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