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authorHans Nilsson <[email protected]>2018-05-09 11:42:49 +0200
committerHans Nilsson <[email protected]>2018-05-09 12:10:21 +0200
commitebcece7f317f6d4e4d580c1f5629f4f46defe272 (patch)
tree63cfe60c2fee11f4f73a8b95bed4f849dadc72e7 /lib
parent79e3c477f8d0d8ea397820847c576e0a0aaa5323 (diff)
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ssh: Add infinity as values to rekey_limit
Zero is removed from the Minutes in the new tuple value to remove a loop possibility. The zero is kept for bytes since that is not dangerous and a removal would be an unnecssary incompatibility.
Diffstat (limited to 'lib')
-rw-r--r--lib/ssh/doc/src/ssh.xml6
-rw-r--r--lib/ssh/src/ssh.hrl7
-rw-r--r--lib/ssh/src/ssh_options.erl21
3 files changed, 24 insertions, 10 deletions
diff --git a/lib/ssh/doc/src/ssh.xml b/lib/ssh/doc/src/ssh.xml
index 6aed525e8b..407956cc6f 100644
--- a/lib/ssh/doc/src/ssh.xml
+++ b/lib/ssh/doc/src/ssh.xml
@@ -762,6 +762,8 @@
<datatype>
<name name="rekey_limit_common_option"/>
+ <name name="limit_bytes"/>
+ <name name="limit_time"/>
<desc>
<p>Sets the limit when rekeying is to be initiated. Both the max time and max amount of data
could be configured:
@@ -773,6 +775,10 @@
</list>
<p>When a rekeying is done, both the timer and the byte counter are restarted.
Defaults to one hour and one GByte.</p>
+ <p>If <c>Minutes</c> is set to <c>infinity</c>, no rekeying will ever occur due to that max time has passed.
+ Setting <c>Bytes</c> to <c>infinity</c> will inhibit rekeying after a certain amount of data has been transferred.
+ If the option value is set to <c>{infinity, infinity}</c>, no rekeying will be initiated. Note that rekeying initiated
+ by the peer will still be performed.</p>
</desc>
</datatype>
diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl
index fc0a3786ac..2efd239aae 100644
--- a/lib/ssh/src/ssh.hrl
+++ b/lib/ssh/src/ssh.hrl
@@ -191,10 +191,13 @@
-type user_dir_common_option() :: {user_dir, false | string()}.
-type profile_common_option() :: {profile, atom() }.
-type max_idle_time_common_option() :: {idle_time, timeout()}.
--type rekey_limit_common_option() :: {rekey_limit, Bytes::non_neg_integer() |
- {Minutes::non_neg_integer(), Bytes::non_neg_integer()}
+-type rekey_limit_common_option() :: {rekey_limit, Bytes::limit_bytes() |
+ {Minutes::limit_time(), Bytes::limit_bytes()}
}.
+-type limit_bytes() :: non_neg_integer() | infinity . % non_neg_integer due to compatibility
+-type limit_time() :: pos_integer() | infinity .
+
-type key_cb_common_option() :: {key_cb, Module::atom() | {Module::atom(),Opts::[term()]} } .
-type disconnectfun_common_option() ::
{disconnectfun, fun((Reason::term()) -> void | any()) }.
diff --git a/lib/ssh/src/ssh_options.erl b/lib/ssh/src/ssh_options.erl
index 73287e464a..fe95d2ac54 100644
--- a/lib/ssh/src/ssh_options.erl
+++ b/lib/ssh/src/ssh_options.erl
@@ -601,14 +601,19 @@ default(common) ->
{rekey_limit, def} =>
#{default => {3600000, 1024000000}, % {1 hour, 1 GB}
- chk => fun({TimeMins, SizBytes}) when is_integer(TimeMins) andalso TimeMins>=0,
- is_integer(SizBytes) andalso SizBytes>=0 ->
- %% New (>= 21) format
- {true, {TimeMins * 60*1000, % To ms
- SizBytes}};
- (SizBytes) when is_integer(SizBytes) andalso SizBytes>=0 ->
- %% Old (< 21) format
- {true, {3600000, SizBytes}};
+ chk => fun({infinity, infinity}) ->
+ true;
+ ({Mins, infinity}) when is_integer(Mins), Mins>0 ->
+ {true, {Mins*60*1000, infinity}};
+ ({infinity, Bytes}) when is_integer(Bytes), Bytes>=0 ->
+ true;
+ ({Mins, Bytes}) when is_integer(Mins), Mins>0,
+ is_integer(Bytes), Bytes>=0 ->
+ {true, {Mins*60*1000, Bytes}};
+ (infinity) ->
+ {true, {3600000, infinity}};
+ (Bytes) when is_integer(Bytes), Bytes>=0 ->
+ {true, {3600000, Bytes}};
(_) ->
false
end,