X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-common%2Fdomain.h;h=53897e748830e954f57b08939c3aca07063f7967;hb=1b00ed03e1a2903b01565e270300f35c3d7db1ae;hp=4a94be12a931e2a31d610f20bc03fc81eeeba964;hpb=5ebf655c85076f200955458673a8bbf0dd927407;p=catta diff --git a/avahi-common/domain.h b/avahi-common/domain.h index 4a94be1..53897e7 100644 --- a/avahi-common/domain.h +++ b/avahi-common/domain.h @@ -1,5 +1,5 @@ #ifndef foodomainhfoo -#define foodimainhfoo +#define foodomainhfoo /* $Id$ */ @@ -22,6 +22,8 @@ USA. ***/ +/** \file domain.h Domain name handling functions */ + #include #include @@ -29,29 +31,72 @@ AVAHI_C_DECL_BEGIN -char *avahi_normalize_name(const char *s); /* avahi_free() the result! */ -char *avahi_get_host_name(void); /* avahi_free() the result! */ +/** The maximum length of a a fully escaped domain name C string. This + * is calculated like this: RFC1034 mandates maximum length of FQDNs + * is 255. The maximum label length is 63. To minimize the number of + * (non-escaped) dots, we comprise our maximum-length domain name of + * four labels รก 63 characters plus three inner dots. Escaping the + * four labels quadruples their length at maximum. An escaped domain + * name has the therefore the maximum length of 63*4*4+3=1011. A + * trailing NUL and perhaps two unnecessary dots leading and trailing + * the string brings us to 1014. */ +#define AVAHI_DOMAIN_NAME_MAX 1014 + +/** Maximum size of an unescaped label */ +#define AVAHI_LABEL_MAX 64 + +/** Normalize a domain name into canonical form. This drops trailing + * dots and removes useless backslash escapes. */ +char *avahi_normalize_name(const char *s, char *ret_s, size_t size); +/** Normalize a domain name into canonical form. This drops trailing + * dots and removes useless backslash escapes. avahi_free() the + * result! */ +char *avahi_normalize_name_strdup(const char *s); + +/** Return 1 when the specified domain names are equal, 0 otherwise */ int avahi_domain_equal(const char *a, const char *b); -int avahi_binary_domain_cmp(const char *a, const char *b); -/* Read the first label from the textual domain name *name, unescape +/** Read the first label from the textual domain name *name, unescape * it and write it to dest, *name is changed to point to the next label*/ char *avahi_unescape_label(const char **name, char *dest, size_t size); -/* Escape the domain name in *src and write it to *ret_name */ -char *avahi_escape_label(const uint8_t* src, size_t src_length, char **ret_name, size_t *ret_size); +/** Escape the domain name in *src and write it to *ret_name */ +char *avahi_escape_label(const char* src, size_t src_length, char **ret_name, size_t *ret_size); + +/** Return a pointer to the type section of a subtype i.e. _foo._sub._bar._tcp => _bar._tcp */ +const char *avahi_get_type_from_subtype(const char *t); + +/** Return 1 when the specified string contains a valid generic + * service type (i.e. a series of words starting with "_"), 0 + * otherwise */ +int avahi_is_valid_service_type_generic(const char *t); + +/** Return 1 when the specified string contains a valid strict service + * type (i.e. consisting of only two words, the latter being either + * _udp or _tcp), 0 otherwise */ +int avahi_is_valid_service_type_strict(const char *t); + +/** Return 1 when the specified string contains a valid service subtype, 0 otherwise */ +int avahi_is_valid_service_subtype(const char *t); + +/** Return 1 when the specified string contains a valid domain name, 0 otherwise */ +int avahi_is_valid_domain_name(const char *t); + +/** Return 1 when the specified string contains a valid service name, 0 otherwise */ +int avahi_is_valid_service_name(const char *t); + +/** Return 1 when the specified string contains a valid non-FQDN host name (i.e. without dots), 0 otherwise */ +int avahi_is_valid_host_name(const char *t); -unsigned avahi_strhash(const char *p); -unsigned avahi_domain_hash(const char *s); +/** Return some kind of hash value for the domain, useful for using domains as hash table keys. */ +unsigned avahi_domain_hash(const char *name); -int avahi_valid_service_type(const char *t); -int avahi_valid_domain_name(const char *t); -int avahi_valid_service_name(const char *t); -int avahi_valid_host_name(const char *t); +/** Construct a valid complete service name from a name, a type and a domain */ +int avahi_service_name_join(char *p, size_t size, const char *name, const char *type, const char *domain); -char *avahi_strup(char *s); -char *avahi_strdown(char *s); +/** Split a full service name into name, type and domain */ +int avahi_service_name_split(const char *p, char *name, size_t name_size, char *type, size_t type_size, char *domain, size_t domain_size); AVAHI_C_DECL_END