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feat(server): Add support for -o option argument in server example

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Allow passing server configuration options via the -o flag and expose
ssh_bind_config_parse_string() as a public API.

Signed-off-by: Francesco <eferollo@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Francesco Rollo
2024-08-20 11:32:10 +02:00
committed by Jakub Jelen
parent 38932b74c0
commit edbd929fa2
5 changed files with 40 additions and 18 deletions
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16
examples/ssh_server.c
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@@ -107,6 +107,14 @@ static struct argp_option options[] = {
.doc = "Set the authorized keys file.",
.group = 0
},
{
.name = "option",
.key = 'o',
.arg = "OPTION",
.flags = 0,
.doc = "Set server configuration option [-o OptionName=Value]",
.group = 0
},
{
.name = "user",
.key = 'u',
@@ -158,6 +166,9 @@ parse_opt(int key, char *arg, struct argp_state *state)
case 'a':
strncpy(authorizedkeys, arg, DEF_STR_SIZE - 1);
break;
case 'o':
ssh_bind_config_parse_string(sshbind, arg);
break;
case 'u':
strncpy(username, arg, sizeof(username) - 1);
break;
@@ -194,7 +205,7 @@ parse_opt(int argc, char **argv, ssh_bind sshbind)
{
int key;
while((key = getopt(argc, argv, "a:e:k:p:P:r:u:v")) != -1) {
while((key = getopt(argc, argv, "a:e:k:o:p:P:r:u:v")) != -1) {
if (key == 'p') {
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDPORT_STR, optarg);
} else if (key == 'k') {
@@ -205,6 +216,8 @@ parse_opt(int argc, char **argv, ssh_bind sshbind)
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, optarg);
} else if (key == 'a') {
strncpy(authorizedkeys, optarg, DEF_STR_SIZE-1);
} else if (key == 'o') {
ssh_bind_config_parse_string(sshbind, optarg);
} else if (key == 'u') {
strncpy(username, optarg, sizeof(username) - 1);
} else if (key == 'P') {
@@ -222,6 +235,7 @@ parse_opt(int argc, char **argv, ssh_bind sshbind)
"libssh %s -- a Secure Shell protocol implementation\n"
"\n"
" -a, --authorizedkeys=FILE Set the authorized keys file.\n"
" -o, --option=OPTION Set server configuration option (e.g., -o OptionName=Value).\n"
" -e, --ecdsakey=FILE Set the ecdsa key (deprecated alias for 'k').\n"
" -k, --hostkey=FILE Set a host key. Can be used multiple times.\n"
" Implies no default keys.\n"