diff options
Diffstat (limited to 'usr/src/lib/libsmbfs/smb/getaddr.c')
| -rw-r--r-- | usr/src/lib/libsmbfs/smb/getaddr.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/usr/src/lib/libsmbfs/smb/getaddr.c b/usr/src/lib/libsmbfs/smb/getaddr.c new file mode 100644 index 0000000000..2847d858cb --- /dev/null +++ b/usr/src/lib/libsmbfs/smb/getaddr.c @@ -0,0 +1,215 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2009 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * Functions to get list of addresses (TCP and/or NetBIOS) + */ + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <unistd.h> +#include <netdb.h> +#include <libintl.h> +#include <xti.h> +#include <assert.h> + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/byteorder.h> +#include <sys/socket.h> +#include <sys/fcntl.h> + +#include <netinet/in.h> +#include <netinet/tcp.h> +#include <arpa/inet.h> + +#include <netsmb/smb.h> +#include <netsmb/smb_lib.h> +#include <netsmb/netbios.h> +#include <netsmb/nb_lib.h> +#include <netsmb/smb_dev.h> + +#include "charsets.h" +#include "private.h" + +void +dump_addrinfo(struct addrinfo *ai) +{ + int i; + + if (ai == NULL) { + printf("ai==NULL\n"); + return; + } + + for (i = 0; ai; i++, ai = ai->ai_next) { + printf("ai[%d]: af=%d, len=%d", i, + ai->ai_family, ai->ai_addrlen); + dump_sockaddr(ai->ai_addr); + if (ai->ai_canonname) { + printf("ai[%d]: cname=\"%s\"\n", + i, ai->ai_canonname); + } + } +} + +void +dump_sockaddr(struct sockaddr *sa) +{ + char paddrbuf[INET6_ADDRSTRLEN]; + struct sockaddr_in *sin; + struct sockaddr_in6 *sin6; + int af = sa->sa_family; + const char *ip; + + printf(" saf=%d,", af); + switch (af) { + case AF_NETBIOS: /* see nbns_rq.c */ + case AF_INET: + sin = (void *)sa; + ip = inet_ntop(AF_INET, &sin->sin_addr, + paddrbuf, sizeof (paddrbuf)); + break; + case AF_INET6: + sin6 = (void *)sa; + ip = inet_ntop(AF_INET6, &sin6->sin6_addr, + paddrbuf, sizeof (paddrbuf)); + break; + default: + ip = "?"; + break; + } + printf(" IP=%s\n", ip); +} + + +/* + * SMB client name resolution - normal, and/or NetBIOS. + * Returns an EAI_xxx error number like getaddrinfo(3) + */ +int +smb_ctx_getaddr(struct smb_ctx *ctx) +{ + struct nb_ctx *nbc = ctx->ct_nb; + struct addrinfo hints, *res; + char *srvaddr_str; + int gaierr, gaierr2; + + if (ctx->ct_fullserver == NULL || ctx->ct_fullserver[0] == '\0') + return (EAI_NONAME); + + if (ctx->ct_addrinfo != NULL) { + freeaddrinfo(ctx->ct_addrinfo); + ctx->ct_addrinfo = NULL; + } + + /* + * If the user specified an address, use it, + * and don't do NetBIOS lookup. + */ + if (ctx->ct_srvaddr_s) { + srvaddr_str = ctx->ct_srvaddr_s; + nbc->nb_flags &= ~NBCF_NS_ENABLE; + } else + srvaddr_str = ctx->ct_fullserver; + + /* + * Default the server name we'll use in the + * protocol (i.e. NTLM, tree connect). + * If we get a canonical name, we'll + * overwrite this below. + */ + strlcpy(ctx->ct_srvname, ctx->ct_fullserver, + sizeof (ctx->ct_srvname)); + + /* + * Try to lookup the host address using the + * normal name-to-IP address mechanisms. + * If that fails, we MAY try NetBIOS. + */ + memset(&hints, 0, sizeof (hints)); + hints.ai_flags = AI_CANONNAME; + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + gaierr = getaddrinfo(srvaddr_str, NULL, &hints, &res); + if (gaierr == 0) { +#if 1 + /* + * XXX Temporarily work-around CR 6831339: + * getaddrinfo() sets ai_canonname incorrectly + */ + char tmphost[256]; + gaierr2 = getnameinfo(res->ai_addr, res->ai_addrlen, + tmphost, sizeof (tmphost), + NULL, 0, NI_NAMEREQD); + if (gaierr2 == 0) { + DPRINT("cname: %s", tmphost); + strlcpy(ctx->ct_srvname, tmphost, + sizeof (ctx->ct_srvname)); + } +#else + if (res->ai_canonname) + strlcpy(ctx->ct_srvname, res->ai_canonname, + sizeof (ctx->ct_srvname)); +#endif + ctx->ct_addrinfo = res; + return (0); + } + + /* + * If regular IP name lookup failed, try NetBIOS, + * but only if given a valid NetBIOS name and if + * NetBIOS name lookup is enabled. + * + * Note: we only have ssn_srvname if the full name + * was also a valid NetBIOS name. + */ + if (nbc->nb_flags & NBCF_NS_ENABLE) { + gaierr2 = nbns_getaddrinfo(ctx->ct_fullserver, nbc, &res); + if (gaierr2 == 0) { + if (res->ai_canonname) + strlcpy(ctx->ct_srvname, + res->ai_canonname, + sizeof (ctx->ct_srvname)); + ctx->ct_addrinfo = res; + return (0); + } + } + + /* + * Return the original error from getaddrinfo + */ + if (smb_verbose) { + smb_error(dgettext(TEXT_DOMAIN, + "getaddrinfo: %s: %s"), 0, + ctx->ct_fullserver, + gai_strerror(gaierr)); + } + return (gaierr); +} |