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
  51 static void repo_config(const char *name, const char *value)
  52 {
  53         config_fn(repo, name, value);
  54 }
  55
  56 static void add_repo(const char *base, const char *path, repo_config_fn fn)
  57 {
  58         struct stat st;
  59         struct passwd *pwd;
  60         char *p;
  61         size_t size;
  62
  63         if (stat(path, &st)) {
  64                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  65                         path, strerror(errno), errno);
  66                 return;
  67         }
  68         if (!stat(fmt("%s/noweb", path), &st))
  69                 return;
  70         if ((pwd = getpwuid(st.st_uid)) == NULL) {
  71                 fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
  72                         path, strerror(errno), errno);
  73                 return;
  74         }
  75         if (base == path)
  76                 p = fmt("%s", path);
  77         else
  78                 p = fmt("%s", path + strlen(base) + 1);
  79
  80         if (!strcmp(p + strlen(p) - 5, "/.git"))
  81                 p[strlen(p) - 5] = '\0';
  82
  83         repo = cgit_add_repo(xstrdup(p));
  84         if (ctx.cfg.remove_suffix)
  85                 if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
  86                         *p = '\0';
  87         repo->name = repo->url;
  88         repo->path = xstrdup(path);
  89         p = (pwd && pwd->pw_gecos) ? strchr(pwd->pw_gecos, ',') : NULL;
  90         if (p)
  91                 *p = '\0';
  92         repo->owner = (pwd ? xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name) : "");
  93
  94         p = fmt("%s/description", path);
  95         if (!stat(p, &st))
  96                 readfile(p, &repo->desc, &size);
  97
  98         p = fmt("%s/README.html", path);
  99         if (!stat(p, &st))
 100                 repo->readme = "README.html";
 101
 102         p = fmt("%s/cgitrc", path);
 103         if (!stat(p, &st)) {
 104                 config_fn = fn;
 105                 parse_configfile(xstrdup(p), &repo_config);
 106         }
 107 }
 108
 109 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 110 {
 111         DIR *dir;
 112         struct dirent *ent;
 113         char *buf;
 114         struct stat st;
 115
 116         if (is_git_dir(path)) {
 117                 add_repo(base, path, fn);
 118                 return;
 119         }
 120         if (is_git_dir(fmt("%s/.git", path))) {
 121                 add_repo(base, fmt("%s/.git", path), fn);
 122                 return;
 123         }
 124         dir = opendir(path);
 125         if (!dir) {
 126                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 127                         path, strerror(errno), errno);
 128                 return;
 129         }
 130         while((ent = readdir(dir)) != NULL) {
 131                 if (ent->d_name[0] == '.') {
 132                         if (ent->d_name[1] == '\0')
 133                                 continue;
 134                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 135                                 continue;
 136                 }
 137                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
 138                 if (!buf) {
 139                         fprintf(stderr, "Alloc error on %s: %s (%d)\n",
 140                                 path, strerror(errno), errno);
 141                         exit(1);
 142                 }
 143                 sprintf(buf, "%s/%s", path, ent->d_name);
 144                 if (stat(buf, &st)) {
 145                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 146                                 buf, strerror(errno), errno);
 147                         free(buf);
 148                         continue;
 149                 }
 150                 if (S_ISDIR(st.st_mode))
 151                         scan_path(base, buf, fn);
 152                 free(buf);
 153         }
 154         closedir(dir);
 155 }
 156
 157 #define lastc(s) s[strlen(s) - 1]
 158
 159 void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
 160 {
 161         char line[MAX_PATH * 2], *z;
 162         FILE *projects;
 163         int err;
 164
 165         projects = fopen(projectsfile, "r");
 166         if (!projects) {
 167                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
 168                         projectsfile, strerror(errno), errno);
 169         }
 170         while (fgets(line, sizeof(line), projects) != NULL) {
 171                 for (z = &lastc(line);
 172                      strlen(line) && strchr("\n\r", *z);
 173                      z = &lastc(line))
 174                         *z = '\0';
 175                 if (strlen(line))
 176                         scan_path(path, fmt("%s/%s", path, line), fn);
 177         }
 178         if ((err = ferror(projects))) {
 179                 fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
 180                         projectsfile, strerror(err), err);
 181         }
 182         fclose(projects);
 183 }
 184
 185 void scan_tree(const char *path, repo_config_fn fn)
 186 {
 187         scan_path(path, path, fn);
 188 }