8 static const char upload_pack_usage
[] = "git-upload-pack [--strict] [--timeout=nn] <dir>";
10 #define THEY_HAVE (1U << 0)
13 static int nr_has
= 0, nr_needs
= 0, multi_ack
= 0;
14 static unsigned char has_sha1
[MAX_HAS
][20];
15 static unsigned char needs_sha1
[MAX_NEEDS
][20];
16 static unsigned int timeout
= 0;
18 static void reset_timeout(void)
23 static int strip(char *line
, int len
)
25 if (len
&& line
[len
-1] == '\n')
30 static void create_pack_file(void)
36 die("git-upload-pack: unable to create pipe");
39 die("git-upload-pack: unable to fork git-rev-list");
48 if (MAX_NEEDS
<= nr_needs
)
51 args
= nr_has
+ nr_needs
+ 5;
52 argv
= xmalloc(args
* sizeof(char *));
53 buf
= xmalloc(args
* 45);
60 *p
++ = "git-rev-list";
62 if (MAX_NEEDS
<= nr_needs
)
65 for (i
= 0; i
< nr_needs
; i
++) {
67 memcpy(buf
, sha1_to_hex(needs_sha1
[i
]), 41);
71 for (i
= 0; i
< nr_has
; i
++) {
74 memcpy(buf
, sha1_to_hex(has_sha1
[i
]), 41);
78 execvp("git-rev-list", argv
);
79 die("git-upload-pack: unable to exec git-rev-list");
84 execlp("git-pack-objects", "git-pack-objects", "--stdout", NULL
);
85 die("git-upload-pack: unable to exec git-pack-objects");
88 static int got_sha1(char *hex
, unsigned char *sha1
)
90 if (get_sha1_hex(hex
, sha1
))
91 die("git-upload-pack: expected SHA1 object, got '%s'", hex
);
92 if (!has_sha1_file(sha1
))
94 if (nr_has
< MAX_HAS
) {
95 struct object
*o
= lookup_object(sha1
);
96 if (!(o
&& o
->parsed
))
97 o
= parse_object(sha1
);
99 die("oops (%s)", sha1_to_hex(sha1
));
100 if (o
->type
== commit_type
) {
101 struct commit_list
*parents
;
102 if (o
->flags
& THEY_HAVE
)
104 o
->flags
|= THEY_HAVE
;
105 for (parents
= ((struct commit
*)o
)->parents
;
107 parents
= parents
->next
)
108 parents
->item
->object
.flags
|= THEY_HAVE
;
110 memcpy(has_sha1
[nr_has
++], sha1
, 20);
115 static int get_common_commits(void)
117 static char line
[1000];
118 unsigned char sha1
[20];
121 track_object_refs
= 0;
122 save_commit_buffer
= 0;
125 len
= packet_read_line(0, line
, sizeof(line
));
129 if (multi_ack
|| nr_has
== 0)
130 packet_write(1, "NAK\n");
133 len
= strip(line
, len
);
134 if (!strncmp(line
, "have ", 5)) {
135 if (got_sha1(line
+5, sha1
) &&
136 (multi_ack
|| nr_has
== 1))
137 packet_write(1, "ACK %s%s\n",
139 multi_ack
&& nr_has
< MAX_HAS
?
143 if (!strcmp(line
, "done")) {
146 packet_write(1, "NAK\n");
149 die("git-upload-pack: expected SHA1 list, got '%s'", line
);
153 static int receive_needs(void)
155 static char line
[1000];
160 unsigned char dummy
[20], *sha1_buf
;
161 len
= packet_read_line(0, line
, sizeof(line
));
167 if (needs
== MAX_NEEDS
) {
169 "warning: supporting only a max of %d requests. "
170 "sending everything instead.\n",
173 else if (needs
< MAX_NEEDS
)
174 sha1_buf
= needs_sha1
[needs
];
176 if (strncmp("want ", line
, 5) || get_sha1_hex(line
+5, sha1_buf
))
177 die("git-upload-pack: protocol error, "
178 "expected to get sha, not '%s'", line
);
180 if (strstr(line
+45, "multi_ack"))
187 static int send_ref(const char *refname
, const unsigned char *sha1
)
189 struct object
*o
= parse_object(sha1
);
191 packet_write(1, "%s %s\n", sha1_to_hex(sha1
), refname
);
192 if (o
->type
== tag_type
) {
194 packet_write(1, "%s %s^{}\n", sha1_to_hex(o
->sha1
), refname
);
199 static int upload_pack(void)
203 for_each_ref(send_ref
);
205 nr_needs
= receive_needs();
208 get_common_commits();
213 int main(int argc
, char **argv
)
219 for (i
= 1; i
< argc
; i
++) {
224 if (!strcmp(arg
, "--strict")) {
228 if (!strncmp(arg
, "--timeout=", 10)) {
229 timeout
= atoi(arg
+10);
232 if (!strcmp(arg
, "--")) {
239 usage(upload_pack_usage
);
242 /* chdir to the directory. If that fails, try appending ".git" */
243 if (chdir(dir
) < 0) {
244 if (strict
|| chdir(mkpath("%s.git", dir
)) < 0)
245 die("git-upload-pack unable to chdir to %s", dir
);
250 if (access("objects", X_OK
) || access("refs", X_OK
))
251 die("git-upload-pack: %s doesn't seem to be a git archive", dir
);