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