66 lines
1.5 KiB
C
66 lines
1.5 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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#include "config.h"
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <string.h>
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#include <system.h>
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#include "fake-getnameinfo.h"
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#include "fake-getaddrinfo.h"
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#ifndef HAVE_GETNAMEINFO
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int getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
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size_t hostlen, char *serv, size_t servlen, 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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snprintf(tmpserv, sizeof(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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strcpy(host, inet_ntoa(sin->sin_addr));
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return 0;
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} else {
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hp = gethostbyaddr((char *)&sin->sin_addr,
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sizeof(struct in_addr), AF_INET);
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if (hp == NULL)
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return EAI_NODATA;
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if (strlen(hp->h_name) >= hostlen)
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return EAI_MEMORY;
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strcpy(host, hp->h_name);
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return 0;
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}
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}
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return 0;
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}
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#endif /* !HAVE_GETNAMEINFO */
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