work around an obnoxious bash "safety feature" on OpenBSD

diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c
index 40b20f26e86acca2ee37b34519e84a1ce79689c3..685566e0b5e458c510fdf989744d63dda29e28f0 100644 (file)
--- a/builtin-unpack-objects.c
+++ b/builtin-unpack-objects.c
@@ -19,7 +19,7 @@ static const char unpack_usage[] = "git unpack-objects [-n] [-q] [-r] [--strict]
 static unsigned char buffer[4096];
 static unsigned int offset, len;
 static off_t consumed_bytes;
-static SHA_CTX ctx;
+static git_SHA_CTX ctx;
 
 /*
  * When running under --strict mode, objects whose reachability are
@@ -59,7 +59,7 @@ static void *fill(int min)
        if (min > sizeof(buffer))
                die("cannot fill %d bytes", min);
        if (offset) {
-               SHA1_Update(&ctx, buffer, offset);
+               git_SHA1_Update(&ctx, buffer, offset);
                memmove(buffer, buffer + offset, len);
                offset = 0;
        }
@@ -68,7 +68,7 @@ static void *fill(int min)
                if (ret <= 0) {
                        if (!ret)
                                die("early EOF");
-                       die("read error on input: %s", strerror(errno));
+                       die_errno("read error on input");
                }
                len += ret;
        } while (len < min);
@@ -99,10 +99,10 @@ static void *get_data(unsigned long size)
        stream.avail_out = size;
        stream.next_in = fill(1);
        stream.avail_in = len;
-       inflateInit(&stream);
+       git_inflate_init(&stream);
 
        for (;;) {
-               int ret = inflate(&stream, 0);
+               int ret = git_inflate(&stream, 0);
                use(len - stream.avail_in);
                if (stream.total_out == size && ret == Z_STREAM_END)
                        break;
@@ -118,7 +118,7 @@ static void *get_data(unsigned long size)
                stream.next_in = fill(1);
                stream.avail_in = len;
        }
-       inflateEnd(&stream);
+       git_inflate_end(&stream);
        return buf;
 }
 
@@ -158,7 +158,7 @@ struct obj_info {
 #define FLAG_WRITTEN (1u<<21)
 
 static struct obj_info *obj_list;
-unsigned nr_objects;
+static unsigned nr_objects;
 
 /*
  * Called only from check_object() after it verified this object
@@ -181,10 +181,10 @@ static void write_cached_object(struct object *obj)
 static int check_object(struct object *obj, int type, void *data)
 {
        if (!obj)
-               return 0;
+               return 1;
 
        if (obj->flags & FLAG_WRITTEN)
-               return 1;
+               return 0;
 
        if (type != OBJ_ANY && obj->type != type)
                die("object type mismatch");
@@ -195,22 +195,24 @@ static int check_object(struct object *obj, int type, void *data)
                if (type != obj->type || type <= 0)
                        die("object of unexpected type");
                obj->flags |= FLAG_WRITTEN;
-               return 1;
+               return 0;
        }
 
        if (fsck_object(obj, 1, fsck_error_function))
                die("Error in object");
-       if (!fsck_walk(obj, check_object, 0))
+       if (fsck_walk(obj, check_object, NULL))
                die("Error on reachable objects of %s", sha1_to_hex(obj->sha1));
        write_cached_object(obj);
-       return 1;
+       return 0;
 }
 
 static void write_rest(void)
 {
        unsigned i;
-       for (i = 0; i < nr_objects; i++)
-               check_object(obj_list[i].obj, OBJ_ANY, 0);
+       for (i = 0; i < nr_objects; i++) {
+               if (obj_list[i].obj)
+                       check_object(obj_list[i].obj, OBJ_ANY, NULL);
+       }
 }
 
 static void added_object(unsigned nr, enum object_type type,
@@ -370,6 +372,8 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size,
                        base_offset = (base_offset << 7) + (c & 127);
                }
                base_offset = obj_list[nr].offset - base_offset;
+               if (base_offset <= 0 || base_offset >= obj_list[nr].offset)
+                       die("offset value out of bound for delta base object");
 
                delta_data = get_data(delta_size);
                if (dry_run || !delta_data) {
@@ -420,8 +424,8 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size,
 static void unpack_one(unsigned nr)
 {
        unsigned shift;
-       unsigned char *pack, c;
-       unsigned long size;
+       unsigned char *pack;
+       unsigned long size, c;
        enum object_type type;
 
        obj_list[nr].offset = consumed_bytes;
@@ -477,8 +481,7 @@ static void unpack_all(void)
 
        if (!quiet)
                progress = start_progress("Unpacking objects", nr_objects);
-       obj_list = xmalloc(nr_objects * sizeof(*obj_list));
-       memset(obj_list, 0, nr_objects * sizeof(*obj_list));
+       obj_list = xcalloc(nr_objects, sizeof(*obj_list));
        for (i = 0; i < nr_objects; i++) {
                unpack_one(i);
                display_progress(progress, i + 1);
@@ -494,6 +497,8 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
        int i;
        unsigned char sha1[20];
 
+       read_replace_refs = 0;
+
        git_config(git_default_config, NULL);
 
        quiet = !isatty(2);
@@ -539,10 +544,10 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
                /* We don't take any non-flag arguments now.. Maybe some day */
                usage(unpack_usage);
        }
-       SHA1_Init(&ctx);
+       git_SHA1_Init(&ctx);
        unpack_all();
-       SHA1_Update(&ctx, buffer, offset);
-       SHA1_Final(sha1, &ctx);
+       git_SHA1_Update(&ctx, buffer, offset);
+       git_SHA1_Final(sha1, &ctx);
        if (strict)
                write_rest();
        if (hashcmp(fill(20), sha1))