Example #1
0
static void
parse_new(struct vcc *tl)
{
	struct symbol *sy1, *sy2, *sy3;
	struct inifin *ifp;
	const char *p, *s_obj, *s_init, *s_struct, *s_fini;
	char buf1[128];
	char buf2[128];

	vcc_NextToken(tl);
	ExpectErr(tl, ID);
	if (!vcc_isCid(tl->t)) {
		VSB_printf(tl->sb,
		    "Names of VCL objects cannot contain '-'\n");
		vcc_ErrWhere(tl, tl->t);
		return;
	}
	sy1 = VCC_FindSymbol(tl, tl->t, SYM_NONE);
	XXXAZ(sy1);

	sy1 = VCC_AddSymbolTok(tl, tl->t, SYM_NONE);	// XXX: NONE ?
	XXXAN(sy1);
	vcc_NextToken(tl);

	ExpectErr(tl, '=');
	vcc_NextToken(tl);

	ExpectErr(tl, ID);
	sy2 = VCC_FindSymbol(tl, tl->t, SYM_OBJECT);
	if (sy2 == NULL) {
		VSB_printf(tl->sb, "Object not found: ");
		vcc_ErrToken(tl, tl->t);
		VSB_printf(tl->sb, " at ");
		vcc_ErrWhere(tl, tl->t);
		return;
	}
	XXXAN(sy2);

	/*lint -save -e448 */
	/* Split the first three args */
	p = sy2->args;
	s_obj = p;
	p += strlen(p) + 1;
	s_init = p;
	while (p[0] != '\0' || p[1] != '\0')
		p++;
	p += 2;
	s_struct = p;
	p += strlen(p) + 1;
	s_fini = p + strlen(p) + 1;
	while (p[0] != '\0' || p[1] != '\0')
		p++;
	p += 2;

	Fh(tl, 0, "static %s *%s;\n\n", s_struct, sy1->name);

	vcc_NextToken(tl);

	bprintf(buf1, ", &%s, \"%s\"", sy1->name, sy1->name);
	vcc_Eval_Func(tl, s_init, buf1, "ASDF", s_init + strlen(s_init) + 1);
	ifp = New_IniFin(tl);
	VSB_printf(ifp->fin, "\t%s(&%s);", s_fini, sy1->name);
	ExpectErr(tl, ';');

	bprintf(buf1, ", %s", sy1->name);
	/* Split the methods from the args */
	while (*p != '\0') {
		p += strlen(s_obj);
		bprintf(buf2, "%s%s", sy1->name, p);
		sy3 = VCC_AddSymbolStr(tl, buf2, SYM_FUNC);
		AN(sy3);
		sy3->eval = vcc_Eval_SymFunc;
		p += strlen(p) + 1;
		sy3->cfunc = p;
		p += strlen(p) + 1;

		/* Functions which return VOID are procedures */
		if (!memcmp(p, "VOID\0", 5))
			sy3->kind = SYM_PROC;

		sy3->args = p;
		sy3->extra = TlDup(tl, buf1);
		while (p[0] != '\0' || p[1] != '\0') {
			if (!memcmp(p, "ENUM\0", 5)) {
				/* XXX: Special case for ENUM that has
				   it's own \0\0 end marker. Not exactly
				   elegant, we should consider
				   alternatives here. Maybe runlength
				   encode the entire block? */
				p += strlen(p) + 1;
				while (p[0] != '\0' || p[1] != '\0')
					p++;
			}
			p++;
		}
		p += 2;
	}
	/*lint -restore */
}
Example #2
0
static void
parse_return(struct vcc *tl)
{
	int retval = 0;

	vcc_NextToken(tl);
	ExpectErr(tl, '(');
	vcc_NextToken(tl);
	ExpectErr(tl, ID);

	/* 'error' gets special handling, to allow optional status/response */
	if (vcc_IdIs(tl->t, "error")) {
		vcc_NextToken(tl);
		if (tl->t->tok == ')') {
			VSB_printf(tl->sb,
			    "Syntax has changed, use:\n"
			    "\treturn(error(999));\n"
			    "or\n"
			    "\treturn(error(999, \"Response text\"));\n");
			vcc_ErrWhere(tl, tl->t);
			return;
		}
		ExpectErr(tl, '(');
		vcc_NextToken(tl);
		Fb(tl, 1, "VRT_error(ctx,\n");
		tl->indent += INDENT;
		vcc_Expr(tl, INT);
		ERRCHK(tl);
		Fb(tl, 1, ",\n");
		if (tl->t->tok == ',') {
			vcc_NextToken(tl);
			vcc_Expr(tl, STRING);
			ERRCHK(tl);
		} else {
			Fb(tl, 1, "(const char*)0\n");
		}
		tl->indent -= INDENT;
		ExpectErr(tl, ')');
		vcc_NextToken(tl);
		Fb(tl, 1, ");\n");
		Fb(tl, 1, "VRT_handling(ctx, VCL_RET_ERROR);\n");
		Fb(tl, 1, "return (1);\n");
		vcc_ProcAction(tl->curproc, VCL_RET_ERROR, tl->t);
		ExpectErr(tl, ')');
		vcc_NextToken(tl);
		return;
	}

#define VCL_RET_MAC(l, U, B)						\
	do {								\
		if (vcc_IdIs(tl->t, #l)) {				\
			Fb(tl, 1, "VRT_handling(ctx, VCL_RET_" #U ");\n"); \
			Fb(tl, 1, "return (1);\n");			\
			vcc_ProcAction(tl->curproc, VCL_RET_##U, tl->t);\
			retval = 1;					\
		}							\
	} while (0);
#include "tbl/vcl_returns.h"
#undef VCL_RET_MAC
	if (!retval) {
		VSB_printf(tl->sb, "Expected return action name.\n");
		vcc_ErrWhere(tl, tl->t);
		ERRCHK(tl);
	}
	vcc_NextToken(tl);
	ExpectErr(tl, ')');
	vcc_NextToken(tl);
}
Example #3
0
static void
vcc_ParseProbeSpec(struct vcc *tl, const struct symbol *sym, char **name)
{
	struct fld_spec *fs;
	struct token *t_field;
	struct token *t_did = NULL, *t_window = NULL, *t_threshold = NULL;
	struct token *t_initial = NULL;
	struct vsb *vsb;
	char *retval;
	unsigned window, threshold, initial, status;
	double t;

	fs = vcc_FldSpec(tl,
	    "?url",
	    "?request",
	    "?expected_response",
	    "?timeout",
	    "?interval",
	    "?window",
	    "?threshold",
	    "?initial",
	    NULL);

	SkipToken(tl, '{');

	vsb = VSB_new_auto();
	AN(vsb);
	if (sym != NULL)
		VSB_cat(vsb, sym->rname);
	else
		VSB_printf(vsb, "vgc_probe__%d", tl->nprobe++);
	AZ(VSB_finish(vsb));
	retval = TlDup(tl, VSB_data(vsb));
	AN(retval);
	VSB_destroy(&vsb);
	if (name != NULL)
		*name = retval;

	window = 0;
	threshold = 0;
	initial = 0;
	status = 0;
	Fh(tl, 0, "static const struct vrt_backend_probe %s[] = {{\n", retval);
	Fh(tl, 0, "\t.magic = VRT_BACKEND_PROBE_MAGIC,\n");
	while (tl->t->tok != '}') {

		vcc_IsField(tl, &t_field, fs);
		ERRCHK(tl);
		if (vcc_IdIs(t_field, "url")) {
			vcc_Redef(tl, "Probe request", &t_did, t_field);
			ERRCHK(tl);
			ExpectErr(tl, CSTR);
			Fh(tl, 0, "\t.url = ");
			EncToken(tl->fh, tl->t);
			Fh(tl, 0, ",\n");
			vcc_NextToken(tl);
		} else if (vcc_IdIs(t_field, "request")) {
			vcc_Redef(tl, "Probe request", &t_did, t_field);
			ERRCHK(tl);
			ExpectErr(tl, CSTR);
			Fh(tl, 0, "\t.request =\n");
			while (tl->t->tok == CSTR) {
				Fh(tl, 0, "\t\t");
				EncToken(tl->fh, tl->t);
				Fh(tl, 0, " \"\\r\\n\"\n");
				vcc_NextToken(tl);
			}
			Fh(tl, 0, "\t\t\"\\r\\n\",\n");
		} else if (vcc_IdIs(t_field, "timeout")) {
			Fh(tl, 0, "\t.timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fh(tl, 0, "%g,\n", t);
		} else if (vcc_IdIs(t_field, "interval")) {
			Fh(tl, 0, "\t.interval = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fh(tl, 0, "%g,\n", t);
		} else if (vcc_IdIs(t_field, "window")) {
			t_window = tl->t;
			window = vcc_UintVal(tl);
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "initial")) {
			t_initial = tl->t;
			initial = vcc_UintVal(tl);
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "expected_response")) {
			status = vcc_UintVal(tl);
			if (status < 100 || status > 999) {
				VSB_printf(tl->sb,
				    "Must specify .expected_response with "
				    "exactly three digits "
				    "(100 <= x <= 999)\n");
				vcc_ErrWhere(tl, tl->t);
				return;
			}
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "threshold")) {
			t_threshold = tl->t;
			threshold = vcc_UintVal(tl);
			ERRCHK(tl);
		} else {
			vcc_ErrToken(tl, t_field);
			vcc_ErrWhere(tl, t_field);
			ErrInternal(tl);
			return;
		}

		SkipToken(tl, ';');
	}

	if (t_threshold != NULL || t_window != NULL) {
		if (t_threshold == NULL && t_window != NULL) {
			VSB_printf(tl->sb,
			    "Must specify .threshold with .window\n");
			vcc_ErrWhere(tl, t_window);
			return;
		} else if (t_threshold != NULL && t_window == NULL) {
			if (threshold > 64) {
				VSB_printf(tl->sb,
				    "Threshold must be 64 or less.\n");
				vcc_ErrWhere(tl, t_threshold);
				return;
			}
			window = threshold + 1;
		} else if (window > 64) {
			AN(t_window);
			VSB_printf(tl->sb, "Window must be 64 or less.\n");
			vcc_ErrWhere(tl, t_window);
			return;
		}
		if (threshold > window ) {
			VSB_printf(tl->sb,
			    "Threshold can not be greater than window.\n");
			AN(t_threshold);
			vcc_ErrWhere(tl, t_threshold);
			AN(t_window);
			vcc_ErrWhere(tl, t_window);
		}
		Fh(tl, 0, "\t.window = %u,\n", window);
		Fh(tl, 0, "\t.threshold = %u,\n", threshold);
	}
	if (t_initial != NULL)
		Fh(tl, 0, "\t.initial = %u,\n", initial);
	else
		Fh(tl, 0, "\t.initial = ~0U,\n");
	if (status > 0)
		Fh(tl, 0, "\t.exp_status = %u,\n", status);
	Fh(tl, 0, "}};\n");
	SkipToken(tl, '}');
}
Example #4
0
static void
vcc_ParseHostDef(struct vcc *tl, const struct token *t_be, const char *vgcname)
{
	struct token *t_field;
	struct token *t_val;
	struct token *t_host = NULL;
	struct token *t_port = NULL;
	struct token *t_path = NULL;
	struct token *t_hosthdr = NULL;
	struct symbol *pb;
	struct token *t_did = NULL;
	struct fld_spec *fs;
	struct inifin *ifp;
	struct vsb *vsb;
	char *p;
	unsigned u;
	double t;

	fs = vcc_FldSpec(tl,
	    "?host",
	    "?port",
	    "?path",
	    "?host_header",
	    "?connect_timeout",
	    "?first_byte_timeout",
	    "?between_bytes_timeout",
	    "?probe",
	    "?max_connections",
	    "?proxy_header",
	    NULL);

	SkipToken(tl, '{');

	vsb = VSB_new_auto();
	AN(vsb);
	tl->fb = vsb;

	Fb(tl, 0, "\nstatic const struct vrt_backend vgc_dir_priv_%s = {\n",
	    vgcname);

	Fb(tl, 0, "\t.magic = VRT_BACKEND_MAGIC,\n");
	Fb(tl, 0, "\t.vcl_name = \"%.*s", PF(t_be));
	Fb(tl, 0, "\",\n");

	/* Check for old syntax */
	if (tl->t->tok == ID && vcc_IdIs(tl->t, "set")) {
		VSB_printf(tl->sb,
		    "NB: Backend Syntax has changed:\n"
		    "Remove \"set\" and \"backend\" in front"
		    " of backend fields.\n" );
		vcc_ErrToken(tl, tl->t);
		VSB_printf(tl->sb, " at ");
		vcc_ErrWhere(tl, tl->t);
		return;
	}

	while (tl->t->tok != '}') {

		vcc_IsField(tl, &t_field, fs);
		ERRCHK(tl);
		if (vcc_IdIs(t_field, "host")) {
			vcc_Redef(tl, "Address", &t_did, t_field);
			ERRCHK(tl);
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_host = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "port")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_port = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "path")) {
			if (tl->syntax < VCL_41) {
				VSB_printf(tl->sb,
				    "Unix socket backends only supported"
				    " in VCL4.1 and higher.\n");
				vcc_ErrToken(tl, tl->t);
				VSB_printf(tl->sb, " at ");
				vcc_ErrWhere(tl, tl->t);
				return;
			}
			vcc_Redef(tl, "Address", &t_did, t_field);
			ERRCHK(tl);
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_path = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "host_header")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_hosthdr = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "connect_timeout")) {
			Fb(tl, 0, "\t.connect_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "first_byte_timeout")) {
			Fb(tl, 0, "\t.first_byte_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "between_bytes_timeout")) {
			Fb(tl, 0, "\t.between_bytes_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "max_connections")) {
			u = vcc_UintVal(tl);
			ERRCHK(tl);
			SkipToken(tl, ';');
			Fb(tl, 0, "\t.max_connections = %u,\n", u);
		} else if (vcc_IdIs(t_field, "proxy_header")) {
			t_val = tl->t;
			u = vcc_UintVal(tl);
			ERRCHK(tl);
			if (u != 1 && u != 2) {
				VSB_printf(tl->sb,
				    ".proxy_header must be 1 or 2\n");
				vcc_ErrWhere(tl, t_val);
				return;
			}
			SkipToken(tl, ';');
			Fb(tl, 0, "\t.proxy_header = %u,\n", u);
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == '{') {
			vcc_ParseProbeSpec(tl, NULL, &p);
			Fb(tl, 0, "\t.probe = %s,\n", p);
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == ID) {
			if (vcc_IdIs(tl->t, "default")) {
				vcc_NextToken(tl);
				(void)vcc_default_probe(tl);
			} else {
				pb = VCC_SymbolGet(tl, SYM_PROBE,
				    "Probe not found", XREF_REF);
				ERRCHK(tl);
				AN(pb);
				Fb(tl, 0, "\t.probe = %s,\n", pb->rname);
			}
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "probe")) {
			VSB_printf(tl->sb,
			    "Expected '{' or name of probe, got ");
			vcc_ErrToken(tl, tl->t);
			VSB_printf(tl->sb, " at\n");
			vcc_ErrWhere(tl, tl->t);
			return;
		} else {
			ErrInternal(tl);
			return;
		}

	}

	vcc_FieldsOk(tl, fs);
	ERRCHK(tl);

	if (t_host == NULL && t_path == NULL) {
		VSB_printf(tl->sb, "Expected .host or .path.\n");
		vcc_ErrWhere(tl, t_be);
		return;
	}

	assert(t_host != NULL || t_path != NULL);
	if (t_host != NULL)
		/* Check that the hostname makes sense */
		Emit_Sockaddr(tl, t_host, t_port);
	else
		/* Check that the path can be a legal UDS */
		Emit_UDS_Path(tl, t_path, "Backend path");
	ERRCHK(tl);

	ExpectErr(tl, '}');

	/* We have parsed it all, emit the ident string */

	/* Emit the hosthdr field, fall back to .host if not specified */
	/* If .path is specified, set "0.0.0.0". */
	Fb(tl, 0, "\t.hosthdr = ");
	if (t_hosthdr != NULL)
		EncToken(tl->fb, t_hosthdr);
	else if (t_host != NULL)
		EncToken(tl->fb, t_host);
	else
		Fb(tl, 0, "\"0.0.0.0\"");
	Fb(tl, 0, ",\n");

	/* Close the struct */
	Fb(tl, 0, "};\n");

	vcc_NextToken(tl);

	tl->fb = NULL;
	AZ(VSB_finish(vsb));
	Fh(tl, 0, "%s", VSB_data(vsb));
	VSB_destroy(&vsb);

	ifp = New_IniFin(tl);
	VSB_printf(ifp->ini,
	    "\t%s =\n\t    VRT_new_backend_clustered(ctx, vsc_cluster,\n"
	    "\t\t&vgc_dir_priv_%s);",
	    vgcname, vgcname);
	VSB_printf(ifp->fin, "\t\tVRT_delete_backend(ctx, &%s);", vgcname);
}
Example #5
0
void
vcc_Parse(struct vcc *tl)
{
	struct toplev *tp;

	if (tl->t->tok != ID || !vcc_IdIs(tl->t, "vcl")) {
		VSB_printf(tl->sb,
		    "VCL version declaration missing\n"
		    "Update your VCL to Version 4 syntax, and add\n"
		    "\tvcl 4.0;\n"
		    "on the first line the VCL files.\n"
		);
		vcc_ErrWhere(tl, tl->t);
		ERRCHK(tl);
	}
	vcc_ParseVcl(tl);
	ERRCHK(tl);
	while (tl->t->tok != EOI) {
		ERRCHK(tl);
		switch (tl->t->tok) {
		case CSRC:
			if (tl->param->allow_inline_c) {
				Fc(tl, 0, "%.*s\n",
				    (int) (tl->t->e - (tl->t->b + 4)),
				    tl->t->b + 2);
				vcc_NextToken(tl);
			} else {
				VSB_printf(tl->sb,
				    "Inline-C not allowed\n");
				vcc_ErrWhere(tl, tl->t);
			}
			break;
		case EOI:
			break;
		case ID:
			for (tp = toplev; tp->name != NULL; tp++) {
				if (!vcc_IdIs(tl->t, tp->name))
					continue;
				tp->func(tl);
				break;
			}
			if (tp->name != NULL)
				break;
			/* FALLTHROUGH */
		default:
			/* We deliberately do not mention inline-C */
			VSB_printf(tl->sb, "Expected one of\n\t");
			for (tp = toplev; tp->name != NULL; tp++) {
				if (tp[1].name == NULL)
					VSB_printf(tl->sb, " or ");
				VSB_printf(tl->sb, "'%s'", tp->name);
				if (tp[1].name != NULL)
					VSB_printf(tl->sb, ", ");
			}
			VSB_printf(tl->sb, "\nFound: ");
			vcc_ErrToken(tl, tl->t);
			VSB_printf(tl->sb, " at\n");
			vcc_ErrWhere(tl, tl->t);
			return;
		}
	}
}
Example #6
0
static void
parse_new(struct vcc *tl)
{
	struct symbol *sy1, *sy2, *sy3;
	const char *p, *s_obj, *s_init, *s_struct, *s_fini;
	char buf1[128];
	char buf2[128];

	vcc_NextToken(tl);
	ExpectErr(tl, ID);
	sy1 = VCC_FindSymbol(tl, tl->t, SYM_NONE);
	XXXAZ(sy1);

	sy1 = VCC_AddSymbolTok(tl, tl->t, SYM_NONE);	// XXX: NONE ?
	XXXAN(sy1);
	vcc_NextToken(tl);

	ExpectErr(tl, '=');
	vcc_NextToken(tl);

	ExpectErr(tl, ID);
	sy2 = VCC_FindSymbol(tl, tl->t, SYM_OBJECT);
	XXXAN(sy2);

	/*lint -save -e448 */
	/* Split the first three args */
	p = sy2->args;
	s_obj = p;
	p += strlen(p) + 1;
	s_init = p;
	while (p[0] != '\0' || p[1] != '\0')
		p++;
	p += 2;
	s_struct = p;
	p += strlen(p) + 1;
	s_fini = p + strlen(p) + 1;
	while (p[0] != '\0' || p[1] != '\0')
		p++;
	p += 2;

	Fh(tl, 0, "static %s *%s;\n\n", s_struct, sy1->name);

	vcc_NextToken(tl);

	bprintf(buf1, ", &%s, \"%s\"", sy1->name, sy1->name);
	vcc_Eval_Func(tl, s_init, buf1, "ASDF", s_init + strlen(s_init) + 1);
	Fd(tl, 0, "\t%s(&%s);\n", s_fini, sy1->name);
	ExpectErr(tl, ';');

	bprintf(buf1, ", %s", sy1->name);
	/* Split the methods from the args */
	while (*p != '\0') {
		p += strlen(s_obj);
		bprintf(buf2, "%s%s", sy1->name, p);
		sy3 = VCC_AddSymbolStr(tl, buf2, SYM_FUNC);
		AN(sy3);
		sy3->eval = vcc_Eval_SymFunc;
		p += strlen(p) + 1;
		sy3->cfunc = p;
		p += strlen(p) + 1;

		/* Functions which return VOID are procedures */
		if (!memcmp(p, "VOID\0", 5))
			sy3->kind = SYM_PROC;

		sy3->args = p;
		sy3->extra = TlDup(tl, buf1);
		while (p[0] != '\0' || p[1] != '\0')
			p++;
		p += 2;
	}
	/*lint -restore */
}
Example #7
0
void
vcc_ParseImport(struct vcc *tl)
{
	void *hdl;
	char fn[1024];
	struct token *mod, *t1;
	const char *modname;
	const char *proto;
	const char **spec;
	struct symbol *sym;
	const struct symbol *osym;
	const char *p;
	// int *modlen;

	t1 = tl->t;
	SkipToken(tl, ID);		/* "import" */

	ExpectErr(tl, ID);
	mod = tl->t;

	vcc_NextToken(tl);

	osym = VCC_FindSymbol(tl, mod, SYM_NONE);
	if (osym != NULL && osym->kind != SYM_VMOD) {
		vsb_printf(tl->sb, "Module %.*s conflics with other symbol.\n",
		    PF(mod));
		vcc_ErrWhere2(tl, t1, tl->t);
		return;
	}
	if (osym != NULL) {
		vsb_printf(tl->sb, "Module %.*s already imported.\n",
		    PF(mod));
		vcc_ErrWhere2(tl, t1, tl->t);
		vsb_printf(tl->sb, "Previous import was here:\n");
		vcc_ErrWhere2(tl, osym->def_b, osym->def_e);
		return;
	}

	bprintf(fn, "%.*s", PF(mod));
	sym = VCC_AddSymbolStr(tl, fn, SYM_VMOD);
	ERRCHK(tl);
	AN(sym);
	sym->def_b = t1;
	sym->def_e = tl->t;

	if (tl->t->tok == ID) {
		if (!vcc_IdIs(tl->t, "from")) {
			vsb_printf(tl->sb, "Expected 'from path...' at ");
			vcc_ErrToken(tl, tl->t);
			vcc_ErrWhere(tl, tl->t);
			return;
		}
		vcc_NextToken(tl);
		ExpectErr(tl, CSTR);
		bprintf(fn, "%s", tl->t->dec);
		vcc_NextToken(tl);
	} else {
		bprintf(fn, "%s/libvmod_%.*s.so", tl->vmod_dir, PF(mod));
	}

	Fh(tl, 0, "static void *VGC_vmod_%.*s;\n", PF(mod));

	Fi(tl, 0, "\tVRT_Vmod_Init(&VGC_vmod_%.*s,\n", PF(mod));
	Fi(tl, 0, "\t    &Vmod_Func_%.*s,\n", PF(mod));
	Fi(tl, 0, "\t    sizeof(Vmod_Func_%.*s),\n", PF(mod));
	Fi(tl, 0, "\t    \"%.*s\",\n", PF(mod));
	Fi(tl, 0, "\t    ");
	EncString(tl->fi, fn, NULL, 0);
	Fi(tl, 0, ");\n");

	SkipToken(tl, ';');

	hdl = dlopen(fn, RTLD_NOW | RTLD_LOCAL);
	if (hdl == NULL) {
		vsb_printf(tl->sb, "Could not load module %.*s\n\t%s\n\t%s\n",
		    PF(mod), fn, dlerror());
		vcc_ErrWhere(tl, mod);
		return;
	}

	modname = dlsym(hdl, "Vmod_Name");
	if (modname == NULL) {
		vsb_printf(tl->sb, "Could not load module %.*s\n\t%s\n\t%s\n",
		    PF(mod), fn, "Symbol Vmod_Name not found");
		vcc_ErrWhere(tl, mod);
		return;
	}
	if (!vcc_IdIs(mod, modname)) {
		vsb_printf(tl->sb, "Could not load module %.*s\n\t%s\n",
		    PF(mod), fn);
		vsb_printf(tl->sb, "\tModule has wrong name: <%s>\n", modname);
		vcc_ErrWhere(tl, mod);
		return;
	}

	proto = dlsym(hdl, "Vmod_Proto");
	if (proto == NULL) {
		vsb_printf(tl->sb, "Could not load module %.*s\n\t%s\n\t%s\n",
		    PF(mod), fn, "Symbol Vmod_Proto not found");
		vcc_ErrWhere(tl, mod);
		return;
	}
	spec = dlsym(hdl, "Vmod_Spec");
	if (spec == NULL) {
		vsb_printf(tl->sb, "Could not load module %.*s\n\t%s\n\t%s\n",
		    PF(mod), fn, "Symbol Vmod_Spec not found");
		vcc_ErrWhere(tl, mod);
		return;
	}
	Fh(tl, 0, "static struct vmod_priv vmod_priv_%.*s;\n", PF(mod));
	for (; *spec != NULL; spec++) {
		p = *spec;
		if (!strcmp(p, "INIT")) {
			p += strlen(p) + 1;
			Fi(tl, 0, "\t%s(&vmod_priv_%.*s, &VCL_conf);\n", p, PF(mod));
		} else {
			sym = VCC_AddSymbolStr(tl, p, SYM_FUNC);
			ERRCHK(tl);
			AN(sym);
			sym->eval = vcc_Eval_Func;
			p += strlen(p) + 1;
			sym->cfunc = p;
			p += strlen(p) + 1;
			sym->args = p;

			/* Functions which return VOID are procedures */
			if (!memcmp(p, "VOID\0", 5))
				sym->kind = SYM_PROC;
		}
	}
	Fh(tl, 0, "\n%s\n", proto);

	/* XXX: zero the function pointer structure ?*/
	Ff(tl, 0, "\tvmod_priv_fini(&vmod_priv_%.*s);\n", PF(mod));
	Ff(tl, 0, "\tVRT_Vmod_Fini(&VGC_vmod_%.*s);\n", PF(mod));
}
Example #8
0
static void
vcc_ParseFunction(struct vcc *tl)
{
	int m, i;

	vcc_NextToken(tl);
	ExpectErr(tl, ID);
	if (!vcc_isCid(tl->t)) {
		VSB_printf(tl->sb,
		    "Names of VCL sub's cannot contain '-'\n");
		vcc_ErrWhere(tl, tl->t);
		return;
	}

	m = IsMethod(tl->t);
	if (m == -2) {
		VSB_printf(tl->sb,
		    "VCL sub's named 'vcl*' are reserved names.\n");
		vcc_ErrWhere(tl, tl->t);
		VSB_printf(tl->sb, "Valid vcl_* methods are:\n");
		for (i = 0; method_tab[i].name != NULL; i++)
			VSB_printf(tl->sb, "\t%s\n", method_tab[i].name);
		return;
	} else if (m != -1) {
		assert(m < VCL_MET_MAX);
		tl->fb = tl->fm[m];
		if (tl->mprocs[m] == NULL) {
			(void)vcc_AddDef(tl, tl->t, SYM_SUB);
			vcc_AddRef(tl, tl->t, SYM_SUB);
			tl->mprocs[m] = vcc_AddProc(tl, tl->t);
		}
		tl->curproc = tl->mprocs[m];
		Fb(tl, 1, "  /* ... from ");
		vcc_Coord(tl, tl->fb, NULL);
		Fb(tl, 0, " */\n");
	} else {
		tl->fb = tl->fc;
		i = vcc_AddDef(tl, tl->t, SYM_SUB);
		if (i > 1) {
			VSB_printf(tl->sb,
			    "Function %.*s redefined\n", PF(tl->t));
			vcc_ErrWhere(tl, tl->t);
			return;
		}
		tl->curproc = vcc_AddProc(tl, tl->t);
		Fh(tl, 0, "int VGC_function_%.*s "
		    "(VRT_CTX);\n", PF(tl->t));
		Fc(tl, 1, "\nint __match_proto__(vcl_func_t)\n");
		Fc(tl, 1, "VGC_function_%.*s(VRT_CTX)\n",
		    PF(tl->t));
	}
	vcc_NextToken(tl);
	tl->indent += INDENT;
	Fb(tl, 1, "{\n");
	L(tl, vcc_Compound(tl));
	if (m == -1) {
		/*
		 * non-method subroutines must have an explicit non-action
		 * return in case they just fall through the bottom.
		 */
		Fb(tl, 1, "  return(0);\n");
	}
	Fb(tl, 1, "}\n");
	tl->indent -= INDENT;
	tl->fb = NULL;
	tl->curproc = NULL;
}
Example #9
0
static void
vcc_expr_cmp(struct vcc *tl, struct expr **e, enum var_type fmt)
{
	struct expr *e2;
	const struct cmps *cp;
	char buf[256];
	char *re;
	const char *not;
	struct token *tk;

	*e = NULL;

	vcc_expr_add(tl, e, fmt);
	ERRCHK(tl);

	if ((*e)->fmt == BOOL)
		return;

	tk = tl->t;
	for (cp = vcc_cmps; cp->fmt != VOID; cp++)
		if ((*e)->fmt == cp->fmt && tl->t->tok == cp->token)
			break;
	if (cp->fmt != VOID) {
		vcc_NextToken(tl);
		vcc_expr_add(tl, &e2, (*e)->fmt);
		ERRCHK(tl);
		if (e2->fmt != (*e)->fmt) { /* XXX */
			vsb_printf(tl->sb, "Comparison of different types: ");
			vsb_printf(tl->sb, "%s ", vcc_Type((*e)->fmt));
			vcc_ErrToken(tl, tk);
			vsb_printf(tl->sb, " %s\n", vcc_Type(e2->fmt));
			vcc_ErrWhere(tl, tk);
			return;
		}
		*e = vcc_expr_edit(BOOL, cp->emit, *e, e2);
		return;
	}
	if ((*e)->fmt == STRING &&
	    (tl->t->tok == '~' || tl->t->tok == T_NOMATCH)) {
	        not = tl->t->tok == '~' ? "" : "!";
		vcc_NextToken(tl);
		ExpectErr(tl, CSTR);
		re = vcc_regexp(tl);
		ERRCHK(tl);
		vcc_NextToken(tl);
		bprintf(buf, "%sVRT_re_match(\v1, %s)", not, re);
		*e = vcc_expr_edit(BOOL, buf, *e, NULL);
		return;
	}
	if ((*e)->fmt == IP &&
	    (tl->t->tok == '~' || tl->t->tok == T_NOMATCH)) {
	        not = tl->t->tok == '~' ? "" : "!";
		vcc_NextToken(tl);
		ExpectErr(tl, ID);
		vcc_AddRef(tl, tl->t, SYM_ACL);
		ERRCHK(tl);
		bprintf(buf, "%smatch_acl_named_%.*s(sp, \v1)", not, PF(tl->t));
		vcc_NextToken(tl);
		*e = vcc_expr_edit(BOOL, buf, *e, NULL);
		return;
	}
	if ((*e)->fmt == IP && (tl->t->tok == T_EQ || tl->t->tok == T_NEQ)) {
		vcc_Acl_Hack(tl, buf);
		*e = vcc_expr_edit(BOOL, buf, *e, NULL);
		return;
	}
	if ((*e)->fmt == BACKEND &&
	    (tl->t->tok == T_EQ || tl->t->tok == T_NEQ)) {
		vcc_NextToken(tl);
		ExpectErr(tl, ID);
		vcc_AddRef(tl, tl->t, SYM_BACKEND);
		ERRCHK(tl);
		bprintf(buf, "(\v1 %.*s VGCDIR(_%.*s))", PF(tk), PF(tl->t));
		vcc_NextToken(tl);
		*e = vcc_expr_edit(BOOL, buf, *e, NULL);
		return;
	}
	switch (tl->t->tok) {
	case T_EQ:
	case T_NEQ:
	case '<':
	case T_LEQ:
	case '>':
	case T_GEQ:
	case '~':
	case T_NOMATCH:
		vsb_printf(tl->sb, "Operator %.*s not possible on %s\n",
		    PF(tl->t), vcc_Type((*e)->fmt));
		vcc_ErrWhere(tl, tl->t);
		return;
	default:
		break;
	}
	if (fmt == BOOL && (*e)->fmt == STRING) {
		*e = vcc_expr_edit(BOOL, "(\v1 != 0)", *e, NULL);
		return;
	}
}
Example #10
0
static void
vcc_expr_add(struct vcc *tl, struct expr **e, enum var_type fmt)
{
	struct expr  *e2;
	enum var_type f2;
	struct token *tk;

	*e = NULL;
	vcc_expr_mul(tl, e, fmt);
	ERRCHK(tl);
	f2 = (*e)->fmt;

	if ((f2 == STRING_LIST || f2 == STRING) && tl->t->tok == '+') {
		while (tl->t->tok == '+') {
			vcc_NextToken(tl);
			vcc_expr_mul(tl, &e2, STRING);
			ERRCHK(tl);
			if (e2->fmt != STRING && e2->fmt != STRING_LIST)
				vcc_expr_tostring(&e2, f2);
			ERRCHK(tl);
			assert(e2->fmt == STRING || e2->fmt == STRING_LIST);
			if ((*e)->constant &&  e2->constant) {
				assert((*e)->fmt == STRING);
				assert(e2->fmt == STRING);
				*e = vcc_expr_edit(STRING, "\v1\n\v2", *e, e2);
			} else {
				*e = vcc_expr_edit(STRING_LIST,
				    "\v1,\n\v2", *e, e2);
			}
		}
	}
	if (fmt != STRING_LIST && (*e)->fmt == STRING_LIST)
		*e = vcc_expr_edit(STRING,
		    "\v+VRT_WrkString(sp,\n\v1,\nvrt_magic_string_end)",
		    *e, NULL);
	if (fmt == STRING_LIST && (*e)->fmt == STRING)
		(*e)->fmt = STRING_LIST;

	switch(f2) {
	case INT:	break;
	case TIME:	break;
	case DURATION:	break;
	case BYTES:	break;
	default:
		if (tl->t->tok != '+' && tl->t->tok != '-')
			return;
		vsb_printf(tl->sb, "Operator %.*s not possible on type %s.\n",
		    PF(tl->t), vcc_Type(f2));
		vcc_ErrWhere(tl, tl->t);
		return;
	}

	while (tl->t->tok == '+' || tl->t->tok == '-') {
		if (f2 == TIME)
			f2 = DURATION;
		tk = tl->t;
		vcc_NextToken(tl);
		vcc_expr_mul(tl, &e2, f2);
		ERRCHK(tl);
		if (tk->tok == '-' && (*e)->fmt == TIME && e2->fmt == TIME) {
			/* OK */
		} else if (tk->tok == '-' &&
		    (*e)->fmt == BYTES && e2->fmt == BYTES) {
			/* OK */
		} else if (e2->fmt != f2) {
			vsb_printf(tl->sb, "%s %.*s %s not possible.\n",
			    vcc_Type((*e)->fmt), PF(tk), vcc_Type(e2->fmt));
			vcc_ErrWhere2(tl, tk, tl->t);
			return;
		}
		if (tk->tok == '+')
			*e = vcc_expr_edit(f2, "(\v1+\v2)", *e, e2);
		else if (f2 == TIME && e2->fmt == TIME)
			*e = vcc_expr_edit(DURATION, "(\v1-\v2)", *e, e2);
		else
			*e = vcc_expr_edit(f2, "(\v1-\v2)", *e, e2);
	}
}
Example #11
0
static void
vcc_expr4(struct vcc *tl, struct expr **e, enum var_type fmt)
{
	struct expr *e1, *e2;
	const struct symbol *sym;
	double d;

	*e = NULL;
	if (tl->t->tok == '(') {
		SkipToken(tl, '(');
		vcc_expr0(tl, &e2, fmt);
		ERRCHK(tl);
		SkipToken(tl, ')');
		*e = vcc_expr_edit(e2->fmt, "(\v1)", e2, NULL);
		return;
	}
	switch(tl->t->tok) {
	case ID:
		/*
		 * XXX: what if var and func/proc had same name ?
		 * XXX: look for SYM_VAR first for consistency ?
		 */
		sym = VCC_FindSymbol(tl, tl->t, SYM_NONE);
		if (sym == NULL || sym->eval == NULL) {
			vsb_printf(tl->sb, "Symbol not found: ");
			vcc_ErrToken(tl, tl->t);
			vsb_printf(tl->sb, " (expected type %s):\n",
			    vcc_Type(fmt));
			vcc_ErrWhere(tl, tl->t);
			return;
		}
		AN(sym);
		switch(sym->kind) {
		case SYM_VAR:
		case SYM_FUNC:
		case SYM_BACKEND:
			AN(sym->eval);
			AZ(*e);
			sym->eval(tl, e, sym);
			return;
		default:
			break;
		}
		vsb_printf(tl->sb,
		    "Symbol type (%s) can not be used in expression.\n",
		    VCC_SymKind(tl, sym));
		vcc_ErrWhere(tl, tl->t);
		return;
	case CSTR:
		assert(fmt != VOID);
		e1 = vcc_new_expr();
		EncToken(e1->vsb, tl->t);
		e1->fmt = STRING;
		e1->t1 = tl->t;
		e1->constant = 1;
		vcc_NextToken(tl);
		AZ(vsb_finish(e1->vsb));
		*e = e1;
		break;
	case CNUM:
		/*
		 * XXX: %g may not have enough decimals by default
		 * XXX: but %a is ugly, isn't it ?
		 */
		assert(fmt != VOID);
		if (fmt == DURATION) {
			vcc_RTimeVal(tl, &d);
			ERRCHK(tl);
			e1 = vcc_mk_expr(DURATION, "%g", d);
		} else if (fmt == BYTES) {
			vcc_ByteVal(tl, &d);
			ERRCHK(tl);
			e1 = vcc_mk_expr(BYTES, "%.1f", d);
			ERRCHK(tl);
		} else if (fmt == REAL) {
			e1 = vcc_mk_expr(REAL, "%g", vcc_DoubleVal(tl));
			ERRCHK(tl);
		} else {
			e1 = vcc_mk_expr(INT, "%.*s", PF(tl->t));
			vcc_NextToken(tl);
		}
		e1->constant = 1;
		*e = e1;
		break;
	default:
		vsb_printf(tl->sb, "Unknown token ");
		vcc_ErrToken(tl, tl->t);
		vsb_printf(tl->sb, " when looking for %s\n\n", vcc_Type(fmt));
		vcc_ErrWhere(tl, tl->t);
		break;
	}
}
Example #12
0
static void
vcc_ParseHostDef(struct vcc *tl, const struct token *t_be, const char *vgcname)
{
	struct token *t_field;
	struct token *t_val;
	struct token *t_host = NULL;
	struct token *t_port = NULL;
	struct token *t_hosthdr = NULL;
	struct fld_spec *fs;
	struct inifin *ifp;
	struct vsb *vsb;
	char *p;
	unsigned u;
	double t;

	fs = vcc_FldSpec(tl,
	    "!host",
	    "?port",
	    "?host_header",
	    "?connect_timeout",
	    "?first_byte_timeout",
	    "?between_bytes_timeout",
	    "?probe",
	    "?max_connections",
	    "?proxy_header",
	    NULL);

	SkipToken(tl, '{');

	vsb = VSB_new_auto();
	AN(vsb);
	tl->fb = vsb;

	Fb(tl, 0, "\nstatic const struct vrt_backend vgc_dir_priv_%s = {\n",
	    vgcname);

	Fb(tl, 0, "\t.magic = VRT_BACKEND_MAGIC,\n");
	Fb(tl, 0, "\t.vcl_name = \"%.*s", PF(t_be));
	Fb(tl, 0, "\",\n");

	/* Check for old syntax */
	if (tl->t->tok == ID && vcc_IdIs(tl->t, "set")) {
		VSB_printf(tl->sb,
		    "NB: Backend Syntax has changed:\n"
		    "Remove \"set\" and \"backend\" in front"
		    " of backend fields.\n" );
		vcc_ErrToken(tl, tl->t);
		VSB_printf(tl->sb, " at ");
		vcc_ErrWhere(tl, tl->t);
		return;
	}

	while (tl->t->tok != '}') {

		vcc_IsField(tl, &t_field, fs);
		ERRCHK(tl);
		if (vcc_IdIs(t_field, "host")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_host = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "port")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_port = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "host_header")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_hosthdr = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "connect_timeout")) {
			Fb(tl, 0, "\t.connect_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "first_byte_timeout")) {
			Fb(tl, 0, "\t.first_byte_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "between_bytes_timeout")) {
			Fb(tl, 0, "\t.between_bytes_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "max_connections")) {
			u = vcc_UintVal(tl);
			ERRCHK(tl);
			SkipToken(tl, ';');
			Fb(tl, 0, "\t.max_connections = %u,\n", u);
		} else if (vcc_IdIs(t_field, "proxy_header")) {
			t_val = tl->t;
			u = vcc_UintVal(tl);
			ERRCHK(tl);
			if (u != 1 && u != 2) {
				VSB_printf(tl->sb,
				    ".proxy_header must be 1 or 2\n");
				vcc_ErrWhere(tl, t_val);
				return;
			}
			SkipToken(tl, ';');
			Fb(tl, 0, "\t.proxy_header = %u,\n", u);
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == '{') {
			vcc_ParseProbeSpec(tl, NULL, &p);
			Fb(tl, 0, "\t.probe = &%s,\n", p);
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == ID) {
			if (VCC_FindSymbol(tl, tl->t, SYM_PROBE) == NULL) {
				VSB_printf(tl->sb, "Probe %.*s not found\n",
				    PF(tl->t));
				vcc_ErrWhere(tl, tl->t);
				return;
			}
			Fb(tl, 0, "\t.probe = &vgc_probe_%.*s,\n", PF(tl->t));
			vcc_AddRef(tl, tl->t, SYM_PROBE);
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "probe")) {
			VSB_printf(tl->sb,
			    "Expected '{' or name of probe, got ");
			vcc_ErrToken(tl, tl->t);
			VSB_printf(tl->sb, " at\n");
			vcc_ErrWhere(tl, tl->t);
			return;
		} else {
			ErrInternal(tl);
			return;
		}

	}

	vcc_FieldsOk(tl, fs);
	ERRCHK(tl);

	/* Check that the hostname makes sense */
	assert(t_host != NULL);
	Emit_Sockaddr(tl, t_host, t_port);
	ERRCHK(tl);

	ExpectErr(tl, '}');

	/* We have parsed it all, emit the ident string */

	/* Emit the hosthdr field, fall back to .host if not specified */
	Fb(tl, 0, "\t.hosthdr = ");
	if (t_hosthdr != NULL)
		EncToken(tl->fb, t_hosthdr);
	else
		EncToken(tl->fb, t_host);
	Fb(tl, 0, ",\n");

	/* Close the struct */
	Fb(tl, 0, "};\n");

	vcc_NextToken(tl);

	tl->fb = NULL;
	AZ(VSB_finish(vsb));
	Fh(tl, 0, "%s", VSB_data(vsb));
	VSB_destroy(&vsb);

	ifp = New_IniFin(tl);
	VSB_printf(ifp->ini,
	    "\t%s =\n\t    VRT_new_backend(ctx, &vgc_dir_priv_%s);",
	    vgcname, vgcname);
}
Example #13
0
static void
vcc_ParseHostDef(struct vcc *tl, int serial, const char *vgcname)
{
	struct token *t_field;
	struct token *t_host = NULL;
	struct token *t_port = NULL;
	struct token *t_hosthdr = NULL;
	unsigned saint = UINT_MAX;
	struct fld_spec *fs;
	struct vsb *vsb;
	unsigned u;
	double t;

	Fh(tl, 1, "\n#define VGC_backend_%s %d\n", vgcname, tl->ndirector);

	fs = vcc_FldSpec(tl,
	    "!host",
	    "?port",
	    "?host_header",
	    "?connect_timeout",
	    "?first_byte_timeout",
	    "?between_bytes_timeout",
	    "?probe",
	    "?max_connections",
	    "?saintmode_threshold",
	    NULL);

	SkipToken(tl, '{');

	vsb = VSB_new_auto();
	AN(vsb);
	tl->fb = vsb;

	Fb(tl, 0, "\nstatic const struct vrt_backend vgc_dir_priv_%s = {\n",
	    vgcname);

	Fb(tl, 0, "\t.vcl_name = \"%.*s", PF(tl->t_dir));
	if (serial >= 0)
		Fb(tl, 0, "[%d]", serial);
	Fb(tl, 0, "\",\n");

	/* Check for old syntax */
	if (tl->t->tok == ID && vcc_IdIs(tl->t, "set")) {
		VSB_printf(tl->sb,
		    "NB: Backend Syntax has changed:\n"
		    "Remove \"set\" and \"backend\" in front"
		    " of backend fields.\n" );
		vcc_ErrToken(tl, tl->t);
		VSB_printf(tl->sb, " at ");
		vcc_ErrWhere(tl, tl->t);
		return;
	}

	while (tl->t->tok != '}') {

		vcc_IsField(tl, &t_field, fs);
		ERRCHK(tl);
		if (vcc_IdIs(t_field, "host")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_host = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "port")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_port = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "host_header")) {
			ExpectErr(tl, CSTR);
			assert(tl->t->dec != NULL);
			t_hosthdr = tl->t;
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "connect_timeout")) {
			Fb(tl, 0, "\t.connect_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "first_byte_timeout")) {
			Fb(tl, 0, "\t.first_byte_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "between_bytes_timeout")) {
			Fb(tl, 0, "\t.between_bytes_timeout = ");
			vcc_Duration(tl, &t);
			ERRCHK(tl);
			Fb(tl, 0, "%g,\n", t);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "max_connections")) {
			u = vcc_UintVal(tl);
			ERRCHK(tl);
			SkipToken(tl, ';');
			Fb(tl, 0, "\t.max_connections = %u,\n", u);
		} else if (vcc_IdIs(t_field, "saintmode_threshold")) {
			u = vcc_UintVal(tl);
			/* UINT_MAX == magic number to mark as unset, so
			 * not allowed here.
			 */
			if (u == UINT_MAX) {
				VSB_printf(tl->sb,
				    "Value outside allowed range: ");
				vcc_ErrToken(tl, tl->t);
				VSB_printf(tl->sb, " at\n");
				vcc_ErrWhere(tl, tl->t);
			}
			ERRCHK(tl);
			saint = u;
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == '{') {
			Fb(tl, 0, "\t.probe = &vgc_probe__%d,\n", tl->nprobe);
			vcc_ParseProbeSpec(tl);
			ERRCHK(tl);
		} else if (vcc_IdIs(t_field, "probe") && tl->t->tok == ID) {
			Fb(tl, 0, "\t.probe = &vgc_probe_%.*s,\n", PF(tl->t));
			vcc_AddRef(tl, tl->t, SYM_PROBE);
			vcc_NextToken(tl);
			SkipToken(tl, ';');
		} else if (vcc_IdIs(t_field, "probe")) {
			VSB_printf(tl->sb,
			    "Expected '{' or name of probe.");
			vcc_ErrToken(tl, tl->t);
			VSB_printf(tl->sb, " at\n");
			vcc_ErrWhere(tl, tl->t);
			return;
		} else {
			ErrInternal(tl);
			return;
		}

	}

	vcc_FieldsOk(tl, fs);
	ERRCHK(tl);

	/* Check that the hostname makes sense */
	assert(t_host != NULL);
	if (t_port != NULL)
		Emit_Sockaddr(tl, t_host, t_port->dec);
	else
		Emit_Sockaddr(tl, t_host, "80");
	ERRCHK(tl);

	ExpectErr(tl, '}');

	/* We have parsed it all, emit the ident string */

	/* Emit the hosthdr field, fall back to .host if not specified */
	Fb(tl, 0, "\t.hosthdr = ");
	if (t_hosthdr != NULL)
		EncToken(tl->fb, t_hosthdr);
	else
		EncToken(tl->fb, t_host);
	Fb(tl, 0, ",\n");

	Fb(tl, 0, "\t.saintmode_threshold = %d,\n",saint);

	/* Close the struct */
	Fb(tl, 0, "};\n");

	vcc_NextToken(tl);

	tl->fb = NULL;
	AZ(VSB_finish(vsb));
	Fh(tl, 0, "%s", VSB_data(vsb));
	VSB_delete(vsb);

	Fi(tl, 0, "\tVRT_init_dir(cli, VCL_conf.director, \"simple\",\n"
	    "\t    VGC_backend_%s, &vgc_dir_priv_%s);\n", vgcname, vgcname);
	Ff(tl, 0, "\tVRT_fini_dir(cli, VGCDIR(%s));\n", vgcname);
	tl->ndirector++;
}