diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/etc/etc.c | 260 |
1 files changed, 177 insertions, 83 deletions
diff --git a/ext/etc/etc.c b/ext/etc/etc.c index 1c1ab813d9..a511baf1a5 100644 --- a/ext/etc/etc.c +++ b/ext/etc/etc.c @@ -40,9 +40,17 @@ 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. +/* call-seq: + * getlogin -> String + * + * 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. + * + * If ::getlogin fails, try ::getpwuid. + * + * See the unix manpage for <code>getpwuid(3)</code> for more detail. * * e.g. * Etc.getlogin -> 'guest' @@ -114,14 +122,22 @@ setup_passwd(struct passwd *pwd) } #endif -/* Returns the /etc/passwd information for the user with specified integer - * user id (uid). +/* call-seq: + * getpwuid(uid) -> Passwd + * + * Returns the /etc/passwd information for the user with the given integer +uid+. * - * The information is returned as a Struct::Passwd; see getpwent above for - * details. + * The information is returned as a Passwd struct. * - * e.g. * Etc.getpwuid(0) -> #<struct Struct::Passwd name="root", - * passwd="x", uid=0, gid=0, gecos="root",dir="/root", shell="/bin/bash"> + * 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 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) @@ -146,13 +162,20 @@ etc_getpwuid(int argc, VALUE *argv, VALUE obj) #endif } -/* Returns the /etc/passwd information for the user with specified login name. +/* 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. * - * The information is returned as a Struct::Passwd; see getpwent above for - * details. + * See the unix manpage for <code>getpwnam(3)</code> for more detail. * - * e.g. * Etc.getpwnam('root') -> #<struct Struct::Passwd name="root", - * passwd="x", uid=0, gid=0, gecos="root",dir="/root", shell="/bin/bash"> + * === Example: + * + * 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) @@ -202,11 +225,16 @@ each_passwd(void) } #endif -/* Provides a convenient Ruby iterator which executes a block for each entry +/* 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 Struct::Passwd struct; see getpwent above for - * details. + * The code block is passed an Passwd struct. + * + * See ::getpwent above for details. * * Example: * @@ -234,11 +262,17 @@ etc_passwd(VALUE obj) return Qnil; } -/* Iterates for each entry in the /etc/passwd file if a block is given. - * If no block is given, returns the enumerator. +/* call-seq: + * Etc::Passwd.each { |struct| block } -> Passwd + * Etc::Passwd.each -> Enumerator + * + * Iterates for each entry in the /etc/passwd file if a block is given. * - * The code block is passed an Struct::Passwd struct; see getpwent above for - * details. + * If no block is given, returns the Enumerator. + * + * The code block is passed an Passwd struct. + * + * See ::getpwent above for details. * * Example: * @@ -263,7 +297,7 @@ etc_each_passwd(VALUE obj) } /* Resets the process of reading the /etc/passwd file, so that the next call - * to getpwent will return the first entry again. + * to ::getpwent will return the first entry again. */ static VALUE etc_setpwent(VALUE obj) @@ -275,7 +309,7 @@ etc_setpwent(VALUE obj) } /* Ends the process of scanning through the /etc/passwd file begun with - * getpwent, and closes the file. + * ::getpwent, and closes the file. */ static VALUE etc_endpwent(VALUE obj) @@ -286,31 +320,16 @@ etc_endpwent(VALUE obj) 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: +/* Returns an entry from the /etc/passwd file. * - * - Passwd#name contains the short login name of the user as a String. + * 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. * - * - 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. + * To close the file when processing is complete, call ::endpwent. * - * - Passwd#uid contains the integer user ID (uid) of the user. + * Each entry is returned as a Passwd struct. * - * - 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) @@ -348,14 +367,20 @@ setup_group(struct group *grp) } #endif -/* Returns information about the group with specified integer group id (gid), +/* call-seq: + * getgrgid(group_id) -> Group + * + * Returns information about the group with specified integer +group_id+, * as found in /etc/group. * - * The information is returned as a Struct::Group; see getgrent above for - * details. + * The information is returned as a Group struct. + * + * See the unix manpage for <code>getgrgid(3)</code> for more detail. * - * e.g. Etc.getgrgid(100) -> #<struct Struct::Group name="users", passwd="x", - * gid=100, mem=["meta", "root"]> + * === Example: + * + * Etc.getgrgid(100) + * #=> #<struct Struct::Group name="users", passwd="x", gid=100, mem=["meta", "root"]> * */ static VALUE @@ -381,14 +406,20 @@ etc_getgrgid(int argc, VALUE *argv, VALUE obj) #endif } -/* Returns information about the group with specified String name, as found - * in /etc/group. +/* call-seq: + * getgrnam(name) -> Group + * + * Returns information about the group with specified +name+, as found in + * /etc/group. + * + * The information is returned as a Group struct. * - * The information is returned as a Struct::Group; see getgrent above for - * details. + * See the unix manpage for <code>getgrnam(3)</code> for more detail. * - * e.g. Etc.getgrnam('users') -> #<struct Struct::Group name="users", - * passwd="x", gid=100, mem=["meta", "root"]> + * === Example: + * + * Etc.getgrnam('users') + * #=> #<struct Struct::Group name="users", passwd="x", gid=100, mem=["meta", "root"]> * */ static VALUE @@ -417,6 +448,7 @@ group_ensure(void) return Qnil; } + static VALUE group_iterate(void) { @@ -443,8 +475,9 @@ each_group(void) /* 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. + * The code block is passed an Group struct. + * + * See ::getgrent above for details. * * Example: * @@ -473,11 +506,15 @@ etc_group(VALUE obj) } #ifdef HAVE_GETGRENT -/* Iterates for each entry in the /etc/group file if a block is given. - * If no block is given, returns the enumerator. +/* call-seq: + * Etc::Group.each { |group| block } -> obj + * Etc::Group.each -> Enumerator + * + * Iterates for each entry in the /etc/group file if a block is given. + * + * If no block is given, returns the Enumerator. * - * The code block is passed an Struct::Group struct; see getpwent above for - * details. + * The code block is passed a Group struct. * * Example: * @@ -501,7 +538,7 @@ etc_each_group(VALUE obj) #endif /* Resets the process of reading the /etc/group file, so that the next call - * to getgrent will return the first entry again. + * to ::getgrent will return the first entry again. */ static VALUE etc_setgrent(VALUE obj) @@ -513,7 +550,7 @@ etc_setgrent(VALUE obj) } /* Ends the process of scanning through the /etc/group file begun by - * getgrent, and closes the file. + * ::getgrent, and closes the file. */ static VALUE etc_endgrent(VALUE obj) @@ -524,25 +561,15 @@ etc_endgrent(VALUE obj) 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: +/* Returns an entry from the /etc/group file. * - * - Group#name contains the name of the group as a String. + * 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. * - * - 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. + * To close the file when processing is complete, call ::endgrent. * - * - 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. + * Each entry is returned as a Group struct */ static VALUE etc_getgrent(VALUE obj) @@ -566,9 +593,11 @@ VALUE rb_w32_conv_from_wchar(const WCHAR *wstr, rb_encoding *enc); #endif /* - * Returns system configuration directory. This is typically "/etc", but - * is modified by the prefix used when Ruby was compiled. For example, - * if Ruby is built and installed in /usr/local, returns "/usr/local/etc". + * Returns system configuration directory. + * + * This is typically "/etc", but is modified by the prefix used when Ruby was + * compiled. For example, if Ruby is built and installed in /usr/local, returns + * "/usr/local/etc". */ static VALUE etc_sysconfdir(VALUE obj) @@ -608,7 +637,9 @@ etc_systmpdir(void) * temporary directory (/tmp) and configuration directory (/etc). * * The Etc module provides a more reliable way to access information about - * the logged in user than environment variables such as $USER. For example: + * the logged in user than environment variables such as +$USER+. + * + * == Example: * * require 'etc' * @@ -619,6 +650,9 @@ etc_systmpdir(void) * * Note that the methods provided by this module are not always secure. * It should be used for informational purposes, and not for security. + * + * All operations defined in this module are class methods, so that you can + * include the Etc module into your class. */ void Init_etc(void) @@ -669,6 +703,45 @@ Init_etc(void) "expire", #endif NULL); + /* Define-const: Passwd + * + * Passwd is a Struct that contains the following members: + * + * name:: + * contains the short login name of the user as a String. + * 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. + * uid:: + * contains the integer user ID (uid) of the user. + * gid:: + * contains the integer group ID (gid) of the user's primary group. + * dir:: + * contains the path to the home directory of the user as a String. + * shell:: + * contains the path to the login shell of the user as a String. + * + * === The following members below are optional, and must be compiled with special flags: + * + * 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. + * must be compiled with +HAVE_ST_PW_GECOS+ + * change:: + * password change time(integer) must be compiled with +HAVE_ST_PW_CHANGE+ + * quota:: + * quota value(integer) must be compiled with +HAVE_ST_PW_QUOTA+ + * age:: + * password age(integer) must be compiled with +HAVE_ST_PW_AGE+ + * class:: + * user access class(string) must be compiled with +HAVE_ST_PW_CLASS+ + * comment:: + * comment(string) must be compiled with +HAVE_ST_PW_COMMENT+ + * expire:: + * account expiration time(integer) must be compiled with +HAVE_ST_PW_EXPIRE+ + */ rb_define_const(mEtc, "Passwd", sPasswd); rb_extend_object(sPasswd, rb_mEnumerable); rb_define_singleton_method(sPasswd, "each", etc_each_passwd, 0); @@ -680,6 +753,27 @@ Init_etc(void) #endif "gid", "mem", NULL); + /* Define-const: Group + * + * Group is a Struct that is only available when compiled with +HAVE_GETGRENT+. + * + * The struct contains the following members: + * + * name:: + * contains the name of the group as a String. + * 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. + * + * Must be compiled with +HAVE_ST_GR_PASSWD+. + * gid:: + * contains the group's numeric ID as an integer. + * mem:: + * is an Array of Strings containing the short login names of the + * members of the group. + */ rb_define_const(mEtc, "Group", sGroup); rb_extend_object(sGroup, rb_mEnumerable); rb_define_singleton_method(sGroup, "each", etc_each_group, 0); |