X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/db8db70a19a52f14f284a99cafbf2f18c66372ea..eb4642a989aca1aa6c1291a73d43d1247961a234:/src/unix/gsocket.c diff --git a/src/unix/gsocket.c b/src/unix/gsocket.c index fa01cea280..2ffafc86b6 100644 --- a/src/unix/gsocket.c +++ b/src/unix/gsocket.c @@ -6,6 +6,10 @@ * ------------------------------------------------------------------------- */ +#include "wx/setup.h" + +#if wxUSE_SOCKETS + #include #include #include @@ -19,25 +23,26 @@ #include #include #include +#include #include #include #include #include +#include +#include #ifdef sun - #include +# include #endif #ifdef sgi - #include +# include #endif #include -//#include -#include -#include +#include "wx/gsocket.h" #include "gsockunx.h" #ifndef SOCKLEN_T @@ -52,10 +57,19 @@ #endif +#if !defined(__LINUX__) && !defined(__FREEBSD__) +# define CAN_USE_TIMEOUT +#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) +# if (__GLIBC__ == 2) && (__GLIBC_MINOR__ == 1) +# define CAN_USE_TIMEOUT +# endif +#endif + /* Global initialisers */ -void GSocket_Init() +bool GSocket_Init() { + return TRUE; } void GSocket_Cleanup() @@ -71,9 +85,12 @@ GSocket *GSocket_new() socket = (GSocket *)malloc(sizeof(GSocket)); + if (socket == NULL) + return NULL; + socket->m_fd = -1; for (i=0;im_fbacks[i] = NULL; + socket->m_cbacks[i] = NULL; socket->m_iocalls[i] = FALSE; } socket->m_local = NULL; @@ -82,8 +99,11 @@ GSocket *GSocket_new() socket->m_server = FALSE; socket->m_stream = TRUE; socket->m_gui_dependent = NULL; - socket->m_blocking = FALSE; + socket->m_non_blocking = FALSE; + socket->m_timeout = 10*60*1000; + /* 10 minutes * 60 sec * 1000 millisec */ + /* We initialize the GUI specific entries here */ _GSocket_GUI_Init(socket); return socket; @@ -93,17 +113,21 @@ void GSocket_destroy(GSocket *socket) { assert(socket != NULL); + /* First, we check that the socket is really shutdowned */ if (socket->m_fd != -1) GSocket_Shutdown(socket); + /* We destroy GUI specific variables */ _GSocket_GUI_Destroy(socket); + /* We destroy private addresses */ if (socket->m_local) GAddress_destroy(socket->m_local); if (socket->m_peer) GAddress_destroy(socket->m_peer); + /* We destroy socket itself */ free(socket); } @@ -113,14 +137,18 @@ void GSocket_Shutdown(GSocket *socket) assert(socket != NULL); + /* If socket has been created, we shutdown it */ if (socket->m_fd != -1) { - shutdown(socket->m_fd, 2); + /* Only oriented connection should be shutdowned */ + if (socket->m_oriented) + shutdown(socket->m_fd, 2); close(socket->m_fd); socket->m_fd = -1; } + /* We also disable GUI callbacks */ for (evt=0;evtm_fd != -1 && !socket->m_server)) + if ((socket->m_fd != -1 && !socket->m_server)) { + socket->m_error = GSOCK_INVSOCK; return GSOCK_INVSOCK; + } - if (address == NULL || address->m_family == GSOCK_NOFAMILY) + if (address == NULL || address->m_family == GSOCK_NOFAMILY) { + socket->m_error = GSOCK_INVADDR; return GSOCK_INVADDR; + } if (socket->m_local) GAddress_destroy(socket->m_local); @@ -184,7 +216,14 @@ GAddress *GSocket_GetLocal(GSocket *socket) } address = GAddress_new(); - _GAddress_translate_from(address, &addr, size); + if (address == NULL) { + socket->m_error = GSOCK_MEMERR; + return NULL; + } + if (_GAddress_translate_from(address, &addr, size) != GSOCK_NOERROR) { + GAddress_destroy(address); + return NULL; + } return address; } @@ -224,18 +263,19 @@ GSocketError GSocket_SetServer(GSocket *sck) return GSOCK_INVADDR; } - if (sck->m_stream) - type = SOCK_STREAM; - else - type = SOCK_DGRAM; + /* We always have a stream here */ + sck->m_stream = TRUE; + sck->m_server = TRUE; - sck->m_fd = socket(sck->m_local->m_realfamily, type, 0); + /* Create the socket */ + sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0); if (sck->m_fd == -1) { sck->m_error = GSOCK_IOERR; return GSOCK_IOERR; } + /* Bind the socket to the LOCAL address */ if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) < 0) { close(sck->m_fd); sck->m_fd = -1; @@ -243,6 +283,7 @@ GSocketError GSocket_SetServer(GSocket *sck) return GSOCK_IOERR; } + /* Enable listening up to 5 connections */ if (listen(sck->m_fd, 5) < 0) { close(sck->m_fd); sck->m_fd = -1; @@ -250,10 +291,10 @@ GSocketError GSocket_SetServer(GSocket *sck) return GSOCK_IOERR; } - sck->m_server = TRUE; + GSocket_SetNonBlocking(sck, sck->m_non_blocking); + GSocket_SetTimeout(sck, sck->m_timeout); return GSOCK_NOERROR; - } /* @@ -265,15 +306,19 @@ GSocket *GSocket_WaitConnection(GSocket *socket) assert(socket != NULL); + /* If the socket has already been created, we exit immediately */ if (socket->m_fd == -1 || !socket->m_server) { socket->m_error = GSOCK_INVSOCK; return NULL; } + /* Reenable GSOCK_CONNECTION event */ _GSocket_Enable(socket, GSOCK_CONNECTION); + /* Create a GSocket object for the new connection */ connection = GSocket_new(); + /* Accept the incoming connection */ connection->m_fd = accept(socket->m_fd, NULL, NULL); if (connection->m_fd == -1) { GSocket_destroy(connection); @@ -281,6 +326,7 @@ GSocket *GSocket_WaitConnection(GSocket *socket) return NULL; } + /* Initialize all fields */ connection->m_stream = TRUE; connection->m_server = FALSE; connection->m_oriented = TRUE; @@ -308,8 +354,10 @@ GSocketError GSocket_SetNonOriented(GSocket *sck) sck->m_server = FALSE; sck->m_oriented = FALSE; + /* Create the socket */ sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0); + /* Bind it to the LOCAL address */ if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) < 0) { close(sck->m_fd); sck->m_fd = -1; @@ -317,6 +365,9 @@ GSocketError GSocket_SetNonOriented(GSocket *sck) return GSOCK_IOERR; } + GSocket_SetNonBlocking(sck, sck->m_non_blocking); + GSocket_SetTimeout(sck, sck->m_timeout); + return GSOCK_NOERROR; } @@ -343,6 +394,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) return GSOCK_INVADDR; } + /* Test whether we want the socket to be a stream (e.g. TCP) */ sck->m_stream = (stream == GSOCK_STREAMED); sck->m_oriented = TRUE; @@ -351,6 +403,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) else type = SOCK_DGRAM; + /* Create the socket */ sck->m_fd = socket(sck->m_peer->m_realfamily, type, 0); if (sck->m_fd == -1) { @@ -358,6 +411,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) return GSOCK_IOERR; } + /* Connect it to the PEER address */ if (connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len) != 0) { close(sck->m_fd); @@ -366,8 +420,12 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) return GSOCK_IOERR; } + /* It is not a server */ sck->m_server = FALSE; + GSocket_SetNonBlocking(sck, sck->m_non_blocking); + GSocket_SetTimeout(sck, sck->m_timeout); + return GSOCK_NOERROR; } @@ -383,9 +441,10 @@ int GSocket_Read(GSocket *socket, char *buffer, int size) return -1; } + /* Reenable GSOCK_INPUT event */ _GSocket_Enable(socket, GSOCK_INPUT); - if (socket->m_oriented) + if (socket->m_stream) return _GSocket_Recv_Stream(socket, buffer, size); else return _GSocket_Recv_Dgram(socket, buffer, size); @@ -403,7 +462,7 @@ int GSocket_Write(GSocket *socket, const char *buffer, _GSocket_Enable(socket, GSOCK_OUTPUT); - if (socket->m_oriented) + if (socket->m_stream) return _GSocket_Send_Stream(socket, buffer, size); else return _GSocket_Send_Dgram(socket, buffer, size); @@ -435,17 +494,47 @@ bool GSocket_DataAvailable(GSocket *socket) /* Flags */ /* - GSocket_SetBlocking() puts the socket in non-blocking mode. This is useful + GSocket_SetNonBlocking() puts the socket in non-blocking mode. This is useful if we don't want to wait. */ -void GSocket_SetBlocking(GSocket *socket, bool block) +void GSocket_SetNonBlocking(GSocket *socket, bool non_block) { assert(socket != NULL); - socket->m_blocking = block; + socket->m_non_blocking = non_block; if (socket->m_fd != -1) - ioctl(socket->m_fd, FIONBIO, &block); + ioctl(socket->m_fd, FIONBIO, &non_block); +} + +/* + * GSocket_SetTimeout() + */ + +void GSocket_SetTimeout(GSocket *socket, unsigned long millisec) +{ + assert(socket != NULL); + + socket->m_timeout = millisec; + /* Neither GLIBC 2.0 nor the kernel 2.0.36 define SO_SNDTIMEO or + SO_RCVTIMEO. The man pages, that these flags should exist but + are read only. RR. */ + /* OK, restrict this to GLIBC 2.1. GL. */ + /* Anyway, they seem to pose problems: I need to know the socket level and + it varies (may be SOL_TCP, SOL_UDP, ...). I disables this and use the + other solution. GL. */ +#if 0 +#ifdef CAN_USE_TIMEOUT + if (socket->m_fd != -1) { + struct timeval tval; + + tval.tv_sec = millisec / 1000; + tval.tv_usec = (millisec % 1000) * 1000; + setsockopt(socket->m_fd, SOL_SOCKET, SO_SNDTIMEO, &tval, sizeof(tval)); + setsockopt(socket->m_fd, SOL_SOCKET, SO_RCVTIMEO, &tval, sizeof(tval)); + } +#endif +#endif } /* @@ -462,7 +551,7 @@ GSocketError GSocket_GetError(GSocket *socket) /* Callbacks */ /* - Only one fallback is possible for each event (INPUT, OUTPUT, CONNECTION) + Only one callback is possible for each event (INPUT, OUTPUT, CONNECTION) INPUT: The function is called when there is at least a byte in the input buffer OUTPUT: The function is called when the system is sure the next write call @@ -472,7 +561,7 @@ GSocketError GSocket_GetError(GSocket *socket) Server socket -> a client request a connection LOST: the connection is lost - SetFallback accepts a combination of these flags so a same callback can + SetCallback accepts a combination of these flags so a same callback can receive different events. An event is generated only once and its state is reseted when the relative @@ -480,29 +569,29 @@ GSocketError GSocket_GetError(GSocket *socket) For example: INPUT -> GSocket_Read() CONNECTION -> GSocket_Accept() */ -void GSocket_SetFallback(GSocket *socket, GSocketEventFlags event, - GSocketFallback fallback, char *cdata) +void GSocket_SetCallback(GSocket *socket, GSocketEventFlags event, + GSocketCallback callback, char *cdata) { int count; assert (socket != NULL); for (count=0;countm_fbacks[count] = fallback; + socket->m_cbacks[count] = callback; socket->m_data[count] = cdata; - - _GSocket_Install_Fallback(socket, count); _GSocket_Enable(socket, count); } } } /* - UnsetFallback will disables all fallbacks specified by "event". + UnsetCallback will disables all callbacks specified by "event". NOTE: event may be a combination of flags */ -void GSocket_UnsetFallback(GSocket *socket, GSocketEventFlags event) +void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags event) { int count = 0; @@ -511,17 +600,16 @@ void GSocket_UnsetFallback(GSocket *socket, GSocketEventFlags event) for (count=0;countm_fbacks[count] = NULL; - _GSocket_Uninstall_Fallback(socket, count); + socket->m_cbacks[count] = NULL; } } } #define CALL_FALLBACK(socket, event) \ if (socket->m_iocalls[event] && \ - socket->m_fbacks[event]) {\ + socket->m_cbacks[event]) {\ _GSocket_Disable(socket, event); \ - socket->m_fbacks[event](socket, event, \ + socket->m_cbacks[event](socket, event, \ socket->m_data[event]); \ } @@ -535,18 +623,37 @@ if (socket->m_iocalls[event] && \ signal(SIGPIPE, old_handler); \ } +#define ENABLE_TIMEOUT(socket) \ +{ \ + struct itimerval old_ival, new_ival; \ + void (*old_timer_sig)(int); \ +\ + old_timer_sig = signal(SIGALRM, SIG_DFL); \ + siginterrupt(SIGALRM, 1); \ + new_ival.it_value.tv_sec = socket->m_timeout / 1000; \ + new_ival.it_value.tv_usec = (socket->m_timeout % 1000) * 1000; \ + new_ival.it_interval.tv_sec = 0; \ + new_ival.it_interval.tv_usec = 0; \ + setitimer(ITIMER_REAL, &new_ival, &old_ival); + +#define DISABLE_TIMEOUT(socket) \ + signal(SIGALRM, old_timer_sig); \ + siginterrupt(SIGALRM, 0); \ + setitimer(ITIMER_REAL, &old_ival, NULL); \ +} + void _GSocket_Enable(GSocket *socket, GSocketEvent event) { socket->m_iocalls[event] = TRUE; - if (socket->m_fbacks[event]) - _GSocket_Install_Fallback(socket, event); + if (socket->m_cbacks[event]) + _GSocket_Install_Callback(socket, event); } void _GSocket_Disable(GSocket *socket, GSocketEvent event) { socket->m_iocalls[event] = FALSE; - if (socket->m_fbacks[event]) - _GSocket_Uninstall_Fallback(socket, event); + if (socket->m_cbacks[event]) + _GSocket_Uninstall_Callback(socket, event); } int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size) @@ -554,33 +661,54 @@ int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size) int ret; MASK_SIGNAL(); + ENABLE_TIMEOUT(socket); ret = recv(socket->m_fd, buffer, size, 0); + DISABLE_TIMEOUT(socket); UNMASK_SIGNAL(); - if (ret == -1) { + + if (ret == -1 && errno != EWOULDBLOCK) { socket->m_error = GSOCK_IOERR; return -1; } + if (errno == EWOULDBLOCK) { + socket->m_error = GSOCK_WOULDBLOCK; + return -1; + } return ret; } int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size) { struct sockaddr from; - int fromlen, ret; + SOCKLEN_T fromlen; + int ret; fromlen = sizeof(from); MASK_SIGNAL(); + ENABLE_TIMEOUT(socket); ret = recvfrom(socket->m_fd, buffer, size, 0, &from, &fromlen); + DISABLE_TIMEOUT(socket); UNMASK_SIGNAL(); - if (ret == -1) { + if (ret == -1 && errno != EWOULDBLOCK) { socket->m_error = GSOCK_IOERR; return -1; } + if (errno == EWOULDBLOCK) { + socket->m_error = GSOCK_WOULDBLOCK; + return -1; + } - if (!socket->m_peer) + /* Translate a system address into a GSocket address */ + if (!socket->m_peer) { socket->m_peer = GAddress_new(); - _GAddress_translate_from(socket->m_peer, &from, fromlen); + if (!socket->m_peer) { + socket->m_error = GSOCK_MEMERR; + return -1; + } + } + if (_GAddress_translate_from(socket->m_peer, &from, fromlen) != GSOCK_NOERROR) + return -1; return ret; } @@ -590,12 +718,18 @@ int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size) int ret; MASK_SIGNAL(); + ENABLE_TIMEOUT(socket); ret = send(socket->m_fd, buffer, size, 0); + DISABLE_TIMEOUT(socket); UNMASK_SIGNAL(); - if (ret == -1) { + if (ret == -1 && errno != EWOULDBLOCK) { socket->m_error = GSOCK_IOERR; return -1; } + if (errno == EWOULDBLOCK) { + socket->m_error = GSOCK_WOULDBLOCK; + return -1; + } return ret; } @@ -609,17 +743,27 @@ int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size) return -1; } - _GAddress_translate_to(socket->m_peer, &addr, &len); + if (_GAddress_translate_to(socket->m_peer, &addr, &len) != GSOCK_NOERROR) { + return -1; + } MASK_SIGNAL(); + ENABLE_TIMEOUT(socket); ret = sendto(socket->m_fd, buffer, size, 0, addr, len); + DISABLE_TIMEOUT(socket); UNMASK_SIGNAL(); - if (ret == -1) { + + /* Frees memory allocated from _GAddress_translate_to */ + free(addr); + + if (ret == -1 && errno != EWOULDBLOCK) { socket->m_error = GSOCK_IOERR; return -1; } - - free(addr); + if (errno == EWOULDBLOCK) { + socket->m_error = GSOCK_WOULDBLOCK; + return -1; + } return ret; } @@ -660,10 +804,16 @@ void _GSocket_Detected_Write(GSocket *socket) * ------------------------------------------------------------------------- */ +/* CHECK_ADDRESS verifies that the current family is either GSOCK_NOFAMILY or + * GSOCK_*family*. In case it is GSOCK_NOFAMILY, it initializes address to be + * a GSOCK_*family*. In other cases, it returns GSOCK_INVADDR. + */ #define CHECK_ADDRESS(address, family, retval) \ { \ if (address->m_family == GSOCK_NOFAMILY) \ - _GAddress_Init_##family(address); \ + if (_GAddress_Init_##family(address) != GSOCK_NOERROR) {\ + return address->m_error; \ + }\ if (address->m_family != GSOCK_##family) {\ address->m_error = GSOCK_INVADDR; \ return retval; \ @@ -676,6 +826,9 @@ GAddress *GAddress_new() address = (GAddress *)malloc(sizeof(GAddress)); + if (address == NULL) + return NULL; + address->m_family = GSOCK_NOFAMILY; address->m_addr = NULL; address->m_len = 0; @@ -690,10 +843,18 @@ GAddress *GAddress_copy(GAddress *address) assert(address != NULL); addr2 = (GAddress *)malloc(sizeof(GAddress)); + + if (addr2 == NULL) + return NULL; + memcpy(addr2, address, sizeof(GAddress)); if (address->m_addr) { addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len); + if (addr2->m_addr == NULL) { + free(addr2); + return NULL; + } memcpy(addr2->m_addr, address->m_addr, addr2->m_len); } @@ -721,7 +882,7 @@ GAddressType GAddress_GetFamily(GAddress *address) return address->m_family; } -void _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len){ +GSocketError _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len){ address->m_realfamily = addr->sa_family; switch (addr->sa_family) { case AF_INET: @@ -736,8 +897,10 @@ void _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len) break; #endif default: - - /* TODO error */ + { + address->m_error = GSOCK_INVOP; + return GSOCK_INVOP; + } } if (address->m_addr) @@ -745,20 +908,32 @@ void _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len) address->m_len = len; address->m_addr = (struct sockaddr *)malloc(len); + if (address->m_addr == NULL) { + address->m_error = GSOCK_MEMERR; + return GSOCK_MEMERR; + } memcpy(address->m_addr, addr, len); + + return GSOCK_NOERROR; } -void _GAddress_translate_to(GAddress *address, - struct sockaddr **addr, int *len) +GSocketError _GAddress_translate_to(GAddress *address, + struct sockaddr **addr, int *len) { if (!address->m_addr) { - /* TODO error */ - return; + address->m_error = GSOCK_INVADDR; + return GSOCK_INVADDR; } *len = address->m_len; *addr = (struct sockaddr *)malloc(address->m_len); + if (*addr == NULL) { + address->m_error = GSOCK_MEMERR; + return GSOCK_MEMERR; + } + memcpy(*addr, address->m_addr, address->m_len); + return GSOCK_NOERROR; } /* @@ -767,14 +942,22 @@ void _GAddress_translate_to(GAddress *address, * ------------------------------------------------------------------------- */ -void _GAddress_Init_INET(GAddress *address) +GSocketError _GAddress_Init_INET(GAddress *address) { + address->m_addr = (struct sockaddr *)malloc(sizeof(struct sockaddr_in)); + if (address->m_addr == NULL) { + address->m_error = GSOCK_MEMERR; + return GSOCK_MEMERR; + } + address->m_len = sizeof(struct sockaddr_in); - address->m_addr = (struct sockaddr *)malloc(address->m_len); + address->m_family = GSOCK_INET; address->m_realfamily = PF_INET; ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; + + return GSOCK_NOERROR; } GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) @@ -788,10 +971,19 @@ GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); - /* only name for the moment */ + /* If it is a numeric host name, convert it now */ +#if defined(HAVE_INET_ATON) if (inet_aton(hostname, addr) == 0) { +#elif defined(HAVE_INET_ADDR) + /* Fix from Guillermo Rodriguez Garcia */ + if ( (addr->s_addr = inet_addr(hostname)) == -1 ) { +#else + /* Use gethostbyname by default */ + if (1) { +#endif struct in_addr *array_addr; + /* It is a real name, we solve it */ if ((he = gethostbyname(hostname)) == NULL) { address->m_error = GSOCK_NOHOST; return GSOCK_NOHOST; @@ -828,10 +1020,9 @@ GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, if (!port) { address->m_error = GSOCK_INVPORT; - return GSOCK_INVOP; + return GSOCK_INVPORT; } - /* TODO: TCP or UDP */ se = getservbyname(port, protocol); if (!se) { if (isdigit(port[0])) { @@ -918,14 +1109,21 @@ unsigned short GAddress_INET_GetPort(GAddress *address) * ------------------------------------------------------------------------- */ -void _GAddress_Init_UNIX(GAddress *address) +GSocketError _GAddress_Init_UNIX(GAddress *address) { - address->m_len = sizeof(struct sockaddr_un); address->m_addr = (struct sockaddr *)malloc(address->m_len); + if (address->m_addr == NULL) { + address->m_error = GSOCK_MEMERR; + return GSOCK_MEMERR; + } + + address->m_len = sizeof(struct sockaddr_un); address->m_family = GSOCK_UNIX; address->m_realfamily = PF_UNIX; ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX; ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0; + + return TRUE; } GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) @@ -955,3 +1153,6 @@ GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) return GSOCK_NOERROR; } + +#endif + /* wxUSE_SOCKETS */