X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pp_sys.c;h=a95c43c94581903efc1560aa5fb3b398e13d471d;hb=6aa016ca806d78082f3fdac943515dc35707c664;hp=517a9552b998d93f75488dd69bdbca8b5e9944a0;hpb=4602f195a9a943db1cd284ff4af1bcdb58f98ead;p=p5sagit%2Fp5-mst-13.2.git diff --git a/pp_sys.c b/pp_sys.c index 517a955..a95c43c 100644 --- a/pp_sys.c +++ b/pp_sys.c @@ -21,13 +21,18 @@ #ifdef I_SHADOW /* Shadow password support for solaris - pdo@cs.umd.edu * Not just Solaris: at least HP-UX, IRIX, Linux. - * the API is from SysV. --jhi */ -#ifdef __hpux__ + * The API is from SysV. + * + * There are at least two more shadow interfaces, + * see the comments in pp_gpwent(). + * + * --jhi */ +# ifdef __hpux__ /* There is a MAXINT coming from <- <- * and another MAXINT from "perl.h" <- . */ -#undef MAXINT -#endif -#include +# undef MAXINT +# endif +# include #endif /* XXX If this causes problems, set i_unistd=undef in the hint file. */ @@ -195,10 +200,9 @@ static char zero_but_true[ZBTLEN + 1] = "0 but true"; #endif #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS) -# if defined(I_SYS_SECURITY) +# ifdef I_SYS_SECURITY # include # endif - /* XXX Configure test needed for eaccess */ # ifdef ACC_SELF /* HP SecureWare */ # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF)) @@ -504,7 +508,7 @@ PP(pp_open) djSP; dTARGET; GV *gv; SV *sv; - SV *name; + SV *name = Nullsv; I32 have_name = 0; char *tmps; STRLEN len; @@ -608,8 +612,8 @@ PP(pp_pipe_op) IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); IoIFP(wstio) = IoOFP(wstio); - IoTYPE(rstio) = '<'; - IoTYPE(wstio) = '>'; + IoTYPE(rstio) = IoTYPE_RDONLY; + IoTYPE(wstio) = IoTYPE_WRONLY; if (!IoIFP(rstio) || !IoOFP(wstio)) { if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); @@ -1066,7 +1070,7 @@ PP(pp_select) else { GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE); if (gvp && *gvp == egv) { - gv_efullname3(TARG, PL_defoutgv, Nullch); + gv_efullname4(TARG, PL_defoutgv, Nullch, FALSE); XPUSHTARG; } else { @@ -1170,11 +1174,14 @@ PP(pp_enterwrite) cv = GvFORM(fgv); if (!cv) { + char *name = NULL; if (fgv) { SV *tmpsv = sv_newmortal(); - gv_efullname3(tmpsv, fgv, Nullch); - DIE(aTHX_ "Undefined format \"%s\" called",SvPVX(tmpsv)); + gv_efullname4(tmpsv, fgv, Nullch, FALSE); + name = SvPV_nolen(tmpsv); } + if (name && *name) + DIE(aTHX_ "Undefined format \"%s\" called", name); DIE(aTHX_ "Not a format reference"); } if (CvCLONE(cv)) @@ -1251,10 +1258,19 @@ PP(pp_leavewrite) if (!fgv) DIE(aTHX_ "bad top format reference"); cv = GvFORM(fgv); - if (!cv) { - SV *tmpsv = sv_newmortal(); - gv_efullname3(tmpsv, fgv, Nullch); - DIE(aTHX_ "Undefined top format \"%s\" called",SvPVX(tmpsv)); + { + char *name = NULL; + if (!cv) { + SV *sv = sv_newmortal(); + gv_efullname4(sv, fgv, Nullch, FALSE); + name = SvPV_nolen(sv); + } + if (name && *name) + DIE(aTHX_ "Undefined top format \"%s\" called",name); + /* why no: + else + DIE(aTHX_ "Undefined top format called"); + ?*/ } if (CvCLONE(cv)) cv = (CV*)sv_2mortal((SV*)cv_clone(cv)); @@ -1270,14 +1286,22 @@ PP(pp_leavewrite) if (!fp) { if (ckWARN2(WARN_CLOSED,WARN_IO)) { if (IoIFP(io)) { - SV* sv = sv_newmortal(); - gv_efullname3(sv, gv, Nullch); - Perl_warner(aTHX_ WARN_IO, - "Filehandle %s opened only for input", - SvPV_nolen(sv)); + /* integrate with report_evil_fh()? */ + char *name = NULL; + if (isGV(gv)) { + SV* sv = sv_newmortal(); + gv_efullname4(sv, gv, Nullch, FALSE); + name = SvPV_nolen(sv); + } + if (name && *name) + Perl_warner(aTHX_ WARN_IO, + "Filehandle %s opened only for input", name); + else + Perl_warner(aTHX_ WARN_IO, + "Filehandle opened only for input"); } else if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "write", "filehandle"); + report_evil_fh(gv, io, PL_op->op_type); } PUSHs(&PL_sv_no); } @@ -1340,24 +1364,30 @@ PP(pp_prtf) sv = NEWSV(0,0); if (!(io = GvIO(gv))) { - if (ckWARN(WARN_UNOPENED)) { - gv_efullname3(sv, gv, Nullch); - Perl_warner(aTHX_ WARN_UNOPENED, - "Filehandle %s never opened", SvPV(sv,n_a)); - } + dTHR; + if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) + report_evil_fh(gv, io, PL_op->op_type); SETERRNO(EBADF,RMS$_IFI); goto just_say_no; } else if (!(fp = IoOFP(io))) { if (ckWARN2(WARN_CLOSED,WARN_IO)) { + /* integrate with report_evil_fh()? */ if (IoIFP(io)) { - gv_efullname3(sv, gv, Nullch); - Perl_warner(aTHX_ WARN_IO, - "Filehandle %s opened only for input", - SvPV(sv,n_a)); + char *name = NULL; + if (isGV(gv)) { + gv_efullname4(sv, gv, Nullch, FALSE); + name = SvPV_nolen(sv); + } + if (name && *name) + Perl_warner(aTHX_ WARN_IO, + "Filehandle %s opened only for input", name); + else + Perl_warner(aTHX_ WARN_IO, + "Filehandle opened only for input"); } else if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "printf", "filehandle"); + report_evil_fh(gv, io, PL_op->op_type); } SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); goto just_say_no; @@ -1511,7 +1541,7 @@ PP(pp_sysread) } if (PL_op->op_type == OP_SYSREAD) { #ifdef PERL_SOCK_SYSREAD_IS_RECV - if (IoTYPE(io) == 's') { + if (IoTYPE(io) == IoTYPE_SOCKET) { length = PerlSock_recv(PerlIO_fileno(IoIFP(io)), buffer+offset, length, 0); } @@ -1524,7 +1554,7 @@ PP(pp_sysread) } else #ifdef HAS_SOCKET__bad_code_maybe - if (IoTYPE(io) == 's') { + if (IoTYPE(io) == IoTYPE_SOCKET) { char namebuf[MAXPATHLEN]; #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS) bufsize = sizeof (struct sockaddr_in); @@ -1543,13 +1573,22 @@ PP(pp_sysread) length = -1; } if (length < 0) { - if ((IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout() + if ((IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout() || IoIFP(io) == PerlIO_stderr()) && ckWARN(WARN_IO)) { - SV* sv = sv_newmortal(); - gv_efullname3(sv, gv, Nullch); - Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output", - SvPV_nolen(sv)); + /* integrate with report_evil_fh()? */ + char *name = NULL; + if (isGV(gv)) { + SV* sv = sv_newmortal(); + gv_efullname4(sv, gv, Nullch, FALSE); + name = SvPV_nolen(sv); + } + if (name && *name) + Perl_warner(aTHX_ WARN_IO, + "Filehandle %s opened only for output", name); + else + Perl_warner(aTHX_ WARN_IO, + "Filehandle opened only for output"); } goto say_undef; } @@ -1626,12 +1665,8 @@ PP(pp_send) io = GvIO(gv); if (!io || !IoIFP(io)) { retval = -1; - if (ckWARN(WARN_CLOSED)) { - if (PL_op->op_type == OP_SYSWRITE) - report_closed_fh(gv, io, "syswrite", "filehandle"); - else - report_closed_fh(gv, io, "send", "socket"); - } + if (ckWARN(WARN_CLOSED)) + report_evil_fh(gv, io, PL_op->op_type); } else if (PL_op->op_type == OP_SYSWRITE) { if (MARK < SP) { @@ -1647,7 +1682,7 @@ PP(pp_send) if (length > blen - offset) length = blen - offset; #ifdef PERL_SOCK_SYSWRITE_IS_SEND - if (IoTYPE(io) == 's') { + if (IoTYPE(io) == IoTYPE_SOCKET) { retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer+offset, length, 0); } @@ -1988,6 +2023,7 @@ PP(pp_flock) I32 value; int argtype; GV *gv; + IO *io = NULL; PerlIO *fp; #ifdef FLOCK @@ -1996,19 +2032,21 @@ PP(pp_flock) gv = PL_last_in_gv; else gv = (GV*)POPs; - if (gv && GvIO(gv)) - fp = IoIFP(GvIOp(gv)); - else + if (gv && (io = GvIO(gv))) + fp = IoIFP(io); + else { fp = Nullfp; + io = NULL; + } if (fp) { (void)PerlIO_flush(fp); value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0); } else { + if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) + report_evil_fh(gv, io, PL_op->op_type); value = 0; SETERRNO(EBADF,RMS$_IFI); - if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, GvIO(gv), "flock", "filehandle"); } PUSHi(value); RETURN; @@ -2047,7 +2085,7 @@ PP(pp_socket) RETPUSHUNDEF; IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */ IoOFP(io) = PerlIO_fdopen(fd, "w"); - IoTYPE(io) = 's'; + IoTYPE(io) = IoTYPE_SOCKET; if (!IoIFP(io) || !IoOFP(io)) { if (IoIFP(io)) PerlIO_close(IoIFP(io)); if (IoOFP(io)) PerlIO_close(IoOFP(io)); @@ -2094,10 +2132,10 @@ PP(pp_sockpair) RETPUSHUNDEF; IoIFP(io1) = PerlIO_fdopen(fd[0], "r"); IoOFP(io1) = PerlIO_fdopen(fd[0], "w"); - IoTYPE(io1) = 's'; + IoTYPE(io1) = IoTYPE_SOCKET; IoIFP(io2) = PerlIO_fdopen(fd[1], "r"); IoOFP(io2) = PerlIO_fdopen(fd[1], "w"); - IoTYPE(io2) = 's'; + IoTYPE(io2) = IoTYPE_SOCKET; if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) { if (IoIFP(io1)) PerlIO_close(IoIFP(io1)); if (IoOFP(io1)) PerlIO_close(IoOFP(io1)); @@ -2169,7 +2207,7 @@ PP(pp_bind) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "bind", "socket"); + report_evil_fh(gv, io, PL_op->op_type); SETERRNO(EBADF,SS$_IVCHAN); RETPUSHUNDEF; #else @@ -2199,7 +2237,7 @@ PP(pp_connect) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "connect", "socket"); + report_evil_fh(gv, io, PL_op->op_type); SETERRNO(EBADF,SS$_IVCHAN); RETPUSHUNDEF; #else @@ -2225,7 +2263,7 @@ PP(pp_listen) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "listen", "socket"); + report_evil_fh(gv, io, PL_op->op_type); SETERRNO(EBADF,SS$_IVCHAN); RETPUSHUNDEF; #else @@ -2266,7 +2304,7 @@ PP(pp_accept) goto badexit; IoIFP(nstio) = PerlIO_fdopen(fd, "r"); IoOFP(nstio) = PerlIO_fdopen(fd, "w"); - IoTYPE(nstio) = 's'; + IoTYPE(nstio) = IoTYPE_SOCKET; if (!IoIFP(nstio) || !IoOFP(nstio)) { if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio)); if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio)); @@ -2282,7 +2320,7 @@ PP(pp_accept) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(ggv, ggv ? GvIO(ggv) : 0, "accept", "socket"); + report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type); SETERRNO(EBADF,SS$_IVCHAN); badexit: @@ -2309,7 +2347,7 @@ PP(pp_shutdown) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, "shutdown", "socket"); + report_evil_fh(gv, io, PL_op->op_type); SETERRNO(EBADF,SS$_IVCHAN); RETPUSHUNDEF; #else @@ -2388,9 +2426,7 @@ PP(pp_ssockopt) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, - optype == OP_GSOCKOPT ? "getsockopt" : "setsockopt", - "socket"); + report_evil_fh(gv, io, optype); SETERRNO(EBADF,SS$_IVCHAN); nuts2: RETPUSHUNDEF; @@ -2463,10 +2499,7 @@ PP(pp_getpeername) nuts: if (ckWARN(WARN_CLOSED)) - report_closed_fh(gv, io, - optype == OP_GETSOCKNAME ? "getsockname" - : "getpeername", - "socket"); + report_evil_fh(gv, io, optype); SETERRNO(EBADF,SS$_IVCHAN); nuts2: RETPUSHUNDEF; @@ -2486,32 +2519,39 @@ PP(pp_lstat) PP(pp_stat) { djSP; - GV *tmpgv; + GV *gv; I32 gimme; I32 max = 13; STRLEN n_a; if (PL_op->op_flags & OPf_REF) { - tmpgv = cGVOP_gv; + gv = cGVOP_gv; + if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO)) + Perl_warner(aTHX_ WARN_IO, + "lstat() on filehandle %s", GvENAME(gv)); do_fstat: - if (tmpgv != PL_defgv) { + if (gv != PL_defgv) { PL_laststype = OP_STAT; - PL_statgv = tmpgv; + PL_statgv = gv; sv_setpv(PL_statname, ""); - PL_laststatval = (GvIO(tmpgv) && IoIFP(GvIOp(tmpgv)) - ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), &PL_statcache) : -1); + PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv)) + ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1); } - if (PL_laststatval < 0) + if (PL_laststatval < 0) { + dTHR; + if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) + report_evil_fh(gv, GvIO(gv), PL_op->op_type); max = 0; + } } else { SV* sv = POPs; if (SvTYPE(sv) == SVt_PVGV) { - tmpgv = (GV*)sv; + gv = (GV*)sv; goto do_fstat; } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { - tmpgv = (GV*)SvRV(sv); + gv = (GV*)SvRV(sv); goto do_fstat; } sv_setpv(PL_statname, SvPV(sv,n_a)); @@ -2546,12 +2586,20 @@ PP(pp_stat) #if Uid_t_size > IVSIZE PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid))); #else +# if Uid_t_sign <= 0 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid))); +# else + PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid))); +# endif #endif #if Gid_t_size > IVSIZE PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid))); #else +# if Gid_t_sign <= 0 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid))); +# else + PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid))); +# endif #endif #ifdef USE_STAT_RDEV PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev))); @@ -3045,10 +3093,10 @@ PP(pp_fttext) len = 512; } else { - if (ckWARN(WARN_UNOPENED)) { + dTHR; + if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) { gv = cGVOP_gv; - Perl_warner(aTHX_ WARN_UNOPENED, "Test on unopened file <%s>", - GvENAME(gv)); + report_evil_fh(gv, GvIO(gv), PL_op->op_type); } SETERRNO(EBADF,RMS$_IFI); RETPUSHUNDEF; @@ -3070,7 +3118,7 @@ PP(pp_fttext) (void)PerlIO_close(fp); RETPUSHUNDEF; } - do_binmode(fp, '<', TRUE); + do_binmode(fp, '<', O_BINARY); len = PerlIO_read(fp, tbuf, sizeof(tbuf)); (void)PerlIO_close(fp); if (len <= 0) { @@ -3672,6 +3720,8 @@ PP(pp_fork) EXTEND(SP, 1); PERL_FLUSHALL_FOR_CHILD; childpid = PerlProc_fork(); + if (childpid == -1) + RETSETUNDEF; PUSHi(childpid); RETURN; # else @@ -3688,7 +3738,12 @@ PP(pp_wait) int argflags; childpid = wait4pid(-1, &argflags, 0); +# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS) + /* 0 and -1 are both error returns (the former applies to WNOHANG case) */ + STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1); +# else STATUS_NATIVE_SET((childpid > 0) ? argflags : -1); +# endif XPUSHi(childpid); RETURN; #else @@ -3707,7 +3762,12 @@ PP(pp_waitpid) optype = POPi; childpid = TOPi; childpid = wait4pid(childpid, &argflags, optype); +# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS) + /* 0 and -1 are both error returns (the former applies to WNOHANG case) */ + STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1); +# else STATUS_NATIVE_SET((childpid > 0) ? argflags : -1); +# endif SETi(childpid); RETURN; #else @@ -3735,7 +3795,7 @@ PP(pp_system) } } PERL_FLUSHALL_FOR_CHILD; -#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) +#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) && !defined(__CYGWIN__) || defined(PERL_MICRO) if (PerlProc_pipe(pp) >= 0) did_pipes = 1; while ((childpid = vfork()) == -1) { @@ -3754,13 +3814,17 @@ PP(pp_system) if (childpid > 0) { if (did_pipes) PerlLIO_close(pp[1]); +#ifndef PERL_MICRO rsignal_save(SIGINT, SIG_IGN, &ihand); rsignal_save(SIGQUIT, SIG_IGN, &qhand); +#endif do { result = wait4pid(childpid, &status, 0); } while (result == -1 && errno == EINTR); +#ifndef PERL_MICRO (void)rsignal_restore(SIGINT, &ihand); (void)rsignal_restore(SIGQUIT, &qhand); +#endif STATUS_NATIVE_SET(result == -1 ? -1 : status); do_execfree(); /* free any memory child malloced on vfork */ SP = ORIGMARK; @@ -3804,6 +3868,8 @@ PP(pp_system) } PerlProc__exit(-1); #else /* ! FORK or VMS or OS/2 */ + PL_statusvalue = 0; + result = 0; if (PL_op->op_flags & OPf_STACKED) { SV *really = *++MARK; value = (I32)do_aspawn(really, (void **)MARK, (void **)SP); @@ -3813,10 +3879,12 @@ PP(pp_system) else { value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), n_a)); } + if (PL_statusvalue == -1) /* hint that value must be returned as is */ + result = 1; STATUS_NATIVE_SET(value); do_execfree(); SP = ORIGMARK; - PUSHi(STATUS_CURRENT); + PUSHi(result ? value : STATUS_CURRENT); #endif /* !FORK or VMS */ RETURN; } @@ -4762,46 +4830,88 @@ PP(pp_gpwent) #ifdef HAS_PASSWD I32 which = PL_op->op_type; register SV *sv; - struct passwd *pwent; STRLEN n_a; -#if defined(HAS_GETSPENT) || defined(HAS_GETSPNAM) - struct spwd *spwent = NULL; -#endif + struct passwd *pwent = NULL; + /* + * We currently support only the SysV getsp* shadow password interface. + * The interface is declared in and often one needs to link + * with -lsecurity or some such. + * This interface is used at least by Solaris, HP-UX, IRIX, and Linux. + * (and SCO?) + * + * AIX getpwnam() is clever enough to return the encrypted password + * only if the caller (euid?) is root. + * + * There are at least two other shadow password APIs. Many platforms + * seem to contain more than one interface for accessing the shadow + * password databases, possibly for compatibility reasons. + * The getsp*() is by far he simplest one, the other two interfaces + * are much more complicated, but also very similar to each other. + * + * + * + * + * struct pr_passwd *getprpw*(); + * The password is in + * char getprpw*(...).ufld.fd_encrypt[] + * Mention HAS_GETPRPWNAM here so that Configure probes for it. + * + * + * + * + * struct es_passwd *getespw*(); + * The password is in + * char *(getespw*(...).ufld.fd_encrypt) + * Mention HAS_GETESPWNAM here so that Configure probes for it. + * + * Mention I_PROT here so that Configure probes for it. + * + * In HP-UX for getprpw*() the manual page claims that one should include + * instead of , but that is not needed + * if one includes as that includes , + * and pp_sys.c already includes if there is such. + * + * Note that is already probed for, but currently + * it is only included in special cases. + * + * In Digital UNIX/Tru64 if using the getespw*() (which seems to be + * be preferred interface, even though also the getprpw*() interface + * is available) one needs to link with -lsecurity -ldb -laud -lm. + * One also needs to call set_auth_parameters() in main() before + * doing anything else, whether one is using getespw*() or getprpw*(). + * + * Note that accessing the shadow databases can be magnitudes + * slower than accessing the standard databases. + * + * --jhi + */ - if (which == OP_GPWNAM) - pwent = getpwnam(POPpx); - else if (which == OP_GPWUID) - pwent = getpwuid(POPi); - else -#ifdef HAS_GETPWENT - pwent = (struct passwd *)getpwent(); -#else + switch (which) { + case OP_GPWNAM: + pwent = getpwnam(POPpx); + break; + case OP_GPWUID: + pwent = getpwuid((Uid_t)POPi); + break; + case OP_GPWENT: +# ifdef HAS_GETPWENT + pwent = getpwent(); +# else DIE(aTHX_ PL_no_func, "getpwent"); -#endif - -#ifdef HAS_GETSPNAM - if (which == OP_GPWNAM) { - if (pwent) - spwent = getspnam(pwent->pw_name); - } -# ifdef HAS_GETSPUID /* AFAIK there isn't any anywhere. --jhi */ - else if (which == OP_GPWUID) { - if (pwent) - spwent = getspnam(pwent->pw_name); +# endif + break; } -# endif -# ifdef HAS_GETSPENT - else - spwent = (struct spwd *)getspent(); -# endif -#endif EXTEND(SP, 10); if (GIMME != G_ARRAY) { PUSHs(sv = sv_newmortal()); if (pwent) { if (which == OP_GPWNAM) +# if Uid_t_sign <= 0 sv_setiv(sv, (IV)pwent->pw_uid); +# else + sv_setuv(sv, (UV)pwent->pw_uid); +# endif else sv_setpv(sv, pwent->pw_name); } @@ -4813,70 +4923,112 @@ PP(pp_gpwent) sv_setpv(sv, pwent->pw_name); PUSHs(sv = sv_mortalcopy(&PL_sv_no)); -#ifdef PWPASSWD -# if defined(HAS_GETSPENT) || defined(HAS_GETSPNAM) - if (spwent) - sv_setpv(sv, spwent->sp_pwdp); - else - sv_setpv(sv, pwent->pw_passwd); -# else - sv_setpv(sv, pwent->pw_passwd); + SvPOK_off(sv); + /* If we have getspnam(), we try to dig up the shadow + * password. If we are underprivileged, the shadow + * interface will set the errno to EACCES or similar, + * and return a null pointer. If this happens, we will + * use the dummy password (usually "*" or "x") from the + * standard password database. + * + * In theory we could skip the shadow call completely + * if euid != 0 but in practice we cannot know which + * security measures are guarding the shadow databases + * on a random platform. + * + * Resist the urge to use additional shadow interfaces. + * Divert the urge to writing an extension instead. + * + * --jhi */ +# ifdef HAS_GETSPNAM + { + struct spwd *spwent; + int saverrno; /* Save and restore errno so that + * underprivileged attempts seem + * to have never made the unsccessful + * attempt to retrieve the shadow password. */ + + saverrno = errno; + spwent = getspnam(pwent->pw_name); + errno = saverrno; + if (spwent && spwent->sp_pwdp) + sv_setpv(sv, spwent->sp_pwdp); + } +# endif + if (!SvPOK(sv)) /* Use the standard password, then. */ + sv_setpv(sv, pwent->pw_passwd); + +# ifndef INCOMPLETE_TAINTS + /* passwd is tainted because user himself can diddle with it. + * admittedly not much and in a very limited way, but nevertheless. */ + SvTAINTED_on(sv); # endif -#endif PUSHs(sv = sv_mortalcopy(&PL_sv_no)); +# if Uid_t_sign <= 0 sv_setiv(sv, (IV)pwent->pw_uid); +# else + sv_setuv(sv, (UV)pwent->pw_uid); +# endif PUSHs(sv = sv_mortalcopy(&PL_sv_no)); +# if Uid_t_sign <= 0 sv_setiv(sv, (IV)pwent->pw_gid); - - /* pw_change, pw_quota, and pw_age are mutually exclusive. */ +# else + sv_setuv(sv, (UV)pwent->pw_gid); +# endif + /* pw_change, pw_quota, and pw_age are mutually exclusive-- + * because of the poor interface of the Perl getpw*(), + * not because there's some standard/convention saying so. + * A better interface would have been to return a hash, + * but we are accursed by our history, alas. --jhi. */ PUSHs(sv = sv_mortalcopy(&PL_sv_no)); -#ifdef PWCHANGE +# ifdef PWCHANGE sv_setiv(sv, (IV)pwent->pw_change); -#else -# ifdef PWQUOTA - sv_setiv(sv, (IV)pwent->pw_quota); # else -# ifdef PWAGE +# ifdef PWQUOTA + sv_setiv(sv, (IV)pwent->pw_quota); +# else +# ifdef PWAGE sv_setpv(sv, pwent->pw_age); +# endif # endif # endif -#endif - /* pw_class and pw_comment are mutually exclusive. */ + /* pw_class and pw_comment are mutually exclusive--. + * see the above note for pw_change, pw_quota, and pw_age. */ PUSHs(sv = sv_mortalcopy(&PL_sv_no)); -#ifdef PWCLASS +# ifdef PWCLASS sv_setpv(sv, pwent->pw_class); -#else -# ifdef PWCOMMENT +# else +# ifdef PWCOMMENT sv_setpv(sv, pwent->pw_comment); +# endif # endif -#endif PUSHs(sv = sv_mortalcopy(&PL_sv_no)); -#ifdef PWGECOS +# ifdef PWGECOS sv_setpv(sv, pwent->pw_gecos); -#endif -#ifndef INCOMPLETE_TAINTS +# endif +# ifndef INCOMPLETE_TAINTS /* pw_gecos is tainted because user himself can diddle with it. */ SvTAINTED_on(sv); -#endif +# endif PUSHs(sv = sv_mortalcopy(&PL_sv_no)); sv_setpv(sv, pwent->pw_dir); PUSHs(sv = sv_mortalcopy(&PL_sv_no)); sv_setpv(sv, pwent->pw_shell); -#ifndef INCOMPLETE_TAINTS +# ifndef INCOMPLETE_TAINTS /* pw_shell is tainted because user himself can diddle with it. */ SvTAINTED_on(sv); -#endif +# endif -#ifdef PWEXPIRE +# ifdef PWEXPIRE PUSHs(sv = sv_mortalcopy(&PL_sv_no)); sv_setiv(sv, (IV)pwent->pw_expire); -#endif +# endif } RETURN; #else @@ -4889,9 +5041,6 @@ PP(pp_spwent) djSP; #if defined(HAS_PASSWD) && defined(HAS_SETPWENT) setpwent(); -# ifdef HAS_SETSPENT - setspent(); -# endif RETPUSHYES; #else DIE(aTHX_ PL_no_func, "setpwent"); @@ -4903,9 +5052,6 @@ PP(pp_epwent) djSP; #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT) endpwent(); -# ifdef HAS_ENDSPENT - endspent(); -# endif RETPUSHYES; #else DIE(aTHX_ PL_no_func, "endpwent");