solanum-vs-hackint-and-char.../authd/providers/opm.c

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/* authd/providers/opm.c - small open proxy monitor
* Copyright (c) 2016 Elizabeth Myers <elizabeth@interlinked.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "stdinc.h"
#include "rb_lib.h"
#include "defaults.h"
#include "setup.h"
#include "authd.h"
#include "notice.h"
#include "provider.h"
#include <netinet/tcp.h> // TCP_NODELAY
#define SELF_PID (opm_provider.id)
#define OPM_READSIZE 128
typedef enum protocol_t
{
PROTO_NONE,
PROTO_SOCKS4,
PROTO_SOCKS5,
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PROTO_HTTP_CONNECT,
PROTO_HTTPS_CONNECT,
} protocol_t;
/* Lookup data associated with auth client */
struct opm_lookup
{
rb_dlink_list scans; /* List of scans */
bool in_progress;
};
struct opm_scan;
typedef void (*opm_callback_t)(struct opm_scan *);
/* A proxy scanner */
struct opm_proxy
{
char note[16];
protocol_t proto;
uint16_t port;
bool ssl; /* Connect to proxy with SSL */
bool ipv6; /* Proxy supports IPv6 */
opm_callback_t callback;
rb_dlink_node node;
};
/* A listener for proxy replies */
struct opm_listener
{
char ip[HOSTIPLEN];
uint16_t port;
struct rb_sockaddr_storage addr;
rb_fde_t *F;
};
/* An individual proxy scan */
struct opm_scan
{
struct auth_client *auth;
rb_fde_t *F; /* fd for scan */
struct opm_proxy *proxy; /* Associated proxy */
struct opm_listener *listener; /* Associated listener */
rb_dlink_node node;
};
/* Proxies that we scan for */
static rb_dlink_list proxy_scanners;
static ACCB accept_opm;
static PF read_opm_reply;
static CNCB opm_connected;
static void opm_cancel(struct auth_client *auth);
static bool create_listener(const char *ip, uint16_t port);
static int opm_timeout = OPM_TIMEOUT_DEFAULT;
static bool opm_enable = false;
enum
{
LISTEN_IPV4,
LISTEN_IPV6,
LISTEN_LAST,
};
/* IPv4 and IPv6 */
static struct opm_listener listeners[LISTEN_LAST];
static inline protocol_t
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get_protocol_from_string(const char *str)
{
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if(strcasecmp(str, "socks4") == 0)
return PROTO_SOCKS4;
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else if(strcasecmp(str, "socks5") == 0)
return PROTO_SOCKS5;
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else if(strcasecmp(str, "httpconnect") == 0)
return PROTO_HTTP_CONNECT;
else if(strcasecmp(str, "httpsconnect") == 0)
return PROTO_HTTPS_CONNECT;
else
return PROTO_NONE;
}
static inline struct opm_proxy *
find_proxy_scanner(protocol_t proto, uint16_t port)
{
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, proxy_scanners.head)
{
struct opm_proxy *proxy = ptr->data;
if(proxy->proto == proto && proxy->port == port)
return proxy;
}
return NULL;
}
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/* This is called when an open proxy connects to us */
static void
read_opm_reply(rb_fde_t *F, void *data)
{
rb_dlink_node *ptr;
struct auth_client *auth = data;
struct opm_lookup *lookup;
char readbuf[OPM_READSIZE];
ssize_t len;
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lrb_assert(auth != NULL);
lookup = get_provider_data(auth, SELF_PID);
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lrb_assert(lookup != NULL);
if((len = rb_read(F, readbuf, sizeof(readbuf))) < 0 && rb_ignore_errno(errno))
{
rb_setselect(F, RB_SELECT_READ, read_opm_reply, auth);
return;
}
else if(len <= 0)
{
/* Dead */
rb_close(F);
return;
}
RB_DLINK_FOREACH(ptr, proxy_scanners.head)
{
struct opm_proxy *proxy = ptr->data;
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if(strncmp(proxy->note, readbuf, strlen(proxy->note)) == 0)
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{
rb_dlink_node *ptr, *nptr;
/* Cancel outstanding lookups */
RB_DLINK_FOREACH_SAFE(ptr, nptr, lookup->scans.head)
{
struct opm_scan *scan = ptr->data;
rb_close(scan->F);
rb_free(scan);
}
/* No longer needed, client is going away */
rb_free(lookup);
reject_client(auth, SELF_PID, readbuf, "Open proxy detected");
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break;
}
}
rb_close(F);
}
static void
accept_opm(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t len, void *data)
{
struct auth_client *auth = NULL;
struct opm_listener *listener = data;
struct rb_sockaddr_storage localaddr;
unsigned int llen = sizeof(struct rb_sockaddr_storage);
rb_dictionary_iter iter;
if(status != 0 || listener == NULL)
{
rb_close(F);
return;
}
if(getsockname(rb_get_fd(F), (struct sockaddr *)&localaddr, &llen))
{
/* This can happen if the client goes away after accept */
rb_close(F);
return;
}
/* Correlate connection with client(s) */
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
if(GET_SS_FAMILY(&auth->c_addr) != GET_SS_FAMILY(&localaddr))
continue;
/* Compare the addresses */
switch(GET_SS_FAMILY(&localaddr))
{
case AF_INET:
{
struct sockaddr_in *s = (struct sockaddr_in *)&localaddr, *c = (struct sockaddr_in *)&auth->c_addr;
if(s->sin_addr.s_addr == c->sin_addr.s_addr)
{
/* Match... check if it's real */
rb_setselect(F, RB_SELECT_READ, read_opm_reply, auth);
return;
}
break;
}
case AF_INET6:
{
struct sockaddr_in6 *s = (struct sockaddr_in6 *)&localaddr, *c = (struct sockaddr_in6 *)&auth->c_addr;
if(IN6_ARE_ADDR_EQUAL(&s->sin6_addr, &c->sin6_addr))
{
rb_setselect(F, RB_SELECT_READ, read_opm_reply, auth);
return;
}
break;
}
default:
warn_opers(L_CRIT, "OPM: unknown address type in listen function");
exit(EX_PROVIDER_ERROR);
}
}
/* We don't care about the socket if we get here */
rb_close(F);
}
/* Scanners */
static void
opm_connected(rb_fde_t *F, int error, void *data)
{
struct opm_scan *scan = data;
struct opm_proxy *proxy = scan->proxy;
struct auth_client *auth = scan->auth;
struct opm_lookup *lookup = get_provider_data(auth, SELF_PID);
if(error || !opm_enable)
{
//notice_client(scan->auth->cid, "*** Scan not connected: %s", proxy->note);
goto end;
}
switch(GET_SS_FAMILY(&auth->c_addr))
{
case AF_INET:
if(listeners[LISTEN_IPV4].F == NULL)
/* They cannot respond to us */
goto end;
break;
case AF_INET6:
if(!proxy->ipv6)
/* Welp, too bad */
goto end;
if(listeners[LISTEN_IPV6].F == NULL)
/* They cannot respond to us */
goto end;
break;
default:
goto end;
}
proxy->callback(scan);
end:
rb_close(scan->F);
rb_dlinkDelete(&scan->node, &lookup->scans);
rb_free(scan);
}
static void
socks4_connected(struct opm_scan *scan)
{
uint8_t sendbuf[9]; /* Size we're building */
uint8_t *c = sendbuf;
memcpy(c, "\x04\x01", 2); c += 2; /* Socks version 4, connect command */
memcpy(c, &(((struct sockaddr_in *)&scan->listener->addr)->sin_port), 2); c += 2; /* Port */
memcpy(c, &(((struct sockaddr_in *)&scan->listener->addr)->sin_addr.s_addr), 4); c += 4; /* Address */
*c = '\x00'; /* No userid */
/* Send header */
if(rb_write(scan->F, sendbuf, sizeof(sendbuf)) < 0)
return;
/* Send note */
if(rb_write(scan->F, scan->proxy->note, strlen(scan->proxy->note) + 1) < 0)
return;
}
static void
socks5_connected(struct opm_scan *scan)
{
struct auth_client *auth = scan->auth;
uint8_t sendbuf[25]; /* Size we're building */
uint8_t *c = sendbuf;
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/* Build the version header and socks request
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* version header (3 bytes): version, number of auth methods, auth type (0 for none)
* connect req (3 bytes): version, command (1 = connect), reserved (0)
*/
memcpy(c, "\x05\x01\x00\x05\x01\x00", 6); c += 6;
switch(GET_SS_FAMILY(&auth->c_addr))
{
case AF_INET:
*(c++) = '\x01'; /* Address type (1 = IPv4) */
memcpy(c, &(((struct sockaddr_in *)&scan->listener->addr)->sin_addr.s_addr), 4); c += 4; /* Address */
memcpy(c, &(((struct sockaddr_in *)&scan->listener->addr)->sin_port), 2); c += 2; /* Port */
break;
case AF_INET6:
*(c++) = '\x04'; /* Address type (4 = IPv6) */
memcpy(c, ((struct sockaddr_in6 *)&scan->listener->addr)->sin6_addr.s6_addr, 16); c += 16; /* Address */
memcpy(c, &(((struct sockaddr_in6 *)&scan->listener->addr)->sin6_port), 2); c += 2; /* Port */
break;
default:
return;
}
/* Send header */
if(rb_write(scan->F, sendbuf, (size_t)(sendbuf - c)) <= 0)
return;
/* Now the note in a separate write */
if(rb_write(scan->F, scan->proxy->note, strlen(scan->proxy->note) + 1) <= 0)
return;
}
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static void
http_connect_connected(struct opm_scan *scan)
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{
char sendbuf[128]; /* A bit bigger than we need but better safe than sorry */
/* Simple enough to build */
snprintf(sendbuf, sizeof(sendbuf), "CONNECT %s:%hu HTTP/1.0\r\n\r\n", scan->listener->ip, scan->listener->port);
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/* Send request */
if(rb_write(scan->F, sendbuf, strlen(sendbuf)) <= 0)
return;
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/* Now the note in a separate write */
if(rb_write(scan->F, scan->proxy->note, strlen(scan->proxy->note) + 1) <= 0)
return;
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/* MiroTik needs this, and as a separate write */
if(rb_write(scan->F, "\r\n", 2) <= 0)
return;
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}
/* Establish connections */
static inline void
establish_connection(struct auth_client *auth, struct opm_proxy *proxy)
{
struct opm_lookup *lookup = get_provider_data(auth, SELF_PID);
struct opm_scan *scan = rb_malloc(sizeof(struct opm_scan));
struct opm_listener *listener;
struct rb_sockaddr_storage c_a, l_a;
int opt = 1;
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lrb_assert(lookup != NULL);
if(GET_SS_FAMILY(&auth->c_addr) == AF_INET6)
{
if(proxy->proto == PROTO_SOCKS4)
{
/* SOCKS4 doesn't support IPv6 */
rb_free(scan);
return;
}
listener = &listeners[LISTEN_IPV6];
}
else
listener = &listeners[LISTEN_IPV4];
if(listener->F == NULL)
{
/* We can't respond */
rb_free(scan);
return;
}
c_a = auth->c_addr; /* Client */
l_a = listener->addr; /* Listener (connect using its IP) */
scan->auth = auth;
scan->proxy = proxy;
scan->listener = listener;
if((scan->F = rb_socket(GET_SS_FAMILY(&auth->c_addr), SOCK_STREAM, 0, proxy->note)) == NULL)
{
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warn_opers(L_WARN, "OPM: could not create OPM socket (proto %s): %s", proxy->note, strerror(errno));
rb_free(scan);
return;
}
/* Disable Nagle's algorithim - buffering could affect scans */
(void)setsockopt(rb_get_fd(scan->F), IPPROTO_TCP, TCP_NODELAY, (char *)&opt, sizeof(opt));
SET_SS_PORT(&l_a, 0);
SET_SS_PORT(&c_a, htons(proxy->port));
rb_dlinkAdd(scan, &scan->node, &lookup->scans);
if(!proxy->ssl)
rb_connect_tcp(scan->F,
(struct sockaddr *)&c_a,
(struct sockaddr *)&l_a,
opm_connected, scan, opm_timeout);
else
rb_connect_tcp_ssl(scan->F,
(struct sockaddr *)&c_a,
(struct sockaddr *)&l_a,
opm_connected, scan, opm_timeout);
}
static bool
create_listener(const char *ip, uint16_t port)
{
struct auth_client *auth;
struct opm_listener *listener;
struct rb_sockaddr_storage addr;
rb_dictionary_iter iter;
rb_fde_t *F;
int opt = 1;
if(!rb_inet_pton_sock(ip, &addr))
{
warn_opers(L_CRIT, "OPM: got a bad listener: %s:%hu", ip, port);
exit(EX_PROVIDER_ERROR);
}
SET_SS_PORT(&addr, htons(port));
if(GET_SS_FAMILY(&addr) == AF_INET6)
{
struct sockaddr_in6 *a1, *a2;
listener = &listeners[LISTEN_IPV6];
a1 = (struct sockaddr_in6 *)&addr;
a2 = (struct sockaddr_in6 *)&listener->addr;
if(IN6_ARE_ADDR_EQUAL(&a1->sin6_addr, &a2->sin6_addr) &&
GET_SS_PORT(&addr) == GET_SS_PORT(&listener->addr) &&
listener->F != NULL)
{
/* Listener already exists */
return false;
}
}
else
{
struct sockaddr_in *a1, *a2;
listener = &listeners[LISTEN_IPV4];
a1 = (struct sockaddr_in *)&addr;
a2 = (struct sockaddr_in *)&listener->addr;
if(a1->sin_addr.s_addr == a2->sin_addr.s_addr &&
GET_SS_PORT(&addr) == GET_SS_PORT(&listener->addr) &&
listener->F != NULL)
{
/* Listener already exists */
return false;
}
}
if((F = rb_socket(GET_SS_FAMILY(&addr), SOCK_STREAM, 0, "OPM listener socket")) == NULL)
{
/* This shouldn't fail, or we have big problems... */
warn_opers(L_CRIT, "OPM: cannot create socket: %s", strerror(errno));
exit(EX_PROVIDER_ERROR);
}
if(setsockopt(rb_get_fd(F), SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(opt)))
{
/* This shouldn't fail either... */
warn_opers(L_CRIT, "OPM: cannot set options on socket: %s", strerror(errno));
exit(EX_PROVIDER_ERROR);
}
if(bind(rb_get_fd(F), (struct sockaddr *)&addr, GET_SS_LEN(&addr)))
{
/* Shit happens, let's not cripple authd over /this/ since it could be user error */
warn_opers(L_WARN, "OPM: cannot bind on socket: %s", strerror(errno));
rb_close(F);
return false;
}
if(rb_listen(F, SOMAXCONN, false)) /* deferred accept could interfere with detection */
{
/* Again, could be user error */
warn_opers(L_WARN, "OPM: cannot listen on socket: %s", strerror(errno));
rb_close(F);
return false;
}
/* From this point forward we assume we have a listener */
if(listener->F != NULL)
/* Close old listener */
rb_close(listener->F);
listener->F = F;
/* Cancel clients that may be on old listener
* XXX - should rescan clients that need it
*/
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
opm_cancel(auth);
/* auth is now invalid as we have no reference */
}
/* Copy data */
rb_strlcpy(listener->ip, ip, sizeof(listener->ip));
listener->port = port;
listener->addr = addr;
opm_enable = true; /* Implicitly set this to true for now if we have a listener */
rb_accept_tcp(listener->F, NULL, accept_opm, listener);
return true;
}
static void
opm_scan(struct auth_client *auth)
{
rb_dlink_node *ptr;
struct opm_lookup *lookup;
lrb_assert(auth != NULL);
lookup = get_provider_data(auth, SELF_PID);
set_provider_timeout_relative(auth, SELF_PID, opm_timeout);
lookup->in_progress = true;
RB_DLINK_FOREACH(ptr, proxy_scanners.head)
{
struct opm_proxy *proxy = ptr->data;
//notice_client(auth->cid, "*** Scanning for proxy type %s", proxy->note);
establish_connection(auth, proxy);
}
notice_client(auth->cid, "*** Scanning for open proxies...");
}
/* This is called every time a provider is completed as long as we are marked not done */
static void
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opm_initiate(struct auth_client *auth, uint32_t provider)
{
struct opm_lookup *lookup = get_provider_data(auth, SELF_PID);
lrb_assert(provider != SELF_PID);
lrb_assert(!is_provider_done(auth, SELF_PID));
lrb_assert(rb_dlink_list_length(&proxy_scanners) > 0);
if (lookup == NULL || lookup->in_progress) {
/* Nothing to do */
return;
} else if (run_after_provider(auth, "rdns") && run_after_provider(auth,"ident")) {
/* Start scanning if ident and rdns are finished, or not loaded. */
opm_scan(auth);
}
}
static bool
opm_start(struct auth_client *auth)
{
lrb_assert(get_provider_data(auth, SELF_PID) == NULL);
if (!opm_enable || rb_dlink_list_length(&proxy_scanners) == 0) {
/* Nothing to do... */
provider_done(auth, SELF_PID);
return true;
}
auth_client_ref(auth);
set_provider_data(auth, SELF_PID, rb_malloc(sizeof(struct opm_lookup)));
if (run_after_provider(auth, "rdns") && run_after_provider(auth, "ident")) {
/* Start scanning if ident and rdns are finished, or not loaded. */
opm_scan(auth);
}
return true;
}
static void
opm_cancel(struct auth_client *auth)
{
struct opm_lookup *lookup = get_provider_data(auth, SELF_PID);
if(lookup != NULL)
{
rb_dlink_node *ptr, *nptr;
notice_client(auth->cid, "*** Did not detect open proxies");
RB_DLINK_FOREACH_SAFE(ptr, nptr, lookup->scans.head)
{
struct opm_scan *scan = ptr->data;
rb_close(scan->F);
rb_free(scan);
}
rb_free(lookup);
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set_provider_data(auth, SELF_PID, NULL);
set_provider_timeout_absolute(auth, SELF_PID, 0);
provider_done(auth, SELF_PID);
auth_client_unref(auth);
}
}
static void
opm_destroy(void)
{
struct auth_client *auth;
rb_dictionary_iter iter;
/* Nuke all opm lookups */
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
opm_cancel(auth);
/* auth is now invalid as we have no reference */
}
}
static void
add_conf_opm_timeout(const char *key __unused, int parc __unused, const char **parv)
{
int timeout = atoi(parv[0]);
if(timeout < 0)
{
warn_opers(L_CRIT, "opm: opm timeout < 0 (value: %d)", timeout);
return;
}
opm_timeout = timeout;
}
static void
set_opm_enabled(const char *key __unused, int parc __unused, const char **parv)
{
bool enable = (*parv[0] == '1');
if(!enable)
{
if(listeners[LISTEN_IPV4].F != NULL || listeners[LISTEN_IPV6].F != NULL)
{
struct auth_client *auth;
rb_dictionary_iter iter;
/* Close the listening socket */
if(listeners[LISTEN_IPV4].F != NULL)
rb_close(listeners[LISTEN_IPV4].F);
if(listeners[LISTEN_IPV6].F != NULL)
rb_close(listeners[LISTEN_IPV6].F);
listeners[LISTEN_IPV4].F = listeners[LISTEN_IPV6].F = NULL;
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
opm_cancel(auth);
/* auth is now invalid as we have no reference */
}
}
}
else
{
if(listeners[LISTEN_IPV4].ip[0] != '\0' && listeners[LISTEN_IPV4].port != 0)
{
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if(listeners[LISTEN_IPV4].F == NULL)
/* Pre-configured IP/port, just re-establish */
create_listener(listeners[LISTEN_IPV4].ip, listeners[LISTEN_IPV4].port);
}
if(listeners[LISTEN_IPV6].ip[0] != '\0' && listeners[LISTEN_IPV6].port != 0)
{
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if(listeners[LISTEN_IPV6].F == NULL)
/* Pre-configured IP/port, just re-establish */
create_listener(listeners[LISTEN_IPV6].ip, listeners[LISTEN_IPV6].port);
}
}
opm_enable = enable;
}
static void
set_opm_listener(const char *key __unused, int parc __unused, const char **parv)
{
const char *ip = parv[0];
int iport = atoi(parv[1]);
if(iport > 65535 || iport <= 0)
{
warn_opers(L_CRIT, "OPM: got a bad listener: %s:%s", parv[0], parv[1]);
exit(EX_PROVIDER_ERROR);
}
create_listener(ip, (uint16_t)iport);
}
static void
create_opm_scanner(const char *key __unused, int parc __unused, const char **parv)
{
int iport = atoi(parv[1]);
struct opm_proxy *proxy = rb_malloc(sizeof(struct opm_proxy));
if(iport <= 0 || iport > 65535)
{
warn_opers(L_CRIT, "OPM: got a bad scanner: %s (port %s)", parv[0], parv[1]);
exit(EX_PROVIDER_ERROR);
}
proxy->port = (uint16_t)iport;
switch((proxy->proto = get_protocol_from_string(parv[0])))
{
case PROTO_SOCKS4:
snprintf(proxy->note, sizeof(proxy->note), "socks4:%hu", proxy->port);
proxy->ssl = false;
proxy->callback = socks4_connected;
break;
case PROTO_SOCKS5:
snprintf(proxy->note, sizeof(proxy->note), "socks5:%hu", proxy->port);
proxy->ssl = false;
proxy->callback = socks5_connected;
break;
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case PROTO_HTTP_CONNECT:
snprintf(proxy->note, sizeof(proxy->note), "httpconnect:%hu", proxy->port);
proxy->ssl = false;
proxy->callback = http_connect_connected;
break;
case PROTO_HTTPS_CONNECT:
snprintf(proxy->note, sizeof(proxy->note), "httpsconnect:%hu", proxy->port);
proxy->callback = http_connect_connected;
proxy->ssl = true;
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break;
default:
warn_opers(L_CRIT, "OPM: got an unknown proxy type: %s (port %hu)", parv[0], proxy->port);
exit(EX_PROVIDER_ERROR);
}
if(find_proxy_scanner(proxy->proto, proxy->port) != NULL)
{
warn_opers(L_CRIT, "OPM: got a duplicate scanner: %s (port %hu)", parv[0], proxy->port);
rb_free(proxy);
return;
}
rb_dlinkAdd(proxy, &proxy->node, &proxy_scanners);
}
static void
delete_opm_scanner(const char *key __unused, int parc __unused, const char **parv)
{
struct auth_client *auth;
struct opm_proxy *proxy;
protocol_t proto = get_protocol_from_string(parv[0]);
int iport = atoi(parv[1]);
rb_dictionary_iter iter;
if(iport <= 0 || iport > 65535)
{
warn_opers(L_CRIT, "OPM: got a bad scanner to delete: %s (port %s)", parv[0], parv[1]);
exit(EX_PROVIDER_ERROR);
}
if(proto == PROTO_NONE)
{
warn_opers(L_CRIT, "OPM: got an unknown proxy type to delete: %s (port %d)", parv[0], iport);
exit(EX_PROVIDER_ERROR);
}
if((proxy = find_proxy_scanner(proto, (uint16_t)iport)) == NULL)
{
warn_opers(L_CRIT, "OPM: cannot find proxy to delete: %s (port %d)", parv[0], iport);
exit(EX_PROVIDER_ERROR);
}
/* Abort remaining clients on this scanner */
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
rb_dlink_node *ptr;
struct opm_lookup *lookup = get_provider_data(auth, SELF_PID);
if(lookup == NULL)
continue;
auth_client_ref(auth);
RB_DLINK_FOREACH(ptr, lookup->scans.head)
{
struct opm_scan *scan = ptr->data;
if(scan->proxy->port == proxy->port && scan->proxy->proto == proxy->proto)
{
/* Match */
rb_dlinkDelete(&scan->node, &lookup->scans);
rb_free(scan);
if(rb_dlink_list_length(&lookup->scans) == 0)
opm_cancel(auth);
break;
}
}
auth_client_unref(auth);
}
rb_dlinkDelete(&proxy->node, &proxy_scanners);
rb_free(proxy);
if(rb_dlink_list_length(&proxy_scanners) == 0)
opm_enable = false;
}
static void
delete_opm_scanner_all(const char *key __unused, int parc __unused, const char **parv __unused)
{
struct auth_client *auth;
rb_dlink_node *ptr, *nptr;
rb_dictionary_iter iter;
RB_DLINK_FOREACH_SAFE(ptr, nptr, proxy_scanners.head)
{
rb_free(ptr->data);
rb_dlinkDelete(ptr, &proxy_scanners);
}
RB_DICTIONARY_FOREACH(auth, &iter, auth_clients)
{
opm_cancel(auth);
/* auth is now invalid as we have no reference */
}
opm_enable = false;
}
static void
delete_opm_listener_all(const char *key __unused, int parc __unused, const char **parv __unused)
{
if(listeners[LISTEN_IPV4].F != NULL)
rb_close(listeners[LISTEN_IPV4].F);
if(listeners[LISTEN_IPV6].F != NULL)
rb_close(listeners[LISTEN_IPV6].F);
memset(&listeners, 0, sizeof(listeners));
}
struct auth_opts_handler opm_options[] =
{
{ "opm_timeout", 1, add_conf_opm_timeout },
{ "opm_enabled", 1, set_opm_enabled },
{ "opm_listener", 2, set_opm_listener },
{ "opm_listener_del_all", 0, delete_opm_listener_all },
{ "opm_scanner", 2, create_opm_scanner },
{ "opm_scanner_del", 2, delete_opm_scanner },
{ "opm_scanner_del_all", 0, delete_opm_scanner_all },
{ NULL, 0, NULL },
};
struct auth_provider opm_provider =
{
.name = "opm",
.letter = 'O',
.destroy = opm_destroy,
.start = opm_start,
.cancel = opm_cancel,
.timeout = opm_cancel,
2016-04-06 12:43:36 +00:00
.completed = opm_initiate,
.opt_handlers = opm_options,
};