13 Oct
2020
13 Oct
'20
4:22 p.m.
Henning, Daniel,
thanks for your replies.
1. I don't want to use a Regex module because it might have a performance
impact.
Matches the given string parameter against the regular
expression
pcre_regex, which is compiled in runtime into a PCRE object.
2. I was surprised to find that the operator "=~" is case insensitive:
if (regcomp(re, (char*) exp->r.param,
REG_EXTENDED|REG_NOSUB|REG_ICASE) ){
LM_CRIT("bad re \"%s\"\n", (char*) exp->r.param);
pkg_free(re);
return E_BAD_RE;
}
so that enough for me:
$tU =~ "^test$"
Btw, what if I need case sensitive validation? Should I use the Regex
module?
Regards,
Marat
вт, 13 окт. 2020 г. в 14:17, Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
Hello,
adding some more details to mention that regex operations done by the core
(the =~ operator) use the libc posix regex functions, which do not support
extended syntax. Also, these operations done by core use the case
insensitive flag.
As mentioned by Henning, regex should be an alternative, or maybe dialplan
if one wants db-storage+caching of those regex rules.
Moreover, if the above are not enough, a kemi embedded interpreter (e.g.,
app_lua, app_python) can be used with inline execution in kamailio.cfg
routing blocks -- those external scripting languages should have many
options for regex matching.
Cheers,
Daniel
On 13.10.20 13:04, Henning Westerholt wrote:
Hello,
just an idea, have you already tried this module:
https://www.kamailio.org/docs/modules/stable/modules/regex.html
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com
*From:* sr-users <sr-users-bounces(a)lists.kamailio.org>
<sr-users-bounces(a)lists.kamailio.org> *On Behalf Of *Marat Gareev
*Sent:* Tuesday, October 13, 2020 10:55 AM
*To:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
<sr-users(a)lists.kamailio.org>
*Subject:* [SR-Users] Caseless regex
Hello,
Is it possible write more readable regular expression
if ($tU =~ "(?i)^test$") {
...
}
instead of "^[tT][eE][sS][tT]$"?
On the first option, I get the error:
0(47250) ERROR: <core> [core/rvalue.c:3038]: fix_match_rve(): Bad regular
expression
Regards,
Marat
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