diff options
Diffstat (limited to 'crypto/heimdal/lib/kadm5/ipropd_master.c')
| -rw-r--r-- | crypto/heimdal/lib/kadm5/ipropd_master.c | 937 |
1 files changed, 0 insertions, 937 deletions
diff --git a/crypto/heimdal/lib/kadm5/ipropd_master.c b/crypto/heimdal/lib/kadm5/ipropd_master.c deleted file mode 100644 index bd8f71f..0000000 --- a/crypto/heimdal/lib/kadm5/ipropd_master.c +++ /dev/null @@ -1,937 +0,0 @@ -/* - * Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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. - */ - -#include "iprop.h" -#include <rtbl.h> - -RCSID("$Id: ipropd_master.c 22211 2007-12-07 19:27:27Z lha $"); - -static krb5_log_facility *log_facility; - -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, 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); - return fd; -} - -static int -make_listen_socket (krb5_context context, const char *port_str) -{ - int fd; - int one = 1; - struct sockaddr_in addr; - - fd = socket (AF_INET, SOCK_STREAM, 0); - if (fd < 0) - krb5_err (context, 1, errno, "socket AF_INET"); - setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(one)); - memset (&addr, 0, sizeof(addr)); - addr.sin_family = AF_INET; - - 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) - krb5_err (context, 1, errno, "listen"); - return fd; -} - -struct slave { - int fd; - struct sockaddr_in addr; - char *name; - krb5_auth_context ac; - uint32_t version; - time_t seen; - unsigned long flags; -#define SLAVE_F_DEAD 0x1 -#define SLAVE_F_AYT 0x2 - struct slave *next; -}; - -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)); - - 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) { - buf[strcspn(buf, "\r\n")] = '\0'; - if (strcmp (buf, name) == 0) { - ret = 0; - break; - } - } - fclose (fp); - return ret; -} - -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(krb5_context context, slave *s) -{ - krb5_warnx(context, "slave %s dead", s->name); - - if (s->fd >= 0) { - close (s->fd); - s->fd = -1; - } - s->flags |= SLAVE_F_DEAD; - slave_seen(s); -} - -static void -remove_slave (krb5_context context, slave *s, slave **root) -{ - slave **p; - - if (s->fd >= 0) - close (s->fd); - if (s->name) - free (s->name); - if (s->ac) - krb5_auth_con_free (context, s->ac); - - for (p = root; *p; p = &(*p)->next) - if (*p == s) { - *p = s->next; - break; - } - free (s); -} - -static void -add_slave (krb5_context context, krb5_keytab keytab, slave **root, int fd) -{ - krb5_principal server; - krb5_error_code ret; - slave *s; - socklen_t addr_len; - krb5_ticket *ticket = NULL; - char hostname[128]; - - s = malloc(sizeof(*s)); - if (s == NULL) { - krb5_warnx (context, "add_slave: no memory"); - return; - } - s->name = NULL; - s->ac = NULL; - - addr_len = sizeof(s->addr); - s->fd = accept (fd, (struct sockaddr *)&s->addr, &addr_len); - if (s->fd < 0) { - krb5_warn (context, errno, "accept"); - goto error; - } - 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) { - krb5_warn (context, ret, "krb5_sname_to_principal"); - goto error; - } - - ret = krb5_recvauth (context, &s->ac, &s->fd, - IPROP_VERSION, server, 0, keytab, &ticket); - krb5_free_principal (context, server); - if (ret) { - krb5_warn (context, ret, "krb5_recvauth"); - goto error; - } - ret = krb5_unparse_name (context, ticket->client, &s->name); - if (ret) { - krb5_warn (context, ret, "krb5_unparse_name"); - goto error; - } - if (check_acl (context, s->name)) { - krb5_warnx (context, "%s not in acl", s->name); - goto error; - } - krb5_free_ticket (context, ticket); - ticket = NULL; - - { - slave *l = *root; - - while (l) { - if (strcmp(l->name, s->name) == 0) - break; - l = l->next; - } - if (l) { - if (l->flags & SLAVE_F_DEAD) { - remove_slave(context, l, root); - } else { - krb5_warnx (context, "second connection from %s", s->name); - goto error; - } - } - } - - krb5_warnx (context, "connection from %s", s->name); - - s->version = 0; - s->flags = 0; - slave_seen(s); - s->next = *root; - *root = s; - return; -error: - remove_slave(context, s, root); -} - -struct prop_context { - krb5_auth_context auth_context; - int fd; -}; - -static int -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 *s = (struct slave *)v; - - ret = hdb_entry2value (context, &entry->entry, &data); - if (ret) - return ret; - ret = krb5_data_realloc (&data, data.length + 4); - if (ret) { - krb5_data_free (&data); - return ret; - } - memmove ((char *)data.data + 4, data.data, data.length - 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, s->ac, &s->fd, &data); - krb5_data_free (&data); - return ret; -} - -static int -send_complete (krb5_context context, slave *s, - const char *database, uint32_t current_version) -{ - krb5_error_code ret; - krb5_storage *sp; - HDB *db; - krb5_data data; - char buf[8]; - - ret = hdb_create (context, &db, database); - if (ret) - krb5_err (context, 1, ret, "hdb_create: %s", database); - ret = db->hdb_open (context, db, O_RDONLY, 0); - if (ret) - krb5_err (context, 1, ret, "db->open"); - - 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; - - ret = krb5_write_priv_message(context, s->ac, &s->fd, &data); - - if (ret) { - krb5_warn (context, ret, "krb5_write_priv_message"); - 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(context, s); - return ret; - } - - (*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(context, s); - krb5_warn (context, ret, "krb5_write_priv_message"); - return ret; - } - - slave_seen(s); - - return 0; -} - -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, uint32_t current_version) -{ - krb5_storage *sp; - uint32_t ver; - time_t timestamp; - enum kadm_ops op; - uint32_t len; - off_t right, left; - krb5_data data; - int ret = 0; - - 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 (;;) { - ret = kadm5_log_previous (context, sp, &ver, ×tamp, &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) { - 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_storage_read (sp, (char *)data.data + 4, data.length - 4); - krb5_storage_free(sp); - - 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, "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, uint32_t current_version) -{ - int ret = 0; - krb5_data out; - krb5_storage *sp; - int32_t tmp; - - ret = krb5_read_priv_message(context, s->ac, &s->fd, &out); - if(ret) { - krb5_warn (context, ret, "error reading message from %s", s->name); - return 1; - } - - sp = krb5_storage_from_mem (out.data, out.length); - 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 : - 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); - break; - } - - krb5_data_free (&out); - - slave_seen(s); - - return ret; -} - -#define SLAVE_NAME "Name" -#define SLAVE_ADDRESS "Address" -#define SLAVE_VERSION "Version" -#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, uint32_t current_version) -{ - char str[100]; - rtbl_t tbl; - 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, "Status for slaves, last updated: %s\n\n", str); - - fprintf(fp, "Master version: %lu\n\n", (unsigned long)current_version); - - tbl = rtbl_create(); - if (tbl == NULL) { - fclose(fp); - return; - } - - rtbl_add_column(tbl, SLAVE_NAME, 0); - rtbl_add_column(tbl, SLAVE_ADDRESS, 0); - rtbl_add_column(tbl, SLAVE_VERSION, RTBL_ALIGN_RIGHT); - rtbl_add_column(tbl, SLAVE_STATUS, 0); - rtbl_add_column(tbl, SLAVE_SEEN, 0); - - rtbl_set_prefix(tbl, " "); - rtbl_set_column_prefix(tbl, SLAVE_NAME, ""); - - while (slaves) { - krb5_address addr; - krb5_error_code ret; - rtbl_add_column_entry(tbl, SLAVE_NAME, slaves->name); - ret = krb5_sockaddr2address (context, - (struct sockaddr*)&slaves->addr, &addr); - if(ret == 0) { - krb5_print_address(&addr, str, sizeof(str), NULL); - krb5_free_address(context, &addr); - rtbl_add_column_entry(tbl, SLAVE_ADDRESS, str); - } else - rtbl_add_column_entry(tbl, SLAVE_ADDRESS, "<unknown>"); - - snprintf(str, sizeof(str), "%u", (unsigned)slaves->version); - rtbl_add_column_entry(tbl, SLAVE_VERSION, str); - - if (slaves->flags & SLAVE_F_DEAD) - rtbl_add_column_entry(tbl, SLAVE_STATUS, "Down"); - else - rtbl_add_column_entry(tbl, SLAVE_STATUS, "Up"); - - ret = krb5_format_time(context, slaves->seen, str, sizeof(str), TRUE); - rtbl_add_column_entry(tbl, SLAVE_SEEN, str); - - slaves = slaves->next; - } - - rtbl_format(tbl, fp); - rtbl_destroy(tbl); - - fclose(fp); -} - - -static char *realm; -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 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 } -}; -static int num_args = sizeof(args) / sizeof(args[0]); - -int -main(int argc, char **argv) -{ - krb5_error_code ret; - krb5_context context; - void *kadm_handle; - kadm5_server_context *server_context; - kadm5_config_params conf; - int signal_fd, listen_fd; - int log_fd; - slave *slaves = NULL; - uint32_t current_version = 0, old_version = 0; - krb5_keytab keytab; - int optidx; - char **files; - - optidx = krb5_program_setup(&context, argc, argv, args, num_args, NULL); - - if(help_flag) - krb5_std_usage(0, args, num_args); - if(version_flag) { - print_version(NULL); - 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); - - ret = krb5_kt_register(context, &hdb_kt_ops); - if(ret) - krb5_err(context, 1, ret, "krb5_kt_register"); - - ret = krb5_kt_resolve(context, keytab_str, &keytab); - if(ret) - krb5_err(context, 1, ret, "krb5_kt_resolve: %s", keytab_str); - - memset(&conf, 0, sizeof(conf)); - if(realm) { - conf.mask |= KADM5_CONFIG_REALM; - conf.realm = realm; - } - ret = kadm5_init_with_skey_ctx (context, - KADM5_ADMIN_SERVICE, - NULL, - KADM5_ADMIN_SERVICE, - &conf, 0, 0, - &kadm_handle); - if (ret) - krb5_err (context, 1, ret, "kadm5_init_with_password_ctx"); - - server_context = (kadm5_server_context *)kadm_handle; - - log_fd = open (server_context->log_context.log_file, O_RDONLY, 0); - if (log_fd < 0) - krb5_err (context, 1, errno, "open %s", - server_context->log_context.log_file); - - signal_fd = make_signal_socket (context); - listen_fd = make_listen_socket (context, port_str); - - kadm5_log_get_version_fd (log_fd, ¤t_version); - - 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}; - uint32_t vers; - - if (signal_fd >= FD_SETSIZE || listen_fd >= FD_SETSIZE) - krb5_errx (context, 1, "fd too large"); - - FD_ZERO(&readset); - FD_SET(signal_fd, &readset); - max_fd = max(max_fd, signal_fd); - FD_SET(listen_fd, &readset); - max_fd = max(max_fd, listen_fd); - - for (p = slaves; p != NULL; p = p->next) { - if (p->flags & SLAVE_F_DEAD) - continue; - FD_SET(p->fd, &readset); - max_fd = max(max_fd, p->fd); - } - - ret = select (max_fd + 1, - &readset, NULL, NULL, &to); - if (ret < 0) { - if (errno == EINTR) - continue; - else - krb5_err (context, 1, errno, "select"); - } - - if (ret == 0) { - old_version = current_version; - kadm5_log_get_version_fd (log_fd, ¤t_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)) { - struct sockaddr_un peer_addr; - socklen_t peer_len = sizeof(peer_addr); - - if(recvfrom(signal_fd, (void *)&vers, sizeof(vers), 0, - (struct sockaddr *)&peer_addr, &peer_len) < 0) { - krb5_warn (context, errno, "recvfrom"); - continue; - } - --ret; - assert(ret >= 0); - old_version = current_version; - kadm5_log_get_version_fd (log_fd, ¤t_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; p != NULL; p = p->next) { - if (p->flags & SLAVE_F_DEAD) - continue; - if (ret && FD_ISSET(p->fd, &readset)) { - --ret; - assert(ret >= 0); - if(process_msg (context, p, log_fd, database, current_version)) - 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; -} |
