2 44edeea7 2019-04-11 stsp * Copyright (c) 2019 Stefan Sperling <stsp@openbsd.org>
4 44edeea7 2019-04-11 stsp * Permission to use, copy, modify, and distribute this software for any
5 44edeea7 2019-04-11 stsp * purpose with or without fee is hereby granted, provided that the above
6 44edeea7 2019-04-11 stsp * copyright notice and this permission notice appear in all copies.
8 44edeea7 2019-04-11 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 44edeea7 2019-04-11 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 44edeea7 2019-04-11 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 44edeea7 2019-04-11 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 44edeea7 2019-04-11 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 44edeea7 2019-04-11 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 44edeea7 2019-04-11 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 44edeea7 2019-04-11 stsp #include <sys/types.h>
18 44edeea7 2019-04-11 stsp #include <sys/stat.h>
19 44edeea7 2019-04-11 stsp #include <sys/queue.h>
21 44edeea7 2019-04-11 stsp #include <fcntl.h>
22 44edeea7 2019-04-11 stsp #include <stdio.h>
23 44edeea7 2019-04-11 stsp #include <stdlib.h>
24 44edeea7 2019-04-11 stsp #include <string.h>
25 44edeea7 2019-04-11 stsp #include <stdint.h>
26 44edeea7 2019-04-11 stsp #include <sha1.h>
27 a14a8cf6 2019-04-11 stsp #include <unistd.h>
28 44edeea7 2019-04-11 stsp #include <zlib.h>
30 44edeea7 2019-04-11 stsp #include "got_error.h"
31 44edeea7 2019-04-11 stsp #include "got_object.h"
32 44edeea7 2019-04-11 stsp #include "got_repository.h"
33 44edeea7 2019-04-11 stsp #include "got_opentemp.h"
35 44edeea7 2019-04-11 stsp #include "got_lib_sha1.h"
36 44edeea7 2019-04-11 stsp #include "got_lib_deflate.h"
37 44edeea7 2019-04-11 stsp #include "got_lib_delta.h"
38 44edeea7 2019-04-11 stsp #include "got_lib_object.h"
39 44edeea7 2019-04-11 stsp #include "got_lib_lockfile.h"
40 44edeea7 2019-04-11 stsp #include "got_lib_path.h"
42 44edeea7 2019-04-11 stsp #ifndef nitems
43 44edeea7 2019-04-11 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
46 44edeea7 2019-04-11 stsp const struct got_error *
47 44edeea7 2019-04-11 stsp got_object_blob_create(struct got_object_id **id, struct got_repository *repo,
48 44edeea7 2019-04-11 stsp const char *ondisk_path)
50 44edeea7 2019-04-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
51 81984c6b 2019-04-11 stsp char *header = NULL, *objpath = NULL, *outpath = NULL;
52 a14a8cf6 2019-04-11 stsp FILE *blobfile = NULL, *outfile = NULL;
53 44edeea7 2019-04-11 stsp int fd = -1;
54 44edeea7 2019-04-11 stsp struct stat sb;
55 44edeea7 2019-04-11 stsp SHA1_CTX sha1_ctx;
56 44edeea7 2019-04-11 stsp uint8_t digest[SHA1_DIGEST_LENGTH];
57 44edeea7 2019-04-11 stsp struct got_lockfile *lf = NULL;
58 ffb286fd 2019-04-11 stsp size_t outlen = 0, headerlen = 0;
62 44edeea7 2019-04-11 stsp SHA1Init(&sha1_ctx);
64 44edeea7 2019-04-11 stsp fd = open(ondisk_path, O_RDONLY | O_NOFOLLOW);
65 44edeea7 2019-04-11 stsp if (fd == -1)
66 44edeea7 2019-04-11 stsp return got_error_from_errno();
68 44edeea7 2019-04-11 stsp if (fstat(fd, &sb) == -1) {
69 44edeea7 2019-04-11 stsp err = got_error_from_errno();
73 44edeea7 2019-04-11 stsp if (asprintf(&header, "%s %lld", GOT_OBJ_LABEL_BLOB,
74 44edeea7 2019-04-11 stsp sb.st_size) == -1) {
75 44edeea7 2019-04-11 stsp err = got_error_from_errno();
78 ffb286fd 2019-04-11 stsp headerlen = strlen(header) + 1;
79 ffb286fd 2019-04-11 stsp SHA1Update(&sha1_ctx, header, headerlen);
81 81984c6b 2019-04-11 stsp blobfile = got_opentemp();
82 81984c6b 2019-04-11 stsp if (blobfile == NULL) {
83 81984c6b 2019-04-11 stsp err = got_error_from_errno();
87 ffb286fd 2019-04-11 stsp outlen = fwrite(header, 1, headerlen, blobfile);
88 ffb286fd 2019-04-11 stsp if (outlen != headerlen) {
89 f16c2465 2019-04-11 stsp err = got_ferror(blobfile, GOT_ERR_IO);
93 44edeea7 2019-04-11 stsp char buf[8192];
94 a14a8cf6 2019-04-11 stsp ssize_t inlen;
95 a14a8cf6 2019-04-11 stsp size_t outlen;
97 a14a8cf6 2019-04-11 stsp inlen = read(fd, buf, sizeof(buf));
98 a14a8cf6 2019-04-11 stsp if (inlen == -1) {
99 a14a8cf6 2019-04-11 stsp err = got_error_from_errno();
102 a14a8cf6 2019-04-11 stsp if (inlen == 0)
103 a14a8cf6 2019-04-11 stsp break; /* EOF */
104 44edeea7 2019-04-11 stsp SHA1Update(&sha1_ctx, buf, inlen);
105 44edeea7 2019-04-11 stsp outlen = fwrite(buf, 1, inlen, blobfile);
106 44edeea7 2019-04-11 stsp if (outlen != inlen) {
107 44edeea7 2019-04-11 stsp err = got_ferror(blobfile, GOT_ERR_IO);
112 44edeea7 2019-04-11 stsp SHA1Final(digest, &sha1_ctx);
113 44edeea7 2019-04-11 stsp *id = malloc(sizeof(**id));
114 44edeea7 2019-04-11 stsp if (*id == NULL) {
115 44edeea7 2019-04-11 stsp err = got_error_from_errno();
118 44edeea7 2019-04-11 stsp memcpy((*id)->sha1, digest, SHA1_DIGEST_LENGTH);
120 44edeea7 2019-04-11 stsp if (fflush(blobfile) != 0) {
121 44edeea7 2019-04-11 stsp err = got_error_from_errno();
124 44edeea7 2019-04-11 stsp rewind(blobfile);
126 44edeea7 2019-04-11 stsp err = got_object_get_path(&objpath, *id, repo);
130 44edeea7 2019-04-11 stsp err = got_opentemp_named(&outpath, &outfile, objpath);
134 44edeea7 2019-04-11 stsp err = got_deflate_to_file(&outlen, blobfile, outfile);
138 44edeea7 2019-04-11 stsp err = got_lockfile_lock(&lf, objpath);
142 44edeea7 2019-04-11 stsp if (rename(outpath, objpath) != 0) {
143 44edeea7 2019-04-11 stsp err = got_error_from_errno();
146 44edeea7 2019-04-11 stsp free(outpath);
147 44edeea7 2019-04-11 stsp outpath = NULL;
149 44edeea7 2019-04-11 stsp if (chmod(objpath, GOT_DEFAULT_FILE_MODE) != 0) {
150 44edeea7 2019-04-11 stsp err = got_error_from_errno();
154 44edeea7 2019-04-11 stsp free(header);
155 f488e73c 2019-04-11 stsp free(objpath);
156 44edeea7 2019-04-11 stsp if (outpath) {
157 44edeea7 2019-04-11 stsp if (unlink(outpath) != 0 && err == NULL)
158 44edeea7 2019-04-11 stsp err = got_error_from_errno();
159 44edeea7 2019-04-11 stsp free(outpath);
161 44edeea7 2019-04-11 stsp if (fd != -1 && close(fd) != 0 && err == NULL)
162 44edeea7 2019-04-11 stsp err = got_error_from_errno();
163 44edeea7 2019-04-11 stsp if (blobfile && fclose(blobfile) != 0 && err == NULL)
164 44edeea7 2019-04-11 stsp err = got_error_from_errno();
165 44edeea7 2019-04-11 stsp if (outfile && fclose(outfile) != 0 && err == NULL)
166 44edeea7 2019-04-11 stsp err = got_error_from_errno();
169 44edeea7 2019-04-11 stsp *id = NULL;
172 44edeea7 2019-04-11 stsp unlock_err = got_lockfile_unlock(lf);
173 44edeea7 2019-04-11 stsp return err ? err : unlock_err;