ui-shared.c

   1 /* ui-shared.c: common web output functions
   2  *
   3  * Copyright (C) 2006 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "cmd.h"
  11 #include "html.h"
  12
  13 const char cgit_doctype[] =
  14 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  15 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\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 *msg)
  31 {
  32         html("<div class='error'>");
  33         html_txt(msg);
  34         html("</div>\n");
  35 }
  36
  37 char *cgit_httpscheme()
  38 {
  39         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  40                 return "https://";
  41         else
  42                 return "http://";
  43 }
  44
  45 char *cgit_hosturl()
  46 {
  47         if (ctx.env.http_host)
  48                 return ctx.env.http_host;
  49         if (!ctx.env.server_name)
  50                 return NULL;
  51         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  52                 return ctx.env.server_name;
  53         return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
  54 }
  55
  56 char *cgit_rooturl()
  57 {
  58         if (ctx.cfg.virtual_root)
  59                 return fmt("%s/", ctx.cfg.virtual_root);
  60         else
  61                 return ctx.cfg.script_name;
  62 }
  63
  64 char *cgit_repourl(const char *reponame)
  65 {
  66         if (ctx.cfg.virtual_root) {
  67                 return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
  68         } else {
  69                 return fmt("?r=%s", reponame);
  70         }
  71 }
  72
  73 char *cgit_fileurl(const char *reponame, const char *pagename,
  74                    const char *filename, const char *query)
  75 {
  76         char *tmp;
  77         char *delim;
  78
  79         if (ctx.cfg.virtual_root) {
  80                 tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
  81                           pagename, (filename ? filename:""));
  82                 delim = "?";
  83         } else {
  84                 tmp = fmt("?url=%s/%s/%s", reponame, pagename,
  85                           (filename ? filename : ""));
  86                 delim = "&";
  87         }
  88         if (query)
  89                 tmp = fmt("%s%s%s", tmp, delim, query);
  90         return tmp;
  91 }
  92
  93 char *cgit_pageurl(const char *reponame, const char *pagename,
  94                    const char *query)
  95 {
  96         return cgit_fileurl(reponame,pagename,0,query);
  97 }
  98
  99 const char *cgit_repobasename(const char *reponame)
 100 {
 101         /* I assume we don't need to store more than one repo basename */
 102         static char rvbuf[1024];
 103         int p;
 104         const char *rv;
 105         strncpy(rvbuf,reponame,sizeof(rvbuf));
 106         if(rvbuf[sizeof(rvbuf)-1])
 107                 die("cgit_repobasename: truncated repository name '%s'", reponame);
 108         p = strlen(rvbuf)-1;
 109         /* strip trailing slashes */
 110         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
 111         /* strip trailing .git */
 112         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
 113                 p -= 3; rvbuf[p--] = 0;
 114         }
 115         /* strip more trailing slashes if any */
 116         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
 117         /* find last slash in the remaining string */
 118         rv = strrchr(rvbuf,'/');
 119         if(rv)
 120                 return ++rv;
 121         return rvbuf;
 122 }
 123
 124 char *cgit_currurl()
 125 {
 126         if (!ctx.cfg.virtual_root)
 127                 return ctx.cfg.script_name;
 128         else if (ctx.qry.page)
 129                 return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
 130         else if (ctx.qry.repo)
 131                 return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
 132         else
 133                 return fmt("%s/", ctx.cfg.virtual_root);
 134 }
 135
 136 static void site_url(const char *page, const char *search, int ofs)
 137 {
 138         char *delim = "?";
 139
 140         if (ctx.cfg.virtual_root) {
 141                 html_attr(ctx.cfg.virtual_root);
 142                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 143                         html("/");
 144         } else
 145                 html(ctx.cfg.script_name);
 146
 147         if (page) {
 148                 htmlf("?p=%s", page);
 149                 delim = "&";
 150         }
 151         if (search) {
 152                 html(delim);
 153                 html("q=");
 154                 html_attr(search);
 155                 delim = "&";
 156         }
 157         if (ofs) {
 158                 html(delim);
 159                 htmlf("ofs=%d", ofs);
 160         }
 161 }
 162
 163 static void site_link(const char *page, const char *name, const char *title,
 164                       const char *class, const char *search, int ofs)
 165 {
 166         html("<a");
 167         if (title) {
 168                 html(" title='");
 169                 html_attr(title);
 170                 html("'");
 171         }
 172         if (class) {
 173                 html(" class='");
 174                 html_attr(class);
 175                 html("'");
 176         }
 177         html(" href='");
 178         site_url(page, search, ofs);
 179         html("'>");
 180         html_txt(name);
 181         html("</a>");
 182 }
 183
 184 void cgit_index_link(const char *name, const char *title, const char *class,
 185                      const char *pattern, int ofs)
 186 {
 187         site_link(NULL, name, title, class, pattern, ofs);
 188 }
 189
 190 static char *repolink(const char *title, const char *class, const char *page,
 191                       const char *head, const char *path)
 192 {
 193         char *delim = "?";
 194
 195         html("<a");
 196         if (title) {
 197                 html(" title='");
 198                 html_attr(title);
 199                 html("'");
 200         }
 201         if (class) {
 202                 html(" class='");
 203                 html_attr(class);
 204                 html("'");
 205         }
 206         html(" href='");
 207         if (ctx.cfg.virtual_root) {
 208                 html_url_path(ctx.cfg.virtual_root);
 209                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 210                         html("/");
 211                 html_url_path(ctx.repo->url);
 212                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 213                         html("/");
 214                 if (page) {
 215                         html_url_path(page);
 216                         html("/");
 217                         if (path)
 218                                 html_url_path(path);
 219                 }
 220         } else {
 221                 html(ctx.cfg.script_name);
 222                 html("?url=");
 223                 html_url_arg(ctx.repo->url);
 224                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 225                         html("/");
 226                 if (page) {
 227                         html_url_arg(page);
 228                         html("/");
 229                         if (path)
 230                                 html_url_arg(path);
 231                 }
 232                 delim = "&amp;";
 233         }
 234         if (head && strcmp(head, ctx.repo->defbranch)) {
 235                 html(delim);
 236                 html("h=");
 237                 html_url_arg(head);
 238                 delim = "&amp;";
 239         }
 240         return fmt("%s", delim);
 241 }
 242
 243 static void reporevlink(const char *page, const char *name, const char *title,
 244                         const char *class, const char *head, const char *rev,
 245                         const char *path)
 246 {
 247         char *delim;
 248
 249         delim = repolink(title, class, page, head, path);
 250         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 251                 html(delim);
 252                 html("id=");
 253                 html_url_arg(rev);
 254         }
 255         html("'>");
 256         html_txt(name);
 257         html("</a>");
 258 }
 259
 260 void cgit_summary_link(const char *name, const char *title, const char *class,
 261                        const char *head)
 262 {
 263         reporevlink(NULL, name, title, class, head, NULL, NULL);
 264 }
 265
 266 void cgit_tag_link(const char *name, const char *title, const char *class,
 267                    const char *head, const char *rev)
 268 {
 269         reporevlink("tag", name, title, class, head, rev, NULL);
 270 }
 271
 272 void cgit_tree_link(const char *name, const char *title, const char *class,
 273                     const char *head, const char *rev, const char *path)
 274 {
 275         reporevlink("tree", name, title, class, head, rev, path);
 276 }
 277
 278 void cgit_plain_link(const char *name, const char *title, const char *class,
 279                      const char *head, const char *rev, const char *path)
 280 {
 281         reporevlink("plain", name, title, class, head, rev, path);
 282 }
 283
 284 void cgit_log_link(const char *name, const char *title, const char *class,
 285                    const char *head, const char *rev, const char *path,
 286                    int ofs, const char *grep, const char *pattern, int showmsg)
 287 {
 288         char *delim;
 289
 290         delim = repolink(title, class, "log", head, path);
 291         if (rev && strcmp(rev, ctx.qry.head)) {
 292                 html(delim);
 293                 html("id=");
 294                 html_url_arg(rev);
 295                 delim = "&";
 296         }
 297         if (grep && pattern) {
 298                 html(delim);
 299                 html("qt=");
 300                 html_url_arg(grep);
 301                 delim = "&";
 302                 html(delim);
 303                 html("q=");
 304                 html_url_arg(pattern);
 305         }
 306         if (ofs > 0) {
 307                 html(delim);
 308                 html("ofs=");
 309                 htmlf("%d", ofs);
 310                 delim = "&";
 311         }
 312         if (showmsg) {
 313                 html(delim);
 314                 html("showmsg=1");
 315         }
 316         html("'>");
 317         html_txt(name);
 318         html("</a>");
 319 }
 320
 321 void cgit_commit_link(char *name, const char *title, const char *class,
 322                       const char *head, const char *rev, const char *path,
 323                       int toggle_ssdiff)
 324 {
 325         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 326                 name[ctx.cfg.max_msg_len] = '\0';
 327                 name[ctx.cfg.max_msg_len - 1] = '.';
 328                 name[ctx.cfg.max_msg_len - 2] = '.';
 329                 name[ctx.cfg.max_msg_len - 3] = '.';
 330         }
 331
 332         char *delim;
 333
 334         delim = repolink(title, class, "commit", head, path);
 335         if (rev && strcmp(rev, ctx.qry.head)) {
 336                 html(delim);
 337                 html("id=");
 338                 html_url_arg(rev);
 339                 delim = "&amp;";
 340         }
 341         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 342                 html(delim);
 343                 html("ss=1");
 344                 delim = "&amp;";
 345         }
 346         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 347                 html(delim);
 348                 html("context=");
 349                 htmlf("%d", ctx.qry.context);
 350                 delim = "&amp;";
 351         }
 352         if (ctx.qry.ignorews) {
 353                 html(delim);
 354                 html("ignorews=1");
 355                 delim = "&amp;";
 356         }
 357         html("'>");
 358         html_txt(name);
 359         html("</a>");
 360 }
 361
 362 void cgit_refs_link(const char *name, const char *title, const char *class,
 363                     const char *head, const char *rev, const char *path)
 364 {
 365         reporevlink("refs", name, title, class, head, rev, path);
 366 }
 367
 368 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 369                         const char *head, const char *rev,
 370                         const char *archivename)
 371 {
 372         reporevlink("snapshot", name, title, class, head, rev, archivename);
 373 }
 374
 375 void cgit_diff_link(const char *name, const char *title, const char *class,
 376                     const char *head, const char *new_rev, const char *old_rev,
 377                     const char *path, int toggle_ssdiff)
 378 {
 379         char *delim;
 380
 381         delim = repolink(title, class, "diff", head, path);
 382         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 383                 html(delim);
 384                 html("id=");
 385                 html_url_arg(new_rev);
 386                 delim = "&amp;";
 387         }
 388         if (old_rev) {
 389                 html(delim);
 390                 html("id2=");
 391                 html_url_arg(old_rev);
 392                 delim = "&amp;";
 393         }
 394         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 395                 html(delim);
 396                 html("ss=1");
 397                 delim = "&amp;";
 398         }
 399         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 400                 html(delim);
 401                 html("context=");
 402                 htmlf("%d", ctx.qry.context);
 403                 delim = "&amp;";
 404         }
 405         if (ctx.qry.ignorews) {
 406                 html(delim);
 407                 html("ignorews=1");
 408                 delim = "&amp;";
 409         }
 410         html("'>");
 411         html_txt(name);
 412         html("</a>");
 413 }
 414
 415 void cgit_patch_link(const char *name, const char *title, const char *class,
 416                      const char *head, const char *rev, const char *path)
 417 {
 418         reporevlink("patch", name, title, class, head, rev, path);
 419 }
 420
 421 void cgit_stats_link(const char *name, const char *title, const char *class,
 422                      const char *head, const char *path)
 423 {
 424         reporevlink("stats", name, title, class, head, NULL, path);
 425 }
 426
 427 void cgit_self_link(char *name, const char *title, const char *class,
 428                     struct cgit_context *ctx)
 429 {
 430         if (!strcmp(ctx->qry.page, "repolist"))
 431                 return cgit_index_link(name, title, class, ctx->qry.search,
 432                                        ctx->qry.ofs);
 433         else if (!strcmp(ctx->qry.page, "summary"))
 434                 return cgit_summary_link(name, title, class, ctx->qry.head);
 435         else if (!strcmp(ctx->qry.page, "tag"))
 436                 return cgit_tag_link(name, title, class, ctx->qry.head,
 437                                      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 438         else if (!strcmp(ctx->qry.page, "tree"))
 439                 return cgit_tree_link(name, title, class, ctx->qry.head,
 440                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 441                                       ctx->qry.path);
 442         else if (!strcmp(ctx->qry.page, "plain"))
 443                 return cgit_plain_link(name, title, class, ctx->qry.head,
 444                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 445                                       ctx->qry.path);
 446         else if (!strcmp(ctx->qry.page, "log"))
 447                 return cgit_log_link(name, title, class, ctx->qry.head,
 448                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 449                                       ctx->qry.path, ctx->qry.ofs,
 450                                       ctx->qry.grep, ctx->qry.search,
 451                                       ctx->qry.showmsg);
 452         else if (!strcmp(ctx->qry.page, "commit"))
 453                 return cgit_commit_link(name, title, class, ctx->qry.head,
 454                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 455                                       ctx->qry.path, 0);
 456         else if (!strcmp(ctx->qry.page, "patch"))
 457                 return cgit_patch_link(name, title, class, ctx->qry.head,
 458                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 459                                       ctx->qry.path);
 460         else if (!strcmp(ctx->qry.page, "refs"))
 461                 return cgit_refs_link(name, title, class, ctx->qry.head,
 462                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 463                                       ctx->qry.path);
 464         else if (!strcmp(ctx->qry.page, "snapshot"))
 465                 return cgit_snapshot_link(name, title, class, ctx->qry.head,
 466                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 467                                       ctx->qry.path);
 468         else if (!strcmp(ctx->qry.page, "diff"))
 469                 return cgit_diff_link(name, title, class, ctx->qry.head,
 470                                       ctx->qry.sha1, ctx->qry.sha2,
 471                                       ctx->qry.path, 0);
 472         else if (!strcmp(ctx->qry.page, "stats"))
 473                 return cgit_stats_link(name, title, class, ctx->qry.head,
 474                                       ctx->qry.path);
 475
 476         /* Don't known how to make link for this page */
 477         repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 478         html("><!-- cgit_self_link() doesn't know how to make link for page '");
 479         html_txt(ctx->qry.page);
 480         html("' -->");
 481         html_txt(name);
 482         html("</a>");
 483 }
 484
 485 void cgit_object_link(struct object *obj)
 486 {
 487         char *page, *shortrev, *fullrev, *name;
 488
 489         fullrev = sha1_to_hex(obj->sha1);
 490         shortrev = xstrdup(fullrev);
 491         shortrev[10] = '\0';
 492         if (obj->type == OBJ_COMMIT) {
 493                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 494                                  ctx.qry.head, fullrev, NULL, 0);
 495                 return;
 496         } else if (obj->type == OBJ_TREE)
 497                 page = "tree";
 498         else if (obj->type == OBJ_TAG)
 499                 page = "tag";
 500         else
 501                 page = "blob";
 502         name = fmt("%s %s...", typename(obj->type), shortrev);
 503         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 504 }
 505
 506 struct string_list_item *lookup_path(struct string_list *list,
 507                                      const char *path)
 508 {
 509         struct string_list_item *item;
 510
 511         while (path && path[0]) {
 512                 if ((item = string_list_lookup(list, path)))
 513                         return item;
 514                 if (!(path = strchr(path, '/')))
 515                         break;
 516                 path++;
 517         }
 518         return NULL;
 519 }
 520
 521 void cgit_submodule_link(const char *class, char *path, const char *rev)
 522 {
 523         struct string_list *list;
 524         struct string_list_item *item;
 525         char tail, *dir;
 526         size_t len;
 527
 528         tail = 0;
 529         list = &ctx.repo->submodules;
 530         item = lookup_path(list, path);
 531         if (!item) {
 532                 len = strlen(path);
 533                 tail = path[len - 1];
 534                 if (tail == '/') {
 535                         path[len - 1] = 0;
 536                         item = lookup_path(list, path);
 537                 }
 538         }
 539         html("<a ");
 540         if (class)
 541                 htmlf("class='%s' ", class);
 542         html("href='");
 543         if (item) {
 544                 html_attr(fmt(item->util, rev));
 545         } else if (ctx.repo->module_link) {
 546                 dir = strrchr(path, '/');
 547                 if (dir)
 548                         dir++;
 549                 else
 550                         dir = path;
 551                 html_attr(fmt(ctx.repo->module_link, dir, rev));
 552         } else {
 553                 html("#");
 554         }
 555         html("'>");
 556         html_txt(path);
 557         html("</a>");
 558         if (item && tail)
 559                 path[len - 1] = tail;
 560 }
 561
 562 void cgit_print_date(time_t secs, const char *format, int local_time)
 563 {
 564         char buf[64];
 565         struct tm *time;
 566
 567         if (!secs)
 568                 return;
 569         if(local_time)
 570                 time = localtime(&secs);
 571         else
 572                 time = gmtime(&secs);
 573         strftime(buf, sizeof(buf)-1, format, time);
 574         html_txt(buf);
 575 }
 576
 577 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 578 {
 579         time_t now, secs;
 580
 581         if (!t)
 582                 return;
 583         time(&now);
 584         secs = now - t;
 585
 586         if (secs > max_relative && max_relative >= 0) {
 587                 cgit_print_date(t, format, ctx.cfg.local_time);
 588                 return;
 589         }
 590
 591         if (secs < TM_HOUR * 2) {
 592                 htmlf("<span class='age-mins'>%.0f min.</span>",
 593                       secs * 1.0 / TM_MIN);
 594                 return;
 595         }
 596         if (secs < TM_DAY * 2) {
 597                 htmlf("<span class='age-hours'>%.0f hours</span>",
 598                       secs * 1.0 / TM_HOUR);
 599                 return;
 600         }
 601         if (secs < TM_WEEK * 2) {
 602                 htmlf("<span class='age-days'>%.0f days</span>",
 603                       secs * 1.0 / TM_DAY);
 604                 return;
 605         }
 606         if (secs < TM_MONTH * 2) {
 607                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 608                       secs * 1.0 / TM_WEEK);
 609                 return;
 610         }
 611         if (secs < TM_YEAR * 2) {
 612                 htmlf("<span class='age-months'>%.0f months</span>",
 613                       secs * 1.0 / TM_MONTH);
 614                 return;
 615         }
 616         htmlf("<span class='age-years'>%.0f years</span>",
 617               secs * 1.0 / TM_YEAR);
 618 }
 619
 620 void cgit_print_http_headers(struct cgit_context *ctx)
 621 {
 622         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 623                 return;
 624
 625         if (ctx->page.status)
 626                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 627         if (ctx->page.mimetype && ctx->page.charset)
 628                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 629                       ctx->page.charset);
 630         else if (ctx->page.mimetype)
 631                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 632         if (ctx->page.size)
 633                 htmlf("Content-Length: %zd\n", ctx->page.size);
 634         if (ctx->page.filename)
 635                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 636                       ctx->page.filename);
 637         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 638         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 639         if (ctx->page.etag)
 640                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 641         html("\n");
 642         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 643                 exit(0);
 644 }
 645
 646 void cgit_print_docstart(struct cgit_context *ctx)
 647 {
 648         if (ctx->cfg.embedded) {
 649                 if (ctx->cfg.header)
 650                         html_include(ctx->cfg.header);
 651                 return;
 652         }
 653
 654         char *host = cgit_hosturl();
 655         html(cgit_doctype);
 656         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 657         html("<head>\n");
 658         html("<title>");
 659         html_txt(ctx->page.title);
 660         html("</title>\n");
 661         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 662         if (ctx->cfg.robots && *ctx->cfg.robots)
 663                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 664         html("<link rel='stylesheet' type='text/css' href='");
 665         html_attr(ctx->cfg.css);
 666         html("'/>\n");
 667         if (ctx->cfg.favicon) {
 668                 html("<link rel='shortcut icon' href='");
 669                 html_attr(ctx->cfg.favicon);
 670                 html("'/>\n");
 671         }
 672         if (host && ctx->repo) {
 673                 html("<link rel='alternate' title='Atom feed' href='");
 674                 html(cgit_httpscheme());
 675                 html_attr(cgit_hosturl());
 676                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 677                                        fmt("h=%s", ctx->qry.head)));
 678                 html("' type='application/atom+xml'/>\n");
 679         }
 680         if (ctx->cfg.head_include)
 681                 html_include(ctx->cfg.head_include);
 682         html("</head>\n");
 683         html("<body>\n");
 684         if (ctx->cfg.header)
 685                 html_include(ctx->cfg.header);
 686 }
 687
 688 void cgit_print_docend()
 689 {
 690         html("</div> <!-- class=content -->\n");
 691         if (ctx.cfg.embedded) {
 692                 html("</div> <!-- id=cgit -->\n");
 693                 if (ctx.cfg.footer)
 694                         html_include(ctx.cfg.footer);
 695                 return;
 696         }
 697         if (ctx.cfg.footer)
 698                 html_include(ctx.cfg.footer);
 699         else {
 700                 htmlf("<div class='footer'>generated  by cgit %s at ",
 701                         cgit_version);
 702                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 703                 html("</div>\n");
 704         }
 705         html("</div> <!-- id=cgit -->\n");
 706         html("</body>\n</html>\n");
 707 }
 708
 709 int print_branch_option(const char *refname, const unsigned char *sha1,
 710                         int flags, void *cb_data)
 711 {
 712         char *name = (char *)refname;
 713         html_option(name, name, ctx.qry.head);
 714         return 0;
 715 }
 716
 717 int print_archive_ref(const char *refname, const unsigned char *sha1,
 718                        int flags, void *cb_data)
 719 {
 720         struct tag *tag;
 721         struct taginfo *info;
 722         struct object *obj;
 723         char buf[256], *url;
 724         unsigned char fileid[20];
 725         int *header = (int *)cb_data;
 726
 727         if (prefixcmp(refname, "refs/archives"))
 728                 return 0;
 729         strncpy(buf, refname+14, sizeof(buf));
 730         obj = parse_object(sha1);
 731         if (!obj)
 732                 return 1;
 733         if (obj->type == OBJ_TAG) {
 734                 tag = lookup_tag(sha1);
 735                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 736                         return 0;
 737                 hashcpy(fileid, tag->tagged->sha1);
 738         } else if (obj->type != OBJ_BLOB) {
 739                 return 0;
 740         } else {
 741                 hashcpy(fileid, sha1);
 742         }
 743         if (!*header) {
 744                 html("<h1>download</h1>\n");
 745                 *header = 1;
 746         }
 747         url = cgit_pageurl(ctx.qry.repo, "blob",
 748                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 749                                buf));
 750         html_link_open(url, NULL, "menu");
 751         html_txt(strlpart(buf, 20));
 752         html_link_close();
 753         return 0;
 754 }
 755
 756 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 757                                 const char *page)
 758 {
 759         char *url;
 760
 761         if (!ctx.cfg.virtual_root) {
 762                 url = fmt("%s/%s", ctx.qry.repo, page);
 763                 if (ctx.qry.vpath)
 764                         url = fmt("%s/%s", url, ctx.qry.vpath);
 765                 html_hidden("url", url);
 766         }
 767
 768         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 769             strcmp(ctx.qry.head, ctx.repo->defbranch))
 770                 html_hidden("h", ctx.qry.head);
 771
 772         if (ctx.qry.sha1)
 773                 html_hidden("id", ctx.qry.sha1);
 774         if (ctx.qry.sha2)
 775                 html_hidden("id2", ctx.qry.sha2);
 776         if (ctx.qry.showmsg)
 777                 html_hidden("showmsg", "1");
 778
 779         if (incl_search) {
 780                 if (ctx.qry.grep)
 781                         html_hidden("qt", ctx.qry.grep);
 782                 if (ctx.qry.search)
 783                         html_hidden("q", ctx.qry.search);
 784         }
 785 }
 786
 787 static const char *hc(struct cgit_context *ctx, const char *page)
 788 {
 789         return strcmp(ctx->qry.page, page) ? NULL : "active";
 790 }
 791
 792 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 793 {
 794         char *old_path = ctx->qry.path;
 795         char *p = path, *q, *end = path + strlen(path);
 796
 797         ctx->qry.path = NULL;
 798         cgit_self_link("root", NULL, NULL, ctx);
 799         ctx->qry.path = p = path;
 800         while (p < end) {
 801                 if (!(q = strchr(p, '/')))
 802                         q = end;
 803                 *q = '\0';
 804                 html_txt("/");
 805                 cgit_self_link(p, NULL, NULL, ctx);
 806                 if (q < end)
 807                         *q = '/';
 808                 p = q + 1;
 809         }
 810         ctx->qry.path = old_path;
 811 }
 812
 813 static void print_header(struct cgit_context *ctx)
 814 {
 815         char *logo = NULL, *logo_link = NULL;
 816
 817         html("<table id='header'>\n");
 818         html("<tr>\n");
 819
 820         if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
 821                 logo = ctx->repo->logo;
 822         else
 823                 logo = ctx->cfg.logo;
 824         if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
 825                 logo_link = ctx->repo->logo_link;
 826         else
 827                 logo_link = ctx->cfg.logo_link;
 828         if (logo && *logo) {
 829                 html("<td class='logo' rowspan='2'><a href='");
 830                 if (logo_link && *logo_link)
 831                         html_attr(logo_link);
 832                 else
 833                         html_attr(cgit_rooturl());
 834                 html("'><img src='");
 835                 html_attr(logo);
 836                 html("' alt='cgit logo'/></a></td>\n");
 837         }
 838
 839         html("<td class='main'>");
 840         if (ctx->repo) {
 841                 cgit_index_link("index", NULL, NULL, NULL, 0);
 842                 html(" : ");
 843                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 844                 html("</td><td class='form'>");
 845                 html("<form method='get' action=''>\n");
 846                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 847                 html("<select name='h' onchange='this.form.submit();'>\n");
 848                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 849                 html("</select> ");
 850                 html("<input type='submit' name='' value='switch'/>");
 851                 html("</form>");
 852         } else
 853                 html_txt(ctx->cfg.root_title);
 854         html("</td></tr>\n");
 855
 856         html("<tr><td class='sub'>");
 857         if (ctx->repo) {
 858                 html_txt(ctx->repo->desc);
 859                 html("</td><td class='sub right'>");
 860                 html_txt(ctx->repo->owner);
 861         } else {
 862                 if (ctx->cfg.root_desc)
 863                         html_txt(ctx->cfg.root_desc);
 864                 else if (ctx->cfg.index_info)
 865                         html_include(ctx->cfg.index_info);
 866         }
 867         html("</td></tr></table>\n");
 868 }
 869
 870 void cgit_print_pageheader(struct cgit_context *ctx)
 871 {
 872         html("<div id='cgit'>");
 873         if (!ctx->cfg.noheader)
 874                 print_header(ctx);
 875
 876         html("<table class='tabs'><tr><td>\n");
 877         if (ctx->repo) {
 878                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 879                                   ctx->qry.head);
 880                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 881                                ctx->qry.sha1, NULL);
 882                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 883                               NULL, ctx->qry.vpath, 0, NULL, NULL,
 884                               ctx->qry.showmsg);
 885                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 886                                ctx->qry.sha1, ctx->qry.vpath);
 887                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 888                                  ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 889                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 890                                ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 891                 if (ctx->repo->max_stats)
 892                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 893                                         ctx->qry.head, ctx->qry.vpath);
 894                 if (ctx->repo->readme)
 895                         reporevlink("about", "about", NULL,
 896                                     hc(ctx, "about"), ctx->qry.head, NULL,
 897                                     NULL);
 898                 html("</td><td class='form'>");
 899                 html("<form class='right' method='get' action='");
 900                 if (ctx->cfg.virtual_root)
 901                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 902                                                    ctx->qry.vpath, NULL));
 903                 html("'>\n");
 904                 cgit_add_hidden_formfields(1, 0, "log");
 905                 html("<select name='qt'>\n");
 906                 html_option("grep", "log msg", ctx->qry.grep);
 907                 html_option("author", "author", ctx->qry.grep);
 908                 html_option("committer", "committer", ctx->qry.grep);
 909                 html_option("range", "range", ctx->qry.grep);
 910                 html("</select>\n");
 911                 html("<input class='txt' type='text' size='10' name='q' value='");
 912                 html_attr(ctx->qry.search);
 913                 html("'/>\n");
 914                 html("<input type='submit' value='search'/>\n");
 915                 html("</form>\n");
 916         } else {
 917                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, 0);
 918                 if (ctx->cfg.root_readme)
 919                         site_link("about", "about", NULL, hc(ctx, "about"),
 920                                   NULL, 0);
 921                 html("</td><td class='form'>");
 922                 html("<form method='get' action='");
 923                 html_attr(cgit_rooturl());
 924                 html("'>\n");
 925                 html("<input type='text' name='q' size='10' value='");
 926                 html_attr(ctx->qry.search);
 927                 html("'/>\n");
 928                 html("<input type='submit' value='search'/>\n");
 929                 html("</form>");
 930         }
 931         html("</td></tr></table>\n");
 932         if (ctx->qry.vpath) {
 933                 html("<div class='path'>");
 934                 html("path: ");
 935                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 936                 html("</div>");
 937         }
 938         html("<div class='content'>");
 939 }
 940
 941 void cgit_print_filemode(unsigned short mode)
 942 {
 943         if (S_ISDIR(mode))
 944                 html("d");
 945         else if (S_ISLNK(mode))
 946                 html("l");
 947         else if (S_ISGITLINK(mode))
 948                 html("m");
 949         else
 950                 html("-");
 951         html_fileperm(mode >> 6);
 952         html_fileperm(mode >> 3);
 953         html_fileperm(mode);
 954 }
 955
 956 void cgit_print_snapshot_links(const char *repo, const char *head,
 957                                const char *hex, int snapshots)
 958 {
 959         const struct cgit_snapshot_format* f;
 960         char *prefix;
 961         char *filename;
 962         unsigned char sha1[20];
 963
 964         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 965             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 966                 hex++;
 967         prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
 968         for (f = cgit_snapshot_formats; f->suffix; f++) {
 969                 if (!(snapshots & f->bit))
 970                         continue;
 971                 filename = fmt("%s%s", prefix, f->suffix);
 972                 cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
 973                 html("<br/>");
 974         }
 975 }