klockwork: Fix libva klocwork scaning issues

Fix NULL pointer dereference risk issues and uninitialized variables

Signed-off-by: Elaine Wang <elaine.wang@intel.com>

Change-Id: I839a9def7b08c41c1f075e4cd1cc06e8bb0c8c9e

3 files changed, 26 insertions, 21 deletions

diff --git a/va/va.c b/va/va.c
index 45ff5f2..e331f74 100644
--- a/va/va.c
+++ b/va/va.c
@@ -86,10 +86,9 @@ int va_parseConfig(char *env, char *env_value)
         fclose(fp);
 
     /* no setting in config file, use env setting */
-    if (getenv(env)) {
-        if (env_value)
-            strncpy(env_value, getenv(env), 1024);
-
+    value = getenv(env);
+    if (value) {
+        strncpy(env_value, value, 1024);
         return 0;
     }
     
@@ -214,6 +213,12 @@ static VAStatus va_openDriver(VADisplay dpy, char *driver_name)
         char *driver_path = (char *) malloc( strlen(driver_dir) +
                                              strlen(driver_name) +
                                              strlen(DRIVER_EXTENSION) + 2 );
+        if (!driver_path) {
+            va_errorMessage("%s L%d Out of memory!n",
+                                __FUNCTION__, __LINE__);
+            return VA_STATUS_ERROR_ALLOCATION_FAILED;
+        }
+
         strncpy( driver_path, driver_dir, strlen(driver_dir) + 1);
         strncat( driver_path, "/", strlen("/") );
         strncat( driver_path, driver_name, strlen(driver_name) );
diff --git a/va/va_fool.c b/va/va_fool.c
index 807307e..3c7161b 100644
--- a/va/va_fool.c
+++ b/va/va_fool.c
@@ -32,6 +32,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 #include <string.h>
 #include <dlfcn.h>
 #include <unistd.h>
@@ -50,7 +51,7 @@
  * . if set, decode does nothing
  * LIBVA_FOOL_ENCODE=<framename>:
  * . if set, encode does nothing, but fill in the coded buffer from the content of files with
- *   name framename.0,framename.1,framename.2, ..., framename.N, framename.N,framename.N,...
+ *   name framename.0,framename.1,..., framename.N, framename.0,..., framename.N,...repeatly
  * LIBVA_FOOL_JPEG=<framename>:fill the content of filename to codedbuf for jpeg encoding
  * LIBVA_FOOL_POSTP:
  * . if set, do nothing for vaPutSurface
@@ -256,31 +257,30 @@ VAStatus va_FoolBufferInfo(
 static int va_FoolFillCodedBufEnc(int idx)
 {
     char file_name[1024];
-    struct stat file_stat;
+    struct stat file_stat = {0};
     VACodedBufferSegment *codedbuf;
     int i, fd = -1;
 
     /* try file_name.file_count, if fail, try file_name.file_count-- */
     for (i=0; i<=1; i++) {
-        sprintf(file_name, "%s.%d",
-                fool_context[idx].fn_enc,
-                fool_context[idx].file_count);
+        snprintf(file_name, 1024, "%s.%d",
+                 fool_context[idx].fn_enc,
+                 fool_context[idx].file_count);
 
         if ((fd = open(file_name, O_RDONLY)) != -1) {
             fstat(fd, &file_stat);
             fool_context[idx].file_count++; /* open next file */
             break;
-        }
-        
-        fool_context[idx].file_count--; /* fall back to previous file */
-        if (fool_context[idx].file_count < 0)
+        } else /* fall back to the first file file */
             fool_context[idx].file_count = 0;
     }
     if (fd != -1) {
         fool_context[idx].segbuf_enc = realloc(fool_context[idx].segbuf_enc, file_stat.st_size);
         read(fd, fool_context[idx].segbuf_enc, file_stat.st_size);
         close(fd);
-    }
+    } else
+        va_errorMessage("Open file %s failed:%s\n", file_name, strerror(errno));
+
     codedbuf = (VACodedBufferSegment *)fool_context[idx].fool_buf[VAEncCodedBufferType];
     codedbuf->size = file_stat.st_size;
     codedbuf->bit_offset = 0;
@@ -295,18 +295,18 @@ static int va_FoolFillCodedBufEnc(int idx)
 
 static int va_FoolFillCodedBufJPG(int idx)
 {
-    struct stat file_stat;
+    struct stat file_stat = {0};
     VACodedBufferSegment *codedbuf;
     int i, fd = -1;
 
-    if ((fd = open(fool_context[idx].fn_jpg, O_RDONLY)) != -1)
+    if ((fd = open(fool_context[idx].fn_jpg, O_RDONLY)) != -1) {
         fstat(fd, &file_stat);
-        
-    if (fd != -1) {
         fool_context[idx].segbuf_jpg = realloc(fool_context[idx].segbuf_jpg, file_stat.st_size);
         read(fd, fool_context[idx].segbuf_jpg, file_stat.st_size);
         close(fd);
-    }
+    } else
+        va_errorMessage("Open file %s failed:%s\n", fool_context[idx].fn_jpg, strerror(errno));
+
     codedbuf = (VACodedBufferSegment *)fool_context[idx].fool_buf[VAEncCodedBufferType];
     codedbuf->size = file_stat.st_size;
     codedbuf->bit_offset = 0;
diff --git a/va/va_trace.c b/va/va_trace.c
index e6fd2b2..45856d7 100644
--- a/va/va_trace.c
+++ b/va/va_trace.c
@@ -1054,12 +1054,12 @@ static void va_TraceVASliceParameterBufferH264(
 
     if (p->slice_type == 0 || p->slice_type == 1) {
         va_TraceMsg(idx, "\tRefPicList0 =");
-        for (i = 0; i < p->num_ref_idx_l0_active_minus1 + 1; i++) {
+        for (i = 0; (i < p->num_ref_idx_l0_active_minus1 + 1 && i < 32); i++) {
             va_TraceMsg(idx, "%d-%d-0x%08x-%d\n", p->RefPicList0[i].TopFieldOrderCnt, p->RefPicList0[i].BottomFieldOrderCnt, p->RefPicList0[i].picture_id, p->RefPicList0[i].frame_idx);
         }
         if (p->slice_type == 1) {
             va_TraceMsg(idx, "\tRefPicList1 =");
-            for (i = 0; i < p->num_ref_idx_l1_active_minus1 + 1; i++)
+            for (i = 0; (i < p->num_ref_idx_l1_active_minus1 + 1 && i < 32); i++)
             {
                 va_TraceMsg(idx, "%d-%d-0x%08x-%d\n", p->RefPicList1[i].TopFieldOrderCnt, p->RefPicList1[i].BottomFieldOrderCnt, p->RefPicList1[i].picture_id, p->RefPicList1[i].frame_idx);
             }