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https://github.com/sheumann/hush.git
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httpd: reinstate (much lighter) paranoid connection close code
allegedly needed for some versions of IE. +45 bytes.
This commit is contained in:
Denis Vlasenko
parent
37c3316fd7
commit
921799da4e
@ -104,7 +104,7 @@
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# define PIPE_BUF 4096
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#endif
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#define MAX_MEMORY_BUF 8192 /* IO buffer */
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#define IOBUF_SIZE 8192 /* IO buffer */
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#define HEADER_READ_TIMEOUT 60
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@ -163,7 +163,7 @@ struct globals {
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#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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Htaccess *script_i; /* config script interpreters */
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#endif
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char *iobuf; /* [MAX_MEMORY_BUF] */
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char *iobuf; /* [IOBUF_SIZE] */
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#define hdr_buf bb_common_bufsiz1
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char *hdr_ptr;
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int hdr_cnt;
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@ -717,19 +717,6 @@ static char *decodeString(char *orig, int option_d)
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return orig;
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}
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#if ENABLE_FEATURE_HTTPD_CGI
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/*
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* setenv helpers
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*/
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static void setenv1(const char *name, const char *value)
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{
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if (!value)
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value = "";
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setenv(name, value, 1);
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}
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#endif
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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/*
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* Decode a base64 data stream as per rfc1521.
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@ -797,6 +784,13 @@ static int openServer(void)
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static void log_and_exit(void) ATTRIBUTE_NORETURN;
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static void log_and_exit(void)
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{
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/* Paranoia. IE said to be buggy. It may send some extra data
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* or be confused by us just exiting without SHUT_WR. Oh well. */
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shutdown(1, SHUT_WR);
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ndelay_on(0);
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while (read(0, iobuf, IOBUF_SIZE) > 0)
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continue;
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if (verbose > 2)
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bb_error_msg("closed");
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_exit(xfunc_error_retval);
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@ -915,13 +909,18 @@ static int get_line(void)
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iobuf[count] = '\0';
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return count;
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}
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if (count < (MAX_MEMORY_BUF - 1)) /* check overflow */
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if (count < (IOBUF_SIZE - 1)) /* check overflow */
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count++;
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}
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return count;
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}
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#if ENABLE_FEATURE_HTTPD_CGI
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static void setenv1(const char *name, const char *value)
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{
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setenv(name, value ? value : "", 1);
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}
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/*
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* Spawn CGI script, forward CGI's stdin/out <=> network
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*
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@ -1192,8 +1191,8 @@ static void send_cgi_and_exit(
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}
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#define PIPESIZE PIPE_BUF
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#if PIPESIZE >= MAX_MEMORY_BUF
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# error "PIPESIZE >= MAX_MEMORY_BUF"
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#if PIPESIZE >= IOBUF_SIZE
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# error "PIPESIZE >= IOBUF_SIZE"
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#endif
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if (FD_ISSET(fromCgi.rd, &readSet)) {
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/* There is something to read from CGI */
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@ -1363,7 +1362,7 @@ static void send_file_and_exit(const char *url)
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fallback:
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#endif
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while ((count = safe_read(f, iobuf, MAX_MEMORY_BUF)) > 0) {
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while ((count = safe_read(f, iobuf, IOBUF_SIZE)) > 0) {
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ssize_t n = count;
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count = full_write(1, iobuf, count);
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if (count != n)
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@ -1455,12 +1454,13 @@ static int checkPerm(const char *path, const char *request)
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char *pp;
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if (strncmp(p, request, u - request) != 0) {
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/* user uncompared */
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/* user doesn't match */
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continue;
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}
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pp = strchr(p, ':');
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if (pp && pp[1] == '$' && pp[2] == '1' &&
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pp[3] == '$' && pp[4]) {
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if (pp && pp[1] == '$' && pp[2] == '1'
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&& pp[3] == '$' && pp[4]
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) {
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pp++;
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cipher = pw_encrypt(u+1, pp);
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if (strcmp(cipher, pp) == 0)
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@ -1474,7 +1474,7 @@ static int checkPerm(const char *path, const char *request)
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set_remoteuser_var:
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remoteuser = strdup(request);
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if (remoteuser)
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remoteuser[(u - request)] = '\0';
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remoteuser[u - request] = '\0';
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return 1; /* Ok */
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}
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/* unauthorized */
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@ -1521,7 +1521,7 @@ static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
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/* Allocation of iobuf is postponed until now
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* (IOW, server process doesn't need to waste 8k) */
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iobuf = xmalloc(MAX_MEMORY_BUF);
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iobuf = xmalloc(IOBUF_SIZE);
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rmt_ip = 0;
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if (fromAddr->sa.sa_family == AF_INET) {
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@ -1779,35 +1779,6 @@ static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
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*/
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send_file_and_exit(tptr);
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#if 0 /* Is this needed? Why? */
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if (DEBUG)
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fprintf(stderr, "closing socket\n");
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#if ENABLE_FEATURE_HTTPD_CGI
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free(cookie);
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free(content_type);
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free(referer);
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referer = NULL;
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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free(remoteuser);
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remoteuser = NULL;
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#endif
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#endif
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/* Properly wait for remote to closed */
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int retval;
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shutdown(1, SHUT_WR);
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do {
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fd_set s_fd;
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struct timeval tv;
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FD_ZERO(&s_fd);
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FD_SET(0, &s_fd);
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tv.tv_sec = 2;
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tv.tv_usec = 0;
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retval = select(1, &s_fd, NULL, NULL, &tv);
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} while (retval > 0 && read(0, iobuf, sizeof(iobuf) > 0));
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shutdown(0, SHUT_RD);
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log_and_exit();
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#endif
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}
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/*
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@ -1896,7 +1867,7 @@ static void mini_httpd_nommu(int server_socket, int argc, char **argv)
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/* Run a copy of ourself in inetd mode */
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re_exec(argv_copy);
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}
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/* parent, or fork failed */
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/* parent, or vfork failed */
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close(n);
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} /* while (1) */
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/* never reached */
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