[Spice-devel] [PATCH fixup1 x11spice 1/3] Simplify string options and make sure they are freed when replaced.
Frediano Ziglio
fziglio at redhat.com
Wed Jul 24 14:52:18 UTC 2019
>
> This is largely the work of Frediano Ziglio <fziglio at redhat.com>.
>
> Signed-off-by: Jeremy White <jwhite at codeweavers.com>
Fine for me, ack
> ---
> src/options.c | 118 +++++++++++++++++++++++---------------------------
> 1 file changed, 54 insertions(+), 64 deletions(-)
>
> diff --git a/src/options.c b/src/options.c
> index 6c6ecb4e..cff4ac17 100644
> --- a/src/options.c
> +++ b/src/options.c
> @@ -45,54 +45,46 @@
> #include <libaudit.h>
> #endif
>
> +static void str_replace(char **dest, const char *src)
> +{
> + g_free(*dest);
> + *dest = src ? g_strdup(src) : NULL;
> +}
> +
> void options_init(options_t *options)
> {
> memset(options, 0, sizeof(*options));
> }
>
> -void ssl_options_free(ssl_options_t *ssl)
> +static void ssl_options_free(ssl_options_t *ssl)
> {
> - g_free(ssl->ca_cert_file);
> - g_free(ssl->certs_file);
> - g_free(ssl->private_key_file);
> - g_free(ssl->key_password);
> - g_free(ssl->dh_key_file);
> - g_free(ssl->ciphersuite);
> - *ssl = (ssl_options_t) { 0 };
> + str_replace(&ssl->ca_cert_file, NULL);
> + str_replace(&ssl->certs_file, NULL);
> + str_replace(&ssl->private_key_file, NULL);
> + str_replace(&ssl->key_password, NULL);
> + str_replace(&ssl->dh_key_file, NULL);
> + str_replace(&ssl->ciphersuite, NULL);
> }
>
> void options_free(options_t *options)
> {
> - g_free(options->display);
> - options->display = NULL;
> - g_free(options->listen);
> - options->listen = NULL;
> + str_replace(&options->display, NULL);
> + str_replace(&options->listen, NULL);
>
> ssl_options_free(&options->ssl);
> -
> - g_free(options->spice_password);
> - options->spice_password = NULL;
> - g_free(options->password_file);
> - options->password_file = NULL;
> -
> - g_free(options->virtio_path);
> - options->virtio_path = NULL;
> - g_free(options->uinput_path);
> - options->uinput_path = NULL;
> - g_free(options->on_connect);
> - options->on_connect = NULL;
> - g_free(options->on_disconnect);
> - options->on_disconnect = NULL;
> -
> - g_free(options->user_config_file);
> - options->user_config_file = NULL;
> -
> - g_free(options->system_config_file);
> - options->system_config_file = NULL;
> + str_replace(&options->spice_password, NULL);
> + str_replace(&options->password_file, NULL);
> +
> + str_replace(&options->virtio_path, NULL);
> + str_replace(&options->uinput_path, NULL);
> + str_replace(&options->on_connect, NULL);
> + str_replace(&options->on_disconnect, NULL);
> + str_replace(&options->user_config_file, NULL);
> + str_replace(&options->system_config_file, NULL);
> }
>
>
> -static gchar *string_option(GKeyFile *u, GKeyFile *s, const gchar *section,
> const gchar *key)
> +static void string_option(gchar **dest, GKeyFile *u, GKeyFile *s, const
> gchar *section, const gchar *key)
> {
> gchar *ret = NULL;
> GError *error = NULL;
> @@ -104,7 +96,8 @@ static gchar *string_option(GKeyFile *u, GKeyFile *s,
> const gchar *section, cons
> if (error)
> g_error_free(error);
>
> - return ret;
> + g_free(*dest);
> + *dest = ret;
> }
>
> static gint int_option(GKeyFile *u, GKeyFile *s, const gchar *section, const
> gchar *key)
> @@ -175,31 +168,28 @@ int options_handle_ssl(options_t *options, const char
> *spec)
> int i = 0;
> int rc = 0;
>
> - if (!in)
> - return X11SPICE_ERR_MALLOC;
> -
> for (p = strtok_r(in, ",", &save); p; p = strtok_r(NULL, ",", &save),
> i++) {
> if (strlen(p) == 0)
> continue;
>
> switch(i) {
> case 0:
> - options->ssl.ca_cert_file = g_strdup(p);
> + str_replace(&options->ssl.ca_cert_file, p);
> break;
> case 1:
> - options->ssl.certs_file = g_strdup(p);
> + str_replace(&options->ssl.certs_file, p);
> break;
> case 2:
> - options->ssl.private_key_file = g_strdup(p);
> + str_replace(&options->ssl.private_key_file, p);
> break;
> case 3:
> - options->ssl.key_password = g_strdup(p);
> + str_replace(&options->ssl.key_password, p);
> break;
> case 4:
> - options->ssl.dh_key_file = g_strdup(p);
> + str_replace(&options->ssl.dh_key_file, p);
> break;
> case 5:
> - options->ssl.ciphersuite = g_strdup(p);
> + str_replace(&options->ssl.ciphersuite, p);
> break;
> default:
> fprintf(stderr, "Error: invalid ssl specification.");
> @@ -216,12 +206,12 @@ void options_handle_ssl_file_options(options_t
> *options,
> GKeyFile *userkey, GKeyFile *systemkey)
> {
> options->ssl.enabled = bool_option(userkey, systemkey, "ssl",
> "enabled");
> - options->ssl.ca_cert_file = string_option(userkey, systemkey, "ssl",
> "ca-cert-file");
> - options->ssl.certs_file = string_option(userkey, systemkey, "ssl",
> "certs-file");
> - options->ssl.private_key_file = string_option(userkey, systemkey, "ssl",
> "private-key-file");
> - options->ssl.key_password = string_option(userkey, systemkey, "ssl",
> "key-password-file");
> - options->ssl.dh_key_file = string_option(userkey, systemkey, "ssl",
> "dh-key-file");
> - options->ssl.ciphersuite = string_option(userkey, systemkey, "ssl",
> "ciphersuite");
> + string_option(&options->ssl.ca_cert_file, userkey, systemkey, "ssl",
> "ca-cert-file");
> + string_option(&options->ssl.certs_file, userkey, systemkey, "ssl",
> "certs-file");
> + string_option(&options->ssl.private_key_file, userkey, systemkey, "ssl",
> "private-key-file");
> + string_option(&options->ssl.key_password, userkey, systemkey, "ssl",
> "key-password-file");
> + string_option(&options->ssl.dh_key_file, userkey, systemkey, "ssl",
> "dh-key-file");
> + string_option(&options->ssl.ciphersuite, userkey, systemkey, "ssl",
> "ciphersuite");
> }
>
> void options_handle_user_config(int argc, char *argv[], options_t *options)
> @@ -289,15 +279,15 @@ int options_parse_arguments(int argc, char *argv[],
> options_t *options)
> break;
>
> case OPTION_PASSWORD:
> - options->spice_password = g_strdup(optarg);
> + str_replace(&options->spice_password, optarg);
> break;
>
> case OPTION_PASSWORD_FILE:
> - options->password_file = g_strdup(optarg);
> + str_replace(&options->password_file, optarg);
> break;
>
> case OPTION_CONFIG:
> - /* This was handled previously; we can ignore */
> + str_replace(&options->user_config_file, optarg);
> break;
>
> case OPTION_SSL:
> @@ -316,7 +306,7 @@ int options_parse_arguments(int argc, char *argv[],
> options_t *options)
> break;
>
> case OPTION_DISPLAY:
> - options->display = g_strdup(optarg);
> + str_replace(&options->display, optarg);
> break;
>
> case OPTION_MINIMIZE:
> @@ -346,12 +336,12 @@ int options_parse_arguments(int argc, char *argv[],
> options_t *options)
> if (rc == 0) {
> if (optind >= argc) {
> /* Default */
> - options->listen = g_strdup("5900");
> + str_replace(&options->listen, "5900");
> } else if (optind < (argc - 1)) {
> fprintf(stderr, "Error: too many arguments\n");
> rc = X11SPICE_ERR_BADARGS;
> } else {
> - options->listen = g_strdup(argv[optind]);
> + str_replace(&options->listen, argv[optind]);
> }
> }
>
> @@ -386,17 +376,17 @@ void options_from_config(options_t *options)
> options->allow_control = bool_option(userkey, systemkey, "spice",
> "allow-control");
> options->generate_password = int_option(userkey, systemkey, "spice",
> "generate-password");
> options->hide = bool_option(userkey, systemkey, "spice", "hide");
> - options->display = string_option(userkey, systemkey, "spice",
> "display");
> + string_option(&options->display, userkey, systemkey, "spice",
> "display");
>
> - options->listen = string_option(userkey, systemkey, "spice", "listen");
> - options->spice_password = string_option(userkey, systemkey, "spice",
> "password");
> - options->password_file = string_option(userkey, systemkey, "spice",
> "password-file");
> + string_option(&options->listen, userkey, systemkey, "spice", "listen");
> + string_option(&options->spice_password, userkey, systemkey, "spice",
> "password");
> + string_option(&options->password_file, userkey, systemkey, "spice",
> "password-file");
> options->disable_ticketing = bool_option(userkey, systemkey, "spice",
> "disable-ticketing");
> options->exit_on_disconnect = bool_option(userkey, systemkey, "spice",
> "exit-on-disconnect");
> - options->virtio_path = string_option(userkey, systemkey, "spice",
> "virtio-path");
> - options->uinput_path = string_option(userkey, systemkey, "spice",
> "uinput-path");
> - options->on_connect = string_option(userkey, systemkey, "spice",
> "on-connect");
> - options->on_disconnect = string_option(userkey, systemkey, "spice",
> "on-disconnect");
> + string_option(&options->virtio_path, userkey, systemkey, "spice",
> "virtio-path");
> + string_option(&options->uinput_path, userkey, systemkey, "spice",
> "uinput-path");
> + string_option(&options->on_connect, userkey, systemkey, "spice",
> "on-connect");
> + string_option(&options->on_disconnect, userkey, systemkey, "spice",
> "on-disconnect");
> options->audit = bool_option(userkey, systemkey, "spice", "audit");
> options->audit_message_type = int_option(userkey, systemkey, "spice",
> "audit-message-type");
>
> @@ -445,7 +435,7 @@ static int process_password_file(options_t *options)
> if (p > buf && *(p - 1) == '\n')
> *(p - 1) = '\0';
>
> - options->spice_password = g_strdup(buf);
> + str_replace(&options->spice_password, buf);
>
> return rc;
> }
Frediano
More information about the Spice-devel
mailing list