.rn '' }` ''' \$RCSfile\$\$Revision\$\$Date\$ ''' ''' \$Log\$ ''' .de Sh .br .if t .Sp .ne 5 .PP \fB\\\$1\fR .PP .. .de Sp .if t .sp .5v .if n .sp .. .de Ip .br .ie \\n(.\$>=3 .ne \\\$3 .el .ne 3 .IP "\\\$1" \\\$2 .. .de Vb .ft CW .nf .ne \\\$1 .. .de Ve .ft R .fi .. ''' ''' ''' Set up \*(-- to give an unbreakable dash; ''' string Tr holds user defined translation string. ''' Bell System Logo is used as a dummy character. ''' .tr \(*W-|\(bv\*(Tr .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" "" ''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of ''' \*(L" and \*(R", except that they are used on ".xx" lines, ''' such as .IP and .SH, which do another additional levels of ''' double-quote interpretation .ds M" """ .ds S" """ .ds N" """"" .ds T" """"" .ds L' ' .ds R' ' .ds M' ' .ds S' ' .ds N' ' .ds T' ' 'br\} .el\{\ .ds -- \(em\| .tr \*(Tr .ds L" `` .ds R" '' .ds M" `` .ds S" '' .ds N" `` .ds T" '' .ds L' ` .ds R' ' .ds M' ` .ds S' ' .ds N' ` .ds T' ' .ds PI \(*p 'br\} .\" If the F register is turned on, we'll generate .\" index entries out stderr for the following things: .\" TH Title .\" SH Header .\" Sh Subsection .\" Ip Item .\" X<> Xref (embedded .\" Of course, you have to process the output yourself .\" in some meaninful fashion. .if \nF \{ .de IX .tm Index:\\\$1\t\\n%\t"\\\$2" .. .nr % 0 .rr F .\} .TH Net::servent 3 "perl 5.005, patch 02" "23/Jul/98" "Perl Programmers Reference Guide" .UC .if n .hy 0 .if n .na .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .de CQ \" put \$1 in typewriter font .ft CW 'if n "\c 'if t \\&\\\$1\c 'if n \\&\\\$1\c 'if n \&" \\&\\\$2 \\\$3 \\\$4 \\\$5 \\\$6 \\\$7 '.ft R .. .\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2 . \" AM - accent mark definitions .bd B 3 . \" 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 ? ? . ds ! ! . ds / . ds q .\} .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 ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10' . ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' . ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10' .\} . \" 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 v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#] .ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u' .ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u' .ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#] .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 .ds oe o\h'-(\w'o'u*4/10)'e .ds Oe O\h'-(\w'O'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 v \h'-1'\o'\(aa\(ga' . ds _ \h'-1'^ . ds . \h'-1'. . ds 3 3 . 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 . ds oe oe . ds Oe OE .\} .rm #[ #] #H #V #F C .SH "NAME" Net::servent \- by-name interface to Perl's built-in getserv*() functions .SH "SYNOPSIS" .PP .Vb 4 \& use Net::servent; \& \$s = getservbyname(shift || 'ftp') || die "no service"; \& printf "port for %s is %s, aliases are %s\en", \& \$s->name, \$s->port, "@{\$s->aliases}"; .Ve .Vb 3 \& use Net::servent qw(:FIELDS); \& getservbyname(shift || 'ftp') || die "no service"; \& print "port for \$s_name is \$s_port, aliases are @s_aliases\en"; .Ve .SH "DESCRIPTION" This module's default exports override the core \fIgetservent()\fR, \fIgetservbyname()\fR, and \fIgetnetbyport()\fR functions, replacing them with versions that return \*(L"Net::servent\*(R" objects. They take default second arguments of \*(L"tcp\*(R". This object has methods that return the similarly named structure field name from the C's servent structure from \fInetdb.h\fR; namely name, aliases, port, and proto. The aliases method returns an array reference, the rest scalars. .PP You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding \f(CWn_\fR. Thus, \f(CW\$serv_obj->name()\fR corresponds to \f(CW\$s_name\fR if you import the fields. Array references are available as regular array variables, so for example \f(CW@{ \$serv_obj->aliases() }\fR would be simply \f(CW@s_aliases\fR. .PP The \fIgetserv()\fR function is a simple front-end that forwards a numeric argument to \fIgetservbyport()\fR, and the rest to \fIgetservbyname()\fR. .PP To access this functionality without the core overrides, pass the \f(CWuse\fR an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the \f(CWCORE::\fR pseudo-package. .SH "EXAMPLES" .PP .Vb 1 \& use Net::servent qw(:FIELDS); .Ve .Vb 10 \& while (@ARGV) { \& my (\$service, \$proto) = ((split m!/!, shift), 'tcp'); \& my \$valet = getserv(\$service, \$proto); \& unless (\$valet) { \& warn "\$0: No service: \$service/\$proto\en" \& next; \& } \& printf "service \$service/\$proto is port %d\en", \$valet->port; \& print "alias are @s_aliases\en" if @s_aliases; \& } .Ve .SH "NOTE" While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. .SH "AUTHOR" Tom Christiansen .rn }` '' .IX Title "Net::servent 3" .IX Name "Net::servent - by-name interface to Perl's built-in getserv*() functions" .IX Header "NAME" .IX Header "SYNOPSIS" .IX Header "DESCRIPTION" .IX Header "EXAMPLES" .IX Header "NOTE" .IX Header "AUTHOR"