diff options
Diffstat (limited to 'networking')
-rw-r--r-- | networking/httpd.c | 75 |
1 files changed, 46 insertions, 29 deletions
diff --git a/networking/httpd.c b/networking/httpd.c index 81660b2..32ecde0 100644 --- a/networking/httpd.c +++ b/networking/httpd.c @@ -299,7 +299,7 @@ static int scan_ip(const char **ep, unsigned *ip, unsigned char endc) for (j = 0; j < 4; j++) { unsigned octet; - if ((*p < '0' || *p > '9') && (*p != '/' || j == 0) && *p != 0) + if ((*p < '0' || *p > '9') && (*p != '/' || j == 0) && *p != '\0') return -auto_mask; octet = 0; while (*p >= '0' && *p <= '9') { @@ -311,15 +311,15 @@ static int scan_ip(const char **ep, unsigned *ip, unsigned char endc) } if (*p == '.') p++; - if (*p != '/' && *p != 0) + if (*p != '/' && *p != '\0') auto_mask += 8; *ip = ((*ip) << 8) | octet; } - if (*p != 0) { + if (*p != '\0') { if (*p != endc) return -auto_mask; p++; - if (*p == 0) + if (*p == '\0') return -auto_mask; } *ep = p; @@ -782,6 +782,17 @@ static int openServer(void) #endif /* + * Log the connection closure and exit. + */ +static void log_and_exit(void) ATTRIBUTE_NORETURN; +static void log_and_exit(void) +{ + if (verbose > 2) + bb_error_msg("closed"); + _exit(xfunc_error_retval); +} + +/* * Create and send HTTP response headers. * The arguments are combined and sent as one write operation. Note that * IE will puke big-time if the headers are not sent in one packet and the @@ -789,7 +800,7 @@ static int openServer(void) * responseNum - the result code to send. * Return result of write(). */ -static int sendHeaders(HttpResponseNum responseNum) +static void send_headers(HttpResponseNum responseNum) { static const char RFC1123FMT[] ALIGN1 = "%a, %d %b %Y %H:%M:%S GMT"; @@ -841,8 +852,8 @@ static int sendHeaders(HttpResponseNum responseNum) len += sprintf(iobuf + len, "Last-Modified: %s\r\n%s %"OFF_FMT"d\r\n", tmp_str, "Content-length:", ContentLength); } - strcat(iobuf, "\r\n"); - len += 2; + iobuf[len++] = '\r'; + iobuf[len++] = '\n'; if (infoString) { len += sprintf(iobuf + len, "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n" @@ -855,14 +866,18 @@ static int sendHeaders(HttpResponseNum responseNum) i = accepted_socket; if (i == 0) i++; /* write to fd #1 in inetd mode */ - return full_write(i, iobuf, len); + if (full_write(i, iobuf, len) != len) { + if (verbose > 1) + bb_perror_msg("error"); + log_and_exit(); + } } static void send_headers_and_exit(HttpResponseNum responseNum) ATTRIBUTE_NORETURN; static void send_headers_and_exit(HttpResponseNum responseNum) { - sendHeaders(responseNum); - _exit(0); + send_headers(responseNum); + log_and_exit(); } /* @@ -945,8 +960,10 @@ static void send_cgi_and_exit( #else pid = fork(); #endif - if (pid < 0) - _exit(0); + if (pid < 0) { + /* TODO: log perror? */ + log_and_exit(); + } if (!pid) { /* child process */ @@ -1054,9 +1071,6 @@ static void send_cgi_and_exit( *script = '\0'; /* chdiring to script's dir */ if (chdir(fullpath) == 0) { - /* Now run the program. If it fails, - * use _exit() so no destructors - * get called and make a mess. */ #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR char *interpr = NULL; char *suffix = strrchr(purl, '.'); @@ -1083,8 +1097,7 @@ static void send_cgi_and_exit( /* send to stdout * (we are CGI here, our stdout is pumped to the net) */ accepted_socket = 1; - sendHeaders(HTTP_NOT_FOUND); - _exit(242); + send_headers_and_exit(HTTP_NOT_FOUND); } /* end child */ /* parent process */ @@ -1248,7 +1261,7 @@ static void send_cgi_and_exit( fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf); } /* if (FD_ISSET(fromCgi.rd)) */ } /* while (1) */ - _exit(0); + log_and_exit(); } #endif /* FEATURE_HTTPD_CGI */ @@ -1329,14 +1342,14 @@ static void send_file_and_exit(const char *url) send_headers_and_exit(HTTP_NOT_FOUND); } - sendHeaders(HTTP_OK); + send_headers(HTTP_OK); fd = accepted_socket; if (fd == 0) fd++; /* write to fd #1 in inetd mode */ /* If you want to know about EPIPE below * (happens if you abort downloads from local httpd): */ - /* signal(SIGPIPE, SIG_IGN); */ + signal(SIGPIPE, SIG_IGN); #if ENABLE_FEATURE_HTTPD_USE_SENDFILE do { @@ -1348,7 +1361,7 @@ static void send_file_and_exit(const char *url) goto fin; } } while (count > 0); - _exit(0); + log_and_exit(); fallback: #endif @@ -1363,12 +1376,12 @@ static void send_file_and_exit(const char *url) #endif if (count < 0 && verbose > 1) bb_perror_msg("error"); - _exit(0); + log_and_exit(); } static int checkPermIP(void) { - Htaccess_IP * cur; + Htaccess_IP *cur; /* This could stand some work */ for (cur = ip_a_d; cur; cur = cur->next) { @@ -1517,8 +1530,10 @@ static void handle_incoming_and_exit(void) sigaction(SIGALRM, &sa, NULL); alarm(HEADER_READ_TIMEOUT); - if (!get_line()) - _exit(0); /* EOF or error or empty line */ + if (!get_line()) { + /* EOF or error or empty line */ + send_headers_and_exit(HTTP_BAD_REQUEST); + } /* Determine type of request (GET/POST) */ purl = strpbrk(iobuf, " \t"); @@ -1644,7 +1659,7 @@ static void handle_incoming_and_exit(void) if (prequest != request_GET) { test = iobuf + sizeof("Content-length:") - 1; if (!test[0]) - _exit(0); + send_headers_and_exit(HTTP_BAD_REQUEST); errno = 0; /* not using strtoul: it ignores leading minus! */ length = strtol(test, &test, 10); @@ -1652,7 +1667,7 @@ static void handle_incoming_and_exit(void) /* so we check for negative or too large values in one go: */ /* (long -> ulong conv caused negatives to be seen as > INT_MAX) */ if (test[0] || errno || length > INT_MAX) - _exit(0); + send_headers_and_exit(HTTP_BAD_REQUEST); } } else if (STRNCASECMP(iobuf, "Cookie:") == 0) { cookie = strdup(skip_whitespace(iobuf + sizeof("Cookie:")-1)); @@ -1682,7 +1697,7 @@ static void handle_incoming_and_exit(void) } /* while extra header reading */ } - /* We read everything, disable peer timeout */ + /* We read headers, disable peer timeout */ alarm(0); if (strcmp(bb_basename(url), httpd_conf) == 0 || ip_allowed == 0) { @@ -1779,7 +1794,7 @@ static void handle_incoming_and_exit(void) } while (retval > 0 && read(accepted_socket, iobuf, sizeof(iobuf) > 0)); shutdown(accepted_socket, SHUT_RD); close(accepted_socket); - _exit(0); + log_and_exit(); #endif } @@ -2003,12 +2018,14 @@ int httpd_main(int argc, char **argv) #else parse_conf(default_path_httpd_conf, FIRST_PARSE); #endif + xfunc_error_retval = 0; if (opt & OPT_INETD) mini_httpd_inetd(); if (!(opt & OPT_FOREGROUND)) bb_daemonize(0); /* don't change current directory */ mini_httpd(server_socket); /* never returns */ #else + xfunc_error_retval = 0; mini_httpd_inetd(); /* never returns */ /* return 0; */ #endif |