109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2009 Denys Vlasenko <vda.linux@googlemail.com>
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
/*
|
|
* This program is a CGI application. It processes server-side includes:
|
|
* <!--#include file="file.html" -->
|
|
*
|
|
* Usage: put these lines in httpd.conf:
|
|
*
|
|
* *.html:/bin/httpd_ssi
|
|
* *.htm:/bin/httpd_ssi
|
|
*/
|
|
|
|
/* Build a-la
|
|
i486-linux-uclibc-gcc \
|
|
-static -static-libgcc \
|
|
-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 \
|
|
-Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Werror \
|
|
-Wold-style-definition -Wdeclaration-after-statement -Wno-pointer-sign \
|
|
-Wmissing-prototypes -Wmissing-declarations \
|
|
-Os -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer \
|
|
-ffunction-sections -fdata-sections -fno-guess-branch-probability \
|
|
-funsigned-char \
|
|
-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 \
|
|
-march=i386 -mpreferred-stack-boundary=2 \
|
|
-Wl,-Map -Wl,link.map -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
|
|
httpd_ssi.c -o httpd_ssi
|
|
*/
|
|
|
|
/* Size (i386, static uclibc, approximate):
|
|
text data bss dec hex filename
|
|
8931 164 68552 77647 12f4f httpd_ssi
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <errno.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <dirent.h>
|
|
#include <time.h>
|
|
|
|
static char line[64 * 1024];
|
|
|
|
/*
|
|
* Currently only handles directives which are alone on the line
|
|
*/
|
|
static void process_includes(const char *filename)
|
|
{
|
|
FILE *fp = fopen(filename, "r");
|
|
if (!fp)
|
|
exit(1);
|
|
|
|
#define INCLUDE "<!--#include file=\""
|
|
while (fgets(line, sizeof(line), fp)) {
|
|
char *closing_dq;
|
|
|
|
/* FIXME: output text leading to INCLUDE first */
|
|
if (strncmp(line, INCLUDE, sizeof(INCLUDE)-1) != 0
|
|
|| (closing_dq = strchr(line + sizeof(INCLUDE)-1, '"')) == NULL
|
|
/* or strstr(line + sizeof(INCLUDE)-1, "\" -->")? */
|
|
) {
|
|
fputs(line, stdout);
|
|
continue;
|
|
}
|
|
*closing_dq = '\0';
|
|
/* FIXME:
|
|
* (1) are relative paths with /../ etc ok?
|
|
* (2) if we include a/1.htm and it includes b/2.htm,
|
|
* do we need to include a/b/2.htm or b/2.htm?
|
|
* IOW, do we need to "cd $dirname"?
|
|
*/
|
|
process_includes(line + sizeof(INCLUDE)-1);
|
|
/* FIXME: this should be the tail of line after --> */
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
if (!argv[1])
|
|
return 1;
|
|
|
|
/* Seen from busybox.net's Apache:
|
|
* HTTP/1.1 200 OK
|
|
* Date: Thu, 10 Sep 2009 18:23:28 GMT
|
|
* Server: Apache
|
|
* Accept-Ranges: bytes
|
|
* Connection: close
|
|
* Content-Type: text/html
|
|
*/
|
|
printf(
|
|
/* "Date: Thu, 10 Sep 2009 18:23:28 GMT\r\n" */
|
|
/* "Server: Apache\r\n" */
|
|
/* "Accept-Ranges: bytes\r\n" - do we really accept bytes?! */
|
|
"Connection: close\r\n"
|
|
"Content-Type: text/html\r\n"
|
|
"\r\n"
|
|
);
|
|
process_includes(argv[1]);
|
|
return 0;
|
|
}
|