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a hyperfast web frontend for git written in c

ui-shared.c (view raw)

   1/* ui-shared.c: common web output functions
   2 *
   3 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4 *
   5 * Licensed under GNU General Public License v2
   6 *   (see COPYING for full license text)
   7 */
   8
   9#include "cgit.h"
  10#include "ui-shared.h"
  11#include "cmd.h"
  12#include "html.h"
  13
  14static const char cgit_doctype[] =
  15"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  16"  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
  17
  18static char *http_date(time_t t)
  19{
  20	static char day[][4] =
  21		{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  22	static char month[][4] =
  23		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  24		 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  25	struct tm *tm = gmtime(&t);
  26	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  27		   tm->tm_mday, month[tm->tm_mon], 1900 + tm->tm_year,
  28		   tm->tm_hour, tm->tm_min, tm->tm_sec);
  29}
  30
  31void cgit_print_error(const char *fmt, ...)
  32{
  33	va_list ap;
  34	va_start(ap, fmt);
  35	cgit_vprint_error(fmt, ap);
  36	va_end(ap);
  37}
  38
  39void cgit_vprint_error(const char *fmt, va_list ap)
  40{
  41	va_list cp;
  42	html("<div class='error'>");
  43	va_copy(cp, ap);
  44	html_vtxtf(fmt, cp);
  45	va_end(cp);
  46	html("</div>\n");
  47}
  48
  49const char *cgit_httpscheme(void)
  50{
  51	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  52		return "https://";
  53	else
  54		return "http://";
  55}
  56
  57const char *cgit_hosturl(void)
  58{
  59	if (ctx.env.http_host)
  60		return ctx.env.http_host;
  61	if (!ctx.env.server_name)
  62		return NULL;
  63	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  64		return ctx.env.server_name;
  65	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
  66}
  67
  68const char *cgit_currenturl(void)
  69{
  70	if (!ctx.qry.url)
  71		return cgit_rooturl();
  72	const char *root = cgit_rooturl();
  73	size_t len = strlen(root);
  74	if (len && root[len - 1] == '/')
  75		return fmtalloc("%s%s", root, ctx.qry.url);
  76	return fmtalloc("%s/%s", root, ctx.qry.url);
  77}
  78
  79const char *cgit_rooturl(void)
  80{
  81	if (ctx.cfg.virtual_root)
  82		return ctx.cfg.virtual_root;
  83	else
  84		return ctx.cfg.script_name;
  85}
  86
  87const char *cgit_loginurl(void)
  88{
  89	static const char *login_url;
  90	if (!login_url)
  91		login_url = fmtalloc("%s?p=login", cgit_rooturl());
  92	return login_url;
  93}
  94
  95char *cgit_repourl(const char *reponame)
  96{
  97	if (ctx.cfg.virtual_root)
  98		return fmtalloc("%s%s/", ctx.cfg.virtual_root, reponame);
  99	else
 100		return fmtalloc("?r=%s", reponame);
 101}
 102
 103char *cgit_fileurl(const char *reponame, const char *pagename,
 104		   const char *filename, const char *query)
 105{
 106	struct strbuf sb = STRBUF_INIT;
 107	char *delim;
 108
 109	if (ctx.cfg.virtual_root) {
 110		strbuf_addf(&sb, "%s%s/%s/%s", ctx.cfg.virtual_root, reponame,
 111			    pagename, (filename ? filename:""));
 112		delim = "?";
 113	} else {
 114		strbuf_addf(&sb, "?url=%s/%s/%s", reponame, pagename,
 115			    (filename ? filename : ""));
 116		delim = "&amp;";
 117	}
 118	if (query)
 119		strbuf_addf(&sb, "%s%s", delim, query);
 120	return strbuf_detach(&sb, NULL);
 121}
 122
 123char *cgit_pageurl(const char *reponame, const char *pagename,
 124		   const char *query)
 125{
 126	return cgit_fileurl(reponame, pagename, NULL, query);
 127}
 128
 129const char *cgit_repobasename(const char *reponame)
 130{
 131	/* I assume we don't need to store more than one repo basename */
 132	static char rvbuf[1024];
 133	int p;
 134	const char *rv;
 135	strncpy(rvbuf, reponame, sizeof(rvbuf));
 136	if (rvbuf[sizeof(rvbuf)-1])
 137		die("cgit_repobasename: truncated repository name '%s'", reponame);
 138	p = strlen(rvbuf)-1;
 139	/* strip trailing slashes */
 140	while (p && rvbuf[p] == '/') rvbuf[p--] = 0;
 141	/* strip trailing .git */
 142	if (p >= 3 && starts_with(&rvbuf[p-3], ".git")) {
 143		p -= 3; rvbuf[p--] = 0;
 144	}
 145	/* strip more trailing slashes if any */
 146	while ( p && rvbuf[p] == '/') rvbuf[p--] = 0;
 147	/* find last slash in the remaining string */
 148	rv = strrchr(rvbuf,'/');
 149	if (rv)
 150		return ++rv;
 151	return rvbuf;
 152}
 153
 154static void site_url(const char *page, const char *search, const char *sort, int ofs, int always_root)
 155{
 156	char *delim = "?";
 157
 158	if (always_root || page)
 159		html_attr(cgit_rooturl());
 160	else
 161		html_attr(cgit_currenturl());
 162
 163	if (page) {
 164		htmlf("?p=%s", page);
 165		delim = "&amp;";
 166	}
 167	if (search) {
 168		html(delim);
 169		html("q=");
 170		html_attr(search);
 171		delim = "&amp;";
 172	}
 173	if (sort) {
 174		html(delim);
 175		html("s=");
 176		html_attr(sort);
 177		delim = "&amp;";
 178	}
 179	if (ofs) {
 180		html(delim);
 181		htmlf("ofs=%d", ofs);
 182	}
 183}
 184
 185static void site_link(const char *page, const char *name, const char *title,
 186		      const char *class, const char *search, const char *sort, int ofs, int always_root)
 187{
 188	html("<a");
 189	if (title) {
 190		html(" title='");
 191		html_attr(title);
 192		html("'");
 193	}
 194	if (class) {
 195		html(" class='");
 196		html_attr(class);
 197		html("'");
 198	}
 199	html(" href='");
 200	site_url(page, search, sort, ofs, always_root);
 201	html("'>");
 202	html_txt(name);
 203	html("</a>");
 204}
 205
 206void cgit_index_link(const char *name, const char *title, const char *class,
 207		     const char *pattern, const char *sort, int ofs, int always_root)
 208{
 209	site_link(NULL, name, title, class, pattern, sort, ofs, always_root);
 210}
 211
 212static char *repolink(const char *title, const char *class, const char *page,
 213		      const char *head, const char *path)
 214{
 215	char *delim = "?";
 216
 217	html("<a");
 218	if (title) {
 219		html(" title='");
 220		html_attr(title);
 221		html("'");
 222	}
 223	if (class) {
 224		html(" class='");
 225		html_attr(class);
 226		html("'");
 227	}
 228	html(" href='");
 229	if (ctx.cfg.virtual_root) {
 230		html_url_path(ctx.cfg.virtual_root);
 231		html_url_path(ctx.repo->url);
 232		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 233			html("/");
 234		if (page) {
 235			html_url_path(page);
 236			html("/");
 237			if (path)
 238				html_url_path(path);
 239		}
 240	} else {
 241		html_url_path(ctx.cfg.script_name);
 242		html("?url=");
 243		html_url_arg(ctx.repo->url);
 244		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 245			html("/");
 246		if (page) {
 247			html_url_arg(page);
 248			html("/");
 249			if (path)
 250				html_url_arg(path);
 251		}
 252		delim = "&amp;";
 253	}
 254	if (head && strcmp(head, ctx.repo->defbranch)) {
 255		html(delim);
 256		html("h=");
 257		html_url_arg(head);
 258		delim = "&amp;";
 259	}
 260	return fmt("%s", delim);
 261}
 262
 263static void reporevlink(const char *page, const char *name, const char *title,
 264			const char *class, const char *head, const char *rev,
 265			const char *path)
 266{
 267	char *delim;
 268
 269	delim = repolink(title, class, page, head, path);
 270	if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 271		html(delim);
 272		html("id=");
 273		html_url_arg(rev);
 274	}
 275	html("'>");
 276	html_txt(name);
 277	html("</a>");
 278}
 279
 280void cgit_summary_link(const char *name, const char *title, const char *class,
 281		       const char *head)
 282{
 283	reporevlink(NULL, name, title, class, head, NULL, NULL);
 284}
 285
 286void cgit_tag_link(const char *name, const char *title, const char *class,
 287		   const char *tag)
 288{
 289	reporevlink("tag", name, title, class, tag, NULL, NULL);
 290}
 291
 292void cgit_tree_link(const char *name, const char *title, const char *class,
 293		    const char *head, const char *rev, const char *path)
 294{
 295	reporevlink("tree", name, title, class, head, rev, path);
 296}
 297
 298void cgit_plain_link(const char *name, const char *title, const char *class,
 299		     const char *head, const char *rev, const char *path)
 300{
 301	reporevlink("plain", name, title, class, head, rev, path);
 302}
 303
 304void cgit_log_link(const char *name, const char *title, const char *class,
 305		   const char *head, const char *rev, const char *path,
 306		   int ofs, const char *grep, const char *pattern, int showmsg)
 307{
 308	char *delim;
 309
 310	delim = repolink(title, class, "log", head, path);
 311	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 312		html(delim);
 313		html("id=");
 314		html_url_arg(rev);
 315		delim = "&amp;";
 316	}
 317	if (grep && pattern) {
 318		html(delim);
 319		html("qt=");
 320		html_url_arg(grep);
 321		delim = "&amp;";
 322		html(delim);
 323		html("q=");
 324		html_url_arg(pattern);
 325	}
 326	if (ofs > 0) {
 327		html(delim);
 328		html("ofs=");
 329		htmlf("%d", ofs);
 330		delim = "&amp;";
 331	}
 332	if (showmsg) {
 333		html(delim);
 334		html("showmsg=1");
 335	}
 336	html("'>");
 337	html_txt(name);
 338	html("</a>");
 339}
 340
 341void cgit_commit_link(char *name, const char *title, const char *class,
 342		      const char *head, const char *rev, const char *path)
 343{
 344	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 345		name[ctx.cfg.max_msg_len] = '\0';
 346		name[ctx.cfg.max_msg_len - 1] = '.';
 347		name[ctx.cfg.max_msg_len - 2] = '.';
 348		name[ctx.cfg.max_msg_len - 3] = '.';
 349	}
 350
 351	char *delim;
 352
 353	delim = repolink(title, class, "commit", head, path);
 354	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 355		html(delim);
 356		html("id=");
 357		html_url_arg(rev);
 358		delim = "&amp;";
 359	}
 360	if (ctx.qry.difftype) {
 361		html(delim);
 362		htmlf("dt=%d", ctx.qry.difftype);
 363		delim = "&amp;";
 364	}
 365	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 366		html(delim);
 367		html("context=");
 368		htmlf("%d", ctx.qry.context);
 369		delim = "&amp;";
 370	}
 371	if (ctx.qry.ignorews) {
 372		html(delim);
 373		html("ignorews=1");
 374		delim = "&amp;";
 375	}
 376	html("'>");
 377	if (name[0] != '\0')
 378		html_txt(name);
 379	else
 380		html_txt("(no commit message)");
 381	html("</a>");
 382}
 383
 384void cgit_refs_link(const char *name, const char *title, const char *class,
 385		    const char *head, const char *rev, const char *path)
 386{
 387	reporevlink("refs", name, title, class, head, rev, path);
 388}
 389
 390void cgit_snapshot_link(const char *name, const char *title, const char *class,
 391			const char *head, const char *rev,
 392			const char *archivename)
 393{
 394	reporevlink("snapshot", name, title, class, head, rev, archivename);
 395}
 396
 397void cgit_diff_link(const char *name, const char *title, const char *class,
 398		    const char *head, const char *new_rev, const char *old_rev,
 399		    const char *path)
 400{
 401	char *delim;
 402
 403	delim = repolink(title, class, "diff", head, path);
 404	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 405		html(delim);
 406		html("id=");
 407		html_url_arg(new_rev);
 408		delim = "&amp;";
 409	}
 410	if (old_rev) {
 411		html(delim);
 412		html("id2=");
 413		html_url_arg(old_rev);
 414		delim = "&amp;";
 415	}
 416	if (ctx.qry.difftype) {
 417		html(delim);
 418		htmlf("dt=%d", ctx.qry.difftype);
 419		delim = "&amp;";
 420	}
 421	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 422		html(delim);
 423		html("context=");
 424		htmlf("%d", ctx.qry.context);
 425		delim = "&amp;";
 426	}
 427	if (ctx.qry.ignorews) {
 428		html(delim);
 429		html("ignorews=1");
 430		delim = "&amp;";
 431	}
 432	html("'>");
 433	html_txt(name);
 434	html("</a>");
 435}
 436
 437void cgit_patch_link(const char *name, const char *title, const char *class,
 438		     const char *head, const char *rev, const char *path)
 439{
 440	reporevlink("patch", name, title, class, head, rev, path);
 441}
 442
 443void cgit_stats_link(const char *name, const char *title, const char *class,
 444		     const char *head, const char *path)
 445{
 446	reporevlink("stats", name, title, class, head, NULL, path);
 447}
 448
 449static void cgit_self_link(char *name, const char *title, const char *class)
 450{
 451	if (!strcmp(ctx.qry.page, "repolist"))
 452		cgit_index_link(name, title, class, ctx.qry.search, ctx.qry.sort,
 453				ctx.qry.ofs, 1);
 454	else if (!strcmp(ctx.qry.page, "summary"))
 455		cgit_summary_link(name, title, class, ctx.qry.head);
 456	else if (!strcmp(ctx.qry.page, "tag"))
 457		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
 458			       ctx.qry.sha1 : ctx.qry.head);
 459	else if (!strcmp(ctx.qry.page, "tree"))
 460		cgit_tree_link(name, title, class, ctx.qry.head,
 461			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 462			       ctx.qry.path);
 463	else if (!strcmp(ctx.qry.page, "plain"))
 464		cgit_plain_link(name, title, class, ctx.qry.head,
 465				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 466				ctx.qry.path);
 467	else if (!strcmp(ctx.qry.page, "log"))
 468		cgit_log_link(name, title, class, ctx.qry.head,
 469			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 470			      ctx.qry.path, ctx.qry.ofs,
 471			      ctx.qry.grep, ctx.qry.search,
 472			      ctx.qry.showmsg);
 473	else if (!strcmp(ctx.qry.page, "commit"))
 474		cgit_commit_link(name, title, class, ctx.qry.head,
 475				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 476				 ctx.qry.path);
 477	else if (!strcmp(ctx.qry.page, "patch"))
 478		cgit_patch_link(name, title, class, ctx.qry.head,
 479				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 480				ctx.qry.path);
 481	else if (!strcmp(ctx.qry.page, "refs"))
 482		cgit_refs_link(name, title, class, ctx.qry.head,
 483			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 484			       ctx.qry.path);
 485	else if (!strcmp(ctx.qry.page, "snapshot"))
 486		cgit_snapshot_link(name, title, class, ctx.qry.head,
 487				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 488				   ctx.qry.path);
 489	else if (!strcmp(ctx.qry.page, "diff"))
 490		cgit_diff_link(name, title, class, ctx.qry.head,
 491			       ctx.qry.sha1, ctx.qry.sha2,
 492			       ctx.qry.path);
 493	else if (!strcmp(ctx.qry.page, "stats"))
 494		cgit_stats_link(name, title, class, ctx.qry.head,
 495				ctx.qry.path);
 496	else {
 497		/* Don't known how to make link for this page */
 498		repolink(title, class, ctx.qry.page, ctx.qry.head, ctx.qry.path);
 499		html("><!-- cgit_self_link() doesn't know how to make link for page '");
 500		html_txt(ctx.qry.page);
 501		html("' -->");
 502		html_txt(name);
 503		html("</a>");
 504	}
 505}
 506
 507void cgit_object_link(struct object *obj)
 508{
 509	char *page, *shortrev, *fullrev, *name;
 510
 511	fullrev = sha1_to_hex(obj->sha1);
 512	shortrev = xstrdup(fullrev);
 513	shortrev[10] = '\0';
 514	if (obj->type == OBJ_COMMIT) {
 515		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 516				 ctx.qry.head, fullrev, NULL);
 517		return;
 518	} else if (obj->type == OBJ_TREE)
 519		page = "tree";
 520	else if (obj->type == OBJ_TAG)
 521		page = "tag";
 522	else
 523		page = "blob";
 524	name = fmt("%s %s...", typename(obj->type), shortrev);
 525	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 526}
 527
 528static struct string_list_item *lookup_path(struct string_list *list,
 529					    const char *path)
 530{
 531	struct string_list_item *item;
 532
 533	while (path && path[0]) {
 534		if ((item = string_list_lookup(list, path)))
 535			return item;
 536		if (!(path = strchr(path, '/')))
 537			break;
 538		path++;
 539	}
 540	return NULL;
 541}
 542
 543void cgit_submodule_link(const char *class, char *path, const char *rev)
 544{
 545	struct string_list *list;
 546	struct string_list_item *item;
 547	char tail, *dir;
 548	size_t len;
 549
 550	len = 0;
 551	tail = 0;
 552	list = &ctx.repo->submodules;
 553	item = lookup_path(list, path);
 554	if (!item) {
 555		len = strlen(path);
 556		tail = path[len - 1];
 557		if (tail == '/') {
 558			path[len - 1] = 0;
 559			item = lookup_path(list, path);
 560		}
 561	}
 562	if (item || ctx.repo->module_link) {
 563		html("<a ");
 564		if (class)
 565			htmlf("class='%s' ", class);
 566		html("href='");
 567		if (item) {
 568			html_attrf(item->util, rev);
 569		} else {
 570			dir = strrchr(path, '/');
 571			if (dir)
 572				dir++;
 573			else
 574				dir = path;
 575			html_attrf(ctx.repo->module_link, dir, rev);
 576		}
 577		html("'>");
 578		html_txt(path);
 579		html("</a>");
 580	} else {
 581		html("<span");
 582		if (class)
 583			htmlf(" class='%s'", class);
 584		html(">");
 585		html_txt(path);
 586		html("</span>");
 587	}
 588	html_txtf(" @ %.7s", rev);
 589	if (item && tail)
 590		path[len - 1] = tail;
 591}
 592
 593void cgit_print_date(time_t secs, const char *format, int local_time)
 594{
 595	char buf[64];
 596	struct tm *time;
 597
 598	if (!secs)
 599		return;
 600	if (local_time)
 601		time = localtime(&secs);
 602	else
 603		time = gmtime(&secs);
 604	strftime(buf, sizeof(buf)-1, format, time);
 605	html_txt(buf);
 606}
 607
 608static void print_rel_date(time_t t, double value,
 609	const char *class, const char *suffix)
 610{
 611	char buf[64];
 612	struct tm *time;
 613
 614	if (ctx.cfg.local_time)
 615		time = localtime(&t);
 616	else
 617		time = gmtime(&t);
 618	strftime(buf, sizeof(buf) - 1, FMT_LONGDATE, time);
 619
 620	htmlf("<span class='%s' title='", class);
 621	html_attr(buf);
 622	htmlf("'>%.0f %s</span>", value, suffix);
 623}
 624
 625void cgit_print_age(time_t t, time_t max_relative, const char *format)
 626{
 627	time_t now, secs;
 628
 629	if (!t)
 630		return;
 631	time(&now);
 632	secs = now - t;
 633	if (secs < 0)
 634		secs = 0;
 635
 636	if (secs > max_relative && max_relative >= 0) {
 637		cgit_print_date(t, format, ctx.cfg.local_time);
 638		return;
 639	}
 640
 641	if (secs < TM_HOUR * 2) {
 642		print_rel_date(t, secs * 1.0 / TM_MIN, "age-mins", "min.");
 643		return;
 644	}
 645	if (secs < TM_DAY * 2) {
 646		print_rel_date(t, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 647		return;
 648	}
 649	if (secs < TM_WEEK * 2) {
 650		print_rel_date(t, secs * 1.0 / TM_DAY, "age-days", "days");
 651		return;
 652	}
 653	if (secs < TM_MONTH * 2) {
 654		print_rel_date(t, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 655		return;
 656	}
 657	if (secs < TM_YEAR * 2) {
 658		print_rel_date(t, secs * 1.0 / TM_MONTH, "age-months", "months");
 659		return;
 660	}
 661	print_rel_date(t, secs * 1.0 / TM_YEAR, "age-years", "years");
 662}
 663
 664void cgit_print_http_headers(void)
 665{
 666	if (ctx.env.no_http && !strcmp(ctx.env.no_http, "1"))
 667		return;
 668
 669	if (ctx.page.status)
 670		htmlf("Status: %d %s\n", ctx.page.status, ctx.page.statusmsg);
 671	if (ctx.page.mimetype && ctx.page.charset)
 672		htmlf("Content-Type: %s; charset=%s\n", ctx.page.mimetype,
 673		      ctx.page.charset);
 674	else if (ctx.page.mimetype)
 675		htmlf("Content-Type: %s\n", ctx.page.mimetype);
 676	if (ctx.page.size)
 677		htmlf("Content-Length: %zd\n", ctx.page.size);
 678	if (ctx.page.filename)
 679		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 680		      ctx.page.filename);
 681	if (!ctx.env.authenticated)
 682		html("Cache-Control: no-cache, no-store\n");
 683	htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
 684	htmlf("Expires: %s\n", http_date(ctx.page.expires));
 685	if (ctx.page.etag)
 686		htmlf("ETag: \"%s\"\n", ctx.page.etag);
 687	html("\n");
 688	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
 689		exit(0);
 690}
 691
 692static void print_rel_vcs_link(const char *url)
 693{
 694	html("<link rel='vcs-git' href='");
 695	html_attr(url);
 696	html("' title='");
 697	html_attr(ctx.repo->name);
 698	html(" Git repository'/>\n");
 699}
 700
 701void cgit_print_docstart(void)
 702{
 703	if (ctx.cfg.embedded) {
 704		if (ctx.cfg.header)
 705			html_include(ctx.cfg.header);
 706		return;
 707	}
 708
 709	const char *host = cgit_hosturl();
 710	html(cgit_doctype);
 711	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 712	html("<head>\n");
 713	html("<title>");
 714	html_txt(ctx.page.title);
 715	html("</title>\n");
 716	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 717	if (ctx.cfg.robots && *ctx.cfg.robots)
 718		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
 719	html("<link rel='stylesheet' type='text/css' href='");
 720	html_attr(ctx.cfg.css);
 721	html("'/>\n");
 722	if (ctx.cfg.favicon) {
 723		html("<link rel='shortcut icon' href='");
 724		html_attr(ctx.cfg.favicon);
 725		html("'/>\n");
 726	}
 727	if (host && ctx.repo && ctx.qry.head) {
 728		struct strbuf sb = STRBUF_INIT;
 729		strbuf_addf(&sb, "h=%s", ctx.qry.head);
 730
 731		html("<link rel='alternate' title='Atom feed' href='");
 732		html(cgit_httpscheme());
 733		html_attr(cgit_hosturl());
 734		html_attr(cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
 735				       sb.buf));
 736		html("' type='application/atom+xml'/>\n");
 737		strbuf_release(&sb);
 738	}
 739	if (ctx.repo)
 740		cgit_add_clone_urls(print_rel_vcs_link);
 741	if (ctx.cfg.head_include)
 742		html_include(ctx.cfg.head_include);
 743	html("</head>\n");
 744	html("<body>\n");
 745	if (ctx.cfg.header)
 746		html_include(ctx.cfg.header);
 747}
 748
 749void cgit_print_docend(void)
 750{
 751	html("</div> <!-- class=content -->\n");
 752	if (ctx.cfg.embedded) {
 753		html("</div> <!-- id=cgit -->\n");
 754		if (ctx.cfg.footer)
 755			html_include(ctx.cfg.footer);
 756		return;
 757	}
 758	if (ctx.cfg.footer)
 759		html_include(ctx.cfg.footer);
 760	else {
 761		htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 762			cgit_version);
 763		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 764		html("</div>\n");
 765	}
 766	html("</div> <!-- id=cgit -->\n");
 767	html("</body>\n</html>\n");
 768}
 769
 770static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 771{
 772	struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
 773	int i;
 774
 775	for (i = 0; url_list[i]; i++) {
 776		strbuf_rtrim(url_list[i]);
 777		if (url_list[i]->len == 0)
 778			continue;
 779		if (suffix && *suffix)
 780			strbuf_addf(url_list[i], "/%s", suffix);
 781		fn(url_list[i]->buf);
 782	}
 783
 784	strbuf_list_free(url_list);
 785}
 786
 787void cgit_add_clone_urls(void (*fn)(const char *))
 788{
 789	if (ctx.repo->clone_url)
 790		add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
 791	else if (ctx.cfg.clone_prefix)
 792		add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 793}
 794
 795static int print_branch_option(const char *refname, const struct object_id *oid,
 796			       int flags, void *cb_data)
 797{
 798	char *name = (char *)refname;
 799	html_option(name, name, ctx.qry.head);
 800	return 0;
 801}
 802
 803void cgit_add_hidden_formfields(int incl_head, int incl_search,
 804				const char *page)
 805{
 806	if (!ctx.cfg.virtual_root) {
 807		struct strbuf url = STRBUF_INIT;
 808
 809		strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 810		if (ctx.qry.vpath)
 811			strbuf_addf(&url, "/%s", ctx.qry.vpath);
 812		html_hidden("url", url.buf);
 813		strbuf_release(&url);
 814	}
 815
 816	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 817	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 818		html_hidden("h", ctx.qry.head);
 819
 820	if (ctx.qry.sha1)
 821		html_hidden("id", ctx.qry.sha1);
 822	if (ctx.qry.sha2)
 823		html_hidden("id2", ctx.qry.sha2);
 824	if (ctx.qry.showmsg)
 825		html_hidden("showmsg", "1");
 826
 827	if (incl_search) {
 828		if (ctx.qry.grep)
 829			html_hidden("qt", ctx.qry.grep);
 830		if (ctx.qry.search)
 831			html_hidden("q", ctx.qry.search);
 832	}
 833}
 834
 835static const char *hc(const char *page)
 836{
 837	return strcmp(ctx.qry.page, page) ? NULL : "active";
 838}
 839
 840static void cgit_print_path_crumbs(char *path)
 841{
 842	char *old_path = ctx.qry.path;
 843	char *p = path, *q, *end = path + strlen(path);
 844
 845	ctx.qry.path = NULL;
 846	cgit_self_link("root", NULL, NULL);
 847	ctx.qry.path = p = path;
 848	while (p < end) {
 849		if (!(q = strchr(p, '/')))
 850			q = end;
 851		*q = '\0';
 852		html_txt("/");
 853		cgit_self_link(p, NULL, NULL);
 854		if (q < end)
 855			*q = '/';
 856		p = q + 1;
 857	}
 858	ctx.qry.path = old_path;
 859}
 860
 861static void print_header(void)
 862{
 863	char *logo = NULL, *logo_link = NULL;
 864
 865	html("<table id='header'>\n");
 866	html("<tr>\n");
 867
 868	if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
 869		logo = ctx.repo->logo;
 870	else
 871		logo = ctx.cfg.logo;
 872	if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
 873		logo_link = ctx.repo->logo_link;
 874	else
 875		logo_link = ctx.cfg.logo_link;
 876	if (logo && *logo) {
 877		html("<td class='logo' rowspan='2'><a href='");
 878		if (logo_link && *logo_link)
 879			html_attr(logo_link);
 880		else
 881			html_attr(cgit_rooturl());
 882		html("'><img src='");
 883		html_attr(logo);
 884		html("' alt='cgit logo'/></a></td>\n");
 885	}
 886
 887	html("<td class='main'>");
 888	if (ctx.repo) {
 889		cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 890		html(" : ");
 891		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
 892		if (ctx.env.authenticated) {
 893			html("</td><td class='form'>");
 894			html("<form method='get' action=''>\n");
 895			cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 896			html("<select name='h' onchange='this.form.submit();'>\n");
 897			for_each_branch_ref(print_branch_option, ctx.qry.head);
 898			if (ctx.repo->enable_remote_branches)
 899				for_each_remote_ref(print_branch_option, ctx.qry.head);
 900			html("</select> ");
 901			html("<input type='submit' name='' value='switch'/>");
 902			html("</form>");
 903		}
 904	} else
 905		html_txt(ctx.cfg.root_title);
 906	html("</td></tr>\n");
 907
 908	html("<tr><td class='sub'>");
 909	if (ctx.repo) {
 910		html_txt(ctx.repo->desc);
 911		html("</td><td class='sub right'>");
 912		html_txt(ctx.repo->owner);
 913	} else {
 914		if (ctx.cfg.root_desc)
 915			html_txt(ctx.cfg.root_desc);
 916		else if (ctx.cfg.index_info)
 917			html_include(ctx.cfg.index_info);
 918	}
 919	html("</td></tr></table>\n");
 920}
 921
 922void cgit_print_pageheader(void)
 923{
 924	html("<div id='cgit'>");
 925	if (!ctx.env.authenticated || !ctx.cfg.noheader)
 926		print_header();
 927
 928	html("<table class='tabs'><tr><td>\n");
 929	if (ctx.env.authenticated && ctx.repo) {
 930		if (ctx.repo->readme.nr)
 931			reporevlink("about", "about", NULL,
 932				    hc("about"), ctx.qry.head, NULL,
 933				    NULL);
 934		cgit_summary_link("summary", NULL, hc("summary"),
 935				  ctx.qry.head);
 936		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
 937			       ctx.qry.sha1, NULL);
 938		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 939			      NULL, ctx.qry.vpath, 0, NULL, NULL,
 940			      ctx.qry.showmsg);
 941		cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
 942			       ctx.qry.sha1, ctx.qry.vpath);
 943		cgit_commit_link("commit", NULL, hc("commit"),
 944				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
 945		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
 946			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
 947		if (ctx.repo->max_stats)
 948			cgit_stats_link("stats", NULL, hc("stats"),
 949					ctx.qry.head, ctx.qry.vpath);
 950		html("</td><td class='form'>");
 951		html("<form class='right' method='get' action='");
 952		if (ctx.cfg.virtual_root)
 953			html_url_path(cgit_fileurl(ctx.qry.repo, "log",
 954						   ctx.qry.vpath, NULL));
 955		html("'>\n");
 956		cgit_add_hidden_formfields(1, 0, "log");
 957		html("<select name='qt'>\n");
 958		html_option("grep", "log msg", ctx.qry.grep);
 959		html_option("author", "author", ctx.qry.grep);
 960		html_option("committer", "committer", ctx.qry.grep);
 961		html_option("range", "range", ctx.qry.grep);
 962		html("</select>\n");
 963		html("<input class='txt' type='text' size='10' name='q' value='");
 964		html_attr(ctx.qry.search);
 965		html("'/>\n");
 966		html("<input type='submit' value='search'/>\n");
 967		html("</form>\n");
 968	} else if (ctx.env.authenticated) {
 969		site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
 970		if (ctx.cfg.root_readme)
 971			site_link("about", "about", NULL, hc("about"),
 972				  NULL, NULL, 0, 1);
 973		html("</td><td class='form'>");
 974		html("<form method='get' action='");
 975		html_attr(cgit_currenturl());
 976		html("'>\n");
 977		html("<input type='text' name='q' size='10' value='");
 978		html_attr(ctx.qry.search);
 979		html("'/>\n");
 980		html("<input type='submit' value='search'/>\n");
 981		html("</form>");
 982	}
 983	html("</td></tr></table>\n");
 984	if (ctx.env.authenticated && ctx.qry.vpath) {
 985		html("<div class='path'>");
 986		html("path: ");
 987		cgit_print_path_crumbs(ctx.qry.vpath);
 988		html("</div>");
 989	}
 990	html("<div class='content'>");
 991}
 992
 993void cgit_print_filemode(unsigned short mode)
 994{
 995	if (S_ISDIR(mode))
 996		html("d");
 997	else if (S_ISLNK(mode))
 998		html("l");
 999	else if (S_ISGITLINK(mode))
1000		html("m");
1001	else
1002		html("-");
1003	html_fileperm(mode >> 6);
1004	html_fileperm(mode >> 3);
1005	html_fileperm(mode);
1006}
1007
1008void cgit_print_snapshot_links(const char *repo, const char *head,
1009			       const char *hex, int snapshots)
1010{
1011	const struct cgit_snapshot_format* f;
1012	struct strbuf filename = STRBUF_INIT;
1013	size_t prefixlen;
1014	unsigned char sha1[20];
1015
1016	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
1017	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
1018		hex++;
1019	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
1020	prefixlen = filename.len;
1021	for (f = cgit_snapshot_formats; f->suffix; f++) {
1022		if (!(snapshots & f->bit))
1023			continue;
1024		strbuf_setlen(&filename, prefixlen);
1025		strbuf_addstr(&filename, f->suffix);
1026		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
1027				   filename.buf);
1028		html("<br/>");
1029	}
1030	strbuf_release(&filename);
1031}