1/* ui-blob.c: show blob content
 2 *
 3 * Copyright (C) 2008 Lars Hjemli
 4 *
 5 * Licensed under GNU General Public License v2
 6 *   (see COPYING for full license text)
 7 */
 8
 9#include "cgit.h"
10#include "html.h"
11#include "ui-shared.h"
12
13static char *match_path;
14static unsigned char *matched_sha1;
15
16static int walk_tree(const unsigned char *sha1, const char *base,int baselen,
17	const char *pathname, unsigned mode, int stage, void *cbdata) {
18	if(strncmp(base,match_path,baselen)
19		|| strcmp(match_path+baselen,pathname) )
20		return READ_TREE_RECURSIVE;
21	memmove(matched_sha1,sha1,20);
22	return 0;
23}
24
25void cgit_print_blob(const char *hex, char *path, const char *head)
26{
27
28	unsigned char sha1[20];
29	enum object_type type;
30	unsigned char *buf;
31	unsigned long size;
32	struct commit *commit;
33	const char *paths[] = {path, NULL};
34
35	if (hex) {
36		if (get_sha1_hex(hex, sha1)){
37			cgit_print_error(fmt("Bad hex value: %s", hex));
38			return;
39		}
40	} else {
41		if (get_sha1(head,sha1)) {
42			cgit_print_error(fmt("Bad ref: %s", head));
43			return;
44		}
45	}
46
47	type = sha1_object_info(sha1, &size);
48
49	if((!hex) && type == OBJ_COMMIT && path) {
50		commit = lookup_commit_reference(sha1);
51		match_path = path;
52		matched_sha1 = sha1;
53		read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
54		type = sha1_object_info(sha1,&size);
55	}
56
57	if (type == OBJ_BAD) {
58		cgit_print_error(fmt("Bad object name: %s", hex));
59		return;
60	}
61
62	buf = read_sha1_file(sha1, &type, &size);
63	if (!buf) {
64		cgit_print_error(fmt("Error reading object %s", hex));
65		return;
66	}
67
68	buf[size] = '\0';
69	ctx.page.mimetype = ctx.qry.mimetype;
70	ctx.page.filename = path;
71	cgit_print_http_headers(&ctx);
72	write(htmlfd, buf, size);
73}