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