/* ui-plain.c: functions for output of plain blobs by path * * Copyright (C) 2006-2014 cgit Development Team * * Licensed under GNU General Public License v2 * (see COPYING for full license text) */ #include "cgit.h" #include "ui-plain.h" #include "html.h" #include "ui-shared.h" struct walk_tree_context { int match_baselen; int match; }; static int print_object(const unsigned char *sha1, const char *path) { enum object_type type; char *buf, *mimetype; unsigned long size; type = sha1_object_info(sha1, &size); if (type == OBJ_BAD) { cgit_print_error_page(404, "Not found", "Not found"); return 0; } buf = read_sha1_file(sha1, &type, &size); if (!buf) { cgit_print_error_page(404, "Not found", "Not found"); return 0; } mimetype = get_mimetype_for_filename(path); ctx.page.mimetype = mimetype; if (!ctx.repo->enable_html_serving) { html("X-Content-Type-Options: nosniff\n"); html("Content-Security-Policy: default-src 'none'\n"); if (mimetype) { /* Built-in white list allows PDF and everything that isn't text/ and application/ */ if ((!strncmp(mimetype, "text/", 5) || !strncmp(mimetype, "application/", 12)) && strcmp(mimetype, "application/pdf")) ctx.page.mimetype = NULL; } } if (!ctx.page.mimetype) { if (buffer_is_binary(buf, size)) { ctx.page.mimetype = "application/octet-stream"; ctx.page.charset = NULL; } else { ctx.page.mimetype = "text/plain"; } } ctx.page.filename = path; ctx.page.size = size; ctx.page.etag = sha1_to_hex(sha1); cgit_print_http_headers(); html_raw(buf, size); free(mimetype); free(buf); return 1; } static char *buildpath(const char *base, int baselen, const char *path) { if (path[0]) return fmtalloc("%.*s%s/", baselen, base, path); else return fmtalloc("%.*s/", baselen, base); } static void print_dir(const unsigned char *sha1, const char *base, int baselen, const char *path) { char *fullpath, *slash; size_t len; fullpath = buildpath(base, baselen, path); slash = (fullpath[0] == '/' ? "" : "/"); ctx.page.etag = sha1_to_hex(sha1); cgit_print_http_headers(); htmlf("%s", slash); html_txt(fullpath); htmlf("\n\n

%s", slash); html_txt(fullpath); html("

\n\n\n"); } static int walk_tree(const unsigned char *sha1, struct strbuf *base, const char *pathname, unsigned mode, int stage, void *cbdata) { struct walk_tree_context *walk_tree_ctx = cbdata; if (base->len == walk_tree_ctx->match_baselen) { if (S_ISREG(mode)) { if (print_object(sha1, pathname)) walk_tree_ctx->match = 1; } else if (S_ISDIR(mode)) { print_dir(sha1, base->buf, base->len, pathname); walk_tree_ctx->match = 2; return READ_TREE_RECURSIVE; } } else if (base->len < INT_MAX && (int)base->len > walk_tree_ctx->match_baselen) { print_dir_entry(sha1, base->buf, base->len, pathname, mode); walk_tree_ctx->match = 2; } else if (S_ISDIR(mode)) { return READ_TREE_RECURSIVE; } return 0; } static int basedir_len(const char *path) { char *p = strrchr(path, '/'); if (p) return p - path + 1; return 0; } void cgit_print_plain(void) { const char *rev = ctx.qry.sha1; unsigned char sha1[20]; struct commit *commit; struct pathspec_item path_items = { .match = ctx.qry.path, .len = ctx.qry.path ? strlen(ctx.qry.path) : 0 }; struct pathspec paths = { .nr = 1, .items = &path_items }; struct walk_tree_context walk_tree_ctx = { .match = 0 }; if (!rev) rev = ctx.qry.head; if (cgit_get_sha1(rev, sha1)) { cgit_print_error_page(404, "Not found", "Not found"); return; } commit = lookup_commit_reference(sha1); if (!commit || parse_commit(commit)) { cgit_print_error_page(404, "Not found", "Not found"); return; } if (!path_items.match) { path_items.match = ""; walk_tree_ctx.match_baselen = -1; print_dir(commit->tree->object.oid.hash, "", 0, ""); walk_tree_ctx.match = 2; } else walk_tree_ctx.match_baselen = basedir_len(path_items.match); read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx); if (!walk_tree_ctx.match) cgit_print_error_page(404, "Not found", "Not found"); else if (walk_tree_ctx.match == 2) print_dir_tail(); }