Annotation of src/usr.bin/doas/doas.conf.5, Revision 1.26
1.26 ! tedu 1: .\" $OpenBSD: doas.conf.5,v 1.25 2016/06/11 05:04:03 tedu Exp $
1.1 tedu 2: .\"
3: .\"Copyright (c) 2015 Ted Unangst <tedu@openbsd.org>
4: .\"
5: .\"Permission to use, copy, modify, and distribute this software for any
6: .\"purpose with or without fee is hereby granted, provided that the above
7: .\"copyright notice and this permission notice appear in all copies.
8: .\"
9: .\"THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: .\"WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: .\"MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: .\"ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: .\"WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: .\"ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: .\"OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.24 tedu 16: .Dd $Mdocdate: June 11 2016 $
1.1 tedu 17: .Dt DOAS.CONF 5
18: .Os
19: .Sh NAME
20: .Nm doas.conf
21: .Nd doas configuration file
1.17 tedu 22: .Sh SYNOPSIS
23: .Nm /etc/doas.conf
1.1 tedu 24: .Sh DESCRIPTION
25: The
26: .Xr doas 1
27: utility executes commands as other users according to the rules
1.18 jmc 28: in the
29: .Nm
1.1 tedu 30: configuration file.
31: .Pp
32: The rules have the following format:
1.3 schwarze 33: .Bd -ragged -offset indent
34: .Ic permit Ns | Ns Ic deny
35: .Op Ar options
1.4 bentley 36: .Ar identity
1.3 schwarze 37: .Op Ic as Ar target
1.9 jmc 38: .Op Ic cmd Ar command Op Ic args ...
1.1 tedu 39: .Ed
40: .Pp
41: Rules consist of the following parts:
1.3 schwarze 42: .Bl -tag -width 11n
43: .It Ic permit Ns | Ns Ic deny
1.1 tedu 44: The action to be taken if this rule matches.
1.3 schwarze 45: .It Ar options
1.1 tedu 46: Options are:
1.3 schwarze 47: .Bl -tag -width keepenv
48: .It Ic nopass
1.1 tedu 49: The user is not required to enter a password.
1.3 schwarze 50: .It Ic keepenv
1.1 tedu 51: The user's environment is maintained.
1.5 benno 52: The default is to reset the environment, except for the variables
53: .Ev DISPLAY ,
54: .Ev HOME ,
55: .Ev LOGNAME ,
56: .Ev MAIL ,
57: .Ev PATH ,
58: .Ev TERM ,
59: .Ev USER
60: and
61: .Ev USERNAME .
1.22 tedu 62: .It Ic keepenv { Oo Ar variable ... Oc Ic }
1.12 jmc 63: In addition to the variables mentioned above, keep the space-separated
64: specified variables.
1.1 tedu 65: .El
1.3 schwarze 66: .It Ar identity
1.1 tedu 67: The username to match.
1.12 jmc 68: Groups may be specified by prepending a colon
69: .Pq Sq \&: .
1.1 tedu 70: Numeric IDs are also accepted.
1.3 schwarze 71: .It Ic as Ar target
1.1 tedu 72: The target user the running user is allowed to run the command as.
1.13 tedu 73: The default is all users.
1.3 schwarze 74: .It Ic cmd Ar command
1.1 tedu 75: The command the user is allowed or denied to run.
76: The default is all commands.
1.23 tedu 77: Be advised that it is best to specify absolute paths.
1.25 tedu 78: If a relative path is specified, only a restricted
1.16 tedu 79: .Ev PATH
80: will be searched.
1.9 jmc 81: .It Ic args ...
1.8 zhuk 82: Arguments to command.
1.26 ! tedu 83: The command arguments provided by the user need to match those specified.
1.25 tedu 84: The keyword
1.8 zhuk 85: .Ic args
1.25 tedu 86: alone means that command must be run without any arguments.
1.1 tedu 87: .El
88: .Pp
89: The last matching rule determines the action taken.
1.24 tedu 90: If no rule matches, the action is denied.
1.5 benno 91: .Pp
92: Comments can be put anywhere in the file using a hash mark
93: .Pq Sq # ,
94: and extend to the end of the current line.
1.10 zhuk 95: .Pp
96: The following quoting rules apply:
97: .Bl -dash
98: .It
99: The text between a pair of double quotes
100: .Pq Sq \&"
101: is taken as is.
102: .It
1.11 jmc 103: The backslash character
1.10 zhuk 104: .Pq Sq \e
1.11 jmc 105: escapes the next character, including new line characters, outside comments;
1.10 zhuk 106: as a result, comments may not be extended over multiple lines.
107: .It
1.11 jmc 108: If quotes or backslashes are used in a word,
1.23 tedu 109: it is not considered a keyword.
1.10 zhuk 110: .El
1.1 tedu 111: .Sh EXAMPLES
1.5 benno 112: The following example permits users in group wsrc to build ports,
1.14 zhuk 113: wheel to execute commands as any user while keeping the environment
1.5 benno 114: variables
115: .Ev ENV ,
116: .Ev PS1 ,
117: and
118: .Ev SSH_AUTH_SOCK ,
1.15 reyk 119: permits tedu to run procmap as root without a password,
120: and additionally permits root to run unrestricted commands as itself.
1.1 tedu 121: .Bd -literal -offset indent
1.6 jmc 122: # Non-exhaustive list of variables needed to
1.5 benno 123: # build release(8) and ports(7)
124: permit nopass keepenv { \e
125: FTPMODE PKG_CACHE PKG_PATH SM_PATH SSH_AUTH_SOCK \e
126: DESTDIR DISTDIR FETCH_CMD FLAVOR GROUP MAKE MAKECONF \e
127: MULTI_PACKAGES NOMAN OKAY_FILES OWNER PKG_DBDIR \e
128: PKG_DESTDIR PKG_TMPDIR PORTSDIR RELEASEDIR SHARED_ONLY \e
129: SUBPACKAGE WRKOBJDIR SUDO_PORT_V1 } :wsrc
1.22 tedu 130: permit nopass keepenv { ENV PS1 SSH_AUTH_SOCK } :wheel
1.14 zhuk 131: permit nopass tedu as root cmd /usr/sbin/procmap
1.15 reyk 132: permit nopass keepenv root as root
1.1 tedu 133: .Ed
1.3 schwarze 134: .Sh SEE ALSO
135: .Xr doas 1
136: .Sh HISTORY
137: The
138: .Nm
139: configuration file first appeared in
140: .Ox 5.8 .
141: .Sh AUTHORS
142: .An Ted Unangst Aq Mt tedu@openbsd.org
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