/* auxprop.c - auxilliary property support
* Rob Siemborski
* $Id: auxprop.c,v 1.19 2009/01/28 22:49:14 mel Exp $
*/
/*
* Copyright (c) 1998-2003 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any other legal
* details, please contact
* Office of Technology Transfer
* Carnegie Mellon University
* 5000 Forbes Avenue
* Pittsburgh, PA 15213-3890
* (412) 268-4387, fax: (412) 268-7395
* tech-transfer@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <sasl.h>
#include <prop.h>
#include <ctype.h>
#include <stdio.h>
#include "saslint.h"
struct proppool
{
struct proppool *next;
size_t size; /* Size of Block */
size_t unused; /* Space unused in this pool between end
* of char** area and beginning of char* area */
char data[1]; /* Variable Sized */
};
struct propctx {
struct propval *values;
struct propval *prev_val; /* Previous value used by set/setvalues */
unsigned used_values, allocated_values;
char *data_end; /* Bottom of string area in current pool */
char **list_end; /* Top of list area in current pool */
struct proppool *mem_base;
struct proppool *mem_cur;
};
typedef struct auxprop_plug_list
{
struct auxprop_plug_list *next;
const sasl_auxprop_plug_t *plug;
} auxprop_plug_list_t;
static auxprop_plug_list_t *auxprop_head = NULL;
static struct proppool *alloc_proppool(size_t size)
{
struct proppool *ret;
/* minus 1 for the one that is already a part of the array
* in the struct */
size_t total_size = sizeof(struct proppool) + size - 1;
ret = sasl_ALLOC(total_size);
if(!ret) return NULL;
memset(ret, 0, total_size);
ret->size = ret->unused = size;
return ret;
}
/* Resize a proppool. Invalidates the unused value for this pool */
static struct proppool *resize_proppool(struct proppool *pool, size_t size)
{
struct proppool *ret;
if(pool->size >= size) return pool;
ret = sasl_REALLOC(pool, sizeof(struct proppool) + size);
if(!ret) return NULL;
ret->size = size;
return ret;
}
static int prop_init(struct propctx *ctx, unsigned estimate)
{
const unsigned VALUES_SIZE = PROP_DEFAULT * sizeof(struct propval);
ctx->mem_base = alloc_proppool(VALUES_SIZE + estimate);
if(!ctx->mem_base) return SASL_NOMEM;
ctx->mem_cur = ctx->mem_base;
ctx->values = (struct propval *)ctx->mem_base->data;
ctx->mem_base->unused = ctx->mem_base->size - VALUES_SIZE;
ctx->allocated_values = PROP_DEFAULT;
ctx->used_values = 0;
ctx->data_end = ctx->mem_base->data + ctx->mem_base->size;
ctx->list_end = (char **)(ctx->mem_base->data + VALUES_SIZE);
ctx->prev_val = NULL;
return SASL_OK;
}
/* create a property context
* estimate -- an estimate of the storage needed for requests & responses
* 0 will use module default
* returns NULL on error
*/
struct propctx *prop_new(unsigned estimate)
{
struct propctx *new_ctx;
if(!estimate) estimate = PROP_DEFAULT * 255;
new_ctx = sasl_ALLOC(sizeof(struct propctx));
if(!new_ctx) return NULL;
if(prop_init(new_ctx, estimate) != SASL_OK) {
prop_dispose(&new_ctx);
}
return new_ctx;
}
/* create new propctx which duplicates the contents of an existing propctx
* returns -1 on error
*/
int prop_dup(struct propctx *src_ctx, struct propctx **dst_ctx)
{
struct proppool *pool;
struct propctx *retval = NULL;
unsigned i;
int result;
unsigned total_size = 0;
size_t values_size;
if(!src_ctx || !dst_ctx) return SASL_BADPARAM;
/* What is the total allocated size of src_ctx? */
pool = src_ctx->mem_base;
while(pool) {
total_size += (unsigned) pool->size;
pool = pool->next;
}
/* allocate the new context */
retval = prop_new(total_size);
if(!retval) return SASL_NOMEM;
retval->used_values = src_ctx->used_values;
retval->allocated_values = src_ctx->used_values + 1;
values_size = (retval->allocated_values * sizeof(struct propval));
retval->mem_base->unused = retval->mem_base->size - values_size;
retval->list_end = (char **)(retval->mem_base->data + values_size);
/* data_end should still be OK */
/* Now dup the values */
for(i=0; i<src_ctx->used_values; i++) {
retval->values[i].name = src_ctx->values[i].name;
result = prop_setvals(retval, retval->values[i].name,
src_ctx->values[i].values);
if(result != SASL_OK)
goto fail;
}
retval->prev_val = src_ctx->prev_val;
*dst_ctx = retval;
return SASL_OK;
fail:
if(retval) prop_dispose(&retval);
return result;
}
/*
* dispose of property context
* ctx -- is disposed and set to NULL; noop if ctx or *ctx is NULL
*/
void prop_dispose(struct propctx **ctx)
{
struct proppool *tmp;
if(!ctx || !*ctx) return;
while((*ctx)->mem_base) {
tmp = (*ctx)->mem_base;
(*ctx)->mem_base = tmp->next;
sasl_FREE(tmp);
}
sasl_FREE(*ctx);
*ctx = NULL;
return;
}
/* Add property names to request
* ctx -- context from prop_new()
* names -- list of property names; must persist until context freed
* or requests cleared
*
* NOTE: may clear values from context as side-effect
* returns -1 on error
*/
int prop_request(struct propctx *ctx, const char **names)
{
unsigned i, new_values, total_values;
if(!ctx || !names) return SASL_BADPARAM;
/* Count how many we need to add */
for(new_values=0; names[new_values]; new_values++);
/* Do we need to add ANY? */
if(!new_values) return SASL_OK;
/* We always want at least one extra to mark the end of the array */
total_values = new_values + ctx->used_values + 1;
/* Do we need to increase the size of our propval table? */
if(total_values > ctx->allocated_values) {
unsigned max_in_pool;
/* Do we need a larger base pool? */
max_in_pool = (unsigned) (ctx->mem_base->size / sizeof(struct propval));
if(total_values <= max_in_pool) {
/* Don't increase the size of the base pool, just use what
we need */
ctx->allocated_values = total_values;
ctx->mem_base->unused =
ctx->mem_base->size - (sizeof(struct propval)
* ctx->allocated_values);
} else {
/* We need to allocate more! */
unsigned new_alloc_length;
size_t new_size;
new_alloc_length = 2 * ctx->allocated_values;
while(total_values > new_alloc_length) {
new_alloc_length *= 2;
}
new_size = new_alloc_length * sizeof(struct propval);
ctx->mem_base = resize_proppool(ctx->mem_base, new_size);
if(!ctx->mem_base) {
ctx->values = NULL;
ctx->allocated_values = ctx->used_values = 0;
return SASL_NOMEM;
}
/* It worked! Update the structure! */
ctx->values = (struct propval *)ctx->mem_base->data;
ctx->allocated_values = new_alloc_length;
ctx->mem_base->unused = ctx->mem_base->size
- sizeof(struct propval) * ctx->allocated_values;
}
/* Clear out new propvals */
memset(&(ctx->values[ctx->used_values]), 0,
sizeof(struct propval) * (ctx->allocated_values - ctx->used_values));
/* Finish updating the context -- we've extended the list! */
/* ctx->list_end = (char **)(ctx->values + ctx->allocated_values); */
/* xxx test here */
ctx->list_end = (char **)(ctx->values + total_values);
}
/* Now do the copy, or referencing rather */
for(i=0;i<new_values;i++) {
unsigned j, flag;
flag = 0;
/* Check for dups */
for(j=0;j<ctx->used_values;j++) {
if(!strcmp(ctx->values[j].name, names[i])) {
flag = 1;
break;
}
}
/* We already have it... skip! */
if(flag) continue;
ctx->values[ctx->used_values++].name = names[i];
}
prop_clear(ctx, 0);
return SASL_OK;
}
/* return array of struct propval from the context
* return value persists until next call to
* prop_request, prop_clear or prop_dispose on context
*/
const struct propval *prop_get(struct propctx *ctx)
{
if(!ctx) return NULL;
return ctx->values;
}
/* Fill in an array of struct propval based on a list of property names
* return value persists until next call to
* prop_request, prop_clear or prop_dispose on context
* returns -1 on error (no properties ever requested, ctx NULL, etc)
* returns number of matching properties which were found (values != NULL)
* if a name requested here was never requested by a prop_request, then
* the name field of the associated vals entry will be set to NULL
*/
int prop_getnames(struct propctx *ctx, const char **names,
struct propval *vals)
{
int found_names = 0;
struct propval *cur = vals;
const char **curname;
if(!ctx || !names || !vals) return SASL_BADPARAM;
for(curname = names; *curname; curname++) {
struct propval *val;
for(val = ctx->values; val->name; val++) {
if(!strcmp(*curname,val->name)) {
found_names++;
memcpy(cur, val, sizeof(struct propval));
goto next;
}
}
/* If we are here, we didn't find it */
memset(cur, 0, sizeof(struct propval));
next:
cur++;
}
return found_names;
}
/* clear values and optionally requests from property context
* ctx -- property context
* requests -- 0 = don't clear requests, 1 = clear requests
*/
void prop_clear(struct propctx *ctx, int requests)
{
struct proppool *new_pool, *tmp;
unsigned i;
/* We're going to need a new proppool once we reset things */
new_pool = alloc_proppool(ctx->mem_base->size +
(ctx->used_values+1) * sizeof(struct propval));
if(requests) {
/* We're wiping the whole shebang */
ctx->used_values = 0;
} else {
/* Need to keep around old requets */
struct propval *new_values = (struct propval *)new_pool->data;
for(i=0; i<ctx->used_values; i++) {
new_values[i].name = ctx->values[i].name;
}
}
while(ctx->mem_base) {
tmp = ctx->mem_base;
ctx->mem_base = tmp->next;
sasl_FREE(tmp);
}
/* Update allocation-related metadata */
ctx->allocated_values = ctx->used_values+1;
new_pool->unused =
new_pool->size - (ctx->allocated_values * sizeof(struct propval));
/* Setup pointers for the values array */
ctx->values = (struct propval *)new_pool->data;
ctx->prev_val = NULL;
/* Setup the pools */
ctx->mem_base = ctx->mem_cur = new_pool;
/* Reset list_end and data_end for the new memory pool */
ctx->list_end =
(char **)((char *)ctx->mem_base->data + ctx->allocated_values * sizeof(struct propval));
ctx->data_end = (char *)ctx->mem_base->data + ctx->mem_base->size;
return;
}
/*
* erase the value of a property
*/
void prop_erase(struct propctx *ctx, const char *name)
{
struct propval *val;
int i;
if(!ctx || !name) return;
for(val = ctx->values; val->name; val++) {
if(!strcmp(name,val->name)) {
if(!val->values) break;
/*
* Yes, this is casting away the const, but
* we should be okay because the only place this
* memory should be is in the proppool's
*/
for(i=0;val->values[i];i++) {
memset((void *)(val->values[i]),0,strlen(val->values[i]));
val->values[i] = NULL;
}
val->values = NULL;
val->nvalues = 0;
val->valsize = 0;
break;
}
}
return;
}
/****fetcher interfaces****/
/* format the requested property names into a string
* ctx -- context from prop_new()/prop_request()
* sep -- separator between property names (unused if none requested)
* seplen -- length of separator, if < 0 then strlen(sep) will be used
* outbuf -- output buffer
* outmax -- maximum length of output buffer including NUL terminator
* outlen -- set to length of output string excluding NUL terminator
* returns 0 on success and amount of additional space needed on failure
*/
int prop_format(struct propctx *ctx, const char *sep, int seplen,
char *outbuf, unsigned outmax, unsigned *outlen)
{
unsigned needed, flag = 0;
struct propval *val;
if (!ctx || !outbuf) return SASL_BADPARAM;
if (!sep) seplen = 0;
if (seplen < 0) seplen = (int) strlen(sep);
/* If seplen is negative now we have overflow.
But if you have a string longer than 2Gb, you are an idiot anyway */
if (seplen < 0) return SASL_BADPARAM;
needed = seplen * (ctx->used_values - 1);
for(val = ctx->values; val->name; val++) {
needed += (unsigned) strlen(val->name);
}
if(!outmax) return (needed + 1); /* Because of unsigned funkiness */
if(needed > (outmax - 1)) return (needed - (outmax - 1));
*outbuf = '\0';
if(outlen) *outlen = needed;
if(needed == 0) return SASL_OK;
for(val = ctx->values; val->name; val++) {
if(seplen && flag) {
strncat(outbuf, sep, seplen);
} else {
flag = 1;
}
strcat(outbuf, val->name);
}
return SASL_OK;
}
/* add a property value to the context
* ctx -- context from prop_new()/prop_request()
* name -- name of property to which value will be added
* if NULL, add to the same name as previous prop_set/setvals call
* value -- a value for the property; will be copied into context
* if NULL, remove existing values
* vallen -- length of value, if <= 0 then strlen(value) will be used
*/
int prop_set(struct propctx *ctx, const char *name,
const char *value, int vallen)
{
struct propval *cur;
if(!ctx) return SASL_BADPARAM;
if(!name && !ctx->prev_val) return SASL_BADPARAM;
if(name) {
struct propval *val;
ctx->prev_val = NULL;
for(val = ctx->values; val->name; val++) {
if(!strcmp(name,val->name)){
ctx->prev_val = val;
break;
}
}
/* Couldn't find it! */
if(!ctx->prev_val) return SASL_BADPARAM;
}
cur = ctx->prev_val;
if(name) /* New Entry */ {
unsigned nvalues = 1; /* 1 for NULL entry */
const char **old_values = NULL;
char **tmp, **tmp2;
size_t size;
if(cur->values) {
if(!value) {
/* If we would be adding a null value, then we are done */
return SASL_OK;
}
old_values = cur->values;
tmp = (char **)cur->values;
while(*tmp) {
nvalues++;
tmp++;
}
}
if(value) {
nvalues++; /* for the new value */
}
size = nvalues * sizeof(char*);
if(size > ctx->mem_cur->unused) {
size_t needed;
for(needed = ctx->mem_cur->size * 2; needed < size; needed *= 2);
/* Allocate a new proppool */
ctx->mem_cur->next = alloc_proppool(needed);
if(!ctx->mem_cur->next) return SASL_NOMEM;
ctx->mem_cur = ctx->mem_cur->next;
ctx->list_end = (char **)ctx->mem_cur->data;
ctx->data_end = ctx->mem_cur->data + needed;
}
/* Grab the memory */
ctx->mem_cur->unused -= size;
cur->values = (const char **)ctx->list_end;
cur->values[nvalues - 1] = NULL;
/* Finish updating the context */
ctx->list_end = (char **)(cur->values + nvalues);
/* If we don't have an actual value to fill in, we are done */
if(!value)
return SASL_OK;
tmp2 = (char **)cur->values;
if(old_values) {
tmp = (char **)old_values;
while(*tmp) {
*tmp2 = *tmp;
tmp++; tmp2++;
}
}
/* Now allocate the last entry */
if(vallen <= 0)
size = (size_t)(strlen(value) + 1);
else
size = (size_t)(vallen + 1);
if(size > ctx->mem_cur->unused) {
size_t needed;
needed = ctx->mem_cur->size * 2;
while(needed < size) {
needed *= 2;
}
/* Allocate a new proppool */
ctx->mem_cur->next = alloc_proppool(needed);
if(!ctx->mem_cur->next) return SASL_NOMEM;
ctx->mem_cur = ctx->mem_cur->next;
ctx->list_end = (char **)ctx->mem_cur->data;
ctx->data_end = ctx->mem_cur->data + needed;
}
/* Update the data_end pointer */
ctx->data_end -= size;
ctx->mem_cur->unused -= size;
/* Copy and setup the new value! */
memcpy(ctx->data_end, value, size-1);
ctx->data_end[size - 1] = '\0';
cur->values[nvalues - 2] = ctx->data_end;
cur->nvalues++;
cur->valsize += ((unsigned) size - 1);
} else /* Appending an entry */ {
char **tmp;
size_t size;
/* If we are setting it to be NULL, we are done */
if(!value) return SASL_OK;
size = sizeof(char*);
/* Is it in the current pool, and will it fit in the unused space? */
if(size > ctx->mem_cur->unused &&
(void *)cur->values > (void *)(ctx->mem_cur->data) &&
(void *)cur->values < (void *)(ctx->mem_cur->data + ctx->mem_cur->size)) {
/* recursively call the not-fast way */
return prop_set(ctx, cur->name, value, vallen);
}
/* Note the invariant: the previous value list must be
at the top of the CURRENT pool at this point */
/* Grab the memory */
ctx->mem_cur->unused -= size;
ctx->list_end++;
*(ctx->list_end - 1) = NULL;
tmp = (ctx->list_end - 2);
/* Now allocate the last entry */
if(vallen <= 0)
size = strlen(value) + 1;
else
size = vallen + 1;
if(size > ctx->mem_cur->unused) {
size_t needed;
needed = ctx->mem_cur->size * 2;
while(needed < size) {
needed *= 2;
}
/* Allocate a new proppool */
ctx->mem_cur->next = alloc_proppool(needed);
if(!ctx->mem_cur->next) return SASL_NOMEM;
ctx->mem_cur = ctx->mem_cur->next;
ctx->list_end = (char **)ctx->mem_cur->data;
ctx->data_end = ctx->mem_cur->data + needed;
}
/* Update the data_end pointer */
ctx->data_end -= size;
ctx->mem_cur->unused -= size;
/* Copy and setup the new value! */
memcpy(ctx->data_end, value, size-1);
ctx->data_end[size - 1] = '\0';
*tmp = ctx->data_end;
cur->nvalues++;
cur->valsize += ((unsigned) size - 1);
}
return SASL_OK;
}
/* set the values for a property
* ctx -- context from prop_new()/prop_request()
* name -- name of property to which value will be added
* if NULL, add to the same name as previous prop_set/setvals call
* values -- array of values, ending in NULL. Each value is a NUL terminated
* string
*/
int prop_setvals(struct propctx *ctx, const char *name,
const char **values)
{
const char **val = values;
int result = SASL_OK;
if(!ctx) return SASL_BADPARAM;
/* If they want us to add no values, we can do that */
if(!values) return SASL_OK;
/* Basically, use prop_set to do all our dirty work for us */
if(name) {
result = prop_set(ctx, name, *val, 0);
val++;
}
for(;*val;val++) {
if(result != SASL_OK) return result;
result = prop_set(ctx, NULL, *val,0);
}
return result;
}
/* Request a set of auxiliary properties
* conn connection context
* propnames list of auxiliary property names to request ending with
* NULL.
*
* Subsequent calls will add items to the request list. Call with NULL
* to clear the request list.
*
* errors
* SASL_OK -- success
* SASL_BADPARAM -- bad count/conn parameter
* SASL_NOMEM -- out of memory
*/
int sasl_auxprop_request(sasl_conn_t *conn, const char **propnames)
{
int result;
sasl_server_conn_t *sconn;
if(!conn) return SASL_BADPARAM;
if(conn->type != SASL_CONN_SERVER)
PARAMERROR(conn);
sconn = (sasl_server_conn_t *)conn;
if(!propnames) {
prop_clear(sconn->sparams->propctx,1);
return SASL_OK;
}
result = prop_request(sconn->sparams->propctx, propnames);
RETURN(conn, result);
}
/* Returns current auxiliary property context.
* Use functions in prop.h to access content
*
* if authentication hasn't completed, property values may be empty/NULL
*
* properties not recognized by active plug-ins will be left empty/NULL
*
* returns NULL if conn is invalid.
*/
struct propctx *sasl_auxprop_getctx(sasl_conn_t *conn)
{
sasl_server_conn_t *sconn;
if(!conn || conn->type != SASL_CONN_SERVER) return NULL;
sconn = (sasl_server_conn_t *)conn;
return sconn->sparams->propctx;
}
/* add an auxiliary property plugin */
int sasl_auxprop_add_plugin(const char *plugname,
sasl_auxprop_init_t *auxpropfunc)
{
int result, out_version;
auxprop_plug_list_t *new_item;
sasl_auxprop_plug_t *plug;
result = auxpropfunc(sasl_global_utils, SASL_AUXPROP_PLUG_VERSION,
&out_version, &plug, plugname);
/* Check if out_version is too old.
We only support the current at the moment */
if (result == SASL_OK && out_version < SASL_AUXPROP_PLUG_VERSION) {
result = SASL_BADVERS;
}
if(result != SASL_OK) {
_sasl_log(NULL, SASL_LOG_ERR, "auxpropfunc error %s\n",
sasl_errstring(result, NULL, NULL));
return result;
}
/* We require that this function is implemented */
if(!plug->auxprop_lookup) return SASL_BADPROT;
new_item = sasl_ALLOC(sizeof(auxprop_plug_list_t));
if(!new_item) return SASL_NOMEM;
/* These will load from least-important to most important */
new_item->plug = plug;
new_item->next = auxprop_head;
auxprop_head = new_item;
return SASL_OK;
}
void _sasl_auxprop_free()
{
auxprop_plug_list_t *ptr, *ptr_next;
for(ptr = auxprop_head; ptr; ptr = ptr_next) {
ptr_next = ptr->next;
if(ptr->plug->auxprop_free)
ptr->plug->auxprop_free(ptr->plug->glob_context,
sasl_global_utils);
sasl_FREE(ptr);
}
auxprop_head = NULL;
}
/* Return the updated account status based on the current ("so far") and
the specific status returned by the latest auxprop call */
static int
_sasl_account_status (int current_status,
int specific_status)
{
switch (specific_status) {
case SASL_NOVERIFY:
specific_status = SASL_OK;
/* fall through */
case SASL_OK:
if (current_status == SASL_NOMECH ||
current_status == SASL_NOUSER) {
current_status = specific_status;
}
break;
case SASL_NOUSER:
if (current_status == SASL_NOMECH) {
current_status = specific_status;
}
break;
/* NOTE: The disabled flag sticks, unless we hit an error */
case SASL_DISABLED:
if (current_status == SASL_NOMECH ||
current_status == SASL_NOUSER ||
current_status == SASL_OK) {
current_status = specific_status;
}
break;
case SASL_NOMECH:
/* ignore */
break;
/* SASL_UNAVAIL overrides everything */
case SASL_UNAVAIL:
current_status = specific_status;
break;
default:
current_status = specific_status;
break;
}
return (current_status);
}
/* Do the callbacks for auxprop lookups */
int _sasl_auxprop_lookup(sasl_server_params_t *sparams,
unsigned flags,
const char *user, unsigned ulen)
{
sasl_getopt_t *getopt;
int ret, found = 0;
void *context;
const char *plist = NULL;
auxprop_plug_list_t *ptr;
int result = SASL_NOMECH;
if(_sasl_getcallback(sparams->utils->conn,
SASL_CB_GETOPT, &getopt, &context) == SASL_OK) {
ret = getopt(context, NULL, "auxprop_plugin", &plist, NULL);
if(ret != SASL_OK) plist = NULL;
}
if(!plist) {
/* Do lookup in all plugins */
/* TODO: Ideally, each auxprop plugin should be marked if its failure
should be ignored or treated as a fatal error of the whole lookup. */
for(ptr = auxprop_head; ptr; ptr = ptr->next) {
found=1;
ret = ptr->plug->auxprop_lookup(ptr->plug->glob_context,
sparams, flags, user, ulen);
result = _sasl_account_status (result, ret);
}
} else {
char *pluginlist = NULL, *freeptr = NULL, *thisplugin = NULL;
if(_sasl_strdup(plist, &pluginlist, NULL) != SASL_OK) return SASL_NOMEM;
thisplugin = freeptr = pluginlist;
/* Do lookup in all *specified* plugins, in order */
while(*thisplugin) {
char *p;
int last=0;
while(*thisplugin && isspace((int)*thisplugin)) thisplugin++;
if(!(*thisplugin)) break;
for(p = thisplugin;*p != '\0' && !isspace((int)*p); p++);
if(*p == '\0') last = 1;
else *p='\0';
for(ptr = auxprop_head; ptr; ptr = ptr->next) {
/* Skip non-matching plugins */
if(!ptr->plug->name
|| strcasecmp(ptr->plug->name, thisplugin))
continue;
found=1;
ret = ptr->plug->auxprop_lookup(ptr->plug->glob_context,
sparams, flags, user, ulen);
result = _sasl_account_status (result, ret);
}
if(last) break;
thisplugin = p+1;
}
sasl_FREE(freeptr);
}
if(!found) {
_sasl_log(sparams->utils->conn, SASL_LOG_DEBUG,
"could not find auxprop plugin, was searching for '%s'",
plist ? plist : "[all]");
}
return result;
}
/* Do the callbacks for auxprop stores */
int sasl_auxprop_store(sasl_conn_t *conn,
struct propctx *ctx, const char *user)
{
sasl_getopt_t *getopt;
int ret;
void *context;
const char *plist = NULL;
auxprop_plug_list_t *ptr;
sasl_server_params_t *sparams = NULL;
unsigned userlen = 0;
int num_constraint_violations = 0;
int total_plugins = 0;
if (ctx) {
if (!conn || !user)
return SASL_BADPARAM;
sparams = ((sasl_server_conn_t *) conn)->sparams;
userlen = (unsigned) strlen(user);
}
/* Pickup getopt callback from the connection, if conn is not NULL */
if(_sasl_getcallback(conn, SASL_CB_GETOPT, &getopt, &context) == SASL_OK) {
ret = getopt(context, NULL, "auxprop_plugin", &plist, NULL);
if(ret != SASL_OK) plist = NULL;
}
ret = SASL_OK;
if(!plist) {
/* Do store in all plugins */
for(ptr = auxprop_head; ptr && ret == SASL_OK; ptr = ptr->next) {
total_plugins++;
if (ptr->plug->auxprop_store) {
ret = ptr->plug->auxprop_store(ptr->plug->glob_context,
sparams, ctx, user, userlen);
if (ret == SASL_CONSTRAINT_VIOLAT) {
ret = SASL_OK;
num_constraint_violations++;
}
}
}
} else {
char *pluginlist = NULL, *freeptr = NULL, *thisplugin = NULL;
if(_sasl_strdup(plist, &pluginlist, NULL) != SASL_OK) return SASL_FAIL;
thisplugin = freeptr = pluginlist;
/* Do store in all *specified* plugins, in order */
while(*thisplugin) {
char *p;
int last=0;
while(*thisplugin && isspace((int)*thisplugin)) thisplugin++;
if(!(*thisplugin)) break;
for(p = thisplugin;*p != '\0' && !isspace((int)*p); p++);
if(*p == '\0') last = 1;
else *p='\0';
for(ptr = auxprop_head; ptr && ret == SASL_OK; ptr = ptr->next) {
/* Skip non-matching plugins */
if((!ptr->plug->name
|| strcasecmp(ptr->plug->name, thisplugin)))
continue;
total_plugins++;
if (ptr->plug->auxprop_store) {
ret = ptr->plug->auxprop_store(ptr->plug->glob_context,
sparams, ctx, user, userlen);
if (ret == SASL_CONSTRAINT_VIOLAT) {
ret = SASL_OK;
num_constraint_violations++;
}
}
}
if(last) break;
thisplugin = p+1;
}
sasl_FREE(freeptr);
}
if(total_plugins == 0) {
_sasl_log(NULL, SASL_LOG_ERR,
"could not find auxprop plugin, was searching for %s",
plist ? plist : "[all]");
return SASL_FAIL;
} else if (total_plugins == num_constraint_violations) {
ret = SASL_CONSTRAINT_VIOLAT;
}
return ret;
}
/* It would be nice if we can show other information like Author, Company, Year, plugin version */
static void
_sasl_print_mechanism (
sasl_auxprop_plug_t *m,
sasl_info_callback_stage_t stage,
void *rock __attribute__((unused))
)
{
if (stage == SASL_INFO_LIST_START) {
printf ("List of auxprop plugins follows\n");
return;
} else if (stage == SASL_INFO_LIST_END) {
return;
}
/* Process the mechanism */
printf ("Plugin \"%s\" ", m->name);
#ifdef NOT_YET
switch (m->condition) {
case SASL_OK:
printf ("[loaded]");
break;
case SASL_CONTINUE:
printf ("[delayed]");
break;
case SASL_NOUSER:
printf ("[no users]");
break;
default:
printf ("[unknown]");
break;
}
#endif
printf (", \tAPI version: %d\n", /* m->version */ SASL_AUXPROP_PLUG_VERSION);
/* TODO - Update for auxprop_export, etc. */
printf ("\tsupports store: %s\n",
(m->auxprop_store != NULL) ? "yes" : "no"
);
/* No features defined yet */
#ifdef NOT_YET
printf ("\n\tfeatures:");
#endif
printf ("\n");
}
/* Dump information about available auxprop plugins (separate functions are
used for canon and server authentication plugins) */
int auxprop_plugin_info (
const char *c_mech_list, /* space separated mechanism list or NULL for ALL */
auxprop_info_callback_t *info_cb,
void *info_cb_rock
)
{
auxprop_plug_list_t *m;
sasl_auxprop_plug_t plug_data;
char * cur_mech;
char *mech_list = NULL;
char * p;
if (info_cb == NULL) {
info_cb = _sasl_print_mechanism;
}
if (auxprop_head != NULL) {
info_cb (NULL, SASL_INFO_LIST_START, info_cb_rock);
if (c_mech_list == NULL) {
m = auxprop_head; /* m point to beginning of the list */
while (m != NULL) {
/* TODO: Need to be careful when dealing with auxprop_export, etc. */
memcpy (&plug_data, m->plug, sizeof(plug_data));
info_cb (&plug_data, SASL_INFO_LIST_MECH, info_cb_rock);
m = m->next;
}
} else {
mech_list = strdup(c_mech_list);
cur_mech = mech_list;
while (cur_mech != NULL) {
p = strchr (cur_mech, ' ');
if (p != NULL) {
*p = '\0';
p++;
}
m = auxprop_head; /* m point to beginning of the list */
while (m != NULL) {
if (strcasecmp (cur_mech, m->plug->name) == 0) {
memcpy (&plug_data, m->plug, sizeof(plug_data));
info_cb (&plug_data, SASL_INFO_LIST_MECH, info_cb_rock);
}
m = m->next;
}
cur_mech = p;
}
free (mech_list);
}
info_cb (NULL, SASL_INFO_LIST_END, info_cb_rock);
return (SASL_OK);
}
return (SASL_NOTINIT);
}
