diff options
Diffstat (limited to 'src/fsm.c')
| -rw-r--r-- | src/fsm.c | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -364,6 +364,35 @@ int osmo_fsm_inst_update_id_f(struct osmo_fsm_inst *fi, const char *fmt, ...) return 0; } +/*! Change id of the FSM instance using a string format, and ensuring a valid id. + * Replace any characters that are not permitted as FSM identifier with replace_with. + * \param[in] fi FSM instance. + * \param[in] replace_with Character to use instead of non-permitted FSM id characters. + * Make sure to choose a legal character, e.g. '-'. + * \param[in] fmt format string to compose new ID. + * \param[in] ... variable argument list for format string. + * \returns 0 if the ID was updated, otherwise -EINVAL. + */ +int osmo_fsm_inst_update_id_f_sanitize(struct osmo_fsm_inst *fi, char replace_with, const char *fmt, ...) +{ + char *id = NULL; + va_list ap; + int rc; + + if (!fmt) + return osmo_fsm_inst_update_id(fi, NULL); + + va_start(ap, fmt); + id = talloc_vasprintf(fi, fmt, ap); + va_end(ap); + + osmo_identifier_sanitize_buf(id, NULL, replace_with); + + rc = osmo_fsm_inst_update_id(fi, id); + talloc_free(id); + return rc; +} + /*! allocate a new instance of a specified FSM * \param[in] fsm Descriptor of the FSM * \param[in] ctx talloc context from which to allocate memory |