695 lines
17 KiB
C
695 lines
17 KiB
C
/*
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Copyright 1987, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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* Copyright 1990, 1991 Network Computing Devices;
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* Portions Copyright 1987 by Digital Equipment Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the names of Network Computing Devices,
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* or Digital not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Network Computing Devices, or Digital
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* make no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* NETWORK COMPUTING DEVICES, AND DIGITAL DISCLAIM ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES, OR DIGITAL BE
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* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <X11/Xtrans/Xtrans.h>
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#include <X11/Xos.h>
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#include "misc.h"
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#include "configstr.h"
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#include "osdep.h"
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#include "globals.h"
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#include "access.h"
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#include "difsutils.h"
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#include <X11/fonts/fontutil.h>
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#include "difs.h"
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/* libXfont/src/bitmap/snfstr.h */
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extern void SnfSetFormat(int bit, int byte, int glyph, int scan);
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static const char * const default_config_files[] = {
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#ifdef DEFAULT_CONFIG_FILE
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DEFAULT_CONFIG_FILE,
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#else
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"/usr/lib/X11/fs/config",
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#endif
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NULL
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};
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static char *font_catalogue = NULL;
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static char *config_set_int(ConfigOptionPtr parm, char *val);
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static char *config_set_bool(ConfigOptionPtr parm, char *val);
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static char *config_set_catalogue(ConfigOptionPtr parm, char *val);
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static char *config_set_glyph_caching_mode(ConfigOptionPtr parm, char *val);
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static char *config_set_list(ConfigOptionPtr parm, char *val);
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static char *config_set_file(ConfigOptionPtr parm, char *val);
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static char *config_set_resolutions(ConfigOptionPtr parm, char *val);
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static char *config_set_ignored_transports(ConfigOptionPtr parm, char *val);
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static char *config_set_snf_format(ConfigOptionPtr parm, char *val);
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/* these need to be in lower case and alphabetical order so a
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* binary search lookup can be used
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*/
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static ConfigOptionRec config_options[] = {
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{"alternate-servers", config_set_list},
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{"catalogue", config_set_catalogue},
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{"client-limit", config_set_int},
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{"clone-self", config_set_bool},
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{"default-point-size", config_set_int},
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{"default-resolutions", config_set_resolutions},
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{"deferglyphs", config_set_glyph_caching_mode},
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{"error-file", config_set_file},
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{"no-listen", config_set_ignored_transports},
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{"port", config_set_int},
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{"server-number", config_set_int},
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{"snf-format", config_set_snf_format},
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{"trusted-clients", config_set_list},
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{"use-syslog", config_set_bool},
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{NULL, NULL},
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};
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/* max size in bytes of config file */
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#define CONFIG_MAX_FILESIZE 32767
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#define CONFIG_ERR_MEMORY \
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"CONFIG: insufficient memory to load configuration file \"%s\"\n"
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#define CONFIG_ERR_OPEN "CONFIG: can't open configuration file \"%s\"\n"
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#define CONFIG_ERR_READ "CONFIG: error reading configuration file \"%s\"\n"
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#define CONFIG_ERR_VALUE "CONFIG: bad value \"%s\" for parameter \"%s\"\n"
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#define CONFIG_ERR_UNKNOWN "CONFIG: unknown parameter \"%s\"\n"
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#define CONFIG_ERR_NOEQUALS "CONFIG: missing '=' after parameter \"%s\"\n"
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#define CONFIG_ERR_RANGE "CONFIG: value out of range for parameter \"%s\"\n"
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#define CONFIG_ERR_SYNTAX "CONFIG: syntax error near parameter \"%s\"\n"
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#define CONFIG_ERR_NOVALUE "CONFIG: missing value for parameter \"%s\"\n"
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#define CONFIG_ERR_EXTRAVALUE "CONFIG: extra value for parameter \"%s\"\n"
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#define iseol(c) ((c) == '\n' || (c) == '\r' || (c) == '\f')
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#define skip_whitespace(c) while(isspace(*(c)) || *(c) == ',') (c)++;
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#define skip_val(c) while(!isspace(*(c)) && *(c) != ',' && *(c) != '\0')\
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(c) ++;
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#define skip_list_val(c) while(!isspace(*(c)) && *(c) != '\0')\
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(c) ++;
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#define blank_comment(c) while (!iseol(*(c)) && *(c) != '\0') \
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*(c)++= ' ';
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static char *
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next_assign(char *c)
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{
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int nesting = 0;
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while (*c != '\0') {
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if (*c == '(')
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nesting++;
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else if (*c == ')')
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nesting--;
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else if (*c == '=' && nesting == 0)
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return c;
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c++;
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}
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return (char *) 0;
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}
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static void
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strip_comments(char *data)
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{
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char *c;
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c = data;
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while ((c = strchr(c, '#')) != NULL) {
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if (c == data || *(c - 1) != '\\') {
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blank_comment(c);
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} else {
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c++;
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}
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}
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}
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static ConfigOptionPtr
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match_param_name(char *name)
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{
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int pos,
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rc,
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low,
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high;
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low = 0;
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high = sizeof(config_options) / sizeof(ConfigOptionRec) - 2;
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pos = high >> 1;
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while (low <= high) {
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rc = strcmp(name, config_options[pos].parm_name);
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if (rc == 0) {
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return &config_options[pos];
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} else if (rc < 0) {
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high = pos - 1;
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} else {
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low = pos + 1;
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}
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pos = ((high + low) >> 1);
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}
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return NULL;
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}
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static int
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parse_config(char *data)
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{
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char *c,
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*val = NULL,
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*next_eq,
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*consumed,
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*p;
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char param_name[64];
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Bool equals_missing;
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ConfigOptionPtr param;
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c = data;
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skip_whitespace(c);
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while (*c != '\0') {
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equals_missing = FALSE;
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/* get parm name in lower case */
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p = c;
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while (isalnum(*c) || *c == '-') {
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if (isupper(*c))
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*c = tolower(*c);
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c++;
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}
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memmove( param_name, p, min(sizeof(param_name), (int) (c - p)));
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param_name[(int) (c - p)] = '\0';
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/* check for junk */
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if (!isspace(*c) && *c != '=') {
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ErrorF(CONFIG_ERR_SYNTAX, param_name);
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/* eat garbage */
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while (!isspace(*c) && *c != '=' && *c != '\0')
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c++;
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}
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skip_whitespace(c);
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if (*c != '=') {
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ErrorF(CONFIG_ERR_NOEQUALS, param_name);
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equals_missing = TRUE;
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} else {
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c++;
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}
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skip_whitespace(c);
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/* find next assignment to guess where the value ends */
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if ((next_eq = next_assign(c)) != NULL) {
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/* back up over whitespace */
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for (val = next_eq - 1; val >= c &&
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(isspace(*val) || *val == ',');
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val--);
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/* back over parm name */
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for (; val >= c && (isalnum(*val) || *val == '-'); val--);
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if (val <= c) {
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/* no value, ignore */
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ErrorF(CONFIG_ERR_NOVALUE, param_name);
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continue;
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}
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*val = '\0';
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} else if (*c == '\0') {
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/* no value, ignore */
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ErrorF(CONFIG_ERR_NOVALUE, param_name);
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continue;
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}
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/* match parm name */
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if (equals_missing) {
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equals_missing = FALSE;
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} else if ((param = match_param_name(param_name)) == NULL) {
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ErrorF(CONFIG_ERR_UNKNOWN, param_name);
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} else {
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consumed = (param->set_func) (param, c);
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skip_whitespace(consumed);
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if (*consumed != '\0') {
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ErrorF(CONFIG_ERR_EXTRAVALUE,
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param_name);
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}
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}
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if (next_eq != NULL)
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c = val + 1;
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else /* last setting */
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break;
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}
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return FSSuccess;
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}
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/*
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* handles anything that should be set once the file is parsed
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*/
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void
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SetConfigValues(void)
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{
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int err,
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num;
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if (font_catalogue == NULL) {
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FatalError("font catalogue is missing/empty\n");
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}
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err = SetFontCatalogue(font_catalogue, &num);
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if (err != FSSuccess) {
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FatalError("element #%d (starting at 0) of font path is bad or has a bad font:\n\"%s\"\n",
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num, font_catalogue);
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}
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InitErrors();
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fsfree((char *) font_catalogue);
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font_catalogue = NULL;
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}
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#ifdef __UNIXOS2__
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char *__XFSRedirRoot(char *fname)
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{
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static char redirname[300]; /* enough for long filenames */
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char *root;
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/* if name does not start with /, assume it is not root-based */
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if (fname==0 || !(fname[0]=='/' || fname[0]=='\\'))
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return fname;
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root = (char*)getenv("X11ROOT");
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if (root==0 ||
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(fname[1]==':' && isalpha(fname[0])) ||
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((strlen(fname)+strlen(root)+2) > 300))
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return fname;
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sprintf(redirname,"%s%s",root,fname);
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return redirname;
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}
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#endif
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/* If argument is NULL, uses first file found from default_config_files */
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int
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ReadConfigFile(const char *filename)
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{
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FILE *fp = NULL;
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int ret;
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int len;
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int i;
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char *data;
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data = (char *) fsalloc(CONFIG_MAX_FILESIZE);
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if (!data) {
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ErrorF(CONFIG_ERR_MEMORY, filename);
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return FSBadAlloc;
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}
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if (filename != NULL) {
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#ifdef __UNIXOS2__
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filename = __XFSRedirRoot(filename);
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#endif
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fp = fopen(filename, "r");
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if (fp == NULL) {
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ErrorF(CONFIG_ERR_OPEN, filename);
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}
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} else {
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for (i = 0; default_config_files[i] != NULL; i++) {
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filename = default_config_files[i];
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#ifdef __UNIXOS2__
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filename = __XFSRedirRoot(filename);
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#endif
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if ((fp = fopen(filename, "r")) != NULL) {
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if (configfilename == NULL) {
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configfilename = strdup(filename); /* save for clones */
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}
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break;
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}
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}
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if (fp == NULL) {
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for (i = 0; default_config_files[i] != NULL; i++) {
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ErrorF(CONFIG_ERR_OPEN, default_config_files[i]);
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}
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}
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}
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if (fp == NULL) {
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fsfree(data);
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return FSBadName;
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}
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ret = fread(data, sizeof(char), CONFIG_MAX_FILESIZE, fp);
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if (ret <= 0) {
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fsfree(data);
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(void) fclose(fp);
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ErrorF(CONFIG_ERR_READ, filename);
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return FSBadName;
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}
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len = ftell(fp);
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len = min(len, CONFIG_MAX_FILESIZE);
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data[len] = '\0'; /* NULL terminate the data */
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(void) fclose(fp);
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strip_comments(data);
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ret = parse_config(data);
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fsfree(data);
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return ret;
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}
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struct nameVal {
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const char *name;
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int val;
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};
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static char *
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config_parse_nameVal (
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ConfigOptionPtr parm,
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char *c,
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int *ret,
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int *pval,
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struct nameVal *name_val)
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{
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char *start,
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t;
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int i,
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len;
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start = c;
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skip_val(c);
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t = *c;
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*c = '\0';
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len = c - start;
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for (i = 0; name_val[i].name; i++) {
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if (!strncmpnocase(start, name_val[i].name, len)) {
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*pval = name_val[i].val;
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*ret = 0;
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*c = t;
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return c;
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}
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}
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ErrorF(CONFIG_ERR_VALUE, start, parm->parm_name);
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*c = t;
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*ret = -1;
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return c;
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}
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static char *
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config_parse_bool (
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ConfigOptionPtr parm,
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char *c,
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int *ret,
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Bool *pval)
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{
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static struct nameVal bool_val[] = {
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{ "yes", TRUE },
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{ "on", TRUE },
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{ "1", TRUE },
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{ "true", TRUE },
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{ "no", FALSE },
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{ "off", FALSE },
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{ "0", FALSE },
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{ "false", FALSE },
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{ (char *) 0, 0 },
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};
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return config_parse_nameVal (parm, c, ret, pval, bool_val);
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}
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static char *
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config_parse_int(
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ConfigOptionPtr parm,
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char *c,
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int *ret,
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int *pval)
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{
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char *start,
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t;
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start = c;
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while (*c != '\0' && !isspace(*c) && *c != ',') {
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if (!isdigit(*c)) { /* error */
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skip_val(c);
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t = *c;
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*c = '\0';
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ErrorF(CONFIG_ERR_VALUE, start, parm->parm_name);
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*ret = -1;
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*c = t;
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return c;
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}
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c++;
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}
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t = *c;
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*c = '\0';
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*ret = 0;
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*pval = atoi(start);
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*c = t;
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return c;
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}
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/* config option sets */
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/* these have to know how to do the real work and tweak the proper things */
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static char *
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config_set_int(
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ConfigOptionPtr parm,
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char *val)
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{
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int ival,
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ret;
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val = config_parse_int(parm, val, &ret, &ival);
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if (ret == -1)
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return val;
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/* now do individual attribute checks */
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if (!strcmp(parm->parm_name, "port") && !portFromCmdline) {
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ListenPort = ival;
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} else if (!strcmp(parm->parm_name, "client-limit")) {
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AccessSetConnectionLimit(ival);
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} else if (!strcmp(parm->parm_name, "default-point-size")) {
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SetDefaultPointSize(ival);
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}
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return val;
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}
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static char *
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config_set_bool(
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ConfigOptionPtr parm,
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char *val)
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{
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int
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ret;
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Bool bval;
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val = config_parse_bool(parm, val, &ret, &bval);
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if (ret == -1)
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return val;
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/* now do individual attribute checks */
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if (!strcmp(parm->parm_name, "use-syslog")) {
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UseSyslog = bval;
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} else if (!strcmp(parm->parm_name, "clone-self")) {
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CloneSelf = bval;
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}
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return val;
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}
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static char *
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config_set_file(
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ConfigOptionPtr parm,
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char *val)
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{
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char *start = val,
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t;
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skip_val(val);
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t = *val;
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*val = '\0';
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if (!strcmp(parm->parm_name, "error-file")) {
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#ifndef __UNIXOS2__
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memmove( ErrorFile, start, val - start + 1);
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#else
|
|
strcpy( ErrorFile, __XFSRedirRoot(start));
|
|
#endif
|
|
}
|
|
*val = t;
|
|
return val;
|
|
}
|
|
|
|
static char *
|
|
config_set_catalogue(
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
char *b;
|
|
|
|
if (!strcmp(parm->parm_name, "catalogue")) {
|
|
/* stash it for later */
|
|
fsfree((char *) font_catalogue); /* dump any previous one */
|
|
b = font_catalogue = (char *) fsalloc(strlen(val) + 1);
|
|
if (!font_catalogue)
|
|
FatalError("insufficent memory for font catalogue\n");
|
|
while (*val) { /* remove all the gunk */
|
|
if (!isspace(*val)) {
|
|
*b++ = *val;
|
|
}
|
|
val++;
|
|
}
|
|
*b = '\0';
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static char *
|
|
config_set_list(
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
char *start = val,
|
|
t;
|
|
|
|
skip_list_val(val);
|
|
t = *val;
|
|
*val = '\0';
|
|
if (!strcmp(parm->parm_name, "alternate-servers")) {
|
|
SetAlternateServers(start);
|
|
}
|
|
*val = t;
|
|
return val;
|
|
}
|
|
|
|
static char *
|
|
config_set_ignored_transports(
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
char *start = val,
|
|
t;
|
|
|
|
skip_list_val(val);
|
|
t = *val;
|
|
*val = '\0';
|
|
_FontTransNoListen(start);
|
|
*val = t;
|
|
return val;
|
|
}
|
|
|
|
static char *
|
|
config_set_glyph_caching_mode(
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
char *start = val,
|
|
t;
|
|
|
|
skip_list_val(val);
|
|
t = *val;
|
|
*val = '\0';
|
|
if (!strcmp(parm->parm_name, "deferglyphs")) {
|
|
ParseGlyphCachingMode(start);
|
|
}
|
|
*val = t;
|
|
return val;
|
|
}
|
|
|
|
static char *
|
|
config_set_resolutions(
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
char *start = val,
|
|
t;
|
|
int err;
|
|
|
|
skip_list_val(val);
|
|
t = *val;
|
|
*val = '\0';
|
|
if (!strcmp(parm->parm_name, "default-resolutions")) {
|
|
err = SetDefaultResolutions(start);
|
|
if (err != FSSuccess) {
|
|
FatalError("bogus resolution list \"%s\"\n", start);
|
|
}
|
|
}
|
|
*val = t;
|
|
return val;
|
|
}
|
|
|
|
|
|
static char *
|
|
config_parse_endian(
|
|
ConfigOptionPtr parm,
|
|
char *c,
|
|
int *ret,
|
|
int *pval)
|
|
{
|
|
static struct nameVal endian_val[] = {
|
|
{ "lsb", LSBFirst },
|
|
{ "little", LSBFirst },
|
|
{ "lsbfirst", LSBFirst },
|
|
{ "msb", MSBFirst },
|
|
{ "big", MSBFirst },
|
|
{ "msbfirst", MSBFirst },
|
|
{ (char *) 0, 0 },
|
|
};
|
|
return config_parse_nameVal (parm, c, ret, pval, endian_val);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static char *
|
|
config_set_snf_format (
|
|
ConfigOptionPtr parm,
|
|
char *val)
|
|
{
|
|
int bit, byte, glyph, scan;
|
|
int ret;
|
|
|
|
val = config_parse_endian (parm, val, &ret, &bit);
|
|
if (ret == -1)
|
|
return val;
|
|
skip_whitespace (val);
|
|
val = config_parse_endian (parm, val, &ret, &byte);
|
|
if (ret == -1)
|
|
return val;
|
|
skip_whitespace (val);
|
|
val = config_parse_int (parm, val, &ret, &glyph);
|
|
if (ret == -1)
|
|
return val;
|
|
skip_whitespace (val);
|
|
val = config_parse_int (parm, val, &ret, &scan);
|
|
if (ret == -1)
|
|
return val;
|
|
SnfSetFormat (bit, byte, glyph, scan);
|
|
return val;
|
|
}
|