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Yann Weber 4 years ago
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+                    GNU AFFERO GENERAL PUBLIC LICENSE
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+                       Version 3, 19 November 2007
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+
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+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+
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+                            Preamble
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+party means to make such an agreement or commitment not to enforce a
485
+patent against the party.
486
+
487
+  If you convey a covered work, knowingly relying on a patent license,
488
+and the Corresponding Source of the work is not available for anyone
489
+to copy, free of charge and under the terms of this License, through a
490
+publicly available network server or other readily accessible means,
491
+then you must either (1) cause the Corresponding Source to be so
492
+available, or (2) arrange to deprive yourself of the benefit of the
493
+patent license for this particular work, or (3) arrange, in a manner
494
+consistent with the requirements of this License, to extend the patent
495
+license to downstream recipients.  "Knowingly relying" means you have
496
+actual knowledge that, but for the patent license, your conveying the
497
+covered work in a country, or your recipient's use of the covered work
498
+in a country, would infringe one or more identifiable patents in that
499
+country that you have reason to believe are valid.
500
+
501
+  If, pursuant to or in connection with a single transaction or
502
+arrangement, you convey, or propagate by procuring conveyance of, a
503
+covered work, and grant a patent license to some of the parties
504
+receiving the covered work authorizing them to use, propagate, modify
505
+or convey a specific copy of the covered work, then the patent license
506
+you grant is automatically extended to all recipients of the covered
507
+work and works based on it.
508
+
509
+  A patent license is "discriminatory" if it does not include within
510
+the scope of its coverage, prohibits the exercise of, or is
511
+conditioned on the non-exercise of one or more of the rights that are
512
+specifically granted under this License.  You may not convey a covered
513
+work if you are a party to an arrangement with a third party that is
514
+in the business of distributing software, under which you make payment
515
+to the third party based on the extent of your activity of conveying
516
+the work, and under which the third party grants, to any of the
517
+parties who would receive the covered work from you, a discriminatory
518
+patent license (a) in connection with copies of the covered work
519
+conveyed by you (or copies made from those copies), or (b) primarily
520
+for and in connection with specific products or compilations that
521
+contain the covered work, unless you entered into that arrangement,
522
+or that patent license was granted, prior to 28 March 2007.
523
+
524
+  Nothing in this License shall be construed as excluding or limiting
525
+any implied license or other defenses to infringement that may
526
+otherwise be available to you under applicable patent law.
527
+
528
+  12. No Surrender of Others' Freedom.
529
+
530
+  If conditions are imposed on you (whether by court order, agreement or
531
+otherwise) that contradict the conditions of this License, they do not
532
+excuse you from the conditions of this License.  If you cannot convey a
533
+covered work so as to satisfy simultaneously your obligations under this
534
+License and any other pertinent obligations, then as a consequence you may
535
+not convey it at all.  For example, if you agree to terms that obligate you
536
+to collect a royalty for further conveying from those to whom you convey
537
+the Program, the only way you could satisfy both those terms and this
538
+License would be to refrain entirely from conveying the Program.
539
+
540
+  13. Remote Network Interaction; Use with the GNU General Public License.
541
+
542
+  Notwithstanding any other provision of this License, if you modify the
543
+Program, your modified version must prominently offer all users
544
+interacting with it remotely through a computer network (if your version
545
+supports such interaction) an opportunity to receive the Corresponding
546
+Source of your version by providing access to the Corresponding Source
547
+from a network server at no charge, through some standard or customary
548
+means of facilitating copying of software.  This Corresponding Source
549
+shall include the Corresponding Source for any work covered by version 3
550
+of the GNU General Public License that is incorporated pursuant to the
551
+following paragraph.
552
+
553
+  Notwithstanding any other provision of this License, you have
554
+permission to link or combine any covered work with a work licensed
555
+under version 3 of the GNU General Public License into a single
556
+combined work, and to convey the resulting work.  The terms of this
557
+License will continue to apply to the part which is the covered work,
558
+but the work with which it is combined will remain governed by version
559
+3 of the GNU General Public License.
560
+
561
+  14. Revised Versions of this License.
562
+
563
+  The Free Software Foundation may publish revised and/or new versions of
564
+the GNU Affero General Public License from time to time.  Such new versions
565
+will be similar in spirit to the present version, but may differ in detail to
566
+address new problems or concerns.
567
+
568
+  Each version is given a distinguishing version number.  If the
569
+Program specifies that a certain numbered version of the GNU Affero General
570
+Public License "or any later version" applies to it, you have the
571
+option of following the terms and conditions either of that numbered
572
+version or of any later version published by the Free Software
573
+Foundation.  If the Program does not specify a version number of the
574
+GNU Affero General Public License, you may choose any version ever published
575
+by the Free Software Foundation.
576
+
577
+  If the Program specifies that a proxy can decide which future
578
+versions of the GNU Affero General Public License can be used, that proxy's
579
+public statement of acceptance of a version permanently authorizes you
580
+to choose that version for the Program.
581
+
582
+  Later license versions may give you additional or different
583
+permissions.  However, no additional obligations are imposed on any
584
+author or copyright holder as a result of your choosing to follow a
585
+later version.
586
+
587
+  15. Disclaimer of Warranty.
588
+
589
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
590
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
591
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
592
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
593
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
594
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
595
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
596
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
597
+
598
+  16. Limitation of Liability.
599
+
600
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
602
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
603
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
604
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
605
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
606
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
607
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
608
+SUCH DAMAGES.
609
+
610
+  17. Interpretation of Sections 15 and 16.
611
+
612
+  If the disclaimer of warranty and limitation of liability provided
613
+above cannot be given local legal effect according to their terms,
614
+reviewing courts shall apply local law that most closely approximates
615
+an absolute waiver of all civil liability in connection with the
616
+Program, unless a warranty or assumption of liability accompanies a
617
+copy of the Program in return for a fee.
618
+
619
+                     END OF TERMS AND CONDITIONS
620
+
621
+            How to Apply These Terms to Your New Programs
622
+
623
+  If you develop a new program, and you want it to be of the greatest
624
+possible use to the public, the best way to achieve this is to make it
625
+free software which everyone can redistribute and change under these terms.
626
+
627
+  To do so, attach the following notices to the program.  It is safest
628
+to attach them to the start of each source file to most effectively
629
+state the exclusion of warranty; and each file should have at least
630
+the "copyright" line and a pointer to where the full notice is found.
631
+
632
+    <one line to give the program's name and a brief idea of what it does.>
633
+    Copyright (C) <year>  <name of author>
634
+
635
+    This program is free software: you can redistribute it and/or modify
636
+    it under the terms of the GNU Affero General Public License as published by
637
+    the Free Software Foundation, either version 3 of the License, or
638
+    (at your option) any later version.
639
+
640
+    This program is distributed in the hope that it will be useful,
641
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
642
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
643
+    GNU Affero General Public License for more details.
644
+
645
+    You should have received a copy of the GNU Affero General Public License
646
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
647
+
648
+Also add information on how to contact you by electronic and paper mail.
649
+
650
+  If your software can interact with users remotely through a computer
651
+network, you should also make sure that it provides a way for users to
652
+get its source.  For example, if your program is a web application, its
653
+interface could display a "Source" link that leads users to an archive
654
+of the code.  There are many ways you could offer source, and different
655
+solutions will be better for different programs; see section 13 for the
656
+specific requirements.
657
+
658
+  You should also get your employer (if you work as a programmer) or school,
659
+if any, to sign a "copyright disclaimer" for the program, if necessary.
660
+For more information on this, and how to apply and follow the GNU AGPL, see
661
+<https://www.gnu.org/licenses/>.

+ 7
- 0
Makefile View File

@@ -0,0 +1,7 @@
1
+all:
2
+	+make -C src
3
+
4
+.PHONY: clean
5
+
6
+clean:
7
+	make -C src clean

+ 4
- 0
README.txt View File

@@ -0,0 +1,4 @@
1
+make
2
+PY_ENTRYPOINT='foo' spawn-fcgi -d . -n src/pyfcgi -p 9000 -a 127.0.0.1
3
+
4
+TODO: write a readme

+ 12
- 0
foo.py View File

@@ -0,0 +1,12 @@
1
+import sys
2
+import os
3
+import time
4
+
5
+def entrypoint():
6
+	sys.stderr.write('Called ! req by %s' % os.getenv('REQUEST_METHOD'))
7
+	sys.stderr.flush()
8
+	env = "foo"
9
+	env = ', '.join(os.environ.keys())
10
+	msg = "Content-Type: text/html\r\n\r\nHello world !(%0.2f)\nenv : %s" % (time.time(), env)
11
+	sys.stdout.write(msg)
12
+	sys.stdout.flush()

+ 45
- 0
includes_python3.7m.patch View File

@@ -0,0 +1,45 @@
1
+diff -rupN python3.7m/bytesobject.h python3.7m_patched/bytesobject.h
2
+--- python3.7m/bytesobject.h	2019-06-30 07:43:17.201934475 +0200
3
++++ python3.7m_patched/bytesobject.h	2019-06-29 20:16:35.360347551 +0200
4
+@@ -52,9 +52,9 @@ PyAPI_FUNC(PyObject *) PyBytes_FromStrin
5
+ PyAPI_FUNC(PyObject *) PyBytes_FromString(const char *);
6
+ PyAPI_FUNC(PyObject *) PyBytes_FromObject(PyObject *);
7
+ PyAPI_FUNC(PyObject *) PyBytes_FromFormatV(const char*, va_list)
8
+-                                Py_GCC_ATTRIBUTE((format(printf, 1, 0)));
9
++                                Py_GCC_ATTRIBUTE((format(__printf__, 1, 0)));
10
+ PyAPI_FUNC(PyObject *) PyBytes_FromFormat(const char*, ...)
11
+-                                Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
12
++                                Py_GCC_ATTRIBUTE((format(__printf__, 1, 2)));
13
+ PyAPI_FUNC(Py_ssize_t) PyBytes_Size(PyObject *);
14
+ PyAPI_FUNC(char *) PyBytes_AsString(PyObject *);
15
+ PyAPI_FUNC(PyObject *) PyBytes_Repr(PyObject *, int);
16
+diff -rupN python3.7m/pyerrors.h python3.7m_patched/pyerrors.h
17
+--- python3.7m/pyerrors.h	2019-06-30 07:43:17.201934475 +0200
18
++++ python3.7m_patched/pyerrors.h	2019-06-29 20:16:35.360347551 +0200
19
+@@ -494,9 +494,9 @@ PyAPI_FUNC(int) PyUnicodeTranslateError_
20
+ 
21
+ #include <stdarg.h>
22
+ PyAPI_FUNC(int) PyOS_snprintf(char *str, size_t size, const char  *format, ...)
23
+-                        Py_GCC_ATTRIBUTE((format(printf, 3, 4)));
24
++                        Py_GCC_ATTRIBUTE((format(__printf__, 3, 4)));
25
+ PyAPI_FUNC(int) PyOS_vsnprintf(char *str, size_t size, const char  *format, va_list va)
26
+-                        Py_GCC_ATTRIBUTE((format(printf, 3, 0)));
27
++                        Py_GCC_ATTRIBUTE((format(__printf__, 3, 0)));
28
+ 
29
+ #ifdef __cplusplus
30
+ }
31
+diff -rupN python3.7m/sysmodule.h python3.7m_patched/sysmodule.h
32
+--- python3.7m/sysmodule.h	2019-06-30 07:43:17.205934339 +0200
33
++++ python3.7m_patched/sysmodule.h	2019-06-29 20:16:35.360347551 +0200
34
+@@ -19,9 +19,9 @@ PyAPI_FUNC(void) PySys_SetArgvEx(int, wc
35
+ PyAPI_FUNC(void) PySys_SetPath(const wchar_t *);
36
+ 
37
+ PyAPI_FUNC(void) PySys_WriteStdout(const char *format, ...)
38
+-                 Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
39
++                 Py_GCC_ATTRIBUTE((format(__printf__, 1, 2)));
40
+ PyAPI_FUNC(void) PySys_WriteStderr(const char *format, ...)
41
+-                 Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
42
++                 Py_GCC_ATTRIBUTE((format(__printf__, 1, 2)));
43
+ PyAPI_FUNC(void) PySys_FormatStdout(const char *format, ...);
44
+ PyAPI_FUNC(void) PySys_FormatStderr(const char *format, ...);
45
+ 

+ 21
- 0
src/Makefile View File

@@ -0,0 +1,21 @@
1
+CC=gcc
2
+CFLAGS=-c -Wall `python3-config --includes`
3
+#CFLAGS=-c -Wall -Werror `python3-config --includes`
4
+LDFLAGS=`python3-config --libs` -lfcgi
5
+#LDFLAGS= -L`python3-config --configdir` `python3-config --libs` -lfcgi
6
+
7
+SRCS=$(wildcard *.c)
8
+OBJS=$(SRCS:.c=.o)
9
+
10
+all: pyfcgi
11
+
12
+pyfcgi: $(OBJS)
13
+	$(CC) $(LDFLAGS) -o $@ $^
14
+
15
+%.o: %.c
16
+	$(CC) $(CFLAGS) -o $@ $<
17
+
18
+.PHONY: clean
19
+
20
+clean:
21
+	@rm -v $(OBJS)

+ 19
- 0
src/config.h View File

@@ -0,0 +1,19 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+#define _GNU_SOURCE

+ 96
- 0
src/main.c View File

@@ -0,0 +1,96 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+#include <fcgi_stdio.h> /* fcgi library; put it first*/
20
+
21
+#include <unistd.h>
22
+#include <stdlib.h>
23
+#include <syslog.h>
24
+#include <string.h>
25
+#include <errno.h>
26
+#include <sys/types.h>
27
+#include <sys/wait.h>
28
+
29
+#include "responder.h"
30
+
31
+#define IDENT_FMT "pyfcgi[%d]"
32
+#define MAX_REQS 5
33
+
34
+#define EARLY_ERR(err_str) write(2, err_str, strlen(err_str))
35
+
36
+int main(int argc, char **argv)
37
+{
38
+	char *ident, *py_entrypoint;
39
+	size_t ident_len;
40
+	pid_t child;
41
+	int child_ret;
42
+	unsigned int emerg_sleep = 3;
43
+
44
+	py_entrypoint = getenv("PY_ENTRYPOINT");
45
+	if(argc > 1 || !py_entrypoint)
46
+	{
47
+		EARLY_ERR("Usage : PY_ENTRYPOINT='PATH.py' spawn-fcgi [OPTIONS] ");
48
+		EARLY_ERR(argv[0]);
49
+		EARLY_ERR("\n");
50
+		return 1;
51
+	}
52
+
53
+	ident_len = snprintf(NULL, 0, IDENT_FMT, getpid());
54
+	ident_len++;
55
+	ident = malloc(sizeof(char)*ident_len);
56
+	if(ident == NULL)
57
+	{
58
+		EARLY_ERR("Unable to allocate memory for ident string...\n");
59
+		return -1;
60
+	}
61
+
62
+	snprintf(ident, ident_len, IDENT_FMT, getpid());
63
+
64
+	openlog(ident, LOG_CONS | LOG_PERROR, LOG_DAEMON | LOG_USER);
65
+	syslog(LOG_INFO, "New server started");
66
+
67
+	while(1)
68
+	{
69
+		child = fork();
70
+		if(child == -1)
71
+		{
72
+			// TODO : Error
73
+			syslog(LOG_EMERG, "Failed to fork : '%s' sleeping %ds", strerror(errno), emerg_sleep);
74
+			sleep(emerg_sleep);
75
+			continue;
76
+		}
77
+		else if(!child)
78
+		{
79
+			responder_loop(py_entrypoint, MAX_REQS, 1, 1);
80
+			exit(-1);
81
+		}
82
+		waitpid(child, &child_ret, 0);
83
+		if(child_ret)
84
+		{
85
+			syslog(LOG_ERR, "Responder loop function exits with error code '%d'",
86
+				WEXITSTATUS(child_ret));
87
+		}
88
+		else
89
+		{
90
+			syslog(LOG_NOTICE, "Restarting main process after %d requests", MAX_REQS);
91
+		}
92
+	}
93
+
94
+	closelog();
95
+	free(ident);
96
+}

+ 581
- 0
src/pyworker.c View File

@@ -0,0 +1,581 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+
20
+#include "pyworker.h"
21
+
22
+static int worker_piper_sigrcv = 0;
23
+
24
+pid_t spawn(char* py_entrypoint, int wrk_id, int semid, int max_reqs)
25
+{
26
+	pid_t res;
27
+
28
+	res = fork();
29
+	if(res == -1)
30
+	{
31
+		syslog(	LOG_ERR, "Fork fails for worker #%d : %s",
32
+			wrk_id, strerror(errno));
33
+		return -1;
34
+	}
35
+	else if(!res)
36
+	{
37
+		// Child process
38
+		exit(work(py_entrypoint, wrk_id, semid, max_reqs));
39
+	}
40
+	syslog(	LOG_INFO,
41
+		"Worker #%d spawned with PID %d", wrk_id, res);
42
+	return res;
43
+}
44
+
45
+int work(char* py_entrypoint, int wrk_id, int semid, int max_reqs)
46
+{
47
+	PyObject *entry_fun;
48
+	int count, pipe_out[2], pipe_err[2], pipe_ctl[2], err, piper_status;
49
+	struct sigaction act;
50
+	sigset_t emptyset;
51
+	char buf[PIPE_BUF];
52
+
53
+
54
+	// preparing sigaction for piper
55
+	if(sigemptyset(&emptyset))
56
+	{
57
+		err = errno;
58
+		syslog(	LOG_ALERT, "sigemptyset fails in piper : %s",
59
+			strerror(err));
60
+		exit(err);
61
+	}
62
+	act.sa_handler = worker_piper_sighandler;
63
+	act.sa_mask = emptyset;
64
+	act.sa_flags = 0;
65
+	act.sa_restorer = NULL;
66
+
67
+
68
+	syslog(	LOG_INFO,
69
+		"Worker %d started", wrk_id);
70
+
71
+	update_python_path(); // add cwd to python path
72
+	Py_Initialize(); // "start" python
73
+	update_python_fd(pipe_out, pipe_err);
74
+	syslog(	LOG_INFO,
75
+		"Worker[%d] Python started", wrk_id);
76
+
77
+	// loading module
78
+	entry_fun = import_entrypoint(py_entrypoint);
79
+
80
+	syslog(	LOG_INFO,
81
+		"Worker[%d] Waiting request with %s.%s()", wrk_id,
82
+		py_entrypoint, PYENTRY_FUNNAME);
83
+
84
+	count = 0;
85
+	while ((!count || count != max_reqs) && FCGI_Accept() >= 0)
86
+	{
87
+		count++;
88
+		syslog(	LOG_INFO,
89
+			"Worker[%d] request %d", wrk_id, count);
90
+		worker_piper_sigrcv = 0;
91
+		pipe(pipe_ctl); //TODO : check for pipe error
92
+		pid_t pid = fork();
93
+		if(pid < 0)
94
+		{
95
+			err = errno;
96
+			syslog(LOG_ALERT,
97
+			       "Worker[%d] req #%d Fork failed for piper : %s",
98
+			       wrk_id, count, strerror(err));
99
+			exit(err);
100
+		}
101
+		if(!pid)
102
+		{
103
+			if(sigaction(WPIPER_SIG, &act, NULL))
104
+			{
105
+				err = errno;
106
+				syslog(	LOG_ALERT, "Unable to sigaction in piper : %s",
107
+					strerror(err));
108
+				exit(err);
109
+			}
110
+			close(pipe_ctl[0]);
111
+			close(pipe_ctl[1]);
112
+	
113
+			worker_piper(wrk_id, count, pipe_out[0], pipe_err[0],
114
+			             pipe_ctl[1]);
115
+			//printf("Content-type: text/html\r\n\r\nHello world !\n");
116
+			exit(1);
117
+		}
118
+		//TODO : update environ !!!
119
+		//TODO : check if pipe_ctl lock is really needed anymore
120
+		close(pipe_ctl[1]);
121
+		PyObject_CallObject(entry_fun, NULL);
122
+		if(PyErr_Occurred())
123
+		{
124
+			log_expt(LOG_ERR);
125
+		}
126
+		else
127
+		{
128
+			syslog(LOG_DEBUG, "Worker[%d] request %d funcall [OK]",
129
+				wrk_id, count);
130
+		}
131
+		//TODO : flush pystdout & pystderr using python
132
+		read(pipe_ctl[0], &buf, 1); // unblock when child ready
133
+syslog(LOG_DEBUG, "PIPER UNLOCK");
134
+		kill(pid, WPIPER_SIG);
135
+		waitpid(pid, &piper_status, 0);
136
+		if(piper_status)
137
+		{
138
+			syslog(LOG_WARNING,
139
+			       "Woker[%d] req #%d piper exited with error status %d",
140
+			       wrk_id, count, piper_status);
141
+		}
142
+		syslog(LOG_DEBUG, "Worker[%d] request %d END [OK]",
143
+			wrk_id, count);
144
+	}
145
+	exit(count == max_reqs ?0:42);
146
+}
147
+
148
+void worker_piper(int wrk_id, int req_id, int pystdout, int pystderr,
149
+	int ctl_pipe)
150
+{
151
+	struct pollfd fds[2];
152
+	int err, poll_ret, ret, cont;
153
+	short revents;
154
+	char buf[PIPE_BUF];
155
+
156
+	syslog(LOG_DEBUG, "Worker[%d] req #%d piper", wrk_id, req_id);
157
+
158
+	fds[0].fd = pystdout;
159
+	fds[1].fd = pystderr;
160
+	fds[0].events = fds[1].events = POLLIN;
161
+	fds[0].revents = fds[1].revents = 0;
162
+
163
+
164
+	cont = 3;
165
+	while(cont)
166
+	{
167
+		poll_ret = poll(fds, 2, 10);
168
+syslog(LOG_DEBUG, "Worler[%d] req #%d poll_ret = %d", wrk_id, req_id, poll_ret);
169
+		if(poll_ret < 0)
170
+		{
171
+			err = errno;
172
+			if(err == EINTR)
173
+			{
174
+				continue;
175
+			}
176
+			syslog( LOG_WARNING, "Poll error : %s",
177
+			        strerror(err));
178
+			fds[0].revents = fds[1].revents = 0;
179
+			continue;
180
+		}
181
+		if(!poll_ret && worker_piper_sigrcv)
182
+		{
183
+			cont--;
184
+			continue;
185
+		}
186
+		if(poll_ret && (revents = fds[0].revents))
187
+		{
188
+			syslog(LOG_DEBUG, "Worker[%d] req #%d STDOUT evt !",
189
+			       wrk_id, req_id);
190
+			poll_ret--;
191
+			if(revents & POLLIN)
192
+			{
193
+				syslog(LOG_DEBUG, "Worker[%d] req #%d POLLIN STDOUT !",
194
+				       wrk_id, req_id);
195
+				while(1)
196
+				{
197
+					ret = read(pystdout, buf, PIPE_BUF);
198
+					syslog(LOG_DEBUG, "Worker[%d] req #%d read(stdout) ret %d",
199
+					       wrk_id, req_id, ret);
200
+					if(ret < 0)
201
+					{
202
+						err = errno;
203
+						if(err == EINTR)
204
+						{
205
+							continue;
206
+						}
207
+						syslog( LOG_ERR,
208
+						        "Error reading python stdout : %s",
209
+							strerror(err));
210
+						exit(err);
211
+					}
212
+					buf[ret] = '\0';
213
+					printf("%s", buf);
214
+					break;
215
+				}
216
+			}
217
+			//TODO handle other poll events
218
+		}
219
+		if(poll_ret && (revents = fds[1].revents))
220
+		{
221
+			syslog(LOG_DEBUG, "Worker[%d] req #%d STDERR evt !",
222
+			       wrk_id, req_id);
223
+			if(revents & POLLIN)
224
+			{
225
+				syslog(LOG_DEBUG, "Worker[%d] req #%d POLLIN STDERR !",
226
+				       wrk_id, req_id);
227
+				while(1)
228
+				{
229
+					ret = read(pystderr, buf, PIPE_BUF);
230
+					if(ret < 0)
231
+					{
232
+						err = errno;
233
+						if(err == EINTR)
234
+						{
235
+							continue;
236
+						}
237
+						syslog( LOG_ERR,
238
+						        "Error reading python stdout : %s",
239
+							strerror(err));
240
+						exit(err);
241
+					}
242
+					buf[ret] = '\0';
243
+					syslog(LOG_ERR,
244
+					       "Worker[%d] Python error : %s",
245
+					       wrk_id, buf);
246
+					break;
247
+				}
248
+			}
249
+			//TODO handle other poll events
250
+		}
251
+		fds[0].revents = fds[1].revents = 0;
252
+	}
253
+	syslog(LOG_DEBUG, "Worker[%d] req #%d piper exiting...",
254
+	       wrk_id, req_id);
255
+	exit(0);
256
+}
257
+
258
+void worker_piper_sighandler(int signum)
259
+{
260
+	worker_piper_sigrcv = 1;
261
+	syslog(LOG_DEBUG, "SIG");
262
+}
263
+
264
+PyObject* import_entrypoint(char* py_entrypoint)
265
+{
266
+	PyObject *entry_fname, *entry_module, *entry_fun;
267
+	entry_fname = PyUnicode_DecodeFSDefault(py_entrypoint);
268
+	entry_module = PyImport_Import(entry_fname);
269
+	Py_DECREF(entry_fname);
270
+
271
+	if(!entry_module)
272
+	{
273
+		//TODO syslog python error / traceback
274
+		syslog(	LOG_CRIT,
275
+			"Unable to import python file '%s'",
276
+			py_entrypoint);
277
+		syslog( LOG_INFO,
278
+			"%s", getcwd(NULL, 256));
279
+		log_expt(LOG_ERR);
280
+		sleep(1);
281
+		Py_Exit(1);
282
+	}
283
+
284
+	// getting entrypoint function
285
+	entry_fun = PyObject_GetAttrString(entry_module, PYENTRY_FUNNAME);
286
+	Py_DECREF(entry_module);
287
+
288
+	if(!entry_fun)
289
+	{
290
+		//TODO syslog python error / traceback
291
+		syslog(	LOG_CRIT,
292
+			"Unable to import object '%s' from '%s'",
293
+			PYENTRY_FUNNAME, py_entrypoint);
294
+		Py_Exit(2);
295
+	}
296
+	if(!PyCallable_Check(entry_fun))
297
+	{
298
+		syslog( LOG_CRIT,
299
+			"When imported from '%s', '%s' was not a callable",
300
+			py_entrypoint, PYENTRY_FUNNAME);
301
+		Py_Exit(3);
302
+	}
303
+	return entry_fun;
304
+}
305
+
306
+void update_python_path()
307
+{
308
+	wchar_t *ppath, *wcwd, *wtmp;
309
+	char *cwd, *ncwd, *err_fmt;
310
+	size_t wcwd_sz, ppath_sz;
311
+	int err;
312
+	
313
+	// Add a ':' in front of CWD and convert to wchar_t*
314
+	cwd = get_current_dir_name();
315
+	if(!cwd)
316
+	{
317
+		err = errno;
318
+		err_fmt = "Unable to fecth CWD : %s";
319
+		goto update_python_path_err;
320
+	}
321
+	ncwd = malloc(sizeof(char) * (strlen(cwd) + 2));
322
+	if(!ncwd)
323
+	{
324
+		err = errno;
325
+		err_fmt = "Unable to allocate memory for new CWD : %s";
326
+		goto update_python_path_err_cwd;
327
+	}
328
+	ncwd[0] = ':';
329
+	strcpy(ncwd+1, cwd);
330
+	free(cwd);
331
+	cwd = ncwd;
332
+
333
+	wcwd_sz = mbstowcs(NULL, cwd, 0);
334
+	if(wcwd_sz == (size_t)-1)
335
+	{
336
+		err = errno;
337
+		err_fmt = "Unable to convert CWD to wchar : %s";
338
+		goto update_python_path_err_cwd;
339
+	}
340
+	wcwd_sz++;
341
+	wcwd = malloc(sizeof(wchar_t) * wcwd_sz);
342
+	if(!wcwd)
343
+	{
344
+		err = errno;
345
+		err_fmt = "Unable to allocate wchar for CWD : %s";
346
+		goto update_python_path_err_cwd;
347
+
348
+	}
349
+	if(mbstowcs(wcwd, cwd, wcwd_sz) == -1)
350
+	{
351
+		err = errno;
352
+		err_fmt = "Unable to convert CWD to wchar : %s";
353
+		goto update_python_path_err_wcwd;
354
+	}
355
+
356
+	// Fetch, dup & update the python path
357
+	ppath = Py_GetPath();
358
+	if(!ppath)
359
+	{
360
+		if(PyErr_Occurred())
361
+		{
362
+			log_expt(LOG_ALERT);
363
+		}
364
+		else
365
+		{
366
+			syslog(LOG_ALERT, "Unable to fetch python path, got NULL.");
367
+		}
368
+		err_fmt = NULL;
369
+		goto update_python_path_err_wcwd;
370
+	}
371
+	ppath = wcsdup(ppath);
372
+	if(!wcwd)
373
+	{
374
+		err = errno;
375
+		err_fmt = "Unable to dup the python PATH : %s";
376
+		goto update_python_path_err_wcwd;
377
+	}
378
+
379
+	ppath_sz = wcslen(ppath);
380
+	wtmp = realloc(ppath, sizeof(wchar_t) * (ppath_sz + wcwd_sz + 1));
381
+	if(!wtmp)
382
+	{
383
+		err = errno;
384
+		err_fmt = "Unable reallocate new python path : %s";
385
+		goto update_python_path_err_ppath;
386
+	}
387
+	ppath = wtmp;
388
+	wcsncpy(ppath+ppath_sz, wcwd, wcwd_sz);
389
+	Py_SetPath(ppath);
390
+
391
+	free(ppath);
392
+	free(wcwd);
393
+	free(cwd);
394
+
395
+	return;
396
+	
397
+update_python_path_err_ppath:
398
+	free(ppath);
399
+update_python_path_err_wcwd:
400
+	free(wcwd);
401
+update_python_path_err_cwd:
402
+	free(cwd);
403
+update_python_path_err:
404
+	if(err_fmt)
405
+	{
406
+		syslog( LOG_ALERT, err_fmt, strerror(err));
407
+	}
408
+	exit(err);
409
+}
410
+
411
+void update_python_fd(int pipe_out[2], int pipe_err[2])
412
+{
413
+	int pri, err;
414
+	char *err_fmt;
415
+	PyObject *os_mod, *pyfdopen, *args, *new_fd;
416
+
417
+	pri = LOG_ALERT;
418
+
419
+	if(pipe2(pipe_out, O_DIRECT) == -1)
420
+	{
421
+		err = errno;
422
+		err_fmt = "Unable to create pipe for python stdout : %s";
423
+		goto update_python_fd_err;
424
+	}
425
+	if(pipe2(pipe_err, O_DIRECT) == -1)
426
+	{
427
+		err = errno;
428
+		err_fmt = "Unable to create pipe for python stderr : %s";
429
+		goto update_python_fd_err_pipeout;
430
+	}
431
+
432
+	os_mod = PyImport_ImportModule("os");
433
+	if(!os_mod)
434
+	{
435
+		if(PyErr_Occurred())
436
+		{
437
+			log_expt(LOG_ALERT);
438
+		}
439
+		else
440
+		{
441
+			syslog(	LOG_ALERT,
442
+				"Unable to import python os module, got NULL.");
443
+		}
444
+		err_fmt = NULL;
445
+		goto update_python_fd_err_pipes;
446
+	}
447
+	pyfdopen = PyObject_GetAttrString(os_mod, "fdopen");
448
+	Py_DECREF(os_mod);
449
+	if(!pyfdopen)
450
+	{
451
+		if(PyErr_Occurred())
452
+		{
453
+			log_expt(LOG_ALERT);
454
+		}
455
+		else
456
+		{
457
+			syslog(	LOG_ALERT,
458
+				"Unable to fetch os.fdopen() , got NULL.");
459
+		}
460
+		err_fmt = NULL;
461
+		Py_DECREF(os_mod);
462
+		goto update_python_fd_err_pipes;
463
+	}
464
+
465
+	args = Py_BuildValue("is", pipe_out[1], "w");
466
+	if(!args)
467
+	{
468
+		syslog(	LOG_ERR, "Error building values with '%d', '%s' for stdout",
469
+			pipe_out[1], "w");
470
+		log_expt(LOG_ALERT);
471
+		err_fmt = NULL;
472
+		goto update_python_fd_err_fdopen;
473
+	}
474
+	new_fd = PyObject_CallObject(pyfdopen, args);
475
+	if(!new_fd || PyErr_Occurred())
476
+	{
477
+		syslog(	LOG_ERR, "Error calling fdopen(%d, '%s')",
478
+			pipe_out[1], "w");
479
+		log_expt(LOG_ALERT);
480
+		err_fmt = NULL;
481
+		goto update_python_fd_err_args;
482
+	}
483
+	Py_DECREF(args);
484
+	if(PySys_SetObject("stdout", new_fd))
485
+	{
486
+		syslog(LOG_ERR, "Unable to set sys.stdout");
487
+		log_expt(LOG_ALERT);
488
+		goto update_python_fd_err_newfd;
489
+	}
490
+	Py_DECREF(new_fd);
491
+
492
+	args = Py_BuildValue("is", pipe_err[1], "w");
493
+	if(!args)
494
+	{
495
+		syslog(	LOG_ERR, "Error building values with '%d', '%s' for stderr",
496
+			pipe_out[1], "w");
497
+		log_expt(LOG_ALERT);
498
+		err_fmt = NULL;
499
+		goto update_python_fd_err_fdopen;
500
+	}
501
+	new_fd = PyObject_CallObject(pyfdopen, args);
502
+	if(!new_fd || PyErr_Occurred())
503
+	{
504
+		syslog(	LOG_ERR, "Error calling fdopen(%d, '%s')",
505
+			pipe_out[1], "w");
506
+		log_expt(LOG_ALERT);
507
+		err_fmt = NULL;
508
+		goto update_python_fd_err_args;
509
+	}
510
+	Py_DECREF(args);
511
+	if(PySys_SetObject("stderr", new_fd))
512
+	{
513
+		syslog(LOG_ERR, "Unable to set sys.stderr");
514
+		log_expt(LOG_ALERT);
515
+		goto update_python_fd_err_newfd;
516
+	}
517
+	Py_DECREF(new_fd);
518
+
519
+	return;
520
+
521
+update_python_fd_err_newfd:
522
+	Py_DECREF(new_fd);
523
+update_python_fd_err_args:
524
+	Py_DECREF(args);
525
+update_python_fd_err_fdopen:
526
+	Py_DECREF(fdopen);
527
+update_python_fd_err_pipes:
528
+	close(pipe_err[0]);
529
+	close(pipe_err[1]);
530
+update_python_fd_err_pipeout:
531
+	close(pipe_out[0]);
532
+	close(pipe_out[1]);
533
+update_python_fd_err:
534
+	if(err_fmt)
535
+	{
536
+		syslog(pri, err_fmt, strerror(err));
537
+	}
538
+	exit(1);
539
+}
540
+
541
+void log_expt(int priority)
542
+{
543
+	if(!PyErr_Occurred())
544
+	{
545
+		syslog(priority, "No exception");
546
+		return;
547
+	}
548
+
549
+	PyObject *expt, *expt_str, *expt_bytes, *expt_cls,
550
+		*expt_val, *expt_type, *traceback;
551
+	char *msg, *type, *val;
552
+	int msg_sz;
553
+	char msg_fmt[] = "%s: %s";
554
+
555
+	PyErr_Fetch(&expt_cls, &expt, &traceback);
556
+
557
+	// Fetching exception message using __str__()
558
+	expt_str = PyObject_GetAttrString(expt, "__str__");
559
+	if(!expt_str)
560
+	{
561
+		syslog(LOG_ERR, "Unable to fetch __str__ from exception");
562
+	}
563
+	expt_val = PyObject_CallObject(expt_str, NULL);
564
+	expt_bytes = PyUnicode_AsUTF8String(expt_val);
565
+
566
+	msg = PyBytes_AsString(expt_bytes);
567
+	val = strndup(msg, 1024); // TODO check out of mem if !val
568
+
569
+	// Fetching exception class name
570
+	expt_type = PyObject_GetAttrString(expt_cls, "__name__");
571
+	expt_bytes = PyUnicode_AsUTF8String(expt_type);
572
+	msg = PyBytes_AsString(expt_bytes);
573
+	type = strndup(msg, 1024); // TODO check out of mem if !type
574
+
575
+	msg_sz = snprintf(NULL, 0, msg_fmt, type, val);
576
+	msg_sz++;
577
+	msg = malloc(sizeof(char) * msg_sz);
578
+	snprintf(msg, msg_sz, msg_fmt, type, val);
579
+
580
+	syslog(priority, msg);
581
+}

+ 97
- 0
src/pyworker.h View File

@@ -0,0 +1,97 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+#ifndef _PYWORKER__H___
20
+#define _PYWORKER__H___
21
+
22
+#include "config.h"
23
+
24
+#include <fcgi_stdio.h> /* fcgi library; put it first*/
25
+
26
+#define PY_SSIZE_T_CLEAN
27
+#include <Python.h>
28
+
29
+
30
+#include <unistd.h>
31
+#include <fcntl.h>
32
+#include <syslog.h>
33
+#include <signal.h>
34
+#include <limits.h>
35
+#include <poll.h>
36
+#include <sys/types.h>
37
+#include <sys/wait.h>
38
+
39
+#define EXIT_PYERR 42
40
+#define WPIPER_SIG 30
41
+#define PYENTRY_FUNNAME "entrypoint"
42
+
43
+typedef unsigned long int pywrkid_t;
44
+
45
+/**@brief Spawn a worker given an entrypoint
46
+ *
47
+ * Spawn a new worker process and prepare ENV & request forwarding
48
+ * @param char* python_entrypoint a path to a python entrypoint
49
+ * @param int worker uid
50
+ * @param int semid for FCGI access
51
+ * @param int max request before worker restart
52
+ * @return child PID
53
+ */
54
+pid_t spawn(char*, int, int, int);
55
+
56
+/**@brief the function that initialize the python worker
57
+ * @param char* python_entrypoint a path to a python entrypoint
58
+ * @param int worker uid
59
+ * @param int semid for FCGI access
60
+ * @param int max request before worker restart
61
+ * @return 0 if exit avec max requests
62
+ */
63
+int work(char*, int, int, int);
64
+
65
+/**@brief function for a subprocess designed to read stdin & stdout from
66
+ * python & forward them to syslog or FCGI
67
+ * @param int worker id
68
+ * @param int request id
69
+ * @param int pystdout
70
+ * @param int pystderr
71
+ * @param int ctlpipe a pipe closed when the process is ready
72
+ * @note Exit after signal sent by parent & when poll indicate the pipes are
73
+ * empty
74
+ */
75
+void worker_piper(int, int, int, int, int);
76
+
77
+/**@brief worker piper sigaction handler
78
+ */
79
+void worker_piper_sighandler(int);
80
+
81
+/**@brief Import & return the python entrypoint callable
82
+ */
83
+PyObject* import_entrypoint(char* py_entrypoint);
84
+
85
+/**@brief Add . to the embed pythonpath
86
+ */
87
+void update_python_path();
88
+
89
+/**@brief Create two pipes for stdout & stderr
90
+ * @params int[2] pystdout
91
+ * @params int[2] pystderr
92
+ */
93
+void update_python_fd(int[2], int[2]);
94
+
95
+void log_expt(int priority);
96
+
97
+#endif

+ 100
- 0
src/responder.c View File

@@ -0,0 +1,100 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+#include "responder.h"
20
+int pyfcgi_semid = 0;
21
+
22
+void init_context()
23
+{
24
+	pyfcgi_semid = 0;
25
+}
26
+
27
+
28
+int responder_loop(char *py_entrypoint, unsigned int max_reqs,
29
+	unsigned int min_wrk, unsigned int max_wrk)
30
+{
31
+	unsigned int n_wrk;
32
+	int *wrk_pids;
33
+	int semid, err;
34
+
35
+	syslog(LOG_INFO, "Preparing workers");
36
+
37
+	init_context();
38
+
39
+	wrk_pids = malloc(sizeof(int) * max_wrk);
40
+	if(!wrk_pids)
41
+	{
42
+		err = errno;
43
+		syslog(	LOG_ALERT,
44
+			"Unable to allocate memory for childs PID : %s",
45
+			strerror(err));
46
+		clean_exit(err);
47
+	}
48
+	bzero(wrk_pids, sizeof(int) * max_wrk);
49
+
50
+	semid = new_semaphore();
51
+	
52
+	for(n_wrk=0; n_wrk != min_wrk; n_wrk++)
53
+	{
54
+		wrk_pids[n_wrk] = spawn(py_entrypoint, n_wrk, semid, max_reqs);
55
+	}
56
+	
57
+	//Debug wait & exit
58
+	for(n_wrk=0; n_wrk != min_wrk; n_wrk++)
59
+	{
60
+		wait(NULL);
61
+	}
62
+		//printf("Content-Type: text/html\r\n\r\nHello world !\n");
63
+	return 0;
64
+}
65
+
66
+
67
+int new_semaphore(key_t semkey)
68
+{
69
+	int semid, err;
70
+
71
+	semid = semget(IPC_PRIVATE, 2, 0770);
72
+
73
+	if(semid == -1)
74
+	{
75
+		err = errno;
76
+		syslog(	LOG_ALERT,
77
+			"Unable to create semaphore : %s",
78
+			strerror(err));
79
+		clean_exit(err);
80
+	}
81
+	if(pyfcgi_semid)
82
+	{
83
+		syslog(	LOG_WARNING,
84
+			"The semid context was not zero when calling new_semaphore, attempt to closeing it.");
85
+		semctl(pyfcgi_semid, 0, IPC_RMID);
86
+
87
+	}
88
+	pyfcgi_semid = semid;
89
+	return semid;
90
+}
91
+
92
+void clean_exit(int status)
93
+{
94
+	if(pyfcgi_semid && semctl(pyfcgi_semid, 0, IPC_RMID) == -1)
95
+	{
96
+		syslog(	LOG_CRIT,
97
+			"Unable to delete semaphore before exiting.");
98
+	}
99
+	exit(status);
100
+}

+ 64
- 0
src/responder.h View File

@@ -0,0 +1,64 @@
1
+/*
2
+ * Copyright (C) 2019 Weber Yann
3
+ * 
4
+ * This file is part of PyFCGI.
5
+ * 
6
+ * PyFCGI is free software: you can redistribute it and/or modify
7
+ * it under the terms of the GNU Affero General Public License as published by
8
+ * the Free Software Foundation, either version 3 of the License, or
9
+ * any later version.
10
+ * 
11
+ * PyFCGI is distributed in the hope that it will be useful,
12
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
+ * GNU Affero General Public License for more details.
15
+ * 
16
+ * You should have received a copy of the GNU Affero General Public License
17
+ * along with PyFCGI.  If not, see <http://www.gnu.org/licenses/>.
18
+ */
19
+#ifndef _RESPONDER__H___
20
+#define _RESPONDER__H___
21
+
22
+#include <fcgi_stdio.h> /* fcgi library; put it first*/
23
+
24
+#include <stdlib.h>
25
+#include <unistd.h>
26
+#include <string.h>
27
+#include <syslog.h>
28
+#include <errno.h>
29
+#include <sys/types.h>
30
+#include <sys/ipc.h>
31
+#include <sys/sem.h>
32
+
33
+#include "pyworker.h"
34
+
35
+
36
+extern int pyfcgi_semid;
37
+
38
+void init_context();
39
+
40
+/**@brief The responder loop
41
+ *
42
+ * The main function of the fcgi app fork child
43
+ * @param int max_requests : exit normally after this number of requests. If
44
+ * 0 given never exit.
45
+ * @param char* python_entrypoint a path to a python entrypoint
46
+ * @param unsigned int max_requests before exiting worker
47
+ * @param unsigned int minimum workers count
48
+ * @param unsigned int maximum wrokers count
49
+ * @return 0 on success
50
+ */
51
+int responder_loop(char *py_entrypoint, unsigned int max_reqs,
52
+	unsigned int min_wrk, unsigned int max_wrk);
53
+
54
+/**@brief Generate a new semaphore from given key
55
+ * @note set pyfcgi_semid
56
+ * @return int semid
57
+ */
58
+int new_semaphore();
59
+
60
+/**@brief Exit after closing all stuff like semaphores
61
+ */
62
+void clean_exit(int);
63
+
64
+#endif

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