From: Olivier Dole <olivier.dole@palmsource.com>
To: BlueZ development <bluez-devel@lists.sourceforge.net>
Subject: [Bluez-devel] Proposal: patch for pand
Date: Thu, 02 Nov 2006 11:34:06 +0100 [thread overview]
Message-ID: <1162463647.19652.28.camel@ODole-Ubuntu> (raw)
[-- Attachment #1: Type: text/plain, Size: 991 bytes --]
Hi everyone,
For my work I need a similar mechanism to "devup" script in pand when a
PAN disconnection occurs.
That's why I've done the following patch (see attachment for source
code) which allows PAN daemon to run a "devdown" script either when a
disconnection is spotted i.e. remote device closes the connection or
when you explicitly do the disconnection. To use it, simply add the
following option to your command line:
pand --options --devdown /path/to/devdown-script
or
pand -options -o /path/to/devdown-script
or you can also read the pand man page ;)
The behaviour is the same as for "devup" script. I mean when the script
is run the following arguments are supplied to the script:
$1 <-> device interface e.g. "bnep0"
$2 <-> bluetooth address of the disconnected device e.g.
"00:45:78:AE:B4:01"
and of course your script must have the correct permissions to run.
Any feedback about this patch is of course welcome ;)
Hope you will find this patch usefull.
Regards,
Olivier DOLE
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: bluez_pand_dev-down.patch --]
[-- Type: text/x-patch; name=bluez_pand_dev-down.patch; charset=UTF-8, Size: 35279 bytes --]
diff -Naur pand.orig/main.c pand.new/main.c
--- pand.orig/main.c 2006-09-30 00:23:28.000000000 +0200
+++ pand.new/main.c 2006-11-02 11:03:27.000000000 +0100
@@ -73,6 +73,7 @@
static char netdev[16] = "bnep%d";
static char *pidfile = NULL;
static char *devupcmd = NULL;
+static char *devdowncmd = NULL;
static bdaddr_t src_addr = *BDADDR_ANY;
static int src_dev = -1;
@@ -89,15 +90,22 @@
KILL
} modes;
-static void run_devup(char *dev, char *dst, int sk, int nsk)
+struct script_arg {
+ char dev[20];
+ char dst[20];
+ int sk;
+ int nsk;
+};
+
+static void run_script(char *script, char *dev, char *dst, int sk, int nsk)
{
char *argv[4];
struct sigaction sa;
- if (!devupcmd)
+ if (!script)
return;
-
- if (access(devupcmd, R_OK | X_OK))
+
+ if (access(script, R_OK | X_OK))
return;
if (fork())
@@ -114,16 +122,57 @@
sigaction(SIGCHLD, &sa, NULL);
sigaction(SIGPIPE, &sa, NULL);
- argv[0] = devupcmd;
+ argv[0] = script;
argv[1] = dev;
argv[2] = dst;
argv[3] = NULL;
- execv(devupcmd, argv);
+ execv(script, argv);
exit(1);
}
+/* Wait for disconnect or error condition on the socket */
+static int w4_hup(int sk, struct script_arg *down_cmd)
+{
+ struct pollfd pf;
+ sigset_t sigs;
+ int n;
+
+ sigfillset(&sigs);
+ sigdelset(&sigs, SIGCHLD);
+ sigdelset(&sigs, SIGPIPE);
+ sigdelset(&sigs, SIGTERM);
+ sigdelset(&sigs, SIGINT);
+ sigdelset(&sigs, SIGHUP);
+
+ while (!terminate) {
+ pf.fd = sk;
+ pf.events = POLLERR | POLLHUP;
+ n = ppoll(&pf, 1, NULL, &sigs);
+ if (n < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ syslog(LOG_ERR, "Poll failed. %s(%d)",
+ strerror(errno), errno);
+ return 1;
+ }
+
+ if (n) {
+ int err = 0;
+ socklen_t olen = sizeof(err);
+ getsockopt(sk, SOL_SOCKET, SO_ERROR, &err, &olen);
+ syslog(LOG_INFO, "%s disconnected%s%s", netdev,
+ err ? " : " : "", err ? strerror(err) : "");
+ if (down_cmd)
+ run_script(devdowncmd, down_cmd->dev, down_cmd->dst, down_cmd->sk, down_cmd->nsk);
+ close(sk);
+ return 0;
+ }
+ }
+ return 0;
+}
+
static int do_listen(void)
{
struct l2cap_options l2o;
@@ -207,12 +256,21 @@
if (!bnep_accept_connection(nsk, role, devname)) {
char str[40];
+ struct script_arg down_cmd;
+
ba2str(&l2a.l2_bdaddr, str);
syslog(LOG_INFO, "New connection from %s %s",
- str, devname);
+ str, netdev);
- run_devup(devname, str, sk, nsk);
+ run_script(devupcmd, devname, str, sk, nsk);
+
+ memset(&down_cmd, 0, sizeof(struct script_arg));
+ strncpy(down_cmd.dev, devname, strlen(devname) + 1);
+ strncpy(down_cmd.dst, str, strlen(str) + 1);
+ down_cmd.sk = sk;
+ down_cmd.nsk = nsk;
+ w4_hup(nsk, &down_cmd);
} else {
syslog(LOG_ERR, "Connection failed. %s(%d)",
strerror(errno), errno);
@@ -227,46 +285,6 @@
return 0;
}
-/* Wait for disconnect or error condition on the socket */
-static int w4_hup(int sk)
-{
- struct pollfd pf;
- sigset_t sigs;
- int n;
-
- sigfillset(&sigs);
- sigdelset(&sigs, SIGCHLD);
- sigdelset(&sigs, SIGPIPE);
- sigdelset(&sigs, SIGTERM);
- sigdelset(&sigs, SIGINT);
- sigdelset(&sigs, SIGHUP);
-
- while (!terminate) {
- pf.fd = sk;
- pf.events = POLLERR | POLLHUP;
- n = ppoll(&pf, 1, NULL, &sigs);
- if (n < 0) {
- if (errno == EINTR || errno == EAGAIN)
- continue;
- syslog(LOG_ERR, "Poll failed. %s(%d)",
- strerror(errno), errno);
- return 1;
- }
-
- if (n) {
- int err = 0;
- socklen_t olen = sizeof(err);
- getsockopt(sk, SOL_SOCKET, SO_ERROR, &err, &olen);
- syslog(LOG_INFO, "%s disconnected%s%s", netdev,
- err ? " : " : "", err ? strerror(err) : "");
-
- close(sk);
- return 0;
- }
- }
- return 0;
-}
-
/* Connect and initiate BNEP session
* Returns:
* -1 - critical error (exit persist mode)
@@ -279,6 +297,7 @@
struct sockaddr_l2 l2a;
socklen_t olen;
int sk, r = 0;
+ struct script_arg down_cmd;
syslog(LOG_INFO, "Connecting to %s", dst);
@@ -314,10 +333,15 @@
syslog(LOG_INFO, "%s connected", netdev);
- run_devup(netdev, dst, sk, -1);
+ run_script(devupcmd, netdev, dst, sk, -1);
- if (persist) {
- w4_hup(sk);
+ if (persist || devdowncmd) {
+ memset(&down_cmd, 0, sizeof(struct script_arg));
+ strncpy(down_cmd.dev, netdev, strlen(netdev) + 1);
+ strncpy(down_cmd.dst, dst, strlen(dst) + 1);
+ down_cmd.sk = sk;
+ down_cmd.nsk = -1;
+ w4_hup(sk, &down_cmd);
if (terminate && cleanup) {
syslog(LOG_INFO, "Disconnecting from %s.", dst);
@@ -525,11 +549,12 @@
{ "cache", 0, 0, 'C' },
{ "pidfile", 1, 0, 'P' },
{ "devup", 1, 0, 'u' },
+ { "devdown", 1, 0, 'o' },
{ "autozap", 0, 0, 'z' },
{ 0, 0, 0, 0 }
};
-static char main_sopts[] = "hsc:k:Kr:d:e:i:lnp::DQ::AESMC::P:u:z";
+static char main_sopts[] = "hsc:k:Kr:d:e:i:lnp::DQ::AESMC::P:u:o:z";
static char main_help[] =
"Bluetooth PAN daemon version " VERSION " \n"
@@ -556,7 +581,8 @@
"\t--persist -p[interval] Persist mode\n"
"\t--cache -C[valid] Cache addresses\n"
"\t--pidfile -P <pidfile> Create PID file\n"
- "\t--devup -u <script> Script to run when interface comes up\n";
+ "\t--devup -u <script> Script to run when interface comes up\n"
+ "\t--devdown -o <script> Script to run when interface comes down\n";
int main(int argc, char *argv[])
{
@@ -661,6 +687,10 @@
devupcmd = strdup(optarg);
break;
+ case 'o':
+ devdowncmd = strdup(optarg);
+ break;
+
case 'z':
cleanup = 1;
break;
diff -Naur pand.orig/.main.c.swp pand.new/.main.c.swp
--- pand.orig/.main.c.swp 1970-01-01 01:00:00.000000000 +0100
+++ pand.new/.main.c.swp 2006-11-02 11:03:31.000000000 +0100
@@ -0,0 +1,70 @@
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See the\0 * but WITHOUT ANY WARRANTY; without even the implied warranty of\0 * This program is distributed in the hope that it will be useful,\0 *\0 * (at your option) any later version.\0 * the Free Software Foundation; either version 2 of the License, or\0 * it under the terms of the GNU General Public License as published by\0 * This program is free software; you can redistribute it and/or modify\0 *\0 *\0 * Copyright (C) 2002-2006 Marcel Holtmann <marcel@holtmann.org>\0 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>\0 *\0 * BlueZ - Bluetooth protocol stack for Linux\0 *\0/*\0ad\0\0æ\x02\0\0Æ\x05\0\0\0\x10\0\0³\0\0\0æ\x0f\0\0Ü\x0f\0\0Û\x0f\0\0Ï\x0f\0\0¼\x0f\0\0\x0f\0\0‰\x0f\0\0\x7f\x0f\0\0~\x0f\0\0r\x0f\0\0b\x0f\0\0S\x0f\0\09\x0f\0\0/\x0f\0\0.\x0f\0\0"\x0f\0\0\x12\x0f\0\0\x03\x0f\0\0ù\x0e\0\0ø\x0e\0\0ì\x0e\0\0Ó\x0e\0\0É\x0e\0\0È\x0e\0\0¼\x0e\0\0œ\x0e\0\0’\x0e\0\0‘\x0e\0\0…\x0e\0\0b\x0e\0\0X\x0e\0\0W\x0e\0\0K\x0e\0\0;\x0e\0\01\x0e\0\00\x0e\0\0$\x0e\0\0\x05\x0e\0\0û\r\0\0ú\r\0\0î\r\0\0Ì\r\0\0Â\r\0\0Á\r\0\0µ\r\0\0”\r\0\0Š\r\0\0‰\r\0\0}\r\0\0\\r\0\0R\r\0\0Q\r\0\0E\r\0\0%\r\0\0\x0f\r\0\0\x05\r\0\0\x04\r\0\0ø\f\0\0é\f\0\0ß\f\0\0Þ\f\0\0Ò\f\0\0Ã\f\0\0§\f\0\0Ÿ\f\0\0Ž\f\0\0„\f\0\0ƒ\f\0\0w\f\0\0h\f\0\0J\f\0\0B\f\0\0/\f\0\0%\f\0\0$\f\0\0\x18\f\0\0û\v\0\0ñ\v\0\0ð\v\0\0ä\v\0\0Æ\v\0\0¼\v\0\0»\v\0\0¯\v\0\0\v\0\0…\v\0\0„\v\0\0x\v\0\0h\v\0\0^\v\0\0]\v\0\0Q\v\0\0F\v\0\00\v\0\0$\v\0\0 \v\0\0\x1d\v\0\0\x1c\v\0\0\v\v\0\0ú
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1);\0\0 use_cache = 0;\0 /* Disable cache invalidation */\0 if (dst) {\0\0 return -1;\0 if (pidfile && write_pidfile())\0\0 }\0 }\0 return -1;\0 strerror(errno), errno);\0 syslog(LOG_ERR, "Invalid source. %s(%d)",\0 if (src_dev < 0 || hci_devba(src_dev, &src_addr) < 0) {\0 src_dev = hci_devid(src);\0 if (src) {\0\0 syslog(LOG_INFO, "Bluetooth PAN daemon version %s", VERSION);\0 openlog("pand", LOG_PID | LOG_NDELAY | LOG_PERROR, LOG_DAEMON);\0\0 }\0 exit(1);\0 perror("Can't start daemon");\0 if (detach && daemon(0, 0)) {\0\0 sigaction(SIGINT, &sa, NULL);\0 sigaction(SIGTERM, &sa, NULL);\0 sa.sa_handler = sig_term;\0\0 sigaction(SIGHUP, &sa, NULL);\0 sa.sa_handler = sig_hup;\0\0 sigaction(SIGPIPE, &sa, NULL);\0 sigaction(SIGCHLD, &sa, NULL);\0 sa.sa_handler = SIG_IGN;\0 sa.sa_flags = SA_NOCLDSTOP;\0 memset(&sa, 0, sizeof(sa));\0 /* Initialize signals */\0\0 }\0 return 0;\0 printf(main_help);\0 case NONE:\0\0 return 0;\0 do_kill(dst);\0 case KILL:\0\0 return 0;\0 do_show();\0 case SHOW:\0 switch (mode) {\0 /* Check non daemon modes first */\0\0 return -1;\0 if (bnep_init())\0\0 optind = 0;\0 argv += optind;\0 argc -= optind;\0\0 }\0 }\0 exit(0);\0 printf(main_help);\0 default:\0 case 'h':\0\0 break;\0 cleanup = 1;\0 case 'z':\0\0 break;\0 devdowncmd = strdup(optarg);\0 case 'o':\0\0 break;\0 devupcmd = strdup(optarg);\0 case 'u':\0\0 break;\0 pidfile = strdup(optarg);\0 case 'P':\0\0 break;\0 use_cache = 2;\0 else\0 use_cache = atoi(optarg);\0 if (optarg)\0 case 'C':\0\0 break;\0 persist = 5;\0 else\0 persist = atoi(optarg);\0 if (optarg)\0 case 'p':\0\0 break;\0 detach = 0;\0 case 'n':\0\0 break;\0 netdev[15] = '\0';\0 strncpy(netdev, optarg, 16);\0 case 'e':\0\0 break;\0 link_mode |= L2CAP_LM_MASTER;\0 case 'M':\0\0 break;\0 link_mode |= L2CAP_LM_SECURE;\0 case 'S':\0\0 break;\0 link_mode |= L2CAP_LM_ENCRYPT;\0 case 'E':\0\0 break;\0 link_mode |= L2CAP_LM_AUTH;\0 case 'A':\0\0 break;\0 use_sdp = 0;\0 case 'D':\0\0 break;\0 bnep_str2svc(optarg, &service);\0 case 'd':\0\0 break;\0 bnep_str2svc(optarg, &role);\0 case 'r':\0\0 break;\0 src = strdup(optarg);\0 case 'i':\0\0 break;\0 detach = 0;\0 mode = KILL;\0 case 'K':\0\0 break;\0 dst = strdup(optarg);\0 detach = 0;\0 mode = KILL;\0 case 'k':\0\0 break;\0 search_duration = atoi(optarg);\0 if (optarg)\0 mode = CONNECT;\0 case 'Q':\0\0 break;\0 dst = strdup(optarg);\0ad\0\0\f\0\0\0x\x02\0\0\0\x10\0\0–\0\0\0Ê\x0f\0\0—\x0f\0\0f\x0f\0\0T\x0f\0\0ý\x0e\0\0ï\x0e\0\0â\x0e\0\0Þ\x0e\0\0Û\x0e\0\0Ð\x0e\0\0Î\x0e\0\0Í\x0e\0\0²\x0e\0\0°\x0e\0\0•\x0e\0\0|\x0e\0\0k\x0e\0\0^\x0e\0\0]\x0e\0\0O\x0e\0\0)\x0e\0\0(\x0e\0\0õ\r\0\0º\r\0\0«\r\0\0s\r\0\0T\r\0\0G\r\0\0D\r\0\0C\r\0\0$\r\0\0\x05\r\0\0â\f\0\0Ã\f\0\0Â\f\0\0Š\f\0\0a\f\0\0B\f\0\05\f\0\02\f\0\01\f\0\0ÿ\v\0\0à\v\0\0Ë\v\0\0‰\v\0\0P\v\0\01\v\0\0$\v\0\0!\v\0\0 \v\0\0ÿ
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+\0\0È
+\0\0¬
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+\0\0è \0\0Ì \0\0° \0\0” \0\0x \0\0\ \0\0@ \0\0$ \0\0\x14 \0\0\x11 \0\0\x10 \0\0Ë\b\0\0Ê\b\0\0¯\b\0\0€\b\0\0t\b\0\0^\b\0\0P\b\0\0\x13\b\0\0×\a\0\0 \a\0\0^\a\0\0*\a\0\0õ\x06\0\0»\x06\0\0{\x06\0\07\x06\0\0ÿ\x05\0\0Ð\x05\0\0£\x05\0\0l\x05\0\09\x05\0\0\x06\x05\0\0Æ\x04\0\0Ž\x04\0\0`\x04\0\0/\x04\0\0þ\x03\0\0·\x03\0\0p\x03\0\0o\x03\0\0N\x03\0\0L\x03\0\0,\x03\0\0\x16\x03\0\0\x04\x03\0\0ú\x02\0\0ù\x02\0\0¬\x02\0\0œ\x02\0\0\x02\0\0€\x02\0\0q\x02\0\0g\x02\0\0f\x02\0\0Z\x02\0\0H\x02\0\0>\x02\0\0=\x02\0\01\x02\0\0\x1e\x02\0\0\x1d\x02\0\0\0\0\0\0\0\0\0\0\0\0 mode = CONNECT;\0 case 'c':\0\0 break;\0 mode = LISTEN;\0 case 's':\0\0 break;\0 detach = 0;\0 mode = SHOW;\0 case 'l':\0 switch(opt) {\0 while ((opt=getopt_long(argc, argv, main_sopts, main_lopts, NULL)) != -1) {\0\0 int opt;\0 int mode = NONE;\0 struct sigaction sa;\0 char *dst = NULL, *src = NULL;\0{\0int main(int argc, char *argv[])\0\0 "\t--devdown -o <script> Script to run when interface comes down\n";\0 "\t--devup -u <script> Script to run when interface comes up\n"\0 "\t--pidfile -P <pidfile> Create PID file\n"\0 "\t--cache -C[valid] Cache addresses\n"\0 "\t--persist -p[interval] Persist mode\n"\0 "\t--nodetach -n Do not become a daemon\n"\0 "\t--master -M Become the master of a piconet\n"\0 "\t--secure -S Secure connection\n"\0 "\t--encrypt -E Enable encryption\n"\0 "\t--auth -A Enable authentication\n"\0 "\t--nosdp -D Disable SDP\n"\0 "\t--device -i <bdaddr> Source bdaddr\n"\0 "\t--ethernet -e <name> Network interface name\n"\0 "\t--service -d <role> Remote PAN service (PANU, NAP, GN)\n"\0 "\t--role -r <role> Local PAN role (PANU, NAP, GN)\n"\0 "\t--killall -K Kill all PAN connections\n"\0 "\t--kill -k <bdaddr> Kill PAN connection\n"\0 "\t--search -Q[duration] Search and connect\n"\0 "\t--autozap -z Disconnect automatically on exit\n"\0 "\t--connect -c <bdaddr> Create PAN connection\n"\0 "\t--listen -s Listen for PAN connections\n"\0 "\t--show --list -l Show active PAN connections\n"\0 "Options:\n"\0 "\tpand <options>\n"\0 "Usage:\n"\0 "Bluetooth PAN daemon version " VERSION " \n"\0static char main_help[] = \0\0static char main_sopts[] = "hsc:k:Kr:d:e:i:lnp::DQ::AESMC::P:u:o:z";\0\0};\0 { 0, 0, 0, 0 }\0 { "autozap", 0, 0, 'z' },\0 { "devdown", 1, 0, 'o' },\0 { "devup", 1, 0, 'u' },\0 { "pidfile", 1, 0, 'P' },\0 { "cache", 0, 0, 'C' },\0 { "master", 0, 0, 'M' },\0 { "secure", 0, 0, 'S' },\0 { "encrypt", 0, 0, 'E' },\0 { "auth", 0, 0, 'A' },\0 { "persist", 2, 0, 'p' },\0 { "nodetach", 0, 0, 'n' },\0 { "show", 0, 0, 'l' },\0 { "list", 0, 0, 'l' },\0 { "nosdp", 0, 0, 'D' },\0 { "device", 1, 0, 'i' },\0 { "ethernet", 1, 0, 'e' },\0 { "service", 1, 0, 'd' },\0 { "role", 1, 0, 'r' },\0 { "killall", 0, 0, 'K' },\0 { "kill", 1, 0, 'k' },\0 { "search", 2, 0, 'Q' },\0 { "connect", 1, 0, 'c' },\0 { "listen", 0, 0, 's' },\0 { "help", 0, 0, 'h' },\0static struct option main_lopts[] = {\0\0}\0 return 0;\0\0 fclose(f);\0 fprintf(f, "%d\n", getpid());\0\0 }\0 return -1;\0 unlink(pidfile);\0 close(fd);\0 strerror(errno), errno);\0 syslog(LOG_ERR, "Could not fdopen new pidfile: %s(%d)",\0 if (!f) {\0 f = fdopen(fd, "w");\0\0 } while(fd == -1);\0 }\0 }\0 }\0 return -1;\0 pidfile = NULL;\0 syslog(LOG_INFO, "Signalling existing process %d and exiting\n", pid);\0 * our way out. */\0 /* Got it. Don't mess with the pid file on\0 } else {\0 fd = -1;\0 unlink(pidfile);\0 syslog(LOG_INFO, "Removing stale pidfile");\0 /* No such pid; remove the bogus pid file. */\0 if (kill(pid, SIGHUP) == -1) {\0 /* Try to kill it. */\0 if (pid) {\0\0 fclose(f);\0 pid = 0;\0 if (fscanf(f, "%d", &pid) != 1)\0 pid = 0;\0\0 }\0 return -1;\0 close(fd);\0 strerror(errno), errno);\0 syslog(LOG_ERR, "Could not fdopen old pidfile: %s(%d)",\0 if (!f) {\0 f = fdopen(fd, "r");\0 */\0 * deleting the pid file for the already-running instance.\0 * background. Muck with the filename so that we don't go\0
\ Pas de fin de ligne à la fin du fichier.
diff -Naur pand.orig/pand.1 pand.new/pand.1
--- pand.orig/pand.1 2006-06-04 15:05:36.000000000 +0200
+++ pand.new/pand.1 2006-11-02 10:58:31.000000000 +0100
@@ -66,6 +66,9 @@
\fB\-\-devup\fR \fB\-u <script>\fR
Script to run when interface comes up
.TP
+\fB\-\-devdown\fR \fB\-o <script>\fR
+Script to run when interface comes down. The script is executed with \fIdevice\fR \fIdestination\fR as arguments.
+.TP
\fB\-\-autozap\fR \fB\-z\fR
Disconnect automatically on exit
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_______________________________________________
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next reply other threads:[~2006-11-02 10:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-02 10:34 Olivier Dole [this message]
2006-11-02 10:38 ` [Bluez-devel] Proposal: patch for pand Olivier Dole
2006-11-07 13:28 ` Olivier Dole
2007-02-26 0:11 ` Marcel Holtmann
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