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192252e2d8
Many such function need a session, and till now they used to dereference the stream. Once we remove the stream from the embryonic session, this will not be possible anymore. So as of now, sample fetch functions will be called with this : - sess = NULL, strm = NULL : never - sess = valid, strm = NULL : tcp-req connection - sess = valid, strm = valid, strm->txn = NULL : tcp-req content - sess = valid, strm = valid, strm->txn = valid : http-req / http-res
67 lines
2.7 KiB
C
67 lines
2.7 KiB
C
/*
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* include/proto/sample.h
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* Functions for samples management.
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*
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* Copyright (C) 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
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* Copyright (C) 2012 Willy Tarreau <w@1wt.eu>
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*
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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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*
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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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*
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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 _PROTO_SAMPLE_H
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#define _PROTO_SAMPLE_H
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#include <types/sample.h>
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#include <types/stick_table.h>
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extern const char *smp_to_type[SMP_TYPES];
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struct sample_expr *sample_parse_expr(char **str, int *idx, const char *file, int line, char **err, struct arg_list *al);
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struct sample_conv *find_sample_conv(const char *kw, int len);
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struct sample *sample_process(struct proxy *px, struct session *sess,
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struct stream *strm, unsigned int opt,
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struct sample_expr *expr, struct sample *p);
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struct sample *sample_fetch_string(struct proxy *px, struct session *sess,
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struct stream *strm, unsigned int opt,
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struct sample_expr *expr);
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void sample_register_fetches(struct sample_fetch_kw_list *psl);
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void sample_register_convs(struct sample_conv_kw_list *psl);
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const char *sample_src_names(unsigned int use);
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const char *sample_ckp_names(unsigned int use);
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struct sample_fetch *find_sample_fetch(const char *kw, int len);
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struct sample_fetch *sample_fetch_getnext(struct sample_fetch *current, int *idx);
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struct sample_conv *sample_conv_getnext(struct sample_conv *current, int *idx);
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int smp_resolve_args(struct proxy *p);
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int smp_expr_output_type(struct sample_expr *expr);
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int c_none(struct sample *smp);
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int smp_dup(struct sample *smp);
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/*
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* This function just apply a cast on sample. It returns 0 if the cast is not
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* avalaible or if the cast fails, otherwise returns 1. It does not modify the
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* input sample on failure.
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*/
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static inline
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int sample_convert(struct sample *sample, int req_type)
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{
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if (!sample_casts[sample->type][req_type])
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return 0;
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if (sample_casts[sample->type][req_type] == c_none)
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return 1;
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return sample_casts[sample->type][req_type](sample);
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}
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#endif /* _PROTO_SAMPLE_H */
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