GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
 */

#include "config.h"

#include <glob.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "vcc_compile.h"

#include "vfil.h"

struct source *
vcc_new_source(const char *src, const char *kind, const char *name)
{
        struct source *sp;

        AN(src);
        AN(name);
        ALLOC_OBJ(sp, SOURCE_MAGIC);
        AN(sp);
        REPLACE(sp->name, name);
        sp->kind = kind;
        sp->b = src;
        sp->e = strchr(src, '\0');
        VTAILQ_INIT(&sp->src_tokens);
        return (sp);
}

/*--------------------------------------------------------------------*/

struct source *
vcc_file_source(struct vcc *tl, const char *fn)
{
        char *f, *fnp;
        struct source *sp;

        if (!tl->unsafe_path && strchr(fn, '/') != NULL) {
                VSB_printf(tl->sb, "VCL filename '%s' is unsafe.\n", fn);
                tl->err = 1;
                return (NULL);
        }
        f = NULL;
        if (VFIL_searchpath(tl->vcl_path, NULL, &f, fn, &fnp) || f == NULL) {
                VSB_printf(tl->sb, "Cannot read file '%s' (%s)\n",
                    fnp != NULL ? fnp : fn, strerror(errno));
                free(fnp);
                tl->err = 1;
                return (NULL);
        }
        sp = vcc_new_source(f, "file", fnp);
        free(fnp);
        return (sp);
}

/*--------------------------------------------------------------------*/

static void
vcc_include_file(struct vcc *tl, const struct source *src_sp,
    const char *filename, const struct token *parent_token)
{
        struct source *sp;

        sp = vcc_file_source(tl, filename);
        if (sp == NULL)
                return;

        sp->parent = src_sp;
        sp->parent_tok = parent_token;
        vcc_lex_source(tl, sp, 0);
}

/*--------------------------------------------------------------------*/

static void
vcc_include_glob_file(struct vcc *tl, const struct source *src_sp,
    const char *filename, const struct token *parent_token)
{
        glob_t  g[1];
        unsigned u;
        int i;

        memset(g, 0, sizeof g);
        i = glob(filename, 0, NULL, g);
        switch (i) {
        case 0:
                for (u = 0; !tl->err && u < g->gl_pathc; u++) {
                        vcc_include_file(
                            tl, src_sp, g->gl_pathv[u], parent_token);
                }
                break;
        case GLOB_NOMATCH:
                VSB_cat(tl->sb, "glob pattern matched no files.\n");
                tl->err = 1;
                break;
        default:
                VSB_printf(tl->sb, "glob(3) expansion failed (%d)\n", i);
                tl->err = 1;
                break;
        }
        globfree(g);
}

/*--------------------------------------------------------------------
 * NB: We cannot use vcc_ErrWhere2() on tokens which are not on the
 * NB: tl->tokens list.
 */

static struct token *
vcc_lex_include(struct vcc *tl, const struct source *src_sp, struct token *t)
{
        struct token *tok1;
        int i, glob_flag = 0;
        struct vsb *vsb = NULL;
        const char *filename;
        const char *p;

        assert(vcc_IdIs(t, "include"));

        tok1 = VTAILQ_NEXT(t, src_list);
        AN(tok1);

        while (1) {
                t = VTAILQ_NEXT(tok1, src_list);
                AN(t);
                i = vcc_IsFlagRaw(tl, tok1, t);
                if (i < 0)
                        break;
                if (vcc_IdIs(t, "glob")) {
                        glob_flag = i;
                } else {
                        VSB_cat(tl->sb, "Unknown include flag:\n");
                        vcc_ErrWhere(tl, t);
                        return (t);
                }
                tok1 = VTAILQ_NEXT(t, src_list);
                AN(tok1);
        }

        if (tok1->tok != CSTR) {
                VSB_cat(tl->sb,
                    "include not followed by string constant.\n");
                vcc_ErrWhere(tl, tok1);
                return (t);
        }
        t = VTAILQ_NEXT(tok1, src_list);
        AN(t);

        if (t->tok != ';') {
                VSB_cat(tl->sb,
                    "include <string> not followed by semicolon.\n");
                vcc_ErrWhere(tl, tok1);
                return (t);
        }

        filename = tok1->dec;

        if (filename[0] == '.' && filename[1] == '/') {
                /*
                 * Nested include filenames, starting with "./" are
                 * resolved relative to the VCL file which contains
                 * the include directive.
                 */
                if (src_sp->name[0] != '/') {
                        VSB_cat(tl->sb,
                            "include \"./xxxxx\"; needs absolute "
                            "filename of including file.\n");
                        vcc_ErrWhere(tl, tok1);
                        return (t);
                }
                vsb = VSB_new_auto();
                AN(vsb);
                p = strrchr(src_sp->name, '/');
                AN(p);
                VSB_bcat(vsb, src_sp->name, p - src_sp->name);
                VSB_cat(vsb, filename + 1);
                AZ(VSB_finish(vsb));
                filename = VSB_data(vsb);
        }

        if (glob_flag)
                vcc_include_glob_file(tl, src_sp, filename, tok1);
        else
                vcc_include_file(tl, src_sp, filename, tok1);
        if (vsb != NULL)
                VSB_destroy(&vsb);
        if (tl->err)
                vcc_ErrWhere(tl, tok1);
        return (t);
}

void
vcc_lex_source(struct vcc *tl, struct source *src_sp, int eoi)
{
        struct token *t;
        const struct source *sp1;

        CHECK_OBJ_NOTNULL(src_sp, SOURCE_MAGIC);

        for (sp1 = src_sp->parent; sp1 != NULL; sp1 = sp1->parent) {
                if (!strcmp(sp1->name, src_sp->name) &&
                    !strcmp(sp1->kind, src_sp->kind)) {
                        VSB_printf(tl->sb,
                            "Recursive use of %s \"%s\"\n\n",
                            src_sp->kind, src_sp->name);
                        tl->err = 1;
                        return;
                }
        }

        VTAILQ_INSERT_TAIL(&tl->sources, src_sp, list);
        src_sp->idx = tl->nsources++;

        vcc_Lexer(tl, src_sp);
        if (tl->err)
                return;
        VTAILQ_FOREACH(t, &src_sp->src_tokens, src_list) {
                if (!eoi && t->tok == EOI)
                        break;

                if (t->tok == ID && vcc_IdIs(t, "include")) {
                        t = vcc_lex_include(tl, src_sp, t);
                } else {
                        VTAILQ_INSERT_TAIL(&tl->tokens, t, list);
                }
                if (tl->err)
                        return;
        }
}

		varnish-cache/lib/libvcc/vcc_source.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*/
30
31		#include "config.h"
32
33		#include <glob.h>
34		#include <stdlib.h>
35		#include <string.h>
36		#include <unistd.h>
37
38		#include "vcc_compile.h"
39
40		#include "vfil.h"
41
42		struct source *
43	179960	vcc_new_source(const char src, const char kind, const char *name)
44		{
45		struct source *sp;
46
47	179960	AN(src);
48	179960	AN(name);
49	179960	ALLOC_OBJ(sp, SOURCE_MAGIC);
50	179960	AN(sp);
51	179960	REPLACE(sp->name, name);
52	179960	sp->kind = kind;
53	179960	sp->b = src;
54	179960	sp->e = strchr(src, '\0');
55	179960	VTAILQ_INIT(&sp->src_tokens);
56	179960	return (sp);
57		}
58
59		/--------------------------------------------------------------------/
60
61		struct source *
62	2080	vcc_file_source(struct vcc tl, const char fn)
63		{
64		char f, fnp;
65		struct source *sp;
66
67	2080	if (!tl->unsafe_path && strchr(fn, '/') != NULL) {
68	40	VSB_printf(tl->sb, "VCL filename '%s' is unsafe.\n", fn);
69	40	tl->err = 1;
70	40	return (NULL);
71		}
72	2040	f = NULL;
73	2040	if (VFIL_searchpath(tl->vcl_path, NULL, &f, fn, &fnp) \|\| f == NULL) {
74	80	VSB_printf(tl->sb, "Cannot read file '%s' (%s)\n",
75	40	fnp != NULL ? fnp : fn, strerror(errno));
76	40	free(fnp);
77	40	tl->err = 1;
78	40	return (NULL);
79		}
80	2000	sp = vcc_new_source(f, "file", fnp);
81	2000	free(fnp);
82	2000	return (sp);
83	2080	}
84
85		/--------------------------------------------------------------------/
86
87		static void
88	1600	vcc_include_file(struct vcc tl, const struct source src_sp,
89		const char filename, const struct token parent_token)
90		{
91		struct source *sp;
92
93	1600	sp = vcc_file_source(tl, filename);
94	1600	if (sp == NULL)
95	40	return;
96
97	1560	sp->parent = src_sp;
98	1560	sp->parent_tok = parent_token;
99	1560	vcc_lex_source(tl, sp, 0);
100	1600	}
101
102		/--------------------------------------------------------------------/
103
104		static void
105	160	vcc_include_glob_file(struct vcc tl, const struct source src_sp,
106		const char filename, const struct token parent_token)
107		{
108		glob_t g[1];
109		unsigned u;
110		int i;
111
112	160	memset(g, 0, sizeof g);
113	160	i = glob(filename, 0, NULL, g);
114	160	switch (i) {
115		case 0:
116	320	for (u = 0; !tl->err && u < g->gl_pathc; u++) {
117	200	vcc_include_file(
118	200	tl, src_sp, g->gl_pathv[u], parent_token);
119	200	}
120	120	break;
121		case GLOB_NOMATCH:
122	40	VSB_cat(tl->sb, "glob pattern matched no files.\n");
123	40	tl->err = 1;
124	40	break;
125		default:
126	0	VSB_printf(tl->sb, "glob(3) expansion failed (%d)\n", i);
127	0	tl->err = 1;
128	0	break;
129		}
130	160	globfree(g);
131	160	}
132
133		/*--------------------------------------------------------------------
134		* NB: We cannot use vcc_ErrWhere2() on tokens which are not on the
135		* NB: tl->tokens list.
136		*/
137
138		static struct token *
139	1760	vcc_lex_include(struct vcc tl, const struct source src_sp, struct token *t)
140		{
141		struct token *tok1;
142	1760	int i, glob_flag = 0;
143	1760	struct vsb *vsb = NULL;
144		const char *filename;
145		const char *p;
146
147	1760	assert(vcc_IdIs(t, "include"));
148
149	1760	tok1 = VTAILQ_NEXT(t, src_list);
150	1760	AN(tok1);
151
152	1960	while (1) {
153	1960	t = VTAILQ_NEXT(tok1, src_list);
154	1960	AN(t);
155	1960	i = vcc_IsFlagRaw(tl, tok1, t);
156	1960	if (i < 0)
157	1760	break;
158	200	if (vcc_IdIs(t, "glob")) {
159	200	glob_flag = i;
160	200	} else {
161	0	VSB_cat(tl->sb, "Unknown include flag:\n");
162	0	vcc_ErrWhere(tl, t);
163	0	return (t);
164		}
165	200	tok1 = VTAILQ_NEXT(t, src_list);
166	200	AN(tok1);
167		}
168
169	1760	if (tok1->tok != CSTR) {
170	80	VSB_cat(tl->sb,
171		"include not followed by string constant.\n");
172	80	vcc_ErrWhere(tl, tok1);
173	80	return (t);
174		}
175	1680	t = VTAILQ_NEXT(tok1, src_list);
176	1680	AN(t);
177
178	1680	if (t->tok != ';') {
179	40	VSB_cat(tl->sb,
180		"include <string> not followed by semicolon.\n");
181	40	vcc_ErrWhere(tl, tok1);
182	40	return (t);
183		}
184
185	1640	filename = tok1->dec;
186
187	1640	if (filename[0] == '.' && filename[1] == '/') {
188		/*
189		* Nested include filenames, starting with "./" are
190		* resolved relative to the VCL file which contains
191		* the include directive.
192		*/
193	400	if (src_sp->name[0] != '/') {
194	80	VSB_cat(tl->sb,
195		"include \"./xxxxx\"; needs absolute "
196		"filename of including file.\n");
197	80	vcc_ErrWhere(tl, tok1);
198	80	return (t);
199		}
200	320	vsb = VSB_new_auto();
201	320	AN(vsb);
202	320	p = strrchr(src_sp->name, '/');
203	320	AN(p);
204	320	VSB_bcat(vsb, src_sp->name, p - src_sp->name);
205	320	VSB_cat(vsb, filename + 1);
206	320	AZ(VSB_finish(vsb));
207	320	filename = VSB_data(vsb);
208	320	}
209
210	1560	if (glob_flag)
211	160	vcc_include_glob_file(tl, src_sp, filename, tok1);
212		else
213	1400	vcc_include_file(tl, src_sp, filename, tok1);
214	1560	if (vsb != NULL)
215	320	VSB_destroy(&vsb);
216	1560	if (tl->err)
217	280	vcc_ErrWhere(tl, tok1);
218	1560	return (t);
219	1760	}
220
221		void
222	179960	vcc_lex_source(struct vcc tl, struct source src_sp, int eoi)
223		{
224		struct token *t;
225		const struct source *sp1;
226
227	179960	CHECK_OBJ_NOTNULL(src_sp, SOURCE_MAGIC);
228
229	182040	for (sp1 = src_sp->parent; sp1 != NULL; sp1 = sp1->parent) {
230	2160	if (!strcmp(sp1->name, src_sp->name) &&
231	80	!strcmp(sp1->kind, src_sp->kind)) {
232	160	VSB_printf(tl->sb,
233		"Recursive use of %s \"%s\"\n\n",
234	80	src_sp->kind, src_sp->name);
235	80	tl->err = 1;
236	80	return;
237		}
238	2080	}
239
240	179880	VTAILQ_INSERT_TAIL(&tl->sources, src_sp, list);
241	179880	src_sp->idx = tl->nsources++;
242
243	179880	vcc_Lexer(tl, src_sp);
244	179880	if (tl->err)
245	920	return;
246	95973920	VTAILQ_FOREACH(t, &src_sp->src_tokens, src_list) {
247	95855400	if (!eoi && t->tok == EOI)
248	59960	break;
249
250	95795440	if (t->tok == ID && vcc_IdIs(t, "include")) {
251	1760	t = vcc_lex_include(tl, src_sp, t);
252	1760	} else {
253	95793680	VTAILQ_INSERT_TAIL(&tl->tokens, t, list);
254		}
255	95795440	if (tl->err)
256	480	return;
257	95794960	}
258	179960	}