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a496b6042b
Sin Yu's patch to permit to change the proxy from a regex was merged
with little changes :
- req_cap/rsp_cap are not reassigned to the new proxy, they stay
attached to the frontend
- the actions have been renamed "reqsetbe" and "reqisetbe" for
"set BackEnd".
- the buffer is not reset after the switch, instead, the headers are
parsed again by the backend
- in Sin's patch, it was theorically possible to switch multiple times,
but the switching track was lost, making it impossible to apply
server responsesin the reverse order. Now switching is limited to
1 action (separation between frontend and backend) but the filters
remain.
Now it will be extremely easy to add other switching conditions, such
as host matching, URI matching, etc...
There's still a hard work to be done on the logs and stats.
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
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include/common/regex.h
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This file defines everything related to regular expressions.
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Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation, version 2.1
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exclusively.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _COMMON_REGEX_H
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#define _COMMON_REGEX_H
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#include <common/config.h>
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#ifdef USE_PCRE
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#include <pcre.h>
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#include <pcreposix.h>
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#else
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#include <regex.h>
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#endif
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/* what to do when a header matches a regex */
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#define ACT_ALLOW 0 /* allow the request */
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#define ACT_REPLACE 1 /* replace the matching header */
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#define ACT_REMOVE 2 /* remove the matching header */
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#define ACT_DENY 3 /* deny the request */
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#define ACT_PASS 4 /* pass this header without allowing or denying the request */
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#define ACT_TARPIT 5 /* tarpit the connection matching this request */
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#define ACT_SETBE 6 /* switch the backend */
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struct hdr_exp {
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struct hdr_exp *next;
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const regex_t *preg; /* expression to look for */
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int action; /* ACT_ALLOW, ACT_REPLACE, ACT_REMOVE, ACT_DENY */
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const char *replace; /* expression to set instead */
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};
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extern regmatch_t pmatch[MAX_MATCH];
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int exp_replace(char *dst, char *src, const char *str, const regmatch_t *matches);
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const char *check_replace_string(const char *str);
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const char *chain_regex(struct hdr_exp **head, const regex_t *preg,
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int action, const char *replace);
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#endif /* _COMMON_REGEX_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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