From: Aaron Merey <amerey@redhat.com>
Date: Mon, 18 Nov 2024 23:35:38 +0000 (-0500)
Subject: srcfiles.cxx: Prevent fd and entry leak
X-Git-Tag: elfutils-0.193~71
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8a0a7cf93eeec6f5873529145088b61b259112cc;p=thirdparty%2Felfutils.git

srcfiles.cxx: Prevent fd and entry leak

Make sure to free fd and the archive entry if an error is encountered
while adding source files to the archive.

Signed-off-by: Aaron Merey <amerey@redhat.com>
---

diff --git a/src/srcfiles.cxx b/src/srcfiles.cxx
index c466b307..c36a7034 100644
--- a/src/srcfiles.cxx
+++ b/src/srcfiles.cxx
@@ -312,7 +312,6 @@ void zip_files()
   struct stat st;
   char buff[BUFFER_SIZE];
   int len;
-  int fd;
   #ifdef ENABLE_LIBDEBUGINFOD
   /* Initialize a debuginfod client.  */
   static unique_ptr <debuginfod_client, void (*)(debuginfod_client*)>
@@ -325,8 +324,10 @@ void zip_files()
   int missing_files = 0;
   for (const auto &pair : debug_sourcefiles)
   {
-    fd = -1;
+    int fd = -1;
     const std::string &file_path = pair.first;
+    struct archive_entry *entry = NULL;
+    string entry_name;
 
     /* Attempt to query debuginfod client to fetch source files.  */
     #ifdef ENABLE_LIBDEBUGINFOD
@@ -352,9 +353,9 @@ void zip_files()
 
     if (!no_backup)
     #endif /* ENABLE_LIBDEBUGINFOD */
-      /* Files could not be located using debuginfod, search locally */
-      if (fd < 0)
-        fd = open(file_path.c_str(), O_RDONLY);
+    /* Files could not be located using debuginfod, search locally */
+    if (fd < 0)
+      fd = open(file_path.c_str(), O_RDONLY);
     if (fd < 0)
     {
       if (verbose)
@@ -371,11 +372,11 @@ void zip_files()
       missing_files++;
       if (verbose)
         cerr << "Error: Failed to get file status for " << file_path << ": " << strerror(errno) << endl;
-      continue;
+      goto next;
     }
-    struct archive_entry *entry = archive_entry_new();
+    entry = archive_entry_new();
     /* Removing first "/"" to make the path "relative" before zipping, otherwise warnings are raised when unzipping.  */
-    string entry_name = file_path.substr(file_path.find_first_of('/') + 1);
+    entry_name = file_path.substr(file_path.find_first_of('/') + 1);
     archive_entry_set_pathname(entry, entry_name.c_str());
     archive_entry_copy_stat(entry, &st);
     if (archive_write_header(a, entry) != ARCHIVE_OK)
@@ -385,7 +386,7 @@ void zip_files()
       missing_files++;
       if (verbose)
         cerr << "Error: failed to write header for " << file_path << ": " << archive_error_string(a) << endl;
-      continue;
+      goto next;
     }
 
     /* Write the file to the zip.  */
@@ -397,7 +398,7 @@ void zip_files()
       missing_files++;
       if (verbose)
         cerr << "Error: Failed to open file: " << file_path << ": " << strerror(errno) <<endl;
-      continue;
+      goto next;
     }
     while (len > 0)
     {
@@ -409,8 +410,12 @@ void zip_files()
       }
       len = read(fd, buff, sizeof(buff));
     }
-    close(fd);
-    archive_entry_free(entry);
+
+next:
+    if (fd >= 0)
+      close(fd);
+    if (entry != NULL)
+      archive_entry_free(entry);
   }
   if (verbose && missing_files > 0 )
     cerr << missing_files << " file(s) listed above could not be found.  " << endl;