/*
- * $Id: status.c,v 1.16 2005-04-28 20:49:44 bfernhomberg Exp $
- *
* Copyright (c) 1990,1993 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
*/
#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 <netatalk/at.h>
#include <netatalk/endian.h>
#include <atalk/asp.h>
#include <atalk/nbp.h>
#include <atalk/unicode.h>
+#include <atalk/util.h>
#include "globals.h" /* includes <netdb.h> */
#include "status.h"
static size_t maxstatuslen = 0;
static void status_flags(char *data, const int notif, const int ipok,
- const unsigned char passwdbits, const int dirsrvcs _U_)
+ const unsigned char passwdbits, const int dirsrvcs _U_, int flags)
{
- u_int16_t status;
+ uint16_t status;
+
+ status = AFPSRVRINFO_COPY
+ | AFPSRVRINFO_SRVSIGNATURE
+ | AFPSRVRINFO_SRVMSGS
+ | AFPSRVRINFO_FASTBOZO
+ | AFPSRVRINFO_SRVRDIR
+ | 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;
- status |= AFPSRVRINFO_SRVRDIR; /* AFP 3.1 specs says we need to specify this, but may set the count to 0 */
- /* We don't set the UTF8 name flag here, we don't know whether we have enough space ... */
+ if (flags & OPTION_UUID)
+ status |= AFPSRVRINFO_UUID;
status = htons(status);
memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
nbp_name(server, &Obj, &Type, &Zone);
if ((size_t)-1 == (len = convert_string(
options->unixcharset, options->maccharset,
- Obj, strlen(Obj), buf, 31)) ) {
+ Obj, -1, buf, sizeof(buf))) ) {
len = MIN(strlen(Obj), 31);
*data++ = len;
memcpy( data, Obj, len );
#ifdef AFS
const char *machine = "afs";
#else /* !AFS */
- const char *machine = "Netatalk";
+ const char *machine = "Netatalk %s";
#endif /* AFS */
+ char buf[64];
memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
data += ntohs( status );
- len = strlen( machine );
+
+ // len = strlen( machine );
+ len = snprintf(buf, 64, machine, VERSION);
*data++ = len;
- memcpy( data, machine, len );
+ memcpy( data, buf, len );
data += len;
+
status = htons(data - start);
memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
}
-/* --------------------------------
- * 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.
- * Not great, server signature are config dependent but well.
- */
-
-static int Id = 0;
-
/* server signature is a 16-byte quantity */
-static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
+static u_int16_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;
-#ifdef BSD4_4
- int mib[2];
- size_t len;
-#endif /* BSD4_4 */
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;
- }
- }
-
- /* 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);
- }
+ memset(data, 0, 16);
+ memcpy(data, options->signature, 16);
+ data += 16;
-server_signature_done:
/* calculate net address offset */
*servoffset += sizeof(offset);
offset = htons(data - status);
/* 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);
- 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;
+ 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;
+ }
+
}
}
if ((size_t) -1 == (len = convert_string (
options->unixcharset, CH_UTF8_MAC,
- Obj, strlen(Obj), data+sizeof(namelen), maxstatuslen-offset )) ) {
+ Obj, -1, data+sizeof(namelen), maxstatuslen-offset )) ) {
LOG ( log_error, logtype_afpd, "Could not set utf8 servername");
/* set offset to 0 */
data += len;
offset = htons(offset);
memcpy(begin + *nameoffset, &offset, sizeof(u_int16_t));
-
- /* Now set the flag ... */
- memcpy(&status, begin + AFPSTATUS_FLAGOFF, sizeof(status));
- status = ntohs(status);
- status |= AFPSRVRINFO_SRVUTF8;
- status = htons(status);
- memcpy(begin + AFPSTATUS_FLAGOFF, &status, sizeof(status));
}
/* return length of buffer */
memcpy(sigdata, &ret, sizeof(ret));
}
-/* ---------------------
-*/
-void status_reset()
-{
- Id = 0;
-}
-
-
/* ---------------------
*/
void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
{
ASP asp;
DSI *dsi;
- u_int8_t *status = NULL;
+ char *status = NULL;
size_t statuslen;
- int c, sigoff;
+ int c, sigoff, ipok;
if (!(aspconfig || dsiconfig) || !options)
return;
} else
asp = NULL;
+ ipok = 0;
if (dsiconfig) {
status = dsiconfig->status;
maxstatuslen=sizeof(dsiconfig->status);
dsi = dsiconfig->obj.handle;
+ 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;
+ }
+ }
+ }
} else
dsi = NULL;
* (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->server_notif,
+ (options->fqdn || ipok),
options->passwdbits,
- (options->k5service && options->k5realm && options->fqdn));
+ (options->k5service && options->k5realm && options->fqdn),
+ options->flags);
/* returns offset to signature offset */
c = status_server(status, options->server ? options->server :
options->hostname, options);
status_machine(status);
- status_versions(status);
+ status_versions(status, asp, 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);
- 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);
}
}
+/* 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 user:xxxxx, use it. */
+
+void set_signature(struct afp_options *options) {
+ char *usersign;
+ 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->server ? options->server : options->hostname);
+ if (strcmp(options->signatureopt, "auto") == 0) {
+ goto server_signature_auto; /* default */
+ } else if (strcmp(options->signatureopt, "host") == 0) {
+ LOG(log_warning, logtype_afpd, "WARNING: option \"-signature host\" is obsoleted. Switching back to auto.", options->signatureopt);
+ goto server_signature_auto; /* same as auto */
+ } else if (strncmp(options->signatureopt, "user", 4) == 0) {
+ goto server_signature_user; /* user string */
+ } else {
+ LOG(log_error, logtype_afpd, "ERROR: option \"-signature %s\" is not valid. Switching back to auto.", options->signatureopt);
+ goto server_signature_auto; /* switch back to auto*/
+ }
+
+server_signature_user:
+
+ /* Signature type is user string */
+ len = strlen(options->signatureopt);
+ if (len <= 5) {
+ LOG(log_warning, logtype_afpd, "WARNING: option \"-signature %s\" is not valid. Switching back to auto.", options->signatureopt);
+ goto server_signature_auto;
+ }
+ usersign = options->signatureopt + 5;
+ len = len - 5;
+ if (len > 16) {
+ LOG(log_warning, logtype_afpd, "WARNING: signature user string %s is very long !", usersign);
+ len = 16;
+ } else if (len >= 3) {
+ LOG(log_info, logtype_afpd, "signature user string is %s.", usersign);
+ } else {
+ LOG(log_warning, logtype_afpd, "WARNING: signature user string %s is very short !", usersign);
+ }
+ memset(options->signature, 0, 16);
+ memcpy(options->signature, usersign, 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;
+ }
+ } 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;
+ }
+ 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 user:xxxxx\" in afpd.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,
+ " \"%s\"'s signature is %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
+ server_tmp,
+ (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 _U_, *rbuf;
-int ibuflen _U_, *rbuflen;
+int afp_getsrvrinfo(AFPObj *obj, char *ibuf _U_, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
{
AFPConfig *config = obj->config;
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