scan-tree.c

   1 /* scan-tree.c
   2  *
   3  * Copyright (C) 2008-2009 Lars Hjemli
   4  * Copyright (C) 2010, 2012 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 char *desc;
  52 char *section;
  53
  54 static void repo_config(const char *name, const char *value)
  55 {
  56         config_fn(repo, name, value);
  57 }
  58
  59 static int gitweb_config(const char *key, const char *value, void *cb)
  60 {
  61         if (ctx.cfg.enable_gitweb_owner && !strcmp(key, "gitweb.owner"))
  62                 owner = xstrdup(value);
  63         else if (ctx.cfg.enable_gitweb_desc && !strcmp(key, "gitweb.description"))
  64                 desc = xstrdup(value);
  65         else if (ctx.cfg.enable_gitweb_section && !strcmp(key, "gitweb.category"))
  66                 section = xstrdup(value);
  67         return 0;
  68 }
  69
  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, const char *path, repo_config_fn fn)
  80 {
  81         struct stat st;
  82         struct passwd *pwd;
  83         char *rel, *p, *slash;
  84         int n;
  85         size_t size;
  86
  87         if (stat(path, &st)) {
  88                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  89                         path, strerror(errno), errno);
  90                 return;
  91         }
  92
  93         if (ctx.cfg.strict_export && stat(fmt("%s/%s", path, ctx.cfg.strict_export), &st))
  94                 return;
  95
  96         if (!stat(fmt("%s/noweb", path), &st))
  97                 return;
  98
  99         owner = NULL;
 100         desc = NULL;
 101         section = NULL;
 102         git_config_from_file(gitweb_config, fmt("%s/config", path), NULL);
 103
 104         if (base == path)
 105                 rel = xstrdup(fmt("%s", path));
 106         else
 107                 rel = xstrdup(fmt("%s", path + strlen(base) + 1));
 108
 109         if (!strcmp(rel + strlen(rel) - 5, "/.git"))
 110                 rel[strlen(rel) - 5] = '\0';
 111
 112         repo = cgit_add_repo(rel);
 113         if (ctx.cfg.remove_suffix)
 114                 if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
 115                         *p = '\0';
 116         repo->name = repo->url;
 117         repo->path = xstrdup(path);
 118         while (!owner) {
 119                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
 120                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
 121                                 path, strerror(errno), errno);
 122                         break;
 123                 }
 124                 if (pwd->pw_gecos)
 125                         if ((p = strchr(pwd->pw_gecos, ',')))
 126                                 *p = '\0';
 127                 owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 128         }
 129         repo->owner = owner;
 130
 131         if (desc)
 132                 repo->desc = desc;
 133         else {
 134                 p = fmt("%s/description", path);
 135                 if (!stat(p, &st))
 136                         readfile(p, &repo->desc, &size);
 137         }
 138
 139         if (!repo->readme) {
 140                 p = fmt("%s/README.html", path);
 141                 if (!stat(p, &st))
 142                         repo->readme = "README.html";
 143         }
 144         if (section)
 145                 repo->section = section;
 146         if (ctx.cfg.section_from_path) {
 147                 n  = ctx.cfg.section_from_path;
 148                 if (n > 0) {
 149                         slash = rel;
 150                         while (slash && n && (slash = strchr(slash, '/')))
 151                                 n--;
 152                 } else {
 153                         slash = rel + strlen(rel);
 154                         while (slash && n && (slash = xstrrchr(rel, slash, '/')))
 155                                 n++;
 156                 }
 157                 if (slash && !n) {
 158                         *slash = '\0';
 159                         repo->section = xstrdup(rel);
 160                         *slash = '/';
 161                         if (!prefixcmp(repo->name, repo->section)) {
 162                                 repo->name += strlen(repo->section);
 163                                 if (*repo->name == '/')
 164                                         repo->name++;
 165                         }
 166                 }
 167         }
 168
 169         p = fmt("%s/cgitrc", path);
 170         if (!stat(p, &st)) {
 171                 config_fn = fn;
 172                 parse_configfile(xstrdup(p), &repo_config);
 173         }
 174
 175         free(rel);
 176 }
 177
 178 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 179 {
 180         DIR *dir = opendir(path);
 181         struct dirent *ent;
 182         char *buf;
 183         struct stat st;
 184
 185         if (!dir) {
 186                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 187                         path, strerror(errno), errno);
 188                 return;
 189         }
 190         if (is_git_dir(path)) {
 191                 add_repo(base, path, fn);
 192                 goto end;
 193         }
 194         if (is_git_dir(fmt("%s/.git", path))) {
 195                 add_repo(base, fmt("%s/.git", path), fn);
 196                 goto end;
 197         }
 198         while((ent = readdir(dir)) != NULL) {
 199                 if (ent->d_name[0] == '.') {
 200                         if (ent->d_name[1] == '\0')
 201                                 continue;
 202                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 203                                 continue;
 204                         if (!ctx.cfg.scan_hidden_path)
 205                                 continue;
 206                 }
 207                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
 208                 if (!buf) {
 209                         fprintf(stderr, "Alloc error on %s: %s (%d)\n",
 210                                 path, strerror(errno), errno);
 211                         exit(1);
 212                 }
 213                 sprintf(buf, "%s/%s", path, ent->d_name);
 214                 if (stat(buf, &st)) {
 215                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 216                                 buf, strerror(errno), errno);
 217                         free(buf);
 218                         continue;
 219                 }
 220                 if (S_ISDIR(st.st_mode))
 221                         scan_path(base, buf, fn);
 222                 free(buf);
 223         }
 224 end:
 225         closedir(dir);
 226 }
 227
 228 #define lastc(s) s[strlen(s) - 1]
 229
 230 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 231 {
 232         char line[MAX_PATH * 2], *z;
 233         FILE *projects;
 234         int err;
 235
 236         projects = fopen(projectsfile, "r");
 237         if (!projects) {
 238                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 239                         projectsfile, strerror(errno), errno);
 240                 return;
 241         }
 242         while (fgets(line, sizeof(line), projects) != NULL) {
 243                 for (z = &lastc(line);
 244                      strlen(line) && strchr("\n\r", *z);
 245                      z = &lastc(line))
 246                         *z = '\0';
 247                 if (strlen(line))
 248                         scan_path(path, fmt("%s/%s", path, line), fn);
 249         }
 250         if ((err = ferror(projects))) {
 251                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 252                         projectsfile, strerror(err), err);
 253         }
 254         fclose(projects);
 255 }
 256
 257 void scan_tree(const char *path, repo_config_fn fn)
 258 {
 259         scan_path(path, path, fn);
 260 }