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ae4efe1957
The remote helper interface now supports the push capability, which can be used to ask the implementation to push one or more specs to the remote repository. For remote-curl we implement this by calling the existing WebDAV based git-http-push executable. Internally the helper interface uses the push_refs transport hook so that the complexity of the refspec parsing and matching can be reused between remote implementations. When possible however the helper protocol uses source ref name rather than the source SHA-1, thereby allowing the helper to access this name if it is useful. >From Clemens Buchacher <drizzd@aon.at>: update http tests according to remote-curl capabilities o Pushing packed refs is now fixed. o The transport helper fails if refs are already up-to-date. Add a test for that. o The transport helper will notice if refs are already up-to-date. We therefore need to update server info in the unpacked-refs test. o The transport helper will purge deleted branches automatically. o Use a variable ($ORIG_HEAD) instead of full SHA-1 name. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Shawn O. Pearce <spearce@spearce.org> CC: Daniel Barkalow <barkalow@iabervon.org> CC: Mike Hommey <mh@glandium.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
356 lines
7.2 KiB
C
356 lines
7.2 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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static struct remote *remote;
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static const char *url;
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static struct walker *walker;
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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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};
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static struct options options;
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static void init_walker(void)
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{
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if (!walker)
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walker = get_http_walker(url, remote);
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}
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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 1 /* TODO implement later */;
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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 1 /* TODO implement later */;
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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 1 /* TODO implement later */;
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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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static struct ref *get_refs(void)
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{
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struct strbuf buffer = STRBUF_INIT;
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char *data, *start, *mid;
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char *ref_name;
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char *refs_url;
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int i = 0;
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int http_ret;
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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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refs_url = xmalloc(strlen(url) + 11);
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sprintf(refs_url, "%s/info/refs", url);
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init_walker();
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http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
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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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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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data = buffer.buf;
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start = NULL;
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mid = data;
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while (i < buffer.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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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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strbuf_release(&buffer);
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ref = alloc_ref("HEAD");
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if (!walker->fetch_ref(walker, 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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strbuf_release(&buffer);
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free(refs_url);
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return refs;
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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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static int fetch_dumb(int nr_heads, struct ref **to_fetch)
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{
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char **targets = xmalloc(nr_heads * sizeof(char*));
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int ret, i;
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for (i = 0; i < nr_heads; i++)
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targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
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init_walker();
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walker->get_all = 1;
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walker->get_tree = 1;
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walker->get_history = 1;
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walker->get_verbosely = options.verbosity >= 3;
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walker->get_recover = 0;
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ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
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for (i = 0; i < nr_heads; i++)
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free(targets[i]);
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free(targets);
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return ret ? error("Fetch failed.") : 0;
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}
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static void parse_fetch(struct strbuf *buf)
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{
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struct ref **to_fetch = NULL;
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struct ref *list_head = NULL;
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struct ref **list = &list_head;
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int alloc_heads = 0, nr_heads = 0;
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do {
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if (!prefixcmp(buf->buf, "fetch ")) {
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char *p = buf->buf + strlen("fetch ");
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char *name;
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struct ref *ref;
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unsigned char old_sha1[20];
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if (strlen(p) < 40 || get_sha1_hex(p, old_sha1))
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die("protocol error: expected sha/ref, got %s'", p);
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if (p[40] == ' ')
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name = p + 41;
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else if (!p[40])
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name = "";
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else
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die("protocol error: expected sha/ref, got %s'", p);
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ref = alloc_ref(name);
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hashcpy(ref->old_sha1, old_sha1);
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*list = ref;
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list = &ref->next;
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ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
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to_fetch[nr_heads++] = ref;
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}
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else
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die("http transport does not support %s", buf->buf);
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strbuf_reset(buf);
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if (strbuf_getline(buf, stdin, '\n') == EOF)
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return;
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if (!*buf->buf)
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break;
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} while (1);
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if (fetch_dumb(nr_heads, to_fetch))
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exit(128); /* error already reported */
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free_refs(list_head);
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free(to_fetch);
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printf("\n");
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fflush(stdout);
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strbuf_reset(buf);
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}
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static int push_dav(int nr_spec, char **specs)
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{
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const char **argv = xmalloc((10 + nr_spec) * sizeof(char*));
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int argc = 0, i;
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argv[argc++] = "http-push";
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argv[argc++] = "--helper-status";
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if (options.dry_run)
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argv[argc++] = "--dry-run";
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if (options.verbosity > 1)
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argv[argc++] = "--verbose";
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argv[argc++] = url;
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for (i = 0; i < nr_spec; i++)
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argv[argc++] = specs[i];
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argv[argc++] = NULL;
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if (run_command_v_opt(argv, RUN_GIT_CMD))
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die("git-%s failed", argv[0]);
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free(argv);
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return 0;
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}
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static void parse_push(struct strbuf *buf)
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{
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char **specs = NULL;
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int alloc_spec = 0, nr_spec = 0, i;
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do {
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if (!prefixcmp(buf->buf, "push ")) {
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ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
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specs[nr_spec++] = xstrdup(buf->buf + 5);
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}
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else
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die("http transport does not support %s", buf->buf);
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strbuf_reset(buf);
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if (strbuf_getline(buf, stdin, '\n') == EOF)
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return;
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if (!*buf->buf)
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break;
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} while (1);
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if (push_dav(nr_spec, specs))
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exit(128); /* error already reported */
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for (i = 0; i < nr_spec; i++)
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free(specs[i]);
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free(specs);
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printf("\n");
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fflush(stdout);
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}
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int main(int argc, const char **argv)
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{
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struct strbuf buf = STRBUF_INIT;
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git_extract_argv0_path(argv[0]);
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setup_git_directory();
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if (argc < 2) {
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fprintf(stderr, "Remote needed\n");
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return 1;
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}
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options.verbosity = 1;
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options.progress = !!isatty(2);
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remote = remote_get(argv[1]);
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if (argc > 2) {
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url = argv[2];
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} else {
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url = remote->url[0];
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}
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do {
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if (strbuf_getline(&buf, stdin, '\n') == EOF)
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break;
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if (!prefixcmp(buf.buf, "fetch ")) {
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parse_fetch(&buf);
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} else if (!strcmp(buf.buf, "list") || !prefixcmp(buf.buf, "list ")) {
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output_refs(get_refs());
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} else if (!prefixcmp(buf.buf, "push ")) {
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parse_push(&buf);
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} else if (!prefixcmp(buf.buf, "option ")) {
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char *name = buf.buf + strlen("option ");
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char *value = strchr(name, ' ');
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int result;
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if (value)
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*value++ = '\0';
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else
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value = "true";
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result = set_option(name, value);
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if (!result)
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printf("ok\n");
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else if (result < 0)
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printf("error invalid value\n");
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else
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printf("unsupported\n");
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fflush(stdout);
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} else if (!strcmp(buf.buf, "capabilities")) {
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printf("fetch\n");
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printf("option\n");
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printf("push\n");
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printf("\n");
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fflush(stdout);
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} else {
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return 1;
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}
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strbuf_reset(&buf);
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} while (1);
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return 0;
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}
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