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Revision 1.2 - (hide annotations) (download)
Sat Sep 13 08:57:55 2003 UTC (21 years, 1 month ago) by wakaba
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +7 -5 lines
Some markup fixes to be valid

1 wakaba 1.1 <?xml version="1.0" encoding="iso-2022-jp"?>
2     <!DOCTYPE rfc SYSTEM "rfc2629.dtd" [
3     <!ENTITY rfc.number "1873">
4     <!ENTITY ja.access "$B@\B3(B">
5     <!ENTITY ja.object "$BJ*BN(B">
6     <!ENTITY ja.optional "$B>JN,2DG=(B">
7     <!ENTITY ja.security "$B0BA4@-(B">
8     <!ENTITY ja.system "$B=hM}7O(B">
9     <!ENTITY ja.text "$B%F%-%9%H(B">
10     <!ENTITY ja.user-agent "$BMxMQ<TBeM}<T(B">
11     <!ENTITY ja.mail.body "$BK\J8(B">
12     <!ENTITY ja.mail.header "$BF,(B">
13     <!ENTITY ja.mime.body-part "$BK\J8ItJ,(B">
14     <!ENTITY ja.mime.entity "$B<BBN(B">
15     <!ENTITY ja.mime.multipart "$BB?ItJ,(B">
16     <!ENTITY ja.mime.part "$BItJ,(B">
17     <!ENTITY ja.mime.parameter "$B%Q%i%a!<%?!<(B">
18     ]>
19     <?rfc symrefs="yes"?>
20     <rfc number="&rfc.number;" category="exp"
21     xmlns:myns="mailto:julian.reschke@greenbytes.de?subject=rcf2629.xslt"
22     xmlns:ja="http://suika.fam.cx/~wakaba/lang/rfc/translation/"
23     xmlns:h="http://www.w3.org/1999/xhtml">
24     <front>
25     <title>Message/External-Body Content-ID Access Type</title>
26     <ja:title xml:lang="ja">Message/External-Body Content-ID &ja.access;$B7?(B</ja:title>
27     <author initials="E." surname="Levinson" fullname="Edward Levinson">
28     <organization>Accurate Information Systems, Inc.</organization>
29     <address>
30     <postal>
31     <street>2 Industrial Way</street>
32     <city>Eatontown</city> <region>NJ</region>
33     <code>07724-2265</code>
34     <country ja:text="USA">US</country>
35     </postal>
36     <phone>+1 908 389 5550</phone>
37     <email>ELevinson@Accurate.com</email>
38     </address>
39     </author>
40     <author initials="J." surname="Clark" fullname="James Clark">
41     <address>
42     <postal>
43     <street>90 Clarendon Road</street>
44     <city>London W11 2HR</city>
45     <country ja:text="UK">GB</country>
46     </postal>
47     <email>jjc@jclark.com</email>
48     </address>
49     </author>
50     <date month="December" year="1995" />
51     <abstract>
52     <t>
53     <ja:pair>
54     <ja:l xml:lang="en">
55     When using MIME <xref target="MIME" /> to encapsulate a
56     structured object that
57     consist of many elements, for example an SGML <xref target="SGML" />
58     document, a
59     single element may occur several times. An encapsulation normally
60     maps each of the structured objects elements to a MIME entity. It is
61     useful to include elements that occur multiple time exactly once. To
62     accomplish that and to preserve the object structure it is desirable
63     to unambiguously refer to another body part of the same message.
64     </ja:l>
65     <ja:l xml:lang="ja">
66     MIME <xref target="MIME" /> $B$r;H$C$FB?$/$NMWAG$G9=@.$5$l$k9=B$2=(B&ja.object;,
67     $BNc$($P(B SGML <xref target="SGML" />
68     $BJ8=q$r%+%W%;%k2=$9$k;~!"0l$D$NMWAG$,4vEY$b=P8=$9$k$+$b$7$l$^$;$s!#%+%W%;%k2=$ODL>o3F9=B$2=(B&ja.object;$BMWAG$H(B
69     MIME $B<BBN$rBP1~$5$;$^$9!#J#?t2s8=$l$kMWAG$r0l$D$@$14^$a$k$3$H$,=PMh$l$PJXMx$G$9!#$3$l$rC#@.$7$+$D(B&ja.object;$B9=B$$rJ]$D$?$a!"F1$8%a%C%;!<%8$NB>$N(B&ja.mime.body-part;$B$r[#KfL5$/;2>H=PMh$k$N$,K>$^$7$$$G$7$g$&!#(B
70     </ja:l>
71     </ja:pair>
72     </t>
73     <t>
74     <ja:pair>
75     <ja:l xml:lang="en">
76     The existing MIME Content-Type Message/External-Body access-types
77     allow a MIME entity (body-part) to refer to an object that is not in
78     the message by specifying how to access that object. The Content-ID
79     access method described in this document provides the capability to
80     refer to an object within the message.
81     </ja:l>
82     <ja:l xml:lang="ja">
83     $B4{B8$N(B MIME Content-Type Message/External-Body access-type
84     $B$G$O(B MIME &ja.mime.entity; (&ja.mime.body-part;)
85     $B$,!"%a%C%;!<%8Cf$KL5$$(B&ja.object;$B$r!";XDj$7$?(B&ja.object;$B$X$N(B&ja.access;$BJ}K!$G;2>H$9$k$3$H$,=PMh$^$7$?!#$3$NJ8=q$G@bL@$9$k(B
86     Content-ID &ja.access;$BJ}K!$O!"%a%C%;!<%8Cf$N(B&ja.object;$B$r;2>H$9$kJ}K!$rDs6!$7$^$9!#(B
87     </ja:l>
88     </ja:pair>
89     </t>
90     </abstract>
91     </front>
92     <ja:front>
93     <author fullname="$B$o$+$P(B" ja:id="wakaba">
94     <address>
95     <email>w@suika.fam.cx</email>
96     <uri>http://suika.fam.cx/~wakaba/</uri>
97     </address>
98     </author>
99     <ja:change>
100     <ja:item year="2002" month="05" day="20"><author ja:ref="wakaba" />
101     <t>$BF|K\8l$KK]Lu!#(B</t>
102     </ja:item>
103     <ja:item year="2002" month="07" day="26"><author ja:ref="wakaba" />
104     <t><ja:link type="rfc" number="2629" /> $B$G%^!<%/IU$1!#(B</t>
105     </ja:item>
106 wakaba 1.2 </ja:change><!-- $Date: 2002/07/26 11:56:16 $ -->
107 wakaba 1.1 </ja:front>
108     <middle>
109    
110     <section title="Introduction">
111     <t>
112     <ja:pair>
113     <ja:l xml:lang="en">
114     Consider a MIME multipart entity several of whose body parts contain
115     the same data (body) but different parameters or Content-* headers.
116     Representing those body parts without duplicating the data in each
117     one promotes efficient use of resources (bandwidth and storage
118     space). To achieve these benefits an access-type is defined that
119     permits one message part to refer to another one in the same message.
120     </ja:l>
121     <ja:l xml:lang="ja">
122     MIME &ja.mime.multipart;&ja.mime.entity;$B$G!"$=$N(B&ja.mime.body-part;$B$N4v$D$+$OF1$8%G!<%?(B
123     (&ja.mail.body;) $B$G$"$k$,!"%Q%i%a!<%?!<$d(B
124     Content-* &ja.mail.header;$B$,0c$C$F$$$k>l9g$r9M$($F$_$F2<$5$$!#$3$l$i$N(B&ja.mime.body-part;$B$r!"%G!<%?$rFs=E$K$;$:$K$=$l$>$l0l2s$:$DI=8=$9$k$3$H$G!";q8;(B
125     ($BBS0h$dJ]4I6u4V(B) $B$rG=N(E*$K;H$&$3$H$rB%?J=PMh$^$9!#$=$3$G!"(B
126     $B$"$k%a%C%;!<%8(B&ja.mime.part;$B$,F1$8%a%C%;!<%8Cf$NB>$N(B&ja.mime.part;$B$r;2>H=PMh$k(B
127     access-type $B$rDj5A$7$^$9!#(B
128     </ja:l>
129     </ja:pair>
130     </t>
131     </section>
132    
133     <section title="The Content-ID Access Type" ja:title-ja="Content-ID &ja.access;$B7?(B">
134    
135     <section title="Registration Information" ja:title-ja="$BEPO?>pJs(B">
136 wakaba 1.2 <t>
137 wakaba 1.1 <list style="hanging">
138     <t hangText="MIME access-type name" ja:hangText-ja="MIME access-type $BL>(B">content-id</t>
139    
140     <t hangText="Required parameters" ja:hangText-ja="$BI,?\(B&ja.mime.parameter;"><ja:pair>
141     <ja:l xml:lang="en">none</ja:l>
142     <ja:l xml:lang="ja">$B$J$7(B</ja:l>
143     </ja:pair></t>
144    
145     <t hangText="Optional parameters" ja:hangText-ja="&ja.optional;&ja.mime.parameter;"><ja:pair>
146     <ja:l xml:lang="en">none</ja:l>
147     <ja:l xml:lang="ja">$B$J$7(B</ja:l>
148     </ja:pair></t>
149    
150     <t hangText="Published specification" ja:hangText-ja="$B=PHG$5$l$?;EMM=q(B"><ja:pair>
151     <ja:l xml:lang="en">this document</ja:l>
152     <ja:l xml:lang="ja">$B$3$NJ8=q(B</ja:l>
153     </ja:pair></t>
154    
155     <t hangText="Person &amp; email address to contact for further information" ja:hangText-ja="$B>\$7$$>pJs$NO"Mm@h$N?M$HEE;R%a%$%k!&%"%I%l%9(B">
156     Ed Levinson <ja:mail>ELevinson@accurate.com</ja:mail>
157     </t>
158    
159     <t hangText="Additional requirements" ja:hangText-ja="$BDI2C$NMW7o(B">
160    
161     <t>
162     <ja:pair>
163     <ja:l xml:lang="en">
164     The content-id header of the access-type=content-id MIME
165     entity must match (be identical to) exactly one content-id
166     in the same message, excluding other access-type=content-id
167     entities. Thus, the content-id access type can only occur
168     within a multipart message and can refer to another body
169     part anywhere in the same message.
170     </ja:l>
171     <ja:l xml:lang="ja">
172     <h:code>access-type=content-id</h:code> MIME
173     &ja.mime.entity;$B$N(B content-id &ja.mail.header;$B$O!"B>$N(B
174     <h:code>access-type=content-id</h:code>
175     $B$N(B&ja.mime.entity;$B$r=|$$$F!"F1$8%a%C%;!<%8Cf$NCzEY0l$D$N(B
176     content-id $B$H$N$_0lCW$9$k(B ($BF10l$G$"$k(B)
177     $B$b$N$G$J$1$l$P$J$j$^$;$s!#$G$9$+$i!"(B
178     content-id &ja.access;$B7?$O(B&ja.mime.multipart;$B%a%C%;!<%8Cf$G$N$_;H$&$3$H$,=PMh$^$9$7!"F1$8%a%C%;!<%8Cf$N$I$3$K$"$kB>$N(B&ja.mime.body-part;$B$r$b;2>H$9$k$3$H$,=PMh$^$9!#(B
179     </ja:l>
180     </ja:pair>
181     </t>
182    
183     <t>
184     <ja:pair>
185     <ja:l xml:lang="en">
186     A MIME User Agent (MUA) constructs the resultant MIME
187     body part as described below. We call the
188     access-type=content-id MIME entity the referring body
189     part and the MIME body part to which it refers,
190     the one with the matching content-id, the referenced
191     body part. The MIME entity that results from
192     content-id access type consists of:
193     </ja:l>
194     <ja:l xml:lang="ja">
195     MIME &ja.user-agent; (<h:abbr xml:lang="en">MUA</h:abbr>)
196     $B$O7k2L$H$7$F@8$8$k(B MIME
197     &ja.mime.body-part;$B$r<!$K@bL@$9$k$h$&$K$7$F9=C[$7$^$9!#$3$3$G!"(B
198     <ja:definition word="referring body part" translation="$B;2>H$9$k(B&ja.mime.body-part;"><h:code>access-type=content-id</h:code>
199     $B$N(B MIME
200     &ja.mime.entity;</ja:definition>$B$r;2>H$9$k(B&ja.mime.body-part;$B$H(B,
201     <ja:definition word="referenced body part" translation="$B;2>H$5$l$k(B&ja.mime.body-part;">$B;2>H$9$k(B&ja.mime.body-part;$B$,;2>H$9$k(B MIME &ja.mime.body-part;,
202     $B$D$^$j0lCW$9$k(B content-id
203     $B$r;}$D$b$N(B</ja:definition>$B$r;2>H$5$l$k(B&ja.mime.body-part;$B$H8F$S$^$9!#(B
204     content-id &ja.access;$B7?$N7k2L$N(B MIME
205     &ja.mime.entity;$B$O<!$N$b$N$+$i9=@.$5$l$^$9!#(B
206     </ja:l>
207     </ja:pair>
208    
209     <list style="hanging">
210     <t hangText="(a)"><ja:pair>
211     <ja:l xml:lang="en">
212     the referenced body part's content-type header,
213     </ja:l>
214     <ja:l xml:lang="ja">
215     <ja:word name="referenced body part" />$B$N(B content-type
216     &ja.mail.header;
217     </ja:l>
218     </ja:pair></t>
219     <t hangText="(b)"><ja:pair>
220     <ja:l xml:lang="en">
221     the referring body part's headers except its
222     content-type header,
223     </ja:l>
224     <ja:l xml:lang="ja">
225     <ja:word name="referring body part" />$B$N(B content-type
226     &ja.mail.header;$B0J30$N(B&ja.mail.header;
227     </ja:l>
228     </ja:pair></t>
229     <t hangText="(c)"><ja:pair>
230     <ja:l xml:lang="en">
231     any headers in the referenced body part not in the
232     referring one,
233     </ja:l>
234     <ja:l xml:lang="ja">
235     <ja:word name="referenced body part" />$B$N!"(B<ja:word name="referring body part">$B;2>H$9$kJ}(B</ja:word>$B$K$J$$(B&ja.mail.header;
236     </ja:l>
237     </ja:pair></t>
238     <t hangText="(d)"><ja:pair>
239     <ja:l xml:lang="en">
240     the line separating the headers from the body, and
241     </ja:l>
242     <ja:l xml:lang="ja">
243     &ja.mail.header;$B$H(B&ja.mail.body;$B$r6h@Z$k9T(B
244     </ja:l>
245     </ja:pair></t>
246     <t hangText="(e)"><ja:pair>
247     <ja:l xml:lang="en">
248     the referenced body part's body.
249     </ja:l>
250     <ja:l xml:lang="ja">
251     <ja:word name="referenced body part" />$B$N(B&ja.mail.body;
252     </ja:l>
253     </ja:pair></t>
254     </list><!-- hanging -->
255 wakaba 1.2 </t>
256 wakaba 1.1 </t><!-- additional requirements -->
257     </list><!-- submit form -->
258 wakaba 1.2 </t>
259 wakaba 1.1 </section><!-- 2.1 -->
260    
261     <section title="Example Usage" ja:title-ja="$B;HMQNc(B">
262     <figure>
263     <preamble>
264     <ja:pair>
265     <ja:l xml:lang="en">
266     The following example shows a message that consists of two identical images.
267     </ja:l>
268     <ja:l xml:lang="ja">
269     $B<!$NNc$O!"(B2$B$D$NF1$82hA|$+$i9=@.$5$l$k%a%C%;!<%8$G$9!#(B
270     </ja:l>
271     </ja:pair>
272     </preamble>
273    
274     <ja:pair>
275     <ja:l xml:lang="en">
276    
277    
278     <artwork xml:space="preserve"><![CDATA[ MIME-Version: 1.0
279     Content-Type: Multipart/Mixed;
280     boundary=tiger-lily
281    
282     --tiger-lily
283     Content-Type: image/jpeg
284     Content-ID: <950323.1552@XIson.com>
285    
286     AAAcdb...
287     --tiger-lily
288     Content-type: Message/External-Body;
289     access-type=content-id
290     Content-ID: <950323.1552@XIson.com>
291     Content-Description:
292     This body part is duplicated by reference
293    
294     --tiger-lily--
295     ]]></artwork>
296     </ja:l>
297     <ja:l xml:lang="ja">
298     <artwork xml:space="preserve"><![CDATA[ MIME-Version: 1.0
299     Content-Type: Multipart/Mixed;
300     boundary=tiger-lily
301    
302     --tiger-lily
303     Content-Type: image/jpeg
304     Content-ID: <950323.1552@XIson.com>
305    
306     AAAcdb...
307     --tiger-lily
308     Content-type: Message/External-Body;
309     access-type=content-id
310     Content-ID: <950323.1552@XIson.com>
311     Content-Description:
312     $B$3$N(B&ja.mime.body-part;$B$O;2>H$GJ#@=$5$l$^$9!#(B
313    
314     --tiger-lily--
315     ]]></artwork>
316     </ja:l>
317     </ja:pair>
318     </figure>
319    
320     <figure>
321     <preamble>
322     <ja:pair>
323     <ja:l xml:lang="en">
324     The equivalent MIME entity for the second body part is:
325     </ja:l>
326     <ja:l xml:lang="ja">
327     2$B$D$a$N(B&ja.mime.body-part;$B$HF1Ey$N(B
328     MIME &ja.mime.entity;$B$r<!$K5s$2$^$9!#(B
329     </ja:l>
330     </ja:pair>
331     </preamble>
332    
333     <ja:pair>
334     <ja:l xml:lang="en">
335     <artwork xml:space="preserve"><![CDATA[ --tiger-lily
336     Content-Type: image/jpeg
337     Content-ID: <950323.1552@XIson.com>
338     Content-Description:
339 wakaba 1.2 $B$3$N(B]]>&ja.mime.body-part;<![CDATA[$B$O;2>H$GJ#@=$5$l$^$9!#(B
340 wakaba 1.1
341     AAAcdb...
342     --tiger-lily]]></artwork>
343     </ja:l>
344     <ja:l xml:lang="ja">
345     <artwork xml:space="preserve"><![CDATA[ --tiger-lily
346     Content-Type: image/jpeg
347     Content-ID: <950323.1552@XIson.com>
348     Content-Description:
349     This body part is duplicated by reference
350    
351     AAAcdb...
352     --tiger-lily]]></artwork>
353     </ja:l>
354     </ja:pair>
355     </figure>
356     </section><!-- 2.2 -->
357     </section><!-- 2 -->
358    
359     <section title="Security Considerations">
360     <t>
361     <ja:pair>
362     <ja:l xml:lang="en">
363     The content-id access-type does not impact the security of messages
364     or systems. The referenced MIME entity may have security
365     implications.
366     </ja:l>
367     <ja:l xml:lang="ja">
368     content-id access-type $B$O%a%C%;!<%8$d(B&ja.system;$B$N(B&ja.security;$B$K>W7b$rM?$($^$;$s!#(B<ja:word name="referenced body part">$B;2>H$5$l$?(B
369     MIME &ja.mime.entity;</ja:word>$B$O(B&ja.security;$B$K4X78$9$k$+$b$7$l$^$;$s!#(B
370     </ja:l>
371     </ja:pair>
372     </t>
373     </section>
374    
375     <ja:insert section="references" ja:title-prefix="4. " />
376     <ja:insert section="author-address" ja:title-prefix="5. " />
377     </middle>
378    
379     <back>
380    
381     <references>
382     <reference anchor="RFC822">
383     <front>
384     <title>Standard for the format of ARPA Internet text messages</title>
385     <ja:title xml:lang="ja">ARPA Internet
386     &ja.text;$B%a%C%;!<%8$N=q<0$NI8=`(B</ja:title>
387     <author initials="D." surname="Crocker" fullname="David H. Crocker">
388     <organization abbrev="UDEL">University of Delaware,
389     Dept. of Electrical Engineering</organization>
390     </author>
391     <date month="August" year="1982" />
392     </front>
393     <seriesInfo name="STD" value="11" />
394     <seriesInfo name="RFC" value="822" />
395     </reference>
396    
397     <reference anchor="SGML">
398     <front>
399     <title>Information processing $B!=!=(B Text and office systems
400     $B!=!=(B Standard Generalized Markup Language (SGML)</title>
401     <ja:title xml:lang="ja">$B>pJs=hM}!=!=(B&ja.text;$B5Z$S;vL3=j7OE}!=!=I8=`HFMQ%^!<%/IU$18@8l(B (SGML)</ja:title>
402     </front>
403     <seriesInfo name="ISO" value="8879:1988" />
404     <ja:add-info>
405     <ja:note>$BF|K\9)6H5,3J$G$O!"(B JIS X 4151
406     $B!XJ8=q5-=R8@8l(BSGML$B!Y$,BP1~$7$^$9!#(B
407     ($B;29M(B:
408     <eref target="http://www1.u-netsurf.ne.jp/~7l1rll/SGMLindex.html">JIS X 4151-1992 (ISO 8859:1986 $B$KBP1~(B)</eref>)</ja:note>
409     </ja:add-info>
410     </reference>
411    
412     <reference anchor="MIME">
413     <front>
414     <title>MIME (Multipurpose Internet Mail Extensions)
415     Part One: Mechanisms for Specifying and Describing the Format
416     of Internet Message Bodies</title>
417     <ja:title xml:lang="ja">MIME ($BB?L\E*(B Internet $B%a%$%k3HD%(B)
418     $BBh(B1$BIt(B: Internet $B%a%C%;!<%8K\J8$N=q<0$N;XDj@bL@5!9=(B</ja:title>
419     <author initials="N." surname="Borenstein" fullname="Nathaniel S. Borenstein">
420     <organization>Bellcore</organization>
421     </author>
422     <author initials="N." surname="Freed" fullname="Ned Freed">
423     <organization abbrev="Innosoft">Innosoft International,
424     Inc.</organization>
425     </author>
426 wakaba 1.2 <date month="September" year="1993" />
427 wakaba 1.1 </front>
428     <seriesInfo name="RFC" value="1521" />
429     </reference>
430     </references>
431     </back>
432     <ja:back xml:lang="ja">
433     <section title="Content-ID $B$N;XDj(B">
434     <t>MIME <xref target="MIME" /> $B$N5,Dj$H>H$i$79g$o$;$k$H!"(B
435     <eref target="http://suika.fam.cx/~wakaba/-temp/wiki/wiki?message%2Fexternal%2Dbody%C7%DE%C2%CE%B7%BF">$B$I$3$K(B
436 wakaba 1.2 <h:code>Content-ID:</h:code> $BMs$r=q$/$N$+$K$D$$$F5?Ld$,$"$j$^$9(B</eref>$B!#(B</t>
437 wakaba 1.1 </section>
438     <section title="IANA $B$K4X$7$F(B">
439     <t><eref target="http://www.iana.org/assignments/access-types">IANA
440     $BEPO?Jm(B</eref>$B$K$O!"(B access-type "Content-ID" $B$OEPO?$5$l$F$$$^$;$s!#(B
441     (2002$BG/(B7$B7n8=:_(B)</t>
442     </section>
443     </ja:back>
444     </rfc>

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