packfile: convert unpack_entry to struct object_id
[gitweb.git] / sha1_file.c
index 81a4bfb80137d0e76cefa65b8282806131006fd0..a307037e88066d73b1e05e6bcad2527a5396125a 100644 (file)
@@ -39,32 +39,32 @@ const struct object_id empty_blob_oid = {
        EMPTY_BLOB_SHA1_BIN_LITERAL
 };
 
-static void git_hash_sha1_init(void *ctx)
+static void git_hash_sha1_init(git_hash_ctx *ctx)
 {
-       git_SHA1_Init((git_SHA_CTX *)ctx);
+       git_SHA1_Init(&ctx->sha1);
 }
 
-static void git_hash_sha1_update(void *ctx, const void *data, size_t len)
+static void git_hash_sha1_update(git_hash_ctx *ctx, const void *data, size_t len)
 {
-       git_SHA1_Update((git_SHA_CTX *)ctx, data, len);
+       git_SHA1_Update(&ctx->sha1, data, len);
 }
 
-static void git_hash_sha1_final(unsigned char *hash, void *ctx)
+static void git_hash_sha1_final(unsigned char *hash, git_hash_ctx *ctx)
 {
-       git_SHA1_Final(hash, (git_SHA_CTX *)ctx);
+       git_SHA1_Final(hash, &ctx->sha1);
 }
 
-static void git_hash_unknown_init(void *ctx)
+static void git_hash_unknown_init(git_hash_ctx *ctx)
 {
        die("trying to init unknown hash");
 }
 
-static void git_hash_unknown_update(void *ctx, const void *data, size_t len)
+static void git_hash_unknown_update(git_hash_ctx *ctx, const void *data, size_t len)
 {
        die("trying to update unknown hash");
 }
 
-static void git_hash_unknown_final(unsigned char *hash, void *ctx)
+static void git_hash_unknown_final(unsigned char *hash, git_hash_ctx *ctx)
 {
        die("trying to finalize unknown hash");
 }
@@ -75,7 +75,6 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
                0x00000000,
                0,
                0,
-               0,
                git_hash_unknown_init,
                git_hash_unknown_update,
                git_hash_unknown_final,
@@ -86,7 +85,6 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
                "sha-1",
                /* "sha1", big-endian */
                0x73686131,
-               sizeof(git_SHA_CTX),
                GIT_SHA1_RAWSZ,
                GIT_SHA1_HEXSZ,
                git_hash_sha1_init,
@@ -786,31 +784,31 @@ void *xmmap(void *start, size_t length,
  * With "map" == NULL, try reading the object named with "sha1" using
  * the streaming interface and rehash it to do the same.
  */
-int check_sha1_signature(const unsigned char *sha1, void *map,
-                        unsigned long size, const char *type)
+int check_object_signature(const struct object_id *oid, void *map,
+                          unsigned long size, const char *type)
 {
        struct object_id real_oid;
        enum object_type obj_type;
        struct git_istream *st;
-       git_SHA_CTX c;
+       git_hash_ctx c;
        char hdr[32];
        int hdrlen;
 
        if (map) {
                hash_object_file(map, size, type, &real_oid);
-               return hashcmp(sha1, real_oid.hash) ? -1 : 0;
+               return oidcmp(oid, &real_oid) ? -1 : 0;
        }
 
-       st = open_istream(sha1, &obj_type, &size, NULL);
+       st = open_istream(oid, &obj_type, &size, NULL);
        if (!st)
                return -1;
 
        /* Generate the header */
-       hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(obj_type), size) + 1;
+       hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(obj_type), size) + 1;
 
        /* Sha1.. */
-       git_SHA1_Init(&c);
-       git_SHA1_Update(&c, hdr, hdrlen);
+       the_hash_algo->init_fn(&c);
+       the_hash_algo->update_fn(&c, hdr, hdrlen);
        for (;;) {
                char buf[1024 * 16];
                ssize_t readlen = read_istream(st, buf, sizeof(buf));
@@ -821,11 +819,11 @@ int check_sha1_signature(const unsigned char *sha1, void *map,
                }
                if (!readlen)
                        break;
-               git_SHA1_Update(&c, buf, readlen);
+               the_hash_algo->update_fn(&c, buf, readlen);
        }
-       git_SHA1_Final(real_oid.hash, &c);
+       the_hash_algo->final_fn(real_oid.hash, &c);
        close_istream(st);
-       return hashcmp(sha1, real_oid.hash) ? -1 : 0;
+       return oidcmp(oid, &real_oid) ? -1 : 0;
 }
 
 int git_open_cloexec(const char *name, int flags)
@@ -1096,8 +1094,8 @@ static int parse_sha1_header_extended(const char *hdr, struct object_info *oi,
        }
 
        type = type_from_string_gently(type_buf, type_len, 1);
-       if (oi->typename)
-               strbuf_add(oi->typename, type_buf, type_len);
+       if (oi->type_name)
+               strbuf_add(oi->type_name, type_buf, type_len);
        /*
         * Set type to 0 if its an unknown object and
         * we're obtaining the type using '--allow-unknown-type'
@@ -1167,7 +1165,7 @@ static int sha1_loose_object_info(const unsigned char *sha1,
         * return value implicitly indicates whether the
         * object even exists.
         */
-       if (!oi->typep && !oi->typename && !oi->sizep && !oi->contentp) {
+       if (!oi->typep && !oi->type_name && !oi->sizep && !oi->contentp) {
                const char *path;
                struct stat st;
                if (stat_sha1_file(sha1, &st, &path) < 0)
@@ -1251,8 +1249,8 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi,
                                *(oi->disk_sizep) = 0;
                        if (oi->delta_base_sha1)
                                hashclr(oi->delta_base_sha1);
-                       if (oi->typename)
-                               strbuf_addstr(oi->typename, typename(co->type));
+                       if (oi->type_name)
+                               strbuf_addstr(oi->type_name, type_name(co->type));
                        if (oi->contentp)
                                *oi->contentp = xmemdupz(co->buf, co->size);
                        oi->whence = OI_CACHED;
@@ -1341,7 +1339,7 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
 {
        struct cached_object *co;
 
-       hash_object_file(buf, len, typename(type), oid);
+       hash_object_file(buf, len, type_name(type), oid);
        if (has_sha1_file(oid->hash) || find_cached_object(oid->hash))
                return 0;
        ALLOC_GROW(cached_objects, cached_object_nr + 1, cached_object_alloc);
@@ -1447,16 +1445,16 @@ static void write_object_file_prepare(const void *buf, unsigned long len,
                                      const char *type, struct object_id *oid,
                                      char *hdr, int *hdrlen)
 {
-       git_SHA_CTX c;
+       git_hash_ctx c;
 
        /* Generate the header */
        *hdrlen = xsnprintf(hdr, *hdrlen, "%s %lu", type, len)+1;
 
        /* Sha1.. */
-       git_SHA1_Init(&c);
-       git_SHA1_Update(&c, hdr, *hdrlen);
-       git_SHA1_Update(&c, buf, len);
-       git_SHA1_Final(oid->hash, &c);
+       the_hash_algo->init_fn(&c);
+       the_hash_algo->update_fn(&c, hdr, *hdrlen);
+       the_hash_algo->update_fn(&c, buf, len);
+       the_hash_algo->final_fn(oid->hash, &c);
 }
 
 /*
@@ -1579,7 +1577,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
        int fd, ret;
        unsigned char compressed[4096];
        git_zstream stream;
-       git_SHA_CTX c;
+       git_hash_ctx c;
        struct object_id parano_oid;
        static struct strbuf tmp_file = STRBUF_INIT;
        static struct strbuf filename = STRBUF_INIT;
@@ -1599,14 +1597,14 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
        git_deflate_init(&stream, zlib_compression_level);
        stream.next_out = compressed;
        stream.avail_out = sizeof(compressed);
-       git_SHA1_Init(&c);
+       the_hash_algo->init_fn(&c);
 
        /* First header.. */
        stream.next_in = (unsigned char *)hdr;
        stream.avail_in = hdrlen;
        while (git_deflate(&stream, 0) == Z_OK)
                ; /* nothing */
-       git_SHA1_Update(&c, hdr, hdrlen);
+       the_hash_algo->update_fn(&c, hdr, hdrlen);
 
        /* Then the data itself.. */
        stream.next_in = (void *)buf;
@@ -1614,7 +1612,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
        do {
                unsigned char *in0 = stream.next_in;
                ret = git_deflate(&stream, Z_FINISH);
-               git_SHA1_Update(&c, in0, stream.next_in - in0);
+               the_hash_algo->update_fn(&c, in0, stream.next_in - in0);
                if (write_buffer(fd, compressed, stream.next_out - compressed) < 0)
                        die("unable to write sha1 file");
                stream.next_out = compressed;
@@ -1628,7 +1626,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
        if (ret != Z_OK)
                die("deflateEnd on object %s failed (%d)", oid_to_hex(oid),
                    ret);
-       git_SHA1_Final(parano_oid.hash, &c);
+       the_hash_algo->final_fn(parano_oid.hash, &c);
        if (oidcmp(oid, &parano_oid) != 0)
                die("confused by unstable object source data for %s",
                    oid_to_hex(oid));
@@ -1716,7 +1714,7 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
        buf = read_object(oid->hash, &type, &len);
        if (!buf)
                return error("cannot read sha1_file for %s", oid_to_hex(oid));
-       hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(type), len) + 1;
+       hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(type), len) + 1;
        ret = write_loose_object(oid, hdr, hdrlen, buf, len, mtime);
        free(buf);
 
@@ -1800,9 +1798,9 @@ static int index_mem(struct object_id *oid, void *buf, size_t size,
        }
 
        if (write_object)
-               ret = write_object_file(buf, size, typename(type), oid);
+               ret = write_object_file(buf, size, type_name(type), oid);
        else
-               ret = hash_object_file(buf, size, typename(type), oid);
+               ret = hash_object_file(buf, size, type_name(type), oid);
        if (re_allocated)
                free(buf);
        return ret;
@@ -1822,10 +1820,10 @@ static int index_stream_convert_blob(struct object_id *oid, int fd,
                                 get_conv_flags(flags));
 
        if (write_object)
-               ret = write_object_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
+               ret = write_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
                                        oid);
        else
-               ret = hash_object_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
+               ret = hash_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
                                       oid);
        strbuf_release(&sbuf);
        return ret;
@@ -1894,7 +1892,7 @@ static int index_stream(struct object_id *oid, int fd, size_t size,
                        enum object_type type, const char *path,
                        unsigned flags)
 {
-       return index_bulk_checkin(oid->hash, fd, size, type, path, flags);
+       return index_bulk_checkin(oid, fd, size, type, path, flags);
 }
 
 int index_fd(struct object_id *oid, int fd, struct stat *st,
@@ -1968,14 +1966,14 @@ int read_pack_header(int fd, struct pack_header *header)
        return 0;
 }
 
-void assert_sha1_type(const unsigned char *sha1, enum object_type expect)
+void assert_oid_type(const struct object_id *oid, enum object_type expect)
 {
-       enum object_type type = sha1_object_info(sha1, NULL);
+       enum object_type type = sha1_object_info(oid->hash, NULL);
        if (type < 0)
-               die("%s is not a valid object", sha1_to_hex(sha1));
+               die("%s is not a valid object", oid_to_hex(oid));
        if (type != expect)
-               die("%s is not a valid '%s' object", sha1_to_hex(sha1),
-                   typename(expect));
+               die("%s is not a valid '%s' object", oid_to_hex(oid),
+                   type_name(expect));
 }
 
 int for_each_file_in_obj_subdir(unsigned int subdir_nr,
@@ -2126,14 +2124,14 @@ static int check_stream_sha1(git_zstream *stream,
                             const char *path,
                             const unsigned char *expected_sha1)
 {
-       git_SHA_CTX c;
+       git_hash_ctx c;
        unsigned char real_sha1[GIT_MAX_RAWSZ];
        unsigned char buf[4096];
        unsigned long total_read;
        int status = Z_OK;
 
-       git_SHA1_Init(&c);
-       git_SHA1_Update(&c, hdr, stream->total_out);
+       the_hash_algo->init_fn(&c);
+       the_hash_algo->update_fn(&c, hdr, stream->total_out);
 
        /*
         * We already read some bytes into hdr, but the ones up to the NUL
@@ -2152,7 +2150,7 @@ static int check_stream_sha1(git_zstream *stream,
                if (size - total_read < stream->avail_out)
                        stream->avail_out = size - total_read;
                status = git_inflate(stream, Z_FINISH);
-               git_SHA1_Update(&c, buf, stream->next_out - buf);
+               the_hash_algo->update_fn(&c, buf, stream->next_out - buf);
                total_read += stream->next_out - buf;
        }
        git_inflate_end(stream);
@@ -2167,7 +2165,7 @@ static int check_stream_sha1(git_zstream *stream,
                return -1;
        }
 
-       git_SHA1_Final(real_sha1, &c);
+       the_hash_algo->final_fn(real_sha1, &c);
        if (hashcmp(expected_sha1, real_sha1)) {
                error("sha1 mismatch for %s (expected %s)", path,
                      sha1_to_hex(expected_sha1));
@@ -2178,7 +2176,7 @@ static int check_stream_sha1(git_zstream *stream,
 }
 
 int read_loose_object(const char *path,
-                     const unsigned char *expected_sha1,
+                     const struct object_id *expected_oid,
                      enum object_type *type,
                      unsigned long *size,
                      void **contents)
@@ -2210,19 +2208,19 @@ int read_loose_object(const char *path,
        }
 
        if (*type == OBJ_BLOB) {
-               if (check_stream_sha1(&stream, hdr, *size, path, expected_sha1) < 0)
+               if (check_stream_sha1(&stream, hdr, *size, path, expected_oid->hash) < 0)
                        goto out;
        } else {
-               *contents = unpack_sha1_rest(&stream, hdr, *size, expected_sha1);
+               *contents = unpack_sha1_rest(&stream, hdr, *size, expected_oid->hash);
                if (!*contents) {
                        error("unable to unpack contents of %s", path);
                        git_inflate_end(&stream);
                        goto out;
                }
-               if (check_sha1_signature(expected_sha1, *contents,
-                                        *size, typename(*type))) {
+               if (check_object_signature(expected_oid, *contents,
+                                        *size, type_name(*type))) {
                        error("sha1 mismatch for %s (expected %s)", path,
-                             sha1_to_hex(expected_sha1));
+                             oid_to_hex(expected_oid));
                        free(*contents);
                        goto out;
                }