#include "list.h"
#include "fd.h"
+/* Whether the given address conforms to the IPv4 address format. */
+static inline bool is_valid_ipv4_address(const char *address)
+{
+ struct in_addr test_it;
+ return inet_pton(AF_INET, address, &test_it) != 0;
+}
+
/**
* Parse and validate IPv4 address/netmask string.
*
return NULL;
}
-
-/**
- * Match string as a candidate IPv4 address.
- *
- * \param address The string to match.
- * \return True if \a address has "dot-quad" format.
- */
static bool is_v4_dot_quad(const char *address)
{
bool result;
return result;
}
+/* Whether a string conforms to IPv6 address format (RFC 4291). */
+static inline bool is_valid_ipv6_address(const char *address)
+{
+ struct in6_addr test_it;
+ return inet_pton(AF_INET6, address, &test_it) != 0;
+}
+
/**
* Perform basic syntax checking on the host-part of an URL:
*
* \return In all cases the returned string is a allocated with malloc(3) and
* has to be freed by the caller.
*/
-char *format_url(const char *url, int default_port)
+__malloc char *format_url(const char *url, int default_port)
{
char host[MAX_HOSTLEN];
int url_port;
* \param transport Transport protocol name (e.g. "udp", "tcp"), or NULL.
* \return Pointer to static result buffer.
*
- * \sa getservent(3), services(5), nsswitch.conf(5).
+ * \sa getservbyport(3), services(5), nsswitch.conf(5).
*/
const char *stringify_port(int port, const char *transport)
{
return service;
}
-/**
- * Determine the socket type for a given layer-4 protocol.
- *
- * \param l4type The symbolic name of the transport-layer protocol.
- *
- * \sa ip(7), socket(2).
+#ifndef SOCK_DCCP
+#define SOCK_DCCP 6 /**< Linux socket type. */
+#endif
+
+/*
+ * Determine the socket type, given the symbolic name of the transport-layer
+ * protocol. See ip(7), socket(2).
*/
static inline int sock_type(const unsigned l4type)
{
return -1; /* not supported here */
}
-/**
- * Pretty-print transport-layer name.
- */
+/* Pretty-print transport-layer name. */
static const char *layer4_name(const unsigned l4type)
{
switch (l4type) {
struct list_head node; /**< FIFO, as sockopt order matters. */
};
-/** FIFO list of pre-connection socket options to be set */
+/**
+ * List of pre-connection socket options to be set.
+ *
+ * This list contains transport-layer independent encapsulation of socket
+ * options that need to be registered prior to setting up a connection.
+ */
struct flowopts {
struct list_head sockopts;
};
list_add_tail(&new->node, &fo->sockopts);
}
-/** Set the entire bunch of pre-connection options at once. */
+/* Set the entire bunch of pre-connection options at once. */
static void flowopt_setopts(int sockfd, struct flowopts *fo)
{
struct pre_conn_opt *pc;
if (ai)
freeaddrinfo(ai);
if (ret < 0) {
- PARA_ERROR_LOG("can not create %s socket %s#%d.\n",
+ PARA_NOTICE_LOG("can not create %s socket %s#%d.\n",
layer4_name(l4type), host? host : (passive?
"[loopback]" : "[localhost]"), port_number);
}
return para_listen(l4type, NULL, port);
}
-/**
- * Determine IPv4/v6 socket address length.
- * \param sa Container of IPv4 or IPv6 address.
- * \return Address-family dependent address length.
- */
+/* Compute the address-family dependent address length of an IPv4/v6 socket. */
static socklen_t salen(const struct sockaddr *sa)
{
assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
: sizeof(struct sockaddr_in);
}
-/** True if @ss holds a v6-mapped-v4 address (RFC 4291, 2.5.5.2) */
+/* True if ss holds a v6-mapped-v4 address (RFC 4291, 2.5.5.2) */
static bool SS_IS_ADDR_V4MAPPED(const struct sockaddr_storage *ss)
{
const struct sockaddr_in6 *ia6 = (const struct sockaddr_in6 *)ss;
return ss->ss_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&ia6->sin6_addr);
}
-/**
+/*
* Process IPv4/v6 address, turn v6-mapped-v4 address into normal IPv4 address.
- * \param ss Container of IPv4/6 address.
- * \return Pointer to normalized address (may be static storage).
+ * ss: Container of IPv4/6 address.
+ * Returns: Pointer to normalized address (may be static storage).
*
* \sa RFC 3493.
*/
return (const struct sockaddr *)ss;
}
-/**
+/*
* Generic/fallback MTU values
*
* These are taken from RFC 1122, RFC 2460, and RFC 5405.
return af_type == AF_INET6 ? 1280 : 576;
}
-/** Crude approximation of IP header overhead - neglecting options. */
+/* Crude approximation of IP header overhead - neglecting options. */
static inline int estimated_header_overhead(const int af_type)
{
return af_type == AF_INET6 ? 40 : 20;
* Wrapper around the accept system call.
*
* \param fd The listening socket.
- * \param rfds An optional fd_set pointer.
* \param addr Structure which is filled in with the address of the peer socket.
* \param size Should contain the size of the structure pointed to by \a addr.
* \param new_fd Result pointer.
*
- * Accept incoming connections on \a addr, retry if interrupted. If \a rfds is
- * not \p NULL, return 0 if \a fd is not set in \a rfds without calling accept().
+ * Accept incoming connections on addr, retry if interrupted.
*
* \return Negative on errors, zero if no connections are present to be accepted,
* one otherwise.
*
* \sa accept(2).
*/
-int para_accept(int fd, fd_set *rfds, void *addr, socklen_t size, int *new_fd)
+int para_accept(int fd, void *addr, socklen_t size, int *new_fd)
{
int ret;
- if (rfds && !FD_ISSET(fd, rfds))
- return 0;
do
ret = accept(fd, (struct sockaddr *) addr, &size);
while (ret < 0 && errno == EINTR);
return -ERRNO_TO_PARA_ERROR(errno);
}
+#ifndef DCCP_SOCKOPT_AVAILABLE_CCIDS
+#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12 /**< List of supported CCIDs. */
+#endif
+
/**
* Probe the list of DCCP CCIDs configured on this host.
* \param ccid_array Pointer to return statically allocated array in.
socklen_t nccids = sizeof(ccids);
int ret, fd;
- ret = fd = makesock(IPPROTO_DCCP, 1, NULL, 0, NULL);
+ ret = fd = makesock(IPPROTO_DCCP, true /* passive */, NULL, 0, NULL);
if (ret < 0)
return ret;
return nccids;
}
+/**
+ * The buffer size of the sun_path component of struct sockaddr_un.
+ *
+ * While glibc doesn't define UNIX_PATH_MAX, it documents it has being limited
+ * to 108 bytes. On NetBSD it is only 104 bytes though. We trust UNIX_PATH_MAX
+ * if it is defined and use the size of the ->sun_path member otherwise. This
+ * should be safe everywhere.
+ */
+#ifndef UNIX_PATH_MAX
+#define UNIX_PATH_MAX (sizeof(((struct sockaddr_un *)0)->sun_path))
+#endif
+
/*
* Prepare a structure for AF_UNIX socket addresses.
*
projects / paraslash.git / blobdiff