* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_charset.h>
#include <stddef.h> /* size_t */
#include <string.h> /* strlen(), memcpy(), memset(), strchr() */
#include <stdlib.h> /* malloc(), free(), strtoul() */
#include <errno.h>
+#include <assert.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#ifndef HAVE_GAI_STRERROR
-static struct
+static const struct
{
- int code;
- const char *msg;
-} const __gai_errlist[] =
+ int code;
+ const char msg[41];
+} gai_errlist[] =
{
{ 0, "Error 0" },
{ EAI_BADFLAGS, "Invalid flag used" },
{ EAI_MEMORY, "Memory allocation failure" },
{ EAI_OVERFLOW, "Buffer overflow" },
{ EAI_SYSTEM, "System error" },
- { 0, NULL }
+ { 0, "" },
};
-static const char *__gai_unknownerr = "Unrecognized error number";
+static const char gai_unknownerr[] = "Unrecognized error number";
/****************************************************************************
* Converts an EAI_* error code into human readable english text.
****************************************************************************/
const char *vlc_gai_strerror (int errnum)
{
- for (unsigned i = 0; __gai_errlist[i].msg != NULL; i++)
- if (errnum == __gai_errlist[i].code)
- return __gai_errlist[i].msg;
+ for (unsigned i = 0; *gai_errlist[i].msg; i++)
+ if (errnum == gai_errlist[i].code)
+ return gai_errlist[i].msg;
- return __gai_unknownerr;
+ return gai_unknownerr;
}
#else /* ifndef HAVE_GAI_STRERROR */
const char *vlc_gai_strerror (int errnum)
NI_DGRAM)
/*
* getnameinfo() non-thread-safe IPv4-only implementation,
- * Address-family-independant address to hostname translation
+ * Address-family-independent address to hostname translation
* (reverse DNS lookup in case of IPv4).
*
* This is meant for use on old IP-enabled systems that are not IPv6-aware,
*/
#ifdef WIN32
static int WSAAPI
-getnameinfo (const struct sockaddr *sa, socklen_t salen,
+stub_getnameinfo (const struct sockaddr *sa, socklen_t salen,
char *host, DWORD hostlen, char *serv, DWORD servlen, int flags)
#else
-static int
-getnameinfo (const struct sockaddr *sa, socklen_t salen,
+static int
+stub_getnameinfo (const struct sockaddr *sa, socklen_t salen,
char *host, int hostlen, char *serv, int servlen, int flags)
#endif
{
}
return 0;
}
-
+#undef getnameinfo
+#define getnameifo stub_getnameinfo
#endif /* if !HAVE_GETNAMEINFO */
#ifndef HAVE_GETADDRINFO
* This functions must be used to free the memory allocated by getaddrinfo().
*/
#ifdef WIN32
-static void WSAAPI freeaddrinfo (struct addrinfo *res)
+static void WSAAPI stub_freeaddrinfo (struct addrinfo *res)
#else
-static void freeaddrinfo (struct addrinfo *res)
+static void stub_freeaddrinfo (struct addrinfo *res)
#endif
{
- if (res != NULL)
- {
- if (res->ai_canonname != NULL)
- free (res->ai_canonname);
- if (res->ai_addr != NULL)
- free (res->ai_addr);
- if (res->ai_next != NULL)
- free (res->ai_next);
- free (res);
- }
+ if (res == NULL)
+ return;
+ free (res->ai_canonname);
+ free (res->ai_addr);
+ free (res->ai_next);
+ free (res);
}
/*
* getaddrinfo() non-thread-safe IPv4-only implementation
- * Address-family-independant hostname to address resolution.
+ * Address-family-independent hostname to address resolution.
*
* This is meant for IPv6-unaware systems that do probably not provide
* getaddrinfo(), but still have old function gethostbyname().
*/
#ifdef WIN32
static int WSAAPI
-getaddrinfo (const char *node, const char *service,
+stub_getaddrinfo (const char *node, const char *service,
const struct addrinfo *hints, struct addrinfo **res)
#else
static int
-getaddrinfo (const char *node, const char *service,
+stub_getaddrinfo (const char *node, const char *service,
const struct addrinfo *hints, struct addrinfo **res)
#endif
{
port = 0;
else
{
- long d;
+ unsigned long d;
char *end;
d = strtoul (service, &end, 0);
return 0;
}
+#undef getaddrinfo
+#define getaddrifo stub_getaddrinfo
+#undef freeaddrinfo
+#define freeaddrifo stub_freeaddrinfo
#endif /* if !HAVE_GETADDRINFO */
#if defined( WIN32 ) && !defined( UNDER_CE )
if (entry == NULL)
{
/* not found, use replacement API instead */
- entry = getnameinfo;
-
+ entry = stub_getnameinfo;
}
/* call API before replacing function pointer to avoid crash */
result = entry (sa, salen, host, hostlen, serv, servlen, flags);
if ((entry == NULL) || (freentry == NULL))
{
/* not found, use replacement API instead */
- entry = getaddrinfo;
- freentry = freeaddrinfo;
+ entry = stub_getaddrinfo;
+ freentry = stub_freeaddrinfo;
}
/* call API before replacing function pointer to avoid crash */
result = entry (node, service, hints, res);
#endif
-
int vlc_getnameinfo( const struct sockaddr *sa, int salen,
char *host, int hostlen, int *portnum, int flags )
{
return i_val;
}
+
+/**
+ * Resolves a host name to a list of socket addresses (like getaddrinfo()).
+ *
+ * @param p_this a VLC object
+ * @param node host name to resolve (encoded as UTF-8), or NULL
+ * @param i_port port number for the socket addresses
+ * @param p_hints parameters (see getaddrinfo() manual page)
+ * @param res pointer set to the resulting chained list.
+ * @return 0 on success, a getaddrinfo() error otherwise.
+ * On failure, *res is undefined. On success, it must be freed with
+ * vlc_freeaddrinfo().
+ */
int vlc_getaddrinfo( vlc_object_t *p_this, const char *node,
int i_port, const struct addrinfo *p_hints,
struct addrinfo **res )
{
struct addrinfo hints;
- char psz_buf[NI_MAXHOST], *psz_node, psz_service[6];
+ char psz_buf[NI_MAXHOST], psz_service[6];
/*
* In VLC, we always use port number as integer rather than strings
/* Check if we have to force ipv4 or ipv6 */
memset (&hints, 0, sizeof (hints));
- if( p_hints != NULL )
+ if (p_hints != NULL)
{
- int ai_flags = AI_NUMERICHOST|AI_PASSIVE;
- if( node )
- ai_flags |= AI_CANONNAME;
+ const int safe_flags =
+ AI_PASSIVE |
+ AI_CANONNAME |
+ AI_NUMERICHOST |
+ AI_NUMERICSERV |
+#ifdef AI_ALL
+ AI_ALL |
+#endif
+#ifdef AI_ADDRCONFIG
+ AI_ADDRCONFIG |
+#endif
+#ifdef AI_V4MAPPED
+ AI_V4MAPPED |
+#endif
+ 0;
+
hints.ai_family = p_hints->ai_family;
hints.ai_socktype = p_hints->ai_socktype;
hints.ai_protocol = p_hints->ai_protocol;
- hints.ai_flags = p_hints->ai_flags & (ai_flags);
+ /* Unfortunately, some flags chang the layout of struct addrinfo, so
+ * they cannot be copied blindly from p_hints to &hints. Therefore, we
+ * only copy flags that we know for sure are "safe".
+ */
+ hints.ai_flags = p_hints->ai_flags & safe_flags;
}
-#ifdef AI_NUMERICSERV
- /* we only ever use port *numbers* */
+
+ /* We only ever use port *numbers* */
hints.ai_flags |= AI_NUMERICSERV;
-#endif
if( hints.ai_family == AF_UNSPEC )
{
- vlc_value_t val;
-
- var_Create( p_this, "ipv4", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
- var_Get( p_this, "ipv4", &val );
- if( val.b_bool )
- hints.ai_family = AF_INET;
-
#ifdef AF_INET6
- var_Create( p_this, "ipv6", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
- var_Get( p_this, "ipv6", &val );
- if( val.b_bool )
+ if (var_CreateGetBool (p_this, "ipv6"))
hints.ai_family = AF_INET6;
+ else
#endif
+ if (var_CreateGetBool (p_this, "ipv4"))
+ hints.ai_family = AF_INET;
}
/*
* - accept "" as NULL
* - ignore square brackets
*/
- if( ( node == NULL ) || (node[0] == '\0' ) )
+ if (node != NULL)
{
- psz_node = NULL;
- hints.ai_flags &= ~AI_CANONNAME;
- }
- else
- {
- strlcpy( psz_buf, node, NI_MAXHOST );
-
- psz_node = psz_buf;
-
- if( psz_buf[0] == '[' )
+ if (node[0] == '[')
{
- char *ptr;
-
- ptr = strrchr( psz_buf, ']' );
- if( ( ptr != NULL ) && (ptr[1] == '\0' ) )
+ size_t len = strlen (node + 1);
+ if ((len <= sizeof (psz_buf)) && (node[len] == ']'))
{
- *ptr = '\0';
- psz_node++;
+ assert (len > 0);
+ memcpy (psz_buf, node + 1, len - 1);
+ psz_buf[len - 1] = '\0';
+ node = psz_buf;
}
}
+ if (node[0] == '\0')
+ node = NULL;
}
+ int ret;
+ node = ToLocale (node);
#ifdef WIN32
/*
* Winsock tries to resolve numerical IPv4 addresses as AAAA
if ((hints.ai_flags & AI_NUMERICHOST) == 0)
{
hints.ai_flags |= AI_NUMERICHOST;
-
- if (getaddrinfo (psz_node, psz_service, &hints, res) == 0)
- return 0;
-
+ ret = getaddrinfo (node, psz_service, &hints, res);
+ if (ret == 0)
+ goto out;
hints.ai_flags &= ~AI_NUMERICHOST;
}
#endif
-#if defined (HAVE_GETADDRINFO)
-# ifdef AI_IDN
+#ifdef AI_IDN
/* Run-time I18n Domain Names support */
- static vlc_bool_t b_idn = VLC_TRUE; /* beware of thread-safety */
-
- if (b_idn)
- {
- hints.ai_flags |= AI_IDN;
- int ret = getaddrinfo (psz_node, psz_service, &hints, res);
-
- if (ret != EAI_BADFLAGS)
- return ret;
-
- /* IDN not available: disable and retry without it */
- hints.ai_flags &= ~AI_IDN;
- b_idn = VLC_FALSE;
- msg_Info (p_this, "International Domain Names not supported");
- }
-# endif
- return getaddrinfo (psz_node, psz_service, &hints, res);
-#else
- int ret;
- vlc_value_t lock;
-
- var_Create (p_this->p_libvlc, "getaddrinfo_mutex", VLC_VAR_MUTEX);
- var_Get (p_this->p_libvlc, "getaddrinfo_mutex", &lock);
- vlc_mutex_lock (lock.p_address);
+ hints.ai_flags |= AI_IDN;
+ ret = getaddrinfo (node, psz_service, &hints, res);
+ if (ret != EAI_BADFLAGS)
+ goto out;
+ /* IDN not available: disable and retry without it */
+ hints.ai_flags &= ~AI_IDN;
+#endif
+ ret = getaddrinfo (node, psz_service, &hints, res);
- ret = getaddrinfo (psz_node, psz_service, &hints, res);
- vlc_mutex_unlock (lock.p_address);
+out:
+ LocaleFree (node);
return ret;
-#endif
}
{
freeaddrinfo (infos);
}
+
+/**
+ * inet_pton() replacement
+ */
+int vlc_inet_pton (int af, const char *src, void *dst)
+{
+#ifndef HAVE_INET_PTON
+ /* Windows Vista has inet_pton(), but not XP. */
+ /* We have a pretty good example of abstraction inversion here... */
+ struct addrinfo hints = {
+ .ai_family = af,
+ .ai_socktype = SOCK_DGRAM, /* make sure we have... */
+ .ai_protocol = IPPROTO_UDP, /* ...only one response */
+ .ai_flags = AI_NUMERICHOST,
+ }, *res;
+
+ if (getaddrinfo (src, NULL, &hints, &res))
+ return 0;
+
+ const void *data;
+ size_t len;
+
+ switch (af)
+ {
+ case AF_INET:
+ data = &((const struct sockaddr_in *)res->ai_addr)->sin_addr;
+ len = sizeof (struct in_addr);
+ break;
+#ifdef AF_INET6
+ case AF_INET6:
+ data = &((const struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
+ len = sizeof (struct in6_addr);
+ break;
+#endif
+ default:
+ freeaddrinfo (res);
+ return -1;
+ }
+ memcpy (dst, data, len);
+ freeaddrinfo (res);
+ return 1;
+#else /* HAVE_INET_PTON */
+ return inet_pton( af, src, dst );
+#endif /* HAVE_INET_PTON */
+}
+
+/**
+ * inet_ntop() replacement
+ */
+const char *vlc_inet_ntop (int af, const void *src, char *dst, socklen_t cnt)
+{
+#ifndef HAVE_INET_NTOP
+ int ret = EAI_FAMILY;
+
+ switch (af)
+ {
+#ifdef AF_INET6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 addr;
+ memset (&addr, 0, sizeof(addr));
+ addr.sin6_family = AF_INET6;
+ addr.sin6_addr = *(struct in6_addr *)src;
+ ret = getnameinfo ((struct sockaddr *)&addr, sizeof (addr),
+ dst, cnt, NULL, 0, NI_NUMERICHOST);
+ }
+
+#endif
+ case AF_INET:
+ {
+ struct sockaddr_in addr;
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_addr = *(struct in_addr *)src;
+ ret = getnameinfo ((struct sockaddr *)&addr, sizeof (addr),
+ dst, cnt, NULL, 0, NI_NUMERICHOST);
+ }
+ }
+ return (ret == 0) ? dst : NULL;
+#else /* HAVE_INET_NTOP */
+ return inet_ntop( af, src, dst, cnt );
+#endif /* HAVE_INET_NTOP */
+}
+
projects / vlc / blobdiff