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