/* Jim - A small embeddable Tcl interpreter * * Copyright 2005 Salvatore Sanfilippo * Copyright 2005 Clemens Hintze * Copyright 2005 patthoyts - Pat Thoyts * Copyright 2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com * Copyright 2008 Andrew Lunn * Copyright 2008 Duane Ellis * Copyright 2008 Uwe Klein * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * The views and conclusions contained in the software and documentation * are those of the authors and should not be interpreted as representing * official policies, either expressed or implied, of the Jim Tcl Project. **/ #include "jimautoconf.h" #ifndef _GNU_SOURCE #define _GNU_SOURCE #endif #include #include #include #include #include #ifdef HAVE_UNISTD_H #include #include #endif #ifdef HAVE_UTIL_H #include #endif #ifdef HAVE_PTY_H #include #endif #include "jim.h" #include "jimiocompat.h" #if defined(HAVE_SYS_SOCKET_H) && defined(HAVE_SELECT) && defined(HAVE_NETINET_IN_H) && defined(HAVE_NETDB_H) && defined(HAVE_ARPA_INET_H) #include #include #include #include #include #ifdef HAVE_SYS_UN_H #include #endif #define HAVE_SOCKETS #elif defined (__MINGW32__) /* currently mingw32 doesn't support sockets, but has pipe, fdopen */ #else #define JIM_ANSIC #endif #if defined(JIM_SSL) #include #include #endif #ifdef HAVE_TERMIOS_H #include #endif #include "jim-eventloop.h" #include "jim-subcmd.h" #define AIO_CMD_LEN 32 /* e.g. aio.handleXXXXXX */ #define AIO_BUF_LEN 256 /* Can keep this small and rely on stdio buffering */ #ifndef HAVE_FTELLO #define ftello ftell #endif #ifndef HAVE_FSEEKO #define fseeko fseek #endif #define AIO_KEEPOPEN 1 #define AIO_NODELETE 2 #define AIO_EOF 4 #if defined(JIM_IPV6) #define IPV6 1 #else #define IPV6 0 #ifndef PF_INET6 #define PF_INET6 0 #endif #endif #if defined(HAVE_SYS_UN_H) && defined(PF_UNIX) #define UNIX_SOCKETS 1 #else #define UNIX_SOCKETS 0 #endif #ifdef JIM_ANSIC /* no fdopen() with ANSIC, so can't support these */ #undef HAVE_PIPE #undef HAVE_SOCKETPAIR #endif #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) /* Avoid type punned pointers */ union sockaddr_any { struct sockaddr sa; struct sockaddr_in sin; #if IPV6 struct sockaddr_in6 sin6; #endif #if UNIX_SOCKETS struct sockaddr_un sun; #endif }; #ifndef HAVE_INET_NTOP const char *inet_ntop(int af, const void *src, char *dst, int size) { if (af != PF_INET) { return NULL; } snprintf(dst, size, "%s", inet_ntoa(((struct sockaddr_in *)src)->sin_addr)); return dst; } #endif #endif /* JIM_BOOTSTRAP */ struct AioFile; typedef struct { int (*writer)(struct AioFile *af, const char *buf, int len); int (*reader)(struct AioFile *af, char *buf, int len); const char *(*getline)(struct AioFile *af, char *buf, int len); int (*error)(const struct AioFile *af); const char *(*strerror)(struct AioFile *af); int (*verify)(struct AioFile *af); int (*eof)(struct AioFile *af); int (*pending)(struct AioFile *af); } JimAioFopsType; typedef struct AioFile { FILE *fp; Jim_Obj *filename; int type; int flags; /* AIO_KEEPOPEN? keep FILE* */ int fd; int addr_family; void *ssl; const JimAioFopsType *fops; } AioFile; static int stdio_writer(struct AioFile *af, const char *buf, int len) { return fwrite(buf, 1, len, af->fp); } static int stdio_reader(struct AioFile *af, char *buf, int len) { return fread(buf, 1, len, af->fp); } static const char *stdio_getline(struct AioFile *af, char *buf, int len) { return fgets(buf, len, af->fp); } static int stdio_error(const AioFile *af) { if (!ferror(af->fp)) { return JIM_OK; } clearerr(af->fp); /* EAGAIN and similar are not error conditions. Just treat them like eof */ if (feof(af->fp) || errno == EAGAIN || errno == EINTR) { return JIM_OK; } #ifdef ECONNRESET if (errno == ECONNRESET) { return JIM_OK; } #endif #ifdef ECONNABORTED if (errno == ECONNABORTED) { return JIM_OK; } #endif return JIM_ERR; } static const char *stdio_strerror(struct AioFile *af) { return strerror(errno); } static int stdio_eof(struct AioFile *af) { return feof(af->fp); } static const JimAioFopsType stdio_fops = { stdio_writer, stdio_reader, stdio_getline, stdio_error, stdio_strerror, NULL, /* verify */ stdio_eof, NULL, /* pending */ }; #if defined(JIM_SSL) && !defined(JIM_BOOTSTRAP) static SSL_CTX *JimAioSslCtx(Jim_Interp *interp); static int ssl_writer(struct AioFile *af, const char *buf, int len) { return SSL_write(af->ssl, buf, len); } static int ssl_pending(struct AioFile *af) { return SSL_pending(af->ssl); } static int ssl_reader(struct AioFile *af, char *buf, int len) { int ret = SSL_read(af->ssl, buf, len); switch (SSL_get_error(af->ssl, ret)) { case SSL_ERROR_NONE: return ret; case SSL_ERROR_SYSCALL: case SSL_ERROR_ZERO_RETURN: if (errno != EAGAIN) { af->flags |= AIO_EOF; } return 0; case SSL_ERROR_SSL: default: if (errno == EAGAIN) { return 0; } af->flags |= AIO_EOF; return -1; } } static int ssl_eof(struct AioFile *af) { return (af->flags & AIO_EOF); } static const char *ssl_getline(struct AioFile *af, char *buf, int len) { size_t i; for (i = 0; i < len - 1 && !ssl_eof(af); i++) { int ret = ssl_reader(af, &buf[i], 1); if (ret != 1) { break; } if (buf[i] == '\n') { i++; break; } } buf[i] = '\0'; if (i == 0 && ssl_eof(af)) { return NULL; } return buf; } static int ssl_error(const struct AioFile *af) { int ret = SSL_get_error(af->ssl, 0); /* XXX should we be following the same logic as ssl_reader() here? */ if (ret == SSL_ERROR_ZERO_RETURN || ret == SSL_ERROR_NONE) { return JIM_OK; } if (ret == SSL_ERROR_SYSCALL) { return stdio_error(af); } return JIM_ERR; } static const char *ssl_strerror(struct AioFile *af) { int err = ERR_get_error(); if (err) { return ERR_error_string(err, NULL); } else { return stdio_strerror(af); } } static int ssl_verify(struct AioFile *af) { X509 *cert; cert = SSL_get_peer_certificate(af->ssl); if (!cert) { return JIM_ERR; } X509_free(cert); if (SSL_get_verify_result(af->ssl) == X509_V_OK) { return JIM_OK; } return JIM_ERR; } static const JimAioFopsType ssl_fops = { ssl_writer, ssl_reader, ssl_getline, ssl_error, ssl_strerror, ssl_verify, ssl_eof, ssl_pending, }; #endif /* JIM_BOOTSTRAP */ static int JimAioSubCmdProc(Jim_Interp *interp, int argc, Jim_Obj *const *argv); static AioFile *JimMakeChannel(Jim_Interp *interp, FILE *fh, int fd, Jim_Obj *filename, const char *hdlfmt, int family, const char *mode, int flags); #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) #ifndef HAVE_GETADDRINFO /* * Poor man's getaddrinfo(). * hints->ai_family must be set and must be PF_INET or PF_INET6 * Only returns the first matching result. * servname must be numeric. */ struct addrinfo { int ai_family; socklen_t ai_addrlen; struct sockaddr *ai_addr; /* simply points to ai_storage */ union sockaddr_any ai_storage; }; static int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) { struct hostent *he; char *end; unsigned long port = strtoul(servname, &end, 10); if (port == 0 || port > 65536 || *end) { errno = EINVAL; return -1; } if ((he = gethostbyname(hostname)) != NULL) { int i; for (i = 0; he->h_addr_list[i]; i++) { if (he->h_addrtype == hints->ai_family) { struct addrinfo *ai = malloc(sizeof(*ai)); memset(ai, 0, sizeof(*ai)); ai->ai_family = he->h_addrtype; ai->ai_addr = &ai->ai_storage.sa; if (ai->ai_family == PF_INET) { ai->ai_addrlen = sizeof(ai->ai_storage.sin); ai->ai_storage.sin.sin_family = he->h_addrtype; assert(sizeof(ai->ai_storage.sin.sin_addr) == he->h_length); memcpy(&ai->ai_storage.sin.sin_addr, he->h_addr_list[i], he->h_length); ai->ai_storage.sin.sin_port = htons(port); } #if IPV6 else { ai->ai_addrlen = sizeof(ai->ai_storage.sin6); ai->ai_storage.sin6.sin6_family = he->h_addrtype; assert(sizeof(ai->ai_storage.sin6.sin6_addr) == he->h_length); memcpy(&ai->ai_storage.sin6.sin6_addr, he->h_addr_list[i], he->h_length); ai->ai_storage.sin6.sin6_port = htons(port); } #endif *res = ai; return 0; } } } return ENOENT; } static void freeaddrinfo(struct addrinfo *ai) { free(ai); } #endif static int JimParseIPv6Address(Jim_Interp *interp, int socktype, const char *hostport, union sockaddr_any *sa, socklen_t *salen) { #if IPV6 /* * An IPv6 addr/port looks like: * [::1] * [::1]:2000 * [fe80::223:6cff:fe95:bdc0%en1]:2000 * [::]:2000 * 2000 * * Note that the "any" address is ::, which is the same as when no address is specified. */ char *sthost = NULL; const char *stport; int ret = JIM_OK; struct addrinfo req; struct addrinfo *ai; stport = strrchr(hostport, ':'); if (!stport) { /* No : so, the whole thing is the port */ stport = hostport; hostport = "::"; sthost = Jim_StrDup(hostport); } else { stport++; } if (*hostport == '[') { /* This is a numeric ipv6 address */ char *pt = strchr(++hostport, ']'); if (pt) { sthost = Jim_StrDupLen(hostport, pt - hostport); } } if (!sthost) { sthost = Jim_StrDupLen(hostport, stport - hostport - 1); } memset(&req, '\0', sizeof(req)); req.ai_family = PF_INET6; req.ai_socktype = socktype; if (getaddrinfo(sthost, stport, &req, &ai)) { Jim_SetResultFormatted(interp, "Not a valid address: %s:%s", sthost, stport); ret = JIM_ERR; } else { memcpy(&sa->sin6, ai->ai_addr, ai->ai_addrlen); *salen = ai->ai_addrlen; freeaddrinfo(ai); } Jim_Free(sthost); return ret; #else Jim_SetResultString(interp, "ipv6 not supported", -1); return JIM_ERR; #endif } static int JimParseIpAddress(Jim_Interp *interp, int socktype, const char *hostport, union sockaddr_any *sa, socklen_t *salen) { /* An IPv4 addr/port looks like: * 192.168.1.5 * 192.168.1.5:2000 * 2000 * * If the address is missing, INADDR_ANY is used. * If the port is missing, 0 is used (only useful for server sockets). */ char *sthost = NULL; const char *stport; int ret = JIM_OK; struct addrinfo req; struct addrinfo *ai; stport = strrchr(hostport, ':'); if (!stport) { /* No : so, the whole thing is the port */ stport = hostport; sthost = Jim_StrDup("0.0.0.0"); } else { sthost = Jim_StrDupLen(hostport, stport - hostport); stport++; } memset(&req, '\0', sizeof(req)); req.ai_family = PF_INET; req.ai_socktype = socktype; if (getaddrinfo(sthost, stport, &req, &ai)) { ret = JIM_ERR; } else { memcpy(&sa->sin, ai->ai_addr, ai->ai_addrlen); *salen = ai->ai_addrlen; freeaddrinfo(ai); } Jim_Free(sthost); if (ret != JIM_OK) { Jim_SetResultFormatted(interp, "Not a valid address: %s", hostport); } return ret; } #if UNIX_SOCKETS static int JimParseDomainAddress(Jim_Interp *interp, const char *path, union sockaddr_any *sa, socklen_t *salen) { sa->sun.sun_family = PF_UNIX; snprintf(sa->sun.sun_path, sizeof(sa->sun.sun_path), "%s", path); *salen = strlen(sa->sun.sun_path) + 1 + sizeof(sa->sun.sun_family); return JIM_OK; } #endif static int JimParseSocketAddress(Jim_Interp *interp, int family, int socktype, const char *addr, union sockaddr_any *sa, socklen_t *salen) { switch (family) { #if UNIX_SOCKETS case PF_UNIX: return JimParseDomainAddress(interp, addr, sa, salen); #endif case PF_INET6: return JimParseIPv6Address(interp, socktype, addr, sa, salen); case PF_INET: return JimParseIpAddress(interp, socktype, addr, sa, salen); } return JIM_ERR; } /** * Format that address in 'sa' as a string and return it as a zero-refcount object. * */ static Jim_Obj *JimFormatSocketAddress(Jim_Interp *interp, const union sockaddr_any *sa, socklen_t salen) { /* INET6_ADDRSTRLEN is 46. Add some for [] and port */ char addrbuf[60]; const char *addr = addrbuf; int addrlen = -1; switch (sa->sa.sa_family) { #if UNIX_SOCKETS case PF_UNIX: addr = sa->sun.sun_path; addrlen = salen - 1 - sizeof(sa->sun.sun_family); if (addrlen < 0) { addrlen = 0; } break; #endif #if IPV6 case PF_INET6: addrbuf[0] = '['; /* Allow 9 for []:65535\0 */ inet_ntop(sa->sa.sa_family, &sa->sin6.sin6_addr, addrbuf + 1, sizeof(addrbuf) - 9); snprintf(addrbuf + strlen(addrbuf), 8, "]:%d", ntohs(sa->sin6.sin6_port)); break; #endif case PF_INET: /* Allow 7 for :65535\0 */ inet_ntop(sa->sa.sa_family, &sa->sin.sin_addr, addrbuf, sizeof(addrbuf) - 7); snprintf(addrbuf + strlen(addrbuf), 7, ":%d", ntohs(sa->sin.sin_port)); break; default: /* Otherwise just an empty address */ addr = ""; break; } return Jim_NewStringObj(interp, addr, addrlen); } static int JimSetVariableSocketAddress(Jim_Interp *interp, Jim_Obj *varObjPtr, const union sockaddr_any *sa, socklen_t salen) { int ret; Jim_Obj *objPtr = JimFormatSocketAddress(interp, sa, salen); Jim_IncrRefCount(objPtr); ret = Jim_SetVariable(interp, varObjPtr, objPtr); Jim_DecrRefCount(interp, objPtr); return ret; } static Jim_Obj *aio_sockname(Jim_Interp *interp, AioFile *af) { union sockaddr_any sa; socklen_t salen = sizeof(sa); if (getsockname(af->fd, &sa.sa, &salen) < 0) { return NULL; } return JimFormatSocketAddress(interp, &sa, salen); } #endif /* JIM_BOOTSTRAP */ static const char *JimAioErrorString(AioFile *af) { if (af && af->fops) return af->fops->strerror(af); return strerror(errno); } static void JimAioSetError(Jim_Interp *interp, Jim_Obj *name) { AioFile *af = Jim_CmdPrivData(interp); if (name) { Jim_SetResultFormatted(interp, "%#s: %s", name, JimAioErrorString(af)); } else { Jim_SetResultString(interp, JimAioErrorString(af), -1); } } static int JimCheckStreamError(Jim_Interp *interp, AioFile *af) { int ret = af->fops->error(af); if (ret) { JimAioSetError(interp, af->filename); } return ret; } static void JimAioDelProc(Jim_Interp *interp, void *privData) { AioFile *af = privData; JIM_NOTUSED(interp); #if UNIX_SOCKETS if (af->addr_family == PF_UNIX && (af->flags & AIO_NODELETE) == 0) { /* If this is bound, delete the socket file now */ Jim_Obj *filenameObj = aio_sockname(interp, af); if (filenameObj) { if (Jim_Length(filenameObj)) { remove(Jim_String(filenameObj)); } Jim_FreeNewObj(interp, filenameObj); } } #endif Jim_DecrRefCount(interp, af->filename); #ifdef jim_ext_eventloop /* remove all existing EventHandlers */ Jim_DeleteFileHandler(interp, af->fd, JIM_EVENT_READABLE | JIM_EVENT_WRITABLE | JIM_EVENT_EXCEPTION); #endif #if defined(JIM_SSL) if (af->ssl != NULL) { SSL_free(af->ssl); } #endif if (!(af->flags & AIO_KEEPOPEN)) { fclose(af->fp); } Jim_Free(af); } static int aio_cmd_read(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); char buf[AIO_BUF_LEN]; Jim_Obj *objPtr; int nonewline = 0; int pending = 0; jim_wide neededLen = -1; /* -1 is "read as much as possible" */ static const char * const options[] = { "-pending", "-nonewline", NULL }; enum { OPT_PENDING, OPT_NONEWLINE }; int option; if (argc) { if (*Jim_String(argv[0]) == '-') { if (Jim_GetEnum(interp, argv[0], options, &option, NULL, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_PENDING: if (!af->fops->pending) { Jim_SetResultString(interp, "-pending not supported on this connection type", -1); return JIM_ERR; } pending++; break; case OPT_NONEWLINE: nonewline++; break; } } else { if (Jim_GetWide(interp, argv[0], &neededLen) != JIM_OK) return JIM_ERR; if (neededLen < 0) { Jim_SetResultString(interp, "invalid parameter: negative len", -1); return JIM_ERR; } } argc--; argv++; } if (argc) { return -1; } objPtr = Jim_NewStringObj(interp, NULL, 0); while (neededLen != 0) { int retval; int readlen; if (neededLen == -1) { readlen = AIO_BUF_LEN; } else { readlen = (neededLen > AIO_BUF_LEN ? AIO_BUF_LEN : neededLen); } retval = af->fops->reader(af, buf, pending ? 1 : readlen); if (retval > 0) { Jim_AppendString(interp, objPtr, buf, retval); if (neededLen != -1) { neededLen -= retval; } else if (pending) { /* If pending was specified, after we do the initial read, * we do a second read to fetch any buffered data */ neededLen = af->fops->pending(af); } } if (retval <= 0) { break; } } /* Check for error conditions */ if (JimCheckStreamError(interp, af)) { Jim_FreeNewObj(interp, objPtr); return JIM_ERR; } if (nonewline) { int len; const char *s = Jim_GetString(objPtr, &len); if (len > 0 && s[len - 1] == '\n') { objPtr->length--; objPtr->bytes[objPtr->length] = '\0'; } } Jim_SetResult(interp, objPtr); return JIM_OK; } AioFile *Jim_AioFile(Jim_Interp *interp, Jim_Obj *command) { Jim_Cmd *cmdPtr = Jim_GetCommand(interp, command, JIM_ERRMSG); /* XXX: There ought to be a supported API for this */ if (cmdPtr && !cmdPtr->isproc && cmdPtr->u.native.cmdProc == JimAioSubCmdProc) { return (AioFile *) cmdPtr->u.native.privData; } Jim_SetResultFormatted(interp, "Not a filehandle: \"%#s\"", command); return NULL; } FILE *Jim_AioFilehandle(Jim_Interp *interp, Jim_Obj *command) { AioFile *af; af = Jim_AioFile(interp, command); if (af == NULL) { return NULL; } return af->fp; } static int aio_cmd_getfd(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); fflush(af->fp); Jim_SetResultInt(interp, fileno(af->fp)); return JIM_OK; } static int aio_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); jim_wide count = 0; jim_wide maxlen = JIM_WIDE_MAX; AioFile *outf = Jim_AioFile(interp, argv[0]); if (outf == NULL) { return JIM_ERR; } if (argc == 2) { if (Jim_GetWide(interp, argv[1], &maxlen) != JIM_OK) { return JIM_ERR; } } while (count < maxlen) { /* A reasonable compromise between stack size and speed */ char buf[AIO_BUF_LEN]; jim_wide len = maxlen - count; if (len > sizeof(buf)) { len = sizeof(buf); } len = af->fops->reader(af, buf, len); if (len <= 0) { break; } if (outf->fops->writer(outf, buf, len) != len) { break; } count += len; } if (JimCheckStreamError(interp, af) || JimCheckStreamError(interp, outf)) { return JIM_ERR; } Jim_SetResultInt(interp, count); return JIM_OK; } static int aio_cmd_gets(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); char buf[AIO_BUF_LEN]; Jim_Obj *objPtr; int len; errno = 0; objPtr = Jim_NewStringObj(interp, NULL, 0); while (1) { buf[AIO_BUF_LEN - 1] = '_'; if (af->fops->getline(af, buf, AIO_BUF_LEN) == NULL) break; if (buf[AIO_BUF_LEN - 1] == '\0' && buf[AIO_BUF_LEN - 2] != '\n') { Jim_AppendString(interp, objPtr, buf, AIO_BUF_LEN - 1); } else { len = strlen(buf); if (len && (buf[len - 1] == '\n')) { /* strip "\n" */ len--; } Jim_AppendString(interp, objPtr, buf, len); break; } } if (JimCheckStreamError(interp, af)) { /* I/O error */ Jim_FreeNewObj(interp, objPtr); return JIM_ERR; } if (argc) { if (Jim_SetVariable(interp, argv[0], objPtr) != JIM_OK) { Jim_FreeNewObj(interp, objPtr); return JIM_ERR; } len = Jim_Length(objPtr); if (len == 0 && af->fops->eof(af)) { /* On EOF returns -1 if varName was specified */ len = -1; } Jim_SetResultInt(interp, len); } else { Jim_SetResult(interp, objPtr); } return JIM_OK; } static int aio_cmd_puts(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int wlen; const char *wdata; Jim_Obj *strObj; if (argc == 2) { if (!Jim_CompareStringImmediate(interp, argv[0], "-nonewline")) { return -1; } strObj = argv[1]; } else { strObj = argv[0]; } wdata = Jim_GetString(strObj, &wlen); if (af->fops->writer(af, wdata, wlen) == wlen) { if (argc == 2 || af->fops->writer(af, "\n", 1) == 1) { return JIM_OK; } } JimAioSetError(interp, af->filename); return JIM_ERR; } static int aio_cmd_isatty(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { #ifdef HAVE_ISATTY AioFile *af = Jim_CmdPrivData(interp); Jim_SetResultInt(interp, isatty(fileno(af->fp))); #else Jim_SetResultInt(interp, 0); #endif return JIM_OK; } #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) static int aio_cmd_recvfrom(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); char *buf; union sockaddr_any sa; long len; socklen_t salen = sizeof(sa); int rlen; if (Jim_GetLong(interp, argv[0], &len) != JIM_OK) { return JIM_ERR; } buf = Jim_Alloc(len + 1); rlen = recvfrom(fileno(af->fp), buf, len, 0, &sa.sa, &salen); if (rlen < 0) { Jim_Free(buf); JimAioSetError(interp, NULL); return JIM_ERR; } buf[rlen] = 0; Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, buf, rlen)); if (argc > 1) { return JimSetVariableSocketAddress(interp, argv[1], &sa, salen); } return JIM_OK; } static int aio_cmd_sendto(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int wlen; int len; const char *wdata; union sockaddr_any sa; const char *addr = Jim_String(argv[1]); socklen_t salen; if (JimParseSocketAddress(interp, af->addr_family, SOCK_DGRAM, addr, &sa, &salen) != JIM_OK) { return JIM_ERR; } wdata = Jim_GetString(argv[0], &wlen); /* Note that we don't validate the socket type. Rely on sendto() failing if appropriate */ len = sendto(fileno(af->fp), wdata, wlen, 0, &sa.sa, salen); if (len < 0) { JimAioSetError(interp, NULL); return JIM_ERR; } Jim_SetResultInt(interp, len); return JIM_OK; } static int aio_cmd_accept(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int sock; union sockaddr_any sa; socklen_t salen = sizeof(sa); sock = accept(af->fd, &sa.sa, &salen); if (sock < 0) { JimAioSetError(interp, NULL); return JIM_ERR; } if (argc > 0) { if (JimSetVariableSocketAddress(interp, argv[0], &sa, salen) != JIM_OK) { return JIM_ERR; } } /* Create the file command */ return JimMakeChannel(interp, NULL, sock, Jim_NewStringObj(interp, "accept", -1), "aio.sockstream%ld", af->addr_family, "r+", AIO_NODELETE) ? JIM_OK : JIM_ERR; } static int aio_cmd_sockname(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); Jim_Obj *objPtr = aio_sockname(interp, af); if (objPtr == NULL) { JimAioSetError(interp, NULL); return JIM_ERR; } Jim_SetResult(interp, objPtr); return JIM_OK; } static int aio_cmd_peername(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); union sockaddr_any sa; socklen_t salen = sizeof(sa); if (getpeername(af->fd, &sa.sa, &salen) < 0) { JimAioSetError(interp, NULL); return JIM_ERR; } Jim_SetResult(interp, JimFormatSocketAddress(interp, &sa, salen)); return JIM_OK; } static int aio_cmd_listen(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); long backlog; if (Jim_GetLong(interp, argv[0], &backlog) != JIM_OK) { return JIM_ERR; } if (listen(af->fd, backlog)) { JimAioSetError(interp, NULL); return JIM_ERR; } return JIM_OK; } #endif /* JIM_BOOTSTRAP */ static int aio_cmd_flush(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); if (fflush(af->fp) == EOF) { JimAioSetError(interp, af->filename); return JIM_ERR; } return JIM_OK; } static int aio_cmd_eof(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); Jim_SetResultInt(interp, !!af->fops->eof(af)); return JIM_OK; } static int aio_cmd_close(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { if (argc == 3) { int option = -1; #if defined(HAVE_SOCKETS) static const char * const options[] = { "r", "w", "-nodelete", NULL }; enum { OPT_R, OPT_W, OPT_NODELETE }; AioFile *af = Jim_CmdPrivData(interp); if (Jim_GetEnum(interp, argv[2], options, &option, NULL, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } #endif switch (option) { #if defined(HAVE_SHUTDOWN) case OPT_R: case OPT_W: if (shutdown(af->fd, option == OPT_R ? SHUT_RD : SHUT_WR) == 0) { return JIM_OK; } JimAioSetError(interp, NULL); return JIM_ERR; #endif #if UNIX_SOCKETS case OPT_NODELETE: if (af->addr_family == PF_UNIX) { af->flags |= AIO_NODELETE; break; } /* fall through */ #endif default: Jim_SetResultString(interp, "not supported", -1); return JIM_ERR; } } return Jim_DeleteCommand(interp, argv[0]); } static int aio_cmd_seek(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int orig = SEEK_SET; jim_wide offset; if (argc == 2) { if (Jim_CompareStringImmediate(interp, argv[1], "start")) orig = SEEK_SET; else if (Jim_CompareStringImmediate(interp, argv[1], "current")) orig = SEEK_CUR; else if (Jim_CompareStringImmediate(interp, argv[1], "end")) orig = SEEK_END; else { return -1; } } if (Jim_GetWide(interp, argv[0], &offset) != JIM_OK) { return JIM_ERR; } if (fseeko(af->fp, offset, orig) == -1) { JimAioSetError(interp, af->filename); return JIM_ERR; } return JIM_OK; } static int aio_cmd_tell(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); Jim_SetResultInt(interp, ftello(af->fp)); return JIM_OK; } static int aio_cmd_filename(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); Jim_SetResult(interp, af->filename); return JIM_OK; } #ifdef O_NDELAY static int aio_cmd_ndelay(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int fmode = fcntl(af->fd, F_GETFL); if (argc) { long nb; if (Jim_GetLong(interp, argv[0], &nb) != JIM_OK) { return JIM_ERR; } if (nb) { fmode |= O_NDELAY; } else { fmode &= ~O_NDELAY; } (void)fcntl(af->fd, F_SETFL, fmode); } Jim_SetResultInt(interp, (fmode & O_NONBLOCK) ? 1 : 0); return JIM_OK; } #endif #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) #define SOCKOPT_BOOL 0 #define SOCKOPT_INT 1 #define SOCKOPT_TIMEVAL 2 /* not currently supported */ static const struct sockopt_def { const char *name; int level; int opt; int type; /* SOCKOPT_xxx */ } sockopts[] = { #ifdef SOL_SOCKET #ifdef SO_BROADCAST { "broadcast", SOL_SOCKET, SO_BROADCAST }, #endif #ifdef SO_DEBUG { "debug", SOL_SOCKET, SO_DEBUG }, #endif #ifdef SO_KEEPALIVE { "keepalive", SOL_SOCKET, SO_KEEPALIVE }, #endif #ifdef SO_NOSIGPIPE { "nosigpipe", SOL_SOCKET, SO_NOSIGPIPE }, #endif #ifdef SO_OOBINLINE { "oobinline", SOL_SOCKET, SO_OOBINLINE }, #endif #ifdef SO_SNDBUF { "sndbuf", SOL_SOCKET, SO_SNDBUF, SOCKOPT_INT }, #endif #ifdef SO_RCVBUF { "rcvbuf", SOL_SOCKET, SO_RCVBUF, SOCKOPT_INT }, #endif #if 0 && defined(SO_SNDTIMEO) { "sndtimeo", SOL_SOCKET, SO_SNDTIMEO, SOCKOPT_TIMEVAL }, #endif #if 0 && defined(SO_RCVTIMEO) { "rcvtimeo", SOL_SOCKET, SO_RCVTIMEO, SOCKOPT_TIMEVAL }, #endif #endif #ifdef IPPROTO_TCP #ifdef TCP_NODELAY { "tcp_nodelay", IPPROTO_TCP, TCP_NODELAY }, #endif #endif }; static int aio_cmd_sockopt(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); size_t i; if (argc == 0) { Jim_Obj *dictObjPtr = Jim_NewListObj(interp, NULL, 0); for (i = 0; i < sizeof(sockopts) / sizeof(*sockopts); i++) { int value = 0; socklen_t len = sizeof(value); if (getsockopt(af->fd, sockopts[i].level, sockopts[i].opt, (void *)&value, &len) == 0) { if (sockopts[i].type == SOCKOPT_BOOL) { value = !!value; } Jim_ListAppendElement(interp, dictObjPtr, Jim_NewStringObj(interp, sockopts[i].name, -1)); Jim_ListAppendElement(interp, dictObjPtr, Jim_NewIntObj(interp, value)); } } Jim_SetResult(interp, dictObjPtr); return JIM_OK; } if (argc == 1) { return -1; } /* Set an option */ for (i = 0; i < sizeof(sockopts) / sizeof(*sockopts); i++) { if (strcmp(Jim_String(argv[0]), sockopts[i].name) == 0) { int on; if (sockopts[i].type == SOCKOPT_BOOL) { if (Jim_GetBoolean(interp, argv[1], &on) != JIM_OK) { return JIM_ERR; } } else { long longval; if (Jim_GetLong(interp, argv[1], &longval) != JIM_OK) { return JIM_ERR; } on = longval; } if (setsockopt(af->fd, sockopts[i].level, sockopts[i].opt, (void *)&on, sizeof(on)) < 0) { Jim_SetResultFormatted(interp, "Failed to set %#s: %s", argv[0], strerror(errno)); return JIM_ERR; } return JIM_OK; } } /* Not found */ Jim_SetResultFormatted(interp, "Unknown sockopt %#s", argv[0]); return JIM_ERR; } #endif /* JIM_BOOTSTRAP */ #ifdef HAVE_FSYNC static int aio_cmd_sync(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); fflush(af->fp); fsync(af->fd); return JIM_OK; } #endif static int aio_cmd_buffering(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); static const char * const options[] = { "none", "line", "full", NULL }; enum { OPT_NONE, OPT_LINE, OPT_FULL, }; int option; if (Jim_GetEnum(interp, argv[0], options, &option, NULL, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_NONE: setvbuf(af->fp, NULL, _IONBF, 0); break; case OPT_LINE: setvbuf(af->fp, NULL, _IOLBF, BUFSIZ); break; case OPT_FULL: setvbuf(af->fp, NULL, _IOFBF, BUFSIZ); break; } return JIM_OK; } #ifdef jim_ext_eventloop static int aio_eventinfo(Jim_Interp *interp, AioFile * af, unsigned mask, int argc, Jim_Obj * const *argv) { if (argc == 0) { /* Return current script */ Jim_Obj *objPtr = Jim_FindFileHandler(interp, af->fd, mask); if (objPtr) { Jim_SetResult(interp, objPtr); } return JIM_OK; } /* Delete old handler */ Jim_DeleteFileHandler(interp, af->fd, mask); /* Now possibly add the new script(s) */ if (Jim_Length(argv[0])) { Jim_CreateScriptFileHandler(interp, af->fd, mask, argv[0]); } return JIM_OK; } static int aio_cmd_readable(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); return aio_eventinfo(interp, af, JIM_EVENT_READABLE, argc, argv); } static int aio_cmd_writable(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); return aio_eventinfo(interp, af, JIM_EVENT_WRITABLE, argc, argv); } static int aio_cmd_onexception(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); return aio_eventinfo(interp, af, JIM_EVENT_EXCEPTION, argc, argv); } #endif #if defined(JIM_SSL) && !defined(JIM_BOOTSTRAP) static int aio_cmd_ssl(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); SSL *ssl; SSL_CTX *ssl_ctx; int server = 0; const char *sni = NULL; if (argc > 2) { static const char * const options[] = { "-server", "-sni", NULL }; enum { OPT_SERVER, OPT_SNI }; int option; if (Jim_GetEnum(interp, argv[2], options, &option, NULL, JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } switch (option) { case OPT_SERVER: if (argc != 4 && argc != 5) { return JIM_ERR; } server = 1; break; case OPT_SNI: if (argc != 4) { return JIM_ERR; } sni = Jim_String(argv[3]); break; } } if (af->ssl) { Jim_SetResultFormatted(interp, "%#s: stream is already ssl", argv[0]); return JIM_ERR; } ssl_ctx = JimAioSslCtx(interp); if (ssl_ctx == NULL) { return JIM_ERR; } ssl = SSL_new(ssl_ctx); if (ssl == NULL) { goto out; } SSL_set_cipher_list(ssl, "ALL"); if (SSL_set_fd(ssl, fileno(af->fp)) == 0) { goto out; } if (server) { const char *certfile = Jim_String(argv[3]); const char *keyfile = (argc == 4) ? certfile : Jim_String(argv[4]); if (SSL_use_certificate_file(ssl, certfile, SSL_FILETYPE_PEM) != 1) { goto out; } if (SSL_use_PrivateKey_file(ssl, keyfile, SSL_FILETYPE_PEM) != 1) { goto out; } if (SSL_accept(ssl) != 1) { goto out; } } else { if (sni) { /* Set server name indication if requested */ SSL_set_tlsext_host_name(ssl, sni); } if (SSL_connect(ssl) != 1) { goto out; } } af->ssl = ssl; af->fops = &ssl_fops; /* Set the command name as the result */ Jim_SetResult(interp, argv[0]); return JIM_OK; out: if (ssl) { SSL_free(ssl); } Jim_SetResultString(interp, ERR_error_string(ERR_get_error(), NULL), -1); return JIM_ERR; } static int aio_cmd_verify(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); int ret; if (!af->fops->verify) { return JIM_OK; } ret = af->fops->verify(af); if (ret != JIM_OK) { if (JimCheckStreamError(interp, af) == JIM_OK) { Jim_SetResultString(interp, "failed to verify the connection authenticity", -1); } } return ret; } #endif /* JIM_BOOTSTRAP */ #if defined(HAVE_STRUCT_FLOCK) && !defined(JIM_BOOTSTRAP) static int aio_cmd_lock(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); struct flock fl; int lockmode = F_SETLK; if (argc == 1) { if (!Jim_CompareStringImmediate(interp, argv[0], "-wait")) { return -1; } lockmode = F_SETLKW; } fl.l_start = 0; fl.l_len = 0; fl.l_type = F_WRLCK; fl.l_whence = SEEK_SET; switch (fcntl(af->fd, lockmode, &fl)) { case 0: Jim_SetResultInt(interp, 1); break; case -1: if (errno == EACCES || errno == EAGAIN) Jim_SetResultInt(interp, 0); else { Jim_SetResultFormatted(interp, "lock failed: %s", strerror(errno)); return JIM_ERR; } break; default: Jim_SetResultInt(interp, 0); break; } return JIM_OK; } static int aio_cmd_unlock(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); struct flock fl; fl.l_start = 0; fl.l_len = 0; fl.l_type = F_UNLCK; fl.l_whence = SEEK_SET; Jim_SetResultInt(interp, fcntl(af->fd, F_SETLK, &fl) == 0); return JIM_OK; } #endif /* JIM_BOOTSTRAP */ #if defined(HAVE_TERMIOS_H) && !defined(JIM_BOOTSTRAP) static int aio_cmd_tty(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { AioFile *af = Jim_CmdPrivData(interp); Jim_Obj *dictObjPtr; int ret; if (argc == 0) { /* get the current settings as a dictionary */ dictObjPtr = Jim_GetTtySettings(interp, af->fd); if (dictObjPtr == NULL) { JimAioSetError(interp, NULL); return JIM_ERR; } Jim_SetResult(interp, dictObjPtr); return JIM_OK; } if (argc > 1) { /* Convert name value arguments to a dictionary */ dictObjPtr = Jim_NewListObj(interp, argv, argc); } else { /* The settings are already given as a list */ dictObjPtr = argv[0]; } Jim_IncrRefCount(dictObjPtr); if (Jim_ListLength(interp, dictObjPtr) % 2) { /* Must be a valid dictionary */ Jim_DecrRefCount(interp, dictObjPtr); return -1; } ret = Jim_SetTtySettings(interp, af->fd, dictObjPtr); if (ret < 0) { JimAioSetError(interp, NULL); ret = JIM_ERR; } Jim_DecrRefCount(interp, dictObjPtr); return ret; } #endif /* JIM_BOOTSTRAP */ static const jim_subcmd_type aio_command_table[] = { { "read", "?-nonewline|-pending|len?", aio_cmd_read, 0, 2, /* Description: Read and return bytes from the stream. To eof if no len. */ }, { "copyto", "handle ?size?", aio_cmd_copy, 1, 2, /* Description: Copy up to 'size' bytes to the given filehandle, or to eof if no size. */ }, { "getfd", NULL, aio_cmd_getfd, 0, 0, /* Description: Internal command to return the underlying file descriptor. */ }, { "gets", "?var?", aio_cmd_gets, 0, 1, /* Description: Read one line and return it or store it in the var */ }, { "puts", "?-nonewline? str", aio_cmd_puts, 1, 2, /* Description: Write the string, with newline unless -nonewline */ }, { "isatty", NULL, aio_cmd_isatty, 0, 0, /* Description: Is the file descriptor a tty? */ }, #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) { "recvfrom", "len ?addrvar?", aio_cmd_recvfrom, 1, 2, /* Description: Receive up to 'len' bytes on the socket. Sets 'addrvar' with receive address, if set */ }, { "sendto", "str address", aio_cmd_sendto, 2, 2, /* Description: Send 'str' to the given address (dgram only) */ }, { "accept", "?addrvar?", aio_cmd_accept, 0, 1, /* Description: Server socket only: Accept a connection and return stream */ }, { "listen", "backlog", aio_cmd_listen, 1, 1, /* Description: Set the listen backlog for server socket */ }, { "sockopt", "?opt 0|1?", aio_cmd_sockopt, 0, 2, /* Description: Return a dictionary of sockopts, or set the value of a sockopt */ }, { "sockname", NULL, aio_cmd_sockname, 0, 0, /* Description: Returns the local address of the socket, if any */ }, { "peername", NULL, aio_cmd_peername, 0, 0, /* Description: Returns the remote address of the socket, if any */ }, #endif /* JIM_BOOTSTRAP */ { "flush", NULL, aio_cmd_flush, 0, 0, /* Description: Flush the stream */ }, { "eof", NULL, aio_cmd_eof, 0, 0, /* Description: Returns 1 if stream is at eof */ }, { "close", "?r(ead)|w(rite)?", aio_cmd_close, 0, 1, JIM_MODFLAG_FULLARGV, /* Description: Closes the stream. */ }, { "seek", "offset ?start|current|end", aio_cmd_seek, 1, 2, /* Description: Seeks in the stream (default 'current') */ }, { "tell", NULL, aio_cmd_tell, 0, 0, /* Description: Returns the current seek position */ }, { "filename", NULL, aio_cmd_filename, 0, 0, /* Description: Returns the original filename */ }, #ifdef O_NDELAY { "ndelay", "?0|1?", aio_cmd_ndelay, 0, 1, /* Description: Set O_NDELAY (if arg). Returns current/new setting. */ }, #endif #ifdef HAVE_FSYNC { "sync", NULL, aio_cmd_sync, 0, 0, /* Description: Flush and fsync() the stream */ }, #endif { "buffering", "none|line|full", aio_cmd_buffering, 1, 1, /* Description: Sets buffering */ }, #ifdef jim_ext_eventloop { "readable", "?readable-script?", aio_cmd_readable, 0, 1, /* Description: Returns script, or invoke readable-script when readable, {} to remove */ }, { "writable", "?writable-script?", aio_cmd_writable, 0, 1, /* Description: Returns script, or invoke writable-script when writable, {} to remove */ }, { "onexception", "?exception-script?", aio_cmd_onexception, 0, 1, /* Description: Returns script, or invoke exception-script when oob data, {} to remove */ }, #endif #if !defined(JIM_BOOTSTRAP) #if defined(JIM_SSL) { "ssl", "?-server cert ?priv?|-sni servername?", aio_cmd_ssl, 0, 3, JIM_MODFLAG_FULLARGV /* Description: Wraps a stream socket with SSL/TLS and returns a new channel */ }, { "verify", NULL, aio_cmd_verify, 0, 0, /* Description: Verifies the certificate of a SSL/TLS channel */ }, #endif #if defined(HAVE_STRUCT_FLOCK) { "lock", "?-wait?", aio_cmd_lock, 0, 1, /* Description: Attempt to get a lock, possibly waiting */ }, { "unlock", NULL, aio_cmd_unlock, 0, 0, /* Description: Relase a lock. */ }, #endif #if defined(HAVE_TERMIOS_H) { "tty", "?baud rate? ?data bits? ?stop bits? ?parity even|odd|none? ?handshake xonxoff|rtscts|none? ?input raw|cooked? ?output raw|cooked? ?echo 0|1? ?vmin n? ?vtime n?", aio_cmd_tty, 0, -1, /* Description: Get or set tty settings - valid only on a tty */ }, #endif #endif /* JIM_BOOTSTRAP */ { NULL } }; static int JimAioSubCmdProc(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { return Jim_CallSubCmd(interp, Jim_ParseSubCmd(interp, aio_command_table, argc, argv), argc, argv); } static int JimAioOpenCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *mode; FILE *fh = NULL; const char *filename; int fd = -1; if (argc != 2 && argc != 3) { Jim_WrongNumArgs(interp, 1, argv, "filename ?mode?"); return JIM_ERR; } filename = Jim_String(argv[1]); mode = (argc == 3) ? Jim_String(argv[2]) : "r"; #ifdef jim_ext_tclcompat { /* If the filename starts with '|', use popen instead */ if (*filename == '|') { Jim_Obj *evalObj[3]; evalObj[0] = Jim_NewStringObj(interp, "::popen", -1); evalObj[1] = Jim_NewStringObj(interp, filename + 1, -1); evalObj[2] = Jim_NewStringObj(interp, mode, -1); return Jim_EvalObjVector(interp, 3, evalObj); } } #endif #ifndef JIM_ANSIC if (*mode == 'R' || *mode == 'W') { /* POSIX flags */ #ifndef O_NOCTTY /* mingw doesn't support this flag */ #define O_NOCTTY 0 #endif static const char * const modetypes[] = { "RDONLY", "WRONLY", "RDWR", "APPEND", "BINARY", "CREAT", "EXCL", "NOCTTY", "TRUNC", NULL }; static const char * const simplemodes[] = { "r", "w", "w+" }; static const int modeflags[] = { O_RDONLY, O_WRONLY, O_RDWR, O_APPEND, 0, O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, }; int posixflags = 0; int len = Jim_ListLength(interp, argv[2]); int i; int opt; mode = NULL; for (i = 0; i < len; i++) { Jim_Obj *objPtr = Jim_ListGetIndex(interp, argv[2], i); if (Jim_GetEnum(interp, objPtr, modetypes, &opt, "access mode", JIM_ERRMSG) != JIM_OK) { return JIM_ERR; } if (opt < 3) { mode = simplemodes[opt]; } posixflags |= modeflags[opt]; } /* mode must be set here if it started with 'R' or 'W' and passed the enum check above */ assert(mode); fd = open(filename, posixflags, 0666); if (fd >= 0) { fh = fdopen(fd, mode); if (fh == NULL) { close(fd); } } } else #endif { fh = fopen(filename, mode); } if (fh == NULL) { JimAioSetError(interp, argv[1]); return JIM_ERR; } return JimMakeChannel(interp, fh, fd, argv[1], "aio.handle%ld", 0, mode, 0) ? JIM_OK : JIM_ERR; } #if defined(JIM_SSL) && !defined(JIM_BOOTSTRAP) static void JimAioSslContextDelProc(struct Jim_Interp *interp, void *privData) { SSL_CTX_free((SSL_CTX *)privData); ERR_free_strings(); } #ifdef USE_TLSv1_2_method #define TLS_method TLSv1_2_method #endif static SSL_CTX *JimAioSslCtx(Jim_Interp *interp) { SSL_CTX *ssl_ctx = (SSL_CTX *)Jim_GetAssocData(interp, "ssl_ctx"); if (ssl_ctx == NULL) { SSL_load_error_strings(); SSL_library_init(); ssl_ctx = SSL_CTX_new(TLS_method()); if (ssl_ctx && SSL_CTX_set_default_verify_paths(ssl_ctx)) { SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_NONE, NULL); Jim_SetAssocData(interp, "ssl_ctx", JimAioSslContextDelProc, ssl_ctx); } else { Jim_SetResultString(interp, ERR_error_string(ERR_get_error(), NULL), -1); } } return ssl_ctx; } #endif /* JIM_BOOTSTRAP */ /** * Creates a channel for fh/fd/filename. * * If fh is not NULL, uses that as the channel (and sets AIO_KEEPOPEN). * Otherwise fd must be >= 0, in which case it uses that as the channel. * * hdlfmt is a sprintf format for the filehandle. Anything with %ld at the end will do. * mode is used for open or fdopen. * * Creates the command and sets the name as the current result. * Returns the AioFile pointer on sucess or NULL on failure (only if fdopen fails). */ static AioFile *JimMakeChannel(Jim_Interp *interp, FILE *fh, int fd, Jim_Obj *filename, const char *hdlfmt, int family, const char *mode, int flags) { AioFile *af; char buf[AIO_CMD_LEN]; Jim_Obj *cmdname; if (fh == NULL) { assert(fd >= 0); #ifndef JIM_ANSIC fh = fdopen(fd, mode); if (fh == NULL) { JimAioSetError(interp, filename); close(fd); return NULL; } #endif } snprintf(buf, sizeof(buf), hdlfmt, Jim_GetId(interp)); cmdname = Jim_NewStringObj(interp, buf, -1); if (!filename) { filename = cmdname; } Jim_IncrRefCount(filename); /* Create the file command */ af = Jim_Alloc(sizeof(*af)); memset(af, 0, sizeof(*af)); af->fp = fh; af->filename = filename; af->flags = flags; #ifndef JIM_ANSIC af->fd = fileno(fh); #ifdef FD_CLOEXEC if ((flags & AIO_KEEPOPEN) == 0) { (void)fcntl(af->fd, F_SETFD, FD_CLOEXEC); } #endif #endif af->addr_family = family; af->fops = &stdio_fops; af->ssl = NULL; Jim_CreateCommand(interp, buf, JimAioSubCmdProc, af, JimAioDelProc); /* Note that the command must use the global namespace, even if * the current namespace is something different */ Jim_SetResult(interp, Jim_MakeGlobalNamespaceName(interp, cmdname)); return af; } #if defined(HAVE_PIPE) || (defined(HAVE_SOCKETPAIR) && UNIX_SOCKETS) || defined(HAVE_OPENPTY) /** * Create a pair of channels. e.g. from pipe() or socketpair() */ static int JimMakeChannelPair(Jim_Interp *interp, int p[2], Jim_Obj *filename, const char *hdlfmt, int family, const char * const mode[2]) { if (JimMakeChannel(interp, NULL, p[0], filename, hdlfmt, family, mode[0], 0)) { Jim_Obj *objPtr = Jim_NewListObj(interp, NULL, 0); Jim_ListAppendElement(interp, objPtr, Jim_GetResult(interp)); if (JimMakeChannel(interp, NULL, p[1], filename, hdlfmt, family, mode[1], 0)) { Jim_ListAppendElement(interp, objPtr, Jim_GetResult(interp)); Jim_SetResult(interp, objPtr); return JIM_OK; } } /* Can only be here if fdopen() failed */ close(p[0]); close(p[1]); JimAioSetError(interp, NULL); return JIM_ERR; } #endif #ifdef HAVE_PIPE static int JimAioPipeCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int p[2]; static const char * const mode[2] = { "r", "w" }; if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, ""); return JIM_ERR; } if (pipe(p) != 0) { JimAioSetError(interp, NULL); return JIM_ERR; } return JimMakeChannelPair(interp, p, argv[0], "aio.pipe%ld", 0, mode); } #endif #ifdef HAVE_OPENPTY static int JimAioOpenPtyCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { int p[2]; static const char * const mode[2] = { "r+", "w+" }; if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, ""); return JIM_ERR; } if (openpty(&p[0], &p[1], NULL, NULL, NULL) != 0) { JimAioSetError(interp, NULL); return JIM_ERR; } return JimMakeChannelPair(interp, p, argv[0], "aio.pty%ld", 0, mode); } #endif #if defined(HAVE_SOCKETS) && !defined(JIM_BOOTSTRAP) static int JimAioSockCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { const char *socktypes[] = { "unix", "unix.server", "unix.dgram", "unix.dgram.server", "dgram", "dgram.server", "stream", "stream.server", "pipe", "pair", "pty", NULL }; enum { SOCK_UNIX, SOCK_UNIX_SERVER, SOCK_UNIX_DGRAM, SOCK_UNIX_DGRAM_SERVER, SOCK_DGRAM_CLIENT, SOCK_DGRAM_SERVER, SOCK_STREAM_CLIENT, SOCK_STREAM_SERVER, SOCK_STREAM_PIPE, SOCK_STREAM_SOCKETPAIR, SOCK_STREAM_PTY, }; int socktype; int sock; const char *addr = NULL; const char *bind_addr = NULL; const char *connect_addr = NULL; union sockaddr_any sa; socklen_t salen; int on = 1; int reuse = 0; int do_listen = 0; int family = PF_INET; int type = SOCK_STREAM; Jim_Obj *argv0 = argv[0]; int ipv6 = 0; if (argc > 1 && Jim_CompareStringImmediate(interp, argv[1], "-ipv6")) { if (!IPV6) { Jim_SetResultString(interp, "ipv6 not supported", -1); return JIM_ERR; } ipv6 = 1; family = PF_INET6; } argc -= ipv6; argv += ipv6; if (argc < 2) { wrongargs: Jim_WrongNumArgs(interp, 1, &argv0, "?-ipv6? type ?address?"); return JIM_ERR; } if (Jim_GetEnum(interp, argv[1], socktypes, &socktype, "socket type", JIM_ERRMSG) != JIM_OK) return Jim_CheckShowCommands(interp, argv[1], socktypes); Jim_SetEmptyResult(interp); if (argc > 2) { addr = Jim_String(argv[2]); } #if defined(HAVE_SOCKETPAIR) && UNIX_SOCKETS if (socktype == SOCK_STREAM_SOCKETPAIR) { int p[2]; static const char * const mode[2] = { "r+", "r+" }; if (addr || ipv6) { goto wrongargs; } if (socketpair(PF_UNIX, SOCK_STREAM, 0, p) < 0) { JimAioSetError(interp, NULL); return JIM_ERR; } return JimMakeChannelPair(interp, p, argv[1], "aio.sockpair%ld", PF_UNIX, mode); } #endif #if defined(HAVE_PIPE) if (socktype == SOCK_STREAM_PIPE) { if (addr || ipv6) { goto wrongargs; } return JimAioPipeCommand(interp, 1, &argv[1]); } #endif /* Now all these socket types are very similar */ switch (socktype) { case SOCK_DGRAM_CLIENT: connect_addr = addr; type = SOCK_DGRAM; break; case SOCK_STREAM_CLIENT: if (addr == NULL) { goto wrongargs; } connect_addr = addr; break; case SOCK_STREAM_SERVER: if (addr == NULL) { goto wrongargs; } bind_addr = addr; reuse = 1; do_listen = 1; break; case SOCK_DGRAM_SERVER: if (addr == NULL) { goto wrongargs; } bind_addr = addr; type = SOCK_DGRAM; reuse = 1; break; #if UNIX_SOCKETS case SOCK_UNIX: if (addr == NULL) { goto wrongargs; } connect_addr = addr; family = PF_UNIX; break; case SOCK_UNIX_DGRAM: connect_addr = addr; type = SOCK_DGRAM; family = PF_UNIX; /* A dgram unix domain socket client needs to bind * to a temporary address to allow the server to * send responses */ { int tmpfd = Jim_MakeTempFile(interp, NULL, 1); if (tmpfd < 0) { return JIM_ERR; } close(tmpfd); /* This will be valid until a result is next set, which is long enough here */ bind_addr = Jim_String(Jim_GetResult(interp)); } break; case SOCK_UNIX_SERVER: if (addr == NULL) { goto wrongargs; } bind_addr = addr; family = PF_UNIX; do_listen = 1; break; case SOCK_UNIX_DGRAM_SERVER: if (addr == NULL) { goto wrongargs; } bind_addr = addr; type = SOCK_DGRAM; family = PF_UNIX; break; #endif #ifdef HAVE_OPENPTY case SOCK_STREAM_PTY: if (addr || ipv6) { goto wrongargs; } return JimAioOpenPtyCommand(interp, 1, &argv[1]); #endif default: Jim_SetResultString(interp, "Unsupported socket type", -1); return JIM_ERR; } /* Now do all the steps necessary for the given socket type */ sock = socket(family, type, 0); if (sock < 0) { JimAioSetError(interp, NULL); return JIM_ERR; } if (bind_addr) { if (JimParseSocketAddress(interp, family, type, bind_addr, &sa, &salen) != JIM_OK) { close(sock); return JIM_ERR; } if (reuse) { setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)); } if (bind(sock, &sa.sa, salen)) { Jim_SetResultFormatted(interp, "%s: bind: %s", bind_addr, strerror(errno)); close(sock); return JIM_ERR; } } if (connect_addr) { if (JimParseSocketAddress(interp, family, type, connect_addr, &sa, &salen) != JIM_OK) { close(sock); return JIM_ERR; } if (connect(sock, &sa.sa, salen)) { Jim_SetResultFormatted(interp, "%s: connect: %s", connect_addr, strerror(errno)); close(sock); return JIM_ERR; } } if (do_listen) { if (listen(sock, 5)) { Jim_SetResultFormatted(interp, "listen: %s", strerror(errno)); close(sock); return JIM_ERR; } } return JimMakeChannel(interp, NULL, sock, argv[1], "aio.sock%ld", family, "r+", 0) ? JIM_OK : JIM_ERR; } #endif /* JIM_BOOTSTRAP */ #if defined(JIM_SSL) && !defined(JIM_BOOTSTRAP) static int JimAioLoadSSLCertsCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { SSL_CTX *ssl_ctx; if (argc != 2) { Jim_WrongNumArgs(interp, 1, argv, "dir"); return JIM_ERR; } ssl_ctx = JimAioSslCtx(interp); if (!ssl_ctx) { return JIM_ERR; } if (SSL_CTX_load_verify_locations(ssl_ctx, NULL, Jim_String(argv[1])) == 1) { return JIM_OK; } Jim_SetResultString(interp, ERR_error_string(ERR_get_error(), NULL), -1); return JIM_ERR; } #endif /* JIM_BOOTSTRAP */ int Jim_aioInit(Jim_Interp *interp) { if (Jim_PackageProvide(interp, "aio", "1.0", JIM_ERRMSG)) return JIM_ERR; #if defined(JIM_SSL) Jim_CreateCommand(interp, "load_ssl_certs", JimAioLoadSSLCertsCommand, NULL, NULL); #endif Jim_CreateCommand(interp, "open", JimAioOpenCommand, NULL, NULL); #ifdef HAVE_SOCKETS Jim_CreateCommand(interp, "socket", JimAioSockCommand, NULL, NULL); #endif #ifdef HAVE_PIPE Jim_CreateCommand(interp, "pipe", JimAioPipeCommand, NULL, NULL); #endif /* Create filehandles for stdin, stdout and stderr */ JimMakeChannel(interp, stdin, -1, NULL, "stdin", 0, "r", AIO_KEEPOPEN); JimMakeChannel(interp, stdout, -1, NULL, "stdout", 0, "w", AIO_KEEPOPEN); JimMakeChannel(interp, stderr, -1, NULL, "stderr", 0, "w", AIO_KEEPOPEN); return JIM_OK; }