/
rlm_sql.c
1521 lines (1239 loc) · 36.1 KB
/
rlm_sql.c
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/*
* This program is is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2 if the
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* $Id$
* @file rlm_sql.c
* @brief Implements SQL 'users' file, and SQL accounting.
*
* @copyright 2012 Arran Cudbard-Bell <a.cudbardb@freeradius.org>
* @copyright 2000,2006 The FreeRADIUS server project
* @copyright 2000 Mike Machado <mike@innercite.com>
* @copyright 2000 Alan DeKok <aland@ox.org>
*/
RCSID("$Id$")
#include <ctype.h>
#include <freeradius-devel/radiusd.h>
#include <freeradius-devel/modules.h>
#include <freeradius-devel/token.h>
#include <freeradius-devel/rad_assert.h>
#include <sys/stat.h>
#include "rlm_sql.h"
static const CONF_PARSER acct_section_config[] = {
{"reference", PW_TYPE_STRING_PTR,
offsetof(sql_acct_section_t, reference), NULL, ".query"},
{"logfile", PW_TYPE_STRING_PTR,
offsetof(sql_acct_section_t, logfile), NULL, NULL},
{NULL, -1, 0, NULL, NULL}
};
static const CONF_PARSER module_config[] = {
{"driver", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_driver_name), NULL, "rlm_sql_null"},
{"server", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_server), NULL, "localhost"},
{"port", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_port), NULL, ""},
{"login", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_login), NULL, ""},
{"password", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_password), NULL, ""},
{"radius_db", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,sql_db), NULL, "radius"},
{"read_groups", PW_TYPE_BOOLEAN,
offsetof(rlm_sql_config_t,read_groups), NULL, "yes"},
{"readclients", PW_TYPE_BOOLEAN,
offsetof(rlm_sql_config_t,do_clients), NULL, "no"},
{"deletestalesessions", PW_TYPE_BOOLEAN,
offsetof(rlm_sql_config_t,deletestalesessions), NULL, "yes"},
{"sql_user_name", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,query_user), NULL, ""},
{"logfile", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,logfile), NULL, NULL},
{"default_user_profile", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,default_profile), NULL, ""},
{"nas_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,nas_query), NULL,
"SELECT id,nasname,shortname,type,secret FROM nas"},
{"authorize_check_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,authorize_check_query), NULL, ""},
{"authorize_reply_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,authorize_reply_query), NULL, NULL},
{"authorize_group_check_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,authorize_group_check_query), NULL, ""},
{"authorize_group_reply_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,authorize_group_reply_query), NULL, ""},
{"group_membership_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,groupmemb_query), NULL, NULL},
#ifdef WITH_SESSION_MGMT
{"simul_count_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,simul_count_query), NULL, ""},
{"simul_verify_query", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,simul_verify_query), NULL, ""},
#endif
{"safe-characters", PW_TYPE_STRING_PTR,
offsetof(rlm_sql_config_t,allowed_chars), NULL,
"@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"},
/*
* This only works for a few drivers.
*/
{"query_timeout", PW_TYPE_INTEGER,
offsetof(rlm_sql_config_t,query_timeout), NULL, NULL},
{NULL, -1, 0, NULL, NULL}
};
/*
* Fall-Through checking function from rlm_files.c
*/
static int fallthrough(VALUE_PAIR *vp)
{
VALUE_PAIR *tmp;
tmp = pairfind(vp, PW_FALL_THROUGH, 0, TAG_ANY);
return tmp ? tmp->vp_integer : 0;
}
/*
* Yucky prototype.
*/
static int generate_sql_clients(rlm_sql_t *inst);
static size_t sql_escape_func(REQUEST *, char *out, size_t outlen, char const *in, void *arg);
/*
* SQL xlat function
*
* For selects the first value of the first column will be returned,
* for inserts, updates and deletes the number of rows afftected will be
* returned instead.
*/
static size_t sql_xlat(void *instance, REQUEST *request, char const *query, char *out, size_t freespace)
{
rlm_sql_handle_t *handle = NULL;
rlm_sql_row_t row;
rlm_sql_t *inst = instance;
size_t ret = 0;
/*
* Add SQL-User-Name attribute just in case it is needed
* We could search the string fmt for SQL-User-Name to see if this is
* needed or not
*/
sql_set_user(inst, request, NULL);
handle = sql_get_socket(inst);
if (!handle) {
return 0;
}
rlm_sql_query_log(inst, request, NULL, query);
/*
* If the query starts with any of the following prefixes,
* then return the number of rows affected
*/
if ((strncasecmp(query, "insert", 6) == 0) ||
(strncasecmp(query, "update", 6) == 0) ||
(strncasecmp(query, "delete", 6) == 0)) {
int numaffected;
char buffer[21]; /* 64bit max is 20 decimal chars + null byte */
if (rlm_sql_query(&handle, inst, query)) {
goto finish;
}
numaffected = (inst->module->sql_affected_rows)(handle, inst->config);
if (numaffected < 1) {
RDEBUG("SQL query affected no rows");
goto finish;
}
/*
* Don't chop the returned number if freespace is
* too small. This hack is necessary because
* some implementations of snprintf return the
* size of the written data, and others return
* the size of the data they *would* have written
* if the output buffer was large enough.
*/
snprintf(buffer, sizeof(buffer), "%d", numaffected);
ret = strlen(buffer);
if (ret >= freespace){
RDEBUG("rlm_sql (%s): Can't write result, insufficient string space", inst->config->xlat_name);
(inst->module->sql_finish_query)(handle, inst->config);
ret = 0;
goto finish;
}
memcpy(out, buffer, ret + 1); /* we did bounds checking above */
(inst->module->sql_finish_query)(handle, inst->config);
goto finish;
} /* else it's a SELECT statement */
if (rlm_sql_select_query(&handle, inst, query)){
goto finish;
}
ret = rlm_sql_fetch_row(&handle, inst);
if (ret) {
RDEBUG("SQL query failed");
(inst->module->sql_finish_select_query)(handle, inst->config);
goto finish;
}
row = handle->row;
if (!row) {
RDEBUG("SQL query returned no results");
(inst->module->sql_finish_select_query)(handle, inst->config);
goto finish;
}
if (!row[0]){
RDEBUG("Null value in first column");
(inst->module->sql_finish_select_query)(handle, inst->config);
goto finish;
}
ret = strlen(row[0]);
if (ret >= freespace){
RDEBUG("Insufficient string space");
(inst->module->sql_finish_select_query)(handle, inst->config);
ret = 0;
goto finish;
}
strlcpy(out, row[0], freespace);
RDEBUG("sql_xlat finished");
(inst->module->sql_finish_select_query)(handle, inst->config);
finish:
sql_release_socket(inst, handle);
return ret;
}
static int generate_sql_clients(rlm_sql_t *inst)
{
rlm_sql_handle_t *handle;
rlm_sql_row_t row;
RADCLIENT *c;
char *prefix_ptr = NULL;
unsigned int i = 0;
int numf = 0;
DEBUG("rlm_sql (%s): Processing generate_sql_clients",
inst->config->xlat_name);
DEBUG("rlm_sql (%s) in generate_sql_clients: query is %s",
inst->config->xlat_name, inst->config->nas_query);
handle = sql_get_socket(inst);
if (!handle)
return -1;
if (rlm_sql_select_query(&handle,inst, inst->config->nas_query)){
return -1;
}
while(rlm_sql_fetch_row(&handle, inst) == 0) {
i++;
row = handle->row;
if (!row)
break;
/*
* The return data for each row MUST be in the following order:
*
* 0. Row ID (currently unused)
* 1. Name (or IP address)
* 2. Shortname
* 3. Type
* 4. Secret
* 5. Virtual Server (optional)
*/
if (!row[0]){
ERROR("rlm_sql (%s): No row id found on pass %d",inst->config->xlat_name,i);
continue;
}
if (!row[1]){
ERROR("rlm_sql (%s): No nasname found for row %s",inst->config->xlat_name,row[0]);
continue;
}
if (!row[2]){
ERROR("rlm_sql (%s): No short name found for row %s",inst->config->xlat_name,row[0]);
continue;
}
if (!row[4]){
ERROR("rlm_sql (%s): No secret found for row %s",inst->config->xlat_name,row[0]);
continue;
}
DEBUG("rlm_sql (%s): Read entry nasname=%s,shortname=%s,secret=%s",inst->config->xlat_name,
row[1],row[2],row[4]);
c = talloc_zero(inst, RADCLIENT);
#ifdef WITH_DYNAMIC_CLIENTS
c->dynamic = 1;
#endif
/*
* Look for prefixes
*/
c->prefix = -1;
prefix_ptr = strchr(row[1], '/');
if (prefix_ptr) {
c->prefix = atoi(prefix_ptr + 1);
if ((c->prefix < 0) || (c->prefix > 128)) {
ERROR("rlm_sql (%s): Invalid Prefix value '%s' for IP.",
inst->config->xlat_name, prefix_ptr + 1);
talloc_free(c);
continue;
}
/* Replace '/' with '\0' */
*prefix_ptr = '\0';
}
/*
* Always get the numeric representation of IP
*/
if (ip_hton(row[1], AF_UNSPEC, &c->ipaddr) < 0) {
ERROR("rlm_sql (%s): Failed to look up hostname %s: %s",
inst->config->xlat_name,
row[1], fr_strerror());
talloc_free(c);
continue;
} else {
char buffer[256];
ip_ntoh(&c->ipaddr, buffer, sizeof(buffer));
c->longname = talloc_strdup(c, buffer);
}
if (c->prefix < 0) switch (c->ipaddr.af) {
case AF_INET:
c->prefix = 32;
break;
case AF_INET6:
c->prefix = 128;
break;
default:
break;
}
/*
* Other values (secret, shortname, nastype, virtual_server)
*/
c->secret = talloc_strdup(c, row[4]);
c->shortname = talloc_strdup(c, row[2]);
if(row[3] != NULL)
c->nastype = strdup(row[3]);
numf = (inst->module->sql_num_fields)(handle, inst->config);
if ((numf > 5) && (row[5] != NULL) && *row[5]) c->server = strdup(row[5]);
DEBUG("rlm_sql (%s): Adding client %s (%s, server=%s) to clients list",
inst->config->xlat_name,
c->longname,c->shortname, c->server ? c->server : "<none>");
if (!client_add(NULL, c)) {
sql_release_socket(inst, handle);
DEBUG("rlm_sql (%s): Failed to add client %s (%s) to clients list. Maybe there's a duplicate?",
inst->config->xlat_name,
c->longname,c->shortname);
client_free(c);
return -1;
}
}
(inst->module->sql_finish_select_query)(handle, inst->config);
sql_release_socket(inst, handle);
return 0;
}
/*
* Translate the SQL queries.
*/
static size_t sql_escape_func(UNUSED REQUEST *request, char *out, size_t outlen,
char const *in, void *arg)
{
rlm_sql_t *inst = arg;
size_t len = 0;
while (in[0]) {
/*
* Non-printable characters get replaced with their
* mime-encoded equivalents.
*/
if ((in[0] < 32) ||
strchr(inst->config->allowed_chars, *in) == NULL) {
/*
* Only 3 or less bytes available.
*/
if (outlen <= 3) {
break;
}
snprintf(out, outlen, "=%02X", (unsigned char) in[0]);
in++;
out += 3;
outlen -= 3;
len += 3;
continue;
}
/*
* Only one byte left.
*/
if (outlen <= 1) {
break;
}
/*
* Allowed character.
*/
*out = *in;
out++;
in++;
outlen--;
len++;
}
*out = '\0';
return len;
}
/*
* Set the SQL user name.
*
* We don't call the escape function here. The resulting string
* will be escaped later in the queries xlat so we don't need to
* escape it twice. (it will make things wrong if we have an
* escape candidate character in the username)
*/
int sql_set_user(rlm_sql_t *inst, REQUEST *request, char const *username)
{
char *expanded = NULL;
VALUE_PAIR *vp = NULL;
char const *sqluser;
ssize_t len;
if (username != NULL) {
sqluser = username;
} else if (*inst->config->query_user) {
sqluser = inst->config->query_user;
} else {
return 0;
}
len = radius_axlat(&expanded, request, sqluser, NULL, NULL);
if (len < 0) {
return -1;
}
vp = pairalloc(request->packet, inst->sql_user);
vp->op = T_OP_SET;
pairstrcpy(vp, expanded); /* FIXME: pairsteal */
pairadd(&request->packet->vps, vp);
talloc_free(expanded);
RDEBUG2("SQL-User-Name updated");
return 0;
}
static int sql_get_grouplist(rlm_sql_t *inst, rlm_sql_handle_t *handle, REQUEST *request,
rlm_sql_grouplist_t **phead)
{
char *expanded = NULL;
int num_groups = 0;
rlm_sql_row_t row;
rlm_sql_grouplist_t *entry;
int ret;
/* NOTE: sql_set_user should have been run before calling this function */
entry = *phead = NULL;
if (!inst->config->groupmemb_query || (inst->config->groupmemb_query[0] == 0)) {
return 0;
}
if (radius_axlat(&expanded, request, inst->config->groupmemb_query, sql_escape_func, inst) < 0) {
return -1;
}
ret = rlm_sql_select_query(&handle, inst, expanded);
talloc_free(expanded);
if (ret < 0) {
return -1;
}
while (rlm_sql_fetch_row(&handle, inst) == 0) {
row = handle->row;
if (!row)
break;
if (!row[0]){
RDEBUG("row[0] returned NULL");
(inst->module->sql_finish_select_query)(handle, inst->config);
talloc_free(entry);
return -1;
}
if (!*phead) {
*phead = talloc_zero(handle, rlm_sql_grouplist_t);
entry = *phead;
} else {
entry->next = talloc_zero(*phead, rlm_sql_grouplist_t);
entry = entry->next;
}
entry->next = NULL;
entry->name = talloc_strdup(entry, row[0]);
}
(inst->module->sql_finish_select_query)(handle, inst->config);
return num_groups;
}
/*
* sql groupcmp function. That way we can do group comparisons (in the users file for example)
* with the group memberships reciding in sql
* The group membership query should only return one element which is the username. The returned
* username will then be checked with the passed check string.
*/
static int sql_groupcmp(void *instance, REQUEST *request, UNUSED VALUE_PAIR *request_vp, VALUE_PAIR *check,
UNUSED VALUE_PAIR *check_pairs, UNUSED VALUE_PAIR **reply_pairs)
{
rlm_sql_handle_t *handle;
rlm_sql_t *inst = instance;
rlm_sql_grouplist_t *head, *entry;
RDEBUG("sql_groupcmp");
if (!check || !check->length){
RDEBUG("sql_groupcmp: Illegal group name");
return 1;
}
if (!request){
RDEBUG("sql_groupcmp: NULL request");
return 1;
}
/*
* Set, escape, and check the user attr here
*/
if (sql_set_user(inst, request, NULL) < 0)
return 1;
/*
* Get a socket for this lookup
*/
handle = sql_get_socket(inst);
if (!handle) {
return 1;
}
/*
* Get the list of groups this user is a member of
*/
if (sql_get_grouplist(inst, handle, request, &head) < 0) {
REDEBUG("Error getting group membership");
sql_release_socket(inst, handle);
return 1;
}
for (entry = head; entry != NULL; entry = entry->next) {
if (strcmp(entry->name, check->vp_strvalue) == 0){
RDEBUG("sql_groupcmp finished: User is a member of group %s",
check->vp_strvalue);
talloc_free(head);
sql_release_socket(inst, handle);
return 0;
}
}
/* Free the grouplist */
talloc_free(head);
sql_release_socket(inst,handle);
RDEBUG("sql_groupcmp finished: User is NOT a member of group %s",
check->vp_strvalue);
return 1;
}
static rlm_rcode_t rlm_sql_process_groups(rlm_sql_t *inst, REQUEST *request, rlm_sql_handle_t *handle,
int *dofallthrough)
{
rlm_rcode_t rcode = RLM_MODULE_NOOP;
VALUE_PAIR *check_tmp = NULL, *reply_tmp = NULL, *sql_group = NULL;
rlm_sql_grouplist_t *head = NULL, *entry = NULL;
char *expanded = NULL;
int rows;
/*
* Get the list of groups this user is a member of
*/
if (sql_get_grouplist(inst, handle, request, &head) < 0) {
REDEBUG("Error retrieving group list");
return RLM_MODULE_FAIL;
}
for (entry = head; entry != NULL && *dofallthrough != 0; entry = entry->next) {
/*
* Add the Sql-Group attribute to the request list so we know
* which group we're retrieving attributes for
*/
sql_group = pairmake_packet("Sql-Group", entry->name, T_OP_EQ);
if (!sql_group) {
REDEBUG("Error creating Sql-Group attribute");
rcode = RLM_MODULE_FAIL;
goto finish;
}
/*
* Expand the group query
*/
if (radius_axlat(&expanded, request, inst->config->authorize_group_check_query, sql_escape_func,
inst) < 0) {
REDEBUG("Error generating query");
rcode = RLM_MODULE_FAIL;
goto finish;
}
rows = sql_getvpdata(inst, &handle, request, &check_tmp, expanded);
TALLOC_FREE(expanded);
if (rows < 0) {
REDEBUG("Error retrieving check pairs for group %s", entry->name);
rcode = RLM_MODULE_FAIL;
goto finish;
}
/*
* If we got check rows we need to process them before we decide to process the reply rows
*/
if ((rows > 0) && (paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) != 0)) {
pairfree(&check_tmp);
pairdelete(&request->packet->vps, PW_SQL_GROUP, 0, TAG_ANY);
continue;
}
RDEBUG2("User found in= RLM_MODULE_OK; group %s", entry->name);
/*
* Now get the reply pairs since the paircompare matched
*/
if (radius_axlat(&expanded, request, inst->config->authorize_group_reply_query, sql_escape_func,
inst) < 0) {
REDEBUG("Error generating query");
rcode = RLM_MODULE_FAIL;
goto finish;
}
if (sql_getvpdata(inst, &handle, request->reply, &reply_tmp, expanded) < 0) {
REDEBUG("Error retrieving reply pairs for group %s", entry->name);
rcode = RLM_MODULE_FAIL;
goto finish;
}
*dofallthrough = fallthrough(reply_tmp);
pairdelete(&request->packet->vps, PW_SQL_GROUP, 0, TAG_ANY);
radius_xlat_move(request, &request->reply->vps, &reply_tmp);
reply_tmp = NULL;
radius_xlat_move(request, &request->config_items, &check_tmp);
check_tmp = NULL;
}
finish:
talloc_free(expanded);
talloc_free(head);
pairdelete(&request->packet->vps, PW_SQL_GROUP, 0, TAG_ANY);
pairfree(&check_tmp);
return rcode;
}
static int mod_detach(void *instance)
{
rlm_sql_t *inst = instance;
if (inst->config) {
if (inst->pool) sql_poolfree(inst);
}
if (inst->handle) {
#if 0
/*
* FIXME: Call the modules 'destroy' function?
*/
dlclose(inst->handle); /* ignore any errors */
#endif
}
return 0;
}
static int parse_sub_section(CONF_SECTION *parent,
rlm_sql_t *inst,
sql_acct_section_t **config,
rlm_components_t comp)
{
CONF_SECTION *cs;
char const *name = section_type_value[comp].section;
cs = cf_section_sub_find(parent, name);
if (!cs) {
INFO("rlm_sql (%s): Couldn't find configuration for "
"%s, will return NOOP for calls from this section",
inst->config->xlat_name, name);
return 0;
}
*config = talloc_zero(parent, sql_acct_section_t);
if (cf_section_parse(cs, *config, acct_section_config) < 0) {
ERROR("rlm_sql (%s): Couldn't find configuration for "
"%s, will return NOOP for calls from this section",
inst->config->xlat_name, name);
return -1;
}
(*config)->cs = cs;
return 0;
}
static int mod_instantiate(CONF_SECTION *conf, void *instance)
{
rlm_sql_t *inst = instance;
/*
* Hack...
*/
inst->config = &inst->myconfig;
inst->cs = conf;
inst->config->xlat_name = cf_section_name2(conf);
if (!inst->config->xlat_name) {
inst->config->xlat_name = cf_section_name1(conf);
} else {
char *group_name;
const DICT_ATTR *dattr;
ATTR_FLAGS flags;
/*
* Allocate room for <instance>-SQL-Group
*/
group_name = talloc_asprintf(inst, "%s-SQL-Group", inst->config->xlat_name);
DEBUG("rlm_sql (%s): Creating new attribute %s",
inst->config->xlat_name, group_name);
memset(&flags, 0, sizeof(flags));
if (dict_addattr(group_name, -1, 0, PW_TYPE_STRING, flags) < 0) {
ERROR("rlm_sql (%s): Failed to create "
"attribute %s: %s", inst->config->xlat_name, group_name,
fr_strerror());
return -1;
}
dattr = dict_attrbyname(group_name);
if (!dattr) {
ERROR("rlm_sql (%s): Failed to create "
"attribute %s", inst->config->xlat_name, group_name);
return -1;
}
if (inst->config->groupmemb_query &&
inst->config->groupmemb_query[0]) {
DEBUG("rlm_sql (%s): Registering sql_groupcmp for %s",
inst->config->xlat_name, group_name);
paircompare_register(dattr->attr, PW_USER_NAME,
sql_groupcmp, inst);
}
}
rad_assert(inst->config->xlat_name);
/*
* If the configuration parameters can't be parsed, then fail.
*/
if ((parse_sub_section(conf, inst,
&inst->config->accounting,
RLM_COMPONENT_ACCT) < 0) ||
(parse_sub_section(conf, inst,
&inst->config->postauth,
RLM_COMPONENT_POST_AUTH) < 0)) {
cf_log_err_cs(conf, "Invalid configuration");
return -1;
}
/*
* Cache the SQL-User-Name DICT_ATTR, so we can be slightly
* more efficient about creating SQL-User-Name attributes.
*/
inst->sql_user = dict_attrbyname("SQL-User-Name");
if (!inst->sql_user) {
return -1;
}
/*
* Export these methods, too. This avoids RTDL_GLOBAL.
*/
inst->sql_set_user = sql_set_user;
inst->sql_get_socket = sql_get_socket;
inst->sql_release_socket = sql_release_socket;
inst->sql_escape_func = sql_escape_func;
inst->sql_query = rlm_sql_query;
inst->sql_select_query = rlm_sql_select_query;
inst->sql_fetch_row = rlm_sql_fetch_row;
/*
* Register the SQL xlat function
*/
xlat_register(inst->config->xlat_name, sql_xlat, sql_escape_func, inst);
/*
* Sanity check for crazy people.
*/
if (strncmp(inst->config->sql_driver_name, "rlm_sql_", 8) != 0) {
ERROR("rlm_sql (%s): \"%s\" is NOT an SQL driver!",
inst->config->xlat_name, inst->config->sql_driver_name);
return -1;
}
/*
* Load the appropriate driver for our database
*/
inst->handle = lt_dlopenext(inst->config->sql_driver_name);
if (!inst->handle) {
ERROR("Could not link driver %s: %s",
inst->config->sql_driver_name,
dlerror());
ERROR("Make sure it (and all its dependent libraries!)"
"are in the search path of your system's ld.");
return -1;
}
inst->module = (rlm_sql_module_t *) dlsym(inst->handle,
inst->config->sql_driver_name);
if (!inst->module) {
ERROR("Could not link symbol %s: %s",
inst->config->sql_driver_name,
dlerror());
return -1;
}
if (inst->module->mod_instantiate) {
CONF_SECTION *cs;
char const *name;
name = strrchr(inst->config->sql_driver_name, '_');
if (!name) {
name = inst->config->sql_driver_name;
} else {
name++;
}
cs = cf_section_sub_find(conf, name);
if (!cs) {
cs = cf_section_alloc(conf, name, NULL);
if (!cs) {
return -1;
}
}
/*
* It's up to the driver to register a destructor
*/
if (inst->module->mod_instantiate(cs, inst->config) < 0) {
return -1;
}
}
INFO("rlm_sql (%s): Driver %s (module %s) loaded and linked",
inst->config->xlat_name, inst->config->sql_driver_name,
inst->module->name);
/*
* Initialise the connection pool for this instance
*/
INFO("rlm_sql (%s): Attempting to connect to database \"%s\"",
inst->config->xlat_name, inst->config->sql_db);
if (sql_socket_pool_init(inst) < 0) return -1;
if (inst->config->groupmemb_query &&
inst->config->groupmemb_query[0]) {
paircompare_register(PW_SQL_GROUP, PW_USER_NAME, sql_groupcmp, inst);
}
if (inst->config->do_clients) {
if (generate_sql_clients(inst) == -1){
ERROR("Failed to load clients from SQL.");
return -1;
}
}
return RLM_MODULE_OK;
}
static rlm_rcode_t mod_authorize(void *instance, REQUEST * request)
{
int rcode = RLM_MODULE_NOTFOUND;
rlm_sql_t *inst = instance;
rlm_sql_handle_t *handle;
VALUE_PAIR *check_tmp = NULL;
VALUE_PAIR *reply_tmp = NULL;
VALUE_PAIR *user_profile = NULL;
int dofallthrough = 1;
int rows;
char *expanded = NULL;
/*
* Set, escape, and check the user attr here
*/
if (sql_set_user(inst, request, NULL) < 0) {
return RLM_MODULE_FAIL;
}
/*
* Reserve a socket
*
* After this point use goto error or goto release to cleanup socket temporary pairlists and
* temporary attributes.
*/
handle = sql_get_socket(inst);
if (!handle)
goto error;
/*
* Query the check table to find any conditions associated with this user/realm/whatever...
*/
if (inst->config->authorize_check_query && *inst->config->authorize_check_query) {
if (radius_axlat(&expanded, request, inst->config->authorize_check_query,
sql_escape_func, inst) < 0) {
REDEBUG("Error generating query");
goto error;
}
rows = sql_getvpdata(inst, &handle, request, &check_tmp, expanded);
if (rows < 0) {
REDEBUG("SQL query error");
goto error;
}
TALLOC_FREE(expanded);
/*
* Only do this if *some* check pairs were returned
*/
if ((rows > 0) &&
(paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) == 0)) {
RDEBUG2("User found in radcheck table");
radius_xlat_move(request, &request->config_items, &check_tmp);
rcode = RLM_MODULE_OK;
}
/*
* We only process reply table items if check conditions were verified
*/
else {
goto skipreply;
}
}
if (inst->config->authorize_reply_query && *inst->config->authorize_reply_query) {
/*