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/* ui-clone.c: functions for http cloning, based on
 * git's http-backend.c by Shawn O. Pearce
 *
 * Copyright (C) 2008 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "html.h"
#include "ui-shared.h"

static int print_ref_info(const char *refname, const unsigned char *sha1,
                          int flags, void *cb_data)
{
	struct object *obj;

	if (!(obj = parse_object(sha1)))
		return 0;

	if (!strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"))
		htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
	else if (!prefixcmp(refname, "refs/tags") && obj->type == OBJ_TAG) {
		if (!(obj = deref_tag(obj, refname, 0)))
			return 0;
		htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
		htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
	}
	return 0;
}

static void print_pack_info(struct cgit_context *ctx)
{
	struct packed_git *pack;
	int ofs;

	ctx->page.mimetype = "text/plain";
	ctx->page.filename = "objects/info/packs";
	cgit_print_http_headers(ctx);
	ofs = strlen(ctx->repo->path) + strlen("/objects/pack/");
	prepare_packed_git();
	for (pack = packed_git; pack; pack = pack->next)
		if (pack->pack_local)
			htmlf("P %s\n", pack->pack_name + ofs);
}

static void send_file(struct cgit_context *ctx, char *path)
{
	struct stat st;

	if (stat(path, &st)) {
		switch (errno) {
		case ENOENT:
			html_status(404, "Not found", 0);
			break;
		case EACCES:
			html_status(403, "Forbidden", 0);
			break;
		default:
			html_status(400, "Bad request", 0);
		}
		return;
	}
	ctx->page.mimetype = "application/octet-stream";
	ctx->page.filename = path;
	if (prefixcmp(ctx->repo->path, path))
		ctx->page.filename += strlen(ctx->repo->path) + 1;
	cgit_print_http_headers(ctx);
	html_include(path);
}

void cgit_clone_info(struct cgit_context *ctx)
{
	if (!ctx->qry.path || strcmp(ctx->qry.path, "refs"))
		return;

	ctx->page.mimetype = "text/plain";
	ctx->page.filename = "info/refs";
	cgit_print_http_headers(ctx);
	for_each_ref(print_ref_info, ctx);
}

void cgit_clone_objects(struct cgit_context *ctx)
{
	if (!ctx->qry.path) {
		html_status(400, "Bad request", 0);
		return;
	}

	if (!strcmp(ctx->qry.path, "info/packs")) {
		print_pack_info(ctx);
		return;
	}

	send_file(ctx, git_path("objects/%s", ctx->qry.path));
}

void cgit_clone_head(struct cgit_context *ctx)
{
	send_file(ctx, git_path("%s", "HEAD"));
}
k">if (mode == 2 && *p == '>') { *email = substr(t, p + 1); t = p; mode++; } else if (mode == 2 && *p == '\n') { *email = substr(t, p); p++; break; } else if (mode == 3 && isdigit(*p)) { *date = atol(p); mode++; } else if (*p == '\n') { p++; break; } p++; } return p; } #ifdef NO_ICONV #define reencode(a, b, c) #else const char *reencode(char **txt, const char *src_enc, const char *dst_enc) { char *tmp; if (!txt || !*txt || !src_enc || !dst_enc) return *txt; tmp = reencode_string(*txt, src_enc, dst_enc); if (tmp) { free(*txt); *txt = tmp; } return *txt; } #endif struct commitinfo *cgit_parse_commit(struct commit *commit) { struct commitinfo *ret; char *p = commit->buffer, *t = commit->buffer; ret = xmalloc(sizeof(*ret)); ret->commit = commit; ret->author = NULL; ret->author_email = NULL; ret->committer = NULL; ret->committer_email = NULL; ret->subject = NULL; ret->msg = NULL; ret->msg_encoding = NULL; if (p == NULL) return ret; if (strncmp(p, "tree ", 5)) die("Bad commit: %s", sha1_to_hex(commit->object.sha1)); else p += 46; // "tree " + hex[40] + "\n" while (!strncmp(p, "parent ", 7)) p += 48; // "parent " + hex[40] + "\n" if (p && !strncmp(p, "author ", 7)) { p = parse_user(p + 7, &ret->author, &ret->author_email, &ret->author_date); } if (p && !strncmp(p, "committer ", 9)) { p = parse_user(p + 9, &ret->committer, &ret->committer_email, &ret->committer_date); } if (p && !strncmp(p, "encoding ", 9)) { p += 9; t = strchr(p, '\n'); if (t) { ret->msg_encoding = substr(p, t + 1); p = t + 1; } } // skip unknown header fields while (p && *p && (*p != '\n')) { p = strchr(p, '\n'); if (p) p++; } // skip empty lines between headers and message while (p && *p == '\n') p++; if (!p) return ret; t = strchr(p, '\n'); if (t) { ret->subject = substr(p, t); p = t + 1; while (p && *p == '\n') { p = strchr(p, '\n'); if (p) p++; } if (p) ret->msg = xstrdup(p); } else ret->subject = xstrdup(p); if (ret->msg_encoding) { reencode(&ret->subject, PAGE_ENCODING, ret->msg_encoding); reencode(&ret->msg, PAGE_ENCODING, ret->msg_encoding); } return ret; } struct taginfo *cgit_parse_tag(struct tag *tag) { void *data; enum object_type type; unsigned long size; char *p; struct taginfo *ret; data = read_sha1_file(tag->object.sha1, &type, &size); if (!data || type != OBJ_TAG) { free(data); return 0; } ret = xmalloc(sizeof(*ret)); ret->tagger = NULL; ret->tagger_email = NULL; ret->tagger_date = 0; ret->msg = NULL; p = data; while (p && *p) { if (*p == '\n') break; if (!strncmp(p, "tagger ", 7)) { p = parse_user(p + 7, &ret->tagger, &ret->tagger_email, &ret->tagger_date); } else { p = strchr(p, '\n'); if (p) p++; } } // skip empty lines between headers and message while (p && *p == '\n') p++; if (p && *p) ret->msg = xstrdup(p); free(data); return ret; }