Browse Source
- rewrite fcgi-responder as standalone app fcgi-responder is now a minimal, standalone FastCGI server for tests - remove dependency on fcgi-devel package - merge fcgi-auth into fcgi-respondermaster
16 changed files with 434 additions and 216 deletions
@ -1,30 +0,0 @@ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#ifdef HAVE_FASTCGI_FASTCGI_H |
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#include <fastcgi/fcgi_stdio.h> |
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#else |
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#include <fcgi_stdio.h> |
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#endif |
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#include <stdlib.h> |
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#include <string.h> |
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|
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int main (void) { |
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|
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while (FCGI_Accept() >= 0) { |
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|
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/* Status: 200 OK to allow access is implied
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* if Status header is not included in response */ |
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char *p = getenv("QUERY_STRING"); |
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if (p != NULL && 0 == strcmp(p, "var")) { |
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printf("Variable-X-LIGHTTPD-FCGI-AUTH: LighttpdTestContent\r\n"); |
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} else if (p == NULL || 0 != strcmp(p, "ok")) { |
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printf("Status: 403 Forbidden\r\n"); |
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} |
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printf("\r\n"); |
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} |
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return 0; |
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} |
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@ -1,56 +1,378 @@ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#ifdef HAVE_FASTCGI_FASTCGI_H |
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#include <fastcgi/fcgi_stdio.h> |
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#else |
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#include <fcgi_stdio.h> |
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#endif |
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/*
|
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* simple and trivial FastCGI server w/ hard-coded results for use in unit tests |
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* - processes a single FastCGI request at a time (serially) |
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* - listens on FCGI_LISTENSOCK_FILENO |
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* (socket on FCGI_LISTENSOCK_FILENO must be set up by invoker) |
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* expects to be started w/ listening socket already on FCGI_LISTENSOCK_FILENO |
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* - expect recv data for request headers every 10ms or less |
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* - no read timeouts for request body; might block reading request body |
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* - no write timeouts; might block writing response |
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* |
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* Copyright(c) 2020 Glenn Strauss gstrauss()gluelogic.com All rights reserved |
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* License: BSD 3-clause (same as lighttpd) |
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*/ |
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|
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <assert.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <limits.h> |
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#include <poll.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <stdio.h> |
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#include <stdint.h> |
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#include <string.h> |
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#include <unistd.h> |
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|
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#ifndef MSG_DONTWAIT |
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#define MSG_DONTWAIT 0 |
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#endif |
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#include "../src/compat/fastcgi.h" |
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static int finished; |
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static unsigned char buf[65536]; |
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static void |
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fcgi_header (FCGI_Header * const header, const unsigned char type, const int request_id, const int contentLength, const unsigned char paddingLength) |
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{ |
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/*force_assert(contentLength <= FCGI_MAX_LENGTH);*/ |
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header->version = FCGI_VERSION_1; |
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header->type = type; |
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header->requestIdB1 = (request_id >> 8) & 0xff; |
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header->requestIdB0 = request_id & 0xff; |
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header->contentLengthB1 = (contentLength >> 8) & 0xff; |
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header->contentLengthB0 = contentLength & 0xff; |
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header->paddingLength = paddingLength; |
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header->reserved = 0; |
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} |
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static void |
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fcgi_unknown_type_rec (FCGI_UnknownTypeRecord * const rec, const int req_id, const unsigned char type) |
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{ |
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fcgi_header(&rec->header, FCGI_UNKNOWN_TYPE, req_id, sizeof(rec->header), 0); |
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memset(&rec->body.reserved, 0, sizeof(rec->body.reserved)); |
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rec->body.type = type; |
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} |
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static void |
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fcgi_end_request_rec (FCGI_EndRequestRecord * const rec, const int req_id, const uint32_t appStatus, const unsigned char protocolStatus) |
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{ |
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fcgi_header(&rec->header, FCGI_END_REQUEST, req_id, sizeof(rec->header), 0); |
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rec->body.appStatusB3 = (appStatus >> 24) & 0xff; |
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rec->body.appStatusB2 = (appStatus >> 16) & 0xff; |
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rec->body.appStatusB1 = (appStatus >> 8) & 0xff; |
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rec->body.appStatusB0 = appStatus & 0xff; |
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rec->body.protocolStatus = protocolStatus; |
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rec->body.reserved[0] = 0; |
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rec->body.reserved[1] = 0; |
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rec->body.reserved[2] = 0; |
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} |
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static int |
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fcgi_puts (const int req_id, const char * const str, size_t len, FILE * const stream) |
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{ |
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if (NULL == str) return -1; |
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FCGI_Header header; |
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for (size_t offset = 0, part; offset != len; offset += part) { |
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part = len - offset > FCGI_MAX_LENGTH ? FCGI_MAX_LENGTH : len - offset; |
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fcgi_header(&header, FCGI_STDOUT, req_id, part, 0); |
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if (1 != fwrite(&header, sizeof(header), 1, stream)) |
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return -1; |
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if (part != fwrite(str+offset, 1, part, stream)) |
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return -1; |
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} |
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return 0; |
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} |
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static const char * |
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fcgi_getenv(const unsigned char * const r, const uint32_t rlen, const char * const name, int nlen, int *len) |
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{ |
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/* simple search;
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* if many lookups are done, then should use more efficient data structure*/ |
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for (uint32_t i = 0; i < rlen; ) { |
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int klen = r[i]; |
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if (!(r[i] & 0x80)) |
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++i; |
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else { |
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klen = ((r[i] & ~0x80)<<24) | (r[i+1]<<16) | (r[i+2]<<8) | r[i+3]; |
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i += 4; |
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} |
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int vlen = r[i]; |
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if (!(r[i] & 0x80)) |
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++i; |
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else { |
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vlen = ((r[i] & ~0x80)<<24) | (r[i+1]<<16) | (r[i+2]<<8) | r[i+3]; |
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i += 4; |
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} |
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if (klen == nlen && 0 == memcmp(r+i, name, klen)) { |
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*len = vlen; |
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return (const char *)r+i+klen; |
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} |
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i += klen + vlen; |
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} |
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char s[256]; |
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if (nlen > (int)sizeof(s)-1) |
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return NULL; |
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memcpy(s, name, nlen); |
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s[nlen] = '\0'; |
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char *e = getenv(s); |
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if (e) *len = strlen(e); |
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return e; |
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} |
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static int |
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fcgi_process_params (FILE * const stream, int req_id, int role, unsigned char * const r, uint32_t rlen) |
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{ |
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const char *p = NULL; |
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int len; |
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/* (FCGI_STDIN currently ignored in these FastCGI unit test responses, so
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* generate response here based on query string values (indicating test) */ |
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const char *cdata = NULL; |
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if (NULL != (p = fcgi_getenv(r, rlen, "QUERY_STRING", 12, &len))) { |
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if (2 == len && 0 == memcmp(p, "lf", 2)) |
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cdata = "Status: 200 OK\n\n"; |
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else if (4 == len && 0 == memcmp(p, "crlf", 4)) |
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cdata = "Status: 200 OK\r\n\r\n"; |
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else if (7 == len && 0 == memcmp(p, "slow-lf", 7)) { |
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cdata = "Status: 200 OK\n"; |
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if (0 != fcgi_puts(req_id, cdata, strlen(cdata), stream)) |
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return -1; |
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fflush(stdout); |
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cdata = "\n"; |
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} |
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else if (9 == len && 0 == memcmp(p, "slow-crlf", 9)) { |
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cdata = "Status: 200 OK\r\n"; |
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if (0 != fcgi_puts(req_id, cdata, strlen(cdata), stream)) |
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return -1; |
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fflush(stdout); |
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cdata = "\r\n"; |
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} |
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else if (10 == len && 0 == memcmp(p, "die-at-end", 10)) { |
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cdata = "Status: 200 OK\r\n\r\n"; |
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finished = 1; |
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} |
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else if (role == FCGI_AUTHORIZER |
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&& len >= 5 && 0 == memcmp(p, "auth-", 5)) { |
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if (7 == len && 0 == memcmp(p, "auth-ok", 7)) |
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cdata = "Status: 200 OK\r\n\r\n"; |
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else if (8 == len && 0 == memcmp(p, "auth-var", 8)) { |
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/* Status: 200 OK to allow access is implied
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* if Status header is not included in response */ |
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cdata = "Variable-X-LIGHTTPD-FCGI-AUTH: " |
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"LighttpdTestContent\r\n\r\n"; |
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p = NULL; |
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} |
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else { |
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cdata = "Status: 403 Forbidden\r\n\r\n"; |
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p = NULL; |
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} |
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} |
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else |
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cdata = "Status: 200 OK\r\n\r\n"; |
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} |
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else { |
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cdata = "Status: 500 Internal Foo\r\n\r\n"; |
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p = NULL; |
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} |
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if (cdata && 0 != fcgi_puts(req_id, cdata, strlen(cdata), stream)) |
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return -1; |
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if (NULL == p) |
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cdata = NULL; |
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else if (9 == len && 0 == memcmp(p, "path_info", 9)) |
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cdata = fcgi_getenv(r, rlen, "PATH_INFO", 9, &len); |
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else if (11 == len && 0 == memcmp(p, "script_name", 11)) |
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cdata = fcgi_getenv(r, rlen, "SCRIPT_NAME", 11, &len); |
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else if (len > 4 && 0 == memcmp(p, "env=", 4)) |
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cdata = fcgi_getenv(r, rlen, p+4, len-4, &len); |
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else if (8 == len && 0 == memcmp(p, "auth-var", 8)) |
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cdata = fcgi_getenv(r, rlen, "X_LIGHTTPD_FCGI_AUTH", 20, &len); |
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else { |
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cdata = "test123"; |
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len = sizeof("test123")-1; |
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} |
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if (cdata && 0 != fcgi_puts(req_id, cdata, (size_t)len, stream)) |
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return -1; |
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/*(XXX: always sending appStatus 0)*/ |
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FCGI_EndRequestRecord endrec; |
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fcgi_end_request_rec(&endrec, req_id, 0, FCGI_REQUEST_COMPLETE); |
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if (1 != fwrite(&endrec, sizeof(endrec), 1, stream)) |
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return -1; /* error writing FCGI_END_REQUEST; ignore */ |
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return -2; /* done */ |
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} |
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static int |
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fcgi_dispatch_packet (FILE *stream, ssize_t offset, uint32_t len) |
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{ |
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FCGI_Header * const h = (FCGI_Header *)(buf+offset); |
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int req_id = (h->requestIdB1 << 8) | h->requestIdB0; |
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int type = h->type; |
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if (type > FCGI_MAXTYPE) { |
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FCGI_UnknownTypeRecord unkrec; |
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fcgi_unknown_type_rec(&unkrec, req_id, type); |
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if (1 != fwrite(&unkrec, sizeof(unkrec), 1, stream)) |
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return -1; |
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return 0; |
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} |
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if (0 == req_id) { |
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/* not implemented: FCGI_GET_VALUES
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* FCGI_GET_VALUES_RESULT |
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* FCGI_MAX_CONNS: 1 |
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* FCGI_MAX_REQS: 1 |
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* FCGI_MPXS_CONNS: 0 |
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* ... |
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*/ |
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return 0; |
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} |
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/* XXX: save role from FCGI_BEGIN_REQUEST; should keep independent state */ |
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static int role; |
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switch (type) { |
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case FCGI_BEGIN_REQUEST: |
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role = (buf[offset+FCGI_HEADER_LEN] << 8) |
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| buf[offset+FCGI_HEADER_LEN+1]; |
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return 0; /* ignore; could save req_id and match further packets */ |
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case FCGI_ABORT_REQUEST: |
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return -2; /* done */ |
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case FCGI_END_REQUEST: |
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return -1; /* unexpected; this server is not sending FastCGI requests */ |
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case FCGI_PARAMS: |
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return fcgi_process_params(stream, req_id, role, |
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buf+offset+FCGI_HEADER_LEN, len); |
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case FCGI_STDIN: |
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/* XXX: TODO read and discard request body
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* (currently ignored in these FastCGI unit tests) |
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* (make basic effort to read body; ignore any timeouts or errors) */ |
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return -1; /* unexpected; this server is not expecting request body */ |
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case FCGI_STDOUT: |
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return -1; /* unexpected; this server is not sending FastCGI requests */ |
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case FCGI_STDERR: |
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return -1; /* unexpected; this server is not sending FastCGI requests */ |
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case FCGI_DATA: |
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return -1; /* unexpected; this server is not sending FastCGI requests */ |
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case FCGI_GET_VALUES: |
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return 0; /* ignore; not implemented */ |
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case FCGI_GET_VALUES_RESULT: |
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return 0; /* ignore; not implemented */ |
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default: |
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return -1; /* unexpected */ |
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} |
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} |
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|
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|
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static ssize_t |
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fcgi_recv_packet (FILE * const stream, ssize_t sz) |
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{ |
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ssize_t offset = 0; |
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while (sz - offset >= (ssize_t)FCGI_HEADER_LEN) { |
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FCGI_Header * const h = (FCGI_Header *)(buf+offset); |
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uint32_t pad = h->paddingLength; |
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uint32_t len = (h->contentLengthB1 << 8) | h->contentLengthB0; |
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if (sz - offset < (ssize_t)(FCGI_HEADER_LEN + len + pad)) |
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break; |
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int rc = fcgi_dispatch_packet(stream, offset, len); |
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if (rc < 0) |
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return rc; |
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offset += (ssize_t)(FCGI_HEADER_LEN + len + pad); |
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} |
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return offset; |
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} |
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|
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|
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static int |
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fcgi_recv (const int fd, FILE * const stream) |
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{ |
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ssize_t rd = 0, offset = 0; |
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/* XXX: remain blocking */ |
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/*fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);*/ |
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do { |
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struct pollfd pfd = { fd, POLLIN, 0 }; |
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switch (poll(&pfd, 1, 10)) { /* 10ms timeout */ |
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default: /* 1; the only pfd has revents */ |
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break; |
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case -1: /* error */ |
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case 0: /* timeout */ |
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pfd.revents |= POLLERR; |
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break; |
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} |
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if (!(pfd.revents & POLLIN)) |
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break; |
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|
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do { |
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rd = recv(fd, buf+offset, sizeof(buf)-offset, MSG_DONTWAIT); |
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} while (rd < 0 && errno == EINTR); |
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|
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if (rd > 0) { |
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offset += rd; |
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rd = fcgi_recv_packet(stream, offset); |
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if (rd < 0) |
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return (-2 == rd) ? 0 : -1; /*(-2 indicates done)*/ |
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if (rd > 0) { |
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offset -= rd; |
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if (offset) |
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memmove(buf, buf+rd, offset); |
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} |
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} |
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else if (0 == rd || (errno != EAGAIN && errno != EWOULDBLOCK)) |
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break; |
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} while (offset < (ssize_t)sizeof(buf)); |
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return -1; |
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} |
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|
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int |
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main (void) |
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{ |
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int fd; |
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fcntl(FCGI_LISTENSOCK_FILENO, F_SETFL, |
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fcntl(FCGI_LISTENSOCK_FILENO, F_GETFL) & ~O_NONBLOCK); |
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|
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do { |
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fd = accept(FCGI_LISTENSOCK_FILENO, NULL, NULL); |
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if (fd < 0) |
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continue; |
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/* XXX: skip checking FCGI_WEB_SERVER_ADDRS; not implemented */ |
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|
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/* uses stdio to retain prior behavior of output buffering (default)
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* and flushing with fflush() at specific points */ |
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FILE *stream = fdopen(fd, "r+"); |
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if (NULL == stream) { |
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close(fd); |
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continue; |
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} |
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fcgi_recv(fd, stream); |
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fflush(stream); |
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fclose(stream); |
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} while (fd > 0 ? !finished : errno == EINTR); |
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|
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int main (void) { |
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|
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while (FCGI_Accept() >= 0) { |
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char* p; |
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|
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if (NULL != (p = getenv("QUERY_STRING"))) { |
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if (0 == strcmp(p, "lf")) { |
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printf("Status: 200 OK\n\n"); |
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} else if (0 == strcmp(p, "crlf")) { |
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printf("Status: 200 OK\r\n\r\n"); |
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} else if (0 == strcmp(p, "slow-lf")) { |
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printf("Status: 200 OK\n"); |
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fflush(stdout); |
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printf("\n"); |
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} else if (0 == strcmp(p,"slow-crlf")) { |
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printf("Status: 200 OK\r\n"); |
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fflush(stdout); |
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printf("\r\n"); |
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} else if (0 == strcmp(p, "die-at-end")) { |
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printf("Status: 200 OK\r\n\r\n"); |
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printf("test123"); |
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FCGI_Finish(); |
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break; |
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} else { |
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printf("Status: 200 OK\r\n\r\n"); |
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} |
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} else { |
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printf("Status: 500 Internal Foo\r\n\r\n"); |
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} |
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|
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if (0 == strcmp(p, "path_info")) { |
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printf("%s", getenv("PATH_INFO")); |
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} else if (0 == strcmp(p, "script_name")) { |
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printf("%s", getenv("SCRIPT_NAME")); |
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} else if (0 == strcmp(p, "var")) { |
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p = getenv("X_LIGHTTPD_FCGI_AUTH"); |
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printf("%s", p ? p : "(no value)"); |
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} else { |
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printf("test123"); |
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} |
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} |
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|
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return 0; |
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return 0; |
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} |
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|
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