117 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			C
		
	
	
			
		
		
	
	
			117 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			C
		
	
	
| #include "cache.h"
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| #include "repository.h"
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| #include "refs.h"
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| #include "remote.h"
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| #include "strvec.h"
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| #include "ls-refs.h"
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| #include "pkt-line.h"
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| #include "config.h"
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| 
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| /*
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|  * Check if one of the prefixes is a prefix of the ref.
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|  * If no prefixes were provided, all refs match.
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|  */
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| static int ref_match(const struct strvec *prefixes, const char *refname)
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| {
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| 	int i;
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| 
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| 	if (!prefixes->nr)
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| 		return 1; /* no restriction */
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| 
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| 	for (i = 0; i < prefixes->nr; i++) {
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| 		const char *prefix = prefixes->v[i];
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| 
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| 		if (starts_with(refname, prefix))
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| 			return 1;
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| 	}
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| 
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| 	return 0;
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| }
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| 
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| struct ls_refs_data {
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| 	unsigned peel;
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| 	unsigned symrefs;
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| 	struct strvec prefixes;
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| };
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| 
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| static int send_ref(const char *refname, const struct object_id *oid,
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| 		    int flag, void *cb_data)
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| {
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| 	struct ls_refs_data *data = cb_data;
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| 	const char *refname_nons = strip_namespace(refname);
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| 	struct strbuf refline = STRBUF_INIT;
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| 
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| 	if (ref_is_hidden(refname_nons, refname))
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| 		return 0;
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| 
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| 	if (!ref_match(&data->prefixes, refname_nons))
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| 		return 0;
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| 
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| 	strbuf_addf(&refline, "%s %s", oid_to_hex(oid), refname_nons);
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| 	if (data->symrefs && flag & REF_ISSYMREF) {
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| 		struct object_id unused;
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| 		const char *symref_target = resolve_ref_unsafe(refname, 0,
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| 							       &unused,
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| 							       &flag);
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| 
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| 		if (!symref_target)
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| 			die("'%s' is a symref but it is not?", refname);
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| 
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| 		strbuf_addf(&refline, " symref-target:%s",
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| 			    strip_namespace(symref_target));
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| 	}
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| 
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| 	if (data->peel) {
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| 		struct object_id peeled;
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| 		if (!peel_ref(refname, &peeled))
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| 			strbuf_addf(&refline, " peeled:%s", oid_to_hex(&peeled));
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| 	}
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| 
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| 	strbuf_addch(&refline, '\n');
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| 	packet_write(1, refline.buf, refline.len);
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| 
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| 	strbuf_release(&refline);
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| 	return 0;
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| }
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| 
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| static int ls_refs_config(const char *var, const char *value, void *data)
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| {
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| 	/*
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| 	 * We only serve fetches over v2 for now, so respect only "uploadpack"
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| 	 * config. This may need to eventually be expanded to "receive", but we
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| 	 * don't yet know how that information will be passed to ls-refs.
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| 	 */
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| 	return parse_hide_refs_config(var, value, "uploadpack");
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| }
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| 
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| int ls_refs(struct repository *r, struct strvec *keys,
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| 	    struct packet_reader *request)
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| {
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| 	struct ls_refs_data data;
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| 
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| 	memset(&data, 0, sizeof(data));
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| 
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| 	git_config(ls_refs_config, NULL);
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| 
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| 	while (packet_reader_read(request) == PACKET_READ_NORMAL) {
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| 		const char *arg = request->line;
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| 		const char *out;
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| 
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| 		if (!strcmp("peel", arg))
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| 			data.peel = 1;
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| 		else if (!strcmp("symrefs", arg))
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| 			data.symrefs = 1;
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| 		else if (skip_prefix(arg, "ref-prefix ", &out))
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| 			strvec_push(&data.prefixes, out);
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| 	}
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| 
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| 	if (request->status != PACKET_READ_FLUSH)
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| 		die(_("expected flush after ls-refs arguments"));
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| 
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| 	head_ref_namespaced(send_ref, &data);
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| 	for_each_namespaced_ref(send_ref, &data);
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| 	packet_flush(1);
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| 	strvec_clear(&data.prefixes);
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| 	return 0;
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| }
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