📄 shttpd.c
字号:
/* code from micro_httpd */#include <unistd.h>#include <stdlib.h>#include <stdio.h>#include <string.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/time.h>#define SERVER_NAME "shttpd"#define SERVER_URL "http://www.uu55.org/"#define PROTOCOL "HTTP/1.0"#define RFC1123FMT "%a, %d %b %Y %H:%M:%S GMT"/* Forwards. */static void send_error( int status, char* title, char* extra_header, char* text );static void send_headers( int status, char* title, char* extra_header, char* mime_type, off_t length, time_t mod );static char* get_mime_type( char* name );intmain( int argc, char** argv ) { char line[10000], method[10000], path[10000], protocol[10000], idx[20000], location[20000], command[20000]; char* file; size_t len; int ich; struct stat sb; FILE* fp; if ( argc != 2 ) send_error( 500, "Internal Error", (char*) 0, "Config error - no dir specified." ); if ( chdir( argv[1] ) < 0 ) send_error( 500, "Internal Error", (char*) 0, "Config error - couldn't chdir()." ); if ( fgets( line, sizeof(line), stdin ) == (char*) 0 ) send_error( 400, "Bad Request", (char*) 0, "No request found." ); if ( sscanf( line, "%[^ ] %[^ ] %[^ ]", method, path, protocol ) != 3 ) send_error( 400, "Bad Request", (char*) 0, "Can't parse request." ); while ( fgets( line, sizeof(line), stdin ) != (char*) 0 ) { if ( strcmp( line, "\n" ) == 0 || strcmp( line, "\r\n" ) == 0 ) break; } if ( strcasecmp( method, "get" ) != 0 ) send_error( 501, "Not Implemented", (char*) 0, "That method is not implemented." ); if ( path[0] != '/' ) send_error( 400, "Bad Request", (char*) 0, "Bad filename." ); file = &(path[1]); if ( file[0] == '\0' ) file = "./"; len = strlen( file ); if ( file[0] == '/' || strcmp( file, ".." ) == 0 || strncmp( file, "../", 3 ) == 0 || strstr( file, "/../" ) != (char*) 0 || strcmp( &(file[len-3]), "/.." ) == 0 ) send_error( 400, "Bad Request", (char*) 0, "Illegal filename." ); if ( stat( file, &sb ) < 0 ) send_error( 404, "Not Found", (char*) 0, "File not found." ); if ( S_ISDIR( sb.st_mode ) ) { if ( file[len-1] != '/' ) { (void) snprintf( location, sizeof(location), "Location: %s/", path ); send_error( 302, "Found", location, "Directories must end with a slash." ); } (void) snprintf( idx, sizeof(idx), "%sindex.html", file ); if ( stat( idx, &sb ) >= 0 ) { file = idx; goto do_file; } send_headers( 200, "Ok", (char*) 0, "text/html", -1, sb.st_mtime ); (void) printf( "<HTML><HEAD><TITLE>Index of %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#99cc99\"><H4>Index of %s</H4>\n<PRE>\n", file, file ); if ( strchr( file, '\'' ) == (char*) 0 ) { (void) snprintf( command, sizeof(command), "ls -lgF '%s' | tail +2 | sed -e 's/^\\([^ ][^ ]*\\)\\( *[^ ][^ ]* *[^ ][^ ]* *[^ ][^ ]*\\)\\( *[^ ][^ ]*\\) *\\([^ ][^ ]* *[^ ][^ ]* *[^ ][^ ]*\\) *\\(.*\\)$/\\1 \\3 \\4 |\\5/' -e '/ -> /!s,|\\([^*]*\\)$,|<A HREF=\"\\1\">\\1</A>,' -e '/ -> /!s,|\\(.*\\)\\([*]\\)$,|<A HREF=\"\\1\">\\1</A>\\2,' -e '/ -> /s,|\\([^@]*\\)\\(@* -> \\),|<A HREF=\"\\1\">\\1</A>\\2,' -e 's/|//'", file ); (void) fflush( stdout ); system( command ); } (void) printf( "</PRE>\n<HR>\n<ADDRESS><A HREF=\"%s\">%s</A></ADDRESS>\n</BODY></HTML>\n", SERVER_URL, SERVER_NAME ); } else { do_file: fp = fopen( file, "r" ); if ( fp == (FILE*) 0 ) send_error( 403, "Forbidden", (char*) 0, "File is protected." ); send_headers( 200, "Ok", (char*) 0, get_mime_type( file ), sb.st_size, sb.st_mtime ); while ( ( ich = getc( fp ) ) != EOF ) putchar( ich ); } (void) fflush( stdout ); exit( 0 ); }static voidsend_error( int status, char* title, char* extra_header, char* text ) { send_headers( status, title, extra_header, "text/html", -1, -1 ); (void) printf( "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#cc9999\"><H4>%d %s</H4>\n", status, title, status, title ); (void) printf( "%s\n", text ); (void) printf( "<HR>\n<ADDRESS><A HREF=\"%s\">%s</A></ADDRESS>\n</BODY></HTML>\n", SERVER_URL, SERVER_NAME ); (void) fflush( stdout ); exit( 1 ); }static voidsend_headers( int status, char* title, char* extra_header, char* mime_type, off_t length, time_t mod ) { time_t now; char timebuf[100]; (void) printf( "%s %d %s\r\n", PROTOCOL, status, title ); (void) printf( "Server: %s\r\n", SERVER_NAME ); now = time( (time_t*) 0 ); (void) strftime( timebuf, sizeof(timebuf), RFC1123FMT, gmtime( &now ) ); (void) printf( "Date: %s\r\n", timebuf ); if ( extra_header != (char*) 0 ) (void) printf( "%s\r\n", extra_header ); if ( mime_type != (char*) 0 ) (void) printf( "Content-Type: %s\r\n", mime_type ); if ( length >= 0 ) (void) printf( "Content-Length: %lld\r\n", (int64_t) length ); if ( mod != (time_t) -1 ) { (void) strftime( timebuf, sizeof(timebuf), RFC1123FMT, gmtime( &mod ) ); (void) printf( "Last-Modified: %s\r\n", timebuf ); } (void) printf( "Connection: close\r\n" ); (void) printf( "\r\n" ); }static char* get_mime_type( char* name ) { char* dot; dot = strrchr( name, '.' ); if ( dot == (char*) 0 ) return "text/plain; charset=iso-8859-1"; if ( strcmp( dot, ".html" ) == 0 || strcmp( dot, ".htm" ) == 0 ) return "text/html; charset=iso-8859-1"; if ( strcmp( dot, ".jpg" ) == 0 || strcmp( dot, ".jpeg" ) == 0 ) return "image/jpeg"; if ( strcmp( dot, ".gif" ) == 0 ) return "image/gif"; if ( strcmp( dot, ".png" ) == 0 ) return "image/png"; if ( strcmp( dot, ".css" ) == 0 ) return "text/css"; if ( strcmp( dot, ".au" ) == 0 ) return "audio/basic"; if ( strcmp( dot, ".wav" ) == 0 ) return "audio/wav"; if ( strcmp( dot, ".avi" ) == 0 ) return "video/x-msvideo"; if ( strcmp( dot, ".mov" ) == 0 || strcmp( dot, ".qt" ) == 0 ) return "video/quicktime"; if ( strcmp( dot, ".mpeg" ) == 0 || strcmp( dot, ".mpe" ) == 0 ) return "video/mpeg"; if ( strcmp( dot, ".vrml" ) == 0 || strcmp( dot, ".wrl" ) == 0 ) return "model/vrml"; if ( strcmp( dot, ".midi" ) == 0 || strcmp( dot, ".mid" ) == 0 ) return "audio/midi"; if ( strcmp( dot, ".mp3" ) == 0 ) return "audio/mpeg"; if ( strcmp( dot, ".pac" ) == 0 ) return "application/x-ns-proxy-autoconfig"; return "text/plain; charset=iso-8859-1"; }⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -