scan-tree.c

   1 #include "cgit.h"
   2 #include "html.h"
   3
   4 #define MAX_PATH 4096
   5
   6 /* return 1 if path contains a objects/ directory and a HEAD file */
   7 static int is_git_dir(const char *path)
   8 {
   9         struct stat st;
  10         static char buf[MAX_PATH];
  11
  12         if (snprintf(buf, MAX_PATH, "%s/objects", path) >= MAX_PATH) {
  13                 fprintf(stderr, "Insanely long path: %s\n", path);
  14                 return 0;
  15         }
  16         if (stat(buf, &st)) {
  17                 if (errno != ENOENT)
  18                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
  19                                 path, strerror(errno), errno);
  20                 return 0;
  21         }
  22         if (!S_ISDIR(st.st_mode))
  23                 return 0;
  24
  25         sprintf(buf, "%s/HEAD", path);
  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_ISREG(st.st_mode))
  33                 return 0;
  34
  35         return 1;
  36 }
  37
  38 char *readfile(const char *path)
  39 {
  40         FILE *f;
  41         static char buf[MAX_PATH];
  42
  43         if (!(f = fopen(path, "r")))
  44                 return NULL;
  45         fgets(buf, MAX_PATH, f);
  46         fclose(f);
  47         return buf;
  48 }
  49
  50 static void add_repo(const char *base, const char *path)
  51 {
  52         struct cgit_repo *repo;
  53         struct stat st;
  54         struct passwd *pwd;
  55         char *p;
  56
  57         if (stat(path, &st)) {
  58                 fprintf(stderr, "Error accessing %s: %s (%d)\n",
  59                         path, strerror(errno), errno);
  60                 return;
  61         }
  62         if ((pwd = getpwuid(st.st_uid)) == NULL) {
  63                 fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
  64                         path, strerror(errno), errno);
  65                 return;
  66         }
  67         if (base == path)
  68                 p = fmt("%s", path);
  69         else
  70                 p = fmt("%s", path + strlen(base) + 1);
  71
  72         if (!strcmp(p + strlen(p) - 5, "/.git"))
  73                 p[strlen(p) - 5] = '\0';
  74
  75         repo = cgit_add_repo(xstrdup(p));
  76         repo->name = repo->url;
  77         repo->path = xstrdup(path);
  78         repo->owner = (pwd ? xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name) : "");
  79
  80         p = fmt("%s/description", path);
  81         if (!stat(p, &st))
  82                 repo->desc = xstrdup(readfile(p));
  83
  84         p = fmt("%s/README.html", path);
  85         if (!stat(p, &st))
  86                 repo->readme = "README.html";
  87 }
  88
  89 static void scan_path(const char *base, const char *path)
  90 {
  91         DIR *dir;
  92         struct dirent *ent;
  93         char *buf;
  94         struct stat st;
  95
  96         if (is_git_dir(path)) {
  97                 add_repo(base, path);
  98                 return;
  99         }
 100         dir = opendir(path);
 101         if (!dir) {
 102                 fprintf(stderr, "Error opening directory %s: %s (%d)\n",
 103                         path, strerror(errno), errno);
 104                 return;
 105         }
 106         while((ent = readdir(dir)) != NULL) {
 107                 if (ent->d_name[0] == '.') {
 108                         if (ent->d_name[1] == '\0')
 109                                 continue;
 110                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
 111                                 continue;
 112                 }
 113                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
 114                 if (!buf) {
 115                         fprintf(stderr, "Alloc error on %s: %s (%d)\n",
 116                                 path, strerror(errno), errno);
 117                         exit(1);
 118                 }
 119                 sprintf(buf, "%s/%s", path, ent->d_name);
 120                 if (stat(buf, &st)) {
 121                         fprintf(stderr, "Error checking path %s: %s (%d)\n",
 122                                 buf, strerror(errno), errno);
 123                         free(buf);
 124                         continue;
 125                 }
 126                 if (S_ISDIR(st.st_mode))
 127                         scan_path(base, buf);
 128                 free(buf);
 129         }
 130         closedir(dir);
 131 }
 132
 133 void scan_tree(const char *path)
 134 {
 135         scan_path(path, path);
 136 }