http.subr revision 255818
1252112Sdteskeif [ ! "$_MEDIA_HTTP_SUBR" ]; then _MEDIA_HTTP_SUBR=1 2252112Sdteske# 3252112Sdteske# Copyright (c) 2012-2013 Devin Teske 4252980Sdteske# All rights reserved. 5252112Sdteske# 6252112Sdteske# Redistribution and use in source and binary forms, with or without 7252112Sdteske# modification, are permitted provided that the following conditions 8252112Sdteske# are met: 9252112Sdteske# 1. Redistributions of source code must retain the above copyright 10252112Sdteske# notice, this list of conditions and the following disclaimer. 11252112Sdteske# 2. Redistributions in binary form must reproduce the above copyright 12252112Sdteske# notice, this list of conditions and the following disclaimer in the 13252112Sdteske# documentation and/or other materials provided with the distribution. 14252112Sdteske# 15252112Sdteske# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16252987Sdteske# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17252112Sdteske# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18252112Sdteske# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19252112Sdteske# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20252987Sdteske# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21252112Sdteske# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22252112Sdteske# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23252112Sdteske# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24252112Sdteske# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25252112Sdteske# SUCH DAMAGE. 26252112Sdteske# 27252112Sdteske# $FreeBSD: head/usr.sbin/bsdconfig/share/media/http.subr 255818 2013-09-23 16:47:52Z dteske $ 28252112Sdteske# 29252112Sdteske############################################################ INCLUDES 30252112Sdteske 31252112SdteskeBSDCFG_SHARE="/usr/share/bsdconfig" 32252112Sdteske. $BSDCFG_SHARE/common.subr || exit 1 33252112Sdteskef_dprintf "%s: loading includes..." media/http.subr 34252112Sdteskef_include $BSDCFG_SHARE/device.subr 35252112Sdteskef_include $BSDCFG_SHARE/dialog.subr 36252112Sdteskef_include $BSDCFG_SHARE/media/common.subr 37252112Sdteskef_include $BSDCFG_SHARE/media/tcpip.subr 38252112Sdteskef_include $BSDCFG_SHARE/strings.subr 39252112Sdteskef_include $BSDCFG_SHARE/struct.subr 40252112Sdteskef_include $BSDCFG_SHARE/variable.subr 41252112Sdteske 42252112SdteskeBSDCFG_LIBE="/usr/libexec/bsdconfig" 43252112Sdteskef_include_lang $BSDCFG_LIBE/include/messages.subr 44252112Sdteske 45252112Sdteske############################################################ GLOBALS 46252112Sdteske 47252112SdteskeHTTP_SKIP_RESOLV= 48252112Sdteske 49252112SdteskeURL_MAX=261261 50252112Sdteske # NOTE: This is according to actual fetch(1) test-results. We actually 51252112Sdteske # use nc(1) to retrieve files, but it's still a good idea to keep the 52252112Sdteske # URLs short enough that fetch(1) won't complain. 53252112Sdteske 54252112SdteskeHTTP_DIRS=" 55252112Sdteske . 56252112Sdteske releases/$UNAME_P 57252112Sdteske snapshots/$UNAME_P 58252112Sdteske pub/FreeBSD 59252112Sdteske pub/FreeBSD/releases/$UNAME_P 60252112Sdteske pub/FreeBSD/snapshots/$UNAME_P 61252112Sdteske pub/FreeBSD-Archive/old-releases/$UNAME_P 62252112Sdteske" # END-QUOTE 63252112Sdteske 64252112Sdteske############################################################ FUNCTIONS 65252112Sdteske 66252112Sdteske# f_dialog_menu_media_http 67252112Sdteske# 68252112Sdteske# Prompt the user to select from a range of ``built-in'' HTTP servers or 69252112Sdteske# specify their own. If the user makes a choice and doesn't cancel or press 70252112Sdteske# Esc, stores the user's choice in VAR_FTP_PATH (see variable.subr) and returns 71252112Sdteske# success. 72252112Sdteske# 73252112Sdteskef_dialog_menu_media_http() 74252112Sdteske{ 75252112Sdteske f_dialog_title "$msg_please_select_a_freebsd_http_distribution_site" 76252112Sdteske local title="$DIALOG_TITLE" btitle="$DIALOG_BACKTITLE" 77252112Sdteske f_dialog_title_restore 78252112Sdteske local prompt="$msg_please_select_the_site_closest_to_you_or_other" 79252112Sdteske local menu_list=" 80255818Sdteske '$msg_main_site' 'ftp.freebsd.org' 81255818Sdteske 'URL' '$msg_specify_some_other_http_site' 82252112Sdteske " # END-QUOTE 83252112Sdteske local hline="$msg_select_a_site_thats_close" 84252112Sdteske 85252112Sdteske local height width rows 86252112Sdteske eval f_dialog_menu_size height width rows \ 87252112Sdteske \"\$title\" \ 88252112Sdteske \"\$btitle\" \ 89252112Sdteske \"\$prompt\" \ 90252112Sdteske \"\$hline\" \ 91252112Sdteske $menu_list 92252112Sdteske 93252112Sdteske local mtag 94252112Sdteske mtag=$( eval $DIALOG \ 95252112Sdteske --title \"\$title\" \ 96252112Sdteske --backtitle \"\$btitle\" \ 97252112Sdteske --hline \"\$hline\" \ 98252112Sdteske --ok-label \"\$msg_ok\" \ 99252112Sdteske --cancel-label \"\$msg_cancel\" \ 100252112Sdteske --menu \"\$prompt\" \ 101252112Sdteske $height $width $rows \ 102252112Sdteske $menu_list \ 103252112Sdteske 2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD 104252112Sdteske ) || return $FAILURE 105252112Sdteske f_dialog_data_sanitize mtag 106252112Sdteske 107252112Sdteske case "$mtag" in 108252112Sdteske URL) setvar $VAR_HTTP_PATH "other" ;; 109252112Sdteske *) 110252112Sdteske local value 111252112Sdteske value=$( eval f_dialog_menutag2item \"\$mtag\" $menu_list ) 112252112Sdteske setvar $VAR_HTTP_PATH "http://$value" 113252112Sdteske esac 114252112Sdteske 115252112Sdteske return $SUCCESS 116252112Sdteske} 117252112Sdteske 118252112Sdteske# f_media_set_http 119252112Sdteske# 120252112Sdteske# Return success if we both found and set the media type to be an HTTP server. 121252112Sdteske# 122252112Sdteske# Variables from variable.subr that can be used to script user input: 123252112Sdteske# 124252112Sdteske# VAR_HTTP_PATH 125252112Sdteske# URL containing host and optionally a target path to the release 126252112Sdteske# repository on the HTTP server. Valid examples include: 127252112Sdteske# http://myhost 128252112Sdteske# http://somename:80/pub/ 129252112Sdteske# http://192.168.2.3/pub/ 130252112Sdteske# http://[::1]:8000/ 131252112Sdteske# The default port if not specified is 80. 132252112Sdteske# VAR_NAMESERVER [Optional] 133252112Sdteske# If set, overrides resolv.conf(5) and sets the nameserver that 134252112Sdteske# is used to convert names into addresses (when a name converts 135252112Sdteske# into multiple addresses, the first address to successfully 136252112Sdteske# connect is used). 137252112Sdteske# 138252112Sdteske# Meanwhile, the following variables from variable.subr are set after 139252112Sdteske# successful execution: 140252112Sdteske# 141252112Sdteske# VAR_HTTP_HOST 142252112Sdteske# The HTTP host to connect to, parsed from VAR_HTTP_PATH. In the 143252112Sdteske# example case of IPv6 where VAR_HTTP_PATH is "http://[::1]" this 144252112Sdteske# variable will be set to "::1" (the outer brackets are removed). 145252112Sdteske# VAR_HTTP_PORT 146252112Sdteske# The TCP port to connect to, parsed from VAR_HTTP_PATH. Usually 147252112Sdteske# 80 unless VAR_HTTP_PATH was one of the following forms: 148252112Sdteske# http://hostname:OTHER_PORT 149252112Sdteske# http://hostname:OTHER_PORT/* 150252112Sdteske# http://ip:OTHER_PORT 151252112Sdteske# http://ip:OTHER_PORT/* 152252112Sdteske# http://[ip6]:OTHER_PORT 153252112Sdteske# http://[ip6]:OTHER_PORT/* 154252112Sdteske# VAR_HTTP_DIR 155252112Sdteske# If VAR_HTTP_PATH contained a directory element (e.g., 156252112Sdteske# "http://localhost/pub") this variable contains only the 157252112Sdteske# directory element (e.g., "/pub"). 158252112Sdteske# 159252112Sdteskef_media_set_http() 160252112Sdteske{ 161252112Sdteske f_media_close 162252112Sdteske 163252112Sdteske local url 164252112Sdteske f_getvar $VAR_HTTP_PATH url 165252112Sdteske 166252112Sdteske # If we've been through here before ... 167252112Sdteske if f_struct device_network && [ "${url#$msg_other}" ]; then 168252112Sdteske f_dialog_yesno "$msg_reuse_old_http_site_settings" || url= 169252112Sdteske fi 170252112Sdteske 171252112Sdteske if [ ! "$url" ]; then 172252112Sdteske f_dialog_menu_media_http || return $FAILURE 173252112Sdteske f_getvar $VAR_HTTP_PATH url 174252112Sdteske fi 175252112Sdteske [ "$url" ] || return $FAILURE 176252112Sdteske 177252112Sdteske case "$url" in 178252112Sdteske other) 179252112Sdteske setvar $VAR_HTTP_PATH "http://" 180252112Sdteske f_variable_get_value $VAR_HTTP_PATH \ 181252112Sdteske "$msg_please_specify_url_of_freebsd_http_distribution" 182252112Sdteske f_getvar $VAR_HTTP_PATH url 183252112Sdteske if [ ! "${url#http://}" ]; then 184252112Sdteske unset $VAR_HTTP_PATH 185252112Sdteske return $FAILURE 186252112Sdteske fi 187252112Sdteske if [ ${#url} -gt ${URL_MAX:-261261} ]; then 188252112Sdteske f_show_msg "$msg_length_of_specified_url_is_too_long" \ 189252112Sdteske ${#url} ${URL_MAX:-261261} 190252112Sdteske unset $VAR_HTTP_PATH 191252112Sdteske return $FAILURE 192252112Sdteske fi 193252112Sdteske case "$url" in 194252112Sdteske http://*) : valid URL ;; 195252112Sdteske *) 196252112Sdteske f_show_msg "$msg_sorry_invalid_url" "$url" 197252112Sdteske unset $VAR_HTTP_PATH 198252112Sdteske return $FAILURE 199252112Sdteske esac 200252112Sdteske esac 201252112Sdteske case "$url" in 202252112Sdteske http://*) : valid URL ;; 203252112Sdteske *) 204252112Sdteske f_show_msg "$msg_sorry_invalid_url" "$url" 205252112Sdteske unset $VAR_HTTP_PATH 206252112Sdteske return $FAILURE 207252112Sdteske esac 208252112Sdteske 209252112Sdteske # Set the name of the HTTP device to the URL 210252112Sdteske f_struct_new DEVICE device_http 211252112Sdteske device_http set name "$url" 212252112Sdteske 213252112Sdteske if ! f_struct device_network || 214252112Sdteske ! f_dialog_yesno "$msg_youve_already_done_the_network_configuration" 215252112Sdteske then 216252112Sdteske f_struct device_network && 217252112Sdteske f_device_shutdown network 218252112Sdteske if ! f_device_select_tcp; then 219252112Sdteske unset $VAR_HTTP_PATH 220252112Sdteske return $FAILURE 221252112Sdteske fi 222252112Sdteske local dev 223252112Sdteske f_getvar $VAR_NETWORK_DEVICE dev 224252112Sdteske f_struct_copy "device_$dev" device_network 225252112Sdteske fi 226252112Sdteske if ! f_device_init network; then 227252112Sdteske f_dprintf "f_media_set_http: %s" "$msg_net_device_init_failed" 228252112Sdteske unset $VAR_HTTP_PATH 229252112Sdteske return $FAILURE 230252112Sdteske fi 231252112Sdteske 232252112Sdteske local hostname="${url#*://}" port=80 dir=/ 233252112Sdteske case "$hostname" in 234252112Sdteske # 235252112Sdteske # The order in-which the below individual cases appear is important! 236252112Sdteske # 237252112Sdteske "["*"]":*/*) # IPv6 address with port and directory 238252112Sdteske f_dprintf "Looks like an IPv6 addr with port/dir: %s" \ 239252112Sdteske "$hostname" 240252112Sdteske hostname="${hostname#\[}" 241252112Sdteske port="${hostname#*\]:}" 242252112Sdteske port="${port%%[!0-9]*}" 243252112Sdteske dir="/${hostname#*/}" 244252112Sdteske hostname="${hostname%%\]:*}" 245252112Sdteske ;; 246252112Sdteske "["*"]":*) # IPv6 address with port 247252112Sdteske f_dprintf "Looks like an IPv6 addr with port: %s" "$hostname" 248252112Sdteske hostname="${hostname#\[}" 249252112Sdteske port="${hostname#*\]:}" 250252112Sdteske port="${port%%[!0-9]*}" 251252112Sdteske hostname="${hostname%%\]:*}" 252252112Sdteske ;; 253252112Sdteske "["*"]"/*) # IPv6 address with directory 254252112Sdteske f_dprintf "Looks like an IPv6 addr with dir: %s" "$hostname" 255252112Sdteske hostname="${hostname#\[}" 256252112Sdteske dir="/${hostname#*/}" 257252112Sdteske hostname="${hostname%%\]*}" 258252112Sdteske ;; 259252112Sdteske "["*"]") # IPv6 address 260252112Sdteske f_dprintf "Looks like an IPv6 addr: %s" "$hostname" 261252112Sdteske hostname="${hostname#\[}" 262252112Sdteske hostname="${hostname%\]}" 263252112Sdteske ;; 264252112Sdteske # 265252112Sdteske # ^^^ IPv6 above / DNS Name or IPv4 below vvv 266252112Sdteske # 267252112Sdteske *:*/*) # DNS name or IPv4 address with port and directory 268252112Sdteske f_dprintf "Looks like a %s with port/dir: %s" \ 269252112Sdteske "DNS name or IPv4 addr" "$hostname" 270252112Sdteske port="${hostname#*:}" 271252112Sdteske port="${port%%[!0-9]*}" 272252112Sdteske dir="/${hostname#*/}" 273252112Sdteske hostname="${hostname%%:*}" 274252112Sdteske ;; 275252112Sdteske *:*) # DNS name or IPv4 address with port 276252112Sdteske f_dprintf "Looks like a DNS name or IPv4 addr with port: %s" \ 277252112Sdteske "$hostname" 278252112Sdteske port="${hostname#*:}" 279252112Sdteske hostname="${hostname%%:*}" 280252112Sdteske ;; 281252112Sdteske */*) # DNS name or IPv4 address with directory 282252112Sdteske f_dprintf "Looks like a DNS name or IPv4 addr with dir: %s" \ 283252112Sdteske "$hostname" 284252112Sdteske dir="/${hostname#*/}" 285252112Sdteske hostname="${hostname%%/*}" 286252112Sdteske ;; 287252112Sdteske *) # DNS name or IPv4 address 288252112Sdteske f_dprintf "Looks like a DNS name or IPv4 addr: %s" "$hostname" 289252112Sdteske : leave hostname as-is 290252112Sdteske esac 291252112Sdteske 292252112Sdteske f_dprintf "hostname = \`%s'" "$hostname" 293252112Sdteske f_dprintf "dir = \`%s'" "$dir" 294252112Sdteske f_dprintf "port \# = \`%d'" "$port" 295252112Sdteske 296252112Sdteske local ns 297252112Sdteske f_getvar $VAR_NAMESERVER ns 298252112Sdteske [ "$ns" ] || f_resolv_conf_nameservers ns 299252112Sdteske if [ "$ns" -a ! "$HTTP_SKIP_RESOLV" ] && ! { 300252112Sdteske f_validate_ipaddr "$hostname" || 301252112Sdteske f_validate_ipaddr6 "$hostname" 302252112Sdteske }; then 303252112Sdteske f_show_info "$msg_looking_up_host" "$hostname" 304252112Sdteske f_dprintf "%s: Looking up hostname, %s, using host(1)" \ 305252112Sdteske "f_media_set_http" "$hostname" 306252112Sdteske if ! f_quietly f_host_lookup "$hostname"; then 307252112Sdteske f_show_msg "$msg_cannot_resolve_hostname" "$hostname" 308252112Sdteske f_struct device_network && 309252112Sdteske f_device_shutdown network 310252112Sdteske f_struct_free device_network 311252112Sdteske unset $VAR_HTTP_PATH 312252112Sdteske return $FAILURE 313252112Sdteske fi 314252112Sdteske f_dprintf "Found DNS entry for %s successfully." "$hostname" 315252112Sdteske fi 316252112Sdteske 317252112Sdteske setvar $VAR_HTTP_HOST "$hostname" 318252112Sdteske setvar $VAR_HTTP_PORT "$port" 319252112Sdteske setvar $VAR_HTTP_DIR "$dir" 320252112Sdteske 321252112Sdteske device_http set type $DEVICE_TYPE_HTTP 322252112Sdteske device_http set init f_media_init_http 323252112Sdteske device_http set get f_media_get_http 324252112Sdteske device_http set shutdown f_media_shutdown_http 325252112Sdteske device_http set private network 326252112Sdteske f_struct_copy device_http device_media 327252112Sdteske f_struct_free device_http 328252112Sdteske 329252112Sdteske return $SUCCESS 330252112Sdteske} 331252112Sdteske 332252112Sdteske# f_http_check_access [$connect_only] 333252112Sdteske# 334252112Sdteske# Return success if able list a remote HTTP directory. If $connect_only is 335252112Sdteske# present and non-null, then returns success if a connection can be made. 336252112Sdteske# Variables from variable.subr that can be used to script user input: 337252112Sdteske# 338252112Sdteske# VAR_HTTP_HOST 339252112Sdteske# The HTTP server host name, IPv4 address or IPv6 address. 340252112Sdteske# Valid examples include: 341252112Sdteske# myhost 342252112Sdteske# 192.168.2.3 343252112Sdteske# ::1 344252112Sdteske# VAR_HTTP_PORT 345252112Sdteske# The TCP port to connect to when communicating with the server. 346252112Sdteske# VAR_HTTP_PATH 347252112Sdteske# The HTTP path sent to the server. Unused if $connect_only is 348252112Sdteske# present and non-NULL. 349252112Sdteske# 350252112Sdteskef_http_check_access() 351252112Sdteske{ 352252112Sdteske local connect_only="$1" hosts= 353252112Sdteske 354252112Sdteske local http_host http_port 355252112Sdteske f_getvar $VAR_HTTP_HOST http_host 356252112Sdteske f_getvar $VAR_HTTP_PORT http_port 357252112Sdteske 358252112Sdteske if ! { 359252112Sdteske f_validate_ipaddr "$http_host" || 360252112Sdteske f_validate_ipaddr6 "$http_host" || 361252112Sdteske { 362252112Sdteske f_dprintf "%s: Looking up hostname, %s, using host(1)" \ 363252112Sdteske "f_http_check_access" "$http_host" 364252112Sdteske f_host_lookup "$http_host" hosts 365252112Sdteske } 366252112Sdteske }; then 367252112Sdteske # All the above validations failed 368252112Sdteske [ "$hosts" ] && f_dialog_msgbox "$hosts" 369252112Sdteske unset $VAR_HTTP_HOST 370252112Sdteske return $FAILURE 371252112Sdteske elif [ ! "$hosts" ]; then 372252112Sdteske # One of the first two validations passed 373252112Sdteske hosts="$http_host" 374252112Sdteske fi 375252112Sdteske 376252112Sdteske local host connected= 377252112Sdteske for host in $hosts; do 378252112Sdteske f_quietly nc -nz "$host" "$http_port" || continue 379252112Sdteske connected=1; break 380252112Sdteske done 381252112Sdteske if [ ! "$connected" ]; then 382252112Sdteske f_show_msg "$msg_couldnt_connect_to_server http://%s:%s/" \ 383252112Sdteske "$http_host" "$http_port" 384252112Sdteske unset $VAR_HTTP_HOST 385252112Sdteske return $FAILURE 386252112Sdteske fi 387252112Sdteske [ "$connect_only" ] && return $SUCCESS 388252112Sdteske 389252112Sdteske local http_path 390252112Sdteske f_getvar $VAR_HTTP_PATH http_path 391252112Sdteske f_show_info "$msg_checking_access_to" "$http_path" 392252112Sdteske 393252112Sdteske local rx 394255818Sdteske case "$http_path" in 395255818Sdteske http://*|/*) : valid request ;; 396255818Sdteske *) http_path="/$http_path" # full URI requests only 397255818Sdteske esac 398252112Sdteske if ! rx=$( 399255818Sdteske printf "GET %s/ HTTP/1.0\r\n\r\n" "${http_path%/}" | 400252112Sdteske nc -n "$host" "$http_port" 401252112Sdteske ); then 402252112Sdteske f_show_msg "$msg_couldnt_connect_to_server http://%s:%s/" \ 403252112Sdteske "$http_host" "$http_port" 404252112Sdteske unset $VAR_HTTP_HOST 405252112Sdteske return $FAILURE 406252112Sdteske fi 407252112Sdteske 408252112Sdteske local hdr 409252112Sdteske hdr=$( echo "$rx" | awk '/^\r$/{exit}{print}' ) 410252112Sdteske 411252112Sdteske local http_found=$FAILURE 412252112Sdteske if echo "$hdr" | awk ' 413252112Sdteske BEGIN { found = 0 } 414252112Sdteske /^HTTP.... 200 / { 415252112Sdteske found = 1 416252112Sdteske exit 417252112Sdteske } 418252112Sdteske END { exit ! found } 419252112Sdteske '; then 420252112Sdteske http_found=$SUCCESS 421252112Sdteske fi 422252112Sdteske 423252112Sdteske return $http_found 424252112Sdteske} 425252112Sdteske 426252112Sdteske# f_media_init_http $device 427252112Sdteske# 428252112Sdteske# Initializes the HTTP media device. Returns success if able to confirm the 429252112Sdteske# existence of at least one known HTTP server release path directly via HTTP 430252112Sdteske# using f_http_check_access(), above. 431252112Sdteske# 432252112Sdteske# Variables from variable.subr that can be used to script user input: 433252112Sdteske# 434252112Sdteske# VAR_HTTP_HOST 435252112Sdteske# The HTTP server to connect to. Must be set. Also see 436252112Sdteske# f_http_check_access() for additional variables. 437252112Sdteske# VAR_RELNAME 438252112Sdteske# Usually set to `uname -r' but can be overridden. 439252112Sdteske# VAR_HTTP_PATH 440252112Sdteske# The HTTP path sent to the server. Usually set by calling 441252112Sdteske# f_media_set_http(). 442252112Sdteske# 443252112Sdteske# Meanwhile, after successful execution, the following variables (also from 444252112Sdteske# variable.subr) are set: 445252112Sdteske# 446252112Sdteske# VAR_HTTP_PATH 447252112Sdteske# The [possibly] adjusted VAR_HTTP_PATH that was found to contain 448252112Sdteske# a valid FreeBSD repository. 449252112Sdteske# 450252112Sdteskef_media_init_http() 451252112Sdteske{ 452252112Sdteske local dev="$1" 453252112Sdteske f_dprintf "Init routine called for HTTP device. dev=[%s]" "$dev" 454252112Sdteske 455252112Sdteske # 456252112Sdteske # First verify access 457252112Sdteske # 458252112Sdteske local connect_only=1 459252112Sdteske f_http_check_access $connect_only 460252112Sdteske 461252112Sdteske local http_host 462252112Sdteske f_getvar $VAR_HTTP_HOST http_host 463252112Sdteske while [ ! "$http_host" ]; do 464252112Sdteske f_media_set_http || return $FAILURE 465252112Sdteske f_http_check_access $connect_only 466252112Sdteske f_getvar $VAR_HTTP_HOST http_host 467252112Sdteske done 468252112Sdteske 469252112Sdteske local http_path http_found=$FAILURE 470252112Sdteske while :; do 471252112Sdteske # 472252112Sdteske # Now that we've verified that the path we're given is ok, 473252112Sdteske # let's try to be a bit intelligent in locating the release we 474252112Sdteske # are looking for. First off, if the release is specified as 475252112Sdteske # "__RELEASE" or "any", then just assume that the current 476252112Sdteske # directory is the one we want and give up. 477252112Sdteske # 478252112Sdteske local rel 479252112Sdteske f_getvar $VAR_RELNAME rel 480252112Sdteske f_dprintf "f_media_init_http: rel=[%s]" "$rel" 481252112Sdteske 482252112Sdteske case "$rel" in 483252112Sdteske __RELEASE|any) 484252112Sdteske setvar $VAR_HTTP_PATH "$VAR_HTTP_DIR" 485252112Sdteske f_http_check_access 486252112Sdteske http_found=$? 487252112Sdteske ;; 488252112Sdteske *) 489252112Sdteske # 490252112Sdteske # Ok, since we have a release variable, let's walk 491252112Sdteske # through the list of directories looking for a release 492252112Sdteske # directory. First successful path wins. 493252112Sdteske # 494252112Sdteske local fdir hp 495252112Sdteske f_getvar $VAR_HTTP_PATH%/ hp 496252112Sdteske for fdir in $HTTP_DIRS; do 497252112Sdteske setvar $VAR_HTTP_PATH "$hp/$fdir/$rel" 498252112Sdteske if f_http_check_access; then 499252112Sdteske http_found=$SUCCESS 500252112Sdteske break 501252112Sdteske fi 502252112Sdteske done 503252112Sdteske esac 504252112Sdteske 505252112Sdteske [ $http_found -eq $SUCCESS ] && break 506252112Sdteske 507252112Sdteske f_getvar $VAR_HTTP_PATH http_path 508252112Sdteske f_show_msg "$msg_please_check_the_url_and_try_again" \ 509252112Sdteske "$http_path" 510252112Sdteske 511252112Sdteske unset $VAR_HTTP_PATH 512252112Sdteske f_media_set_http || break 513252112Sdteske done 514252112Sdteske 515252112Sdteske return $http_found 516252112Sdteske} 517252112Sdteske 518253333Sdteske# f_media_get_http $device $file [$probe_type] 519252112Sdteske# 520252112Sdteske# Returns data from $file on an HTTP server using nc(1). Please note that 521252112Sdteske# $device is unused but must be present (even if null). Information is instead 522253333Sdteske# gathered from the environment. If $probe_type is both present and non-NULL, 523252112Sdteske# this function exits after receiving the HTTP header response from the server 524252112Sdteske# (if the HTTP response code is 200, success is returned; otherwise failure). 525253333Sdteske# If $probe_type is equal to $PROBE_SIZE, prints the content-length in bytes 526253333Sdteske# from the response (or -1 if not found) to standard-out. 527252112Sdteske# 528252112Sdteske# The variables used to configure the connection are as follows (all of which 529252112Sdteske# are configured by f_media_set_http above): 530252112Sdteske# 531252112Sdteske# VAR_HTTP_HOST 532252112Sdteske# HTTP server which to connect. Can be an IPv4 address, IPv6 533252112Sdteske# address, or DNS hostname of your choice. 534252112Sdteske# VAR_HTTP_PORT 535252112Sdteske# TCP port to connect on; see f_media_set_http above. 536252112Sdteske# VAR_HTTP_PATH 537252112Sdteske# Directory prefix to use when requesting $file. Default is `/' 538252112Sdteske# unless f_media_init_http was able to use f_http_check_access 539252112Sdteske# to validate one of the defaults in $HTTP_DIRS (see GLOBALS at 540252112Sdteske# the top of this file); assuming VAR_RELNAME was not set to 541252112Sdteske# either `__RELEASE' or `any' (indicating that the global set of 542252112Sdteske# $HTTP_DIRS should be ignored). 543252112Sdteske# 544252112Sdteske# See variable.subr for additional information. 545252112Sdteske# 546252112Sdteske# Example usage: 547252112Sdteske# f_media_set_http 548252112Sdteske# f_media_get_http media $file 549252112Sdteske# 550252112Sdteskef_media_get_http() 551252112Sdteske{ 552253333Sdteske local dev="$1" file="$2" probe_type="$3" hosts= 553252112Sdteske 554253333Sdteske f_dprintf "f_media_get_http: dev=[%s] file=[%s] probe_type=%s" \ 555253333Sdteske "$dev" "$file" "$probe_type" 556252112Sdteske 557252112Sdteske local http_host http_port 558252112Sdteske f_getvar $VAR_HTTP_HOST http_host 559252112Sdteske f_getvar $VAR_HTTP_PORT http_port 560252112Sdteske 561252112Sdteske if ! { 562252112Sdteske f_validate_ipaddr "$http_host" || 563252112Sdteske f_validate_ipaddr6 "$http_host" || 564252112Sdteske { 565252112Sdteske f_dprintf "%s: Looking up hostname, %s, using host(1)" \ 566252112Sdteske "f_media_get_http" "$http_host" 567252112Sdteske f_host_lookup "$http_host" hosts 568252112Sdteske } 569252112Sdteske }; then 570252112Sdteske # All the above validations failed 571252112Sdteske [ "$hosts" ] && f_dialog_msgbox "$hosts" 572252112Sdteske return $FAILURE 573252112Sdteske elif [ ! "$hosts" ]; then 574252112Sdteske # One of the first two validations passed 575252112Sdteske hosts="$http_host" 576252112Sdteske fi 577252112Sdteske 578252112Sdteske local host connected= 579252112Sdteske for host in $hosts; do 580252112Sdteske f_quietly nc -nz "$host" "$http_port" || continue 581252112Sdteske connected=1; break 582252112Sdteske done 583252112Sdteske if [ ! "$connected" ]; then 584252112Sdteske f_show_msg "$msg_couldnt_connect_to_server http://%s:%s/" \ 585252112Sdteske "$http_host" "$http_port" 586252112Sdteske return $FAILURE 587252112Sdteske fi 588252112Sdteske 589252112Sdteske local http_path 590252112Sdteske f_getvar $VAR_HTTP_PATH%/ http_path 591255818Sdteske case "$http_path" in 592255818Sdteske http://*|/*) : valid request ;; 593255818Sdteske *) http_path="/$http_path" # full URI requests only 594255818Sdteske esac 595252112Sdteske 596255818Sdteske local url="$http_path/$file" rx 597252112Sdteske f_dprintf "sending http request for: %s" "$url" 598252112Sdteske printf "GET %s HTTP/1.0\r\n\r\n" "$url" | nc -n "$host" "$http_port" | 599252112Sdteske ( 600252112Sdteske # 601252112Sdteske # scan the headers of the response 602252112Sdteske # this is extremely quick'n dirty 603252112Sdteske # 604252112Sdteske 605253333Sdteske rv=0 length=-1 606252112Sdteske while read LINE; do 607252112Sdteske case "$LINE" in 608252112Sdteske HTTP*) 609252112Sdteske f_dprintf "received response: %s" "$LINE" 610252112Sdteske set -- $LINE; rv=$2 611252112Sdteske f_isinteger "$rv" || rv=0 612252112Sdteske ;; 613253333Sdteske "Content-Length: "*) 614253333Sdteske length="${LINE% 615253333Sdteske}" 616253333Sdteske length="${length#Content-Length: }" 617253333Sdteske f_dprintf "received content-length: %s" \ 618253333Sdteske "$length" 619253333Sdteske ;; 620252112Sdteske *) 621252112Sdteske [ "${LINE% 622252112Sdteske}" ] || break # End of headers 623252112Sdteske esac 624252112Sdteske done 625252112Sdteske 626252112Sdteske [ $rv -ge 500 ] && exit 5 627252112Sdteske [ $rv -eq 404 ] && exit 44 628252112Sdteske [ $rv -ge 400 ] && exit 4 629252112Sdteske [ $rv -ge 300 ] && exit 3 630252112Sdteske [ $rv -eq 200 ] || exit $FAILURE 631252112Sdteske 632253333Sdteske if [ ! "$probe_type" ]; then 633252112Sdteske cat # output the rest ``as-is'' 634253333Sdteske elif [ "$probe_type" = "$PROBE_SIZE" ]; then 635253333Sdteske f_isinteger "$length" || length=-1 636253333Sdteske echo "$length" 637252112Sdteske fi 638252112Sdteske exit 200 639252112Sdteske ) 640252112Sdteske local retval=$? 641252112Sdteske [ $retval -eq 200 ] && return $SUCCESS 642253333Sdteske [ "$probe_type" ] && return $FAILURE 643252112Sdteske 644252112Sdteske case "$retval" in 645252112Sdteske 5) f_show_msg "$msg_server_error_when_requesting_url" "$url" ;; 646252112Sdteske 44) f_show_msg "$msg_url_was_not_found" "$url" ;; 647252112Sdteske 4) f_show_msg "$msg_client_error" ;; 648252112Sdteske *) f_show_msg "$msg_error_when_requesting_url" "$url" ;; 649252112Sdteske esac 650252112Sdteske return $FAILURE 651252112Sdteske} 652252112Sdteske 653252112Sdteske############################################################ MAIN 654252112Sdteske 655252112Sdteskef_dprintf "%s: Successfully loaded." media/http.subr 656252112Sdteske 657252112Sdteskefi # ! $_MEDIA_HTTP_SUBR 658