[reactos] 01/01: [HAL] Fix more bugs in HalpDebugPciDumpBus (#1939)

[Stanislav Motylkov]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=07706eca3a4d94f5902f7…

commit 07706eca3a4d94f5902f71e38212f936ffcd724d
Author:     Stanislav Motylkov <x86corez(a)gmail.com>
AuthorDate: Sat Sep 28 19:30:56 2019 +0300
Commit:     Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito(a)reactos.org>
CommitDate: Sat Sep 28 18:30:56 2019 +0200

    [HAL] Fix more bugs in HalpDebugPciDumpBus (#1939)
    
    - Don't match device id outside current vendor id list.
    - Don't match subsystem id outside current device id list.
    - Refactor some magic constants.
    
    Addendum to 894635b.
---
 hal/halx86/legacy/bussupp.c | 36 +++++++++++++++++++++++++++++-------
 1 file changed, 29 insertions(+), 7 deletions(-)

diff --git a/hal/halx86/legacy/bussupp.c b/hal/halx86/legacy/bussupp.c
index aad25838f55..ba44b4cec91 100644
--- a/hal/halx86/legacy/bussupp.c
+++ b/hal/halx86/legacy/bussupp.c
@@ -809,10 +809,10 @@ HalpDebugPciDumpBus(IN ULONG i,
                     IN ULONG k,
                     IN PPCI_COMMON_CONFIG PciData)
 {
-    PCHAR p, ClassName, ClassEnd, SubClassName, VendorName, ProductName, SubVendorName;
+    PCHAR p, ClassName, Boundary, SubClassName, VendorName, ProductName, SubVendorName;
     ULONG Length;
     CHAR LookupString[16] = "";
-    CHAR bSubClassName[64] = "";
+    CHAR bSubClassName[64] = "Unknown";
     CHAR bVendorName[64] = "";
     CHAR bProductName[128] = "Unknown device";
     CHAR bSubVendorName[128] = "Unknown";
@@ -825,10 +825,10 @@ HalpDebugPciDumpBus(IN ULONG i,
     {
         /* Isolate the subclass name */
         ClassName += strlen("C 00  ");
-        ClassEnd = strstr(ClassName, "\nC ");
+        Boundary = strstr(ClassName, "\nC ");
         sprintf(LookupString, "\n\t%02x  ", PciData->SubClass);
         SubClassName = strstr(ClassName, LookupString);
-        if (ClassEnd && SubClassName > ClassEnd)
+        if (Boundary && SubClassName > Boundary)
         {
             SubClassName = NULL;
         }
@@ -854,25 +854,43 @@ HalpDebugPciDumpBus(IN ULONG i,
     if (VendorName)
     {
         /* Copy the vendor name into our buffer */
-        VendorName += 8;
+        VendorName += strlen("\r\n0000  ");
         p = strpbrk(VendorName, "\r\n");
         Length = p - VendorName;
         if (Length >= sizeof(bVendorName)) Length = sizeof(bVendorName) - 1;
         strncpy(bVendorName, VendorName, Length);
         bVendorName[Length] = '\0';
+        p += strlen("\r\n");
+        while (*p == '\t' || *p == '#')
+        {
+            p = strpbrk(p, "\r\n");
+            p += strlen("\r\n");
+        }
+        Boundary = p;
 
         /* Isolate the product name */
         sprintf(LookupString, "\t%04x  ", PciData->DeviceID);
         ProductName = strstr(VendorName, LookupString);
+        if (Boundary && ProductName >= Boundary)
+        {
+            ProductName = NULL;
+        }
         if (ProductName)
         {
             /* Copy the product name into our buffer */
-            ProductName += 7;
+            ProductName += strlen("\t0000  ");
             p = strpbrk(ProductName, "\r\n");
             Length = p - ProductName;
             if (Length >= sizeof(bProductName)) Length = sizeof(bProductName) - 1;
             strncpy(bProductName, ProductName, Length);
             bProductName[Length] = '\0';
+            p += strlen("\r\n");
+            while ((*p == '\t' && *(p + 1) == '\t') || *p ==
'#')
+            {
+                p = strpbrk(p, "\r\n");
+                p += strlen("\r\n");
+            }
+            Boundary = p;
 
             /* Isolate the subvendor and subsystem name */
             sprintf(LookupString,
@@ -880,10 +898,14 @@ HalpDebugPciDumpBus(IN ULONG i,
                     PciData->u.type0.SubVendorID,
                     PciData->u.type0.SubSystemID);
             SubVendorName = strstr(ProductName, LookupString);
+            if (Boundary && SubVendorName >= Boundary)
+            {
+                SubVendorName = NULL;
+            }
             if (SubVendorName)
             {
                 /* Copy the subvendor name into our buffer */
-                SubVendorName += 13;
+                SubVendorName += strlen("\t\t0000 0000  ");
                 p = strpbrk(SubVendorName, "\r\n");
                 Length = p - SubVendorName;
                 if (Length >= sizeof(bSubVendorName)) Length = sizeof(bSubVendorName)
- 1;