/* gets the list of mechanisms */
int _sasl_load_plugins(const add_plugin_list_t *entrypoints,
const sasl_callback_t *getpath_cb,
const sasl_callback_t *verifyfile_cb)
{
int result;
char cur_dir[PATH_MAX], full_name[PATH_MAX+2], prefix[PATH_MAX+2];
/* 1 for '\\' 1 for trailing '\0' */
char * pattern;
char c;
int pos;
const char *path=NULL;
int position;
const add_plugin_list_t *cur_ep;
struct stat statbuf; /* filesystem entry information */
intptr_t fhandle; /* file handle for _findnext function */
struct _finddata_t finddata; /* data returned by _findnext() */
size_t prefix_len;
if (! entrypoints
|| ! getpath_cb
|| getpath_cb->id != SASL_CB_GETPATH
|| ! getpath_cb->proc
|| ! verifyfile_cb
|| verifyfile_cb->id != SASL_CB_VERIFYFILE
|| ! verifyfile_cb->proc)
return SASL_BADPARAM;
/* get the path to the plugins */
result = ((sasl_getpath_t *)(getpath_cb->proc))(getpath_cb->context,
&path);
if (result != SASL_OK) return result;
if (! path) return SASL_FAIL;
if (strlen(path) >= PATH_MAX) { /* no you can't buffer overrun */
return SASL_FAIL;
}
position=0;
do {
pos=0;
do {
c=path[position];
position++;
cur_dir[pos]=c;
pos++;
} while ((c!=PATHS_DELIMITER) && (c!=0));
cur_dir[pos-1]='\0';
/* : check to make sure that a valid directory name was passed in */
if (stat (cur_dir, &statbuf) < 0) {
continue;
}
if ((statbuf.st_mode & S_IFDIR) == 0) {
continue;
}
strcpy (prefix, cur_dir);
prefix_len = strlen (prefix);
/* : Don't append trailing \ unless required */
if (prefix[prefix_len-1] != '\\') {
strcat (prefix,"\\");
prefix_len++;
}
pattern = prefix;
/* : Check that we have enough space for "*.dll" */
if ((prefix_len + DLL_MASK_LEN) > (sizeof(prefix) - 1)) {
_sasl_log(NULL, SASL_LOG_WARN, "plugin search mask is too big");
continue;
}
strcat (prefix + prefix_len, "*" DLL_SUFFIX);
fhandle = _findfirst (pattern, &finddata);
if (fhandle == -1) { /* no matching files */
continue;
}
/* : Truncate "*.dll" */
prefix[prefix_len] = '\0';
do {
size_t length;
void *library;
char *c;
char plugname[PATH_MAX];
int entries;
length = strlen(finddata.name);
if (length < 5) { /* At least <Ch>.dll */
continue; /* can not possibly be what we're looking for */
}
/* : Check for overflow */
if (length + prefix_len >= PATH_MAX) continue; /* too big */
if (stricmp(finddata.name + (length - strlen(DLL_SUFFIX)), DLL_SUFFIX) != 0) {
continue;
}
/* : Check that it is not a directory */
if ((finddata.attrib & _A_SUBDIR) == _A_SUBDIR) {
continue;
}
/* : Construct full name from prefix and name */
strcpy (full_name, prefix);
strcat (full_name, finddata.name);
/* cut off .dll suffix -- this only need be approximate */
strcpy (plugname, finddata.name);
c = strrchr(plugname, '.');
if (c != NULL) *c = '\0';
result = _sasl_get_plugin (full_name, verifyfile_cb, &library);
if (result != SASL_OK) {
continue;
}
entries = 0;
for (cur_ep = entrypoints; cur_ep->entryname; cur_ep++) {
result = _sasl_plugin_load(plugname,
library,
cur_ep->entryname,
cur_ep->add_plugin);
if (result == SASL_OK) {
++entries;
}
/* If this fails, it's not the end of the world */
}
if (entries == 0) {
_sasl_remove_last_plugin();
}
} while (_findnext (fhandle, &finddata) == 0);
_findclose (fhandle);
} while ((c!='=') && (c!=0));
return SASL_OK;
}
/* gets the list of mechanisms */
int _sasl_load_plugins(const add_plugin_list_t *entrypoints,
const sasl_callback_t *getpath_cb,
const sasl_callback_t *verifyfile_cb)
{
int result;
TCHAR cur_dir[PATH_MAX], full_name[PATH_MAX+2], prefix[PATH_MAX+2];
/* 1 for '\\' 1 for trailing '\0' */
TCHAR * pattern;
TCHAR c;
int pos;
int retCode = SASL_OK;
char *utf8path = NULL;
TCHAR *path=NULL;
int position;
const add_plugin_list_t *cur_ep;
struct _stat statbuf; /* filesystem entry information */
intptr_t fhandle; /* file handle for _findnext function */
struct _tfinddata_t finddata; /* data returned by _findnext() */
size_t prefix_len;
/* for static plugins */
add_plugin_t *add_plugin;
_sasl_plug_type type;
_sasl_plug_rec *p;
if (! entrypoints
|| ! getpath_cb
|| getpath_cb->id != SASL_CB_GETPATH
|| ! getpath_cb->proc
|| ! verifyfile_cb
|| verifyfile_cb->id != SASL_CB_VERIFYFILE
|| ! verifyfile_cb->proc)
return SASL_BADPARAM;
/* do all the static plugins first */
for (cur_ep = entrypoints; cur_ep->entryname; cur_ep++) {
/* What type of plugin are we looking for? */
if (!strcmp(cur_ep->entryname, "sasl_server_plug_init")) {
type = SERVER;
add_plugin = (add_plugin_t *)sasl_server_add_plugin;
}
else if (!strcmp(cur_ep->entryname, "sasl_client_plug_init")) {
type = CLIENT;
add_plugin = (add_plugin_t *)sasl_client_add_plugin;
}
else if (!strcmp(cur_ep->entryname, "sasl_auxprop_plug_init")) {
type = AUXPROP;
add_plugin = (add_plugin_t *)sasl_auxprop_add_plugin;
}
else if (!strcmp(cur_ep->entryname, "sasl_canonuser_init")) {
type = CANONUSER;
add_plugin = (add_plugin_t *)sasl_canonuser_add_plugin;
}
else {
/* What are we looking for then? */
return SASL_FAIL;
}
for (p = _sasl_static_plugins; p->type; p++) {
if (type == p->type)
result = add_plugin(p->name, p->plug);
}
}
/* get the path to the plugins */
result = ((sasl_getpath_t *)(getpath_cb->proc))(getpath_cb->context,
&utf8path);
if (result != SASL_OK) return result;
if (!utf8path) return SASL_FAIL;
if (sizeof(TCHAR) == sizeof(char)) {
path = (TCHAR*)utf8path;
}
else {
path = _sasl_utf8_to_wchar(utf8path);
if (!path) return SASL_FAIL;
}
if (_tcslen(path) >= PATH_MAX) { /* no you can't buffer overrun */
retCode = SASL_FAIL;
goto cleanup;
}
position=0;
do {
pos=0;
do {
c=path[position];
position++;
cur_dir[pos]=c;
pos++;
} while ((c!=PATHS_DELIMITER) && (c!=0));
cur_dir[pos-1]='\0';
/* : check to make sure that a valid directory name was passed in */
if (_tstat (cur_dir, &statbuf) < 0) {
continue;
}
if ((statbuf.st_mode & S_IFDIR) == 0) {
continue;
}
_tcscpy(prefix, cur_dir);
prefix_len = _tcslen (prefix);
/* : Don't append trailing \ unless required */
if (prefix[prefix_len-1] != '\\') {
_tcscat(prefix,_T("\\"));
prefix_len++;
}
pattern = prefix;
/* : Check that we have enough space for "*.dll" */
if ((prefix_len + DLL_MASK_LEN) > (sizeof(prefix) / sizeof(TCHAR) - 1)) {
_sasl_log(NULL, SASL_LOG_WARN, "plugin search mask is too big");
continue;
}
_tcscat (prefix + prefix_len, _T("*") DLL_SUFFIX);
fhandle = _tfindfirst (pattern, &finddata);
if (fhandle == -1) { /* no matching files */
continue;
}
/* : Truncate "*.dll" */
prefix[prefix_len] = '\0';
do {
size_t length;
void *library;
char *c;
char plugname[PATH_MAX];
int entries;
length = _tcslen(finddata.name);
if (length < 5) { /* At least <Ch>.dll */
continue; /* can not possibly be what we're looking for */
}
/* : Check for overflow */
if (length + prefix_len >= PATH_MAX) continue; /* too big */
if (_tcscmp(finddata.name + (length - _tcslen(DLL_SUFFIX)), DLL_SUFFIX) != 0) {
continue;
}
/* : Check that it is not a directory */
if ((finddata.attrib & _A_SUBDIR) == _A_SUBDIR) {
continue;
}
/* : Construct full name from prefix and name */
_tcscpy (full_name, prefix);
_tcscat (full_name, finddata.name);
/* cut off .dll suffix -- this only need be approximate */
if (sizeof(TCHAR) != sizeof(char)) {
if (WideCharToMultiByte(CP_UTF8, 0, finddata.name, -1, plugname, sizeof(plugname), NULL, NULL) == 0) { // in case of unicode use utf8
continue;
}
}
else {
_tcscpy((TCHAR*)plugname, finddata.name); // w/o unicode local enconding is fine
}
c = strchr(plugname, '.');
if (c != NULL) *c = '\0';
result = _tsasl_get_plugin (full_name, verifyfile_cb, &library);
if (result != SASL_OK) {
continue;
}
entries = 0;
for (cur_ep = entrypoints; cur_ep->entryname; cur_ep++) {
result = _sasl_plugin_load(plugname,
library,
cur_ep->entryname,
cur_ep->add_plugin);
if (result == SASL_OK) {
++entries;
}
/* If this fails, it's not the end of the world */
}
if (entries == 0) {
_sasl_remove_last_plugin();
}
} while (_tfindnext (fhandle, &finddata) == 0);
_findclose (fhandle);
} while ((c!='=') && (c!=0));
cleanup:
if (sizeof(TCHAR) != sizeof(char)) {
sasl_FREE(path); /* It's always allocated in coversion to wchar */
}
return retCode;
}
