summaryrefslogtreecommitdiff
path: root/eclass/webapp.eclass
blob: e11835735cac8574e5908e74cf9588cd3dfb9930 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: webapp.eclass
# @MAINTAINER:
# web-apps@gentoo.org
# @BLURB: functions for installing applications to run under a web server
# @DESCRIPTION:
# The webapp eclass contains functions to handle web applications with
# webapp-config. Part of the implementation of GLEP #11

# @ECLASS-VARIABLE: WEBAPP_DEPEND
# @DESCRIPTION:
# An ebuild should use WEBAPP_DEPEND if a custom DEPEND needs to be built, most
# notably in combination with WEBAPP_OPTIONAL.
WEBAPP_DEPEND=">=app-admin/webapp-config-1.50.15"

# @ECLASS-VARIABLE: WEBAPP_NO_AUTO_INSTALL
# @DESCRIPTION:
# An ebuild sets this to `yes' if an automatic installation and/or upgrade is
# not possible. The ebuild should overwrite pkg_postinst() and explain the
# reason for this BEFORE calling webapp_pkg_postinst().

# @ECLASS-VARIABLE: WEBAPP_OPTIONAL
# @DESCRIPTION:
# An ebuild sets this to `yes' to make webapp support optional, in which case
# you also need to take care of USE-flags and dependencies.

if [[ "${WEBAPP_OPTIONAL}" != "yes" ]]; then
	[[ "${WEBAPP_NO_AUTO_INSTALL}" == "yes" ]] || IUSE="vhosts"
	SLOT="${PVR}"
	DEPEND="${WEBAPP_DEPEND}"
	RDEPEND="${DEPEND}"
fi

EXPORT_FUNCTIONS pkg_postinst pkg_setup src_install pkg_prerm

INSTALL_DIR="/${PN}"
IS_UPGRADE=0
IS_REPLACE=0

INSTALL_CHECK_FILE="installed_by_webapp_eclass"
SETUP_CHECK_FILE="setup_by_webapp_eclass"

ETC_CONFIG="${ROOT%/}/etc/vhosts/webapp-config"
WEBAPP_CONFIG="${ROOT%/}/usr/sbin/webapp-config"
WEBAPP_CLEANER="${ROOT%/}/usr/sbin/webapp-cleaner"

# ==============================================================================
# INTERNAL FUNCTIONS
# ==============================================================================

# Load the config file /etc/vhosts/webapp-config
# Supports both the old bash version, and the new python version
webapp_read_config() {
	debug-print-function $FUNCNAME $*

	if has_version '>=app-admin/webapp-config-1.50'; then
		ENVVAR=$(${WEBAPP_CONFIG} --query ${PN} ${PVR}) || die "Could not read settings from webapp-config!"
		eval ${ENVVAR}
	elif [[ "${WEBAPP_OPTIONAL}" != "yes" ]]; then
		# ETC_CONFIG might not be available
		. ${ETC_CONFIG} || die "Unable to read ${ETC_CONFIG}"
	elif [[ -f "${ETC_CONFIG}" ]]; then
		# WEBAPP_OPTIONAL is set to yes
		# and this must run only if ETC_CONFIG actually exists
		. ${ETC_CONFIG} || die "Unable to read ${ETC_CONFIG}"
	fi
}

# Check whether a specified file exists in the given directory (`.' by default)
webapp_checkfileexists() {
	debug-print-function $FUNCNAME $*

	local my_prefix=${2:+${2}/}

	if [[ ! -e "${my_prefix}${1}" ]]; then
		msg="ebuild fault: file '${1}' not found"
		eerror "$msg"
		eerror "Please report this as a bug at https://bugs.gentoo.org/"
		die "$msg"
	fi
}

webapp_check_installedat() {
	debug-print-function $FUNCNAME $*
	${WEBAPP_CONFIG} --show-installed -h localhost -d "${INSTALL_DIR}" 2> /dev/null
}

webapp_strip_appdir() {
	debug-print-function $FUNCNAME $*
	echo "${1#${MY_APPDIR}/}"
}

webapp_strip_d() {
	debug-print-function $FUNCNAME $*
	echo "${1#${D}}"
}

webapp_strip_cwd() {
	debug-print-function $FUNCNAME $*
	echo "${1/#.\///}"
}

webapp_getinstalltype() {
	debug-print-function $FUNCNAME $*

	if ! has vhosts ${IUSE} || use vhosts; then
		return
	fi

	local my_output
	my_output="$(webapp_check_installedat)"

	if [[ $? -eq 0 ]]; then
		# something is already installed there
		# make sure it isn't the same version

		local my_pn="$(echo ${my_output} | awk '{ print $1 }')"
		local my_pvr="$(echo ${my_output} | awk '{ print $2 }')"

		REMOVE_PKG="${my_pn}-${my_pvr}"

		if [[ "${my_pn}" == "${PN}" ]]; then
			if [[ "${my_pvr}" != "${PVR}" ]]; then
				elog "This is an upgrade"
				IS_UPGRADE=1
				# for binpkgs, reset status, var declared in global scope
				IS_REPLACE=0
			else
				elog "This is a re-installation"
				IS_REPLACE=1
				# for binpkgs, reset status, var declared in global scope
				IS_UPGRADE=0
			fi
		else
			elog "${my_output} is installed there"
		fi
	else
		# for binpkgs, reset status, var declared in global scope
		IS_REPLACE=0
		IS_UPGRADE=0
		elog "This is an installation"
	fi
}

# ==============================================================================
# PUBLIC FUNCTIONS
# ==============================================================================

# @FUNCTION: need_httpd
# @DESCRIPTION:
# Call this function AFTER your ebuilds DEPEND line if any of the available
# webservers are able to run this application.
need_httpd() {
	DEPEND="${DEPEND}
		|| ( virtual/httpd-basic virtual/httpd-cgi virtual/httpd-fastcgi )"
}

# @FUNCTION: need_httpd_cgi
# @DESCRIPTION:
# Call this function AFTER your ebuilds DEPEND line if any of the available
# CGI-capable webservers are able to run this application.
need_httpd_cgi() {
	DEPEND="${DEPEND}
		|| ( virtual/httpd-cgi virtual/httpd-fastcgi )"
}

# @FUNCTION: need_httpd_fastcgi
# @DESCRIPTION:
# Call this function AFTER your ebuilds DEPEND line if any of the available
# FastCGI-capabale webservers are able to run this application.
need_httpd_fastcgi() {
	DEPEND="${DEPEND}
		virtual/httpd-fastcgi"
}

# @FUNCTION: webapp_configfile
# @USAGE: <file> [more files ...]
# @DESCRIPTION:
# Mark a file config-protected for a web-based application.
webapp_configfile() {
	debug-print-function $FUNCNAME $*

	local m
	for m in "$@"; do
		webapp_checkfileexists "${m}" "${D}"

		local my_file="$(webapp_strip_appdir "${m}")"
		my_file="$(webapp_strip_cwd "${my_file}")"

		elog "(config) ${my_file}"
		echo "${my_file}" >> ${D}/${WA_CONFIGLIST}
	done
}

# @FUNCTION: webapp_hook_script
# @USAGE: <file>
# @DESCRIPTION:
# Install a script that will run after a virtual copy is created, and
# before a virtual copy has been removed.
webapp_hook_script() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${1}"

	elog "(hook) ${1}"
	cp "${1}" "${D}/${MY_HOOKSCRIPTSDIR}/$(basename "${1}")" || die "Unable to install ${1} into ${D}/${MY_HOOKSCRIPTSDIR}/"
	chmod 555 "${D}/${MY_HOOKSCRIPTSDIR}/$(basename "${1}")"
}

# @FUNCTION: webapp_postinst_txt
# @USAGE: <lang> <file>
# @DESCRIPTION:
# Install a text file containing post-installation instructions.
webapp_postinst_txt() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${2}"

	elog "(info) ${2} (lang: ${1})"
	cp "${2}" "${D}/${MY_APPDIR}/postinst-${1}.txt"
}

# @FUNCTION: webapp_postupgrade_txt
# @USAGE: <lang> <file>
# @DESCRIPTION:
# Install a text file containing post-upgrade instructions.
webapp_postupgrade_txt() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${2}"

	elog "(info) ${2} (lang: ${1})"
	cp "${2}" "${D}/${MY_APPDIR}/postupgrade-${1}.txt"
}

# helper for webapp_serverowned()
_webapp_serverowned() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${1}" "${D}"
	local my_file="$(webapp_strip_appdir "${1}")"
	my_file="$(webapp_strip_cwd "${my_file}")"

	echo "${my_file}" >> "${D}/${WA_SOLIST}"
}

# @FUNCTION: webapp_serverowned
# @USAGE: [-R] <file> [more files ...]
# @DESCRIPTION:
# Identify a file which must be owned by the webserver's user:group settings.
# The ownership of the file is NOT set until the application is installed using
# the webapp-config tool. If -R is given directories are handled recursively.
webapp_serverowned() {
	debug-print-function $FUNCNAME $*

	local a m
	if [[ "${1}" == "-R" ]]; then
		shift
		for m in "$@"; do
			find "${D}${m}" | while read a; do
				a=$(webapp_strip_d "${a}")
				_webapp_serverowned "${a}"
			done
		done
	else
		for m in "$@"; do
			_webapp_serverowned "${m}"
		done
	fi
}

# @FUNCTION: webapp_server_configfile
# @USAGE: <server> <file> [new name]
# @DESCRIPTION:
# Install a configuration file for the webserver.  You need to specify a
# webapp-config supported <server>.  if no new name is given `basename $2' is
# used by default. Note: this function will automagically prepend $1 to the
# front of your config file's name.
webapp_server_configfile() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${2}"

	# WARNING:
	#
	# do NOT change the naming convention used here without changing all
	# the other scripts that also rely upon these names

	local my_file="${1}-${3:-$(basename "${2}")}"

	elog "(${1}) config file '${my_file}'"
	cp "${2}" "${D}/${MY_SERVERCONFIGDIR}/${my_file}"
}

# @FUNCTION: webapp_sqlscript
# @USAGE: <db> <file> [version]
# @DESCRIPTION:
# Install a SQL script that creates/upgrades a database schema for the web
# application. Currently supported database engines are mysql and postgres.
# If a version is given the script should upgrade the database schema from
# the given version to $PVR.
webapp_sqlscript() {
	debug-print-function $FUNCNAME $*

	webapp_checkfileexists "${2}"

	dodir "${MY_SQLSCRIPTSDIR}/${1}"

	# WARNING:
	#
	# do NOT change the naming convention used here without changing all
	# the other scripts that also rely upon these names

	if [[ -n "${3}" ]]; then
		elog "(${1}) upgrade script for ${PN}-${3} to ${PVR}"
		cp "${2}" "${D}${MY_SQLSCRIPTSDIR}/${1}/${3}_to_${PVR}.sql"
		chmod 600 "${D}${MY_SQLSCRIPTSDIR}/${1}/${3}_to_${PVR}.sql"
	else
		elog "(${1}) create script for ${PN}-${PVR}"
		cp "${2}" "${D}/${MY_SQLSCRIPTSDIR}/${1}/${PVR}_create.sql"
		chmod 600 "${D}/${MY_SQLSCRIPTSDIR}/${1}/${PVR}_create.sql"
	fi
}

# @FUNCTION: webapp_src_preinst
# @DESCRIPTION:
# You need to call this function in src_install() BEFORE anything else has run.
# For now we just create required webapp-config directories.
webapp_src_preinst() {
	debug-print-function $FUNCNAME $*

	# sanity checks, to catch bugs in the ebuild
	if [[ ! -f "${T}/${SETUP_CHECK_FILE}" ]]; then
		eerror
		eerror "This ebuild did not call webapp_pkg_setup() at the beginning"
		eerror "of the pkg_setup() function"
		eerror
		eerror "Please log a bug on https://bugs.gentoo.org"
		eerror
		eerror "You should use emerge -C to remove this package, as the"
		eerror "installation is incomplete"
		eerror
		die "Ebuild did not call webapp_pkg_setup() - report to https://bugs.gentoo.org"
	fi

	# Hint, see the webapp_read_config() function to find where these are
	# defined.
	dodir "${MY_HTDOCSDIR}"
	dodir "${MY_HOSTROOTDIR}"
	dodir "${MY_CGIBINDIR}"
	dodir "${MY_ICONSDIR}"
	dodir "${MY_ERRORSDIR}"
	dodir "${MY_SQLSCRIPTSDIR}"
	dodir "${MY_HOOKSCRIPTSDIR}"
	dodir "${MY_SERVERCONFIGDIR}"
}

# ==============================================================================
# EXPORTED FUNCTIONS
# ==============================================================================

# @FUNCTION: webapp_pkg_setup
# @DESCRIPTION:
# The default pkg_setup() for this eclass. This will gather required variables
# from webapp-config and check if there is an application installed to
# `${ROOT%/}/var/www/localhost/htdocs/${PN}/' if USE=vhosts is not set.
#
# You need to call this function BEFORE anything else has run in your custom
# pkg_setup().
webapp_pkg_setup() {
	debug-print-function $FUNCNAME $*

	# to test whether or not the ebuild has correctly called this function
	# we add an empty file to the filesystem
	#
	# we used to just set a variable in the shell script, but we can
	# no longer rely on Portage calling both webapp_pkg_setup() and
	# webapp_src_install() within the same shell process
	touch "${T}/${SETUP_CHECK_FILE}"

	# special case - some ebuilds *do* need to overwride the SLOT
	if [[ "${SLOT}+" != "${PVR}+" && "${WEBAPP_MANUAL_SLOT}" != "yes" ]]; then
		die "Set WEBAPP_MANUAL_SLOT=\"yes\" if you need to SLOT manually"
	fi

	# pull in the shared configuration file
	G_HOSTNAME="localhost"
	webapp_read_config

	local my_dir="${ROOT%/}/${VHOST_ROOT}/${MY_HTDOCSBASE}/${PN}"

	# if USE=vhosts is enabled OR no application is installed we're done here
	if ! has vhosts ${IUSE} || use vhosts || [[ ! -d "${my_dir}" ]]; then
		return
	fi

	local my_output
	my_output="$(webapp_check_installedat)"

	if [[ $? -ne 0 ]]; then
		# okay, whatever is there, it isn't webapp-config-compatible
		echo
		ewarn
		ewarn "You already have something installed in ${my_dir}"
		ewarn
		ewarn "Whatever is in ${my_dir}, it's not"
		ewarn "compatible with webapp-config."
		ewarn
		ewarn "This ebuild may be overwriting important files."
		ewarn
		echo
	elif [[ "$(echo ${my_output} | awk '{ print $1 }')" != "${PN}" ]]; then
		echo
		eerror "You already have ${my_output} installed in ${my_dir}"
		eerror
		eerror "I cannot upgrade a different application"
		eerror
		echo
		die "Cannot upgrade contents of ${my_dir}"
	fi

}

# @FUNCTION: webapp_src_install
# @DESCRIPTION:
# This is the default src_install(). For now, we just make sure that root owns
# everything, and that there are no setuid files.
#
# You need to call this function AFTER everything else has run in your custom
# src_install().
webapp_src_install() {
	debug-print-function $FUNCNAME $*

	# to test whether or not the ebuild has correctly called this function
	# we add an empty file to the filesystem
	#
	# we used to just set a variable in the shell script, but we can
	# no longer rely on Portage calling both webapp_src_install() and
	# webapp_pkg_postinst() within the same shell process
	touch "${D}/${MY_APPDIR}/${INSTALL_CHECK_FILE}"

	chown -R "${VHOST_DEFAULT_UID}:${VHOST_DEFAULT_GID}" "${D}/"
	chmod -R u-s "${D}/"
	chmod -R g-s "${D}/"

	keepdir "${MY_PERSISTDIR}"
	fowners "root:0" "${MY_PERSISTDIR}"
	fperms 755 "${MY_PERSISTDIR}"
}

# @FUNCTION: webapp_pkg_postinst
# @DESCRIPTION:
# The default pkg_postinst() for this eclass. This installs the web application to
# `${ROOT%/}/var/www/localhost/htdocs/${PN}/' if USE=vhosts is not set. Otherwise
# display a short notice how to install this application with webapp-config.
#
# You need to call this function AFTER everything else has run in your custom
# pkg_postinst().
webapp_pkg_postinst() {
	debug-print-function $FUNCNAME $*

	webapp_read_config

	# sanity checks, to catch bugs in the ebuild
	if [[ ! -f "${ROOT%/}/${MY_APPDIR}/${INSTALL_CHECK_FILE}" ]]; then
		eerror
		eerror "This ebuild did not call webapp_src_install() at the end"
		eerror "of the src_install() function"
		eerror
		eerror "Please log a bug on https://bugs.gentoo.org"
		eerror
		eerror "You should use emerge -C to remove this package, as the"
		eerror "installation is incomplete"
		eerror
		die "Ebuild did not call webapp_src_install() - report to https://bugs.gentoo.org"
	fi

	if has vhosts ${IUSE}; then
		if ! use vhosts; then
			echo
			elog "vhosts USE flag not set - auto-installing using webapp-config"

			G_HOSTNAME="localhost"
			webapp_read_config

			local my_mode=-I
			webapp_getinstalltype

			if [[ "${IS_REPLACE}" == "1" ]]; then
				elog "${PN}-${PVR} is already installed - replacing"
				my_mode=-I
			elif [[ "${IS_UPGRADE}" == "1" ]]; then
				elog "${REMOVE_PKG} is already installed - upgrading"
				my_mode=-U
			else
				elog "${PN}-${PVR} is not installed - using install mode"
			fi

			my_cmd="${WEBAPP_CONFIG} -h localhost -u root -d ${INSTALL_DIR} ${my_mode} ${PN} ${PVR}"
			elog "Running ${my_cmd}"
			${my_cmd}

			echo
			local cleaner="${WEBAPP_CLEANER} -p -C ${CATEGORY}/${PN}"
			einfo "Running ${cleaner}"
			${cleaner}
		else
			elog
			elog "The 'vhosts' USE flag is switched ON"
			elog "This means that Portage will not automatically run webapp-config to"
			elog "complete the installation."
			elog
			elog "To install ${PN}-${PVR} into a virtual host, run the following command:"
			elog
			elog "    webapp-config -h <host> -d ${PN} -I ${PN} ${PVR}"
			elog
			elog "For more details, see the webapp-config(8) man page"
		fi
	else
		elog
		elog "This ebuild does not support the 'vhosts' USE flag."
		elog "This means that Portage will not automatically run webapp-config to"
		elog "complete the installation."
		elog
		elog "To install ${PN}-${PVR} into a virtual host, run the following command:"
		elog
		elog "    webapp-config -h <host> -d ${PN} -I ${PN} ${PVR}"
		elog
		elog "For more details, see the webapp-config(8) man page"
	fi
}

# @FUNCTION: webapp_pkg_prerm
# @DESCRIPTION:
# This is the default pkg_prerm() for this eclass. If USE=vhosts is not set
# remove all installed copies of this web application. Otherwise instruct the
# user to manually remove those copies. See bug #136959.
webapp_pkg_prerm() {
	debug-print-function $FUNCNAME $*

	local my_output=
	my_output="$(${WEBAPP_CONFIG} --list-installs ${PN} ${PVR})"
	[[ $? -ne 0 ]] && return

	local x
	if has vhosts ${IUSE} && ! use vhosts; then
		echo "${my_output}" | while read x; do
			if [[ -f "${x}"/.webapp ]]; then
				. "${x}"/.webapp
				if [[ -n "${WEB_HOSTNAME}" && -n "${WEB_INSTALLDIR}" ]]; then
					${WEBAPP_CONFIG} -h ${WEB_HOSTNAME} -d ${WEB_INSTALLDIR} -C ${PN} ${PVR}
				fi
			else
				ewarn "Cannot find file ${x}/.webapp"
			fi
		done
	elif [[ "${my_output}" != "" ]]; then
		echo
		ewarn
		ewarn "Don't forget to use webapp-config to remove any copies of"
		ewarn "${PN}-${PVR} installed in"
		ewarn

		echo "${my_output}" | while read x; do
			if [[ -f "${x}"/.webapp ]]; then
				ewarn "    ${x}"
			else
				ewarn "Cannot find file ${x}/.webapp"
			fi
		done

		ewarn
		echo
	fi
}