Age | Commit message (Collapse) | Author |
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The current implementations of inet:parse_ipv6_address/1 and
inet:parse_ipv6strict_address/1 permit address strings which have an
unlimited number of leading zeros. Addresses such as:
"0000000000000000000000000000000ffff::"
"::00000000000000000000000000000000000000000000000000000000"
"::0000000f435:1"
If we are using this facility to validate string representations of
IPv6 addresses, then we would end up validating addresses which are
non-conformant (with respect to RFC 4291 section 2.2) and potentially
dangerous.
This patch ensures that each segment of an IPv6 address has a maximum
of 4 hex digits.
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An erroneous lookup option is needed to trigger the bug, and that can only
enter the system from a parsed file e.g .inetrc.
Pinpointed by Emil Holmström
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* raimo/linux-network-namespace-sockopt/OTP-11157:
Document socket option 'netns'
Rudimentary test
Make netns option value a string
Implement netns for SCTP + bugfixes
Implement netns option for TCP and UDP
Implement emulator netns support for TCP and UDP
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* fredrik/inet/export-ip-funcs/OTP-8067:
Inet doc clarifications
Documentation changes inet
Changes to function names, tests and docs of inet
Added specs and doc
Exported ipv4address and ipv6address functions to inet module, changed and made testcases
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made testcases
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On systems supporting getaddrinfo(), support looking up the MAC
address from inet:ifget/2. The results have the same quirks as with
Linux: if the MAC address is longer than 6 bytes (e.g., fw0 under
Mac OS X), the address is truncated; if the interface does not have
a MAC address (e.g., lo0), an address consisting of 0's is returned.
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The byte holding the length of the interface name for the getservbyname/2
function is used in a signed context and can become negative, causing
the buffer to be overrun. Make the same change for getservbyport/2.
Test case:
inet:getservbyname(list_to_atom(lists:flatten(lists:duplicate(128, "x"))), tcp).
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The byte holding the length of the interface name for the ifget/2
functions is used in a signed context and can become negative,
causing the ifreq.ifr_name buffer to be overrun.
Test case:
inet:ifget(lists:duplicate(128, "x"), [addr]).
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* rani/inet_gethostbyname_fixes:
inet_res_SUITE: testcase fixes for legacy DNS resolver (Solaris 8)
inet_res: /etc/resolv.conf: use domain as default search list
inet: delayed/avoided read of /etc/resolv.conf and /etc/hosts
inet_gethost_native: workaround for empty result hostname on MacOS X
inet_res_SUITE: testcase fix for empty domain name
inet:gethostbyname improved to parse IP strings and look up own hostname
OTP-8426 The resolver routines failed to look up the own node name as
hostname, if the OS native resolver was erroneously configured,
bug reported by Yogish Baliga, now fixed.
The resolver routines now tries to parse the hostname as an IP
string as most OS resolvers do, unless the native resolver is
used.
The DNS resolver inet_res and file resolver inet_hosts now do not
read OS configuration files until they are needed. Since the
native resolver is default, in most cases they are never needed.
The DNS resolver's automatic updating of OS configuration file
data (/etc/resolv.conf) now uses the 'domain' keyword as default
search domain if there is no 'search' keyword.
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Now inet:gethostbyname tries to parse the hostname as an IP string
first if the 'native' lookup method is not used. One can also
make the IP string parsing explicit using the new 'string'
lookup method, or avoid it using the new pseudo lookup
method 'nostring'.
In R13B04 a bug was introduced when the gethostbyname code
was rewritten, so if the native resolver was used and
misconfigured to not be able to look up the own hostname,
inet:gethostbyname also failed. This is now fixed.
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