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 struct cgit_repo *repo;
  49 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         if (!strcmp(key, "gitweb.owner"))
  59                 config_fn(repo, "owner", value);
  60         else if (!strcmp(key, "gitweb.description"))
  61                 config_fn(repo, "desc", value);
  62         else if (!strcmp(key, "gitweb.category"))
  63                 config_fn(repo, "section", value);
  64         else if (starts_with(key, "cgit."))
  65                 config_fn(repo, key + 5, value);
  66
  67         return 0;
  68 }
  69
  70 static char *xstrrchr(char *s, char *from, int c)
  71 {
  72         while (from >= s && *from != c)
  73                 from--;
  74         return from < s ? NULL : from;
  75 }
  76
  77 static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
  78 {
  79         struct stat st;
  80         struct passwd *pwd;
  81         size_t pathlen;
  82         struct strbuf rel = STRBUF_INIT;
  83         char *p, *slash;
  84         int n;
  85         size_t size;
  86
  87         if (stat(path->buf, &st)) {
  88                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  89                         path->buf, strerror(errno), errno);
  90                 return;
  91         }
  92
  93         strbuf_addch(path, '/');
  94         pathlen = path->len;
  95
  96         if (ctx.cfg.strict_export) {
  97                 strbuf_addstr(path, ctx.cfg.strict_export);
  98                 if(stat(path->buf, &st))
  99                         return;
 100                 strbuf_setlen(path, pathlen);
 101         }
 102
 103         strbuf_addstr(path, "noweb");
 104         if (!stat(path->buf, &st))
 105                 return;
 106         strbuf_setlen(path, pathlen);
 107
 108         if (!starts_with(path->buf, base))
 109                 strbuf_addbuf(&rel, path);
 110         else
 111                 strbuf_addstr(&rel, path->buf + strlen(base) + 1);
 112
 113         if (!strcmp(rel.buf + rel.len - 5, "/.git"))
 114                 strbuf_setlen(&rel, rel.len - 5);
 115         else if (rel.len && rel.buf[rel.len - 1] == '/')
 116                 strbuf_setlen(&rel, rel.len - 1);
 117
 118         fprintf(stderr, "add_repo(): %s\n", rel.buf);
 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                         fprintf(stderr, "repo->name %s, repo->section %s\n", repo->name, repo->section);
 166                         if (starts_with(repo->name, repo->section)) {
 167                                 repo->name += strlen(repo->section);
 168                                 if (*repo->name == '/')
 169                                         repo->name++;
 170                         }
 171                 }
 172         }
 173
 174         strbuf_addstr(path, "cgitrc");
 175         if (!stat(path->buf, &st))
 176                 parse_configfile(xstrdup(path->buf), &repo_config);
 177
 178         strbuf_release(&rel);
 179 }
 180
 181 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 182 {
 183         DIR *dir = opendir(path);
 184         struct dirent *ent;
 185         struct strbuf pathbuf = STRBUF_INIT;
 186         size_t pathlen = strlen(path);
 187         struct stat st;
 188
 189         fprintf(stderr, "scan_path(): %s\n", path);
 190         if (!dir) {
 191                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 192                         path, strerror(errno), errno);
 193                 return;
 194         }
 195
 196         strbuf_add(&pathbuf, path, strlen(path));
 197         if (is_git_dir(pathbuf.buf)) {
 198                 fprintf(stderr, "scan_path() is_git_dir: %s\n", path);
 199                 add_repo(base, &pathbuf, fn);
 200                 goto end;
 201         }
 202         strbuf_addstr(&pathbuf, "/.git");
 203         if (is_git_dir(pathbuf.buf)) {
 204                 add_repo(base, &pathbuf, fn);
 205                 goto end;
 206         }
 207         /*
 208          * Add one because we don't want to lose the trailing '/' when we
 209          * reset the length of pathbuf in the loop below.
 210          */
 211         pathlen++;
 212         while ((ent = readdir(dir)) != NULL) {
 213                 if (ent->d_name[0] == '.') {
 214                         if (ent->d_name[1] == '\0')
 215                                 continue;
 216                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 217                                 continue;
 218                         if (!ctx.cfg.scan_hidden_path)
 219                                 continue;
 220                 }
 221                 strbuf_setlen(&pathbuf, pathlen);
 222                 strbuf_addstr(&pathbuf, ent->d_name);
 223                 if (stat(pathbuf.buf, &st)) {
 224                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 225                                 pathbuf.buf, strerror(errno), errno);
 226                         continue;
 227                 }
 228                 if (S_ISDIR(st.st_mode))
 229                         scan_path(base, pathbuf.buf, fn);
 230         }
 231 end:
 232         strbuf_release(&pathbuf);
 233         closedir(dir);
 234 }
 235
 236 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 237 {
 238         struct strbuf line = STRBUF_INIT;
 239         FILE *projects;
 240         int err;
 241
 242         projects = fopen(projectsfile, "r");
 243         if (!projects) {
 244                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 245                         projectsfile, strerror(errno), errno);
 246                 return;
 247         }
 248         while (strbuf_getline(&line, projects, '\n') != EOF) {
 249                 if (!line.len)
 250                         continue;
 251                 strbuf_insert(&line, 0, "/", 1);
 252                 strbuf_insert(&line, 0, path, strlen(path));
 253                 scan_path(path, line.buf, fn);
 254         }
 255         if ((err = ferror(projects))) {
 256                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 257                         projectsfile, strerror(err), err);
 258         }
 259         fclose(projects);
 260         strbuf_release(&line);
 261 }
 262
 263 void scan_tree(const char *path, repo_config_fn fn)
 264 {
 265         scan_path(path, path, fn);
 266 }