Fix memory leaks.

git-svn-id: http://opkg.googlecode.com/svn/trunk@233 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

diff --git a/libbb/unarchive.c b/libbb/unarchive.c
index 782efd0a4a2065ab3ec780287b452d773977c4bb..53fa89980b48d6f268ad591d3a667c43ceede247 100644 (file)
--- a/libbb/unarchive.c
+++ b/libbb/unarchive.c
@@ -141,7 +141,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                        fread(buffer, 1, file_entry->size, src_stream);
                        buffer[file_entry->size] = '\0';
                        archive_offset += file_entry->size;
-                       return(buffer);
+                       goto cleanup;
                }
        }
        else if (function & extract_all_to_fs) {
@@ -158,7 +158,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                                        error_msg("%s not created: newer or same age file exists", file_entry->name);
                                }
                                seek_sub_file(src_stream, file_entry->size);
-                               return (NULL);
+                               goto cleanup;
                        }
                }
                if (function & extract_create_leading_dirs) { /* Create leading directories with default umask */
@@ -184,7 +184,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                                } else {
                                        if ((dst_stream = wfopen(full_name, "w")) == NULL) {
                                                seek_sub_file(src_stream, file_entry->size);
-                                               return NULL;
+                                               goto cleanup;
                                        }
                                        archive_offset += file_entry->size;
                                        copy_file_chunk(src_stream, dst_stream, file_entry->size);                      
@@ -205,7 +205,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                                        if ((function & extract_quiet) != extract_quiet) {
                                                perror_msg("Cannot create symlink from %s to '%s'", file_entry->name, file_entry->link_name);
                                        }
-                                       return NULL;
+                                       goto cleanup;
                                }
                                break;
                        case S_IFSOCK:
@@ -216,7 +216,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                                        if ((function & extract_quiet) != extract_quiet) {
                                                perror_msg("Cannot create node %s", file_entry->name);
                                        }
-                                       return NULL;
+                                       goto cleanup;
                                }
                                break;
                          default:
@@ -259,11 +259,12 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
                fprintf(out_stream, "%s\n", file_entry->name);
        }
 
+cleanup:
        free(full_name);
         if ( full_link_name )
            free(full_link_name);
 
-       return(NULL); /* Maybe we should say if failed */
+       return(buffer); /* Maybe we should say if failed */
 }
 #endif
 
@@ -750,13 +751,13 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                ared_file = xstrdup("data.tar.gz");
        } else {
                 fprintf(stderr, "no file specified to extract -- extract_function=%x\n", extract_function);
-                return NULL;
+               goto cleanup;
         }
 
        /* open the debian package to be worked on */
        deb_stream = wfopen(package_filename, "r");
        if (deb_stream == NULL) {
-               return(NULL);
+               goto cleanup;
        }
        /* set the buffer size */
        setvbuf(deb_stream, NULL, _IOFBF, 0x8000);
@@ -772,7 +773,7 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                                /* open a stream of decompressed data */
                                uncompressed_stream = gz_open(deb_stream, &gunzip_pid);
                                if (uncompressed_stream == NULL) {
-                                       return(NULL);
+                                       goto cleanup;
                                }
 
                                archive_offset = 0;
@@ -786,7 +787,7 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                fclose(deb_stream);
                fclose(uncompressed_stream);
                free(ared_file);
-               return(output_buffer);
+               goto cleanup;
        } else if (strncmp(ar_magic, "\037\213", 2) == 0) {
                /* it's a gz file, let's assume it's an opkg */
                int unzipped_opkg_pid;
@@ -796,7 +797,7 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                fseek(deb_stream, 0, SEEK_SET);
                unzipped_opkg_stream = gz_open(deb_stream, &unzipped_opkg_pid);
                if (unzipped_opkg_stream == NULL) {
-                       return(NULL);
+                       goto cleanup;
                }
                
                 /*fprintf(stderr, __FUNCTION__ ": processing opkg %s -- ared_file=%s\n", package_filename, ared_file);*/
@@ -809,7 +810,7 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                                /* open a stream of decompressed data */
                                uncompressed_stream = gz_open(unzipped_opkg_stream, &gunzip_pid);
                                if (uncompressed_stream == NULL) {
-                                       return(NULL);
+                                       goto cleanup;
                                }
                                archive_offset = 0;
                                 /*fprintf(stderr, __FUNCTION__ ":%d: here -- found file\n", __LINE__);*/
@@ -834,10 +835,17 @@ char *deb_extract(const char *package_filename, FILE *out_stream,
                fclose(deb_stream);
                free(ared_file);
                 /*fprintf(stderr, __FUNCTION__ ":%d: done\n", __LINE__);*/
-               return output_buffer; 
+               goto cleanup;
        } else {
                error_msg_and_die("invalid magic");
        }
 
+cleanup:
+       if (file_list) {
+               free(file_list[0]);
+               free(file_list);
+       }
+
+       return output_buffer;
 }
 #endif