From 02f5c2ed34d16c9809b488b5a5082c40bb0f3188 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Thu, 27 Aug 2015 21:12:00 +0200 Subject: Remove libcurl as it was replaced by WinHTTP. --- libcurl/src/lib/connect.c | 1377 --------------------------------------------- 1 file changed, 1377 deletions(-) delete mode 100644 libcurl/src/lib/connect.c (limited to 'libcurl/src/lib/connect.c') diff --git a/libcurl/src/lib/connect.c b/libcurl/src/lib/connect.c deleted file mode 100644 index eaaac4e..0000000 --- a/libcurl/src/lib/connect.c +++ /dev/null @@ -1,1377 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2015, Daniel Stenberg, , et al. - * - * This software is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at http://curl.haxx.se/docs/copyright.html. - * - * You may opt to use, copy, modify, merge, publish, distribute and/or sell - * copies of the Software, and permit persons to whom the Software is - * furnished to do so, under the terms of the COPYING file. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ***************************************************************************/ - -#include "curl_setup.h" - -#ifdef HAVE_NETINET_IN_H -#include /* may need it */ -#endif -#ifdef HAVE_SYS_UN_H -#include /* for sockaddr_un */ -#endif -#ifdef HAVE_NETINET_TCP_H -#include /* for TCP_NODELAY */ -#endif -#ifdef HAVE_SYS_IOCTL_H -#include -#endif -#ifdef HAVE_NETDB_H -#include -#endif -#ifdef HAVE_FCNTL_H -#include -#endif -#ifdef HAVE_ARPA_INET_H -#include -#endif - -#if (defined(HAVE_IOCTL_FIONBIO) && defined(NETWARE)) -#include -#endif -#ifdef NETWARE -#undef in_addr_t -#define in_addr_t unsigned long -#endif -#ifdef __VMS -#include -#include -#endif - -#include "curl_printf.h" -#include "urldata.h" -#include "sendf.h" -#include "if2ip.h" -#include "strerror.h" -#include "connect.h" -#include "select.h" -#include "url.h" /* for Curl_safefree() */ -#include "multiif.h" -#include "sockaddr.h" /* required for Curl_sockaddr_storage */ -#include "inet_ntop.h" -#include "inet_pton.h" -#include "vtls/vtls.h" /* for Curl_ssl_check_cxn() */ -#include "progress.h" -#include "warnless.h" -#include "conncache.h" -#include "multihandle.h" - -/* The last #include files should be: */ -#include "curl_memory.h" -#include "memdebug.h" - -#ifdef __SYMBIAN32__ -/* This isn't actually supported under Symbian OS */ -#undef SO_NOSIGPIPE -#endif - -static bool verifyconnect(curl_socket_t sockfd, int *error); - -#if defined(__DragonFly__) || defined(HAVE_WINSOCK_H) -/* DragonFlyBSD and Windows use millisecond units */ -#define KEEPALIVE_FACTOR(x) (x *= 1000) -#else -#define KEEPALIVE_FACTOR(x) -#endif - -#if defined(HAVE_WINSOCK2_H) && !defined(SIO_KEEPALIVE_VALS) -#define SIO_KEEPALIVE_VALS _WSAIOW(IOC_VENDOR,4) - -struct tcp_keepalive { - u_long onoff; - u_long keepalivetime; - u_long keepaliveinterval; -}; -#endif - -static void -tcpkeepalive(struct SessionHandle *data, - curl_socket_t sockfd) -{ - int optval = data->set.tcp_keepalive?1:0; - - /* only set IDLE and INTVL if setting KEEPALIVE is successful */ - if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, - (void *)&optval, sizeof(optval)) < 0) { - infof(data, "Failed to set SO_KEEPALIVE on fd %d\n", sockfd); - } - else { -#if defined(SIO_KEEPALIVE_VALS) - struct tcp_keepalive vals; - DWORD dummy; - vals.onoff = 1; - optval = curlx_sltosi(data->set.tcp_keepidle); - KEEPALIVE_FACTOR(optval); - vals.keepalivetime = optval; - optval = curlx_sltosi(data->set.tcp_keepintvl); - KEEPALIVE_FACTOR(optval); - vals.keepaliveinterval = optval; - if(WSAIoctl(sockfd, SIO_KEEPALIVE_VALS, (LPVOID) &vals, sizeof(vals), - NULL, 0, &dummy, NULL, NULL) != 0) { - infof(data, "Failed to set SIO_KEEPALIVE_VALS on fd %d: %d\n", - (int)sockfd, WSAGetLastError()); - } -#else -#ifdef TCP_KEEPIDLE - optval = curlx_sltosi(data->set.tcp_keepidle); - KEEPALIVE_FACTOR(optval); - if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPIDLE, - (void *)&optval, sizeof(optval)) < 0) { - infof(data, "Failed to set TCP_KEEPIDLE on fd %d\n", sockfd); - } -#endif -#ifdef TCP_KEEPINTVL - optval = curlx_sltosi(data->set.tcp_keepintvl); - KEEPALIVE_FACTOR(optval); - if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPINTVL, - (void *)&optval, sizeof(optval)) < 0) { - infof(data, "Failed to set TCP_KEEPINTVL on fd %d\n", sockfd); - } -#endif -#ifdef TCP_KEEPALIVE - /* Mac OS X style */ - optval = curlx_sltosi(data->set.tcp_keepidle); - KEEPALIVE_FACTOR(optval); - if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPALIVE, - (void *)&optval, sizeof(optval)) < 0) { - infof(data, "Failed to set TCP_KEEPALIVE on fd %d\n", sockfd); - } -#endif -#endif - } -} - -static CURLcode -singleipconnect(struct connectdata *conn, - const Curl_addrinfo *ai, /* start connecting to this */ - curl_socket_t *sock); - -/* - * Curl_timeleft() returns the amount of milliseconds left allowed for the - * transfer/connection. If the value is negative, the timeout time has already - * elapsed. - * - * The start time is stored in progress.t_startsingle - as set with - * Curl_pgrsTime(..., TIMER_STARTSINGLE); - * - * If 'nowp' is non-NULL, it points to the current time. - * 'duringconnect' is FALSE if not during a connect, as then of course the - * connect timeout is not taken into account! - * - * @unittest: 1303 - */ -CURL_STATIC long Curl_timeleft(struct SessionHandle *data, - struct timeval *nowp, - bool duringconnect) -{ - int timeout_set = 0; - long timeout_ms = duringconnect?DEFAULT_CONNECT_TIMEOUT:0; - struct timeval now; - - /* if a timeout is set, use the most restrictive one */ - - if(data->set.timeout > 0) - timeout_set |= 1; - if(duringconnect && (data->set.connecttimeout > 0)) - timeout_set |= 2; - - switch (timeout_set) { - case 1: - timeout_ms = data->set.timeout; - break; - case 2: - timeout_ms = data->set.connecttimeout; - break; - case 3: - if(data->set.timeout < data->set.connecttimeout) - timeout_ms = data->set.timeout; - else - timeout_ms = data->set.connecttimeout; - break; - default: - /* use the default */ - if(!duringconnect) - /* if we're not during connect, there's no default timeout so if we're - at zero we better just return zero and not make it a negative number - by the math below */ - return 0; - break; - } - - if(!nowp) { - now = Curl_tvnow(); - nowp = &now; - } - - /* subtract elapsed time */ - if(duringconnect) - /* since this most recent connect started */ - timeout_ms -= Curl_tvdiff(*nowp, data->progress.t_startsingle); - else - /* since the entire operation started */ - timeout_ms -= Curl_tvdiff(*nowp, data->progress.t_startop); - if(!timeout_ms) - /* avoid returning 0 as that means no timeout! */ - return -1; - - return timeout_ms; -} - -static CURLcode bindlocal(struct connectdata *conn, - curl_socket_t sockfd, int af, unsigned int scope) -{ - struct SessionHandle *data = conn->data; - - struct Curl_sockaddr_storage sa; - struct sockaddr *sock = (struct sockaddr *)&sa; /* bind to this address */ - curl_socklen_t sizeof_sa = 0; /* size of the data sock points to */ - struct sockaddr_in *si4 = (struct sockaddr_in *)&sa; -#ifdef ENABLE_IPV6 - struct sockaddr_in6 *si6 = (struct sockaddr_in6 *)&sa; -#endif - - struct Curl_dns_entry *h=NULL; - unsigned short port = data->set.localport; /* use this port number, 0 for - "random" */ - /* how many port numbers to try to bind to, increasing one at a time */ - int portnum = data->set.localportrange; - const char *dev = data->set.str[STRING_DEVICE]; - int error; - - /************************************************************* - * Select device to bind socket to - *************************************************************/ - if(!dev && !port) - /* no local kind of binding was requested */ - return CURLE_OK; - - memset(&sa, 0, sizeof(struct Curl_sockaddr_storage)); - - if(dev && (strlen(dev)<255) ) { - char myhost[256] = ""; - int done = 0; /* -1 for error, 1 for address found */ - bool is_interface = FALSE; - bool is_host = FALSE; - static const char *if_prefix = "if!"; - static const char *host_prefix = "host!"; - - if(strncmp(if_prefix, dev, strlen(if_prefix)) == 0) { - dev += strlen(if_prefix); - is_interface = TRUE; - } - else if(strncmp(host_prefix, dev, strlen(host_prefix)) == 0) { - dev += strlen(host_prefix); - is_host = TRUE; - } - - /* interface */ - if(!is_host) { - switch(Curl_if2ip(af, scope, conn->scope_id, dev, - myhost, sizeof(myhost))) { - case IF2IP_NOT_FOUND: - if(is_interface) { - /* Do not fall back to treating it as a host name */ - failf(data, "Couldn't bind to interface '%s'", dev); - return CURLE_INTERFACE_FAILED; - } - break; - case IF2IP_AF_NOT_SUPPORTED: - /* Signal the caller to try another address family if available */ - return CURLE_UNSUPPORTED_PROTOCOL; - case IF2IP_FOUND: - is_interface = TRUE; - /* - * We now have the numerical IP address in the 'myhost' buffer - */ - infof(data, "Local Interface %s is ip %s using address family %i\n", - dev, myhost, af); - done = 1; - -#ifdef SO_BINDTODEVICE - /* I am not sure any other OSs than Linux that provide this feature, - * and at the least I cannot test. --Ben - * - * This feature allows one to tightly bind the local socket to a - * particular interface. This will force even requests to other - * local interfaces to go out the external interface. - * - * - * Only bind to the interface when specified as interface, not just - * as a hostname or ip address. - */ - if(setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE, - dev, (curl_socklen_t)strlen(dev)+1) != 0) { - error = SOCKERRNO; - infof(data, "SO_BINDTODEVICE %s failed with errno %d: %s;" - " will do regular bind\n", - dev, error, Curl_strerror(conn, error)); - /* This is typically "errno 1, error: Operation not permitted" if - you're not running as root or another suitable privileged - user */ - } -#endif - break; - } - } - if(!is_interface) { - /* - * This was not an interface, resolve the name as a host name - * or IP number - * - * Temporarily force name resolution to use only the address type - * of the connection. The resolve functions should really be changed - * to take a type parameter instead. - */ - long ipver = conn->ip_version; - int rc; - - if(af == AF_INET) - conn->ip_version = CURL_IPRESOLVE_V4; -#ifdef ENABLE_IPV6 - else if(af == AF_INET6) - conn->ip_version = CURL_IPRESOLVE_V6; -#endif - - rc = Curl_resolv(conn, dev, 0, &h); - if(rc == CURLRESOLV_PENDING) - (void)Curl_resolver_wait_resolv(conn, &h); - conn->ip_version = ipver; - - if(h) { - /* convert the resolved address, sizeof myhost >= INET_ADDRSTRLEN */ - Curl_printable_address(h->addr, myhost, sizeof(myhost)); - infof(data, "Name '%s' family %i resolved to '%s' family %i\n", - dev, af, myhost, h->addr->ai_family); - Curl_resolv_unlock(data, h); - done = 1; - } - else { - /* - * provided dev was no interface (or interfaces are not supported - * e.g. solaris) no ip address and no domain we fail here - */ - done = -1; - } - } - - if(done > 0) { -#ifdef ENABLE_IPV6 - /* IPv6 address */ - if(af == AF_INET6) { -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID - char *scope_ptr = strchr(myhost, '%'); - if(scope_ptr) - *(scope_ptr++) = 0; -#endif - if(Curl_inet_pton(AF_INET6, myhost, &si6->sin6_addr) > 0) { - si6->sin6_family = AF_INET6; - si6->sin6_port = htons(port); -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID - if(scope_ptr) - /* The "myhost" string either comes from Curl_if2ip or from - Curl_printable_address. The latter returns only numeric scope - IDs and the former returns none at all. So the scope ID, if - present, is known to be numeric */ - si6->sin6_scope_id = atoi(scope_ptr); -#endif - } - sizeof_sa = sizeof(struct sockaddr_in6); - } - else -#endif - /* IPv4 address */ - if((af == AF_INET) && - (Curl_inet_pton(AF_INET, myhost, &si4->sin_addr) > 0)) { - si4->sin_family = AF_INET; - si4->sin_port = htons(port); - sizeof_sa = sizeof(struct sockaddr_in); - } - } - - if(done < 1) { - failf(data, "Couldn't bind to '%s'", dev); - return CURLE_INTERFACE_FAILED; - } - } - else { - /* no device was given, prepare sa to match af's needs */ -#ifdef ENABLE_IPV6 - if(af == AF_INET6) { - si6->sin6_family = AF_INET6; - si6->sin6_port = htons(port); - sizeof_sa = sizeof(struct sockaddr_in6); - } - else -#endif - if(af == AF_INET) { - si4->sin_family = AF_INET; - si4->sin_port = htons(port); - sizeof_sa = sizeof(struct sockaddr_in); - } - } - - for(;;) { - if(bind(sockfd, sock, sizeof_sa) >= 0) { - /* we succeeded to bind */ - struct Curl_sockaddr_storage add; - curl_socklen_t size = sizeof(add); - memset(&add, 0, sizeof(struct Curl_sockaddr_storage)); - if(getsockname(sockfd, (struct sockaddr *) &add, &size) < 0) { - data->state.os_errno = error = SOCKERRNO; - failf(data, "getsockname() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - return CURLE_INTERFACE_FAILED; - } - infof(data, "Local port: %hu\n", port); - conn->bits.bound = TRUE; - return CURLE_OK; - } - - if(--portnum > 0) { - infof(data, "Bind to local port %hu failed, trying next\n", port); - port++; /* try next port */ - /* We re-use/clobber the port variable here below */ - if(sock->sa_family == AF_INET) - si4->sin_port = ntohs(port); -#ifdef ENABLE_IPV6 - else - si6->sin6_port = ntohs(port); -#endif - } - else - break; - } - - data->state.os_errno = error = SOCKERRNO; - failf(data, "bind failed with errno %d: %s", - error, Curl_strerror(conn, error)); - - return CURLE_INTERFACE_FAILED; -} - -/* - * verifyconnect() returns TRUE if the connect really has happened. - */ -static bool verifyconnect(curl_socket_t sockfd, int *error) -{ - bool rc = TRUE; -#ifdef SO_ERROR - int err = 0; - curl_socklen_t errSize = sizeof(err); - -#ifdef WIN32 - /* - * In October 2003 we effectively nullified this function on Windows due to - * problems with it using all CPU in multi-threaded cases. - * - * In May 2004, we bring it back to offer more info back on connect failures. - * Gisle Vanem could reproduce the former problems with this function, but - * could avoid them by adding this SleepEx() call below: - * - * "I don't have Rational Quantify, but the hint from his post was - * ntdll::NtRemoveIoCompletion(). So I'd assume the SleepEx (or maybe - * just Sleep(0) would be enough?) would release whatever - * mutex/critical-section the ntdll call is waiting on. - * - * Someone got to verify this on Win-NT 4.0, 2000." - */ - -#ifdef _WIN32_WCE - Sleep(0); -#elif !defined(CURL_WINRT) - SleepEx(0, FALSE); -#endif - -#endif - - if(0 != getsockopt(sockfd, SOL_SOCKET, SO_ERROR, (void *)&err, &errSize)) - err = SOCKERRNO; -#ifdef _WIN32_WCE - /* Old WinCE versions don't support SO_ERROR */ - if(WSAENOPROTOOPT == err) { - SET_SOCKERRNO(0); - err = 0; - } -#endif -#ifdef __minix - /* Minix 3.1.x doesn't support getsockopt on UDP sockets */ - if(EBADIOCTL == err) { - SET_SOCKERRNO(0); - err = 0; - } -#endif - if((0 == err) || (EISCONN == err)) - /* we are connected, awesome! */ - rc = TRUE; - else - /* This wasn't a successful connect */ - rc = FALSE; - if(error) - *error = err; -#else - (void)sockfd; - if(error) - *error = SOCKERRNO; -#endif - return rc; -} - -/* Used within the multi interface. Try next IP address, return TRUE if no - more address exists or error */ -static CURLcode trynextip(struct connectdata *conn, - int sockindex, - int tempindex) -{ - const int other = tempindex ^ 1; - CURLcode result = CURLE_COULDNT_CONNECT; - - /* First clean up after the failed socket. - Don't close it yet to ensure that the next IP's socket gets a different - file descriptor, which can prevent bugs when the curl_multi_socket_action - interface is used with certain select() replacements such as kqueue. */ - curl_socket_t fd_to_close = conn->tempsock[tempindex]; - conn->tempsock[tempindex] = CURL_SOCKET_BAD; - - if(sockindex == FIRSTSOCKET) { - Curl_addrinfo *ai = NULL; - int family = AF_UNSPEC; - - if(conn->tempaddr[tempindex]) { - /* find next address in the same protocol family */ - family = conn->tempaddr[tempindex]->ai_family; - ai = conn->tempaddr[tempindex]->ai_next; - } -#ifdef ENABLE_IPV6 - else if(conn->tempaddr[0]) { - /* happy eyeballs - try the other protocol family */ - int firstfamily = conn->tempaddr[0]->ai_family; - family = (firstfamily == AF_INET) ? AF_INET6 : AF_INET; - ai = conn->tempaddr[0]->ai_next; - } -#endif - - while(ai) { - if(conn->tempaddr[other]) { - /* we can safely skip addresses of the other protocol family */ - while(ai && ai->ai_family != family) - ai = ai->ai_next; - } - - if(ai) { - result = singleipconnect(conn, ai, &conn->tempsock[tempindex]); - if(result == CURLE_COULDNT_CONNECT) { - ai = ai->ai_next; - continue; - } - - conn->tempaddr[tempindex] = ai; - } - break; - } - } - - if(fd_to_close != CURL_SOCKET_BAD) - Curl_closesocket(conn, fd_to_close); - - return result; -} - -/* Copies connection info into the session handle to make it available - when the session handle is no longer associated with a connection. */ -CURL_STATIC void Curl_persistconninfo(struct connectdata *conn) -{ - memcpy(conn->data->info.conn_primary_ip, conn->primary_ip, MAX_IPADR_LEN); - memcpy(conn->data->info.conn_local_ip, conn->local_ip, MAX_IPADR_LEN); - conn->data->info.conn_primary_port = conn->primary_port; - conn->data->info.conn_local_port = conn->local_port; -} - -/* retrieves ip address and port from a sockaddr structure */ -static bool getaddressinfo(struct sockaddr* sa, char* addr, - long* port) -{ - unsigned short us_port; - struct sockaddr_in* si = NULL; -#ifdef ENABLE_IPV6 - struct sockaddr_in6* si6 = NULL; -#endif -#if defined(HAVE_SYS_UN_H) && defined(AF_UNIX) - struct sockaddr_un* su = NULL; -#endif - - switch (sa->sa_family) { - case AF_INET: - si = (struct sockaddr_in*) sa; - if(Curl_inet_ntop(sa->sa_family, &si->sin_addr, - addr, MAX_IPADR_LEN)) { - us_port = ntohs(si->sin_port); - *port = us_port; - return TRUE; - } - break; -#ifdef ENABLE_IPV6 - case AF_INET6: - si6 = (struct sockaddr_in6*)sa; - if(Curl_inet_ntop(sa->sa_family, &si6->sin6_addr, - addr, MAX_IPADR_LEN)) { - us_port = ntohs(si6->sin6_port); - *port = us_port; - return TRUE; - } - break; -#endif -#if defined(HAVE_SYS_UN_H) && defined(AF_UNIX) - case AF_UNIX: - su = (struct sockaddr_un*)sa; - snprintf(addr, MAX_IPADR_LEN, "%s", su->sun_path); - *port = 0; - return TRUE; -#endif - default: - break; - } - - addr[0] = '\0'; - *port = 0; - - return FALSE; -} - -/* retrieves the start/end point information of a socket of an established - connection */ -CURL_STATIC void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd) -{ - curl_socklen_t len; - struct Curl_sockaddr_storage ssrem; - struct Curl_sockaddr_storage ssloc; - struct SessionHandle *data = conn->data; - - if(conn->socktype == SOCK_DGRAM) - /* there's no connection! */ - return; - - if(!conn->bits.reuse) { - int error; - - len = sizeof(struct Curl_sockaddr_storage); - if(getpeername(sockfd, (struct sockaddr*) &ssrem, &len)) { - error = SOCKERRNO; - failf(data, "getpeername() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - return; - } - - len = sizeof(struct Curl_sockaddr_storage); - memset(&ssloc, 0, sizeof(ssloc)); - if(getsockname(sockfd, (struct sockaddr*) &ssloc, &len)) { - error = SOCKERRNO; - failf(data, "getsockname() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - return; - } - - if(!getaddressinfo((struct sockaddr*)&ssrem, - conn->primary_ip, &conn->primary_port)) { - error = ERRNO; - failf(data, "ssrem inet_ntop() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - return; - } - memcpy(conn->ip_addr_str, conn->primary_ip, MAX_IPADR_LEN); - - if(!getaddressinfo((struct sockaddr*)&ssloc, - conn->local_ip, &conn->local_port)) { - error = ERRNO; - failf(data, "ssloc inet_ntop() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - return; - } - - } - - /* persist connection info in session handle */ - Curl_persistconninfo(conn); -} - -/* - * Curl_is_connected() checks if the socket has connected. - */ - -CURL_STATIC CURLcode Curl_is_connected(struct connectdata *conn, - int sockindex, - bool *connected) -{ - struct SessionHandle *data = conn->data; - CURLcode result = CURLE_OK; - long allow; - int error = 0; - struct timeval now; - int rc; - int i; - - DEBUGASSERT(sockindex >= FIRSTSOCKET && sockindex <= SECONDARYSOCKET); - - *connected = FALSE; /* a very negative world view is best */ - - if(conn->bits.tcpconnect[sockindex]) { - /* we are connected already! */ - *connected = TRUE; - return CURLE_OK; - } - - now = Curl_tvnow(); - - /* figure out how long time we have left to connect */ - allow = Curl_timeleft(data, &now, TRUE); - - if(allow < 0) { - /* time-out, bail out, go home */ - failf(data, "Connection time-out"); - return CURLE_OPERATION_TIMEDOUT; - } - - for(i=0; i<2; i++) { - const int other = i ^ 1; - if(conn->tempsock[i] == CURL_SOCKET_BAD) - continue; - -#ifdef mpeix - /* Call this function once now, and ignore the results. We do this to - "clear" the error state on the socket so that we can later read it - reliably. This is reported necessary on the MPE/iX operating system. */ - (void)verifyconnect(conn->tempsock[i], NULL); -#endif - - /* check socket for connect */ - rc = Curl_socket_ready(CURL_SOCKET_BAD, conn->tempsock[i], 0); - - if(rc == 0) { /* no connection yet */ - if(curlx_tvdiff(now, conn->connecttime) >= conn->timeoutms_per_addr) { - infof(data, "After %ldms connect time, move on!\n", - conn->timeoutms_per_addr); - error = ETIMEDOUT; - } - - /* should we try another protocol family? */ - if(i == 0 && conn->tempaddr[1] == NULL && - curlx_tvdiff(now, conn->connecttime) >= HAPPY_EYEBALLS_TIMEOUT) { - trynextip(conn, sockindex, 1); - } - } - else if(rc == CURL_CSELECT_OUT) { - if(verifyconnect(conn->tempsock[i], &error)) { - /* we are connected with TCP, awesome! */ - - /* use this socket from now on */ - conn->sock[sockindex] = conn->tempsock[i]; - conn->ip_addr = conn->tempaddr[i]; - conn->tempsock[i] = CURL_SOCKET_BAD; - - /* close the other socket, if open */ - if(conn->tempsock[other] != CURL_SOCKET_BAD) { - Curl_closesocket(conn, conn->tempsock[other]); - conn->tempsock[other] = CURL_SOCKET_BAD; - } - - /* see if we need to do any proxy magic first once we connected */ - result = Curl_connected_proxy(conn, sockindex); - if(result) - return result; - - conn->bits.tcpconnect[sockindex] = TRUE; - - *connected = TRUE; - if(sockindex == FIRSTSOCKET) - Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */ - Curl_updateconninfo(conn, conn->sock[sockindex]); - Curl_verboseconnect(conn); - - return CURLE_OK; - } - else - infof(data, "Connection failed\n"); - } - else if(rc & CURL_CSELECT_ERR) - (void)verifyconnect(conn->tempsock[i], &error); - - /* - * The connection failed here, we should attempt to connect to the "next - * address" for the given host. But first remember the latest error. - */ - if(error) { - data->state.os_errno = error; - SET_SOCKERRNO(error); - if(conn->tempaddr[i]) { - CURLcode status; - char ipaddress[MAX_IPADR_LEN]; - Curl_printable_address(conn->tempaddr[i], ipaddress, MAX_IPADR_LEN); - infof(data, "connect to %s port %ld failed: %s\n", - ipaddress, conn->port, Curl_strerror(conn, error)); - - conn->timeoutms_per_addr = conn->tempaddr[i]->ai_next == NULL ? - allow : allow / 2; - - status = trynextip(conn, sockindex, i); - if(status != CURLE_COULDNT_CONNECT - || conn->tempsock[other] == CURL_SOCKET_BAD) - /* the last attempt failed and no other sockets remain open */ - result = status; - } - } - } - - if(result) { - /* no more addresses to try */ - - /* if the first address family runs out of addresses to try before - the happy eyeball timeout, go ahead and try the next family now */ - if(conn->tempaddr[1] == NULL) { - result = trynextip(conn, sockindex, 1); - if(!result) - return result; - } - - failf(data, "Failed to connect to %s port %ld: %s", - conn->bits.proxy?conn->proxy.name:conn->host.name, - conn->port, Curl_strerror(conn, error)); - } - - return result; -} - -static void tcpnodelay(struct connectdata *conn, - curl_socket_t sockfd) -{ -#ifdef TCP_NODELAY - struct SessionHandle *data= conn->data; - curl_socklen_t onoff = (curl_socklen_t) data->set.tcp_nodelay; - int level = IPPROTO_TCP; - -#if 0 - /* The use of getprotobyname() is disabled since it isn't thread-safe on - numerous systems. On these getprotobyname_r() should be used instead, but - that exists in at least one 4 arg version and one 5 arg version, and - since the proto number rarely changes anyway we now just use the hard - coded number. The "proper" fix would need a configure check for the - correct function much in the same style the gethostbyname_r versions are - detected. */ - struct protoent *pe = getprotobyname("tcp"); - if(pe) - level = pe->p_proto; -#endif - - if(setsockopt(sockfd, level, TCP_NODELAY, (void *)&onoff, - sizeof(onoff)) < 0) - infof(data, "Could not set TCP_NODELAY: %s\n", - Curl_strerror(conn, SOCKERRNO)); - else - infof(data, "TCP_NODELAY set\n"); -#else - (void)conn; - (void)sockfd; -#endif -} - -#ifdef SO_NOSIGPIPE -/* The preferred method on Mac OS X (10.2 and later) to prevent SIGPIPEs when - sending data to a dead peer (instead of relying on the 4th argument to send - being MSG_NOSIGNAL). Possibly also existing and in use on other BSD - systems? */ -static void nosigpipe(struct connectdata *conn, - curl_socket_t sockfd) -{ - struct SessionHandle *data= conn->data; - int onoff = 1; - if(setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&onoff, - sizeof(onoff)) < 0) - infof(data, "Could not set SO_NOSIGPIPE: %s\n", - Curl_strerror(conn, SOCKERRNO)); -} -#else -#define nosigpipe(x,y) Curl_nop_stmt -#endif - -#ifdef USE_WINSOCK -/* When you run a program that uses the Windows Sockets API, you may - experience slow performance when you copy data to a TCP server. - - http://support.microsoft.com/kb/823764 - - Work-around: Make the Socket Send Buffer Size Larger Than the Program Send - Buffer Size - - The problem described in this knowledge-base is applied only to pre-Vista - Windows. Following function trying to detect OS version and skips - SO_SNDBUF adjustment for Windows Vista and above. -*/ -#define DETECT_OS_NONE 0 -#define DETECT_OS_PREVISTA 1 -#define DETECT_OS_VISTA_OR_LATER 2 - -CURL_STATIC void Curl_sndbufset(curl_socket_t sockfd) -{ - int val = CURL_MAX_WRITE_SIZE + 32; - int curval = 0; - int curlen = sizeof(curval); - DWORD majorVersion = 6; - - static int detectOsState = DETECT_OS_NONE; - - if(detectOsState == DETECT_OS_NONE) { -#if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \ - (_WIN32_WINNT < _WIN32_WINNT_WIN2K) - OSVERSIONINFO osver; - - memset(&osver, 0, sizeof(osver)); - osver.dwOSVersionInfoSize = sizeof(osver); - - detectOsState = DETECT_OS_PREVISTA; - if(GetVersionEx(&osver)) { - if(osver.dwMajorVersion >= majorVersion) - detectOsState = DETECT_OS_VISTA_OR_LATER; - } -#elif defined(CURL_WINRT) - detectOsState = DETECT_OS_VISTA_OR_LATER; -#else - ULONGLONG majorVersionMask; - OSVERSIONINFOEX osver; - - memset(&osver, 0, sizeof(osver)); - osver.dwOSVersionInfoSize = sizeof(osver); - osver.dwMajorVersion = majorVersion; - majorVersionMask = VerSetConditionMask(0, VER_MAJORVERSION, - VER_GREATER_EQUAL); - - if(VerifyVersionInfo(&osver, VER_MAJORVERSION, majorVersionMask)) - detectOsState = DETECT_OS_VISTA_OR_LATER; - else - detectOsState = DETECT_OS_PREVISTA; -#endif - } - - if(detectOsState == DETECT_OS_VISTA_OR_LATER) - return; - - if(getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (char *)&curval, &curlen) == 0) - if(curval > val) - return; - - setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (const char *)&val, sizeof(val)); -} -#endif - -/* - * singleipconnect() - * - * Note that even on connect fail it returns CURLE_OK, but with 'sock' set to - * CURL_SOCKET_BAD. Other errors will however return proper errors. - * - * singleipconnect() connects to the given IP only, and it may return without - * having connected. - */ -static CURLcode singleipconnect(struct connectdata *conn, - const Curl_addrinfo *ai, - curl_socket_t *sockp) -{ - struct Curl_sockaddr_ex addr; - int rc; - int error = 0; - bool isconnected = FALSE; - struct SessionHandle *data = conn->data; - curl_socket_t sockfd; - CURLcode result; - char ipaddress[MAX_IPADR_LEN]; - long port; - bool is_tcp; - - *sockp = CURL_SOCKET_BAD; - - result = Curl_socket(conn, ai, &addr, &sockfd); - if(result) - /* Failed to create the socket, but still return OK since we signal the - lack of socket as well. This allows the parent function to keep looping - over alternative addresses/socket families etc. */ - return CURLE_OK; - - /* store remote address and port used in this connection attempt */ - if(!getaddressinfo((struct sockaddr*)&addr.sa_addr, - ipaddress, &port)) { - /* malformed address or bug in inet_ntop, try next address */ - error = ERRNO; - failf(data, "sa_addr inet_ntop() failed with errno %d: %s", - error, Curl_strerror(conn, error)); - Curl_closesocket(conn, sockfd); - return CURLE_OK; - } - infof(data, " Trying %s...\n", ipaddress); - -#ifdef ENABLE_IPV6 - is_tcp = (addr.family == AF_INET || addr.family == AF_INET6) && - addr.socktype == SOCK_STREAM; -#else - is_tcp = (addr.family == AF_INET) && addr.socktype == SOCK_STREAM; -#endif - if(is_tcp && data->set.tcp_nodelay) - tcpnodelay(conn, sockfd); - - nosigpipe(conn, sockfd); - - Curl_sndbufset(sockfd); - - if(is_tcp && data->set.tcp_keepalive) - tcpkeepalive(data, sockfd); - - if(data->set.fsockopt) { - /* activate callback for setting socket options */ - error = data->set.fsockopt(data->set.sockopt_client, - sockfd, - CURLSOCKTYPE_IPCXN); - - if(error == CURL_SOCKOPT_ALREADY_CONNECTED) - isconnected = TRUE; - else if(error) { - Curl_closesocket(conn, sockfd); /* close the socket and bail out */ - return CURLE_ABORTED_BY_CALLBACK; - } - } - - /* possibly bind the local end to an IP, interface or port */ - if(addr.family == AF_INET -#ifdef ENABLE_IPV6 - || addr.family == AF_INET6 -#endif - ) { - result = bindlocal(conn, sockfd, addr.family, - Curl_ipv6_scope((struct sockaddr*)&addr.sa_addr)); - if(result) { - Curl_closesocket(conn, sockfd); /* close socket and bail out */ - if(result == CURLE_UNSUPPORTED_PROTOCOL) { - /* The address family is not supported on this interface. - We can continue trying addresses */ - return CURLE_COULDNT_CONNECT; - } - return result; - } - } - - /* set socket non-blocking */ - (void)curlx_nonblock(sockfd, TRUE); - - conn->connecttime = Curl_tvnow(); - if(conn->num_addr > 1) - Curl_expire_latest(data, conn->timeoutms_per_addr); - - /* Connect TCP sockets, bind UDP */ - if(!isconnected && (conn->socktype == SOCK_STREAM)) { - rc = connect(sockfd, &addr.sa_addr, addr.addrlen); - if(-1 == rc) - error = SOCKERRNO; - } - else { - *sockp = sockfd; - return CURLE_OK; - } - -#ifdef ENABLE_IPV6 - conn->bits.ipv6 = (addr.family == AF_INET6)?TRUE:FALSE; -#endif - - if(-1 == rc) { - switch(error) { - case EINPROGRESS: - case EWOULDBLOCK: -#if defined(EAGAIN) -#if (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 -#endif - result = CURLE_OK; - break; - - default: - /* unknown error, fallthrough and try another address! */ - infof(data, "Immediate connect fail for %s: %s\n", - ipaddress, Curl_strerror(conn, error)); - data->state.os_errno = error; - - /* connect failed */ - Curl_closesocket(conn, sockfd); - result = CURLE_COULDNT_CONNECT; - } - } - - if(!result) - *sockp = sockfd; - - return result; -} - -/* - * TCP connect to the given host with timeout, proxy or remote doesn't matter. - * There might be more than one IP address to try out. Fill in the passed - * pointer with the connected socket. - */ - -CURL_STATIC CURLcode Curl_connecthost(struct connectdata *conn, /* context */ - const struct Curl_dns_entry *remotehost) -{ - struct SessionHandle *data = conn->data; - struct timeval before = Curl_tvnow(); - CURLcode result = CURLE_COULDNT_CONNECT; - - long timeout_ms = Curl_timeleft(data, &before, TRUE); - - if(timeout_ms < 0) { - /* a precaution, no need to continue if time already is up */ - failf(data, "Connection time-out"); - return CURLE_OPERATION_TIMEDOUT; - } - - conn->num_addr = Curl_num_addresses(remotehost->addr); - conn->tempaddr[0] = remotehost->addr; - conn->tempaddr[1] = NULL; - conn->tempsock[0] = CURL_SOCKET_BAD; - conn->tempsock[1] = CURL_SOCKET_BAD; - Curl_expire(conn->data, HAPPY_EYEBALLS_TIMEOUT); - - /* Max time for the next connection attempt */ - conn->timeoutms_per_addr = - conn->tempaddr[0]->ai_next == NULL ? timeout_ms : timeout_ms / 2; - - /* start connecting to first IP */ - while(conn->tempaddr[0]) { - result = singleipconnect(conn, conn->tempaddr[0], &(conn->tempsock[0])); - if(!result) - break; - conn->tempaddr[0] = conn->tempaddr[0]->ai_next; - } - - if(conn->tempsock[0] == CURL_SOCKET_BAD) - return result; - - data->info.numconnects++; /* to track the number of connections made */ - - return CURLE_OK; -} - -struct connfind { - struct connectdata *tofind; - bool found; -}; - -static int conn_is_conn(struct connectdata *conn, void *param) -{ - struct connfind *f = (struct connfind *)param; - if(conn == f->tofind) { - f->found = TRUE; - return 1; - } - return 0; -} - -/* - * Used to extract socket and connectdata struct for the most recent - * transfer on the given SessionHandle. - * - * The returned socket will be CURL_SOCKET_BAD in case of failure! - */ -CURL_STATIC curl_socket_t Curl_getconnectinfo(struct SessionHandle *data, - struct connectdata **connp) -{ - curl_socket_t sockfd; - - DEBUGASSERT(data); - - /* this works for an easy handle: - * - that has been used for curl_easy_perform() - * - that is associated with a multi handle, and whose connection - * was detached with CURLOPT_CONNECT_ONLY - */ - if(data->state.lastconnect && (data->multi_easy || data->multi)) { - struct connectdata *c = data->state.lastconnect; - struct connfind find; - find.tofind = data->state.lastconnect; - find.found = FALSE; - - Curl_conncache_foreach(data->multi_easy? - data->multi_easy->conn_cache: - data->multi->conn_cache, &find, conn_is_conn); - - if(!find.found) { - data->state.lastconnect = NULL; - return CURL_SOCKET_BAD; - } - - if(connp) - /* only store this if the caller cares for it */ - *connp = c; - sockfd = c->sock[FIRSTSOCKET]; - /* we have a socket connected, let's determine if the server shut down */ - /* determine if ssl */ - if(c->ssl[FIRSTSOCKET].use) { - /* use the SSL context */ - if(!Curl_ssl_check_cxn(c)) - return CURL_SOCKET_BAD; /* FIN received */ - } -/* Minix 3.1 doesn't support any flags on recv; just assume socket is OK */ -#ifdef MSG_PEEK - else { - /* use the socket */ - char buf; - if(recv((RECV_TYPE_ARG1)c->sock[FIRSTSOCKET], (RECV_TYPE_ARG2)&buf, - (RECV_TYPE_ARG3)1, (RECV_TYPE_ARG4)MSG_PEEK) == 0) { - return CURL_SOCKET_BAD; /* FIN received */ - } - } -#endif - } - else - return CURL_SOCKET_BAD; - - return sockfd; -} - -/* - * Close a socket. - * - * 'conn' can be NULL, beware! - */ -CURL_STATIC int Curl_closesocket(struct connectdata *conn, - curl_socket_t sock) -{ - if(conn && conn->fclosesocket) { - if((sock == conn->sock[SECONDARYSOCKET]) && - conn->sock_accepted[SECONDARYSOCKET]) - /* if this socket matches the second socket, and that was created with - accept, then we MUST NOT call the callback but clear the accepted - status */ - conn->sock_accepted[SECONDARYSOCKET] = FALSE; - else { - Curl_multi_closed(conn, sock); - return conn->fclosesocket(conn->closesocket_client, sock); - } - } - - if(conn) - /* tell the multi-socket code about this */ - Curl_multi_closed(conn, sock); - - sclose(sock); - - return 0; -} - -/* - * Create a socket based on info from 'conn' and 'ai'. - * - * 'addr' should be a pointer to the correct struct to get data back, or NULL. - * 'sockfd' must be a pointer to a socket descriptor. - * - * If the open socket callback is set, used that! - * - */ -CURL_STATIC CURLcode Curl_socket(struct connectdata *conn, - const Curl_addrinfo *ai, - struct Curl_sockaddr_ex *addr, - curl_socket_t *sockfd) -{ - struct SessionHandle *data = conn->data; - struct Curl_sockaddr_ex dummy; - - if(!addr) - /* if the caller doesn't want info back, use a local temp copy */ - addr = &dummy; - - /* - * The Curl_sockaddr_ex structure is basically libcurl's external API - * curl_sockaddr structure with enough space available to directly hold - * any protocol-specific address structures. The variable declared here - * will be used to pass / receive data to/from the fopensocket callback - * if this has been set, before that, it is initialized from parameters. - */ - - addr->family = ai->ai_family; - addr->socktype = conn->socktype; - addr->protocol = conn->socktype==SOCK_DGRAM?IPPROTO_UDP:ai->ai_protocol; - addr->addrlen = ai->ai_addrlen; - - if(addr->addrlen > sizeof(struct Curl_sockaddr_storage)) - addr->addrlen = sizeof(struct Curl_sockaddr_storage); - memcpy(&addr->sa_addr, ai->ai_addr, addr->addrlen); - - if(data->set.fopensocket) - /* - * If the opensocket callback is set, all the destination address - * information is passed to the callback. Depending on this information the - * callback may opt to abort the connection, this is indicated returning - * CURL_SOCKET_BAD; otherwise it will return a not-connected socket. When - * the callback returns a valid socket the destination address information - * might have been changed and this 'new' address will actually be used - * here to connect. - */ - *sockfd = data->set.fopensocket(data->set.opensocket_client, - CURLSOCKTYPE_IPCXN, - (struct curl_sockaddr *)addr); - else - /* opensocket callback not set, so simply create the socket now */ - *sockfd = socket(addr->family, addr->socktype, addr->protocol); - - if(*sockfd == CURL_SOCKET_BAD) - /* no socket, no connection */ - return CURLE_COULDNT_CONNECT; - -#if defined(ENABLE_IPV6) && defined(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID) - if(conn->scope_id && (addr->family == AF_INET6)) { - struct sockaddr_in6 * const sa6 = (void *)&addr->sa_addr; - sa6->sin6_scope_id = conn->scope_id; - } -#endif - - return CURLE_OK; - -} - -#ifdef CURLDEBUG -/* - * Curl_conncontrol() is used to set the conn->bits.close bit on or off. It - * MUST be called with the connclose() or connkeep() macros with a stated - * reason. The reason is only shown in debug builds but helps to figure out - * decision paths when connections are or aren't re-used as expected. - */ -CURL_STATIC void Curl_conncontrol(struct connectdata *conn, bool closeit, - const char *reason) -{ -#if defined(CURL_DISABLE_VERBOSE_STRINGS) - (void) reason; -#endif - if(closeit != conn->bits.close) { - infof(conn->data, "Marked for [%s]: %s\n", closeit?"closure":"keep alive", - reason); - - conn->bits.close = closeit; /* the only place in the source code that - should assign this bit */ - } -} -#endif -- cgit v1.2.3