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