Wed Apr 6 11:30:05 2011

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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .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 881 of file func_strings.c.

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

#define HASH_PREFIX   "~HASH~%s~"

Definition at line 880 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 43 of file func_strings.c.

00061 : If ${example} contains <literal>ex-amp-le</literal>, then ${FIELDQTY(example,-)} returns 3.</para>

static void __init_tmp_buf ( void   )  [static]

Definition at line 44 of file func_strings.c.

00061 : If ${example} contains <literal>ex-amp-le</literal>, then ${FIELDQTY(example,-)} returns 3.</para>

static void __reg_module ( void   )  [static]

Definition at line 1712 of file func_strings.c.

static void __unreg_module ( void   )  [static]

Definition at line 1712 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 1208 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.

01210 {
01211    AST_DECLARE_APP_ARGS(args,
01212               AST_APP_ARG(epoch);
01213               AST_APP_ARG(timezone);
01214               AST_APP_ARG(format);
01215    );
01216    struct timeval when;
01217    struct ast_tm tm;
01218 
01219    buf[0] = '\0';
01220 
01221    AST_STANDARD_APP_ARGS(args, parse);
01222 
01223    ast_get_timeval(args.epoch, &when, ast_tvnow(), NULL);
01224    ast_localtime(&when, &tm, args.timezone);
01225 
01226    if (!args.format)
01227       args.format = "%c";
01228 
01229    if (ast_strftime(buf, buflen, args.format, &tm) <= 0)
01230       ast_log(LOG_WARNING, "C function strftime() output nothing?!!\n");
01231 
01232    buf[buflen - 1] = '\0';
01233 
01234    return 0;
01235 }

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

Definition at line 1242 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.

01244 {
01245    AST_DECLARE_APP_ARGS(args,
01246               AST_APP_ARG(timestring);
01247               AST_APP_ARG(timezone);
01248               AST_APP_ARG(format);
01249    );
01250    struct ast_tm tm;
01251 
01252    buf[0] = '\0';
01253 
01254    if (!data) {
01255       ast_log(LOG_ERROR,
01256             "Asterisk function STRPTIME() requires an argument.\n");
01257       return -1;
01258    }
01259 
01260    AST_STANDARD_APP_ARGS(args, data);
01261 
01262    if (ast_strlen_zero(args.format)) {
01263       ast_log(LOG_ERROR,
01264             "No format supplied to STRPTIME(<timestring>,<timezone>,<format>)");
01265       return -1;
01266    }
01267 
01268    if (!ast_strptime(args.timestring, args.format, &tm)) {
01269       ast_log(LOG_WARNING, "STRPTIME() found no time specified within the string\n");
01270    } else {
01271       struct timeval when;
01272       when = ast_mktime(&tm, args.timezone);
01273       snprintf(buf, buflen, "%d", (int) when.tv_sec);
01274    }
01275 
01276    return 0;
01277 }

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

Definition at line 907 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().

00909 {
00910    AST_DECLARE_APP_ARGS(arg1,
00911               AST_APP_ARG(var)[100];
00912    );
00913    AST_DECLARE_APP_ARGS(arg2,
00914               AST_APP_ARG(val)[100];
00915    );
00916    char *origvar = "", *value2, varname[256];
00917    int i, ishash = 0;
00918 
00919    value2 = ast_strdupa(value);
00920    if (!var || !value2)
00921       return -1;
00922 
00923    if (!strcmp(cmd, "HASH")) {
00924       const char *var2 = pbx_builtin_getvar_helper(chan, "~ODBCFIELDS~");
00925       origvar = var;
00926       if (var2)
00927          var = ast_strdupa(var2);
00928       else {
00929          if (chan)
00930             ast_autoservice_stop(chan);
00931          return -1;
00932       }
00933       ishash = 1;
00934    }
00935 
00936    /* The functions this will generally be used with are SORT and ODBC_*, which
00937     * both return comma-delimited lists.  However, if somebody uses literal lists,
00938     * their commas will be translated to vertical bars by the load, and I don't
00939     * want them to be surprised by the result.  Hence, we prefer commas as the
00940     * delimiter, but we'll fall back to vertical bars if commas aren't found.
00941     */
00942    ast_debug(1, "array (%s=%s)\n", var, S_OR(value2, ""));
00943    AST_STANDARD_APP_ARGS(arg1, var);
00944 
00945    AST_STANDARD_APP_ARGS(arg2, value2);
00946 
00947    for (i = 0; i < arg1.argc; i++) {
00948       ast_debug(1, "array set value (%s=%s)\n", arg1.var[i],
00949             S_OR(arg2.val[i], ""));
00950       if (i < arg2.argc) {
00951          if (ishash) {
00952             if (origvar[0] == '_') {
00953                if (origvar[1] == '_') {
00954                   snprintf(varname, sizeof(varname), "__" HASH_FORMAT, origvar + 2, arg1.var[i]);
00955                } else {
00956                   snprintf(varname, sizeof(varname), "_" HASH_FORMAT, origvar + 1, arg1.var[i]);
00957                }
00958             } else {
00959                snprintf(varname, sizeof(varname), HASH_FORMAT, origvar, arg1.var[i]);
00960             }
00961 
00962             pbx_builtin_setvar_helper(chan, varname, arg2.val[i]);
00963          } else {
00964             pbx_builtin_setvar_helper(chan, arg1.var[i], arg2.val[i]);
00965          }
00966       } else {
00967          /* We could unset the variable, by passing a NULL, but due to
00968           * pushvar semantics, that could create some undesired behavior. */
00969          if (ishash) {
00970             snprintf(varname, sizeof(varname), HASH_FORMAT, origvar, arg1.var[i]);
00971             pbx_builtin_setvar_helper(chan, varname, "");
00972          } else {
00973             pbx_builtin_setvar_helper(chan, arg1.var[i], "");
00974          }
00975       }
00976    }
00977 
00978    return 0;
00979 }

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

Definition at line 886 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().

00887 {
00888    struct ast_var_t *var;
00889    int len = strlen(prefix);
00890    AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->varshead, var, entries) {
00891       if (strncasecmp(prefix, ast_var_name(var), len) == 0) {
00892          AST_LIST_REMOVE_CURRENT(entries);
00893          ast_free(var);
00894       }
00895    }
00896    AST_LIST_TRAVERSE_SAFE_END
00897 }

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

Definition at line 1155 of file func_strings.c.

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

01156 {
01157    char *bufptr = buf, *dataptr = data;
01158 
01159    if (len < 3) { /* at least two for quotes and one for binary zero */
01160       ast_log(LOG_ERROR, "Not enough buffer");
01161       return -1;
01162    }
01163 
01164    if (ast_strlen_zero(data)) {
01165       ast_copy_string(buf, "\"\"", len);
01166       return 0;
01167    }
01168 
01169    *bufptr++ = '"';
01170    for (; bufptr < buf + len - 3; dataptr++){
01171       if (*dataptr == '"') {
01172          *bufptr++ = '"';
01173          *bufptr++ = '"';
01174       } else if (*dataptr == '\0') {
01175          break;
01176       } else {
01177          *bufptr++ = *dataptr;
01178       }
01179    }
01180    *bufptr++ = '"';
01181    *bufptr='\0';
01182    return 0;
01183 }

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

Definition at line 899 of file func_strings.c.

References clearvar_prefix(), HASH_PREFIX, and prefix.

Referenced by load_module().

00900 {
00901    char prefix[80];
00902    snprintf(prefix, sizeof(prefix), HASH_PREFIX, data ? (char *)data : "null");
00903    clearvar_prefix(chan, prefix);
00904    return 0;
00905 }

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

Definition at line 687 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().

00689 {
00690    AST_DECLARE_APP_ARGS(args,
00691               AST_APP_ARG(allowed);
00692               AST_APP_ARG(string);
00693    );
00694    char *outbuf = buf;
00695    unsigned char ac;
00696    char allowed[256] = "";
00697    size_t allowedlen = 0;
00698    int32_t bitfield[8] = { 0, }; /* 256 bits */
00699 
00700    AST_STANDARD_RAW_ARGS(args, parse);
00701 
00702    if (!args.string) {
00703       ast_log(LOG_ERROR, "Usage: FILTER(<allowed-chars>,<string>)\n");
00704       return -1;
00705    }
00706 
00707    if (args.allowed[0] == '"' && !ast_opt_dont_warn) {
00708       ast_log(LOG_WARNING, "FILTER allowed characters includes the quote (\") character.  This may not be what you want.\n");
00709    }
00710 
00711    /* Expand ranges */
00712    for (; *(args.allowed);) {
00713       char c1 = 0, c2 = 0;
00714       size_t consumed = 0;
00715 
00716       if (ast_get_encoded_char(args.allowed, &c1, &consumed))
00717          return -1;
00718       args.allowed += consumed;
00719 
00720       if (*(args.allowed) == '-') {
00721          if (ast_get_encoded_char(args.allowed + 1, &c2, &consumed))
00722             c2 = c1;
00723          args.allowed += consumed + 1;
00724 
00725          if ((unsigned char) c2 < (unsigned char) c1 && !ast_opt_dont_warn) {
00726             ast_log(LOG_WARNING, "Range wrapping in FILTER(%s,%s).  This may not be what you want.\n", parse, args.string);
00727          }
00728 
00729          /*!\note
00730           * Looks a little strange, until you realize that we can overflow
00731           * the size of a char.
00732           */
00733          for (ac = (unsigned char) c1; ac != (unsigned char) c2; ac++) {
00734             bitfield[ac / 32] |= 1 << (ac % 32);
00735          }
00736          bitfield[ac / 32] |= 1 << (ac % 32);
00737 
00738          ast_debug(4, "c1=%d, c2=%d\n", c1, c2);
00739       } else {
00740          ac = (unsigned char) c1;
00741          ast_debug(4, "c1=%d, consumed=%d, args.allowed=%s\n", c1, (int) consumed, args.allowed - consumed);
00742          bitfield[ac / 32] |= 1 << (ac % 32);
00743       }
00744    }
00745 
00746    for (ac = 1; ac != 0; ac++) {
00747       if (bitfield[ac / 32] & (1 << (ac % 32))) {
00748          allowed[allowedlen++] = ac;
00749       }
00750    }
00751 
00752    ast_debug(1, "Allowed: %s\n", allowed);
00753 
00754    for (; *(args.string) && (buf + len - 1 > outbuf); (args.string)++) {
00755       if (strchr(allowed, *(args.string)))
00756          *outbuf++ = *(args.string);
00757    }
00758    *outbuf = '\0';
00759 
00760    return 0;
00761 }

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

Definition at line 1284 of file func_strings.c.

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

01286 {
01287    if (ast_strlen_zero(data)) {
01288       ast_log(LOG_WARNING, "EVAL requires an argument: EVAL(<string>)\n");
01289       return -1;
01290    }
01291 
01292    pbx_substitute_variables_helper(chan, data, buf, buflen - 1);
01293 
01294    return 0;
01295 }

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

Definition at line 1297 of file func_strings.c.

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

01299 {
01300    if (ast_strlen_zero(data)) {
01301       ast_log(LOG_WARNING, "EVAL requires an argument: EVAL(<string>)\n");
01302       return -1;
01303    }
01304 
01305    ast_str_substitute_variables(buf, buflen, chan, data);
01306 
01307    return 0;
01308 }

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

Definition at line 540 of file func_strings.c.

References function_fieldnum_helper().

00542 {
00543    return function_fieldnum_helper(chan, cmd, parse, buf, NULL, len);
00544 }

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 479 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().

00481 {
00482    char *varsubst, *field;
00483    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00484    int fieldindex = 0, res = 0;
00485    AST_DECLARE_APP_ARGS(args,
00486       AST_APP_ARG(varname);
00487       AST_APP_ARG(delim);
00488       AST_APP_ARG(field);
00489    );
00490    char delim[2] = "";
00491    size_t delim_used;
00492 
00493    if (!str) {
00494       return -1;
00495    }
00496 
00497    AST_STANDARD_APP_ARGS(args, parse);
00498 
00499    if (args.argc < 3) {
00500       ast_log(LOG_ERROR, "Usage: FIELDNUM(<listname>,<delimiter>,<fieldvalue>)\n");
00501       res = -1;
00502    } else {
00503       varsubst = alloca(strlen(args.varname) + 4);
00504       sprintf(varsubst, "${%s}", args.varname);
00505 
00506       ast_str_substitute_variables(&str, 0, chan, varsubst);
00507 
00508       if (ast_str_strlen(str) == 0 || ast_strlen_zero(args.delim)) {
00509          fieldindex = 0;
00510       } else if (ast_get_encoded_char(args.delim, delim, &delim_used) == -1) {
00511          res = -1;
00512       } else {
00513          char *varval = ast_str_buffer(str);
00514 
00515          while ((field = strsep(&varval, delim)) != NULL) {
00516             fieldindex++;
00517 
00518             if (!strcasecmp(field, args.field)) {
00519                break;
00520             }
00521          }
00522 
00523          if (!field) {
00524             fieldindex = 0;
00525          }
00526 
00527          res = 0;
00528       }
00529    }
00530 
00531    if (sbuf) {
00532       ast_str_set(sbuf, len, "%d", fieldindex);
00533    } else {
00534       snprintf(buf, len, "%d", fieldindex);
00535    }
00536 
00537    return res;
00538 }

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 546 of file func_strings.c.

References function_fieldnum_helper().

00548 {
00549    return function_fieldnum_helper(chan, cmd, parse, NULL, buf, len);
00550 }

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

Definition at line 461 of file func_strings.c.

References function_fieldqty_helper().

00463 {
00464    return function_fieldqty_helper(chan, cmd, parse, buf, NULL, len);
00465 }

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 416 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().

00418 {
00419    char *varsubst;
00420    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00421    int fieldcount = 0;
00422    AST_DECLARE_APP_ARGS(args,
00423               AST_APP_ARG(varname);
00424               AST_APP_ARG(delim);
00425       );
00426    char delim[2] = "";
00427    size_t delim_used;
00428 
00429    if (!str) {
00430       return -1;
00431    }
00432 
00433    AST_STANDARD_APP_ARGS(args, parse);
00434    if (args.delim) {
00435       ast_get_encoded_char(args.delim, delim, &delim_used);
00436 
00437       varsubst = alloca(strlen(args.varname) + 4);
00438 
00439       sprintf(varsubst, "${%s}", args.varname);
00440       ast_str_substitute_variables(&str, 0, chan, varsubst);
00441       if (ast_str_strlen(str) == 0) {
00442          fieldcount = 0;
00443       } else {
00444          char *varval = ast_str_buffer(str);
00445          while (strsep(&varval, delim)) {
00446             fieldcount++;
00447          }
00448       }
00449    } else {
00450       fieldcount = 1;
00451    }
00452    if (sbuf) {
00453       ast_str_set(sbuf, len, "%d", fieldcount);
00454    } else {
00455       snprintf(buf, len, "%d", fieldcount);
00456    }
00457 
00458    return 0;
00459 }

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 467 of file func_strings.c.

References function_fieldqty_helper().

00469 {
00470    return function_fieldqty_helper(chan, cmd, parse, NULL, buf, len);
00471 }

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

Definition at line 1053 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().

01054 {
01055    char varname[256];
01056    const char *varvalue;
01057    AST_DECLARE_APP_ARGS(arg,
01058       AST_APP_ARG(hashname);
01059       AST_APP_ARG(hashkey);
01060    );
01061 
01062    AST_STANDARD_APP_ARGS(arg, data);
01063    if (arg.argc == 2) {
01064       snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg.hashkey);
01065       varvalue = pbx_builtin_getvar_helper(chan, varname);
01066       if (varvalue)
01067          ast_copy_string(buf, varvalue, len);
01068       else
01069          *buf = '\0';
01070    } else if (arg.argc == 1) {
01071       char colnames[4096];
01072       int i;
01073       AST_DECLARE_APP_ARGS(arg2,
01074          AST_APP_ARG(col)[100];
01075       );
01076 
01077       /* Get column names, in no particular order */
01078       hashkeys_read(chan, "HASHKEYS", arg.hashname, colnames, sizeof(colnames));
01079       pbx_builtin_setvar_helper(chan, "~ODBCFIELDS~", colnames);
01080 
01081       AST_STANDARD_APP_ARGS(arg2, colnames);
01082       *buf = '\0';
01083 
01084       /* Now get the corresponding column values, in exactly the same order */
01085       for (i = 0; i < arg2.argc; i++) {
01086          snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg2.col[i]);
01087          varvalue = pbx_builtin_getvar_helper(chan, varname);
01088          strncat(buf, varvalue, len - strlen(buf) - 1);
01089          strncat(buf, ",", len - strlen(buf) - 1);
01090       }
01091 
01092       /* Strip trailing comma */
01093       buf[strlen(buf) - 1] = '\0';
01094    }
01095 
01096    return 0;
01097 }

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

Definition at line 1025 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().

01026 {
01027    char varname[256];
01028    AST_DECLARE_APP_ARGS(arg,
01029       AST_APP_ARG(hashname);
01030       AST_APP_ARG(hashkey);
01031    );
01032 
01033    if (!strchr(var, ',')) {
01034       /* Single argument version */
01035       return array(chan, "HASH", var, value);
01036    }
01037 
01038    AST_STANDARD_APP_ARGS(arg, var);
01039    if (arg.hashname[0] == '_') {
01040       if (arg.hashname[1] == '_') {
01041          snprintf(varname, sizeof(varname), "__" HASH_FORMAT, arg.hashname + 2, arg.hashkey);
01042       } else {
01043          snprintf(varname, sizeof(varname), "_" HASH_FORMAT, arg.hashname + 1, arg.hashkey);
01044       }
01045    } else {
01046       snprintf(varname, sizeof(varname), HASH_FORMAT, arg.hashname, arg.hashkey);
01047    }
01048    pbx_builtin_setvar_helper(chan, varname, value);
01049 
01050    return 0;
01051 }

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

Definition at line 981 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().

00982 {
00983    struct ast_var_t *newvar;
00984    struct ast_str *prefix = ast_str_alloca(80);
00985 
00986    ast_str_set(&prefix, -1, HASH_PREFIX, data);
00987    memset(buf, 0, len);
00988 
00989    AST_LIST_TRAVERSE(&chan->varshead, newvar, entries) {
00990       if (strncasecmp(ast_str_buffer(prefix), ast_var_name(newvar), ast_str_strlen(prefix)) == 0) {
00991          /* Copy everything after the prefix */
00992          strncat(buf, ast_var_name(newvar) + ast_str_strlen(prefix), len - strlen(buf) - 1);
00993          /* Trim the trailing ~ */
00994          buf[strlen(buf) - 1] = ',';
00995       }
00996    }
00997    /* Trim the trailing comma */
00998    buf[strlen(buf) - 1] = '\0';
00999    return 0;
01000 }

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

Definition at line 1002 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.

01003 {
01004    struct ast_var_t *newvar;
01005    struct ast_str *prefix = ast_str_alloca(80);
01006    char *tmp;
01007 
01008    ast_str_set(&prefix, -1, HASH_PREFIX, data);
01009 
01010    AST_LIST_TRAVERSE(&chan->varshead, newvar, entries) {
01011       if (strncasecmp(ast_str_buffer(prefix), ast_var_name(newvar), ast_str_strlen(prefix)) == 0) {
01012          /* Copy everything after the prefix */
01013          ast_str_append(buf, len, "%s", ast_var_name(newvar) + ast_str_strlen(prefix));
01014          /* Trim the trailing ~ */
01015          tmp = ast_str_buffer(*buf);
01016          tmp[ast_str_strlen(*buf) - 1] = ',';
01017       }
01018    }
01019    /* Trim the trailing comma */
01020    tmp = ast_str_buffer(*buf);
01021    tmp[ast_str_strlen(*buf) - 1] = '\0';
01022    return 0;
01023 }

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

Definition at line 1316 of file func_strings.c.

01317 {
01318    char *bufptr, *dataptr;
01319 
01320    for (bufptr = buf, dataptr = data; bufptr < buf + buflen - 1; dataptr++) {
01321       if (*dataptr == '\0') {
01322          *bufptr++ = '\0';
01323          break;
01324       } else if (*dataptr == '1') {
01325          *bufptr++ = '1';
01326       } else if (strchr("AaBbCc2", *dataptr)) {
01327          *bufptr++ = '2';
01328       } else if (strchr("DdEeFf3", *dataptr)) {
01329          *bufptr++ = '3';
01330       } else if (strchr("GgHhIi4", *dataptr)) {
01331          *bufptr++ = '4';
01332       } else if (strchr("JjKkLl5", *dataptr)) {
01333          *bufptr++ = '5';
01334       } else if (strchr("MmNnOo6", *dataptr)) {
01335          *bufptr++ = '6';
01336       } else if (strchr("PpQqRrSs7", *dataptr)) {
01337          *bufptr++ = '7';
01338       } else if (strchr("TtUuVv8", *dataptr)) {
01339          *bufptr++ = '8';
01340       } else if (strchr("WwXxYyZz9", *dataptr)) {
01341          *bufptr++ = '9';
01342       } else if (*dataptr == '0') {
01343          *bufptr++ = '0';
01344       }
01345    }
01346    buf[buflen - 1] = '\0';
01347 
01348    return 0;
01349 }

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

Definition at line 1190 of file func_strings.c.

Referenced by __analog_ss_thread(), __ast_cli_register(), __ast_str_helper(), __get_header(), __rtp_recvfrom(), __rtp_sendto(), _parse(), _sip_tcp_helper_thread(), 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_output(), handle_response(), handle_show_sysinfo(), help1(), iax_parse_ies(), iax_str2flags(), launch_monitor_thread(), listener(), load_file(), local_call(), lpc10tolin_framein(), message_template_parse_emailbody(), method_match(), mgcp_ss(), mgcpsock_read(), misdn_read(), monmp3thread(), mpeg4_encap(), newpvt(), ogg_vorbis_read(), parse_ie(), ParseBookmark(), pbx_load_users(), pbx_substitute_variables_helper_full(), phoneprov_callback(), 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().

01191 {
01192    int length = 0;
01193 
01194    if (data)
01195       length = strlen(data);
01196 
01197    snprintf(buf, buflen, "%d", length);
01198 
01199    return 0;
01200 }

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 558 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().

00559 {
00560    AST_DECLARE_APP_ARGS(args,
00561       AST_APP_ARG(listname);
00562       AST_APP_ARG(delimiter);
00563       AST_APP_ARG(fieldvalue);
00564    );
00565    const char *ptr;
00566    struct ast_str *orig_list = ast_str_thread_get(&tmp_buf, 16);
00567    const char *begin, *cur, *next;
00568    int dlen, flen, first = 1;
00569    struct ast_str *result, **result_ptr = &result;
00570    char *delim, *varsubst;
00571 
00572    AST_STANDARD_APP_ARGS(args, parse);
00573 
00574    if (buf) {
00575       if (!(result = ast_str_thread_get(&result_buf, 16))) {
00576          return -1;
00577       }
00578    } else {
00579       /* Place the result directly into the output buffer */
00580       result_ptr = bufstr;
00581    }
00582 
00583    if (args.argc < 3) {
00584       ast_log(LOG_ERROR, "Usage: LISTFILTER(<listname>,<delimiter>,<fieldvalue>)\n");
00585       return -1;
00586    }
00587 
00588    varsubst = alloca(strlen(args.listname) + 4);
00589    sprintf(varsubst, "${%s}", args.listname);
00590 
00591    /* If we don't lock the channel, the variable could disappear out from underneath us. */
00592    if (chan) {
00593       ast_channel_lock(chan);
00594    }
00595    ast_str_substitute_variables(&orig_list, 0, chan, varsubst);
00596    if (!ast_str_strlen(orig_list)) {
00597       ast_log(LOG_ERROR, "List variable '%s' not found\n", args.listname);
00598       if (chan) {
00599          ast_channel_unlock(chan);
00600       }
00601       return -1;
00602    }
00603 
00604    /* If the string isn't there, just copy out the string and be done with it. */
00605    if (!(ptr = strstr(ast_str_buffer(orig_list), args.fieldvalue))) {
00606       if (buf) {
00607          ast_copy_string(buf, ast_str_buffer(orig_list), len);
00608       } else {
00609          ast_str_set(result_ptr, len, "%s", ast_str_buffer(orig_list));
00610       }
00611       if (chan) {
00612          ast_channel_unlock(chan);
00613       }
00614       return 0;
00615    }
00616 
00617    dlen = strlen(args.delimiter);
00618    delim = alloca(dlen + 1);
00619    ast_get_encoded_str(args.delimiter, delim, dlen + 1);
00620 
00621    if ((dlen = strlen(delim)) == 0) {
00622       delim = ",";
00623       dlen = 1;
00624    }
00625 
00626    flen = strlen(args.fieldvalue);
00627 
00628    ast_str_reset(*result_ptr);
00629    /* Enough space for any result */
00630    if (len > -1) {
00631       ast_str_make_space(result_ptr, len ? len : ast_str_strlen(orig_list) + 1);
00632    }
00633 
00634    begin = ast_str_buffer(orig_list);
00635    next = strstr(begin, delim);
00636 
00637    do {
00638       /* Find next boundary */
00639       if (next) {
00640          cur = next;
00641          next = strstr(cur + dlen, delim);
00642       } else {
00643          cur = strchr(begin + dlen, '\0');
00644       }
00645 
00646       if (flen == cur - begin && !strncmp(begin, args.fieldvalue, flen)) {
00647          /* Skip field */
00648          begin += flen + dlen;
00649       } else {
00650          /* Copy field to output */
00651          if (!first) {
00652             ast_str_append(result_ptr, len, "%s", delim);
00653          }
00654 
00655          ast_str_append_substr(result_ptr, len, begin, cur - begin);
00656          first = 0;
00657          begin = cur + dlen;
00658       }
00659    } while (*cur != '\0');
00660    if (chan) {
00661       ast_channel_unlock(chan);
00662    }
00663 
00664    if (buf) {
00665       ast_copy_string(buf, ast_str_buffer(result), len);
00666    }
00667 
00668    return 0;
00669 }

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

Definition at line 671 of file func_strings.c.

References listfilter().

00672 {
00673    return listfilter(chan, cmd, parse, buf, NULL, len);
00674 }

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

Definition at line 676 of file func_strings.c.

References listfilter().

00677 {
00678    return listfilter(chan, cmd, parse, NULL, buf, len);
00679 }

static int load_module ( void   )  [static]

Definition at line 1678 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.

01679 {
01680    int res = 0;
01681 
01682    AST_TEST_REGISTER(test_FIELDNUM);
01683    AST_TEST_REGISTER(test_FILTER);
01684    res |= ast_custom_function_register(&fieldqty_function);
01685    res |= ast_custom_function_register(&fieldnum_function);
01686    res |= ast_custom_function_register(&filter_function);
01687    res |= ast_custom_function_register(&replace_function);
01688    res |= ast_custom_function_register(&listfilter_function);
01689    res |= ast_custom_function_register(&regex_function);
01690    res |= ast_custom_function_register(&array_function);
01691    res |= ast_custom_function_register(&quote_function);
01692    res |= ast_custom_function_register(&csv_quote_function);
01693    res |= ast_custom_function_register(&len_function);
01694    res |= ast_custom_function_register(&strftime_function);
01695    res |= ast_custom_function_register(&strptime_function);
01696    res |= ast_custom_function_register(&eval_function);
01697    res |= ast_custom_function_register(&keypadhash_function);
01698    res |= ast_custom_function_register(&hashkeys_function);
01699    res |= ast_custom_function_register(&hash_function);
01700    res |= ast_register_application_xml(app_clearhash, exec_clearhash);
01701    res |= ast_custom_function_register(&toupper_function);
01702    res |= ast_custom_function_register(&tolower_function);
01703    res |= ast_custom_function_register(&shift_function);
01704    res |= ast_custom_function_register(&pop_function);
01705    res |= ast_custom_function_register(&push_function);
01706    res |= ast_custom_function_register(&unshift_function);
01707    res |= ast_custom_function_register(&passthru_function);
01708 
01709    return res;
01710 }

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

Definition at line 1530 of file func_strings.c.

References ast_str_set().

01531 {
01532    ast_str_set(buf, len, "%s", data);
01533    return 0;
01534 }

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

Definition at line 1116 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().

01117 {
01118    char *bufptr = buf, *dataptr = data;
01119 
01120    if (len < 3){ /* at least two for quotes and one for binary zero */
01121       ast_log(LOG_ERROR, "Not enough buffer");
01122       return -1;
01123    }
01124 
01125    if (ast_strlen_zero(data)) {
01126       ast_log(LOG_WARNING, "No argument specified!\n");
01127       ast_copy_string(buf, "\"\"", len);
01128       return 0;
01129    }
01130 
01131    *bufptr++ = '"';
01132    for (; bufptr < buf + len - 3; dataptr++) {
01133       if (*dataptr == '\\') {
01134          *bufptr++ = '\\';
01135          *bufptr++ = '\\';
01136       } else if (*dataptr == '"') {
01137          *bufptr++ = '\\';
01138          *bufptr++ = '"';
01139       } else if (*dataptr == '\0') {
01140          break;
01141       } else {
01142          *bufptr++ = *dataptr;
01143       }
01144    }
01145    *bufptr++ = '"';
01146    *bufptr = '\0';
01147    return 0;
01148 }

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

Definition at line 838 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.

00840 {
00841    AST_DECLARE_APP_ARGS(args,
00842               AST_APP_ARG(null);
00843               AST_APP_ARG(reg);
00844               AST_APP_ARG(str);
00845    );
00846    int errcode;
00847    regex_t regexbuf;
00848 
00849    buf[0] = '\0';
00850 
00851    AST_NONSTANDARD_APP_ARGS(args, parse, '"');
00852 
00853    if (args.argc != 3) {
00854       ast_log(LOG_ERROR, "Unexpected arguments: should have been in the form '\"<regex>\" <string>'\n");
00855       return -1;
00856    }
00857    if ((*args.str == ' ') || (*args.str == '\t'))
00858       args.str++;
00859 
00860    ast_debug(1, "FUNCTION REGEX (%s)(%s)\n", args.reg, args.str);
00861 
00862    if ((errcode = regcomp(&regexbuf, args.reg, REG_EXTENDED | REG_NOSUB))) {
00863       regerror(errcode, &regexbuf, buf, len);
00864       ast_log(LOG_WARNING, "Malformed input %s(%s): %s\n", cmd, parse, buf);
00865       return -1;
00866    }
00867    
00868    strcpy(buf, regexec(&regexbuf, args.str, 0, NULL, 0) ? "0" : "1");
00869 
00870    regfree(&regexbuf);
00871 
00872    return 0;
00873 }

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

Definition at line 768 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().

00769 {
00770    AST_DECLARE_APP_ARGS(args,
00771       AST_APP_ARG(varname);
00772       AST_APP_ARG(find);
00773       AST_APP_ARG(replace);
00774    );
00775    char *strptr, *varsubst;
00776    struct ast_str *str = ast_str_thread_get(&result_buf, 16);
00777    char find[256]; /* Only 256 characters possible */
00778    char replace[2] = "";
00779    size_t unused;
00780 
00781    AST_STANDARD_APP_ARGS(args, data);
00782 
00783    if (!str) {
00784       return -1;
00785    }
00786 
00787    if (args.argc < 2) {
00788       ast_log(LOG_ERROR, "Usage: %s(<varname>,<search-chars>[,<replace-char>])\n", cmd);
00789       return -1;
00790    }
00791 
00792    /* Decode escapes */
00793    ast_get_encoded_str(args.find, find, sizeof(find));
00794    ast_get_encoded_char(args.replace, replace, &unused);
00795 
00796    if (ast_strlen_zero(find) || ast_strlen_zero(args.varname)) {
00797       ast_log(LOG_ERROR, "The characters to search for and the variable name must not be empty.\n");
00798       return -1;
00799    }
00800 
00801    varsubst = alloca(strlen(args.varname) + 4);
00802    sprintf(varsubst, "${%s}", args.varname);
00803    ast_str_substitute_variables(&str, 0, chan, varsubst);
00804 
00805    if (!ast_str_strlen(str)) {
00806       /* Blank, nothing to replace */
00807       return -1;
00808    }
00809 
00810    ast_debug(3, "String to search: (%s)\n", ast_str_buffer(str));
00811    ast_debug(3, "Characters to find: (%s)\n", find);
00812    ast_debug(3, "Character to replace with: (%s)\n", replace);
00813 
00814    for (strptr = ast_str_buffer(str); *strptr; strptr++) {
00815       /* buf is already a mutable buffer, so we construct the result
00816        * directly there */
00817       if (strchr(find, *strptr)) {
00818          if (ast_strlen_zero(replace)) {
00819             /* Remove character */
00820             strcpy(strptr, strptr + 1); /* SAFE */
00821             strptr--;
00822          } else {
00823             /* Replace character */
00824             *strptr = *replace;
00825          }
00826       }
00827    }
00828 
00829    ast_str_set(buf, len, "%s", ast_str_buffer(str));
00830    return 0;
00831 }

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

Definition at line 1414 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.

01415 {
01416 #define beginning (cmd[0] == 'S') /* SHIFT */
01417    char *after, delimiter[2] = ",", *varsubst;
01418    size_t unused;
01419    struct ast_str *before = ast_str_thread_get(&result_buf, 16);
01420    char *(*search_func)(const char *s, int c) = (beginning ? strchr : strrchr);
01421    AST_DECLARE_APP_ARGS(args,
01422       AST_APP_ARG(var);
01423       AST_APP_ARG(delimiter);
01424    );
01425 
01426    if (!before) {
01427       return -1;
01428    }
01429 
01430    AST_STANDARD_APP_ARGS(args, data);
01431 
01432    if (ast_strlen_zero(args.var)) {
01433       ast_log(LOG_WARNING, "%s requires a variable name\n", cmd);
01434       return -1;
01435    }
01436 
01437    varsubst = alloca(strlen(args.var) + 4);
01438    sprintf(varsubst, "${%s}", args.var);
01439    ast_str_substitute_variables(&before, 0, chan, varsubst);
01440 
01441    if (args.argc > 1 && !ast_strlen_zero(args.delimiter)) {
01442       ast_get_encoded_char(args.delimiter, delimiter, &unused);
01443    }
01444 
01445    if (!ast_str_strlen(before)) {
01446       /* Nothing to pop */
01447       return -1;
01448    }
01449 
01450    if (!(after = search_func(ast_str_buffer(before), delimiter[0]))) {
01451       /* Only one entry in array */
01452       ast_str_set(buf, len, "%s", ast_str_buffer(before));
01453       pbx_builtin_setvar_helper(chan, args.var, "");
01454    } else {
01455       *after++ = '\0';
01456       ast_str_set(buf, len, "%s", beginning ? ast_str_buffer(before) : after);
01457       pbx_builtin_setvar_helper(chan, args.var, beginning ? after : ast_str_buffer(before));
01458    }
01459 
01460    return 0;
01461 #undef beginning
01462 }

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

Definition at line 1385 of file func_strings.c.

01386 {
01387    char *bufptr = buf, *dataptr = data;
01388 
01389    while ((bufptr < buf + buflen - 1) && (*bufptr++ = tolower(*dataptr++)));
01390 
01391    return 0;
01392 }

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

Definition at line 1394 of file func_strings.c.

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

01395 {
01396    char *bufptr, *dataptr = data;
01397 
01398    if (buflen > -1) {
01399       ast_str_make_space(buf, buflen > 0 ? buflen : strlen(data) + 1);
01400    }
01401    bufptr = ast_str_buffer(*buf);
01402    while ((bufptr < ast_str_buffer(*buf) + ast_str_size(*buf) - 1) && (*bufptr++ = tolower(*dataptr++)));
01403    ast_str_update(*buf);
01404 
01405    return 0;
01406 }

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

Definition at line 1356 of file func_strings.c.

01357 {
01358    char *bufptr = buf, *dataptr = data;
01359 
01360    while ((bufptr < buf + buflen - 1) && (*bufptr++ = toupper(*dataptr++)));
01361 
01362    return 0;
01363 }

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

Definition at line 1365 of file func_strings.c.

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

01366 {
01367    char *bufptr, *dataptr = data;
01368 
01369    if (buflen > -1) {
01370       ast_str_make_space(buf, buflen > 0 ? buflen : strlen(data) + 1);
01371    }
01372    bufptr = ast_str_buffer(*buf);
01373    while ((bufptr < ast_str_buffer(*buf) + ast_str_size(*buf) - 1) && (*bufptr++ = toupper(*dataptr++)));
01374    ast_str_update(*buf);
01375 
01376    return 0;
01377 }

static int unload_module ( void   )  [static]

Definition at line 1644 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.

01645 {
01646    int res = 0;
01647 
01648    AST_TEST_UNREGISTER(test_FIELDNUM);
01649    AST_TEST_UNREGISTER(test_FILTER);
01650    res |= ast_custom_function_unregister(&fieldqty_function);
01651    res |= ast_custom_function_unregister(&fieldnum_function);
01652    res |= ast_custom_function_unregister(&filter_function);
01653    res |= ast_custom_function_unregister(&replace_function);
01654    res |= ast_custom_function_unregister(&listfilter_function);
01655    res |= ast_custom_function_unregister(&regex_function);
01656    res |= ast_custom_function_unregister(&array_function);
01657    res |= ast_custom_function_unregister(&quote_function);
01658    res |= ast_custom_function_unregister(&csv_quote_function);
01659    res |= ast_custom_function_unregister(&len_function);
01660    res |= ast_custom_function_unregister(&strftime_function);
01661    res |= ast_custom_function_unregister(&strptime_function);
01662    res |= ast_custom_function_unregister(&eval_function);
01663    res |= ast_custom_function_unregister(&keypadhash_function);
01664    res |= ast_custom_function_unregister(&hashkeys_function);
01665    res |= ast_custom_function_unregister(&hash_function);
01666    res |= ast_unregister_application(app_clearhash);
01667    res |= ast_custom_function_unregister(&toupper_function);
01668    res |= ast_custom_function_unregister(&tolower_function);
01669    res |= ast_custom_function_unregister(&shift_function);
01670    res |= ast_custom_function_unregister(&pop_function);
01671    res |= ast_custom_function_unregister(&push_function);
01672    res |= ast_custom_function_unregister(&unshift_function);
01673    res |= ast_custom_function_unregister(&passthru_function);
01674 
01675    return res;
01676 }

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

Definition at line 1474 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.

01475 {
01476 #define beginning (cmd[0] == 'U') /* UNSHIFT */
01477    char delimiter[2] = ",", *varsubst;
01478    size_t unused;
01479    struct ast_str *buf, *previous_value;
01480    AST_DECLARE_APP_ARGS(args,
01481       AST_APP_ARG(var);
01482       AST_APP_ARG(delimiter);
01483    );
01484 
01485    if (!(buf = ast_str_thread_get(&result_buf, 16)) ||
01486       !(previous_value = ast_str_thread_get(&tmp_buf, 16))) {
01487       return -1;
01488    }
01489 
01490    AST_STANDARD_APP_ARGS(args, data);
01491 
01492    if (ast_strlen_zero(args.var)) {
01493       ast_log(LOG_WARNING, "%s requires a variable name\n", cmd);
01494       return -1;
01495    }
01496 
01497    if (args.argc > 1 && !ast_strlen_zero(args.delimiter)) {
01498       ast_get_encoded_char(args.delimiter, delimiter, &unused);
01499    }
01500 
01501    varsubst = alloca(strlen(args.var) + 4);
01502    sprintf(varsubst, "${%s}", args.var);
01503    ast_str_substitute_variables(&previous_value, 0, chan, varsubst);
01504 
01505    if (!ast_str_strlen(previous_value)) {
01506       ast_str_set(&buf, 0, "%s", new_value);
01507    } else {
01508       ast_str_set(&buf, 0, "%s%c%s",
01509          beginning ? new_value : ast_str_buffer(previous_value),
01510          delimiter[0],
01511          beginning ? ast_str_buffer(previous_value) : new_value);
01512    }
01513 
01514    pbx_builtin_setvar_helper(chan, args.var, ast_str_buffer(buf));
01515 
01516    return 0;
01517 #undef beginning
01518 }


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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 1712 of file func_strings.c.

char* app_clearhash = "ClearHash" [static]

Definition at line 883 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 1111 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 1712 of file func_strings.c.

struct ast_custom_function csv_quote_function [static]

Initial value:

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

Definition at line 1185 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 1310 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 552 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 473 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 763 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 1099 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 1105 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 1351 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 1202 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 681 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 1536 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 1469 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 1520 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 1150 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 875 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 833 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 43 of file func_strings.c.

struct ast_custom_function shift_function [static]

Initial value:

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

Definition at line 1464 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 1237 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 1279 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 44 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 1408 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 1379 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 1525 of file func_strings.c.

Referenced by load_module(), and unload_module().


Generated on Wed Apr 6 11:30:05 2011 for Asterisk - The Open Source Telephony Project by  doxygen 1.4.7