| Damien Miller | 34132e5 | 2000-01-14 15:45:46 +1100 | [diff] [blame] | 1 | /* |
| 2 | * fake library for ssh |
| 3 | * |
| 4 | * This file includes getnameinfo(). |
| 5 | * These funtions are defined in rfc2133. |
| 6 | * |
| 7 | * But these functions are not implemented correctly. The minimum subset |
| 8 | * is implemented for ssh use only. For exapmle, this routine assumes |
| 9 | * that ai_family is AF_INET. Don't use it for another purpose. |
| 10 | * |
| 11 | * In the case not using 'configure --enable-ipv6', this getnameinfo.c |
| 12 | * will be used if you have broken getnameinfo or no getnameinfo. |
| 13 | */ |
| 14 | |
| 15 | #include "includes.h" |
| 16 | #include "ssh.h" |
| 17 | |
| 18 | #ifndef HAVE_GETNAMEINFO |
| 19 | int |
| 20 | getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) |
| 21 | const struct sockaddr *sa; |
| 22 | size_t salen; |
| 23 | char *host; |
| 24 | size_t hostlen; |
| 25 | char *serv; |
| 26 | size_t servlen; |
| 27 | int flags; |
| 28 | { |
| 29 | struct sockaddr_in *sin = (struct sockaddr_in *)sa; |
| 30 | struct hostent *hp; |
| 31 | char tmpserv[16]; |
| 32 | |
| 33 | if (serv) { |
| 34 | sprintf(tmpserv, "%d", ntohs(sin->sin_port)); |
| 35 | if (strlen(tmpserv) > servlen) |
| 36 | return EAI_MEMORY; |
| 37 | else |
| 38 | strcpy(serv, tmpserv); |
| 39 | } |
| 40 | if (host) |
| 41 | if (flags & NI_NUMERICHOST) |
| 42 | if (strlen(inet_ntoa(sin->sin_addr)) > hostlen) |
| 43 | return EAI_MEMORY; |
| 44 | else { |
| 45 | strcpy(host, inet_ntoa(sin->sin_addr)); |
| 46 | return 0; |
| 47 | } |
| 48 | else |
| 49 | if (hp = gethostbyaddr((char *)&sin->sin_addr, sizeof(struct in_addr), |
| 50 | AF_INET)) |
| 51 | if (strlen(hp->h_name) > hostlen) |
| 52 | return EAI_MEMORY; |
| 53 | else { |
| 54 | strcpy(host, hp->h_name); |
| 55 | return 0; |
| 56 | } |
| 57 | else |
| 58 | return EAI_NODATA; |
| 59 | return 0; |
| 60 | } |
| 61 | #endif /* !HAVE_GETNAMEINFO */ |