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| ID | Category | Severity | Type | Date Submitted | Last Update | ||
| 0001573 | [1003.1(2016/18)/Issue7+TC2] System Interfaces | Editorial | Clarification Requested | 2022-03-19 00:18 | 2022-05-23 11:37 | ||
| Reporter | steffen | View Status | public | ||||
| Assigned To | |||||||
| Priority | normal | Resolution | Accepted As Marked | ||||
| Status | Applied | ||||||
| Name | steffen | ||||||
| Organization | |||||||
| User Reference | |||||||
| Section | inet_pton | ||||||
| Page Number | 1139 | ||||||
| Line Number | 38475 ff. | ||||||
| Interp Status | --- | ||||||
| Final Accepted Text | Note: 0005814 | ||||||
| Summary | 0001573: inet_pton: clarify IPv4 "standard IPv4 dotted-decimal form" | ||||||
| Description |
POSIX says If the af argument of inet_pton( ) is AF_INET, the src string shall be in the standard IPv4 dotted-decimal form: ddd.ddd.ddd.ddd where "ddd" is a one to three digit decimal number between 0 and 255 (see inet_addr( )). The inet_pton( ) function does not accept other formats (such as the octal numbers, hexadecimal numbers, and fewer than four numbers that inet_addr( ) accepts). Whereas it explicitly states "octal" here, text forms exist which always use "ddd.ddd.ddd.ddd", zero padded: the source of the strings may be end-users used to such forms. The standard does allow "Leading zeros in individual fields can be omitted" for IPv6, resulting in two different grades of fault tolerance for the different IP address types. (Not to mention that RFCs exist which update IPv6 notation to be absolutely non-forgiving regarding compression, leading zeroes, and even character case! (But it seems not all parts of IETF actually do follow it, as the older, much more forgiving initial IPv6 RFC allows all sorts of textual representation, and i for one had a converter which flag-driven almost supports them all (personally in favour of uppercase).)) As it stands a tolerant software is better off polishing user data before calling inet_pton. It would be nice if the standard would not only require decimal, but allow leading zeroes in IPv4 address fields. |
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| Desired Action |
On line 38479, remove "the octal numbers, ". On line 38480, insert before the closing parenthesis "Leading zeroes shall be allowed". |
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| Tags | tc3-2008 | ||||||
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(0005814) geoffclare (manager) 2022-04-21 16:20 |
On line 38478-38480, change:The inet_pton() function does not accept other formats (such as the octal numbers, hexadecimal numbers, ...to: Leading zeroes shall be allowed. The inet_pton() function does not accept other formats (such as octal numbers, hexadecimal numbers, ... |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2022-03-19 00:18 | steffen | New Issue | |
| 2022-03-19 00:18 | steffen | Name | => steffen |
| 2022-03-19 00:18 | steffen | Section | => inet_pton |
| 2022-03-19 00:18 | steffen | Page Number | => 1139 |
| 2022-03-19 00:18 | steffen | Line Number | => 38475 ff. |
| 2022-04-21 16:20 | geoffclare | Note Added: 0005814 | |
| 2022-04-21 16:21 | geoffclare | Interp Status | => --- |
| 2022-04-21 16:21 | geoffclare | Final Accepted Text | => Note: 0005814 |
| 2022-04-21 16:21 | geoffclare | Status | New => Resolved |
| 2022-04-21 16:21 | geoffclare | Resolution | Open => Accepted As Marked |
| 2022-04-21 16:22 | geoffclare | Tag Attached: tc3-2008 | |
| 2022-05-23 11:37 | geoffclare | Status | Resolved => Applied |
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