gitweb.ps.run Git - ps-cgit/blob - shared.c

   1 /* shared.c: global vars + some callback 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
  11 struct repolist cgit_repolist;
  12 struct repoinfo *cgit_repo;
  13 int cgit_cmd;
  14
  15 const char *cgit_version = CGIT_VERSION;
  16
  17 char *cgit_root_title   = "Git repository browser";
  18 char *cgit_css          = "/cgit.css";
  19 char *cgit_logo         = "/git-logo.png";
  20 char *cgit_index_header = NULL;
  21 char *cgit_index_info   = NULL;
  22 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
  23 char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
  24 char *cgit_agefile      = "info/web/last-modified";
  25 char *cgit_virtual_root = NULL;
  26 char *cgit_script_name  = CGIT_SCRIPT_NAME;
  27 char *cgit_cache_root   = CGIT_CACHE_ROOT;
  28 char *cgit_repo_group   = NULL;
  29 char *cgit_robots       = "index, nofollow";
  30
  31 int cgit_nocache               =  0;
  32 int cgit_snapshots             =  0;
  33 int cgit_enable_index_links    =  0;
  34 int cgit_enable_log_filecount  =  0;
  35 int cgit_enable_log_linecount  =  0;
  36 int cgit_max_lock_attempts     =  5;
  37 int cgit_cache_root_ttl        =  5;
  38 int cgit_cache_repo_ttl        =  5;
  39 int cgit_cache_dynamic_ttl     =  5;
  40 int cgit_cache_static_ttl      = -1;
  41 int cgit_cache_max_create_time =  5;
  42 int cgit_summary_log           =  0;
  43 int cgit_summary_tags          =  0;
  44 int cgit_summary_branches      =  0;
  45 int cgit_renamelimit           = -1;
  46
  47 int cgit_max_msg_len = 60;
  48 int cgit_max_repodesc_len = 60;
  49 int cgit_max_commit_count = 50;
  50
  51 int cgit_query_has_symref = 0;
  52 int cgit_query_has_sha1   = 0;
  53
  54 char *cgit_querystring  = NULL;
  55 char *cgit_query_repo   = NULL;
  56 char *cgit_query_page   = NULL;
  57 char *cgit_query_head   = NULL;
  58 char *cgit_query_search = NULL;
  59 char *cgit_query_grep   = NULL;
  60 char *cgit_query_sha1   = NULL;
  61 char *cgit_query_sha2   = NULL;
  62 char *cgit_query_path   = NULL;
  63 char *cgit_query_name   = NULL;
  64 int   cgit_query_ofs    = 0;
  65
  66 int htmlfd = 0;
  67
  68
  69 int cgit_get_cmd_index(const char *cmd)
  70 {
  71         static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
  72                                "snapshot", "tag", "refs", NULL};
  73         int i;
  74
  75         for(i = 0; cmds[i]; i++)
  76                 if (!strcmp(cmd, cmds[i]))
  77                         return i + 1;
  78         return 0;
  79 }
  80
  81 int chk_zero(int result, char *msg)
  82 {
  83         if (result != 0)
  84                 die("%s: %s", msg, strerror(errno));
  85         return result;
  86 }
  87
  88 int chk_positive(int result, char *msg)
  89 {
  90         if (result <= 0)
  91                 die("%s: %s", msg, strerror(errno));
  92         return result;
  93 }
  94
  95 int chk_non_negative(int result, char *msg)
  96 {
  97         if (result < 0)
  98                 die("%s: %s",msg, strerror(errno));
  99         return result;
 100 }
 101
 102 struct repoinfo *add_repo(const char *url)
 103 {
 104         struct repoinfo *ret;
 105
 106         if (++cgit_repolist.count > cgit_repolist.length) {
 107                 if (cgit_repolist.length == 0)
 108                         cgit_repolist.length = 8;
 109                 else
 110                         cgit_repolist.length *= 2;
 111                 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
 112                                                cgit_repolist.length *
 113                                                sizeof(struct repoinfo));
 114         }
 115
 116         ret = &cgit_repolist.repos[cgit_repolist.count-1];
 117         ret->url = trim_end(url, '/');
 118         ret->name = ret->url;
 119         ret->path = NULL;
 120         ret->desc = NULL;
 121         ret->owner = NULL;
 122         ret->group = cgit_repo_group;
 123         ret->defbranch = "master";
 124         ret->snapshots = cgit_snapshots;
 125         ret->enable_log_filecount = cgit_enable_log_filecount;
 126         ret->enable_log_linecount = cgit_enable_log_linecount;
 127         ret->module_link = cgit_module_link;
 128         ret->readme = NULL;
 129         return ret;
 130 }
 131
 132 struct repoinfo *cgit_get_repoinfo(const char *url)
 133 {
 134         int i;
 135         struct repoinfo *repo;
 136
 137         for (i=0; i<cgit_repolist.count; i++) {
 138                 repo = &cgit_repolist.repos[i];
 139                 if (!strcmp(repo->url, url))
 140                         return repo;
 141         }
 142         return NULL;
 143 }
 144
 145 void cgit_global_config_cb(const char *name, const char *value)
 146 {
 147         if (!strcmp(name, "root-title"))
 148                 cgit_root_title = xstrdup(value);
 149         else if (!strcmp(name, "css"))
 150                 cgit_css = xstrdup(value);
 151         else if (!strcmp(name, "logo"))
 152                 cgit_logo = xstrdup(value);
 153         else if (!strcmp(name, "index-header"))
 154                 cgit_index_header = xstrdup(value);
 155         else if (!strcmp(name, "index-info"))
 156                 cgit_index_info = xstrdup(value);
 157         else if (!strcmp(name, "logo-link"))
 158                 cgit_logo_link = xstrdup(value);
 159         else if (!strcmp(name, "module-link"))
 160                 cgit_module_link = xstrdup(value);
 161         else if (!strcmp(name, "virtual-root")) {
 162                 cgit_virtual_root = trim_end(value, '/');
 163                 if (!cgit_virtual_root && (!strcmp(value, "/")))
 164                         cgit_virtual_root = "";
 165         } else if (!strcmp(name, "nocache"))
 166                 cgit_nocache = atoi(value);
 167         else if (!strcmp(name, "snapshots"))
 168                 cgit_snapshots = cgit_parse_snapshots_mask(value);
 169         else if (!strcmp(name, "enable-index-links"))
 170                 cgit_enable_index_links = atoi(value);
 171         else if (!strcmp(name, "enable-log-filecount"))
 172                 cgit_enable_log_filecount = atoi(value);
 173         else if (!strcmp(name, "enable-log-linecount"))
 174                 cgit_enable_log_linecount = atoi(value);
 175         else if (!strcmp(name, "cache-root"))
 176                 cgit_cache_root = xstrdup(value);
 177         else if (!strcmp(name, "cache-root-ttl"))
 178                 cgit_cache_root_ttl = atoi(value);
 179         else if (!strcmp(name, "cache-repo-ttl"))
 180                 cgit_cache_repo_ttl = atoi(value);
 181         else if (!strcmp(name, "cache-static-ttl"))
 182                 cgit_cache_static_ttl = atoi(value);
 183         else if (!strcmp(name, "cache-dynamic-ttl"))
 184                 cgit_cache_dynamic_ttl = atoi(value);
 185         else if (!strcmp(name, "max-message-length"))
 186                 cgit_max_msg_len = atoi(value);
 187         else if (!strcmp(name, "max-repodesc-length"))
 188                 cgit_max_repodesc_len = atoi(value);
 189         else if (!strcmp(name, "max-commit-count"))
 190                 cgit_max_commit_count = atoi(value);
 191         else if (!strcmp(name, "summary-log"))
 192                 cgit_summary_log = atoi(value);
 193         else if (!strcmp(name, "summary-branches"))
 194                 cgit_summary_branches = atoi(value);
 195         else if (!strcmp(name, "summary-tags"))
 196                 cgit_summary_tags = atoi(value);
 197         else if (!strcmp(name, "agefile"))
 198                 cgit_agefile = xstrdup(value);
 199         else if (!strcmp(name, "renamelimit"))
 200                 cgit_renamelimit = atoi(value);
 201         else if (!strcmp(name, "robots"))
 202                 cgit_robots = xstrdup(value);
 203         else if (!strcmp(name, "repo.group"))
 204                 cgit_repo_group = xstrdup(value);
 205         else if (!strcmp(name, "repo.url"))
 206                 cgit_repo = add_repo(value);
 207         else if (!strcmp(name, "repo.name"))
 208                 cgit_repo->name = xstrdup(value);
 209         else if (cgit_repo && !strcmp(name, "repo.path"))
 210                 cgit_repo->path = trim_end(value, '/');
 211         else if (cgit_repo && !strcmp(name, "repo.desc"))
 212                 cgit_repo->desc = xstrdup(value);
 213         else if (cgit_repo && !strcmp(name, "repo.owner"))
 214                 cgit_repo->owner = xstrdup(value);
 215         else if (cgit_repo && !strcmp(name, "repo.defbranch"))
 216                 cgit_repo->defbranch = xstrdup(value);
 217         else if (cgit_repo && !strcmp(name, "repo.snapshots"))
 218                 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
 219         else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
 220                 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
 221         else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
 222                 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
 223         else if (cgit_repo && !strcmp(name, "repo.module-link"))
 224                 cgit_repo->module_link= xstrdup(value);
 225         else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
 226                 if (*value == '/')
 227                         cgit_repo->readme = xstrdup(value);
 228                 else
 229                         cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
 230         } else if (!strcmp(name, "include"))
 231                 cgit_read_config(value, cgit_global_config_cb);
 232 }
 233
 234 void cgit_querystring_cb(const char *name, const char *value)
 235 {
 236         if (!strcmp(name,"r")) {
 237                 cgit_query_repo = xstrdup(value);
 238                 cgit_repo = cgit_get_repoinfo(value);
 239         } else if (!strcmp(name, "p")) {
 240                 cgit_query_page = xstrdup(value);
 241                 cgit_cmd = cgit_get_cmd_index(value);
 242         } else if (!strcmp(name, "url")) {
 243                 cgit_parse_url(value);
 244         } else if (!strcmp(name, "qt")) {
 245                 cgit_query_grep = xstrdup(value);
 246         } else if (!strcmp(name, "q")) {
 247                 cgit_query_search = xstrdup(value);
 248         } else if (!strcmp(name, "h")) {
 249                 cgit_query_head = xstrdup(value);
 250                 cgit_query_has_symref = 1;
 251         } else if (!strcmp(name, "id")) {
 252                 cgit_query_sha1 = xstrdup(value);
 253                 cgit_query_has_sha1 = 1;
 254         } else if (!strcmp(name, "id2")) {
 255                 cgit_query_sha2 = xstrdup(value);
 256                 cgit_query_has_sha1 = 1;
 257         } else if (!strcmp(name, "ofs")) {
 258                 cgit_query_ofs = atoi(value);
 259         } else if (!strcmp(name, "path")) {
 260                 cgit_query_path = trim_end(value, '/');
 261         } else if (!strcmp(name, "name")) {
 262                 cgit_query_name = xstrdup(value);
 263         }
 264 }
 265
 266 void *cgit_free_commitinfo(struct commitinfo *info)
 267 {
 268         free(info->author);
 269         free(info->author_email);
 270         free(info->committer);
 271         free(info->committer_email);
 272         free(info->subject);
 273         free(info->msg);
 274         free(info->msg_encoding);
 275         free(info);
 276         return NULL;
 277 }
 278
 279 int hextoint(char c)
 280 {
 281         if (c >= 'a' && c <= 'f')
 282                 return 10 + c - 'a';
 283         else if (c >= 'A' && c <= 'F')
 284                 return 10 + c - 'A';
 285         else if (c >= '0' && c <= '9')
 286                 return c - '0';
 287         else
 288                 return -1;
 289 }
 290
 291 char *trim_end(const char *str, char c)
 292 {
 293         int len;
 294         char *s, *t;
 295
 296         if (str == NULL)
 297                 return NULL;
 298         t = (char *)str;
 299         len = strlen(t);
 300         while(len > 0 && t[len - 1] == c)
 301                 len--;
 302
 303         if (len == 0)
 304                 return NULL;
 305
 306         c = t[len];
 307         t[len] = '\0';
 308         s = xstrdup(t);
 309         t[len] = c;
 310         return s;
 311 }
 312
 313 char *strlpart(char *txt, int maxlen)
 314 {
 315         char *result;
 316
 317         if (!txt)
 318                 return txt;
 319
 320         if (strlen(txt) <= maxlen)
 321                 return txt;
 322         result = xmalloc(maxlen + 1);
 323         memcpy(result, txt, maxlen - 3);
 324         result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
 325         result[maxlen] = '\0';
 326         return result;
 327 }
 328
 329 char *strrpart(char *txt, int maxlen)
 330 {
 331         char *result;
 332
 333         if (!txt)
 334                 return txt;
 335
 336         if (strlen(txt) <= maxlen)
 337                 return txt;
 338         result = xmalloc(maxlen + 1);
 339         memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
 340         result[0] = result[1] = result[2] = '.';
 341         return result;
 342 }
 343
 344 void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 345 {
 346         size_t size;
 347
 348         if (list->count >= list->alloc) {
 349                 list->alloc += (list->alloc ? list->alloc : 4);
 350                 size = list->alloc * sizeof(struct refinfo *);
 351                 list->refs = xrealloc(list->refs, size);
 352         }
 353         list->refs[list->count++] = ref;
 354 }
 355
 356 struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
 357 {
 358         struct refinfo *ref;
 359
 360         ref = xmalloc(sizeof (struct refinfo));
 361         ref->refname = xstrdup(refname);
 362         ref->object = parse_object(sha1);
 363         switch (ref->object->type) {
 364         case OBJ_TAG:
 365                 ref->tag = cgit_parse_tag((struct tag *)ref->object);
 366                 break;
 367         case OBJ_COMMIT:
 368                 ref->commit = cgit_parse_commit((struct commit *)ref->object);
 369                 break;
 370         }
 371         return ref;
 372 }
 373
 374 int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
 375                   void *cb_data)
 376 {
 377         struct reflist *list = (struct reflist *)cb_data;
 378         struct refinfo *info = cgit_mk_refinfo(refname, sha1);
 379
 380         if (info)
 381                 cgit_add_ref(list, info);
 382         return 0;
 383 }
 384
 385 void cgit_diff_tree_cb(struct diff_queue_struct *q,
 386                        struct diff_options *options, void *data)
 387 {
 388         int i;
 389
 390         for (i = 0; i < q->nr; i++) {
 391                 if (q->queue[i]->status == 'U')
 392                         continue;
 393                 ((filepair_fn)data)(q->queue[i]);
 394         }
 395 }
 396
 397 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 398 {
 399         enum object_type type;
 400
 401         if (is_null_sha1(sha1)) {
 402                 file->ptr = (char *)"";
 403                 file->size = 0;
 404         } else {
 405                 file->ptr = read_sha1_file(sha1, &type,
 406                                            (unsigned long *)&file->size);
 407         }
 408         return 1;
 409 }
 410
 411 /*
 412  * Receive diff-buffers from xdiff and concatenate them as
 413  * needed across multiple callbacks.
 414  *
 415  * This is basically a copy of xdiff-interface.c/xdiff_outf(),
 416  * ripped from git and modified to use globals instead of
 417  * a special callback-struct.
 418  */
 419 char *diffbuf = NULL;
 420 int buflen = 0;
 421
 422 int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 423 {
 424         int i;
 425
 426         for (i = 0; i < nbuf; i++) {
 427                 if (mb[i].ptr[mb[i].size-1] != '\n') {
 428                         /* Incomplete line */
 429                         diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 430                         memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 431                         buflen += mb[i].size;
 432                         continue;
 433                 }
 434
 435                 /* we have a complete line */
 436                 if (!diffbuf) {
 437                         ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
 438                         continue;
 439                 }
 440                 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 441                 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 442                 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
 443                 free(diffbuf);
 444                 diffbuf = NULL;
 445                 buflen = 0;
 446         }
 447         if (diffbuf) {
 448                 ((linediff_fn)priv)(diffbuf, buflen);
 449                 free(diffbuf);
 450                 diffbuf = NULL;
 451                 buflen = 0;
 452         }
 453         return 0;
 454 }
 455
 456 int cgit_diff_files(const unsigned char *old_sha1,
 457                      const unsigned char *new_sha1,
 458                      linediff_fn fn)
 459 {
 460         mmfile_t file1, file2;
 461         xpparam_t diff_params;
 462         xdemitconf_t emit_params;
 463         xdemitcb_t emit_cb;
 464
 465         if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
 466                 return 1;
 467
 468         diff_params.flags = XDF_NEED_MINIMAL;
 469         emit_params.ctxlen = 3;
 470         emit_params.flags = XDL_EMIT_FUNCNAMES;
 471         emit_params.find_func = NULL;
 472         emit_cb.outf = filediff_cb;
 473         emit_cb.priv = fn;
 474         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 475         return 0;
 476 }
 477
 478 void cgit_diff_tree(const unsigned char *old_sha1,
 479                     const unsigned char *new_sha1,
 480                     filepair_fn fn, const char *prefix)
 481 {
 482         struct diff_options opt;
 483         int ret;
 484         int prefixlen;
 485
 486         diff_setup(&opt);
 487         opt.output_format = DIFF_FORMAT_CALLBACK;
 488         opt.detect_rename = 1;
 489         opt.rename_limit = cgit_renamelimit;
 490         opt.recursive = 1;
 491         opt.format_callback = cgit_diff_tree_cb;
 492         opt.format_callback_data = fn;
 493         if (prefix) {
 494                 opt.nr_paths = 1;
 495                 opt.paths = &prefix;
 496                 prefixlen = strlen(prefix);
 497                 opt.pathlens = &prefixlen;
 498         }
 499         diff_setup_done(&opt);
 500
 501         if (old_sha1 && !is_null_sha1(old_sha1))
 502                 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
 503         else
 504                 ret = diff_root_tree_sha1(new_sha1, "", &opt);
 505         diffcore_std(&opt);
 506         diff_flush(&opt);
 507 }
 508
 509 void cgit_diff_commit(struct commit *commit, filepair_fn fn)
 510 {
 511         unsigned char *old_sha1 = NULL;
 512
 513         if (commit->parents)
 514                 old_sha1 = commit->parents->item->object.sha1;
 515         cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
 516 }