[sr-dev] git:5.4:cbe81cd6: imc: safety checks for function parameters

Module: kamailio Branch: 5.4 Commit: cbe81cd6941c277893958d5be45655ac21c6890e URL: https://github.com/kamailio/kamailio/commit/cbe81cd6941c277893958d5be45655a… Author: Daniel-Constantin Mierla <miconda(a)gmail.com> Committer: Daniel-Constantin Mierla <miconda(a)gmail.com> Date: 2021-04-15T08:35:05+02:00 imc: safety checks for function parameters (cherry picked from commit 6c8d61850aa662016d952f25dc510ed4d602e10c) --- Modified: src/modules/imc/imc_cmd.c --- Diff: https://github.com/kamailio/kamailio/commit/cbe81cd6941c277893958d5be45655a… Patch: https://github.com/kamailio/kamailio/commit/cbe81cd6941c277893958d5be45655a… --- diff --git a/src/modules/imc/imc_cmd.c b/src/modules/imc/imc_cmd.c index 94ddc38884..8d9c6f3ea1 100644 --- a/src/modules/imc/imc_cmd.c +++ b/src/modules/imc/imc_cmd.c @@ -488,6 +488,10 @@ int imc_handle_join(struct sip_msg* msg, imc_cmd_t *cmd, str body; struct imc_uri room; + if(cmd==NULL || src==NULL || dst==NULL) { + return -1; + } + memset(&room, '\0', sizeof(room)); if (build_imc_uri(&room, cmd->param[0].s ? cmd->param[0] : dst->parsed.user, &dst->parsed)) goto error; @@ -537,12 +541,14 @@ int imc_handle_join(struct sip_msg* msg, imc_cmd_t *cmd, goto error; } - body.len = snprintf(body.s, sizeof(imc_body_buf), msg_user_joined.s, STR_FMT(format_uri(src->uri))); + body.len = snprintf(body.s, sizeof(imc_body_buf), msg_user_joined.s, + STR_FMT(format_uri(src->uri))); } else { LM_DBG("Attept to join private room [%.*s] by [%.*s]\n", STR_FMT(&rm->uri), STR_FMT(&src->uri)); - body.len = snprintf(body.s, sizeof(imc_body_buf), msg_join_attempt_bcast.s, STR_FMT(format_uri(src->uri))); + body.len = snprintf(body.s, sizeof(imc_body_buf), msg_join_attempt_bcast.s, + STR_FMT(format_uri(src->uri))); imc_send_message(&rm->uri, &src->uri, build_headers(msg), &msg_join_attempt_ucast); } @@ -563,7 +569,7 @@ int imc_handle_join(struct sip_msg* msg, imc_cmd_t *cmd, rv = 0; error: - if (room.uri.s) pkg_free(room.uri.s); + if (room.uri.s != NULL) pkg_free(room.uri.s); if (rm != NULL) imc_release_room(rm); return rv; }