Devs,
Here is a simple patch to add support for creating a pid-file when
backgrounding. This is obviously not a high priority feature but it
makes it easier to track openconnect sessions after they have been
backgrounded. While I do not believe that my patch introduces any
bugs, my experience with C is very limited.
Steven Allen
---
main.c | 17 +++++++++++++++++
openconnect.8 | 9 +++++++++
2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/main.c b/main.c
index bee6502..0fef578 100644
--- a/main.c
+++ b/main.c
@@ -81,6 +81,7 @@ enum {
OPT_NO_HTTP_KEEPALIVE,
OPT_NO_PASSWD,
OPT_NO_PROXY,
+ OPT_PIDFILE,
OPT_PASSWORD_ON_STDIN,
OPT_PRINTCOOKIE,
OPT_RECONNECT_TIMEOUT,
@@ -91,6 +92,7 @@ enum {
static struct option long_options[] = {
{"background", 0, 0, 'b'},
+ {"pid-file", 1, 0, OPT_PIDFILE},
{"certificate", 1, 0, 'c'},
{"sslkey", 1, 0, 'k'},
{"cookie", 1, 0, 'C'},
@@ -143,6 +145,7 @@ void usage(void)
printf("Usage: openconnect [options] <server>\n");
printf("Open client for Cisco AnyConnect VPN, version %s\n\n", openconnect_version);
printf(" -b, --background Continue in background after startup\n");
+ printf(" --pid-file=PIDFILE Write the daemons pid to this file\n");
printf(" -c, --certificate=CERT Use SSL client certificate CERT\n");
printf(" -k, --sslkey=KEY Use SSL private key file KEY\n");
printf(" -K, --key-type=TYPE Private key type (PKCS#12 / TPM / PEM)\n");
@@ -230,6 +233,7 @@ int main(int argc, char **argv)
int autoproxy = 0;
uid_t uid = getuid();
int opt;
+ char *pidfile = NULL;
openconnect_init_openssl();
@@ -268,6 +272,9 @@ int main(int argc, char **argv)
case OPT_CAFILE:
vpninfo->cafile = optarg;
break;
+ case OPT_PIDFILE:
+ pidfile = optarg;
+ break;
case OPT_SERVERCERT:
vpninfo->servercert = optarg;
break;
@@ -571,6 +578,16 @@ int main(int argc, char **argv)
if (background) {
int pid;
if ((pid = fork())) {
+ if (pidfile != NULL) {
+ FILE *fp;
+ fp = fopen(pidfile, "w");
+ if (pidfile != NULL) {
+ fprintf(fp, "%d\n", pid);
+ fclose(fp);
+ } else {
+ fprintf(stderr, "Failed to open '%s' for writing\n", pidfile);
+ }
+ }
vpn_progress(vpninfo, PRG_INFO,
"Continuing in background; pid %d\n",
pid);
diff --git a/openconnect.8 b/openconnect.8
index 352fa89..ab71a64 100644
--- a/openconnect.8
+++ b/openconnect.8
@@ -7,6 +7,10 @@ openconnect \- Connect to Cisco AnyConnect VPN
.B -b,--background
]
[
+.B --pid-file
+.I PIDFILE
+]
+[
.B -c,--certificate
.I CERT
]
@@ -188,6 +192,11 @@ exchanged, which allows data transport over UDP to occur.
.B -b,--background
Continue in background after startup
.TP
+.B --pid-file=PIDFILE
+Save the pid to
+.I PIDFILE
+when backgrounding
+.TP
.B -c,--certificate=CERT
Use SSL client certificate
.I CERT
--
1.7.6
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