Display uncompressed file size; debug-mode: show possible checksum of payload

diff --git a/installshield_main.c b/installshield_main.c
index ed458b3..9e95071 100644 (file)
--- a/installshield_main.c
+++ b/installshield_main.c
@@ -80,7 +80,7 @@ headers_decode(int z_fd)
                                printf("File entries: %d ( %08x bytes @ 0x%08x)\n", header->files_entries, header->files_bytes, header->files_offset);
 
                                for (int i = 0; i < header->files_entries; ++i) {
-                                       printf(" Entry %4d Size %06x @ %08x payload size %06x @ %08x", i, q->entry_bytes, header->files_offset +(uint32_t)((void *)q - (void *)fileent), q->payload_bytes, q->payload_offset);
+                                       printf(" Entry %4d uses %06x bytes @ %08x. file-size %08x (payload %08x @ %08x)", i, q->entry_bytes, header->files_offset +(uint32_t)((void *)q - (void *)fileent), q->file_bytes, q->payload_bytes, q->payload_offset);
 
                                        if (debug) {
                                                printf(" next @ %08x", q->payload_offset + q->payload_bytes);
@@ -93,7 +93,7 @@ headers_decode(int z_fd)
                                        char *dir_name = strdup(dirents[q->dir_index].entry->name);
                                        for (char *p = dir_name; *p; ++p)
                                                if (*p == '\\') *p = '/';
-                                       printf("Parsing '%s' (%d bytes)\n", dir_name, strlen(dir_name));
+                                        if (debug) printf("Parsing '%s' (%ld bytes)\n", dir_name, strlen(dir_name));
 
                                        int dir_fd = AT_FDCWD;
                                        int dir_fd_last = dir_fd;
@@ -108,7 +108,7 @@ headers_decode(int z_fd)
                                                                        char temp = *sep;
                                                                        *sep = 0;
                                                                        if (strlen(component) > 0) {
-                                                                               if (debug) printf("Component: '%s' %d bytes @ %p\n", component, strlen(component), component);
+                                                                               if (debug) printf("Component: '%s' %ld bytes @ %p\n", component, strlen(component), component);
                                                                                int ret = mkdirat(dir_fd, component, 0755);
                                                                                if (ret == 0 || (ret == -1 && errno == EEXIST)) {
                                                                                        if (debug)
@@ -157,6 +157,13 @@ headers_decode(int z_fd)
                                                                if ((pay_fd = openat(dir_fd, z_filename, O_WRONLY | O_CREAT | O_TRUNC, 0644))) {
                                                                        ssize_t z_qty, pay_qty;
                                                                        if ((z_qty = read(z_fd, buffer, q->payload_bytes)) == q->payload_bytes) {
+                                                                               if (debug) {
+                                                                                       unsigned int checksum = 0x0;
+                                                                                       for (int i = 0; i < q->payload_bytes / sizeof(unsigned int); ++i) {
+                                                                                               checksum ^= ((unsigned int *)buffer)[i];
+                                                                                       }
+                                                                                       printf("Checksum: %08x\n", checksum);
+                                                                               }
                                                                                if ((pay_qty = write(pay_fd, buffer, q->payload_bytes)) != q->payload_bytes)
                                                                                        fprintf(stderr, "Error: whilst writing payload expected %d bytes but wrote %ld\n", q->payload_bytes, pay_qty);
                                                                        } else