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 44edeea7 2019-04-11 stsp #include <zlib.h>
29 44edeea7 2019-04-11 stsp #include "got_error.h"
30 44edeea7 2019-04-11 stsp #include "got_object.h"
31 44edeea7 2019-04-11 stsp #include "got_repository.h"
32 44edeea7 2019-04-11 stsp #include "got_opentemp.h"
34 44edeea7 2019-04-11 stsp #include "got_lib_sha1.h"
35 44edeea7 2019-04-11 stsp #include "got_lib_deflate.h"
36 44edeea7 2019-04-11 stsp #include "got_lib_delta.h"
37 44edeea7 2019-04-11 stsp #include "got_lib_object.h"
38 44edeea7 2019-04-11 stsp #include "got_lib_lockfile.h"
39 44edeea7 2019-04-11 stsp #include "got_lib_path.h"
41 44edeea7 2019-04-11 stsp #ifndef nitems
42 44edeea7 2019-04-11 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
45 44edeea7 2019-04-11 stsp const struct got_error *
46 44edeea7 2019-04-11 stsp got_object_blob_create(struct got_object_id **id, struct got_repository *repo,
47 44edeea7 2019-04-11 stsp const char *ondisk_path)
49 44edeea7 2019-04-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
50 44edeea7 2019-04-11 stsp char *header = NULL, *blobpath = NULL, *objpath = NULL, *outpath = NULL;
51 44edeea7 2019-04-11 stsp FILE *infile = NULL, *blobfile = NULL, *outfile = NULL;
52 44edeea7 2019-04-11 stsp int fd = -1;
53 44edeea7 2019-04-11 stsp struct stat sb;
54 44edeea7 2019-04-11 stsp SHA1_CTX sha1_ctx;
55 44edeea7 2019-04-11 stsp uint8_t digest[SHA1_DIGEST_LENGTH];
56 44edeea7 2019-04-11 stsp struct got_lockfile *lf = NULL;
57 44edeea7 2019-04-11 stsp size_t outlen = 0;
61 44edeea7 2019-04-11 stsp SHA1Init(&sha1_ctx);
63 44edeea7 2019-04-11 stsp fd = open(ondisk_path, O_RDONLY | O_NOFOLLOW);
64 44edeea7 2019-04-11 stsp if (fd == -1)
65 44edeea7 2019-04-11 stsp return got_error_from_errno();
67 44edeea7 2019-04-11 stsp if (fstat(fd, &sb) == -1) {
68 44edeea7 2019-04-11 stsp err = got_error_from_errno();
72 44edeea7 2019-04-11 stsp if (asprintf(&header, "%s %lld", GOT_OBJ_LABEL_BLOB,
73 44edeea7 2019-04-11 stsp sb.st_size) == -1) {
74 44edeea7 2019-04-11 stsp err = got_error_from_errno();
77 44edeea7 2019-04-11 stsp SHA1Update(&sha1_ctx, header, strlen(header) + 1);
79 44edeea7 2019-04-11 stsp infile = fdopen(fd, "r");
80 44edeea7 2019-04-11 stsp if (infile == NULL) {
81 44edeea7 2019-04-11 stsp err = got_error_from_errno();
86 44edeea7 2019-04-11 stsp err = got_opentemp_named(&blobpath, &blobfile, "/tmp/got-blob-create");
91 44edeea7 2019-04-11 stsp char buf[8192];
92 44edeea7 2019-04-11 stsp size_t inlen, outlen;
94 44edeea7 2019-04-11 stsp inlen = fread(buf, 1, sizeof(buf), infile);
95 44edeea7 2019-04-11 stsp if (inlen == 0) {
96 44edeea7 2019-04-11 stsp if (ferror(infile)) {
97 44edeea7 2019-04-11 stsp err = got_error_from_errno();
100 44edeea7 2019-04-11 stsp break; /* EOF */
102 44edeea7 2019-04-11 stsp SHA1Update(&sha1_ctx, buf, inlen);
103 44edeea7 2019-04-11 stsp outlen = fwrite(buf, 1, inlen, blobfile);
104 44edeea7 2019-04-11 stsp if (outlen != inlen) {
105 44edeea7 2019-04-11 stsp err = got_ferror(blobfile, GOT_ERR_IO);
110 44edeea7 2019-04-11 stsp SHA1Final(digest, &sha1_ctx);
111 44edeea7 2019-04-11 stsp *id = malloc(sizeof(**id));
112 44edeea7 2019-04-11 stsp if (*id == NULL) {
113 44edeea7 2019-04-11 stsp err = got_error_from_errno();
116 44edeea7 2019-04-11 stsp memcpy((*id)->sha1, digest, SHA1_DIGEST_LENGTH);
118 44edeea7 2019-04-11 stsp if (fflush(blobfile) != 0) {
119 44edeea7 2019-04-11 stsp err = got_error_from_errno();
122 44edeea7 2019-04-11 stsp rewind(blobfile);
124 44edeea7 2019-04-11 stsp err = got_object_get_path(&objpath, *id, repo);
128 44edeea7 2019-04-11 stsp err = got_opentemp_named(&outpath, &outfile, objpath);
132 44edeea7 2019-04-11 stsp err = got_deflate_to_file(&outlen, blobfile, outfile);
136 44edeea7 2019-04-11 stsp err = got_lockfile_lock(&lf, objpath);
140 44edeea7 2019-04-11 stsp if (rename(outpath, objpath) != 0) {
141 44edeea7 2019-04-11 stsp err = got_error_from_errno();
144 44edeea7 2019-04-11 stsp free(outpath);
145 44edeea7 2019-04-11 stsp outpath = NULL;
147 44edeea7 2019-04-11 stsp if (chmod(objpath, GOT_DEFAULT_FILE_MODE) != 0) {
148 44edeea7 2019-04-11 stsp err = got_error_from_errno();
152 44edeea7 2019-04-11 stsp free(header);
153 44edeea7 2019-04-11 stsp free(blobpath);
154 44edeea7 2019-04-11 stsp if (outpath) {
155 44edeea7 2019-04-11 stsp if (unlink(outpath) != 0 && err == NULL)
156 44edeea7 2019-04-11 stsp err = got_error_from_errno();
157 44edeea7 2019-04-11 stsp free(outpath);
159 44edeea7 2019-04-11 stsp if (fd != -1 && close(fd) != 0 && err == NULL)
160 44edeea7 2019-04-11 stsp err = got_error_from_errno();
161 44edeea7 2019-04-11 stsp if (infile && fclose(infile) != 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;