/* source: xioopen.c */ /* Copyright Gerhard Rieger 2001-2008 */ /* Published under the GNU General Public License V.2, see file COPYING */ /* this is the source file of the extended open function */ #include "xiosysincludes.h" #include "xioopen.h" #include "xiomodes.h" #include "nestlex.h" static xiofile_t *xioallocfd(void); xiosingle_t hugo; static xiosingle_t *xioparse_single(const char **addr); static xiofile_t *xioparse_dual(const char **addr); static int xioopen_dual(xiofile_t *xfd, int xioflags); const struct addrname addressnames[] = { #if 1 #if WITH_STDIO { "-", &addr_stdio }, #endif #if defined(WITH_UNIX) && defined(WITH_ABSTRACT_UNIXSOCKET) { "abstract", &xioaddr_abstract_client }, { "abstract-client", &xioaddr_abstract_client }, { "abstract-connect", &xioaddr_abstract_connect }, #if WITH_LISTEN { "abstract-listen", &xioaddr_abstract_listen }, #endif { "abstract-recv", &xioaddr_abstract_recv }, { "abstract-recvfrom", &xioaddr_abstract_recvfrom }, { "abstract-sendto", &xioaddr_abstract_sendto }, #endif /* defined(WITH_UNIX) && defined(WITH_ABSTRACT_UNIXSOCKET) */ #if WITH_CREAT { "creat", &addr_creat }, { "create", &addr_creat }, #endif #if WITH_GENERICSOCKET { "datagram", &xioaddr_socket_datagram }, { "dgram", &xioaddr_socket_datagram }, #endif #if WITH_PIPE { "echo", &addr_pipe }, #endif #if WITH_EXEC { "exec", &addr_exec }, #endif #if WITH_FDNUM { "fd", &addr_fd }, #endif #if WITH_PIPE { "fifo", &addr_pipe }, #endif #if WITH_FILE { "file", &addr_open }, #endif #if WITH_GOPEN { "gopen", &addr_gopen }, #endif #if WITH_INTERFACE { "if", &xioaddr_interface }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_TCP { "inet", &addr_tcp_connect }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_TCP && WITH_LISTEN { "inet-l", &addr_tcp_listen }, { "inet-listen", &addr_tcp_listen }, #endif #if WITH_IP4 && WITH_TCP { "inet4", &addr_tcp4_connect }, #endif #if WITH_IP4 && WITH_TCP && WITH_LISTEN { "inet4-l", &addr_tcp4_listen }, { "inet4-listen", &addr_tcp4_listen }, #endif #if WITH_IP6 && WITH_TCP { "inet6", &addr_tcp6_connect }, #endif #if WITH_IP6 && WITH_TCP && WITH_LISTEN { "inet6-l", &addr_tcp6_listen }, { "inet6-listen", &addr_tcp6_listen }, #endif #if WITH_INTERFACE { "interface", &xioaddr_interface }, #endif #if WITH_RAWIP #if (WITH_IP4 || WITH_IP6) { "ip", &addr_rawip_sendto }, { "ip-datagram", &addr_rawip_datagram }, { "ip-dgram", &addr_rawip_datagram }, { "ip-recv", &addr_rawip_recv }, { "ip-recvfrom", &addr_rawip_recvfrom }, { "ip-send", &addr_rawip_sendto }, { "ip-sendto", &addr_rawip_sendto }, #endif #if WITH_IP4 { "ip4", &addr_rawip4_sendto }, { "ip4-datagram", &addr_rawip4_datagram }, { "ip4-dgram", &addr_rawip4_datagram }, { "ip4-recv", &addr_rawip4_recv }, { "ip4-recvfrom", &addr_rawip4_recvfrom }, { "ip4-send", &addr_rawip4_sendto }, { "ip4-sendto", &addr_rawip4_sendto }, #endif #if WITH_IP6 { "ip6", &addr_rawip6_sendto }, { "ip6-datagram", &addr_rawip6_datagram }, { "ip6-dgram", &addr_rawip6_datagram }, { "ip6-recv", &addr_rawip6_recv }, { "ip6-recvfrom", &addr_rawip6_recvfrom }, { "ip6-send", &addr_rawip6_sendto }, { "ip6-sendto", &addr_rawip6_sendto }, #endif #endif /* WITH_RAWIP */ #if WITH_UNIX { "local", &xioaddr_unix_connect }, #endif #if WITH_FILE { "open", &addr_open }, #endif #if WITH_OPENSSL { "openssl", &addr_openssl }, { "openssl-connect", &addr_openssl }, #if WITH_LISTEN { "openssl-listen", &addr_openssl_listen }, #endif #endif #if WITH_PIPE { "pipe", &addr_pipe }, #endif #if WITH_PROXY { "proxy", &addr_proxy_connect }, { "proxy-connect", &addr_proxy_connect }, #endif #if WITH_PTY { "pty", &addr_pty }, #endif #if WITH_READLINE { "readline", &addr_readline }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_SCTP { "sctp", &addr_sctp_connect }, { "sctp-connect", &addr_sctp_connect }, #if WITH_LISTEN { "sctp-l", &addr_sctp_listen }, { "sctp-listen", &addr_sctp_listen }, #endif #if WITH_IP4 { "sctp4", &addr_sctp4_connect }, { "sctp4-connect", &addr_sctp4_connect }, #if WITH_LISTEN { "sctp4-l", &addr_sctp4_listen }, { "sctp4-listen", &addr_sctp4_listen }, #endif #endif /* WITH_IP4 */ #if WITH_IP6 { "sctp6", &addr_sctp6_connect }, { "sctp6-connect", &addr_sctp6_connect }, #if WITH_LISTEN { "sctp6-l", &addr_sctp6_listen }, { "sctp6-listen", &addr_sctp6_listen }, #endif #endif /* WITH_IP6 */ #endif /* (WITH_IP4 || WITH_IP6) && WITH_SCTP */ #if WITH_GENERICSOCKET { "sendto", &xioaddr_socket_sendto }, #endif #if WITH_GENERICSOCKET { "socket-connect", &xioaddr_socket_connect }, { "socket-datagram", &xioaddr_socket_datagram }, #if WITH_LISTEN { "socket-listen", &xioaddr_socket_listen }, #endif /* WITH_LISTEN */ { "socket-recv", &xioaddr_socket_recv }, { "socket-recvfrom", &xioaddr_socket_recvfrom }, { "socket-sendto", &xioaddr_socket_sendto }, #endif #if WITH_SOCKS4 { "socks", &addr_socks4_connect }, { "socks4", &addr_socks4_connect }, #endif #if WITH_SOCKS4A { "socks4a", &addr_socks4a_connect }, #endif #if WITH_OPENSSL { "ssl", &addr_openssl }, #if WITH_LISTEN { "ssl-l", &addr_openssl_listen }, #endif #endif #if WITH_STDIO { "stderr", &addr_stderr }, { "stdin", &addr_stdin }, { "stdio", &addr_stdio }, { "stdout", &addr_stdout }, #endif #if WITH_SYSTEM { "system", &addr_system }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_TCP { "tcp", &addr_tcp_connect }, { "tcp-connect", &addr_tcp_connect }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_TCP && WITH_LISTEN { "tcp-l", &addr_tcp_listen }, { "tcp-listen", &addr_tcp_listen }, #endif #if WITH_IP4 && WITH_TCP { "tcp4", &addr_tcp4_connect }, { "tcp4-connect", &addr_tcp4_connect }, #endif #if WITH_IP4 && WITH_TCP && WITH_LISTEN { "tcp4-l", &addr_tcp4_listen }, { "tcp4-listen", &addr_tcp4_listen }, #endif #if WITH_IP6 && WITH_TCP { "tcp6", &addr_tcp6_connect }, { "tcp6-connect", &addr_tcp6_connect }, #endif #if WITH_IP6 && WITH_TCP && WITH_LISTEN { "tcp6-l", &addr_tcp6_listen }, { "tcp6-listen", &addr_tcp6_listen }, #endif #if WITH_TUN { "tun", &xioaddr_tun }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_UDP { "udp", &addr_udp_connect }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_UDP { "udp-connect", &addr_udp_connect }, { "udp-datagram", &addr_udp_datagram }, { "udp-dgram", &addr_udp_datagram }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_UDP && WITH_LISTEN { "udp-l", &addr_udp_listen }, { "udp-listen", &addr_udp_listen }, #endif #if (WITH_IP4 || WITH_IP6) && WITH_UDP { "udp-recv", &addr_udp_recv }, { "udp-recvfrom", &addr_udp_recvfrom }, { "udp-send", &addr_udp_sendto }, { "udp-sendto", &addr_udp_sendto }, #endif #if WITH_IP4 && WITH_UDP { "udp4", &addr_udp4_connect }, { "udp4-connect", &addr_udp4_connect }, { "udp4-datagram", &addr_udp4_datagram }, { "udp4-dgram", &addr_udp4_datagram }, #endif #if WITH_IP4 && WITH_UDP && WITH_LISTEN { "udp4-l", &addr_udp4_listen }, { "udp4-listen", &addr_udp4_listen }, #endif #if WITH_IP4 && WITH_UDP { "udp4-recv", &addr_udp4_recv }, { "udp4-recvfrom", &addr_udp4_recvfrom }, { "udp4-send", &addr_udp4_sendto }, { "udp4-sendto", &addr_udp4_sendto }, #endif #if WITH_IP6 && WITH_UDP { "udp6", &addr_udp6_connect }, { "udp6-connect", &addr_udp6_connect }, { "udp6-datagram", &addr_udp6_datagram }, { "udp6-dgram", &addr_udp6_datagram }, #endif #if WITH_IP6 && WITH_UDP && WITH_LISTEN { "udp6-l", &addr_udp6_listen }, { "udp6-listen", &addr_udp6_listen }, #endif #if WITH_IP6 && WITH_UDP { "udp6-recv", &addr_udp6_recv }, { "udp6-recvfrom", &addr_udp6_recvfrom }, { "udp6-send", &addr_udp6_sendto }, { "udp6-sendto", &addr_udp6_sendto }, #endif #if WITH_UNIX { "unix", &xioaddr_unix_client }, { "unix-client", &xioaddr_unix_client }, { "unix-connect", &xioaddr_unix_connect }, #endif #if WITH_UNIX && WITH_LISTEN { "unix-l", &xioaddr_unix_listen }, { "unix-listen", &xioaddr_unix_listen }, #endif #if WITH_UNIX { "unix-recv", &xioaddr_unix_recv }, { "unix-recvfrom", &xioaddr_unix_recvfrom }, { "unix-send", &xioaddr_unix_sendto }, { "unix-sendto", &xioaddr_unix_sendto }, #endif #else /* !0 */ # if WITH_INTEGRATE # include "xiointegrate.c" # else # include "xioaddrtab.c" # endif #endif /* !0 */ { NULL } /* end marker */ } ; int xioopen_single(xiofile_t *xfd, int xioflags); /* prepares a xiofile_t record for dual address type: sets the tag and allocates memory for the substreams. returns 0 on success, or <0 if an error occurred. */ int xioopen_makedual(xiofile_t *file) { file->tag = XIO_TAG_DUAL; file->common.flags = XIO_RDWR; if ((file->dual.stream[0] = (xiosingle_t *)xioallocfd()) == NULL) return -1; file->dual.stream[0]->flags = XIO_RDONLY; if ((file->dual.stream[1] = (xiosingle_t *)xioallocfd()) == NULL) return -1; file->dual.stream[1]->flags = XIO_WRONLY; return 0; } static xiofile_t *xioallocfd(void) { xiofile_t *fd; if ((fd = Calloc(1, sizeof(xiofile_t))) == NULL) { return NULL; } /* some default values; 0's and NULL's need not be applied (calloc'ed) */ fd->common.tag = XIO_TAG_INVALID; /* fd->common.addr = NULL; */ fd->common.flags = XIO_RDWR; #if WITH_RETRY /* fd->stream.retry = 0; */ /* fd->stream.forever = false; */ fd->stream.intervall.tv_sec = 1; /* fd->stream.intervall.tv_nsec = 0; */ #endif /* WITH_RETRY */ /* fd->common.ignoreeof = false; */ /* fd->common.eof = 0; */ fd->stream.fd = -1; fd->stream.dtype = XIODATA_STREAM; #if _WITH_SOCKET /* fd->stream.salen = 0; */ #endif /* _WITH_SOCKET */ fd->stream.howtoend = END_UNSPEC; /* fd->stream.name = NULL; */ fd->stream.escape = -1; /* fd->stream.para.exec.pid = 0; */ fd->stream.lineterm = LINETERM_RAW; /*!! support n socks */ if (!sock[0]) { sock[0] = fd; } else { sock[1] = fd; } return fd; } /* parse the argument that specifies a two-directional data stream and open the resulting address */ xiofile_t *xioopen(const char *addr, /* address specification */ int xioflags) { xiofile_t *xfd; if (xioinitialize() < 0) { return NULL; } if ((xfd = xioparse_dual(&addr)) == NULL) { return NULL; } if (xioopen_dual(xfd, xioflags) < 0) { /*!!! free something? */ return NULL; } return xfd; } static xiofile_t *xioparse_dual(const char **addr) { xiofile_t *xfd; xiosingle_t *sfd1; /* we parse a single address */ if ((sfd1 = xioparse_single(addr)) == NULL) { return NULL; } /* and now we see if we reached a dual-address separator */ if (!strncmp(*addr, xioopts.pipesep, strlen(xioopts.pipesep))) { /* yes we reached it, so we parse the second single address */ *addr += strlen(xioopts.pipesep); if ((xfd = xioallocfd()) == NULL) { free(sfd1); /*! and maybe have free some if its contents */ return NULL; } xfd->tag = XIO_TAG_DUAL; xfd->dual.stream[0] = sfd1; if ((xfd->dual.stream[1] = xioparse_single(addr)) == NULL) { return NULL; } return xfd; } /* a truly single address */ xfd = (xiofile_t *)sfd1; sfd1 = NULL; return xfd; } static int xioopen_dual(xiofile_t *xfd, int xioflags) { if (xfd->tag == XIO_TAG_DUAL) { /* a really dual address */ if ((xioflags&XIO_ACCMODE) != XIO_RDWR) { Warn("unidirectional open of dual address"); } if (((xioflags&XIO_ACCMODE)+1) & (XIO_RDONLY+1)) { if (xioopen_single((xiofile_t *)xfd->dual.stream[0], XIO_RDONLY|(xioflags&~XIO_ACCMODE&~XIO_MAYEXEC)) < 0) { return -1; } } if (((xioflags&XIO_ACCMODE)+1) & (XIO_WRONLY+1)) { if (xioopen_single((xiofile_t *)xfd->dual.stream[1], XIO_WRONLY|(xioflags&~XIO_ACCMODE&~XIO_MAYEXEC)) < 0) { xioclose((xiofile_t *)xfd->dual.stream[0]); return -1; } } return 0; } return xioopen_single(xfd, xioflags); } static xiosingle_t *xioparse_single(const char **addr) { xiofile_t *xfd; xiosingle_t *sfd; struct addrname *ae; const struct addrdesc *addrdesc = NULL; const char *ends[4+1]; const char *hquotes[] = { "'", NULL } ; const char *squotes[] = { "\"", NULL } ; const char *nests[] = { "'", "'", "(", ")", "[", "]", "{", "}", NULL } ; char token[512], *tokp; size_t len; int i; /* init */ i = 0; /*ends[i++] = xioopts.chainsep;*/ /* default: "|" */ ends[i++] = xioopts.pipesep; /* default: "!!" */ ends[i++] = ","/*xioopts.comma*/; /* default: "," */ ends[i++] = ":"/*xioopts.colon*/; /* default: ":" */ ends[i++] = NULL; if ((xfd = xioallocfd()) == NULL) { return NULL; } sfd = &xfd->stream; sfd->argc = 0; len = sizeof(token); tokp = token; if (nestlex(addr, &tokp, &len, ends, hquotes, squotes, nests, true, true, false) < 0) { Error2("keyword too long, in address \"%s%s\"", token, *addr); } *tokp = '\0'; /*! len? */ ae = (struct addrname *) keyw((struct wordent *)&addressnames, token, sizeof(addressnames)/sizeof(struct addrname)-1); if (ae) { addrdesc = ae->desc; /* keyword */ if ((sfd->argv[sfd->argc++] = strdup(token)) == NULL) { Error1("strdup(\"%s\"): out of memory", token); } } else { if (false) { ; #if WITH_FDNUM } else if (isdigit(token[0]&0xff) && token[1] == '\0') { Info1("interpreting address \"%s\" as file descriptor", token); addrdesc = &addr_fd; if ((sfd->argv[sfd->argc++] = strdup("FD")) == NULL) { Error("strdup(\"FD\"): out of memory"); } if ((sfd->argv[sfd->argc++] = strdup(token)) == NULL) { Error1("strdup(\"%s\"): out of memory", token); } /*! check argc overflow */ #endif /* WITH_FDNUM */ #if WITH_GOPEN } else if (strchr(token, '/')) { Info1("interpreting address \"%s\" as file name", token); addrdesc = &addr_gopen; if ((sfd->argv[sfd->argc++] = strdup("GOPEN")) == NULL) { Error("strdup(\"GOPEN\"): out of memory"); } if ((sfd->argv[sfd->argc++] = strdup(token)) == NULL) { Error1("strdup(\"%s\"): out of memory", token); } /*! check argc overflow */ #endif /* WITH_GOPEN */ } else { Error1("unknown device/address \"%s\"", token); /*!!! free something*/ return NULL; } } sfd->tag = XIO_TAG_RDWR; sfd->addr = addrdesc; while (!strncmp(*addr, xioopts.paramsep, strlen(xioopts.paramsep))) { *addr += strlen(xioopts.paramsep); len = sizeof(token); tokp = token; if (nestlex(addr, &tokp, &len, ends, hquotes, squotes, nests, true, true, false) != 0) { Error2("syntax error in address \"%s%s\"", token, *addr); } *tokp = '\0'; if ((sfd->argv[sfd->argc++] = strdup(token)) == NULL) { Error1("strdup(\"%s\"): out of memory", token); } } if (parseopts(addr, addrdesc->groups, &sfd->opts) < 0) { free(xfd); return NULL; } return sfd; } int xioopen_single(xiofile_t *xfd, int xioflags) { const struct addrdesc *addrdesc; int result; if ((xioflags&XIO_ACCMODE) == XIO_RDONLY) { xfd->tag = XIO_TAG_RDONLY; } else if ((xioflags&XIO_ACCMODE) == XIO_WRONLY) { xfd->tag = XIO_TAG_WRONLY; } else if ((xioflags&XIO_ACCMODE) == XIO_RDWR) { xfd->tag = XIO_TAG_RDWR; } else { Error1("invalid mode for address \"%s\"", xfd->stream.argv[0]); } xfd->stream.flags &= (~XIO_ACCMODE); xfd->stream.flags |= (xioflags & XIO_ACCMODE); addrdesc = xfd->stream.addr; result = (*addrdesc->func)(xfd->stream.argc, xfd->stream.argv, xfd->stream.opts, xioflags, xfd, addrdesc->groups, addrdesc->arg1, addrdesc->arg2, addrdesc->arg3); return result; }