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Date:: Thu Nov 16 21:40:04 2023 UTC
Message:: gotwebd: get rid of proc.[ch] proc.c really shines when there's a network of different types of processes, potentially with a various number of instances each, that needs to exchange messages. Gotwebd instead has a much simpler design, and using proc.c causes more overhead (/headaches) than it solves. So, this attempts to provide the same functionalities but with a much simpler implementation that fits gotwebd better. ok stsp@
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  1 a596b957 2022-07-14 tracey /*
  2 a596b957 2022-07-14 tracey  * Copyright (c) 2020-2022 Tracey Emery <tracey@traceyemery.net>
  3 a596b957 2022-07-14 tracey  * Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
  4 a596b957 2022-07-14 tracey  * Copyright (c) 2013 Florian Obser <florian@openbsd.org>
  5 a596b957 2022-07-14 tracey  *
  6 a596b957 2022-07-14 tracey  * Permission to use, copy, modify, and distribute this software for any
  7 a596b957 2022-07-14 tracey  * purpose with or without fee is hereby granted, provided that the above
  8 a596b957 2022-07-14 tracey  * copyright notice and this permission notice appear in all copies.
  9 a596b957 2022-07-14 tracey  *
 10 a596b957 2022-07-14 tracey  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 11 a596b957 2022-07-14 tracey  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 12 a596b957 2022-07-14 tracey  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 13 a596b957 2022-07-14 tracey  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 14 a596b957 2022-07-14 tracey  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 15 a596b957 2022-07-14 tracey  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 16 a596b957 2022-07-14 tracey  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 17 a596b957 2022-07-14 tracey  */
 18 a596b957 2022-07-14 tracey 
 19 a596b957 2022-07-14 tracey #include <arpa/inet.h>
 20 a596b957 2022-07-14 tracey #include <sys/queue.h>
 21 a596b957 2022-07-14 tracey #include <sys/socket.h>
 22 a596b957 2022-07-14 tracey #include <sys/types.h>
 23 311b7e33 2022-08-01 op #include <sys/uio.h>
 24 a596b957 2022-07-14 tracey 
 25 a596b957 2022-07-14 tracey #include <errno.h>
 26 a596b957 2022-07-14 tracey #include <event.h>
 27 a596b957 2022-07-14 tracey #include <imsg.h>
 28 01498c42 2022-08-19 op #include <stdarg.h>
 29 a596b957 2022-07-14 tracey #include <stdlib.h>
 30 a596b957 2022-07-14 tracey #include <stdio.h>
 31 a596b957 2022-07-14 tracey #include <string.h>
 32 a596b957 2022-07-14 tracey #include <time.h>
 33 a596b957 2022-07-14 tracey #include <unistd.h>
 34 a596b957 2022-07-14 tracey 
 35 a596b957 2022-07-14 tracey #include "got_error.h"
 36 df2d3cd2 2023-03-11 op #include "got_reference.h"
 37 a596b957 2022-07-14 tracey 
 38 a596b957 2022-07-14 tracey #include "gotwebd.h"
 39 ed619ca0 2022-12-14 op #include "tmpl.h"
 40 a596b957 2022-07-14 tracey 
 41 a596b957 2022-07-14 tracey size_t	 fcgi_parse_record(uint8_t *, size_t, struct request *);
 42 a596b957 2022-07-14 tracey void	 fcgi_parse_begin_request(uint8_t *, uint16_t, struct request *,
 43 a596b957 2022-07-14 tracey 	    uint16_t);
 44 a596b957 2022-07-14 tracey void	 fcgi_parse_params(uint8_t *, uint16_t, struct request *, uint16_t);
 45 3ff00ead 2022-08-09 op int	 fcgi_send_response(struct request *, int, const void *, size_t);
 46 a596b957 2022-07-14 tracey 
 47 a596b957 2022-07-14 tracey void	 dump_fcgi_record_header(const char *, struct fcgi_record_header *);
 48 a596b957 2022-07-14 tracey void	 dump_fcgi_begin_request_body(const char *,
 49 a596b957 2022-07-14 tracey 	    struct fcgi_begin_request_body *);
 50 a596b957 2022-07-14 tracey void	 dump_fcgi_end_request_body(const char *,
 51 a596b957 2022-07-14 tracey 	    struct fcgi_end_request_body *);
 52 a596b957 2022-07-14 tracey 
 53 a596b957 2022-07-14 tracey extern int	 cgi_inflight;
 54 a596b957 2022-07-14 tracey extern volatile int client_cnt;
 55 a596b957 2022-07-14 tracey 
 56 a596b957 2022-07-14 tracey void
 57 a596b957 2022-07-14 tracey fcgi_request(int fd, short events, void *arg)
 58 a596b957 2022-07-14 tracey {
 59 a596b957 2022-07-14 tracey 	struct request *c = arg;
 60 a596b957 2022-07-14 tracey 	ssize_t n;
 61 a596b957 2022-07-14 tracey 	size_t parsed = 0;
 62 a596b957 2022-07-14 tracey 
 63 a596b957 2022-07-14 tracey 	n = read(fd, c->buf + c->buf_pos + c->buf_len,
 64 a596b957 2022-07-14 tracey 	    FCGI_RECORD_SIZE - c->buf_pos-c->buf_len);
 65 a596b957 2022-07-14 tracey 
 66 a596b957 2022-07-14 tracey 	switch (n) {
 67 a596b957 2022-07-14 tracey 	case -1:
 68 a596b957 2022-07-14 tracey 		switch (errno) {
 69 a596b957 2022-07-14 tracey 		case EINTR:
 70 a596b957 2022-07-14 tracey 		case EAGAIN:
 71 a596b957 2022-07-14 tracey 			return;
 72 a596b957 2022-07-14 tracey 		default:
 73 a596b957 2022-07-14 tracey 			goto fail;
 74 a596b957 2022-07-14 tracey 		}
 75 a596b957 2022-07-14 tracey 		break;
 76 a596b957 2022-07-14 tracey 
 77 a596b957 2022-07-14 tracey 	case 0:
 78 a596b957 2022-07-14 tracey 		log_debug("closed connection");
 79 a596b957 2022-07-14 tracey 		goto fail;
 80 a596b957 2022-07-14 tracey 	default:
 81 a596b957 2022-07-14 tracey 		break;
 82 a596b957 2022-07-14 tracey 	}
 83 a596b957 2022-07-14 tracey 
 84 a596b957 2022-07-14 tracey 	c->buf_len += n;
 85 a596b957 2022-07-14 tracey 
 86 a596b957 2022-07-14 tracey 	/*
 87 a596b957 2022-07-14 tracey 	 * Parse the records as they are received. Per the FastCGI
 88 a596b957 2022-07-14 tracey 	 * specification, the server need only receive the FastCGI
 89 a596b957 2022-07-14 tracey 	 * parameter records in full; it is free to begin execution
 90 a596b957 2022-07-14 tracey 	 * at that point, which is what happens here.
 91 a596b957 2022-07-14 tracey 	 */
 92 a596b957 2022-07-14 tracey 	do {
 93 a596b957 2022-07-14 tracey 		parsed = fcgi_parse_record(c->buf + c->buf_pos, c->buf_len, c);
 94 a596b957 2022-07-14 tracey 		if (parsed != 0) {
 95 a596b957 2022-07-14 tracey 			c->buf_pos += parsed;
 96 a596b957 2022-07-14 tracey 			c->buf_len -= parsed;
 97 a596b957 2022-07-14 tracey 		}
 98 a596b957 2022-07-14 tracey 
 99 5add7f42 2023-03-10 op 		/* drop the parsed record */
100 5add7f42 2023-03-10 op 		if (parsed != 0 && c->buf_len > 0) {
101 a596b957 2022-07-14 tracey 			bcopy(c->buf + c->buf_pos, c->buf, c->buf_len);
102 a596b957 2022-07-14 tracey 			c->buf_pos = 0;
103 a596b957 2022-07-14 tracey 		}
104 5add7f42 2023-03-10 op 	} while (parsed > 0 && c->buf_len > 0);
105 5add7f42 2023-03-10 op 
106 a596b957 2022-07-14 tracey 	return;
107 a596b957 2022-07-14 tracey fail:
108 a596b957 2022-07-14 tracey 	fcgi_cleanup_request(c);
109 a596b957 2022-07-14 tracey }
110 a596b957 2022-07-14 tracey 
111 a596b957 2022-07-14 tracey size_t
112 a596b957 2022-07-14 tracey fcgi_parse_record(uint8_t *buf, size_t n, struct request *c)
113 a596b957 2022-07-14 tracey {
114 a596b957 2022-07-14 tracey 	struct fcgi_record_header *h;
115 a596b957 2022-07-14 tracey 
116 a596b957 2022-07-14 tracey 	if (n < sizeof(struct fcgi_record_header))
117 a596b957 2022-07-14 tracey 		 return 0;
118 a596b957 2022-07-14 tracey 
119 a596b957 2022-07-14 tracey 	h = (struct fcgi_record_header*) buf;
120 a596b957 2022-07-14 tracey 
121 a596b957 2022-07-14 tracey 	dump_fcgi_record("", h);
122 a596b957 2022-07-14 tracey 
123 a596b957 2022-07-14 tracey 	if (n < sizeof(struct fcgi_record_header) + ntohs(h->content_len)
124 a596b957 2022-07-14 tracey 	    + h->padding_len)
125 a596b957 2022-07-14 tracey 		 return 0;
126 a596b957 2022-07-14 tracey 
127 a596b957 2022-07-14 tracey 	if (h->version != 1)
128 a596b957 2022-07-14 tracey 		log_warn("wrong version");
129 a596b957 2022-07-14 tracey 
130 a596b957 2022-07-14 tracey 	switch (h->type) {
131 a596b957 2022-07-14 tracey 	case FCGI_BEGIN_REQUEST:
132 a596b957 2022-07-14 tracey 		fcgi_parse_begin_request(buf +
133 a596b957 2022-07-14 tracey 		    sizeof(struct fcgi_record_header),
134 a596b957 2022-07-14 tracey 		    ntohs(h->content_len), c, ntohs(h->id));
135 a596b957 2022-07-14 tracey 		break;
136 a596b957 2022-07-14 tracey 	case FCGI_PARAMS:
137 a596b957 2022-07-14 tracey 		fcgi_parse_params(buf + sizeof(struct fcgi_record_header),
138 a596b957 2022-07-14 tracey 		    ntohs(h->content_len), c, ntohs(h->id));
139 a596b957 2022-07-14 tracey 		break;
140 a596b957 2022-07-14 tracey 	case FCGI_STDIN:
141 a596b957 2022-07-14 tracey 	case FCGI_ABORT_REQUEST:
142 a596b957 2022-07-14 tracey 		fcgi_create_end_record(c);
143 a596b957 2022-07-14 tracey 		fcgi_cleanup_request(c);
144 a596b957 2022-07-14 tracey 		return 0;
145 a596b957 2022-07-14 tracey 	default:
146 a596b957 2022-07-14 tracey 		log_warn("unimplemented type %d", h->type);
147 a596b957 2022-07-14 tracey 		break;
148 a596b957 2022-07-14 tracey 	}
149 a596b957 2022-07-14 tracey 
150 a596b957 2022-07-14 tracey 	return (sizeof(struct fcgi_record_header) + ntohs(h->content_len)
151 a596b957 2022-07-14 tracey 	    + h->padding_len);
152 a596b957 2022-07-14 tracey }
153 a596b957 2022-07-14 tracey 
154 a596b957 2022-07-14 tracey void
155 a596b957 2022-07-14 tracey fcgi_parse_begin_request(uint8_t *buf, uint16_t n,
156 a596b957 2022-07-14 tracey     struct request *c, uint16_t id)
157 a596b957 2022-07-14 tracey {
158 a596b957 2022-07-14 tracey 	/* XXX -- FCGI_CANT_MPX_CONN */
159 a596b957 2022-07-14 tracey 	if (c->request_started) {
160 a596b957 2022-07-14 tracey 		log_warn("unexpected FCGI_BEGIN_REQUEST, ignoring");
161 a596b957 2022-07-14 tracey 		return;
162 a596b957 2022-07-14 tracey 	}
163 a596b957 2022-07-14 tracey 
164 a596b957 2022-07-14 tracey 	if (n != sizeof(struct fcgi_begin_request_body)) {
165 a596b957 2022-07-14 tracey 		log_warn("wrong size %d != %lu", n,
166 a596b957 2022-07-14 tracey 		    sizeof(struct fcgi_begin_request_body));
167 a596b957 2022-07-14 tracey 		return;
168 a596b957 2022-07-14 tracey 	}
169 a596b957 2022-07-14 tracey 
170 a596b957 2022-07-14 tracey 	c->request_started = 1;
171 a596b957 2022-07-14 tracey 	c->id = id;
172 a596b957 2022-07-14 tracey }
173 a596b957 2022-07-14 tracey 
174 a596b957 2022-07-14 tracey void
175 a596b957 2022-07-14 tracey fcgi_parse_params(uint8_t *buf, uint16_t n, struct request *c, uint16_t id)
176 a596b957 2022-07-14 tracey {
177 a596b957 2022-07-14 tracey 	uint32_t name_len, val_len;
178 c8af7691 2023-06-22 op 	uint8_t *val;
179 a596b957 2022-07-14 tracey 
180 a596b957 2022-07-14 tracey 	if (!c->request_started) {
181 a596b957 2022-07-14 tracey 		log_warn("FCGI_PARAMS without FCGI_BEGIN_REQUEST, ignoring");
182 a596b957 2022-07-14 tracey 		return;
183 a596b957 2022-07-14 tracey 	}
184 a596b957 2022-07-14 tracey 
185 a596b957 2022-07-14 tracey 	if (c->id != id) {
186 a596b957 2022-07-14 tracey 		log_warn("unexpected id, ignoring");
187 a596b957 2022-07-14 tracey 		return;
188 a596b957 2022-07-14 tracey 	}
189 a596b957 2022-07-14 tracey 
190 a596b957 2022-07-14 tracey 	if (n == 0) {
191 a596b957 2022-07-14 tracey 		gotweb_process_request(c);
192 62eab86e 2023-09-13 op 		template_flush(c->tp);
193 a596b957 2022-07-14 tracey 		return;
194 a596b957 2022-07-14 tracey 	}
195 a596b957 2022-07-14 tracey 
196 a596b957 2022-07-14 tracey 	while (n > 0) {
197 a596b957 2022-07-14 tracey 		if (buf[0] >> 7 == 0) {
198 a596b957 2022-07-14 tracey 			name_len = buf[0];
199 a596b957 2022-07-14 tracey 			n--;
200 a596b957 2022-07-14 tracey 			buf++;
201 a596b957 2022-07-14 tracey 		} else {
202 a596b957 2022-07-14 tracey 			if (n > 3) {
203 a596b957 2022-07-14 tracey 				name_len = ((buf[0] & 0x7f) << 24) +
204 a596b957 2022-07-14 tracey 				    (buf[1] << 16) + (buf[2] << 8) + buf[3];
205 a596b957 2022-07-14 tracey 				n -= 4;
206 a596b957 2022-07-14 tracey 				buf += 4;
207 a596b957 2022-07-14 tracey 			} else
208 a596b957 2022-07-14 tracey 				return;
209 a596b957 2022-07-14 tracey 		}
210 a596b957 2022-07-14 tracey 
211 40a95f4f 2022-09-01 op 		if (n == 0)
212 a596b957 2022-07-14 tracey 			return;
213 a596b957 2022-07-14 tracey 
214 40a95f4f 2022-09-01 op 		if (buf[0] >> 7 == 0) {
215 40a95f4f 2022-09-01 op 			val_len = buf[0];
216 40a95f4f 2022-09-01 op 			n--;
217 40a95f4f 2022-09-01 op 			buf++;
218 40a95f4f 2022-09-01 op 		} else {
219 40a95f4f 2022-09-01 op 			if (n > 3) {
220 40a95f4f 2022-09-01 op 				val_len = ((buf[0] & 0x7f) << 24) +
221 40a95f4f 2022-09-01 op 					(buf[1] << 16) + (buf[2] << 8) +
222 40a95f4f 2022-09-01 op 					buf[3];
223 40a95f4f 2022-09-01 op 				n -= 4;
224 40a95f4f 2022-09-01 op 				buf += 4;
225 40a95f4f 2022-09-01 op 			} else
226 40a95f4f 2022-09-01 op 				return;
227 a596b957 2022-07-14 tracey 		}
228 a596b957 2022-07-14 tracey 
229 40a95f4f 2022-09-01 op 		if (n < name_len + val_len)
230 a596b957 2022-07-14 tracey 			return;
231 a596b957 2022-07-14 tracey 
232 40a95f4f 2022-09-01 op 		val = buf + name_len;
233 a596b957 2022-07-14 tracey 
234 40a95f4f 2022-09-01 op 		if (c->querystring[0] == '\0' &&
235 40a95f4f 2022-09-01 op 		    val_len < MAX_QUERYSTRING &&
236 40a95f4f 2022-09-01 op 		    name_len == 12 &&
237 40a95f4f 2022-09-01 op 		    strncmp(buf, "QUERY_STRING", 12) == 0) {
238 40a95f4f 2022-09-01 op 			memcpy(c->querystring, val, val_len);
239 a596b957 2022-07-14 tracey 			c->querystring[val_len] = '\0';
240 a596b957 2022-07-14 tracey 		}
241 a596b957 2022-07-14 tracey 
242 d19d9fce 2022-12-20 op 		if (c->document_uri[0] == '\0' &&
243 d19d9fce 2022-12-20 op 		    val_len < MAX_DOCUMENT_URI &&
244 d19d9fce 2022-12-20 op 		    name_len == 12 &&
245 d19d9fce 2022-12-20 op 		    strncmp(buf, "DOCUMENT_URI", 12) == 0) {
246 d19d9fce 2022-12-20 op 			memcpy(c->document_uri, val, val_len);
247 d19d9fce 2022-12-20 op 			c->document_uri[val_len] = '\0';
248 a596b957 2022-07-14 tracey 		}
249 40a95f4f 2022-09-01 op 
250 40a95f4f 2022-09-01 op 		if (c->server_name[0] == '\0' &&
251 40a95f4f 2022-09-01 op 		    val_len < MAX_SERVER_NAME &&
252 40a95f4f 2022-09-01 op 		    name_len == 11 &&
253 40a95f4f 2022-09-01 op 		    strncmp(buf, "SERVER_NAME", 11) == 0) {
254 40a95f4f 2022-09-01 op 			memcpy(c->server_name, val, val_len);
255 a596b957 2022-07-14 tracey 			c->server_name[val_len] = '\0';
256 a596b957 2022-07-14 tracey 		}
257 1abb18e1 2022-12-20 op 
258 1abb18e1 2022-12-20 op 		if (name_len == 5 &&
259 1abb18e1 2022-12-20 op 		    strncmp(buf, "HTTPS", 5) == 0)
260 1abb18e1 2022-12-20 op 			c->https = 1;
261 a596b957 2022-07-14 tracey 
262 40a95f4f 2022-09-01 op 		buf += name_len + val_len;
263 40a95f4f 2022-09-01 op 		n -= name_len - val_len;
264 a596b957 2022-07-14 tracey 	}
265 a596b957 2022-07-14 tracey }
266 a596b957 2022-07-14 tracey 
267 a596b957 2022-07-14 tracey void
268 a596b957 2022-07-14 tracey fcgi_timeout(int fd, short events, void *arg)
269 a596b957 2022-07-14 tracey {
270 a596b957 2022-07-14 tracey 	fcgi_cleanup_request((struct request*) arg);
271 ed619ca0 2022-12-14 op }
272 ed619ca0 2022-12-14 op 
273 3ff00ead 2022-08-09 op static int
274 311b7e33 2022-08-01 op send_response(struct request *c, int type, const uint8_t *data,
275 311b7e33 2022-08-01 op     size_t len)
276 a596b957 2022-07-14 tracey {
277 311b7e33 2022-08-01 op 	static const uint8_t padding[FCGI_PADDING_SIZE];
278 311b7e33 2022-08-01 op 	struct fcgi_record_header header;
279 311b7e33 2022-08-01 op 	struct iovec iov[3];
280 a596b957 2022-07-14 tracey 	struct timespec ts;
281 cb8b8986 2022-07-28 op 	ssize_t nw;
282 311b7e33 2022-08-01 op 	size_t padded_len, tot;
283 311b7e33 2022-08-01 op 	int i, err = 0, th = 2000;
284 a596b957 2022-07-14 tracey 
285 a596b957 2022-07-14 tracey 	ts.tv_sec = 0;
286 a596b957 2022-07-14 tracey 	ts.tv_nsec = 50;
287 a596b957 2022-07-14 tracey 
288 311b7e33 2022-08-01 op 	memset(&header, 0, sizeof(header));
289 311b7e33 2022-08-01 op 	header.version = 1;
290 311b7e33 2022-08-01 op 	header.type = type;
291 311b7e33 2022-08-01 op 	header.id = htons(c->id);
292 311b7e33 2022-08-01 op 	header.content_len = htons(len);
293 a596b957 2022-07-14 tracey 
294 a596b957 2022-07-14 tracey 	/* The FastCGI spec suggests to align the output buffer */
295 311b7e33 2022-08-01 op 	tot = sizeof(header) + len;
296 311b7e33 2022-08-01 op 	padded_len = FCGI_ALIGN(tot);
297 311b7e33 2022-08-01 op 	if (padded_len > tot) {
298 311b7e33 2022-08-01 op 		header.padding_len = padded_len - tot;
299 311b7e33 2022-08-01 op 		tot += header.padding_len;
300 a596b957 2022-07-14 tracey 	}
301 a596b957 2022-07-14 tracey 
302 311b7e33 2022-08-01 op 	iov[0].iov_base = &header;
303 311b7e33 2022-08-01 op 	iov[0].iov_len = sizeof(header);
304 a596b957 2022-07-14 tracey 
305 311b7e33 2022-08-01 op 	iov[1].iov_base = (void *)data;
306 311b7e33 2022-08-01 op 	iov[1].iov_len = len;
307 311b7e33 2022-08-01 op 
308 311b7e33 2022-08-01 op 	iov[2].iov_base = (void *)padding;
309 311b7e33 2022-08-01 op 	iov[2].iov_len = header.padding_len;
310 311b7e33 2022-08-01 op 
311 311b7e33 2022-08-01 op 	dump_fcgi_record("resp ", &header);
312 311b7e33 2022-08-01 op 
313 a596b957 2022-07-14 tracey 	/*
314 a596b957 2022-07-14 tracey 	 * XXX: add some simple write heuristics here
315 a596b957 2022-07-14 tracey 	 * On slower VMs, spotty connections, etc., we don't want to go right to
316 a596b957 2022-07-14 tracey 	 * disconnect. Let's at least try to write the data a few times before
317 a596b957 2022-07-14 tracey 	 * giving up.
318 a596b957 2022-07-14 tracey 	 */
319 311b7e33 2022-08-01 op 	while (tot > 0) {
320 311b7e33 2022-08-01 op 		nw = writev(c->fd, iov, nitems(iov));
321 cb8b8986 2022-07-28 op 		if (nw == 0) {
322 cb8b8986 2022-07-28 op 			c->sock->client_status = CLIENT_DISCONNECT;
323 cb8b8986 2022-07-28 op 			break;
324 cb8b8986 2022-07-28 op 		}
325 cb8b8986 2022-07-28 op 		if (nw == -1) {
326 cb8b8986 2022-07-28 op 			err++;
327 cb8b8986 2022-07-28 op 			if (errno == EAGAIN && err < th) {
328 cb8b8986 2022-07-28 op 				nanosleep(&ts, NULL);
329 cb8b8986 2022-07-28 op 				continue;
330 cb8b8986 2022-07-28 op 			}
331 8a078d7f 2023-05-17 op 			log_debug("%s: write failure: %s", __func__,
332 8a078d7f 2023-05-17 op 			    strerror(errno));
333 a596b957 2022-07-14 tracey 			c->sock->client_status = CLIENT_DISCONNECT;
334 3ff00ead 2022-08-09 op 			return -1;
335 a596b957 2022-07-14 tracey 		}
336 cb8b8986 2022-07-28 op 
337 311b7e33 2022-08-01 op 		if (nw != tot)
338 311b7e33 2022-08-01 op 			log_debug("%s: partial write: %zu vs %zu", __func__,
339 311b7e33 2022-08-01 op 			    nw, tot);
340 311b7e33 2022-08-01 op 
341 311b7e33 2022-08-01 op 		tot -= nw;
342 311b7e33 2022-08-01 op 		for (i = 0; i < nitems(iov); ++i) {
343 311b7e33 2022-08-01 op 			if (nw < iov[i].iov_len) {
344 311b7e33 2022-08-01 op 				iov[i].iov_base += nw;
345 311b7e33 2022-08-01 op 				iov[i].iov_len -= nw;
346 311b7e33 2022-08-01 op 				break;
347 311b7e33 2022-08-01 op 			}
348 311b7e33 2022-08-01 op 			nw -= iov[i].iov_len;
349 311b7e33 2022-08-01 op 			iov[i].iov_len = 0;
350 311b7e33 2022-08-01 op 		}
351 a596b957 2022-07-14 tracey 	}
352 3ff00ead 2022-08-09 op 
353 3ff00ead 2022-08-09 op 	return 0;
354 311b7e33 2022-08-01 op }
355 a596b957 2022-07-14 tracey 
356 3ff00ead 2022-08-09 op int
357 311b7e33 2022-08-01 op fcgi_send_response(struct request *c, int type, const void *data,
358 311b7e33 2022-08-01 op     size_t len)
359 311b7e33 2022-08-01 op {
360 3ff00ead 2022-08-09 op 	if (c->sock->client_status == CLIENT_DISCONNECT)
361 3ff00ead 2022-08-09 op 		return -1;
362 3ff00ead 2022-08-09 op 
363 311b7e33 2022-08-01 op 	while (len > FCGI_CONTENT_SIZE) {
364 3ff00ead 2022-08-09 op 		if (send_response(c, type, data, len) == -1)
365 3ff00ead 2022-08-09 op 			return -1;
366 311b7e33 2022-08-01 op 
367 311b7e33 2022-08-01 op 		data += FCGI_CONTENT_SIZE;
368 311b7e33 2022-08-01 op 		len -= FCGI_CONTENT_SIZE;
369 311b7e33 2022-08-01 op 	}
370 311b7e33 2022-08-01 op 
371 311b7e33 2022-08-01 op 	if (len == 0)
372 3ff00ead 2022-08-09 op 		return 0;
373 311b7e33 2022-08-01 op 
374 3ff00ead 2022-08-09 op 	return send_response(c, type, data, len);
375 a596b957 2022-07-14 tracey }
376 a596b957 2022-07-14 tracey 
377 62eab86e 2023-09-13 op int
378 62eab86e 2023-09-13 op fcgi_write(void *arg, const void *buf, size_t len)
379 62eab86e 2023-09-13 op {
380 62eab86e 2023-09-13 op 	struct request	*c = arg;
381 62eab86e 2023-09-13 op 
382 62eab86e 2023-09-13 op 	return fcgi_send_response(c, FCGI_STDOUT, buf, len);
383 62eab86e 2023-09-13 op }
384 62eab86e 2023-09-13 op 
385 a596b957 2022-07-14 tracey void
386 a596b957 2022-07-14 tracey fcgi_create_end_record(struct request *c)
387 a596b957 2022-07-14 tracey {
388 311b7e33 2022-08-01 op 	struct fcgi_end_request_body end_request;
389 a596b957 2022-07-14 tracey 
390 311b7e33 2022-08-01 op 	memset(&end_request, 0, sizeof(end_request));
391 311b7e33 2022-08-01 op 	end_request.app_status = htonl(0); /* script status */
392 311b7e33 2022-08-01 op 	end_request.protocol_status = FCGI_REQUEST_COMPLETE;
393 311b7e33 2022-08-01 op 
394 311b7e33 2022-08-01 op 	fcgi_send_response(c, FCGI_END_REQUEST, &end_request,
395 311b7e33 2022-08-01 op 	    sizeof(end_request));
396 a596b957 2022-07-14 tracey }
397 a596b957 2022-07-14 tracey 
398 a596b957 2022-07-14 tracey void
399 a596b957 2022-07-14 tracey fcgi_cleanup_request(struct request *c)
400 a596b957 2022-07-14 tracey {
401 a596b957 2022-07-14 tracey 	cgi_inflight--;
402 a596b957 2022-07-14 tracey 	client_cnt--;
403 a596b957 2022-07-14 tracey 
404 a596b957 2022-07-14 tracey 	evtimer_del(&c->tmo);
405 a596b957 2022-07-14 tracey 	if (event_initialized(&c->ev))
406 a596b957 2022-07-14 tracey 		event_del(&c->ev);
407 a596b957 2022-07-14 tracey 
408 a596b957 2022-07-14 tracey 	close(c->fd);
409 ed619ca0 2022-12-14 op 	template_free(c->tp);
410 5add7f42 2023-03-10 op 	if (c->t != NULL)
411 5add7f42 2023-03-10 op 		gotweb_free_transport(c->t);
412 a596b957 2022-07-14 tracey 	free(c);
413 a596b957 2022-07-14 tracey }
414 a596b957 2022-07-14 tracey 
415 a596b957 2022-07-14 tracey void
416 a596b957 2022-07-14 tracey dump_fcgi_record(const char *p, struct fcgi_record_header *h)
417 a596b957 2022-07-14 tracey {
418 a596b957 2022-07-14 tracey 	dump_fcgi_record_header(p, h);
419 a596b957 2022-07-14 tracey 
420 a596b957 2022-07-14 tracey 	if (h->type == FCGI_BEGIN_REQUEST)
421 a596b957 2022-07-14 tracey 		dump_fcgi_begin_request_body(p,
422 a596b957 2022-07-14 tracey 		    (struct fcgi_begin_request_body *)(h + 1));
423 a596b957 2022-07-14 tracey 	else if (h->type == FCGI_END_REQUEST)
424 a596b957 2022-07-14 tracey 		dump_fcgi_end_request_body(p,
425 a596b957 2022-07-14 tracey 		    (struct fcgi_end_request_body *)(h + 1));
426 a596b957 2022-07-14 tracey }
427 a596b957 2022-07-14 tracey 
428 a596b957 2022-07-14 tracey void
429 a596b957 2022-07-14 tracey dump_fcgi_record_header(const char* p, struct fcgi_record_header *h)
430 a596b957 2022-07-14 tracey {
431 a596b957 2022-07-14 tracey 	log_debug("%sversion:         %d", p, h->version);
432 a596b957 2022-07-14 tracey 	log_debug("%stype:            %d", p, h->type);
433 a596b957 2022-07-14 tracey 	log_debug("%srequestId:       %d", p, ntohs(h->id));
434 a596b957 2022-07-14 tracey 	log_debug("%scontentLength:   %d", p, ntohs(h->content_len));
435 a596b957 2022-07-14 tracey 	log_debug("%spaddingLength:   %d", p, h->padding_len);
436 a596b957 2022-07-14 tracey 	log_debug("%sreserved:        %d", p, h->reserved);
437 a596b957 2022-07-14 tracey }
438 a596b957 2022-07-14 tracey 
439 a596b957 2022-07-14 tracey void
440 a596b957 2022-07-14 tracey dump_fcgi_begin_request_body(const char *p, struct fcgi_begin_request_body *b)
441 a596b957 2022-07-14 tracey {
442 a596b957 2022-07-14 tracey 	log_debug("%srole             %d", p, ntohs(b->role));
443 a596b957 2022-07-14 tracey 	log_debug("%sflags            %d", p, b->flags);
444 a596b957 2022-07-14 tracey }
445 a596b957 2022-07-14 tracey 
446 a596b957 2022-07-14 tracey void
447 a596b957 2022-07-14 tracey dump_fcgi_end_request_body(const char *p, struct fcgi_end_request_body *b)
448 a596b957 2022-07-14 tracey {
449 a596b957 2022-07-14 tracey 	log_debug("%sappStatus:       %d", p, ntohl(b->app_status));
450 a596b957 2022-07-14 tracey 	log_debug("%sprotocolStatus:  %d", p, b->protocol_status);
451 a596b957 2022-07-14 tracey }