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6322c9fbbf
This is like DEFZERO and DEFNULL, but this one allows to specify the default value to be used as the first argument.
209 lines
7.6 KiB
C
209 lines
7.6 KiB
C
/*
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* include/haproxy/tools-t.h
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* This files contains some general purpose macros and structures.
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*
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* Copyright (C) 2000-2020 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 _HAPROXY_TOOLS_T_H
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#define _HAPROXY_TOOLS_T_H
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#include <netinet/in.h>
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#include <import/cebtree.h>
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/* size used for max length of decimal representation of long long int. */
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#define NB_LLMAX_STR (sizeof("-9223372036854775807")-1)
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/* number of itoa_str entries */
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#define NB_ITOA_STR 16
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/* maximum quoted string length (truncated above) */
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#define QSTR_SIZE 200
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#define NB_QSTR 10
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/* returns 1 only if only zero or one bit is set in X, which means that X is a
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* power of 2, and 0 otherwise */
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#define POWEROF2(x) (((x) & ((x)-1)) == 0)
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/* return an integer of type <ret> with only the highest bit set. <ret> may be
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* both a variable or a type.
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*/
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#define MID_RANGE(ret) ((typeof(ret))1 << (8*sizeof(ret) - 1))
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/* return the largest possible integer of type <ret>, with all bits set */
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#define MAX_RANGE(ret) (~(typeof(ret))0)
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/* DEFVAL() returns either the second argument as-is, or <def> if absent. This
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* is for use in macros arguments.
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*/
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#define DEFVAL(_def,...) _FIRST_ARG(NULL, ##__VA_ARGS__, (_def))
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/* DEFNULL() returns either the argument as-is, or NULL if absent. This is for
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* use in macros arguments.
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*/
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#define DEFNULL(...) DEFVAL(NULL, ##__VA_ARGS__)
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/* DEFZERO() returns either the argument as-is, or 0 if absent. This is for
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* use in macros arguments.
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*/
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#define DEFZERO(...) DEFVAL(0, ##__VA_ARGS__)
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#define _FIRST_ARG(a, b, ...) b
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/* options flags for parse_line() */
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#define PARSE_OPT_SHARP 0x00000001 // '#' ends the line
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#define PARSE_OPT_BKSLASH 0x00000002 // '\' escapes chars
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#define PARSE_OPT_SQUOTE 0x00000004 // "'" encloses a string
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#define PARSE_OPT_DQUOTE 0x00000008 // '"' encloses a string
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#define PARSE_OPT_ENV 0x00000010 // '$' is followed by environment variables
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#define PARSE_OPT_INPLACE 0x00000020 // parse and tokenize in-place (src == dst)
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#define PARSE_OPT_WORD_EXPAND 0x00000040 // '[*]' suffix to expand an environment variable as several individual arguments
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/* return error flags from parse_line() */
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#define PARSE_ERR_TOOLARGE 0x00000001 // result is too large for initial outlen
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#define PARSE_ERR_TOOMANY 0x00000002 // more words than initial nbargs
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#define PARSE_ERR_QUOTE 0x00000004 // unmatched quote (offending one at errptr)
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#define PARSE_ERR_BRACE 0x00000008 // unmatched brace (offending one at errptr)
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#define PARSE_ERR_HEX 0x00000010 // unparsable hex sequence (at errptr)
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#define PARSE_ERR_VARNAME 0x00000020 // invalid variable name (at errptr)
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#define PARSE_ERR_OVERLAP 0x00000040 // output overlaps with input, need to allocate
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#define PARSE_ERR_WRONG_EXPAND 0x00000080 // unparsable word expansion sequence
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/* special return values for the time parser (parse_time_err()) */
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#define PARSE_TIME_UNDER ((char *)1)
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#define PARSE_TIME_OVER ((char *)2)
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/* unit flags to pass to parse_time_err() */
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#define TIME_UNIT_US 0x0000
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#define TIME_UNIT_MS 0x0001
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#define TIME_UNIT_S 0x0002
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#define TIME_UNIT_MIN 0x0003
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#define TIME_UNIT_HOUR 0x0004
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#define TIME_UNIT_DAY 0x0005
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#define TIME_UNIT_MASK 0x0007
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#define SEC 1
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#define MINUTE (60 * SEC)
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#define HOUR (60 * MINUTE)
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#define DAY (24 * HOUR)
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/* Address parsing options for use with str2sa_range() */
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#define PA_O_RESOLVE 0x00000001 /* do resolve the FQDN to an IP address */
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#define PA_O_PORT_OK 0x00000002 /* ports are supported */
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#define PA_O_PORT_MAND 0x00000004 /* ports are mandatory */
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#define PA_O_PORT_RANGE 0x00000008 /* port ranges are supported */
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#define PA_O_PORT_OFS 0x00000010 /* port offsets are supported */
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#define PA_O_SOCKET_FD 0x00000020 /* inherited socket FDs are supported */
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#define PA_O_RAW_FD 0x00000040 /* inherited raw FDs are supported (pipes, ttys, ...) */
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#define PA_O_DGRAM 0x00000080 /* the address can be used for a datagram socket (in or out) */
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#define PA_O_STREAM 0x00000100 /* the address can be used for streams (in or out) */
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#define PA_O_XPRT 0x00000200 /* transport protocols may be specified */
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#define PA_O_CONNECT 0x00000400 /* the protocol must have a ->connect method */
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#define PA_O_DEFAULT_DGRAM 0x00000800 /* by default, this address will be used for a datagram socket */
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/* UTF-8 decoder status */
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#define UTF8_CODE_OK 0x00
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#define UTF8_CODE_OVERLONG 0x10
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#define UTF8_CODE_INVRANGE 0x20
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#define UTF8_CODE_BADSEQ 0x40
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/* HAP_STRING() makes a string from a literal while HAP_XSTRING() first
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* evaluates the argument and is suited to pass macros.
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*
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* They allow macros like PCRE_MAJOR to be defined without quotes, which
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* is convenient for applications that want to test its value.
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*/
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#define HAP_STRING(...) #__VA_ARGS__
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#define HAP_XSTRING(...) HAP_STRING(__VA_ARGS__)
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/* operators to compare values. They're ordered that way so that the lowest bit
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* serves as a negation for the test and contains all tests that are not equal.
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*/
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enum {
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STD_OP_LE = 0, STD_OP_GT = 1,
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STD_OP_EQ = 2, STD_OP_NE = 3,
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STD_OP_GE = 4, STD_OP_LT = 5,
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};
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enum http_scheme {
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SCH_HTTP,
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SCH_HTTPS,
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};
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/* output format used by url2sa() */
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struct split_url {
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enum http_scheme scheme;
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const char *host;
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int host_len;
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};
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/* generic structure associating a name and a value, for use in arrays */
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struct name_desc {
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const char *name;
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const char *desc;
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};
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struct net_addr {
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int family; /* AF_INET or AF_INET6 if defined, AF_UNSET if undefined */
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union {
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struct {
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struct in_addr ip;
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struct in_addr mask;
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} v4;
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struct {
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struct in6_addr ip;
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struct in6_addr mask;
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} v6;
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} addr;
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};
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/* holds socket and xprt types for a given address */
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struct net_addr_type {
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int proto_type; // socket layer
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int xprt_type; // transport layer
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};
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/* To easily pass context to cbor encode functions
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*/
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struct cbor_encode_ctx {
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/* function pointer that cbor encode functions will use to encode a
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* single byte.
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*
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* The function needs to return the position of the last written byte
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* on success and NULL on failure. The function cannot write past <stop>
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*/
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char *(*e_fct_byte)(struct cbor_encode_ctx *ctx,
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char *start, char *stop, uint8_t byte);
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/* to provide some user-context to the encode_fct_* funcs */
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void *e_fct_ctx;
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};
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/* An indexed file name node, to be used at various places where a config file
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* location is expected. These elements live forever and are only released on
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* deinit. The goal is to use them in place of a regular "char* file" in many
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* structures so that they can remain referenced without being strduped nor
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* refcounted. Refcounts might appear in the future. The root is file_names in
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* tools.c.
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*/
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struct file_name_node {
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struct ceb_node node; /* indexing node */
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char name[VAR_ARRAY]; /* storage, used with cebus_*() */
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};
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#endif /* _HAPROXY_TOOLS_T_H */
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