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httpd: use full size of iobuf[] when piping CGI data

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2019-04-19 14:19:41 +02:00
parent af6012a1a7
commit 1c356948f1
2 changed files with 4 additions and 14 deletions
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15
networking/httpd.c
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@ -259,18 +259,11 @@
#if ENABLE_FEATURE_USE_SENDFILE
# include <sys/sendfile.h>
#endif
/* amount of buffering in a pipe */
#ifndef PIPE_BUF
# define PIPE_BUF 4096
#endif
#define DEBUG 0
#define IOBUF_SIZE 8192
#define MAX_HTTP_HEADERS_SIZE ((8*1024) - 16)
#if PIPE_BUF >= IOBUF_SIZE
# error "PIPE_BUF >= IOBUF_SIZE"
#endif
#define MAX_HTTP_HEADERS_SIZE (32*1024)
#define HEADER_READ_TIMEOUT 60
@ -1413,10 +1406,10 @@ static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post
* CGI may output a few first bytes and then wait
* for POSTDATA without closing stdout.
* With full_read we may wait here forever. */
count = safe_read(fromCgi_rd, rbuf + out_cnt, PIPE_BUF - 8);
count = safe_read(fromCgi_rd, rbuf + out_cnt, IOBUF_SIZE - 8);
if (count <= 0) {
/* eof (or error) and there was no "HTTP",
* so write it, then write received data */
* send "HTTP/1.0 200 OK\r\n", then send received data */
if (out_cnt) {
full_write(STDOUT_FILENO, HTTP_200, sizeof(HTTP_200)-1);
full_write(STDOUT_FILENO, rbuf, out_cnt);
@ -1454,7 +1447,7 @@ static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post
out_cnt = -1; /* buffering off */
}
} else {
count = safe_read(fromCgi_rd, rbuf, PIPE_BUF);
count = safe_read(fromCgi_rd, rbuf, IOBUF_SIZE);
if (count <= 0)
break; /* eof (or error) */
}

3
shell/hush.c
View File

@ -363,9 +363,6 @@
#ifndef F_DUPFD_CLOEXEC
# define F_DUPFD_CLOEXEC F_DUPFD
#endif
#ifndef PIPE_BUF
# define PIPE_BUF 4096 /* amount of buffering in a pipe */
#endif
#if ENABLE_FEATURE_SH_EMBEDDED_SCRIPTS && !(ENABLE_ASH || ENABLE_SH_IS_ASH || ENABLE_BASH_IS_ASH)
# include "embedded_scripts.h"