/*
- * $Id: status.c,v 1.15 2003-06-09 14:42:40 srittau Exp $
- *
* Copyright (c) 1990,1993 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
*/
#include "config.h"
#endif /* HAVE_CONFIG_H */
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <ctype.h>
#include <string.h>
+#include <time.h>
#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/socket.h>
#include <atalk/logger.h>
+#if 0
#ifdef BSD4_4
#include <sys/param.h>
-#ifndef USE_GETHOSTID
+#ifndef HAVE_GETHOSTID
#include <sys/sysctl.h>
-#endif /* USE_GETHOSTID */
+#endif /* HAVE_GETHOSTID */
#endif /* BSD4_4 */
+#endif
+
+#include <arpa/inet.h>
+
+#ifdef HAVE_KERBEROS
+#ifdef HAVE_KRB5_KRB5_H
+#include <krb5/krb5.h>
+#else
+#include <krb5.h>
+#endif /* HAVE_KRB5_KRB5_H */
+#endif /* HAVE_KERBEROS */
-#include <netatalk/at.h>
-#include <netatalk/endian.h>
#include <atalk/dsi.h>
-#include <atalk/atp.h>
-#include <atalk/asp.h>
-#include <atalk/nbp.h>
+#include <atalk/unicode.h>
+#include <atalk/util.h>
+#include <atalk/globals.h>
-#include "globals.h" /* includes <netdb.h> */
#include "status.h"
#include "afp_config.h"
#include "icon.h"
+#include "uam_auth.h"
+
+static size_t maxstatuslen = 0;
+
+static int uam_gss_enabled()
+{
+ /* XXX: must be a better way to find out if uam_gss is active */
+ return auth_uamfind(UAM_SERVER_LOGIN_EXT,
+ "Client Krb v2",
+ sizeof("Client Krb v2")) != NULL;
+}
-static void status_flags(char *data, const int notif, const int ipok,
- const unsigned char passwdbits, const int dirsrvcs)
+static void status_flags(char *data,
+ const int notif,
+ const int ipok,
+ const unsigned char passwdbits,
+ const int dirsrvcs,
+ int flags)
{
- u_int16_t status;
+ uint16_t status;
+
+ status = AFPSRVRINFO_COPY
+ | AFPSRVRINFO_SRVSIGNATURE
+ | AFPSRVRINFO_SRVMSGS
+ | AFPSRVRINFO_FASTBOZO
+ | AFPSRVRINFO_SRVUTF8
+ | AFPSRVRINFO_EXTSLEEP;
- status = AFPSRVRINFO_COPY;
if (passwdbits & PASSWD_SET) /* some uams may not allow this. */
status |= AFPSRVRINFO_PASSWD;
if (passwdbits & PASSWD_NOSAVE)
status |= AFPSRVRINFO_NOSAVEPASSWD;
- status |= AFPSRVRINFO_SRVSIGNATURE;
- /* only advertise tcp/ip if we have a valid address */
- if (ipok)
+ if (ipok) /* only advertise tcp/ip if we have a valid address */
status |= AFPSRVRINFO_TCPIP;
- status |= AFPSRVRINFO_SRVMSGS;
- /* Allow the user to decide if we should support server notifications.
- * With this turned off, the clients will poll for directory changes every
- * 10 seconds. This might be too costly to network resources, so make
- * this an optional thing. Default will be to _not_ support server
- * notifications. */
- if (notif) {
+ if (notif) /* Default is yes */
status |= AFPSRVRINFO_SRVNOTIFY;
- }
- status |= AFPSRVRINFO_FASTBOZO;
if (dirsrvcs)
- status |= AFPSRVRINFO_SRVRDIR;
+ status |= AFPSRVRINFO_SRVRDIR;
+ if (flags & OPTION_UUID)
+ status |= AFPSRVRINFO_UUID;
+
status = htons(status);
memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
}
-static int status_server(char *data, const char *server)
+static int status_server(char *data, const char *server, const struct afp_options *options)
{
char *start = data;
char *Obj, *Type, *Zone;
- u_int16_t status;
- int len;
+ char buf[32];
+ uint16_t status;
+ size_t len;
/* make room for all offsets before server name */
data += AFPSTATUS_PRELEN;
/* extract the obj part of the server */
Obj = (char *) server;
- nbp_name(server, &Obj, &Type, &Zone);
- len = strlen(Obj);
- *data++ = len;
- memcpy( data, Obj, len );
+ if ((size_t)-1 == (len = convert_string(
+ options->unixcharset, options->maccharset,
+ Obj, -1, buf, sizeof(buf))) ) {
+ len = MIN(strlen(Obj), 31);
+ *data++ = len;
+ memcpy( data, Obj, len );
+ LOG ( log_error, logtype_afpd, "Could not set servername, using fallback");
+ } else {
+ *data++ = len;
+ memcpy( data, buf, len );
+ }
if ((len + 1) & 1) /* pad server name and length byte to even boundary */
len++;
data += len;
- /* Make room for signature and net address offset. Save location of
- * signature offset. We're also making room for directory names offset
+ /* make room for signature and net address offset. save location of
+ * signature offset. we're also making room for directory names offset
* and the utf-8 server name offset.
*
- * NOTE: Technically, we don't need to reserve space for the
+ * NOTE: technically, we don't need to reserve space for the
* signature and net address offsets if they're not going to be
- * used. As there are no offsets after them, it doesn't hurt to
- * have them specified though. So, we just do that to simplify
+ * used. as there are no offsets after them, it doesn't hurt to
+ * have them specified though. so, we just do that to simplify
* things.
*
* NOTE2: AFP3.1 Documentation states that the directory names offset
static void status_machine(char *data)
{
char *start = data;
- u_int16_t status;
+ uint16_t status;
int len;
#ifdef AFS
const char *machine = "afs";
#else /* !AFS */
- const char *machine = "unix";
+ const char *machine = "Netatalk%s";
#endif /* AFS */
+ char buf[AFPSTATUS_MACHLEN+1];
memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
data += ntohs( status );
- len = strlen( machine );
+
+ if ((strlen(machine) + strlen(VERSION)) <= AFPSTATUS_MACHLEN) {
+ len = snprintf(buf, AFPSTATUS_MACHLEN + 1, machine, VERSION);
+ } else {
+ if (strlen(VERSION) > AFPSTATUS_MACHLEN) {
+ len = snprintf(buf, AFPSTATUS_MACHLEN + 1, VERSION);
+ } else {
+ (void)snprintf(buf, AFPSTATUS_MACHLEN + 1, machine, "");
+ (void)snprintf(buf + AFPSTATUS_MACHLEN - strlen(VERSION),
+ strlen(VERSION) + 1,
+ VERSION);
+ len = AFPSTATUS_MACHLEN;
+ }
+ }
+
*data++ = len;
- memcpy( data, machine, len );
+ memcpy( data, buf, len );
data += len;
+
status = htons(data - start);
memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
}
-
/* server signature is a 16-byte quantity */
-static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
+static uint16_t status_signature(char *data, int *servoffset,
const struct afp_options *options)
{
char *status;
- char *usersign;
- int i;
- u_int16_t offset, sigoff;
- long hostid;
- static int id = 0;
-#ifdef BSD4_4
- int mib[2];
- size_t len;
-#endif /* BSD4_4 */
+ uint16_t offset, sigoff;
status = data;
/* jump to server signature offset */
data += offset;
- /* Signature type is user string */
- if (strncmp(options->signature, "user", 4) == 0) {
- if (strlen(options->signature) <= 5) {
- LOG(log_warning, logtype_afpd, "Signature %s id not valid. Switching back to hostid.",
- options->signature);
- goto server_signature_hostid;
- }
- usersign = options->signature + 5;
- if (strlen(usersign) < 3)
- LOG(log_warning, logtype_afpd, "Signature %s is very short !",
- options->signature);
-
- memset(data, 0, 16);
- strncpy(data, usersign, 16);
- data += 16;
- goto server_signature_done;
- } /* signature = user */
-
- /* If signature type is a standard hostid... */
-server_signature_hostid:
- /* 16-byte signature consists of copies of the hostid */
-#if defined(BSD4_4) && defined(USE_GETHOSTID)
- mib[0] = CTL_KERN;
- mib[1] = KERN_HOSTID;
- len = sizeof(hostid);
- sysctl(mib, 2, &hostid, &len, NULL, 0);
-#else /* BSD4_4 && USE_GETHOSTID */
- hostid = gethostid();
-#endif /* BSD4_4 && USE_GETHOSTID */
- if (!hostid) {
- if (dsi)
- hostid = dsi->server.sin_addr.s_addr;
- else {
- struct hostent *host;
-
- if ((host = gethostbyname(options->hostname)))
- hostid = ((struct in_addr *) host->h_addr)->s_addr;
- }
- }
+ memset(data, 0, 16);
+ memcpy(data, options->signature, 16);
+ data += 16;
- /* it turns out that a server signature screws up separate
- * servers running on the same machine. to work around that,
- * i add in an increment */
- hostid += id;
- id++;
- for (i = 0; i < 16; i += sizeof(hostid)) {
- memcpy(data, &hostid, sizeof(hostid));
- data += sizeof(hostid);
- }
-
-server_signature_done:
/* calculate net address offset */
*servoffset += sizeof(offset);
offset = htons(data - status);
return sigoff;
}
-static int status_netaddress(char *data, int *servoffset,
- const ASP asp, const DSI *dsi,
- const char *fqdn)
+static size_t status_netaddress(char *data, int *servoffset,
+ const DSI *dsi,
+ const struct afp_options *options)
{
char *begin;
- u_int16_t offset;
+ uint16_t offset;
+ size_t addresses_len = 0;
begin = data;
/* number of addresses. this currently screws up if we have a dsi
connection, but we don't have the ip address. to get around this,
we turn off the status flag for tcp/ip. */
- *data++ = ((fqdn && dsi)? 1 : 0) + (dsi ? 1 : 0) + (asp ? 1 : 0);
-
- /* handle DNS names */
- if (fqdn && dsi) {
- int len = strlen(fqdn);
- *data++ = len +2;
- *data++ = 0x04;
- memcpy(data, fqdn, len);
- data += len;
- }
+ *data++ = ((options->fqdn && dsi)? 1 : 0) + (dsi ? 1 : 0) +
+ (((options->flags & OPTION_ANNOUNCESSH) && options->fqdn && dsi)? 1 : 0);
/* ip address */
if (dsi) {
- const struct sockaddr_in *inaddr = &dsi->server;
-
- if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
- *data++ = 6; /* length */
- *data++ = 0x01; /* basic ip address */
- memcpy(data, &inaddr->sin_addr.s_addr,
- sizeof(inaddr->sin_addr.s_addr));
- data += sizeof(inaddr->sin_addr.s_addr);
- } else {
- /* ip address + port */
- *data++ = 8;
- *data++ = 0x02; /* ip address with port */
- memcpy(data, &inaddr->sin_addr.s_addr,
- sizeof(inaddr->sin_addr.s_addr));
- data += sizeof(inaddr->sin_addr.s_addr);
- memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
- data += sizeof(inaddr->sin_port);
+ if (dsi->server.ss_family == AF_INET) { /* IPv4 */
+ const struct sockaddr_in *inaddr = (struct sockaddr_in *)&dsi->server;
+ if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
+ *data++ = 6; /* length */
+ *data++ = 0x01; /* basic ip address */
+ memcpy(data, &inaddr->sin_addr.s_addr,
+ sizeof(inaddr->sin_addr.s_addr));
+ data += sizeof(inaddr->sin_addr.s_addr);
+ addresses_len += 7;
+ } else {
+ /* ip address + port */
+ *data++ = 8;
+ *data++ = 0x02; /* ip address with port */
+ memcpy(data, &inaddr->sin_addr.s_addr,
+ sizeof(inaddr->sin_addr.s_addr));
+ data += sizeof(inaddr->sin_addr.s_addr);
+ memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
+ data += sizeof(inaddr->sin_port);
+ addresses_len += 9;
+ }
+ } else { /* IPv6 */
+ const struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&dsi->server;
+ if (sa6->sin6_port == htons(DSI_AFPOVERTCP_PORT)) {
+ *data++ = 18; /* length */
+ *data++ = 6; /* type */
+ memcpy(data, &sa6->sin6_addr.s6_addr, sizeof(sa6->sin6_addr.s6_addr));
+ data += sizeof(sa6->sin6_addr.s6_addr);
+ addresses_len += 19;
+ } else {
+ /* ip address + port */
+ *data++ = 20; /* length */
+ *data++ = 7; /* type*/
+ memcpy(data, &sa6->sin6_addr.s6_addr, sizeof(sa6->sin6_addr.s6_addr));
+ data += sizeof(sa6->sin6_addr.s6_addr);
+ memcpy(data, &sa6->sin6_port, sizeof(sa6->sin6_port));
+ data += sizeof(sa6->sin6_port);
+ addresses_len += 21;
+ }
+
}
}
-#ifndef NO_DDP
- if (asp) {
- const struct sockaddr_at *ddpaddr = atp_sockaddr(asp->asp_atp);
-
- /* ddp address */
- *data++ = 6;
- *data++ = 0x03; /* ddp address */
- memcpy(data, &ddpaddr->sat_addr.s_net, sizeof(ddpaddr->sat_addr.s_net));
- data += sizeof(ddpaddr->sat_addr.s_net);
- memcpy(data, &ddpaddr->sat_addr.s_node,
- sizeof(ddpaddr->sat_addr.s_node));
- data += sizeof(ddpaddr->sat_addr.s_node);
- memcpy(data, &ddpaddr->sat_port, sizeof(ddpaddr->sat_port));
- data += sizeof(ddpaddr->sat_port);
+ /* handle DNS names */
+ if (options->fqdn && dsi) {
+ size_t len = strlen(options->fqdn);
+ if ( len + 2 + addresses_len < maxstatuslen - offset) {
+ *data++ = len +2;
+ *data++ = 0x04;
+ memcpy(data, options->fqdn, len);
+ data += len;
+ addresses_len += len+2;
+ }
+
+ /* Annouce support for SSH tunneled AFP session,
+ * this feature is available since 10.3.2.
+ * According to the specs (AFP 3.1 p.225) this should
+ * be an IP+Port style value, but it only works with
+ * a FQDN. OSX Server uses FQDN as well.
+ */
+ if ( len + 2 + addresses_len < maxstatuslen - offset) {
+ if (options->flags & OPTION_ANNOUNCESSH) {
+ *data++ = len +2;
+ *data++ = 0x05;
+ memcpy(data, options->fqdn, len);
+ data += len;
+ }
+ }
}
-#endif /* ! NO_DDP */
/* calculate/store Directory Services Names offset */
offset = htons(data - begin);
return (data - begin);
}
-static int status_directorynames(char *data, int *diroffset,
- const DSI *dsi,
- const struct afp_options *options)
+static bool append_directoryname(char **pdata,
+ size_t offset,
+ size_t *size,
+ char* DirectoryNamesCount,
+ size_t len,
+ char *principal)
+{
+ if (sizeof(uint8_t) + len > maxstatuslen - offset - *size) {
+ LOG(log_error, logtype_afpd,
+ "status:DirectoryNames: out of space for principal '%s' (len=%d)",
+ principal, len);
+ return false;
+ } else if (len > 255) {
+ LOG(log_error, logtype_afpd,
+ "status:DirectoryNames: principal '%s' (len=%d) too long (max=255)",
+ principal, len);
+ return false;
+ }
+
+ LOG(log_info, logtype_afpd,
+ "DirectoryNames[%d]=%s",
+ *DirectoryNamesCount, principal);
+
+ *DirectoryNamesCount += 1;
+ char *data = *pdata;
+ *data++ = len;
+ strncpy(data, principal, len);
+
+ *pdata += len + 1;
+ *size += sizeof(uint8_t) + len;
+
+ return true;
+}
+
+/**
+ * DirectoryNamesCount offset: uint16_t
+ * ...
+ * DirectoryNamesCount: uint8_t
+ * DirectoryNames: list of UTF-8 Pascal strings (uint8_t + char[1,255])
+ */
+static size_t status_directorynames(char *data,
+ int *diroffset,
+ const DSI *dsi _U_,
+ const struct afp_options *options _U_)
{
char *begin = data;
- u_int16_t offset;
- memcpy(&offset, data + *diroffset, sizeof(offset));
+ uint16_t offset;
+
+ memcpy(&offset, begin + *diroffset, sizeof(offset));
offset = ntohs(offset);
data += offset;
- /* I can not find documentation of any other purpose for the
- * DirectoryNames field.
- */
- /*
- * Try to synthesize a principal:
- * service '/' fqdn '@' realm
- */
- if (options->k5service && options->k5realm && options->fqdn) {
- /* should k5princ be utf8 encoded? */
- u_int8_t len;
- char *p = strchr( options->fqdn, ':' );
- if (p)
- *p = '\0';
- len = strlen( options->k5service )
- + strlen( options->fqdn )
- + strlen( options->k5realm );
- len+=2; /* '/' and '@' */
- *data++ = 1; /* DirectoryNamesCount */
- *data++ = len;
- snprintf( data, len + 1, "%s/%s@%s", options->k5service,
- options->fqdn, options->k5realm );
- data += len;
- if (p)
- *p = ':';
+ char *DirectoryNamesCount = data++;
+ char *DirectoryNames = data;
+ size_t size = sizeof(uint8_t);
+ *DirectoryNamesCount = 0;
+
+ if (!uam_gss_enabled())
+ goto offset_calc;
+
+#ifdef HAVE_KERBEROS
+ krb5_context context;
+ krb5_error_code ret;
+ const char *error_msg;
+
+ if (krb5_init_context(&context)) {
+ LOG(log_error, logtype_afpd,
+ "status:DirectoryNames failed to intialize a krb5_context");
+ goto offset_calc;
+ }
+
+ krb5_keytab keytab;
+ if ((ret = krb5_kt_default(context, &keytab)))
+ goto krb5_error;
+
+ // figure out which service principal to use
+ krb5_keytab_entry entry;
+ char *principal;
+ if (options->k5service && options->fqdn && options->k5realm) {
+ LOG(log_debug, logtype_afpd,
+ "status:DirectoryNames: using service principal specified in options");
+
+ krb5_principal service_principal;
+ if ((ret = krb5_build_principal(context,
+ &service_principal,
+ strlen(options->k5realm),
+ options->k5realm,
+ options->k5service,
+ options->fqdn,
+ NULL)))
+ goto krb5_error;
+
+ // try to get the given service principal from keytab
+ ret = krb5_kt_get_entry(context,
+ keytab,
+ service_principal,
+ 0, // kvno - wildcard
+ 0, // enctype - wildcard
+ &entry);
+ if (ret == KRB5_KT_NOTFOUND) {
+ krb5_unparse_name(context, service_principal, &principal);
+ LOG(log_error, logtype_afpd,
+ "status:DirectoryNames: specified service principal '%s' not found in keytab",
+ principal);
+ // XXX: should this be krb5_xfree?
+#ifdef HAVE_KRB5_FREE_UNPARSED_NAME
+ krb5_free_unparsed_name(context, principal);
+#else
+ krb5_xfree(principal);
+#endif
+ goto krb5_cleanup;
+ }
+ krb5_free_principal(context, service_principal);
+ if (ret)
+ goto krb5_error;
} else {
- memset(begin + *diroffset, 0, sizeof(offset));
+ LOG(log_debug, logtype_afpd,
+ "status:DirectoryNames: using first entry from keytab as service principal");
+
+ krb5_kt_cursor cursor;
+ if ((ret = krb5_kt_start_seq_get(context, keytab, &cursor)))
+ goto krb5_error;
+
+ ret = krb5_kt_next_entry(context, keytab, &entry, &cursor);
+ krb5_kt_end_seq_get(context, keytab, &cursor);
+ if (ret)
+ goto krb5_error;
+ }
+
+ krb5_unparse_name(context, entry.principal, &principal);
+ krb5_kt_free_entry(context, &entry);
+
+ append_directoryname(&data,
+ offset,
+ &size,
+ DirectoryNamesCount,
+ strlen(principal),
+ principal);
+
+ free(principal);
+ goto krb5_cleanup;
+
+krb5_error:
+ if (ret) {
+ error_msg = krb5_get_error_message(context, ret);
+ LOG(log_note, logtype_afpd, "Can't get principal from default keytab: %s",
+ (char *)error_msg);
+#ifdef HAVE_KRB5_FREE_ERROR_MESSAGE
+ krb5_free_error_message(context, error_msg);
+#else
+ krb5_xfree(error_msg);
+#endif
}
+krb5_cleanup:
+ krb5_kt_close(context, keytab);
+ krb5_free_context(context);
+#else
+ if (!options->k5service || !options->fqdn || !options->k5realm)
+ goto offset_calc;
+
+ char principal[255];
+ size_t len = snprintf(principal, sizeof(principal), "%s/%s@%s",
+ options->k5service, options->fqdn, options->k5realm);
+
+ append_directoryname(&data,
+ offset,
+ &size,
+ DirectoryNamesCount,
+ strlen(principal),
+ principal);
+#endif // HAVE_KERBEROS
+
+offset_calc:
/* Calculate and store offset for UTF8ServerName */
- *diroffset += sizeof(u_int16_t);
+ *diroffset += sizeof(uint16_t);
offset = htons(data - begin);
- memcpy(begin + *diroffset, &offset, sizeof(u_int16_t));
+ memcpy(begin + *diroffset, &offset, sizeof(uint16_t));
/* return length of buffer */
return (data - begin);
}
-static int status_utf8servername(char *data, int *nameoffset,
- const DSI *dsi,
+static size_t status_utf8servername(char *data, int *nameoffset,
+ const DSI *dsi _U_,
const struct afp_options *options)
{
+ uint16_t namelen;
+ size_t len;
char *begin = data;
- u_int16_t offset;
+ uint16_t offset, status;
memcpy(&offset, data + *nameoffset, sizeof(offset));
offset = ntohs(offset);
data += offset;
- /* FIXME: For now we set the UTF-8 ServerName offset to 0
- * It's irrelevent anyway until we set the appropriate Flags value.
- * Later this can be set to something meaningful.
- *
- * What is the valid character range for an nbpname?
- *
- * Apple's server likes to use the non-qualified hostname
- * This obviously won't work very well if multiple servers are running
- * on the box.
- */
- memset(begin + *nameoffset, 0, sizeof(offset));
+ LOG(log_info, logtype_afpd, "servername: %s", options->hostname);
+
+ if ((len = convert_string(options->unixcharset,
+ CH_UTF8_MAC,
+ options->hostname,
+ -1,
+ data + sizeof(namelen),
+ maxstatuslen-offset)) == (size_t)-1) {
+ LOG(log_error, logtype_afpd, "Could not set utf8 servername");
+
+ /* set offset to 0 */
+ memset(begin + *nameoffset, 0, sizeof(offset));
+ data = begin + offset;
+ } else {
+ namelen = htons(len);
+ memcpy( data, &namelen, sizeof(namelen));
+ data += sizeof(namelen);
+ data += len;
+ offset = htons(offset);
+ memcpy(begin + *nameoffset, &offset, sizeof(uint16_t));
+ }
/* return length of buffer */
return (data - begin);
{
char *start = data;
char *sigdata = data + sigoffset;
- u_int16_t ret, status;
+ uint16_t ret, status;
memcpy(&status, start + AFPSTATUS_ICONOFF, sizeof(status));
if ( icondata == NULL ) {
memcpy(sigdata, &ret, sizeof(ret));
}
-void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
- const struct afp_options *options)
+/* ---------------------
+ */
+void status_init(AFPObj *obj, DSI *dsi)
{
- ASP asp;
- DSI *dsi;
- char *status;
- int statuslen, c, sigoff;
-
- if (!(aspconfig || dsiconfig) || !options)
- return;
-
- if (aspconfig) {
- asp = aspconfig->obj.handle;
- status = aspconfig->status;
- } else
- asp = NULL;
-
- if (dsiconfig) {
- dsi = dsiconfig->obj.handle;
- if (!aspconfig)
- status = dsiconfig->status;
- } else
- dsi = NULL;
+ char *status = dsi->status;
+ size_t statuslen;
+ int c, sigoff, ipok = 0;
+ const struct afp_options *options = &obj->options;
+
+ maxstatuslen = sizeof(dsi->status);
+
+ if (dsi->server.ss_family == AF_INET) { /* IPv4 */
+ const struct sockaddr_in *sa4 = (struct sockaddr_in *)&dsi->server;
+ ipok = sa4->sin_addr.s_addr ? 1 : 0;
+ } else { /* IPv6 */
+ const struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&dsi->server;
+ for (int i=0; i<16; i++) {
+ if (sa6->sin6_addr.s6_addr[i]) {
+ ipok = 1;
+ break;
+ }
+ }
+ }
/*
* These routines must be called in order -- earlier calls
* (16-bytes), network addresses, volume icon/mask
*/
- status_flags(status, options->server_notif, options->fqdn ||
- (dsiconfig && dsi->server.sin_addr.s_addr),
+ status_flags(status,
+ options->flags & OPTION_SERVERNOTIF,
+ (options->fqdn || ipok),
options->passwdbits,
- (options->k5service && options->k5realm && options->fqdn));
+ 1,
+ options->flags);
/* returns offset to signature offset */
- c = status_server(status, options->server ? options->server :
- options->hostname);
+ c = status_server(status, options->hostname, options);
status_machine(status);
- status_versions(status);
+ status_versions(status, dsi);
status_uams(status, options->uamlist);
- if (options->flags & OPTION_CUSTOMICON)
- status_icon(status, icon, sizeof(icon), c);
- else
- status_icon(status, apple_atalk_icon, sizeof(apple_atalk_icon), c);
+ status_icon(status, icon, sizeof(icon), c);
- sigoff = status_signature(status, &c, dsi, options);
+ sigoff = status_signature(status, &c, options);
/* c now contains the offset where the netaddress offset lives */
- status_netaddress(status, &c, asp, dsi, options->fqdn);
+ status_netaddress(status, &c, dsi, options);
/* c now contains the offset where the Directory Names Count offset lives */
- status_directorynames(status, &c, dsi, options);
+ statuslen = status_directorynames(status, &c, dsi, options);
/* c now contains the offset where the UTF-8 ServerName offset lives */
- statuslen = status_utf8servername(status, &c, dsi, options);
+ if ( statuslen < maxstatuslen)
+ statuslen = status_utf8servername(status, &c, dsi, options);
+ dsi->signature = status + sigoff;
+ dsi->statuslen = statuslen;
+}
-#ifndef NO_DDP
- if (aspconfig) {
- asp_setstatus(asp, status, statuslen);
- aspconfig->signature = status + sigoff;
- aspconfig->statuslen = statuslen;
+/* set_signature() */
+/* */
+/* If found in conf file, use it. */
+/* If not found in conf file, genarate and append in conf file. */
+/* If conf file don't exist, create and genarate. */
+/* If cannot open conf file, use one-time signature. */
+/* If signature = xxxxx, use it. */
+
+void set_signature(struct afp_options *options) {
+ int fd, i;
+ struct stat tmpstat;
+ char *servername_conf;
+ int header = 0;
+ char buf[1024], *p;
+ FILE *fp = NULL, *randomp;
+ size_t len;
+ char *server_tmp;
+
+ server_tmp = options->hostname;
+ len = strlen(options->signatureopt);
+ if (len == 0) {
+ goto server_signature_auto; /* default */
+ } else if (len < 3) {
+ LOG(log_warning, logtype_afpd, "WARNING: signature string %s is very short!", options->signatureopt);
+ goto server_signature_user;
+ } else if (len > 16) {
+ LOG(log_warning, logtype_afpd, "WARNING: signature string %s is very long!", options->signatureopt);
+ len = 16;
+ goto server_signature_user;
+ } else {
+ LOG(log_info, logtype_afpd, "signature string is %s.", options->signatureopt);
+ goto server_signature_user;
}
-#endif /* ! NO_DDP */
-
- if (dsiconfig) {
- if (aspconfig) { /* copy to dsiconfig */
- memcpy(dsiconfig->status, status, ATP_MAXDATA);
- status = dsiconfig->status;
+
+server_signature_user:
+
+ /* Signature is defined in afp.conf */
+ memset(options->signature, 0, 16);
+ memcpy(options->signature, options->signatureopt, len);
+ goto server_signature_done;
+
+server_signature_auto:
+
+ /* Signature type is auto, using afp_signature.conf */
+ if (!stat(options->sigconffile, &tmpstat)) { /* conf file exists? */
+ if ((fp = fopen(options->sigconffile, "r")) != NULL) { /* read open? */
+ /* scan in the conf file */
+ while (fgets(buf, sizeof(buf), fp) != NULL) {
+ p = buf;
+ while (p && isblank(*p))
+ p++;
+ if (!p || (*p == '#') || (*p == '\n'))
+ continue; /* invalid line */
+ if (*p == '"') {
+ p++;
+ if ((servername_conf = strtok( p, "\"" )) == NULL)
+ continue; /* syntax error: invalid quoted servername */
+ } else {
+ if ((servername_conf = strtok( p, " \t" )) == NULL)
+ continue; /* syntax error: invalid servername */
+ }
+ p = strchr(p, '\0');
+ p++;
+ if (*p == '\0')
+ continue; /* syntax error: missing signature */
+
+ if (strcmp(server_tmp, servername_conf))
+ continue; /* another servername */
+
+ while (p && isblank(*p))
+ p++;
+ if ( 16 == sscanf(p, "%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX%2hhX",
+ &options->signature[ 0], &options->signature[ 1],
+ &options->signature[ 2], &options->signature[ 3],
+ &options->signature[ 4], &options->signature[ 5],
+ &options->signature[ 6], &options->signature[ 7],
+ &options->signature[ 8], &options->signature[ 9],
+ &options->signature[10], &options->signature[11],
+ &options->signature[12], &options->signature[13],
+ &options->signature[14], &options->signature[15]
+ )) {
+ fclose(fp);
+ goto server_signature_done; /* found in conf file */
+ }
+ }
+ if ((fp = freopen(options->sigconffile, "a+", fp)) != NULL) { /* append because not found */
+ fseek(fp, 0L, SEEK_END);
+ if(ftell(fp) == 0) { /* size = 0 */
+ header = 1;
+ goto server_signature_random;
+ } else {
+ fseek(fp, -1L, SEEK_END);
+ if(fgetc(fp) != '\n') fputc('\n', fp); /* last char is \n? */
+ goto server_signature_random;
+ }
+ } else {
+ LOG(log_error, logtype_afpd, "ERROR: Cannot write in %s (%s). Using one-time signature.",
+ options->sigconffile, strerror(errno));
+ goto server_signature_random;
+ }
+ } else {
+ LOG(log_error, logtype_afpd, "ERROR: Cannot read %s (%s). Using one-time signature.",
+ options->sigconffile, strerror(errno));
+ goto server_signature_random;
}
-
- if ((options->flags & OPTION_CUSTOMICON) == 0) {
- status_icon(status, apple_tcp_icon, sizeof(apple_tcp_icon), 0);
+ } else { /* conf file don't exist */
+ if (( fd = creat(options->sigconffile, 0644 )) < 0 ) {
+ LOG(log_error, logtype_afpd, "ERROR: Cannot create %s (%s). Using one-time signature.",
+ options->sigconffile, strerror(errno));
+ goto server_signature_random;
}
- dsi_setstatus(dsi, status, statuslen);
- dsiconfig->signature = status + sigoff;
- dsiconfig->statuslen = statuslen;
+ if (( fp = fdopen( fd, "w" )) == NULL ) {
+ LOG(log_error, logtype_afpd, "ERROR: Cannot fdopen %s (%s). Using one-time signature.",
+ options->sigconffile, strerror(errno));
+ close(fd);
+ goto server_signature_random;
+ }
+ header = 1;
+ goto server_signature_random;
+ }
+
+server_signature_random:
+
+ /* generate signature from random number */
+ randombytes(options->signature, 16);
+
+ if (fp && header) { /* conf file is created or size=0 */
+ fprintf(fp, "# DON'T TOUCH NOR COPY THOUGHTLESSLY!\n");
+ fprintf(fp, "# This file is auto-generated by afpd.\n");
+ fprintf(fp, "# \n");
+ fprintf(fp, "# ServerSignature is unique identifier used to prevent logging on to\n");
+ fprintf(fp, "# the same server twice.\n");
+ fprintf(fp, "# \n");
+ fprintf(fp, "# If setting \"signature = xxxxx\" in afp.conf, this file is not used.\n\n");
}
+
+ if (fp) {
+ fprintf(fp, "\"%s\"\t", server_tmp);
+ for (i=0 ; i<16 ; i++) {
+ fprintf(fp, "%02X", (options->signature)[i]);
+ }
+ fprintf(fp, "%s", "\n");
+ fclose(fp);
+ }
+
+server_signature_done:
+
+ /* retrun */
+ LOG(log_info, logtype_afpd,
+ "signature is %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
+ (options->signature)[ 0], (options->signature)[ 1],
+ (options->signature)[ 2], (options->signature)[ 3],
+ (options->signature)[ 4], (options->signature)[ 5],
+ (options->signature)[ 6], (options->signature)[ 7],
+ (options->signature)[ 8], (options->signature)[ 9],
+ (options->signature)[10], (options->signature)[11],
+ (options->signature)[12], (options->signature)[13],
+ (options->signature)[14], (options->signature)[15]);
+
+ return;
}
/* this is the same as asp/dsi_getstatus */
-int afp_getsrvrinfo(obj, ibuf, ibuflen, rbuf, rbuflen )
-AFPObj *obj;
-char *ibuf, *rbuf;
-int ibuflen, *rbuflen;
+int afp_getsrvrinfo(AFPObj *obj, char *ibuf _U_, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
{
- AFPConfig *config = obj->config;
+ memcpy(rbuf, obj->dsi->status, obj->dsi->statuslen);
+ *rbuflen = obj->dsi->statuslen;
- memcpy(rbuf, config->status, config->statuslen);
- *rbuflen = config->statuslen;
return AFP_OK;
}
projects / netatalk.git / blobdiff