bcollet/socat
1
0
Fork 0
mirror of https://repo.or.cz/socat.git synced 2024-12-22 23:42:34 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
socat/xioopen.c
Gerhard Rieger 86c596bd51 merged feature protocol-type
2008-09-22 22:33:04 +02:00

534 lines
14 KiB
C
Raw Blame History

/* 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_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_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_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_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;
}
Reference in a new issue View git blame Copy permalink