mirror of https://github.com/BOINC/boinc.git
556 lines
15 KiB
C++
556 lines
15 KiB
C++
// This file is part of BOINC.
|
|
// http://boinc.berkeley.edu
|
|
// Copyright (C) 2008 University of California
|
|
//
|
|
// BOINC is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU Lesser General Public License
|
|
// as published by the Free Software Foundation,
|
|
// either version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// BOINC is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
// See the GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// The BOINC scheduling server.
|
|
//
|
|
// command-line options:
|
|
// --batch
|
|
// stdin contains a catenated sequence of request messages.
|
|
// Do them all, and ignore rpc_seqno
|
|
//
|
|
// Note: use_files is a debugging option (see below).
|
|
// But it's a compile setting, not a cmdline flag
|
|
|
|
#include "config.h"
|
|
#include <cassert>
|
|
#ifdef _USING_FCGI_
|
|
#include "boinc_fcgi.h"
|
|
#else
|
|
#include <cstdio>
|
|
#endif
|
|
#include <cstdlib>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <cstring>
|
|
using namespace std;
|
|
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
#include "boinc_db.h"
|
|
#include "parse.h"
|
|
#include "filesys.h"
|
|
#include "error_numbers.h"
|
|
#include "shmem.h"
|
|
#include "util.h"
|
|
#include "str_util.h"
|
|
|
|
#include "sched_config.h"
|
|
#include "server_types.h"
|
|
#include "handle_request.h"
|
|
#include "sched_util.h"
|
|
#include "sched_msgs.h"
|
|
#include "main.h"
|
|
|
|
|
|
// Useful for debugging, if your cgi script keeps crashing. This
|
|
// makes it dump a core file that you can load into a debugger to see
|
|
// where the problem is.
|
|
#define DUMP_CORE_ON_SEGV 0
|
|
|
|
#define DEBUG_LEVEL 999
|
|
#define MAX_FCGI_COUNT 20
|
|
|
|
#define REQ_FILE_PREFIX "../boinc_req/"
|
|
#define REPLY_FILE_PREFIX "../boinc_reply/"
|
|
bool use_files = false; // use disk files for req/reply msgs (for debugging)
|
|
|
|
GUI_URLS gui_urls;
|
|
PROJECT_FILES project_files;
|
|
key_t sema_key;
|
|
int g_pid;
|
|
static bool db_opened=false;
|
|
SCHED_SHMEM* ssp = 0;
|
|
bool batch = false;
|
|
bool mark_jobs_done = false;
|
|
|
|
// You can call debug_sched() for whatever situation is of
|
|
// interest to you. It won't do anything unless you create
|
|
// (touch) the file 'debug_sched' in the project root directory.
|
|
//
|
|
void debug_sched(
|
|
SCHEDULER_REQUEST& sreq, SCHEDULER_REPLY& sreply, const char *trigger
|
|
) {
|
|
char tmpfilename[256];
|
|
#ifndef _USING_FCGI_
|
|
FILE *fp;
|
|
#else
|
|
FCGI_FILE *fp;
|
|
#endif
|
|
|
|
if (!boinc_file_exists(trigger)) {
|
|
return;
|
|
}
|
|
|
|
sprintf(tmpfilename, "sched_reply_%06d_%06d", sreq.hostid, sreq.rpc_seqno);
|
|
// use _XXXXXX if you want random filenames rather than
|
|
// deterministic mkstemp(tmpfilename);
|
|
|
|
#ifndef _USING_FCGI_
|
|
fp=fopen(tmpfilename, "w");
|
|
#else
|
|
fp=FCGI::fopen(tmpfilename,"w");
|
|
#endif
|
|
|
|
if (!fp) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Found %s, but can't open %s\n", trigger, tmpfilename
|
|
);
|
|
return;
|
|
}
|
|
|
|
log_messages.printf(MSG_DEBUG,
|
|
"Found %s, so writing %s\n", trigger, tmpfilename
|
|
);
|
|
|
|
sreply.write(fp, sreq);
|
|
fclose(fp);
|
|
|
|
sprintf(tmpfilename, "sched_request_%06d_%06d", sreq.hostid, sreq.rpc_seqno);
|
|
#ifndef _USING_FCGI_
|
|
fp=fopen(tmpfilename, "w");
|
|
#else
|
|
fp=FCGI::fopen(tmpfilename,"w");
|
|
#endif
|
|
|
|
if (!fp) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Found %s, but can't open %s\n", trigger, tmpfilename
|
|
);
|
|
return;
|
|
}
|
|
|
|
log_messages.printf(MSG_DEBUG,
|
|
"Found %s, so writing %s\n", trigger, tmpfilename
|
|
);
|
|
|
|
sreq.write(fp);
|
|
fclose(fp);
|
|
|
|
return;
|
|
}
|
|
|
|
// call this only if we're not going to call handle_request()
|
|
//
|
|
static void send_message(const char* msg, int delay) {
|
|
fprintf(stdout,
|
|
"Content-type: text/plain\n\n"
|
|
"<scheduler_reply>\n"
|
|
" <message priority=\"low\">%s</message>\n"
|
|
" <request_delay>%d</request_delay>\n"
|
|
" <project_is_down/>\n"
|
|
"%s</scheduler_reply>\n",
|
|
msg, delay,
|
|
config.ended?" <ended>1</ended>\n":""
|
|
);
|
|
}
|
|
|
|
int open_database() {
|
|
int retval;
|
|
|
|
if (db_opened) {
|
|
retval = boinc_db.ping();
|
|
if (retval) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"lost connection to database - trying to reconnect\n"
|
|
);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
retval = boinc_db.open(
|
|
config.db_name, config.db_host, config.db_user, config.db_passwd
|
|
);
|
|
if (retval) {
|
|
log_messages.printf(MSG_CRITICAL, "can't open database\n");
|
|
return retval;
|
|
}
|
|
db_opened = true;
|
|
return 0;
|
|
}
|
|
|
|
// If the scheduler 'hangs', which it can do if a request is not fully processed
|
|
// or some other process arises, then Apache will send a SIGTERM to the cgi.
|
|
// This signal handler ensures that rather than dying silently,
|
|
// the cgi process will leave behind some record in the log file.
|
|
//
|
|
void sigterm_handler(int signo) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Caught signal %d [scheduler ran %f seconds]. Exit(1)ing\n",
|
|
signo, elapsed_wallclock_time()
|
|
);
|
|
fflush((FILE*)NULL);
|
|
exit(1);
|
|
return;
|
|
}
|
|
|
|
static void log_request_headers(int& length) {
|
|
char *cl=getenv("CONTENT_LENGTH");
|
|
char *ri=getenv("REMOTE_ADDR");
|
|
char *rm=getenv("REQUEST_METHOD");
|
|
char *ct=getenv("CONTENT_TYPE");
|
|
char *ha=getenv("HTTP_ACCEPT");
|
|
char *hu=getenv("HTTP_USER_AGENT");
|
|
|
|
log_messages.printf(MSG_DEBUG,
|
|
"REQUEST_METHOD=%s "
|
|
"CONTENT_TYPE=%s "
|
|
"HTTP_ACCEPT=%s "
|
|
"HTTP_USER_AGENT=%s\n",
|
|
rm?rm:"" , ct?ct:"", ha?ha:"", hu?hu:""
|
|
);
|
|
|
|
if (!cl) {
|
|
log_messages.printf(MSG_CRITICAL, "CONTENT_LENGTH environment variable not set\n");
|
|
} else {
|
|
length=atoi(cl);
|
|
log_messages.printf(MSG_DEBUG, "CONTENT_LENGTH=%d from %s\n", length, ri?ri:"[Unknown]");
|
|
}
|
|
}
|
|
|
|
#if DUMP_CORE_ON_SEGV
|
|
void set_core_dump_size_limit() {
|
|
struct rlimit limit;
|
|
if (getrlimit(RLIMIT_CORE, &limit)) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Unable to read resource limit for core dump size.\n"
|
|
);
|
|
} else {
|
|
char short_string[256], *short_message=short_string;
|
|
|
|
short_message += sprintf(short_message,"Default resource limit for core dump size curr=");
|
|
if (limit.rlim_cur == RLIM_INFINITY)
|
|
short_message += sprintf(short_message,"Inf max=");
|
|
else
|
|
short_message += sprintf(short_message,"%d max=", (int)limit.rlim_cur);
|
|
|
|
if (limit.rlim_max == RLIM_INFINITY)
|
|
short_message += sprintf(short_message,"Inf\n");
|
|
else
|
|
short_message += sprintf(short_message,"%d\n", (int)limit.rlim_max);
|
|
|
|
log_messages.printf(MSG_DEBUG, "%s", short_string);
|
|
|
|
// now set limit to the maximum allowed value
|
|
limit.rlim_cur=limit.rlim_max;
|
|
if (setrlimit(RLIMIT_CORE, &limit)) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Unable to set current resource limit for core dump size to max value.\n"
|
|
);
|
|
} else {
|
|
log_messages.printf(MSG_DEBUG,
|
|
"Set limit for core dump size to max value.\n"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void attach_to_feeder_shmem() {
|
|
char path[256];
|
|
get_project_dir(path, sizeof(path));
|
|
get_key(path, 'a', sema_key);
|
|
int i, retval;
|
|
void* p;
|
|
|
|
retval = attach_shmem(config.shmem_key, &p);
|
|
if (retval || p==0) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Can't attach shmem: %d (feeder not running?)\n",
|
|
retval
|
|
);
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"uid %d euid %d gid %d eguid%d\n",
|
|
getuid(), geteuid(), getgid(), getegid()
|
|
);
|
|
} else {
|
|
ssp = (SCHED_SHMEM*)p;
|
|
retval = ssp->verify();
|
|
if (retval) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"shmem has wrong struct sizes - recompile\n"
|
|
);
|
|
send_message("Server error: recompile needed", 3600);
|
|
exit(0);
|
|
}
|
|
|
|
for (i=0; i<10; i++) {
|
|
if (ssp->ready) break;
|
|
log_messages.printf(MSG_DEBUG,
|
|
"waiting for ready flag\n"
|
|
);
|
|
sleep(1);
|
|
}
|
|
if (!ssp->ready) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"feeder doesn't seem to be running\n"
|
|
);
|
|
send_message(
|
|
"Server error: feeder not running", 3600
|
|
);
|
|
exit(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
#ifndef _USING_FCGI_
|
|
FILE* fin, *fout;
|
|
#else
|
|
FCGI_FILE *fin, *fout;
|
|
#endif
|
|
int i, retval;
|
|
char req_path[256], reply_path[256], path[256];
|
|
unsigned int counter=0;
|
|
char* code_sign_key;
|
|
int length=-1;
|
|
log_messages.pid = getpid();
|
|
|
|
for (i=1; i<argc; i++) {
|
|
if (!strcmp(argv[i], "--batch")) {
|
|
batch = true;
|
|
continue;
|
|
}
|
|
if (!strcmp(argv[i], "--mark_jobs_done")) {
|
|
mark_jobs_done = true;
|
|
}
|
|
#ifdef GCL_SIMULATOR
|
|
if (!strcmp(argv[i], "--simulator")) {
|
|
simtime = atof(argv[++i]);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// initialized timer
|
|
elapsed_wallclock_time();
|
|
|
|
// install a signal handler that catches SIGTERMS sent by Apache if the cgi
|
|
// times out.
|
|
//
|
|
signal(SIGTERM, sigterm_handler);
|
|
|
|
char *stderr_buffer, buf[256];
|
|
get_log_path(path, "scheduler.log");
|
|
#ifndef _USING_FCGI_
|
|
if (!freopen(path, "a", stderr)) {
|
|
fprintf(stderr, "Can't redirect stderr\n");
|
|
sprintf(buf, "Server can't open log file (%s)", path);
|
|
send_message(buf, 3600);
|
|
exit(1);
|
|
}
|
|
// install a larger buffer for stderr. This ensures that
|
|
// log information from different scheduler requests running
|
|
// in parallel don't collide in the log file and appear intermingled.
|
|
//
|
|
if (!(stderr_buffer=(char *)malloc(32768)) || setvbuf(stderr, stderr_buffer, _IOFBF, 32768)) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Unable to change stderr buffering preferences\n"
|
|
);
|
|
}
|
|
#else
|
|
FCGI_FILE* f = FCGI::fopen(path, "a");
|
|
if (f) {
|
|
log_messages.redirect(f);
|
|
} else {
|
|
char buf[256];
|
|
fprintf(stderr, "Can't redirect FCGI log messages\n");
|
|
sprintf(buf, "Server can't open log file for FCGI (%s)", path);
|
|
send_message(buf, 3600);
|
|
exit(1);
|
|
}
|
|
// set buffer as above, note that f is really a struct from fcgi_stdio.h
|
|
if (!(stderr_buffer=(char *)malloc(32768)) || setvbuf(f->stdio_stream, stderr_buffer, _IOFBF, 32768)) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Unable to change stderr FCGI buffering preferences\n"
|
|
);
|
|
}
|
|
#endif
|
|
|
|
srand(time(0)+getpid());
|
|
log_messages.set_debug_level(DEBUG_LEVEL);
|
|
|
|
#if DUMP_CORE_ON_SEGV
|
|
set_core_dump_size_limit();
|
|
#endif
|
|
|
|
retval = config.parse_file("..");
|
|
if (retval) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Can't parse ../config.xml: %s\n", boincerror(retval)
|
|
);
|
|
send_message("Server can't parse configuration file", 3600);
|
|
exit(0);
|
|
}
|
|
|
|
log_messages.set_debug_level(config.sched_debug_level);
|
|
|
|
gui_urls.init();
|
|
project_files.init();
|
|
|
|
sprintf(path, "%s/code_sign_public", config.key_dir);
|
|
retval = read_file_malloc(path, code_sign_key);
|
|
if (retval) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Can't read code sign key file (%s)\n", path
|
|
);
|
|
send_message("Server can't find key file", 3600);
|
|
exit(0);
|
|
}
|
|
|
|
|
|
g_pid = getpid();
|
|
#ifdef _USING_FCGI_
|
|
//while(FCGI_Accept() >= 0 && counter < MAX_FCGI_COUNT) {
|
|
while(FCGI_Accept() >= 0) {
|
|
counter++;
|
|
log_messages.set_indent_level(0);
|
|
#endif
|
|
if (config.debug_request_headers) {
|
|
log_request_headers(length);
|
|
}
|
|
|
|
if (check_stop_sched()) {
|
|
send_message("Project is temporarily shut down for maintenance", 3600);
|
|
goto done;
|
|
}
|
|
|
|
if (!ssp) {
|
|
attach_to_feeder_shmem();
|
|
}
|
|
if (!ssp) {
|
|
send_message("Server error: can't attach shared memory", 3600);
|
|
goto done;
|
|
}
|
|
|
|
if (use_files) {
|
|
struct stat statbuf;
|
|
// the code below is convoluted because,
|
|
// instead of going from stdin to stdout directly,
|
|
// we go via a pair of disk files
|
|
// (this makes it easy to save the input,
|
|
// and to know the length of the output).
|
|
// NOTE: to use this, you must create group-writeable dirs
|
|
// boinc_req and boinc_reply in the project dir
|
|
//
|
|
sprintf(req_path, "%s%d_%u", REQ_FILE_PREFIX, g_pid, counter);
|
|
sprintf(reply_path, "%s%d_%u", REPLY_FILE_PREFIX, g_pid, counter);
|
|
#ifndef _USING_FCGI_
|
|
fout = fopen(req_path, "w");
|
|
#else
|
|
fout = FCGI::fopen(req_path,"w");
|
|
#endif
|
|
if (!fout) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"can't write request file\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
copy_stream(stdin, fout);
|
|
fclose(fout);
|
|
stat(req_path, &statbuf);
|
|
if (length>=0 && (statbuf.st_size != length)) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"Request length %d != CONTENT_LENGTH %d\n",
|
|
(int)statbuf.st_size, length
|
|
);
|
|
}
|
|
|
|
#ifndef _USING_FCGI_
|
|
fin = fopen(req_path, "r");
|
|
#else
|
|
fin = FCGI::fopen(req_path,"r");
|
|
#endif
|
|
if (!fin) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"can't read request file\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
#ifndef _USING_FCGI_
|
|
fout = fopen(reply_path, "w");
|
|
#else
|
|
fout = FCGI::fopen(reply_path, "w");
|
|
#endif
|
|
if (!fout) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"can't write reply file\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
|
|
handle_request(fin, fout, code_sign_key);
|
|
fclose(fin);
|
|
fclose(fout);
|
|
#ifndef _USING_FCGI_
|
|
fin = fopen(reply_path, "r");
|
|
#else
|
|
fin = FCGI::fopen(reply_path, "r");
|
|
#endif
|
|
if (!fin) {
|
|
log_messages.printf(MSG_CRITICAL,
|
|
"can't read reply file\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
copy_stream(fin, stdout);
|
|
fclose(fin);
|
|
#ifdef EINSTEIN_AT_HOME
|
|
if (getenv("CONTENT_LENGTH")) unlink(req_path);
|
|
if (getenv("CONTENT_LENGTH")) unlink(reply_path);
|
|
#else
|
|
// unlink(req_path);
|
|
// unlink(reply_path);
|
|
#endif
|
|
#ifndef _USING_FCGI_
|
|
} else if (batch) {
|
|
while (!feof(stdin)) {
|
|
handle_request(stdin, stdout, code_sign_key);
|
|
fflush(stdout);
|
|
}
|
|
#endif
|
|
} else {
|
|
handle_request(stdin, stdout, code_sign_key);
|
|
}
|
|
done:
|
|
#ifdef _USING_FCGI_
|
|
log_messages.printf(MSG_DEBUG,
|
|
"FCGI: counter: %d\n", counter
|
|
);
|
|
log_messages.flush();
|
|
} // do()
|
|
if (counter == MAX_FCGI_COUNT) {
|
|
fprintf(stderr, "FCGI: counter passed MAX_FCGI_COUNT - exiting..\n");
|
|
} else {
|
|
fprintf(stderr, "FCGI: FCGI_Accept failed - exiting..\n");
|
|
}
|
|
// when exiting, write headers back to apache so it won't complain
|
|
// about "incomplete headers"
|
|
fprintf(stdout,"Content-type: text/plain\n\n");
|
|
#endif
|
|
if (db_opened) {
|
|
boinc_db.close();
|
|
}
|
|
}
|
|
|
|
const char *BOINC_RCSID_0ebdf5d770 = "$Id$";
|