stagit-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 "compat.h"
  16 #include "config.h"
  17
  18 static git_repository *repo;
  19
  20 static const char *relpath = "";
  21 static const char *repodir;
  22
  23 static char description[255] = "Repositories";
  24 static char name[255];
  25 static char owner[255];
  26
  27 FILE *
  28 efopen(const char *name, const char *flags)
  29 {
  30         FILE *fp;
  31
  32         if (!(fp = fopen(name, flags)))
  33                 err(1, "fopen");
  34
  35         return fp;
  36 }
  37
  38 /* Escape characters below as HTML 2.0 / XML 1.0. */
  39 void
  40 xmlencode(FILE *fp, const char *s, size_t len)
  41 {
  42         size_t i;
  43
  44         for (i = 0; *s && i < len; s++, i++) {
  45                 switch(*s) {
  46                 case '<':  fputs("&lt;",   fp); break;
  47                 case '>':  fputs("&gt;",   fp); break;
  48                 case '\'': fputs("&apos;", fp); break;
  49                 case '&':  fputs("&amp;",  fp); break;
  50                 case '"':  fputs("&quot;", fp); break;
  51                 default:   fputc(*s, fp);
  52                 }
  53         }
  54 }
  55
  56 /* Some implementations of basename(3) return a pointer to a static
  57  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
  58  * This is a wrapper function that is compatible with both versions.
  59  * The program will error out if basename(3) failed, this can only happen
  60  * with the OpenBSD version. */
  61 char *
  62 xbasename(const char *path)
  63 {
  64         char *p, *b;
  65
  66         if (!(p = strdup(path)))
  67                 err(1, "strdup");
  68         if (!(b = basename(p)))
  69                 err(1, "basename");
  70         if (!(b = strdup(b)))
  71                 err(1, "strdup");
  72         free(p);
  73
  74         return b;
  75 }
  76
  77 void
  78 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
  79 {
  80         struct tm *intm;
  81         time_t t;
  82         char out[32];
  83
  84         t = (time_t) intime->time + (intime->offset * 60);
  85         intm = gmtime(&t);
  86         strftime(out, sizeof(out), fmt, intm);
  87         fputs(out, fp);
  88 }
  89
  90 void
  91 printtimeshort(FILE *fp, const git_time *intime)
  92 {
  93         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
  94 }
  95
  96 int
  97 writeheader(FILE *fp)
  98 {
  99         fputs("<!DOCTYPE HTML>"
 100                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 101                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 102                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
 103         xmlencode(fp, description, strlen(description));
 104         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 105         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 106         fputs("</head>\n<body>\n", fp);
 107         fprintf(fp, "<table>\n<tr><td><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></td>\n"
 108                 "<td><h1>%s</h1><span class=\"desc\">%s</span></td></tr><tr><td></td><td>\n",
 109                 relpath, name, description);
 110         fputs("</td></tr>\n</table>\n<hr/>\n<div id=\"content\">\n"
 111               "<table id=\"index\"><thead>\n"
 112               "<tr><td>Name</td><td>Description</td><td>Owner</td><td>Last commit</td></tr>"
 113               "</thead><tbody>\n", fp);
 114
 115         return 0;
 116 }
 117
 118 int
 119 writefooter(FILE *fp)
 120 {
 121         return !fputs("</tbody>\n</table>\n</div>\n</body>\n</html>\n", fp);
 122 }
 123
 124 int
 125 writelog(FILE *fp)
 126 {
 127         char *stripped_name = NULL, *p;
 128         git_commit *commit = NULL;
 129         const git_signature *author;
 130         git_revwalk *w = NULL;
 131         git_oid id;
 132         int ret = 0;
 133
 134         git_revwalk_new(&w, repo);
 135         git_revwalk_push_head(w);
 136         git_revwalk_sorting(w, GIT_SORT_TIME);
 137         git_revwalk_simplify_first_parent(w);
 138
 139         if (git_revwalk_next(&id, w) ||
 140             git_commit_lookup(&commit, repo, &id)) {
 141                 ret = -1;
 142                 goto err;
 143         }
 144
 145         author = git_commit_author(commit);
 146
 147         /* strip .git suffix */
 148         if (!(stripped_name = strdup(name)))
 149                 err(1, "strdup");
 150         if ((p = strrchr(stripped_name, '.')))
 151                 if (!strcmp(p, ".git"))
 152                         *p = '\0';
 153
 154         fputs("<tr><td><a href=\"", fp);
 155         xmlencode(fp, stripped_name, strlen(stripped_name));
 156         fputs("/log.html\">", fp);
 157         xmlencode(fp, stripped_name, strlen(stripped_name));
 158         fputs("</a></td><td>", fp);
 159         xmlencode(fp, description, strlen(description));
 160         fputs("</td><td>", fp);
 161         xmlencode(fp, owner, strlen(owner));
 162         fputs("</td><td>", fp);
 163         if (author)
 164                 printtimeshort(fp, &(author->when));
 165         fputs("</td></tr>", fp);
 166
 167         git_commit_free(commit);
 168 err:
 169         git_revwalk_free(w);
 170         free(stripped_name);
 171
 172         return ret;
 173 }
 174
 175 int
 176 main(int argc, char *argv[])
 177 {
 178         const git_error *e = NULL;
 179         FILE *fp;
 180         char path[PATH_MAX], *p;
 181         int i, r, ret = 0;
 182
 183         if (argc < 2) {
 184                 fprintf(stderr, "%s [repodir...]\n", argv[0]);
 185                 return 1;
 186         }
 187         git_libgit2_init();
 188
 189         writeheader(stdout);
 190
 191         for (i = 1; i < argc; i++) {
 192                 repodir = argv[i];
 193
 194                 if (git_repository_open_ext(&repo, repodir,
 195                     GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) {
 196                         e = giterr_last();
 197                         fprintf(stderr, "%s: %s\n", argv[0], e->message);
 198                         ret = 1;
 199                         continue;
 200                 }
 201
 202                 /* use directory name as name, truncation of name is no problem. */
 203                 p = xbasename(repodir);
 204                 snprintf(name, sizeof(name), "%s", p);
 205                 free(p);
 206
 207                 /* read description or .git/description */
 208                 description[0] = '\0';
 209                 r = snprintf(path, sizeof(path), "%s%s%s",
 210                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 211                 if (r == -1 || (size_t)r >= sizeof(path))
 212                         errx(1, "path truncated: '%s%s%s'",
 213                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 214                 if (!(fp = fopen(path, "r"))) {
 215                         r = snprintf(path, sizeof(path), "%s%s%s",
 216                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 217                         if (r == -1 || (size_t)r >= sizeof(path))
 218                                 errx(1, "path truncated: '%s%s%s'",
 219                                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 220                         fp = fopen(path, "r");
 221                 }
 222                 if (fp) {
 223                         if (!fgets(description, sizeof(description), fp))
 224                                 description[0] = '\0';
 225                         fclose(fp);
 226                 }
 227
 228                 /* read owner or .git/owner */
 229                 owner[0] = '\0';
 230                 r = snprintf(path, sizeof(path), "%s%s%s",
 231                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "owner");
 232                 if (r == -1 || (size_t)r >= sizeof(path))
 233                         errx(1, "path truncated: '%s%s%s'",
 234                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "owner");
 235                 if (!(fp = fopen(path, "r"))) {
 236                         r = snprintf(path, sizeof(path), "%s%s%s",
 237                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/owner");
 238                         if (r == -1 || (size_t)r >= sizeof(path))
 239                                 errx(1, "path truncated: '%s%s%s'",
 240                                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/owner");
 241                         fp = fopen(path, "r");
 242                 }
 243                 if (fp) {
 244                         if (!fgets(owner, sizeof(owner), fp))
 245                                 owner[0] = '\0';
 246                         owner[strcspn(owner, "\n")] = '\0';
 247                         fclose(fp);
 248                 }
 249                 writelog(stdout);
 250         }
 251         writefooter(stdout);
 252
 253         /* cleanup */
 254         git_repository_free(repo);
 255         git_libgit2_shutdown();
 256
 257         return ret;
 258 }