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Diffstat (limited to 'src/utils/common/params.h')
| -rw-r--r-- | src/utils/common/params.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/utils/common/params.h b/src/utils/common/params.h new file mode 100644 index 0000000..4059446 --- /dev/null +++ b/src/utils/common/params.h @@ -0,0 +1,172 @@ +/* Copyright (C) 2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +/*! + * \file + * + * \brief Common utils parameters processing. + * + * \addtogroup knot_utils + * @{ + */ + +#pragma once + +#include <limits.h> +#include <stdint.h> +#include <stdbool.h> +#include <stdio.h> + +#include "libknot/libknot.h" +#include "contrib/ucw/lists.h" + +#define DEFAULT_IPV4_NAME "127.0.0.1" +#define DEFAULT_IPV6_NAME "::1" +#define DEFAULT_DNS_PORT "53" +#define DEFAULT_DNS_TLS_PORT "853" +#define DEFAULT_UDP_SIZE 512 +#define DEFAULT_EDNS_SIZE 4096 +#define MAX_PACKET_SIZE 65535 + +#define SEP_CHARS "\n\t " + +/*! \brief Variants of IP protocol. */ +typedef enum { + IP_ALL, + IP_4, + IP_6 +} ip_t; + +/*! \brief Variants of transport protocol. */ +typedef enum { + PROTO_ALL, + PROTO_TCP, + PROTO_UDP +} protocol_t; + +/*! \brief Variants of output type. */ +typedef enum { + /*!< Verbose output (same for host and dig). */ + FORMAT_FULL, + /*!< Short dig output. */ + FORMAT_DIG, + /*!< Brief host output. */ + FORMAT_HOST, + /*!< Brief nsupdate output. */ + FORMAT_NSUPDATE +} format_t; + +/*! \brief Text output settings. */ +typedef struct { + /*!< Output format. */ + format_t format; + + /*!< Style of rrset dump. */ + knot_dump_style_t style; + + /*!< Show query packet. */ + bool show_query; + /*!< Show header info. */ + bool show_header; + /*!< Show section name. */ + bool show_section; + /*!< Show EDNS pseudosection. */ + bool show_edns; + /*!< Show QUERY/ZONE section. */ + bool show_question; + /*!< Show ANSWER/PREREQ section. */ + bool show_answer; + /*!< Show UPDATE/AUTHORITY section. */ + bool show_authority; + /*!< Show ADDITIONAL section. */ + bool show_additional; + /*!< Show TSIG pseudosection. */ + bool show_tsig; + /*!< Show footer info. */ + bool show_footer; + + /*!< KHOST - Hide CNAME record in answer (duplicity reduction). */ + bool hide_cname; +} style_t; + +/*! \brief Parameter handler. */ +typedef int (*param_handle_f)(const char *arg, void *params); + +/*! \brief Parameter argument type. */ +typedef enum { + ARG_NONE, + ARG_REQUIRED, + ARG_OPTIONAL +} arg_t; + +/*! \brief Parameter specification. */ +typedef struct { + const char *name; + arg_t arg; + param_handle_f handler; +} param_t; + +inline static void print_version(const char *program_name) +{ + printf("%s (Knot DNS), version %s\n", program_name, PACKAGE_VERSION); +} + +/*! + * \brief Transforms localized IDN string to ASCII punycode. + * + * \param idn_name IDN name to transform. + * + * \retval NULL if transformation fails. + * \retval string if ok. + */ +char *name_from_idn(const char *idn_name); + +/*! + * \brief Transforms ASCII punycode to localized IDN string. + * + * If an error occurs or IDN support is missing, this function does nothing. + * + * \param name ASCII name to transform and replace with IDN name. + */ +void name_to_idn(char **name); + +/*! + * \brief Find the best parameter match in table based on prefix equality. + * + * \param str Parameter name to look up. + * \param str_len Parameter name length. + * \param tbl Parameter table. + * \param unique Indication if output is unique result. + * + * \retval >=0 looked up parameter position in \a tbl. + * \retval err if error. + */ +int best_param(const char *str, const size_t str_len, const param_t *tbl, + bool *unique); + +char *get_reverse_name(const char *name); + +char *get_fqd_name(const char *name); + +int params_parse_class(const char *value, uint16_t *rclass); + +int params_parse_type(const char *value, uint16_t *rtype, int64_t *serial, + bool *notify); + +int params_parse_server(const char *value, list_t *servers, const char *def_port); + +int params_parse_wait(const char *value, int32_t *dst); + +/*! @} */ |