NetworkPkg: Replace ASSERT with error return code in PXE and HTTP boot driver.

[mirror_edk2.git] / NetworkPkg / UefiPxeBcDxe / PxeBcDhcp6.c

diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp6.c b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp6.c
index 6a08e9a2de68a56cebf1c71174ec6364af4119bc..a295b827afbca7a37e165cc2144bca85b0625e8c 100644 (file)
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp6.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp6.c
@@ -181,17 +181,24 @@ PxeBcBuildDhcp6Options (
   @param[in]  Dst          The pointer to the cache buffer for DHCPv6 packet.\r
   @param[in]  Src          The pointer to the DHCPv6 packet to be cached.\r
 \r
+  @retval     EFI_SUCCESS                Packet is copied.\r
+  @retval     EFI_BUFFER_TOO_SMALL       Cache buffer is not big enough to hold the packet.\r
+\r
 **/\r
-VOID\r
+EFI_STATUS\r
 PxeBcCacheDhcp6Packet (\r
   IN EFI_DHCP6_PACKET          *Dst,\r
   IN EFI_DHCP6_PACKET          *Src\r
   )\r
 {\r
-  ASSERT (Dst->Size >= Src->Length);\r
+  if (Dst->Size < Src->Length) {\r
+    return EFI_BUFFER_TOO_SMALL;\r
+  }\r
 \r
   CopyMem (&Dst->Dhcp6, &Src->Dhcp6, Src->Length);\r
   Dst->Length = Src->Length;\r
+\r
+  return EFI_SUCCESS;\r
 }\r
 \r
 \r
@@ -749,8 +756,11 @@ PxeBcParseDhcp6Packet (
   @param[in]  Ack                 The pointer to the DHCPv6 ack packet.\r
   @param[in]  Verified            If TRUE, parse the ACK packet and store info into mode data.\r
 \r
+  @retval     EFI_SUCCESS                Cache and parse the packet successfully.\r
+  @retval     EFI_BUFFER_TOO_SMALL       Cache buffer is not big enough to hold the packet.\r
+\r
 **/\r
-VOID\r
+EFI_STATUS\r
 PxeBcCopyDhcp6Ack (\r
   IN PXEBC_PRIVATE_DATA   *Private,\r
   IN EFI_DHCP6_PACKET     *Ack,\r
@@ -758,10 +768,14 @@ PxeBcCopyDhcp6Ack (
   )\r
 {\r
   EFI_PXE_BASE_CODE_MODE  *Mode;\r
+  EFI_STATUS              Status;\r
 \r
   Mode = Private->PxeBc.Mode;\r
 \r
-  PxeBcCacheDhcp6Packet (&Private->DhcpAck.Dhcp6.Packet.Ack, Ack);\r
+  Status = PxeBcCacheDhcp6Packet (&Private->DhcpAck.Dhcp6.Packet.Ack, Ack);\r
+  if (EFI_ERROR (Status)) {\r
+    return Status;\r
+  }\r
 \r
   if (Verified) {\r
     //\r
@@ -771,6 +785,8 @@ PxeBcCopyDhcp6Ack (
     CopyMem (&Mode->DhcpAck.Dhcpv6, &Ack->Dhcp6, Ack->Length);\r
     Mode->DhcpAckReceived = TRUE;\r
   }\r
+\r
+  return EFI_SUCCESS;\r
 }\r
 \r
 \r
@@ -780,8 +796,11 @@ PxeBcCopyDhcp6Ack (
   @param[in]  Private               The pointer to PxeBc private data.\r
   @param[in]  OfferIndex            The received order of offer packets.\r
 \r
+  @retval     EFI_SUCCESS                Cache and parse the packet successfully.\r
+  @retval     EFI_BUFFER_TOO_SMALL       Cache buffer is not big enough to hold the packet.\r
+\r
 **/\r
-VOID\r
+EFI_STATUS\r
 PxeBcCopyDhcp6Proxy (\r
   IN PXEBC_PRIVATE_DATA     *Private,\r
   IN UINT32                 OfferIndex\r
@@ -789,6 +808,7 @@ PxeBcCopyDhcp6Proxy (
 {\r
   EFI_PXE_BASE_CODE_MODE    *Mode;\r
   EFI_DHCP6_PACKET          *Offer;\r
+  EFI_STATUS              Status;\r
 \r
   ASSERT (OfferIndex < Private->OfferNum);\r
   ASSERT (OfferIndex < PXEBC_OFFER_MAX_NUM);\r
@@ -799,7 +819,10 @@ PxeBcCopyDhcp6Proxy (
   //\r
   // Cache the proxy offer packet and parse it.\r
   //\r
-  PxeBcCacheDhcp6Packet (&Private->ProxyOffer.Dhcp6.Packet.Offer, Offer);\r
+  Status = PxeBcCacheDhcp6Packet (&Private->ProxyOffer.Dhcp6.Packet.Offer, Offer);\r
+  if (EFI_ERROR(Status)) {\r
+    return Status;\r
+  }\r
   PxeBcParseDhcp6Packet (&Private->ProxyOffer.Dhcp6);\r
 \r
   //\r
@@ -807,6 +830,8 @@ PxeBcCopyDhcp6Proxy (
   //\r
   CopyMem (&Mode->ProxyOffer.Dhcpv6, &Offer->Dhcp6, Offer->Length);\r
   Mode->ProxyOfferReceived = TRUE;\r
+\r
+  return EFI_SUCCESS;\r
 }\r
 \r
 /**\r
@@ -1121,8 +1146,10 @@ PxeBcRetryDhcp6Binl (
   @param[in]  Private               The pointer to PXEBC_PRIVATE_DATA.\r
   @param[in]  RcvdOffer             The pointer to the received offer packet.\r
 \r
+  @retval     EFI_SUCCESS      Cache and parse the packet successfully.\r
+  @retval     Others           Operation failed.\r
 **/\r
-VOID\r
+EFI_STATUS\r
 PxeBcCacheDhcp6Offer (\r
   IN PXEBC_PRIVATE_DATA     *Private,\r
   IN EFI_DHCP6_PACKET       *RcvdOffer\r
@@ -1131,6 +1158,7 @@ PxeBcCacheDhcp6Offer (
   PXEBC_DHCP6_PACKET_CACHE  *Cache6;\r
   EFI_DHCP6_PACKET          *Offer;\r
   PXEBC_OFFER_TYPE          OfferType;\r
+  EFI_STATUS                Status;\r
 \r
   Cache6 = &Private->OfferBuffer[Private->OfferNum].Dhcp6;\r
   Offer  = &Cache6->Packet.Offer;\r
@@ -1138,13 +1166,16 @@ PxeBcCacheDhcp6Offer (
   //\r
   // Cache the content of DHCPv6 packet firstly.\r
   //\r
-  PxeBcCacheDhcp6Packet (Offer, RcvdOffer);\r
+  Status = PxeBcCacheDhcp6Packet (Offer, RcvdOffer);\r
+  if (EFI_ERROR (Status)) {\r
+    return Status;\r
+  }\r
 \r
   //\r
   // Validate the DHCPv6 packet, and parse the options and offer type.\r
   //\r
   if (EFI_ERROR (PxeBcParseDhcp6Packet (Cache6))) {\r
-    return ;\r
+    return EFI_ABORTED;\r
   }\r
 \r
   //\r
@@ -1173,7 +1204,7 @@ PxeBcCacheDhcp6Offer (
       Private->OfferIndex[OfferType][0] = Private->OfferNum;\r
       Private->OfferCount[OfferType]    = 1;\r
     } else {\r
-      return;\r
+      return EFI_ABORTED;\r
     }\r
   } else {\r
     //\r
@@ -1184,6 +1215,8 @@ PxeBcCacheDhcp6Offer (
   }\r
 \r
   Private->OfferNum++;\r
+\r
+  return EFI_SUCCESS;\r
 }\r
 \r
 \r
@@ -1301,6 +1334,7 @@ PxeBcSelectDhcp6Offer (
   @retval     EFI_SUCCESS           Handled the DHCPv6 offer packet successfully.\r
   @retval     EFI_NO_RESPONSE       No response to the following request packet.\r
   @retval     EFI_OUT_OF_RESOURCES  Failed to allocate resources.\r
+  @retval     EFI_BUFFER_TOO_SMALL  Can't cache the offer pacet.\r
 \r
 **/\r
 EFI_STATUS\r
@@ -1410,7 +1444,7 @@ PxeBcHandleDhcp6Offer (
         //\r
         // Success to try to request by a ProxyPxe10 or ProxyWfm11a offer, copy and parse it.\r
         //\r
-        PxeBcCopyDhcp6Proxy (Private, ProxyIndex);\r
+        Status = PxeBcCopyDhcp6Proxy (Private, ProxyIndex);\r
       }\r
     } else {\r
       //\r
@@ -1424,7 +1458,7 @@ PxeBcHandleDhcp6Offer (
     //\r
     // All PXE boot information is ready by now.\r
     //\r
-    PxeBcCopyDhcp6Ack (Private, &Private->DhcpAck.Dhcp6.Packet.Ack, TRUE);\r
+    Status = PxeBcCopyDhcp6Ack (Private, &Private->DhcpAck.Dhcp6.Packet.Ack, TRUE);\r
     Private->PxeBc.Mode->DhcpDiscoverValid = TRUE;\r
   }\r
 \r
@@ -1997,19 +2031,15 @@ PxeBcDhcp6CallBack (
     break;\r
 \r
   case Dhcp6RcvdReply:\r
-    if (Packet->Length > PXEBC_DHCP6_PACKET_MAX_SIZE) {\r
-      //\r
-      // Abort the DHCP if the Peply packet exceeds the maximum length.\r
-      //\r
-         Status = EFI_ABORTED;\r
-      break;\r
-    }\r
     //\r
     // Cache the dhcp ack to Private->Dhcp6Ack, but it's not the final ack in mode data\r
     // without verification.\r
     //\r
     ASSERT (Private->SelectIndex != 0);\r
-    PxeBcCopyDhcp6Ack (Private, Packet, FALSE);\r
+    Status = PxeBcCopyDhcp6Ack (Private, Packet, FALSE);\r
+    if (EFI_ERROR (Status)) {\r
+      Status = EFI_ABORTED;\r
+    }\r
     break;\r
 \r
   default:\r