static int
GetCellNT(struct afsconf_dir *adir)
{
if (_afsconf_IsClientConfigDirectory(adir->name)) {
/* NT client config dir; ThisCell is in registry (no file). */
return afssw_GetClientCellName(&adir->cellName);
} else {
/* NT server config dir; works just like Unix */
return GetCellUnix(adir);
}
}
static void
_afsconf_CellServDBPath(struct afsconf_dir *adir, char **path)
{
char *p;
/* NT client CellServDB has different file name than NT server or Unix */
if (_afsconf_IsClientConfigDirectory(adir->name)) {
if (!afssw_GetClientCellServDBDir(&p)) {
asprintf(path, "%s/%s", p, AFSDIR_CELLSERVDB_FILE_NTCLIENT);
free(p);
} else {
asprintf(path, "%s/%s", adir->name, AFSDIR_CELLSERVDB_FILE_NTCLIENT);
}
} else {
asprintf(path, "%s/%s", adir->name, AFSDIR_CELLSERVDB_FILE);
}
return;
}
/**
* 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;
}
int
afsconf_GetCellInfo(struct afsconf_dir *adir, char *acellName, char *aservice,
struct afsconf_cell *acellInfo)
{
struct afsconf_entry *tce;
struct afsconf_aliasentry *tcae;
struct afsconf_entry *bestce;
afs_int32 i;
int tservice;
char *tcell;
int cnLen;
int ambig;
char tbuffer[64];
LOCK_GLOBAL_MUTEX;
if (adir)
_afsconf_Check(adir);
if (acellName) {
tcell = acellName;
cnLen = (int)(strlen(tcell) + 1);
lcstring(tcell, tcell, cnLen);
afsconf_SawCell = 1; /* will ignore the AFSCELL switch on future */
/* call to afsconf_GetLocalCell: like klog */
} else {
i = afsconf_GetLocalCell(adir, tbuffer, sizeof(tbuffer));
if (i) {
UNLOCK_GLOBAL_MUTEX;
return i;
}
tcell = tbuffer;
}
cnLen = strlen(tcell);
bestce = (struct afsconf_entry *)0;
ambig = 0;
if (!adir) {
UNLOCK_GLOBAL_MUTEX;
return 0;
}
/* Look through the list of aliases */
for (tcae = adir->alias_entries; tcae; tcae = tcae->next) {
if (strcasecmp(tcae->aliasInfo.aliasName, tcell) == 0) {
tcell = tcae->aliasInfo.realName;
break;
}
}
for (tce = adir->entries; tce; tce = tce->next) {
if (strcasecmp(tce->cellInfo.name, tcell) == 0) {
/* found our cell */
bestce = tce;
ambig = 0;
break;
}
if (strlen(tce->cellInfo.name) < cnLen)
continue; /* clearly wrong */
if (strncasecmp(tce->cellInfo.name, tcell, cnLen) == 0) {
if (bestce)
ambig = 1; /* ambiguous unless we get exact match */
bestce = tce;
}
}
if (!ambig && bestce && bestce->cellInfo.numServers) {
*acellInfo = bestce->cellInfo; /* structure assignment */
if (aservice) {
tservice = afsconf_FindService(aservice);
if (tservice < 0) {
UNLOCK_GLOBAL_MUTEX;
return AFSCONF_NOTFOUND; /* service not found */
}
for (i = 0; i < acellInfo->numServers; i++) {
acellInfo->hostAddr[i].sin_port = tservice;
}
}
acellInfo->timeout = 0;
/*
* Until we figure out how to separate out ubik server
* queries from other server queries, only perform gethostbyname()
* lookup on the specified hostnames for the client CellServDB files.
*/
if (_afsconf_IsClientConfigDirectory(adir->name) &&
!(acellInfo->flags & AFSCONF_CELL_FLAG_DNS_QUERIED)) {
int j;
short numServers=0; /*Num active servers for the cell */
struct sockaddr_in hostAddr[MAXHOSTSPERCELL]; /*IP addresses for cell's servers */
char hostName[MAXHOSTSPERCELL][MAXHOSTCHARS]; /*Names for cell's servers */
char clone[MAXHOSTSPERCELL]; /*Indicates which ones are clones. */
memset(&hostAddr, 0, sizeof(hostAddr));
memset(&hostName, 0, sizeof(hostName));
memset(&clone, 0, sizeof(clone));
for ( j=0; j<acellInfo->numServers && numServers < MAXHOSTSPERCELL; j++ ) {
struct hostent *he = gethostbyname(acellInfo->hostName[j]);
int foundAddr = 0;
if (he && he->h_addrtype == AF_INET) {
int i;
/* obtain all the valid address from the list */
for (i=0 ; he->h_addr_list[i] && numServers < MAXHOSTSPERCELL; i++) {
/* check to see if this is a new address; if so insert it into the list */
int k, dup;
afs_uint32 addr;
memcpy(&addr, he->h_addr_list[i], sizeof(addr));
for (k=0, dup=0; !dup && k < numServers; k++) {
if (hostAddr[k].sin_addr.s_addr == addr) {
dup = 1;
}
}
if (dup)
continue;
hostAddr[numServers].sin_family = AF_INET;
hostAddr[numServers].sin_port = acellInfo->hostAddr[0].sin_port;
#ifdef STRUCT_SOCKADDR_HAS_SA_LEN
hostAddr[numServers].sin_len = sizeof(struct sockaddr_in);
#endif
memcpy(&hostAddr[numServers].sin_addr.s_addr, he->h_addr_list[i], sizeof(afs_uint32));
strcpy(hostName[numServers], acellInfo->hostName[j]);
clone[numServers] = acellInfo->clone[j];
foundAddr = 1;
numServers++;
}
}
if (!foundAddr) {
hostAddr[numServers] = acellInfo->hostAddr[j];
strcpy(hostName[numServers], acellInfo->hostName[j]);
clone[numServers] = acellInfo->clone[j];
numServers++;
}
}
for (i=0; i<numServers; i++) {
acellInfo->hostAddr[i] = hostAddr[i];
strcpy(acellInfo->hostName[i], hostName[i]);
acellInfo->clone[i] = clone[i];
}
acellInfo->numServers = numServers;
acellInfo->flags |= AFSCONF_CELL_FLAG_DNS_QUERIED;
}
UNLOCK_GLOBAL_MUTEX;
return 0;
} else {
UNLOCK_GLOBAL_MUTEX;
return afsconf_GetAfsdbInfo(tcell, aservice, acellInfo);
}
}
