Annotation of OpenXM/src/kan96xx/Kan/ext.c, Revision 1.23
1.23 ! takayama 1: /* $OpenXM: OpenXM/src/kan96xx/Kan/ext.c,v 1.22 2004/02/25 23:14:35 takayama Exp $ */
1.1 maekawa 2: #include <stdio.h>
3: #include <sys/types.h>
4: #include <sys/stat.h>
5: #include <fcntl.h>
6: #include <stdlib.h>
7: #include <unistd.h>
8: #include <sys/wait.h>
9: #include "datatype.h"
10: #include "stackm.h"
11: #include "extern.h"
12: #include "extern2.h"
13: #include <signal.h>
14: #include "plugin.h"
1.17 takayama 15: #include "kclass.h"
1.10 takayama 16: #include <ctype.h>
1.22 takayama 17: #include <errno.h>
1.15 takayama 18: #include "ox_pathfinder.h"
1.1 maekawa 19:
1.23 ! takayama 20: extern int Quiet;
1.14 takayama 21: extern char **environ;
22:
1.1 maekawa 23: #define MYCP_SIZE 100
24: static int Mychildren[MYCP_SIZE];
25: static int Mycp = 0;
26: static void mywait() {
27: int status;
28: int pid;
29: int i,j;
1.20 takayama 30: /* signal(SIGCHLD,SIG_IGN); */
1.1 maekawa 31: pid = wait(&status);
1.23 ! takayama 32: if (!Quiet) fprintf(stderr,"Child process %d is exiting.\n",pid);
1.1 maekawa 33: for (i=0; i<Mycp; i++) {
34: if (Mychildren[i] == pid) {
35: for (j=i; j<Mycp-1; j++) {
1.5 takayama 36: Mychildren[j] = Mychildren[j+1];
1.1 maekawa 37: }
38: if (Mycp > 0) Mycp--;
39: }
40: }
41: signal(SIGCHLD,mywait);
42: }
43:
44: #define SIZE_OF_ENVSTACK 5
1.9 takayama 45: #if defined(__CYGWIN__)
46: #define JMP_BUF sigjmp_buf
47: #else
48: #define JMP_BUF jmp_buf
49: #endif
50: static JMP_BUF EnvStack[SIZE_OF_ENVSTACK];
1.1 maekawa 51: static int Envp = 0;
1.9 takayama 52: static void pushEnv(JMP_BUF jb) {
1.1 maekawa 53: if (Envp < SIZE_OF_ENVSTACK) {
54: *(EnvStack[Envp]) = *jb;
55: Envp++;
56: }else{
57: fprintf(stderr,"Overflow of EnvStack.\n");
58: exit(2);
59: }
60: }
1.9 takayama 61: static void popEnv(JMP_BUF jbp) {
1.1 maekawa 62: if (Envp <= 0) {
63: fprintf(stderr,"Underflow of EnvStack.\n");
64: exit(3);
65: }else{
66: Envp--;
67: *jbp = *EnvStack[Envp];
68: }
69: }
70:
71: static char *ext_generateUniqueFileName(char *s)
72: {
73: char *t;
74: int i;
75: struct stat statbuf;
76: t = (char *)sGC_malloc(sizeof(char)*strlen(s)+4+2);
77: for (i=0; i<1000; i++) {
78: /* Give up if we failed for 1000 names. */
79: sprintf(t,"%s.%d",s,i);
80: /* if (phc_overwrite) return(t); */
81: if (stat(t,&statbuf) < 0) {
82: return(t);
83: }
84: }
85: errorKan1("%s\n","ext_generateUniqueFileName: could not generate a unique file name. Exhausted all the names.");
86: return(NULL);
87: }
88:
89: struct object Kextension(struct object obj)
90: {
91: char *key;
92: int size;
93: struct object keyo;
94: struct object rob = NullObject;
95: struct object obj1,obj2,obj3,obj4;
1.13 takayama 96: int m,i,pid, uid;
1.1 maekawa 97: int argListc, fdListc;
98: char *abc;
99: char *abc2;
100: extern struct context *CurrentContextp;
1.9 takayama 101: #if (__CYGWIN__)
102: extern sigjmp_buf EnvOfStackMachine;
103: #else
1.1 maekawa 104: extern jmp_buf EnvOfStackMachine;
1.9 takayama 105: #endif
1.1 maekawa 106: extern void ctrlC();
107: extern int SigIgn;
108: extern int DebugCMO;
109: extern int OXprintMessage;
110: struct stat buf;
111: char **argv;
112: FILE *fp;
1.3 takayama 113: void (*oldsig)();
114: extern SecureMode;
1.1 maekawa 115:
116: if (obj.tag != Sarray) errorKan1("%s\n","Kextension(): The argument must be an array.");
117: size = getoaSize(obj);
118: if (size < 1) errorKan1("%s\n","Kextension(): Empty array.");
119: keyo = getoa(obj,0);
120: if (keyo.tag != Sdollar) errorKan1("%s\n","Kextension(): No key word.");
121: key = KopString(keyo);
122:
123: /* branch by they key word. */
124: if (strcmp(key,"parse")==0) {
125: if (size != 2) errorKan1("%s\n","[(parse) string] extension.");
126: obj1 = getoa(obj,1);
127: if (obj1.tag != Sdollar) errorKan1("%s\n","[(parse) string] extension");
128:
129: pushEnv(EnvOfStackMachine);
130: m = KSexecuteString(obj1.lc.str);
131: /* This is critical area. If you catch ctrl-c here, program crashes. */
132: oldsig = signal(SIGINT,SIG_IGN);
133: popEnv(EnvOfStackMachine);
134: /* OK! We passed the critical area. */
135: signal(SIGINT,oldsig);
136: rob = KpoInteger(m);
137: }else if (strcmp(key,"getpid") == 0) {
138: rob = KpoInteger( (int) getpid() );
139: }else if (strcmp(key,"flush") == 0) {
140: /* fflush(NULL); */
141: fflush(stdout);
142: rob.tag = Snull;
143: }else if (strcmp(key,"chattrs")==0) {
144: if (size != 2) errorKan1("%s\n","[(chattrs) num] extension.");
145: obj1 = getoa(obj,1);
146: if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattrs) num] extension.");
147: m = KopInteger(obj1);
148: if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))
149: errorKan1("%s\n","The number must be 0, 1 or 2.");
150: putUserDictionary2((char *)NULL,0,0,m | SET_ATTR_FOR_ALL_WORDS,
1.5 takayama 151: CurrentContextp->userDictionary);
1.1 maekawa 152: }else if (strcmp(key,"keywords")==0) {
153: if (size != 1) errorKan1("%s\n","[(keywords)] extension.");
154: rob = showSystemDictionary(1);
155: /* }else if (strcmp(key,"fork0")==0) {
1.5 takayama 156: if (size != 2) errorKan1("%s\n","[(fork0) sss] extension.");
157: m = fork();
158: if (m>0) { rob = KpoInteger(m); }
159: else {
160: system(KopString(getoa(obj,1))); exit(0);
161: } */
162: }else if (strcmp(key,"defaultPolyRing")==0) {
163: if (size != 2) errorKan1("%s\n","[(defaultPolyRing) n] extension.");
164: rob = KdefaultPolyRing(getoa(obj,1));
165: }else if (strcmp(key,"getenv")==0) {
166: if (size != 2) errorKan1("%s\n","[(getenv) envstr] extension.");
167: obj1 = getoa(obj,1);
168: if (obj1.tag != Sdollar) errorKan1("%s\n","[(getenv) envstr] extension");
169: abc = getenv(KopString(obj1));
1.10 takayama 170: #if defined(__CYGWIN__)
171: if (abc == NULL) {
1.11 takayama 172: abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(KopString(obj1))+2));
1.10 takayama 173: strcpy(abc2,KopString(obj1));
174: for (i=0; i<strlen(abc2); i++) {
175: abc2[i] = toupper(abc2[i]);
176: }
177: abc = getenv(abc2);
178: }
179: #endif
1.5 takayama 180: if (abc == NULL) {
181: rob = NullObject;
182: }else{
183: abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(abc)+2));
184: strcpy(abc2,abc);
185: rob = KpoString(abc2);
186: }
187: }else if (strcmp(key,"stat")==0) {
188: if (size != 2) errorKan1("%s\n","[(stat) fname] extension.");
189: obj1 = getoa(obj,1);
190: if (obj1.tag != Sdollar) errorKan1("%s\n","[(stat) fname] extension ; string fname.");
191: m = stat(KopString(obj1),&buf);
192: rob = newObjectArray(2);
193: if (m == -1) {
194: /* fail */
195: obj2 = NullObject;
196: putoa(rob,0,obj2);
197: obj3 = newObjectArray(2);
198: putoa(obj3,0,KpoString("error no"));
199: putoa(obj3,1,KpoInteger(errno));
200: putoa(rob,1,obj3);
201: }else{
202: /* success */
203: putoa(rob,0,KpoInteger(0));
204: obj3 = newObjectArray(1);
205: putoa(obj3,0,KpoInteger((int) buf.st_size));
206: putoa(rob,1,obj3); /* We have not yet read buf fully */
207: }
208: }else if (strcmp(key,"forkExec")==0) {
209: if (size != 4) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension.");
210: obj1 = getoa(obj,1);
1.14 takayama 211: if (obj1.tag == Sdollar) {
212: obj1 = KstringToArgv(obj1);
213: }
1.5 takayama 214: if (obj1.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array argList.");
1.14 takayama 215: obj2 = getoa(obj,2);
1.5 takayama 216: if (obj2.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array fdList.");
217: obj3 = getoa(obj,3);
218: if (obj3.tag != Sinteger) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. integer sigblock.");
1.7 takayama 219: m = KopInteger(obj3); /* m&1 : block ctrl-C. */
1.5 takayama 220: argListc = getoaSize(obj1);
221: fdListc = getoaSize(obj2);
1.6 takayama 222: if ((pid = fork()) > 0) {
1.5 takayama 223: /* parent */
1.7 takayama 224: if (m&2) {
1.6 takayama 225: /* Do not call singal to turn around a trouble on cygwin. BUG. */
226: }else{
227: signal(SIGCHLD,mywait); /* to kill Zombie */
228: }
229: Mychildren[Mycp++] = pid;
1.5 takayama 230: if (Mycp >= MYCP_SIZE-1) {
231: errorKan1("%s\n","Child process table is full.\n");
232: Mycp = 0;
233: }
1.6 takayama 234: rob = KpoInteger(pid);
1.5 takayama 235: /* Done */
236: }else{
237: /* Child */
238: for (i=0; i<fdListc; i++) {
239: /* close the specified files */
240: close(KopInteger(getoa(obj2,i)));
1.1 maekawa 241: }
1.5 takayama 242: /* execl */
1.7 takayama 243: if (m&1) {
1.5 takayama 244: {
245: sigset_t sss;
246: sigemptyset(&sss);
247: sigaddset(&sss,SIGINT);
248: sigprocmask(SIG_BLOCK,&sss,NULL);
249: }
1.1 maekawa 250: }
1.5 takayama 251: argv = (char **) sGC_malloc(sizeof(char *)*(argListc+1));
252: if (argv == NULL) {
253: fprintf(stderr," no more momory. forkExec --- exiting.\n");
254: _exit(10);
1.1 maekawa 255: }
1.5 takayama 256: for (i=0; i<argListc; i++) {
257: argv[i] = KopString(getoa(obj1,i));
258: argv[i+1] = NULL;
1.7 takayama 259: }
260:
261: if (m&4) {
262: fprintf(stderr,"execv %s\n",argv[0]);
263: sleep(5);
264: fprintf(stderr,">>>\n");
1.1 maekawa 265: }
1.14 takayama 266: execve(argv[0],argv,environ);
1.5 takayama 267: /* This place will never be reached unless execv fails. */
268: fprintf(stderr,"forkExec fails: ");
269: for (i=0; i<argListc; i++) {
270: fprintf(stderr,"%s ",argv[i]);
271: }
272: fprintf(stderr,"\nExiting, but staying as Zombie.\n");
273: _exit(10);
274: }
275: }else if (strcmp(key,"getchild")==0) {
276: if (size != 1) errorKan1("%s\n","[(getchild)] extension.");
277: rob = newObjectArray(Mycp);
278: for (i=0; i<Mycp; i++) {
279: putoa(rob,i,KpoInteger(Mychildren[i]));
1.1 maekawa 280: }
1.5 takayama 281: }else if (strcmp(key,"getUniqueFileName")==0) {
282: if (size != 2) errorKan1("%s\n","[(getUniqueFileName) path] extension.");
283: obj1 = getoa(obj,1);
284: if (obj1.tag != Sdollar) errorKan1("%s\n","[(getUniqueFileName) path] extension. path must be a string.");
285: rob = KpoString(ext_generateUniqueFileName(KopString(obj1)));
286: }else if (strcmp(key,"outputObjectToFile")==0) {
287: if (size != 3) errorKan1("%s\n","[(outputObjectToFile) path obj] extension.");
288: obj1 = getoa(obj,1);
289: if (obj1.tag != Sdollar) errorKan1("%s\n","[(outputObjectToFile) path obj] extension. path must be a string.");
290: obj2 = getoa(obj,2);
291: fp = fopen(KopString(obj1),"w");
292: if (fp == NULL) errorKan1("%s\n","[(outputObjectToFile) path object] extension : could not open the path.");
293: printObject(obj2,0,fp);
294: fclose(fp);
295: rob = NullObject;
296: }else if (strcmp(key,"hilbert")==0) {
297: if (size != 3) errorKan1("%s\n","[(hilbert) obgb obvlist] extension.");
298: rob = hilberto(getoa(obj,1),getoa(obj,2));
1.13 takayama 299: }else if (strcmp(key,"nobody") == 0) {
300: uid = getuid();
301: if (uid == 0) {
302: #define NOBODY 65534
303: /* If I'm a super user, then change uid to nobody. */
304: if (setuid(NOBODY) != 0) {
305: fprintf(stderr,"Failed to change uid to nobody (%d)\n",NOBODY);
306: exit(10);
307: }
308: fprintf(stderr,"uid is changed to nobody (%d).\n",NOBODY);
309: rob.tag = Snull;
310: }
1.5 takayama 311: }else if (strcmp(key,"chattr")==0) {
312: if (size != 3) errorKan1("%s\n","[(chattr) num symbol] extension.");
313: obj1 = getoa(obj,1);
314: obj2 = getoa(obj,2);
315: if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattr) num symbol] extension.");
316: if (obj2.tag != Sstring) errorKan1("%s\n","[(chattr) num symbol] extension.");
317: m = KopInteger(obj1);
318: if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))
319: errorKan1("%s\n","The number must be 0, 1 or 2.");
320: putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,
321: m,CurrentContextp->userDictionary);
1.15 takayama 322: }else if (strcmp(key,"getServerEnv")==0) {
323: if (size != 2) errorKan1("%s\n","[(getServerEnv) serverName] extension.");
324: obj1 = getoa(obj,1);
325: if (obj1.tag != Sdollar) errorKan1("%s\n","[(getServerEnv) serverName] extension.");
326: {
327: char **se; int ii; int nn;
328: se = getServerEnv(KopString(obj1));
329: if (se == NULL) {
330: debugServerEnv(KopString(obj1));
331: rob = NullObject;
332: }else{
333: for (ii=0,nn=0; se[ii] != NULL; ii++) nn++;
334: rob = newObjectArray(nn);
335: for (ii=0; ii<nn; ii++) {
336: putoa(rob,ii,KpoString(se[ii]));
337: }
338: }
339: }
1.12 takayama 340: }else if (strcmp(key,"regionMatches")==0) {
341: if (size != 3) errorKan1("%s\n","[(regionMatches) str strArray] extension.");
342: obj1 = getoa(obj,1);
343: if (obj1.tag != Sdollar) errorKan1("%s\n","[(regionMatches) str strArray] extension. str must be a string.");
344: obj2 = getoa(obj,2);
345: if (obj2.tag != Sarray) errorKan1("%s\n","[(regionMatches) str strArray] extension. strArray must be an array.");
346: rob = KregionMatches(obj1,obj2);
1.16 takayama 347: }else if (strcmp(key,"newVector")==0) {
348: if (size != 2) errorKan1("%s\n","[(newVector) m] extension.");
349: obj1 = getoa(obj,1);
350: if (obj1.tag != Sinteger) errorKan1("%s\n","[(newVector) m] extension. m must be an integer.");
351: rob = newObjectArray(KopInteger(obj1));
352: }else if (strcmp(key,"newMatrix")==0) {
353: if (size != 3) errorKan1("%s\n","[(newMatrix) m n] extension.");
354: obj1 = getoa(obj,1);
355: if (obj1.tag != Sinteger) errorKan1("%s\n","[(newMatrix) m n] extension. m must be an integer.");
356: obj2 = getoa(obj,2);
357: if (obj2.tag != Sinteger) errorKan1("%s\n","[(newMatrix) m n] extension. n must be an integer.");
358: rob = newObjectArray(KopInteger(obj1));
359: for (i=0; i<KopInteger(obj1); i++) {
360: putoa(rob,i,newObjectArray(KopInteger(obj2)));
361: }
1.21 takayama 362: }else if (strcmp(key,"ooPower")==0) {
363: if (size != 3) errorKan1("%s\n","[(ooPower) a b] extension.");
364: obj1 = getoa(obj,1);
365: obj2 = getoa(obj,2);
366: rob = KooPower(obj1,obj2);
1.8 takayama 367: }else if (strcmp(key,"ostype")==0) {
368: rob = newObjectArray(1);
369: /* Hard encode the OS type. */
370: #if defined(__CYGWIN__)
371: putoa(rob,0,KpoString("windows"));
372: #else
373: putoa(rob,0,KpoString("unix"));
374: #endif
1.5 takayama 375: }
1.1 maekawa 376: #include "plugin.hh"
1.17 takayama 377: #include "Kclass/tree.hh"
1.1 maekawa 378: else{
379: errorKan1("%s\n","Unknown tag for extension.");
380: }
381:
382:
383: return(rob);
1.12 takayama 384: }
385:
386: struct object KregionMatches(struct object sobj, struct object keyArray)
387: {
388: struct object rob;
389: int n,i,j,m,keyn;
390: char *s,*key;
391: rob = newObjectArray(3);
392: getoa(rob,0) = KpoInteger(-1);
393: getoa(rob,1) = NullObject;
394: getoa(rob,2) = NullObject;
395:
396: if (sobj.tag != Sdollar) return rob;
397: if (keyArray.tag != Sarray) return rob;
398: n = getoaSize(keyArray);
399: for (i=0; i<n; i++) {
400: if (getoa(keyArray,i).tag != Sdollar) { return rob; }
401: }
402:
403: s = KopString(sobj);
404: m = strlen(s);
405:
406: for (i=0; i<n; i++) {
407: key = KopString(getoa(keyArray,i));
408: keyn = strlen(key);
409: for (j=0; j<m; j++) {
410: if (strncmp(&(s[j]),key,keyn) == 0) {
411: getoa(rob,0) = KpoInteger(j);
412: getoa(rob,1) = KpoString(key);
413: getoa(rob,2) = KpoInteger(i);
414: return rob;
415: }
416: }
417: }
418: return rob;
1.1 maekawa 419: }
420:
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