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 struct cgit_context ctx;
  14 int cgit_cmd;
  15
  16 const char *cgit_version = CGIT_VERSION;
  17
  18 char *cgit_root_title   = "Git repository browser";
  19 char *cgit_css          = "/cgit.css";
  20 char *cgit_logo         = "/git-logo.png";
  21 char *cgit_index_header = NULL;
  22 char *cgit_index_info   = NULL;
  23 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
  24 char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
  25 char *cgit_agefile      = "info/web/last-modified";
  26 char *cgit_virtual_root = NULL;
  27 char *cgit_script_name  = CGIT_SCRIPT_NAME;
  28 char *cgit_cache_root   = CGIT_CACHE_ROOT;
  29 char *cgit_repo_group   = NULL;
  30 char *cgit_robots       = "index, nofollow";
  31 char *cgit_clone_prefix = NULL;
  32
  33 int cgit_nocache               =  0;
  34 int cgit_snapshots             =  0;
  35 int cgit_enable_index_links    =  0;
  36 int cgit_enable_log_filecount  =  0;
  37 int cgit_enable_log_linecount  =  0;
  38 int cgit_max_lock_attempts     =  5;
  39 int cgit_cache_root_ttl        =  5;
  40 int cgit_cache_repo_ttl        =  5;
  41 int cgit_cache_dynamic_ttl     =  5;
  42 int cgit_cache_static_ttl      = -1;
  43 int cgit_cache_max_create_time =  5;
  44 int cgit_summary_log           =  0;
  45 int cgit_summary_tags          =  0;
  46 int cgit_summary_branches      =  0;
  47 int cgit_renamelimit           = -1;
  48
  49 int cgit_max_msg_len = 60;
  50 int cgit_max_repodesc_len = 60;
  51 int cgit_max_commit_count = 50;
  52
  53 int htmlfd = 0;
  54
  55 int cgit_get_cmd_index(const char *cmd)
  56 {
  57         static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
  58                                "snapshot", "tag", "refs", "patch", NULL};
  59         int i;
  60
  61         for(i = 0; cmds[i]; i++)
  62                 if (!strcmp(cmd, cmds[i]))
  63                         return i + 1;
  64         return 0;
  65 }
  66
  67 int chk_zero(int result, char *msg)
  68 {
  69         if (result != 0)
  70                 die("%s: %s", msg, strerror(errno));
  71         return result;
  72 }
  73
  74 int chk_positive(int result, char *msg)
  75 {
  76         if (result <= 0)
  77                 die("%s: %s", msg, strerror(errno));
  78         return result;
  79 }
  80
  81 int chk_non_negative(int result, char *msg)
  82 {
  83         if (result < 0)
  84                 die("%s: %s",msg, strerror(errno));
  85         return result;
  86 }
  87
  88 struct repoinfo *add_repo(const char *url)
  89 {
  90         struct repoinfo *ret;
  91
  92         if (++cgit_repolist.count > cgit_repolist.length) {
  93                 if (cgit_repolist.length == 0)
  94                         cgit_repolist.length = 8;
  95                 else
  96                         cgit_repolist.length *= 2;
  97                 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
  98                                                cgit_repolist.length *
  99                                                sizeof(struct repoinfo));
 100         }
 101
 102         ret = &cgit_repolist.repos[cgit_repolist.count-1];
 103         ret->url = trim_end(url, '/');
 104         ret->name = ret->url;
 105         ret->path = NULL;
 106         ret->desc = "[no description]";
 107         ret->owner = NULL;
 108         ret->group = cgit_repo_group;
 109         ret->defbranch = "master";
 110         ret->snapshots = cgit_snapshots;
 111         ret->enable_log_filecount = cgit_enable_log_filecount;
 112         ret->enable_log_linecount = cgit_enable_log_linecount;
 113         ret->module_link = cgit_module_link;
 114         ret->readme = NULL;
 115         return ret;
 116 }
 117
 118 struct repoinfo *cgit_get_repoinfo(const char *url)
 119 {
 120         int i;
 121         struct repoinfo *repo;
 122
 123         for (i=0; i<cgit_repolist.count; i++) {
 124                 repo = &cgit_repolist.repos[i];
 125                 if (!strcmp(repo->url, url))
 126                         return repo;
 127         }
 128         return NULL;
 129 }
 130
 131 void cgit_global_config_cb(const char *name, const char *value)
 132 {
 133         if (!strcmp(name, "root-title"))
 134                 cgit_root_title = xstrdup(value);
 135         else if (!strcmp(name, "css"))
 136                 cgit_css = xstrdup(value);
 137         else if (!strcmp(name, "logo"))
 138                 cgit_logo = xstrdup(value);
 139         else if (!strcmp(name, "index-header"))
 140                 cgit_index_header = xstrdup(value);
 141         else if (!strcmp(name, "index-info"))
 142                 cgit_index_info = xstrdup(value);
 143         else if (!strcmp(name, "logo-link"))
 144                 cgit_logo_link = xstrdup(value);
 145         else if (!strcmp(name, "module-link"))
 146                 cgit_module_link = xstrdup(value);
 147         else if (!strcmp(name, "virtual-root")) {
 148                 cgit_virtual_root = trim_end(value, '/');
 149                 if (!cgit_virtual_root && (!strcmp(value, "/")))
 150                         cgit_virtual_root = "";
 151         } else if (!strcmp(name, "nocache"))
 152                 cgit_nocache = atoi(value);
 153         else if (!strcmp(name, "snapshots"))
 154                 cgit_snapshots = cgit_parse_snapshots_mask(value);
 155         else if (!strcmp(name, "enable-index-links"))
 156                 cgit_enable_index_links = atoi(value);
 157         else if (!strcmp(name, "enable-log-filecount"))
 158                 cgit_enable_log_filecount = atoi(value);
 159         else if (!strcmp(name, "enable-log-linecount"))
 160                 cgit_enable_log_linecount = atoi(value);
 161         else if (!strcmp(name, "cache-root"))
 162                 cgit_cache_root = xstrdup(value);
 163         else if (!strcmp(name, "cache-root-ttl"))
 164                 cgit_cache_root_ttl = atoi(value);
 165         else if (!strcmp(name, "cache-repo-ttl"))
 166                 cgit_cache_repo_ttl = atoi(value);
 167         else if (!strcmp(name, "cache-static-ttl"))
 168                 cgit_cache_static_ttl = atoi(value);
 169         else if (!strcmp(name, "cache-dynamic-ttl"))
 170                 cgit_cache_dynamic_ttl = atoi(value);
 171         else if (!strcmp(name, "max-message-length"))
 172                 cgit_max_msg_len = atoi(value);
 173         else if (!strcmp(name, "max-repodesc-length"))
 174                 cgit_max_repodesc_len = atoi(value);
 175         else if (!strcmp(name, "max-commit-count"))
 176                 cgit_max_commit_count = atoi(value);
 177         else if (!strcmp(name, "summary-log"))
 178                 cgit_summary_log = atoi(value);
 179         else if (!strcmp(name, "summary-branches"))
 180                 cgit_summary_branches = atoi(value);
 181         else if (!strcmp(name, "summary-tags"))
 182                 cgit_summary_tags = atoi(value);
 183         else if (!strcmp(name, "agefile"))
 184                 cgit_agefile = xstrdup(value);
 185         else if (!strcmp(name, "renamelimit"))
 186                 cgit_renamelimit = atoi(value);
 187         else if (!strcmp(name, "robots"))
 188                 cgit_robots = xstrdup(value);
 189         else if (!strcmp(name, "clone-prefix"))
 190                 cgit_clone_prefix = xstrdup(value);
 191         else if (!strcmp(name, "repo.group"))
 192                 cgit_repo_group = xstrdup(value);
 193         else if (!strcmp(name, "repo.url"))
 194                 cgit_repo = add_repo(value);
 195         else if (!strcmp(name, "repo.name"))
 196                 cgit_repo->name = xstrdup(value);
 197         else if (cgit_repo && !strcmp(name, "repo.path"))
 198                 cgit_repo->path = trim_end(value, '/');
 199         else if (cgit_repo && !strcmp(name, "repo.clone-url"))
 200                 cgit_repo->clone_url = xstrdup(value);
 201         else if (cgit_repo && !strcmp(name, "repo.desc"))
 202                 cgit_repo->desc = xstrdup(value);
 203         else if (cgit_repo && !strcmp(name, "repo.owner"))
 204                 cgit_repo->owner = xstrdup(value);
 205         else if (cgit_repo && !strcmp(name, "repo.defbranch"))
 206                 cgit_repo->defbranch = xstrdup(value);
 207         else if (cgit_repo && !strcmp(name, "repo.snapshots"))
 208                 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
 209         else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
 210                 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
 211         else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
 212                 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
 213         else if (cgit_repo && !strcmp(name, "repo.module-link"))
 214                 cgit_repo->module_link= xstrdup(value);
 215         else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
 216                 if (*value == '/')
 217                         cgit_repo->readme = xstrdup(value);
 218                 else
 219                         cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
 220         } else if (!strcmp(name, "include"))
 221                 cgit_read_config(value, cgit_global_config_cb);
 222 }
 223
 224 void cgit_querystring_cb(const char *name, const char *value)
 225 {
 226         if (!strcmp(name,"r")) {
 227                 ctx.qry.repo = xstrdup(value);
 228                 cgit_repo = cgit_get_repoinfo(value);
 229         } else if (!strcmp(name, "p")) {
 230                 ctx.qry.page = xstrdup(value);
 231                 cgit_cmd = cgit_get_cmd_index(value);
 232         } else if (!strcmp(name, "url")) {
 233                 cgit_parse_url(value);
 234         } else if (!strcmp(name, "qt")) {
 235                 ctx.qry.grep = xstrdup(value);
 236         } else if (!strcmp(name, "q")) {
 237                 ctx.qry.search = xstrdup(value);
 238         } else if (!strcmp(name, "h")) {
 239                 ctx.qry.head = xstrdup(value);
 240                 ctx.qry.has_symref = 1;
 241         } else if (!strcmp(name, "id")) {
 242                 ctx.qry.sha1 = xstrdup(value);
 243                 ctx.qry.has_sha1 = 1;
 244         } else if (!strcmp(name, "id2")) {
 245                 ctx.qry.sha2 = xstrdup(value);
 246                 ctx.qry.has_sha1 = 1;
 247         } else if (!strcmp(name, "ofs")) {
 248                 ctx.qry.ofs = atoi(value);
 249         } else if (!strcmp(name, "path")) {
 250                 ctx.qry.path = trim_end(value, '/');
 251         } else if (!strcmp(name, "name")) {
 252                 ctx.qry.name = xstrdup(value);
 253         }
 254 }
 255
 256 void *cgit_free_commitinfo(struct commitinfo *info)
 257 {
 258         free(info->author);
 259         free(info->author_email);
 260         free(info->committer);
 261         free(info->committer_email);
 262         free(info->subject);
 263         free(info->msg);
 264         free(info->msg_encoding);
 265         free(info);
 266         return NULL;
 267 }
 268
 269 int hextoint(char c)
 270 {
 271         if (c >= 'a' && c <= 'f')
 272                 return 10 + c - 'a';
 273         else if (c >= 'A' && c <= 'F')
 274                 return 10 + c - 'A';
 275         else if (c >= '0' && c <= '9')
 276                 return c - '0';
 277         else
 278                 return -1;
 279 }
 280
 281 char *trim_end(const char *str, char c)
 282 {
 283         int len;
 284         char *s, *t;
 285
 286         if (str == NULL)
 287                 return NULL;
 288         t = (char *)str;
 289         len = strlen(t);
 290         while(len > 0 && t[len - 1] == c)
 291                 len--;
 292
 293         if (len == 0)
 294                 return NULL;
 295
 296         c = t[len];
 297         t[len] = '\0';
 298         s = xstrdup(t);
 299         t[len] = c;
 300         return s;
 301 }
 302
 303 char *strlpart(char *txt, int maxlen)
 304 {
 305         char *result;
 306
 307         if (!txt)
 308                 return txt;
 309
 310         if (strlen(txt) <= maxlen)
 311                 return txt;
 312         result = xmalloc(maxlen + 1);
 313         memcpy(result, txt, maxlen - 3);
 314         result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
 315         result[maxlen] = '\0';
 316         return result;
 317 }
 318
 319 char *strrpart(char *txt, int maxlen)
 320 {
 321         char *result;
 322
 323         if (!txt)
 324                 return txt;
 325
 326         if (strlen(txt) <= maxlen)
 327                 return txt;
 328         result = xmalloc(maxlen + 1);
 329         memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
 330         result[0] = result[1] = result[2] = '.';
 331         return result;
 332 }
 333
 334 void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 335 {
 336         size_t size;
 337
 338         if (list->count >= list->alloc) {
 339                 list->alloc += (list->alloc ? list->alloc : 4);
 340                 size = list->alloc * sizeof(struct refinfo *);
 341                 list->refs = xrealloc(list->refs, size);
 342         }
 343         list->refs[list->count++] = ref;
 344 }
 345
 346 struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
 347 {
 348         struct refinfo *ref;
 349
 350         ref = xmalloc(sizeof (struct refinfo));
 351         ref->refname = xstrdup(refname);
 352         ref->object = parse_object(sha1);
 353         switch (ref->object->type) {
 354         case OBJ_TAG:
 355                 ref->tag = cgit_parse_tag((struct tag *)ref->object);
 356                 break;
 357         case OBJ_COMMIT:
 358                 ref->commit = cgit_parse_commit((struct commit *)ref->object);
 359                 break;
 360         }
 361         return ref;
 362 }
 363
 364 int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
 365                   void *cb_data)
 366 {
 367         struct reflist *list = (struct reflist *)cb_data;
 368         struct refinfo *info = cgit_mk_refinfo(refname, sha1);
 369
 370         if (info)
 371                 cgit_add_ref(list, info);
 372         return 0;
 373 }
 374
 375 void cgit_diff_tree_cb(struct diff_queue_struct *q,
 376                        struct diff_options *options, void *data)
 377 {
 378         int i;
 379
 380         for (i = 0; i < q->nr; i++) {
 381                 if (q->queue[i]->status == 'U')
 382                         continue;
 383                 ((filepair_fn)data)(q->queue[i]);
 384         }
 385 }
 386
 387 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 388 {
 389         enum object_type type;
 390
 391         if (is_null_sha1(sha1)) {
 392                 file->ptr = (char *)"";
 393                 file->size = 0;
 394         } else {
 395                 file->ptr = read_sha1_file(sha1, &type,
 396                                            (unsigned long *)&file->size);
 397         }
 398         return 1;
 399 }
 400
 401 /*
 402  * Receive diff-buffers from xdiff and concatenate them as
 403  * needed across multiple callbacks.
 404  *
 405  * This is basically a copy of xdiff-interface.c/xdiff_outf(),
 406  * ripped from git and modified to use globals instead of
 407  * a special callback-struct.
 408  */
 409 char *diffbuf = NULL;
 410 int buflen = 0;
 411
 412 int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 413 {
 414         int i;
 415
 416         for (i = 0; i < nbuf; i++) {
 417                 if (mb[i].ptr[mb[i].size-1] != '\n') {
 418                         /* Incomplete line */
 419                         diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 420                         memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 421                         buflen += mb[i].size;
 422                         continue;
 423                 }
 424
 425                 /* we have a complete line */
 426                 if (!diffbuf) {
 427                         ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
 428                         continue;
 429                 }
 430                 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 431                 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 432                 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
 433                 free(diffbuf);
 434                 diffbuf = NULL;
 435                 buflen = 0;
 436         }
 437         if (diffbuf) {
 438                 ((linediff_fn)priv)(diffbuf, buflen);
 439                 free(diffbuf);
 440                 diffbuf = NULL;
 441                 buflen = 0;
 442         }
 443         return 0;
 444 }
 445
 446 int cgit_diff_files(const unsigned char *old_sha1,
 447                      const unsigned char *new_sha1,
 448                      linediff_fn fn)
 449 {
 450         mmfile_t file1, file2;
 451         xpparam_t diff_params;
 452         xdemitconf_t emit_params;
 453         xdemitcb_t emit_cb;
 454
 455         if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
 456                 return 1;
 457
 458         diff_params.flags = XDF_NEED_MINIMAL;
 459         emit_params.ctxlen = 3;
 460         emit_params.flags = XDL_EMIT_FUNCNAMES;
 461         emit_params.find_func = NULL;
 462         emit_cb.outf = filediff_cb;
 463         emit_cb.priv = fn;
 464         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 465         return 0;
 466 }
 467
 468 void cgit_diff_tree(const unsigned char *old_sha1,
 469                     const unsigned char *new_sha1,
 470                     filepair_fn fn, const char *prefix)
 471 {
 472         struct diff_options opt;
 473         int ret;
 474         int prefixlen;
 475
 476         diff_setup(&opt);
 477         opt.output_format = DIFF_FORMAT_CALLBACK;
 478         opt.detect_rename = 1;
 479         opt.rename_limit = cgit_renamelimit;
 480         DIFF_OPT_SET(&opt, RECURSIVE);
 481         opt.format_callback = cgit_diff_tree_cb;
 482         opt.format_callback_data = fn;
 483         if (prefix) {
 484                 opt.nr_paths = 1;
 485                 opt.paths = &prefix;
 486                 prefixlen = strlen(prefix);
 487                 opt.pathlens = &prefixlen;
 488         }
 489         diff_setup_done(&opt);
 490
 491         if (old_sha1 && !is_null_sha1(old_sha1))
 492                 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
 493         else
 494                 ret = diff_root_tree_sha1(new_sha1, "", &opt);
 495         diffcore_std(&opt);
 496         diff_flush(&opt);
 497 }
 498
 499 void cgit_diff_commit(struct commit *commit, filepair_fn fn)
 500 {
 501         unsigned char *old_sha1 = NULL;
 502
 503         if (commit->parents)
 504                 old_sha1 = commit->parents->item->object.sha1;
 505         cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
 506 }