/*
* Xlat for %{config:section.subsection.attribute}
*/
static size_t xlat_config(void *instance, REQUEST *request,
const char *fmt, char *out,
size_t outlen)
{
const char *value;
CONF_PAIR *cp;
CONF_ITEM *ci;
char buffer[1024];
request = request; /* -Wunused */
instance = instance; /* -Wunused */
/*
* Expand it safely.
*/
if (!radius_xlat(buffer, sizeof(buffer), fmt, request, config_escape_func, NULL)) {
return 0;
}
ci = cf_reference_item(request->root->config,
request->root->config, buffer);
if (!ci || !cf_item_is_pair(ci)) {
*out = '\0';
return 0;
}
cp = cf_itemtopair(ci);
/*
* Ensure that we only copy what's necessary.
*
* If 'outlen' is too small, then the output is chopped to fit.
*/
value = cf_pair_value(cp);
if (!value) {
out[0] = '\0';
return 0;
}
if (outlen > strlen(value)) {
outlen = strlen(value) + 1;
}
strlcpy(out, value, outlen);
return strlen(out);
}
/*
* Xlat for %{config:section.subsection.attribute}
*/
static ssize_t xlat_config(UNUSED void *instance, REQUEST *request, char const *fmt, char *out, size_t outlen)
{
char const *value;
CONF_PAIR *cp;
CONF_ITEM *ci;
char buffer[1024];
/*
* Expand it safely.
*/
if (radius_xlat(buffer, sizeof(buffer), request, fmt, config_escape_func, NULL) < 0) {
return 0;
}
ci = cf_reference_item(request->root->config,
request->root->config, buffer);
if (!ci || !cf_item_is_pair(ci)) {
REDEBUG("Config item \"%s\" does not exist", fmt);
*out = '\0';
return -1;
}
cp = cf_itemtopair(ci);
/*
* Ensure that we only copy what's necessary.
*
* If 'outlen' is too small, then the output is chopped to fit.
*/
value = cf_pair_value(cp);
if (!value) {
out[0] = '\0';
return 0;
}
if (outlen > strlen(value)) {
outlen = strlen(value) + 1;
}
strlcpy(out, value, outlen);
return strlen(out);
}
/** Modify user's object in LDAP
*
* Process a modifcation map to update a user object in the LDAP directory.
*
* @param inst rlm_ldap instance.
* @param request Current request.
* @param section that holds the map to process.
* @return one of the RLM_MODULE_* values.
*/
static rlm_rcode_t user_modify(ldap_instance_t *inst, REQUEST *request, ldap_acct_section_t *section)
{
rlm_rcode_t rcode = RLM_MODULE_OK;
ldap_rcode_t status;
ldap_handle_t *conn = NULL;
LDAPMod *mod_p[LDAP_MAX_ATTRMAP + 1], mod_s[LDAP_MAX_ATTRMAP];
LDAPMod **modify = mod_p;
char *passed[LDAP_MAX_ATTRMAP * 2];
int i, total = 0, last_pass = 0;
char *expanded[LDAP_MAX_ATTRMAP];
int last_exp = 0;
char const *attr;
char const *value;
char const *dn;
/*
* Build our set of modifications using the update sections in
* the config.
*/
CONF_ITEM *ci;
CONF_PAIR *cp;
CONF_SECTION *cs;
FR_TOKEN op;
char path[MAX_STRING_LEN];
char *p = path;
rad_assert(section);
/*
* Locate the update section were going to be using
*/
if (section->reference[0] != '.') {
*p++ = '.';
}
if (radius_xlat(p, (sizeof(path) - (p - path)) - 1, request, section->reference, NULL, NULL) < 0) {
goto error;
}
ci = cf_reference_item(NULL, section->cs, path);
if (!ci) {
goto error;
}
if (!cf_item_is_section(ci)){
REDEBUG("Reference must resolve to a section");
goto error;
}
cs = cf_section_sub_find(cf_itemtosection(ci), "update");
if (!cs) {
REDEBUG("Section must contain 'update' subsection");
goto error;
}
/*
* Iterate over all the pairs, building our mods array
*/
for (ci = cf_item_find_next(cs, NULL); ci != NULL; ci = cf_item_find_next(cs, ci)) {
bool do_xlat = false;
if (total == LDAP_MAX_ATTRMAP) {
REDEBUG("Modify map size exceeded");
goto error;
}
if (!cf_item_is_pair(ci)) {
REDEBUG("Entry is not in \"ldap-attribute = value\" format");
goto error;
}
/*
* Retrieve all the information we need about the pair
*/
cp = cf_itemtopair(ci);
value = cf_pair_value(cp);
attr = cf_pair_attr(cp);
op = cf_pair_operator(cp);
if (!value || (*value == '\0')) {
RDEBUG("Empty value string, skipping attribute \"%s\"", attr);
continue;
}
switch (cf_pair_value_type(cp)) {
case T_BARE_WORD:
case T_SINGLE_QUOTED_STRING:
break;
case T_BACK_QUOTED_STRING:
case T_DOUBLE_QUOTED_STRING:
do_xlat = true;
break;
default:
rad_assert(0);
goto error;
}
if (op == T_OP_CMP_FALSE) {
passed[last_pass] = NULL;
} else if (do_xlat) {
char *exp = NULL;
if (radius_axlat(&exp, request, value, NULL, NULL) <= 0) {
RDEBUG("Skipping attribute \"%s\"", attr);
talloc_free(exp);
continue;
}
expanded[last_exp++] = exp;
passed[last_pass] = exp;
/*
* Static strings
*/
} else {
memcpy(&(passed[last_pass]), &value, sizeof(passed[last_pass]));
}
passed[last_pass + 1] = NULL;
mod_s[total].mod_values = &(passed[last_pass]);
last_pass += 2;
switch (op) {
/*
* T_OP_EQ is *NOT* supported, it is impossible to
* support because of the lack of transactions in LDAP
*/
case T_OP_ADD:
mod_s[total].mod_op = LDAP_MOD_ADD;
break;
case T_OP_SET:
mod_s[total].mod_op = LDAP_MOD_REPLACE;
break;
case T_OP_SUB:
case T_OP_CMP_FALSE:
mod_s[total].mod_op = LDAP_MOD_DELETE;
break;
#ifdef LDAP_MOD_INCREMENT
case T_OP_INCRM:
mod_s[total].mod_op = LDAP_MOD_INCREMENT;
break;
#endif
default:
REDEBUG("Operator '%s' is not supported for LDAP modify operations",
fr_int2str(fr_tokens, op, "<INVALID>"));
goto error;
}
/*
* Now we know the value is ok, copy the pointers into
* the ldapmod struct.
*/
memcpy(&(mod_s[total].mod_type), &attr, sizeof(mod_s[total].mod_type));
mod_p[total] = &(mod_s[total]);
total++;
}
if (total == 0) {
rcode = RLM_MODULE_NOOP;
goto release;
}
mod_p[total] = NULL;
conn = mod_conn_get(inst, request);
if (!conn) return RLM_MODULE_FAIL;
dn = rlm_ldap_find_user(inst, request, &conn, NULL, false, NULL, &rcode);
if (!dn || (rcode != RLM_MODULE_OK)) {
goto error;
}
status = rlm_ldap_modify(inst, request, &conn, dn, modify);
switch (status) {
case LDAP_PROC_SUCCESS:
break;
case LDAP_PROC_REJECT:
case LDAP_PROC_BAD_DN:
rcode = RLM_MODULE_INVALID;
break;
default:
rcode = RLM_MODULE_FAIL;
break;
};
release:
error:
/*
* Free up any buffers we allocated for xlat expansion
*/
for (i = 0; i < last_exp; i++) {
talloc_free(expanded[i]);
}
mod_conn_release(inst, conn);
return rcode;
}
/*
* Generic function for failing between a bunch of queries.
*
* Uses the same principle as rlm_linelog, expanding the 'reference' config
* item using xlat to figure out what query it should execute.
*
* If the reference matches multiple config items, and a query fails or
* doesn't update any rows, the next matching config item is used.
*
*/
static int acct_redundant(rlm_sql_t *inst, REQUEST *request, sql_acct_section_t *section)
{
rlm_rcode_t rcode = RLM_MODULE_OK;
rlm_sql_handle_t *handle = NULL;
int sql_ret;
int numaffected = 0;
CONF_ITEM *item;
CONF_PAIR *pair;
char const *attr = NULL;
char const *value;
char path[MAX_STRING_LEN];
char *p = path;
char *expanded = NULL;
rad_assert(section);
if (section->reference[0] != '.') {
*p++ = '.';
}
if (radius_xlat(p, sizeof(path) - (p - path), request, section->reference, NULL, NULL) < 0) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
item = cf_reference_item(NULL, section->cs, path);
if (!item) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
if (cf_item_is_section(item)){
REDEBUG("Sections are not supported as references");
rcode = RLM_MODULE_FAIL;
goto finish;
}
pair = cf_itemtopair(item);
attr = cf_pair_attr(pair);
RDEBUG2("Using query template '%s'", attr);
handle = sql_get_socket(inst);
if (!handle) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
sql_set_user(inst, request, NULL);
while (true) {
value = cf_pair_value(pair);
if (!value) {
RDEBUG("Ignoring null query");
rcode = RLM_MODULE_NOOP;
goto finish;
}
if (radius_axlat(&expanded, request, value, sql_escape_func, inst) < 0) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
if (!*expanded) {
RDEBUG("Ignoring null query");
rcode = RLM_MODULE_NOOP;
talloc_free(expanded);
goto finish;
}
rlm_sql_query_log(inst, request, section, expanded);
/*
* If rlm_sql_query cannot use the socket it'll try and
* reconnect. Reconnecting will automatically release
* the current socket, and try to select a new one.
*
* If we get RLM_SQL_RECONNECT it means all connections in the pool
* were exhausted, and we couldn't create a new connection,
* so we do not need to call sql_release_socket.
*/
sql_ret = rlm_sql_query(&handle, inst, expanded);
TALLOC_FREE(expanded);
if (sql_ret == RLM_SQL_RECONNECT) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
rad_assert(handle);
/*
* Assume all other errors are incidental, and just meant our
* operation failed and its not a client or SQL syntax error.
*
* @fixme We should actually be able to distinguish between key
* constraint violations (which we expect) and other errors.
*/
if (sql_ret == RLM_SQL_OK) {
numaffected = (inst->module->sql_affected_rows)(handle, inst->config);
if (numaffected > 0) {
break; /* A query succeeded, were done! */
}
RDEBUG("No records updated");
}
(inst->module->sql_finish_query)(handle, inst->config);
/*
* We assume all entries with the same name form a redundant
* set of queries.
*/
pair = cf_pair_find_next(section->cs, pair, attr);
if (!pair) {
RDEBUG("No additional queries configured");
rcode = RLM_MODULE_NOOP;
goto finish;
}
RDEBUG("Trying next query...");
}
(inst->module->sql_finish_query)(handle, inst->config);
finish:
talloc_free(expanded);
sql_release_socket(inst, handle);
return rcode;
}
static int do_linelog(void *instance, REQUEST *request)
{
int fd = -1;
char buffer[4096];
char line[1024];
rlm_linelog_t *inst = (rlm_linelog_t*) instance;
const char *value = inst->line;
if (inst->reference) {
CONF_ITEM *ci;
CONF_PAIR *cp;
radius_xlat(line + 1, sizeof(line) - 2, inst->reference,
request, linelog_escape_func);
line[0] = '.'; /* force to be in current section */
/*
* Don't allow it to go back up
*/
if (line[1] == '.') goto do_log;
ci = cf_reference_item(NULL, inst->cs, line);
if (!ci) {
RDEBUG2("No such entry \"%s\"", line);
return RLM_MODULE_NOOP;
}
if (!cf_item_is_pair(ci)) {
RDEBUG2("Entry \"%s\" is not a variable assignment ", line);
goto do_log;
}
cp = cf_itemtopair(ci);
value = cf_pair_value(cp);
if (!value) {
RDEBUG2("Entry \"%s\" has no value", line);
goto do_log;
}
/*
* Value exists, but is empty. Don't log anything.
*/
if (!*value) return RLM_MODULE_OK;
}
do_log:
/*
* FIXME: Check length.
*/
if (strcmp(inst->filename, "syslog") != 0) {
radius_xlat(buffer, sizeof(buffer), inst->filename, request,
NULL);
fd = open(buffer, O_WRONLY | O_APPEND | O_CREAT, 0600);
if (fd == -1) {
radlog(L_ERR, "rlm_linelog: Failed to open %s: %s",
buffer, strerror(errno));
return RLM_MODULE_FAIL;
}
}
/*
* FIXME: Check length.
*/
radius_xlat(line, sizeof(line) - 1, value, request,
linelog_escape_func);
if (fd >= 0) {
strcat(line, "\n");
write(fd, line, strlen(line));
close(fd);
#ifdef HAVE_SYSLOG_H
} else {
syslog(LOG_INFO, "%s", line);
#endif
}
return RLM_MODULE_OK;
}
static rlm_rcode_t do_linelog(void *instance, REQUEST *request)
{
int fd = -1;
char buffer[4096];
char *p;
char line[1024];
rlm_linelog_t *inst = (rlm_linelog_t*) instance;
const char *value = inst->line;
#ifdef HAVE_GRP_H
gid_t gid;
struct group *grp;
char *endptr;
#endif
if (inst->reference) {
CONF_ITEM *ci;
CONF_PAIR *cp;
radius_xlat(line + 1, sizeof(line) - 2, inst->reference,
request, linelog_escape_func, NULL);
line[0] = '.'; /* force to be in current section */
/*
* Don't allow it to go back up
*/
if (line[1] == '.') goto do_log;
ci = cf_reference_item(NULL, inst->cs, line);
if (!ci) {
RDEBUG2("No such entry \"%s\"", line);
return RLM_MODULE_NOOP;
}
if (!cf_item_is_pair(ci)) {
RDEBUG2("Entry \"%s\" is not a variable assignment ", line);
goto do_log;
}
cp = cf_itemtopair(ci);
value = cf_pair_value(cp);
if (!value) {
RDEBUG2("Entry \"%s\" has no value", line);
goto do_log;
}
/*
* Value exists, but is empty. Don't log anything.
*/
if (!*value) return RLM_MODULE_OK;
}
do_log:
/*
* FIXME: Check length.
*/
if (strcmp(inst->filename, "syslog") != 0) {
radius_xlat(buffer, sizeof(buffer), inst->filename, request,
NULL, NULL);
/* check path and eventually create subdirs */
p = strrchr(buffer,'/');
if (p) {
*p = '\0';
if (rad_mkdir(buffer, 0700) < 0) {
radlog_request(L_ERR, 0, request, "rlm_linelog: Failed to create directory %s: %s", buffer, strerror(errno));
return RLM_MODULE_FAIL;
}
*p = '/';
}
fd = open(buffer, O_WRONLY | O_APPEND | O_CREAT, inst->permissions);
if (fd == -1) {
radlog(L_ERR, "rlm_linelog: Failed to open %s: %s",
buffer, strerror(errno));
return RLM_MODULE_FAIL;
}
#ifdef HAVE_GRP_H
if (inst->group != NULL) {
gid = strtol(inst->group, &endptr, 10);
if (*endptr != '\0') {
grp = getgrnam(inst->group);
if (grp == NULL) {
RDEBUG2("Unable to find system group \"%s\"", inst->group);
goto skip_group;
}
gid = grp->gr_gid;
}
if (chown(buffer, -1, gid) == -1) {
RDEBUG2("Unable to change system group of \"%s\"", buffer);
}
}
#endif
}
skip_group:
/*
* FIXME: Check length.
*/
radius_xlat(line, sizeof(line) - 1, value, request,
linelog_escape_func, NULL);
if (fd >= 0) {
strcat(line, "\n");
write(fd, line, strlen(line));
close(fd);
#ifdef HAVE_SYSLOG_H
} else {
syslog(inst->facility, "%s", line);
#endif
}
return RLM_MODULE_OK;
}
/** Execute a trigger - call an executable to process an event
*
* @param request The current request.
* @param cs to search for triggers in. If not NULL, only the portion after the last '.'
* in name is used for the trigger. If cs is NULL, the entire name is used to find
* the trigger in the global trigger section.
* @param name the path relative to the global trigger section ending in the trigger name
* e.g. module.ldap.pool.start.
* @param quench whether to rate limit triggers.
*/
void exec_trigger(REQUEST *request, CONF_SECTION *cs, char const *name, bool quench)
{
CONF_SECTION *subcs;
CONF_ITEM *ci;
CONF_PAIR *cp;
char const *attr;
char const *value;
VALUE_PAIR *vp;
bool alloc = false;
/*
* Use global "trigger" section if no local config is given.
*/
if (!cs) {
cs = exec_trigger_main;
attr = name;
} else {
/*
* Try to use pair name, rather than reference.
*/
attr = strrchr(name, '.');
if (attr) {
attr++;
} else {
attr = name;
}
}
/*
* Find local "trigger" subsection. If it isn't found,
* try using the global "trigger" section, and reset the
* reference to the full path, rather than the sub-path.
*/
subcs = cf_section_sub_find(cs, "trigger");
if (!subcs && exec_trigger_main && (cs != exec_trigger_main)) {
subcs = exec_trigger_subcs;
attr = name;
}
if (!subcs) return;
ci = cf_reference_item(subcs, exec_trigger_main, attr);
if (!ci) {
ERROR("No such item in trigger section: %s", attr);
return;
}
if (!cf_item_is_pair(ci)) {
ERROR("Trigger is not a configuration variable: %s", attr);
return;
}
cp = cf_item_to_pair(ci);
if (!cp) return;
value = cf_pair_value(cp);
if (!value) {
ERROR("Trigger has no value: %s", name);
return;
}
/*
* May be called for Status-Server packets.
*/
vp = NULL;
if (request && request->packet) vp = request->packet->vps;
/*
* Perform periodic quenching.
*/
if (quench) {
time_t *last_time;
last_time = cf_data_find(cs, value);
if (!last_time) {
last_time = rad_malloc(sizeof(*last_time));
*last_time = 0;
if (cf_data_add(cs, value, last_time, time_free) < 0) {
free(last_time);
last_time = NULL;
}
}
/*
* Send the quenched traps at most once per second.
*/
if (last_time) {
time_t now = time(NULL);
if (*last_time == now) return;
*last_time = now;
}
}
/*
* radius_exec_program always needs a request.
*/
if (!request) {
request = request_alloc(NULL);
alloc = true;
}
DEBUG("Trigger %s -> %s", name, value);
radius_exec_program(request, NULL, 0, NULL, request, value, vp, false, true, EXEC_TIMEOUT);
if (alloc) talloc_free(request);
}
/*
* Generic function for failing between a bunch of queries.
*
* Uses the same principle as rlm_linelog, expanding the 'reference' config
* item using xlat to figure out what query it should execute.
*
* If the reference matches multiple config items, and a query fails or
* doesn't update any rows, the next matching config item is used.
*
*/
static int acct_redundant(rlm_sql_t *inst, REQUEST *request,
sql_acct_section_t *section)
{
int ret = RLM_MODULE_OK;
rlm_sql_handle_t *handle = NULL;
int sql_ret;
int numaffected = 0;
CONF_ITEM *item;
CONF_PAIR *pair;
const char *attr = NULL;
const char *value;
char path[MAX_STRING_LEN];
char querystr[MAX_QUERY_LEN];
char *p = path;
rad_assert(section);
if (section->reference[0] != '.')
*p++ = '.';
if (!radius_xlat(p, (sizeof(path) - (p - path)) - 1,
section->reference, request, NULL, NULL))
return RLM_MODULE_FAIL;
item = cf_reference_item(NULL, section->cs, path);
if (!item)
return RLM_MODULE_FAIL;
if (cf_item_is_section(item)){
radlog(L_ERR, "Sections are not supported as references");
return RLM_MODULE_FAIL;
}
pair = cf_itemtopair(item);
attr = cf_pair_attr(pair);
RDEBUG2("Using query template '%s'", attr);
handle = sql_get_socket(inst);
if (handle == NULL)
return RLM_MODULE_FAIL;
sql_set_user(inst, request, NULL);
while (TRUE) {
value = cf_pair_value(pair);
if (!value) {
RDEBUG("Ignoring null query");
ret = RLM_MODULE_NOOP;
goto release;
}
radius_xlat(querystr, sizeof(querystr), value, request,
sql_escape_func, inst);
if (!*querystr) {
RDEBUG("Ignoring null query");
ret = RLM_MODULE_NOOP;
goto release;
}
rlm_sql_query_log(inst, request, section, querystr);
/*
* If rlm_sql_query cannot use the socket it'll try and
* reconnect. Reconnecting will automatically release
* the current socket, and try to select a new one.
*
* If we get SQL_DOWN it means all connections in the pool
* were exhausted, and we couldn't create a new connection,
* so we do not need to call sql_release_socket.
*/
sql_ret = rlm_sql_query(&handle, inst, querystr);
if (sql_ret == SQL_DOWN)
return RLM_MODULE_FAIL;
rad_assert(handle);
/*
* Assume all other errors are incidental, and just meant our
* operation failed and its not a client or SQL syntax error.
*/
if (sql_ret == 0) {
numaffected = (inst->module->sql_affected_rows)
(handle, inst->config);
if (numaffected > 0)
break;
RDEBUG("No records updated");
}
(inst->module->sql_finish_query)(handle, inst->config);
/*
* We assume all entries with the same name form a redundant
* set of queries.
*/
pair = cf_pair_find_next(section->cs, pair, attr);
if (!pair) {
RDEBUG("No additional queries configured");
ret = RLM_MODULE_NOOP;
goto release;
}
RDEBUG("Trying next query...");
}
(inst->module->sql_finish_query)(handle, inst->config);
release:
sql_release_socket(inst, handle);
return ret;
}
void exec_trigger(REQUEST *request, CONF_SECTION *cs, const char *name)
{
CONF_SECTION *subcs;
CONF_ITEM *ci;
CONF_PAIR *cp;
const char *attr;
const char *value;
VALUE_PAIR *vp;
/*
* Use global "trigger" section if no local config is given.
*/
if (!cs) {
cs = mainconfig.config;
attr = name;
} else {
/*
* Try to use pair name, rather than reference.
*/
attr = strrchr(name, '.');
if (attr) {
attr++;
} else {
attr = name;
}
}
/*
* Find local "trigger" subsection. If it isn't found,
* try using the global "trigger" section, and reset the
* reference to the full path, rather than the sub-path.
*/
subcs = cf_section_sub_find(cs, "trigger");
if (!subcs && (cs != mainconfig.config)) {
subcs = cf_section_sub_find(mainconfig.config, "trigger");
attr = name;
}
if (!subcs) {
DEBUG3("No trigger subsection: ignoring trigger %s", name);
return;
}
ci = cf_reference_item(subcs, mainconfig.config, attr);
if (!ci) {
DEBUG3("No such item in trigger section: %s", attr);
return;
}
if (!cf_item_is_pair(ci)) {
DEBUG2("Trigger is not a configuration variable: %s", attr);
return;
}
cp = cf_itemtopair(ci);
if (!cp) return;
value = cf_pair_value(cp);
if (!value) {
DEBUG2("Trigger has no value: %s", name);
return;
}
/*
* May be called for Status-Server packets.
*/
vp = NULL;
if (request && request->packet) vp = request->packet->vps;
DEBUG("Trigger %s -> %s", name, value);
radius_exec_program(value, request, 0, NULL, 0, vp, NULL, 1);
}
static rlm_rcode_t mod_do_linelog(void *instance, REQUEST *request)
{
int fd = -1;
linelog_conn_t *conn;
struct timeval *timeout = NULL;
char buff[4096];
char *p = buff;
linelog_instance_t *inst = instance;
char const *value;
vp_tmpl_t empty, *vpt = NULL, *vpt_p = NULL;
rlm_rcode_t rcode = RLM_MODULE_OK;
ssize_t slen;
struct iovec vector_s[2];
struct iovec *vector = NULL, *vector_p;
size_t vector_len;
bool with_delim;
buff[0] = '.'; /* force to be in current section */
buff[1] = '\0';
buff[2] = '\0';
/*
* Expand log_ref to a config path, using the module
* configuration section as the root.
*/
if (inst->log_ref) {
CONF_ITEM *ci;
CONF_PAIR *cp;
char const *tmpl_str;
if (tmpl_expand(NULL, buff + 1, sizeof(buff) - 1,
request, inst->log_ref, linelog_escape_func, NULL) < 0) {
return RLM_MODULE_FAIL;
}
if (buff[1] == '.') p++;
/*
* Don't go back up.
*/
if (buff[2] == '.') {
REDEBUG("Invalid path \"%s\"", p);
return RLM_MODULE_FAIL;
}
ci = cf_reference_item(NULL, inst->cs, p);
if (!ci) {
RDEBUG2("Path \"%s\" doesn't exist", p);
goto default_msg;
}
if (!cf_item_is_pair(ci)) {
REDEBUG("Path \"%s\" resolves to a section (should be a pair)", p);
return RLM_MODULE_FAIL;
}
cp = cf_item_to_pair(ci);
tmpl_str = cf_pair_value(cp);
if (!tmpl_str || (tmpl_str[0] == '\0')) {
RDEBUG2("Path \"%s\" resolves to an empty config pair", p);
vpt_p = tmpl_init(&empty, TMPL_TYPE_LITERAL, "", 0);
goto build_vector;
}
/*
* Alloc a template from the value of the CONF_PAIR
* using request as the context (which will hopefully avoid a malloc).
*/
slen = tmpl_afrom_str(request, &vpt, tmpl_str, talloc_array_length(tmpl_str) - 1,
cf_pair_value_type(cp), REQUEST_CURRENT, PAIR_LIST_REQUEST, true);
if (slen <= 0) {
REMARKER(tmpl_str, -slen, fr_strerror());
return RLM_MODULE_FAIL;
}
vpt_p = vpt;
} else {
default_msg:
/*
* Use the default format string
*/
if (!inst->log_src) {
RDEBUG2("No default message configured");
return RLM_MODULE_NOOP;
}
/*
* Use the pre-parsed format template
*/
RDEBUG2("Using default message");
vpt_p = inst->log_src;
}
build_vector:
with_delim = (inst->log_dst != LINELOG_DST_SYSLOG) && (inst->delimiter_len > 0);
/*
* Log all the things!
*/
switch (vpt_p->type) {
case TMPL_TYPE_ATTR:
case TMPL_TYPE_LIST:
{
#define VECTOR_INCREMENT 20
vp_cursor_t cursor;
VALUE_PAIR *vp;
int alloced = VECTOR_INCREMENT, i;
MEM(vector = talloc_array(request, struct iovec, alloced));
for (vp = tmpl_cursor_init(NULL, &cursor, request, vpt_p), i = 0;
vp;
vp = tmpl_cursor_next(&cursor, vpt_p), i++) {
/* need extra for line terminator */
if ((with_delim && ((i + 1) >= alloced)) ||
(i >= alloced)) {
alloced += VECTOR_INCREMENT;
MEM(vector = talloc_realloc(request, vector, struct iovec, alloced));
}
switch (vp->da->type) {
case PW_TYPE_OCTETS:
case PW_TYPE_STRING:
vector[i].iov_base = vp->data.ptr;
vector[i].iov_len = vp->vp_length;
break;
default:
p = vp_aprints_value(vector, vp, '\0');
vector[i].iov_base = p;
vector[i].iov_len = talloc_array_length(p) - 1;
break;
}
/*
* Add the line delimiter string
*/
if (with_delim) {
i++;
memcpy(&vector[i].iov_base, &(inst->delimiter), sizeof(vector[i].iov_base));
vector[i].iov_len = inst->delimiter_len;
}
}
vector_p = vector;
vector_len = i;
}
break;
/*
* Log a single thing.
*/
default:
slen = tmpl_expand(&value, buff, sizeof(buff), request, vpt_p, linelog_escape_func, NULL);
if (slen < 0) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
/* iov_base is not declared as const *sigh* */
memcpy(&vector_s[0].iov_base, &value, sizeof(vector_s[0].iov_base));
vector_s[0].iov_len = slen;
if (!with_delim) {
vector_len = 1;
} else {
memcpy(&vector_s[1].iov_base, &(inst->delimiter), sizeof(vector_s[1].iov_base));
vector_s[1].iov_len = inst->delimiter_len;
vector_len = 2;
}
vector_p = &vector_s[0];
}
static rlm_rcode_t CC_HINT(nonnull) mod_do_linelog(void *instance, REQUEST *request)
{
int fd = -1;
rlm_linelog_t *inst = (rlm_linelog_t*) instance;
char const *value = inst->line;
#ifdef HAVE_GRP_H
gid_t gid;
char *endptr;
#endif
char path[2048];
char line[4096];
line[0] = '\0';
if (inst->reference) {
CONF_ITEM *ci;
CONF_PAIR *cp;
if (radius_xlat(line + 1, sizeof(line) - 1, request, inst->reference, linelog_escape_func, NULL) < 0) {
return RLM_MODULE_FAIL;
}
line[0] = '.'; /* force to be in current section */
/*
* Don't allow it to go back up
*/
if (line[1] == '.') goto do_log;
ci = cf_reference_item(NULL, inst->cs, line);
if (!ci) {
RDEBUG2("No such entry \"%s\"", line);
return RLM_MODULE_NOOP;
}
if (!cf_item_is_pair(ci)) {
RDEBUG2("Entry \"%s\" is not a variable assignment ", line);
goto do_log;
}
cp = cf_item_to_pair(ci);
value = cf_pair_value(cp);
if (!value) {
RWDEBUG2("Entry \"%s\" has no value", line);
return RLM_MODULE_OK;
}
/*
* Value exists, but is empty. Don't log anything.
*/
if (!*value) return RLM_MODULE_OK;
}
do_log:
/*
* FIXME: Check length.
*/
if (radius_xlat(line, sizeof(line) - 1, request, value, linelog_escape_func, NULL) < 0) {
return RLM_MODULE_FAIL;
}
#ifdef HAVE_SYSLOG_H
if (strcmp(inst->filename, "syslog") == 0) {
syslog(inst->syslog_priority, "%s", line);
return RLM_MODULE_OK;
}
#endif
/*
* We're using a real filename now.
*/
if (radius_xlat(path, sizeof(path), request, inst->filename, inst->escape_func, NULL) < 0) {
return RLM_MODULE_FAIL;
}
fd = exfile_open(inst->ef, path, inst->permissions, true);
if (fd < 0) {
ERROR("rlm_linelog: Failed to open %s: %s", path, fr_syserror(errno));
return RLM_MODULE_FAIL;
}
if (inst->group != NULL) {
gid = strtol(inst->group, &endptr, 10);
if (*endptr != '\0') {
if (rad_getgid(request, &gid, inst->group) < 0) {
RDEBUG2("Unable to find system group \"%s\"", inst->group);
goto skip_group;
}
}
if (chown(path, -1, gid) == -1) {
RDEBUG2("Unable to change system group of \"%s\"", path);
}
}
skip_group:
strcat(line, "\n");
if (write(fd, line, strlen(line)) < 0) {
exfile_close(inst->ef, fd);
ERROR("rlm_linelog: Failed writing: %s", fr_syserror(errno));
return RLM_MODULE_FAIL;
}
exfile_close(inst->ef, fd);
return RLM_MODULE_OK;
}
/*
* Generic function for failing between a bunch of queries.
*
* Uses the same principle as rlm_linelog, expanding the 'reference' config
* item using xlat to figure out what query it should execute.
*
* If the reference matches multiple config items, and a query fails or
* doesn't update any rows, the next matching config item is used.
*
*/
static int acct_redundant(rlm_sql_t *inst, REQUEST *request, sql_acct_section_t *section)
{
rlm_rcode_t rcode = RLM_MODULE_OK;
rlm_sql_handle_t *handle = NULL;
int sql_ret;
int numaffected = 0;
CONF_ITEM *item;
CONF_PAIR *pair;
char const *attr = NULL;
char const *value;
char path[MAX_STRING_LEN];
char *p = path;
char *expanded = NULL;
rad_assert(section);
if (section->reference[0] != '.') {
*p++ = '.';
}
if (radius_xlat(p, sizeof(path) - (p - path), request, section->reference, NULL, NULL) < 0) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
/*
* If we can't find a matching config item we do
* nothing so return RLM_MODULE_NOOP.
*/
item = cf_reference_item(NULL, section->cs, path);
if (!item) {
RWDEBUG("No such configuration item %s", path);
rcode = RLM_MODULE_NOOP;
goto finish;
}
if (cf_item_is_section(item)){
RWDEBUG("Sections are not supported as references");
rcode = RLM_MODULE_NOOP;
goto finish;
}
pair = cf_item_to_pair(item);
attr = cf_pair_attr(pair);
RDEBUG2("Using query template '%s'", attr);
handle = fr_connection_get(inst->pool);
if (!handle) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
sql_set_user(inst, request, NULL);
while (true) {
value = cf_pair_value(pair);
if (!value) {
RDEBUG("Ignoring null query");
rcode = RLM_MODULE_NOOP;
goto finish;
}
if (radius_axlat(&expanded, request, value, inst->sql_escape_func, handle) < 0) {
rcode = RLM_MODULE_FAIL;
goto finish;
}
if (!*expanded) {
RDEBUG("Ignoring null query");
rcode = RLM_MODULE_NOOP;
talloc_free(expanded);
goto finish;
}
rlm_sql_query_log(inst, request, section, expanded);
sql_ret = rlm_sql_query(inst, request, &handle, expanded);
TALLOC_FREE(expanded);
RDEBUG("SQL query returned: %s", fr_int2str(sql_rcode_table, sql_ret, "<INVALID>"));
switch (sql_ret) {
/*
* Query was a success! Now we just need to check if it did anything.
*/
case RLM_SQL_OK:
break;
/*
* A general, unrecoverable server fault.
*/
case RLM_SQL_ERROR:
/*
* If we get RLM_SQL_RECONNECT it means all connections in the pool
* were exhausted, and we couldn't create a new connection,
* so we do not need to call fr_connection_release.
*/
case RLM_SQL_RECONNECT:
rcode = RLM_MODULE_FAIL;
goto finish;
/*
* Query was invalid, this is a terminal error, but we still need
* to do cleanup, as the connection handle is still valid.
*/
case RLM_SQL_QUERY_INVALID:
rcode = RLM_MODULE_INVALID;
goto finish;
/*
* Driver found an error (like a unique key constraint violation)
* that hinted it might be a good idea to try an alternative query.
*/
case RLM_SQL_ALT_QUERY:
goto next;
}
rad_assert(handle);
/*
* We need to have updated something for the query to have been
* counted as successful.
*/
numaffected = (inst->module->sql_affected_rows)(handle, inst->config);
(inst->module->sql_finish_query)(handle, inst->config);
RDEBUG("%i record(s) updated", numaffected);
if (numaffected > 0) break; /* A query succeeded, were done! */
next:
/*
* We assume all entries with the same name form a redundant
* set of queries.
*/
pair = cf_pair_find_next(section->cs, pair, attr);
if (!pair) {
RDEBUG("No additional queries configured");
rcode = RLM_MODULE_NOOP;
goto finish;
}
RDEBUG("Trying next query...");
}
finish:
talloc_free(expanded);
fr_connection_release(inst->pool, handle);
sql_unset_user(inst, request);
return rcode;
}
/*
* Expand the variables in an input string.
*/
char const *cf_expand_variables(char const *cf, int *lineno,
CONF_SECTION *outer_cs,
char *output, size_t outsize,
char const *input, bool *soft_fail)
{
char *p;
char const *end, *ptr;
CONF_SECTION const *parent_cs;
char name[8192];
if (soft_fail) *soft_fail = false;
/*
* Find the master parent conf section.
* We can't use main_config->root_cs, because we're in the
* process of re-building it, and it isn't set up yet...
*/
parent_cs = cf_root(outer_cs);
p = output;
ptr = input;
while (*ptr) {
/*
* Ignore anything other than "${"
*/
if ((*ptr == '$') && (ptr[1] == '{')) {
CONF_ITEM *ci;
CONF_PAIR *cp;
char *q;
/*
* FIXME: Add support for ${foo:-bar},
* like in xlat.c
*/
/*
* Look for trailing '}', and log a
* warning for anything that doesn't match,
* and exit with a fatal error.
*/
end = strchr(ptr, '}');
if (end == NULL) {
*p = '\0';
INFO("%s[%d]: Variable expansion missing }",
cf, *lineno);
return NULL;
}
ptr += 2;
/*
* Can't really happen because input lines are
* capped at 8k, which is sizeof(name)
*/
if ((size_t) (end - ptr) >= sizeof(name)) {
ERROR("%s[%d]: Reference string is too large",
cf, *lineno);
return NULL;
}
memcpy(name, ptr, end - ptr);
name[end - ptr] = '\0';
q = strchr(name, ':');
if (q) {
*(q++) = '\0';
}
ci = cf_reference_item(parent_cs, outer_cs, name);
if (!ci) {
if (soft_fail) *soft_fail = true;
ERROR("%s[%d]: Reference \"${%s}\" not found", cf, *lineno, name);
return NULL;
}
/*
* The expansion doesn't refer to another item or section
* it's the property of a section.
*/
if (q) {
CONF_SECTION *find = cf_item_to_section(ci);
if (ci->type != CONF_ITEM_SECTION) {
ERROR("%s[%d]: Can only reference properties of sections", cf, *lineno);
return NULL;
}
switch (fr_str2int(conf_property_name, q, CONF_PROPERTY_INVALID)) {
case CONF_PROPERTY_NAME:
strcpy(p, find->name1);
break;
case CONF_PROPERTY_INSTANCE:
strcpy(p, find->name2 ? find->name2 : find->name1);
break;
default:
ERROR("%s[%d]: Invalid property '%s'", cf, *lineno, q);
return NULL;
}
p += strlen(p);
ptr = end + 1;
} else if (ci->type == CONF_ITEM_PAIR) {
/*
* Substitute the value of the variable.
*/
cp = cf_item_to_pair(ci);
/*
* If the thing we reference is
* marked up as being expanded in
* pass2, don't expand it now.
* Let it be expanded in pass2.
*/
if (cp->pass2) {
if (soft_fail) *soft_fail = true;
ERROR("%s[%d]: Reference \"%s\" points to a variable which has not been expanded.",
cf, *lineno, input);
return NULL;
}
if (!cp->value) {
ERROR("%s[%d]: Reference \"%s\" has no value",
cf, *lineno, input);
return NULL;
}
if (p + strlen(cp->value) >= output + outsize) {
ERROR("%s[%d]: Reference \"%s\" is too long",
cf, *lineno, input);
return NULL;
}
strcpy(p, cp->value);
p += strlen(p);
ptr = end + 1;
} else if (ci->type == CONF_ITEM_SECTION) {
CONF_SECTION *subcs;
/*
* Adding an entry again to a
* section is wrong. We don't
* want an infinite loop.
*/
if (cf_item_to_section(ci->parent) == outer_cs) {
ERROR("%s[%d]: Cannot reference different item in same section", cf, *lineno);
return NULL;
}
/*
* Copy the section instead of
* referencing it.
*/
subcs = cf_item_to_section(ci);
subcs = cf_section_dup(outer_cs, outer_cs, subcs,
cf_section_name1(subcs), cf_section_name2(subcs),
false);
if (!subcs) {
ERROR("%s[%d]: Failed copying reference %s", cf, *lineno, name);
return NULL;
}
subcs->item.filename = ci->filename;
subcs->item.lineno = ci->lineno;
cf_item_add(outer_cs, &(subcs->item));
ptr = end + 1;
} else {
ERROR("%s[%d]: Reference \"%s\" type is invalid", cf, *lineno, input);
return NULL;
}
} else if (strncmp(ptr, "$ENV{", 5) == 0) {
char *env;
ptr += 5;
/*
* Look for trailing '}', and log a
* warning for anything that doesn't match,
* and exit with a fatal error.
*/
end = strchr(ptr, '}');
if (end == NULL) {
*p = '\0';
INFO("%s[%d]: Environment variable expansion missing }",
cf, *lineno);
return NULL;
}
/*
* Can't really happen because input lines are
* capped at 8k, which is sizeof(name)
*/
if ((size_t) (end - ptr) >= sizeof(name)) {
ERROR("%s[%d]: Environment variable name is too large",
cf, *lineno);
return NULL;
}
memcpy(name, ptr, end - ptr);
name[end - ptr] = '\0';
/*
* Get the environment variable.
* If none exists, then make it an empty string.
*/
env = getenv(name);
if (env == NULL) {
*name = '\0';
env = name;
}
if (p + strlen(env) >= output + outsize) {
ERROR("%s[%d]: Reference \"%s\" is too long",
cf, *lineno, input);
return NULL;
}
strcpy(p, env);
p += strlen(p);
ptr = end + 1;
} else {
/*
* Copy it over verbatim.
*/
*(p++) = *(ptr++);
}
if (p >= (output + outsize)) {
ERROR("%s[%d]: Reference \"%s\" is too long",
cf, *lineno, input);
return NULL;
}
} /* loop over all of the input string. */
*p = '\0';
return output;
}
