diff options
Diffstat (limited to 'fake-getnameinfo.c')
-rw-r--r-- | fake-getnameinfo.c | 76 |
1 files changed, 34 insertions, 42 deletions
diff --git a/fake-getnameinfo.c b/fake-getnameinfo.c index f74f3128f..867cf90b5 100644 --- a/fake-getnameinfo.c +++ b/fake-getnameinfo.c | |||
@@ -7,55 +7,47 @@ | |||
7 | * But these functions are not implemented correctly. The minimum subset | 7 | * But these functions are not implemented correctly. The minimum subset |
8 | * is implemented for ssh use only. For exapmle, this routine assumes | 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. | 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 | */ | 10 | */ |
14 | 11 | ||
15 | #include "includes.h" | 12 | #include "includes.h" |
16 | #include "ssh.h" | 13 | #include "ssh.h" |
17 | 14 | ||
18 | #ifndef HAVE_GETNAMEINFO | 15 | #ifndef HAVE_GETNAMEINFO |
19 | int | 16 | int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, |
20 | getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) | 17 | size_t hostlen, char *serv, size_t servlen, int 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 | { | 18 | { |
29 | struct sockaddr_in *sin = (struct sockaddr_in *)sa; | 19 | struct sockaddr_in *sin = (struct sockaddr_in *)sa; |
30 | struct hostent *hp; | 20 | struct hostent *hp; |
31 | char tmpserv[16]; | 21 | char tmpserv[16]; |
32 | 22 | ||
33 | if (serv) { | 23 | if (serv) { |
34 | sprintf(tmpserv, "%d", ntohs(sin->sin_port)); | 24 | snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port)); |
35 | if (strlen(tmpserv) > servlen) | 25 | if (strlen(tmpserv) > servlen) |
36 | return EAI_MEMORY; | 26 | return EAI_MEMORY; |
37 | else | 27 | else |
38 | strcpy(serv, tmpserv); | 28 | 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 (NULL != (hp = gethostbyaddr((char *)&sin->sin_addr, | ||
50 | sizeof(struct in_addr), 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 | } | 29 | } |
57 | else | 30 | |
58 | return EAI_NODATA; | 31 | if (host) { |
59 | return 0; | 32 | if (flags & NI_NUMERICHOST) { |
33 | if (strlen(inet_ntoa(sin->sin_addr)) > hostlen) | ||
34 | return EAI_MEMORY; | ||
35 | |||
36 | strcpy(host, inet_ntoa(sin->sin_addr)); | ||
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 | |||
44 | if (strlen(hp->h_name) > hostlen) | ||
45 | return EAI_MEMORY; | ||
46 | |||
47 | strcpy(host, hp->h_name); | ||
48 | return 0; | ||
49 | } | ||
50 | } | ||
51 | return 0; | ||
60 | } | 52 | } |
61 | #endif /* !HAVE_GETNAMEINFO */ | 53 | #endif /* !HAVE_GETNAMEINFO */ |