diff options
author | William Joye <wjoye@cfa.harvard.edu> | 2017-10-26 16:45:12 (GMT) |
---|---|---|
committer | William Joye <wjoye@cfa.harvard.edu> | 2017-10-26 16:45:12 (GMT) |
commit | 6054f36bb658916bd231b9002efb94444e2871c8 (patch) | |
tree | a815500ec9bf0e100f4075a825213605c382def0 /man/mann/xpaacl.n | |
download | blt-6054f36bb658916bd231b9002efb94444e2871c8.zip blt-6054f36bb658916bd231b9002efb94444e2871c8.tar.gz blt-6054f36bb658916bd231b9002efb94444e2871c8.tar.bz2 |
Squashed 'xpa/' content from commit d6a54301
git-subtree-dir: xpa
git-subtree-split: d6a543018b46c5a6c47b5ff91e0e131549595ca6
Diffstat (limited to 'man/mann/xpaacl.n')
-rw-r--r-- | man/mann/xpaacl.n | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/man/mann/xpaacl.n b/man/mann/xpaacl.n new file mode 100644 index 0000000..d339c5d --- /dev/null +++ b/man/mann/xpaacl.n @@ -0,0 +1,251 @@ +.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.13) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. Capital omega is used to do unbreakable dashes and +.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, +.\" nothing in troff, for use with C<>. +.tr \(*W- +.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.ie n \{\ +. ds -- \(*W- +. ds PI pi +. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch +. ds L" "" +. ds R" "" +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds -- \|\(em\| +. ds PI \(*p +. ds L" `` +. ds R" '' +'br\} +.\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" +.\" If the F register is turned on, we'll generate index entries on stderr for +.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index +.\" entries marked with X<> in POD. Of course, you'll have to process the +.\" output yourself in some meaningful fashion. +.ie \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. nr % 0 +. rr F +.\} +.el \{\ +. de IX +.. +.\} +.\" +.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). +.\" Fear. Run. Save yourself. No user-serviceable parts. +. \" fudge factors for nroff and troff +.if n \{\ +. ds #H 0 +. ds #V .8m +. ds #F .3m +. ds #[ \f1 +. ds #] \fP +.\} +.if t \{\ +. ds #H ((1u-(\\\\n(.fu%2u))*.13m) +. ds #V .6m +. ds #F 0 +. ds #[ \& +. ds #] \& +.\} +. \" simple accents for nroff and troff +.if n \{\ +. ds ' \& +. ds ` \& +. ds ^ \& +. ds , \& +. ds ~ ~ +. ds / +.\} +.if t \{\ +. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" +. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' +. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' +. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' +. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' +. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' +.\} +. \" troff and (daisy-wheel) nroff accents +.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' +.ds 8 \h'\*(#H'\(*b\h'-\*(#H' +.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] +.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' +.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' +.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] +.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] +.ds ae a\h'-(\w'a'u*4/10)'e +.ds Ae A\h'-(\w'A'u*4/10)'E +. \" corrections for vroff +.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' +.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' +. \" for low resolution devices (crt and lpr) +.if \n(.H>23 .if \n(.V>19 \ +\{\ +. ds : e +. ds 8 ss +. ds o a +. ds d- d\h'-1'\(ga +. ds D- D\h'-1'\(hy +. ds th \o'bp' +. ds Th \o'LP' +. ds ae ae +. ds Ae AE +.\} +.rm #[ #] #H #V #F C +.\" ======================================================================== +.\" +.IX Title "xpaacl n" +.TH xpaacl n "July 23, 2013" "version 2.1.15" "SAORD Documentation" +.\" For nroff, turn off justification. Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +\&\fBXPAAcl: Access Control for \s-1XPA\s0 Messaging\fR +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +\&\s-1XPA\s0 supports host-based access control for each \s-1XPA\s0 access point. You +can enable/disable access control using the \s-1XPA_ACL\s0 environment +variable. You can specify access to specific \s-1XPA\s0 access points for +specific machines using the \s-1XPA_DEFACL\s0 and \s-1XPA_ACLFILE\s0 environment +variables. By default, an \s-1XPA\s0 access point is accessible only to +processes running on the same machine (same as X Windows). +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +When \s-1INET\s0 sockets are in use (the default, as specified by the +\&\fI\s-1XPA_METHOD\s0\fR environment variable), \s-1XPA\s0 supports a host-based +access control mechanism for individual access points. This mean that +access can be specified for get, set, or info operations for each +access point on a machine by machine basis. For \s-1LOCAL\s0 sockets, access +is restricted (by definition) to the host machine. +.PP +\&\s-1XPA\s0 access control is enabled by default, but can be turned off by +setting the \fI\s-1XPA_ACL\s0\fR environment variable to \fIfalse\fR. +In this case, any process can access any \s-1XPA\s0 server. +.PP +Assuming that access control is turned on, the \s-1ACL\s0 for an individual +\&\s-1XPA\s0 access point is set up when that access point is registered +(although it can be changed later on; see below). This can be done in +one of two ways: +.PP +Firstly, the \fI\s-1XPA_ACLFILE\s0\fR environment variable can defined to +point to a file of access controls for individual access points. The format +of this file is: +.PP +.Vb 1 +\& class:name ip acl +.Ve +.PP +The first argument is a template that specifies the class:name of the +access point covered by this \s-1ACL\s0. See +\&\s-1XPA\s0 Access Points and Templates +for more information about xpa templates. +.PP +The second argument is the \s-1IP\s0 address (in human-readable format) of +the machine which is being given access. This argument can be +\&\fI*\fR to match all \s-1IP\s0 addresses. It also can be \fI\f(CI$host\fI\fR +to match the \s-1IP\s0 address of the current host. +.PP +The third argument is a string combination of \fIs\fR, \fIg\fR, +or \fIi\fR to allow \fIxpaset\fR, \fIxpaget\fR, or +\&\fIxpainfo\fR access respectively. The \s-1ACL\s0 argument can be +\&\fI+\fR to give \fIsgi\fR access or it can be \fI\-\fR to turn +off all access. +.PP +For example, +.PP +.Vb 3 +\& *:xpa1 somehost sg +\& *:xpa1 myhost + +\& * * g +.Ve +.PP +will allow processes on the machine somehost to make xpaget and xpaset calls, +allow processes on myhost to make any call, and allow all other hosts to +make xpaget (but not xpaset) calls. +.PP +Secondly, if the \fI\s-1XPA_ACLFILE\s0\fR does not exist, then a single +default value for all access points can be specified using the +\&\fI\s-1XPA_DEFACL\s0\fR environment variable. The default value for this +variable is: +.PP +.Vb 1 +\& #define XPA_DEFACL "*:* $host +" +.Ve +.PP +meaning that all access points are fully accessible to all processes +on the current host. Thus, in the absence of any \s-1ACL\s0 environment variables, +processes on the current host have full access to all access points +created on that host. This parallels the X11 xhost mechanism. +.PP +Access to an individual \s-1XPA\s0 access point can be changed using the \-acl +parameter for that access point. For example: +.PP +.Vb 1 +\& xpaset \-p xpa1 \-acl "somehost \-" +.Ve +.PP +will turn off all access control for somehost to the xpa1 access point, while: +.PP +.Vb 1 +\& xpaset \-p XPA:xpa1 \-acl "beberly gs" +.Ve +.PP +will give beberly xpaget and xpaset access to the access point whose +class is \s-1XPA\s0 and whose name is xpa1. +.PP +Similarly, the current \s-1ACL\s0 for a given access point can be retrieved using: +.PP +.Vb 1 +\& xpaget xpa1 \-acl +.Ve +.PP +Of course, you must have xpaget access to this \s-1XPA\s0 access point to +retrieve its \s-1ACL\s0. +.PP +Note that the \s-1XPA\s0 access points registered in the \fIxpans\fR +program also behave according to the \s-1ACL\s0 rules. That is, you cannot +use xpaget to view the access points registered with xpans unless +you have the proper \s-1ACL\s0. +.PP +Note also when a client request is made to an \s-1XPA\s0 server, the access +control is checked when the initial connection is established. This +access in effect at this time remains in effect so long as the client +connection is maintained, regardless of whether the access fro that +\&\s-1XPA\s0 is changed later on. +.PP +We recognize that host-based access control is only relatively secure +and will consider more stringent security (e.g., private key) in the +future if the community requires such support. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +See xpa(n) for a list of \s-1XPA\s0 help pages |