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Allow ENUM query functions to report lookup errors

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The ENUM dialplan functions do not report DNS query errors properly. It is
useful to differentiate between failed query (e.g. non-existent domain) vs. no
data records of the appropriate type. This is required to make overlapped
dialing work.

(closes issue ASTERISK-13769)
Review: https://reviewboard.asterisk.org/r/1355/
Patch-by: Timo Teras


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@331201 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2011-08-09 17:08:33 +00:00
parent 5fe104ddb9
commit c3bd5892a6
3 changed files with 9 additions and 5 deletions
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5
UPGRADE.txt
View File

@@ -22,7 +22,10 @@
From 10 to 12:
* No significant changes as of yet.
func_enum:
- ENUM query functions now return a count of -1 on lookup error to
differentiate between a failed query and a successful query with 0 results
matching the specified type.
From 1.8 to 10:

6
funcs/func_enum.c
View File

@@ -82,7 +82,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
<para>The number of the result that you want to retrieve.</para>
<para>Results start at <literal>1</literal>. If this argument is specified
as <literal>getnum</literal>, then it will return the total number of results
that are available.</para>
that are available or -1 on error.</para>
</parameter>
</syntax>
<description>
@@ -105,7 +105,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
<option name="c">
<para>Returns an integer count of the number of NAPTRs of a certain RR type.</para>
<para>Combination of <literal>c</literal> and Method-type of <literal>ALL</literal> will
return a count of all NAPTRs for the record.</para>
return a count of all NAPTRs for the record or -1 on error.</para>
</option>
<option name="u">
<para>Returns the full URI and does not strip off the URI-scheme.</para>
@@ -363,7 +363,7 @@ static int enum_result_read(struct ast_channel *chan, const char *cmd, char *dat
erds = datastore->data;
if (!strcasecmp(args.resultnum, "getnum")) {
snprintf(buf, len, "%u", erds->context->naptr_rrs_count);
snprintf(buf, len, "%d", erds->context->naptr_rrs_count);
res = 0;
goto finish;
}

3
main/enum.c
View File

@@ -856,6 +856,7 @@ int ast_get_enum(struct ast_channel *chan, const char *number, char *dst, int ds
if (ret < 0) {
ast_debug(1, "No such number found: %s (%s)\n", tmp, strerror(errno));
context->naptr_rrs_count = -1;
strcpy(dst, "0");
ret = 0;
}
@@ -896,7 +897,7 @@ int ast_get_enum(struct ast_channel *chan, const char *number, char *dst, int ds
} else if (!(context->options & ENUMLOOKUP_OPTIONS_COUNT)) {
context->dst[0] = 0;
} else if ((context->options & ENUMLOOKUP_OPTIONS_COUNT)) {
snprintf(context->dst, context->dstlen, "%d", context->count);
snprintf(context->dst, context->dstlen, "%d", context->naptr_rrs_count + context->count);
}
if (chan) {