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1280 lines
35 KiB
1280 lines
35 KiB
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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(c) 2012 Timothy Pearson
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(c) 2012 Raptor Engineering
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*/
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#define _GNU_SOURCE
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#define HAVE_STDINT_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <pwd.h>
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#include <grp.h>
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#include <time.h>
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#define list_delete mysql_list_delete
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#include <mysql/mysql.h>
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#undef list_delete
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#include "list.h"
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#include "libraptorsmiface.h"
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#define STATISTICS_SERVER_START_EVENT 0
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#define STATISTICS_SERVER_STOP_EVENT 1
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#define STATISTICS_NEW_CONNECTION_EVENT 2
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#define STATISTICS_CONNECTION_STATUS_EVENT 3
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#define STATISTICS_DISCONNECTION_EVENT 4
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#define RAPTORSMIFACE_CFG_DATABASE "Database"
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#define RAPTORSMIFACE_CFG_DATABASE_SERVER "Server"
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#define RAPTORSMIFACE_CFG_DATABASE_NAME "Database"
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#define RAPTORSMIFACE_CFG_DATABASE_USER "User"
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#define RAPTORSMIFACE_CFG_DATABASE_PASSWORD "Password"
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#define RAPTORSMIFACE_CFG_DATABASE_SCHEMA_VERSION 1
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char *server = NULL;
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char *user = NULL;
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char *password = NULL;
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char *database = NULL;
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char *local_machine_fqdn = NULL;
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void dprint(const char *fmt, ...)
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{
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va_list argp;
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va_start(argp, fmt);
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#if 0
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vprintf(fmt, argp);
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#else
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char debug[512];
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vsprintf(debug, fmt, argp);
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FILE *fp = fopen("/raptorsmiface.debug", "a");
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if (fp != NULL)
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{
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fputs(debug, fp);
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fclose(fp);
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}
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#endif
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va_end(argp);
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}
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void raptorsmiface_config_read_database(int file, struct list* param_n, struct list* param_v) {
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int i;
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char* buf;
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char* temp_buf;
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// Set defaults
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if (!server) server = strdup("localhost");
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if (!user) user = strdup("remotelab");
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if (!password) password = strdup("");
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if (!database) database = strdup("remotelab_sm");
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list_clear(param_v);
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list_clear(param_n);
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file_read_section(file, RAPTORSMIFACE_CFG_DATABASE, param_n, param_v);
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for (i = 0; i < param_n->count; i++) {
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buf = (char*)list_get_item(param_n, i);
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if (0 == g_strcasecmp(buf, RAPTORSMIFACE_CFG_DATABASE_SERVER)) {
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free(server);
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server = strdup((char*)list_get_item(param_v, i));
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}
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if (0 == g_strcasecmp(buf, RAPTORSMIFACE_CFG_DATABASE_NAME)) {
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free(database);
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database = strdup((char*)list_get_item(param_v, i));
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}
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if (0 == g_strcasecmp(buf, RAPTORSMIFACE_CFG_DATABASE_USER)) {
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free(user);
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user = strdup((char*)list_get_item(param_v, i));
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}
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if (0 == g_strcasecmp(buf, RAPTORSMIFACE_CFG_DATABASE_PASSWORD)) {
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free(password);
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password = strdup((char*)list_get_item(param_v, i));
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}
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}
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g_printf("raptorsmiface configuration:\r\n");
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g_printf("\tServer: %s\r\n", server);
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g_printf("\tDatabase: %s\r\n", database);
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g_printf("\tUser: %s\r\n", user);
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}
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void read_ini_configuration() {
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int fd;
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struct list* sec;
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struct list* param_n;
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struct list* param_v;
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/* set global variables */
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local_machine_fqdn = raptor_sm_get_local_machine_fqdn();
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/* open configuration file */
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char cfg_file[256];
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g_snprintf(cfg_file, 255, "%s/xrdp.ini", XRDP_CFG_PATH);
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fd = g_file_open(cfg_file);
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if (-1 == fd) {
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dprint("[ERROR] Unable to open configuration file [%s]", cfg_file);
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return;
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}
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sec = list_create();
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sec->auto_free = 1;
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file_read_sections(fd, sec);
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param_n = list_create();
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param_n->auto_free = 1;
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param_v = list_create();
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param_v->auto_free = 1;
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/* read database config */
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raptorsmiface_config_read_database(fd, param_n, param_v);
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/* cleanup */
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list_delete(sec);
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list_delete(param_v);
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list_delete(param_n);
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g_file_close(fd);
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}
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MYSQL * connect_if_needed() {
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MYSQL *conn = mysql_init(NULL);
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read_ini_configuration();
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if (!mysql_real_connect(conn, server, user, password, database, 0, NULL, 0)) {
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dprint("[ERROR] MySQL connection FAILED [%s]\n\r", mysql_error(conn));
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conn = 0;
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}
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else {
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// Check schema version
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char* query;
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MYSQL_RES *res;
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MYSQL_ROW row;
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asprintf(&query, "SELECT value FROM dbschema WHERE skey='revision'");
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if (mysql_query_internal(conn, query)) {
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// Server error
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free(query);
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mysql_close(conn);
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dprint("[ERROR] MySQL connection FAILED [%s]\n\r", mysql_error(conn));
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conn = 0;
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}
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else {
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free(query);
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res = mysql_store_result(conn);
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if ((row = mysql_fetch_row(res)) == NULL) {
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dprint("[ERROR] Mandatory schema version key not found\n\r");
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conn = 0;
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}
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else if (!row[0]) {
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dprint("[ERROR] Mandatory schema version key not found\n\r");
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conn = 0;
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}
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else {
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int schema_version = atoi(row[0]);
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if (schema_version != RAPTORSMIFACE_CFG_DATABASE_SCHEMA_VERSION) {
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dprint("[ERROR] Schema version key mismatch (%d:%d)\n\r", schema_version, RAPTORSMIFACE_CFG_DATABASE_SCHEMA_VERSION);
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conn = 0;
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}
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}
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}
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}
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return conn;
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}
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char* get_mysql_escaped_string(MYSQL *sqlcn, char* rawstr) {
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unsigned int minlen = strlen(rawstr);
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unsigned int maxlen = ((minlen*2)+1);
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char* escstr = malloc(maxlen*sizeof(char));
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mysql_real_escape_string(sqlcn, escstr, rawstr, minlen);
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return escstr;
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}
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char mutex;
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int mysql_query_internal(MYSQL *conn, const char * query) {
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// For some reason this can hang rather badly
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// It might be related to concurrent access to the same conn object though
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return mysql_query(conn, query);
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}
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char* get_group_for_user(char* username) {
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struct passwd* pwd;
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pwd = getpwnam(username);
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if (!pwd) {
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return NULL;
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}
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gid_t groupid = pwd->pw_gid;
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struct group* primarygroup;
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primarygroup = getgrgid(groupid);
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if (!primarygroup) {
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return NULL;
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}
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return strdup(primarygroup->gr_name);
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}
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int raptor_sm_get_uid_for_user(char* username) {
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struct passwd *pwd = calloc(1, sizeof(struct passwd));
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if (pwd == NULL) {
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return -1;
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}
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size_t buffer_len = sysconf(_SC_GETPW_R_SIZE_MAX) * sizeof(char);
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char *buffer = malloc(buffer_len);
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if (buffer == NULL) {
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return -2;
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}
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getpwnam_r(username, pwd, buffer, buffer_len, &pwd);
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if (pwd == NULL) {
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return -3;
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}
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uid_t uid = pwd->pw_uid;
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free(buffer);
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free(pwd);
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return uid;
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}
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char raptor_sm_deallocate_session(char* username) {
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MYSQL_RES *res;
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MYSQL_ROW row;
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MYSQL_RES *svr_res;
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MYSQL_ROW svr_row;
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MYSQL_RES *cnt_res;
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MYSQL_ROW cnt_row;
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char* query;
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MYSQL *conn = connect_if_needed();
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if (!conn) {
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return 1;
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}
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int display = raptor_sm_get_display_for_username(username);
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char* hostname = raptor_sm_get_hostname_for_username(username, false);
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pid_t serverpid = raptor_sm_get_pid_for_username(username, RAPTOR_SM_SERVER_PID_FIELD);
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if (serverpid >= 0) {
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// Verify non-existence of PID on remote server before removing session information from the database
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char* ip = raptor_sm_get_ip_for_hostname(hostname, 0);
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char* command_string;
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asprintf(&command_string, "ssh root@%s \'ps -p %d | grep %d\'", ip, serverpid, serverpid);
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FILE *fp;
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char output[1024];
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// Open the command for reading
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fp = popen(command_string, "r");
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if (fp == NULL) {
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free(ip);
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mysql_close(conn);
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return -1;
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}
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// Read the output a line at a time
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fgets(output, sizeof(output)-1, fp);
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// Close output
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pclose(fp);
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free(command_string);
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free(ip);
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if (strcmp(output, "") != 0) {
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mysql_free_result(res);
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mysql_close(conn);
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return 0;
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}
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}
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#ifndef RAPTOR_SM_DISABLE_KERBEROS
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char* command_string;
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char* ip = raptor_sm_get_ip_for_hostname(hostname, 0);
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asprintf(&command_string, "ssh root@%s \'rm -f /tmp/krb5cc_%d\'", ip, raptor_sm_get_uid_for_user(username));
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dprint("Running command %s...\n\r", command_string);
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system(command_string);
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free(command_string);
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free(ip);
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#endif
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// Remove the user from the system
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char* safe_username = get_mysql_escaped_string(conn, username);
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asprintf(&query, "DELETE FROM sessions WHERE username='%s'", safe_username);
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free(safe_username);
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if (mysql_query_internal(conn, query)) {
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// Server error
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free(hostname);
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free(query);
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mysql_close(conn);
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return 2;
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}
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else {
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free(query);
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// Insert connection information into the statistics database
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char* safe_servername = get_mysql_escaped_string(conn, hostname);
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char* safe_username = get_mysql_escaped_string(conn, username);
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char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
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long long timestamp = time(NULL);
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asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid, username) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d', '%s')", timestamp, STATISTICS_DISCONNECTION_EVENT, safe_local_machine_fqdn, safe_servername, display, -1, safe_username);
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free(safe_servername);
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free(safe_username);
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free(safe_local_machine_fqdn);
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free(hostname);
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if (mysql_query_internal(conn, query)) {
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// Server error
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dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
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}
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free(query);
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mysql_close(conn);
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return 0;
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}
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}
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char* raptor_sm_allocate_session(char* username) {
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MYSQL_RES *res;
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MYSQL_ROW row;
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MYSQL_RES *svr_res;
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MYSQL_ROW svr_row;
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MYSQL_RES *per_res;
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MYSQL_ROW per_row;
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MYSQL_RES *cnt_res;
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MYSQL_ROW cnt_row;
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char* query;
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MYSQL *conn = connect_if_needed();
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if (!conn) {
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return strdup("ERROR");
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}
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// Verify that this user is not already on the system
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char* safe_username = get_mysql_escaped_string(conn, username);
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asprintf(&query, "SELECT servername FROM sessions WHERE username='%s'", safe_username);
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free(safe_username);
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if (mysql_query_internal(conn, query)) {
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// Server error
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free(query);
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mysql_close(conn);
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return strdup("ERROR");
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}
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else {
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free(query);
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res = mysql_store_result(conn);
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if ((row = mysql_fetch_row(res)) == NULL) {
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// User is not on a system
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// Find the least utilized node
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if (mysql_query_internal(conn, "SELECT name FROM servers WHERE online='1'")) {
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// Server error
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mysql_free_result(res);
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mysql_close(conn);
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return strdup("ERROR");
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}
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else {
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svr_res = mysql_store_result(conn);
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// Get group for user
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char* groupname = get_group_for_user(username);
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if (!groupname) {
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return strdup("ERROR");
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}
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char* safe_groupname = get_mysql_escaped_string(conn, groupname);
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free(groupname);
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// Get the list of allowed nodes for this group
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asprintf(&query, "SELECT server FROM allowed_servers WHERE groupname='%s'", safe_groupname);
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free(safe_groupname);
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if (mysql_query_internal(conn, query)) {
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// Server error
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mysql_free_result(res);
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mysql_free_result(svr_res);
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mysql_close(conn);
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return strdup("ERROR");
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}
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else {
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per_res = mysql_store_result(conn);
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char* bestserver = strdup("");
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int bestusage = INT_MAX;
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while ((svr_row = mysql_fetch_row(svr_res)) != NULL) {
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// Am I allowed to use this server?
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bool can_use_server = false;
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while ((per_row = mysql_fetch_row(per_res)) != NULL) {
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if (strcmp(per_row[0], svr_row[0]) == 0) {
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can_use_server = true;
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}
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}
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mysql_data_seek(per_res, 0);
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if (can_use_server) {
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char* safe_servername = get_mysql_escaped_string(conn, svr_row[0]);
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asprintf(&query, "SELECT username FROM sessions WHERE servername='%s'", safe_servername);
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free(safe_servername);
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if (mysql_query_internal(conn, query)) {
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// Server error
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free(query);
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free(bestserver);
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mysql_free_result(res);
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mysql_free_result(svr_res);
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mysql_close(conn);
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return strdup("ERROR");
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}
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else {
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free(query);
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cnt_res = mysql_store_result(conn);
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int usagecount = 0;
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while ((cnt_row = mysql_fetch_row(cnt_res)) != NULL) {
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usagecount++;
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}
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mysql_free_result(cnt_res);
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if (usagecount < bestusage) {
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free(bestserver);
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bestserver = strdup(svr_row[0]);
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bestusage = usagecount;
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}
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}
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}
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}
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mysql_free_result(res);
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mysql_free_result(svr_res);
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mysql_free_result(per_res);
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if (strcmp(bestserver, "") != 0) {
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// Insert new information into the sessions database and set status to ALLOCATED
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char* safe_servername = get_mysql_escaped_string(conn, bestserver);
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char* safe_username = get_mysql_escaped_string(conn, username);
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char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
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asprintf(&query, "INSERT INTO sessions (username, arbiter, servername, state) VALUES ('%s', '%s', '%s', '%d')", safe_username, safe_local_machine_fqdn, safe_servername, SM_STATUS_ALLOCATED);
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free(safe_local_machine_fqdn);
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free(safe_servername);
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free(safe_username);
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if (mysql_query_internal(conn, query)) {
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// Server error
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free(query);
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mysql_close(conn);
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return strdup("ERROR");
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}
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else {
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free(query);
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// Insert connection information into the statistics database
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char* safe_servername = get_mysql_escaped_string(conn, bestserver);
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char* safe_username = get_mysql_escaped_string(conn, username);
|
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char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
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long long timestamp = time(NULL);
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asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid, username) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d', '%s')", timestamp, STATISTICS_NEW_CONNECTION_EVENT, safe_local_machine_fqdn, safe_servername, -1, SM_STATUS_ALLOCATED, safe_username);
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free(safe_local_machine_fqdn);
|
|
free(safe_servername);
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|
free(safe_username);
|
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if (mysql_query_internal(conn, query)) {
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// Server error
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dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
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}
|
|
free(query);
|
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|
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mysql_close(conn);
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return strdup(bestserver);
|
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}
|
|
}
|
|
else {
|
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// No usable server found!
|
|
mysql_close(conn);
|
|
return strdup("ERROR");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
char* ret = strdup(row[0]);
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
char* raptor_sm_get_local_machine_fqdn() {
|
|
struct addrinfo hints, *res;
|
|
int err;
|
|
|
|
char hostname[1024];
|
|
hostname[1023] = '\0';
|
|
gethostname(hostname, 1023);
|
|
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_flags = AI_CANONNAME;
|
|
|
|
if ((err = getaddrinfo(hostname, NULL, &hints, &res)) != 0) {
|
|
return strdup("");
|
|
}
|
|
|
|
char* ret = strdup(res->ai_canonname);
|
|
freeaddrinfo(res);
|
|
return ret;
|
|
}
|
|
|
|
char* raptor_sm_get_ip_for_hostname(char* hostname, char* error) {
|
|
struct addrinfo hints, *res;
|
|
struct in_addr addr;
|
|
int err;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_family = AF_INET;
|
|
|
|
if ((err = getaddrinfo(hostname, NULL, &hints, &res)) != 0) {
|
|
if (error) *error = 1;
|
|
return strdup("");
|
|
}
|
|
|
|
addr.s_addr = ((struct sockaddr_in *)(res->ai_addr))->sin_addr.s_addr;
|
|
|
|
char* ret = strdup(inet_ntoa(addr));
|
|
freeaddrinfo(res);
|
|
if (error) *error = 0;
|
|
return ret;
|
|
}
|
|
|
|
char* raptor_sm_get_hostname_for_username(char* username, bool create) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return strdup("SQLERR100");
|
|
}
|
|
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "SELECT servername FROM sessions WHERE username='%s'", safe_username);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return strdup("SQLERR101");
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
char* ret = strdup(row[0]);
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
// Nothing in the DB
|
|
mysql_free_result(res);
|
|
if (create) {
|
|
// Try to allocate a new session on a node
|
|
mysql_close(conn);
|
|
return raptor_sm_allocate_session(username);
|
|
}
|
|
else {
|
|
mysql_close(conn);
|
|
return strdup("");
|
|
}
|
|
}
|
|
}
|
|
|
|
char* raptor_sm_get_hostname_for_display(int display) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return strdup("SQLERR100");
|
|
}
|
|
|
|
asprintf(&query, "SELECT servername FROM sessions WHERE display='%d'", display);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return strdup("SQLERR101");
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
char* ret = strdup(row[0]);
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
// Nothing in the DB
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return strdup("");
|
|
}
|
|
}
|
|
|
|
char* raptor_sm_get_ip_for_username(char* username, bool create) {
|
|
char* hostname = raptor_sm_get_hostname_for_username(username, create);
|
|
char err;
|
|
char* ip = raptor_sm_get_ip_for_hostname(hostname, &err);
|
|
free(hostname);
|
|
if (err) {
|
|
raptor_sm_deallocate_session(username);
|
|
return strdup("ERROR");
|
|
}
|
|
return ip;
|
|
}
|
|
|
|
bool raptor_sm_sesslimit_reached(char* username) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return true;
|
|
}
|
|
|
|
// Respect maximum session number for the group for this user
|
|
int sesslimit = 0; // Default to denying all sessions
|
|
|
|
// Get group for user
|
|
char* groupname = get_group_for_user(username);
|
|
if (!groupname) {
|
|
return true;
|
|
}
|
|
char* safe_groupname = get_mysql_escaped_string(conn, groupname);
|
|
asprintf(&query, "SELECT sesslimit FROM groups WHERE groupname='%s'", safe_groupname);
|
|
free(safe_groupname);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(groupname);
|
|
free(query);
|
|
mysql_close(conn);
|
|
return true;
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
row = mysql_fetch_row(res);
|
|
if (row[0]) {
|
|
sesslimit = atoi(row[0]);
|
|
}
|
|
mysql_free_result(res);
|
|
}
|
|
|
|
// Figure out how many users are online from this group
|
|
int sesscount = 0;
|
|
asprintf(&query, "SELECT username FROM sessions WHERE state<>'%d'", SM_STATUS_ALLOCATED);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(groupname);
|
|
free(query);
|
|
mysql_close(conn);
|
|
return true;
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
char* test_groupname = get_group_for_user(row[0]);
|
|
if (!test_groupname) {
|
|
free(groupname);
|
|
return true;
|
|
}
|
|
if (strcmp(groupname, test_groupname) == 0) {
|
|
sesscount++;
|
|
}
|
|
free(test_groupname);
|
|
}
|
|
}
|
|
mysql_free_result(res);
|
|
|
|
if (sesscount < sesslimit) {
|
|
free(groupname);
|
|
mysql_close(conn);
|
|
return false;
|
|
}
|
|
dprint("[WARNING] Maximum session limit reached for group '%s'!\n", groupname);
|
|
free(groupname);
|
|
mysql_close(conn);
|
|
return true;
|
|
}
|
|
|
|
// We should never end up here!
|
|
free(groupname);
|
|
mysql_close(conn);
|
|
return true;
|
|
}
|
|
|
|
pid_t raptor_sm_run_remote_server(char* username, char *const argv[], char* dbfield, int display) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
if (strcmp(dbfield, RAPTOR_SM_SERVER_PID_FIELD) == 0) {
|
|
// Respect maximum session number for the group for this user
|
|
if (raptor_sm_sesslimit_reached(username)) {
|
|
mysql_close(conn);
|
|
return -5;
|
|
}
|
|
}
|
|
|
|
// Make sure a server is not already running for this user
|
|
// Return the existing PID if it is
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
if (strcmp(dbfield, RAPTOR_SM_SERVER_PID_FIELD) == 0) {
|
|
asprintf(&query, "SELECT %s,servername FROM sessions WHERE username='%s' AND state<>'%d'", dbfield, safe_username, SM_STATUS_ALLOCATED);
|
|
}
|
|
else {
|
|
asprintf(&query, "SELECT %s,servername FROM sessions WHERE username='%s'", dbfield, safe_username);
|
|
}
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
int ret = atoi(row[0]);
|
|
if (ret >= 0) {
|
|
// Verify existence of PID on remote server
|
|
dprint("Verifying process %d on %s...\n\r", ret, row[1]);
|
|
char* ip = raptor_sm_get_ip_for_hostname(row[1], 0);
|
|
char* command_string;
|
|
asprintf(&command_string, "ssh root@%s \'ps -p %d | grep %d\'", ip, ret, ret);
|
|
FILE *fp;
|
|
char output[1024];
|
|
// Open the command for reading
|
|
fp = popen(command_string, "r");
|
|
if (fp == NULL) {
|
|
free(ip);
|
|
mysql_close(conn);
|
|
return -1;
|
|
}
|
|
// Read the output a line at a time
|
|
fgets(output, sizeof(output)-1, fp);
|
|
// Close output
|
|
pclose(fp);
|
|
free(command_string);
|
|
free(ip);
|
|
dprint("...result was %s\n\r", output);
|
|
if (strcmp(output, "") != 0) {
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
mysql_free_result(res);
|
|
}
|
|
|
|
int i;
|
|
int n_commands;
|
|
|
|
n_commands = 0;
|
|
while (argv[n_commands] != NULL) {
|
|
n_commands++;
|
|
}
|
|
|
|
char* ipaddr = raptor_sm_get_ip_for_username(username, true);
|
|
|
|
// This is HORRIBLY inefficient
|
|
char* command_string = strdup("");
|
|
for (i=0; i<n_commands; i++) {
|
|
char* origstr = command_string;
|
|
asprintf(&command_string, "%s %s", origstr, argv[i]);
|
|
free(origstr);
|
|
}
|
|
char* origstr = command_string;
|
|
|
|
#ifndef RAPTOR_SM_DISABLE_KERBEROS
|
|
if (display >= 0) {
|
|
uid_t uid = raptor_sm_get_uid_for_user(username);
|
|
asprintf(&command_string, "rsync -a /tmp/krb5cc_%d root@%s:/tmp/krb5cc_%d", uid, ipaddr, uid);
|
|
dprint("Running command %s...\n\r", command_string);
|
|
system(command_string);
|
|
free(command_string);
|
|
asprintf(&command_string, "rm -f /tmp/krb5cc_%d", uid);
|
|
dprint("Running command %s...\n\r", command_string);
|
|
system(command_string);
|
|
free(command_string);
|
|
}
|
|
#endif
|
|
|
|
#ifndef RAPTOR_SM_DISABLE_PULSEAUDIO
|
|
if (display >= 0) {
|
|
asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && export PULSE_SERVER=tcp:%s:%d && pulseaudio -D --load=\\\"module-native-protocol-tcp listen=0.0.0.0 auth-ip-acl=%s port=%d\\\"\' &> /dev/null\" &", ipaddr, username, display, ipaddr, (RAPTOR_SM_BASE_PULSEAUDIO_PORT+display), RAPTOR_SM_MANAGEMENT_SERVER_IP_NETRANGE, (RAPTOR_SM_BASE_PULSEAUDIO_PORT+display));
|
|
dprint("Running command %s...\n\r", command_string);
|
|
system(command_string);
|
|
free(command_string);
|
|
}
|
|
#endif
|
|
|
|
if (strcmp(dbfield, RAPTOR_SM_SERVER_PID_FIELD) == 0) {
|
|
asprintf(&command_string, "ssh root@%s \'%s & echo $! &\'", ipaddr, origstr);
|
|
}
|
|
else {
|
|
#if RAPTOR_SM_DISABLE_PULSEAUDIO
|
|
asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && %s\' &> /dev/null & echo \\$!\"", ipaddr, username, display, origstr);
|
|
#else
|
|
//asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && export PULSE_SERVER=tcp:%s:%d && %s\' &> /dev/null & echo \\$!\"", ipaddr, username, display, ipaddr, (RAPTOR_SM_BASE_PULSEAUDIO_PORT+display), origstr);
|
|
asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && export PULSE_SERVER=tcp:%s:%d && %s\' &> /var/log/%s_wm_session.log & echo \\$!\"", ipaddr, username, display, ipaddr, (RAPTOR_SM_BASE_PULSEAUDIO_PORT+display), origstr, username);
|
|
#endif
|
|
}
|
|
dprint("Running command %s...\n\r", command_string);
|
|
free(origstr);
|
|
free(ipaddr);
|
|
|
|
FILE *fp;
|
|
char output[1024];
|
|
|
|
// Open the command for reading
|
|
fp = popen(command_string, "r");
|
|
if (fp == NULL) {
|
|
mysql_close(conn);
|
|
return -1;
|
|
}
|
|
|
|
// Read the output a line at a time
|
|
fgets(output, sizeof(output)-1, fp);
|
|
|
|
// Close output
|
|
pclose(fp);
|
|
|
|
free(command_string);
|
|
|
|
mysql_close(conn);
|
|
return atoi(output);
|
|
}
|
|
|
|
pid_t raptor_sm_get_pid_for_username(char* username, char* dbfield) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Make sure a server is not already running for this user
|
|
// Return the existing PID if it is
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "SELECT %s FROM sessions WHERE username='%s'", dbfield, safe_username);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
int ret = atoi(row[0]);
|
|
if (ret >= 0) {
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
mysql_free_result(res);
|
|
}
|
|
|
|
mysql_close(conn);
|
|
return -3;
|
|
}
|
|
|
|
int raptor_sm_server_started(char* username, pid_t pid, int display, char* dbfield) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
long long timestamp = time(NULL);
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Update new information into the sessions database and set status to ALLOCATED
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "UPDATE sessions SET %s='%d', stamp_start='%lld', state='%d', display='%d', stamp_statechange='%lld' WHERE username='%s' AND state='%d'", dbfield, pid, timestamp, SM_STATUS_RUNNING, display, timestamp, safe_username, SM_STATUS_ALLOCATED);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
|
|
// Insert connection information into the statistics database
|
|
char* current_server = raptor_sm_get_hostname_for_display(display);
|
|
char* safe_servername = get_mysql_escaped_string(conn, current_server);
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
|
|
long long timestamp = time(NULL);
|
|
asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid, username) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d', '%s')", timestamp, STATISTICS_CONNECTION_STATUS_EVENT, safe_local_machine_fqdn, safe_servername, display, SM_STATUS_RUNNING, safe_username);
|
|
free(safe_servername);
|
|
free(safe_username);
|
|
free(safe_local_machine_fqdn);
|
|
free(current_server);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
|
|
}
|
|
free(query);
|
|
|
|
mysql_close(conn);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int raptor_sm_wm_started(char* username, pid_t pid, char* dbfield) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Update new information into the sessions database and set status to ALLOCATED
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "UPDATE sessions SET %s='%d' WHERE username='%s'", dbfield, pid, safe_username);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
mysql_close(conn);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int raptor_sm_get_display_for_username(char* username) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "SELECT display FROM sessions WHERE username='%s'", safe_username);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
int ret = atoi(row[0]);
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
else {
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return -3;
|
|
}
|
|
}
|
|
// Nothing in the DB
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return -4;
|
|
}
|
|
}
|
|
|
|
char* raptor_sm_get_username_for_display_and_hostname(int display, char* hostname) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return strdup("");
|
|
}
|
|
|
|
char* safe_hostname = get_mysql_escaped_string(conn, hostname);
|
|
asprintf(&query, "SELECT username FROM sessions WHERE display='%d' AND servername='%s'", display, safe_hostname);
|
|
free(safe_hostname);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return strdup("");
|
|
}
|
|
else {
|
|
free(query);
|
|
res = mysql_store_result(conn);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
char* ret = strdup(row[0]);
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return ret;
|
|
}
|
|
else {
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return strdup("");
|
|
}
|
|
}
|
|
// Nothing in the DB
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return strdup("");
|
|
}
|
|
}
|
|
|
|
void raptor_sm_wait_for_pid_exit(char* username, pid_t pid) {
|
|
char* ipaddr = raptor_sm_get_ip_for_username(username, false);
|
|
|
|
char* command_string;
|
|
asprintf(&command_string, "ssh root@%s \'while [[ `ps -p %d | grep %d` != \"\" ]]; do sleep 1; done\'", ipaddr, pid, pid);
|
|
system(command_string);
|
|
free(command_string);
|
|
}
|
|
|
|
void raptor_sm_session_terminated(char* username) {
|
|
raptor_sm_deallocate_session(username);
|
|
}
|
|
|
|
int raptor_sm_wm_terminated(char* username) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
long long timestamp = time(NULL);
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Update new information into the sessions database
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
asprintf(&query, "UPDATE sessions SET %s=NULL WHERE username='%s'", RAPTOR_SM_WM_PID_FIELD, safe_username);
|
|
free(safe_username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
mysql_close(conn);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int raptor_sm_get_new_unique_display(int mindisplay, int maxdisplay) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
asprintf(&query, "SELECT display FROM sessions");
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
dprint("[ERROR] MySQL connection FAILED [%s]\n\r", mysql_error(conn));
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
res = mysql_store_result(conn);
|
|
int freedisp;
|
|
bool dispinuse;
|
|
for (freedisp=mindisplay; freedisp<maxdisplay; freedisp++) {
|
|
dispinuse = false;
|
|
mysql_data_seek(res, 0);
|
|
while ((row = mysql_fetch_row(res)) != NULL) {
|
|
if (row[0]) {
|
|
if (atoi(row[0]) == freedisp) {
|
|
dispinuse = true;
|
|
}
|
|
}
|
|
}
|
|
if (dispinuse == false) {
|
|
break;
|
|
}
|
|
}
|
|
mysql_free_result(res);
|
|
mysql_close(conn);
|
|
return freedisp;
|
|
}
|
|
}
|
|
|
|
char raptor_sm_set_session_state(int display, int state) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
long long timestamp = time(NULL);
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Update new state into the sessions database
|
|
asprintf(&query, "UPDATE sessions SET state='%d', stamp_statechange='%lld' WHERE display='%d'", state, timestamp, display);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
free(query);
|
|
mysql_close(conn);
|
|
return -2;
|
|
}
|
|
else {
|
|
free(query);
|
|
|
|
// Insert connection information into the statistics database
|
|
char* hostname = raptor_sm_get_hostname_for_display(display);
|
|
char* username = raptor_sm_get_username_for_display_and_hostname(display, hostname);
|
|
char* safe_servername = get_mysql_escaped_string(conn, hostname);
|
|
char* safe_username = get_mysql_escaped_string(conn, username);
|
|
char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
|
|
long long timestamp = time(NULL);
|
|
asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid, username) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d', '%s')", timestamp, STATISTICS_CONNECTION_STATUS_EVENT, safe_local_machine_fqdn, safe_servername, display, state, safe_username);
|
|
free(safe_servername);
|
|
free(safe_username);
|
|
free(safe_local_machine_fqdn);
|
|
free(hostname);
|
|
free(username);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
|
|
}
|
|
free(query);
|
|
|
|
mysql_close(conn);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void raptor_sm_run_remote_desktop(char* username, int display, char* executable) {
|
|
char* ipaddr = raptor_sm_get_ip_for_username(username, true);
|
|
char* command_string;
|
|
#if RAPTOR_SM_DISABLE_PULSEAUDIO
|
|
asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && %s && exit\' &> /dev/null\"", ipaddr, username, display, executable);
|
|
#else
|
|
asprintf(&command_string, "ssh root@%s \"su %s -c \'export DISPLAY=:%d && export PULSE_SERVER=tcp:%s:%d && %s && exit\' &> /dev/null\"", ipaddr, username, display, ipaddr, (RAPTOR_SM_BASE_PULSEAUDIO_PORT+display), executable);
|
|
#endif
|
|
system(command_string);
|
|
free(command_string);
|
|
}
|
|
|
|
void raptor_sm_terminate_server(char* username) {
|
|
char* ipaddr = raptor_sm_get_ip_for_username(username, true);
|
|
char* command_string;
|
|
|
|
// Terminate remote X server
|
|
pid_t pid = raptor_sm_get_pid_for_username(username, RAPTOR_SM_SERVER_PID_FIELD);
|
|
if (pid > 0) {
|
|
asprintf(&command_string, "ssh root@%s \'kill -9 %ld\'", ipaddr, pid);
|
|
system(command_string);
|
|
free(command_string);
|
|
}
|
|
}
|
|
|
|
int raptor_sm_stats_report_server_start(char* hostname) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Insert information into the statistics database
|
|
char* safe_servername = get_mysql_escaped_string(conn, hostname);
|
|
char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
|
|
long long timestamp = time(NULL);
|
|
asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d')", timestamp, STATISTICS_SERVER_START_EVENT, safe_local_machine_fqdn, safe_servername, -1, -1);
|
|
free(safe_servername);
|
|
free(safe_local_machine_fqdn);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
|
|
}
|
|
free(query);
|
|
mysql_close(conn);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int raptor_sm_stats_report_server_stop(char* hostname) {
|
|
MYSQL_RES *res;
|
|
MYSQL_ROW row;
|
|
char* query;
|
|
|
|
MYSQL *conn = connect_if_needed();
|
|
if (!conn) {
|
|
return -1;
|
|
}
|
|
|
|
// Insert information into the statistics database
|
|
char* safe_servername = get_mysql_escaped_string(conn, hostname);
|
|
char* safe_local_machine_fqdn = get_mysql_escaped_string(conn, local_machine_fqdn);
|
|
long long timestamp = time(NULL);
|
|
asprintf(&query, "INSERT INTO statistics (timestamp, eventtypeid, arbiter, servername, display, typeid) VALUES ('%lld', '%d', '%s', '%s', '%d', '%d')", timestamp, STATISTICS_SERVER_STOP_EVENT, safe_local_machine_fqdn, safe_servername, -1, -1);
|
|
free(safe_servername);
|
|
free(safe_local_machine_fqdn);
|
|
if (mysql_query_internal(conn, query)) {
|
|
// Server error
|
|
dprint("Unable to insert data into statistics database! [%s]\n\r", mysql_error(conn));
|
|
}
|
|
free(query);
|
|
mysql_close(conn);
|
|
|
|
return 0;
|
|
}
|