mirror of https://github.com/moparisthebest/curl
Peter Sylvester found a flaw in the connect code for ipv6-enabled hosts.
I guess it seldomly happens on linux and that's why it wasn't found before. He used Solaris to notice it. I took the opportunity to rewrite the Curl_connecthost() slightly to feature less duplicate code in the two different versions (ipv4/ipv6).
This commit is contained in:
Daniel Stenberg
parent
b9d3c71178
commit
43bb20461f
16
CHANGES
16
CHANGES
|
|
@ -7,6 +7,22 @@
|
|||
Changelog
|
||||
|
||||
|
||||
Daniel (13 November)
|
||||
- Default Content-Type for parts in multipart formposts has changed to
|
||||
"application/octet-stream". This seems more appropriate, and I believe
|
||||
mozilla and the likes do this. In the same area: .html files now get
|
||||
text/html as Content-Type. (Pointed out in bug report #839806)
|
||||
|
||||
- Gisle Vanem corrected the --progress-bar output by doing a flush of the
|
||||
output, which apparently makes it look better on at least windows, but
|
||||
possibly other platforms too.
|
||||
|
||||
- Peter Sylvester identified a problem in the connect code, which made the
|
||||
multi interface on a ipv6-enabled solaris box do bad. Test case 504 to be
|
||||
specific. I've spent some time to clean-up the Curl_connecthost() function
|
||||
now to use less duplicated code for the two different sections: ipv6 and
|
||||
ipv4.
|
||||
|
||||
Daniel (11 November)
|
||||
- Added CURLOPT_NETRC_FILE. Use this to tell libcurl which file to use instead
|
||||
of trying to find a .netrc in the current user's home directory. The
|
||||
|
|
|
|||
186
lib/connect.c
186
lib/connect.c
|
|
@ -473,6 +473,10 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
struct timeval after;
|
||||
struct timeval before = Curl_tvnow();
|
||||
|
||||
#ifdef ENABLE_IPV6
|
||||
struct addrinfo *ai;
|
||||
#endif
|
||||
|
||||
/*************************************************************
|
||||
* Figure out what maximum time we have left
|
||||
*************************************************************/
|
||||
|
|
@ -513,118 +517,21 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
}
|
||||
|
||||
hostname = data->change.proxy?conn->proxyhost:conn->hostname;
|
||||
infof(data, "About to connect() to %s%s%s:%d\n",
|
||||
conn->bits.ipv6_ip?"[":"",
|
||||
hostname,
|
||||
conn->bits.ipv6_ip?"]":"",
|
||||
port);
|
||||
infof(data, "About to connect() to %s port %d\n",
|
||||
hostname, port);
|
||||
|
||||
#ifdef ENABLE_IPV6
|
||||
/*
|
||||
* Connecting with IPv6 support is so much easier and cleanly done
|
||||
* Connecting with a getaddrinfo chain
|
||||
*/
|
||||
{
|
||||
struct addrinfo *ai;
|
||||
port =0; /* prevent compiler warning */
|
||||
|
||||
for (ai = remotehost->addr; ai; ai = ai->ai_next, aliasindex++) {
|
||||
sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
|
||||
if (sockfd < 0)
|
||||
continue;
|
||||
|
||||
if(conn->data->set.device) {
|
||||
/* user selected to bind the outgoing socket to a specified "device"
|
||||
before doing connect */
|
||||
CURLcode res = bindlocal(conn, sockfd);
|
||||
if(res)
|
||||
return res;
|
||||
}
|
||||
|
||||
/* set socket non-blocking */
|
||||
Curl_nonblock(sockfd, TRUE);
|
||||
|
||||
rc = connect(sockfd, ai->ai_addr, ai->ai_addrlen);
|
||||
|
||||
if(-1 == rc) {
|
||||
int error=Curl_ourerrno();
|
||||
|
||||
switch (error) {
|
||||
case EINPROGRESS:
|
||||
case EWOULDBLOCK:
|
||||
#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK
|
||||
/* On some platforms EAGAIN and EWOULDBLOCK are the
|
||||
* same value, and on others they are different, hence
|
||||
* the odd #if
|
||||
*/
|
||||
case EAGAIN:
|
||||
#endif
|
||||
case EINTR:
|
||||
/* asynchronous connect, wait for connect or timeout */
|
||||
if(data->state.used_interface == Curl_if_multi)
|
||||
/* don't hang when doing multi */
|
||||
timeout_ms = 0;
|
||||
|
||||
rc = waitconnect(sockfd, timeout_ms);
|
||||
break;
|
||||
case ECONNREFUSED: /* no one listening */
|
||||
default:
|
||||
/* unknown error, fallthrough and try another address! */
|
||||
failf(data, "Failed connect to %s: %d", hostname, error);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if(0 == rc) {
|
||||
/* we might be connected, if the socket says it is OK! Ask it! */
|
||||
if(verifyconnect(sockfd)) {
|
||||
/* we are connected, awesome! */
|
||||
*connected = TRUE; /* this is truly a connect */
|
||||
break;
|
||||
}
|
||||
failf(data, "socket error");
|
||||
/* we are _not_ connected, it was a false alert, continue please */
|
||||
}
|
||||
else if(2 == rc)
|
||||
/* waitconnect() returned error */
|
||||
;
|
||||
else if(data->state.used_interface == Curl_if_multi) {
|
||||
/* When running the multi interface, we bail out here */
|
||||
rc = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
/* connect failed or timed out */
|
||||
sclose(sockfd);
|
||||
sockfd = -1;
|
||||
|
||||
/* get a new timeout for next attempt */
|
||||
after = Curl_tvnow();
|
||||
timeout_ms -= Curl_tvdiff(after, before);
|
||||
if(timeout_ms < 0) {
|
||||
failf(data, "connect() timed out!");
|
||||
return CURLE_OPERATION_TIMEOUTED;
|
||||
}
|
||||
before = after;
|
||||
continue;
|
||||
}
|
||||
for (ai = remotehost->addr; ai; ai = ai->ai_next, aliasindex++) {
|
||||
sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
|
||||
if (sockfd < 0)
|
||||
return CURLE_COULDNT_CONNECT;
|
||||
|
||||
/* leave the socket in non-blocking mode */
|
||||
|
||||
if(addr)
|
||||
*addr = ai; /* the address we ended up connected to */
|
||||
}
|
||||
continue;
|
||||
#else
|
||||
/*
|
||||
* Connecting with IPv4-only support
|
||||
* Connecting with old style IPv4-only support
|
||||
*/
|
||||
if(!remotehost->addr->h_addr_list[0]) {
|
||||
/* If there is no addresses in the address list, then we return
|
||||
error right away */
|
||||
failf(data, "no address available");
|
||||
return CURLE_COULDNT_CONNECT;
|
||||
}
|
||||
|
||||
/* This is the loop that attempts to connect to all IP-addresses we
|
||||
know for the given host. One by one. */
|
||||
|
|
@ -639,7 +546,16 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
failf(data, "couldn't create socket");
|
||||
return CURLE_COULDNT_CONNECT; /* big time error */
|
||||
}
|
||||
|
||||
|
||||
/* nasty address work before connect can be made */
|
||||
memset((char *) &serv_addr, '\0', sizeof(serv_addr));
|
||||
memcpy((char *)&(serv_addr.sin_addr),
|
||||
(struct in_addr *)remotehost->addr->h_addr_list[aliasindex],
|
||||
sizeof(struct in_addr));
|
||||
serv_addr.sin_family = remotehost->addr->h_addrtype;
|
||||
serv_addr.sin_port = htons((unsigned short)port);
|
||||
#endif
|
||||
|
||||
if(conn->data->set.device) {
|
||||
/* user selected to bind the outgoing socket to a specified "device"
|
||||
before doing connect */
|
||||
|
|
@ -648,19 +564,16 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
return res;
|
||||
}
|
||||
|
||||
/* Convert socket to non-blocking type */
|
||||
/* set socket non-blocking */
|
||||
Curl_nonblock(sockfd, TRUE);
|
||||
|
||||
/* do this nasty work to do the connect */
|
||||
memset((char *) &serv_addr, '\0', sizeof(serv_addr));
|
||||
memcpy((char *)&(serv_addr.sin_addr),
|
||||
(struct in_addr *)remotehost->addr->h_addr_list[aliasindex],
|
||||
sizeof(struct in_addr));
|
||||
serv_addr.sin_family = remotehost->addr->h_addrtype;
|
||||
serv_addr.sin_port = htons((unsigned short)port);
|
||||
|
||||
rc = connect(sockfd, (struct sockaddr *)&serv_addr,
|
||||
sizeof(serv_addr));
|
||||
rc = connect(sockfd,
|
||||
#ifdef ENABLE_IPV6
|
||||
ai->ai_addr, ai->ai_addrlen
|
||||
#else
|
||||
(struct sockaddr *)&serv_addr, sizeof(serv_addr)
|
||||
#endif
|
||||
);
|
||||
|
||||
if(-1 == rc) {
|
||||
int error=Curl_ourerrno();
|
||||
|
|
@ -679,7 +592,7 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
if(data->state.used_interface == Curl_if_multi)
|
||||
/* don't hang when doing multi */
|
||||
timeout_ms = 0;
|
||||
|
||||
|
||||
rc = waitconnect(sockfd, timeout_ms);
|
||||
break;
|
||||
default:
|
||||
|
|
@ -698,7 +611,7 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
rc = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
if(0 == rc) {
|
||||
if (verifyconnect(sockfd)) {
|
||||
/* we are connected, awesome! */
|
||||
|
|
@ -709,22 +622,20 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
rc = -1;
|
||||
}
|
||||
|
||||
if(0 != rc) {
|
||||
/* get a new timeout for next attempt */
|
||||
sclose(sockfd);
|
||||
after = Curl_tvnow();
|
||||
timeout_ms -= Curl_tvdiff(after, before);
|
||||
if(timeout_ms < 0) {
|
||||
failf(data, "Connect timeout on IP number %d", aliasindex+1);
|
||||
break;
|
||||
}
|
||||
before = after;
|
||||
continue; /* try next address */
|
||||
}
|
||||
break;
|
||||
}
|
||||
/* connect failed or timed out */
|
||||
sclose(sockfd);
|
||||
sockfd = -1;
|
||||
|
||||
if(0 != rc) {
|
||||
/* get a new timeout for next attempt */
|
||||
after = Curl_tvnow();
|
||||
timeout_ms -= Curl_tvdiff(after, before);
|
||||
if(timeout_ms < 0) {
|
||||
failf(data, "connect() timed out!");
|
||||
return CURLE_OPERATION_TIMEOUTED;
|
||||
}
|
||||
before = after;
|
||||
}
|
||||
if (sockfd < 0) {
|
||||
/* no good connect was made */
|
||||
*sockconn = -1;
|
||||
failf(data, "Connect failed");
|
||||
|
|
@ -733,10 +644,14 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
|
||||
/* leave the socket in non-blocking mode */
|
||||
|
||||
if(addr)
|
||||
/* this is the address we've connected to */
|
||||
/* store the address we use */
|
||||
if(addr) {
|
||||
#ifdef ENABLE_IPV6
|
||||
*addr = ai;
|
||||
#else
|
||||
*addr = (struct in_addr *)remotehost->addr->h_addr_list[aliasindex];
|
||||
#endif
|
||||
}
|
||||
|
||||
/* allow NULL-pointers to get passed in */
|
||||
if(sockconn)
|
||||
|
|
@ -744,4 +659,3 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
|
|||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue