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/* 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 unsigned char *sha1, 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;
hashcpy(walk_tree_ctx->matched_oid->hash, sha1);
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 (sha1_object_info(oid.hash, &size) != OBJ_COMMIT)
goto done;
read_tree_recursive(lookup_commit_reference(&oid)->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 = sha1_object_info(oid.hash, &size);
if (type == OBJ_COMMIT) {
commit = lookup_commit_reference(&oid);
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
if (!walk_tree_ctx.found_path)
return -1;
type = sha1_object_info(oid.hash, &size);
}
if (type == OBJ_BAD)
return -1;
buf = read_sha1_file(oid.hash, &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 = sha1_object_info(oid.hash, &size);
if ((!hex) && type == OBJ_COMMIT && path) {
commit = lookup_commit_reference(&oid);
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
type = sha1_object_info(oid.hash, &size);
}
if (type == OBJ_BAD) {
cgit_print_error_page(404, "Not found",
"Bad object name: %s", hex);
return;
}
buf = read_sha1_file(oid.hash, &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);
}
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