OpenSolaris_b135/cmd/nscd/nscd_cfgfile.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* routine to read configuration file
*
*/
#include "nscd_config.h"
#include "nscd_log.h"
#include <locale.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
static int
strbreak(char *field[], int array_size, char *s, char *sep)
{
int i;
char *lasts, *qp;
int inquote;
qp = strchr(s, '"');
for (i = 0; i < array_size && (field[i] = strtok_r((i?(char *)NULL:s),
sep, &lasts)); i++) {
/* empty */
}
if (qp == NULL)
return (i);
inquote = 1;
while (++qp < lasts) {
switch (*qp) {
case '"':
inquote = (inquote == 0);
break;
case '\\':
/* escape " */
if (inquote == 1 && *(qp + 1) == '"')
qp++;
break;
case '\0':
if (inquote == 1) {
*qp = ' ';
i--;
}
break;
}
}
return (i);
}
nscd_rc_t
_nscd_cfg_read_file(
char *filename,
nscd_cfg_error_t **errorp)
{
char *me = "_nscd_cfg_read_file";
FILE *in;
char buffer[255];
char *fields [128];
int linecnt;
int fieldcnt;
nscd_rc_t rc = NSCD_SUCCESS;
nscd_cfg_handle_t *h = NULL;
nscd_cfg_param_desc_t *pdesc;
char *dbname, *str;
void *data_p;
int i;
char msg[NSCD_CFG_MAX_ERR_MSG_LEN];
union {
int i;
char data[256];
} u;
if ((in = fopen(filename, "r")) == NULL) {
(void) snprintf(msg, sizeof (msg),
gettext("open of configuration file \"%s\" failed: %s"),
filename, strerror(errno));
if (errorp != NULL)
*errorp = _nscd_cfg_make_error(
NSCD_CFG_FILE_OPEN_ERROR, msg);
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", msg);
return (NSCD_CFG_FILE_OPEN_ERROR);
}
linecnt = 0;
msg[0] = '\0';
while (fgets(buffer, sizeof (buffer), in) != NULL) {
linecnt++;
if ((fieldcnt = strbreak(fields, 128, buffer, " \t\n")) ==
0 || *fields[0] == '#') {
/* skip blank or comment lines */
continue;
}
switch (fieldcnt) {
case 2:
dbname = NULL;
str = fields[1];
break;
case 3:
dbname = fields[1];
str = fields[2];
break;
default:
(void) strlcpy(u.data, fields[0], sizeof (u.data));
for (i = 1; i < fieldcnt; i++) {
(void) strlcat(u.data, " ",
sizeof (u.data));
(void) strlcat(u.data, fields[i],
sizeof (u.data));
}
(void) snprintf(msg, sizeof (msg),
gettext("Syntax error: line %d of configuration "
"file: %s : \"%s\""), linecnt, filename, u.data);
if (errorp != NULL)
*errorp = _nscd_cfg_make_error(
NSCD_CFG_SYNTAX_ERROR, msg);
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", msg);
rc = NSCD_CFG_SYNTAX_ERROR;
break;
}
if (rc != NSCD_SUCCESS)
break;
rc = _nscd_cfg_get_handle(fields[0], dbname, &h, errorp);
if (rc != NSCD_SUCCESS)
break;
pdesc = _nscd_cfg_get_desc(h);
/* convert string to data */
rc = _nscd_cfg_str_to_data(pdesc, str, &u.data,
&data_p, errorp);
if (rc != NSCD_SUCCESS)
break;
/* do preliminary check based on data type */
rc = _nscd_cfg_prelim_check(pdesc, data_p, errorp);
if (rc != NSCD_SUCCESS)
break;
rc = _nscd_cfg_set_linked(h, data_p, errorp);
_nscd_cfg_free_handle(h);
h = NULL;
if (rc != NSCD_CFG_READ_ONLY && rc != NSCD_SUCCESS)
break;
else {
_nscd_cfg_free_error(*errorp);
*errorp = NULL;
}
}
/* NSCD_CFG_READ_ONLY is not fatal */
if (rc == NSCD_CFG_READ_ONLY)
rc = NSCD_SUCCESS;
if (h != NULL)
_nscd_cfg_free_handle(h);
(void) fclose(in);
if (msg[0] == '\0' && rc != NSCD_SUCCESS) {
if (errorp != NULL)
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", NSCD_ERR2MSG(*errorp));
}
return (rc);
}
nscd_rc_t
_nscd_cfg_read_nsswitch_file(
char *filename,
nscd_cfg_error_t **errorp)
{
char *me = "_nscd_cfg_read_nsswitch_file";
char *pname = "nsw-config-string";
FILE *in;
char buffer[255];
char *cc, *ce, *ce1, *c1, *c2;
char *db, *dbe;
char *nsscfg;
int syntax_err;
int linecnt;
nscd_rc_t rc = NSCD_SUCCESS;
nscd_cfg_handle_t *h = NULL;
nscd_cfg_param_desc_t *pdesc;
void *data_p;
char msg[NSCD_CFG_MAX_ERR_MSG_LEN];
union {
int i;
char data[256];
} u;
if ((in = fopen(filename, "r")) == NULL) {
(void) snprintf(msg, sizeof (msg),
gettext("open of configuration file \"%s\" failed: %s"),
filename, strerror(errno));
if (errorp != NULL)
*errorp = _nscd_cfg_make_error(
NSCD_CFG_FILE_OPEN_ERROR, msg);
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", msg);
return (NSCD_CFG_FILE_OPEN_ERROR);
}
linecnt = 0;
msg[0] = '\0';
while (fgets(buffer, sizeof (buffer), in) != NULL) {
linecnt++;
syntax_err = 0;
/* skip blank or comment lines */
if (buffer[0] == '#' || buffer[0] == '\n')
continue;
/* skip end of line comment */
if ((ce = strchr(buffer, '\n')) != NULL)
*ce = '\0';
else
ce = &buffer[255];
if ((ce1 = strchr(buffer, '#')) != NULL) {
ce = ce1;
*ce = '\0';
}
if ((cc = strchr(buffer, ':')) == NULL) {
c1 = buffer;
while (isalpha(*c1) && c1 < ce)
c1++;
if (c1 > ce)
syntax_err = 1;
else /* blank line */
continue;
} else {
/*
* data name goes before ':',
* skip spaces on both ends
*/
c2 = cc - 1;
while (buffer <= c2 && isspace(*c2))
c2--;
c1 = buffer;
while (c1 <= cc && isspace(*c1))
c1++;
if (c1 > c2)
syntax_err = 1;
else {
db = c1;
dbe = c2 + 1;
/*
* nss config goes after ':',
* skip spaces on both ends
*/
c1 = cc + 1;
while (c1 <= ce && isspace(*c1))
c1++;
c2 = ce - 1;
while (cc <= c2 && isspace(*c2))
c2--;
if (c1 > c2) {
/* no source specified, it's OK */
continue;
} else {
*dbe = '\0';
nsscfg = c1;
*(c2 + 1) = '\0';
}
}
}
if (syntax_err == 1) {
(void) snprintf(msg, sizeof (msg),
gettext("Syntax error: line %d of configuration "
"file: %s : \"%s\""), linecnt, filename, buffer);
if (errorp != NULL)
*errorp = _nscd_cfg_make_error(
NSCD_CFG_SYNTAX_ERROR, msg);
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", msg);
rc = NSCD_CFG_SYNTAX_ERROR;
return (rc);
}
rc = _nscd_cfg_get_handle(pname, db, &h, errorp);
if (rc != NSCD_SUCCESS) {
/* ignore unsupported switch database */
if (rc == NSCD_CFG_UNSUPPORTED_SWITCH_DB) {
_nscd_cfg_free_error(*errorp);
*errorp = NULL;
rc = NSCD_SUCCESS;
continue;
}
break;
}
pdesc = _nscd_cfg_get_desc(h);
/* convert string to data */
rc = _nscd_cfg_str_to_data(pdesc, nsscfg, &u.data,
&data_p, errorp);
if (rc != NSCD_SUCCESS)
break;
/* do preliminary check based on data type */
rc = _nscd_cfg_prelim_check(pdesc, data_p, errorp);
if (rc != NSCD_SUCCESS)
break;
rc = _nscd_cfg_set_linked(h, data_p, errorp);
_nscd_cfg_free_handle(h);
h = NULL;
if (rc != NSCD_CFG_READ_ONLY && rc != NSCD_SUCCESS)
break;
else {
_nscd_cfg_free_error(*errorp);
*errorp = NULL;
}
}
/* NSCD_CFG_READ_ONLY is not fatal */
if (rc == NSCD_CFG_READ_ONLY)
rc = NSCD_SUCCESS;
if (h != NULL)
_nscd_cfg_free_handle(h);
(void) fclose(in);
if (msg[0] == '\0' && rc != NSCD_SUCCESS) {
if (errorp != NULL)
_NSCD_LOG(NSCD_LOG_CONFIG, NSCD_LOG_LEVEL_ERROR)
(me, "%s\n", NSCD_ERR2MSG(*errorp));
}
return (rc);
}