Mon Oct 8 12:39:23 2012

Asterisk developer's documentation


func_strings.c File Reference

String manipulation dialplan functions. More...

#include "asterisk.h"
#include <regex.h>
#include <ctype.h>
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
#include "asterisk/localtime.h"
#include "asterisk/test.h"

Go to the source code of this file.

Defines

#define beginning   (cmd[0] == 'U')
#define beginning   (cmd[0] == 'S')
#define HASH_FORMAT   HASH_PREFIX "%s~"
#define HASH_PREFIX   "~HASH~%s~"

Functions

static void __init_result_buf (void)
static void __init_tmp_buf (void)
static void __reg_module (void)
static void __unreg_module (void)
static int acf_strftime (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t buflen)
static int acf_strptime (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int array (struct ast_channel *chan, const char *cmd, char *var, const char *value)
static void clearvar_prefix (struct ast_channel *chan, const char *prefix)
static int csv_quote (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int exec_clearhash (struct ast_channel *chan, const char *data)
static int filter (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t len)
static int function_eval (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int function_eval2 (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t buflen)
static int function_fieldnum (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t len)
static int function_fieldnum_helper (struct ast_channel *chan, const char *cmd, char *parse, char *buf, struct ast_str **sbuf, ssize_t len)
static int function_fieldnum_str (struct ast_channel *chan, const char *cmd, char *parse, struct ast_str **buf, ssize_t len)
static int function_fieldqty (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t len)
static int function_fieldqty_helper (struct ast_channel *chan, const char *cmd, char *parse, char *buf, struct ast_str **sbuf, ssize_t len)
static int function_fieldqty_str (struct ast_channel *chan, const char *cmd, char *parse, struct ast_str **buf, ssize_t len)
static int hash_read (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int hash_write (struct ast_channel *chan, const char *cmd, char *var, const char *value)
static int hashkeys_read (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int hashkeys_read2 (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
static int keypadhash (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int len (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int listfilter (struct ast_channel *chan, const char *cmd, char *parse, char *buf, struct ast_str **bufstr, ssize_t len)
static int listfilter_read (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t len)
static int listfilter_read2 (struct ast_channel *chan, const char *cmd, char *parse, struct ast_str **buf, ssize_t len)
static int load_module (void)
static int passthru (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
static int quote (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int regex (struct ast_channel *chan, const char *cmd, char *parse, char *buf, size_t len)
static int replace (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
static int shift_pop (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
static int string_tolower (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int string_tolower2 (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t buflen)
static int string_toupper (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static int string_toupper2 (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t buflen)
static int unload_module (void)
static int unshift_push (struct ast_channel *chan, const char *cmd, char *data, const char *new_value)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "String handling dialplan functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
static char * app_clearhash = "ClearHash"
static struct ast_custom_function array_function
static struct ast_module_infoast_module_info = &__mod_info
static struct ast_custom_function csv_quote_function
static struct ast_custom_function eval_function
static struct ast_custom_function fieldnum_function
static struct ast_custom_function fieldqty_function
static struct ast_custom_function filter_function
static struct ast_custom_function hash_function
static struct ast_custom_function hashkeys_function
static struct ast_custom_function keypadhash_function
static struct ast_custom_function len_function
static struct ast_custom_function listfilter_function
static struct ast_custom_function passthru_function
static struct ast_custom_function pop_function
static struct ast_custom_function push_function
static struct ast_custom_function quote_function
static struct ast_custom_function regex_function
static struct ast_custom_function replace_function
static struct ast_threadstorage result_buf = { .once = PTHREAD_ONCE_INIT , .key_init = __init_result_buf , .custom_init = NULL , }
static struct ast_custom_function shift_function
static struct ast_custom_function strftime_function
static struct ast_custom_function strptime_function
static struct ast_threadstorage tmp_buf = { .once = PTHREAD_ONCE_INIT , .key_init = __init_tmp_buf , .custom_init = NULL , }
static struct ast_custom_function tolower_function
static struct ast_custom_function toupper_function
static struct ast_custom_function unshift_function


Detailed Description

String manipulation dialplan functions.

Author:
Tilghman Lesher

Anothony Minessale II

Definition in file func_strings.c.


Define Documentation

#define beginning   (cmd[0] == 'U')

#define beginning   (cmd[0] == 'S')

Referenced by shift_pop(), and unshift_push().

#define HASH_FORMAT   HASH_PREFIX "%s~"

Definition at line 884 of file func_strings.c.

Referenced by array(), hash_read(), and hash_write().

#define HASH_PREFIX   "~HASH~%s~"

Definition at line 883 of file func_strings.c.

Referenced by exec_clearhash(), hashkeys_read(), and hashkeys_read2().


Function Documentation

static void __init_result_buf ( void   )  [static]

Definition at line 47 of file func_strings.c.

00065 : If ${example} contains <literal>ex-amp-le</literal>, then ${FIELDQTY(example,-)} returns 3.</para>

static void __init_tmp_buf ( void   )  [static]

Definition at line 48 of file func_strings.c.

00065 : If ${example} contains <literal>ex-amp-le</literal>, then ${FIELDQTY(example,-)} returns 3.</para>

static void __reg_module ( void   )  [static]

Definition at line 1715 of file func_strings.c.

static void __unreg_module ( void   )  [static]

Definition at line 1715 of file func_strings.c.

static int acf_strftime ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1211 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_get_timeval(), ast_localtime(), ast_log(), AST_STANDARD_APP_ARGS, ast_strftime(), ast_tvnow(), format, and LOG_WARNING.

01213 {
01214    AST_DECLARE_APP_ARGS(args,
01215               AST_APP_ARG(epoch);
01216               AST_APP_ARG(timezone);
01217               AST_APP_ARG(format);
01218    );
01219    struct timeval when;
01220    struct ast_tm tm;
01221 
01222    buf[0] = '\0';
01223 
01224    AST_STANDARD_APP_ARGS(args, parse);
01225 
01226    ast_get_timeval(args.epoch, &when, ast_tvnow(), NULL);
01227    ast_localtime(&when, &tm, args.timezone);
01228 
01229    if (!args.format)
01230       args.format = "%c";
01231 
01232    if (ast_strftime(buf, buflen, args.format, &tm) <= 0)
01233       ast_log(LOG_WARNING, "C function strftime() output nothing?!!\n");
01234 
01235    buf[buflen - 1] = '\0';
01236 
01237    return 0;
01238 }

static int acf_strptime ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1245 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_log(), ast_mktime(), AST_STANDARD_APP_ARGS, ast_strlen_zero(), ast_strptime(), format, LOG_ERROR, and LOG_WARNING.

01247 {
01248    AST_DECLARE_APP_ARGS(args,
01249               AST_APP_ARG(timestring);
01250               AST_APP_ARG(timezone);
01251               AST_APP_ARG(format);
01252    );
01253    struct ast_tm tm;
01254 
01255    buf[0] = '\0';
01256 
01257    if (!data) {
01258       ast_log(LOG_ERROR,
01259             "Asterisk function STRPTIME() requires an argument.\n");
01260       return -1;
01261    }
01262 
01263    AST_STANDARD_APP_ARGS(args, data);
01264 
01265    if (ast_strlen_zero(args.format)) {
01266       ast_log(LOG_ERROR,
01267             "No format supplied to STRPTIME(<timestring>,<timezone>,<format>)");
01268       return -1;
01269    }
01270 
01271    if (!ast_strptime(args.timestring, args.format, &tm)) {
01272       ast_log(LOG_WARNING, "STRPTIME() found no time specified within the string\n");
01273    } else {
01274       struct timeval when;
01275       when = ast_mktime(&tm, args.timezone);
01276       snprintf(buf, buflen, "%d", (int) when.tv_sec);
01277    }
01278 
01279    return 0;
01280 }

static int array ( struct ast_channel chan,
const char *  cmd,
char *  var,
const char *  value 
) [static]

Definition at line 910 of file func_strings.c.

References AST_APP_ARG, ast_autoservice_stop(), ast_debug, AST_DECLARE_APP_ARGS, AST_STANDARD_APP_ARGS, ast_strdupa, HASH_FORMAT, pbx_builtin_getvar_helper(), pbx_builtin_setvar_helper(), and S_OR.

Referenced by hash_write().

00912 {
00913    AST_DECLARE_APP_ARGS(arg1,
00914               AST_APP_ARG(var)[100];
00915    );
00916    AST_DECLARE_APP_ARGS(arg2,
00917               AST_APP_ARG(val)[100];
00918    );
00919    char *origvar = "", *value2, varname[256];
00920    int i, ishash = 0;
00921 
00922    value2 = ast_strdupa(value);
00923    if (!var || !value2)
00924       return -1;
00925 
00926    if (!strcmp(cmd, "HASH")) {
00927       const char *var2 = pbx_builtin_getvar_helper(chan, "~ODBCFIELDS~");
00928       origvar = var;
00929       if (var2)
00930          var = ast_strdupa(var2);
00931       else {
00932          if (chan)
00933             ast_autoservice_stop(chan);
00934          return -1;
00935       }
00936       ishash = 1;
00937    }
00938 
00939    /* The functions this will generally be used with are SORT and ODBC_*, which
00940     * both return comma-delimited lists.  However, if somebody uses literal lists,
00941     * their commas will be translated to vertical bars by the load, and I don't
00942     * want them to be surprised by the result.  Hence, we prefer commas as the
00943     * delimiter, but we'll fall back to vertical bars if commas aren't found.
00944     */
00945    ast_debug(1, "array (%s=%s)\n", var, S_OR(value2, ""));
00946    AST_STANDARD_APP_ARGS(arg1, var);
00947 
00948    AST_STANDARD_APP_ARGS(arg2, value2);
00949 
00950    for (i = 0; i < arg1.argc; i++) {
00951       ast_debug(1, "array set value (%s=%s)\n", arg1.var[i],
00952             S_OR(arg2.val[i], ""));
00953       if (i < arg2.argc) {
00954          if (ishash) {
00955             if (origvar[0] == '_') {
00956                if (origvar[1] == '_') {
00957                   snprintf(varname, sizeof(varname), "__" HASH_FORMAT, origvar + 2, arg1.var[i]);
00958                } else {
00959                   snprintf(varname, sizeof(varname), "_" HASH_FORMAT, origvar + 1, arg1.var[i]);
00960                }
00961             } else {
00962                snprintf(varname, sizeof(varname), HASH_FORMAT, origvar, arg1.var[i]);
00963             }
00964 
00965             pbx_builtin_setvar_helper(chan, varname, arg2.val[i]);
00966          } else {
00967             pbx_builtin_setvar_helper(chan, arg1.var[i], arg2.val[i]);
00968          }
00969       } else {
00970          /* We could unset the variable, by passing a NULL, but due to
00971           * pushvar semantics, that could create some undesired behavior. */
00972          if (ishash) {
00973             snprintf(varname, sizeof(varname), HASH_FORMAT, origvar, arg1.var[i]);
00974             pbx_builtin_setvar_helper(chan, varname, "");
00975          } else {
00976             pbx_builtin_setvar_helper(chan, arg1.var[i], "");
00977          }
00978       }
00979    }
00980 
00981    return 0;
00982 }

static void clearvar_prefix ( struct ast_channel chan,
const char *  prefix 
) [static]

Definition at line 889 of file func_strings.c.

References ast_free, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_var_name(), ast_var_t::entries, len(), var, and ast_channel::varshead.

Referenced by exec_clearhash().

00890 {
00891    struct ast_var_t *var;
00892    int len = strlen(prefix);
00893    AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->varshead, var, entries) {
00894       if (strncasecmp(prefix, ast_var_name(var), len) == 0) {
00895          AST_LIST_REMOVE_CURRENT(entries);
00896          ast_free(var);
00897       }
00898    }
00899    AST_LIST_TRAVERSE_SAFE_END
00900 }

static int csv_quote ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 1158 of file func_strings.c.

References ast_copy_string(), ast_log(), ast_strlen_zero(), and LOG_ERROR.

01159 {
01160    char *bufptr = buf, *dataptr = data;
01161 
01162    if (len < 3) { /* at least two for quotes and one for binary zero */
01163       ast_log(LOG_ERROR, "Not enough buffer\n");
01164       return -1;
01165    }
01166 
01167    if (ast_strlen_zero(data)) {
01168       ast_copy_string(buf, "\"\"", len);
01169       return 0;
01170    }
01171 
01172    *bufptr++ = '"';
01173    for (; bufptr < buf + len - 3; dataptr++){
01174       if (*dataptr == '"') {
01175          *bufptr++ = '"';
01176          *bufptr++ = '"';
01177       } else if (*dataptr == '\0') {
01178          break;
01179       } else {
01180          *bufptr++ = *dataptr;
01181       }
01182    }
01183    *bufptr++ = '"';
01184    *bufptr='\0';
01185    return 0;
01186 }

static int exec_clearhash ( struct ast_channel chan,
const char *  data 
) [static]

Definition at line 902 of file func_strings.c.

References clearvar_prefix(), HASH_PREFIX, and prefix.

Referenced by load_module().

00903 {
00904    char prefix[80];
00905    snprintf(prefix, sizeof(prefix), HASH_PREFIX, data ? (char *)data : "null");
00906    clearvar_prefix(chan, prefix);
00907    return 0;
00908 }

static int filter ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  len 
) [static]

Definition at line 690 of file func_strings.c.

References args, AST_APP_ARG, ast_debug, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_log(), ast_opt_dont_warn, AST_STANDARD_RAW_ARGS, LOG_ERROR, LOG_WARNING, and string.

Referenced by __ast_data_add(), append_var_and_value_to_filter(), data_filter_destructor(), data_filter_generate(), data_filter_release(), data_result_generate(), data_result_generate_node(), manager_data_get(), realtime_ldap_base_ap(), set_egress_subscription(), update2_ldap(), and update_ldap().

00692 {
00693    AST_DECLARE_APP_ARGS(args,
00694               AST_APP_ARG(allowed);
00695               AST_APP_ARG(string);
00696    );
00697    char *outbuf = buf;
00698    unsigned char ac;
00699    char allowed[256] = "";
00700    size_t allowedlen = 0;
00701    int32_t bitfield[8] = { 0, }; /* 256 bits */
00702 
00703    AST_STANDARD_RAW_ARGS(args, parse);
00704 
00705    if (!args.string) {
00706       ast_log(LOG_ERROR, "Usage: FILTER(<allowed-chars>,<string>)\n");
00707       return -1;
00708    }
00709 
00710    if (args.allowed[0] == '"' && !ast_opt_dont_warn) {
00711       ast_log(LOG_WARNING, "FILTER allowed characters includes the quote (\") character.  This may not be what you want.\n");
00712    }
00713 
00714    /* Expand ranges */
00715    for (; *(args.allowed);) {
00716       char c1 = 0, c2 = 0;
00717       size_t consumed = 0;
00718 
00719       if (ast_get_encoded_char(args.allowed, &c1, &consumed))
00720          return -1;
00721       args.allowed += consumed;
00722 
00723       if (*(args.allowed) == '-') {
00724          if (ast_get_encoded_char(args.allowed + 1, &c2, &consumed))
00725             c2 = c1;
00726          args.allowed += consumed + 1;
00727 
00728          if ((unsigned char) c2 < (unsigned char) c1 && !ast_opt_dont_warn) {
00729             ast_log(LOG_WARNING, "Range wrapping in FILTER(%s,%s).  This may not be what you want.\n", parse, args.string);
00730          }
00731 
00732          /*!\note
00733           * Looks a little strange, until you realize that we can overflow
00734           * the size of a char.
00735           */
00736          for (ac = (unsigned char) c1; ac != (unsigned char) c2; ac++) {
00737             bitfield[ac / 32] |= 1 << (ac % 32);
00738          }
00739          bitfield[ac / 32] |= 1 << (ac % 32);
00740 
00741          ast_debug(4, "c1=%d, c2=%d\n", c1, c2);
00742       } else {
00743          ac = (unsigned char) c1;
00744          ast_debug(4, "c1=%d, consumed=%d, args.allowed=%s\n", c1, (int) consumed, args.allowed - consumed);
00745          bitfield[ac / 32] |= 1 << (ac % 32);
00746       }
00747    }
00748 
00749    for (ac = 1; ac != 0; ac++) {
00750       if (bitfield[ac / 32] & (1 << (ac % 32))) {
00751          allowed[allowedlen++] = ac;
00752       }
00753    }
00754 
00755    ast_debug(1, "Allowed: %s\n", allowed);
00756 
00757    for (; *(args.string) && (buf + len - 1 > outbuf); (args.string)++) {
00758       if (strchr(allowed, *(args.string)))
00759          *outbuf++ = *(args.string);
00760    }
00761    *outbuf = '\0';
00762 
00763    return 0;
00764 }

static int function_eval ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1287 of file func_strings.c.

References ast_log(), ast_strlen_zero(), LOG_WARNING, and pbx_substitute_variables_helper().

01289 {
01290    if (ast_strlen_zero(data)) {
01291       ast_log(LOG_WARNING, "EVAL requires an argument: EVAL(<string>)\n");
01292       return -1;
01293    }
01294 
01295    pbx_substitute_variables_helper(chan, data, buf, buflen - 1);
01296 
01297    return 0;
01298 }

static int function_eval2 ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  buflen 
) [static]

Definition at line 1300 of file func_strings.c.

References ast_log(), ast_str_substitute_variables(), ast_strlen_zero(), and LOG_WARNING.

01302 {
01303    if (ast_strlen_zero(data)) {
01304       ast_log(LOG_WARNING, "EVAL requires an argument: EVAL(<string>)\n");
01305       return -1;
01306    }
01307 
01308    ast_str_substitute_variables(buf, buflen, chan, data);
01309 
01310    return 0;
01311 }

static int function_fieldnum ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  len 
) [static]

Definition at line 544 of file func_strings.c.

References function_fieldnum_helper().

00546 {
00547    return function_fieldnum_helper(chan, cmd, parse, buf, NULL, len);
00548 }

static int function_fieldnum_helper ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
struct ast_str **  sbuf,
ssize_t  len 
) [static]

Definition at line 483 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), ast_strlen_zero(), LOG_ERROR, result_buf, str, and strsep().

Referenced by function_fieldnum(), and function_fieldnum_str().

00485 {
00486    char *varsubst, *field;
00487    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00488    int fieldindex = 0, res = 0;
00489    AST_DECLARE_APP_ARGS(args,
00490       AST_APP_ARG(varname);
00491       AST_APP_ARG(delim);
00492       AST_APP_ARG(field);
00493    );
00494    char delim[2] = "";
00495    size_t delim_used;
00496 
00497    if (!str) {
00498       return -1;
00499    }
00500 
00501    AST_STANDARD_APP_ARGS(args, parse);
00502 
00503    if (args.argc < 3) {
00504       ast_log(LOG_ERROR, "Usage: FIELDNUM(<listname>,<delimiter>,<fieldvalue>)\n");
00505       res = -1;
00506    } else {
00507       varsubst = alloca(strlen(args.varname) + 4);
00508       sprintf(varsubst, "${%s}", args.varname);
00509 
00510       ast_str_substitute_variables(&str, 0, chan, varsubst);
00511 
00512       if (ast_str_strlen(str) == 0 || ast_strlen_zero(args.delim)) {
00513          fieldindex = 0;
00514       } else if (ast_get_encoded_char(args.delim, delim, &delim_used) == -1) {
00515          res = -1;
00516       } else {
00517          char *varval = ast_str_buffer(str);
00518 
00519          while ((field = strsep(&varval, delim)) != NULL) {
00520             fieldindex++;
00521 
00522             if (!strcasecmp(field, args.field)) {
00523                break;
00524             }
00525          }
00526 
00527          if (!field) {
00528             fieldindex = 0;
00529          }
00530 
00531          res = 0;
00532       }
00533    }
00534 
00535    if (sbuf) {
00536       ast_str_set(sbuf, len, "%d", fieldindex);
00537    } else {
00538       snprintf(buf, len, "%d", fieldindex);
00539    }
00540 
00541    return res;
00542 }

static int function_fieldnum_str ( struct ast_channel chan,
const char *  cmd,
char *  parse,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 550 of file func_strings.c.

References function_fieldnum_helper().

00552 {
00553    return function_fieldnum_helper(chan, cmd, parse, NULL, buf, len);
00554 }

static int function_fieldqty ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  len 
) [static]

Definition at line 465 of file func_strings.c.

References function_fieldqty_helper().

00467 {
00468    return function_fieldqty_helper(chan, cmd, parse, buf, NULL, len);
00469 }

static int function_fieldqty_helper ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
struct ast_str **  sbuf,
ssize_t  len 
) [static]

Definition at line 420 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), AST_STANDARD_APP_ARGS, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), result_buf, str, and strsep().

Referenced by function_fieldqty(), and function_fieldqty_str().

00422 {
00423    char *varsubst;
00424    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00425    int fieldcount = 0;
00426    AST_DECLARE_APP_ARGS(args,
00427               AST_APP_ARG(varname);
00428               AST_APP_ARG(delim);
00429       );
00430    char delim[2] = "";
00431    size_t delim_used;
00432 
00433    if (!str) {
00434       return -1;
00435    }
00436 
00437    AST_STANDARD_APP_ARGS(args, parse);
00438    if (args.delim) {
00439       ast_get_encoded_char(args.delim, delim, &delim_used);
00440 
00441       varsubst = alloca(strlen(args.varname) + 4);
00442 
00443       sprintf(varsubst, "${%s}", args.varname);
00444       ast_str_substitute_variables(&str, 0, chan, varsubst);
00445       if (ast_str_strlen(str) == 0) {
00446          fieldcount = 0;
00447       } else {
00448          char *varval = ast_str_buffer(str);
00449          while (strsep(&varval, delim)) {
00450             fieldcount++;
00451          }
00452       }
00453    } else {
00454       fieldcount = 1;
00455    }
00456    if (sbuf) {
00457       ast_str_set(sbuf, len, "%d", fieldcount);
00458    } else {
00459       snprintf(buf, len, "%d", fieldcount);
00460    }
00461 
00462    return 0;
00463 }

static int function_fieldqty_str ( struct ast_channel chan,
const char *  cmd,
char *  parse,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 471 of file func_strings.c.

References function_fieldqty_helper().

00473 {
00474    return function_fieldqty_helper(chan, cmd, parse, NULL, buf, len);
00475 }

static int hash_read ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 1056 of file func_strings.c.

References AST_APP_ARG, ast_copy_string(), AST_DECLARE_APP_ARGS, AST_STANDARD_APP_ARGS, HASH_FORMAT, hashkeys_read(), pbx_builtin_getvar_helper(), and pbx_builtin_setvar_helper().

01057 {
01058    char varname[256];
01059    const char *varvalue;
01060    AST_DECLARE_APP_ARGS(arg,
01061       AST_APP_ARG(hashname);
01062       AST_APP_ARG(hashkey);
01063    );
01064 
01065    AST_STANDARD_APP_ARGS(arg, data);
01066    if (arg.argc == 2) {
01067       snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg.hashkey);
01068       varvalue = pbx_builtin_getvar_helper(chan, varname);
01069       if (varvalue)
01070          ast_copy_string(buf, varvalue, len);
01071       else
01072          *buf = '\0';
01073    } else if (arg.argc == 1) {
01074       char colnames[4096];
01075       int i;
01076       AST_DECLARE_APP_ARGS(arg2,
01077          AST_APP_ARG(col)[100];
01078       );
01079 
01080       /* Get column names, in no particular order */
01081       hashkeys_read(chan, "HASHKEYS", arg.hashname, colnames, sizeof(colnames));
01082       pbx_builtin_setvar_helper(chan, "~ODBCFIELDS~", colnames);
01083 
01084       AST_STANDARD_APP_ARGS(arg2, colnames);
01085       *buf = '\0';
01086 
01087       /* Now get the corresponding column values, in exactly the same order */
01088       for (i = 0; i < arg2.argc; i++) {
01089          snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg2.col[i]);
01090          varvalue = pbx_builtin_getvar_helper(chan, varname);
01091          strncat(buf, varvalue, len - strlen(buf) - 1);
01092          strncat(buf, ",", len - strlen(buf) - 1);
01093       }
01094 
01095       /* Strip trailing comma */
01096       buf[strlen(buf) - 1] = '\0';
01097    }
01098 
01099    return 0;
01100 }

static int hash_write ( struct ast_channel chan,
const char *  cmd,
char *  var,
const char *  value 
) [static]

Definition at line 1028 of file func_strings.c.

References array(), AST_APP_ARG, AST_DECLARE_APP_ARGS, AST_STANDARD_APP_ARGS, HASH_FORMAT, and pbx_builtin_setvar_helper().

01029 {
01030    char varname[256];
01031    AST_DECLARE_APP_ARGS(arg,
01032       AST_APP_ARG(hashname);
01033       AST_APP_ARG(hashkey);
01034    );
01035 
01036    if (!strchr(var, ',')) {
01037       /* Single argument version */
01038       return array(chan, "HASH", var, value);
01039    }
01040 
01041    AST_STANDARD_APP_ARGS(arg, var);
01042    if (arg.hashname[0] == '_') {
01043       if (arg.hashname[1] == '_') {
01044          snprintf(varname, sizeof(varname), "__" HASH_FORMAT, arg.hashname + 2, arg.hashkey);
01045       } else {
01046          snprintf(varname, sizeof(varname), "_" HASH_FORMAT, arg.hashname + 1, arg.hashkey);
01047       }
01048    } else {
01049       snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg.hashkey);
01050    }
01051    pbx_builtin_setvar_helper(chan, varname, value);
01052 
01053    return 0;
01054 }

static int hashkeys_read ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 984 of file func_strings.c.

References AST_LIST_TRAVERSE, ast_str_alloca, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_var_name(), HASH_PREFIX, prefix, and ast_channel::varshead.

Referenced by hash_read().

00985 {
00986    struct ast_var_t *newvar;
00987    struct ast_str *prefix = ast_str_alloca(80);
00988 
00989    ast_str_set(&prefix, -1, HASH_PREFIX, data);
00990    memset(buf, 0, len);
00991 
00992    AST_LIST_TRAVERSE(&chan->varshead, newvar, entries) {
00993       if (strncasecmp(ast_str_buffer(prefix), ast_var_name(newvar), ast_str_strlen(prefix)) == 0) {
00994          /* Copy everything after the prefix */
00995          strncat(buf, ast_var_name(newvar) + ast_str_strlen(prefix), len - strlen(buf) - 1);
00996          /* Trim the trailing ~ */
00997          buf[strlen(buf) - 1] = ',';
00998       }
00999    }
01000    /* Trim the trailing comma */
01001    buf[strlen(buf) - 1] = '\0';
01002    return 0;
01003 }

static int hashkeys_read2 ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 1005 of file func_strings.c.

References AST_LIST_TRAVERSE, ast_str_alloca, ast_str_append(), ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_var_name(), HASH_PREFIX, prefix, and ast_channel::varshead.

01006 {
01007    struct ast_var_t *newvar;
01008    struct ast_str *prefix = ast_str_alloca(80);
01009    char *tmp;
01010 
01011    ast_str_set(&prefix, -1, HASH_PREFIX, data);
01012 
01013    AST_LIST_TRAVERSE(&chan->varshead, newvar, entries) {
01014       if (strncasecmp(ast_str_buffer(prefix), ast_var_name(newvar), ast_str_strlen(prefix)) == 0) {
01015          /* Copy everything after the prefix */
01016          ast_str_append(buf, len, "%s", ast_var_name(newvar) + ast_str_strlen(prefix));
01017          /* Trim the trailing ~ */
01018          tmp = ast_str_buffer(*buf);
01019          tmp[ast_str_strlen(*buf) - 1] = ',';
01020       }
01021    }
01022    /* Trim the trailing comma */
01023    tmp = ast_str_buffer(*buf);
01024    tmp[ast_str_strlen(*buf) - 1] = '\0';
01025    return 0;
01026 }

static int keypadhash ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1319 of file func_strings.c.

01320 {
01321    char *bufptr, *dataptr;
01322 
01323    for (bufptr = buf, dataptr = data; bufptr < buf + buflen - 1; dataptr++) {
01324       if (*dataptr == '\0') {
01325          *bufptr++ = '\0';
01326          break;
01327       } else if (*dataptr == '1') {
01328          *bufptr++ = '1';
01329       } else if (strchr("AaBbCc2", *dataptr)) {
01330          *bufptr++ = '2';
01331       } else if (strchr("DdEeFf3", *dataptr)) {
01332          *bufptr++ = '3';
01333       } else if (strchr("GgHhIi4", *dataptr)) {
01334          *bufptr++ = '4';
01335       } else if (strchr("JjKkLl5", *dataptr)) {
01336          *bufptr++ = '5';
01337       } else if (strchr("MmNnOo6", *dataptr)) {
01338          *bufptr++ = '6';
01339       } else if (strchr("PpQqRrSs7", *dataptr)) {
01340          *bufptr++ = '7';
01341       } else if (strchr("TtUuVv8", *dataptr)) {
01342          *bufptr++ = '8';
01343       } else if (strchr("WwXxYyZz9", *dataptr)) {
01344          *bufptr++ = '9';
01345       } else if (*dataptr == '0') {
01346          *bufptr++ = '0';
01347       }
01348    }
01349    buf[buflen - 1] = '\0';
01350 
01351    return 0;
01352 }

static int len ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1193 of file func_strings.c.

Referenced by __analog_ss_thread(), __ast_cli_register(), __ast_str_helper(), __get_header(), __rtp_recvfrom(), __rtp_sendto(), _parse(), add_sdp(), ael_token_subst(), aji_io_recv(), aji_recv(), aji_send_header(), aji_send_raw(), aji_start_sasl(), alsa_write(), analog_ss_thread(), aoc_parse_ie(), append_interface(), append_var_and_value_to_filter(), ast_agi_register_multiple(), ast_agi_unregister_multiple(), ast_app_group_set_channel(), ast_callerid_vmwi_generate(), ast_cdr_appenduserfield(), ast_cli_complete(), ast_codec_get_len(), ast_complete_source_filename(), ast_dsp_noise(), ast_dsp_process(), ast_dsp_silence(), ast_event_cb(), ast_format_str_reduce(), ast_frdup(), ast_getformatname_multiple(), ast_http_send(), ast_http_uri_link(), ast_mkdir(), ast_pri_pack_hex_string(), ast_read_image(), ast_rtcp_write_rr(), ast_rtcp_write_sr(), ast_rtp_read(), ast_say_number_full_ka(), ast_smoother_read(), ast_sockaddr_resolve(), ast_str_substitute_variables_full(), ast_translate(), ast_udptl_write(), ast_xmldoc_printable(), authenticate(), build_device(), build_facility(), build_route(), callerid_generate(), cleaned_basedn(), clearvar_prefix(), cli_console_sendtext(), complete_agent_logoff_cmd(), complete_dialplan_add_extension(), complete_dialplan_add_ignorepat(), complete_dialplan_add_include(), complete_dialplan_remove_extension(), complete_dialplan_remove_ignorepat(), complete_dialplan_remove_include(), complete_meetmecmd(), complete_peer_helper(), complete_trans_path_choice(), conf_play(), config_jitterbuffer(), cops_getmsg(), copy(), create_video_frame(), dahdi_sendtext(), dahdi_setoption(), devstate_write(), dialgroup_refreshdb(), dictate_exec(), do_pktccops(), dundi_encrypt(), dundi_parse_ies(), dundi_send(), enc_ie_facility(), evt_event_deliver_cb(), expr2_token_subst(), ffmpeg_decode(), find_by_part(), get_body(), get_ip_and_port_from_sdp(), get_sdp(), get_sdp_iterate(), get_to_address(), gsm_write(), gsmtolin_framein(), h261_encap(), h263_encap(), h263_read(), h263_write(), h263p_encap(), h264_read(), h264_write(), handle_cli_core_show_translation(), handle_cli_devstate_change(), handle_commandmatchesarray(), handle_incoming(), handle_message(), handle_output(), handle_response(), handle_show_sysinfo(), help1(), iax_parse_ies(), iax_str2flags(), launch_monitor_thread(), listener(), load_file(), local_call(), lpc10tolin_framein(), lws2sws(), message_template_parse_emailbody(), method_match(), mgcp_ss(), mgcpsock_read(), misdn_read(), monmp3thread(), mpeg4_encap(), newpvt(), parse_ie(), ParseBookmark(), pbx_substitute_variables_helper_full(), phoneprov_callback(), pri_dchannel(), pri_ss_thread(), process_sdp(), read_credentials(), readfile_exec(), red_t140_to_red(), reschedule_precache(), run_agi(), scan_thread(), set_egress_subscription(), sig_pri_set_subaddress(), sip_addheader(), sip_show_channel(), sip_show_history(), skinny_ss(), sms_messagetx(), socket_read(), static_callback(), term_filter_escapes(), transfer_exec(), udptl_build_packet(), unistim_sp(), unquote(), wav_write(), and xmldoc_get_syntax_fun().

01194 {
01195    int length = 0;
01196 
01197    if (data)
01198       length = strlen(data);
01199 
01200    snprintf(buf, buflen, "%d", length);
01201 
01202    return 0;
01203 }

static int listfilter ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
struct ast_str **  bufstr,
ssize_t  len 
) [static]

Definition at line 562 of file func_strings.c.

References args, AST_APP_ARG, ast_channel_lock, ast_channel_unlock, ast_copy_string(), AST_DECLARE_APP_ARGS, ast_get_encoded_str(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_append(), ast_str_append_substr(), ast_str_buffer(), ast_str_make_space(), ast_str_reset(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), first, LOG_ERROR, result_buf, and tmp_buf.

Referenced by listfilter_read(), and listfilter_read2().

00563 {
00564    AST_DECLARE_APP_ARGS(args,
00565       AST_APP_ARG(listname);
00566       AST_APP_ARG(delimiter);
00567       AST_APP_ARG(fieldvalue);
00568    );
00569    struct ast_str *orig_list = ast_str_thread_get(&tmp_buf, 16);
00570    const char *begin, *cur, *next;
00571    int dlen, flen, first = 1;
00572    struct ast_str *result, **result_ptr = &result;
00573    char *delim, *varsubst;
00574 
00575    AST_STANDARD_APP_ARGS(args, parse);
00576 
00577    if (buf) {
00578       if (!(result = ast_str_thread_get(&result_buf, 16))) {
00579          return -1;
00580       }
00581    } else {
00582       /* Place the result directly into the output buffer */
00583       result_ptr = bufstr;
00584    }
00585 
00586    if (args.argc < 3) {
00587       ast_log(LOG_ERROR, "Usage: LISTFILTER(<listname>,<delimiter>,<fieldvalue>)\n");
00588       return -1;
00589    }
00590 
00591    varsubst = alloca(strlen(args.listname) + 4);
00592    sprintf(varsubst, "${%s}", args.listname);
00593 
00594    /* If we don't lock the channel, the variable could disappear out from underneath us. */
00595    if (chan) {
00596       ast_channel_lock(chan);
00597    }
00598    ast_str_substitute_variables(&orig_list, 0, chan, varsubst);
00599    if (!ast_str_strlen(orig_list)) {
00600       ast_log(LOG_ERROR, "List variable '%s' not found\n", args.listname);
00601       if (chan) {
00602          ast_channel_unlock(chan);
00603       }
00604       return -1;
00605    }
00606 
00607    /* If the string isn't there, just copy out the string and be done with it. */
00608    if (!strstr(ast_str_buffer(orig_list), args.fieldvalue)) {
00609       if (buf) {
00610          ast_copy_string(buf, ast_str_buffer(orig_list), len);
00611       } else {
00612          ast_str_set(result_ptr, len, "%s", ast_str_buffer(orig_list));
00613       }
00614       if (chan) {
00615          ast_channel_unlock(chan);
00616       }
00617       return 0;
00618    }
00619 
00620    dlen = strlen(args.delimiter);
00621    delim = alloca(dlen + 1);
00622    ast_get_encoded_str(args.delimiter, delim, dlen + 1);
00623 
00624    if ((dlen = strlen(delim)) == 0) {
00625       delim = ",";
00626       dlen = 1;
00627    }
00628 
00629    flen = strlen(args.fieldvalue);
00630 
00631    ast_str_reset(*result_ptr);
00632    /* Enough space for any result */
00633    if (len > -1) {
00634       ast_str_make_space(result_ptr, len ? len : ast_str_strlen(orig_list) + 1);
00635    }
00636 
00637    begin = ast_str_buffer(orig_list);
00638    next = strstr(begin, delim);
00639 
00640    do {
00641       /* Find next boundary */
00642       if (next) {
00643          cur = next;
00644          next = strstr(cur + dlen, delim);
00645       } else {
00646          cur = strchr(begin + dlen, '\0');
00647       }
00648 
00649       if (flen == cur - begin && !strncmp(begin, args.fieldvalue, flen)) {
00650          /* Skip field */
00651          begin += flen + dlen;
00652       } else {
00653          /* Copy field to output */
00654          if (!first) {
00655             ast_str_append(result_ptr, len, "%s", delim);
00656          }
00657 
00658          ast_str_append_substr(result_ptr, len, begin, cur - begin);
00659          first = 0;
00660          begin = cur + dlen;
00661       }
00662    } while (*cur != '\0');
00663    if (chan) {
00664       ast_channel_unlock(chan);
00665    }
00666 
00667    if (buf) {
00668       ast_copy_string(buf, ast_str_buffer(result), len);
00669    }
00670 
00671    return 0;
00672 }

static int listfilter_read ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  len 
) [static]

Definition at line 674 of file func_strings.c.

References listfilter().

00675 {
00676    return listfilter(chan, cmd, parse, buf, NULL, len);
00677 }

static int listfilter_read2 ( struct ast_channel chan,
const char *  cmd,
char *  parse,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 679 of file func_strings.c.

References listfilter().

00680 {
00681    return listfilter(chan, cmd, parse, NULL, buf, len);
00682 }

static int load_module ( void   )  [static]

Definition at line 1681 of file func_strings.c.

References app_clearhash, array_function, ast_custom_function_register, ast_register_application_xml, AST_TEST_REGISTER, csv_quote_function, eval_function, exec_clearhash(), fieldnum_function, fieldqty_function, filter_function, hash_function, hashkeys_function, keypadhash_function, len_function, listfilter_function, passthru_function, pop_function, push_function, quote_function, regex_function, replace_function, shift_function, strftime_function, strptime_function, tolower_function, toupper_function, and unshift_function.

01682 {
01683    int res = 0;
01684 
01685    AST_TEST_REGISTER(test_FIELDNUM);
01686    AST_TEST_REGISTER(test_FILTER);
01687    res |= ast_custom_function_register(&fieldqty_function);
01688    res |= ast_custom_function_register(&fieldnum_function);
01689    res |= ast_custom_function_register(&filter_function);
01690    res |= ast_custom_function_register(&replace_function);
01691    res |= ast_custom_function_register(&listfilter_function);
01692    res |= ast_custom_function_register(&regex_function);
01693    res |= ast_custom_function_register(&array_function);
01694    res |= ast_custom_function_register(&quote_function);
01695    res |= ast_custom_function_register(&csv_quote_function);
01696    res |= ast_custom_function_register(&len_function);
01697    res |= ast_custom_function_register(&strftime_function);
01698    res |= ast_custom_function_register(&strptime_function);
01699    res |= ast_custom_function_register(&eval_function);
01700    res |= ast_custom_function_register(&keypadhash_function);
01701    res |= ast_custom_function_register(&hashkeys_function);
01702    res |= ast_custom_function_register(&hash_function);
01703    res |= ast_register_application_xml(app_clearhash, exec_clearhash);
01704    res |= ast_custom_function_register(&toupper_function);
01705    res |= ast_custom_function_register(&tolower_function);
01706    res |= ast_custom_function_register(&shift_function);
01707    res |= ast_custom_function_register(&pop_function);
01708    res |= ast_custom_function_register(&push_function);
01709    res |= ast_custom_function_register(&unshift_function);
01710    res |= ast_custom_function_register(&passthru_function);
01711 
01712    return res;
01713 }

static int passthru ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 1533 of file func_strings.c.

References ast_str_set().

01534 {
01535    ast_str_set(buf, len, "%s", data);
01536    return 0;
01537 }

static int quote ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 1119 of file func_strings.c.

References ast_copy_string(), ast_log(), ast_strlen_zero(), LOG_ERROR, and LOG_WARNING.

Referenced by __ast_app_separate_args(), and parse_options().

01120 {
01121    char *bufptr = buf, *dataptr = data;
01122 
01123    if (len < 3){ /* at least two for quotes and one for binary zero */
01124       ast_log(LOG_ERROR, "Not enough buffer\n");
01125       return -1;
01126    }
01127 
01128    if (ast_strlen_zero(data)) {
01129       ast_log(LOG_WARNING, "No argument specified!\n");
01130       ast_copy_string(buf, "\"\"", len);
01131       return 0;
01132    }
01133 
01134    *bufptr++ = '"';
01135    for (; bufptr < buf + len - 3; dataptr++) {
01136       if (*dataptr == '\\') {
01137          *bufptr++ = '\\';
01138          *bufptr++ = '\\';
01139       } else if (*dataptr == '"') {
01140          *bufptr++ = '\\';
01141          *bufptr++ = '"';
01142       } else if (*dataptr == '\0') {
01143          break;
01144       } else {
01145          *bufptr++ = *dataptr;
01146       }
01147    }
01148    *bufptr++ = '"';
01149    *bufptr = '\0';
01150    return 0;
01151 }

static int regex ( struct ast_channel chan,
const char *  cmd,
char *  parse,
char *  buf,
size_t  len 
) [static]

Definition at line 841 of file func_strings.c.

References args, AST_APP_ARG, ast_debug, AST_DECLARE_APP_ARGS, ast_log(), AST_NONSTANDARD_APP_ARGS, LOG_ERROR, LOG_WARNING, and str.

00843 {
00844    AST_DECLARE_APP_ARGS(args,
00845               AST_APP_ARG(null);
00846               AST_APP_ARG(reg);
00847               AST_APP_ARG(str);
00848    );
00849    int errcode;
00850    regex_t regexbuf;
00851 
00852    buf[0] = '\0';
00853 
00854    AST_NONSTANDARD_APP_ARGS(args, parse, '"');
00855 
00856    if (args.argc != 3) {
00857       ast_log(LOG_ERROR, "Unexpected arguments: should have been in the form '\"<regex>\" <string>'\n");
00858       return -1;
00859    }
00860    if ((*args.str == ' ') || (*args.str == '\t'))
00861       args.str++;
00862 
00863    ast_debug(1, "FUNCTION REGEX (%s)(%s)\n", args.reg, args.str);
00864 
00865    if ((errcode = regcomp(&regexbuf, args.reg, REG_EXTENDED | REG_NOSUB))) {
00866       regerror(errcode, &regexbuf, buf, len);
00867       ast_log(LOG_WARNING, "Malformed input %s(%s): %s\n", cmd, parse, buf);
00868       return -1;
00869    }
00870    
00871    strcpy(buf, regexec(&regexbuf, args.str, 0, NULL, 0) ? "0" : "1");
00872 
00873    regfree(&regexbuf);
00874 
00875    return 0;
00876 }

static int replace ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 771 of file func_strings.c.

References args, AST_APP_ARG, ast_debug, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_get_encoded_str(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), ast_strlen_zero(), LOG_ERROR, result_buf, and str.

Referenced by process_text_line().

00772 {
00773    AST_DECLARE_APP_ARGS(args,
00774       AST_APP_ARG(varname);
00775       AST_APP_ARG(find);
00776       AST_APP_ARG(replace);
00777    );
00778    char *strptr, *varsubst;
00779    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00780    char find[256]; /* Only 256 characters possible */
00781    char replace[2] = "";
00782    size_t unused;
00783 
00784    AST_STANDARD_APP_ARGS(args, data);
00785 
00786    if (!str) {
00787       return -1;
00788    }
00789 
00790    if (args.argc < 2) {
00791       ast_log(LOG_ERROR, "Usage: %s(<varname>,<search-chars>[,<replace-char>])\n", cmd);
00792       return -1;
00793    }
00794 
00795    /* Decode escapes */
00796    ast_get_encoded_str(args.find, find, sizeof(find));
00797    ast_get_encoded_char(args.replace, replace, &unused);
00798 
00799    if (ast_strlen_zero(find) || ast_strlen_zero(args.varname)) {
00800       ast_log(LOG_ERROR, "The characters to search for and the variable name must not be empty.\n");
00801       return -1;
00802    }
00803 
00804    varsubst = alloca(strlen(args.varname) + 4);
00805    sprintf(varsubst, "${%s}", args.varname);
00806    ast_str_substitute_variables(&str, 0, chan, varsubst);
00807 
00808    if (!ast_str_strlen(str)) {
00809       /* Blank, nothing to replace */
00810       return -1;
00811    }
00812 
00813    ast_debug(3, "String to search: (%s)\n", ast_str_buffer(str));
00814    ast_debug(3, "Characters to find: (%s)\n", find);
00815    ast_debug(3, "Character to replace with: (%s)\n", replace);
00816 
00817    for (strptr = ast_str_buffer(str); *strptr; strptr++) {
00818       /* buf is already a mutable buffer, so we construct the result
00819        * directly there */
00820       if (strchr(find, *strptr)) {
00821          if (ast_strlen_zero(replace)) {
00822             /* Remove character */
00823             strcpy(strptr, strptr + 1); /* SAFE */
00824             strptr--;
00825          } else {
00826             /* Replace character */
00827             *strptr = *replace;
00828          }
00829       }
00830    }
00831 
00832    ast_str_set(buf, len, "%s", ast_str_buffer(str));
00833    return 0;
00834 }

static int shift_pop ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 1417 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), ast_strlen_zero(), beginning, LOG_WARNING, pbx_builtin_setvar_helper(), result_buf, and var.

01418 {
01419 #define beginning (cmd[0] == 'S') /* SHIFT */
01420    char *after, delimiter[2] = ",", *varsubst;
01421    size_t unused;
01422    struct ast_str *before = ast_str_thread_get(&result_buf, 16);
01423    char *(*search_func)(const char *s, int c) = (beginning ? strchr : strrchr);
01424    AST_DECLARE_APP_ARGS(args,
01425       AST_APP_ARG(var);
01426       AST_APP_ARG(delimiter);
01427    );
01428 
01429    if (!before) {
01430       return -1;
01431    }
01432 
01433    AST_STANDARD_APP_ARGS(args, data);
01434 
01435    if (ast_strlen_zero(args.var)) {
01436       ast_log(LOG_WARNING, "%s requires a variable name\n", cmd);
01437       return -1;
01438    }
01439 
01440    varsubst = alloca(strlen(args.var) + 4);
01441    sprintf(varsubst, "${%s}", args.var);
01442    ast_str_substitute_variables(&before, 0, chan, varsubst);
01443 
01444    if (args.argc > 1 && !ast_strlen_zero(args.delimiter)) {
01445       ast_get_encoded_char(args.delimiter, delimiter, &unused);
01446    }
01447 
01448    if (!ast_str_strlen(before)) {
01449       /* Nothing to pop */
01450       return -1;
01451    }
01452 
01453    if (!(after = search_func(ast_str_buffer(before), delimiter[0]))) {
01454       /* Only one entry in array */
01455       ast_str_set(buf, len, "%s", ast_str_buffer(before));
01456       pbx_builtin_setvar_helper(chan, args.var, "");
01457    } else {
01458       *after++ = '\0';
01459       ast_str_set(buf, len, "%s", beginning ? ast_str_buffer(before) : after);
01460       pbx_builtin_setvar_helper(chan, args.var, beginning ? after : ast_str_buffer(before));
01461    }
01462 
01463    return 0;
01464 #undef beginning
01465 }

static int string_tolower ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1388 of file func_strings.c.

01389 {
01390    char *bufptr = buf, *dataptr = data;
01391 
01392    while ((bufptr < buf + buflen - 1) && (*bufptr++ = tolower(*dataptr++)));
01393 
01394    return 0;
01395 }

static int string_tolower2 ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  buflen 
) [static]

Definition at line 1397 of file func_strings.c.

References ast_str_buffer(), ast_str_make_space(), ast_str_size(), and ast_str_update().

01398 {
01399    char *bufptr, *dataptr = data;
01400 
01401    if (buflen > -1) {
01402       ast_str_make_space(buf, buflen > 0 ? buflen : strlen(data) + 1);
01403    }
01404    bufptr = ast_str_buffer(*buf);
01405    while ((bufptr < ast_str_buffer(*buf) + ast_str_size(*buf) - 1) && (*bufptr++ = tolower(*dataptr++)));
01406    ast_str_update(*buf);
01407 
01408    return 0;
01409 }

static int string_toupper ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  buflen 
) [static]

Definition at line 1359 of file func_strings.c.

01360 {
01361    char *bufptr = buf, *dataptr = data;
01362 
01363    while ((bufptr < buf + buflen - 1) && (*bufptr++ = toupper(*dataptr++)));
01364 
01365    return 0;
01366 }

static int string_toupper2 ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  buflen 
) [static]

Definition at line 1368 of file func_strings.c.

References ast_str_buffer(), ast_str_make_space(), ast_str_size(), and ast_str_update().

01369 {
01370    char *bufptr, *dataptr = data;
01371 
01372    if (buflen > -1) {
01373       ast_str_make_space(buf, buflen > 0 ? buflen : strlen(data) + 1);
01374    }
01375    bufptr = ast_str_buffer(*buf);
01376    while ((bufptr < ast_str_buffer(*buf) + ast_str_size(*buf) - 1) && (*bufptr++ = toupper(*dataptr++)));
01377    ast_str_update(*buf);
01378 
01379    return 0;
01380 }

static int unload_module ( void   )  [static]

Definition at line 1647 of file func_strings.c.

References app_clearhash, array_function, ast_custom_function_unregister(), AST_TEST_UNREGISTER, ast_unregister_application(), csv_quote_function, eval_function, fieldnum_function, fieldqty_function, filter_function, hash_function, hashkeys_function, keypadhash_function, len_function, listfilter_function, passthru_function, pop_function, push_function, quote_function, regex_function, replace_function, shift_function, strftime_function, strptime_function, tolower_function, toupper_function, and unshift_function.

01648 {
01649    int res = 0;
01650 
01651    AST_TEST_UNREGISTER(test_FIELDNUM);
01652    AST_TEST_UNREGISTER(test_FILTER);
01653    res |= ast_custom_function_unregister(&fieldqty_function);
01654    res |= ast_custom_function_unregister(&fieldnum_function);
01655    res |= ast_custom_function_unregister(&filter_function);
01656    res |= ast_custom_function_unregister(&replace_function);
01657    res |= ast_custom_function_unregister(&listfilter_function);
01658    res |= ast_custom_function_unregister(&regex_function);
01659    res |= ast_custom_function_unregister(&array_function);
01660    res |= ast_custom_function_unregister(&quote_function);
01661    res |= ast_custom_function_unregister(&csv_quote_function);
01662    res |= ast_custom_function_unregister(&len_function);
01663    res |= ast_custom_function_unregister(&strftime_function);
01664    res |= ast_custom_function_unregister(&strptime_function);
01665    res |= ast_custom_function_unregister(&eval_function);
01666    res |= ast_custom_function_unregister(&keypadhash_function);
01667    res |= ast_custom_function_unregister(&hashkeys_function);
01668    res |= ast_custom_function_unregister(&hash_function);
01669    res |= ast_unregister_application(app_clearhash);
01670    res |= ast_custom_function_unregister(&toupper_function);
01671    res |= ast_custom_function_unregister(&tolower_function);
01672    res |= ast_custom_function_unregister(&shift_function);
01673    res |= ast_custom_function_unregister(&pop_function);
01674    res |= ast_custom_function_unregister(&push_function);
01675    res |= ast_custom_function_unregister(&unshift_function);
01676    res |= ast_custom_function_unregister(&passthru_function);
01677 
01678    return res;
01679 }

static int unshift_push ( struct ast_channel chan,
const char *  cmd,
char *  data,
const char *  new_value 
) [static]

Definition at line 1477 of file func_strings.c.

References args, AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_buffer(), ast_str_set(), ast_str_strlen(), ast_str_substitute_variables(), ast_str_thread_get(), ast_strlen_zero(), beginning, LOG_WARNING, pbx_builtin_setvar_helper(), result_buf, tmp_buf, and var.

01478 {
01479 #define beginning (cmd[0] == 'U') /* UNSHIFT */
01480    char delimiter[2] = ",", *varsubst;
01481    size_t unused;
01482    struct ast_str *buf, *previous_value;
01483    AST_DECLARE_APP_ARGS(args,
01484       AST_APP_ARG(var);
01485       AST_APP_ARG(delimiter);
01486    );
01487 
01488    if (!(buf = ast_str_thread_get(&result_buf, 16)) ||
01489       !(previous_value = ast_str_thread_get(&tmp_buf, 16))) {
01490       return -1;
01491    }
01492 
01493    AST_STANDARD_APP_ARGS(args, data);
01494 
01495    if (ast_strlen_zero(args.var)) {
01496       ast_log(LOG_WARNING, "%s requires a variable name\n", cmd);
01497       return -1;
01498    }
01499 
01500    if (args.argc > 1 && !ast_strlen_zero(args.delimiter)) {
01501       ast_get_encoded_char(args.delimiter, delimiter, &unused);
01502    }
01503 
01504    varsubst = alloca(strlen(args.var) + 4);
01505    sprintf(varsubst, "${%s}", args.var);
01506    ast_str_substitute_variables(&previous_value, 0, chan, varsubst);
01507 
01508    if (!ast_str_strlen(previous_value)) {
01509       ast_str_set(&buf, 0, "%s", new_value);
01510    } else {
01511       ast_str_set(&buf, 0, "%s%c%s",
01512          beginning ? new_value : ast_str_buffer(previous_value),
01513          delimiter[0],
01514          beginning ? ast_str_buffer(previous_value) : new_value);
01515    }
01516 
01517    pbx_builtin_setvar_helper(chan, args.var, ast_str_buffer(buf));
01518 
01519    return 0;
01520 #undef beginning
01521 }


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "String handling dialplan functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 1715 of file func_strings.c.

char* app_clearhash = "ClearHash" [static]

Definition at line 886 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function array_function [static]

Initial value:

 {
   .name = "ARRAY",
   .write = array,
}

Definition at line 1114 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 1715 of file func_strings.c.

struct ast_custom_function csv_quote_function [static]

Initial value:

 {
   .name = "CSV_QUOTE",
   .read = csv_quote,
}

Definition at line 1188 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function eval_function [static]

Initial value:

 {
   .name = "EVAL",
   .read = function_eval,
   .read2 = function_eval2,
}

Definition at line 1313 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function fieldnum_function [static]

Initial value:

 {
   .name = "FIELDNUM",
   .read = function_fieldnum,
   .read2 = function_fieldnum_str,
}

Definition at line 556 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function fieldqty_function [static]

Initial value:

 {
   .name = "FIELDQTY",
   .read = function_fieldqty,
   .read2 = function_fieldqty_str,
}

Definition at line 477 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function filter_function [static]

Initial value:

 {
   .name = "FILTER",
   .read = filter,
}

Definition at line 766 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function hash_function [static]

Initial value:

 {
   .name = "HASH",
   .write = hash_write,
   .read = hash_read,
}

Definition at line 1102 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function hashkeys_function [static]

Initial value:

 {
   .name = "HASHKEYS",
   .read = hashkeys_read,
   .read2 = hashkeys_read2,
}

Definition at line 1108 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function keypadhash_function [static]

Initial value:

 {
   .name = "KEYPADHASH",
   .read = keypadhash,
}

Definition at line 1354 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function len_function [static]

Initial value:

 {
   .name = "LEN",
   .read = len,
   .read_max = 12,
}

Definition at line 1205 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function listfilter_function [static]

Initial value:

 {
   .name = "LISTFILTER",
   .read = listfilter_read,
   .read2 = listfilter_read2,
}

Definition at line 684 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function passthru_function [static]

Initial value:

 {
   .name = "PASSTHRU",
   .read2 = passthru,
}

Definition at line 1539 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function pop_function [static]

Initial value:

 {
   .name = "POP",
   .read2 = shift_pop,
}

Definition at line 1472 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function push_function [static]

Initial value:

 {
   .name = "PUSH",
   .write = unshift_push,
}

Definition at line 1523 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function quote_function [static]

Initial value:

 {
   .name = "QUOTE",
   .read = quote,
}

Definition at line 1153 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function regex_function [static]

Initial value:

 {
   .name = "REGEX",
   .read = regex,
}

Definition at line 878 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function replace_function [static]

Initial value:

 {
   .name = "REPLACE",
   .read2 = replace,
}

Definition at line 836 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_threadstorage result_buf = { .once = PTHREAD_ONCE_INIT , .key_init = __init_result_buf , .custom_init = NULL , } [static]

Definition at line 47 of file func_strings.c.

struct ast_custom_function shift_function [static]

Initial value:

 {
   .name = "SHIFT",
   .read2 = shift_pop,
}

Definition at line 1467 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function strftime_function [static]

Initial value:

 {
   .name = "STRFTIME",
   .read = acf_strftime,
}

Definition at line 1240 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function strptime_function [static]

Initial value:

 {
   .name = "STRPTIME",
   .read = acf_strptime,
}

Definition at line 1282 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_threadstorage tmp_buf = { .once = PTHREAD_ONCE_INIT , .key_init = __init_tmp_buf , .custom_init = NULL , } [static]

Definition at line 48 of file func_strings.c.

Referenced by listfilter(), and unshift_push().

struct ast_custom_function tolower_function [static]

Initial value:

 {
   .name = "TOLOWER",
   .read = string_tolower,
   .read2 = string_tolower2,
}

Definition at line 1411 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function toupper_function [static]

Initial value:

 {
   .name = "TOUPPER",
   .read = string_toupper,
   .read2 = string_toupper2,
}

Definition at line 1382 of file func_strings.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function unshift_function [static]

Initial value:

 {
   .name = "UNSHIFT",
   .write = unshift_push,
}

Definition at line 1528 of file func_strings.c.

Referenced by load_module(), and unload_module().


Generated on Mon Oct 8 12:39:23 2012 for Asterisk - The Open Source Telephony Project by  doxygen 1.4.7