netsock.c File Reference

Network socket handling. More...

#include "asterisk.h"
#include <ifaddrs.h>
#include "include/netsock.h"
#include "asterisk/netsock2.h"
#include "asterisk/utils.h"
#include "include/astobj.h"

Include dependency graph for netsock.c:

Go to the source code of this file.

Data Structures
struct	ast_netsock
struct	ast_netsock_list

Functions
struct ast_netsock *	ast_netsock_bind (struct ast_netsock_list *list, struct io_context *ioc, const char *bindinfo, int defaultport, int tos, int cos, ast_io_cb callback, void *data)
struct ast_netsock *	ast_netsock_bindaddr (struct ast_netsock_list *list, struct io_context *ioc, struct ast_sockaddr *bindaddr, int tos, int cos, ast_io_cb callback, void *data)
const struct ast_sockaddr *	ast_netsock_boundaddr (const struct ast_netsock *ns)
void *	ast_netsock_data (const struct ast_netsock *ns)
static void	ast_netsock_destroy (struct ast_netsock *netsock)
struct ast_netsock *	ast_netsock_find (struct ast_netsock_list *list, struct ast_sockaddr *addr)
int	ast_netsock_init (struct ast_netsock_list *list)
struct ast_netsock_list *	ast_netsock_list_alloc (void)
int	ast_netsock_release (struct ast_netsock_list *list)
int	ast_netsock_set_qos (int sockfd, int tos, int cos, const char *desc)
int	ast_netsock_sockfd (const struct ast_netsock *ns)
void	ast_netsock_unref (struct ast_netsock *ns)

Detailed Description

Network socket handling.

Author

Kevin P. Fleming kpfle.nosp@m.ming.nosp@m.@digi.nosp@m.um.c.nosp@m.om

Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file netsock.c.

Function Documentation

ast_netsock_bind()

struct ast_netsock* ast_netsock_bind	(	struct ast_netsock_list *	list,
		struct io_context *	ioc,
		const char *	bindinfo,
		int	defaultport,
		int	tos,
		int	cos,
		ast_io_cb	callback,
		void *	data
	)

Definition at line 167 of file netsock.c.

References ast_netsock_bindaddr(), ast_sockaddr_parse(), ast_sockaddr_port, ast_sockaddr_set_port, and NULL.

Referenced by peer_set_srcaddr().

{
   struct ast_sockaddr addr;

   if (ast_sockaddr_parse(&addr, bindinfo, 0)) {

      if (!ast_sockaddr_port(&addr)) {
         ast_sockaddr_set_port(&addr, defaultport);
      }

      return ast_netsock_bindaddr(list, ioc, &addr, tos, cos, callback, data);
   }

   return NULL;
}

ast_netsock_bindaddr()

struct ast_netsock* ast_netsock_bindaddr	(	struct ast_netsock_list *	list,
		struct io_context *	ioc,
		struct ast_sockaddr *	bindaddr,
		int	tos,
		int	cos,
		ast_io_cb	callback,
		void *	data
	)

Definition at line 109 of file netsock.c.

References AST_AF_INET, AST_AF_INET6, ast_bind(), ast_calloc, ast_enable_packet_fragmentation(), ast_free, ast_io_add(), AST_IO_IN, ast_log, ast_set_qos(), ast_sockaddr_copy(), ast_sockaddr_is_ipv6(), ast_sockaddr_stringify(), ASTOBJ_CONTAINER_LINK, ASTOBJ_INIT, ast_netsock::bindaddr, ast_netsock::data, errno, ast_netsock::ioc, ast_netsock::ioref, LOG_ERROR, LOG_WARNING, netsocket, NULL, and ast_netsock::sockfd.

Referenced by ast_netsock_bind(), and set_config().

{
   int netsocket = -1;
   int *ioref;

   struct ast_netsock *ns;
   const int reuseFlag = 1;

   /* Make a UDP socket */
   netsocket = socket(ast_sockaddr_is_ipv6(bindaddr) ? AST_AF_INET6 : AST_AF_INET, SOCK_DGRAM, IPPROTO_IP);

   if (netsocket < 0) {
      ast_log(LOG_ERROR, "Unable to create network socket: %s\n", strerror(errno));
      return NULL;
   }
   if (setsockopt(netsocket, SOL_SOCKET, SO_REUSEADDR, (char *)&reuseFlag, sizeof reuseFlag) < 0) {
      ast_log(LOG_WARNING, "Error setting SO_REUSEADDR on sockfd '%d'\n", netsocket);
   }
   if (ast_bind(netsocket, bindaddr)) {
      ast_log(LOG_ERROR,
         "Unable to bind to %s: %s\n",
         ast_sockaddr_stringify(bindaddr),
         strerror(errno));
      close(netsocket);
      return NULL;
   }

   ast_set_qos(netsocket, tos, cos, "IAX2");

   ast_enable_packet_fragmentation(netsocket);

   if (!(ns = ast_calloc(1, sizeof(*ns)))) {
      close(netsocket);
      return NULL;
   }

   /* Establish I/O callback for socket read */
   if (!(ioref = ast_io_add(ioc, netsocket, callback, AST_IO_IN, ns))) {
      close(netsocket);
      ast_free(ns);
      return NULL;
   }
   ASTOBJ_INIT(ns);
   ns->ioref = ioref;
   ns->ioc = ioc;
   ns->sockfd = netsocket;
   ns->data = data;
   ast_sockaddr_copy(&ns->bindaddr, bindaddr);
   ASTOBJ_CONTAINER_LINK(list, ns);

   return ns;
}

ast_netsock_boundaddr()

const struct ast_sockaddr* ast_netsock_boundaddr

(

const struct ast_netsock *

ns

)

Definition at line 188 of file netsock.c.

References ast_netsock::bindaddr.

{
   return &ns->bindaddr;
}

ast_netsock_data()

void* ast_netsock_data

(

const struct ast_netsock *

ns

)

Definition at line 193 of file netsock.c.

References ast_netsock::data.

{
   return ns->data;
}

ast_netsock_destroy()

static void ast_netsock_destroy ( struct ast_netsock *  netsock )

static

Definition at line 65 of file netsock.c.

References ast_free, ast_io_remove(), ast_netsock::ioc, ast_netsock::ioref, and ast_netsock::sockfd.

Referenced by ast_netsock_release(), and ast_netsock_unref().

{
   ast_io_remove(netsock->ioc, netsock->ioref);
   close(netsock->sockfd);
   ast_free(netsock);
}

ast_netsock_find()

struct ast_netsock* ast_netsock_find	(	struct ast_netsock_list *	list,
		struct ast_sockaddr *	addr
	)

Definition at line 94 of file netsock.c.

References ast_sockaddr_cmp(), ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_RDLOCK, ASTOBJ_UNLOCK, and NULL.

Referenced by peer_set_srcaddr().

{
   struct ast_netsock *sock = NULL;

   ASTOBJ_CONTAINER_TRAVERSE(list, !sock, {
      ASTOBJ_RDLOCK(iterator);
      if (!ast_sockaddr_cmp(&iterator->bindaddr, addr)) {
         sock = iterator;
      }
      ASTOBJ_UNLOCK(iterator);
   });

   return sock;
}

ast_netsock_init()

int ast_netsock_init

(

struct ast_netsock_list *

list

)

Definition at line 77 of file netsock.c.

References ASTOBJ_CONTAINER_INIT.

Referenced by load_module(), and set_config().

{
   memset(list, 0, sizeof(*list));
   ASTOBJ_CONTAINER_INIT(list);

   return 0;
}

ast_netsock_list_alloc()

struct ast_netsock_list* ast_netsock_list_alloc

(

void

)

Definition at line 72 of file netsock.c.

References ast_calloc.

Referenced by load_module(), and set_config().

{
   return ast_calloc(1, sizeof(struct ast_netsock_list));
}

ast_netsock_release()

int ast_netsock_release

(

struct ast_netsock_list *

list

)

Definition at line 85 of file netsock.c.

References ast_free, ast_netsock_destroy(), ASTOBJ_CONTAINER_DESTROY, and ASTOBJ_CONTAINER_DESTROYALL.

Referenced by __unload_module(), and set_config().

{
   ASTOBJ_CONTAINER_DESTROYALL(list, ast_netsock_destroy);
   ASTOBJ_CONTAINER_DESTROY(list);
   ast_free(list);

   return 0;
}

ast_netsock_set_qos()

int ast_netsock_set_qos	(	int	sockfd,
		int	tos,
		int	cos,
		const char *	desc
	)

Deprecated:

Use ast_seq_qos in netsock2.h which properly handles IPv4 and IPv6 sockets, instead.

Definition at line 162 of file netsock.c.

References ast_set_qos().

{
   return ast_set_qos(sockfd, tos, cos, desc);
}

ast_netsock_sockfd()

int ast_netsock_sockfd

(

const struct ast_netsock *

ns

)

Definition at line 183 of file netsock.c.

References ast_netsock::sockfd.

Referenced by peer_set_srcaddr(), and set_config().

{
   return ns ? ns-> sockfd : -1;
}

ast_netsock_unref()

void ast_netsock_unref

(

struct ast_netsock *

ns

)

Definition at line 198 of file netsock.c.

References ast_netsock_destroy(), and ASTOBJ_UNREF.

Referenced by peer_set_srcaddr(), and set_config().

{
   ASTOBJ_UNREF(ns, ast_netsock_destroy);
}