stagit.c

   1 #include <sys/stat.h>
   2 #include <sys/types.h>
   3
   4 #include <err.h>
   5 #include <errno.h>
   6 #include <inttypes.h>
   7 #include <libgen.h>
   8 #include <limits.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <unistd.h>
  13
  14 #include <git2.h>
  15
  16 #include "compat.h"
  17
  18 struct deltainfo {
  19         git_patch *patch;
  20
  21         size_t addcount;
  22         size_t delcount;
  23 };
  24
  25 struct commitinfo {
  26         const git_oid *id;
  27
  28         char oid[GIT_OID_HEXSZ + 1];
  29         char parentoid[GIT_OID_HEXSZ + 1];
  30
  31         const git_signature *author;
  32         const git_signature *committer;
  33         const char          *summary;
  34         const char          *msg;
  35
  36         git_diff   *diff;
  37         git_commit *commit;
  38         git_commit *parent;
  39         git_tree   *commit_tree;
  40         git_tree   *parent_tree;
  41
  42         size_t addcount;
  43         size_t delcount;
  44         size_t filecount;
  45
  46         struct deltainfo **deltas;
  47         size_t ndeltas;
  48 };
  49
  50 static git_repository *repo;
  51
  52 static const char *relpath = "";
  53 static const char *repodir;
  54
  55 static char *name = "";
  56 static char *strippedname = "";
  57 static char description[255];
  58 static char cloneurl[1024];
  59 static char *submodules;
  60 static char *licensefiles[] = { "HEAD:LICENSE", "HEAD:LICENSE.md", "HEAD:COPYING" };
  61 static char *license;
  62 static char *readmefiles[] = { "HEAD:README", "HEAD:README.md" };
  63 static char *readme;
  64 static long long nlogcommits = -1; /* < 0 indicates not used */
  65
  66 /* cache */
  67 static git_oid lastoid;
  68 static char lastoidstr[GIT_OID_HEXSZ + 2]; /* id + newline + NUL byte */
  69 static FILE *rcachefp, *wcachefp;
  70 static const char *cachefile;
  71
  72 void
  73 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
  74 {
  75         int r;
  76
  77         r = snprintf(buf, bufsiz, "%s%s%s",
  78                 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  79         if (r < 0 || (size_t)r >= bufsiz)
  80                 errx(1, "path truncated: '%s%s%s'",
  81                         path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  82 }
  83
  84 void
  85 deltainfo_free(struct deltainfo *di)
  86 {
  87         if (!di)
  88                 return;
  89         git_patch_free(di->patch);
  90         memset(di, 0, sizeof(*di));
  91         free(di);
  92 }
  93
  94 int
  95 commitinfo_getstats(struct commitinfo *ci)
  96 {
  97         struct deltainfo *di;
  98         git_diff_options opts;
  99         git_diff_find_options fopts;
 100         const git_diff_delta *delta;
 101         const git_diff_hunk *hunk;
 102         const git_diff_line *line;
 103         git_patch *patch = NULL;
 104         size_t ndeltas, nhunks, nhunklines;
 105         size_t i, j, k;
 106
 107         if (git_tree_lookup(&(ci->commit_tree), repo, git_commit_tree_id(ci->commit)))
 108                 goto err;
 109         if (!git_commit_parent(&(ci->parent), ci->commit, 0)) {
 110                 if (git_tree_lookup(&(ci->parent_tree), repo, git_commit_tree_id(ci->parent))) {
 111                         ci->parent = NULL;
 112                         ci->parent_tree = NULL;
 113                 }
 114         }
 115
 116         git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
 117         opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH |
 118                       GIT_DIFF_IGNORE_SUBMODULES |
 119                       GIT_DIFF_INCLUDE_TYPECHANGE;
 120         if (git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts))
 121                 goto err;
 122
 123         if (git_diff_find_init_options(&fopts, GIT_DIFF_FIND_OPTIONS_VERSION))
 124                 goto err;
 125         /* find renames and copies, exact matches (no heuristic) for renames. */
 126         fopts.flags |= GIT_DIFF_FIND_RENAMES | GIT_DIFF_FIND_COPIES |
 127                        GIT_DIFF_FIND_EXACT_MATCH_ONLY;
 128         if (git_diff_find_similar(ci->diff, &fopts))
 129                 goto err;
 130
 131         ndeltas = git_diff_num_deltas(ci->diff);
 132         if (ndeltas && !(ci->deltas = calloc(ndeltas, sizeof(struct deltainfo *))))
 133                 err(1, "calloc");
 134
 135         for (i = 0; i < ndeltas; i++) {
 136                 if (git_patch_from_diff(&patch, ci->diff, i))
 137                         goto err;
 138
 139                 if (!(di = calloc(1, sizeof(struct deltainfo))))
 140                         err(1, "calloc");
 141                 di->patch = patch;
 142                 ci->deltas[i] = di;
 143
 144                 delta = git_patch_get_delta(patch);
 145
 146                 /* skip stats for binary data */
 147                 if (delta->flags & GIT_DIFF_FLAG_BINARY)
 148                         continue;
 149
 150                 nhunks = git_patch_num_hunks(patch);
 151                 for (j = 0; j < nhunks; j++) {
 152                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 153                                 break;
 154                         for (k = 0; ; k++) {
 155                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 156                                         break;
 157                                 if (line->old_lineno == -1) {
 158                                         di->addcount++;
 159                                         ci->addcount++;
 160                                 } else if (line->new_lineno == -1) {
 161                                         di->delcount++;
 162                                         ci->delcount++;
 163                                 }
 164                         }
 165                 }
 166         }
 167         ci->ndeltas = i;
 168         ci->filecount = i;
 169
 170         return 0;
 171
 172 err:
 173         git_diff_free(ci->diff);
 174         ci->diff = NULL;
 175         git_tree_free(ci->commit_tree);
 176         ci->commit_tree = NULL;
 177         git_tree_free(ci->parent_tree);
 178         ci->parent_tree = NULL;
 179         git_commit_free(ci->parent);
 180         ci->parent = NULL;
 181
 182         if (ci->deltas)
 183                 for (i = 0; i < ci->ndeltas; i++)
 184                         deltainfo_free(ci->deltas[i]);
 185         free(ci->deltas);
 186         ci->deltas = NULL;
 187         ci->ndeltas = 0;
 188         ci->addcount = 0;
 189         ci->delcount = 0;
 190         ci->filecount = 0;
 191
 192         return -1;
 193 }
 194
 195 void
 196 commitinfo_free(struct commitinfo *ci)
 197 {
 198         size_t i;
 199
 200         if (!ci)
 201                 return;
 202         if (ci->deltas)
 203                 for (i = 0; i < ci->ndeltas; i++)
 204                         deltainfo_free(ci->deltas[i]);
 205
 206         free(ci->deltas);
 207         git_diff_free(ci->diff);
 208         git_tree_free(ci->commit_tree);
 209         git_tree_free(ci->parent_tree);
 210         git_commit_free(ci->commit);
 211         git_commit_free(ci->parent);
 212         memset(ci, 0, sizeof(*ci));
 213         free(ci);
 214 }
 215
 216 struct commitinfo *
 217 commitinfo_getbyoid(const git_oid *id)
 218 {
 219         struct commitinfo *ci;
 220
 221         if (!(ci = calloc(1, sizeof(struct commitinfo))))
 222                 err(1, "calloc");
 223
 224         if (git_commit_lookup(&(ci->commit), repo, id))
 225                 goto err;
 226         ci->id = id;
 227
 228         git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
 229         git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
 230
 231         ci->author = git_commit_author(ci->commit);
 232         ci->committer = git_commit_committer(ci->commit);
 233         ci->summary = git_commit_summary(ci->commit);
 234         ci->msg = git_commit_message(ci->commit);
 235
 236         return ci;
 237
 238 err:
 239         commitinfo_free(ci);
 240
 241         return NULL;
 242 }
 243
 244 FILE *
 245 efopen(const char *name, const char *flags)
 246 {
 247         FILE *fp;
 248
 249         if (!(fp = fopen(name, flags)))
 250                 err(1, "fopen: '%s'", name);
 251
 252         return fp;
 253 }
 254
 255 /* Escape characters below as HTML 2.0 / XML 1.0. */
 256 void
 257 xmlencode(FILE *fp, const char *s, size_t len)
 258 {
 259         size_t i;
 260
 261         for (i = 0; *s && i < len; s++, i++) {
 262                 switch(*s) {
 263                 case '<':  fputs("&lt;",   fp); break;
 264                 case '>':  fputs("&gt;",   fp); break;
 265                 case '\'': fputs("&#39;",  fp); break;
 266                 case '&':  fputs("&amp;",  fp); break;
 267                 case '"':  fputs("&quot;", fp); break;
 268                 default:   fputc(*s, fp);
 269                 }
 270         }
 271 }
 272
 273 int
 274 mkdirp(const char *path)
 275 {
 276         char tmp[PATH_MAX], *p;
 277
 278         if (strlcpy(tmp, path, sizeof(tmp)) >= sizeof(tmp))
 279                 errx(1, "path truncated: '%s'", path);
 280         for (p = tmp + (tmp[0] == '/'); *p; p++) {
 281                 if (*p != '/')
 282                         continue;
 283                 *p = '\0';
 284                 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 285                         return -1;
 286                 *p = '/';
 287         }
 288         if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 289                 return -1;
 290         return 0;
 291 }
 292
 293 void
 294 printtimez(FILE *fp, const git_time *intime)
 295 {
 296         struct tm *intm;
 297         time_t t;
 298         char out[32];
 299
 300         t = (time_t)intime->time;
 301         if (!(intm = gmtime(&t)))
 302                 return;
 303         strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
 304         fputs(out, fp);
 305 }
 306
 307 void
 308 printtime(FILE *fp, const git_time *intime)
 309 {
 310         struct tm *intm;
 311         time_t t;
 312         char out[32];
 313
 314         t = (time_t)intime->time + (intime->offset * 60);
 315         if (!(intm = gmtime(&t)))
 316                 return;
 317         strftime(out, sizeof(out), "%a, %e %b %Y %H:%M:%S", intm);
 318         if (intime->offset < 0)
 319                 fprintf(fp, "%s -%02d%02d", out,
 320                             -(intime->offset) / 60, -(intime->offset) % 60);
 321         else
 322                 fprintf(fp, "%s +%02d%02d", out,
 323                             intime->offset / 60, intime->offset % 60);
 324 }
 325
 326 void
 327 printtimeshort(FILE *fp, const git_time *intime)
 328 {
 329         struct tm *intm;
 330         time_t t;
 331         char out[32];
 332
 333         t = (time_t)intime->time;
 334         if (!(intm = gmtime(&t)))
 335                 return;
 336         strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
 337         fputs(out, fp);
 338 }
 339
 340 void
 341 writeheader(FILE *fp, const char *title)
 342 {
 343         fputs("<!DOCTYPE html>\n"
 344                 "<html>\n<head>\n"
 345                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 346                 "<title>", fp);
 347         xmlencode(fp, title, strlen(title));
 348         if (title[0] && strippedname[0])
 349                 fputs(" - ", fp);
 350         xmlencode(fp, strippedname, strlen(strippedname));
 351         if (description[0])
 352                 fputs(" - ", fp);
 353         xmlencode(fp, description, strlen(description));
 354         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 355         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 356                 name, relpath);
 357         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 358         fputs("</head>\n<body>\n<table><tr><td>", fp);
 359         fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
 360                 relpath, relpath);
 361         fputs("</td><td><h1>", fp);
 362         xmlencode(fp, strippedname, strlen(strippedname));
 363         fputs("</h1><span class=\"desc\">", fp);
 364         xmlencode(fp, description, strlen(description));
 365         fputs("</span></td></tr>", fp);
 366         if (cloneurl[0]) {
 367                 fputs("<tr class=\"url\"><td></td><td>git clone <a href=\"", fp);
 368                 xmlencode(fp, cloneurl, strlen(cloneurl));
 369                 fputs("\">", fp);
 370                 xmlencode(fp, cloneurl, strlen(cloneurl));
 371                 fputs("</a></td></tr>", fp);
 372         }
 373         fputs("<tr><td></td><td>\n", fp);
 374         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 375         fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
 376         fprintf(fp, "<a href=\"%srefs.html\">Refs</a>", relpath);
 377         if (submodules)
 378                 fprintf(fp, " | <a href=\"%sfile/%s.html\">Submodules</a>",
 379                         relpath, submodules);
 380         if (readme)
 381                 fprintf(fp, " | <a href=\"%sfile/%s.html\">README</a>",
 382                         relpath, readme);
 383         if (license)
 384                 fprintf(fp, " | <a href=\"%sfile/%s.html\">LICENSE</a>",
 385                         relpath, license);
 386         fputs("</td></tr></table>\n<hr/>\n<div id=\"content\">\n", fp);
 387 }
 388
 389 void
 390 writefooter(FILE *fp)
 391 {
 392         fputs("</div>\n</body>\n</html>\n", fp);
 393 }
 394
 395 int
 396 writeblobhtml(FILE *fp, const git_blob *blob)
 397 {
 398         size_t n = 0, i, prev;
 399         const char *nfmt = "<a href=\"#l%d\" class=\"line\" id=\"l%d\">%7d</a> ";
 400         const char *s = git_blob_rawcontent(blob);
 401         git_off_t len = git_blob_rawsize(blob);
 402
 403         fputs("<pre id=\"blob\">\n", fp);
 404
 405         if (len > 0) {
 406                 for (i = 0, prev = 0; i < (size_t)len; i++) {
 407                         if (s[i] != '\n')
 408                                 continue;
 409                         n++;
 410                         fprintf(fp, nfmt, n, n, n);
 411                         xmlencode(fp, &s[prev], i - prev + 1);
 412                         prev = i + 1;
 413                 }
 414                 /* trailing data */
 415                 if ((len - prev) > 0) {
 416                         n++;
 417                         fprintf(fp, nfmt, n, n, n);
 418                         xmlencode(fp, &s[prev], len - prev);
 419                 }
 420         }
 421
 422         fputs("</pre>\n", fp);
 423
 424         return n;
 425 }
 426
 427 void
 428 printcommit(FILE *fp, struct commitinfo *ci)
 429 {
 430         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 431                 relpath, ci->oid, ci->oid);
 432
 433         if (ci->parentoid[0])
 434                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 435                         relpath, ci->parentoid, ci->parentoid);
 436
 437         if (ci->author) {
 438                 fputs("<b>Author:</b> ", fp);
 439                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 440                 fputs(" &lt;<a href=\"mailto:", fp);
 441                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 442                 fputs("\">", fp);
 443                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 444                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 445                 printtime(fp, &(ci->author->when));
 446                 fputc('\n', fp);
 447         }
 448         if (ci->msg) {
 449                 fputc('\n', fp);
 450                 xmlencode(fp, ci->msg, strlen(ci->msg));
 451                 fputc('\n', fp);
 452         }
 453 }
 454
 455 void
 456 printshowfile(FILE *fp, struct commitinfo *ci)
 457 {
 458         const git_diff_delta *delta;
 459         const git_diff_hunk *hunk;
 460         const git_diff_line *line;
 461         git_patch *patch;
 462         size_t nhunks, nhunklines, changed, add, del, total, i, j, k;
 463         char linestr[80];
 464         int c;
 465
 466         printcommit(fp, ci);
 467
 468         if (!ci->deltas)
 469                 return;
 470
 471         if (ci->filecount > 1000   ||
 472             ci->ndeltas   > 1000   ||
 473             ci->addcount  > 100000 ||
 474             ci->delcount  > 100000) {
 475                 fputs("Diff is too large, output suppressed.\n", fp);
 476                 return;
 477         }
 478
 479         /* diff stat */
 480         fputs("<b>Diffstat:</b>\n<table>", fp);
 481         for (i = 0; i < ci->ndeltas; i++) {
 482                 delta = git_patch_get_delta(ci->deltas[i]->patch);
 483
 484                 switch (delta->status) {
 485                 case GIT_DELTA_ADDED:      c = 'A'; break;
 486                 case GIT_DELTA_COPIED:     c = 'C'; break;
 487                 case GIT_DELTA_DELETED:    c = 'D'; break;
 488                 case GIT_DELTA_MODIFIED:   c = 'M'; break;
 489                 case GIT_DELTA_RENAMED:    c = 'R'; break;
 490                 case GIT_DELTA_TYPECHANGE: c = 'T'; break;
 491                 default:                   c = ' '; break;
 492                 }
 493                 if (c == ' ')
 494                         fprintf(fp, "<tr><td>%c", c);
 495                 else
 496                         fprintf(fp, "<tr><td class=\"%c\">%c", c, c);
 497
 498                 fprintf(fp, "</td><td><a href=\"#h%zu\">", i);
 499                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 500                 if (strcmp(delta->old_file.path, delta->new_file.path)) {
 501                         fputs(" -&gt; ", fp);
 502                         xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 503                 }
 504
 505                 add = ci->deltas[i]->addcount;
 506                 del = ci->deltas[i]->delcount;
 507                 changed = add + del;
 508                 total = sizeof(linestr) - 2;
 509                 if (changed > total) {
 510                         if (add)
 511                                 add = ((float)total / changed * add) + 1;
 512                         if (del)
 513                                 del = ((float)total / changed * del) + 1;
 514                 }
 515                 memset(&linestr, '+', add);
 516                 memset(&linestr[add], '-', del);
 517
 518                 fprintf(fp, "</a></td><td> | </td><td class=\"num\">%zu</td><td><span class=\"i\">",
 519                         ci->deltas[i]->addcount + ci->deltas[i]->delcount);
 520                 fwrite(&linestr, 1, add, fp);
 521                 fputs("</span><span class=\"d\">", fp);
 522                 fwrite(&linestr[add], 1, del, fp);
 523                 fputs("</span></td></tr>\n", fp);
 524         }
 525         fprintf(fp, "</table></pre><pre>%zu file%s changed, %zu insertion%s(+), %zu deletion%s(-)\n",
 526                 ci->filecount, ci->filecount == 1 ? "" : "s",
 527                 ci->addcount,  ci->addcount  == 1 ? "" : "s",
 528                 ci->delcount,  ci->delcount  == 1 ? "" : "s");
 529
 530         fputs("<hr/>", fp);
 531
 532         for (i = 0; i < ci->ndeltas; i++) {
 533                 patch = ci->deltas[i]->patch;
 534                 delta = git_patch_get_delta(patch);
 535                 fprintf(fp, "<b>diff --git a/<a id=\"h%zu\" href=\"%sfile/", i, relpath);
 536                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 537                 fputs(".html\">", fp);
 538                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 539                 fprintf(fp, "</a> b/<a href=\"%sfile/", relpath);
 540                 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 541                 fprintf(fp, ".html\">");
 542                 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 543                 fprintf(fp, "</a></b>\n");
 544
 545                 /* check binary data */
 546                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 547                         fputs("Binary files differ.\n", fp);
 548                         continue;
 549                 }
 550
 551                 nhunks = git_patch_num_hunks(patch);
 552                 for (j = 0; j < nhunks; j++) {
 553                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 554                                 break;
 555
 556                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"h\">", i, j, i, j);
 557                         xmlencode(fp, hunk->header, hunk->header_len);
 558                         fputs("</a>", fp);
 559
 560                         for (k = 0; ; k++) {
 561                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 562                                         break;
 563                                 if (line->old_lineno == -1)
 564                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"i\">+",
 565                                                 i, j, k, i, j, k);
 566                                 else if (line->new_lineno == -1)
 567                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"d\">-",
 568                                                 i, j, k, i, j, k);
 569                                 else
 570                                         fputc(' ', fp);
 571                                 xmlencode(fp, line->content, line->content_len);
 572                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 573                                         fputs("</a>", fp);
 574                         }
 575                 }
 576         }
 577 }
 578
 579 void
 580 writelogline(FILE *fp, struct commitinfo *ci)
 581 {
 582         fputs("<tr><td>", fp);
 583         if (ci->author)
 584                 printtimeshort(fp, &(ci->author->when));
 585         fputs("</td><td>", fp);
 586         if (ci->summary) {
 587                 fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 588                 xmlencode(fp, ci->summary, strlen(ci->summary));
 589                 fputs("</a>", fp);
 590         }
 591         fputs("</td><td>", fp);
 592         if (ci->author)
 593                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 594         fputs("</td><td class=\"num\" align=\"right\">", fp);
 595         fprintf(fp, "%zu", ci->filecount);
 596         fputs("</td><td class=\"num\" align=\"right\">", fp);
 597         fprintf(fp, "+%zu", ci->addcount);
 598         fputs("</td><td class=\"num\" align=\"right\">", fp);
 599         fprintf(fp, "-%zu", ci->delcount);
 600         fputs("</td></tr>\n", fp);
 601 }
 602
 603 int
 604 writelog(FILE *fp, const git_oid *oid)
 605 {
 606         struct commitinfo *ci;
 607         git_revwalk *w = NULL;
 608         git_oid id;
 609         char path[PATH_MAX], oidstr[GIT_OID_HEXSZ + 1];
 610         FILE *fpfile;
 611         int r;
 612
 613         git_revwalk_new(&w, repo);
 614         git_revwalk_push(w, oid);
 615         git_revwalk_simplify_first_parent(w);
 616
 617         while (!git_revwalk_next(&id, w)) {
 618                 relpath = "";
 619
 620                 if (cachefile && !memcmp(&id, &lastoid, sizeof(id)))
 621                         break;
 622
 623                 git_oid_tostr(oidstr, sizeof(oidstr), &id);
 624                 r = snprintf(path, sizeof(path), "commit/%s.html", oidstr);
 625                 if (r < 0 || (size_t)r >= sizeof(path))
 626                         errx(1, "path truncated: 'commit/%s.html'", oidstr);
 627                 r = access(path, F_OK);
 628
 629                 /* optimization: if there are no log lines to write and
 630                    the commit file already exists: skip the diffstat */
 631                 if (!nlogcommits && !r)
 632                         continue;
 633
 634                 if (!(ci = commitinfo_getbyoid(&id)))
 635                         break;
 636                 /* diffstat: for stagit HTML required for the log.html line */
 637                 if (commitinfo_getstats(ci) == -1)
 638                         goto err;
 639
 640                 if (nlogcommits < 0) {
 641                         writelogline(fp, ci);
 642                 } else if (nlogcommits > 0) {
 643                         writelogline(fp, ci);
 644                         nlogcommits--;
 645                         if (!nlogcommits && ci->parentoid[0])
 646                                 fputs("<tr><td></td><td colspan=\"5\">"
 647                                       "More commits remaining [...]</td>"
 648                                       "</tr>\n", fp);
 649                 }
 650
 651                 if (cachefile)
 652                         writelogline(wcachefp, ci);
 653
 654                 /* check if file exists if so skip it */
 655                 if (r) {
 656                         relpath = "../";
 657                         fpfile = efopen(path, "w");
 658                         writeheader(fpfile, ci->summary);
 659                         fputs("<pre>", fpfile);
 660                         printshowfile(fpfile, ci);
 661                         fputs("</pre>\n", fpfile);
 662                         writefooter(fpfile);
 663                         fclose(fpfile);
 664                 }
 665 err:
 666                 commitinfo_free(ci);
 667         }
 668         git_revwalk_free(w);
 669
 670         relpath = "";
 671
 672         return 0;
 673 }
 674
 675 void
 676 printcommitatom(FILE *fp, struct commitinfo *ci)
 677 {
 678         fputs("<entry>\n", fp);
 679
 680         fprintf(fp, "<id>%s</id>\n", ci->oid);
 681         if (ci->author) {
 682                 fputs("<published>", fp);
 683                 printtimez(fp, &(ci->author->when));
 684                 fputs("</published>\n", fp);
 685         }
 686         if (ci->committer) {
 687                 fputs("<updated>", fp);
 688                 printtimez(fp, &(ci->committer->when));
 689                 fputs("</updated>\n", fp);
 690         }
 691         if (ci->summary) {
 692                 fputs("<title type=\"text\">", fp);
 693                 xmlencode(fp, ci->summary, strlen(ci->summary));
 694                 fputs("</title>\n", fp);
 695         }
 696         fprintf(fp, "<link rel=\"alternate\" type=\"text/html\" href=\"commit/%s.html\" />",
 697                 ci->oid);
 698
 699         if (ci->author) {
 700                 fputs("<author><name>", fp);
 701                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 702                 fputs("</name>\n<email>", fp);
 703                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 704                 fputs("</email>\n</author>\n", fp);
 705         }
 706
 707         fputs("<content type=\"text\">", fp);
 708         fprintf(fp, "commit %s\n", ci->oid);
 709         if (ci->parentoid[0])
 710                 fprintf(fp, "parent %s\n", ci->parentoid);
 711         if (ci->author) {
 712                 fputs("Author: ", fp);
 713                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 714                 fputs(" &lt;", fp);
 715                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 716                 fputs("&gt;\nDate:   ", fp);
 717                 printtime(fp, &(ci->author->when));
 718                 fputc('\n', fp);
 719         }
 720         if (ci->msg) {
 721                 fputc('\n', fp);
 722                 xmlencode(fp, ci->msg, strlen(ci->msg));
 723         }
 724         fputs("\n</content>\n</entry>\n", fp);
 725 }
 726
 727 int
 728 writeatom(FILE *fp)
 729 {
 730         struct commitinfo *ci;
 731         git_revwalk *w = NULL;
 732         git_oid id;
 733         size_t i, m = 100; /* last 'm' commits */
 734
 735         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 736               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 737         xmlencode(fp, strippedname, strlen(strippedname));
 738         fputs(", branch HEAD</title>\n<subtitle>", fp);
 739         xmlencode(fp, description, strlen(description));
 740         fputs("</subtitle>\n", fp);
 741
 742         git_revwalk_new(&w, repo);
 743         git_revwalk_push_head(w);
 744         git_revwalk_simplify_first_parent(w);
 745
 746         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 747                 if (!(ci = commitinfo_getbyoid(&id)))
 748                         break;
 749                 printcommitatom(fp, ci);
 750                 commitinfo_free(ci);
 751         }
 752         git_revwalk_free(w);
 753
 754         fputs("</feed>\n", fp);
 755
 756         return 0;
 757 }
 758
 759 int
 760 writeblob(git_object *obj, const char *fpath, const char *filename, git_off_t filesize)
 761 {
 762         char tmp[PATH_MAX] = "", *d;
 763         const char *p;
 764         int lc = 0;
 765         FILE *fp;
 766
 767         if (strlcpy(tmp, fpath, sizeof(tmp)) >= sizeof(tmp))
 768                 errx(1, "path truncated: '%s'", fpath);
 769         if (!(d = dirname(tmp)))
 770                 err(1, "dirname");
 771         if (mkdirp(d))
 772                 return -1;
 773
 774         for (p = fpath, tmp[0] = '\0'; *p; p++) {
 775                 if (*p == '/' && strlcat(tmp, "../", sizeof(tmp)) >= sizeof(tmp))
 776                         errx(1, "path truncated: '../%s'", tmp);
 777         }
 778         relpath = tmp;
 779
 780         fp = efopen(fpath, "w");
 781         writeheader(fp, filename);
 782         fputs("<p> ", fp);
 783         xmlencode(fp, filename, strlen(filename));
 784         fprintf(fp, " (%juB)", (uintmax_t)filesize);
 785         fputs("</p><hr/>", fp);
 786
 787         if (git_blob_is_binary((git_blob *)obj)) {
 788                 fputs("<p>Binary file.</p>\n", fp);
 789         } else {
 790                 lc = writeblobhtml(fp, (git_blob *)obj);
 791                 if (ferror(fp))
 792                         err(1, "fwrite");
 793         }
 794         writefooter(fp);
 795         fclose(fp);
 796
 797         relpath = "";
 798
 799         return lc;
 800 }
 801
 802 const char *
 803 filemode(git_filemode_t m)
 804 {
 805         static char mode[11];
 806
 807         memset(mode, '-', sizeof(mode) - 1);
 808         mode[10] = '\0';
 809
 810         if (S_ISREG(m))
 811                 mode[0] = '-';
 812         else if (S_ISBLK(m))
 813                 mode[0] = 'b';
 814         else if (S_ISCHR(m))
 815                 mode[0] = 'c';
 816         else if (S_ISDIR(m))
 817                 mode[0] = 'd';
 818         else if (S_ISFIFO(m))
 819                 mode[0] = 'p';
 820         else if (S_ISLNK(m))
 821                 mode[0] = 'l';
 822         else if (S_ISSOCK(m))
 823                 mode[0] = 's';
 824         else
 825                 mode[0] = '?';
 826
 827         if (m & S_IRUSR) mode[1] = 'r';
 828         if (m & S_IWUSR) mode[2] = 'w';
 829         if (m & S_IXUSR) mode[3] = 'x';
 830         if (m & S_IRGRP) mode[4] = 'r';
 831         if (m & S_IWGRP) mode[5] = 'w';
 832         if (m & S_IXGRP) mode[6] = 'x';
 833         if (m & S_IROTH) mode[7] = 'r';
 834         if (m & S_IWOTH) mode[8] = 'w';
 835         if (m & S_IXOTH) mode[9] = 'x';
 836
 837         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 838         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 839         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 840
 841         return mode;
 842 }
 843
 844 int
 845 writefilestree(FILE *fp, git_tree *tree, const char *path)
 846 {
 847         const git_tree_entry *entry = NULL;
 848         git_submodule *module = NULL;
 849         git_object *obj = NULL;
 850         git_off_t filesize;
 851         const char *entryname;
 852         char filepath[PATH_MAX], entrypath[PATH_MAX];
 853         size_t count, i;
 854         int lc, r, ret;
 855
 856         count = git_tree_entrycount(tree);
 857         for (i = 0; i < count; i++) {
 858                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 859                     !(entryname = git_tree_entry_name(entry)))
 860                         return -1;
 861                 joinpath(entrypath, sizeof(entrypath), path, entryname);
 862
 863                 r = snprintf(filepath, sizeof(filepath), "file/%s.html",
 864                          entrypath);
 865                 if (r < 0 || (size_t)r >= sizeof(filepath))
 866                         errx(1, "path truncated: 'file/%s.html'", entrypath);
 867
 868                 if (!git_tree_entry_to_object(&obj, repo, entry)) {
 869                         switch (git_object_type(obj)) {
 870                         case GIT_OBJ_BLOB:
 871                                 break;
 872                         case GIT_OBJ_TREE:
 873                                 /* NOTE: recurses */
 874                                 ret = writefilestree(fp, (git_tree *)obj,
 875                                                      entrypath);
 876                                 git_object_free(obj);
 877                                 if (ret)
 878                                         return ret;
 879                                 continue;
 880                         default:
 881                                 git_object_free(obj);
 882                                 continue;
 883                         }
 884
 885                         filesize = git_blob_rawsize((git_blob *)obj);
 886                         lc = writeblob(obj, filepath, entryname, filesize);
 887
 888                         fputs("<tr><td>", fp);
 889                         fputs(filemode(git_tree_entry_filemode(entry)), fp);
 890                         fprintf(fp, "</td><td><a href=\"%s", relpath);
 891                         xmlencode(fp, filepath, strlen(filepath));
 892                         fputs("\">", fp);
 893                         xmlencode(fp, entrypath, strlen(entrypath));
 894                         fputs("</a></td><td class=\"num\" align=\"right\">", fp);
 895                         if (lc > 0)
 896                                 fprintf(fp, "%dL", lc);
 897                         else
 898                                 fprintf(fp, "%juB", (uintmax_t)filesize);
 899                         fputs("</td></tr>\n", fp);
 900                         git_object_free(obj);
 901                 } else if (!git_submodule_lookup(&module, repo, entryname)) {
 902                         fprintf(fp, "<tr><td>m---------</td><td><a href=\"%sfile/.gitmodules.html\">",
 903                                 relpath);
 904                         xmlencode(fp, entrypath, strlen(entrypath));
 905                         git_submodule_free(module);
 906                         fputs("</a></td><td class=\"num\" align=\"right\"></td></tr>\n", fp);
 907                 }
 908         }
 909
 910         return 0;
 911 }
 912
 913 int
 914 writefiles(FILE *fp, const git_oid *id)
 915 {
 916         git_tree *tree = NULL;
 917         git_commit *commit = NULL;
 918         int ret = -1;
 919
 920         fputs("<table id=\"files\"><thead>\n<tr>"
 921               "<td><b>Mode</b></td><td><b>Name</b></td>"
 922               "<td class=\"num\" align=\"right\"><b>Size</b></td>"
 923               "</tr>\n</thead><tbody>\n", fp);
 924
 925         if (!git_commit_lookup(&commit, repo, id) &&
 926             !git_commit_tree(&tree, commit))
 927                 ret = writefilestree(fp, tree, "");
 928
 929         fputs("</tbody></table>", fp);
 930
 931         git_commit_free(commit);
 932         git_tree_free(tree);
 933
 934         return ret;
 935 }
 936
 937 int
 938 refs_cmp(const void *v1, const void *v2)
 939 {
 940         git_reference *r1 = (*(git_reference **)v1);
 941         git_reference *r2 = (*(git_reference **)v2);
 942         int r;
 943
 944         if ((r = git_reference_is_branch(r1) - git_reference_is_branch(r2)))
 945                 return r;
 946
 947         return strcmp(git_reference_shorthand(r1),
 948                       git_reference_shorthand(r2));
 949 }
 950
 951 int
 952 writerefs(FILE *fp)
 953 {
 954         struct commitinfo *ci;
 955         const git_oid *id = NULL;
 956         git_object *obj = NULL;
 957         git_reference *dref = NULL, *r, *ref = NULL;
 958         git_reference_iterator *it = NULL;
 959         git_reference **refs = NULL;
 960         size_t count, i, j, refcount;
 961         const char *titles[] = { "Branches", "Tags" };
 962         const char *ids[] = { "branches", "tags" };
 963         const char *name;
 964
 965         if (git_reference_iterator_new(&it, repo))
 966                 return -1;
 967
 968         for (refcount = 0; !git_reference_next(&ref, it); refcount++) {
 969                 if (!(refs = reallocarray(refs, refcount + 1, sizeof(git_reference *))))
 970                         err(1, "realloc");
 971                 refs[refcount] = ref;
 972         }
 973         git_reference_iterator_free(it);
 974
 975         /* sort by type then shorthand name */
 976         qsort(refs, refcount, sizeof(git_reference *), refs_cmp);
 977
 978         for (j = 0; j < 2; j++) {
 979                 for (i = 0, count = 0; i < refcount; i++) {
 980                         if (!(git_reference_is_branch(refs[i]) && j == 0) &&
 981                             !(git_reference_is_tag(refs[i]) && j == 1))
 982                                 continue;
 983
 984                         switch (git_reference_type(refs[i])) {
 985                         case GIT_REF_SYMBOLIC:
 986                                 if (git_reference_resolve(&dref, refs[i]))
 987                                         goto err;
 988                                 r = dref;
 989                                 break;
 990                         case GIT_REF_OID:
 991                                 r = refs[i];
 992                                 break;
 993                         default:
 994                                 continue;
 995                         }
 996                         if (!git_reference_target(r) ||
 997                             git_reference_peel(&obj, r, GIT_OBJ_ANY))
 998                                 goto err;
 999                         if (!(id = git_object_id(obj)))
1000                                 goto err;
1001                         if (!(ci = commitinfo_getbyoid(id)))
1002                                 break;
1003
1004                         /* print header if it has an entry (first). */
1005                         if (++count == 1) {
1006                                 fprintf(fp, "<h2>%s</h2><table id=\"%s\">"
1007                                         "<thead>\n<tr><td><b>Name</b></td>"
1008                                         "<td><b>Last commit date</b></td>"
1009                                         "<td><b>Author</b></td>\n</tr>\n"
1010                                         "</thead><tbody>\n",
1011                                          titles[j], ids[j]);
1012                         }
1013
1014                         relpath = "";
1015                         name = git_reference_shorthand(r);
1016
1017                         fputs("<tr><td>", fp);
1018                         xmlencode(fp, name, strlen(name));
1019                         fputs("</td><td>", fp);
1020                         if (ci->author)
1021                                 printtimeshort(fp, &(ci->author->when));
1022                         fputs("</td><td>", fp);
1023                         if (ci->author)
1024                                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
1025                         fputs("</td></tr>\n", fp);
1026
1027                         relpath = "../";
1028
1029                         commitinfo_free(ci);
1030                         git_object_free(obj);
1031                         obj = NULL;
1032                         git_reference_free(dref);
1033                         dref = NULL;
1034                 }
1035                 /* table footer */
1036                 if (count)
1037                         fputs("</tbody></table><br/>", fp);
1038         }
1039
1040 err:
1041         git_object_free(obj);
1042         git_reference_free(dref);
1043
1044         for (i = 0; i < refcount; i++)
1045                 git_reference_free(refs[i]);
1046         free(refs);
1047
1048         return 0;
1049 }
1050
1051 void
1052 usage(char *argv0)
1053 {
1054         fprintf(stderr, "%s [-c cachefile | -l commits] repodir\n", argv0);
1055         exit(1);
1056 }
1057
1058 int
1059 main(int argc, char *argv[])
1060 {
1061         git_object *obj = NULL;
1062         const git_oid *head = NULL;
1063         mode_t mask;
1064         FILE *fp, *fpread;
1065         char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
1066         char tmppath[64] = "cache.XXXXXXXXXXXX", buf[BUFSIZ];
1067         size_t n;
1068         int i, fd;
1069
1070         for (i = 1; i < argc; i++) {
1071                 if (argv[i][0] != '-') {
1072                         if (repodir)
1073                                 usage(argv[0]);
1074                         repodir = argv[i];
1075                 } else if (argv[i][1] == 'c') {
1076                         if (nlogcommits > 0 || i + 1 >= argc)
1077                                 usage(argv[0]);
1078                         cachefile = argv[++i];
1079                 } else if (argv[i][1] == 'l') {
1080                         if (cachefile || i + 1 >= argc)
1081                                 usage(argv[0]);
1082                         errno = 0;
1083                         nlogcommits = strtoll(argv[++i], &p, 10);
1084                         if (argv[i][0] == '\0' || *p != '\0' ||
1085                             nlogcommits <= 0 || errno)
1086                                 usage(argv[0]);
1087                 }
1088         }
1089         if (!repodir)
1090                 usage(argv[0]);
1091
1092         if (!realpath(repodir, repodirabs))
1093                 err(1, "realpath");
1094
1095         git_libgit2_init();
1096
1097 #ifdef __OpenBSD__
1098         if (cachefile) {
1099                 if (pledge("stdio rpath wpath cpath fattr", NULL) == -1)
1100                         err(1, "pledge");
1101         } else {
1102                 if (pledge("stdio rpath wpath cpath", NULL) == -1)
1103                         err(1, "pledge");
1104         }
1105 #endif
1106
1107         if (git_repository_open_ext(&repo, repodir,
1108                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL) < 0) {
1109                 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
1110                 return 1;
1111         }
1112
1113         /* find HEAD */
1114         if (!git_revparse_single(&obj, repo, "HEAD"))
1115                 head = git_object_id(obj);
1116         git_object_free(obj);
1117
1118         /* use directory name as name */
1119         if ((name = strrchr(repodirabs, '/')))
1120                 name++;
1121         else
1122                 name = "";
1123
1124         /* strip .git suffix */
1125         if (!(strippedname = strdup(name)))
1126                 err(1, "strdup");
1127         if ((p = strrchr(strippedname, '.')))
1128                 if (!strcmp(p, ".git"))
1129                         *p = '\0';
1130
1131         /* read description or .git/description */
1132         joinpath(path, sizeof(path), repodir, "description");
1133         if (!(fpread = fopen(path, "r"))) {
1134                 joinpath(path, sizeof(path), repodir, ".git/description");
1135                 fpread = fopen(path, "r");
1136         }
1137         if (fpread) {
1138                 if (!fgets(description, sizeof(description), fpread))
1139                         description[0] = '\0';
1140                 fclose(fpread);
1141         }
1142
1143         /* read url or .git/url */
1144         joinpath(path, sizeof(path), repodir, "url");
1145         if (!(fpread = fopen(path, "r"))) {
1146                 joinpath(path, sizeof(path), repodir, ".git/url");
1147                 fpread = fopen(path, "r");
1148         }
1149         if (fpread) {
1150                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1151                         cloneurl[0] = '\0';
1152                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
1153                 fclose(fpread);
1154         }
1155
1156         /* check LICENSE */
1157         for (i = 0; i < sizeof(licensefiles) / sizeof(*licensefiles) && !license; i++) {
1158                 if (!git_revparse_single(&obj, repo, licensefiles[i]) &&
1159                     git_object_type(obj) == GIT_OBJ_BLOB)
1160                         license = licensefiles[i] + strlen("HEAD:");
1161                 git_object_free(obj);
1162         }
1163
1164         /* check README */
1165         for (i = 0; i < sizeof(readmefiles) / sizeof(*readmefiles) && !readme; i++) {
1166                 if (!git_revparse_single(&obj, repo, readmefiles[i]) &&
1167                     git_object_type(obj) == GIT_OBJ_BLOB)
1168                         readme = readmefiles[i] + strlen("HEAD:");
1169                 git_object_free(obj);
1170         }
1171
1172         if (!git_revparse_single(&obj, repo, "HEAD:.gitmodules") &&
1173             git_object_type(obj) == GIT_OBJ_BLOB)
1174                 submodules = ".gitmodules";
1175         git_object_free(obj);
1176
1177         /* log for HEAD */
1178         fp = efopen("log.html", "w");
1179         relpath = "";
1180         mkdir("commit", S_IRWXU | S_IRWXG | S_IRWXO);
1181         writeheader(fp, "Log");
1182         fputs("<table id=\"log\"><thead>\n<tr><td><b>Date</b></td>"
1183               "<td><b>Commit message</b></td>"
1184               "<td><b>Author</b></td><td class=\"num\" align=\"right\"><b>Files</b></td>"
1185               "<td class=\"num\" align=\"right\"><b>+</b></td>"
1186               "<td class=\"num\" align=\"right\"><b>-</b></td></tr>\n</thead><tbody>\n", fp);
1187
1188         if (cachefile && head) {
1189                 /* read from cache file (does not need to exist) */
1190                 if ((rcachefp = fopen(cachefile, "r"))) {
1191                         if (!fgets(lastoidstr, sizeof(lastoidstr), rcachefp))
1192                                 errx(1, "%s: no object id", cachefile);
1193                         if (git_oid_fromstr(&lastoid, lastoidstr))
1194                                 errx(1, "%s: invalid object id", cachefile);
1195                 }
1196
1197                 /* write log to (temporary) cache */
1198                 if ((fd = mkstemp(tmppath)) == -1)
1199                         err(1, "mkstemp");
1200                 if (!(wcachefp = fdopen(fd, "w")))
1201                         err(1, "fdopen: '%s'", tmppath);
1202                 /* write last commit id (HEAD) */
1203                 git_oid_tostr(buf, sizeof(buf), head);
1204                 fprintf(wcachefp, "%s\n", buf);
1205
1206                 writelog(fp, head);
1207
1208                 if (rcachefp) {
1209                         /* append previous log to log.html and the new cache */
1210                         while (!feof(rcachefp)) {
1211                                 n = fread(buf, 1, sizeof(buf), rcachefp);
1212                                 if (ferror(rcachefp))
1213                                         err(1, "fread");
1214                                 if (fwrite(buf, 1, n, fp) != n ||
1215                                     fwrite(buf, 1, n, wcachefp) != n)
1216                                         err(1, "fwrite");
1217                         }
1218                         fclose(rcachefp);
1219                 }
1220                 fclose(wcachefp);
1221         } else {
1222                 if (head)
1223                         writelog(fp, head);
1224         }
1225
1226         fputs("</tbody></table>", fp);
1227         writefooter(fp);
1228         fclose(fp);
1229
1230         /* files for HEAD */
1231         fp = efopen("files.html", "w");
1232         writeheader(fp, "Files");
1233         if (head)
1234                 writefiles(fp, head);
1235         writefooter(fp);
1236         fclose(fp);
1237
1238         /* summary page with branches and tags */
1239         fp = efopen("refs.html", "w");
1240         writeheader(fp, "Refs");
1241         writerefs(fp);
1242         writefooter(fp);
1243         fclose(fp);
1244
1245         /* Atom feed */
1246         fp = efopen("atom.xml", "w");
1247         writeatom(fp);
1248         fclose(fp);
1249
1250         /* rename new cache file on success */
1251         if (cachefile && head) {
1252                 if (rename(tmppath, cachefile))
1253                         err(1, "rename: '%s' to '%s'", tmppath, cachefile);
1254                 umask((mask = umask(0)));
1255                 if (chmod(cachefile,
1256                     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mask))
1257                         err(1, "chmod: '%s'", cachefile);
1258         }
1259
1260         /* cleanup */
1261         git_repository_free(repo);
1262         git_libgit2_shutdown();
1263
1264         return 0;
1265 }