-/*
- * Copyright (C) 2005-2010 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file send_common.c Functions used by more than one paraslash sender. */
+#include <netinet/in.h>
+#include <sys/socket.h>
#include <regex.h>
-#include <dirent.h>
#include <osl.h>
+#include <arpa/inet.h>
+#include <sys/un.h>
+#include <netdb.h>
+#include <lopsub.h>
#include "para.h"
#include "error.h"
#include "send.h"
#include "close_on_fork.h"
#include "chunk_queue.h"
+#include "sched.h"
#include "vss.h"
/** Clients will be kicked if there are more than that many bytes pending. */
#define MAX_CQ_BYTES 40000
-/**
- * Open a passive socket of given layer4 type.
- *
- * Set the resulting file descriptor to nonblocking mode and add it to the list
- * of fds that are being closed in the child process when the server calls
- * fork().
- *
- * \param l4type The transport-layer protocol.
- * \param port The port number.
- *
- * \return The listening fd on success, negative on errors.
- */
-static int open_sender(unsigned l4type, int port)
-{
- int fd, ret = para_listen_simple(l4type, port);
-
- if (ret < 0)
- return ret;
- fd = ret;
- ret = mark_fd_nonblocking(fd);
- if (ret < 0) {
- close(fd);
- return ret;
- }
- add_close_on_fork_list(fd);
- return fd;
-}
-
/**
* Shut down a client connected to a paraslash sender.
*
* list, destroy the chunk queue of this client, delete the client from the
* list of connected clients and free the sender_client struct.
*
- * \sa shutdown_clients().
+ * \sa \ref shutdown_clients().
*/
void shutdown_client(struct sender_client *sc, struct sender_status *ss)
{
int ret;
cq_get(qc, &buf, &len);
- ret = write_nonblock(fd, buf, len);
+ ret = xwrite(fd, buf, len);
if (ret < 0)
return ret;
cq_update(cq, ret);
* Initialize a struct sender status.
*
* \param ss The struct to initialize.
- * \param access_arg The array of access arguments given at the command line.
- * \param num_access_args The number of elements in \a access_arg.
+ * \param acl_opt_result Contains array of --{http|dccp}-access arguments.
* \param port The tcp or dccp port to listen on.
* \param max_clients The maximal number of simultaneous connections.
* \param default_deny Whether a blacklist should be used for access control.
*/
-void init_sender_status(struct sender_status *ss, char **access_arg,
- int num_access_args, int port, int max_clients, int default_deny)
+void init_sender_status(struct sender_status *ss,
+ const struct lls_opt_result *acl_opt_result, int port,
+ int max_clients, int default_deny)
{
+ int i;
+
ss->listen_fd = -1;
INIT_LIST_HEAD(&ss->client_list);
ss->port = port;
- acl_init(&ss->acl, access_arg, num_access_args);
+
+ /* Initialize an access control list */
+ INIT_LIST_HEAD(&ss->acl);
+ for (i = 0; i < lls_opt_given(acl_opt_result); i++) {
+ const char *arg = lls_string_val(i, acl_opt_result);
+ char addr[16];
+ int mask;
+ if (!parse_cidr(arg, addr, sizeof(addr), &mask))
+ PARA_WARNING_LOG("ACL syntax error: %s, ignoring\n",
+ arg);
+ else
+ acl_add_entry(&ss->acl, addr, mask);
+ }
ss->num_clients = 0;
ss->max_clients = max_clients;
ss->default_deny = default_deny;
*
* \return The string printed in the "si" command.
*/
-char *get_sender_info(struct sender_status *ss, const char *name)
+char *generic_sender_status(struct sender_status *ss, const char *name)
{
char *clnts = NULL, *ret;
struct sender_client *sc, *tmp_sc;
clnts = tmp;
}
ret = make_message(
- "%s sender:\n"
- "\tstatus: %s\n"
- "\tport: %s\n"
- "\tnumber of connected clients: %d\n"
- "\tmaximal number of clients: %d%s\n"
- "\tconnected clients: %s\n"
- "\taccess %s list: %s\n",
- name,
+ "status: %s\n"
+ "port: %s\n"
+ "number of connected clients: %d\n"
+ "maximal number of clients: %d%s\n"
+ "connected clients: %s\n"
+ "access %s list: %s\n",
(ss->listen_fd >= 0)? "on" : "off",
stringify_port(ss->port, strcmp(name, "http") ? "dccp" : "tcp"),
ss->num_clients,
* \param scd Contains the IP and the netmask.
* \param ss The sender.
*
- * \sa generic_com_deny().
+ * \sa \ref generic_com_deny().
*/
void generic_com_allow(struct sender_command_data *scd,
struct sender_status *ss)
* \param scd see \ref generic_com_allow().
* \param ss see \ref generic_com_allow().
*
- * \sa generic_com_allow().
+ * \sa \ref generic_com_allow().
*/
void generic_com_deny(struct sender_command_data *scd,
struct sender_status *ss)
*/
int generic_com_on(struct sender_status *ss, unsigned protocol)
{
- int ret;
+ int fd, ret;
if (ss->listen_fd >= 0)
return 1;
- ret = open_sender(protocol, ss->port);
+ ret = para_listen_simple(protocol, ss->port);
if (ret < 0)
return ret;
+ fd = ret;
+ ret = mark_fd_nonblocking(fd);
+ if (ret < 0) {
+ close(fd);
+ return ret;
+ }
+ add_close_on_fork_list(fd);
ss->listen_fd = ret;
return 1;
}
*
* \param ss The sender to deactivate.
*
- * \sa \ref del_close_on_fork_list(), shutdown_clients().
+ * \sa \ref del_close_on_fork_list(), \ref shutdown_clients().
*/
void generic_com_off(struct sender_status *ss)
{
* Accept a connection on the socket this server is listening on.
*
* \param ss The sender whose listening fd is ready for reading.
+ * \param rfds Passed to para_accept(),
*
- * This must be called only if the socket fd of \a ss is ready for reading. It
- * calls para_accept() to accept the connection and performs the following
- * actions on the resulting file descriptor \a fd:
+ * This calls para_accept() and performs the following actions on the resulting
+ * file descriptor fd:
*
* - Checks whether the maximal number of connections are exceeded.
* - Sets \a fd to nonblocking mode.
ss->num_clients++;
sc = para_calloc(sizeof(*sc));
sc->fd = fd;
- sc->name = make_message("%s", remote_name(fd));
+ sc->name = para_strdup(remote_name(fd));
sc->cq = cq_new(MAX_CQ_BYTES);
para_list_add(&sc->node, &ss->client_list);
add_close_on_fork_list(fd);
static int parse_fec_parms(const char *arg, struct sender_command_data *scd)
{
int32_t val;
- char *a = para_strdup(arg), *b = a, *e = strchr(b, ':');
+ char *a = para_strdup(arg),
+ *b = strchr(a, ':'),
+ *c = strrchr(a, ':');
int ret = -E_COMMAND_SYNTAX;
- /* parse max slice bytes */
- if (!e)
- goto out;
- *e = '\0';
- ret = para_atoi32(b, &val);
- if (ret < 0)
+ if (!b || !c)
goto out;
- ret = -ERRNO_TO_PARA_ERROR(EINVAL);
- if (val < 0 || val > 65535)
- goto out;
- scd->max_slice_bytes = val;
- /* parse data_slices_per_group */
- b = e + 1;
- e = strchr(b, ':');
- ret = -E_COMMAND_SYNTAX;
- if (!e)
- goto out;
- *e = '\0';
- ret = para_atoi32(b, &val);
+ *b = *c = '\0';
+
+ ret = para_atoi32(a, &val);
if (ret < 0)
goto out;
- ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+
+ /* optional max_slice_bytes (0 means "use MTU") */
+ if (b == c) {
+ scd->max_slice_bytes = 0;
+ } else {
+ if (val < 0 || val > 65535)
+ goto fec_einval;
+ scd->max_slice_bytes = val;
+
+ ret = para_atoi32(b + 1, &val);
+ if (ret < 0)
+ goto out;
+ }
+
+ /* k = data_slices_per_group */
if (val < 0 || val > 255)
- goto out;
+ goto fec_einval;
scd->data_slices_per_group = val;
- /* parse slices_per_group */
- b = e + 1;
- ret = para_atoi32(b, &val);
+
+ /* n = slices_per_group */
+ ret = para_atoi32(c + 1, &val);
if (ret < 0)
goto out;
- ret = -ERRNO_TO_PARA_ERROR(EINVAL);
if (val < 0 || val < scd->data_slices_per_group)
- goto out;
+ goto fec_einval;
scd->slices_per_group = val;
ret = 0;
out:
free(a);
return ret;
+fec_einval:
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+ goto out;
}
/**
*/
int parse_fec_url(const char *arg, struct sender_command_data *scd)
{
- int ret;
- ssize_t len = sizeof(scd->host);
char *a = para_strdup(arg), *p = strchr(a, '/');
+ int ret = 0;
+
+ /* default fec parameters */
+ scd->max_slice_bytes = 0;
+ scd->data_slices_per_group = 14;
+ scd->slices_per_group = 16;
if (p) {
*p = '\0';
- len = strlen(a);
- }
- ret = -ERRNO_TO_PARA_ERROR(EINVAL);
- if (!parse_url(a, scd->host, len, &scd->port))
- goto out;
- if (p) {
ret = parse_fec_parms(p + 1, scd);
- goto out;
+ if (ret < 0)
+ goto out;
}
- /* use default fec parameters. */
- scd->max_slice_bytes = 0;
- scd->slices_per_group = 16;
- scd->data_slices_per_group = 14;
- ret = 0;
+ if (!parse_url(a, scd->host, sizeof(scd->host), &scd->port))
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
out:
free(a);
return ret;
projects / paraslash.git / blobdiff