scan-tree.c

   1 /* scan-tree.c
   2  *
   3  * Copyright (C) 2008-2009 Lars Hjemli
   4  * Copyright (C) 2010-2013 Jason A. Donenfeld <Jason@zx2c4.com>
   5  *
   6  * Licensed under GNU General Public License v2
   7  *   (see COPYING for full license text)
   8  */
   9
  10 #include "cgit.h"
  11 #include "scan-tree.h"
  12 #include "configfile.h"
  13 #include "html.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 struct cgit_repo *repo;
  50 repo_config_fn config_fn;
  51
  52 static void 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         if (!strcmp(key, "gitweb.owner"))
  60                 config_fn(repo, "owner", value);
  61         else if (!strcmp(key, "gitweb.description"))
  62                 config_fn(repo, "desc", value);
  63         else if (!strcmp(key, "gitweb.category"))
  64                 config_fn(repo, "section", value);
  65         else if (!prefixcmp(key, "cgit."))
  66                 config_fn(repo, key + 5, value);
  67
  68         return 0;
  69 }
  70
  71 static char *xstrrchr(char *s, char *from, int c)
  72 {
  73         while (from >= s && *from != c)
  74                 from--;
  75         return from < s ? NULL : from;
  76 }
  77
  78 static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
  79 {
  80         struct stat st;
  81         struct passwd *pwd;
  82         size_t pathlen;
  83         struct strbuf rel = STRBUF_INIT;
  84         char *p, *slash;
  85         int n;
  86         size_t size;
  87
  88         if (stat(path->buf, &st)) {
  89                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  90                         path->buf, strerror(errno), errno);
  91                 return;
  92         }
  93
  94         strbuf_addch(path, '/');
  95         pathlen = path->len;
  96
  97         if (ctx.cfg.strict_export) {
  98                 strbuf_addstr(path, ctx.cfg.strict_export);
  99                 if(stat(path->buf, &st))
 100                         return;
 101                 strbuf_setlen(path, pathlen);
 102         }
 103
 104         strbuf_addstr(path, "noweb");
 105         if (!stat(path->buf, &st))
 106                 return;
 107         strbuf_setlen(path, pathlen);
 108
 109         if (strncmp(base, path->buf, strlen(base)))
 110                 strbuf_addbuf(&rel, path);
 111         else
 112                 strbuf_addstr(&rel, path->buf + strlen(base) + 1);
 113
 114         if (!strcmp(rel.buf + rel.len - 5, "/.git"))
 115                 strbuf_setlen(&rel, rel.len - 5);
 116         else if (rel.len && rel.buf[rel.len - 1] == '/')
 117                 strbuf_setlen(&rel, rel.len - 1);
 118
 119         repo = cgit_add_repo(rel.buf);
 120         config_fn = fn;
 121         if (ctx.cfg.enable_git_config) {
 122                 strbuf_addstr(path, "config");
 123                 git_config_from_file(gitconfig_config, path->buf, NULL);
 124                 strbuf_setlen(path, pathlen);
 125         }
 126
 127         if (ctx.cfg.remove_suffix)
 128                 if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
 129                         *p = '\0';
 130         repo->path = xstrdup(path->buf);
 131         while (!repo->owner) {
 132                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
 133                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
 134                                 path->buf, strerror(errno), errno);
 135                         break;
 136                 }
 137                 if (pwd->pw_gecos)
 138                         if ((p = strchr(pwd->pw_gecos, ',')))
 139                                 *p = '\0';
 140                 repo->owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 141         }
 142
 143         if (repo->desc == cgit_default_repo_desc || !repo->desc) {
 144                 strbuf_addstr(path, "description");
 145                 if (!stat(path->buf, &st))
 146                         readfile(path->buf, &repo->desc, &size);
 147                 strbuf_setlen(path, pathlen);
 148         }
 149
 150         if (ctx.cfg.section_from_path) {
 151                 n = ctx.cfg.section_from_path;
 152                 if (n > 0) {
 153                         slash = rel.buf - 1;
 154                         while (slash && n && (slash = strchr(slash + 1, '/')))
 155                                 n--;
 156                 } else {
 157                         slash = rel.buf + rel.len;
 158                         while (slash && n && (slash = xstrrchr(rel.buf, slash - 1, '/')))
 159                                 n++;
 160                 }
 161                 if (slash && !n) {
 162                         *slash = '\0';
 163                         repo->section = xstrdup(rel.buf);
 164                         *slash = '/';
 165                         if (!prefixcmp(repo->name, repo->section)) {
 166                                 repo->name += strlen(repo->section);
 167                                 if (*repo->name == '/')
 168                                         repo->name++;
 169                         }
 170                 }
 171         }
 172
 173         strbuf_addstr(path, "cgitrc");
 174         if (!stat(path->buf, &st))
 175                 parse_configfile(xstrdup(path->buf), &repo_config);
 176
 177         strbuf_release(&rel);
 178 }
 179
 180 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 181 {
 182         DIR *dir = opendir(path);
 183         struct dirent *ent;
 184         struct strbuf pathbuf = STRBUF_INIT;
 185         size_t pathlen = strlen(path);
 186         struct stat st;
 187
 188         if (!dir) {
 189                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 190                         path, strerror(errno), errno);
 191                 return;
 192         }
 193
 194         strbuf_add(&pathbuf, path, strlen(path));
 195         if (is_git_dir(pathbuf.buf)) {
 196                 add_repo(base, &pathbuf, fn);
 197                 goto end;
 198         }
 199         strbuf_addstr(&pathbuf, "/.git");
 200         if (is_git_dir(pathbuf.buf)) {
 201                 add_repo(base, &pathbuf, fn);
 202                 goto end;
 203         }
 204         /*
 205          * Add one because we don't want to lose the trailing '/' when we
 206          * reset the length of pathbuf in the loop below.
 207          */
 208         pathlen++;
 209         while ((ent = readdir(dir)) != NULL) {
 210                 if (ent->d_name[0] == '.') {
 211                         if (ent->d_name[1] == '\0')
 212                                 continue;
 213                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 214                                 continue;
 215                         if (!ctx.cfg.scan_hidden_path)
 216                                 continue;
 217                 }
 218                 strbuf_setlen(&pathbuf, pathlen);
 219                 strbuf_addstr(&pathbuf, ent->d_name);
 220                 if (stat(pathbuf.buf, &st)) {
 221                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 222                                 pathbuf.buf, strerror(errno), errno);
 223                         continue;
 224                 }
 225                 if (S_ISDIR(st.st_mode))
 226                         scan_path(base, pathbuf.buf, fn);
 227         }
 228 end:
 229         strbuf_release(&pathbuf);
 230         closedir(dir);
 231 }
 232
 233 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 234 {
 235         struct strbuf line = STRBUF_INIT;
 236         FILE *projects;
 237         int err;
 238
 239         projects = fopen(projectsfile, "r");
 240         if (!projects) {
 241                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 242                         projectsfile, strerror(errno), errno);
 243                 return;
 244         }
 245         while (strbuf_getline(&line, projects, '\n') != EOF) {
 246                 if (!line.len)
 247                         continue;
 248                 strbuf_insert(&line, 0, "/", 1);
 249                 strbuf_insert(&line, 0, path, strlen(path));
 250                 scan_path(path, line.buf, fn);
 251         }
 252         if ((err = ferror(projects))) {
 253                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 254                         projectsfile, strerror(err), err);
 255         }
 256         fclose(projects);
 257         strbuf_release(&line);
 258 }
 259
 260 void scan_tree(const char *path, repo_config_fn fn)
 261 {
 262         scan_path(path, path, fn);
 263 }