mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
![Shawn O. Pearce](/assets/img/avatar_default.png)
Some HTTP servers try to use gzip compression on the /info/refs request to save transfer bandwidth. Repositories with many tags may find the /info/refs request can be gzipped to be 50% of the original size due to the few but often repeated bytes used (hex SHA-1 and commonly digits in tag names). For most HTTP requests enable "Accept-Encoding: gzip" ensuring the /info/refs payload can use this encoding format. Only request gzip encoding from servers. Although deflate is supported by libcurl, most servers have standardized on gzip encoding for compression as that is what most browsers support. Asking for deflate increases request sizes by a few bytes, but is unlikely to ever be used by a server. Disable the Accept-Encoding header on probe RPCs as response bodies are supposed to be exactly 4 bytes long, "0000". The HTTP headers requesting and indicating compression use more space than the data transferred in the body. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
942 lines
22 KiB
C
942 lines
22 KiB
C
#include "cache.h"
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#include "remote.h"
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#include "strbuf.h"
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#include "walker.h"
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#include "http.h"
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#include "exec_cmd.h"
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#include "run-command.h"
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#include "pkt-line.h"
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#include "sideband.h"
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static struct remote *remote;
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static const char *url; /* always ends with a trailing slash */
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struct options {
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int verbosity;
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unsigned long depth;
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unsigned progress : 1,
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followtags : 1,
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dry_run : 1,
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thin : 1;
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};
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static struct options options;
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static int set_option(const char *name, const char *value)
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{
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if (!strcmp(name, "verbosity")) {
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char *end;
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int v = strtol(value, &end, 10);
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if (value == end || *end)
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return -1;
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options.verbosity = v;
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return 0;
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}
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else if (!strcmp(name, "progress")) {
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if (!strcmp(value, "true"))
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options.progress = 1;
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else if (!strcmp(value, "false"))
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options.progress = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "depth")) {
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char *end;
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unsigned long v = strtoul(value, &end, 10);
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if (value == end || *end)
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return -1;
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options.depth = v;
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return 0;
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}
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else if (!strcmp(name, "followtags")) {
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if (!strcmp(value, "true"))
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options.followtags = 1;
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else if (!strcmp(value, "false"))
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options.followtags = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "dry-run")) {
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if (!strcmp(value, "true"))
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options.dry_run = 1;
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else if (!strcmp(value, "false"))
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options.dry_run = 0;
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else
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return -1;
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return 0;
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}
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else {
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return 1 /* unsupported */;
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}
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}
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struct discovery {
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const char *service;
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char *buf_alloc;
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char *buf;
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size_t len;
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unsigned proto_git : 1;
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};
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static struct discovery *last_discovery;
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static void free_discovery(struct discovery *d)
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{
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if (d) {
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if (d == last_discovery)
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last_discovery = NULL;
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free(d->buf_alloc);
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free(d);
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}
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}
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static struct discovery* discover_refs(const char *service)
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{
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struct strbuf buffer = STRBUF_INIT;
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struct discovery *last = last_discovery;
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char *refs_url;
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int http_ret, is_http = 0, proto_git_candidate = 1;
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if (last && !strcmp(service, last->service))
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return last;
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free_discovery(last);
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strbuf_addf(&buffer, "%sinfo/refs", url);
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if (!prefixcmp(url, "http://") || !prefixcmp(url, "https://")) {
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is_http = 1;
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if (!strchr(url, '?'))
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strbuf_addch(&buffer, '?');
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else
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strbuf_addch(&buffer, '&');
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strbuf_addf(&buffer, "service=%s", service);
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}
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refs_url = strbuf_detach(&buffer, NULL);
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http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
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/* try again with "plain" url (no ? or & appended) */
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if (http_ret != HTTP_OK && http_ret != HTTP_NOAUTH) {
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free(refs_url);
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strbuf_reset(&buffer);
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proto_git_candidate = 0;
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strbuf_addf(&buffer, "%sinfo/refs", url);
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refs_url = strbuf_detach(&buffer, NULL);
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http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
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}
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switch (http_ret) {
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case HTTP_OK:
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break;
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case HTTP_MISSING_TARGET:
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die("%s not found: did you run git update-server-info on the"
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" server?", refs_url);
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case HTTP_NOAUTH:
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die("Authentication failed");
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default:
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http_error(refs_url, http_ret);
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die("HTTP request failed");
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}
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last= xcalloc(1, sizeof(*last_discovery));
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last->service = service;
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last->buf_alloc = strbuf_detach(&buffer, &last->len);
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last->buf = last->buf_alloc;
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if (is_http && proto_git_candidate
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&& 5 <= last->len && last->buf[4] == '#') {
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/* smart HTTP response; validate that the service
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* pkt-line matches our request.
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*/
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struct strbuf exp = STRBUF_INIT;
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if (packet_get_line(&buffer, &last->buf, &last->len) <= 0)
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die("%s has invalid packet header", refs_url);
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if (buffer.len && buffer.buf[buffer.len - 1] == '\n')
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strbuf_setlen(&buffer, buffer.len - 1);
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strbuf_addf(&exp, "# service=%s", service);
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if (strbuf_cmp(&exp, &buffer))
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die("invalid server response; got '%s'", buffer.buf);
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strbuf_release(&exp);
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/* The header can include additional metadata lines, up
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* until a packet flush marker. Ignore these now, but
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* in the future we might start to scan them.
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*/
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strbuf_reset(&buffer);
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while (packet_get_line(&buffer, &last->buf, &last->len) > 0)
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strbuf_reset(&buffer);
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last->proto_git = 1;
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}
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free(refs_url);
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strbuf_release(&buffer);
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last_discovery = last;
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return last;
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}
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static int write_discovery(int in, int out, void *data)
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{
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struct discovery *heads = data;
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int err = 0;
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if (write_in_full(out, heads->buf, heads->len) != heads->len)
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err = 1;
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close(out);
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return err;
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}
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static struct ref *parse_git_refs(struct discovery *heads, int for_push)
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{
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struct ref *list = NULL;
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struct async async;
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memset(&async, 0, sizeof(async));
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async.proc = write_discovery;
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async.data = heads;
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async.out = -1;
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if (start_async(&async))
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die("cannot start thread to parse advertised refs");
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get_remote_heads(async.out, &list,
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for_push ? REF_NORMAL : 0, NULL);
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close(async.out);
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if (finish_async(&async))
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die("ref parsing thread failed");
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return list;
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}
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static struct ref *parse_info_refs(struct discovery *heads)
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{
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char *data, *start, *mid;
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char *ref_name;
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int i = 0;
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struct ref *refs = NULL;
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struct ref *ref = NULL;
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struct ref *last_ref = NULL;
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data = heads->buf;
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start = NULL;
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mid = data;
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while (i < heads->len) {
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if (!start) {
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start = &data[i];
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}
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if (data[i] == '\t')
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mid = &data[i];
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if (data[i] == '\n') {
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if (mid - start != 40)
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die("%sinfo/refs not valid: is this a git repository?", url);
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data[i] = 0;
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ref_name = mid + 1;
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ref = xmalloc(sizeof(struct ref) +
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strlen(ref_name) + 1);
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memset(ref, 0, sizeof(struct ref));
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strcpy(ref->name, ref_name);
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get_sha1_hex(start, ref->old_sha1);
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if (!refs)
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refs = ref;
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if (last_ref)
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last_ref->next = ref;
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last_ref = ref;
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start = NULL;
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}
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i++;
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}
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ref = alloc_ref("HEAD");
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if (!http_fetch_ref(url, ref) &&
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!resolve_remote_symref(ref, refs)) {
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ref->next = refs;
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refs = ref;
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} else {
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free(ref);
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}
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return refs;
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}
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static struct ref *get_refs(int for_push)
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{
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struct discovery *heads;
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if (for_push)
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heads = discover_refs("git-receive-pack");
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else
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heads = discover_refs("git-upload-pack");
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if (heads->proto_git)
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return parse_git_refs(heads, for_push);
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return parse_info_refs(heads);
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}
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static void output_refs(struct ref *refs)
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{
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struct ref *posn;
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for (posn = refs; posn; posn = posn->next) {
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if (posn->symref)
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printf("@%s %s\n", posn->symref, posn->name);
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else
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printf("%s %s\n", sha1_to_hex(posn->old_sha1), posn->name);
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}
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printf("\n");
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fflush(stdout);
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free_refs(refs);
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}
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struct rpc_state {
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const char *service_name;
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const char **argv;
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struct strbuf *stdin_preamble;
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char *service_url;
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char *hdr_content_type;
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char *hdr_accept;
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char *buf;
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size_t alloc;
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size_t len;
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size_t pos;
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int in;
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int out;
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struct strbuf result;
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unsigned gzip_request : 1;
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unsigned initial_buffer : 1;
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};
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static size_t rpc_out(void *ptr, size_t eltsize,
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size_t nmemb, void *buffer_)
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{
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size_t max = eltsize * nmemb;
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struct rpc_state *rpc = buffer_;
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size_t avail = rpc->len - rpc->pos;
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if (!avail) {
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rpc->initial_buffer = 0;
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avail = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
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if (!avail)
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return 0;
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rpc->pos = 0;
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rpc->len = avail;
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}
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if (max < avail)
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avail = max;
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memcpy(ptr, rpc->buf + rpc->pos, avail);
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rpc->pos += avail;
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return avail;
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}
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#ifndef NO_CURL_IOCTL
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static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
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{
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struct rpc_state *rpc = clientp;
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switch (cmd) {
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case CURLIOCMD_NOP:
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return CURLIOE_OK;
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case CURLIOCMD_RESTARTREAD:
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if (rpc->initial_buffer) {
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rpc->pos = 0;
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return CURLIOE_OK;
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}
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fprintf(stderr, "Unable to rewind rpc post data - try increasing http.postBuffer\n");
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return CURLIOE_FAILRESTART;
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default:
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return CURLIOE_UNKNOWNCMD;
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}
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}
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#endif
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static size_t rpc_in(char *ptr, size_t eltsize,
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size_t nmemb, void *buffer_)
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{
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size_t size = eltsize * nmemb;
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struct rpc_state *rpc = buffer_;
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write_or_die(rpc->in, ptr, size);
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return size;
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}
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static int run_slot(struct active_request_slot *slot)
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{
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int err;
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struct slot_results results;
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slot->results = &results;
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slot->curl_result = curl_easy_perform(slot->curl);
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finish_active_slot(slot);
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err = handle_curl_result(slot);
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if (err != HTTP_OK && err != HTTP_REAUTH) {
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error("RPC failed; result=%d, HTTP code = %ld",
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results.curl_result, results.http_code);
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}
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return err;
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}
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static int probe_rpc(struct rpc_state *rpc)
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{
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struct active_request_slot *slot;
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struct curl_slist *headers = NULL;
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struct strbuf buf = STRBUF_INIT;
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int err;
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slot = get_active_slot();
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headers = curl_slist_append(headers, rpc->hdr_content_type);
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headers = curl_slist_append(headers, rpc->hdr_accept);
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curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
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curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
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curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
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curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
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curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
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curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
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curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
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err = run_slot(slot);
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curl_slist_free_all(headers);
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strbuf_release(&buf);
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return err;
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}
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static int post_rpc(struct rpc_state *rpc)
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{
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struct active_request_slot *slot;
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struct curl_slist *headers = NULL;
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int use_gzip = rpc->gzip_request;
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char *gzip_body = NULL;
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int err, large_request = 0;
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/* Try to load the entire request, if we can fit it into the
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* allocated buffer space we can use HTTP/1.0 and avoid the
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* chunked encoding mess.
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*/
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while (1) {
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size_t left = rpc->alloc - rpc->len;
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char *buf = rpc->buf + rpc->len;
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int n;
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if (left < LARGE_PACKET_MAX) {
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large_request = 1;
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use_gzip = 0;
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break;
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}
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n = packet_read_line(rpc->out, buf, left);
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if (!n)
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break;
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rpc->len += n;
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}
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if (large_request) {
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do {
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err = probe_rpc(rpc);
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} while (err == HTTP_REAUTH);
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if (err != HTTP_OK)
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return -1;
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}
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slot = get_active_slot();
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curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
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curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
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curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
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curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
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headers = curl_slist_append(headers, rpc->hdr_content_type);
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headers = curl_slist_append(headers, rpc->hdr_accept);
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headers = curl_slist_append(headers, "Expect:");
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if (large_request) {
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/* The request body is large and the size cannot be predicted.
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* We must use chunked encoding to send it.
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*/
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headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
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rpc->initial_buffer = 1;
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curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
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curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
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#ifndef NO_CURL_IOCTL
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curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
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curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
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#endif
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if (options.verbosity > 1) {
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fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
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fflush(stderr);
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}
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} else if (use_gzip && 1024 < rpc->len) {
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/* The client backend isn't giving us compressed data so
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* we can try to deflate it ourselves, this may save on.
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* the transfer time.
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*/
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size_t size;
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git_zstream stream;
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int ret;
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memset(&stream, 0, sizeof(stream));
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git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
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size = git_deflate_bound(&stream, rpc->len);
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gzip_body = xmalloc(size);
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stream.next_in = (unsigned char *)rpc->buf;
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stream.avail_in = rpc->len;
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stream.next_out = (unsigned char *)gzip_body;
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stream.avail_out = size;
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ret = git_deflate(&stream, Z_FINISH);
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if (ret != Z_STREAM_END)
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die("cannot deflate request; zlib deflate error %d", ret);
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|
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ret = git_deflate_end_gently(&stream);
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if (ret != Z_OK)
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die("cannot deflate request; zlib end error %d", ret);
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size = stream.total_out;
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headers = curl_slist_append(headers, "Content-Encoding: gzip");
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);
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|
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if (options.verbosity > 1) {
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fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
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rpc->service_name,
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(unsigned long)rpc->len, (unsigned long)size);
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fflush(stderr);
|
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}
|
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} else {
|
|
/* We know the complete request size in advance, use the
|
|
* more normal Content-Length approach.
|
|
*/
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
|
|
if (options.verbosity > 1) {
|
|
fprintf(stderr, "POST %s (%lu bytes)\n",
|
|
rpc->service_name, (unsigned long)rpc->len);
|
|
fflush(stderr);
|
|
}
|
|
}
|
|
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
|
|
curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
|
|
|
|
do {
|
|
err = run_slot(slot);
|
|
} while (err == HTTP_REAUTH && !large_request && !use_gzip);
|
|
if (err != HTTP_OK)
|
|
err = -1;
|
|
|
|
curl_slist_free_all(headers);
|
|
free(gzip_body);
|
|
return err;
|
|
}
|
|
|
|
static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
|
|
{
|
|
const char *svc = rpc->service_name;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
struct strbuf *preamble = rpc->stdin_preamble;
|
|
struct child_process client;
|
|
int err = 0;
|
|
|
|
memset(&client, 0, sizeof(client));
|
|
client.in = -1;
|
|
client.out = -1;
|
|
client.git_cmd = 1;
|
|
client.argv = rpc->argv;
|
|
if (start_command(&client))
|
|
exit(1);
|
|
if (preamble)
|
|
write_or_die(client.in, preamble->buf, preamble->len);
|
|
if (heads)
|
|
write_or_die(client.in, heads->buf, heads->len);
|
|
|
|
rpc->alloc = http_post_buffer;
|
|
rpc->buf = xmalloc(rpc->alloc);
|
|
rpc->in = client.in;
|
|
rpc->out = client.out;
|
|
strbuf_init(&rpc->result, 0);
|
|
|
|
strbuf_addf(&buf, "%s%s", url, svc);
|
|
rpc->service_url = strbuf_detach(&buf, NULL);
|
|
|
|
strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
|
|
rpc->hdr_content_type = strbuf_detach(&buf, NULL);
|
|
|
|
strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
|
|
rpc->hdr_accept = strbuf_detach(&buf, NULL);
|
|
|
|
while (!err) {
|
|
int n = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
|
|
if (!n)
|
|
break;
|
|
rpc->pos = 0;
|
|
rpc->len = n;
|
|
err |= post_rpc(rpc);
|
|
}
|
|
|
|
close(client.in);
|
|
client.in = -1;
|
|
if (!err) {
|
|
strbuf_read(&rpc->result, client.out, 0);
|
|
} else {
|
|
char buf[4096];
|
|
for (;;)
|
|
if (xread(client.out, buf, sizeof(buf)) <= 0)
|
|
break;
|
|
}
|
|
|
|
close(client.out);
|
|
client.out = -1;
|
|
|
|
err |= finish_command(&client);
|
|
free(rpc->service_url);
|
|
free(rpc->hdr_content_type);
|
|
free(rpc->hdr_accept);
|
|
free(rpc->buf);
|
|
strbuf_release(&buf);
|
|
return err;
|
|
}
|
|
|
|
static int fetch_dumb(int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct walker *walker;
|
|
char **targets = xmalloc(nr_heads * sizeof(char*));
|
|
int ret, i;
|
|
|
|
if (options.depth)
|
|
die("dumb http transport does not support --depth");
|
|
for (i = 0; i < nr_heads; i++)
|
|
targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
|
|
|
|
walker = get_http_walker(url);
|
|
walker->get_all = 1;
|
|
walker->get_tree = 1;
|
|
walker->get_history = 1;
|
|
walker->get_verbosely = options.verbosity >= 3;
|
|
walker->get_recover = 0;
|
|
ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
|
|
walker_free(walker);
|
|
|
|
for (i = 0; i < nr_heads; i++)
|
|
free(targets[i]);
|
|
free(targets);
|
|
|
|
return ret ? error("Fetch failed.") : 0;
|
|
}
|
|
|
|
static int fetch_git(struct discovery *heads,
|
|
int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct rpc_state rpc;
|
|
struct strbuf preamble = STRBUF_INIT;
|
|
char *depth_arg = NULL;
|
|
int argc = 0, i, err;
|
|
const char *argv[15];
|
|
|
|
argv[argc++] = "fetch-pack";
|
|
argv[argc++] = "--stateless-rpc";
|
|
argv[argc++] = "--stdin";
|
|
argv[argc++] = "--lock-pack";
|
|
if (options.followtags)
|
|
argv[argc++] = "--include-tag";
|
|
if (options.thin)
|
|
argv[argc++] = "--thin";
|
|
if (options.verbosity >= 3) {
|
|
argv[argc++] = "-v";
|
|
argv[argc++] = "-v";
|
|
}
|
|
if (!options.progress)
|
|
argv[argc++] = "--no-progress";
|
|
if (options.depth) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addf(&buf, "--depth=%lu", options.depth);
|
|
depth_arg = strbuf_detach(&buf, NULL);
|
|
argv[argc++] = depth_arg;
|
|
}
|
|
argv[argc++] = url;
|
|
argv[argc++] = NULL;
|
|
|
|
for (i = 0; i < nr_heads; i++) {
|
|
struct ref *ref = to_fetch[i];
|
|
if (!ref->name || !*ref->name)
|
|
die("cannot fetch by sha1 over smart http");
|
|
packet_buf_write(&preamble, "%s\n", ref->name);
|
|
}
|
|
packet_buf_flush(&preamble);
|
|
|
|
memset(&rpc, 0, sizeof(rpc));
|
|
rpc.service_name = "git-upload-pack",
|
|
rpc.argv = argv;
|
|
rpc.stdin_preamble = &preamble;
|
|
rpc.gzip_request = 1;
|
|
|
|
err = rpc_service(&rpc, heads);
|
|
if (rpc.result.len)
|
|
safe_write(1, rpc.result.buf, rpc.result.len);
|
|
strbuf_release(&rpc.result);
|
|
strbuf_release(&preamble);
|
|
free(depth_arg);
|
|
return err;
|
|
}
|
|
|
|
static int fetch(int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct discovery *d = discover_refs("git-upload-pack");
|
|
if (d->proto_git)
|
|
return fetch_git(d, nr_heads, to_fetch);
|
|
else
|
|
return fetch_dumb(nr_heads, to_fetch);
|
|
}
|
|
|
|
static void parse_fetch(struct strbuf *buf)
|
|
{
|
|
struct ref **to_fetch = NULL;
|
|
struct ref *list_head = NULL;
|
|
struct ref **list = &list_head;
|
|
int alloc_heads = 0, nr_heads = 0;
|
|
|
|
do {
|
|
if (!prefixcmp(buf->buf, "fetch ")) {
|
|
char *p = buf->buf + strlen("fetch ");
|
|
char *name;
|
|
struct ref *ref;
|
|
unsigned char old_sha1[20];
|
|
|
|
if (strlen(p) < 40 || get_sha1_hex(p, old_sha1))
|
|
die("protocol error: expected sha/ref, got %s'", p);
|
|
if (p[40] == ' ')
|
|
name = p + 41;
|
|
else if (!p[40])
|
|
name = "";
|
|
else
|
|
die("protocol error: expected sha/ref, got %s'", p);
|
|
|
|
ref = alloc_ref(name);
|
|
hashcpy(ref->old_sha1, old_sha1);
|
|
|
|
*list = ref;
|
|
list = &ref->next;
|
|
|
|
ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
|
|
to_fetch[nr_heads++] = ref;
|
|
}
|
|
else
|
|
die("http transport does not support %s", buf->buf);
|
|
|
|
strbuf_reset(buf);
|
|
if (strbuf_getline(buf, stdin, '\n') == EOF)
|
|
return;
|
|
if (!*buf->buf)
|
|
break;
|
|
} while (1);
|
|
|
|
if (fetch(nr_heads, to_fetch))
|
|
exit(128); /* error already reported */
|
|
free_refs(list_head);
|
|
free(to_fetch);
|
|
|
|
printf("\n");
|
|
fflush(stdout);
|
|
strbuf_reset(buf);
|
|
}
|
|
|
|
static int push_dav(int nr_spec, char **specs)
|
|
{
|
|
const char **argv = xmalloc((10 + nr_spec) * sizeof(char*));
|
|
int argc = 0, i;
|
|
|
|
argv[argc++] = "http-push";
|
|
argv[argc++] = "--helper-status";
|
|
if (options.dry_run)
|
|
argv[argc++] = "--dry-run";
|
|
if (options.verbosity > 1)
|
|
argv[argc++] = "--verbose";
|
|
argv[argc++] = url;
|
|
for (i = 0; i < nr_spec; i++)
|
|
argv[argc++] = specs[i];
|
|
argv[argc++] = NULL;
|
|
|
|
if (run_command_v_opt(argv, RUN_GIT_CMD))
|
|
die("git-%s failed", argv[0]);
|
|
free(argv);
|
|
return 0;
|
|
}
|
|
|
|
static int push_git(struct discovery *heads, int nr_spec, char **specs)
|
|
{
|
|
struct rpc_state rpc;
|
|
const char **argv;
|
|
int argc = 0, i, err;
|
|
|
|
argv = xmalloc((10 + nr_spec) * sizeof(char*));
|
|
argv[argc++] = "send-pack";
|
|
argv[argc++] = "--stateless-rpc";
|
|
argv[argc++] = "--helper-status";
|
|
if (options.thin)
|
|
argv[argc++] = "--thin";
|
|
if (options.dry_run)
|
|
argv[argc++] = "--dry-run";
|
|
if (options.verbosity == 0)
|
|
argv[argc++] = "--quiet";
|
|
else if (options.verbosity > 1)
|
|
argv[argc++] = "--verbose";
|
|
argv[argc++] = options.progress ? "--progress" : "--no-progress";
|
|
argv[argc++] = url;
|
|
for (i = 0; i < nr_spec; i++)
|
|
argv[argc++] = specs[i];
|
|
argv[argc++] = NULL;
|
|
|
|
memset(&rpc, 0, sizeof(rpc));
|
|
rpc.service_name = "git-receive-pack",
|
|
rpc.argv = argv;
|
|
|
|
err = rpc_service(&rpc, heads);
|
|
if (rpc.result.len)
|
|
safe_write(1, rpc.result.buf, rpc.result.len);
|
|
strbuf_release(&rpc.result);
|
|
free(argv);
|
|
return err;
|
|
}
|
|
|
|
static int push(int nr_spec, char **specs)
|
|
{
|
|
struct discovery *heads = discover_refs("git-receive-pack");
|
|
int ret;
|
|
|
|
if (heads->proto_git)
|
|
ret = push_git(heads, nr_spec, specs);
|
|
else
|
|
ret = push_dav(nr_spec, specs);
|
|
free_discovery(heads);
|
|
return ret;
|
|
}
|
|
|
|
static void parse_push(struct strbuf *buf)
|
|
{
|
|
char **specs = NULL;
|
|
int alloc_spec = 0, nr_spec = 0, i, ret;
|
|
|
|
do {
|
|
if (!prefixcmp(buf->buf, "push ")) {
|
|
ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
|
|
specs[nr_spec++] = xstrdup(buf->buf + 5);
|
|
}
|
|
else
|
|
die("http transport does not support %s", buf->buf);
|
|
|
|
strbuf_reset(buf);
|
|
if (strbuf_getline(buf, stdin, '\n') == EOF)
|
|
goto free_specs;
|
|
if (!*buf->buf)
|
|
break;
|
|
} while (1);
|
|
|
|
ret = push(nr_spec, specs);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
|
|
if (ret)
|
|
exit(128); /* error already reported */
|
|
|
|
free_specs:
|
|
for (i = 0; i < nr_spec; i++)
|
|
free(specs[i]);
|
|
free(specs);
|
|
}
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int nongit;
|
|
|
|
git_extract_argv0_path(argv[0]);
|
|
setup_git_directory_gently(&nongit);
|
|
if (argc < 2) {
|
|
fprintf(stderr, "Remote needed\n");
|
|
return 1;
|
|
}
|
|
|
|
options.verbosity = 1;
|
|
options.progress = !!isatty(2);
|
|
options.thin = 1;
|
|
|
|
remote = remote_get(argv[1]);
|
|
|
|
if (argc > 2) {
|
|
end_url_with_slash(&buf, argv[2]);
|
|
} else {
|
|
end_url_with_slash(&buf, remote->url[0]);
|
|
}
|
|
|
|
url = strbuf_detach(&buf, NULL);
|
|
|
|
http_init(remote, url, 0);
|
|
|
|
do {
|
|
if (strbuf_getline(&buf, stdin, '\n') == EOF) {
|
|
if (ferror(stdin))
|
|
fprintf(stderr, "Error reading command stream\n");
|
|
else
|
|
fprintf(stderr, "Unexpected end of command stream\n");
|
|
return 1;
|
|
}
|
|
if (buf.len == 0)
|
|
break;
|
|
if (!prefixcmp(buf.buf, "fetch ")) {
|
|
if (nongit)
|
|
die("Fetch attempted without a local repo");
|
|
parse_fetch(&buf);
|
|
|
|
} else if (!strcmp(buf.buf, "list") || !prefixcmp(buf.buf, "list ")) {
|
|
int for_push = !!strstr(buf.buf + 4, "for-push");
|
|
output_refs(get_refs(for_push));
|
|
|
|
} else if (!prefixcmp(buf.buf, "push ")) {
|
|
parse_push(&buf);
|
|
|
|
} else if (!prefixcmp(buf.buf, "option ")) {
|
|
char *name = buf.buf + strlen("option ");
|
|
char *value = strchr(name, ' ');
|
|
int result;
|
|
|
|
if (value)
|
|
*value++ = '\0';
|
|
else
|
|
value = "true";
|
|
|
|
result = set_option(name, value);
|
|
if (!result)
|
|
printf("ok\n");
|
|
else if (result < 0)
|
|
printf("error invalid value\n");
|
|
else
|
|
printf("unsupported\n");
|
|
fflush(stdout);
|
|
|
|
} else if (!strcmp(buf.buf, "capabilities")) {
|
|
printf("fetch\n");
|
|
printf("option\n");
|
|
printf("push\n");
|
|
printf("\n");
|
|
fflush(stdout);
|
|
} else {
|
|
fprintf(stderr, "Unknown command '%s'\n", buf.buf);
|
|
return 1;
|
|
}
|
|
strbuf_reset(&buf);
|
|
} while (1);
|
|
|
|
http_cleanup();
|
|
|
|
return 0;
|
|
}
|