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