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