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Commit | Line | Data |
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48e671d5 | 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 | |
18e92801 | 49 | if (NULL != (hp = gethostbyaddr((char *)&sin->sin_addr, |
50 | sizeof(struct in_addr), AF_INET))) | |
48e671d5 | 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 */ |