/*
* Copyright (c) 2010 Mark Williams
+ * Copyright (c) 2012 Frank Lahm <franklahm@gmail.com>
*
* File change event API for netatalk
*
#include <stdlib.h>
#include <errno.h>
#include <time.h>
-
-
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
-
-#include <netatalk/at.h>
+#include <stdbool.h>
#include <atalk/adouble.h>
#include <atalk/vfs.h>
// ONLY USED IN THIS FILE
#include "fce_api_internal.h"
-#define FCE_TRUE 1
-#define FCE_FALSE 0
-
/* We store our connection data here */
static struct udp_entry udp_socket_list[FCE_MAX_UDP_SOCKS];
static int udp_sockets = 0;
-static int udp_initialized = FCE_FALSE;
+static bool udp_initialized = false;
static unsigned long fce_ev_enabled =
(1 << FCE_FILE_MODIFY) |
(1 << FCE_FILE_DELETE) |
(1 << FCE_FILE_CREATE) |
(1 << FCE_DIR_CREATE);
-static uint64_t tm_used; /* used for passing to event handler */
#define MAXIOBUF 1024
-static char iobuf[MAXIOBUF];
+static unsigned char iobuf[MAXIOBUF];
static const char *skip_files[] =
{
".DS_Store",
};
static struct fce_close_event last_close_event;
+static char *fce_event_names[] = {
+ "",
+ "FCE_FILE_MODIFY",
+ "FCE_FILE_DELETE",
+ "FCE_DIR_DELETE",
+ "FCE_FILE_CREATE",
+ "FCE_DIR_CREATE"
+};
+
/*
*
* Initialize network structs for any listeners
int rv;
struct addrinfo hints, *servinfo, *p;
- if (udp_initialized == FCE_TRUE)
+ if (udp_initialized == true)
return;
memset(&hints, 0, sizeof hints);
close(udp_entry->sock);
if ((rv = getaddrinfo(udp_entry->addr, udp_entry->port, &hints, &servinfo)) != 0) {
- LOG(log_error, logtype_afpd, "fce_init_udp: getaddrinfo(%s:%s): %s",
+ LOG(log_error, logtype_fce, "fce_init_udp: getaddrinfo(%s:%s): %s",
udp_entry->addr, udp_entry->port, gai_strerror(rv));
continue;
}
/* loop through all the results and make a socket */
for (p = servinfo; p != NULL; p = p->ai_next) {
if ((udp_entry->sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) {
- LOG(log_error, logtype_afpd, "fce_init_udp: socket(%s:%s): %s",
+ LOG(log_error, logtype_fce, "fce_init_udp: socket(%s:%s): %s",
udp_entry->addr, udp_entry->port, strerror(errno));
continue;
}
}
if (p == NULL) {
- LOG(log_error, logtype_afpd, "fce_init_udp: no socket for %s:%s",
+ LOG(log_error, logtype_fce, "fce_init_udp: no socket for %s:%s",
udp_entry->addr, udp_entry->port);
}
udp_entry->addrinfo = *p;
freeaddrinfo(servinfo);
}
- udp_initialized = FCE_TRUE;
+ udp_initialized = true;
}
void fce_cleanup()
{
- if (udp_initialized == FCE_FALSE )
+ if (udp_initialized == false )
return;
for (int i = 0; i < udp_sockets; i++)
udp_entry->sock = -1;
}
}
- udp_initialized = FCE_FALSE;
+ udp_initialized = false;
}
-
/*
* Construct a UDP packet for our listeners and return packet size
* */
-static ssize_t build_fce_packet( struct fce_packet *packet, char *path, int mode, uint32_t event_id )
+static ssize_t build_fce_packet( struct fce_packet *packet, const char *path, int event, uint32_t event_id )
{
- size_t pathlen;
+ size_t pathlen = 0;
ssize_t data_len = 0;
- strncpy(packet->magic, FCE_PACKET_MAGIC, sizeof(packet->magic) );
+ /* Set content of packet */
+ memcpy(packet->magic, FCE_PACKET_MAGIC, sizeof(packet->magic) );
packet->version = FCE_PACKET_VERSION;
- packet->mode = mode;
- packet->event_id = event_id;
-
- pathlen = strlen(path) + 1; /* include string terminator */
+ packet->mode = event;
+
+ packet->event_id = event_id;
+ pathlen = strlen(path); /* exclude string terminator */
+
/* This should never happen, but before we bust this server, we send nonsense, fce listener has to cope */
if (pathlen >= MAXPATHLEN)
pathlen = MAXPATHLEN - 1;
- /* This is the payload len. Means: the stream has len bytes more until packet is finished */
- /* A server should read the first 16 byte, decode them and then fetch the rest */
- data_len = FCE_PACKET_HEADER_SIZE + pathlen;
packet->datalen = pathlen;
- switch (mode) {
- case FCE_TM_SIZE:
- tm_used = hton64(tm_used);
- memcpy(packet->data, &tm_used, sizeof(tm_used));
- strncpy(packet->data + sizeof(tm_used), path, pathlen);
+ /* This is the payload len. Means: the packet has len bytes more until packet is finished */
+ data_len = FCE_PACKET_HEADER_SIZE + pathlen;
- packet->datalen += sizeof(tm_used);
- data_len += sizeof(tm_used);
- break;
- default:
- strncpy(packet->data, path, pathlen);
- break;
- }
+ memcpy(packet->data, path, pathlen);
/* return the packet len */
return data_len;
}
-static int pack_fce_packet(struct fce_packet *packet, unsigned char *buf)
+/*
+ * Handle Endianess and write into buffer w/o padding
+ **/
+static void pack_fce_packet(struct fce_packet *packet, unsigned char *buf, int maxlen)
{
unsigned char *p = buf;
*p = packet->mode;
p++;
- uint32_t id = htonl(packet->event_id);
- memcpy(p, &id, sizeof(id));
+ uint32_t *id = (uint32_t*)p;
+ *id = htonl(packet->event_id);
p += sizeof(packet->event_id);
- uint16_t l = htons(packet->datalen);
- memcpy(p, &l, sizeof(l));
- p += sizeof(l);
-
- memcpy(p, &packet->data[0], packet->datalen);
- p += packet->datalen;
+ uint16_t *l = ( uint16_t *)p;
+ *l = htons(packet->datalen);
+ p += sizeof(packet->datalen);
- return 0;
+ if (((p - buf) + packet->datalen) < maxlen) {
+ memcpy(p, &packet->data[0], packet->datalen);
+ }
}
/*
* Send the fce information to all (connected) listeners
* We dont give return code because all errors are handled internally (I hope..)
* */
-static void send_fce_event( char *path, int mode )
+static void send_fce_event(const char *path, int event)
{
- static int first_event = FCE_TRUE;
+ static bool first_event = true;
struct fce_packet packet;
- void *data = &packet;
static uint32_t event_id = 0; /* the unique packet couter to detect packet/data loss. Going from 0xFFFFFFFF to 0x0 is a valid increment */
time_t now = time(NULL);
- LOG(log_debug, logtype_afpd, "send_fce_event: start");
+ LOG(log_debug, logtype_fce, "send_fce_event: start");
/* initialized ? */
- if (first_event == FCE_TRUE) {
- first_event = FCE_FALSE;
+ if (first_event == true) {
+ first_event = false;
fce_init_udp();
/* Notify listeners the we start from the beginning */
send_fce_event( "", FCE_CONN_START );
}
/* build our data packet */
- ssize_t data_len = build_fce_packet( &packet, path, mode, ++event_id );
- pack_fce_packet(&packet, iobuf);
+ ssize_t data_len = build_fce_packet( &packet, path, event, ++event_id );
+ pack_fce_packet(&packet, iobuf, MAXIOBUF);
for (int i = 0; i < udp_sockets; i++)
{
if (udp_entry->sock == -1) {
/* failed again, so go to rest again */
- LOG(log_error, logtype_afpd, "Cannot recreate socket for fce UDP connection: errno %d", errno );
+ LOG(log_error, logtype_fce, "Cannot recreate socket for fce UDP connection: errno %d", errno );
udp_entry->next_try_on_error = now + FCE_SOCKET_RETRY_DELAY_S;
continue;
/* Okay, we have a running socket again, send server that we had a problem on our side*/
data_len = build_fce_packet( &packet, "", FCE_CONN_BROKEN, 0 );
- pack_fce_packet(&packet, iobuf);
+ pack_fce_packet(&packet, iobuf, MAXIOBUF);
sendto(udp_entry->sock,
iobuf,
udp_entry->addrinfo.ai_addrlen);
/* Rebuild our original data packet */
- data_len = build_fce_packet( &packet, path, mode, event_id );
- pack_fce_packet(&packet, iobuf);
+ data_len = build_fce_packet(&packet, path, event, event_id);
+ pack_fce_packet(&packet, iobuf, MAXIOBUF);
}
sent_data = sendto(udp_entry->sock,
/* Problems ? */
if (sent_data != data_len) {
/* Argh, socket broke, we close and retry later */
- LOG(log_error, logtype_afpd, "send_fce_event: error sending packet to %s:%s, transfered %d of %d: %s",
+ LOG(log_error, logtype_fce, "send_fce_event: error sending packet to %s:%s, transfered %d of %d: %s",
udp_entry->addr, udp_entry->port, sent_data, data_len, strerror(errno));
close( udp_entry->sock );
target_port = FCE_DEFAULT_PORT_STRING;
if (udp_sockets >= FCE_MAX_UDP_SOCKS) {
- LOG(log_error, logtype_afpd, "Too many file change api UDP connections (max %d allowed)", FCE_MAX_UDP_SOCKS );
+ LOG(log_error, logtype_fce, "Too many file change api UDP connections (max %d allowed)", FCE_MAX_UDP_SOCKS );
return AFPERR_PARAM;
}
send_fce_event(last_close_event.path, FCE_FILE_MODIFY);
}
- LOG(log_debug, logtype_afpd, "save_close_event: %s", path);
+ LOG(log_debug, logtype_fce, "save_close_event: %s", path);
last_close_event.time = now;
strncpy(last_close_event.path, path, MAXPATHLEN);
* Dispatcher for all incoming file change events
*
* */
-static int register_fce(const char *u_name, int is_dir, int mode)
+int fce_register(fce_ev_t event, const char *path, const char *oldpath, fce_obj_t type)
{
- static int first_event = FCE_TRUE;
+ static bool first_event = true;
+ const char *bname;
+
+ if (!(fce_ev_enabled & (1 << event)))
+ return AFP_OK;
+
+ AFP_ASSERT(event >= FCE_FIRST_EVENT && event <= FCE_LAST_EVENT);
+ AFP_ASSERT(path);
+
+ LOG(log_debug, logtype_fce, "register_fce(path: %s, type: %s, event: %s",
+ path, type == fce_dir ? "dir" : "file", fce_event_names[event]);
+
+ bname = basename_safe(path);
if (udp_sockets == 0)
/* No listeners configured */
return AFP_OK;
- if (u_name == NULL)
- return AFPERR_PARAM;
/* do some initialization on the fly the first time */
if (first_event) {
fce_initialize_history();
- first_event = FCE_FALSE;
+ first_event = false;
}
/* handle files which should not cause events (.DS_Store atc. ) */
- for (int i = 0; skip_files[i] != NULL; i++)
- {
- if (!strcmp( u_name, skip_files[i]))
+ for (int i = 0; skip_files[i] != NULL; i++) {
+ if (strcmp(bname, skip_files[i]) == 0)
return AFP_OK;
}
-
- char full_path_buffer[MAXPATHLEN + 1] = {""};
- const char *cwd = getcwdpath();
-
- if (mode == FCE_TM_SIZE) {
- strlcpy(full_path_buffer, u_name, MAXPATHLEN);
- } else if (!is_dir || mode == FCE_DIR_DELETE) {
- if (strlen( cwd ) + strlen( u_name) + 1 >= MAXPATHLEN) {
- LOG(log_error, logtype_afpd, "FCE file name too long: %s/%s", cwd, u_name );
- return AFPERR_PARAM;
- }
- sprintf( full_path_buffer, "%s/%s", cwd, u_name );
- } else {
- if (strlen( cwd ) >= MAXPATHLEN) {
- LOG(log_error, logtype_afpd, "FCE directory name too long: %s", cwd);
- return AFPERR_PARAM;
- }
- strcpy( full_path_buffer, cwd);
- }
-
/* Can we ignore this event based on type or history? */
- if (!(mode & FCE_TM_SIZE) && fce_handle_coalescation( full_path_buffer, is_dir, mode ))
- {
- LOG(log_debug9, logtype_afpd, "Coalesced fc event <%d> for <%s>", mode, full_path_buffer );
+ if (fce_handle_coalescation(event, path, type)) {
+ LOG(log_debug9, logtype_fce, "Coalesced fc event <%d> for <%s>", event, path);
return AFP_OK;
}
- LOG(log_debug9, logtype_afpd, "Detected fc event <%d> for <%s>", mode, full_path_buffer );
-
- if (mode & FCE_FILE_MODIFY) {
- save_close_event(full_path_buffer);
- return AFP_OK;
+ switch (event) {
+ case FCE_FILE_MODIFY:
+ save_close_event(path);
+ break;
+ default:
+ send_fce_event(path, event);
+ break;
}
- send_fce_event( full_path_buffer, mode );
-
return AFP_OK;
}
/* check if configured holdclose time has passed */
if (last_close_event.time && ((last_close_event.time + fmodwait) < now)) {
- LOG(log_debug, logtype_afpd, "check_saved_close_events: sending event: %s", last_close_event.path);
+ LOG(log_debug, logtype_fce, "check_saved_close_events: sending event: %s", last_close_event.path);
/* yes, send event */
send_fce_event(&last_close_event.path[0], FCE_FILE_MODIFY);
last_close_event.path[0] = 0;
/*
* API-Calls for file change api, called form outside (file.c directory.c ofork.c filedir.c)
* */
-#ifndef FCE_TEST_MAIN
-
void fce_pending_events(AFPObj *obj)
{
- vol_fce_tm_event();
check_saved_close_events(obj->options.fce_fmodwait);
}
-int fce_register_delete_file( struct path *path )
-{
- int ret = AFP_OK;
-
- if (path == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_FILE_DELETE)))
- return ret;
-
- ret = register_fce( path->u_name, FALSE, FCE_FILE_DELETE );
-
- return ret;
-}
-int fce_register_delete_dir( char *name )
-{
- int ret = AFP_OK;
-
- if (name == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_DIR_DELETE)))
- return ret;
-
- ret = register_fce( name, TRUE, FCE_DIR_DELETE);
-
- return ret;
-}
-
-int fce_register_new_dir( struct path *path )
-{
- int ret = AFP_OK;
-
- if (path == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_DIR_CREATE)))
- return ret;
-
- ret = register_fce( path->u_name, TRUE, FCE_DIR_CREATE );
-
- return ret;
-}
-
-
-int fce_register_new_file( struct path *path )
-{
- int ret = AFP_OK;
-
- if (path == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_FILE_CREATE)))
- return ret;
-
- ret = register_fce( path->u_name, FALSE, FCE_FILE_CREATE );
-
- return ret;
-}
-
-int fce_register_file_modification( struct ofork *ofork )
-{
- char *u_name = NULL;
- struct vol *vol;
- int ret = AFP_OK;
-
- if (ofork == NULL || ofork->of_vol == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_FILE_MODIFY)))
- return ret;
-
- vol = ofork->of_vol;
-
- if (NULL == (u_name = mtoupath(vol, of_name(ofork), ofork->of_did, utf8_encoding())))
- {
- return AFPERR_MISC;
- }
-
- ret = register_fce( u_name, FALSE, FCE_FILE_MODIFY );
-
- return ret;
-}
-
-int fce_register_tm_size(const char *vol, size_t used)
-{
- int ret = AFP_OK;
-
- if (vol == NULL)
- return AFPERR_PARAM;
-
- if (!(fce_ev_enabled & (1 << FCE_TM_SIZE)))
- return ret;
-
- tm_used = used; /* oh what a hack */
- ret = register_fce(vol, FALSE, FCE_TM_SIZE);
-
- return ret;
-}
-#endif
-
/*
*
* Extern connect to afpd parameter, can be called multiple times for multiple listeners (up to MAX_UDP_SOCKS times)
fce_ev_enabled = 0;
- for (p = strtok(e, ","); p; p = strtok(NULL, ",")) {
+ for (p = strtok(e, ", "); p; p = strtok(NULL, ", ")) {
if (strcmp(p, "fmod") == 0) {
fce_ev_enabled |= (1 << FCE_FILE_MODIFY);
} else if (strcmp(p, "fdel") == 0) {
fce_ev_enabled |= (1 << FCE_FILE_CREATE);
} else if (strcmp(p, "dcre") == 0) {
fce_ev_enabled |= (1 << FCE_DIR_CREATE);
- } else if (strcmp(p, "tmsz") == 0) {
- fce_ev_enabled |= (1 << FCE_TM_SIZE);
}
}
free(e);
+
+ return AFP_OK;
}
#ifdef FCE_TEST_MAIN
}
int main( int argc, char*argv[] )
{
- int c,ret;
+ int c;
char *port = FCE_DEFAULT_PORT_STRING;
char *host = "localhost";
if (end_time && now >= end_time)
break;
- register_fce( path, 0, event_code );
+ fce_register(event_code, path, NULL, 0);
ev_cnt++;
projects / netatalk.git / blobdiff