Fix: pipeline mode API parameters check

Pipeline API for st20, st22, and st30 TX will
segfault when NULL parameters are passed to them.

Fix by adding a null guard that will return NULL
if any of the parameters are null

TODO: Tests for this cases and testing environment
for experimental st40 API as no testing is
implemented yet for this pipeline.

Author: DawidWesierski4

lib/src/st2110/experimental/st40_pipeline_tx.c

@@ -441,6 +441,12 @@ st40p_tx_handle st40p_tx_create(mtl_handle mt, struct st40p_tx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (MT_HANDLE_MAIN != impl->type) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st20_pipeline_rx.c

@@ -938,6 +938,12 @@ st20p_rx_handle st20p_rx_create(mtl_handle mt, struct st20p_rx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st20_pipeline_tx.c

@@ -783,6 +783,12 @@ st20p_tx_handle st20p_tx_create(mtl_handle mt, struct st20p_tx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st22_pipeline_rx.c

@@ -657,6 +657,12 @@ st22p_rx_handle st22p_rx_create(mtl_handle mt, struct st22p_rx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st22_pipeline_tx.c

@@ -783,6 +783,12 @@ st22p_tx_handle st22p_tx_create(mtl_handle mt, struct st22p_tx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st30_pipeline_rx.c

@@ -393,6 +393,12 @@ st30p_rx_handle st30p_rx_create(mtl_handle mt, struct st30p_rx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;

lib/src/st2110/pipeline/st30_pipeline_tx.c

@@ -470,6 +470,12 @@ st30p_tx_handle st30p_tx_create(mtl_handle mt, struct st30p_tx_ops* ops) {
 
   notice("%s, start for %s\n", __func__, mt_string_safe(ops->name));
 
+  /* validate the input parameters */
+  if (!mt || !ops) {
+    err("%s(%d), NULL input parameters \n", __func__, idx);
+    return NULL;
+  }
+
   if (impl->type != MT_HANDLE_MAIN) {
     err("%s, invalid type %d\n", __func__, impl->type);
     return NULL;