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-rw-r--r--crypto/heimdal/lib/kadm5/ipropd_master.c429
1 files changed, 364 insertions, 65 deletions
diff --git a/crypto/heimdal/lib/kadm5/ipropd_master.c b/crypto/heimdal/lib/kadm5/ipropd_master.c
index 537d403..bd8f71f 100644
--- a/crypto/heimdal/lib/kadm5/ipropd_master.c
+++ b/crypto/heimdal/lib/kadm5/ipropd_master.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
+ * Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
@@ -34,24 +34,34 @@
#include "iprop.h"
#include <rtbl.h>
-RCSID("$Id: ipropd_master.c,v 1.29 2003/03/19 11:56:38 lha Exp $");
+RCSID("$Id: ipropd_master.c 22211 2007-12-07 19:27:27Z lha $");
static krb5_log_facility *log_facility;
-const char *slave_stats_file = KADM5_SLAVE_STATS;
+const char *slave_stats_file;
+const char *slave_time_missing = "2 min";
+const char *slave_time_gone = "5 min";
+
+static int time_before_missing;
+static int time_before_gone;
+
+const char *master_hostname;
static int
make_signal_socket (krb5_context context)
{
struct sockaddr_un addr;
+ const char *fn;
int fd;
+ fn = kadm5_log_signal_socket(context);
+
fd = socket (AF_UNIX, SOCK_DGRAM, 0);
if (fd < 0)
krb5_err (context, 1, errno, "socket AF_UNIX");
memset (&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
- strlcpy (addr.sun_path, KADM5_LOG_SIGNAL, sizeof(addr.sun_path));
+ strlcpy (addr.sun_path, fn, sizeof(addr.sun_path));
unlink (addr.sun_path);
if (bind (fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
krb5_err (context, 1, errno, "bind %s", addr.sun_path);
@@ -59,7 +69,7 @@ make_signal_socket (krb5_context context)
}
static int
-make_listen_socket (krb5_context context)
+make_listen_socket (krb5_context context, const char *port_str)
{
int fd;
int one = 1;
@@ -71,8 +81,24 @@ make_listen_socket (krb5_context context)
setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(one));
memset (&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
- addr.sin_port = krb5_getportbyname (context,
- IPROP_SERVICE, "tcp", IPROP_PORT);
+
+ if (port_str) {
+ addr.sin_port = krb5_getportbyname (context,
+ port_str, "tcp",
+ 0);
+ if (addr.sin_port == 0) {
+ char *ptr;
+ long port;
+
+ port = strtol (port_str, &ptr, 10);
+ if (port == 0 && ptr == port_str)
+ krb5_errx (context, 1, "bad port `%s'", port_str);
+ addr.sin_port = htons(port);
+ }
+ } else {
+ addr.sin_port = krb5_getportbyname (context, IPROP_SERVICE,
+ "tcp", IPROP_PORT);
+ }
if(bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
krb5_err (context, 1, errno, "bind");
if (listen(fd, SOMAXCONN) < 0)
@@ -85,10 +111,11 @@ struct slave {
struct sockaddr_in addr;
char *name;
krb5_auth_context ac;
- u_int32_t version;
+ uint32_t version;
time_t seen;
unsigned long flags;
#define SLAVE_F_DEAD 0x1
+#define SLAVE_F_AYT 0x2
struct slave *next;
};
@@ -97,16 +124,27 @@ typedef struct slave slave;
static int
check_acl (krb5_context context, const char *name)
{
+ const char *fn;
FILE *fp;
char buf[256];
int ret = 1;
+ char *slavefile;
+
+ asprintf(&slavefile, "%s/slaves", hdb_db_dir(context));
- fp = fopen (KADM5_SLAVE_ACL, "r");
+ fn = krb5_config_get_string_default(context,
+ NULL,
+ slavefile,
+ "kdc",
+ "iprop-acl",
+ NULL);
+
+ fp = fopen (fn, "r");
+ free(slavefile);
if (fp == NULL)
return 1;
while (fgets(buf, sizeof(buf), fp) != NULL) {
- if (buf[strlen(buf) - 1 ] == '\n')
- buf[strlen(buf) - 1 ] = '\0';
+ buf[strcspn(buf, "\r\n")] = '\0';
if (strcmp (buf, name) == 0) {
ret = 0;
break;
@@ -119,12 +157,31 @@ check_acl (krb5_context context, const char *name)
static void
slave_seen(slave *s)
{
+ s->flags &= ~SLAVE_F_AYT;
s->seen = time(NULL);
}
+static int
+slave_missing_p (slave *s)
+{
+ if (time(NULL) > s->seen + time_before_missing)
+ return 1;
+ return 0;
+}
+
+static int
+slave_gone_p (slave *s)
+{
+ if (time(NULL) > s->seen + time_before_gone)
+ return 1;
+ return 0;
+}
+
static void
-slave_dead(slave *s)
+slave_dead(krb5_context context, slave *s)
{
+ krb5_warnx(context, "slave %s dead", s->name);
+
if (s->fd >= 0) {
close (s->fd);
s->fd = -1;
@@ -177,7 +234,11 @@ add_slave (krb5_context context, krb5_keytab keytab, slave **root, int fd)
krb5_warn (context, errno, "accept");
goto error;
}
- gethostname(hostname, sizeof(hostname));
+ if (master_hostname)
+ strlcpy(hostname, master_hostname, sizeof(hostname));
+ else
+ gethostname(hostname, sizeof(hostname));
+
ret = krb5_sname_to_principal (context, hostname, IPROP_NAME,
KRB5_NT_SRV_HST, &server);
if (ret) {
@@ -240,13 +301,14 @@ struct prop_context {
};
static int
-prop_one (krb5_context context, HDB *db, hdb_entry *entry, void *v)
+prop_one (krb5_context context, HDB *db, hdb_entry_ex *entry, void *v)
{
krb5_error_code ret;
+ krb5_storage *sp;
krb5_data data;
- struct slave *slave = (struct slave *)v;
+ struct slave *s = (struct slave *)v;
- ret = hdb_entry2value (context, entry, &data);
+ ret = hdb_entry2value (context, &entry->entry, &data);
if (ret)
return ret;
ret = krb5_data_realloc (&data, data.length + 4);
@@ -255,18 +317,25 @@ prop_one (krb5_context context, HDB *db, hdb_entry *entry, void *v)
return ret;
}
memmove ((char *)data.data + 4, data.data, data.length - 4);
- _krb5_put_int (data.data, ONE_PRINC, 4);
+ sp = krb5_storage_from_data(&data);
+ if (sp == NULL) {
+ krb5_data_free (&data);
+ return ENOMEM;
+ }
+ krb5_store_int32(sp, ONE_PRINC);
+ krb5_storage_free(sp);
- ret = krb5_write_priv_message (context, slave->ac, &slave->fd, &data);
+ ret = krb5_write_priv_message (context, s->ac, &s->fd, &data);
krb5_data_free (&data);
return ret;
}
static int
send_complete (krb5_context context, slave *s,
- const char *database, u_int32_t current_version)
+ const char *database, uint32_t current_version)
{
krb5_error_code ret;
+ krb5_storage *sp;
HDB *db;
krb5_data data;
char buf[8];
@@ -274,11 +343,15 @@ send_complete (krb5_context context, slave *s,
ret = hdb_create (context, &db, database);
if (ret)
krb5_err (context, 1, ret, "hdb_create: %s", database);
- ret = db->open (context, db, O_RDONLY, 0);
+ ret = db->hdb_open (context, db, O_RDONLY, 0);
if (ret)
krb5_err (context, 1, ret, "db->open");
- _krb5_put_int(buf, TELL_YOU_EVERYTHING, 4);
+ sp = krb5_storage_from_mem (buf, 4);
+ if (sp == NULL)
+ krb5_errx (context, 1, "krb5_storage_from_mem");
+ krb5_store_int32 (sp, TELL_YOU_EVERYTHING);
+ krb5_storage_free (sp);
data.data = buf;
data.length = 4;
@@ -287,26 +360,34 @@ send_complete (krb5_context context, slave *s,
if (ret) {
krb5_warn (context, ret, "krb5_write_priv_message");
- slave_dead(s);
+ slave_dead(context, s);
return ret;
}
ret = hdb_foreach (context, db, 0, prop_one, s);
if (ret) {
krb5_warn (context, ret, "hdb_foreach");
- slave_dead(s);
+ slave_dead(context, s);
return ret;
}
- _krb5_put_int (buf, NOW_YOU_HAVE, 4);
- _krb5_put_int (buf + 4, current_version, 4);
+ (*db->hdb_close)(context, db);
+ (*db->hdb_destroy)(context, db);
+
+ sp = krb5_storage_from_mem (buf, 8);
+ if (sp == NULL)
+ krb5_errx (context, 1, "krb5_storage_from_mem");
+ krb5_store_int32 (sp, NOW_YOU_HAVE);
+ krb5_store_int32 (sp, current_version);
+ krb5_storage_free (sp);
+
data.length = 8;
s->version = current_version;
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
if (ret) {
- slave_dead(s);
+ slave_dead(context, s);
krb5_warn (context, ret, "krb5_write_priv_message");
return ret;
}
@@ -317,59 +398,132 @@ send_complete (krb5_context context, slave *s,
}
static int
+send_are_you_there (krb5_context context, slave *s)
+{
+ krb5_storage *sp;
+ krb5_data data;
+ char buf[4];
+ int ret;
+
+ if (s->flags & (SLAVE_F_DEAD|SLAVE_F_AYT))
+ return 0;
+
+ s->flags |= SLAVE_F_AYT;
+
+ data.data = buf;
+ data.length = 4;
+
+ sp = krb5_storage_from_mem (buf, 4);
+ if (sp == NULL) {
+ krb5_warnx (context, "are_you_there: krb5_data_alloc");
+ slave_dead(context, s);
+ return 1;
+ }
+ krb5_store_int32 (sp, ARE_YOU_THERE);
+ krb5_storage_free (sp);
+
+ ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
+
+ if (ret) {
+ krb5_warn (context, ret, "are_you_there: krb5_write_priv_message");
+ slave_dead(context, s);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
send_diffs (krb5_context context, slave *s, int log_fd,
- const char *database, u_int32_t current_version)
+ const char *database, uint32_t current_version)
{
krb5_storage *sp;
- u_int32_t ver;
+ uint32_t ver;
time_t timestamp;
enum kadm_ops op;
- u_int32_t len;
+ uint32_t len;
off_t right, left;
krb5_data data;
int ret = 0;
- if (s->version == current_version)
+ if (s->version == current_version) {
+ krb5_warnx(context, "slave %s in sync already at version %ld",
+ s->name, (long)s->version);
return 0;
+ }
if (s->flags & SLAVE_F_DEAD)
return 0;
+ /* if slave is a fresh client, starting over */
+ if (s->version == 0) {
+ krb5_warnx(context, "sending complete log to fresh slave %s",
+ s->name);
+ return send_complete (context, s, database, current_version);
+ }
+
sp = kadm5_log_goto_end (log_fd);
right = krb5_storage_seek(sp, 0, SEEK_CUR);
for (;;) {
- if (kadm5_log_previous (sp, &ver, &timestamp, &op, &len))
- abort ();
+ ret = kadm5_log_previous (context, sp, &ver, &timestamp, &op, &len);
+ if (ret)
+ krb5_err(context, 1, ret,
+ "send_diffs: failed to find previous entry");
left = krb5_storage_seek(sp, -16, SEEK_CUR);
if (ver == s->version)
return 0;
if (ver == s->version + 1)
break;
- if (left == 0)
+ if (left == 0) {
+ krb5_warnx(context,
+ "slave %s (version %lu) out of sync with master "
+ "(first version in log %lu), sending complete database",
+ s->name, (unsigned long)s->version, (unsigned long)ver);
return send_complete (context, s, database, current_version);
+ }
+ }
+
+ krb5_warnx(context,
+ "syncing slave %s from version %lu to version %lu",
+ s->name, (unsigned long)s->version,
+ (unsigned long)current_version);
+
+ ret = krb5_data_alloc (&data, right - left + 4);
+ if (ret) {
+ krb5_warn (context, ret, "send_diffs: krb5_data_alloc");
+ slave_dead(context, s);
+ return 1;
}
- krb5_data_alloc (&data, right - left + 4);
krb5_storage_read (sp, (char *)data.data + 4, data.length - 4);
krb5_storage_free(sp);
- _krb5_put_int(data.data, FOR_YOU, 4);
+ sp = krb5_storage_from_data (&data);
+ if (sp == NULL) {
+ krb5_warnx (context, "send_diffs: krb5_storage_from_data");
+ slave_dead(context, s);
+ return 1;
+ }
+ krb5_store_int32 (sp, FOR_YOU);
+ krb5_storage_free(sp);
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
krb5_data_free(&data);
if (ret) {
- krb5_warn (context, ret, "krb5_write_priv_message");
- slave_dead(s);
+ krb5_warn (context, ret, "send_diffs: krb5_write_priv_message");
+ slave_dead(context, s);
return 1;
}
slave_seen(s);
+ s->version = current_version;
+
return 0;
}
static int
process_msg (krb5_context context, slave *s, int log_fd,
- const char *database, u_int32_t current_version)
+ const char *database, uint32_t current_version)
{
int ret = 0;
krb5_data out;
@@ -383,13 +537,42 @@ process_msg (krb5_context context, slave *s, int log_fd,
}
sp = krb5_storage_from_mem (out.data, out.length);
- krb5_ret_int32 (sp, &tmp);
+ if (sp == NULL) {
+ krb5_warnx (context, "process_msg: no memory");
+ krb5_data_free (&out);
+ return 1;
+ }
+ if (krb5_ret_int32 (sp, &tmp) != 0) {
+ krb5_warnx (context, "process_msg: client send too short command");
+ krb5_data_free (&out);
+ return 1;
+ }
switch (tmp) {
case I_HAVE :
- krb5_ret_int32 (sp, &tmp);
- s->version = tmp;
- ret = send_diffs (context, s, log_fd, database, current_version);
+ ret = krb5_ret_int32 (sp, &tmp);
+ if (ret != 0) {
+ krb5_warnx (context, "process_msg: client send too I_HAVE data");
+ break;
+ }
+ /* new started slave that have old log */
+ if (s->version == 0 && tmp != 0) {
+ if (s->version < tmp) {
+ krb5_warnx (context, "Slave %s have later version the master "
+ "OUT OF SYNC", s->name);
+ } else {
+ s->version = tmp;
+ }
+ }
+ if (tmp < s->version) {
+ krb5_warnx (context, "Slave claims to not have "
+ "version we already sent to it");
+ } else {
+ ret = send_diffs (context, s, log_fd, database, current_version);
+ }
+ break;
+ case I_AM_HERE :
break;
+ case ARE_YOU_THERE:
case FOR_YOU :
default :
krb5_warnx (context, "Ignoring command %d", tmp);
@@ -409,20 +592,60 @@ process_msg (krb5_context context, slave *s, int log_fd,
#define SLAVE_STATUS "Status"
#define SLAVE_SEEN "Last Seen"
+static FILE *
+open_stats(krb5_context context)
+{
+ char *statfile = NULL;
+ const char *fn;
+ FILE *f;
+
+ if (slave_stats_file)
+ fn = slave_stats_file;
+ else {
+ asprintf(&statfile, "%s/slaves-stats", hdb_db_dir(context));
+ fn = krb5_config_get_string_default(context,
+ NULL,
+ statfile,
+ "kdc",
+ "iprop-stats",
+ NULL);
+ }
+ f = fopen(fn, "w");
+ if (statfile)
+ free(statfile);
+
+ return f;
+}
+
+static void
+write_master_down(krb5_context context)
+{
+ char str[100];
+ time_t t = time(NULL);
+ FILE *fp;
+
+ fp = open_stats(context);
+ if (fp == NULL)
+ return;
+ krb5_format_time(context, t, str, sizeof(str), TRUE);
+ fprintf(fp, "master down at %s\n", str);
+
+ fclose(fp);
+}
+
static void
-write_stats(krb5_context context, slave *slaves, u_int32_t current_version)
+write_stats(krb5_context context, slave *slaves, uint32_t current_version)
{
char str[100];
rtbl_t tbl;
time_t t = time(NULL);
FILE *fp;
- fp = fopen(slave_stats_file, "w");
+ fp = open_stats(context);
if (fp == NULL)
return;
- strftime(str, sizeof(str), "%Y-%m-%d %H:%M:%S",
- localtime(&t));
+ krb5_format_time(context, t, str, sizeof(str), TRUE);
fprintf(fp, "Status for slaves, last updated: %s\n\n", str);
fprintf(fp, "Master version: %lu\n\n", (unsigned long)current_version);
@@ -463,9 +686,7 @@ write_stats(krb5_context context, slave *slaves, u_int32_t current_version)
else
rtbl_add_column_entry(tbl, SLAVE_STATUS, "Up");
- if (strftime(str, sizeof(str), "%Y-%m-%d %H:%M:%S %Z",
- localtime(&slaves->seen)) == 0)
- strlcpy(str, "Unknown time", sizeof(str));
+ ret = krb5_format_time(context, slaves->seen, str, sizeof(str), TRUE);
rtbl_add_column_entry(tbl, SLAVE_SEEN, str);
slaves = slaves->next;
@@ -483,13 +704,28 @@ static int version_flag;
static int help_flag;
static char *keytab_str = "HDB:";
static char *database;
+static char *config_file;
+static char *port_str;
+static int detach_from_console = 0;
static struct getargs args[] = {
+ { "config-file", 'c', arg_string, &config_file },
{ "realm", 'r', arg_string, &realm },
{ "keytab", 'k', arg_string, &keytab_str,
"keytab to get authentication from", "kspec" },
{ "database", 'd', arg_string, &database, "database", "file"},
- { "slave-stats-file", 0, arg_string, &slave_stats_file, "file"},
+ { "slave-stats-file", 0, arg_string, &slave_stats_file,
+ "file for slave status information", "file"},
+ { "time-missing", 0, arg_string, &slave_time_missing,
+ "time before slave is polled for presence", "time"},
+ { "time-gone", 0, arg_string, &slave_time_gone,
+ "time of inactivity after which a slave is considered gone", "time"},
+ { "port", 0, arg_string, &port_str,
+ "port ipropd will listen to", "port"},
+ { "detach", 0, arg_flag, &detach_from_console,
+ "detach from console" },
+ { "hostname", 0, arg_string, &master_hostname,
+ "hostname of master (if not same as hostname)", "hostname" },
{ "version", 0, arg_flag, &version_flag },
{ "help", 0, arg_flag, &help_flag }
};
@@ -506,11 +742,12 @@ main(int argc, char **argv)
int signal_fd, listen_fd;
int log_fd;
slave *slaves = NULL;
- u_int32_t current_version, old_version = 0;
+ uint32_t current_version = 0, old_version = 0;
krb5_keytab keytab;
- int optind;
+ int optidx;
+ char **files;
- optind = krb5_program_setup(&context, argc, argv, args, num_args, NULL);
+ optidx = krb5_program_setup(&context, argc, argv, args, num_args, NULL);
if(help_flag)
krb5_std_usage(0, args, num_args);
@@ -519,6 +756,32 @@ main(int argc, char **argv)
exit(0);
}
+ setup_signal();
+
+ if (config_file == NULL) {
+ asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
+ if (config_file == NULL)
+ errx(1, "out of memory");
+ }
+
+ ret = krb5_prepend_config_files_default(config_file, &files);
+ if (ret)
+ krb5_err(context, 1, ret, "getting configuration files");
+
+ ret = krb5_set_config_files(context, files);
+ krb5_free_config_files(files);
+ if (ret)
+ krb5_err(context, 1, ret, "reading configuration files");
+
+ time_before_gone = parse_time (slave_time_gone, "s");
+ if (time_before_gone < 0)
+ krb5_errx (context, 1, "couldn't parse time: %s", slave_time_gone);
+ time_before_missing = parse_time (slave_time_missing, "s");
+ if (time_before_missing < 0)
+ krb5_errx (context, 1, "couldn't parse time: %s", slave_time_missing);
+
+ if (detach_from_console)
+ daemon(0, 0);
pidfile (NULL);
krb5_openlog (context, "ipropd-master", &log_facility);
krb5_set_warn_dest(context, log_facility);
@@ -553,16 +816,19 @@ main(int argc, char **argv)
server_context->log_context.log_file);
signal_fd = make_signal_socket (context);
- listen_fd = make_listen_socket (context);
+ listen_fd = make_listen_socket (context, port_str);
- signal (SIGPIPE, SIG_IGN);
+ kadm5_log_get_version_fd (log_fd, &current_version);
- for (;;) {
+ krb5_warnx(context, "ipropd-master started at version: %lu",
+ (unsigned long)current_version);
+
+ while(exit_flag == 0){
slave *p;
fd_set readset;
int max_fd = 0;
struct timeval to = {30, 0};
- u_int32_t vers;
+ uint32_t vers;
if (signal_fd >= FD_SETSIZE || listen_fd >= FD_SETSIZE)
krb5_errx (context, 1, "fd too large");
@@ -593,12 +859,17 @@ main(int argc, char **argv)
old_version = current_version;
kadm5_log_get_version_fd (log_fd, &current_version);
- if (current_version > old_version)
+ if (current_version > old_version) {
+ krb5_warnx(context,
+ "Missed a signal, updating slaves %lu to %lu",
+ (unsigned long)old_version,
+ (unsigned long)current_version);
for (p = slaves; p != NULL; p = p->next) {
if (p->flags & SLAVE_F_DEAD)
continue;
send_diffs (context, p, log_fd, database, current_version);
}
+ }
}
if (ret && FD_ISSET(signal_fd, &readset)) {
@@ -611,28 +882,56 @@ main(int argc, char **argv)
continue;
}
--ret;
+ assert(ret >= 0);
old_version = current_version;
kadm5_log_get_version_fd (log_fd, &current_version);
- for (p = slaves; p != NULL; p = p->next)
- send_diffs (context, p, log_fd, database, current_version);
- }
+ if (current_version > old_version) {
+ krb5_warnx(context,
+ "Got a signal, updating slaves %lu to %lu",
+ (unsigned long)old_version,
+ (unsigned long)current_version);
+ for (p = slaves; p != NULL; p = p->next)
+ send_diffs (context, p, log_fd, database, current_version);
+ } else {
+ krb5_warnx(context,
+ "Got a signal, but no update in log version %lu",
+ (unsigned long)current_version);
+ }
+ }
- for(p = slaves; ret && p != NULL; p = p->next) {
+ for(p = slaves; p != NULL; p = p->next) {
if (p->flags & SLAVE_F_DEAD)
- continue;
- if (FD_ISSET(p->fd, &readset)) {
+ continue;
+ if (ret && FD_ISSET(p->fd, &readset)) {
--ret;
+ assert(ret >= 0);
if(process_msg (context, p, log_fd, database, current_version))
- slave_dead(p);
+ slave_dead(context, p);
+ } else if (slave_gone_p (p))
+ slave_dead(context, p);
+ else if (slave_missing_p (p)) {
+ krb5_warnx(context, "slave %s missing, sending AYT", p->name);
+ send_are_you_there (context, p);
}
}
if (ret && FD_ISSET(listen_fd, &readset)) {
add_slave (context, keytab, &slaves, listen_fd);
--ret;
+ assert(ret >= 0);
}
write_stats(context, slaves, current_version);
}
+ if(exit_flag == SIGXCPU)
+ krb5_warnx(context, "%s CPU time limit exceeded", getprogname());
+ else if(exit_flag == SIGINT || exit_flag == SIGTERM)
+ krb5_warnx(context, "%s terminated", getprogname());
+ else
+ krb5_warnx(context, "%s unexpected exit reason: %d",
+ getprogname(), exit_flag);
+
+ write_master_down(context);
+
return 0;
}
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