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<td width="68%" background="DDl_back2.jpg" height="44"><big><big><font face="黑体"><p align="center">               ● UNIX网络编程                       (BM: clown)                </font></big></big></td></tr>
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<tr><td width="100%" colspan="2" height="100" align="center" valign="top"><br><p align="center">[<a href="index.htm">回到开始</a>][<a href="189.htm">上一层</a>][<a href="236.htm">下一篇</a>]
<hr><p align="left"><small>发信人: guru ( Darkness), 信区: unp <br>

标  题: micro_httpd---really small httpd <br>

发信站: UNIX编程 (2001年06月29日13:27:02 星期五), 站内信件 <br>

  <br>

发信人: scz (小四), 信区: PUE WWW-POST <br>

标  题: micro_httpd - really small HTTP server <br>

发信站: 武汉白云黄鹤站 (Fri Jun 29 12:57:55 2001) , 转信 <br>

/* micro_httpd - really small HTTP server <br>

** <br>

** Copyright ?1999 by Jef Poskanzer <jef@acme.com>. All rights reserved. <br>

** <br>

** Redistribution and use in source and binary forms, with or without <br>

** modification, are permitted provided that the following conditions <br>

** are met: <br>

** 1. Redistributions of source code must retain the above copyright <br>

**    notice, this list of conditions and the following disclaimer. <br>

** 2. Redistributions in binary form must reproduce the above copyright <br>

**    notice, this list of conditions and the following disclaimer in the <br>

**    documentation and/or other materials provided with the distribution. <br>

** <br>

** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND <br>

** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE <br>

** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOS <br>



E <br>

** ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE <br>

** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIA <br>

L <br>

** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS <br>

** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) <br>

** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC <br>

T <br>

** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY <br>

  <br>

** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF <br>

** SUCH DAMAGE. <br>

*/ <br>

#include <unistd.h> <br>

#include <stdlib.h> <br>

#include <stdio.h> <br>

#include <string.h> <br>

#include <sys/types.h> <br>

#include <sys/stat.h> <br>

#include <sys/time.h> <br>

#define SERVER_NAME "micro_httpd" <br>

#define SERVER_URL "http://www.acme.com/software/micro_httpd/" <br>



#define PROTOCOL "HTTP/1.0" <br>

#define RFC1123FMT "%a, %d %b %Y %H:%M:%S GMT" <br>

/* Forwards. */ <br>

static void send_error( int status, char* title, char* extra_header, char* t <br>

ext <br>

); <br>

static void send_headers( int status, char* title, char* extra_header, char* <br>

 mim <br>

e_type, int length, time_t mod ); <br>

static char* get_mime_type( char* name ); <br>

int <br>

main( int argc, char** argv ) <br>

    { <br>

    char line[10000], method[10000], path[10000], protocol[10000], idx[20000 <br>

], l <br>

ocation[20000], command[20000]; <br>

    char* file; <br>

    int len, ich; <br>

    struct stat sb; <br>

    FILE* fp; <br>

    if ( argc != 2 ) <br>

        send_error( 500, "Internal Error", (char*) 0, "Config error - no dir <br>



 spe <br>

cified. <br>

" ); <br>

    if ( chdir( argv[1] ) < 0 ) <br>

        send_error( 500, "Internal Error", (char*) 0, "Config error - couldn <br>

't c <br>

hdir(). <br>

" ); <br>

    if ( fgets( line, sizeof(line), stdin ) == (char*) 0 ) <br>

        send_error( 400, "Bad Request", (char*) 0, "No request found." ); <br>

    if ( sscanf( line, "%[^ ] %[^ ] %[^ ]", method, path, protocol ) != 3 ) <br>

        send_error( 400, "Bad Request", (char*) 0, "Can't parse request." ); <br>

  <br>

    while ( fgets( line, sizeof(line), stdin ) != (char*) 0 ) <br>

        { <br>

        if ( strcmp( line, "\n" ) == 0 || strcmp( line, "\r\n" ) == 0 ) <br>

            break; <br>

        } <br>

    if ( strcasecmp( method, "get" ) != 0 ) <br>

        send_error( 501, "Not Implemented", (char*) 0, "That method is not i <br>

mple <br>

mented. <br>

mented. <br>

" ); <br>

    if ( path[0] != '/' ) <br>

        send_error( 400, "Bad Request", (char*) 0, "Bad filename." ); <br>

    file = &(path[1]); <br>

    if ( file[0] == '\0' ) <br>

        file = "./"; <br>

    len = strlen( file ); <br>

    if ( file[0] == '/' || strcmp( file, ".." ) == 0 || strncmp( file, "../" <br>

, 3 <br>

) == 0 || strstr( file, "/../" ) != (char*) 0 || strcmp( &(file[len-3]), "/. <br>

." ) <br>

 == 0 ) <br>

        send_error( 400, "Bad Request", (char*) 0, "Illegal filename." ); <br>

    if ( stat( file, &sb ) < 0 ) <br>

        send_error( 404, "Not Found", (char*) 0, "File not found." ); <br>

    if ( S_ISDIR( sb.st_mode ) ) <br>

        { <br>

        if ( file[len-1] != '/' ) <br>

            { <br>

            (void) snprintf( <br>

                location, sizeof(location), "Location: %s/", path ); <br>

            send_error( 302, "Found", location, "Directories must end with a <br>



 sla <br>

sh." ); <br>

            } <br>

        (void) snprintf( idx, sizeof(idx), "%sindex.html", file ); <br>

        if ( stat( idx, &sb ) >= 0 ) <br>

            { <br>

            file = idx; <br>

            goto do_file; <br>

            } <br>

        send_headers( 200, "Ok", (char*) 0, "text/html", -1, sb.st_mtime ); <br>

        (void) printf( "<HTML><HEAD><TITLE>Index of %s</TITLE></HEAD>\n<BODY <br>

 BGC <br>

OLOR=\" <br>

#99cc99\"><H4>Index of %s</H4>\n<PRE>\n", file, file ); <br>

        if ( strchr( file, '\'' ) == (char*) 0 ) <br>

            { <br>

            (void) snprintf( command, sizeof(command), <br>

                "ls -lgF '%s' | tail +2 | sed -e 's/^\\([^ ][^ ]*\\)\\(  *[^ <br>

 ][^ <br>

 ]*  *[^ ][^ ] <br>

*  *[^ ][^ ]*\\)\\(  *[^ ][^ ]*\\)  *\\([^ ][^ ]*  *[^ ][^ ]*  *[^ ][^ ]*\\) <br>

  *\ <br>

  *\ <br>

\(.*\\)$/\\1 \\3  \\4  |\\5/' -e '/ -> /!s,|\\([^*]*\\)$,|<A HREF=\"\\1\">\\ <br>

1</A <br>

>,' -e '/ -> /!s,|\\(.*\\)\\([*]\\)$,|<A HREF=\"\\1\">\\1</A>\\2,' -e '/ -> <br>

/s,| <br>

\\([^@]*\\)\\(@* -> \\),|<A HREF=\"\\1\">\\1</A>\\2,' -e 's/|//'", <br>

                file ); <br>

            (void) fflush( stdout ); <br>

            system( command ); <br>

            } <br>

        (void) printf( "</PRE>\n<HR>\n<ADDRESS><A HREF=\"%s\">%s</A></ADDRES <br>

S>\n <br>

</BODY> <br>

</HTML>\n", SERVER_URL, SERVER_NAME ); <br>

        } <br>

    else <br>

        { <br>

        do_file: <br>

        fp = fopen( file, "r" ); <br>

        if ( fp == (FILE*) 0 ) <br>

            send_error( 403, "Forbidden", (char*) 0, "File is protected." ); <br>

  <br>

        send_headers( 200, "Ok", (char*) 0, get_mime_type( file ), sb.st_siz <br>



e, s <br>

b.st_mt <br>

ime ); <br>

        while ( ( ich = getc( fp ) ) != EOF ) <br>

            putchar( ich ); <br>

        } <br>

    (void) fflush( stdout ); <br>

    exit( 0 ); <br>

    } <br>

static void <br>

send_error( int status, char* title, char* extra_header, char* text ) <br>

    { <br>

    send_headers( status, title, extra_header, "text/html", -1, -1 ); <br>

    (void) printf( "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n<BODY BGCOLOR=\ <br>

"#cc <br>

9999\"><H4>%d %s</H4>\n", status, title, status, title ); <br>

    (void) printf( "%s\n", text ); <br>

    (void) printf( "<HR>\n<ADDRESS><A HREF=\"%s\">%s</A></ADDRESS>\n</BODY>< <br>

/HTM <br>

L>\n", SERVER_URL, SERVER_NAME ); <br>

    (void) fflush( stdout ); <br>

    exit( 1 ); <br>

    exit( 1 ); <br>

    } <br>

static void <br>

send_headers( int status, char* title, char* extra_header, char* mime_type, <br>

int <br>

length, time_t mod ) <br>

    { <br>

    time_t now; <br>

    char timebuf[100]; <br>

    (void) printf( "%s %d %s\r\n", PROTOCOL, status, title ); <br>

    (void) printf( "Server: %s\r\n", SERVER_NAME ); <br>

    now = time( (time_t*) 0 ); <br>

    (void) strftime( timebuf, sizeof(timebuf), RFC1123FMT, gmtime( &now ) ); <br>

  <br>

    (void) printf( "Date: %s\r\n", timebuf ); <br>

    if ( extra_header != (char*) 0 ) <br>

        (void) printf( "%s\r\n", extra_header ); <br>

    if ( mime_type != (char*) 0 ) <br>

        (void) printf( "Content-Type: %s\r\n", mime_type ); <br>

    if ( length >= 0 ) <br>

        (void) printf( "Content-Length: %d\r\n", length ); <br>

    if ( mod != (time_t) -1 ) <br>

        { <br>

        { <br>

        (void) strftime( timebuf, sizeof(timebuf), RFC1123FMT, gmtime( &mod <br>

) ); <br>

        (void) printf( "Last-Modified: %s\r\n", timebuf ); <br>

        } <br>

    (void) printf( "Connection: close\r\n" ); <br>

    (void) printf( "\r\n" ); <br>

    } <br>

static char* get_mime_type( char* name ) <br>

    { <br>

    char* dot; <br>

    dot = strrchr( name, '.' ); <br>

    if ( dot == (char*) 0 ) <br>

        return "text/plain; charset=iso-8859-1"; <br>

    if ( strcmp( dot, ".html" ) == 0 || strcmp( dot, ".htm" ) == 0 ) <br>

        return "text/html; charset=iso-8859-1"; <br>

    if ( strcmp( dot, ".jpg" ) == 0 || strcmp( dot, ".jpeg" ) == 0 ) <br>

        return "image/jpeg"; <br>

    if ( strcmp( dot, ".gif" ) == 0 ) <br>

        return "image/gif"; <br>

    if ( strcmp( dot, ".png" ) == 0 ) <br>

        return "image/png"; <br>

    if ( strcmp( dot, ".css" ) == 0 ) <br>



        return "text/css"; <br>

    if ( strcmp( dot, ".au" ) == 0 ) <br>

        return "audio/basic"; <br>

    if ( strcmp( dot, ".wav" ) == 0 ) <br>

        return "audio/wav"; <br>

    if ( strcmp( dot, ".avi" ) == 0 ) <br>

        return "video/x-msvideo"; <br>

    if ( strcmp( dot, ".mov" ) == 0 || strcmp( dot, ".qt" ) == 0 ) <br>

        return "video/quicktime"; <br>

    if ( strcmp( dot, ".mpeg" ) == 0 || strcmp( dot, ".mpe" ) == 0 ) <br>

        return "video/mpeg"; <br>

    if ( strcmp( dot, ".vrml" ) == 0 || strcmp( dot, ".wrl" ) == 0 ) <br>

        return "model/vrml"; <br>

    if ( strcmp( dot, ".midi" ) == 0 || strcmp( dot, ".mid" ) == 0 ) <br>

        return "audio/midi"; <br>

    if ( strcmp( dot, ".mp3" ) == 0 ) <br>

        return "audio/mpeg"; <br>

    if ( strcmp( dot, ".pac" ) == 0 ) <br>

        return "application/x-ns-proxy-autoconfig"; <br>

    return "text/plain; charset=iso-8859-1"; <br>

    } <br>

-- <br>



            也许有一天，他再从海上蓬蓬的雨点中升起， <br>

            飞向西来，再形成一道江流，再冲倒两旁的石壁， <br>

            再来寻夹岸的桃花。然而，我不敢说来生，也不敢信来生...... <br>

-- <br>

※ 来源:·UNIX编程 www.tiaozhan.com/unixbbs/·[FROM: 202.114.36.239] <br>

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