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