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chan_iax2: Minor improvements to documentation and warning messages.

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* Update Dial() documentation for IAX2 to include syntax for RSA
  public key names.
* Add additional details to a couple warnings to provide more context
  when an undecodable frame is received.

Resolves: #1206
(cherry picked from commit b3e3a0962e)
This commit is contained in:
Naveen Albert
2025-04-18 09:03:10 -04:00
committed by Asterisk Development Team
parent 9d2447afc7
commit d6a46d7082
2 changed files with 9 additions and 3 deletions
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9
channels/chan_iax2.c
View File

@@ -234,7 +234,10 @@
</info>
<info name="Dial_Resource" language="en_US" tech="IAX2">
<para>The general syntax is:</para>
<para><literal>Dial(IAX2/[username[:password]@]peer[:port][/exten[@context]][/options]</literal></para>
<para><literal>Dial(IAX2/[username[:password[:pubkey]]@]peer[:port][/exten[@context]][/options]</literal></para>
<para>The IAX username is optionally followed by either the secret or name of the keypair to use for RSA
authentication (within square brakcets). If both need to be provided (such as for encrypted calls that
are RSA authenticated), both may be specified in either order.</para>
<para>IAX2 optionally allows modifiers to be specified after the extension.</para>
<enumlist>
<enum name="a">
@@ -10381,7 +10384,9 @@ static int socket_process_helper(struct iax2_thread *thread)
if (f.datalen) {
if (f.frametype == AST_FRAME_IAX) {
if (iax_parse_ies(&ies, thread->buf + sizeof(struct ast_iax2_full_hdr), f.datalen)) {
ast_log(LOG_WARNING, "Undecodable frame received from '%s'\n", ast_sockaddr_stringify(&addr));
char subclass[40];
iax_frame_subclass2str(f.subclass.integer, subclass, sizeof(subclass));
ast_log(LOG_WARNING, "Undecodable %s frame received from '%s'\n", subclass, ast_sockaddr_stringify(&addr));
ast_variables_destroy(ies.vars);
return 1;
}

3
channels/iax2/parser.c
View File

@@ -812,7 +812,8 @@ int iax_parse_ies(struct iax_ies *ies, unsigned char *data, int datalen)
ie = data[0];
len = data[1];
if (len > datalen - 2) {
errorf("Information element length exceeds message size\n");
snprintf(tmp, sizeof(tmp), "Information element length %d exceeds message size %d\n", len, datalen - 2);
errorf(tmp);
return -1;
}
switch(ie) {