Annotation of OpenXM/src/kxx/oxmain.c, Revision 1.8
1.8 ! takayama 1: /* $OpenXM: OpenXM/src/kxx/oxmain.c,v 1.7 2001/05/06 07:53:01 takayama Exp $ */
1.1 maekawa 2: /* nullserver01 */
3: #include <stdio.h>
1.4 takayama 4: #include <fcntl.h>
1.1 maekawa 5: #include <sys/types.h>
6: #include <sys/socket.h>
7: #include <sys/time.h>
8: #include <netinet/in.h>
9: #include <netdb.h>
10: #include <signal.h>
11: #include <setjmp.h>
12: /* -lnsl -lsocket /usr/ucblib/libucb.a */
13: #include "ox_kan.h"
14: #include "serversm.h"
15:
1.4 takayama 16: #define SERVERNAME "ox_sm1"
1.1 maekawa 17:
18: int OxCritical = 0;
19: int OxInterruptFlag = 0;
20:
21: int SerialCurrentControl;
22:
23: int MyServerPid;
1.4 takayama 24: #define SERVERNAME_SIZE 4096
25: char ServerName[SERVERNAME_SIZE];
1.1 maekawa 26: int PacketMonitor = 0;
27: int Quiet = 0;
28:
29: int LocalMode = 1;
30: int NotifyPortnumber = 0;
1.4 takayama 31: int Do_not_use_control_stream_to_tell_no_server = 1;
32: static void errorToStartEngine(void);
33: static int findOxServer(char *server);
34: static void couldNotFind(char *s);
1.8 ! takayama 35: #if defined(__CYGWIN__)
! 36: int errno;
! 37: #endif
! 38: /* gcc -v -c hoge.c */
1.1 maekawa 39:
40: main(int argc, char *argv[]) {
41: int fd;
42: int size;
43: char sname[1024];
44: int tmp[1];
45: char *buf;
46: int i;
47: int fdControl = -1; int portControl = 1200;
48: int fdStream = -1; int portStream = 1300;
49: int reverse = 0;
50: extern int OpenedSocket;
51: char portfile[1024];
52: char *pass;
1.4 takayama 53: int result;
1.1 maekawa 54:
55: strcpy(sname,"localhost");
56: strcpy(ServerName,SERVERNAME);
57: i = 1;
1.2 takayama 58: if (argc == 1) {
59: oxmainUsage();
60: exit();
61: }
1.1 maekawa 62: while (i<argc) {
63: if (strcmp(argv[i],"-host") == 0) {
64: i++;
65: if (i<argc) strcpy(sname,argv[i]);
66: }else if (strcmp(argv[i],"-data")==0) {
67: i++;
68: if (i<argc) sscanf(argv[i],"%d",&portStream);
69: }else if (strcmp(argv[i],"-control")==0) {
70: i++;
71: if (i<argc) sscanf(argv[i],"%d",&portControl);
72: }else if (strcmp(argv[i],"-ox") == 0) {
73: i++;
74: if (i<argc) strcpy(ServerName,argv[i]);
75: }else if (strcmp(argv[i],"-monitor") == 0) {
76: PacketMonitor = 1;
77: }else if (strcmp(argv[i],"-insecure") == 0) {
78: LocalMode = 0;
79: }else if (strcmp(argv[i],"-reverse") == 0) {
80: reverse = 1;
81: }else if (strcmp(argv[i],"-portfile") == 0) {
82: i++;
83: if (i<argc) {
1.7 takayama 84: sscanf(argv[i],"%s",portfile);
85: portControl = 0;
86: portStream = 0;
87: NotifyPortnumber = 1;
1.1 maekawa 88: }
89: }else if (strcmp(argv[i],"-pass") == 0) {
90: i++;
91: if (i<argc) {
1.7 takayama 92: pass = argv[i];
1.1 maekawa 93: }
94: }else {
95: fprintf(stderr,"Unknown option %s.\n",argv[i]);
96: oxmainUsage(); exit(10);
97: }
98: i++;
99: }
100:
1.4 takayama 101: if (Do_not_use_control_stream_to_tell_no_server) {
1.7 takayama 102: if (findOxServer(ServerName) < 0) {
103: fprintf(stderr,"Sleeping five seconds...\n");
104: sleep(5);
105: exit(-1);
106: }
1.4 takayama 107: }
108:
1.1 maekawa 109: if (reverse) {
110: /* The order is very important. */
111: fdControl = socketConnectWithPass(sname,portControl,pass);
112: fdStream = socketConnectWithPass(sname,portStream,pass);
113:
114: fprintf(stderr,"Connected: control = %d, data = %d.\n",fdControl,fdStream);
1.7 takayama 115: result = 0;
1.5 takayama 116:
117:
1.1 maekawa 118: if (portControl != -1) {
119: MyServerPid = fork();
120: if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
1.4 takayama 121: else result=childServerMain(fdControl,fdStream);
1.1 maekawa 122: }else{
1.4 takayama 123: result=childServerMain(fdControl,fdStream);
1.1 maekawa 124: }
1.4 takayama 125: /* This line will be never executed in case of success */
1.7 takayama 126: if (result < 0 ) {
127: errorToStartEngine();
128: }
1.1 maekawa 129: }
130:
131: /* non-reverse case. */
132: fprintf(stderr,"Hostname is %s \n",sname);
133: fprintf(stderr,"Port for data (-data) = %d \n",portStream);
134: fprintf(stderr,"Port for control message (-control) = %d \n",portControl);
135: fflush(NULL);
136:
137:
138: if (LocalMode) {
139: if (portControl != -1) {
140: fdControl = socketOpen(sname,portControl);
141: portControl = OpenedSocket;
142: if (NotifyPortnumber) {
1.7 takayama 143: oxWritePortFile(0,portControl,portfile);
1.1 maekawa 144: }
145: fdControl = socketAcceptLocal(fdControl);
146: fprintf(stderr,"\n control port %d : Connected.\n",portControl);
147: }
148: if (portStream != -1) {
149: fdStream = socketOpen(sname,portStream);
150: portStream = OpenedSocket;
151: if (NotifyPortnumber) {
1.7 takayama 152: oxWritePortFile(1,portStream,portfile);
1.1 maekawa 153: }
154: fdStream = socketAcceptLocal(fdStream);
155: fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
156: }
157: }else{
158: if (portControl != -1) {
159: fdControl = socketOpen(sname,portControl);
160: portControl = OpenedSocket;
161: if (NotifyPortnumber) {
1.7 takayama 162: oxWritePortFile(0,portControl,portfile);
1.1 maekawa 163: }
164: fdControl = socketAccept(fdControl);
165: fprintf(stderr,"\n control port %d : Connected.\n",portControl);
166: }
167: if (portStream != -1) {
168: fdStream = socketOpen(sname,portStream);
169: portStream = OpenedSocket;
170: if (NotifyPortnumber) {
1.7 takayama 171: oxWritePortFile(1,portStream,portfile);
1.1 maekawa 172: }
173: fdStream = socketAccept(fdStream);
174: fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
175: }
176: }
177:
178:
1.4 takayama 179: result = 0;
1.1 maekawa 180: if (portControl != -1) {
181: MyServerPid = fork();
182: if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
1.4 takayama 183: else result = childServerMain(fdControl,fdStream);
1.1 maekawa 184: }else{
1.4 takayama 185: result = childServerMain(fdControl,fdStream);
1.1 maekawa 186: }
1.4 takayama 187: if (result < 0) errorToStartEngine();
188: }
1.1 maekawa 189:
1.4 takayama 190: static void errorToStartEngine(void) {
191: fprintf(stderr,"Failed to start the engine. Childing process is terminating.\n");
192: /* You have to tell to the control server that there is no engine.
1.7 takayama 193: And, the control server must tell the client that there is no
194: engine.
195: This part has not yet been implemented.
196: If you implement this, set Do_not_use_control_stream_to_tell_no_server to
197: zero.
198: */
1.4 takayama 199: sleep(2);
200: exit(-1);
1.1 maekawa 201: }
202:
203: oxmainUsage() {
204: fprintf(stderr,"Usage: \n");
205: fprintf(stderr," ox [-ox serverprogram -host name -data portnum -control portnum -monitor]\n");
206: fprintf(stderr," [-insecure -portfile fname -reverse -pass xxxyyyzzz]");
207: fprintf(stderr,"\n");
1.2 takayama 208: fprintf(stderr,"-reverse: ox server connects to the client.\n");
209: fprintf(stderr," The client must give a one time password to ox server to connect to the client with -pass option.\n");
210: 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");
211: 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");
212: fprintf(stderr," If -reverse is not given, the client connect to the ox server\n");
213: fprintf(stderr," See OpenXM/src/SSkan/Doc/ox.sm1, /sm1connectr\n");
214: fprintf(stderr,"-insecure : \n");
215: 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 216: fprintf(stderr,"\n");
217: 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");
218: fprintf(stderr,"\n");
1.2 takayama 219: fprintf(stderr,"Example 1:\n");
1.3 takayama 220: 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 221: fprintf(stderr,"(client): sm1\n ");
222: fprintf(stderr," (ox.sm1) run ; \n");
1.1 maekawa 223: fprintf(stderr," sm1>[(dc1.math.kobe-u.ac.jp) 1300 1200] oxconnect /ox.ccc set\n");
1.2 takayama 224: fprintf(stderr,"Example 2:\n");
225: fprintf(stderr,"(Start the ox server): dc1%% ox -ox ~/OpenXM/bin/ox_sm1\n");
226: fprintf(stderr,"(client): dc1%% sm1\n ");
227: fprintf(stderr," (ox.sm1) run ; \n");
228: fprintf(stderr," sm1>[(localhost) 1300 1200] oxconnect /ox.ccc set\n");
1.1 maekawa 229: fprintf(stderr,"\n");
230: }
231:
232: parentServerMain(int fdControl, int fdStream) {
233: int id;
234: int mtag;
235: int size;
236: int n;
237: int r;
238: int message = 1;
239: int controlByteOrder;
240:
241: extern void myServerExit();
242:
243: controlByteOrder = oxTellMyByteOrder(fdControl);
244: /* Set the network byte order. */
245: fprintf(stderr,"controlByteOrder=%x\n",controlByteOrder);
246:
247:
248: signal(SIGINT,myServerExit);
249: while(1) {
250: mtag = oxfdGetOXheader(fdControl,&SerialCurrentControl);
251: /* get the message_tag */
252: /* message_body */
253: id = oxfdGetInt32(fdControl); /* get the function_id */
254: if (message) {printf("\n[control] control function_id is %d\n",id);}
255: switch( id ) {
256: case SM_control_kill:
257: if (message) printf("[control] control_kill\n");
258: oxSendResultOfControl(fdControl);
259: sleep(2);
260: myServerExit();
261: break;
262: case SM_control_reset_connection:
263: if (message) printf("[control] control_reset_connection.\n");
264: if (message) printf("Sending the SIGUSR1 signal to %d: ",MyServerPid);
265: r=kill(MyServerPid,SIGUSR1);
266: if (message) printf("Result = %d\n",r);
267: fflush(NULL);
1.7 takayama 268: /* oxSendResultOfControlInt32(fdControl,0); */
1.1 maekawa 269: break;
270: default:
271: fprintf(stderr,"[control] Unknown control message.\n");
272: fprintf(stderr,"Shutdown the server.");
273: myServerExit();
274: break;
275: }
276: }
277: }
278:
279: void myServerExit() {
280: printf("Sending the kill signal to the child.\n");
281: kill(MyServerPid,SIGKILL);
282: exit();
283: }
284:
285: childServerMain(int fdControl, int fdStream) {
286: int i;
287: close(fdControl); /* close(0); dup(fdStream); */
288: dup2(fdStream,3);
289: dup2(fdStream,4);
1.4 takayama 290: /*close(0);
1.7 takayama 291: #include <sys/param.h>
292: for (i=5; i<NOFILE; i++) close(i);
293: */
1.4 takayama 294: if (!Do_not_use_control_stream_to_tell_no_server) {
1.7 takayama 295: if (findOxServer(ServerName) < 0) {
296: return(-1);
297: }
1.4 takayama 298: }
1.5 takayama 299: fprintf(stderr,"childServerMain: Starting the server %s\n",ServerName); fflush(NULL);
1.1 maekawa 300: if (PacketMonitor) {
301: if (execl(ServerName,ServerName,"-monitor",NULL)) {
302: fprintf(stderr,"%s cannot be executed with -monitor.\n",ServerName);
1.7 takayama 303: fflush(NULL);
304: return(-1);
1.1 maekawa 305: }
306: }else {
307: if (execl(ServerName,ServerName,NULL)) {
308: fprintf(stderr,"%s cannot be executed.\n",ServerName);
1.7 takayama 309: fflush(NULL);
310: return(-1);
1.1 maekawa 311: }
312: }
1.4 takayama 313: /* never reached. */
1.1 maekawa 314: }
315:
316:
317: /* These are dummy. It is defined in stackmachine.c */
318: unlockCtrlCForOx() { ; }
319: restoreLockCtrlCForOx() { ; }
320:
1.4 takayama 321: static int findOxServer(char *server) {
322: char *p;
323: char *p2;
324: int fd;
325: char *getenv(char *s);
326: if (strlen(server) == 0) return(-1);
327: fd = open(server,O_RDONLY);
328: if (fd >= 0) {
1.7 takayama 329: fprintf(stderr,"Starting OX server : %s\n",server);
330: close(fd);
331: return(0);
1.4 takayama 332: }
333: if (server[0] == '/') {
1.7 takayama 334: couldNotFind(server);
335: return(-1);
1.4 takayama 336: }
337: fprintf(stderr,"The server %s was not found. Trying to find it under OpenXM/bin\n",server);
338: p = getenv("OpenXM_HOME");
339: if (p == NULL) {
340: p = "/usr/local/OpenXM";
341: }
342: p2 = (char *) malloc(sizeof(char)*(strlen(p)+strlen("/bin/")+3+strlen(server)));
343: if (p2 == NULL) { fprintf(stderr,"No more memory.\n"); exit(10); }
344: strcpy(p2,p); strcat(p2,"/bin/"); strcat(p2,server);
345: fd = open(p2,O_RDONLY);
346: if (fd >= 0) {
1.7 takayama 347: fprintf(stderr,"Starting OX server : %s\n",p2);
348: if (strlen(p2) < SERVERNAME_SIZE) strcpy(server,p2);
349: else {
350: couldNotFind("Too long ox server name.");
351: return(-1);
352: }
353: close(fd);
354: return(0);
1.4 takayama 355: }
356: couldNotFind(p2);
357: return(-1);
358: }
1.1 maekawa 359:
1.4 takayama 360: static void couldNotFind(char *s) {
361: fprintf(stderr,"OX server %s could not be found.\n",s);
362: }
1.1 maekawa 363:
364:
365:
366:
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