all repos — cgit @ 37fce9916a264e23c0639df56ca3ecbbdc1c84b8

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		   int follow)
 308{
 309	char *delim;
 310
 311	delim = repolink(title, class, "log", head, path);
 312	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 313		html(delim);
 314		html("id=");
 315		html_url_arg(rev);
 316		delim = "&amp;";
 317	}
 318	if (grep && pattern) {
 319		html(delim);
 320		html("qt=");
 321		html_url_arg(grep);
 322		delim = "&amp;";
 323		html(delim);
 324		html("q=");
 325		html_url_arg(pattern);
 326	}
 327	if (ofs > 0) {
 328		html(delim);
 329		html("ofs=");
 330		htmlf("%d", ofs);
 331		delim = "&amp;";
 332	}
 333	if (showmsg) {
 334		html(delim);
 335		html("showmsg=1");
 336		delim = "&amp;";
 337	}
 338	if (follow) {
 339		html(delim);
 340		html("follow=1");
 341	}
 342	html("'>");
 343	html_txt(name);
 344	html("</a>");
 345}
 346
 347void cgit_commit_link(char *name, const char *title, const char *class,
 348		      const char *head, const char *rev, const char *path)
 349{
 350	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 351		name[ctx.cfg.max_msg_len] = '\0';
 352		name[ctx.cfg.max_msg_len - 1] = '.';
 353		name[ctx.cfg.max_msg_len - 2] = '.';
 354		name[ctx.cfg.max_msg_len - 3] = '.';
 355	}
 356
 357	char *delim;
 358
 359	delim = repolink(title, class, "commit", head, path);
 360	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 361		html(delim);
 362		html("id=");
 363		html_url_arg(rev);
 364		delim = "&amp;";
 365	}
 366	if (ctx.qry.difftype) {
 367		html(delim);
 368		htmlf("dt=%d", ctx.qry.difftype);
 369		delim = "&amp;";
 370	}
 371	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 372		html(delim);
 373		html("context=");
 374		htmlf("%d", ctx.qry.context);
 375		delim = "&amp;";
 376	}
 377	if (ctx.qry.ignorews) {
 378		html(delim);
 379		html("ignorews=1");
 380		delim = "&amp;";
 381	}
 382	if (ctx.qry.follow) {
 383		html(delim);
 384		html("follow=1");
 385	}
 386	html("'>");
 387	if (name[0] != '\0')
 388		html_txt(name);
 389	else
 390		html_txt("(no commit message)");
 391	html("</a>");
 392}
 393
 394void cgit_refs_link(const char *name, const char *title, const char *class,
 395		    const char *head, const char *rev, const char *path)
 396{
 397	reporevlink("refs", name, title, class, head, rev, path);
 398}
 399
 400void cgit_snapshot_link(const char *name, const char *title, const char *class,
 401			const char *head, const char *rev,
 402			const char *archivename)
 403{
 404	reporevlink("snapshot", name, title, class, head, rev, archivename);
 405}
 406
 407void cgit_diff_link(const char *name, const char *title, const char *class,
 408		    const char *head, const char *new_rev, const char *old_rev,
 409		    const char *path)
 410{
 411	char *delim;
 412
 413	delim = repolink(title, class, "diff", head, path);
 414	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 415		html(delim);
 416		html("id=");
 417		html_url_arg(new_rev);
 418		delim = "&amp;";
 419	}
 420	if (old_rev) {
 421		html(delim);
 422		html("id2=");
 423		html_url_arg(old_rev);
 424		delim = "&amp;";
 425	}
 426	if (ctx.qry.difftype) {
 427		html(delim);
 428		htmlf("dt=%d", ctx.qry.difftype);
 429		delim = "&amp;";
 430	}
 431	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 432		html(delim);
 433		html("context=");
 434		htmlf("%d", ctx.qry.context);
 435		delim = "&amp;";
 436	}
 437	if (ctx.qry.ignorews) {
 438		html(delim);
 439		html("ignorews=1");
 440		delim = "&amp;";
 441	}
 442	if (ctx.qry.follow) {
 443		html(delim);
 444		html("follow=1");
 445	}
 446	html("'>");
 447	html_txt(name);
 448	html("</a>");
 449}
 450
 451void cgit_patch_link(const char *name, const char *title, const char *class,
 452		     const char *head, const char *rev, const char *path)
 453{
 454	reporevlink("patch", name, title, class, head, rev, path);
 455}
 456
 457void cgit_stats_link(const char *name, const char *title, const char *class,
 458		     const char *head, const char *path)
 459{
 460	reporevlink("stats", name, title, class, head, NULL, path);
 461}
 462
 463static void cgit_self_link(char *name, const char *title, const char *class)
 464{
 465	if (!strcmp(ctx.qry.page, "repolist"))
 466		cgit_index_link(name, title, class, ctx.qry.search, ctx.qry.sort,
 467				ctx.qry.ofs, 1);
 468	else if (!strcmp(ctx.qry.page, "summary"))
 469		cgit_summary_link(name, title, class, ctx.qry.head);
 470	else if (!strcmp(ctx.qry.page, "tag"))
 471		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
 472			       ctx.qry.sha1 : ctx.qry.head);
 473	else if (!strcmp(ctx.qry.page, "tree"))
 474		cgit_tree_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, "plain"))
 478		cgit_plain_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, "log"))
 482		cgit_log_link(name, title, class, ctx.qry.head,
 483			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 484			      ctx.qry.path, ctx.qry.ofs,
 485			      ctx.qry.grep, ctx.qry.search,
 486			      ctx.qry.showmsg, ctx.qry.follow);
 487	else if (!strcmp(ctx.qry.page, "commit"))
 488		cgit_commit_link(name, title, class, ctx.qry.head,
 489				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 490				 ctx.qry.path);
 491	else if (!strcmp(ctx.qry.page, "patch"))
 492		cgit_patch_link(name, title, class, ctx.qry.head,
 493				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 494				ctx.qry.path);
 495	else if (!strcmp(ctx.qry.page, "refs"))
 496		cgit_refs_link(name, title, class, ctx.qry.head,
 497			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 498			       ctx.qry.path);
 499	else if (!strcmp(ctx.qry.page, "snapshot"))
 500		cgit_snapshot_link(name, title, class, ctx.qry.head,
 501				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 502				   ctx.qry.path);
 503	else if (!strcmp(ctx.qry.page, "diff"))
 504		cgit_diff_link(name, title, class, ctx.qry.head,
 505			       ctx.qry.sha1, ctx.qry.sha2,
 506			       ctx.qry.path);
 507	else if (!strcmp(ctx.qry.page, "stats"))
 508		cgit_stats_link(name, title, class, ctx.qry.head,
 509				ctx.qry.path);
 510	else {
 511		/* Don't known how to make link for this page */
 512		repolink(title, class, ctx.qry.page, ctx.qry.head, ctx.qry.path);
 513		html("><!-- cgit_self_link() doesn't know how to make link for page '");
 514		html_txt(ctx.qry.page);
 515		html("' -->");
 516		html_txt(name);
 517		html("</a>");
 518	}
 519}
 520
 521void cgit_object_link(struct object *obj)
 522{
 523	char *page, *shortrev, *fullrev, *name;
 524
 525	fullrev = sha1_to_hex(obj->sha1);
 526	shortrev = xstrdup(fullrev);
 527	shortrev[10] = '\0';
 528	if (obj->type == OBJ_COMMIT) {
 529		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 530				 ctx.qry.head, fullrev, NULL);
 531		return;
 532	} else if (obj->type == OBJ_TREE)
 533		page = "tree";
 534	else if (obj->type == OBJ_TAG)
 535		page = "tag";
 536	else
 537		page = "blob";
 538	name = fmt("%s %s...", typename(obj->type), shortrev);
 539	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 540}
 541
 542static struct string_list_item *lookup_path(struct string_list *list,
 543					    const char *path)
 544{
 545	struct string_list_item *item;
 546
 547	while (path && path[0]) {
 548		if ((item = string_list_lookup(list, path)))
 549			return item;
 550		if (!(path = strchr(path, '/')))
 551			break;
 552		path++;
 553	}
 554	return NULL;
 555}
 556
 557void cgit_submodule_link(const char *class, char *path, const char *rev)
 558{
 559	struct string_list *list;
 560	struct string_list_item *item;
 561	char tail, *dir;
 562	size_t len;
 563
 564	len = 0;
 565	tail = 0;
 566	list = &ctx.repo->submodules;
 567	item = lookup_path(list, path);
 568	if (!item) {
 569		len = strlen(path);
 570		tail = path[len - 1];
 571		if (tail == '/') {
 572			path[len - 1] = 0;
 573			item = lookup_path(list, path);
 574		}
 575	}
 576	if (item || ctx.repo->module_link) {
 577		html("<a ");
 578		if (class)
 579			htmlf("class='%s' ", class);
 580		html("href='");
 581		if (item) {
 582			html_attrf(item->util, rev);
 583		} else {
 584			dir = strrchr(path, '/');
 585			if (dir)
 586				dir++;
 587			else
 588				dir = path;
 589			html_attrf(ctx.repo->module_link, dir, rev);
 590		}
 591		html("'>");
 592		html_txt(path);
 593		html("</a>");
 594	} else {
 595		html("<span");
 596		if (class)
 597			htmlf(" class='%s'", class);
 598		html(">");
 599		html_txt(path);
 600		html("</span>");
 601	}
 602	html_txtf(" @ %.7s", rev);
 603	if (item && tail)
 604		path[len - 1] = tail;
 605}
 606
 607static const char *fmt_date(time_t secs, const char *format, int local_time)
 608{
 609	static char buf[64];
 610	struct tm *time;
 611
 612	if (!secs)
 613		return "";
 614	if (local_time)
 615		time = localtime(&secs);
 616	else
 617		time = gmtime(&secs);
 618	strftime(buf, sizeof(buf)-1, format, time);
 619	return buf;
 620}
 621
 622void cgit_print_date(time_t secs, const char *format, int local_time)
 623{
 624	html_txt(fmt_date(secs, format, local_time));
 625}
 626
 627static void print_rel_date(time_t t, double value,
 628	const char *class, const char *suffix)
 629{
 630	htmlf("<span class='%s' title='", class);
 631	html_attr(fmt_date(t, FMT_LONGDATE, ctx.cfg.local_time));
 632	htmlf("'>%.0f %s</span>", value, suffix);
 633}
 634
 635void cgit_print_age(time_t t, time_t max_relative, const char *format)
 636{
 637	time_t now, secs;
 638
 639	if (!t)
 640		return;
 641	time(&now);
 642	secs = now - t;
 643	if (secs < 0)
 644		secs = 0;
 645
 646	if (secs > max_relative && max_relative >= 0) {
 647		html("<span title='");
 648		html_attr(fmt_date(t, FMT_LONGDATE, ctx.cfg.local_time));
 649		html("'>");
 650		cgit_print_date(t, format, ctx.cfg.local_time);
 651		html("</span>");
 652		return;
 653	}
 654
 655	if (secs < TM_HOUR * 2) {
 656		print_rel_date(t, secs * 1.0 / TM_MIN, "age-mins", "min.");
 657		return;
 658	}
 659	if (secs < TM_DAY * 2) {
 660		print_rel_date(t, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 661		return;
 662	}
 663	if (secs < TM_WEEK * 2) {
 664		print_rel_date(t, secs * 1.0 / TM_DAY, "age-days", "days");
 665		return;
 666	}
 667	if (secs < TM_MONTH * 2) {
 668		print_rel_date(t, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 669		return;
 670	}
 671	if (secs < TM_YEAR * 2) {
 672		print_rel_date(t, secs * 1.0 / TM_MONTH, "age-months", "months");
 673		return;
 674	}
 675	print_rel_date(t, secs * 1.0 / TM_YEAR, "age-years", "years");
 676}
 677
 678void cgit_print_http_headers(void)
 679{
 680	if (ctx.env.no_http && !strcmp(ctx.env.no_http, "1"))
 681		return;
 682
 683	if (ctx.page.status)
 684		htmlf("Status: %d %s\n", ctx.page.status, ctx.page.statusmsg);
 685	if (ctx.page.mimetype && ctx.page.charset)
 686		htmlf("Content-Type: %s; charset=%s\n", ctx.page.mimetype,
 687		      ctx.page.charset);
 688	else if (ctx.page.mimetype)
 689		htmlf("Content-Type: %s\n", ctx.page.mimetype);
 690	if (ctx.page.size)
 691		htmlf("Content-Length: %zd\n", ctx.page.size);
 692	if (ctx.page.filename)
 693		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 694		      ctx.page.filename);
 695	if (!ctx.env.authenticated)
 696		html("Cache-Control: no-cache, no-store\n");
 697	htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
 698	htmlf("Expires: %s\n", http_date(ctx.page.expires));
 699	if (ctx.page.etag)
 700		htmlf("ETag: \"%s\"\n", ctx.page.etag);
 701	html("\n");
 702	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
 703		exit(0);
 704}
 705
 706void cgit_redirect(const char *url, bool permanent)
 707{
 708	htmlf("Status: %d %s\n", permanent ? 301 : 302, permanent ? "Moved" : "Found");
 709	htmlf("Location: %s\n\n", url);
 710	exit(0);
 711}
 712
 713static void print_rel_vcs_link(const char *url)
 714{
 715	html("<link rel='vcs-git' href='");
 716	html_attr(url);
 717	html("' title='");
 718	html_attr(ctx.repo->name);
 719	html(" Git repository'/>\n");
 720}
 721
 722void cgit_print_docstart(void)
 723{
 724	if (ctx.cfg.embedded) {
 725		if (ctx.cfg.header)
 726			html_include(ctx.cfg.header);
 727		return;
 728	}
 729
 730	const char *host = cgit_hosturl();
 731	html(cgit_doctype);
 732	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 733	html("<head>\n");
 734	html("<title>");
 735	html_txt(ctx.page.title);
 736	html("</title>\n");
 737	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 738	if (ctx.cfg.robots && *ctx.cfg.robots)
 739		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
 740	html("<link rel='stylesheet' type='text/css' href='");
 741	html_attr(ctx.cfg.css);
 742	html("'/>\n");
 743	if (ctx.cfg.favicon) {
 744		html("<link rel='shortcut icon' href='");
 745		html_attr(ctx.cfg.favicon);
 746		html("'/>\n");
 747	}
 748	if (host && ctx.repo && ctx.qry.head) {
 749		char *fileurl;
 750		struct strbuf sb = STRBUF_INIT;
 751		strbuf_addf(&sb, "h=%s", ctx.qry.head);
 752
 753		html("<link rel='alternate' title='Atom feed' href='");
 754		html(cgit_httpscheme());
 755		html_attr(cgit_hosturl());
 756		fileurl = cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
 757				       sb.buf);
 758		html_attr(fileurl);
 759		html("' type='application/atom+xml'/>\n");
 760		strbuf_release(&sb);
 761		free(fileurl);
 762	}
 763	if (ctx.repo)
 764		cgit_add_clone_urls(print_rel_vcs_link);
 765	if (ctx.cfg.head_include)
 766		html_include(ctx.cfg.head_include);
 767	html("</head>\n");
 768	html("<body>\n");
 769	if (ctx.cfg.header)
 770		html_include(ctx.cfg.header);
 771}
 772
 773void cgit_print_docend(void)
 774{
 775	html("</div> <!-- class=content -->\n");
 776	if (ctx.cfg.embedded) {
 777		html("</div> <!-- id=cgit -->\n");
 778		if (ctx.cfg.footer)
 779			html_include(ctx.cfg.footer);
 780		return;
 781	}
 782	if (ctx.cfg.footer)
 783		html_include(ctx.cfg.footer);
 784	else {
 785		htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 786			cgit_version);
 787		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 788		html("</div>\n");
 789	}
 790	html("</div> <!-- id=cgit -->\n");
 791	html("</body>\n</html>\n");
 792}
 793
 794void cgit_print_error_page(int code, const char *msg, const char *fmt, ...)
 795{
 796	va_list ap;
 797	ctx.page.expires = ctx.cfg.cache_dynamic_ttl;
 798	ctx.page.status = code;
 799	ctx.page.statusmsg = msg;
 800	cgit_print_http_headers();
 801	cgit_print_docstart();
 802	cgit_print_pageheader();
 803	va_start(ap, fmt);
 804	cgit_vprint_error(fmt, ap);
 805	va_end(ap);
 806	cgit_print_docend();
 807}
 808
 809void cgit_print_layout_start(void)
 810{
 811	cgit_print_http_headers();
 812	cgit_print_docstart();
 813	cgit_print_pageheader();
 814}
 815
 816void cgit_print_layout_end(void)
 817{
 818	cgit_print_docend();
 819}
 820
 821static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 822{
 823	struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
 824	int i;
 825
 826	for (i = 0; url_list[i]; i++) {
 827		strbuf_rtrim(url_list[i]);
 828		if (url_list[i]->len == 0)
 829			continue;
 830		if (suffix && *suffix)
 831			strbuf_addf(url_list[i], "/%s", suffix);
 832		fn(url_list[i]->buf);
 833	}
 834
 835	strbuf_list_free(url_list);
 836}
 837
 838void cgit_add_clone_urls(void (*fn)(const char *))
 839{
 840	if (ctx.repo->clone_url)
 841		add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
 842	else if (ctx.cfg.clone_prefix)
 843		add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 844}
 845
 846static int print_branch_option(const char *refname, const struct object_id *oid,
 847			       int flags, void *cb_data)
 848{
 849	char *name = (char *)refname;
 850	html_option(name, name, ctx.qry.head);
 851	return 0;
 852}
 853
 854void cgit_add_hidden_formfields(int incl_head, int incl_search,
 855				const char *page)
 856{
 857	if (!ctx.cfg.virtual_root) {
 858		struct strbuf url = STRBUF_INIT;
 859
 860		strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 861		if (ctx.qry.vpath)
 862			strbuf_addf(&url, "/%s", ctx.qry.vpath);
 863		html_hidden("url", url.buf);
 864		strbuf_release(&url);
 865	}
 866
 867	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 868	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 869		html_hidden("h", ctx.qry.head);
 870
 871	if (ctx.qry.sha1)
 872		html_hidden("id", ctx.qry.sha1);
 873	if (ctx.qry.sha2)
 874		html_hidden("id2", ctx.qry.sha2);
 875	if (ctx.qry.showmsg)
 876		html_hidden("showmsg", "1");
 877
 878	if (incl_search) {
 879		if (ctx.qry.grep)
 880			html_hidden("qt", ctx.qry.grep);
 881		if (ctx.qry.search)
 882			html_hidden("q", ctx.qry.search);
 883	}
 884}
 885
 886static const char *hc(const char *page)
 887{
 888	return strcmp(ctx.qry.page, page) ? NULL : "active";
 889}
 890
 891static void cgit_print_path_crumbs(char *path)
 892{
 893	char *old_path = ctx.qry.path;
 894	char *p = path, *q, *end = path + strlen(path);
 895
 896	ctx.qry.path = NULL;
 897	cgit_self_link("root", NULL, NULL);
 898	ctx.qry.path = p = path;
 899	while (p < end) {
 900		if (!(q = strchr(p, '/')))
 901			q = end;
 902		*q = '\0';
 903		html_txt("/");
 904		cgit_self_link(p, NULL, NULL);
 905		if (q < end)
 906			*q = '/';
 907		p = q + 1;
 908	}
 909	ctx.qry.path = old_path;
 910}
 911
 912static void print_header(void)
 913{
 914	char *logo = NULL, *logo_link = NULL;
 915
 916	html("<table id='header'>\n");
 917	html("<tr>\n");
 918
 919	if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
 920		logo = ctx.repo->logo;
 921	else
 922		logo = ctx.cfg.logo;
 923	if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
 924		logo_link = ctx.repo->logo_link;
 925	else
 926		logo_link = ctx.cfg.logo_link;
 927	if (logo && *logo) {
 928		html("<td class='logo' rowspan='2'><a href='");
 929		if (logo_link && *logo_link)
 930			html_attr(logo_link);
 931		else
 932			html_attr(cgit_rooturl());
 933		html("'><img src='");
 934		html_attr(logo);
 935		html("' alt='cgit logo'/></a></td>\n");
 936	}
 937
 938	html("<td class='main'>");
 939	if (ctx.repo) {
 940		cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 941		html(" : ");
 942		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
 943		if (ctx.env.authenticated) {
 944			html("</td><td class='form'>");
 945			html("<form method='get' action=''>\n");
 946			cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 947			html("<select name='h' onchange='this.form.submit();'>\n");
 948			for_each_branch_ref(print_branch_option, ctx.qry.head);
 949			if (ctx.repo->enable_remote_branches)
 950				for_each_remote_ref(print_branch_option, ctx.qry.head);
 951			html("</select> ");
 952			html("<input type='submit' name='' value='switch'/>");
 953			html("</form>");
 954		}
 955	} else
 956		html_txt(ctx.cfg.root_title);
 957	html("</td></tr>\n");
 958
 959	html("<tr><td class='sub'>");
 960	if (ctx.repo) {
 961		html_txt(ctx.repo->desc);
 962		html("</td><td class='sub right'>");
 963		html_txt(ctx.repo->owner);
 964	} else {
 965		if (ctx.cfg.root_desc)
 966			html_txt(ctx.cfg.root_desc);
 967		else if (ctx.cfg.index_info)
 968			html_include(ctx.cfg.index_info);
 969	}
 970	html("</td></tr></table>\n");
 971}
 972
 973void cgit_print_pageheader(void)
 974{
 975	html("<div id='cgit'>");
 976	if (!ctx.env.authenticated || !ctx.cfg.noheader)
 977		print_header();
 978
 979	html("<table class='tabs'><tr><td>\n");
 980	if (ctx.env.authenticated && ctx.repo) {
 981		if (ctx.repo->readme.nr)
 982			reporevlink("about", "about", NULL,
 983				    hc("about"), ctx.qry.head, NULL,
 984				    NULL);
 985		cgit_summary_link("summary", NULL, hc("summary"),
 986				  ctx.qry.head);
 987		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
 988			       ctx.qry.sha1, NULL);
 989		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 990			      NULL, ctx.qry.vpath, 0, NULL, NULL,
 991			      ctx.qry.showmsg, ctx.qry.follow);
 992		cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
 993			       ctx.qry.sha1, ctx.qry.vpath);
 994		cgit_commit_link("commit", NULL, hc("commit"),
 995				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
 996		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
 997			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
 998		if (ctx.repo->max_stats)
 999			cgit_stats_link("stats", NULL, hc("stats"),
1000					ctx.qry.head, ctx.qry.vpath);
1001		html("</td><td class='form'>");
1002		html("<form class='right' method='get' action='");
1003		if (ctx.cfg.virtual_root) {
1004			char *fileurl = cgit_fileurl(ctx.qry.repo, "log",
1005						   ctx.qry.vpath, NULL);
1006			html_url_path(fileurl);
1007			free(fileurl);
1008		}
1009		html("'>\n");
1010		cgit_add_hidden_formfields(1, 0, "log");
1011		html("<select name='qt'>\n");
1012		html_option("grep", "log msg", ctx.qry.grep);
1013		html_option("author", "author", ctx.qry.grep);
1014		html_option("committer", "committer", ctx.qry.grep);
1015		html_option("range", "range", ctx.qry.grep);
1016		html("</select>\n");
1017		html("<input class='txt' type='text' size='10' name='q' value='");
1018		html_attr(ctx.qry.search);
1019		html("'/>\n");
1020		html("<input type='submit' value='search'/>\n");
1021		html("</form>\n");
1022	} else if (ctx.env.authenticated) {
1023		site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
1024		if (ctx.cfg.root_readme)
1025			site_link("about", "about", NULL, hc("about"),
1026				  NULL, NULL, 0, 1);
1027		html("</td><td class='form'>");
1028		html("<form method='get' action='");
1029		html_attr(cgit_currenturl());
1030		html("'>\n");
1031		html("<input type='text' name='q' size='10' value='");
1032		html_attr(ctx.qry.search);
1033		html("'/>\n");
1034		html("<input type='submit' value='search'/>\n");
1035		html("</form>");
1036	}
1037	html("</td></tr></table>\n");
1038	if (ctx.env.authenticated && ctx.qry.vpath) {
1039		html("<div class='path'>");
1040		html("path: ");
1041		cgit_print_path_crumbs(ctx.qry.vpath);
1042		if (ctx.cfg.enable_follow_links && !strcmp(ctx.qry.page, "log")) {
1043			html(" (");
1044			ctx.qry.follow = !ctx.qry.follow;
1045			cgit_self_link(ctx.qry.follow ? "follow" : "unfollow",
1046					NULL, NULL);
1047			ctx.qry.follow = !ctx.qry.follow;
1048			html(")");
1049		}
1050		html("</div>");
1051	}
1052	html("<div class='content'>");
1053}
1054
1055void cgit_print_filemode(unsigned short mode)
1056{
1057	if (S_ISDIR(mode))
1058		html("d");
1059	else if (S_ISLNK(mode))
1060		html("l");
1061	else if (S_ISGITLINK(mode))
1062		html("m");
1063	else
1064		html("-");
1065	html_fileperm(mode >> 6);
1066	html_fileperm(mode >> 3);
1067	html_fileperm(mode);
1068}
1069
1070void cgit_print_snapshot_links(const char *repo, const char *head,
1071			       const char *hex, int snapshots)
1072{
1073	const struct cgit_snapshot_format* f;
1074	struct strbuf filename = STRBUF_INIT;
1075	size_t prefixlen;
1076	unsigned char sha1[20];
1077
1078	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
1079	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
1080		hex++;
1081	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
1082	prefixlen = filename.len;
1083	for (f = cgit_snapshot_formats; f->suffix; f++) {
1084		if (!(snapshots & f->bit))
1085			continue;
1086		strbuf_setlen(&filename, prefixlen);
1087		strbuf_addstr(&filename, f->suffix);
1088		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
1089				   filename.buf);
1090		html("<br/>");
1091	}
1092	strbuf_release(&filename);
1093}