/* * Cygwin extras */ #include "EXTERN.h" #include "perl.h" #undef USE_DYNAMIC_LOADING #include "XSUB.h" #include #include #include /* * pp_system() implemented via spawn() * - more efficient and useful when embedding Perl in non-Cygwin apps * - code mostly borrowed from djgpp.c */ static int do_spawnvp (const char *path, const char * const *argv) { dTHX; Sigsave_t ihand,qhand; int childpid, result, status; rsignal_save(SIGINT, SIG_IGN, &ihand); rsignal_save(SIGQUIT, SIG_IGN, &qhand); childpid = spawnvp(_P_NOWAIT,path,argv); if (childpid < 0) { status = -1; if(ckWARN(WARN_EXEC)) Perl_warner(aTHX_ packWARN(WARN_EXEC),"Can't spawn \"%s\": %s", path,Strerror (errno)); } else { do { result = wait4pid(childpid, &status, 0); } while (result == -1 && errno == EINTR); if(result < 0) status = -1; } (void)rsignal_restore(SIGINT, &ihand); (void)rsignal_restore(SIGQUIT, &qhand); return status; } int do_aspawn (SV *really, void **mark, void **sp) { dTHX; int rc; char **a,*tmps,**argv; STRLEN n_a; if (sp<=mark) return -1; a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); while (++mark <= sp) if (*mark) *a++ = SvPVx(*mark, n_a); else *a++ = ""; *a = Nullch; if (argv[0][0] != '/' && argv[0][0] != '\\' && !(argv[0][0] && argv[0][1] == ':' && (argv[0][2] == '/' || argv[0][2] != '\\')) ) /* will swawnvp use PATH? */ TAINT_ENV(); /* testing IFS here is overkill, probably */ if (really && *(tmps = SvPV(really, n_a))) rc=do_spawnvp (tmps,(const char * const *)argv); else rc=do_spawnvp (argv[0],(const char *const *)argv); return rc; } int do_spawn (char *cmd) { dTHX; char **a,*s,*metachars = "$&*(){}[]'\";\\?>|<~`\n"; const char *command[4]; while (*cmd && isSPACE(*cmd)) cmd++; if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) cmd+=5; /* save an extra exec if possible */ /* see if there are shell metacharacters in it */ if (strstr (cmd,"...")) goto doshell; if (*cmd=='.' && isSPACE (cmd[1])) goto doshell; if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) goto doshell; for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ if (*s=='=') goto doshell; for (s=cmd; *s; s++) if (strchr (metachars,*s)) { if (*s=='\n' && s[1]=='\0') { *s='\0'; break; } doshell: command[0] = "sh"; command[1] = "-c"; command[2] = cmd; command[3] = NULL; return do_spawnvp("sh",command); } Newx (PL_Argv,(s-cmd)/2+2,char*); PL_Cmd=savepvn (cmd,s-cmd); a=PL_Argv; for (s=PL_Cmd; *s;) { while (*s && isSPACE (*s)) s++; if (*s) *(a++)=s; while (*s && !isSPACE (*s)) s++; if (*s) *s++='\0'; } *a=Nullch; if (!PL_Argv[0]) return -1; return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv); } /* see also Cwd.pm */ static XS(Cygwin_cwd) { dXSARGS; char *cwd; if(items != 0) Perl_croak(aTHX_ "Usage: Cwd::cwd()"); if((cwd = getcwd(NULL, -1))) { ST(0) = sv_2mortal(newSVpv(cwd, 0)); free(cwd); #ifndef INCOMPLETE_TAINTS SvTAINTED_on(ST(0)); #endif XSRETURN(1); } XSRETURN_UNDEF; } static XS(XS_Cygwin_pid_to_winpid) { dXSARGS; dXSTARG; pid_t pid, RETVAL; if (items != 1) Perl_croak(aTHX_ "Usage: Cygwin::pid_to_winpid(pid)"); pid = (pid_t)SvIV(ST(0)); if ((RETVAL = cygwin_internal(CW_CYGWIN_PID_TO_WINPID, pid)) > 0) { XSprePUSH; PUSHi((IV)RETVAL); XSRETURN(1); } XSRETURN_UNDEF; } static XS(XS_Cygwin_winpid_to_pid) { dXSARGS; dXSTARG; pid_t pid, RETVAL; if (items != 1) Perl_croak(aTHX_ "Usage: Cygwin::winpid_to_pid(pid)"); pid = (pid_t)SvIV(ST(0)); if ((RETVAL = cygwin32_winpid_to_pid(pid)) > 0) { XSprePUSH; PUSHi((IV)RETVAL); XSRETURN(1); } XSRETURN_UNDEF; } void init_os_extras(void) { char *file = __FILE__; dTHX; newXS("Cwd::cwd", Cygwin_cwd, file); newXS("Cygwin::winpid_to_pid", XS_Cygwin_winpid_to_pid, file); newXS("Cygwin::pid_to_winpid", XS_Cygwin_pid_to_winpid, file); }