Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
a687059c | 4 | * |
6e21c824 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
a687059c | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "Far below them they saw the white waters pour into a foaming bowl, and | |
12 | * then swirl darkly about a deep oval basin in the rocks, until they found | |
13 | * their way out again through a narrow gate, and flowed away, fuming and | |
14 | * chattering, into calmer and more level reaches." | |
a687059c LW |
15 | */ |
16 | ||
17 | #include "EXTERN.h" | |
18 | #include "perl.h" | |
19 | ||
fe14fcc3 | 20 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 21 | #include <sys/ipc.h> |
fe14fcc3 | 22 | #ifdef HAS_MSG |
c2ab57d4 | 23 | #include <sys/msg.h> |
e5d73d77 | 24 | #endif |
fe14fcc3 | 25 | #ifdef HAS_SEM |
c2ab57d4 | 26 | #include <sys/sem.h> |
e5d73d77 | 27 | #endif |
fe14fcc3 | 28 | #ifdef HAS_SHM |
c2ab57d4 | 29 | #include <sys/shm.h> |
a0d0e21e LW |
30 | # ifndef HAS_SHMAT_PROTOTYPE |
31 | extern Shmat_t shmat _((int, char *, int)); | |
32 | # endif | |
c2ab57d4 | 33 | #endif |
e5d73d77 | 34 | #endif |
c2ab57d4 | 35 | |
663a0e37 LW |
36 | #ifdef I_UTIME |
37 | #include <utime.h> | |
38 | #endif | |
ff8e2863 LW |
39 | #ifdef I_FCNTL |
40 | #include <fcntl.h> | |
41 | #endif | |
fe14fcc3 LW |
42 | #ifdef I_SYS_FILE |
43 | #include <sys/file.h> | |
44 | #endif | |
a687059c LW |
45 | |
46 | bool | |
a0d0e21e | 47 | do_open(gv,name,len,supplied_fp) |
79072805 | 48 | GV *gv; |
a687059c | 49 | register char *name; |
79072805 | 50 | I32 len; |
a0d0e21e | 51 | FILE *supplied_fp; |
a687059c LW |
52 | { |
53 | FILE *fp; | |
a0d0e21e LW |
54 | register IO *io = GvIOn(gv); |
55 | char *myname = savepv(name); | |
a687059c LW |
56 | int result; |
57 | int fd; | |
58 | int writing = 0; | |
a0d0e21e | 59 | int dodup; |
a687059c | 60 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
6e21c824 LW |
61 | FILE *saveifp = Nullfp; |
62 | FILE *saveofp = Nullfp; | |
63 | char savetype = ' '; | |
a687059c | 64 | |
8990e307 | 65 | SAVEFREEPV(myname); |
bee1dbe2 | 66 | mode[0] = mode[1] = mode[2] = '\0'; |
a687059c LW |
67 | name = myname; |
68 | forkprocess = 1; /* assume true if no fork */ | |
99b89507 | 69 | while (len && isSPACE(name[len-1])) |
a687059c | 70 | name[--len] = '\0'; |
a0d0e21e | 71 | if (IoIFP(io)) { |
8990e307 LW |
72 | fd = fileno(IoIFP(io)); |
73 | if (IoTYPE(io) == '-') | |
c2ab57d4 | 74 | result = 0; |
6e21c824 | 75 | else if (fd <= maxsysfd) { |
8990e307 LW |
76 | saveifp = IoIFP(io); |
77 | saveofp = IoOFP(io); | |
78 | savetype = IoTYPE(io); | |
6e21c824 LW |
79 | result = 0; |
80 | } | |
8990e307 LW |
81 | else if (IoTYPE(io) == '|') |
82 | result = my_pclose(IoIFP(io)); | |
83 | else if (IoIFP(io) != IoOFP(io)) { | |
84 | if (IoOFP(io)) { | |
85 | result = fclose(IoOFP(io)); | |
86 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
87 | } |
88 | else | |
8990e307 | 89 | result = fclose(IoIFP(io)); |
a687059c | 90 | } |
a687059c | 91 | else |
8990e307 | 92 | result = fclose(IoIFP(io)); |
6e21c824 | 93 | if (result == EOF && fd > maxsysfd) |
a687059c | 94 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
79072805 | 95 | GvENAME(gv)); |
8990e307 | 96 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c LW |
97 | } |
98 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ | |
99 | mode[1] = *name++; | |
100 | mode[2] = '\0'; | |
101 | --len; | |
102 | writing = 1; | |
103 | } | |
104 | else { | |
105 | mode[1] = '\0'; | |
106 | } | |
8990e307 | 107 | IoTYPE(io) = *name; |
a687059c | 108 | if (*name == '|') { |
99b89507 LW |
109 | /*SUPPRESS 530*/ |
110 | for (name++; isSPACE(*name); name++) ; | |
79072805 LW |
111 | if (strNE(name,"-")) |
112 | TAINT_ENV(); | |
113 | TAINT_PROPER("piped open"); | |
a0d0e21e LW |
114 | if (dowarn && name[strlen(name)-1] == '|') |
115 | warn("Can't do bidirectional pipe"); | |
79072805 | 116 | fp = my_popen(name,"w"); |
a687059c LW |
117 | writing = 1; |
118 | } | |
a687059c | 119 | else if (*name == '>') { |
79072805 | 120 | TAINT_PROPER("open"); |
bf38876a LW |
121 | name++; |
122 | if (*name == '>') { | |
8990e307 | 123 | mode[0] = IoTYPE(io) = 'a'; |
bf38876a | 124 | name++; |
a687059c | 125 | } |
bf38876a | 126 | else |
a687059c | 127 | mode[0] = 'w'; |
a687059c | 128 | writing = 1; |
bf38876a LW |
129 | if (*name == '&') { |
130 | duplicity: | |
a0d0e21e | 131 | dodup = 1; |
bf38876a | 132 | name++; |
a0d0e21e LW |
133 | if (*name == '=') { |
134 | dodup = 0; | |
bf38876a | 135 | name++; |
a0d0e21e LW |
136 | } |
137 | if (!*name && supplied_fp) | |
138 | fp = supplied_fp; | |
bf38876a | 139 | else { |
a0d0e21e LW |
140 | while (isSPACE(*name)) |
141 | name++; | |
142 | if (isDIGIT(*name)) | |
143 | fd = atoi(name); | |
144 | else { | |
145 | IO* thatio; | |
146 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
147 | thatio = GvIO(gv); | |
148 | if (!thatio) { | |
6e21c824 | 149 | #ifdef EINVAL |
748a9306 | 150 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 151 | #endif |
a0d0e21e LW |
152 | goto say_false; |
153 | } | |
154 | if (IoIFP(thatio)) { | |
155 | fd = fileno(IoIFP(thatio)); | |
156 | if (IoTYPE(thatio) == 's') | |
157 | IoTYPE(io) = 's'; | |
158 | } | |
159 | else | |
160 | fd = -1; | |
bf38876a | 161 | } |
a0d0e21e LW |
162 | if (dodup) |
163 | fd = dup(fd); | |
164 | if (!(fp = fdopen(fd,mode))) | |
fec02dd3 AD |
165 | if (dodup) |
166 | close(fd); | |
fe14fcc3 | 167 | } |
bf38876a LW |
168 | } |
169 | else { | |
99b89507 | 170 | while (isSPACE(*name)) |
bf38876a LW |
171 | name++; |
172 | if (strEQ(name,"-")) { | |
173 | fp = stdout; | |
8990e307 | 174 | IoTYPE(io) = '-'; |
bf38876a LW |
175 | } |
176 | else { | |
177 | fp = fopen(name,mode); | |
178 | } | |
179 | } | |
a687059c LW |
180 | } |
181 | else { | |
182 | if (*name == '<') { | |
bf38876a LW |
183 | mode[0] = 'r'; |
184 | name++; | |
99b89507 | 185 | while (isSPACE(*name)) |
bf38876a LW |
186 | name++; |
187 | if (*name == '&') | |
188 | goto duplicity; | |
a687059c LW |
189 | if (strEQ(name,"-")) { |
190 | fp = stdin; | |
8990e307 | 191 | IoTYPE(io) = '-'; |
a687059c | 192 | } |
bf38876a | 193 | else |
a687059c | 194 | fp = fopen(name,mode); |
a687059c LW |
195 | } |
196 | else if (name[len-1] == '|') { | |
a687059c | 197 | name[--len] = '\0'; |
99b89507 | 198 | while (len && isSPACE(name[len-1])) |
a687059c | 199 | name[--len] = '\0'; |
99b89507 LW |
200 | /*SUPPRESS 530*/ |
201 | for (; isSPACE(*name); name++) ; | |
79072805 LW |
202 | if (strNE(name,"-")) |
203 | TAINT_ENV(); | |
204 | TAINT_PROPER("piped open"); | |
205 | fp = my_popen(name,"r"); | |
8990e307 | 206 | IoTYPE(io) = '|'; |
a687059c LW |
207 | } |
208 | else { | |
8990e307 | 209 | IoTYPE(io) = '<'; |
99b89507 LW |
210 | /*SUPPRESS 530*/ |
211 | for (; isSPACE(*name); name++) ; | |
a687059c LW |
212 | if (strEQ(name,"-")) { |
213 | fp = stdin; | |
8990e307 | 214 | IoTYPE(io) = '-'; |
a687059c LW |
215 | } |
216 | else | |
217 | fp = fopen(name,"r"); | |
218 | } | |
219 | } | |
bee1dbe2 | 220 | if (!fp) { |
8990e307 | 221 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 | 222 | warn(warn_nl, "open"); |
6e21c824 | 223 | goto say_false; |
bee1dbe2 | 224 | } |
8990e307 LW |
225 | if (IoTYPE(io) && |
226 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
a0d0e21e | 227 | if (Fstat(fileno(fp),&statbuf) < 0) { |
a687059c | 228 | (void)fclose(fp); |
6e21c824 | 229 | goto say_false; |
a687059c | 230 | } |
1462b684 | 231 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 | 232 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
233 | #ifdef HAS_SOCKET |
234 | else if ( | |
c623bd54 | 235 | #ifdef S_IFMT |
99b89507 LW |
236 | !(statbuf.st_mode & S_IFMT) |
237 | #else | |
238 | !statbuf.st_mode | |
239 | #endif | |
240 | ) { | |
a0d0e21e LW |
241 | int buflen = sizeof tokenbuf; |
242 | if (getsockname(fileno(fp), (struct sockaddr *)tokenbuf, &buflen) >= 0 | |
bee1dbe2 | 243 | || errno != ENOTSOCK) |
8990e307 | 244 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
245 | /* but some return 0 for streams too, sigh */ |
246 | } | |
bf38876a | 247 | #endif |
a687059c | 248 | } |
6e21c824 LW |
249 | if (saveifp) { /* must use old fp? */ |
250 | fd = fileno(saveifp); | |
251 | if (saveofp) { | |
252 | fflush(saveofp); /* emulate fclose() */ | |
253 | if (saveofp != saveifp) { /* was a socket? */ | |
254 | fclose(saveofp); | |
99b89507 LW |
255 | if (fd > 2) |
256 | Safefree(saveofp); | |
6e21c824 LW |
257 | } |
258 | } | |
259 | if (fd != fileno(fp)) { | |
bee1dbe2 | 260 | int pid; |
79072805 | 261 | SV *sv; |
bee1dbe2 | 262 | |
6e21c824 | 263 | dup2(fileno(fp), fd); |
79072805 | 264 | sv = *av_fetch(fdpid,fileno(fp),TRUE); |
a0d0e21e | 265 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
266 | pid = SvIVX(sv); |
267 | SvIVX(sv) = 0; | |
79072805 | 268 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e | 269 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 270 | SvIVX(sv) = pid; |
6e21c824 | 271 | fclose(fp); |
bee1dbe2 | 272 | |
6e21c824 LW |
273 | } |
274 | fp = saveifp; | |
bee1dbe2 | 275 | clearerr(fp); |
6e21c824 | 276 | } |
a0d0e21e | 277 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
1462b684 | 278 | fd = fileno(fp); |
a0d0e21e | 279 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 | 280 | #endif |
8990e307 | 281 | IoIFP(io) = fp; |
bf38876a | 282 | if (writing) { |
8990e307 LW |
283 | if (IoTYPE(io) == 's' |
284 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { | |
285 | if (!(IoOFP(io) = fdopen(fileno(fp),"w"))) { | |
fe14fcc3 | 286 | fclose(fp); |
8990e307 | 287 | IoIFP(io) = Nullfp; |
6e21c824 | 288 | goto say_false; |
fe14fcc3 | 289 | } |
1462b684 LW |
290 | } |
291 | else | |
8990e307 | 292 | IoOFP(io) = fp; |
bf38876a | 293 | } |
a687059c | 294 | return TRUE; |
6e21c824 LW |
295 | |
296 | say_false: | |
8990e307 LW |
297 | IoIFP(io) = saveifp; |
298 | IoOFP(io) = saveofp; | |
299 | IoTYPE(io) = savetype; | |
6e21c824 | 300 | return FALSE; |
a687059c LW |
301 | } |
302 | ||
303 | FILE * | |
79072805 LW |
304 | nextargv(gv) |
305 | register GV *gv; | |
a687059c | 306 | { |
79072805 | 307 | register SV *sv; |
99b89507 | 308 | #ifndef FLEXFILENAMES |
c623bd54 LW |
309 | int filedev; |
310 | int fileino; | |
99b89507 | 311 | #endif |
c623bd54 LW |
312 | int fileuid; |
313 | int filegid; | |
fe14fcc3 | 314 | |
79072805 | 315 | if (!argvoutgv) |
85e6fe83 | 316 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 | 317 | if (filemode & (S_ISUID|S_ISGID)) { |
a0d0e21e | 318 | fflush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 LW |
319 | #ifdef HAS_FCHMOD |
320 | (void)fchmod(lastfd,filemode); | |
321 | #else | |
322 | (void)chmod(oldname,filemode); | |
323 | #endif | |
324 | } | |
325 | filemode = 0; | |
79072805 | 326 | while (av_len(GvAV(gv)) >= 0) { |
463ee0b2 | 327 | STRLEN len; |
79072805 | 328 | sv = av_shift(GvAV(gv)); |
8990e307 | 329 | SAVEFREESV(sv); |
79072805 LW |
330 | sv_setsv(GvSV(gv),sv); |
331 | SvSETMAGIC(GvSV(gv)); | |
463ee0b2 | 332 | oldname = SvPVx(GvSV(gv), len); |
a0d0e21e | 333 | if (do_open(gv,oldname,len,Nullfp)) { |
a687059c | 334 | if (inplace) { |
79072805 | 335 | TAINT_PROPER("inplace open"); |
c623bd54 | 336 | if (strEQ(oldname,"-")) { |
85e6fe83 | 337 | defoutgv = gv_fetchpv("STDOUT",TRUE,SVt_PVIO); |
a0d0e21e | 338 | return IoIFP(GvIOp(gv)); |
c623bd54 | 339 | } |
99b89507 | 340 | #ifndef FLEXFILENAMES |
c623bd54 LW |
341 | filedev = statbuf.st_dev; |
342 | fileino = statbuf.st_ino; | |
99b89507 | 343 | #endif |
a687059c LW |
344 | filemode = statbuf.st_mode; |
345 | fileuid = statbuf.st_uid; | |
346 | filegid = statbuf.st_gid; | |
c623bd54 LW |
347 | if (!S_ISREG(filemode)) { |
348 | warn("Can't do inplace edit: %s is not a regular file", | |
349 | oldname ); | |
79072805 | 350 | do_close(gv,FALSE); |
c623bd54 LW |
351 | continue; |
352 | } | |
a687059c | 353 | if (*inplace) { |
ff8e2863 | 354 | #ifdef SUFFIX |
79072805 | 355 | add_suffix(sv,inplace); |
ff8e2863 | 356 | #else |
79072805 | 357 | sv_catpv(sv,inplace); |
ff8e2863 | 358 | #endif |
c623bd54 | 359 | #ifndef FLEXFILENAMES |
a0d0e21e | 360 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 LW |
361 | && statbuf.st_dev == filedev |
362 | && statbuf.st_ino == fileino ) { | |
363 | warn("Can't do inplace edit: %s > 14 characters", | |
463ee0b2 | 364 | SvPVX(sv) ); |
79072805 | 365 | do_close(gv,FALSE); |
c623bd54 LW |
366 | continue; |
367 | } | |
368 | #endif | |
fe14fcc3 | 369 | #ifdef HAS_RENAME |
bee1dbe2 | 370 | #ifndef DOSISH |
463ee0b2 | 371 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 | 372 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 373 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 374 | do_close(gv,FALSE); |
c623bd54 LW |
375 | continue; |
376 | } | |
a687059c | 377 | #else |
79072805 | 378 | do_close(gv,FALSE); |
463ee0b2 LW |
379 | (void)unlink(SvPVX(sv)); |
380 | (void)rename(oldname,SvPVX(sv)); | |
a0d0e21e | 381 | do_open(gv,SvPVX(sv),SvCUR(GvSV(gv)),Nullfp); |
ff8e2863 LW |
382 | #endif /* MSDOS */ |
383 | #else | |
463ee0b2 LW |
384 | (void)UNLINK(SvPVX(sv)); |
385 | if (link(oldname,SvPVX(sv)) < 0) { | |
c623bd54 | 386 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 387 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 388 | do_close(gv,FALSE); |
c623bd54 LW |
389 | continue; |
390 | } | |
a687059c LW |
391 | (void)UNLINK(oldname); |
392 | #endif | |
393 | } | |
394 | else { | |
bee1dbe2 | 395 | #ifndef DOSISH |
fe14fcc3 LW |
396 | if (UNLINK(oldname) < 0) { |
397 | warn("Can't rename %s to %s: %s, skipping file", | |
2304df62 | 398 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 399 | do_close(gv,FALSE); |
fe14fcc3 LW |
400 | continue; |
401 | } | |
ff8e2863 | 402 | #else |
463ee0b2 | 403 | croak("Can't do inplace edit without backup"); |
ff8e2863 | 404 | #endif |
a687059c LW |
405 | } |
406 | ||
79072805 LW |
407 | sv_setpvn(sv,">",1); |
408 | sv_catpv(sv,oldname); | |
748a9306 | 409 | SETERRNO(0,0); /* in case sprintf set errno */ |
a0d0e21e | 410 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),Nullfp)) { |
c623bd54 | 411 | warn("Can't do inplace edit on %s: %s", |
2304df62 | 412 | oldname, Strerror(errno) ); |
79072805 | 413 | do_close(gv,FALSE); |
fe14fcc3 LW |
414 | continue; |
415 | } | |
79072805 | 416 | defoutgv = argvoutgv; |
a0d0e21e LW |
417 | lastfd = fileno(IoIFP(GvIOp(argvoutgv))); |
418 | (void)Fstat(lastfd,&statbuf); | |
fe14fcc3 LW |
419 | #ifdef HAS_FCHMOD |
420 | (void)fchmod(lastfd,filemode); | |
a687059c LW |
421 | #else |
422 | (void)chmod(oldname,filemode); | |
423 | #endif | |
fe14fcc3 LW |
424 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
425 | #ifdef HAS_FCHOWN | |
426 | (void)fchown(lastfd,fileuid,filegid); | |
a687059c | 427 | #else |
fe14fcc3 LW |
428 | #ifdef HAS_CHOWN |
429 | (void)chown(oldname,fileuid,filegid); | |
a687059c | 430 | #endif |
b1248f16 | 431 | #endif |
fe14fcc3 | 432 | } |
a687059c | 433 | } |
a0d0e21e | 434 | return IoIFP(GvIOp(gv)); |
a687059c LW |
435 | } |
436 | else | |
2304df62 | 437 | fprintf(stderr,"Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c LW |
438 | } |
439 | if (inplace) { | |
79072805 | 440 | (void)do_close(argvoutgv,FALSE); |
85e6fe83 | 441 | defoutgv = gv_fetchpv("STDOUT",TRUE,SVt_PVIO); |
a687059c LW |
442 | } |
443 | return Nullfp; | |
444 | } | |
445 | ||
fe14fcc3 | 446 | #ifdef HAS_PIPE |
afd9f252 | 447 | void |
79072805 LW |
448 | do_pipe(sv, rgv, wgv) |
449 | SV *sv; | |
450 | GV *rgv; | |
451 | GV *wgv; | |
afd9f252 | 452 | { |
79072805 LW |
453 | register IO *rstio; |
454 | register IO *wstio; | |
afd9f252 LW |
455 | int fd[2]; |
456 | ||
79072805 | 457 | if (!rgv) |
afd9f252 | 458 | goto badexit; |
79072805 | 459 | if (!wgv) |
afd9f252 LW |
460 | goto badexit; |
461 | ||
a0d0e21e LW |
462 | rstio = GvIOn(rgv); |
463 | wstio = GvIOn(wgv); | |
afd9f252 | 464 | |
a0d0e21e | 465 | if (IoIFP(rstio)) |
79072805 | 466 | do_close(rgv,FALSE); |
a0d0e21e | 467 | if (IoIFP(wstio)) |
79072805 | 468 | do_close(wgv,FALSE); |
afd9f252 LW |
469 | |
470 | if (pipe(fd) < 0) | |
471 | goto badexit; | |
8990e307 LW |
472 | IoIFP(rstio) = fdopen(fd[0], "r"); |
473 | IoOFP(wstio) = fdopen(fd[1], "w"); | |
474 | IoIFP(wstio) = IoOFP(wstio); | |
475 | IoTYPE(rstio) = '<'; | |
476 | IoTYPE(wstio) = '>'; | |
477 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
478 | if (IoIFP(rstio)) fclose(IoIFP(rstio)); | |
fe14fcc3 | 479 | else close(fd[0]); |
8990e307 | 480 | if (IoOFP(wstio)) fclose(IoOFP(wstio)); |
fe14fcc3 LW |
481 | else close(fd[1]); |
482 | goto badexit; | |
483 | } | |
afd9f252 | 484 | |
79072805 | 485 | sv_setsv(sv,&sv_yes); |
afd9f252 LW |
486 | return; |
487 | ||
488 | badexit: | |
79072805 | 489 | sv_setsv(sv,&sv_undef); |
afd9f252 LW |
490 | return; |
491 | } | |
b1248f16 | 492 | #endif |
afd9f252 | 493 | |
a687059c | 494 | bool |
a0d0e21e | 495 | #ifndef CAN_PROTOTYPE |
79072805 LW |
496 | do_close(gv,explicit) |
497 | GV *gv; | |
a687059c | 498 | bool explicit; |
8990e307 LW |
499 | #else |
500 | do_close(GV *gv, bool explicit) | |
a0d0e21e | 501 | #endif /* CAN_PROTOTYPE */ |
a687059c LW |
502 | { |
503 | bool retval = FALSE; | |
79072805 | 504 | register IO *io; |
a687059c LW |
505 | int status; |
506 | ||
79072805 LW |
507 | if (!gv) |
508 | gv = argvgv; | |
a0d0e21e | 509 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 | 510 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 | 511 | return FALSE; |
99b89507 | 512 | } |
79072805 LW |
513 | io = GvIO(gv); |
514 | if (!io) { /* never opened */ | |
a687059c | 515 | if (dowarn && explicit) |
79072805 | 516 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c LW |
517 | return FALSE; |
518 | } | |
8990e307 LW |
519 | if (IoIFP(io)) { |
520 | if (IoTYPE(io) == '|') { | |
521 | status = my_pclose(IoIFP(io)); | |
c623bd54 | 522 | retval = (status == 0); |
748a9306 | 523 | statusvalue = FIXSTATUS(status); |
a687059c | 524 | } |
8990e307 | 525 | else if (IoTYPE(io) == '-') |
a687059c LW |
526 | retval = TRUE; |
527 | else { | |
8990e307 LW |
528 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
529 | retval = (fclose(IoOFP(io)) != EOF); | |
530 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
531 | } |
532 | else | |
8990e307 | 533 | retval = (fclose(IoIFP(io)) != EOF); |
a687059c | 534 | } |
8990e307 | 535 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 LW |
536 | } |
537 | if (explicit) { | |
8990e307 LW |
538 | IoLINES(io) = 0; |
539 | IoPAGE(io) = 0; | |
540 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
a687059c | 541 | } |
8990e307 | 542 | IoTYPE(io) = ' '; |
a687059c LW |
543 | return retval; |
544 | } | |
545 | ||
546 | bool | |
79072805 LW |
547 | do_eof(gv) |
548 | GV *gv; | |
a687059c | 549 | { |
79072805 | 550 | register IO *io; |
a687059c LW |
551 | int ch; |
552 | ||
79072805 | 553 | io = GvIO(gv); |
a687059c | 554 | |
79072805 | 555 | if (!io) |
a687059c LW |
556 | return TRUE; |
557 | ||
8990e307 | 558 | while (IoIFP(io)) { |
a687059c | 559 | |
85e6fe83 | 560 | #ifdef USE_STD_STDIO /* (the code works without this) */ |
8990e307 | 561 | if (IoIFP(io)->_cnt > 0) /* cheat a little, since */ |
a687059c LW |
562 | return FALSE; /* this is the most usual case */ |
563 | #endif | |
564 | ||
8990e307 | 565 | ch = getc(IoIFP(io)); |
a687059c | 566 | if (ch != EOF) { |
8990e307 | 567 | (void)ungetc(ch, IoIFP(io)); |
a687059c LW |
568 | return FALSE; |
569 | } | |
85e6fe83 | 570 | #ifdef USE_STD_STDIO |
8990e307 LW |
571 | if (IoIFP(io)->_cnt < -1) |
572 | IoIFP(io)->_cnt = -1; | |
fe14fcc3 | 573 | #endif |
8990e307 | 574 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 | 575 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c LW |
576 | return TRUE; |
577 | } | |
578 | else | |
579 | return TRUE; /* normal fp, definitely end of file */ | |
580 | } | |
581 | return TRUE; | |
582 | } | |
583 | ||
584 | long | |
79072805 LW |
585 | do_tell(gv) |
586 | GV *gv; | |
a687059c | 587 | { |
79072805 | 588 | register IO *io; |
a687059c | 589 | |
79072805 | 590 | if (!gv) |
a687059c LW |
591 | goto phooey; |
592 | ||
79072805 | 593 | io = GvIO(gv); |
8990e307 | 594 | if (!io || !IoIFP(io)) |
a687059c LW |
595 | goto phooey; |
596 | ||
bee1dbe2 | 597 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 LW |
598 | if (feof(IoIFP(io))) |
599 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 600 | #endif |
a687059c | 601 | |
8990e307 | 602 | return ftell(IoIFP(io)); |
a687059c LW |
603 | |
604 | phooey: | |
605 | if (dowarn) | |
606 | warn("tell() on unopened file"); | |
748a9306 | 607 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
608 | return -1L; |
609 | } | |
610 | ||
611 | bool | |
79072805 LW |
612 | do_seek(gv, pos, whence) |
613 | GV *gv; | |
a687059c LW |
614 | long pos; |
615 | int whence; | |
616 | { | |
79072805 | 617 | register IO *io; |
a687059c | 618 | |
79072805 | 619 | if (!gv) |
a687059c LW |
620 | goto nuts; |
621 | ||
79072805 | 622 | io = GvIO(gv); |
8990e307 | 623 | if (!io || !IoIFP(io)) |
a687059c LW |
624 | goto nuts; |
625 | ||
bee1dbe2 | 626 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 LW |
627 | if (feof(IoIFP(io))) |
628 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 629 | #endif |
a687059c | 630 | |
8990e307 | 631 | return fseek(IoIFP(io), pos, whence) >= 0; |
a687059c LW |
632 | |
633 | nuts: | |
634 | if (dowarn) | |
635 | warn("seek() on unopened file"); | |
748a9306 | 636 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
637 | return FALSE; |
638 | } | |
639 | ||
a0d0e21e | 640 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 641 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 642 | #define HAS_CHSIZE |
6eb13c3b | 643 | |
79072805 LW |
644 | I32 chsize(fd, length) |
645 | I32 fd; /* file descriptor */ | |
85e6fe83 | 646 | Off_t length; /* length to set file to */ |
6eb13c3b LW |
647 | { |
648 | extern long lseek(); | |
649 | struct flock fl; | |
650 | struct stat filebuf; | |
651 | ||
a0d0e21e | 652 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
653 | return -1; |
654 | ||
655 | if (filebuf.st_size < length) { | |
656 | ||
657 | /* extend file length */ | |
658 | ||
659 | if ((lseek(fd, (length - 1), 0)) < 0) | |
660 | return -1; | |
661 | ||
662 | /* write a "0" byte */ | |
663 | ||
664 | if ((write(fd, "", 1)) != 1) | |
665 | return -1; | |
666 | } | |
667 | else { | |
668 | /* truncate length */ | |
669 | ||
670 | fl.l_whence = 0; | |
671 | fl.l_len = 0; | |
672 | fl.l_start = length; | |
a0d0e21e | 673 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
674 | |
675 | /* | |
a0d0e21e | 676 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
677 | * fcntl(2), which truncates the file so that it ends at the |
678 | * position indicated by fl.l_start. | |
679 | * | |
680 | * Will minor miracles never cease? | |
681 | */ | |
682 | ||
a0d0e21e | 683 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
684 | return -1; |
685 | ||
686 | } | |
687 | ||
688 | return 0; | |
689 | } | |
a0d0e21e | 690 | #endif /* F_FREESP */ |
ff8e2863 | 691 | |
79072805 LW |
692 | I32 |
693 | looks_like_number(sv) | |
694 | SV *sv; | |
a687059c LW |
695 | { |
696 | register char *s; | |
697 | register char *send; | |
698 | ||
463ee0b2 LW |
699 | if (!SvPOK(sv)) { |
700 | STRLEN len; | |
701 | if (!SvPOKp(sv)) | |
702 | return TRUE; | |
703 | s = SvPV(sv, len); | |
704 | send = s + len; | |
705 | } | |
706 | else { | |
707 | s = SvPVX(sv); | |
708 | send = s + SvCUR(sv); | |
709 | } | |
99b89507 | 710 | while (isSPACE(*s)) |
a687059c LW |
711 | s++; |
712 | if (s >= send) | |
713 | return FALSE; | |
714 | if (*s == '+' || *s == '-') | |
715 | s++; | |
99b89507 | 716 | while (isDIGIT(*s)) |
a687059c LW |
717 | s++; |
718 | if (s == send) | |
719 | return TRUE; | |
720 | if (*s == '.') | |
721 | s++; | |
463ee0b2 | 722 | else if (s == SvPVX(sv)) |
a687059c | 723 | return FALSE; |
99b89507 | 724 | while (isDIGIT(*s)) |
a687059c LW |
725 | s++; |
726 | if (s == send) | |
727 | return TRUE; | |
728 | if (*s == 'e' || *s == 'E') { | |
729 | s++; | |
730 | if (*s == '+' || *s == '-') | |
731 | s++; | |
99b89507 | 732 | while (isDIGIT(*s)) |
a687059c LW |
733 | s++; |
734 | } | |
99b89507 | 735 | while (isSPACE(*s)) |
a687059c LW |
736 | s++; |
737 | if (s >= send) | |
738 | return TRUE; | |
739 | return FALSE; | |
740 | } | |
741 | ||
742 | bool | |
79072805 LW |
743 | do_print(sv,fp) |
744 | register SV *sv; | |
a687059c LW |
745 | FILE *fp; |
746 | { | |
747 | register char *tmps; | |
463ee0b2 | 748 | STRLEN len; |
a687059c | 749 | |
79072805 LW |
750 | /* assuming fp is checked earlier */ |
751 | if (!sv) | |
752 | return TRUE; | |
753 | if (ofmt) { | |
8990e307 | 754 | if (SvGMAGICAL(sv)) |
79072805 | 755 | mg_get(sv); |
463ee0b2 LW |
756 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
757 | fprintf(fp, ofmt, (double)SvIVX(sv)); | |
79072805 LW |
758 | return !ferror(fp); |
759 | } | |
463ee0b2 | 760 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 761 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
463ee0b2 | 762 | fprintf(fp, ofmt, SvNVX(sv)); |
79072805 LW |
763 | return !ferror(fp); |
764 | } | |
a687059c | 765 | } |
79072805 LW |
766 | switch (SvTYPE(sv)) { |
767 | case SVt_NULL: | |
8990e307 LW |
768 | if (dowarn) |
769 | warn(warn_uninit); | |
ff8e2863 | 770 | return TRUE; |
79072805 | 771 | case SVt_IV: |
a0d0e21e LW |
772 | if (SvIOK(sv)) { |
773 | if (SvGMAGICAL(sv)) | |
774 | mg_get(sv); | |
775 | fprintf(fp, "%ld", (long)SvIVX(sv)); | |
776 | return !ferror(fp); | |
777 | } | |
778 | /* FALL THROUGH */ | |
79072805 | 779 | default: |
463ee0b2 | 780 | tmps = SvPV(sv, len); |
79072805 | 781 | break; |
ff8e2863 | 782 | } |
a0d0e21e | 783 | if (len && (fwrite1(tmps,1,len,fp) == 0 || ferror(fp))) |
a687059c | 784 | return FALSE; |
79072805 | 785 | return TRUE; |
a687059c LW |
786 | } |
787 | ||
79072805 LW |
788 | I32 |
789 | my_stat(ARGS) | |
790 | dARGS | |
a687059c | 791 | { |
79072805 LW |
792 | dSP; |
793 | IO *io; | |
748a9306 | 794 | GV* tmpgv; |
79072805 | 795 | |
a0d0e21e | 796 | if (op->op_flags & OPf_REF) { |
79072805 | 797 | EXTEND(sp,1); |
748a9306 LW |
798 | tmpgv = cGVOP->op_gv; |
799 | do_fstat: | |
800 | io = GvIO(tmpgv); | |
8990e307 | 801 | if (io && IoIFP(io)) { |
748a9306 | 802 | statgv = tmpgv; |
79072805 LW |
803 | sv_setpv(statname,""); |
804 | laststype = OP_STAT; | |
a0d0e21e | 805 | return (laststatval = Fstat(fileno(IoIFP(io)), &statcache)); |
a687059c LW |
806 | } |
807 | else { | |
748a9306 | 808 | if (tmpgv == defgv) |
57ebbfd0 | 809 | return laststatval; |
a687059c LW |
810 | if (dowarn) |
811 | warn("Stat on unopened file <%s>", | |
748a9306 | 812 | GvENAME(tmpgv)); |
79072805 LW |
813 | statgv = Nullgv; |
814 | sv_setpv(statname,""); | |
57ebbfd0 | 815 | return (laststatval = -1); |
a687059c LW |
816 | } |
817 | } | |
818 | else { | |
748a9306 | 819 | SV* sv = POPs; |
79072805 | 820 | PUTBACK; |
748a9306 LW |
821 | if (SvTYPE(sv) == SVt_PVGV) { |
822 | tmpgv = (GV*)sv; | |
823 | goto do_fstat; | |
824 | } | |
825 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
826 | tmpgv = (GV*)SvRV(sv); | |
827 | goto do_fstat; | |
828 | } | |
829 | ||
79072805 | 830 | statgv = Nullgv; |
463ee0b2 | 831 | sv_setpv(statname,SvPV(sv, na)); |
79072805 | 832 | laststype = OP_STAT; |
a0d0e21e | 833 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 | 834 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
835 | warn(warn_nl, "stat"); |
836 | return laststatval; | |
a687059c LW |
837 | } |
838 | } | |
839 | ||
79072805 LW |
840 | I32 |
841 | my_lstat(ARGS) | |
842 | dARGS | |
c623bd54 | 843 | { |
79072805 LW |
844 | dSP; |
845 | SV *sv; | |
a0d0e21e | 846 | if (op->op_flags & OPf_REF) { |
79072805 LW |
847 | EXTEND(sp,1); |
848 | if (cGVOP->op_gv == defgv) { | |
849 | if (laststype != OP_LSTAT) | |
463ee0b2 | 850 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 LW |
851 | return laststatval; |
852 | } | |
463ee0b2 | 853 | croak("You can't use -l on a filehandle"); |
fe14fcc3 | 854 | } |
c623bd54 | 855 | |
79072805 LW |
856 | laststype = OP_LSTAT; |
857 | statgv = Nullgv; | |
858 | sv = POPs; | |
859 | PUTBACK; | |
463ee0b2 | 860 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 | 861 | #ifdef HAS_LSTAT |
463ee0b2 | 862 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 | 863 | #else |
a0d0e21e | 864 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 | 865 | #endif |
463ee0b2 | 866 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
867 | warn(warn_nl, "lstat"); |
868 | return laststatval; | |
c623bd54 LW |
869 | } |
870 | ||
a687059c | 871 | bool |
79072805 LW |
872 | do_aexec(really,mark,sp) |
873 | SV *really; | |
874 | register SV **mark; | |
875 | register SV **sp; | |
a687059c | 876 | { |
a687059c | 877 | register char **a; |
a687059c LW |
878 | char *tmps; |
879 | ||
79072805 LW |
880 | if (sp > mark) { |
881 | New(401,Argv, sp - mark + 1, char*); | |
bee1dbe2 | 882 | a = Argv; |
79072805 LW |
883 | while (++mark <= sp) { |
884 | if (*mark) | |
463ee0b2 | 885 | *a++ = SvPVx(*mark, na); |
a687059c LW |
886 | else |
887 | *a++ = ""; | |
888 | } | |
889 | *a = Nullch; | |
bee1dbe2 | 890 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 891 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 | 892 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 | 893 | execvp(tmps,Argv); |
a687059c | 894 | else |
bee1dbe2 | 895 | execvp(Argv[0],Argv); |
a0d0e21e LW |
896 | if (dowarn) |
897 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 898 | } |
bee1dbe2 | 899 | do_execfree(); |
a687059c LW |
900 | return FALSE; |
901 | } | |
902 | ||
fe14fcc3 | 903 | void |
ff8e2863 LW |
904 | do_execfree() |
905 | { | |
906 | if (Argv) { | |
907 | Safefree(Argv); | |
908 | Argv = Null(char **); | |
909 | } | |
910 | if (Cmd) { | |
911 | Safefree(Cmd); | |
912 | Cmd = Nullch; | |
913 | } | |
914 | } | |
915 | ||
a687059c LW |
916 | bool |
917 | do_exec(cmd) | |
918 | char *cmd; | |
919 | { | |
920 | register char **a; | |
921 | register char *s; | |
a687059c LW |
922 | char flags[10]; |
923 | ||
748a9306 LW |
924 | while (*cmd && isSPACE(*cmd)) |
925 | cmd++; | |
926 | ||
a687059c LW |
927 | /* save an extra exec if possible */ |
928 | ||
bf38876a LW |
929 | #ifdef CSH |
930 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { | |
a687059c | 931 | strcpy(flags,"-c"); |
bf38876a | 932 | s = cmd+cshlen+3; |
a687059c LW |
933 | if (*s == 'f') { |
934 | s++; | |
935 | strcat(flags,"f"); | |
936 | } | |
937 | if (*s == ' ') | |
938 | s++; | |
939 | if (*s++ == '\'') { | |
940 | char *ncmd = s; | |
941 | ||
942 | while (*s) | |
943 | s++; | |
944 | if (s[-1] == '\n') | |
945 | *--s = '\0'; | |
946 | if (s[-1] == '\'') { | |
947 | *--s = '\0'; | |
bf38876a | 948 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
949 | *s = '\''; |
950 | return FALSE; | |
951 | } | |
952 | } | |
953 | } | |
bf38876a | 954 | #endif /* CSH */ |
a687059c LW |
955 | |
956 | /* see if there are shell metacharacters in it */ | |
957 | ||
748a9306 LW |
958 | if (*cmd == '.' && isSPACE(cmd[1])) |
959 | goto doshell; | |
960 | ||
961 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
962 | goto doshell; | |
963 | ||
99b89507 | 964 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
965 | if (*s == '=') |
966 | goto doshell; | |
748a9306 | 967 | |
a687059c | 968 | for (s = cmd; *s; s++) { |
93a17b20 | 969 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
970 | if (*s == '\n' && !s[1]) { |
971 | *s = '\0'; | |
972 | break; | |
973 | } | |
974 | doshell: | |
975 | execl("/bin/sh","sh","-c",cmd,(char*)0); | |
976 | return FALSE; | |
977 | } | |
978 | } | |
748a9306 | 979 | |
ff8e2863 | 980 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e | 981 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 LW |
982 | a = Argv; |
983 | for (s = Cmd; *s;) { | |
99b89507 | 984 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
985 | if (*s) |
986 | *(a++) = s; | |
99b89507 | 987 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
988 | if (*s) |
989 | *s++ = '\0'; | |
990 | } | |
991 | *a = Nullch; | |
ff8e2863 LW |
992 | if (Argv[0]) { |
993 | execvp(Argv[0],Argv); | |
b1248f16 | 994 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 995 | do_execfree(); |
a687059c | 996 | goto doshell; |
b1248f16 | 997 | } |
a0d0e21e LW |
998 | if (dowarn) |
999 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 1000 | } |
ff8e2863 | 1001 | do_execfree(); |
a687059c LW |
1002 | return FALSE; |
1003 | } | |
1004 | ||
79072805 LW |
1005 | I32 |
1006 | apply(type,mark,sp) | |
1007 | I32 type; | |
1008 | register SV **mark; | |
1009 | register SV **sp; | |
a687059c | 1010 | { |
79072805 LW |
1011 | register I32 val; |
1012 | register I32 val2; | |
1013 | register I32 tot = 0; | |
a687059c | 1014 | char *s; |
79072805 | 1015 | SV **oldmark = mark; |
a687059c | 1016 | |
463ee0b2 LW |
1017 | if (tainting) { |
1018 | while (++mark <= sp) { | |
748a9306 LW |
1019 | MAGIC *mg; |
1020 | if (SvMAGICAL(*mark) && (mg = mg_find(*mark, 't')) && mg->mg_len & 1) | |
463ee0b2 LW |
1021 | tainted = TRUE; |
1022 | } | |
1023 | mark = oldmark; | |
1024 | } | |
a687059c | 1025 | switch (type) { |
79072805 LW |
1026 | case OP_CHMOD: |
1027 | TAINT_PROPER("chmod"); | |
1028 | if (++mark <= sp) { | |
1029 | tot = sp - mark; | |
463ee0b2 | 1030 | val = SvIVx(*mark); |
79072805 | 1031 | while (++mark <= sp) { |
463ee0b2 | 1032 | if (chmod(SvPVx(*mark, na),val)) |
a687059c LW |
1033 | tot--; |
1034 | } | |
1035 | } | |
1036 | break; | |
fe14fcc3 | 1037 | #ifdef HAS_CHOWN |
79072805 LW |
1038 | case OP_CHOWN: |
1039 | TAINT_PROPER("chown"); | |
1040 | if (sp - mark > 2) { | |
463ee0b2 LW |
1041 | val = SvIVx(*++mark); |
1042 | val2 = SvIVx(*++mark); | |
a0d0e21e | 1043 | tot = sp - mark; |
79072805 | 1044 | while (++mark <= sp) { |
463ee0b2 | 1045 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c LW |
1046 | tot--; |
1047 | } | |
1048 | } | |
1049 | break; | |
b1248f16 | 1050 | #endif |
fe14fcc3 | 1051 | #ifdef HAS_KILL |
79072805 LW |
1052 | case OP_KILL: |
1053 | TAINT_PROPER("kill"); | |
463ee0b2 | 1054 | s = SvPVx(*++mark, na); |
79072805 LW |
1055 | tot = sp - mark; |
1056 | if (isUPPER(*s)) { | |
1057 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1058 | s += 3; | |
1059 | if (!(val = whichsig(s))) | |
463ee0b2 | 1060 | croak("Unrecognized signal name \"%s\"",s); |
79072805 LW |
1061 | } |
1062 | else | |
463ee0b2 | 1063 | val = SvIVx(*mark); |
79072805 LW |
1064 | if (val < 0) { |
1065 | val = -val; | |
1066 | while (++mark <= sp) { | |
463ee0b2 | 1067 | I32 proc = SvIVx(*mark); |
fe14fcc3 | 1068 | #ifdef HAS_KILLPG |
79072805 | 1069 | if (killpg(proc,val)) /* BSD */ |
a687059c | 1070 | #else |
79072805 | 1071 | if (kill(-proc,val)) /* SYSV */ |
a687059c | 1072 | #endif |
79072805 | 1073 | tot--; |
a687059c | 1074 | } |
79072805 LW |
1075 | } |
1076 | else { | |
1077 | while (++mark <= sp) { | |
463ee0b2 | 1078 | if (kill(SvIVx(*mark),val)) |
79072805 | 1079 | tot--; |
a687059c LW |
1080 | } |
1081 | } | |
1082 | break; | |
b1248f16 | 1083 | #endif |
79072805 LW |
1084 | case OP_UNLINK: |
1085 | TAINT_PROPER("unlink"); | |
1086 | tot = sp - mark; | |
1087 | while (++mark <= sp) { | |
463ee0b2 | 1088 | s = SvPVx(*mark, na); |
a687059c LW |
1089 | if (euid || unsafe) { |
1090 | if (UNLINK(s)) | |
1091 | tot--; | |
1092 | } | |
1093 | else { /* don't let root wipe out directories without -U */ | |
fe14fcc3 | 1094 | #ifdef HAS_LSTAT |
c623bd54 | 1095 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1096 | #else |
a0d0e21e | 1097 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1098 | #endif |
a687059c LW |
1099 | tot--; |
1100 | else { | |
1101 | if (UNLINK(s)) | |
1102 | tot--; | |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | break; | |
a0d0e21e | 1107 | #ifdef HAS_UTIME |
79072805 LW |
1108 | case OP_UTIME: |
1109 | TAINT_PROPER("utime"); | |
1110 | if (sp - mark > 2) { | |
748a9306 | 1111 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1112 | struct utimbuf utbuf; |
1113 | #else | |
a687059c | 1114 | struct { |
663a0e37 LW |
1115 | long actime; |
1116 | long modtime; | |
a687059c | 1117 | } utbuf; |
663a0e37 | 1118 | #endif |
a687059c | 1119 | |
afd9f252 | 1120 | Zero(&utbuf, sizeof utbuf, char); |
463ee0b2 LW |
1121 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1122 | utbuf.modtime = SvIVx(*++mark); /* time modified */ | |
79072805 LW |
1123 | tot = sp - mark; |
1124 | while (++mark <= sp) { | |
463ee0b2 | 1125 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c LW |
1126 | tot--; |
1127 | } | |
a687059c LW |
1128 | } |
1129 | else | |
79072805 | 1130 | tot = 0; |
a687059c | 1131 | break; |
a0d0e21e | 1132 | #endif |
a687059c LW |
1133 | } |
1134 | return tot; | |
1135 | } | |
1136 | ||
1137 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1138 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 | 1139 | I32 |
a687059c | 1140 | cando(bit, effective, statbufp) |
79072805 LW |
1141 | I32 bit; |
1142 | I32 effective; | |
a687059c LW |
1143 | register struct stat *statbufp; |
1144 | { | |
bee1dbe2 | 1145 | #ifdef DOSISH |
fe14fcc3 LW |
1146 | /* [Comments and code from Len Reed] |
1147 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1148 | * to write-protected files. The execute permission bit is set | |
1149 | * by the Miscrosoft C library stat() function for the following: | |
1150 | * .exe files | |
1151 | * .com files | |
1152 | * .bat files | |
1153 | * directories | |
1154 | * All files and directories are readable. | |
1155 | * Directories and special files, e.g. "CON", cannot be | |
1156 | * write-protected. | |
1157 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1158 | * bit set in the file system, but DOS permits changes to | |
1159 | * the directory anyway. In addition, all bets are off | |
1160 | * here for networked software, such as Novell and | |
1161 | * Sun's PC-NFS.] | |
1162 | */ | |
1163 | ||
bee1dbe2 LW |
1164 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1165 | * too so it will actually look into the files for magic numbers | |
1166 | */ | |
fe14fcc3 LW |
1167 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1168 | ||
1169 | #else /* ! MSDOS */ | |
a687059c | 1170 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 LW |
1171 | if (bit == S_IXUSR) { |
1172 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) | |
a687059c LW |
1173 | return TRUE; |
1174 | } | |
1175 | else | |
1176 | return TRUE; /* root reads and writes anything */ | |
1177 | return FALSE; | |
1178 | } | |
1179 | if (statbufp->st_uid == (effective ? euid : uid) ) { | |
1180 | if (statbufp->st_mode & bit) | |
1181 | return TRUE; /* ok as "user" */ | |
1182 | } | |
79072805 | 1183 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c LW |
1184 | if (statbufp->st_mode & bit >> 3) |
1185 | return TRUE; /* ok as "group" */ | |
1186 | } | |
1187 | else if (statbufp->st_mode & bit >> 6) | |
1188 | return TRUE; /* ok as "other" */ | |
1189 | return FALSE; | |
fe14fcc3 | 1190 | #endif /* ! MSDOS */ |
a687059c | 1191 | } |
a0d0e21e | 1192 | #endif /* ! VMS */ |
a687059c | 1193 | |
79072805 | 1194 | I32 |
a687059c | 1195 | ingroup(testgid,effective) |
79072805 LW |
1196 | I32 testgid; |
1197 | I32 effective; | |
a687059c LW |
1198 | { |
1199 | if (testgid == (effective ? egid : gid)) | |
1200 | return TRUE; | |
fe14fcc3 | 1201 | #ifdef HAS_GETGROUPS |
a687059c LW |
1202 | #ifndef NGROUPS |
1203 | #define NGROUPS 32 | |
1204 | #endif | |
1205 | { | |
a0d0e21e | 1206 | Groups_t gary[NGROUPS]; |
79072805 | 1207 | I32 anum; |
a687059c LW |
1208 | |
1209 | anum = getgroups(NGROUPS,gary); | |
1210 | while (--anum >= 0) | |
1211 | if (gary[anum] == testgid) | |
1212 | return TRUE; | |
1213 | } | |
1214 | #endif | |
1215 | return FALSE; | |
1216 | } | |
c2ab57d4 | 1217 | |
fe14fcc3 | 1218 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1219 | |
79072805 LW |
1220 | I32 |
1221 | do_ipcget(optype, mark, sp) | |
1222 | I32 optype; | |
1223 | SV **mark; | |
1224 | SV **sp; | |
c2ab57d4 | 1225 | { |
c2ab57d4 | 1226 | key_t key; |
79072805 | 1227 | I32 n, flags; |
c2ab57d4 | 1228 | |
463ee0b2 LW |
1229 | key = (key_t)SvNVx(*++mark); |
1230 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1231 | flags = SvIVx(*++mark); | |
748a9306 | 1232 | SETERRNO(0,0); |
c2ab57d4 LW |
1233 | switch (optype) |
1234 | { | |
fe14fcc3 | 1235 | #ifdef HAS_MSG |
79072805 | 1236 | case OP_MSGGET: |
c2ab57d4 | 1237 | return msgget(key, flags); |
e5d73d77 | 1238 | #endif |
fe14fcc3 | 1239 | #ifdef HAS_SEM |
79072805 | 1240 | case OP_SEMGET: |
c2ab57d4 | 1241 | return semget(key, n, flags); |
e5d73d77 | 1242 | #endif |
fe14fcc3 | 1243 | #ifdef HAS_SHM |
79072805 | 1244 | case OP_SHMGET: |
c2ab57d4 | 1245 | return shmget(key, n, flags); |
e5d73d77 | 1246 | #endif |
fe14fcc3 | 1247 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1248 | default: |
463ee0b2 | 1249 | croak("%s not implemented", op_name[optype]); |
e5d73d77 | 1250 | #endif |
c2ab57d4 LW |
1251 | } |
1252 | return -1; /* should never happen */ | |
1253 | } | |
1254 | ||
79072805 LW |
1255 | I32 |
1256 | do_ipcctl(optype, mark, sp) | |
1257 | I32 optype; | |
1258 | SV **mark; | |
1259 | SV **sp; | |
c2ab57d4 | 1260 | { |
79072805 | 1261 | SV *astr; |
c2ab57d4 | 1262 | char *a; |
a0d0e21e LW |
1263 | I32 id, n, cmd, infosize, getinfo; |
1264 | I32 ret = -1; | |
c2ab57d4 | 1265 | |
463ee0b2 LW |
1266 | id = SvIVx(*++mark); |
1267 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1268 | cmd = SvIVx(*++mark); | |
79072805 | 1269 | astr = *++mark; |
c2ab57d4 LW |
1270 | infosize = 0; |
1271 | getinfo = (cmd == IPC_STAT); | |
1272 | ||
1273 | switch (optype) | |
1274 | { | |
fe14fcc3 | 1275 | #ifdef HAS_MSG |
79072805 | 1276 | case OP_MSGCTL: |
c2ab57d4 LW |
1277 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1278 | infosize = sizeof(struct msqid_ds); | |
1279 | break; | |
e5d73d77 | 1280 | #endif |
fe14fcc3 | 1281 | #ifdef HAS_SHM |
79072805 | 1282 | case OP_SHMCTL: |
c2ab57d4 LW |
1283 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1284 | infosize = sizeof(struct shmid_ds); | |
1285 | break; | |
e5d73d77 | 1286 | #endif |
fe14fcc3 | 1287 | #ifdef HAS_SEM |
79072805 | 1288 | case OP_SEMCTL: |
c2ab57d4 LW |
1289 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1290 | infosize = sizeof(struct semid_ds); | |
1291 | else if (cmd == GETALL || cmd == SETALL) | |
1292 | { | |
1293 | struct semid_ds semds; | |
1294 | if (semctl(id, 0, IPC_STAT, &semds) == -1) | |
1295 | return -1; | |
1296 | getinfo = (cmd == GETALL); | |
6e21c824 LW |
1297 | infosize = semds.sem_nsems * sizeof(short); |
1298 | /* "short" is technically wrong but much more portable | |
1299 | than guessing about u_?short(_t)? */ | |
c2ab57d4 LW |
1300 | } |
1301 | break; | |
e5d73d77 | 1302 | #endif |
fe14fcc3 | 1303 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1304 | default: |
463ee0b2 | 1305 | croak("%s not implemented", op_name[optype]); |
e5d73d77 | 1306 | #endif |
c2ab57d4 LW |
1307 | } |
1308 | ||
1309 | if (infosize) | |
1310 | { | |
a0d0e21e | 1311 | STRLEN len; |
c2ab57d4 LW |
1312 | if (getinfo) |
1313 | { | |
a0d0e21e LW |
1314 | SvPV_force(astr, len); |
1315 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1316 | } |
1317 | else | |
1318 | { | |
463ee0b2 LW |
1319 | a = SvPV(astr, len); |
1320 | if (len != infosize) | |
1321 | croak("Bad arg length for %s, is %d, should be %d", | |
1322 | op_name[optype], len, infosize); | |
c2ab57d4 LW |
1323 | } |
1324 | } | |
1325 | else | |
1326 | { | |
463ee0b2 | 1327 | I32 i = SvIV(astr); |
c2ab57d4 LW |
1328 | a = (char *)i; /* ouch */ |
1329 | } | |
748a9306 | 1330 | SETERRNO(0,0); |
c2ab57d4 LW |
1331 | switch (optype) |
1332 | { | |
fe14fcc3 | 1333 | #ifdef HAS_MSG |
79072805 | 1334 | case OP_MSGCTL: |
bee1dbe2 | 1335 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1336 | break; |
e5d73d77 | 1337 | #endif |
fe14fcc3 | 1338 | #ifdef HAS_SEM |
79072805 LW |
1339 | case OP_SEMCTL: |
1340 | ret = semctl(id, n, cmd, (struct semid_ds *)a); | |
c2ab57d4 | 1341 | break; |
e5d73d77 | 1342 | #endif |
fe14fcc3 | 1343 | #ifdef HAS_SHM |
79072805 | 1344 | case OP_SHMCTL: |
bee1dbe2 | 1345 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1346 | break; |
e5d73d77 | 1347 | #endif |
c2ab57d4 LW |
1348 | } |
1349 | if (getinfo && ret >= 0) { | |
79072805 LW |
1350 | SvCUR_set(astr, infosize); |
1351 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1352 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1353 | } |
1354 | return ret; | |
1355 | } | |
1356 | ||
79072805 LW |
1357 | I32 |
1358 | do_msgsnd(mark, sp) | |
1359 | SV **mark; | |
1360 | SV **sp; | |
c2ab57d4 | 1361 | { |
fe14fcc3 | 1362 | #ifdef HAS_MSG |
79072805 | 1363 | SV *mstr; |
c2ab57d4 | 1364 | char *mbuf; |
79072805 | 1365 | I32 id, msize, flags; |
463ee0b2 | 1366 | STRLEN len; |
c2ab57d4 | 1367 | |
463ee0b2 | 1368 | id = SvIVx(*++mark); |
79072805 | 1369 | mstr = *++mark; |
463ee0b2 LW |
1370 | flags = SvIVx(*++mark); |
1371 | mbuf = SvPV(mstr, len); | |
1372 | if ((msize = len - sizeof(long)) < 0) | |
1373 | croak("Arg too short for msgsnd"); | |
748a9306 | 1374 | SETERRNO(0,0); |
bee1dbe2 | 1375 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1376 | #else |
463ee0b2 | 1377 | croak("msgsnd not implemented"); |
e5d73d77 | 1378 | #endif |
c2ab57d4 LW |
1379 | } |
1380 | ||
79072805 LW |
1381 | I32 |
1382 | do_msgrcv(mark, sp) | |
1383 | SV **mark; | |
1384 | SV **sp; | |
c2ab57d4 | 1385 | { |
fe14fcc3 | 1386 | #ifdef HAS_MSG |
79072805 | 1387 | SV *mstr; |
c2ab57d4 LW |
1388 | char *mbuf; |
1389 | long mtype; | |
79072805 | 1390 | I32 id, msize, flags, ret; |
463ee0b2 | 1391 | STRLEN len; |
79072805 | 1392 | |
463ee0b2 | 1393 | id = SvIVx(*++mark); |
79072805 | 1394 | mstr = *++mark; |
463ee0b2 LW |
1395 | msize = SvIVx(*++mark); |
1396 | mtype = (long)SvIVx(*++mark); | |
1397 | flags = SvIVx(*++mark); | |
ed6116ce LW |
1398 | if (SvTHINKFIRST(mstr)) { |
1399 | if (SvREADONLY(mstr)) | |
1400 | croak("Can't msgrcv to readonly var"); | |
1401 | if (SvROK(mstr)) | |
1402 | sv_unref(mstr); | |
1403 | } | |
a0d0e21e LW |
1404 | SvPV_force(mstr, len); |
1405 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1406 | ||
748a9306 | 1407 | SETERRNO(0,0); |
bee1dbe2 | 1408 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1409 | if (ret >= 0) { |
79072805 LW |
1410 | SvCUR_set(mstr, sizeof(long)+ret); |
1411 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1412 | } |
1413 | return ret; | |
e5d73d77 | 1414 | #else |
463ee0b2 | 1415 | croak("msgrcv not implemented"); |
e5d73d77 | 1416 | #endif |
c2ab57d4 LW |
1417 | } |
1418 | ||
79072805 LW |
1419 | I32 |
1420 | do_semop(mark, sp) | |
1421 | SV **mark; | |
1422 | SV **sp; | |
c2ab57d4 | 1423 | { |
fe14fcc3 | 1424 | #ifdef HAS_SEM |
79072805 | 1425 | SV *opstr; |
c2ab57d4 | 1426 | char *opbuf; |
463ee0b2 LW |
1427 | I32 id; |
1428 | STRLEN opsize; | |
c2ab57d4 | 1429 | |
463ee0b2 | 1430 | id = SvIVx(*++mark); |
79072805 | 1431 | opstr = *++mark; |
463ee0b2 | 1432 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1433 | if (opsize < sizeof(struct sembuf) |
1434 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1435 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1436 | return -1; |
1437 | } | |
748a9306 | 1438 | SETERRNO(0,0); |
6e21c824 | 1439 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1440 | #else |
463ee0b2 | 1441 | croak("semop not implemented"); |
e5d73d77 | 1442 | #endif |
c2ab57d4 LW |
1443 | } |
1444 | ||
79072805 LW |
1445 | I32 |
1446 | do_shmio(optype, mark, sp) | |
1447 | I32 optype; | |
1448 | SV **mark; | |
1449 | SV **sp; | |
c2ab57d4 | 1450 | { |
fe14fcc3 | 1451 | #ifdef HAS_SHM |
79072805 | 1452 | SV *mstr; |
c2ab57d4 | 1453 | char *mbuf, *shm; |
79072805 | 1454 | I32 id, mpos, msize; |
463ee0b2 | 1455 | STRLEN len; |
c2ab57d4 | 1456 | struct shmid_ds shmds; |
c2ab57d4 | 1457 | |
463ee0b2 | 1458 | id = SvIVx(*++mark); |
79072805 | 1459 | mstr = *++mark; |
463ee0b2 LW |
1460 | mpos = SvIVx(*++mark); |
1461 | msize = SvIVx(*++mark); | |
748a9306 | 1462 | SETERRNO(0,0); |
c2ab57d4 LW |
1463 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1464 | return -1; | |
1465 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1466 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1467 | return -1; |
1468 | } | |
a0d0e21e | 1469 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1470 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1471 | return -1; | |
79072805 | 1472 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1473 | SvPV_force(mstr, len); |
1474 | mbuf = SvGROW(mstr, msize+1); | |
1475 | ||
bee1dbe2 | 1476 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1477 | SvCUR_set(mstr, msize); |
1478 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1479 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1480 | } |
1481 | else { | |
79072805 | 1482 | I32 n; |
c2ab57d4 | 1483 | |
a0d0e21e | 1484 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1485 | if ((n = len) > msize) |
c2ab57d4 | 1486 | n = msize; |
bee1dbe2 | 1487 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1488 | if (n < msize) |
bee1dbe2 | 1489 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1490 | } |
1491 | return shmdt(shm); | |
e5d73d77 | 1492 | #else |
463ee0b2 | 1493 | croak("shm I/O not implemented"); |
e5d73d77 | 1494 | #endif |
c2ab57d4 LW |
1495 | } |
1496 | ||
fe14fcc3 | 1497 | #endif /* SYSV IPC */ |