#include "asterisk/frame.h"
#include "asterisk/io.h"
#include "asterisk/sched.h"
#include "asterisk/channel.h"
#include <netinet/in.h>
Go to the source code of this file.
Data Structures | |
struct | ast_udptl_protocol |
Typedefs | |
typedef int(* | ast_udptl_callback )(struct ast_udptl *udptl, struct ast_frame *f, void *data) |
Enumerations | |
enum | { UDPTL_ERROR_CORRECTION_NONE, UDPTL_ERROR_CORRECTION_FEC, UDPTL_ERROR_CORRECTION_REDUNDANCY } |
Functions | |
int | ast_udptl_bridge (struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc) |
void | ast_udptl_destroy (struct ast_udptl *udptl) |
int | ast_udptl_fd (struct ast_udptl *udptl) |
void | ast_udptl_get_current_formats (struct ast_udptl *udptl, int *astFormats, int *nonAstFormats) |
int | ast_udptl_get_error_correction_scheme (struct ast_udptl *udptl) |
int | ast_udptl_get_far_max_datagram (struct ast_udptl *udptl) |
int | ast_udptl_get_local_max_datagram (struct ast_udptl *udptl) |
void | ast_udptl_get_peer (struct ast_udptl *udptl, struct sockaddr_in *them) |
void | ast_udptl_get_us (struct ast_udptl *udptl, struct sockaddr_in *us) |
void | ast_udptl_init (void) |
int | ast_udptl_lookup_code (struct ast_udptl *udptl, int isAstFormat, int code) |
struct ast_udptl * | ast_udptl_new (struct sched_context *sched, struct io_context *io, int callbackmode) |
struct ast_udptl * | ast_udptl_new_with_bindaddr (struct sched_context *sched, struct io_context *io, int callbackmode, struct in_addr in) |
void | ast_udptl_offered_from_local (struct ast_udptl *udptl, int local) |
int | ast_udptl_proto_register (struct ast_udptl_protocol *proto) |
void | ast_udptl_proto_unregister (struct ast_udptl_protocol *proto) |
struct ast_frame * | ast_udptl_read (struct ast_udptl *udptl) |
void | ast_udptl_reload (void) |
void | ast_udptl_reset (struct ast_udptl *udptl) |
void | ast_udptl_set_callback (struct ast_udptl *udptl, ast_udptl_callback callback) |
void | ast_udptl_set_data (struct ast_udptl *udptl, void *data) |
void | ast_udptl_set_error_correction_scheme (struct ast_udptl *udptl, int ec) |
void | ast_udptl_set_far_max_datagram (struct ast_udptl *udptl, int max_datagram) |
void | ast_udptl_set_local_max_datagram (struct ast_udptl *udptl, int max_datagram) |
void | ast_udptl_set_m_type (struct ast_udptl *udptl, int pt) |
void | ast_udptl_set_peer (struct ast_udptl *udptl, struct sockaddr_in *them) |
void | ast_udptl_set_udptlmap_type (struct ast_udptl *udptl, int pt, char *mimeType, char *mimeSubtype) |
void | ast_udptl_setnat (struct ast_udptl *udptl, int nat) |
int | ast_udptl_settos (struct ast_udptl *udptl, int tos) |
void | ast_udptl_stop (struct ast_udptl *udptl) |
int | ast_udptl_write (struct ast_udptl *udptl, struct ast_frame *f) |
typedef int(* ast_udptl_callback)(struct ast_udptl *udptl, struct ast_frame *f, void *data) |
anonymous enum |
UDPTL_ERROR_CORRECTION_NONE | |
UDPTL_ERROR_CORRECTION_FEC | |
UDPTL_ERROR_CORRECTION_REDUNDANCY |
Definition at line 28 of file udptl.h.
00029 { 00030 UDPTL_ERROR_CORRECTION_NONE, 00031 UDPTL_ERROR_CORRECTION_FEC, 00032 UDPTL_ERROR_CORRECTION_REDUNDANCY 00033 };
int ast_udptl_bridge | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1, | |||
int | flags, | |||
struct ast_frame ** | fo, | |||
struct ast_channel ** | rc | |||
) |
Definition at line 960 of file udptl.c.
References ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), AST_FRAME_MODEM, ast_frfree, ast_inet_ntoa(), ast_log(), ast_read(), ast_udptl_get_peer(), ast_waitfor_n(), ast_write(), f, ast_frame::frametype, get_proto(), ast_udptl_protocol::get_udptl_info, inaddrcmp(), LOG_DEBUG, LOG_WARNING, ast_channel::masq, ast_channel::masqr, ast_udptl_protocol::set_udptl_peer, and ast_channel::tech_pvt.
00961 { 00962 struct ast_frame *f; 00963 struct ast_channel *who; 00964 struct ast_channel *cs[3]; 00965 struct ast_udptl *p0; 00966 struct ast_udptl *p1; 00967 struct ast_udptl_protocol *pr0; 00968 struct ast_udptl_protocol *pr1; 00969 struct sockaddr_in ac0; 00970 struct sockaddr_in ac1; 00971 struct sockaddr_in t0; 00972 struct sockaddr_in t1; 00973 void *pvt0; 00974 void *pvt1; 00975 int to; 00976 00977 ast_channel_lock(c0); 00978 while (ast_channel_trylock(c1)) { 00979 ast_channel_unlock(c0); 00980 usleep(1); 00981 ast_channel_lock(c0); 00982 } 00983 pr0 = get_proto(c0); 00984 pr1 = get_proto(c1); 00985 if (!pr0) { 00986 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name); 00987 ast_channel_unlock(c0); 00988 ast_channel_unlock(c1); 00989 return -1; 00990 } 00991 if (!pr1) { 00992 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name); 00993 ast_channel_unlock(c0); 00994 ast_channel_unlock(c1); 00995 return -1; 00996 } 00997 pvt0 = c0->tech_pvt; 00998 pvt1 = c1->tech_pvt; 00999 p0 = pr0->get_udptl_info(c0); 01000 p1 = pr1->get_udptl_info(c1); 01001 if (!p0 || !p1) { 01002 /* Somebody doesn't want to play... */ 01003 ast_channel_unlock(c0); 01004 ast_channel_unlock(c1); 01005 return -2; 01006 } 01007 if (pr0->set_udptl_peer(c0, p1)) { 01008 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name); 01009 memset(&ac1, 0, sizeof(ac1)); 01010 } else { 01011 /* Store UDPTL peer */ 01012 ast_udptl_get_peer(p1, &ac1); 01013 } 01014 if (pr1->set_udptl_peer(c1, p0)) { 01015 ast_log(LOG_WARNING, "Channel '%s' failed to talk back to '%s'\n", c1->name, c0->name); 01016 memset(&ac0, 0, sizeof(ac0)); 01017 } else { 01018 /* Store UDPTL peer */ 01019 ast_udptl_get_peer(p0, &ac0); 01020 } 01021 ast_channel_unlock(c0); 01022 ast_channel_unlock(c1); 01023 cs[0] = c0; 01024 cs[1] = c1; 01025 cs[2] = NULL; 01026 for (;;) { 01027 if ((c0->tech_pvt != pvt0) || 01028 (c1->tech_pvt != pvt1) || 01029 (c0->masq || c0->masqr || c1->masq || c1->masqr)) { 01030 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n"); 01031 /* Tell it to try again later */ 01032 return -3; 01033 } 01034 to = -1; 01035 ast_udptl_get_peer(p1, &t1); 01036 ast_udptl_get_peer(p0, &t0); 01037 if (inaddrcmp(&t1, &ac1)) { 01038 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d\n", 01039 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port)); 01040 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d\n", 01041 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port)); 01042 memcpy(&ac1, &t1, sizeof(ac1)); 01043 } 01044 if (inaddrcmp(&t0, &ac0)) { 01045 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d\n", 01046 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port)); 01047 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d\n", 01048 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port)); 01049 memcpy(&ac0, &t0, sizeof(ac0)); 01050 } 01051 who = ast_waitfor_n(cs, 2, &to); 01052 if (!who) { 01053 ast_log(LOG_DEBUG, "Ooh, empty read...\n"); 01054 /* check for hangup / whentohangup */ 01055 if (ast_check_hangup(c0) || ast_check_hangup(c1)) 01056 break; 01057 continue; 01058 } 01059 f = ast_read(who); 01060 if (!f) { 01061 *fo = f; 01062 *rc = who; 01063 ast_log(LOG_DEBUG, "Oooh, got a %s\n", f ? "digit" : "hangup"); 01064 /* That's all we needed */ 01065 return 0; 01066 } else { 01067 if (f->frametype == AST_FRAME_MODEM) { 01068 /* Forward T.38 frames if they happen upon us */ 01069 if (who == c0) { 01070 ast_write(c1, f); 01071 } else if (who == c1) { 01072 ast_write(c0, f); 01073 } 01074 } 01075 ast_frfree(f); 01076 } 01077 /* Swap priority. Not that it's a big deal at this point */ 01078 cs[2] = cs[0]; 01079 cs[0] = cs[1]; 01080 cs[1] = cs[2]; 01081 } 01082 return -1; 01083 }
void ast_udptl_destroy | ( | struct ast_udptl * | udptl | ) |
Definition at line 860 of file udptl.c.
References ast_io_remove(), ast_udptl::fd, free, ast_udptl::io, and ast_udptl::ioid.
Referenced by __sip_destroy(), and create_addr_from_peer().
00861 { 00862 if (udptl->ioid) 00863 ast_io_remove(udptl->io, udptl->ioid); 00864 if (udptl->fd > -1) 00865 close(udptl->fd); 00866 free(udptl); 00867 }
int ast_udptl_fd | ( | struct ast_udptl * | udptl | ) |
Definition at line 586 of file udptl.c.
References ast_udptl::fd.
Referenced by __oh323_new(), and sip_new().
00587 { 00588 return udptl->fd; 00589 }
void ast_udptl_get_current_formats | ( | struct ast_udptl * | udptl, | |
int * | astFormats, | |||
int * | nonAstFormats | |||
) |
int ast_udptl_get_error_correction_scheme | ( | struct ast_udptl * | udptl | ) |
Definition at line 677 of file udptl.c.
References ast_log(), ast_udptl::error_correction_scheme, and LOG_WARNING.
Referenced by create_addr_from_peer(), sip_alloc(), and sip_handle_t38_reinvite().
00678 { 00679 if (udptl) 00680 return udptl->error_correction_scheme; 00681 else { 00682 ast_log(LOG_WARNING, "udptl structure is null\n"); 00683 return -1; 00684 } 00685 }
int ast_udptl_get_far_max_datagram | ( | struct ast_udptl * | udptl | ) |
Definition at line 717 of file udptl.c.
References ast_log(), ast_udptl::far_max_datagram_size, and LOG_WARNING.
00718 { 00719 if (udptl) 00720 return udptl->far_max_datagram_size; 00721 else { 00722 ast_log(LOG_WARNING, "udptl structure is null\n"); 00723 return -1; 00724 } 00725 }
int ast_udptl_get_local_max_datagram | ( | struct ast_udptl * | udptl | ) |
Definition at line 707 of file udptl.c.
References ast_log(), ast_udptl::local_max_datagram_size, and LOG_WARNING.
Referenced by add_t38_sdp(), and sip_handle_t38_reinvite().
00708 { 00709 if (udptl) 00710 return udptl->local_max_datagram_size; 00711 else { 00712 ast_log(LOG_WARNING, "udptl structure is null\n"); 00713 return -1; 00714 } 00715 }
void ast_udptl_get_peer | ( | struct ast_udptl * | udptl, | |
struct sockaddr_in * | them | |||
) |
Definition at line 841 of file udptl.c.
References ast_udptl::them.
Referenced by ast_udptl_bridge(), sip_handle_t38_reinvite(), and sip_set_udptl_peer().
00842 { 00843 memset(them, 0, sizeof(*them)); 00844 them->sin_family = AF_INET; 00845 them->sin_port = udptl->them.sin_port; 00846 them->sin_addr = udptl->them.sin_addr; 00847 }
void ast_udptl_get_us | ( | struct ast_udptl * | udptl, | |
struct sockaddr_in * | us | |||
) |
void ast_udptl_init | ( | void | ) |
Definition at line 1242 of file udptl.c.
References ast_cli_register_multiple(), and ast_udptl_reload().
Referenced by main().
01243 { 01244 ast_cli_register_multiple(cli_udptl, sizeof(cli_udptl) / sizeof(struct ast_cli_entry)); 01245 ast_udptl_reload(); 01246 }
int ast_udptl_lookup_code | ( | struct ast_udptl * | udptl, | |
int | isAstFormat, | |||
int | code | |||
) |
struct ast_udptl* ast_udptl_new | ( | struct sched_context * | sched, | |
struct io_context * | io, | |||
int | callbackmode | |||
) | [read] |
Definition at line 819 of file udptl.c.
References ast_udptl_new_with_bindaddr().
00820 { 00821 struct in_addr ia; 00822 memset(&ia, 0, sizeof(ia)); 00823 return ast_udptl_new_with_bindaddr(sched, io, callbackmode, ia); 00824 }
struct ast_udptl* ast_udptl_new_with_bindaddr | ( | struct sched_context * | sched, | |
struct io_context * | io, | |||
int | callbackmode, | |||
struct in_addr | in | |||
) | [read] |
Definition at line 743 of file udptl.c.
References ast_calloc, ast_io_add(), AST_IO_IN, ast_log(), ast_random(), udptl_fec_tx_buffer_t::buf_len, udptl_fec_rx_buffer_t::buf_len, errno, ast_udptl::error_correction_entries, ast_udptl::error_correction_scheme, ast_udptl::error_correction_span, ast_udptl::far_max_datagram_size, ast_udptl::fd, ast_udptl::flags, free, ast_udptl::io, ast_udptl::ioid, ast_udptl::local_max_datagram_size, LOG_WARNING, ast_udptl::rx, ast_udptl::sched, ast_udptl::them, ast_udptl::tx, UDPTL_BUF_MASK, UDPTL_ERROR_CORRECTION_FEC, UDPTL_ERROR_CORRECTION_NONE, UDPTL_ERROR_CORRECTION_REDUNDANCY, udptlread(), and ast_udptl::us.
Referenced by ast_udptl_new(), and sip_alloc().
00744 { 00745 struct ast_udptl *udptl; 00746 int x; 00747 int startplace; 00748 int i; 00749 long int flags; 00750 00751 if (!(udptl = ast_calloc(1, sizeof(*udptl)))) 00752 return NULL; 00753 00754 if (udptlfectype == 2) 00755 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_FEC; 00756 else if (udptlfectype == 1) 00757 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_REDUNDANCY; 00758 else 00759 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_NONE; 00760 udptl->error_correction_span = udptlfecspan; 00761 udptl->error_correction_entries = udptlfecentries; 00762 00763 udptl->far_max_datagram_size = udptlmaxdatagram; 00764 udptl->local_max_datagram_size = udptlmaxdatagram; 00765 00766 memset(&udptl->rx, 0, sizeof(udptl->rx)); 00767 memset(&udptl->tx, 0, sizeof(udptl->tx)); 00768 for (i = 0; i <= UDPTL_BUF_MASK; i++) { 00769 udptl->rx[i].buf_len = -1; 00770 udptl->tx[i].buf_len = -1; 00771 } 00772 00773 udptl->them.sin_family = AF_INET; 00774 udptl->us.sin_family = AF_INET; 00775 00776 if ((udptl->fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 00777 free(udptl); 00778 ast_log(LOG_WARNING, "Unable to allocate socket: %s\n", strerror(errno)); 00779 return NULL; 00780 } 00781 flags = fcntl(udptl->fd, F_GETFL); 00782 fcntl(udptl->fd, F_SETFL, flags | O_NONBLOCK); 00783 #ifdef SO_NO_CHECK 00784 if (nochecksums) 00785 setsockopt(udptl->fd, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums)); 00786 #endif 00787 /* Find us a place */ 00788 x = (ast_random() % (udptlend - udptlstart)) + udptlstart; 00789 startplace = x; 00790 for (;;) { 00791 udptl->us.sin_port = htons(x); 00792 udptl->us.sin_addr = addr; 00793 if (bind(udptl->fd, (struct sockaddr *) &udptl->us, sizeof(udptl->us)) == 0) 00794 break; 00795 if (errno != EADDRINUSE) { 00796 ast_log(LOG_WARNING, "Unexpected bind error: %s\n", strerror(errno)); 00797 close(udptl->fd); 00798 free(udptl); 00799 return NULL; 00800 } 00801 if (++x > udptlend) 00802 x = udptlstart; 00803 if (x == startplace) { 00804 ast_log(LOG_WARNING, "No UDPTL ports remaining\n"); 00805 close(udptl->fd); 00806 free(udptl); 00807 return NULL; 00808 } 00809 } 00810 if (io && sched && callbackmode) { 00811 /* Operate this one in a callback mode */ 00812 udptl->sched = sched; 00813 udptl->io = io; 00814 udptl->ioid = ast_io_add(udptl->io, udptl->fd, udptlread, AST_IO_IN, udptl); 00815 } 00816 return udptl; 00817 }
void ast_udptl_offered_from_local | ( | struct ast_udptl * | udptl, | |
int | local | |||
) |
Definition at line 669 of file udptl.c.
References ast_log(), LOG_WARNING, and ast_udptl::udptl_offered_from_local.
Referenced by transmit_invite(), transmit_reinvite_with_t38_sdp(), and transmit_response_with_t38_sdp().
00670 { 00671 if (udptl) 00672 udptl->udptl_offered_from_local = local; 00673 else 00674 ast_log(LOG_WARNING, "udptl structure is null\n"); 00675 }
int ast_udptl_proto_register | ( | struct ast_udptl_protocol * | proto | ) |
Definition at line 930 of file udptl.c.
References ast_log(), LOG_WARNING, ast_udptl_protocol::next, and ast_udptl_protocol::type.
Referenced by load_module().
00931 { 00932 struct ast_udptl_protocol *cur; 00933 00934 cur = protos; 00935 while (cur) { 00936 if (cur->type == proto->type) { 00937 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type); 00938 return -1; 00939 } 00940 cur = cur->next; 00941 } 00942 proto->next = protos; 00943 protos = proto; 00944 return 0; 00945 }
void ast_udptl_proto_unregister | ( | struct ast_udptl_protocol * | proto | ) |
Definition at line 910 of file udptl.c.
References ast_udptl_protocol::next.
Referenced by unload_module().
00911 { 00912 struct ast_udptl_protocol *cur; 00913 struct ast_udptl_protocol *prev; 00914 00915 cur = protos; 00916 prev = NULL; 00917 while (cur) { 00918 if (cur == proto) { 00919 if (prev) 00920 prev->next = proto->next; 00921 else 00922 protos = proto->next; 00923 return; 00924 } 00925 prev = cur; 00926 cur = cur->next; 00927 } 00928 }
Definition at line 618 of file udptl.c.
References ast_assert, AST_FRIENDLY_OFFSET, ast_inet_ntoa(), ast_log(), ast_null_frame, ast_verbose(), errno, ast_udptl::f, ast_udptl::fd, len, LOG_DEBUG, LOG_WARNING, ast_udptl::nat, ast_udptl::rawdata, ast_udptl::them, udptl_debug_test_addr(), and udptl_rx_packet().
Referenced by sip_rtp_read(), skinny_rtp_read(), and udptlread().
00619 { 00620 int res; 00621 struct sockaddr_in sin; 00622 socklen_t len; 00623 uint16_t seqno = 0; 00624 uint16_t *udptlheader; 00625 00626 len = sizeof(sin); 00627 00628 /* Cache where the header will go */ 00629 res = recvfrom(udptl->fd, 00630 udptl->rawdata + AST_FRIENDLY_OFFSET, 00631 sizeof(udptl->rawdata) - AST_FRIENDLY_OFFSET, 00632 0, 00633 (struct sockaddr *) &sin, 00634 &len); 00635 udptlheader = (uint16_t *)(udptl->rawdata + AST_FRIENDLY_OFFSET); 00636 if (res < 0) { 00637 if (errno != EAGAIN) 00638 ast_log(LOG_WARNING, "UDPTL read error: %s\n", strerror(errno)); 00639 ast_assert(errno != EBADF); 00640 return &ast_null_frame; 00641 } 00642 00643 /* Ignore if the other side hasn't been given an address yet. */ 00644 if (!udptl->them.sin_addr.s_addr || !udptl->them.sin_port) 00645 return &ast_null_frame; 00646 00647 if (udptl->nat) { 00648 /* Send to whoever sent to us */ 00649 if ((udptl->them.sin_addr.s_addr != sin.sin_addr.s_addr) || 00650 (udptl->them.sin_port != sin.sin_port)) { 00651 memcpy(&udptl->them, &sin, sizeof(udptl->them)); 00652 ast_log(LOG_DEBUG, "UDPTL NAT: Using address %s:%d\n", ast_inet_ntoa(udptl->them.sin_addr), ntohs(udptl->them.sin_port)); 00653 } 00654 } 00655 00656 if (udptl_debug_test_addr(&sin)) { 00657 ast_verbose("Got UDPTL packet from %s:%d (type %d, seq %d, len %d)\n", 00658 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), 0, seqno, res); 00659 } 00660 #if 0 00661 printf("Got UDPTL packet from %s:%d (seq %d, len = %d)\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), seqno, res); 00662 #endif 00663 if (udptl_rx_packet(udptl, udptl->rawdata + AST_FRIENDLY_OFFSET, res) < 1) 00664 return &ast_null_frame; 00665 00666 return &udptl->f[0]; 00667 }
void ast_udptl_reload | ( | void | ) |
Definition at line 1166 of file udptl.c.
References ast_config_destroy(), ast_config_load(), ast_false(), ast_log(), ast_variable_retrieve(), ast_verbose(), LOCAL_FAX_MAX_DATAGRAM, LOG_WARNING, MAX_FEC_ENTRIES, MAX_FEC_SPAN, option_verbose, s, and VERBOSE_PREFIX_2.
Referenced by ast_udptl_init().
01167 { 01168 struct ast_config *cfg; 01169 const char *s; 01170 01171 udptlstart = 4500; 01172 udptlend = 4999; 01173 udptlfectype = 0; 01174 udptlfecentries = 0; 01175 udptlfecspan = 0; 01176 udptlmaxdatagram = 0; 01177 01178 if ((cfg = ast_config_load("udptl.conf"))) { 01179 if ((s = ast_variable_retrieve(cfg, "general", "udptlstart"))) { 01180 udptlstart = atoi(s); 01181 if (udptlstart < 1024) 01182 udptlstart = 1024; 01183 if (udptlstart > 65535) 01184 udptlstart = 65535; 01185 } 01186 if ((s = ast_variable_retrieve(cfg, "general", "udptlend"))) { 01187 udptlend = atoi(s); 01188 if (udptlend < 1024) 01189 udptlend = 1024; 01190 if (udptlend > 65535) 01191 udptlend = 65535; 01192 } 01193 if ((s = ast_variable_retrieve(cfg, "general", "udptlchecksums"))) { 01194 #ifdef SO_NO_CHECK 01195 if (ast_false(s)) 01196 nochecksums = 1; 01197 else 01198 nochecksums = 0; 01199 #else 01200 if (ast_false(s)) 01201 ast_log(LOG_WARNING, "Disabling UDPTL checksums is not supported on this operating system!\n"); 01202 #endif 01203 } 01204 if ((s = ast_variable_retrieve(cfg, "general", "T38FaxUdpEC"))) { 01205 if (strcmp(s, "t38UDPFEC") == 0) 01206 udptlfectype = 2; 01207 else if (strcmp(s, "t38UDPRedundancy") == 0) 01208 udptlfectype = 1; 01209 } 01210 if ((s = ast_variable_retrieve(cfg, "general", "T38FaxMaxDatagram"))) { 01211 udptlmaxdatagram = atoi(s); 01212 if (udptlmaxdatagram < 0) 01213 udptlmaxdatagram = 0; 01214 if (udptlmaxdatagram > LOCAL_FAX_MAX_DATAGRAM) 01215 udptlmaxdatagram = LOCAL_FAX_MAX_DATAGRAM; 01216 } 01217 if ((s = ast_variable_retrieve(cfg, "general", "UDPTLFECentries"))) { 01218 udptlfecentries = atoi(s); 01219 if (udptlfecentries < 0) 01220 udptlfecentries = 0; 01221 if (udptlfecentries > MAX_FEC_ENTRIES) 01222 udptlfecentries = MAX_FEC_ENTRIES; 01223 } 01224 if ((s = ast_variable_retrieve(cfg, "general", "UDPTLFECspan"))) { 01225 udptlfecspan = atoi(s); 01226 if (udptlfecspan < 0) 01227 udptlfecspan = 0; 01228 if (udptlfecspan > MAX_FEC_SPAN) 01229 udptlfecspan = MAX_FEC_SPAN; 01230 } 01231 ast_config_destroy(cfg); 01232 } 01233 if (udptlstart >= udptlend) { 01234 ast_log(LOG_WARNING, "Unreasonable values for UDPTL start/end\n"); 01235 udptlstart = 4500; 01236 udptlend = 4999; 01237 } 01238 if (option_verbose > 1) 01239 ast_verbose(VERBOSE_PREFIX_2 "UDPTL allocating from port range %d -> %d\n", udptlstart, udptlend); 01240 }
void ast_udptl_reset | ( | struct ast_udptl * | udptl | ) |
void ast_udptl_set_callback | ( | struct ast_udptl * | udptl, | |
ast_udptl_callback | callback | |||
) |
Definition at line 596 of file udptl.c.
References ast_udptl::callback.
00597 { 00598 udptl->callback = callback; 00599 }
void ast_udptl_set_data | ( | struct ast_udptl * | udptl, | |
void * | data | |||
) |
Definition at line 591 of file udptl.c.
References ast_udptl::data.
00592 { 00593 udptl->data = data; 00594 }
void ast_udptl_set_error_correction_scheme | ( | struct ast_udptl * | udptl, | |
int | ec | |||
) |
Definition at line 687 of file udptl.c.
References ast_log(), ast_udptl::error_correction_scheme, LOG_WARNING, UDPTL_ERROR_CORRECTION_FEC, UDPTL_ERROR_CORRECTION_NONE, and UDPTL_ERROR_CORRECTION_REDUNDANCY.
Referenced by process_sdp(), and sip_handle_t38_reinvite().
00688 { 00689 if (udptl) { 00690 switch (ec) { 00691 case UDPTL_ERROR_CORRECTION_FEC: 00692 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_FEC; 00693 break; 00694 case UDPTL_ERROR_CORRECTION_REDUNDANCY: 00695 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_REDUNDANCY; 00696 break; 00697 case UDPTL_ERROR_CORRECTION_NONE: 00698 udptl->error_correction_scheme = UDPTL_ERROR_CORRECTION_NONE; 00699 break; 00700 default: 00701 ast_log(LOG_WARNING, "error correction parameter invalid\n"); 00702 }; 00703 } else 00704 ast_log(LOG_WARNING, "udptl structure is null\n"); 00705 }
void ast_udptl_set_far_max_datagram | ( | struct ast_udptl * | udptl, | |
int | max_datagram | |||
) |
Definition at line 735 of file udptl.c.
References ast_log(), ast_udptl::far_max_datagram_size, and LOG_WARNING.
Referenced by process_sdp(), and sip_handle_t38_reinvite().
00736 { 00737 if (udptl) 00738 udptl->far_max_datagram_size = max_datagram; 00739 else 00740 ast_log(LOG_WARNING, "udptl structure is null\n"); 00741 }
void ast_udptl_set_local_max_datagram | ( | struct ast_udptl * | udptl, | |
int | max_datagram | |||
) |
Definition at line 727 of file udptl.c.
References ast_log(), ast_udptl::local_max_datagram_size, and LOG_WARNING.
Referenced by process_sdp(), and sip_handle_t38_reinvite().
00728 { 00729 if (udptl) 00730 udptl->local_max_datagram_size = max_datagram; 00731 else 00732 ast_log(LOG_WARNING, "udptl structure is null\n"); 00733 }
void ast_udptl_set_m_type | ( | struct ast_udptl * | udptl, | |
int | pt | |||
) |
void ast_udptl_set_peer | ( | struct ast_udptl * | udptl, | |
struct sockaddr_in * | them | |||
) |
Definition at line 835 of file udptl.c.
References ast_udptl::them.
Referenced by process_sdp().
00836 { 00837 udptl->them.sin_port = them->sin_port; 00838 udptl->them.sin_addr = them->sin_addr; 00839 }
void ast_udptl_set_udptlmap_type | ( | struct ast_udptl * | udptl, | |
int | pt, | |||
char * | mimeType, | |||
char * | mimeSubtype | |||
) |
void ast_udptl_setnat | ( | struct ast_udptl * | udptl, | |
int | nat | |||
) |
int ast_udptl_settos | ( | struct ast_udptl * | udptl, | |
int | tos | |||
) |
Definition at line 826 of file udptl.c.
References ast_log(), ast_udptl::fd, and LOG_WARNING.
Referenced by sip_alloc().
00827 { 00828 int res; 00829 00830 if ((res = setsockopt(udptl->fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)))) 00831 ast_log(LOG_WARNING, "UDPTL unable to set TOS to %d\n", tos); 00832 return res; 00833 }
void ast_udptl_stop | ( | struct ast_udptl * | udptl | ) |
Definition at line 854 of file udptl.c.
References ast_udptl::them.
Referenced by process_sdp(), and stop_media_flows().
00855 { 00856 memset(&udptl->them.sin_addr, 0, sizeof(udptl->them.sin_addr)); 00857 memset(&udptl->them.sin_port, 0, sizeof(udptl->them.sin_port)); 00858 }
Definition at line 869 of file udptl.c.
References AST_FRAME_MODEM, ast_inet_ntoa(), ast_log(), ast_verbose(), ast_frame::data, ast_frame::datalen, errno, ast_udptl::fd, ast_frame::frametype, len, LOCAL_FAX_MAX_DATAGRAM, LOG_NOTICE, LOG_WARNING, seq, ast_udptl::them, ast_udptl::tx_seq_no, udptl_build_packet(), and udptl_debug_test_addr().
Referenced by sip_write().
00870 { 00871 int seq; 00872 int len; 00873 int res; 00874 uint8_t buf[LOCAL_FAX_MAX_DATAGRAM]; 00875 00876 /* If we have no peer, return immediately */ 00877 if (s->them.sin_addr.s_addr == INADDR_ANY) 00878 return 0; 00879 00880 /* If there is no data length, return immediately */ 00881 if (f->datalen == 0) 00882 return 0; 00883 00884 if (f->frametype != AST_FRAME_MODEM) { 00885 ast_log(LOG_WARNING, "UDPTL can only send T.38 data\n"); 00886 return -1; 00887 } 00888 00889 /* Save seq_no for debug output because udptl_build_packet increments it */ 00890 seq = s->tx_seq_no & 0xFFFF; 00891 00892 /* Cook up the UDPTL packet, with the relevant EC info. */ 00893 len = udptl_build_packet(s, buf, f->data, f->datalen); 00894 00895 if (len > 0 && s->them.sin_port && s->them.sin_addr.s_addr) { 00896 if ((res = sendto(s->fd, buf, len, 0, (struct sockaddr *) &s->them, sizeof(s->them))) < 0) 00897 ast_log(LOG_NOTICE, "UDPTL Transmission error to %s:%d: %s\n", ast_inet_ntoa(s->them.sin_addr), ntohs(s->them.sin_port), strerror(errno)); 00898 #if 0 00899 printf("Sent %d bytes of UDPTL data to %s:%d\n", res, ast_inet_ntoa(udptl->them.sin_addr), ntohs(udptl->them.sin_port)); 00900 #endif 00901 if (udptl_debug_test_addr(&s->them)) 00902 ast_verbose("Sent UDPTL packet to %s:%d (type %d, seq %d, len %d)\n", 00903 ast_inet_ntoa(s->them.sin_addr), 00904 ntohs(s->them.sin_port), 0, seq, len); 00905 } 00906 00907 return 0; 00908 }