[sr-dev] git:5.3:7e5b726e: core: safety checks for xavp operations

Module: kamailio Branch: 5.3 Commit: 7e5b726ec106fcc06f9ed406570b3f5fea72bd7e URL: https://github.com/kamailio/kamailio/commit/7e5b726ec106fcc06f9ed406570b3f5… Author: Daniel-Constantin Mierla <miconda(a)gmail.com> Committer: Daniel-Constantin Mierla <miconda(a)gmail.com> Date: 2019-11-27T20:30:17+01:00 core: safety checks for xavp operations (cherry picked from commit 1067abf87cdaabc9557a99b36ad60e2349e16fa5) --- Modified: src/core/xavp.c --- Diff: https://github.com/kamailio/kamailio/commit/7e5b726ec106fcc06f9ed406570b3f5… Patch: https://github.com/kamailio/kamailio/commit/7e5b726ec106fcc06f9ed406570b3f5… --- diff --git a/src/core/xavp.c b/src/core/xavp.c index e5e33f6e9d..7351d830bd 100644 --- a/src/core/xavp.c +++ b/src/core/xavp.c @@ -52,6 +52,9 @@ void xavp_shm_free_unsafe(void *p) void xavp_free(sr_xavp_t *xa) { + if(xa==NULL) { + return; + } if(xa->val.type == SR_XTYPE_DATA) { if(xa->val.v.data!=NULL && xa->val.v.data->pfree!=NULL) { xa->val.v.data->pfree(xa->val.v.data->p, xavp_shm_free); @@ -69,6 +72,9 @@ void xavp_free(sr_xavp_t *xa) void xavp_free_unsafe(sr_xavp_t *xa) { + if(xa==NULL) { + return; + } if(xa->val.type == SR_XTYPE_DATA) { if(xa->val.v.data!=NULL && xa->val.v.data->pfree!=NULL) { xa->val.v.data->pfree(xa->val.v.data->p, xavp_shm_free_unsafe); @@ -122,8 +128,9 @@ static sr_xavp_t *xavp_new_value(str *name, sr_xval_t *val) int xavp_add(sr_xavp_t *xavp, sr_xavp_t **list) { - if (xavp==NULL) + if (xavp==NULL) { return -1; + } /* Prepend new xavp to the list */ if(list) { xavp->next = *list; @@ -141,8 +148,9 @@ int xavp_add_last(sr_xavp_t *xavp, sr_xavp_t **list) sr_xavp_t *prev; sr_xavp_t *crt; - if (xavp==NULL) + if (xavp==NULL) { return -1; + } crt = xavp_get_internal(&xavp->name, list, 0, 0); @@ -172,6 +180,10 @@ int xavp_add_last(sr_xavp_t *xavp, sr_xavp_t **list) int xavp_add_after(sr_xavp_t *nxavp, sr_xavp_t *pxavp) { + if (nxavp==NULL) { + return -1; + } + if(pxavp==NULL) { nxavp->next = *_xavp_list_crt; *_xavp_list_crt = nxavp; @@ -296,7 +308,7 @@ static sr_xavp_t *xavp_get_internal(str *name, sr_xavp_t **list, int idx, sr_xav if(name==NULL || name->s==NULL) return NULL; id = get_hash1_raw(name->s, name->len); - + if(list && *list) avp = *list; else @@ -333,7 +345,7 @@ sr_xavp_t *xavp_get_next(sr_xavp_t *start) if(start==NULL) return NULL; - + avp = start->next; while(avp) { @@ -477,7 +489,7 @@ int xavp_count(str *name, sr_xavp_t **start) if(name==NULL || name->s==NULL) return -1; id = get_hash1_raw(name->s, name->len); - + if(start) avp = *start; else @@ -529,7 +541,7 @@ void xavp_destroy_list(sr_xavp_t **head) void xavp_reset_list(void) { assert(_xavp_list_crt!=0 ); - + if (_xavp_list_crt!=&_xavp_list_head) _xavp_list_crt=&_xavp_list_head; xavp_destroy_list(_xavp_list_crt); @@ -539,7 +551,7 @@ void xavp_reset_list(void) sr_xavp_t **xavp_set_list(sr_xavp_t **head) { sr_xavp_t **avp; - + assert(_xavp_list_crt!=0); avp = _xavp_list_crt; @@ -775,6 +787,10 @@ int xavp_insert(sr_xavp_t *xavp, int idx, sr_xavp_t **list) int n = 0; int i = 0; + if(xavp==NULL) { + return -1; + } + crt = xavp_get_internal(&xavp->name, list, 0, NULL); if (idx == 0 && (!crt || crt->val.type != SR_XTYPE_NULL)) @@ -840,7 +856,7 @@ sr_xavp_t *xavp_extract(str *name, sr_xavp_t **list) avp->next = NULL; } } - + return avp; }