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         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         repo = cgit_add_repo(rel.buf);
 119         config_fn = fn;
 120         if (ctx.cfg.enable_git_config) {
 121                 strbuf_addstr(path, "config");
 122                 git_config_from_file(gitconfig_config, path->buf, NULL);
 123                 strbuf_setlen(path, pathlen);
 124         }
 125
 126         if (ctx.cfg.remove_suffix) {
 127                 size_t urllen;
 128                 strip_suffix(repo->url, ".git", &urllen);
 129                 strip_suffix_mem(repo->url, &urllen, "/");
 130                 repo->url[urllen] = '\0';
 131         }
 132         repo->path = xstrdup(path->buf);
 133         while (!repo->owner) {
 134                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
 135                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
 136                                 path->buf, strerror(errno), errno);
 137                         break;
 138                 }
 139                 if (pwd->pw_gecos)
 140                         if ((p = strchr(pwd->pw_gecos, ',')))
 141                                 *p = '\0';
 142                 repo->owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 143         }
 144
 145         if (repo->desc == cgit_default_repo_desc || !repo->desc) {
 146                 strbuf_addstr(path, "description");
 147                 if (!stat(path->buf, &st))
 148                         readfile(path->buf, &repo->desc, &size);
 149                 strbuf_setlen(path, pathlen);
 150         }
 151
 152         if (ctx.cfg.section_from_path) {
 153                 n = ctx.cfg.section_from_path;
 154                 if (n > 0) {
 155                         slash = rel.buf - 1;
 156                         while (slash && n && (slash = strchr(slash + 1, '/')))
 157                                 n--;
 158                 } else {
 159                         slash = rel.buf + rel.len;
 160                         while (slash && n && (slash = xstrrchr(rel.buf, slash - 1, '/')))
 161                                 n++;
 162                 }
 163                 if (slash && !n) {
 164                         *slash = '\0';
 165                         repo->section = xstrdup(rel.buf);
 166                         *slash = '/';
 167                         if (starts_with(repo->name, repo->section)) {
 168                                 repo->name += strlen(repo->section);
 169                                 if (*repo->name == '/')
 170                                         repo->name++;
 171                         }
 172                 }
 173         }
 174
 175         strbuf_addstr(path, "cgitrc");
 176         if (!stat(path->buf, &st))
 177                 parse_configfile(xstrdup(path->buf), &repo_config);
 178
 179         strbuf_release(&rel);
 180 }
 181
 182 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 183 {
 184         DIR *dir = opendir(path);
 185         struct dirent *ent;
 186         struct strbuf pathbuf = STRBUF_INIT;
 187         size_t pathlen = strlen(path);
 188         struct stat st;
 189
 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                 add_repo(base, &pathbuf, fn);
 199                 goto end;
 200         }
 201         strbuf_addstr(&pathbuf, "/.git");
 202         if (is_git_dir(pathbuf.buf)) {
 203                 add_repo(base, &pathbuf, fn);
 204                 goto end;
 205         }
 206         /*
 207          * Add one because we don't want to lose the trailing '/' when we
 208          * reset the length of pathbuf in the loop below.
 209          */
 210         pathlen++;
 211         while ((ent = readdir(dir)) != NULL) {
 212                 if (ent->d_name[0] == '.') {
 213                         if (ent->d_name[1] == '\0')
 214                                 continue;
 215                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 216                                 continue;
 217                         if (!ctx.cfg.scan_hidden_path)
 218                                 continue;
 219                 }
 220                 strbuf_setlen(&pathbuf, pathlen);
 221                 strbuf_addstr(&pathbuf, ent->d_name);
 222                 if (stat(pathbuf.buf, &st)) {
 223                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 224                                 pathbuf.buf, strerror(errno), errno);
 225                         continue;
 226                 }
 227                 if (S_ISDIR(st.st_mode))
 228                         scan_path(base, pathbuf.buf, fn);
 229         }
 230 end:
 231         strbuf_release(&pathbuf);
 232         closedir(dir);
 233 }
 234
 235 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 236 {
 237         struct strbuf line = STRBUF_INIT;
 238         FILE *projects;
 239         int err;
 240
 241         projects = fopen(projectsfile, "r");
 242         if (!projects) {
 243                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 244                         projectsfile, strerror(errno), errno);
 245                 return;
 246         }
 247         while (strbuf_getline(&line, projects, '\n') != EOF) {
 248                 if (!line.len)
 249                         continue;
 250                 strbuf_insert(&line, 0, "/", 1);
 251                 strbuf_insert(&line, 0, path, strlen(path));
 252                 scan_path(path, line.buf, fn);
 253         }
 254         if ((err = ferror(projects))) {
 255                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 256                         projectsfile, strerror(err), err);
 257         }
 258         fclose(projects);
 259         strbuf_release(&line);
 260 }
 261
 262 void scan_tree(const char *path, repo_config_fn fn)
 263 {
 264         scan_path(path, path, fn);
 265 }