<p>Igor Goncharovsky has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.asterisk.org/c/asterisk/+/12807">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">chan_unistim: Fix clang warning: variable sized type not at end of a struct<br><br>On reading information about initial client packet unistim use dirty<br>implementation of destination ip address retrieval. This fix uses<br>CMSG_*(..) to get ip address and make clang compile without warning.<br><br>ASTERISK-25592 #close<br>Reported-by: Alexander Traud<br><br>Change-Id: Ic1fd34c2c2bcc951da65bf62e3f7a8adff8351b1<br>---<br>M channels/chan_unistim.c<br>1 file changed, 26 insertions(+), 17 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/07/12807/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/channels/chan_unistim.c b/channels/chan_unistim.c</span><br><span>index b846585..1ef373a 100644</span><br><span>--- a/channels/chan_unistim.c</span><br><span>+++ b/channels/chan_unistim.c</span><br><span>@@ -1004,27 +1004,35 @@</span><br><span> {</span><br><span> #ifdef HAVE_PKTINFO</span><br><span> int err;</span><br><span style="color: hsl(0, 100%, 40%);">- struct msghdr msg;</span><br><span style="color: hsl(0, 100%, 40%);">- struct {</span><br><span style="color: hsl(0, 100%, 40%);">- struct cmsghdr cm;</span><br><span style="color: hsl(0, 100%, 40%);">- int len;</span><br><span style="color: hsl(0, 100%, 40%);">- struct in_addr address;</span><br><span style="color: hsl(0, 100%, 40%);">- } ip_msg;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Zero out the structures before we use them */</span><br><span style="color: hsl(0, 100%, 40%);">- /* This sets several key values to NULL */</span><br><span style="color: hsl(0, 100%, 40%);">- memset(&msg, 0, sizeof(msg));</span><br><span style="color: hsl(0, 100%, 40%);">- memset(&ip_msg, 0, sizeof(ip_msg));</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Initialize the message structure */</span><br><span style="color: hsl(0, 100%, 40%);">- msg.msg_control = &ip_msg;</span><br><span style="color: hsl(0, 100%, 40%);">- msg.msg_controllen = sizeof(ip_msg);</span><br><span style="color: hsl(120, 100%, 40%);">+ char cmbuf[0x100];</span><br><span style="color: hsl(120, 100%, 40%);">+ struct cmsghdr *cmsg;</span><br><span style="color: hsl(120, 100%, 40%);">+ struct sockaddr_in peeraddr;</span><br><span style="color: hsl(120, 100%, 40%);">+ struct in_addr addr;</span><br><span style="color: hsl(120, 100%, 40%);">+ struct msghdr mh = {</span><br><span style="color: hsl(120, 100%, 40%);">+ .msg_name = &peeraddr,</span><br><span style="color: hsl(120, 100%, 40%);">+ .msg_namelen = sizeof(peeraddr),</span><br><span style="color: hsl(120, 100%, 40%);">+ .msg_control = cmbuf,</span><br><span style="color: hsl(120, 100%, 40%);">+ .msg_controllen = sizeof(cmbuf),</span><br><span style="color: hsl(120, 100%, 40%);">+ };</span><br><span style="color: hsl(120, 100%, 40%);">+ memset(&addr, 0, sizeof(addr));</span><br><span> /* Get info about the incoming packet */</span><br><span style="color: hsl(0, 100%, 40%);">- err = recvmsg(fd, &msg, MSG_PEEK);</span><br><span style="color: hsl(120, 100%, 40%);">+ err = recvmsg(fd, &mh, MSG_PEEK);</span><br><span> if (err == -1) {</span><br><span> ast_log(LOG_WARNING, "recvmsg returned an error: %s\n", strerror(errno));</span><br><span> }</span><br><span style="color: hsl(0, 100%, 40%);">- memcpy(&toAddr->sin_addr, &ip_msg.address, sizeof(struct in_addr));</span><br><span style="color: hsl(120, 100%, 40%);">+ for(cmsg = CMSG_FIRSTHDR(&mh);</span><br><span style="color: hsl(120, 100%, 40%);">+ cmsg != NULL;</span><br><span style="color: hsl(120, 100%, 40%);">+ cmsg = CMSG_NXTHDR(&mh, cmsg))</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (cmsg->cmsg_level == IPPROTO_IP && cmsg->cmsg_type == IP_PKTINFO) {</span><br><span style="color: hsl(120, 100%, 40%);">+ struct in_pktinfo *pkt = (struct in_pktinfo*)CMSG_DATA(cmsg);</span><br><span style="color: hsl(120, 100%, 40%);">+ addr = pkt->ipi_addr;</span><br><span style="color: hsl(120, 100%, 40%);">+ if (unistimdebug) {</span><br><span style="color: hsl(120, 100%, 40%);">+ ast_verb(0, "message received on address %s\n", ast_inet_ntoa(addr));</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ memcpy(&toAddr->sin_addr, &addr, sizeof(struct in_addr));</span><br><span> return err;</span><br><span> #else</span><br><span> memcpy(toAddr, &public_ip, sizeof(*toAddr));</span><br><span>@@ -1032,6 +1040,7 @@</span><br><span> #endif</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* Allocate memory & initialize structures for a new phone */</span><br><span> /* addr_from : ip address of the phone */</span><br><span> static struct unistimsession *create_client(const struct sockaddr_in *addr_from)</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.asterisk.org/c/asterisk/+/12807">change 12807</a>. 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<div style="display:none"> Gerrit-Project: asterisk </div>
<div style="display:none"> Gerrit-Branch: 13 </div>
<div style="display:none"> Gerrit-Change-Id: Ic1fd34c2c2bcc951da65bf62e3f7a8adff8351b1 </div>
<div style="display:none"> Gerrit-Change-Number: 12807 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Igor Goncharovsky <igor.goncharovsky@gmail.com> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>