1 b0a6bcf7 2022-09-13 op /*
  2 b0a6bcf7 2022-09-13 op  * Copyright (c) 2022 Omar Polo <op@omarpolo.com>
  3 b0a6bcf7 2022-09-13 op  *
  4 b0a6bcf7 2022-09-13 op  * Permission to use, copy, modify, and distribute this software for any
  5 b0a6bcf7 2022-09-13 op  * purpose with or without fee is hereby granted, provided that the above
  6 b0a6bcf7 2022-09-13 op  * copyright notice and this permission notice appear in all copies.
  7 b0a6bcf7 2022-09-13 op  *
  8 b0a6bcf7 2022-09-13 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 b0a6bcf7 2022-09-13 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 b0a6bcf7 2022-09-13 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 b0a6bcf7 2022-09-13 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 b0a6bcf7 2022-09-13 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 b0a6bcf7 2022-09-13 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 b0a6bcf7 2022-09-13 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 b0a6bcf7 2022-09-13 op  */
 16 b0a6bcf7 2022-09-13 op 
 17 b0a6bcf7 2022-09-13 op #include <sys/queue.h>
 18 b0a6bcf7 2022-09-13 op #include <sys/tree.h>
 19 b0a6bcf7 2022-09-13 op #include <sys/socket.h>
 20 b0a6bcf7 2022-09-13 op 
 21 b0a6bcf7 2022-09-13 op #include <netinet/in.h>
 22 b0a6bcf7 2022-09-13 op #include <arpa/inet.h>
 23 b0a6bcf7 2022-09-13 op 
 24 b0a6bcf7 2022-09-13 op #include <errno.h>
 25 b0a6bcf7 2022-09-13 op #include <event.h>
 26 b0a6bcf7 2022-09-13 op #include <limits.h>
 27 b0a6bcf7 2022-09-13 op #include <stdarg.h>
 28 b0a6bcf7 2022-09-13 op #include <stdio.h>
 29 b0a6bcf7 2022-09-13 op #include <stdlib.h>
 30 b0a6bcf7 2022-09-13 op #include <stdint.h>
 31 b0a6bcf7 2022-09-13 op #include <string.h>
 32 b0a6bcf7 2022-09-13 op #include <unistd.h>
 33 b0a6bcf7 2022-09-13 op 
 34 b0a6bcf7 2022-09-13 op #include "log.h"
 35 b0a6bcf7 2022-09-13 op 
 36 b0a6bcf7 2022-09-13 op #include "galileo.h"
 37 b0a6bcf7 2022-09-13 op 
 38 b0a6bcf7 2022-09-13 op #define MIN(a, b)	((a) < (b) ? (a) : (b))
 39 b0a6bcf7 2022-09-13 op 
 40 b0a6bcf7 2022-09-13 op struct fcgi_header {
 41 b0a6bcf7 2022-09-13 op 	unsigned char version;
 42 b0a6bcf7 2022-09-13 op 	unsigned char type;
 43 b0a6bcf7 2022-09-13 op 	unsigned char req_id1;
 44 b0a6bcf7 2022-09-13 op 	unsigned char req_id0;
 45 b0a6bcf7 2022-09-13 op 	unsigned char content_len1;
 46 b0a6bcf7 2022-09-13 op 	unsigned char content_len0;
 47 b0a6bcf7 2022-09-13 op 	unsigned char padding;
 48 b0a6bcf7 2022-09-13 op 	unsigned char reserved;
 49 b0a6bcf7 2022-09-13 op } __attribute__((packed));
 50 b0a6bcf7 2022-09-13 op 
 51 b0a6bcf7 2022-09-13 op /*
 52 b0a6bcf7 2022-09-13 op  * number of bytes in a FCGI_HEADER.  Future version of the protocol
 53 b0a6bcf7 2022-09-13 op  * will not reduce this number.
 54 b0a6bcf7 2022-09-13 op  */
 55 b0a6bcf7 2022-09-13 op #define FCGI_HEADER_LEN	8
 56 b0a6bcf7 2022-09-13 op 
 57 b0a6bcf7 2022-09-13 op /*
 58 b0a6bcf7 2022-09-13 op  * values for the version component
 59 b0a6bcf7 2022-09-13 op  */
 60 b0a6bcf7 2022-09-13 op #define FCGI_VERSION_1	1
 61 b0a6bcf7 2022-09-13 op 
 62 b0a6bcf7 2022-09-13 op /*
 63 b0a6bcf7 2022-09-13 op  * values for the type component
 64 b0a6bcf7 2022-09-13 op  */
 65 b0a6bcf7 2022-09-13 op #define FCGI_BEGIN_REQUEST	 1
 66 b0a6bcf7 2022-09-13 op #define FCGI_ABORT_REQUEST	 2
 67 b0a6bcf7 2022-09-13 op #define FCGI_END_REQUEST	 3
 68 b0a6bcf7 2022-09-13 op #define FCGI_PARAMS		 4
 69 b0a6bcf7 2022-09-13 op #define FCGI_STDIN		 5
 70 b0a6bcf7 2022-09-13 op #define FCGI_STDOUT		 6
 71 b0a6bcf7 2022-09-13 op #define FCGI_STDERR		 7
 72 b0a6bcf7 2022-09-13 op #define FCGI_DATA		 8
 73 b0a6bcf7 2022-09-13 op #define FCGI_GET_VALUES		 9
 74 b0a6bcf7 2022-09-13 op #define FCGI_GET_VALUES_RESULT	10
 75 b0a6bcf7 2022-09-13 op #define FCGI_UNKNOWN_TYPE	11
 76 b0a6bcf7 2022-09-13 op #define FCGI_MAXTYPE		(FCGI_UNKNOWN_TYPE)
 77 b0a6bcf7 2022-09-13 op 
 78 b0a6bcf7 2022-09-13 op struct fcgi_begin_req {
 79 b0a6bcf7 2022-09-13 op 	unsigned char role1;
 80 b0a6bcf7 2022-09-13 op 	unsigned char role0;
 81 b0a6bcf7 2022-09-13 op 	unsigned char flags;
 82 b0a6bcf7 2022-09-13 op 	unsigned char reserved[5];
 83 b0a6bcf7 2022-09-13 op };
 84 b0a6bcf7 2022-09-13 op 
 85 b0a6bcf7 2022-09-13 op struct fcgi_begin_req_record {
 86 b0a6bcf7 2022-09-13 op 	struct fcgi_header	header;
 87 b0a6bcf7 2022-09-13 op 	struct fcgi_begin_req	body;
 88 b0a6bcf7 2022-09-13 op };
 89 b0a6bcf7 2022-09-13 op 
 90 b0a6bcf7 2022-09-13 op /*
 91 b0a6bcf7 2022-09-13 op  * mask for flags;
 92 b0a6bcf7 2022-09-13 op  */
 93 b0a6bcf7 2022-09-13 op #define FCGI_KEEP_CONN		1
 94 b0a6bcf7 2022-09-13 op 
 95 b0a6bcf7 2022-09-13 op /*
 96 b0a6bcf7 2022-09-13 op  * values for the role
 97 b0a6bcf7 2022-09-13 op  */
 98 b0a6bcf7 2022-09-13 op #define FCGI_RESPONDER	1
 99 b0a6bcf7 2022-09-13 op #define FCGI_AUTHORIZER	2
100 b0a6bcf7 2022-09-13 op #define FCGI_FILTER	3
101 b0a6bcf7 2022-09-13 op 
102 b0a6bcf7 2022-09-13 op struct fcgi_end_req_body {
103 b0a6bcf7 2022-09-13 op 	unsigned char app_status3;
104 b0a6bcf7 2022-09-13 op 	unsigned char app_status2;
105 b0a6bcf7 2022-09-13 op 	unsigned char app_status1;
106 b0a6bcf7 2022-09-13 op 	unsigned char app_status0;
107 b0a6bcf7 2022-09-13 op 	unsigned char proto_status;
108 b0a6bcf7 2022-09-13 op 	unsigned char reserved[3];
109 b0a6bcf7 2022-09-13 op };
110 b0a6bcf7 2022-09-13 op 
111 b0a6bcf7 2022-09-13 op /*
112 b0a6bcf7 2022-09-13 op  * values for proto_status
113 b0a6bcf7 2022-09-13 op  */
114 b0a6bcf7 2022-09-13 op #define FCGI_REQUEST_COMPLETE	0
115 b0a6bcf7 2022-09-13 op #define FCGI_CANT_MPX_CONN	1
116 b0a6bcf7 2022-09-13 op #define FCGI_OVERLOADED		2
117 b0a6bcf7 2022-09-13 op #define FCGI_UNKNOWN_ROLE	3
118 b0a6bcf7 2022-09-13 op 
119 b0a6bcf7 2022-09-13 op /*
120 b0a6bcf7 2022-09-13 op  * Variable names for FCGI_GET_VALUES / FCGI_GET_VALUES_RESULT
121 b0a6bcf7 2022-09-13 op  * records.
122 b0a6bcf7 2022-09-13 op  */
123 b0a6bcf7 2022-09-13 op #define FCGI_MAX_CONNS	"FCGI_MAX_CONNS"
124 b0a6bcf7 2022-09-13 op #define FCGI_MAX_REQS	"FCGI_MAX_REQS"
125 b0a6bcf7 2022-09-13 op #define FCGI_MPXS_CONNS	"FCGI_MPXS_CONNS"
126 b0a6bcf7 2022-09-13 op 
127 b0a6bcf7 2022-09-13 op #define CAT(f0, f1)	((f0) + ((f1) << 8))
128 b0a6bcf7 2022-09-13 op 
129 b0a6bcf7 2022-09-13 op enum {
130 b0a6bcf7 2022-09-13 op 	FCGI_RECORD_HEADER,
131 b0a6bcf7 2022-09-13 op 	FCGI_RECORD_BODY,
132 b0a6bcf7 2022-09-13 op };
133 b0a6bcf7 2022-09-13 op 
134 b0a6bcf7 2022-09-13 op volatile int fcgi_inflight;
135 b0a6bcf7 2022-09-13 op 
136 b0a6bcf7 2022-09-13 op static int
137 b0a6bcf7 2022-09-13 op fcgi_send_end_req(struct fcgi *fcgi, int id, int as, int ps)
138 b0a6bcf7 2022-09-13 op {
139 b0a6bcf7 2022-09-13 op 	struct bufferevent	*bev = fcgi->fcg_bev;
140 b0a6bcf7 2022-09-13 op 	struct fcgi_header	 hdr;
141 b0a6bcf7 2022-09-13 op 	struct fcgi_end_req_body end;
142 b0a6bcf7 2022-09-13 op 
143 b0a6bcf7 2022-09-13 op 	memset(&hdr, 0, sizeof(hdr));
144 b0a6bcf7 2022-09-13 op 	memset(&end, 0, sizeof(end));
145 b0a6bcf7 2022-09-13 op 
146 b0a6bcf7 2022-09-13 op 	hdr.version = FCGI_VERSION_1;
147 b0a6bcf7 2022-09-13 op 	hdr.type = FCGI_END_REQUEST;
148 b0a6bcf7 2022-09-13 op 	hdr.req_id0 = (id & 0xFF);
149 b0a6bcf7 2022-09-13 op 	hdr.req_id1 = (id >> 8);
150 b0a6bcf7 2022-09-13 op 	hdr.content_len0 = sizeof(end);
151 b0a6bcf7 2022-09-13 op 
152 b0a6bcf7 2022-09-13 op 	end.app_status0 = (unsigned char)as;
153 b0a6bcf7 2022-09-13 op 	end.proto_status = (unsigned char)ps;
154 b0a6bcf7 2022-09-13 op 
155 b0a6bcf7 2022-09-13 op 	if (bufferevent_write(bev, &hdr, sizeof(hdr)) == -1)
156 b0a6bcf7 2022-09-13 op 		return (-1);
157 b0a6bcf7 2022-09-13 op 	if (bufferevent_write(bev, &end, sizeof(end)) == -1)
158 b0a6bcf7 2022-09-13 op 		return (-1);
159 b0a6bcf7 2022-09-13 op 	return (0);
160 b0a6bcf7 2022-09-13 op }
161 b0a6bcf7 2022-09-13 op 
162 b0a6bcf7 2022-09-13 op static int
163 b0a6bcf7 2022-09-13 op end_request(struct client *clt, int status, int proto_status)
164 b0a6bcf7 2022-09-13 op {
165 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = clt->clt_fcgi;
166 b0a6bcf7 2022-09-13 op 	int			 r;
167 b0a6bcf7 2022-09-13 op 
168 b0a6bcf7 2022-09-13 op 	if (clt_flush(clt) == -1)
169 b0a6bcf7 2022-09-13 op 		return (-1);
170 b0a6bcf7 2022-09-13 op 
171 b0a6bcf7 2022-09-13 op 	r = fcgi_send_end_req(fcgi, clt->clt_id, status,
172 b0a6bcf7 2022-09-13 op 	    proto_status);
173 b0a6bcf7 2022-09-13 op 	if (r == -1) {
174 b0a6bcf7 2022-09-13 op 		fcgi_error(fcgi->fcg_bev, EV_WRITE, fcgi);
175 b0a6bcf7 2022-09-13 op 		return (-1);
176 b0a6bcf7 2022-09-13 op 	}
177 b0a6bcf7 2022-09-13 op 
178 b0a6bcf7 2022-09-13 op 	SPLAY_REMOVE(client_tree, &fcgi->fcg_clients, clt);
179 b0a6bcf7 2022-09-13 op 	proxy_client_free(clt);
180 247917be 2022-09-14 op 
181 247917be 2022-09-14 op 	if (!fcgi->fcg_keep_conn)
182 247917be 2022-09-14 op 		fcgi->fcg_done = 1;
183 247917be 2022-09-14 op 
184 b0a6bcf7 2022-09-13 op 	return (0);
185 b0a6bcf7 2022-09-13 op }
186 b0a6bcf7 2022-09-13 op 
187 b0a6bcf7 2022-09-13 op int
188 b0a6bcf7 2022-09-13 op fcgi_end_request(struct client *clt, int status)
189 b0a6bcf7 2022-09-13 op {
190 b0a6bcf7 2022-09-13 op 	return (end_request(clt, status, FCGI_REQUEST_COMPLETE));
191 b0a6bcf7 2022-09-13 op }
192 b0a6bcf7 2022-09-13 op 
193 b0a6bcf7 2022-09-13 op int
194 b0a6bcf7 2022-09-13 op fcgi_abort_request(struct client *clt)
195 b0a6bcf7 2022-09-13 op {
196 b0a6bcf7 2022-09-13 op 	return (end_request(clt, 1, FCGI_OVERLOADED));
197 b0a6bcf7 2022-09-13 op }
198 b0a6bcf7 2022-09-13 op 
199 b0a6bcf7 2022-09-13 op static void
200 b0a6bcf7 2022-09-13 op fcgi_inflight_dec(const char *why)
201 b0a6bcf7 2022-09-13 op {
202 b0a6bcf7 2022-09-13 op 	fcgi_inflight--;
203 b0a6bcf7 2022-09-13 op 	log_debug("%s: fcgi inflight decremented, now %d, %s",
204 b0a6bcf7 2022-09-13 op 	    __func__, fcgi_inflight, why);
205 b0a6bcf7 2022-09-13 op }
206 b0a6bcf7 2022-09-13 op 
207 b0a6bcf7 2022-09-13 op void
208 ea8874f1 2022-09-13 op fcgi_accept(int fd, short event, void *arg)
209 b0a6bcf7 2022-09-13 op {
210 ea8874f1 2022-09-13 op 	struct galileo		*env = arg;
211 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = NULL;
212 b0a6bcf7 2022-09-13 op 	socklen_t		 slen;
213 b0a6bcf7 2022-09-13 op 	struct sockaddr_storage	 ss;
214 b0a6bcf7 2022-09-13 op 	int			 s = -1;
215 b0a6bcf7 2022-09-13 op 
216 ea8874f1 2022-09-13 op 	event_add(&env->sc_evpause, NULL);
217 ea8874f1 2022-09-13 op 	if ((event & EV_TIMEOUT))
218 ea8874f1 2022-09-13 op 		return;
219 ea8874f1 2022-09-13 op 
220 b0a6bcf7 2022-09-13 op 	slen = sizeof(ss);
221 b0a6bcf7 2022-09-13 op 	if ((s = accept_reserve(env->sc_sock_fd, (struct sockaddr *)&ss,
222 b0a6bcf7 2022-09-13 op 	    &slen, FD_RESERVE, &fcgi_inflight)) == -1) {
223 b0a6bcf7 2022-09-13 op 		/*
224 b0a6bcf7 2022-09-13 op 		 * Pause accept if we are out of file descriptors, or
225 b0a6bcf7 2022-09-13 op 		 * libevent will haunt us here too.
226 b0a6bcf7 2022-09-13 op 		 */
227 b0a6bcf7 2022-09-13 op 		if (errno == ENFILE || errno == EMFILE) {
228 b0a6bcf7 2022-09-13 op 			struct timeval evtpause = { 1, 0 };
229 b0a6bcf7 2022-09-13 op 
230 b0a6bcf7 2022-09-13 op 			event_del(&env->sc_evsock);
231 b0a6bcf7 2022-09-13 op 			evtimer_add(&env->sc_evpause, &evtpause);
232 b0a6bcf7 2022-09-13 op 			log_debug("%s: deferring connections", __func__);
233 b0a6bcf7 2022-09-13 op 		}
234 b0a6bcf7 2022-09-13 op 		return;
235 b0a6bcf7 2022-09-13 op 	}
236 b0a6bcf7 2022-09-13 op 
237 b0a6bcf7 2022-09-13 op 	if ((fcgi = calloc(1, sizeof(*fcgi))) == NULL)
238 b0a6bcf7 2022-09-13 op 		goto err;
239 b0a6bcf7 2022-09-13 op 
240 b0a6bcf7 2022-09-13 op 	fcgi->fcg_id = ++proxy_fcg_id;
241 b0a6bcf7 2022-09-13 op 	fcgi->fcg_s = s;
242 b0a6bcf7 2022-09-13 op 	fcgi->fcg_env = env;
243 b0a6bcf7 2022-09-13 op 	fcgi->fcg_want = FCGI_RECORD_HEADER;
244 b0a6bcf7 2022-09-13 op 	fcgi->fcg_toread = sizeof(struct fcgi_header);
245 b0a6bcf7 2022-09-13 op 	SPLAY_INIT(&fcgi->fcg_clients);
246 b0a6bcf7 2022-09-13 op 
247 b0a6bcf7 2022-09-13 op 	/* assume it's enabled until we get a FCGI_BEGIN_REQUEST */
248 b0a6bcf7 2022-09-13 op 	fcgi->fcg_keep_conn = 1;
249 b0a6bcf7 2022-09-13 op 
250 b0a6bcf7 2022-09-13 op 	fcgi->fcg_bev = bufferevent_new(fcgi->fcg_s, fcgi_read, fcgi_write,
251 b0a6bcf7 2022-09-13 op 	    fcgi_error, fcgi);
252 b0a6bcf7 2022-09-13 op 	if (fcgi->fcg_bev == NULL)
253 b0a6bcf7 2022-09-13 op 		goto err;
254 b0a6bcf7 2022-09-13 op 
255 b0a6bcf7 2022-09-13 op 	bufferevent_enable(fcgi->fcg_bev, EV_READ | EV_WRITE);
256 b0a6bcf7 2022-09-13 op 	return;
257 b0a6bcf7 2022-09-13 op 
258 b0a6bcf7 2022-09-13 op err:
259 b0a6bcf7 2022-09-13 op 	if (s != -1) {
260 b0a6bcf7 2022-09-13 op 		close(s);
261 b0a6bcf7 2022-09-13 op 		free(fcgi);
262 b0a6bcf7 2022-09-13 op 		fcgi_inflight_dec(__func__);
263 b0a6bcf7 2022-09-13 op 	}
264 b0a6bcf7 2022-09-13 op }
265 b0a6bcf7 2022-09-13 op 
266 b0a6bcf7 2022-09-13 op static int
267 b0a6bcf7 2022-09-13 op parse_len(struct fcgi *fcgi, struct evbuffer *src)
268 b0a6bcf7 2022-09-13 op {
269 b0a6bcf7 2022-09-13 op 	unsigned char		 c, x[3];
270 b0a6bcf7 2022-09-13 op 
271 b0a6bcf7 2022-09-13 op 	fcgi->fcg_toread--;
272 b0a6bcf7 2022-09-13 op 	evbuffer_remove(src, &c, 1);
273 b0a6bcf7 2022-09-13 op 	if (c >> 7 == 0)
274 b0a6bcf7 2022-09-13 op 		return (c);
275 b0a6bcf7 2022-09-13 op 
276 b0a6bcf7 2022-09-13 op 	if (fcgi->fcg_toread < 3)
277 b0a6bcf7 2022-09-13 op 		return (-1);
278 b0a6bcf7 2022-09-13 op 
279 b0a6bcf7 2022-09-13 op 	fcgi->fcg_toread -= 3;
280 b0a6bcf7 2022-09-13 op 	evbuffer_remove(src, x, sizeof(x));
281 b0a6bcf7 2022-09-13 op 	return (((c & 0x7F) << 24) | (x[0] << 16) | (x[1] << 8) | x[2]);
282 b0a6bcf7 2022-09-13 op }
283 b0a6bcf7 2022-09-13 op 
284 b0a6bcf7 2022-09-13 op static int
285 b0a6bcf7 2022-09-13 op fcgi_parse_params(struct fcgi *fcgi, struct evbuffer *src, struct client *clt)
286 b0a6bcf7 2022-09-13 op {
287 b0a6bcf7 2022-09-13 op 	char			 pname[32];
288 b0a6bcf7 2022-09-13 op 	char			 server[HOST_NAME_MAX + 1];
289 b0a6bcf7 2022-09-13 op 	char			 path[PATH_MAX];
290 b0a6bcf7 2022-09-13 op 	int			 nlen, vlen;
291 b0a6bcf7 2022-09-13 op 
292 b0a6bcf7 2022-09-13 op 	while (fcgi->fcg_toread > 0) {
293 b0a6bcf7 2022-09-13 op 		if ((nlen = parse_len(fcgi, src)) < 0 ||
294 b0a6bcf7 2022-09-13 op 		    (vlen = parse_len(fcgi, src)) < 0)
295 b0a6bcf7 2022-09-13 op 			return (-1);
296 b0a6bcf7 2022-09-13 op 
297 b0a6bcf7 2022-09-13 op 		if (fcgi->fcg_toread < nlen + vlen)
298 b0a6bcf7 2022-09-13 op 			return (-1);
299 b0a6bcf7 2022-09-13 op 
300 b0a6bcf7 2022-09-13 op 		if ((size_t)nlen > sizeof(pname) - 1) {
301 b0a6bcf7 2022-09-13 op 			/* ignore this parameter */
302 b0a6bcf7 2022-09-13 op 			fcgi->fcg_toread -= nlen - vlen;
303 b0a6bcf7 2022-09-13 op 			evbuffer_drain(src, nlen + vlen);
304 b0a6bcf7 2022-09-13 op 			continue;
305 b0a6bcf7 2022-09-13 op 		}
306 b0a6bcf7 2022-09-13 op 
307 b0a6bcf7 2022-09-13 op 		fcgi->fcg_toread -= nlen;
308 b0a6bcf7 2022-09-13 op 		evbuffer_remove(src, &pname, nlen);
309 b0a6bcf7 2022-09-13 op 		pname[nlen] = '\0';
310 b0a6bcf7 2022-09-13 op 
311 b0a6bcf7 2022-09-13 op 		if (!strcmp(pname, "SERVER_NAME") &&
312 b0a6bcf7 2022-09-13 op 		    (size_t)vlen < sizeof(server)) {
313 b0a6bcf7 2022-09-13 op 			fcgi->fcg_toread -= vlen;
314 b0a6bcf7 2022-09-13 op 			evbuffer_remove(src, &server, vlen);
315 b0a6bcf7 2022-09-13 op 			server[vlen] = '\0';
316 b0a6bcf7 2022-09-13 op 
317 c5d5d231 2022-09-14 op 			free(clt->clt_server_name);
318 b0a6bcf7 2022-09-13 op 			if ((clt->clt_server_name = strdup(server)) == NULL)
319 b0a6bcf7 2022-09-13 op 				return (-1);
320 b0a6bcf7 2022-09-13 op 			log_debug("clt %d: server_name: %s", clt->clt_id,
321 b0a6bcf7 2022-09-13 op 			    clt->clt_server_name);
322 b0a6bcf7 2022-09-13 op 			continue;
323 b0a6bcf7 2022-09-13 op 		}
324 b0a6bcf7 2022-09-13 op 
325 b0a6bcf7 2022-09-13 op 		if (!strcmp(pname, "SCRIPT_NAME") &&
326 b0a6bcf7 2022-09-13 op 		    (size_t)vlen < sizeof(path)) {
327 b0a6bcf7 2022-09-13 op 			fcgi->fcg_toread -= vlen;
328 b0a6bcf7 2022-09-13 op 			evbuffer_remove(src, &path, vlen);
329 b0a6bcf7 2022-09-13 op 			path[vlen] = '\0';
330 b0a6bcf7 2022-09-13 op 
331 c5d5d231 2022-09-14 op 			free(clt->clt_script_name);
332 b0a6bcf7 2022-09-13 op 			if ((clt->clt_script_name = strdup(path)) == NULL)
333 b0a6bcf7 2022-09-13 op 				return (-1);
334 b0a6bcf7 2022-09-13 op 			log_debug("clt %d: script_name: %s", clt->clt_id,
335 b0a6bcf7 2022-09-13 op 			    clt->clt_script_name);
336 b0a6bcf7 2022-09-13 op 			continue;
337 b0a6bcf7 2022-09-13 op 		}
338 b0a6bcf7 2022-09-13 op 
339 b0a6bcf7 2022-09-13 op 		if (!strcmp(pname, "PATH_INFO") &&
340 b0a6bcf7 2022-09-13 op 		    (size_t)vlen < sizeof(path)) {
341 b0a6bcf7 2022-09-13 op 			fcgi->fcg_toread -= vlen;
342 b0a6bcf7 2022-09-13 op 			evbuffer_remove(src, &path, vlen);
343 b0a6bcf7 2022-09-13 op 			path[vlen] = '\0';
344 2944b578 2022-09-14 op 
345 c5d5d231 2022-09-14 op 			free(clt->clt_path_info);
346 1296d9c0 2022-09-14 op 			clt->clt_path_info = NULL;
347 1296d9c0 2022-09-14 op 
348 1296d9c0 2022-09-14 op 			if (*path != '/')
349 1296d9c0 2022-09-14 op 				asprintf(&clt->clt_path_info, "/%s", path);
350 1296d9c0 2022-09-14 op 			else
351 1296d9c0 2022-09-14 op 				clt->clt_path_info = strdup(path);
352 1296d9c0 2022-09-14 op 
353 1296d9c0 2022-09-14 op 			if (clt->clt_path_info == NULL)
354 b0a6bcf7 2022-09-13 op 				return (-1);
355 1296d9c0 2022-09-14 op 
356 b0a6bcf7 2022-09-13 op 			log_debug("clt %d: path_info: %s", clt->clt_id,
357 b0a6bcf7 2022-09-13 op 			    clt->clt_path_info);
358 b0a6bcf7 2022-09-13 op 			continue;
359 b0a6bcf7 2022-09-13 op 		}
360 b0a6bcf7 2022-09-13 op 
361 b0a6bcf7 2022-09-13 op 		fcgi->fcg_toread -= vlen;
362 b0a6bcf7 2022-09-13 op 		evbuffer_drain(src, vlen);
363 b0a6bcf7 2022-09-13 op 	}
364 b0a6bcf7 2022-09-13 op 
365 b0a6bcf7 2022-09-13 op 	return (0);
366 b0a6bcf7 2022-09-13 op }
367 b0a6bcf7 2022-09-13 op 
368 b0a6bcf7 2022-09-13 op void
369 b0a6bcf7 2022-09-13 op fcgi_read(struct bufferevent *bev, void *d)
370 b0a6bcf7 2022-09-13 op {
371 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = d;
372 b0a6bcf7 2022-09-13 op 	struct galileo		*env = fcgi->fcg_env;
373 b0a6bcf7 2022-09-13 op 	struct evbuffer		*src = EVBUFFER_INPUT(bev);
374 b0a6bcf7 2022-09-13 op 	struct fcgi_header	 hdr;
375 b0a6bcf7 2022-09-13 op 	struct fcgi_begin_req	 breq;
376 b0a6bcf7 2022-09-13 op 	struct client		*clt, q;
377 b0a6bcf7 2022-09-13 op 	int			 role;
378 b0a6bcf7 2022-09-13 op 
379 b0a6bcf7 2022-09-13 op 	memset(&q, 0, sizeof(q));
380 b0a6bcf7 2022-09-13 op 
381 b0a6bcf7 2022-09-13 op 	for (;;) {
382 b0a6bcf7 2022-09-13 op 		if (EVBUFFER_LENGTH(src) < (size_t)fcgi->fcg_toread)
383 b0a6bcf7 2022-09-13 op 			return;
384 b0a6bcf7 2022-09-13 op 
385 b0a6bcf7 2022-09-13 op 		if (fcgi->fcg_want == FCGI_RECORD_HEADER) {
386 b0a6bcf7 2022-09-13 op 			fcgi->fcg_want = FCGI_RECORD_BODY;
387 b0a6bcf7 2022-09-13 op 			bufferevent_read(bev, &hdr, sizeof(hdr));
388 b0a6bcf7 2022-09-13 op 
389 b0a6bcf7 2022-09-13 op #ifdef DEBUG
390 b0a6bcf7 2022-09-13 op 			log_warnx("header: v=%d t=%d id=%d len=%d p=%d",
391 b0a6bcf7 2022-09-13 op 			    hdr.version, hdr.type,
392 b0a6bcf7 2022-09-13 op 			    CAT(hdr.req_id0, hdr.req_id1),
393 b0a6bcf7 2022-09-13 op 			    CAT(hdr.content_len0, hdr.content_len1),
394 b0a6bcf7 2022-09-13 op 			    hdr.padding);
395 b0a6bcf7 2022-09-13 op #endif
396 b0a6bcf7 2022-09-13 op 
397 b0a6bcf7 2022-09-13 op 			if (hdr.version != FCGI_VERSION_1) {
398 b0a6bcf7 2022-09-13 op 				log_warnx("unknown fastcgi version: %d",
399 b0a6bcf7 2022-09-13 op 				    hdr.version);
400 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
401 b0a6bcf7 2022-09-13 op 				return;
402 b0a6bcf7 2022-09-13 op 			}
403 b0a6bcf7 2022-09-13 op 
404 b0a6bcf7 2022-09-13 op 			fcgi->fcg_toread = CAT(hdr.content_len0,
405 b0a6bcf7 2022-09-13 op 			    hdr.content_len1);
406 b0a6bcf7 2022-09-13 op 			if (fcgi->fcg_toread < 0) {
407 b0a6bcf7 2022-09-13 op 				log_warnx("invalid record length: %d",
408 b0a6bcf7 2022-09-13 op 				    fcgi->fcg_toread);
409 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
410 b0a6bcf7 2022-09-13 op 				return;
411 b0a6bcf7 2022-09-13 op 			}
412 b0a6bcf7 2022-09-13 op 
413 b0a6bcf7 2022-09-13 op 			fcgi->fcg_padding = hdr.padding;
414 b0a6bcf7 2022-09-13 op 			if (fcgi->fcg_padding < 0) {
415 b0a6bcf7 2022-09-13 op 				log_warnx("invalid padding: %d",
416 b0a6bcf7 2022-09-13 op 				    fcgi->fcg_padding);
417 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
418 b0a6bcf7 2022-09-13 op 				return;
419 b0a6bcf7 2022-09-13 op 			}
420 b0a6bcf7 2022-09-13 op 
421 b0a6bcf7 2022-09-13 op 			fcgi->fcg_type = hdr.type;
422 b0a6bcf7 2022-09-13 op 			fcgi->fcg_rec_id = CAT(hdr.req_id0, hdr.req_id1);
423 b0a6bcf7 2022-09-13 op 			continue;
424 b0a6bcf7 2022-09-13 op 		}
425 b0a6bcf7 2022-09-13 op 
426 b0a6bcf7 2022-09-13 op 		q.clt_id = fcgi->fcg_rec_id;
427 b0a6bcf7 2022-09-13 op 		clt = SPLAY_FIND(client_tree, &fcgi->fcg_clients, &q);
428 b0a6bcf7 2022-09-13 op 
429 b0a6bcf7 2022-09-13 op 		switch (fcgi->fcg_type) {
430 b0a6bcf7 2022-09-13 op 		case FCGI_BEGIN_REQUEST:
431 b0a6bcf7 2022-09-13 op 			if (sizeof(breq) != fcgi->fcg_toread) {
432 b0a6bcf7 2022-09-13 op 				log_warnx("unexpected size for "
433 b0a6bcf7 2022-09-13 op 				    "FCGI_BEGIN_REQUEST");
434 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
435 b0a6bcf7 2022-09-13 op 				return;
436 b0a6bcf7 2022-09-13 op 			}
437 b0a6bcf7 2022-09-13 op 
438 b0a6bcf7 2022-09-13 op 			evbuffer_remove(src, &breq, sizeof(breq));
439 b0a6bcf7 2022-09-13 op 
440 b0a6bcf7 2022-09-13 op 			role = CAT(breq.role0, breq.role1);
441 b0a6bcf7 2022-09-13 op 			if (role != FCGI_RESPONDER) {
442 b0a6bcf7 2022-09-13 op 				log_warnx("unknown fastcgi role: %d",
443 b0a6bcf7 2022-09-13 op 				    role);
444 b0a6bcf7 2022-09-13 op 				if (fcgi_send_end_req(fcgi, fcgi->fcg_rec_id,
445 b0a6bcf7 2022-09-13 op 				    1, FCGI_UNKNOWN_ROLE) == -1) {
446 b0a6bcf7 2022-09-13 op 					fcgi_error(bev, EV_READ, d);
447 b0a6bcf7 2022-09-13 op 					return;
448 b0a6bcf7 2022-09-13 op 				}
449 b0a6bcf7 2022-09-13 op 				break;
450 b0a6bcf7 2022-09-13 op 			}
451 b0a6bcf7 2022-09-13 op 
452 b0a6bcf7 2022-09-13 op 			if (!fcgi->fcg_keep_conn) {
453 b0a6bcf7 2022-09-13 op 				log_warnx("trying to reuse the fastcgi "
454 b0a6bcf7 2022-09-13 op 				    "socket without marking it as so.");
455 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
456 b0a6bcf7 2022-09-13 op 				return;
457 b0a6bcf7 2022-09-13 op 			}
458 b0a6bcf7 2022-09-13 op 			fcgi->fcg_keep_conn = breq.flags & FCGI_KEEP_CONN;
459 b0a6bcf7 2022-09-13 op 
460 b0a6bcf7 2022-09-13 op 			if (clt != NULL) {
461 b0a6bcf7 2022-09-13 op 				log_warnx("ignoring attemp to re-use an "
462 b0a6bcf7 2022-09-13 op 				    "active request id (%d)",
463 b0a6bcf7 2022-09-13 op 				    fcgi->fcg_rec_id);
464 b0a6bcf7 2022-09-13 op 				break;
465 b0a6bcf7 2022-09-13 op 			}
466 b0a6bcf7 2022-09-13 op 
467 b0a6bcf7 2022-09-13 op 			if ((clt = calloc(1, sizeof(*clt))) == NULL) {
468 b0a6bcf7 2022-09-13 op 				log_warnx("calloc");
469 b0a6bcf7 2022-09-13 op 				break;
470 b0a6bcf7 2022-09-13 op 			}
471 b0a6bcf7 2022-09-13 op 
472 b0a6bcf7 2022-09-13 op 			clt->clt_id = fcgi->fcg_rec_id;
473 b0a6bcf7 2022-09-13 op 			clt->clt_fd = -1;
474 b0a6bcf7 2022-09-13 op 			clt->clt_fcgi = fcgi;
475 b0a6bcf7 2022-09-13 op 			SPLAY_INSERT(client_tree, &fcgi->fcg_clients, clt);
476 b0a6bcf7 2022-09-13 op 			break;
477 b0a6bcf7 2022-09-13 op 		case FCGI_PARAMS:
478 b0a6bcf7 2022-09-13 op 			if (clt == NULL) {
479 b0a6bcf7 2022-09-13 op 				log_warnx("got FCGI_PARAMS for inactive id "
480 b0a6bcf7 2022-09-13 op 				    "(%d)", fcgi->fcg_rec_id);
481 b0a6bcf7 2022-09-13 op 				evbuffer_drain(src, fcgi->fcg_toread);
482 b0a6bcf7 2022-09-13 op 				break;
483 b0a6bcf7 2022-09-13 op 			}
484 b0a6bcf7 2022-09-13 op 			if (fcgi->fcg_toread == 0) {
485 b0a6bcf7 2022-09-13 op 				evbuffer_drain(src, fcgi->fcg_toread);
486 b0a6bcf7 2022-09-13 op 				proxy_start_request(env, clt);
487 b0a6bcf7 2022-09-13 op 				break;
488 b0a6bcf7 2022-09-13 op 			}
489 b0a6bcf7 2022-09-13 op 			if (fcgi_parse_params(fcgi, src, clt) == -1) {
490 b0a6bcf7 2022-09-13 op 				log_warnx("fcgi_parse_params failed");
491 b0a6bcf7 2022-09-13 op 				fcgi_error(bev, EV_READ, d);
492 b0a6bcf7 2022-09-13 op 				return;
493 b0a6bcf7 2022-09-13 op 			}
494 b0a6bcf7 2022-09-13 op 			break;
495 b0a6bcf7 2022-09-13 op 		case FCGI_STDIN:
496 b0a6bcf7 2022-09-13 op 			/* ignore */
497 b0a6bcf7 2022-09-13 op 			evbuffer_drain(src, fcgi->fcg_toread);
498 b0a6bcf7 2022-09-13 op 			break;
499 b0a6bcf7 2022-09-13 op 		case FCGI_ABORT_REQUEST:
500 b0a6bcf7 2022-09-13 op 			if (clt == NULL) {
501 b0a6bcf7 2022-09-13 op 				log_warnx("got FCGI_ABORT_REQUEST for inactive"
502 b0a6bcf7 2022-09-13 op 				    " id (%d)", fcgi->fcg_rec_id);
503 b0a6bcf7 2022-09-13 op 				evbuffer_drain(src, fcgi->fcg_toread);
504 b0a6bcf7 2022-09-13 op 				break;
505 b0a6bcf7 2022-09-13 op 			}
506 b0a6bcf7 2022-09-13 op 			if (fcgi_end_request(clt, 1) == -1) {
507 b0a6bcf7 2022-09-13 op 				/* calls fcgi_error on failure */
508 b0a6bcf7 2022-09-13 op 				return;
509 b0a6bcf7 2022-09-13 op 			}
510 b0a6bcf7 2022-09-13 op 			break;
511 b0a6bcf7 2022-09-13 op 		default:
512 b0a6bcf7 2022-09-13 op 			log_warnx("unknown fastcgi record type %d",
513 b0a6bcf7 2022-09-13 op 			    fcgi->fcg_type);
514 b0a6bcf7 2022-09-13 op 			evbuffer_drain(src, fcgi->fcg_toread);
515 b0a6bcf7 2022-09-13 op 			break;
516 b0a6bcf7 2022-09-13 op 		}
517 b0a6bcf7 2022-09-13 op 
518 b0a6bcf7 2022-09-13 op 		/* Prepare for the next record. */
519 b0a6bcf7 2022-09-13 op 		evbuffer_drain(src, fcgi->fcg_padding);
520 b0a6bcf7 2022-09-13 op 		fcgi->fcg_want = FCGI_RECORD_HEADER;
521 b0a6bcf7 2022-09-13 op 		fcgi->fcg_toread = sizeof(struct fcgi_header);
522 b0a6bcf7 2022-09-13 op 	}
523 b0a6bcf7 2022-09-13 op }
524 b0a6bcf7 2022-09-13 op 
525 b0a6bcf7 2022-09-13 op void
526 b0a6bcf7 2022-09-13 op fcgi_write(struct bufferevent *bev, void *d)
527 b0a6bcf7 2022-09-13 op {
528 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = d;
529 247917be 2022-09-14 op 	struct evbuffer		*out = EVBUFFER_OUTPUT(bev);
530 b0a6bcf7 2022-09-13 op 
531 247917be 2022-09-14 op 	if (fcgi->fcg_done && EVBUFFER_LENGTH(out) == 0)
532 247917be 2022-09-14 op 		fcgi_error(bev, EVBUFFER_EOF, fcgi);
533 b0a6bcf7 2022-09-13 op }
534 b0a6bcf7 2022-09-13 op 
535 b0a6bcf7 2022-09-13 op void
536 b0a6bcf7 2022-09-13 op fcgi_error(struct bufferevent *bev, short event, void *d)
537 b0a6bcf7 2022-09-13 op {
538 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = d;
539 b0a6bcf7 2022-09-13 op 	struct galileo		*env = fcgi->fcg_env;
540 b0a6bcf7 2022-09-13 op 	struct client		*clt;
541 b0a6bcf7 2022-09-13 op 
542 b0a6bcf7 2022-09-13 op 	log_debug("fcgi failure, shutting down connection (ev: %x)",
543 b0a6bcf7 2022-09-13 op 	    event);
544 b0a6bcf7 2022-09-13 op 	fcgi_inflight_dec(__func__);
545 b0a6bcf7 2022-09-13 op 
546 b0a6bcf7 2022-09-13 op 	while ((clt = SPLAY_MIN(client_tree, &fcgi->fcg_clients)) != NULL) {
547 b0a6bcf7 2022-09-13 op 		SPLAY_REMOVE(client_tree, &fcgi->fcg_clients, clt);
548 b0a6bcf7 2022-09-13 op 		proxy_client_free(clt);
549 b0a6bcf7 2022-09-13 op 	}
550 b0a6bcf7 2022-09-13 op 
551 b0a6bcf7 2022-09-13 op 	close(fcgi->fcg_s);
552 b0a6bcf7 2022-09-13 op 	bufferevent_free(fcgi->fcg_bev);
553 b0a6bcf7 2022-09-13 op 	SPLAY_REMOVE(fcgi_tree, &env->sc_fcgi_socks, fcgi);
554 b0a6bcf7 2022-09-13 op 	free(fcgi);
555 b0a6bcf7 2022-09-13 op 
556 b0a6bcf7 2022-09-13 op 	return;
557 b0a6bcf7 2022-09-13 op }
558 b0a6bcf7 2022-09-13 op 
559 b0a6bcf7 2022-09-13 op int
560 b0a6bcf7 2022-09-13 op clt_flush(struct client *clt)
561 b0a6bcf7 2022-09-13 op {
562 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = clt->clt_fcgi;
563 b0a6bcf7 2022-09-13 op 	struct bufferevent	*bev = fcgi->fcg_bev;
564 b0a6bcf7 2022-09-13 op 	struct fcgi_header	 hdr;
565 b0a6bcf7 2022-09-13 op 
566 b0a6bcf7 2022-09-13 op 	if (clt->clt_buflen == 0)
567 b0a6bcf7 2022-09-13 op 		return (0);
568 b0a6bcf7 2022-09-13 op 
569 b0a6bcf7 2022-09-13 op 	memset(&hdr, 0, sizeof(hdr));
570 b0a6bcf7 2022-09-13 op 	hdr.version = FCGI_VERSION_1;
571 b0a6bcf7 2022-09-13 op 	hdr.type = FCGI_STDOUT;
572 b0a6bcf7 2022-09-13 op 	hdr.req_id0 = (clt->clt_id & 0xFF);
573 b0a6bcf7 2022-09-13 op 	hdr.req_id1 = (clt->clt_id >> 8);
574 b0a6bcf7 2022-09-13 op 	hdr.content_len0 = (clt->clt_buflen & 0xFF);
575 b0a6bcf7 2022-09-13 op 	hdr.content_len1 = (clt->clt_buflen >> 8);
576 b0a6bcf7 2022-09-13 op 
577 b0a6bcf7 2022-09-13 op 	if (bufferevent_write(bev, &hdr, sizeof(hdr)) == -1 ||
578 b0a6bcf7 2022-09-13 op 	    bufferevent_write(bev, clt->clt_buf, clt->clt_buflen) == -1) {
579 b0a6bcf7 2022-09-13 op 		fcgi_error(bev, EV_WRITE, fcgi);
580 b0a6bcf7 2022-09-13 op 		return (-1);
581 b0a6bcf7 2022-09-13 op 	}
582 b0a6bcf7 2022-09-13 op 
583 b0a6bcf7 2022-09-13 op 	clt->clt_buflen = 0;
584 b0a6bcf7 2022-09-13 op 
585 b0a6bcf7 2022-09-13 op 	return (0);
586 b0a6bcf7 2022-09-13 op }
587 b0a6bcf7 2022-09-13 op 
588 b0a6bcf7 2022-09-13 op int
589 b0a6bcf7 2022-09-13 op clt_write(struct client *clt, const uint8_t *buf, size_t len)
590 b0a6bcf7 2022-09-13 op {
591 b0a6bcf7 2022-09-13 op 	size_t			 left, copy;
592 b0a6bcf7 2022-09-13 op 
593 b0a6bcf7 2022-09-13 op 	while (len > 0) {
594 b0a6bcf7 2022-09-13 op 		left = sizeof(clt->clt_buf) - clt->clt_buflen;
595 b0a6bcf7 2022-09-13 op 		if (left == 0) {
596 b0a6bcf7 2022-09-13 op 			if (clt_flush(clt) == -1)
597 b0a6bcf7 2022-09-13 op 				return (-1);
598 b0a6bcf7 2022-09-13 op 			left = sizeof(clt->clt_buf);
599 b0a6bcf7 2022-09-13 op 		}
600 b0a6bcf7 2022-09-13 op 
601 b0a6bcf7 2022-09-13 op 		copy = MIN(left, len);
602 b0a6bcf7 2022-09-13 op 
603 b0a6bcf7 2022-09-13 op 		memcpy(&clt->clt_buf[clt->clt_buflen], buf, copy);
604 b0a6bcf7 2022-09-13 op 		clt->clt_buflen += copy;
605 b0a6bcf7 2022-09-13 op 		buf += copy;
606 b0a6bcf7 2022-09-13 op 		len -= copy;
607 b0a6bcf7 2022-09-13 op 	}
608 b0a6bcf7 2022-09-13 op 
609 b0a6bcf7 2022-09-13 op 	return (0);
610 c9dc4bc6 2022-09-13 op }
611 c9dc4bc6 2022-09-13 op 
612 c9dc4bc6 2022-09-13 op int
613 c9dc4bc6 2022-09-13 op clt_putc(struct client *clt, char ch)
614 c9dc4bc6 2022-09-13 op {
615 c9dc4bc6 2022-09-13 op 	return (clt_write(clt, &ch, 1));
616 c9dc4bc6 2022-09-13 op }
617 c9dc4bc6 2022-09-13 op 
618 c9dc4bc6 2022-09-13 op int
619 c9dc4bc6 2022-09-13 op clt_puts(struct client *clt, const char *str)
620 c9dc4bc6 2022-09-13 op {
621 c9dc4bc6 2022-09-13 op 	return (clt_write(clt, str, strlen(str)));
622 b0a6bcf7 2022-09-13 op }
623 b0a6bcf7 2022-09-13 op 
624 b0a6bcf7 2022-09-13 op int
625 b0a6bcf7 2022-09-13 op clt_write_bufferevent(struct client *clt, struct bufferevent *bev)
626 b0a6bcf7 2022-09-13 op {
627 b0a6bcf7 2022-09-13 op 	struct evbuffer		*src = EVBUFFER_INPUT(bev);
628 b0a6bcf7 2022-09-13 op 	size_t			 len, left, copy;
629 b0a6bcf7 2022-09-13 op 
630 b0a6bcf7 2022-09-13 op 	len = EVBUFFER_LENGTH(src);
631 b0a6bcf7 2022-09-13 op 	while (len > 0) {
632 b0a6bcf7 2022-09-13 op 		left = sizeof(clt->clt_buf) - clt->clt_buflen;
633 b0a6bcf7 2022-09-13 op 		if (left == 0) {
634 b0a6bcf7 2022-09-13 op 			if (clt_flush(clt) == -1)
635 b0a6bcf7 2022-09-13 op 				return (-1);
636 b0a6bcf7 2022-09-13 op 			left = sizeof(clt->clt_buf);
637 b0a6bcf7 2022-09-13 op 		}
638 b0a6bcf7 2022-09-13 op 
639 b0a6bcf7 2022-09-13 op 		copy = bufferevent_read(bev, &clt->clt_buf[clt->clt_buflen],
640 b0a6bcf7 2022-09-13 op 		    MIN(left, len));
641 b0a6bcf7 2022-09-13 op 		clt->clt_buflen += copy;
642 b0a6bcf7 2022-09-13 op 
643 b0a6bcf7 2022-09-13 op 		len = EVBUFFER_LENGTH(src);
644 b0a6bcf7 2022-09-13 op 	}
645 b0a6bcf7 2022-09-13 op 
646 b0a6bcf7 2022-09-13 op 	return (0);
647 b0a6bcf7 2022-09-13 op }
648 b0a6bcf7 2022-09-13 op 
649 b0a6bcf7 2022-09-13 op int
650 b0a6bcf7 2022-09-13 op clt_printf(struct client *clt, const char *fmt, ...)
651 b0a6bcf7 2022-09-13 op {
652 b0a6bcf7 2022-09-13 op 	struct fcgi		*fcgi = clt->clt_fcgi;
653 b0a6bcf7 2022-09-13 op 	struct bufferevent	*bev = fcgi->fcg_bev;
654 b0a6bcf7 2022-09-13 op 	char			*str;
655 b0a6bcf7 2022-09-13 op 	va_list			 ap;
656 b0a6bcf7 2022-09-13 op 	int			 r;
657 b0a6bcf7 2022-09-13 op 
658 b0a6bcf7 2022-09-13 op 	va_start(ap, fmt);
659 b0a6bcf7 2022-09-13 op 	r = vasprintf(&str, fmt, ap);
660 b0a6bcf7 2022-09-13 op 	va_end(ap);
661 b0a6bcf7 2022-09-13 op 	if (r == -1) {
662 b0a6bcf7 2022-09-13 op 		fcgi_error(bev, EV_WRITE, fcgi);
663 b0a6bcf7 2022-09-13 op 		return (-1);
664 b0a6bcf7 2022-09-13 op 	}
665 b0a6bcf7 2022-09-13 op 
666 b0a6bcf7 2022-09-13 op 	r = clt_write(clt, str, r);
667 b0a6bcf7 2022-09-13 op 	free(str);
668 b0a6bcf7 2022-09-13 op 	return (r);
669 b0a6bcf7 2022-09-13 op }
670 b0a6bcf7 2022-09-13 op 
671 b0a6bcf7 2022-09-13 op int
672 b0a6bcf7 2022-09-13 op fcgi_cmp(struct fcgi *a, struct fcgi *b)
673 b0a6bcf7 2022-09-13 op {
674 b0a6bcf7 2022-09-13 op 	return ((int)a->fcg_id - b->fcg_id);
675 b0a6bcf7 2022-09-13 op }
676 b0a6bcf7 2022-09-13 op 
677 b0a6bcf7 2022-09-13 op int
678 b0a6bcf7 2022-09-13 op fcgi_client_cmp(struct client *a, struct client *b)
679 b0a6bcf7 2022-09-13 op {
680 b0a6bcf7 2022-09-13 op 	return ((int)a->clt_id - b->clt_id);
681 b0a6bcf7 2022-09-13 op }
682 b0a6bcf7 2022-09-13 op 
683 b0a6bcf7 2022-09-13 op SPLAY_GENERATE(fcgi_tree, fcgi, fcg_nodes, fcgi_cmp);
684 b0a6bcf7 2022-09-13 op SPLAY_GENERATE(client_tree, client, clt_nodes, fcgi_client_cmp);
685 b0a6bcf7 2022-09-13 op