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Merged revisions 245945 via svnmerge from

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https://origsvn.digium.com/svn/asterisk/trunk

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  r245945 | tilghman | 2010-02-10 08:06:12 -0600 (Wed, 10 Feb 2010) | 9 lines
  
  Merged revisions 245944 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r245944 | tilghman | 2010-02-10 07:37:13 -0600 (Wed, 10 Feb 2010) | 2 lines
    
    Include examples of FILTER usage in extension patterns where a "." may be a risk.
  ........
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@245946 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2010-02-10 14:09:28 +00:00
parent 29cea378d9
commit 1d393022c7
2 changed files with 16 additions and 8 deletions
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4
configs/extensions.conf.sample
View File

@@ -316,7 +316,7 @@ exten => _91700XXXXXXX,1,Dial(IAX2/${GLOBAL(IAXINFO)}@iaxtel.com/${EXTEN:1}@iaxt
; International long distance through trunk
;
exten => _9011.,1,Macro(dundi-e164,${EXTEN:4})
exten => _9011.,n,Dial(${GLOBAL(TRUNK)}/${EXTEN:${GLOBAL(TRUNKMSD)}})
exten => _9011.,n,Dial(${GLOBAL(TRUNK)}/${FILTER(0-9,${EXTEN:${GLOBAL(TRUNKMSD)}})})
[trunkld]
;
@@ -624,7 +624,7 @@ include => demo
; An extension like the one below can be used for FWD, Nikotel, sipgate etc.
; Note that you must have a [sipprovider] section in sip.conf
;
;exten => _41X.,1,Dial(SIP/${EXTEN:2}@sipprovider,,r)
;exten => _41X.,1,Dial(SIP/${FILTER(0-9,${EXTEN:2})}@sipprovider,,r)
; Real extensions would go here. Generally you want real extensions to be
; 4 or 5 digits long (although there is no such requirement) and start with a

20
funcs/func_strings.c
View File

@@ -90,8 +90,9 @@ static int filter(struct ast_channel *chan, const char *cmd, char *parse, char *
char *outbuf = buf, ac;
char allowed[256] = "";
size_t allowedlen = 0;
int32_t bitfield[8] = { 0, }; /* 256 bits */
AST_STANDARD_APP_ARGS(args, parse);
AST_STANDARD_RAW_ARGS(args, parse);
if (!args.string) {
ast_log(LOG_ERROR, "Usage: FILTER(<allowed-chars>,<string>)\n");
@@ -116,16 +117,23 @@ static int filter(struct ast_channel *chan, const char *cmd, char *parse, char *
* Looks a little strange, until you realize that we can overflow
* the size of a char.
*/
for (ac = c1; ac != c2 && allowedlen < sizeof(allowed) - 1; ac++)
allowed[allowedlen++] = ac;
allowed[allowedlen++] = ac;
for (ac = c1; ac != c2; ac++) {
bitfield[ac / 32] |= 1 << (ac % 32);
}
ast_debug(4, "c1=%d, c2=%d\n", c1, c2);
/* Decrement before the loop increment */
(args.allowed)--;
} else
allowed[allowedlen++] = c1;
} else {
bitfield[c1 / 32] |= 1 << (c1 % 32);
}
}
for (ac = 1; ac != 0; ac++) {
if (bitfield[ac / 32] & (1 << (ac % 32))) {
allowed[allowedlen++] = ac;
}
}
ast_debug(1, "Allowed: %s\n", allowed);