summaryrefslogtreecommitdiff
path: root/fsck.c
diff options
context:
space:
mode:
Diffstat (limited to 'fsck.c')
-rw-r--r--fsck.c56
1 files changed, 26 insertions, 30 deletions
diff --git a/fsck.c b/fsck.c
index 99c0497674..abed62bac7 100644
--- a/fsck.c
+++ b/fsck.c
@@ -165,18 +165,12 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func)
sha1 = tree_entry_extract(&desc, &name, &mode);
- if (is_null_sha1(sha1))
- has_null_sha1 = 1;
- if (strchr(name, '/'))
- has_full_path = 1;
- if (!*name)
- has_empty_name = 1;
- if (!strcmp(name, "."))
- has_dot = 1;
- if (!strcmp(name, ".."))
- has_dotdot = 1;
- if (!strcmp(name, ".git"))
- has_dotgit = 1;
+ has_null_sha1 |= is_null_sha1(sha1);
+ has_full_path |= !!strchr(name, '/');
+ has_empty_name |= !*name;
+ has_dot |= !strcmp(name, ".");
+ has_dotdot |= !strcmp(name, "..");
+ has_dotgit |= !strcmp(name, ".git");
has_zero_pad |= *(char *)desc.buffer == '0';
update_tree_entry(&desc);
@@ -243,8 +237,10 @@ static int fsck_tree(struct tree *item, int strict, fsck_error error_func)
return retval;
}
-static int fsck_ident(char **ident, struct object *obj, fsck_error error_func)
+static int fsck_ident(const char **ident, struct object *obj, fsck_error error_func)
{
+ char *end;
+
if (**ident == '<')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - missing space before email");
*ident += strcspn(*ident, "<>\n");
@@ -264,10 +260,11 @@ static int fsck_ident(char **ident, struct object *obj, fsck_error error_func)
(*ident)++;
if (**ident == '0' && (*ident)[1] != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - zero-padded date");
- *ident += strspn(*ident, "0123456789");
- if (**ident != ' ')
+ if (date_overflows(strtoul(*ident, &end, 10)))
+ return error_func(obj, FSCK_ERROR, "invalid author/committer line - date causes integer overflow");
+ if (end == *ident || *end != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - bad date");
- (*ident)++;
+ *ident = end + 1;
if ((**ident != '+' && **ident != '-') ||
!isdigit((*ident)[1]) ||
!isdigit((*ident)[2]) ||
@@ -281,24 +278,23 @@ static int fsck_ident(char **ident, struct object *obj, fsck_error error_func)
static int fsck_commit(struct commit *commit, fsck_error error_func)
{
- char *buffer = commit->buffer;
+ const char *buffer = commit->buffer, *tmp;
unsigned char tree_sha1[20], sha1[20];
struct commit_graft *graft;
int parents = 0;
int err;
- if (commit->date == ULONG_MAX)
- return error_func(&commit->object, FSCK_ERROR, "invalid author/committer line");
-
- if (memcmp(buffer, "tree ", 5))
+ buffer = skip_prefix(buffer, "tree ");
+ if (!buffer)
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'tree' line");
- if (get_sha1_hex(buffer+5, tree_sha1) || buffer[45] != '\n')
+ if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n')
return error_func(&commit->object, FSCK_ERROR, "invalid 'tree' line format - bad sha1");
- buffer += 46;
- while (!memcmp(buffer, "parent ", 7)) {
- if (get_sha1_hex(buffer+7, sha1) || buffer[47] != '\n')
+ buffer += 41;
+ while ((tmp = skip_prefix(buffer, "parent "))) {
+ buffer = tmp;
+ if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n')
return error_func(&commit->object, FSCK_ERROR, "invalid 'parent' line format - bad sha1");
- buffer += 48;
+ buffer += 41;
parents++;
}
graft = lookup_commit_graft(commit->object.sha1);
@@ -322,15 +318,15 @@ static int fsck_commit(struct commit *commit, fsck_error error_func)
if (p || parents)
return error_func(&commit->object, FSCK_ERROR, "parent objects missing");
}
- if (memcmp(buffer, "author ", 7))
+ buffer = skip_prefix(buffer, "author ");
+ if (!buffer)
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'author' line");
- buffer += 7;
err = fsck_ident(&buffer, &commit->object, error_func);
if (err)
return err;
- if (memcmp(buffer, "committer ", strlen("committer ")))
+ buffer = skip_prefix(buffer, "committer ");
+ if (!buffer)
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'committer' line");
- buffer += strlen("committer ");
err = fsck_ident(&buffer, &commit->object, error_func);
if (err)
return err;