/* set modtime on file */
int
_afsconf_Touch(struct afsconf_dir *adir)
{
char *cellservDB;
int code;
#ifndef AFS_NT40_ENV
struct timeval tvp[2];
#endif
adir->timeRead = 0; /* just in case */
adir->timeCheck = 0;
_afsconf_CellServDBPath(adir, &cellservDB);
if (cellservDB == NULL)
return ENOMEM;
#ifdef AFS_NT40_ENV
code = _utime(cellservDB, NULL);
#else
gettimeofday(&tvp[0], NULL);
tvp[1] = tvp[0];
code = utimes(cellservDB, tvp);
#endif /* AFS_NT40_ENV */
free(cellservDB);
return code;
}
int
_afsconf_UpToDate(struct afsconf_dir *adir)
{
char *cellservDB;
struct stat tstat;
int code;
time_t now = time(0);
if (adir->timeCheck == now) {
return 1; /* stat no more than once a second */
}
adir->timeCheck = now;
_afsconf_CellServDBPath(adir, &cellservDB);
if (cellservDB == NULL)
return 0;
code = stat(cellservDB, &tstat);
free(cellservDB);
if (code < 0)
return 0; /* Can't throw the error, so just say we're not up to date */
/* did file change? */
if (tstat.st_mtime == adir->timeRead)
return 1;
/* otherwise file has changed */
return 0;
}
/**
* Load the cell configuration into memory.
*
* Read the cell configuration into a newly allocated or cleared afsconf_dir
* structure. Reads the CellServDB file, and if present, the cell alias file,
* the key files, and kerberos related files.
*
* If the configuration cannot be loaded for any reason, any partial changes
* are freed. The name member is preserved.
*
* @param[in,out] adir pointer to the cell configuration
* the name member must be set to the pathname of the
* cell configuration to be loaded. All other members
* must be unassigned.
*
* @returns 0 on success
*/
static int
LoadConfig(struct afsconf_dir *adir)
{
afsconf_FILE *tf;
char *tp, *bp;
struct afsconf_entry *curEntry;
struct afsconf_aliasentry *curAlias;
afs_int32 code;
afs_int32 i;
char tbuffer[256];
struct stat tstat;
#ifdef AFS_NT40_ENV
cm_enumCellRegistry_t enumCellRegistry = {0, 0};
#endif /* AFS_NT40_ENV */
/* init the keys queue before any call to UnloadConfig() */
_afsconf_InitKeys(adir);
/* figure out the local cell name */
#ifdef AFS_NT40_ENV
i = GetCellNT(adir);
enumCellRegistry.adir = adir;
#else
i = GetCellUnix(adir);
#endif
#ifndef AFS_FREELANCE_CLIENT /* no local cell not fatal in freelance */
if (i) {
return i;
}
#endif
/* now parse the individual lines */
curEntry = 0;
_afsconf_CellServDBPath(adir, &adir->cellservDB);
#ifdef AFS_NT40_ENV
if (_afsconf_IsClientConfigDirectory(adir->name))
enumCellRegistry.client = 1;
#endif /* AFS_NT40_ENV */
if (!stat(adir->cellservDB, &tstat)) {
adir->timeRead = tstat.st_mtime;
} else {
adir->timeRead = 0;
}
tf = fopen(adir->cellservDB, "r");
if (!tf) {
return -1;
}
/* The CellServDB file is now open.
* The following code parses the contents of the
* file and creates a list with the first cell entry
* in the CellServDB file at the end of the list.
*
* No checking is performed for duplicates.
* The side effects of this process are that duplicate
* entries appended to the end of the CellServDB file
* take precedence and are found in a shorter period
* of time.
*/
while (1) {
tp = fgets(tbuffer, sizeof(tbuffer), tf);
if (!tp)
break;
TrimLine(tbuffer, sizeof tbuffer); /* remove white space */
if (tbuffer[0] == 0 || tbuffer[0] == '\n')
continue; /* empty line */
if (tbuffer[0] == '>') {
char linkedcell[MAXCELLCHARS];
/* start new cell item */
if (curEntry) {
/* thread this guy on the list */
curEntry->next = adir->entries;
adir->entries = curEntry;
curEntry = 0;
}
curEntry = calloc(1, sizeof(struct afsconf_entry));
code =
ParseCellLine(tbuffer, curEntry->cellInfo.name, linkedcell);
if (code) {
UnloadConfig(adir);
fclose(tf);
free(curEntry);
return -1;
}
if (linkedcell[0] != '\0')
curEntry->cellInfo.linkedCell = strdup(linkedcell);
} else {
/* new host in the current cell */
if (!curEntry) {
UnloadConfig(adir);
fclose(tf);
return -1;
}
i = curEntry->cellInfo.numServers;
if (i < MAXHOSTSPERCELL) {
code = ParseHostLine(tbuffer,
&curEntry->cellInfo.hostAddr[i],
curEntry->cellInfo.hostName[i],
&curEntry->cellInfo.clone[i]);
if (code) {
if (code == AFSCONF_SYNTAX) {
for (bp = tbuffer; *bp != '\n'; bp++) { /* Take out the <cr> from the buffer */
if (!*bp)
break;
}
*bp = '\0';
fprintf(stderr,
"Can't properly parse host line \"%s\" in configuration file %s\n",
tbuffer, adir->cellservDB);
}
free(curEntry);
fclose(tf);
UnloadConfig(adir);
return -1;
}
curEntry->cellInfo.numServers = ++i;
} else {
fprintf(stderr,
"Too many hosts for cell %s in configuration file %s\n",
curEntry->cellInfo.name, adir->cellservDB);
}
}
}
fclose(tf); /* close the file now */
/* end the last partially-completed cell */
if (curEntry) {
curEntry->next = adir->entries;
adir->entries = curEntry;
}
#ifdef AFS_NT40_ENV
/*
* Windows maintains a CellServDB list in the Registry
* that supercedes the contents of the CellServDB file.
* Prepending these entries to the head of the list
* is sufficient to enforce the precedence.
*/
cm_EnumerateCellRegistry( enumCellRegistry.client,
cm_enumCellRegistryProc,
&enumCellRegistry);
#endif /* AFS_NT40_ENV */
/* Read in the alias list */
strcompose(tbuffer, 256, adir->name, "/", AFSDIR_CELLALIAS_FILE,
(char *)NULL);
tf = fopen(tbuffer, "r");
while (tf) {
char *aliasPtr;
tp = fgets(tbuffer, sizeof(tbuffer), tf);
if (!tp)
break;
TrimLine(tbuffer, sizeof tbuffer); /* remove white space */
if (tbuffer[0] == '\0' || tbuffer[0] == '\n' || tbuffer[0] == '#')
continue; /* empty line */
tp = tbuffer;
while (tp[0] != '\0' && tp[0] != ' ' && tp[0] != '\t')
tp++;
if (tp[0] == '\0')
continue; /* invalid line */
while (tp[0] != '\0' && (tp[0] == ' ' || tp[0] == '\t'))
0[tp++] = '\0';
if (tp[0] == '\0')
continue; /* invalid line */
aliasPtr = tp;
while (tp[0] != '\0' && tp[0] != ' ' && tp[0] != '\t' && tp[0] != '\r'
&& tp[0] != '\n')
tp++;
tp[0] = '\0';
curAlias = calloc(1, sizeof(*curAlias));
strlcpy(curAlias->aliasInfo.aliasName, aliasPtr, sizeof curAlias->aliasInfo.aliasName);
strlcpy(curAlias->aliasInfo.realName, tbuffer, sizeof curAlias->aliasInfo.realName);
curAlias->next = adir->alias_entries;
adir->alias_entries = curAlias;
}
if (tf != NULL)
fclose(tf);
/* now read the fs keys, if possible */
code = _afsconf_LoadKeys(adir);
if (code) {
return code;
}
code = _afsconf_LoadRealms(adir);
return code;
}
