diff options
Diffstat (limited to 'e-util/e-host-utils.c')
| -rw-r--r-- | e-util/e-host-utils.c | 185 |
1 files changed, 176 insertions, 9 deletions
diff --git a/e-util/e-host-utils.c b/e-util/e-host-utils.c index 1649d14ece..1e9fcbb14c 100644 --- a/e-util/e-host-utils.c +++ b/e-util/e-host-utils.c @@ -17,17 +17,27 @@ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * - * Author: Chris Toshok + * Author: Chris Toshok, Jeffrey Stedfast */ + +#ifdef HAVE_CONFIG_H #include <config.h> +#endif + #include <glib.h> -#include "e-host-utils.h" -#include <string.h> -#include <stdlib.h> + #include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <arpa/inet.h> #include <errno.h> +#include "e-host-utils.h" + + #if !defined (HAVE_GETHOSTBYNAME_R) || !defined (HAVE_GETHOSTBYADDR_R) G_LOCK_DEFINE_STATIC (gethost_mutex); #endif @@ -107,6 +117,44 @@ G_LOCK_DEFINE_STATIC (gethost_mutex); } \ } G_STMT_END + +#ifdef ENABLE_IPv6 +/* some helpful utils for IPv6 lookups */ +#define IPv6_BUFLEN_MIN (sizeof (char *) * 3) + +static int +ai_to_herr (int error) +{ + switch (error) { + case EAI_NONAME: + case EAI_FAIL: + return HOST_NOT_FOUND; + break; + case EAI_SERVICE: + return NO_DATA; + break; + case EAI_ADDRFAMILY: + return NO_ADDRESS; + break; + case EAI_NODATA: + return NO_DATA; + break; + case EAI_MEMORY: + return ENOMEM; + break; + case EAI_AGAIN: + return TRY_AGAIN; + break; + case EAI_SYSTEM: + return errno; + break; + default: + return NO_RECOVERY; + break; + } +} +#endif /* ENABLE_IPv6 */ + /** * e_gethostbyname_r: * @name: the host to resolve @@ -125,6 +173,61 @@ int e_gethostbyname_r (const char *name, struct hostent *host, char *buf, size_t buflen, int *herr) { +#ifdef ENABLE_IPv6 + struct addrinfo hints, *res; + int retval, len; + char *addr; + + memset (&hints, 0, sizeof (struct addrinfo)); + hints.ai_flags = AI_CANONNAME; + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = 0; + hints.ai_protocol = 0; + + if ((retval = getaddrinfo (name, NULL, &hints, &res)) != 0) { + *herr = ai_to_herr (retval); + return -1; + } + + len = strlen (res->ai_canonname); + if (buflen < IPv6_BUFLEN_MIN + len + 1 + res->ai_addrlen) + return ERANGE; + + /* h_name */ + strcpy (buf, res->ai_canonname); + host->h_name = buf; + buf += len; + + /* h_aliases */ + ((char **) buf)[0] = NULL; + host->h_aliases = (char **) buf; + buf += sizeof (char *); + + /* h_addrtype and h_length */ + host->h_length = res->ai_addrlen; + if (res->ai_family == PF_INET6) { + host->h_addrtype = AF_INET6; + + addr = (char *) &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr; + } else { + host->h_addrtype = AF_INET; + + addr = (char *) &((struct sockaddr_in *) res->ai_addr)->sin_addr; + } + + memcpy (buf, addr, host->h_length); + addr = buf; + buf += host->h_length; + + /* h_addr_list */ + ((char **) buf)[0] = addr; + ((char **) buf)[1] = NULL; + host->h_addr_list = (char **) buf; + + freeaddrinfo (res); + + return 0; +#else /* No support for IPv6 addresses */ #ifdef HAVE_GETHOSTBYNAME_R #ifdef GETHOSTBYNAME_R_FIVE_ARGS if (gethostbyname_r (name, host, buf, buflen, herr)) @@ -140,7 +243,7 @@ e_gethostbyname_r (const char *name, struct hostent *host, *herr = 0; return retval; #endif -#else +#else /* No support for gethostbyname_r */ struct hostent *h; G_LOCK (gethost_mutex); @@ -153,12 +256,13 @@ e_gethostbyname_r (const char *name, struct hostent *host, return -1; } - GETHOST_PROCESS (h, host,buf, buflen, herr); + GETHOST_PROCESS (h, host, buf, buflen, herr); G_UNLOCK (gethost_mutex); return 0; -#endif +#endif /* HAVE_GETHOSTBYNAME_R */ +#endif /* ENABLE_IPv6 */ } @@ -182,6 +286,68 @@ int e_gethostbyaddr_r (const char *addr, int len, int type, struct hostent *host, char *buf, size_t buflen, int *herr) { +#ifdef ENABLE_IPv6 + struct addrinfo hints, *res; + const char *name; + int retval, len; + + if ((name = inet_ntop (type, addr, buf, buflen)) == NULL) { + if (errno == ENOSPC) + return ERANGE; + + return -1; + } + + memset (&hints, 0, sizeof (struct addrinfo)); + hints.ai_flags = AI_CANONNAME; + hints.ai_family = type == AF_INET6 ? PF_INET6 : PF_INET; + hints.ai_socktype = 0; + hints.ai_protocol = 0; + + if ((retval = getaddrinfo (name, NULL, &hints, &res)) != 0) { + *herr = ai_to_herr (retval); + return -1; + } + + len = strlen (res->ai_canonname); + if (buflen < IPv6_BUFLEN_MIN + len + 1 + res->ai_addrlen) + return ERANGE; + + /* h_name */ + strcpy (buf, res->ai_canonname); + host->h_name = buf; + buf += len; + + /* h_aliases */ + ((char **) buf)[0] = NULL; + host->h_aliases = (char **) buf; + buf += sizeof (char *); + + /* h_addrtype and h_length */ + host->h_length = res->ai_addrlen; + if (res->ai_family == PF_INET6) { + host->h_addrtype = AF_INET6; + + addr = (char *) &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr; + } else { + host->h_addrtype = AF_INET; + + addr = (char *) &((struct sockaddr_in *) res->ai_addr)->sin_addr; + } + + memcpy (buf, addr, host->h_length); + addr = buf; + buf += host->h_length; + + /* h_addr_list */ + ((char **) buf)[0] = addr; + ((char **) buf)[1] = NULL; + host->h_addr_list = (char **) buf; + + freeaddrinfo (res); + + return 0; +#else /* No support for IPv6 addresses */ #ifdef HAVE_GETHOSTBYADDR_R #ifdef GETHOSTBYADDR_R_SEVEN_ARGS if (gethostbyaddr_r (addr, len, type, host, buf, buflen, herr)) @@ -197,7 +363,7 @@ e_gethostbyaddr_r (const char *addr, int len, int type, struct hostent *host, *herr = 0; return retval; #endif -#else +#else /* No support for gethostbyaddr_r */ struct hostent *h; G_LOCK (gethost_mutex); @@ -215,5 +381,6 @@ e_gethostbyaddr_r (const char *addr, int len, int type, struct hostent *host, G_UNLOCK (gethost_mutex); return 0; -#endif +#endif /* HAVE_GETHOSTBYADDR_R */ +#endif /* ENABLE_IPv6 */ } |