Merge branch 'jk/skip-prefix'

* jk/skip-prefix:
  http-push: refactor parsing of remote object names
  imap-send: use skip_prefix instead of using magic numbers
  use skip_prefix to avoid repeated calculations
  git: avoid magic number with skip_prefix
  fetch-pack: refactor parsing in get_ack
  fast-import: refactor parsing of spaces
  stat_opt: check extra strlen call
  daemon: use skip_prefix to avoid magic numbers
  fast-import: use skip_prefix for parsing input
  use skip_prefix to avoid repeating strings
  use skip_prefix to avoid magic numbers
  transport-helper: avoid reading past end-of-string
  fast-import: fix read of uninitialized argv memory
  apply: use skip_prefix instead of raw addition
  refactor skip_prefix to return a boolean
  avoid using skip_prefix as a boolean
  daemon: mark some strings as const
  parse_diff_color_slot: drop ofs parameter

1 files changed, 29 insertions, 20 deletions

diff --git a/http-push.c b/http-push.c
index de00d1693a..c5c95e85ea 100644
--- a/http-push.c
+++ b/http-push.c
@@ -719,14 +719,10 @@ static int fetch_indices(void)
 	return ret;
 }
 
-static void one_remote_object(const char *hex)
+static void one_remote_object(const unsigned char *sha1)
 {
-	unsigned char sha1[20];
 	struct object *obj;
 
-	if (get_sha1_hex(hex, sha1) != 0)
-		return;
-
 	obj = lookup_object(sha1);
 	if (!obj)
 		obj = parse_object(sha1);
@@ -770,9 +766,9 @@ static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
 			lock->owner = xmalloc(strlen(ctx->cdata) + 1);
 			strcpy(lock->owner, ctx->cdata);
 		} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
-			if (starts_with(ctx->cdata, "Second-"))
-				lock->timeout =
-					strtol(ctx->cdata + 7, NULL, 10);
+			const char *arg;
+			if (skip_prefix(ctx->cdata, "Second-", &arg))
+				lock->timeout = strtol(arg, NULL, 10);
 		} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
 			lock->token = xmalloc(strlen(ctx->cdata) + 1);
 			strcpy(lock->token, ctx->cdata);
@@ -1020,26 +1016,38 @@ static void remote_ls(const char *path, int flags,
 		      void (*userFunc)(struct remote_ls_ctx *ls),
 		      void *userData);
 
+/* extract hex from sharded "xx/x{40}" filename */
+static int get_sha1_hex_from_objpath(const char *path, unsigned char *sha1)
+{
+	char hex[40];
+
+	if (strlen(path) != 41)
+		return -1;
+
+	memcpy(hex, path, 2);
+	path += 2;
+	path++; /* skip '/' */
+	memcpy(hex, path, 38);
+
+	return get_sha1_hex(hex, sha1);
+}
+
 static void process_ls_object(struct remote_ls_ctx *ls)
 {
 	unsigned int *parent = (unsigned int *)ls->userData;
-	char *path = ls->dentry_name;
-	char *obj_hex;
+	const char *path = ls->dentry_name;
+	unsigned char sha1[20];
 
 	if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
 		remote_dir_exists[*parent] = 1;
 		return;
 	}
 
-	if (strlen(path) != 49)
+	if (!skip_prefix(path, "objects/", &path) ||
+	    get_sha1_hex_from_objpath(path, sha1))
 		return;
-	path += 8;
-	obj_hex = xmalloc(strlen(path));
-	/* NB: path is not null-terminated, can not use strlcpy here */
-	memcpy(obj_hex, path, 2);
-	strcpy(obj_hex + 2, path + 3);
-	one_remote_object(obj_hex);
-	free(obj_hex);
+
+	one_remote_object(sha1);
 }
 
 static void process_ls_ref(struct remote_ls_ctx *ls)
@@ -1561,6 +1569,7 @@ static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
 {
 	char *url;
 	struct strbuf buffer = STRBUF_INIT;
+	const char *name;
 
 	url = xmalloc(strlen(repo->url) + strlen(path) + 1);
 	sprintf(url, "%s%s", repo->url, path);
@@ -1578,8 +1587,8 @@ static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
 		return;
 
 	/* If it's a symref, set the refname; otherwise try for a sha1 */
-	if (starts_with((char *)buffer.buf, "ref: ")) {
-		*symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
+	if (skip_prefix(buffer.buf, "ref: ", &name)) {
+		*symref = xmemdupz(name, buffer.len - (name - buffer.buf));
 	} else {
 		get_sha1_hex(buffer.buf, sha1);
 	}