/* +----------------------------------------------------------------------+ | PHP Version 4 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2003 The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 2.02 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available at through the world-wide-web at | | http://www.php.net/license/2_02.txt. | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Author: Stig Venaas | | Streams work by Wez Furlong | +----------------------------------------------------------------------+ */ /* $Id$ */ /*#define DEBUG_MAIN_NETWORK 1*/ #include "php.h" #include #ifdef PHP_WIN32 #define O_RDONLY _O_RDONLY #include "win32/param.h" #elif defined(NETWARE) #ifdef NEW_LIBC #include #include #else #include "netware/time_nw.h" #endif #else #include #endif #include #if HAVE_SYS_SOCKET_H #include #endif #ifndef _FCNTL_H #include #endif #ifdef HAVE_SYS_SELECT_H #include #endif #if HAVE_SYS_POLL_H #include #endif #if defined(NETWARE) #ifdef USE_WINSOCK /*#include */ #include #else /* New headers for socket stuff */ #ifdef NEW_LIBC #include #include #include #endif #include #endif #elif !defined(PHP_WIN32) #include #include #if HAVE_ARPA_INET_H #include #endif #endif #ifndef HAVE_INET_ATON int inet_aton(const char *, struct in_addr *); #endif #include "php_network.h" #if defined(PHP_WIN32) || defined(__riscos__) || defined(NETWARE) #undef AF_UNIX #endif #if defined(AF_UNIX) #include #endif #include "ext/standard/file.h" #ifdef PHP_WIN32 # include "win32/time.h" # define SOCK_ERR INVALID_SOCKET # define SOCK_CONN_ERR SOCKET_ERROR # define PHP_TIMEOUT_ERROR_VALUE WSAETIMEDOUT #else # define SOCK_ERR -1 # define SOCK_CONN_ERR -1 # define PHP_TIMEOUT_ERROR_VALUE ETIMEDOUT #endif #ifdef HAVE_GETADDRINFO #ifdef HAVE_GAI_STRERROR # define PHP_GAI_STRERROR(x) (gai_strerror(x)) #else # define PHP_GAI_STRERROR(x) (php_gai_strerror(x)) /* {{{ php_gai_strerror */ static char *php_gai_strerror(int code) { static struct { int code; const char *msg; } values[] = { # ifdef EAI_ADDRFAMILY {EAI_ADDRFAMILY, "Address family for hostname not supported"}, # endif {EAI_AGAIN, "Temporary failure in name resolution"}, {EAI_BADFLAGS, "Bad value for ai_flags"}, {EAI_FAIL, "Non-recoverable failure in name resolution"}, {EAI_FAMILY, "ai_family not supported"}, {EAI_MEMORY, "Memory allocation failure"}, # ifdef EAI_NODATA {EAI_NODATA, "No address associated with hostname"}, # endif {EAI_NONAME, "Name or service not known"}, {EAI_SERVICE, "Servname not supported for ai_socktype"}, {EAI_SOCKTYPE, "ai_socktype not supported"}, {EAI_SYSTEM, "System error"}, {0, NULL} }; int i; for (i = 0; values[i].msg != NULL; i++) { if (values[i].code == code) { return (char *)values[i].msg; } } return "Unknown error"; } /* }}} */ #endif #endif /* {{{ php_network_freeaddresses */ static void php_network_freeaddresses(struct sockaddr **sal) { struct sockaddr **sap; if (sal == NULL) return; for (sap = sal; *sap != NULL; sap++) efree(*sap); efree(sal); } /* }}} */ /* {{{ php_network_getaddresses * Returns number of addresses, 0 for none/error */ static int php_network_getaddresses(const char *host, struct sockaddr ***sal, char **error_string TSRMLS_DC) { struct sockaddr **sap; int n; #ifdef HAVE_GETADDRINFO struct addrinfo hints, *res, *sai; #else struct hostent *host_info; struct in_addr in; #endif if (host == NULL) { return 0; } #ifdef HAVE_GETADDRINFO memset(&hints, '\0', sizeof(hints)); # ifdef HAVE_IPV6 hints.ai_family = AF_UNSPEC; # else hints.ai_family = AF_INET; # endif if ((n = getaddrinfo(host, NULL, &hints, &res)) || res == NULL) { if (error_string) { spprintf(error_string, 0, "getaddrinfo: %s", (res == NULL ? "null result pointer" : PHP_GAI_STRERROR(n))); } else { php_error_docref(NULL TSRMLS_CC, E_WARNING, "php_network_getaddresses: getaddrinfo failed: %s", (res == NULL ? "null result pointer" : PHP_GAI_STRERROR(n))); } return 0; } sai = res; for (n = 1; (sai = sai->ai_next) != NULL; n++) { ; } *sal = emalloc((n + 1) * sizeof(*sal)); sai = res; sap = *sal; do { switch (sai->ai_family) { # if HAVE_IPV6 case AF_INET6: *sap = emalloc(sizeof(struct sockaddr_in6)); *(struct sockaddr_in6 *)*sap = *((struct sockaddr_in6 *)sai->ai_addr); sap++; break; # endif case AF_INET: *sap = emalloc(sizeof(struct sockaddr_in)); *(struct sockaddr_in *)*sap = *((struct sockaddr_in *)sai->ai_addr); sap++; break; } } while ((sai = sai->ai_next) != NULL); freeaddrinfo(res); #else if (!inet_aton(host, &in)) { /* XXX NOT THREAD SAFE * (but it *is* thread safe under win32) */ host_info = gethostbyname(host); if (host_info == NULL) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "php_network_getaddresses: gethostbyname failed"); return 0; } in = *((struct in_addr *) host_info->h_addr); } *sal = emalloc(2 * sizeof(*sal)); sap = *sal; *sap = emalloc(sizeof(struct sockaddr_in)); (*sap)->sa_family = AF_INET; ((struct sockaddr_in *)*sap)->sin_addr = in; sap++; n = 1; #endif *sap = NULL; return n; } /* }}} */ #ifndef O_NONBLOCK #define O_NONBLOCK O_NDELAY #endif #if !defined(__BEOS__) # define HAVE_NON_BLOCKING_CONNECT 1 # ifdef PHP_WIN32 typedef u_long php_non_blocking_flags_t; # define SET_SOCKET_BLOCKING_MODE(sock, save) \ save = TRUE; ioctlsocket(sock, FIONBIO, &save) # define RESTORE_SOCKET_BLOCKING_MODE(sock, save) \ ioctlsocket(sock, FIONBIO, &save) # else typedef int php_non_blocking_flags_t; # define SET_SOCKET_BLOCKING_MODE(sock, save) \ save = fcntl(sock, F_GETFL, 0); \ fcntl(sock, F_SETFL, save | O_NONBLOCK) # define RESTORE_SOCKET_BLOCKING_MODE(sock, save) \ fcntl(sock, F_SETFL, save) # endif #endif /* Connect to a socket using an interruptible connect with optional timeout. * Optionally, the connect can be made asynchronously, which will implicitly * enable non-blocking mode on the socket. * */ /* {{{ php_network_connect_socket */ PHPAPI int php_network_connect_socket(int sockfd, const struct sockaddr *addr, socklen_t addrlen, int asynchronous, struct timeval *timeout, char **error_string, int *error_code) { #if HAVE_NON_BLOCKING_CONNECT php_non_blocking_flags_t orig_flags; int n; int error = 0; socklen_t len; int ret = 0; fd_set rset; fd_set wset; fd_set eset; SET_SOCKET_BLOCKING_MODE(sockfd, orig_flags); if ((n = connect(sockfd, addr, addrlen)) < 0) { error = php_socket_errno(); if (error_code) { *error_code = error; } if (error != EINPROGRESS) { if (error_string) { *error_string = php_socket_strerror(error, NULL, 0); } return -1; } if (asynchronous && error == EINPROGRESS) { /* this is fine by us */ return 0; } } if (n == 0) { goto ok; } FD_ZERO(&rset); FD_ZERO(&eset); FD_SET(sockfd, &rset); FD_SET(sockfd, &eset); wset = rset; if ((n = select(sockfd + 1, &rset, &wset, &eset, timeout)) == 0) { error = PHP_TIMEOUT_ERROR_VALUE; } if(FD_ISSET(sockfd, &rset) || FD_ISSET(sockfd, &wset)) { len = sizeof(error); /* BSD-derived systems set errno correctly Solaris returns -1 from getsockopt in case of error */ if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) { ret = -1; } } else { /* whoops: sockfd has disappeared */ ret = -1; } ok: if (!asynchronous) { /* back to blocking mode */ RESTORE_SOCKET_BLOCKING_MODE(sockfd, orig_flags); } if (error_code) { *error_code = error; } if (error && error_string) { *error_string = php_socket_strerror(error, NULL, 0); ret = -1; } return ret; #else if (asynchronous) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Asynchronous connect() not supported on this platform"); } return connect(sockfd, addr, addrlen); #endif } /* }}} */ /* {{{ php_connect_nonb */ PHPAPI int php_connect_nonb(int sockfd, const struct sockaddr *addr, socklen_t addrlen, struct timeval *timeout) { #if (!defined(__BEOS__) && !defined(PHP_WIN32)) && (defined(O_NONBLOCK) || defined(O_NDELAY)) int flags; int n; int error = 0; socklen_t len; int ret = 0; fd_set rset; fd_set wset; fd_set eset; if (timeout == NULL) { /* blocking mode */ return connect(sockfd, addr, addrlen); } flags = fcntl(sockfd, F_GETFL, 0); fcntl(sockfd, F_SETFL, flags | O_NONBLOCK); if ((n = connect(sockfd, addr, addrlen)) < 0) { if (errno != EINPROGRESS) { return -1; } } if (n == 0) { goto ok; } FD_ZERO(&rset); FD_ZERO(&eset); FD_SET(sockfd, &rset); FD_SET(sockfd, &eset); wset = rset; if ((n = select(sockfd + 1, &rset, &wset, &eset, timeout)) == 0) { error = ETIMEDOUT; } if(FD_ISSET(sockfd, &rset) || FD_ISSET(sockfd, &wset)) { len = sizeof(error); /* BSD-derived systems set errno correctly Solaris returns -1 from getsockopt in case of error */ if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) { ret = -1; } } else { /* whoops: sockfd has disappeared */ ret = -1; } ok: fcntl(sockfd, F_SETFL, flags); if(error) { errno = error; ret = -1; } return ret; #else /* !defined(PHP_WIN32) && ... */ #ifdef PHP_WIN32 return php_connect_nonb_win32((SOCKET) sockfd, addr, addrlen, timeout); #endif return connect(sockfd, addr, addrlen); #endif } /* }}} */ #ifdef PHP_WIN32 /* {{{ php_connect_nonb_win32 */ PHPAPI int php_connect_nonb_win32(SOCKET sockfd, const struct sockaddr *addr, socklen_t addrlen, struct timeval *timeout) { int error = 0, error_len, ret; u_long non_block = TRUE, block = FALSE; fd_set rset, wset; if (timeout == NULL) { /* blocking mode */ return connect(sockfd, addr, addrlen); } /* Set the socket to be non-blocking */ ioctlsocket(sockfd, FIONBIO, &non_block); if (connect(sockfd, addr, addrlen) == SOCKET_ERROR) { if (WSAGetLastError() != WSAEWOULDBLOCK) { return SOCKET_ERROR; } } FD_ZERO(&rset); FD_SET(sockfd, &rset); FD_ZERO(&wset); FD_SET(sockfd, &wset); if ((ret = select(sockfd + 1, &rset, &wset, NULL, timeout)) == 0) { WSASetLastError(WSAETIMEDOUT); return SOCKET_ERROR; } if (ret == SOCKET_ERROR) { return SOCKET_ERROR; } if(FD_ISSET(sockfd, &rset) || FD_ISSET(sockfd, &wset)) { error_len = sizeof(error); if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, (char *) &error, &error_len) == SOCKET_ERROR) { return SOCKET_ERROR; } } else { /* whoops: sockfd has disappeared */ return SOCKET_ERROR; } /* Set the socket back to blocking */ ioctlsocket(sockfd, FIONBIO, &block); if (error) { WSASetLastError(error); return SOCKET_ERROR; } return 0; } /* }}} */ #endif /* {{{ sub_times */ static inline void sub_times(struct timeval a, struct timeval b, struct timeval *result) { result->tv_usec = a.tv_usec - b.tv_usec; if (result->tv_usec < 0L) { a.tv_sec--; result->tv_usec += 1000000L; } result->tv_sec = a.tv_sec - b.tv_sec; if (result->tv_sec < 0L) { result->tv_sec++; result->tv_usec -= 1000000L; } } /* }}} */ /* Connect to a remote host using an interruptible connect with optional timeout. * Optionally, the connect can be made asynchronously, which will implicitly * enable non-blocking mode on the socket. * Returns the connected (or connecting) socket, or -1 on failure. * */ /* {{{ php_network_connect_socket_to_host */ int php_network_connect_socket_to_host(const char *host, unsigned short port, int socktype, int asynchronous, struct timeval *timeout, char **error_string, int *error_code TSRMLS_DC) { int num_addrs, sock, n, fatal = 0; struct sockaddr **sal, **psal, *sa; struct timeval working_timeout; socklen_t socklen; #if HAVE_GETTIMEOFDAY struct timeval limit_time, time_now; #endif num_addrs = php_network_getaddresses(host, &psal, error_string TSRMLS_CC); if (num_addrs == 0) { /* could not resolve address(es) */ return -1; } if (timeout) { memcpy(&working_timeout, timeout, sizeof(working_timeout)); #if HAVE_GETTIMEOFDAY gettimeofday(&limit_time, NULL); limit_time.tv_sec += working_timeout.tv_sec; limit_time.tv_usec += working_timeout.tv_usec; if (limit_time.tv_usec >= 1000000) { limit_time.tv_usec -= 1000000; limit_time.tv_sec++; } #endif } for (sal = psal; !fatal && *sal != NULL; sal++) { sa = *sal; /* create a socket for this address */ sock = socket(sa->sa_family, socktype, 0); if (sock == SOCK_ERR) { continue; } switch (sa->sa_family) { #if HAVE_GETADDRINFO && HAVE_IPV6 case AF_INET6: ((struct sockaddr_in6 *)sa)->sin6_family = sa->sa_family; ((struct sockaddr_in6 *)sa)->sin6_port = htons(port); socklen = sizeof(struct sockaddr_in6); break; #endif case AF_INET: ((struct sockaddr_in *)sa)->sin_family = sa->sa_family; ((struct sockaddr_in *)sa)->sin_port = htons(port); socklen = sizeof(struct sockaddr_in); break; default: /* Unknown family */ sa = NULL; } if (sa) { /* make a connection attempt */ n = php_network_connect_socket(sock, sa, socklen, asynchronous, timeout ? &working_timeout : NULL, error_string, error_code); if (n != SOCK_CONN_ERR) { goto connected; } /* adjust timeout for next attempt */ #if HAVE_GETTIMEOFDAY if (timeout) { gettimeofday(&time_now, NULL); if (timercmp(&time_now, &limit_time, >=)) { /* time limit expired; don't attempt any further connections */ fatal = 1; } else { /* work out remaining time */ sub_times(limit_time, time_now, &working_timeout); } } #else if (err == PHP_TIMEOUT_ERROR_VALUE) { /* Don't even bother trying to connect to the next alternative; * we have no way to determine how long we have already taken * and it is quite likely that the next attempt will fail too. */ fatal = 1; } else { /* re-use the same initial timeout. * Not the best thing, but in practice it should be good-enough */ if (timeout) { memcpy(&working_timeout, timeout, sizeof(working_timeout)); } } #endif } close(sock); } sock = -1; connected: php_network_freeaddresses(psal); return sock; } /* }}} */ /* {{{ php_hostconnect * Creates a socket of type socktype and connects to the given host and * port, returns the created socket on success, else returns -1. * timeout gives timeout in seconds, 0 means blocking mode. */ int php_hostconnect(const char *host, unsigned short port, int socktype, struct timeval *timeout TSRMLS_DC) { int n, repeatto, s; struct sockaddr **sal, **psal; struct timeval individual_timeout; int set_timeout = 0; int err; n = php_network_getaddresses(host, &sal, NULL TSRMLS_CC); if (n == 0) return -1; if (timeout != NULL) { /* is this a good idea? 5s? */ repeatto = timeout->tv_sec / n > 5; if (repeatto) { individual_timeout.tv_sec = timeout->tv_sec / n; } else { individual_timeout.tv_sec = timeout->tv_sec; } individual_timeout.tv_usec = timeout->tv_usec; } else { individual_timeout.tv_sec = 0; individual_timeout.tv_usec = 0; } /* Boolean indicating whether to pass a timeout */ set_timeout = individual_timeout.tv_sec + individual_timeout.tv_usec; psal = sal; while (*sal != NULL) { s = socket((*sal)->sa_family, socktype, 0); if (s != SOCK_ERR) { switch ((*sal)->sa_family) { #if defined( HAVE_GETADDRINFO ) && defined( HAVE_IPV6 ) case AF_INET6: { struct sockaddr_in6 *sa = (struct sockaddr_in6 *)*sal; sa->sin6_family = (*sal)->sa_family; sa->sin6_port = htons(port); if (php_connect_nonb(s, (struct sockaddr *) sa, sizeof(*sa), (set_timeout) ? &individual_timeout : NULL) != SOCK_CONN_ERR) goto ok; } break; #endif case AF_INET: { struct sockaddr_in *sa = (struct sockaddr_in *)*sal; sa->sin_family = (*sal)->sa_family; sa->sin_port = htons(port); if (php_connect_nonb(s, (struct sockaddr *) sa, sizeof(*sa), (set_timeout) ? &individual_timeout : NULL) != SOCK_CONN_ERR) goto ok; } break; } #ifdef PHP_WIN32 /* Preserve the last error */ err = WSAGetLastError(); #else err = errno; #endif close (s); } sal++; if (err == PHP_TIMEOUT_ERROR_VALUE) { /* if the first attempt timed out, it's highly likely * that any subsequent attempts will do so also */ break; } } php_network_freeaddresses(psal); php_error_docref(NULL TSRMLS_CC, E_WARNING, "php_hostconnect: connect failed"); #ifdef PHP_WIN32 /* Restore the last error */ WSASetLastError(err); #endif return -1; ok: php_network_freeaddresses(psal); return s; } /* }}} */ /* {{{ php_any_addr * Fills the any (wildcard) address into php_sockaddr_storage */ void php_any_addr(int family, php_sockaddr_storage *addr, unsigned short port) { memset(addr, 0, sizeof(php_sockaddr_storage)); switch (family) { #ifdef HAVE_IPV6 case AF_INET6: { struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(port); sin6->sin6_addr = in6addr_any; break; } #endif case AF_INET: { struct sockaddr_in *sin = (struct sockaddr_in *) addr; sin->sin_family = AF_INET; sin->sin_port = htons(port); sin->sin_addr.s_addr = htonl(INADDR_ANY); break; } } } /* }}} */ /* {{{ php_sockaddr_size * Returns the size of struct sockaddr_xx for the family */ int php_sockaddr_size(php_sockaddr_storage *addr) { switch (((struct sockaddr *)addr)->sa_family) { case AF_INET: return sizeof(struct sockaddr_in); #ifdef HAVE_IPV6 case AF_INET6: return sizeof(struct sockaddr_in6); #endif #ifdef AF_UNIX case AF_UNIX: return sizeof(struct sockaddr_un); #endif default: return 0; } } /* }}} */ /* Given a socket error code, if buf == NULL: * emallocs storage for the error message and returns * else * sprintf message into provided buffer and returns buf */ /* {{{ php_socket_strerror */ PHPAPI char *php_socket_strerror(long err, char *buf, size_t bufsize) { #ifndef PHP_WIN32 char *errstr; errstr = strerror(err); if (buf == NULL) { buf = estrdup(errstr); } else { strncpy(buf, errstr, bufsize); } return buf; #else char *sysbuf; int free_it = 1; if (!FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&sysbuf, 0, NULL)) { free_it = 0; sysbuf = "Unknown Error"; } if (buf == NULL) { buf = estrdup(sysbuf); } else { strncpy(buf, sysbuf, bufsize); } if (free_it) { LocalFree(sysbuf); } return buf; #endif } /* }}} */ /* deprecated */ PHPAPI php_stream *_php_stream_sock_open_from_socket(int socket, const char *persistent_id STREAMS_DC TSRMLS_DC) { php_stream *stream; php_netstream_data_t *sock; sock = pemalloc(sizeof(php_netstream_data_t), persistent_id ? 1 : 0); memset(sock, 0, sizeof(php_netstream_data_t)); sock->is_blocked = 1; sock->timeout.tv_sec = FG(default_socket_timeout); sock->timeout.tv_usec = 0; sock->socket = socket; stream = php_stream_alloc_rel(&php_stream_generic_socket_ops, sock, persistent_id, "r+"); stream->flags |= PHP_STREAM_FLAG_AVOID_BLOCKING; if (stream == NULL) pefree(sock, persistent_id ? 1 : 0); return stream; } PHPAPI php_stream *_php_stream_sock_open_host(const char *host, unsigned short port, int socktype, struct timeval *timeout, const char *persistent_id STREAMS_DC TSRMLS_DC) { char *res; long reslen; php_stream *stream; reslen = spprintf(&res, 0, "tcp://%s:%d", host, port); stream = php_stream_xport_create(res, reslen, ENFORCE_SAFE_MODE | REPORT_ERRORS, STREAM_XPORT_CLIENT | STREAM_XPORT_CONNECT, persistent_id, timeout, NULL, NULL, NULL); efree(res); return stream; } PHPAPI int php_set_sock_blocking(int socketd, int block TSRMLS_DC) { int ret = SUCCESS; int flags; int myflag = 0; #ifdef PHP_WIN32 /* with ioctlsocket, a non-zero sets nonblocking, a zero sets blocking */ flags = !block; if (ioctlsocket(socketd, FIONBIO, &flags)==SOCKET_ERROR){ php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", WSAGetLastError()); ret = FALSE; } #else flags = fcntl(socketd, F_GETFL); #ifdef O_NONBLOCK myflag = O_NONBLOCK; /* POSIX version */ #elif defined(O_NDELAY) myflag = O_NDELAY; /* old non-POSIX version */ #endif if (!block) { flags |= myflag; } else { flags &= ~myflag; } fcntl(socketd, F_SETFL, flags); #endif return ret; } /* * Local variables: * tab-width: 8 * c-basic-offset: 8 * End: * vim600: sw=4 ts=4 fdm=marker * vim<600: sw=4 ts=4 */