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httpd: stop adding our own "Content-type:" to CGI output
This commit is contained in:
Denis Vlasenko
parent
db6a5c3f9e
commit
6998142998
@ -93,6 +93,11 @@
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#include "busybox.h"
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/* amount of buffering in a pipe */
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#ifndef PIPE_BUF
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# define PIPE_BUF 4096
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#endif
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static const char httpdVersion[] = "busybox httpd/1.35 6-Oct-2004";
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static const char default_path_httpd_conf[] = "/etc";
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static const char httpd_conf[] = "httpd.conf";
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@ -106,10 +111,7 @@ static const char home[] = "./";
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// is checked rigorously
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//#define DEBUG 1
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#ifndef DEBUG
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# define DEBUG 0
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#endif
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#define DEBUG 0
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#define MAX_MEMORY_BUFF 8192 /* IO buffer */
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@ -885,8 +887,8 @@ static int sendHeaders(HttpResponseNum responseNum)
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/* emit the current date */
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strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
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len = sprintf(buf,
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"HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
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"Date: %s\r\nConnection: close\r\n",
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"HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
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"Date: %s\r\nConnection: close\r\n",
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responseNum, responseString, mime_type, timeStr);
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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@ -986,7 +988,7 @@ static int sendCgi(const char *url,
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int outFd;
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int firstLine = 1;
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int status;
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size_t post_readed_size, post_readed_idx;
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size_t post_read_size, post_read_idx;
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if (pipe(fromCgi) != 0)
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return 0;
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@ -1000,7 +1002,7 @@ static int sendCgi(const char *url,
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if (!pid) {
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/* child process */
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char *script;
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char *purl = strdup(url);
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char *purl = xstrdup(url);
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char realpath_buff[MAXPATHLEN];
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if (purl == NULL)
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@ -1129,8 +1131,8 @@ static int sendCgi(const char *url,
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/* parent process */
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post_readed_size = 0;
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post_readed_idx = 0;
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post_read_size = 0;
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post_read_idx = 0; /* for gcc */
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inFd = fromCgi[0];
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outFd = toCgi[1];
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close(fromCgi[1]);
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@ -1147,95 +1149,108 @@ static int sendCgi(const char *url,
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FD_ZERO(&readSet);
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FD_ZERO(&writeSet);
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FD_SET(inFd, &readSet);
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if (bodyLen > 0 || post_readed_size > 0) {
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if (bodyLen > 0 || post_read_size > 0) {
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FD_SET(outFd, &writeSet);
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nfound = outFd > inFd ? outFd : inFd;
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if (post_readed_size == 0) {
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if (post_read_size == 0) {
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FD_SET(config->accepted_socket, &readSet);
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if (nfound < config->accepted_socket)
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nfound = config->accepted_socket;
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}
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/* Now wait on the set of sockets! */
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nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
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nfound = select(nfound + 1, &readSet, &writeSet, NULL, NULL);
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} else {
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if (!bodyLen) {
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close(outFd);
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close(outFd); /* no more POST data to CGI */
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bodyLen = -1;
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}
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nfound = select(inFd + 1, &readSet, 0, 0, NULL);
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nfound = select(inFd + 1, &readSet, NULL, NULL, NULL);
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}
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if (nfound <= 0) {
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if (waitpid(pid, &status, WNOHANG) > 0) {
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close(inFd);
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if (DEBUG && WIFEXITED(status))
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bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
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if (DEBUG && WIFSIGNALED(status))
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bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
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break;
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}
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} else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
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count = full_write(outFd, wbuf + post_readed_idx, post_readed_size);
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if (waitpid(pid, &status, WNOHANG) <= 0)
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/* Weird. CGI didn't exit and no fd's
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* are ready, yet select returned?! */
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continue;
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close(inFd);
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if (DEBUG && WIFEXITED(status))
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bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
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if (DEBUG && WIFSIGNALED(status))
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bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
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break;
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}
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if (post_read_size > 0 && FD_ISSET(outFd, &writeSet)) {
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/* Have data from peer and can write to CGI */
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// huh? why full_write? what if we will block?
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// (imagine that CGI does not read its stdin...)
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count = full_write(outFd, wbuf + post_read_idx, post_read_size);
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if (count > 0) {
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post_readed_size -= count;
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post_readed_idx += count;
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if (post_readed_size == 0)
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post_readed_idx = 0;
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post_read_idx += count;
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post_read_size -= count;
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} else {
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post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
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post_read_size = bodyLen = 0; /* broken pipe to CGI */
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}
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} else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) {
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} else if (bodyLen > 0 && post_read_size == 0
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&& FD_ISSET(config->accepted_socket, &readSet)
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) {
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/* We expect data, prev data portion is eaten by CGI
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* and there *is* data to read from the peer
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* (POST data?) */
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count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
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count = safe_read(config->accepted_socket, wbuf, count);
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if (count > 0) {
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post_readed_size += count;
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post_read_size = count;
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post_read_idx = 0;
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bodyLen -= count;
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} else {
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bodyLen = 0; /* closed */
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}
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}
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if (FD_ISSET(inFd, &readSet)) {
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/* There is something to read from CGI */
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int s = config->accepted_socket;
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char *rbuf = config->buf;
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#ifndef PIPE_BUF
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# define PIPESIZE 4096 /* amount of buffering in a pipe */
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#else
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# define PIPESIZE PIPE_BUF
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#endif
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#define PIPESIZE PIPE_BUF
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#if PIPESIZE >= MAX_MEMORY_BUFF
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# error "PIPESIZE >= MAX_MEMORY_BUFF"
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#endif
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/* There is something to read */
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/* NB: was safe_read. If it *has to be* safe_read, */
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/* please explain why in this comment... */
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count = full_read(inFd, rbuf, PIPESIZE);
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if (count == 0)
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break; /* closed */
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if (count > 0) {
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if (firstLine) {
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/* full_read (above) avoids
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* "chopped up into small chunks" syndrome here */
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rbuf[count] = 0;
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/* check to see if the user script added headers */
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if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
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/* there is no "HTTP", do it ourself */
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full_write(s, "HTTP/1.0 200 OK\r\n", 17);
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} /* hmm, maybe 'else if'? */
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if (!strstr(rbuf, "ontent-")) {
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full_write(s, "Content-type: text/plain\r\n\r\n", 28);
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}
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firstLine = 0;
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}
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if (full_write(s, rbuf, count) != count)
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break;
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if (count < 0)
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continue; /* huh, error, why continue?? */
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if (DEBUG)
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fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf);
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if (firstLine) {
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/* full_read (above) avoids
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* "chopped up into small chunks" syndrome here */
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rbuf[count] = '\0';
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/* check to see if the user script added headers */
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#define HTTP_200 "HTTP/1.0 200 OK\r\n\r\n"
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if (memcmp(rbuf, HTTP_200, 4) != 0) {
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/* there is no "HTTP", do it ourself */
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full_write(s, HTTP_200, sizeof(HTTP_200)-1);
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}
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#undef HTTP_200
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/* Example of valid GCI without "Content-type:"
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* echo -en "HTTP/1.0 302 Found\r\n"
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* echo -en "Location: http://www.busybox.net\r\n"
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* echo -en "\r\n"
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*/
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//if (!strstr(rbuf, "ontent-")) {
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// full_write(s, "Content-type: text/plain\r\n\r\n", 28);
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//}
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firstLine = 0;
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}
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}
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}
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if (full_write(s, rbuf, count) != count)
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break;
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if (DEBUG)
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fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf);
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} /* if (FD_ISSET(inFd)) */
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} /* while (1) */
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return 0;
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}
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#endif /* FEATURE_HTTPD_CGI */
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