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62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/*
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* fake library for ssh
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*
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* This file includes getnameinfo().
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* These funtions are defined in rfc2133.
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*
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* But these functions are not implemented correctly. The minimum subset
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* is implemented for ssh use only. For exapmle, this routine assumes
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* that ai_family is AF_INET. Don't use it for another purpose.
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*
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* In the case not using 'configure --enable-ipv6', this getnameinfo.c
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* will be used if you have broken getnameinfo or no getnameinfo.
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*/
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#include "includes.h"
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#include "ssh.h"
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#ifndef HAVE_GETNAMEINFO
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int
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getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
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const struct sockaddr *sa;
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size_t salen;
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char *host;
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size_t hostlen;
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char *serv;
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size_t servlen;
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int flags;
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{
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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struct hostent *hp;
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char tmpserv[16];
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if (serv) {
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sprintf(tmpserv, "%d", ntohs(sin->sin_port));
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if (strlen(tmpserv) > servlen)
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return EAI_MEMORY;
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else
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strcpy(serv, tmpserv);
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}
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if (host)
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if (flags & NI_NUMERICHOST)
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if (strlen(inet_ntoa(sin->sin_addr)) > hostlen)
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return EAI_MEMORY;
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else {
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strcpy(host, inet_ntoa(sin->sin_addr));
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return 0;
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}
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else
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if (NULL != (hp = gethostbyaddr((char *)&sin->sin_addr,
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sizeof(struct in_addr), AF_INET)))
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if (strlen(hp->h_name) > hostlen)
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return EAI_MEMORY;
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else {
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strcpy(host, hp->h_name);
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return 0;
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}
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else
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return EAI_NODATA;
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return 0;
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}
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#endif /* !HAVE_GETNAMEINFO */
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