#23685 [Opn-Fbk]: fake values returned when OID value is an empty string
ID: 23685 Updated by: [EMAIL PROTECTED] Reported By: s dot zagrodzki at net dot icm dot edu dot pl -Status: Open +Status: Feedback Bug Type: SNMP related Operating System: Linux 2.2 PHP Version: 4.3.2RC4-dev New Comment: Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip Make sure the snapshot is build later than Jul 16, 2003 05:30!! Previous Comments: [2003-07-14 15:15:23] [EMAIL PROTECTED] Attempted in various ways, but I cannot reproduce this. Maybe it is a Linux problem, since I do PHP development on a CYGWIN system. Neither do I get the same results as the 'user contributed note' on snmpget. [2003-07-14 09:44:57] s dot zagrodzki at net dot icm dot edu dot pl this issue was also mentioned by javierb at gmx dot net in user contributed notes to snmpget() function manual: http://www.php.net/manual/en/function.snmpget.php [2003-07-14 03:38:00] s dot zagrodzki at net dot icm dot edu dot pl I tried using snmp module from 20030714 snapshot - didn't help. [2003-07-14 02:35:43] s dot zagrodzki at net dot icm dot edu dot pl this is a part of tcpdump of snmpwalk query: ... GetResponse(50) .1.3.6.1.2.1.31.1.1.1.18.3=lacze do Obs. Astr. GetNextRequest(31) .1.3.6.1.2.1.31.1.1.1.18.3 GetResponse(31) .1.3.6.1.2.1.31.1.1.1.18.4= GetNextRequest(31) .1.3.6.1.2.1.31.1.1.1.18.4 GetResponse(59) .1.3.6.1.2.1.31.1.1.1.18.5=: lacze do Wydz. Zarzadzania ... as you can see, snmp agent returns empty value, response length is also correct. And snmpwalk utility also gives correct results. [2003-07-13 14:49:20] [EMAIL PROTECTED] I tried this with other variables (I do not have an SNMP agent implementing the ifXTable) and cannot reproduce it. Therefore I am thinking that it maybe the SNMP agent which returns these values and as a result they show up in PHP. Could you confirm that this is not a problem with the SNMP agent/router. The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/23685 -- Edit this bug report at http://bugs.php.net/?id=23685edit=1
#23685 [Opn-Fbk]: fake values returned when OID value is an empty string
ID: 23685 Updated by: [EMAIL PROTECTED] Reported By: s dot zagrodzki at net dot icm dot edu dot pl -Status: Open +Status: Feedback Bug Type: SNMP related Operating System: Linux 2.2 PHP Version: 4.3.2RC4-dev New Comment: I said: Make sure the snapshot is build _later_ than Jul 16, 2003 05:30!! Previous Comments: [2003-07-16 02:53:43] s dot zagrodzki at net dot icm dot edu dot pl tried 20030716-0530 version, didn't help. I did some more tests: when I tried snmpwalk()ing .1.3.6.1.4.1.9.2.2.1.1.28 tree (which is the same as ifAlias, but resides in enterprises.*) the results were correct. Even more, they had double-quotes on both sides of the string. tcpdump showed that all responses are exactly the same - same length and value, but PHP displayed them in another way. My guess was that snmpwalk has problems when it _knows_ that the type of received OID value is DisplayString. Then it doesn't put quotes with value. Simple test - I removed ifAlias definition from IF-MIB.txt and voila - snmpwalk() returns correct values, but with quotes. It seems like php-snmp has problem with empty values (and when OID type is unknown, the result is not an empty value, but string consisting of two quotes. [2003-07-16 01:05:19] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip Make sure the snapshot is build later than Jul 16, 2003 05:30!! [2003-07-14 15:15:23] [EMAIL PROTECTED] Attempted in various ways, but I cannot reproduce this. Maybe it is a Linux problem, since I do PHP development on a CYGWIN system. Neither do I get the same results as the 'user contributed note' on snmpget. [2003-07-14 09:44:57] s dot zagrodzki at net dot icm dot edu dot pl this issue was also mentioned by javierb at gmx dot net in user contributed notes to snmpget() function manual: http://www.php.net/manual/en/function.snmpget.php [2003-07-14 03:38:00] s dot zagrodzki at net dot icm dot edu dot pl I tried using snmp module from 20030714 snapshot - didn't help. The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/23685 -- Edit this bug report at http://bugs.php.net/?id=23685edit=1
#23685 [Opn-Fbk]: fake values returned when OID value is an empty string
ID: 23685 Updated by: [EMAIL PROTECTED] Reported By: s dot zagrodzki at net dot icm dot edu dot pl -Status: Open +Status: Feedback Bug Type: SNMP related Operating System: Linux 2.2 PHP Version: 4.3.2RC4-dev New Comment: Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip Some changes have been made lately. Previous Comments: [2003-05-19 04:30:19] s dot zagrodzki at net dot icm dot edu dot pl I've copied ext/snmp directory from this snapshot into my php source tree (when I tried to compile the snap as it is, it complained about too old db3 library). It didn't help. [2003-05-18 16:57:47] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip [2003-05-18 15:47:25] s dot zagrodzki at net dot icm dot edu dot pl PHP with snmp module. Sample piece of output from snmpwalk utility from ucd-snmp: $ snmpwalk router community ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias ... ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.3 = lacze do Obs. Astr. ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.4 = ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.5 = : lacze do Wydz. Zarzadzania ... (value of ifAlias.4 is an empty string). Sample script: ? $ifAlias = snmprealwalk(router, community, ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias); print_r($ifAlias); ? Output of sample script: [ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.3] = lacze do Obs. Astr. [ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.4] = lacze do Obs. Astr. [ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.5] = : lacze do Wydz. Zarzadz (ifAlias.4 is now the same as ifAlias.3, not an empty string). ucd-snmp 4.2.6 router is Cisco 2511 with IOS 11.1(5) (don't suppose it matters, but just in case...) -- Edit this bug report at http://bugs.php.net/?id=23685edit=1
