/*
* Cygwin extras
*/
#include "EXTERN.h"
#include "perl.h"
#undef USE_DYNAMIC_LOADING
#include "XSUB.h"
#include <unistd.h>
#include <process.h>
#include <sys/cygwin.h>
#include <mntent.h>
#include <alloca.h>
#include <dlfcn.h>
/*
* 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, (Sighandler_t) SIG_IGN, &ihand);
rsignal_save(SIGQUIT, (Sighandler_t) 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((SV *)*mark, n_a);
else
*a++ = "";
*a = (char*)NULL;
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 const **a;
char *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,const 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 = (char*)NULL;
if (!PL_Argv[0])
return -1;
return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv);
}
/* see also Cwd.pm */
XS(Cygwin_cwd)
{
dXSARGS;
char *cwd;
/* See http://rt.perl.org/rt3/Ticket/Display.html?id=38628
There is Cwd->cwd() usage in the wild, and previous versions didn't die.
*/
if(items > 1)
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;
}
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;
}
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;
}
XS(XS_Cygwin_win_to_posix_path)
{
dXSARGS;
int absolute_flag = 0;
STRLEN len;
int err;
char *pathname, *buf;
if (items < 1 || items > 2)
Perl_croak(aTHX_ "Usage: Cygwin::win_to_posix_path(pathname, [absolute])");
pathname = SvPV(ST(0), len);
if (items == 2)
absolute_flag = SvTRUE(ST(1));
if (!len)
Perl_croak(aTHX_ "can't convert empty path");
buf = (char *) safemalloc (len + 260 + 1001);
if (absolute_flag)
err = cygwin_conv_to_full_posix_path(pathname, buf);
else
err = cygwin_conv_to_posix_path(pathname, buf);
if (!err) {
ST(0) = sv_2mortal(newSVpv(buf, 0));
safefree(buf);
XSRETURN(1);
} else {
safefree(buf);
XSRETURN_UNDEF;
}
}
XS(XS_Cygwin_posix_to_win_path)
{
dXSARGS;
int absolute_flag = 0;
STRLEN len;
int err;
char *pathname, *buf;
if (items < 1 || items > 2)
Perl_croak(aTHX_ "Usage: Cygwin::posix_to_win_path(pathname, [absolute])");
pathname = SvPV(ST(0), len);
if (items == 2)
absolute_flag = SvTRUE(ST(1));
if (!len)
Perl_croak(aTHX_ "can't convert empty path");
buf = (char *) safemalloc(len + 260 + 1001);
if (absolute_flag)
err = cygwin_conv_to_full_win32_path(pathname, buf);
else
err = cygwin_conv_to_win32_path(pathname, buf);
if (!err) {
ST(0) = sv_2mortal(newSVpv(buf, 0));
safefree(buf);
XSRETURN(1);
} else {
safefree(buf);
XSRETURN_UNDEF;
}
}
XS(XS_Cygwin_mount_table)
{
dXSARGS;
struct mntent *mnt;
if (items != 0)
Perl_croak(aTHX_ "Usage: Cygwin::mount_table");
/* => array of [mnt_dir mnt_fsname mnt_type mnt_opts] */
setmntent (0, 0);
while ((mnt = getmntent (0))) {
AV* av = newAV();
av_push(av, newSVpvn(mnt->mnt_dir, strlen(mnt->mnt_dir)));
av_push(av, newSVpvn(mnt->mnt_fsname, strlen(mnt->mnt_fsname)));
av_push(av, newSVpvn(mnt->mnt_type, strlen(mnt->mnt_type)));
av_push(av, newSVpvn(mnt->mnt_opts, strlen(mnt->mnt_opts)));
XPUSHs(sv_2mortal(newRV_noinc((SV*)av)));
}
endmntent (0);
PUTBACK;
}
XS(XS_Cygwin_mount_flags)
{
dXSARGS;
char *pathname;
char flags[260];
if (items != 1)
Perl_croak(aTHX_ "Usage: Cygwin::mount_flags(mnt_dir|'/cygwin')");
pathname = SvPV_nolen(ST(0));
/* TODO: Check for cygdrive registry setting,
* and then use CW_GET_CYGDRIVE_INFO
*/
if (!strcmp(pathname, "/cygdrive")) {
char user[260];
char system[260];
char user_flags[260];
char system_flags[260];
cygwin_internal (CW_GET_CYGDRIVE_INFO, user, system, user_flags,
system_flags);
if (strlen(user) > 0) {
sprintf(flags, "%s,cygdrive,%s", user_flags, user);
} else {
sprintf(flags, "%s,cygdrive,%s", system_flags, system);
}
ST(0) = sv_2mortal(newSVpv(flags, 0));
XSRETURN(1);
} else {
struct mntent *mnt;
setmntent (0, 0);
while ((mnt = getmntent (0))) {
if (!strcmp(pathname, mnt->mnt_dir)) {
strcpy(flags, mnt->mnt_type);
if (strlen(mnt->mnt_opts) > 0) {
strcat(flags, ",");
strcat(flags, mnt->mnt_opts);
}
break;
}
}
endmntent (0);
ST(0) = sv_2mortal(newSVpv(flags, 0));
XSRETURN(1);
}
}
XS(XS_Cygwin_is_binmount)
{
dXSARGS;
char *pathname;
if (items != 1)
Perl_croak(aTHX_ "Usage: Cygwin::is_binmount(pathname)");
pathname = SvPV_nolen(ST(0));
ST(0) = boolSV(cygwin_internal(CW_GET_BINMODE, pathname));
XSRETURN(1);
}
void
init_os_extras(void)
{
dTHX;
char *file = __FILE__;
void *handle;
newXS("Cwd::cwd", Cygwin_cwd, file);
newXSproto("Cygwin::winpid_to_pid", XS_Cygwin_winpid_to_pid, file, "$");
newXSproto("Cygwin::pid_to_winpid", XS_Cygwin_pid_to_winpid, file, "$");
newXSproto("Cygwin::win_to_posix_path", XS_Cygwin_win_to_posix_path, file, "$;$");
newXSproto("Cygwin::posix_to_win_path", XS_Cygwin_posix_to_win_path, file, "$;$");
newXSproto("Cygwin::mount_table", XS_Cygwin_mount_table, file, "");
newXSproto("Cygwin::mount_flags", XS_Cygwin_mount_flags, file, "$");
newXSproto("Cygwin::is_binmount", XS_Cygwin_is_binmount, file, "$");
/* Initialize Win32CORE if it has been statically linked. */
handle = dlopen(NULL, RTLD_LAZY);
if (handle) {
void (*pfn_init)(pTHX);
pfn_init = (void (*)(pTHX))dlsym(handle, "init_Win32CORE");
if (pfn_init)
pfn_init(aTHX);
dlclose(handle);
}
}