CallerID Generation support. More...

#include "asterisk.h"
#include <time.h>
#include <math.h>
#include <ctype.h>
#include "asterisk/ulaw.h"
#include "asterisk/alaw.h"
#include "asterisk/frame.h"
#include "asterisk/channel.h"
#include "asterisk/callerid.h"
#include "asterisk/fskmodem.h"
#include "asterisk/utils.h"

Include dependency graph for callerid.c:

Go to the source code of this file.

Data Structures
struct	ast_value_translation
struct	callerid_state
Defines
#define	AST_CALLERID_UNKNOWN "<unknown>"
#define	CALLERID_MARK 1200.0
#define	CALLERID_SPACE 2200.0
#define	CAS_FREQ1 2130.0
#define	CAS_FREQ2 2750.0
#define	SAS_FREQ 440.0
Functions
static int	__ast_callerid_generate (unsigned char buf, const char name, const char number, int callwaiting, struct ast_format codec)
int	ast_callerid_callwaiting_generate (unsigned char buf, const char name, const char number, struct ast_format codec)
	Generate Caller-ID spill but in a format suitable for Call Waiting(tm)'s Caller*ID(tm)
int	ast_callerid_generate (unsigned char buf, const char name, const char number, struct ast_format codec)
	Generate Caller-ID spill from the "callerid" field of asterisk (in e-mail address like format)
char *	ast_callerid_merge (char buf, int bufsiz, const char name, const char num, const char unknown)
int	ast_callerid_parse (char instr, char name, char *location)
	Destructively parse inbuf into name and location (or number)
int	ast_callerid_split (const char buf, char name, int namelen, char *num, int numlen)
int	ast_callerid_vmwi_generate (unsigned char buf, int active, int type, struct ast_format codec, const char name, const char number, int flags)
	Generate message waiting indicator.
const char *	ast_connected_line_source_describe (int data)
	Convert connected line update source value to explanatory string.
const char *	ast_connected_line_source_name (int data)
	Convert connected line update source value to text code.
int	ast_connected_line_source_parse (const char *data)
	Convert connected line update source text code to value (used in config file parsing)
const char *	ast_describe_caller_presentation (int data)
	Convert caller ID pres value to explanatory string.
int	ast_gen_cas (unsigned char outbuf, int sendsas, int len, struct ast_format codec)
	Generate a CAS (CPE Alert Signal) tone for 'n' samples.
int	ast_is_shrinkable_phonenumber (const char *exten)
	Check if a string consists only of digits and and + # ( ) - . (meaning it can be cleaned with ast_shrink_phone_number)
static int	ast_is_valid_string (const char exten, const char valid)
	Checks if phone number consists of valid characters.
int	ast_isphonenumber (const char *n)
	Check if a string consists only of digits and + #.
const char *	ast_named_caller_presentation (int data)
	Convert caller ID pres value to text code.
int	ast_parse_caller_presentation (const char *data)
	Convert caller ID text code to value (used in config file parsing)
const char *	ast_party_name_charset_describe (int data)
	Convert ast_party_name.char_set value to explanatory string.
int	ast_party_name_charset_parse (const char *data)
	Convert ast_party_name.char_set text code to value (used in config file parsing)
const char *	ast_party_name_charset_str (int data)
	Convert ast_party_name.char_set value to text code.
const char *	ast_redirecting_reason_describe (int data)
	Convert redirecting reason value to explanatory string.
const char *	ast_redirecting_reason_name (int data)
	Convert redirecting reason value to text code.
int	ast_redirecting_reason_parse (const char *data)
	Convert redirecting reason text code to value (used in config file parsing)
void	ast_shrink_phone_number (char *n)
	Clean up phone string.
static unsigned short	calc_crc (unsigned short crc, unsigned char data)
int	callerid_feed (struct callerid_state cid, unsigned char ubuf, int len, struct ast_format *codec)
	Read samples into the state machine.
int	callerid_feed_jp (struct callerid_state cid, unsigned char ubuf, int len, struct ast_format *codec)
	Read samples into the state machine.
void	callerid_free (struct callerid_state *cid)
	This function frees callerid_state cid.
int	callerid_generate (unsigned char buf, const char number, const char name, int flags, int callwaiting, struct ast_format codec)
	Generates a CallerID FSK stream in ulaw format suitable for transmission.
static int	callerid_genmsg (char msg, int size, const char number, const char *name, int flags)
void	callerid_get (struct callerid_state cid, char name, char number, int flags)
	Extract info out of callerID state machine. Flags are listed above.
void	callerid_get_dtmf (char cidstring, char number, int *flags)
	Get and parse DTMF-based callerid.
void	callerid_init (void)
	Initialize stuff for inverse FFT.
struct callerid_state *	callerid_new (int cid_signalling)
	Create a callerID state machine.
static void	gen_tone (unsigned char buf, int len, struct ast_format codec, float ddr1, float ddi1, float cr1, float ci1)
static void	gen_tones (unsigned char buf, int len, struct ast_format codec, float ddr1, float ddi1, float ddr2, float ddi2, float cr1, float ci1, float cr2, float ci2)
Variables
float	casdi1
float	casdi2
float	casdr1
float	casdr2
float	cid_di [4]
float	cid_dr [4]
float	clidsb = 8000.0 / 1200.0
static struct ast_value_translation	connected_line_source_types []
	Translation table for connected line update source settings.
static struct ast_value_translation	party_name_charset_tbl []
	Translation table for ast_party_name char-set settings.
static struct ast_value_translation	pres_types []
	Translation table for Caller ID Presentation settings.
static struct ast_value_translation	redirecting_reason_types []
	Translation table for redirecting reason settings.
float	sasdi
float	sasdr

Detailed Description

CallerID Generation support.

Author:: Mark Spencer <markster@digium.com>

Definition in file callerid.c.

Define Documentation

#define AST_CALLERID_UNKNOWN "<unknown>"

Definition at line 76 of file callerid.c.

#define CALLERID_MARK 1200.0

1200 hz for "1"

Definition at line 71 of file callerid.c.

Referenced by callerid_init().

#define CALLERID_SPACE 2200.0

2200 hz for "0"

Definition at line 70 of file callerid.c.

Referenced by callerid_init().

#define CAS_FREQ1 2130.0

Definition at line 73 of file callerid.c.

Referenced by callerid_init().

#define CAS_FREQ2 2750.0

Definition at line 74 of file callerid.c.

Referenced by callerid_init().

#define SAS_FREQ 440.0

Definition at line 72 of file callerid.c.

Referenced by callerid_init().

Function Documentation

static int __ast_callerid_generate	(	unsigned char *	buf,
		const char *	name,
		const char *	number,
		int	callwaiting,
		struct ast_format *	codec
	)		`[static]`

Definition at line 1058 of file callerid.c.

References ast_strlen_zero(), and callerid_generate().

Referenced by ast_callerid_callwaiting_generate(), and ast_callerid_generate().

{
   if (ast_strlen_zero(name))
      name = NULL;
   if (ast_strlen_zero(number))
      number = NULL;
   return callerid_generate(buf, number, name, 0, callwaiting, codec);
}

int ast_callerid_callwaiting_generate	(	unsigned char *	buf,
		const char *	name,
		const char *	number,
		struct ast_format *	codec
	)

Generate Caller-ID spill but in a format suitable for Call Waiting(tm)'s Caller*ID(tm)

See also:: ast_callerid_generate() for other details

Definition at line 1072 of file callerid.c.

References __ast_callerid_generate().

Referenced by my_send_callerid(), and send_cwcidspill().

{
   return __ast_callerid_generate(buf, name, number, 1, codec);
}

int ast_callerid_generate	(	unsigned char *	buf,
		const char *	name,
		const char *	number,
		struct ast_format *	codec
	)

Generate Caller-ID spill from the "callerid" field of asterisk (in e-mail address like format)

Parameters:

buf	buffer for output samples. See callerid_generate() for details regarding buffer.
name	Caller-ID Name
number	Caller-ID Number
codec	Asterisk codec (either AST_FORMAT_ALAW or AST_FORMAT_ULAW)

Acts like callerid_generate except uses an asterisk format callerid string.

Definition at line 1067 of file callerid.c.

References __ast_callerid_generate().

Referenced by my_send_callerid().

{
   return __ast_callerid_generate(buf, name, number, 0, codec);
}

char* ast_callerid_merge	(	char *	buf,
		int	bufsiz,
		const char *	name,
		const char *	num,
		const char *	unknown
	)

Definition at line 1077 of file callerid.c.

References ast_copy_string().

Referenced by _sip_show_peer(), _skinny_show_line(), handle_cli_iax2_show_peer(), launch_monitor_thread(), leave_voicemail(), prep_email_sub_vars(), set_one_cid(), and sip_show_user().

{
   if (!unknown)
      unknown = "<unknown>";
   if (name && num)
      snprintf(buf, bufsiz, "\"%s\" <%s>", name, num);
   else if (name)
      ast_copy_string(buf, name, bufsiz);
   else if (num)
      ast_copy_string(buf, num, bufsiz);
   else
      ast_copy_string(buf, unknown, bufsiz);
   return buf;
}

int ast_callerid_parse	(	char *	instr,
		char **	name,
		char **	location
	)

Destructively parse inbuf into name and location (or number)

Parses callerid stream from inbuf and changes into useable form, outputed in name and location.

Parameters:

instr	buffer of callerid stream (in audio form) to be parsed. Warning, data in buffer is changed.
name	address of a pointer-to-char for the name value of the stream.
location	address of a pointer-to-char for the phone number value of the stream.

Note:: XXX 'name' is not parsed consistently e.g. we have input location name " foo bar " <123> 123 ' foo bar ' (with spaces around) " foo bar " NULL 'foo bar' (without spaces around) The parsing of leading and trailing space/quotes should be more consistent.

Returns:: Returns 0 on success, -1 on failure.

Definition at line 1009 of file callerid.c.

References ast_copy_string(), ast_isphonenumber(), ast_shrink_phone_number(), ast_skip_blanks(), and ast_trim_blanks().

Referenced by action_originate(), adsi_message(), advanced_options(), ast_callerid_split(), ast_privacy_check(), ast_privacy_set(), dial_exec_full(), handle_setcallerid(), misdn_new(), play_message_callerid(), read_config(), sip_msg_send(), and unistim_new().

{
   char *ns, *ne, *ls, *le;

   /* Try "name" <location> format or name <location> format */
   if ((ls = strrchr(instr, '<')) && (le = strrchr(ls, '>'))) {
      *ls = *le = '\0'; /* location found, trim off the brackets */
      *location = ls + 1;  /* and this is the result */
      if ((ns = strchr(instr, '"')) && (ne = strchr(ns + 1, '"'))) {
         *ns = *ne = '\0'; /* trim off the quotes */
         *name = ns + 1;      /* and this is the name */
      } else if (ns) {
         /* An opening quote was found but no closing quote was. The closing
          * quote may actually be after the end of the bracketed number
          */
         if (strchr(le + 1, '\"')) {
            *ns = '\0';
            *name = ns + 1;
            ast_trim_blanks(*name);
         } else {
            *name = NULL;
         }
      } else { /* no quotes, trim off leading and trailing spaces */
         *name = ast_skip_blanks(instr);
         ast_trim_blanks(*name);
      }
   } else { /* no valid brackets */
      char tmp[256];

      ast_copy_string(tmp, instr, sizeof(tmp));
      ast_shrink_phone_number(tmp);
      if (ast_isphonenumber(tmp)) { /* Assume it's just a location */
         *name = NULL;
         strcpy(instr, tmp); /* safe, because tmp will always be the same size or smaller than instr */
         *location = instr;
      } else { /* Assume it's just a name. */
         *location = NULL;
         if ((ns = strchr(instr, '"')) && (ne = strchr(ns + 1, '"'))) {
            *ns = *ne = '\0'; /* trim off the quotes */
            *name = ns + 1;      /* and this is the name */
         } else { /* no quotes, trim off leading and trailing spaces */
            *name = ast_skip_blanks(instr);
            ast_trim_blanks(*name);
         }
      }
   }
   return 0;
}

int ast_callerid_split	(	const char *	buf,
		char *	name,
		int	namelen,
		char *	num,
		int	numlen
	)

Definition at line 1092 of file callerid.c.

References ast_callerid_parse(), ast_copy_string(), and ast_shrink_phone_number().

Referenced by apply_outgoing(), build_gateway(), build_peer(), build_user(), callerid_read(), config_parse_variables(), disa_exec(), load_module(), party_id_write(), prep_email_sub_vars(), process_dahdi(), store_callerid(), and update_common_options().

{
   char *tmp;
   char *l = NULL, *n = NULL;

   tmp = ast_strdupa(buf);
   ast_callerid_parse(tmp, &n, &l);
   if (n)
      ast_copy_string(name, n, namelen);
   else
      name[0] = '\0';
   if (l) {
      ast_shrink_phone_number(l);
      ast_copy_string(num, l, numlen);
   } else
      num[0] = '\0';
   return 0;
}

int ast_callerid_vmwi_generate	(	unsigned char *	buf,
		int	active,
		int	type,
		struct ast_format *	codec,
		const char *	name,
		const char *	number,
		int	flags
	)

Generate message waiting indicator.

Parameters:

buf
active	The message indicator state -- either 0 no messages in mailbox or 1 messages in mailbox
type	Format of message (any of CID_MWI_TYPE_*)
codec
name
number
flags

See also:: callerid_generate() for more info as it uses the same encoding

Version:: 1.6.1 changed mdmf parameter to type, added name, number and flags for caller id message generation

Definition at line 811 of file callerid.c.

References callerid_genmsg(), CID_MWI_TYPE_MDMF, CID_MWI_TYPE_MDMF_FULL, len(), PUT_BYTE, PUT_CLID, and PUT_CLID_MARKMS.

Referenced by mwi_send_init().

{
   char msg[256];
   int len = 0;
   int sum;
   int x;
   int bytes = 0;
   float cr = 1.0;
   float ci = 0.0;
   float scont = 0.0;

   if (type == CID_MWI_TYPE_MDMF_FULL) {
      /* MDMF Message waiting with date, number, name and MWI parameter */
      msg[0] = 0x82;

      /* put date, number info at the right place */
      len = callerid_genmsg(msg+2, sizeof(msg)-2, number, name, flags);

      /* length of MDMF CLI plus Message Waiting Structure */
      msg[1] = len+3;

      /* Go to the position to write to */
      len = len+2;

      /* "Message Waiting Parameter" */
      msg[len++] = 0x0b;
      /* Length of IE is one */
      msg[len++] = 1;
      /* Active or not */
      if (active)
         msg[len++] = 0xff;
      else
         msg[len++] = 0x00;

   } else if (type == CID_MWI_TYPE_MDMF) {
      /* MDMF Message waiting only */
      /* same as above except that the we only put MWI parameter */
      msg[len++] = 0x82;
      /* Length is 3 */
      msg[len++] = 3;
      /* IE is "Message Waiting Parameter" */
      msg[len++] = 0x0b;
      /* Length of IE is one */
      msg[len++] = 1;
      /* Active or not */
      if (active)
         msg[len++] = 0xff;
      else
         msg[len++] = 0x00;
   } else {
      /* SDMF Message waiting */
      msg[len++] = 0x6;
      /* Length is 3 */
      msg[len++] = 3;
      if (active) {
         msg[len++] = 0x42;
         msg[len++] = 0x42;
         msg[len++] = 0x42;
      } else {
         msg[len++] = 0x6f;
         msg[len++] = 0x6f;
         msg[len++] = 0x6f;
      }
   }
   sum = 0;
   for (x = 0; x < len; x++)
      sum += msg[x];
   sum = (256 - (sum & 255));
   msg[len++] = sum;
   /* Wait a half a second */
   for (x = 0; x < 4000; x++)
      PUT_BYTE(0x7f);
   /* Transmit 30 0x55's (looks like a square wave) for channel seizure */
   for (x = 0; x < 30; x++)
      PUT_CLID(0x55);
   /* Send 170ms of callerid marks */
   for (x = 0; x < 170; x++)
      PUT_CLID_MARKMS;
   for (x = 0; x < len; x++) {
      PUT_CLID(msg[x]);
   }
   /* Send 50 more ms of marks */
   for (x = 0; x < 50; x++)
      PUT_CLID_MARKMS;
   return bytes;
}

const char* ast_connected_line_source_describe ( int data )

Convert connected line update source value to explanatory string.

Since:: 1.8

Parameters:

data	AST_CONNECTED_LINE_UPDATE_SOURCE from callerid.h

Returns:: string for human presentation

Definition at line 1278 of file callerid.c.

References ARRAY_LEN, ast_value_translation::description, and value.

{
   int index;

   for (index = 0; index < ARRAY_LEN(connected_line_source_types); ++index) {
      if (connected_line_source_types[index].value == data) {
         return connected_line_source_types[index].description;
      }
   }

   return "not-known";
}

const char* ast_connected_line_source_name ( int data )

Convert connected line update source value to text code.

Since:: 1.8

Parameters:

data	AST_CONNECTED_LINE_UPDATE_SOURCE from callerid.h

Returns:: string for config file

Definition at line 1291 of file callerid.c.

References ARRAY_LEN, ast_value_translation::name, and value.

Referenced by connectedline_read().

{
   int index;

   for (index = 0; index < ARRAY_LEN(connected_line_source_types); ++index) {
      if (connected_line_source_types[index].value == data) {
         return connected_line_source_types[index].name;
      }
   }

   return "not-known";
}

int ast_connected_line_source_parse ( const char * data )

Convert connected line update source text code to value (used in config file parsing)

Since:: 1.8

Parameters:

data	text string from config file

Return values:

AST_CONNECTED_LINE_UPDATE_SOURCE	from callerid.h
-1	if not in table

Definition at line 1265 of file callerid.c.

References ARRAY_LEN, name, and ast_value_translation::value.

Referenced by connectedline_write().

{
   int index;

   for (index = 0; index < ARRAY_LEN(connected_line_source_types); ++index) {
      if (!strcasecmp(connected_line_source_types[index].name, data)) {
         return connected_line_source_types[index].value;
      }
   }

   return -1;
}

const char* ast_describe_caller_presentation ( int data )

Convert caller ID pres value to explanatory string.

Parameters:

data	AST_PRES_ value from callerid.h

Returns:: string for human presentation

Definition at line 1164 of file callerid.c.

References ARRAY_LEN, ast_value_translation::description, and value.

Referenced by _sip_show_peer(), peers_data_provider_get(), report_new_callerid(), sig_pri_event_party_id(), and sip_show_user().

{
   int index;

   for (index = 0; index < ARRAY_LEN(pres_types); ++index) {
      if (pres_types[index].value == data) {
         return pres_types[index].description;
      }
   }

   return "unknown";
}

int ast_gen_cas	(	unsigned char *	outbuf,
		int	sas,
		int	len,
		struct ast_format *	codec
	)

Generate a CAS (CPE Alert Signal) tone for 'n' samples.

Parameters:

outbuf	Allocated buffer for data. Must be at least 2400 bytes unless no SAS is desired
sas	Non-zero if CAS should be preceeded by SAS
len	How many samples to generate.
codec	Which codec (AST_FORMAT_ALAW or AST_FORMAT_ULAW)

Returns:: Returns -1 on error (if len is less than 2400), 0 on success.

Definition at line 262 of file callerid.c.

References gen_tone(), gen_tones(), and callerid_state::pos.

Referenced by __adsi_transmit_messages(), dahdi_callwait(), and my_callwait().

{
   int pos = 0;
   int saslen = 2400;
   float cr1 = 1.0;
   float ci1 = 0.0;
   float cr2 = 1.0;
   float ci2 = 0.0;

   if (sendsas) {
      if (len < saslen)
         return -1;
      gen_tone(outbuf, saslen, codec, sasdr, sasdi, &cr1, &ci1);
      len -= saslen;
      pos += saslen;
      cr2 = cr1;
      ci2 = ci1;
   }
   gen_tones(outbuf + pos, len, codec, casdr1, casdi1, casdr2, casdi2, &cr1, &ci1, &cr2, &ci2);
   return 0;
}

int ast_is_shrinkable_phonenumber ( const char * exten )

Check if a string consists only of digits and and + # ( ) - . (meaning it can be cleaned with ast_shrink_phone_number)

Parameters:

exten The extension (or URI) to be checked.

Return values:

1	if string is valid AST shrinkable phone number
0	if not

Definition at line 1004 of file callerid.c.

References ast_is_valid_string().

Referenced by check_peer_ok(), check_user_full(), get_pai(), and get_rpid().

{
   return ast_is_valid_string(exten, "0123456789*#+()-.");
}

static int ast_is_valid_string	(	const char *	exten,
		const char *	valid
	)		`[static]`

Checks if phone number consists of valid characters.

Parameters:

exten	String that needs to be checked
valid	Valid characters in string

Return values:

1	if valid string
0	if string contains invalid characters

Definition at line 987 of file callerid.c.

References ast_strlen_zero().

Referenced by ast_is_shrinkable_phonenumber(), and ast_isphonenumber().

{
   int x;

   if (ast_strlen_zero(exten))
      return 0;
   for (x = 0; exten[x]; x++)
      if (!strchr(valid, exten[x]))
         return 0;
   return 1;
}

int ast_isphonenumber ( const char * n )

Check if a string consists only of digits and + #.

Parameters:

n	number to be checked.

Returns:: Returns 0 if n is a number, 1 if it's not.

Definition at line 999 of file callerid.c.

References ast_is_valid_string().

Referenced by ast_callerid_parse().

{
   return ast_is_valid_string(n, "0123456789*#+");
}

const char* ast_named_caller_presentation ( int data )

Convert caller ID pres value to text code.

Parameters:

data	AST_PRES_ value from callerid.h

Returns:: string for config file

Definition at line 1182 of file callerid.c.

References ARRAY_LEN, ast_value_translation::name, and value.

Referenced by callerpres_read(), party_id_read(), party_name_read(), party_number_read(), and redirecting_read().

{
   int index;

   for (index = 0; index < ARRAY_LEN(pres_types); ++index) {
      if (pres_types[index].value == data) {
         return pres_types[index].name;
      }
   }

   return "unknown";
}

int ast_parse_caller_presentation ( const char * data )

Convert caller ID text code to value (used in config file parsing)

Parameters:

data	text string from config file

Return values:

value	AST_PRES_ from callerid.h
-1	if not in table

Definition at line 1143 of file callerid.c.

References ARRAY_LEN, name, and ast_value_translation::value.

Referenced by build_peer(), callerpres_write(), dial_exec_full(), party_id_write(), party_name_write(), party_number_write(), redirecting_write(), and setcallerid_pres_exec().

{
   int index;
   if (!data) {
      return -1;
   }

   for (index = 0; index < ARRAY_LEN(pres_types); ++index) {
      if (!strcasecmp(pres_types[index].name, data)) {
         return pres_types[index].value;
      }
   }

   return -1;
}

const char* ast_party_name_charset_describe ( int data )

Convert ast_party_name.char_set value to explanatory string.

Since:: 1.8

Parameters:

data	AST_PARTY_CHAR_SET from channel.h

Returns:: string for human presentation

Definition at line 1333 of file callerid.c.

References ARRAY_LEN, ast_value_translation::description, and value.

Referenced by sig_pri_event_party_id().

{
   int index;

   for (index = 0; index < ARRAY_LEN(party_name_charset_tbl); ++index) {
      if (party_name_charset_tbl[index].value == data) {
         return party_name_charset_tbl[index].description;
      }
   }

   return "not-known";
}

int ast_party_name_charset_parse ( const char * data )

Convert ast_party_name.char_set text code to value (used in config file parsing)

Since:: 1.8

Parameters:

data	text string from config file

Return values:

AST_PARTY_CHAR_SET	from channel.h
-1	if not in table

Definition at line 1320 of file callerid.c.

References ARRAY_LEN, name, and ast_value_translation::value.

Referenced by party_name_write().

{
   int index;

   for (index = 0; index < ARRAY_LEN(party_name_charset_tbl); ++index) {
      if (!strcasecmp(party_name_charset_tbl[index].name, data)) {
         return party_name_charset_tbl[index].value;
      }
   }

   return -1;
}

const char* ast_party_name_charset_str ( int data )

Convert ast_party_name.char_set value to text code.

Since:: 1.8

Parameters:

data	AST_PARTY_CHAR_SET from channel.h

Returns:: string for config file

Definition at line 1346 of file callerid.c.

References ARRAY_LEN, ast_value_translation::name, and value.

Referenced by party_name_read().

{
   int index;

   for (index = 0; index < ARRAY_LEN(party_name_charset_tbl); ++index) {
      if (party_name_charset_tbl[index].value == data) {
         return party_name_charset_tbl[index].name;
      }
   }

   return "not-known";
}

const char* ast_redirecting_reason_describe ( int data )

Convert redirecting reason value to explanatory string.

Since:: 1.8

Parameters:

data	Q931_REDIRECTING_REASON from callerid.h

Returns:: string for human presentation

Definition at line 1227 of file callerid.c.

References ARRAY_LEN, ast_value_translation::description, and value.

{
   int index;

   for (index = 0; index < ARRAY_LEN(redirecting_reason_types); ++index) {
      if (redirecting_reason_types[index].value == data) {
         return redirecting_reason_types[index].description;
      }
   }

   return "not-known";
}

const char* ast_redirecting_reason_name ( int data )

Convert redirecting reason value to text code.

Since:: 1.8

Parameters:

data	Q931_REDIRECTING_REASON from callerid.h

Returns:: string for config file

Definition at line 1240 of file callerid.c.

References ARRAY_LEN, ast_value_translation::name, and value.

Referenced by redirecting_read().

{
   int index;

   for (index = 0; index < ARRAY_LEN(redirecting_reason_types); ++index) {
      if (redirecting_reason_types[index].value == data) {
         return redirecting_reason_types[index].name;
      }
   }

   return "not-known";
}

int ast_redirecting_reason_parse ( const char * data )

Convert redirecting reason text code to value (used in config file parsing)

Since:: 1.8

Parameters:

data	text string from config file

Return values:

Q931_REDIRECTING_REASON	from callerid.h
-1	if not in table

Definition at line 1214 of file callerid.c.

References ARRAY_LEN, name, and ast_value_translation::value.

Referenced by redirecting_write().

{
   int index;

   for (index = 0; index < ARRAY_LEN(redirecting_reason_types); ++index) {
      if (!strcasecmp(redirecting_reason_types[index].name, data)) {
         return redirecting_reason_types[index].value;
      }
   }

   return -1;
}

void ast_shrink_phone_number ( char * n )

Clean up phone string.

Shrink a phone number in place to just digits (more accurately it just removes ()'s, .'s, and -'s...

Remove '(', ' ', ')', non-trailing '.', and '-' not in square brackets. Basically, remove anything that could be invalid in a pattern.

Definition at line 948 of file callerid.c.

Referenced by __analog_ss_thread(), action_originate(), analog_ss_thread(), ast_callerid_parse(), ast_callerid_split(), ast_privacy_check(), ast_privacy_set(), check_access(), check_peer_ok(), check_user_full(), get_pai(), get_rpid(), handle_setcallerid(), pbx_load_config(), pri_dchannel(), setup_privacy_args(), and write_metadata().

{
   int x, y = 0;
   int bracketed = 0;

   for (x = 0; n[x]; x++) {
      switch (n[x]) {
      case '[':
         bracketed++;
         n[y++] = n[x];
         break;
      case ']':
         bracketed--;
         n[y++] = n[x];
         break;
      case '-':
         if (bracketed)
            n[y++] = n[x];
         break;
      case '.':
         if (!n[x+1])
            n[y++] = n[x];
         break;
      default:
         /* ignore parenthesis and whitespace */
         if (!strchr("( )", n[x]))
            n[y++] = n[x];
      }
   }
   n[y] = '\0';
}

static unsigned short calc_crc	(	unsigned short	crc,
		unsigned char	data
	)		`[static]`

Definition at line 284 of file callerid.c.

References callerid_state::crc, and org.

Referenced by callerid_feed_jp().

{
   unsigned int i, j, org, dst;
   org = data;
   dst = 0;

   for (i = 0; i < CHAR_BIT; i++) {
      org <<= 1;
      dst >>= 1;
      if (org & 0x100)
         dst |= 0x80;
   }
   data = (unsigned char) dst;
   crc ^= (unsigned int) data << (16 - CHAR_BIT);
   for (j = 0; j < CHAR_BIT; j++) {
      if (crc & 0x8000U)
         crc = (crc << 1) ^ 0x1021U ;
      else
         crc <<= 1 ;
   }
   return crc;
}

int callerid_feed	(	struct callerid_state *	cid,
		unsigned char *	ubuf,
		int	samples,
		struct ast_format *	codec
	)

Read samples into the state machine.

Parameters:

cid	Which state machine to act upon
ubuf	containing your samples
samples	number of samples contained within the buffer.
codec	which codec (AST_FORMAT_ALAW or AST_FORMAT_ULAW)

Send received audio to the Caller*ID demodulator.

Return values:

-1	on error
0	for "needs more samples"
1	if the CallerID spill reception is complete.

Definition at line 546 of file callerid.c.

References ast_alloca, ast_copy_string(), ast_log(), ast_strlen_zero(), AST_XLAW, CID_MSGWAITING, CID_NOMSGWAITING, CID_PRIVATE_NAME, CID_PRIVATE_NUMBER, CID_UNKNOWN_NAME, CID_UNKNOWN_NUMBER, callerid_state::cksum, callerid_state::flags, fsk_serial(), callerid_state::fskd, callerid_state::len, len(), LOG_ERROR, LOG_NOTICE, LOG_WARNING, callerid_state::name, callerid_state::number, callerid_state::oldlen, callerid_state::oldstuff, callerid_state::pos, callerid_state::rawdata, callerid_state::sawflag, and callerid_state::type.

Referenced by analog_ss_thread(), mwi_thread(), and my_get_callerid().

{
   int mylen = len;
   int olen;
   int b = 'X';
   int res;
   int x;
   short *buf;

   buf = ast_alloca(2 * len + cid->oldlen);

   memcpy(buf, cid->oldstuff, cid->oldlen);
   mylen += cid->oldlen/2;

   for (x = 0; x < len; x++)
      buf[x+cid->oldlen/2] = AST_XLAW(ubuf[x]);
   while (mylen >= 160) {
      olen = mylen;
      res = fsk_serial(&cid->fskd, buf, &mylen, &b);
      if (mylen < 0) {
         ast_log(LOG_ERROR, "No start bit found in fsk data.\n");
         return -1;
      }
      buf += (olen - mylen);
      if (res < 0) {
         ast_log(LOG_NOTICE, "fsk_serial failed\n");
         return -1;
      }
      if (res == 1) {
         if (b > 0xff) {
            if (cid->sawflag != 5) {
               /* Ignore invalid bytes */
               continue;
            }
            /*
             * We can tollerate an error on the checksum character since the
             * checksum character is the last character in the message and
             * it validates the message.
             *
             * Remove character error flags.
             * Bit 8 : Parity error
             * Bit 9 : Framing error
             */
            b &= 0xff;
         }
         switch (cid->sawflag) {
         case 0: /* Look for flag */
            if (b == 'U')
               cid->sawflag = 2;
            break;
         case 2: /* Get lead-in */
            if ((b == 0x04) || (b == 0x80) || (b == 0x06) || (b == 0x82)) {
               cid->type = b;
               cid->sawflag = 3;
               cid->cksum = b;
            }
            break;
         case 3:  /* Get length */
            /* Not a lead in.  We're ready  */
            cid->sawflag = 4;
            cid->len = b;
            cid->pos = 0;
            cid->cksum += b;
            break;
         case 4: /* Retrieve message */
            if (cid->pos >= 128) {
               ast_log(LOG_WARNING, "Caller ID too long???\n");
               return -1;
            }
            cid->rawdata[cid->pos++] = b;
            cid->len--;
            cid->cksum += b;
            if (!cid->len) {
               cid->rawdata[cid->pos] = '\0';
               cid->sawflag = 5;
            }
            break;
         case 5: /* Check checksum */
            if ((b + cid->cksum) & 0xff) {
               ast_log(LOG_NOTICE, "Caller*ID failed checksum\n");
               /* Try again */
               cid->sawflag = 0;
               break;
            }

            cid->number[0] = '\0';
            cid->name[0] = '\0';
            /* Update flags */
            cid->flags = 0;
            /* If we get this far we're fine.  */
            if ((cid->type == 0x80) || (cid->type == 0x82)) {
               /* MDMF */
               /* Go through each element and process */
               for (x = 0; x < cid->pos;) {
                  switch (cid->rawdata[x++]) {
                  case 1:
                     /* Date */
                     break;
                  case 2: /* Number */
                  case 3: /* Number (for Zebble) */
                  case 4: /* Number */
                     res = cid->rawdata[x];
                     if (res > 32) {
                        ast_log(LOG_NOTICE, "Truncating long caller ID number from %d bytes to 32\n", cid->rawdata[x]);
                        res = 32;
                     }
                     if (ast_strlen_zero(cid->number)) {
                        memcpy(cid->number, cid->rawdata + x + 1, res);
                        /* Null terminate */
                        cid->number[res] = '\0';
                     }
                     break;
                  case 6: /* Stentor Call Qualifier (ie. Long Distance call) */
                     break;
                  case 7: /* Name */
                  case 8: /* Name */
                     res = cid->rawdata[x];
                     if (res > 32) {
                        ast_log(LOG_NOTICE, "Truncating long caller ID name from %d bytes to 32\n", cid->rawdata[x]);
                        res = 32;
                     }
                     memcpy(cid->name, cid->rawdata + x + 1, res);
                     cid->name[res] = '\0';
                     break;
                  case 11: /* Message Waiting */
                     res = cid->rawdata[x + 1];
                     if (res)
                        cid->flags |= CID_MSGWAITING;
                     else
                        cid->flags |= CID_NOMSGWAITING;
                     break;
                  case 17: /* UK: Call type, 1=Voice Call, 2=Ringback when free, 129=Message waiting  */
                  case 19: /* UK: Network message system status (Number of messages waiting) */
                  case 22: /* Something French */
                     break;
                  default:
                     ast_log(LOG_NOTICE, "Unknown IE %d\n", cid->rawdata[x - 1]);
                  }
                  res = cid->rawdata[x];
                  if (0 > res){  /* Negative offset in the CID Spill */
                     ast_log(LOG_NOTICE, "IE %d has bad field length of %d at offset %d\n", cid->rawdata[x-1], cid->rawdata[x], x);
                     /* Try again */
                     cid->sawflag = 0;
                     break;   /* Exit the loop */
                  }
                  x += cid->rawdata[x];
                  x++;
               }
            } else if (cid->type == 0x6) {
               /* VMWI SDMF */
               if (cid->rawdata[2] == 0x42) {
                  cid->flags |= CID_MSGWAITING;
               } else if (cid->rawdata[2] == 0x6f) {
                  cid->flags |= CID_NOMSGWAITING;
               }
            } else {
               /* SDMF */
               ast_copy_string(cid->number, cid->rawdata + 8, sizeof(cid->number));
            }
            if (!strcmp(cid->number, "P")) {
               strcpy(cid->number, "");
               cid->flags |= CID_PRIVATE_NUMBER;
            } else if (!strcmp(cid->number, "O") || ast_strlen_zero(cid->number)) {
               strcpy(cid->number, "");
               cid->flags |= CID_UNKNOWN_NUMBER;
            }
            if (!strcmp(cid->name, "P")) {
               strcpy(cid->name, "");
               cid->flags |= CID_PRIVATE_NAME;
            } else if (!strcmp(cid->name, "O") || ast_strlen_zero(cid->name)) {
               strcpy(cid->name, "");
               cid->flags |= CID_UNKNOWN_NAME;
            }
            return 1;
            break;
         default:
            ast_log(LOG_ERROR, "Dunno what to do with a digit in sawflag %d\n", cid->sawflag);
         }
      }
   }
   if (mylen) {
      memcpy(cid->oldstuff, buf, mylen * 2);
      cid->oldlen = mylen * 2;
   } else
      cid->oldlen = 0;

   return 0;
}

int callerid_feed_jp	(	struct callerid_state *	cid,
		unsigned char *	ubuf,
		int	samples,
		struct ast_format *	codec
	)

Read samples into the state machine.

Parameters:

cid	Which state machine to act upon
ubuf	containing your samples
samples	number of samples contained within the buffer.
codec	which codec (AST_FORMAT_ALAW or AST_FORMAT_ULAW)

Send received audio to the Caller*ID demodulator (for japanese style lines).

Return values:

-1	on error
0	for "needs more samples"
1	if the CallerID spill reception is complete.

Definition at line 307 of file callerid.c.

References ast_alloca, ast_copy_string(), ast_debug, ast_log(), AST_XLAW, calc_crc(), CID_UNKNOWN_NUMBER, callerid_state::crc, callerid_state::flags, fsk_serial(), callerid_state::fskd, callerid_state::len, len(), LOG_ERROR, LOG_NOTICE, LOG_WARNING, callerid_state::name, callerid_state::number, callerid_state::oldlen, callerid_state::oldstuff, option_debug, callerid_state::pos, callerid_state::rawdata, callerid_state::sawflag, and callerid_state::skipflag.

Referenced by analog_ss_thread(), and my_get_callerid().

{
   int mylen = len;
   int olen;
   int b = 'X';
   int b2;
   int res;
   int x;
   short *buf;

   buf = ast_alloca(2 * len + cid->oldlen);

   memcpy(buf, cid->oldstuff, cid->oldlen);
   mylen += cid->oldlen / 2;

   for (x = 0; x < len; x++)
      buf[x+cid->oldlen/2] = AST_XLAW(ubuf[x]);

   while (mylen >= 160) {
      b = b2 = 0;
      olen = mylen;
      res = fsk_serial(&cid->fskd, buf, &mylen, &b);

      if (mylen < 0) {
         ast_log(LOG_ERROR, "No start bit found in fsk data.\n");
         return -1;
      }

      buf += (olen - mylen);

      if (res < 0) {
         ast_log(LOG_NOTICE, "fsk_serial failed\n");
         return -1;
      }

      if (res == 1) {
         b2 = b;
         b  &= 0x7f;

         /* crc checksum calculation */
         if (cid->sawflag > 1)
            cid->crc = calc_crc(cid->crc, (unsigned char) b2);

         /* Ignore invalid bytes */
         if (b > 0xff)
            continue;

         /* skip DLE if needed */
         if (cid->sawflag > 0) {
            if (cid->sawflag != 5 && cid->skipflag == 0 && b == 0x10) {
               cid->skipflag = 1 ;
               continue ;
            }
         }
         if (cid->skipflag == 1)
            cid->skipflag = 0 ;

         /* caller id retrieval */
         switch (cid->sawflag) {
         case 0: /* DLE */
            if (b == 0x10) {
               cid->sawflag = 1;
               cid->skipflag = 0;
               cid->crc = 0;
            }
            break;
         case 1: /* SOH */
            if (b == 0x01)
               cid->sawflag = 2;
            break ;
         case 2: /* HEADER */
            if (b == 0x07)
               cid->sawflag = 3;
            break;
         case 3: /* STX */
            if (b == 0x02)
               cid->sawflag = 4;
            break;
         case 4: /* SERVICE TYPE */
            if (b == 0x40)
               cid->sawflag = 5;
            break;
         case 5: /* Frame Length */
            cid->sawflag = 6;
            break;
         case 6: /* NUMBER TYPE */
            cid->sawflag = 7;
            cid->pos = 0;
            cid->rawdata[cid->pos++] = b;
            break;
         case 7:  /* NUMBER LENGTH */
            cid->sawflag = 8;
            cid->len = b;
            if ((cid->len+2) >= sizeof(cid->rawdata)) {
               ast_log(LOG_WARNING, "too long caller id string\n") ;
               return -1;
            }
            cid->rawdata[cid->pos++] = b;
            break;
         case 8:  /* Retrieve message */
            cid->rawdata[cid->pos++] = b;
            cid->len--;
            if (cid->len<=0) {
               cid->rawdata[cid->pos] = '\0';
               cid->sawflag = 9;
            }
            break;
         case 9:  /* ETX */
            cid->sawflag = 10;
            break;
         case 10: /* CRC Checksum 1 */
            cid->sawflag = 11;
            break;
         case 11: /* CRC Checksum 2 */
            cid->sawflag = 12;
            if (cid->crc != 0) {
               ast_log(LOG_WARNING, "crc checksum error\n") ;
               return -1;
            }
            /* extract caller id data */
            for (x = 0; x < cid->pos;) {
               switch (cid->rawdata[x++]) {
               case 0x02: /* caller id  number */
                  cid->number[0] = '\0';
                  cid->name[0] = '\0';
                  cid->flags = 0;
                  res = cid->rawdata[x++];
                  ast_copy_string(cid->number, &cid->rawdata[x], res+1);
                  x += res;
                  break;
               case 0x21: /* additional information */
                  /* length */
                  x++;
                  /* number type */
                  switch (cid->rawdata[x]) {
                  case 0x00: /* unknown */
                  case 0x01: /* international number */
                  case 0x02: /* domestic number */
                  case 0x03: /* network */
                  case 0x04: /* local call */
                  case 0x06: /* short dial number */
                  case 0x07: /* reserved */
                  default:   /* reserved */
                     ast_debug(2, "cid info:#1=%X\n", cid->rawdata[x]);
                     break ;
                  }
                  x++;
                  /* numbering plan octed 4 */
                  x++;
                  /* numbering plan octed 5 */
                  switch (cid->rawdata[x]) {
                  case 0x00: /* unknown */
                  case 0x01: /* recommendation E.164 ISDN */
                  case 0x03: /* recommendation X.121 */
                  case 0x04: /* telex dial plan */
                  case 0x08: /* domestic dial plan */
                  case 0x09: /* private dial plan */
                  case 0x05: /* reserved */
                  default:   /* reserved */
                     ast_debug(2, "cid info:#2=%X\n", cid->rawdata[x]);
                     break ;
                  }
                  x++;
                  break ;
               case 0x04: /* no callerid reason */
                  /* length */
                  x++;
                  /* no callerid reason code */
                  switch (cid->rawdata[x]) {
                  case 'P': /* caller id denied by user */
                  case 'O': /* service not available */
                  case 'C': /* pay phone */
                  case 'S': /* service congested */
                     cid->flags |= CID_UNKNOWN_NUMBER;
                     ast_debug(2, "no cid reason:%c\n", cid->rawdata[x]);
                     break ;
                  }
                  x++;
                  break ;
               case 0x09: /* dialed number */
                  /* length */
                  res = cid->rawdata[x++];
                  /* dialed number */
                  x += res;
                  break ;
               case 0x22: /* dialed number additional information */
                  /* length */
                  x++;
                  /* number type */
                  switch (cid->rawdata[x]) {
                  case 0x00: /* unknown */
                  case 0x01: /* international number */
                  case 0x02: /* domestic number */
                  case 0x03: /* network */
                  case 0x04: /* local call */
                  case 0x06: /* short dial number */
                  case 0x07: /* reserved */
                  default:   /* reserved */
                     if (option_debug > 1)
                        ast_log(LOG_NOTICE, "did info:#1=%X\n", cid->rawdata[x]);
                     break ;
                  }
                  x++;
                  /* numbering plan octed 4 */
                  x++;
                  /* numbering plan octed 5 */
                  switch (cid->rawdata[x]) {
                  case 0x00: /* unknown */
                  case 0x01: /* recommendation E.164 ISDN */
                  case 0x03: /* recommendation X.121 */
                  case 0x04: /* telex dial plan */
                  case 0x08: /* domestic dial plan */
                  case 0x09: /* private dial plan */
                  case 0x05: /* reserved */
                  default:   /* reserved */
                     ast_debug(2, "did info:#2=%X\n", cid->rawdata[x]);
                     break ;
                  }
                  x++;
                  break ;
               }
            }
            return 1;
            break;
         default:
            ast_log(LOG_ERROR, "invalid value in sawflag %d\n", cid->sawflag);
         }
      }
   }
   if (mylen) {
      memcpy(cid->oldstuff, buf, mylen * 2);
      cid->oldlen = mylen * 2;
   } else
      cid->oldlen = 0;

   return 0;
}

void callerid_free ( struct callerid_state * cid )

This function frees callerid_state cid.

Parameters:

cid	This is the callerid_state state machine to free

Definition at line 735 of file callerid.c.

References ast_free.

Referenced by __analog_ss_thread(), analog_ss_thread(), mwi_thread(), and my_stop_cid_detect().

{
   ast_free(cid);
}

int callerid_generate	(	unsigned char *	buf,
		const char *	number,
		const char *	name,
		int	flags,
		int	callwaiting,
		struct ast_format *	codec
	)

Generates a CallerID FSK stream in ulaw format suitable for transmission.

Parameters:

buf	Buffer to use. If "buf" is supplied, it will use that buffer instead of allocating its own. "buf" must be at least 32000 bytes in size of you want to be sure you don't have an overrun.
number	Use NULL for no number or "P" for "private"
name	name to be used
flags	passed flags
callwaiting	callwaiting flag
codec	-- either AST_FORMAT_ULAW or AST_FORMAT_ALAW

This function creates a stream of callerid (a callerid spill) data in ulaw format.

Returns:: It returns the size (in bytes) of the data (if it returns a size of 0, there is probably an error)

Definition at line 899 of file callerid.c.

References callerid_genmsg(), len(), PUT_BYTE, PUT_CLID, and PUT_CLID_MARKMS.

Referenced by __ast_callerid_generate().

{
   int bytes = 0;
   int x, sum;
   int len;

   /* Initial carriers (real/imaginary) */
   float cr = 1.0;
   float ci = 0.0;
   float scont = 0.0;
   char msg[256];
   len = callerid_genmsg(msg, sizeof(msg), number, name, flags);
   if (!callwaiting) {
      /* Wait a half a second */
      for (x = 0; x < 4000; x++)
         PUT_BYTE(0x7f);
      /* Transmit 30 0x55's (looks like a square wave) for channel seizure */
      for (x = 0; x < 30; x++)
         PUT_CLID(0x55);
   }
   /* Send 150ms of callerid marks */
   for (x = 0; x < 150; x++)
      PUT_CLID_MARKMS;
   /* Send 0x80 indicating MDMF format */
   PUT_CLID(0x80);
   /* Put length of whole message */
   PUT_CLID(len);
   sum = 0x80 + strlen(msg);
   /* Put each character of message and update checksum */
   for (x = 0; x < len; x++) {
      PUT_CLID(msg[x]);
      sum += msg[x];
   }
   /* Send 2's compliment of sum */
   PUT_CLID(256 - (sum & 255));

   /* Send 50 more ms of marks */
   for (x = 0; x < 50; x++)
      PUT_CLID_MARKMS;

   return bytes;
}

static int callerid_genmsg	(	char *	msg,
		int	size,
		const char *	number,
		const char *	name,
		int	flags
	)		`[static]`

Definition at line 740 of file callerid.c.

References ast_localtime(), ast_strlen_zero(), ast_tvnow(), CID_PRIVATE_NAME, CID_PRIVATE_NUMBER, CID_UNKNOWN_NAME, CID_UNKNOWN_NUMBER, ast_tm::tm_hour, ast_tm::tm_mday, ast_tm::tm_min, and ast_tm::tm_mon.

Referenced by ast_callerid_vmwi_generate(), and callerid_generate().

{
   struct timeval now = ast_tvnow();
   struct ast_tm tm;
   char *ptr;
   int res;
   int i, x;

   /* Get the time */
   ast_localtime(&now, &tm, NULL);

   ptr = msg;

   /* Format time and message header */
   res = snprintf(ptr, size, "\001\010%02d%02d%02d%02d", tm.tm_mon + 1,
            tm.tm_mday, tm.tm_hour, tm.tm_min);
   size -= res;
   ptr += res;
   if (ast_strlen_zero(number) || (flags & CID_UNKNOWN_NUMBER)) {
      /* Indicate number not known */
      res = snprintf(ptr, size, "\004\001O");
      size -= res;
      ptr += res;
   } else if (flags & CID_PRIVATE_NUMBER) {
      /* Indicate number is private */
      res = snprintf(ptr, size, "\004\001P");
      size -= res;
      ptr += res;
   } else {
      /* Send up to 16 digits of number MAX */
      i = strlen(number);
      if (i > 16)
         i = 16;
      res = snprintf(ptr, size, "\002%c", i);
      size -= res;
      ptr += res;
      for (x = 0; x < i; x++)
         ptr[x] = number[x];
      ptr[i] = '\0';
      ptr += i;
      size -= i;
   }

   if (ast_strlen_zero(name) || (flags & CID_UNKNOWN_NAME)) {
      /* Indicate name not known */
      res = snprintf(ptr, size, "\010\001O");
      size -= res;
      ptr += res;
   } else if (flags & CID_PRIVATE_NAME) {
      /* Indicate name is private */
      res = snprintf(ptr, size, "\010\001P");
      size -= res;
      ptr += res;
   } else {
      /* Send up to 16 digits of name MAX */
      i = strlen(name);
      if (i > 16)
         i = 16;
      res = snprintf(ptr, size, "\007%c", i);
      size -= res;
      ptr += res;
      for (x = 0; x < i; x++)
         ptr[x] = name[x];
      ptr[i] = '\0';
      ptr += i;
      size -= i;
   }
   return (ptr - msg);

}

void callerid_get	(	struct callerid_state *	cid,
		char **	number,
		char **	name,
		int *	flags
	)

Extract info out of callerID state machine. Flags are listed above.

Parameters:

cid	Callerid state machine to act upon
number	Pass the address of a pointer-to-char (will contain the phone number)
name	Pass the address of a pointer-to-char (will contain the name)
flags	Pass the address of an int variable(will contain the various callerid flags)

This function extracts a callerid string out of a callerid_state state machine. If no number is found, *number will be set to NULL. Likewise for the name. Flags can contain any of the following:

Returns:: Returns nothing.

Definition at line 189 of file callerid.c.

References CID_PRIVATE_NAME, CID_PRIVATE_NUMBER, CID_UNKNOWN_NAME, CID_UNKNOWN_NUMBER, callerid_state::flags, callerid_state::name, and callerid_state::number.

Referenced by analog_ss_thread(), mwi_thread(), and my_get_callerid().

{
   *flags = cid->flags;
   if (cid->flags & (CID_UNKNOWN_NAME | CID_PRIVATE_NAME))
      *name = NULL;
   else
      *name = cid->name;
   if (cid->flags & (CID_UNKNOWN_NUMBER | CID_PRIVATE_NUMBER))
      *number = NULL;
   else
      *number = cid->number;
}

void callerid_get_dtmf	(	char *	cidstring,
		char *	number,
		int *	flags
	)

Get and parse DTMF-based callerid.

Parameters:

cidstring	The actual transmitted string.
number	The cid number is returned here.
flags	The cid flags are returned here.

Definition at line 202 of file callerid.c.

References ast_debug, ast_log(), CID_PRIVATE_NUMBER, CID_UNKNOWN_NUMBER, and LOG_WARNING.

Referenced by __analog_ss_thread(), and analog_ss_thread().

{
   int i;
   int code;

   /* "Clear" the number-buffer. */
   number[0] = 0;

   if (strlen(cidstring) < 2) {
      ast_debug(1, "No cid detected\n");
      *flags = CID_UNKNOWN_NUMBER;
      return;
   }

   /* Detect protocol and special types */
   if (cidstring[0] == 'B') {
      /* Handle special codes */
      code = atoi(&cidstring[1]);
      if (code == 0)
         *flags = CID_UNKNOWN_NUMBER;
      else if (code == 10)
         *flags = CID_PRIVATE_NUMBER;
      else
         ast_debug(1, "Unknown DTMF code %d\n", code);
   } else if (cidstring[0] == 'D' && cidstring[2] == '#') {
      /* .DK special code */
      if (cidstring[1] == '1')
         *flags = CID_PRIVATE_NUMBER;
      if (cidstring[1] == '2' || cidstring[1] == '3')
         *flags = CID_UNKNOWN_NUMBER;
   } else if (cidstring[0] == 'D' || cidstring[0] == 'A') {
      /* "Standard" callerid */
      for (i = 1; i < strlen(cidstring); i++) {
         if (cidstring[i] == 'C' || cidstring[i] == '#')
            break;
         if (isdigit(cidstring[i]))
            number[i-1] = cidstring[i];
         else
            ast_debug(1, "Unknown CID digit '%c'\n",
               cidstring[i]);
      }
      number[i-1] = 0;
   } else if (isdigit(cidstring[0])) {
      /* It begins with a digit, so we parse it as a number and hope
       * for the best */
      ast_log(LOG_WARNING, "Couldn't detect start-character. CID "
         "parsing might be unreliable\n");
      for (i = 0; i < strlen(cidstring); i++) {
         if (isdigit(cidstring[i]))
            number[i] = cidstring[i];
         else
            break;
      }
      number[i] = 0;
   } else {
      ast_debug(1, "Unknown CID protocol, start digit '%c'\n", cidstring[0]);
      *flags = CID_UNKNOWN_NUMBER;
   }
}

void callerid_init ( void )

Initialize stuff for inverse FFT.

CallerID Initialization.

Definition at line 116 of file callerid.c.

References CALLERID_MARK, CALLERID_SPACE, CAS_FREQ1, CAS_FREQ2, cos, M_PI, and SAS_FREQ.

Referenced by main().

{
   cid_dr[0] = cos(CALLERID_SPACE * 2.0 * M_PI / 8000.0);
   cid_di[0] = sin(CALLERID_SPACE * 2.0 * M_PI / 8000.0);
   cid_dr[1] = cos(CALLERID_MARK * 2.0 * M_PI / 8000.0);
   cid_di[1] = sin(CALLERID_MARK * 2.0 * M_PI / 8000.0);
   sasdr = cos(SAS_FREQ * 2.0 * M_PI / 8000.0);
   sasdi = sin(SAS_FREQ * 2.0 * M_PI / 8000.0);
   casdr1 = cos(CAS_FREQ1 * 2.0 * M_PI / 8000.0);
   casdi1 = sin(CAS_FREQ1 * 2.0 * M_PI / 8000.0);
   casdr2 = cos(CAS_FREQ2 * 2.0 * M_PI / 8000.0);
   casdi2 = sin(CAS_FREQ2 * 2.0 * M_PI / 8000.0);
}

struct callerid_state* callerid_new ( int cid_signalling ) [read]

Create a callerID state machine.

Parameters:

cid_signalling Type of signalling in use

This function returns a malloc'd instance of the callerid_state data structure.

Returns:: Returns a pointer to a malloc'd callerid_state structure, or NULL on error.

Definition at line 130 of file callerid.c.

References ast_calloc, fsk_data::bw, CID_UNKNOWN_NAME, CID_UNKNOWN_NUMBER, fsk_data::f_mark_idx, fsk_data::f_space_idx, callerid_state::flags, callerid_state::fskd, fskmodem_init(), fsk_data::icont, fsk_data::instop, fsk_data::ispb, fsk_data::nbit, fsk_data::nstop, fsk_data::pllids, fsk_data::pllispb, fsk_data::pllispb2, and fsk_data::spb.

Referenced by analog_ss_thread(), mwi_thread(), and my_start_cid_detect().

{
   struct callerid_state *cid;

   if ((cid = ast_calloc(1, sizeof(*cid)))) {
#ifdef INTEGER_CALLERID
      cid->fskd.ispb = 7;           /* 1200 baud */
      /* Set up for 1200 / 8000 freq *32 to allow ints */
      cid->fskd.pllispb  = (int)(8000 * 32  / 1200);
      cid->fskd.pllids   = cid->fskd.pllispb/32;
      cid->fskd.pllispb2 = cid->fskd.pllispb/2;

      cid->fskd.icont = 0;           /* PLL REset */
      /* cid->fskd.hdlc = 0; */        /* Async */
      cid->fskd.nbit = 8;              /* 8 bits */
      cid->fskd.instop = 1;         /* 1 stop bit */
      /* cid->fskd.paridad = 0; */     /* No parity */
      cid->fskd.bw = 1;                /* Filter 800 Hz */
      if (cid_signalling == 2) {       /* v23 signalling */
         cid->fskd.f_mark_idx  = 4; /* 1300 Hz */
         cid->fskd.f_space_idx = 5; /* 2100 Hz */
      } else {                         /* Bell 202 signalling as default */
         cid->fskd.f_mark_idx  = 2; /* 1200 Hz */
         cid->fskd.f_space_idx = 3; /* 2200 Hz */
      }
      /* cid->fskd.pcola = 0; */       /* No clue */
      /* cid->fskd.cont = 0.0; */      /* Digital PLL reset */
      /* cid->fskd.x0 = 0.0; */
      /* cid->fskd.state = 0; */
      cid->flags = CID_UNKNOWN_NAME | CID_UNKNOWN_NUMBER;
      /* cid->pos = 0; */

      fskmodem_init(&cid->fskd);
#else
      cid->fskd.spb = 7.0;             /* 1200 baud */
      /* cid->fskd.hdlc = 0; */        /* Async */
      cid->fskd.nbit = 8;              /* 8 bits */
      cid->fskd.nstop = 1.0;           /* 1 stop bit */
      /* cid->fskd.paridad = 0; */     /* No parity */
      cid->fskd.bw = 1;                /* Filter 800 Hz */
      if (cid_signalling == 2) {       /* v23 signalling */
         cid->fskd.f_mark_idx =  4; /* 1300 Hz */
         cid->fskd.f_space_idx = 5; /* 2100 Hz */
      } else {                         /* Bell 202 signalling as default */
         cid->fskd.f_mark_idx =  2; /* 1200 Hz */
         cid->fskd.f_space_idx = 3; /* 2200 Hz */
      }
      /* cid->fskd.pcola = 0; */       /* No clue */
      /* cid->fskd.cont = 0.0; */      /* Digital PLL reset */
      /* cid->fskd.x0 = 0.0; */
      /* cid->fskd.state = 0; */
      cid->flags = CID_UNKNOWN_NAME | CID_UNKNOWN_NUMBER;
      /* cid->pos = 0; */
#endif
   }

   return cid;
}

static void gen_tone	(	unsigned char *	buf,
		int	len,
		struct ast_format *	codec,
		float	ddr1,
		float	ddi1,
		float *	cr1,
		float *	ci1
	)		`[inline, static]`

Definition at line 100 of file callerid.c.

References AST_LIN2X, and len().

Referenced by ast_gen_cas().

{
   int x;
   float t;
   for (x = 0; x < len; x++) {
      t = *cr1 * ddr1 - *ci1 * ddi1;
      *ci1 = *cr1 * ddi1 + *ci1 * ddr1;
      *cr1 = t;
      t = 2.0 - (*cr1 * *cr1 + *ci1 * *ci1);
      *cr1 *= t;
      *ci1 *= t;
      buf[x] = AST_LIN2X(*cr1 * 8192.0);
   }
}

static void gen_tones	(	unsigned char *	buf,
		int	len,
		struct ast_format *	codec,
		float	ddr1,
		float	ddi1,
		float	ddr2,
		float	ddi2,
		float *	cr1,
		float *	ci1,
		float *	cr2,
		float *	ci2
	)		`[inline, static]`

Definition at line 78 of file callerid.c.

References AST_LIN2X, and len().

Referenced by ast_gen_cas().

{
   int x;
   float t;
   for (x = 0; x < len; x++) {
      t = *cr1 * ddr1 - *ci1 * ddi1;
      *ci1 = *cr1 * ddi1 + *ci1 * ddr1;
      *cr1 = t;
      t = 2.0 - (*cr1 * *cr1 + *ci1 * *ci1);
      *cr1 *= t;
      *ci1 *= t;

      t = *cr2 * ddr2 - *ci2 * ddi2;
      *ci2 = *cr2 * ddi2 + *ci2 * ddr2;
      *cr2 = t;
      t = 2.0 - (*cr2 * *cr2 + *ci2 * *ci2);
      *cr2 *= t;
      *ci2 *= t;
      buf[x] = AST_LIN2X((*cr1 + *cr2) * 2048.0);
   }
}