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-rw-r--r--fast-import.c158
1 files changed, 135 insertions, 23 deletions
diff --git a/fast-import.c b/fast-import.c
index 606d44278d..b8b65a801c 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -217,6 +217,7 @@ static uintmax_t next_mark;
static struct strbuf new_data = STRBUF_INIT;
static int seen_data_command;
static int require_explicit_termination;
+static int allow_unsafe_features;
/* Signal handling */
static volatile sig_atomic_t checkpoint_requested;
@@ -1682,6 +1683,12 @@ static void dump_marks(void)
if (!export_marks_file || (import_marks_file && !import_marks_file_done))
return;
+ if (safe_create_leading_directories_const(export_marks_file)) {
+ failure |= error_errno("unable to create leading directories of %s",
+ export_marks_file);
+ return;
+ }
+
if (hold_lock_file_for_update(&mark_lock, export_marks_file, 0) < 0) {
failure |= error_errno("Unable to write marks file %s",
export_marks_file);
@@ -1763,7 +1770,6 @@ static int read_next_command(void)
} else {
struct recent_command *rc;
- strbuf_detach(&command_buf, NULL);
stdin_eof = strbuf_getline_lf(&command_buf, stdin);
if (stdin_eof)
return EOF;
@@ -1784,7 +1790,7 @@ static int read_next_command(void)
free(rc->buf);
}
- rc->buf = command_buf.buf;
+ rc->buf = xstrdup(command_buf.buf);
rc->prev = cmd_tail;
rc->next = cmd_hist.prev;
rc->prev->next = rc;
@@ -1833,7 +1839,6 @@ static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res)
char *term = xstrdup(data);
size_t term_len = command_buf.len - (data - command_buf.buf);
- strbuf_detach(&command_buf, NULL);
for (;;) {
if (strbuf_getline_lf(&command_buf, stdin) == EOF)
die("EOF in data (terminator '%s' not found)", term);
@@ -2410,7 +2415,8 @@ static void note_change_n(const char *p, struct branch *b, unsigned char *old_fa
oidcpy(&commit_oid, &commit_oe->idx.oid);
} else if (!get_oid(p, &commit_oid)) {
unsigned long size;
- char *buf = read_object_with_reference(&commit_oid,
+ char *buf = read_object_with_reference(the_repository,
+ &commit_oid,
commit_type, &size,
&commit_oid);
if (!buf || size < the_hash_algo->hexsz + 6)
@@ -2482,25 +2488,22 @@ static void parse_from_existing(struct branch *b)
unsigned long size;
char *buf;
- buf = read_object_with_reference(&b->oid, commit_type, &size,
+ buf = read_object_with_reference(the_repository,
+ &b->oid, commit_type, &size,
&b->oid);
parse_from_commit(b, buf, size);
free(buf);
}
}
-static int parse_from(struct branch *b)
+static int parse_objectish(struct branch *b, const char *objectish)
{
- const char *from;
struct branch *s;
struct object_id oid;
- if (!skip_prefix(command_buf.buf, "from ", &from))
- return 0;
-
oidcpy(&oid, &b->branch_tree.versions[1].oid);
- s = lookup_branch(from);
+ s = lookup_branch(objectish);
if (b == s)
die("Can't create a branch from itself: %s", b->name);
else if (s) {
@@ -2508,8 +2511,8 @@ static int parse_from(struct branch *b)
oidcpy(&b->oid, &s->oid);
oidcpy(&b->branch_tree.versions[0].oid, t);
oidcpy(&b->branch_tree.versions[1].oid, t);
- } else if (*from == ':') {
- uintmax_t idnum = parse_mark_ref_eol(from);
+ } else if (*objectish == ':') {
+ uintmax_t idnum = parse_mark_ref_eol(objectish);
struct object_entry *oe = find_mark(idnum);
if (oe->type != OBJ_COMMIT)
die("Mark :%" PRIuMAX " not a commit", idnum);
@@ -2523,13 +2526,13 @@ static int parse_from(struct branch *b)
} else
parse_from_existing(b);
}
- } else if (!get_oid(from, &b->oid)) {
+ } else if (!get_oid(objectish, &b->oid)) {
parse_from_existing(b);
if (is_null_oid(&b->oid))
b->delete = 1;
}
else
- die("Invalid ref name or SHA1 expression: %s", from);
+ die("Invalid ref name or SHA1 expression: %s", objectish);
if (b->branch_tree.tree && !oideq(&oid, &b->branch_tree.versions[1].oid)) {
release_tree_content_recursive(b->branch_tree.tree);
@@ -2540,6 +2543,26 @@ static int parse_from(struct branch *b)
return 1;
}
+static int parse_from(struct branch *b)
+{
+ const char *from;
+
+ if (!skip_prefix(command_buf.buf, "from ", &from))
+ return 0;
+
+ return parse_objectish(b, from);
+}
+
+static int parse_objectish_with_prefix(struct branch *b, const char *prefix)
+{
+ const char *base;
+
+ if (!skip_prefix(command_buf.buf, prefix, &base))
+ return 0;
+
+ return parse_objectish(b, base);
+}
+
static struct hash_list *parse_merge(unsigned int *count)
{
struct hash_list *list = NULL, **tail = &list, *n;
@@ -2560,7 +2583,8 @@ static struct hash_list *parse_merge(unsigned int *count)
oidcpy(&n->oid, &oe->idx.oid);
} else if (!get_oid(from, &n->oid)) {
unsigned long size;
- char *buf = read_object_with_reference(&n->oid,
+ char *buf = read_object_with_reference(the_repository,
+ &n->oid,
commit_type,
&size, &n->oid);
if (!buf || size < the_hash_algo->hexsz + 6)
@@ -2585,6 +2609,7 @@ static void parse_new_commit(const char *arg)
struct branch *b;
char *author = NULL;
char *committer = NULL;
+ char *encoding = NULL;
struct hash_list *merge_list = NULL;
unsigned int merge_count;
unsigned char prev_fanout, new_fanout;
@@ -2607,6 +2632,10 @@ static void parse_new_commit(const char *arg)
}
if (!committer)
die("Expected committer but didn't get one");
+ if (skip_prefix(command_buf.buf, "encoding ", &v)) {
+ encoding = xstrdup(v);
+ read_next_command();
+ }
parse_data(&msg, 0, NULL);
read_next_command();
parse_from(b);
@@ -2670,12 +2699,17 @@ static void parse_new_commit(const char *arg)
}
strbuf_addf(&new_data,
"author %s\n"
- "committer %s\n"
- "\n",
+ "committer %s\n",
author ? author : committer, committer);
+ if (encoding)
+ strbuf_addf(&new_data,
+ "encoding %s\n",
+ encoding);
+ strbuf_addch(&new_data, '\n');
strbuf_addbuf(&new_data, &msg);
free(author);
free(committer);
+ free(encoding);
if (!store_object(OBJ_COMMIT, &new_data, NULL, &b->oid, next_mark))
b->pack_id = pack_id;
@@ -2703,6 +2737,7 @@ static void parse_new_tag(const char *arg)
first_tag = t;
last_tag = t;
read_next_command();
+ parse_mark();
/* from ... */
if (!skip_prefix(command_buf.buf, "from ", &from))
@@ -2759,7 +2794,7 @@ static void parse_new_tag(const char *arg)
strbuf_addbuf(&new_data, &msg);
free(tagger);
- if (store_object(OBJ_TAG, &new_data, NULL, &t->oid, 0))
+ if (store_object(OBJ_TAG, &new_data, NULL, &t->oid, next_mark))
t->pack_id = MAX_PACK_ID;
else
t->pack_id = pack_id;
@@ -2768,6 +2803,7 @@ static void parse_new_tag(const char *arg)
static void parse_reset_branch(const char *arg)
{
struct branch *b;
+ const char *tag_name;
b = lookup_branch(arg);
if (b) {
@@ -2783,6 +2819,32 @@ static void parse_reset_branch(const char *arg)
b = new_branch(arg);
read_next_command();
parse_from(b);
+ if (b->delete && skip_prefix(b->name, "refs/tags/", &tag_name)) {
+ /*
+ * Elsewhere, we call dump_branches() before dump_tags(),
+ * and dump_branches() will handle ref deletions first, so
+ * in order to make sure the deletion actually takes effect,
+ * we need to remove the tag from our list of tags to update.
+ *
+ * NEEDSWORK: replace list of tags with hashmap for faster
+ * deletion?
+ */
+ struct tag *t, *prev = NULL;
+ for (t = first_tag; t; t = t->next_tag) {
+ if (!strcmp(t->name, tag_name))
+ break;
+ prev = t;
+ }
+ if (t) {
+ if (prev)
+ prev->next_tag = t->next_tag;
+ else
+ first_tag = t->next_tag;
+ if (!t->next_tag)
+ last_tag = prev;
+ /* There is no mem_pool_free(t) function to call. */
+ }
+ }
if (command_buf.len > 0)
unread_command_buf = 1;
}
@@ -3049,6 +3111,28 @@ static void parse_progress(void)
skip_optional_lf();
}
+static void parse_alias(void)
+{
+ struct object_entry *e;
+ struct branch b;
+
+ skip_optional_lf();
+ read_next_command();
+
+ /* mark ... */
+ parse_mark();
+ if (!next_mark)
+ die(_("Expected 'mark' command, got %s"), command_buf.buf);
+
+ /* to ... */
+ memset(&b, 0, sizeof(b));
+ if (!parse_objectish_with_prefix(&b, "to "))
+ die(_("Expected 'to' command, got %s"), command_buf.buf);
+ e = find_object(&b.oid);
+ assert(e);
+ insert_mark(next_mark, e);
+}
+
static char* make_fast_import_path(const char *path)
{
if (!relative_marks_paths || is_absolute_path(path))
@@ -3069,7 +3153,6 @@ static void option_import_marks(const char *marks,
}
import_marks_file = make_fast_import_path(marks);
- safe_create_leading_directories_const(import_marks_file);
import_marks_file_from_stream = from_stream;
import_marks_file_ignore_missing = ignore_missing;
}
@@ -3110,7 +3193,6 @@ static void option_active_branches(const char *branches)
static void option_export_marks(const char *marks)
{
export_marks_file = make_fast_import_path(marks);
- safe_create_leading_directories_const(export_marks_file);
}
static void option_cat_blob_fd(const char *fd)
@@ -3153,10 +3235,12 @@ static int parse_one_option(const char *option)
option_active_branches(option);
} else if (skip_prefix(option, "export-pack-edges=", &option)) {
option_export_pack_edges(option);
- } else if (starts_with(option, "quiet")) {
+ } else if (!strcmp(option, "quiet")) {
show_stats = 0;
- } else if (starts_with(option, "stats")) {
+ } else if (!strcmp(option, "stats")) {
show_stats = 1;
+ } else if (!strcmp(option, "allow-unsafe-features")) {
+ ; /* already handled during early option parsing */
} else {
return 0;
}
@@ -3164,6 +3248,13 @@ static int parse_one_option(const char *option)
return 1;
}
+static void check_unsafe_feature(const char *feature, int from_stream)
+{
+ if (from_stream && !allow_unsafe_features)
+ die(_("feature '%s' forbidden in input without --allow-unsafe-features"),
+ feature);
+}
+
static int parse_one_feature(const char *feature, int from_stream)
{
const char *arg;
@@ -3171,11 +3262,16 @@ static int parse_one_feature(const char *feature, int from_stream)
if (skip_prefix(feature, "date-format=", &arg)) {
option_date_format(arg);
} else if (skip_prefix(feature, "import-marks=", &arg)) {
+ check_unsafe_feature("import-marks", from_stream);
option_import_marks(arg, from_stream, 0);
} else if (skip_prefix(feature, "import-marks-if-exists=", &arg)) {
+ check_unsafe_feature("import-marks-if-exists", from_stream);
option_import_marks(arg, from_stream, 1);
} else if (skip_prefix(feature, "export-marks=", &arg)) {
+ check_unsafe_feature(feature, from_stream);
option_export_marks(arg);
+ } else if (!strcmp(feature, "alias")) {
+ ; /* Don't die - this feature is supported */
} else if (!strcmp(feature, "get-mark")) {
; /* Don't die - this feature is supported */
} else if (!strcmp(feature, "cat-blob")) {
@@ -3301,6 +3397,20 @@ int cmd_main(int argc, const char **argv)
avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*));
marks = mem_pool_calloc(&fi_mem_pool, 1, sizeof(struct mark_set));
+ /*
+ * We don't parse most options until after we've seen the set of
+ * "feature" lines at the start of the stream (which allows the command
+ * line to override stream data). But we must do an early parse of any
+ * command-line options that impact how we interpret the feature lines.
+ */
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+ if (*arg != '-' || !strcmp(arg, "--"))
+ break;
+ if (!strcmp(arg, "--allow-unsafe-features"))
+ allow_unsafe_features = 1;
+ }
+
global_argc = argc;
global_argv = argv;
@@ -3332,6 +3442,8 @@ int cmd_main(int argc, const char **argv)
parse_checkpoint();
else if (!strcmp("done", command_buf.buf))
break;
+ else if (!strcmp("alias", command_buf.buf))
+ parse_alias();
else if (starts_with(command_buf.buf, "progress "))
parse_progress();
else if (skip_prefix(command_buf.buf, "feature ", &v))
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 04:53:41 +0000