log: handle integer overflow in timestamps

diff --git a/sha1_name.c b/sha1_name.c
index 95003c77ea9a0ee240d60bc7958bb48245b14ad4..c50630a3ea793e0cfd2510b8813129a1685428f4 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1137,7 +1137,8 @@ int get_sha1_blob(const char *name, unsigned char *sha1)
 static void diagnose_invalid_sha1_path(const char *prefix,
                                       const char *filename,
                                       const unsigned char *tree_sha1,
-                                      const char *object_name)
+                                      const char *object_name,
+                                      int object_name_len)
 {
        struct stat st;
        unsigned char sha1[20];
@@ -1147,8 +1148,8 @@ static void diagnose_invalid_sha1_path(const char *prefix,
                prefix = "";
 
        if (!lstat(filename, &st))
-               die("Path '%s' exists on disk, but not in '%s'.",
-                   filename, object_name);
+               die("Path '%s' exists on disk, but not in '%.*s'.",
+                   filename, object_name_len, object_name);
        if (errno == ENOENT || errno == ENOTDIR) {
                char *fullname = xmalloc(strlen(filename)
                                             + strlen(prefix) + 1);
@@ -1158,16 +1159,16 @@ static void diagnose_invalid_sha1_path(const char *prefix,
                if (!get_tree_entry(tree_sha1, fullname,
                                    sha1, &mode)) {
                        die("Path '%s' exists, but not '%s'.\n"
-                           "Did you mean '%s:%s' aka '%s:./%s'?",
+                           "Did you mean '%.*s:%s' aka '%.*s:./%s'?",
                            fullname,
                            filename,
-                           object_name,
+                           object_name_len, object_name,
                            fullname,
-                           object_name,
+                           object_name_len, object_name,
                            filename);
                }
-               die("Path '%s' does not exist in '%s'",
-                   filename, object_name);
+               die("Path '%s' does not exist in '%.*s'",
+                   filename, object_name_len, object_name);
        }
 }
 
@@ -1332,13 +1333,8 @@ static int get_sha1_with_context_1(const char *name,
        }
        if (*cp == ':') {
                unsigned char tree_sha1[20];
-               char *object_name = NULL;
-               if (only_to_die) {
-                       object_name = xmalloc(cp-name+1);
-                       strncpy(object_name, name, cp-name);
-                       object_name[cp-name] = '\0';
-               }
-               if (!get_sha1_1(name, cp-name, tree_sha1, GET_SHA1_TREEISH)) {
+               int len = cp - name;
+               if (!get_sha1_1(name, len, tree_sha1, GET_SHA1_TREEISH)) {
                        const char *filename = cp+1;
                        char *new_filename = NULL;
 
@@ -1348,8 +1344,8 @@ static int get_sha1_with_context_1(const char *name,
                        ret = get_tree_entry(tree_sha1, filename, sha1, &oc->mode);
                        if (ret && only_to_die) {
                                diagnose_invalid_sha1_path(prefix, filename,
-                                                          tree_sha1, object_name);
-                               free(object_name);
+                                                          tree_sha1,
+                                                          name, len);
                        }
                        hashcpy(oc->tree, tree_sha1);
                        strncpy(oc->path, filename,
@@ -1360,7 +1356,7 @@ static int get_sha1_with_context_1(const char *name,
                        return ret;
                } else {
                        if (only_to_die)
-                               die("Invalid object name '%s'.", object_name);
+                               die("Invalid object name '%.*s'.", len, name);
                }
        }
        return ret;