ui-shared.c

   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
  14 static 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
  18 static 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
  31 void 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
  39 void 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
  49 const 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
  57 const 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
  68 const 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
  79 const 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
  87 const 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
  95 char *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
 103 char *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
 123 char *cgit_pageurl(const char *reponame, const char *pagename,
 124                    const char *query)
 125 {
 126         return cgit_fileurl(reponame, pagename, NULL, query);
 127 }
 128
 129 const 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
 154 static 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
 185 static 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
 206 void 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
 212 static 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
 263 static 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
 280 void 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
 286 void 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
 292 void 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
 298 void 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
 304 void 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
 347 void 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
 394 void 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
 400 void 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
 407 void 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
 451 void 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
 457 void 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
 463 static 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
 521 void 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
 542 static 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
 557 void 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
 607 static 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
 622 void cgit_print_date(time_t secs, const char *format, int local_time)
 623 {
 624         html_txt(fmt_date(secs, format, local_time));
 625 }
 626
 627 static 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
 635 void 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
 678 void 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
 706 void 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
 713 static 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
 722 void 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                 struct strbuf sb = STRBUF_INIT;
 750                 strbuf_addf(&sb, "h=%s", ctx.qry.head);
 751
 752                 html("<link rel='alternate' title='Atom feed' href='");
 753                 html(cgit_httpscheme());
 754                 html_attr(cgit_hosturl());
 755                 html_attr(cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
 756                                        sb.buf));
 757                 html("' type='application/atom+xml'/>\n");
 758                 strbuf_release(&sb);
 759         }
 760         if (ctx.repo)
 761                 cgit_add_clone_urls(print_rel_vcs_link);
 762         if (ctx.cfg.head_include)
 763                 html_include(ctx.cfg.head_include);
 764         html("</head>\n");
 765         html("<body>\n");
 766         if (ctx.cfg.header)
 767                 html_include(ctx.cfg.header);
 768 }
 769
 770 void cgit_print_docend(void)
 771 {
 772         html("</div> <!-- class=content -->\n");
 773         if (ctx.cfg.embedded) {
 774                 html("</div> <!-- id=cgit -->\n");
 775                 if (ctx.cfg.footer)
 776                         html_include(ctx.cfg.footer);
 777                 return;
 778         }
 779         if (ctx.cfg.footer)
 780                 html_include(ctx.cfg.footer);
 781         else {
 782                 htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 783                         cgit_version);
 784                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 785                 html("</div>\n");
 786         }
 787         html("</div> <!-- id=cgit -->\n");
 788         html("</body>\n</html>\n");
 789 }
 790
 791 static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 792 {
 793         struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
 794         int i;
 795
 796         for (i = 0; url_list[i]; i++) {
 797                 strbuf_rtrim(url_list[i]);
 798                 if (url_list[i]->len == 0)
 799                         continue;
 800                 if (suffix && *suffix)
 801                         strbuf_addf(url_list[i], "/%s", suffix);
 802                 fn(url_list[i]->buf);
 803         }
 804
 805         strbuf_list_free(url_list);
 806 }
 807
 808 void cgit_add_clone_urls(void (*fn)(const char *))
 809 {
 810         if (ctx.repo->clone_url)
 811                 add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
 812         else if (ctx.cfg.clone_prefix)
 813                 add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 814 }
 815
 816 static int print_branch_option(const char *refname, const struct object_id *oid,
 817                                int flags, void *cb_data)
 818 {
 819         char *name = (char *)refname;
 820         html_option(name, name, ctx.qry.head);
 821         return 0;
 822 }
 823
 824 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 825                                 const char *page)
 826 {
 827         if (!ctx.cfg.virtual_root) {
 828                 struct strbuf url = STRBUF_INIT;
 829
 830                 strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 831                 if (ctx.qry.vpath)
 832                         strbuf_addf(&url, "/%s", ctx.qry.vpath);
 833                 html_hidden("url", url.buf);
 834                 strbuf_release(&url);
 835         }
 836
 837         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 838             strcmp(ctx.qry.head, ctx.repo->defbranch))
 839                 html_hidden("h", ctx.qry.head);
 840
 841         if (ctx.qry.sha1)
 842                 html_hidden("id", ctx.qry.sha1);
 843         if (ctx.qry.sha2)
 844                 html_hidden("id2", ctx.qry.sha2);
 845         if (ctx.qry.showmsg)
 846                 html_hidden("showmsg", "1");
 847
 848         if (incl_search) {
 849                 if (ctx.qry.grep)
 850                         html_hidden("qt", ctx.qry.grep);
 851                 if (ctx.qry.search)
 852                         html_hidden("q", ctx.qry.search);
 853         }
 854 }
 855
 856 static const char *hc(const char *page)
 857 {
 858         return strcmp(ctx.qry.page, page) ? NULL : "active";
 859 }
 860
 861 static void cgit_print_path_crumbs(char *path)
 862 {
 863         char *old_path = ctx.qry.path;
 864         char *p = path, *q, *end = path + strlen(path);
 865
 866         ctx.qry.path = NULL;
 867         cgit_self_link("root", NULL, NULL);
 868         ctx.qry.path = p = path;
 869         while (p < end) {
 870                 if (!(q = strchr(p, '/')))
 871                         q = end;
 872                 *q = '\0';
 873                 html_txt("/");
 874                 cgit_self_link(p, NULL, NULL);
 875                 if (q < end)
 876                         *q = '/';
 877                 p = q + 1;
 878         }
 879         ctx.qry.path = old_path;
 880 }
 881
 882 static void print_header(void)
 883 {
 884         char *logo = NULL, *logo_link = NULL;
 885
 886         html("<table id='header'>\n");
 887         html("<tr>\n");
 888
 889         if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
 890                 logo = ctx.repo->logo;
 891         else
 892                 logo = ctx.cfg.logo;
 893         if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
 894                 logo_link = ctx.repo->logo_link;
 895         else
 896                 logo_link = ctx.cfg.logo_link;
 897         if (logo && *logo) {
 898                 html("<td class='logo' rowspan='2'><a href='");
 899                 if (logo_link && *logo_link)
 900                         html_attr(logo_link);
 901                 else
 902                         html_attr(cgit_rooturl());
 903                 html("'><img src='");
 904                 html_attr(logo);
 905                 html("' alt='cgit logo'/></a></td>\n");
 906         }
 907
 908         html("<td class='main'>");
 909         if (ctx.repo) {
 910                 cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 911                 html(" : ");
 912                 cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
 913                 if (ctx.env.authenticated) {
 914                         html("</td><td class='form'>");
 915                         html("<form method='get' action=''>\n");
 916                         cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 917                         html("<select name='h' onchange='this.form.submit();'>\n");
 918                         for_each_branch_ref(print_branch_option, ctx.qry.head);
 919                         if (ctx.repo->enable_remote_branches)
 920                                 for_each_remote_ref(print_branch_option, ctx.qry.head);
 921                         html("</select> ");
 922                         html("<input type='submit' name='' value='switch'/>");
 923                         html("</form>");
 924                 }
 925         } else
 926                 html_txt(ctx.cfg.root_title);
 927         html("</td></tr>\n");
 928
 929         html("<tr><td class='sub'>");
 930         if (ctx.repo) {
 931                 html_txt(ctx.repo->desc);
 932                 html("</td><td class='sub right'>");
 933                 html_txt(ctx.repo->owner);
 934         } else {
 935                 if (ctx.cfg.root_desc)
 936                         html_txt(ctx.cfg.root_desc);
 937                 else if (ctx.cfg.index_info)
 938                         html_include(ctx.cfg.index_info);
 939         }
 940         html("</td></tr></table>\n");
 941 }
 942
 943 void cgit_print_pageheader(void)
 944 {
 945         html("<div id='cgit'>");
 946         if (!ctx.env.authenticated || !ctx.cfg.noheader)
 947                 print_header();
 948
 949         html("<table class='tabs'><tr><td>\n");
 950         if (ctx.env.authenticated && ctx.repo) {
 951                 if (ctx.repo->readme.nr)
 952                         reporevlink("about", "about", NULL,
 953                                     hc("about"), ctx.qry.head, NULL,
 954                                     NULL);
 955                 cgit_summary_link("summary", NULL, hc("summary"),
 956                                   ctx.qry.head);
 957                 cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
 958                                ctx.qry.sha1, NULL);
 959                 cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 960                               NULL, ctx.qry.vpath, 0, NULL, NULL,
 961                               ctx.qry.showmsg, ctx.qry.follow);
 962                 cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
 963                                ctx.qry.sha1, ctx.qry.vpath);
 964                 cgit_commit_link("commit", NULL, hc("commit"),
 965                                  ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
 966                 cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
 967                                ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
 968                 if (ctx.repo->max_stats)
 969                         cgit_stats_link("stats", NULL, hc("stats"),
 970                                         ctx.qry.head, ctx.qry.vpath);
 971                 html("</td><td class='form'>");
 972                 html("<form class='right' method='get' action='");
 973                 if (ctx.cfg.virtual_root)
 974                         html_url_path(cgit_fileurl(ctx.qry.repo, "log",
 975                                                    ctx.qry.vpath, NULL));
 976                 html("'>\n");
 977                 cgit_add_hidden_formfields(1, 0, "log");
 978                 html("<select name='qt'>\n");
 979                 html_option("grep", "log msg", ctx.qry.grep);
 980                 html_option("author", "author", ctx.qry.grep);
 981                 html_option("committer", "committer", ctx.qry.grep);
 982                 html_option("range", "range", ctx.qry.grep);
 983                 html("</select>\n");
 984                 html("<input class='txt' type='text' size='10' name='q' value='");
 985                 html_attr(ctx.qry.search);
 986                 html("'/>\n");
 987                 html("<input type='submit' value='search'/>\n");
 988                 html("</form>\n");
 989         } else if (ctx.env.authenticated) {
 990                 site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
 991                 if (ctx.cfg.root_readme)
 992                         site_link("about", "about", NULL, hc("about"),
 993                                   NULL, NULL, 0, 1);
 994                 html("</td><td class='form'>");
 995                 html("<form method='get' action='");
 996                 html_attr(cgit_currenturl());
 997                 html("'>\n");
 998                 html("<input type='text' name='q' size='10' value='");
 999                 html_attr(ctx.qry.search);
1000                 html("'/>\n");
1001                 html("<input type='submit' value='search'/>\n");
1002                 html("</form>");
1003         }
1004         html("</td></tr></table>\n");
1005         if (ctx.env.authenticated && ctx.qry.vpath) {
1006                 html("<div class='path'>");
1007                 html("path: ");
1008                 cgit_print_path_crumbs(ctx.qry.vpath);
1009                 if (ctx.cfg.enable_follow_links && !strcmp(ctx.qry.page, "log")) {
1010                         html(" (");
1011                         ctx.qry.follow = !ctx.qry.follow;
1012                         cgit_self_link(ctx.qry.follow ? "follow" : "unfollow",
1013                                         NULL, NULL);
1014                         ctx.qry.follow = !ctx.qry.follow;
1015                         html(")");
1016                 }
1017                 html("</div>");
1018         }
1019         html("<div class='content'>");
1020 }
1021
1022 void cgit_print_filemode(unsigned short mode)
1023 {
1024         if (S_ISDIR(mode))
1025                 html("d");
1026         else if (S_ISLNK(mode))
1027                 html("l");
1028         else if (S_ISGITLINK(mode))
1029                 html("m");
1030         else
1031                 html("-");
1032         html_fileperm(mode >> 6);
1033         html_fileperm(mode >> 3);
1034         html_fileperm(mode);
1035 }
1036
1037 void cgit_print_snapshot_links(const char *repo, const char *head,
1038                                const char *hex, int snapshots)
1039 {
1040         const struct cgit_snapshot_format* f;
1041         struct strbuf filename = STRBUF_INIT;
1042         size_t prefixlen;
1043         unsigned char sha1[20];
1044
1045         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
1046             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
1047                 hex++;
1048         strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
1049         prefixlen = filename.len;
1050         for (f = cgit_snapshot_formats; f->suffix; f++) {
1051                 if (!(snapshots & f->bit))
1052                         continue;
1053                 strbuf_setlen(&filename, prefixlen);
1054                 strbuf_addstr(&filename, f->suffix);
1055                 cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
1056                                    filename.buf);
1057                 html("<br/>");
1058         }
1059         strbuf_release(&filename);
1060 }