Wed Apr 6 11:30:04 2011

Asterisk developer's documentation


func_base64.c File Reference

Use the base64 as functions. More...

#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/strings.h"

Go to the source code of this file.

Functions

static void __reg_module (void)
static void __unreg_module (void)
static int base64_buf_helper (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int base64_helper (struct ast_channel *chan, const char *cmd, char *data, char *buf, struct ast_str **str, ssize_t len)
static int base64_str_helper (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
static int load_module (void)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "base64 encode/decode 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 struct ast_module_infoast_module_info = &__mod_info
static struct ast_custom_function base64_decode_function
static struct ast_custom_function base64_encode_function


Detailed Description

Use the base64 as functions.

Definition in file func_base64.c.


Function Documentation

static void __reg_module ( void   )  [static]

Definition at line 155 of file func_base64.c.

static void __unreg_module ( void   )  [static]

Definition at line 155 of file func_base64.c.

static int base64_buf_helper ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 119 of file func_base64.c.

References base64_helper().

00121 {
00122    return base64_helper(chan, cmd, data, buf, NULL, len);
00123 }

static int base64_helper ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
struct ast_str **  str,
ssize_t  len 
) [static]

Definition at line 73 of file func_base64.c.

References ast_base64decode(), ast_base64encode(), ast_log(), ast_str_buffer(), ast_str_make_space(), ast_str_size(), ast_str_strlen(), ast_str_update(), ast_strlen_zero(), LOG_WARNING, and str.

Referenced by base64_buf_helper(), and base64_str_helper().

00075 {
00076    if (ast_strlen_zero(data)) {
00077       ast_log(LOG_WARNING, "Syntax: %s(<data>) - missing argument!\n", cmd);
00078       return -1;
00079    }
00080 
00081    if (cmd[7] == 'E') {
00082       if (buf) {
00083          ast_base64encode(buf, (unsigned char *) data, strlen(data), len);
00084       } else {
00085          if (len >= 0) {
00086             ast_str_make_space(str, len ? len : ast_str_strlen(*str) + strlen(data) * 4 / 3 + 2);
00087          }
00088          ast_base64encode(ast_str_buffer(*str) + ast_str_strlen(*str), (unsigned char *) data, strlen(data), ast_str_size(*str) - ast_str_strlen(*str));
00089          ast_str_update(*str);
00090       }
00091    } else {
00092       int decoded_len;
00093       if (buf) {
00094          decoded_len = ast_base64decode((unsigned char *) buf, data, len);
00095          /* add a terminating null at the end of buf, or at the
00096           * end of our decoded string, which ever is less */
00097          buf[decoded_len <= (len - 1) ? decoded_len : len - 1] = '\0';
00098       } else {
00099          if (len >= 0) {
00100             ast_str_make_space(str, len ? len : ast_str_strlen(*str) + strlen(data) * 3 / 4 + 2);
00101          }
00102          decoded_len = ast_base64decode((unsigned char *) ast_str_buffer(*str) + ast_str_strlen(*str), data, ast_str_size(*str) - ast_str_strlen(*str));
00103          if (len)
00104             /* add a terminating null at the end of our
00105              * buffer, or at the end of our decoded string,
00106              * which ever is less */
00107             ast_str_buffer(*str)[decoded_len <= (len - 1) ? decoded_len : len - 1] = '\0';
00108          else
00109             /* space for the null is allocated above */
00110             ast_str_buffer(*str)[decoded_len] = '\0';
00111 
00112          ast_str_update(*str);
00113       }
00114    }
00115 
00116    return 0;
00117 }

static int base64_str_helper ( struct ast_channel chan,
const char *  cmd,
char *  data,
struct ast_str **  buf,
ssize_t  len 
) [static]

Definition at line 125 of file func_base64.c.

References base64_helper().

00127 {
00128    return base64_helper(chan, cmd, data, NULL, buf, len);
00129 }

static int load_module ( void   )  [static]

Definition at line 149 of file func_base64.c.

References ast_custom_function_register, base64_decode_function, and base64_encode_function.

static int unload_module ( void   )  [static]

Definition at line 143 of file func_base64.c.

References ast_custom_function_unregister(), base64_decode_function, and base64_encode_function.


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "base64 encode/decode 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 155 of file func_base64.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 155 of file func_base64.c.

struct ast_custom_function base64_decode_function [static]

Initial value:

 {
   .name = "BASE64_DECODE",
   .read = base64_buf_helper,
   .read2 = base64_str_helper,
}

Definition at line 137 of file func_base64.c.

Referenced by load_module(), and unload_module().

struct ast_custom_function base64_encode_function [static]

Initial value:

 {
   .name = "BASE64_ENCODE",
   .read = base64_buf_helper,
   .read2 = base64_str_helper,
}

Definition at line 131 of file func_base64.c.

Referenced by load_module(), and unload_module().


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