| /* ui-blob.c: show blob content |
| * |
| * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> |
| * |
| * Licensed under GNU General Public License v2 |
| * (see COPYING for full license text) |
| */ |
| |
| #include "cgit.h" |
| #include "ui-blob.h" |
| #include "html.h" |
| #include "ui-shared.h" |
| |
| struct walk_tree_context { |
| const char *match_path; |
| struct object_id *matched_oid; |
| unsigned int found_path:1; |
| unsigned int file_only:1; |
| }; |
| |
| static int walk_tree(const struct object_id *oid, struct strbuf *base, |
| const char *pathname, unsigned mode, int stage, void *cbdata) |
| { |
| struct walk_tree_context *walk_tree_ctx = cbdata; |
| |
| if (walk_tree_ctx->file_only && !S_ISREG(mode)) |
| return READ_TREE_RECURSIVE; |
| if (strncmp(base->buf, walk_tree_ctx->match_path, base->len) |
| || strcmp(walk_tree_ctx->match_path + base->len, pathname)) |
| return READ_TREE_RECURSIVE; |
| oidcpy(walk_tree_ctx->matched_oid, oid); |
| walk_tree_ctx->found_path = 1; |
| return 0; |
| } |
| |
| int cgit_ref_path_exists(const char *path, const char *ref, int file_only) |
| { |
| struct object_id oid; |
| unsigned long size; |
| struct pathspec_item path_items = { |
| .match = xstrdup(path), |
| .len = strlen(path) |
| }; |
| struct pathspec paths = { |
| .nr = 1, |
| .items = &path_items |
| }; |
| struct walk_tree_context walk_tree_ctx = { |
| .match_path = path, |
| .matched_oid = &oid, |
| .found_path = 0, |
| .file_only = file_only |
| }; |
| |
| if (get_oid(ref, &oid)) |
| goto done; |
| if (oid_object_info(the_repository, &oid, &size) != OBJ_COMMIT) |
| goto done; |
| read_tree_recursive(the_repository, lookup_commit_reference(the_repository, &oid)->maybe_tree, |
| "", 0, 0, &paths, walk_tree, &walk_tree_ctx); |
| |
| done: |
| free(path_items.match); |
| return walk_tree_ctx.found_path; |
| } |
| |
| int cgit_print_file(char *path, const char *head, int file_only) |
| { |
| struct object_id oid; |
| enum object_type type; |
| char *buf; |
| unsigned long size; |
| struct commit *commit; |
| struct pathspec_item path_items = { |
| .match = path, |
| .len = strlen(path) |
| }; |
| struct pathspec paths = { |
| .nr = 1, |
| .items = &path_items |
| }; |
| struct walk_tree_context walk_tree_ctx = { |
| .match_path = path, |
| .matched_oid = &oid, |
| .found_path = 0, |
| .file_only = file_only |
| }; |
| |
| if (get_oid(head, &oid)) |
| return -1; |
| type = oid_object_info(the_repository, &oid, &size); |
| if (type == OBJ_COMMIT) { |
| commit = lookup_commit_reference(the_repository, &oid); |
| read_tree_recursive(the_repository, commit->maybe_tree, |
| "", 0, 0, &paths, walk_tree, &walk_tree_ctx); |
| if (!walk_tree_ctx.found_path) |
| return -1; |
| type = oid_object_info(the_repository, &oid, &size); |
| } |
| if (type == OBJ_BAD) |
| return -1; |
| buf = read_object_file(&oid, &type, &size); |
| if (!buf) |
| return -1; |
| buf[size] = '\0'; |
| html_raw(buf, size); |
| free(buf); |
| return 0; |
| } |
| |
| void cgit_print_blob(const char *hex, char *path, const char *head, int file_only) |
| { |
| struct object_id oid; |
| enum object_type type; |
| char *buf; |
| unsigned long size; |
| struct commit *commit; |
| struct pathspec_item path_items = { |
| .match = path, |
| .len = path ? strlen(path) : 0 |
| }; |
| struct pathspec paths = { |
| .nr = 1, |
| .items = &path_items |
| }; |
| struct walk_tree_context walk_tree_ctx = { |
| .match_path = path, |
| .matched_oid = &oid, |
| .found_path = 0, |
| .file_only = file_only |
| }; |
| |
| if (hex) { |
| if (get_oid_hex(hex, &oid)) { |
| cgit_print_error_page(400, "Bad request", |
| "Bad hex value: %s", hex); |
| return; |
| } |
| } else { |
| if (get_oid(head, &oid)) { |
| cgit_print_error_page(404, "Not found", |
| "Bad ref: %s", head); |
| return; |
| } |
| } |
| |
| type = oid_object_info(the_repository, &oid, &size); |
| |
| if ((!hex) && type == OBJ_COMMIT && path) { |
| commit = lookup_commit_reference(the_repository, &oid); |
| read_tree_recursive(the_repository, commit->maybe_tree, |
| "", 0, 0, &paths, walk_tree, &walk_tree_ctx); |
| type = oid_object_info(the_repository, &oid, &size); |
| } |
| |
| if (type == OBJ_BAD) { |
| cgit_print_error_page(404, "Not found", |
| "Bad object name: %s", hex); |
| return; |
| } |
| |
| buf = read_object_file(&oid, &type, &size); |
| if (!buf) { |
| cgit_print_error_page(500, "Internal server error", |
| "Error reading object %s", hex); |
| return; |
| } |
| |
| buf[size] = '\0'; |
| if (buffer_is_binary(buf, size)) |
| ctx.page.mimetype = "application/octet-stream"; |
| else |
| ctx.page.mimetype = "text/plain"; |
| ctx.page.filename = path; |
| |
| html("X-Content-Type-Options: nosniff\n"); |
| html("Content-Security-Policy: default-src 'none'\n"); |
| cgit_print_http_headers(); |
| html_raw(buf, size); |
| free(buf); |
| } |