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