scan-tree.c

   1 /* scan-tree.c
   2  *
   3  * Copyright (C) 2008-2009 Lars Hjemli
   4  * Copyright (C) 2010 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 "configfile.h"
  12 #include "html.h"
  13
  14 #define MAX_PATH 4096
  15
  16 /* return 1 if path contains a objects/ directory and a HEAD file */
  17 static int is_git_dir(const char *path)
  18 {
  19         struct stat st;
  20         static char buf[MAX_PATH];
  21
  22         if (snprintf(buf, MAX_PATH, "%s/objects", path) >= MAX_PATH) {
  23                 fprintf(stderr, "Insanely long path: %s\n", path);
  24                 return 0;
  25         }
  26         if (stat(buf, &st)) {
  27                 if (errno != ENOENT)
  28                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
  29                                 path, strerror(errno), errno);
  30                 return 0;
  31         }
  32         if (!S_ISDIR(st.st_mode))
  33                 return 0;
  34
  35         sprintf(buf, "%s/HEAD", path);
  36         if (stat(buf, &st)) {
  37                 if (errno != ENOENT)
  38                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
  39                                 path, strerror(errno), errno);
  40                 return 0;
  41         }
  42         if (!S_ISREG(st.st_mode))
  43                 return 0;
  44
  45         return 1;
  46 }
  47
  48 struct cgit_repo *repo;
  49 repo_config_fn config_fn;
  50 char *owner;
  51
  52 static void repo_config(const char *name, const char *value)
  53 {
  54         config_fn(repo, name, value);
  55 }
  56
  57 static int git_owner_config(const char *key, const char *value, void *cb)
  58 {
  59         if (!strcmp(key, "gitweb.owner"))
  60                 owner = xstrdup(value);
  61         return 0;
  62 }
  63
  64 static char *xstrrchr(char *s, char *from, int c)
  65 {
  66         while (from >= s && *from != c)
  67                 from--;
  68         return from < s ? NULL : from;
  69 }
  70
  71 static void add_repo(const char *base, const char *path, repo_config_fn fn)
  72 {
  73         struct stat st;
  74         struct passwd *pwd;
  75         char *rel, *p, *slash;
  76         int n;
  77         size_t size;
  78
  79         if (stat(path, &st)) {
  80                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  81                         path, strerror(errno), errno);
  82                 return;
  83         }
  84         if (!stat(fmt("%s/noweb", path), &st))
  85                 return;
  86
  87         owner = NULL;
  88         if (ctx.cfg.enable_gitweb_owner)
  89                 git_config_from_file(git_owner_config, fmt("%s/config", path), NULL);
  90         if (base == path)
  91                 rel = xstrdup(fmt("%s", path));
  92         else
  93                 rel = xstrdup(fmt("%s", path + strlen(base) + 1));
  94
  95         if (!strcmp(rel + strlen(rel) - 5, "/.git"))
  96                 rel[strlen(rel) - 5] = '\0';
  97
  98         repo = cgit_add_repo(rel);
  99         if (ctx.cfg.remove_suffix)
 100                 if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
 101                         *p = '\0';
 102         repo->name = repo->url;
 103         repo->path = xstrdup(path);
 104         while (!owner) {
 105                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
 106                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
 107                                 path, strerror(errno), errno);
 108                         break;
 109                 }
 110                 if (pwd->pw_gecos)
 111                         if ((p = strchr(pwd->pw_gecos, ',')))
 112                                 *p = '\0';
 113                 owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 114         }
 115         repo->owner = owner;
 116
 117         p = fmt("%s/description", path);
 118         if (!stat(p, &st))
 119                 readfile(p, &repo->desc, &size);
 120
 121         if (!repo->readme) {
 122                 p = fmt("%s/README.html", path);
 123                 if (!stat(p, &st))
 124                         repo->readme = "README.html";
 125         }
 126         if (ctx.cfg.section_from_path) {
 127                 n  = ctx.cfg.section_from_path;
 128                 if (n > 0) {
 129                         slash = rel;
 130                         while (slash && n && (slash = strchr(slash, '/')))
 131                                 n--;
 132                 } else {
 133                         slash = rel + strlen(rel);
 134                         while (slash && n && (slash = xstrrchr(rel, slash, '/')))
 135                                 n++;
 136                 }
 137                 if (slash && !n) {
 138                         *slash = '\0';
 139                         repo->section = xstrdup(rel);
 140                         *slash = '/';
 141                         if (!prefixcmp(repo->name, repo->section)) {
 142                                 repo->name += strlen(repo->section);
 143                                 if (*repo->name == '/')
 144                                         repo->name++;
 145                         }
 146                 }
 147         }
 148
 149         p = fmt("%s/cgitrc", path);
 150         if (!stat(p, &st)) {
 151                 config_fn = fn;
 152                 parse_configfile(xstrdup(p), &repo_config);
 153         }
 154 }
 155
 156 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 157 {
 158         DIR *dir;
 159         struct dirent *ent;
 160         char *buf;
 161         struct stat st;
 162
 163         if (is_git_dir(path)) {
 164                 add_repo(base, path, fn);
 165                 return;
 166         }
 167         if (is_git_dir(fmt("%s/.git", path))) {
 168                 add_repo(base, fmt("%s/.git", path), fn);
 169                 return;
 170         }
 171         dir = opendir(path);
 172         if (!dir) {
 173                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 174                         path, strerror(errno), errno);
 175                 return;
 176         }
 177         while((ent = readdir(dir)) != NULL) {
 178                 if (ent->d_name[0] == '.') {
 179                         if (ent->d_name[1] == '\0')
 180                                 continue;
 181                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 182                                 continue;
 183                 }
 184                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
 185                 if (!buf) {
 186                         fprintf(stderr, "Alloc error on %s: %s (%d)\n",
 187                                 path, strerror(errno), errno);
 188                         exit(1);
 189                 }
 190                 sprintf(buf, "%s/%s", path, ent->d_name);
 191                 if (stat(buf, &st)) {
 192                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 193                                 buf, strerror(errno), errno);
 194                         free(buf);
 195                         continue;
 196                 }
 197                 if (S_ISDIR(st.st_mode))
 198                         scan_path(base, buf, fn);
 199                 free(buf);
 200         }
 201         closedir(dir);
 202 }
 203
 204 #define lastc(s) s[strlen(s) - 1]
 205
 206 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 207 {
 208         char line[MAX_PATH * 2], *z;
 209         FILE *projects;
 210         int err;
 211
 212         projects = fopen(projectsfile, "r");
 213         if (!projects) {
 214                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 215                         projectsfile, strerror(errno), errno);
 216         }
 217         while (fgets(line, sizeof(line), projects) != NULL) {
 218                 for (z = &lastc(line);
 219                      strlen(line) && strchr("\n\r", *z);
 220                      z = &lastc(line))
 221                         *z = '\0';
 222                 if (strlen(line))
 223                         scan_path(path, fmt("%s/%s", path, line), fn);
 224         }
 225         if ((err = ferror(projects))) {
 226                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 227                         projectsfile, strerror(err), err);
 228         }
 229         fclose(projects);
 230 }
 231
 232 void scan_tree(const char *path, repo_config_fn fn)
 233 {
 234         scan_path(path, path, fn);
 235 }