I did some more testing and found out that is does not matter what
operator I use in the outer $if (Example, replace def:var by eq etc.).
But what changes this is the fail in $extract, here's a different example:
exim -d-all+expand -be '${if
def:received_ip_address{${extract{$received_ip_address}{10.0.0.1=hosta
127.0.0.1=local4 ::1=local6}{$value}{$primary_hostname}}}fail}'
Exim version 4.87 uid=0 gid=0 pid=18087 D=100
Berkeley DB: Berkeley DB 6.0.35: (February 26, 2015)
Support for: crypteq iconv() IPv6 PAM OpenSSL DKIM DNSSEC Event OCSP PRDR
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm
dbmjz dbmnz dnsdb dsearch passwd sqlite
Authenticators: cram_md5 plaintext spa
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/mailstore autoreply pipe smtp
Fixed never_users: 0
Size of off_t: 8
Compiler: GCC [5.3.0]
Library version: OpenSSL: Compile: OpenSSL 1.0.2h 3 May 2016
Runtime: OpenSSL 1.0.2h 3 May 2016
: built on: reproducible build, date
unspecified
Library version: PCRE: Compile: 8.38
Runtime: 8.38 2015-11-23
Library version: SQLite: Compile: 3.12.2
Runtime: 3.13.0
WHITELIST_D_MACROS unset
TRUSTED_CONFIG_LIST unset
configuration file is /etc/exim/exim.conf
log selectors = 0000cffc 10332001
trusted user
admin user
condition: def:received_ip_address
result: false
expanding: $received_ip_address
result:
skipping: result is not used
expanding: 10.0.0.1=hosta 127.0.0.1=local4 ::1=local6
result: 10.0.0.1=hosta 127.0.0.1=local4 ::1=local6
skipping: result is not used
expanding: $value
result:
skipping: result is not used
expanding: $primary_hostname
result:
skipping: result is not used
expanding: ${extract{$received_ip_address}{10.0.0.1=hosta
127.0.0.1=local4 ::1=local6}{$value}{$primary_hostname}}
result:
skipping: result is not used
failed to expand: ${if
def:received_ip_address{${extract{$received_ip_address}{10.0.0.1=hosta
127.0.0.1=local4 ::1=local6}{$value}{$primary_hostname}}}fail}
error message: "if" failed and "fail" requested
failure was forced
Failed: "if" failed and "fail" requested
>>>>>>>>>>>>>>>> Exim pid=18087 terminating with rc=0 >>>>>>>>>>>>>>>>
As can be observed the parsing of the ${extract} substring now works
correctly. So when ${extract} is used with a keyed extraction, where
{<string3>} is repplaced with the word fail without curly braces,
parsing seems to go wrong at some point.
Regards
-Sven
Am 01.06.2016 um 15:39 schrieb Sven Eschenberg:
>
> Am 01.06.2016 um 14:50 schrieb Jeremy Harris:
>> On 01/06/16 13:42, Sven Eschenberg wrote:
>>> Thanks for your input
>>
>> Exim version?
>
> Exim version 4.87 #1 built 24-May-2016 01:15:17
>
>>
>> Run with "-d-all+expand".
>>
>
> All of them, or just the one yielding the syntax error?
>
> exim -d-all+expand -be '${if
> def:received_ip_address{${extract{$received_ip_address}{10.0.0.1=hosta
> 127.0.0.1=local4 ::1=local6}{$value}fail}}fail}'
> Exim version 4.87 uid=0 gid=0 pid=18037 D=100
> Berkeley DB: Berkeley DB 6.0.35: (February 26, 2015)
> Support for: crypteq iconv() IPv6 PAM OpenSSL DKIM DNSSEC Event OCSP PRDR
> Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm
> dbmjz dbmnz dnsdb dsearch passwd sqlite
> Authenticators: cram_md5 plaintext spa
> Routers: accept dnslookup ipliteral manualroute queryprogram redirect
> Transports: appendfile/mailstore autoreply pipe smtp
> Fixed never_users: 0
> Size of off_t: 8
> Compiler: GCC [5.3.0]
> Library version: OpenSSL: Compile: OpenSSL 1.0.2h 3 May 2016
> Runtime: OpenSSL 1.0.2h 3 May 2016
> : built on: reproducible build, date
> unspecified
> Library version: PCRE: Compile: 8.38
> Runtime: 8.38 2015-11-23
> Library version: SQLite: Compile: 3.12.2
> Runtime: 3.13.0
> WHITELIST_D_MACROS unset
> TRUSTED_CONFIG_LIST unset
> configuration file is /etc/exim/exim.conf
> log selectors = 0000cffc 10332001
> trusted user
> admin user
> condition: def:received_ip_address
> result: false
> expanding: $received_ip_address
> result:
> skipping: result is not used
> expanding: 10.0.0.1=hosta 127.0.0.1=local4 ::1=local6
> result: 10.0.0.1=hosta 127.0.0.1=local4 ::1=local6
> skipping: result is not used
> expanding: $value
> result:
> skipping: result is not used
> failed to expand: ${extract{$received_ip_address}{10.0.0.1=hosta
> 127.0.0.1=local4 ::1=local6}{$value}fail}}fail}
> error message: missing or misplaced { or }
> failed to expand: ${if
> def:received_ip_address{${extract{$received_ip_address}{10.0.0.1=hosta
> 127.0.0.1=local4 ::1=local6}{$value}fail}}fail}
> error message: missing or misplaced { or }
> Failed: missing or misplaced { or }
>>>>>>>>>>>>>>>>> Exim pid=18037 terminating with rc=0 >>>>>>>>>>>>>>>>
>
> As far as I understand this the failure is already triggered during
> ${extract} which should be skipped since def:received_ip_address yields
> false. But maybe I am reading this wrong.
>
> Looking at this variant with $if{ instead of ${extract I can see that
> the string of the expansion stops after the first fail and bracket, ie:
>
> expanding: ${if eq{10.0.0.1}{$received_ip_address}{hosta}fail}
> result:
> skipping: result is not used
>
> whereas the string parsing seems to go wrong for the ${extract case ...
> since the string concludes with fail}}fail} where it should probably end
> at fail}?
>
> Regards
>
> -Sven
>
