netmask pairs are stored as * values of the "sortlist" property. The IP address and optional netmask * should be seperated by a slash (/) or ampersand (&) character. * - Internal resolver variables can be set from the value of the "options" * property. */ #if defined(NEXT) # define NI_PATH_RESCONF "/locations/resolver" # define NI_TIMEOUT 10 static int ircd_netinfo_res_init(int *haveenv, int *havesearch); #endif static void ircd_res_setoptions(char *, char *); #ifdef RESOLVSORT static const char sort_mask[] = "/&"; #define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL) #ifdef INET6 static u_int32_t ircd_net_mask(struct in_addr); #else static u_int32_t ircd_net_mask(struct in_addr); #endif #endif #if !defined(isascii) /* XXX - could be a function */ # define isascii(c) (!(c & 0200)) #endif /* * Resolver state default settings. */ struct __res_state ircd_res # if defined(__BIND_RES_TEXT) = { RES_TIMEOUT, } /* Motorola, et al. */ # endif ; /* * Set up default settings. If the configuration file exist, the values * there will have precedence. Otherwise, the server address is set to * INADDR_ANY and the default domain name comes from the gethostname(). * * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1 * rather than INADDR_ANY ("0.0.0.0") as the default name server address * since it was noted that INADDR_ANY actually meant ``the first interface * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface, * it had to be "up" in order for you to reach your own name server. It * was later decided that since the recommended practice is to always * install local static routes through 127.0.0.1 for all your network * interfaces, that we could solve this problem without a code change. * * The configuration file should always be used, since it is the only way * to specify a default domain. If you are running a server on your local * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1" * in the configuration file. * * Copied WIN32 specific code from ircu NT port :p. * * Return 0 if completes successfully, -1 on error */ #ifdef _WIN32 extern OSVERSIONINFO VerInfo; void get_res_from_reg_9x() { register char *cp, **pp, *ap; register int n; HKEY hKey; char buf[BUFSIZ]; int key_len = BUFSIZ; int key_type; ircd_res.nscount = 0; if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\VxD\\MSTCP", 0, KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS) { Debug((DEBUG_DNS, "Error: get_res_from_reg_9x: unable to open registry key")); return; } /* Retreive the Domain key */ if (RegQueryValueEx(hKey, "Domain", 0, &key_type, buf, &key_len) != ERROR_SUCCESS) { Debug((DEBUG_DNS, "get_res_from_reg_9x: RegQueryValueEx: Domain failed")); } else strlcpy(ircd_res.defdname, buf, sizeof(ircd_res.defdname)); key_len = BUFSIZ; /* Retreive the SearchList key */ if (RegQueryValueEx(hKey, "SearchList", 0, &key_type, buf, &key_len) != ERROR_SUCCESS) { Debug((DEBUG_DNS, "get_res_from_reg_9x: RegQueryValueEx: SearchList failed")); } else { cp = ircd_res.defdname; pp = ircd_res.dnsrch; *pp++ = cp; for (n = 0; *cp && pp < ircd_res.dnsrch + MAXDNSRCH; cp++) { if (*cp == ',') { *cp = 0; n = 1; } else if (n) { *pp++ = cp; n = 0; } } /* null terminate the last domain if there are excess */ while (*cp && *cp != ',') ++cp; *cp = 0; *pp++ = 0; } key_len = BUFSIZ; /* Retreive the NameServer key */ if (RegQueryValueEx(hKey, "NameServer", 0, &key_type, buf, &key_len) != ERROR_SUCCESS) { Debug((DEBUG_DNS, "get_res_from_reg_9x: RegQueryValueEx: NameServer failed")); } else { struct in_addr a; cp = ap = buf; if (*buf != '\0') { do { n = 0; while (*cp && *cp != ',') ++cp; if (*cp) { *cp = 0; n = 1; } if (inet_addr(ap) != INADDR_NONE) { ircd_res.nsaddr_list[ircd_res.nscount].sin_addr.s_addr = inet_addr(ap); ircd_res.nsaddr_list[ircd_res.nscount].sin_family = AF_INET; ircd_res.nsaddr_list[ircd_res.nscount].sin_port = htons(NAMESERVER_PORT); ircd_res.nscount++; } if (!n) break; ap = ++cp; } while (ircd_res.nscount <= MAXNS); } } RegCloseKey(hKey); } int get_res_nt(HKEY hKey, char *subkey, char *obuf, int *size) { if (RegQueryValueEx(hKey, subkey, 0, NULL, obuf, size) != ERROR_SUCCESS) { *size = 0; return 0; } if (*size == 1) { *size = 0; return 0; } return 1; } int get_res_interfaces_nt(HKEY hKey, char *subkey, char *obuf, int *size) { char buf[BUFSIZ]; int key_len = BUFSIZ; int idx = 0; FILETIME lastwrite; HKEY hVal; while (RegEnumKeyEx(hKey, idx++, buf, &key_len, 0, NULL, NULL, &lastwrite) != ERROR_NO_MORE_ITEMS) { if (RegOpenKeyEx(hKey, buf, 0, KEY_QUERY_VALUE, &hVal) != ERROR_SUCCESS) continue; key_len = BUFSIZ; if (!get_res_nt(hVal, subkey, obuf, &key_len)) { RegCloseKey(hVal); key_len = BUFSIZ; continue; } else { RegCloseKey(hVal); *size = key_len; return 1; } key_len = BUFSIZ; } *size = 0; return 0; } void get_res_from_reg_nt() { register char *cp, **pp, *ap; register int n; HKEY hKey, hInter; char buf[BUFSIZ]; int key_len = BUFSIZ; ircd_res.nscount = 0; if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\Tcpip\\Parameters", 0, KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS) { Debug((DEBUG_DNS, "Error: get_res_from_reg_nt: unable to open registry key")); return; } RegOpenKeyEx(hKey, "Interfaces", 0, KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &hInter); /* Retreive the Domain key */ if (!get_res_nt(hKey, "Domain", buf, &key_len)) { key_len = BUFSIZ; /* Try DHCP key */ if (!get_res_nt(hKey, "DhcpDomain", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "Domain", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "DhcpDomain", buf, &key_len)) { Debug((DEBUG_DNS, "get_res_from_reg_nt: RegQueryValueEx: Domain failed")); } } } } if (key_len > 0) strlcpy(ircd_res.defdname, buf, sizeof(ircd_res.defdname)); /* Retreive the SearchList key */ key_len = BUFSIZ; if (!get_res_nt(hKey, "SearchList", buf, &key_len)) { key_len = BUFSIZ; /* Try DHCP key */ if (!get_res_nt(hKey, "DhcpSearchList", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "SearchList", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "DhcpSearchList", buf, &key_len)) { Debug((DEBUG_DNS, "get_res_from_reg_nt: RegQueryValueEx: SearchList failed")); } } } } if (key_len > 0) { /* * Set search list to be blank-separated strings * on rest of line. */ cp = ircd_res.defdname; pp = ircd_res.dnsrch; *pp++ = cp; for (n = 0; *cp && pp < ircd_res.dnsrch + MAXDNSRCH; cp++) { if (*cp == ' ' || *cp == '\t') { *cp = 0; n = 1; } else if (n) { *pp++ = cp; n = 0; } } /* null terminate the last domain if there are excess */ while (*cp && *cp != ' ' && *cp != '\t') ++cp; *cp = 0; *pp++ = 0; } /* Retreive the NameServer key */ key_len = BUFSIZ; if (!get_res_nt(hKey, "NameServer", buf, &key_len)) { key_len = BUFSIZ; /* Try DHCP key */ if (!get_res_nt(hKey, "DhcpNameServer", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "NameServer", buf, &key_len)) { key_len = BUFSIZ; if (!get_res_interfaces_nt(hInter, "DhcpNameServer", buf, &key_len)) { Debug((DEBUG_DNS, "get_res_from_reg_nt: RegQueryValue: NameServer failed")); } } } } if (key_len > 0) { struct in_addr a; cp = ap = buf; if (*buf != '\0') { do { n = 0; while (*cp && *cp != ' ' && *cp != '\t' && *cp != ',') ++cp; if (*cp) { *cp = 0; n = 1; } if (inet_addr(ap) != INADDR_NONE) { ircd_res.nsaddr_list[ircd_res.nscount].sin_addr.s_addr = inet_addr(ap); ircd_res.nsaddr_list[ircd_res.nscount].sin_family = AF_INET; ircd_res.nsaddr_list[ircd_res.nscount].sin_port = htons(NAMESERVER_PORT); ircd_res.nscount++; } if (!n) break; ap = ++cp; } while (ircd_res.nscount <= MAXNS); } } RegCloseKey(hInter); RegCloseKey(hKey); } #endif int ircd_res_init(void) { static int initialized = 0; #ifndef _WIN32 register FILE *fp; #endif register char *cp, **pp; register int n; char buf[MAXDNAME]; int nserv = 0; /* number of nameserver records read from file */ int haveenv = 0; int havesearch = 0; #ifdef RESOLVSORT int nsort = 0; char *net; #endif #ifndef RFC1535 int dots; #endif /* If already initialized, do nothing... */ if (initialized) return 0; initialized = 1; /* * These three fields used to be statically initialized. This made * it hard to use this code in a shared library. It is necessary, * now that we're doing dynamic initialization here, that we preserve * the old semantics: if an application modifies one of these three * fields of _res before res_init() is called, res_init() will not * alter them. Of course, if an application is setting them to * _zero_ before calling res_init(), hoping to override what used * to be the static default, we can't detect it and unexpected results * will follow. Zero for any of these fields would make no sense, * so one can safely assume that the applications were already getting * unexpected results. * * _res.options is tricky since some apps were known to diddle the bits * before res_init() was first called. We can't replicate that semantic * with dynamic initialization (they may have turned bits off that are * set in RES_DEFAULT). Our solution is to declare such applications * "broken". They could fool us by setting RES_INIT but none do (yet). */ if (!ircd_res.retrans) ircd_res.retrans = RES_TIMEOUT; if (!ircd_res.retry) ircd_res.retry = 4; if (!(ircd_res.options & RES_INIT)) ircd_res.options = RES_DEFAULT; /* * This one used to initialize implicitly to zero, so unless the app * has set it to something in particular, we can randomize it now. */ if (!ircd_res.id) ircd_res.id = ircd_res_randomid(); /*ifdef INET6 not, because of IPv4 DNS serving */ #ifdef USELOOPBACK ircd_res.nsaddr.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1); #else ircd_res.nsaddr.sin_addr.s_addr = INADDR_ANY; #endif ircd_res.nsaddr.sin_family = AF_INET; ircd_res.nsaddr.sin_port = htons(NAMESERVER_PORT); ircd_res.nscount = 1; ircd_res.ndots = 1; ircd_res.pfcode = 0; /* Allow user to override the local domain definition */ if ((cp = getenv("LOCALDOMAIN")) != NULL) { strncpyzt(ircd_res.defdname, cp, sizeof(ircd_res.defdname)); haveenv++; /* * Set search list to be blank-separated strings * from rest of env value. Permits users of LOCALDOMAIN * to still have a search list, and anyone to set the * one that they want to use as an individual (even more * important now that the rfc1535 stuff restricts searches) */ cp = ircd_res.defdname; pp = ircd_res.dnsrch; *pp++ = cp; for (n = 0; *cp && pp < ircd_res.dnsrch + MAXDNSRCH; cp++) { if (*cp == '\n') /* silly backwards compat */ break; else if (*cp == ' ' || *cp == '\t') { *cp = 0; n = 1; } else if (n) { *pp++ = cp; n = 0; havesearch = 1; } } /* null terminate last domain if there are excess */ while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n') cp++; *cp = '\0'; *pp++ = 0; } #ifndef _WIN32 #define MATCH(line, name) \ (!strncmp(line, name, sizeof(name) - 1) && \ (line[sizeof(name) - 1] == ' ' || \ line[sizeof(name) - 1] == '\t')) #ifdef NEXT if (ircd_netinfo_res_init(&haveenv, &havesearch) == 0) #endif if ((fp = fopen(IRC_RESCONF, "r")) != NULL) { /* read the config file */ while (fgets(buf, sizeof(buf), fp) != NULL) { /* skip comments */ if (*buf == ';' || *buf == '#') continue; /* read default domain name */ if (MATCH(buf, "domain")) { if (haveenv) /* skip if have from environ */ continue; cp = buf + sizeof("domain") - 1; while (*cp == ' ' || *cp == '\t') cp++; if ((*cp == '\0') || (*cp == '\n')) continue; strncpyzt(ircd_res.defdname, cp, sizeof(ircd_res.defdname)); if ((cp = strpbrk(ircd_res.defdname, " \t\n")) != NULL) *cp = '\0'; havesearch = 0; continue; } /* set search list */ if (MATCH(buf, "search")) { if (haveenv) /* skip if have from environ */ continue; cp = buf + sizeof("search") - 1; while (*cp == ' ' || *cp == '\t') cp++; if ((*cp == '\0') || (*cp == '\n')) continue; strncpyzt(ircd_res.defdname, cp, sizeof(ircd_res.defdname)); if ((cp = strchr(ircd_res.defdname, '\n')) != NULL) *cp = '\0'; /* * Set search list to be blank-separated strings * on rest of line. */ cp = ircd_res.defdname; pp = ircd_res.dnsrch; *pp++ = cp; for (n = 0; *cp && pp < ircd_res.dnsrch + MAXDNSRCH; cp++) { if (*cp == ' ' || *cp == '\t') { *cp = 0; n = 1; } else if (n) { *pp++ = cp; n = 0; } } /* null terminate last domain if there are excess */ while (*cp != '\0' && *cp != ' ' && *cp != '\t') cp++; *cp = '\0'; *pp++ = 0; havesearch = 1; continue; } /* read nameservers to query */ if (MATCH(buf, "nameserver") && nserv < MAXNS) { struct in_addr a; cp = buf + sizeof("nameserver") - 1; while (*cp == ' ' || *cp == '\t') cp++; if ((*cp != '\0') && (*cp != '\n') && inet_aton(cp, &a)) { ircd_res.nsaddr_list[nserv]. sin_addr = a; ircd_res.nsaddr_list[nserv]. sin_family = AF_INET; ircd_res.nsaddr_list[nserv]. sin_port = htons(NAMESERVER_PORT); nserv++; } continue; } #ifdef RESOLVSORT if (MATCH(buf, "sortlist")) { struct in_addr a; cp = buf + sizeof("sortlist") - 1; while (nsort < MAXRESOLVSORT) { while (*cp == ' ' || *cp == '\t') cp++; if (*cp == '\0' || *cp == '\n' || *cp == ';') break; net = cp; while (*cp && !ISSORTMASK(*cp) && *cp != ';' && isascii(*cp) && !isspace(*cp)) cp++; n = *cp; *cp = 0; if (inetaton(net, &a)) { ircd_res. sort_list[nsort]. addr = a; if (ISSORTMASK(n)) { *cp++ = n; net = cp; while (*cp && *cp != ';' && isascii(*cp) && !isspace (*cp)) cp++; n = *cp; *cp = 0; if (inetaton (net, &a)) { ircd_res. sort_list [nsort]. mask = a. s_addr; } else { ircd_res. sort_list [nsort]. mask = ircd_net_mask (ircd_res. sort_list [nsort]. addr); } } else { ircd_res. sort_list [nsort]. mask = ircd_net_mask (ircd_res. sort_list [nsort]. addr); } nsort++; } *cp = n; } continue; } #endif if (MATCH(buf, "options")) { ircd_res_setoptions(buf + sizeof("options") - 1, "conf"); continue; } } if (nserv > 1) ircd_res.nscount = nserv; #ifdef RESOLVSORT ircd_res.nsort = nsort; #endif (void)fclose(fp); } #else /* WIN32-specific code follows: */ if (VerInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) get_res_from_reg_9x(); else if (VerInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) get_res_from_reg_nt(); #endif /* WIN32 */ if (ircd_res.defdname[0] == 0 && gethostname(buf, sizeof(ircd_res.defdname) - 1) == 0 && (cp = strchr(buf, '.')) != NULL) strlcpy(ircd_res.defdname, cp + 1, sizeof ircd_res.defdname); /* find components of local domain that might be searched */ if (havesearch == 0) { pp = ircd_res.dnsrch; *pp++ = ircd_res.defdname; *pp = NULL; #ifndef RFC1535 dots = 0; for (cp = ircd_res.defdname; *cp; cp++) dots += (*cp == '.'); cp = ircd_res.defdname; while (pp < ircd_res.dnsrch + MAXDFLSRCH) { if (dots < LOCALDOMAINPARTS) break; cp = strchr(cp, '.') + 1; /* we know there is one */ *pp++ = cp; dots--; } *pp = NULL; #ifdef DEBUGMODE Debug((DEBUG_DNS, ";; res_init()... default dnsrch list:")); for (pp = ircd_res.dnsrch; *pp; pp++) { Debug((DEBUG_DNS, ";;\t%s", *pp)); } Debug((DEBUG_DNS, ";;\t..END..\n")); #endif /* DEBUG */ #endif /* !RFC1535 */ } if ((cp = getenv("RES_OPTIONS")) != NULL) ircd_res_setoptions(cp, "env"); ircd_res.options |= RES_INIT; #ifdef DEBUGMODE { int i; Debug((DEBUG_DNS, "res_init: %d nameserver(s):", ircd_res.nscount)); for (i=0; i < ircd_res.nscount; i++) Debug((DEBUG_DNS, "%d. %s", i, inet_ntoa(ircd_res.nsaddr_list[i].sin_addr))); } #endif return (0); } static void ircd_res_setoptions(char *options, char *source) { char *cp = options; int i; #ifdef DEBUGMODE Debug((DEBUG_DNS, ";; ircd_res_setoptions(\"%s\", \"%s\")...", options, source)); #endif while (*cp) { /* skip leading and inner runs of spaces */ while (*cp == ' ' || *cp == '\t') cp++; /* search for and process individual options */ if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) { i = atoi(cp + sizeof("ndots:") - 1); if (i <= RES_MAXNDOTS) ircd_res.ndots = i; else ircd_res.ndots = RES_MAXNDOTS; #ifdef DEBUGMODE Debug((DEBUG_DNS, ";;\tndots=%d", ircd_res.ndots)); #endif } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) { #ifdef DEBUGMODE Debug((DEBUG_DNS, ";; ircd_res_setoptions(\"%s\", \"%s\")..", options, source)); ircd_res.options |= RES_DEBUG; #endif } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) { ircd_res.options |= RES_USE_INET6; } else { /* XXX - print a warning here? */ } /* skip to next run of spaces */ while (*cp && *cp != ' ' && *cp != '\t') cp++; } } #ifdef RESOLVSORT /* XXX - should really support CIDR which means explicit masks always. */ static u_int32_t ircd_net_mask(struct in_addr in) /* XXX - should really use system's version of this */ { register u_int32_t i = ntohl(in.s_addr); if (IN_CLASSA(i)) return (htonl(IN_CLASSA_NET)); else if (IN_CLASSB(i)) return (htonl(IN_CLASSB_NET)); return (htonl(IN_CLASSC_NET)); } #endif #ifdef NEXT static int ircd_netinfo_res_init(int *haveenv, int *havesearch) { register int n; void *domain, *parent; ni_id dir; ni_status status; ni_namelist nl; int nserv = 0; #ifdef RESOLVSORT int nsort = 0; #endif status = ni_open(NULL, ".", &domain); if (status == NI_OK) { ni_setreadtimeout(domain, NI_TIMEOUT); ni_setabort(domain, 1); /* climb the NetInfo hierarchy to find a resolver directory */ while (status == NI_OK) { status = ni_pathsearch(domain, &dir, NI_PATH_RESCONF); if (status == NI_OK) { /* found a resolver directory */ if (*haveenv == 0) { /* get the default domain name */ status = ni_lookupprop(domain, &dir, "domain", &nl); if (status == NI_OK && nl.ni_namelist_len > 0) { (void)strncpy(ircd_res.defdname, nl.ni_namelist_val[0], sizeof(ircd_res.defdname) - 1); ircd_res. defdname[sizeof(ircd_res. defdname) - 1] = '\0'; ni_namelist_free(&nl); *havesearch = 0; } /* get search list */ status = ni_lookupprop(domain, &dir, "search", &nl); if (status == NI_OK && nl.ni_namelist_len > 0) { (void)strncpy(ircd_res.defdname, nl.ni_namelist_val[0], sizeof(ircd_res.defdname) - 1); ircd_res. defdname[sizeof(ircd_res. defdname) - 1] = '\0'; /* copy */ for (n = 0; n < nl.ni_namelist_len && n < MAXDNSRCH; n++) { /* duplicate up to MAXDNSRCH servers */ char *cp = nl. ni_namelist_val[n]; ircd_res.dnsrch[n] = strcpy((char *) malloc(strlen(cp) + 1), cp); } ni_namelist_free(&nl); *havesearch = 1; } } /* get list of nameservers */ status = ni_lookupprop(domain, &dir, "nameserver", &nl); if (status == NI_OK && nl.ni_namelist_len > 0) { /* copy up to MAXNS servers */ for (n = 0; n < nl.ni_namelist_len && nserv < MAXNS; n++) { struct in_addr a; if (inetaton(nl. ni_namelist_val[n], &a)) { ircd_res. nsaddr_list[nserv]. sin_addr = a; ircd_res. nsaddr_list[nserv]. sin_family = AF_INET; ircd_res. nsaddr_list[nserv]. sin_port = htons (NAMESERVER_PORT); nserv++; } } ni_namelist_free(&nl); } if (nserv > 1) ircd_res.nscount = nserv; #ifdef RESOLVSORT /* get sort order */ status = ni_lookupprop(domain, &dir, "sortlist", &nl); if (status == NI_OK && nl.ni_namelist_len > 0) { /* copy up to MAXRESOLVSORT address/netmask pairs */ for (n = 0; n < nl.ni_namelist_len && nsort < MAXRESOLVSORT; n++) { char ch; char *cp; const char *sp; struct in_addr a; cp = NULL; for (sp = sort_mask; *sp; sp++) { char *cp1; cp1 = strchr(nl. ni_namelist_val[n], *sp); if (cp && cp1) cp = (cp < cp1) ? cp : cp1; else if (cp1) cp = cp1; } if (cp != NULL) { ch = *cp; *cp = '\0'; break; } if (inetaton(nl. ni_namelist_val[n], &a)) { ircd_res. sort_list[nsort]. addr = a; if (*cp && ISSORTMASK(ch)) { *cp++ = ch; if (inetaton(cp, &a)) { ircd_res. sort_list [nsort]. mask = a. s_addr; } else { ircd_res. sort_list [nsort]. mask = ircd_net_mask (ircd_res. sort_list [nsort]. addr); } } else { ircd_res. sort_list [nsort]. mask = ircd_net_mask (ircd_res. sort_list [nsort]. addr); } nsort++; } } ni_namelist_free(&nl); } ircd_res.nsort = nsort; #endif /* get resolver options */ status = ni_lookupprop(domain, &dir, "options", &nl); if (status == NI_OK && nl.ni_namelist_len > 0) { ircd_res_setoptions(nl. ni_namelist_val[0], "conf"); ni_namelist_free(&nl); } ni_free(domain); return (1); /* using DNS configuration from NetInfo */ } status = ni_open(domain, "..", &parent); ni_free(domain); if (status == NI_OK) domain = parent; } } return (0); /* if not using DNS configuration from NetInfo */ } #endif /* NEXT */ u_int ircd_res_randomid() { #ifndef _WIN32 struct timeval now; gettimeofday(&now, NULL); return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid())); #else struct _timeb now; _ftime(&now); return (0xffff & (now.time ^ now.millitm ^ getpid())); #endif }