Annotation of OpenXM/src/kxx/oxmain.c, Revision 1.25
1.25 ! takayama 1: /* $OpenXM: OpenXM/src/kxx/oxmain.c,v 1.24 2006/06/05 00:25:50 takayama Exp $ */
! 2: /* Note on IntelMac. [2006.06.05]
! 3: SIGINT does not seem to be blocked on the rosetta emulator of ppc
! 4: on the IntelMac's. "ox" should be universal binary.
! 5: A dirty hack to generate a universal binary of ox is as follows.
! 6: (1) Add -arch ppc -arch i386 to CFLAGS in src/kxx/Makefile
! 7: and src/kan96xx/plugin/Makefile
! 8: (2) Build ox
! 9: */
1.1 maekawa 10: /* nullserver01 */
11: #include <stdio.h>
1.4 takayama 12: #include <fcntl.h>
1.10 takayama 13: #include <unistd.h>
1.1 maekawa 14: #include <sys/types.h>
15: #include <sys/socket.h>
16: #include <sys/time.h>
1.23 takayama 17: #include <sys/resource.h>
1.1 maekawa 18: #include <netinet/in.h>
19: #include <netdb.h>
20: #include <signal.h>
21: #include <setjmp.h>
1.14 takayama 22: #include <stdlib.h>
1.1 maekawa 23: /* -lnsl -lsocket /usr/ucblib/libucb.a */
24: #include "ox_kan.h"
25: #include "serversm.h"
26:
1.4 takayama 27: #define SERVERNAME "ox_sm1"
1.1 maekawa 28:
1.14 takayama 29: extern char **environ;
1.1 maekawa 30: int OxCritical = 0;
31: int OxInterruptFlag = 0;
1.12 takayama 32: int OxTerminateMode = 0;
1.1 maekawa 33:
34: int SerialCurrentControl;
35:
36: int MyServerPid;
1.4 takayama 37: #define SERVERNAME_SIZE 4096
38: char ServerName[SERVERNAME_SIZE];
1.1 maekawa 39: int PacketMonitor = 0;
40: int Quiet = 0;
41:
42: int LocalMode = 1;
43: int NotifyPortnumber = 0;
1.4 takayama 44: int Do_not_use_control_stream_to_tell_no_server = 1;
1.24 takayama 45: int IgnoreSIGINT = 1;
1.4 takayama 46: static void errorToStartEngine(void);
47: static int findOxServer(char *server);
48: static void couldNotFind(char *s);
1.8 takayama 49: /* gcc -v -c hoge.c */
1.21 takayama 50: static void mywait();
1.15 takayama 51:
52: void *sGC_malloc(int n) {
53: return (void *)malloc(n);
54: }
1.1 maekawa 55:
56: main(int argc, char *argv[]) {
57: int fd;
58: int size;
59: char sname[1024];
60: int tmp[1];
61: char *buf;
62: int i;
63: int fdControl = -1; int portControl = 1200;
64: int fdStream = -1; int portStream = 1300;
65: int reverse = 0;
66: extern int OpenedSocket;
67: char portfile[1024];
1.12 takayama 68: char *pass = NULL;
1.18 takayama 69: char *passControl = NULL;
70: char *passData = NULL;
1.4 takayama 71: int result;
1.9 takayama 72: int sleepingTime = 0;
1.22 takayama 73: int authEncoding=0;
74: FILE *fp;
75: char *stmp;
1.12 takayama 76: extern int OxTerminateMode;
1.1 maekawa 77:
1.17 takayama 78: signal(SIGHUP,SIG_IGN); /* ignore x of xterm */
1.1 maekawa 79: strcpy(sname,"localhost");
80: strcpy(ServerName,SERVERNAME);
81: i = 1;
1.2 takayama 82: if (argc == 1) {
83: oxmainUsage();
1.12 takayama 84: exit(10);
1.2 takayama 85: }
1.1 maekawa 86: while (i<argc) {
87: if (strcmp(argv[i],"-host") == 0) {
88: i++;
89: if (i<argc) strcpy(sname,argv[i]);
90: }else if (strcmp(argv[i],"-data")==0) {
91: i++;
92: if (i<argc) sscanf(argv[i],"%d",&portStream);
93: }else if (strcmp(argv[i],"-control")==0) {
94: i++;
95: if (i<argc) sscanf(argv[i],"%d",&portControl);
96: }else if (strcmp(argv[i],"-ox") == 0) {
97: i++;
98: if (i<argc) strcpy(ServerName,argv[i]);
99: }else if (strcmp(argv[i],"-monitor") == 0) {
100: PacketMonitor = 1;
101: }else if (strcmp(argv[i],"-insecure") == 0) {
102: LocalMode = 0;
103: }else if (strcmp(argv[i],"-reverse") == 0) {
104: reverse = 1;
1.12 takayama 105: }else if (strcmp(argv[i],"-finish") == 0) {
106: OxTerminateMode = 1;
1.1 maekawa 107: }else if (strcmp(argv[i],"-portfile") == 0) {
108: i++;
109: if (i<argc) {
1.7 takayama 110: sscanf(argv[i],"%s",portfile);
111: portControl = 0;
112: portStream = 0;
113: NotifyPortnumber = 1;
1.1 maekawa 114: }
115: }else if (strcmp(argv[i],"-pass") == 0) {
116: i++;
117: if (i<argc) {
1.7 takayama 118: pass = argv[i];
1.1 maekawa 119: }
1.18 takayama 120: }else if (strcmp(argv[i],"-passData") == 0) {
121: i++;
122: if (i<argc) {
123: passData = argv[i];
124: }
125: }else if (strcmp(argv[i],"-passControl") == 0) {
126: i++;
127: if (i<argc) {
128: passControl = argv[i];
129: }
1.9 takayama 130: }else if (strcmp(argv[i],"-wait") == 0) {
131: i++;
132: if (i<argc) {
133: sscanf(argv[i],"%d",&sleepingTime);
134: }
1.22 takayama 135: }else if (strcmp(argv[i],"-authEncoding") == 0) {
136: i++;
137: if (strcmp(argv[i],"file") == 0) {
138: authEncoding = 1;
139: }else{
140: fprintf(stderr,"Unknown -authEncoding %s.\n",argv[i]);
141: oxmainUsage(); exit(10);
142: }
1.24 takayama 143: }else if (strcmp(argv[i],"-ignoreSIGINT") == 0) {
144: i++;
145: if (i<argc) {
1.25 ! takayama 146: sscanf(argv[i],"%d",&IgnoreSIGINT);
1.24 takayama 147: }
1.1 maekawa 148: }else {
149: fprintf(stderr,"Unknown option %s.\n",argv[i]);
150: oxmainUsage(); exit(10);
151: }
152: i++;
153: }
154:
1.4 takayama 155: if (Do_not_use_control_stream_to_tell_no_server) {
1.7 takayama 156: if (findOxServer(ServerName) < 0) {
157: fprintf(stderr,"Sleeping five seconds...\n");
158: sleep(5);
159: exit(-1);
160: }
1.9 takayama 161: }
162:
163: if (sleepingTime) {
164: fprintf(stderr,"Waiting to connect for %d seconds...\n",sleepingTime);
165: sleep(sleepingTime);
166: fprintf(stderr,"\nTrying to connect\n");
1.4 takayama 167: }
168:
1.18 takayama 169: if ((pass != NULL) && (passData == NULL)) {
170: passData = pass;
171: }
172: if ((pass != NULL) && (passControl == NULL)) {
173: passControl = pass;
174: }
175:
1.19 takayama 176: /* Decrypt passControl and passData, here. Lookup cryptmethod. */
1.22 takayama 177: if (authEncoding == 1) {
178: stmp = (char *)sGC_malloc(strlen(getenv("HOME"))+strlen(passControl)+
179: strlen(passData)+128);
180: sprintf(stmp,"%s/.openxm/tmp.opt/%s",(char *)getenv("HOME"),passControl);
181: fp = fopen(stmp,"r");
182: if (fp == NULL) { fprintf(stderr,"passControl file %s is not found.\n",stmp); exit(1);}
183: fgets(stmp,127,fp); passControl = stmp; fclose(fp);
184:
185: stmp = (char *)sGC_malloc(strlen(getenv("HOME"))+strlen(passControl)+
186: strlen(passData)+128);
187: sprintf(stmp,"%s/.openxm/tmp.opt/%s",(char *)getenv("HOME"),passData);
188: fp = fopen(stmp,"r");
189: if (fp == NULL) { fprintf(stderr,"passData file %s is not found.\n",stmp); exit(1);}
190: fgets(stmp,127,fp); passData = stmp; fclose(fp);
191: }
1.19 takayama 192:
1.1 maekawa 193: if (reverse) {
194: /* The order is very important. */
1.18 takayama 195: fdControl = socketConnectWithPass(sname,portControl,passControl);
196: fdStream = socketConnectWithPass(sname,portStream,passData);
1.1 maekawa 197:
198: fprintf(stderr,"Connected: control = %d, data = %d.\n",fdControl,fdStream);
1.7 takayama 199: result = 0;
1.5 takayama 200:
201:
1.20 takayama 202: if ((fdControl < 0) || (fdStream < 0)) {
203: fprintf(stderr,"Waiting for 10 seconds to show an error.\n");
204: sleep(10);
205: }
206:
1.1 maekawa 207: if (portControl != -1) {
208: MyServerPid = fork();
209: if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
1.4 takayama 210: else result=childServerMain(fdControl,fdStream);
1.1 maekawa 211: }else{
1.4 takayama 212: result=childServerMain(fdControl,fdStream);
1.1 maekawa 213: }
1.4 takayama 214: /* This line will be never executed in case of success */
1.7 takayama 215: if (result < 0 ) {
216: errorToStartEngine();
217: }
1.1 maekawa 218: }
219:
220: /* non-reverse case. */
221: fprintf(stderr,"Hostname is %s \n",sname);
222: fprintf(stderr,"Port for data (-data) = %d \n",portStream);
223: fprintf(stderr,"Port for control message (-control) = %d \n",portControl);
224: fflush(NULL);
225:
226:
227: if (LocalMode) {
228: if (portControl != -1) {
229: fdControl = socketOpen(sname,portControl);
230: portControl = OpenedSocket;
231: if (NotifyPortnumber) {
1.7 takayama 232: oxWritePortFile(0,portControl,portfile);
1.1 maekawa 233: }
234: fdControl = socketAcceptLocal(fdControl);
235: fprintf(stderr,"\n control port %d : Connected.\n",portControl);
236: }
237: if (portStream != -1) {
238: fdStream = socketOpen(sname,portStream);
239: portStream = OpenedSocket;
240: if (NotifyPortnumber) {
1.7 takayama 241: oxWritePortFile(1,portStream,portfile);
1.1 maekawa 242: }
243: fdStream = socketAcceptLocal(fdStream);
244: fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
245: }
246: }else{
247: if (portControl != -1) {
248: fdControl = socketOpen(sname,portControl);
249: portControl = OpenedSocket;
250: if (NotifyPortnumber) {
1.7 takayama 251: oxWritePortFile(0,portControl,portfile);
1.1 maekawa 252: }
253: fdControl = socketAccept(fdControl);
254: fprintf(stderr,"\n control port %d : Connected.\n",portControl);
255: }
256: if (portStream != -1) {
257: fdStream = socketOpen(sname,portStream);
258: portStream = OpenedSocket;
259: if (NotifyPortnumber) {
1.7 takayama 260: oxWritePortFile(1,portStream,portfile);
1.1 maekawa 261: }
262: fdStream = socketAccept(fdStream);
263: fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
264: }
265: }
266:
1.19 takayama 267: if (passControl != NULL) {
268: char *s; int mm;
269: fprintf(stderr,"passControl\n");
270: mm = strlen(passControl);
271: s = (char *) malloc(mm+1);
272: if (s == NULL) {fprintf(stderr,"No more memory.\n"); exit(1); }
273: if (read(fdControl,s,mm+1) < 0) {
274: fprintf(stderr,"Read error to read passControl\n"); sleep(5); exit(1);
275: }
276: s[mm] = 0;
277: if (strcmp(s,passControl) != 0) {
278: fprintf(stderr,"s=%s and passControl=%s do not match.\n",s,passControl); sleep(5); exit(1);
279: }
280: free(s);
281: }
282: if (passData != NULL) {
283: char *s; int mm;
284: mm = strlen(passData);
285: fprintf(stderr,"passData\n");
286: s = (char *) malloc(mm+1);
287: if (s == NULL) {fprintf(stderr,"No more memory.\n"); exit(1); }
288: if (read(fdStream,s,mm+1) < 0) {
289: fprintf(stderr,"Read error to read passData\n");
290: errorToStartEngine();
291: }
292: if (strcmp(s,passData) != 0) {
293: fprintf(stderr,"s=%s and passData=%s do not match.\n",s,passData);
294: errorToStartEngine();
295: }
296: free(s);
297: }
1.1 maekawa 298:
1.20 takayama 299: if ((fdControl < 0) || (fdStream < 0)) {
300: fprintf(stderr,"Waiting for 10 seconds to show an error.\n");
301: sleep(10);
302: }
303:
304:
1.4 takayama 305: result = 0;
1.1 maekawa 306: if (portControl != -1) {
307: MyServerPid = fork();
308: if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
1.4 takayama 309: else result = childServerMain(fdControl,fdStream);
1.1 maekawa 310: }else{
1.4 takayama 311: result = childServerMain(fdControl,fdStream);
1.1 maekawa 312: }
1.4 takayama 313: if (result < 0) errorToStartEngine();
314: }
1.1 maekawa 315:
1.4 takayama 316: static void errorToStartEngine(void) {
317: fprintf(stderr,"Failed to start the engine. Childing process is terminating.\n");
318: /* You have to tell to the control server that there is no engine.
1.7 takayama 319: And, the control server must tell the client that there is no
320: engine.
321: This part has not yet been implemented.
322: If you implement this, set Do_not_use_control_stream_to_tell_no_server to
323: zero.
324: */
1.20 takayama 325: sleep(10);
1.4 takayama 326: exit(-1);
1.1 maekawa 327: }
328:
329: oxmainUsage() {
330: fprintf(stderr,"Usage: \n");
331: fprintf(stderr," ox [-ox serverprogram -host name -data portnum -control portnum -monitor]\n");
1.18 takayama 332: fprintf(stderr," [-insecure -portfile fname -reverse -passControl xxxyyyzzz -passData pppqqqrrr]");
1.24 takayama 333: fprintf(stderr," [-finish] [-wait seconds] [-authEncoding [file]]");
334: fprintf(stderr," [-ignoreSIGINT [1|0]]");
1.1 maekawa 335: fprintf(stderr,"\n");
1.2 takayama 336: fprintf(stderr,"-reverse: ox server connects to the client.\n");
1.18 takayama 337: fprintf(stderr," The client must give a one time password to ox server to connect to the client with -pass* option.\n");
1.2 takayama 338: fprintf(stderr," The one time password can be seen by ps command, so you must not use this one time password system on an untrustful host.\n");
339: fprintf(stderr," The one time password should be sent by a safe communication line like ssh and the ox server should be started by ssh. Do not use rsh\n");
1.18 takayama 340: fprintf(stderr," (The option -pass is obsolete.)\n");
1.2 takayama 341: fprintf(stderr," If -reverse is not given, the client connect to the ox server\n");
342: fprintf(stderr," See OpenXM/src/SSkan/Doc/ox.sm1, /sm1connectr\n");
343: fprintf(stderr,"-insecure : \n");
344: fprintf(stderr," If you access to the server from a localhost, you do not need one time password. However, if you access outside of the localhost, a one time password is required. To turn off this restriction, -insecure option is used.\n");
1.4 takayama 345: fprintf(stderr,"\n");
346: fprintf(stderr,"If ox fails to find the serverprogram, it tries to look for it in /usr/local/OpenXM/bin and $OpenXM_HOME/bin.\n");
347: fprintf(stderr,"\n");
1.2 takayama 348: fprintf(stderr,"Example 1:\n");
1.3 takayama 349: fprintf(stderr,"(Start the ox server): dc1%% ox -ox ~/OpenXM/bin/ox_sm1 -host dc1.math.kobe-u.ac.jp -insecure -control 1200 -data 1300\n");
1.2 takayama 350: fprintf(stderr,"(client): sm1\n ");
351: fprintf(stderr," (ox.sm1) run ; \n");
1.1 maekawa 352: fprintf(stderr," sm1>[(dc1.math.kobe-u.ac.jp) 1300 1200] oxconnect /ox.ccc set\n");
1.2 takayama 353: fprintf(stderr,"Example 2:\n");
354: fprintf(stderr,"(Start the ox server): dc1%% ox -ox ~/OpenXM/bin/ox_sm1\n");
355: fprintf(stderr,"(client): dc1%% sm1\n ");
356: fprintf(stderr," (ox.sm1) run ; \n");
357: fprintf(stderr," sm1>[(localhost) 1300 1200] oxconnect /ox.ccc set\n");
1.1 maekawa 358: fprintf(stderr,"\n");
359: }
360:
361: parentServerMain(int fdControl, int fdStream) {
362: int id;
363: int mtag;
364: int size;
365: int n;
366: int r;
367: int message = 1;
368: int controlByteOrder;
1.12 takayama 369: extern OxTerminateMode;
1.1 maekawa 370: extern void myServerExit();
371:
1.21 takayama 372: signal(SIGCHLD,mywait);
1.12 takayama 373: if (OxTerminateMode) {
374: /*
375: OxTerminateMode cannot be used if you run ox by xterm -exec ox ...
376: */
377: if (fork()) {
378: close(fdControl); close(fdStream);
379: /* Parent */
380: exit(0); /*Tell the caller that launching is successfully finished.*/
381: }
382: }
383:
1.13 takayama 384: controlByteOrder = oxTellMyByteOrder(fdControl,fdControl);
1.1 maekawa 385: /* Set the network byte order. */
386: fprintf(stderr,"controlByteOrder=%x\n",controlByteOrder);
387:
388:
389: signal(SIGINT,myServerExit);
390: while(1) {
391: mtag = oxfdGetOXheader(fdControl,&SerialCurrentControl);
392: /* get the message_tag */
393: /* message_body */
394: id = oxfdGetInt32(fdControl); /* get the function_id */
395: if (message) {printf("\n[control] control function_id is %d\n",id);}
396: switch( id ) {
397: case SM_control_kill:
398: if (message) printf("[control] control_kill\n");
399: oxSendResultOfControl(fdControl);
400: sleep(2);
401: myServerExit();
402: break;
403: case SM_control_reset_connection:
404: if (message) printf("[control] control_reset_connection.\n");
405: if (message) printf("Sending the SIGUSR1 signal to %d: ",MyServerPid);
406: r=kill(MyServerPid,SIGUSR1);
407: if (message) printf("Result = %d\n",r);
408: fflush(NULL);
1.7 takayama 409: /* oxSendResultOfControlInt32(fdControl,0); */
1.1 maekawa 410: break;
411: default:
412: fprintf(stderr,"[control] Unknown control message.\n");
413: fprintf(stderr,"Shutdown the server.");
414: myServerExit();
415: break;
416: }
417: }
418: }
419:
420: void myServerExit() {
421: printf("Sending the kill signal to the child.\n");
422: kill(MyServerPid,SIGKILL);
1.12 takayama 423: exit(0);
1.1 maekawa 424: }
425:
426: childServerMain(int fdControl, int fdStream) {
427: int i;
1.23 takayama 428: struct rlimit res;
1.1 maekawa 429: close(fdControl); /* close(0); dup(fdStream); */
430: dup2(fdStream,3);
431: dup2(fdStream,4);
1.4 takayama 432: /*close(0);
1.7 takayama 433: #include <sys/param.h>
434: for (i=5; i<NOFILE; i++) close(i);
435: */
1.4 takayama 436: if (!Do_not_use_control_stream_to_tell_no_server) {
1.7 takayama 437: if (findOxServer(ServerName) < 0) {
438: return(-1);
439: }
1.4 takayama 440: }
1.5 takayama 441: fprintf(stderr,"childServerMain: Starting the server %s\n",ServerName); fflush(NULL);
1.14 takayama 442:
443: /*
444: {
445: int i;
446: i=0;
447: while (environ[i] != NULL) {
448: fprintf(stderr,"%s ",environ[i++]);
449: }
450: fprintf(stderr,"\n");
451: }
452: */
453: /* bug: xterm of potato does not seem to pass the LD_LIBRARY_PATH.
454: So, the new gc does not work.
455: it is an workaround for OpenXM */
456: if (getenv("LD_LIBRARY_PATH") == (char *)NULL) {
457: char *s,*o;
458: fprintf(stderr,"Hmm... LD_LIBRARY_PATH does not seem to be set.\n");
459: o = getenv("OpenXM_HOME");
460: if (o == NULL) {
461: fprintf(stderr,"Giving up to set the LD_LIBRARY_PATH variable.\n");
462: }else{
463: s = (char *)malloc(strlen(o)+64);
464: sprintf(s,"LD_LIBRARY_PATH=%s/lib",o);
465: putenv(s);
466: }
467: }
1.23 takayama 468: getrlimit(RLIMIT_STACK,&res);
469: if (res.rlim_cur < 65536000) {
470: fprintf(stderr,"RLIMIT_STACK is increased to 65Mbytes by setrlimit.\n");
471: res.rlim_cur = 65536000;
472: setrlimit(RLIMIT_STACK,&res);
473: }
1.24 takayama 474:
1.25 ! takayama 475: if (IgnoreSIGINT) { signal(SIGINT, SIG_IGN); fprintf(stderr,"SIGING\n");}
1.24 takayama 476:
1.1 maekawa 477: if (PacketMonitor) {
1.14 takayama 478: if (execle(ServerName,ServerName,"-monitor",NULL,environ)) {
1.1 maekawa 479: fprintf(stderr,"%s cannot be executed with -monitor.\n",ServerName);
1.7 takayama 480: fflush(NULL);
481: return(-1);
1.1 maekawa 482: }
483: }else {
1.14 takayama 484: if (execle(ServerName,ServerName,NULL,environ)) {
1.1 maekawa 485: fprintf(stderr,"%s cannot be executed.\n",ServerName);
1.7 takayama 486: fflush(NULL);
487: return(-1);
1.1 maekawa 488: }
489: }
1.4 takayama 490: /* never reached. */
1.1 maekawa 491: }
492:
493:
494: /* These are dummy. It is defined in stackmachine.c */
495: unlockCtrlCForOx() { ; }
496: restoreLockCtrlCForOx() { ; }
497:
1.4 takayama 498: static int findOxServer(char *server) {
499: char *p;
500: char *p2;
501: if (strlen(server) == 0) return(-1);
1.10 takayama 502: /* fd = open(server,O_RDONLY); */
1.11 ohara 503: if (access(server,X_OK&R_OK) == 0) {
1.7 takayama 504: fprintf(stderr,"Starting OX server : %s\n",server);
505: return(0);
1.4 takayama 506: }
507: if (server[0] == '/') {
1.7 takayama 508: couldNotFind(server);
509: return(-1);
1.4 takayama 510: }
511: fprintf(stderr,"The server %s was not found. Trying to find it under OpenXM/bin\n",server);
512: p = getenv("OpenXM_HOME");
513: if (p == NULL) {
514: p = "/usr/local/OpenXM";
515: }
516: p2 = (char *) malloc(sizeof(char)*(strlen(p)+strlen("/bin/")+3+strlen(server)));
517: if (p2 == NULL) { fprintf(stderr,"No more memory.\n"); exit(10); }
518: strcpy(p2,p); strcat(p2,"/bin/"); strcat(p2,server);
1.10 takayama 519: /* fd = open(p2,O_RDONLY); */
1.11 ohara 520: if (access(p2,X_OK&R_OK) == 0) {
1.7 takayama 521: fprintf(stderr,"Starting OX server : %s\n",p2);
522: if (strlen(p2) < SERVERNAME_SIZE) strcpy(server,p2);
523: else {
524: couldNotFind("Too long ox server name.");
525: return(-1);
526: }
527: return(0);
1.4 takayama 528: }
529: couldNotFind(p2);
530: return(-1);
531: }
1.1 maekawa 532:
1.4 takayama 533: static void couldNotFind(char *s) {
534: fprintf(stderr,"OX server %s could not be found.\n",s);
535: }
1.1 maekawa 536:
537:
1.21 takayama 538: static void mywait() {
539: int status;
540: int pid;
541: int i,j;
542: /* signal(SIGCHLD,SIG_IGN); */
543: pid = wait(&status);
544: fprintf(stderr,"Control: child process %d is exiting.\n",pid);
545: fprintf(stderr,"Control: Shutting down the control server.\n");
546: sleep(2);
547: exit(0);
548: }
1.1 maekawa 549:
550:
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