diff options
Diffstat (limited to 'trunk/ext/etc/etc.c')
| -rw-r--r-- | trunk/ext/etc/etc.c | 548 |
1 files changed, 0 insertions, 548 deletions
diff --git a/trunk/ext/etc/etc.c b/trunk/ext/etc/etc.c deleted file mode 100644 index f09c8d76db..0000000000 --- a/trunk/ext/etc/etc.c +++ /dev/null @@ -1,548 +0,0 @@ -/************************************************ - - etc.c - - - $Author$ - created at: Tue Mar 22 18:39:19 JST 1994 - -************************************************/ - -#include "ruby.h" - -#include <sys/types.h> -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#ifdef HAVE_GETPWENT -#include <pwd.h> -#endif - -#ifdef HAVE_GETGRENT -#include <grp.h> -#endif - -#ifndef HAVE_TYPE_UID_T -#define uid_t int -#endif - -static VALUE sPasswd, sGroup; - -#ifndef _WIN32 -char *getenv(); -#endif -char *getlogin(); - -/* Returns the short user name of the currently logged in user. - * Unfortunately, it is often rather easy to fool getlogin(). - * Avoid getlogin() for security-related purposes. - * - * e.g. - * Etc.getlogin -> 'guest' - */ -static VALUE -etc_getlogin(VALUE obj) -{ - char *login; - - rb_secure(4); -#ifdef HAVE_GETLOGIN - login = getlogin(); - if (!login) login = getenv("USER"); -#else - login = getenv("USER"); -#endif - - if (login) - return rb_tainted_str_new2(login); - return Qnil; -} - -#if defined(HAVE_GETPWENT) || defined(HAVE_GETGRENT) -static VALUE -safe_setup_str(const char *str) -{ - if (str == 0) str = ""; - return rb_tainted_str_new2(str); -} -#endif - -#ifdef HAVE_GETPWENT -static VALUE -setup_passwd(struct passwd *pwd) -{ - if (pwd == 0) rb_sys_fail("/etc/passwd"); - return rb_struct_new(sPasswd, - safe_setup_str(pwd->pw_name), -#ifdef HAVE_ST_PW_PASSWD - safe_setup_str(pwd->pw_passwd), -#endif - UIDT2NUM(pwd->pw_uid), - GIDT2NUM(pwd->pw_gid), -#ifdef HAVE_ST_PW_GECOS - safe_setup_str(pwd->pw_gecos), -#endif - safe_setup_str(pwd->pw_dir), - safe_setup_str(pwd->pw_shell), -#ifdef HAVE_ST_PW_CHANGE - INT2NUM(pwd->pw_change), -#endif -#ifdef HAVE_ST_PW_QUOTA - INT2NUM(pwd->pw_quota), -#endif -#ifdef HAVE_ST_PW_AGE - PW_AGE2VAL(pwd->pw_age), -#endif -#ifdef HAVE_ST_PW_CLASS - safe_setup_str(pwd->pw_class), -#endif -#ifdef HAVE_ST_PW_COMMENT - safe_setup_str(pwd->pw_comment), -#endif -#ifdef HAVE_ST_PW_EXPIRE - INT2NUM(pwd->pw_expire), -#endif - 0 /*dummy*/ - ); -} -#endif - -/* Returns the /etc/passwd information for the user with specified integer - * user id (uid). - * - * The information is returned as a Struct::Passwd; see getpwent above for - * details. - * - * e.g. * Etc.getpwuid(0) -> #<struct Struct::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; - uid_t uid; - struct passwd *pwd; - - rb_secure(4); - 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", uid); - return setup_passwd(pwd); -#else - return Qnil; -#endif -} - -/* 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 -} - -#ifdef HAVE_GETPWENT -static int passwd_blocking = 0; -static VALUE -passwd_ensure(void) -{ - passwd_blocking = Qfalse; - return Qnil; -} - -static VALUE -passwd_iterate(void) -{ - struct passwd *pw; - - setpwent(); - while (pw = getpwent()) { - rb_yield(setup_passwd(pw)); - } - endpwent(); - 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 Struct::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; -} - -/* Resets the process of reading the /etc/passwd file, so that the next call - * to getpwent will return the first entry again. - */ -static VALUE -etc_setpwent(VALUE obj) -{ -#ifdef HAVE_GETPWENT - setpwent(); -#endif - return Qnil; -} - -/* Ends the process of scanning through the /etc/passwd file begun with - * getpwent, and closes the file. - */ -static VALUE -etc_endpwent(VALUE obj) -{ -#ifdef HAVE_GETPWENT - endpwent(); -#endif - 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; -} - -#ifdef HAVE_GETGRENT -static VALUE -setup_group(struct group *grp) -{ - VALUE mem; - char **tbl; - - mem = rb_ary_new(); - tbl = grp->gr_mem; - while (*tbl) { - rb_ary_push(mem, safe_setup_str(*tbl)); - tbl++; - } - return rb_struct_new(sGroup, - safe_setup_str(grp->gr_name), -#ifdef HAVE_ST_GR_PASSWD - safe_setup_str(grp->gr_passwd), -#endif - GIDT2NUM(grp->gr_gid), - mem); -} -#endif - -/* Returns information about the group with specified integer group id (gid), - * as found in /etc/group. - * - * The information is returned as a Struct::Group; see getgrent above for - * details. - * - * e.g. Etc.getgrgid(100) -> #<struct Struct::Group name="users", passwd="x", - * gid=100, mem=["meta", "root"]> - * - */ -static VALUE -etc_getgrgid(int argc, VALUE *argv, VALUE obj) -{ -#ifdef HAVE_GETGRENT - VALUE id; - gid_t gid; - struct group *grp; - - rb_secure(4); - if (rb_scan_args(argc, argv, "01", &id) == 1) { - gid = NUM2GIDT(id); - } - else { - gid = getgid(); - } - grp = getgrgid(gid); - if (grp == 0) rb_raise(rb_eArgError, "can't find group for %d", gid); - return setup_group(grp); -#else - return Qnil; -#endif -} - -/* Returns information about the group with specified String name, as found - * in /etc/group. - * - * The information is returned as a Struct::Group; see getgrent above for - * details. - * - * e.g. Etc.getgrnam('users') -> #<struct Struct::Group name="users", - * passwd="x", gid=100, mem=["meta", "root"]> - * - */ -static VALUE -etc_getgrnam(VALUE obj, VALUE nam) -{ -#ifdef HAVE_GETGRENT - struct group *grp; - - rb_secure(4); - SafeStringValue(nam); - grp = getgrnam(RSTRING_PTR(nam)); - if (grp == 0) rb_raise(rb_eArgError, "can't find group for %s", RSTRING_PTR(nam)); - return setup_group(grp); -#else - return Qnil; -#endif -} - -#ifdef HAVE_GETGRENT -static int group_blocking = 0; -static VALUE -group_ensure(void) -{ - group_blocking = Qfalse; - return Qnil; -} - -static VALUE -group_iterate(void) -{ - struct group *pw; - - setgrent(); - while (pw = getgrent()) { - rb_yield(setup_group(pw)); - } - endgrent(); - return Qnil; -} -#endif - -/* Provides a convenient Ruby iterator which executes a block for each entry - * in the /etc/group file. - * - * The code block is passed an Struct::Group struct; see getgrent above for - * details. - * - * Example: - * - * require 'etc' - * - * Etc.group {|g| - * puts g.name + ": " + g.mem.join(', ') - * } - * - */ -static VALUE -etc_group(VALUE obj) -{ -#ifdef HAVE_GETGRENT - struct group *grp; - - rb_secure(4); - if (rb_block_given_p()) { - if (group_blocking) { - rb_raise(rb_eRuntimeError, "parallel group iteration"); - } - group_blocking = Qtrue; - rb_ensure(group_iterate, 0, group_ensure, 0); - } - if (grp = getgrent()) { - return setup_group(grp); - } -#endif - return Qnil; -} - -/* Resets the process of reading the /etc/group file, so that the next call - * to getgrent will return the first entry again. - */ -static VALUE -etc_setgrent(VALUE obj) -{ -#ifdef HAVE_GETGRENT - setgrent(); -#endif - return Qnil; -} - -/* Ends the process of scanning through the /etc/group file begun by - * getgrent, and closes the file. - */ -static VALUE -etc_endgrent(VALUE obj) -{ -#ifdef HAVE_GETGRENT - endgrent(); -#endif - return Qnil; -} - -/* Returns an entry from the /etc/group 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 endgrent. - * - * Each entry is returned as a Struct::Group: - * - * - Group#name contains the name of the group as a String. - * - * - Group#passwd contains the encrypted password as a String. An 'x' is - * returned if password access to the group is not available; an empty - * string is returned if no password is needed to obtain membership of - * the group. - * - * - Group#gid contains the group's numeric ID as an integer. - * - * - Group#mem is an Array of Strings containing the short login names of the - * members of the group. - */ -static VALUE -etc_getgrent(VALUE obj) -{ -#ifdef HAVE_GETGRENT - struct group *gr; - - if (gr = getgrent()) { - return setup_group(gr); - } -#endif - return Qnil; -} - -/* The etc module provides access to information from the /etc/passwd and - * /etc/group files on Linux and Unix systems. - * - * Documented by mathew <meta@pobox.com>. - */ -void -Init_etc(void) -{ - VALUE mEtc; - - mEtc = rb_define_module("Etc"); - rb_define_module_function(mEtc, "getlogin", etc_getlogin, 0); - - rb_define_module_function(mEtc, "getpwuid", etc_getpwuid, -1); - rb_define_module_function(mEtc, "getpwnam", etc_getpwnam, 1); - rb_define_module_function(mEtc, "setpwent", etc_setpwent, 0); - rb_define_module_function(mEtc, "endpwent", etc_endpwent, 0); - rb_define_module_function(mEtc, "getpwent", etc_getpwent, 0); - rb_define_module_function(mEtc, "passwd", etc_passwd, 0); - - rb_define_module_function(mEtc, "getgrgid", etc_getgrgid, -1); - rb_define_module_function(mEtc, "getgrnam", etc_getgrnam, 1); - rb_define_module_function(mEtc, "group", etc_group, 0); - rb_define_module_function(mEtc, "setgrent", etc_setgrent, 0); - rb_define_module_function(mEtc, "endgrent", etc_endgrent, 0); - rb_define_module_function(mEtc, "getgrent", etc_getgrent, 0); - - sPasswd = rb_struct_define("Passwd", - "name", "passwd", "uid", "gid", -#ifdef HAVE_ST_PW_GECOS - "gecos", -#endif - "dir", "shell", -#ifdef HAVE_ST_PW_CHANGE - "change", -#endif -#ifdef HAVE_ST_PW_QUOTA - "quota", -#endif -#ifdef HAVE_ST_PW_AGE - "age", -#endif -#ifdef HAVE_ST_PW_CLASS - "uclass", -#endif -#ifdef HAVE_ST_PW_COMMENT - "comment", -#endif -#ifdef HAVE_ST_PW_EXPIRE - "expire", -#endif - NULL); - rb_define_const(mEtc, "Passwd", sPasswd); - -#ifdef HAVE_GETGRENT - sGroup = rb_struct_define("Group", "name", -#ifdef HAVE_ST_GR_PASSWD - "passwd", -#endif - "gid", "mem", NULL); - - rb_define_const(mEtc, "Group", sGroup); -#endif -} |