Commit | Line | Data |
39e571d4 |
1 | #include <libc/stubs.h> |
2 | #include <io.h> |
3 | #include <errno.h> |
4 | #include <stdio.h> |
5 | #include <stdlib.h> |
6 | #include <string.h> |
7 | #include <unistd.h> |
8 | #include <libc/file.h> |
9 | #include <process.h> |
10 | #include <fcntl.h> |
11 | #include <glob.h> |
12 | #include <sys/fsext.h> |
13 | #include <crt0.h> |
14 | #include "EXTERN.h" |
15 | #include "perl.h" |
16 | #include "XSUB.h" |
17 | |
9731c6ca |
18 | /* hold file pointer, command, mode, and the status of the command */ |
39e571d4 |
19 | struct pipe_list { |
20 | FILE *fp; |
39e571d4 |
21 | int exit_status; |
39e571d4 |
22 | struct pipe_list *next; |
9731c6ca |
23 | char *command, mode; |
39e571d4 |
24 | }; |
25 | |
26 | /* static, global list pointer */ |
27 | static struct pipe_list *pl = NULL; |
28 | |
29 | FILE * |
30 | popen (const char *cm, const char *md) /* program name, pipe mode */ |
31 | { |
32 | struct pipe_list *l1; |
9731c6ca |
33 | int fd; |
34 | char *temp_name=NULL; |
39e571d4 |
35 | |
36 | /* make new node */ |
9731c6ca |
37 | if ((l1 = (struct pipe_list *) malloc (sizeof (*l1))) |
38 | && (temp_name = malloc (L_tmpnam)) && tmpnam (temp_name)) |
39e571d4 |
39 | { |
9731c6ca |
40 | l1->fp = NULL; |
41 | l1->command = NULL; |
42 | l1->next = pl; |
43 | l1->exit_status = -1; |
44 | l1->mode = md[0]; |
45 | |
39e571d4 |
46 | /* if caller wants to read */ |
9731c6ca |
47 | if (md[0] == 'r' && (fd = dup (fileno (stdout))) >= 0) |
39e571d4 |
48 | { |
9731c6ca |
49 | if ((l1->fp = freopen (temp_name, "wb", stdout))) |
39e571d4 |
50 | { |
9731c6ca |
51 | l1->exit_status = system (cm); |
52 | if (dup2 (fd, fileno (stdout)) >= 0) |
53 | l1->fp = fopen (temp_name, md); |
39e571d4 |
54 | } |
9731c6ca |
55 | close (fd); |
56 | } |
57 | /* if caller wants to write */ |
58 | else if (md[0] == 'w' && (l1->command = malloc (1 + strlen (cm)))) |
59 | { |
60 | strcpy (l1->command, cm); |
61 | l1->fp = fopen (temp_name, md); |
62 | } |
63 | |
64 | if (l1->fp) |
65 | { |
66 | l1->fp->_flag |= _IORMONCL; /* remove on close */ |
67 | l1->fp->_name_to_remove = temp_name; |
68 | return (pl = l1)->fp; |
39e571d4 |
69 | } |
9731c6ca |
70 | free (l1->command); |
39e571d4 |
71 | } |
9731c6ca |
72 | free (temp_name); |
73 | free (l1); |
74 | return NULL; |
39e571d4 |
75 | } |
76 | |
77 | int |
78 | pclose (FILE *pp) |
79 | { |
9731c6ca |
80 | struct pipe_list *l1, **l2; /* list pointers */ |
81 | int retval=-1; /* function return value */ |
39e571d4 |
82 | |
9731c6ca |
83 | for (l2 = &pl; *l2 && (*l2)->fp != pp; l2 = &((*l2)->next)) |
84 | ; |
85 | if (!(l1 = *l2)) |
86 | return retval; |
87 | *l2 = l1->next; |
39e571d4 |
88 | |
9731c6ca |
89 | /* if pipe was opened to write */ |
90 | if (l1->mode == 'w') |
39e571d4 |
91 | { |
9731c6ca |
92 | int fd; |
93 | fflush (l1->fp); |
94 | close (fileno (l1->fp)); |
39e571d4 |
95 | |
9731c6ca |
96 | if ((fd = dup (fileno (stdin))) >= 0 |
97 | && (freopen (l1->fp->_name_to_remove, "rb", stdin))) |
39e571d4 |
98 | { |
9731c6ca |
99 | retval = system (l1->command); |
100 | dup2 (fd, fileno (stdin)); |
39e571d4 |
101 | } |
9731c6ca |
102 | close (fd); |
103 | free (l1->command); |
39e571d4 |
104 | } |
9731c6ca |
105 | else |
106 | /* if pipe was opened to read, return the exit status we saved */ |
107 | retval = l1->exit_status; |
39e571d4 |
108 | |
9731c6ca |
109 | fclose (l1->fp); /* this removes the temp file */ |
110 | free (l1); |
111 | return retval; /* retval==0 ? OK : ERROR */ |
39e571d4 |
112 | } |
113 | |
39e571d4 |
114 | /**/ |
115 | |
116 | #define EXECF_SPAWN 0 |
117 | #define EXECF_EXEC 1 |
118 | |
119 | static int |
41cd3736 |
120 | convretcode (pTHX_ int rc,char *prog,int fl) |
39e571d4 |
121 | { |
0453d815 |
122 | if (rc < 0 && ckWARN(WARN_EXEC)) |
123 | Perl_warner(aTHX_ WARN_EXEC,"Can't %s \"%s\": %s", |
124 | fl ? "exec" : "spawn",prog,Strerror (errno)); |
706de38c |
125 | if (rc >= 0) |
933fea7f |
126 | return rc << 8; |
706de38c |
127 | return -1; |
39e571d4 |
128 | } |
129 | |
130 | int |
41cd3736 |
131 | do_aspawn (pTHX_ SV *really,SV **mark,SV **sp) |
39e571d4 |
132 | { |
133 | dTHR; |
134 | int rc; |
135 | char **a,*tmps,**argv; |
2d8e6c8d |
136 | STRLEN n_a; |
39e571d4 |
137 | |
138 | if (sp<=mark) |
139 | return -1; |
140 | a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); |
141 | |
142 | while (++mark <= sp) |
143 | if (*mark) |
2d8e6c8d |
144 | *a++ = SvPVx(*mark, n_a); |
39e571d4 |
145 | else |
146 | *a++ = ""; |
147 | *a = Nullch; |
148 | |
149 | if (argv[0][0] != '/' && argv[0][0] != '\\' |
150 | && !(argv[0][0] && argv[0][1] == ':' |
151 | && (argv[0][2] == '/' || argv[0][2] != '\\')) |
152 | ) /* will swawnvp use PATH? */ |
153 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
154 | |
2d8e6c8d |
155 | if (really && *(tmps = SvPV(really, n_a))) |
39e571d4 |
156 | rc=spawnvp (P_WAIT,tmps,argv); |
157 | else |
158 | rc=spawnvp (P_WAIT,argv[0],argv); |
159 | |
160 | return convretcode (rc,argv[0],EXECF_SPAWN); |
161 | } |
162 | |
163 | #define EXTRA "\x00\x00\x00\x00\x00\x00" |
164 | |
165 | int |
41cd3736 |
166 | do_spawn2 (pTHX_ char *cmd,int execf) |
39e571d4 |
167 | { |
168 | char **a,*s,*shell,*metachars; |
169 | int rc,unixysh; |
170 | |
171 | if ((shell=getenv("SHELL"))==NULL && (shell=getenv("COMSPEC"))==NULL) |
172 | shell="c:\\command.com" EXTRA; |
173 | |
174 | unixysh=_is_unixy_shell (shell); |
175 | metachars=unixysh ? "$&*(){}[]'\";\\?>|<~`\n" EXTRA : "*?[|<>\"\\" EXTRA; |
176 | |
177 | while (*cmd && isSPACE(*cmd)) |
178 | cmd++; |
179 | |
180 | if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) |
181 | cmd+=5; |
182 | |
183 | /* save an extra exec if possible */ |
184 | /* see if there are shell metacharacters in it */ |
185 | if (strstr (cmd,"...")) |
186 | goto doshell; |
187 | if (unixysh) |
188 | { |
189 | if (*cmd=='.' && isSPACE (cmd[1])) |
190 | goto doshell; |
191 | if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) |
192 | goto doshell; |
193 | for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ |
194 | if (*s=='=') |
195 | goto doshell; |
196 | } |
197 | for (s=cmd; *s; s++) |
198 | if (strchr (metachars,*s)) |
199 | { |
200 | if (*s=='\n' && s[1]=='\0') |
201 | { |
202 | *s='\0'; |
203 | break; |
204 | } |
205 | doshell: |
206 | if (execf==EXECF_EXEC) |
207 | return convretcode (execl (shell,shell,unixysh ? "-c" : "/c",cmd,NULL),cmd,execf); |
208 | return convretcode (system (cmd),cmd,execf); |
209 | } |
210 | |
6b88bc9c |
211 | New (1303,PL_Argv,(s-cmd)/2+2,char*); |
212 | PL_Cmd=savepvn (cmd,s-cmd); |
213 | a=PL_Argv; |
214 | for (s=PL_Cmd; *s;) { |
39e571d4 |
215 | while (*s && isSPACE (*s)) s++; |
216 | if (*s) |
217 | *(a++)=s; |
218 | while (*s && !isSPACE (*s)) s++; |
219 | if (*s) |
220 | *s++='\0'; |
221 | } |
222 | *a=Nullch; |
6b88bc9c |
223 | if (!PL_Argv[0]) |
39e571d4 |
224 | return -1; |
225 | |
226 | if (execf==EXECF_EXEC) |
6b88bc9c |
227 | rc=execvp (PL_Argv[0],PL_Argv); |
39e571d4 |
228 | else |
6b88bc9c |
229 | rc=spawnvp (P_WAIT,PL_Argv[0],PL_Argv); |
230 | return convretcode (rc,PL_Argv[0],execf); |
39e571d4 |
231 | } |
232 | |
233 | int |
41cd3736 |
234 | do_spawn (pTHX_ char *cmd) |
39e571d4 |
235 | { |
41cd3736 |
236 | return do_spawn2 (aTHX_ cmd,EXECF_SPAWN); |
39e571d4 |
237 | } |
238 | |
239 | bool |
41cd3736 |
240 | Perl_do_exec (pTHX_ char *cmd) |
39e571d4 |
241 | { |
41cd3736 |
242 | do_spawn2 (aTHX_ cmd,EXECF_EXEC); |
39e571d4 |
243 | return FALSE; |
244 | } |
245 | |
246 | /**/ |
247 | |
248 | struct globinfo |
249 | { |
250 | int fd; |
251 | char *matches; |
252 | size_t size; |
933fea7f |
253 | fpos_t pos; |
39e571d4 |
254 | }; |
255 | |
256 | #define MAXOPENGLOBS 10 |
257 | |
258 | static struct globinfo myglobs[MAXOPENGLOBS]; |
259 | |
260 | static struct globinfo * |
261 | searchfd (int fd) |
262 | { |
263 | int ic; |
264 | for (ic=0; ic<MAXOPENGLOBS; ic++) |
265 | if (myglobs[ic].fd==fd) |
266 | return myglobs+ic; |
267 | return NULL; |
268 | } |
269 | |
270 | static int |
271 | glob_handler (__FSEXT_Fnumber n,int *rv,va_list args) |
272 | { |
273 | unsigned ic; |
274 | struct globinfo *gi; |
275 | switch (n) |
276 | { |
277 | case __FSEXT_open: |
278 | { |
279 | char *p1,*pattern,*name=va_arg (args,char*); |
280 | STRLEN len; |
281 | glob_t pglob; |
282 | |
283 | if (strnNE (name,"/dev/dosglob/",13)) |
284 | break; |
285 | if ((gi=searchfd (-1)) == NULL) |
286 | break; |
287 | |
933fea7f |
288 | gi->pos=0; |
39e571d4 |
289 | pattern=alloca (strlen (name+=13)+1); |
290 | strcpy (pattern,name); |
291 | if (!_USE_LFN) |
292 | strlwr (pattern); |
293 | ic=pglob.gl_pathc=0; |
294 | pglob.gl_pathv=NULL; |
295 | while (pattern) |
296 | { |
297 | if ((p1=strchr (pattern,' '))!=NULL) |
298 | *p1=0; |
299 | glob (pattern,ic,0,&pglob); |
300 | ic=GLOB_APPEND; |
301 | if ((pattern=p1)!=NULL) |
302 | pattern++; |
303 | } |
304 | for (ic=len=0; ic<pglob.gl_pathc; ic++) |
305 | len+=1+strlen (pglob.gl_pathv[ic]); |
306 | if (len) |
307 | { |
308 | if ((gi->matches=p1=(char*) malloc (gi->size=len))==NULL) |
309 | break; |
310 | for (ic=0; ic<pglob.gl_pathc; ic++) |
311 | { |
312 | strcpy (p1,pglob.gl_pathv[ic]); |
313 | p1+=strlen (p1)+1; |
314 | } |
315 | } |
316 | else |
317 | { |
318 | if ((gi->matches=strdup (name))==NULL) |
319 | break; |
320 | gi->size=strlen (name)+1; |
321 | } |
322 | globfree (&pglob); |
323 | gi->fd=*rv=__FSEXT_alloc_fd (glob_handler); |
324 | return 1; |
325 | } |
326 | case __FSEXT_read: |
327 | { |
328 | int fd=va_arg (args,int); |
329 | char *buf=va_arg (args,char*); |
330 | size_t siz=va_arg (args,size_t); |
331 | |
332 | if ((gi=searchfd (fd))==NULL) |
333 | break; |
334 | |
933fea7f |
335 | if (siz+gi->pos > gi->size) |
336 | siz = gi->size - gi->pos; |
337 | memcpy (buf,gi->pos+gi->matches,siz); |
338 | gi->pos += siz; |
39e571d4 |
339 | *rv=siz; |
340 | return 1; |
341 | } |
342 | case __FSEXT_close: |
343 | { |
344 | int fd=va_arg (args,int); |
345 | |
346 | if ((gi=searchfd (fd))==NULL) |
347 | break; |
348 | free (gi->matches); |
349 | gi->fd=-1; |
350 | break; |
351 | } |
352 | default: |
353 | break; |
354 | } |
355 | return 0; |
356 | } |
357 | |
358 | static |
359 | XS(dos_GetCwd) |
360 | { |
361 | dXSARGS; |
362 | |
363 | if (items) |
41cd3736 |
364 | Perl_croak (aTHX_ "Usage: Dos::GetCwd()"); |
39e571d4 |
365 | { |
366 | char tmp[PATH_MAX+2]; |
367 | ST(0)=sv_newmortal (); |
368 | if (getcwd (tmp,PATH_MAX+1)!=NULL) |
369 | sv_setpv ((SV*)ST(0),tmp); |
370 | } |
371 | XSRETURN (1); |
372 | } |
373 | |
374 | static |
375 | XS(dos_UseLFN) |
376 | { |
377 | dXSARGS; |
378 | XSRETURN_IV (_USE_LFN); |
379 | } |
380 | |
381 | void |
41cd3736 |
382 | Perl_init_os_extras(pTHX) |
39e571d4 |
383 | { |
384 | char *file = __FILE__; |
385 | |
386 | dXSUB_SYS; |
387 | |
388 | newXS ("Dos::GetCwd",dos_GetCwd,file); |
389 | newXS ("Dos::UseLFN",dos_UseLFN,file); |
390 | |
391 | /* install my File System Extension for globbing */ |
392 | __FSEXT_add_open_handler (glob_handler); |
393 | memset (myglobs,-1,sizeof (myglobs)); |
394 | } |
395 | |
396 | static char *perlprefix; |
397 | |
398 | #define PERL5 "/perl5" |
399 | |
400 | char *djgpp_pathexp (const char *p) |
401 | { |
402 | static char expp[PATH_MAX]; |
403 | strcpy (expp,perlprefix); |
404 | switch (p[0]) |
405 | { |
406 | case 'B': |
407 | strcat (expp,"/bin"); |
408 | break; |
409 | case 'S': |
410 | strcat (expp,"/lib" PERL5 "/site"); |
411 | break; |
412 | default: |
413 | strcat (expp,"/lib" PERL5); |
414 | break; |
415 | } |
416 | return expp; |
417 | } |
418 | |
419 | void |
420 | Perl_DJGPP_init (int *argcp,char ***argvp) |
421 | { |
422 | char *p; |
423 | |
424 | perlprefix=strdup (**argvp); |
425 | strlwr (perlprefix); |
426 | if ((p=strrchr (perlprefix,'/'))!=NULL) |
427 | { |
428 | *p=0; |
429 | if (strEQ (p-4,"/bin")) |
430 | p[-4]=0; |
431 | } |
432 | else |
433 | strcpy (perlprefix,".."); |
434 | } |
435 | |
05af4e39 |
436 | int |
437 | djgpp_fflush (FILE *fp) |
438 | { |
439 | int res; |
440 | |
441 | if ((res = fflush(fp)) == 0 && fp) { |
442 | Stat_t s; |
443 | if (Fstat(fileno(fp), &s) == 0 && !S_ISSOCK(s.st_mode)) |
444 | res = fsync(fileno(fp)); |
445 | } |
446 | /* |
447 | * If the flush succeeded but set end-of-file, we need to clear |
448 | * the error because our caller may check ferror(). BTW, this |
449 | * probably means we just flushed an empty file. |
450 | */ |
451 | if (res == 0 && fp && ferror(fp) == EOF) clearerr(fp); |
452 | |
453 | return res; |
454 | } |