static VALUE
passwd_iterate(void)
{
struct passwd *pw;
setpwent();
while (pw = getpwent()) {
rb_yield(setup_passwd(pw));
}
return Qnil;
}
/* Returns an entry from the /etc/passwd file. The first time it is called it
* opens the file and returns the first entry; each successive call returns
* the next entry, or nil if the end of the file has been reached.
*
* To close the file when processing is complete, call endpwent.
*
* Each entry is returned as a Struct::Passwd:
*
* - Passwd#name contains the short login name of the user as a String.
*
* - Passwd#passwd contains the encrypted password of the user as a String.
* an 'x' is returned if shadow passwords are in use. An '*' is returned
* if the user cannot log in using a password.
*
* - Passwd#uid contains the integer user ID (uid) of the user.
*
* - Passwd#gid contains the integer group ID (gid) of the user's primary group.
*
* - Passwd#gecos contains a longer String description of the user, such as
* a full name. Some Unix systems provide structured information in the
* gecos field, but this is system-dependent.
*
* - Passwd#dir contains the path to the home directory of the user as a String.
*
* - Passwd#shell contains the path to the login shell of the user as a String.
*/
static VALUE
etc_getpwent(VALUE obj)
{
#ifdef HAVE_GETPWENT
struct passwd *pw;
if (pw = getpwent()) {
return setup_passwd(pw);
}
#endif
return Qnil;
}
/* Returns the /etc/passwd information for the user with specified login name.
*
* The information is returned as a Struct::Passwd; see getpwent above for
* details.
*
* e.g. * Etc.getpwnam('root') -> #<struct Struct::Passwd name="root",
* passwd="x", uid=0, gid=0, gecos="root",dir="/root", shell="/bin/bash">
*/
static VALUE
etc_getpwnam(VALUE obj, VALUE nam)
{
#ifdef HAVE_GETPWENT
struct passwd *pwd;
SafeStringValue(nam);
pwd = getpwnam(RSTRING_PTR(nam));
if (pwd == 0) rb_raise(rb_eArgError, "can't find user for %s", RSTRING_PTR(nam));
return setup_passwd(pwd);
#else
return Qnil;
#endif
}
/* call-seq:
* Etc.passwd { |struct| block } -> Passwd
* Etc.passwd -> Passwd
*
* Provides a convenient Ruby iterator which executes a block for each entry
* in the /etc/passwd file.
*
* The code block is passed an Passwd struct.
*
* See ::getpwent above for details.
*
* Example:
*
* require 'etc'
*
* Etc.passwd {|u|
* puts u.name + " = " + u.gecos
* }
*
*/
static VALUE
etc_passwd(VALUE obj)
{
#ifdef HAVE_GETPWENT
struct passwd *pw;
if (rb_block_given_p()) {
each_passwd();
}
else if (pw = getpwent()) {
return setup_passwd(pw);
}
#endif
return Qnil;
}
/* call-seq:
* getpwnam(name) -> Passwd
*
* Returns the /etc/passwd information for the user with specified login
* +name+.
*
* The information is returned as a Passwd struct.
*
* See the unix manpage for <code>getpwnam(3)</code> for more detail.
*
* === Example:
*
* Etc.getpwnam('root')
* #=> #<struct Etc::Passwd name="root", passwd="x", uid=0, gid=0, gecos="root",dir="/root", shell="/bin/bash">
*/
static VALUE
etc_getpwnam(VALUE obj, VALUE nam)
{
#ifdef HAVE_GETPWENT
struct passwd *pwd;
const char *p = StringValueCStr(nam);
rb_check_safe_obj(nam);
pwd = getpwnam(p);
if (pwd == 0) rb_raise(rb_eArgError, "can't find user for %"PRIsVALUE, nam);
return setup_passwd(pwd);
#else
return Qnil;
#endif
}
/* Provides a convenient Ruby iterator which executes a block for each entry
* in the /etc/passwd file.
*
* The code block is passed an Etc::Passwd struct; see getpwent above for
* details.
*
* Example:
*
* require 'etc'
*
* Etc.passwd {|u|
* puts u.name + " = " + u.gecos
* }
*
*/
static VALUE
etc_passwd(VALUE obj)
{
#ifdef HAVE_GETPWENT
struct passwd *pw;
rb_secure(4);
if (rb_block_given_p()) {
if (passwd_blocking) {
rb_raise(rb_eRuntimeError, "parallel passwd iteration");
}
passwd_blocking = Qtrue;
rb_ensure(passwd_iterate, 0, passwd_ensure, 0);
}
if (pw = getpwent()) {
return setup_passwd(pw);
}
#endif
return Qnil;
}
/* call-seq:
* getpwuid(uid) -> Passwd
*
* Returns the /etc/passwd information for the user with the given integer +uid+.
*
* The information is returned as a Passwd struct.
*
* If +uid+ is omitted, the value from <code>Passwd[:uid]</code> is returned
* instead.
*
* See the unix manpage for <code>getpwuid(3)</code> for more detail.
*
* === Example:
*
* Etc.getpwuid(0)
* #=> #<struct Etc::Passwd name="root", passwd="x", uid=0, gid=0, gecos="root",dir="/root", shell="/bin/bash">
*/
static VALUE
etc_getpwuid(int argc, VALUE *argv, VALUE obj)
{
#if defined(HAVE_GETPWENT)
VALUE id;
rb_uid_t uid;
struct passwd *pwd;
if (rb_scan_args(argc, argv, "01", &id) == 1) {
uid = NUM2UIDT(id);
}
else {
uid = getuid();
}
pwd = getpwuid(uid);
if (pwd == 0) rb_raise(rb_eArgError, "can't find user for %d", (int)uid);
return setup_passwd(pwd);
#else
return Qnil;
#endif
}
