scan-tree.c

   1 /* scan-tree.c
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "scan-tree.h"
  11 #include "configfile.h"
  12 #include "html.h"
  13 #include <config.h>
  14
  15 /* return 1 if path contains a objects/ directory and a HEAD file */
  16 static int is_git_dir(const char *path)
  17 {
  18         struct stat st;
  19         struct strbuf pathbuf = STRBUF_INIT;
  20         int result = 0;
  21
  22         strbuf_addf(&pathbuf, "%s/objects", path);
  23         if (stat(pathbuf.buf, &st)) {
  24                 if (errno != ENOENT)
  25                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
  26                                 path, strerror(errno), errno);
  27                 goto out;
  28         }
  29         if (!S_ISDIR(st.st_mode))
  30                 goto out;
  31
  32         strbuf_reset(&pathbuf);
  33         strbuf_addf(&pathbuf, "%s/HEAD", path);
  34         if (stat(pathbuf.buf, &st)) {
  35                 if (errno != ENOENT)
  36                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
  37                                 path, strerror(errno), errno);
  38                 goto out;
  39         }
  40         if (!S_ISREG(st.st_mode))
  41                 goto out;
  42
  43         result = 1;
  44 out:
  45         strbuf_release(&pathbuf);
  46         return result;
  47 }
  48
  49 static struct cgit_repo *repo;
  50 static repo_config_fn config_fn;
  51
  52 static void scan_tree_repo_config(const char *name, const char *value)
  53 {
  54         config_fn(repo, name, value);
  55 }
  56
  57 static int gitconfig_config(const char *key, const char *value, void *cb)
  58 {
  59         const char *name;
  60
  61         if (!strcmp(key, "gitweb.owner"))
  62                 config_fn(repo, "owner", value);
  63         else if (!strcmp(key, "gitweb.description"))
  64                 config_fn(repo, "desc", value);
  65         else if (!strcmp(key, "gitweb.category"))
  66                 config_fn(repo, "section", value);
  67         else if (!strcmp(key, "gitweb.homepage"))
  68                 config_fn(repo, "homepage", value);
  69         else if (skip_prefix(key, "cgit.", &name))
  70                 config_fn(repo, name, value);
  71
  72         return 0;
  73 }
  74
  75 static char *xstrrchr(char *s, char *from, int c)
  76 {
  77         while (from >= s && *from != c)
  78                 from--;
  79         return from < s ? NULL : from;
  80 }
  81
  82 static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
  83 {
  84         struct stat st;
  85         struct passwd *pwd;
  86         size_t pathlen;
  87         struct strbuf rel = STRBUF_INIT;
  88         char *p, *slash;
  89         int n;
  90         size_t size;
  91
  92         if (stat(path->buf, &st)) {
  93                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  94                         path->buf, strerror(errno), errno);
  95                 return;
  96         }
  97
  98         strbuf_addch(path, '/');
  99         pathlen = path->len;
 100
 101         if (ctx.cfg.strict_export) {
 102                 strbuf_addstr(path, ctx.cfg.strict_export);
 103                 if(stat(path->buf, &st))
 104                         return;
 105                 strbuf_setlen(path, pathlen);
 106         }
 107
 108         strbuf_addstr(path, "noweb");
 109         if (!stat(path->buf, &st))
 110                 return;
 111         strbuf_setlen(path, pathlen);
 112
 113         if (!starts_with(path->buf, base))
 114                 strbuf_addbuf(&rel, path);
 115         else
 116                 strbuf_addstr(&rel, path->buf + strlen(base) + 1);
 117
 118         if (!strcmp(rel.buf + rel.len - 5, "/.git"))
 119                 strbuf_setlen(&rel, rel.len - 5);
 120         else if (rel.len && rel.buf[rel.len - 1] == '/')
 121                 strbuf_setlen(&rel, rel.len - 1);
 122
 123         repo = cgit_add_repo(rel.buf);
 124         config_fn = fn;
 125         if (ctx.cfg.enable_git_config) {
 126                 strbuf_addstr(path, "config");
 127                 git_config_from_file(gitconfig_config, path->buf, NULL);
 128                 strbuf_setlen(path, pathlen);
 129         }
 130
 131         if (ctx.cfg.remove_suffix) {
 132                 size_t urllen;
 133                 strip_suffix(repo->url, ".git", &urllen);
 134                 strip_suffix_mem(repo->url, &urllen, "/");
 135                 repo->url[urllen] = '\0';
 136         }
 137         repo->path = xstrdup(path->buf);
 138         while (!repo->owner) {
 139                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
 140                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
 141                                 path->buf, strerror(errno), errno);
 142                         break;
 143                 }
 144                 if (pwd->pw_gecos)
 145                         if ((p = strchr(pwd->pw_gecos, ',')))
 146                                 *p = '\0';
 147                 repo->owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 148         }
 149
 150         if (repo->desc == cgit_default_repo_desc || !repo->desc) {
 151                 strbuf_addstr(path, "description");
 152                 if (!stat(path->buf, &st))
 153                         readfile(path->buf, &repo->desc, &size);
 154                 strbuf_setlen(path, pathlen);
 155         }
 156
 157         if (ctx.cfg.section_from_path) {
 158                 n = ctx.cfg.section_from_path;
 159                 if (n > 0) {
 160                         slash = rel.buf - 1;
 161                         while (slash && n && (slash = strchr(slash + 1, '/')))
 162                                 n--;
 163                 } else {
 164                         slash = rel.buf + rel.len;
 165                         while (slash && n && (slash = xstrrchr(rel.buf, slash - 1, '/')))
 166                                 n++;
 167                 }
 168                 if (slash && !n) {
 169                         *slash = '\0';
 170                         repo->section = xstrdup(rel.buf);
 171                         *slash = '/';
 172                         if (starts_with(repo->name, repo->section)) {
 173                                 repo->name += strlen(repo->section);
 174                                 if (*repo->name == '/')
 175                                         repo->name++;
 176                         }
 177                 }
 178         }
 179
 180         strbuf_addstr(path, "cgitrc");
 181         if (!stat(path->buf, &st))
 182                 parse_configfile(path->buf, &scan_tree_repo_config);
 183
 184         strbuf_release(&rel);
 185 }
 186
 187 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 188 {
 189         DIR *dir = opendir(path);
 190         struct dirent *ent;
 191         struct strbuf pathbuf = STRBUF_INIT;
 192         size_t pathlen = strlen(path);
 193         struct stat st;
 194
 195         if (!dir) {
 196                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 197                         path, strerror(errno), errno);
 198                 return;
 199         }
 200
 201         strbuf_add(&pathbuf, path, strlen(path));
 202         if (is_git_dir(pathbuf.buf)) {
 203                 add_repo(base, &pathbuf, fn);
 204                 goto end;
 205         }
 206         strbuf_addstr(&pathbuf, "/.git");
 207         if (is_git_dir(pathbuf.buf)) {
 208                 add_repo(base, &pathbuf, fn);
 209                 goto end;
 210         }
 211         /*
 212          * Add one because we don't want to lose the trailing '/' when we
 213          * reset the length of pathbuf in the loop below.
 214          */
 215         pathlen++;
 216         while ((ent = readdir(dir)) != NULL) {
 217                 if (ent->d_name[0] == '.') {
 218                         if (ent->d_name[1] == '\0')
 219                                 continue;
 220                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 221                                 continue;
 222                         if (!ctx.cfg.scan_hidden_path)
 223                                 continue;
 224                 }
 225                 strbuf_setlen(&pathbuf, pathlen);
 226                 strbuf_addstr(&pathbuf, ent->d_name);
 227                 if (stat(pathbuf.buf, &st)) {
 228                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 229                                 pathbuf.buf, strerror(errno), errno);
 230                         continue;
 231                 }
 232                 if (S_ISDIR(st.st_mode))
 233                         scan_path(base, pathbuf.buf, fn);
 234         }
 235 end:
 236         strbuf_release(&pathbuf);
 237         closedir(dir);
 238 }
 239
 240 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 241 {
 242         struct strbuf line = STRBUF_INIT;
 243         FILE *projects;
 244         int err;
 245
 246         projects = fopen(projectsfile, "r");
 247         if (!projects) {
 248                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 249                         projectsfile, strerror(errno), errno);
 250                 return;
 251         }
 252         while (strbuf_getline(&line, projects) != EOF) {
 253                 if (!line.len)
 254                         continue;
 255                 strbuf_insert(&line, 0, "/", 1);
 256                 strbuf_insert(&line, 0, path, strlen(path));
 257                 scan_path(path, line.buf, fn);
 258         }
 259         if ((err = ferror(projects))) {
 260                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 261                         projectsfile, strerror(err), err);
 262         }
 263         fclose(projects);
 264         strbuf_release(&line);
 265 }
 266
 267 void scan_tree(const char *path, repo_config_fn fn)
 268 {
 269         scan_path(path, path, fn);
 270 }