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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
  57char *cgit_hosturl(void)
  58{
  59	if (ctx.env.http_host)
  60		return xstrdup(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 xstrdup(ctx.env.server_name);
  65	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
  66}
  67
  68char *cgit_currenturl(void)
  69{
  70	if (!ctx.qry.url)
  71		return xstrdup(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		char *currenturl = cgit_currenturl();
 162		html_attr(currenturl);
 163		free(currenturl);
 164	}
 165
 166	if (page) {
 167		htmlf("?p=%s", page);
 168		delim = "&amp;";
 169	}
 170	if (search) {
 171		html(delim);
 172		html("q=");
 173		html_attr(search);
 174		delim = "&amp;";
 175	}
 176	if (sort) {
 177		html(delim);
 178		html("s=");
 179		html_attr(sort);
 180		delim = "&amp;";
 181	}
 182	if (ofs) {
 183		html(delim);
 184		htmlf("ofs=%d", ofs);
 185	}
 186}
 187
 188static void site_link(const char *page, const char *name, const char *title,
 189		      const char *class, const char *search, const char *sort, int ofs, int always_root)
 190{
 191	html("<a");
 192	if (title) {
 193		html(" title='");
 194		html_attr(title);
 195		html("'");
 196	}
 197	if (class) {
 198		html(" class='");
 199		html_attr(class);
 200		html("'");
 201	}
 202	html(" href='");
 203	site_url(page, search, sort, ofs, always_root);
 204	html("'>");
 205	html_txt(name);
 206	html("</a>");
 207}
 208
 209void cgit_index_link(const char *name, const char *title, const char *class,
 210		     const char *pattern, const char *sort, int ofs, int always_root)
 211{
 212	site_link(NULL, name, title, class, pattern, sort, ofs, always_root);
 213}
 214
 215static char *repolink(const char *title, const char *class, const char *page,
 216		      const char *head, const char *path)
 217{
 218	char *delim = "?";
 219
 220	html("<a");
 221	if (title) {
 222		html(" title='");
 223		html_attr(title);
 224		html("'");
 225	}
 226	if (class) {
 227		html(" class='");
 228		html_attr(class);
 229		html("'");
 230	}
 231	html(" href='");
 232	if (ctx.cfg.virtual_root) {
 233		html_url_path(ctx.cfg.virtual_root);
 234		html_url_path(ctx.repo->url);
 235		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 236			html("/");
 237		if (page) {
 238			html_url_path(page);
 239			html("/");
 240			if (path)
 241				html_url_path(path);
 242		}
 243	} else {
 244		html_url_path(ctx.cfg.script_name);
 245		html("?url=");
 246		html_url_arg(ctx.repo->url);
 247		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 248			html("/");
 249		if (page) {
 250			html_url_arg(page);
 251			html("/");
 252			if (path)
 253				html_url_arg(path);
 254		}
 255		delim = "&amp;";
 256	}
 257	if (head && strcmp(head, ctx.repo->defbranch)) {
 258		html(delim);
 259		html("h=");
 260		html_url_arg(head);
 261		delim = "&amp;";
 262	}
 263	return fmt("%s", delim);
 264}
 265
 266static void reporevlink(const char *page, const char *name, const char *title,
 267			const char *class, const char *head, const char *rev,
 268			const char *path)
 269{
 270	char *delim;
 271
 272	delim = repolink(title, class, page, head, path);
 273	if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 274		html(delim);
 275		html("id=");
 276		html_url_arg(rev);
 277	}
 278	html("'>");
 279	html_txt(name);
 280	html("</a>");
 281}
 282
 283void cgit_summary_link(const char *name, const char *title, const char *class,
 284		       const char *head)
 285{
 286	reporevlink(NULL, name, title, class, head, NULL, NULL);
 287}
 288
 289void cgit_tag_link(const char *name, const char *title, const char *class,
 290		   const char *tag)
 291{
 292	reporevlink("tag", name, title, class, tag, NULL, NULL);
 293}
 294
 295void cgit_tree_link(const char *name, const char *title, const char *class,
 296		    const char *head, const char *rev, const char *path)
 297{
 298	reporevlink("tree", name, title, class, head, rev, path);
 299}
 300
 301void cgit_plain_link(const char *name, const char *title, const char *class,
 302		     const char *head, const char *rev, const char *path)
 303{
 304	reporevlink("plain", name, title, class, head, rev, path);
 305}
 306
 307void cgit_log_link(const char *name, const char *title, const char *class,
 308		   const char *head, const char *rev, const char *path,
 309		   int ofs, const char *grep, const char *pattern, int showmsg,
 310		   int follow)
 311{
 312	char *delim;
 313
 314	delim = repolink(title, class, "log", head, path);
 315	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 316		html(delim);
 317		html("id=");
 318		html_url_arg(rev);
 319		delim = "&amp;";
 320	}
 321	if (grep && pattern) {
 322		html(delim);
 323		html("qt=");
 324		html_url_arg(grep);
 325		delim = "&amp;";
 326		html(delim);
 327		html("q=");
 328		html_url_arg(pattern);
 329	}
 330	if (ofs > 0) {
 331		html(delim);
 332		html("ofs=");
 333		htmlf("%d", ofs);
 334		delim = "&amp;";
 335	}
 336	if (showmsg) {
 337		html(delim);
 338		html("showmsg=1");
 339		delim = "&amp;";
 340	}
 341	if (follow) {
 342		html(delim);
 343		html("follow=1");
 344	}
 345	html("'>");
 346	html_txt(name);
 347	html("</a>");
 348}
 349
 350void cgit_commit_link(char *name, const char *title, const char *class,
 351		      const char *head, const char *rev, const char *path)
 352{
 353	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 354		name[ctx.cfg.max_msg_len] = '\0';
 355		name[ctx.cfg.max_msg_len - 1] = '.';
 356		name[ctx.cfg.max_msg_len - 2] = '.';
 357		name[ctx.cfg.max_msg_len - 3] = '.';
 358	}
 359
 360	char *delim;
 361
 362	delim = repolink(title, class, "commit", head, path);
 363	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 364		html(delim);
 365		html("id=");
 366		html_url_arg(rev);
 367		delim = "&amp;";
 368	}
 369	if (ctx.qry.difftype) {
 370		html(delim);
 371		htmlf("dt=%d", ctx.qry.difftype);
 372		delim = "&amp;";
 373	}
 374	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 375		html(delim);
 376		html("context=");
 377		htmlf("%d", ctx.qry.context);
 378		delim = "&amp;";
 379	}
 380	if (ctx.qry.ignorews) {
 381		html(delim);
 382		html("ignorews=1");
 383		delim = "&amp;";
 384	}
 385	if (ctx.qry.follow) {
 386		html(delim);
 387		html("follow=1");
 388	}
 389	html("'>");
 390	if (name[0] != '\0')
 391		html_txt(name);
 392	else
 393		html_txt("(no commit message)");
 394	html("</a>");
 395}
 396
 397void cgit_refs_link(const char *name, const char *title, const char *class,
 398		    const char *head, const char *rev, const char *path)
 399{
 400	reporevlink("refs", name, title, class, head, rev, path);
 401}
 402
 403void cgit_snapshot_link(const char *name, const char *title, const char *class,
 404			const char *head, const char *rev,
 405			const char *archivename)
 406{
 407	reporevlink("snapshot", name, title, class, head, rev, archivename);
 408}
 409
 410void cgit_diff_link(const char *name, const char *title, const char *class,
 411		    const char *head, const char *new_rev, const char *old_rev,
 412		    const char *path)
 413{
 414	char *delim;
 415
 416	delim = repolink(title, class, "diff", head, path);
 417	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 418		html(delim);
 419		html("id=");
 420		html_url_arg(new_rev);
 421		delim = "&amp;";
 422	}
 423	if (old_rev) {
 424		html(delim);
 425		html("id2=");
 426		html_url_arg(old_rev);
 427		delim = "&amp;";
 428	}
 429	if (ctx.qry.difftype) {
 430		html(delim);
 431		htmlf("dt=%d", ctx.qry.difftype);
 432		delim = "&amp;";
 433	}
 434	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 435		html(delim);
 436		html("context=");
 437		htmlf("%d", ctx.qry.context);
 438		delim = "&amp;";
 439	}
 440	if (ctx.qry.ignorews) {
 441		html(delim);
 442		html("ignorews=1");
 443		delim = "&amp;";
 444	}
 445	if (ctx.qry.follow) {
 446		html(delim);
 447		html("follow=1");
 448	}
 449	html("'>");
 450	html_txt(name);
 451	html("</a>");
 452}
 453
 454void cgit_patch_link(const char *name, const char *title, const char *class,
 455		     const char *head, const char *rev, const char *path)
 456{
 457	reporevlink("patch", name, title, class, head, rev, path);
 458}
 459
 460void cgit_stats_link(const char *name, const char *title, const char *class,
 461		     const char *head, const char *path)
 462{
 463	reporevlink("stats", name, title, class, head, NULL, path);
 464}
 465
 466static void cgit_self_link(char *name, const char *title, const char *class)
 467{
 468	if (!strcmp(ctx.qry.page, "repolist"))
 469		cgit_index_link(name, title, class, ctx.qry.search, ctx.qry.sort,
 470				ctx.qry.ofs, 1);
 471	else if (!strcmp(ctx.qry.page, "summary"))
 472		cgit_summary_link(name, title, class, ctx.qry.head);
 473	else if (!strcmp(ctx.qry.page, "tag"))
 474		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
 475			       ctx.qry.sha1 : ctx.qry.head);
 476	else if (!strcmp(ctx.qry.page, "tree"))
 477		cgit_tree_link(name, title, class, ctx.qry.head,
 478			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 479			       ctx.qry.path);
 480	else if (!strcmp(ctx.qry.page, "plain"))
 481		cgit_plain_link(name, title, class, ctx.qry.head,
 482				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 483				ctx.qry.path);
 484	else if (!strcmp(ctx.qry.page, "log"))
 485		cgit_log_link(name, title, class, ctx.qry.head,
 486			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 487			      ctx.qry.path, ctx.qry.ofs,
 488			      ctx.qry.grep, ctx.qry.search,
 489			      ctx.qry.showmsg, ctx.qry.follow);
 490	else if (!strcmp(ctx.qry.page, "commit"))
 491		cgit_commit_link(name, title, class, ctx.qry.head,
 492				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 493				 ctx.qry.path);
 494	else if (!strcmp(ctx.qry.page, "patch"))
 495		cgit_patch_link(name, title, class, ctx.qry.head,
 496				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 497				ctx.qry.path);
 498	else if (!strcmp(ctx.qry.page, "refs"))
 499		cgit_refs_link(name, title, class, ctx.qry.head,
 500			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 501			       ctx.qry.path);
 502	else if (!strcmp(ctx.qry.page, "snapshot"))
 503		cgit_snapshot_link(name, title, class, ctx.qry.head,
 504				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 505				   ctx.qry.path);
 506	else if (!strcmp(ctx.qry.page, "diff"))
 507		cgit_diff_link(name, title, class, ctx.qry.head,
 508			       ctx.qry.sha1, ctx.qry.sha2,
 509			       ctx.qry.path);
 510	else if (!strcmp(ctx.qry.page, "stats"))
 511		cgit_stats_link(name, title, class, ctx.qry.head,
 512				ctx.qry.path);
 513	else {
 514		/* Don't known how to make link for this page */
 515		repolink(title, class, ctx.qry.page, ctx.qry.head, ctx.qry.path);
 516		html("><!-- cgit_self_link() doesn't know how to make link for page '");
 517		html_txt(ctx.qry.page);
 518		html("' -->");
 519		html_txt(name);
 520		html("</a>");
 521	}
 522}
 523
 524void cgit_object_link(struct object *obj)
 525{
 526	char *page, *shortrev, *fullrev, *name;
 527
 528	fullrev = oid_to_hex(&obj->oid);
 529	shortrev = xstrdup(fullrev);
 530	shortrev[10] = '\0';
 531	if (obj->type == OBJ_COMMIT) {
 532		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 533				 ctx.qry.head, fullrev, NULL);
 534		return;
 535	} else if (obj->type == OBJ_TREE)
 536		page = "tree";
 537	else if (obj->type == OBJ_TAG)
 538		page = "tag";
 539	else
 540		page = "blob";
 541	name = fmt("%s %s...", typename(obj->type), shortrev);
 542	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 543}
 544
 545static struct string_list_item *lookup_path(struct string_list *list,
 546					    const char *path)
 547{
 548	struct string_list_item *item;
 549
 550	while (path && path[0]) {
 551		if ((item = string_list_lookup(list, path)))
 552			return item;
 553		if (!(path = strchr(path, '/')))
 554			break;
 555		path++;
 556	}
 557	return NULL;
 558}
 559
 560void cgit_submodule_link(const char *class, char *path, const char *rev)
 561{
 562	struct string_list *list;
 563	struct string_list_item *item;
 564	char tail, *dir;
 565	size_t len;
 566
 567	len = 0;
 568	tail = 0;
 569	list = &ctx.repo->submodules;
 570	item = lookup_path(list, path);
 571	if (!item) {
 572		len = strlen(path);
 573		tail = path[len - 1];
 574		if (tail == '/') {
 575			path[len - 1] = 0;
 576			item = lookup_path(list, path);
 577		}
 578	}
 579	if (item || ctx.repo->module_link) {
 580		html("<a ");
 581		if (class)
 582			htmlf("class='%s' ", class);
 583		html("href='");
 584		if (item) {
 585			html_attrf(item->util, rev);
 586		} else {
 587			dir = strrchr(path, '/');
 588			if (dir)
 589				dir++;
 590			else
 591				dir = path;
 592			html_attrf(ctx.repo->module_link, dir, rev);
 593		}
 594		html("'>");
 595		html_txt(path);
 596		html("</a>");
 597	} else {
 598		html("<span");
 599		if (class)
 600			htmlf(" class='%s'", class);
 601		html(">");
 602		html_txt(path);
 603		html("</span>");
 604	}
 605	html_txtf(" @ %.7s", rev);
 606	if (item && tail)
 607		path[len - 1] = tail;
 608}
 609
 610const struct date_mode *cgit_date_mode(enum date_mode_type type)
 611{
 612	static struct date_mode mode;
 613	mode.type = type;
 614	mode.local = ctx.cfg.local_time;
 615	return &mode;
 616}
 617
 618static void print_rel_date(time_t t, int tz, double value,
 619	const char *class, const char *suffix)
 620{
 621	htmlf("<span class='%s' title='", class);
 622	html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 623	htmlf("'>%.0f %s</span>", value, suffix);
 624}
 625
 626void cgit_print_age(time_t t, int tz, time_t max_relative)
 627{
 628	time_t now, secs;
 629
 630	if (!t)
 631		return;
 632	time(&now);
 633	secs = now - t;
 634	if (secs < 0)
 635		secs = 0;
 636
 637	if (secs > max_relative && max_relative >= 0) {
 638		html("<span title='");
 639		html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 640		html("'>");
 641		html_txt(show_date(t, tz, cgit_date_mode(DATE_SHORT)));
 642		html("</span>");
 643		return;
 644	}
 645
 646	if (secs < TM_HOUR * 2) {
 647		print_rel_date(t, tz, secs * 1.0 / TM_MIN, "age-mins", "min.");
 648		return;
 649	}
 650	if (secs < TM_DAY * 2) {
 651		print_rel_date(t, tz, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 652		return;
 653	}
 654	if (secs < TM_WEEK * 2) {
 655		print_rel_date(t, tz, secs * 1.0 / TM_DAY, "age-days", "days");
 656		return;
 657	}
 658	if (secs < TM_MONTH * 2) {
 659		print_rel_date(t, tz, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 660		return;
 661	}
 662	if (secs < TM_YEAR * 2) {
 663		print_rel_date(t, tz, secs * 1.0 / TM_MONTH, "age-months", "months");
 664		return;
 665	}
 666	print_rel_date(t, tz, secs * 1.0 / TM_YEAR, "age-years", "years");
 667}
 668
 669void cgit_print_http_headers(void)
 670{
 671	if (ctx.env.no_http && !strcmp(ctx.env.no_http, "1"))
 672		return;
 673
 674	if (ctx.page.status)
 675		htmlf("Status: %d %s\n", ctx.page.status, ctx.page.statusmsg);
 676	if (ctx.page.mimetype && ctx.page.charset)
 677		htmlf("Content-Type: %s; charset=%s\n", ctx.page.mimetype,
 678		      ctx.page.charset);
 679	else if (ctx.page.mimetype)
 680		htmlf("Content-Type: %s\n", ctx.page.mimetype);
 681	if (ctx.page.size)
 682		htmlf("Content-Length: %zd\n", ctx.page.size);
 683	if (ctx.page.filename) {
 684		html("Content-Disposition: inline; filename=\"");
 685		html_header_arg_in_quotes(ctx.page.filename);
 686		html("\"\n");
 687	}
 688	if (!ctx.env.authenticated)
 689		html("Cache-Control: no-cache, no-store\n");
 690	htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
 691	htmlf("Expires: %s\n", http_date(ctx.page.expires));
 692	if (ctx.page.etag)
 693		htmlf("ETag: \"%s\"\n", ctx.page.etag);
 694	html("\n");
 695	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
 696		exit(0);
 697}
 698
 699void cgit_redirect(const char *url, bool permanent)
 700{
 701	htmlf("Status: %d %s\n", permanent ? 301 : 302, permanent ? "Moved" : "Found");
 702	html("Location: ");
 703	html_url_path(url);
 704	html("\n\n");
 705}
 706
 707static void print_rel_vcs_link(const char *url)
 708{
 709	html("<link rel='vcs-git' href='");
 710	html_attr(url);
 711	html("' title='");
 712	html_attr(ctx.repo->name);
 713	html(" Git repository'/>\n");
 714}
 715
 716void cgit_print_docstart(void)
 717{
 718	if (ctx.cfg.embedded) {
 719		if (ctx.cfg.header)
 720			html_include(ctx.cfg.header);
 721		return;
 722	}
 723
 724	char *host = cgit_hosturl();
 725	html(cgit_doctype);
 726	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 727	html("<head>\n");
 728	html("<title>");
 729	html_txt(ctx.page.title);
 730	html("</title>\n");
 731	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 732	if (ctx.cfg.robots && *ctx.cfg.robots)
 733		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
 734	html("<link rel='stylesheet' type='text/css' href='");
 735	html_attr(ctx.cfg.css);
 736	html("'/>\n");
 737	if (ctx.cfg.favicon) {
 738		html("<link rel='shortcut icon' href='");
 739		html_attr(ctx.cfg.favicon);
 740		html("'/>\n");
 741	}
 742	if (host && ctx.repo && ctx.qry.head) {
 743		char *fileurl;
 744		struct strbuf sb = STRBUF_INIT;
 745		strbuf_addf(&sb, "h=%s", ctx.qry.head);
 746
 747		html("<link rel='alternate' title='Atom feed' href='");
 748		html(cgit_httpscheme());
 749		html_attr(host);
 750		fileurl = cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
 751				       sb.buf);
 752		html_attr(fileurl);
 753		html("' type='application/atom+xml'/>\n");
 754		strbuf_release(&sb);
 755		free(fileurl);
 756	}
 757	if (ctx.repo)
 758		cgit_add_clone_urls(print_rel_vcs_link);
 759	if (ctx.cfg.head_include)
 760		html_include(ctx.cfg.head_include);
 761	html("</head>\n");
 762	html("<body>\n");
 763	if (ctx.cfg.header)
 764		html_include(ctx.cfg.header);
 765	free(host);
 766}
 767
 768void cgit_print_docend(void)
 769{
 770	html("</div> <!-- class=content -->\n");
 771	if (ctx.cfg.embedded) {
 772		html("</div> <!-- id=cgit -->\n");
 773		if (ctx.cfg.footer)
 774			html_include(ctx.cfg.footer);
 775		return;
 776	}
 777	if (ctx.cfg.footer)
 778		html_include(ctx.cfg.footer);
 779	else {
 780		htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 781			cgit_version);
 782		html_txt(show_date(time(NULL), 0, cgit_date_mode(DATE_ISO8601)));
 783		html("</div>\n");
 784	}
 785	html("</div> <!-- id=cgit -->\n");
 786	html("</body>\n</html>\n");
 787}
 788
 789void cgit_print_error_page(int code, const char *msg, const char *fmt, ...)
 790{
 791	va_list ap;
 792	ctx.page.expires = ctx.cfg.cache_dynamic_ttl;
 793	ctx.page.status = code;
 794	ctx.page.statusmsg = msg;
 795	cgit_print_http_headers();
 796	cgit_print_docstart();
 797	cgit_print_pageheader();
 798	va_start(ap, fmt);
 799	cgit_vprint_error(fmt, ap);
 800	va_end(ap);
 801	cgit_print_docend();
 802}
 803
 804void cgit_print_layout_start(void)
 805{
 806	cgit_print_http_headers();
 807	cgit_print_docstart();
 808	cgit_print_pageheader();
 809}
 810
 811void cgit_print_layout_end(void)
 812{
 813	cgit_print_docend();
 814}
 815
 816static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 817{
 818	struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
 819	int i;
 820
 821	for (i = 0; url_list[i]; i++) {
 822		strbuf_rtrim(url_list[i]);
 823		if (url_list[i]->len == 0)
 824			continue;
 825		if (suffix && *suffix)
 826			strbuf_addf(url_list[i], "/%s", suffix);
 827		fn(url_list[i]->buf);
 828	}
 829
 830	strbuf_list_free(url_list);
 831}
 832
 833void cgit_add_clone_urls(void (*fn)(const char *))
 834{
 835	if (ctx.repo->clone_url)
 836		add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
 837	else if (ctx.cfg.clone_prefix)
 838		add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 839}
 840
 841static int print_branch_option(const char *refname, const struct object_id *oid,
 842			       int flags, void *cb_data)
 843{
 844	char *name = (char *)refname;
 845	html_option(name, name, ctx.qry.head);
 846	return 0;
 847}
 848
 849void cgit_add_hidden_formfields(int incl_head, int incl_search,
 850				const char *page)
 851{
 852	if (!ctx.cfg.virtual_root) {
 853		struct strbuf url = STRBUF_INIT;
 854
 855		strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 856		if (ctx.qry.vpath)
 857			strbuf_addf(&url, "/%s", ctx.qry.vpath);
 858		html_hidden("url", url.buf);
 859		strbuf_release(&url);
 860	}
 861
 862	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 863	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 864		html_hidden("h", ctx.qry.head);
 865
 866	if (ctx.qry.sha1)
 867		html_hidden("id", ctx.qry.sha1);
 868	if (ctx.qry.sha2)
 869		html_hidden("id2", ctx.qry.sha2);
 870	if (ctx.qry.showmsg)
 871		html_hidden("showmsg", "1");
 872
 873	if (incl_search) {
 874		if (ctx.qry.grep)
 875			html_hidden("qt", ctx.qry.grep);
 876		if (ctx.qry.search)
 877			html_hidden("q", ctx.qry.search);
 878	}
 879}
 880
 881static const char *hc(const char *page)
 882{
 883	if (!ctx.qry.page)
 884		return NULL;
 885
 886	return strcmp(ctx.qry.page, page) ? NULL : "active";
 887}
 888
 889static void cgit_print_path_crumbs(char *path)
 890{
 891	char *old_path = ctx.qry.path;
 892	char *p = path, *q, *end = path + strlen(path);
 893
 894	ctx.qry.path = NULL;
 895	cgit_self_link("root", NULL, NULL);
 896	ctx.qry.path = p = path;
 897	while (p < end) {
 898		if (!(q = strchr(p, '/')))
 899			q = end;
 900		*q = '\0';
 901		html_txt("/");
 902		cgit_self_link(p, NULL, NULL);
 903		if (q < end)
 904			*q = '/';
 905		p = q + 1;
 906	}
 907	ctx.qry.path = old_path;
 908}
 909
 910static void print_header(void)
 911{
 912	char *logo = NULL, *logo_link = NULL;
 913
 914	html("<table id='header'>\n");
 915	html("<tr>\n");
 916
 917	if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
 918		logo = ctx.repo->logo;
 919	else
 920		logo = ctx.cfg.logo;
 921	if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
 922		logo_link = ctx.repo->logo_link;
 923	else
 924		logo_link = ctx.cfg.logo_link;
 925	if (logo && *logo) {
 926		html("<td class='logo' rowspan='2'><a href='");
 927		if (logo_link && *logo_link)
 928			html_attr(logo_link);
 929		else
 930			html_attr(cgit_rooturl());
 931		html("'><img src='");
 932		html_attr(logo);
 933		html("' alt='cgit logo'/></a></td>\n");
 934	}
 935
 936	html("<td class='main'>");
 937	if (ctx.repo) {
 938		cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 939		html(" : ");
 940		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
 941		if (ctx.env.authenticated) {
 942			html("</td><td class='form'>");
 943			html("<form method='get' action=''>\n");
 944			cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 945			html("<select name='h' onchange='this.form.submit();'>\n");
 946			for_each_branch_ref(print_branch_option, ctx.qry.head);
 947			if (ctx.repo->enable_remote_branches)
 948				for_each_remote_ref(print_branch_option, ctx.qry.head);
 949			html("</select> ");
 950			html("<input type='submit' name='' value='switch'/>");
 951			html("</form>");
 952		}
 953	} else
 954		html_txt(ctx.cfg.root_title);
 955	html("</td></tr>\n");
 956
 957	html("<tr><td class='sub'>");
 958	if (ctx.repo) {
 959		html_txt(ctx.repo->desc);
 960		html("</td><td class='sub right'>");
 961		html_txt(ctx.repo->owner);
 962	} else {
 963		if (ctx.cfg.root_desc)
 964			html_txt(ctx.cfg.root_desc);
 965		else if (ctx.cfg.index_info)
 966			html_include(ctx.cfg.index_info);
 967	}
 968	html("</td></tr></table>\n");
 969}
 970
 971void cgit_print_pageheader(void)
 972{
 973	html("<div id='cgit'>");
 974	if (!ctx.env.authenticated || !ctx.cfg.noheader)
 975		print_header();
 976
 977	html("<table class='tabs'><tr><td>\n");
 978	if (ctx.env.authenticated && ctx.repo) {
 979		if (ctx.repo->readme.nr)
 980			reporevlink("about", "about", NULL,
 981				    hc("about"), ctx.qry.head, NULL,
 982				    NULL);
 983		cgit_summary_link("summary", NULL, hc("summary"),
 984				  ctx.qry.head);
 985		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
 986			       ctx.qry.sha1, NULL);
 987		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 988			      NULL, ctx.qry.vpath, 0, NULL, NULL,
 989			      ctx.qry.showmsg, ctx.qry.follow);
 990		cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
 991			       ctx.qry.sha1, ctx.qry.vpath);
 992		cgit_commit_link("commit", NULL, hc("commit"),
 993				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
 994		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
 995			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
 996		if (ctx.repo->max_stats)
 997			cgit_stats_link("stats", NULL, hc("stats"),
 998					ctx.qry.head, ctx.qry.vpath);
 999		if (ctx.repo->homepage) {
1000			html("<a href='");
1001			html_attr(ctx.repo->homepage);
1002			html("'>homepage</a>");
1003		}
1004		html("</td><td class='form'>");
1005		html("<form class='right' method='get' action='");
1006		if (ctx.cfg.virtual_root) {
1007			char *fileurl = cgit_fileurl(ctx.qry.repo, "log",
1008						   ctx.qry.vpath, NULL);
1009			html_url_path(fileurl);
1010			free(fileurl);
1011		}
1012		html("'>\n");
1013		cgit_add_hidden_formfields(1, 0, "log");
1014		html("<select name='qt'>\n");
1015		html_option("grep", "log msg", ctx.qry.grep);
1016		html_option("author", "author", ctx.qry.grep);
1017		html_option("committer", "committer", ctx.qry.grep);
1018		html_option("range", "range", ctx.qry.grep);
1019		html("</select>\n");
1020		html("<input class='txt' type='text' size='10' name='q' value='");
1021		html_attr(ctx.qry.search);
1022		html("'/>\n");
1023		html("<input type='submit' value='search'/>\n");
1024		html("</form>\n");
1025	} else if (ctx.env.authenticated) {
1026		char *currenturl = cgit_currenturl();
1027		site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
1028		if (ctx.cfg.root_readme)
1029			site_link("about", "about", NULL, hc("about"),
1030				  NULL, NULL, 0, 1);
1031		html("</td><td class='form'>");
1032		html("<form method='get' action='");
1033		html_attr(currenturl);
1034		html("'>\n");
1035		html("<input type='text' name='q' size='10' value='");
1036		html_attr(ctx.qry.search);
1037		html("'/>\n");
1038		html("<input type='submit' value='search'/>\n");
1039		html("</form>");
1040		free(currenturl);
1041	}
1042	html("</td></tr></table>\n");
1043	if (ctx.env.authenticated && ctx.qry.vpath) {
1044		html("<div class='path'>");
1045		html("path: ");
1046		cgit_print_path_crumbs(ctx.qry.vpath);
1047		if (ctx.cfg.enable_follow_links && !strcmp(ctx.qry.page, "log")) {
1048			html(" (");
1049			ctx.qry.follow = !ctx.qry.follow;
1050			cgit_self_link(ctx.qry.follow ? "follow" : "unfollow",
1051					NULL, NULL);
1052			ctx.qry.follow = !ctx.qry.follow;
1053			html(")");
1054		}
1055		html("</div>");
1056	}
1057	html("<div class='content'>");
1058}
1059
1060void cgit_print_filemode(unsigned short mode)
1061{
1062	if (S_ISDIR(mode))
1063		html("d");
1064	else if (S_ISLNK(mode))
1065		html("l");
1066	else if (S_ISGITLINK(mode))
1067		html("m");
1068	else
1069		html("-");
1070	html_fileperm(mode >> 6);
1071	html_fileperm(mode >> 3);
1072	html_fileperm(mode);
1073}
1074
1075void cgit_print_snapshot_links(const char *repo, const char *head,
1076			       const char *hex, int snapshots)
1077{
1078	const struct cgit_snapshot_format* f;
1079	struct strbuf filename = STRBUF_INIT;
1080	size_t prefixlen;
1081	unsigned char sha1[20];
1082
1083	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
1084	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
1085		hex++;
1086	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
1087	prefixlen = filename.len;
1088	for (f = cgit_snapshot_formats; f->suffix; f++) {
1089		if (!(snapshots & f->bit))
1090			continue;
1091		strbuf_setlen(&filename, prefixlen);
1092		strbuf_addstr(&filename, f->suffix);
1093		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
1094				   filename.buf);
1095		html("<br/>");
1096	}
1097	strbuf_release(&filename);
1098}