diff options
Diffstat (limited to 'lib/snmp/src')
| -rw-r--r-- | lib/snmp/src/app/snmp.appup.src | 4 | ||||
| -rw-r--r-- | lib/snmp/src/misc/snmp_pdus.erl | 44 |
2 files changed, 39 insertions, 9 deletions
diff --git a/lib/snmp/src/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src index f931b14338..5deb40be0f 100644 --- a/lib/snmp/src/app/snmp.appup.src +++ b/lib/snmp/src/app/snmp.appup.src @@ -29,6 +29,7 @@ {load_module, snmpa_usm, soft_purge, soft_purge, []}, {load_module, snmpm_usm, soft_purge, soft_purge, []}, {load_module, snmp_log, soft_purge, soft_purge, []}, + {load_module, snmp_pdus, soft_purge, soft_purge, []}, {load_module, snmp_conf, soft_purge, soft_purge, []}, {load_module, snmpa_conf, soft_purge, soft_purge, [snmp_conf]}, {load_module, snmp_misc, soft_purge, soft_purge, []}, @@ -61,6 +62,7 @@ {load_module, snmpm_usm, soft_purge, soft_purge, []}, {load_module, snmp_misc, soft_purge, soft_purge, []}, {load_module, snmp_log, soft_purge, soft_purge, []}, + {load_module, snmp_pdus, soft_purge, soft_purge, []}, {load_module, snmp_conf, soft_purge, soft_purge, []}, {load_module, snmp_config, soft_purge, soft_purge, [snmp_conf]}, {load_module, snmpa_conf, soft_purge, soft_purge, []}, @@ -114,6 +116,7 @@ {load_module, snmpa_usm, soft_purge, soft_purge, []}, {load_module, snmpm_usm, soft_purge, soft_purge, []}, {load_module, snmp_log, soft_purge, soft_purge, []}, + {load_module, snmp_pdus, soft_purge, soft_purge, []}, {load_module, snmp_conf, soft_purge, soft_purge, []}, {load_module, snmpa_conf, soft_purge, soft_purge, [snmp_conf]}, {load_module, snmp_misc, soft_purge, soft_purge, []}, @@ -148,6 +151,7 @@ {load_module, snmpm_usm, soft_purge, soft_purge, []}, {load_module, snmp_misc, soft_purge, soft_purge, []}, {load_module, snmp_log, soft_purge, soft_purge, []}, + {load_module, snmp_pdus, soft_purge, soft_purge, []}, {load_module, snmp_conf, soft_purge, soft_purge, []}, {load_module, snmpa_conf, soft_purge, soft_purge, [snmp_conf]}, {load_module, snmp_config, soft_purge, soft_purge, []}, diff --git a/lib/snmp/src/misc/snmp_pdus.erl b/lib/snmp/src/misc/snmp_pdus.erl index dc8900c8cd..82618a0b86 100644 --- a/lib/snmp/src/misc/snmp_pdus.erl +++ b/lib/snmp/src/misc/snmp_pdus.erl @@ -269,24 +269,35 @@ dec_value([64 | Bytes]) -> {Value, Rest} = dec_oct_str_notag(Bytes), {{'IpAddress', Value}, Rest}; dec_value([65 | Bytes]) -> + %% Counter32 is an unsigned 32 but is actually encoded as + %% a signed integer 32 (INTEGER). {Value, Rest} = dec_integer_notag(Bytes), - if Value >= 0, Value =< 4294967295 -> - {{'Counter32', Value}, Rest}; - true -> - exit({error, {bad_counter32, Value}}) - end; + Value2 = + if + (Value >= 0) andalso (Value =< 16#ffffffff) -> + %% We accept value above 16#7fffffff + %% in order to be backward bug-compatible + Value; + (Value < 0) -> + 16#ffffffff + Value + 1; + true -> + exit({error, {bad_counter32, Value}}) + end, + {{'Counter32', Value2}, Rest}; dec_value([66 | Bytes]) -> {Value, Rest} = dec_integer_notag(Bytes), - if Value >= 0, Value =< 4294967295 -> + if + (Value >= 0) andalso (Value =< 4294967295) -> {{'Unsigned32', Value}, Rest}; - true -> + true -> exit({error, {bad_unsigned32, Value}}) end; dec_value([67 | Bytes]) -> {Value, Rest} = dec_integer_notag(Bytes), - if Value >= 0, Value =< 4294967295 -> + if + (Value >= 0) andalso (Value =< 4294967295) -> {{'TimeTicks', Value}, Rest}; - true -> + true -> exit({error, {bad_timeticks, Value}}) end; dec_value([68 | Bytes]) -> @@ -642,6 +653,21 @@ enc_value(_Type, endOfMibView) -> [130,0]; enc_value('NULL', _Val) -> [5,0]; +enc_value('Counter32', Val) -> + Val2 = + if + Val > 16#ffffffff -> + exit({error, {bad_counter32, Val}}); + Val >= 16#80000000 -> + (Val band 16#7fffffff) - 16#80000000; + Val >= 0 -> + Val; + true -> + exit({error, {bad_counter32, Val}}) + end, + Bytes2 = enc_integer_notag(Val2), + Len2 = elength(length(Bytes2)), + lists:append([65 | Len2],Bytes2); enc_value('Counter64', Val) -> Val2 = if |