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41 lines
1.3 KiB
41 lines
1.3 KiB
.TH scan_ip6if 3 |
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.SH NAME |
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scan_ip6 \- parse an IPv6 number and interface in ASCII representation |
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.SH SYNTAX |
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.B #include <ip6.h> |
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int \fBscan_ip6if\fP(const char *\fIsrc\fR,char \fIip\fR[16],uint32* scope_id); |
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.SH DESCRIPTION |
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scan_ip6if parses an IPv6 number in RFC1884 ASCII representation |
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from \fIsrc\fR and writes the result into \fIip\fR. If the IPv6 number |
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is followed by the percent sign, scan_ip6if takes the word following |
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that, tries to parse it as network interface and writes the result to |
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\fIscope_id\fR. |
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It returns the number of bytes read from \fIsrc\fR or 0 if the parsing |
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failed. |
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scan_ip6if accepts upper and lower case hex letters, it understands "::" |
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compression and partial IPv4 addresses as in "::FFFF:129.144.52.38". |
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To allow transparent usage of IPv4 in IPv6 applications, scan_ip6if also |
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understands IPv4 addresses in dotted-decimal notation and will return |
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an IPv4-mapped IPv6 address (i.e. "127.0.0.1" will be parsed as |
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"::FFFF:127.0.0.1". |
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Unlike many other IP parsing routines, scan_ip6if does not recognize octal |
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(like \fB0177.0.0.1\fR) or hexadecimal numbers (like \fB0x7f000001\fR) |
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in the IPv4 part. |
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.SH EXAMPLE |
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#include <str.h> |
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.br |
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#include <ip6.h> |
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char buf[]="::1%lo"; |
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char ip[16]; |
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uint32 scope_id; |
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if (scan_ip6if(buf,ip,&scope_id) != str_len(buf)) |
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parse_error(); |
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.SH "SEE ALSO" |
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fmt_ip6(3), scan_ip4(3), fmt_ip6if(3)
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