diff options
Diffstat (limited to 'fake-getnameinfo.c')
-rw-r--r-- | fake-getnameinfo.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/fake-getnameinfo.c b/fake-getnameinfo.c new file mode 100644 index 00000000..bf1184e2 --- /dev/null +++ b/fake-getnameinfo.c @@ -0,0 +1,61 @@ +/* + * fake library for ssh + * + * This file includes getnameinfo(). + * These funtions are defined in rfc2133. + * + * But these functions are not implemented correctly. The minimum subset + * is implemented for ssh use only. For exapmle, this routine assumes + * that ai_family is AF_INET. Don't use it for another purpose. + * + * In the case not using 'configure --enable-ipv6', this getnameinfo.c + * will be used if you have broken getnameinfo or no getnameinfo. + */ + +#include "includes.h" +#include "ssh.h" + +#ifndef HAVE_GETNAMEINFO +int +getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) +const struct sockaddr *sa; +size_t salen; +char *host; +size_t hostlen; +char *serv; +size_t servlen; +int flags; +{ + struct sockaddr_in *sin = (struct sockaddr_in *)sa; + struct hostent *hp; + char tmpserv[16]; + + if (serv) { + sprintf(tmpserv, "%d", ntohs(sin->sin_port)); + if (strlen(tmpserv) > servlen) + return EAI_MEMORY; + else + strcpy(serv, tmpserv); + } + if (host) + if (flags & NI_NUMERICHOST) + if (strlen(inet_ntoa(sin->sin_addr)) > hostlen) + return EAI_MEMORY; + else { + strcpy(host, inet_ntoa(sin->sin_addr)); + return 0; + } + else + if (hp = gethostbyaddr((char *)&sin->sin_addr, sizeof(struct in_addr), + AF_INET)) + if (strlen(hp->h_name) > hostlen) + return EAI_MEMORY; + else { + strcpy(host, hp->h_name); + return 0; + } + else + return EAI_NODATA; + return 0; +} +#endif /* !HAVE_GETNAMEINFO */ |