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 static const char cgit_doctype[] =
  15 "<!DOCTYPE html>\n";
  16
  17 static char *http_date(time_t t)
  18 {
  19         static char day[][4] =
  20                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  21         static char month[][4] =
  22                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  23                  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  24         struct tm *tm = gmtime(&t);
  25         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  26                    tm->tm_mday, month[tm->tm_mon], 1900 + tm->tm_year,
  27                    tm->tm_hour, tm->tm_min, tm->tm_sec);
  28 }
  29
  30 void cgit_print_error(const char *fmt, ...)
  31 {
  32         va_list ap;
  33         va_start(ap, fmt);
  34         cgit_vprint_error(fmt, ap);
  35         va_end(ap);
  36 }
  37
  38 void cgit_vprint_error(const char *fmt, va_list ap)
  39 {
  40         va_list cp;
  41         html("<div class='error'>");
  42         va_copy(cp, ap);
  43         html_vtxtf(fmt, cp);
  44         va_end(cp);
  45         html("</div>\n");
  46 }
  47
  48 const char *cgit_httpscheme(void)
  49 {
  50         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  51                 return "https://";
  52         else
  53                 return "http://";
  54 }
  55
  56 char *cgit_hosturl(void)
  57 {
  58         if (ctx.env.http_host)
  59                 return xstrdup(ctx.env.http_host);
  60         if (!ctx.env.server_name)
  61                 return NULL;
  62         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  63                 return xstrdup(ctx.env.server_name);
  64         return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
  65 }
  66
  67 char *cgit_currenturl(void)
  68 {
  69         const char *root = cgit_rooturl();
  70         size_t len = strlen(root);
  71
  72         if (!ctx.qry.url)
  73                 return xstrdup(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                 char *currenturl = cgit_currenturl();
 162                 html_attr(currenturl);
 163                 free(currenturl);
 164         }
 165
 166         if (page) {
 167                 htmlf("?p=%s", page);
 168                 delim = "&amp;";
 169         }
 170         if (search) {
 171                 html(delim);
 172                 html("q=");
 173                 html_attr(search);
 174                 delim = "&amp;";
 175         }
 176         if (sort) {
 177                 html(delim);
 178                 html("s=");
 179                 html_attr(sort);
 180                 delim = "&amp;";
 181         }
 182         if (ofs) {
 183                 html(delim);
 184                 htmlf("ofs=%d", ofs);
 185         }
 186 }
 187
 188 static void site_link(const char *page, const char *name, const char *title,
 189                       const char *class, const char *search, const char *sort, int ofs, int always_root)
 190 {
 191         html("<a");
 192         if (title) {
 193                 html(" title='");
 194                 html_attr(title);
 195                 html("'");
 196         }
 197         if (class) {
 198                 html(" class='");
 199                 html_attr(class);
 200                 html("'");
 201         }
 202         html(" href='");
 203         site_url(page, search, sort, ofs, always_root);
 204         html("'>");
 205         html_txt(name);
 206         html("</a>");
 207 }
 208
 209 void cgit_index_link(const char *name, const char *title, const char *class,
 210                      const char *pattern, const char *sort, int ofs, int always_root)
 211 {
 212         site_link(NULL, name, title, class, pattern, sort, ofs, always_root);
 213 }
 214
 215 static char *repolink(const char *title, const char *class, const char *page,
 216                       const char *head, const char *path)
 217 {
 218         char *delim = "?";
 219
 220         html("<a");
 221         if (title) {
 222                 html(" title='");
 223                 html_attr(title);
 224                 html("'");
 225         }
 226         if (class) {
 227                 html(" class='");
 228                 html_attr(class);
 229                 html("'");
 230         }
 231         html(" href='");
 232         if (ctx.cfg.virtual_root) {
 233                 html_url_path(ctx.cfg.virtual_root);
 234                 html_url_path(ctx.repo->url);
 235                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 236                         html("/");
 237                 if (page) {
 238                         html_url_path(page);
 239                         html("/");
 240                         if (path)
 241                                 html_url_path(path);
 242                 }
 243         } else {
 244                 html_url_path(ctx.cfg.script_name);
 245                 html("?url=");
 246                 html_url_arg(ctx.repo->url);
 247                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 248                         html("/");
 249                 if (page) {
 250                         html_url_arg(page);
 251                         html("/");
 252                         if (path)
 253                                 html_url_arg(path);
 254                 }
 255                 delim = "&amp;";
 256         }
 257         if (head && ctx.repo->defbranch && strcmp(head, ctx.repo->defbranch)) {
 258                 html(delim);
 259                 html("h=");
 260                 html_url_arg(head);
 261                 delim = "&amp;";
 262         }
 263         return fmt("%s", delim);
 264 }
 265
 266 static void reporevlink(const char *page, const char *name, const char *title,
 267                         const char *class, const char *head, const char *rev,
 268                         const char *path)
 269 {
 270         char *delim;
 271
 272         delim = repolink(title, class, page, head, path);
 273         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 274                 html(delim);
 275                 html("id=");
 276                 html_url_arg(rev);
 277         }
 278         html("'>");
 279         html_txt(name);
 280         html("</a>");
 281 }
 282
 283 void cgit_summary_link(const char *name, const char *title, const char *class,
 284                        const char *head)
 285 {
 286         reporevlink(NULL, name, title, class, head, NULL, NULL);
 287 }
 288
 289 void cgit_tag_link(const char *name, const char *title, const char *class,
 290                    const char *tag)
 291 {
 292         reporevlink("tag", name, title, class, tag, NULL, NULL);
 293 }
 294
 295 void cgit_tree_link(const char *name, const char *title, const char *class,
 296                     const char *head, const char *rev, const char *path)
 297 {
 298         reporevlink("tree", name, title, class, head, rev, path);
 299 }
 300
 301 void cgit_plain_link(const char *name, const char *title, const char *class,
 302                      const char *head, const char *rev, const char *path)
 303 {
 304         reporevlink("plain", name, title, class, head, rev, path);
 305 }
 306
 307 void cgit_log_link(const char *name, const char *title, const char *class,
 308                    const char *head, const char *rev, const char *path,
 309                    int ofs, const char *grep, const char *pattern, int showmsg,
 310                    int follow)
 311 {
 312         char *delim;
 313
 314         delim = repolink(title, class, "log", head, path);
 315         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 316                 html(delim);
 317                 html("id=");
 318                 html_url_arg(rev);
 319                 delim = "&amp;";
 320         }
 321         if (grep && pattern) {
 322                 html(delim);
 323                 html("qt=");
 324                 html_url_arg(grep);
 325                 delim = "&amp;";
 326                 html(delim);
 327                 html("q=");
 328                 html_url_arg(pattern);
 329         }
 330         if (ofs > 0) {
 331                 html(delim);
 332                 html("ofs=");
 333                 htmlf("%d", ofs);
 334                 delim = "&amp;";
 335         }
 336         if (showmsg) {
 337                 html(delim);
 338                 html("showmsg=1");
 339                 delim = "&amp;";
 340         }
 341         if (follow) {
 342                 html(delim);
 343                 html("follow=1");
 344         }
 345         html("'>");
 346         html_txt(name);
 347         html("</a>");
 348 }
 349
 350 void cgit_commit_link(const char *name, const char *title, const char *class,
 351                       const char *head, const char *rev, const char *path)
 352 {
 353         char *delim;
 354
 355         delim = repolink(title, class, "commit", head, path);
 356         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 357                 html(delim);
 358                 html("id=");
 359                 html_url_arg(rev);
 360                 delim = "&amp;";
 361         }
 362         if (ctx.qry.difftype) {
 363                 html(delim);
 364                 htmlf("dt=%d", ctx.qry.difftype);
 365                 delim = "&amp;";
 366         }
 367         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 368                 html(delim);
 369                 html("context=");
 370                 htmlf("%d", ctx.qry.context);
 371                 delim = "&amp;";
 372         }
 373         if (ctx.qry.ignorews) {
 374                 html(delim);
 375                 html("ignorews=1");
 376                 delim = "&amp;";
 377         }
 378         if (ctx.qry.follow) {
 379                 html(delim);
 380                 html("follow=1");
 381         }
 382         html("'>");
 383         if (name[0] != '\0') {
 384                 if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 385                         html_ntxt(name, ctx.cfg.max_msg_len - 3);
 386                         html("...");
 387                 } else
 388                         html_txt(name);
 389         } else
 390                 html_txt("(no commit message)");
 391         html("</a>");
 392 }
 393
 394 void cgit_refs_link(const char *name, const char *title, const char *class,
 395                     const char *head, const char *rev, const char *path)
 396 {
 397         reporevlink("refs", name, title, class, head, rev, path);
 398 }
 399
 400 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 401                         const char *head, const char *rev,
 402                         const char *archivename)
 403 {
 404         reporevlink("snapshot", name, title, class, head, rev, archivename);
 405 }
 406
 407 void cgit_diff_link(const char *name, const char *title, const char *class,
 408                     const char *head, const char *new_rev, const char *old_rev,
 409                     const char *path)
 410 {
 411         char *delim;
 412
 413         delim = repolink(title, class, "diff", head, path);
 414         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 415                 html(delim);
 416                 html("id=");
 417                 html_url_arg(new_rev);
 418                 delim = "&amp;";
 419         }
 420         if (old_rev) {
 421                 html(delim);
 422                 html("id2=");
 423                 html_url_arg(old_rev);
 424                 delim = "&amp;";
 425         }
 426         if (ctx.qry.difftype) {
 427                 html(delim);
 428                 htmlf("dt=%d", ctx.qry.difftype);
 429                 delim = "&amp;";
 430         }
 431         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 432                 html(delim);
 433                 html("context=");
 434                 htmlf("%d", ctx.qry.context);
 435                 delim = "&amp;";
 436         }
 437         if (ctx.qry.ignorews) {
 438                 html(delim);
 439                 html("ignorews=1");
 440                 delim = "&amp;";
 441         }
 442         if (ctx.qry.follow) {
 443                 html(delim);
 444                 html("follow=1");
 445         }
 446         html("'>");
 447         html_txt(name);
 448         html("</a>");
 449 }
 450
 451 void cgit_patch_link(const char *name, const char *title, const char *class,
 452                      const char *head, const char *rev, const char *path)
 453 {
 454         reporevlink("patch", name, title, class, head, rev, path);
 455 }
 456
 457 void cgit_stats_link(const char *name, const char *title, const char *class,
 458                      const char *head, const char *path)
 459 {
 460         reporevlink("stats", name, title, class, head, NULL, path);
 461 }
 462
 463 static void cgit_self_link(char *name, const char *title, const char *class)
 464 {
 465         if (!strcmp(ctx.qry.page, "repolist"))
 466                 cgit_index_link(name, title, class, ctx.qry.search, ctx.qry.sort,
 467                                 ctx.qry.ofs, 1);
 468         else if (!strcmp(ctx.qry.page, "summary"))
 469                 cgit_summary_link(name, title, class, ctx.qry.head);
 470         else if (!strcmp(ctx.qry.page, "tag"))
 471                 cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
 472                                ctx.qry.sha1 : ctx.qry.head);
 473         else if (!strcmp(ctx.qry.page, "tree"))
 474                 cgit_tree_link(name, title, class, ctx.qry.head,
 475                                ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 476                                ctx.qry.path);
 477         else if (!strcmp(ctx.qry.page, "plain"))
 478                 cgit_plain_link(name, title, class, ctx.qry.head,
 479                                 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 480                                 ctx.qry.path);
 481         else if (!strcmp(ctx.qry.page, "log"))
 482                 cgit_log_link(name, title, class, ctx.qry.head,
 483                               ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 484                               ctx.qry.path, ctx.qry.ofs,
 485                               ctx.qry.grep, ctx.qry.search,
 486                               ctx.qry.showmsg, ctx.qry.follow);
 487         else if (!strcmp(ctx.qry.page, "commit"))
 488                 cgit_commit_link(name, title, class, ctx.qry.head,
 489                                  ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 490                                  ctx.qry.path);
 491         else if (!strcmp(ctx.qry.page, "patch"))
 492                 cgit_patch_link(name, title, class, ctx.qry.head,
 493                                 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 494                                 ctx.qry.path);
 495         else if (!strcmp(ctx.qry.page, "refs"))
 496                 cgit_refs_link(name, title, class, ctx.qry.head,
 497                                ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 498                                ctx.qry.path);
 499         else if (!strcmp(ctx.qry.page, "snapshot"))
 500                 cgit_snapshot_link(name, title, class, ctx.qry.head,
 501                                    ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
 502                                    ctx.qry.path);
 503         else if (!strcmp(ctx.qry.page, "diff"))
 504                 cgit_diff_link(name, title, class, ctx.qry.head,
 505                                ctx.qry.sha1, ctx.qry.sha2,
 506                                ctx.qry.path);
 507         else if (!strcmp(ctx.qry.page, "stats"))
 508                 cgit_stats_link(name, title, class, ctx.qry.head,
 509                                 ctx.qry.path);
 510         else {
 511                 /* Don't known how to make link for this page */
 512                 repolink(title, class, ctx.qry.page, ctx.qry.head, ctx.qry.path);
 513                 html("><!-- cgit_self_link() doesn't know how to make link for page '");
 514                 html_txt(ctx.qry.page);
 515                 html("' -->");
 516                 html_txt(name);
 517                 html("</a>");
 518         }
 519 }
 520
 521 void cgit_object_link(struct object *obj)
 522 {
 523         char *page, *shortrev, *fullrev, *name;
 524
 525         fullrev = oid_to_hex(&obj->oid);
 526         shortrev = xstrdup(fullrev);
 527         shortrev[10] = '\0';
 528         if (obj->type == OBJ_COMMIT) {
 529                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 530                                  ctx.qry.head, fullrev, NULL);
 531                 return;
 532         } else if (obj->type == OBJ_TREE)
 533                 page = "tree";
 534         else if (obj->type == OBJ_TAG)
 535                 page = "tag";
 536         else
 537                 page = "blob";
 538         name = fmt("%s %s...", typename(obj->type), shortrev);
 539         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 540 }
 541
 542 static struct string_list_item *lookup_path(struct string_list *list,
 543                                             const char *path)
 544 {
 545         struct string_list_item *item;
 546
 547         while (path && path[0]) {
 548                 if ((item = string_list_lookup(list, path)))
 549                         return item;
 550                 if (!(path = strchr(path, '/')))
 551                         break;
 552                 path++;
 553         }
 554         return NULL;
 555 }
 556
 557 void cgit_submodule_link(const char *class, char *path, const char *rev)
 558 {
 559         struct string_list *list;
 560         struct string_list_item *item;
 561         char tail, *dir;
 562         size_t len;
 563
 564         len = 0;
 565         tail = 0;
 566         list = &ctx.repo->submodules;
 567         item = lookup_path(list, path);
 568         if (!item) {
 569                 len = strlen(path);
 570                 tail = path[len - 1];
 571                 if (tail == '/') {
 572                         path[len - 1] = 0;
 573                         item = lookup_path(list, path);
 574                 }
 575         }
 576         if (item || ctx.repo->module_link) {
 577                 html("<a ");
 578                 if (class)
 579                         htmlf("class='%s' ", class);
 580                 html("href='");
 581                 if (item) {
 582                         html_attrf(item->util, rev);
 583                 } else {
 584                         dir = strrchr(path, '/');
 585                         if (dir)
 586                                 dir++;
 587                         else
 588                                 dir = path;
 589                         html_attrf(ctx.repo->module_link, dir, rev);
 590                 }
 591                 html("'>");
 592                 html_txt(path);
 593                 html("</a>");
 594         } else {
 595                 html("<span");
 596                 if (class)
 597                         htmlf(" class='%s'", class);
 598                 html(">");
 599                 html_txt(path);
 600                 html("</span>");
 601         }
 602         html_txtf(" @ %.7s", rev);
 603         if (item && tail)
 604                 path[len - 1] = tail;
 605 }
 606
 607 const struct date_mode *cgit_date_mode(enum date_mode_type type)
 608 {
 609         static struct date_mode mode;
 610         mode.type = type;
 611         mode.local = ctx.cfg.local_time;
 612         return &mode;
 613 }
 614
 615 static void print_rel_date(time_t t, int tz, double value,
 616         const char *class, const char *suffix)
 617 {
 618         htmlf("<span class='%s' title='", class);
 619         html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 620         htmlf("'>%.0f %s</span>", value, suffix);
 621 }
 622
 623 void cgit_print_age(time_t t, int tz, time_t max_relative)
 624 {
 625         time_t now, secs;
 626
 627         if (!t)
 628                 return;
 629         time(&now);
 630         secs = now - t;
 631         if (secs < 0)
 632                 secs = 0;
 633
 634         if (secs > max_relative && max_relative >= 0) {
 635                 html("<span title='");
 636                 html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 637                 html("'>");
 638                 html_txt(show_date(t, tz, cgit_date_mode(DATE_SHORT)));
 639                 html("</span>");
 640                 return;
 641         }
 642
 643         if (secs < TM_HOUR * 2) {
 644                 print_rel_date(t, tz, secs * 1.0 / TM_MIN, "age-mins", "min.");
 645                 return;
 646         }
 647         if (secs < TM_DAY * 2) {
 648                 print_rel_date(t, tz, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 649                 return;
 650         }
 651         if (secs < TM_WEEK * 2) {
 652                 print_rel_date(t, tz, secs * 1.0 / TM_DAY, "age-days", "days");
 653                 return;
 654         }
 655         if (secs < TM_MONTH * 2) {
 656                 print_rel_date(t, tz, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 657                 return;
 658         }
 659         if (secs < TM_YEAR * 2) {
 660                 print_rel_date(t, tz, secs * 1.0 / TM_MONTH, "age-months", "months");
 661                 return;
 662         }
 663         print_rel_date(t, tz, secs * 1.0 / TM_YEAR, "age-years", "years");
 664 }
 665
 666 void cgit_print_http_headers(void)
 667 {
 668         if (ctx.env.no_http && !strcmp(ctx.env.no_http, "1"))
 669                 return;
 670
 671         if (ctx.page.status)
 672                 htmlf("Status: %d %s\n", ctx.page.status, ctx.page.statusmsg);
 673         if (ctx.page.mimetype && ctx.page.charset)
 674                 htmlf("Content-Type: %s; charset=%s\n", ctx.page.mimetype,
 675                       ctx.page.charset);
 676         else if (ctx.page.mimetype)
 677                 htmlf("Content-Type: %s\n", ctx.page.mimetype);
 678         if (ctx.page.size)
 679                 htmlf("Content-Length: %zd\n", ctx.page.size);
 680         if (ctx.page.filename) {
 681                 html("Content-Disposition: inline; filename=\"");
 682                 html_header_arg_in_quotes(ctx.page.filename);
 683                 html("\"\n");
 684         }
 685         if (!ctx.env.authenticated)
 686                 html("Cache-Control: no-cache, no-store\n");
 687         htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
 688         htmlf("Expires: %s\n", http_date(ctx.page.expires));
 689         if (ctx.page.etag)
 690                 htmlf("ETag: \"%s\"\n", ctx.page.etag);
 691         html("\n");
 692         if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
 693                 exit(0);
 694 }
 695
 696 void cgit_redirect(const char *url, bool permanent)
 697 {
 698         htmlf("Status: %d %s\n", permanent ? 301 : 302, permanent ? "Moved" : "Found");
 699         html("Location: ");
 700         html_url_path(url);
 701         html("\n\n");
 702 }
 703
 704 static void print_rel_vcs_link(const char *url)
 705 {
 706         html("<link rel='vcs-git' href='");
 707         html_attr(url);
 708         html("' title='");
 709         html_attr(ctx.repo->name);
 710         html(" Git repository'/>\n");
 711 }
 712
 713 void cgit_print_docstart(void)
 714 {
 715         char *host = cgit_hosturl();
 716
 717         if (ctx.cfg.embedded) {
 718                 if (ctx.cfg.header)
 719                         html_include(ctx.cfg.header);
 720                 return;
 721         }
 722
 723         html(cgit_doctype);
 724         html("<html lang='en'>\n");
 725         html("<head>\n");
 726         html("<title>");
 727         html_txt(ctx.page.title);
 728         html("</title>\n");
 729         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 730         if (ctx.cfg.robots && *ctx.cfg.robots)
 731                 htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
 732         html("<link rel='stylesheet' type='text/css' href='");
 733         html_attr(ctx.cfg.css);
 734         html("'/>\n");
 735         if (ctx.cfg.favicon) {
 736                 html("<link rel='shortcut icon' href='");
 737                 html_attr(ctx.cfg.favicon);
 738                 html("'/>\n");
 739         }
 740         if (host && ctx.repo && ctx.qry.head) {
 741                 char *fileurl;
 742                 struct strbuf sb = STRBUF_INIT;
 743                 strbuf_addf(&sb, "h=%s", ctx.qry.head);
 744
 745                 html("<link rel='alternate' title='Atom feed' href='");
 746                 html(cgit_httpscheme());
 747                 html_attr(host);
 748                 fileurl = cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
 749                                        sb.buf);
 750                 html_attr(fileurl);
 751                 html("' type='application/atom+xml'/>\n");
 752                 strbuf_release(&sb);
 753                 free(fileurl);
 754         }
 755         if (ctx.repo)
 756                 cgit_add_clone_urls(print_rel_vcs_link);
 757         if (ctx.cfg.head_include)
 758                 html_include(ctx.cfg.head_include);
 759         html("</head>\n");
 760         html("<body>\n");
 761         if (ctx.cfg.header)
 762                 html_include(ctx.cfg.header);
 763         free(host);
 764 }
 765
 766 void cgit_print_docend(void)
 767 {
 768         html("</div> <!-- class=content -->\n");
 769         if (ctx.cfg.embedded) {
 770                 html("</div> <!-- id=cgit -->\n");
 771                 if (ctx.cfg.footer)
 772                         html_include(ctx.cfg.footer);
 773                 return;
 774         }
 775         if (ctx.cfg.footer)
 776                 html_include(ctx.cfg.footer);
 777         else {
 778                 htmlf("<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 779                         cgit_version);
 780                 html_txt(show_date(time(NULL), 0, cgit_date_mode(DATE_ISO8601)));
 781                 html("</div>\n");
 782         }
 783         html("</div> <!-- id=cgit -->\n");
 784         html("</body>\n</html>\n");
 785 }
 786
 787 void cgit_print_error_page(int code, const char *msg, const char *fmt, ...)
 788 {
 789         va_list ap;
 790         ctx.page.expires = ctx.cfg.cache_dynamic_ttl;
 791         ctx.page.status = code;
 792         ctx.page.statusmsg = msg;
 793         cgit_print_layout_start();
 794         va_start(ap, fmt);
 795         cgit_vprint_error(fmt, ap);
 796         va_end(ap);
 797         cgit_print_layout_end();
 798 }
 799
 800 void cgit_print_layout_start(void)
 801 {
 802         cgit_print_http_headers();
 803         cgit_print_docstart();
 804         cgit_print_pageheader();
 805 }
 806
 807 void cgit_print_layout_end(void)
 808 {
 809         cgit_print_docend();
 810 }
 811
 812 static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 813 {
 814         struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
 815         int i;
 816
 817         for (i = 0; url_list[i]; i++) {
 818                 strbuf_rtrim(url_list[i]);
 819                 if (url_list[i]->len == 0)
 820                         continue;
 821                 if (suffix && *suffix)
 822                         strbuf_addf(url_list[i], "/%s", suffix);
 823                 fn(url_list[i]->buf);
 824         }
 825
 826         strbuf_list_free(url_list);
 827 }
 828
 829 void cgit_add_clone_urls(void (*fn)(const char *))
 830 {
 831         if (ctx.repo->clone_url)
 832                 add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
 833         else if (ctx.cfg.clone_prefix)
 834                 add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 835 }
 836
 837 static int print_branch_option(const char *refname, const struct object_id *oid,
 838                                int flags, void *cb_data)
 839 {
 840         char *name = (char *)refname;
 841         html_option(name, name, ctx.qry.head);
 842         return 0;
 843 }
 844
 845 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 846                                 const char *page)
 847 {
 848         if (!ctx.cfg.virtual_root) {
 849                 struct strbuf url = STRBUF_INIT;
 850
 851                 strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 852                 if (ctx.qry.vpath)
 853                         strbuf_addf(&url, "/%s", ctx.qry.vpath);
 854                 html_hidden("url", url.buf);
 855                 strbuf_release(&url);
 856         }
 857
 858         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 859             strcmp(ctx.qry.head, ctx.repo->defbranch))
 860                 html_hidden("h", ctx.qry.head);
 861
 862         if (ctx.qry.sha1)
 863                 html_hidden("id", ctx.qry.sha1);
 864         if (ctx.qry.sha2)
 865                 html_hidden("id2", ctx.qry.sha2);
 866         if (ctx.qry.showmsg)
 867                 html_hidden("showmsg", "1");
 868
 869         if (incl_search) {
 870                 if (ctx.qry.grep)
 871                         html_hidden("qt", ctx.qry.grep);
 872                 if (ctx.qry.search)
 873                         html_hidden("q", ctx.qry.search);
 874         }
 875 }
 876
 877 static const char *hc(const char *page)
 878 {
 879         if (!ctx.qry.page)
 880                 return NULL;
 881
 882         return strcmp(ctx.qry.page, page) ? NULL : "active";
 883 }
 884
 885 static void cgit_print_path_crumbs(char *path)
 886 {
 887         char *old_path = ctx.qry.path;
 888         char *p = path, *q, *end = path + strlen(path);
 889
 890         ctx.qry.path = NULL;
 891         cgit_self_link("root", NULL, NULL);
 892         ctx.qry.path = p = path;
 893         while (p < end) {
 894                 if (!(q = strchr(p, '/')))
 895                         q = end;
 896                 *q = '\0';
 897                 html_txt("/");
 898                 cgit_self_link(p, NULL, NULL);
 899                 if (q < end)
 900                         *q = '/';
 901                 p = q + 1;
 902         }
 903         ctx.qry.path = old_path;
 904 }
 905
 906 static void print_header(void)
 907 {
 908         char *logo = NULL, *logo_link = NULL;
 909
 910         html("<table id='header'>\n");
 911         html("<tr>\n");
 912
 913         if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
 914                 logo = ctx.repo->logo;
 915         else
 916                 logo = ctx.cfg.logo;
 917         if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
 918                 logo_link = ctx.repo->logo_link;
 919         else
 920                 logo_link = ctx.cfg.logo_link;
 921         if (logo && *logo) {
 922                 html("<td class='logo' rowspan='2'><a href='");
 923                 if (logo_link && *logo_link)
 924                         html_attr(logo_link);
 925                 else
 926                         html_attr(cgit_rooturl());
 927                 html("'><img src='");
 928                 html_attr(logo);
 929                 html("' alt='cgit logo'/></a></td>\n");
 930         }
 931
 932         html("<td class='main'>");
 933         if (ctx.repo) {
 934                 cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 935                 html(" : ");
 936                 cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
 937                 if (ctx.env.authenticated) {
 938                         html("</td><td class='form'>");
 939                         html("<form method='get'>\n");
 940                         cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 941                         html("<select name='h' onchange='this.form.submit();'>\n");
 942                         for_each_branch_ref(print_branch_option, ctx.qry.head);
 943                         if (ctx.repo->enable_remote_branches)
 944                                 for_each_remote_ref(print_branch_option, ctx.qry.head);
 945                         html("</select> ");
 946                         html("<input type='submit' value='switch'/>");
 947                         html("</form>");
 948                 }
 949         } else
 950                 html_txt(ctx.cfg.root_title);
 951         html("</td></tr>\n");
 952
 953         html("<tr><td class='sub'>");
 954         if (ctx.repo) {
 955                 html_txt(ctx.repo->desc);
 956                 html("</td><td class='sub right'>");
 957                 html_txt(ctx.repo->owner);
 958         } else {
 959                 if (ctx.cfg.root_desc)
 960                         html_txt(ctx.cfg.root_desc);
 961                 else if (ctx.cfg.index_info)
 962                         html_include(ctx.cfg.index_info);
 963         }
 964         html("</td></tr></table>\n");
 965 }
 966
 967 void cgit_print_pageheader(void)
 968 {
 969         html("<div id='cgit'>");
 970         if (!ctx.env.authenticated || !ctx.cfg.noheader)
 971                 print_header();
 972
 973         html("<table class='tabs'><tr><td>\n");
 974         if (ctx.env.authenticated && ctx.repo) {
 975                 if (ctx.repo->readme.nr)
 976                         reporevlink("about", "about", NULL,
 977                                     hc("about"), ctx.qry.head, NULL,
 978                                     NULL);
 979                 cgit_summary_link("summary", NULL, hc("summary"),
 980                                   ctx.qry.head);
 981                 cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
 982                                ctx.qry.sha1, NULL);
 983                 cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 984                               NULL, ctx.qry.vpath, 0, NULL, NULL,
 985                               ctx.qry.showmsg, ctx.qry.follow);
 986                 cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
 987                                ctx.qry.sha1, ctx.qry.vpath);
 988                 cgit_commit_link("commit", NULL, hc("commit"),
 989                                  ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
 990                 cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
 991                                ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
 992                 if (ctx.repo->max_stats)
 993                         cgit_stats_link("stats", NULL, hc("stats"),
 994                                         ctx.qry.head, ctx.qry.vpath);
 995                 if (ctx.repo->homepage) {
 996                         html("<a href='");
 997                         html_attr(ctx.repo->homepage);
 998                         html("'>homepage</a>");
 999                 }
1000                 html("</td><td class='form'>");
1001                 html("<form class='right' method='get' action='");
1002                 if (ctx.cfg.virtual_root) {
1003                         char *fileurl = cgit_fileurl(ctx.qry.repo, "log",
1004                                                    ctx.qry.vpath, NULL);
1005                         html_url_path(fileurl);
1006                         free(fileurl);
1007                 }
1008                 html("'>\n");
1009                 cgit_add_hidden_formfields(1, 0, "log");
1010                 html("<select name='qt'>\n");
1011                 html_option("grep", "log msg", ctx.qry.grep);
1012                 html_option("author", "author", ctx.qry.grep);
1013                 html_option("committer", "committer", ctx.qry.grep);
1014                 html_option("range", "range", ctx.qry.grep);
1015                 html("</select>\n");
1016                 html("<input class='txt' type='text' size='10' name='q' value='");
1017                 html_attr(ctx.qry.search);
1018                 html("'/>\n");
1019                 html("<input type='submit' value='search'/>\n");
1020                 html("</form>\n");
1021         } else if (ctx.env.authenticated) {
1022                 char *currenturl = cgit_currenturl();
1023                 site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
1024                 if (ctx.cfg.root_readme)
1025                         site_link("about", "about", NULL, hc("about"),
1026                                   NULL, NULL, 0, 1);
1027                 html("</td><td class='form'>");
1028                 html("<form method='get' action='");
1029                 html_attr(currenturl);
1030                 html("'>\n");
1031                 html("<input type='text' name='q' size='10' value='");
1032                 html_attr(ctx.qry.search);
1033                 html("'/>\n");
1034                 html("<input type='submit' value='search'/>\n");
1035                 html("</form>");
1036                 free(currenturl);
1037         }
1038         html("</td></tr></table>\n");
1039         if (ctx.env.authenticated && ctx.repo && ctx.qry.vpath) {
1040                 html("<div class='path'>");
1041                 html("path: ");
1042                 cgit_print_path_crumbs(ctx.qry.vpath);
1043                 if (ctx.cfg.enable_follow_links && !strcmp(ctx.qry.page, "log")) {
1044                         html(" (");
1045                         ctx.qry.follow = !ctx.qry.follow;
1046                         cgit_self_link(ctx.qry.follow ? "follow" : "unfollow",
1047                                         NULL, NULL);
1048                         ctx.qry.follow = !ctx.qry.follow;
1049                         html(")");
1050                 }
1051                 html("</div>");
1052         }
1053         html("<div class='content'>");
1054 }
1055
1056 void cgit_print_filemode(unsigned short mode)
1057 {
1058         if (S_ISDIR(mode))
1059                 html("d");
1060         else if (S_ISLNK(mode))
1061                 html("l");
1062         else if (S_ISGITLINK(mode))
1063                 html("m");
1064         else
1065                 html("-");
1066         html_fileperm(mode >> 6);
1067         html_fileperm(mode >> 3);
1068         html_fileperm(mode);
1069 }
1070
1071 void cgit_compose_snapshot_prefix(struct strbuf *filename, const char *base,
1072                                   const char *ref)
1073 {
1074         struct object_id oid;
1075
1076         /*
1077          * Prettify snapshot names by stripping leading "v" or "V" if the tag
1078          * name starts with {v,V}[0-9] and the prettify mapping is injective,
1079          * i.e. each stripped tag can be inverted without ambiguities.
1080          */
1081         if (get_oid(fmt("refs/tags/%s", ref), &oid) == 0 &&
1082             (ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]) &&
1083             ((get_oid(fmt("refs/tags/%s", ref + 1), &oid) == 0) +
1084              (get_oid(fmt("refs/tags/v%s", ref + 1), &oid) == 0) +
1085              (get_oid(fmt("refs/tags/V%s", ref + 1), &oid) == 0) == 1))
1086                 ref++;
1087
1088         strbuf_addf(filename, "%s-%s", base, ref);
1089 }
1090
1091 void cgit_print_snapshot_links(const char *repo, const char *head,
1092                                const char *hex, int snapshots)
1093 {
1094         const struct cgit_snapshot_format* f;
1095         struct strbuf filename = STRBUF_INIT;
1096         size_t prefixlen;
1097
1098         cgit_compose_snapshot_prefix(&filename, cgit_repobasename(repo), hex);
1099         prefixlen = filename.len;
1100         for (f = cgit_snapshot_formats; f->suffix; f++) {
1101                 if (!(snapshots & f->bit))
1102                         continue;
1103                 strbuf_setlen(&filename, prefixlen);
1104                 strbuf_addstr(&filename, f->suffix);
1105                 cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
1106                                    filename.buf);
1107                 html("<br/>");
1108         }
1109         strbuf_release(&filename);
1110 }
1111
1112 void cgit_set_title_from_path(const char *path)
1113 {
1114         size_t path_len, path_index, path_last_end;
1115         char *new_title;
1116
1117         if (!path)
1118                 return;
1119
1120         path_len = strlen(path);
1121         new_title = xmalloc(path_len + 3 + strlen(ctx.page.title) + 1);
1122         new_title[0] = '\0';
1123
1124         for (path_index = path_len, path_last_end = path_len; path_index-- > 0;) {
1125                 if (path[path_index] == '/') {
1126                         if (path_index == path_len - 1) {
1127                                 path_last_end = path_index - 1;
1128                                 continue;
1129                         }
1130                         strncat(new_title, &path[path_index + 1], path_last_end - path_index - 1);
1131                         strcat(new_title, "\\");
1132                         path_last_end = path_index;
1133                 }
1134         }
1135         if (path_last_end)
1136                 strncat(new_title, path, path_last_end);
1137
1138         strcat(new_title, " - ");
1139         strcat(new_title, ctx.page.title);
1140         ctx.page.title = new_title;
1141 }