ossp-pkg/rc/rc_anal.c
/* OSSP rc - Run-command processor
** Copyright (c) 2002 Ralf S. Engelschall
** Copyright (c) 2002 Cable & Wireless Deutschland GmbH
** Copyright (c) 2002 The OSSP Project <http://www.ossp.org/>
**
** This file is part of OSSP rc, a portable Run-command processor
** which can be found at http://www.ossp.org/pkg/lib/rc/
**
** 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.
**
** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
** 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.
**
** rc_anal.c: Run-command processor ISO C source file
*/
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include "rc.h" /* Public interfaces */
#include "rc_const.h" /* String constants */
#include "rc_config.h" /* Configuration interface */
/************************************************
* analNew(void) *
* Construct a new analyser *
************************************************/
rc_anal_t *analNew(void)
{
rc_anal_t *pNew = NULL;
/* Allocate storage for 1 anal object */
pNew = calloc(1, sizeof(rc_anal_t));
return(pNew);
}
/************************************************
* private analRcs(rc_anal_t *, const char *) *
* Read a rc file identifier to analyse *
************************************************/
rc_return_t analRcs(rc_anal_t *pInst, const char *kszName)
{
ex_t Except;
assert(!(pInst)->m_pszRcs); /* Rcs should be NULL until we set them */
if (!kszName)
return(RC_THROW(RC_ERR_RCF));
else { /* Only enter block with valid string, strdup can't handle NULL */
pInst->m_pszRcs = malloc(sizeof(char **));
if (strcmp(kszName, RC_GLOB_WILD)) {
pInst->m_pszRcs = malloc(sizeof(*(pInst->m_pszRcs)) * 2);
pInst->m_pszRcs[0] = strdup(kszName);
pInst->m_pszRcs[0] = strdup(kszName);
pInst->m_pszRcs[1] = NULL;
pInst->m_nRcs = 1; /* We handle just one rc file */
}
else { /* Wildcard rcfile indicates we must glob the locs directories */
try {
analGloblocs(pInst);
}
catch(Except)
rethrow;
}
}
return(RC_THROW(RC_OK));
}
/************************************************
* analGloblocs(rc_anal_t *pInst) *
* Glob all files of the location directories *
************************************************/
rc_return_t analGloblocs(rc_anal_t *pInst)
{
DIR *pLocdir = NULL;
struct dirent *pDirent = NULL;
char *szLocations = NULL; /* Locations of run command files */
int nCount = 0; /* How many globbed files we find */
int nIter = 0; /* Used to step through found files */
assert(pInst); /* Sanity check */
/* Build the location path name */
if (!configGetval(RC_LOC_VAL)) {
szLocations = NULL;
szLocations = strdup("./"); /* FIXME: Relocate default val */
RC_THROW(RC_ERR_INT); /* Config should have given a locs default */
}
else { /* Only enter block with valid string, strdup can't handle NULL */
if (*(configGetval(RC_LOC_VAL) + strlen(configGetval(RC_LOC_VAL)) - sizeof (char)) != '/') {
szLocations = malloc(strlen(configGetval(RC_LOC_VAL)) + \
sizeof (char) + \
sizeof (char));
strcpy(szLocations, configGetval(RC_LOC_VAL));
strcat(szLocations, "/");
}
else
szLocations = strdup(configGetval(RC_LOC_VAL));
}
/* First just learn how many globbed files we have */
if ((pLocdir = opendir(szLocations)) == NULL)
return(RC_THROW(RC_ERR_DIR));
for (pDirent = readdir(pLocdir); pDirent; pDirent = readdir(pLocdir))
if (!strncmp(pDirent->d_name, "rc.", 3))
nCount++;
closedir(pLocdir);
if (nCount == 0) /* Check out the health of this directory listing */
return(RC_THROW(RC_ERR_DIR));
else /* Allocate for the string array to hold directory entry names */
pInst->m_pszRcs = malloc(sizeof(pInst->m_pszRcs) * (nCount + 1));
/* Loop through file index setting rc file names according to dirent */
if ((pLocdir = opendir(szLocations)) == NULL)
return(RC_THROW(RC_ERR_DIR));
for (pDirent = readdir(pLocdir); pDirent; pDirent = readdir(pLocdir)) {
if (!strncmp(pDirent->d_name, "rc.", 3)) {
pInst->m_pszRcs[nIter] = strdup(pDirent->d_name + \
strlen("rc.") * sizeof(char));
nIter++;
}
}
closedir(pLocdir);
pInst->m_pszRcs[nIter] = NULL; /* Terminate */
pInst->m_nRcs = nCount; /* Store how many globbed files there are */
return(RC_THROW(RC_OK));
}
/************************************************
* analDelete(rc_anal_t *) *
* Destruct an analyser *
************************************************/
rc_return_t analDelete(rc_anal_t *pInst)
{
/* FIXME: It could be that pInst needs to be a double pointer to */
/* be properly used in destruction. Otherwise members are */
/* just copies of the stack parameters passed in. */
int nIter = 0;
assert(pInst); /* Verify sanity */
if (pInst->m_pszRcs && pInst->m_pszRcs[nIter])
while (pInst->m_pszRcs[nIter]) /* Rc file names */
free(pInst->m_pszRcs[nIter++]);
if (pInst->m_pszRcs) /* Rc file name index */
free(pInst->m_pszRcs);
free(pInst);
return(RC_THROW(RC_OK));
}
