| Current Path : /usr/src/contrib/ntp/libopts/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/ntp/libopts/configfile.c |
/*
* $Id: configfile.c,v 1.21 2007/04/15 19:01:18 bkorb Exp $
* Time-stamp: "2007-04-15 11:22:46 bkorb"
*
* configuration/rc/ini file handling.
*/
/*
* Automated Options copyright 1992-2007 Bruce Korb
*
* Automated Options is free software.
* You may redistribute it and/or modify it under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2, or (at your option) any later version.
*
* Automated Options is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Automated Options. See the file "COPYING". If not,
* write to: The Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* As a special exception, Bruce Korb gives permission for additional
* uses of the text contained in his release of AutoOpts.
*
* The exception is that, if you link the AutoOpts library with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the AutoOpts library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by Bruce Korb under
* the name AutoOpts. If you copy code from other sources under the
* General Public License into a copy of AutoOpts, as the General Public
* License permits, the exception does not apply to the code that you add
* in this way. To avoid misleading anyone as to the status of such
* modified files, you must delete this exception notice from them.
*
* If you write modifications of your own for AutoOpts, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
/* = = = START-STATIC-FORWARD = = = */
/* static forward declarations maintained by :mkfwd */
static void
filePreset(
tOptions* pOpts,
char const* pzFileName,
int direction );
static char*
handleComment( char* pzText );
static char*
handleConfig(
tOptions* pOpts,
tOptState* pOS,
char* pzText,
int direction );
static char*
handleDirective(
tOptions* pOpts,
char* pzText );
static char*
handleProgramSection(
tOptions* pOpts,
char* pzText );
static char*
handleStructure(
tOptions* pOpts,
tOptState* pOS,
char* pzText,
int direction );
static char*
parseKeyWordType(
tOptions* pOpts,
char* pzText,
tOptionValue* pType );
static char*
parseLoadMode(
char* pzText,
tOptionLoadMode* pMode );
static char*
parseSetMemType(
tOptions* pOpts,
char* pzText,
tOptionValue* pType );
static char*
parseValueType(
char* pzText,
tOptionValue* pType );
static char*
skipUnknown( char* pzText );
/* = = = END-STATIC-FORWARD = = = */
/*=export_func configFileLoad
*
* what: parse a configuration file
* arg: + char const* + pzFile + the file to load +
*
* ret_type: const tOptionValue*
* ret_desc: An allocated, compound value structure
*
* doc:
* This routine will load a named configuration file and parse the
* text as a hierarchically valued option. The option descriptor
* created from an option definition file is not used via this interface.
* The returned value is "named" with the input file name and is of
* type "@code{OPARG_TYPE_HIERARCHY}". It may be used in calls to
* @code{optionGetValue()}, @code{optionNextValue()} and
* @code{optionUnloadNested()}.
*
* err:
* If the file cannot be loaded or processed, @code{NULL} is returned and
* @var{errno} is set. It may be set by a call to either @code{open(2)}
* @code{mmap(2)} or other file system calls, or it may be:
* @itemize @bullet
* @item
* @code{ENOENT} - the file was empty.
* @item
* @code{EINVAL} - the file contents are invalid -- not properly formed.
* @item
* @code{ENOMEM} - not enough memory to allocate the needed structures.
* @end itemize
=*/
const tOptionValue*
configFileLoad( char const* pzFile )
{
tmap_info_t cfgfile;
tOptionValue* pRes = NULL;
tOptionLoadMode save_mode = option_load_mode;
char* pzText =
text_mmap( pzFile, PROT_READ, MAP_PRIVATE, &cfgfile );
if (TEXT_MMAP_FAILED_ADDR(pzText))
return NULL; /* errno is set */
option_load_mode = OPTION_LOAD_COOKED;
pRes = optionLoadNested(pzText, pzFile, strlen(pzFile));
if (pRes == NULL) {
int err = errno;
text_munmap( &cfgfile );
errno = err;
} else
text_munmap( &cfgfile );
option_load_mode = save_mode;
return pRes;
}
/*=export_func optionFindValue
*
* what: find a hierarcicaly valued option instance
* arg: + const tOptDesc* + pOptDesc + an option with a nested arg type +
* arg: + char const* + name + name of value to find +
* arg: + char const* + value + the matching value +
*
* ret_type: const tOptionValue*
* ret_desc: a compound value structure
*
* doc:
* This routine will find an entry in a nested value option or configurable.
* It will search through the list and return a matching entry.
*
* err:
* The returned result is NULL and errno is set:
* @itemize @bullet
* @item
* @code{EINVAL} - the @code{pOptValue} does not point to a valid
* hierarchical option value.
* @item
* @code{ENOENT} - no entry matched the given name.
* @end itemize
=*/
const tOptionValue*
optionFindValue( const tOptDesc* pOptDesc,
char const* pzName, char const* pzVal )
{
const tOptionValue* pRes = NULL;
if ( (pOptDesc == NULL)
|| (OPTST_GET_ARGTYPE(pOptDesc->fOptState) != OPARG_TYPE_HIERARCHY)) {
errno = EINVAL;
}
else if (pOptDesc->optCookie == NULL) {
errno = ENOENT;
}
else do {
tArgList* pAL = pOptDesc->optCookie;
int ct = pAL->useCt;
void** ppOV = (void**)(pAL->apzArgs);
if (ct == 0) {
errno = ENOENT;
break;
}
if (pzName == NULL) {
pRes = (tOptionValue*)*ppOV;
break;
}
while (--ct >= 0) {
const tOptionValue* pOV = *(ppOV++);
const tOptionValue* pRV = optionGetValue( pOV, pzName );
if (pRV == NULL)
continue;
if (pzVal == NULL) {
pRes = pOV;
break;
}
}
if (pRes == NULL)
errno = ENOENT;
} while (0);
return pRes;
}
/*=export_func optionFindNextValue
*
* what: find a hierarcicaly valued option instance
* arg: + const tOptDesc* + pOptDesc + an option with a nested arg type +
* arg: + const tOptionValue* + pPrevVal + the last entry +
* arg: + char const* + name + name of value to find +
* arg: + char const* + value + the matching value +
*
* ret_type: const tOptionValue*
* ret_desc: a compound value structure
*
* doc:
* This routine will find the next entry in a nested value option or
* configurable. It will search through the list and return the next entry
* that matches the criteria.
*
* err:
* The returned result is NULL and errno is set:
* @itemize @bullet
* @item
* @code{EINVAL} - the @code{pOptValue} does not point to a valid
* hierarchical option value.
* @item
* @code{ENOENT} - no entry matched the given name.
* @end itemize
=*/
const tOptionValue*
optionFindNextValue( const tOptDesc* pOptDesc, const tOptionValue* pPrevVal,
char const* pzName, char const* pzVal )
{
int foundOldVal = 0;
tOptionValue* pRes = NULL;
if ( (pOptDesc == NULL)
|| (OPTST_GET_ARGTYPE(pOptDesc->fOptState) != OPARG_TYPE_HIERARCHY)) {
errno = EINVAL;
}
else if (pOptDesc->optCookie == NULL) {
errno = ENOENT;
}
else do {
tArgList* pAL = pOptDesc->optCookie;
int ct = pAL->useCt;
void** ppOV = (void**)pAL->apzArgs;
if (ct == 0) {
errno = ENOENT;
break;
}
while (--ct >= 0) {
tOptionValue* pOV = *(ppOV++);
if (foundOldVal) {
pRes = pOV;
break;
}
if (pOV == pPrevVal)
foundOldVal = 1;
}
if (pRes == NULL)
errno = ENOENT;
} while (0);
return pRes;
}
/*=export_func optionGetValue
*
* what: get a specific value from a hierarcical list
* arg: + const tOptionValue* + pOptValue + a hierarchcal value +
* arg: + char const* + valueName + name of value to get +
*
* ret_type: const tOptionValue*
* ret_desc: a compound value structure
*
* doc:
* This routine will find an entry in a nested value option or configurable.
* If "valueName" is NULL, then the first entry is returned. Otherwise,
* the first entry with a name that exactly matches the argument will be
* returned.
*
* err:
* The returned result is NULL and errno is set:
* @itemize @bullet
* @item
* @code{EINVAL} - the @code{pOptValue} does not point to a valid
* hierarchical option value.
* @item
* @code{ENOENT} - no entry matched the given name.
* @end itemize
=*/
const tOptionValue*
optionGetValue( const tOptionValue* pOld, char const* pzValName )
{
tArgList* pAL;
tOptionValue* pRes = NULL;
if ((pOld == NULL) || (pOld->valType != OPARG_TYPE_HIERARCHY)) {
errno = EINVAL;
return NULL;
}
pAL = pOld->v.nestVal;
if (pAL->useCt > 0) {
int ct = pAL->useCt;
void** papOV = (void**)(pAL->apzArgs);
if (pzValName == NULL) {
pRes = (tOptionValue*)*papOV;
}
else do {
tOptionValue* pOV = *(papOV++);
if (strcmp( pOV->pzName, pzValName ) == 0) {
pRes = pOV;
break;
}
} while (--ct > 0);
}
if (pRes == NULL)
errno = ENOENT;
return pRes;
}
/*=export_func optionNextValue
*
* what: get the next value from a hierarchical list
* arg: + const tOptionValue* + pOptValue + a hierarchcal list value +
* arg: + const tOptionValue* + pOldValue + a value from this list +
*
* ret_type: const tOptionValue*
* ret_desc: a compound value structure
*
* doc:
* This routine will return the next entry after the entry passed in. At the
* end of the list, NULL will be returned. If the entry is not found on the
* list, NULL will be returned and "@var{errno}" will be set to EINVAL.
* The "@var{pOldValue}" must have been gotten from a prior call to this
* routine or to "@code{opitonGetValue()}".
*
* err:
* The returned result is NULL and errno is set:
* @itemize @bullet
* @item
* @code{EINVAL} - the @code{pOptValue} does not point to a valid
* hierarchical option value or @code{pOldValue} does not point to a
* member of that option value.
* @item
* @code{ENOENT} - the supplied @code{pOldValue} pointed to the last entry.
* @end itemize
=*/
tOptionValue const *
optionNextValue(tOptionValue const * pOVList,tOptionValue const * pOldOV )
{
tArgList* pAL;
tOptionValue* pRes = NULL;
int err = EINVAL;
if ((pOVList == NULL) || (pOVList->valType != OPARG_TYPE_HIERARCHY)) {
errno = EINVAL;
return NULL;
}
pAL = pOVList->v.nestVal;
{
int ct = pAL->useCt;
void** papNV = (void**)(pAL->apzArgs);
while (ct-- > 0) {
tOptionValue* pNV = *(papNV++);
if (pNV == pOldOV) {
if (ct == 0) {
err = ENOENT;
} else {
err = 0;
pRes = (tOptionValue*)*papNV;
}
break;
}
}
}
if (err != 0)
errno = err;
return pRes;
}
/* filePreset
*
* Load a file containing presetting information (a configuration file).
*/
static void
filePreset(
tOptions* pOpts,
char const* pzFileName,
int direction )
{
tmap_info_t cfgfile;
tOptState st = OPTSTATE_INITIALIZER(PRESET);
char* pzFileText =
text_mmap( pzFileName, PROT_READ|PROT_WRITE, MAP_PRIVATE, &cfgfile );
if (TEXT_MMAP_FAILED_ADDR(pzFileText))
return;
if (direction == DIRECTION_CALLED) {
st.flags = OPTST_DEFINED;
direction = DIRECTION_PROCESS;
}
/*
* IF this is called via "optionProcess", then we are presetting.
* This is the default and the PRESETTING bit will be set.
* If this is called via "optionFileLoad", then the bit is not set
* and we consider stuff set herein to be "set" by the client program.
*/
if ((pOpts->fOptSet & OPTPROC_PRESETTING) == 0)
st.flags = OPTST_SET;
do {
while (isspace( (int)*pzFileText )) pzFileText++;
if (isalpha( (int)*pzFileText )) {
pzFileText = handleConfig( pOpts, &st, pzFileText, direction );
} else switch (*pzFileText) {
case '<':
if (isalpha( (int)pzFileText[1] ))
pzFileText = handleStructure(pOpts, &st, pzFileText, direction);
else switch (pzFileText[1]) {
case '?':
pzFileText = handleDirective( pOpts, pzFileText );
break;
case '!':
pzFileText = handleComment( pzFileText );
break;
case '/':
pzFileText = strchr( pzFileText+2, '>' );
if (pzFileText++ != NULL)
break;
default:
goto all_done;
}
break;
case '[':
pzFileText = handleProgramSection( pOpts, pzFileText );
break;
case '#':
pzFileText = strchr( pzFileText+1, '\n' );
break;
default:
goto all_done; /* invalid format */
}
} while (pzFileText != NULL);
all_done:
text_munmap( &cfgfile );
}
/* handleComment
*
* "pzText" points to a "<!" sequence.
* Theoretically, we should ensure that it begins with "<!--",
* but actually I don't care that much. It ends with "-->".
*/
static char*
handleComment( char* pzText )
{
char* pz = strstr( pzText, "-->" );
if (pz != NULL)
pz += 3;
return pz;
}
/* handleConfig
*
* "pzText" points to the start of some value name.
* The end of the entry is the end of the line that is not preceded by
* a backslash escape character. The string value is always processed
* in "cooked" mode.
*/
static char*
handleConfig(
tOptions* pOpts,
tOptState* pOS,
char* pzText,
int direction )
{
char* pzName = pzText++;
char* pzEnd = strchr( pzText, '\n' );
if (pzEnd == NULL)
return pzText + strlen(pzText);
while (ISNAMECHAR( (int)*pzText )) pzText++;
while (isspace( (int)*pzText )) pzText++;
if (pzText > pzEnd) {
name_only:
*pzEnd++ = NUL;
loadOptionLine( pOpts, pOS, pzName, direction, OPTION_LOAD_UNCOOKED );
return pzEnd;
}
/*
* Either the first character after the name is a ':' or '=',
* or else we must have skipped over white space. Anything else
* is an invalid format and we give up parsing the text.
*/
if ((*pzText == '=') || (*pzText == ':')) {
while (isspace( (int)*++pzText )) ;
if (pzText > pzEnd)
goto name_only;
} else if (! isspace((int)pzText[-1]))
return NULL;
/*
* IF the value is continued, remove the backslash escape and push "pzEnd"
* on to a newline *not* preceded by a backslash.
*/
if (pzEnd[-1] == '\\') {
char* pcD = pzEnd-1;
char* pcS = pzEnd;
for (;;) {
char ch = *(pcS++);
switch (ch) {
case NUL:
pcS = NULL;
case '\n':
*pcD = NUL;
pzEnd = pcS;
goto copy_done;
case '\\':
if (*pcS == '\n') {
ch = *(pcS++);
}
/* FALLTHROUGH */
default:
*(pcD++) = ch;
}
} copy_done:;
} else {
/*
* The newline was not preceded by a backslash. NUL it out
*/
*(pzEnd++) = NUL;
}
/*
* "pzName" points to what looks like text for one option/configurable.
* It is NUL terminated. Process it.
*/
loadOptionLine( pOpts, pOS, pzName, direction, OPTION_LOAD_UNCOOKED );
return pzEnd;
}
/* handleDirective
*
* "pzText" points to a "<?" sequence.
* For the moment, we only handle "<?program" directives.
*/
static char*
handleDirective(
tOptions* pOpts,
char* pzText )
{
char ztitle[32] = "<?";
size_t title_len = strlen( zProg );
size_t name_len;
if ( (strncmp( pzText+2, zProg, title_len ) != 0)
|| (! isspace( (int)pzText[title_len+2] )) ) {
pzText = strchr( pzText+2, '>' );
if (pzText != NULL)
pzText++;
return pzText;
}
name_len = strlen( pOpts->pzProgName );
strcpy( ztitle+2, zProg );
title_len += 2;
do {
pzText += title_len;
if (isspace((int)*pzText)) {
while (isspace((int)*pzText)) pzText++;
if ( (strneqvcmp( pzText, pOpts->pzProgName, (int)name_len) == 0)
&& (pzText[name_len] == '>')) {
pzText += name_len + 1;
break;
}
}
pzText = strstr( pzText, ztitle );
} while (pzText != NULL);
return pzText;
}
/* handleProgramSection
*
* "pzText" points to a '[' character.
* The "traditional" [PROG_NAME] segmentation of the config file.
* Do not ever mix with the "<?program prog-name>" variation.
*/
static char*
handleProgramSection(
tOptions* pOpts,
char* pzText )
{
size_t len = strlen( pOpts->pzPROGNAME );
if ( (strncmp( pzText+1, pOpts->pzPROGNAME, len ) == 0)
&& (pzText[len+1] == ']'))
return strchr( pzText + len + 2, '\n' );
if (len > 16)
return NULL;
{
char z[24];
sprintf( z, "[%s]", pOpts->pzPROGNAME );
pzText = strstr( pzText, z );
}
if (pzText != NULL)
pzText = strchr( pzText, '\n' );
return pzText;
}
/* handleStructure
*
* "pzText" points to a '<' character, followed by an alpha.
* The end of the entry is either the "/>" following the name, or else a
* "</name>" string.
*/
static char*
handleStructure(
tOptions* pOpts,
tOptState* pOS,
char* pzText,
int direction )
{
tOptionLoadMode mode = option_load_mode;
tOptionValue valu;
char* pzName = ++pzText;
char* pzData;
char* pcNulPoint;
while (ISNAMECHAR( *pzText )) pzText++;
pcNulPoint = pzText;
valu.valType = OPARG_TYPE_STRING;
switch (*pzText) {
case ' ':
case '\t':
pzText = parseAttributes( pOpts, pzText, &mode, &valu );
if (*pzText == '>')
break;
if (*pzText != '/')
return NULL;
/* FALLTHROUGH */
case '/':
if (pzText[1] != '>')
return NULL;
*pzText = NUL;
pzText += 2;
loadOptionLine( pOpts, pOS, pzName, direction, mode );
return pzText;
case '>':
break;
default:
pzText = strchr( pzText, '>');
if (pzText != NULL)
pzText++;
return pzText;
}
/*
* If we are here, we have a value. "pzText" points to a closing angle
* bracket. Separate the name from the value for a moment.
*/
*pcNulPoint = NUL;
pzData = ++pzText;
/*
* Find the end of the option text and NUL terminate it
*/
{
char z[64], *pz = z;
size_t len = strlen(pzName) + 4;
if (len > sizeof(z))
pz = AGALOC(len, "scan name");
sprintf( pz, "</%s>", pzName );
*pzText = ' ';
pzText = strstr( pzText, pz );
if (pz != z) AGFREE(pz);
if (pzText == NULL)
return pzText;
*pzText = NUL;
pzText += len-1;
}
/*
* Rejoin the name and value for parsing by "loadOptionLine()".
* Erase any attributes parsed by "parseAttributes()".
*/
memset(pcNulPoint, ' ', pzData - pcNulPoint);
/*
* "pzName" points to what looks like text for one option/configurable.
* It is NUL terminated. Process it.
*/
loadOptionLine( pOpts, pOS, pzName, direction, mode );
return pzText;
}
/* internalFileLoad
*
* Load a configuration file. This may be invoked either from
* scanning the "homerc" list, or from a specific file request.
* (see "optionFileLoad()", the implementation for --load-opts)
*/
LOCAL void
internalFileLoad( tOptions* pOpts )
{
int idx;
int inc = DIRECTION_PRESET;
char zFileName[ AG_PATH_MAX+1 ];
if (pOpts->papzHomeList == NULL)
return;
/*
* Find the last RC entry (highest priority entry)
*/
for (idx = 0; pOpts->papzHomeList[ idx+1 ] != NULL; ++idx) ;
/*
* For every path in the home list, ... *TWICE* We start at the last
* (highest priority) entry, work our way down to the lowest priority,
* handling the immediate options.
* Then we go back up, doing the normal options.
*/
for (;;) {
struct stat StatBuf;
cch_t* pzPath;
/*
* IF we've reached the bottom end, change direction
*/
if (idx < 0) {
inc = DIRECTION_PROCESS;
idx = 0;
}
pzPath = pOpts->papzHomeList[ idx ];
/*
* IF we've reached the top end, bail out
*/
if (pzPath == NULL)
break;
idx += inc;
if (! optionMakePath( zFileName, (int)sizeof(zFileName),
pzPath, pOpts->pzProgPath ))
continue;
/*
* IF the file name we constructed is a directory,
* THEN append the Resource Configuration file name
* ELSE we must have the complete file name
*/
if (stat( zFileName, &StatBuf ) != 0)
continue; /* bogus name - skip the home list entry */
if (S_ISDIR( StatBuf.st_mode )) {
size_t len = strlen( zFileName );
char* pz;
if (len + 1 + strlen( pOpts->pzRcName ) >= sizeof( zFileName ))
continue;
pz = zFileName + len;
if (pz[-1] != DIRCH)
*(pz++) = DIRCH;
strcpy( pz, pOpts->pzRcName );
}
filePreset( pOpts, zFileName, inc );
/*
* IF we are now to skip config files AND we are presetting,
* THEN change direction. We must go the other way.
*/
{
tOptDesc * pOD = pOpts->pOptDesc + pOpts->specOptIdx.save_opts+1;
if (DISABLED_OPT(pOD) && PRESETTING(inc)) {
idx -= inc; /* go back and reprocess current file */
inc = DIRECTION_PROCESS;
}
}
} /* twice for every path in the home list, ... */
}
/*=export_func optionFileLoad
*
* what: Load the locatable config files, in order
*
* arg: + tOptions* + pOpts + program options descriptor +
* arg: + char const* + pzProg + program name +
*
* ret_type: int
* ret_desc: 0 -> SUCCESS, -1 -> FAILURE
*
* doc:
*
* This function looks in all the specified directories for a configuration
* file ("rc" file or "ini" file) and processes any found twice. The first
* time through, they are processed in reverse order (last file first). At
* that time, only "immediate action" configurables are processed. For
* example, if the last named file specifies not processing any more
* configuration files, then no more configuration files will be processed.
* Such an option in the @strong{first} named directory will have no effect.
*
* Once the immediate action configurables have been handled, then the
* directories are handled in normal, forward order. In that way, later
* config files can override the settings of earlier config files.
*
* See the AutoOpts documentation for a thorough discussion of the
* config file format.
*
* Configuration files not found or not decipherable are simply ignored.
*
* err: Returns the value, "-1" if the program options descriptor
* is out of date or indecipherable. Otherwise, the value "0" will
* always be returned.
=*/
int
optionFileLoad( tOptions* pOpts, char const* pzProgram )
{
if (! SUCCESSFUL( validateOptionsStruct( pOpts, pzProgram )))
return -1;
pOpts->pzProgName = pzProgram;
internalFileLoad( pOpts );
return 0;
}
/*=export_func optionLoadOpt
* private:
*
* what: Load an option rc/ini file
* arg: + tOptions* + pOpts + program options descriptor +
* arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
*
* doc:
* Processes the options found in the file named with
* pOptDesc->optArg.argString.
=*/
void
optionLoadOpt( tOptions* pOpts, tOptDesc* pOptDesc )
{
/*
* IF the option is not being disabled, THEN load the file. There must
* be a file. (If it is being disabled, then the disablement processing
* already took place. It must be done to suppress preloading of ini/rc
* files.)
*/
if (! DISABLED_OPT( pOptDesc )) {
struct stat sb;
if (stat( pOptDesc->optArg.argString, &sb ) != 0) {
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) == 0)
return;
fprintf( stderr, zFSErrOptLoad, errno, strerror( errno ),
pOptDesc->optArg.argString );
exit(EX_NOINPUT);
/* NOT REACHED */
}
if (! S_ISREG( sb.st_mode )) {
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) == 0)
return;
fprintf( stderr, zNotFile, pOptDesc->optArg.argString );
exit(EX_NOINPUT);
/* NOT REACHED */
}
filePreset(pOpts, pOptDesc->optArg.argString, DIRECTION_CALLED);
}
}
/* parseAttributes
*
* Parse the various attributes of an XML-styled config file entry
*/
LOCAL char*
parseAttributes(
tOptions* pOpts,
char* pzText,
tOptionLoadMode* pMode,
tOptionValue* pType )
{
size_t lenLoadType = strlen( zLoadType );
size_t lenKeyWords = strlen( zKeyWords );
size_t lenSetMem = strlen( zSetMembers );
do {
switch (*pzText) {
case '/': pType->valType = OPARG_TYPE_NONE;
case '>': return pzText;
default:
case NUL: return NULL;
case ' ':
case '\t':
case '\n':
case '\f':
case '\r':
case '\v':
break;
}
while (isspace( (int)*++pzText )) ;
if (strncmp( pzText, zLoadType, lenLoadType ) == 0) {
pzText = parseValueType( pzText+lenLoadType, pType );
continue;
}
if (strncmp( pzText, zKeyWords, lenKeyWords ) == 0) {
pzText = parseKeyWordType( pOpts, pzText+lenKeyWords, pType );
continue;
}
if (strncmp( pzText, zSetMembers, lenSetMem ) == 0) {
pzText = parseSetMemType( pOpts, pzText+lenSetMem, pType );
continue;
}
pzText = parseLoadMode( pzText, pMode );
} while (pzText != NULL);
return pzText;
}
/* parseKeyWordType
*
* "pzText" points to the character after "words=".
* What should follow is a name of a keyword (enumeration) list.
*/
static char*
parseKeyWordType(
tOptions* pOpts,
char* pzText,
tOptionValue* pType )
{
return skipUnknown( pzText );
}
/* parseLoadMode
*
* "pzText" points to some name character. We check for "cooked" or
* "uncooked" or "keep". This function should handle any attribute
* that does not have an associated value.
*/
static char*
parseLoadMode(
char* pzText,
tOptionLoadMode* pMode )
{
{
size_t len = strlen(zLoadCooked);
if (strncmp( pzText, zLoadCooked, len ) == 0) {
if ( (pzText[len] == '>')
|| (pzText[len] == '/')
|| isspace((int)pzText[len])) {
*pMode = OPTION_LOAD_COOKED;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLoadUncooked);
if (strncmp( pzText, zLoadUncooked, len ) == 0) {
if ( (pzText[len] == '>')
|| (pzText[len] == '/')
|| isspace((int)pzText[len])) {
*pMode = OPTION_LOAD_UNCOOKED;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLoadKeep);
if (strncmp( pzText, zLoadKeep, len ) == 0) {
if ( (pzText[len] == '>')
|| (pzText[len] == '/')
|| isspace((int)pzText[len])) {
*pMode = OPTION_LOAD_KEEP;
return pzText + len;
}
goto unknown;
}
}
unknown:
return skipUnknown( pzText );
}
/* parseSetMemType
*
* "pzText" points to the character after "members="
* What should follow is a name of a "set membership".
* A collection of bit flags.
*/
static char*
parseSetMemType(
tOptions* pOpts,
char* pzText,
tOptionValue* pType )
{
return skipUnknown( pzText );
}
/* parseValueType
*
* "pzText" points to the character after "type="
*/
static char*
parseValueType(
char* pzText,
tOptionValue* pType )
{
{
size_t len = strlen(zLtypeString);
if (strncmp( pzText, zLtypeString, len ) == 0) {
if ((pzText[len] == '>') || isspace((int)pzText[len])) {
pType->valType = OPARG_TYPE_STRING;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLtypeInteger);
if (strncmp( pzText, zLtypeInteger, len ) == 0) {
if ((pzText[len] == '>') || isspace((int)pzText[len])) {
pType->valType = OPARG_TYPE_NUMERIC;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLtypeBool);
if (strncmp( pzText, zLtypeBool, len ) == 0) {
if ((pzText[len] == '>') || isspace(pzText[len])) {
pType->valType = OPARG_TYPE_BOOLEAN;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLtypeKeyword);
if (strncmp( pzText, zLtypeKeyword, len ) == 0) {
if ((pzText[len] == '>') || isspace((int)pzText[len])) {
pType->valType = OPARG_TYPE_ENUMERATION;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLtypeSetMembership);
if (strncmp( pzText, zLtypeSetMembership, len ) == 0) {
if ((pzText[len] == '>') || isspace((int)pzText[len])) {
pType->valType = OPARG_TYPE_MEMBERSHIP;
return pzText + len;
}
goto unknown;
}
}
{
size_t len = strlen(zLtypeNest);
if (strncmp( pzText, zLtypeNest, len ) == 0) {
if ((pzText[len] == '>') || isspace((int)pzText[len])) {
pType->valType = OPARG_TYPE_HIERARCHY;
return pzText + len;
}
goto unknown;
}
}
unknown:
pType->valType = OPARG_TYPE_NONE;
return skipUnknown( pzText );
}
/* skipUnknown
*
* Skip over some unknown attribute
*/
static char*
skipUnknown( char* pzText )
{
for (;; pzText++) {
if (isspace( (int)*pzText )) return pzText;
switch (*pzText) {
case NUL: return NULL;
case '/':
case '>': return pzText;
}
}
}
/* validateOptionsStruct
*
* Make sure the option descriptor is there and that we understand it.
* This should be called from any user entry point where one needs to
* worry about validity. (Some entry points are free to assume that
* the call is not the first to the library and, thus, that this has
* already been called.)
*/
LOCAL tSuccess
validateOptionsStruct( tOptions* pOpts, char const* pzProgram )
{
if (pOpts == NULL) {
fputs( zAO_Bad, stderr );
exit( EX_CONFIG );
}
/*
* IF the client has enabled translation and the translation procedure
* is available, then go do it.
*/
if ( ((pOpts->fOptSet & OPTPROC_TRANSLATE) != 0)
&& (pOpts->pTransProc != 0) ) {
(*pOpts->pTransProc)();
pOpts->fOptSet &= ~OPTPROC_TRANSLATE;
}
/*
* IF the struct version is not the current, and also
* either too large (?!) or too small,
* THEN emit error message and fail-exit
*/
if ( ( pOpts->structVersion != OPTIONS_STRUCT_VERSION )
&& ( (pOpts->structVersion > OPTIONS_STRUCT_VERSION )
|| (pOpts->structVersion < OPTIONS_MINIMUM_VERSION )
) ) {
fprintf( stderr, zAO_Err, pOpts->origArgVect[0],
NUM_TO_VER( pOpts->structVersion ));
if (pOpts->structVersion > OPTIONS_STRUCT_VERSION )
fputs( zAO_Big, stderr );
else
fputs( zAO_Sml, stderr );
return FAILURE;
}
/*
* If the program name hasn't been set, then set the name and the path
* and the set of equivalent characters.
*/
if (pOpts->pzProgName == NULL) {
char const* pz = strrchr( pzProgram, DIRCH );
if (pz == NULL)
pOpts->pzProgName = pzProgram;
else pOpts->pzProgName = pz+1;
pOpts->pzProgPath = pzProgram;
/*
* when comparing long names, these are equivalent
*/
strequate( zSepChars );
}
return SUCCESS;
}
/**
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of autoopts/configfile.c */