mirror of
git://git.musl-libc.org/musl
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bdad2fefb2
for all address types, a scope_id specified as a decimal value is accepted. for addresses with link-local scope, a string containing the interface name is also accepted. some changes are made to error handling to avoid unwanted fallbacks in the case where the scope_id is invalid: if an earlier name lookup backend fails with an error rather than simply "0 results", this failure now suppresses any later attempts with other backends. in getnameinfo, a light "itoa" type function is added for generating decimal scope_id results, and decimal port strings for services are also generated using this function now so as not to pull in the dependency on snprintf. in netdb.h, a definition for the NI_NUMERICSCOPE flag is added. this is required by POSIX (it was previously missing) and needed to allow callers to suppress interface-name lookups.
164 lines
3.9 KiB
C
164 lines
3.9 KiB
C
#ifndef _NETDB_H
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#define _NETDB_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#include <netinet/in.h>
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define __NEED_size_t
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#include <bits/alltypes.h>
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#endif
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struct addrinfo
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{
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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socklen_t ai_addrlen;
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struct sockaddr *ai_addr;
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char *ai_canonname;
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struct addrinfo *ai_next;
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};
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#define IPPORT_RESERVED 1024
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#define AI_PASSIVE 0x01
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#define AI_CANONNAME 0x02
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#define AI_NUMERICHOST 0x04
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#define AI_V4MAPPED 0x08
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#define AI_ALL 0x10
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#define AI_ADDRCONFIG 0x20
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#define AI_NUMERICSERV 0x400
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#define NI_NUMERICHOST 0x01
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#define NI_NUMERICSERV 0x02
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#define NI_NOFQDN 0x04
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#define NI_NAMEREQD 0x08
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#define NI_DGRAM 0x10
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#define NI_NUMERICSCOPE 0x100
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#define EAI_BADFLAGS -1
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#define EAI_NONAME -2
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#define EAI_AGAIN -3
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#define EAI_FAIL -4
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#define EAI_FAMILY -6
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#define EAI_SOCKTYPE -7
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#define EAI_SERVICE -8
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#define EAI_MEMORY -10
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#define EAI_SYSTEM -11
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#define EAI_OVERFLOW -12
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int getaddrinfo (const char *__restrict, const char *__restrict, const struct addrinfo *__restrict, struct addrinfo **__restrict);
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void freeaddrinfo (struct addrinfo *);
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int getnameinfo (const struct sockaddr *__restrict, socklen_t, char *__restrict, socklen_t, char *__restrict, socklen_t, int);
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const char *gai_strerror(int);
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/* Legacy functions follow (marked OBsolete in SUS) */
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struct netent
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{
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char *n_name;
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char **n_aliases;
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int n_addrtype;
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uint32_t n_net;
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};
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struct hostent
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{
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char *h_name;
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char **h_aliases;
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int h_addrtype;
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int h_length;
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char **h_addr_list;
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};
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#define h_addr h_addr_list[0]
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struct servent
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{
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char *s_name;
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char **s_aliases;
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int s_port;
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char *s_proto;
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};
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struct protoent
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{
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char *p_name;
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char **p_aliases;
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int p_proto;
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};
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void sethostent (int);
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void endhostent (void);
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struct hostent *gethostent (void);
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void setnetent (int);
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void endnetent (void);
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struct netent *getnetent (void);
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struct netent *getnetbyaddr (uint32_t, int);
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struct netent *getnetbyname (const char *);
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void setservent (int);
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void endservent (void);
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struct servent *getservent (void);
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struct servent *getservbyname (const char *, const char *);
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struct servent *getservbyport (int, const char *);
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void setprotoent (int);
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void endprotoent (void);
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struct protoent *getprotoent (void);
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struct protoent *getprotobyname (const char *);
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struct protoent *getprotobynumber (int);
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_POSIX_SOURCE) \
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|| (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 < 200809L) \
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|| (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
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struct hostent *gethostbyname (const char *);
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struct hostent *gethostbyaddr (const void *, socklen_t, int);
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#ifdef __GNUC__
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__attribute__((const))
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#endif
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int *__h_errno_location(void);
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#define h_errno (*__h_errno_location())
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#define HOST_NOT_FOUND 1
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#define TRY_AGAIN 2
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#define NO_RECOVERY 3
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#define NO_DATA 4
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#define NO_ADDRESS NO_DATA
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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void herror(const char *);
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const char *hstrerror(int);
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int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
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int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
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struct hostent *gethostbyname2(const char *, int);
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int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *);
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int getservbyport_r(int, const char *, struct servent *, char *, size_t, struct servent **);
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int getservbyname_r(const char *, const char *, struct servent *, char *, size_t, struct servent **);
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#define EAI_NODATA -5
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#define EAI_ADDRFAMILY -9
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#define EAI_INPROGRESS -100
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#define EAI_CANCELED -101
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#define EAI_NOTCANCELED -102
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#define EAI_ALLDONE -103
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#define EAI_INTR -104
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#define EAI_IDN_ENCODE -105
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#define NI_MAXHOST 255
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#define NI_MAXSERV 32
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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