| 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. |
| 48e671d5 |
10 | */ |
| 11 | |
| 12 | #include "includes.h" |
| 13 | #include "ssh.h" |
| 14 | |
| 15 | #ifndef HAVE_GETNAMEINFO |
| 5daf7064 |
16 | int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, |
| 17 | size_t hostlen, char *serv, size_t servlen, int flags) |
| 48e671d5 |
18 | { |
| 5daf7064 |
19 | struct sockaddr_in *sin = (struct sockaddr_in *)sa; |
| 20 | struct hostent *hp; |
| 21 | char tmpserv[16]; |
| 22 | |
| 23 | if (serv) { |
| 24 | snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port)); |
| 6f2e751d |
25 | if (strlen(tmpserv) >= servlen) |
| 5daf7064 |
26 | return EAI_MEMORY; |
| 27 | else |
| 2c153a6c |
28 | strcpy(serv, tmpserv); |
| 48e671d5 |
29 | } |
| 5daf7064 |
30 | |
| 31 | if (host) { |
| 32 | if (flags & NI_NUMERICHOST) { |
| c5ae7384 |
33 | if (strlen(inet_ntoa(sin->sin_addr)) >= hostlen) |
| 5daf7064 |
34 | return EAI_MEMORY; |
| 35 | |
| 2c153a6c |
36 | strcpy(host, inet_ntoa(sin->sin_addr)); |
| 5daf7064 |
37 | return 0; |
| 38 | } else { |
| 39 | hp = gethostbyaddr((char *)&sin->sin_addr, |
| 40 | sizeof(struct in_addr), AF_INET); |
| 41 | if (hp == NULL) |
| 42 | return EAI_NODATA; |
| 43 | |
| c5ae7384 |
44 | if (strlen(hp->h_name) >= hostlen) |
| 5daf7064 |
45 | return EAI_MEMORY; |
| 46 | |
| 2c153a6c |
47 | strcpy(host, hp->h_name); |
| 5daf7064 |
48 | return 0; |
| 49 | } |
| 50 | } |
| 51 | return 0; |
| 48e671d5 |
52 | } |
| 53 | #endif /* !HAVE_GETNAMEINFO */ |
andersk / openssh.git / blame