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remote-curl: add 'get' capability

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A future change will want a way to download a file over HTTP(S) using
the simplest of download mechanisms. We do not want to assume that the
server on the other side understands anything about the Git protocol but
could be a simple static web server.

Create the new 'get' capability for the remote helpers which advertises
that the 'get' command is avalable. A caller can send a line containing
'get <url> <path>' to download the file at <url> into the file at
<path>.

Reviewed-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2022-08-09 13:11:39 +00:00
committed by Junio C Hamano
parent 6a475b71f8
commit b5624a4474
3 changed files with 74 additions and 0 deletions
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28
remote-curl.c
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@ -1286,6 +1286,29 @@ static void parse_fetch(struct strbuf *buf)
strbuf_reset(buf);
}
static void parse_get(const char *arg)
{
struct strbuf url = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
const char *space;
space = strchr(arg, ' ');
if (!space)
die(_("protocol error: expected '<url> <path>', missing space"));
strbuf_add(&url, arg, space - arg);
strbuf_addstr(&path, space + 1);
if (http_get_file(url.buf, path.buf, NULL))
die(_("failed to download file at URL '%s'"), url.buf);
strbuf_release(&url);
strbuf_release(&path);
printf("\n");
fflush(stdout);
}
static int push_dav(int nr_spec, const char **specs)
{
struct child_process child = CHILD_PROCESS_INIT;
@ -1564,9 +1587,14 @@ int cmd_main(int argc, const char **argv)
printf("unsupported\n");
fflush(stdout);
} else if (skip_prefix(buf.buf, "get ", &arg)) {
parse_get(arg);
fflush(stdout);
} else if (!strcmp(buf.buf, "capabilities")) {
printf("stateless-connect\n");
printf("fetch\n");
printf("get\n");
printf("option\n");
printf("push\n");
printf("check-connectivity\n");