diff options
Diffstat (limited to 'contrib/package/uhttpd/src/uhttpd-cgi.c')
| -rw-r--r-- | contrib/package/uhttpd/src/uhttpd-cgi.c | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/contrib/package/uhttpd/src/uhttpd-cgi.c b/contrib/package/uhttpd/src/uhttpd-cgi.c index 4342d279e..4889819aa 100644 --- a/contrib/package/uhttpd/src/uhttpd-cgi.c +++ b/contrib/package/uhttpd/src/uhttpd-cgi.c @@ -118,17 +118,20 @@ static char * uh_cgi_header_lookup(struct http_response *res, const char *hdrnam return NULL; } -static void uh_cgi_error_500(struct client *cl, struct http_request *req, const char *message) +static int uh_cgi_error_500(struct client *cl, struct http_request *req, const char *message) { - uh_http_sendf(cl, NULL, + if( uh_http_sendf(cl, NULL, "HTTP/%.1f 500 Internal Server Error\r\n" "Content-Type: text/plain\r\n%s\r\n", req->version, (req->version > 1.0) ? "Transfer-Encoding: chunked\r\n" : "" - ); + ) >= 0 + ) { + return uh_http_send(cl, req, message, -1); + } - uh_http_send(cl, req, message, -1); + return -1; } @@ -348,6 +351,9 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf memset(hdr, 0, sizeof(hdr)); +#define ensure(x) \ + do { if( x < 0 ) goto out; } while(0) + /* I/O loop, watch our pipe ends and dispatch child reads/writes from/to socket */ while( 1 ) { @@ -390,7 +396,7 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf } /* there is no more post data, close pipe to child's stdin */ - else + else if( content_length > -1 ) { close(wfd[1]); content_length = -1; @@ -423,47 +429,49 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf if( (res = uh_cgi_header_parse(hdr, hdrlen, &hdroff)) != NULL ) { /* write status */ - uh_http_sendf(cl, NULL, "HTTP/%.1f %03d %s\r\n", - req->version, res->statuscode, res->statusmsg); + ensure(uh_http_sendf(cl, NULL, + "HTTP/%.1f %03d %s\r\n", + req->version, res->statuscode, + res->statusmsg)); /* add Content-Type if no Location or Content-Type */ if( !uh_cgi_header_lookup(res, "Location") && !uh_cgi_header_lookup(res, "Content-Type") ) { - uh_http_send(cl, NULL, - "Content-Type: text/plain\r\n", -1); + ensure(uh_http_send(cl, NULL, + "Content-Type: text/plain\r\n", -1)); } /* if request was HTTP 1.1 we'll respond chunked */ if( (req->version > 1.0) && !uh_cgi_header_lookup(res, "Transfer-Encoding") ) { - uh_http_send(cl, NULL, - "Transfer-Encoding: chunked\r\n", -1); + ensure(uh_http_send(cl, NULL, + "Transfer-Encoding: chunked\r\n", -1)); } /* write headers from CGI program */ foreach_header(i, res->headers) { - uh_http_sendf(cl, NULL, "%s: %s\r\n", - res->headers[i], res->headers[i+1]); + ensure(uh_http_sendf(cl, NULL, "%s: %s\r\n", + res->headers[i], res->headers[i+1])); } /* terminate header */ - uh_http_send(cl, NULL, "\r\n", -1); + ensure(uh_http_send(cl, NULL, "\r\n", -1)); /* push out remaining head buffer */ if( hdroff < hdrlen ) - uh_http_send(cl, req, &hdr[hdroff], hdrlen - hdroff); + ensure(uh_http_send(cl, req, &hdr[hdroff], hdrlen - hdroff)); } /* ... failed and head buffer exceeded */ else if( hdrlen >= sizeof(hdr) ) { - uh_cgi_error_500(cl, req, - "The CGI program generated an invalid response:\n\n"); + ensure(uh_cgi_error_500(cl, req, + "The CGI program generated an invalid response:\n\n")); - uh_http_send(cl, req, hdr, hdrlen); + ensure(uh_http_send(cl, req, hdr, hdrlen)); } /* ... failed but free buffer space, try again */ @@ -474,7 +482,7 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf /* push out remaining read buffer */ if( bufoff < buflen ) - uh_http_send(cl, req, &buf[bufoff], buflen - bufoff); + ensure(uh_http_send(cl, req, &buf[bufoff], buflen - bufoff)); header_sent = 1; continue; @@ -482,7 +490,7 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf /* headers complete, pass through buffer to socket */ - uh_http_send(cl, req, buf, buflen); + ensure(uh_http_send(cl, req, buf, buflen)); } /* looks like eof from child */ @@ -502,19 +510,19 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf * build the required headers here. */ - uh_http_sendf(cl, NULL, + ensure(uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n" "Content-Type: text/plain\r\n" "%s\r\n", req->version, (req->version > 1.0) ? "Transfer-Encoding: chunked\r\n" : "" - ); + )); - uh_http_send(cl, req, hdr, hdrlen); + ensure(uh_http_send(cl, req, hdr, hdrlen)); } /* send final chunk if we're in chunked transfer mode */ - uh_http_send(cl, req, "", 0); + ensure(uh_http_send(cl, req, "", 0)); break; } } @@ -523,13 +531,14 @@ void uh_cgi_request(struct client *cl, struct http_request *req, struct path_inf /* no activity for 15 seconds... looks dead */ else { - uh_http_sendhf(cl, 504, "Gateway Timeout", - "The CGI script took too long to produce a response"); + ensure(uh_http_sendhf(cl, 504, "Gateway Timeout", + "The CGI script took too long to produce a response")); break; } } + out: close(rfd[0]); close(wfd[1]); |