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 void add_repo(const char *base, const char *path, repo_config_fn fn)
  65 {
  66         struct stat st;
  67         struct passwd *pwd;
  68         char *p;
  69         size_t size;
  70
  71         if (stat(path, &st)) {
  72                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  73                         path, strerror(errno), errno);
  74                 return;
  75         }
  76         if (!stat(fmt("%s/noweb", path), &st))
  77                 return;
  78
  79         owner = NULL;
  80         if (ctx.cfg.enable_gitweb_owner)
  81                 git_config_from_file(git_owner_config, fmt("%s/config", path), NULL);
  82         if (base == path)
  83                 p = fmt("%s", path);
  84         else
  85                 p = fmt("%s", path + strlen(base) + 1);
  86
  87         if (!strcmp(p + strlen(p) - 5, "/.git"))
  88                 p[strlen(p) - 5] = '\0';
  89
  90         repo = cgit_add_repo(xstrdup(p));
  91         if (ctx.cfg.remove_suffix)
  92                 if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
  93                         *p = '\0';
  94         repo->name = repo->url;
  95         repo->path = xstrdup(path);
  96         while (!owner) {
  97                 if ((pwd = getpwuid(st.st_uid)) == NULL) {
  98                         fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
  99                                 path, strerror(errno), errno);
 100                         break;
 101                 }
 102                 if (pwd->pw_gecos)
 103                         if ((p = strchr(pwd->pw_gecos, ',')))
 104                                 *p = '\0';
 105                 owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
 106         }
 107         repo->owner = owner;
 108
 109         p = fmt("%s/description", path);
 110         if (!stat(p, &st))
 111                 readfile(p, &repo->desc, &size);
 112
 113         p = fmt("%s/README.html", path);
 114         if (!stat(p, &st))
 115                 repo->readme = "README.html";
 116
 117         p = fmt("%s/cgitrc", path);
 118         if (!stat(p, &st)) {
 119                 config_fn = fn;
 120                 parse_configfile(xstrdup(p), &repo_config);
 121         }
 122 }
 123
 124 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 125 {
 126         DIR *dir;
 127         struct dirent *ent;
 128         char *buf;
 129         struct stat st;
 130
 131         if (is_git_dir(path)) {
 132                 add_repo(base, path, fn);
 133                 return;
 134         }
 135         if (is_git_dir(fmt("%s/.git", path))) {
 136                 add_repo(base, fmt("%s/.git", path), fn);
 137                 return;
 138         }
 139         dir = opendir(path);
 140         if (!dir) {
 141                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 142                         path, strerror(errno), errno);
 143                 return;
 144         }
 145         while((ent = readdir(dir)) != NULL) {
 146                 if (ent->d_name[0] == '.') {
 147                         if (ent->d_name[1] == '\0')
 148                                 continue;
 149                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 150                                 continue;
 151                 }
 152                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
 153                 if (!buf) {
 154                         fprintf(stderr, "Alloc error on %s: %s (%d)\n",
 155                                 path, strerror(errno), errno);
 156                         exit(1);
 157                 }
 158                 sprintf(buf, "%s/%s", path, ent->d_name);
 159                 if (stat(buf, &st)) {
 160                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 161                                 buf, strerror(errno), errno);
 162                         free(buf);
 163                         continue;
 164                 }
 165                 if (S_ISDIR(st.st_mode))
 166                         scan_path(base, buf, fn);
 167                 free(buf);
 168         }
 169         closedir(dir);
 170 }
 171
 172 #define lastc(s) s[strlen(s) - 1]
 173
 174 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 175 {
 176         char line[MAX_PATH * 2], *z;
 177         FILE *projects;
 178         int err;
 179
 180         projects = fopen(projectsfile, "r");
 181         if (!projects) {
 182                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 183                         projectsfile, strerror(errno), errno);
 184         }
 185         while (fgets(line, sizeof(line), projects) != NULL) {
 186                 for (z = &lastc(line);
 187                      strlen(line) && strchr("\n\r", *z);
 188                      z = &lastc(line))
 189                         *z = '\0';
 190                 if (strlen(line))
 191                         scan_path(path, fmt("%s/%s", path, line), fn);
 192         }
 193         if ((err = ferror(projects))) {
 194                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 195                         projectsfile, strerror(err), err);
 196         }
 197         fclose(projects);
 198 }
 199
 200 void scan_tree(const char *path, repo_config_fn fn)
 201 {
 202         scan_path(path, path, fn);
 203 }