diff options
| -rw-r--r-- | fsck.c | 86 |
1 files changed, 85 insertions, 1 deletions
@@ -6,6 +6,7 @@ #include "commit.h" #include "tag.h" #include "fsck.h" +#include "refs.h" static int fsck_walk_tree(struct tree *tree, fsck_walk_func walk, void *data) { @@ -355,6 +356,88 @@ static int fsck_commit(struct commit *commit, const char *data, return ret; } +static int fsck_tag_buffer(struct tag *tag, const char *data, + unsigned long size, fsck_error error_func) +{ + unsigned char sha1[20]; + int ret = 0; + const char *buffer; + char *to_free = NULL, *eol; + struct strbuf sb = STRBUF_INIT; + + if (data) + buffer = data; + else { + enum object_type type; + + buffer = to_free = + read_sha1_file(tag->object.sha1, &type, &size); + if (!buffer) + return error_func(&tag->object, FSCK_ERROR, + "cannot read tag object"); + + if (type != OBJ_TAG) { + ret = error_func(&tag->object, FSCK_ERROR, + "expected tag got %s", + typename(type)); + goto done; + } + } + + if (require_end_of_header(buffer, size, &tag->object, error_func)) + goto done; + + if (!skip_prefix(buffer, "object ", &buffer)) { + ret = error_func(&tag->object, FSCK_ERROR, "invalid format - expected 'object' line"); + goto done; + } + if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { + ret = error_func(&tag->object, FSCK_ERROR, "invalid 'object' line format - bad sha1"); + goto done; + } + buffer += 41; + + if (!skip_prefix(buffer, "type ", &buffer)) { + ret = error_func(&tag->object, FSCK_ERROR, "invalid format - expected 'type' line"); + goto done; + } + eol = strchr(buffer, '\n'); + if (!eol) { + ret = error_func(&tag->object, FSCK_ERROR, "invalid format - unexpected end after 'type' line"); + goto done; + } + if (type_from_string_gently(buffer, eol - buffer, 1) < 0) + ret = error_func(&tag->object, FSCK_ERROR, "invalid 'type' value"); + if (ret) + goto done; + buffer = eol + 1; + + if (!skip_prefix(buffer, "tag ", &buffer)) { + ret = error_func(&tag->object, FSCK_ERROR, "invalid format - expected 'tag' line"); + goto done; + } + eol = strchr(buffer, '\n'); + if (!eol) { + ret = error_func(&tag->object, FSCK_ERROR, "invalid format - unexpected end after 'type' line"); + goto done; + } + strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); + if (check_refname_format(sb.buf, 0)) + error_func(&tag->object, FSCK_WARN, "invalid 'tag' name: %s", buffer); + buffer = eol + 1; + + if (!skip_prefix(buffer, "tagger ", &buffer)) + /* early tags do not contain 'tagger' lines; warn only */ + error_func(&tag->object, FSCK_WARN, "invalid format - expected 'tagger' line"); + else + ret = fsck_ident(&buffer, &tag->object, error_func); + +done: + strbuf_release(&sb); + free(to_free); + return ret; +} + static int fsck_tag(struct tag *tag, const char *data, unsigned long size, fsck_error error_func) { @@ -362,7 +445,8 @@ static int fsck_tag(struct tag *tag, const char *data, if (!tagged) return error_func(&tag->object, FSCK_ERROR, "could not load tagged object"); - return 0; + + return fsck_tag_buffer(tag, data, size, error_func); } int fsck_object(struct object *obj, void *data, unsigned long size, |