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 char *cgit_root_title   = "Git repository browser";
  16 char *cgit_css          = "/cgit.css";
  17 char *cgit_logo         = "/git-logo.png";
  18 char *cgit_index_header = NULL;
  19 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
  20 char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
  21 char *cgit_virtual_root = NULL;
  22 char *cgit_script_name  = CGIT_SCRIPT_NAME;
  23 char *cgit_cache_root   = "/var/cache/cgit";
  24 char *cgit_repo_group   = NULL;
  25
  26 int cgit_nocache               =  0;
  27 int cgit_snapshots             =  0;
  28 int cgit_enable_log_filecount  =  0;
  29 int cgit_enable_log_linecount  =  0;
  30 int cgit_max_lock_attempts     =  5;
  31 int cgit_cache_root_ttl        =  5;
  32 int cgit_cache_repo_ttl        =  5;
  33 int cgit_cache_dynamic_ttl     =  5;
  34 int cgit_cache_static_ttl      = -1;
  35 int cgit_cache_max_create_time =  5;
  36
  37 int cgit_max_msg_len = 60;
  38 int cgit_max_repodesc_len = 60;
  39 int cgit_max_commit_count = 50;
  40
  41 int cgit_query_has_symref = 0;
  42 int cgit_query_has_sha1   = 0;
  43
  44 char *cgit_querystring  = NULL;
  45 char *cgit_query_repo   = NULL;
  46 char *cgit_query_page   = NULL;
  47 char *cgit_query_head   = NULL;
  48 char *cgit_query_search = NULL;
  49 char *cgit_query_sha1   = NULL;
  50 char *cgit_query_sha2   = NULL;
  51 char *cgit_query_path   = NULL;
  52 char *cgit_query_name   = NULL;
  53 int   cgit_query_ofs    = 0;
  54
  55 int htmlfd = 0;
  56
  57
  58 int cgit_get_cmd_index(const char *cmd)
  59 {
  60         static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
  61         int i;
  62
  63         for(i = 0; cmds[i]; i++)
  64                 if (!strcmp(cmd, cmds[i]))
  65                         return i + 1;
  66         return 0;
  67 }
  68
  69 int chk_zero(int result, char *msg)
  70 {
  71         if (result != 0)
  72                 die("%s: %s", msg, strerror(errno));
  73         return result;
  74 }
  75
  76 int chk_positive(int result, char *msg)
  77 {
  78         if (result <= 0)
  79                 die("%s: %s", msg, strerror(errno));
  80         return result;
  81 }
  82
  83 struct repoinfo *add_repo(const char *url)
  84 {
  85         struct repoinfo *ret;
  86
  87         if (++cgit_repolist.count > cgit_repolist.length) {
  88                 if (cgit_repolist.length == 0)
  89                         cgit_repolist.length = 8;
  90                 else
  91                         cgit_repolist.length *= 2;
  92                 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
  93                                                cgit_repolist.length *
  94                                                sizeof(struct repoinfo));
  95         }
  96
  97         ret = &cgit_repolist.repos[cgit_repolist.count-1];
  98         ret->url = xstrdup(url);
  99         ret->name = ret->url;
 100         ret->path = NULL;
 101         ret->desc = NULL;
 102         ret->owner = NULL;
 103         ret->group = cgit_repo_group;
 104         ret->defbranch = "master";
 105         ret->snapshots = cgit_snapshots;
 106         ret->enable_log_filecount = cgit_enable_log_filecount;
 107         ret->enable_log_linecount = cgit_enable_log_linecount;
 108         ret->module_link = cgit_module_link;
 109         return ret;
 110 }
 111
 112 struct repoinfo *cgit_get_repoinfo(const char *url)
 113 {
 114         int i;
 115         struct repoinfo *repo;
 116
 117         for (i=0; i<cgit_repolist.count; i++) {
 118                 repo = &cgit_repolist.repos[i];
 119                 if (!strcmp(repo->url, url))
 120                         return repo;
 121         }
 122         return NULL;
 123 }
 124
 125 void cgit_global_config_cb(const char *name, const char *value)
 126 {
 127         if (!strcmp(name, "root-title"))
 128                 cgit_root_title = xstrdup(value);
 129         else if (!strcmp(name, "css"))
 130                 cgit_css = xstrdup(value);
 131         else if (!strcmp(name, "logo"))
 132                 cgit_logo = xstrdup(value);
 133         else if (!strcmp(name, "index-header"))
 134                 cgit_index_header = xstrdup(value);
 135         else if (!strcmp(name, "logo-link"))
 136                 cgit_logo_link = xstrdup(value);
 137         else if (!strcmp(name, "module-link"))
 138                 cgit_module_link = xstrdup(value);
 139         else if (!strcmp(name, "virtual-root"))
 140                 cgit_virtual_root = xstrdup(value);
 141         else if (!strcmp(name, "nocache"))
 142                 cgit_nocache = atoi(value);
 143         else if (!strcmp(name, "snapshots"))
 144                 cgit_snapshots = atoi(value);
 145         else if (!strcmp(name, "enable-log-filecount"))
 146                 cgit_enable_log_filecount = atoi(value);
 147         else if (!strcmp(name, "enable-log-linecount"))
 148                 cgit_enable_log_linecount = atoi(value);
 149         else if (!strcmp(name, "cache-root"))
 150                 cgit_cache_root = xstrdup(value);
 151         else if (!strcmp(name, "cache-root-ttl"))
 152                 cgit_cache_root_ttl = atoi(value);
 153         else if (!strcmp(name, "cache-repo-ttl"))
 154                 cgit_cache_repo_ttl = atoi(value);
 155         else if (!strcmp(name, "cache-static-ttl"))
 156                 cgit_cache_static_ttl = atoi(value);
 157         else if (!strcmp(name, "cache-dynamic-ttl"))
 158                 cgit_cache_dynamic_ttl = atoi(value);
 159         else if (!strcmp(name, "max-message-length"))
 160                 cgit_max_msg_len = atoi(value);
 161         else if (!strcmp(name, "max-repodesc-length"))
 162                 cgit_max_repodesc_len = atoi(value);
 163         else if (!strcmp(name, "max-commit-count"))
 164                 cgit_max_commit_count = atoi(value);
 165         else if (!strcmp(name, "repo.group"))
 166                 cgit_repo_group = xstrdup(value);
 167         else if (!strcmp(name, "repo.url"))
 168                 cgit_repo = add_repo(value);
 169         else if (!strcmp(name, "repo.name"))
 170                 cgit_repo->name = xstrdup(value);
 171         else if (cgit_repo && !strcmp(name, "repo.path"))
 172                 cgit_repo->path = xstrdup(value);
 173         else if (cgit_repo && !strcmp(name, "repo.desc"))
 174                 cgit_repo->desc = xstrdup(value);
 175         else if (cgit_repo && !strcmp(name, "repo.owner"))
 176                 cgit_repo->owner = xstrdup(value);
 177         else if (cgit_repo && !strcmp(name, "repo.defbranch"))
 178                 cgit_repo->defbranch = xstrdup(value);
 179         else if (cgit_repo && !strcmp(name, "repo.snapshots"))
 180                 cgit_repo->snapshots = cgit_snapshots * atoi(value);
 181         else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
 182                 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
 183         else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
 184                 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
 185         else if (cgit_repo && !strcmp(name, "repo.module-link"))
 186                 cgit_repo->module_link= xstrdup(value);
 187         else if (!strcmp(name, "include"))
 188                 cgit_read_config(value, cgit_global_config_cb);
 189 }
 190
 191 void cgit_querystring_cb(const char *name, const char *value)
 192 {
 193         if (!strcmp(name,"r")) {
 194                 cgit_query_repo = xstrdup(value);
 195                 cgit_repo = cgit_get_repoinfo(value);
 196         } else if (!strcmp(name, "p")) {
 197                 cgit_query_page = xstrdup(value);
 198                 cgit_cmd = cgit_get_cmd_index(value);
 199         } else if (!strcmp(name, "url")) {
 200                 cgit_parse_url(value);
 201         } else if (!strcmp(name, "q")) {
 202                 cgit_query_search = xstrdup(value);
 203         } else if (!strcmp(name, "h")) {
 204                 cgit_query_head = xstrdup(value);
 205                 cgit_query_has_symref = 1;
 206         } else if (!strcmp(name, "id")) {
 207                 cgit_query_sha1 = xstrdup(value);
 208                 cgit_query_has_sha1 = 1;
 209         } else if (!strcmp(name, "id2")) {
 210                 cgit_query_sha2 = xstrdup(value);
 211                 cgit_query_has_sha1 = 1;
 212         } else if (!strcmp(name, "ofs")) {
 213                 cgit_query_ofs = atoi(value);
 214         } else if (!strcmp(name, "path")) {
 215                 cgit_query_path = xstrdup(value);
 216         } else if (!strcmp(name, "name")) {
 217                 cgit_query_name = xstrdup(value);
 218         }
 219 }
 220
 221 void *cgit_free_commitinfo(struct commitinfo *info)
 222 {
 223         free(info->author);
 224         free(info->author_email);
 225         free(info->committer);
 226         free(info->committer_email);
 227         free(info->subject);
 228         free(info);
 229         return NULL;
 230 }
 231
 232 int hextoint(char c)
 233 {
 234         if (c >= 'a' && c <= 'f')
 235                 return 10 + c - 'a';
 236         else if (c >= 'A' && c <= 'F')
 237                 return 10 + c - 'A';
 238         else if (c >= '0' && c <= '9')
 239                 return c - '0';
 240         else
 241                 return -1;
 242 }
 243
 244 void cgit_diff_tree_cb(struct diff_queue_struct *q,
 245                        struct diff_options *options, void *data)
 246 {
 247         int i;
 248
 249         for (i = 0; i < q->nr; i++) {
 250                 if (q->queue[i]->status == 'U')
 251                         continue;
 252                 ((filepair_fn)data)(q->queue[i]);
 253         }
 254 }
 255
 256 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 257 {
 258         enum object_type type;
 259
 260         if (is_null_sha1(sha1)) {
 261                 file->ptr = (char *)"";
 262                 file->size = 0;
 263         } else {
 264                 file->ptr = read_sha1_file(sha1, &type, &file->size);
 265         }
 266         return 1;
 267 }
 268
 269 /*
 270  * Receive diff-buffers from xdiff and concatenate them as
 271  * needed across multiple callbacks.
 272  *
 273  * This is basically a copy of xdiff-interface.c/xdiff_outf(),
 274  * ripped from git and modified to use globals instead of
 275  * a special callback-struct.
 276  */
 277 char *diffbuf = NULL;
 278 int buflen = 0;
 279
 280 int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 281 {
 282         int i;
 283
 284         for (i = 0; i < nbuf; i++) {
 285                 if (mb[i].ptr[mb[i].size-1] != '\n') {
 286                         /* Incomplete line */
 287                         diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 288                         memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 289                         buflen += mb[i].size;
 290                         continue;
 291                 }
 292
 293                 /* we have a complete line */
 294                 if (!diffbuf) {
 295                         ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
 296                         continue;
 297                 }
 298                 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 299                 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 300                 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
 301                 free(diffbuf);
 302                 diffbuf = NULL;
 303                 buflen = 0;
 304         }
 305         if (diffbuf) {
 306                 ((linediff_fn)priv)(diffbuf, buflen);
 307                 free(diffbuf);
 308                 diffbuf = NULL;
 309                 buflen = 0;
 310         }
 311         return 0;
 312 }
 313
 314 int cgit_diff_files(const unsigned char *old_sha1,
 315                      const unsigned char *new_sha1,
 316                      linediff_fn fn)
 317 {
 318         mmfile_t file1, file2;
 319         xpparam_t diff_params;
 320         xdemitconf_t emit_params;
 321         xdemitcb_t emit_cb;
 322
 323         if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
 324                 return 1;
 325
 326         diff_params.flags = XDF_NEED_MINIMAL;
 327         emit_params.ctxlen = 3;
 328         emit_params.flags = XDL_EMIT_FUNCNAMES;
 329         emit_cb.outf = filediff_cb;
 330         emit_cb.priv = fn;
 331         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 332         return 0;
 333 }
 334
 335 void cgit_diff_tree(const unsigned char *old_sha1,
 336                     const unsigned char *new_sha1,
 337                     filepair_fn fn)
 338 {
 339         struct diff_options opt;
 340         int ret;
 341
 342         diff_setup(&opt);
 343         opt.output_format = DIFF_FORMAT_CALLBACK;
 344         opt.detect_rename = 1;
 345         opt.recursive = 1;
 346         opt.format_callback = cgit_diff_tree_cb;
 347         opt.format_callback_data = fn;
 348         diff_setup_done(&opt);
 349
 350         if (old_sha1)
 351                 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
 352         else
 353                 ret = diff_root_tree_sha1(new_sha1, "", &opt);
 354         diffcore_std(&opt);
 355         diff_flush(&opt);
 356 }
 357
 358 void cgit_diff_commit(struct commit *commit, filepair_fn fn)
 359 {
 360         unsigned char *old_sha1 = NULL;
 361
 362         if (commit->parents)
 363                 old_sha1 = commit->parents->item->object.sha1;
 364         cgit_diff_tree(old_sha1, commit->object.sha1, fn);
 365 }