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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/relayctl/parser.c	Lines:	0	70	0.0 %
Date:	2017-11-13	Branches:	0	62	0.0 %


/*	$OpenBSD: parser.c,v 1.27 2015/01/22 17:42:09 reyk Exp $	*/

/*
 * Copyright (c) 2006 Pierre-Yves Ritschard <pyr@openbsd.org>
 * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "relayd.h"
#include "parser.h"

enum token_type {
	NOTOKEN,
	ENDTOKEN,
	HOSTID,
	TABLEID,
	RDRID,
	KEYWORD,
	PATH
};

struct token {
	enum token_type		 type;
	const char		*keyword;
	int			 value;
	const struct token	*next;
};

static const struct token t_main[];
static const struct token t_show[];
static const struct token t_rdr[];
static const struct token t_table[];
static const struct token t_host[];
static const struct token t_rdr_id[];
static const struct token t_table_id[];
static const struct token t_host_id[];
static const struct token t_log[];
static const struct token t_load[];

static const struct token t_main[] = {
	{KEYWORD,	"monitor",	MONITOR,	NULL},
	{KEYWORD,	"show",		NONE,		t_show},
	{KEYWORD,	"load",		LOAD,		t_load},
	{KEYWORD,	"poll",		POLL,		NULL},
	{KEYWORD,	"reload",	RELOAD,		NULL},
	{KEYWORD,	"stop",		SHUTDOWN,	NULL},
	{KEYWORD,	"redirect",	NONE,		t_rdr},
	{KEYWORD,	"table",	NONE,		t_table},
	{KEYWORD,	"host",		NONE,		t_host},
	{KEYWORD,	"log",		NONE,		t_log},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show[] = {
	{KEYWORD,	"summary",	SHOW_SUM,	NULL},
	{KEYWORD,	"hosts",	SHOW_HOSTS,	NULL},
	{KEYWORD,	"redirects",	SHOW_RDRS,	NULL},
	{KEYWORD,	"relays",	SHOW_RELAYS,	NULL},
	{KEYWORD,	"routers",	SHOW_ROUTERS,	NULL},
	{KEYWORD,	"sessions",	SHOW_SESSIONS,	NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_rdr[] = {
	{NOTOKEN,	"",		NONE,		NULL},
	{KEYWORD,	"disable",	RDR_DISABLE,	t_rdr_id},
	{KEYWORD,	"enable",	RDR_ENABLE,	t_rdr_id},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_table[] = {
	{NOTOKEN,	"",		NONE,		NULL},
	{KEYWORD,	"disable",	TABLE_DISABLE,	t_table_id},
	{KEYWORD,	"enable",	TABLE_ENABLE,	t_table_id},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_host[] = {
	{NOTOKEN,	"",		NONE,		NULL},
	{KEYWORD,	"disable",	HOST_DISABLE,	t_host_id},
	{KEYWORD,	"enable",	HOST_ENABLE,	t_host_id},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_rdr_id[] = {
	{RDRID,		"",		NONE,		NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_table_id[] = {
	{TABLEID,	"",		NONE,		NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_host_id[] = {
	{HOSTID,	"",		NONE,		NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_log[] = {
	{KEYWORD,	"verbose",	LOG_VERBOSE,	NULL},
	{KEYWORD,	"brief",	LOG_BRIEF,	NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_load[] = {
	{PATH,		"",		NONE,		NULL},
	{ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token *match_token(const char *, const struct token *,
    struct parse_result *);
static void show_valid_args(const struct token *);

struct parse_result *
parse(int argc, char *argv[])
{
	static struct parse_result	res;
	const struct token	*table = t_main;
	const struct token	*match;

	bzero(&res, sizeof(res));

	while (argc >= 0) {
		if ((match = match_token(argv[0], table, &res)) == NULL) {
			fprintf(stderr, "valid commands/args:\n");
			show_valid_args(table);
			return (NULL);
		}

		argc--;
		argv++;

		if (match->type == NOTOKEN || match->next == NULL)
			break;

		table = match->next;
	}

	if (argc > 0) {
		fprintf(stderr, "superfluous argument: %s\n", argv[0]);
		return (NULL);
	}

	return (&res);
}

static const struct token *
match_token(const char *word, const struct token *table,
    struct parse_result *res)
{
	u_int			 i, match;
	const struct token	*t = NULL;
	const char		*errstr;

	match = 0;

	for (i = 0; table[i].type != ENDTOKEN; i++) {
		switch (table[i].type) {
		case NOTOKEN:
			if (word == NULL || strlen(word) == 0) {
				match++;
				t = &table[i];
			}
			break;
		case KEYWORD:
			if (word != NULL && strncmp(word, table[i].keyword,
			    strlen(word)) == 0) {
				match++;
				t = &table[i];
				if (t->value)
					res->action = t->value;
			}
			break;
		case HOSTID:
			if (word == NULL)
				break;
			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
			if (errstr) {
				strlcpy(res->id.name, word,
				    sizeof(res->id.name));
				res->id.id = EMPTY_ID;
			}
			t = &table[i];
			match++;
			break;
		case TABLEID:
			if (word == NULL)
				break;
			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
			if (errstr) {
				strlcpy(res->id.name, word,
				    sizeof(res->id.name));
				res->id.id = EMPTY_ID;
			}
			t = &table[i];
			match++;
			break;
		case RDRID:
			if (word == NULL)
				break;
			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
			if (errstr) {
				strlcpy(res->id.name, word,
				    sizeof(res->id.name));
				res->id.id = EMPTY_ID;
			}
			t = &table[i];
			match++;
			break;
		case PATH:
			if (!match && word != NULL && strlen(word) > 0) {
				res->path = strdup(word);
				match++;
				t = &table[i];
			}
			break;
		case ENDTOKEN:
			break;
		}
	}

	if (match != 1) {
		if (word == NULL)
			fprintf(stderr, "missing argument:\n");
		else if (match > 1)
			fprintf(stderr, "ambiguous argument: %s\n", word);
		else if (match < 1)
			fprintf(stderr, "unknown argument: %s\n", word);
		return (NULL);
	}

	return (t);
}

static void
show_valid_args(const struct token *table)
{
	int	i;

	for (i = 0; table[i].type != ENDTOKEN; i++) {
		switch (table[i].type) {
		case NOTOKEN:
			fprintf(stderr, "  <cr>\n");
			break;
		case KEYWORD:
			fprintf(stderr, "  %s\n", table[i].keyword);
			break;
		case RDRID:
			fprintf(stderr, "  <redirectid>\n");
			break;
		case TABLEID:
			fprintf(stderr, "  <tableid>\n");
			break;
		case HOSTID:
			fprintf(stderr, "  <hostid>\n");
			break;
		case PATH:
			fprintf(stderr, "  <path>\n");
			break;
		case ENDTOKEN:
			break;
		}
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: parser.c,v 1.27 2015/01/22 17:42:09 reyk Exp $ */
2
3			/*
4			* Copyright (c) 2006 Pierre-Yves Ritschard <pyr@openbsd.org>
5			* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
6			* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
7			*
8			* Permission to use, copy, modify, and distribute this software for any
9			* purpose with or without fee is hereby granted, provided that the above
10			* copyright notice and this permission notice appear in all copies.
11			*
12			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19			*/
20
21			#include <sys/types.h>
22
23			#include <limits.h>
24			#include <stdio.h>
25			#include <stdlib.h>
26			#include <string.h>
27
28			#include "relayd.h"
29			#include "parser.h"
30
31			enum token_type {
32			NOTOKEN,
33			ENDTOKEN,
34			HOSTID,
35			TABLEID,
36			RDRID,
37			KEYWORD,
38			PATH
39			};
40
41			struct token {
42			enum token_type type;
43			const char *keyword;
44			int value;
45			const struct token *next;
46			};
47
48			static const struct token t_main[];
49			static const struct token t_show[];
50			static const struct token t_rdr[];
51			static const struct token t_table[];
52			static const struct token t_host[];
53			static const struct token t_rdr_id[];
54			static const struct token t_table_id[];
55			static const struct token t_host_id[];
56			static const struct token t_log[];
57			static const struct token t_load[];
58
59			static const struct token t_main[] = {
60			{KEYWORD, "monitor", MONITOR, NULL},
61			{KEYWORD, "show", NONE, t_show},
62			{KEYWORD, "load", LOAD, t_load},
63			{KEYWORD, "poll", POLL, NULL},
64			{KEYWORD, "reload", RELOAD, NULL},
65			{KEYWORD, "stop", SHUTDOWN, NULL},
66			{KEYWORD, "redirect", NONE, t_rdr},
67			{KEYWORD, "table", NONE, t_table},
68			{KEYWORD, "host", NONE, t_host},
69			{KEYWORD, "log", NONE, t_log},
70			{ENDTOKEN, "", NONE, NULL}
71			};
72
73			static const struct token t_show[] = {
74			{KEYWORD, "summary", SHOW_SUM, NULL},
75			{KEYWORD, "hosts", SHOW_HOSTS, NULL},
76			{KEYWORD, "redirects", SHOW_RDRS, NULL},
77			{KEYWORD, "relays", SHOW_RELAYS, NULL},
78			{KEYWORD, "routers", SHOW_ROUTERS, NULL},
79			{KEYWORD, "sessions", SHOW_SESSIONS, NULL},
80			{ENDTOKEN, "", NONE, NULL}
81			};
82
83			static const struct token t_rdr[] = {
84			{NOTOKEN, "", NONE, NULL},
85			{KEYWORD, "disable", RDR_DISABLE, t_rdr_id},
86			{KEYWORD, "enable", RDR_ENABLE, t_rdr_id},
87			{ENDTOKEN, "", NONE, NULL}
88			};
89
90			static const struct token t_table[] = {
91			{NOTOKEN, "", NONE, NULL},
92			{KEYWORD, "disable", TABLE_DISABLE, t_table_id},
93			{KEYWORD, "enable", TABLE_ENABLE, t_table_id},
94			{ENDTOKEN, "", NONE, NULL}
95			};
96
97			static const struct token t_host[] = {
98			{NOTOKEN, "", NONE, NULL},
99			{KEYWORD, "disable", HOST_DISABLE, t_host_id},
100			{KEYWORD, "enable", HOST_ENABLE, t_host_id},
101			{ENDTOKEN, "", NONE, NULL}
102			};
103
104			static const struct token t_rdr_id[] = {
105			{RDRID, "", NONE, NULL},
106			{ENDTOKEN, "", NONE, NULL}
107			};
108
109			static const struct token t_table_id[] = {
110			{TABLEID, "", NONE, NULL},
111			{ENDTOKEN, "", NONE, NULL}
112			};
113
114			static const struct token t_host_id[] = {
115			{HOSTID, "", NONE, NULL},
116			{ENDTOKEN, "", NONE, NULL}
117			};
118
119			static const struct token t_log[] = {
120			{KEYWORD, "verbose", LOG_VERBOSE, NULL},
121			{KEYWORD, "brief", LOG_BRIEF, NULL},
122			{ENDTOKEN, "", NONE, NULL}
123			};
124
125			static const struct token t_load[] = {
126			{PATH, "", NONE, NULL},
127			{ENDTOKEN, "", NONE, NULL}
128			};
129
130			static const struct token match_token(const char , const struct token *,
131			struct parse_result *);
132			static void show_valid_args(const struct token *);
133
134			struct parse_result *
135			parse(int argc, char *argv[])
136			{
137			static struct parse_result res;
138			const struct token *table = t_main;
139			const struct token *match;
140
141			bzero(&res, sizeof(res));
142
143			while (argc >= 0) {
144			if ((match = match_token(argv[0], table, &res)) == NULL) {
145			fprintf(stderr, "valid commands/args:\n");
146			show_valid_args(table);
147			return (NULL);
148			}
149
150			argc--;
151			argv++;
152
153			if (match->type == NOTOKEN \|\| match->next == NULL)
154			break;
155
156			table = match->next;
157			}
158
159			if (argc > 0) {
160			fprintf(stderr, "superfluous argument: %s\n", argv[0]);
161			return (NULL);
162			}
163
164			return (&res);
165			}
166
167			static const struct token *
168			match_token(const char word, const struct token table,
169			struct parse_result *res)
170			{
171			u_int i, match;
172			const struct token *t = NULL;
173			const char *errstr;
174
175			match = 0;
176
177			for (i = 0; table[i].type != ENDTOKEN; i++) {
178			switch (table[i].type) {
179			case NOTOKEN:
180			if (word == NULL \|\| strlen(word) == 0) {
181			match++;
182			t = &table[i];
183			}
184			break;
185			case KEYWORD:
186			if (word != NULL && strncmp(word, table[i].keyword,
187			strlen(word)) == 0) {
188			match++;
189			t = &table[i];
190			if (t->value)
191			res->action = t->value;
192			}
193			break;
194			case HOSTID:
195			if (word == NULL)
196			break;
197			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
198			if (errstr) {
199			strlcpy(res->id.name, word,
200			sizeof(res->id.name));
201			res->id.id = EMPTY_ID;
202			}
203			t = &table[i];
204			match++;
205			break;
206			case TABLEID:
207			if (word == NULL)
208			break;
209			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
210			if (errstr) {
211			strlcpy(res->id.name, word,
212			sizeof(res->id.name));
213			res->id.id = EMPTY_ID;
214			}
215			t = &table[i];
216			match++;
217			break;
218			case RDRID:
219			if (word == NULL)
220			break;
221			res->id.id = strtonum(word, 0, UINT_MAX, &errstr);
222			if (errstr) {
223			strlcpy(res->id.name, word,
224			sizeof(res->id.name));
225			res->id.id = EMPTY_ID;
226			}
227			t = &table[i];
228			match++;
229			break;
230			case PATH:
231			if (!match && word != NULL && strlen(word) > 0) {
232			res->path = strdup(word);
233			match++;
234			t = &table[i];
235			}
236			break;
237			case ENDTOKEN:
238			break;
239			}
240			}
241
242			if (match != 1) {
243			if (word == NULL)
244			fprintf(stderr, "missing argument:\n");
245			else if (match > 1)
246			fprintf(stderr, "ambiguous argument: %s\n", word);
247			else if (match < 1)
248			fprintf(stderr, "unknown argument: %s\n", word);
249			return (NULL);
250			}
251
252			return (t);
253			}
254
255			static void
256			show_valid_args(const struct token *table)
257			{
258			int i;
259
260			for (i = 0; table[i].type != ENDTOKEN; i++) {
261			switch (table[i].type) {
262			case NOTOKEN:
263			fprintf(stderr, " <cr>\n");
264			break;
265			case KEYWORD:
266			fprintf(stderr, " %s\n", table[i].keyword);
267			break;
268			case RDRID:
269			fprintf(stderr, " <redirectid>\n");
270			break;
271			case TABLEID:
272			fprintf(stderr, " <tableid>\n");
273			break;
274			case HOSTID:
275			fprintf(stderr, " <hostid>\n");
276			break;
277			case PATH:
278			fprintf(stderr, " <path>\n");
279			break;
280			case ENDTOKEN:
281			break;
282			}
283			}
284			}