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