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79beb248b9
This modification makes possible to use sample_fetch_string() in more places, where we might need to fetch sample values which are not plain strings. This way we don't need to fetch string, and convert it into another type afterwards. When using aliased types, the caller should explicitly check which exact type was returned (e.g. SMP_T_IPV4 or SMP_T_IPV6 for SMP_T_ADDR). All usages of sample_fetch_string() are converted to use new function.
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_as_type(struct proxy *px, struct session *sess,
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struct stream *strm, unsigned int opt,
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struct sample_expr *expr, int smp_type);
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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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