urmoms-index.c

   1 #include <sys/stat.h>
   2
   3 #include <err.h>
   4 #include <errno.h>
   5 #include <inttypes.h>
   6 #include <libgen.h>
   7 #include <limits.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 #include <git2.h>
  14
  15 #include "config.h"
  16
  17 static git_repository *repo;
  18
  19 static const char *relpath = "";
  20 static const char *repodir;
  21
  22 static char description[255] = "Repositories";
  23 static char name[255];
  24 static char owner[255];
  25
  26 FILE *
  27 efopen(const char *name, const char *flags)
  28 {
  29         FILE *fp;
  30
  31         if (!(fp = fopen(name, flags)))
  32                 err(1, "fopen");
  33
  34         return fp;
  35 }
  36
  37 /* Escape characters below as HTML 2.0 / XML 1.0. */
  38 void
  39 xmlencode(FILE *fp, const char *s, size_t len)
  40 {
  41         size_t i;
  42
  43         for (i = 0; *s && i < len; s++, i++) {
  44                 switch(*s) {
  45                 case '<':  fputs("&lt;",   fp); break;
  46                 case '>':  fputs("&gt;",   fp); break;
  47                 case '\'': fputs("&apos;", fp); break;
  48                 case '&':  fputs("&amp;",  fp); break;
  49                 case '"':  fputs("&quot;", fp); break;
  50                 default:   fputc(*s, fp);
  51                 }
  52         }
  53 }
  54
  55 /* Some implementations of basename(3) return a pointer to a static
  56  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
  57  * This is a wrapper function that is compatible with both versions.
  58  * The program will error out if basename(3) failed, this can only happen
  59  * with the OpenBSD version. */
  60 char *
  61 xbasename(const char *path)
  62 {
  63         char *p, *b;
  64
  65         if (!(p = strdup(path)))
  66                 err(1, "strdup");
  67         if (!(b = basename(p)))
  68                 err(1, "basename");
  69         if (!(b = strdup(b)))
  70                 err(1, "strdup");
  71         free(p);
  72
  73         return b;
  74 }
  75
  76 void
  77 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
  78 {
  79         struct tm *intm;
  80         time_t t;
  81         char out[32];
  82
  83         t = (time_t) intime->time + (intime->offset * 60);
  84         intm = gmtime(&t);
  85         strftime(out, sizeof(out), fmt, intm);
  86         fputs(out, fp);
  87 }
  88
  89 void
  90 printtimeshort(FILE *fp, const git_time *intime)
  91 {
  92         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
  93 }
  94
  95 int
  96 writeheader(FILE *fp)
  97 {
  98         fputs("<!DOCTYPE HTML>"
  99                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 100                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 101                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
 102         xmlencode(fp, description, strlen(description));
 103         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 104         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 105         fputs("</head>\n<body>\n", fp);
 106         fprintf(fp, "<table>\n<tr><td><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></td>\n"
 107                 "<td><h1>%s</h1><span class=\"desc\">%s</span></td></tr><tr><td></td><td>\n",
 108                 relpath, name, description);
 109         fputs("</td></tr>\n</table>\n<hr/><div id=\"content\">\n"
 110               "<table><thead>\n"
 111               "<tr><td>Name</td><td>Description</td><td>Owner</td><td>Last commit</td></tr>"
 112               "</thead><tbody>\n", fp);
 113
 114         return 0;
 115 }
 116
 117 int
 118 writefooter(FILE *fp)
 119 {
 120         return !fputs("</tbody></table></div></body>\n</html>", fp);
 121 }
 122
 123 int
 124 writelog(FILE *fp)
 125 {
 126         git_commit *commit = NULL;
 127         const git_signature *author;
 128         git_revwalk *w = NULL;
 129         git_oid id;
 130         int ret = 0;
 131
 132         git_revwalk_new(&w, repo);
 133         git_revwalk_push_head(w);
 134         git_revwalk_sorting(w, GIT_SORT_TIME);
 135         git_revwalk_simplify_first_parent(w);
 136
 137         if (git_revwalk_next(&id, w) ||
 138             git_commit_lookup(&commit, repo, &id)) {
 139                 ret = -1;
 140                 goto err;
 141         }
 142
 143         author = git_commit_author(commit);
 144
 145         fputs("<tr><td><a href=\"", fp);
 146         xmlencode(fp, name, strlen(name));
 147         fputs("/log.html\">", fp);
 148         xmlencode(fp, name, strlen(name));
 149         fputs("</a></td><td>", fp);
 150         xmlencode(fp, description, strlen(description));
 151         fputs("</td><td>", fp);
 152         xmlencode(fp, owner, strlen(owner));
 153         fputs("</td><td>", fp);
 154         if (author)
 155                 printtimeshort(fp, &(author->when));
 156         fputs("</td></tr>", fp);
 157
 158         git_commit_free(commit);
 159 err:
 160         git_revwalk_free(w);
 161
 162         return ret;
 163 }
 164
 165 int
 166 main(int argc, char *argv[])
 167 {
 168         const git_error *e = NULL;
 169         FILE *fp;
 170         char path[PATH_MAX], *p;
 171         int i, status;
 172
 173         if (argc < 2) {
 174                 fprintf(stderr, "%s [repodir...]\n", argv[0]);
 175                 return 1;
 176         }
 177         git_libgit2_init();
 178
 179         writeheader(stdout);
 180
 181         for (i = 1; i < argc; i++) {
 182                 repodir = argv[i];
 183
 184                 if ((status = git_repository_open_ext(&repo, repodir,
 185                         GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 186                         e = giterr_last();
 187                         fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 188                         return status;
 189                 }
 190
 191                 /* use directory name as name */
 192                 p = xbasename(repodir);
 193                 snprintf(name, sizeof(name), "%s", p);
 194                 free(p);
 195
 196                 /* read description or .git/description */
 197                 description[0] = '\0';
 198                 snprintf(path, sizeof(path), "%s%s%s",
 199                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 200                 if (!(fp = fopen(path, "r"))) {
 201                         snprintf(path, sizeof(path), "%s%s%s",
 202                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 203                         fp = fopen(path, "r");
 204                 }
 205                 if (fp) {
 206                         if (!fgets(description, sizeof(description), fp))
 207                                 description[0] = '\0';
 208                         fclose(fp);
 209                 }
 210
 211                 /* read owner or .git/owner */
 212                 owner[0] = '\0';
 213                 snprintf(path, sizeof(path), "%s%s%s",
 214                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "owner");
 215                 if (!(fp = fopen(path, "r"))) {
 216                         snprintf(path, sizeof(path), "%s%s%s",
 217                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/owner");
 218                         fp = fopen(path, "r");
 219                 }
 220                 if (fp) {
 221                         if (!fgets(owner, sizeof(owner), fp))
 222                                 owner[0] = '\0';
 223                         fclose(fp);
 224                 }
 225                 writelog(stdout);
 226         }
 227         writefooter(stdout);
 228
 229         /* cleanup */
 230         git_repository_free(repo);
 231         git_libgit2_shutdown();
 232
 233         return 0;
 234 }